Merge pull request #937 from stilor/build-autotoolize

Autotoolize crosstool-ng

60 files changed, 5531 insertions, 1275 deletions

diff --git a/.gitignore b/.gitignore
index 225009c..0f5d8a9 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,18 +1,21 @@
 # Generated files
 configure
 autom4te.cache
+aclocal.m4
+config.h*
 config.log
 config.status
-/Makefile
-*ct-ng*
+Makefile
+Makefile.in
+ct-ng
 !ct-ng.comp
 !ct-ng.in
-paths.*
-!paths.in
+paths.sh
 config/configure.in
 config/gen/
 config/versions/
 .config
+verbatim-data.mk
 maintainer/package-versions
 
 # Temporaries
@@ -20,12 +23,11 @@ maintainer/package-versions
 build.log
 .config.old
 temp.*
+stamp-h1
 
 # This is the place where toolchains are built
 .build/
-# .. and the legacy location
-targets/
 # .. and log for 'build-all'
-.build-all
+.build-all/
 # .. and release creation
-release
+release/
diff --git a/.travis.yml b/.travis.yml
index 1be7a57..aa56c43 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -23,7 +23,6 @@ addons:
         packages:
             - bison
             - flex
-            - gperf
             - libncurses5-dev
             - texinfo
             - help2man
diff --git a/Makefile.am b/Makefile.am
new file mode 100644
index 0000000..5ee3682
--- /dev/null
+++ b/Makefile.am
@@ -0,0 +1,77 @@
+## Process this file with automake to produce Makefile.in
+## vim: set noet :
+
+include verbatim-data.mk
+
+SUBDIRS		= kconfig
+
+bin_SCRIPTS		= ct-ng
+CLEANFILES		= ct-ng bash-completion/ct-ng docs/ct-ng.1
+EXTRA_DIST		= bootstrap ct-ng.in bash-completion/ct-ng.in docs/ct-ng.1.in maintainer
+
+if INSTALL_BASH_COMPLETION
+compdir				= @BASH_COMPLETION_DIR@
+comp_SCRIPTS		= bash-completion/ct-ng
+endif
+
+man1_MANS	= docs/ct-ng.1
+
+# paths.sh generated by configure
+nobase_dist_pkgdata_DATA = $(verbatim_data) paths.sh
+
+# ct-ng, as renamed by the installation
+ctng_progname		= `echo ct-ng | sed '$(transform)'`
+
+USER_MANUAL_FILES = \
+	docs/manual/1_Introduction.md \
+	docs/manual/2_Installation.md \
+	docs/manual/3_Configuration.md \
+	docs/manual/4_Building.md \
+	docs/manual/5_Toolchain_Usage.md \
+	docs/manual/6_Toolchain_Types.md \
+	docs/manual/7_Contributing.md \
+	docs/manual/8_Internals.md \
+	docs/manual/9_Toolchain_Construction.md \
+	docs/manual/A_Credits.md \
+	docs/manual/B_Known_issues.md \
+	docs/manual/C_Setup_OS.md \
+	docs/manual/D_Tutorials_features.md
+
+if INSTALL_USER_MANUAL
+doc_DATA		= $(USER_MANUAL_FILES)
+else
+doc_DATA		= docs/MANUAL_ONLINE
+endif
+
+do_subst		= ( @SED@ \
+			-e 's,[@]docdir[@],$(docdir),g' \
+			-e 's,[@]pkgdatadir[@],$(pkgdatadir),g' \
+			-e 's,[@]pkglibexecdir[@],$(pkglibexecdir),g' \
+			-e 's,[@]progname[@],'$(ctng_progname)',g' \
+		| $(SHELL) config.status --file=- )
+
+ct-ng: ct-ng.in Makefile
+	$(AM_V_GEN)$(do_subst) < $< >$@-t && chmod a-w,a+x $@-t && mv -f $@-t $@
+
+docs/ct-ng.1: docs/ct-ng.1.in Makefile
+	$(AM_V_GEN)$(MKDIR_P) docs && $(do_subst) < $< >$@-t && mv -f $@-t $@
+
+bash-completion/ct-ng: bash-completion/ct-ng.in Makefile
+	$(AM_V_GEN)$(MKDIR_P) bash-completion && $(do_subst) < $< >$@-t && mv -f $@-t $@
+
+# automake doesn't offer an option to compress manpages, do it after installation
+# Also, lintian is picky about execute-bit on the scripts
+install-data-hook:
+	rm -f $(DESTDIR)$(man1dir)/$(ctng_progname).1.gz
+	gzip -9 $(DESTDIR)$(man1dir)/$(ctng_progname).1
+	chmod +x $(DESTDIR)$(pkgdatadir)/scripts/config.guess
+	chmod +x $(DESTDIR)$(pkgdatadir)/scripts/config.sub
+if INSTALL_BASH_COMPLETION
+	chmod -x $(DESTDIR)$(compdir)/$(ctng_progname)
+endif
+
+uninstall-hook:
+	rm -f $(DESTDIR)$(man1dir)/$(ctng_progname).1.gz
+
+dist-hook: maintainer/download-docs.sh
+	$< $(top_distdir) $(USER_MANUAL_FILES)
diff --git a/Makefile.in b/Makefile.in
deleted file mode 100644
index 2ac93ac..0000000
--- a/Makefile.in
+++ /dev/null
@@ -1,364 +0,0 @@
-# Makefile.in for building crosstool-NG
-# This file serves as source for the ./configure operation
-
-# This series of test is here because GNU make 3.81 will *not* use MAKEFLAGS
-# to set additional flags in the current Makfile ( see:
-# http://savannah.gnu.org/bugs/?20501 ), although the make manual says it
-# should ( see: http://www.gnu.org/software/make/manual/make.html#Options_002fRecursion )
-# so we have to work it around by calling ourselves back if needed
-
-# So why do we need not to use the built rules and variables? Because we
-# need to generate scripts/crosstool-NG.sh from scripts/crosstool-NG.sh.in
-# and there is a built-in implicit rule '%.sh:' that has neither a pre-requisite
-# nor a command associated, and that built-in implicit rule takes precedence
-# over our non-built-in implicit rule '%: %.in', below.
-
-# CT_MAKEFLAGS will be used later, below...
-
-# Do not print directories as we descend into them
-ifeq ($(filter --no-print-directory,$(MAKEFLAGS)),)
-CT_MAKEFLAGS += --no-print-directory
-endif
-
-# Use neither builtin rules, nor builtin variables
-# Note: dual test, because if -R and -r are given on the command line
-# (who knows?), MAKEFLAGS contains 'Rr' instead of '-Rr', while adding
-# '-Rr' to MAKEFLAGS adds it literaly ( and does not add 'Rr' )
-# Further: quad test because the flags 'rR' and '-rR' can be reordered.
-ifeq ($(filter Rr,$(MAKEFLAGS)),)
-ifeq ($(filter -Rr,$(MAKEFLAGS)),)
-ifeq ($(filter rR,$(MAKEFLAGS)),)
-ifeq ($(filter -rR,$(MAKEFLAGS)),)
-CT_MAKEFLAGS += -Rr
-endif # No -rR
-endif # No rR
-endif # No -Rr
-endif # No Rr
-
-# Helper: print abbreviation of the command by default, or full command
-# if doing 'make V=1'.
-__silent = $(if $(V),,@printf '  %-7s %s\n' '$1' '$(if $2,$2,$(strip $<))' && )
-__silent_rm = $(call __silent,RM,$1)rm -f $1
-__silent_rmdir = $(call __silent,RMDIR,$1)rm -rf $1
-
-# Remove any suffix rules
-.SUFFIXES:
-
-all: configure Makefile build
-
-###############################################################################
-# Configuration variables
-
-# Stuff found by ./configure
-export DATE            := @DATE@
-export LOCAL           := @enable_local@
-export PROG_SED        := @program_transform_name@
-export PACKAGE_TARNAME := @PACKAGE_TARNAME@
-export VERSION         := @PACKAGE_VERSION@
-export prefix          := @prefix@
-export exec_prefix     := @exec_prefix@
-export bindir          := @bindir@
-export libdir          := @libdir@@sublibdir@
-export docdir          := @docdir@@subdocdir@
-export mandir          := @mandir@
-export datarootdir     := @datarootdir@
-export install         := @INSTALL@
-export bash            := @BASH_SHELL@
-export awk             := @AWK@
-export grep            := @GREP@
-export make            := @MAKE@
-export sed             := @SED@
-export wget            := @wget@
-export curl            := @curl@
-export libtool         := @LIBTOOL@
-export libtoolize      := @LIBTOOLIZE@
-export objcopy         := @OBJCOPY@
-export objdump         := @OBJDUMP@
-export readelf         := @READELF@
-export patch           := @PATCH@
-export gperf           := @GPERF@
-export gperf_len_type  := @GPERF_LEN_TYPE@
-export CC              := @CC@
-export CPP             := @CPP@
-export CPPFLAGS        := @CPPFLAGS@
-export CFLAGS          := @CFLAGS@
-export LDFLAGS         := @LDFLAGS@
-export LIBS            := @LIBS@
-export INTL_LIBS       := @INTL_LIBS@
-export curses_hdr      := @ac_ct_curses_hdr@
-export gettext         := @gettext@
-export CPU_COUNT       := @CPU_COUNT@
-
-###############################################################################
-# Non-configure variables
-MAN_SECTION := 1
-MAN_SUBDIR := /man$(MAN_SECTION)
-
-PROG_NAME := $(shell echo 'ct-ng' |$(sed) -r -e '$(PROG_SED)' )
-
-###############################################################################
-# Sanity checks
-
-# Check if Makefile is up to date:
-Makefile: Makefile.in
-	@echo "$< changed: you must re-run './configure'"
-	@false
-
-configure: configure.ac
-	@echo "$< changed: you must re-run './bootstrap'"
-	@false
-
-# If installing with DESTDIR, check it's an absolute path
-ifneq ($(strip $(DESTDIR)),)
-  ifneq ($(DESTDIR),$(abspath /$(DESTDIR)))
-    $(error DESTDIR is not an absolute PATH: '$(DESTDIR)')
-  endif
-endif
-
-###############################################################################
-# Global make rules
-
-# If any extra MAKEFLAGS were added, re-run ourselves
-# See top of file for an explanation of why this is needed...
-ifneq ($(strip $(CT_MAKEFLAGS)),)
-
-# Somehow, the new auto-completion for make in the recent distributions
-# trigger a behavior where our Makefile calls itself recursively, in a
-# never-ending loop (except on lack of ressources, swap, PIDs...)
-# Avoid this situation by cutting the recursion short at the first
-# level.
-# This has the side effect of only showing the real targets, and hiding our
-# internal ones. :-)
-ifneq ($(MAKELEVEL),0)
-$(error Recursion detected, bailing out...)
-endif
-
-MAKEFLAGS += $(CT_MAKEFLAGS)
-build install clean distclean mrproper uninstall:
-	@$(MAKE) $@
-
-else
-# There were no additional MAKEFLAGS to add, do the job
-
-TARGETS := bin lib lib-kconfig doc man
-
-build: $(patsubst %,build-%,$(TARGETS))
-
-install: build real-install
-
-clean: $(patsubst %,clean-%,$(TARGETS))
-
-distclean: clean
-	$(call __silent_rm,Makefile kconfig/Makefile config/configure.in)
-
-mrproper: distclean
-	$(call __silent_rmdir,autom4te.cache config/gen config/versions)
-	$(call __silent_rm,config.log config.status configure)
-
-uninstall: real-uninstall
-
-###############################################################################
-# Specific make rules
-
-#--------------------------------------
-# Build rules
-
-build-bin: $(PROG_NAME)             \
-           scripts/scripts.mk       \
-           scripts/crosstool-NG.sh  \
-           scripts/saveSample.sh
-
-build-lib: paths.mk             \
-           paths.sh
-
-build-lib-kconfig:
-	$(call __silent,ENTER,kconfig)$(MAKE) -C kconfig
-	$(call __silent,LEAVE,kconfig):
-
-build-doc:
-
-build-man: docs/$(PROG_NAME).1.gz
-
-docs/$(PROG_NAME).1.gz: docs/$(PROG_NAME).1
-	$(call __silent,GZIP)gzip -c9n $< >$@
-
-define sed_it
-	$(call __silent,SED,$@)$(sed) -r                    \
-	           -e 's,@@CT_BINDIR@@,$(bindir),g;'        \
-	           -e 's,@@CT_LIBDIR@@,$(libdir),g;'        \
-	           -e 's,@@CT_DOCDIR@@,$(docdir),g;'        \
-	           -e 's,@@CT_MANDIR@@,$(mandir),g;'        \
-	           -e 's,@@CT_PROG_NAME@@,$(PROG_NAME),g;'  \
-	           -e 's,@@CT_VERSION@@,$(VERSION),g;'	    \
-	           -e 's,@@CT_DATE@@,$(DATE),g;'            \
-	           -e 's,@@CT_make@@,$(make),g;'            \
-	           -e 's,@@CT_bash@@,$(bash),g;'            \
-	           -e 's,@@CT_awk@@,$(awk),g;'              \
-	           -e 's,@@CT_wget@@,$(wget),g;'            \
-	           -e 's,@@CT_curl@@,$(curl),g;'            \
-	           -e 's,@@CT_cpucount@@,$(CPU_COUNT),g;'   \
-	           $< >$@
-endef
-
-docs/$(PROG_NAME).1: docs/ct-ng.1.in Makefile
-	$(call sed_it)
-
-$(PROG_NAME): ct-ng.in Makefile
-	$(call sed_it)
-	$(call __silent,CHMOD,$@)chmod 755 $@
-
-%: %.in Makefile
-	$(call sed_it)
-
-__paths_vars	= install bash awk grep make sed libtool \
-		  libtoolize objcopy objdump readelf patch gperf
-
-# We create a script fragment that is parseable from inside a Makefile,
-# and one from inside a shell script.
-paths.mk: FORCE
-	$(call __silent,GEN,$@){ $(foreach w,$(__paths_vars),$(if $($w),echo 'export $w=$(subst ','\'',$($w))';)) :; } >$@
-
-paths.sh: FORCE
-	$(call __silent,GEN,$@){ $(foreach w,$(__paths_vars),$(if $($w),echo 'export $w="$(subst ','\'',$($w))"';)) :; } >$@
-
-FORCE:
-
-#--------------------------------------
-# Clean rules
-
-clean-bin:
-	$(call __silent_rm,$(PROG_NAME))
-	$(call __silent_rm,scripts/scripts.mk)
-	$(call __silent_rm,scripts/crosstool-NG.sh)
-	$(call __silent_rm,scripts/saveSample.sh)
-
-clean-lib:
-	$(call __silent_rm,paths.mk paths.sh)
-
-clean-lib-kconfig:
-	$(call __silent,ENTER,kconfig)$(MAKE) -C kconfig clean
-	$(call __silent,LEAVE,kconfig):
-
-clean-doc:
-
-clean-man:
-	$(call __silent_rm,docs/$(PROG_NAME).1)
-	$(call __silent_rm,docs/$(PROG_NAME).1.gz)
-
-#--------------------------------------
-# Check for --local setup
-
-ifeq ($(strip $(LOCAL)),yes)
-
-real-install:
-	@true
-
-real-uninstall:
-	@true
-
-else
-
-#--------------------------------------
-# Install rules
-
-real-install: $(patsubst %,install-%,$(TARGETS)) install-post
-
-install-bin: $(DESTDIR)$(bindir)
-	$(call __silent,INST,$(PROG_NAME))$(install) -m 755 $(PROG_NAME) "$(DESTDIR)$(bindir)/$(PROG_NAME)"
-
-# If one is hacking crosstool-NG, the patch set might change between any two
-# installations of the same VERSION, thus the patches must be removed prior
-# to being installed. It is the responsibility of the user to call uninstall
-# first, if (s)he deems it necessary
-install-lib: $(DESTDIR)$(libdir)    \
-             install-lib-main       \
-             install-lib-samples
-
-LIB_SUB_DIR := config contrib packages scripts
-$(patsubst %,install-lib-%-copy,$(LIB_SUB_DIR)): install-lib-%-copy: $(DESTDIR)$(libdir)
-	$(call __silent,INSTDIR,$*)tar cf - --exclude='*.sh.in' --exclude='*.in.in' --exclude=.gitignore $* \
-	 |(cd "$(DESTDIR)$(libdir)"; tar xf -)
-
-# Dependency-only by default.
-$(patsubst %,install-lib-%,$(LIB_SUB_DIR)): install-lib-%: install-lib-%-copy
-
-install-lib-main: $(DESTDIR)$(libdir) $(patsubst %,install-lib-%,$(LIB_SUB_DIR))
-	$(call __silent,INST,steps.mk)$(install) -m 644 steps.mk "$(DESTDIR)$(libdir)"
-	$(call __silent,INST,paths.mk)$(install) -m 644 paths.mk "$(DESTDIR)$(libdir)"
-	$(call __silent,INST,paths.sh)$(install) -m 644 paths.sh "$(DESTDIR)$(libdir)"
-
-# Samples need a little love:
-#  - change every occurrence of CT_TOP_DIR to CT_LIB_DIR
-install-lib-samples: $(DESTDIR)$(libdir) install-lib-main
-	$(call __silent,INSTDIR,samples)for samp_dir in samples/*/; do          \
-	     mkdir -p "$(DESTDIR)$(libdir)/$${samp_dir}";                       \
-	     $(sed) -r -e 's:\$$\{CT_TOP_DIR\}:\$$\{CT_LIB_DIR\}:;'             \
-	               -e 's:^(CT_WORK_DIR)=.*:\1="\$${CT_TOP_DIR}/.build":;'   \
-	            $${samp_dir}/crosstool.config                               \
-	            >"$(DESTDIR)$(libdir)/$${samp_dir}/crosstool.config";       \
-	     $(install) -m 644 "$${samp_dir}/reported.by"                       \
-	                       "$(DESTDIR)$(libdir)/$${samp_dir}";              \
-	     for libc_cfg in "$${samp_dir}/"*libc*.config; do                   \
-	         [ -f "$${libc_cfg}" ] || continue;                             \
-	         $(install) -m 644 "$${libc_cfg}"                               \
-	                           "$(DESTDIR)$(libdir)/$${samp_dir}";          \
-	     done;                                                              \
-	     [ -e "$${samp_dir}/broken" ] &&                                    \
-                 $(install) -m 644 "$${samp_dir}/broken"                        \
-                    "$(DESTDIR)$(libdir)/$${samp_dir}/" || :;                   \
-	 done
-	@$(install) -m 644 samples/samples.mk "$(DESTDIR)$(libdir)/samples/samples.mk"
-
-install-lib-kconfig: $(DESTDIR)$(libdir) install-lib-main
-	$(call __silent,MKDIR,$@)$(install) -m 755 -d "$(DESTDIR)$(libdir)/kconfig"
-	$(call __silent,ENTER,kconfig)$(MAKE) -C kconfig install \
-		DESTDIR=$(DESTDIR)$(libdir)/kconfig
-	$(call __silent,LEAVE,kconfig):
-
-install-doc: install-doc-$(if $(wildcard docs/MANUAL_ONLINE),message,real)
-
-install-doc-message:
-	@echo "********************************************************************"
-	@echo "  You are building from a development version that does not include"
-	@echo "  the documentation. Refer to the manual online at:"
-	@echo "      http://crosstool-ng.github.io/docs"
-	@echo "********************************************************************"
-
-install-doc-real: $(DESTDIR)$(docdir)
-	$(call __silent,INST,docs)for doc_file in docs/manual/*.md; do     \
-	     $(install) -m 644 "$${doc_file}" "$(DESTDIR)$(docdir)"; \
-	done
-
-install-man: $(DESTDIR)$(mandir)$(MAN_SUBDIR)
-	$(call __silent,INST,$(PROG_NAME).1.gz)$(install) -m 644 docs/$(PROG_NAME).1.gz "$(DESTDIR)$(mandir)$(MAN_SUBDIR)"
-
-$(sort $(DESTDIR)$(bindir) $(DESTDIR)$(libdir) $(DESTDIR)$(docdir) $(DESTDIR)$(mandir)$(MAN_SUBDIR)):
-	$(call __silent,MKDIR,$@)$(install) -m 755 -d "$@"
-
-install-post:
-	@echo
-	@echo "For auto-completion, do not forget to install '$(PROG_NAME).comp' into"
-	@echo "your bash completion directory (usually /etc/bash_completion.d)"
-
-#--------------------------------------
-# Uninstall rules
-
-real-uninstall: $(patsubst %,uninstall-%,$(filter-out lib-kconfig,$(TARGETS)))
-
-uninstall-bin:
-	$(call __silent_rm,$(DESTDIR)$(bindir)/$(PROG_NAME))
-
-uninstall-lib:
-	$(call __silent_rmdir,$(DESTDIR)$(libdir))
-
-uninstall-doc:
-	$(call __silent_rmdir,$(DESTDIR)$(docdir))
-
-uninstall-man:
-	$(call __silent_rm,$(DESTDIR)$(mandir)$(MAN_SUBDIR)/$(PROG_NAME).1.gz)
-
-endif # Not --local
-
-endif # No extra MAKEFLAGS were added
-
-.PHONY: build $(patsubst %,build-%,$(TARGETS)) install
diff --git a/ct-ng.comp b/bash-completion/ct-ng.in
index e89e686..f38c881 100644
--- a/ct-ng.comp
+++ b/bash-completion/ct-ng.in
@@ -17,7 +17,7 @@ _ct_ng () {
 
     actions='help menuconfig nconfig oldconfig saveconfig extractconfig
              defconfig savedefconfig
-             build build. build-all build-all.
+             build build-all
              wiki-samples list-samples list-samples-short check-samples
              list-steps
              show-tuple show-all show-config
@@ -33,4 +33,4 @@ _ct_ng () {
     COMPREPLY=($(compgen -W "${ct_ng_opts}" -- "${cur}"))
     return 0
 }
-complete -F _ct_ng ct-ng
+complete -F _ct_ng @progname@
diff --git a/bootstrap b/bootstrap
index a71a2b0..e4a207b 100755
--- a/bootstrap
+++ b/bootstrap
@@ -738,7 +738,39 @@ gen_selection menu debug "Debug facilities"
 gen_selection menu comp_tools "Companion tools"
 gen_selection menu comp_libs "Companion libraries"
 
-msg "*** Running autoconf"
-autoconf -Wall --force
+msg "*** Gathering the list of data files to install"
+{
+    declare -A seen_files
+    echo -n "verbatim_data ="
+    find config contrib packages samples scripts -type f | LANG=C sort | while read f; do
+        # Implement some kind of .installignore for these files?
+        case "${f}" in
+            # Skip certain files not needed at runtime (used above for generating kconfig
+            # fragments).
+            packages/*.help | packages/*.desc)
+                continue
+                ;;
+            # And, some file automake insists we must have
+            scripts/compile | scripts/missing | scripts/depcomp | scripts/ltmain.sh | scripts/install-sh)
+                continue
+                ;;
+            # Special hack for configure.in.in - replace with the file that configure
+            # will produce. FIXME: create this file at the time of 'ct-ng build'.
+            config/configure.in.in)
+                f=config/configure.in
+                ;;
+        esac
+        # Checks & substitutions above may result in duplicate files
+        if [ -n "${seen_files[${f}]}" ]; then
+            continue
+        fi
+        echo " \\"
+        echo -n "	${f}"
+        seen_files[${f}]=y
+    done
+} > verbatim-data.mk
+
+msg "*** Running autoreconf"
+autoreconf -Wall --force
 
 msg "*** Done!"
diff --git a/config/comp_tools/autoconf.in b/config/comp_tools/autoconf.in
index b84d587..1232782 100644
--- a/config/comp_tools/autoconf.in
+++ b/config/comp_tools/autoconf.in
@@ -1,5 +1,5 @@
 # Autoconf
 
-## default y if !CONFIGURE_has_autoconf_2_63_or_newer
-## default y if !CONFIGURE_has_autoreconf_2_63_or_newer
+## default y if !CONFIGURE_has_autoconf_2_65_or_newer
+## default y if !CONFIGURE_has_autoreconf_2_65_or_newer
 ## help Autoconf
diff --git a/config/configure.in.in b/config/configure.in.in
index 3560336..c8003a0 100644
--- a/config/configure.in.in
+++ b/config/configure.in.in
@@ -24,11 +24,11 @@ config CONFIGURE_has_libtool_2_4_or_newer
 config CONFIGURE_has_libtoolize_2_4_or_newer
     @KCONFIG_libtoolize_2_4_or_newer@
 
-config CONFIGURE_has_autoconf_2_63_or_newer
-    @KCONFIG_autoconf_2_63_or_newer@
+config CONFIGURE_has_autoconf_2_65_or_newer
+    @KCONFIG_autoconf_2_65_or_newer@
 
-config CONFIGURE_has_autoreconf_2_63_or_newer
-    @KCONFIG_autoreconf_2_63_or_newer@
+config CONFIGURE_has_autoreconf_2_65_or_newer
+    @KCONFIG_autoreconf_2_65_or_newer@
 
 config CONFIGURE_has_automake_1_15_or_newer
     @KCONFIG_automake_1_15_or_newer@
diff --git a/config/global/build-behave.in b/config/global/build-behave.in
index d3298ea..4a50428 100644
--- a/config/global/build-behave.in
+++ b/config/global/build-behave.in
@@ -13,7 +13,8 @@ config PARALLEL_JOBS
       
       Enter 1 to have only one job at a time.
 
-      Enter 0 to set automatically based on how many processors the host has.
+      Enter 0 to set automatically based on how many processors the build
+      machine has.
 
 config LOAD
     string
diff --git a/configure.ac b/configure.ac
index 8ae98bf..5cb82a8 100644
--- a/configure.ac
+++ b/configure.ac
@@ -2,162 +2,52 @@
 # Process this file with autoconf to produce a configure script.
 
 AC_PREREQ([2.67])
+
+# FIXME Temporary hack until the next release (we'll switch to plain numeric tags then)
+# FIXME need to quote sed expression
 AC_INIT(
     [crosstool-NG],
-    [m4_esyscmd_s([git describe --always --dirty])],
-    [crossgcc@sourceware.org])
+    [m4_esyscmd_s([git describe --always --dirty | sed s,^crosstool-ng-,,])],
+    [crossgcc@sourceware.org],
+    [crosstool-ng],
+    [http://crosstool-ng.org])
 AC_CONFIG_AUX_DIR([scripts])
+AC_CONFIG_MACRO_DIR([m4])
 
-#--------------------------------------------------------------------
-# A few helper macros
-
-# ACX_WITH_DEPRECATED(PROG, VAR)
-# Declare a deprecated --with option: instead of --with-PROG=xxx, must use VAR=xxx
-AC_DEFUN(
-    [ACX_WITH_DEPRECATED],
-    [AC_ARG_WITH([$1],
-                 [AS_HELP_STRING([--with-$1=PATH],
-                                 [Deprecated; use $2=PATH instead])],
-                 [AC_MSG_ERROR([--with-$1=$withval deprecated; use $2=$withval instead])])
-    ])
-
-# Check for required tool
-AC_DEFUN(
-    [ACX_CHECK_TOOL_REQ],
-    [AC_CHECK_TOOLS([$1], [$2])
-     AS_IF(
-        [test -z "$$1"],
-        [AC_MSG_ERROR([missing required tool: $2])])
-    ])
-
-# Check for required tool, set variable to full pathname
-AC_DEFUN(
-    [ACX_PATH_TOOL_REQ],
-    [ACX_WITH_DEPRECATED([$3], [$1])
-     AC_ARG_VAR([$1], [Specify the full path to GNU $3])
-     ACX_CHECK_TOOL_REQ([$1], [$2])
-     AS_CASE(
-        [$$1],
-        [/*],,
-        [?*],[AC_MSG_CHECKING([for absolute path to $$1])
-              $1=$(which $$1)
-              AC_MSG_RESULT([$$1])])])
-
-# Check for required program
-AC_DEFUN(
-    [ACX_CHECK_PROGS_REQ],
-    [AC_CHECK_PROGS([$1], [$2])
-     AS_IF(
-        [test -z "$$1"],
-        [AC_MSG_ERROR([missing required tool: $2])])
-    ])
-
-# Check for path to required program
-AC_DEFUN(
-    [ACX_PATH_PROGS_REQ],
-    [AC_PATH_PROGS([$1], [$2])
-     AS_IF(
-        [test -z "$$1"],
-        [AC_MSG_ERROR([missing required tool: $2])])
-    ])
-
-# Set the kconfig option
-AC_DEFUN(
-    [ACX_SET_KCONFIG_OPTION],
-    [AS_IF(
-     [test -n "$$1"],
-     [AC_SUBST([KCONFIG_$1], ["def_bool y"])],
-     [AC_SUBST([KCONFIG_$1], ["bool"])])])
-
-# Check if a given program is available with a particular version.
-#   ACX_PROG_VERSION(VAR, HELP, PROG, SRCH, VERSION_CHECK[, CONFIG_OPT])
-# Search for PROG under possible names of SRCH. Allow user overrides in variable
-# VAR; display HELP message. Try to find a version that satisfies VERSION_CHECK
-# regexp; if that is achieved, set CONFIG_OPT in the kconfig. Otherwise, settle
-# for any version found.
-# Sets acx_version_VAR_ok to ':' if the version met the criterion, or false otherwise.
-AC_DEFUN(
-    [ACX_PROG_VERSION],
-    [AS_IF([test -z "$EGREP"],
-         [AC_MSG_ERROR([This macro can only be used after checking for EGREP])])
-     ACX_WITH_DEPRECATED([$3], [$1])
-     AC_ARG_VAR([$1], [Specify the full path to $2])
-     acx_version_$1_ok=false
-     AC_CACHE_CHECK([for $3], [ac_cv_path_$1],
-         [AC_PATH_PROGS_FEATURE_CHECK([$1], [$4],
-              [[ver=`$ac_path_$1 --version 2>/dev/null| $EGREP $5`
-                test -z "$ac_cv_path_$1" && ac_cv_path_$1=$ac_path_$1
-                test -n "$ver" && ac_cv_path_$1="$ac_path_$1" ac_path_$1_found=: acx_version_$1_ok=:]])])
-     AS_IF([test -n "$1"],
-         [[ver=`$ac_path_$1 --version 2>/dev/null| $EGREP $5`
-           test -n "$ver" && acx_version_$1_ok=:]])
-     AC_MSG_CHECKING([for $2])
-     AS_IF([$acx_version_$1_ok],
-         [AC_MSG_RESULT([yes])],
-         [AC_MSG_RESULT([no])])
-     AC_SUBST([$1], [$ac_cv_path_$1])
-     AS_IF([test -n "$6"],
-         [AS_IF([$acx_version_$1_ok], [$6=y], [$6=])
-          ACX_SET_KCONFIG_OPTION([$6])])
-    ])
-
-# Same as above, but make it a fatal error if the tool is not found at all
-# (i.e. "require any version, prefer version X or newer")
-AC_DEFUN(
-    [ACX_PROG_VERSION_REQ_ANY],
-    [ACX_PROG_VERSION([$1], [$2], [$3], [$4], [$5], [$6])
-     AS_IF([test -z "$$1"],
-         [AC_MSG_ERROR([Required tool not found: $3])])
-    ])
-
-# Same, but also require the version check to pass
-# (i.e. "require version X or newer")
-AC_DEFUN(
-    [ACX_PROG_VERSION_REQ_STRICT],
-    [ACX_PROG_VERSION([$1], [$2], [$3], [$4], [$5], [$6])
-     AS_IF([test -z "$$1" || ! $acx_version_$1_ok],
-         [AC_MSG_ERROR([Required tool not found: $2])])
-    ])
-
-# Check if install(1) supports --strip-program=...
-AC_DEFUN(
-    [ACX_INSTALL_STRIP_PROGRAM],
-    [touch conftest
-     mkdir conftest.dir
-     AC_MSG_CHECKING([if install takes --strip-program option])
-     AS_IF([$INSTALL --strip-program=true -s conftest conftest.dir/conftest 2>/dev/null],
-        [install_with_strip_program=y
-         AC_MSG_RESULT([yes])],
-        [AC_MSG_RESULT([no])])
-     ACX_SET_KCONFIG_OPTION([install_with_strip_program])
-     rm -rf conftest.dir
-     rm -f conftest
-    ])
-     
+# FIXME try to use gnu strictness? Just add the missing files?
+# Set automake defaults:
+# - Tarballs are compressed with xz and bzip2
+# - Object files are generated in a subdirectory (new default in automake)
+# - Request new tar format (old, tar-v7, breaks on long paths we have)
+AM_INIT_AUTOMAKE([-Wall -Werror foreign no-dist-gzip dist-xz dist-bzip2 subdir-objects tar-pax])
+
+# Safety check per autoconf best practices
+AC_CONFIG_SRCDIR([ct-ng.in])
 
 #--------------------------------------------------------------------
 # Allow dummy --{en,dis}able-{static,shared}
-AC_ARG_ENABLE(
-    [local],
-    [AS_HELP_STRING(
-        [--enable-local],
-        [do not install, and use current directory])])
+AC_ARG_ENABLE([local],
+    [AS_HELP_STRING([--enable-local],
+        [run ct-ng from the current directory; 'make install' unsupported])])
 AC_SUBST([enable_local], [${enable_local:-no}])
 
-# FIXME: I don't know why we have this. Will remove after the next
-# release.
-AC_ARG_ENABLE(
-    [shared],
-    [AS_HELP_STRING(
-        [--enable-shared],
-        [build shared libraries (deprecated, ignored)])])
-AC_ARG_ENABLE(
-    [static],
-    [AS_HELP_STRING(
-        [--enable-static],
-        [build static libraries (deprecated, ignored)])])
-
-#---------------------------------------------------------------------
+AC_ARG_ENABLE([maintainer-mode],
+    [AS_HELP_STRING([--enable-maintainer-mode],
+        [Ignored; accepted to avoid a warning from debuild])])
+
+AC_ARG_WITH([bash-completion],
+    [AS_HELP_STRING([--with-bash-completion],
+        [install bash(1) command completion; can specify a path where it will be installed])],
+    [],
+    [with_bash_completion=yes])
+AS_IF([test "${with_bash_completion}" = "no"],
+    [BASH_COMPLETION_DIR=],
+    [test "${with_bash_completion}" != "yes"],
+    [BASH_COMPLETION_DIR="${with_bash_completion}"],
+    [BASH_COMPLETION_DIR='${datadir}/bash-completion/completions'])
+AM_CONDITIONAL([INSTALL_BASH_COMPLETION], [test -n "${BASH_COMPLETION_DIR}"])
+AC_SUBST([BASH_COMPLETION_DIR])
+
 # Check for --build and --host...
 AC_CANONICAL_BUILD
 AC_CANONICAL_HOST
@@ -168,46 +58,42 @@ AS_IF([test -n "$target_alias"],
 # Allow program name tranformation (--program-{prefix,suffix,transform-name})
 AC_ARG_PROGRAM
 
-#---------------------------------------------------------------------
-# Initial checks that are usually done first (I don't know why, that's
-# just what I seem to experience...)
-#---------------------------------------------------------------------
-ACX_WITH_DEPRECATED([install], [INSTALL])
-AC_ARG_VAR([INSTALL], [Specify the full path to a BSD-compatible install])
-AC_PROG_INSTALL
-ACX_INSTALL_STRIP_PROGRAM
+AC_PROG_MKDIR_P
+AC_PROG_LN_S
+
+CTNG_PROG_INSTALL
 
-ACX_WITH_DEPRECATED([grep], [GREP])
+CTNG_WITH_DEPRECATED([grep], [GREP])
 AC_ARG_VAR([GREP], [Specify the full path to GNU grep])
 
 # This is not a typo! Prefer GNU grep on macOS if it is installed.
-ACX_PATH_TOOL_REQ([GREP], [ggrep grep], [grep])
-ACX_PATH_TOOL_REQ([EGREP], [gegrep egrep], [egrep])
+CTNG_PATH_TOOL_REQ([GREP], [ggrep grep], [grep])
+CTNG_PATH_TOOL_REQ([EGREP], [gegrep egrep], [egrep])
 AC_PROG_GREP
 AC_PROG_EGREP
+
+# FIXME: ct-ng assumes this in many places...
 AS_IF([test "$EGREP" != "$GREP -E"],
     [AC_MSG_ERROR([egrep is not $GREP -E])])
 
-ACX_PROG_VERSION_REQ_STRICT([SED],
+CTNG_PROG_VERSION_REQ_STRICT([SED],
     [GNU sed >= 4.0],
     [sed],
     [gsed sed],
     ['GNU sed[^0-9]* [4-9]\.'])
 AC_ARG_VAR([SED], [Specify the full path to GNU sed])
 
-AC_PROG_LN_S
+AC_CONFIG_HEADERS([config.h])
 
-#--------------------------------------------------------------------
-# A bunch of boring tests...
-#--------------------------------------------------------------------
 # Modern GCC/GDB releases require C++ support in the compiler
 AC_PROG_CC
 AC_PROG_CXX
+AC_PROG_CPP
+AC_PROG_LEX
+AC_PROG_YACC
 AS_IF([test -z "$CC" -o -z "$CXX"],
       [AC_MSG_ERROR([no suitable compiler found])])
-AC_PROG_CPP
 
-#---------------------------------------------------------------------
 # Check to see if the compiler can link statically
 AC_MSG_CHECKING([if $CC can static link])
 echo "int main() {}" | ${CC} -static -o /dev/null -xc - > /dev/null 2>&1
@@ -218,82 +104,49 @@ AS_IF([test $static_test -eq 0],
       [test $static_test -ne 0],
           [static_link=
            AC_MSG_RESULT([no])])
-ACX_SET_KCONFIG_OPTION([static_link])
+CTNG_SET_KCONFIG_OPTION([static_link])
 
 AC_PROG_RANLIB
-ACX_PATH_TOOL_REQ([OBJCOPY], [gobjcopy objcopy], [objcopy])
-ACX_PATH_TOOL_REQ([OBJDUMP], [gobjdump objdump], [objdump])
-ACX_PATH_TOOL_REQ([READELF], [greadelf readelf], [readelf])
-ACX_PATH_TOOL_REQ([GPERF], [gperf], [gperf])
-
-ACX_CHECK_PROGS_REQ([bison], [bison])
-ACX_CHECK_PROGS_REQ([flex], [flex])
-ACX_CHECK_PROGS_REQ([makeinfo], [makeinfo])
-ACX_CHECK_PROGS_REQ([cut], [cut])
-ACX_CHECK_PROGS_REQ([readlink], [readlink])
-ACX_CHECK_PROGS_REQ([tar], [tar])
-ACX_CHECK_PROGS_REQ([gzip], [gzip])
-ACX_CHECK_PROGS_REQ([bzip2], [bzip2])
-ACX_CHECK_PROGS_REQ([xz], [xz])
-ACX_CHECK_PROGS_REQ([help2man], [help2man])
+CTNG_PATH_TOOL_REQ([OBJCOPY], [gobjcopy objcopy], [objcopy])
+CTNG_PATH_TOOL_REQ([OBJDUMP], [gobjdump objdump], [objdump])
+CTNG_PATH_TOOL_REQ([READELF], [greadelf readelf], [readelf])
+
+CTNG_CHECK_PROGS_REQ([bison], [bison])
+CTNG_CHECK_PROGS_REQ([flex], [flex])
+CTNG_CHECK_PROGS_REQ([makeinfo], [makeinfo])
+CTNG_CHECK_PROGS_REQ([cut], [cut])
+CTNG_CHECK_PROGS_REQ([readlink], [readlink])
+CTNG_CHECK_PROGS_REQ([tar], [tar])
+CTNG_CHECK_PROGS_REQ([gzip], [gzip])
+CTNG_CHECK_PROGS_REQ([bzip2], [bzip2])
+CTNG_CHECK_PROGS_REQ([xz], [xz])
+CTNG_CHECK_PROGS_REQ([help2man], [help2man])
 
 # Not a fatal failure even if we have neither - the tarballs may
 # be provided in a local directory.
 AC_CHECK_PROGS([wget], [wget])
-ACX_SET_KCONFIG_OPTION([wget])
+CTNG_SET_KCONFIG_OPTION([wget])
 AC_SUBST([wget])
 
 AC_CHECK_PROGS([curl], [curl])
-ACX_SET_KCONFIG_OPTION([curl])
+CTNG_SET_KCONFIG_OPTION([curl])
 AC_SUBST([curl])
 
-ACX_CHECK_PROGS_REQ([stat], [stat])
-AC_CACHE_CHECK([whether stat takes GNU or BSD format],
-    [acx_cv_stat_flavor],
-    [touch conftest
-     chmod 642 conftest
-     attr_bsd=`stat -f '%Lp' conftest 2>/dev/null`
-     attr_gnu=`stat -c '%a' conftest 2>/dev/null`
-     rm -f conftest
-     AS_IF([test "$attr_bsd" = "642"],
-       [acx_cv_stat_flavor=BSD],
-       [test "$attr_gnu" = "642"],
-       [acx_cv_stat_flavor=GNU],
-       [AC_MSG_ERROR([cannot determine stat(1) format option])])])
-
-# FIXME: support SET_KCONFIG_OPTION with string values? But then
-# again, these checks may be moved into ct-ng script.
-test "$acx_cv_stat_flavor" = "BSD" && stat_flavor_BSD=y
-ACX_SET_KCONFIG_OPTION([stat_flavor_BSD])
-test "$acx_cv_stat_flavor" = "GNU" && stat_flavor_GNU=y
-ACX_SET_KCONFIG_OPTION([stat_flavor_GNU])
-
-#Find out how to count CPUs
-AC_CACHE_CHECK([whether to use getconf or sysctl to count CPUs],
-    [acx_cv_cpu_count],
-    [getconf _NPROCESSORS_ONLN >/dev/null 2>&1 && \
-         acx_cv_cpu_count="getconf _NPROCESSORS_ONLN"
-     sysctl -n hw.ncpu >/dev/null 2>&1 && \
-         acx_cv_cpu_count="sysctl -n hw.ncpu"])
-AC_SUBST(CPU_COUNT, "$acx_cv_cpu_count")
+CTNG_PROG_STAT
 
-#--------------------------------------------------------------------
-# Still boring, but remember the path, now...
-#--------------------------------------------------------------------
-ACX_PATH_TOOL_REQ([PATCH], [gpatch patch], [patch])
+CTNG_CPU_COUNT
+
+CTNG_PATH_TOOL_REQ([PATCH], [gpatch patch], [patch])
 
-#--------------------------------------------------------------------
-# And a bunch of less boring tests...
-#--------------------------------------------------------------------
 # We need a bash that is >= 3.1
-ACX_PROG_VERSION_REQ_STRICT([BASH_SHELL],
+CTNG_PROG_VERSION_REQ_STRICT([BASH_SHELL],
     [GNU bash >= 3.1],
     [bash],
     [bash],
     ['^GNU bash, version (3\.[1-9]|4)'])
 
 # We need a awk that *is* GNU awk
-ACX_PROG_VERSION_REQ_STRICT([AWK],
+CTNG_PROG_VERSION_REQ_STRICT([AWK],
     [GNU awk],
     [awk],
     [gawk awk],
@@ -306,187 +159,142 @@ ACX_PROG_VERSION_REQ_STRICT([AWK],
 # build/install crosstool-ng itself.
 #----------------------------------------
 # Check for GNU make (want 3.81 or above, but will accept as long as any make is found)
-ACX_PROG_VERSION_REQ_ANY([MAKE],
+CTNG_PROG_VERSION_REQ_ANY([MAKE],
     [GNU make >= 3.81],
     [make],
     [gmake make],
     ['^GNU Make (3\.8[1-9]|3\.9[0-9]|[4-9]\.)'],
     [make_3_81_or_newer])
 
-# Check other companion tools that we may or may not build
-ACX_PROG_VERSION([LIBTOOL],
+# Check other companion tools that we may or may not build.
+CTNG_PROG_VERSION([LIBTOOL],
     [GNU libtool >= 2.4],
     [libtool],
     [glibtool libtool],
     ['\(GNU libtool\) ([3-9]\.|2.[4-9]|2.[1-3][0-9])'],
     [libtool_2_4_or_newer])
 
-ACX_PROG_VERSION([LIBTOOLIZE],
+CTNG_PROG_VERSION([LIBTOOLIZE],
     [GNU libtoolize >= 2.4],
     [libtoolize],
     [glibtoolize libtoolize],
     ['\(GNU libtool\) ([3-9]\.|2.[4-9]|2.[1-3][0-9])'],
     [libtoolize_2_4_or_newer])
 
-ACX_PROG_VERSION([AUTOCONF],
+CTNG_PROG_VERSION([AUTOCONF],
     [GNU autoconf >= 2.65],
     [autoconf],
     [autoconf],
     ['\(GNU Autoconf\) ([3-9]\.|2\.[7-9][0-9]|2\.6[5-9])'],
-    [autoconf_2_63_or_newer])
+    [autoconf_2_65_or_newer])
 
-ACX_PROG_VERSION([AUTORECONF],
+CTNG_PROG_VERSION([AUTORECONF],
     [GNU autoreconf >= 2.63],
     [autoreconf],
     [autoreconf],
-    ['\(GNU Autoconf\) ([3-9]\.|2\.[7-9][0-9]|2\.6[3-9])'],
-    [autoreconf_2_63_or_newer])
+    ['\(GNU Autoconf\) ([3-9]\.|2\.[7-9][0-9]|2\.6[5-9])'],
+    [autoreconf_2_65_or_newer])
 
-ACX_PROG_VERSION([AUTOMAKE],
+CTNG_PROG_VERSION([AUTOMAKE],
     [GNU automake >= 1.15],
     [automake],
     [automake],
     ['\(GNU automake\) ([2-9]\.|1\.[2-9][0-9]|1\.1[5-9])'],
     [automake_1_15_or_newer])
 
-ACX_PROG_VERSION([M4],
+CTNG_PROG_VERSION([M4],
     [GNU m4 >= 1.4.12],
     [m4],
     [gm4 m4],
     ['\(GNU M4\) ([2-9]\.|1\.[5-9]|1\.[1-4][0-9]|1\.4\.[2-9][0-9]|1\.4\.1[2-9])'],
     [gnu_m4_1_4_12_or_newer])
 
-#----------------------------------------
-# Gperf 3.1 started generating functions with size_t rather than unsigned int
-AC_MSG_CHECKING([for the type used in gperf declarations])
-echo "#include <string.h>" > conftest.gperf.c
-echo "const char * in_word_set(const char *, GPERF_LEN_TYPE);" >> conftest.gperf.c
-echo foo,bar | ${GPERF} -L ANSI-C >> conftest.gperf.c
-AS_IF([${CC} -c -o /dev/null conftest.gperf.c -DGPERF_LEN_TYPE='size_t' >/dev/null 2>&1],
-            [AC_MSG_RESULT([size_t])
-             GPERF_LEN_TYPE='size_t'],
-        [${CC} -c -o /dev/null conftest.gperf.c -DGPERF_LEN_TYPE='unsigned int' >/dev/null 2>&1],
-            [AC_MSG_RESULT([unsigned int])
-             GPERF_LEN_TYPE='unsigned int'],
-        [AC_MSG_ERROR([unable to determine gperf len type])])
-rm -f conftest.gperf.c
-AC_SUBST([GPERF_LEN_TYPE])
-
-#--------------------------------------------------------------------
-# Boring again... But still a bit of work to do...
-#--------------------------------------------------------------------
 AC_SUBST([kconfig_options])
 
-#----------------------------------------
 AC_CHECK_PROGS([cvs], [cvs])
-ACX_SET_KCONFIG_OPTION([cvs])
+CTNG_SET_KCONFIG_OPTION([cvs])
 
-#----------------------------------------
 AC_CHECK_PROGS([svn], [svn])
-ACX_SET_KCONFIG_OPTION([svn])
+CTNG_SET_KCONFIG_OPTION([svn])
 
 AC_CHECK_PROGS([git], [git])
-ACX_SET_KCONFIG_OPTION([git])
+CTNG_SET_KCONFIG_OPTION([git])
 
-AC_CHECK_PROGS([DPKG_BUILDFLAGS], [dpkg-buildflags])
-
-#--------------------------------------------------------------------
-# Now, for some fun...
-#--------------------------------------------------------------------
+# FIXME why checking if not using the result? We don't provide replacemant malloc/alloca/...
 AC_C_INLINE
 AC_HEADER_STDC
 AC_FUNC_MALLOC
 AC_FUNC_REALLOC
 AC_FUNC_ALLOCA
 
-#----------------------------------------
-# Check for gettext and libintl for the kconfig frontends
-AC_SUBST([gettext])
-AC_CHECK_HEADERS(
-    [libintl.h],
-    [ac_ct_gettext_hdr=$ac_header; break])
-AS_IF(
-    [test -n "$ac_ct_gettext_hdr"],
-    [AC_CHECK_DECL(
-        [gettext],
-        [gettext=y],,
-        [AC_INCLUDES_DEFAULT()
-         #include <$ac_ct_gettext_hdr>])])
-SAVE_LIBS=$LIBS
-AC_SEARCH_LIBS(bindtextdomain, intl, [test "$ac_res" = "none required" || INTL_LIBS="${ac_res}"])
-LIBS=$SAVE_LIBS
-AC_SUBST([INTL_LIBS])
-
-#----------------------------------------
-# Check for ncurses, for the kconfig frontends
-AC_SUBST([ac_ct_curses_hdr])
-AC_CHECK_HEADERS(
-    [ncurses/ncurses.h ncurses/curses.h ncursesw/curses.h ncurses.h curses.h],
-    [ac_ct_curses_hdr=$ac_header; break])
-AS_IF(
-    [test -z "$ac_ct_curses_hdr"],
-    [AC_MSG_ERROR([could not find curses header, required for the kconfig frontends])])
-AC_SEARCH_LIBS(
-    [initscr],
-    [ncursesw ncurses curses],
-    [ac_ct_curses_lib_found=yes; break])
-AS_IF(
-    [test -z "$ac_ct_curses_lib_found"],
-    [AC_MSG_ERROR([could not find curses library, required for the kconfig frontends])])
-AC_SEARCH_LIBS(
-    [tgetent],
-    [termcap tinfo ncursesw ncurses curses])
-
-#--------------------------------------------------------------------
-# Lastly, take care of crosstool-NG internal values
-#--------------------------------------------------------------------
-# Hey! We need the date! :-)
-DATE_FMT="%Y%m%d"
-if test "x$SOURCE_DATE_EPOCH" = "x"; then
-    DATE=$(date "+$DATE_FMT")
-else
-    DATE="$(date -u -d "@$SOURCE_DATE_EPOCH" "+$DATE_FMT" 2>/dev/null || date -u -r "$SOURCE_DATE_EPOCH" "+$DATE_FMT" 2>/dev/null || date -u "+$DATE_FMT")"
-fi
+AM_GNU_GETTEXT([external])
+AM_GNU_GETTEXT_VERSION([0.19.8])
+
+# For now, curses are needed to build kconfig. We may support a command-line
+# only configuration without curses later. For now, fail in configure but
+# consider it ok in config.h.
+AX_WITH_CURSES
+AS_IF([test "x$ax_cv_curses" != "xyes" ], [AC_MSG_ERROR([curses library not found])])
+AX_WITH_CURSES_PANEL
+AS_IF([test "x$ax_cv_panel" != "xyes" ], [AC_MSG_ERROR([panel library not found])])
+AX_WITH_CURSES_MENU
+AS_IF([test "x$ax_cv_menu" != "xyes" ], [AC_MSG_ERROR([menu library not found])])
+
+AH_BOTTOM([
+/* Select the correct curses/menu/panel headers */
+#if defined HAVE_NCURSESW_CURSES_H
+#  define CURSES_LOC <ncursesw/curses.h>
+#elif defined HAVE_NCURSESW_H
+#  define CURSES_LOC <ncursesw.h>
+#elif defined HAVE_NCURSES_CURSES_H
+#  define CURSES_LOC <ncurses/curses.h>
+#elif defined HAVE_NCURSES_H
+#  define CURSES_LOC <ncurses.h>
+#elif defined HAVE_CURSES_H
+#  define CURSES_LOC <curses.h>
+#else
+#  /* not an error - maybe a configuration didn't need curses */
+#endif
+
+#if defined HAVE_NCURSESW_PANEL_H
+#  define PANEL_LOC <ncursesw/panel.h>
+#elif defined HAVE_NCURSES_PANEL_H
+#  define PANEL_LOC <ncurses/panel.h>
+#elif defined HAVE_PANEL_H
+#  define PANEL_LOC <panel.h>
+#else
+#  /* not an error */
+#endif
+
+#if defined HAVE_NCURSESW_MENU_H
+#  define MENU_LOC <ncursesw/menu.h>
+#elif defined HAVE_NCURSES_MENU_H
+#  define MENU_LOC <ncurses/menu.h>
+#elif defined HAVE_MENU_H
+#  define MENU_LOC <menu.h>
+#else
+#  /* not an error */
+#endif
+])
+
+AX_BUILD_DATE_EPOCH(DATE, [%c])
 AC_SUBST([DATE])
 
-# Decorate the version string if needed
+AM_CONDITIONAL([INSTALL_USER_MANUAL], [test ! -f "${srcdir}/docs/MANUAL_ONLINE"])
+AC_MSG_CHECKING([if the manual needs to be installed])
+AM_COND_IF([INSTALL_USER_MANUAL], [AC_MSG_RESULT([yes])], [AC_MSG_RESULT([no])])
+
+# FIXME Retire? We don't want to debug a version that has been mislabeled by a user
+# Decorate the version string per user-supplied version.sh, if any
 AS_IF(
     [test -f version.sh -a -x version.sh],
-    [V=$(./version.sh "${PACKAGE_VERSION}")])
-AS_IF(
-    [test -n "${V}"],
-    [PACKAGE_VERSION="${V}"],
-    [AS_CASE(
-        [${PACKAGE_VERSION}],
-        [git|*+git],
-        [rev_id="$( git rev-parse --short HEAD )"
-         git diff-index --quiet HEAD || rev_id="${rev_id}-dirty"
-         PACKAGE_VERSION="${PACKAGE_VERSION}+${rev_id:-unknown-$( date +%Y%m%d.%H%M%S )}"
-        ])])
-# Arrange to have no / in the directory name, no need to create an
-# arbitrarily deep directory structure
-[PACKAGE_VERSION="$( printf "${PACKAGE_VERSION}\n" |"${SED}" -r -e 's:/+:_:g;' )"]
-
-# Handle the local case
-AC_SUBST([sublibdir])
-AC_SUBST([subdocdir])
-AS_IF(
-    [test "x$enable_local" = "xyes"],
-    [AC_MSG_NOTICE([overiding all of --prefix and the likes, because --enable-local was set])
-     prefix=$(pwd)
-     exec_prefix="$prefix"
-     bindir="$prefix"
-     libdir="$prefix"
-     sublibdir=""
-     docdir="$prefix""/docs"
-     subdocdir=""
-     datarootdir="$prefix"
-     mandir="$docdir"],
-    [sublibdir="/\${VERSION}"
-     subdocdir="/\${VERSION}"])
+    [PACKAGE_VERSION=$(./version.sh "${PACKAGE_VERSION}")])
+
+AC_CONFIG_FILES([
+    Makefile
+    paths.sh
+    kconfig/Makefile
+    config/configure.in
+])
 
-#--------------------------------------------------------------------
-# Finally, generate the output file(s)
-#--------------------------------------------------------------------
-AC_CONFIG_FILES([Makefile kconfig/Makefile config/configure.in])
 AC_OUTPUT
diff --git a/ct-ng.in b/ct-ng.in
index a61637b..2331b86 100644
--- a/ct-ng.in
+++ b/ct-ng.in
@@ -1,4 +1,4 @@
-#!@@CT_make@@ -rf
+#!@MAKE@ -rf
 # Makefile for crosstool-NG.
 # Copyright 2006 Yann E. MORIN <yann.morin.1998@free.fr>
 
@@ -14,16 +14,40 @@ export CT_NG:=$(abspath $(lastword $(MAKEFILE_LIST)))
 # and this is where we're working in:
 export CT_TOP_DIR:=$(shell pwd)
 
+ifeq (@enable_local@,yes)
+# automake does not allow to set pkgxxxdir, they are always derived from
+# a respective xxxdir. So, for enable-local case, set them directly here.
+export CT_LIB_DIR:=$(shell cd "@srcdir@" && pwd)
+export CT_LIBEXEC_DIR:=$(CT_TOP_DIR)/kconfig
+export CT_DOC_DIR:=$(CT_TOP_DIR)/docs
+else
 # Paths and values set by ./configure
 # Don't bother to change it other than with a new ./configure!
-export CT_LIB_DIR:=@@CT_LIBDIR@@
-export CT_DOC_DIR:=@@CT_DOCDIR@@
+export CT_LIB_DIR:=@pkgdatadir@
+export CT_LIBEXEC_DIR:=@pkglibexecdir@
+export CT_DOC_DIR:=@docdir@
+endif
 
 # This is crosstool-NG version string
-export CT_VERSION:=@@CT_VERSION@@
+export CT_VERSION:=@PACKAGE_VERSION@
+
+# Download agents used by scripts.mk
+CT_WGET     := @wget@
+CT_CURL     := @curl@
 
 # Paths found by ./configure
-include $(CT_LIB_DIR)/paths.mk
+export install      = @INSTALL@
+export bash         = @BASH_SHELL@
+export awk          = @AWK@
+export grep         = @GREP@
+export make         = @MAKE@
+export sed          = @SED@
+export libtool      = @LIBTOOL@
+export libtoolize   = @LIBTOOLIZE@
+export objcopy      = @OBJCOPY@
+export objdump      = @OBJDUMP@
+export readelf      = @READELF@
+export patch        = @PATCH@
 
 # Some distributions (eg. Ubuntu) thought it wise to point /bin/sh to
 # a truly POSIX-conforming shell, ash in this case. This is not so good
@@ -62,6 +86,59 @@ all: help
 PHONY += all
 FORCE:
 
+# Configuration rules. Currently, saveSample.sh uses some of the variables
+# below - they should be passed explicitly.
+
+# Top file of crosstool-NG configuration
+export KCONFIG_TOP = $(CT_LIB_DIR)/config/config.in
+
+# We need CONF for savedefconfig in scripts/saveSample.sh
+export CONF  := $(CT_LIBEXEC_DIR)/conf
+MCONF := $(CT_LIBEXEC_DIR)/mconf
+NCONF := $(CT_LIBEXEC_DIR)/nconf
+
+# Used by conf/mconf/nconf to find the .in files
+# TBD needed? We do supply the defconfig name explicitly below
+export srctree=$(CT_LIB_DIR)
+
+.PHONY: menuconfig nconfig oldconfig savedefconfig defconfig
+
+menuconfig:
+	@$(CT_ECHO) "  CONF  $@"
+	$(SILENT)$(MCONF) $(KCONFIG_TOP)
+
+nconfig:
+	@$(CT_ECHO) "  CONF  $@"
+	$(SILENT)$(NCONF) $(KCONFIG_TOP)
+
+oldconfig: .config
+	@$(CT_ECHO) "  CONF  $@"
+	$(SILENT)$(sed) -i -r -f $(CT_LIB_DIR)/scripts/upgrade.sed $<
+	$(SILENT)$(CONF) --silent$@ $(KCONFIG_TOP)
+
+savedefconfig: .config
+	@$(CT_ECHO) '  GEN   $@'
+	$(SILENT)$(CONF) --savedefconfig=$${DEFCONFIG-defconfig} $(KCONFIG_TOP)
+
+defconfig:
+	@$(CT_ECHO) '  CONF  $@'
+	$(SILENT)$(CONF) --defconfig=$${DEFCONFIG-defconfig} $(KCONFIG_TOP)
+
+# Always be silent, the stdout an be >.config
+extractconfig:
+	@$(awk) 'BEGIN { dump=0; }                                                  \
+	         dump==1 && $$0~/^\[.....\][[:space:]]+(# )?CT_/ {                  \
+	             $$1="";                                                        \
+	             gsub("^[[:space:]]","");                                       \
+	             print;                                                         \
+	         }                                                                  \
+	         $$0~/Dumping user-supplied crosstool-NG configuration: done in/ {  \
+	             dump=0;                                                        \
+	         }                                                                  \
+	         $$0~/Dumping user-supplied crosstool-NG configuration$$/ {         \
+	             dump=1;                                                        \
+	         }'
+
 # Help system
 help:: help-head help-config help-samples help-build help-clean help-distrib help-env help-tail
 
@@ -79,6 +156,7 @@ help-samples::
 help-build::
 	@echo
 	@echo  'Build actions (#: force number of // jobs):'
+	@echo  '  list-steps         - List all build steps'
 
 help-clean::
 	@echo
@@ -90,7 +168,13 @@ help-distrib::
 
 help-env::
 	@echo
-	@echo  'Environment variables (see @@CT_DOCDIR@@/0 - Table of content.txt):'
+	@if [ -r "@docdir@/manual/4_Building.md" ]; then \
+		echo 'Environment variables (see @docdir@/0 - Table of content.txt):'; \
+	else \
+		echo 'Environment variables (see http://crosstool-ng.github.io/docs/build/)'; \
+	fi
+	@echo  '  STOP=step          - Stop the build just after this step (list with list-steps)'
+	@echo  '  RESTART=step       - Restart the build just before this step (list with list-steps)'
 
 help-tail::
 	@echo
@@ -107,12 +191,18 @@ help-clean::
 	@echo  '  clean              - Remove generated files'
 	@echo  '  distclean          - Remove generated files, configuration and build directories'
 
-include $(CT_LIB_DIR)/kconfig/kconfig.mk
-include $(CT_LIB_DIR)/steps.mk
 include $(CT_LIB_DIR)/samples/samples.mk
 include $(CT_LIB_DIR)/scripts/scripts.mk
 
 help-config::
+	@echo  '  menuconfig         - Update current config using a menu based program'
+	@echo  '  nconfig            - Update current config using a menu based program'
+	@echo  '  oldconfig          - Update current config using a provided .config as base'
+	@echo  '  extractconfig      - Extract to stdout the configuration items from a'
+	@echo  '                       build.log file piped to stdin'
+	@echo  '  savedefconfig      - Save current config as a mini-defconfig to $${DEFCONFIG}'
+	@echo  '  defconfig          - Update config from a mini-defconfig $${DEFCONFIG}'
+	@echo  '                       (default: $${DEFCONFIG}=./defconfig)'
 	@echo  '  show-tuple         - Print the tuple of the currently configured toolchain'
 
 help-distrib::
@@ -139,11 +229,66 @@ source: .config
 	$(SILENT)CT_SOURCE=y $(bash) $(CT_LIB_DIR)/scripts/crosstool-NG.sh
 
 build: .config
-	$(SILENT)$(bash) $(CT_LIB_DIR)/scripts/crosstool-NG.sh
+	$(SILENT)BUILD_NCPUS=`@@CT_cpucount@@ 2>/dev/null || echo 0` \
+        $(bash) $(CT_LIB_DIR)/scripts/crosstool-NG.sh
 
 build.%:
 	$(SILENT)$(MAKE) -rf $(CT_NG) build CT_JOBS=$*
 
+# The _for_build steps are noop for native and cross,
+# but are actual steps for canadian and cross-native.
+# Please keep the last line with a '\' and keep the following empty line:
+# it helps when diffing and merging.
+CT_STEPS := \
+            companion_tools_for_build  \
+            companion_libs_for_build   \
+            binutils_for_build         \
+            companion_tools_for_host   \
+            companion_libs_for_host    \
+            binutils_for_host          \
+            cc_core_pass_1             \
+            kernel_headers             \
+            libc_start_files           \
+            cc_core_pass_2             \
+            libc                       \
+            cc_for_build               \
+            cc_for_host                \
+            libc_post_cc               \
+            companion_libs_for_target  \
+            binutils_for_target        \
+            debug                      \
+            test_suite                 \
+            finish                     \
+
+# Keep an empty line above this comment, so the last
+# back-slash terminated line works as expected.
+
+# Make the list available to sub-processes (scripts/crosstool-NG.sh needs it)
+export CT_STEPS
+
+# Print the steps list
+PHONY += list-steps
+list-steps:
+	@echo  'Available build steps, in order:'
+	@for step in $(CT_STEPS); do    \
+	     echo "  - $${step}";       \
+	 done
+	@echo  'Use "<step>" as action to execute only that step.'
+	@echo  'Use "+<step>" as action to execute up to that step.'
+	@echo  'Use "<step>+" as action to execute from that step onward.'
+
+# ----------------------------------------------------------
+# This part deals with executing steps
+
+$(CT_STEPS):
+	$(SILENT)$(MAKE) -rf $(CT_NG) V=$(V) RESTART=$@ STOP=$@ build
+
+$(patsubst %,+%,$(CT_STEPS)):
+	$(SILENT)$(MAKE) -rf $(CT_NG) V=$(V) STOP=$(patsubst +%,%,$@) build
+
+$(patsubst %,%+,$(CT_STEPS)):
+	$(SILENT)$(MAKE) -rf $(CT_NG) V=$(V) RESTART=$(patsubst %+,%,$@) build
+
 PHONY += version
 version:
 	@echo 'This is crosstool-NG version $(CT_VERSION)'
diff --git a/debian/control b/debian/control
index f6e7eea..4c2a95e 100644
--- a/debian/control
+++ b/debian/control
@@ -3,7 +3,7 @@ Section: devel
 Priority: optional
 Maintainer: Multiple Candidates <open@example.com>
 Build-Depends: debhelper (>= 9), autoconf, automake, autotools-dev,
- libncursesw5-dev, libncurses5-dev, gperf, bison, flex,
+ libncursesw5-dev, libncurses5-dev, bison, flex,
  texinfo, help2man, gawk, git, subversion, bzip2, libtool-bin
 Standards-Version: 3.9.8
 Homepage: http://crosstool-ng.org/
diff --git a/debian/rules b/debian/rules
index b8fd445..4a3a8e3 100755
--- a/debian/rules
+++ b/debian/rules
@@ -19,7 +19,7 @@ include /usr/share/dpkg/default.mk
 
 # main packaging script based on dh7 syntax
 %:
-	MAKELEVEL=0 dh $@
+	dh $@
 
 # Make sure we call ./bootstrap before running dh_auto_configure
 override_dh_auto_configure:
@@ -28,8 +28,7 @@ override_dh_auto_configure:
 
 #Make sure to include bash completion file in the package
 override_dh_auto_install:
-	MAKELEVEL=0 dh_auto_install
-	install -D -m 0644 ct-ng.comp $$(pwd)/debian/crosstool-ng/usr/share/bash-completion/completions/ct-ng.comp
+	dh_auto_install
 
 override_dh_update_autotools_config:
     @:
diff --git a/docs/MANUAL_ONLINE b/docs/MANUAL_ONLINE
index 3f36b42..8457b20 100644
--- a/docs/MANUAL_ONLINE
+++ b/docs/MANUAL_ONLINE
@@ -1 +1,4 @@
-http://crosstool-ng.github.io/docs
+This is a development version of crosstool-NG. It does not ship with
+a user manual; please refer to the online documentation at:
+
+   http://crosstool-ng.github.io/docs
diff --git a/docs/ct-ng.1.in b/docs/ct-ng.1.in
index 4630f30..924bdd5 100644
--- a/docs/ct-ng.1.in
+++ b/docs/ct-ng.1.in
@@ -5,15 +5,15 @@
 .\" Beautifying URLs
 .mso www.tmac
 .\"
-.TH crosstool-NG 1 "@@CT_DATE@@" "version @@CT_VERSION@@" "User Commands"
+.TH crosstool-NG 1 "@DATE@" "version @PACKAGE_VERSION@" "User Commands"
 .\"
 .\"
 .SH NAME
-@@CT_PROG_NAME@@, crosstool-NG \- Build cross-toolchains
+@progname@, crosstool-NG \- Build cross-toolchains
 .\"
 .\"
 .SH SYNOPSIS
-.B @@CT_PROG_NAME@@ ACTION
+.B @progname@ ACTION
 .\"
 .\"
 .SH DESCRIPTION
@@ -28,7 +28,7 @@ according to the targeted processor.
 .SH ACTIONS
 Here are the most commonly used actions. For other actions, please see the
 documentation in
-.I @@CT_DOCDIR@@
+.I @docdir@
 .TP
 .B help
 Prints a little help text.
@@ -53,7 +53,7 @@ configuration, and associated components' config files, into a sample. Samples
 are saved in their own sub-directory, named after the target's tuple, in the
 .I samples
 sub-directory of the current directory. Samples can be later recalled by calling
-.B @@CT_PROG_NAME@@
+.B @progname@
 with the target tuple they represent.
 .\"
 .TP
@@ -117,13 +117,6 @@ configuration file. The generated toolchain is left untouched, as well as
 samples which are not removed.
 .\"
 .TP
-.B regtest
-Calls the
-.B crosstool-NG
-regression test suite. All samples are build, and the regression test suite is
-run against every one of them.
-.\"
-.TP
 .B updatetools
 Updates the
 .I config.guess
@@ -144,7 +137,7 @@ The list of steps is viewable with the action
 .\"
 .SH EXIT VALUE
 The
-.B @@CT_PROG_NAME@@
+.B @progname@
 frontend is in fact a
 .BR make (1)
 script. See the man page for
@@ -170,7 +163,7 @@ Yann E. MORIN and a lot of contributors.
 .\"
 .SH SEE ALSO
 You can find more in-depth documentation in
-.IR "@@CT_DOCDIR@@" .
+.IR "@docdir@" .
 
 Please have a look at the
 .URL "http://www.kegel.com/crosstool" "original crosstool" " by Daniel KEGEL"
diff --git a/kconfig/.gitignore b/kconfig/.gitignore
index 49c0689..69967bc 100644
--- a/kconfig/.gitignore
+++ b/kconfig/.gitignore
@@ -1,8 +1,9 @@
 conf
 ?conf
 *.o
-*.dep
+.deps
+zconf.c
 zconf.lex.c
-zconf.tab.c
 *.exe
 Makefile
+.dirstamp
diff --git a/kconfig/Makefile.am b/kconfig/Makefile.am
new file mode 100644
index 0000000..a54c170
--- /dev/null
+++ b/kconfig/Makefile.am
@@ -0,0 +1,49 @@
+## vim: set noet :
+
+## TBD turn off program renaming for these? Or account for it in ct-ng script?
+## TBD when kconfig is split into a subpackage, need to remove this option from sub-configure
+transform		= s,x,x,
+
+## TBD install into lib/crosstool-ng/kconfig? or move to libexec which seems more suitable
+pkglibexec_PROGRAMS    = conf nconf mconf
+
+EXTRA_DIST		= zconf.y zconf.l \
+				  expr.h list.h lkc.h lkc_proto.h nconf.h lxdialog/dialog.h \
+				  confdata.c expr.c kconf_id.c menu.c symbol.c util.c
+
+CLEANFILES		= zconf.lex.c zconf.c
+BUILT_SOURCES	= zconf.c zconf.lex.c
+
+AM_LFLAGS		= -L -Pzconf
+AM_YFLAGS		= -l -b zconf -p zconf
+AM_CPPFLAGS		= -include config.h -DCONFIG_=\"CT_\"
+
+conf_SOURCES    = conf.c zconf.c
+
+nconf_SOURCES	= nconf.c nconf.gui.c zconf.c
+nconf_CFLAGS	= $(CURSES_CFLAGS)
+nconf_LDADD		= $(MENU_LIBS) $(PANEL_LIBS) $(CURSES_LIBS)
+
+mconf_SOURCES	= mconf.c zconf.c lxdialog/checklist.c lxdialog/inputbox.c \
+				  lxdialog/menubox.c lxdialog/textbox.c lxdialog/util.c \
+				  lxdialog/yesno.c
+mconf_LDADD		= $(CURSES_LIBS)
+
+# automake's support for yacc/lex/gperf is too idiosyncratic. It doesn't
+# support a common pattern of including lex-generated file into yacc, nor does
+# it support using a different base name for the generated C files.
+YACCCOMPILE	= $(YACC) $(AM_YFLAGS) $(YFLAGS)
+AM_V_YACC		= $(am__v_YACC_@AM_V@)
+am__v_YACC_		= $(am__v_YACC_@AM_DEFAULT_V@)
+am__v_YACC_0	= @echo "  YACC    " $@;
+
+LEXCOMPILE	= $(LEX) $(AM_LFLAGS) $(LFLAGS)
+AM_V_LEX		= $(am__v_LEX_@AM_V@)
+am__v_LEX_		= $(am__v_LEX_@AM_DEFAULT_V@)
+am__v_LEX_0		= @echo "  LEX     " $@;
+
+zconf.c: zconf.y
+	$(AM_V_YACC)$(YACCCOMPILE) -o$@ $<
+
+zconf.lex.c: zconf.l
+	$(AM_V_LEX)$(LEXCOMPILE) -o$@ $<
diff --git a/kconfig/Makefile.in b/kconfig/Makefile.in
deleted file mode 100644
index 7e18b6e..0000000
--- a/kconfig/Makefile.in
+++ /dev/null
@@ -1,120 +0,0 @@
-#-----------------------------------------------------------
-# Hmmm! Cheesy build!
-# Or: where I can unveil my make-fu... :-]
-
-__silent = $(if $(V),,@printf '  %-7s %s\n' '$1' '$(if $2,$2,$(strip $<))' && )
-__silent_rm = $(call __silent,RM,$1)rm -f $1
-
-PROGS = conf mconf nconf
-
-all: $(PROGS)
-	@true   # Just be silent, you fscking son of a fscking beach...
-
-# Build flags
-CFLAGS = -DCONFIG_=\"CT_\" -DPACKAGE="\"crosstool-NG $(VERSION)\""
-LDFLAGS = $(INTL_LIBS)
-
-ifneq (@DPKG_BUILDFLAGS@,)
-CFLAGS += $(shell @DPKG_BUILDFLAGS@ --get CPPFLAGS) \
-          $(shell @DPKG_BUILDFLAGS@ --get CFLAGS)
-LDFLAGS += $(shell @DPKG_BUILDFLAGS@ --get LDFLAGS)
-endif
-
-# Compiler flags to use gettext
-ifeq ($(gettext),)
-INTL_CFLAGS = -Wno-format-security -DKBUILD_NO_NLS
-endif
-
-# Compiler and linker flags to use ncurses
-NCURSES_CFLAGS = -DCURSES_LOC="\"$(curses_hdr)\""
-NCURSES_LDFLAGS = $(LIBS)
-
-# Common source files
-COMMON_SRC = zconf.tab.c
-COMMON_OBJ = $(patsubst %.c,%.o,$(COMMON_SRC))
-COMMON_DEP = $(patsubst %.o,%.dep,$(COMMON_OBJ))
-$(COMMON_OBJ) $(COMMON_DEP): CFLAGS += $(INTL_CFLAGS) -I.
-
-# lxdialog source files
-LX_SRC = $(sort $(wildcard lxdialog/*.c))
-LX_OBJ = $(patsubst %.c,%.o,$(LX_SRC))
-LX_DEP = $(patsubst %.o,%.dep,$(LX_OBJ))
-$(LX_OBJ) $(LX_DEP): CFLAGS += $(NCURSES_CFLAGS) $(INTL_CFLAGS)
-
-# What's needed to build 'conf'
-conf_SRC = conf.c
-conf_OBJ = $(patsubst %.c,%.o,$(conf_SRC))
-conf_DEP = $(patsubst %.o,%.dep,$(conf_OBJ))
-$(conf_OBJ) $(conf_DEP): CFLAGS += $(INTL_CFLAGS)
-
-# What's needed to build 'mconf'
-mconf_SRC = mconf.c
-mconf_OBJ = $(patsubst %.c,%.o,$(mconf_SRC))
-mconf_DEP = $(patsubst %.c,%.dep,$(mconf_SRC))
-$(mconf_OBJ) $(mconf_DEP): CFLAGS += $(NCURSES_CFLAGS) $(INTL_CFLAGS)
-mconf: LDFLAGS += $(NCURSES_LDFLAGS)
-
-# What's needed to build 'nconf'
-nconf_SRC = nconf.c nconf.gui.c
-nconf_OBJ = $(patsubst %.c,%.o,$(nconf_SRC))
-nconf_DEP = $(patsubst %.c,%.dep,$(nconf_SRC))
-$(nconf_OBJ) $(nconf_DEP): CFLAGS += $(INTL_CFLAGS) -I/usr/include/ncurses
-nconf: LDFLAGS += -lmenu -lpanel $(LIBS)
-
-# These are generated files:
-ALL_OBJS = $(sort $(COMMON_OBJ) $(LX_OBJ) $(conf_OBJ) $(mconf_OBJ) $(nconf_OBJ))
-ALL_DEPS = $(sort $(COMMON_DEP) $(LX_DEP) $(conf_DEP) $(mconf_DEP) $(nconf_DEP))
-
-# Cheesy auto-dependencies
-DEPS = $(COMMON_DEP)
-DEPS += $(conf_DEP)
-DEPS += $(mconf_DEP) $(LX_DEP)
-DEPS += $(nconf_DEP)
--include $(DEPS)
-
-# Build the dependency for C files
-%.dep: %.c
-	$(call __silent,DEP,$@)$(CC) $(CFLAGS) $(EXTRA_CFLAGS) -MM $< |$(sed) -r -e 's|([^:]+.o)( *:+)|$(<:.c=.o) $@\2|;' >$@
-
-# Generate the grammar parser
-zconf.tab.o: zconf.tab.c zconf.lex.c
-zconf.tab.dep: zconf.tab.c zconf.lex.c
-
-.PRECIOUS: zconf.tab.c
-zconf.tab.c: zconf.y
-	$(call __silent,BISON)bison -l -b zconf -p zconf $<
-
-zconf.lex.c: zconf.l
-	$(call __silent,LEX)flex -L -Pzconf -o$@ $<
-
-# Build C files
-%.o: %.c
-	$(call __silent,CC)$(CC) $(CFLAGS) $(EXTRA_CFLAGS) -o $@ -c $<
-
-# Actual link
-mconf: $(COMMON_OBJ) $(LX_OBJ) $(mconf_OBJ)
-	$(call __silent,LD,$@)$(CC) -o $@ $^ $(LDFLAGS) $(EXTRA_LDFLAGS)
-
-nconf: $(COMMON_OBJ) $(nconf_OBJ)
-	$(call __silent,LD,$@)$(CC) -o $@ $^ $(LDFLAGS) $(EXTRA_LDFLAGS)
-
-conf: $(COMMON_OBJ) $(conf_OBJ)
-	$(call __silent,LD,$@)$(CC) -o $@ $^ $(LDFLAGS) $(EXTRA_LDFLAGS)
-
-#-----------------------------------------------------------
-# Installation
-install: $(patsubst %,install-%,$(PROGS)) install-kconfig.mk
-
-$(patsubst %,install-%,$(PROGS)): install-%: %
-	$(call __silent,INSTALL,$<)install -m 0755 $< $(DESTDIR)/$<
-
-install-kconfig.mk: kconfig.mk
-	$(call __silent,INSTALL,$<)install -m 0644 $< $(DESTDIR)/$<
-
-#-----------------------------------------------------------
-# Cleaning up the mess...
-
-clean:
-	$(call __silent,RM,objs)rm -f $(ALL_OBJS) $(ALL_DEPS)
-	$(call __silent_rm,$(PROGS))
-	$(call __silent_rm,zconf.tab.c zconf.lex.c lex.backup)
diff --git a/kconfig/kconfig.mk b/kconfig/kconfig.mk
deleted file mode 100644
index c489c72..0000000
--- a/kconfig/kconfig.mk
+++ /dev/null
@@ -1,68 +0,0 @@
-# ===========================================================================
-# crosstool-NG configuration targets
-# These targets are used from top-level makefile
-
-#-----------------------------------------------------------
-# The configurators rules
-
-# Top file of crosstool-NG configuration
-export KCONFIG_TOP = $(CT_LIB_DIR)/config/config.in
-
-# We need CONF for savedefconfig in scripts/saveSample.sh
-export CONF  := $(CT_LIB_DIR)/kconfig/conf
-MCONF := $(CT_LIB_DIR)/kconfig/mconf
-NCONF := $(CT_LIB_DIR)/kconfig/nconf
-
-# Used by conf/mconf/nconf to find the .in files
-export srctree=$(CT_LIB_DIR)
-
-.PHONY: menuconfig nconfig oldconfig savedefconfig defconfig
-
-menuconfig:
-	@$(CT_ECHO) "  CONF  $@"
-	$(SILENT)$(MCONF) $(KCONFIG_TOP)
-
-nconfig:
-	@$(CT_ECHO) "  CONF  $@"
-	$(SILENT)$(NCONF) $(KCONFIG_TOP)
-
-oldconfig: .config
-	@$(CT_ECHO) "  CONF  $@"
-	$(SILENT)$(sed) -i -r -f $(CT_LIB_DIR)/scripts/upgrade.sed $<
-	$(SILENT)$(CONF) --silent$@ $(KCONFIG_TOP)
-
-savedefconfig: .config
-	@$(CT_ECHO) '  GEN   $@'
-	$(SILENT)$(CONF) --savedefconfig=$${DEFCONFIG-defconfig} $(KCONFIG_TOP)
-
-defconfig:
-	@$(CT_ECHO) '  CONF  $@'
-	$(SILENT)$(CONF) --defconfig=$${DEFCONFIG-defconfig} $(KCONFIG_TOP)
-
-# Always be silent, the stdout an be >.config
-extractconfig:
-	@$(awk) 'BEGIN { dump=0; }                                                  \
-	         dump==1 && $$0~/^\[.....\][[:space:]]+(# )?CT_/ {                  \
-	             $$1="";                                                        \
-	             gsub("^[[:space:]]","");                                       \
-	             print;                                                         \
-	         }                                                                  \
-	         $$0~/Dumping user-supplied crosstool-NG configuration: done in/ {  \
-	             dump=0;                                                        \
-	         }                                                                  \
-	         $$0~/Dumping user-supplied crosstool-NG configuration$$/ {         \
-	             dump=1;                                                        \
-	         }'
-
-#-----------------------------------------------------------
-# Help text used by make help
-
-help-config::
-	@echo  '  menuconfig         - Update current config using a menu based program'
-	@echo  '  nconfig            - Update current config using a menu based program'
-	@echo  '  oldconfig          - Update current config using a provided .config as base'
-	@echo  '  extractconfig      - Extract to stdout the configuration items from a'
-	@echo  '                       build.log file piped to stdin'
-	@echo  '  savedefconfig      - Save current config as a mini-defconfig to $${DEFCONFIG}'
-	@echo  '  defconfig          - Update config from a mini-defconfig $${DEFCONFIG}'
-	@echo  '                       (default: $${DEFCONFIG}=./defconfig)'
diff --git a/kconfig/lxdialog/.gitignore b/kconfig/lxdialog/.gitignore
deleted file mode 100644
index f2e85c0..0000000
--- a/kconfig/lxdialog/.gitignore
+++ /dev/null
@@ -1,2 +0,0 @@
-*.o
-*.dep
diff --git a/m4/README b/m4/README
new file mode 100644
index 0000000..a572d61
--- /dev/null
+++ b/m4/README
@@ -0,0 +1,7 @@
+These autoconf helper macros come from various sources:
+
+- ax_*.m4: autoconf-archive, version 2017.09.28 (copied)
+- pkg.m4: pkg-config, version 0.29.2 (run configure, then copy)
+- gettext.m4, iconv.m4, intlmacosx.m4, nls.m4: gettext 0.19.8
+- ctng_*.m4: obviously, implemented anew
+- po.m4: a local dummy stub for gettext's version
diff --git a/m4/ax_build_date_epoch.m4 b/m4/ax_build_date_epoch.m4
new file mode 100644
index 0000000..dbecb06
--- /dev/null
+++ b/m4/ax_build_date_epoch.m4
@@ -0,0 +1,70 @@
+# ===========================================================================
+#   https://www.gnu.org/software/autoconf-archive/ax_build_date_epoch.html
+# ===========================================================================
+#
+# SYNOPSIS
+#
+#   AX_BUILD_DATE_EPOCH(VARIABLE[, FORMAT[, ACTION-IF-FAIL]])
+#
+# DESCRIPTION
+#
+#   Sets VARIABLE to a string representing the current time.  It is
+#   formatted according to FORMAT if specified, otherwise it is formatted as
+#   the number of seconds (excluding leap seconds) since the UNIX epoch (01
+#   Jan 1970 00:00:00 UTC).
+#
+#   If the SOURCE_DATE_EPOCH environment variable is set, it uses the value
+#   of that variable instead of the current time.  See
+#   https://reproducible-builds.org/specs/source-date-epoch).  If
+#   SOURCE_DATE_EPOCH is set but cannot be properly interpreted as a UNIX
+#   timestamp, then execute ACTION-IF-FAIL if specified, otherwise error.
+#
+#   VARIABLE is AC_SUBST-ed.
+#
+# LICENSE
+#
+#   Copyright (c) 2016 Eric Bavier <bavier@member.fsf.org>
+#
+#   This program is free software: you can redistribute it and/or modify it
+#   under the terms of the GNU General Public License as published by the
+#   Free Software Foundation, either version 3 of the License, or (at your
+#   option) any later version.
+#
+#   This program is distributed in the hope that it will be useful, but
+#   WITHOUT ANY WARRANTY; without even the implied warranty of
+#   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
+#   Public License for more details.
+#
+#   You should have received a copy of the GNU General Public License along
+#   with this program. If not, see <https://www.gnu.org/licenses/>.
+#
+#   As a special exception, the respective Autoconf Macro's copyright owner
+#   gives unlimited permission to copy, distribute and modify the configure
+#   scripts that are the output of Autoconf when processing the Macro. You
+#   need not follow the terms of the GNU General Public License when using
+#   or distributing such scripts, even though portions of the text of the
+#   Macro appear in them. The GNU General Public License (GPL) does govern
+#   all other use of the material that constitutes the Autoconf Macro.
+#
+#   This special exception to the GPL applies to versions of the Autoconf
+#   Macro released by the Autoconf Archive. When you make and distribute a
+#   modified version of the Autoconf Macro, you may extend this special
+#   exception to the GPL to apply to your modified version as well.
+
+#serial 2
+
+AC_DEFUN([AX_BUILD_DATE_EPOCH],
+[dnl
+AC_MSG_CHECKING([for build time])
+ax_date_fmt="m4_default($2,%s)"
+AS_IF([test x"$SOURCE_DATE_EPOCH" = x],
+ [$1=`date "+$ax_date_fmt"`],
+ [ax_build_date=`date -u -d "@$SOURCE_DATE_EPOCH" "+$ax_date_fmt" 2>/dev/null \
+                 || date -u -r "$SOURCE_DATE_EPOCH" "+$ax_date_fmt" 2>/dev/null`
+  AS_IF([test x"$ax_build_date" = x],
+   [m4_ifval([$3],
+      [$3],
+      [AC_MSG_ERROR([malformed SOURCE_DATE_EPOCH])])],
+   [$1=$ax_build_date])])
+AC_MSG_RESULT([$$1])
+])dnl AX_BUILD_DATE_EPOCH
diff --git a/m4/ax_require_defined.m4 b/m4/ax_require_defined.m4
new file mode 100644
index 0000000..17c3eab
--- /dev/null
+++ b/m4/ax_require_defined.m4
@@ -0,0 +1,37 @@
+# ===========================================================================
+#    https://www.gnu.org/software/autoconf-archive/ax_require_defined.html
+# ===========================================================================
+#
+# SYNOPSIS
+#
+#   AX_REQUIRE_DEFINED(MACRO)
+#
+# DESCRIPTION
+#
+#   AX_REQUIRE_DEFINED is a simple helper for making sure other macros have
+#   been defined and thus are available for use.  This avoids random issues
+#   where a macro isn't expanded.  Instead the configure script emits a
+#   non-fatal:
+#
+#     ./configure: line 1673: AX_CFLAGS_WARN_ALL: command not found
+#
+#   It's like AC_REQUIRE except it doesn't expand the required macro.
+#
+#   Here's an example:
+#
+#     AX_REQUIRE_DEFINED([AX_CHECK_LINK_FLAG])
+#
+# LICENSE
+#
+#   Copyright (c) 2014 Mike Frysinger <vapier@gentoo.org>
+#
+#   Copying and distribution of this file, with or without modification, are
+#   permitted in any medium without royalty provided the copyright notice
+#   and this notice are preserved. This file is offered as-is, without any
+#   warranty.
+
+#serial 2
+
+AC_DEFUN([AX_REQUIRE_DEFINED], [dnl
+  m4_ifndef([$1], [m4_fatal([macro ]$1[ is not defined; is a m4 file missing?])])
+])dnl AX_REQUIRE_DEFINED
diff --git a/m4/ax_with_curses.m4 b/m4/ax_with_curses.m4
new file mode 100644
index 0000000..dcdc129
--- /dev/null
+++ b/m4/ax_with_curses.m4
@@ -0,0 +1,582 @@
+# ===========================================================================
+#      https://www.gnu.org/software/autoconf-archive/ax_with_curses.html
+# ===========================================================================
+#
+# SYNOPSIS
+#
+#   AX_WITH_CURSES
+#
+# DESCRIPTION
+#
+#   This macro checks whether a SysV or X/Open-compatible Curses library is
+#   present, along with the associated header file.  The NcursesW
+#   (wide-character) library is searched for first, followed by Ncurses,
+#   then the system-default plain Curses.  The first library found is the
+#   one returned. Finding libraries will first be attempted by using
+#   pkg-config, and should the pkg-config files not be available, will
+#   fallback to combinations of known flags itself.
+#
+#   The following options are understood: --with-ncursesw, --with-ncurses,
+#   --without-ncursesw, --without-ncurses.  The "--with" options force the
+#   macro to use that particular library, terminating with an error if not
+#   found.  The "--without" options simply skip the check for that library.
+#   The effect on the search pattern is:
+#
+#     (no options)                           - NcursesW, Ncurses, Curses
+#     --with-ncurses     --with-ncursesw     - NcursesW only [*]
+#     --without-ncurses  --with-ncursesw     - NcursesW only [*]
+#                        --with-ncursesw     - NcursesW only [*]
+#     --with-ncurses     --without-ncursesw  - Ncurses only [*]
+#     --with-ncurses                         - NcursesW, Ncurses [**]
+#     --without-ncurses  --without-ncursesw  - Curses only
+#                        --without-ncursesw  - Ncurses, Curses
+#     --without-ncurses                      - NcursesW, Curses
+#
+#   [*]  If the library is not found, abort the configure script.
+#
+#   [**] If the second library (Ncurses) is not found, abort configure.
+#
+#   The following preprocessor symbols may be defined by this macro if the
+#   appropriate conditions are met:
+#
+#     HAVE_CURSES             - if any SysV or X/Open Curses library found
+#     HAVE_CURSES_ENHANCED    - if library supports X/Open Enhanced functions
+#     HAVE_CURSES_COLOR       - if library supports color (enhanced functions)
+#     HAVE_CURSES_OBSOLETE    - if library supports certain obsolete features
+#     HAVE_NCURSESW           - if NcursesW (wide char) library is to be used
+#     HAVE_NCURSES            - if the Ncurses library is to be used
+#
+#     HAVE_CURSES_H           - if <curses.h> is present and should be used
+#     HAVE_NCURSESW_H         - if <ncursesw.h> should be used
+#     HAVE_NCURSES_H          - if <ncurses.h> should be used
+#     HAVE_NCURSESW_CURSES_H  - if <ncursesw/curses.h> should be used
+#     HAVE_NCURSES_CURSES_H   - if <ncurses/curses.h> should be used
+#
+#   (These preprocessor symbols are discussed later in this document.)
+#
+#   The following output variables are defined by this macro; they are
+#   precious and may be overridden on the ./configure command line:
+#
+#     CURSES_LIBS  - library to add to xxx_LDADD
+#     CURSES_CFLAGS  - include paths to add to xxx_CPPFLAGS
+#
+#   In previous versions of this macro, the flags CURSES_LIB and
+#   CURSES_CPPFLAGS were defined. These have been renamed, in keeping with
+#   AX_WITH_CURSES's close bigger brother, PKG_CHECK_MODULES, which should
+#   eventually supersede the use of AX_WITH_CURSES. Neither the library
+#   listed in CURSES_LIBS, nor the flags in CURSES_CFLAGS are added to LIBS,
+#   respectively CPPFLAGS, by default. You need to add both to the
+#   appropriate xxx_LDADD/xxx_CPPFLAGS line in your Makefile.am. For
+#   example:
+#
+#     prog_LDADD = @CURSES_LIBS@
+#     prog_CPPFLAGS = @CURSES_CFLAGS@
+#
+#   If CURSES_LIBS is set on the configure command line (such as by running
+#   "./configure CURSES_LIBS=-lmycurses"), then the only header searched for
+#   is <curses.h>. If the user needs to specify an alternative path for a
+#   library (such as for a non-standard NcurseW), the user should use the
+#   LDFLAGS variable.
+#
+#   The following shell variables may be defined by this macro:
+#
+#     ax_cv_curses           - set to "yes" if any Curses library found
+#     ax_cv_curses_enhanced  - set to "yes" if Enhanced functions present
+#     ax_cv_curses_color     - set to "yes" if color functions present
+#     ax_cv_curses_obsolete  - set to "yes" if obsolete features present
+#
+#     ax_cv_ncursesw      - set to "yes" if NcursesW library found
+#     ax_cv_ncurses       - set to "yes" if Ncurses library found
+#     ax_cv_plaincurses   - set to "yes" if plain Curses library found
+#     ax_cv_curses_which  - set to "ncursesw", "ncurses", "plaincurses" or "no"
+#
+#   These variables can be used in your configure.ac to determine the level
+#   of support you need from the Curses library.  For example, if you must
+#   have either Ncurses or NcursesW, you could include:
+#
+#     AX_WITH_CURSES
+#     if test "x$ax_cv_ncursesw" != xyes && test "x$ax_cv_ncurses" != xyes; then
+#         AC_MSG_ERROR([requires either NcursesW or Ncurses library])
+#     fi
+#
+#   If any Curses library will do (but one must be present and must support
+#   color), you could use:
+#
+#     AX_WITH_CURSES
+#     if test "x$ax_cv_curses" != xyes || test "x$ax_cv_curses_color" != xyes; then
+#         AC_MSG_ERROR([requires an X/Open-compatible Curses library with color])
+#     fi
+#
+#   Certain preprocessor symbols and shell variables defined by this macro
+#   can be used to determine various features of the Curses library.  In
+#   particular, HAVE_CURSES and ax_cv_curses are defined if the Curses
+#   library found conforms to the traditional SysV and/or X/Open Base Curses
+#   definition.  Any working Curses library conforms to this level.
+#
+#   HAVE_CURSES_ENHANCED and ax_cv_curses_enhanced are defined if the
+#   library supports the X/Open Enhanced Curses definition.  In particular,
+#   the wide-character types attr_t, cchar_t and wint_t, the functions
+#   wattr_set() and wget_wch() and the macros WA_NORMAL and _XOPEN_CURSES
+#   are checked.  The Ncurses library does NOT conform to this definition,
+#   although NcursesW does.
+#
+#   HAVE_CURSES_COLOR and ax_cv_curses_color are defined if the library
+#   supports color functions and macros such as COLOR_PAIR, A_COLOR,
+#   COLOR_WHITE, COLOR_RED and init_pair().  These are NOT part of the
+#   X/Open Base Curses definition, but are part of the Enhanced set of
+#   functions.  The Ncurses library DOES support these functions, as does
+#   NcursesW.
+#
+#   HAVE_CURSES_OBSOLETE and ax_cv_curses_obsolete are defined if the
+#   library supports certain features present in SysV and BSD Curses but not
+#   defined in the X/Open definition.  In particular, the functions
+#   getattrs(), getcurx() and getmaxx() are checked.
+#
+#   To use the HAVE_xxx_H preprocessor symbols, insert the following into
+#   your system.h (or equivalent) header file:
+#
+#     #if defined HAVE_NCURSESW_CURSES_H
+#     #  include <ncursesw/curses.h>
+#     #elif defined HAVE_NCURSESW_H
+#     #  include <ncursesw.h>
+#     #elif defined HAVE_NCURSES_CURSES_H
+#     #  include <ncurses/curses.h>
+#     #elif defined HAVE_NCURSES_H
+#     #  include <ncurses.h>
+#     #elif defined HAVE_CURSES_H
+#     #  include <curses.h>
+#     #else
+#     #  error "SysV or X/Open-compatible Curses header file required"
+#     #endif
+#
+#   For previous users of this macro: you should not need to change anything
+#   in your configure.ac or Makefile.am, as the previous (serial 10)
+#   semantics are still valid.  However, you should update your system.h (or
+#   equivalent) header file to the fragment shown above. You are encouraged
+#   also to make use of the extended functionality provided by this version
+#   of AX_WITH_CURSES, as well as in the additional macros
+#   AX_WITH_CURSES_PANEL, AX_WITH_CURSES_MENU and AX_WITH_CURSES_FORM.
+#
+# LICENSE
+#
+#   Copyright (c) 2009 Mark Pulford <mark@kyne.com.au>
+#   Copyright (c) 2009 Damian Pietras <daper@daper.net>
+#   Copyright (c) 2012 Reuben Thomas <rrt@sc3d.org>
+#   Copyright (c) 2011 John Zaitseff <J.Zaitseff@zap.org.au>
+#
+#   This program is free software: you can redistribute it and/or modify it
+#   under the terms of the GNU General Public License as published by the
+#   Free Software Foundation, either version 3 of the License, or (at your
+#   option) any later version.
+#
+#   This program is distributed in the hope that it will be useful, but
+#   WITHOUT ANY WARRANTY; without even the implied warranty of
+#   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
+#   Public License for more details.
+#
+#   You should have received a copy of the GNU General Public License along
+#   with this program. If not, see <https://www.gnu.org/licenses/>.
+#
+#   As a special exception, the respective Autoconf Macro's copyright owner
+#   gives unlimited permission to copy, distribute and modify the configure
+#   scripts that are the output of Autoconf when processing the Macro. You
+#   need not follow the terms of the GNU General Public License when using
+#   or distributing such scripts, even though portions of the text of the
+#   Macro appear in them. The GNU General Public License (GPL) does govern
+#   all other use of the material that constitutes the Autoconf Macro.
+#
+#   This special exception to the GPL applies to versions of the Autoconf
+#   Macro released by the Autoconf Archive. When you make and distribute a
+#   modified version of the Autoconf Macro, you may extend this special
+#   exception to the GPL to apply to your modified version as well.
+
+#serial 18
+
+# internal function to factorize common code that is used by both ncurses
+# and ncursesw
+AC_DEFUN([_FIND_CURSES_FLAGS], [
+    AC_MSG_CHECKING([for $1 via pkg-config])
+
+    AX_REQUIRE_DEFINED([PKG_CHECK_EXISTS])
+    _PKG_CONFIG([_ax_cv_$1_libs], [libs], [$1])
+    _PKG_CONFIG([_ax_cv_$1_cppflags], [cflags], [$1])
+
+    AS_IF([test "x$pkg_failed" = "xyes" || test "x$pkg_failed" = "xuntried"],[
+        AC_MSG_RESULT([no])
+        # No suitable .pc file found, have to find flags via fallback
+        AC_CACHE_CHECK([for $1 via fallback], [ax_cv_$1], [
+            AS_ECHO()
+            pkg_cv__ax_cv_$1_libs="-l$1"
+            pkg_cv__ax_cv_$1_cppflags="-D_GNU_SOURCE $CURSES_CFLAGS"
+            LIBS="$ax_saved_LIBS $pkg_cv__ax_cv_$1_libs"
+            CPPFLAGS="$ax_saved_CPPFLAGS $pkg_cv__ax_cv_$1_cppflags"
+
+            AC_MSG_CHECKING([for initscr() with $pkg_cv__ax_cv_$1_libs])
+            AC_LINK_IFELSE([AC_LANG_CALL([], [initscr])],
+                [
+                    AC_MSG_RESULT([yes])
+                    AC_MSG_CHECKING([for nodelay() with $pkg_cv__ax_cv_$1_libs])
+                    AC_LINK_IFELSE([AC_LANG_CALL([], [nodelay])],[
+                        ax_cv_$1=yes
+                        ],[
+                        AC_MSG_RESULT([no])
+                        m4_if(
+                            [$1],[ncursesw],[pkg_cv__ax_cv_$1_libs="$pkg_cv__ax_cv_$1_libs -ltinfow"],
+                            [$1],[ncurses],[pkg_cv__ax_cv_$1_libs="$pkg_cv__ax_cv_$1_libs -ltinfo"]
+                        )
+                        LIBS="$ax_saved_LIBS $pkg_cv__ax_cv_$1_libs"
+
+                        AC_MSG_CHECKING([for nodelay() with $pkg_cv__ax_cv_$1_libs])
+                        AC_LINK_IFELSE([AC_LANG_CALL([], [nodelay])],[
+                            ax_cv_$1=yes
+                            ],[
+                            ax_cv_$1=no
+                        ])
+                    ])
+                ],[
+                    ax_cv_$1=no
+            ])
+        ])
+        ],[
+        AC_MSG_RESULT([yes])
+        # Found .pc file, using its information
+        LIBS="$ax_saved_LIBS $pkg_cv__ax_cv_$1_libs"
+        CPPFLAGS="$ax_saved_CPPFLAGS $pkg_cv__ax_cv_$1_cppflags"
+        ax_cv_$1=yes
+    ])
+])
+
+AU_ALIAS([MP_WITH_CURSES], [AX_WITH_CURSES])
+AC_DEFUN([AX_WITH_CURSES], [
+    AC_ARG_VAR([CURSES_LIBS], [linker library for Curses, e.g. -lcurses])
+    AC_ARG_VAR([CURSES_CFLAGS], [preprocessor flags for Curses, e.g. -I/usr/include/ncursesw])
+    AC_ARG_WITH([ncurses], [AS_HELP_STRING([--with-ncurses],
+        [force the use of Ncurses or NcursesW])],
+        [], [with_ncurses=check])
+    AC_ARG_WITH([ncursesw], [AS_HELP_STRING([--without-ncursesw],
+        [do not use NcursesW (wide character support)])],
+        [], [with_ncursesw=check])
+
+    ax_saved_LIBS=$LIBS
+    ax_saved_CPPFLAGS=$CPPFLAGS
+
+    AS_IF([test "x$with_ncurses" = xyes || test "x$with_ncursesw" = xyes],
+        [ax_with_plaincurses=no], [ax_with_plaincurses=check])
+
+    ax_cv_curses_which=no
+
+    # Test for NcursesW
+    AS_IF([test "x$CURSES_LIBS" = x && test "x$with_ncursesw" != xno], [
+        _FIND_CURSES_FLAGS([ncursesw])
+
+        AS_IF([test "x$ax_cv_ncursesw" = xno && test "x$with_ncursesw" = xyes], [
+            AC_MSG_ERROR([--with-ncursesw specified but could not find NcursesW library])
+        ])
+
+        AS_IF([test "x$ax_cv_ncursesw" = xyes], [
+            ax_cv_curses=yes
+            ax_cv_curses_which=ncursesw
+            CURSES_LIBS="$pkg_cv__ax_cv_ncursesw_libs"
+            CURSES_CFLAGS="$pkg_cv__ax_cv_ncursesw_cppflags"
+            AC_DEFINE([HAVE_NCURSESW], [1], [Define to 1 if the NcursesW library is present])
+            AC_DEFINE([HAVE_CURSES],   [1], [Define to 1 if a SysV or X/Open compatible Curses library is present])
+
+            AC_CACHE_CHECK([for working ncursesw/curses.h], [ax_cv_header_ncursesw_curses_h], [
+                AC_LINK_IFELSE([AC_LANG_PROGRAM([[
+                        @%:@define _XOPEN_SOURCE_EXTENDED 1
+                        @%:@include <ncursesw/curses.h>
+                    ]], [[
+                        chtype a = A_BOLD;
+                        int b = KEY_LEFT;
+                        chtype c = COLOR_PAIR(1) & A_COLOR;
+                        attr_t d = WA_NORMAL;
+                        cchar_t e;
+                        wint_t f;
+                        int g = getattrs(stdscr);
+                        int h = getcurx(stdscr) + getmaxx(stdscr);
+                        initscr();
+                        init_pair(1, COLOR_WHITE, COLOR_RED);
+                        wattr_set(stdscr, d, 0, NULL);
+                        wget_wch(stdscr, &f);
+                    ]])],
+                    [ax_cv_header_ncursesw_curses_h=yes],
+                    [ax_cv_header_ncursesw_curses_h=no])
+            ])
+            AS_IF([test "x$ax_cv_header_ncursesw_curses_h" = xyes], [
+                ax_cv_curses_enhanced=yes
+                ax_cv_curses_color=yes
+                ax_cv_curses_obsolete=yes
+                AC_DEFINE([HAVE_CURSES_ENHANCED],   [1], [Define to 1 if library supports X/Open Enhanced functions])
+                AC_DEFINE([HAVE_CURSES_COLOR],      [1], [Define to 1 if library supports color (enhanced functions)])
+                AC_DEFINE([HAVE_CURSES_OBSOLETE],   [1], [Define to 1 if library supports certain obsolete features])
+                AC_DEFINE([HAVE_NCURSESW_CURSES_H], [1], [Define to 1 if <ncursesw/curses.h> is present])
+            ])
+
+            AC_CACHE_CHECK([for working ncursesw.h], [ax_cv_header_ncursesw_h], [
+                AC_LINK_IFELSE([AC_LANG_PROGRAM([[
+                        @%:@define _XOPEN_SOURCE_EXTENDED 1
+                        @%:@include <ncursesw.h>
+                    ]], [[
+                        chtype a = A_BOLD;
+                        int b = KEY_LEFT;
+                        chtype c = COLOR_PAIR(1) & A_COLOR;
+                        attr_t d = WA_NORMAL;
+                        cchar_t e;
+                        wint_t f;
+                        int g = getattrs(stdscr);
+                        int h = getcurx(stdscr) + getmaxx(stdscr);
+                        initscr();
+                        init_pair(1, COLOR_WHITE, COLOR_RED);
+                        wattr_set(stdscr, d, 0, NULL);
+                        wget_wch(stdscr, &f);
+                    ]])],
+                    [ax_cv_header_ncursesw_h=yes],
+                    [ax_cv_header_ncursesw_h=no])
+            ])
+            AS_IF([test "x$ax_cv_header_ncursesw_h" = xyes], [
+                ax_cv_curses_enhanced=yes
+                ax_cv_curses_color=yes
+                ax_cv_curses_obsolete=yes
+                AC_DEFINE([HAVE_CURSES_ENHANCED], [1], [Define to 1 if library supports X/Open Enhanced functions])
+                AC_DEFINE([HAVE_CURSES_COLOR],    [1], [Define to 1 if library supports color (enhanced functions)])
+                AC_DEFINE([HAVE_CURSES_OBSOLETE], [1], [Define to 1 if library supports certain obsolete features])
+                AC_DEFINE([HAVE_NCURSESW_H],      [1], [Define to 1 if <ncursesw.h> is present])
+            ])
+
+            AC_CACHE_CHECK([for working ncurses.h], [ax_cv_header_ncurses_h_with_ncursesw], [
+                AC_LINK_IFELSE([AC_LANG_PROGRAM([[
+                        @%:@define _XOPEN_SOURCE_EXTENDED 1
+                        @%:@include <ncurses.h>
+                    ]], [[
+                        chtype a = A_BOLD;
+                        int b = KEY_LEFT;
+                        chtype c = COLOR_PAIR(1) & A_COLOR;
+                        attr_t d = WA_NORMAL;
+                        cchar_t e;
+                        wint_t f;
+                        int g = getattrs(stdscr);
+                        int h = getcurx(stdscr) + getmaxx(stdscr);
+                        initscr();
+                        init_pair(1, COLOR_WHITE, COLOR_RED);
+                        wattr_set(stdscr, d, 0, NULL);
+                        wget_wch(stdscr, &f);
+                    ]])],
+                    [ax_cv_header_ncurses_h_with_ncursesw=yes],
+                    [ax_cv_header_ncurses_h_with_ncursesw=no])
+            ])
+            AS_IF([test "x$ax_cv_header_ncurses_h_with_ncursesw" = xyes], [
+                ax_cv_curses_enhanced=yes
+                ax_cv_curses_color=yes
+                ax_cv_curses_obsolete=yes
+                AC_DEFINE([HAVE_CURSES_ENHANCED], [1], [Define to 1 if library supports X/Open Enhanced functions])
+                AC_DEFINE([HAVE_CURSES_COLOR],    [1], [Define to 1 if library supports color (enhanced functions)])
+                AC_DEFINE([HAVE_CURSES_OBSOLETE], [1], [Define to 1 if library supports certain obsolete features])
+                AC_DEFINE([HAVE_NCURSES_H],       [1], [Define to 1 if <ncurses.h> is present])
+            ])
+
+            AS_IF([test "x$ax_cv_header_ncursesw_curses_h" = xno && test "x$ax_cv_header_ncursesw_h" = xno && test "x$ax_cv_header_ncurses_h_with_ncursesw" = xno], [
+                AC_MSG_WARN([could not find a working ncursesw/curses.h, ncursesw.h or ncurses.h])
+            ])
+        ])
+    ])
+    unset pkg_cv__ax_cv_ncursesw_libs
+    unset pkg_cv__ax_cv_ncursesw_cppflags
+
+    # Test for Ncurses
+    AS_IF([test "x$CURSES_LIBS" = x && test "x$with_ncurses" != xno && test "x$ax_cv_curses_which" = xno], [
+        _FIND_CURSES_FLAGS([ncurses])
+
+        AS_IF([test "x$ax_cv_ncurses" = xno && test "x$with_ncurses" = xyes], [
+            AC_MSG_ERROR([--with-ncurses specified but could not find Ncurses library])
+        ])
+
+        AS_IF([test "x$ax_cv_ncurses" = xyes], [
+            ax_cv_curses=yes
+            ax_cv_curses_which=ncurses
+            CURSES_LIBS="$pkg_cv__ax_cv_ncurses_libs"
+            CURSES_CFLAGS="$pkg_cv__ax_cv_ncurses_cppflags"
+            AC_DEFINE([HAVE_NCURSES], [1], [Define to 1 if the Ncurses library is present])
+            AC_DEFINE([HAVE_CURSES],  [1], [Define to 1 if a SysV or X/Open compatible Curses library is present])
+
+            AC_CACHE_CHECK([for working ncurses/curses.h], [ax_cv_header_ncurses_curses_h], [
+                AC_LINK_IFELSE([AC_LANG_PROGRAM([[
+                        @%:@include <ncurses/curses.h>
+                    ]], [[
+                        chtype a = A_BOLD;
+                        int b = KEY_LEFT;
+                        chtype c = COLOR_PAIR(1) & A_COLOR;
+                        int g = getattrs(stdscr);
+                        int h = getcurx(stdscr) + getmaxx(stdscr);
+                        initscr();
+                        init_pair(1, COLOR_WHITE, COLOR_RED);
+                    ]])],
+                    [ax_cv_header_ncurses_curses_h=yes],
+                    [ax_cv_header_ncurses_curses_h=no])
+            ])
+            AS_IF([test "x$ax_cv_header_ncurses_curses_h" = xyes], [
+                ax_cv_curses_color=yes
+                ax_cv_curses_obsolete=yes
+                AC_DEFINE([HAVE_CURSES_COLOR],     [1], [Define to 1 if library supports color (enhanced functions)])
+                AC_DEFINE([HAVE_CURSES_OBSOLETE],  [1], [Define to 1 if library supports certain obsolete features])
+                AC_DEFINE([HAVE_NCURSES_CURSES_H], [1], [Define to 1 if <ncurses/curses.h> is present])
+            ])
+
+            AC_CACHE_CHECK([for working ncurses.h], [ax_cv_header_ncurses_h], [
+                AC_LINK_IFELSE([AC_LANG_PROGRAM([[
+                        @%:@include <ncurses.h>
+                    ]], [[
+                        chtype a = A_BOLD;
+                        int b = KEY_LEFT;
+                        chtype c = COLOR_PAIR(1) & A_COLOR;
+                        int g = getattrs(stdscr);
+                        int h = getcurx(stdscr) + getmaxx(stdscr);
+                        initscr();
+                        init_pair(1, COLOR_WHITE, COLOR_RED);
+                    ]])],
+                    [ax_cv_header_ncurses_h=yes],
+                    [ax_cv_header_ncurses_h=no])
+            ])
+            AS_IF([test "x$ax_cv_header_ncurses_h" = xyes], [
+                ax_cv_curses_color=yes
+                ax_cv_curses_obsolete=yes
+                AC_DEFINE([HAVE_CURSES_COLOR],    [1], [Define to 1 if library supports color (enhanced functions)])
+                AC_DEFINE([HAVE_CURSES_OBSOLETE], [1], [Define to 1 if library supports certain obsolete features])
+                AC_DEFINE([HAVE_NCURSES_H],       [1], [Define to 1 if <ncurses.h> is present])
+            ])
+
+            AS_IF([test "x$ax_cv_header_ncurses_curses_h" = xno && test "x$ax_cv_header_ncurses_h" = xno], [
+                AC_MSG_WARN([could not find a working ncurses/curses.h or ncurses.h])
+            ])
+        ])
+    ])
+    unset pkg_cv__ax_cv_ncurses_libs
+    unset pkg_cv__ax_cv_ncurses_cppflags
+
+    # Test for plain Curses (or if CURSES_LIBS was set by user)
+    AS_IF([test "x$with_plaincurses" != xno && test "x$ax_cv_curses_which" = xno], [
+        AS_IF([test "x$CURSES_LIBS" != x], [
+            LIBS="$ax_saved_LIBS $CURSES_LIBS"
+        ], [
+            LIBS="$ax_saved_LIBS -lcurses"
+        ])
+
+        AC_CACHE_CHECK([for Curses library], [ax_cv_plaincurses], [
+            AC_LINK_IFELSE([AC_LANG_CALL([], [initscr])],
+                [ax_cv_plaincurses=yes], [ax_cv_plaincurses=no])
+        ])
+
+        AS_IF([test "x$ax_cv_plaincurses" = xyes], [
+            ax_cv_curses=yes
+            ax_cv_curses_which=plaincurses
+            AS_IF([test "x$CURSES_LIBS" = x], [
+                CURSES_LIBS="-lcurses"
+            ])
+            AC_DEFINE([HAVE_CURSES], [1], [Define to 1 if a SysV or X/Open compatible Curses library is present])
+
+            # Check for base conformance (and header file)
+
+            AC_CACHE_CHECK([for working curses.h], [ax_cv_header_curses_h], [
+                AC_LINK_IFELSE([AC_LANG_PROGRAM([[
+                        @%:@include <curses.h>
+                    ]], [[
+                        chtype a = A_BOLD;
+                        int b = KEY_LEFT;
+                        initscr();
+                    ]])],
+                    [ax_cv_header_curses_h=yes],
+                    [ax_cv_header_curses_h=no])
+            ])
+            AS_IF([test "x$ax_cv_header_curses_h" = xyes], [
+                AC_DEFINE([HAVE_CURSES_H], [1], [Define to 1 if <curses.h> is present])
+
+                # Check for X/Open Enhanced conformance
+
+                AC_CACHE_CHECK([for X/Open Enhanced Curses conformance], [ax_cv_plaincurses_enhanced], [
+                    AC_LINK_IFELSE([AC_LANG_PROGRAM([[
+                            @%:@define _XOPEN_SOURCE_EXTENDED 1
+                            @%:@include <curses.h>
+                            @%:@ifndef _XOPEN_CURSES
+                            @%:@error "this Curses library is not enhanced"
+                            "this Curses library is not enhanced"
+                            @%:@endif
+                        ]], [[
+                            chtype a = A_BOLD;
+                            int b = KEY_LEFT;
+                            chtype c = COLOR_PAIR(1) & A_COLOR;
+                            attr_t d = WA_NORMAL;
+                            cchar_t e;
+                            wint_t f;
+                            initscr();
+                            init_pair(1, COLOR_WHITE, COLOR_RED);
+                            wattr_set(stdscr, d, 0, NULL);
+                            wget_wch(stdscr, &f);
+                        ]])],
+                        [ax_cv_plaincurses_enhanced=yes],
+                        [ax_cv_plaincurses_enhanced=no])
+                ])
+                AS_IF([test "x$ax_cv_plaincurses_enhanced" = xyes], [
+                    ax_cv_curses_enhanced=yes
+                    ax_cv_curses_color=yes
+                    AC_DEFINE([HAVE_CURSES_ENHANCED], [1], [Define to 1 if library supports X/Open Enhanced functions])
+                    AC_DEFINE([HAVE_CURSES_COLOR],    [1], [Define to 1 if library supports color (enhanced functions)])
+                ])
+
+                # Check for color functions
+
+                AC_CACHE_CHECK([for Curses color functions], [ax_cv_plaincurses_color], [
+                    AC_LINK_IFELSE([AC_LANG_PROGRAM([[
+                        @%:@define _XOPEN_SOURCE_EXTENDED 1
+                        @%:@include <curses.h>
+                        ]], [[
+                            chtype a = A_BOLD;
+                            int b = KEY_LEFT;
+                            chtype c = COLOR_PAIR(1) & A_COLOR;
+                            initscr();
+                            init_pair(1, COLOR_WHITE, COLOR_RED);
+                        ]])],
+                        [ax_cv_plaincurses_color=yes],
+                        [ax_cv_plaincurses_color=no])
+                ])
+                AS_IF([test "x$ax_cv_plaincurses_color" = xyes], [
+                    ax_cv_curses_color=yes
+                    AC_DEFINE([HAVE_CURSES_COLOR], [1], [Define to 1 if library supports color (enhanced functions)])
+                ])
+
+                # Check for obsolete functions
+
+                AC_CACHE_CHECK([for obsolete Curses functions], [ax_cv_plaincurses_obsolete], [
+                AC_LINK_IFELSE([AC_LANG_PROGRAM([[
+                        @%:@include <curses.h>
+                    ]], [[
+                        chtype a = A_BOLD;
+                        int b = KEY_LEFT;
+                        int g = getattrs(stdscr);
+                        int h = getcurx(stdscr) + getmaxx(stdscr);
+                        initscr();
+                    ]])],
+                    [ax_cv_plaincurses_obsolete=yes],
+                    [ax_cv_plaincurses_obsolete=no])
+                ])
+                AS_IF([test "x$ax_cv_plaincurses_obsolete" = xyes], [
+                    ax_cv_curses_obsolete=yes
+                    AC_DEFINE([HAVE_CURSES_OBSOLETE], [1], [Define to 1 if library supports certain obsolete features])
+                ])
+            ])
+
+            AS_IF([test "x$ax_cv_header_curses_h" = xno], [
+                AC_MSG_WARN([could not find a working curses.h])
+            ])
+        ])
+    ])
+
+    AS_IF([test "x$ax_cv_curses"          != xyes], [ax_cv_curses=no])
+    AS_IF([test "x$ax_cv_curses_enhanced" != xyes], [ax_cv_curses_enhanced=no])
+    AS_IF([test "x$ax_cv_curses_color"    != xyes], [ax_cv_curses_color=no])
+    AS_IF([test "x$ax_cv_curses_obsolete" != xyes], [ax_cv_curses_obsolete=no])
+
+    LIBS=$ax_saved_LIBS
+    CPPFLAGS=$ax_saved_CPPFLAGS
+
+    unset ax_saved_LIBS
+    unset ax_saved_CPPFLAGS
+])dnl
diff --git a/m4/ax_with_curses_extra.m4 b/m4/ax_with_curses_extra.m4
new file mode 100644
index 0000000..7056d68
--- /dev/null
+++ b/m4/ax_with_curses_extra.m4
@@ -0,0 +1,245 @@
+# ===========================================================================
+#   https://www.gnu.org/software/autoconf-archive/ax_with_curses_extra.html
+# ===========================================================================
+#
+# SYNOPSIS
+#
+#   AX_WITH_CURSES_PANEL
+#   AX_WITH_CURSES_MENU
+#   AX_WITH_CURSES_FORM
+#
+# DESCRIPTION
+#
+#   These macros try to find additional libraries that often come with
+#   SysV-compatible Curses.  In particular, the Panel, Menu and Form
+#   libraries are searched, along with their header files.  These macros
+#   depend on AX_WITH_CURSES.
+#
+#   The following preprocessor symbols may be defined by these macros:
+#
+#     By AX_WITH_CURSES_PANEL:
+#
+#     HAVE_PANEL              - if the Panel library is present
+#     HAVE_PANEL_H            - if <panel.h> is present and should be used
+#     HAVE_NCURSES_PANEL_H    - if <ncurses/panel.h> should be used
+#     HAVE_NCURSESW_PANEL_H   - if <ncursesw/panel.h> should be used
+#
+#     By AX_WITH_CURSES_MENU:
+#
+#     HAVE_MENU               - if the Menu library is present
+#     HAVE_MENU_H             - if <menu.h> is present and should be used
+#     HAVE_NCURSES_MENU_H     - if <ncurses/menu.h> should be used
+#     HAVE_NCURSESW_MENU_H    - if <ncursesw/menu.h> should be used
+#
+#     By AX_WITH_CURSES_FORM:
+#
+#     HAVE_FORM               - if the Form library is present
+#     HAVE_FORM_H             - if <form.h> is present and should be used
+#     HAVE_NCURSES_FORM_H     - if <ncurses/form.h> should be used
+#     HAVE_NCURSESW_FORM_H    - if <ncursesw/form.h> should be used
+#
+#   The following output variables may be defined by these macros; these are
+#   precious and may be overridden on the ./configure command line:
+#
+#     PANEL_LIBS   - library to add to xxx_LDADD before CURSES_LIBS
+#     MENU_LIBS    - library to add to xxx_LDADD before CURSES_LIBS
+#     FORM_LIBS    - library to add to xxx_LDADD before CURSES_LIBS
+#
+#   In previous versions of this macro, the flags PANEL_LIB, MENU_LIB and
+#   FORM_LIB were defined. These have been renamed, in keeping with the
+#   variable scheme of PKG_CHECK_MODULES, which should eventually supersede
+#   the use of AX_WITH_CURSES and AX_WITH_CURSES_* macros. These libraries
+#   are NOT added to LIBS by default.  You need to add them to the
+#   appropriate xxx_LDADD line in your Makefile.am in front of the
+#   equivalent CURSES_LIBS incantation.  For example:
+#
+#     prog_LDADD = @PANEL_LIBS@ @CURSES_LIBS@
+#
+#   If one of the xxx_LIBS variables is set on the configure command line
+#   (such as by running "./configure PANEL_LIBS=-lmypanel"), then the header
+#   file searched must NOT contain a subpath.  In this case, in other words,
+#   only <panel.h> would be searched for.  The user may use the CPPFLAGS
+#   precious variable to override the standard #include search path.
+#
+#   The following shell variables may be defined by these macros:
+#
+#     ax_cv_panel   - set to "yes" if Panels library is present
+#     ax_cv_menu    - set to "yes" if Menu library is present
+#     ax_cv_form    - set to "yes" if Form library is present
+#
+#   These variables can be used in your configure.ac to determine whether a
+#   library you require is actually present.  For example:
+#
+#     AX_WITH_CURSES
+#     if test "x$ax_cv_curses" != xyes; then
+#         AC_MSG_ERROR([requires a SysV or X/Open-compatible Curses library])
+#     fi
+#     AX_WITH_CURSES_PANEL
+#     if test "x$ax_cv_panel" != xyes; then
+#         AC_MSG_ERROR([requires the Curses Panel library])
+#     fi
+#
+#   To use the HAVE_xxx_H preprocessor symbols, insert the following into
+#   your system.h (or equivalent) header file:
+#
+#     For AX_WITH_CURSES_PANEL:
+#
+#     #if defined HAVE_NCURSESW_PANEL_H
+#     #  include <ncursesw/panel.h>
+#     #elif defined HAVE_NCURSES_PANEL_H
+#     #  include <ncurses/panel.h>
+#     #elif defined HAVE_PANEL_H
+#     #  include <panel.h>
+#     #else
+#     #  error "SysV-compatible Curses Panel header file required"
+#     #endif
+#
+#     For AX_WITH_CURSES_MENU:
+#
+#     #if defined HAVE_NCURSESW_MENU_H
+#     #  include <ncursesw/menu.h>
+#     #elif defined HAVE_NCURSES_MENU_H
+#     #  include <ncurses/menu.h>
+#     #elif defined HAVE_MENU_H
+#     #  include <menu.h>
+#     #else
+#     #  error "SysV-compatible Curses Menu header file required"
+#     #endif
+#
+#     For AX_WITH_CURSES_FORM:
+#
+#     #if defined HAVE_NCURSESW_FORM_H
+#     #  include <ncursesw/form.h>
+#     #elif defined HAVE_NCURSES_FORM_H
+#     #  include <ncurses/form.h>
+#     #elif defined HAVE_FORM_H
+#     #  include <form.h>
+#     #else
+#     #  error "SysV-compatible Curses Form header file required"
+#     #endif
+#
+# LICENSE
+#
+#   Copyright (c) 2011 John Zaitseff <J.Zaitseff@zap.org.au>
+#
+#   This program is free software: you can redistribute it and/or modify it
+#   under the terms of the GNU General Public License as published by the
+#   Free Software Foundation, either version 3 of the License, or (at your
+#   option) any later version.
+#
+#   This program is distributed in the hope that it will be useful, but
+#   WITHOUT ANY WARRANTY; without even the implied warranty of
+#   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
+#   Public License for more details.
+#
+#   You should have received a copy of the GNU General Public License along
+#   with this program. If not, see <https://www.gnu.org/licenses/>.
+#
+#   As a special exception, the respective Autoconf Macro's copyright owner
+#   gives unlimited permission to copy, distribute and modify the configure
+#   scripts that are the output of Autoconf when processing the Macro. You
+#   need not follow the terms of the GNU General Public License when using
+#   or distributing such scripts, even though portions of the text of the
+#   Macro appear in them. The GNU General Public License (GPL) does govern
+#   all other use of the material that constitutes the Autoconf Macro.
+#
+#   This special exception to the GPL applies to versions of the Autoconf
+#   Macro released by the Autoconf Archive. When you make and distribute a
+#   modified version of the Autoconf Macro, you may extend this special
+#   exception to the GPL to apply to your modified version as well.
+
+#serial 5
+
+AC_DEFUN([_AX_WITH_CURSES_CHECKEXTRA], [
+    dnl Parameter 1 is the variable name component, using uppercase letters only
+    dnl Parameter 2 is the printable library name
+    dnl Parameter 3 is the C code to try compiling and linking
+    dnl Parameter 4 is the header filename
+    dnl Parameter 5 is the library command line
+
+    AS_VAR_PUSHDEF([_AX_WITH_CURSES_CHECKEXTRA_have_var],        [HAVE_$1])dnl
+    AS_VAR_PUSHDEF([_AX_WITH_CURSES_CHECKEXTRA_cv_var],          [ax_cv_[]m4_tolower($1)])dnl
+    AS_VAR_PUSHDEF([_AX_WITH_CURSES_CHECKEXTRA_header_var],      [ax_cv_header_$4])dnl
+    AS_VAR_PUSHDEF([_AX_WITH_CURSES_CHECKEXTRA_have_header_var], [HAVE_[]m4_toupper($4)])dnl
+
+    ax_saved_LIBS=$LIBS
+    ax_saved_CPPFLAGS=$CPPFLAGS
+
+    AC_CACHE_CHECK([for Curses $2 library with $4], [_AX_WITH_CURSES_CHECKEXTRA_header_var], [
+        LIBS="$ax_saved_LIBS $5 $CURSES_LIBS"
+        CPPFLAGS="$ax_saved_CPPFLAGS $CURSES_CFLAGS"
+        AC_LINK_IFELSE([AC_LANG_PROGRAM([[
+                @%:@include <$4>
+            ]], [$3])],
+            [_AX_WITH_CURSES_CHECKEXTRA_header_var=yes],
+            [_AX_WITH_CURSES_CHECKEXTRA_header_var=no])
+    ])
+    AS_IF([test "x$[]_AX_WITH_CURSES_CHECKEXTRA_header_var" = xyes], [
+        _AX_WITH_CURSES_CHECKEXTRA_cv_var=yes
+        AS_LITERAL_IF([$5], [$1_LIBS="$5"])
+        AC_DEFINE([_AX_WITH_CURSES_CHECKEXTRA_have_var],        [1], [Define to 1 if the Curses $2 library is present])
+        AC_DEFINE([_AX_WITH_CURSES_CHECKEXTRA_have_header_var], [1], [Define to 1 if <$4> is present])
+    ], [
+        AS_IF([test "x$[]_AX_WITH_CURSES_CHECKEXTRA_cv_var" = xyes], [],
+            [_AX_WITH_CURSES_CHECKEXTRA_cv_var=no])
+    ])
+
+    LIBS=$ax_saved_LIBS
+    CPPFLAGS=$ax_saved_CPPFLAGS
+    unset ax_saved_LIBS
+    unset ax_saved_CPPFLAGS
+
+    AS_VAR_POPDEF([_AX_WITH_CURSES_CHECKEXTRA_have_header_var])dnl
+    AS_VAR_POPDEF([_AX_WITH_CURSES_CHECKEXTRA_header_var])dnl
+    AS_VAR_POPDEF([_AX_WITH_CURSES_CHECKEXTRA_cv_var])dnl
+    AS_VAR_POPDEF([_AX_WITH_CURSES_CHECKEXTRA_have_var])dnl
+])dnl
+
+AC_DEFUN([_AX_WITH_CURSES_EXTRA], [
+    dnl Parameter 1 is the variable name component, using uppercase letters only
+    dnl Parameter 2 is the printable library name
+    dnl Parameter 3 is the C code to try compiling and linking
+    dnl Parameter 4 is the header filename component
+    dnl Parameter 5 is the NCursesW library command line
+    dnl Parameter 6 is the NCurses library command line
+    dnl Parameter 7 is the plain Curses library command line
+
+    AC_REQUIRE([AX_WITH_CURSES])
+    AC_ARG_VAR([$1_LIBS], [linker library for Curses $2, e.g. $7])
+
+    AS_IF([test "x$[]$1_LIBS" != x], [
+        _AX_WITH_CURSES_CHECKEXTRA([$1], [$2], [$3], [$4], [$[]$1_LIBS])
+    ], [
+        AS_IF([test "x$ax_cv_curses_which" = xncursesw], [
+            _AX_WITH_CURSES_CHECKEXTRA([$1], [$2], [$3], [ncursesw/$4], [$5])
+        ], [test "x$ax_cv_curses_which" = xncurses], [
+            _AX_WITH_CURSES_CHECKEXTRA([$1], [$2], [$3], [$4], [$6])
+            AS_IF([test x$[]ax_cv_[]m4_tolower($1) != "xyes"], [
+                _AX_WITH_CURSES_CHECKEXTRA([$1], [$2], [$3], [ncurses/$4], [$6])
+            ])
+        ], [test "x$ax_cv_curses_which" = xplaincurses], [
+            _AX_WITH_CURSES_CHECKEXTRA([$1], [$2], [$3], [$4], [$7])
+        ])
+    ])
+])dnl
+
+AC_DEFUN([AX_WITH_CURSES_PANEL], [
+    _AX_WITH_CURSES_EXTRA([PANEL], [Panel], [[
+            WINDOW *win = newwin(0, 0, 0, 0);
+            PANEL *pan = new_panel(win);
+        ]], [panel.h], [-lpanelw], [-lpanel], [-lpanel])
+])dnl
+
+AC_DEFUN([AX_WITH_CURSES_MENU], [
+    _AX_WITH_CURSES_EXTRA([MENU], [Menu], [[
+            ITEM **mi;
+            MENU *m = new_menu(mi);
+        ]], [menu.h], [-lmenuw], [-lmenu], [-lmenu])
+])dnl
+
+AC_DEFUN([AX_WITH_CURSES_FORM], [
+    _AX_WITH_CURSES_EXTRA([FORM], [Form], [[
+            FIELD **ff;
+            FORM *f = new_form(ff);
+        ]], [form.h], [-lformw], [-lform], [-lform])
+])dnl
diff --git a/m4/ctng_cpu_count.m4 b/m4/ctng_cpu_count.m4
new file mode 100644
index 0000000..c10ae8b
--- /dev/null
+++ b/m4/ctng_cpu_count.m4
@@ -0,0 +1,10 @@
+# Find out how to count CPUs
+AC_DEFUN([CTNG_CPU_COUNT],
+    [AC_CACHE_CHECK([whether to use getconf or sysctl to count CPUs],
+        [ctng_cv_cpu_count],
+        [getconf _NPROCESSORS_ONLN >/dev/null 2>&1 && \
+             ctng_cv_cpu_count="getconf _NPROCESSORS_ONLN"
+         sysctl -n hw.ncpu >/dev/null 2>&1 && \
+             ctng_cv_cpu_count="sysctl -n hw.ncpu"])
+     AC_SUBST(CPU_COUNT, "$ctng_cv_cpu_count")
+    ])
diff --git a/m4/ctng_prog.m4 b/m4/ctng_prog.m4
new file mode 100644
index 0000000..ebbe333
--- /dev/null
+++ b/m4/ctng_prog.m4
@@ -0,0 +1,36 @@
+# Several convenience wrappers for checking the programs
+
+# Check for required tool
+AC_DEFUN([CTNG_CHECK_TOOL_REQ],
+    [AC_CHECK_TOOLS([$1], [$2])
+     AS_IF(
+        [test -z "$$1"],
+        [AC_MSG_ERROR([missing required tool: $2])])
+    ])
+
+# Check for required tool, set variable to full pathname
+AC_DEFUN([CTNG_PATH_TOOL_REQ],
+    [AC_ARG_VAR([$1], [Specify the full path to GNU $3])
+     CTNG_CHECK_TOOL_REQ([$1], [$2])
+     AS_CASE(
+        [$$1],
+        [/*],,
+        [?*],[AC_MSG_CHECKING([for absolute path to $$1])
+              $1=$(which $$1)
+              AC_MSG_RESULT([$$1])])])
+
+# Check for required program
+AC_DEFUN([CTNG_CHECK_PROGS_REQ],
+    [AC_CHECK_PROGS([$1], [$2])
+     AS_IF(
+        [test -z "$$1"],
+        [AC_MSG_ERROR([missing required tool: $2])])
+    ])
+
+# Check for path to required program
+AC_DEFUN([CTNG_PATH_PROGS_REQ],
+    [AC_PATH_PROGS([$1], [$2])
+     AS_IF(
+        [test -z "$$1"],
+        [AC_MSG_ERROR([missing required tool: $2])])
+   ])
diff --git a/m4/ctng_prog_install.m4 b/m4/ctng_prog_install.m4
new file mode 100644
index 0000000..61cd358
--- /dev/null
+++ b/m4/ctng_prog_install.m4
@@ -0,0 +1,26 @@
+# Additional checks for install(1)
+
+# Check if install(1) supports --strip-program=...
+AC_DEFUN(
+    [CTNG_INSTALL_STRIP_PROGRAM],
+    [AC_CACHE_CHECK([whether install takes --strip-program option],
+        [ctng_cv_install_with_strip_program],
+        [touch conftest
+         mkdir conftest.dir
+         AS_IF([$INSTALL --strip-program=true -s conftest conftest.dir/conftest 2>/dev/null],
+            [ctng_cv_install_with_strip_program=yes],
+            [ctng_cv_install_with_strip_program=no])
+         rm -rf conftest.dir
+         rm -f conftest
+        ])
+     AS_IF([test "$ctng_cv_install_with_strip_program" = yes], [$1], [$2])
+    ])
+     
+AC_DEFUN([CTNG_PROG_INSTALL],
+    [CTNG_WITH_DEPRECATED([install], [INSTALL])
+     AC_ARG_VAR([INSTALL], [Specify the full path to a BSD-compatible install])
+     AC_PROG_INSTALL
+     CTNG_INSTALL_STRIP_PROGRAM(
+        [CTNG_SET_KCONFIG_OPTION([install_with_strip_program], [y])],
+        [CTNG_SET_KCONFIG_OPTION([install_with_strip_program])])
+    ])
diff --git a/m4/ctng_prog_stat.m4 b/m4/ctng_prog_stat.m4
new file mode 100644
index 0000000..6bee076
--- /dev/null
+++ b/m4/ctng_prog_stat.m4
@@ -0,0 +1,31 @@
+# Check that stat(1) is present and determine the syntax for the format
+# string (BSD or GNU). Defines ac_cv_stat_flavor to either GNU or BSD;
+# and evaluates either IF-GNU or IF-BSD expression.
+#   CTNG_PROG_STAT([IF-GNU], [IF-BSD])
+AC_DEFUN([CTNG_PROG_STAT_FORMAT],
+    [AC_CACHE_CHECK([whether stat takes GNU or BSD format],
+         [ctng_cv_stat_flavor],
+         [touch conftest
+          chmod 642 conftest
+          attr_bsd=$(stat -f '%Lp' conftest 2>/dev/null)
+          attr_gnu=$(stat -c '%a' conftest 2>/dev/null)
+          rm -f conftest
+          AS_IF([test "$attr_bsd" = "642"],
+              [ctng_cv_stat_flavor=BSD],
+              [test "$attr_gnu" = "642"],
+              [ctng_cv_stat_flavor=GNU],
+              [ctng_cv_stat_flavor=unknown])])
+     AS_IF([test "$ctng_cv_stat_flavor" = "GNU" ], [$1],
+        [test "$ctng_cv_stat_flavor" = "BSD" ], [$2],
+        [AC_MSG_ERROR([cannot determine stat(1) format option])])
+    ])
+
+AC_DEFUN([CTNG_PROG_STAT],
+    [AX_REQUIRE_DEFINED([CTNG_CHECK_PROGS_REQ])
+     CTNG_CHECK_PROGS_REQ([stat], [stat])
+     CTNG_PROG_STAT_FORMAT(
+        [CTNG_SET_KCONFIG_OPTION([stat_flavor_GNU], [y])
+         CTNG_SET_KCONFIG_OPTION([stat_flavor_BSD])],
+        [CTNG_SET_KCONFIG_OPTION([stat_flavor_BSD], [y])
+         CTNG_SET_KCONFIG_OPTION([stat_flavor_GNU])])
+    ])
diff --git a/m4/ctng_set_kconfig_option.m4 b/m4/ctng_set_kconfig_option.m4
new file mode 100644
index 0000000..2c2968c
--- /dev/null
+++ b/m4/ctng_set_kconfig_option.m4
@@ -0,0 +1,7 @@
+# Set the kconfig option.
+AC_DEFUN([CTNG_SET_KCONFIG_OPTION],
+    [AS_IF(
+         [test -n "$$1" -o "$2" = "y"],
+         [AC_SUBST([KCONFIG_$1], ["def_bool y"])],
+         [AC_SUBST([KCONFIG_$1], ["bool"])])
+    ])
diff --git a/m4/ctng_version_check.m4 b/m4/ctng_version_check.m4
new file mode 100644
index 0000000..703661b
--- /dev/null
+++ b/m4/ctng_version_check.m4
@@ -0,0 +1,47 @@
+# Check if a given program is available with a particular version.
+#   CTNG_PROG_VERSION(VAR, HELP, PROG, SRCH, VERSION_CHECK[, CONFIG_OPT])
+# Search for PROG under possible names of SRCH. Allow user overrides in variable
+# VAR; display HELP message. Try to find a version that satisfies VERSION_CHECK
+# regexp; if that is achieved, set CONFIG_OPT in the kconfig. Otherwise, settle
+# for any version found.
+# Sets ctng_version_VAR_ok to ':' if the version met the criterion, or false otherwise.
+AC_DEFUN([CTNG_PROG_VERSION],
+    [AS_IF([test -z "$EGREP"],
+         [AC_MSG_ERROR([This macro can only be used after checking for EGREP])])
+     CTNG_WITH_DEPRECATED([$3], [$1])
+     AC_ARG_VAR([$1], [Specify the full path to $2])
+     ctng_version_$1_ok=false
+     AC_CACHE_CHECK([for $3], [ac_cv_path_$1],
+         [AC_PATH_PROGS_FEATURE_CHECK([$1], [$4],
+              [[ver=$($ac_path_$1 --version 2>/dev/null| $EGREP $5)
+                test -z "$ac_cv_path_$1" && ac_cv_path_$1=$ac_path_$1
+                test -n "$ver" && ac_cv_path_$1="$ac_path_$1" ac_path_$1_found=: ctng_version_$1_ok=:]])])
+     AS_IF([test -n "$$1"],
+         [[ver=$($ac_cv_path_$1 --version 2>/dev/null| $EGREP $5)
+           test -n "$ver" && ctng_version_$1_ok=:]])
+     AC_MSG_CHECKING([for $2])
+     AS_IF([$ctng_version_$1_ok],
+         [AC_MSG_RESULT([yes])],
+         [AC_MSG_RESULT([no])])
+     AC_SUBST([$1], [$ac_cv_path_$1])
+     AS_IF([test -n "$6"],
+         [AS_IF([$ctng_version_$1_ok], [$6=y], [$6=])
+          CTNG_SET_KCONFIG_OPTION([$6])])
+    ])
+
+# Same as above, but make it a fatal error if the tool is not found at all
+# (i.e. "require any version, prefer version X or newer")
+AC_DEFUN([CTNG_PROG_VERSION_REQ_ANY],
+    [CTNG_PROG_VERSION([$1], [$2], [$3], [$4], [$5], [$6])
+     AS_IF([test -z "$$1"],
+         [AC_MSG_ERROR([Required tool not found: $3])])
+    ])
+
+# Same, but also require the version check to pass
+# (i.e. "require version X or newer")
+AC_DEFUN([CTNG_PROG_VERSION_REQ_STRICT],
+    [CTNG_PROG_VERSION([$1], [$2], [$3], [$4], [$5], [$6])
+     AS_IF([test -z "$$1" || ! $ctng_version_$1_ok],
+         [AC_MSG_ERROR([Required tool not found: $2])])
+    ])
+
diff --git a/m4/ctng_with_deprecated.m4 b/m4/ctng_with_deprecated.m4
new file mode 100644
index 0000000..976bc3f
--- /dev/null
+++ b/m4/ctng_with_deprecated.m4
@@ -0,0 +1,10 @@
+# FIXME retire after 1.24
+#
+# CTNG_WITH_DEPRECATED(PROG, VAR)
+#   Declare a deprecated --with option: instead of --with-PROG=xxx, must use VAR=xxx
+AC_DEFUN([CTNG_WITH_DEPRECATED],
+    [AC_ARG_WITH([$1],
+                 [AS_HELP_STRING([--with-$1=PATH],
+                                 [Deprecated; use $2=PATH instead])],
+                 [AC_MSG_ERROR([--with-$1=$withval deprecated; use $2=$withval instead])])
+    ])
diff --git a/m4/gettext.m4 b/m4/gettext.m4
new file mode 100644
index 0000000..eef5073
--- /dev/null
+++ b/m4/gettext.m4
@@ -0,0 +1,420 @@
+# gettext.m4 serial 68 (gettext-0.19.8)
+dnl Copyright (C) 1995-2014, 2016 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+dnl
+dnl This file can be used in projects which are not available under
+dnl the GNU General Public License or the GNU Library General Public
+dnl License but which still want to provide support for the GNU gettext
+dnl functionality.
+dnl Please note that the actual code of the GNU gettext library is covered
+dnl by the GNU Library General Public License, and the rest of the GNU
+dnl gettext package is covered by the GNU General Public License.
+dnl They are *not* in the public domain.
+
+dnl Authors:
+dnl   Ulrich Drepper <drepper@cygnus.com>, 1995-2000.
+dnl   Bruno Haible <haible@clisp.cons.org>, 2000-2006, 2008-2010.
+
+dnl Macro to add for using GNU gettext.
+
+dnl Usage: AM_GNU_GETTEXT([INTLSYMBOL], [NEEDSYMBOL], [INTLDIR]).
+dnl INTLSYMBOL can be one of 'external', 'no-libtool', 'use-libtool'. The
+dnl    default (if it is not specified or empty) is 'no-libtool'.
+dnl    INTLSYMBOL should be 'external' for packages with no intl directory,
+dnl    and 'no-libtool' or 'use-libtool' for packages with an intl directory.
+dnl    If INTLSYMBOL is 'use-libtool', then a libtool library
+dnl    $(top_builddir)/intl/libintl.la will be created (shared and/or static,
+dnl    depending on --{enable,disable}-{shared,static} and on the presence of
+dnl    AM-DISABLE-SHARED). If INTLSYMBOL is 'no-libtool', a static library
+dnl    $(top_builddir)/intl/libintl.a will be created.
+dnl If NEEDSYMBOL is specified and is 'need-ngettext', then GNU gettext
+dnl    implementations (in libc or libintl) without the ngettext() function
+dnl    will be ignored.  If NEEDSYMBOL is specified and is
+dnl    'need-formatstring-macros', then GNU gettext implementations that don't
+dnl    support the ISO C 99 <inttypes.h> formatstring macros will be ignored.
+dnl INTLDIR is used to find the intl libraries.  If empty,
+dnl    the value '$(top_builddir)/intl/' is used.
+dnl
+dnl The result of the configuration is one of three cases:
+dnl 1) GNU gettext, as included in the intl subdirectory, will be compiled
+dnl    and used.
+dnl    Catalog format: GNU --> install in $(datadir)
+dnl    Catalog extension: .mo after installation, .gmo in source tree
+dnl 2) GNU gettext has been found in the system's C library.
+dnl    Catalog format: GNU --> install in $(datadir)
+dnl    Catalog extension: .mo after installation, .gmo in source tree
+dnl 3) No internationalization, always use English msgid.
+dnl    Catalog format: none
+dnl    Catalog extension: none
+dnl If INTLSYMBOL is 'external', only cases 2 and 3 can occur.
+dnl The use of .gmo is historical (it was needed to avoid overwriting the
+dnl GNU format catalogs when building on a platform with an X/Open gettext),
+dnl but we keep it in order not to force irrelevant filename changes on the
+dnl maintainers.
+dnl
+AC_DEFUN([AM_GNU_GETTEXT],
+[
+  dnl Argument checking.
+  ifelse([$1], [], , [ifelse([$1], [external], , [ifelse([$1], [no-libtool], , [ifelse([$1], [use-libtool], ,
+    [errprint([ERROR: invalid first argument to AM_GNU_GETTEXT
+])])])])])
+  ifelse(ifelse([$1], [], [old])[]ifelse([$1], [no-libtool], [old]), [old],
+    [AC_DIAGNOSE([obsolete], [Use of AM_GNU_GETTEXT without [external] argument is deprecated.])])
+  ifelse([$2], [], , [ifelse([$2], [need-ngettext], , [ifelse([$2], [need-formatstring-macros], ,
+    [errprint([ERROR: invalid second argument to AM_GNU_GETTEXT
+])])])])
+  define([gt_included_intl],
+    ifelse([$1], [external],
+      ifdef([AM_GNU_GETTEXT_][INTL_SUBDIR], [yes], [no]),
+      [yes]))
+  define([gt_libtool_suffix_prefix], ifelse([$1], [use-libtool], [l], []))
+  gt_NEEDS_INIT
+  AM_GNU_GETTEXT_NEED([$2])
+
+  AC_REQUIRE([AM_PO_SUBDIRS])dnl
+  ifelse(gt_included_intl, yes, [
+    AC_REQUIRE([AM_INTL_SUBDIR])dnl
+  ])
+
+  dnl Prerequisites of AC_LIB_LINKFLAGS_BODY.
+  AC_REQUIRE([AC_LIB_PREPARE_PREFIX])
+  AC_REQUIRE([AC_LIB_RPATH])
+
+  dnl Sometimes libintl requires libiconv, so first search for libiconv.
+  dnl Ideally we would do this search only after the
+  dnl      if test "$USE_NLS" = "yes"; then
+  dnl        if { eval "gt_val=\$$gt_func_gnugettext_libc"; test "$gt_val" != "yes"; }; then
+  dnl tests. But if configure.in invokes AM_ICONV after AM_GNU_GETTEXT
+  dnl the configure script would need to contain the same shell code
+  dnl again, outside any 'if'. There are two solutions:
+  dnl - Invoke AM_ICONV_LINKFLAGS_BODY here, outside any 'if'.
+  dnl - Control the expansions in more detail using AC_PROVIDE_IFELSE.
+  dnl Since AC_PROVIDE_IFELSE is only in autoconf >= 2.52 and not
+  dnl documented, we avoid it.
+  ifelse(gt_included_intl, yes, , [
+    AC_REQUIRE([AM_ICONV_LINKFLAGS_BODY])
+  ])
+
+  dnl Sometimes, on Mac OS X, libintl requires linking with CoreFoundation.
+  gt_INTL_MACOSX
+
+  dnl Set USE_NLS.
+  AC_REQUIRE([AM_NLS])
+
+  ifelse(gt_included_intl, yes, [
+    BUILD_INCLUDED_LIBINTL=no
+    USE_INCLUDED_LIBINTL=no
+  ])
+  LIBINTL=
+  LTLIBINTL=
+  POSUB=
+
+  dnl Add a version number to the cache macros.
+  case " $gt_needs " in
+    *" need-formatstring-macros "*) gt_api_version=3 ;;
+    *" need-ngettext "*) gt_api_version=2 ;;
+    *) gt_api_version=1 ;;
+  esac
+  gt_func_gnugettext_libc="gt_cv_func_gnugettext${gt_api_version}_libc"
+  gt_func_gnugettext_libintl="gt_cv_func_gnugettext${gt_api_version}_libintl"
+
+  dnl If we use NLS figure out what method
+  if test "$USE_NLS" = "yes"; then
+    gt_use_preinstalled_gnugettext=no
+    ifelse(gt_included_intl, yes, [
+      AC_MSG_CHECKING([whether included gettext is requested])
+      AC_ARG_WITH([included-gettext],
+        [  --with-included-gettext use the GNU gettext library included here],
+        nls_cv_force_use_gnu_gettext=$withval,
+        nls_cv_force_use_gnu_gettext=no)
+      AC_MSG_RESULT([$nls_cv_force_use_gnu_gettext])
+
+      nls_cv_use_gnu_gettext="$nls_cv_force_use_gnu_gettext"
+      if test "$nls_cv_force_use_gnu_gettext" != "yes"; then
+    ])
+        dnl User does not insist on using GNU NLS library.  Figure out what
+        dnl to use.  If GNU gettext is available we use this.  Else we have
+        dnl to fall back to GNU NLS library.
+
+        if test $gt_api_version -ge 3; then
+          gt_revision_test_code='
+#ifndef __GNU_GETTEXT_SUPPORTED_REVISION
+#define __GNU_GETTEXT_SUPPORTED_REVISION(major) ((major) == 0 ? 0 : -1)
+#endif
+changequote(,)dnl
+typedef int array [2 * (__GNU_GETTEXT_SUPPORTED_REVISION(0) >= 1) - 1];
+changequote([,])dnl
+'
+        else
+          gt_revision_test_code=
+        fi
+        if test $gt_api_version -ge 2; then
+          gt_expression_test_code=' + * ngettext ("", "", 0)'
+        else
+          gt_expression_test_code=
+        fi
+
+        AC_CACHE_CHECK([for GNU gettext in libc], [$gt_func_gnugettext_libc],
+         [AC_LINK_IFELSE(
+            [AC_LANG_PROGRAM(
+               [[
+#include <libintl.h>
+#ifndef __GNU_GETTEXT_SUPPORTED_REVISION
+extern int _nl_msg_cat_cntr;
+extern int *_nl_domain_bindings;
+#define __GNU_GETTEXT_SYMBOL_EXPRESSION (_nl_msg_cat_cntr + *_nl_domain_bindings)
+#else
+#define __GNU_GETTEXT_SYMBOL_EXPRESSION 0
+#endif
+$gt_revision_test_code
+               ]],
+               [[
+bindtextdomain ("", "");
+return * gettext ("")$gt_expression_test_code + __GNU_GETTEXT_SYMBOL_EXPRESSION
+               ]])],
+            [eval "$gt_func_gnugettext_libc=yes"],
+            [eval "$gt_func_gnugettext_libc=no"])])
+
+        if { eval "gt_val=\$$gt_func_gnugettext_libc"; test "$gt_val" != "yes"; }; then
+          dnl Sometimes libintl requires libiconv, so first search for libiconv.
+          ifelse(gt_included_intl, yes, , [
+            AM_ICONV_LINK
+          ])
+          dnl Search for libintl and define LIBINTL, LTLIBINTL and INCINTL
+          dnl accordingly. Don't use AC_LIB_LINKFLAGS_BODY([intl],[iconv])
+          dnl because that would add "-liconv" to LIBINTL and LTLIBINTL
+          dnl even if libiconv doesn't exist.
+          AC_LIB_LINKFLAGS_BODY([intl])
+          AC_CACHE_CHECK([for GNU gettext in libintl],
+            [$gt_func_gnugettext_libintl],
+           [gt_save_CPPFLAGS="$CPPFLAGS"
+            CPPFLAGS="$CPPFLAGS $INCINTL"
+            gt_save_LIBS="$LIBS"
+            LIBS="$LIBS $LIBINTL"
+            dnl Now see whether libintl exists and does not depend on libiconv.
+            AC_LINK_IFELSE(
+              [AC_LANG_PROGRAM(
+                 [[
+#include <libintl.h>
+#ifndef __GNU_GETTEXT_SUPPORTED_REVISION
+extern int _nl_msg_cat_cntr;
+extern
+#ifdef __cplusplus
+"C"
+#endif
+const char *_nl_expand_alias (const char *);
+#define __GNU_GETTEXT_SYMBOL_EXPRESSION (_nl_msg_cat_cntr + *_nl_expand_alias (""))
+#else
+#define __GNU_GETTEXT_SYMBOL_EXPRESSION 0
+#endif
+$gt_revision_test_code
+                 ]],
+                 [[
+bindtextdomain ("", "");
+return * gettext ("")$gt_expression_test_code + __GNU_GETTEXT_SYMBOL_EXPRESSION
+                 ]])],
+              [eval "$gt_func_gnugettext_libintl=yes"],
+              [eval "$gt_func_gnugettext_libintl=no"])
+            dnl Now see whether libintl exists and depends on libiconv.
+            if { eval "gt_val=\$$gt_func_gnugettext_libintl"; test "$gt_val" != yes; } && test -n "$LIBICONV"; then
+              LIBS="$LIBS $LIBICONV"
+              AC_LINK_IFELSE(
+                [AC_LANG_PROGRAM(
+                   [[
+#include <libintl.h>
+#ifndef __GNU_GETTEXT_SUPPORTED_REVISION
+extern int _nl_msg_cat_cntr;
+extern
+#ifdef __cplusplus
+"C"
+#endif
+const char *_nl_expand_alias (const char *);
+#define __GNU_GETTEXT_SYMBOL_EXPRESSION (_nl_msg_cat_cntr + *_nl_expand_alias (""))
+#else
+#define __GNU_GETTEXT_SYMBOL_EXPRESSION 0
+#endif
+$gt_revision_test_code
+                   ]],
+                   [[
+bindtextdomain ("", "");
+return * gettext ("")$gt_expression_test_code + __GNU_GETTEXT_SYMBOL_EXPRESSION
+                   ]])],
+                [LIBINTL="$LIBINTL $LIBICONV"
+                 LTLIBINTL="$LTLIBINTL $LTLIBICONV"
+                 eval "$gt_func_gnugettext_libintl=yes"
+                ])
+            fi
+            CPPFLAGS="$gt_save_CPPFLAGS"
+            LIBS="$gt_save_LIBS"])
+        fi
+
+        dnl If an already present or preinstalled GNU gettext() is found,
+        dnl use it.  But if this macro is used in GNU gettext, and GNU
+        dnl gettext is already preinstalled in libintl, we update this
+        dnl libintl.  (Cf. the install rule in intl/Makefile.in.)
+        if { eval "gt_val=\$$gt_func_gnugettext_libc"; test "$gt_val" = "yes"; } \
+           || { { eval "gt_val=\$$gt_func_gnugettext_libintl"; test "$gt_val" = "yes"; } \
+                && test "$PACKAGE" != gettext-runtime \
+                && test "$PACKAGE" != gettext-tools; }; then
+          gt_use_preinstalled_gnugettext=yes
+        else
+          dnl Reset the values set by searching for libintl.
+          LIBINTL=
+          LTLIBINTL=
+          INCINTL=
+        fi
+
+    ifelse(gt_included_intl, yes, [
+        if test "$gt_use_preinstalled_gnugettext" != "yes"; then
+          dnl GNU gettext is not found in the C library.
+          dnl Fall back on included GNU gettext library.
+          nls_cv_use_gnu_gettext=yes
+        fi
+      fi
+
+      if test "$nls_cv_use_gnu_gettext" = "yes"; then
+        dnl Mark actions used to generate GNU NLS library.
+        BUILD_INCLUDED_LIBINTL=yes
+        USE_INCLUDED_LIBINTL=yes
+        LIBINTL="ifelse([$3],[],\${top_builddir}/intl,[$3])/libintl.[]gt_libtool_suffix_prefix[]a $LIBICONV $LIBTHREAD"
+        LTLIBINTL="ifelse([$3],[],\${top_builddir}/intl,[$3])/libintl.[]gt_libtool_suffix_prefix[]a $LTLIBICONV $LTLIBTHREAD"
+        LIBS=`echo " $LIBS " | sed -e 's/ -lintl / /' -e 's/^ //' -e 's/ $//'`
+      fi
+
+      CATOBJEXT=
+      if test "$gt_use_preinstalled_gnugettext" = "yes" \
+         || test "$nls_cv_use_gnu_gettext" = "yes"; then
+        dnl Mark actions to use GNU gettext tools.
+        CATOBJEXT=.gmo
+      fi
+    ])
+
+    if test -n "$INTL_MACOSX_LIBS"; then
+      if test "$gt_use_preinstalled_gnugettext" = "yes" \
+         || test "$nls_cv_use_gnu_gettext" = "yes"; then
+        dnl Some extra flags are needed during linking.
+        LIBINTL="$LIBINTL $INTL_MACOSX_LIBS"
+        LTLIBINTL="$LTLIBINTL $INTL_MACOSX_LIBS"
+      fi
+    fi
+
+    if test "$gt_use_preinstalled_gnugettext" = "yes" \
+       || test "$nls_cv_use_gnu_gettext" = "yes"; then
+      AC_DEFINE([ENABLE_NLS], [1],
+        [Define to 1 if translation of program messages to the user's native language
+   is requested.])
+    else
+      USE_NLS=no
+    fi
+  fi
+
+  AC_MSG_CHECKING([whether to use NLS])
+  AC_MSG_RESULT([$USE_NLS])
+  if test "$USE_NLS" = "yes"; then
+    AC_MSG_CHECKING([where the gettext function comes from])
+    if test "$gt_use_preinstalled_gnugettext" = "yes"; then
+      if { eval "gt_val=\$$gt_func_gnugettext_libintl"; test "$gt_val" = "yes"; }; then
+        gt_source="external libintl"
+      else
+        gt_source="libc"
+      fi
+    else
+      gt_source="included intl directory"
+    fi
+    AC_MSG_RESULT([$gt_source])
+  fi
+
+  if test "$USE_NLS" = "yes"; then
+
+    if test "$gt_use_preinstalled_gnugettext" = "yes"; then
+      if { eval "gt_val=\$$gt_func_gnugettext_libintl"; test "$gt_val" = "yes"; }; then
+        AC_MSG_CHECKING([how to link with libintl])
+        AC_MSG_RESULT([$LIBINTL])
+        AC_LIB_APPENDTOVAR([CPPFLAGS], [$INCINTL])
+      fi
+
+      dnl For backward compatibility. Some packages may be using this.
+      AC_DEFINE([HAVE_GETTEXT], [1],
+       [Define if the GNU gettext() function is already present or preinstalled.])
+      AC_DEFINE([HAVE_DCGETTEXT], [1],
+       [Define if the GNU dcgettext() function is already present or preinstalled.])
+    fi
+
+    dnl We need to process the po/ directory.
+    POSUB=po
+  fi
+
+  ifelse(gt_included_intl, yes, [
+    dnl If this is used in GNU gettext we have to set BUILD_INCLUDED_LIBINTL
+    dnl to 'yes' because some of the testsuite requires it.
+    if test "$PACKAGE" = gettext-runtime || test "$PACKAGE" = gettext-tools; then
+      BUILD_INCLUDED_LIBINTL=yes
+    fi
+
+    dnl Make all variables we use known to autoconf.
+    AC_SUBST([BUILD_INCLUDED_LIBINTL])
+    AC_SUBST([USE_INCLUDED_LIBINTL])
+    AC_SUBST([CATOBJEXT])
+
+    dnl For backward compatibility. Some configure.ins may be using this.
+    nls_cv_header_intl=
+    nls_cv_header_libgt=
+
+    dnl For backward compatibility. Some Makefiles may be using this.
+    DATADIRNAME=share
+    AC_SUBST([DATADIRNAME])
+
+    dnl For backward compatibility. Some Makefiles may be using this.
+    INSTOBJEXT=.mo
+    AC_SUBST([INSTOBJEXT])
+
+    dnl For backward compatibility. Some Makefiles may be using this.
+    GENCAT=gencat
+    AC_SUBST([GENCAT])
+
+    dnl For backward compatibility. Some Makefiles may be using this.
+    INTLOBJS=
+    if test "$USE_INCLUDED_LIBINTL" = yes; then
+      INTLOBJS="\$(GETTOBJS)"
+    fi
+    AC_SUBST([INTLOBJS])
+
+    dnl Enable libtool support if the surrounding package wishes it.
+    INTL_LIBTOOL_SUFFIX_PREFIX=gt_libtool_suffix_prefix
+    AC_SUBST([INTL_LIBTOOL_SUFFIX_PREFIX])
+  ])
+
+  dnl For backward compatibility. Some Makefiles may be using this.
+  INTLLIBS="$LIBINTL"
+  AC_SUBST([INTLLIBS])
+
+  dnl Make all documented variables known to autoconf.
+  AC_SUBST([LIBINTL])
+  AC_SUBST([LTLIBINTL])
+  AC_SUBST([POSUB])
+])
+
+
+dnl gt_NEEDS_INIT ensures that the gt_needs variable is initialized.
+m4_define([gt_NEEDS_INIT],
+[
+  m4_divert_text([DEFAULTS], [gt_needs=])
+  m4_define([gt_NEEDS_INIT], [])
+])
+
+
+dnl Usage: AM_GNU_GETTEXT_NEED([NEEDSYMBOL])
+AC_DEFUN([AM_GNU_GETTEXT_NEED],
+[
+  m4_divert_text([INIT_PREPARE], [gt_needs="$gt_needs $1"])
+])
+
+
+dnl Usage: AM_GNU_GETTEXT_VERSION([gettext-version])
+AC_DEFUN([AM_GNU_GETTEXT_VERSION], [])
+
+
+dnl Usage: AM_GNU_GETTEXT_REQUIRE_VERSION([gettext-version])
+AC_DEFUN([AM_GNU_GETTEXT_REQUIRE_VERSION], [])
diff --git a/m4/iconv.m4 b/m4/iconv.m4
new file mode 100644
index 0000000..aa159c5
--- /dev/null
+++ b/m4/iconv.m4
@@ -0,0 +1,271 @@
+# iconv.m4 serial 19 (gettext-0.18.2)
+dnl Copyright (C) 2000-2002, 2007-2014, 2016 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+dnl From Bruno Haible.
+
+AC_DEFUN([AM_ICONV_LINKFLAGS_BODY],
+[
+  dnl Prerequisites of AC_LIB_LINKFLAGS_BODY.
+  AC_REQUIRE([AC_LIB_PREPARE_PREFIX])
+  AC_REQUIRE([AC_LIB_RPATH])
+
+  dnl Search for libiconv and define LIBICONV, LTLIBICONV and INCICONV
+  dnl accordingly.
+  AC_LIB_LINKFLAGS_BODY([iconv])
+])
+
+AC_DEFUN([AM_ICONV_LINK],
+[
+  dnl Some systems have iconv in libc, some have it in libiconv (OSF/1 and
+  dnl those with the standalone portable GNU libiconv installed).
+  AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles
+
+  dnl Search for libiconv and define LIBICONV, LTLIBICONV and INCICONV
+  dnl accordingly.
+  AC_REQUIRE([AM_ICONV_LINKFLAGS_BODY])
+
+  dnl Add $INCICONV to CPPFLAGS before performing the following checks,
+  dnl because if the user has installed libiconv and not disabled its use
+  dnl via --without-libiconv-prefix, he wants to use it. The first
+  dnl AC_LINK_IFELSE will then fail, the second AC_LINK_IFELSE will succeed.
+  am_save_CPPFLAGS="$CPPFLAGS"
+  AC_LIB_APPENDTOVAR([CPPFLAGS], [$INCICONV])
+
+  AC_CACHE_CHECK([for iconv], [am_cv_func_iconv], [
+    am_cv_func_iconv="no, consider installing GNU libiconv"
+    am_cv_lib_iconv=no
+    AC_LINK_IFELSE(
+      [AC_LANG_PROGRAM(
+         [[
+#include <stdlib.h>
+#include <iconv.h>
+         ]],
+         [[iconv_t cd = iconv_open("","");
+           iconv(cd,NULL,NULL,NULL,NULL);
+           iconv_close(cd);]])],
+      [am_cv_func_iconv=yes])
+    if test "$am_cv_func_iconv" != yes; then
+      am_save_LIBS="$LIBS"
+      LIBS="$LIBS $LIBICONV"
+      AC_LINK_IFELSE(
+        [AC_LANG_PROGRAM(
+           [[
+#include <stdlib.h>
+#include <iconv.h>
+           ]],
+           [[iconv_t cd = iconv_open("","");
+             iconv(cd,NULL,NULL,NULL,NULL);
+             iconv_close(cd);]])],
+        [am_cv_lib_iconv=yes]
+        [am_cv_func_iconv=yes])
+      LIBS="$am_save_LIBS"
+    fi
+  ])
+  if test "$am_cv_func_iconv" = yes; then
+    AC_CACHE_CHECK([for working iconv], [am_cv_func_iconv_works], [
+      dnl This tests against bugs in AIX 5.1, AIX 6.1..7.1, HP-UX 11.11,
+      dnl Solaris 10.
+      am_save_LIBS="$LIBS"
+      if test $am_cv_lib_iconv = yes; then
+        LIBS="$LIBS $LIBICONV"
+      fi
+      am_cv_func_iconv_works=no
+      for ac_iconv_const in '' 'const'; do
+        AC_RUN_IFELSE(
+          [AC_LANG_PROGRAM(
+             [[
+#include <iconv.h>
+#include <string.h>
+
+#ifndef ICONV_CONST
+# define ICONV_CONST $ac_iconv_const
+#endif
+             ]],
+             [[int result = 0;
+  /* Test against AIX 5.1 bug: Failures are not distinguishable from successful
+     returns.  */
+  {
+    iconv_t cd_utf8_to_88591 = iconv_open ("ISO8859-1", "UTF-8");
+    if (cd_utf8_to_88591 != (iconv_t)(-1))
+      {
+        static ICONV_CONST char input[] = "\342\202\254"; /* EURO SIGN */
+        char buf[10];
+        ICONV_CONST char *inptr = input;
+        size_t inbytesleft = strlen (input);
+        char *outptr = buf;
+        size_t outbytesleft = sizeof (buf);
+        size_t res = iconv (cd_utf8_to_88591,
+                            &inptr, &inbytesleft,
+                            &outptr, &outbytesleft);
+        if (res == 0)
+          result |= 1;
+        iconv_close (cd_utf8_to_88591);
+      }
+  }
+  /* Test against Solaris 10 bug: Failures are not distinguishable from
+     successful returns.  */
+  {
+    iconv_t cd_ascii_to_88591 = iconv_open ("ISO8859-1", "646");
+    if (cd_ascii_to_88591 != (iconv_t)(-1))
+      {
+        static ICONV_CONST char input[] = "\263";
+        char buf[10];
+        ICONV_CONST char *inptr = input;
+        size_t inbytesleft = strlen (input);
+        char *outptr = buf;
+        size_t outbytesleft = sizeof (buf);
+        size_t res = iconv (cd_ascii_to_88591,
+                            &inptr, &inbytesleft,
+                            &outptr, &outbytesleft);
+        if (res == 0)
+          result |= 2;
+        iconv_close (cd_ascii_to_88591);
+      }
+  }
+  /* Test against AIX 6.1..7.1 bug: Buffer overrun.  */
+  {
+    iconv_t cd_88591_to_utf8 = iconv_open ("UTF-8", "ISO-8859-1");
+    if (cd_88591_to_utf8 != (iconv_t)(-1))
+      {
+        static ICONV_CONST char input[] = "\304";
+        static char buf[2] = { (char)0xDE, (char)0xAD };
+        ICONV_CONST char *inptr = input;
+        size_t inbytesleft = 1;
+        char *outptr = buf;
+        size_t outbytesleft = 1;
+        size_t res = iconv (cd_88591_to_utf8,
+                            &inptr, &inbytesleft,
+                            &outptr, &outbytesleft);
+        if (res != (size_t)(-1) || outptr - buf > 1 || buf[1] != (char)0xAD)
+          result |= 4;
+        iconv_close (cd_88591_to_utf8);
+      }
+  }
+#if 0 /* This bug could be worked around by the caller.  */
+  /* Test against HP-UX 11.11 bug: Positive return value instead of 0.  */
+  {
+    iconv_t cd_88591_to_utf8 = iconv_open ("utf8", "iso88591");
+    if (cd_88591_to_utf8 != (iconv_t)(-1))
+      {
+        static ICONV_CONST char input[] = "\304rger mit b\366sen B\374bchen ohne Augenma\337";
+        char buf[50];
+        ICONV_CONST char *inptr = input;
+        size_t inbytesleft = strlen (input);
+        char *outptr = buf;
+        size_t outbytesleft = sizeof (buf);
+        size_t res = iconv (cd_88591_to_utf8,
+                            &inptr, &inbytesleft,
+                            &outptr, &outbytesleft);
+        if ((int)res > 0)
+          result |= 8;
+        iconv_close (cd_88591_to_utf8);
+      }
+  }
+#endif
+  /* Test against HP-UX 11.11 bug: No converter from EUC-JP to UTF-8 is
+     provided.  */
+  if (/* Try standardized names.  */
+      iconv_open ("UTF-8", "EUC-JP") == (iconv_t)(-1)
+      /* Try IRIX, OSF/1 names.  */
+      && iconv_open ("UTF-8", "eucJP") == (iconv_t)(-1)
+      /* Try AIX names.  */
+      && iconv_open ("UTF-8", "IBM-eucJP") == (iconv_t)(-1)
+      /* Try HP-UX names.  */
+      && iconv_open ("utf8", "eucJP") == (iconv_t)(-1))
+    result |= 16;
+  return result;
+]])],
+          [am_cv_func_iconv_works=yes], ,
+          [case "$host_os" in
+             aix* | hpux*) am_cv_func_iconv_works="guessing no" ;;
+             *)            am_cv_func_iconv_works="guessing yes" ;;
+           esac])
+        test "$am_cv_func_iconv_works" = no || break
+      done
+      LIBS="$am_save_LIBS"
+    ])
+    case "$am_cv_func_iconv_works" in
+      *no) am_func_iconv=no am_cv_lib_iconv=no ;;
+      *)   am_func_iconv=yes ;;
+    esac
+  else
+    am_func_iconv=no am_cv_lib_iconv=no
+  fi
+  if test "$am_func_iconv" = yes; then
+    AC_DEFINE([HAVE_ICONV], [1],
+      [Define if you have the iconv() function and it works.])
+  fi
+  if test "$am_cv_lib_iconv" = yes; then
+    AC_MSG_CHECKING([how to link with libiconv])
+    AC_MSG_RESULT([$LIBICONV])
+  else
+    dnl If $LIBICONV didn't lead to a usable library, we don't need $INCICONV
+    dnl either.
+    CPPFLAGS="$am_save_CPPFLAGS"
+    LIBICONV=
+    LTLIBICONV=
+  fi
+  AC_SUBST([LIBICONV])
+  AC_SUBST([LTLIBICONV])
+])
+
+dnl Define AM_ICONV using AC_DEFUN_ONCE for Autoconf >= 2.64, in order to
+dnl avoid warnings like
+dnl "warning: AC_REQUIRE: `AM_ICONV' was expanded before it was required".
+dnl This is tricky because of the way 'aclocal' is implemented:
+dnl - It requires defining an auxiliary macro whose name ends in AC_DEFUN.
+dnl   Otherwise aclocal's initial scan pass would miss the macro definition.
+dnl - It requires a line break inside the AC_DEFUN_ONCE and AC_DEFUN expansions.
+dnl   Otherwise aclocal would emit many "Use of uninitialized value $1"
+dnl   warnings.
+m4_define([gl_iconv_AC_DEFUN],
+  m4_version_prereq([2.64],
+    [[AC_DEFUN_ONCE(
+        [$1], [$2])]],
+    [m4_ifdef([gl_00GNULIB],
+       [[AC_DEFUN_ONCE(
+           [$1], [$2])]],
+       [[AC_DEFUN(
+           [$1], [$2])]])]))
+gl_iconv_AC_DEFUN([AM_ICONV],
+[
+  AM_ICONV_LINK
+  if test "$am_cv_func_iconv" = yes; then
+    AC_MSG_CHECKING([for iconv declaration])
+    AC_CACHE_VAL([am_cv_proto_iconv], [
+      AC_COMPILE_IFELSE(
+        [AC_LANG_PROGRAM(
+           [[
+#include <stdlib.h>
+#include <iconv.h>
+extern
+#ifdef __cplusplus
+"C"
+#endif
+#if defined(__STDC__) || defined(_MSC_VER) || defined(__cplusplus)
+size_t iconv (iconv_t cd, char * *inbuf, size_t *inbytesleft, char * *outbuf, size_t *outbytesleft);
+#else
+size_t iconv();
+#endif
+           ]],
+           [[]])],
+        [am_cv_proto_iconv_arg1=""],
+        [am_cv_proto_iconv_arg1="const"])
+      am_cv_proto_iconv="extern size_t iconv (iconv_t cd, $am_cv_proto_iconv_arg1 char * *inbuf, size_t *inbytesleft, char * *outbuf, size_t *outbytesleft);"])
+    am_cv_proto_iconv=`echo "[$]am_cv_proto_iconv" | tr -s ' ' | sed -e 's/( /(/'`
+    AC_MSG_RESULT([
+         $am_cv_proto_iconv])
+    AC_DEFINE_UNQUOTED([ICONV_CONST], [$am_cv_proto_iconv_arg1],
+      [Define as const if the declaration of iconv() needs const.])
+    dnl Also substitute ICONV_CONST in the gnulib generated <iconv.h>.
+    m4_ifdef([gl_ICONV_H_DEFAULTS],
+      [AC_REQUIRE([gl_ICONV_H_DEFAULTS])
+       if test -n "$am_cv_proto_iconv_arg1"; then
+         ICONV_CONST="const"
+       fi
+      ])
+  fi
+])
diff --git a/m4/intlmacosx.m4 b/m4/intlmacosx.m4
new file mode 100644
index 0000000..aca924c
--- /dev/null
+++ b/m4/intlmacosx.m4
@@ -0,0 +1,56 @@
+# intlmacosx.m4 serial 5 (gettext-0.18.2)
+dnl Copyright (C) 2004-2014, 2016 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+dnl
+dnl This file can be used in projects which are not available under
+dnl the GNU General Public License or the GNU Library General Public
+dnl License but which still want to provide support for the GNU gettext
+dnl functionality.
+dnl Please note that the actual code of the GNU gettext library is covered
+dnl by the GNU Library General Public License, and the rest of the GNU
+dnl gettext package is covered by the GNU General Public License.
+dnl They are *not* in the public domain.
+
+dnl Checks for special options needed on Mac OS X.
+dnl Defines INTL_MACOSX_LIBS.
+AC_DEFUN([gt_INTL_MACOSX],
+[
+  dnl Check for API introduced in Mac OS X 10.2.
+  AC_CACHE_CHECK([for CFPreferencesCopyAppValue],
+    [gt_cv_func_CFPreferencesCopyAppValue],
+    [gt_save_LIBS="$LIBS"
+     LIBS="$LIBS -Wl,-framework -Wl,CoreFoundation"
+     AC_LINK_IFELSE(
+       [AC_LANG_PROGRAM(
+          [[#include <CoreFoundation/CFPreferences.h>]],
+          [[CFPreferencesCopyAppValue(NULL, NULL)]])],
+       [gt_cv_func_CFPreferencesCopyAppValue=yes],
+       [gt_cv_func_CFPreferencesCopyAppValue=no])
+     LIBS="$gt_save_LIBS"])
+  if test $gt_cv_func_CFPreferencesCopyAppValue = yes; then
+    AC_DEFINE([HAVE_CFPREFERENCESCOPYAPPVALUE], [1],
+      [Define to 1 if you have the Mac OS X function CFPreferencesCopyAppValue in the CoreFoundation framework.])
+  fi
+  dnl Check for API introduced in Mac OS X 10.3.
+  AC_CACHE_CHECK([for CFLocaleCopyCurrent], [gt_cv_func_CFLocaleCopyCurrent],
+    [gt_save_LIBS="$LIBS"
+     LIBS="$LIBS -Wl,-framework -Wl,CoreFoundation"
+     AC_LINK_IFELSE(
+       [AC_LANG_PROGRAM(
+          [[#include <CoreFoundation/CFLocale.h>]],
+          [[CFLocaleCopyCurrent();]])],
+       [gt_cv_func_CFLocaleCopyCurrent=yes],
+       [gt_cv_func_CFLocaleCopyCurrent=no])
+     LIBS="$gt_save_LIBS"])
+  if test $gt_cv_func_CFLocaleCopyCurrent = yes; then
+    AC_DEFINE([HAVE_CFLOCALECOPYCURRENT], [1],
+      [Define to 1 if you have the Mac OS X function CFLocaleCopyCurrent in the CoreFoundation framework.])
+  fi
+  INTL_MACOSX_LIBS=
+  if test $gt_cv_func_CFPreferencesCopyAppValue = yes || test $gt_cv_func_CFLocaleCopyCurrent = yes; then
+    INTL_MACOSX_LIBS="-Wl,-framework -Wl,CoreFoundation"
+  fi
+  AC_SUBST([INTL_MACOSX_LIBS])
+])
diff --git a/m4/lib-ld.m4 b/m4/lib-ld.m4
new file mode 100644
index 0000000..6209de6
--- /dev/null
+++ b/m4/lib-ld.m4
@@ -0,0 +1,119 @@
+# lib-ld.m4 serial 6
+dnl Copyright (C) 1996-2003, 2009-2016 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+dnl Subroutines of libtool.m4,
+dnl with replacements s/_*LT_PATH/AC_LIB_PROG/ and s/lt_/acl_/ to avoid
+dnl collision with libtool.m4.
+
+dnl From libtool-2.4. Sets the variable with_gnu_ld to yes or no.
+AC_DEFUN([AC_LIB_PROG_LD_GNU],
+[AC_CACHE_CHECK([if the linker ($LD) is GNU ld], [acl_cv_prog_gnu_ld],
+[# I'd rather use --version here, but apparently some GNU lds only accept -v.
+case `$LD -v 2>&1 </dev/null` in
+*GNU* | *'with BFD'*)
+  acl_cv_prog_gnu_ld=yes
+  ;;
+*)
+  acl_cv_prog_gnu_ld=no
+  ;;
+esac])
+with_gnu_ld=$acl_cv_prog_gnu_ld
+])
+
+dnl From libtool-2.4. Sets the variable LD.
+AC_DEFUN([AC_LIB_PROG_LD],
+[AC_REQUIRE([AC_PROG_CC])dnl
+AC_REQUIRE([AC_CANONICAL_HOST])dnl
+
+AC_ARG_WITH([gnu-ld],
+    [AS_HELP_STRING([--with-gnu-ld],
+        [assume the C compiler uses GNU ld [default=no]])],
+    [test "$withval" = no || with_gnu_ld=yes],
+    [with_gnu_ld=no])dnl
+
+# Prepare PATH_SEPARATOR.
+# The user is always right.
+if test "${PATH_SEPARATOR+set}" != set; then
+  # Determine PATH_SEPARATOR by trying to find /bin/sh in a PATH which
+  # contains only /bin. Note that ksh looks also at the FPATH variable,
+  # so we have to set that as well for the test.
+  PATH_SEPARATOR=:
+  (PATH='/bin;/bin'; FPATH=$PATH; sh -c :) >/dev/null 2>&1 \
+    && { (PATH='/bin:/bin'; FPATH=$PATH; sh -c :) >/dev/null 2>&1 \
+           || PATH_SEPARATOR=';'
+       }
+fi
+
+ac_prog=ld
+if test "$GCC" = yes; then
+  # Check if gcc -print-prog-name=ld gives a path.
+  AC_MSG_CHECKING([for ld used by $CC])
+  case $host in
+  *-*-mingw*)
+    # gcc leaves a trailing carriage return which upsets mingw
+    ac_prog=`($CC -print-prog-name=ld) 2>&5 | tr -d '\015'` ;;
+  *)
+    ac_prog=`($CC -print-prog-name=ld) 2>&5` ;;
+  esac
+  case $ac_prog in
+    # Accept absolute paths.
+    [[\\/]]* | ?:[[\\/]]*)
+      re_direlt='/[[^/]][[^/]]*/\.\./'
+      # Canonicalize the pathname of ld
+      ac_prog=`echo "$ac_prog"| sed 's%\\\\%/%g'`
+      while echo "$ac_prog" | grep "$re_direlt" > /dev/null 2>&1; do
+        ac_prog=`echo $ac_prog| sed "s%$re_direlt%/%"`
+      done
+      test -z "$LD" && LD="$ac_prog"
+      ;;
+  "")
+    # If it fails, then pretend we aren't using GCC.
+    ac_prog=ld
+    ;;
+  *)
+    # If it is relative, then search for the first ld in PATH.
+    with_gnu_ld=unknown
+    ;;
+  esac
+elif test "$with_gnu_ld" = yes; then
+  AC_MSG_CHECKING([for GNU ld])
+else
+  AC_MSG_CHECKING([for non-GNU ld])
+fi
+AC_CACHE_VAL([acl_cv_path_LD],
+[if test -z "$LD"; then
+  acl_save_ifs="$IFS"; IFS=$PATH_SEPARATOR
+  for ac_dir in $PATH; do
+    IFS="$acl_save_ifs"
+    test -z "$ac_dir" && ac_dir=.
+    if test -f "$ac_dir/$ac_prog" || test -f "$ac_dir/$ac_prog$ac_exeext"; then
+      acl_cv_path_LD="$ac_dir/$ac_prog"
+      # Check to see if the program is GNU ld.  I'd rather use --version,
+      # but apparently some variants of GNU ld only accept -v.
+      # Break only if it was the GNU/non-GNU ld that we prefer.
+      case `"$acl_cv_path_LD" -v 2>&1 </dev/null` in
+      *GNU* | *'with BFD'*)
+        test "$with_gnu_ld" != no && break
+        ;;
+      *)
+        test "$with_gnu_ld" != yes && break
+        ;;
+      esac
+    fi
+  done
+  IFS="$acl_save_ifs"
+else
+  acl_cv_path_LD="$LD" # Let the user override the test with a path.
+fi])
+LD="$acl_cv_path_LD"
+if test -n "$LD"; then
+  AC_MSG_RESULT([$LD])
+else
+  AC_MSG_RESULT([no])
+fi
+test -z "$LD" && AC_MSG_ERROR([no acceptable ld found in \$PATH])
+AC_LIB_PROG_LD_GNU
+])
diff --git a/m4/lib-link.m4 b/m4/lib-link.m4
new file mode 100644
index 0000000..2f51855
--- /dev/null
+++ b/m4/lib-link.m4
@@ -0,0 +1,777 @@
+# lib-link.m4 serial 26 (gettext-0.18.2)
+dnl Copyright (C) 2001-2016 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+dnl From Bruno Haible.
+
+AC_PREREQ([2.54])
+
+dnl AC_LIB_LINKFLAGS(name [, dependencies]) searches for libname and
+dnl the libraries corresponding to explicit and implicit dependencies.
+dnl Sets and AC_SUBSTs the LIB${NAME} and LTLIB${NAME} variables and
+dnl augments the CPPFLAGS variable.
+dnl Sets and AC_SUBSTs the LIB${NAME}_PREFIX variable to nonempty if libname
+dnl was found in ${LIB${NAME}_PREFIX}/$acl_libdirstem.
+AC_DEFUN([AC_LIB_LINKFLAGS],
+[
+  AC_REQUIRE([AC_LIB_PREPARE_PREFIX])
+  AC_REQUIRE([AC_LIB_RPATH])
+  pushdef([Name],[m4_translit([$1],[./+-], [____])])
+  pushdef([NAME],[m4_translit([$1],[abcdefghijklmnopqrstuvwxyz./+-],
+                                   [ABCDEFGHIJKLMNOPQRSTUVWXYZ____])])
+  AC_CACHE_CHECK([how to link with lib[]$1], [ac_cv_lib[]Name[]_libs], [
+    AC_LIB_LINKFLAGS_BODY([$1], [$2])
+    ac_cv_lib[]Name[]_libs="$LIB[]NAME"
+    ac_cv_lib[]Name[]_ltlibs="$LTLIB[]NAME"
+    ac_cv_lib[]Name[]_cppflags="$INC[]NAME"
+    ac_cv_lib[]Name[]_prefix="$LIB[]NAME[]_PREFIX"
+  ])
+  LIB[]NAME="$ac_cv_lib[]Name[]_libs"
+  LTLIB[]NAME="$ac_cv_lib[]Name[]_ltlibs"
+  INC[]NAME="$ac_cv_lib[]Name[]_cppflags"
+  LIB[]NAME[]_PREFIX="$ac_cv_lib[]Name[]_prefix"
+  AC_LIB_APPENDTOVAR([CPPFLAGS], [$INC]NAME)
+  AC_SUBST([LIB]NAME)
+  AC_SUBST([LTLIB]NAME)
+  AC_SUBST([LIB]NAME[_PREFIX])
+  dnl Also set HAVE_LIB[]NAME so that AC_LIB_HAVE_LINKFLAGS can reuse the
+  dnl results of this search when this library appears as a dependency.
+  HAVE_LIB[]NAME=yes
+  popdef([NAME])
+  popdef([Name])
+])
+
+dnl AC_LIB_HAVE_LINKFLAGS(name, dependencies, includes, testcode, [missing-message])
+dnl searches for libname and the libraries corresponding to explicit and
+dnl implicit dependencies, together with the specified include files and
+dnl the ability to compile and link the specified testcode. The missing-message
+dnl defaults to 'no' and may contain additional hints for the user.
+dnl If found, it sets and AC_SUBSTs HAVE_LIB${NAME}=yes and the LIB${NAME}
+dnl and LTLIB${NAME} variables and augments the CPPFLAGS variable, and
+dnl #defines HAVE_LIB${NAME} to 1. Otherwise, it sets and AC_SUBSTs
+dnl HAVE_LIB${NAME}=no and LIB${NAME} and LTLIB${NAME} to empty.
+dnl Sets and AC_SUBSTs the LIB${NAME}_PREFIX variable to nonempty if libname
+dnl was found in ${LIB${NAME}_PREFIX}/$acl_libdirstem.
+AC_DEFUN([AC_LIB_HAVE_LINKFLAGS],
+[
+  AC_REQUIRE([AC_LIB_PREPARE_PREFIX])
+  AC_REQUIRE([AC_LIB_RPATH])
+  pushdef([Name],[m4_translit([$1],[./+-], [____])])
+  pushdef([NAME],[m4_translit([$1],[abcdefghijklmnopqrstuvwxyz./+-],
+                                   [ABCDEFGHIJKLMNOPQRSTUVWXYZ____])])
+
+  dnl Search for lib[]Name and define LIB[]NAME, LTLIB[]NAME and INC[]NAME
+  dnl accordingly.
+  AC_LIB_LINKFLAGS_BODY([$1], [$2])
+
+  dnl Add $INC[]NAME to CPPFLAGS before performing the following checks,
+  dnl because if the user has installed lib[]Name and not disabled its use
+  dnl via --without-lib[]Name-prefix, he wants to use it.
+  ac_save_CPPFLAGS="$CPPFLAGS"
+  AC_LIB_APPENDTOVAR([CPPFLAGS], [$INC]NAME)
+
+  AC_CACHE_CHECK([for lib[]$1], [ac_cv_lib[]Name], [
+    ac_save_LIBS="$LIBS"
+    dnl If $LIB[]NAME contains some -l options, add it to the end of LIBS,
+    dnl because these -l options might require -L options that are present in
+    dnl LIBS. -l options benefit only from the -L options listed before it.
+    dnl Otherwise, add it to the front of LIBS, because it may be a static
+    dnl library that depends on another static library that is present in LIBS.
+    dnl Static libraries benefit only from the static libraries listed after
+    dnl it.
+    case " $LIB[]NAME" in
+      *" -l"*) LIBS="$LIBS $LIB[]NAME" ;;
+      *)       LIBS="$LIB[]NAME $LIBS" ;;
+    esac
+    AC_LINK_IFELSE(
+      [AC_LANG_PROGRAM([[$3]], [[$4]])],
+      [ac_cv_lib[]Name=yes],
+      [ac_cv_lib[]Name='m4_if([$5], [], [no], [[$5]])'])
+    LIBS="$ac_save_LIBS"
+  ])
+  if test "$ac_cv_lib[]Name" = yes; then
+    HAVE_LIB[]NAME=yes
+    AC_DEFINE([HAVE_LIB]NAME, 1, [Define if you have the lib][$1 library.])
+    AC_MSG_CHECKING([how to link with lib[]$1])
+    AC_MSG_RESULT([$LIB[]NAME])
+  else
+    HAVE_LIB[]NAME=no
+    dnl If $LIB[]NAME didn't lead to a usable library, we don't need
+    dnl $INC[]NAME either.
+    CPPFLAGS="$ac_save_CPPFLAGS"
+    LIB[]NAME=
+    LTLIB[]NAME=
+    LIB[]NAME[]_PREFIX=
+  fi
+  AC_SUBST([HAVE_LIB]NAME)
+  AC_SUBST([LIB]NAME)
+  AC_SUBST([LTLIB]NAME)
+  AC_SUBST([LIB]NAME[_PREFIX])
+  popdef([NAME])
+  popdef([Name])
+])
+
+dnl Determine the platform dependent parameters needed to use rpath:
+dnl   acl_libext,
+dnl   acl_shlibext,
+dnl   acl_libname_spec,
+dnl   acl_library_names_spec,
+dnl   acl_hardcode_libdir_flag_spec,
+dnl   acl_hardcode_libdir_separator,
+dnl   acl_hardcode_direct,
+dnl   acl_hardcode_minus_L.
+AC_DEFUN([AC_LIB_RPATH],
+[
+  dnl Tell automake >= 1.10 to complain if config.rpath is missing.
+  m4_ifdef([AC_REQUIRE_AUX_FILE], [AC_REQUIRE_AUX_FILE([config.rpath])])
+  AC_REQUIRE([AC_PROG_CC])                dnl we use $CC, $GCC, $LDFLAGS
+  AC_REQUIRE([AC_LIB_PROG_LD])            dnl we use $LD, $with_gnu_ld
+  AC_REQUIRE([AC_CANONICAL_HOST])         dnl we use $host
+  AC_REQUIRE([AC_CONFIG_AUX_DIR_DEFAULT]) dnl we use $ac_aux_dir
+  AC_CACHE_CHECK([for shared library run path origin], [acl_cv_rpath], [
+    CC="$CC" GCC="$GCC" LDFLAGS="$LDFLAGS" LD="$LD" with_gnu_ld="$with_gnu_ld" \
+    ${CONFIG_SHELL-/bin/sh} "$ac_aux_dir/config.rpath" "$host" > conftest.sh
+    . ./conftest.sh
+    rm -f ./conftest.sh
+    acl_cv_rpath=done
+  ])
+  wl="$acl_cv_wl"
+  acl_libext="$acl_cv_libext"
+  acl_shlibext="$acl_cv_shlibext"
+  acl_libname_spec="$acl_cv_libname_spec"
+  acl_library_names_spec="$acl_cv_library_names_spec"
+  acl_hardcode_libdir_flag_spec="$acl_cv_hardcode_libdir_flag_spec"
+  acl_hardcode_libdir_separator="$acl_cv_hardcode_libdir_separator"
+  acl_hardcode_direct="$acl_cv_hardcode_direct"
+  acl_hardcode_minus_L="$acl_cv_hardcode_minus_L"
+  dnl Determine whether the user wants rpath handling at all.
+  AC_ARG_ENABLE([rpath],
+    [  --disable-rpath         do not hardcode runtime library paths],
+    :, enable_rpath=yes)
+])
+
+dnl AC_LIB_FROMPACKAGE(name, package)
+dnl declares that libname comes from the given package. The configure file
+dnl will then not have a --with-libname-prefix option but a
+dnl --with-package-prefix option. Several libraries can come from the same
+dnl package. This declaration must occur before an AC_LIB_LINKFLAGS or similar
+dnl macro call that searches for libname.
+AC_DEFUN([AC_LIB_FROMPACKAGE],
+[
+  pushdef([NAME],[m4_translit([$1],[abcdefghijklmnopqrstuvwxyz./+-],
+                                   [ABCDEFGHIJKLMNOPQRSTUVWXYZ____])])
+  define([acl_frompackage_]NAME, [$2])
+  popdef([NAME])
+  pushdef([PACK],[$2])
+  pushdef([PACKUP],[m4_translit(PACK,[abcdefghijklmnopqrstuvwxyz./+-],
+                                     [ABCDEFGHIJKLMNOPQRSTUVWXYZ____])])
+  define([acl_libsinpackage_]PACKUP,
+    m4_ifdef([acl_libsinpackage_]PACKUP, [m4_defn([acl_libsinpackage_]PACKUP)[, ]],)[lib$1])
+  popdef([PACKUP])
+  popdef([PACK])
+])
+
+dnl AC_LIB_LINKFLAGS_BODY(name [, dependencies]) searches for libname and
+dnl the libraries corresponding to explicit and implicit dependencies.
+dnl Sets the LIB${NAME}, LTLIB${NAME} and INC${NAME} variables.
+dnl Also, sets the LIB${NAME}_PREFIX variable to nonempty if libname was found
+dnl in ${LIB${NAME}_PREFIX}/$acl_libdirstem.
+AC_DEFUN([AC_LIB_LINKFLAGS_BODY],
+[
+  AC_REQUIRE([AC_LIB_PREPARE_MULTILIB])
+  pushdef([NAME],[m4_translit([$1],[abcdefghijklmnopqrstuvwxyz./+-],
+                                   [ABCDEFGHIJKLMNOPQRSTUVWXYZ____])])
+  pushdef([PACK],[m4_ifdef([acl_frompackage_]NAME, [acl_frompackage_]NAME, lib[$1])])
+  pushdef([PACKUP],[m4_translit(PACK,[abcdefghijklmnopqrstuvwxyz./+-],
+                                     [ABCDEFGHIJKLMNOPQRSTUVWXYZ____])])
+  pushdef([PACKLIBS],[m4_ifdef([acl_frompackage_]NAME, [acl_libsinpackage_]PACKUP, lib[$1])])
+  dnl Autoconf >= 2.61 supports dots in --with options.
+  pushdef([P_A_C_K],[m4_if(m4_version_compare(m4_defn([m4_PACKAGE_VERSION]),[2.61]),[-1],[m4_translit(PACK,[.],[_])],PACK)])
+  dnl By default, look in $includedir and $libdir.
+  use_additional=yes
+  AC_LIB_WITH_FINAL_PREFIX([
+    eval additional_includedir=\"$includedir\"
+    eval additional_libdir=\"$libdir\"
+  ])
+  AC_ARG_WITH(P_A_C_K[-prefix],
+[[  --with-]]P_A_C_K[[-prefix[=DIR]  search for ]PACKLIBS[ in DIR/include and DIR/lib
+  --without-]]P_A_C_K[[-prefix     don't search for ]PACKLIBS[ in includedir and libdir]],
+[
+    if test "X$withval" = "Xno"; then
+      use_additional=no
+    else
+      if test "X$withval" = "X"; then
+        AC_LIB_WITH_FINAL_PREFIX([
+          eval additional_includedir=\"$includedir\"
+          eval additional_libdir=\"$libdir\"
+        ])
+      else
+        additional_includedir="$withval/include"
+        additional_libdir="$withval/$acl_libdirstem"
+        if test "$acl_libdirstem2" != "$acl_libdirstem" \
+           && ! test -d "$withval/$acl_libdirstem"; then
+          additional_libdir="$withval/$acl_libdirstem2"
+        fi
+      fi
+    fi
+])
+  dnl Search the library and its dependencies in $additional_libdir and
+  dnl $LDFLAGS. Using breadth-first-seach.
+  LIB[]NAME=
+  LTLIB[]NAME=
+  INC[]NAME=
+  LIB[]NAME[]_PREFIX=
+  dnl HAVE_LIB${NAME} is an indicator that LIB${NAME}, LTLIB${NAME} have been
+  dnl computed. So it has to be reset here.
+  HAVE_LIB[]NAME=
+  rpathdirs=
+  ltrpathdirs=
+  names_already_handled=
+  names_next_round='$1 $2'
+  while test -n "$names_next_round"; do
+    names_this_round="$names_next_round"
+    names_next_round=
+    for name in $names_this_round; do
+      already_handled=
+      for n in $names_already_handled; do
+        if test "$n" = "$name"; then
+          already_handled=yes
+          break
+        fi
+      done
+      if test -z "$already_handled"; then
+        names_already_handled="$names_already_handled $name"
+        dnl See if it was already located by an earlier AC_LIB_LINKFLAGS
+        dnl or AC_LIB_HAVE_LINKFLAGS call.
+        uppername=`echo "$name" | sed -e 'y|abcdefghijklmnopqrstuvwxyz./+-|ABCDEFGHIJKLMNOPQRSTUVWXYZ____|'`
+        eval value=\"\$HAVE_LIB$uppername\"
+        if test -n "$value"; then
+          if test "$value" = yes; then
+            eval value=\"\$LIB$uppername\"
+            test -z "$value" || LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }$value"
+            eval value=\"\$LTLIB$uppername\"
+            test -z "$value" || LTLIB[]NAME="${LTLIB[]NAME}${LTLIB[]NAME:+ }$value"
+          else
+            dnl An earlier call to AC_LIB_HAVE_LINKFLAGS has determined
+            dnl that this library doesn't exist. So just drop it.
+            :
+          fi
+        else
+          dnl Search the library lib$name in $additional_libdir and $LDFLAGS
+          dnl and the already constructed $LIBNAME/$LTLIBNAME.
+          found_dir=
+          found_la=
+          found_so=
+          found_a=
+          eval libname=\"$acl_libname_spec\"    # typically: libname=lib$name
+          if test -n "$acl_shlibext"; then
+            shrext=".$acl_shlibext"             # typically: shrext=.so
+          else
+            shrext=
+          fi
+          if test $use_additional = yes; then
+            dir="$additional_libdir"
+            dnl The same code as in the loop below:
+            dnl First look for a shared library.
+            if test -n "$acl_shlibext"; then
+              if test -f "$dir/$libname$shrext"; then
+                found_dir="$dir"
+                found_so="$dir/$libname$shrext"
+              else
+                if test "$acl_library_names_spec" = '$libname$shrext$versuffix'; then
+                  ver=`(cd "$dir" && \
+                        for f in "$libname$shrext".*; do echo "$f"; done \
+                        | sed -e "s,^$libname$shrext\\\\.,," \
+                        | sort -t '.' -n -r -k1,1 -k2,2 -k3,3 -k4,4 -k5,5 \
+                        | sed 1q ) 2>/dev/null`
+                  if test -n "$ver" && test -f "$dir/$libname$shrext.$ver"; then
+                    found_dir="$dir"
+                    found_so="$dir/$libname$shrext.$ver"
+                  fi
+                else
+                  eval library_names=\"$acl_library_names_spec\"
+                  for f in $library_names; do
+                    if test -f "$dir/$f"; then
+                      found_dir="$dir"
+                      found_so="$dir/$f"
+                      break
+                    fi
+                  done
+                fi
+              fi
+            fi
+            dnl Then look for a static library.
+            if test "X$found_dir" = "X"; then
+              if test -f "$dir/$libname.$acl_libext"; then
+                found_dir="$dir"
+                found_a="$dir/$libname.$acl_libext"
+              fi
+            fi
+            if test "X$found_dir" != "X"; then
+              if test -f "$dir/$libname.la"; then
+                found_la="$dir/$libname.la"
+              fi
+            fi
+          fi
+          if test "X$found_dir" = "X"; then
+            for x in $LDFLAGS $LTLIB[]NAME; do
+              AC_LIB_WITH_FINAL_PREFIX([eval x=\"$x\"])
+              case "$x" in
+                -L*)
+                  dir=`echo "X$x" | sed -e 's/^X-L//'`
+                  dnl First look for a shared library.
+                  if test -n "$acl_shlibext"; then
+                    if test -f "$dir/$libname$shrext"; then
+                      found_dir="$dir"
+                      found_so="$dir/$libname$shrext"
+                    else
+                      if test "$acl_library_names_spec" = '$libname$shrext$versuffix'; then
+                        ver=`(cd "$dir" && \
+                              for f in "$libname$shrext".*; do echo "$f"; done \
+                              | sed -e "s,^$libname$shrext\\\\.,," \
+                              | sort -t '.' -n -r -k1,1 -k2,2 -k3,3 -k4,4 -k5,5 \
+                              | sed 1q ) 2>/dev/null`
+                        if test -n "$ver" && test -f "$dir/$libname$shrext.$ver"; then
+                          found_dir="$dir"
+                          found_so="$dir/$libname$shrext.$ver"
+                        fi
+                      else
+                        eval library_names=\"$acl_library_names_spec\"
+                        for f in $library_names; do
+                          if test -f "$dir/$f"; then
+                            found_dir="$dir"
+                            found_so="$dir/$f"
+                            break
+                          fi
+                        done
+                      fi
+                    fi
+                  fi
+                  dnl Then look for a static library.
+                  if test "X$found_dir" = "X"; then
+                    if test -f "$dir/$libname.$acl_libext"; then
+                      found_dir="$dir"
+                      found_a="$dir/$libname.$acl_libext"
+                    fi
+                  fi
+                  if test "X$found_dir" != "X"; then
+                    if test -f "$dir/$libname.la"; then
+                      found_la="$dir/$libname.la"
+                    fi
+                  fi
+                  ;;
+              esac
+              if test "X$found_dir" != "X"; then
+                break
+              fi
+            done
+          fi
+          if test "X$found_dir" != "X"; then
+            dnl Found the library.
+            LTLIB[]NAME="${LTLIB[]NAME}${LTLIB[]NAME:+ }-L$found_dir -l$name"
+            if test "X$found_so" != "X"; then
+              dnl Linking with a shared library. We attempt to hardcode its
+              dnl directory into the executable's runpath, unless it's the
+              dnl standard /usr/lib.
+              if test "$enable_rpath" = no \
+                 || test "X$found_dir" = "X/usr/$acl_libdirstem" \
+                 || test "X$found_dir" = "X/usr/$acl_libdirstem2"; then
+                dnl No hardcoding is needed.
+                LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }$found_so"
+              else
+                dnl Use an explicit option to hardcode DIR into the resulting
+                dnl binary.
+                dnl Potentially add DIR to ltrpathdirs.
+                dnl The ltrpathdirs will be appended to $LTLIBNAME at the end.
+                haveit=
+                for x in $ltrpathdirs; do
+                  if test "X$x" = "X$found_dir"; then
+                    haveit=yes
+                    break
+                  fi
+                done
+                if test -z "$haveit"; then
+                  ltrpathdirs="$ltrpathdirs $found_dir"
+                fi
+                dnl The hardcoding into $LIBNAME is system dependent.
+                if test "$acl_hardcode_direct" = yes; then
+                  dnl Using DIR/libNAME.so during linking hardcodes DIR into the
+                  dnl resulting binary.
+                  LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }$found_so"
+                else
+                  if test -n "$acl_hardcode_libdir_flag_spec" && test "$acl_hardcode_minus_L" = no; then
+                    dnl Use an explicit option to hardcode DIR into the resulting
+                    dnl binary.
+                    LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }$found_so"
+                    dnl Potentially add DIR to rpathdirs.
+                    dnl The rpathdirs will be appended to $LIBNAME at the end.
+                    haveit=
+                    for x in $rpathdirs; do
+                      if test "X$x" = "X$found_dir"; then
+                        haveit=yes
+                        break
+                      fi
+                    done
+                    if test -z "$haveit"; then
+                      rpathdirs="$rpathdirs $found_dir"
+                    fi
+                  else
+                    dnl Rely on "-L$found_dir".
+                    dnl But don't add it if it's already contained in the LDFLAGS
+                    dnl or the already constructed $LIBNAME
+                    haveit=
+                    for x in $LDFLAGS $LIB[]NAME; do
+                      AC_LIB_WITH_FINAL_PREFIX([eval x=\"$x\"])
+                      if test "X$x" = "X-L$found_dir"; then
+                        haveit=yes
+                        break
+                      fi
+                    done
+                    if test -z "$haveit"; then
+                      LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }-L$found_dir"
+                    fi
+                    if test "$acl_hardcode_minus_L" != no; then
+                      dnl FIXME: Not sure whether we should use
+                      dnl "-L$found_dir -l$name" or "-L$found_dir $found_so"
+                      dnl here.
+                      LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }$found_so"
+                    else
+                      dnl We cannot use $acl_hardcode_runpath_var and LD_RUN_PATH
+                      dnl here, because this doesn't fit in flags passed to the
+                      dnl compiler. So give up. No hardcoding. This affects only
+                      dnl very old systems.
+                      dnl FIXME: Not sure whether we should use
+                      dnl "-L$found_dir -l$name" or "-L$found_dir $found_so"
+                      dnl here.
+                      LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }-l$name"
+                    fi
+                  fi
+                fi
+              fi
+            else
+              if test "X$found_a" != "X"; then
+                dnl Linking with a static library.
+                LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }$found_a"
+              else
+                dnl We shouldn't come here, but anyway it's good to have a
+                dnl fallback.
+                LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }-L$found_dir -l$name"
+              fi
+            fi
+            dnl Assume the include files are nearby.
+            additional_includedir=
+            case "$found_dir" in
+              */$acl_libdirstem | */$acl_libdirstem/)
+                basedir=`echo "X$found_dir" | sed -e 's,^X,,' -e "s,/$acl_libdirstem/"'*$,,'`
+                if test "$name" = '$1'; then
+                  LIB[]NAME[]_PREFIX="$basedir"
+                fi
+                additional_includedir="$basedir/include"
+                ;;
+              */$acl_libdirstem2 | */$acl_libdirstem2/)
+                basedir=`echo "X$found_dir" | sed -e 's,^X,,' -e "s,/$acl_libdirstem2/"'*$,,'`
+                if test "$name" = '$1'; then
+                  LIB[]NAME[]_PREFIX="$basedir"
+                fi
+                additional_includedir="$basedir/include"
+                ;;
+            esac
+            if test "X$additional_includedir" != "X"; then
+              dnl Potentially add $additional_includedir to $INCNAME.
+              dnl But don't add it
+              dnl   1. if it's the standard /usr/include,
+              dnl   2. if it's /usr/local/include and we are using GCC on Linux,
+              dnl   3. if it's already present in $CPPFLAGS or the already
+              dnl      constructed $INCNAME,
+              dnl   4. if it doesn't exist as a directory.
+              if test "X$additional_includedir" != "X/usr/include"; then
+                haveit=
+                if test "X$additional_includedir" = "X/usr/local/include"; then
+                  if test -n "$GCC"; then
+                    case $host_os in
+                      linux* | gnu* | k*bsd*-gnu) haveit=yes;;
+                    esac
+                  fi
+                fi
+                if test -z "$haveit"; then
+                  for x in $CPPFLAGS $INC[]NAME; do
+                    AC_LIB_WITH_FINAL_PREFIX([eval x=\"$x\"])
+                    if test "X$x" = "X-I$additional_includedir"; then
+                      haveit=yes
+                      break
+                    fi
+                  done
+                  if test -z "$haveit"; then
+                    if test -d "$additional_includedir"; then
+                      dnl Really add $additional_includedir to $INCNAME.
+                      INC[]NAME="${INC[]NAME}${INC[]NAME:+ }-I$additional_includedir"
+                    fi
+                  fi
+                fi
+              fi
+            fi
+            dnl Look for dependencies.
+            if test -n "$found_la"; then
+              dnl Read the .la file. It defines the variables
+              dnl dlname, library_names, old_library, dependency_libs, current,
+              dnl age, revision, installed, dlopen, dlpreopen, libdir.
+              save_libdir="$libdir"
+              case "$found_la" in
+                */* | *\\*) . "$found_la" ;;
+                *) . "./$found_la" ;;
+              esac
+              libdir="$save_libdir"
+              dnl We use only dependency_libs.
+              for dep in $dependency_libs; do
+                case "$dep" in
+                  -L*)
+                    additional_libdir=`echo "X$dep" | sed -e 's/^X-L//'`
+                    dnl Potentially add $additional_libdir to $LIBNAME and $LTLIBNAME.
+                    dnl But don't add it
+                    dnl   1. if it's the standard /usr/lib,
+                    dnl   2. if it's /usr/local/lib and we are using GCC on Linux,
+                    dnl   3. if it's already present in $LDFLAGS or the already
+                    dnl      constructed $LIBNAME,
+                    dnl   4. if it doesn't exist as a directory.
+                    if test "X$additional_libdir" != "X/usr/$acl_libdirstem" \
+                       && test "X$additional_libdir" != "X/usr/$acl_libdirstem2"; then
+                      haveit=
+                      if test "X$additional_libdir" = "X/usr/local/$acl_libdirstem" \
+                         || test "X$additional_libdir" = "X/usr/local/$acl_libdirstem2"; then
+                        if test -n "$GCC"; then
+                          case $host_os in
+                            linux* | gnu* | k*bsd*-gnu) haveit=yes;;
+                          esac
+                        fi
+                      fi
+                      if test -z "$haveit"; then
+                        haveit=
+                        for x in $LDFLAGS $LIB[]NAME; do
+                          AC_LIB_WITH_FINAL_PREFIX([eval x=\"$x\"])
+                          if test "X$x" = "X-L$additional_libdir"; then
+                            haveit=yes
+                            break
+                          fi
+                        done
+                        if test -z "$haveit"; then
+                          if test -d "$additional_libdir"; then
+                            dnl Really add $additional_libdir to $LIBNAME.
+                            LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }-L$additional_libdir"
+                          fi
+                        fi
+                        haveit=
+                        for x in $LDFLAGS $LTLIB[]NAME; do
+                          AC_LIB_WITH_FINAL_PREFIX([eval x=\"$x\"])
+                          if test "X$x" = "X-L$additional_libdir"; then
+                            haveit=yes
+                            break
+                          fi
+                        done
+                        if test -z "$haveit"; then
+                          if test -d "$additional_libdir"; then
+                            dnl Really add $additional_libdir to $LTLIBNAME.
+                            LTLIB[]NAME="${LTLIB[]NAME}${LTLIB[]NAME:+ }-L$additional_libdir"
+                          fi
+                        fi
+                      fi
+                    fi
+                    ;;
+                  -R*)
+                    dir=`echo "X$dep" | sed -e 's/^X-R//'`
+                    if test "$enable_rpath" != no; then
+                      dnl Potentially add DIR to rpathdirs.
+                      dnl The rpathdirs will be appended to $LIBNAME at the end.
+                      haveit=
+                      for x in $rpathdirs; do
+                        if test "X$x" = "X$dir"; then
+                          haveit=yes
+                          break
+                        fi
+                      done
+                      if test -z "$haveit"; then
+                        rpathdirs="$rpathdirs $dir"
+                      fi
+                      dnl Potentially add DIR to ltrpathdirs.
+                      dnl The ltrpathdirs will be appended to $LTLIBNAME at the end.
+                      haveit=
+                      for x in $ltrpathdirs; do
+                        if test "X$x" = "X$dir"; then
+                          haveit=yes
+                          break
+                        fi
+                      done
+                      if test -z "$haveit"; then
+                        ltrpathdirs="$ltrpathdirs $dir"
+                      fi
+                    fi
+                    ;;
+                  -l*)
+                    dnl Handle this in the next round.
+                    names_next_round="$names_next_round "`echo "X$dep" | sed -e 's/^X-l//'`
+                    ;;
+                  *.la)
+                    dnl Handle this in the next round. Throw away the .la's
+                    dnl directory; it is already contained in a preceding -L
+                    dnl option.
+                    names_next_round="$names_next_round "`echo "X$dep" | sed -e 's,^X.*/,,' -e 's,^lib,,' -e 's,\.la$,,'`
+                    ;;
+                  *)
+                    dnl Most likely an immediate library name.
+                    LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }$dep"
+                    LTLIB[]NAME="${LTLIB[]NAME}${LTLIB[]NAME:+ }$dep"
+                    ;;
+                esac
+              done
+            fi
+          else
+            dnl Didn't find the library; assume it is in the system directories
+            dnl known to the linker and runtime loader. (All the system
+            dnl directories known to the linker should also be known to the
+            dnl runtime loader, otherwise the system is severely misconfigured.)
+            LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }-l$name"
+            LTLIB[]NAME="${LTLIB[]NAME}${LTLIB[]NAME:+ }-l$name"
+          fi
+        fi
+      fi
+    done
+  done
+  if test "X$rpathdirs" != "X"; then
+    if test -n "$acl_hardcode_libdir_separator"; then
+      dnl Weird platform: only the last -rpath option counts, the user must
+      dnl pass all path elements in one option. We can arrange that for a
+      dnl single library, but not when more than one $LIBNAMEs are used.
+      alldirs=
+      for found_dir in $rpathdirs; do
+        alldirs="${alldirs}${alldirs:+$acl_hardcode_libdir_separator}$found_dir"
+      done
+      dnl Note: acl_hardcode_libdir_flag_spec uses $libdir and $wl.
+      acl_save_libdir="$libdir"
+      libdir="$alldirs"
+      eval flag=\"$acl_hardcode_libdir_flag_spec\"
+      libdir="$acl_save_libdir"
+      LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }$flag"
+    else
+      dnl The -rpath options are cumulative.
+      for found_dir in $rpathdirs; do
+        acl_save_libdir="$libdir"
+        libdir="$found_dir"
+        eval flag=\"$acl_hardcode_libdir_flag_spec\"
+        libdir="$acl_save_libdir"
+        LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }$flag"
+      done
+    fi
+  fi
+  if test "X$ltrpathdirs" != "X"; then
+    dnl When using libtool, the option that works for both libraries and
+    dnl executables is -R. The -R options are cumulative.
+    for found_dir in $ltrpathdirs; do
+      LTLIB[]NAME="${LTLIB[]NAME}${LTLIB[]NAME:+ }-R$found_dir"
+    done
+  fi
+  popdef([P_A_C_K])
+  popdef([PACKLIBS])
+  popdef([PACKUP])
+  popdef([PACK])
+  popdef([NAME])
+])
+
+dnl AC_LIB_APPENDTOVAR(VAR, CONTENTS) appends the elements of CONTENTS to VAR,
+dnl unless already present in VAR.
+dnl Works only for CPPFLAGS, not for LIB* variables because that sometimes
+dnl contains two or three consecutive elements that belong together.
+AC_DEFUN([AC_LIB_APPENDTOVAR],
+[
+  for element in [$2]; do
+    haveit=
+    for x in $[$1]; do
+      AC_LIB_WITH_FINAL_PREFIX([eval x=\"$x\"])
+      if test "X$x" = "X$element"; then
+        haveit=yes
+        break
+      fi
+    done
+    if test -z "$haveit"; then
+      [$1]="${[$1]}${[$1]:+ }$element"
+    fi
+  done
+])
+
+dnl For those cases where a variable contains several -L and -l options
+dnl referring to unknown libraries and directories, this macro determines the
+dnl necessary additional linker options for the runtime path.
+dnl AC_LIB_LINKFLAGS_FROM_LIBS([LDADDVAR], [LIBSVALUE], [USE-LIBTOOL])
+dnl sets LDADDVAR to linker options needed together with LIBSVALUE.
+dnl If USE-LIBTOOL evaluates to non-empty, linking with libtool is assumed,
+dnl otherwise linking without libtool is assumed.
+AC_DEFUN([AC_LIB_LINKFLAGS_FROM_LIBS],
+[
+  AC_REQUIRE([AC_LIB_RPATH])
+  AC_REQUIRE([AC_LIB_PREPARE_MULTILIB])
+  $1=
+  if test "$enable_rpath" != no; then
+    if test -n "$acl_hardcode_libdir_flag_spec" && test "$acl_hardcode_minus_L" = no; then
+      dnl Use an explicit option to hardcode directories into the resulting
+      dnl binary.
+      rpathdirs=
+      next=
+      for opt in $2; do
+        if test -n "$next"; then
+          dir="$next"
+          dnl No need to hardcode the standard /usr/lib.
+          if test "X$dir" != "X/usr/$acl_libdirstem" \
+             && test "X$dir" != "X/usr/$acl_libdirstem2"; then
+            rpathdirs="$rpathdirs $dir"
+          fi
+          next=
+        else
+          case $opt in
+            -L) next=yes ;;
+            -L*) dir=`echo "X$opt" | sed -e 's,^X-L,,'`
+                 dnl No need to hardcode the standard /usr/lib.
+                 if test "X$dir" != "X/usr/$acl_libdirstem" \
+                    && test "X$dir" != "X/usr/$acl_libdirstem2"; then
+                   rpathdirs="$rpathdirs $dir"
+                 fi
+                 next= ;;
+            *) next= ;;
+          esac
+        fi
+      done
+      if test "X$rpathdirs" != "X"; then
+        if test -n ""$3""; then
+          dnl libtool is used for linking. Use -R options.
+          for dir in $rpathdirs; do
+            $1="${$1}${$1:+ }-R$dir"
+          done
+        else
+          dnl The linker is used for linking directly.
+          if test -n "$acl_hardcode_libdir_separator"; then
+            dnl Weird platform: only the last -rpath option counts, the user
+            dnl must pass all path elements in one option.
+            alldirs=
+            for dir in $rpathdirs; do
+              alldirs="${alldirs}${alldirs:+$acl_hardcode_libdir_separator}$dir"
+            done
+            acl_save_libdir="$libdir"
+            libdir="$alldirs"
+            eval flag=\"$acl_hardcode_libdir_flag_spec\"
+            libdir="$acl_save_libdir"
+            $1="$flag"
+          else
+            dnl The -rpath options are cumulative.
+            for dir in $rpathdirs; do
+              acl_save_libdir="$libdir"
+              libdir="$dir"
+              eval flag=\"$acl_hardcode_libdir_flag_spec\"
+              libdir="$acl_save_libdir"
+              $1="${$1}${$1:+ }$flag"
+            done
+          fi
+        fi
+      fi
+    fi
+  fi
+  AC_SUBST([$1])
+])
diff --git a/m4/lib-prefix.m4 b/m4/lib-prefix.m4
new file mode 100644
index 0000000..6851031
--- /dev/null
+++ b/m4/lib-prefix.m4
@@ -0,0 +1,224 @@
+# lib-prefix.m4 serial 7 (gettext-0.18)
+dnl Copyright (C) 2001-2005, 2008-2016 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+dnl From Bruno Haible.
+
+dnl AC_LIB_ARG_WITH is synonymous to AC_ARG_WITH in autoconf-2.13, and
+dnl similar to AC_ARG_WITH in autoconf 2.52...2.57 except that is doesn't
+dnl require excessive bracketing.
+ifdef([AC_HELP_STRING],
+[AC_DEFUN([AC_LIB_ARG_WITH], [AC_ARG_WITH([$1],[[$2]],[$3],[$4])])],
+[AC_DEFUN([AC_][LIB_ARG_WITH], [AC_ARG_WITH([$1],[$2],[$3],[$4])])])
+
+dnl AC_LIB_PREFIX adds to the CPPFLAGS and LDFLAGS the flags that are needed
+dnl to access previously installed libraries. The basic assumption is that
+dnl a user will want packages to use other packages he previously installed
+dnl with the same --prefix option.
+dnl This macro is not needed if only AC_LIB_LINKFLAGS is used to locate
+dnl libraries, but is otherwise very convenient.
+AC_DEFUN([AC_LIB_PREFIX],
+[
+  AC_BEFORE([$0], [AC_LIB_LINKFLAGS])
+  AC_REQUIRE([AC_PROG_CC])
+  AC_REQUIRE([AC_CANONICAL_HOST])
+  AC_REQUIRE([AC_LIB_PREPARE_MULTILIB])
+  AC_REQUIRE([AC_LIB_PREPARE_PREFIX])
+  dnl By default, look in $includedir and $libdir.
+  use_additional=yes
+  AC_LIB_WITH_FINAL_PREFIX([
+    eval additional_includedir=\"$includedir\"
+    eval additional_libdir=\"$libdir\"
+  ])
+  AC_LIB_ARG_WITH([lib-prefix],
+[  --with-lib-prefix[=DIR] search for libraries in DIR/include and DIR/lib
+  --without-lib-prefix    don't search for libraries in includedir and libdir],
+[
+    if test "X$withval" = "Xno"; then
+      use_additional=no
+    else
+      if test "X$withval" = "X"; then
+        AC_LIB_WITH_FINAL_PREFIX([
+          eval additional_includedir=\"$includedir\"
+          eval additional_libdir=\"$libdir\"
+        ])
+      else
+        additional_includedir="$withval/include"
+        additional_libdir="$withval/$acl_libdirstem"
+      fi
+    fi
+])
+  if test $use_additional = yes; then
+    dnl Potentially add $additional_includedir to $CPPFLAGS.
+    dnl But don't add it
+    dnl   1. if it's the standard /usr/include,
+    dnl   2. if it's already present in $CPPFLAGS,
+    dnl   3. if it's /usr/local/include and we are using GCC on Linux,
+    dnl   4. if it doesn't exist as a directory.
+    if test "X$additional_includedir" != "X/usr/include"; then
+      haveit=
+      for x in $CPPFLAGS; do
+        AC_LIB_WITH_FINAL_PREFIX([eval x=\"$x\"])
+        if test "X$x" = "X-I$additional_includedir"; then
+          haveit=yes
+          break
+        fi
+      done
+      if test -z "$haveit"; then
+        if test "X$additional_includedir" = "X/usr/local/include"; then
+          if test -n "$GCC"; then
+            case $host_os in
+              linux* | gnu* | k*bsd*-gnu) haveit=yes;;
+            esac
+          fi
+        fi
+        if test -z "$haveit"; then
+          if test -d "$additional_includedir"; then
+            dnl Really add $additional_includedir to $CPPFLAGS.
+            CPPFLAGS="${CPPFLAGS}${CPPFLAGS:+ }-I$additional_includedir"
+          fi
+        fi
+      fi
+    fi
+    dnl Potentially add $additional_libdir to $LDFLAGS.
+    dnl But don't add it
+    dnl   1. if it's the standard /usr/lib,
+    dnl   2. if it's already present in $LDFLAGS,
+    dnl   3. if it's /usr/local/lib and we are using GCC on Linux,
+    dnl   4. if it doesn't exist as a directory.
+    if test "X$additional_libdir" != "X/usr/$acl_libdirstem"; then
+      haveit=
+      for x in $LDFLAGS; do
+        AC_LIB_WITH_FINAL_PREFIX([eval x=\"$x\"])
+        if test "X$x" = "X-L$additional_libdir"; then
+          haveit=yes
+          break
+        fi
+      done
+      if test -z "$haveit"; then
+        if test "X$additional_libdir" = "X/usr/local/$acl_libdirstem"; then
+          if test -n "$GCC"; then
+            case $host_os in
+              linux*) haveit=yes;;
+            esac
+          fi
+        fi
+        if test -z "$haveit"; then
+          if test -d "$additional_libdir"; then
+            dnl Really add $additional_libdir to $LDFLAGS.
+            LDFLAGS="${LDFLAGS}${LDFLAGS:+ }-L$additional_libdir"
+          fi
+        fi
+      fi
+    fi
+  fi
+])
+
+dnl AC_LIB_PREPARE_PREFIX creates variables acl_final_prefix,
+dnl acl_final_exec_prefix, containing the values to which $prefix and
+dnl $exec_prefix will expand at the end of the configure script.
+AC_DEFUN([AC_LIB_PREPARE_PREFIX],
+[
+  dnl Unfortunately, prefix and exec_prefix get only finally determined
+  dnl at the end of configure.
+  if test "X$prefix" = "XNONE"; then
+    acl_final_prefix="$ac_default_prefix"
+  else
+    acl_final_prefix="$prefix"
+  fi
+  if test "X$exec_prefix" = "XNONE"; then
+    acl_final_exec_prefix='${prefix}'
+  else
+    acl_final_exec_prefix="$exec_prefix"
+  fi
+  acl_save_prefix="$prefix"
+  prefix="$acl_final_prefix"
+  eval acl_final_exec_prefix=\"$acl_final_exec_prefix\"
+  prefix="$acl_save_prefix"
+])
+
+dnl AC_LIB_WITH_FINAL_PREFIX([statement]) evaluates statement, with the
+dnl variables prefix and exec_prefix bound to the values they will have
+dnl at the end of the configure script.
+AC_DEFUN([AC_LIB_WITH_FINAL_PREFIX],
+[
+  acl_save_prefix="$prefix"
+  prefix="$acl_final_prefix"
+  acl_save_exec_prefix="$exec_prefix"
+  exec_prefix="$acl_final_exec_prefix"
+  $1
+  exec_prefix="$acl_save_exec_prefix"
+  prefix="$acl_save_prefix"
+])
+
+dnl AC_LIB_PREPARE_MULTILIB creates
+dnl - a variable acl_libdirstem, containing the basename of the libdir, either
+dnl   "lib" or "lib64" or "lib/64",
+dnl - a variable acl_libdirstem2, as a secondary possible value for
+dnl   acl_libdirstem, either the same as acl_libdirstem or "lib/sparcv9" or
+dnl   "lib/amd64".
+AC_DEFUN([AC_LIB_PREPARE_MULTILIB],
+[
+  dnl There is no formal standard regarding lib and lib64.
+  dnl On glibc systems, the current practice is that on a system supporting
+  dnl 32-bit and 64-bit instruction sets or ABIs, 64-bit libraries go under
+  dnl $prefix/lib64 and 32-bit libraries go under $prefix/lib. We determine
+  dnl the compiler's default mode by looking at the compiler's library search
+  dnl path. If at least one of its elements ends in /lib64 or points to a
+  dnl directory whose absolute pathname ends in /lib64, we assume a 64-bit ABI.
+  dnl Otherwise we use the default, namely "lib".
+  dnl On Solaris systems, the current practice is that on a system supporting
+  dnl 32-bit and 64-bit instruction sets or ABIs, 64-bit libraries go under
+  dnl $prefix/lib/64 (which is a symlink to either $prefix/lib/sparcv9 or
+  dnl $prefix/lib/amd64) and 32-bit libraries go under $prefix/lib.
+  AC_REQUIRE([AC_CANONICAL_HOST])
+  acl_libdirstem=lib
+  acl_libdirstem2=
+  case "$host_os" in
+    solaris*)
+      dnl See Solaris 10 Software Developer Collection > Solaris 64-bit Developer's Guide > The Development Environment
+      dnl <http://docs.sun.com/app/docs/doc/816-5138/dev-env?l=en&a=view>.
+      dnl "Portable Makefiles should refer to any library directories using the 64 symbolic link."
+      dnl But we want to recognize the sparcv9 or amd64 subdirectory also if the
+      dnl symlink is missing, so we set acl_libdirstem2 too.
+      AC_CACHE_CHECK([for 64-bit host], [gl_cv_solaris_64bit],
+        [AC_EGREP_CPP([sixtyfour bits], [
+#ifdef _LP64
+sixtyfour bits
+#endif
+           ], [gl_cv_solaris_64bit=yes], [gl_cv_solaris_64bit=no])
+        ])
+      if test $gl_cv_solaris_64bit = yes; then
+        acl_libdirstem=lib/64
+        case "$host_cpu" in
+          sparc*)        acl_libdirstem2=lib/sparcv9 ;;
+          i*86 | x86_64) acl_libdirstem2=lib/amd64 ;;
+        esac
+      fi
+      ;;
+    *)
+      searchpath=`(LC_ALL=C $CC -print-search-dirs) 2>/dev/null | sed -n -e 's,^libraries: ,,p' | sed -e 's,^=,,'`
+      if test -n "$searchpath"; then
+        acl_save_IFS="${IFS= 	}"; IFS=":"
+        for searchdir in $searchpath; do
+          if test -d "$searchdir"; then
+            case "$searchdir" in
+              */lib64/ | */lib64 ) acl_libdirstem=lib64 ;;
+              */../ | */.. )
+                # Better ignore directories of this form. They are misleading.
+                ;;
+              *) searchdir=`cd "$searchdir" && pwd`
+                 case "$searchdir" in
+                   */lib64 ) acl_libdirstem=lib64 ;;
+                 esac ;;
+            esac
+          fi
+        done
+        IFS="$acl_save_IFS"
+      fi
+      ;;
+  esac
+  test -n "$acl_libdirstem2" || acl_libdirstem2="$acl_libdirstem"
+])
diff --git a/m4/nls.m4 b/m4/nls.m4
new file mode 100644
index 0000000..afdb9ca
--- /dev/null
+++ b/m4/nls.m4
@@ -0,0 +1,32 @@
+# nls.m4 serial 5 (gettext-0.18)
+dnl Copyright (C) 1995-2003, 2005-2006, 2008-2014, 2016 Free Software
+dnl Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+dnl
+dnl This file can be used in projects which are not available under
+dnl the GNU General Public License or the GNU Library General Public
+dnl License but which still want to provide support for the GNU gettext
+dnl functionality.
+dnl Please note that the actual code of the GNU gettext library is covered
+dnl by the GNU Library General Public License, and the rest of the GNU
+dnl gettext package is covered by the GNU General Public License.
+dnl They are *not* in the public domain.
+
+dnl Authors:
+dnl   Ulrich Drepper <drepper@cygnus.com>, 1995-2000.
+dnl   Bruno Haible <haible@clisp.cons.org>, 2000-2003.
+
+AC_PREREQ([2.50])
+
+AC_DEFUN([AM_NLS],
+[
+  AC_MSG_CHECKING([whether NLS is requested])
+  dnl Default is enabled NLS
+  AC_ARG_ENABLE([nls],
+    [  --disable-nls           do not use Native Language Support],
+    USE_NLS=$enableval, USE_NLS=yes)
+  AC_MSG_RESULT([$USE_NLS])
+  AC_SUBST([USE_NLS])
+])
diff --git a/m4/pkg.m4 b/m4/pkg.m4
new file mode 100644
index 0000000..13a8890
--- /dev/null
+++ b/m4/pkg.m4
@@ -0,0 +1,275 @@
+# pkg.m4 - Macros to locate and utilise pkg-config.   -*- Autoconf -*-
+# serial 12 (pkg-config-0.29.2)
+
+dnl Copyright © 2004 Scott James Remnant <scott@netsplit.com>.
+dnl Copyright © 2012-2015 Dan Nicholson <dbn.lists@gmail.com>
+dnl
+dnl This program is free software; you can redistribute it and/or modify
+dnl it under the terms of the GNU General Public License as published by
+dnl the Free Software Foundation; either version 2 of the License, or
+dnl (at your option) any later version.
+dnl
+dnl This program is distributed in the hope that it will be useful, but
+dnl WITHOUT ANY WARRANTY; without even the implied warranty of
+dnl MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+dnl General Public License for more details.
+dnl
+dnl You should have received a copy of the GNU General Public License
+dnl along with this program; if not, write to the Free Software
+dnl Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
+dnl 02111-1307, USA.
+dnl
+dnl As a special exception to the GNU General Public License, if you
+dnl distribute this file as part of a program that contains a
+dnl configuration script generated by Autoconf, you may include it under
+dnl the same distribution terms that you use for the rest of that
+dnl program.
+
+dnl PKG_PREREQ(MIN-VERSION)
+dnl -----------------------
+dnl Since: 0.29
+dnl
+dnl Verify that the version of the pkg-config macros are at least
+dnl MIN-VERSION. Unlike PKG_PROG_PKG_CONFIG, which checks the user's
+dnl installed version of pkg-config, this checks the developer's version
+dnl of pkg.m4 when generating configure.
+dnl
+dnl To ensure that this macro is defined, also add:
+dnl m4_ifndef([PKG_PREREQ],
+dnl     [m4_fatal([must install pkg-config 0.29 or later before running autoconf/autogen])])
+dnl
+dnl See the "Since" comment for each macro you use to see what version
+dnl of the macros you require.
+m4_defun([PKG_PREREQ],
+[m4_define([PKG_MACROS_VERSION], [0.29.2])
+m4_if(m4_version_compare(PKG_MACROS_VERSION, [$1]), -1,
+    [m4_fatal([pkg.m4 version $1 or higher is required but ]PKG_MACROS_VERSION[ found])])
+])dnl PKG_PREREQ
+
+dnl PKG_PROG_PKG_CONFIG([MIN-VERSION])
+dnl ----------------------------------
+dnl Since: 0.16
+dnl
+dnl Search for the pkg-config tool and set the PKG_CONFIG variable to
+dnl first found in the path. Checks that the version of pkg-config found
+dnl is at least MIN-VERSION. If MIN-VERSION is not specified, 0.9.0 is
+dnl used since that's the first version where most current features of
+dnl pkg-config existed.
+AC_DEFUN([PKG_PROG_PKG_CONFIG],
+[m4_pattern_forbid([^_?PKG_[A-Z_]+$])
+m4_pattern_allow([^PKG_CONFIG(_(PATH|LIBDIR|SYSROOT_DIR|ALLOW_SYSTEM_(CFLAGS|LIBS)))?$])
+m4_pattern_allow([^PKG_CONFIG_(DISABLE_UNINSTALLED|TOP_BUILD_DIR|DEBUG_SPEW)$])
+AC_ARG_VAR([PKG_CONFIG], [path to pkg-config utility])
+AC_ARG_VAR([PKG_CONFIG_PATH], [directories to add to pkg-config's search path])
+AC_ARG_VAR([PKG_CONFIG_LIBDIR], [path overriding pkg-config's built-in search path])
+
+if test "x$ac_cv_env_PKG_CONFIG_set" != "xset"; then
+	AC_PATH_TOOL([PKG_CONFIG], [pkg-config])
+fi
+if test -n "$PKG_CONFIG"; then
+	_pkg_min_version=m4_default([$1], [0.9.0])
+	AC_MSG_CHECKING([pkg-config is at least version $_pkg_min_version])
+	if $PKG_CONFIG --atleast-pkgconfig-version $_pkg_min_version; then
+		AC_MSG_RESULT([yes])
+	else
+		AC_MSG_RESULT([no])
+		PKG_CONFIG=""
+	fi
+fi[]dnl
+])dnl PKG_PROG_PKG_CONFIG
+
+dnl PKG_CHECK_EXISTS(MODULES, [ACTION-IF-FOUND], [ACTION-IF-NOT-FOUND])
+dnl -------------------------------------------------------------------
+dnl Since: 0.18
+dnl
+dnl Check to see whether a particular set of modules exists. Similar to
+dnl PKG_CHECK_MODULES(), but does not set variables or print errors.
+dnl
+dnl Please remember that m4 expands AC_REQUIRE([PKG_PROG_PKG_CONFIG])
+dnl only at the first occurence in configure.ac, so if the first place
+dnl it's called might be skipped (such as if it is within an "if", you
+dnl have to call PKG_CHECK_EXISTS manually
+AC_DEFUN([PKG_CHECK_EXISTS],
+[AC_REQUIRE([PKG_PROG_PKG_CONFIG])dnl
+if test -n "$PKG_CONFIG" && \
+    AC_RUN_LOG([$PKG_CONFIG --exists --print-errors "$1"]); then
+  m4_default([$2], [:])
+m4_ifvaln([$3], [else
+  $3])dnl
+fi])
+
+dnl _PKG_CONFIG([VARIABLE], [COMMAND], [MODULES])
+dnl ---------------------------------------------
+dnl Internal wrapper calling pkg-config via PKG_CONFIG and setting
+dnl pkg_failed based on the result.
+m4_define([_PKG_CONFIG],
+[if test -n "$$1"; then
+    pkg_cv_[]$1="$$1"
+ elif test -n "$PKG_CONFIG"; then
+    PKG_CHECK_EXISTS([$3],
+                     [pkg_cv_[]$1=`$PKG_CONFIG --[]$2 "$3" 2>/dev/null`
+		      test "x$?" != "x0" && pkg_failed=yes ],
+		     [pkg_failed=yes])
+ else
+    pkg_failed=untried
+fi[]dnl
+])dnl _PKG_CONFIG
+
+dnl _PKG_SHORT_ERRORS_SUPPORTED
+dnl ---------------------------
+dnl Internal check to see if pkg-config supports short errors.
+AC_DEFUN([_PKG_SHORT_ERRORS_SUPPORTED],
+[AC_REQUIRE([PKG_PROG_PKG_CONFIG])
+if $PKG_CONFIG --atleast-pkgconfig-version 0.20; then
+        _pkg_short_errors_supported=yes
+else
+        _pkg_short_errors_supported=no
+fi[]dnl
+])dnl _PKG_SHORT_ERRORS_SUPPORTED
+
+
+dnl PKG_CHECK_MODULES(VARIABLE-PREFIX, MODULES, [ACTION-IF-FOUND],
+dnl   [ACTION-IF-NOT-FOUND])
+dnl --------------------------------------------------------------
+dnl Since: 0.4.0
+dnl
+dnl Note that if there is a possibility the first call to
+dnl PKG_CHECK_MODULES might not happen, you should be sure to include an
+dnl explicit call to PKG_PROG_PKG_CONFIG in your configure.ac
+AC_DEFUN([PKG_CHECK_MODULES],
+[AC_REQUIRE([PKG_PROG_PKG_CONFIG])dnl
+AC_ARG_VAR([$1][_CFLAGS], [C compiler flags for $1, overriding pkg-config])dnl
+AC_ARG_VAR([$1][_LIBS], [linker flags for $1, overriding pkg-config])dnl
+
+pkg_failed=no
+AC_MSG_CHECKING([for $2])
+
+_PKG_CONFIG([$1][_CFLAGS], [cflags], [$2])
+_PKG_CONFIG([$1][_LIBS], [libs], [$2])
+
+m4_define([_PKG_TEXT], [Alternatively, you may set the environment variables $1[]_CFLAGS
+and $1[]_LIBS to avoid the need to call pkg-config.
+See the pkg-config man page for more details.])
+
+if test $pkg_failed = yes; then
+        AC_MSG_RESULT([no])
+        _PKG_SHORT_ERRORS_SUPPORTED
+        if test $_pkg_short_errors_supported = yes; then
+	        $1[]_PKG_ERRORS=`$PKG_CONFIG --short-errors --print-errors --cflags --libs "$2" 2>&1`
+        else
+	        $1[]_PKG_ERRORS=`$PKG_CONFIG --print-errors --cflags --libs "$2" 2>&1`
+        fi
+	# Put the nasty error message in config.log where it belongs
+	echo "$$1[]_PKG_ERRORS" >&AS_MESSAGE_LOG_FD
+
+	m4_default([$4], [AC_MSG_ERROR(
+[Package requirements ($2) were not met:
+
+$$1_PKG_ERRORS
+
+Consider adjusting the PKG_CONFIG_PATH environment variable if you
+installed software in a non-standard prefix.
+
+_PKG_TEXT])[]dnl
+        ])
+elif test $pkg_failed = untried; then
+        AC_MSG_RESULT([no])
+	m4_default([$4], [AC_MSG_FAILURE(
+[The pkg-config script could not be found or is too old.  Make sure it
+is in your PATH or set the PKG_CONFIG environment variable to the full
+path to pkg-config.
+
+_PKG_TEXT
+
+To get pkg-config, see <http://pkg-config.freedesktop.org/>.])[]dnl
+        ])
+else
+	$1[]_CFLAGS=$pkg_cv_[]$1[]_CFLAGS
+	$1[]_LIBS=$pkg_cv_[]$1[]_LIBS
+        AC_MSG_RESULT([yes])
+	$3
+fi[]dnl
+])dnl PKG_CHECK_MODULES
+
+
+dnl PKG_CHECK_MODULES_STATIC(VARIABLE-PREFIX, MODULES, [ACTION-IF-FOUND],
+dnl   [ACTION-IF-NOT-FOUND])
+dnl ---------------------------------------------------------------------
+dnl Since: 0.29
+dnl
+dnl Checks for existence of MODULES and gathers its build flags with
+dnl static libraries enabled. Sets VARIABLE-PREFIX_CFLAGS from --cflags
+dnl and VARIABLE-PREFIX_LIBS from --libs.
+dnl
+dnl Note that if there is a possibility the first call to
+dnl PKG_CHECK_MODULES_STATIC might not happen, you should be sure to
+dnl include an explicit call to PKG_PROG_PKG_CONFIG in your
+dnl configure.ac.
+AC_DEFUN([PKG_CHECK_MODULES_STATIC],
+[AC_REQUIRE([PKG_PROG_PKG_CONFIG])dnl
+_save_PKG_CONFIG=$PKG_CONFIG
+PKG_CONFIG="$PKG_CONFIG --static"
+PKG_CHECK_MODULES($@)
+PKG_CONFIG=$_save_PKG_CONFIG[]dnl
+])dnl PKG_CHECK_MODULES_STATIC
+
+
+dnl PKG_INSTALLDIR([DIRECTORY])
+dnl -------------------------
+dnl Since: 0.27
+dnl
+dnl Substitutes the variable pkgconfigdir as the location where a module
+dnl should install pkg-config .pc files. By default the directory is
+dnl $libdir/pkgconfig, but the default can be changed by passing
+dnl DIRECTORY. The user can override through the --with-pkgconfigdir
+dnl parameter.
+AC_DEFUN([PKG_INSTALLDIR],
+[m4_pushdef([pkg_default], [m4_default([$1], ['${libdir}/pkgconfig'])])
+m4_pushdef([pkg_description],
+    [pkg-config installation directory @<:@]pkg_default[@:>@])
+AC_ARG_WITH([pkgconfigdir],
+    [AS_HELP_STRING([--with-pkgconfigdir], pkg_description)],,
+    [with_pkgconfigdir=]pkg_default)
+AC_SUBST([pkgconfigdir], [$with_pkgconfigdir])
+m4_popdef([pkg_default])
+m4_popdef([pkg_description])
+])dnl PKG_INSTALLDIR
+
+
+dnl PKG_NOARCH_INSTALLDIR([DIRECTORY])
+dnl --------------------------------
+dnl Since: 0.27
+dnl
+dnl Substitutes the variable noarch_pkgconfigdir as the location where a
+dnl module should install arch-independent pkg-config .pc files. By
+dnl default the directory is $datadir/pkgconfig, but the default can be
+dnl changed by passing DIRECTORY. The user can override through the
+dnl --with-noarch-pkgconfigdir parameter.
+AC_DEFUN([PKG_NOARCH_INSTALLDIR],
+[m4_pushdef([pkg_default], [m4_default([$1], ['${datadir}/pkgconfig'])])
+m4_pushdef([pkg_description],
+    [pkg-config arch-independent installation directory @<:@]pkg_default[@:>@])
+AC_ARG_WITH([noarch-pkgconfigdir],
+    [AS_HELP_STRING([--with-noarch-pkgconfigdir], pkg_description)],,
+    [with_noarch_pkgconfigdir=]pkg_default)
+AC_SUBST([noarch_pkgconfigdir], [$with_noarch_pkgconfigdir])
+m4_popdef([pkg_default])
+m4_popdef([pkg_description])
+])dnl PKG_NOARCH_INSTALLDIR
+
+
+dnl PKG_CHECK_VAR(VARIABLE, MODULE, CONFIG-VARIABLE,
+dnl [ACTION-IF-FOUND], [ACTION-IF-NOT-FOUND])
+dnl -------------------------------------------
+dnl Since: 0.28
+dnl
+dnl Retrieves the value of the pkg-config variable for the given module.
+AC_DEFUN([PKG_CHECK_VAR],
+[AC_REQUIRE([PKG_PROG_PKG_CONFIG])dnl
+AC_ARG_VAR([$1], [value of $3 for $2, overriding pkg-config])dnl
+
+_PKG_CONFIG([$1], [variable="][$3]["], [$2])
+AS_VAR_COPY([$1], [pkg_cv_][$1])
+
+AS_VAR_IF([$1], [""], [$5], [$4])dnl
+])dnl PKG_CHECK_VAR
diff --git a/m4/po.m4 b/m4/po.m4
new file mode 100644
index 0000000..f205061
--- /dev/null
+++ b/m4/po.m4
@@ -0,0 +1,6 @@
+# po.m4 serial 24
+dnl Dummy version of po.m4 from gettext. Crosstool-NG currently doesn't have
+dnl any localications for kconfig (and if we decide to, we'd need much more than
+dnl that). So ignore PO_SUBDIRS and any possible dependencies the real po.m4 would
+dnl have pulled in.
+AC_DEFUN([AM_PO_SUBDIRS], [])
diff --git a/m4/progtest.m4 b/m4/progtest.m4
new file mode 100644
index 0000000..9ace7c3
--- /dev/null
+++ b/m4/progtest.m4
@@ -0,0 +1,91 @@
+# progtest.m4 serial 7 (gettext-0.18.2)
+dnl Copyright (C) 1996-2003, 2005, 2008-2016 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+dnl
+dnl This file can be used in projects which are not available under
+dnl the GNU General Public License or the GNU Library General Public
+dnl License but which still want to provide support for the GNU gettext
+dnl functionality.
+dnl Please note that the actual code of the GNU gettext library is covered
+dnl by the GNU Library General Public License, and the rest of the GNU
+dnl gettext package is covered by the GNU General Public License.
+dnl They are *not* in the public domain.
+
+dnl Authors:
+dnl   Ulrich Drepper <drepper@cygnus.com>, 1996.
+
+AC_PREREQ([2.50])
+
+# Search path for a program which passes the given test.
+
+dnl AM_PATH_PROG_WITH_TEST(VARIABLE, PROG-TO-CHECK-FOR,
+dnl   TEST-PERFORMED-ON-FOUND_PROGRAM [, VALUE-IF-NOT-FOUND [, PATH]])
+AC_DEFUN([AM_PATH_PROG_WITH_TEST],
+[
+# Prepare PATH_SEPARATOR.
+# The user is always right.
+if test "${PATH_SEPARATOR+set}" != set; then
+  # Determine PATH_SEPARATOR by trying to find /bin/sh in a PATH which
+  # contains only /bin. Note that ksh looks also at the FPATH variable,
+  # so we have to set that as well for the test.
+  PATH_SEPARATOR=:
+  (PATH='/bin;/bin'; FPATH=$PATH; sh -c :) >/dev/null 2>&1 \
+    && { (PATH='/bin:/bin'; FPATH=$PATH; sh -c :) >/dev/null 2>&1 \
+           || PATH_SEPARATOR=';'
+       }
+fi
+
+# Find out how to test for executable files. Don't use a zero-byte file,
+# as systems may use methods other than mode bits to determine executability.
+cat >conf$$.file <<_ASEOF
+#! /bin/sh
+exit 0
+_ASEOF
+chmod +x conf$$.file
+if test -x conf$$.file >/dev/null 2>&1; then
+  ac_executable_p="test -x"
+else
+  ac_executable_p="test -f"
+fi
+rm -f conf$$.file
+
+# Extract the first word of "$2", so it can be a program name with args.
+set dummy $2; ac_word=[$]2
+AC_MSG_CHECKING([for $ac_word])
+AC_CACHE_VAL([ac_cv_path_$1],
+[case "[$]$1" in
+  [[\\/]]* | ?:[[\\/]]*)
+    ac_cv_path_$1="[$]$1" # Let the user override the test with a path.
+    ;;
+  *)
+    ac_save_IFS="$IFS"; IFS=$PATH_SEPARATOR
+    for ac_dir in ifelse([$5], , $PATH, [$5]); do
+      IFS="$ac_save_IFS"
+      test -z "$ac_dir" && ac_dir=.
+      for ac_exec_ext in '' $ac_executable_extensions; do
+        if $ac_executable_p "$ac_dir/$ac_word$ac_exec_ext"; then
+          echo "$as_me: trying $ac_dir/$ac_word..." >&AS_MESSAGE_LOG_FD
+          if [$3]; then
+            ac_cv_path_$1="$ac_dir/$ac_word$ac_exec_ext"
+            break 2
+          fi
+        fi
+      done
+    done
+    IFS="$ac_save_IFS"
+dnl If no 4th arg is given, leave the cache variable unset,
+dnl so AC_PATH_PROGS will keep looking.
+ifelse([$4], , , [  test -z "[$]ac_cv_path_$1" && ac_cv_path_$1="$4"
+])dnl
+    ;;
+esac])dnl
+$1="$ac_cv_path_$1"
+if test ifelse([$4], , [-n "[$]$1"], ["[$]$1" != "$4"]); then
+  AC_MSG_RESULT([$][$1])
+else
+  AC_MSG_RESULT([no])
+fi
+AC_SUBST([$1])dnl
+])
diff --git a/maintainer/create-release.sh b/maintainer/create-release.sh
index 6aa4cc8..498fc0a 100755
--- a/maintainer/create-release.sh
+++ b/maintainer/create-release.sh
@@ -1,8 +1,5 @@
 #!/bin/bash
 
-# Configurable portions
-docs_git=https://github.com/crosstool-ng/crosstool-ng.github.io.git
-docs_subdir=_pages/docs
 formats=( "bz2" "xz" )
 declare -A tar_opt=( ["bz2"]=j ["xz"]=J )
 digests=( md5 sha1 sha512 )
@@ -43,39 +40,9 @@ do_trace "Copying crosstool-NG"
 rm -rf "release/${version}"
 git archive --prefix="${version}/" HEAD | tar xf - -C "release"
 
-# Clone a repository for docs. Github does not support 'git archive --remote='.
-do_trace "Checking out docs"
-rm -rf "release/site"
-git clone --depth=1 "${docs_git}" "release/site"
-
 # The rest of modifications are inside the release directory
 cd "release/${version}"
 
-# Copy the docs instead of the MANUAL_ONLINE placeholder
-do_trace "Replacing docs"
-rm "docs/MANUAL_ONLINE"
-mkdir -p "docs/manual"
-for i in "../site/${docs_subdir}/"*.md; do
-    awk '
-BEGIN   { skip=0; }
-        {
-            if ($0=="---") {
-                if (NR==1) {
-                    skip=1
-                    next
-                }
-                else if (skip) {
-                    skip=0
-                    next
-                }
-            }
-            if (!skip) {
-                print $0
-            }
-        }
-' < "${i}" > "docs/manual/${i##*/}"
-done
-
 # Run bootstrap before it is removed
 do_trace "Bootstrapping"
 ./bootstrap
diff --git a/maintainer/download-docs.sh b/maintainer/download-docs.sh
new file mode 100755
index 0000000..3514a57
--- /dev/null
+++ b/maintainer/download-docs.sh
@@ -0,0 +1,59 @@
+#!/bin/bash
+
+# Usage:
+#  download-docs.sh TOP-LEVEL-DIR MANUAL-FILES...
+distdir=${1}
+shift
+
+# Configurable portions
+docs_git=https://github.com/crosstool-ng/crosstool-ng.github.io.git
+docs_subdir=_pages/docs
+
+# Clone a repository for docs. Github does not support 'git archive --remote='.
+set -ex
+git clone --depth=1 "${docs_git}" "${distdir}/site-docs"
+
+# Copy the docs instead of the MANUAL_ONLINE placeholder
+mkdir -p "${distdir}/docs/manual"
+while [ -n "${1}" ]; do
+    case "${1}" in
+        docs/manual/*) ;;
+        *) echo "Expected file not in docs/manual/: $1" >&2; exit 1;;
+    esac
+    input="${distdir}/site-docs/${docs_subdir}/${1#docs/manual/}"
+    if [ ! -r "${input}" ]; then
+        echo "Not found: ${1}" >&2
+        exit 1
+    fi
+    awk '
+BEGIN   { skip=0; }
+        {
+            if ($0=="---") {
+                if (NR==1) {
+                    skip=1
+                    next
+                }
+                else if (skip) {
+                    skip=0
+                    next
+                }
+            }
+            if (!skip) {
+                print $0
+            }
+        }
+    ' < "${input}" > "${distdir}/${1}"
+    rm -f "${input}"
+    shift
+done
+extra_md_pages=false
+for i in "${distdir}/site-docs/${docs_subdir}/"*.md; do
+    if [ -r "${i}" ]; then
+        echo "Unpackaged page in the manual: ${i#${distdir}/site-docs/${docs_subdir}/}"
+        extra_md_files=true
+    fi
+done
+if [ "${extra_md_files}" = "true" ]; then
+    exit 1
+fi
+rm -rf "${distdir}/site-docs"
diff --git a/paths.sh.in b/paths.sh.in
new file mode 100644
index 0000000..c1ba0bd
--- /dev/null
+++ b/paths.sh.in
@@ -0,0 +1,12 @@
+export install="@INSTALL@"
+export bash="@BASH_SHELL@"
+export awk="@AWK@"
+export grep="@GREP@"
+export make="@MAKE@"
+export sed="@SED@"
+export libtool="@LIBTOOL@"
+export libtoolize="@LIBTOOLIZE@"
+export objcopy="@OBJCOPY@"
+export objdump="@OBJDUMP@"
+export readelf="@READELF@"
+export patch="@PATCH@"
diff --git a/samples/samples.mk b/samples/samples.mk
index 178e537..aafac48 100644
--- a/samples/samples.mk
+++ b/samples/samples.mk
@@ -19,6 +19,7 @@ CT_UPDATE_SAMPLES := no
 # This part deals with the samples help entries
 
 help-config::
+	@echo  '  show-config        - show a brief overview of current configuration'
 	@echo  '  saveconfig         - Save current config as a preconfigured target'
 
 help-samples::
diff --git a/scripts/.gitignore b/scripts/.gitignore
deleted file mode 100644
index 553a363..0000000
--- a/scripts/.gitignore
+++ /dev/null
@@ -1,3 +0,0 @@
-crosstool-NG.sh
-saveSample.sh
-scripts.mk
diff --git a/scripts/compile b/scripts/compile
new file mode 100755
index 0000000..a85b723
--- /dev/null
+++ b/scripts/compile
@@ -0,0 +1,347 @@
+#! /bin/sh
+# Wrapper for compilers which do not understand '-c -o'.
+
+scriptversion=2012-10-14.11; # UTC
+
+# Copyright (C) 1999-2014 Free Software Foundation, Inc.
+# Written by Tom Tromey <tromey@cygnus.com>.
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2, or (at your option)
+# any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+# As a special exception to the GNU General Public License, if you
+# distribute this file as part of a program that contains a
+# configuration script generated by Autoconf, you may include it under
+# the same distribution terms that you use for the rest of that program.
+
+# This file is maintained in Automake, please report
+# bugs to <bug-automake@gnu.org> or send patches to
+# <automake-patches@gnu.org>.
+
+nl='
+'
+
+# We need space, tab and new line, in precisely that order.  Quoting is
+# there to prevent tools from complaining about whitespace usage.
+IFS=" ""	$nl"
+
+file_conv=
+
+# func_file_conv build_file lazy
+# Convert a $build file to $host form and store it in $file
+# Currently only supports Windows hosts. If the determined conversion
+# type is listed in (the comma separated) LAZY, no conversion will
+# take place.
+func_file_conv ()
+{
+  file=$1
+  case $file in
+    / | /[!/]*) # absolute file, and not a UNC file
+      if test -z "$file_conv"; then
+	# lazily determine how to convert abs files
+	case `uname -s` in
+	  MINGW*)
+	    file_conv=mingw
+	    ;;
+	  CYGWIN*)
+	    file_conv=cygwin
+	    ;;
+	  *)
+	    file_conv=wine
+	    ;;
+	esac
+      fi
+      case $file_conv/,$2, in
+	*,$file_conv,*)
+	  ;;
+	mingw/*)
+	  file=`cmd //C echo "$file " | sed -e 's/"\(.*\) " *$/\1/'`
+	  ;;
+	cygwin/*)
+	  file=`cygpath -m "$file" || echo "$file"`
+	  ;;
+	wine/*)
+	  file=`winepath -w "$file" || echo "$file"`
+	  ;;
+      esac
+      ;;
+  esac
+}
+
+# func_cl_dashL linkdir
+# Make cl look for libraries in LINKDIR
+func_cl_dashL ()
+{
+  func_file_conv "$1"
+  if test -z "$lib_path"; then
+    lib_path=$file
+  else
+    lib_path="$lib_path;$file"
+  fi
+  linker_opts="$linker_opts -LIBPATH:$file"
+}
+
+# func_cl_dashl library
+# Do a library search-path lookup for cl
+func_cl_dashl ()
+{
+  lib=$1
+  found=no
+  save_IFS=$IFS
+  IFS=';'
+  for dir in $lib_path $LIB
+  do
+    IFS=$save_IFS
+    if $shared && test -f "$dir/$lib.dll.lib"; then
+      found=yes
+      lib=$dir/$lib.dll.lib
+      break
+    fi
+    if test -f "$dir/$lib.lib"; then
+      found=yes
+      lib=$dir/$lib.lib
+      break
+    fi
+    if test -f "$dir/lib$lib.a"; then
+      found=yes
+      lib=$dir/lib$lib.a
+      break
+    fi
+  done
+  IFS=$save_IFS
+
+  if test "$found" != yes; then
+    lib=$lib.lib
+  fi
+}
+
+# func_cl_wrapper cl arg...
+# Adjust compile command to suit cl
+func_cl_wrapper ()
+{
+  # Assume a capable shell
+  lib_path=
+  shared=:
+  linker_opts=
+  for arg
+  do
+    if test -n "$eat"; then
+      eat=
+    else
+      case $1 in
+	-o)
+	  # configure might choose to run compile as 'compile cc -o foo foo.c'.
+	  eat=1
+	  case $2 in
+	    *.o | *.[oO][bB][jJ])
+	      func_file_conv "$2"
+	      set x "$@" -Fo"$file"
+	      shift
+	      ;;
+	    *)
+	      func_file_conv "$2"
+	      set x "$@" -Fe"$file"
+	      shift
+	      ;;
+	  esac
+	  ;;
+	-I)
+	  eat=1
+	  func_file_conv "$2" mingw
+	  set x "$@" -I"$file"
+	  shift
+	  ;;
+	-I*)
+	  func_file_conv "${1#-I}" mingw
+	  set x "$@" -I"$file"
+	  shift
+	  ;;
+	-l)
+	  eat=1
+	  func_cl_dashl "$2"
+	  set x "$@" "$lib"
+	  shift
+	  ;;
+	-l*)
+	  func_cl_dashl "${1#-l}"
+	  set x "$@" "$lib"
+	  shift
+	  ;;
+	-L)
+	  eat=1
+	  func_cl_dashL "$2"
+	  ;;
+	-L*)
+	  func_cl_dashL "${1#-L}"
+	  ;;
+	-static)
+	  shared=false
+	  ;;
+	-Wl,*)
+	  arg=${1#-Wl,}
+	  save_ifs="$IFS"; IFS=','
+	  for flag in $arg; do
+	    IFS="$save_ifs"
+	    linker_opts="$linker_opts $flag"
+	  done
+	  IFS="$save_ifs"
+	  ;;
+	-Xlinker)
+	  eat=1
+	  linker_opts="$linker_opts $2"
+	  ;;
+	-*)
+	  set x "$@" "$1"
+	  shift
+	  ;;
+	*.cc | *.CC | *.cxx | *.CXX | *.[cC]++)
+	  func_file_conv "$1"
+	  set x "$@" -Tp"$file"
+	  shift
+	  ;;
+	*.c | *.cpp | *.CPP | *.lib | *.LIB | *.Lib | *.OBJ | *.obj | *.[oO])
+	  func_file_conv "$1" mingw
+	  set x "$@" "$file"
+	  shift
+	  ;;
+	*)
+	  set x "$@" "$1"
+	  shift
+	  ;;
+      esac
+    fi
+    shift
+  done
+  if test -n "$linker_opts"; then
+    linker_opts="-link$linker_opts"
+  fi
+  exec "$@" $linker_opts
+  exit 1
+}
+
+eat=
+
+case $1 in
+  '')
+     echo "$0: No command.  Try '$0 --help' for more information." 1>&2
+     exit 1;
+     ;;
+  -h | --h*)
+    cat <<\EOF
+Usage: compile [--help] [--version] PROGRAM [ARGS]
+
+Wrapper for compilers which do not understand '-c -o'.
+Remove '-o dest.o' from ARGS, run PROGRAM with the remaining
+arguments, and rename the output as expected.
+
+If you are trying to build a whole package this is not the
+right script to run: please start by reading the file 'INSTALL'.
+
+Report bugs to <bug-automake@gnu.org>.
+EOF
+    exit $?
+    ;;
+  -v | --v*)
+    echo "compile $scriptversion"
+    exit $?
+    ;;
+  cl | *[/\\]cl | cl.exe | *[/\\]cl.exe )
+    func_cl_wrapper "$@"      # Doesn't return...
+    ;;
+esac
+
+ofile=
+cfile=
+
+for arg
+do
+  if test -n "$eat"; then
+    eat=
+  else
+    case $1 in
+      -o)
+	# configure might choose to run compile as 'compile cc -o foo foo.c'.
+	# So we strip '-o arg' only if arg is an object.
+	eat=1
+	case $2 in
+	  *.o | *.obj)
+	    ofile=$2
+	    ;;
+	  *)
+	    set x "$@" -o "$2"
+	    shift
+	    ;;
+	esac
+	;;
+      *.c)
+	cfile=$1
+	set x "$@" "$1"
+	shift
+	;;
+      *)
+	set x "$@" "$1"
+	shift
+	;;
+    esac
+  fi
+  shift
+done
+
+if test -z "$ofile" || test -z "$cfile"; then
+  # If no '-o' option was seen then we might have been invoked from a
+  # pattern rule where we don't need one.  That is ok -- this is a
+  # normal compilation that the losing compiler can handle.  If no
+  # '.c' file was seen then we are probably linking.  That is also
+  # ok.
+  exec "$@"
+fi
+
+# Name of file we expect compiler to create.
+cofile=`echo "$cfile" | sed 's|^.*[\\/]||; s|^[a-zA-Z]:||; s/\.c$/.o/'`
+
+# Create the lock directory.
+# Note: use '[/\\:.-]' here to ensure that we don't use the same name
+# that we are using for the .o file.  Also, base the name on the expected
+# object file name, since that is what matters with a parallel build.
+lockdir=`echo "$cofile" | sed -e 's|[/\\:.-]|_|g'`.d
+while true; do
+  if mkdir "$lockdir" >/dev/null 2>&1; then
+    break
+  fi
+  sleep 1
+done
+# FIXME: race condition here if user kills between mkdir and trap.
+trap "rmdir '$lockdir'; exit 1" 1 2 15
+
+# Run the compile.
+"$@"
+ret=$?
+
+if test -f "$cofile"; then
+  test "$cofile" = "$ofile" || mv "$cofile" "$ofile"
+elif test -f "${cofile}bj"; then
+  test "${cofile}bj" = "$ofile" || mv "${cofile}bj" "$ofile"
+fi
+
+rmdir "$lockdir"
+exit $ret
+
+# Local Variables:
+# mode: shell-script
+# sh-indentation: 2
+# eval: (add-hook 'write-file-hooks 'time-stamp)
+# time-stamp-start: "scriptversion="
+# time-stamp-format: "%:y-%02m-%02d.%02H"
+# time-stamp-time-zone: "UTC"
+# time-stamp-end: "; # UTC"
+# End:
diff --git a/scripts/config.rpath b/scripts/config.rpath
new file mode 100644
index 0000000..1b83ae0
--- /dev/null
+++ b/scripts/config.rpath
@@ -0,0 +1,2 @@
+# Dummy file for gettext dependencies
+:
diff --git a/scripts/crosstool-NG.sh.in b/scripts/crosstool-NG.sh
index 878681a..d4414b5 100644
--- a/scripts/crosstool-NG.sh.in
+++ b/scripts/crosstool-NG.sh
@@ -111,7 +111,7 @@ CT_TestOrAbort "The CONFIG_SHELL '${CT_CONFIG_SHELL}' is not valid" -f "${CT_CON
 CT_TOOLS_OVERRIDE_DIR="${CT_WORK_DIR}/tools"
 CT_DoLog DEBUG "Creating bin-override for tools in '${CT_TOOLS_OVERRIDE_DIR}'"
 CT_DoExecLog DEBUG mkdir -p "${CT_TOOLS_OVERRIDE_DIR}/bin"
-cat "${CT_LIB_DIR}/paths.sh" |while read trash line; do
+cat "${paths_sh_location}" |while read trash line; do
     tool="${line%%=*}"
     # Suppress extra quoting
     eval path=${line#*=}
@@ -563,8 +563,8 @@ if [ -z "${CT_RESTART}" ]; then
         CT_PARALLEL_JOBS="${CT_JOBS}"
     fi
     # Use the number of processors+1 when automatically setting the number of
-    # parallel jobs.  Fall back to 1 if the host doesn't use GLIBC.
-    AUTO_JOBS=$((`@@CT_cpucount@@ 2>/dev/null || echo 0` + 1))
+    # parallel jobs.
+    AUTO_JOBS=$[ BUILD_NCPUS + 1 ]
     [ ${CT_PARALLEL_JOBS} -eq 0 ] && JOBSFLAGS="${JOBSFLAGS} -j${AUTO_JOBS}"
     [ ${CT_PARALLEL_JOBS} -gt 0 ] && JOBSFLAGS="${JOBSFLAGS} -j${CT_PARALLEL_JOBS}"
     JOBSFLAGS="${JOBSFLAGS} -l${CT_LOAD}"
diff --git a/scripts/depcomp b/scripts/depcomp
new file mode 100755
index 0000000..fc98710
--- /dev/null
+++ b/scripts/depcomp
@@ -0,0 +1,791 @@
+#! /bin/sh
+# depcomp - compile a program generating dependencies as side-effects
+
+scriptversion=2013-05-30.07; # UTC
+
+# Copyright (C) 1999-2014 Free Software Foundation, Inc.
+
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2, or (at your option)
+# any later version.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+# As a special exception to the GNU General Public License, if you
+# distribute this file as part of a program that contains a
+# configuration script generated by Autoconf, you may include it under
+# the same distribution terms that you use for the rest of that program.
+
+# Originally written by Alexandre Oliva <oliva@dcc.unicamp.br>.
+
+case $1 in
+  '')
+    echo "$0: No command.  Try '$0 --help' for more information." 1>&2
+    exit 1;
+    ;;
+  -h | --h*)
+    cat <<\EOF
+Usage: depcomp [--help] [--version] PROGRAM [ARGS]
+
+Run PROGRAMS ARGS to compile a file, generating dependencies
+as side-effects.
+
+Environment variables:
+  depmode     Dependency tracking mode.
+  source      Source file read by 'PROGRAMS ARGS'.
+  object      Object file output by 'PROGRAMS ARGS'.
+  DEPDIR      directory where to store dependencies.
+  depfile     Dependency file to output.
+  tmpdepfile  Temporary file to use when outputting dependencies.
+  libtool     Whether libtool is used (yes/no).
+
+Report bugs to <bug-automake@gnu.org>.
+EOF
+    exit $?
+    ;;
+  -v | --v*)
+    echo "depcomp $scriptversion"
+    exit $?
+    ;;
+esac
+
+# Get the directory component of the given path, and save it in the
+# global variables '$dir'.  Note that this directory component will
+# be either empty or ending with a '/' character.  This is deliberate.
+set_dir_from ()
+{
+  case $1 in
+    */*) dir=`echo "$1" | sed -e 's|/[^/]*$|/|'`;;
+      *) dir=;;
+  esac
+}
+
+# Get the suffix-stripped basename of the given path, and save it the
+# global variable '$base'.
+set_base_from ()
+{
+  base=`echo "$1" | sed -e 's|^.*/||' -e 's/\.[^.]*$//'`
+}
+
+# If no dependency file was actually created by the compiler invocation,
+# we still have to create a dummy depfile, to avoid errors with the
+# Makefile "include basename.Plo" scheme.
+make_dummy_depfile ()
+{
+  echo "#dummy" > "$depfile"
+}
+
+# Factor out some common post-processing of the generated depfile.
+# Requires the auxiliary global variable '$tmpdepfile' to be set.
+aix_post_process_depfile ()
+{
+  # If the compiler actually managed to produce a dependency file,
+  # post-process it.
+  if test -f "$tmpdepfile"; then
+    # Each line is of the form 'foo.o: dependency.h'.
+    # Do two passes, one to just change these to
+    #   $object: dependency.h
+    # and one to simply output
+    #   dependency.h:
+    # which is needed to avoid the deleted-header problem.
+    { sed -e "s,^.*\.[$lower]*:,$object:," < "$tmpdepfile"
+      sed -e "s,^.*\.[$lower]*:[$tab ]*,," -e 's,$,:,' < "$tmpdepfile"
+    } > "$depfile"
+    rm -f "$tmpdepfile"
+  else
+    make_dummy_depfile
+  fi
+}
+
+# A tabulation character.
+tab='	'
+# A newline character.
+nl='
+'
+# Character ranges might be problematic outside the C locale.
+# These definitions help.
+upper=ABCDEFGHIJKLMNOPQRSTUVWXYZ
+lower=abcdefghijklmnopqrstuvwxyz
+digits=0123456789
+alpha=${upper}${lower}
+
+if test -z "$depmode" || test -z "$source" || test -z "$object"; then
+  echo "depcomp: Variables source, object and depmode must be set" 1>&2
+  exit 1
+fi
+
+# Dependencies for sub/bar.o or sub/bar.obj go into sub/.deps/bar.Po.
+depfile=${depfile-`echo "$object" |
+  sed 's|[^\\/]*$|'${DEPDIR-.deps}'/&|;s|\.\([^.]*\)$|.P\1|;s|Pobj$|Po|'`}
+tmpdepfile=${tmpdepfile-`echo "$depfile" | sed 's/\.\([^.]*\)$/.T\1/'`}
+
+rm -f "$tmpdepfile"
+
+# Avoid interferences from the environment.
+gccflag= dashmflag=
+
+# Some modes work just like other modes, but use different flags.  We
+# parameterize here, but still list the modes in the big case below,
+# to make depend.m4 easier to write.  Note that we *cannot* use a case
+# here, because this file can only contain one case statement.
+if test "$depmode" = hp; then
+  # HP compiler uses -M and no extra arg.
+  gccflag=-M
+  depmode=gcc
+fi
+
+if test "$depmode" = dashXmstdout; then
+  # This is just like dashmstdout with a different argument.
+  dashmflag=-xM
+  depmode=dashmstdout
+fi
+
+cygpath_u="cygpath -u -f -"
+if test "$depmode" = msvcmsys; then
+  # This is just like msvisualcpp but w/o cygpath translation.
+  # Just convert the backslash-escaped backslashes to single forward
+  # slashes to satisfy depend.m4
+  cygpath_u='sed s,\\\\,/,g'
+  depmode=msvisualcpp
+fi
+
+if test "$depmode" = msvc7msys; then
+  # This is just like msvc7 but w/o cygpath translation.
+  # Just convert the backslash-escaped backslashes to single forward
+  # slashes to satisfy depend.m4
+  cygpath_u='sed s,\\\\,/,g'
+  depmode=msvc7
+fi
+
+if test "$depmode" = xlc; then
+  # IBM C/C++ Compilers xlc/xlC can output gcc-like dependency information.
+  gccflag=-qmakedep=gcc,-MF
+  depmode=gcc
+fi
+
+case "$depmode" in
+gcc3)
+## gcc 3 implements dependency tracking that does exactly what
+## we want.  Yay!  Note: for some reason libtool 1.4 doesn't like
+## it if -MD -MP comes after the -MF stuff.  Hmm.
+## Unfortunately, FreeBSD c89 acceptance of flags depends upon
+## the command line argument order; so add the flags where they
+## appear in depend2.am.  Note that the slowdown incurred here
+## affects only configure: in makefiles, %FASTDEP% shortcuts this.
+  for arg
+  do
+    case $arg in
+    -c) set fnord "$@" -MT "$object" -MD -MP -MF "$tmpdepfile" "$arg" ;;
+    *)  set fnord "$@" "$arg" ;;
+    esac
+    shift # fnord
+    shift # $arg
+  done
+  "$@"
+  stat=$?
+  if test $stat -ne 0; then
+    rm -f "$tmpdepfile"
+    exit $stat
+  fi
+  mv "$tmpdepfile" "$depfile"
+  ;;
+
+gcc)
+## Note that this doesn't just cater to obsosete pre-3.x GCC compilers.
+## but also to in-use compilers like IMB xlc/xlC and the HP C compiler.
+## (see the conditional assignment to $gccflag above).
+## There are various ways to get dependency output from gcc.  Here's
+## why we pick this rather obscure method:
+## - Don't want to use -MD because we'd like the dependencies to end
+##   up in a subdir.  Having to rename by hand is ugly.
+##   (We might end up doing this anyway to support other compilers.)
+## - The DEPENDENCIES_OUTPUT environment variable makes gcc act like
+##   -MM, not -M (despite what the docs say).  Also, it might not be
+##   supported by the other compilers which use the 'gcc' depmode.
+## - Using -M directly means running the compiler twice (even worse
+##   than renaming).
+  if test -z "$gccflag"; then
+    gccflag=-MD,
+  fi
+  "$@" -Wp,"$gccflag$tmpdepfile"
+  stat=$?
+  if test $stat -ne 0; then
+    rm -f "$tmpdepfile"
+    exit $stat
+  fi
+  rm -f "$depfile"
+  echo "$object : \\" > "$depfile"
+  # The second -e expression handles DOS-style file names with drive
+  # letters.
+  sed -e 's/^[^:]*: / /' \
+      -e 's/^['$alpha']:\/[^:]*: / /' < "$tmpdepfile" >> "$depfile"
+## This next piece of magic avoids the "deleted header file" problem.
+## The problem is that when a header file which appears in a .P file
+## is deleted, the dependency causes make to die (because there is
+## typically no way to rebuild the header).  We avoid this by adding
+## dummy dependencies for each header file.  Too bad gcc doesn't do
+## this for us directly.
+## Some versions of gcc put a space before the ':'.  On the theory
+## that the space means something, we add a space to the output as
+## well.  hp depmode also adds that space, but also prefixes the VPATH
+## to the object.  Take care to not repeat it in the output.
+## Some versions of the HPUX 10.20 sed can't process this invocation
+## correctly.  Breaking it into two sed invocations is a workaround.
+  tr ' ' "$nl" < "$tmpdepfile" \
+    | sed -e 's/^\\$//' -e '/^$/d' -e "s|.*$object$||" -e '/:$/d' \
+    | sed -e 's/$/ :/' >> "$depfile"
+  rm -f "$tmpdepfile"
+  ;;
+
+hp)
+  # This case exists only to let depend.m4 do its work.  It works by
+  # looking at the text of this script.  This case will never be run,
+  # since it is checked for above.
+  exit 1
+  ;;
+
+sgi)
+  if test "$libtool" = yes; then
+    "$@" "-Wp,-MDupdate,$tmpdepfile"
+  else
+    "$@" -MDupdate "$tmpdepfile"
+  fi
+  stat=$?
+  if test $stat -ne 0; then
+    rm -f "$tmpdepfile"
+    exit $stat
+  fi
+  rm -f "$depfile"
+
+  if test -f "$tmpdepfile"; then  # yes, the sourcefile depend on other files
+    echo "$object : \\" > "$depfile"
+    # Clip off the initial element (the dependent).  Don't try to be
+    # clever and replace this with sed code, as IRIX sed won't handle
+    # lines with more than a fixed number of characters (4096 in
+    # IRIX 6.2 sed, 8192 in IRIX 6.5).  We also remove comment lines;
+    # the IRIX cc adds comments like '#:fec' to the end of the
+    # dependency line.
+    tr ' ' "$nl" < "$tmpdepfile" \
+      | sed -e 's/^.*\.o://' -e 's/#.*$//' -e '/^$/ d' \
+      | tr "$nl" ' ' >> "$depfile"
+    echo >> "$depfile"
+    # The second pass generates a dummy entry for each header file.
+    tr ' ' "$nl" < "$tmpdepfile" \
+      | sed -e 's/^.*\.o://' -e 's/#.*$//' -e '/^$/ d' -e 's/$/:/' \
+      >> "$depfile"
+  else
+    make_dummy_depfile
+  fi
+  rm -f "$tmpdepfile"
+  ;;
+
+xlc)
+  # This case exists only to let depend.m4 do its work.  It works by
+  # looking at the text of this script.  This case will never be run,
+  # since it is checked for above.
+  exit 1
+  ;;
+
+aix)
+  # The C for AIX Compiler uses -M and outputs the dependencies
+  # in a .u file.  In older versions, this file always lives in the
+  # current directory.  Also, the AIX compiler puts '$object:' at the
+  # start of each line; $object doesn't have directory information.
+  # Version 6 uses the directory in both cases.
+  set_dir_from "$object"
+  set_base_from "$object"
+  if test "$libtool" = yes; then
+    tmpdepfile1=$dir$base.u
+    tmpdepfile2=$base.u
+    tmpdepfile3=$dir.libs/$base.u
+    "$@" -Wc,-M
+  else
+    tmpdepfile1=$dir$base.u
+    tmpdepfile2=$dir$base.u
+    tmpdepfile3=$dir$base.u
+    "$@" -M
+  fi
+  stat=$?
+  if test $stat -ne 0; then
+    rm -f "$tmpdepfile1" "$tmpdepfile2" "$tmpdepfile3"
+    exit $stat
+  fi
+
+  for tmpdepfile in "$tmpdepfile1" "$tmpdepfile2" "$tmpdepfile3"
+  do
+    test -f "$tmpdepfile" && break
+  done
+  aix_post_process_depfile
+  ;;
+
+tcc)
+  # tcc (Tiny C Compiler) understand '-MD -MF file' since version 0.9.26
+  # FIXME: That version still under development at the moment of writing.
+  #        Make that this statement remains true also for stable, released
+  #        versions.
+  # It will wrap lines (doesn't matter whether long or short) with a
+  # trailing '\', as in:
+  #
+  #   foo.o : \
+  #    foo.c \
+  #    foo.h \
+  #
+  # It will put a trailing '\' even on the last line, and will use leading
+  # spaces rather than leading tabs (at least since its commit 0394caf7
+  # "Emit spaces for -MD").
+  "$@" -MD -MF "$tmpdepfile"
+  stat=$?
+  if test $stat -ne 0; then
+    rm -f "$tmpdepfile"
+    exit $stat
+  fi
+  rm -f "$depfile"
+  # Each non-empty line is of the form 'foo.o : \' or ' dep.h \'.
+  # We have to change lines of the first kind to '$object: \'.
+  sed -e "s|.*:|$object :|" < "$tmpdepfile" > "$depfile"
+  # And for each line of the second kind, we have to emit a 'dep.h:'
+  # dummy dependency, to avoid the deleted-header problem.
+  sed -n -e 's|^  *\(.*\) *\\$|\1:|p' < "$tmpdepfile" >> "$depfile"
+  rm -f "$tmpdepfile"
+  ;;
+
+## The order of this option in the case statement is important, since the
+## shell code in configure will try each of these formats in the order
+## listed in this file.  A plain '-MD' option would be understood by many
+## compilers, so we must ensure this comes after the gcc and icc options.
+pgcc)
+  # Portland's C compiler understands '-MD'.
+  # Will always output deps to 'file.d' where file is the root name of the
+  # source file under compilation, even if file resides in a subdirectory.
+  # The object file name does not affect the name of the '.d' file.
+  # pgcc 10.2 will output
+  #    foo.o: sub/foo.c sub/foo.h
+  # and will wrap long lines using '\' :
+  #    foo.o: sub/foo.c ... \
+  #     sub/foo.h ... \
+  #     ...
+  set_dir_from "$object"
+  # Use the source, not the object, to determine the base name, since
+  # that's sadly what pgcc will do too.
+  set_base_from "$source"
+  tmpdepfile=$base.d
+
+  # For projects that build the same source file twice into different object
+  # files, the pgcc approach of using the *source* file root name can cause
+  # problems in parallel builds.  Use a locking strategy to avoid stomping on
+  # the same $tmpdepfile.
+  lockdir=$base.d-lock
+  trap "
+    echo '$0: caught signal, cleaning up...' >&2
+    rmdir '$lockdir'
+    exit 1
+  " 1 2 13 15
+  numtries=100
+  i=$numtries
+  while test $i -gt 0; do
+    # mkdir is a portable test-and-set.
+    if mkdir "$lockdir" 2>/dev/null; then
+      # This process acquired the lock.
+      "$@" -MD
+      stat=$?
+      # Release the lock.
+      rmdir "$lockdir"
+      break
+    else
+      # If the lock is being held by a different process, wait
+      # until the winning process is done or we timeout.
+      while test -d "$lockdir" && test $i -gt 0; do
+        sleep 1
+        i=`expr $i - 1`
+      done
+    fi
+    i=`expr $i - 1`
+  done
+  trap - 1 2 13 15
+  if test $i -le 0; then
+    echo "$0: failed to acquire lock after $numtries attempts" >&2
+    echo "$0: check lockdir '$lockdir'" >&2
+    exit 1
+  fi
+
+  if test $stat -ne 0; then
+    rm -f "$tmpdepfile"
+    exit $stat
+  fi
+  rm -f "$depfile"
+  # Each line is of the form `foo.o: dependent.h',
+  # or `foo.o: dep1.h dep2.h \', or ` dep3.h dep4.h \'.
+  # Do two passes, one to just change these to
+  # `$object: dependent.h' and one to simply `dependent.h:'.
+  sed "s,^[^:]*:,$object :," < "$tmpdepfile" > "$depfile"
+  # Some versions of the HPUX 10.20 sed can't process this invocation
+  # correctly.  Breaking it into two sed invocations is a workaround.
+  sed 's,^[^:]*: \(.*\)$,\1,;s/^\\$//;/^$/d;/:$/d' < "$tmpdepfile" \
+    | sed -e 's/$/ :/' >> "$depfile"
+  rm -f "$tmpdepfile"
+  ;;
+
+hp2)
+  # The "hp" stanza above does not work with aCC (C++) and HP's ia64
+  # compilers, which have integrated preprocessors.  The correct option
+  # to use with these is +Maked; it writes dependencies to a file named
+  # 'foo.d', which lands next to the object file, wherever that
+  # happens to be.
+  # Much of this is similar to the tru64 case; see comments there.
+  set_dir_from  "$object"
+  set_base_from "$object"
+  if test "$libtool" = yes; then
+    tmpdepfile1=$dir$base.d
+    tmpdepfile2=$dir.libs/$base.d
+    "$@" -Wc,+Maked
+  else
+    tmpdepfile1=$dir$base.d
+    tmpdepfile2=$dir$base.d
+    "$@" +Maked
+  fi
+  stat=$?
+  if test $stat -ne 0; then
+     rm -f "$tmpdepfile1" "$tmpdepfile2"
+     exit $stat
+  fi
+
+  for tmpdepfile in "$tmpdepfile1" "$tmpdepfile2"
+  do
+    test -f "$tmpdepfile" && break
+  done
+  if test -f "$tmpdepfile"; then
+    sed -e "s,^.*\.[$lower]*:,$object:," "$tmpdepfile" > "$depfile"
+    # Add 'dependent.h:' lines.
+    sed -ne '2,${
+               s/^ *//
+               s/ \\*$//
+               s/$/:/
+               p
+             }' "$tmpdepfile" >> "$depfile"
+  else
+    make_dummy_depfile
+  fi
+  rm -f "$tmpdepfile" "$tmpdepfile2"
+  ;;
+
+tru64)
+  # The Tru64 compiler uses -MD to generate dependencies as a side
+  # effect.  'cc -MD -o foo.o ...' puts the dependencies into 'foo.o.d'.
+  # At least on Alpha/Redhat 6.1, Compaq CCC V6.2-504 seems to put
+  # dependencies in 'foo.d' instead, so we check for that too.
+  # Subdirectories are respected.
+  set_dir_from  "$object"
+  set_base_from "$object"
+
+  if test "$libtool" = yes; then
+    # Libtool generates 2 separate objects for the 2 libraries.  These
+    # two compilations output dependencies in $dir.libs/$base.o.d and
+    # in $dir$base.o.d.  We have to check for both files, because
+    # one of the two compilations can be disabled.  We should prefer
+    # $dir$base.o.d over $dir.libs/$base.o.d because the latter is
+    # automatically cleaned when .libs/ is deleted, while ignoring
+    # the former would cause a distcleancheck panic.
+    tmpdepfile1=$dir$base.o.d          # libtool 1.5
+    tmpdepfile2=$dir.libs/$base.o.d    # Likewise.
+    tmpdepfile3=$dir.libs/$base.d      # Compaq CCC V6.2-504
+    "$@" -Wc,-MD
+  else
+    tmpdepfile1=$dir$base.d
+    tmpdepfile2=$dir$base.d
+    tmpdepfile3=$dir$base.d
+    "$@" -MD
+  fi
+
+  stat=$?
+  if test $stat -ne 0; then
+    rm -f "$tmpdepfile1" "$tmpdepfile2" "$tmpdepfile3"
+    exit $stat
+  fi
+
+  for tmpdepfile in "$tmpdepfile1" "$tmpdepfile2" "$tmpdepfile3"
+  do
+    test -f "$tmpdepfile" && break
+  done
+  # Same post-processing that is required for AIX mode.
+  aix_post_process_depfile
+  ;;
+
+msvc7)
+  if test "$libtool" = yes; then
+    showIncludes=-Wc,-showIncludes
+  else
+    showIncludes=-showIncludes
+  fi
+  "$@" $showIncludes > "$tmpdepfile"
+  stat=$?
+  grep -v '^Note: including file: ' "$tmpdepfile"
+  if test $stat -ne 0; then
+    rm -f "$tmpdepfile"
+    exit $stat
+  fi
+  rm -f "$depfile"
+  echo "$object : \\" > "$depfile"
+  # The first sed program below extracts the file names and escapes
+  # backslashes for cygpath.  The second sed program outputs the file
+  # name when reading, but also accumulates all include files in the
+  # hold buffer in order to output them again at the end.  This only
+  # works with sed implementations that can handle large buffers.
+  sed < "$tmpdepfile" -n '
+/^Note: including file:  *\(.*\)/ {
+  s//\1/
+  s/\\/\\\\/g
+  p
+}' | $cygpath_u | sort -u | sed -n '
+s/ /\\ /g
+s/\(.*\)/'"$tab"'\1 \\/p
+s/.\(.*\) \\/\1:/
+H
+$ {
+  s/.*/'"$tab"'/
+  G
+  p
+}' >> "$depfile"
+  echo >> "$depfile" # make sure the fragment doesn't end with a backslash
+  rm -f "$tmpdepfile"
+  ;;
+
+msvc7msys)
+  # This case exists only to let depend.m4 do its work.  It works by
+  # looking at the text of this script.  This case will never be run,
+  # since it is checked for above.
+  exit 1
+  ;;
+
+#nosideeffect)
+  # This comment above is used by automake to tell side-effect
+  # dependency tracking mechanisms from slower ones.
+
+dashmstdout)
+  # Important note: in order to support this mode, a compiler *must*
+  # always write the preprocessed file to stdout, regardless of -o.
+  "$@" || exit $?
+
+  # Remove the call to Libtool.
+  if test "$libtool" = yes; then
+    while test "X$1" != 'X--mode=compile'; do
+      shift
+    done
+    shift
+  fi
+
+  # Remove '-o $object'.
+  IFS=" "
+  for arg
+  do
+    case $arg in
+    -o)
+      shift
+      ;;
+    $object)
+      shift
+      ;;
+    *)
+      set fnord "$@" "$arg"
+      shift # fnord
+      shift # $arg
+      ;;
+    esac
+  done
+
+  test -z "$dashmflag" && dashmflag=-M
+  # Require at least two characters before searching for ':'
+  # in the target name.  This is to cope with DOS-style filenames:
+  # a dependency such as 'c:/foo/bar' could be seen as target 'c' otherwise.
+  "$@" $dashmflag |
+    sed "s|^[$tab ]*[^:$tab ][^:][^:]*:[$tab ]*|$object: |" > "$tmpdepfile"
+  rm -f "$depfile"
+  cat < "$tmpdepfile" > "$depfile"
+  # Some versions of the HPUX 10.20 sed can't process this sed invocation
+  # correctly.  Breaking it into two sed invocations is a workaround.
+  tr ' ' "$nl" < "$tmpdepfile" \
+    | sed -e 's/^\\$//' -e '/^$/d' -e '/:$/d' \
+    | sed -e 's/$/ :/' >> "$depfile"
+  rm -f "$tmpdepfile"
+  ;;
+
+dashXmstdout)
+  # This case only exists to satisfy depend.m4.  It is never actually
+  # run, as this mode is specially recognized in the preamble.
+  exit 1
+  ;;
+
+makedepend)
+  "$@" || exit $?
+  # Remove any Libtool call
+  if test "$libtool" = yes; then
+    while test "X$1" != 'X--mode=compile'; do
+      shift
+    done
+    shift
+  fi
+  # X makedepend
+  shift
+  cleared=no eat=no
+  for arg
+  do
+    case $cleared in
+    no)
+      set ""; shift
+      cleared=yes ;;
+    esac
+    if test $eat = yes; then
+      eat=no
+      continue
+    fi
+    case "$arg" in
+    -D*|-I*)
+      set fnord "$@" "$arg"; shift ;;
+    # Strip any option that makedepend may not understand.  Remove
+    # the object too, otherwise makedepend will parse it as a source file.
+    -arch)
+      eat=yes ;;
+    -*|$object)
+      ;;
+    *)
+      set fnord "$@" "$arg"; shift ;;
+    esac
+  done
+  obj_suffix=`echo "$object" | sed 's/^.*\././'`
+  touch "$tmpdepfile"
+  ${MAKEDEPEND-makedepend} -o"$obj_suffix" -f"$tmpdepfile" "$@"
+  rm -f "$depfile"
+  # makedepend may prepend the VPATH from the source file name to the object.
+  # No need to regex-escape $object, excess matching of '.' is harmless.
+  sed "s|^.*\($object *:\)|\1|" "$tmpdepfile" > "$depfile"
+  # Some versions of the HPUX 10.20 sed can't process the last invocation
+  # correctly.  Breaking it into two sed invocations is a workaround.
+  sed '1,2d' "$tmpdepfile" \
+    | tr ' ' "$nl" \
+    | sed -e 's/^\\$//' -e '/^$/d' -e '/:$/d' \
+    | sed -e 's/$/ :/' >> "$depfile"
+  rm -f "$tmpdepfile" "$tmpdepfile".bak
+  ;;
+
+cpp)
+  # Important note: in order to support this mode, a compiler *must*
+  # always write the preprocessed file to stdout.
+  "$@" || exit $?
+
+  # Remove the call to Libtool.
+  if test "$libtool" = yes; then
+    while test "X$1" != 'X--mode=compile'; do
+      shift
+    done
+    shift
+  fi
+
+  # Remove '-o $object'.
+  IFS=" "
+  for arg
+  do
+    case $arg in
+    -o)
+      shift
+      ;;
+    $object)
+      shift
+      ;;
+    *)
+      set fnord "$@" "$arg"
+      shift # fnord
+      shift # $arg
+      ;;
+    esac
+  done
+
+  "$@" -E \
+    | sed -n -e '/^# [0-9][0-9]* "\([^"]*\)".*/ s:: \1 \\:p' \
+             -e '/^#line [0-9][0-9]* "\([^"]*\)".*/ s:: \1 \\:p' \
+    | sed '$ s: \\$::' > "$tmpdepfile"
+  rm -f "$depfile"
+  echo "$object : \\" > "$depfile"
+  cat < "$tmpdepfile" >> "$depfile"
+  sed < "$tmpdepfile" '/^$/d;s/^ //;s/ \\$//;s/$/ :/' >> "$depfile"
+  rm -f "$tmpdepfile"
+  ;;
+
+msvisualcpp)
+  # Important note: in order to support this mode, a compiler *must*
+  # always write the preprocessed file to stdout.
+  "$@" || exit $?
+
+  # Remove the call to Libtool.
+  if test "$libtool" = yes; then
+    while test "X$1" != 'X--mode=compile'; do
+      shift
+    done
+    shift
+  fi
+
+  IFS=" "
+  for arg
+  do
+    case "$arg" in
+    -o)
+      shift
+      ;;
+    $object)
+      shift
+      ;;
+    "-Gm"|"/Gm"|"-Gi"|"/Gi"|"-ZI"|"/ZI")
+        set fnord "$@"
+        shift
+        shift
+        ;;
+    *)
+        set fnord "$@" "$arg"
+        shift
+        shift
+        ;;
+    esac
+  done
+  "$@" -E 2>/dev/null |
+  sed -n '/^#line [0-9][0-9]* "\([^"]*\)"/ s::\1:p' | $cygpath_u | sort -u > "$tmpdepfile"
+  rm -f "$depfile"
+  echo "$object : \\" > "$depfile"
+  sed < "$tmpdepfile" -n -e 's% %\\ %g' -e '/^\(.*\)$/ s::'"$tab"'\1 \\:p' >> "$depfile"
+  echo "$tab" >> "$depfile"
+  sed < "$tmpdepfile" -n -e 's% %\\ %g' -e '/^\(.*\)$/ s::\1\::p' >> "$depfile"
+  rm -f "$tmpdepfile"
+  ;;
+
+msvcmsys)
+  # This case exists only to let depend.m4 do its work.  It works by
+  # looking at the text of this script.  This case will never be run,
+  # since it is checked for above.
+  exit 1
+  ;;
+
+none)
+  exec "$@"
+  ;;
+
+*)
+  echo "Unknown depmode $depmode" 1>&2
+  exit 1
+  ;;
+esac
+
+exit 0
+
+# Local Variables:
+# mode: shell-script
+# sh-indentation: 2
+# eval: (add-hook 'write-file-hooks 'time-stamp)
+# time-stamp-start: "scriptversion="
+# time-stamp-format: "%:y-%02m-%02d.%02H"
+# time-stamp-time-zone: "UTC"
+# time-stamp-end: "; # UTC"
+# End:
diff --git a/scripts/functions b/scripts/functions
index 9440f0e..0b8fba5 100644
--- a/scripts/functions
+++ b/scripts/functions
@@ -985,18 +985,18 @@ CT_GetFile()
 # Two wrappers to call config.(guess|sub) either from CT_TOP_DIR or CT_LIB_DIR.
 # Those from CT_TOP_DIR, if they exist, will be be more recent than those from CT_LIB_DIR.
 CT_DoConfigGuess() {
-    if [ -x "${CT_TOP_DIR}/scripts/config.guess" ]; then
-        "${CT_TOP_DIR}/scripts/config.guess"
+    if [ -r "${CT_TOP_DIR}/scripts/config.guess" ]; then
+        "${CT_CONFIG_SHELL}" "${CT_TOP_DIR}/scripts/config.guess"
     else
-        "${CT_LIB_DIR}/scripts/config.guess"
+        "${CT_CONFIG_SHELL}" "${CT_LIB_DIR}/scripts/config.guess"
     fi
 }
 
 CT_DoConfigSub() {
-    if [ -x "${CT_TOP_DIR}/scripts/config.sub" ]; then
-        "${CT_TOP_DIR}/scripts/config.sub" "$@"
+    if [ -r "${CT_TOP_DIR}/scripts/config.sub" ]; then
+        "${CT_CONFIG_SHELL}" "${CT_TOP_DIR}/scripts/config.sub" "$@"
     else
-        "${CT_LIB_DIR}/scripts/config.sub" "$@"
+        "${CT_CONFIG_SHELL}" "${CT_LIB_DIR}/scripts/config.sub" "$@"
     fi
 }
 
@@ -2283,3 +2283,16 @@ CT_GetChoicePkgBuildVersion()
     eval "component=\${CT_${choice}_CHOICE_KSYM}"
     CT_GetPkgBuildVersion "${choice}" "${component}" "${var}"
 }
+
+# Finally, load paths.sh. For --enable-local build, it is located in
+# the current directory (CT_TOP_DIR) while the rest of the scripts are
+# in the source directory (CT_LIB_DIR). For other setups, paths.sh
+# is in CT_LIB_DIR.
+if [ -r "${CT_LIB_DIR}/paths.sh" ]; then
+    paths_sh_location="${CT_LIB_DIR}/paths.sh"
+elif [ -r "${CT_TOP_DIR}/paths.sh" ]; then
+    paths_sh_location="${CT_TOP_DIR}/paths.sh"
+else
+    CT_Error "Not found: paths.sh"
+fi
+. "${paths_sh_location}"
diff --git a/scripts/install-sh b/scripts/install-sh
index 6781b98..59990a1 100755
--- a/scripts/install-sh
+++ b/scripts/install-sh
@@ -1,7 +1,7 @@
 #!/bin/sh
 # install - install a program, script, or datafile
 
-scriptversion=2009-04-28.21; # UTC
+scriptversion=2014-09-12.12; # UTC
 
 # This originates from X11R5 (mit/util/scripts/install.sh), which was
 # later released in X11R6 (xc/config/util/install.sh) with the
@@ -35,25 +35,21 @@ scriptversion=2009-04-28.21; # UTC
 # FSF changes to this file are in the public domain.
 #
 # Calling this script install-sh is preferred over install.sh, to prevent
-# `make' implicit rules from creating a file called install from it
+# 'make' implicit rules from creating a file called install from it
 # when there is no Makefile.
 #
 # This script is compatible with the BSD install script, but was written
 # from scratch.
 
+tab='	'
 nl='
 '
-IFS=" ""	$nl"
+IFS=" $tab$nl"
 
-# set DOITPROG to echo to test this script
+# Set DOITPROG to "echo" to test this script.
 
-# Don't use :- since 4.3BSD and earlier shells don't like it.
 doit=${DOITPROG-}
-if test -z "$doit"; then
-  doit_exec=exec
-else
-  doit_exec=$doit
-fi
+doit_exec=${doit:-exec}
 
 # Put in absolute file names if you don't have them in your path;
 # or use environment vars.
@@ -68,17 +64,6 @@ mvprog=${MVPROG-mv}
 rmprog=${RMPROG-rm}
 stripprog=${STRIPPROG-strip}
 
-posix_glob='?'
-initialize_posix_glob='
-  test "$posix_glob" != "?" || {
-    if (set -f) 2>/dev/null; then
-      posix_glob=
-    else
-      posix_glob=:
-    fi
-  }
-'
-
 posix_mkdir=
 
 # Desired mode of installed file.
@@ -97,7 +82,7 @@ dir_arg=
 dst_arg=
 
 copy_on_change=false
-no_target_directory=
+is_target_a_directory=possibly
 
 usage="\
 Usage: $0 [OPTION]... [-T] SRCFILE DSTFILE
@@ -137,42 +122,57 @@ while test $# -ne 0; do
     -d) dir_arg=true;;
 
     -g) chgrpcmd="$chgrpprog $2"
-	shift;;
+        shift;;
 
     --help) echo "$usage"; exit $?;;
 
     -m) mode=$2
-	case $mode in
-	  *' '* | *'	'* | *'
-'*	  | *'*'* | *'?'* | *'['*)
-	    echo "$0: invalid mode: $mode" >&2
-	    exit 1;;
-	esac
-	shift;;
+        case $mode in
+          *' '* | *"$tab"* | *"$nl"* | *'*'* | *'?'* | *'['*)
+            echo "$0: invalid mode: $mode" >&2
+            exit 1;;
+        esac
+        shift;;
 
     -o) chowncmd="$chownprog $2"
-	shift;;
+        shift;;
 
     -s) stripcmd=$stripprog;;
 
-    -t) dst_arg=$2
-	shift;;
+    -t)
+        is_target_a_directory=always
+        dst_arg=$2
+        # Protect names problematic for 'test' and other utilities.
+        case $dst_arg in
+          -* | [=\(\)!]) dst_arg=./$dst_arg;;
+        esac
+        shift;;
 
-    -T) no_target_directory=true;;
+    -T) is_target_a_directory=never;;
 
     --version) echo "$0 $scriptversion"; exit $?;;
 
-    --)	shift
-	break;;
+    --) shift
+        break;;
 
-    -*)	echo "$0: invalid option: $1" >&2
-	exit 1;;
+    -*) echo "$0: invalid option: $1" >&2
+        exit 1;;
 
     *)  break;;
   esac
   shift
 done
 
+# We allow the use of options -d and -T together, by making -d
+# take the precedence; this is for compatibility with GNU install.
+
+if test -n "$dir_arg"; then
+  if test -n "$dst_arg"; then
+    echo "$0: target directory not allowed when installing a directory." >&2
+    exit 1
+  fi
+fi
+
 if test $# -ne 0 && test -z "$dir_arg$dst_arg"; then
   # When -d is used, all remaining arguments are directories to create.
   # When -t is used, the destination is already specified.
@@ -186,6 +186,10 @@ if test $# -ne 0 && test -z "$dir_arg$dst_arg"; then
     fi
     shift # arg
     dst_arg=$arg
+    # Protect names problematic for 'test' and other utilities.
+    case $dst_arg in
+      -* | [=\(\)!]) dst_arg=./$dst_arg;;
+    esac
   done
 fi
 
@@ -194,13 +198,26 @@ if test $# -eq 0; then
     echo "$0: no input file specified." >&2
     exit 1
   fi
-  # It's OK to call `install-sh -d' without argument.
+  # It's OK to call 'install-sh -d' without argument.
   # This can happen when creating conditional directories.
   exit 0
 fi
 
 if test -z "$dir_arg"; then
-  trap '(exit $?); exit' 1 2 13 15
+  if test $# -gt 1 || test "$is_target_a_directory" = always; then
+    if test ! -d "$dst_arg"; then
+      echo "$0: $dst_arg: Is not a directory." >&2
+      exit 1
+    fi
+  fi
+fi
+
+if test -z "$dir_arg"; then
+  do_exit='(exit $ret); exit $ret'
+  trap "ret=129; $do_exit" 1
+  trap "ret=130; $do_exit" 2
+  trap "ret=141; $do_exit" 13
+  trap "ret=143; $do_exit" 15
 
   # Set umask so as not to create temps with too-generous modes.
   # However, 'strip' requires both read and write access to temps.
@@ -211,16 +228,16 @@ if test -z "$dir_arg"; then
 
     *[0-7])
       if test -z "$stripcmd"; then
-	u_plus_rw=
+        u_plus_rw=
       else
-	u_plus_rw='% 200'
+        u_plus_rw='% 200'
       fi
       cp_umask=`expr '(' 777 - $mode % 1000 ')' $u_plus_rw`;;
     *)
       if test -z "$stripcmd"; then
-	u_plus_rw=
+        u_plus_rw=
       else
-	u_plus_rw=,u+rw
+        u_plus_rw=,u+rw
       fi
       cp_umask=$mode$u_plus_rw;;
   esac
@@ -228,9 +245,9 @@ fi
 
 for src
 do
-  # Protect names starting with `-'.
+  # Protect names problematic for 'test' and other utilities.
   case $src in
-    -*) src=./$src;;
+    -* | [=\(\)!]) src=./$src;;
   esac
 
   if test -n "$dir_arg"; then
@@ -252,51 +269,20 @@ do
       echo "$0: no destination specified." >&2
       exit 1
     fi
-
     dst=$dst_arg
-    # Protect names starting with `-'.
-    case $dst in
-      -*) dst=./$dst;;
-    esac
 
     # If destination is a directory, append the input filename; won't work
     # if double slashes aren't ignored.
     if test -d "$dst"; then
-      if test -n "$no_target_directory"; then
-	echo "$0: $dst_arg: Is a directory" >&2
-	exit 1
+      if test "$is_target_a_directory" = never; then
+        echo "$0: $dst_arg: Is a directory" >&2
+        exit 1
       fi
       dstdir=$dst
       dst=$dstdir/`basename "$src"`
       dstdir_status=0
     else
-      # Prefer dirname, but fall back on a substitute if dirname fails.
-      dstdir=`
-	(dirname "$dst") 2>/dev/null ||
-	expr X"$dst" : 'X\(.*[^/]\)//*[^/][^/]*/*$' \| \
-	     X"$dst" : 'X\(//\)[^/]' \| \
-	     X"$dst" : 'X\(//\)$' \| \
-	     X"$dst" : 'X\(/\)' \| . 2>/dev/null ||
-	echo X"$dst" |
-	    sed '/^X\(.*[^/]\)\/\/*[^/][^/]*\/*$/{
-		   s//\1/
-		   q
-		 }
-		 /^X\(\/\/\)[^/].*/{
-		   s//\1/
-		   q
-		 }
-		 /^X\(\/\/\)$/{
-		   s//\1/
-		   q
-		 }
-		 /^X\(\/\).*/{
-		   s//\1/
-		   q
-		 }
-		 s/.*/./; q'
-      `
-
+      dstdir=`dirname "$dst"`
       test -d "$dstdir"
       dstdir_status=$?
     fi
@@ -307,74 +293,81 @@ do
   if test $dstdir_status != 0; then
     case $posix_mkdir in
       '')
-	# Create intermediate dirs using mode 755 as modified by the umask.
-	# This is like FreeBSD 'install' as of 1997-10-28.
-	umask=`umask`
-	case $stripcmd.$umask in
-	  # Optimize common cases.
-	  *[2367][2367]) mkdir_umask=$umask;;
-	  .*0[02][02] | .[02][02] | .[02]) mkdir_umask=22;;
-
-	  *[0-7])
-	    mkdir_umask=`expr $umask + 22 \
-	      - $umask % 100 % 40 + $umask % 20 \
-	      - $umask % 10 % 4 + $umask % 2
-	    `;;
-	  *) mkdir_umask=$umask,go-w;;
-	esac
-
-	# With -d, create the new directory with the user-specified mode.
-	# Otherwise, rely on $mkdir_umask.
-	if test -n "$dir_arg"; then
-	  mkdir_mode=-m$mode
-	else
-	  mkdir_mode=
-	fi
-
-	posix_mkdir=false
-	case $umask in
-	  *[123567][0-7][0-7])
-	    # POSIX mkdir -p sets u+wx bits regardless of umask, which
-	    # is incompatible with FreeBSD 'install' when (umask & 300) != 0.
-	    ;;
-	  *)
-	    tmpdir=${TMPDIR-/tmp}/ins$RANDOM-$$
-	    trap 'ret=$?; rmdir "$tmpdir/d" "$tmpdir" 2>/dev/null; exit $ret' 0
-
-	    if (umask $mkdir_umask &&
-		exec $mkdirprog $mkdir_mode -p -- "$tmpdir/d") >/dev/null 2>&1
-	    then
-	      if test -z "$dir_arg" || {
-		   # Check for POSIX incompatibilities with -m.
-		   # HP-UX 11.23 and IRIX 6.5 mkdir -m -p sets group- or
-		   # other-writeable bit of parent directory when it shouldn't.
-		   # FreeBSD 6.1 mkdir -m -p sets mode of existing directory.
-		   ls_ld_tmpdir=`ls -ld "$tmpdir"`
-		   case $ls_ld_tmpdir in
-		     d????-?r-*) different_mode=700;;
-		     d????-?--*) different_mode=755;;
-		     *) false;;
-		   esac &&
-		   $mkdirprog -m$different_mode -p -- "$tmpdir" && {
-		     ls_ld_tmpdir_1=`ls -ld "$tmpdir"`
-		     test "$ls_ld_tmpdir" = "$ls_ld_tmpdir_1"
-		   }
-		 }
-	      then posix_mkdir=:
-	      fi
-	      rmdir "$tmpdir/d" "$tmpdir"
-	    else
-	      # Remove any dirs left behind by ancient mkdir implementations.
-	      rmdir ./$mkdir_mode ./-p ./-- 2>/dev/null
-	    fi
-	    trap '' 0;;
-	esac;;
+        # Create intermediate dirs using mode 755 as modified by the umask.
+        # This is like FreeBSD 'install' as of 1997-10-28.
+        umask=`umask`
+        case $stripcmd.$umask in
+          # Optimize common cases.
+          *[2367][2367]) mkdir_umask=$umask;;
+          .*0[02][02] | .[02][02] | .[02]) mkdir_umask=22;;
+
+          *[0-7])
+            mkdir_umask=`expr $umask + 22 \
+              - $umask % 100 % 40 + $umask % 20 \
+              - $umask % 10 % 4 + $umask % 2
+            `;;
+          *) mkdir_umask=$umask,go-w;;
+        esac
+
+        # With -d, create the new directory with the user-specified mode.
+        # Otherwise, rely on $mkdir_umask.
+        if test -n "$dir_arg"; then
+          mkdir_mode=-m$mode
+        else
+          mkdir_mode=
+        fi
+
+        posix_mkdir=false
+        case $umask in
+          *[123567][0-7][0-7])
+            # POSIX mkdir -p sets u+wx bits regardless of umask, which
+            # is incompatible with FreeBSD 'install' when (umask & 300) != 0.
+            ;;
+          *)
+            # $RANDOM is not portable (e.g. dash);  use it when possible to
+            # lower collision chance
+            tmpdir=${TMPDIR-/tmp}/ins$RANDOM-$$
+            trap 'ret=$?; rmdir "$tmpdir/a/b" "$tmpdir/a" "$tmpdir" 2>/dev/null; exit $ret' 0
+
+            # As "mkdir -p" follows symlinks and we work in /tmp possibly;  so
+            # create the $tmpdir first (and fail if unsuccessful) to make sure
+            # that nobody tries to guess the $tmpdir name.
+            if (umask $mkdir_umask &&
+                $mkdirprog $mkdir_mode "$tmpdir" &&
+                exec $mkdirprog $mkdir_mode -p -- "$tmpdir/a/b") >/dev/null 2>&1
+            then
+              if test -z "$dir_arg" || {
+                   # Check for POSIX incompatibilities with -m.
+                   # HP-UX 11.23 and IRIX 6.5 mkdir -m -p sets group- or
+                   # other-writable bit of parent directory when it shouldn't.
+                   # FreeBSD 6.1 mkdir -m -p sets mode of existing directory.
+                   test_tmpdir="$tmpdir/a"
+                   ls_ld_tmpdir=`ls -ld "$test_tmpdir"`
+                   case $ls_ld_tmpdir in
+                     d????-?r-*) different_mode=700;;
+                     d????-?--*) different_mode=755;;
+                     *) false;;
+                   esac &&
+                   $mkdirprog -m$different_mode -p -- "$test_tmpdir" && {
+                     ls_ld_tmpdir_1=`ls -ld "$test_tmpdir"`
+                     test "$ls_ld_tmpdir" = "$ls_ld_tmpdir_1"
+                   }
+                 }
+              then posix_mkdir=:
+              fi
+              rmdir "$tmpdir/a/b" "$tmpdir/a" "$tmpdir"
+            else
+              # Remove any dirs left behind by ancient mkdir implementations.
+              rmdir ./$mkdir_mode ./-p ./-- "$tmpdir" 2>/dev/null
+            fi
+            trap '' 0;;
+        esac;;
     esac
 
     if
       $posix_mkdir && (
-	umask $mkdir_umask &&
-	$doit_exec $mkdirprog $mkdir_mode -p -- "$dstdir"
+        umask $mkdir_umask &&
+        $doit_exec $mkdirprog $mkdir_mode -p -- "$dstdir"
       )
     then :
     else
@@ -384,53 +377,51 @@ do
       # directory the slow way, step by step, checking for races as we go.
 
       case $dstdir in
-	/*) prefix='/';;
-	-*) prefix='./';;
-	*)  prefix='';;
+        /*) prefix='/';;
+        [-=\(\)!]*) prefix='./';;
+        *)  prefix='';;
       esac
 
-      eval "$initialize_posix_glob"
-
       oIFS=$IFS
       IFS=/
-      $posix_glob set -f
+      set -f
       set fnord $dstdir
       shift
-      $posix_glob set +f
+      set +f
       IFS=$oIFS
 
       prefixes=
 
       for d
       do
-	test -z "$d" && continue
-
-	prefix=$prefix$d
-	if test -d "$prefix"; then
-	  prefixes=
-	else
-	  if $posix_mkdir; then
-	    (umask=$mkdir_umask &&
-	     $doit_exec $mkdirprog $mkdir_mode -p -- "$dstdir") && break
-	    # Don't fail if two instances are running concurrently.
-	    test -d "$prefix" || exit 1
-	  else
-	    case $prefix in
-	      *\'*) qprefix=`echo "$prefix" | sed "s/'/'\\\\\\\\''/g"`;;
-	      *) qprefix=$prefix;;
-	    esac
-	    prefixes="$prefixes '$qprefix'"
-	  fi
-	fi
-	prefix=$prefix/
+        test X"$d" = X && continue
+
+        prefix=$prefix$d
+        if test -d "$prefix"; then
+          prefixes=
+        else
+          if $posix_mkdir; then
+            (umask=$mkdir_umask &&
+             $doit_exec $mkdirprog $mkdir_mode -p -- "$dstdir") && break
+            # Don't fail if two instances are running concurrently.
+            test -d "$prefix" || exit 1
+          else
+            case $prefix in
+              *\'*) qprefix=`echo "$prefix" | sed "s/'/'\\\\\\\\''/g"`;;
+              *) qprefix=$prefix;;
+            esac
+            prefixes="$prefixes '$qprefix'"
+          fi
+        fi
+        prefix=$prefix/
       done
 
       if test -n "$prefixes"; then
-	# Don't fail if two instances are running concurrently.
-	(umask $mkdir_umask &&
-	 eval "\$doit_exec \$mkdirprog $prefixes") ||
-	  test -d "$dstdir" || exit 1
-	obsolete_mkdir_used=true
+        # Don't fail if two instances are running concurrently.
+        (umask $mkdir_umask &&
+         eval "\$doit_exec \$mkdirprog $prefixes") ||
+          test -d "$dstdir" || exit 1
+        obsolete_mkdir_used=true
       fi
     fi
   fi
@@ -465,15 +456,12 @@ do
 
     # If -C, don't bother to copy if it wouldn't change the file.
     if $copy_on_change &&
-       old=`LC_ALL=C ls -dlL "$dst"	2>/dev/null` &&
-       new=`LC_ALL=C ls -dlL "$dsttmp"	2>/dev/null` &&
-
-       eval "$initialize_posix_glob" &&
-       $posix_glob set -f &&
+       old=`LC_ALL=C ls -dlL "$dst"     2>/dev/null` &&
+       new=`LC_ALL=C ls -dlL "$dsttmp"  2>/dev/null` &&
+       set -f &&
        set X $old && old=:$2:$4:$5:$6 &&
        set X $new && new=:$2:$4:$5:$6 &&
-       $posix_glob set +f &&
-
+       set +f &&
        test "$old" = "$new" &&
        $cmpprog "$dst" "$dsttmp" >/dev/null 2>&1
     then
@@ -486,24 +474,24 @@ do
       # to itself, or perhaps because mv is so ancient that it does not
       # support -f.
       {
-	# Now remove or move aside any old file at destination location.
-	# We try this two ways since rm can't unlink itself on some
-	# systems and the destination file might be busy for other
-	# reasons.  In this case, the final cleanup might fail but the new
-	# file should still install successfully.
-	{
-	  test ! -f "$dst" ||
-	  $doit $rmcmd -f "$dst" 2>/dev/null ||
-	  { $doit $mvcmd -f "$dst" "$rmtmp" 2>/dev/null &&
-	    { $doit $rmcmd -f "$rmtmp" 2>/dev/null; :; }
-	  } ||
-	  { echo "$0: cannot unlink or rename $dst" >&2
-	    (exit 1); exit 1
-	  }
-	} &&
-
-	# Now rename the file to the real destination.
-	$doit $mvcmd "$dsttmp" "$dst"
+        # Now remove or move aside any old file at destination location.
+        # We try this two ways since rm can't unlink itself on some
+        # systems and the destination file might be busy for other
+        # reasons.  In this case, the final cleanup might fail but the new
+        # file should still install successfully.
+        {
+          test ! -f "$dst" ||
+          $doit $rmcmd -f "$dst" 2>/dev/null ||
+          { $doit $mvcmd -f "$dst" "$rmtmp" 2>/dev/null &&
+            { $doit $rmcmd -f "$rmtmp" 2>/dev/null; :; }
+          } ||
+          { echo "$0: cannot unlink or rename $dst" >&2
+            (exit 1); exit 1
+          }
+        } &&
+
+        # Now rename the file to the real destination.
+        $doit $mvcmd "$dsttmp" "$dst"
       }
     fi || exit 1
 
diff --git a/scripts/ltmain.sh b/scripts/ltmain.sh
new file mode 100644
index 0000000..fb43c68
--- /dev/null
+++ b/scripts/ltmain.sh
@@ -0,0 +1,4 @@
+# Dummy: crosstool-NG currently does not use libtool itself, it just checks
+# its presense/version for the build time... Should be checked at the 'ct-ng build'
+# time as well then.
+:
diff --git a/scripts/missing b/scripts/missing
new file mode 100755
index 0000000..f62bbae
--- /dev/null
+++ b/scripts/missing
@@ -0,0 +1,215 @@
+#! /bin/sh
+# Common wrapper for a few potentially missing GNU programs.
+
+scriptversion=2013-10-28.13; # UTC
+
+# Copyright (C) 1996-2014 Free Software Foundation, Inc.
+# Originally written by Fran,cois Pinard <pinard@iro.umontreal.ca>, 1996.
+
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2, or (at your option)
+# any later version.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+# As a special exception to the GNU General Public License, if you
+# distribute this file as part of a program that contains a
+# configuration script generated by Autoconf, you may include it under
+# the same distribution terms that you use for the rest of that program.
+
+if test $# -eq 0; then
+  echo 1>&2 "Try '$0 --help' for more information"
+  exit 1
+fi
+
+case $1 in
+
+  --is-lightweight)
+    # Used by our autoconf macros to check whether the available missing
+    # script is modern enough.
+    exit 0
+    ;;
+
+  --run)
+    # Back-compat with the calling convention used by older automake.
+    shift
+    ;;
+
+  -h|--h|--he|--hel|--help)
+    echo "\
+$0 [OPTION]... PROGRAM [ARGUMENT]...
+
+Run 'PROGRAM [ARGUMENT]...', returning a proper advice when this fails due
+to PROGRAM being missing or too old.
+
+Options:
+  -h, --help      display this help and exit
+  -v, --version   output version information and exit
+
+Supported PROGRAM values:
+  aclocal   autoconf  autoheader   autom4te  automake  makeinfo
+  bison     yacc      flex         lex       help2man
+
+Version suffixes to PROGRAM as well as the prefixes 'gnu-', 'gnu', and
+'g' are ignored when checking the name.
+
+Send bug reports to <bug-automake@gnu.org>."
+    exit $?
+    ;;
+
+  -v|--v|--ve|--ver|--vers|--versi|--versio|--version)
+    echo "missing $scriptversion (GNU Automake)"
+    exit $?
+    ;;
+
+  -*)
+    echo 1>&2 "$0: unknown '$1' option"
+    echo 1>&2 "Try '$0 --help' for more information"
+    exit 1
+    ;;
+
+esac
+
+# Run the given program, remember its exit status.
+"$@"; st=$?
+
+# If it succeeded, we are done.
+test $st -eq 0 && exit 0
+
+# Also exit now if we it failed (or wasn't found), and '--version' was
+# passed; such an option is passed most likely to detect whether the
+# program is present and works.
+case $2 in --version|--help) exit $st;; esac
+
+# Exit code 63 means version mismatch.  This often happens when the user
+# tries to use an ancient version of a tool on a file that requires a
+# minimum version.
+if test $st -eq 63; then
+  msg="probably too old"
+elif test $st -eq 127; then
+  # Program was missing.
+  msg="missing on your system"
+else
+  # Program was found and executed, but failed.  Give up.
+  exit $st
+fi
+
+perl_URL=http://www.perl.org/
+flex_URL=http://flex.sourceforge.net/
+gnu_software_URL=http://www.gnu.org/software
+
+program_details ()
+{
+  case $1 in
+    aclocal|automake)
+      echo "The '$1' program is part of the GNU Automake package:"
+      echo "<$gnu_software_URL/automake>"
+      echo "It also requires GNU Autoconf, GNU m4 and Perl in order to run:"
+      echo "<$gnu_software_URL/autoconf>"
+      echo "<$gnu_software_URL/m4/>"
+      echo "<$perl_URL>"
+      ;;
+    autoconf|autom4te|autoheader)
+      echo "The '$1' program is part of the GNU Autoconf package:"
+      echo "<$gnu_software_URL/autoconf/>"
+      echo "It also requires GNU m4 and Perl in order to run:"
+      echo "<$gnu_software_URL/m4/>"
+      echo "<$perl_URL>"
+      ;;
+  esac
+}
+
+give_advice ()
+{
+  # Normalize program name to check for.
+  normalized_program=`echo "$1" | sed '
+    s/^gnu-//; t
+    s/^gnu//; t
+    s/^g//; t'`
+
+  printf '%s\n' "'$1' is $msg."
+
+  configure_deps="'configure.ac' or m4 files included by 'configure.ac'"
+  case $normalized_program in
+    autoconf*)
+      echo "You should only need it if you modified 'configure.ac',"
+      echo "or m4 files included by it."
+      program_details 'autoconf'
+      ;;
+    autoheader*)
+      echo "You should only need it if you modified 'acconfig.h' or"
+      echo "$configure_deps."
+      program_details 'autoheader'
+      ;;
+    automake*)
+      echo "You should only need it if you modified 'Makefile.am' or"
+      echo "$configure_deps."
+      program_details 'automake'
+      ;;
+    aclocal*)
+      echo "You should only need it if you modified 'acinclude.m4' or"
+      echo "$configure_deps."
+      program_details 'aclocal'
+      ;;
+   autom4te*)
+      echo "You might have modified some maintainer files that require"
+      echo "the 'autom4te' program to be rebuilt."
+      program_details 'autom4te'
+      ;;
+    bison*|yacc*)
+      echo "You should only need it if you modified a '.y' file."
+      echo "You may want to install the GNU Bison package:"
+      echo "<$gnu_software_URL/bison/>"
+      ;;
+    lex*|flex*)
+      echo "You should only need it if you modified a '.l' file."
+      echo "You may want to install the Fast Lexical Analyzer package:"
+      echo "<$flex_URL>"
+      ;;
+    help2man*)
+      echo "You should only need it if you modified a dependency" \
+           "of a man page."
+      echo "You may want to install the GNU Help2man package:"
+      echo "<$gnu_software_URL/help2man/>"
+    ;;
+    makeinfo*)
+      echo "You should only need it if you modified a '.texi' file, or"
+      echo "any other file indirectly affecting the aspect of the manual."
+      echo "You might want to install the Texinfo package:"
+      echo "<$gnu_software_URL/texinfo/>"
+      echo "The spurious makeinfo call might also be the consequence of"
+      echo "using a buggy 'make' (AIX, DU, IRIX), in which case you might"
+      echo "want to install GNU make:"
+      echo "<$gnu_software_URL/make/>"
+      ;;
+    *)
+      echo "You might have modified some files without having the proper"
+      echo "tools for further handling them.  Check the 'README' file, it"
+      echo "often tells you about the needed prerequisites for installing"
+      echo "this package.  You may also peek at any GNU archive site, in"
+      echo "case some other package contains this missing '$1' program."
+      ;;
+  esac
+}
+
+give_advice "$1" | sed -e '1s/^/WARNING: /' \
+                       -e '2,$s/^/         /' >&2
+
+# Propagate the correct exit status (expected to be 127 for a program
+# not found, 63 for a program that failed due to version mismatch).
+exit $st
+
+# Local variables:
+# eval: (add-hook 'write-file-hooks 'time-stamp)
+# time-stamp-start: "scriptversion="
+# time-stamp-format: "%:y-%02m-%02d.%02H"
+# time-stamp-time-zone: "UTC"
+# time-stamp-end: "; # UTC"
+# End:
diff --git a/scripts/saveSample.sh.in b/scripts/saveSample.sh
index 5fab6d9..2f4a10b 100644
--- a/scripts/saveSample.sh.in
+++ b/scripts/saveSample.sh
@@ -7,7 +7,6 @@
 #  - info about who reported the sample
 
 # Parse the tools' paths configuration
-. "${CT_LIB_DIR}/paths.sh"
 . "${CT_LIB_DIR}/scripts/functions"
 
 CT_LoadConfig
diff --git a/scripts/scripts.mk.in b/scripts/scripts.mk
index 99b9d76..d77f1a7 100644
--- a/scripts/scripts.mk.in
+++ b/scripts/scripts.mk
@@ -31,11 +31,11 @@ ifneq ($(strip $(V)),2)
   curl_silent_opt = --silent
 endif
 
-ifneq (@@CT_wget@@,)
-download_cmd = wget --passive-ftp $(wget_silent_opt) -O $@
+ifneq ($(CT_wget),)
+download_cmd = $(CT_wget) --passive-ftp $(wget_silent_opt) -O $@
 else
-ifneq (@@CT_curl@@,)
-download_cmd = curl --ftp-pasv $(curl_silent_opt) -o $@
+ifneq ($(CT_curl),)
+download_cmd = $(CT_curl) --ftp-pasv $(curl_silent_opt) -o $@
 else
 download_cmd = $(error wget or curl needed for downloads)
 endif
diff --git a/scripts/show-config.sh b/scripts/show-config.sh
index 9e56f07..7112269 100644
--- a/scripts/show-config.sh
+++ b/scripts/show-config.sh
@@ -2,7 +2,6 @@
 # the versions of the main tools
 
 # Use tools discovered by ./configure
-. "${CT_LIB_DIR}/paths.sh"
 . "${CT_LIB_DIR}/scripts/functions"
 
 [ "$1" = "-v" ] && opt="$1" && shift
diff --git a/scripts/show-tuple.sh b/scripts/show-tuple.sh
index 9031b3c..4b0b9b0 100644
--- a/scripts/show-tuple.sh
+++ b/scripts/show-tuple.sh
@@ -1,9 +1,6 @@
 # What we need:
 #  - the .config file
 
-# Parse the tools' paths configuration
-. "${CT_LIB_DIR}/paths.sh"
-
 # Parse the common functions
 . "${CT_LIB_DIR}/scripts/functions"
 
diff --git a/steps.mk b/steps.mk
deleted file mode 100644
index e3c4874..0000000
--- a/steps.mk
+++ /dev/null
@@ -1,69 +0,0 @@
-# Makefile for each steps
-# Copyright 2006 Yann E. MORIN <yann.morin.1998@free.fr>
-
-# ----------------------------------------------------------
-# This is the steps help entry
-
-help-build::
-	@echo  '  list-steps         - List all build steps'
-
-help-env::
-	@echo  '  STOP=step          - Stop the build just after this step (list with list-steps)'
-	@echo  '  RESTART=step       - Restart the build just before this step (list with list-steps)'
-
-# ----------------------------------------------------------
-# The steps list
-
-# The _for_build steps are noop for native and cross,
-# but are actual steps for canadian and cross-native.
-# Please keep the last line with a '\' and keep the following empty line:
-# it helps when diffing and merging.
-CT_STEPS := \
-            companion_tools_for_build  \
-            companion_libs_for_build   \
-            binutils_for_build         \
-            companion_tools_for_host   \
-            companion_libs_for_host    \
-            binutils_for_host          \
-            cc_core_pass_1             \
-            kernel_headers             \
-            libc_start_files           \
-            cc_core_pass_2             \
-            libc                       \
-            cc_for_build               \
-            cc_for_host                \
-            libc_post_cc               \
-            companion_libs_for_target  \
-            binutils_for_target        \
-            debug                      \
-            test_suite                 \
-            finish                     \
-
-# Keep an empty line above this comment, so the last
-# back-slash terminated line works as expected.
-
-# Make the list available to sub-processes (scripts/crosstool-NG.sh needs it)
-export CT_STEPS
-
-# Print the steps list
-PHONY += list-steps
-list-steps:
-	@echo  'Available build steps, in order:'
-	@for step in $(CT_STEPS); do    \
-	     echo "  - $${step}";       \
-	 done
-	@echo  'Use "<step>" as action to execute only that step.'
-	@echo  'Use "+<step>" as action to execute up to that step.'
-	@echo  'Use "<step>+" as action to execute from that step onward.'
-
-# ----------------------------------------------------------
-# This part deals with executing steps
-
-$(CT_STEPS):
-	$(SILENT)$(MAKE) -rf $(CT_NG) V=$(V) RESTART=$@ STOP=$@ build
-
-$(patsubst %,+%,$(CT_STEPS)):
-	$(SILENT)$(MAKE) -rf $(CT_NG) V=$(V) STOP=$(patsubst +%,%,$@) build
-
-$(patsubst %,%+,$(CT_STEPS)):
-	$(SILENT)$(MAKE) -rf $(CT_NG) V=$(V) RESTART=$(patsubst %+,%,$@) build