# 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' )
ifeq ($(filter Rr,$(MAKEFLAGS)),)
ifeq ($(filter -Rr,$(MAKEFLAGS)),)
CT_MAKEFLAGS += -Rr
endif # No -Rr
endif # No Rr

# Remove any suffix rules
.SUFFIXES:

all: Makefile build

###############################################################################
# Configuration variables

VERSION:= @@VERSION@@
BINDIR := @@BINDIR@@
LIBDIR := @@LIBDIR@@
DOCDIR := @@DOCDIR@@
MANDIR := @@MANDIR@@
DATE   := @@DATE@@
LOCAL  := @@LOCAL@@

# Paths found by ./configure
install:= @@install@@
bash   := @@bash@@
grep   := @@grep@@
make   := @@make@@
sed    := @@sed@@
libtool:= @@libtool@@
objcopy:= @@objcopy@@
objdump:= @@objdump@@
readelf:= @@readelf@@
patch  := @@patch@@

###############################################################################
# Non-configure variables
MAN_SECTION := 1
MAN_SUBDIR := /man$(MAN_SECTION)

###############################################################################
# Sanity checks

# Check if Makefile is up to date:
Makefile: Makefile.in
	@echo "$< did changed: you must re-run './configure'"
	@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)),)

MAKEFLAGS += $(CT_MAKEFLAGS)
build install clean distclean uninstall:
	@$(MAKE) $@

else
# There were no additional MAKEFLAGS to add, do the job

TARGETS := bin lib doc man

build: $(patsubst %,build-%,$(TARGETS))

install: build real-install

clean: $(patsubst %,clean-%,$(TARGETS))

distclean: clean
	@echo "  RM     'Makefile'"
	@rm -f Makefile

uninstall: real-uninstall

###############################################################################
# Specific make rules

#--------------------------------------
# Build rules

build-bin: ct-ng scripts/crosstool-NG.sh scripts/saveSample.sh scripts/showTuple.sh
	@chmod 755 $^

build-lib: paths.mk

build-doc:

build-man: docs/ct-ng.1.gz

docs/ct-ng.1.gz: docs/ct-ng.1
	@echo "  GZIP   '$@'"
	@gzip -c9 $< >$@

%: %.in Makefile
	@echo "  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_VERSION@@,$(VERSION),g;'	\
	           -e 's,@@CT_DATE@@,$(DATE),g;'        \
	           -e 's,@@CT_make@@,$(make),g;'        \
	           -e 's,@@CT_bash@@,$(bash),g;'        \
	           $@.in >$@

# We create a script fragment that is parseable from inside a Makefile,
# but also from inside a shell script, hence the reason why we don't
# use := to set variables, although that will incur a (very small)
# penalty from the Makefile that includes it (due to re-evaluation at
# each call).
paths.mk:
	@echo "  GEN    '$@'"
	@(echo "export install=$(install)"; \
	  echo "export bash=$(bash)";       \
	  echo "export grep=$(grep)";       \
	  echo "export make=$(make)";       \
	  echo "export sed=$(sed)";         \
	  echo "export libtool=$(libtool)"; \
	  echo "export objcopy=$(objcopy)"; \
	  echo "export objdump=$(objdump)"; \
	  echo "export readelf=$(readelf)"; \
	  echo "export patch=$(patch)";     \
	 ) >paths.mk

#--------------------------------------
# Clean rules

clean-bin:
	@echo "  RM     'ct-ng'"
	@rm -f ct-ng
	@echo "  RM     'scripts/crosstool-NG.sh'"
	@rm -f scripts/crosstool-NG.sh
	@echo "  RM     'scripts/saveSample.sh'"
	@rm -f scripts/saveSample.sh
	@echo "  RM     'scripts/showTuple.sh'"
	@rm -f scripts/showTuple.sh

clean-lib:
	@echo "  RM     'paths.mk'"
	@rm -f paths.mk

clean-doc:

clean-man:
	@echo "  RM     'docs/ct-ng.1'"
	@rm -f docs/ct-ng.1
	@echo "  RM     'docs/ct-ng.1.gz'"
	@rm -f docs/ct-ng.1.gz

#--------------------------------------
# Check for --local setup

ifeq ($(strip $(LOCAL)),y)

real-install:
	@true

real-uninstall:
	@true

else

#--------------------------------------
# Install rules

real-install: $(patsubst %,install-%,$(TARGETS)) install-post

install-bin: $(DESTDIR)$(BINDIR)
	@echo "  INST    'ct-ng'"
	@$(install) -m 755 ct-ng "$(DESTDIR)$(BINDIR)/ct-ng"

# 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 simpler to remove the whole lib/ directory, as it
# is the goal of the install-lib rule to install the lib/ directory...
install-lib: uninstall-lib $(DESTDIR)$(LIBDIR) install-lib-main install-lib-samples

LIB_SUB_DIR := config contrib kconfig patches scripts
$(patsubst %,install-lib-%-copy,$(LIB_SUB_DIR)): $(DESTDIR)$(LIBDIR)
	@echo "  INSTDIR '$(patsubst install-lib-%-copy,%,$(@))/'"
	@tar cf - --exclude='*.sh.in' $(patsubst install-lib-%-copy,%,$(@)) \
	 |(cd "$(DESTDIR)$(LIBDIR)"; tar xf -)

# Huh? It seems we need at least one command to make this rule kick-in.
install-lib-%: install-lib-%-copy; @true

# Huh? that one does not inherit the -opy dependency, above...
install-lib-scripts: install-lib-scripts-copy
	@chmod a+x $(DESTDIR)$(LIBDIR)/scripts/crosstool-NG.sh
	@chmod a+x $(DESTDIR)$(LIBDIR)/scripts/saveSample.sh
	@rm -f "$(DESTDIR)$(LIBDIR)/scripts/addToolVersion.sh"

install-lib-main: $(DESTDIR)$(LIBDIR) $(patsubst %,install-lib-%,$(LIB_SUB_DIR))
	@echo "  INST    'steps.mk'"
	@$(install) -m 644 steps.mk "$(DESTDIR)$(LIBDIR)/steps.mk"
	@echo "  INST    'paths.mk'"
	@$(install) -m 644 paths.mk "$(DESTDIR)$(LIBDIR)/paths.mk"

# Samples need a little love:
#  - change every occurrence of CT_TOP_DIR to CT_LIB_DIR
install-lib-samples: $(DESTDIR)$(LIBDIR) install-lib-main
	@echo "  INSTDIR 'samples/'"
	@tar cf - samples |(cd "$(DESTDIR)$(LIBDIR)"; tar xf -)
	@for samp_file in "$(DESTDIR)$(LIBDIR)/samples/"*"/crosstool.config"; do                    \
	     $(sed) -r -i -e 's,\$$\{CT_TOP_DIR\},\$$\{CT_LIB_DIR\},g;' $${samp_file};           \
	     $(sed) -r -i -e 's,^(CT_WORK_DIR)=.*,\1="\$${CT_TOP_DIR}/targets",;' $${samp_file}; \
	 done

install-doc: $(DESTDIR)$(DOCDIR)
	@for doc_file in docs/CREDITS docs/overview.txt; do             \
	     echo "  INST    '$${doc_file}'";                           \
	     $(install) -m 644 "$${doc_file}" "$(DESTDIR)$(DOCDIR)"; \
	 done

install-man: $(DESTDIR)$(MANDIR)$(MAN_SUBDIR)
	@echo "  INST    'ct-ng.1.gz'"
	@$(install) -m 644 docs/ct-ng.1.gz "$(DESTDIR)$(MANDIR)$(MAN_SUBDIR)"

$(sort $(DESTDIR)$(BINDIR) $(DESTDIR)$(LIBDIR) $(DESTDIR)$(DOCDIR) $(DESTDIR)$(MANDIR)$(MAN_SUBDIR)):
	@echo "  MKDIR   '$@/'"
	@$(install) -m 755 -d "$@"

install-post:
	@echo
	@echo "For auto-completion, do not forget to install 'ct-ng.comp' into"
	@echo "your bash completion directory (usually /etc/bash_completion.d)"

#--------------------------------------
# Uninstall rules

real-uninstall: $(patsubst %,uninstall-%,$(TARGETS))

uninstall-bin:
	@echo "  RM      '$(DESTDIR)$(BINDIR)/ct-ng'"
	@rm -f "$(DESTDIR)$(BINDIR)/ct-ng"

uninstall-lib:
	@echo "  RMDIR   '$(DESTDIR)$(LIBDIR)/'"
	@rm -rf "$(DESTDIR)$(LIBDIR)"

uninstall-doc:
	@echo "  RMDIR   '$(DESTDIR)$(DOCDIR)/'"
	@rm -rf "$(DESTDIR)$(DOCDIR)"

uninstall-man:
	@echo "  RM      '$(DESTDIR)$(MANDIR)/ct-ng.1.gz'"
	@rm -f "$(DESTDIR)$(MANDIR)/ct-ng.1"{,.gz}

endif # Not --local

endif # No extra MAKEFLAGS were added