Fix samples using GMP 4.3.2.

Some older versions of configure (including the one in GMP 4.3.2)
interpret the $ECHO environment variable as the `echo' utility to
use. CT-NG sets the variable to `:' and exports it if V=0 or V=1
is supplied, breaking the samples using such configure. This currently
includes bfin-unknown-linux-uclibc and powerpc-unknown-linux-uclibc.

Also, correct the description of the V= variable - V=0 is *not* the
default; in fact, default does not correspond to any of the V=[012]
values.

Signed-off-by: Alexey Neyman <stilor@att.net>

5 files changed, 33 insertions, 32 deletions

diff --git a/config/config.mk b/config/config.mk
index 8cc2b15..669e157 100644
--- a/config/config.mk
+++ b/config/config.mk
@@ -50,12 +50,12 @@ config_files: $(STATIC_CONFIG_FILES) $(GEN_CONFIG_FILES)
 
 # Where to access to the source config files from
 config:
-	@$(ECHO) "  LN    config"
+	@$(CT_ECHO) "  LN    config"
 	$(SILENT)ln -s $(CT_LIB_DIR)/config config
 
 # Where to store the generated config files into
 config.gen:
-	@$(ECHO) "  MKDIR config.gen"
+	@$(CT_ECHO) "  MKDIR config.gen"
 	$(SILENT)mkdir -p config.gen
 
 #-----------------------------------------------------------
@@ -74,34 +74,34 @@ DEBUGS    = $(patsubst config/debug/%.in,%,$(DEBUG_CONFIG_FILES))
 # WARNING! If a .in file disapears between two runs, that will NOT be detected!
 
 config.gen/arch.in: $(ARCH_CONFIG_FILES) $(ARCH_CONFIG_FILES_2)
-	@$(ECHO) '  IN    $(@)'
+	@$(CT_ECHO) '  IN    $(@)'
 	$(SILENT)$(CT_LIB_DIR)/scripts/gen_in_frags.sh choice "$@" "Target Architecture" "ARCH" "config/arch" "Y" $(ARCHS)
 
 config.gen/kernel.in: $(KERNEL_CONFIG_FILES) $(KERNEL_CONFIG_FILES_2)
-	@$(ECHO) '  IN    $(@)'
+	@$(CT_ECHO) '  IN    $(@)'
 	$(SILENT)$(CT_LIB_DIR)/scripts/gen_in_frags.sh choice "$@" "Target OS" "KERNEL" "config/kernel" "Y" $(KERNELS)
 
 config.gen/cc.in: $(CC_CONFIG_FILES) $(CC_CONFIG_FILES_2)
-	@$(ECHO) '  IN    $(@)'
+	@$(CT_ECHO) '  IN    $(@)'
 	$(SILENT)$(CT_LIB_DIR)/scripts/gen_in_frags.sh choice "$@" "C compiler" "CC" "config/cc" "N" $(CCS)
 
 config.gen/binutils.in: $(CC_BINUTILS_FILES) $(CC_BINUTILS_FILES_2)
-	@$(ECHO) '  IN    $(@)'
+	@$(CT_ECHO) '  IN    $(@)'
 	$(SILENT)$(CT_LIB_DIR)/scripts/gen_in_frags.sh choice "$@" "Binutils" "BINUTILS" "config/binutils" "N" $(BINUTILSS)
 
 config.gen/libc.in: $(LIBC_CONFIG_FILES) $(LIBC_CONFIG_FILES_2)
-	@$(ECHO) '  IN    $(@)'
+	@$(CT_ECHO) '  IN    $(@)'
 	$(SILENT)$(CT_LIB_DIR)/scripts/gen_in_frags.sh choice "$@" "C library" "LIBC" "config/libc" "Y" $(LIBCS)
 
 config.gen/debug.in: $(DEBUG_CONFIG_FILES)
-	@$(ECHO) '  IN    $(@)'
+	@$(CT_ECHO) '  IN    $(@)'
 	$(SILENT)$(CT_LIB_DIR)/scripts/gen_in_frags.sh menu "$@" "Debug facilities" "DEBUG" "config/debug" $(DEBUGS)
 
 #-----------------------------------------------------------
 # Cleaning up the mess...
 
 clean::
-	@$(ECHO) "  CLEAN config"
+	@$(CT_ECHO) "  CLEAN config"
 	$(SILENT)rm -f config 2>/dev/null || true
-	@$(ECHO) "  CLEAN config.gen"
+	@$(CT_ECHO) "  CLEAN config.gen"
 	$(SILENT)rm -rf config.gen
diff --git a/ct-ng.in b/ct-ng.in
index a056894..fee97c8 100644
--- a/ct-ng.in
+++ b/ct-ng.in
@@ -41,24 +41,24 @@ export CT_STOP:=$(STOP)
 export CT_RESTART:=$(RESTART)
 
 SILENT=@
-ECHO=echo
+CT_ECHO=echo
 ifeq ($(strip $(origin V)),command line)
   ifeq ($(strip $(V)),0)
     SILENT=@
-    ECHO=:
+    CT_ECHO=:
   else
     ifeq ($(strip $(V)),1)
       SILENT=
-      ECHO=:
+      CT_ECHO=:
     else
       ifeq ($(strip $(V)),2)
         SILENT=
-        ECHO=echo
+        CT_ECHO=echo
       endif # V == 2
     endif # V== 1
   endif # V == 0
 endif # origin V
-export V SILENT ECHO
+export V SILENT CT_ECHO
 
 all: help
 
@@ -122,7 +122,8 @@ help-config::
 help-distrib::
 
 help-env::
-	@echo  '  V=0|1|2            - 0 => show only human-readable messages (default)'
+	@echo  '  V=0|1|2|<unset>    - <unset> show only human-readable messages (default)'
+	@echo  '                       0 => do not show commands or human-readable message'
 	@echo  '                       1 => show only the commands being executed'
 	@echo  '                       2 => show both'
 
@@ -161,14 +162,14 @@ version:
 
 PHONY += clean
 clean::
-	@$(ECHO) "  CLEAN log"
+	@$(CT_ECHO) "  CLEAN log"
 	$(SILENT)rm -f build.log
-	@$(ECHO) "  CLEAN build dir"
+	@$(CT_ECHO) "  CLEAN build dir"
 	$(SILENT)[ ! -d targets ] || chmod -R u+w targets
 	$(SILENT)[ ! -d .build  ] || chmod -R u+w .build
 	$(SILENT)rm -rf targets .build .build-all
 
 PHONY += distclean
 distclean:: clean
-	@$(ECHO) "  CLEAN .config"
+	@$(CT_ECHO) "  CLEAN .config"
 	$(SILENT)rm -f .config .config.* ..config*
diff --git a/kconfig/kconfig.mk b/kconfig/kconfig.mk
index f59de5a..3d330b4 100644
--- a/kconfig/kconfig.mk
+++ b/kconfig/kconfig.mk
@@ -21,23 +21,23 @@ MCONF := $(CT_LIB_DIR)/kconfig/mconf
 NCONF := $(CT_LIB_DIR)/kconfig/nconf
 
 menuconfig:
-	@$(ECHO) "  CONF  $(KCONFIG_TOP)"
+	@$(CT_ECHO) "  CONF  $(KCONFIG_TOP)"
 	$(SILENT)$(MCONF) $(KCONFIG_TOP)
 
 nconfig:
-	@$(ECHO) "  CONF  $(KCONFIG_TOP)"
+	@$(CT_ECHO) "  CONF  $(KCONFIG_TOP)"
 	$(SILENT)$(NCONF) $(KCONFIG_TOP)
 
 oldconfig: .config
-	@$(ECHO) "  CONF  $(KCONFIG_TOP)"
+	@$(CT_ECHO) "  CONF  $(KCONFIG_TOP)"
 	$(SILENT)$(CONF) --silent$@ $(KCONFIG_TOP)
 
 savedefconfig: .config
-	@$(ECHO) '  GEN   $@'
+	@$(CT_ECHO) '  GEN   $@'
 	$(SILENT)$(CONF) --savedefconfig=$${DEFCONFIG-defconfig} $(KCONFIG_TOP)
 
 defconfig:
-	@$(ECHO) '  CONF  $@'
+	@$(CT_ECHO) '  CONF  $@'
 	$(SILENT)$(CONF) --defconfig=$${DEFCONFIG-defconfig} $(KCONFIG_TOP)
 
 # Always be silent, the stdout an be >.config
diff --git a/samples/samples.mk b/samples/samples.mk
index 7f5a36c..e9730de 100644
--- a/samples/samples.mk
+++ b/samples/samples.mk
@@ -117,7 +117,7 @@ $(patsubst %,wiki-%,$(CT_SAMPLES)): config_files
 
 PHONY += samples
 samples:
-	@$(ECHO) '  MKDIR $@'
+	@$(CT_ECHO) '  MKDIR $@'
 	$(SILENT)mkdir -p $@
 
 # Save a sample
@@ -133,7 +133,7 @@ endef
 # How we do recall one sample
 PHONY += $(CT_SAMPLES)
 $(CT_SAMPLES): config_files
-	@$(ECHO) "  CONF  $(KCONFIG_TOP)"
+	@$(CT_ECHO) "  CONF  $(KCONFIG_TOP)"
 	$(SILENT)$(CONF) --defconfig=$(call sample_dir,$@)/crosstool.config $(KCONFIG_TOP)
 	@echo
 	@echo  '***********************************************************'
@@ -176,7 +176,7 @@ host_triplet = $(if $(findstring $(__comma),$(1)),$(firstword $(subst $(__comma)
 # Create the rule to build a sample
 # $1: sample name (target tuple, or host/target tuples separated by a comma)
 define build_sample
-	@$(ECHO) '  CONF  $(1)'
+	@$(CT_ECHO) '  CONF  $(1)'
 	$(SILENT)$(CONF) -s --defconfig=$(call sample_dir,$(1))/crosstool.config $(KCONFIG_TOP)
 	$(SILENT)$(sed) -i -r -e 's:^(CT_PREFIX_DIR=).*$$:\1"$(call prefix_dir,$(1))":;' .config
 	$(SILENT)$(sed) -i -r -e 's:^.*(CT_LOG_(WARN|INFO|EXTRA|DEBUG|ALL)).*$$:# \1 is not set:;' .config
@@ -185,7 +185,7 @@ define build_sample
 	$(SILENT)$(sed) -i -r -e 's:^.*(CT_LOG_TO_FILE).*$$:\1=y:;' .config
 	$(SILENT)$(sed) -i -r -e 's:^.*(CT_LOG_PROGRESS_BAR).*$$:\1=y:;' .config
 	$(SILENT)$(CONF) -s --oldconfig $(KCONFIG_TOP)
-	@$(ECHO) '  BUILD $(1)'
+	@$(CT_ECHO) '  BUILD $(1)'
 	$(SILENT)if [ ! -z "$(call host_triplet,$(1))" -a -d "$(call prefix_dir,$(call host_triplet,$(1)))" ]; then \
 		PATH="$$PATH:$(call prefix_dir,$(call host_triplet,$(1)))/bin"; \
 	fi; \
diff --git a/scripts/scripts.mk b/scripts/scripts.mk
index 8373f9b..77368a7 100644
--- a/scripts/scripts.mk
+++ b/scripts/scripts.mk
@@ -33,16 +33,16 @@ endif
 
 PHONY += scripts
 scripts:
-	@$(ECHO) '  MKDIR $@'
+	@$(CT_ECHO) '  MKDIR $@'
 	$(SILENT)mkdir -p $@
 
 $(CONFIG_SUB_DEST): scripts FORCE
-	@$(ECHO) '  WGET  $@'
+	@$(CT_ECHO) '  WGET  $@'
 	$(SILENT)wget $(wget_opt) -O $@ $(CONFIG_SUB_SRC)
 	$(SILENT)chmod u+rwx,go+rx-w $@
 
 $(CONFIG_GUESS_DEST): scripts FORCE
-	@$(ECHO) '  WGET  $@'
+	@$(CT_ECHO) '  WGET  $@'
 	$(SILENT)wget $(wget_opt) -O $@ $(CONFIG_GUESS_SRC)
 	$(SILENT)chmod u+rwx,go+rx-w $@
 
@@ -50,5 +50,5 @@ $(CONFIG_GUESS_DEST): scripts FORCE
 # Clean up the mess
 
 distclean::
-	@$(ECHO) "  CLEAN scripts"
+	@$(CT_ECHO) "  CLEAN scripts"
 	$(SILENT)[ $(CT_TOP_DIR) = $(CT_LIB_DIR) ] || rm -rf $(CT_TOP_DIR)/scripts