Add a new action: show-tuple

- in a directory containing a crosstool-NG configuration,
  prints the tuple of the configured target to stdout.

 -------- diffstat follows --------
 /trunk/Makefile.in             |    4     3     1     0 +++-
 /trunk/scripts/showTuple.sh.in |   30    30     0     0 ++++++++++++++++++++++++++++++
 /trunk/ct-ng.comp              |    2     1     1     0 +-
 /trunk/ct-ng.in                |   10     9     1     0 +++++++++-
 4 files changed, 43 insertions(+), 3 deletions(-)

Makefile.in

@@ -102,7 +102,7 @@ uninstall: real-uninstall
 #--------------------------------------
 # Build rules
 
-build-bin: ct-ng scripts/crosstool-NG.sh scripts/saveSample.sh
+build-bin: ct-ng scripts/crosstool-NG.sh scripts/saveSample.sh scripts/showTuple.sh
 	@chmod 755 $^
 
 build-lib: paths.mk
@@ -151,6 +151,8 @@ clean-bin:
 	@rm -f scripts/crosstool-NG.sh
 	@echo "  RM     'script/saveSample.sh'"
 	@rm -f scripts/saveSample.sh
+	@echo "  RM     'script/showTuple.sh'"
+	@rm -f scripts/showTuple.sh
 
 clean-lib:
 	@echo "  RM     'paths.mk'"

ct-ng.comp

@@ -16,7 +16,7 @@ _ct-ng () {
 
     actions='help menuconfig oldconfig saveconfig
              build build. build-all build-all.
-             list-samples list-steps
+             list-samples list-steps show-tuple
              clean distclean wiki-samples updatetools
              tarball version'
 

ct-ng.in

@@ -111,6 +111,9 @@ include $(CT_LIB_DIR)/steps.mk
 include $(CT_LIB_DIR)/samples/samples.mk
 include $(CT_LIB_DIR)/scripts/scripts.mk
 
+help-config::
+	@echo  '  show-tuple         - Print the tuple of the currently configured toolchain'
+
 help-distrib::
 	@echo  '  tarball            - Build a tarball of the configured toolchain'
 
@@ -119,9 +122,14 @@ help-env::
 # End help system
 
 .config:
-	@echo ' There is no existing .config file!'
+	@echo "There is no existing .config file!"
+	@echo "You need to either run 'menuconfig',"
+	@echo "or configure an existing sample."
 	@false
 
+show-tuple: .config
+	$(SILENT)$(bash) $(CT_LIB_DIR)/scripts/showTuple.sh
+
 # Actual build
 build: .config
 	$(SILENT)$(CT_LIB_DIR)/scripts/crosstool-NG.sh

scripts/showTuple.sh.in

@@ -0,0 +1,30 @@
+#!@@CT_bash@@
+
+# What we need:
+#  - the .config file
+
+# Parse the tools' paths configuration
+. "${CT_LIB_DIR}/paths.mk"
+
+# We'll need the stdout later, save it
+exec 7>&1
+
+# Parse the common functions
+. "${CT_LIB_DIR}/scripts/functions"
+
+# Don't care about any log file
+exec >/dev/null
+rm -f "${tmp_log_file}"
+
+# Parse the configuration file
+. .config
+
+# Parse architecture and kernel specific functions
+. "${CT_LIB_DIR}/scripts/build/arch/${CT_ARCH}.sh"
+. "${CT_LIB_DIR}/scripts/build/kernel/${CT_KERNEL}.sh"
+
+# Build CT_TARGET
+CT_DoBuildTargetTuple
+
+# All this for this single echo... :-( Sigh, I'll have to re-arrange things...
+echo "${CT_TARGET}" >&7