common.mk: no expansion

* common.mk (showconfig): get rid of variable expansion by shell.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@39177 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

Makefile.in

@@ -178,6 +178,8 @@ OS_DEST_FILE  = $@
 
 MESSAGE_BEGIN = @for line in
 MESSAGE_END = ; do echo "$$line"; done
+ECHO_BEGIN = @sep=''; for word in
+ECHO_END = ; do echo @ECHO_N@ "$$sep'$$word'@ECHO_C@"; sep=' '; done; echo
 
 configure_args = @configure_args@
 #### End of variables

common.mk

@@ -162,9 +162,9 @@ showflags:
 
 .PHONY: showconfig
 showconfig:
-	@$(MESSAGE_BEGIN) \
-	"$(configure_args)" \
-	$(MESSAGE_END)
+	@$(ECHO_BEGIN) \
+	$(configure_args) \
+	$(ECHO_END)
 
 exts: build-ext
 

win32/Makefile.sub

@@ -373,6 +373,8 @@ ruby_pc = $(RUBY_BASE_NAME)-$(MAJOR).$(MINOR).pc
 
 MESSAGE_BEGIN = @for %I in (
 MESSAGE_END = ) do @echo.%~I
+ECHO_BEGIN = @echo.
+ECHO_END =
 
 all: $(srcdir)/win32/Makefile.sub $(win_srcdir)/Makefile.sub $(srcdir)/common.mk