* configure.in (config.h): add include guard.

* win32/Makefile.sub, bcc32/Makefile.sub (config.h): ditto.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@28759 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

ChangeLog

@@ -1,3 +1,9 @@
+Mon Jul 26 18:18:09 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
+
+	* configure.in (config.h): add include guard.
+
+	* win32/Makefile.sub, bcc32/Makefile.sub (config.h): ditto.
+
 Mon Jul 26 14:38:06 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
 
 	* configure.in (XCFLAGS): missing.h needs config.h.

bcc32/Makefile.sub

@@ -248,10 +248,14 @@ config: config.status
 
 config.status: $(CONFIG_H)
 
+guard = INCLUDE_RUBY_CONFIG_H
+
 $(CONFIG_H): $(MKFILES) $(srcdir)/bcc32/Makefile.sub
 	@if not exist $(arch_hdrdir:/=\) md $(arch_hdrdir:/=\)
 	@if not exist $(arch_hdrdir:/=\)\ruby md $(arch_hdrdir:/=\)\ruby
 	@$(IFCHANGE) $(RUBY_CONFIG_H:/=\) &&|
+\#ifndef $(guard)
+\#define $(guard) 1
 \#define NO_BIG_INLINE 1
 \#define HAVE_SYS_TYPES_H 1
 \#define HAVE_SYS_STAT_H 1
@@ -364,6 +368,7 @@ $(CONFIG_H): $(MKFILES) $(srcdir)/bcc32/Makefile.sub
 \#define DLEXT ".so"
 \#define RUBY_LIB_PREFIX "/lib/ruby"
 \#define RUBY_PLATFORM "$(ARCH)-$(OS)"
+\#endif /* $(guard) */
 |
 	@exit > $(@:/=\)
 

configure.in

@@ -2627,7 +2627,13 @@ AC_SUBST(MANTYPE)
 arch_hdrdir="${EXTOUT}/include/${arch}/ruby"
 AS_MKDIR_P("${arch_hdrdir}")
 config_h="${arch_hdrdir}/config.h"
-tr -d '\015' < confdefs.h | grep -v "^#define PACKAGE_" |
+guard=INCLUDE_RUBY_CONFIG_H
+{
+  echo "#ifndef $guard"
+  echo "#define $guard 1"
+  grep -v "^#define PACKAGE_" confdefs.h
+  echo "#endif /* $guard */"
+} | tr -d '\015' |
 ${srcdir}/tool/ifchange "${config_h}" -
 tr -d '\015' < largefile.h > confdefs.h
 rm largefile.h

win32/Makefile.sub

@@ -385,6 +385,8 @@ BANG = !
 !include config.h
 !endif
 
+guard = INCLUDE_RUBY_CONFIG_H
+
 $(CONFIG_H): $(MKFILES) $(srcdir)/win32/Makefile.sub $(win_srcdir)/Makefile.sub
 	@echo Creating config.h
 !if !exist("$(arch_hdrdir)")
@@ -394,6 +396,8 @@ $(CONFIG_H): $(MKFILES) $(srcdir)/win32/Makefile.sub $(win_srcdir)/Makefile.sub
 	@md $(arch_hdrdir:/=\)\ruby
 !endif
 	@$(IFCHANGE) $(RUBY_CONFIG_H:/=\) <<
+#ifndef $(guard)
+#define $(guard) 1
 #if _MSC_VER != $(MSC_VER)
 #error MSC version unmatch: _MSC_VER: $(MSC_VER) is expected.
 #endif
@@ -601,6 +605,7 @@ $(BANG)if "$(RUBY_SO_NAME)"!="$$(RUBY_SO_NAME)" || "$(ARCH)-$(PLATFORM)"!="$$(AR
 config.h: nul
 $(BANG)endif
 #endif
+#endif /* $(guard) */
 <<
 	@exit > $(@:/=\)