nobu	2015-12-23 14:29:36 +0900 (Wed, 23 Dec 2015)

  New Revision: 53263

  http://svn.ruby-lang.org/cgi-bin/viewvc.cgi?view=revision&revision=53263

  Log:
    configure.in: get rid of macro redefinition
    
    * configure.in (__STDC_WANT_LIB_EXT1__): get rid of redefinition
      to suppress warnings by gcc5.

  Modified files:
    trunk/configure.in
Index: configure.in
===================================================================
--- configure.in	(revision 53262)
+++ configure.in	(revision 53263)
@@ -2317,7 +2317,8 @@ AC_CHECK_FUNCS(utimes) https://github.com/ruby/ruby/blob/trunk/configure.in#L2317
 AC_CHECK_FUNCS(wait4)
 AC_CHECK_FUNCS(waitpid)
 
-AS_IF([test "$ac_cv_func_memset_s" = yes], [AC_DEFINE([__STDC_WANT_LIB_EXT1__], 1)])
+AS_IF([test "$ac_cv_func_memset_s" = yes],
+    [RUBY_DEFINE_IF([!defined __STDC_WANT_LIB_EXT1__], [__STDC_WANT_LIB_EXT1__], 1)])
 
 AS_IF([test "$ac_cv_func_getcwd" = yes], [
     AC_CACHE_CHECK(if getcwd allocates buffer if NULL is given, [rb_cv_getcwd_malloc],

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