nobu	2014-03-20 12:21:52 +0900 (Thu, 20 Mar 2014)

  New Revision: 45365

  http://svn.ruby-lang.org/cgi-bin/viewvc.cgi?view=rev&revision=45365

  Log:
    dl/extconf.rb: check for -fno-defer-pop option
    
    * ext/dl/extconf.rb: check for -fno-defer-pop option, since clang
      5.1 no longer support -fno-defer-pop option.

  Modified files:
    trunk/ext/dl/extconf.rb
Index: ext/dl/extconf.rb
===================================================================
--- ext/dl/extconf.rb	(revision 45364)
+++ ext/dl/extconf.rb	(revision 45365)
@@ -1,7 +1,12 @@ https://github.com/ruby/ruby/blob/trunk/ext/dl/extconf.rb#L1
 require 'mkmf'
 
 if RbConfig::CONFIG['GCC'] == 'yes'
-  (have_macro("__clang__") ? $LDFLAGS : $CFLAGS) << " -fno-defer-pop"
+  flag = " -fno-defer-pop"
+  if have_macro("__clang__")
+    $LDFLAGS << flag if try_ldflags(flag)
+  else
+    $CFLAGS << flag
+  end
   $CFLAGS << " -fno-omit-frame-pointer"
 end
 

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