From 3981d60ba2b7e0d027964fb7430e135ffd6f460d Mon Sep 17 00:00:00 2001
From: nobu <nobu@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
Date: Thu, 20 Mar 2014 03:21:52 +0000
Subject: [PATCH] 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.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@45365 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
---
 ext/dl/extconf.rb | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/ext/dl/extconf.rb b/ext/dl/extconf.rb
index 4ef46f85fb..53e73c3a8b 100644
--- a/ext/dl/extconf.rb
+++ b/ext/dl/extconf.rb
@@ -1,7 +1,12 @@
 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