From 0a321b21fa52b47a764b0fee2ab6a3de80807777 Mon Sep 17 00:00:00 2001
From: naruse <naruse@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
Date: Sat, 28 Mar 2015 02:30:17 +0000
Subject: [PATCH] fix r50104 [Bug #10906]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@50105 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
---
 ext/date/extconf.rb | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/ext/date/extconf.rb b/ext/date/extconf.rb
index 0547a3e966..6f479eaa26 100644
--- a/ext/date/extconf.rb
+++ b/ext/date/extconf.rb
@@ -1,3 +1,5 @@
 require 'mkmf'
-try_cflags("-std=iso9899:1999")
+if try_cflags("-std=iso9899:1999")
+  $CFLAGS += " " << "-std=iso9899:1999"
+end
 create_makefile('date_core')