From 4ea690ea3b19680ef168f5b32d7a132cc4d05a5c Mon Sep 17 00:00:00 2001
From: nobu <nobu@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
Date: Thu, 23 May 2013 15:18:05 +0000
Subject: extmk.rb: don't duplicate

* ext/extmk.rb (extract_makefile): do not add dldflags if duplicated.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@40902 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
---
 ext/extmk.rb | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/ext/extmk.rb b/ext/extmk.rb
index 9521e6ca0a..eda487c30e 100755
--- a/ext/extmk.rb
+++ b/ext/extmk.rb
@@ -105,7 +105,9 @@ def extract_makefile(makefile, keep = true)
     /^STATIC_LIB[ \t]*=[ \t]*\S+/ =~ m or $static = false
   end
   $preload = Shellwords.shellwords(m[/^preload[ \t]*=[ \t]*(.*)/, 1] || "")
-  $DLDFLAGS += " " + (m[/^dldflags[ \t]*=[ \t]*(.*)/, 1] || "")
+  if dldflags = m[/^dldflags[ \t]*=[ \t]*(.*)/, 1] and !$DLDFLAGS.include?(dldflags)
+    $DLDFLAGS += " " + dldflags
+  end
   if s = m[/^LIBS[ \t]*=[ \t]*(.*)/, 1]
     s.sub!(/^#{Regexp.quote($LIBRUBYARG)} */, "")
     s.sub!(/ *#{Regexp.quote($LIBS)}$/, "")
-- 
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