From 5d0fb7c155f446fd76bf7ccc5aa17c47729f5f2e Mon Sep 17 00:00:00 2001
From: tenderlove <tenderlove@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
Date: Thu, 6 Jan 2011 00:18:16 +0000
Subject: * lib/mkmf.rb (configuration): fixing gsub when multiple error flags 
  are passed to GCC.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@30472 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
---
 lib/mkmf.rb | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

(limited to 'lib')

diff --git a/lib/mkmf.rb b/lib/mkmf.rb
index d7964d61cb..a4388862a3 100644
--- a/lib/mkmf.rb
+++ b/lib/mkmf.rb
@@ -1660,7 +1660,9 @@ VPATH = #{vpath.join(CONFIG['PATH_SEPARATOR'])}
   extconf_h = $extconf_h ? "-DRUBY_EXTCONF_H=\\\"$(RUBY_EXTCONF_H)\\\" " : $defs.join(" ") << " "
   if warnflags = CONFIG['warnflags'] and CONFIG['GCC'] == 'yes' and !$extmk
     # turn warnings into errors only for bundled extensions.
-    warnflags = warnflags.gsub(/(?:\A|\s)-Werror=/, '\1-W')
+    warnflags = warnflags.split.map { |flag|
+      flag.gsub(/(?:\A|\s)-Werror=/, '\1-W')
+    }.join ' '
   end
   mk << %{
 CC = #{CONFIG['CC']}
-- 
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