* ext/extmk.rb: define $makeflags.defined? like $mflags.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@30010 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

ChangeLog

@@ -1,3 +1,7 @@
+Thu Dec  2 10:01:59 2010  NARUSE, Yui  <naruse@ruby-lang.org>
+
+	* ext/extmk.rb: define $makeflags.defined? like $mflags.
+
 Thu Dec  2 07:20:20 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
 
 	* lib/test/unit.rb (Test::Unit::GCStressOption): --gc-stress

ext/extmk.rb

@@ -299,6 +299,10 @@ def parse_args()
     grep(/\A#{var}=(.*)/) {return $1}
     false
   end
+  def $makeflags.defined?(var)
+    grep(/\A#{var}=(.*)/) {return $1}
+    false
+  end
 
   if $mflags.set?(?n)
     $dryrun = true