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https://bugs.gentoo.org/show_bug.cgi?id=442302

# HG changeset patch
# User Martin Blais <mblais@marketfactory.com>
# Date 1339464558 14400
# Node ID 00d868ea5f4a92f4b5c7e2665403eb18c7390aca
# Parent  fdc247a7d9e51ca71b284f592be33f0465140f6b
Fixed compile error that only shows up in FC17 with gcc-4.7.

diff -r fdc247a7d9e5 -r 00d868ea5f4a src/main.h
--- a/src/main.h	Mon Feb 20 10:46:22 2012 -0500
+++ b/src/main.h	Mon Jun 11 21:29:18 2012 -0400
@@ -35,6 +35,10 @@
  * PUBLIC DECLARATIONS
  *============================================================================*/
 
+extern "C" {
+
 extern char** environ;
 
+}
+
 #endif