From ea96ea5d2f19c5bb87dec7918939d1fefce37405 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Ludovic=20Court=C3=A8s?= <ludo@gnu.org>
Date: Tue, 22 Nov 2011 08:45:25 +0000
Subject: [PATCH] GCC 4.5: Fix cross-compilation to MinGW.

svn path=/nixpkgs/trunk/; revision=30522
---
 pkgs/development/compilers/gcc-4.5/default.nix | 1 +
 1 file changed, 1 insertion(+)

diff --git a/pkgs/development/compilers/gcc-4.5/default.nix b/pkgs/development/compilers/gcc-4.5/default.nix
index 950243bebe7..0948e94702e 100644
--- a/pkgs/development/compilers/gcc-4.5/default.nix
+++ b/pkgs/development/compilers/gcc-4.5/default.nix
@@ -148,6 +148,7 @@ stdenv.mkDerivation ({
   postPatch =
     if (stdenv.system == "i586-pc-gnu"
         || (libcCross != null                  # e.g., building `gcc.hostDrv'
+            && libcCross ? crossConfig
             && libcCross.crossConfig == "i586-pc-gnu")
         || (cross != null && cross.config == "i586-pc-gnu"
             && libcCross != null))