From c00225bcaef73c68a2d7908d6d89ec013bfb698a Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Ludovic=20Court=C3=A8s?= <ludo@gnu.org>
Date: Wed, 6 Mar 2013 00:01:10 +0100
Subject: [PATCH] cross-gcc: disable `langCC' when targeting MinGW

---
 pkgs/top-level/all-packages.nix | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index efeafaa53e6e..78f712a71341 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -2072,6 +2072,11 @@ let
         if crossSystem != null && crossSystem.config == "i586-pc-gnu"
         then gnu.libpthreadCross
         else null;
+
+      # XXX: We have troubles cross-compiling libstdc++ on MinGW (see
+      # <http://hydra.nixos.org/build/4268232>), so don't even try.
+      langCC = (crossSystem == null
+                || crossSystem.config != "i686-pc-mingw32");
      });
     libc = libcCross;
     binutils = binutilsCross;