From 5e1ea06c0f476261b673a5e037d5b0216dc08ede Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Ludovic=20Court=C3=A8s?= <ludo@gnu.org>
Date: Thu, 1 Apr 2010 09:26:29 +0000
Subject: [PATCH] boehm-gc: Fix x86_64-darwin builds.

svn path=/nixpkgs/trunk/; revision=20900
---
 pkgs/development/libraries/boehm-gc/default.nix | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/pkgs/development/libraries/boehm-gc/default.nix b/pkgs/development/libraries/boehm-gc/default.nix
index 0983edbcdd28..025ad6c1dc86 100644
--- a/pkgs/development/libraries/boehm-gc/default.nix
+++ b/pkgs/development/libraries/boehm-gc/default.nix
@@ -44,3 +44,10 @@ stdenv.mkDerivation {
     platforms = stdenv.lib.platforms.all;
   };
 }
+
+//
+
+(if stdenv.system == "x86_64-darwin"
+ # Fix "#error ucontext routines are deprecated, and require _XOPEN_SOURCE to be defined".
+ then { configureFlags = "CPPFLAGS=-D_XOPEN_SOURCE"; }
+ else {})