From 3878472f02470b5b16ec2f0d7bbd6dcf957c1cb2 Mon Sep 17 00:00:00 2001
From: Raffael Mancini <raffael@mancini.lu>
Date: Wed, 31 Dec 2014 18:31:42 +0100
Subject: [PATCH] ipopt: fix build after minor gcc update (close #5519)

The configure script only checks for a specific version to enable a fix in
finding cstdlib and cstring.
---
 pkgs/development/libraries/science/math/ipopt/default.nix | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/pkgs/development/libraries/science/math/ipopt/default.nix b/pkgs/development/libraries/science/math/ipopt/default.nix
index 3a22ecb73fc..6b82024409a 100644
--- a/pkgs/development/libraries/science/math/ipopt/default.nix
+++ b/pkgs/development/libraries/science/math/ipopt/default.nix
@@ -9,6 +9,10 @@ stdenv.mkDerivation rec {
     sha256 = "0sji4spl5dhw1s3f9y0ym09gi7d1c8wldn6wbiap4q8dq7cvklq5";
   };
 
+  preConfigure = ''
+     export CXXDEFS="-DHAVE_RAND -DHAVE_CSTRING -DHAVE_CSTDIO"
+  '';
+
   nativeBuildInputs = [ unzip ];
 
   buildInputs = [ gfortran blas liblapack ];