From 6c8fbed541188b04998ffc92ef960b6970f1f04e Mon Sep 17 00:00:00 2001
From: Rob Vermaas <rob.vermaas@gmail.com>
Date: Wed, 27 Apr 2016 09:22:45 +0000
Subject: [PATCH] Fix nlopt build.

---
 pkgs/development/libraries/nlopt/default.nix | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/pkgs/development/libraries/nlopt/default.nix b/pkgs/development/libraries/nlopt/default.nix
index 080f09dfdf45..ddf47cf31d8e 100644
--- a/pkgs/development/libraries/nlopt/default.nix
+++ b/pkgs/development/libraries/nlopt/default.nix
@@ -16,6 +16,10 @@ stdenv.mkDerivation rec {
         "M_INSTALL_DIR=$(out)/${octave.sitePath}/m " +
         "OCT_INSTALL_DIR=$(out)/${octave.sitePath}/oct ");
 
+  preConfigure = ''
+    find octave -name '*.cc' | xargs sed -i 's|Octave_map|octave_map|g'
+  '';
+
   meta = {
     homepage = "http://ab-initio.mit.edu/nlopt/";
     description = "Free open-source library for nonlinear optimization";