From 3413562111a141cb7ffb687819dc9d63c52f11c7 Mon Sep 17 00:00:00 2001
From: Will Dietz <w@wdtz.org>
Date: Tue, 30 Jan 2018 18:03:17 -0600
Subject: [PATCH] fftw: disable using openmp w/musl

For now anyway, since we build w/o support for it IIRC.
---
 pkgs/development/libraries/fftw/default.nix | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/pkgs/development/libraries/fftw/default.nix b/pkgs/development/libraries/fftw/default.nix
index 36c824c7528..70120997107 100644
--- a/pkgs/development/libraries/fftw/default.nix
+++ b/pkgs/development/libraries/fftw/default.nix
@@ -29,7 +29,7 @@ stdenv.mkDerivation rec {
     # all x86_64 have sse2
     # however, not all float sizes fit
     ++ optional (stdenv.isx86_64 && (precision == "single" || precision == "double") )  "--enable-sse2"
-    ++ optional stdenv.cc.isGNU "--enable-openmp"
+    ++ optional (stdenv.cc.isGNU && !stdenv.hostPlatform.isMusl) "--enable-openmp"
     # doc generation causes Fortran wrapper generation which hard-codes gcc
     ++ optional (!withDoc) "--disable-doc";