From 0d8bec14f040ddc2bf1db43ec57bca2ad7fb9856 Mon Sep 17 00:00:00 2001
From: Piotr Bogdan <ppbogdan@gmail.com>
Date: Fri, 4 Jan 2019 19:33:50 +0000
Subject: [PATCH] jack_rack: link with pthreads, lib{dl,m} explicitly

---
 pkgs/applications/audio/jack-rack/default.nix | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/pkgs/applications/audio/jack-rack/default.nix b/pkgs/applications/audio/jack-rack/default.nix
index d68e67d19dd..26a717dbd6e 100644
--- a/pkgs/applications/audio/jack-rack/default.nix
+++ b/pkgs/applications/audio/jack-rack/default.nix
@@ -7,6 +7,11 @@ stdenv.mkDerivation rec {
   };
   nativeBuildInputs = [ pkgconfig ];
   buildInputs = [ libjack2 ladspaH gtk2 alsaLib libxml2 librdf ];
+  NIX_LDFLAGS = [
+    "-ldl"
+    "-lm"
+    "-lpthread"
+  ];
 
   meta = {
     description = ''An effects "rack" for the JACK low latency audio API'';