From 1a520f8aa40270e36f9c5f863ec363a60f3eb8a7 Mon Sep 17 00:00:00 2001
From: Sheena Artrip <sheena.artrip@gmail.com>
Date: Fri, 15 Apr 2016 13:30:09 -0400
Subject: [PATCH] sipsak: fix build by using --std=gnu89

---
 pkgs/tools/networking/sipsak/default.nix | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/pkgs/tools/networking/sipsak/default.nix b/pkgs/tools/networking/sipsak/default.nix
index 7242417bf2be..1149d9aa8e4e 100644
--- a/pkgs/tools/networking/sipsak/default.nix
+++ b/pkgs/tools/networking/sipsak/default.nix
@@ -10,6 +10,8 @@ stdenv.mkDerivation rec {
     c-ares
   ];
 
+  NIX_CFLAGS_COMPILE = "--std=gnu89";
+
   src = fetchurl {
     url = "https://github.com/sipwise/sipsak/archive/mr${version}.tar.gz";
     sha256 = "769fe59966b1962b67aa35aad7beb9a2110ebdface36558072a05c6405fb5374";