From 94362af1e8f310a0b118d8c9c3be6263d3a9cf44 Mon Sep 17 00:00:00 2001
From: Spencer Whitt <sw@swhitt.me>
Date: Thu, 14 May 2015 15:12:04 -0400
Subject: [PATCH] libev: Fix compilation with clang

---
 pkgs/development/libraries/libev/default.nix | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/pkgs/development/libraries/libev/default.nix b/pkgs/development/libraries/libev/default.nix
index 90cab2cc6871..ce7d7b9e2759 100644
--- a/pkgs/development/libraries/libev/default.nix
+++ b/pkgs/development/libraries/libev/default.nix
@@ -7,6 +7,11 @@ stdenv.mkDerivation rec {
     url = "http://dist.schmorp.de/libev/${name}.tar.gz";
     sha256 = "1jyw7qbl0spxqa0dccj9x1jsw7cj7szff43cq4acmklnra4mzz48";
   };
+
+  # Version 4.19 is not valid C11 (which Clang default to)
+  # Check if this is still necessary on upgrade
+  NIX_CFLAGS_COMPILE = if stdenv.cc.isClang then "-std=c99" else null;
+
   meta = {
     description = "A high-performance event loop/event model with lots of features";
     maintainers = [ stdenv.lib.maintainers.raskin ];