From 3fe86ac5821aa4fadbfc6a41c5cde24273491e27 Mon Sep 17 00:00:00 2001
From: Joachim Fasting <joachifm@fastmail.fm>
Date: Sat, 26 Mar 2016 15:39:20 +0100
Subject: [PATCH] io: fix gcc5 build

c11 inline semantics breaks the build

See https://github.com/stevedekorte/io/issues/316
and https://hydra.nixos.org/build/33606216/nixlog/1/raw
---
 pkgs/development/interpreters/io/default.nix | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/pkgs/development/interpreters/io/default.nix b/pkgs/development/interpreters/io/default.nix
index f4854c237bd..4f4880aaca7 100644
--- a/pkgs/development/interpreters/io/default.nix
+++ b/pkgs/development/interpreters/io/default.nix
@@ -18,7 +18,8 @@ stdenv.mkDerivation {
     freeglut libsamplerate pcre libevent libedit yajl
   ];
 
-  cmakeFlags = [ "-DCMAKE_BUILD_TYPE=release" ];
+  # for gcc5; c11 inline semantics breaks the build
+  NIX_CFLAGS_COMPILE = "-fgnu89-inline";
 
   meta = {
     description = "Io programming language";