From 8ab400988c211b39c106ed2c49908d520677113b Mon Sep 17 00:00:00 2001
From: Joachim Fasting <joachifm@fastmail.fm>
Date: Mon, 28 Mar 2016 18:59:34 +0200
Subject: [PATCH] lsh: fix gcc5 build

The build fails with c11 (also tested c99), but works with gnu90.
---
 pkgs/tools/networking/lsh/default.nix | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/pkgs/tools/networking/lsh/default.nix b/pkgs/tools/networking/lsh/default.nix
index 77d268f3a47c..5d788af1682e 100644
--- a/pkgs/tools/networking/lsh/default.nix
+++ b/pkgs/tools/networking/lsh/default.nix
@@ -29,6 +29,8 @@ stdenv.mkDerivation rec {
     export lsh_cv_sys_unix98_ptys=yes
   '';
 
+  NIX_CFLAGS_COMPILE = "-std=gnu90";
+
   buildInputs = [ gperf guile gmp zlib liboop readline gnum4 pam ];
 
   meta = {