From 010163d04de8ebf6db119501eee844191c1dea77 Mon Sep 17 00:00:00 2001
From: Patrick Callahan <pxc@cs.arizona.edu>
Date: Wed, 19 Jul 2017 09:46:34 -0700
Subject: [PATCH] ttyrec: fix build on Darwin (#27500)

* ttyrec: fix build on Darwin

* ttyrec: remove pointless empty list
---
 pkgs/tools/misc/ttyrec/default.nix | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/pkgs/tools/misc/ttyrec/default.nix b/pkgs/tools/misc/ttyrec/default.nix
index a836a2a0d0e..238d2d73d3b 100644
--- a/pkgs/tools/misc/ttyrec/default.nix
+++ b/pkgs/tools/misc/ttyrec/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, fetchurl }:
+{ stdenv, fetchurl, buildPlatform }:
 
 stdenv.mkDerivation rec {
   name = "ttyrec-${version}";
@@ -11,7 +11,7 @@ stdenv.mkDerivation rec {
 
   patches = [ ./clang-fixes.patch ];
 
-  makeFlags = [ "CFLAGS=-DSVR4" ]
+  makeFlags = stdenv.lib.optional buildPlatform.isLinux "CFLAGS=-DSVR4"
     ++ stdenv.lib.optional stdenv.cc.isClang "CC=clang";
 
   installPhase = ''