From ad98c36f1b1b681db433a6cb798e7ec21e8da33c Mon Sep 17 00:00:00 2001
From: Jan Malakhovski <oxij@oxij.org>
Date: Thu, 15 Mar 2018 00:00:01 +0000
Subject: [PATCH] stdenv: generic/setup.sh: simplify buildPhase Makefile check

---
 pkgs/stdenv/generic/setup.sh | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/pkgs/stdenv/generic/setup.sh b/pkgs/stdenv/generic/setup.sh
index d7a4781448ae..17aaa5b798ff 100644
--- a/pkgs/stdenv/generic/setup.sh
+++ b/pkgs/stdenv/generic/setup.sh
@@ -968,7 +968,7 @@ buildPhase() {
     # set to empty if unset
     : ${makeFlags=}
 
-    if [[ -z "$makeFlags" && ! ( -n "${makefile:-}" || -e Makefile || -e makefile || -e GNUmakefile ) ]]; then
+    if [[ -z "$makeFlags" && -z "${makefile:-}" && ! ( -e Makefile || -e makefile || -e GNUmakefile ) ]]; then
         echo "no Makefile, doing nothing"
     else
         # See https://github.com/NixOS/nixpkgs/pull/1354#issuecomment-31260409