From 367b3a99e4112473464ee06b9989e4ed4bbed306 Mon Sep 17 00:00:00 2001
From: Neil Mayhew <neil_mayhew@users.sourceforge.net>
Date: Tue, 2 Jun 2020 08:50:01 -0600
Subject: [PATCH] multipath-tools: Fix build failure due to GZIP make var

The multipath-tools makefiles use GZIP as a variable name but this is
also the name of the environment variable gzip uses to get its default
options.

Normally, this wouldn't get into the environment but nixpkgs exports
GZIP=-n in a setup hook. This in turn causes make to export its own
value for this variable. gzip objects to having -c in the environment
variable and aborts, causing the build to fail.
---
 pkgs/os-specific/linux/multipath-tools/default.nix | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/pkgs/os-specific/linux/multipath-tools/default.nix b/pkgs/os-specific/linux/multipath-tools/default.nix
index 7e5ce115db4a..d60b4a9a549d 100644
--- a/pkgs/os-specific/linux/multipath-tools/default.nix
+++ b/pkgs/os-specific/linux/multipath-tools/default.nix
@@ -17,8 +17,8 @@ stdenv.mkDerivation rec {
     ' libmultipath/defaults.h
     sed -i -e 's,\$(DESTDIR)/\(usr/\)\?,$(prefix)/,g' \
       kpartx/Makefile libmpathpersist/Makefile
-    sed -i -e "s,GZIP = .*, GZIP = gzip -9n -c," \
-      Makefile.inc
+    sed -i -e "s,GZIP,GZ," \
+      $(find * -name Makefile\*)
   '';
 
   nativeBuildInputs = [ gzip pkgconfig perl ];