From 00caf6b66896d56031786b7a44820b4fa24598b4 Mon Sep 17 00:00:00 2001
From: Thomas Bernard <miniupnp@free.fr>
Date: Mon, 29 Jan 2018 13:21:01 +0100
Subject: [PATCH] use $(shell) script to test GNU tar only when building under
 UNIX (linux, *BSD, etc.)

---
 src/Makefile | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/src/Makefile b/src/Makefile
index 97646866..1ae97d02 100644
--- a/src/Makefile
+++ b/src/Makefile
@@ -53,9 +53,7 @@ endif
 PLATFORMOBJ =
 
 TAR = tar
-TARTRANSFORM = $(shell if $(TAR) --version | grep 'GNU tar' > /dev/null ; then \
-                         echo "--strip=1 --transform 's,^,grafx2/,g'" ; else \
-                         echo "-s '/\.\./grafx2/'" ; fi )
+TARTRANSFORM = --strip=1 --transform 's,^,grafx2/,g'
 
 # There is no uname under windows, but we can guess we are there with the COMSPEC env.var
 # Windows specific
@@ -309,6 +307,9 @@ endif
     RMDIR = rmdir --ignore-fail-on-non-empty
     CP = cp
     ZIP = zip
+    TARTRANSFORM = $(shell if $(TAR) --version | grep 'GNU tar' > /dev/null ; then \
+                             echo "--strip=1 --transform 's,^,grafx2/,g'" ; else \
+                             echo "-s '/\.\./grafx2/'" ; fi )
     PLATFORMFILES = ../share/grafx2/gfx2.png
     ifneq ($(ATARICROSS),1)
       ifeq ($(NOLUA),1)