From 21eb80d4850e4156d4adc3feb7d77b4f6b1c37ab Mon Sep 17 00:00:00 2001
From: Yann Collet <cyan@fb.com>
Date: Fri, 3 Feb 2017 14:25:07 -0800
Subject: [PATCH] remove zlib detection artefact

result of compilation test is sent to /dev/null
---
 NEWS              | 1 +
 programs/Makefile | 3 ++-
 2 files changed, 3 insertions(+), 1 deletion(-)

diff --git a/NEWS b/NEWS
index f404f6e37..072caee59 100644
--- a/NEWS
+++ b/NEWS
@@ -1,4 +1,5 @@
 v1.1.3
+cli : zstd can decompress .gz files. Feature can be turned off by targeting `make zstd-nogz` or setting `make HAVE_ZLIB=0`
 cli : new : experimental target `make zstdmt`, with multi-threading support
 cli : new : advanced commands for detailed parameters, by Przemyslaw Skibinski
 cli : fix zstdless on Mac OS-X, by Andrew Janke
diff --git a/programs/Makefile b/programs/Makefile
index ce90bd457..f94bffd44 100644
--- a/programs/Makefile
+++ b/programs/Makefile
@@ -66,7 +66,8 @@ EXT =
 endif
 
 # zlib detection
-HAVE_ZLIB := $(shell echo "int main(){}" | $(CC) -o have_zlib -x c - -lz && echo 1 || echo 0)
+VOID = /dev/null
+HAVE_ZLIB := $(shell echo "int main(){}" | $(CC) -o $(VOID) -x c - -lz && echo 1 || echo 0)
 ifeq ($(HAVE_ZLIB), 1)
 ZLIBCPP = -DZSTD_GZDECOMPRESS
 ZLIBLD = -lz