fix concurrency FTBFS

Signed-off-by: Igor Gnatenko <i.gnatenko.brain@gmail.com>

0001-fix-make-concurrency-build-277.patch

@@ -0,0 +1,40 @@
+From d26ee3fa74dc1c3ddcd7c490b098287d2a400629 Mon Sep 17 00:00:00 2001
+From: Yann Collet <cyan@fb.com>
+Date: Thu, 15 Dec 2016 22:13:36 +0100
+Subject: [PATCH] fix `make` concurrency build (#277)
+
+(cherry picked from commit 913b98fd6fe814ee4c719a90a0642497c9d3d0dc)
+---
+ Makefile | 4 +++-
+ NEWS     | 1 +
+ 2 files changed, 4 insertions(+), 1 deletion(-)
+
+diff --git a/Makefile b/Makefile
+index 48e6752..c77f697 100644
+--- a/Makefile
++++ b/Makefile
+@@ -52,7 +52,9 @@ endif
+ 
+ .PHONY: default all lib lz4 clean test versionsTest examples
+ 
+-default: lib lz4-release
++default:
++	@$(MAKE) -C $(LZ4DIR)
++	@$(MAKE) -C $(PRGDIR)
+ 
+ all:
+ 	@$(MAKE) -C $(LZ4DIR) $@
+diff --git a/NEWS b/NEWS
+index f6874ce..d41c91f 100644
+--- a/NEWS
++++ b/NEWS
+@@ -1,5 +1,6 @@
+ v1.7.4.2
+ fix : Makefile : release build compatible with PIE and customized compilation directives provided through environment variables (#274, reported by Antoine Martin)
++build : Makefile : fix concurrency lib+exe build (#277)
+ 
+ v1.7.4
+ Improved : much better speed in -mx32 mode
+-- 
+2.11.0
+

lz4.spec

@@ -6,6 +6,8 @@ Summary:        Extremely fast compression algorithm
 License:        GPLv2+ and BSD
 URL:            https://lz4.github.io/lz4/
 Source0:        https://github.com/Cyan4973/lz4/archive/v%{version}/%{name}-%{version}.tar.gz
+# https://github.com/lz4/lz4/issues/277
+Patch0001:      0001-fix-make-concurrency-build-277.patch
 
 %description
 LZ4 is an extremely fast loss-less compression algorithm, providing compression