pigz: something change

Signed-off-by: Ken Wong <xinxijishuwyq@gmail.com>

utils/pigz/Makefile

@@ -14,7 +14,6 @@ PKG_LICENSE_FILES:=README
 PKG_CPE_ID:=cpe:/a:zlib:pigz
 
 PKG_BUILD_PARALLEL:=1
-PKG_INSTALL:=1
 
 include $(INCLUDE_DIR)/package.mk
 

utils/pigz/patches/001.patch

@@ -1,14 +1,14 @@
 --- a/Makefile	2019-05-22 19:54:23.980451289 +0800
-+++ b/Makefile	2019-05-09 14:20:36.269505910 +0800
-@@ -1,4 +1,3 @@
++++ b/Makefile	2019-06-10 10:32:58.054675929 +0800
+@@ -1,7 +1,7 @@
 -CC=gcc
- CFLAGS=-O3 -Wall -Wextra -Wno-unknown-pragmas
- LDFLAGS=
- LIBS=-lm -lpthread -lz
-@@ -102,3 +101,6 @@ all: pigz pigzj pigzt pigzn docs
+-CFLAGS=-O3 -Wall -Wextra -Wno-unknown-pragmas
+-LDFLAGS=
+-LIBS=-lm -lpthread -lz
++CC?=gcc
++CFLAGS?=-O3 -Wall -Wextra -Wno-unknown-pragmas
++LDFLAGS?=
++LIBS?=-lm -lpthread -lz
+ ZOPFLI=zopfli/src/zopfli/
+ ZOP=deflate.o blocksplitter.o tree.o lz77.o cache.o hash.o util.o squeeze.o katajainen.o
  
- clean:
- 	@rm -f *.o pigz unpigz pigzj pigzn pigzt pigz.c.gz pigz.c.zz pigz.c.zip
-+
-+install:
-+	true