!9 fix issue:源代码 Makefile 文件指定了使用 gcc 编译器进行编译，导致编译失败。

From: @zhangchao13 
Reviewed-by: @dillon_chen 
Signed-off-by: @dillon_chen

0001-pigz-fix-cc.patch

@@ -0,0 +1,22 @@
+From 568d3b532e8861fdde4e3b16be8af692d5eac032 Mon Sep 17 00:00:00 2001
+From: zhangchao13 <chaozhangm@isoftstone.com>
+Date: Sun, 23 Apr 2023 10:33:13 +0800
+Subject: [PATCH] pigz-fix-cc
+
+---
+ Makefile | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/Makefile b/Makefile
+index b1866cf..0fc97fa 100644
+--- a/Makefile
++++ b/Makefile
+@@ -1,4 +1,4 @@
+-CC=gcc
++CC?=gcc
+ CFLAGS=-O3 -Wall -Wextra -Wno-unknown-pragmas -Wcast-qual
+ LDFLAGS=
+ # CFLAGS=-O3 -Wall -Wextra -Wno-unknown-pragmas -Wcast-qual -g -fsanitize=thread
+-- 
+2.33.0
+

pigz.spec

@@ -1,7 +1,7 @@
 #spec from source code(%{name}-%{version}.tar.gz)
 Name:     pigz
 Version:  2.7
-Release:  1
+Release:  2
 Summary:  pigz is a parallel implementation of gzip which utilizes multiple cores
 License:  zlib
 Source0:  http://www.zlib.net/%{name}/%{name}-%{version}.tar.gz
@@ -16,6 +16,8 @@ Mark Adler, and uses the zlib and pthread libraries.
 
 %package_help
 
+Patch0: 0001-pigz-fix-cc.patch
+
 %prep
 %autosetup -n %{name}-%{version} -p1
 
@@ -40,6 +42,9 @@ make test
 %{_mandir}/man1/pigz.1*
 
 %changelog
+* Sun Apr 23 2023 Zhang Chao <chaozhangm@isoftstone.com> - 2.7-2
+- Fix CC compiler support
+
 * Thu Jan 19 2023 zhangnan <zhangnan134@huawei.com> - 2.7-1
 - update to 2.7