!2 add gcc to BuildRequires

From: @panxh_purple
Reviewed-by: @xiezhipeng1
Signed-off-by: @xiezhipeng1

libunistring.spec

@@ -1,11 +1,12 @@
 Name:		libunistring
 Version:	0.9.10
-Release:	7
+Release:	8
 Summary:	GNU Unicode string library
 License:	GPLV2+ or LGPLv3+
 URL:		http://www.gnu.org/software/libunistring/
 Source0:	https://ftp.gnu.org/gnu/%{name}/%{name}-%{version}.tar.xz
 
+BuildRequires:  gcc
 Provides:	bundled(gnulib)
 
 %description
@@ -58,6 +59,9 @@ make check
 %doc README DEPENDENCIES
 
 %changelog
+* Fri Jun 4 2021 panxiaohe<panxiaohe@huawei.com> - 0.9.10-8
+- add gcc to BuildRequires
+
 * Fri Sep 27 2019 shenyangyang<shenyangyang4@huawei.com> - 0.9.10-7
 - Type:enhancement
 - ID:NA