!3 add gcc-c++ to BuildRequires to use c++ command

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

gc.spec

@@ -1,12 +1,12 @@
 Name:    gc
 Version: 8.0.4
-Release: 2
+Release: 3
 Summary: A garbage collector for C and C++
 License: BSD and GPLv1+
 Url:     http://www.hboehm.info/gc/
 Source0: http://www.hboehm.info/gc/gc_source/gc-%{version}.tar.gz
 
-BuildRequires: gcc libtool libatomic_ops-devel gdb
+BuildRequires: gcc gcc-c++ libtool libatomic_ops-devel gdb
 
 %description
 The Boehm-Demers-Weiser conservative garbage collector can be
@@ -72,6 +72,9 @@ make check
 
 
 %changelog
+* Fri Jun 4 2021 panxiaohe<panxiaohe@huawei.com> - 8.0.4-3
+- add gcc-c++ to BuildRequires to use c++ command
+
 * Sat Mar 14 2020 shenyangyang<shenyangyang4@huawei.com> - 8.0.4-2
 - Type:bugfix
 - ID:NA