!9 compile with fcommon to support gcc 10

From: @liu-yinsi
Reviewed-by: @small_leek
Signed-off-by: @small_leek

libmemcached.spec

@@ -1,7 +1,7 @@
 Name:          libmemcached
 Summary:       Client library and command line tools for memcached server
 Version:       1.0.18
-Release:       17
+Release:       18
 License:       BSD
 URL:           http://libmemcached.org/
 #origin source:https://launchpad.net/libmemcached/1.0/1.0.18/+download/libmemcached-1.0.18.tar.gz
@@ -54,7 +54,7 @@ cp -p tests/*.{cc,h} examples/
 %configure \
    --with-memcached=%{_bindir}/memcached \
    --enable-sasl --enable-libmemcachedprotocol \
-   --enable-memaslap --enable-dtrace --disable-static
+   --enable-memaslap --enable-dtrace --disable-static CFLAGS="$CLASS -fcommon"
 
 %make_build V=1
 
@@ -100,6 +100,9 @@ make test
 %{_mandir}/man3/hashkit*
 
 %changelog
+* Mon Aug 02 2021 Liu Yinsi <liuyinsi@163.com> - 1.0.18-18
+- compile with -fcommon to support gcc 10
+
 * Fri Oct 30 2020 lingsheng <lingsheng@huawei.com> - 1.0.18-17
 - Fix memdump unexpected errors