gzdoom: fix build

srcpkgs/gzdoom/patches/fix-build.patch

@@ -0,0 +1,13 @@
+--- a/CMakeLists.txt
++++ b/CMakeLists.txt
+@@ -276,7 +276,9 @@ else()
+ 			include ( FindPkgConfig )
+ 			pkg_check_modules( MUSL_FTS musl-fts )
+ 			if ( MUSL_FTS_FOUND )
+-				set ( ALL_C_FLAGS "${ALL_C_FLAGS} ${MUSL_FTS_LDFLAGS}" )
++				foreach(flags IN LISTS MUSL_FTS_LDFLAGS)
++					set ( ALL_C_FLAGS "${ALL_C_FLAGS} ${flags}" )
++				endforeach()
+ 			else ( MUSL_FTS_FOUND )
+ 				message (ERROR "fts_* functions not found in the system" )
+ 			endif ( MUSL_FTS_FOUND )

srcpkgs/gzdoom/template

@@ -20,6 +20,8 @@ checksum="454257582be0576501eef1efc99fe7ea70f1c4d7993549db3cbc709ce75fc102
 skip_extraction="${pkgname}_${version}_amd64.deb"
 nocross=yes
 
+CXXFLAGS=-std=gnu++11
+
 if [ "$XBPS_TARGET_LIBC" = musl ]; then
 	makedepends+=" musl-fts-devel libexecinfo-devel"
 fi