Hi Bar, Sure. There is a cmake file https://github.com/MariaDB/server/blob/10.3/cmake/maintainer.cmake which seems to become the place to customize GCC/Clang specific warnings. I suppose you can add this flag there , to MY_MAINTAINER_CXX_WARNINGS. Wlad From: Alexander Barkov Sent: Wednesday, December 6, 2017 12:49 PM To: Vladislav Vaintroub; monty@mariadb.org; maria-developers Subject: -Wnon-virtual-dtor and scripts in Hello Vlad, Are we still supposed to use these scripts in the BUILD directory: compile-pentium64-debug compile-pentium64-debug-all compile-pentium64-debug-max compile-pentium64-gcov compile-pentium64-gprof compile-pentium64-max compile-pentium64-valgrind-max I stopped using them long time ago. But these scripts set some extra warnings for gcc, so now it's easy to overlook some warnings. Monty is still using these scripts and gets those extra warnings. In particular, -Wnon-virtual-dtor is often a subject of warnings. Is there a way to enable the -Wnon-virtual-dtor for gcc in the default build, i.e. when just using "cmake" instead of BUILD scripts? Thanks!