-D_FORTIFY_SOURCE=2
-fcf-protection=none
-fdebug-prefix-map=/build/0ad-0.0.24~r24930=.
-O2
-Wdate-time
-Werror=format-security
-Wl,-z,now
-Wno-error=class-memaccess
-Wno-error=deprecated-copy
-Wno-multistatement-macros
See also http://irclogs.wildfiregames.com/%230ad-dev/2021-02-17-QuakeNet-%230ad-dev.log
and https://bugs.launchpad.net/ubuntu/+source/0ad/+bug/1918179