https://gcc.gnu.org/bugzilla/show_bug.cgi?id=109798
--- Comment #5 from Eric Botcazou <ebotcazou at gcc dot gnu.org> --- > Oh, huh. When I build it using gnatmake there's no issues, e.g. > `gnatmake testing.adb` Interesting. Can you pass -v to GPRbuild to display the command line?