http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54659
--- Comment #9 from Eric Botcazou <ebotcazou at gcc dot gnu.org> 2012-12-21 11:57:41 UTC --- > but of course even better would be to fix the reason for this hack - why > are those Ada files built with a C++ compiler in the first place?! Probably because it would be too complex to invoke 2 compilers in the Makefile. But nobody tried if I recall correctly and volunteers are always welcome. > Why does it need to wrap _everything_ inside extern "C"?? See prefix.h: because the foreign language interface of the Ada part is hardcoded for the C language. This cannot really be changed for the time being, but if the directives are misplaced, feel free to move them around.