https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65902
Richard Earnshaw <rearnsha at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|UNCONFIRMED |RESOLVED Resolution|--- |INVALID --- Comment #6 from Richard Earnshaw <rearnsha at gcc dot gnu.org> --- (In reply to Bernd Edlinger from comment #5) > Well, I thought maybe it would not hurt to be more permissive... > > At least math.h and stdlib.h include <cyg/infra/cyg_type.h> > which contains something like this: > > #ifndef __cplusplus > > typedef cyg_halbool bool; > > # ifndef false > # define false 0 > # endif > > # ifndef true > # define true (!false) > # endif > > #endif Neither of those headers should be doing that... I think you'll find more packages than just GCC are going to fail to build if they do.