https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114105
--- Comment #6 from Andrew Pinski <pinskia at gcc dot gnu.org> --- (In reply to Mark Millard from comment #5) > (In reply to Andrew Pinski from comment #2) > > . . . > > >Part of the reason FreeBSD puts effort into making --disable-bootstrap work > > This should not be done unless you are building with GCC itself. The reason > > is only the C, C++ front-ends are supposed to be able to compile with a > > (non-GCC) C++11 compiler. So FreeBSD is doing it wrong anyways. > > Thanks for that wording. I did not get that relationship from the wording > in the standard documentation that talks about --disable-bootstrap . It > might be good if that documentation did also have such wording. It is documented here: https://gcc.gnu.org/install/prerequisites.html "To build all languages in a cross-compiler or other configuration where 3-stage bootstrap is not performed, you need to start with an existing GCC binary (version 4.8.3 or later) because source code for language frontends other than C might use GCC extensions. " Though it should say other than `C and C++` but that is a minor thing.
