On Sat, 30 Nov 2024 at 10:10, Jakub Jelinek <ja...@redhat.com> wrote: > > On Sat, Nov 30, 2024 at 09:54:02AM +0000, Jonathan Wakely via Gcc wrote: > > On Sat, 30 Nov 2024, 09:01 David H. Lynch Jr. via Gcc, <gcc@gcc.gnu.org> > > wrote: > > > > > Is it possible to build gcc 13 with gcc 14 ? > > > > > > > Yes > > Note, there are some exceptions, I think e.g. Ada needs the same or older > major version of gnat and doesn't work well with newer Ada (but if you don't > need Ada, that is a non-issue). > Also, if building very old gcc with very new gcc (one year difference is > fine, but 10 or 30 could be), one can run into the newer compiler erroring > on something that hasn't been fixed in the old compiler, etc. Some things > can be easily worked around e.g. by using -std=gnu89 when GCC was written in > C, for some things one might need to patch certain minor things.
These branches can help with that https://github.com/jwakely/gcc/branches/all?query=renovated But I haven't created a branch for building gcc-13 with gcc-14 because that should Just Work.