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.
Jakub
