https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90330
--- Comment #31 from Iain Sandoe <iains at gcc dot gnu.org> --- (In reply to Matt Thompson from comment #30) > (In reply to Matt Thompson from comment #28) > > (In reply to Iain Sandoe from comment #27) > > > That's fine - essentially, you're building them from source and therefore > > > don't need to worry about --with-gmp= configure options etc. > > > > > > For the record, I'm using GMP-6.1.2, MPFR-3.1.6, MPC-1.1.0 and ISL-0.20. > > > > Well, it looks like download_prerequisites might be behind the times: > > > > gmp='gmp-6.1.0.tar.bz2' > > mpfr='mpfr-3.1.4.tar.bz2' > > mpc='mpc-1.0.3.tar.gz' > > isl='isl-0.18.tar.bz2' > > > > I'm going to try and download the newest versions of all these and build > > with them. Maybe that'll help (though I don't see much/any C++ in them...). > > Yeah. Didn't help. Still, it was a fun exercise. That was a long shot to solve your problem; was mainly documenting what I've done that worked. > If GCC was on github, I'd make a pull request to update the > download_prerequisites script, though. Unless there's a good reason to use > these version? AFAIK, the pre-reqs are the minimum versions and there's nothing to sop one from deciding to use newer (keeping the minimum to the lowest practical is advantageous in compatibility). Updating any GCC dependency has wide ramifications - many folks might just use the version installed on their system (if it's Linux) - on Darwin we care somewhat less, since we have to build them anyway. ==== I've started a 9.2 build/install/test cycle with xcode10.2 toolchain as the bootstrap - will post the results here later/tomorrow.