https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92627
Jonathan Wakely <redi at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|UNCONFIRMED |WAITING Last reconfirmed| |2019-11-22 Ever confirmed|0 |1 --- Comment #3 from Jonathan Wakely <redi at gcc dot gnu.org> --- (In reply to George R. Goffe from comment #0) > This has been working correctly up to GCC version 10.0.0 20190918, The MPFR requirement just changed, so "it worked before" probably means the version of MPFR you're using was good enough previously, but now you need to use a newer one. So not a GCC bug. There's no need to install those prerequisites separately anyway, see https://gcc.gnu.org/wiki/InstallingGCC and use the contrib/download_prerequisites script to avoid having to build and install them manually.