https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67728
Andrew Pinski <pinskia at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Component|c |bootstrap Summary|Build fails when |Build fails when |cross-compiling with |cross-compiling with |in-tree GMP |in-tree GMP and ISL --- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> --- Sounds like the bug is an issue with ISL rather than GMP itself. I don't normally building with ISL so I have never noticed the issue. Also I think your patch is incorrect since there is a reason why we disable the assembly version is because GMP nativelly tries to detect the current processor and then use the assembler version for that.