* Richard W. M. Jones: > On Mon, Mar 15, 2021 at 11:24:47AM +0100, Florian Weimer wrote: >> * Takayuki Nagata: >> >> > I think "--with-arch=" should be "rv64g" for gcc without compressed >> > instruction support, because the default is RV64GC[0]. >> >> As far as I understand it, there is no glibc port for RISC-V without >> compressed instruction support. Presumably the GCC default reflects >> this. > > Oh ah, is this so? If so that's a problem for Billa because > he's trying to rebuild Fedora for the SHAKTI chip that lacks > compressed instructions. > > But I had a look through all the RISC-V asm files in current glibc and > I can't see any compressed instructions there, nor any directives to > turn on the rvc option. > > $ egrep -i '(\bc\.|rvc)' `find sysdeps/riscv/ sysdeps/unix/sysv/linux/riscv/ -name '*.S' ` > > Do you know why glibc wouldn't understand the C extension? There would have to be a discussion about ABI impact, whether we would have to change the program interpreter name, etc. I don't know if this has happened yet, probably not. Otherwise we'd be building this ABI variant regularly (like all the other targets). Thanks, Florian _______________________________________________ devel mailing list -- devel@xxxxxxxxxxxxxxxxxxxxxxx To unsubscribe send an email to devel-leave@xxxxxxxxxxxxxxxxxxxxxxx Fedora Code of Conduct: https://docs.fedoraproject.org/en-US/project/code-of-conduct/ List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines List Archives: https://lists.fedoraproject.org/archives/list/devel@xxxxxxxxxxxxxxxxxxxxxxx Do not reply to spam on the list, report it: https://pagure.io/fedora-infrastructure
