On 8/17/20 1:11 PM, John Baldwin wrote: > Author: jhb > Date: Mon Aug 17 20:11:43 2020 > New Revision: 364325 > URL: https://svnweb.freebsd.org/changeset/base/364325 > > Log: > Add a USE_GCC_TOOLCHAINS knob to make universe. > > This uses GCC toolchains instead of LLVM on architectures supported by > GCC. Currently this uses GCC 6 on aarch64, amd64, i386, and mips. > > Although this does also try to use GCC 6 on powerpc, it is always > skipped for now since a powerpc-gcc6 package is not available and the > structure of make universe makes it hard to skip a subset of arches > for a target. This should be short-lived as freebsd-gcc9 does include > a powerpc-gcc9 package so powerpc should work once this switches to > GCC 9.
The goal of this change is to make it easier to do a tinderbox run with GCC rather than clang for things like warning coverage, etc. I'm currently working on a branch to move this to GCC 9 which adds the powerpc and riscv leaving only 32-bit arm as the arch without a GCC external toolchain (which I might rectify at some point). However, with GCC 9 I currently am working through a few issues: - For i386, gcc wants some __atomic functions for 64-bit when linking lldb even though I've changed it to default to -march=i686 like clang which should let it use cmpxchg8b instead AFAIK. - powerpc64 generates an ICE trying to build CSU bits. - powerpc is running into issues with secureplt though I have fixes for that that I'm testing. - riscv wants to use some __atomic functions which seems odd. -- John Baldwin _______________________________________________ svn-src-head@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/svn-src-head To unsubscribe, send any mail to "svn-src-head-unsubscr...@freebsd.org"
