https://gcc.gnu.org/bugzilla/show_bug.cgi?id=91520
--- Comment #5 from Iain Sandoe <iains at gcc dot gnu.org> --- (In reply to Eric Gallager from comment #4) > (In reply to Iain Sandoe from comment #1) > > > > I plan on publishing an update to my alternate assembler/linker pair that > > incorporates the changes from LLVM-9 and isn't dependent on the release > > schedule for Xcode. > > Have you published this update yet? The back port is on my LLVM-7.1.1 branch on github - so if one builds the "llas" tool (only need to build LLVM, it's not necessary to build clang or any of the libs). then you can use --with-as=/path/to/llas the tool follows cctools command line (plus some llvm additions). Hopefully, I'll bring the 7.x stuff forward to 8.x and also add llas to 9 and 10. (but the 7.1.1 llas is sufficient to bootstrap powerpc, i686 and x86-64). Not sure why I mentioned the linker in this context, there are some useful bug-fixes but not relevant to this PR. Not sure if the LLVM fixes have made it into Xcode yet (but that would only be relevant to 10.14+).