Unable to build with clang (fixed upstream)

[nightspc]

I've been experimenting with getting gentoo installed on an unsupported Mac Mini M2 pro using chadmed's asahi-gentoosupport repo and the instructions from the alternate-distros page, except instead of using a normal stage3 (GNU toolchain/glibc) I'm using the experimental LLVM/musl one.

This has been fine so far, except when trying to compile u-boot with portage as I get an error about a duplicate definition of _start in arch/arm/cpu/armv8/start.S as the symbol is also defined in boot0-linux-kernel-header.h which is imported by start.S.

This has been fixed upstream by removing the duplicate definition:
https://source.denx.de/u-boot/u-boot/-/commit/4787c764f98ac9d4670ff45e11676c28fb61b882

Would you consider applying this change?

Note: This still doesn't fix compilation with the LLVM/musl stage3 as linking fails, however this is an upstream issue that can be worked around by using ld.bfd instead of ld.lld for now as ld.lld is not supported.

[kettenis]

I rebased the asahi branch on the current upstream master branch. I intend to do another rebase in early January when the upstream 2024.01 release is tagged. It is then up to @marcan to rebase the asahi-releng branch on top of that.