[llvm-dev] Compiler-rt Build Fails and OpenMP Tests Fail on Non-Debian 32-bit Distros: bits/c++config.h not found

[Fangrui Song via llvm-dev]

On 2021-07-15, Luke Benes wrote:
>I just ran a clean build of main on an updated Arch Linux 32 and i686 OpenSUSE Tumbleweed. The build and tests are still failing. Do we really want to keep a Debian specific patch that breaks all other distros?
>
>More details over at https://bugs.llvm.org/show_bug.cgi?id=50303
>
>-Luke

I installed an image from archlinux32.org into qemu to understand what happened.

Sent https://reviews.llvm.org/D106119

I really hope Debian native gcc can move away from g++-multiarch-incdir.diff
It's so difficult keeping Debian gcc with g++-multiarch-incdir.diff / 
Debian gcc without g++-multiarch-incdir.diff / non-Debian multiarch gcc
/ non-Debian non-multiarch gcc happy...