[llvm-dev] A question about failures on build machines

[Fāng-ruì Sòng via llvm-dev]

On Sat, Jan 23, 2021 at 7:37 AM Ben Shi via llvm-dev
<llvm-dev at lists.llvm.org> wrote:
>
> Hello,
>
> I have made a patch to the avr backend and it passed code review. But the patch failed on two build machines.
>
> The reason is that my patch is about improving gnu avr-ld command line options but the avr-ld is not installed on the two machines.
>
> The detailed info locates  at
> https://reviews.llvm.org/harbormaster/unit/view/245093/
> https://reviews.llvm.org/harbormaster/unit/view/245092/
>
> So can I commit my patch? Or is it possible to install correspond dependancy on the build machines?
>
> Thank you.
>
> Ben

No. Clang may check whether the linker exists. By default it may
detect some system directories. Driver tests usually specify --sysroot
to point to a mock sysroot tree (test/Driver/Inputs/....).
You can fix the failures without installing avr-ld.