[PATCH] D112126: [libunwind] Try to add -unwindlib=none while configuring and building libunwind

[Harald van Dijk via Phabricator via llvm-commits]

hvdijk added a comment.

In D112126#3081764 <https://reviews.llvm.org/D112126#3081764>, @mstorsjo wrote:

> I don’t think it supports that, unfortunately… FWIW, I’ve run builds for a couple years now with that configuration, and haven’t run into any issue due to that so far.

I see that the failing check for `fopen` in `libc` results in a differently linked `libunwind.so`, which may cause issues with build reproducibility.

> It should be possible to move this before the `LIBUNWIND_SUPPORTS_TARGET_EQ_X86_64_UNKNOWN_LINUX_GNU_FLAG` check though.

That would be great, thanks, that would also move it before the `libc` check.


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https://reviews.llvm.org/D112126