mstorsjo wrote:
> > Surprisingly, it looks like Cygwin (@tyan0) is working around the export
> > limit on gcc by setting `-DCMAKE_SHARED_LINKER_FLAGS=-fvisibility=hidden`.
>
> This was my misunderstanding. Building successfully was due to
> `-DLLVM_TARGETS_TO_BUILD=X86` which restrict target architecture only to x86.
> `-fvisibility=hidden` does not seem to take effect.
Thanks for clarifying this!
Indeed, `-fvisibility=hidden` (or `__attribute__((visibility("hidden")))` or
`-fvisibility-inlines-hidden` etc) only have an effect with Clang, but the
embedded attributes for omitting symbols from autoexport that it produces are
honored by both ld.bfd and LLD.
https://github.com/llvm/llvm-project/pull/138351
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