[PATCH] D102090: [CMake][ELF] Add -fno-semantic-interposition and -Bsymbolic-functions

[Fangrui Song via Phabricator via cfe-commits]

MaskRay marked an inline comment as done.
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In D102090#2749473 <https://reviews.llvm.org/D102090#2749473>, @rnk wrote:

> +1 to the idea, but I have no idea if this is the right cmake spot
>
> If we've decided to actually care about the shared library build, should we also consider using `-fvisibility-inlines-hidden`?

Line 329:  `check_cxx_compiler_flag("-fvisibility-inlines-hidden" SUPPORTS_FVISIBILITY_INLINES_HIDDEN_FLAG)`.
llvm-project has been using this since 2012. With this flag, taking the address of an inline function may be different in different modules.
So -fno-semantic-interposition and -Bsymbolic-functions will now complement the existing option:)


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https://reviews.llvm.org/D102090