[PATCH] D115009: [SPIRV 1/6] Add stub for SPIRV backend

[Fangrui Song via Phabricator via llvm-commits]

MaskRay added a comment.

Other than the regular `-DCMAKE_BUILD_TYPE=Release -DLLVM_ENABLE_ASSERTIONS=on` builds, it's good to ensure a few others work:

- `-DBUILD_SHARED_LIBS=on` ensure CMake build dependency is correct. The mode uses `-Wl,-z,defs` to link shared objects. It has some dependency checking effects: https://maskray.me/blog/2021-06-13-dependency-related-linker-options#z-defs)
- `-DLLVM_LINK_LLVM_DYLIB=on -DCLANG_LINK_CLANG_DYLIB=on`: somewhat covered by `-DBUILD_SHARED_LIBS=on`, but not bad to ensure it works as many Linux distros have shifted to this mode
- `-DLLVM_ENABLE_EXPENSIVE_CHECKS=on -DLLVM_ENABLE_ABI_BREAKING_CHECKS=on`


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https://reviews.llvm.org/D115009