[Runtimes][CMake] Add CMake option to enable execute-only code generation on AArch64 #143698
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…tion on AArch64 Based on the discussion in https://discourse.llvm.org/t/rfc-execute-only-code-support-for-runtime-libraries-on-aarch64/86180 a single, global configuration option should be used to enable execute-only code generation for the runtime libraries. The new option `LLVM_EXECUTE_ONLY_CODE` adds the `-mexecute-only` flag to `CMAKE_C_FLAGS` and `CMAKE_CXX_FLAGS`, which simplifies the library-level configuration needed for the runtime libraries. Project-specific changes are still needed to handle assembly sources, e.g. in compiler-rt and libunwind.
This was referenced Jun 11, 2025
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Based on the discussion in https://discourse.llvm.org/t/rfc-execute-only-code-support-for-runtime-libraries-on-aarch64/86180 a single, global configuration option should be used to enable execute-only code generation for the runtime libraries. The new option
LLVM_EXECUTE_ONLY_CODEadds the-mexecute-onlyflag toCMAKE_C_FLAGSandCMAKE_CXX_FLAGS, which simplifies the library-level configuration needed for the runtime libraries.Project-specific changes are still needed to handle assembly sources, e.g. in compiler-rt and libunwind.