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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 14 | pmbaty | 1 | |
| 2 | option(LLVM_ALLOW_PROBLEMATIC_CONFIGURATIONS OFF "Set this option to ON to allow problematic toolchain configurations. Use on your own risk.") |
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| 3 | |||
| 4 | macro(log_problematic MESSAGE) |
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| 5 | if(LLVM_ALLOW_PROBLEMATIC_CONFIGURATIONS) |
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| 6 | message(WARNING "${MESSAGE}") |
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| 7 | else() |
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| 8 | message(FATAL_ERROR "${MESSAGE}\nYou can force usage of this configuration by passing -DLLVM_ALLOW_PROBLEMATIC_CONFIGURATIONS=ON") |
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| 9 | endif() |
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| 10 | endmacro() |
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| 11 | |||
| 12 | # MSVC and /arch:AVX is untested and have created problems before. See: |
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| 13 | # https://github.com/llvm/llvm-project/issues/54645 |
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| 14 | if(${CMAKE_CXX_COMPILER_ID} STREQUAL MSVC) |
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| 15 | string(TOLOWER "${CMAKE_CXX_FLAGS} ${CMAKE_C_FLAGS}" _FLAGS) |
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| 16 | if(_FLAGS MATCHES "/arch:avx[0-9]*") |
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| 17 | log_problematic("Compiling LLVM with MSVC and the /arch:AVX flag is known to cause issues with parts of LLVM.\nSee https://github.com/llvm/llvm-project/issues/54645 for details.\nUse clang-cl if you want to enable AVX instructions.") |
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| 18 | endif() |
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| 19 | endif() |