Subversion Repositories QNX 8.QNX8 LLVM/Clang compiler suite

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  1.  
  2. option(LLVM_ALLOW_PROBLEMATIC_CONFIGURATIONS OFF "Set this option to ON to allow problematic toolchain configurations. Use on your own risk.")
  3.  
  4. macro(log_problematic MESSAGE)
  5.   if(LLVM_ALLOW_PROBLEMATIC_CONFIGURATIONS)
  6.     message(WARNING "${MESSAGE}")
  7.   else()
  8.     message(FATAL_ERROR "${MESSAGE}\nYou can force usage of this configuration by passing -DLLVM_ALLOW_PROBLEMATIC_CONFIGURATIONS=ON")
  9.   endif()
  10. endmacro()
  11.  
  12. # MSVC and /arch:AVX is untested and have created problems before. See:
  13. # https://github.com/llvm/llvm-project/issues/54645
  14. if(${CMAKE_CXX_COMPILER_ID} STREQUAL MSVC)
  15.   string(TOLOWER "${CMAKE_CXX_FLAGS} ${CMAKE_C_FLAGS}" _FLAGS)
  16.   if(_FLAGS MATCHES "/arch:avx[0-9]*")
  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.")
  18.   endif()
  19. endif()
  20.