fixup! [CMake] respect LLVMConfig.cmake's LLVM_DEFINITIONS

mlir

Author: jeremyd2019

mlir/CMakeLists.txt

@@ -21,6 +21,11 @@ set(CMAKE_CXX_STANDARD 17 CACHE STRING "C++ standard to conform to")
 if(MLIR_STANDALONE_BUILD)
   find_package(LLVM CONFIG REQUIRED)
   set(CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH} ${LLVM_CMAKE_DIR})
+
+  separate_arguments(LLVM_DEFINITIONS_LIST NATIVE_COMMAND ${LLVM_DEFINITIONS})
+  add_definitions(${LLVM_DEFINITIONS_LIST})
+  list(APPEND CMAKE_REQUIRED_DEFINITIONS ${LLVM_DEFINITIONS_LIST})
+
   include(HandleLLVMOptions)
   include(AddLLVM)
   include(TableGen)