[mlir][python] Support CLANG_CL

Author: makslevental

mlir/cmake/modules/AddMLIR.cmake

@@ -584,7 +584,7 @@ function(add_mlir_aggregate name)
   # TODO: Should be transitive.
   set_target_properties(${name} PROPERTIES
     MLIR_AGGREGATE_EXCLUDE_LIBS "${_embed_libs}")
-  if(MSVC)
+  if(WIN32)
     set_property(TARGET ${name} PROPERTY WINDOWS_EXPORT_ALL_SYMBOLS ON)
   endif()
 

mlir/cmake/modules/AddMLIRPython.cmake

@@ -512,7 +512,7 @@ function(add_mlir_python_common_capi_library name)
   )
   add_dependencies(${name} ${_header_sources_target})
 
-  if(MSVC)
+  if(WIN32)
     set_property(TARGET ${name} PROPERTY WINDOWS_EXPORT_ALL_SYMBOLS ON)
   endif()
   set_target_properties(${name} PROPERTIES
@@ -680,7 +680,7 @@ function(add_mlir_python_extension libname extname)
   set(eh_rtti_enable)
   if (MSVC)
     set(eh_rtti_enable /EHsc /GR)
-  elseif(LLVM_COMPILER_IS_GCC_COMPATIBLE)
+  elseif(LLVM_COMPILER_IS_GCC_COMPATIBLE OR CLANG_CL)
     set(eh_rtti_enable -frtti -fexceptions)
   endif ()
   target_compile_options(${libname} PRIVATE ${eh_rtti_enable})