-if(CMAKE_CROSSCOMPILING)
- set(CX_NATIVE_TG_DIR "${CMAKE_BINARY_DIR}/native")
-
- add_custom_command(OUTPUT ${CX_NATIVE_TG_DIR}
- COMMAND ${CMAKE_COMMAND} -E make_directory ${CX_NATIVE_TG_DIR}
- COMMENT "Creating ${CX_NATIVE_TG_DIR}...")
-
- # Forward a subset of configure options to discover additional tablegen modules.
- get_cmake_property(_variableNames CACHE_VARIABLES)
- foreach (_variableName ${_variableNames})
- if (_variableName MATCHES "^(LLVM_EXTERNAL_.*_SOURCE_DIR)$")
- list(APPEND CX_CMAKE_ARGUMENTS "-D${_variableName}=\"${${_variableName}}\"")
- endif ()
- endforeach()
-
- add_custom_command(OUTPUT ${CX_NATIVE_TG_DIR}/CMakeCache.txt
- # TODO: Clear the old CMakeCache.txt somehow without breaking restat.
- COMMAND ${CMAKE_COMMAND} -UMAKE_TOOLCHAIN_FILE -DCMAKE_BUILD_TYPE=Release
- -DLLVM_BUILD_POLLY=OFF ${CX_CMAKE_ARGUMENTS}
- -G "${CMAKE_GENERATOR}" ${CMAKE_SOURCE_DIR}
- WORKING_DIRECTORY ${CX_NATIVE_TG_DIR}
- DEPENDS ${CX_NATIVE_TG_DIR}
- COMMENT "Configuring native TableGen...")
-
- add_custom_target(ConfigureNativeTableGen DEPENDS ${CX_NATIVE_TG_DIR}/CMakeCache.txt)
-
- set_directory_properties(PROPERTIES ADDITIONAL_MAKE_CLEAN_FILES ${CX_NATIVE_TG_DIR})
-endif()
-