# LLVM_TARGET_DEFINITIONS must contain the name of the .td file to process. # Extra parameters for `tblgen' may come after `ofn' parameter. # Adds the name of the generated file to TABLEGEN_OUTPUT. macro(tablegen ofn) file(GLOB local_tds "*.td") file(GLOB_RECURSE global_tds "${LLVM_MAIN_SRC_DIR}/include/llvm/*.td") if (IS_ABSOLUTE ${LLVM_TARGET_DEFINITIONS}) set(LLVM_TARGET_DEFINITIONS_ABSOLUTE ${LLVM_TARGET_DEFINITIONS}) else() set(LLVM_TARGET_DEFINITIONS_ABSOLUTE ${CMAKE_CURRENT_SOURCE_DIR}/${LLVM_TARGET_DEFINITIONS}) endif() add_custom_command(OUTPUT ${CMAKE_CURRENT_BINARY_DIR}/${ofn} # Generate tablegen output in a temporary file. COMMAND ${LLVM_TABLEGEN_EXE} ${ARGN} -I ${CMAKE_CURRENT_SOURCE_DIR} -I ${LLVM_MAIN_SRC_DIR}/lib/Target -I ${LLVM_MAIN_INCLUDE_DIR} ${LLVM_TARGET_DEFINITIONS_ABSOLUTE} -o ${CMAKE_CURRENT_BINARY_DIR}/${ofn}.tmp # Only update the real output file if there are any differences. # This prevents recompilation of all the files depending on it if there # aren't any. COMMAND ${CMAKE_COMMAND} -E copy_if_different ${CMAKE_CURRENT_BINARY_DIR}/${ofn}.tmp ${CMAKE_CURRENT_BINARY_DIR}/${ofn} # Either way, we no longer need the temporary file. COMMAND ${CMAKE_COMMAND} -E remove ${CMAKE_CURRENT_BINARY_DIR}/${ofn}.tmp DEPENDS tblgen ${local_tds} ${global_tds} COMMENT "Building ${ofn}..." ) set(TABLEGEN_OUTPUT ${TABLEGEN_OUTPUT} ${CMAKE_CURRENT_BINARY_DIR}/${ofn}) set_source_files_properties(${CMAKE_CURRENT_BINARY_DIR}/${ofn} PROPERTIES GENERATED 1) endmacro(tablegen)