find_first_existing_vc_file(llvm_vc "${LLVM_MAIN_SRC_DIR}") # The VC revision include that we want to generate. set(version_inc "${CMAKE_CURRENT_BINARY_DIR}/VCSRevision.h") set(get_svn_script "${LLVM_CMAKE_PATH}/GenerateVersionFromCVS.cmake") file(WRITE "${version_inc}.undef" "#undef LLVM_REVISION\n") if((DEFINED llvm_vc) AND LLVM_APPEND_VC_REV) execute_process(COMMAND ${CMAKE_COMMAND} -E compare_files "${version_inc}.undef" "${version_inc}" RESULT_VARIABLE files_not_equal OUTPUT_QUIET ERROR_QUIET) # Remove ${version_inc} if it doesn't define a revision. This will force it # to be regenerated when toggling LLVM_APPEND_VC_REV from OFF to ON. if(NOT files_not_equal) file(REMOVE "${version_inc}") endif() # Create custom target to generate the VC revision include. add_custom_command(OUTPUT "${version_inc}" DEPENDS "${llvm_vc}" "${get_svn_script}" COMMAND ${CMAKE_COMMAND} "-DSOURCE_DIR=${LLVM_MAIN_SRC_DIR}" "-DNAME=LLVM_REVISION" "-DHEADER_FILE=${version_inc}" -P "${get_svn_script}") else() # Make sure ${version_inc} doesn't define a revision execute_process(COMMAND ${CMAKE_COMMAND} -E copy_if_different "${version_inc}.undef" "${version_inc}") endif() file(REMOVE "${version_inc}.undef") # Mark the generated header as being generated. set_source_files_properties("${version_inc}" PROPERTIES GENERATED TRUE HEADER_FILE_ONLY TRUE) add_custom_target(llvm_vcsrevision_h DEPENDS "${version_inc}") set_target_properties(llvm_vcsrevision_h PROPERTIES FOLDER "Misc")