| 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}.empty" "") |
| if((DEFINED llvm_vc) AND LLVM_APPEND_VC_REV) |
| |
| execute_process(COMMAND ${CMAKE_COMMAND} -E compare_files |
| "${version_inc}.empty" "${version_inc}" |
| RESULT_VARIABLE files_not_equal |
| OUTPUT_QUIET |
| ERROR_QUIET) |
| # Remove ${version_inc} if it's empty -- toggling LLVM_APPEND_VC_REV |
| # from OFF to ON. |
| if(NOT files_not_equal) |
| file(REMOVE "${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} is an empty file. |
| execute_process(COMMAND ${CMAKE_COMMAND} -E copy_if_different |
| "${version_inc}.empty" "${version_inc}") |
| endif() |
| file(REMOVE "${version_inc}.empty") |
| |
| # 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}") |
