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1# CMake script that writes version control information to a header.2#3# Input variables:4# NAMES - A list of names for each of the source directories.5# <NAME>_SOURCE_DIR - A path to source directory for each name in NAMES.6# HEADER_FILE - The header file to write7#8# The output header will contain macros <NAME>_REPOSITORY and <NAME>_REVISION,9# where "<NAME>" is substituted with the names specified in the input variables,10# for each of the <NAME>_SOURCE_DIR given.11 12get_filename_component(LLVM_CMAKE_DIR "${CMAKE_SCRIPT_MODE_FILE}" PATH)13 14list(APPEND CMAKE_MODULE_PATH "${LLVM_CMAKE_DIR}")15 16include(VersionFromVCS)17 18# Handle strange terminals19set(ENV{TERM} "dumb")20 21function(append_info name revision repository)22 if(revision)23 file(APPEND "${HEADER_FILE}.tmp"24 "#define ${name}_REVISION \"${revision}\"\n")25 else()26 file(APPEND "${HEADER_FILE}.tmp"27 "#undef ${name}_REVISION\n")28 endif()29 if(repository)30 file(APPEND "${HEADER_FILE}.tmp"31 "#define ${name}_REPOSITORY \"${repository}\"\n")32 else()33 file(APPEND "${HEADER_FILE}.tmp"34 "#undef ${name}_REPOSITORY\n")35 endif()36endfunction()37 38foreach(name IN LISTS NAMES)39 if(LLVM_FORCE_VC_REVISION AND LLVM_FORCE_VC_REPOSITORY)40 set(revision ${LLVM_FORCE_VC_REVISION})41 set(repository ${LLVM_FORCE_VC_REPOSITORY})42 elseif(LLVM_FORCE_VC_REVISION)43 set(revision ${LLVM_FORCE_VC_REVISION})44 elseif(LLVM_FORCE_VC_REPOSITORY)45 set(repository ${LLVM_FORCE_VC_REPOSITORY})46 elseif(${name}_VC_REPOSITORY AND ${name}_VC_REVISION)47 set(revision ${${name}_VC_REVISION})48 set(repository ${${name}_VC_REPOSITORY})49 elseif(DEFINED ${name}_SOURCE_DIR)50 if (${name}_SOURCE_DIR)51 get_source_info("${${name}_SOURCE_DIR}" revision repository)52 endif()53 else()54 message(FATAL_ERROR "${name}_SOURCE_DIR is not defined")55 endif()56 append_info(${name} "${revision}" "${repository}")57endforeach()58 59# Copy the file only if it has changed.60execute_process(COMMAND ${CMAKE_COMMAND} -E copy_if_different61 "${HEADER_FILE}.tmp" "${HEADER_FILE}")62file(REMOVE "${HEADER_FILE}.tmp")63