1# CMake project that writes Subversion revision information to a header. 2# 3# Input variables: 4# SOURCE_DIRS - A list of source directories. 5# NAMES - A list of macro prefixes for each of the source directories. 6# HEADER_FILE - The header file to write 7# 8# The output header will contain macros <NAME>_REPOSITORY and <NAME>_REVISION, 9# where "<NAME>" and is substituted with the names specified in the input 10# variables, for each of the SOURCE_DIRS given. 11 12# Chop off cmake/modules/GetSVN.cmake 13get_filename_component(LLVM_DIR "${CMAKE_SCRIPT_MODE_FILE}" PATH) 14get_filename_component(LLVM_DIR "${LLVM_DIR}" PATH) 15get_filename_component(LLVM_DIR "${LLVM_DIR}" PATH) 16 17# Handle strange terminals 18set(ENV{TERM} "dumb") 19 20macro(get_source_info_svn path revision repository) 21 # If svn is a bat file, find_program(Subversion) doesn't find it. 22 # Explicitly search for that here; Subversion_SVN_EXECUTABLE will override 23 # the find_program call in FindSubversion.cmake. 24 find_program(Subversion_SVN_EXECUTABLE NAMES svn svn.bat) 25 26 # FindSubversion does not work with symlinks. See PR 8437 27 if (NOT IS_SYMLINK "${path}") 28 find_package(Subversion) 29 endif() 30 if (Subversion_FOUND) 31 subversion_wc_info( ${path} Project ) 32 if (Project_WC_REVISION) 33 set(${revision} ${Project_WC_REVISION} PARENT_SCOPE) 34 endif() 35 if (Project_WC_URL) 36 set(${repository} ${Project_WC_URL} PARENT_SCOPE) 37 endif() 38 endif() 39endmacro() 40 41macro(get_source_info_git_svn path revision repository) 42 find_program(git_executable NAMES git git.exe git.cmd) 43 if (git_executable) 44 execute_process(COMMAND ${git_executable} svn info 45 WORKING_DIRECTORY ${path} 46 TIMEOUT 5 47 RESULT_VARIABLE git_result 48 OUTPUT_VARIABLE git_output) 49 if (git_result EQUAL 0) 50 string(REGEX REPLACE "^(.*\n)?Revision: ([^\n]+).*" 51 "\\2" git_svn_rev "${git_output}") 52 set(${revision} ${git_svn_rev} PARENT_SCOPE) 53 string(REGEX REPLACE "^(.*\n)?URL: ([^\n]+).*" 54 "\\2" git_url "${git_output}") 55 set(${repository} ${git_url} PARENT_SCOPE) 56 endif() 57 endif() 58endmacro() 59 60macro(get_source_info_git path revision repository) 61 find_program(git_executable NAMES git git.exe git.cmd) 62 if (git_executable) 63 execute_process(COMMAND ${git_executable} log -1 --pretty=format:%H 64 WORKING_DIRECTORY ${path} 65 TIMEOUT 5 66 RESULT_VARIABLE git_result 67 OUTPUT_VARIABLE git_output) 68 if (git_result EQUAL 0) 69 set(${revision} ${git_output} PARENT_SCOPE) 70 endif() 71 execute_process(COMMAND ${git_executable} remote -v 72 WORKING_DIRECTORY ${path} 73 TIMEOUT 5 74 RESULT_VARIABLE git_result 75 OUTPUT_VARIABLE git_output) 76 if (git_result EQUAL 0) 77 string(REGEX REPLACE "^(.*\n)?[^ \t]+[ \t]+([^ \t\n]+)[ \t]+\\(fetch\\).*" 78 "\\2" git_url "${git_output}") 79 set(${repository} "${git_url}" PARENT_SCOPE) 80 endif() 81 endif() 82endmacro() 83 84function(get_source_info path revision repository) 85 if (EXISTS "${path}/.svn") 86 get_source_info_svn("${path}" revision repository) 87 elseif (EXISTS "${path}/.git/svn/refs") 88 get_source_info_git_svn("${path}" revision repository) 89 elseif (EXISTS "${path}/.git") 90 get_source_info_git("${path}" revision repository) 91 endif() 92endfunction() 93 94function(append_info name path) 95 get_source_info("${path}" revision repository) 96 string(STRIP "${revision}" revision) 97 string(STRIP "${repository}" repository) 98 file(APPEND "${HEADER_FILE}.txt" 99 "#define ${name}_REVISION \"${revision}\"\n") 100 file(APPEND "${HEADER_FILE}.txt" 101 "#define ${name}_REPOSITORY \"${repository}\"\n") 102endfunction() 103 104function(validate_inputs source_dirs names) 105 list(LENGTH source_dirs source_dirs_length) 106 list(LENGTH names names_length) 107 if (NOT source_dirs_length EQUAL names_length) 108 message(FATAL_ERROR 109 "GetSVN.cmake takes two arguments: a list of source directories, " 110 "and a list of names. Expected two lists must be of equal length, " 111 "but got ${source_dirs_length} source directories and " 112 "${names_length} names.") 113 endif() 114endfunction() 115 116if (DEFINED SOURCE_DIRS AND DEFINED NAMES) 117 validate_inputs("${SOURCE_DIRS}" "${NAMES}") 118 119 list(LENGTH SOURCE_DIRS source_dirs_length) 120 math(EXPR source_dirs_max_index ${source_dirs_length}-1) 121 foreach(index RANGE ${source_dirs_max_index}) 122 list(GET SOURCE_DIRS ${index} source_dir) 123 list(GET NAMES ${index} name) 124 append_info(${name} ${source_dir}) 125 endforeach() 126endif() 127 128# Allow -DFIRST_SOURCE_DIR arguments until Clang migrates to the new 129# -DSOURCE_DIRS argument. 130if(DEFINED FIRST_SOURCE_DIR) 131 append_info(${FIRST_NAME} "${FIRST_SOURCE_DIR}") 132 if(DEFINED SECOND_SOURCE_DIR) 133 append_info(${SECOND_NAME} "${SECOND_SOURCE_DIR}") 134 endif() 135endif() 136 137# Copy the file only if it has changed. 138execute_process(COMMAND ${CMAKE_COMMAND} -E copy_if_different 139 "${HEADER_FILE}.txt" "${HEADER_FILE}") 140file(REMOVE "${HEADER_FILE}.txt") 141 142