1 # CMake project that writes Subversion revision information to a header.
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
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.
12 # Chop off cmake/modules/GetSVN.cmake
13 get_filename_component(LLVM_DIR "${CMAKE_SCRIPT_MODE_FILE}" PATH)
14 get_filename_component(LLVM_DIR "${LLVM_DIR}" PATH)
15 get_filename_component(LLVM_DIR "${LLVM_DIR}" PATH)
17 # Handle strange terminals
20 macro(get_source_info_svn path revision repository)
21 # If svn is a bat file, find_program(Subversion) doesn't find it.
22 # Explicitly search for that here; Subversion_SVN_EXECUTABLE will override
23 # the find_program call in FindSubversion.cmake.
24 find_program(Subversion_SVN_EXECUTABLE NAMES svn svn.bat)
26 # FindSubversion does not work with symlinks. See PR 8437
27 if (NOT IS_SYMLINK "${path}")
28 find_package(Subversion)
31 subversion_wc_info( ${path} Project )
32 if (Project_WC_REVISION)
33 set(${revision} ${Project_WC_REVISION} PARENT_SCOPE)
36 set(${repository} ${Project_WC_URL} PARENT_SCOPE)
41 macro(get_source_info_git_svn path revision repository)
42 find_program(git_executable NAMES git git.exe git.cmd)
44 execute_process(COMMAND ${git_executable} svn info
45 WORKING_DIRECTORY ${path}
47 RESULT_VARIABLE git_result
48 OUTPUT_VARIABLE git_output)
49 if (git_result EQUAL 0)
50 string(REGEX REPLACE "^(.*\n)?Revision: ([^\n]+).*"
51 "\\2" git_svn_rev "${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)
60 macro(get_source_info_git path revision repository)
61 find_program(git_executable NAMES git git.exe git.cmd)
63 execute_process(COMMAND ${git_executable} log -1 --pretty=format:%H
64 WORKING_DIRECTORY ${path}
66 RESULT_VARIABLE git_result
67 OUTPUT_VARIABLE git_output)
68 if (git_result EQUAL 0)
69 set(${revision} ${git_output} PARENT_SCOPE)
71 execute_process(COMMAND ${git_executable} remote -v
72 WORKING_DIRECTORY ${path}
74 RESULT_VARIABLE git_result
75 OUTPUT_VARIABLE git_output)
76 if (git_result EQUAL 0)
77 string(REGEX REPLACE "^(.*\n)?[^ \t]+[ \t]+([^ \t\n]+)[ \t]+\\(fetch\\).*"
78 "\\2" git_url "${git_output}")
79 set(${repository} "${git_url}" PARENT_SCOPE)
84 function(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)
94 function(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")
104 function(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)
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.")
116 if (DEFINED SOURCE_DIRS AND DEFINED NAMES)
117 validate_inputs("${SOURCE_DIRS}" "${NAMES}")
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} ${source_dir})
128 # Allow -DFIRST_SOURCE_DIR arguments until Clang migrates to the new
129 # -DSOURCE_DIRS argument.
130 if(DEFINED FIRST_SOURCE_DIR)
131 append_info(${FIRST_NAME} "${FIRST_SOURCE_DIR}")
132 if(DEFINED SECOND_SOURCE_DIR)
133 append_info(${SECOND_NAME} "${SECOND_SOURCE_DIR}")
137 # Copy the file only if it has changed.
138 execute_process(COMMAND ${CMAKE_COMMAND} -E copy_if_different
139 "${HEADER_FILE}.txt" "${HEADER_FILE}")
140 file(REMOVE "${HEADER_FILE}.txt")