diff options
Diffstat (limited to 'cmake')
-rw-r--r-- | cmake/modules/VersionGen.cmake | 78 |
1 files changed, 78 insertions, 0 deletions
diff --git a/cmake/modules/VersionGen.cmake b/cmake/modules/VersionGen.cmake new file mode 100644 index 00000000..340455b3 --- /dev/null +++ b/cmake/modules/VersionGen.cmake @@ -0,0 +1,78 @@ +# Redistribution and use is allowed according to the terms of the BSD license. +# +# Copyright (c) 2011 Peter Johnson + +macro (VERSION_GEN _version _version_file _default_version) + set (_vn "v${_default_version}") + + # First see if there is a version file (included in release tarballs), + # then try git-describe, then default. + if (EXISTS "${CMAKE_SOURCE_DIR}/version") + file (STRINGS "${CMAKE_SOURCE_DIR}/version" _version_strs LIMIT_COUNT 1) + list (GET _version_strs 0 _version_strs0) + if (NOT (${_version_strs0} STREQUAL "")) + set (_vn "v${_version_strs0}") + endif (${_version_strs0}) + elseif (EXISTS "${CMAKE_SOURCE_DIR}/.git") + execute_process (COMMAND git describe --match "v[0-9]*" --abbrev=4 HEAD + RESULT_VARIABLE _git_result + OUTPUT_VARIABLE _git_vn + ERROR_QUIET + OUTPUT_STRIP_TRAILING_WHITESPACE) + + if (_git_result EQUAL 0) + # Special handling until we get a more recent tag on the master + # branch + if (_git_vn MATCHES "^v0[.]1[.]0") + execute_process (COMMAND git merge-base v${_default_version} HEAD + OUTPUT_VARIABLE _merge_base + ERROR_QUIET + OUTPUT_STRIP_TRAILING_WHITESPACE) + #message (STATUS "Merge base: ${_merge_base}") + + execute_process (COMMAND git rev-list ${_merge_base}..HEAD + OUTPUT_VARIABLE _rev_list + ERROR_QUIET) + string (REGEX MATCHALL "[^\n]*\n" _rev_list_lines "${_rev_list}") + #message (STATUS "Rev list: ${_rev_list_lines}") + list (LENGTH _rev_list_lines _vn1) + + execute_process (COMMAND git rev-list --max-count=1 --abbrev-commit --abbrev=4 HEAD + OUTPUT_VARIABLE _vn2 + ERROR_QUIET + OUTPUT_STRIP_TRAILING_WHITESPACE) + + set (_git_vn "v${_default_version}-${_vn1}-g${_vn2}") + endif (_git_vn MATCHES "^v0[.]1[.]0") + + # Append -dirty if there are local changes + execute_process (COMMAND git update-index -q --refresh) + execute_process (COMMAND git diff-index --name-only HEAD -- + OUTPUT_VARIABLE _git_vn_dirty) + if (_git_vn_dirty) + set (_git_vn "${_git_vn}-dirty") + endif (_git_vn_dirty) + + # Substitute . for - in the result + string (REPLACE "-" "." _vn "${_git_vn}") + endif (_git_result EQUAL 0) + endif (EXISTS "${CMAKE_SOURCE_DIR}/version") + + # Strip leading "v" from version + #message (STATUS "_vn: ${_vn}") + string (REGEX REPLACE "^v*(.+)" "\\1" _vn "${_vn}") + + # Update version file if required + if (EXISTS ${_version_file}) + file (STRINGS ${_version_file} _version_strs LIMIT_COUNT 1) + list (GET _version_strs 0 _vc) + else (EXISTS ${_version_file}) + set (_vc "unset") + endif (EXISTS ${_version_file}) + if (NOT ("${_vn}" STREQUAL "${_vc}")) + file (WRITE ${_version_file} "${_vn}") + endif (NOT ("${_vn}" STREQUAL "${_vc}")) + + # Set output version variable + set (${_version} ${_vn}) +endmacro (VERSION_GEN) |