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include(CMakeParseArguments)
function(_compute_version_from_file)
set_property(DIRECTORY APPEND PROPERTY CMAKE_CONFIGURE_DEPENDS ${CMAKE_SOURCE_DIR}/VERSION)
if (NOT EXISTS ${CMAKE_SOURCE_DIR}/VERSION)
set(VERSION_FOUND 0 PARENT_SCOPE)
return()
endif ()
file(STRINGS ${CMAKE_SOURCE_DIR}/VERSION VERSION_FILE)
string(REPLACE " " ";" VERSION_FILE "${VERSION_FILE}")
cmake_parse_arguments(VERSION_FILE "" "RELEASE;PRERELEASE" "" ${VERSION_FILE})
if (DEFINED VERSION_FILE_RELEASE)
string(STRIP "${VERSION_FILE_RELEASE}" VERSION_FILE_RELEASE)
set(VERSION_IS_RELEASE 1 PARENT_SCOPE)
set(VERSION_FULL "${VERSION_FILE_RELEASE}" PARENT_SCOPE)
set(VERSION_FOUND 1 PARENT_SCOPE)
elseif (DEFINED VERSION_FILE_PRERELEASE)
string(STRIP "${VERSION_FILE_PRERELEASE}" VERSION_FILE_PRERELEASE)
set(VERSION_IS_RELEASE 0 PARENT_SCOPE)
set(VERSION_FULL "${VERSION_FILE_PRERELEASE}" PARENT_SCOPE)
set(VERSION_FOUND 1 PARENT_SCOPE)
else ()
set(VERSION_FOUND 0 PARENT_SCOPE)
endif ()
endfunction(_compute_version_from_file)
function(_compute_version_from_git)
set_property(DIRECTORY APPEND PROPERTY CMAKE_CONFIGURE_DEPENDS ${CMAKE_SOURCE_DIR}/.git)
if (NOT GIT_EXECUTABLE)
find_package(Git QUIET)
if (NOT GIT_FOUND)
return()
endif ()
endif (NOT GIT_EXECUTABLE)
# Git tag
execute_process(
COMMAND "${GIT_EXECUTABLE}" describe --tags --abbrev=0
WORKING_DIRECTORY "${CMAKE_SOURCE_DIR}"
RESULT_VARIABLE git_result
OUTPUT_VARIABLE git_tag
ERROR_VARIABLE git_error
OUTPUT_STRIP_TRAILING_WHITESPACE
ERROR_STRIP_TRAILING_WHITESPACE
)
if (NOT git_result EQUAL 0)
return()
endif (NOT git_result EQUAL 0)
if (git_tag MATCHES "^v?([0-9]+[.]?[0-9]*[.]?[0-9]*)(-[.0-9A-Za-z-]+)?([+][.0-9A-Za-z-]+)?$")
set(VERSION_LAST_RELEASE "${CMAKE_MATCH_1}")
else ()
return()
endif ()
# Git describe
execute_process(
COMMAND "${GIT_EXECUTABLE}" describe --tags
WORKING_DIRECTORY "${CMAKE_SOURCE_DIR}"
RESULT_VARIABLE git_result
OUTPUT_VARIABLE git_describe
ERROR_VARIABLE git_error
OUTPUT_STRIP_TRAILING_WHITESPACE
ERROR_STRIP_TRAILING_WHITESPACE
)
if (NOT git_result EQUAL 0)
return()
endif (NOT git_result EQUAL 0)
if ("${git_tag}" STREQUAL "${git_describe}")
set(VERSION_IS_RELEASE 1)
else ()
set(VERSION_IS_RELEASE 0)
if (git_describe MATCHES "-([0-9]+)-g([0-9a-f]+)$")
set(VERSION_TAG_OFFSET "${CMAKE_MATCH_1}")
set(VERSION_COMMIT_HASH "${CMAKE_MATCH_2}")
endif ()
execute_process(
COMMAND "${GIT_EXECUTABLE}" show --format=%cd --date=format:%Y%m%d -s
WORKING_DIRECTORY "${CMAKE_SOURCE_DIR}"
RESULT_VARIABLE git_result
OUTPUT_VARIABLE git_time
ERROR_VARIABLE git_error
OUTPUT_STRIP_TRAILING_WHITESPACE
ERROR_STRIP_TRAILING_WHITESPACE
)
if (NOT git_result EQUAL 0)
return()
endif (NOT git_result EQUAL 0)
set(VERSION_COMMIT_DATE "${git_time}")
endif ()
if (NOT VERSION_IS_RELEASE)
set(VERSION_SUFFIX "~git${VERSION_TAG_OFFSET}.${VERSION_COMMIT_DATE}.${VERSION_COMMIT_HASH}")
else (NOT VERSION_IS_RELEASE)
set(VERSION_SUFFIX "")
endif (NOT VERSION_IS_RELEASE)
set(VERSION_IS_RELEASE ${VERSION_IS_RELEASE} PARENT_SCOPE)
set(VERSION_FULL "${VERSION_LAST_RELEASE}${VERSION_SUFFIX}" PARENT_SCOPE)
set(VERSION_FOUND 1 PARENT_SCOPE)
endfunction(_compute_version_from_git)
_compute_version_from_file()
if (NOT VERSION_FOUND)
_compute_version_from_git()
endif (NOT VERSION_FOUND)
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