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set(CastXML_VERSION "0.1")
if(EXISTS ${CastXML_SOURCE_DIR}/.git)
find_package(Git)
if(GIT_FOUND)
macro(_git)
execute_process(
COMMAND ${GIT_EXECUTABLE} ${ARGN}
WORKING_DIRECTORY ${CastXML_SOURCE_DIR}
RESULT_VARIABLE _git_res
OUTPUT_VARIABLE _git_out OUTPUT_STRIP_TRAILING_WHITESPACE
ERROR_VARIABLE _git_err ERROR_STRIP_TRAILING_WHITESPACE
)
endmacro()
endif()
endif()
if(EXISTS ${CastXML_SOURCE_DIR}/VERSION)
# Read version provided in file with source tarball.
file(STRINGS ${CastXML_SOURCE_DIR}/VERSION CastXML_VERSION
LIMIT_COUNT 1 LIMIT_INPUT 1024)
elseif(COMMAND _git)
# Compute version relative to annotated version tags, if any.
_git(describe --match "v[0-9]*" --dirty)
if(_git_out MATCHES "^v([0-9].*)$")
# Use version computed by 'git describe'.
set(CastXML_VERSION "${CMAKE_MATCH_1}")
else()
# Compute version currently checked out, possibly dirty.
_git(rev-parse --verify -q --short=7 HEAD)
if(_git_out MATCHES "^([0-9a-f]+)$")
set(CastXML_VERSION "${CastXML_VERSION}-g${CMAKE_MATCH_1}")
_git(update-index -q --refresh)
_git(diff-index --name-only HEAD --)
if(_git_out)
set(CastXML_VERSION "${CastXML_VERSION}-dirty")
endif()
else()
set(CastXML_VERSION "${CastXML_VERSION}-git")
endif()
endif()
elseif("$Format:%h$" MATCHES "^([0-9a-f]+)$")
# Use version exported by 'git archive'.
set(CastXML_VERSION "${CastXML_VERSION}-g${CMAKE_MATCH_1}")
else()
# Generic development version.
set(CastXML_VERSION "${CastXML_VERSION}-git")
endif()
if(CastXML_VERSION MATCHES "^([0-9]+)\\.([0-9]+)(\\.([0-9]+))?")
set(CastXML_VERSION_MAJOR "${CMAKE_MATCH_1}")
set(CastXML_VERSION_MINOR "${CMAKE_MATCH_2}")
if(CMAKE_MATCH_4)
set(CastXML_VERSION_PATCH "${CMAKE_MATCH_4}")
else()
set(CastXML_VERSION_PATCH 0)
endif()
else()
message(FATAL_ERROR "Failed to extract version components from '${CastXML_VERSION}'")
endif()
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