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#
# KIM-API: An API for interatomic models
# Copyright (c) 2013--2022, Regents of the University of Minnesota.
# All rights reserved.
#
# Contributors:
# Richard Berger
# Christoph Junghans
# Ryan S. Elliott
#
# SPDX-License-Identifier: LGPL-2.1-or-later
#
# This library is free software; you can redistribute it and/or
# modify it under the terms of the GNU Lesser General Public
# License as published by the Free Software Foundation; either
# version 2.1 of the License, or (at your option) any later version.
#
# This library is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
# Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public License
# along with this library; if not, write to the Free Software Foundation,
# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
#
#
# Release: This file is part of the kim-api.git repository.
#
set(PROJECT_VERSION_PRERELEASE "git" CACHE STRING "Project SemVer prerelease string") # cache to allow change from command line
set(_build_metadata "") # avoid uninitialized variable warning
find_package(Git QUIET)
if(${GIT_FOUND})
include(FindPackageMessage)
find_package_message(Git "Found Git: (${GIT_EXECUTABLE})" "found")
execute_process(COMMAND ${GIT_EXECUTABLE} -C "${PROJECT_SOURCE_DIR}" rev-parse --show-toplevel
OUTPUT_STRIP_TRAILING_WHITESPACE
OUTPUT_VARIABLE _toplevel
RESULT_VARIABLE _isGitRepo
ERROR_QUIET
)
if((_isGitRepo EQUAL 0) AND ("${_toplevel}" STREQUAL "${PROJECT_SOURCE_DIR}"))
# set configuration to depend on _depend_file
#
# For details and discussion on the below approach, see:
# https://discourse.cmake.org/t/support-for-git-describe-output-in-a-semver-prerelease-string/1714?u=relliott
# https://github.com/ellio167/cmake-and-git-describe
#
# Overall this is a use case only of concern to active developers of the
# kim-api project. So, a better solution is not really necessary.
#
set(_git_describe_sentinel "git-describe-sentinel")
set(_depend_file "${CMAKE_CURRENT_BINARY_DIR}/.${_git_describe_sentinel}-file")
find_program(_touch touch)
if(${CMAKE_MINOR_VERSION} GREATER 11) # use file(GLOB <var> CONFIGURE_DEPENDS ...) mechanism
if(EXISTS "${_depend_file}")
file(REMOVE "${_depend_file}")
endif()
file(GLOB _t CONFIGURE_DEPENDS "${_depend_file}")
unset(_t)
file(TOUCH "${_depend_file}")
elseif(_touch) # use system 'touch' with future timestamp and CMAKE_CONFIGURE_DEPENDS mechanism
string(TIMESTAMP _time "1%m%d%H%M")
math(EXPR _time "${_time} + 1")
string(REGEX REPLACE "^.(.*)$" "\\1" _time "${_time}")
execute_process(COMMAND ${_touch} -t "${_time}" "${_depend_file}") # set modification/access time 1min in the future
unset(_time)
set_property(DIRECTORY "${CURRENT_SOURCE_DIR}" APPEND PROPERTY CMAKE_CONFIGURE_DEPENDS "${_depend_file}")
else() # use CMAKE_CONFIGURE_DEPENDS property mechanism [has a number of corner cases]
execute_process(COMMAND ${CMAKE_COMMAND} -E touch "${_depend_file}")
add_custom_target(${_git_describe_sentinel}-target ALL COMMAND ${CMAKE_COMMAND} -E touch "${_depend_file}")
set_property(DIRECTORY "${CURRENT_SOURCE_DIR}" APPEND PROPERTY CMAKE_CONFIGURE_DEPENDS "${_depend_file}")
endif()
unset(_git_describe_sentinel)
unset(_depend_file)
execute_process(COMMAND ${GIT_EXECUTABLE} -C "${PROJECT_SOURCE_DIR}" update-index -q --refresh
TIMEOUT 5
OUTPUT_QUIET
ERROR_QUIET
)
if(READTHEDOCS)
set(_DIRTY "")
else()
set(_DIRTY ".dirty")
endif()
execute_process(
COMMAND ${GIT_EXECUTABLE} -C "${PROJECT_SOURCE_DIR}" describe --dirty=${_DIRTY} --broken=.broken --always
OUTPUT_STRIP_TRAILING_WHITESPACE
OUTPUT_VARIABLE _git_describe
)
unset(_DIRTY)
set(_build_metadata "${_git_describe}")
unset(_git_describe)
endif()
endif()
if(NOT "${_build_metadata}" STREQUAL "")
string(APPEND _build_metadata ".")
endif()
string(APPEND _build_metadata "${CMAKE_CXX_COMPILER_ID}.${CMAKE_C_COMPILER_ID}.${CMAKE_Fortran_COMPILER_ID}")
set(PROJECT_VERSION_BUILD_METADATA "${_build_metadata}") # do not cache
unset(_build_metadata)
set(_version_string "${PROJECT_VERSION}")
if(PROJECT_VERSION_PRERELEASE)
set(_version_string "${_version_string}-${PROJECT_VERSION_PRERELEASE}")
endif()
set(PROJECT_VERSION_STRING_WITHOUT_BUILD_METADATA "${_version_string}") # used by pkg-config; do not cache
if(PROJECT_VERSION_BUILD_METADATA)
set(_version_string "${_version_string}+${PROJECT_VERSION_BUILD_METADATA}")
endif()
set(PROJECT_VERSION_STRING "${_version_string}") # do not cache
unset(_version_string)
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