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# Copyright 2015 Marcus D. Hanwell <marcus.hanwell@kitware.com>
# Copyright 2017-2018 ckb-next Development Team <ckb-next@googlegroups.com>
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are met:
#
# 1. Redistributions of source code must retain the above copyright notice,
# this list of conditions and the following disclaimer.
# 2. Redistributions in binary form must reproduce the above copyright
# notice, this list of conditions and the following disclaimer in the
# documentation and/or other materials provided with the distribution.
# 3. Neither the name of the copyright holder nor the names of its
# contributors may be used to endorse or promote products derived from this
# software without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
# ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
# LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
# CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
# POSSIBILITY OF SUCH DAMAGE.
# Used to determine the version for ckb-next source using "git describe", if git
# is found. On success sets following variables in caller's scope:
# ${var_prefix}_VERSION
# ${var_prefix}_VERSION_MAJOR
# ${var_prefix}_VERSION_MINOR
# ${var_prefix}_VERSION_PATCH
# ${var_prefix}_VERSION_PATCH_EXTRA
# ${var_prefix}_VERSION_IS_RELEASE if patch-extra is empty.
#
# If git is not found, or git describe cannot be run successfully, then these
# variables are left unchanged and a warning message is printed.
#
# Arguments are:
# source_dir : Source directory
# git_command : git executable
# var_prefix : project name
function(determine_version source_dir git_command var_prefix)
set(major)
set(minor)
set(patch)
set(full)
set(patch_extra)
if (NOT ${${var_prefix}_VERSION_IS_RELEASE})
if (EXISTS ${git_command})
execute_process(
COMMAND ${git_command} describe --tags
WORKING_DIRECTORY ${source_dir}
RESULT_VARIABLE result
OUTPUT_VARIABLE output
ERROR_QUIET
OUTPUT_STRIP_TRAILING_WHITESPACE)
if (${result} EQUAL 0)
string(REGEX MATCH "([0-9]+)\\.([0-9]+)\\.([0-9]+)[-]*(.*)"
version_matches ${output})
if (CMAKE_MATCH_0)
# message(STATUS "Determined Git Version: ${CMAKE_MATCH_0}")
set(full ${CMAKE_MATCH_0})
set(major ${CMAKE_MATCH_1})
set(minor ${CMAKE_MATCH_2})
set(patch ${CMAKE_MATCH_3})
set(patch_extra ${CMAKE_MATCH_4})
endif ()
else ()
message("\
Git directory to deduce precise version has not been not found.\n\
Consider cloning the project with git instead of downloading an archive.\n\
For example:\n\
git clone -b master --single-branch https://github.com/ckb-next/ckb-next.git")
endif ()
else ()
message("Git executable not found.")
endif ()
if (full)
set(${var_prefix}_VERSION ${full} PARENT_SCOPE)
set(${var_prefix}_VERSION_MAJOR ${major} PARENT_SCOPE)
set(${var_prefix}_VERSION_MINOR ${minor} PARENT_SCOPE)
set(${var_prefix}_VERSION_PATCH ${patch} PARENT_SCOPE)
set(${var_prefix}_VERSION_PATCH_EXTRA ${patch_extra} PARENT_SCOPE)
if ("${major}.${minor}.${patch}" STREQUAL "${full}")
set(${var_prefix}_VERSION_IS_RELEASE TRUE PARENT_SCOPE)
message(STATUS "${var_prefix} version: ${full} (Release)")
else ()
set(${var_prefix}_VERSION_IS_RELEASE FALSE PARENT_SCOPE)
message(STATUS "${var_prefix} version: ${full} (Non-release)")
endif ()
else()
set(${var_prefix}_VERSION ${full} "${${var_prefix}_VERSION}-unknown" PARENT_SCOPE)
set(${var_prefix}_VERSION_IS_RELEASE FALSE PARENT_SCOPE)
message(STATUS "${var_prefix} version: ${${var_prefix}_VERSION}-unknown (Non-release)")
endif ()
endif()
endfunction()
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