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#
# Copyright (c) 2017, Alliance for Open Media. All rights reserved
#
# This source code is subject to the terms of the BSD 2 Clause License and the
# Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License was
# not distributed with this source code in the LICENSE file, you can obtain it
# at www.aomedia.org/license/software. If the Alliance for Open Media Patent
# License 1.0 was not distributed with this source code in the PATENTS file, you
# can obtain it at www.aomedia.org/license/patent.
#
cmake_minimum_required(VERSION 3.5)
set(REQUIRED_ARGS "AOM_ROOT" "AOM_CONFIG_DIR" "GIT_EXECUTABLE"
"PERL_EXECUTABLE")
foreach(arg ${REQUIRED_ARGS})
if("${${arg}}" STREQUAL "")
message(FATAL_ERROR "${arg} must not be empty.")
endif()
endforeach()
include("${AOM_ROOT}/build/cmake/util.cmake")
# Generate the version string for this run.
unset(aom_version)
if(EXISTS "${GIT_EXECUTABLE}")
execute_process(COMMAND ${GIT_EXECUTABLE} --git-dir=${AOM_ROOT}/.git describe
OUTPUT_VARIABLE aom_version
ERROR_QUIET
RESULT_VARIABLE version_check_result)
if(${version_check_result} EQUAL 0)
string(STRIP "${aom_version}" aom_version)
# Remove the leading 'v' from the version string.
string(FIND "${aom_version}" "v" v_pos)
if(${v_pos} EQUAL 0)
string(SUBSTRING "${aom_version}" 1 -1 aom_version)
endif()
else()
set(aom_version "")
endif()
endif()
if("${aom_version}" STREQUAL "")
set(aom_version "${AOM_ROOT}/CHANGELOG")
endif()
unset(last_aom_version)
set(version_file "${AOM_CONFIG_DIR}/config/aom_version.h")
if(EXISTS "${version_file}")
extract_version_string("${version_file}" last_aom_version)
if("${aom_version}" MATCHES "CHANGELOG$")
set(aom_version "${last_aom_version}")
endif()
endif()
if(NOT "${aom_version}" STREQUAL "${last_aom_version}")
# TODO(tomfinegan): Perl dependency is unnecessary. CMake can do everything
# that is done by version.pl on its own (if a bit more verbosely...).
execute_process(COMMAND ${PERL_EXECUTABLE}
"${AOM_ROOT}/build/cmake/version.pl"
--version_data=${aom_version}
--version_filename=${version_file} VERBATIM)
endif()
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