CMakeLists.txt

#*****************************************************************
#
#    Copyright © 2017-2020 kohnech, lnwhome All rights reserved
#
#    mpeg2ts - mpeg2ts 3rd-party
#
#    This file is part of mpeg2ts (Mpeg2 Transport Stream Library).
#
#    Unless you have obtained mpeg2ts under a different license,
#    this version of mpeg2ts is mpeg2ts|GPL.
#    Mpeg2ts|GPL is free software; you can redistribute it and/or
#    modify it under the terms of the GNU General Public License as
#    published by the Free Software Foundation; either version 2,
#    or (at your option) any later version.
#
#    Mpeg2ts|GPL 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 General Public License for more details.
#
#    You should have received a copy of the GNU General Public License
#    along with mpeg2ts|GPL; see the file COPYING. If not, write to
#    the Free Software Foundation, 59 Temple Place - Suite 330,
#    Boston, MA 02111-1307, USA.
#
#*******************************************************************/
cmake_minimum_required(VERSION 3.0)
project(3rd-party)


# Must use GNUInstallDirs to install libraries into correct
# locations on all platforms.
include(GNUInstallDirs)

include(ExternalProject)

############# plog

ExternalProject_Add(
    plog
    URL ${CMAKE_CURRENT_SOURCE_DIR}/plog-${PLOG_VERSION}.tar.gz
    INSTALL_DIR ${CMAKE_CURRENT_BINARY_DIR}/plog-${PLOG_VERSION}
    CMAKE_ARGS  -D CMAKE_BUILD_TYPE=Release
                -D CMAKE_INSTALL_PREFIX=<INSTALL_DIR>
                -D PLOG_BUILD_SAMPLES=OFF
)

############# nlohmann/json

ExternalProject_Add(
    json
    URL ${CMAKE_CURRENT_SOURCE_DIR}/json-${NLOHMANN_VERSION}.tar.gz
    INSTALL_DIR ${CMAKE_CURRENT_BINARY_DIR}/json-${NLOHMANN_VERSION}
    CMAKE_ARGS  -D CMAKE_BUILD_TYPE=Release
                -D BUILD_TESTING=OFF
                -D CMAKE_INSTALL_PREFIX=<INSTALL_DIR>
)


############ google test

#-------------------------------------------------------------
# Taken from https://github.com/google/googletest/tree/master/googletest#incorporating-into-an-existing-cmake-project
#-------------------------------------------------------------
if(NOT USE_DOCKER AND NOT ENABLE_WEBASSEMBLY AND ENABLE_TESTS)
    message("NOT using Docker! Downloading & configuring google test...")
    if (APPLE)
        set(CMAKE_CXX_STANDARD 11)
        message("Setting CMAKE_CXX_STANDARD: ${CMAKE_CXX_STANDARD}")
    endif(APPLE)

    # Download and unpack googletest at configure time
    configure_file(${CMAKE_CURRENT_SOURCE_DIR}/CMakeLists_googletest.txt.in ${CMAKE_CURRENT_BINARY_DIR}/googletest-download/CMakeLists.txt)
    execute_process(COMMAND ${CMAKE_COMMAND} -G "${CMAKE_GENERATOR}" .
        RESULT_VARIABLE result
        WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}/googletest-download 
    )
    if(result)
        message(FATAL_ERROR "CMake step for googletest failed: ${result}")
    endif()
    execute_process(COMMAND ${CMAKE_COMMAND} --build .
        RESULT_VARIABLE result
        WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}/googletest-download )
    if(result)
        message(FATAL_ERROR "Build step for googletest failed: ${result}")
    endif()

    # Prevent overriding the parent project's compiler/linker
    # settings on Windows
    set(gtest_force_shared_crt ON CACHE BOOL "" FORCE)

    # Add googletest directly to our build. This defines
    # the gtest and gtest_main targets.
    add_subdirectory(${CMAKE_CURRENT_BINARY_DIR}/googletest-src
        ${CMAKE_CURRENT_BINARY_DIR}/googletest-build
        EXCLUDE_FROM_ALL)

    # The gtest/gtest_main targets carry header search path
    # dependencies automatically when using CMake 2.8.11 or
    # later. Otherwise we have to add them here ourselves.
    if (CMAKE_VERSION VERSION_LESS 2.8.11)
        include_directories("${gtest_SOURCE_DIR}/include")
    endif()
endif(NOT USE_DOCKER AND NOT ENABLE_WEBASSEMBLY AND ENABLE_TESTS)


############ google benchmark


if(NOT USE_DOCKER AND NOT ENABLE_WEBASSEMBLY AND ENABLE_TESTS)
    message("NOT using Docker! Downloading & configuring google benchmark...")

    set(BENCHMARK_ENABLE_GTEST_TESTS OFF CACHE BOOL "Disable GTest")
    # Build release version
    set(DCMAKE_BUILD_TYPE RELEASE)
    # If you want to self-test benchmark lib too, turn me ON
    #
    set(BENCHMARK_ENABLE_TESTING OFF)

    # Download and unpack benchmark at configure time
    configure_file(${CMAKE_CURRENT_SOURCE_DIR}/CMakeLists_benchmark.txt.in ${CMAKE_CURRENT_BINARY_DIR}/benchmark-download/CMakeLists.txt)
    execute_process(COMMAND ${CMAKE_COMMAND} -G "${CMAKE_GENERATOR}" .
        RESULT_VARIABLE result
        WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}/benchmark-download )
    if(result)
        message(FATAL_ERROR "CMake step for benchmark failed: ${result}")
    endif()
    execute_process(COMMAND ${CMAKE_COMMAND} --build .
        RESULT_VARIABLE result
        WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}/benchmark-download )
    if(result)
        message(FATAL_ERROR "Build step for benchmark failed: ${result}")
    endif()


    # Prevent overriding the parent project's compiler/linker
    # settings on Windows
    #set(gtest_force_shared_crt ON CACHE BOOL "" FORCE)

    # Add benchmark directly to our build. This defines
    # the gtest and gtest_main targets.
    add_subdirectory(${CMAKE_CURRENT_BINARY_DIR}/benchmark-src
                     ${CMAKE_CURRENT_BINARY_DIR}/benchmark-build
                     EXCLUDE_FROM_ALL)

    # The gtest/gtest_main targets carry header search path
    # dependencies automatically when using CMake 2.8.11 or
    # later. Otherwise we have to add them here ourselves.
    if (CMAKE_VERSION VERSION_LESS 2.8.11)
        include_directories("${gtest_SOURCE_DIR}/include")
    endif()
endif(NOT USE_DOCKER AND NOT ENABLE_WEBASSEMBLY AND ENABLE_TESTS)