Add: introduce CMake for project management

CMake works on all our supported platforms, like MSVC, Mingw, GCC,
Clang, and many more. It allows for a single way of doing things,
so no longer we need shell scripts and vbs scripts to work on all
our supported platforms.

Additionally, CMake allows to generate project files for like MSVC,
KDevelop, etc.

This heavily reduces the lines of code we need to support multiple
platforms from a project perspective.

Addtiionally, this heavily improves our detection of libraries, etc.

src/CMakeLists.txt

@@ -0,0 +1,479 @@
+add_subdirectory(3rdparty)
+add_subdirectory(ai)
+add_subdirectory(blitter)
+add_subdirectory(core)
+add_subdirectory(game)
+add_subdirectory(lang)
+add_subdirectory(linkgraph)
+add_subdirectory(misc)
+add_subdirectory(music)
+add_subdirectory(network)
+add_subdirectory(os)
+add_subdirectory(pathfinder)
+add_subdirectory(saveload)
+add_subdirectory(script)
+add_subdirectory(settingsgen)
+add_subdirectory(sound)
+add_subdirectory(spriteloader)
+add_subdirectory(strgen)
+add_subdirectory(table)
+add_subdirectory(video)
+add_subdirectory(widgets)
+
+add_files(
+    viewport_sprite_sorter_sse4.cpp
+    CONDITION SSE_FOUND
+)
+if (CMAKE_CXX_COMPILER_ID STREQUAL "GNU" OR CMAKE_CXX_COMPILER_ID STREQUAL "Clang" OR CMAKE_CXX_COMPILER_ID STREQUAL "AppleClang")
+    set_compile_flags(
+        viewport_sprite_sorter_sse4.cpp
+        COMPILE_FLAGS -msse4.1)
+endif (CMAKE_CXX_COMPILER_ID STREQUAL "GNU" OR CMAKE_CXX_COMPILER_ID STREQUAL "Clang" OR CMAKE_CXX_COMPILER_ID STREQUAL "AppleClang")
+
+add_files(
+    aircraft.h
+    aircraft_cmd.cpp
+    aircraft_gui.cpp
+    airport.cpp
+    airport.h
+    airport_gui.cpp
+    animated_tile.cpp
+    animated_tile_func.h
+    articulated_vehicles.cpp
+    articulated_vehicles.h
+    autoreplace.cpp
+    autoreplace_base.h
+    autoreplace_cmd.cpp
+    autoreplace_func.h
+    autoreplace_gui.cpp
+    autoreplace_gui.h
+    autoreplace_type.h
+    autoslope.h
+    base_consist.cpp
+    base_consist.h
+    base_media_base.h
+    base_media_func.h
+    base_station_base.h
+    bitmap_type.h
+    bmp.cpp
+    bmp.h
+    bootstrap_gui.cpp
+    bridge.h
+    bridge_gui.cpp
+    bridge_map.cpp
+    bridge_map.h
+    build_vehicle_gui.cpp
+    cargo_type.h
+    cargoaction.cpp
+    cargoaction.h
+    cargomonitor.cpp
+    cargomonitor.h
+    cargopacket.cpp
+    cargopacket.h
+    cargotype.cpp
+    cargotype.h
+    cheat.cpp
+    cheat_func.h
+    cheat_gui.cpp
+    cheat_type.h
+    clear_cmd.cpp
+    clear_func.h
+    clear_map.h
+    cmd_helper.h
+    command.cpp
+    command_func.h
+    command_type.h
+    company_base.h
+    company_cmd.cpp
+    company_func.h
+    company_gui.cpp
+    company_gui.h
+    company_manager_face.h
+    company_type.h
+    console.cpp
+    console_cmds.cpp
+    console_func.h
+    console_gui.cpp
+    console_gui.h
+    console_internal.h
+    console_type.h
+    cpu.cpp
+    cpu.h
+    crashlog.cpp
+    crashlog.h
+    currency.cpp
+    currency.h
+    date.cpp
+    date_func.h
+    date_gui.cpp
+    date_gui.h
+    date_type.h
+    debug.cpp
+    debug.h
+    dedicated.cpp
+    depot.cpp
+    depot_base.h
+    depot_cmd.cpp
+    depot_func.h
+    depot_gui.cpp
+    depot_map.h
+    depot_type.h
+    direction_func.h
+    direction_type.h
+    disaster_vehicle.cpp
+    disaster_vehicle.h
+    dock_gui.cpp
+    driver.cpp
+    driver.h
+    economy.cpp
+    economy_base.h
+    economy_func.h
+    economy_type.h
+    effectvehicle.cpp
+    effectvehicle_base.h
+    effectvehicle_func.h
+    elrail.cpp
+    elrail_func.h
+    engine.cpp
+    engine_base.h
+    engine_func.h
+    engine_gui.cpp
+    engine_gui.h
+    engine_type.h
+    error.h
+    error_gui.cpp
+    fileio.cpp
+    fileio_func.h
+    fileio_type.h
+    fios.cpp
+    fios.h
+    fios_gui.cpp
+    fontcache.cpp
+    fontcache.h
+    fontdetection.cpp
+    fontdetection.h
+    framerate_gui.cpp
+    framerate_type.h
+    gamelog.cpp
+    gamelog.h
+    gamelog_internal.h
+    genworld.cpp
+    genworld.h
+    genworld_gui.cpp
+    gfx.cpp
+    gfx_func.h
+    gfx_layout.cpp
+    gfx_layout.h
+    gfx_type.h
+    gfxinit.cpp
+    gfxinit.h
+    goal.cpp
+    goal_base.h
+    goal_gui.cpp
+    goal_type.h
+    graph_gui.cpp
+    graph_gui.h
+    ground_vehicle.cpp
+    ground_vehicle.hpp
+    group.h
+    group_cmd.cpp
+    group_gui.cpp
+    group_gui.h
+    group_type.h
+    gui.h
+    guitimer_func.h
+    heightmap.cpp
+    heightmap.h
+    highscore.cpp
+    highscore.h
+    highscore_gui.cpp
+    hotkeys.cpp
+    hotkeys.h
+    house.h
+    house_type.h
+    industry.h
+    industry_cmd.cpp
+    industry_gui.cpp
+    industry_map.h
+    industry_type.h
+    industrytype.h
+    ini.cpp
+    ini_load.cpp
+    ini_type.h
+    intro_gui.cpp
+    landscape.cpp
+    landscape.h
+    landscape_type.h
+    language.h
+    livery.h
+    main_gui.cpp
+    map.cpp
+    map_func.h
+    map_type.h
+    misc.cpp
+    misc_cmd.cpp
+    misc_gui.cpp
+    mixer.cpp
+    mixer.h
+    music.cpp
+    music_gui.cpp
+    newgrf.cpp
+    newgrf.h
+    newgrf_airport.cpp
+    newgrf_airport.h
+    newgrf_airporttiles.cpp
+    newgrf_airporttiles.h
+    newgrf_animation_base.h
+    newgrf_animation_type.h
+    newgrf_callbacks.h
+    newgrf_canal.cpp
+    newgrf_canal.h
+    newgrf_cargo.cpp
+    newgrf_cargo.h
+    newgrf_class.h
+    newgrf_class_func.h
+    newgrf_commons.cpp
+    newgrf_commons.h
+    newgrf_config.cpp
+    newgrf_config.h
+    newgrf_debug.h
+    newgrf_debug_gui.cpp
+    newgrf_engine.cpp
+    newgrf_engine.h
+    newgrf_generic.cpp
+    newgrf_generic.h
+    newgrf_gui.cpp
+    newgrf_house.cpp
+    newgrf_house.h
+    newgrf_industries.cpp
+    newgrf_industries.h
+    newgrf_industrytiles.cpp
+    newgrf_industrytiles.h
+    newgrf_object.cpp
+    newgrf_object.h
+    newgrf_profiling.cpp
+    newgrf_profiling.h
+    newgrf_properties.h
+    newgrf_railtype.cpp
+    newgrf_railtype.h
+    newgrf_roadtype.cpp
+    newgrf_roadtype.h
+    newgrf_sound.cpp
+    newgrf_sound.h
+    newgrf_spritegroup.cpp
+    newgrf_spritegroup.h
+    newgrf_station.cpp
+    newgrf_station.h
+    newgrf_storage.cpp
+    newgrf_storage.h
+    newgrf_text.cpp
+    newgrf_text.h
+    newgrf_town.cpp
+    newgrf_town.h
+    newgrf_townname.cpp
+    newgrf_townname.h
+    news_func.h
+    news_gui.cpp
+    news_gui.h
+    news_type.h
+    object.h
+    object_base.h
+    object_cmd.cpp
+    object_gui.cpp
+    object_map.h
+    object_type.h
+    openttd.cpp
+    openttd.h
+    order_backup.cpp
+    order_backup.h
+    order_base.h
+    order_cmd.cpp
+    order_func.h
+    order_gui.cpp
+    order_type.h
+    osk_gui.cpp
+    pbs.cpp
+    pbs.h
+    progress.cpp
+    progress.h
+    querystring_gui.h
+    rail.cpp
+    rail.h
+    rail_cmd.cpp
+    rail_gui.cpp
+    rail_gui.h
+    rail_map.h
+    rail_type.h
+    rev.h
+    road.cpp
+    road.h
+    road_cmd.cpp
+    road_cmd.h
+    road_func.h
+    road_gui.cpp
+    road_gui.h
+    road_internal.h
+    road_map.cpp
+    road_map.h
+    road_type.h
+    roadstop.cpp
+    roadstop_base.h
+    roadveh.h
+    roadveh_cmd.cpp
+    roadveh_gui.cpp
+    safeguards.h
+    screenshot_gui.cpp
+    screenshot_gui.h
+    screenshot.cpp
+    screenshot.h
+    settings.cpp
+    settings_func.h
+    settings_gui.cpp
+    settings_gui.h
+    settings_internal.h
+    settings_type.h
+    ship.h
+    ship_cmd.cpp
+    ship_gui.cpp
+    signal.cpp
+    signal_func.h
+    signal_type.h
+    signs.cpp
+    signs_base.h
+    signs_cmd.cpp
+    signs_func.h
+    signs_gui.cpp
+    signs_type.h
+    slope_func.h
+    slope_type.h
+    smallmap_gui.cpp
+    smallmap_gui.h
+    sortlist_type.h
+    sound.cpp
+    sound_func.h
+    sound_type.h
+    sprite.cpp
+    sprite.h
+    spritecache.cpp
+    spritecache.h
+    station.cpp
+    station_base.h
+    station_cmd.cpp
+    station_func.h
+    station_gui.cpp
+    station_gui.h
+    station_kdtree.h
+    station_map.h
+    station_type.h
+    statusbar_gui.cpp
+    statusbar_gui.h
+    stdafx.h
+    story.cpp
+    story_base.h
+    story_gui.cpp
+    story_type.h
+    strgen/strgen.h
+    string.cpp
+    string_base.h
+    string_func.h
+    string_type.h
+    stringfilter.cpp
+    stringfilter_type.h
+    strings.cpp
+    strings_func.h
+    strings_type.h
+    subsidy.cpp
+    subsidy_base.h
+    subsidy_func.h
+    subsidy_gui.cpp
+    subsidy_type.h
+    tar_type.h
+    terraform_cmd.cpp
+    terraform_gui.cpp
+    terraform_gui.h
+    textbuf.cpp
+    textbuf_gui.h
+    textbuf_type.h
+    texteff.cpp
+    texteff.hpp
+    textfile_gui.cpp
+    textfile_gui.h
+    textfile_type.h
+    tgp.cpp
+    tgp.h
+    thread.h
+    tile_cmd.h
+    tile_map.cpp
+    tile_map.h
+    tile_type.h
+    tilearea.cpp
+    tilearea_type.h
+    tilehighlight_func.h
+    tilehighlight_type.h
+    tilematrix_type.hpp
+    timetable.h
+    timetable_cmd.cpp
+    timetable_gui.cpp
+    toolbar_gui.cpp
+    toolbar_gui.h
+    town.h
+    town_cmd.cpp
+    town_gui.cpp
+    town_kdtree.h
+    town_map.h
+    town_type.h
+    townname.cpp
+    townname_func.h
+    townname_type.h
+    track_func.h
+    track_type.h
+    train.h
+    train_cmd.cpp
+    train_gui.cpp
+    transparency.h
+    transparency_gui.cpp
+    transparency_gui.h
+    transport_type.h
+    tree_cmd.cpp
+    tree_gui.cpp
+    tree_map.h
+    tunnel_map.cpp
+    tunnel_map.h
+    tunnelbridge.h
+    tunnelbridge_cmd.cpp
+    tunnelbridge_map.h
+    vehicle.cpp
+    vehicle_base.h
+    vehicle_cmd.cpp
+    vehicle_func.h
+    vehicle_gui.cpp
+    vehicle_gui.h
+    vehicle_gui_base.h
+    vehicle_type.h
+    vehiclelist.cpp
+    vehiclelist.h
+    viewport.cpp
+    viewport_func.h
+    viewport_gui.cpp
+    viewport_kdtree.h
+    viewport_sprite_sorter.h
+    viewport_type.h
+    void_cmd.cpp
+    void_map.h
+    water.h
+    water_cmd.cpp
+    water_map.h
+    waypoint.cpp
+    waypoint_base.h
+    waypoint_cmd.cpp
+    waypoint_func.h
+    waypoint_gui.cpp
+    widget.cpp
+    widget_type.h
+    window.cpp
+    window_func.h
+    window_gui.h
+    window_type.h
+    zoom_func.h
+    zoom_type.h
+)