cmake_minimum_required(VERSION 3.7) project(pt2-clone) option(EXTERNAL_LIBFLAC "use external(system) flac library" OFF) find_package(SDL2 REQUIRED)set(CMAKE_RUNTIME_OUTPUT_DIRECTORY "${pt2-clone_SOURCE_DIR}/release/other/") file(GLOB pt2-clone_SRC    "${pt2-clone_SOURCE_DIR}/src/*.c"    "${pt2-clone_SOURCE_DIR}/src/modloaders/*.c"    "${pt2-clone_SOURCE_DIR}/src/smploaders/*.c"    "${pt2-clone_SOURCE_DIR}/src/gfx/*.c") add_executable(pt2-clone ${pt2-clone_SRC}) target_include_directories(pt2-clone SYSTEM    PRIVATE ${SDL2_INCLUDE_DIRS}) if("${SDL2_LIBRARIES}" STREQUAL "")    message(WARNING "SDL2_LIBRARIES wasn't set, manually setting to SDL2::SDL2")    set(SDL2_LIBRARIES "SDL2::SDL2")endif() target_link_libraries(pt2-clone    PRIVATE m ${SDL2_LIBRARIES})    target_compile_definitions(pt2-clone    PRIVATE HAS_LIBFLAC)    if(EXTERNAL_LIBFLAC)    find_package(PkgConfig REQUIRED)    pkg_check_modules(FLAC REQUIRED IMPORTED_TARGET flac)    target_compile_definitions(pt2-clone        PRIVATE EXTERNAL_LIBFLAC)    target_link_libraries(pt2-clone        PRIVATE PkgConfig::FLAC)else()    file(GLOB flac_SRCS        "${pt2-clone_SOURCE_DIR}/src/libflac/*.c")    target_sources(pt2-clone PRIVATE ${flac_SRCS})endif() install(TARGETS pt2-clone    RUNTIME DESTINATION bin)