add_executable(fs_dir dir.cpp)
target_link_libraries(fs_dir ghc_filesystem)
if(CMAKE_CXX_COMPILER_ID MATCHES MSVC)
    target_compile_definitions(fs_dir PRIVATE _CRT_SECURE_NO_WARNINGS)
endif()

if ("${CMAKE_CXX_COMPILER_ID}" STREQUAL "Clang" AND (CMAKE_CXX_COMPILER_VERSION VERSION_EQUAL 7.0 OR CMAKE_CXX_COMPILER_VERSION VERSION_GREATER 7.0))
    if(APPLE)
        include_directories(/usr/local/opt/llvm/include)
        link_directories(/usr/local/opt/llvm/lib)
    endif()
    add_executable(std_fs_dir dir.cpp)
    set_property(TARGET std_fs_dir PROPERTY CXX_STANDARD 17)
    target_link_libraries(std_fs_dir -lc++fs)
endif()

if (CMAKE_COMPILER_IS_GNUCXX AND (CMAKE_CXX_COMPILER_VERSION VERSION_EQUAL 8.0 OR CMAKE_CXX_COMPILER_VERSION VERSION_GREATER 8.0))
    add_executable(std_fs_dir dir.cpp)
    set_property(TARGET std_fs_dir PROPERTY CXX_STANDARD 17)
    target_link_libraries(std_fs_dir -lstdc++fs)
endif()

if(CMAKE_CXX_COMPILER_ID MATCHES MSVC AND (CMAKE_CXX_COMPILER_VERSION VERSION_EQUAL 19.15 OR CMAKE_CXX_COMPILER_VERSION VERSION_GREATER 19.15))
    add_executable(std_fs_dir dir.cpp)
    set_property(TARGET std_fs_dir PROPERTY CXX_STANDARD 17)
	set_property(TARGET std_fs_dir PROPERTY CXX_STANDARD_REQUIRED ON)
	target_compile_options(std_fs_dir PRIVATE "/Zc:__cplusplus")
	target_compile_definitions(std_fs_dir PRIVATE _CRT_SECURE_NO_WARNINGS)
endif()