if(WIN32 OR UNIX OR APPLE OR IOS)
    include(FetchContent)

    if(NOT DEFINED MSDFGEN_REPO)
        set(MSDFGEN_REPO https://github.com/Chlumsky/msdfgen.git)
    endif ()

    if(NOT DEFINED MSDFGEN_ATRLAS_REPO)
        set(MSDFGEN_ATRLAS_REPO https://github.com/Chlumsky/msdf-atlas-gen.git)
    endif()

    if(NOT DEFINED VCPKG_REPO)
        set(VCPKG_REPO https://github.com/microsoft/vcpkg.git)
    endif()

    set(VCPKG_SRC_DIR "${CMAKE_BINARY_DIR}/_deps/vcpkg-src" CACHE INTERNAL "vcpkg source dir")
    if (NOT EXISTS ${VCPKG_SRC_DIR} OR VCPKG_EXECUTABLE STREQUAL "" OR NOT DEFINED VCPKG_EXECUTABLE)
        message("Cloning vcpkg...")
        FetchContent_Declare(
                vcpkg
                EXCLUDE_FROM_ALL
                GIT_REPOSITORY ${VCPKG_REPO}
                GIT_TAG master
                GIT_SHALLOW TRUE
        )
        FetchContent_MakeAvailable(vcpkg)    
        if (WIN32)
            execute_process(COMMAND "${VCPKG_SRC_DIR}/bootstrap-vcpkg.bat")
            set(VCPKG_EXECUTABLE "${VCPKG_SRC_DIR}/vcpkg.exe" CACHE INTERNAL "vcpkg executable")
        else()
            execute_process(COMMAND bash "${VCPKG_SRC_DIR}/bootstrap-vcpkg.sh")
            set(VCPKG_EXECUTABLE "${VCPKG_SRC_DIR}/vcpkg" CACHE INTERNAL "vcpkg executable")
        endif()
    endif()

    if (WIN32)
        set(TRIPLET x64-windows-static-md-release CACHE INTERNAL "triplet")
    elseif(UNIX AND NOT APPLE)
        set(TRIPLET x64-linux CACHE INTERNAL "triplet")
    elseif(APPLE AND NOT IOS)
        set(TRIPLET arm64-osx CACHE INTERNAL "triplet")
    elseif(IOS)
        set(TRIPLET arm64-ios CACHE INTERNAL "triplet")
    endif()

    execute_process(COMMAND ${VCPKG_EXECUTABLE} install freetype:${TRIPLET} libpng:${TRIPLET})
    set(CMAKE_TOOLCHAIN_FILE "${CMAKE_BINARY_DIR}/_deps/vcpkg-src/scripts/buildsystems/vcpkg.cmake" CACHE STRING "cmake toolchain")
    include("${VCPKG_SRC_DIR}/scripts/buildsystems/vcpkg.cmake")
    list(APPEND CMAKE_PREFIX_PATH "${VCPKG_SRC_DIR}/installed/${TRIPLET}/lib")
    list(APPEND CMAKE_PREFIX_PATH "${VCPKG_SRC_DIR}/installed/${TRIPLET}/include")

    set(MSDFGEN_DISABLE_SVG TRUE CACHE INTERNAL "disable msdfgen svg")
    set(MSDFGEN_USE_SKIA OFF CACHE BOOL "use skia" FORCE)
    set(MSDF_ATLAS_USE_SKIA OFF CACHE BOOL "use skia" FORCE)
    set(MSDF_ATLAS_MSDFGEN_EXTERNAL ON CACHE BOOL "do not build msdfgen submodule" FORCE)
    set(MSDFGEN_DYNAMIC_RUNTIME ON CACHE BOOL "msvc dynamic runtime" FORCE)
    set(MSDF_ATLAS_DYNAMIC_RUNTIME ON CACHE BOOL "msvc dynamic runtime" FORCE)

    FetchContent_Declare(
            msdfgen
            EXCLUDE_FROM_ALL
            GIT_REPOSITORY ${MSDFGEN_REPO}
            GIT_TAG v1.12
            GIT_SHALLOW TRUE
    )
    FetchContent_MakeAvailable(msdfgen)

    FetchContent_Declare(
            msdfgen_atlas
            EXCLUDE_FROM_ALL
            GIT_REPOSITORY ${MSDFGEN_ATRLAS_REPO}
            GIT_TAG master
            GIT_SHALLOW TRUE
    )
    FetchContent_MakeAvailable(msdfgen_atlas)
endif()

function(LinkMsdf TARGET)
    if (WIN32 OR UNIX OR APPLE OR IOS)
        target_link_libraries(${TARGET} PRIVATE msdfgen::msdfgen msdfgen::msdfgen-ext msdf-atlas-gen)
        if(WIN32)
            set(STATIC_LIB_EXT "lib")
            set(freetype_lib_name "freetype")
        else()
            set(STATIC_LIB_EXT "a")
            set(freetype_lib_name "libfreetype")
        endif()
        # link freetype first to fix linkage issues on linux
        target_link_libraries(${TARGET} PUBLIC "${VCPKG_SRC_DIR}/installed/${TRIPLET}/lib/${freetype_lib_name}.${STATIC_LIB_EXT}")
        file(GLOB installed_libs "${VCPKG_SRC_DIR}/installed/${TRIPLET}/lib/*.${STATIC_LIB_EXT}")
        foreach(lib ${installed_libs})
            get_filename_component(libname ${lib} NAME_WE)
            if (NOT ${libname} STREQUAL ${freetype_lib_name})
                target_link_libraries(${TARGET} PUBLIC ${lib})
            endif()
        endforeach()
    endif()
endfunction()