function(dts_add_spine_runtime target runtime_root)
    if(NOT EXISTS "${runtime_root}/include/spine/spine.h")
        message(FATAL_ERROR "Missing spine-cpp source at ${runtime_root}")
    endif()

    file(GLOB_RECURSE runtime_sources CONFIGURE_DEPENDS
        "${runtime_root}/src/*.cpp")
    file(GLOB_RECURSE runtime_headers CONFIGURE_DEPENDS
        "${runtime_root}/include/*.h")

    add_library(${target} STATIC ${runtime_sources} ${runtime_headers})
    target_include_directories(${target} PUBLIC "${runtime_root}/include")
    set_target_properties(${target} PROPERTIES POSITION_INDEPENDENT_CODE ON)

    if(MSVC)
        target_compile_options(${target} PRIVATE /W3 /utf-8)
    else()
        target_compile_options(${target} PRIVATE -Wno-deprecated-declarations)
    endif()
endfunction()

function(dts_add_runtime_adapter suffix version_line source_directory runtime_subdirectory)
    set(runtime_root
        "${CMAKE_CURRENT_SOURCE_DIR}/third_party/spine-runtimes/${version_line}/${runtime_subdirectory}")
    set(runtime_target "dts_spine_cpp_${suffix}")
    set(adapter_target "dts_runtime_${suffix}")
    dts_add_spine_runtime(${runtime_target} "${runtime_root}")
    add_library(${adapter_target} SHARED
        "${CMAKE_CURRENT_SOURCE_DIR}/runtime-plugins/${source_directory}/RuntimeAdapter.cpp")
    target_include_directories(${adapter_target} PRIVATE
        "${CMAKE_CURRENT_SOURCE_DIR}/runtime-api")
    target_link_libraries(${adapter_target} PRIVATE ${runtime_target})
    set_target_properties(${adapter_target} PROPERTIES
        CXX_VISIBILITY_PRESET hidden
        VISIBILITY_INLINES_HIDDEN YES
        OUTPUT_NAME "dts-runtime-${version_line}")
endfunction()