if (MGE_USE_SYSTEM_LIB)
    find_package(Flatbuffers REQUIRED)
    message("Using system provided Flatbuffers ${Flatbuffers_VERSION}")
    include(cmake/BuildFlatBuffers.cmake)
    return()
endif()
if(MSVC OR WIN32)
    message("-- add flags flatc for clang-cl build")
    set(FLATC_FLAGS "")
    set(FLATC_FLAGS "${FLATC_FLAGS} -Wno-error=unknown-argument -Wno-error=c++98-compat -Wno-error=reserved-id-macro")
    set(FLATC_FLAGS "${FLATC_FLAGS} -Wno-error=sign-conversion -Wno-error=exceptions -Wno-error=argument-outside-range")
    set(FLATC_FLAGS "${FLATC_FLAGS} -Wno-error=delete-non-virtual-dtor -Wno-error=ignored-attributes -Wno-error=format")
    set(FLATC_FLAGS "${FLATC_FLAGS} -Wno-error=sign-compare -Wno-error=unused-private-field -Wno-error=braced-scalar-init")
    set(FLATC_FLAGS "${FLATC_FLAGS} -Wno-error=return-type-c-linkage -Wno-error=invalid-noreturn -Wno-error=c++98-compat-pedantic")
    set(FLATC_FLAGS "${FLATC_FLAGS} -Wno-error=extra-semi-stmt -Wno-error=missing-prototypes -Wno-error=documentation-unknown-command")
    set(FLATC_FLAGS "${FLATC_FLAGS} -Wno-error=missing-variable-declarations  -Wno-error=nonportable-system-include-path")
    set(FLATC_FLAGS "${FLATC_FLAGS} -Wno-error=exit-time-destructors -Wno-error=unused-macros -Wno-error=global-constructors")
    set(FLATC_FLAGS "${FLATC_FLAGS} -Wno-error=switch-enum -Wno-error=missing-noreturn -Wno-error=float-equal")

    set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${FLATC_FLAGS}")
    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${FLATC_FLAGS}")
endif()

option(FLATBUFFERS_BUILD_TESTS "" OFF)
add_subdirectory(${PROJECT_SOURCE_DIR}/third_party/flatbuffers
                 ${CMAKE_CURRENT_BINARY_DIR}/flatbuffers)
add_library(flatbuffers::flatbuffers ALIAS flatbuffers)