if(PROJECT_ENABLE_FMT)
  if(PROJECT_BUILD)
    find_package(fmt ${FMT_VERSION} REQUIRED)

    add_definitions(-DPROJECT_ENABLE_FMT)

    include_directories(BEFORE SYSTEM
      ${FMT_INCLUDE_DIRS}
    )

    link_libraries(
      fmt::fmt
    ) 
  elseif(NOT PROJECT_IS_MINGW OR CMAKE_HOST_WIN32)
    ExternalProject_Add(fmt_project
      PREFIX external
      URL ${PROJECT_3RD_PARTY_DIR}/fmt-${FMT_VERSION}.tar.gz
      URL_HASH SHA256=1250e4cc58bf06ee631567523f48848dc4596133e163f02615c97f78bab6c811
      LIST_SEPARATOR |
      CMAKE_ARGS ${PROJECT_EXTERNAL_CMAKE_FLAGS}
        -DBUILD_SHARED_LIBS=${PROJECT_BUILD_SHARED_LIBS}
        -DBUILD_STATIC_LIBS=ON
    )

    set(PROJECT_DEPENDENCIES 
      ${PROJECT_DEPENDENCIES}
      fmt_project
    )
  endif()
endif()