| 12345678910111213141516171819 | menuconfig RT_USING_CPLUSPLUS    bool "Enable C++ features"    default nif RT_USING_CPLUSPLUS    config RT_USING_CPLUSPLUS11        bool "Enable C++11 standard multi-threading feature support"        default n        select RT_USING_POSIX_FS        select RT_USING_POSIX_STDIO        select RT_USING_PTHREADS        select RT_USING_RTC    config RT_USING_CPP_WRAPPER        bool "Enable RT-Thread APIs C++ wrapper"        default nendif
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