Porting to Renesas MCU without OS about emqtt5 HOT 1 OPEN

#elif defined(RA6M5)
    #include <stdlib.h>
    #include <string.h>
    // We need BSD socket here and TCP_NODELAY
    #include <whereis/socket.h> // We need close, connect, bind, setsockopt, getsockopt, fcntl 
    // We need gethostbyname or getaddrinfo
    #include <whereis/netdb.h>
    // We need va_args for printf like dump functions
    #include <stdarg.h>

    #ifndef DontWantUINT8
        typedef unsigned char uint8;
    #endif
    #ifndef DontWantUINT32
        typedef unsigned int uint32;
    #endif
    #ifndef DontWantUINT16
        typedef unsigned short uint16;
    #endif

    #ifndef DontWantUINT64
        typedef unsigned long long uint64;
    #endif

    #ifndef DontWantINT8
        typedef signed char int8;
    #endif
    #ifndef DontWantINT32
        typedef signed int int32;
    #endif
    #ifndef DontWantINT16
        typedef signed short int16;
    #endif

    #ifndef DontWantINT64
        typedef long long int64;
    #endif
    #ifndef DontWantNativeInt
        typedef intptr_t nativeint;
    #endif

    #define PF_LLD  "%lld"
    #define PF_LLU  "%llu"

    /** Unless you run on embedded OS, you'll not need those functions
        @return int value you need to pass to leaveAtomicSection */
    extern "C" int enterAtomicSection() { return 0; } // You might need `asm volatile("": : :"memory")` here, if you use GCC
    /** Unless you run on embedded OS, you'll not need those functions */
    extern "C" void leaveAtomicSection(int) { }

#else // Previously: line 268

#elif defined (RA6M5)
            *(char*)42 = 0; // This will crash the CPU instantly. If the debugger is attached, this should trigger an exception, you need to find the return address for this function on the stack and jump back to the return address to find where it failed, or place a breakpoint on this line, skip the instruction and return step by step to find where it failed.
    #else

#ifdef _WIN32
    typedef HANDLE              HTHREAD;
    typedef HANDLE              HMUTEX;
    typedef HANDLE              OEVENT;
#else
    typedef pthread_t           HTHREAD;
    typedef pthread_mutex_t     HMUTEX;
    typedef pthread_mutex_t     OEVENT;
#endif

#ifdef _WIN32
    typedef HANDLE              HTHREAD;
    typedef HANDLE              HMUTEX;
    typedef HANDLE              OEVENT;
#elif defined(RA6M5)
   // This isn't used anywhere anyway
   typedef void * HTHREAD;
   typedef int HMUTEX;
   typedef int OEVENT;
#else
    typedef pthread_t           HTHREAD;
    typedef pthread_mutex_t     HMUTEX;
    typedef pthread_mutex_t     OEVENT;
#endif