GNU_C.h

#ifndef JSON_GNU_C_HEADER
#define JSON_GNU_C_HEADER

#ifdef __GNUC__

    #define json_deprecated(method, warning) method __attribute__((deprecated))

    #if (__GNUC__ >= 3)
       #define JSON_GCC_VERSION (__GNUC__ * 10000 + __GNUC_MINOR__ * 100 + __GNUC_PATCHLEVEL__)
    #else
       #define JSON_GCC_VERSION (__GNUC__ * 10000 + __GNUC_MINOR__ * 100)
    #endif

    #if (JSON_GCC_VERSION >= 40300)
       #define json_hot __attribute__ ((hot))
       #define json_cold __attribute__ ((cold))
       #define json_pure json_nothrow __attribute__ ((pure, hot))
       #define json_malloc_attr json_nothrow __attribute__ ((malloc, hot))

       /* Can do priorities */
       #if (JSON_WRITE_PRIORITY == HIGH)
          #define json_write_priority __attribute__ ((hot))
       #elif (JSON_WRITE_PRIORITY == LOW)
          #define json_write_priority __attribute__ ((cold))
       #else
          #define json_write_priority
       #endif

       #if (JSON_READ_PRIORITY == HIGH)
          #define json_read_priority __attribute__ ((hot))
       #elif (JSON_READ_PRIORITY == LOW)
          #define json_read_priority __attribute__ ((cold))
       #else
          #define json_read_priority
       #endif

       #define json_likely(x) __builtin_expect((long)((bool)(x)),1)
       #define json_unlikely(x) __builtin_expect((long)((bool)(x)),0)
    #else
       #if (JSON_GCC_VERSION >= 29600)
          #define json_pure json_nothrow __attribute__ ((pure))
          #define json_likely(x) __builtin_expect((long)((bool)(x)),1)
          #define json_unlikely(x) __builtin_expect((long)((bool)(x)),0)
       #else
          #define json_pure json_nothrow
          #define json_likely(x) x
          #define json_unlikely(x) x
       #endif

       #define json_malloc_attr json_nothrow __attribute__ ((malloc))
       #define json_write_priority
       #define json_read_priority
       #define json_hot
       #define json_cold
    #endif

    #define json_nothrow throw()
    #define json_throws(x) throw(x)

    #ifdef JSON_LESS_MEMORY
       #define PACKED(x) :x __attribute__ ((packed))
       #define BITS(x) :x
    #endif

#endif

#endif