请问GCC的编译识别宏是什么

发布于 2013-01-06 09:49:19 浏览：3908 订阅该版

3 个回答

bernard 2013-01-06

这家伙很懒，什么也没写！

```

/* Compiler Related Definitions */
#ifdef __CC_ARM                         /* ARM Compiler */
    #include <stdarg.h>
    #define SECTION(x)                  __attribute__((section(x)))
    #define UNUSED                      __attribute__((unused))
    #define ALIGN(n)                    __attribute__((aligned(n)))
    #define rt_inline                   static __inline
    /* module compiling */
    #ifdef RT_USING_MODULE
        #define RTT_API                 __declspec(dllimport)
    #else
        #define RTT_API                 __declspec(dllexport)
    #endif

#elif defined (__IAR_SYSTEMS_ICC__)     /* for IAR Compiler */
    #include <stdarg.h>
    #define SECTION(x)                  @ x
    #define UNUSED
    #define PRAGMA(x)                   _Pragma(#x)
    #define ALIGN(n)                    PRAGMA(data_alignment=n)
    #define rt_inline                   static inline
    #define RTT_API

#elif defined (__GNUC__)                /* GNU GCC Compiler */
    #ifdef RT_USING_NEWLIB
        #include <stdarg.h>
    #else
        #if __GNUC__ < 4
            typedef void *__sys_va_list;
            typedef __sys_va_list       va_list;
            #define __va_rounded_size(type) 
                (((sizeof(type) + sizeof(int) - 1) / sizeof(int)) * sizeof(int))
            #define va_start(ap, lastarg)   
                (ap = ((char *) &(lastarg) + __va_rounded_size(lastarg)))
            #define va_end(ap)          ((void)0)
            /*  little endian */
            #define va_arg(ap, type)    
                (ap = (__sys_va_list) ((char *)(ap) + __va_rounded_size(type)),  
                *((type *) (void *) ((char *)(ap) - __va_rounded_size(type))))
        #else
            typedef __builtin_va_list   __gnuc_va_list;
            typedef __gnuc_va_list      va_list;
            #define va_start(v,l)       __builtin_va_start(v,l)
            #define va_end(v)           __builtin_va_end(v)
            #define va_arg(v,l)         __builtin_va_arg(v,l)
        #endif
    #endif

#define SECTION(x)                  __attribute__((section(x)))
    #define UNUSED                      __attribute__((unused))
    #define ALIGN(n)                    __attribute__((aligned(n)))
    #define rt_inline                   static __inline
    #define RTT_API
#elif defined (__ADSPBLACKFIN__)        /* for VisualDSP++ Compiler */
    #include <stdarg.h>
    #define SECTION(x)                  __attribute__((section(x)))
    #define UNUSED                      __attribute__((unused))
    #define ALIGN(n)                    __attribute__((aligned(n)))
    #define rt_inline                   static inline
    #define RTT_API 
#elif defined (_MSC_VER)
    #include <stdarg.h>
    #define SECTION(x)
    #define UNUSED
    #define ALIGN(n)                    __declspec(align(n))
    #define rt_inline                   static __inline
    #define RTT_API
#endif

```