49 lines
1.1 KiB
C
49 lines
1.1 KiB
C
|
#ifndef _FEATURES_H
|
||
|
|
#define _FEATURES_H
|
||
|
|
|
||
|
|
#ifdef _ALL_SOURCE
|
||
|
|
#define _GNU_SOURCE 1
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#if !defined(_POSIX_SOURCE) && !defined(_POSIX_C_SOURCE) \
|
||
|
|
&& !defined(_XOPEN_SOURCE) && !defined(_GNU_SOURCE) \
|
||
|
|
&& !defined(_BSD_SOURCE) && !defined(__STRICT_ANSI__)
|
||
|
|
#define _BSD_SOURCE 1
|
||
|
|
#define _XOPEN_SOURCE 700
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#if __STDC_VERSION__ >= 199901L
|
||
|
|
#define __restrict restrict
|
||
|
|
#elif !defined(__GNUC__)
|
||
|
|
#define __restrict
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#if __STDC_VERSION__ >= 199901L || defined(__cplusplus)
|
||
|
|
#define __inline inline
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#if __STDC_VERSION__ >= 201112L
|
||
|
|
#elif defined(__GNUC__)
|
||
|
|
#define _Noreturn __attribute__((__noreturn__))
|
||
|
|
#else
|
||
|
|
#define _Noreturn
|
||
|
|
#endif
|
||
|
|
|
||
|
|
/* Convenience macros to test the versions of glibc and gcc.
|
||
|
|
Use them like this:
|
||
|
|
#if __GNUC_PREREQ (2,8)
|
||
|
|
... code requiring gcc 2.8 or later ...
|
||
|
|
#endif
|
||
|
|
Note - they won't work for gcc1 or glibc1, since the _MINOR macros
|
||
|
|
were not defined then. */
|
||
|
|
#if defined __GNUC__ && defined __GNUC_MINOR__
|
||
|
|
# define __GNUC_PREREQ(maj, min) \
|
||
|
|
((__GNUC__ << 16) + __GNUC_MINOR__ >= ((maj) << 16) + (min))
|
||
|
|
#else
|
||
|
|
# define __GNUC_PREREQ(maj, min) 0
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#include <sys/glibc-types.h>
|
||
|
|
|
||
|
|
#endif
|