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| 1 #ifndef _FEATURES_H |
| 2 #define _FEATURES_H |
| 3 |
| 4 #if defined(_ALL_SOURCE) && !defined(_GNU_SOURCE) |
| 5 #define _GNU_SOURCE 1 |
| 6 #endif |
| 7 |
| 8 #if defined(_DEFAULT_SOURCE) && !defined(_BSD_SOURCE) |
| 9 #define _BSD_SOURCE 1 |
| 10 #endif |
| 11 |
| 12 #if !defined(_POSIX_SOURCE) && !defined(_POSIX_C_SOURCE) \ |
| 13 && !defined(_XOPEN_SOURCE) && !defined(_GNU_SOURCE) \ |
| 14 && !defined(_BSD_SOURCE) && !defined(__STRICT_ANSI__) |
| 15 #define _BSD_SOURCE 1 |
| 16 #define _XOPEN_SOURCE 700 |
| 17 #endif |
| 18 |
| 19 #if __STDC_VERSION__ >= 199901L |
| 20 #define __restrict restrict |
| 21 #elif !defined(__GNUC__) |
| 22 #define __restrict |
| 23 #endif |
| 24 |
| 25 #if __STDC_VERSION__ >= 199901L || defined(__cplusplus) |
| 26 #define __inline inline |
| 27 #endif |
| 28 |
| 29 #if __STDC_VERSION__ >= 201112L |
| 30 #elif defined(__GNUC__) |
| 31 #define _Noreturn __attribute__((__noreturn__)) |
| 32 #else |
| 33 #define _Noreturn |
| 34 #endif |
| 35 |
| 36 #endif |
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