src/lxc/compiler.h

   1 /* SPDX-License-Identifier: LGPL-2.1+ */
   2
   3 #ifndef __LXC_COMPILER_H
   4 #define __LXC_COMPILER_H
   5
   6 #ifndef _GNU_SOURCE
   7 #define _GNU_SOURCE 1
   8 #endif
   9
  10 #include "config.h"
  11
  12 #ifndef thread_local
  13 #if __STDC_VERSION__ >= 201112L &&    \
  14     !(defined(__STDC_NO_THREADS__) || \
  15       (defined(__GNU_LIBRARY__) && __GLIBC__ == 2 && __GLIBC_MINOR__ < 16))
  16 #define thread_local _Thread_local
  17 #else
  18 #define thread_local __thread
  19 #endif
  20 #endif
  21
  22 #ifndef __fallthrough
  23 #define __fallthrough /* fall through */
  24 #endif
  25
  26 #ifndef __noreturn
  27 #       if __STDC_VERSION__ >= 201112L
  28 #               if !IS_BIONIC
  29 #                       define __noreturn _Noreturn
  30 #               else
  31 #                       define __noreturn __attribute__((__noreturn__))
  32 #               endif
  33 #       elif IS_BIONIC
  34 #               define __noreturn __attribute__((__noreturn__))
  35 #       else
  36 #               define __noreturn __attribute__((noreturn))
  37 #       endif
  38 #endif
  39
  40 #ifndef __hot
  41 #       define __hot __attribute__((hot))
  42 #endif
  43
  44 #ifndef __returns_twice
  45 #define __returns_twice __attribute__((returns_twice))
  46 #endif
  47
  48 /* This attribute is required to silence clang warnings */
  49 #if defined(__GNUC__)
  50 #define __lxc_unused __attribute__ ((unused))
  51 #else
  52 #define __lxc_unused
  53 #endif
  54
  55 #define __cgfsng_ops
  56
  57 #endif /* __LXC_COMPILER_H */