src/lxc/compiler.h

   1 /* liblxcapi
   2  *
   3  * Copyright © 2018 Christian Brauner <christian.brauner@ubuntu.com>.
   4  * Copyright © 2018 Canonical Ltd.
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License version 2, as
   8  * published by the Free Software Foundation.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License along
  16  * with this program; if not, write to the Free Software Foundation, Inc.,
  17  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  18  */
  19
  20 #ifndef __LXC_COMPILER_H
  21 #define __LXC_COMPILER_H
  22
  23 #include "config.h"
  24
  25 #ifndef thread_local
  26 #if __STDC_VERSION__ >= 201112L &&    \
  27     !(defined(__STDC_NO_THREADS__) || \
  28       (defined(__GNU_LIBRARY__) && __GLIBC__ == 2 && __GLIBC_MINOR__ < 16))
  29 #define thread_local _Thread_local
  30 #else
  31 #define thread_local __thread
  32 #endif
  33 #endif
  34
  35 #if defined(__GNUC__) && __GNUC__ >= 7 || defined(__clang__)
  36 #define __fallthrough __attribute__((fallthrough))
  37 #else
  38 #define __fallthrough
  39 #endif
  40
  41 #ifndef _noreturn_
  42 #if __STDC_VERSION__ >= 201112L
  43 #define __noreturn _Noreturn
  44 #else
  45 #define __noreturn __attribute__((noreturn))
  46 #endif
  47 #endif
  48
  49 #endif /* __LXC_COMPILER_H */