package/musl-compat-headers/cdefs.h

   1 /* Copyright (C) 2016 Yann E. MORIN <yann.morin.1998@free.fr>
   2  *
   3  * This file is in the Public Domain.
   4  *
   5  * For jurisdictions in which the Public Domain does not exist
   6  * or it is not otherwise applicable, this file is licensed CC0
   7  * (Creative Commons Zero).
   8  */
   9
  10 /* This file contains definitions for non-standard macros defined by
  11  * glibc, but quite commonly used in packages.
  12  *
  13  * Because they are non-standard, musl does not define those macros.
  14  * It does not provide cdefs.h either.
  15  *
  16  * This file is a compatibility header written from scratch, to be
  17  * installed when the C library is musl.
  18  *
  19  * Not all macros from the glibc's cdefs.h are available, only the
  20  * most commonly used ones.
  21  *
  22  * Please refer to the glibc documentation and source code for
  23  * explanations about those macros.
  24  */
  25
  26 #ifndef BUILDROOT_SYS_CDEFS_H
  27 #define BUILDROOT_SYS_CDEFS_H
  28
  29 /* Function prototypes. */
  30 #undef __P
  31 #define __P(arg) arg
  32
  33 /* C declarations in C++ mode. */
  34 #ifdef __cplusplus
  35 # define __BEGIN_DECLS extern "C" {
  36 # define __END_DECLS   }
  37 #else
  38 # define __BEGIN_DECLS
  39 # define __END_DECLS
  40 #endif
  41
  42 /* Don't throw exceptions in C functions. */
  43 #ifndef __cplusplus
  44 # define __THROW  __attribute__ ((__nothrow__))
  45 # define __NTH(f) __attribute__ ((__nothrow__)) f
  46 #else
  47 # define __THROW
  48 # define __NTH(f) f
  49 #endif
  50
  51 #endif /* ifndef BUILDROOT_SYS_CDEFS_H */