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/*
* libcompat - system compatibility library
* compat.h - system compatibility declarations
*
* Copyright © 1995 Ian Jackson <ian@chiark.greenend.org.uk>
* Copyright © 2008, 2009 Guillem Jover <guillem@debian.org>
*
* This is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef COMPAT_H
#define COMPAT_H
#ifdef __cplusplus
extern "C" {
#endif
#ifndef HAVE_OFFSETOF
#define offsetof(st, m) ((size_t)&((st *)NULL)->m)
#endif
#ifndef HAVE_O_NOFOLLOW
#define O_NOFOLLOW 0
#endif
/*
* Define WCOREDUMP if we don't have it already, coredumps won't be
* detected, though.
*/
#ifndef HAVE_WCOREDUMP
#define WCOREDUMP(x) 0
#endif
#ifndef HAVE_VA_COPY
#include <string.h>
#define va_copy(dest, src) memcpy(&(dest), &(src), sizeof(va_list))
#endif
#include <strnlen.h>
#ifndef HAVE_C99_SNPRINTF
#include <stddef.h>
#include <stdarg.h>
int snprintf(char *str, size_t n, char const *fmt, ...);
int vsnprintf(char *buf, size_t maxsize, const char *fmt, va_list args);
#endif
#ifndef HAVE_ASPRINTF
#include <stdarg.h>
int asprintf(char **str, char const *fmt, ...);
int vasprintf(char **str, const char *fmt, va_list args);
#endif
#ifndef HAVE_STRNDUP
#include <stddef.h>
#undef strndup
char *strndup(const char *s, size_t n);
#endif
#ifndef HAVE_STRERROR
const char *strerror(int);
#endif
#ifndef HAVE_STRSIGNAL
const char *strsignal(int);
#endif
#ifndef HAVE_SCANDIR
struct dirent;
int scandir(const char *dir, struct dirent ***namelist,
int (*filter)(const struct dirent *),
int (*cmp)(const void *, const void *));
#endif
#ifndef HAVE_ALPHASORT
int alphasort(const void *a, const void *b);
#endif
#ifndef HAVE_UNSETENV
int unsetenv(const char *x);
#endif
#ifdef __cplusplus
}
#endif
#endif /* COMPAT_H */
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