Portable build framework for OpenNTPD
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/*
* Public domain
* err.h compatibility shim
*/
#ifdef HAVE_ERR_H
#include_next <err.h>
#else
#ifndef LIBCOMPAT_ERR_H
#define LIBCOMPAT_ERR_H
#include <errno.h>
#include <stdarg.h>
#include <stdio.h>
#include <string.h>
extern char *__progname;
static inline _warn(int err, const char *format, ...)
__attribute__ ((__format__ (__printf__, 2, 3)));
static inline _warn(int err, const char *format, ...)
{
va_list args;
va_start(args, format);
fprintf(stderr, "%s: ", __progname);
if (format != NULL) {
vfprintf(stderr, format, args);
if (err)
fprintf(stderr, ": ");
}
if (err)
fprintf(stderr, "%s", strerror(err));
fprintf(stderr, "\n");
va_end(args);
}
#define err(exitcode, format, args...) \
do { warn(format, ## args); exit(exitcode); } while (0)
#define errx(exitcode, format, args...) \
do { warnx(format, ## args); exit(exitcode); } while (0)
#define warn(format, args...) \
_warn(errno, format, ## args)
#define warnx(format, args...) \
_warn(0, format, ## args)
#endif
#endif