59 lines
1.5 KiB
C
59 lines
1.5 KiB
C
/* Which POSIX version to conform to, for utilities.
|
|
|
|
Copyright (C) 2002 Free Software Foundation, Inc.
|
|
|
|
This program is free software; you can redistribute it and/or modify it
|
|
under the terms of the GNU Library General Public License as published
|
|
by the Free Software Foundation; either version 2, or (at your option)
|
|
any later version.
|
|
|
|
This program 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
|
|
Library General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Library General Public
|
|
License along with this program; if not, write to the Free Software
|
|
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
|
|
USA. */
|
|
|
|
/* Written by Paul Eggert. */
|
|
|
|
#if HAVE_CONFIG_H
|
|
# include <config.h>
|
|
#endif
|
|
|
|
#include <limits.h>
|
|
|
|
#include <stdlib.h>
|
|
#if !HAVE_DECL_GETENV && !defined getenv
|
|
char *getenv ();
|
|
#endif
|
|
|
|
#if HAVE_UNISTD_H
|
|
# include <unistd.h>
|
|
#endif
|
|
#ifndef _POSIX2_VERSION
|
|
# define _POSIX2_VERSION 0
|
|
#endif
|
|
|
|
/* The POSIX version that utilities should conform to. The default is
|
|
specified by the system. */
|
|
|
|
int
|
|
posix2_version (void)
|
|
{
|
|
long int v = _POSIX2_VERSION;
|
|
char const *s = getenv ("_POSIX2_VERSION");
|
|
|
|
if (s && *s)
|
|
{
|
|
char *e;
|
|
long int i = strtol (s, &e, 10);
|
|
if (! *e)
|
|
v = i;
|
|
}
|
|
|
|
return v < INT_MIN ? INT_MIN : v < INT_MAX ? v : INT_MAX;
|
|
}
|