1 /* Which POSIX version to conform to, for utilities.
3 Copyright (C) 2002, 2003, 2004, 2005, 2006 Free Software
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2, or (at your option)
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License along
17 with this program; if not, write to the Free Software Foundation,
18 Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */
20 /* Written by Paul Eggert. */
30 #ifndef _POSIX2_VERSION
31 # define _POSIX2_VERSION 0
34 #ifndef DEFAULT_POSIX2_VERSION
35 # define DEFAULT_POSIX2_VERSION _POSIX2_VERSION
38 /* The POSIX version that utilities should conform to. The default is
39 specified by the system. */
44 long int v = DEFAULT_POSIX2_VERSION;
45 char const *s = getenv ("_POSIX2_VERSION");
50 long int i = strtol (s, &e, 10);
55 return v < INT_MIN ? INT_MIN : v < INT_MAX ? v : INT_MAX;