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 3 of the License, or
9 (at your option) any later version.
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
17 along with this program. If not, see <http://www.gnu.org/licenses/>. */
19 /* Written by Paul Eggert. */
29 #ifndef _POSIX2_VERSION
30 # define _POSIX2_VERSION 0
33 #ifndef DEFAULT_POSIX2_VERSION
34 # define DEFAULT_POSIX2_VERSION _POSIX2_VERSION
37 /* The POSIX version that utilities should conform to. The default is
38 specified by the system. */
43 long int v = DEFAULT_POSIX2_VERSION;
44 char const *s = getenv ("_POSIX2_VERSION");
49 long int i = strtol (s, &e, 10);
54 return v < INT_MIN ? INT_MIN : v < INT_MAX ? v : INT_MAX;