1/* Setting environment variables. 2 Copyright (C) 2001-2004, 2007 Free Software Foundation, Inc. 3 4 This program is free software: you can redistribute it and/or modify 5 it under the terms of the GNU General Public License as published by 6 the Free Software Foundation; either version 3 of the License, or 7 (at your option) any later version. 8 9 This program is distributed in the hope that it will be useful, 10 but WITHOUT ANY WARRANTY; without even the implied warranty of 11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 12 GNU General Public License for more details. 13 14 You should have received a copy of the GNU General Public License 15 along with this program. If not, see <http://www.gnu.org/licenses/>. */ 16 17#if HAVE_SETENV || HAVE_UNSETENV 18 19/* Get setenv(), unsetenv() declarations. */ 20# include <stdlib.h> 21 22#endif 23 24#ifdef __cplusplus 25extern "C" { 26#endif 27 28#if !HAVE_SETENV 29 30/* Set NAME to VALUE in the environment. 31 If REPLACE is nonzero, overwrite an existing value. */ 32extern int setenv (const char *name, const char *value, int replace); 33 34#endif 35 36#if HAVE_UNSETENV 37 38# if VOID_UNSETENV 39/* On some systems, unsetenv() returns void. 40 This is the case for FreeBSD 4.8, NetBSD 1.6, OpenBSD 3.4. */ 41# define unsetenv(name) ((unsetenv)(name), 0) 42# endif 43 44#else 45 46/* Remove the variable NAME from the environment. */ 47extern int unsetenv (const char *name); 48 49#endif 50 51#ifdef __cplusplus 52} 53#endif 54