| 1 | /* Setting environment variables.
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| 2 | Copyright (C) 2001-2004 Free Software Foundation, Inc.
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| 3 |
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| 4 | This program is free software; you can redistribute it and/or modify
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| 5 | it under the terms of the GNU General Public License as published by
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| 6 | the Free Software Foundation; either version 2, or (at your option)
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| 7 | any later version.
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| 8 |
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| 9 | This program is distributed in the hope that it will be useful,
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| 10 | but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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| 12 | GNU General Public License for more details.
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| 13 |
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| 14 | You should have received a copy of the GNU General Public License
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| 15 | along with this program; if not, write to the Free Software Foundation,
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| 16 | Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */
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| 17 |
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| 18 | #if HAVE_SETENV || HAVE_UNSETENV
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| 19 |
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| 20 | /* Get setenv(), unsetenv() declarations. */
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| 21 | # include <stdlib.h>
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| 22 |
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| 23 | #endif
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| 24 |
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| 25 | #ifdef __cplusplus
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| 26 | extern "C" {
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| 27 | #endif
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| 28 |
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| 29 | #if !HAVE_SETENV
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| 30 |
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| 31 | /* Set NAME to VALUE in the environment.
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| 32 | If REPLACE is nonzero, overwrite an existing value. */
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| 33 | extern int setenv (const char *name, const char *value, int replace);
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| 34 |
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| 35 | #endif
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| 36 |
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| 37 | #if HAVE_UNSETENV
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| 38 |
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| 39 | # if VOID_UNSETENV
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| 40 | /* On some systems, unsetenv() returns void.
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| 41 | This is the case for FreeBSD 4.8, NetBSD 1.6, OpenBSD 3.4. */
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| 42 | # define unsetenv(name) ((unsetenv)(name), 0)
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| 43 | # endif
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| 44 |
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| 45 | #else
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| 46 |
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| 47 | /* Remove the variable NAME from the environment. */
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| 48 | extern int unsetenv (const char *name);
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| 49 |
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| 50 | #endif
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| 51 |
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| 52 | #ifdef __cplusplus
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| 53 | }
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| 54 | #endif
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