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35a88fa5 | 1 | /* Declare the environ system variable. |
219d1afa | 2 | Copyright (C) 2015-2018 Free Software Foundation, Inc. |
35a88fa5 IS |
3 | |
4 | This file is part of the libiberty library. | |
5 | Libiberty is free software; you can redistribute it and/or | |
6 | modify it under the terms of the GNU Library General Public | |
7 | License as published by the Free Software Foundation; either | |
8 | version 2 of the License, or (at your option) any later version. | |
9 | ||
10 | Libiberty is distributed in the hope that it will be useful, | |
11 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
13 | Library General Public License for more details. | |
14 | ||
15 | You should have received a copy of the GNU Library General Public | |
16 | License along with libiberty; see the file COPYING.LIB. If not, | |
17 | write to the Free Software Foundation, Inc., 51 Franklin Street - Fifth Floor, | |
18 | Boston, MA 02110-1301, USA. */ | |
19 | ||
20 | /* On OSX, the environ variable can be used directly in the code of an | |
21 | executable, but cannot be used in the code of a shared library (such as | |
22 | GCC's liblto_plugin, which links in libiberty code). Instead, the | |
23 | function _NSGetEnviron can be called to get the address of environ. */ | |
24 | ||
25 | #ifndef HAVE_ENVIRON_DECL | |
26 | # ifdef __APPLE__ | |
27 | # include <crt_externs.h> | |
28 | # define environ (*_NSGetEnviron ()) | |
29 | # else | |
b9c68330 | 30 | # ifndef environ |
35a88fa5 | 31 | extern char **environ; |
b9c68330 | 32 | # endif |
35a88fa5 IS |
33 | # endif |
34 | # define HAVE_ENVIRON_DECL | |
35 | #endif |