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34 lines
1.3 KiB
C
34 lines
1.3 KiB
C
/* Declare the environ system variable.
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Copyright (C) 2015-2017 Free Software Foundation, Inc.
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This file is part of the libiberty library.
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Libiberty is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public
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License as published by the Free Software Foundation; either
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version 2 of the License, or (at your option) any later version.
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Libiberty is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public
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License along with libiberty; see the file COPYING.LIB. If not,
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write to the Free Software Foundation, Inc., 51 Franklin Street - Fifth Floor,
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Boston, MA 02110-1301, USA. */
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/* On OSX, the environ variable can be used directly in the code of an
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executable, but cannot be used in the code of a shared library (such as
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GCC's liblto_plugin, which links in libiberty code). Instead, the
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function _NSGetEnviron can be called to get the address of environ. */
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#ifndef HAVE_ENVIRON_DECL
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# ifdef __APPLE__
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# include <crt_externs.h>
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# define environ (*_NSGetEnviron ())
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# else
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extern char **environ;
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# endif
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# define HAVE_ENVIRON_DECL
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#endif
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