1*a9fa9459Szrj /* Declare the environ system variable. 2*a9fa9459Szrj Copyright (C) 2015-2016 Free Software Foundation, Inc. 3*a9fa9459Szrj 4*a9fa9459Szrj This file is part of the libiberty library. 5*a9fa9459Szrj Libiberty is free software; you can redistribute it and/or 6*a9fa9459Szrj modify it under the terms of the GNU Library General Public 7*a9fa9459Szrj License as published by the Free Software Foundation; either 8*a9fa9459Szrj version 2 of the License, or (at your option) any later version. 9*a9fa9459Szrj 10*a9fa9459Szrj Libiberty is distributed in the hope that it will be useful, 11*a9fa9459Szrj but WITHOUT ANY WARRANTY; without even the implied warranty of 12*a9fa9459Szrj MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 13*a9fa9459Szrj Library General Public License for more details. 14*a9fa9459Szrj 15*a9fa9459Szrj You should have received a copy of the GNU Library General Public 16*a9fa9459Szrj License along with libiberty; see the file COPYING.LIB. If not, 17*a9fa9459Szrj write to the Free Software Foundation, Inc., 51 Franklin Street - Fifth Floor, 18*a9fa9459Szrj Boston, MA 02110-1301, USA. */ 19*a9fa9459Szrj 20*a9fa9459Szrj /* On OSX, the environ variable can be used directly in the code of an 21*a9fa9459Szrj executable, but cannot be used in the code of a shared library (such as 22*a9fa9459Szrj GCC's liblto_plugin, which links in libiberty code). Instead, the 23*a9fa9459Szrj function _NSGetEnviron can be called to get the address of environ. */ 24*a9fa9459Szrj 25*a9fa9459Szrj #ifndef HAVE_ENVIRON_DECL 26*a9fa9459Szrj # ifdef __APPLE__ 27*a9fa9459Szrj # include <crt_externs.h> 28*a9fa9459Szrj # define environ (*_NSGetEnviron ()) 29*a9fa9459Szrj # else 30*a9fa9459Szrj extern char **environ; 31*a9fa9459Szrj # endif 32*a9fa9459Szrj # define HAVE_ENVIRON_DECL 33*a9fa9459Szrj #endif 34