1*fae548d3Szrj /* Declare the environ system variable. 2*fae548d3Szrj Copyright (C) 2015-2020 Free Software Foundation, Inc. 3*fae548d3Szrj 4*fae548d3Szrj This file is part of the libiberty library. 5*fae548d3Szrj Libiberty is free software; you can redistribute it and/or 6*fae548d3Szrj modify it under the terms of the GNU Library General Public 7*fae548d3Szrj License as published by the Free Software Foundation; either 8*fae548d3Szrj version 2 of the License, or (at your option) any later version. 9*fae548d3Szrj 10*fae548d3Szrj Libiberty is distributed in the hope that it will be useful, 11*fae548d3Szrj but WITHOUT ANY WARRANTY; without even the implied warranty of 12*fae548d3Szrj MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 13*fae548d3Szrj Library General Public License for more details. 14*fae548d3Szrj 15*fae548d3Szrj You should have received a copy of the GNU Library General Public 16*fae548d3Szrj License along with libiberty; see the file COPYING.LIB. If not, 17*fae548d3Szrj write to the Free Software Foundation, Inc., 51 Franklin Street - Fifth Floor, 18*fae548d3Szrj Boston, MA 02110-1301, USA. */ 19*fae548d3Szrj 20*fae548d3Szrj /* On OSX, the environ variable can be used directly in the code of an 21*fae548d3Szrj executable, but cannot be used in the code of a shared library (such as 22*fae548d3Szrj GCC's liblto_plugin, which links in libiberty code). Instead, the 23*fae548d3Szrj function _NSGetEnviron can be called to get the address of environ. */ 24*fae548d3Szrj 25*fae548d3Szrj #ifndef HAVE_ENVIRON_DECL 26*fae548d3Szrj # ifdef __APPLE__ 27*fae548d3Szrj # include <crt_externs.h> 28*fae548d3Szrj # define environ (*_NSGetEnviron ()) 29*fae548d3Szrj # else 30*fae548d3Szrj # ifndef environ 31*fae548d3Szrj extern char **environ; 32*fae548d3Szrj # endif 33*fae548d3Szrj # endif 34*fae548d3Szrj # define HAVE_ENVIRON_DECL 35*fae548d3Szrj #endif 36