00001 // visibility.h: Define XAPIAN_VISIBILITY macro. 00002 // 00003 // Copyright (C) 2007 Olly Betts 00004 // 00005 // This program is free software; you can redistribute it and/or modify 00006 // it under the terms of the GNU General Public License as published by 00007 // the Free Software Foundation; either version 2 of the License, or 00008 // (at your option) any later version. 00009 // 00010 // This program is distributed in the hope that it will be useful, 00011 // but WITHOUT ANY WARRANTY; without even the implied warranty of 00012 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 00013 // GNU General Public License for more details. 00014 // 00015 // You should have received a copy of the GNU General Public License 00016 // along with this program; if not, write to the Free Software 00017 // Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA 00018 00019 #ifndef XAPIAN_INCLUDED_VISIBILITY_H 00020 #define XAPIAN_INCLUDED_VISIBILITY_H 00021 00022 #if defined __GNUC__ && (__GNUC__ >= 4) && !defined XAPIAN_DISABLE_VISIBILITY 00023 // GCC 3.4 has visibility support, but it's a bit buggy so we require 4.0. 00024 # define XAPIAN_VISIBILITY_DEFAULT __attribute__((visibility("default"))) 00025 #else 00026 # define XAPIAN_VISIBILITY_DEFAULT 00027 #endif 00028 00029 #endif