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c823c708c8
visibility set according to the underlying implementation. Here, we add lt_dlopenadvise() to allow callers to request, among other things, local or global symbol visibility from the underlying dlloader: * libltdl/ltdl.c (LT_DLRESIDENT_FLAG): Removed. (LT_DLIS_RESIDENT): Use public is_resident info field. (LT_DLIS_SYMLOCAL, LT_DLIS_SYMGLOBAL): New macros to test for module symbol visibility status. (tryall_dlopen): If vtable->module_open() was able to act on either is_symlocal or is_symglobal hints, store that in the handle flags. (lt_dlopenadvise): New function that works like lt_dlopen(), but accepts an advise type to determine whether to ask dlloaders to change default symbol visibility. (lt_dlopen, lt_dlopenext): Just call lt_dlopenadvise() with the correct parameters. (lt_dladvise_init, lt_dladvise_destroy): New functions to initialize and destroy an advise type hint. (lt_dladvise_ext, lt_dladvise_resident, lt_dladvise_local) (lt_dladvise_global): Set hints on an advise type. (openadvise): Factored out of lt_dlopenadvise. (has_library_ext): Factored out of lt_dlopenadvise. * libltdl/ltdl.h: Declare all of the above. (lt_dlinfo): New fields for advise hints. * libltdl/libltdl/lt_dlloader.h (lt_module_open): Add a new advise parameter. Adjust all callers. (lt_dladvise): New opaque type for advise hints. * libltdl/libltdl/lt__private.h (lt__advise): Declare contents of opaque lt_dladvise type. * libltdl/libltdl/lt_error.h (CONFLICTING_FLAGS): New error for attempts to have local and global symbol visibility at the same time. * libltdl/loaders/dld_link.c, libltdl/loaders/dyld.c, libltdl/loaders/load_add_on.c, libltdl/loaders/loadlibrary.c, libltdl/loaders/preopen.c, libltdl/loaders/shl_load.c: Adjust. * libltdl/loaders/dlopen.c (RTLD_LOCAL, RTLD_GLOBAL): Try to define these symbols if the system has equivalents. (vmopen): If unable to act on a caller request to set symbol visibility, then unset the relevant hints in the advise type. * tests/lt_dladvise.at: New tests for the above. * doc/libtool.texi (Libltdl Interface): Updated. * NEWS: Updated. |
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| .. | ||
| config | ||
| libltdl | ||
| loaders | ||
| m4 | ||
| .cvsignore | ||
| argz_.h | ||
| argz.c | ||
| configure.ac | ||
| COPYING.LIB | ||
| lt__alloc.c | ||
| lt__dirent.c | ||
| lt__strl.c | ||
| lt_dlloader.c | ||
| lt_error.c | ||
| ltdl.c | ||
| ltdl.h | ||
| Makefile.inc | ||
| README | ||
| slist.c | ||
This is GNU libltdl, a system independent dlopen wrapper for GNU libtool. It supports the following dlopen interfaces: * dlopen (Solaris, Linux and various BSD flavors) * shl_load (HP-UX) * LoadLibrary (Win16 and Win32) * load_add_on (BeOS) * GNU DLD (emulates dynamic linking for static libraries) * dyld (darwin/Mac OS X) * libtool's dlpreopen -- Copyright (C) 1999, 2003 Free Software Foundation, Inc. Written by Thomas Tanner, 1999 This file is part of GNU Libtool. GNU Libtool is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. As a special exception to the GNU General Public License, if you distribute this file as part of a program or library that is built using GNU Libtool, you may include this file under the same distribution terms that you use for the rest of that program. GNU Libtool is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with GNU Libtool; see the file COPYING. If not, a copy can be downloaded from http://www.gnu.org/licenses/gpl.html, or obtained by writing to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.