Gary V. Vaughan c823c708c8 Without this patch, lt_dlopen always opens modules with symbol ... 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.		2007-05-08 14:38:50 +00:00
..
.cvsignore	* .cvsignore, doc/.cvsignore, libltdl/.cvsignore,	2006-06-13 18:36:56 +00:00
fdl.texi	The FSF are moving offices today. Changed their contact address	2005-04-22 10:10:31 +00:00
libtool.texi	Without this patch, lt_dlopen always opens modules with symbol	2007-05-08 14:38:50 +00:00
notes.texi	* README: Document the need for GNU make to build Libtool.	2007-02-25 15:33:24 +00:00
PLATFORMS	* README: Remove "Important" information about patching automake.	2003-03-22 06:34:27 +00:00