2
0
mirror of git://git.savannah.gnu.org/libtool.git synced 2025-02-17 15:10:02 +08:00
libtool/libltdl/loaders/preopen.c

375 lines
9.3 KiB
C
Raw Normal View History

This pervasive changeset makes two intertwined deep changes to the operation of libtool (neither would work alone). First, there is a new feature that allows libraries to preopen modules. This entails a backwards incompatible change to the libltdl API for separating out the preloaded symbol lists by owner. Second, in the tradition of "eating our own dogfood", libltdl now preloads its own dlloaders. The internal API for dlloaders has also had to change in a backwards incompatible way in support of the new library preloading feature. If you don't use preloaded libraries, you needn't change your project sources, though you will need to recompile against the new libltdl. The API changes are mostly confined to dlloaders, so you probably needn't worry about those (unless you have written a custom loader that you want libltdl to use): * configure.ac (AC_CONFIG_FILES): Add libltdl/loaders/Makefile. * libltdl/configure.ac (AC_CONFIG_FILES): Add loaders/Makefile. * libltdl/loaders: New directory for module loaders, to simplify Makefile rules, and to give the loaders themselves names that are unique in the first few characters. * libtoolize.in (func_copy_all_files): Copy recursively to pick up the loaders directory contents. * libltdl/loaders/Makefile.am: New file. Move module building rules to here... * libltdl/Makefile.am: ...from here. (VERSION_INFO): Bumped version info to signify interface changes. (libltdl_la_CPPFLAGS, libltdlc_la_CPPFLAGS): Set LTDLOPEN appropriately for each library. * libltdl/loader-dld_link.c, libltdl/loader-dlopen.c, libltdl/loader-dyld.c, libltdl/loader-load_add_on.c, libltdl/loader-loadlibrary.c libltdl/loader-preopen.c, libltdl/loader-shl_load.c: Moved from here... * libltdl/loaders/dld_link.c, libltdl/loaders/dlopen.c, libltdl/loaders/dyld.c, libltdl/loaders/load_add_on.c, libltdl/loaders/loadlibrary.c libltdl/loaders/preopen.c, libltdl/loaders/shl_load.c: ...to here. (get_vtable): New entry function for each. * libltdl/loaders/preopen.c (lt_dlsymlists_t): Replaced by... (symlist_chain): ...a new structure which maps lists of preloaded symbols from the object that loads them. (lt_dlpreload_open): New function to automatically open all preloaded modules belonging to a named object (ORIGINATOR). * libltdl/lt__alloc.c (lt__zalloc): New function to return a block of zeroed out new memory. * libltdl/lt__alloc.h (lt__zalloc): Prototype it. * libltdl/lt__private.h (lt__alloc_die_callback): Add missing prototype. (lt__error_strings): Make this opaque to callers. * libltdl/lt_error.c (lt__error_strings): Move the implementation to here. * libltdl/lt_dlloader.h (lt_user_dlloader): Add extra fields to make originator focused preloading possible. *BREAKS BACKWARDS COMPATIBILITY* (lt_dlloader_add): Take advantage of new fields to simplify paramater list. * libltdl/lt_system.h (LT_STR): New ANSI stringification macro. (LT_CONC): Fix it to work from within macros. * libltdl/ltdl.c (loader_init, loader_init_callback): Simplify dlloader loading. (get_vtable, preloaded_symbols): Point these at the preopen.c symbols to bootstrap the loader chain. (lt_dlinit): Load the preopen dlloader manually, and then use it to load any other preloaded dlloaders. (lt_dlloader_add): Simplify parameter list. Populate new fields. Chain new loaders according to priority field. * libltdl/ltdl.h (lt_dlsymlist): Add a new originator field. (lt_dlpreload_callback_func): Type of a callback for automatic lt_dlpreload_open loading. (LTDL_SET_PRELOADED_SYMBOLS): Adjust to hook into preloaded symbols from the "@PROGRAM@" originator. * tests/demo/dlmain.c (main): Use mangled preloaded_symbols symbol. * tests/pdemo/longer_file_name_dlmain.c (main): Ditto. * ltmain.in: Don't spew spurious warnings when dlopening and dlpreopening modules. (func_generate_dlsyms): Factored out from multiple copies in the rest of the code. Generate originator keyed symbol lists. (func_extract_archives): Also factored. Extract the contents of convenience archives for linking with dependent libraries when --whole-archive is not available. [darwin]: Don't try to link $old_library unless it exists, and $lib is a bundle. * m4/ltdl.m4 (AC_LTDL_DLLIB): Check for all possible dynamic loading libraries/apis rather that stopping when an acceptable one is discovered. (LT_DLLOADERS): New variable for holding dlloaders that can be preloaded. * doc/libtool.texi: Document interface changes. * NEWS: Updated.
2004-07-15 20:14:48 +08:00
/* loader-preopen.c -- emulate dynamic linking using preloaded_symbols
* HACKING (Licensing Rules): Explain the various license texts used for files distributed with Libtool, and update license text to match. * Makefile.am, Makefile.maint README, README.alpha, THANKS, TODO, bootstrap, clcommit.m4sh, configure.ac, libltdl/Makefile.inc, libltdl/README, libltdl/argz.c, libltdl/argz_.h, libltdl/config/general.m4sh, libltdl/config/getopt.m4sh, libltdl/config/ltmain.m4sh, libltdl/config/mailnotify.m4sh, libltdl/config/mkstamp, libltdl/configure.ac, libltdl/libltdl/lt__alloc.h, libltdl/libltdl/lt__dirent.h, libltdl/libltdl/lt__glibc.h, libltdl/libltdl/lt__private.h, libltdl/libltdl/lt__strl.h, libltdl/libltdl/lt_dlloader.h, libltdl/libltdl/lt_error.h, libltdl/libltdl/lt_system.h, libltdl/libltdl/slist.h, libltdl/loaders/dld_link.c, libltdl/loaders/dlopen.c, libltdl/loaders/dyld.c, libltdl/loaders/load_add_on.c, libltdl/loaders/loadlibrary.c, libltdl/loaders/preopen.c, libltdl/loaders/shl_load.c, libltdl/lt__alloc.c, libltdl/lt__dirent.c, libltdl/lt__strl.c, libltdl/lt_dlloader.c, libltdl/lt_error.c, libltdl/ltdl.c, libltdl/ltdl.h, libltdl/m4/argz.m4, libltdl/m4/libtool.m4, libltdl/m4/ltdl.m4, libltdl/m4/ltoptions.m4, libltdl/m4/ltsugar.m4, libltdl/m4/ltversion.in, Jlibltdl/m4/ltversion.m4, libltdl/m4/lt~obsolete.m4, libltdl/slist.c, libtoolize.m4sh, tests/am-subdir.at, tests/cdemo-conf.test, tests/cdemo-exec.test, tests/cdemo-make.test, tests/cdemo-shared.test, tests/cdemo-static.test, tests/cdemo-undef.test, tests/cdemo/Makefile.am, tests/cdemo/configure.ac, tests/cdemo/foo.c, tests/cdemo/foo.h, tests/cdemo/main.c, tests/cmdline_wrap.at, tests/convenience.at, tests/defs.m4sh, tests/demo-conf.test, tests/demo-deplibs.test, tests/demo-exec.test, tests/demo-hardcode.test, tests/demo-inst.test, tests/demo-make.test, tests/demo-nofast.test, tests/demo-noinst-link.test, tests/demo-nopic.test, tests/demo-pic.test, tests/demo-relink.test, tests/demo-shared.test, tests/demo-static.test, tests/demo-unst.test, tests/demo/Makefile.am, tests/demo/configure.ac, tests/demo/dlmain.c, tests/demo/foo.c, tests/demo/foo.h, tests/demo/hell1.c, tests/demo/hell2.c, tests/demo/hello.c, tests/demo/main.c, tests/depdemo-conf.test, tests/depdemo-exec.test, tests/depdemo-inst.test, tests/depdemo-make.test, tests/depdemo-nofast.test, tests/depdemo-relink.test, tests/depdemo-shared.test, tests/depdemo-static.test, tests/depdemo-unst.test, tests/depdemo/Makefile.am, tests/depdemo/configure.ac, tests/depdemo/l1/Makefile.am, tests/depdemo/l1/l1.c, tests/depdemo/l1/l1.h, tests/depdemo/l2/Makefile.am, tests/depdemo/l2/l2.c, tests/depdemo/l2/l2.h, tests/depdemo/l3/Makefile.am, tests/depdemo/l3/l3.c, tests/depdemo/l3/l3.h, tests/depdemo/l4/Makefile.am, tests/depdemo/l4/l4.c, tests/depdemo/l4/l4.h, tests/depdemo/main.c, tests/depdemo/sysdep.h, tests/deplibs-ident.at, tests/destdir.at, tests/duplicate_conv.at, tests/duplicate_deps.at, tests/duplicate_members.at, tests/early-libtool.at, tests/export.at, tests/f77demo-conf.test, tests/f77demo-exec.test, tests/f77demo-make.test, tests/f77demo-shared.test, tests/f77demo-static.test, tests/f77demo/Makefile.am, tests/f77demo/configure.ac, tests/f77demo/cprogram.c, tests/f77demo/foo.h, tests/f77demo/fooc.c, tests/fail.at, tests/fcdemo-conf.test, tests/fcdemo-exec.test, tests/fcdemo-make.test, tests/fcdemo-shared.test, tests/fcdemo-static.test, tests/fcdemo/Makefile.am, tests/fcdemo/configure.ac, tests/fcdemo/cprogram.c, tests/fcdemo/foo.h, tests/fcdemo/fooc.c, tests/inherited_flags.at, tests/libtoolize.at, tests/link-2.test, tests/link-order.at, tests/link-order2.at, tests/link.test, tests/lt_dlexit.at, tests/mdemo-conf.test, tests/mdemo-dryrun.test, tests/mdemo-exec.test, tests/mdemo-inst.test, tests/mdemo-make.test, tests/mdemo-shared.test, tests/mdemo-static.test, tests/mdemo-unst.test, tests/mdemo/Makefile.am, tests/mdemo/configure.ac, tests/mdemo/foo.h, tests/mdemo/foo1.c, tests/mdemo/foo2.c, tests/mdemo/main.c, tests/mdemo/mlib.c, tests/mdemo/sub.c, tests/mdemo2-conf.test, tests/mdemo2-exec.test, tests/mdemo2-make.test, tests/mdemo2/Makefile.am, tests/mdemo2/configure.ac, tests/mdemo2/main.c, tests/nomode.test, tests/nonrecursive.at, tests/objectlist.test, tests/old-m4-iface.at, tests/pdemo-conf.test, tests/pdemo-exec.test, tests/pdemo-inst.test, tests/pdemo-make.test, tests/pdemo/Makefile.am, tests/pdemo/configure.ac, tests/pdemo/foo.h, tests/pdemo/longer_file_name_dlmain.c, tests/pdemo/longer_file_name_foo.c, tests/pdemo/longer_file_name_foo2.c, tests/pdemo/longer_file_name_hell1.c, tests/pdemo/longer_file_name_hell2.c, tests/pdemo/longer_file_name_hello.c, tests/pdemo/longer_file_name_main.c, tests/quote.test, tests/recursive.at, tests/search-path.at, tests/sh.test, tests/shlibpath.at, tests/standalone.at, tests/static.at, tests/stresstest.at, tests/subproject.at, tests/suffix.test, tests/tagdemo-conf.test, tests/tagdemo-exec.test, tests/tagdemo-make.test, tests/tagdemo-shared.test, tests/tagdemo-static.test, tests/tagdemo-undef.test, tests/tagdemo/Makefile.am, tests/tagdemo/baz.cpp, tests/tagdemo/baz.h, tests/tagdemo/configure.ac, tests/tagdemo/conv.cpp, tests/tagdemo/conv.h, tests/tagdemo/foo.cpp, tests/tagdemo/foo.h, tests/tagdemo/main.cpp, tests/tagtrace.test, tests/template.at, tests/testsuite.at: Apply correct license text according to the new rules set out in HACKING.
2007-03-25 20:12:44 +08:00
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 22:38:50 +08:00
Copyright (C) 1998, 1999, 2000, 2004, 2006,
2007 Free Software Foundation, Inc.
* HACKING (Licensing Rules): Explain the various license texts used for files distributed with Libtool, and update license text to match. * Makefile.am, Makefile.maint README, README.alpha, THANKS, TODO, bootstrap, clcommit.m4sh, configure.ac, libltdl/Makefile.inc, libltdl/README, libltdl/argz.c, libltdl/argz_.h, libltdl/config/general.m4sh, libltdl/config/getopt.m4sh, libltdl/config/ltmain.m4sh, libltdl/config/mailnotify.m4sh, libltdl/config/mkstamp, libltdl/configure.ac, libltdl/libltdl/lt__alloc.h, libltdl/libltdl/lt__dirent.h, libltdl/libltdl/lt__glibc.h, libltdl/libltdl/lt__private.h, libltdl/libltdl/lt__strl.h, libltdl/libltdl/lt_dlloader.h, libltdl/libltdl/lt_error.h, libltdl/libltdl/lt_system.h, libltdl/libltdl/slist.h, libltdl/loaders/dld_link.c, libltdl/loaders/dlopen.c, libltdl/loaders/dyld.c, libltdl/loaders/load_add_on.c, libltdl/loaders/loadlibrary.c, libltdl/loaders/preopen.c, libltdl/loaders/shl_load.c, libltdl/lt__alloc.c, libltdl/lt__dirent.c, libltdl/lt__strl.c, libltdl/lt_dlloader.c, libltdl/lt_error.c, libltdl/ltdl.c, libltdl/ltdl.h, libltdl/m4/argz.m4, libltdl/m4/libtool.m4, libltdl/m4/ltdl.m4, libltdl/m4/ltoptions.m4, libltdl/m4/ltsugar.m4, libltdl/m4/ltversion.in, Jlibltdl/m4/ltversion.m4, libltdl/m4/lt~obsolete.m4, libltdl/slist.c, libtoolize.m4sh, tests/am-subdir.at, tests/cdemo-conf.test, tests/cdemo-exec.test, tests/cdemo-make.test, tests/cdemo-shared.test, tests/cdemo-static.test, tests/cdemo-undef.test, tests/cdemo/Makefile.am, tests/cdemo/configure.ac, tests/cdemo/foo.c, tests/cdemo/foo.h, tests/cdemo/main.c, tests/cmdline_wrap.at, tests/convenience.at, tests/defs.m4sh, tests/demo-conf.test, tests/demo-deplibs.test, tests/demo-exec.test, tests/demo-hardcode.test, tests/demo-inst.test, tests/demo-make.test, tests/demo-nofast.test, tests/demo-noinst-link.test, tests/demo-nopic.test, tests/demo-pic.test, tests/demo-relink.test, tests/demo-shared.test, tests/demo-static.test, tests/demo-unst.test, tests/demo/Makefile.am, tests/demo/configure.ac, tests/demo/dlmain.c, tests/demo/foo.c, tests/demo/foo.h, tests/demo/hell1.c, tests/demo/hell2.c, tests/demo/hello.c, tests/demo/main.c, tests/depdemo-conf.test, tests/depdemo-exec.test, tests/depdemo-inst.test, tests/depdemo-make.test, tests/depdemo-nofast.test, tests/depdemo-relink.test, tests/depdemo-shared.test, tests/depdemo-static.test, tests/depdemo-unst.test, tests/depdemo/Makefile.am, tests/depdemo/configure.ac, tests/depdemo/l1/Makefile.am, tests/depdemo/l1/l1.c, tests/depdemo/l1/l1.h, tests/depdemo/l2/Makefile.am, tests/depdemo/l2/l2.c, tests/depdemo/l2/l2.h, tests/depdemo/l3/Makefile.am, tests/depdemo/l3/l3.c, tests/depdemo/l3/l3.h, tests/depdemo/l4/Makefile.am, tests/depdemo/l4/l4.c, tests/depdemo/l4/l4.h, tests/depdemo/main.c, tests/depdemo/sysdep.h, tests/deplibs-ident.at, tests/destdir.at, tests/duplicate_conv.at, tests/duplicate_deps.at, tests/duplicate_members.at, tests/early-libtool.at, tests/export.at, tests/f77demo-conf.test, tests/f77demo-exec.test, tests/f77demo-make.test, tests/f77demo-shared.test, tests/f77demo-static.test, tests/f77demo/Makefile.am, tests/f77demo/configure.ac, tests/f77demo/cprogram.c, tests/f77demo/foo.h, tests/f77demo/fooc.c, tests/fail.at, tests/fcdemo-conf.test, tests/fcdemo-exec.test, tests/fcdemo-make.test, tests/fcdemo-shared.test, tests/fcdemo-static.test, tests/fcdemo/Makefile.am, tests/fcdemo/configure.ac, tests/fcdemo/cprogram.c, tests/fcdemo/foo.h, tests/fcdemo/fooc.c, tests/inherited_flags.at, tests/libtoolize.at, tests/link-2.test, tests/link-order.at, tests/link-order2.at, tests/link.test, tests/lt_dlexit.at, tests/mdemo-conf.test, tests/mdemo-dryrun.test, tests/mdemo-exec.test, tests/mdemo-inst.test, tests/mdemo-make.test, tests/mdemo-shared.test, tests/mdemo-static.test, tests/mdemo-unst.test, tests/mdemo/Makefile.am, tests/mdemo/configure.ac, tests/mdemo/foo.h, tests/mdemo/foo1.c, tests/mdemo/foo2.c, tests/mdemo/main.c, tests/mdemo/mlib.c, tests/mdemo/sub.c, tests/mdemo2-conf.test, tests/mdemo2-exec.test, tests/mdemo2-make.test, tests/mdemo2/Makefile.am, tests/mdemo2/configure.ac, tests/mdemo2/main.c, tests/nomode.test, tests/nonrecursive.at, tests/objectlist.test, tests/old-m4-iface.at, tests/pdemo-conf.test, tests/pdemo-exec.test, tests/pdemo-inst.test, tests/pdemo-make.test, tests/pdemo/Makefile.am, tests/pdemo/configure.ac, tests/pdemo/foo.h, tests/pdemo/longer_file_name_dlmain.c, tests/pdemo/longer_file_name_foo.c, tests/pdemo/longer_file_name_foo2.c, tests/pdemo/longer_file_name_hell1.c, tests/pdemo/longer_file_name_hell2.c, tests/pdemo/longer_file_name_hello.c, tests/pdemo/longer_file_name_main.c, tests/quote.test, tests/recursive.at, tests/search-path.at, tests/sh.test, tests/shlibpath.at, tests/standalone.at, tests/static.at, tests/stresstest.at, tests/subproject.at, tests/suffix.test, tests/tagdemo-conf.test, tests/tagdemo-exec.test, tests/tagdemo-make.test, tests/tagdemo-shared.test, tests/tagdemo-static.test, tests/tagdemo-undef.test, tests/tagdemo/Makefile.am, tests/tagdemo/baz.cpp, tests/tagdemo/baz.h, tests/tagdemo/configure.ac, tests/tagdemo/conv.cpp, tests/tagdemo/conv.h, tests/tagdemo/foo.cpp, tests/tagdemo/foo.h, tests/tagdemo/main.cpp, tests/tagtrace.test, tests/template.at, tests/testsuite.at: Apply correct license text according to the new rules set out in HACKING.
2007-03-25 20:12:44 +08:00
Written by Thomas Tanner, 1998
This pervasive changeset makes two intertwined deep changes to the operation of libtool (neither would work alone). First, there is a new feature that allows libraries to preopen modules. This entails a backwards incompatible change to the libltdl API for separating out the preloaded symbol lists by owner. Second, in the tradition of "eating our own dogfood", libltdl now preloads its own dlloaders. The internal API for dlloaders has also had to change in a backwards incompatible way in support of the new library preloading feature. If you don't use preloaded libraries, you needn't change your project sources, though you will need to recompile against the new libltdl. The API changes are mostly confined to dlloaders, so you probably needn't worry about those (unless you have written a custom loader that you want libltdl to use): * configure.ac (AC_CONFIG_FILES): Add libltdl/loaders/Makefile. * libltdl/configure.ac (AC_CONFIG_FILES): Add loaders/Makefile. * libltdl/loaders: New directory for module loaders, to simplify Makefile rules, and to give the loaders themselves names that are unique in the first few characters. * libtoolize.in (func_copy_all_files): Copy recursively to pick up the loaders directory contents. * libltdl/loaders/Makefile.am: New file. Move module building rules to here... * libltdl/Makefile.am: ...from here. (VERSION_INFO): Bumped version info to signify interface changes. (libltdl_la_CPPFLAGS, libltdlc_la_CPPFLAGS): Set LTDLOPEN appropriately for each library. * libltdl/loader-dld_link.c, libltdl/loader-dlopen.c, libltdl/loader-dyld.c, libltdl/loader-load_add_on.c, libltdl/loader-loadlibrary.c libltdl/loader-preopen.c, libltdl/loader-shl_load.c: Moved from here... * libltdl/loaders/dld_link.c, libltdl/loaders/dlopen.c, libltdl/loaders/dyld.c, libltdl/loaders/load_add_on.c, libltdl/loaders/loadlibrary.c libltdl/loaders/preopen.c, libltdl/loaders/shl_load.c: ...to here. (get_vtable): New entry function for each. * libltdl/loaders/preopen.c (lt_dlsymlists_t): Replaced by... (symlist_chain): ...a new structure which maps lists of preloaded symbols from the object that loads them. (lt_dlpreload_open): New function to automatically open all preloaded modules belonging to a named object (ORIGINATOR). * libltdl/lt__alloc.c (lt__zalloc): New function to return a block of zeroed out new memory. * libltdl/lt__alloc.h (lt__zalloc): Prototype it. * libltdl/lt__private.h (lt__alloc_die_callback): Add missing prototype. (lt__error_strings): Make this opaque to callers. * libltdl/lt_error.c (lt__error_strings): Move the implementation to here. * libltdl/lt_dlloader.h (lt_user_dlloader): Add extra fields to make originator focused preloading possible. *BREAKS BACKWARDS COMPATIBILITY* (lt_dlloader_add): Take advantage of new fields to simplify paramater list. * libltdl/lt_system.h (LT_STR): New ANSI stringification macro. (LT_CONC): Fix it to work from within macros. * libltdl/ltdl.c (loader_init, loader_init_callback): Simplify dlloader loading. (get_vtable, preloaded_symbols): Point these at the preopen.c symbols to bootstrap the loader chain. (lt_dlinit): Load the preopen dlloader manually, and then use it to load any other preloaded dlloaders. (lt_dlloader_add): Simplify parameter list. Populate new fields. Chain new loaders according to priority field. * libltdl/ltdl.h (lt_dlsymlist): Add a new originator field. (lt_dlpreload_callback_func): Type of a callback for automatic lt_dlpreload_open loading. (LTDL_SET_PRELOADED_SYMBOLS): Adjust to hook into preloaded symbols from the "@PROGRAM@" originator. * tests/demo/dlmain.c (main): Use mangled preloaded_symbols symbol. * tests/pdemo/longer_file_name_dlmain.c (main): Ditto. * ltmain.in: Don't spew spurious warnings when dlopening and dlpreopening modules. (func_generate_dlsyms): Factored out from multiple copies in the rest of the code. Generate originator keyed symbol lists. (func_extract_archives): Also factored. Extract the contents of convenience archives for linking with dependent libraries when --whole-archive is not available. [darwin]: Don't try to link $old_library unless it exists, and $lib is a bundle. * m4/ltdl.m4 (AC_LTDL_DLLIB): Check for all possible dynamic loading libraries/apis rather that stopping when an acceptable one is discovered. (LT_DLLOADERS): New variable for holding dlloaders that can be preloaded. * doc/libtool.texi: Document interface changes. * NEWS: Updated.
2004-07-15 20:14:48 +08:00
NOTE: The canonical source of this file is maintained with the
GNU Libtool package. Report bugs to bug-libtool@gnu.org.
* HACKING (Licensing Rules): Explain the various license texts used for files distributed with Libtool, and update license text to match. * Makefile.am, Makefile.maint README, README.alpha, THANKS, TODO, bootstrap, clcommit.m4sh, configure.ac, libltdl/Makefile.inc, libltdl/README, libltdl/argz.c, libltdl/argz_.h, libltdl/config/general.m4sh, libltdl/config/getopt.m4sh, libltdl/config/ltmain.m4sh, libltdl/config/mailnotify.m4sh, libltdl/config/mkstamp, libltdl/configure.ac, libltdl/libltdl/lt__alloc.h, libltdl/libltdl/lt__dirent.h, libltdl/libltdl/lt__glibc.h, libltdl/libltdl/lt__private.h, libltdl/libltdl/lt__strl.h, libltdl/libltdl/lt_dlloader.h, libltdl/libltdl/lt_error.h, libltdl/libltdl/lt_system.h, libltdl/libltdl/slist.h, libltdl/loaders/dld_link.c, libltdl/loaders/dlopen.c, libltdl/loaders/dyld.c, libltdl/loaders/load_add_on.c, libltdl/loaders/loadlibrary.c, libltdl/loaders/preopen.c, libltdl/loaders/shl_load.c, libltdl/lt__alloc.c, libltdl/lt__dirent.c, libltdl/lt__strl.c, libltdl/lt_dlloader.c, libltdl/lt_error.c, libltdl/ltdl.c, libltdl/ltdl.h, libltdl/m4/argz.m4, libltdl/m4/libtool.m4, libltdl/m4/ltdl.m4, libltdl/m4/ltoptions.m4, libltdl/m4/ltsugar.m4, libltdl/m4/ltversion.in, Jlibltdl/m4/ltversion.m4, libltdl/m4/lt~obsolete.m4, libltdl/slist.c, libtoolize.m4sh, tests/am-subdir.at, tests/cdemo-conf.test, tests/cdemo-exec.test, tests/cdemo-make.test, tests/cdemo-shared.test, tests/cdemo-static.test, tests/cdemo-undef.test, tests/cdemo/Makefile.am, tests/cdemo/configure.ac, tests/cdemo/foo.c, tests/cdemo/foo.h, tests/cdemo/main.c, tests/cmdline_wrap.at, tests/convenience.at, tests/defs.m4sh, tests/demo-conf.test, tests/demo-deplibs.test, tests/demo-exec.test, tests/demo-hardcode.test, tests/demo-inst.test, tests/demo-make.test, tests/demo-nofast.test, tests/demo-noinst-link.test, tests/demo-nopic.test, tests/demo-pic.test, tests/demo-relink.test, tests/demo-shared.test, tests/demo-static.test, tests/demo-unst.test, tests/demo/Makefile.am, tests/demo/configure.ac, tests/demo/dlmain.c, tests/demo/foo.c, tests/demo/foo.h, tests/demo/hell1.c, tests/demo/hell2.c, tests/demo/hello.c, tests/demo/main.c, tests/depdemo-conf.test, tests/depdemo-exec.test, tests/depdemo-inst.test, tests/depdemo-make.test, tests/depdemo-nofast.test, tests/depdemo-relink.test, tests/depdemo-shared.test, tests/depdemo-static.test, tests/depdemo-unst.test, tests/depdemo/Makefile.am, tests/depdemo/configure.ac, tests/depdemo/l1/Makefile.am, tests/depdemo/l1/l1.c, tests/depdemo/l1/l1.h, tests/depdemo/l2/Makefile.am, tests/depdemo/l2/l2.c, tests/depdemo/l2/l2.h, tests/depdemo/l3/Makefile.am, tests/depdemo/l3/l3.c, tests/depdemo/l3/l3.h, tests/depdemo/l4/Makefile.am, tests/depdemo/l4/l4.c, tests/depdemo/l4/l4.h, tests/depdemo/main.c, tests/depdemo/sysdep.h, tests/deplibs-ident.at, tests/destdir.at, tests/duplicate_conv.at, tests/duplicate_deps.at, tests/duplicate_members.at, tests/early-libtool.at, tests/export.at, tests/f77demo-conf.test, tests/f77demo-exec.test, tests/f77demo-make.test, tests/f77demo-shared.test, tests/f77demo-static.test, tests/f77demo/Makefile.am, tests/f77demo/configure.ac, tests/f77demo/cprogram.c, tests/f77demo/foo.h, tests/f77demo/fooc.c, tests/fail.at, tests/fcdemo-conf.test, tests/fcdemo-exec.test, tests/fcdemo-make.test, tests/fcdemo-shared.test, tests/fcdemo-static.test, tests/fcdemo/Makefile.am, tests/fcdemo/configure.ac, tests/fcdemo/cprogram.c, tests/fcdemo/foo.h, tests/fcdemo/fooc.c, tests/inherited_flags.at, tests/libtoolize.at, tests/link-2.test, tests/link-order.at, tests/link-order2.at, tests/link.test, tests/lt_dlexit.at, tests/mdemo-conf.test, tests/mdemo-dryrun.test, tests/mdemo-exec.test, tests/mdemo-inst.test, tests/mdemo-make.test, tests/mdemo-shared.test, tests/mdemo-static.test, tests/mdemo-unst.test, tests/mdemo/Makefile.am, tests/mdemo/configure.ac, tests/mdemo/foo.h, tests/mdemo/foo1.c, tests/mdemo/foo2.c, tests/mdemo/main.c, tests/mdemo/mlib.c, tests/mdemo/sub.c, tests/mdemo2-conf.test, tests/mdemo2-exec.test, tests/mdemo2-make.test, tests/mdemo2/Makefile.am, tests/mdemo2/configure.ac, tests/mdemo2/main.c, tests/nomode.test, tests/nonrecursive.at, tests/objectlist.test, tests/old-m4-iface.at, tests/pdemo-conf.test, tests/pdemo-exec.test, tests/pdemo-inst.test, tests/pdemo-make.test, tests/pdemo/Makefile.am, tests/pdemo/configure.ac, tests/pdemo/foo.h, tests/pdemo/longer_file_name_dlmain.c, tests/pdemo/longer_file_name_foo.c, tests/pdemo/longer_file_name_foo2.c, tests/pdemo/longer_file_name_hell1.c, tests/pdemo/longer_file_name_hell2.c, tests/pdemo/longer_file_name_hello.c, tests/pdemo/longer_file_name_main.c, tests/quote.test, tests/recursive.at, tests/search-path.at, tests/sh.test, tests/shlibpath.at, tests/standalone.at, tests/static.at, tests/stresstest.at, tests/subproject.at, tests/suffix.test, tests/tagdemo-conf.test, tests/tagdemo-exec.test, tests/tagdemo-make.test, tests/tagdemo-shared.test, tests/tagdemo-static.test, tests/tagdemo-undef.test, tests/tagdemo/Makefile.am, tests/tagdemo/baz.cpp, tests/tagdemo/baz.h, tests/tagdemo/configure.ac, tests/tagdemo/conv.cpp, tests/tagdemo/conv.h, tests/tagdemo/foo.cpp, tests/tagdemo/foo.h, tests/tagdemo/main.cpp, tests/tagtrace.test, tests/template.at, tests/testsuite.at: Apply correct license text according to the new rules set out in HACKING.
2007-03-25 20:12:44 +08:00
GNU Libltdl is free software; you can redistribute it and/or
This pervasive changeset makes two intertwined deep changes to the operation of libtool (neither would work alone). First, there is a new feature that allows libraries to preopen modules. This entails a backwards incompatible change to the libltdl API for separating out the preloaded symbol lists by owner. Second, in the tradition of "eating our own dogfood", libltdl now preloads its own dlloaders. The internal API for dlloaders has also had to change in a backwards incompatible way in support of the new library preloading feature. If you don't use preloaded libraries, you needn't change your project sources, though you will need to recompile against the new libltdl. The API changes are mostly confined to dlloaders, so you probably needn't worry about those (unless you have written a custom loader that you want libltdl to use): * configure.ac (AC_CONFIG_FILES): Add libltdl/loaders/Makefile. * libltdl/configure.ac (AC_CONFIG_FILES): Add loaders/Makefile. * libltdl/loaders: New directory for module loaders, to simplify Makefile rules, and to give the loaders themselves names that are unique in the first few characters. * libtoolize.in (func_copy_all_files): Copy recursively to pick up the loaders directory contents. * libltdl/loaders/Makefile.am: New file. Move module building rules to here... * libltdl/Makefile.am: ...from here. (VERSION_INFO): Bumped version info to signify interface changes. (libltdl_la_CPPFLAGS, libltdlc_la_CPPFLAGS): Set LTDLOPEN appropriately for each library. * libltdl/loader-dld_link.c, libltdl/loader-dlopen.c, libltdl/loader-dyld.c, libltdl/loader-load_add_on.c, libltdl/loader-loadlibrary.c libltdl/loader-preopen.c, libltdl/loader-shl_load.c: Moved from here... * libltdl/loaders/dld_link.c, libltdl/loaders/dlopen.c, libltdl/loaders/dyld.c, libltdl/loaders/load_add_on.c, libltdl/loaders/loadlibrary.c libltdl/loaders/preopen.c, libltdl/loaders/shl_load.c: ...to here. (get_vtable): New entry function for each. * libltdl/loaders/preopen.c (lt_dlsymlists_t): Replaced by... (symlist_chain): ...a new structure which maps lists of preloaded symbols from the object that loads them. (lt_dlpreload_open): New function to automatically open all preloaded modules belonging to a named object (ORIGINATOR). * libltdl/lt__alloc.c (lt__zalloc): New function to return a block of zeroed out new memory. * libltdl/lt__alloc.h (lt__zalloc): Prototype it. * libltdl/lt__private.h (lt__alloc_die_callback): Add missing prototype. (lt__error_strings): Make this opaque to callers. * libltdl/lt_error.c (lt__error_strings): Move the implementation to here. * libltdl/lt_dlloader.h (lt_user_dlloader): Add extra fields to make originator focused preloading possible. *BREAKS BACKWARDS COMPATIBILITY* (lt_dlloader_add): Take advantage of new fields to simplify paramater list. * libltdl/lt_system.h (LT_STR): New ANSI stringification macro. (LT_CONC): Fix it to work from within macros. * libltdl/ltdl.c (loader_init, loader_init_callback): Simplify dlloader loading. (get_vtable, preloaded_symbols): Point these at the preopen.c symbols to bootstrap the loader chain. (lt_dlinit): Load the preopen dlloader manually, and then use it to load any other preloaded dlloaders. (lt_dlloader_add): Simplify parameter list. Populate new fields. Chain new loaders according to priority field. * libltdl/ltdl.h (lt_dlsymlist): Add a new originator field. (lt_dlpreload_callback_func): Type of a callback for automatic lt_dlpreload_open loading. (LTDL_SET_PRELOADED_SYMBOLS): Adjust to hook into preloaded symbols from the "@PROGRAM@" originator. * tests/demo/dlmain.c (main): Use mangled preloaded_symbols symbol. * tests/pdemo/longer_file_name_dlmain.c (main): Ditto. * ltmain.in: Don't spew spurious warnings when dlopening and dlpreopening modules. (func_generate_dlsyms): Factored out from multiple copies in the rest of the code. Generate originator keyed symbol lists. (func_extract_archives): Also factored. Extract the contents of convenience archives for linking with dependent libraries when --whole-archive is not available. [darwin]: Don't try to link $old_library unless it exists, and $lib is a bundle. * m4/ltdl.m4 (AC_LTDL_DLLIB): Check for all possible dynamic loading libraries/apis rather that stopping when an acceptable one is discovered. (LT_DLLOADERS): New variable for holding dlloaders that can be preloaded. * doc/libtool.texi: Document interface changes. * NEWS: Updated.
2004-07-15 20:14:48 +08:00
modify it under the terms of the GNU Lesser 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 Lesser General Public License,
if you distribute this file as part of a program or library that
* HACKING (Licensing Rules): Explain the various license texts used for files distributed with Libtool, and update license text to match. * Makefile.am, Makefile.maint README, README.alpha, THANKS, TODO, bootstrap, clcommit.m4sh, configure.ac, libltdl/Makefile.inc, libltdl/README, libltdl/argz.c, libltdl/argz_.h, libltdl/config/general.m4sh, libltdl/config/getopt.m4sh, libltdl/config/ltmain.m4sh, libltdl/config/mailnotify.m4sh, libltdl/config/mkstamp, libltdl/configure.ac, libltdl/libltdl/lt__alloc.h, libltdl/libltdl/lt__dirent.h, libltdl/libltdl/lt__glibc.h, libltdl/libltdl/lt__private.h, libltdl/libltdl/lt__strl.h, libltdl/libltdl/lt_dlloader.h, libltdl/libltdl/lt_error.h, libltdl/libltdl/lt_system.h, libltdl/libltdl/slist.h, libltdl/loaders/dld_link.c, libltdl/loaders/dlopen.c, libltdl/loaders/dyld.c, libltdl/loaders/load_add_on.c, libltdl/loaders/loadlibrary.c, libltdl/loaders/preopen.c, libltdl/loaders/shl_load.c, libltdl/lt__alloc.c, libltdl/lt__dirent.c, libltdl/lt__strl.c, libltdl/lt_dlloader.c, libltdl/lt_error.c, libltdl/ltdl.c, libltdl/ltdl.h, libltdl/m4/argz.m4, libltdl/m4/libtool.m4, libltdl/m4/ltdl.m4, libltdl/m4/ltoptions.m4, libltdl/m4/ltsugar.m4, libltdl/m4/ltversion.in, Jlibltdl/m4/ltversion.m4, libltdl/m4/lt~obsolete.m4, libltdl/slist.c, libtoolize.m4sh, tests/am-subdir.at, tests/cdemo-conf.test, tests/cdemo-exec.test, tests/cdemo-make.test, tests/cdemo-shared.test, tests/cdemo-static.test, tests/cdemo-undef.test, tests/cdemo/Makefile.am, tests/cdemo/configure.ac, tests/cdemo/foo.c, tests/cdemo/foo.h, tests/cdemo/main.c, tests/cmdline_wrap.at, tests/convenience.at, tests/defs.m4sh, tests/demo-conf.test, tests/demo-deplibs.test, tests/demo-exec.test, tests/demo-hardcode.test, tests/demo-inst.test, tests/demo-make.test, tests/demo-nofast.test, tests/demo-noinst-link.test, tests/demo-nopic.test, tests/demo-pic.test, tests/demo-relink.test, tests/demo-shared.test, tests/demo-static.test, tests/demo-unst.test, tests/demo/Makefile.am, tests/demo/configure.ac, tests/demo/dlmain.c, tests/demo/foo.c, tests/demo/foo.h, tests/demo/hell1.c, tests/demo/hell2.c, tests/demo/hello.c, tests/demo/main.c, tests/depdemo-conf.test, tests/depdemo-exec.test, tests/depdemo-inst.test, tests/depdemo-make.test, tests/depdemo-nofast.test, tests/depdemo-relink.test, tests/depdemo-shared.test, tests/depdemo-static.test, tests/depdemo-unst.test, tests/depdemo/Makefile.am, tests/depdemo/configure.ac, tests/depdemo/l1/Makefile.am, tests/depdemo/l1/l1.c, tests/depdemo/l1/l1.h, tests/depdemo/l2/Makefile.am, tests/depdemo/l2/l2.c, tests/depdemo/l2/l2.h, tests/depdemo/l3/Makefile.am, tests/depdemo/l3/l3.c, tests/depdemo/l3/l3.h, tests/depdemo/l4/Makefile.am, tests/depdemo/l4/l4.c, tests/depdemo/l4/l4.h, tests/depdemo/main.c, tests/depdemo/sysdep.h, tests/deplibs-ident.at, tests/destdir.at, tests/duplicate_conv.at, tests/duplicate_deps.at, tests/duplicate_members.at, tests/early-libtool.at, tests/export.at, tests/f77demo-conf.test, tests/f77demo-exec.test, tests/f77demo-make.test, tests/f77demo-shared.test, tests/f77demo-static.test, tests/f77demo/Makefile.am, tests/f77demo/configure.ac, tests/f77demo/cprogram.c, tests/f77demo/foo.h, tests/f77demo/fooc.c, tests/fail.at, tests/fcdemo-conf.test, tests/fcdemo-exec.test, tests/fcdemo-make.test, tests/fcdemo-shared.test, tests/fcdemo-static.test, tests/fcdemo/Makefile.am, tests/fcdemo/configure.ac, tests/fcdemo/cprogram.c, tests/fcdemo/foo.h, tests/fcdemo/fooc.c, tests/inherited_flags.at, tests/libtoolize.at, tests/link-2.test, tests/link-order.at, tests/link-order2.at, tests/link.test, tests/lt_dlexit.at, tests/mdemo-conf.test, tests/mdemo-dryrun.test, tests/mdemo-exec.test, tests/mdemo-inst.test, tests/mdemo-make.test, tests/mdemo-shared.test, tests/mdemo-static.test, tests/mdemo-unst.test, tests/mdemo/Makefile.am, tests/mdemo/configure.ac, tests/mdemo/foo.h, tests/mdemo/foo1.c, tests/mdemo/foo2.c, tests/mdemo/main.c, tests/mdemo/mlib.c, tests/mdemo/sub.c, tests/mdemo2-conf.test, tests/mdemo2-exec.test, tests/mdemo2-make.test, tests/mdemo2/Makefile.am, tests/mdemo2/configure.ac, tests/mdemo2/main.c, tests/nomode.test, tests/nonrecursive.at, tests/objectlist.test, tests/old-m4-iface.at, tests/pdemo-conf.test, tests/pdemo-exec.test, tests/pdemo-inst.test, tests/pdemo-make.test, tests/pdemo/Makefile.am, tests/pdemo/configure.ac, tests/pdemo/foo.h, tests/pdemo/longer_file_name_dlmain.c, tests/pdemo/longer_file_name_foo.c, tests/pdemo/longer_file_name_foo2.c, tests/pdemo/longer_file_name_hell1.c, tests/pdemo/longer_file_name_hell2.c, tests/pdemo/longer_file_name_hello.c, tests/pdemo/longer_file_name_main.c, tests/quote.test, tests/recursive.at, tests/search-path.at, tests/sh.test, tests/shlibpath.at, tests/standalone.at, tests/static.at, tests/stresstest.at, tests/subproject.at, tests/suffix.test, tests/tagdemo-conf.test, tests/tagdemo-exec.test, tests/tagdemo-make.test, tests/tagdemo-shared.test, tests/tagdemo-static.test, tests/tagdemo-undef.test, tests/tagdemo/Makefile.am, tests/tagdemo/baz.cpp, tests/tagdemo/baz.h, tests/tagdemo/configure.ac, tests/tagdemo/conv.cpp, tests/tagdemo/conv.h, tests/tagdemo/foo.cpp, tests/tagdemo/foo.h, tests/tagdemo/main.cpp, tests/tagtrace.test, tests/template.at, tests/testsuite.at: Apply correct license text according to the new rules set out in HACKING.
2007-03-25 20:12:44 +08:00
is built using GNU Libtool, you may include this file under the
same distribution terms that you use for the rest of that program.
This pervasive changeset makes two intertwined deep changes to the operation of libtool (neither would work alone). First, there is a new feature that allows libraries to preopen modules. This entails a backwards incompatible change to the libltdl API for separating out the preloaded symbol lists by owner. Second, in the tradition of "eating our own dogfood", libltdl now preloads its own dlloaders. The internal API for dlloaders has also had to change in a backwards incompatible way in support of the new library preloading feature. If you don't use preloaded libraries, you needn't change your project sources, though you will need to recompile against the new libltdl. The API changes are mostly confined to dlloaders, so you probably needn't worry about those (unless you have written a custom loader that you want libltdl to use): * configure.ac (AC_CONFIG_FILES): Add libltdl/loaders/Makefile. * libltdl/configure.ac (AC_CONFIG_FILES): Add loaders/Makefile. * libltdl/loaders: New directory for module loaders, to simplify Makefile rules, and to give the loaders themselves names that are unique in the first few characters. * libtoolize.in (func_copy_all_files): Copy recursively to pick up the loaders directory contents. * libltdl/loaders/Makefile.am: New file. Move module building rules to here... * libltdl/Makefile.am: ...from here. (VERSION_INFO): Bumped version info to signify interface changes. (libltdl_la_CPPFLAGS, libltdlc_la_CPPFLAGS): Set LTDLOPEN appropriately for each library. * libltdl/loader-dld_link.c, libltdl/loader-dlopen.c, libltdl/loader-dyld.c, libltdl/loader-load_add_on.c, libltdl/loader-loadlibrary.c libltdl/loader-preopen.c, libltdl/loader-shl_load.c: Moved from here... * libltdl/loaders/dld_link.c, libltdl/loaders/dlopen.c, libltdl/loaders/dyld.c, libltdl/loaders/load_add_on.c, libltdl/loaders/loadlibrary.c libltdl/loaders/preopen.c, libltdl/loaders/shl_load.c: ...to here. (get_vtable): New entry function for each. * libltdl/loaders/preopen.c (lt_dlsymlists_t): Replaced by... (symlist_chain): ...a new structure which maps lists of preloaded symbols from the object that loads them. (lt_dlpreload_open): New function to automatically open all preloaded modules belonging to a named object (ORIGINATOR). * libltdl/lt__alloc.c (lt__zalloc): New function to return a block of zeroed out new memory. * libltdl/lt__alloc.h (lt__zalloc): Prototype it. * libltdl/lt__private.h (lt__alloc_die_callback): Add missing prototype. (lt__error_strings): Make this opaque to callers. * libltdl/lt_error.c (lt__error_strings): Move the implementation to here. * libltdl/lt_dlloader.h (lt_user_dlloader): Add extra fields to make originator focused preloading possible. *BREAKS BACKWARDS COMPATIBILITY* (lt_dlloader_add): Take advantage of new fields to simplify paramater list. * libltdl/lt_system.h (LT_STR): New ANSI stringification macro. (LT_CONC): Fix it to work from within macros. * libltdl/ltdl.c (loader_init, loader_init_callback): Simplify dlloader loading. (get_vtable, preloaded_symbols): Point these at the preopen.c symbols to bootstrap the loader chain. (lt_dlinit): Load the preopen dlloader manually, and then use it to load any other preloaded dlloaders. (lt_dlloader_add): Simplify parameter list. Populate new fields. Chain new loaders according to priority field. * libltdl/ltdl.h (lt_dlsymlist): Add a new originator field. (lt_dlpreload_callback_func): Type of a callback for automatic lt_dlpreload_open loading. (LTDL_SET_PRELOADED_SYMBOLS): Adjust to hook into preloaded symbols from the "@PROGRAM@" originator. * tests/demo/dlmain.c (main): Use mangled preloaded_symbols symbol. * tests/pdemo/longer_file_name_dlmain.c (main): Ditto. * ltmain.in: Don't spew spurious warnings when dlopening and dlpreopening modules. (func_generate_dlsyms): Factored out from multiple copies in the rest of the code. Generate originator keyed symbol lists. (func_extract_archives): Also factored. Extract the contents of convenience archives for linking with dependent libraries when --whole-archive is not available. [darwin]: Don't try to link $old_library unless it exists, and $lib is a bundle. * m4/ltdl.m4 (AC_LTDL_DLLIB): Check for all possible dynamic loading libraries/apis rather that stopping when an acceptable one is discovered. (LT_DLLOADERS): New variable for holding dlloaders that can be preloaded. * doc/libtool.texi: Document interface changes. * NEWS: Updated.
2004-07-15 20:14:48 +08:00
* HACKING (Licensing Rules): Explain the various license texts used for files distributed with Libtool, and update license text to match. * Makefile.am, Makefile.maint README, README.alpha, THANKS, TODO, bootstrap, clcommit.m4sh, configure.ac, libltdl/Makefile.inc, libltdl/README, libltdl/argz.c, libltdl/argz_.h, libltdl/config/general.m4sh, libltdl/config/getopt.m4sh, libltdl/config/ltmain.m4sh, libltdl/config/mailnotify.m4sh, libltdl/config/mkstamp, libltdl/configure.ac, libltdl/libltdl/lt__alloc.h, libltdl/libltdl/lt__dirent.h, libltdl/libltdl/lt__glibc.h, libltdl/libltdl/lt__private.h, libltdl/libltdl/lt__strl.h, libltdl/libltdl/lt_dlloader.h, libltdl/libltdl/lt_error.h, libltdl/libltdl/lt_system.h, libltdl/libltdl/slist.h, libltdl/loaders/dld_link.c, libltdl/loaders/dlopen.c, libltdl/loaders/dyld.c, libltdl/loaders/load_add_on.c, libltdl/loaders/loadlibrary.c, libltdl/loaders/preopen.c, libltdl/loaders/shl_load.c, libltdl/lt__alloc.c, libltdl/lt__dirent.c, libltdl/lt__strl.c, libltdl/lt_dlloader.c, libltdl/lt_error.c, libltdl/ltdl.c, libltdl/ltdl.h, libltdl/m4/argz.m4, libltdl/m4/libtool.m4, libltdl/m4/ltdl.m4, libltdl/m4/ltoptions.m4, libltdl/m4/ltsugar.m4, libltdl/m4/ltversion.in, Jlibltdl/m4/ltversion.m4, libltdl/m4/lt~obsolete.m4, libltdl/slist.c, libtoolize.m4sh, tests/am-subdir.at, tests/cdemo-conf.test, tests/cdemo-exec.test, tests/cdemo-make.test, tests/cdemo-shared.test, tests/cdemo-static.test, tests/cdemo-undef.test, tests/cdemo/Makefile.am, tests/cdemo/configure.ac, tests/cdemo/foo.c, tests/cdemo/foo.h, tests/cdemo/main.c, tests/cmdline_wrap.at, tests/convenience.at, tests/defs.m4sh, tests/demo-conf.test, tests/demo-deplibs.test, tests/demo-exec.test, tests/demo-hardcode.test, tests/demo-inst.test, tests/demo-make.test, tests/demo-nofast.test, tests/demo-noinst-link.test, tests/demo-nopic.test, tests/demo-pic.test, tests/demo-relink.test, tests/demo-shared.test, tests/demo-static.test, tests/demo-unst.test, tests/demo/Makefile.am, tests/demo/configure.ac, tests/demo/dlmain.c, tests/demo/foo.c, tests/demo/foo.h, tests/demo/hell1.c, tests/demo/hell2.c, tests/demo/hello.c, tests/demo/main.c, tests/depdemo-conf.test, tests/depdemo-exec.test, tests/depdemo-inst.test, tests/depdemo-make.test, tests/depdemo-nofast.test, tests/depdemo-relink.test, tests/depdemo-shared.test, tests/depdemo-static.test, tests/depdemo-unst.test, tests/depdemo/Makefile.am, tests/depdemo/configure.ac, tests/depdemo/l1/Makefile.am, tests/depdemo/l1/l1.c, tests/depdemo/l1/l1.h, tests/depdemo/l2/Makefile.am, tests/depdemo/l2/l2.c, tests/depdemo/l2/l2.h, tests/depdemo/l3/Makefile.am, tests/depdemo/l3/l3.c, tests/depdemo/l3/l3.h, tests/depdemo/l4/Makefile.am, tests/depdemo/l4/l4.c, tests/depdemo/l4/l4.h, tests/depdemo/main.c, tests/depdemo/sysdep.h, tests/deplibs-ident.at, tests/destdir.at, tests/duplicate_conv.at, tests/duplicate_deps.at, tests/duplicate_members.at, tests/early-libtool.at, tests/export.at, tests/f77demo-conf.test, tests/f77demo-exec.test, tests/f77demo-make.test, tests/f77demo-shared.test, tests/f77demo-static.test, tests/f77demo/Makefile.am, tests/f77demo/configure.ac, tests/f77demo/cprogram.c, tests/f77demo/foo.h, tests/f77demo/fooc.c, tests/fail.at, tests/fcdemo-conf.test, tests/fcdemo-exec.test, tests/fcdemo-make.test, tests/fcdemo-shared.test, tests/fcdemo-static.test, tests/fcdemo/Makefile.am, tests/fcdemo/configure.ac, tests/fcdemo/cprogram.c, tests/fcdemo/foo.h, tests/fcdemo/fooc.c, tests/inherited_flags.at, tests/libtoolize.at, tests/link-2.test, tests/link-order.at, tests/link-order2.at, tests/link.test, tests/lt_dlexit.at, tests/mdemo-conf.test, tests/mdemo-dryrun.test, tests/mdemo-exec.test, tests/mdemo-inst.test, tests/mdemo-make.test, tests/mdemo-shared.test, tests/mdemo-static.test, tests/mdemo-unst.test, tests/mdemo/Makefile.am, tests/mdemo/configure.ac, tests/mdemo/foo.h, tests/mdemo/foo1.c, tests/mdemo/foo2.c, tests/mdemo/main.c, tests/mdemo/mlib.c, tests/mdemo/sub.c, tests/mdemo2-conf.test, tests/mdemo2-exec.test, tests/mdemo2-make.test, tests/mdemo2/Makefile.am, tests/mdemo2/configure.ac, tests/mdemo2/main.c, tests/nomode.test, tests/nonrecursive.at, tests/objectlist.test, tests/old-m4-iface.at, tests/pdemo-conf.test, tests/pdemo-exec.test, tests/pdemo-inst.test, tests/pdemo-make.test, tests/pdemo/Makefile.am, tests/pdemo/configure.ac, tests/pdemo/foo.h, tests/pdemo/longer_file_name_dlmain.c, tests/pdemo/longer_file_name_foo.c, tests/pdemo/longer_file_name_foo2.c, tests/pdemo/longer_file_name_hell1.c, tests/pdemo/longer_file_name_hell2.c, tests/pdemo/longer_file_name_hello.c, tests/pdemo/longer_file_name_main.c, tests/quote.test, tests/recursive.at, tests/search-path.at, tests/sh.test, tests/shlibpath.at, tests/standalone.at, tests/static.at, tests/stresstest.at, tests/subproject.at, tests/suffix.test, tests/tagdemo-conf.test, tests/tagdemo-exec.test, tests/tagdemo-make.test, tests/tagdemo-shared.test, tests/tagdemo-static.test, tests/tagdemo-undef.test, tests/tagdemo/Makefile.am, tests/tagdemo/baz.cpp, tests/tagdemo/baz.h, tests/tagdemo/configure.ac, tests/tagdemo/conv.cpp, tests/tagdemo/conv.h, tests/tagdemo/foo.cpp, tests/tagdemo/foo.h, tests/tagdemo/main.cpp, tests/tagtrace.test, tests/template.at, tests/testsuite.at: Apply correct license text according to the new rules set out in HACKING.
2007-03-25 20:12:44 +08:00
GNU Libltdl is distributed in the hope that it will be useful,
This pervasive changeset makes two intertwined deep changes to the operation of libtool (neither would work alone). First, there is a new feature that allows libraries to preopen modules. This entails a backwards incompatible change to the libltdl API for separating out the preloaded symbol lists by owner. Second, in the tradition of "eating our own dogfood", libltdl now preloads its own dlloaders. The internal API for dlloaders has also had to change in a backwards incompatible way in support of the new library preloading feature. If you don't use preloaded libraries, you needn't change your project sources, though you will need to recompile against the new libltdl. The API changes are mostly confined to dlloaders, so you probably needn't worry about those (unless you have written a custom loader that you want libltdl to use): * configure.ac (AC_CONFIG_FILES): Add libltdl/loaders/Makefile. * libltdl/configure.ac (AC_CONFIG_FILES): Add loaders/Makefile. * libltdl/loaders: New directory for module loaders, to simplify Makefile rules, and to give the loaders themselves names that are unique in the first few characters. * libtoolize.in (func_copy_all_files): Copy recursively to pick up the loaders directory contents. * libltdl/loaders/Makefile.am: New file. Move module building rules to here... * libltdl/Makefile.am: ...from here. (VERSION_INFO): Bumped version info to signify interface changes. (libltdl_la_CPPFLAGS, libltdlc_la_CPPFLAGS): Set LTDLOPEN appropriately for each library. * libltdl/loader-dld_link.c, libltdl/loader-dlopen.c, libltdl/loader-dyld.c, libltdl/loader-load_add_on.c, libltdl/loader-loadlibrary.c libltdl/loader-preopen.c, libltdl/loader-shl_load.c: Moved from here... * libltdl/loaders/dld_link.c, libltdl/loaders/dlopen.c, libltdl/loaders/dyld.c, libltdl/loaders/load_add_on.c, libltdl/loaders/loadlibrary.c libltdl/loaders/preopen.c, libltdl/loaders/shl_load.c: ...to here. (get_vtable): New entry function for each. * libltdl/loaders/preopen.c (lt_dlsymlists_t): Replaced by... (symlist_chain): ...a new structure which maps lists of preloaded symbols from the object that loads them. (lt_dlpreload_open): New function to automatically open all preloaded modules belonging to a named object (ORIGINATOR). * libltdl/lt__alloc.c (lt__zalloc): New function to return a block of zeroed out new memory. * libltdl/lt__alloc.h (lt__zalloc): Prototype it. * libltdl/lt__private.h (lt__alloc_die_callback): Add missing prototype. (lt__error_strings): Make this opaque to callers. * libltdl/lt_error.c (lt__error_strings): Move the implementation to here. * libltdl/lt_dlloader.h (lt_user_dlloader): Add extra fields to make originator focused preloading possible. *BREAKS BACKWARDS COMPATIBILITY* (lt_dlloader_add): Take advantage of new fields to simplify paramater list. * libltdl/lt_system.h (LT_STR): New ANSI stringification macro. (LT_CONC): Fix it to work from within macros. * libltdl/ltdl.c (loader_init, loader_init_callback): Simplify dlloader loading. (get_vtable, preloaded_symbols): Point these at the preopen.c symbols to bootstrap the loader chain. (lt_dlinit): Load the preopen dlloader manually, and then use it to load any other preloaded dlloaders. (lt_dlloader_add): Simplify parameter list. Populate new fields. Chain new loaders according to priority field. * libltdl/ltdl.h (lt_dlsymlist): Add a new originator field. (lt_dlpreload_callback_func): Type of a callback for automatic lt_dlpreload_open loading. (LTDL_SET_PRELOADED_SYMBOLS): Adjust to hook into preloaded symbols from the "@PROGRAM@" originator. * tests/demo/dlmain.c (main): Use mangled preloaded_symbols symbol. * tests/pdemo/longer_file_name_dlmain.c (main): Ditto. * ltmain.in: Don't spew spurious warnings when dlopening and dlpreopening modules. (func_generate_dlsyms): Factored out from multiple copies in the rest of the code. Generate originator keyed symbol lists. (func_extract_archives): Also factored. Extract the contents of convenience archives for linking with dependent libraries when --whole-archive is not available. [darwin]: Don't try to link $old_library unless it exists, and $lib is a bundle. * m4/ltdl.m4 (AC_LTDL_DLLIB): Check for all possible dynamic loading libraries/apis rather that stopping when an acceptable one is discovered. (LT_DLLOADERS): New variable for holding dlloaders that can be preloaded. * doc/libtool.texi: Document interface changes. * NEWS: Updated.
2004-07-15 20:14:48 +08:00
but WITHOUT ANY WARRANTY; without even the implied warranty of
* HACKING (Licensing Rules): Explain the various license texts used for files distributed with Libtool, and update license text to match. * Makefile.am, Makefile.maint README, README.alpha, THANKS, TODO, bootstrap, clcommit.m4sh, configure.ac, libltdl/Makefile.inc, libltdl/README, libltdl/argz.c, libltdl/argz_.h, libltdl/config/general.m4sh, libltdl/config/getopt.m4sh, libltdl/config/ltmain.m4sh, libltdl/config/mailnotify.m4sh, libltdl/config/mkstamp, libltdl/configure.ac, libltdl/libltdl/lt__alloc.h, libltdl/libltdl/lt__dirent.h, libltdl/libltdl/lt__glibc.h, libltdl/libltdl/lt__private.h, libltdl/libltdl/lt__strl.h, libltdl/libltdl/lt_dlloader.h, libltdl/libltdl/lt_error.h, libltdl/libltdl/lt_system.h, libltdl/libltdl/slist.h, libltdl/loaders/dld_link.c, libltdl/loaders/dlopen.c, libltdl/loaders/dyld.c, libltdl/loaders/load_add_on.c, libltdl/loaders/loadlibrary.c, libltdl/loaders/preopen.c, libltdl/loaders/shl_load.c, libltdl/lt__alloc.c, libltdl/lt__dirent.c, libltdl/lt__strl.c, libltdl/lt_dlloader.c, libltdl/lt_error.c, libltdl/ltdl.c, libltdl/ltdl.h, libltdl/m4/argz.m4, libltdl/m4/libtool.m4, libltdl/m4/ltdl.m4, libltdl/m4/ltoptions.m4, libltdl/m4/ltsugar.m4, libltdl/m4/ltversion.in, Jlibltdl/m4/ltversion.m4, libltdl/m4/lt~obsolete.m4, libltdl/slist.c, libtoolize.m4sh, tests/am-subdir.at, tests/cdemo-conf.test, tests/cdemo-exec.test, tests/cdemo-make.test, tests/cdemo-shared.test, tests/cdemo-static.test, tests/cdemo-undef.test, tests/cdemo/Makefile.am, tests/cdemo/configure.ac, tests/cdemo/foo.c, tests/cdemo/foo.h, tests/cdemo/main.c, tests/cmdline_wrap.at, tests/convenience.at, tests/defs.m4sh, tests/demo-conf.test, tests/demo-deplibs.test, tests/demo-exec.test, tests/demo-hardcode.test, tests/demo-inst.test, tests/demo-make.test, tests/demo-nofast.test, tests/demo-noinst-link.test, tests/demo-nopic.test, tests/demo-pic.test, tests/demo-relink.test, tests/demo-shared.test, tests/demo-static.test, tests/demo-unst.test, tests/demo/Makefile.am, tests/demo/configure.ac, tests/demo/dlmain.c, tests/demo/foo.c, tests/demo/foo.h, tests/demo/hell1.c, tests/demo/hell2.c, tests/demo/hello.c, tests/demo/main.c, tests/depdemo-conf.test, tests/depdemo-exec.test, tests/depdemo-inst.test, tests/depdemo-make.test, tests/depdemo-nofast.test, tests/depdemo-relink.test, tests/depdemo-shared.test, tests/depdemo-static.test, tests/depdemo-unst.test, tests/depdemo/Makefile.am, tests/depdemo/configure.ac, tests/depdemo/l1/Makefile.am, tests/depdemo/l1/l1.c, tests/depdemo/l1/l1.h, tests/depdemo/l2/Makefile.am, tests/depdemo/l2/l2.c, tests/depdemo/l2/l2.h, tests/depdemo/l3/Makefile.am, tests/depdemo/l3/l3.c, tests/depdemo/l3/l3.h, tests/depdemo/l4/Makefile.am, tests/depdemo/l4/l4.c, tests/depdemo/l4/l4.h, tests/depdemo/main.c, tests/depdemo/sysdep.h, tests/deplibs-ident.at, tests/destdir.at, tests/duplicate_conv.at, tests/duplicate_deps.at, tests/duplicate_members.at, tests/early-libtool.at, tests/export.at, tests/f77demo-conf.test, tests/f77demo-exec.test, tests/f77demo-make.test, tests/f77demo-shared.test, tests/f77demo-static.test, tests/f77demo/Makefile.am, tests/f77demo/configure.ac, tests/f77demo/cprogram.c, tests/f77demo/foo.h, tests/f77demo/fooc.c, tests/fail.at, tests/fcdemo-conf.test, tests/fcdemo-exec.test, tests/fcdemo-make.test, tests/fcdemo-shared.test, tests/fcdemo-static.test, tests/fcdemo/Makefile.am, tests/fcdemo/configure.ac, tests/fcdemo/cprogram.c, tests/fcdemo/foo.h, tests/fcdemo/fooc.c, tests/inherited_flags.at, tests/libtoolize.at, tests/link-2.test, tests/link-order.at, tests/link-order2.at, tests/link.test, tests/lt_dlexit.at, tests/mdemo-conf.test, tests/mdemo-dryrun.test, tests/mdemo-exec.test, tests/mdemo-inst.test, tests/mdemo-make.test, tests/mdemo-shared.test, tests/mdemo-static.test, tests/mdemo-unst.test, tests/mdemo/Makefile.am, tests/mdemo/configure.ac, tests/mdemo/foo.h, tests/mdemo/foo1.c, tests/mdemo/foo2.c, tests/mdemo/main.c, tests/mdemo/mlib.c, tests/mdemo/sub.c, tests/mdemo2-conf.test, tests/mdemo2-exec.test, tests/mdemo2-make.test, tests/mdemo2/Makefile.am, tests/mdemo2/configure.ac, tests/mdemo2/main.c, tests/nomode.test, tests/nonrecursive.at, tests/objectlist.test, tests/old-m4-iface.at, tests/pdemo-conf.test, tests/pdemo-exec.test, tests/pdemo-inst.test, tests/pdemo-make.test, tests/pdemo/Makefile.am, tests/pdemo/configure.ac, tests/pdemo/foo.h, tests/pdemo/longer_file_name_dlmain.c, tests/pdemo/longer_file_name_foo.c, tests/pdemo/longer_file_name_foo2.c, tests/pdemo/longer_file_name_hell1.c, tests/pdemo/longer_file_name_hell2.c, tests/pdemo/longer_file_name_hello.c, tests/pdemo/longer_file_name_main.c, tests/quote.test, tests/recursive.at, tests/search-path.at, tests/sh.test, tests/shlibpath.at, tests/standalone.at, tests/static.at, tests/stresstest.at, tests/subproject.at, tests/suffix.test, tests/tagdemo-conf.test, tests/tagdemo-exec.test, tests/tagdemo-make.test, tests/tagdemo-shared.test, tests/tagdemo-static.test, tests/tagdemo-undef.test, tests/tagdemo/Makefile.am, tests/tagdemo/baz.cpp, tests/tagdemo/baz.h, tests/tagdemo/configure.ac, tests/tagdemo/conv.cpp, tests/tagdemo/conv.h, tests/tagdemo/foo.cpp, tests/tagdemo/foo.h, tests/tagdemo/main.cpp, tests/tagtrace.test, tests/template.at, tests/testsuite.at: Apply correct license text according to the new rules set out in HACKING.
2007-03-25 20:12:44 +08:00
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Lesser General Public License for more details.
This pervasive changeset makes two intertwined deep changes to the operation of libtool (neither would work alone). First, there is a new feature that allows libraries to preopen modules. This entails a backwards incompatible change to the libltdl API for separating out the preloaded symbol lists by owner. Second, in the tradition of "eating our own dogfood", libltdl now preloads its own dlloaders. The internal API for dlloaders has also had to change in a backwards incompatible way in support of the new library preloading feature. If you don't use preloaded libraries, you needn't change your project sources, though you will need to recompile against the new libltdl. The API changes are mostly confined to dlloaders, so you probably needn't worry about those (unless you have written a custom loader that you want libltdl to use): * configure.ac (AC_CONFIG_FILES): Add libltdl/loaders/Makefile. * libltdl/configure.ac (AC_CONFIG_FILES): Add loaders/Makefile. * libltdl/loaders: New directory for module loaders, to simplify Makefile rules, and to give the loaders themselves names that are unique in the first few characters. * libtoolize.in (func_copy_all_files): Copy recursively to pick up the loaders directory contents. * libltdl/loaders/Makefile.am: New file. Move module building rules to here... * libltdl/Makefile.am: ...from here. (VERSION_INFO): Bumped version info to signify interface changes. (libltdl_la_CPPFLAGS, libltdlc_la_CPPFLAGS): Set LTDLOPEN appropriately for each library. * libltdl/loader-dld_link.c, libltdl/loader-dlopen.c, libltdl/loader-dyld.c, libltdl/loader-load_add_on.c, libltdl/loader-loadlibrary.c libltdl/loader-preopen.c, libltdl/loader-shl_load.c: Moved from here... * libltdl/loaders/dld_link.c, libltdl/loaders/dlopen.c, libltdl/loaders/dyld.c, libltdl/loaders/load_add_on.c, libltdl/loaders/loadlibrary.c libltdl/loaders/preopen.c, libltdl/loaders/shl_load.c: ...to here. (get_vtable): New entry function for each. * libltdl/loaders/preopen.c (lt_dlsymlists_t): Replaced by... (symlist_chain): ...a new structure which maps lists of preloaded symbols from the object that loads them. (lt_dlpreload_open): New function to automatically open all preloaded modules belonging to a named object (ORIGINATOR). * libltdl/lt__alloc.c (lt__zalloc): New function to return a block of zeroed out new memory. * libltdl/lt__alloc.h (lt__zalloc): Prototype it. * libltdl/lt__private.h (lt__alloc_die_callback): Add missing prototype. (lt__error_strings): Make this opaque to callers. * libltdl/lt_error.c (lt__error_strings): Move the implementation to here. * libltdl/lt_dlloader.h (lt_user_dlloader): Add extra fields to make originator focused preloading possible. *BREAKS BACKWARDS COMPATIBILITY* (lt_dlloader_add): Take advantage of new fields to simplify paramater list. * libltdl/lt_system.h (LT_STR): New ANSI stringification macro. (LT_CONC): Fix it to work from within macros. * libltdl/ltdl.c (loader_init, loader_init_callback): Simplify dlloader loading. (get_vtable, preloaded_symbols): Point these at the preopen.c symbols to bootstrap the loader chain. (lt_dlinit): Load the preopen dlloader manually, and then use it to load any other preloaded dlloaders. (lt_dlloader_add): Simplify parameter list. Populate new fields. Chain new loaders according to priority field. * libltdl/ltdl.h (lt_dlsymlist): Add a new originator field. (lt_dlpreload_callback_func): Type of a callback for automatic lt_dlpreload_open loading. (LTDL_SET_PRELOADED_SYMBOLS): Adjust to hook into preloaded symbols from the "@PROGRAM@" originator. * tests/demo/dlmain.c (main): Use mangled preloaded_symbols symbol. * tests/pdemo/longer_file_name_dlmain.c (main): Ditto. * ltmain.in: Don't spew spurious warnings when dlopening and dlpreopening modules. (func_generate_dlsyms): Factored out from multiple copies in the rest of the code. Generate originator keyed symbol lists. (func_extract_archives): Also factored. Extract the contents of convenience archives for linking with dependent libraries when --whole-archive is not available. [darwin]: Don't try to link $old_library unless it exists, and $lib is a bundle. * m4/ltdl.m4 (AC_LTDL_DLLIB): Check for all possible dynamic loading libraries/apis rather that stopping when an acceptable one is discovered. (LT_DLLOADERS): New variable for holding dlloaders that can be preloaded. * doc/libtool.texi: Document interface changes. * NEWS: Updated.
2004-07-15 20:14:48 +08:00
You should have received a copy of the GNU Lesser General Public
* HACKING (Licensing Rules): Explain the various license texts used for files distributed with Libtool, and update license text to match. * Makefile.am, Makefile.maint README, README.alpha, THANKS, TODO, bootstrap, clcommit.m4sh, configure.ac, libltdl/Makefile.inc, libltdl/README, libltdl/argz.c, libltdl/argz_.h, libltdl/config/general.m4sh, libltdl/config/getopt.m4sh, libltdl/config/ltmain.m4sh, libltdl/config/mailnotify.m4sh, libltdl/config/mkstamp, libltdl/configure.ac, libltdl/libltdl/lt__alloc.h, libltdl/libltdl/lt__dirent.h, libltdl/libltdl/lt__glibc.h, libltdl/libltdl/lt__private.h, libltdl/libltdl/lt__strl.h, libltdl/libltdl/lt_dlloader.h, libltdl/libltdl/lt_error.h, libltdl/libltdl/lt_system.h, libltdl/libltdl/slist.h, libltdl/loaders/dld_link.c, libltdl/loaders/dlopen.c, libltdl/loaders/dyld.c, libltdl/loaders/load_add_on.c, libltdl/loaders/loadlibrary.c, libltdl/loaders/preopen.c, libltdl/loaders/shl_load.c, libltdl/lt__alloc.c, libltdl/lt__dirent.c, libltdl/lt__strl.c, libltdl/lt_dlloader.c, libltdl/lt_error.c, libltdl/ltdl.c, libltdl/ltdl.h, libltdl/m4/argz.m4, libltdl/m4/libtool.m4, libltdl/m4/ltdl.m4, libltdl/m4/ltoptions.m4, libltdl/m4/ltsugar.m4, libltdl/m4/ltversion.in, Jlibltdl/m4/ltversion.m4, libltdl/m4/lt~obsolete.m4, libltdl/slist.c, libtoolize.m4sh, tests/am-subdir.at, tests/cdemo-conf.test, tests/cdemo-exec.test, tests/cdemo-make.test, tests/cdemo-shared.test, tests/cdemo-static.test, tests/cdemo-undef.test, tests/cdemo/Makefile.am, tests/cdemo/configure.ac, tests/cdemo/foo.c, tests/cdemo/foo.h, tests/cdemo/main.c, tests/cmdline_wrap.at, tests/convenience.at, tests/defs.m4sh, tests/demo-conf.test, tests/demo-deplibs.test, tests/demo-exec.test, tests/demo-hardcode.test, tests/demo-inst.test, tests/demo-make.test, tests/demo-nofast.test, tests/demo-noinst-link.test, tests/demo-nopic.test, tests/demo-pic.test, tests/demo-relink.test, tests/demo-shared.test, tests/demo-static.test, tests/demo-unst.test, tests/demo/Makefile.am, tests/demo/configure.ac, tests/demo/dlmain.c, tests/demo/foo.c, tests/demo/foo.h, tests/demo/hell1.c, tests/demo/hell2.c, tests/demo/hello.c, tests/demo/main.c, tests/depdemo-conf.test, tests/depdemo-exec.test, tests/depdemo-inst.test, tests/depdemo-make.test, tests/depdemo-nofast.test, tests/depdemo-relink.test, tests/depdemo-shared.test, tests/depdemo-static.test, tests/depdemo-unst.test, tests/depdemo/Makefile.am, tests/depdemo/configure.ac, tests/depdemo/l1/Makefile.am, tests/depdemo/l1/l1.c, tests/depdemo/l1/l1.h, tests/depdemo/l2/Makefile.am, tests/depdemo/l2/l2.c, tests/depdemo/l2/l2.h, tests/depdemo/l3/Makefile.am, tests/depdemo/l3/l3.c, tests/depdemo/l3/l3.h, tests/depdemo/l4/Makefile.am, tests/depdemo/l4/l4.c, tests/depdemo/l4/l4.h, tests/depdemo/main.c, tests/depdemo/sysdep.h, tests/deplibs-ident.at, tests/destdir.at, tests/duplicate_conv.at, tests/duplicate_deps.at, tests/duplicate_members.at, tests/early-libtool.at, tests/export.at, tests/f77demo-conf.test, tests/f77demo-exec.test, tests/f77demo-make.test, tests/f77demo-shared.test, tests/f77demo-static.test, tests/f77demo/Makefile.am, tests/f77demo/configure.ac, tests/f77demo/cprogram.c, tests/f77demo/foo.h, tests/f77demo/fooc.c, tests/fail.at, tests/fcdemo-conf.test, tests/fcdemo-exec.test, tests/fcdemo-make.test, tests/fcdemo-shared.test, tests/fcdemo-static.test, tests/fcdemo/Makefile.am, tests/fcdemo/configure.ac, tests/fcdemo/cprogram.c, tests/fcdemo/foo.h, tests/fcdemo/fooc.c, tests/inherited_flags.at, tests/libtoolize.at, tests/link-2.test, tests/link-order.at, tests/link-order2.at, tests/link.test, tests/lt_dlexit.at, tests/mdemo-conf.test, tests/mdemo-dryrun.test, tests/mdemo-exec.test, tests/mdemo-inst.test, tests/mdemo-make.test, tests/mdemo-shared.test, tests/mdemo-static.test, tests/mdemo-unst.test, tests/mdemo/Makefile.am, tests/mdemo/configure.ac, tests/mdemo/foo.h, tests/mdemo/foo1.c, tests/mdemo/foo2.c, tests/mdemo/main.c, tests/mdemo/mlib.c, tests/mdemo/sub.c, tests/mdemo2-conf.test, tests/mdemo2-exec.test, tests/mdemo2-make.test, tests/mdemo2/Makefile.am, tests/mdemo2/configure.ac, tests/mdemo2/main.c, tests/nomode.test, tests/nonrecursive.at, tests/objectlist.test, tests/old-m4-iface.at, tests/pdemo-conf.test, tests/pdemo-exec.test, tests/pdemo-inst.test, tests/pdemo-make.test, tests/pdemo/Makefile.am, tests/pdemo/configure.ac, tests/pdemo/foo.h, tests/pdemo/longer_file_name_dlmain.c, tests/pdemo/longer_file_name_foo.c, tests/pdemo/longer_file_name_foo2.c, tests/pdemo/longer_file_name_hell1.c, tests/pdemo/longer_file_name_hell2.c, tests/pdemo/longer_file_name_hello.c, tests/pdemo/longer_file_name_main.c, tests/quote.test, tests/recursive.at, tests/search-path.at, tests/sh.test, tests/shlibpath.at, tests/standalone.at, tests/static.at, tests/stresstest.at, tests/subproject.at, tests/suffix.test, tests/tagdemo-conf.test, tests/tagdemo-exec.test, tests/tagdemo-make.test, tests/tagdemo-shared.test, tests/tagdemo-static.test, tests/tagdemo-undef.test, tests/tagdemo/Makefile.am, tests/tagdemo/baz.cpp, tests/tagdemo/baz.h, tests/tagdemo/configure.ac, tests/tagdemo/conv.cpp, tests/tagdemo/conv.h, tests/tagdemo/foo.cpp, tests/tagdemo/foo.h, tests/tagdemo/main.cpp, tests/tagtrace.test, tests/template.at, tests/testsuite.at: Apply correct license text according to the new rules set out in HACKING.
2007-03-25 20:12:44 +08:00
License along with GNU Libltdl; see the file COPYING.LIB. If not, a
copy can be downloaded from http://www.gnu.org/licenses/lgpl.html,
or obtained by writing to the Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
This pervasive changeset makes two intertwined deep changes to the operation of libtool (neither would work alone). First, there is a new feature that allows libraries to preopen modules. This entails a backwards incompatible change to the libltdl API for separating out the preloaded symbol lists by owner. Second, in the tradition of "eating our own dogfood", libltdl now preloads its own dlloaders. The internal API for dlloaders has also had to change in a backwards incompatible way in support of the new library preloading feature. If you don't use preloaded libraries, you needn't change your project sources, though you will need to recompile against the new libltdl. The API changes are mostly confined to dlloaders, so you probably needn't worry about those (unless you have written a custom loader that you want libltdl to use): * configure.ac (AC_CONFIG_FILES): Add libltdl/loaders/Makefile. * libltdl/configure.ac (AC_CONFIG_FILES): Add loaders/Makefile. * libltdl/loaders: New directory for module loaders, to simplify Makefile rules, and to give the loaders themselves names that are unique in the first few characters. * libtoolize.in (func_copy_all_files): Copy recursively to pick up the loaders directory contents. * libltdl/loaders/Makefile.am: New file. Move module building rules to here... * libltdl/Makefile.am: ...from here. (VERSION_INFO): Bumped version info to signify interface changes. (libltdl_la_CPPFLAGS, libltdlc_la_CPPFLAGS): Set LTDLOPEN appropriately for each library. * libltdl/loader-dld_link.c, libltdl/loader-dlopen.c, libltdl/loader-dyld.c, libltdl/loader-load_add_on.c, libltdl/loader-loadlibrary.c libltdl/loader-preopen.c, libltdl/loader-shl_load.c: Moved from here... * libltdl/loaders/dld_link.c, libltdl/loaders/dlopen.c, libltdl/loaders/dyld.c, libltdl/loaders/load_add_on.c, libltdl/loaders/loadlibrary.c libltdl/loaders/preopen.c, libltdl/loaders/shl_load.c: ...to here. (get_vtable): New entry function for each. * libltdl/loaders/preopen.c (lt_dlsymlists_t): Replaced by... (symlist_chain): ...a new structure which maps lists of preloaded symbols from the object that loads them. (lt_dlpreload_open): New function to automatically open all preloaded modules belonging to a named object (ORIGINATOR). * libltdl/lt__alloc.c (lt__zalloc): New function to return a block of zeroed out new memory. * libltdl/lt__alloc.h (lt__zalloc): Prototype it. * libltdl/lt__private.h (lt__alloc_die_callback): Add missing prototype. (lt__error_strings): Make this opaque to callers. * libltdl/lt_error.c (lt__error_strings): Move the implementation to here. * libltdl/lt_dlloader.h (lt_user_dlloader): Add extra fields to make originator focused preloading possible. *BREAKS BACKWARDS COMPATIBILITY* (lt_dlloader_add): Take advantage of new fields to simplify paramater list. * libltdl/lt_system.h (LT_STR): New ANSI stringification macro. (LT_CONC): Fix it to work from within macros. * libltdl/ltdl.c (loader_init, loader_init_callback): Simplify dlloader loading. (get_vtable, preloaded_symbols): Point these at the preopen.c symbols to bootstrap the loader chain. (lt_dlinit): Load the preopen dlloader manually, and then use it to load any other preloaded dlloaders. (lt_dlloader_add): Simplify parameter list. Populate new fields. Chain new loaders according to priority field. * libltdl/ltdl.h (lt_dlsymlist): Add a new originator field. (lt_dlpreload_callback_func): Type of a callback for automatic lt_dlpreload_open loading. (LTDL_SET_PRELOADED_SYMBOLS): Adjust to hook into preloaded symbols from the "@PROGRAM@" originator. * tests/demo/dlmain.c (main): Use mangled preloaded_symbols symbol. * tests/pdemo/longer_file_name_dlmain.c (main): Ditto. * ltmain.in: Don't spew spurious warnings when dlopening and dlpreopening modules. (func_generate_dlsyms): Factored out from multiple copies in the rest of the code. Generate originator keyed symbol lists. (func_extract_archives): Also factored. Extract the contents of convenience archives for linking with dependent libraries when --whole-archive is not available. [darwin]: Don't try to link $old_library unless it exists, and $lib is a bundle. * m4/ltdl.m4 (AC_LTDL_DLLIB): Check for all possible dynamic loading libraries/apis rather that stopping when an acceptable one is discovered. (LT_DLLOADERS): New variable for holding dlloaders that can be preloaded. * doc/libtool.texi: Document interface changes. * NEWS: Updated.
2004-07-15 20:14:48 +08:00
*/
#include "lt__private.h"
#include "lt_dlloader.h"
This pervasive changeset makes two intertwined deep changes to the operation of libtool (neither would work alone). First, there is a new feature that allows libraries to preopen modules. This entails a backwards incompatible change to the libltdl API for separating out the preloaded symbol lists by owner. Second, in the tradition of "eating our own dogfood", libltdl now preloads its own dlloaders. The internal API for dlloaders has also had to change in a backwards incompatible way in support of the new library preloading feature. If you don't use preloaded libraries, you needn't change your project sources, though you will need to recompile against the new libltdl. The API changes are mostly confined to dlloaders, so you probably needn't worry about those (unless you have written a custom loader that you want libltdl to use): * configure.ac (AC_CONFIG_FILES): Add libltdl/loaders/Makefile. * libltdl/configure.ac (AC_CONFIG_FILES): Add loaders/Makefile. * libltdl/loaders: New directory for module loaders, to simplify Makefile rules, and to give the loaders themselves names that are unique in the first few characters. * libtoolize.in (func_copy_all_files): Copy recursively to pick up the loaders directory contents. * libltdl/loaders/Makefile.am: New file. Move module building rules to here... * libltdl/Makefile.am: ...from here. (VERSION_INFO): Bumped version info to signify interface changes. (libltdl_la_CPPFLAGS, libltdlc_la_CPPFLAGS): Set LTDLOPEN appropriately for each library. * libltdl/loader-dld_link.c, libltdl/loader-dlopen.c, libltdl/loader-dyld.c, libltdl/loader-load_add_on.c, libltdl/loader-loadlibrary.c libltdl/loader-preopen.c, libltdl/loader-shl_load.c: Moved from here... * libltdl/loaders/dld_link.c, libltdl/loaders/dlopen.c, libltdl/loaders/dyld.c, libltdl/loaders/load_add_on.c, libltdl/loaders/loadlibrary.c libltdl/loaders/preopen.c, libltdl/loaders/shl_load.c: ...to here. (get_vtable): New entry function for each. * libltdl/loaders/preopen.c (lt_dlsymlists_t): Replaced by... (symlist_chain): ...a new structure which maps lists of preloaded symbols from the object that loads them. (lt_dlpreload_open): New function to automatically open all preloaded modules belonging to a named object (ORIGINATOR). * libltdl/lt__alloc.c (lt__zalloc): New function to return a block of zeroed out new memory. * libltdl/lt__alloc.h (lt__zalloc): Prototype it. * libltdl/lt__private.h (lt__alloc_die_callback): Add missing prototype. (lt__error_strings): Make this opaque to callers. * libltdl/lt_error.c (lt__error_strings): Move the implementation to here. * libltdl/lt_dlloader.h (lt_user_dlloader): Add extra fields to make originator focused preloading possible. *BREAKS BACKWARDS COMPATIBILITY* (lt_dlloader_add): Take advantage of new fields to simplify paramater list. * libltdl/lt_system.h (LT_STR): New ANSI stringification macro. (LT_CONC): Fix it to work from within macros. * libltdl/ltdl.c (loader_init, loader_init_callback): Simplify dlloader loading. (get_vtable, preloaded_symbols): Point these at the preopen.c symbols to bootstrap the loader chain. (lt_dlinit): Load the preopen dlloader manually, and then use it to load any other preloaded dlloaders. (lt_dlloader_add): Simplify parameter list. Populate new fields. Chain new loaders according to priority field. * libltdl/ltdl.h (lt_dlsymlist): Add a new originator field. (lt_dlpreload_callback_func): Type of a callback for automatic lt_dlpreload_open loading. (LTDL_SET_PRELOADED_SYMBOLS): Adjust to hook into preloaded symbols from the "@PROGRAM@" originator. * tests/demo/dlmain.c (main): Use mangled preloaded_symbols symbol. * tests/pdemo/longer_file_name_dlmain.c (main): Ditto. * ltmain.in: Don't spew spurious warnings when dlopening and dlpreopening modules. (func_generate_dlsyms): Factored out from multiple copies in the rest of the code. Generate originator keyed symbol lists. (func_extract_archives): Also factored. Extract the contents of convenience archives for linking with dependent libraries when --whole-archive is not available. [darwin]: Don't try to link $old_library unless it exists, and $lib is a bundle. * m4/ltdl.m4 (AC_LTDL_DLLIB): Check for all possible dynamic loading libraries/apis rather that stopping when an acceptable one is discovered. (LT_DLLOADERS): New variable for holding dlloaders that can be preloaded. * doc/libtool.texi: Document interface changes. * NEWS: Updated.
2004-07-15 20:14:48 +08:00
/* Use the preprocessor to rename non-static symbols to avoid namespace
collisions when the loader code is statically linked into libltdl.
Use the "<module_name>_LTX_" prefix so that the symbol addresses can
be fetched from the preloaded symbol list by lt_dlsym(): */
#define get_vtable preopen_LTX_get_vtable
LT_BEGIN_C_DECLS
Split lt_dlloader management into a separate file, and factor `loaders' list management into a new SList ADT. In the process, the API for writing loaders is a little cleaner, so all the existing loaders were tweaked to take advantage of that: * libltdl/slist.h, libltdl/slist.c: New files implementing a generic singly linked list container ADT. The ADT is purely internal, and none of its API's are visible from an installed libltdl. * libltdl/lt_dlloader.h (lt_dlloader): Removed next field again :-) Renamed to lt_dlvtable for API. Changed all callers. (lt_dlloader_get): New function to turn an lt_dlloader into its associated lt_dlvtable. (lt_dlloader_add): Removed unused data parameter. The caller data belongs to (and is set by) the loader itself, not the loader's client. Changed all callers. (lt_dlloader_name, lt_dlloader_data): Removed. Use lt_dlloader_get instead! * libltdl/lt__private.h: Include slist.h. (lt__alloc_die_callback): Add missing LT_SCOPE to declaration. (lt_dlhandle_struct): Use lt_dlvtable instead of opaque lt_dlloader. * libltdl/ltdl.c (lt_dlexit): Rewritten for the new loader API. (loaders, lt_dlloader_add, lt_dlloader_remove, lt_dlloader_next, lt_dlloader_find): Moved from here... * libltdl/lt_dlloader.c ((loaders, lt_dlloader_add, lt_dlloader_remove, lt_dlloader_next, lt_dlloader_find): ...to here. And rewritten in terms of new SList interface. * libltdl/ltdl.c (lt_dlexit, tryall_dlopen): Rewritten in terms of new lt_dlloader interface. * libltdl/Makefile.am (libdlloader_la_SOURCES): Add slist.h and slist.c. Move lt_dlloader.h from here... (pkginclude_HEADERS): ...to here. (libltdl_la_SOURCES): Add lt_dlloader.c and lt_dlloader.h.
2004-07-15 20:33:20 +08:00
LT_SCOPE lt_dlvtable *get_vtable (lt_user_data loader_data);
LT_END_C_DECLS
This pervasive changeset makes two intertwined deep changes to the operation of libtool (neither would work alone). First, there is a new feature that allows libraries to preopen modules. This entails a backwards incompatible change to the libltdl API for separating out the preloaded symbol lists by owner. Second, in the tradition of "eating our own dogfood", libltdl now preloads its own dlloaders. The internal API for dlloaders has also had to change in a backwards incompatible way in support of the new library preloading feature. If you don't use preloaded libraries, you needn't change your project sources, though you will need to recompile against the new libltdl. The API changes are mostly confined to dlloaders, so you probably needn't worry about those (unless you have written a custom loader that you want libltdl to use): * configure.ac (AC_CONFIG_FILES): Add libltdl/loaders/Makefile. * libltdl/configure.ac (AC_CONFIG_FILES): Add loaders/Makefile. * libltdl/loaders: New directory for module loaders, to simplify Makefile rules, and to give the loaders themselves names that are unique in the first few characters. * libtoolize.in (func_copy_all_files): Copy recursively to pick up the loaders directory contents. * libltdl/loaders/Makefile.am: New file. Move module building rules to here... * libltdl/Makefile.am: ...from here. (VERSION_INFO): Bumped version info to signify interface changes. (libltdl_la_CPPFLAGS, libltdlc_la_CPPFLAGS): Set LTDLOPEN appropriately for each library. * libltdl/loader-dld_link.c, libltdl/loader-dlopen.c, libltdl/loader-dyld.c, libltdl/loader-load_add_on.c, libltdl/loader-loadlibrary.c libltdl/loader-preopen.c, libltdl/loader-shl_load.c: Moved from here... * libltdl/loaders/dld_link.c, libltdl/loaders/dlopen.c, libltdl/loaders/dyld.c, libltdl/loaders/load_add_on.c, libltdl/loaders/loadlibrary.c libltdl/loaders/preopen.c, libltdl/loaders/shl_load.c: ...to here. (get_vtable): New entry function for each. * libltdl/loaders/preopen.c (lt_dlsymlists_t): Replaced by... (symlist_chain): ...a new structure which maps lists of preloaded symbols from the object that loads them. (lt_dlpreload_open): New function to automatically open all preloaded modules belonging to a named object (ORIGINATOR). * libltdl/lt__alloc.c (lt__zalloc): New function to return a block of zeroed out new memory. * libltdl/lt__alloc.h (lt__zalloc): Prototype it. * libltdl/lt__private.h (lt__alloc_die_callback): Add missing prototype. (lt__error_strings): Make this opaque to callers. * libltdl/lt_error.c (lt__error_strings): Move the implementation to here. * libltdl/lt_dlloader.h (lt_user_dlloader): Add extra fields to make originator focused preloading possible. *BREAKS BACKWARDS COMPATIBILITY* (lt_dlloader_add): Take advantage of new fields to simplify paramater list. * libltdl/lt_system.h (LT_STR): New ANSI stringification macro. (LT_CONC): Fix it to work from within macros. * libltdl/ltdl.c (loader_init, loader_init_callback): Simplify dlloader loading. (get_vtable, preloaded_symbols): Point these at the preopen.c symbols to bootstrap the loader chain. (lt_dlinit): Load the preopen dlloader manually, and then use it to load any other preloaded dlloaders. (lt_dlloader_add): Simplify parameter list. Populate new fields. Chain new loaders according to priority field. * libltdl/ltdl.h (lt_dlsymlist): Add a new originator field. (lt_dlpreload_callback_func): Type of a callback for automatic lt_dlpreload_open loading. (LTDL_SET_PRELOADED_SYMBOLS): Adjust to hook into preloaded symbols from the "@PROGRAM@" originator. * tests/demo/dlmain.c (main): Use mangled preloaded_symbols symbol. * tests/pdemo/longer_file_name_dlmain.c (main): Ditto. * ltmain.in: Don't spew spurious warnings when dlopening and dlpreopening modules. (func_generate_dlsyms): Factored out from multiple copies in the rest of the code. Generate originator keyed symbol lists. (func_extract_archives): Also factored. Extract the contents of convenience archives for linking with dependent libraries when --whole-archive is not available. [darwin]: Don't try to link $old_library unless it exists, and $lib is a bundle. * m4/ltdl.m4 (AC_LTDL_DLLIB): Check for all possible dynamic loading libraries/apis rather that stopping when an acceptable one is discovered. (LT_DLLOADERS): New variable for holding dlloaders that can be preloaded. * doc/libtool.texi: Document interface changes. * NEWS: Updated.
2004-07-15 20:14:48 +08:00
/* Boilerplate code to set up the vtable for hooking this loader into
libltdl's loader list: */
static int vl_init (lt_user_data loader_data);
static int vl_exit (lt_user_data loader_data);
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 22:38:50 +08:00
static lt_module vm_open (lt_user_data loader_data, const char *filename,
lt_dladvise advise);
This pervasive changeset makes two intertwined deep changes to the operation of libtool (neither would work alone). First, there is a new feature that allows libraries to preopen modules. This entails a backwards incompatible change to the libltdl API for separating out the preloaded symbol lists by owner. Second, in the tradition of "eating our own dogfood", libltdl now preloads its own dlloaders. The internal API for dlloaders has also had to change in a backwards incompatible way in support of the new library preloading feature. If you don't use preloaded libraries, you needn't change your project sources, though you will need to recompile against the new libltdl. The API changes are mostly confined to dlloaders, so you probably needn't worry about those (unless you have written a custom loader that you want libltdl to use): * configure.ac (AC_CONFIG_FILES): Add libltdl/loaders/Makefile. * libltdl/configure.ac (AC_CONFIG_FILES): Add loaders/Makefile. * libltdl/loaders: New directory for module loaders, to simplify Makefile rules, and to give the loaders themselves names that are unique in the first few characters. * libtoolize.in (func_copy_all_files): Copy recursively to pick up the loaders directory contents. * libltdl/loaders/Makefile.am: New file. Move module building rules to here... * libltdl/Makefile.am: ...from here. (VERSION_INFO): Bumped version info to signify interface changes. (libltdl_la_CPPFLAGS, libltdlc_la_CPPFLAGS): Set LTDLOPEN appropriately for each library. * libltdl/loader-dld_link.c, libltdl/loader-dlopen.c, libltdl/loader-dyld.c, libltdl/loader-load_add_on.c, libltdl/loader-loadlibrary.c libltdl/loader-preopen.c, libltdl/loader-shl_load.c: Moved from here... * libltdl/loaders/dld_link.c, libltdl/loaders/dlopen.c, libltdl/loaders/dyld.c, libltdl/loaders/load_add_on.c, libltdl/loaders/loadlibrary.c libltdl/loaders/preopen.c, libltdl/loaders/shl_load.c: ...to here. (get_vtable): New entry function for each. * libltdl/loaders/preopen.c (lt_dlsymlists_t): Replaced by... (symlist_chain): ...a new structure which maps lists of preloaded symbols from the object that loads them. (lt_dlpreload_open): New function to automatically open all preloaded modules belonging to a named object (ORIGINATOR). * libltdl/lt__alloc.c (lt__zalloc): New function to return a block of zeroed out new memory. * libltdl/lt__alloc.h (lt__zalloc): Prototype it. * libltdl/lt__private.h (lt__alloc_die_callback): Add missing prototype. (lt__error_strings): Make this opaque to callers. * libltdl/lt_error.c (lt__error_strings): Move the implementation to here. * libltdl/lt_dlloader.h (lt_user_dlloader): Add extra fields to make originator focused preloading possible. *BREAKS BACKWARDS COMPATIBILITY* (lt_dlloader_add): Take advantage of new fields to simplify paramater list. * libltdl/lt_system.h (LT_STR): New ANSI stringification macro. (LT_CONC): Fix it to work from within macros. * libltdl/ltdl.c (loader_init, loader_init_callback): Simplify dlloader loading. (get_vtable, preloaded_symbols): Point these at the preopen.c symbols to bootstrap the loader chain. (lt_dlinit): Load the preopen dlloader manually, and then use it to load any other preloaded dlloaders. (lt_dlloader_add): Simplify parameter list. Populate new fields. Chain new loaders according to priority field. * libltdl/ltdl.h (lt_dlsymlist): Add a new originator field. (lt_dlpreload_callback_func): Type of a callback for automatic lt_dlpreload_open loading. (LTDL_SET_PRELOADED_SYMBOLS): Adjust to hook into preloaded symbols from the "@PROGRAM@" originator. * tests/demo/dlmain.c (main): Use mangled preloaded_symbols symbol. * tests/pdemo/longer_file_name_dlmain.c (main): Ditto. * ltmain.in: Don't spew spurious warnings when dlopening and dlpreopening modules. (func_generate_dlsyms): Factored out from multiple copies in the rest of the code. Generate originator keyed symbol lists. (func_extract_archives): Also factored. Extract the contents of convenience archives for linking with dependent libraries when --whole-archive is not available. [darwin]: Don't try to link $old_library unless it exists, and $lib is a bundle. * m4/ltdl.m4 (AC_LTDL_DLLIB): Check for all possible dynamic loading libraries/apis rather that stopping when an acceptable one is discovered. (LT_DLLOADERS): New variable for holding dlloaders that can be preloaded. * doc/libtool.texi: Document interface changes. * NEWS: Updated.
2004-07-15 20:14:48 +08:00
static int vm_close (lt_user_data loader_data, lt_module module);
static void * vm_sym (lt_user_data loader_data, lt_module module,
const char *symbolname);
/* Return the vtable for this loader, only the name and sym_prefix
attributes (plus the virtual function implementations, obviously)
change between loaders. */
Split lt_dlloader management into a separate file, and factor `loaders' list management into a new SList ADT. In the process, the API for writing loaders is a little cleaner, so all the existing loaders were tweaked to take advantage of that: * libltdl/slist.h, libltdl/slist.c: New files implementing a generic singly linked list container ADT. The ADT is purely internal, and none of its API's are visible from an installed libltdl. * libltdl/lt_dlloader.h (lt_dlloader): Removed next field again :-) Renamed to lt_dlvtable for API. Changed all callers. (lt_dlloader_get): New function to turn an lt_dlloader into its associated lt_dlvtable. (lt_dlloader_add): Removed unused data parameter. The caller data belongs to (and is set by) the loader itself, not the loader's client. Changed all callers. (lt_dlloader_name, lt_dlloader_data): Removed. Use lt_dlloader_get instead! * libltdl/lt__private.h: Include slist.h. (lt__alloc_die_callback): Add missing LT_SCOPE to declaration. (lt_dlhandle_struct): Use lt_dlvtable instead of opaque lt_dlloader. * libltdl/ltdl.c (lt_dlexit): Rewritten for the new loader API. (loaders, lt_dlloader_add, lt_dlloader_remove, lt_dlloader_next, lt_dlloader_find): Moved from here... * libltdl/lt_dlloader.c ((loaders, lt_dlloader_add, lt_dlloader_remove, lt_dlloader_next, lt_dlloader_find): ...to here. And rewritten in terms of new SList interface. * libltdl/ltdl.c (lt_dlexit, tryall_dlopen): Rewritten in terms of new lt_dlloader interface. * libltdl/Makefile.am (libdlloader_la_SOURCES): Add slist.h and slist.c. Move lt_dlloader.h from here... (pkginclude_HEADERS): ...to here. (libltdl_la_SOURCES): Add lt_dlloader.c and lt_dlloader.h.
2004-07-15 20:33:20 +08:00
lt_dlvtable *
This pervasive changeset makes two intertwined deep changes to the operation of libtool (neither would work alone). First, there is a new feature that allows libraries to preopen modules. This entails a backwards incompatible change to the libltdl API for separating out the preloaded symbol lists by owner. Second, in the tradition of "eating our own dogfood", libltdl now preloads its own dlloaders. The internal API for dlloaders has also had to change in a backwards incompatible way in support of the new library preloading feature. If you don't use preloaded libraries, you needn't change your project sources, though you will need to recompile against the new libltdl. The API changes are mostly confined to dlloaders, so you probably needn't worry about those (unless you have written a custom loader that you want libltdl to use): * configure.ac (AC_CONFIG_FILES): Add libltdl/loaders/Makefile. * libltdl/configure.ac (AC_CONFIG_FILES): Add loaders/Makefile. * libltdl/loaders: New directory for module loaders, to simplify Makefile rules, and to give the loaders themselves names that are unique in the first few characters. * libtoolize.in (func_copy_all_files): Copy recursively to pick up the loaders directory contents. * libltdl/loaders/Makefile.am: New file. Move module building rules to here... * libltdl/Makefile.am: ...from here. (VERSION_INFO): Bumped version info to signify interface changes. (libltdl_la_CPPFLAGS, libltdlc_la_CPPFLAGS): Set LTDLOPEN appropriately for each library. * libltdl/loader-dld_link.c, libltdl/loader-dlopen.c, libltdl/loader-dyld.c, libltdl/loader-load_add_on.c, libltdl/loader-loadlibrary.c libltdl/loader-preopen.c, libltdl/loader-shl_load.c: Moved from here... * libltdl/loaders/dld_link.c, libltdl/loaders/dlopen.c, libltdl/loaders/dyld.c, libltdl/loaders/load_add_on.c, libltdl/loaders/loadlibrary.c libltdl/loaders/preopen.c, libltdl/loaders/shl_load.c: ...to here. (get_vtable): New entry function for each. * libltdl/loaders/preopen.c (lt_dlsymlists_t): Replaced by... (symlist_chain): ...a new structure which maps lists of preloaded symbols from the object that loads them. (lt_dlpreload_open): New function to automatically open all preloaded modules belonging to a named object (ORIGINATOR). * libltdl/lt__alloc.c (lt__zalloc): New function to return a block of zeroed out new memory. * libltdl/lt__alloc.h (lt__zalloc): Prototype it. * libltdl/lt__private.h (lt__alloc_die_callback): Add missing prototype. (lt__error_strings): Make this opaque to callers. * libltdl/lt_error.c (lt__error_strings): Move the implementation to here. * libltdl/lt_dlloader.h (lt_user_dlloader): Add extra fields to make originator focused preloading possible. *BREAKS BACKWARDS COMPATIBILITY* (lt_dlloader_add): Take advantage of new fields to simplify paramater list. * libltdl/lt_system.h (LT_STR): New ANSI stringification macro. (LT_CONC): Fix it to work from within macros. * libltdl/ltdl.c (loader_init, loader_init_callback): Simplify dlloader loading. (get_vtable, preloaded_symbols): Point these at the preopen.c symbols to bootstrap the loader chain. (lt_dlinit): Load the preopen dlloader manually, and then use it to load any other preloaded dlloaders. (lt_dlloader_add): Simplify parameter list. Populate new fields. Chain new loaders according to priority field. * libltdl/ltdl.h (lt_dlsymlist): Add a new originator field. (lt_dlpreload_callback_func): Type of a callback for automatic lt_dlpreload_open loading. (LTDL_SET_PRELOADED_SYMBOLS): Adjust to hook into preloaded symbols from the "@PROGRAM@" originator. * tests/demo/dlmain.c (main): Use mangled preloaded_symbols symbol. * tests/pdemo/longer_file_name_dlmain.c (main): Ditto. * ltmain.in: Don't spew spurious warnings when dlopening and dlpreopening modules. (func_generate_dlsyms): Factored out from multiple copies in the rest of the code. Generate originator keyed symbol lists. (func_extract_archives): Also factored. Extract the contents of convenience archives for linking with dependent libraries when --whole-archive is not available. [darwin]: Don't try to link $old_library unless it exists, and $lib is a bundle. * m4/ltdl.m4 (AC_LTDL_DLLIB): Check for all possible dynamic loading libraries/apis rather that stopping when an acceptable one is discovered. (LT_DLLOADERS): New variable for holding dlloaders that can be preloaded. * doc/libtool.texi: Document interface changes. * NEWS: Updated.
2004-07-15 20:14:48 +08:00
get_vtable (lt_user_data loader_data)
{
Split lt_dlloader management into a separate file, and factor `loaders' list management into a new SList ADT. In the process, the API for writing loaders is a little cleaner, so all the existing loaders were tweaked to take advantage of that: * libltdl/slist.h, libltdl/slist.c: New files implementing a generic singly linked list container ADT. The ADT is purely internal, and none of its API's are visible from an installed libltdl. * libltdl/lt_dlloader.h (lt_dlloader): Removed next field again :-) Renamed to lt_dlvtable for API. Changed all callers. (lt_dlloader_get): New function to turn an lt_dlloader into its associated lt_dlvtable. (lt_dlloader_add): Removed unused data parameter. The caller data belongs to (and is set by) the loader itself, not the loader's client. Changed all callers. (lt_dlloader_name, lt_dlloader_data): Removed. Use lt_dlloader_get instead! * libltdl/lt__private.h: Include slist.h. (lt__alloc_die_callback): Add missing LT_SCOPE to declaration. (lt_dlhandle_struct): Use lt_dlvtable instead of opaque lt_dlloader. * libltdl/ltdl.c (lt_dlexit): Rewritten for the new loader API. (loaders, lt_dlloader_add, lt_dlloader_remove, lt_dlloader_next, lt_dlloader_find): Moved from here... * libltdl/lt_dlloader.c ((loaders, lt_dlloader_add, lt_dlloader_remove, lt_dlloader_next, lt_dlloader_find): ...to here. And rewritten in terms of new SList interface. * libltdl/ltdl.c (lt_dlexit, tryall_dlopen): Rewritten in terms of new lt_dlloader interface. * libltdl/Makefile.am (libdlloader_la_SOURCES): Add slist.h and slist.c. Move lt_dlloader.h from here... (pkginclude_HEADERS): ...to here. (libltdl_la_SOURCES): Add lt_dlloader.c and lt_dlloader.h.
2004-07-15 20:33:20 +08:00
static lt_dlvtable *vtable = 0;
This pervasive changeset makes two intertwined deep changes to the operation of libtool (neither would work alone). First, there is a new feature that allows libraries to preopen modules. This entails a backwards incompatible change to the libltdl API for separating out the preloaded symbol lists by owner. Second, in the tradition of "eating our own dogfood", libltdl now preloads its own dlloaders. The internal API for dlloaders has also had to change in a backwards incompatible way in support of the new library preloading feature. If you don't use preloaded libraries, you needn't change your project sources, though you will need to recompile against the new libltdl. The API changes are mostly confined to dlloaders, so you probably needn't worry about those (unless you have written a custom loader that you want libltdl to use): * configure.ac (AC_CONFIG_FILES): Add libltdl/loaders/Makefile. * libltdl/configure.ac (AC_CONFIG_FILES): Add loaders/Makefile. * libltdl/loaders: New directory for module loaders, to simplify Makefile rules, and to give the loaders themselves names that are unique in the first few characters. * libtoolize.in (func_copy_all_files): Copy recursively to pick up the loaders directory contents. * libltdl/loaders/Makefile.am: New file. Move module building rules to here... * libltdl/Makefile.am: ...from here. (VERSION_INFO): Bumped version info to signify interface changes. (libltdl_la_CPPFLAGS, libltdlc_la_CPPFLAGS): Set LTDLOPEN appropriately for each library. * libltdl/loader-dld_link.c, libltdl/loader-dlopen.c, libltdl/loader-dyld.c, libltdl/loader-load_add_on.c, libltdl/loader-loadlibrary.c libltdl/loader-preopen.c, libltdl/loader-shl_load.c: Moved from here... * libltdl/loaders/dld_link.c, libltdl/loaders/dlopen.c, libltdl/loaders/dyld.c, libltdl/loaders/load_add_on.c, libltdl/loaders/loadlibrary.c libltdl/loaders/preopen.c, libltdl/loaders/shl_load.c: ...to here. (get_vtable): New entry function for each. * libltdl/loaders/preopen.c (lt_dlsymlists_t): Replaced by... (symlist_chain): ...a new structure which maps lists of preloaded symbols from the object that loads them. (lt_dlpreload_open): New function to automatically open all preloaded modules belonging to a named object (ORIGINATOR). * libltdl/lt__alloc.c (lt__zalloc): New function to return a block of zeroed out new memory. * libltdl/lt__alloc.h (lt__zalloc): Prototype it. * libltdl/lt__private.h (lt__alloc_die_callback): Add missing prototype. (lt__error_strings): Make this opaque to callers. * libltdl/lt_error.c (lt__error_strings): Move the implementation to here. * libltdl/lt_dlloader.h (lt_user_dlloader): Add extra fields to make originator focused preloading possible. *BREAKS BACKWARDS COMPATIBILITY* (lt_dlloader_add): Take advantage of new fields to simplify paramater list. * libltdl/lt_system.h (LT_STR): New ANSI stringification macro. (LT_CONC): Fix it to work from within macros. * libltdl/ltdl.c (loader_init, loader_init_callback): Simplify dlloader loading. (get_vtable, preloaded_symbols): Point these at the preopen.c symbols to bootstrap the loader chain. (lt_dlinit): Load the preopen dlloader manually, and then use it to load any other preloaded dlloaders. (lt_dlloader_add): Simplify parameter list. Populate new fields. Chain new loaders according to priority field. * libltdl/ltdl.h (lt_dlsymlist): Add a new originator field. (lt_dlpreload_callback_func): Type of a callback for automatic lt_dlpreload_open loading. (LTDL_SET_PRELOADED_SYMBOLS): Adjust to hook into preloaded symbols from the "@PROGRAM@" originator. * tests/demo/dlmain.c (main): Use mangled preloaded_symbols symbol. * tests/pdemo/longer_file_name_dlmain.c (main): Ditto. * ltmain.in: Don't spew spurious warnings when dlopening and dlpreopening modules. (func_generate_dlsyms): Factored out from multiple copies in the rest of the code. Generate originator keyed symbol lists. (func_extract_archives): Also factored. Extract the contents of convenience archives for linking with dependent libraries when --whole-archive is not available. [darwin]: Don't try to link $old_library unless it exists, and $lib is a bundle. * m4/ltdl.m4 (AC_LTDL_DLLIB): Check for all possible dynamic loading libraries/apis rather that stopping when an acceptable one is discovered. (LT_DLLOADERS): New variable for holding dlloaders that can be preloaded. * doc/libtool.texi: Document interface changes. * NEWS: Updated.
2004-07-15 20:14:48 +08:00
if (!vtable)
{
vtable = (lt_dlvtable *) lt__zalloc (sizeof *vtable);
This pervasive changeset makes two intertwined deep changes to the operation of libtool (neither would work alone). First, there is a new feature that allows libraries to preopen modules. This entails a backwards incompatible change to the libltdl API for separating out the preloaded symbol lists by owner. Second, in the tradition of "eating our own dogfood", libltdl now preloads its own dlloaders. The internal API for dlloaders has also had to change in a backwards incompatible way in support of the new library preloading feature. If you don't use preloaded libraries, you needn't change your project sources, though you will need to recompile against the new libltdl. The API changes are mostly confined to dlloaders, so you probably needn't worry about those (unless you have written a custom loader that you want libltdl to use): * configure.ac (AC_CONFIG_FILES): Add libltdl/loaders/Makefile. * libltdl/configure.ac (AC_CONFIG_FILES): Add loaders/Makefile. * libltdl/loaders: New directory for module loaders, to simplify Makefile rules, and to give the loaders themselves names that are unique in the first few characters. * libtoolize.in (func_copy_all_files): Copy recursively to pick up the loaders directory contents. * libltdl/loaders/Makefile.am: New file. Move module building rules to here... * libltdl/Makefile.am: ...from here. (VERSION_INFO): Bumped version info to signify interface changes. (libltdl_la_CPPFLAGS, libltdlc_la_CPPFLAGS): Set LTDLOPEN appropriately for each library. * libltdl/loader-dld_link.c, libltdl/loader-dlopen.c, libltdl/loader-dyld.c, libltdl/loader-load_add_on.c, libltdl/loader-loadlibrary.c libltdl/loader-preopen.c, libltdl/loader-shl_load.c: Moved from here... * libltdl/loaders/dld_link.c, libltdl/loaders/dlopen.c, libltdl/loaders/dyld.c, libltdl/loaders/load_add_on.c, libltdl/loaders/loadlibrary.c libltdl/loaders/preopen.c, libltdl/loaders/shl_load.c: ...to here. (get_vtable): New entry function for each. * libltdl/loaders/preopen.c (lt_dlsymlists_t): Replaced by... (symlist_chain): ...a new structure which maps lists of preloaded symbols from the object that loads them. (lt_dlpreload_open): New function to automatically open all preloaded modules belonging to a named object (ORIGINATOR). * libltdl/lt__alloc.c (lt__zalloc): New function to return a block of zeroed out new memory. * libltdl/lt__alloc.h (lt__zalloc): Prototype it. * libltdl/lt__private.h (lt__alloc_die_callback): Add missing prototype. (lt__error_strings): Make this opaque to callers. * libltdl/lt_error.c (lt__error_strings): Move the implementation to here. * libltdl/lt_dlloader.h (lt_user_dlloader): Add extra fields to make originator focused preloading possible. *BREAKS BACKWARDS COMPATIBILITY* (lt_dlloader_add): Take advantage of new fields to simplify paramater list. * libltdl/lt_system.h (LT_STR): New ANSI stringification macro. (LT_CONC): Fix it to work from within macros. * libltdl/ltdl.c (loader_init, loader_init_callback): Simplify dlloader loading. (get_vtable, preloaded_symbols): Point these at the preopen.c symbols to bootstrap the loader chain. (lt_dlinit): Load the preopen dlloader manually, and then use it to load any other preloaded dlloaders. (lt_dlloader_add): Simplify parameter list. Populate new fields. Chain new loaders according to priority field. * libltdl/ltdl.h (lt_dlsymlist): Add a new originator field. (lt_dlpreload_callback_func): Type of a callback for automatic lt_dlpreload_open loading. (LTDL_SET_PRELOADED_SYMBOLS): Adjust to hook into preloaded symbols from the "@PROGRAM@" originator. * tests/demo/dlmain.c (main): Use mangled preloaded_symbols symbol. * tests/pdemo/longer_file_name_dlmain.c (main): Ditto. * ltmain.in: Don't spew spurious warnings when dlopening and dlpreopening modules. (func_generate_dlsyms): Factored out from multiple copies in the rest of the code. Generate originator keyed symbol lists. (func_extract_archives): Also factored. Extract the contents of convenience archives for linking with dependent libraries when --whole-archive is not available. [darwin]: Don't try to link $old_library unless it exists, and $lib is a bundle. * m4/ltdl.m4 (AC_LTDL_DLLIB): Check for all possible dynamic loading libraries/apis rather that stopping when an acceptable one is discovered. (LT_DLLOADERS): New variable for holding dlloaders that can be preloaded. * doc/libtool.texi: Document interface changes. * NEWS: Updated.
2004-07-15 20:14:48 +08:00
}
Split lt_dlloader management into a separate file, and factor `loaders' list management into a new SList ADT. In the process, the API for writing loaders is a little cleaner, so all the existing loaders were tweaked to take advantage of that: * libltdl/slist.h, libltdl/slist.c: New files implementing a generic singly linked list container ADT. The ADT is purely internal, and none of its API's are visible from an installed libltdl. * libltdl/lt_dlloader.h (lt_dlloader): Removed next field again :-) Renamed to lt_dlvtable for API. Changed all callers. (lt_dlloader_get): New function to turn an lt_dlloader into its associated lt_dlvtable. (lt_dlloader_add): Removed unused data parameter. The caller data belongs to (and is set by) the loader itself, not the loader's client. Changed all callers. (lt_dlloader_name, lt_dlloader_data): Removed. Use lt_dlloader_get instead! * libltdl/lt__private.h: Include slist.h. (lt__alloc_die_callback): Add missing LT_SCOPE to declaration. (lt_dlhandle_struct): Use lt_dlvtable instead of opaque lt_dlloader. * libltdl/ltdl.c (lt_dlexit): Rewritten for the new loader API. (loaders, lt_dlloader_add, lt_dlloader_remove, lt_dlloader_next, lt_dlloader_find): Moved from here... * libltdl/lt_dlloader.c ((loaders, lt_dlloader_add, lt_dlloader_remove, lt_dlloader_next, lt_dlloader_find): ...to here. And rewritten in terms of new SList interface. * libltdl/ltdl.c (lt_dlexit, tryall_dlopen): Rewritten in terms of new lt_dlloader interface. * libltdl/Makefile.am (libdlloader_la_SOURCES): Add slist.h and slist.c. Move lt_dlloader.h from here... (pkginclude_HEADERS): ...to here. (libltdl_la_SOURCES): Add lt_dlloader.c and lt_dlloader.h.
2004-07-15 20:33:20 +08:00
if (vtable && !vtable->name)
This pervasive changeset makes two intertwined deep changes to the operation of libtool (neither would work alone). First, there is a new feature that allows libraries to preopen modules. This entails a backwards incompatible change to the libltdl API for separating out the preloaded symbol lists by owner. Second, in the tradition of "eating our own dogfood", libltdl now preloads its own dlloaders. The internal API for dlloaders has also had to change in a backwards incompatible way in support of the new library preloading feature. If you don't use preloaded libraries, you needn't change your project sources, though you will need to recompile against the new libltdl. The API changes are mostly confined to dlloaders, so you probably needn't worry about those (unless you have written a custom loader that you want libltdl to use): * configure.ac (AC_CONFIG_FILES): Add libltdl/loaders/Makefile. * libltdl/configure.ac (AC_CONFIG_FILES): Add loaders/Makefile. * libltdl/loaders: New directory for module loaders, to simplify Makefile rules, and to give the loaders themselves names that are unique in the first few characters. * libtoolize.in (func_copy_all_files): Copy recursively to pick up the loaders directory contents. * libltdl/loaders/Makefile.am: New file. Move module building rules to here... * libltdl/Makefile.am: ...from here. (VERSION_INFO): Bumped version info to signify interface changes. (libltdl_la_CPPFLAGS, libltdlc_la_CPPFLAGS): Set LTDLOPEN appropriately for each library. * libltdl/loader-dld_link.c, libltdl/loader-dlopen.c, libltdl/loader-dyld.c, libltdl/loader-load_add_on.c, libltdl/loader-loadlibrary.c libltdl/loader-preopen.c, libltdl/loader-shl_load.c: Moved from here... * libltdl/loaders/dld_link.c, libltdl/loaders/dlopen.c, libltdl/loaders/dyld.c, libltdl/loaders/load_add_on.c, libltdl/loaders/loadlibrary.c libltdl/loaders/preopen.c, libltdl/loaders/shl_load.c: ...to here. (get_vtable): New entry function for each. * libltdl/loaders/preopen.c (lt_dlsymlists_t): Replaced by... (symlist_chain): ...a new structure which maps lists of preloaded symbols from the object that loads them. (lt_dlpreload_open): New function to automatically open all preloaded modules belonging to a named object (ORIGINATOR). * libltdl/lt__alloc.c (lt__zalloc): New function to return a block of zeroed out new memory. * libltdl/lt__alloc.h (lt__zalloc): Prototype it. * libltdl/lt__private.h (lt__alloc_die_callback): Add missing prototype. (lt__error_strings): Make this opaque to callers. * libltdl/lt_error.c (lt__error_strings): Move the implementation to here. * libltdl/lt_dlloader.h (lt_user_dlloader): Add extra fields to make originator focused preloading possible. *BREAKS BACKWARDS COMPATIBILITY* (lt_dlloader_add): Take advantage of new fields to simplify paramater list. * libltdl/lt_system.h (LT_STR): New ANSI stringification macro. (LT_CONC): Fix it to work from within macros. * libltdl/ltdl.c (loader_init, loader_init_callback): Simplify dlloader loading. (get_vtable, preloaded_symbols): Point these at the preopen.c symbols to bootstrap the loader chain. (lt_dlinit): Load the preopen dlloader manually, and then use it to load any other preloaded dlloaders. (lt_dlloader_add): Simplify parameter list. Populate new fields. Chain new loaders according to priority field. * libltdl/ltdl.h (lt_dlsymlist): Add a new originator field. (lt_dlpreload_callback_func): Type of a callback for automatic lt_dlpreload_open loading. (LTDL_SET_PRELOADED_SYMBOLS): Adjust to hook into preloaded symbols from the "@PROGRAM@" originator. * tests/demo/dlmain.c (main): Use mangled preloaded_symbols symbol. * tests/pdemo/longer_file_name_dlmain.c (main): Ditto. * ltmain.in: Don't spew spurious warnings when dlopening and dlpreopening modules. (func_generate_dlsyms): Factored out from multiple copies in the rest of the code. Generate originator keyed symbol lists. (func_extract_archives): Also factored. Extract the contents of convenience archives for linking with dependent libraries when --whole-archive is not available. [darwin]: Don't try to link $old_library unless it exists, and $lib is a bundle. * m4/ltdl.m4 (AC_LTDL_DLLIB): Check for all possible dynamic loading libraries/apis rather that stopping when an acceptable one is discovered. (LT_DLLOADERS): New variable for holding dlloaders that can be preloaded. * doc/libtool.texi: Document interface changes. * NEWS: Updated.
2004-07-15 20:14:48 +08:00
{
vtable->name = "lt_preopen";
vtable->sym_prefix = 0;
vtable->module_open = vm_open;
vtable->module_close = vm_close;
vtable->find_sym = vm_sym;
Split lt_dlloader management into a separate file, and factor `loaders' list management into a new SList ADT. In the process, the API for writing loaders is a little cleaner, so all the existing loaders were tweaked to take advantage of that: * libltdl/slist.h, libltdl/slist.c: New files implementing a generic singly linked list container ADT. The ADT is purely internal, and none of its API's are visible from an installed libltdl. * libltdl/lt_dlloader.h (lt_dlloader): Removed next field again :-) Renamed to lt_dlvtable for API. Changed all callers. (lt_dlloader_get): New function to turn an lt_dlloader into its associated lt_dlvtable. (lt_dlloader_add): Removed unused data parameter. The caller data belongs to (and is set by) the loader itself, not the loader's client. Changed all callers. (lt_dlloader_name, lt_dlloader_data): Removed. Use lt_dlloader_get instead! * libltdl/lt__private.h: Include slist.h. (lt__alloc_die_callback): Add missing LT_SCOPE to declaration. (lt_dlhandle_struct): Use lt_dlvtable instead of opaque lt_dlloader. * libltdl/ltdl.c (lt_dlexit): Rewritten for the new loader API. (loaders, lt_dlloader_add, lt_dlloader_remove, lt_dlloader_next, lt_dlloader_find): Moved from here... * libltdl/lt_dlloader.c ((loaders, lt_dlloader_add, lt_dlloader_remove, lt_dlloader_next, lt_dlloader_find): ...to here. And rewritten in terms of new SList interface. * libltdl/ltdl.c (lt_dlexit, tryall_dlopen): Rewritten in terms of new lt_dlloader interface. * libltdl/Makefile.am (libdlloader_la_SOURCES): Add slist.h and slist.c. Move lt_dlloader.h from here... (pkginclude_HEADERS): ...to here. (libltdl_la_SOURCES): Add lt_dlloader.c and lt_dlloader.h.
2004-07-15 20:33:20 +08:00
vtable->dlloader_init = vl_init;
vtable->dlloader_exit = vl_exit;
This pervasive changeset makes two intertwined deep changes to the operation of libtool (neither would work alone). First, there is a new feature that allows libraries to preopen modules. This entails a backwards incompatible change to the libltdl API for separating out the preloaded symbol lists by owner. Second, in the tradition of "eating our own dogfood", libltdl now preloads its own dlloaders. The internal API for dlloaders has also had to change in a backwards incompatible way in support of the new library preloading feature. If you don't use preloaded libraries, you needn't change your project sources, though you will need to recompile against the new libltdl. The API changes are mostly confined to dlloaders, so you probably needn't worry about those (unless you have written a custom loader that you want libltdl to use): * configure.ac (AC_CONFIG_FILES): Add libltdl/loaders/Makefile. * libltdl/configure.ac (AC_CONFIG_FILES): Add loaders/Makefile. * libltdl/loaders: New directory for module loaders, to simplify Makefile rules, and to give the loaders themselves names that are unique in the first few characters. * libtoolize.in (func_copy_all_files): Copy recursively to pick up the loaders directory contents. * libltdl/loaders/Makefile.am: New file. Move module building rules to here... * libltdl/Makefile.am: ...from here. (VERSION_INFO): Bumped version info to signify interface changes. (libltdl_la_CPPFLAGS, libltdlc_la_CPPFLAGS): Set LTDLOPEN appropriately for each library. * libltdl/loader-dld_link.c, libltdl/loader-dlopen.c, libltdl/loader-dyld.c, libltdl/loader-load_add_on.c, libltdl/loader-loadlibrary.c libltdl/loader-preopen.c, libltdl/loader-shl_load.c: Moved from here... * libltdl/loaders/dld_link.c, libltdl/loaders/dlopen.c, libltdl/loaders/dyld.c, libltdl/loaders/load_add_on.c, libltdl/loaders/loadlibrary.c libltdl/loaders/preopen.c, libltdl/loaders/shl_load.c: ...to here. (get_vtable): New entry function for each. * libltdl/loaders/preopen.c (lt_dlsymlists_t): Replaced by... (symlist_chain): ...a new structure which maps lists of preloaded symbols from the object that loads them. (lt_dlpreload_open): New function to automatically open all preloaded modules belonging to a named object (ORIGINATOR). * libltdl/lt__alloc.c (lt__zalloc): New function to return a block of zeroed out new memory. * libltdl/lt__alloc.h (lt__zalloc): Prototype it. * libltdl/lt__private.h (lt__alloc_die_callback): Add missing prototype. (lt__error_strings): Make this opaque to callers. * libltdl/lt_error.c (lt__error_strings): Move the implementation to here. * libltdl/lt_dlloader.h (lt_user_dlloader): Add extra fields to make originator focused preloading possible. *BREAKS BACKWARDS COMPATIBILITY* (lt_dlloader_add): Take advantage of new fields to simplify paramater list. * libltdl/lt_system.h (LT_STR): New ANSI stringification macro. (LT_CONC): Fix it to work from within macros. * libltdl/ltdl.c (loader_init, loader_init_callback): Simplify dlloader loading. (get_vtable, preloaded_symbols): Point these at the preopen.c symbols to bootstrap the loader chain. (lt_dlinit): Load the preopen dlloader manually, and then use it to load any other preloaded dlloaders. (lt_dlloader_add): Simplify parameter list. Populate new fields. Chain new loaders according to priority field. * libltdl/ltdl.h (lt_dlsymlist): Add a new originator field. (lt_dlpreload_callback_func): Type of a callback for automatic lt_dlpreload_open loading. (LTDL_SET_PRELOADED_SYMBOLS): Adjust to hook into preloaded symbols from the "@PROGRAM@" originator. * tests/demo/dlmain.c (main): Use mangled preloaded_symbols symbol. * tests/pdemo/longer_file_name_dlmain.c (main): Ditto. * ltmain.in: Don't spew spurious warnings when dlopening and dlpreopening modules. (func_generate_dlsyms): Factored out from multiple copies in the rest of the code. Generate originator keyed symbol lists. (func_extract_archives): Also factored. Extract the contents of convenience archives for linking with dependent libraries when --whole-archive is not available. [darwin]: Don't try to link $old_library unless it exists, and $lib is a bundle. * m4/ltdl.m4 (AC_LTDL_DLLIB): Check for all possible dynamic loading libraries/apis rather that stopping when an acceptable one is discovered. (LT_DLLOADERS): New variable for holding dlloaders that can be preloaded. * doc/libtool.texi: Document interface changes. * NEWS: Updated.
2004-07-15 20:14:48 +08:00
vtable->dlloader_data = loader_data;
vtable->priority = LT_DLLOADER_PREPEND;
}
Split lt_dlloader management into a separate file, and factor `loaders' list management into a new SList ADT. In the process, the API for writing loaders is a little cleaner, so all the existing loaders were tweaked to take advantage of that: * libltdl/slist.h, libltdl/slist.c: New files implementing a generic singly linked list container ADT. The ADT is purely internal, and none of its API's are visible from an installed libltdl. * libltdl/lt_dlloader.h (lt_dlloader): Removed next field again :-) Renamed to lt_dlvtable for API. Changed all callers. (lt_dlloader_get): New function to turn an lt_dlloader into its associated lt_dlvtable. (lt_dlloader_add): Removed unused data parameter. The caller data belongs to (and is set by) the loader itself, not the loader's client. Changed all callers. (lt_dlloader_name, lt_dlloader_data): Removed. Use lt_dlloader_get instead! * libltdl/lt__private.h: Include slist.h. (lt__alloc_die_callback): Add missing LT_SCOPE to declaration. (lt_dlhandle_struct): Use lt_dlvtable instead of opaque lt_dlloader. * libltdl/ltdl.c (lt_dlexit): Rewritten for the new loader API. (loaders, lt_dlloader_add, lt_dlloader_remove, lt_dlloader_next, lt_dlloader_find): Moved from here... * libltdl/lt_dlloader.c ((loaders, lt_dlloader_add, lt_dlloader_remove, lt_dlloader_next, lt_dlloader_find): ...to here. And rewritten in terms of new SList interface. * libltdl/ltdl.c (lt_dlexit, tryall_dlopen): Rewritten in terms of new lt_dlloader interface. * libltdl/Makefile.am (libdlloader_la_SOURCES): Add slist.h and slist.c. Move lt_dlloader.h from here... (pkginclude_HEADERS): ...to here. (libltdl_la_SOURCES): Add lt_dlloader.c and lt_dlloader.h.
2004-07-15 20:33:20 +08:00
if (vtable && (vtable->dlloader_data != loader_data))
This pervasive changeset makes two intertwined deep changes to the operation of libtool (neither would work alone). First, there is a new feature that allows libraries to preopen modules. This entails a backwards incompatible change to the libltdl API for separating out the preloaded symbol lists by owner. Second, in the tradition of "eating our own dogfood", libltdl now preloads its own dlloaders. The internal API for dlloaders has also had to change in a backwards incompatible way in support of the new library preloading feature. If you don't use preloaded libraries, you needn't change your project sources, though you will need to recompile against the new libltdl. The API changes are mostly confined to dlloaders, so you probably needn't worry about those (unless you have written a custom loader that you want libltdl to use): * configure.ac (AC_CONFIG_FILES): Add libltdl/loaders/Makefile. * libltdl/configure.ac (AC_CONFIG_FILES): Add loaders/Makefile. * libltdl/loaders: New directory for module loaders, to simplify Makefile rules, and to give the loaders themselves names that are unique in the first few characters. * libtoolize.in (func_copy_all_files): Copy recursively to pick up the loaders directory contents. * libltdl/loaders/Makefile.am: New file. Move module building rules to here... * libltdl/Makefile.am: ...from here. (VERSION_INFO): Bumped version info to signify interface changes. (libltdl_la_CPPFLAGS, libltdlc_la_CPPFLAGS): Set LTDLOPEN appropriately for each library. * libltdl/loader-dld_link.c, libltdl/loader-dlopen.c, libltdl/loader-dyld.c, libltdl/loader-load_add_on.c, libltdl/loader-loadlibrary.c libltdl/loader-preopen.c, libltdl/loader-shl_load.c: Moved from here... * libltdl/loaders/dld_link.c, libltdl/loaders/dlopen.c, libltdl/loaders/dyld.c, libltdl/loaders/load_add_on.c, libltdl/loaders/loadlibrary.c libltdl/loaders/preopen.c, libltdl/loaders/shl_load.c: ...to here. (get_vtable): New entry function for each. * libltdl/loaders/preopen.c (lt_dlsymlists_t): Replaced by... (symlist_chain): ...a new structure which maps lists of preloaded symbols from the object that loads them. (lt_dlpreload_open): New function to automatically open all preloaded modules belonging to a named object (ORIGINATOR). * libltdl/lt__alloc.c (lt__zalloc): New function to return a block of zeroed out new memory. * libltdl/lt__alloc.h (lt__zalloc): Prototype it. * libltdl/lt__private.h (lt__alloc_die_callback): Add missing prototype. (lt__error_strings): Make this opaque to callers. * libltdl/lt_error.c (lt__error_strings): Move the implementation to here. * libltdl/lt_dlloader.h (lt_user_dlloader): Add extra fields to make originator focused preloading possible. *BREAKS BACKWARDS COMPATIBILITY* (lt_dlloader_add): Take advantage of new fields to simplify paramater list. * libltdl/lt_system.h (LT_STR): New ANSI stringification macro. (LT_CONC): Fix it to work from within macros. * libltdl/ltdl.c (loader_init, loader_init_callback): Simplify dlloader loading. (get_vtable, preloaded_symbols): Point these at the preopen.c symbols to bootstrap the loader chain. (lt_dlinit): Load the preopen dlloader manually, and then use it to load any other preloaded dlloaders. (lt_dlloader_add): Simplify parameter list. Populate new fields. Chain new loaders according to priority field. * libltdl/ltdl.h (lt_dlsymlist): Add a new originator field. (lt_dlpreload_callback_func): Type of a callback for automatic lt_dlpreload_open loading. (LTDL_SET_PRELOADED_SYMBOLS): Adjust to hook into preloaded symbols from the "@PROGRAM@" originator. * tests/demo/dlmain.c (main): Use mangled preloaded_symbols symbol. * tests/pdemo/longer_file_name_dlmain.c (main): Ditto. * ltmain.in: Don't spew spurious warnings when dlopening and dlpreopening modules. (func_generate_dlsyms): Factored out from multiple copies in the rest of the code. Generate originator keyed symbol lists. (func_extract_archives): Also factored. Extract the contents of convenience archives for linking with dependent libraries when --whole-archive is not available. [darwin]: Don't try to link $old_library unless it exists, and $lib is a bundle. * m4/ltdl.m4 (AC_LTDL_DLLIB): Check for all possible dynamic loading libraries/apis rather that stopping when an acceptable one is discovered. (LT_DLLOADERS): New variable for holding dlloaders that can be preloaded. * doc/libtool.texi: Document interface changes. * NEWS: Updated.
2004-07-15 20:14:48 +08:00
{
LT__SETERROR (INIT_LOADER);
return 0;
}
return vtable;
}
/* --- IMPLEMENTATION --- */
/* Wrapper type to chain together symbol lists of various origins. */
typedef struct symlist_chain
{
struct symlist_chain *next;
const lt_dlsymlist *symlist;
} symlist_chain;
static int add_symlist (const lt_dlsymlist *symlist);
static int free_symlists (void);
/* The start of the symbol lists chain. */
static symlist_chain *preloaded_symlists = 0;
/* A symbol list preloaded before lt_init() was called. */
static const lt_dlsymlist *default_preloaded_symbols = 0;
/* A function called through the vtable to initialise this loader. */
static int
vl_init (lt_user_data LT__UNUSED loader_data)
This pervasive changeset makes two intertwined deep changes to the operation of libtool (neither would work alone). First, there is a new feature that allows libraries to preopen modules. This entails a backwards incompatible change to the libltdl API for separating out the preloaded symbol lists by owner. Second, in the tradition of "eating our own dogfood", libltdl now preloads its own dlloaders. The internal API for dlloaders has also had to change in a backwards incompatible way in support of the new library preloading feature. If you don't use preloaded libraries, you needn't change your project sources, though you will need to recompile against the new libltdl. The API changes are mostly confined to dlloaders, so you probably needn't worry about those (unless you have written a custom loader that you want libltdl to use): * configure.ac (AC_CONFIG_FILES): Add libltdl/loaders/Makefile. * libltdl/configure.ac (AC_CONFIG_FILES): Add loaders/Makefile. * libltdl/loaders: New directory for module loaders, to simplify Makefile rules, and to give the loaders themselves names that are unique in the first few characters. * libtoolize.in (func_copy_all_files): Copy recursively to pick up the loaders directory contents. * libltdl/loaders/Makefile.am: New file. Move module building rules to here... * libltdl/Makefile.am: ...from here. (VERSION_INFO): Bumped version info to signify interface changes. (libltdl_la_CPPFLAGS, libltdlc_la_CPPFLAGS): Set LTDLOPEN appropriately for each library. * libltdl/loader-dld_link.c, libltdl/loader-dlopen.c, libltdl/loader-dyld.c, libltdl/loader-load_add_on.c, libltdl/loader-loadlibrary.c libltdl/loader-preopen.c, libltdl/loader-shl_load.c: Moved from here... * libltdl/loaders/dld_link.c, libltdl/loaders/dlopen.c, libltdl/loaders/dyld.c, libltdl/loaders/load_add_on.c, libltdl/loaders/loadlibrary.c libltdl/loaders/preopen.c, libltdl/loaders/shl_load.c: ...to here. (get_vtable): New entry function for each. * libltdl/loaders/preopen.c (lt_dlsymlists_t): Replaced by... (symlist_chain): ...a new structure which maps lists of preloaded symbols from the object that loads them. (lt_dlpreload_open): New function to automatically open all preloaded modules belonging to a named object (ORIGINATOR). * libltdl/lt__alloc.c (lt__zalloc): New function to return a block of zeroed out new memory. * libltdl/lt__alloc.h (lt__zalloc): Prototype it. * libltdl/lt__private.h (lt__alloc_die_callback): Add missing prototype. (lt__error_strings): Make this opaque to callers. * libltdl/lt_error.c (lt__error_strings): Move the implementation to here. * libltdl/lt_dlloader.h (lt_user_dlloader): Add extra fields to make originator focused preloading possible. *BREAKS BACKWARDS COMPATIBILITY* (lt_dlloader_add): Take advantage of new fields to simplify paramater list. * libltdl/lt_system.h (LT_STR): New ANSI stringification macro. (LT_CONC): Fix it to work from within macros. * libltdl/ltdl.c (loader_init, loader_init_callback): Simplify dlloader loading. (get_vtable, preloaded_symbols): Point these at the preopen.c symbols to bootstrap the loader chain. (lt_dlinit): Load the preopen dlloader manually, and then use it to load any other preloaded dlloaders. (lt_dlloader_add): Simplify parameter list. Populate new fields. Chain new loaders according to priority field. * libltdl/ltdl.h (lt_dlsymlist): Add a new originator field. (lt_dlpreload_callback_func): Type of a callback for automatic lt_dlpreload_open loading. (LTDL_SET_PRELOADED_SYMBOLS): Adjust to hook into preloaded symbols from the "@PROGRAM@" originator. * tests/demo/dlmain.c (main): Use mangled preloaded_symbols symbol. * tests/pdemo/longer_file_name_dlmain.c (main): Ditto. * ltmain.in: Don't spew spurious warnings when dlopening and dlpreopening modules. (func_generate_dlsyms): Factored out from multiple copies in the rest of the code. Generate originator keyed symbol lists. (func_extract_archives): Also factored. Extract the contents of convenience archives for linking with dependent libraries when --whole-archive is not available. [darwin]: Don't try to link $old_library unless it exists, and $lib is a bundle. * m4/ltdl.m4 (AC_LTDL_DLLIB): Check for all possible dynamic loading libraries/apis rather that stopping when an acceptable one is discovered. (LT_DLLOADERS): New variable for holding dlloaders that can be preloaded. * doc/libtool.texi: Document interface changes. * NEWS: Updated.
2004-07-15 20:14:48 +08:00
{
int errors = 0;
preloaded_symlists = 0;
if (default_preloaded_symbols)
{
errors = lt_dlpreload (default_preloaded_symbols);
}
return errors;
}
/* A function called through the vtable when this loader is no
longer needed by the application. */
static int
vl_exit (lt_user_data LT__UNUSED loader_data)
This pervasive changeset makes two intertwined deep changes to the operation of libtool (neither would work alone). First, there is a new feature that allows libraries to preopen modules. This entails a backwards incompatible change to the libltdl API for separating out the preloaded symbol lists by owner. Second, in the tradition of "eating our own dogfood", libltdl now preloads its own dlloaders. The internal API for dlloaders has also had to change in a backwards incompatible way in support of the new library preloading feature. If you don't use preloaded libraries, you needn't change your project sources, though you will need to recompile against the new libltdl. The API changes are mostly confined to dlloaders, so you probably needn't worry about those (unless you have written a custom loader that you want libltdl to use): * configure.ac (AC_CONFIG_FILES): Add libltdl/loaders/Makefile. * libltdl/configure.ac (AC_CONFIG_FILES): Add loaders/Makefile. * libltdl/loaders: New directory for module loaders, to simplify Makefile rules, and to give the loaders themselves names that are unique in the first few characters. * libtoolize.in (func_copy_all_files): Copy recursively to pick up the loaders directory contents. * libltdl/loaders/Makefile.am: New file. Move module building rules to here... * libltdl/Makefile.am: ...from here. (VERSION_INFO): Bumped version info to signify interface changes. (libltdl_la_CPPFLAGS, libltdlc_la_CPPFLAGS): Set LTDLOPEN appropriately for each library. * libltdl/loader-dld_link.c, libltdl/loader-dlopen.c, libltdl/loader-dyld.c, libltdl/loader-load_add_on.c, libltdl/loader-loadlibrary.c libltdl/loader-preopen.c, libltdl/loader-shl_load.c: Moved from here... * libltdl/loaders/dld_link.c, libltdl/loaders/dlopen.c, libltdl/loaders/dyld.c, libltdl/loaders/load_add_on.c, libltdl/loaders/loadlibrary.c libltdl/loaders/preopen.c, libltdl/loaders/shl_load.c: ...to here. (get_vtable): New entry function for each. * libltdl/loaders/preopen.c (lt_dlsymlists_t): Replaced by... (symlist_chain): ...a new structure which maps lists of preloaded symbols from the object that loads them. (lt_dlpreload_open): New function to automatically open all preloaded modules belonging to a named object (ORIGINATOR). * libltdl/lt__alloc.c (lt__zalloc): New function to return a block of zeroed out new memory. * libltdl/lt__alloc.h (lt__zalloc): Prototype it. * libltdl/lt__private.h (lt__alloc_die_callback): Add missing prototype. (lt__error_strings): Make this opaque to callers. * libltdl/lt_error.c (lt__error_strings): Move the implementation to here. * libltdl/lt_dlloader.h (lt_user_dlloader): Add extra fields to make originator focused preloading possible. *BREAKS BACKWARDS COMPATIBILITY* (lt_dlloader_add): Take advantage of new fields to simplify paramater list. * libltdl/lt_system.h (LT_STR): New ANSI stringification macro. (LT_CONC): Fix it to work from within macros. * libltdl/ltdl.c (loader_init, loader_init_callback): Simplify dlloader loading. (get_vtable, preloaded_symbols): Point these at the preopen.c symbols to bootstrap the loader chain. (lt_dlinit): Load the preopen dlloader manually, and then use it to load any other preloaded dlloaders. (lt_dlloader_add): Simplify parameter list. Populate new fields. Chain new loaders according to priority field. * libltdl/ltdl.h (lt_dlsymlist): Add a new originator field. (lt_dlpreload_callback_func): Type of a callback for automatic lt_dlpreload_open loading. (LTDL_SET_PRELOADED_SYMBOLS): Adjust to hook into preloaded symbols from the "@PROGRAM@" originator. * tests/demo/dlmain.c (main): Use mangled preloaded_symbols symbol. * tests/pdemo/longer_file_name_dlmain.c (main): Ditto. * ltmain.in: Don't spew spurious warnings when dlopening and dlpreopening modules. (func_generate_dlsyms): Factored out from multiple copies in the rest of the code. Generate originator keyed symbol lists. (func_extract_archives): Also factored. Extract the contents of convenience archives for linking with dependent libraries when --whole-archive is not available. [darwin]: Don't try to link $old_library unless it exists, and $lib is a bundle. * m4/ltdl.m4 (AC_LTDL_DLLIB): Check for all possible dynamic loading libraries/apis rather that stopping when an acceptable one is discovered. (LT_DLLOADERS): New variable for holding dlloaders that can be preloaded. * doc/libtool.texi: Document interface changes. * NEWS: Updated.
2004-07-15 20:14:48 +08:00
{
free_symlists ();
return 0;
}
/* A function called through the vtable to open a module with this
loader. Returns an opaque representation of the newly opened
module for processing with this loader's other vtable functions. */
static lt_module
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 22:38:50 +08:00
vm_open (lt_user_data LT__UNUSED loader_data, const char *filename,
lt_dladvise LT__UNUSED advise)
This pervasive changeset makes two intertwined deep changes to the operation of libtool (neither would work alone). First, there is a new feature that allows libraries to preopen modules. This entails a backwards incompatible change to the libltdl API for separating out the preloaded symbol lists by owner. Second, in the tradition of "eating our own dogfood", libltdl now preloads its own dlloaders. The internal API for dlloaders has also had to change in a backwards incompatible way in support of the new library preloading feature. If you don't use preloaded libraries, you needn't change your project sources, though you will need to recompile against the new libltdl. The API changes are mostly confined to dlloaders, so you probably needn't worry about those (unless you have written a custom loader that you want libltdl to use): * configure.ac (AC_CONFIG_FILES): Add libltdl/loaders/Makefile. * libltdl/configure.ac (AC_CONFIG_FILES): Add loaders/Makefile. * libltdl/loaders: New directory for module loaders, to simplify Makefile rules, and to give the loaders themselves names that are unique in the first few characters. * libtoolize.in (func_copy_all_files): Copy recursively to pick up the loaders directory contents. * libltdl/loaders/Makefile.am: New file. Move module building rules to here... * libltdl/Makefile.am: ...from here. (VERSION_INFO): Bumped version info to signify interface changes. (libltdl_la_CPPFLAGS, libltdlc_la_CPPFLAGS): Set LTDLOPEN appropriately for each library. * libltdl/loader-dld_link.c, libltdl/loader-dlopen.c, libltdl/loader-dyld.c, libltdl/loader-load_add_on.c, libltdl/loader-loadlibrary.c libltdl/loader-preopen.c, libltdl/loader-shl_load.c: Moved from here... * libltdl/loaders/dld_link.c, libltdl/loaders/dlopen.c, libltdl/loaders/dyld.c, libltdl/loaders/load_add_on.c, libltdl/loaders/loadlibrary.c libltdl/loaders/preopen.c, libltdl/loaders/shl_load.c: ...to here. (get_vtable): New entry function for each. * libltdl/loaders/preopen.c (lt_dlsymlists_t): Replaced by... (symlist_chain): ...a new structure which maps lists of preloaded symbols from the object that loads them. (lt_dlpreload_open): New function to automatically open all preloaded modules belonging to a named object (ORIGINATOR). * libltdl/lt__alloc.c (lt__zalloc): New function to return a block of zeroed out new memory. * libltdl/lt__alloc.h (lt__zalloc): Prototype it. * libltdl/lt__private.h (lt__alloc_die_callback): Add missing prototype. (lt__error_strings): Make this opaque to callers. * libltdl/lt_error.c (lt__error_strings): Move the implementation to here. * libltdl/lt_dlloader.h (lt_user_dlloader): Add extra fields to make originator focused preloading possible. *BREAKS BACKWARDS COMPATIBILITY* (lt_dlloader_add): Take advantage of new fields to simplify paramater list. * libltdl/lt_system.h (LT_STR): New ANSI stringification macro. (LT_CONC): Fix it to work from within macros. * libltdl/ltdl.c (loader_init, loader_init_callback): Simplify dlloader loading. (get_vtable, preloaded_symbols): Point these at the preopen.c symbols to bootstrap the loader chain. (lt_dlinit): Load the preopen dlloader manually, and then use it to load any other preloaded dlloaders. (lt_dlloader_add): Simplify parameter list. Populate new fields. Chain new loaders according to priority field. * libltdl/ltdl.h (lt_dlsymlist): Add a new originator field. (lt_dlpreload_callback_func): Type of a callback for automatic lt_dlpreload_open loading. (LTDL_SET_PRELOADED_SYMBOLS): Adjust to hook into preloaded symbols from the "@PROGRAM@" originator. * tests/demo/dlmain.c (main): Use mangled preloaded_symbols symbol. * tests/pdemo/longer_file_name_dlmain.c (main): Ditto. * ltmain.in: Don't spew spurious warnings when dlopening and dlpreopening modules. (func_generate_dlsyms): Factored out from multiple copies in the rest of the code. Generate originator keyed symbol lists. (func_extract_archives): Also factored. Extract the contents of convenience archives for linking with dependent libraries when --whole-archive is not available. [darwin]: Don't try to link $old_library unless it exists, and $lib is a bundle. * m4/ltdl.m4 (AC_LTDL_DLLIB): Check for all possible dynamic loading libraries/apis rather that stopping when an acceptable one is discovered. (LT_DLLOADERS): New variable for holding dlloaders that can be preloaded. * doc/libtool.texi: Document interface changes. * NEWS: Updated.
2004-07-15 20:14:48 +08:00
{
symlist_chain *lists;
lt_module module = 0;
if (!preloaded_symlists)
{
LT__SETERROR (NO_SYMBOLS);
goto done;
}
/* Can't use NULL as the reflective symbol header, as NULL is
used to mark the end of the entire symbol list. Self-dlpreopened
symbols follow this magic number, chosen to be an unlikely
clash with a real module name. */
if (!filename)
{
filename = "@PROGRAM@";
}
for (lists = preloaded_symlists; lists; lists = lists->next)
{
const lt_dlsymlist *symbol;
for (symbol= lists->symlist; symbol->name; ++symbol)
This pervasive changeset makes two intertwined deep changes to the operation of libtool (neither would work alone). First, there is a new feature that allows libraries to preopen modules. This entails a backwards incompatible change to the libltdl API for separating out the preloaded symbol lists by owner. Second, in the tradition of "eating our own dogfood", libltdl now preloads its own dlloaders. The internal API for dlloaders has also had to change in a backwards incompatible way in support of the new library preloading feature. If you don't use preloaded libraries, you needn't change your project sources, though you will need to recompile against the new libltdl. The API changes are mostly confined to dlloaders, so you probably needn't worry about those (unless you have written a custom loader that you want libltdl to use): * configure.ac (AC_CONFIG_FILES): Add libltdl/loaders/Makefile. * libltdl/configure.ac (AC_CONFIG_FILES): Add loaders/Makefile. * libltdl/loaders: New directory for module loaders, to simplify Makefile rules, and to give the loaders themselves names that are unique in the first few characters. * libtoolize.in (func_copy_all_files): Copy recursively to pick up the loaders directory contents. * libltdl/loaders/Makefile.am: New file. Move module building rules to here... * libltdl/Makefile.am: ...from here. (VERSION_INFO): Bumped version info to signify interface changes. (libltdl_la_CPPFLAGS, libltdlc_la_CPPFLAGS): Set LTDLOPEN appropriately for each library. * libltdl/loader-dld_link.c, libltdl/loader-dlopen.c, libltdl/loader-dyld.c, libltdl/loader-load_add_on.c, libltdl/loader-loadlibrary.c libltdl/loader-preopen.c, libltdl/loader-shl_load.c: Moved from here... * libltdl/loaders/dld_link.c, libltdl/loaders/dlopen.c, libltdl/loaders/dyld.c, libltdl/loaders/load_add_on.c, libltdl/loaders/loadlibrary.c libltdl/loaders/preopen.c, libltdl/loaders/shl_load.c: ...to here. (get_vtable): New entry function for each. * libltdl/loaders/preopen.c (lt_dlsymlists_t): Replaced by... (symlist_chain): ...a new structure which maps lists of preloaded symbols from the object that loads them. (lt_dlpreload_open): New function to automatically open all preloaded modules belonging to a named object (ORIGINATOR). * libltdl/lt__alloc.c (lt__zalloc): New function to return a block of zeroed out new memory. * libltdl/lt__alloc.h (lt__zalloc): Prototype it. * libltdl/lt__private.h (lt__alloc_die_callback): Add missing prototype. (lt__error_strings): Make this opaque to callers. * libltdl/lt_error.c (lt__error_strings): Move the implementation to here. * libltdl/lt_dlloader.h (lt_user_dlloader): Add extra fields to make originator focused preloading possible. *BREAKS BACKWARDS COMPATIBILITY* (lt_dlloader_add): Take advantage of new fields to simplify paramater list. * libltdl/lt_system.h (LT_STR): New ANSI stringification macro. (LT_CONC): Fix it to work from within macros. * libltdl/ltdl.c (loader_init, loader_init_callback): Simplify dlloader loading. (get_vtable, preloaded_symbols): Point these at the preopen.c symbols to bootstrap the loader chain. (lt_dlinit): Load the preopen dlloader manually, and then use it to load any other preloaded dlloaders. (lt_dlloader_add): Simplify parameter list. Populate new fields. Chain new loaders according to priority field. * libltdl/ltdl.h (lt_dlsymlist): Add a new originator field. (lt_dlpreload_callback_func): Type of a callback for automatic lt_dlpreload_open loading. (LTDL_SET_PRELOADED_SYMBOLS): Adjust to hook into preloaded symbols from the "@PROGRAM@" originator. * tests/demo/dlmain.c (main): Use mangled preloaded_symbols symbol. * tests/pdemo/longer_file_name_dlmain.c (main): Ditto. * ltmain.in: Don't spew spurious warnings when dlopening and dlpreopening modules. (func_generate_dlsyms): Factored out from multiple copies in the rest of the code. Generate originator keyed symbol lists. (func_extract_archives): Also factored. Extract the contents of convenience archives for linking with dependent libraries when --whole-archive is not available. [darwin]: Don't try to link $old_library unless it exists, and $lib is a bundle. * m4/ltdl.m4 (AC_LTDL_DLLIB): Check for all possible dynamic loading libraries/apis rather that stopping when an acceptable one is discovered. (LT_DLLOADERS): New variable for holding dlloaders that can be preloaded. * doc/libtool.texi: Document interface changes. * NEWS: Updated.
2004-07-15 20:14:48 +08:00
{
if (!symbol->address && streq (symbol->name, filename))
This pervasive changeset makes two intertwined deep changes to the operation of libtool (neither would work alone). First, there is a new feature that allows libraries to preopen modules. This entails a backwards incompatible change to the libltdl API for separating out the preloaded symbol lists by owner. Second, in the tradition of "eating our own dogfood", libltdl now preloads its own dlloaders. The internal API for dlloaders has also had to change in a backwards incompatible way in support of the new library preloading feature. If you don't use preloaded libraries, you needn't change your project sources, though you will need to recompile against the new libltdl. The API changes are mostly confined to dlloaders, so you probably needn't worry about those (unless you have written a custom loader that you want libltdl to use): * configure.ac (AC_CONFIG_FILES): Add libltdl/loaders/Makefile. * libltdl/configure.ac (AC_CONFIG_FILES): Add loaders/Makefile. * libltdl/loaders: New directory for module loaders, to simplify Makefile rules, and to give the loaders themselves names that are unique in the first few characters. * libtoolize.in (func_copy_all_files): Copy recursively to pick up the loaders directory contents. * libltdl/loaders/Makefile.am: New file. Move module building rules to here... * libltdl/Makefile.am: ...from here. (VERSION_INFO): Bumped version info to signify interface changes. (libltdl_la_CPPFLAGS, libltdlc_la_CPPFLAGS): Set LTDLOPEN appropriately for each library. * libltdl/loader-dld_link.c, libltdl/loader-dlopen.c, libltdl/loader-dyld.c, libltdl/loader-load_add_on.c, libltdl/loader-loadlibrary.c libltdl/loader-preopen.c, libltdl/loader-shl_load.c: Moved from here... * libltdl/loaders/dld_link.c, libltdl/loaders/dlopen.c, libltdl/loaders/dyld.c, libltdl/loaders/load_add_on.c, libltdl/loaders/loadlibrary.c libltdl/loaders/preopen.c, libltdl/loaders/shl_load.c: ...to here. (get_vtable): New entry function for each. * libltdl/loaders/preopen.c (lt_dlsymlists_t): Replaced by... (symlist_chain): ...a new structure which maps lists of preloaded symbols from the object that loads them. (lt_dlpreload_open): New function to automatically open all preloaded modules belonging to a named object (ORIGINATOR). * libltdl/lt__alloc.c (lt__zalloc): New function to return a block of zeroed out new memory. * libltdl/lt__alloc.h (lt__zalloc): Prototype it. * libltdl/lt__private.h (lt__alloc_die_callback): Add missing prototype. (lt__error_strings): Make this opaque to callers. * libltdl/lt_error.c (lt__error_strings): Move the implementation to here. * libltdl/lt_dlloader.h (lt_user_dlloader): Add extra fields to make originator focused preloading possible. *BREAKS BACKWARDS COMPATIBILITY* (lt_dlloader_add): Take advantage of new fields to simplify paramater list. * libltdl/lt_system.h (LT_STR): New ANSI stringification macro. (LT_CONC): Fix it to work from within macros. * libltdl/ltdl.c (loader_init, loader_init_callback): Simplify dlloader loading. (get_vtable, preloaded_symbols): Point these at the preopen.c symbols to bootstrap the loader chain. (lt_dlinit): Load the preopen dlloader manually, and then use it to load any other preloaded dlloaders. (lt_dlloader_add): Simplify parameter list. Populate new fields. Chain new loaders according to priority field. * libltdl/ltdl.h (lt_dlsymlist): Add a new originator field. (lt_dlpreload_callback_func): Type of a callback for automatic lt_dlpreload_open loading. (LTDL_SET_PRELOADED_SYMBOLS): Adjust to hook into preloaded symbols from the "@PROGRAM@" originator. * tests/demo/dlmain.c (main): Use mangled preloaded_symbols symbol. * tests/pdemo/longer_file_name_dlmain.c (main): Ditto. * ltmain.in: Don't spew spurious warnings when dlopening and dlpreopening modules. (func_generate_dlsyms): Factored out from multiple copies in the rest of the code. Generate originator keyed symbol lists. (func_extract_archives): Also factored. Extract the contents of convenience archives for linking with dependent libraries when --whole-archive is not available. [darwin]: Don't try to link $old_library unless it exists, and $lib is a bundle. * m4/ltdl.m4 (AC_LTDL_DLLIB): Check for all possible dynamic loading libraries/apis rather that stopping when an acceptable one is discovered. (LT_DLLOADERS): New variable for holding dlloaders that can be preloaded. * doc/libtool.texi: Document interface changes. * NEWS: Updated.
2004-07-15 20:14:48 +08:00
{
/* If the next symbol's name and address is 0, it means
the module just contains the originator and no symbols.
In this case we pretend that we never saw the module and
hope that some other loader will be able to load the module
and have access to its symbols */
const lt_dlsymlist *next_symbol = symbol +1;
if (next_symbol->address && next_symbol->name)
{
module = (lt_module) lists->symlist;
goto done;
}
This pervasive changeset makes two intertwined deep changes to the operation of libtool (neither would work alone). First, there is a new feature that allows libraries to preopen modules. This entails a backwards incompatible change to the libltdl API for separating out the preloaded symbol lists by owner. Second, in the tradition of "eating our own dogfood", libltdl now preloads its own dlloaders. The internal API for dlloaders has also had to change in a backwards incompatible way in support of the new library preloading feature. If you don't use preloaded libraries, you needn't change your project sources, though you will need to recompile against the new libltdl. The API changes are mostly confined to dlloaders, so you probably needn't worry about those (unless you have written a custom loader that you want libltdl to use): * configure.ac (AC_CONFIG_FILES): Add libltdl/loaders/Makefile. * libltdl/configure.ac (AC_CONFIG_FILES): Add loaders/Makefile. * libltdl/loaders: New directory for module loaders, to simplify Makefile rules, and to give the loaders themselves names that are unique in the first few characters. * libtoolize.in (func_copy_all_files): Copy recursively to pick up the loaders directory contents. * libltdl/loaders/Makefile.am: New file. Move module building rules to here... * libltdl/Makefile.am: ...from here. (VERSION_INFO): Bumped version info to signify interface changes. (libltdl_la_CPPFLAGS, libltdlc_la_CPPFLAGS): Set LTDLOPEN appropriately for each library. * libltdl/loader-dld_link.c, libltdl/loader-dlopen.c, libltdl/loader-dyld.c, libltdl/loader-load_add_on.c, libltdl/loader-loadlibrary.c libltdl/loader-preopen.c, libltdl/loader-shl_load.c: Moved from here... * libltdl/loaders/dld_link.c, libltdl/loaders/dlopen.c, libltdl/loaders/dyld.c, libltdl/loaders/load_add_on.c, libltdl/loaders/loadlibrary.c libltdl/loaders/preopen.c, libltdl/loaders/shl_load.c: ...to here. (get_vtable): New entry function for each. * libltdl/loaders/preopen.c (lt_dlsymlists_t): Replaced by... (symlist_chain): ...a new structure which maps lists of preloaded symbols from the object that loads them. (lt_dlpreload_open): New function to automatically open all preloaded modules belonging to a named object (ORIGINATOR). * libltdl/lt__alloc.c (lt__zalloc): New function to return a block of zeroed out new memory. * libltdl/lt__alloc.h (lt__zalloc): Prototype it. * libltdl/lt__private.h (lt__alloc_die_callback): Add missing prototype. (lt__error_strings): Make this opaque to callers. * libltdl/lt_error.c (lt__error_strings): Move the implementation to here. * libltdl/lt_dlloader.h (lt_user_dlloader): Add extra fields to make originator focused preloading possible. *BREAKS BACKWARDS COMPATIBILITY* (lt_dlloader_add): Take advantage of new fields to simplify paramater list. * libltdl/lt_system.h (LT_STR): New ANSI stringification macro. (LT_CONC): Fix it to work from within macros. * libltdl/ltdl.c (loader_init, loader_init_callback): Simplify dlloader loading. (get_vtable, preloaded_symbols): Point these at the preopen.c symbols to bootstrap the loader chain. (lt_dlinit): Load the preopen dlloader manually, and then use it to load any other preloaded dlloaders. (lt_dlloader_add): Simplify parameter list. Populate new fields. Chain new loaders according to priority field. * libltdl/ltdl.h (lt_dlsymlist): Add a new originator field. (lt_dlpreload_callback_func): Type of a callback for automatic lt_dlpreload_open loading. (LTDL_SET_PRELOADED_SYMBOLS): Adjust to hook into preloaded symbols from the "@PROGRAM@" originator. * tests/demo/dlmain.c (main): Use mangled preloaded_symbols symbol. * tests/pdemo/longer_file_name_dlmain.c (main): Ditto. * ltmain.in: Don't spew spurious warnings when dlopening and dlpreopening modules. (func_generate_dlsyms): Factored out from multiple copies in the rest of the code. Generate originator keyed symbol lists. (func_extract_archives): Also factored. Extract the contents of convenience archives for linking with dependent libraries when --whole-archive is not available. [darwin]: Don't try to link $old_library unless it exists, and $lib is a bundle. * m4/ltdl.m4 (AC_LTDL_DLLIB): Check for all possible dynamic loading libraries/apis rather that stopping when an acceptable one is discovered. (LT_DLLOADERS): New variable for holding dlloaders that can be preloaded. * doc/libtool.texi: Document interface changes. * NEWS: Updated.
2004-07-15 20:14:48 +08:00
}
}
}
LT__SETERROR (FILE_NOT_FOUND);
done:
return module;
}
/* A function called through the vtable when a particular module
should be unloaded. */
static int
vm_close (lt_user_data LT__UNUSED loader_data, lt_module module)
This pervasive changeset makes two intertwined deep changes to the operation of libtool (neither would work alone). First, there is a new feature that allows libraries to preopen modules. This entails a backwards incompatible change to the libltdl API for separating out the preloaded symbol lists by owner. Second, in the tradition of "eating our own dogfood", libltdl now preloads its own dlloaders. The internal API for dlloaders has also had to change in a backwards incompatible way in support of the new library preloading feature. If you don't use preloaded libraries, you needn't change your project sources, though you will need to recompile against the new libltdl. The API changes are mostly confined to dlloaders, so you probably needn't worry about those (unless you have written a custom loader that you want libltdl to use): * configure.ac (AC_CONFIG_FILES): Add libltdl/loaders/Makefile. * libltdl/configure.ac (AC_CONFIG_FILES): Add loaders/Makefile. * libltdl/loaders: New directory for module loaders, to simplify Makefile rules, and to give the loaders themselves names that are unique in the first few characters. * libtoolize.in (func_copy_all_files): Copy recursively to pick up the loaders directory contents. * libltdl/loaders/Makefile.am: New file. Move module building rules to here... * libltdl/Makefile.am: ...from here. (VERSION_INFO): Bumped version info to signify interface changes. (libltdl_la_CPPFLAGS, libltdlc_la_CPPFLAGS): Set LTDLOPEN appropriately for each library. * libltdl/loader-dld_link.c, libltdl/loader-dlopen.c, libltdl/loader-dyld.c, libltdl/loader-load_add_on.c, libltdl/loader-loadlibrary.c libltdl/loader-preopen.c, libltdl/loader-shl_load.c: Moved from here... * libltdl/loaders/dld_link.c, libltdl/loaders/dlopen.c, libltdl/loaders/dyld.c, libltdl/loaders/load_add_on.c, libltdl/loaders/loadlibrary.c libltdl/loaders/preopen.c, libltdl/loaders/shl_load.c: ...to here. (get_vtable): New entry function for each. * libltdl/loaders/preopen.c (lt_dlsymlists_t): Replaced by... (symlist_chain): ...a new structure which maps lists of preloaded symbols from the object that loads them. (lt_dlpreload_open): New function to automatically open all preloaded modules belonging to a named object (ORIGINATOR). * libltdl/lt__alloc.c (lt__zalloc): New function to return a block of zeroed out new memory. * libltdl/lt__alloc.h (lt__zalloc): Prototype it. * libltdl/lt__private.h (lt__alloc_die_callback): Add missing prototype. (lt__error_strings): Make this opaque to callers. * libltdl/lt_error.c (lt__error_strings): Move the implementation to here. * libltdl/lt_dlloader.h (lt_user_dlloader): Add extra fields to make originator focused preloading possible. *BREAKS BACKWARDS COMPATIBILITY* (lt_dlloader_add): Take advantage of new fields to simplify paramater list. * libltdl/lt_system.h (LT_STR): New ANSI stringification macro. (LT_CONC): Fix it to work from within macros. * libltdl/ltdl.c (loader_init, loader_init_callback): Simplify dlloader loading. (get_vtable, preloaded_symbols): Point these at the preopen.c symbols to bootstrap the loader chain. (lt_dlinit): Load the preopen dlloader manually, and then use it to load any other preloaded dlloaders. (lt_dlloader_add): Simplify parameter list. Populate new fields. Chain new loaders according to priority field. * libltdl/ltdl.h (lt_dlsymlist): Add a new originator field. (lt_dlpreload_callback_func): Type of a callback for automatic lt_dlpreload_open loading. (LTDL_SET_PRELOADED_SYMBOLS): Adjust to hook into preloaded symbols from the "@PROGRAM@" originator. * tests/demo/dlmain.c (main): Use mangled preloaded_symbols symbol. * tests/pdemo/longer_file_name_dlmain.c (main): Ditto. * ltmain.in: Don't spew spurious warnings when dlopening and dlpreopening modules. (func_generate_dlsyms): Factored out from multiple copies in the rest of the code. Generate originator keyed symbol lists. (func_extract_archives): Also factored. Extract the contents of convenience archives for linking with dependent libraries when --whole-archive is not available. [darwin]: Don't try to link $old_library unless it exists, and $lib is a bundle. * m4/ltdl.m4 (AC_LTDL_DLLIB): Check for all possible dynamic loading libraries/apis rather that stopping when an acceptable one is discovered. (LT_DLLOADERS): New variable for holding dlloaders that can be preloaded. * doc/libtool.texi: Document interface changes. * NEWS: Updated.
2004-07-15 20:14:48 +08:00
{
/* Just to silence gcc -Wall */
module = 0;
return 0;
}
/* A function called through the vtable to get the address of
a symbol loaded from a particular module. */
static void *
vm_sym (lt_user_data LT__UNUSED loader_data, lt_module module, const char *name)
This pervasive changeset makes two intertwined deep changes to the operation of libtool (neither would work alone). First, there is a new feature that allows libraries to preopen modules. This entails a backwards incompatible change to the libltdl API for separating out the preloaded symbol lists by owner. Second, in the tradition of "eating our own dogfood", libltdl now preloads its own dlloaders. The internal API for dlloaders has also had to change in a backwards incompatible way in support of the new library preloading feature. If you don't use preloaded libraries, you needn't change your project sources, though you will need to recompile against the new libltdl. The API changes are mostly confined to dlloaders, so you probably needn't worry about those (unless you have written a custom loader that you want libltdl to use): * configure.ac (AC_CONFIG_FILES): Add libltdl/loaders/Makefile. * libltdl/configure.ac (AC_CONFIG_FILES): Add loaders/Makefile. * libltdl/loaders: New directory for module loaders, to simplify Makefile rules, and to give the loaders themselves names that are unique in the first few characters. * libtoolize.in (func_copy_all_files): Copy recursively to pick up the loaders directory contents. * libltdl/loaders/Makefile.am: New file. Move module building rules to here... * libltdl/Makefile.am: ...from here. (VERSION_INFO): Bumped version info to signify interface changes. (libltdl_la_CPPFLAGS, libltdlc_la_CPPFLAGS): Set LTDLOPEN appropriately for each library. * libltdl/loader-dld_link.c, libltdl/loader-dlopen.c, libltdl/loader-dyld.c, libltdl/loader-load_add_on.c, libltdl/loader-loadlibrary.c libltdl/loader-preopen.c, libltdl/loader-shl_load.c: Moved from here... * libltdl/loaders/dld_link.c, libltdl/loaders/dlopen.c, libltdl/loaders/dyld.c, libltdl/loaders/load_add_on.c, libltdl/loaders/loadlibrary.c libltdl/loaders/preopen.c, libltdl/loaders/shl_load.c: ...to here. (get_vtable): New entry function for each. * libltdl/loaders/preopen.c (lt_dlsymlists_t): Replaced by... (symlist_chain): ...a new structure which maps lists of preloaded symbols from the object that loads them. (lt_dlpreload_open): New function to automatically open all preloaded modules belonging to a named object (ORIGINATOR). * libltdl/lt__alloc.c (lt__zalloc): New function to return a block of zeroed out new memory. * libltdl/lt__alloc.h (lt__zalloc): Prototype it. * libltdl/lt__private.h (lt__alloc_die_callback): Add missing prototype. (lt__error_strings): Make this opaque to callers. * libltdl/lt_error.c (lt__error_strings): Move the implementation to here. * libltdl/lt_dlloader.h (lt_user_dlloader): Add extra fields to make originator focused preloading possible. *BREAKS BACKWARDS COMPATIBILITY* (lt_dlloader_add): Take advantage of new fields to simplify paramater list. * libltdl/lt_system.h (LT_STR): New ANSI stringification macro. (LT_CONC): Fix it to work from within macros. * libltdl/ltdl.c (loader_init, loader_init_callback): Simplify dlloader loading. (get_vtable, preloaded_symbols): Point these at the preopen.c symbols to bootstrap the loader chain. (lt_dlinit): Load the preopen dlloader manually, and then use it to load any other preloaded dlloaders. (lt_dlloader_add): Simplify parameter list. Populate new fields. Chain new loaders according to priority field. * libltdl/ltdl.h (lt_dlsymlist): Add a new originator field. (lt_dlpreload_callback_func): Type of a callback for automatic lt_dlpreload_open loading. (LTDL_SET_PRELOADED_SYMBOLS): Adjust to hook into preloaded symbols from the "@PROGRAM@" originator. * tests/demo/dlmain.c (main): Use mangled preloaded_symbols symbol. * tests/pdemo/longer_file_name_dlmain.c (main): Ditto. * ltmain.in: Don't spew spurious warnings when dlopening and dlpreopening modules. (func_generate_dlsyms): Factored out from multiple copies in the rest of the code. Generate originator keyed symbol lists. (func_extract_archives): Also factored. Extract the contents of convenience archives for linking with dependent libraries when --whole-archive is not available. [darwin]: Don't try to link $old_library unless it exists, and $lib is a bundle. * m4/ltdl.m4 (AC_LTDL_DLLIB): Check for all possible dynamic loading libraries/apis rather that stopping when an acceptable one is discovered. (LT_DLLOADERS): New variable for holding dlloaders that can be preloaded. * doc/libtool.texi: Document interface changes. * NEWS: Updated.
2004-07-15 20:14:48 +08:00
{
lt_dlsymlist *symbol = (lt_dlsymlist*) module;
This pervasive changeset makes two intertwined deep changes to the operation of libtool (neither would work alone). First, there is a new feature that allows libraries to preopen modules. This entails a backwards incompatible change to the libltdl API for separating out the preloaded symbol lists by owner. Second, in the tradition of "eating our own dogfood", libltdl now preloads its own dlloaders. The internal API for dlloaders has also had to change in a backwards incompatible way in support of the new library preloading feature. If you don't use preloaded libraries, you needn't change your project sources, though you will need to recompile against the new libltdl. The API changes are mostly confined to dlloaders, so you probably needn't worry about those (unless you have written a custom loader that you want libltdl to use): * configure.ac (AC_CONFIG_FILES): Add libltdl/loaders/Makefile. * libltdl/configure.ac (AC_CONFIG_FILES): Add loaders/Makefile. * libltdl/loaders: New directory for module loaders, to simplify Makefile rules, and to give the loaders themselves names that are unique in the first few characters. * libtoolize.in (func_copy_all_files): Copy recursively to pick up the loaders directory contents. * libltdl/loaders/Makefile.am: New file. Move module building rules to here... * libltdl/Makefile.am: ...from here. (VERSION_INFO): Bumped version info to signify interface changes. (libltdl_la_CPPFLAGS, libltdlc_la_CPPFLAGS): Set LTDLOPEN appropriately for each library. * libltdl/loader-dld_link.c, libltdl/loader-dlopen.c, libltdl/loader-dyld.c, libltdl/loader-load_add_on.c, libltdl/loader-loadlibrary.c libltdl/loader-preopen.c, libltdl/loader-shl_load.c: Moved from here... * libltdl/loaders/dld_link.c, libltdl/loaders/dlopen.c, libltdl/loaders/dyld.c, libltdl/loaders/load_add_on.c, libltdl/loaders/loadlibrary.c libltdl/loaders/preopen.c, libltdl/loaders/shl_load.c: ...to here. (get_vtable): New entry function for each. * libltdl/loaders/preopen.c (lt_dlsymlists_t): Replaced by... (symlist_chain): ...a new structure which maps lists of preloaded symbols from the object that loads them. (lt_dlpreload_open): New function to automatically open all preloaded modules belonging to a named object (ORIGINATOR). * libltdl/lt__alloc.c (lt__zalloc): New function to return a block of zeroed out new memory. * libltdl/lt__alloc.h (lt__zalloc): Prototype it. * libltdl/lt__private.h (lt__alloc_die_callback): Add missing prototype. (lt__error_strings): Make this opaque to callers. * libltdl/lt_error.c (lt__error_strings): Move the implementation to here. * libltdl/lt_dlloader.h (lt_user_dlloader): Add extra fields to make originator focused preloading possible. *BREAKS BACKWARDS COMPATIBILITY* (lt_dlloader_add): Take advantage of new fields to simplify paramater list. * libltdl/lt_system.h (LT_STR): New ANSI stringification macro. (LT_CONC): Fix it to work from within macros. * libltdl/ltdl.c (loader_init, loader_init_callback): Simplify dlloader loading. (get_vtable, preloaded_symbols): Point these at the preopen.c symbols to bootstrap the loader chain. (lt_dlinit): Load the preopen dlloader manually, and then use it to load any other preloaded dlloaders. (lt_dlloader_add): Simplify parameter list. Populate new fields. Chain new loaders according to priority field. * libltdl/ltdl.h (lt_dlsymlist): Add a new originator field. (lt_dlpreload_callback_func): Type of a callback for automatic lt_dlpreload_open loading. (LTDL_SET_PRELOADED_SYMBOLS): Adjust to hook into preloaded symbols from the "@PROGRAM@" originator. * tests/demo/dlmain.c (main): Use mangled preloaded_symbols symbol. * tests/pdemo/longer_file_name_dlmain.c (main): Ditto. * ltmain.in: Don't spew spurious warnings when dlopening and dlpreopening modules. (func_generate_dlsyms): Factored out from multiple copies in the rest of the code. Generate originator keyed symbol lists. (func_extract_archives): Also factored. Extract the contents of convenience archives for linking with dependent libraries when --whole-archive is not available. [darwin]: Don't try to link $old_library unless it exists, and $lib is a bundle. * m4/ltdl.m4 (AC_LTDL_DLLIB): Check for all possible dynamic loading libraries/apis rather that stopping when an acceptable one is discovered. (LT_DLLOADERS): New variable for holding dlloaders that can be preloaded. * doc/libtool.texi: Document interface changes. * NEWS: Updated.
2004-07-15 20:14:48 +08:00
symbol +=2; /* Skip header (originator then libname). */
This pervasive changeset makes two intertwined deep changes to the operation of libtool (neither would work alone). First, there is a new feature that allows libraries to preopen modules. This entails a backwards incompatible change to the libltdl API for separating out the preloaded symbol lists by owner. Second, in the tradition of "eating our own dogfood", libltdl now preloads its own dlloaders. The internal API for dlloaders has also had to change in a backwards incompatible way in support of the new library preloading feature. If you don't use preloaded libraries, you needn't change your project sources, though you will need to recompile against the new libltdl. The API changes are mostly confined to dlloaders, so you probably needn't worry about those (unless you have written a custom loader that you want libltdl to use): * configure.ac (AC_CONFIG_FILES): Add libltdl/loaders/Makefile. * libltdl/configure.ac (AC_CONFIG_FILES): Add loaders/Makefile. * libltdl/loaders: New directory for module loaders, to simplify Makefile rules, and to give the loaders themselves names that are unique in the first few characters. * libtoolize.in (func_copy_all_files): Copy recursively to pick up the loaders directory contents. * libltdl/loaders/Makefile.am: New file. Move module building rules to here... * libltdl/Makefile.am: ...from here. (VERSION_INFO): Bumped version info to signify interface changes. (libltdl_la_CPPFLAGS, libltdlc_la_CPPFLAGS): Set LTDLOPEN appropriately for each library. * libltdl/loader-dld_link.c, libltdl/loader-dlopen.c, libltdl/loader-dyld.c, libltdl/loader-load_add_on.c, libltdl/loader-loadlibrary.c libltdl/loader-preopen.c, libltdl/loader-shl_load.c: Moved from here... * libltdl/loaders/dld_link.c, libltdl/loaders/dlopen.c, libltdl/loaders/dyld.c, libltdl/loaders/load_add_on.c, libltdl/loaders/loadlibrary.c libltdl/loaders/preopen.c, libltdl/loaders/shl_load.c: ...to here. (get_vtable): New entry function for each. * libltdl/loaders/preopen.c (lt_dlsymlists_t): Replaced by... (symlist_chain): ...a new structure which maps lists of preloaded symbols from the object that loads them. (lt_dlpreload_open): New function to automatically open all preloaded modules belonging to a named object (ORIGINATOR). * libltdl/lt__alloc.c (lt__zalloc): New function to return a block of zeroed out new memory. * libltdl/lt__alloc.h (lt__zalloc): Prototype it. * libltdl/lt__private.h (lt__alloc_die_callback): Add missing prototype. (lt__error_strings): Make this opaque to callers. * libltdl/lt_error.c (lt__error_strings): Move the implementation to here. * libltdl/lt_dlloader.h (lt_user_dlloader): Add extra fields to make originator focused preloading possible. *BREAKS BACKWARDS COMPATIBILITY* (lt_dlloader_add): Take advantage of new fields to simplify paramater list. * libltdl/lt_system.h (LT_STR): New ANSI stringification macro. (LT_CONC): Fix it to work from within macros. * libltdl/ltdl.c (loader_init, loader_init_callback): Simplify dlloader loading. (get_vtable, preloaded_symbols): Point these at the preopen.c symbols to bootstrap the loader chain. (lt_dlinit): Load the preopen dlloader manually, and then use it to load any other preloaded dlloaders. (lt_dlloader_add): Simplify parameter list. Populate new fields. Chain new loaders according to priority field. * libltdl/ltdl.h (lt_dlsymlist): Add a new originator field. (lt_dlpreload_callback_func): Type of a callback for automatic lt_dlpreload_open loading. (LTDL_SET_PRELOADED_SYMBOLS): Adjust to hook into preloaded symbols from the "@PROGRAM@" originator. * tests/demo/dlmain.c (main): Use mangled preloaded_symbols symbol. * tests/pdemo/longer_file_name_dlmain.c (main): Ditto. * ltmain.in: Don't spew spurious warnings when dlopening and dlpreopening modules. (func_generate_dlsyms): Factored out from multiple copies in the rest of the code. Generate originator keyed symbol lists. (func_extract_archives): Also factored. Extract the contents of convenience archives for linking with dependent libraries when --whole-archive is not available. [darwin]: Don't try to link $old_library unless it exists, and $lib is a bundle. * m4/ltdl.m4 (AC_LTDL_DLLIB): Check for all possible dynamic loading libraries/apis rather that stopping when an acceptable one is discovered. (LT_DLLOADERS): New variable for holding dlloaders that can be preloaded. * doc/libtool.texi: Document interface changes. * NEWS: Updated.
2004-07-15 20:14:48 +08:00
while (symbol->name)
{
if (streq (symbol->name, name))
This pervasive changeset makes two intertwined deep changes to the operation of libtool (neither would work alone). First, there is a new feature that allows libraries to preopen modules. This entails a backwards incompatible change to the libltdl API for separating out the preloaded symbol lists by owner. Second, in the tradition of "eating our own dogfood", libltdl now preloads its own dlloaders. The internal API for dlloaders has also had to change in a backwards incompatible way in support of the new library preloading feature. If you don't use preloaded libraries, you needn't change your project sources, though you will need to recompile against the new libltdl. The API changes are mostly confined to dlloaders, so you probably needn't worry about those (unless you have written a custom loader that you want libltdl to use): * configure.ac (AC_CONFIG_FILES): Add libltdl/loaders/Makefile. * libltdl/configure.ac (AC_CONFIG_FILES): Add loaders/Makefile. * libltdl/loaders: New directory for module loaders, to simplify Makefile rules, and to give the loaders themselves names that are unique in the first few characters. * libtoolize.in (func_copy_all_files): Copy recursively to pick up the loaders directory contents. * libltdl/loaders/Makefile.am: New file. Move module building rules to here... * libltdl/Makefile.am: ...from here. (VERSION_INFO): Bumped version info to signify interface changes. (libltdl_la_CPPFLAGS, libltdlc_la_CPPFLAGS): Set LTDLOPEN appropriately for each library. * libltdl/loader-dld_link.c, libltdl/loader-dlopen.c, libltdl/loader-dyld.c, libltdl/loader-load_add_on.c, libltdl/loader-loadlibrary.c libltdl/loader-preopen.c, libltdl/loader-shl_load.c: Moved from here... * libltdl/loaders/dld_link.c, libltdl/loaders/dlopen.c, libltdl/loaders/dyld.c, libltdl/loaders/load_add_on.c, libltdl/loaders/loadlibrary.c libltdl/loaders/preopen.c, libltdl/loaders/shl_load.c: ...to here. (get_vtable): New entry function for each. * libltdl/loaders/preopen.c (lt_dlsymlists_t): Replaced by... (symlist_chain): ...a new structure which maps lists of preloaded symbols from the object that loads them. (lt_dlpreload_open): New function to automatically open all preloaded modules belonging to a named object (ORIGINATOR). * libltdl/lt__alloc.c (lt__zalloc): New function to return a block of zeroed out new memory. * libltdl/lt__alloc.h (lt__zalloc): Prototype it. * libltdl/lt__private.h (lt__alloc_die_callback): Add missing prototype. (lt__error_strings): Make this opaque to callers. * libltdl/lt_error.c (lt__error_strings): Move the implementation to here. * libltdl/lt_dlloader.h (lt_user_dlloader): Add extra fields to make originator focused preloading possible. *BREAKS BACKWARDS COMPATIBILITY* (lt_dlloader_add): Take advantage of new fields to simplify paramater list. * libltdl/lt_system.h (LT_STR): New ANSI stringification macro. (LT_CONC): Fix it to work from within macros. * libltdl/ltdl.c (loader_init, loader_init_callback): Simplify dlloader loading. (get_vtable, preloaded_symbols): Point these at the preopen.c symbols to bootstrap the loader chain. (lt_dlinit): Load the preopen dlloader manually, and then use it to load any other preloaded dlloaders. (lt_dlloader_add): Simplify parameter list. Populate new fields. Chain new loaders according to priority field. * libltdl/ltdl.h (lt_dlsymlist): Add a new originator field. (lt_dlpreload_callback_func): Type of a callback for automatic lt_dlpreload_open loading. (LTDL_SET_PRELOADED_SYMBOLS): Adjust to hook into preloaded symbols from the "@PROGRAM@" originator. * tests/demo/dlmain.c (main): Use mangled preloaded_symbols symbol. * tests/pdemo/longer_file_name_dlmain.c (main): Ditto. * ltmain.in: Don't spew spurious warnings when dlopening and dlpreopening modules. (func_generate_dlsyms): Factored out from multiple copies in the rest of the code. Generate originator keyed symbol lists. (func_extract_archives): Also factored. Extract the contents of convenience archives for linking with dependent libraries when --whole-archive is not available. [darwin]: Don't try to link $old_library unless it exists, and $lib is a bundle. * m4/ltdl.m4 (AC_LTDL_DLLIB): Check for all possible dynamic loading libraries/apis rather that stopping when an acceptable one is discovered. (LT_DLLOADERS): New variable for holding dlloaders that can be preloaded. * doc/libtool.texi: Document interface changes. * NEWS: Updated.
2004-07-15 20:14:48 +08:00
{
return symbol->address;
}
++symbol;
}
LT__SETERROR (SYMBOL_NOT_FOUND);
return 0;
}
/* --- HELPER FUNCTIONS --- */
/* The symbol lists themselves are not allocated from the heap, but
we can unhook them and free up the chain of links between them. */
static int
free_symlists (void)
{
symlist_chain *lists;
lists = preloaded_symlists;
while (lists)
{
symlist_chain *next = lists->next;
FREE (lists);
lists = next;
}
preloaded_symlists = 0;
return 0;
}
/* Add a new symbol list to the global chain. */
static int
add_symlist (const lt_dlsymlist *symlist)
{
symlist_chain *lists;
int errors = 0;
/* Search for duplicate entries: */
for (lists = preloaded_symlists;
lists && lists->symlist != symlist; lists = lists->next)
/*NOWORK*/;
/* Don't add the same list twice: */
if (!lists)
{
symlist_chain *tmp = (symlist_chain *) lt__zalloc (sizeof *tmp);
This pervasive changeset makes two intertwined deep changes to the operation of libtool (neither would work alone). First, there is a new feature that allows libraries to preopen modules. This entails a backwards incompatible change to the libltdl API for separating out the preloaded symbol lists by owner. Second, in the tradition of "eating our own dogfood", libltdl now preloads its own dlloaders. The internal API for dlloaders has also had to change in a backwards incompatible way in support of the new library preloading feature. If you don't use preloaded libraries, you needn't change your project sources, though you will need to recompile against the new libltdl. The API changes are mostly confined to dlloaders, so you probably needn't worry about those (unless you have written a custom loader that you want libltdl to use): * configure.ac (AC_CONFIG_FILES): Add libltdl/loaders/Makefile. * libltdl/configure.ac (AC_CONFIG_FILES): Add loaders/Makefile. * libltdl/loaders: New directory for module loaders, to simplify Makefile rules, and to give the loaders themselves names that are unique in the first few characters. * libtoolize.in (func_copy_all_files): Copy recursively to pick up the loaders directory contents. * libltdl/loaders/Makefile.am: New file. Move module building rules to here... * libltdl/Makefile.am: ...from here. (VERSION_INFO): Bumped version info to signify interface changes. (libltdl_la_CPPFLAGS, libltdlc_la_CPPFLAGS): Set LTDLOPEN appropriately for each library. * libltdl/loader-dld_link.c, libltdl/loader-dlopen.c, libltdl/loader-dyld.c, libltdl/loader-load_add_on.c, libltdl/loader-loadlibrary.c libltdl/loader-preopen.c, libltdl/loader-shl_load.c: Moved from here... * libltdl/loaders/dld_link.c, libltdl/loaders/dlopen.c, libltdl/loaders/dyld.c, libltdl/loaders/load_add_on.c, libltdl/loaders/loadlibrary.c libltdl/loaders/preopen.c, libltdl/loaders/shl_load.c: ...to here. (get_vtable): New entry function for each. * libltdl/loaders/preopen.c (lt_dlsymlists_t): Replaced by... (symlist_chain): ...a new structure which maps lists of preloaded symbols from the object that loads them. (lt_dlpreload_open): New function to automatically open all preloaded modules belonging to a named object (ORIGINATOR). * libltdl/lt__alloc.c (lt__zalloc): New function to return a block of zeroed out new memory. * libltdl/lt__alloc.h (lt__zalloc): Prototype it. * libltdl/lt__private.h (lt__alloc_die_callback): Add missing prototype. (lt__error_strings): Make this opaque to callers. * libltdl/lt_error.c (lt__error_strings): Move the implementation to here. * libltdl/lt_dlloader.h (lt_user_dlloader): Add extra fields to make originator focused preloading possible. *BREAKS BACKWARDS COMPATIBILITY* (lt_dlloader_add): Take advantage of new fields to simplify paramater list. * libltdl/lt_system.h (LT_STR): New ANSI stringification macro. (LT_CONC): Fix it to work from within macros. * libltdl/ltdl.c (loader_init, loader_init_callback): Simplify dlloader loading. (get_vtable, preloaded_symbols): Point these at the preopen.c symbols to bootstrap the loader chain. (lt_dlinit): Load the preopen dlloader manually, and then use it to load any other preloaded dlloaders. (lt_dlloader_add): Simplify parameter list. Populate new fields. Chain new loaders according to priority field. * libltdl/ltdl.h (lt_dlsymlist): Add a new originator field. (lt_dlpreload_callback_func): Type of a callback for automatic lt_dlpreload_open loading. (LTDL_SET_PRELOADED_SYMBOLS): Adjust to hook into preloaded symbols from the "@PROGRAM@" originator. * tests/demo/dlmain.c (main): Use mangled preloaded_symbols symbol. * tests/pdemo/longer_file_name_dlmain.c (main): Ditto. * ltmain.in: Don't spew spurious warnings when dlopening and dlpreopening modules. (func_generate_dlsyms): Factored out from multiple copies in the rest of the code. Generate originator keyed symbol lists. (func_extract_archives): Also factored. Extract the contents of convenience archives for linking with dependent libraries when --whole-archive is not available. [darwin]: Don't try to link $old_library unless it exists, and $lib is a bundle. * m4/ltdl.m4 (AC_LTDL_DLLIB): Check for all possible dynamic loading libraries/apis rather that stopping when an acceptable one is discovered. (LT_DLLOADERS): New variable for holding dlloaders that can be preloaded. * doc/libtool.texi: Document interface changes. * NEWS: Updated.
2004-07-15 20:14:48 +08:00
if (tmp)
{
tmp->symlist = symlist;
tmp->next = preloaded_symlists;
preloaded_symlists = tmp;
}
else
{
++errors;
}
}
return errors;
}
/* --- PRELOADING API CALL IMPLEMENTATIONS --- */
/* Save a default symbol list for later. */
int
lt_dlpreload_default (const lt_dlsymlist *preloaded)
{
default_preloaded_symbols = preloaded;
return 0;
}
/* Add a symbol list to the global chain, or with a NULL argument,
revert to just the default list. */
int
lt_dlpreload (const lt_dlsymlist *preloaded)
{
int errors = 0;
if (preloaded)
{
errors = add_symlist (preloaded);
}
else
{
free_symlists();
if (default_preloaded_symbols)
{
errors = lt_dlpreload (default_preloaded_symbols);
}
}
return errors;
}
/* Open all the preloaded modules from the named originator, executing
Add a test to simulate a failure visible on systems which need a library prefix like 'lib', such as BeOS. Fix a number of bugs exposed by this test in order for it to pass. Currently the prefix is hardcoded as 'lib', as I am not aware of systems that require a different prefix: * libltdl/loaders/preopen.c (lt_dlpreload_open): Move error condition out of test loop to be sure that each originator is tried, instead of erroring out if the first doesn't match. Support passing NULL as the originator to load all preloaded modules originating in the program itself. * libltdl/lt_dlloader.c (lt_dlloader_dump): New debug function. * libltdl/libltdl/lt_dlloader.h (lt_dlloader_dump): Declare it when LT_DEBUG_LOADERS is defined at compile time. * libltdl/ltdl.c (lt_dlinit): Dump loader list after successful initialisation. (tryall_dlopen): Add a new VTABLE parameter to force use of a specific loader in preference to trying every loader in turn. Adjust all callers. (try_dlopen): Always see whether a module was preloaded for module names with no directory component before searching the filesystem for a match. * libltdl/m4/libtool.m4 (_LT_CMD_GLOBAL_SYMBOLS): Declare a new global_symbol_to_c_name_address_lib_prefix variable. (global_symbol_to_c_name_address_lib_prefix): The sed expressions to use when a lib prefix is enforced need to be slightly different to work with preloaded modules. * libltdl/config/ltmain.m4sh (func_generate_dlsyms): In order to name preloaded symbols correctly for the lookup algorithm to work when the loaded module file must be prefixed with lib. Use global_symbol_to_c_name_address_lib_prefix when need_lib_prefix is other than no. * tests/need_lib_prefix.at: New test to check for breakage on hosts where need_lib_prefix is unknown. * Makefile.am (TESTSUITE_AT): Add new test. * tests/TODO: Note missing tests that would have caught some of the latent bugs fixed by this patch. * HACKING: Document libltdl keyword. * NEWS: Updated.
2007-06-25 04:46:47 +08:00
a callback for each one. If ORIGINATOR is NULL, then call FUNC for
each preloaded module from the program itself. */
This pervasive changeset makes two intertwined deep changes to the operation of libtool (neither would work alone). First, there is a new feature that allows libraries to preopen modules. This entails a backwards incompatible change to the libltdl API for separating out the preloaded symbol lists by owner. Second, in the tradition of "eating our own dogfood", libltdl now preloads its own dlloaders. The internal API for dlloaders has also had to change in a backwards incompatible way in support of the new library preloading feature. If you don't use preloaded libraries, you needn't change your project sources, though you will need to recompile against the new libltdl. The API changes are mostly confined to dlloaders, so you probably needn't worry about those (unless you have written a custom loader that you want libltdl to use): * configure.ac (AC_CONFIG_FILES): Add libltdl/loaders/Makefile. * libltdl/configure.ac (AC_CONFIG_FILES): Add loaders/Makefile. * libltdl/loaders: New directory for module loaders, to simplify Makefile rules, and to give the loaders themselves names that are unique in the first few characters. * libtoolize.in (func_copy_all_files): Copy recursively to pick up the loaders directory contents. * libltdl/loaders/Makefile.am: New file. Move module building rules to here... * libltdl/Makefile.am: ...from here. (VERSION_INFO): Bumped version info to signify interface changes. (libltdl_la_CPPFLAGS, libltdlc_la_CPPFLAGS): Set LTDLOPEN appropriately for each library. * libltdl/loader-dld_link.c, libltdl/loader-dlopen.c, libltdl/loader-dyld.c, libltdl/loader-load_add_on.c, libltdl/loader-loadlibrary.c libltdl/loader-preopen.c, libltdl/loader-shl_load.c: Moved from here... * libltdl/loaders/dld_link.c, libltdl/loaders/dlopen.c, libltdl/loaders/dyld.c, libltdl/loaders/load_add_on.c, libltdl/loaders/loadlibrary.c libltdl/loaders/preopen.c, libltdl/loaders/shl_load.c: ...to here. (get_vtable): New entry function for each. * libltdl/loaders/preopen.c (lt_dlsymlists_t): Replaced by... (symlist_chain): ...a new structure which maps lists of preloaded symbols from the object that loads them. (lt_dlpreload_open): New function to automatically open all preloaded modules belonging to a named object (ORIGINATOR). * libltdl/lt__alloc.c (lt__zalloc): New function to return a block of zeroed out new memory. * libltdl/lt__alloc.h (lt__zalloc): Prototype it. * libltdl/lt__private.h (lt__alloc_die_callback): Add missing prototype. (lt__error_strings): Make this opaque to callers. * libltdl/lt_error.c (lt__error_strings): Move the implementation to here. * libltdl/lt_dlloader.h (lt_user_dlloader): Add extra fields to make originator focused preloading possible. *BREAKS BACKWARDS COMPATIBILITY* (lt_dlloader_add): Take advantage of new fields to simplify paramater list. * libltdl/lt_system.h (LT_STR): New ANSI stringification macro. (LT_CONC): Fix it to work from within macros. * libltdl/ltdl.c (loader_init, loader_init_callback): Simplify dlloader loading. (get_vtable, preloaded_symbols): Point these at the preopen.c symbols to bootstrap the loader chain. (lt_dlinit): Load the preopen dlloader manually, and then use it to load any other preloaded dlloaders. (lt_dlloader_add): Simplify parameter list. Populate new fields. Chain new loaders according to priority field. * libltdl/ltdl.h (lt_dlsymlist): Add a new originator field. (lt_dlpreload_callback_func): Type of a callback for automatic lt_dlpreload_open loading. (LTDL_SET_PRELOADED_SYMBOLS): Adjust to hook into preloaded symbols from the "@PROGRAM@" originator. * tests/demo/dlmain.c (main): Use mangled preloaded_symbols symbol. * tests/pdemo/longer_file_name_dlmain.c (main): Ditto. * ltmain.in: Don't spew spurious warnings when dlopening and dlpreopening modules. (func_generate_dlsyms): Factored out from multiple copies in the rest of the code. Generate originator keyed symbol lists. (func_extract_archives): Also factored. Extract the contents of convenience archives for linking with dependent libraries when --whole-archive is not available. [darwin]: Don't try to link $old_library unless it exists, and $lib is a bundle. * m4/ltdl.m4 (AC_LTDL_DLLIB): Check for all possible dynamic loading libraries/apis rather that stopping when an acceptable one is discovered. (LT_DLLOADERS): New variable for holding dlloaders that can be preloaded. * doc/libtool.texi: Document interface changes. * NEWS: Updated.
2004-07-15 20:14:48 +08:00
int
lt_dlpreload_open (const char *originator, lt_dlpreload_callback_func *func)
{
symlist_chain *list;
int errors = 0;
int found = 0;
/* For each symlist in the chain... */
for (list = preloaded_symlists; list; list = list->next)
{
/* ...that was preloaded by the requesting ORIGINATOR... */
Add a test to simulate a failure visible on systems which need a library prefix like 'lib', such as BeOS. Fix a number of bugs exposed by this test in order for it to pass. Currently the prefix is hardcoded as 'lib', as I am not aware of systems that require a different prefix: * libltdl/loaders/preopen.c (lt_dlpreload_open): Move error condition out of test loop to be sure that each originator is tried, instead of erroring out if the first doesn't match. Support passing NULL as the originator to load all preloaded modules originating in the program itself. * libltdl/lt_dlloader.c (lt_dlloader_dump): New debug function. * libltdl/libltdl/lt_dlloader.h (lt_dlloader_dump): Declare it when LT_DEBUG_LOADERS is defined at compile time. * libltdl/ltdl.c (lt_dlinit): Dump loader list after successful initialisation. (tryall_dlopen): Add a new VTABLE parameter to force use of a specific loader in preference to trying every loader in turn. Adjust all callers. (try_dlopen): Always see whether a module was preloaded for module names with no directory component before searching the filesystem for a match. * libltdl/m4/libtool.m4 (_LT_CMD_GLOBAL_SYMBOLS): Declare a new global_symbol_to_c_name_address_lib_prefix variable. (global_symbol_to_c_name_address_lib_prefix): The sed expressions to use when a lib prefix is enforced need to be slightly different to work with preloaded modules. * libltdl/config/ltmain.m4sh (func_generate_dlsyms): In order to name preloaded symbols correctly for the lookup algorithm to work when the loaded module file must be prefixed with lib. Use global_symbol_to_c_name_address_lib_prefix when need_lib_prefix is other than no. * tests/need_lib_prefix.at: New test to check for breakage on hosts where need_lib_prefix is unknown. * Makefile.am (TESTSUITE_AT): Add new test. * tests/TODO: Note missing tests that would have caught some of the latent bugs fixed by this patch. * HACKING: Document libltdl keyword. * NEWS: Updated.
2007-06-25 04:46:47 +08:00
if ((originator && streq (list->symlist->name, originator))
|| (!originator && streq (list->symlist->name, "@PROGRAM@")))
This pervasive changeset makes two intertwined deep changes to the operation of libtool (neither would work alone). First, there is a new feature that allows libraries to preopen modules. This entails a backwards incompatible change to the libltdl API for separating out the preloaded symbol lists by owner. Second, in the tradition of "eating our own dogfood", libltdl now preloads its own dlloaders. The internal API for dlloaders has also had to change in a backwards incompatible way in support of the new library preloading feature. If you don't use preloaded libraries, you needn't change your project sources, though you will need to recompile against the new libltdl. The API changes are mostly confined to dlloaders, so you probably needn't worry about those (unless you have written a custom loader that you want libltdl to use): * configure.ac (AC_CONFIG_FILES): Add libltdl/loaders/Makefile. * libltdl/configure.ac (AC_CONFIG_FILES): Add loaders/Makefile. * libltdl/loaders: New directory for module loaders, to simplify Makefile rules, and to give the loaders themselves names that are unique in the first few characters. * libtoolize.in (func_copy_all_files): Copy recursively to pick up the loaders directory contents. * libltdl/loaders/Makefile.am: New file. Move module building rules to here... * libltdl/Makefile.am: ...from here. (VERSION_INFO): Bumped version info to signify interface changes. (libltdl_la_CPPFLAGS, libltdlc_la_CPPFLAGS): Set LTDLOPEN appropriately for each library. * libltdl/loader-dld_link.c, libltdl/loader-dlopen.c, libltdl/loader-dyld.c, libltdl/loader-load_add_on.c, libltdl/loader-loadlibrary.c libltdl/loader-preopen.c, libltdl/loader-shl_load.c: Moved from here... * libltdl/loaders/dld_link.c, libltdl/loaders/dlopen.c, libltdl/loaders/dyld.c, libltdl/loaders/load_add_on.c, libltdl/loaders/loadlibrary.c libltdl/loaders/preopen.c, libltdl/loaders/shl_load.c: ...to here. (get_vtable): New entry function for each. * libltdl/loaders/preopen.c (lt_dlsymlists_t): Replaced by... (symlist_chain): ...a new structure which maps lists of preloaded symbols from the object that loads them. (lt_dlpreload_open): New function to automatically open all preloaded modules belonging to a named object (ORIGINATOR). * libltdl/lt__alloc.c (lt__zalloc): New function to return a block of zeroed out new memory. * libltdl/lt__alloc.h (lt__zalloc): Prototype it. * libltdl/lt__private.h (lt__alloc_die_callback): Add missing prototype. (lt__error_strings): Make this opaque to callers. * libltdl/lt_error.c (lt__error_strings): Move the implementation to here. * libltdl/lt_dlloader.h (lt_user_dlloader): Add extra fields to make originator focused preloading possible. *BREAKS BACKWARDS COMPATIBILITY* (lt_dlloader_add): Take advantage of new fields to simplify paramater list. * libltdl/lt_system.h (LT_STR): New ANSI stringification macro. (LT_CONC): Fix it to work from within macros. * libltdl/ltdl.c (loader_init, loader_init_callback): Simplify dlloader loading. (get_vtable, preloaded_symbols): Point these at the preopen.c symbols to bootstrap the loader chain. (lt_dlinit): Load the preopen dlloader manually, and then use it to load any other preloaded dlloaders. (lt_dlloader_add): Simplify parameter list. Populate new fields. Chain new loaders according to priority field. * libltdl/ltdl.h (lt_dlsymlist): Add a new originator field. (lt_dlpreload_callback_func): Type of a callback for automatic lt_dlpreload_open loading. (LTDL_SET_PRELOADED_SYMBOLS): Adjust to hook into preloaded symbols from the "@PROGRAM@" originator. * tests/demo/dlmain.c (main): Use mangled preloaded_symbols symbol. * tests/pdemo/longer_file_name_dlmain.c (main): Ditto. * ltmain.in: Don't spew spurious warnings when dlopening and dlpreopening modules. (func_generate_dlsyms): Factored out from multiple copies in the rest of the code. Generate originator keyed symbol lists. (func_extract_archives): Also factored. Extract the contents of convenience archives for linking with dependent libraries when --whole-archive is not available. [darwin]: Don't try to link $old_library unless it exists, and $lib is a bundle. * m4/ltdl.m4 (AC_LTDL_DLLIB): Check for all possible dynamic loading libraries/apis rather that stopping when an acceptable one is discovered. (LT_DLLOADERS): New variable for holding dlloaders that can be preloaded. * doc/libtool.texi: Document interface changes. * NEWS: Updated.
2004-07-15 20:14:48 +08:00
{
const lt_dlsymlist *symbol;
This pervasive changeset makes two intertwined deep changes to the operation of libtool (neither would work alone). First, there is a new feature that allows libraries to preopen modules. This entails a backwards incompatible change to the libltdl API for separating out the preloaded symbol lists by owner. Second, in the tradition of "eating our own dogfood", libltdl now preloads its own dlloaders. The internal API for dlloaders has also had to change in a backwards incompatible way in support of the new library preloading feature. If you don't use preloaded libraries, you needn't change your project sources, though you will need to recompile against the new libltdl. The API changes are mostly confined to dlloaders, so you probably needn't worry about those (unless you have written a custom loader that you want libltdl to use): * configure.ac (AC_CONFIG_FILES): Add libltdl/loaders/Makefile. * libltdl/configure.ac (AC_CONFIG_FILES): Add loaders/Makefile. * libltdl/loaders: New directory for module loaders, to simplify Makefile rules, and to give the loaders themselves names that are unique in the first few characters. * libtoolize.in (func_copy_all_files): Copy recursively to pick up the loaders directory contents. * libltdl/loaders/Makefile.am: New file. Move module building rules to here... * libltdl/Makefile.am: ...from here. (VERSION_INFO): Bumped version info to signify interface changes. (libltdl_la_CPPFLAGS, libltdlc_la_CPPFLAGS): Set LTDLOPEN appropriately for each library. * libltdl/loader-dld_link.c, libltdl/loader-dlopen.c, libltdl/loader-dyld.c, libltdl/loader-load_add_on.c, libltdl/loader-loadlibrary.c libltdl/loader-preopen.c, libltdl/loader-shl_load.c: Moved from here... * libltdl/loaders/dld_link.c, libltdl/loaders/dlopen.c, libltdl/loaders/dyld.c, libltdl/loaders/load_add_on.c, libltdl/loaders/loadlibrary.c libltdl/loaders/preopen.c, libltdl/loaders/shl_load.c: ...to here. (get_vtable): New entry function for each. * libltdl/loaders/preopen.c (lt_dlsymlists_t): Replaced by... (symlist_chain): ...a new structure which maps lists of preloaded symbols from the object that loads them. (lt_dlpreload_open): New function to automatically open all preloaded modules belonging to a named object (ORIGINATOR). * libltdl/lt__alloc.c (lt__zalloc): New function to return a block of zeroed out new memory. * libltdl/lt__alloc.h (lt__zalloc): Prototype it. * libltdl/lt__private.h (lt__alloc_die_callback): Add missing prototype. (lt__error_strings): Make this opaque to callers. * libltdl/lt_error.c (lt__error_strings): Move the implementation to here. * libltdl/lt_dlloader.h (lt_user_dlloader): Add extra fields to make originator focused preloading possible. *BREAKS BACKWARDS COMPATIBILITY* (lt_dlloader_add): Take advantage of new fields to simplify paramater list. * libltdl/lt_system.h (LT_STR): New ANSI stringification macro. (LT_CONC): Fix it to work from within macros. * libltdl/ltdl.c (loader_init, loader_init_callback): Simplify dlloader loading. (get_vtable, preloaded_symbols): Point these at the preopen.c symbols to bootstrap the loader chain. (lt_dlinit): Load the preopen dlloader manually, and then use it to load any other preloaded dlloaders. (lt_dlloader_add): Simplify parameter list. Populate new fields. Chain new loaders according to priority field. * libltdl/ltdl.h (lt_dlsymlist): Add a new originator field. (lt_dlpreload_callback_func): Type of a callback for automatic lt_dlpreload_open loading. (LTDL_SET_PRELOADED_SYMBOLS): Adjust to hook into preloaded symbols from the "@PROGRAM@" originator. * tests/demo/dlmain.c (main): Use mangled preloaded_symbols symbol. * tests/pdemo/longer_file_name_dlmain.c (main): Ditto. * ltmain.in: Don't spew spurious warnings when dlopening and dlpreopening modules. (func_generate_dlsyms): Factored out from multiple copies in the rest of the code. Generate originator keyed symbol lists. (func_extract_archives): Also factored. Extract the contents of convenience archives for linking with dependent libraries when --whole-archive is not available. [darwin]: Don't try to link $old_library unless it exists, and $lib is a bundle. * m4/ltdl.m4 (AC_LTDL_DLLIB): Check for all possible dynamic loading libraries/apis rather that stopping when an acceptable one is discovered. (LT_DLLOADERS): New variable for holding dlloaders that can be preloaded. * doc/libtool.texi: Document interface changes. * NEWS: Updated.
2004-07-15 20:14:48 +08:00
unsigned int idx = 0;
++found;
/* ...load the symbols per source compilation unit:
(we preincrement the index to skip over the originator entry) */
while ((symbol = &list->symlist[++idx])->name != 0)
This pervasive changeset makes two intertwined deep changes to the operation of libtool (neither would work alone). First, there is a new feature that allows libraries to preopen modules. This entails a backwards incompatible change to the libltdl API for separating out the preloaded symbol lists by owner. Second, in the tradition of "eating our own dogfood", libltdl now preloads its own dlloaders. The internal API for dlloaders has also had to change in a backwards incompatible way in support of the new library preloading feature. If you don't use preloaded libraries, you needn't change your project sources, though you will need to recompile against the new libltdl. The API changes are mostly confined to dlloaders, so you probably needn't worry about those (unless you have written a custom loader that you want libltdl to use): * configure.ac (AC_CONFIG_FILES): Add libltdl/loaders/Makefile. * libltdl/configure.ac (AC_CONFIG_FILES): Add loaders/Makefile. * libltdl/loaders: New directory for module loaders, to simplify Makefile rules, and to give the loaders themselves names that are unique in the first few characters. * libtoolize.in (func_copy_all_files): Copy recursively to pick up the loaders directory contents. * libltdl/loaders/Makefile.am: New file. Move module building rules to here... * libltdl/Makefile.am: ...from here. (VERSION_INFO): Bumped version info to signify interface changes. (libltdl_la_CPPFLAGS, libltdlc_la_CPPFLAGS): Set LTDLOPEN appropriately for each library. * libltdl/loader-dld_link.c, libltdl/loader-dlopen.c, libltdl/loader-dyld.c, libltdl/loader-load_add_on.c, libltdl/loader-loadlibrary.c libltdl/loader-preopen.c, libltdl/loader-shl_load.c: Moved from here... * libltdl/loaders/dld_link.c, libltdl/loaders/dlopen.c, libltdl/loaders/dyld.c, libltdl/loaders/load_add_on.c, libltdl/loaders/loadlibrary.c libltdl/loaders/preopen.c, libltdl/loaders/shl_load.c: ...to here. (get_vtable): New entry function for each. * libltdl/loaders/preopen.c (lt_dlsymlists_t): Replaced by... (symlist_chain): ...a new structure which maps lists of preloaded symbols from the object that loads them. (lt_dlpreload_open): New function to automatically open all preloaded modules belonging to a named object (ORIGINATOR). * libltdl/lt__alloc.c (lt__zalloc): New function to return a block of zeroed out new memory. * libltdl/lt__alloc.h (lt__zalloc): Prototype it. * libltdl/lt__private.h (lt__alloc_die_callback): Add missing prototype. (lt__error_strings): Make this opaque to callers. * libltdl/lt_error.c (lt__error_strings): Move the implementation to here. * libltdl/lt_dlloader.h (lt_user_dlloader): Add extra fields to make originator focused preloading possible. *BREAKS BACKWARDS COMPATIBILITY* (lt_dlloader_add): Take advantage of new fields to simplify paramater list. * libltdl/lt_system.h (LT_STR): New ANSI stringification macro. (LT_CONC): Fix it to work from within macros. * libltdl/ltdl.c (loader_init, loader_init_callback): Simplify dlloader loading. (get_vtable, preloaded_symbols): Point these at the preopen.c symbols to bootstrap the loader chain. (lt_dlinit): Load the preopen dlloader manually, and then use it to load any other preloaded dlloaders. (lt_dlloader_add): Simplify parameter list. Populate new fields. Chain new loaders according to priority field. * libltdl/ltdl.h (lt_dlsymlist): Add a new originator field. (lt_dlpreload_callback_func): Type of a callback for automatic lt_dlpreload_open loading. (LTDL_SET_PRELOADED_SYMBOLS): Adjust to hook into preloaded symbols from the "@PROGRAM@" originator. * tests/demo/dlmain.c (main): Use mangled preloaded_symbols symbol. * tests/pdemo/longer_file_name_dlmain.c (main): Ditto. * ltmain.in: Don't spew spurious warnings when dlopening and dlpreopening modules. (func_generate_dlsyms): Factored out from multiple copies in the rest of the code. Generate originator keyed symbol lists. (func_extract_archives): Also factored. Extract the contents of convenience archives for linking with dependent libraries when --whole-archive is not available. [darwin]: Don't try to link $old_library unless it exists, and $lib is a bundle. * m4/ltdl.m4 (AC_LTDL_DLLIB): Check for all possible dynamic loading libraries/apis rather that stopping when an acceptable one is discovered. (LT_DLLOADERS): New variable for holding dlloaders that can be preloaded. * doc/libtool.texi: Document interface changes. * NEWS: Updated.
2004-07-15 20:14:48 +08:00
{
if ((symbol->address == 0)
&& (strneq (symbol->name, "@PROGRAM@")))
This pervasive changeset makes two intertwined deep changes to the operation of libtool (neither would work alone). First, there is a new feature that allows libraries to preopen modules. This entails a backwards incompatible change to the libltdl API for separating out the preloaded symbol lists by owner. Second, in the tradition of "eating our own dogfood", libltdl now preloads its own dlloaders. The internal API for dlloaders has also had to change in a backwards incompatible way in support of the new library preloading feature. If you don't use preloaded libraries, you needn't change your project sources, though you will need to recompile against the new libltdl. The API changes are mostly confined to dlloaders, so you probably needn't worry about those (unless you have written a custom loader that you want libltdl to use): * configure.ac (AC_CONFIG_FILES): Add libltdl/loaders/Makefile. * libltdl/configure.ac (AC_CONFIG_FILES): Add loaders/Makefile. * libltdl/loaders: New directory for module loaders, to simplify Makefile rules, and to give the loaders themselves names that are unique in the first few characters. * libtoolize.in (func_copy_all_files): Copy recursively to pick up the loaders directory contents. * libltdl/loaders/Makefile.am: New file. Move module building rules to here... * libltdl/Makefile.am: ...from here. (VERSION_INFO): Bumped version info to signify interface changes. (libltdl_la_CPPFLAGS, libltdlc_la_CPPFLAGS): Set LTDLOPEN appropriately for each library. * libltdl/loader-dld_link.c, libltdl/loader-dlopen.c, libltdl/loader-dyld.c, libltdl/loader-load_add_on.c, libltdl/loader-loadlibrary.c libltdl/loader-preopen.c, libltdl/loader-shl_load.c: Moved from here... * libltdl/loaders/dld_link.c, libltdl/loaders/dlopen.c, libltdl/loaders/dyld.c, libltdl/loaders/load_add_on.c, libltdl/loaders/loadlibrary.c libltdl/loaders/preopen.c, libltdl/loaders/shl_load.c: ...to here. (get_vtable): New entry function for each. * libltdl/loaders/preopen.c (lt_dlsymlists_t): Replaced by... (symlist_chain): ...a new structure which maps lists of preloaded symbols from the object that loads them. (lt_dlpreload_open): New function to automatically open all preloaded modules belonging to a named object (ORIGINATOR). * libltdl/lt__alloc.c (lt__zalloc): New function to return a block of zeroed out new memory. * libltdl/lt__alloc.h (lt__zalloc): Prototype it. * libltdl/lt__private.h (lt__alloc_die_callback): Add missing prototype. (lt__error_strings): Make this opaque to callers. * libltdl/lt_error.c (lt__error_strings): Move the implementation to here. * libltdl/lt_dlloader.h (lt_user_dlloader): Add extra fields to make originator focused preloading possible. *BREAKS BACKWARDS COMPATIBILITY* (lt_dlloader_add): Take advantage of new fields to simplify paramater list. * libltdl/lt_system.h (LT_STR): New ANSI stringification macro. (LT_CONC): Fix it to work from within macros. * libltdl/ltdl.c (loader_init, loader_init_callback): Simplify dlloader loading. (get_vtable, preloaded_symbols): Point these at the preopen.c symbols to bootstrap the loader chain. (lt_dlinit): Load the preopen dlloader manually, and then use it to load any other preloaded dlloaders. (lt_dlloader_add): Simplify parameter list. Populate new fields. Chain new loaders according to priority field. * libltdl/ltdl.h (lt_dlsymlist): Add a new originator field. (lt_dlpreload_callback_func): Type of a callback for automatic lt_dlpreload_open loading. (LTDL_SET_PRELOADED_SYMBOLS): Adjust to hook into preloaded symbols from the "@PROGRAM@" originator. * tests/demo/dlmain.c (main): Use mangled preloaded_symbols symbol. * tests/pdemo/longer_file_name_dlmain.c (main): Ditto. * ltmain.in: Don't spew spurious warnings when dlopening and dlpreopening modules. (func_generate_dlsyms): Factored out from multiple copies in the rest of the code. Generate originator keyed symbol lists. (func_extract_archives): Also factored. Extract the contents of convenience archives for linking with dependent libraries when --whole-archive is not available. [darwin]: Don't try to link $old_library unless it exists, and $lib is a bundle. * m4/ltdl.m4 (AC_LTDL_DLLIB): Check for all possible dynamic loading libraries/apis rather that stopping when an acceptable one is discovered. (LT_DLLOADERS): New variable for holding dlloaders that can be preloaded. * doc/libtool.texi: Document interface changes. * NEWS: Updated.
2004-07-15 20:14:48 +08:00
{
lt_dlhandle handle = lt_dlopen (symbol->name);
if (handle == 0)
{
++errors;
}
else
{
errors += (*func) (handle);
}
}
}
}
Add a test to simulate a failure visible on systems which need a library prefix like 'lib', such as BeOS. Fix a number of bugs exposed by this test in order for it to pass. Currently the prefix is hardcoded as 'lib', as I am not aware of systems that require a different prefix: * libltdl/loaders/preopen.c (lt_dlpreload_open): Move error condition out of test loop to be sure that each originator is tried, instead of erroring out if the first doesn't match. Support passing NULL as the originator to load all preloaded modules originating in the program itself. * libltdl/lt_dlloader.c (lt_dlloader_dump): New debug function. * libltdl/libltdl/lt_dlloader.h (lt_dlloader_dump): Declare it when LT_DEBUG_LOADERS is defined at compile time. * libltdl/ltdl.c (lt_dlinit): Dump loader list after successful initialisation. (tryall_dlopen): Add a new VTABLE parameter to force use of a specific loader in preference to trying every loader in turn. Adjust all callers. (try_dlopen): Always see whether a module was preloaded for module names with no directory component before searching the filesystem for a match. * libltdl/m4/libtool.m4 (_LT_CMD_GLOBAL_SYMBOLS): Declare a new global_symbol_to_c_name_address_lib_prefix variable. (global_symbol_to_c_name_address_lib_prefix): The sed expressions to use when a lib prefix is enforced need to be slightly different to work with preloaded modules. * libltdl/config/ltmain.m4sh (func_generate_dlsyms): In order to name preloaded symbols correctly for the lookup algorithm to work when the loaded module file must be prefixed with lib. Use global_symbol_to_c_name_address_lib_prefix when need_lib_prefix is other than no. * tests/need_lib_prefix.at: New test to check for breakage on hosts where need_lib_prefix is unknown. * Makefile.am (TESTSUITE_AT): Add new test. * tests/TODO: Note missing tests that would have caught some of the latent bugs fixed by this patch. * HACKING: Document libltdl keyword. * NEWS: Updated.
2007-06-25 04:46:47 +08:00
}
This pervasive changeset makes two intertwined deep changes to the operation of libtool (neither would work alone). First, there is a new feature that allows libraries to preopen modules. This entails a backwards incompatible change to the libltdl API for separating out the preloaded symbol lists by owner. Second, in the tradition of "eating our own dogfood", libltdl now preloads its own dlloaders. The internal API for dlloaders has also had to change in a backwards incompatible way in support of the new library preloading feature. If you don't use preloaded libraries, you needn't change your project sources, though you will need to recompile against the new libltdl. The API changes are mostly confined to dlloaders, so you probably needn't worry about those (unless you have written a custom loader that you want libltdl to use): * configure.ac (AC_CONFIG_FILES): Add libltdl/loaders/Makefile. * libltdl/configure.ac (AC_CONFIG_FILES): Add loaders/Makefile. * libltdl/loaders: New directory for module loaders, to simplify Makefile rules, and to give the loaders themselves names that are unique in the first few characters. * libtoolize.in (func_copy_all_files): Copy recursively to pick up the loaders directory contents. * libltdl/loaders/Makefile.am: New file. Move module building rules to here... * libltdl/Makefile.am: ...from here. (VERSION_INFO): Bumped version info to signify interface changes. (libltdl_la_CPPFLAGS, libltdlc_la_CPPFLAGS): Set LTDLOPEN appropriately for each library. * libltdl/loader-dld_link.c, libltdl/loader-dlopen.c, libltdl/loader-dyld.c, libltdl/loader-load_add_on.c, libltdl/loader-loadlibrary.c libltdl/loader-preopen.c, libltdl/loader-shl_load.c: Moved from here... * libltdl/loaders/dld_link.c, libltdl/loaders/dlopen.c, libltdl/loaders/dyld.c, libltdl/loaders/load_add_on.c, libltdl/loaders/loadlibrary.c libltdl/loaders/preopen.c, libltdl/loaders/shl_load.c: ...to here. (get_vtable): New entry function for each. * libltdl/loaders/preopen.c (lt_dlsymlists_t): Replaced by... (symlist_chain): ...a new structure which maps lists of preloaded symbols from the object that loads them. (lt_dlpreload_open): New function to automatically open all preloaded modules belonging to a named object (ORIGINATOR). * libltdl/lt__alloc.c (lt__zalloc): New function to return a block of zeroed out new memory. * libltdl/lt__alloc.h (lt__zalloc): Prototype it. * libltdl/lt__private.h (lt__alloc_die_callback): Add missing prototype. (lt__error_strings): Make this opaque to callers. * libltdl/lt_error.c (lt__error_strings): Move the implementation to here. * libltdl/lt_dlloader.h (lt_user_dlloader): Add extra fields to make originator focused preloading possible. *BREAKS BACKWARDS COMPATIBILITY* (lt_dlloader_add): Take advantage of new fields to simplify paramater list. * libltdl/lt_system.h (LT_STR): New ANSI stringification macro. (LT_CONC): Fix it to work from within macros. * libltdl/ltdl.c (loader_init, loader_init_callback): Simplify dlloader loading. (get_vtable, preloaded_symbols): Point these at the preopen.c symbols to bootstrap the loader chain. (lt_dlinit): Load the preopen dlloader manually, and then use it to load any other preloaded dlloaders. (lt_dlloader_add): Simplify parameter list. Populate new fields. Chain new loaders according to priority field. * libltdl/ltdl.h (lt_dlsymlist): Add a new originator field. (lt_dlpreload_callback_func): Type of a callback for automatic lt_dlpreload_open loading. (LTDL_SET_PRELOADED_SYMBOLS): Adjust to hook into preloaded symbols from the "@PROGRAM@" originator. * tests/demo/dlmain.c (main): Use mangled preloaded_symbols symbol. * tests/pdemo/longer_file_name_dlmain.c (main): Ditto. * ltmain.in: Don't spew spurious warnings when dlopening and dlpreopening modules. (func_generate_dlsyms): Factored out from multiple copies in the rest of the code. Generate originator keyed symbol lists. (func_extract_archives): Also factored. Extract the contents of convenience archives for linking with dependent libraries when --whole-archive is not available. [darwin]: Don't try to link $old_library unless it exists, and $lib is a bundle. * m4/ltdl.m4 (AC_LTDL_DLLIB): Check for all possible dynamic loading libraries/apis rather that stopping when an acceptable one is discovered. (LT_DLLOADERS): New variable for holding dlloaders that can be preloaded. * doc/libtool.texi: Document interface changes. * NEWS: Updated.
2004-07-15 20:14:48 +08:00
Add a test to simulate a failure visible on systems which need a library prefix like 'lib', such as BeOS. Fix a number of bugs exposed by this test in order for it to pass. Currently the prefix is hardcoded as 'lib', as I am not aware of systems that require a different prefix: * libltdl/loaders/preopen.c (lt_dlpreload_open): Move error condition out of test loop to be sure that each originator is tried, instead of erroring out if the first doesn't match. Support passing NULL as the originator to load all preloaded modules originating in the program itself. * libltdl/lt_dlloader.c (lt_dlloader_dump): New debug function. * libltdl/libltdl/lt_dlloader.h (lt_dlloader_dump): Declare it when LT_DEBUG_LOADERS is defined at compile time. * libltdl/ltdl.c (lt_dlinit): Dump loader list after successful initialisation. (tryall_dlopen): Add a new VTABLE parameter to force use of a specific loader in preference to trying every loader in turn. Adjust all callers. (try_dlopen): Always see whether a module was preloaded for module names with no directory component before searching the filesystem for a match. * libltdl/m4/libtool.m4 (_LT_CMD_GLOBAL_SYMBOLS): Declare a new global_symbol_to_c_name_address_lib_prefix variable. (global_symbol_to_c_name_address_lib_prefix): The sed expressions to use when a lib prefix is enforced need to be slightly different to work with preloaded modules. * libltdl/config/ltmain.m4sh (func_generate_dlsyms): In order to name preloaded symbols correctly for the lookup algorithm to work when the loaded module file must be prefixed with lib. Use global_symbol_to_c_name_address_lib_prefix when need_lib_prefix is other than no. * tests/need_lib_prefix.at: New test to check for breakage on hosts where need_lib_prefix is unknown. * Makefile.am (TESTSUITE_AT): Add new test. * tests/TODO: Note missing tests that would have caught some of the latent bugs fixed by this patch. * HACKING: Document libltdl keyword. * NEWS: Updated.
2007-06-25 04:46:47 +08:00
if (!found)
{
LT__SETERROR(CANNOT_OPEN);
++errors;
This pervasive changeset makes two intertwined deep changes to the operation of libtool (neither would work alone). First, there is a new feature that allows libraries to preopen modules. This entails a backwards incompatible change to the libltdl API for separating out the preloaded symbol lists by owner. Second, in the tradition of "eating our own dogfood", libltdl now preloads its own dlloaders. The internal API for dlloaders has also had to change in a backwards incompatible way in support of the new library preloading feature. If you don't use preloaded libraries, you needn't change your project sources, though you will need to recompile against the new libltdl. The API changes are mostly confined to dlloaders, so you probably needn't worry about those (unless you have written a custom loader that you want libltdl to use): * configure.ac (AC_CONFIG_FILES): Add libltdl/loaders/Makefile. * libltdl/configure.ac (AC_CONFIG_FILES): Add loaders/Makefile. * libltdl/loaders: New directory for module loaders, to simplify Makefile rules, and to give the loaders themselves names that are unique in the first few characters. * libtoolize.in (func_copy_all_files): Copy recursively to pick up the loaders directory contents. * libltdl/loaders/Makefile.am: New file. Move module building rules to here... * libltdl/Makefile.am: ...from here. (VERSION_INFO): Bumped version info to signify interface changes. (libltdl_la_CPPFLAGS, libltdlc_la_CPPFLAGS): Set LTDLOPEN appropriately for each library. * libltdl/loader-dld_link.c, libltdl/loader-dlopen.c, libltdl/loader-dyld.c, libltdl/loader-load_add_on.c, libltdl/loader-loadlibrary.c libltdl/loader-preopen.c, libltdl/loader-shl_load.c: Moved from here... * libltdl/loaders/dld_link.c, libltdl/loaders/dlopen.c, libltdl/loaders/dyld.c, libltdl/loaders/load_add_on.c, libltdl/loaders/loadlibrary.c libltdl/loaders/preopen.c, libltdl/loaders/shl_load.c: ...to here. (get_vtable): New entry function for each. * libltdl/loaders/preopen.c (lt_dlsymlists_t): Replaced by... (symlist_chain): ...a new structure which maps lists of preloaded symbols from the object that loads them. (lt_dlpreload_open): New function to automatically open all preloaded modules belonging to a named object (ORIGINATOR). * libltdl/lt__alloc.c (lt__zalloc): New function to return a block of zeroed out new memory. * libltdl/lt__alloc.h (lt__zalloc): Prototype it. * libltdl/lt__private.h (lt__alloc_die_callback): Add missing prototype. (lt__error_strings): Make this opaque to callers. * libltdl/lt_error.c (lt__error_strings): Move the implementation to here. * libltdl/lt_dlloader.h (lt_user_dlloader): Add extra fields to make originator focused preloading possible. *BREAKS BACKWARDS COMPATIBILITY* (lt_dlloader_add): Take advantage of new fields to simplify paramater list. * libltdl/lt_system.h (LT_STR): New ANSI stringification macro. (LT_CONC): Fix it to work from within macros. * libltdl/ltdl.c (loader_init, loader_init_callback): Simplify dlloader loading. (get_vtable, preloaded_symbols): Point these at the preopen.c symbols to bootstrap the loader chain. (lt_dlinit): Load the preopen dlloader manually, and then use it to load any other preloaded dlloaders. (lt_dlloader_add): Simplify parameter list. Populate new fields. Chain new loaders according to priority field. * libltdl/ltdl.h (lt_dlsymlist): Add a new originator field. (lt_dlpreload_callback_func): Type of a callback for automatic lt_dlpreload_open loading. (LTDL_SET_PRELOADED_SYMBOLS): Adjust to hook into preloaded symbols from the "@PROGRAM@" originator. * tests/demo/dlmain.c (main): Use mangled preloaded_symbols symbol. * tests/pdemo/longer_file_name_dlmain.c (main): Ditto. * ltmain.in: Don't spew spurious warnings when dlopening and dlpreopening modules. (func_generate_dlsyms): Factored out from multiple copies in the rest of the code. Generate originator keyed symbol lists. (func_extract_archives): Also factored. Extract the contents of convenience archives for linking with dependent libraries when --whole-archive is not available. [darwin]: Don't try to link $old_library unless it exists, and $lib is a bundle. * m4/ltdl.m4 (AC_LTDL_DLLIB): Check for all possible dynamic loading libraries/apis rather that stopping when an acceptable one is discovered. (LT_DLLOADERS): New variable for holding dlloaders that can be preloaded. * doc/libtool.texi: Document interface changes. * NEWS: Updated.
2004-07-15 20:14:48 +08:00
}
return errors;
}