1 NEWS - list of user-visible changes between releases of GNU Libtool
3 New in 2.4.2 2011-10-17: git version 2.4.1a, Libtool team:
7 - The --with-pic configure option now supports a list of comma-separated
8 package names. This can be used to build some static libraries with PIC
9 objects while building others with non-PIC objects.
11 - Initial support for Go, using the gccgo compiler.
13 - On Mac OS X .dylib is now tried as well as .so with
18 - The generic approximation of the command line length limit (when getconf is
19 not available) works again. Regression introduced in v2.2.6-39-g9c3d4d8.
20 - The bug that leaked developer tool paths into the release tarballs
21 from ./bootstrap is fixed.
22 - Improved support for the Cuda Compiler Driver (nvcc) on Darwin.
23 - For GCC LTO support, the -fuse-linker-plugin switch is now also removed
24 when computing compiler postdeps.
26 * Important incompatible changes:
28 - The undocumented hardcode_libdir_flag_spec_ld tag variable has been
29 removed in favor of using hardcode_libdir_flag_spec with $wl set to empty.
31 * Changes in supported systems or compilers:
33 - Fixes for gfortran on Darwin, XL Fortran on GNU/Linux.
34 - Support for FreeBSD 1.x (outdated since 1994) has been removed.
36 New in 2.4 2010-09-22: git version 2.2.11a, Libtool team:
40 - Sysroot support. This allows you to build cross-compiled packages
41 with the same prefix that will be used on the destination machine,
42 and still find dependent libraries under the compiler's "sysroot".
43 Without sysroot support, paths internal to the build system may leak
44 into the product of the build.
46 Sysroot support is disabled unless the --with-sysroot configure
47 option is passed to configure, because .la files generated with
48 sysroot support will _not_ be usable in general with older Libtools.
50 - On non-cygwin Windows systems, we now lookup potential library
51 file names without regard to file name case.
52 - The old testsuite now uses the `parallel-tests' Automake test driver
53 now for more concurrency and better test logging. For this, tests are
54 run in verbose mode by default now.
56 * Important incompatible changes:
58 - Autoconf 2.62 and Automake 1.11.1 or newer are now required for
59 bootstrapping Libtool. For using Libtool in your own projects,
60 Autoconf 2.59 and Automake 1.9.6 should still work.
61 - The fix_srcfile_path variable has been replaced by a more thorough
62 mechanism triggered by the to_tool_file_cmd variable.
64 * Changes in supported systems or compilers:
66 - Initial support for the Microsoft C/C++ Compiler, with help from
67 the compile script in unreleased Automake 1.12. Override the manifest
68 tool used to embed the manifest resource through the environment
69 variable MANIFEST_TOOL. Please note that the import library naming
70 has changed (from foo-2.lib to foo.dll.lib) from when the code lived
71 in its own git branch.
72 - Initial support for the NAG Fortran compiler on GNU/Linux.
76 - The `check-interactive' and `check-noninteractive' convenience make
77 targets now also work for the old testsuite.
78 - Warnings from Autoconf v2.67-36-g1e604ec about incomplete programs
79 passed to AC_*_IFELSE tests have been fixed.
80 - On IRIX, the test for -Wl,-exported_symbol now also works with gfortran.
82 New in 2.2.10 2010-06-10: git version 2.2.9a, Libtool team:
86 - On non-cygwin Windows systems, we no longer try to lookup the POSIX
87 format path recorded in $libdir of a pseudo-library when looking up
88 the location of the library with the native tools.
90 New in 2.2.8 2010-06-05: git version 2.2.7c, Libtool team:
94 - Bumped version number and promoted 2.2.7b release candidate to a full
97 New in 2.2.7b 2010-05-20: git version 2.2.7a, Libtool team:
101 - Libtool ships and installs man pages for libtool and libtoolize now.
102 - New libtool command line flag --help-all.
103 - New libtool command line flag --no-silent (with alternate spelling
104 --no-quiet). This flag (re)enables the default informational messages,
105 but has no effect on so-called "verbose" output messages.
106 - New libtool command line flag --no-verbose, which disables only
107 the extra "verbose" output messages and has no effect on the
108 default informational messages.
109 - New convenience make targets `check-noninteractive' to avoid long testsuite
110 runs on Windows with popup windows in the middle, and `check-interactive'
111 for the complement set of tests.
112 - New link mode flag -bindir to specify the location for installed PE DLLs.
113 - Wrapper scripts and wrapper executables for programs linked against
114 uninstalled shared libraries now support command-line options --lt-debug
115 and --lt-dump-script.
117 * Important incompatible changes:
119 - The wrapper command line option support described above introduces the
120 following incompatibility: the wrapper will remove any command line
121 options that begin with '--lt-*' from the argument list before launching
122 (uninstalled) programs. Any '--lt-*' option on the command line not
123 recognized by the wrapper will result in an error.
124 - The type of the symbol lists variables (lt_*_LTX_preloaded_symbols) has
125 been fixed in the manual and in a couple of tests to match the actual
128 * Changes in supported systems or compilers:
130 - Improved support for 64bit Windows (mingw64).
131 - Improved support for cegcc (Windows CE/PocketPC).
132 - Support for GNU/kOpenSolaris (kopensolaris*-gnu).
133 - Initial support for compilers on BlueGene BG/P.
134 - Improved support for Atari FreeMiNT.
135 - With binutils 2.19.50+, shared libraries can be built on AIX.
136 - Initial support for the Cuda Compiler Driver on GNU/Linux.
137 - Support for Haiku (i586-pc-haiku).
138 - Initial support for GCC link-time optimization (LTO) flags.
142 - Fix 2.2.6 regression that prevented using the libltdl macros together
143 with Autoconf 2.59 (`possibly undefined macro: LT_LIBEXT').
144 - Fix 2.2.4 regression that caused arguments with special characters
145 to be mangled by the compile wrapper for uninstalled programs on MinGW.
146 - libtool command line flag --verbose now also enables explicit
147 verbose output, in addition to its previous behavior of (re)enabling
148 only the default informational output. See New Features, --no-silent.
149 - Link tests are guarded by cache variables so they can be avoided for
150 bootstrapping purposes (e.g., when link tests are not possible).
151 - Argument mangling of execute mode has been improved (i.e., lessened).
152 - Fix 2.1b regression that caused nm to not be the default name lister.
153 The regression affected mainly (arguably broken) cross compiles.
154 - Fix long standing bug that caused compiler checks for Fortran and
155 C++ compilers to run twice.
156 - Link mode works around a parallel build failure on Darwin 9.6.0 due
157 to the `ar' `flock'ing an archive upon extraction, by protecting the
158 extraction of convenience archives with a lock.
159 - The Libtool macro files do not contain instances of __oline__ any more,
160 easing merges for configure scripts that are added to version control.
161 - Fix ancient bug where "-Wc," was turned into "$wl" (typically "-Wl,")
162 when using the compiler driver to link programs. Now "-Wc," is stripped
163 just as it is when linking libraries through the compiler driver.
164 - Symbol versioning works with the GNU gold linker now.
165 - Fixes for detection of shared library dependencies on MinGW systems.
166 - Fixed Sun compiler detection on Solaris with sunCC, sunf77 etc. names.
168 * Miscellaneous changes:
170 - The manual is distributed under the terms of the GNU FDL 1.3 now.
172 New in 2.2.6 2008-09-05: git version 2.2.5a, Libtool team:
176 - New lt_dloadvise_preload() call to set a hint that only preloadeded
177 modules can be opened.
178 - libtoolize no longer removes config.guess and config.sub, even when
181 * Changes in supported systems or compilers:
183 - Fixes for ifort on Darwin, and newer Intel compilers (icc 10, ifort 9)
185 - Fixes for cwrapper (cygwin/mingw) under -stdc=c99.
186 - Support cross compile of MinGW with Wine.
187 - Initial support for cegcc (Windows CE/PocketPC) cross compilation.
188 - Initial support for lf95 (Lahey Fortran 8.1) on GNU/Linux.
192 - Several testsuite issues have been fixed, thanks to user feedback.
194 - Fix 2.2 regression that caused argz symbols to be exported from
195 libltdl unrenamed on systems that do not have working argz.
197 - Revert "lt_dlopen(NULL) works on AIX again.". It was not the
200 - Diagnose '-L' arguments correctly.
202 - Libtool no longer tries to open devices as files in execute mode.
204 - Libtool no longer removes *.gcno profile information from GCC.
206 New in 2.2.4: 2008-05-04: git version 2.2.3a, Libtool team:
210 - New libtoolize option --no-warn, for users that want to continue to
211 use old libtool style without being nagged.
212 - Options --debug, --no-warn, --quiet and --verbose can be passed to
213 libtoolize through the environment variable LIBTOOLIZE_OPTIONS, for
214 cleaner interaction between the user and libtoolize when called by
219 - The documentation for lt_dlopenadvise showed the wrong type for
220 the lt_dladvise parameter.
221 - The public declarations for lt_dlhandle and lt_dladvise are now
222 incomplete struct types rather than void*, which means that nearly
223 all casting is eliminated allowing the compiler to provide more
225 - libtoolize no longer reports up-to-date files that it would have
226 copied, unless --force is passed.
227 - No longer reports that lt~obsolete.m4 needs to be added to aclocal.m4
228 when it is already there.
229 - When `aclocal' copied the libtool macros directly into `aclocal.m4'
230 (i.e. AC_CONFIG_MACRO_DIR is not being used), libtoolize no longer
231 reports that all macros need to be added to `aclocal.m4', and
232 diagnoses only the macro files that are missing or not up-to-date.
233 - libtoolize now advises use of AC_CONFIG_MACRO_DIR to keep matching
234 libtool macros in-tree where appropriate.
235 - libtoolize now advises use of `ACLOCAL_AMFLAGS = -I m4' (or
236 equivalent) where appropriate, and errors out when ACLOCAL_AMFLAGS
237 names a different directory to AC_CONFIG_MACRO_DIR.
239 New in 2.2.2: 2008-04-01: CVS version 2.2.1a, Libtool team:
243 - In compile mode, compiler output occurs in the user locale. This
244 feature has been present in 1.5.26 but not in 2.2.
246 * Changes in supported systems or compilers:
248 - Initial shared library support for AmigaOS4 on powerpc.
252 - Fix 2.2 regression in libltdl that causes memory corruption upon
253 repeated `lt_dlinit(); lt_dlexit()'.
254 - Fix 2.2 regression in libltdl that skipped the dlopen loader if
255 the system also supports other loaders (e.g., Cygwin, HP-UX).
256 - Fix 2.2 regression in that `libtool --mode=execute CMD ARGS' does not
257 transform ARGS that do not look like shell or C wrappers of libtool
259 - Fix 2.2 regression that kept cross-compiling to w32 from working.
260 - Several testsuite issues have been fixed, thanks to user feedback.
262 New in 2.2: 2008-03-01; CVS version 2.1c, Libtool team:
266 - argz.c, lt__dirent.c and lt__strl.c are correctly distributed with
267 parent projects using nonrecursive libltdl.
268 - libtoolize no longer tries to install libtool files when libltdl is
269 used in a non-autoconf parent package.
270 - Don't add the CXX tag to libtool when there is no C++ compiler, even
271 if AC_PROG_CXX sets a default g++ compiler where no such compiler
273 - make distcheck DISTCHECK_CONFIGURE_FLAGS=--disable-ltdl-install
276 New in 2.1b: 2008-02-01; CVS version 2.1a, Libtool team:
278 * Important incompatible changes and obsoleted features:
280 - Removed deprecated APIs from libltdl: lt_dlcaller_register,
281 lt_dlhandle_next, lt_dlhandle_find, lt_dlforeach, lt_dlmutex_register,
282 lt_dlmutex_lock, lt_dlmutex_unlock, lt_dlmutex_seterror,
283 lt_dlmutex_geterror, lt_dlmalloc, lt_dlrealloc, lt_dlfree.
284 - The Libtool and libltdl macros and the testsuite now assume a C89
285 environment, consequently do not test for headers such as string.h,
286 strings.h, memory.h any more.
287 - Fix regression in libltdl symbol exports on Cygwin. Side effect:
288 LT_GLOBAL_DATA and LT_SCOPE are now explicitly defined as
289 declspec(dllexport), bypassing auto-export logic on Cygwin.
290 This tracks existing behavior on MinGW.
291 - The libtool script has been optimized a bit for more modern shells.
292 This breaks use of the stdin file descriptor in libtool, and can
293 break if a different shell is used to execute the libtool script
294 than the one it was configured for.
295 - The macros AC_ENABLE_SHARED, AC_DISABLE_SHARED, AC_ENABLE_STATIC, and
296 AC_DISABLE_STATIC have been un-deprecated after deprecation in
298 - The macro LT_WITH_LTDL has been renamed to LTDL_INIT.
299 - Fixed a branch-1-5/HEAD regression to only link uninstalled libraries
300 statically with `-static'. In order to compensate for this, there
301 is a new link flag `-static-libtool-libs' to provide the previous
306 - Fix installation of libltdl so that it does not need Autoconf and
307 Automake installed, in order to be usable in another package. This
308 lifts the restrictions introduced in 1.9b.
309 - Default convenience or installable libltdl builds can optionally
310 be declared using new `convenience' or `installable' options to the
311 LTDL_INIT macro (as an alternative to individual LTDL_CONVENIENCE
312 or LTDL_INSTALLABLE invocations).
313 - New configure-time options to allow libltdl parent project builder
314 to choose between installed and shipped libltdl, when invoking
315 LTDL_INIT: --with-included-ltdl, --with-ltdl-include,
317 - New LT_CONFIG_LTDL_DIR macro to specify a different directory name
318 for a convenience libltdl.
319 - libtoolize has been completely overhauled.
320 - `libtoolize --install' now also installs `install-sh'.
321 - New libtoolize options: --non-recursive, --recursive, --subproject.
322 These options control the way libltdl is installed into a package by
323 libtoolize. The new recursive and non-recursive build modes for
324 libltdl don't require a subconfigure any more.
325 The Libtool package itself builds libltdl nonrecursively.
326 - The 'nonrecursive', 'recursive' and 'subproject' libltdl build
327 modes are given as LTDL_INIT options.
328 - New make variable LTDLDEPS for use in output_DEPENDENCIES.
329 - New multi-module-loader safe libltdl handle iteration APIs:
330 lt_dlhandle_iterate, lt_dlhandle_fetch, lt_dlhandle_map.
331 - New lt_dlinterface_register to maintain separation of concerns
332 between modules loaded by different libraries.
333 - New lt_dlopenadvise takes a new lt_dladvise type argument, which
334 lets the caller request local or global symbol visibility from the
335 module loader with lt_dladvise_local and lt_dladvise_global
336 respectively. If neither is given, or if lt_dlopen (or lt_dlopenext)
337 are called, then the system default module symbol visibility is used.
338 - The new lt_dladvise_init/lt_dladvise_destroy based APIs also allow
339 caller requests for a filename extension search with lt_dladvise_ext,
340 and for marking a module unloadable with lt_dladvise_resident.
341 - Allow shell special characters like `$' in source file names, but
342 not in object names, to enhance GCJ support.
343 - An entire new Autotest-based testsuite in addition to the old one.
344 Both testsuites have been made more useful for testing
345 cross-compilers. The new testsuite exposes many more issues, but
346 may also be a little rocky on exotic systems.
347 - In 1.9b, a new variable inherited_linker_flags has been added to the
348 libtool library files. This variable takes flags that should be
349 used by dependent libraries and programs, but that do not fit into
350 `dependency_libs' for both clarity and backward-compatibility.
352 * Changes in supported systems or compilers:
354 - Removed bitrotted support for xlc on Mac OS X.
355 - Detection of compiler wrappers distcc/ccache and $host_alias prefix.
356 - Basic support for PIE (position-independent executables).
357 - Support for DragonFly BSD, improved support for FreeBSD.
358 - Improved support for GNU/kFreeBSD and GNU/NetBSD.
359 - Support for Interix 3 (Windows SFU) and newer versions.
360 - Support for AIX 6.1.
361 - Improved support for UnixWare.
362 - Initial support for RDOS.
363 - Initial Support for FC (modern Fortran).
364 - Support for Portland Group compiler, the Sun compiler suite on GNU/Linux,
365 and initial support for the IBM compiler suite on GNU/Linux/ppc.
366 - Support for linux-dietlibc (`diet' as well as `diet-dyn', separately).
367 - Building libltdl with a C++ compiler has been undusted.
368 - On (AIX?,) HP-UX, and OpenBSD, hardcoding has been changed to prefer
369 rpath over absolute dependent library names. This fixes DESTDIR
370 installs, among others, on the non-HP-UX/PA systems.
371 - Use of C++ templates together with shared libraries has been
372 improved on some systems and with some compilers, but is still
373 ongoing work. Feedback is desirable here.
377 - Fix libltdl on static platforms.
378 - Search paths with GCC on multilib systems like x86_64 have been fixed.
379 - Fixed a regression that prevented use of libltdl without autotools.
380 - Fix error with -version-info on systems with version_type=none, such
382 - Fix symbol exporting for cases where command line length limits are
384 - Improve linking with C++ libraries on Solaris with Sun compiler.
385 - Fix installation of libraries that are required by installation
386 commands such as `ln' or `rm'.
387 - More robust parsing of mangled `.la' files inside libltdl, fixing a
388 possible overrun and a crash due to memory exhaustion.
389 - Fix compile command line for gcj on MinGW.
390 - Some configure variables have been renamed to fix caching:
391 lt_prog_compiler_pic_works to lt_cv_prog_compiler_pic_works
392 lt_prog_compiler_static_works to lt_cv_prog_compiler_static_works.
393 - Fix 1.9b regression: lt_dlopen(NULL) works on AIX again.
394 - Loads of smaller bug fixes.
397 New in 1.9f: 2004-10-23; CVS version 1.9e, Libtool team:
398 * Fix a regression in 1.9d, where ECHO was always set to 'echo' and the
399 backslash quoting tests were never run.
400 * Fix a regression in 1.9d, where progpath was used for --no-reexec before it
402 * Fix a regression in 1.9d, which required an installed automake to build the
403 bootstrapped tarball.
404 * Fix hanging bug on MinGW.
406 New in 1.9d: 2004-10-03; CVS version 1.9c, Libtool team:
407 * If non-pic objects were not compiled, and libtool is called in link mode,
408 libtool no longer silently creates an empty archive, but rather falls
410 * When compiling C glue code with $LTCC, libtool now saves the setting of
411 $compiler_flags from the C tag, and passes those flags to $LTCC.
412 * libtool no longer dies when concurrently creating directories with
413 `make -j' on multi-processor hosts.
414 * Return type, and name parameter of lt_dlloader_remove are no longer
416 * Name parameter of lt_dlloader_find is no longer 'const'.
417 * The API for the slist ADT has been updated: slist_new has been replaced
418 by slist_box; slist_unbox and slist_sort are new; the footprint of
419 slist_remove and slist_fnid have changed; SListCallback and SListCompare
420 types have been exchanged. See libltdl/slist.c for documentation.
421 * libltdl is C89 compatible again. lt_dlsymbol type removed, and lt_dlsymlist
422 structure changed to avoid using C99 flexible arrays.
423 * Support self dlopening for executables on cygwin and mingw.
424 * Improved support for linux-gnu/ia64.
425 * Initial support for s390x-ibm-tpf.
426 * Fixed some memory leaks in libltdl.
427 * Improved support for OpenBSD (use rpath instead of hardcoding absolute
430 New in 1.9b: 2004-08-29; CVS version 1.5a, Libtool team:
431 * The /^_?LT_[A-Z_]+$/ namespace is now reserved for Libtool's own macros.
432 If you have any shell variables in this namespace they will need to be
433 renamed. If you have any macros in this namespace please rename them to
434 prevent any possible future clash with libtool supplied macros.
435 * New LT_PREREQ macro for specifying minimum libtool requirement.
436 * New LT_INIT interface replaces AC_PROG_LIBTOOL, AC_ENABLE_SHARED,
437 AC_DISABLE_SHARED, AC_ENABLE_STATIC, AC_DISABLE_STATIC,
438 AC_ENABLE_FAST_INSTALL, AC_DISABLE_FAST_INSTALL, AC_LIBTOOL_DLOPEN,
439 AC_LIBTOOL_WIN32_DLL and AC_LIBTOOL_PIC_MODE. Use autoupdate to modernise
440 your configure.ac files after installing this release.
441 * New LT_LANG interface to enable libtool support for a specific language.
442 * Language support is now only included if your configure.ac enables it,
443 either through a call to AC_PROG_CXX etc. or LT_LANG.
444 * The libtool script will complain if it was built from mismatched ltmain.sh
445 and libtool m4 macro versions.
446 * Like automake, libtoolize no longer installs config.guess and config.sub by
447 default. Use new --install option to get the old behaviour.
448 * libtoolize no longer supports the --ltdl-tar option.
449 * libtool script is now created by config.status. Instead of interrogating
450 `./libtool' from configure.ac after calling AC_PROG_LIBTOOL, use the
451 variable names directly.
452 * libltdl is no longer a self-contained package, and shares configury with
453 the top level directory now.
454 * Shared objects (.lo) are no longer created when `-static' is passed in
456 * New compile mode option `-shared' prevents creation of static objects (.o).
457 * New link mode option `-shared' creates only shared libraries at link time.
458 * If you configure libtool with --disable-shared (or if libtool does not
459 support shared libraries on your platform) trying to build a library using
460 `-shared' is a fatal error.
461 * New link mode option `-weak' tells libtool when not to propogate dependency
462 libraries from dlpreopened modules.
463 * libtoolize installs libtool.m4, (ltdl.m4 if used,) and various supporting
464 m4 definitions to AC_CONFIG_MACRO_DIR.
465 * Mode inferrence removed, shorthand for choosing modes added.
466 * Specifying -allow-undefined is now an error.
467 * Speed up max_cmd_len check.
468 * libltdl can now preopen modules from within a library, and libtool will
469 accept -dlpreopen options when linking either a shared library or a
471 * New function in libltdl: lt_dlhandle_find provides access to module handles
473 * New function in libltdl: lt_dlpreload_open opens all preloaded modules.
474 * libltdl no longer loads shared libraries with global symbol resolution,
475 this caused problems when the symbols were intended to be overriden further
476 up the stack; it is also not recommended practice.
477 * New function in libltdl: lt_dlhandle_first, primes handle iterations (using
478 lt_dlhandle_next) to filter by module interface.
479 * libltdl no longer tries to support multi-threaded programming with
480 lt_dlmutex_register(), which was unusable with POSIX threads anyway.
481 The symbols are deprecated but exported for backwards compatibility.
482 * libltdl no longer uses lt_dlmalloc, lt_dlrealloc and lt_dlfree. The symbols
483 are still exported for backwards compatibility.
484 * The lt_dlinfo struct has a new module field that can be used by dlloaders.
485 * libltdl no longer supports pre-c89 compilers. Some of the pre89 portability
486 functions had compile time bugs in them anyway, so you guys can't have been
488 * make install now deletes preexisting $prefix/share/libtool before installing
490 * Extracting symbols from an import library on cygwin and win32 now works.
491 * Initial support for amigaos-ppc.
492 * Improved support for OpenBSD.
493 * Support for Intel C++ version 8.0.
494 * New support for IBM's xlc and xlc++ on Mac OS X.
495 * Finished support for QNX RTOS.
498 New in 1.5.8: 2004-08-07; CVS version 1.5.7a, Libtool team:
499 * Support for Intel C++ version 8.0.
500 * Improved support for OpenBSD.
501 * Support for xlc on Mac OS X.
502 * Better support for zsh as /bin/sh.
503 * Much faster check for command line length on all BSD systems.
504 * Better Mac OS X/darwin support.
507 New in 1.5.6: 2004-04-11; CVS version 1.5.5a, Libtool team:
508 * Installs libltdl files properly in $prefix/share/libtool/libltdl. 1.5.4
509 did not install them at all.
510 * libltdl correctly guesses the extension for loadable modules again.
512 New in 1.5.4: 2004-04-03; CVS version 1.5.3a, Libtool team:
515 New in 1.5.2: 2004-01-25; CVS version 1.5.0a, Libtool team:
516 * lt_dlrealloc is an official part of the libltdl API.
517 * --tag, --silent and --debug options are preserved and reused when libtool
518 calls itself for relinking etc.
519 * `-pthread' and similar options are honoured when linking shared libraries.
520 * -no-suppress in compile mode shows compiler output for both PIC and non-PIC
522 * New link mode option `-precious-files-regex' to prevent accidental removal
523 of files you want to keep, such as test coverage data, from the temporary
525 * Directories specified in /etc/ld.so.conf are no longer hardcoded on GNU/Linux.
526 * Recognises the 'R' symbol type on Solaris so read-only symbols can be
530 New in 1.5.1: 2003-??-??; CVS version 1.5.0a, Libtool team:
531 * lt_dlrealloc is an official part of the libltdl API.
534 New in 1.5: 2003-04-14; CVS version 1.4e, Libtool team:
535 * First stable release of multi-language architecture.
536 * libtool and libltdl support for Mac OS/X.
537 * libltdl will now use cygwins dlopen API instead of always forcing
539 * Support auto-import patch to binutils on cygwin for much improved dll
543 New in 1.4.3: 2002-10-13; CVS version 1.4.2a, Robert Boehne:
544 * The libltdl subdirectory now bootstraps correctly with Automake 1.5.
545 * srcdir != builddir builds with Automake 1.5 work correctly.
546 * Support for mips-compaq-nonstopux.
547 * New command line argument, --preserve-dup-deps prevents removal of
548 duplicate dependent libraries.
550 New in 1.4d: 2002-01-07; CVS version 1.4c, Libtool team:
551 * Help strings display correctly again.
552 * Better error messages when library linking fails.
553 * Better error messages from libltdl when loading fails.
554 * Better search path management in libltdl with `lt_dlinsertsearchdir' call.
555 * Support /lib/w32api in recent cygwin releases.
556 * Support cross compilation to mingw.
557 * Support for .rc files (Windows resource compiler).
558 * Improved handling of mingw gcc.
559 * Improved handling of $PATH with entries containing spaces.
560 * Improved support for linking with gcc on aix4* and aix5*.
561 * Improved support for GCC 3.0.
562 * Initial support for QNX RTOS, UnixWare 7 and OpenUNIX 8.
563 * Bug fixes to the OpenBSD port.
566 New in 1.4.2: 2001-09-11; CVS version 1.4.1a, Gary V. Vaughan:
567 * libltdl now builds on solaris again
568 * diagnose and warn about not-quite-working combinations of gcc and
570 * Improved OpenBSD support.
571 * Improved cygwin support.
574 New in 1.4.1: 2001-09-03; CVS version 1.4.0a, Libtool team:
575 * Better error messages from libltdl when loading fails.
576 * Don't leave here-doc files behind.
577 * Improved support for OpenBSD.
578 * Libtool will build with autoconf-2.50 and higher.
579 * Plug memory management bugs in libltdl.
580 * Prefer shl_load to dlopen for better operation on HP-UX.
582 New in 1.4b: 2001-07-09; CVS version 1.4a, Libtool team:
583 * Now bootstraps with autoconf-2.50 and automake-1.4-p4.
584 * Always try to build at least a static lib, even if both static and
585 shared libs were disabled.
586 * Full support for C++ compiler.
587 * Support for GNU gcj compiler.
588 * libltdl can now load all modules in a given path according to user
589 supplied criteria with `lt_dlforeachfile' call.
590 * Improved support for AIX ia64, djgpp, HPUX, hurd, OpenBSD, sco3.2*.
591 * Internal mutex handling no longer has namespace clashes on NCR MP-RAS.
592 * New pdemo and tagdemo tests.
595 New in 1.4: 2001-04-25; CVS version 1.3e, Libtool team:
599 New in 1.3d: 2001-04-02; CVS version 1.3c, Libtool team:
600 * ltconfig is no more. Generation of libtool happens directly from
602 * Multithread safe with lt_dlmutex_register callback registration.
603 * New -no-install flag to avoid the use of executable wrapper scripts.
604 * New --with-pic, -prefer-pic and -prefer-non-pic flags to control
605 the generation of PIC/non-PIC code.
606 * Support for hardcoding run-time paths (-R) into libraries.
607 * Support -dlopen and -dlpreopen for libraries.
608 * Libtool now allows you to link shared libraries against static code.
609 * New functions in libltdl:
610 lt_dlgetinfo, lt_dlhandle_next and lt_dlforeach provide access to module
611 specific data in handles.
612 lt_dlcaller_register, lt_dlcaller_set_data and lt_dlcaller_get_data provide
613 management for user storage of per module data.
614 lt_dlloader_next, lt_dlloader_name, lt_dlloader_find, lt_dlloader_add and
615 lt_dlloader_remove can be used for adding new types of module loaders.
616 lt_dladderror, lt_dlseterror integrate user module loaders with lt_dlerror.
617 * "-Xcompiler" and "-Wc," does now work in compile mode, too.
618 * Support recent dlltool formats.
619 * Start of support code for cross-compiling to win32.
620 * libltdl can now be built as a dll with win32.
621 * m4 macros needed to configure libltdl split out into libltdl/ltdl.m4.
622 * New port to NEWS-OS Release 6.
623 * Improved support for darwin (rhapsody), mingw32, NetBSD, Compaq Tru64 V5.0
624 and Digital Unix V4.*.
625 * Initial support for ia64 linux.
626 * Initial support for a.out freebsd shared libs.
627 * Initial support for Paul Sokolovsky's pw32 POSIX over win32 layer.
628 * Many bugfixes (especially in libltdl)
630 New in 1.3b: 1999-07-02; CVS version 1.3a, Libtool team:
631 * Complete inter-library dependencies support. It's now possible
632 to link libtool libraries against other libtool libraries.
633 * Libtool is able to find already-installed libtool libraries,
634 even if they were moved out of their installation directory.
635 * New "-Wc,flag" and "-Xcompiler flag" flags to pass flags
636 directly to the compiler
637 * New "-Wl,flag" and "-Xlinker flag" flags to pass flags
638 directly to the linker
639 * New "-no-fast-install" flag to selectively disable fast-install mode.
640 * Support for installing stripped libraries using GNU strip (install -s).
641 Automake >= 1.5 will install stripped libraries with "make install-strip".
642 * Allow linking shared libraries against static ones
643 on FreeBSD, GNU/Linux, GNU Hurd and Solaris
644 * Support for linking DLLs on Win32
645 * New `clean' mode to delete uninstalled files.
646 * New demos and tests
649 New in 1.3.5: 2000-05-27, CVS version 1.3.4a, Libtool team:
650 * Support for mac OS X (rhapsody).
651 * Support for *-sequent-sysv4.
652 * Support for Cygwin-1.1.0.
653 * Support recent dlltool formats.
656 New in 1.3.4: 1999-12-08, CVS version 1.3.3a, Libtool team:
657 * Support for Compaq Tru64 V5.0.
658 * Improved support for Digital Unix V4.*.
659 * Improved support for NetBSD, FreeBSD and Unixware.
660 * Many fine bugfixes.
662 New in 1.3.3: 1999-07-02, CVS version 1.3.2a, Libtool team:
663 * New `-dlpreopen force' flag to ensure that
664 lt_preloaded_symbols is always defined.
665 * Work around self-dlclose bug in FreeBSD 3.1.
666 * Expand convenience libraries when creating reloadable objects.
667 * Do not forget to import -L flags of convenience libraries.
668 * Do not pass -whole-archive or equivalent to symbol extractor.
669 * Create directory to expand convenience libraries only when needed.
670 * Improved support for Cygwin, DJGPP and NetBSD
673 New in 1.3.2: 1999-05-26, CVS version 1.3.1a, Libtool team:
674 * Avoid circular links of objects and libraries.
675 * Look for dlerror when dlopen was found in -ldl (typo).
676 * Disable shared libraries with broken GNU ld on Solaris.
678 New in 1.3.1: 1999-05-21, CVS version 1.3.0a, Libtool team:
679 * Documentation improvements; recommend automake users to insert libtool.m4
681 * AC_LIBLTDL_CONVENIENCE and AC_LIBLTDL_INSTALLABLE now set INCLTDL.
682 * New port to NEC UX/4800.
683 * cygwin-b20.1 passes all tests.
684 * Slightly improved BeOS support.
685 * Many AIX 4.3.2 test failures have gone.
686 * Pass unknown -L arguments through to the linker (for -LANG:* support).
687 * Close a security hole with mode 777 directory during libltdl installation.
688 * Fixed the infamous ``ifelse'' bug in libtool.m4
690 New in 1.3: 1999-04-29, Libtool team:
691 * This is just a summary of the changes since 1.2.
692 See the news of intermediate alpha releases below for details.
693 * Support for convenience archives.
694 * New maintainers. Anonymous CVS and home page at gnu.org.
695 * Portable dlopening interface with libltdl, new -module flag.
696 * Correctly link installed libtool libraries into programs and other
697 libtool libraries. Linking of uninstalled libtool libraries into
698 libraries is under development for 1.4.
699 * Do not drop library dependencies on platforms that allow them.
700 * Linking with uninstalled libraries no longer picks installed ones by
702 * Use libraries from the build tree when running uninstalled
703 executables (may require double linking).
704 * Allow developers to optimize for build-tree executions.
705 * Support -export-symbols-regex for controlled symbol exporting.
706 * Support -R to hardcode directories in library search paths.
707 * New ports, demos and tests. Lots of improvements and bug fixes.
709 New in CVS version 1.2g, Libtool team:
710 * AM_PROG_LIBTOOL is smaller and faster
711 * AC_LIBTL_L_WIN32_DLL is required in configure.in for libtool to
712 attempt to build dlls on win32 hosts
713 * Shared libraries on AmigaOS up to version 4 are now disabled
714 since they don't meet libtool's requirements for shared libraries
715 * -L supports now relative directories
716 * Libltdl has a new license: LGPL with a special exception
717 * Libltdl can be used as stand-alone package
718 * dlopen support for BeOS
719 * Partial support for Motorola System V 4
720 * Improved support for AIX, BeOS, Cygwin, DJGPP, DU, IRIX and HP/UX
721 * Documentation updates
725 New in 1.2f: 1999-03-15; CVS version 1.2e, Libtool team:
726 * libtool will correctly link uninstalled libraries into programs
727 and prefer uninstalled libraries to installed ones
728 * Library paths that are in the system default run-time search path
729 are no longer hardcoded into executables.
730 * New fast installation mode, which links the final executable
731 in order to avoid relinking during installation.
732 Programs in the build-tree are relinked when executed.
733 * New AC_DISABLE_FAST_INSTALL macro to set the default for
734 the fast-install mode to disabled
735 * New -export-symbols-regex flag, to export symbols selectively by
737 * Support -R for specifying run-time path of programs and library dependencies
738 * New -avoid-version option to avoid versioning for libraries
739 * libtool module names no longer need to have a "lib" prefix
740 (requires automake 1.4).
741 * New -thread-safe flag, to build thread-safe libraries
742 * Major improvements in libltdl: API documentation, installable version,
743 support for module search paths, support for lt_dlopen(0),
744 can be embedded into packages as a tar file (libltdl.tar.gz),
745 dynamic buffer allocation and buffer overflow checks,
746 new macro LTDL_SET_PRELOADED_SYMBOLS() which must be used in the
747 main program, dynamic memory allocation functions are user-defineable
748 * New AC_LIBLTDL_CONVENIENCE and AC_LIBLTDL_INSTALLABLE macros, to select
749 convenience and/or installable versions of libltdl.
750 * libltdl is now built and installed unless --disable-ltdl-install
751 * New "-dlopen self" flag for dlopening the executable itself
752 * New AC_LIBTOOL_DLOPEN macro to check for dlopen support,
753 required if you use -dlopen or -dlpreopen
754 * If libtool could not satisfy all dependencies of a module
755 it will only build a static version of it
756 * dld_preloaded_symbols was renamed to lt_preloaded_symbols
758 * Improved support for FreeBSD, AIX, IRIX, OSF, SysV 4.3, HP/UX, DJGPP
759 BSD/OS 4.x and NetBSD
760 * In order for libtool to attempt to link a shared library (dll) on win32
761 platforms, you must pass the -no-undefined flag to libtool in link mode.
762 * The path to GNU ld now works on cygwin-b18 to cygwin-b20.2 at least.
763 * Support for IRIX library versioning.
764 * New demos and tests
767 New in 1.2d: 1998-12-16; CVS version 1.2c, Libtool team:
768 * libtool will correctly link already-installed libraries into programs.
769 * New -module flag, to create loadable modules.
770 * New libltdl, a small library for portable dlopening of modules.
771 It is still undocumented, but you can already find some examples in:
772 * New mdemo directory, with tests of -module and dlopening examples.
773 Be aware that libltdl is only known to work on a few platforms such as
774 GNU/Linux and Solaris2. Some mdemo tests are known to FAIL on several
775 other platforms; please ignore these failures by now (or work to fix
777 * Inter-library dependencies patch finally integrated, but there's
778 still much porting to do. See PORTING for details (some plans for the
779 future in mail/deplibs in the CVS tree).
780 * New option -export-symbols to control symbol exporting when possible.
781 * Fixed -export-dynamic problem with C++ programs in egcs 1.1.
782 * New dlpreopen structure.
783 * libtool now supports `-c -o' and subdirectories in sources and
784 target object names even in platforms whose compilers do not support
785 this. In this case, file locking occurs to avoid problems with
787 * New `echo' variant that should fix most problems with long command
788 lines and broken printf programs.
789 * Support for DG/UX, UnixWare 7.x and FreeBSD 3.0, and improved
790 support for Microsoft Windows
792 * We now have anonymous CVS access to GNU libtool. CVSROOT is
793 :pserver:anoncvs@anoncvs.gnu.org:/gd/gnu/anoncvsroot. The password
794 is empty. The directory is libtool. Check our home-page at
795 http://www.gnu.org/software/libtool/libtool.html for details.
796 * Alexandre Oliva, Thomas Tanner and Gary V. Vaughan have taken over
797 the maintenance of libtool.
798 * Arguments to ltconfig have been changed to allow creation of a
799 libtool C program, totally unusable as of this release.
801 New in 1.2b - 1998-07-01, Gordon Matzigkeit:
802 * Libtool needs a new maintainer, since Gordon Matzigkeit has quit.
803 If you think you can do the job, send mail to bug-libtool@gnu.org.
805 * Support for libtool convenience archives.
807 New in 1.2a - 1998-04-19, Gordon Matzigkeit:
809 * ltconfig accepts an `--output' option to specify the name of the
811 * New `--debug' flag to turn on shell script tracing for libtool,
812 libtoolize, and ltconfig.
813 * Added `libtool --config' to print out all configuration variables.
814 * Support for *-*-hpux11*.
816 New in 1.2 - 1998-03-20, Gordon Matzigkeit:
817 * Minor bug fixes to provide a stable public release.
818 * Libtool no longer cseses Solaris printf to barf due to silly
819 2110-byte static buffers.
821 New in 1.1 - 1998-03-08, Gordon Matzigkeit:
823 * http://www.profitpress.com/libtool/ is libtool's homepage.
824 * `AM_PROG_LIBTOOL' supports turning shared or static libraries off
825 with the `--enable-shared=PKGS' and `--enable-static=PKGS' configure
826 flags. See (libtool)AM_PROG_LIBTOOL.
827 * Use the `AM_DISABLE_SHARED' or `AM_DISABLE_STATIC' macros if you
828 wish to modify the default behaviour of `AM_PROG_LIBTOOL' for your
830 * New rules for `AM_PROG_LD' to use gcc's `-print-prog-name' flag in
831 order to find ld, if possible.
832 * Suppress duplicate compiler output during `compile' mode.
833 * Deleted `dlname' mode. Dlopen applications should only use the
834 runtime search method described in (libtool)Finding the dlname.
835 * Experimental support for dynamically loaded modules, even on
836 static-only platforms, via new `-dlopen' and `-dlpreopen' link
838 * `compile' mode honours the `-static' flag to prevent libtool
839 from building PIC objects.
840 * New `execute' mode to support debugging uninstalled libtool
841 libraries and executables.
842 * `-allow-undefined' is now the default. You can use `-no-undefined'
843 to declare that a shared library is completely self-contained.
844 * Inter-library dependencies are automatically handled when linking
845 against an uninstalled `.la' file.
846 * New `-all-static' flag to prevent any dynamic linking. The regular
847 `-static' flag now just prevents dynamic linking of libtool libraries.
848 * New `-release' flag to encode release numbers into libtool
849 libraries. This breaks binary compatibility, but is useful for
850 libraries whose interfaces change very frequently. See
852 * The `-rpath' flag can be used to hardcode absolute directories when
853 linking executables using libtool.
854 * New robust quoting code to handle any metacharacters passed in
855 arguments to libtool commands.
856 * Full support for broken collect2 on AIX 3. Shared libraries
857 can now be built with all working versions of GCC on AIX.
858 * Shell script speed optimizations for old and buggy /bin/sh systems,
859 such as HP-UX 9 and SunOS 4.1.4.
860 * Maybe use `_libs' as a temporary libtool directory instead of `.libs'
861 in order to cope with MS-DOS filenames.
862 * Portability fixes for Windows NT.
863 * Refuse to create libtool libraries that don't begin with `lib'.
864 This allows us to correctly handle OSes that don't have the `lib'
865 prefix by default, such as OS/2.
866 * Support for *-*-amigaos*, *-*-os2*, *-*-sysv4.2uw2*, and *-*-uts4*.
868 New in 1.0 - 1997-07-08, Gordon Matzigkeit:
870 * Better configuration test to find the system linker. The old test
871 was failing because people frequently install GNU ld, but don't
872 necessarily configure GCC to use it.
873 * Automake support for Libtool now uses the LTLIBRARIES primary. See
874 the Automake documentation for more information.
875 * Added new `--disable-static' flag to disable building static
876 libraries on platforms that have shared libs.
877 * New `-allow-undefined' link flag to build shared libs that contain
878 references to unresolved symbols.
879 * Removed all support for creating static-only libraries.
880 * Basic support for dynamically loaded modules: new `-export-dynamic'
881 linking flag and corresponding `dlname' mode.
882 * New `--features' flag to display configured libtool attributes.
883 * Added support for installing libtool objects, both in absolute and
884 relative directories.
885 * Support *-*-linux-gnu* as an alias for *-*-linux*.
886 * Support for *-*-openbsd* and *-*-freebsd3*.
888 New in 0.9 - 1997-02-03, Gordon Matzigkeit:
890 * The libtool demo now uses the libm cos(3) function, to demonstrate
891 inter-library dependencies.
892 * The PLATFORMS file has been moved to doc/platforms.texi.
894 New in 0.8 - 1997-01-26, Gordon Matzigkeit:
895 * Bug fixes, and more documentation.
896 * Basic support for other language compilers (C++, Fortran, and
897 preprocessed assembler).
898 * Libtool is now more persistent when linking with the `-static'
900 * New test for hardcoding system linkers, to verify that libtool
901 neither creates incorrect binaries, nor takes unnecessary
902 precautions while linking against uninstalled shared libraries.
903 * For clarity, the demo subdirectory no longer uses ansi2knr, and has
904 been rewritten to avoid ANSI-only constructs.
905 * Support for *-*-irix5, *-*-irix6*, and *-*-sco3.2v5*.
907 New in 0.7 - 1996-12-08, Gordon Matzigkeit:
908 * Total rewrite of libtool, along with a new model for library building.
909 * Completely rewritten documentation for the new paradigm.
910 * Sane handling of broken system linkers, such as the ones on AIX
912 * configure mode is now a separate program, `ltconfig'
913 * The libinfo helper script has been incorporated into the main
915 * Automatic mode guessing, based on the command line.
916 * Full support for Automake 1.2 (including ansi2knr features).
917 * Support to create reloadable objects using link mode.
918 * Support for new `-static' linking flag.
919 * Support for stripping libraries during installation.
920 * Library version information is now passed on the command line, not
921 through a version file.
923 Version 0.6 was never released.
926 * Disabled install-progs until next version, when it will be correctly
928 * Clearer library versioning documentation. See (libtool)Versioning.
929 * Renamed gm_PROG_LIBTOOL to AM_PROG_LIBTOOL
930 * Libtool now creates pseudo-objects named foo.lo and pseudo-archives named
931 libfoo.la instead of foo.o and libfoo.a. See the documentation.
932 * libtool compile doesn't interfere with user CFLAGS if they don't
933 conflict with the current objtype. From Karl Berry.
934 * Created new libinfo helper script.
935 * libversion.in files are obsolete -- libtool uses libinfo to read the
937 * Libtool is better at finding its config file and helper scripts.
938 * Support for *-*-gnu*
941 * Bug fixes and new regression tests
942 * On unsupported configurations, ``libtool configure'' demotes OBJTYPES to
943 `standard' instead of aborting
944 * Added new object type, `t', for tcov(1) support
945 * Support for *-*-aix3*, *-*-aix4*, *-*-hpux10*, *-*-osf3*, and *-*-solaris2*
948 * Bug fixes and new regression tests
949 * Added new uninstall-libs mode
950 * Added a host argument to configure mode
951 * Fixed debugging/hyper-optimizing flags conflict (from Karl Berry)
952 * Support for --no-whole-archive when needed by GNU ld (from Ulrich Drepper)
953 * Implementation of --enable-linktype, --enable-profile, --enable-shared,
954 --enable-static in gm_PROG_LIBTOOL macro
955 * New `libtoolize' program (modeled after GNU gettext's `gettextize') to help
956 conversion to libtool
957 * New ABOUT-LIBS document for inclusion with libtool-supported packages
960 * Support for *-*-linux
961 * Better checking for GNU ld
962 * Reimplemented the config file so that it corresponds more closely to the
963 variables listed in (libtool)Porting Libtool.
964 * Reimplemented the shared library version scheme. See (libtool)Versioning.
965 * Replaced `--config-file' and `--version-file' options with `--confdir'
966 * Added new install-libs and install-progs modes
969 * First release of libtool
970 * Support for: *-*-freebsd*, *-*-netbsd*, *-*-sunos4*, *-*-ultrix4*
972 Copyright (C) 1996, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005,
973 2006, 2007, 2008, 2009, 2010 Free Software Foundation, Inc.
975 This file is part of GNU Libtool.
977 Copying and distribution of this file, with or without modification,
978 are permitted in any medium without royalty provided the copyright
979 notice and this notice are preserved. This file is offered as-is,
980 without warranty of any kind.