* THANKS: added Ossama Othman
* doc/libtool.texi: documented the new `clean' mode
* ltconfig.in: set need_version=no on OSF (reported by
Marcus Sundberg <mackan@stacken.kth.se>)
* ltmain.in: allow absolute non-existant -L paths,
always use output_objdir instead of objdir for temporary files,
delete generated temporary symbol lists,
don't add .la twice in the pseudo-library header,
implemented and documented clean mode (deletes libraries,
programs and object files and the files associated with them),
if build_libtool_libs=no and no static library is available,
try to link the program against the shared library,
don't add a statically linked library to the dependency_libs
* ltmain.in (help uninstall): added a missing backslash
after echo (reported by Ossama Othman)
which links to object files we must create. Do not test for empty
pic_flag to create such links. Use objext when searching for
object files extracted from convenience library.
* ltconfig.in (cygwin*, file_magic_cmd): Use autoconf-located target
objdump tool. Track OBJDUMP like DLLTOOL and AS.
* ltconfig.in (cygwin*, deplibs_check_method): Accept
"architecture: i386" as optional suffix, for it is printed on a
separate line sometimes.
* ltmain.in (cygwin*, ltdll.c): Wrap DllMain declaration in extern "C".
* ltmain.in (deplibs_check_method=file_magic): Redirect stderr to
/dev/null, to suppress error messages from target objdump.
default, but set to yes by -static and -all-static. Used instead
of build_libtool_libs to decide whether to use a shared or static
version of a library, when both versions are available.
* libltdl/ltdl.c (shl_close, shl_sym): use (shl_t *) instead of shl_t
* ltconfig.in (check for gcc): removed a bogus line,
check for shl_load in libdld
* ltmain.in: added a warning to the header of the .la file
to warn users against deleting the file,
link shared against static libraries if
deplibs_check_method == pass_all
an exec in the same if construct; otherwise the inline document
may not be removed.
* ltmain.in (--fallback-echo): Likewise.
Reported by John David Anglin <dave.anglin@nrc.ca>
(before, after): Create them within ../tests.
(libtool): Set to `/bin/sh ./libtool' by default, but use LIBTOOL,
SHELL and top_builddir from the environment if available. For dry
runs, use "$libtool -n".
* tests/Makefile.am (CLEANFILES): Added before and after.
* ltmain.in: Do not create links to object files in dry runs.
* doc/libtool.texi: removed hardcode_into_libs documentation
* libtool.m4: some DJGPP fixes
* ltconfig.in: ditto, reverted one of my previous patches: we need
to check for NM, removed the hardcode_into_libs support since
no platform seems to support it
* ltmain.in: some DJGPP fixes, removed the hardcode_into_libs support
documented dryrun.test and depdemo*
* ltmain.in (lt_preloaded_symbols): dry-run mode bugfix
* tests/dryrun.test: new test to check whether the dry-run
mode works properly
* libtool.m4: check for main in libm instead of cos
* ltmain.in: cosmetic fixes, don't try to link libraries only once
(although it's not necessary on many platforms and looks ugly...),
library was linked with the same convenience library by
uniquifying the extract directory. It is now named after the new
library *and* the old one, and lives in the objdir of the new one.
the deplibs check is now optional
* libltdl/configure.in: read libtool --config only once,
merged AC_SYS_SYMBOL_UNDERSCORE+AC_SYS_NM_PARSE from libtool.m4
* libtool.m4: AC_SYS_SYMBOL_UNDERSCORE+AC_SYS_NM_PARSE were not
used, lt_dlopen and silent may be empty, AC_SYS_LIBTOOL_CYGWIN
no longer necessary
* ltconfig.in: NM is already checked in libtool.m4,
* ltmain.in: always link all static dependency_libs
* tests/Makefile.am: added deplibs.test
* tests/demo-exec.test, demo-inst.test: removed hell0
* tests/deplibs.test: new test to test the deplibs_check_method
* libtoolize.in: add the libtool scripts to libltdl.tar.gz
* libtool.m4: don't AC_SUBST(USE_SYMBOL_UNDERSCORE),
AC_CHECK_LIBM sets LIBM, AC_LIBLTDL_INSTALLABLE doesn't work
when libltdl is already installed
* *demo/Makefile.am: use LIBM
* *demo/configure.in: AC_SUBST LIBM
* libltdl/configure.in: use ac_cv_sys_symbol_underscore instead of
USE_SYMBOL_UNDERSCORE
* ltconfig.in: added link_all_deplibs variable
* doc/libtool.texi: document it
* ltmain.in: always search for libname.la - don't eval libname_spec,
when linking libraries against static ones just print a warning
and add them to dependency_libs, add -lc before deplibs,
always link all dependencies of a static library or if
link_all_deplibs is yes, hardcode library paths if
hardcode_into_libs is no, don't link against dependency_libs
that already are deplibs
from 1999-03-25; Gary's delay_variable_subst patch from 1999-02-19
obviates it. Keep only quoting of $PATH, for uniformity with
other systems that already did it
* TODO: comments on hardcoding paths into libraries; problem
with shell meta-characters in filenames
* README: updated (BeOS support, no longer shared libraries
support for AmigaOS), cleanups, we have now two mailing lists
* REAMDE-alpha: autogen -> bootstrap, we have now two mailing lists
* THANKS: added Xavier Pianet
* doc/PLATFORMS: BeOS works
* doc/libtool.texi: we have now to two mailing lists,
updated -dlopen self documentation, documented libltdl's license,
put each author in a separate line,
inter-library dependencies on uninstalled libtool libraries are
now supported, cleanups and minor corrections
* libltdl/COPYING.LIB: new file
* libltdl/ltdl.[ch]: added special exception to the LGPL license
* libtool.spec: removed, it was outdated
* Makefile.am: removed libtool.spec
* ltmain.in: use TMPDIR when possible, create a subdirectory
in the temporary directory, added -export-symbols-regex to the help,
its expansion the first time *_cmds variables are eval'ed. Modify
$show within loops that eval them so as to expand variables
* ltconfig.in (*_cmds): quote $ so that they're not expanded by
the first eval
* doc/PLATFORMS: Erez Zadok reported that libtool works on bsdi 4.0.1
* doc/libtool.texi (libltdl): libltdl supports BeOS
* libltdl/ltdl.c: shlib_ext was declared even if LTDL_SHLIB_EXT
didn't exist, partially reverted my previous patch: BeOS will
automatically search in ADDON_PATH
* ltmain.in: don't allow relative run-paths, fixed a typo in a warning,
ignore -dlopen self for libraries and objects,
only accept -L paths that exist, minor cleanups,
bugfix: add -lc for normal libraries, not convenicence libraries
removed offensive warnings/comments
* ltconfig.in: fast-install mode doesn't work for
hardcode_into_libs=yes
* ltmain.in: bugfix: "-dlopen self [-all]-static" wouldn't use
dlopen_self_static, automatically enable -export-dynamic when
using "-dlopen self", always make run-paths absolute,
ignore -lc only on platforms that don't have such a library,
cleanups in the ILD code, find even installed libtool libraries
that were moved, before generating the DLL-import library we need
to set libname, improved hardcoding of shlibpath for libraries,
don't generate an installable pseudo-library for convenience
libraries, bugfix: export_symbols would be removed immediately
before it is used
* NEWS: improved support for BeOS and Cygwin
* TODO: ILD branch was merged, all internal variables and macros
are now documented
* demo/Makefile.am: use $(LIBS) instead of -lm
* doc/libtool.texi: documented new variable hardcode_into_libs
and thread_safe_flag_spec, renamed all AM_ENABLE/DISABLE_* macros
to AC_*, documented AC_DISABLE_FAST_INSTALL and AC_LIBTOOL_DLOPEN
* libltdl/ltdl.c: added two new error messages (cannot_open_error,
cannot_close_error), use them where approriate,
BeOS support (thanks to Xavier Pianet), on BeOS search modules
additionally in ADDON_PATH
* libtool.m4: rewrote AC_CHECK_LIBM: BeOS and Cygwin don't have
libm and *-ncr-sysv4.3* requires libmw
* ltconfig.in: don't check for LoadLibrary, hardcode dlopen
configuration for BeOS and Cygwin
* ltmain.in: fix sourcing of .la files on Solaris
(patch by Raja R Harinath)
* NEWS: inter-library dependencies are now supported
* configure.in: add the depdemo subdirectory
* depdemo/*: new demo to demonstrate inter-library dependencies
* tests/depdemo*: new tests for depdemo
* ltconfig.in: added hardcode_into_libs (whether library paths
should be hardcoded into the libraries),
it currently defaults to 'no'
* ltmain.in: new internal 'relink' mode to relink libraries
on platforms with hardcode_into_libs=yes, save command line
arguments in libtool_args, accept relative -L directories,
ignore -lm on BeOS and Cygwin, always ignore -lc,
handle -l, -L and .la arguments later, always make the library
installation directory (-rpath) absolute, in relink mode don't
delete the not-relinked library and exit immediately after relinking,
try to find already-installed libtool libraries that were specified
using -l, support hardcoding of library paths into libraries too,
export shlibpath before linking libraries, and a lot of other
big changes that I don't want to describe here... please read
the source.
* merged Gary's Win32 code from the ILD branch:
* NEWS: Win32 DLLs are now supported
* TODO: removed .a library namespace clash for win32. It is
now resolved.
* ltconfig.in (cygwin, library_names_spec): removed $libname.a.
Creating a dll with libtool no longer creates an import library.
* ltconfig.in (extract_expsyms_cmds): Create $objdir if it does
not exist -- i.e. we need to generate import an import library
in a directory which has no libs of its own.
* doc/libtool.texi (old_archive_from_expsyms_cmds,
extract_expsyms_cmds): documented these new variables.
* ltconfig.in (extract_expsyms_cmds): New variable. Commands to
extract the exported symbol list from a dll.
(old_archive_from_expsyms_cmds): New variable. Commands to build
an old archive from the extracted expsyms list.
* ltmain.in: run the cmds in extract_expsyms_cmds and
old_archive_from_expsyms_cmds as necessary.
* ltconfig.in (cygwin, old_archive_from_new_cmds): no longer
required.
* ltconfig.in (cygwin, shlibpath_overrides_runpath): I'm not even
sure whether win32 honours the runpath at all when searching for
a dll to load! Anyway, when set to yes this prevents a gratuitous
warning.
* ltmain.in (deplib): The cygwin environment doesn't actually have
-lm, and although the linker fakes having one, specifiying it to
libtool will break ILD, so we ignore it when generating
dependencies.
* doc/libltdl.texi (linking with installed libtool libraries):
fixed typo
* doc/libltdl.texi (libltdl): added documentation for building
libtool modules and examples how to embed libltdl
* ltmain.in: don't ignore user-specified run-paths (fixed it
at the right place)
lists the system *run-time* search path. Listed directories are
not implicitly hard-coded into executables.
* ltmain.in: use it, but *never* discard -R flags
* doc/libtool.texi: document it
* NEWS: ditto
Reported by Bob Friesenhahn <bfriesen@simple.dallas.tx.us>
output of NM too
(global_symbol_to_cdecl): new variable; convert the output of
global_symbol_pipe to valid C declarations; on HP/UX, convert
text symbols to function declarations
* libtool.m4: similar modifications
* doc/libtool.texi: document new variable
* ltmain.in: use global_symbol_to_cdecl to generate lt_dlpreopened
symbols; avoid extracting symbol lists from dlpreopened files
twice; do not filter symbols from dlpreopened libraries
* TODO: fixed HP/UX dlpreopening problem
(AC_LIBTOOL_SETUP): if lt_dlopen=yes, add --enable-dlopen to
libtool_flags; drop --enable-dlopen-self
* ltconfig.in: perform all the dirty work of testing for dlopening
support, because we need platform-dependent equivalents for
-export-dynamic, for self dlopening, and -static, for static self
dlopening
(dlopen_self_static): new configuration variable that is set to
yes only if static programs can dlopen themselves
* ltmain.in (-static, -all-static): dlopen_self=dlopen_self_static
then translate them to the export_symbols format. Now it works,
but it appears to be needlessly extracting the symbol list from
dlpreopened libraries twice
* doc/libtool.texi (libltdl interface): removed the line which
promised that lt_dlopen will return NULL if it can't resolve all
symbols
* libltdl/Makefile.am, libltdl/configure.in: fixed build problem:
renamed the convenience library to libltdlc.la and the
installed version to libltdl.la
* ltmain.in (wrapper script): replaced the "T" suffix of the program
file name with a "lt-" prefix
* mdemo/Makefile.am: use libltdlc.la
* tests/Makefile.am, tests/demo-nofast.test: added demo to
test --enable-fast-install=no
need relink; in the other cases, set it to needless
* ltmain.in (fast_install): if needless, set relink_command empty
* doc/libtool.texi (fast_install, shlibpath_overrides_runpath):
document the new behavior
* demo/configure.in: use AC_LIBTOOL_DLOPEN
* libtool.m4: added AC_ENABLE/DISABLE_FAST_INSTALL macro
* ltconfig.in: added --disable-fast-install flag
* ltmain.in: partially reverted Alexandre's patch and implemented
on-demand linking in such a way that the old developer-friendly
linking style is optional,
don't hardcode library paths that are in the system search path,
fixed a typo in lib_search_path,
implemented -export-symbols-regex for programs
and rename it to $progdir/$program only when it's finished, to
avoid race conditions. We can still get the program linked
multiple times, if multiple instances are started simultaneously
and the program does not exist, but they are very unlikely to
interfere with each other. There's still a possibility that one
process removes the $program another has just created, and doesn't
replace it before the other tries to run it, in a system whose
`mv' is not atomic, so it will $rm then $mv, but so what? :-)
Locking files have been avoided to prevent dead-locks in case they
are left over after a reboot or crash.
just warn if it can't be removed; add wrapper code to test whether
the install-executable is newer than the build-executable, to
relink it when it appears to be out-of-date
when dlopening the executable
* libtool.m4 (AC_LIBTOOL_DLOPEN): removed the redundant "yes: "
prefix for lt_cv_dlopen, renamed lt_cv_dlopen_LIBS
to lt_cv_dlopen_libs (more consistent)
* ltmain.in: implemented -dl[pre]open self, necessary for
lt_dlopen(NULL), generation of exported symbols was broken
determines whether LD_LIBRARY_PATH or equivalent can be used to
override a hard-coded library search path; default to unknown
(linux-gnu*): set it to no
(solaris*, sunos4*): set it to yes
* ltmain.in (build_libdirs_flags, build_libdirs, build_rpath): if
shlibpath_overrides_runpath is not yes, arrange that wrapper
scripts create, on demand, programs that use uninstalled libraries
* doc/libtool.texi: document it
export_symbols_cmd.
(cygwin, mingw): Be sure to compile the ltdll.c object before
extracting the exported symbol list. Extract only the names
of the exported symbols from the def file [otherwise we might
run into trouble with -export-symbols-regex].
(archive_expsym_cmds): Regenerate the def file from the symbol
export list.
(delay_variable_subst): New sed expression to allow us to delay
evaluation of $foo in a double_quote_subst evaluated variable by
using $.
* ltmain.in (export_symbols_cmds): evaluate each ~ delimitted cmd
separately.
* doc/libtool.texi (libtool script contents): new paragraph to
explain the difference between _cmd and _cmds suffixes for
variable names.
(export_symbols_cmds): renamed from export_symbols_cmd.
used under win32 to extract a def file (symbol export list) from a
dll that has none. Code to use it might need to wait for the ILD
merge before it will be useful...
* autogen: only libltdl needs autoheader
* doc/libtool.texi (link mode): documented -export-symbols-regex
and updated -export-symbols
* doc/libtool.texi (script contents): documented
always_export_symbols, export_symbols_cmd, exclude_expsyms,
include_expsyms, dlopen and dlopen_self
more detailed description of need_lib_prefix
* ltconfig.in: a "'" was missing in the default value
of export_symbols_cmd
* ltmain.in: implemented -export-symbols-regex
* cdemo/foo1.c: renamed to foo.c
* libltdl/ltdl.c: eliminated lt_dltype, in presym_open():
search for @PROGRAM@ if filename == 0, in lt_dlopen():
fixed bug for filename == 0
* libltdl/ltdl.h: use __P macro for lt_dlmalloc/free
* libtool.m4: new macro AC_LIBTOOL_DLOPEN: checks for dlopen
and dlopen(NULL) support
* ltconfig.in: added new variables dlopen and dlopen_self,
--enable-dlopen[-self] flags for AC_LIBTOOL_DLOPEN
* ltmain.in: use dlopen[_self], dlpreopen files if there's no
dlopen support, build lt_preloaded_symbols only if
-dl[pre]open was used, include program symbols if -export-dynamic
was specified and there's no dlopen(NULL) support
* mdemo/configure.in: use AC_LIBTOOL_DLOPEN
* mdemo/main.c: demonstrate lt_dlopen(0)
* *demo/configure.in: use AC_CHECK_LIBM
* doc/libtool.texi: renamed file_magic_command to file_magic_cmd,
renamed archive_sym_cmds to archive_expsym_cmds
* ltconfig.in: ditto
* ltmain.in: ditto
* libltdl/ltdl.c: use lt_dlmalloc/free
* libltdl/ltdl.h: define lt_dlmalloc/free
* libtool.m4: added AC_CHECK_LIBM macro
* ltconfig.in: renamed archive_sym_cmds to archive_expsym_cmds,
added always_export_symbols, export_symbols_cmd, exclude_expsyms,
include_expsyms, removed archive_cmds for cygwin/mingw and AIX,
on Solaris store the exported symbols list in objdir
* ltmain.in: allow -export-symbols for modules, use thread_safe flag,
add include_expsyms to the exported symbols
* demo/Makefile.am: renamed hell.debug to hell.static
(we're demonstrating static linking, not debugging)
* tests/demo*: ditto
* doc/libtool.texi (libltdl): documented new lt_dlopen(NULL)
feature
* libltdl/acconfig.h: required for config.h
* libltdl/configure.in: use config.h
* libltdl/ltdl.c: use config.h, support lt_dlopen(NULL)
(returns a handle for the program itself)
* ltconfig.in: minor reformatting
* ltmain.in: in lt_preloaded_symbols always define
the program's symbols first, for -export-dynamic list all
program symbols together, -export-symbols was broken for
programs, minor reformatting
* mdemo/Makefile.am: renamed mdemo.debug to mdemo.static
* tests/mdemo*: ditto, mdemo.test was completely broken
*-*-cygwin32. sed -e 's%(cygwin|mingw)32%1%g' ltconfig.in
* ltmain.in: sed -e 's%(cygwin|mingw)32%1%g' ltmain.in
* ltconfig.in (hardcode_libdir_flag_spec, allow_undefined_flag,
archive_cmds, archive_sym_cmds, old_archive_from_new_cmds):
removed duplication of config by assuming that `test $with_gcc =
yes' implies gnu ld, otherwise MSVC++ (which I haven't tested
since I inheritted the code from Ian Lance Taylor btw!) is implied.
1999-01-25; "don't try to use .o instead of .lo just because
there's no PIC flag. It loses if --disable-static, and there's
not much point if we're referring to the same file anyway...",
because not all linkers will accept .lo object names.
* ltmain.in: In the case where --disable-static is specified (as
noted in Alexandre's log entry), we just link some .o files to
prevent the original error.
Reported by Andrey Slepuhin <pooh@msu.ru>
* demo/configure.in: likewise
* depdemo/configure.in: likewise
* libltdl/configure.in: likewise
* mdemo/configure.in: likewise
* libltdl/ltdl.c: in find_module() check whether libdir is defined,
tryall_dlopen(): move deallocation of an already opened handle
to lt_dlopen(), allocate the directory in lt_dlopen() dynamically,
minor cleanups, fixed memory leak (name)
* libtool.m4: renamed all AM_ macros to AC_ and added aliases for
compatibilty, updated AC_SYS_NM_PARSE (no undefined symbols,
don't count the symbols)
* ltconfig.in: added thread_safe_flag_spec (not used yet),
added generic variable for linker options "linkopts" in
all archive_cmds
* ltmain.in: added -thread-safe flag (unused)
more general regular expressions
(file_regex): remove it; the name is misleading, it's not used
* ltconfig.in, doc/libtool.texi: ditto
* ltconfig.in (linux-gnu*, deplibs_check_method): extend regex to
support `LSB dynamic lib' in the output of `file'
Reported by Scott D. Heavner <sdh@po.cwru.edu>
dependency_libs only just before creating the .la file; they
should not be passed to the C compiler or linker at
library-creation time, since we don't know whether it is supported
(timestamps, update-timestamps): check whether TSDEPS_DIST are
up-to-date and update ltconfig and ltmain.sh if needed
(ltconfig, ltmain.sh): depend on TSDEPS; replace @TIMESTAMP@ with
the Date tag in the ChangeLog
(TSDEPS): empty unless overridden by update-timestamps
* ltconfig.in, ltmain.in (TIMESTAMP): append timestamp to most
references to VERSION
link libraries with dependencies on .la libs.
* NEWS: Removed reference to win32, incase 1.3 ships before
ild is ready.
* doc/PLATFORMS: Removed i686-pc-cygwin32, for the same reason.
* doc/libtool.texi: Removed win32 refs, for the same reason.
platforms that use -rpath, programs must be finalized at
installation time, otherwise build-tree programs will
prefer installed libraries over build-tree ones
From Chris Laas <golem@MIT.EDU>
* ltmain.in (compile): corrected a typo in compile mode which
caused "gcc: unrecognized option -c-fPIC" errors due to a missing
space.
deplibs_check_method): default to unknown, so that we're
remembered that this needs porting; unknown is interpreted as yes,
yes and none, respectively
(freebsd2*, freebsd3*, sunos4*, need_version): set to yes
(freebsd2*, freebsd3*, library_names_spec): libraries without a
version number are not used by `ld'; add $versuffix;
Reported by Ben Jackson <ben@ben.com>
* ltmain.in (deplibs_check_method): alias unknown to none
(need_version): if vinfo was not provided and release info was,
zero out versuffix only if we don't need_version.
* doc/libtool.texi: document what `unknown' means
1999-01-13 Sebastian Wilhelmi <wilhelmi@ira.uka.de>
* ltconfig.in (solaris): Define `deplibs_check_method',
`file_magic_command', `need_lib_prefix' and `sys_lib_search_path'
* ltmain.in (file_magic_regex): Add space before matching pattern,
such that it works on solaris (solaris has a tab between the
library name (including the colon) and the `ELF' and such the
`ELF' will never be matched).
libtool.m4, in last Alexandre Oliva's change to it
(sysv4*, ncr): pass all library dependencies
* ltmain.in (dependency_libs, -R): use `dep' instead of `arg' to
iterate, otherwise we'd overwrite `arg'
(convenience, old_libs): if --disable-shared, convenience
libraries are just old archives, as .lo's are of no use
* tests/cdemo-static.test: print --disable-shared here
* ltmain.in, doc/libtool.texi: documented that -rpath is the same
as -R for programs
* ltmain.in: softened the instructions for linking with installed
libraries, and noted that libtool can be used to link with them;
documented that -rpath is not required for convenience libraries
the files extract from the convenience library. Some systems,
such as FreeBSD2, will add a SYMDEF file, that is not an object
file, and therefore should not be fed to the linker
old-fashioned archive, use a copy of libobjs saved before
convenience libraries are appended
* libltdl/ltdl.h (_LTDLL_EXPORT, _LTDLL_IMPORT): use cygwin or
unix library import/export primitives; this may be convenient for
people willing to create DLLs
(_LTDLL_EXTERN): select _LTDLL_EXPORT or _LTDLL_IMPORT depending
on _LTDL_COMPILE_
* libltdl/ltdl.h, libltdl/ltdl.c (lt_dlpreopen): new function,
that replaces the current preloaded_symbols list with its
argument, and returns the old value, initially NULL
(dldpre_init): don't refer to dld_preloaded_symbols any more
(dldpre_open, dldpre_sym): search preloaded_symbols
(lt_dlpreopen_default): call lt_dlpreopen with
dld_preloaded_symbols, that is declared as extern; it should be
called from the main program or from some static library without
-no-undefined
(lt_dlerror): new function, that returns the error message for the
last error occurred; the error message is kept in the static
variable last_error
* libltdl/configure.in (enable-ltdl-install): moved back from
enable-install; other packages might use enable-install already,
better have fine grained control over this.
* libltdl/Makefile.am (libltdls.la): discarded
ltdll.c into ltmain.in, to avoid its duplication, and added a sed
script to extract it. Also, create def and base files in $objdir,
and don't remove them after the compilation.
(cygwin, library_names_spec): Create static part of the dll with
suffix -dll.a, to avoid conflicts with actual static libraries.
* ltmain.in: Added ltdll.c, as commented out text
* mdemo/Makefile.am: ../libltdl is within $(srcdir)
* libltdl, Makefile.am: added libltdl (a system independent
dlopen wrapper library extracted from mdemo)
* ltmain.in: added -module flag for compiling and linking of
modules. If enabled it compiles always both .o (with -DLT_RENAME)
and .lo files
* mdemo: modified mdemo to work with libltdl
* tests/ltdl*: added tests for libltdl
