changelog.0

GNU libtool 是一个通用库支持脚本

	  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
		
1999-03-07  Alexandre Oliva  <[e-mail]>

	* tests/Makefile.am (TESTS): run hardcode before build-relink
	trashes libhello.la
	* tests/hardcode.test (need_prefix): set to yes so that _inst is
	not removed

	* ltmain.in (compile_command): append finalize search path to
	compile search path

	* tests/build-relink.test: new; check shlibpath_overrides_runpath
	* tests/Makefile.am (TESTS): add build-relink.test; remove
	hardcode.test duplicates
	* doc/libtool.texi: document it

	* ltmain.in (relink_command): do not prepend cd `pwd` to it, the
	scripts already enters the correct directory, and expanding the
	pathname would prevent the build tree from moving
	
	* ltconfig.in (enable_fast_install): force it to no only if we
	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

	* ltconfig.in (enable_fast_install): test whether it can be forced 
	off after shlibpath_overrides_runpath and enable_shared are set

1999-03-07  Thomas Tanner  <[e-mail]>

	* TODO: updated
	* NEWS: updated

	* TODO: scheduled some items for next release/future
	* 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

1999-03-06  Alexandre Oliva  <[e-mail]>

	* libltdl/ltdl.c (LTDL_LAZY_OR_NOW): renamed from LTDL_NOW; prefer 
	LAZY loading because it's much faster and NOW is apparently
	partially broken on FreeBSD
	Reported by Archie Cobbs <[e-mail]>

	* ltconfig.in (archive_expsym_cmds, solaris, without_gnu_ld):
	$lib.exp already starts with $objdir/
	Reported by Godmar Back <[e-mail]>

	* ltmain.in (freebsd): compile symbol table file with pic_flag
	only on FreeBSD and when not static linking; it's been causing
	trouble on platforms such as OpenBSD.

1999-02-26  Gary V. Vaughan  <[e-mail]>

	* libtool.m4 (cygwin): s/\\(mingw\\|cygwin\\)32/\\1/g.  Must've
	missed this file when I changed to cygnus' new sanction name.

	* ltconfig.in (sub_uncdrive): removed.  This won't work with
	the next version of cygwin.
	(sub_uncdir): removed. We use <drive>:/path/to/executable now.
	* libtool.m4 (AC_PROG_LD): removed sub_uncdrive and sub_uncdir.

1999-02-25  Thomas Tanner  <[e-mail]>

	* TODO: added items for next alpha release, ILD etc.
	* libltdl/ltdl.c: removed unnecessary check from presym_sym, 
	  fixed bug in lt_dlclose, allow lt_dlopenext(NULL),
	  set deplibs for lt_dlopen(NULL)

1999-02-24  Alexandre Oliva  <[e-mail]>

	* ltmain.in (file_magic_regex): sed `10q' is faster than `11,$d'

1999-02-22  Thomas Tanner  <[e-mail]>

	* ltconfig.in (dlopen, dlopen_self): default is unknown
	* ltmain.in: fixed -dlopen self, print a warning
	  if -dlopen is used without AC_LIBTOOL_DLOPEN 
	* mdemo/Makefile.am: use -dlopen self

1999-02-22  Alexandre Oliva  <[e-mail]>

	* ltmain.in: added missing mkdir $progdir for on-demand executable

	* ltmain.in: create on-demand executable as $progdir/$$-$program,
	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.

	* TODO: removed ILD, soon to be merged, and added convenience
	libraries docs

	* ltconfig.in (irix5*, irix6*, shlibpath_overides_runpath): yes

	* ltmain.in: remove on-demand executable in the proper place, and
	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

	* libltdl/configure.in: check for dld.h
	* libltdl/ltdl.c: include dld.h
	(dld_open) it's spelled memory_error, not no_memory_error
	Reported by Stefan Burstroem <[e-mail]>
	
	* ltmain.in: fix typos in my last change (s/ocmpile/compile/)

1999-02-21  Thomas Tanner  <[e-mail]>

	* libltdl/ltdl.c (lt_dlopen): use newhandle instead of handle
	  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

1999-02-20  Alexandre Oliva  <[e-mail]>

	* ltmain.in: avoid duplication of -L switches, it sometimes breaks
	IRIX 5.2's linker

	* ltconfig.in (freebsd*, finish_cmds): expand objformat here
	Reported by Vladimir Kushnir <[e-mail]>

1999-02-20  Vladimir Kushnir <[e-mail]>

	* ltconfig.in (freebsd-elf*, need_version, need_lib_prefix): no
	(freebsd-elf*, library_names_spec): add $libname.so instead of
	$libname.so$versuffix; add $libname$release.so

1999-02-20  Alexandre Oliva  <[e-mail]>

	* doc/libtool.texi: remove ticks from menu items; it breaks TeX
	Reported by Erez Zadok <[e-mail]>

	* ltmain.in: fixes for export-symbols dry-run

	* ltconfig.in (shlibpath_overrides_runpath): new variable;
	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
	
	* libtool.m4 (AC_LIBTOOL_DLOPEN): check for dlopen in libc before
	trying in dl.  Add the actual dlopening type to lt_cv_dlopen, and
	add any needed libraries to lt_cv_dlopen_LIBS.  Add test for
	MS-Windows' LoadLibrary.  Check whether a program can dlopen
	itself only if we really have dlopen(), not some equivalent
	function, but leave room for testing with other mechanisms.
	(AC_PROG_LIBTOOL): assume some form of dlopen, but not
	dlopen(NULL), is available if AC_LIBTOOL_DLOPEN is not used, for
	backward compatibility.

1999-02-20  Archie Cobbs  <[e-mail]>

	* libltdl/ltdl.c (lt_dlopen): use newhandle instead of handle
	where appropriate, when dlopening a non-libtool library

1999-02-19  Gary V. Vaughan  <[e-mail]>

	* ltconfig.in (export_symbols_cmds): renamed from
	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.
	
1999-02-18  Alexandre Oliva  <[e-mail]>

	* ltconfig.in (ld_shlibs): move -soname and similar flags to the
	end of archive_cmds and archive_expsym_cmds, so as to prevent
	gcc's collect2 from inserting an object file between -soname and
	the library name

	* ltconfig.in (openbsd*, netbsd*, library_names_spec): append
	alternate name without ${release}, otherwise build fails when
	-release is used

1999-02-18  Gary V. Vaughan  <[e-mail]>

	* ltconfig.in (archive{,_sym}_commands): Be careful not to
	re-export the dll entry points DllMain@12, _cygwin_dll_entry@12 and
	_cygwin_noncygwin_dll_entry@12 to avoid bugs with the wrong entry
	function being called with inter-dll dependencies.
	Reported by DJ Delorie <[e-mail]>
	* THANKS: Added DJ Delorie, since his code inspired the impgen.c
	program and because he has patiently answered all of the
	irritating dll and win32 questions I have fired at him.
	
	* ltmain.in (version_type):  Oops.  Irix versioning implies that
	major version numbers are 1 based (not zero based).  Fixed.
	
	* ltmain.in (version_type): Implement irix versioning.
	* ltconfig.in (irix{5,6}*): Use new irix shared object versioning.
	* TODO: remove irix versioning from TODO list.

	* ltmain.in (impgen.c): Added a new embedded C file that can be
	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...
	
1999-02-18  Thomas Tanner  <[e-mail]>

	* TODO: updated
	* 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
	
1999-02-17  Alexandre Oliva  <[e-mail]>

	* ltconfig.in: (freebsd2*, sunos4*, exclude_expsyms): exclude
	_GLOBAL_OFFSET_TABLE_
	* ltmain.in: implement exclude_expsyms with egrep

	* libltdl/ltdl.c (lt_dlmalloc, lt_dlfree): SunOS' cc can't cope
	with argument lists, we __P even in the definition

1999-02-15  Thomas Tanner  <[e-mail]>

	* cdemo/Makefile.am: renamed *foo1 to *foo, removed $(MATH_LIB)
	* 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)
	  	  
1999-02-15  Gary V. Vaughan  <[e-mail]>

	* demo/dlmain.c (_WIN32): The lt_symlist structure is now const,
	so my original horrible temporary win32 hack no longer worked.
	Here is a new horrible temporary hack to prevent helldl from SEGVing
	on win32.  I will fix this properly when we figure out how to do
	data exports from dlls.

1999-02-14  Alexandre Oliva  <[e-mail]>

	* libtool.m4 (AC_CHECK_LIBM): do not set MATHLIB or AC_SUBST it,
	this has a negative side-effect of causing automake to add MATHLIB 
	to every single Makefile.  Let's use plain AC_CHECK_LIB, so that
	LIBS get set, until we find a better alternative
	* *demo/Makefile.am: remove $(MATHLIB)

	* libltdl/configure.in: add a DESCRIPTION argument to AC_DEFINEs
	where appropriate, so as to get rid of acconfig.h
	* libltdl/acconfig.h: removed

1999-02-13  Thomas Tanner  <[e-mail]>

	* *demo/Makefile.am: use $(MATHLIB)
	* *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

1999-02-12  Gary V. Vaughan  <[e-mail]>

	* libltdl/ltdl.h (_LTDLL_EXTERN): libltdl is no longer linked as a
	shared library, so the _declspec's were preventing the linker from
	resolving symbols on win32.  They have been removed now.