This is libtool.info, produced by makeinfo version 3.12k from
libtool.texi.
INFO-DIR-SECTION GNU programming tools
START-INFO-DIR-ENTRY
* Libtool: (libtool). Generic shared library support script.
END-INFO-DIR-ENTRY
INFO-DIR-SECTION Individual utilities
START-INFO-DIR-ENTRY
* libtoolize: (libtool)Invoking libtoolize. Adding libtool support.
END-INFO-DIR-ENTRY
This file documents GNU Libtool 1.3.5
Copyright (C) 1996-1999 Free Software Foundation, Inc.
Permission is granted to make and distribute verbatim copies of this
manual provided the copyright notice and this permission notice are
preserved on all copies.
Permission is granted to copy and distribute modified versions of
this manual under the conditions for verbatim copying, provided that the
entire resulting derived work is distributed under the terms of a
permission notice identical to this one.
Permission is granted to copy and distribute translations of this
manual into another language, under the above conditions for modified
versions, except that this permission notice may be stated in a
translation approved by the Foundation.
File: libtool.info, Node: libtool script contents, Next: Cheap tricks, Prev: Platform quirks, Up: Maintaining
`libtool' script contents
=========================
The `libtool' script is generated by `ltconfig' (*note
Configuring::). From libtool version 0.7 to 1.0, this script simply
set shell variables, then sourced the libtool backend, `ltmain.sh'.
`ltconfig' from libtool version 1.1 and later inlines the contents of
`ltmain.sh' into the generated `libtool', which improves performance on
many systems.
The convention used for naming variables which hold shell commands
for delayed evaluation, is to use the suffix `_cmd' where a single line
of valid shell script is needed, and the suffix `_cmds' where multiple
lines of shell script *may* be delayed for later evaluation. By
convention, `_cmds' variables delimit the evaluation units with the `~'
character where necessary.
Here is a listing of each of the configuration variables, and how
they are used within `ltmain.sh':
- Variable: AR
The name of the system library archiver.
- Variable: CC
The name of the C compiler used to configure libtool.
- Variable: LD
The name of the linker that libtool should use internally for
reloadable linking and possibly shared libraries.
- Variable: LTCONFIG_VERSION
This is set to the version number of the `ltconfig' script, to
prevent mismatches between the configuration information in
`libtool', and how that information is used in `ltmain.sh'.
- Variable: NM
The name of a BSD-compatible `nm' program, which produces listings
of global symbols in one the following formats:
ADDRESS C GLOBAL-VARIABLE-NAME
ADDRESS D GLOBAL-VARIABLE-NAME
ADDRESS T GLOBAL-FUNCTION-NAME
- Variable: RANLIB
Set to the name of the ranlib program, if any.
- Variable: allow_undefined_flag
The flag that is used by `archive_cmds' in order to declare that
there will be unresolved symbols in the resulting shared library.
Empty, if no such flag is required. Set to `unsupported' if there
is no way to generate a shared library with references to symbols
that aren't defined in that library.
- Variable: always_export_symbols
Whether libtool should automatically generate a list of exported
symbols using EXPORT_SYMBOLS_CMDS before linking an archive. Set
to `yes' or `no'. Default is `no'.
- Variable: archive_cmds
- Variable: archive_expsym_cmds
- Variable: old_archive_cmds
Commands used to create shared libraries, shared libraries with
`-export-symbols' and static libraries, respectively.
- Variable: old_archive_from_new_cmds
If the shared library depends on a static library,
`old_archive_from_new_cmds' contains the commands used to create
that static library. If this variable is not empty,
`old_archive_cmds' is not used.
- Variable: build_libtool_libs
Whether libtool should build shared libraries on this system. Set
to `yes' or `no'.
- Variable: build_old_libs
Whether libtool should build static libraries on this system. Set
to `yes' or `no'.
- Variable: compiler_c_o
Whether the compiler supports the `-c' and `-o' options
simultaneously. Set to `yes' or `no'.
- Variable: compiler_o_lo
Whether the compiler supports compiling directly to a ".lo" file,
i.e whether object files do not have to have the suffix ".o". Set
to `yes' or `no'.
- Variable: dlopen
Whether `dlopen' is supported on the platform. Set to `yes' or
`no'.
- Variable: dlopen_self
Whether it is possible to `dlopen' the executable itself. Set to
`yes' or `no'.
- Variable: dlopen_self_static
Whether it is possible to `dlopen' the executable itself, when it
is linked statically (`-all-static'). Set to `yes' or `no'.
- Variable: echo
An `echo' program which does not interpret backslashes as an
escape character.
- Variable: exclude_expsyms
List of symbols that should not be listed in the preloaded symbols.
- Variable: export_dynamic_flag_spec
Compiler link flag that allows a dlopened shared library to
reference symbols that are defined in the program.
- Variable: export_symbols_cmds
Commands to extract exported symbols from LIBOBJS to the file
EXPORT_SYMBOLS.
- Variable: fast_install
Determines whether libtool will privilege the installer or the
developer. The assumption is that installers will seldom run
programs in the build tree, and the developer will seldom install.
This is only meaningful on platforms in which
SHLIBPATH_OVERRIDES_RUNPATH is not `yes', so FAST_INSTALL will be
set to `needless' in this case. If FAST_INSTALL set to `yes',
libtool will create programs that search for installed libraries,
and, if a program is run in the build tree, a new copy will be
linked on-demand to use the yet-to-be-installed libraries. If set
to `no', libtool will create programs that use the
yet-to-be-installed libraries, and will link a new copy of the
program at install time. The default value is `yes' or
`needless', depending on platform and configuration flags, and it
can be turned from `yes' to `no' with the configure flag
`--disable-fast-install'.
- Variable: finish_cmds
Commands to tell the dynamic linker how to find shared libraries
in a specific directory.
- Variable: finish_eval
Same as FINISH_CMDS, except the commands are not displayed.
- Variable: fix_srcfile_path
Expression to fix the shell variable $srcfile for the compiler.
- Variable: global_symbol_pipe
A pipeline that takes the output of NM, and produces a listing of
raw symbols followed by their C names. For example:
$ eval "$NM progname | $global_symbol_pipe"
D SYMBOL1 C-SYMBOL1
T SYMBOL2 C-SYMBOL2
C SYMBOL3 C-SYMBOL3
...
$
The first column contains the symbol type (used to tell data from
code on some platforms), but its meaning is system dependent.
- Variable: global_symbol_to_cdecl
A pipeline that translates the output of GLOBAL_SYMBOL_PIPE into
proper C declarations. On platforms whose linkers differentiate
code from data, such as HP/UX, data symbols will be declared as
such, and code symbols will be declared as functions. On
platforms that don't care, everything is assumed to be data.
- Variable: hardcode_action
Either `immediate' or `relink', depending on whether shared
library paths can be hardcoded into executables before they are
installed, or if they need to be relinked.
- Variable: hardcode_direct
Set to `yes' or `no', depending on whether the linker hardcodes
directories if a library is directly specified on the command line
(such as `DIR/libNAME.a') when HARDCODE_LIBDIR_FLAG_SPEC is
specified.
- Variable: hardcode_libdir_flag_spec
Flag to hardcode a LIBDIR variable into a binary, so that the
dynamic linker searches LIBDIR for shared libraries at runtime.
If it is empty, libtool will try to use some other hardcoding
mechanism.
- Variable: hardcode_libdir_separator
If the compiler only accepts a single HARDCODE_LIBDIR_FLAG, then
this variable contains the string that should separate multiple
arguments to that flag.
- Variable: hardcode_minus_L
Set to `yes' or `no', depending on whether the linker hardcodes
directories specified by `-L' flags into the resulting executable
when HARDCODE_LIBDIR_FLAG_SPEC is specified.
- Variable: hardcode_shlibpath_var
Set to `yes' or `no', depending on whether the linker hardcodes
directories by writing the contents of `$shlibpath_var' into the
resulting executable when HARDCODE_LIBDIR_FLAG_SPEC is specified.
Set to `unsupported' if directories specified by `$shlibpath_var'
are searched at run time, but not at link time.
- Variable: host
- Variable: host_alias
For information purposes, set to the specified and canonical names
of the system that libtool was configured for.
- Variable: include_expsyms
List of symbols that must always be exported when using
EXPORT_SYMBOLS.
- Variable: libext
The standard old archive suffix (normally "a").
- Variable: libname_spec
The format of a library name prefix. On all Unix systems, static
libraries are called `libNAME.a', but on some systems (such as
OS/2 or MS-DOS), the library is just called `NAME.a'.
- Variable: library_names_spec
A list of shared library names. The first is the name of the file,
the rest are symbolic links to the file. The name in the list is
the file name that the linker finds when given `-lNAME'.
- Variable: link_static_flag
Linker flag (passed through the C compiler) used to prevent dynamic
linking.
- Variable: need_lib_prefix
Whether libtool should automatically prefix module names with
'lib'. Set to `yes' or `no'. By default, it is `unknown', which
means the same as `yes', but documents that we are not really sure
about it. `yes' means that it is possible both to `dlopen' and to
link against a library without 'lib' prefix, i.e. it requires
HARDCODE_DIRECT to be `yes'.
- Variable: need_version
Whether versioning is required for libraries, i.e. whether the
dynamic linker requires a version suffix for all libraries. Set
to `yes' or `no'. By default, it is `unknown', which means the
same as `yes', but documents that we are not really sure about it.
- Variable: need_locks
Whether files must be locked to prevent conflicts when compiling
simultaneously. Set to `yes' or `no'.
- Variable: no_builtin_flag
Compiler flag to disable builtin functions that conflict with
declaring external global symbols as `char'.
- Variable: no_undefined_flag
The flag that is used by `archive_cmds' in order to declare that
there will be no unresolved symbols in the resulting shared
library. Empty, if no such flag is required.
- Variable: objdir
The name of the directory that contains temporary libtool files.
- Variable: objext
The standard object file suffix (normally "o").
- Variable: pic_flag
Any additional compiler flags for building library object files.
- Variable: postinstall_cmds
- Variable: old_postinstall_cmds
Commands run after installing a shared or static library,
respectively.
- Variable: postuninstall_cmds
- Variable: old_postuninstall_cmds
Commands run after uninstalling a shared or static library,
respectively.
- Variable: reload_cmds
- Variable: reload_flag
Commands to create a reloadable object.
- Variable: runpath_var
The environment variable that tells the linker which directories to
hardcode in the resulting executable.
- Variable: shlibpath_overrides_runpath
Indicates whether it is possible to override the hard-coded library
search path of a program with an environment variable. If this is
set to no, libtool may have to create two copies of a program in
the build tree, one to be installed and one to be run in the build
tree only. When each of these copies is created depends on the
value of `fast_install'. The default value is `unknown', which is
equivalent to `no'.
- Variable: shlibpath_var
The environment variable that tells the dynamic linker where to
find shared libraries.
- Variable: soname_spec
The name coded into shared libraries, if different from the real
name of the file.
- Variable: sys_lib_dlsearch_path_spec
Expression to get the run-time system library search path.
Directories that appear in this list are never hard-coded into
executables.
- Variable: sys_lib_search_path_spec
Expression to get the compile-time system library search path.
This variable is used by libtool when it has to test whether a
certain library is shared or static. The directories listed in
SHLIBPATH_VAR are automatically appended to this list, every time
libtool runs (i.e., not at configuration time), because some
linkers use this variable to extend the library search path.
Linker switches such as `-L' also augment the search path.
- Variable: thread_safe_flag_spec
Linker flag (passed through the C compiler) used to generate
thread-safe libraries.
- Variable: version_type
The library version numbering type. One of `libtool', `linux',
`osf', `sunos', or `none'.
- Variable: whole_archive_flag_spec
Compiler flag to generate shared objects from convenience archives.
- Variable: wl
The C compiler flag that allows libtool to pass a flag directly to
the linker. Used as: `${wl}SOME-FLAG'.
Variables ending in `_cmds' or `_eval' contain a semicolon-separated
list of commands that are `eval'ed one after another. If any of the
commands return a nonzero exit status, libtool generally exits with an
error message.
Variables ending in `_spec' are `eval'ed before being used by
libtool.
File: libtool.info, Node: Cheap tricks, Prev: libtool script contents, Up: Maintaining
Cheap tricks
============
Here are a few tricks that you can use in order to make
maintainership easier:
* When people report bugs, ask them to use the `--config',
`--debug', or `--features' flags, if you think they will help you.
These flags are there to help you get information directly, rather
than having to trust second-hand observation.
* Rather than reconfiguring libtool every time I make a change to
`ltconfig.in' or `ltmain.in', I keep a permanent `libtool' script
in my PATH, which sources `ltmain.in' directly.
The following steps describe how to create such a script, where
`/home/src/libtool' is the directory containing the libtool source
tree, `/home/src/libtool/libtool' is a libtool script that has been
configured for your platform, and `~/bin' is a directory in your
PATH:
trick$ cd ~/bin
trick$ sed '/^# ltmain\.sh/q' /home/src/libtool/libtool > libtool
trick$ cat >> libtool
LTCONFIG_VERSION="@VERSION@"
. /home/src/libtool/ltmain.in
^D
trick$ chmod +x libtool
trick$ libtool --version
ltmain.sh (GNU @PACKAGE@) @VERSION@
trick$
The output of the final `libtool --version' command shows that the
`ltmain.in' script is being used directly. Now, modify `~/bin/libtool'
or `/home/src/libtool/ltmain.in' directly in order to test new changes
without having to rerun `ltconfig'.
File: libtool.info, Node: Index, Prev: Maintaining, Up: Top
Index
*****
* Menu:
* .la files: Linking libraries.
* .libs subdirectory: Linking libraries.
* .lo files: Creating object files.
* AC_CONFIG_AUX_DIR: Invoking libtoolize.
* AC_DISABLE_FAST_INSTALL: AM_PROG_LIBTOOL.
* AC_DISABLE_SHARED: AM_PROG_LIBTOOL.
* AC_DISABLE_STATIC: AM_PROG_LIBTOOL.
* AC_FUNC_ALLOCA: Autoconf .o macros.
* AC_LIBTOOL_DLOPEN: AM_PROG_LIBTOOL.
* AC_LIBTOOL_WIN32_DLL: AM_PROG_LIBTOOL.
* AC_REPLACE_FUNCS: Autoconf .o macros.
* aclocal: AM_PROG_LIBTOOL.
* allow_undefined_flag: libtool script contents.
* always_export_symbols: libtool script contents.
* AM_DISABLE_SHARED: AM_PROG_LIBTOOL.
* AM_DISABLE_STATIC: AM_PROG_LIBTOOL.
* AM_PROG_LIBTOOL: AM_PROG_LIBTOOL.
* application-level dynamic linking <1>: Using libltdl.
* application-level dynamic linking: Dlopened modules.
* AR: libtool script contents.
* ar: Linking libraries.
* archive_cmds: libtool script contents.
* archive_expsym_cmds: libtool script contents.
* AS: Invoking ltconfig.
* assign.test: Test descriptions.
* avoiding shared libraries: Static-only libraries.
* bug reports: Reporting bugs.
* buggy system linkers: Linking executables.
* bugs, subtle ones caused by buggy linkers: Linking executables.
* build-relink.test: Test descriptions.
* build_libtool_libs: libtool script contents.
* build_old_libs: libtool script contents.
* C header files, portable: C header files.
* C++, pitfalls: C++ libraries.
* C++, using: Other languages.
* C, not using: Other languages.
* CC <1>: libtool script contents.
* CC: Invoking ltconfig.
* cdemo-conf.test: Test descriptions.
* cdemo-exec.test: Test descriptions.
* cdemo-make.test: Test descriptions.
* cdemo-shared.test: Test descriptions.
* cdemo-static.test: Test descriptions.
* CFLAGS: Invoking ltconfig.
* command options, libtool: Invoking libtool.
* command options, libtoolize: Invoking libtoolize.
* command options, ltconfig: Invoking ltconfig.
* compile mode: Compile mode.
* compiler_c_o: libtool script contents.
* compiler_o_lo: libtool script contents.
* compiling object files: Creating object files.
* complexity of library systems: Postmortem.
* config.guess: Distributing.
* config.sub: Distributing.
* configuring libtool: Configuring.
* convenience libraries: Static libraries.
* CPPFLAGS: Invoking ltconfig.
* debugging libraries: Static-only libraries.
* definition of libraries: Libtool paradigm.
* demo-conf.test: Test descriptions.
* demo-exec.test: Test descriptions.
* demo-inst.test: Test descriptions.
* demo-make.test: Test descriptions.
* demo-nofast.test: Test descriptions.
* demo-shared.test: Test descriptions.
* demo-static.test: Test descriptions.
* demo-unst.test: Test descriptions.
* dependencies between libraries: Inter-library dependencies.
* dependency versioning: Versioning.
* deplibs.test: Test descriptions.
* deplibs_check_method: Porting inter-library dependencies.
* design issues: Issues.
* design of library interfaces: Library tips.
* design philosophy: Motivation.
* developing libraries: Static-only libraries.
* dlclose <1>: Using libltdl.
* dlclose: Dlopened modules.
* dlerror: Using libltdl.
* DLLTOOL: Invoking ltconfig.
* dlopen <1>: libtool script contents.
* dlopen <2>: Using libltdl.
* dlopen: Dlopened modules.
* dlopen_self: libtool script contents.
* dlopen_self_static: libtool script contents.
* dlopening modules <1>: Using libltdl.
* dlopening modules: Dlopened modules.
* dlopening, pitfalls: Dlopen issues.
* dlsym <1>: Using libltdl.
* dlsym: Dlopened modules.
* double-compilation, avoiding: Static-only libraries.
* dryrun.test: Test descriptions.
* dynamic dependencies: Versioning.
* dynamic linking, applications <1>: Using libltdl.
* dynamic linking, applications: Dlopened modules.
* dynamic modules, names: Finding the dlname.
* echo: libtool script contents.
* eliding shared libraries: Static-only libraries.
* examples of using libtool: Using libtool.
* exclude_expsyms: libtool script contents.
* execute mode: Execute mode.
* export_dynamic_flag_spec: libtool script contents.
* export_symbols_cmds: libtool script contents.
* failed tests: When tests fail.
* fast_install: libtool script contents.
* file_magic: Porting inter-library dependencies.
* file_magic_cmd: Porting inter-library dependencies.
* file_magic_test_file: Porting inter-library dependencies.
* finish mode: Finish mode.
* finish_cmds: libtool script contents.
* finish_eval: libtool script contents.
* fix_srcfile_path: libtool script contents.
* formal versioning: Libtool versioning.
* global functions: Library tips.
* global_symbol_pipe: libtool script contents.
* global_symbol_to_cdecl: libtool script contents.
* hardcode.test: Test descriptions.
* hardcode_action: libtool script contents.
* hardcode_direct: libtool script contents.
* hardcode_libdir_flag_spec: libtool script contents.
* hardcode_libdir_separator: libtool script contents.
* hardcode_minus_L: libtool script contents.
* hardcode_shlibpath_var: libtool script contents.
* header files: Library tips.
* host: libtool script contents.
* host_alias: libtool script contents.
* implementation of libtool: libtool script contents.
* include files, portable: C header files.
* include_expsyms: libtool script contents.
* install: Installing libraries.
* install mode: Install mode.
* installation, finishing: Installing libraries.
* inter-library dependencies: Inter-library dependencies.
* inter-library dependency: Porting inter-library dependencies.
* languages, non-C: Other languages.
* LD <1>: libtool script contents.
* LD: Invoking ltconfig.
* LDFLAGS: Invoking ltconfig.
* libext: libtool script contents.
* libltdl: Using libltdl.
* libname_spec: libtool script contents.
* libraries, definition of: Libtool paradigm.
* libraries, finishing installation: Installing libraries.
* libraries, stripping: Installing libraries.
* library interfaces: Interfaces.
* library interfaces, design: Library tips.
* library object file: Creating object files.
* library_names_spec: libtool script contents.
* LIBS: Invoking ltconfig.
* libtool: Invoking libtool.
* libtool command options: Invoking libtool.
* libtool examples: Using libtool.
* libtool implementation: libtool script contents.
* libtool libraries: Linking libraries.
* libtool library versions: Libtool versioning.
* libtool specifications: Motivation.
* libtoolize: Invoking libtoolize.
* libtoolize command options: Invoking libtoolize.
* link mode: Link mode.
* link-2.test: Test descriptions.
* link.test: Test descriptions.
* link_static_flag: libtool script contents.
* linking against installed libraries: Linking executables.
* linking against uninstalled libraries: Linking executables.
* linking with installed libtool libraries: Linking executables.
* linking, partial: Link mode.
* LN_S: Invoking ltconfig.
* lt_dladdsearchdir: Libltdl interface.
* lt_dlclose: Libltdl interface.
* lt_dlerror: Libltdl interface.
* lt_dlexit: Libltdl interface.
* lt_dlfree: Libltdl interface.
* lt_dlgetsearchpath: Libltdl interface.
* lt_dlhandle: Libltdl interface.
* lt_dlinit: Libltdl interface.
* lt_dlmalloc: Libltdl interface.
* lt_dlopen: Libltdl interface.
* lt_dlopenext: Libltdl interface.
* lt_dlpreload: Libltdl interface.
* lt_dlpreload_default: Libltdl interface.
* lt_dlsetsearchpath: Libltdl interface.
* lt_dlsym: Libltdl interface.
* lt_dlsymlist <1>: Libltdl interface.
* lt_dlsymlist: Dlpreopening.
* lt_preloaded_symbols: Dlpreopening.
* lt_ptr_t: Libltdl interface.
* LTALLOCA: Autoconf .o macros.
* ltconfig: Invoking ltconfig.
* ltconfig command options: Invoking ltconfig.
* LTCONFIG_VERSION: libtool script contents.
* LTDL_SET_PRELOADED_SYMBOLS: Libltdl interface.
* LTLIBOBJS: Autoconf .o macros.
* LTLIBRARIES: Using Automake.
* ltmain.sh: Distributing.
* Makefile: Makefile rules.
* Makefile.am: Makefile rules.
* Makefile.in: Makefile rules.
* mdemo-conf.test: Test descriptions.
* mdemo-exec.test: Test descriptions.
* mdemo-inst.test: Test descriptions.
* mdemo-make.test: Test descriptions.
* mdemo-shared.test: Test descriptions.
* mdemo-static.test: Test descriptions.
* mdemo-unst.test: Test descriptions.
* mode, compile: Compile mode.
* mode, execute: Execute mode.
* mode, finish: Finish mode.
* mode, install: Install mode.
* mode, link: Link mode.
* mode, uninstall: Uninstall mode.
* modules, dynamic <1>: Using libltdl.
* modules, dynamic: Dlopened modules.
* motivation for writing libtool: Motivation.
* names of dynamic modules: Finding the dlname.
* need_lib_prefix: libtool script contents.
* need_locks: libtool script contents.
* need_version: libtool script contents.
* NM <1>: libtool script contents.
* NM: Invoking ltconfig.
* no_builtin_flag: libtool script contents.
* no_undefined_flag: libtool script contents.
* noinst-link.test: Test descriptions.
* nomode.test: Test descriptions.
* none: Porting inter-library dependencies.
* objdir: libtool script contents.
* OBJDUMP: Invoking ltconfig.
* object files, compiling: Creating object files.
* object files, library: Creating object files.
* objext: libtool script contents.
* old_archive_cmds: libtool script contents.
* old_archive_from_new_cmds: libtool script contents.
* old_postinstall_cmds: libtool script contents.
* old_postuninstall_cmds: libtool script contents.
* opaque data types: Library tips.
* options, libtool command: Invoking libtool.
* options, libtoolize command: Invoking libtoolize.
* options, ltconfig command: Invoking ltconfig.
* other implementations, flaws in: Postmortem.
* partial linking: Link mode.
* pass_all: Porting inter-library dependencies.
* PIC (position-independent code): Creating object files.
* pic_flag: libtool script contents.
* pitfalls using C++: C++ libraries.
* pitfalls with dlopen: Dlopen issues.
* portable C headers: C header files.
* position-independent code: Creating object files.
* postinstall_cmds: libtool script contents.
* postinstallation: Installing libraries.
* postuninstall_cmds: libtool script contents.
* problem reports: Reporting bugs.
* problems, blaming somebody else for: Troubleshooting.
* problems, solving: Troubleshooting.
* program wrapper scripts: Linking executables.
* quote.test: Test descriptions.
* RANLIB <1>: libtool script contents.
* RANLIB: Invoking ltconfig.
* ranlib: Linking libraries.
* reload_cmds: libtool script contents.
* reload_flag: libtool script contents.
* renaming interface functions: Library tips.
* reporting bugs: Reporting bugs.
* reusability of library systems: Postmortem.
* runpath_var: libtool script contents.
* saving time: Static-only libraries.
* security problems with buggy linkers: Linking executables.
* sh.test: Test descriptions.
* shared libraries, not using: Static-only libraries.
* shared library versions: Versioning.
* shl_load <1>: Using libltdl.
* shl_load: Dlopened modules.
* shlibpath_overrides_runpath: libtool script contents.
* shlibpath_var: libtool script contents.
* solving problems: Troubleshooting.
* soname_spec: libtool script contents.
* specifications for libtool: Motivation.
* standalone binaries: Static libraries.
* static linking: Static libraries.
* strip: Installing libraries.
* stripping libraries: Installing libraries.
* su: Installing libraries.
* suffix.test: Test descriptions.
* sys_lib_dlsearch_path_spec: libtool script contents.
* sys_lib_search_path_spec: libtool script contents.
* test suite: Libtool test suite.
* test_compile: Porting inter-library dependencies.
* tests, failed: When tests fail.
* thread_safe_flag_spec: libtool script contents.
* time, saving: Static-only libraries.
* tricky design issues: Issues.
* trouble with C++: C++ libraries.
* trouble with dlopen: Dlopen issues.
* troubleshooting: Troubleshooting.
* undefined symbols, allowing: Link mode.
* uninstall mode: Uninstall mode.
* unknown: Porting inter-library dependencies.
* unresolved symbols, allowing: Link mode.
* using shared libraries, not: Static-only libraries.
* version_type: libtool script contents.
* versioning, formal: Libtool versioning.
* whole_archive_flag_spec: libtool script contents.
* wl: libtool script contents.
* wrapper scripts for programs: Linking executables.