Name
/sbin/ldconfig — configure dynamic linker run time
bindings
Synopsis
/sbin/ldconfig
[−nNvXV] [ −f conf ] [ −C cache ] [ −r root ] directory...
/sbin/ldconfig −l [−v] library...
DESCRIPTION
ldconfig
creates the necessary links and cache to the most recent
shared libraries found in the directories specified on the
command line, in the file /etc/ld.so.conf, and in the trusted
directories (/lib and
/usr/lib). The cache is used by
the run-time linker, ld.so or ld-linux.so. ldconfig checks the header and
filenames of the libraries it encounters when determining
which versions should have their links updated.
ldconfig
will attempt to deduce the type of ELF libs (ie. libc5 or
libc6/glibc) based on what C libs, if any, the library was
linked against.
Some existing libs do not contain enough information to
allow the deduction of their type. Therefore, the
/etc/ld.so.conf file format
allows the specification of an expected type. This is
only used for those
ELF libs which we can not work out. The format is
"dirname=TYPE", where TYPE can be libc4, libc5, or libc6.
(This syntax also works on the command line.) Spaces are
not allowed. Also
see the −p option.
ldconfig should
normally be run by the superuser as it may require write
permission on some root owned directories and files.
OPTIONS
−v-
Verbose mode. Print current version number, the name
of each directory as it is scanned, and any links that
are created. Overrides quiet mode.
−n-
Only process directories specified on the command
line. Don't process the trusted directories
(/lib and /usr/lib) nor those specified in
/etc/ld.so.conf. Implies
−N.
−N-
Don't rebuild the cache. Unless −X is also specified, links are
still updated.
−X-
Don't update links. Unless −N is also specified, the cache
is still rebuilt.
−fconf-
Use conf
instead of /etc/ld.so.conf.
−Ccache-
Use cache
instead of /etc/ld.so.cache.
−rroot-
Change to and use root as the root
directory.
−l-
Library mode. Manually link individual libraries.
Intended for use by experts only.
−p-
Print the lists of directories and candidate
libraries stored in the current cache.
FILES
/lib/ld.so-
run-time linker/loader
/etc/ld.so.conf-
File containing a list of colon, space, tab,
newline, or comma-separated directories in which to
search for libraries.
/etc/ld.so.cache-
File containing an ordered list of libraries found
in the directories specified in /etc/ld.so.conf.
Copyright 1999 SuSE GmbH Nuernberg, Germany
Author: Thorsten Kukuk <kukuk@suse.de>
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License as
published by the Free Software Foundation; either version 2 of the
License, or (at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
General Public License for more details.
You should have received a copy of the GNU General Public
License along with this program; see the file COPYING. If not,
write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA.
Modified, 6 May 2002, Michael Kerrisk, <mtk-manpages@gmx.net>
Change listed order of /usr/lib and /lib
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