Originální popis anglicky:
/sbin/ldconfig - configure dynamic linker run time bindings
Návod, kniha: Linux Programmer's Manual
/sbin/ldconfig [
-nNvXV ] [
-f conf ] [
-C cache ] [
-r root ]
directory ...
/sbin/ldconfig -l [
-v ]
library ...
/sbin/ldconfig -p
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 file names 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.
Therefore, when making dynamic libraries, it is wise to explicitly link
against libc (use -lc).
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 super-user as it may require write permission on
some root owned directories and files.
- -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.
- -f conf
- Use conf instead of /etc/ld.so.conf.
- -C cache
- Use cache instead of /etc/ld.so.cache.
- -r root
- 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.
- /lib/ld.so
- run-time linker/loader
- /etc/ld.so.conf
- File containing a list of colon, space, tab, newline, or
comma spearated 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.
