настроить динамические привязки компоновщика во время выполнения (configure dynamic linker run-time bindings)
Имя (Name)
ldconfig - configure dynamic linker run-time bindings
Синопсис (Synopsis)
/sbin/ldconfig [-nNvXV] [-f conf] [-C cache] [-r root]
directory...
/sbin/ldconfig -l [-v] library...
/sbin/ldconfig -p
Описание (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 (on some 64-bit architectures such
as x86-64, /lib and /usr/lib are the trusted directories for
32-bit libraries, while /lib64 and /usr/lib64 are used for 64-bit
libraries).
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 libraries (i.e.,
libc5 or libc6/glibc) based on what C libraries, if any, the
library was linked against.
Some existing libraries 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 used only for those ELF libraries 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.
Note that ldconfig will only look at files that are named
lib*.so* (for regular shared objects) or ld-*.so* (for the
dynamic loader itself). Other files will be ignored. Also,
ldconfig expects a certain pattern to how the symlinks are set
up, like this example, where the middle file (libfoo.so.1 here)
is the SONAME for the library:
libfoo.so -> libfoo.so.1 -> libfoo.so.1.12
Failure to follow this pattern may result in compatibility issues
after an upgrade.
Параметры (Options)
-c fmt, --format=fmt
(Since glibc 2.2) Cache format to use: old, new, or
compat. Since glibc 2.32, the default is new. Before
that, it was compat.
-C cache
Use cache instead of /etc/ld.so.cache.
-f conf
Use conf instead of /etc/ld.so.conf.
-i, --ignore-aux-cache
(Since glibc 2.7) Ignore auxiliary cache file.
-l (Since glibc 2.2) Library mode. Manually link individual
libraries. Intended for use by experts only.
-n Process only the directories specified on the command
line. Don't process the trusted directories, 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.
-p, --print-cache
Print the lists of directories and candidate libraries
stored in the current cache.
-r root
Change to and use root as the root directory.
-v, --verbose
Verbose mode. Print current version number, the name of
each directory as it is scanned, and any links that are
created. Overrides quiet mode.
-V, --version
Print program version.
-X Don't update links. Unless -N is also specified, the
cache is still rebuilt.
Файлы (Files)
/lib/ld.so
Run-time linker/loader.
/etc/ld.so.conf
File containing a list of directories, one per line, 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, as well as those
found in the trusted directories.
Смотри также (See also)
ldd(1), ld.so(8)
