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       /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 (/usr/lib and /lib).  The cache is
       used by the run-time linker, ld.so or ld-linux.so.  ldcon­
       fig 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

       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   like   this
       "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
              (/usr/lib   and   /lib)   nor  those  specified  in
              /etc/ld.so.conf.  Implies -N.

       -N     Don't rebuild the cache.  Unless -X is also  speci­
              fied, 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.


       /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.

GNU C Library             December 1999               ldconfig(8)
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