Rrc en 16:33 17 may 2014

2014-05-17T16:33:41Z

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__NOTOC__
* [[:#ldconfig | ldconfig]]

== ldconfig ==

<syntaxhighlight lang="bash">

[root@Llawyr ~]# ldconfig --help
Usage: ldconfig [OPTION...]
Configure Dynamic Linker Run Time Bindings.

-c, --format=FORMAT Format to use: new, old or compat (default)
-C CACHE Use CACHE as cache file
-f CONF Use CONF as configuration file
-i, --ignore-aux-cache Ignore auxiliary cache file
-l Manually link individual libraries.
-n Only process directories specified on the command
line. Don't build cache.
-N Don't build cache
-p, --print-cache Print cache
-r ROOT Change to and use ROOT as root directory
-v, --verbose Generate verbose messages
-X Don't generate links
-?, --help Give this help list
--usage Give a short usage message
-V, --version Print program version

Mandatory or optional arguments to long options are also mandatory or optional
for any corresponding short options.

For bug reporting instructions, please see:
<http://www.gnu.org/software/libc/bugs.html>.

[root@Llawyr ~]# ldconfig --version
ldconfig (GNU libc) 2.18
Copyright (C) 2013 Free Software Foundation, Inc.
This is free software; see the source for copying conditions. There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
Written by Andreas Jaeger.

ldconfig se usa para crear, actualizar y remover ligas simbolicas para los LIBS compartidos basado en el ifo de /etc/ld.so.conf

[root@Llawyr ~]# cat /etc/ld.so.conf
include /etc/ld.so.conf.d/*.conf

[root@Llawyr ~]# ls -al /etc/ld.so.conf.d/
total 24
drwxr-xr-x 3 root root 4096 Feb 4 17:52 ./
drwxr-xr-x 140 root root 12288 May 16 12:58 ../
-rw-r--r-- 1 root root 17 Nov 17 05:12 atlas.conf
drwxr-xr-x 2 root root 4096 Feb 4 15:36 GL/
lrwxrwxrwx 1 root root 25 Dec 20 05:36 GL.conf -> /etc/alternatives/gl_conf

[root@Llawyr ~]# cat /etc/ld.so.conf.d/atlas.conf
/usr/lib64/atlas
[root@Llawyr ~]# cat /etc/ld.so.conf.d/atlas.conf
/usr/lib64/atlas
[root@Llawyr ~]# ls -al /usr/lib64/atlas
total 13692
drwxr-xr-x 2 root root 4096 Feb 4 17:52 ./
drwxr-xr-x 216 root root 159744 May 15 16:35 ../
lrwxrwxrwx 1 root root 17 Feb 4 17:52 libatlas.so.3 -> ./libatlas.so.3.0*
-rwxr-xr-x 1 root root 4297416 Nov 17 05:12 libatlas.so.3.0*
lrwxrwxrwx 1 root root 17 Feb 4 17:52 libcblas.so.3 -> ./libcblas.so.3.0*
-rwxr-xr-x 1 root root 122976 Nov 17 05:12 libcblas.so.3.0*
lrwxrwxrwx 1 root root 19 Feb 4 17:52 libclapack.so.3 -> ./libclapack.so.3.0*
-rwxr-xr-x 1 root root 94032 Nov 17 05:12 libclapack.so.3.0*
lrwxrwxrwx 1 root root 19 Feb 4 17:52 libf77blas.so.3 -> ./libf77blas.so.3.0*
-rwxr-xr-x 1 root root 124080 Nov 17 05:12 libf77blas.so.3.0*
lrwxrwxrwx 1 root root 18 Feb 4 17:52 liblapack.so.3 -> ./liblapack.so.3.0*
-rwxr-xr-x 1 root root 8947736 Nov 17 05:12 liblapack.so.3.0*
lrwxrwxrwx 1 root root 19 Feb 4 17:52 libptcblas.so.3 -> ./libptcblas.so.3.0*
-rwxr-xr-x 1 root root 122976 Nov 17 05:12 libptcblas.so.3.0*
lrwxrwxrwx 1 root root 21 Feb 4 17:52 libptf77blas.so.3 -> ./libptf77blas.so.3.0*
-rwxr-xr-x 1 root root 124088 Nov 17 05:12 libptf77blas.so.3.0*

[root@Llawyr ~]# ls -al /etc/ld.so.conf.d/GL
total 12
drwxr-xr-x 2 root root 4096 Feb 4 15:36 ./
drwxr-xr-x 3 root root 4096 Feb 4 17:52 ../
-rw-r--r-- 1 root root 114 Dec 27 03:30 standard.conf

[root@Llawyr ~]# cat /etc/ld.so.conf.d/GL/standard.conf
# This file is knowingly empty since the libraries are in standard search
# path. Please do not remove this file.

[root@Llawyr ~]# cat /etc/ld.so.conf.d/GL.conf
# This file is knowingly empty since the libraries are in standard search
# path. Please do not remove this file.

Para ver los LIBs registrados en el cache
[root@Llawyr ~]# ldconfig -p | head -15
1812 libs found in cache `/etc/ld.so.cache'
libzvbi.so.0 (libc6,x86-64) => /lib64/libzvbi.so.0
libzvbi-chains.so.0 (libc6,x86-64) => /lib64/libzvbi-chains.so.0
libzip.so.2 (libc6,x86-64) => /lib64/libzip.so.2
libzip.so (libc6,x86-64) => /lib64/libzip.so
libzeitgeist-2.0.so.0 (libc6,x86-64) => /lib64/libzeitgeist-2.0.so.0
libzbar.so.0 (libc6,x86-64) => /lib64/libzbar.so.0
libz.so.1 (libc6,x86-64) => /lib64/libz.so.1
libz.so.1 (libc6) => /lib/libz.so.1
libz.so (libc6,x86-64) => /lib64/libz.so
libz.so (libc6) => /lib/libz.so
libytnef.so.0 (libc6,x86-64) => /lib64/libytnef.so.0
libyelp.so.0 (libc6,x86-64) => /lib64/libyelp.so.0
libyaml-cpp.so.0.3 (libc6,x86-64) => /lib64/libyaml-cpp.so.0.3
libx264.so.133 (libc6,x86-64) => /lib64/libx264.so.133

Para mostrar los LIBs por carpeta:

[root@Llawyr ~]# ldconfig -v
/usr/lib64/atlas:
libatlas.so.3 -> libatlas.so.3.0
libclapack.so.3 -> libclapack.so.3.0
libptcblas.so.3 -> libptcblas.so.3.0
libptf77blas.so.3 -> libptf77blas.so.3.0
libf77blas.so.3 -> libf77blas.so.3.0
liblapack.so.3 -> liblapack.so.3.0
libcblas.so.3 -> libcblas.so.3.0
/lib:
libSegFault.so -> libSegFault.so
libnss_dns.so.2 -> libnss_dns-2.18.so
libpulse.so.0 -> libpulse.so.0.16.2
.
.
./lib64:
libkonsoleprivate.so -> libkonsoleprivate.so
libkdeinit4_kcalc.so -> libkdeinit4_kcalc.so
libLLVM-3.3.so -> libLLVM-3.3.so
libkdeinit4_kwin_gles.so -> libkdeinit4_kwin_gles.so
.
.
.

[root@Llawyr lib64]# ldconfig -v | head -25
/usr/lib64/atlas:
libatlas.so.3 -> libatlas.so.3.0
libclapack.so.3 -> libclapack.so.3.0
libptcblas.so.3 -> libptcblas.so.3.0
libptf77blas.so.3 -> libptf77blas.so.3.0
libf77blas.so.3 -> libf77blas.so.3.0
liblapack.so.3 -> liblapack.so.3.0
libcblas.so.3 -> libcblas.so.3.0
/usr/local/lib64:
/lib:
libSegFault.so -> libSegFault.so
libnss_dns.so.2 -> libnss_dns-2.18.so

</syntaxhighlight>

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Rrc en 16:33 17 may 2014