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.\" dpkg manual page - deb-shlibs(5)
.\"
.\" Copyright © 1996 Michael Shields <shields@crosslink.net>
.\" Copyright © 2008 Zack Weinberg <zackw@panix.com>
.\"
.\" This 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 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. If not, see <https://www.gnu.org/licenses/>.
.
.TH deb\-shlibs 5 "%RELEASE_DATE%" "%VERSION%" "dpkg suite"
.nh
.SH NAME
deb\-shlibs \- Debian shared library information file
.
.SH DESCRIPTION
.PP
.B shlibs
files map shared library names and versions
.RI ( sonames )
to dependencies suitable for a package control file. There is one
entry per line. Blank lines are \fBnot\fP allowed. Lines beginning
with an \fB#\fP character are considered commentary, and are ignored.
All other lines must have the format
.IP
.RI [ type\fB:\fP ]
.I library
.I version
.I dependencies
.PP
The \fIlibrary\fP and \fIversion\fP fields are whitespace-delimited,
but the \fIdependencies\fP field extends to the end of the line. The
\fItype\fP field is optional and normally not needed.
.PP
The \fIdependencies\fP field has the same syntax as the \fBDepends\fP
field in a binary control file, see \fBdeb\-control\fP(5).
.
.SH EXAMPLES
.PP
The
.B shlibs
file for a typical library package, named
.IR libcrunch1 ,
that provides one library whose soname is
.IR libcrunch.so.1 ,
might read
.IP
libcrunch 1 libcrunch1 (>= 1.2-1)
.PP
The \fIdependencies\fP
must mention the most recent version of the package that added new
symbols to the library: in the above example, new symbols were added to
version 1.2 of
.IR libcrunch .
This is not the only reason the dependencies might need to be
tightened.
.
.SH SEE ALSO
.BR deb\-control (5),
.BR dpkg\-shlibdeps (1),
.BR deb\-symbols (5).
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