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.\" $OpenBSD: ldd.1,v 1.7 2007/05/31 19:19:39 jmc Exp $
.\"
.\" Copyright (c) 1996 Per Fogelstrom
.\"
.\" Redistribution and use in source and binary forms, with or without
.\" modification, are permitted provided that the following conditions
.\" are met:
.\" 1. Redistributions of source code must retain the above copyright
.\" notice, this list of conditions and the following disclaimer.
.\" 2. Redistributions in binary form must reproduce the above copyright
.\" notice, this list of conditions and the following disclaimer in the
.\" documentation and/or other materials provided with the distribution.
.\"
.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
.\" OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
.\" WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
.\" DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
.\" SUCH DAMAGE.
.\"
.\"
.Dd $Mdocdate: May 31 2007 $
.Dt LDD 1
.Os
.Sh NAME
.Nm ldd
.Nd list dynamic object dependencies
.Sh SYNOPSIS
.Nm ldd
.Op Fl x
.Ar program
.Sh DESCRIPTION
.Nm
displays the shared objects needed to run
.Ar program .
.Nm
uses the
.Dv DT_NEEDED
tags to determine what dynamic objects are required.
To list the objects
.Nm
sets the environment variable
.Ev LD_TRACE_LOADED_OBJECTS
and then execs
.Ar program .
.Pp
If
.Nm
is invoked with the
.Fl x
flag, the tags from
.Ar program
are listed without using current ldconfig configuration.
.Sh DIAGNOSTICS
Exit status 0 if no error.
Exit status 1 if arg error.
Exit status 2 if
.Ar program
can't be read.
If
.Nm
fails to open the program file a message is printed.
.Sh SEE ALSO
.Xr ld.so 1 ,
.Xr ldconfig 8
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