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74 lines
1.4 KiB
Groff
74 lines
1.4 KiB
Groff
.\" $FreeBSD$
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.\"
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.Dd October 22, 1993
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.Dt LDD 1
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.Os
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.Sh NAME
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.Nm ldd
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.Nd list dynamic object dependencies
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.Sh SYNOPSIS
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.Nm
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.Op Fl a
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.Op Fl v
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.Op Fl f Ar format
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.Ar program ...
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.Sh DESCRIPTION
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The
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.Nm
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utility displays all shared objects that are needed to run the given program or
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to load the given shared object.
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Contrary to
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.Xr nm 1 ,
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the list includes
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.Dq indirect
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dependencies that are the result of needed shared objects which themselves
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depend on yet other shared objects.
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.Pp
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Zero, one or two
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.Fl f
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options may be given.
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The argument is a format string passed to
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.Xr rtld 1
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and allows customization of
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.Nm Ns 's
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output.
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If one is given, it sets
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.Ev LD_TRACE_LOADED_OBJECTS_FMT1 .
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If two are given, they set
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.Ev LD_TRACE_LOADED_OBJECTS_FMT1
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and
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.Ev LD_TRACE_LOADED_OBJECTS_FMT2 ,
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respectively.
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See
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.Xr rtld 1
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for details, including a list of recognized conversion characters.
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.Pp
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The
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.Fl a
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option displays the list of all objects that are needed by each loaded
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object.
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This option does not work with
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.Xr a.out 5
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binaries.
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.Pp
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The
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.Fl v
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option displays a verbose listing of the dynamic linking headers
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encoded in the executable.
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See the source code and include
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files for the definitive meaning of all the fields.
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.Sh SEE ALSO
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.Xr ld 1 ,
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.Xr nm 1 ,
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.Xr rtld 1
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.Sh HISTORY
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A
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.Nm
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utility first appeared in SunOS 4.0, it appeared in its current form in
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.Fx 1.1 .
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.Pp
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The
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.Fl v
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support is based on code written by
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.An John Polstra Aq jdp@polstra.com
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