freebsd-dev/usr.bin/lorder/lorder.1

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.\" Copyright (c) 1990, 1993
.\" The Regents of the University of California. All rights reserved.
.\"
.\" Redistribution and use in source and binary forms, with or without
.\" modification, are permitted provided that the following conditions
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.\" 1. Redistributions of source code must retain the above copyright
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.\" 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.
.\" 3. Neither the name of the University nor the names of its contributors
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.\" may be used to endorse or promote products derived from this software
.\" without specific prior written permission.
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.\" @(#)lorder.1 8.2 (Berkeley) 4/28/95
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.\" $FreeBSD$
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.\"
.Dd August 14, 2015
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.Dt LORDER 1
.Os
.Sh NAME
.Nm lorder
.Nd list dependencies for object files
.Sh SYNOPSIS
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.Nm
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.Ar
.Sh DESCRIPTION
The
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.Nm
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utility uses
.Xr nm 1
to determine interdependencies in the list of object files
and library archives
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specified on the command line.
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The
.Nm
utility outputs a list of file names where the first file contains a symbol
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which is defined by the second file.
.Pp
The output is normally used with
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.Xr tsort 1
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when a library is created to determine the optimum ordering of the
object modules so that all references may be resolved in a single
pass of the loader.
.Pp
When linking static binaries,
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.Nm
and
.Xr tsort 1
can be used to properly order library archives automatically.
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.Sh ENVIRONMENT
.Bl -tag -width indent
.It Ev NM
Path to the
.Xr nm 1
binary, defaults to
.Dq Li nm .
.It Ev NMFLAGS
Flags to pass to
.Xr nm 1 .
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.El
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.Sh EXAMPLES
.Bd -literal -offset indent
ar cr library.a `lorder ${OBJS} | tsort`
cc -o foo ${OBJS} `lorder ${STATIC_LIBS} | tsort`
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.Ed
.Sh SEE ALSO
.Xr ar 1 ,
.Xr ld 1 ,
.Xr nm 1 ,
.Xr ranlib 1 ,
.Xr tsort 1
.Sh HISTORY
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A
.Nm
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utility appeared in
.At v7 .