.\"	$NetBSD: rump_wmd.1,v 1.3 2014/01/28 14:02:54 pooka Exp $
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.Dd January 28, 2014
.Dt RUMP_WMD 1
.Os
.Sh NAME
.Nm rump_wmd
.Nd Resolve rump kernel component dependencies
.Sh SYNOPSIS
.Nm
.Op Fl hv
.Op Fl L Ar dir
.Fl l Ar component
.Sh DESCRIPTION
The
.Nm
utility can be used to resolve the link dependencies of rump kernel
components.
This functionality is useful when desiring to run a rump kernel with
a given set of drivers, but not being sure what the dependencies of
those drivers are.
The output of
.Nm
is accepted as command line input by
.Xr rump_server 1 .
.Pp
The command line options are:
.Bl -tag -width indent
.It Fl h
Print the usage.
.It Fl L Ar dir
By default, rump kernel components in
.Pa /usr/lib
are examined.
If this option is supplied, components in
.Ar dir
are examined instead.
.It Fl v
Increase debug output from the utility.
This option may be given multiple times.
.El
.Pp
The desired components are given using
.Fl l Ar component .
This parameter may be specified multiple time and must be the last
set of parameters.
.Sh EXAMPLES
Resolve dependencies for FFS:
.Bd -literal -offset indent
$ rump_wmd -lrumpfs_ffs
DEBUG0: Searching component combinations. This may take a while ...
DEBUG0: Found a set
-lrumpdev -lrumpdev_disk -lrumpvfs -lrumpfs_ffs
.Ed
.Pp
Resolve dependencies for NFS, use IPv6 networking and the virtif
network interface:
.Bd -literal -offset indent
$ rump_wmd -lrumpfs_nfs -lrumpnet_netinet6 -lrumpnet_virtif
DEBUG0: Searching component combinations. This may take a while ...
DEBUG0: Found a set
-lrumpnet -lrumpnet_net -lrumpvfs -lrumpfs_nfs -lrumpnet_netinet6 -lrumpnet_virtif
.Ed
.Sh SEE ALSO
.Xr rump_server 1
.Sh CAVEATS
Since
.Nm
uses trial-and-error brute force resolution, it runs somewhat slow.
If several seconds are spent for dependency resolution, the benefit of
a rump kernel booting in 10ms is somewhat lost.
Caching the output is highly recommended.
.Sh FUN FACTS
.Nm
is short for "rump, where's my dependency".