195 lines
5.3 KiB
Groff
195 lines
5.3 KiB
Groff
.\" $NetBSD: config.8,v 1.15 1999/03/22 18:43:51 garbled Exp $
|
|
.\"
|
|
.\" Copyright (c) 1980, 1991, 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
|
|
.\" 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.
|
|
.\" 3. All advertising materials mentioning features or use of this software
|
|
.\" must display the following acknowledgement:
|
|
.\" This product includes software developed by the University of
|
|
.\" California, Berkeley and its contributors.
|
|
.\" 4. Neither the name of the University nor the names of its contributors
|
|
.\" may be used to endorse or promote products derived from this software
|
|
.\" without specific prior written permission.
|
|
.\"
|
|
.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``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 REGENTS OR CONTRIBUTORS 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.
|
|
.\"
|
|
.\" from: @(#)config.8 8.2 (Berkeley) 4/19/94
|
|
.\"
|
|
.Dd April 19, 1994
|
|
.Dt CONFIG 8
|
|
.Os
|
|
.Sh NAME
|
|
.Nm config
|
|
.Nd build kernel compilation directories
|
|
.Sh SYNOPSIS
|
|
.Nm
|
|
.Op Fl b Ar builddir
|
|
.Op Fl s Ar srcdir
|
|
.Op Fl pv
|
|
.Op Ar config-file
|
|
.Sh DESCRIPTION
|
|
.Nm
|
|
creates a kernel build directory from the file
|
|
.Ar config-file ,
|
|
which describes the system to configure.
|
|
.Pp
|
|
There are several different ways to run the
|
|
.Nm
|
|
program. The traditional way is to run
|
|
.Nm
|
|
from the
|
|
.Pa conf
|
|
subdirectory of the machine-specific directory of the system source
|
|
(usually
|
|
.Pa /sys/arch/MACHINE/conf ,
|
|
where
|
|
.Pa MACHINE
|
|
is one of
|
|
.Pa vax ,
|
|
.Pa hp300 ,
|
|
and so forth), and to specify as the
|
|
.Ar config-file
|
|
the name of a file located in that directory.
|
|
.Nm
|
|
will by default create files in the directory
|
|
.Pa ../compile/SYSTEMNAME ,
|
|
where
|
|
.Pa SYSTEMNAME
|
|
is the last path component of
|
|
.Ar config-file .
|
|
.Nm
|
|
will assume that the top-level kernel source directory is located four
|
|
directories above the build directory.
|
|
.Pp
|
|
Another way is to create the build directory yourself, place the
|
|
configuration file in the build directory with the name
|
|
.Pa CONFIG ,
|
|
and run
|
|
.Nm
|
|
from within the build directory without specifying a
|
|
.Ar config-file .
|
|
.Nm
|
|
will then by default create files in the current directory. If you
|
|
run
|
|
.Nm
|
|
this way, you must specify the location of the top-level kernel source
|
|
directory using the
|
|
.Fl s
|
|
option or by using the
|
|
.Dq Li source
|
|
directive at the beginning of the system configuration file.
|
|
.Pp
|
|
Finally, you can specify the build directory for
|
|
.Nm
|
|
and run it from anywhere. You can specify a build directory with the
|
|
.Fl b
|
|
option or by using the
|
|
.Dq Li build
|
|
directive at the beginning of the system configuration file. You must
|
|
specify the location of the top-level kernel source directory if you
|
|
specify a build directory.
|
|
.Pp
|
|
If the
|
|
.Fl p
|
|
option is supplied,
|
|
.Pa .PROF
|
|
is appended to the default compilation directory name, and
|
|
.Nm
|
|
acts as if the lines
|
|
.Dq Li makeoptions PROF="-pg"
|
|
and
|
|
.Dq Li options GPROF
|
|
appeared in the configuration file.
|
|
This will build a system that includes profiling code; see
|
|
.Xr kgmon 8
|
|
and
|
|
.Xr gprof 1 .
|
|
The
|
|
.Fl p
|
|
flag is expected to be used for
|
|
.Dq one-shot
|
|
profiles of existing systems;
|
|
for regular profiling,
|
|
it is probably wiser to make a separate configuration
|
|
containing the
|
|
.Li makeoptions
|
|
line.
|
|
.Pp
|
|
The
|
|
.Fl v
|
|
option causes
|
|
.Nm
|
|
to be somewhat more verbose by enabling certain warning messages.
|
|
.Pp
|
|
The old undocumented
|
|
.Fl g
|
|
flag is no longer supported.
|
|
Instead, use
|
|
.Dq Li makeoptions DEBUG="-g"
|
|
and (typically)
|
|
.Dq Li options KGDB .
|
|
.Pp
|
|
The output of
|
|
.Nm
|
|
consists of a number of files, principally
|
|
.Pa ioconf.c ,
|
|
a description of I/O devices that may be attached to the system; and a
|
|
.Pa Makefile ,
|
|
used by
|
|
.Xr make 1
|
|
in building the kernel.
|
|
.Pp
|
|
After running
|
|
.Nm "" ,
|
|
it is wise to run
|
|
.Dq Li make depend
|
|
in the directory where the new makefile
|
|
was created.
|
|
.Nm
|
|
prints a reminder of this when it completes.
|
|
.Pp
|
|
If
|
|
.Nm
|
|
stops due to errors, the problems reported should be corrected and
|
|
.Nm
|
|
should be run again.
|
|
.Nm
|
|
attempts to avoid changing the compilation directory
|
|
if there are configuration errors,
|
|
but this code is not well-tested,
|
|
and some problems (such as running out of disk space)
|
|
are unrecoverable.
|
|
.Sh SEE ALSO
|
|
The SYNOPSIS portion of each device in section 4.
|
|
.Rs
|
|
.%T "Building 4.4 BSD Systems with Config"
|
|
.\" .%T "Device Support in 4.4BSD"
|
|
.Re
|
|
.sp
|
|
.Xr options 4
|
|
.Sh HISTORY
|
|
The
|
|
.Nm
|
|
command appeared in
|
|
.Bx 4.1 .
|
|
It was completely revised in
|
|
.Bx 4.4 .
|