169 lines
4.8 KiB
Groff
169 lines
4.8 KiB
Groff
.\" Copyright (c) 1980, 1991, 1993
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.\" The Regents of the University of California. All rights reserved.
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.\"
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.\" Redistribution and use in source and binary forms, with or without
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.\" modification, are permitted provided that the following conditions
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.\" are met:
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.\" 1. Redistributions of source code must retain the above copyright
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.\" notice, this list of conditions and the following disclaimer.
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.\" 2. Redistributions in binary form must reproduce the above copyright
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.\" notice, this list of conditions and the following disclaimer in the
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.\" documentation and/or other materials provided with the distribution.
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.\" 3. All advertising materials mentioning features or use of this software
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.\" must display the following acknowledgement:
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.\" This product includes software developed by the University of
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.\" California, Berkeley and its contributors.
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.\" 4. 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
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.\" without specific prior written permission.
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.\"
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.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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.\" SUCH DAMAGE.
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.\"
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.\" from: @(#)config.8 8.2 (Berkeley) 4/19/94
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.\" $Id: config.new.8,v 1.4 1994/06/22 10:44:07 pk Exp $
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.\"
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.Dd April 19, 1994
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.Dt CONFIG.NEW 8
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.Os BSD 4
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.Sh NAME
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.Nm config.new
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.Nd build kernel compilation directories
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.Sh SYNOPSIS
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.Nm config.new
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.Op Fl p
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.Ar system-name
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.Sh DESCRIPTION
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.Pp
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This is the new version of the
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.Nm config
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program.
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.\"It understands the more modern autoconfiguration scheme
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.\"used on the SPARC and i386 platforms.
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.\"The old version of config is still used with the
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.\"HP300, DECstation, and derivative platforms.
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.\"Only the version of
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.\".Nm config
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.\"applicable to the architecture that you are running
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.\"will be installed on your machine.
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.Pp
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.Nm Config.new
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builds a set of configuration files from the file
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.Ar system-name ,
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which describes
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the system to configure.
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.Pp
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.Nm Config.new
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should run from the
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.Pa conf
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subdirectory of the top-level machine-specific directory
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of the system source (usually
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.Pa /sys/arch/MACHINE/conf ,
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where
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.Pa MACHINE
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is one of
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.Pa vax ,
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.Pa tahoe ,
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.Pa hp300 ,
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and so forth).
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.Nm Config.new
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assumes the directory
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.Pa ../compile
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exists; it places all output files in a subdirectory there,
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creating the subdirectory if necessary.
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The subdirectory name is taken from the
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.Ar system-name ;
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thus, configuring with
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.Dq Li config.new PICKLE
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will use the directory
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.Pa ../compile/PICKLE .
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.Pp
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If the
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.Fl p
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option is supplied,
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.Pa .PROF
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is appended to the compilation directory name, and
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.Nm config.new
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acts as if the lines
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.Dq Li makeoptions PROF="-pg"
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and
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.Dq Li options GPROF
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appeared in the configuration file.
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This will build a system that includes profiling code; see
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.Xr kgmon 8
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and
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.Xr gprof 1 .
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The
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.Fl p
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flag is expected to be used for
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.Dq one-shot
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profiles of existing systems;
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for regular profiling,
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it is probably wiser to make a separate configuration
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containing the
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.Li makeoptions
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line.
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.Pp
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The old undocumented
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.Fl g
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flag is no longer supported.
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Instead, use
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.Dq Li makeoptions DEBUG="-g"
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and (typically)
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.Dq Li options KGDB .
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.Pp
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The output of
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.Nm config.new
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consists of a number of files, principally
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.Pa ioconf.c ,
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a description of I/O devices that may be attached to the system; and a
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.Pa Makefile ,
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used by
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.Xr make 1
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in building the kernel.
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.Pp
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After running
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.Nm config.new ,
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it is wise to run
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.Dq Li make depend
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in the directory where the new makefile
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was created.
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.Nm Config.new
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prints a reminder of this when it completes.
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.Pp
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If
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.Nm config.new
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stops due to errors, the problems reported should be corrected and
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.Nm config.new
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should be run again.
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.Nm Config.new
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attempts to avoid changing the compilation directory
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if there are configuration errors,
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but this code is not well-tested,
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and some problems (such as running out of disk space)
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are unrecoverable.
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.Sh SEE ALSO
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The SYNOPSIS portion of each device in section 4.
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.Rs
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.%T "Building 4.4 BSD Systems with Config"
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.\" .%T "Device Support in 4.4BSD"
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.Re
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.sp
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.Xr config 8
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.Sh HISTORY
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The
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.Nm config
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command appeared in
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.Bx 4.1 .
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It was completely revised in
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.Bx 4.4 .
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