diff options
Diffstat (limited to 'usr.sbin/config/config.8')
| -rw-r--r-- | usr.sbin/config/config.8 | 95 |
1 files changed, 93 insertions, 2 deletions
diff --git a/usr.sbin/config/config.8 b/usr.sbin/config/config.8 index a41abd0214f..0a32e09280c 100644 --- a/usr.sbin/config/config.8 +++ b/usr.sbin/config/config.8 @@ -1,4 +1,4 @@ -.\" $OpenBSD: config.8,v 1.9 1999/05/23 14:11:32 aaron Exp $ +.\" $OpenBSD: config.8,v 1.10 1999/07/22 19:24:52 deraadt Exp $ .\" $NetBSD: config.8,v 1.10 1996/08/31 20:58:16 mycroft Exp $ .\" .\" Copyright (c) 1980, 1991, 1993 @@ -173,6 +173,97 @@ 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 EXAMPLE +A custom kernel is built in the following way. +.Pp +To compile your own kernel from a non-writeable media (such as a CDROM) +mounted on +.Pa /usr/src , +do the following: +.Sm off +.Bd -literal -offset indent +.Li #\ Xo +.Ic cd\ / +.Ar somedir +.Xc +.Li #\ Xo +.Ic cp\ /usr/src/sys/arch/ +.Ar somearch +.Ic /conf/ +.Ar SOMEFILE +.Ic \ . +.Xc +.Li #\ Xo +.Ic vi\ \& +.Ar SOMEFILE +.No \ \ \ (to\ make\ any\ changes) +.Xc +.Li #\ Xo +.Ic config\ -s\ /usr/src/sys\ -b\ .\ \& +.Ar SOMEFILE +.Xc +.Li #\ Xo +.Ic make +.Xc +.Ed +.Sm on +.Pp +To compile a kernel inside a writable source tree, do the following: +.Sm off +.Bd -literal -offset indent +.Li #\ Xo +.Ic cd\ /usr/src/sys/arch/ +.Ar somearch +.Ic /conf +.Xc +.Li #\ Xo +.Ic vi\ \& +.Ar SOMEFILE +.No \ \ \ (to\ make\ any\ changes) +.Xc +.Li #\ Xo +.Ic config\ \& +.Ar SOMEFILE +.Xc +.Li #\ Xo +.Ic cd\ ../compile/ +.Ar SOMEFILE +.Xc +.Li #\ Xo +.Ic make +.Xc +.Ed +.Sm on +.Pp +where +.Ar somedir +is a writable directory, +.Ar somearch +is the architecture (e.g. +.Ic i386 ) , +and +.Ar SOMEFILE +should be a name indicative of a particular configuration (often +that of the hostname). +.Nm config +will warn you if a +.Ar "make clean" +is required; +you can also do a +.Ic make depend +so that you will have dependencies there the next time you do a compile. +.Pp +After either of these two methods, you can place the new kernel (called +.Pa bsd ) +in +.Pa / +(i.e. +.Pa /bsd ) +and the system will boot it next time. +Most people save their backup kernels as +.Pa /bsd.1 , +.Pa /bsd.2 , +etc. .Sh SEE ALSO .Xr options 4 .Pp @@ -181,7 +272,7 @@ The SYNOPSIS portion of each device in section 4. .%T "Building 4.4 BSD Systems with Config" .\" .%T "Device Support in 4.4BSD" .Re -.sp +.Pp .Sh HISTORY The .Nm config |