.\"	$OpenBSD: release.8,v 1.55 2008/06/22 20:54:51 ajacoutot Exp $
.\"
.\"	Copyright (c) 2000 Marco S. Hyman
.\"
.\"	Permission to copy all or part of this material for any purpose is
.\"	granted provided that the above copyright notice and this paragraph
.\"	are duplicated in all copies.  THIS SOFTWARE IS PROVIDED ``AS IS''
.\"	AND WITHOUT ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, WITHOUT
.\"	LIMITATION, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
.\"	FOR A PARTICULAR PURPOSE.
.\"
.Dd $Mdocdate: June 22 2008 $
.Dt RELEASE 8
.Os
.Sh NAME
.Nm release
.Nd building a FabBSD release
.Sh DESCRIPTION
There are several steps necessary to build a system release.
They are:
.Pp
.Bl -enum -compact -offset indent
.It
Update sources.
.It
Build and install a new kernel.
.It
Build a new system.
.It
Make and validate the system release.
.It
Make the third party packages.
.El
.Pp
The following sections describe each of the required steps in detail.
.Pp
Commands to be run as a user with write permissions on the source and
ports trees
.Pf ( Ns Pa /usr/src
and
.Pa /usr/ports
respectively)
are preceded by a dollar sign
.Pq Sq $ .
Commands that must be run as the superuser are preceded by a hash mark
.Pq Sq # .
.Ss 1. Update sources
A
.Nm
should always start from a known set of
.Em coherent
sources.
The easiest way to ensure that the sources are complete and coherent
is to check them out using
.Xr svn 1 :
.Bd -literal -offset indent
$ cd /usr/src && svn up
$ cd PORTSPATH && svn up
.Ed
.Pp
Replace
.Va PORTSPATH
with the path to your ports tree sources, typically
.Pa /usr/ports .
The above commands assume an existing source tree.
.Pp
See
.Pa http://www.fabbsd.org/download.html
for instructions on fetching the sources for the first time.
.Ss 2. Build and install a new kernel
For safety, you should always build and install a new kernel before
building the programs that will use the kernel.
This ensures that any new system calls, for example, will be present
when needed.
To build a kernel the steps are:
.Pp
Change the current working directory.
.Va ${ARCH}
is the architecture of your machine, e.g.\&
.Li i386 .
.Pp
.Dl $ cd /sys/arch/${ARCH}/conf
.Pp
Edit the kernel configuration file.
.Va ${NAME}
is your kernel configuration file.
You should
.Em not
edit
.Li GENERIC ;
create your own kernel configuration if you need to make modifications.
If using
.Li GENERIC
you can skip this step.
And yes, you may use
.Xr vi 1 ,
.Xr mg 1 ,
or any other editor you choose.
.Pp
.Dl $ vi ${NAME}
.Pp
Build the kernel compilation directory and compile the kernel:
.Bd -literal -offset indent
$ config ${NAME}
$ cd ../compile/${NAME}
$ make clean && make depend && make
.Ed
.Pp
(In this instance
.Li "make clean"
is your friend.)
.Pp
Replace the old kernel and reboot.
The current kernel is copied to
.Pa /obsd
and the new kernel to
.Pa /bsd .
.Bd -literal -offset indent
$ su
# make install
# shutdown -r now
.Ed
.Pp
If the system does not come up you can boot using
.Pa /obsd .
.Ss 3. Build a new system
Now that you are running your new kernel you can build a new system.
It's safer (but slower) to remove your object directories and re-create
them before the build.
The steps are:
.Pp
Move all your existing object files out of the way and then remove
them in the background:
.Bd -literal -offset indent
$ cd /usr/obj && mkdir -p .old && sudo mv * .old && \e
	sudo rm -rf .old &
.Ed
.Pp
Re-build your obj directories:
.Pp
.Dl $ cd /usr/src && nice make obj
.Pp
Create directories that might be missing:
.Pp
.Dl $ cd /usr/src/etc && env DESTDIR=/ sudo make distrib-dirs
.Pp
Begin the build:
.Bd -literal -offset indent
$ su
# cd /usr/src && nice make build
.Ed
.Pp
If you have set
.Xr sudo 8
up, you can combine this with the previous step using the command
.Pp
.Dl $ nice make SUDO=sudo build
.Pp
Update
.Pa /etc ,
.Pa /var ,
and
.Pa /dev/MAKEDEV ,
either by hand or using
.Xr sysmerge 8 .
.Pp
At this point your system is up-to-date and running the code that you
are going to make into a release.
.Ss 4. Make and validate the system release
The system release consists of a generic kernel, one
.Tn CD-ROM
and two floppy bootable file systems, the release
.Sq tarballs ,
installation instructions, and checksum files.
.Pp
The release process requires two work areas.
They are:
.Bl -tag -width "RELEASEDIR "
.It Va DESTDIR
This is the name of a directory which will be the root of a complete FabBSD
installation, thus it must be on a disk partition large enough to store the
entire operating system (less the X Window System and any third party
.Sq packages ) .
The directory can be removed once the release is created.
In any case the release process ensures the directory is empty before starting.
.It Va RELEASEDIR
This is the name of a directory where the release output files are stored.
The following process will create the directory if necessary.
.It " "
.Sy Warning :
.Va DESTDIR
and
.Va RELEASEDIR
must not refer to any directory with
.Pa /mnt
in its path, as
.Pa /mnt
is used in the release generation process.
Additionally the first
.Xr svnd 4
device, svnd0,
is also used and must not be configured.
.El
.Pp
The floppy and
.Tn CD-ROM
.Pa RAMDISK
images require a special tool which is created first.
The release process is:
.Pp
You must be root to create a release:
.Pp
.Dl $ su
.Pp
Create the special tools needed to build the release:
.Bd -literal -offset indent
# cd /usr/src/distrib/crunch && make obj && make depend \e
	&& make all && make install
# export DESTDIR=your-destdir; export RELEASEDIR=your-releasedir
# test -d ${DESTDIR} && mv ${DESTDIR} ${DESTDIR}- && \e
	rm -rf ${DESTDIR}- &
# mkdir -p ${DESTDIR} ${RELEASEDIR}
.Ed
.Pp
The last two steps ensure
.Va ${DESTDIR}
exists as an empty directory and
.Va ${RELEASEDIR}
exists.
.Va ${RELEASEDIR}
need not be empty.
.Pp
Check that the contents of
.Va ${DESTDIR}
pretty much match the contents of the release
.Sq tarballs :
.Bd -literal -offset indent
# cd /usr/src/etc && nice make release
# cd /usr/src/distrib/sets && sh checkflist
# unset RELEASEDIR DESTDIR
.Ed
.Pp
At this point you have most of a FabBSD release.
.Ss 5. Make the third party packages
The
.Sq ports
sub-system of contributed applications is described in
.Xr ports 7 .
For ease of installation ports can be pre-compiled into
.Sq packages
which can then be installed on multiple machines using
.Xr pkg_add 1 .
Packages are created by selecting an application to build
(we'll call this one CATEGORY/PORT) and then running the following:
as root:
.Bd -literal -offset indent
$ cd /usr/ports/CATEGORY/PORT
$ su
# make package
.Ed
.Pp
That's all there is to it.
.Sh SEE ALSO
.Xr pkg_add 1 ,
.Xr ports 7 ,
.Xr sudo 8 ,
.Xr svn 1 ,
.Xr sysmerge 8
.Sh HISTORY
This document first appeared in
.Ox 2.8 .