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NAME    [Toc]    [Back]

     release -- release building infrastructure

DESCRIPTION    [Toc]    [Back]

     FreeBSD provides a complete build environment suitable for users to make
     full releases of the FreeBSD operating system.  All of the tools necessary
 to build a release are available from the CVS repository in
     src/release.  A complete release can actually be built with only a single
     command, including the creation of ISO images suitable for burning to CDROM,
 installation floppies, and an FTP install directory.	This command
     is aptly named ``make release''.

     Before attempting to build a release, the user is expected to be familiar
     with the contents of build(7), and should have experience upgrading systems
 from source with ``make world''.  The release build process requires
     that /usr/obj be populated with the output of ``make buildworld''.  This
     is necessary so that the object files for a complete system can be
     installed into a clean chroot(8) environment.  The release procedure also
     requires that the md(4) (memory disk) device driver be present in the
     kernel (either by being compiled in or available as a module).

     This document does not cover source code management, quality assurance,
     or other aspects of the release engineering process.

TARGETS    [Toc]    [Back]

     The release makefile (src/release/Makefile) is fairly abstruse.  Most
     developers will only be concerned with the release target.

     release	Uses ``make installworld'' to install a clean system into a
		chroot(8) environment on the file system.  Checks out the
		specified version of the source code and then rebuilds the
		entire system in the clean environment with ``make world''.
		The detailed steps that follow are then executed to package up
		the different distributions, build the installation floppy
		disks, build release documentation, and so on.

		This target must be built as root with the kern.securelevel
		sysctl set to -1 (the default).

     rerelease	Assumes that the output of a release build has been manually
		modified, and performs the minimal number of steps to rebuild
		the release using the intermediate output of the previous
		``make release''.

     floppies	Generate a new set of boot and fixit floppies.	This will call
		the release.5, release.9, and release.10 targets to re-generate
 the floppy images of a previous ``make release''.  This is
		most often used to build custom boot floppies.

     Targets called by ``make release'':

     release.1	 Cleans out the ${CHROOTDIR}/R directory and uses mtree(8) to
		 build the directory hierarchy for the system.

     release.2	 Installs the system into the distribution directories.

     release.3	 Builds and installs into the ``base'' distribution non-crypto
		 versions of some tools.

     release.4	 Makes and installs the GENERIC kernel.

     release.5	 Uses crunchgen(1) to build ``crunched'' binaries to live on
		 the installation floppies.

     release.6	 Builds synthetic distributions, and cleans up the previously
		 built distribution trees.

     release.7	 Creates tarballs of the assembled distribution trees.

     release.8	 Makes source distributions.

     release.9	 Creates the MFS root file systems.

     release.10  Creates the boot, MFS root, and fixit floppies.

     ftp.1	 Sets up a suitable area for FTP installations in

     cdrom.1	 Sets up a suitable area to build CD-ROM images in

     iso.1	 Builds two ISO images (installation and ``live'' file system)
		 from the CD-ROM release area (disabled by default, see
		 MAKE_ISOS below).

		 Fetches distfiles needed during the release build that are
		 not already in RELEASEDISTFILES.

     doc.1	 Builds all of the necessary tools to turn the FreeBSD Documentation
 Project source documents (SGML, XML) into HTML and
		 text documents that will accompany the release.  Also, builds
		 and installs the actual user documentation.  This includes
		 the Handbook, FAQ, articles, and so on.

     doc.2	 Builds the release documentation.  This includes the release
		 notes, hardware guide, and installation instructions.

ENVIRONMENT    [Toc]    [Back]

     Variables that must be specified:

     BUILDNAME	The name of the release to be built.  This is used to set the
		RELEASE value in sys/conf/newvers.sh, which affects the output
		of uname(1).

     CHROOTDIR	The directory to be used as the chroot(8) environment for the
		entire release build.  This file system should have at least
		2.3 gigabytes of free space on the i386 architecture.

     CVSROOT	The location of the FreeBSD CVS repository.  This path name is
		in reference to the real system root, not the root of the
		chroot(8) directory tree.

     Optional variables:

     CVSCMDARGS 	   Additional arguments for cvs(1) checkout and update
			   commands.  For example, setting this variable to
			   ``-D '01/01/2002 00:00:00 GMT''' for ``make
			   release'' or ``make rerelease'' will ask cvs(1) to
			   check out or update sources as of 00:00:00 GMT,
			   January 1 2002, respectively.

     DOC_LANG		   The list of languages and encodings the SGML-based
			   documentation should be built for.  If not set, the
			   documentation is built for all available languages.

     DOCRELEASETAG	   The CVS tag to use when checking out the documentation
 tree.  Usually, the head of the documentation
			   tree is used by default.  If RELEASETAG specifies a
			   release tag, then the associated release version is
			   used as the default instead.

     EXTLOCALDIR	   The directory that will be copied to

     KERNEL_FLAGS	   The contents of this variable are passed to make(1)
			   when building kernels during the release build.
			   For example, setting this variable to ``-j 4'' will
			   instruct make(1) to execute up to four processes at
			   a time.

     KERNELS		   Specifies a list of additional kernel configurations
 to compile and install into the ``base'' distribution.
  Each kernel is installed into
			   /boot/<config> so that it can be booted from the
			   loader via ``boot <config>''.

     LOCAL_PATCHES	   Patch files against /usr/src that will be applied
			   in the chroot(8) environment before the release
			   build begins.

     PATCH_FLAGS	   Arguments for the patch(1) command used to apply
			   LOCAL_PATCHES patch file.

     LOCAL_SCRIPT	   A script that will be run in the chroot(8) environment
 immediately after any local patches are

     MAKE_ISOS		   If defined, bootable ISO CD-ROM images will be created
 from the contents of the CD-ROM stage directory.

     NOCDROM		   If defined, the CD-ROM stage directories will not
			   be created.

     NODOC		   If defined, the SGML-based documentation from the
			   FreeBSD Documentation Project will not be built.
			   However, the ``doc'' distribution will still be
			   created with the minimal documentation set provided
			   in src/share/doc.

     NO_FLOPPIES	   If defined, no boot and fixit floppy disk images
			   will be created.

     NOPORTS		   If defined, the Ports Collection will be omitted
			   from the release.

     NOPORTREADMES	   If defined, readme files will not be created for
			   each individual port in the Ports Collection.  The
			   default behavior is for ``make release'' to run
			   ``make readmes'' from ${CHROOTDIR}/usr/ports, which
			   can be a very time consuming operation.

     PORTSRELEASETAG	   The CVS tag to use when checking out the ports
			   tree.  Usually, the head of the ports tree is used
			   by default.	If RELEASETAG specifies a release tag,
			   then the associated release version is used as the
			   default instead.

     NO_PREFETCHDISTFILES  If this variable is defined, then distfiles needed
			   during the release build will not be downloaded
			   prior to entering the chroot(8) environment.  Note
			   that if NO_PREFETCHDISTFILES is not set, the fetching
 is done after any distfiles are obtained via

     RELEASEDISTFILES	   The directory where the distribution files for
			   ports required by the release build can be found.
			   This may save a significant amount of time over
			   downloading the distfiles through a slow link.

     RELEASENOUPDATE	   If this variable is defined for ``make rerelease'',
			   the source code will not be updated with ``cvs

     RELEASETAG 	   The CVS tag corresponding to the release that is to
			   be built.  If undefined, the release will be built
			   from the HEAD of the CVS tree (a ``-CURRENT

     TARGET_ARCH	   The target machine processor architecture.  This is
			   analogous to the ``uname -p'' output.  Set this to
			   cross-build for a different architecture.

     TARGET		   The target hardware platform.  This is analogous to
			   the ``uname -m'' output.  This is necessary to
			   cross-build some target architectures.  For example,
 cross-building for PC98 machines requires
			   TARGET_ARCH=i386 and TARGET=pc98.

     WORLDDIR		   The directory where ``make buildworld'' was run;
			   defaults to ${.CURDIR}/.. which usually points to

     WORLD_FLAGS	   The contents of this variable are passed to make(1)
			   when building world during the release build.  For
			   example, setting this variable to ``-j 4'' will
			   instruct make(1) to execute up to four processes at
			   a time.

FILES    [Toc]    [Back]


EXAMPLES    [Toc]    [Back]

     The following sequence of commands was used to build the FreeBSD 4.5

	   cd /usr
	   cvs co -rRELENG_4_5_0_RELEASE src
	   cd src
	   make buildworld
	   cd release
	   make release CHROOTDIR=/local3/release BUILDNAME=4.5-RELEASE \
	     CVSROOT=/host/cvs/usr/home/ncvs RELEASETAG=RELENG_4_5_0_RELEASE

     After running these commands, a complete system suitable for FTP or CDROM
 distribution is available in the /local3/release/R directory.

     The following sequence of commands can be used to build a ``-CURRENT
     snapshot'' of a locally modified source tree:

	   cd /usr/src
	   cvs diff -u > /path/to/local.patch
	   make buildworld
	   cd release
	   make release CHROOTDIR=/local3/release BUILDNAME=5.0-CURRENT \
	     CVSROOT=/host/cvs/usr/home/ncvs LOCAL_PATCHES=/path/to/local.patch

SEE ALSO    [Toc]    [Back]

     cc(1), crunchgen(1), cvs(1), install(1), make(1), patch(1), uname(1),
     md(4), drivers.conf(5), make.conf(5), build(7), ports(7), chroot(8),
     mtree(8), sysctl(8)

     FreeBSD Release Engineering,

     FreeBSD Release Engineering of Third Party Packages,

     FreeBSD Developers' Handbook,

HISTORY    [Toc]    [Back]

     FreeBSD 1.x used a manual checklist, compiled by Rod Grimes, to produce a
     release.  Apart from being incomplete, the list put a lot of specific
     demands on available file systems and was quite torturous to execute.

     As part of the FreeBSD 2.0 release engineering effort, significant effort
     was spent getting src/release/Makefile into a shape where it could at
     least automate most of the tediousness of building a release in a sterile

     With its almost 1000 revisions spread over multiple branches, the cvs(1)
     log of src/release/Makefile contains a vivid historical record of some of
     the hardships release engineers go through.

AUTHORS    [Toc]    [Back]

     src/release/Makefile was originally written by Rod Grimes, Jordan
     Hubbard, and Poul-Henning Kamp.  This manual page was written by Murray
     Stokely <murray@FreeBSD.org>.

BUGS    [Toc]    [Back]

     Infrastructure changes are occassionally made to the FreeBSD documentation
 set in such a way that release builds on security branches can fail.
     To work around this, release builds can be made to checkout the documentation
 from the last fully supported release of FreeBSD.  For example:


FreeBSD 5.2.1			March 12, 2002			 FreeBSD 5.2.1
[ Back ]
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