1 .\" Copyright (c) 2002 Murray Stokely <murray@FreeBSD.org>
2 .\" All rights reserved.
4 .\" Redistribution and use in source and binary forms, with or without
5 .\" modification, are permitted provided that the following conditions
7 .\" 1. Redistributions of source code must retain the above copyright
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32 .Nd "release building infrastructure"
35 provides a complete build environment suitable for users to make
39 All of the tools necessary to build a release are available from the
41 source code repository in
43 A complete release can actually be built with only a single command,
44 including the creation of ISO images suitable for burning to CD-ROM,
45 memory stick images, and an FTP install directory.
46 This command is aptly named
47 .Dq Li "make release" .
49 For some users, it may be desirable to provide an absolutely clean
50 build environment, with no local modifications to the source tree or to
52 and with clean checkouts of specific versions of the doc, src, and ports
54 For this purpose, a script
55 .Pq Pa src/release/release.sh
56 is provided to automate these checkouts and then execute
61 Before attempting to build a release, the user is expected to be
62 familiar with the contents of
64 and should have experience upgrading systems from source.
66 The release build process requires that
68 be populated with the output of
69 .Dq Li "make buildworld"
71 .Dq Li "make buildkernel" .
72 This is necessary to provide the object files for the release or, when
75 so that the object files for a complete system can be installed into a clean
79 If the target release build is for a different architecture or machine type,
84 variables must be used.
87 variables for more information.
89 The release procedure on some architectures may also require that the
91 (memory disk) device driver be present in the kernel
92 .Pq either by being compiled in or available as a module .
94 This document does not cover source code management, quality
95 assurance, or other aspects of the release engineering process.
96 .Sh CLEAN RELEASE GENERATION
99 are produced in a totally clean environment to
100 ensure consistency between the versions of the src, ports, and doc trees
101 and to avoid contamination from the host system
102 .Po such as local patches, changes
107 This is accomplished using the wrapper script
108 .Pa src/release/release.sh .
111 .Op Fl c Ar release.conf
122 .Dq Li "make buildworld"
124 .Dq Li "make installworld"
129 .Dq Li "make release"
132 environment and places the result in
137 configuration file supports the following variables:
140 The directory within which the release will be built.
141 .It Va CHROOT_MAKEENV
144 arguments to pass through, which directly affect the
145 tuning of the build chroot.
149 host used to check out the various trees.
151 .Pa svn://svn.FreeeBSD.org .
171 The target machine type for cross-building a release.
173 The target machine architecture for cross-building a release.
175 For the supported list of
179 combinations, consult the output of
184 The target kernel configuration to use.
189 entries may be specified.
193 to use for the release build.
196 to prevent polluting the release with local system changes.
200 to use for the release build.
203 to prevent polluting the release with local system changes.
205 Additional flags to pass to
208 Additional flags to pass to
213 Defaults to setting the number of
217 to the number of CPUs available on a SMP-capable system.
219 Additional flags to pass to
224 Defaults to setting the number of
228 to half the number of CPUs available on a SMP-capable system.
230 Set to a non-empty value to skip the
237 distribution package from being created.
239 Set to a non-empty value to skip the
246 distribution package from being created.
247 Setting this also sets
250 Set to a non-empty value to include the
253 .It Va WITH_COMPRESSED_IMAGES
254 Set to a non-empty value to compress the release images with
258 images are not removed.
260 The command run to obtain the source trees.
262 .Qq Cm svn checkout .
263 .It Va CHROOTBUILD_SKIP
271 build environment setup are skipped.
272 This is intended solely for cases where the
274 userland are provided by alternate means.
279 variables are relevant only to release builds for embedded systems:
282 Set to a non-null value to enable functionality for embedded device
284 .Pq This option is considered highly experimental.
295 must also be defined.
296 When the build environment is created,
298 runs a separate build script located in an architecture-specific
300 .Pa src/release/${XDEV}/ .
302 Set to the list of any ports that are required for the target device
307 port is built by default.
309 Set to the source URL for the Crochet build tool.
311 Set to the subversion branch from
317 Set to the source URL of u-boot, if required.
319 Set to the subversion branch from
325 Set to the target directory within
328 .Va ${UBOOTSRC}/${UBOOTBRANCH} .
332 .Pq Pa src/release/Makefile
334 Most developers will only be concerned with the
339 .\" XXX: Some sort of introduction to this list? All the others have one.
340 .Bl -tag -width ".Cm packagesystem"
342 Meta-target to build all release media and distributions applicable to this
345 Copy all produced release media to
348 Builds installation CD-ROM images.
351 (memory disk) device driver be present in the kernel
352 (either by being compiled in or available as a module).
353 This target produces files called
359 Builds installation DVD-ROM images.
362 (memory disk) device driver be present in the kernel
363 (either by being compiled in or available as a module).
364 This target produces the
368 Builds an installation memory stick image named
370 Not applicable on all platforms.
374 device driver be present in the kernel
375 .Pq either by being compiled in or available as a module .
379 with the exception that the installation distribution sets
382 Creates a directory named
384 containing the distribution files used in network installations
385 and suitable for upload to an FTP mirror.
388 Major subtargets called by targets above:
389 .Bl -tag -width ".Cm packagesystem"
391 Generates all the distribution archives
392 .Pq base, kernel, ports, doc
393 applicable on this platform.
395 Builds a bootable installation system containing all the distribution files
398 target, and suitable for imaging by the
405 Builds the release documentation.
406 This includes the release notes,
407 hardware guide, and installation instructions.
408 Other documentation, such as the Handbook,
416 .Bl -tag -width ".Ev TARGET_ARCH"
418 Optional base name for generated media images
419 .Pq e.g., FreeBSD-9.0-RC2-amd64 .
420 Defaults to the output of
421 .Ic `uname -s`-`uname -r`-`uname -p`
424 Location of a directory containing the src tree.
425 By default, the directory
426 above the one containing the makefile
429 Location of a directory containing the ports tree.
432 If it is unset or cannot be found, ports will not be included in the release.
434 Location of a directory containing the doc tree.
437 If it is unset or cannot be found, most documentation will not be included in
442 If defined, the Ports Collection will be omitted from the release.
444 If set, do not include system source code in the release.
446 If defined, the XML-based documentation from the
448 Documentation Project will not be built.
451 distribution will still be created with the minimal documentation set
455 The target hardware platform.
456 This is analogous to the
459 This is necessary to cross-build some target architectures.
460 For example, cross-building for PC98 machines requires
461 .Ev TARGET_ARCH Ns = Ns Li i386
463 .Ev TARGET Ns = Ns Li pc98 .
466 defaults to the current hardware platform.
468 The target machine processor architecture.
469 This is analogous to the
472 Set this to cross-build for a different architecture.
475 defaults to the current machine architecture, unless
477 is also set, in which case it defaults to the appropriate
478 value for that platform.
479 Typically, one only needs to set
483 .Bl -tag -compact -width Pa
484 .It Pa /usr/doc/Makefile
485 .It Pa /usr/doc/share/mk/doc.project.mk
486 .It Pa /usr/ports/Mk/bsd.port.mk
487 .It Pa /usr/ports/Mk/bsd.sites.mk
488 .It Pa /usr/share/examples/etc/make.conf
489 .It Pa /usr/src/Makefile
490 .It Pa /usr/src/Makefile.inc1
491 .It Pa /usr/src/release/Makefile
492 .It Pa /usr/src/release/release.sh
493 .It Pa /usr/src/release/release.conf.sample
496 The following sequence of commands can be used to build a
497 .Dq "-CURRENT snapshot":
498 .Bd -literal -offset indent
500 svn co svn://svn.freebsd.org/base/head src
502 make buildworld buildkernel
505 make install DESTDIR=/var/freebsd-snapshot
508 After running these commands, all produced distribution files (tarballs
509 for FTP, CD-ROM images, etc.) are available in the
510 .Pa /var/freebsd-snapshot
513 The following sequence of commands can be used to build a
514 .Dq "-CURRENT snapshot"
515 in a clean environment, including ports and documentation:
516 .Bd -literal -offset indent
521 Optionally, a configuration file can be used customize the release build,
522 such as the subversion revision to use, the branch of the subversion tree for
527 .Bd -literal -offset indent
529 sh release.sh -c $HOME/release.conf
532 After running these commands, all prepared release files are available in the
535 The target directory can be changed by specifying the
543 .Xr svn 1 Pq Pa ports/devel/subversion ,
553 .%T "FreeBSD Release Engineering"
554 .%U http://www.FreeBSD.org/doc/en_US.ISO8859-1/articles/releng/
557 .%T "FreeBSD Release Engineering of Third Party Packages"
558 .%U http://www.FreeBSD.org/doc/en_US.ISO8859-1/articles/releng-packages/
561 .%T "FreeBSD Developers' Handbook"
562 .%U http://www.FreeBSD.org/doc/en_US.ISO8859-1/books/developers-handbook/
567 used a manual checklist, compiled by
569 to produce a release.
570 Apart from being incomplete, the list put a lot of specific demands on
571 available file systems and was quite torturous to execute.
575 release engineering effort, significant
576 effort was spent getting
577 .Pa src/release/Makefile
578 into a shape where it could at least automate most of the tediousness
579 of building a release in a sterile environment.
584 .Pa src/release/Makefile
585 was overhauled and the wrapper script
586 .Pa src/release/generate-release.sh
587 introduced to support the introduction of a new installer.
592 .Pa src/release/release.sh
593 was introduced to support per-build configuration files.
594 .Pa src/release/release.sh
595 is heavily based on the
596 .Pa src/release/generate-release.sh
599 At near 1000 revisions spread over multiple branches, the
602 .Pa src/release/Makefile
603 contains a vivid historical record of some
604 of the hardships release engineers go through.
606 .Pa src/release/Makefile
607 was originally written by
612 .An Poul-Henning Kamp .
614 This manual page was originally written by
615 .An Murray Stokely Aq murray@FreeBSD.org .
618 .An Nathan Whitehorn Aq nwhitehorn@FreeBSD.org
620 .Fa generate-release.sh
625 It was later updated by
626 .An Glen Barber Aq gjb@FreeBSD.org