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7 .\" 1. Redistributions of source code must retain the above copyright
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13 .\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND
14 .\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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25 .\" $FreeBSD: src/share/man/man7/build.7,v 1.19.2.1 2002/03/18 08:33:02 murray Exp $
32 .Nd information on how to build the system
36 system and applications is located in
38 This directory contains the
40 sources, which is loosely defined as the things required to rebuild
41 the system to a useful state.
42 It also contains the source for the system documentation, including
46 for more information on how to obtain the
50 Third party applications have to be built using the
55 has targets for obtaining the dports tree.
60 gives specifics on how to obtain the tree for building packages.
66 to build and install the things in that directory.
69 command in any directory or
70 subdirectory of those directories has the same effect as issuing the
71 same command in all subdirectories of that directory.
72 With no target specified, the things in that directory are just built.
73 The following list provides the names and actions for other targets:
74 .Bl -tag -width ".Cm install"
76 Removes any files created during the build process.
78 Installs the results of the build for this directory.
84 .Bl -tag -width ".Cm installworld-force"
86 Rebuild everything but the kernel.
90 but skip bootstrap, build and cross-build tool steps.
91 This target can be used for incremental upgrades once a full build of the
92 world has been done with
97 but also skip the depend step.
99 Just do the bootstrap, build and cross-build steps.
101 Install everything built by
103 as well as the rescue tools and the initial ramdisk if they do not exist
105 .It Cm installworld-force
108 This will install to a temporary directory, then copy the main binaries
109 and libraries with a static
113 and finally will issue a normal
117 It is a special case to be used on older systems as a last resort when
125 Rebuild the kernel and the kernel-modules.
127 Rebuild the kernel and the kernel-modules using native tools.
131 but do not clean out the obj modules.
132 This target can be used for incremental upgrades once a full
133 build of the kernel has been done with
135 .It Cm realquickkernel
138 but also skip the depend step.
140 Install the kernel and the kernel-modules.
141 .It Cm reinstallkernel
142 Reinstall the kernel and the kernel-modules.
150 The option -j hw.ncpu is added automatically to optimally utilize the system.
156 Perform certain operations that have to be done before
158 such as adding new users and groups.
159 This target will be automatically executed by
162 Upgrade the files in /etc and also setup the rest of the system for
166 Also, check for existence of objects being deprecated with the new installation.
168 Note that deprecated system libraries may still be linked from packages
171 or other 3rd party objects placed elsewhere.
172 The check tries to detect these dependencies, by default searching
174 Other places to search may be specified in
175 .Ev CHECK_DEPRECATED_DIRS
177 If defined, these directories will be searched in addition to default.
179 Install the statically linked rescue tools and the initial ramdisk built by
182 Manually archive binaries from installed world to location specified by
185 Delete archive created by
187 .It Cm backup-auto-clean
188 Delete archive created automatically during
191 Restore binaries from archive created by
193 .It Cm restoreworld-auto
194 Restore binaries from archive created automatically during
196 The archive location is specified by
200 .Bl -tag -width ".Ev MAKEOBJDIRPREFIX"
201 .It Ev TARGET_ARCH , TARGET_PLATFORM
202 The target machine processor architecture and hardware platform.
203 These have to be set for cross-building.
210 architecture known as AMD64, x86-64 or Intel 64, use:
211 .Bd -literal -offset indent
216 An existing directory to be the root of
217 the hierarchy where the resulting binaries will be
218 installed (the default is
220 .It Ev MAKEOBJDIRPREFIX
221 The directory hierarchy where the object files will be built (the default is
224 Used to override the path of
227 .Pa /etc/make.conf ) .
229 The name of one or more kernel configurations from which kernels should
230 be built (the default is
231 .Li X86_64_GENERIC ) .
233 The directory where the kernel configuration files are kept (the default is
234 .Pa /usr/src/sys/config ) .
236 Common suffix added to kernel and modules directory names, prefixed by
237 a single dot. For example,
238 .Bd -literal -offset indent
239 make DESTLABEL=test installkernel
243 .Pa /boot/kernel.test/kernel
245 .Pa /boot/kernel.test ,
248 Where to install the kernel and the modules (the default is
250 in the directory hierarchy specified by the environment variable
253 The name of the installed kernel file (the default is
255 under the directory specified by
257 This overrides the effect of
259 .It Ev DESTMODULESNAME
260 The name of the directory to install the kernel modules (the default is
262 under the directory specified by
264 This overrides the effect of
267 Directory for manual backup of binaries of installed world (default:
268 .Pa /var/backups/world_backup ) .
270 Directory for automatic backup of binaries of installed world (default:
271 .Ev MAKEOBJDIRPREFIX Ns /world_binaries/ Ns Ev DESTDIR ) .
273 When defined, the automatic backup feature of
277 Overrides the default optimization flags for kernel and module compiles.
279 Allows you to add additional compiler flags for kernel and module compiles.
282 to specify any optimization overrides, as some modules may have to override
283 it to enforce a lower optimization level.
284 .It Ev CHECK_DEPRECATED_DIRS
285 Directories to search for objects being still linked to deprecated system
287 This space separated list will be used by
289 target in addition to default
291 .It Ev REMOVE_DEPRECATED
292 Remove system objects marked as deprecated.
298 There are two other mechanisms that users should be aware of. First,
302 will make a backup of the current kernel in
303 .Pa /boot/kernel.old .
304 Because people often do multiple installkernel operations, this backup
305 kernel can also get lost in the noise.
306 It is usually prudent to make a backup of the old kernel manually
307 every once in a while when you know that it is a good kernel. you can
308 do this after issuing the
310 by running the command:
311 .Bd -literal -offset indent
312 cpdup /boot/kernel.old /boot/kernel.bak
315 The advantage of this is that no installation mechanism will overwrite
317 .Pa /boot/kernel.bak ,
318 and in addition to that the loader's boot menu will check for its
319 existence and present a menu option 'b' to allow you to boot from it.
321 The second mechanism is related to the two-stage root mount.
322 When using an encrypted root, the system will actually boot from a
323 small initial ramdisk (a.k.a. initrd) image stored as
324 .Pa /boot/kernel/initrd.img.gz .
325 This image will handle the encrypted configuration, mount, and chroot
327 This image is also used as the rescue ramdisk boot menu option.
328 This image is NOT updated automatically by
332 Instead, updating this image has to be done by running the manual command:
333 .Bd -literal -offset indent
337 It is usually a good idea to run this command after rebooting into the new
338 world that you installed (so you know the world you installed is good).
339 This command will update the initrd image in
341 and the rescue tools in
344 .Bl -tag -width ".Pa /usr/src/Makefile_upgrade.inc" -compact
345 .It Pa /etc/make.conf
346 .It Pa /etc/defaults/make.conf
347 .It Pa /usr/src/Makefile
348 .It Pa /usr/src/Makefile.inc1
349 .It Pa /usr/src/Makefile_upgrade.inc
354 method of updating your system from the latest sources is:
355 .Bd -literal -offset indent
357 make buildkernel KERNCONF=FOO
358 make installkernel KERNCONF=FOO
365 The above mentioned build and install order enforces that the new kernel
366 is installed before the new world.
367 Sometimes it might be necessary to reboot the system between those two
370 .Dq Nm make Cm installworld
371 will tell you to do so.
386 .An Mike W. Meyer Aq Mt mwm@mired.org
388 .An Sascha Wildner Aq Mt swildner@gmail.com .