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27 .Dd September 29, 2011
32 .Nd information on how to build the system
36 system and its applications are contained in three different directories,
46 sources, which is loosely defined as the things required to rebuild
47 the system to a useful state.
50 contains the source for the system documentation, excluding the manual
54 contains a tree that provides a consistent interface for building and
55 installing third party applications.
56 For more information about the ports build process, see
61 command is used in each of these directories to build and install the
62 things in that directory.
65 command in any directory or
66 subdirectory of those directories has the same effect as issuing the
67 same command in all subdirectories of that directory.
68 With no target specified, the things in that directory are just built.
70 A source tree is allowed to be read-only.
73 objects are usually built in a separate object directory hierarchy
74 specified by the environment variable
75 .Va MAKEOBJDIRPREFIX ,
81 For a given source directory, its canonical object directory
83 .Pa ${MAKEOBJDIRPREFIX}${.CURDIR}
89 .Pa /usr/obj${.CURDIR}
90 if this variable is not set.
91 Cross-builds set the object directory as described in the
96 The build may be controlled by defining
98 variables described in the
100 section below, and by the variables documented in
103 The following list provides the names and actions for the targets
104 supported by the build system:
105 .Bl -tag -width ".Cm cleandepend"
107 Remove any files created during the build process.
110 .Pa ${.OBJDIR}/${DEPENDFILE}
115 Remove the canonical object directory if it exists, or perform
116 actions equivalent to
117 .Dq Li "make clean cleandepend"
119 This target will also remove an
125 It is advisable to run
126 .Dq Li "make cleandir"
127 twice: the first invocation will remove the canonical object directory
128 and the second one will clean up
131 Generate a list of build dependencies in file
132 .Pa ${.OBJDIR}/${DEPENDFILE} .
134 Install the results of the build to the appropriate location in the
135 installation directory hierarchy specified in variable
138 Create the canonical object directory associated with the current
141 Create a symbolic link to the canonical object directory in
144 Generate a tags file using the program specified in the
148 The build system supports
154 The other supported targets under directory
157 .Bl -tag -width ".Cm distributeworld"
159 Spawn an interactive shell with environment variables set up for
160 cross-building the system.
161 The target architecture needs to be specified with
168 This target is only useful after a complete cross-toolchain including
169 the compiler, linker, assembler, headers and libraries has been
174 Build everything but the kernel, configure files in
178 The actual build location prefix used is
179 .Pa ${MAKEOBJDIRPREFIX}${.CURDIR}
180 for native builds, and
181 .Pa ${MAKEOBJDIRPREFIX}/${TARGET}${.CURDIR}
182 for cross builds and native builds with variable
183 .Va CROSS_BUILD_TESTING
186 Attempt to clean up targets built by a preceding
189 .It Cm distributeworld
190 Distribute everything compiled by a preceding
193 Files are placed in the directory hierarchy specified by
197 This target is used while building a release; see
200 Install everything built by a preceding
202 step into the directory hierarchy pointed to by
207 If installing onto an NFS file system and running
211 option, make sure that
213 is running on both client and server.
216 on how to make it start at boot time.
218 Create the build toolchain needed to build the rest of the system.
219 For cross-architecture builds, this step creates a cross-toolchain.
221 For each architecture,
226 for all kernels for that architecture,
229 This command takes a long time.
231 Get updated sources as configured in
234 Execute the same targets as
236 In addition print a summary of all failed targets at the end and
237 exit with an error if there were any.
239 Create a build toolchain for each architecture supported by the build system.
242 Kernel specific build targets in
245 .Bl -tag -width ".Cm reinstallkernel"
247 Rebuild the kernel and the kernel modules.
249 Install the kernel and the kernel modules to directory
250 .Pa ${DESTDIR}/boot/kernel ,
251 renaming any pre-existing directory with this name to
253 if it contained the currently running kernel.
254 The target directory under
256 may be modified using the
267 .It Cm kernel-toolchain
268 Rebuild the tools needed for kernel compilation.
269 Use this if you did not do a
272 .It Cm reinstallkernel
273 Reinstall the kernel and the kernel modules, overwriting the contents
274 of the target directory.
277 target, the target directory can be specified using the
283 Convenience targets for cleaning up the install destination directory
287 .Bl -tag -width ".Cm delete-old-libs"
289 Print a list of old files and directories in the system.
291 Delete obsolete base system files and directories interactively.
293 .Li -DBATCH_DELETE_OLD_FILES
294 is specified at the command line, the delete operation will be
301 should be set as with
302 .Dq Li "make installworld" .
303 .It Cm delete-old-libs
304 Delete obsolete base system libraries interactively.
305 This target should only be used if no 3rd party software uses these
308 .Li -DBATCH_DELETE_OLD_FILES
309 is specified at the command line, the delete operation will be
316 should be set as with
317 .Dq Li "make installworld" .
320 Variables that influence all builds include:
321 .Bl -tag -width ".Va MAKEOBJDIRPREFIX"
323 Defines a set of debugging flags that will be used to build all userland
332 targets install binaries from the current
335 so that debugging information is retained in the installed binaries.
337 The directory hierarchy prefix where built objects will be installed.
340 defaults to the empty string.
341 .It Va MAKEOBJDIRPREFIX
342 Defines the prefix for directory names in the tree of built objects.
346 This variable should only be set in the environment and not via
350 If defined, compiler warnings will not cause the build to halt,
351 even if the makefile says otherwise.
354 Additionally, builds in
356 are influenced by the following
359 .Bl -tag -width ".Va SUBDIR_OVERRIDE"
361 Overrides which kernel to build and install for the various kernel
366 If set, the build target
370 .Va NO_KERNELCONFIG ,
374 When set to a value other than
378 is set to the value of
381 If set, this variable supplies a list of additional directories to
382 build, relative to the root of the source tree.
384 A list of ports with kernel modules that should be built and installed
390 .Bd -literal -offset indent
391 make PORTS_MODULES=emulators/kqemu-kmod kernel
393 .It Va SUBDIR_OVERRIDE
394 Override the default list of sub-directories and only build the
395 sub-directory named in this variable.
396 This variable is useful when debugging failed builds.
397 .Bd -literal -offset indent
398 make some-target SUBDIR_OVERRIDE=foo/bar
401 The target hardware platform.
402 This is analogous to the
405 This is necessary to cross-build some target architectures.
406 For example, cross-building for PC98 machines requires
407 .Va TARGET_ARCH Ns = Ns Li i386
409 .Va TARGET Ns = Ns Li pc98 .
412 defaults to the current hardware platform.
414 The target machine processor architecture.
415 This is analogous to the
418 Set this to cross-build for a different architecture.
421 defaults to the current machine architecture, unless
423 is also set, in which case it defaults to the appropriate
424 value for that platform.
425 Typically, one only needs to set
429 Builds under directory
431 are also influenced by defining one or more of the following symbols,
436 .Bl -tag -width ".Va -DNO_KERNELDEPEND"
438 If set, the build targets that clean parts of the object tree use the
444 If set, no object tree files are cleaned at all.
451 is set no kernel objects are cleaned either.
453 If set, the build process does not run the DTrace CTF conversion tools
456 If set, the build does not descend into the
458 subdirectory (i.e. manpages, locale data files, timezone data files and
461 files will not be rebuild from their sources).
462 .It Va NO_KERNELCLEAN
463 If set, the build process does not run
468 .It Va NO_KERNELCONFIG
469 If set, the build process does not run
474 .It Va NO_KERNELDEPEND
475 If set, the build process does not run
481 If set, the build process does not run
487 If set, the update process does not update the source of the
489 documentation as part of the
492 .It Va NO_PORTSUPDATE
493 If set, the update process does not update the Ports tree as part of the
498 Builds under directory
500 are influenced by the following
503 .Bl -tag -width ".Va DOC_LANG"
505 If set, restricts the documentation build to the language subdirectories
506 specified as its content.
507 The default action is to build documentation for all languages.
512 target are influenced by the following
515 .Bl -tag -width ".Va MAKE_JUST_KERNELS"
517 Pass the value of this variable to each
519 invocation used to build worlds and kernels.
520 This can be used to enable multiple jobs within a single architecture's build
521 while still building each architecture serially.
522 .It Va MAKE_JUST_KERNELS
523 Only build kernels for each supported architecture.
524 .It Va MAKE_JUST_WORLDS
525 Only build worlds for each supported architecture.
526 .It Va UNIVERSE_TARGET
527 Execute the specified
529 target for each supported architecture instead of the default action of
530 building a world and one or more kernels.
533 .Bl -tag -width ".Pa /usr/share/examples/etc/make.conf" -compact
534 .It Pa /usr/doc/Makefile
535 .It Pa /usr/doc/share/mk/doc.project.mk
536 .It Pa /usr/ports/Mk/bsd.port.mk
537 .It Pa /usr/ports/Mk/bsd.sites.mk
538 .It Pa /usr/share/examples/etc/make.conf
539 .It Pa /usr/src/Makefile
540 .It Pa /usr/src/Makefile.inc1
545 method of updating your system from the latest sources, please see the
550 The following sequence of commands can be used to cross-build the
551 system for the sparc64 architecture on an i386 host:
552 .Bd -literal -offset indent
554 make TARGET=sparc64 buildworld
555 make TARGET=sparc64 DESTDIR=/clients/sparc64 installworld
570 .An Mike W. Meyer Aq mwm@mired.org .