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32 .Nd information on how to build the system
36 system and its applications are contained in three different directories,
42 These directories may be initially empty or non-existent until updated with
50 sources, which is loosely defined as the things required to rebuild
51 the system to a useful state.
54 contains the source for the system documentation, excluding the manual
58 contains a tree that provides a consistent interface for building and
59 installing third party applications.
60 For more information about the ports build process, see
65 command is used in each of these directories to build and install the
66 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.
74 A source tree is allowed to be read-only.
77 objects are usually built in a separate object directory hierarchy
78 specified by the environment variable
79 .Va MAKEOBJDIRPREFIX ,
85 For a given source directory, its canonical object directory
87 .Pa ${MAKEOBJDIRPREFIX}${.CURDIR}
93 .Pa /usr/obj${.CURDIR}
94 if this variable is not set.
95 Cross-builds set the object directory as described in the
100 The build may be controlled by defining
102 variables described in the
104 section below, and by the variables documented in
107 The following list provides the names and actions for the targets
108 supported by the build system:
109 .Bl -tag -width ".Cm cleandepend"
111 Remove any files created during the build process.
114 .Pa ${.OBJDIR}/${DEPENDFILE}
119 Remove the canonical object directory if it exists, or perform
120 actions equivalent to
121 .Dq Li "make clean cleandepend"
123 This target will also remove an
129 It is advisable to run
130 .Dq Li "make cleandir"
131 twice: the first invocation will remove the canonical object directory
132 and the second one will clean up
135 Generate a list of build dependencies in file
136 .Pa ${.OBJDIR}/${DEPENDFILE} .
138 Install the results of the build to the appropriate location in the
139 installation directory hierarchy specified in variable
142 Create the canonical object directory associated with the current
145 Create a symbolic link to the canonical object directory in
148 Generate a tags file using the program specified in the
152 The build system supports
158 The other supported targets under directory
161 .Bl -tag -width ".Cm distributeworld"
163 Spawn an interactive shell with environment variables set up for
164 cross-building the system.
165 The target architecture needs to be specified with
172 This target is only useful after a complete cross-toolchain including
173 the compiler, linker, assembler, headers and libraries has been
178 Build everything but the kernel, configure files in
182 The object directory can be changed from the default
188 The actual build location prefix used is
189 .Pa ${MAKEOBJDIRPREFIX}${.CURDIR}
190 for native builds, and
191 .Pa ${MAKEOBJDIRPREFIX}/${TARGET}${.CURDIR}
192 for cross builds and native builds with variable
193 .Va CROSS_BUILD_TESTING
196 Attempt to clean up targets built by a preceding
199 .It Cm distributeworld
200 Distribute everything compiled by a preceding
203 Files are placed in the directory hierarchy specified by
207 This target is used while building a release; see
210 Archive the results of
211 .Cm distributeworld ,
212 placing the results in
214 This target is used while building a release; see
217 Install everything built by a preceding
219 step into the directory hierarchy pointed to by
224 If installing onto an NFS file system and running
228 option, make sure that
230 is running on both client and server.
233 on how to make it start at boot time.
235 Create the build toolchain needed to build the rest of the system.
236 For cross-architecture builds, this step creates a cross-toolchain.
238 For each architecture,
243 for all kernels for that architecture,
246 This command takes a long time.
248 Get updated sources as configured in
251 Print a list of supported
255 pairs for world and kernel targets.
257 Execute the same targets as
259 In addition print a summary of all failed targets at the end and
260 exit with an error if there were any.
262 Create a build toolchain for each architecture supported by the build system.
265 Kernel specific build targets in
268 .Bl -tag -width ".Cm distributekernel"
270 Rebuild the kernel and the kernel modules.
271 The object directory can be changed from the default
278 Install the kernel and the kernel modules to directory
279 .Pa ${DESTDIR}/boot/kernel ,
280 renaming any pre-existing directory with this name to
282 if it contained the currently running kernel.
283 The target directory under
285 may be modified using the
291 .It Cm distributekernel
292 Install the kernel to the directory
293 .Pa ${DISTDIR}/kernel/boot/kernel .
294 This target is used while building a release; see
297 Archive the results of
298 .Cm distributekernel ,
299 placing the results in
301 This target is used while building a release; see
308 .It Cm kernel-toolchain
309 Rebuild the tools needed for kernel compilation.
310 Use this if you did not do a
313 .It Cm reinstallkernel
314 Reinstall the kernel and the kernel modules, overwriting the contents
315 of the target directory.
318 target, the target directory can be specified using the
324 Convenience targets for cleaning up the install destination directory
328 .Bl -tag -width ".Cm delete-old-libs"
330 Print a list of old files and directories in the system.
332 Delete obsolete base system files and directories interactively.
334 .Li -DBATCH_DELETE_OLD_FILES
335 is specified at the command line, the delete operation will be
342 should be set as with
343 .Dq Li "make installworld" .
344 .It Cm delete-old-libs
345 Delete obsolete base system libraries interactively.
346 This target should only be used if no third party software uses these
349 .Li -DBATCH_DELETE_OLD_FILES
350 is specified at the command line, the delete operation will be
357 should be set as with
358 .Dq Li "make installworld" .
361 Variables that influence all builds include:
362 .Bl -tag -width ".Va MAKEOBJDIRPREFIX"
364 Defines a set of debugging flags that will be used to build all userland
373 targets install binaries from the current
376 so that debugging information is retained in the installed binaries.
378 The directory hierarchy prefix where built objects will be installed.
381 defaults to the empty string.
382 .It Va MAKEOBJDIRPREFIX
383 Defines the prefix for directory names in the tree of built objects.
387 This variable should only be set in the environment and not via
391 If defined, compiler warnings will not cause the build to halt,
392 even if the makefile says otherwise.
394 If defined, the build process will run the DTrace CTF conversion
395 tools on built objects.
398 Additionally, builds in
400 are influenced by the following
403 .Bl -tag -width ".Va SUBDIR_OVERRIDE"
405 Overrides which kernel to build and install for the various kernel
410 If set, the build target
414 .Va NO_KERNELCONFIG ,
418 When set to a value other than
422 is set to the value of
425 If set, this variable supplies a list of additional directories relative to
426 the root of the source tree to build as part of the
430 If set, this variable supplies a list of additional tools that are used by the
435 .It Va LOCAL_LIB_DIRS
436 If set, this variable supplies a list of additional directories relative to
437 the root of the source tree to build as part of the
441 If set, this variable supplies a list of additional mtrees relative to the
442 root of the source tree to use as part of the
445 .It Va LOCAL_TOOL_DIRS
446 If set, this variable supplies a list of additional directories relative to
447 the root of the source tree to build as part of the
451 A list of ports with kernel modules that should be built and installed
457 .Bd -literal -offset indent
458 make PORTS_MODULES=emulators/kqemu-kmod kernel
461 Command to use at install time when stripping binaries.
462 Be sure to add any additional tools required to run
467 variable before running the
475 .It Va SUBDIR_OVERRIDE
476 Override the default list of sub-directories and only build the
477 sub-directory named in this variable.
478 This variable is useful when debugging failed builds.
479 .Bd -literal -offset indent
480 make some-target SUBDIR_OVERRIDE=foo/bar
483 The target hardware platform.
484 This is analogous to the
487 This is necessary to cross-build some target architectures.
488 For example, cross-building for PC98 machines requires
489 .Va TARGET_ARCH Ns = Ns Li i386
491 .Va TARGET Ns = Ns Li pc98 .
494 defaults to the current hardware platform.
496 The target machine processor architecture.
497 This is analogous to the
500 Set this to cross-build for a different architecture.
503 defaults to the current machine architecture, unless
505 is also set, in which case it defaults to the appropriate
506 value for that platform.
507 Typically, one only needs to set
511 Builds under directory
513 are also influenced by defining one or more of the following symbols,
518 .Bl -tag -width ".Va -DNO_KERNELDEPEND"
520 If set, the build targets that clean parts of the object tree use the
526 If set, no object tree files are cleaned at all.
533 is set no kernel objects are cleaned either.
535 If set, the build process does not run the DTrace CTF conversion tools
538 If set, the build does not descend into the
540 subdirectory (i.e., manual pages, locale data files, timezone data files and
543 files will not be rebuild from their sources).
544 .It Va NO_KERNELCLEAN
545 If set, the build process does not run
550 .It Va NO_KERNELCONFIG
551 If set, the build process does not run
556 .It Va NO_KERNELDEPEND
557 If set, the build process does not run
563 If set, the build process does not run
569 If set, the update process does not update the source of the
571 documentation as part of the
574 .It Va NO_PORTSUPDATE
575 If set, the update process does not update the Ports tree as part of the
579 If set, the update process does not update the www tree as part of the
584 Builds under directory
586 are influenced by the following
589 .Bl -tag -width ".Va DOC_LANG"
591 If set, restricts the documentation build to the language subdirectories
592 specified as its content.
593 The default action is to build documentation for all languages.
598 target are influenced by the following
601 .Bl -tag -width ".Va MAKE_JUST_KERNELS"
603 Pass the value of this variable to each
605 invocation used to build worlds and kernels.
606 This can be used to enable multiple jobs within a single architecture's build
607 while still building each architecture serially.
608 .It Va MAKE_JUST_KERNELS
609 Only build kernels for each supported architecture.
610 .It Va MAKE_JUST_WORLDS
611 Only build worlds for each supported architecture.
612 .It Va UNIVERSE_TARGET
613 Execute the specified
615 target for each supported architecture instead of the default action of
616 building a world and one or more kernels.
619 .Bl -tag -width ".Pa /usr/share/examples/etc/make.conf" -compact
620 .It Pa /usr/doc/Makefile
621 .It Pa /usr/doc/share/mk/doc.project.mk
622 .It Pa /usr/ports/Mk/bsd.port.mk
623 .It Pa /usr/ports/Mk/bsd.sites.mk
624 .It Pa /usr/share/examples/etc/make.conf
625 .It Pa /usr/src/Makefile
626 .It Pa /usr/src/Makefile.inc1
631 method of updating your system from the latest sources, please see the
636 The following sequence of commands can be used to cross-build the
637 system for the sparc64 architecture on an i386 host:
638 .Bd -literal -offset indent
640 make TARGET=sparc64 buildworld
641 make TARGET=sparc64 DESTDIR=/clients/sparc64 installworld
658 .An Mike W. Meyer Aq mwm@mired.org .