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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.
225 for all kernels including
227 for each architecture supported by the build system.
228 This command takes a long time.
230 Get updated sources as configured in
234 Kernel specific build targets in
237 .Bl -tag -width ".Cm reinstallkernel"
239 Rebuild the kernel and the kernel modules.
241 Install the kernel and the kernel modules to directory
242 .Pa ${DESTDIR}/boot/kernel ,
243 renaming any pre-existing directory with this name to
245 if it contained the currently running kernel.
246 The target directory under
248 may be modified using the
259 .It Cm kernel-toolchain
260 Rebuild the tools needed for kernel compilation.
261 Use this if you did not do a
264 .It Cm reinstallkernel
265 Reinstall the kernel and the kernel modules, overwriting the contents
266 of the target directory.
269 target, the target directory can be specified using the
275 Convenience targets for cleaning up the install destination directory
279 .Bl -tag -width ".Cm delete-old-libs"
281 Print a list of old files and directories in the system.
283 Delete obsolete base system files and directories interactively.
285 .Li -DBATCH_DELETE_OLD_FILES
286 is specified at the command line, the delete operation will be
293 should be set as with
294 .Dq Li "make installworld" .
295 .It Cm delete-old-libs
296 Delete obsolete base system libraries interactively.
297 This target should only be used if no 3rd party software uses these
300 .Li -DBATCH_DELETE_OLD_FILES
301 is specified at the command line, the delete operation will be
308 should be set as with
309 .Dq Li "make installworld" .
312 Variables that influence all builds include:
313 .Bl -tag -width ".Va MAKEOBJDIRPREFIX"
315 The directory hierarchy prefix where built objects will be installed.
318 defaults to the empty string.
319 .It Va MAKEOBJDIRPREFIX
320 Defines the prefix for directory names in the tree of built objects.
324 This variable should only be set in the environment and not via
328 If defined, compiler warnings will not cause the build to halt,
329 even if the makefile says otherwise.
332 Additionally, builds in
334 are influenced by the following
337 .Bl -tag -width ".Va SUBDIR_OVERRIDE"
339 If set, this variable supplies a list of additional directories to
340 build, relative to the root of the source tree.
341 .It Va SUBDIR_OVERRIDE
342 Override the default list of sub-directories and only build the
343 sub-directory named in this variable.
344 This variable is useful when debugging failed builds.
345 .Bd -literal -offset indent
346 make some-target SUBDIR_OVERRIDE=foo/bar
349 The target hardware platform.
350 This is analogous to the
353 This is necessary to cross-build some target architectures.
354 For example, cross-building for PC98 machines requires
355 .Va TARGET_ARCH Ns = Ns Li i386
357 .Va TARGET Ns = Ns Li pc98 .
360 defaults to the current hardware platform.
362 The target machine processor architecture.
363 This is analogous to the
366 Set this to cross-build for a different architecture.
369 defaults to the current machine architecture.
372 Builds under directory
374 are influenced by the following
377 .Bl -tag -width ".Va DOC_LANG"
379 If set, restricts the documentation build to the language subdirectories
380 specified as its content.
381 The default action is to build documentation for all languages.
384 .Bl -tag -width ".Pa /usr/share/examples/etc/make.conf" -compact
385 .It Pa /usr/doc/Makefile
386 .It Pa /usr/doc/share/mk/doc.project.mk
387 .It Pa /usr/ports/Mk/bsd.port.mk
388 .It Pa /usr/ports/Mk/bsd.sites.mk
389 .It Pa /usr/share/examples/etc/make.conf
390 .It Pa /usr/src/Makefile
391 .It Pa /usr/src/Makefile.inc1
396 method of updating your system from the latest sources, please see the
401 The following sequence of commands can be used to cross-build the
402 system for the sparc64 architecture on an i386 host:
403 .Bd -literal -offset indent
405 make TARGET_ARCH=sparc64 buildworld
406 make TARGET_ARCH=sparc64 DESTDIR=/clients/sparc64 installworld
421 .An Mike W. Meyer Aq mwm@mired.org .