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1 .\" Copyright (c) 2000
2 .\" Mike W. Meyer
3 .\"
4 .\" Redistribution and use in source and binary forms, with or without
5 .\" modification, are permitted provided that the following conditions
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25 .\" $FreeBSD: src/share/man/man5/make.conf.5,v 1.12.2.30 2003/05/18 17:05:55 brueffer Exp $
26 .\"
27 .Dd June 20, 2015
28 .Dt MAKE.CONF 5
29 .Os
30 .Sh NAME
31 .Nm make.conf
32 .Nd system build information
33 .Sh DESCRIPTION
34 The file
35 .Nm
36 contains settings that control the compilation of the
37 .Dx
38 sources.
39 The file
40 .Nm
41 is generally created by the system administrator when the values need
42 to be changed from their defaults.
43 .Pp
44 The purpose of
45 .Nm
46 is not to run commands or perform compilation actions
47 directly.
48 Instead, it is included by the various makefiles in
49 .Pa /usr/src
50 which conditionalize their internal actions according to the settings
51 found there.
52 .Pp
53 The
54 .Pa /etc/make.conf
55 file is included from the appropriate
56 .Pa Makefile
57 which specifies the default settings for all the available options.
58 Options need only be specified in
59 .Pa /etc/make.conf
60 when the system administrator wishes to override these defaults.
61 .Pp
62 The build procedures occur in three areas: world, kernel, and
63 documentation.
64 Variables set in
65 .Nm
66 may be applicable during builds in one, two, or all of these areas.
67 They may be specified for a particular build via the
68 .Fl D
69 option of
70 .Xr make 1 .
71 .Pp
72 The following lists provide a name and short description for each
73 variable you can use during the indicated builds.
74 The values of variables flagged as
75 .Vt bool
76 are ignored; the variable being set at all (even to
77 .Dq Li FALSE
78 or
79 .Dq Li NO )
80 causes it to be treated as if it were set.
81 .Pp
82 The following list provides a name and short description for variables
83 that are used for all builds, or are used by the
84 .Pa makefiles
85 for things other than builds.
86 .Bl -tag -width Ar
87 .It Va CPUTYPE
88 .Pq Vt str
89 Controls which processor should be targeted for generated code.
90 This controls processor-specific optimizations in certain code
91 (currently only OpenSSL) as well as modifying the value of
92 .Va CFLAGS
93 and
94 .Va COPTFLAGS
95 to contain the appropriate optimization directive to
96 .Xr gcc 1 .
97 The automatic setting of
98 .Va CFLAGS
99 and
100 .Va COPTFLAGS
101 may be overridden using the
102 .Va NO_CPU_CFLAGS
103 and
104 .Va NO_CPU_COPTFLAGS
105 variables, respectively. Refer to
106 .Pa /usr/share/examples/etc/defaults/make.conf
107 for a list of recognized
108 .Va CPUTYPE
109 options.
110 .It Va CCVER
111 .Pq Vt str
112 Controls which GCC version to use by default.
113 It should be set as
114 .Li CCVER?=
115 so as not to interfere with overrides from userland.
116 We currently recommend that an override NOT be set in
117 .Pa /etc/make.conf .
118 Currently accepted values for compilers which are part of
119 .Dx
120 are
121 .Dq gcc47
122 and
123 .Dq gcc50
124 (default).
125 All other values will handled according to the settings in
126 .Xr compilers.conf 5 .
127 .It Va WORLD_CCVER
128 .Pq Vt str
129 Controls which version of GCC builds the base system, including
130 the kernel.
131 .Dq gcc47
132 is the default value.
133 .It Va LDVER
134 .Pq Vt str
135 Controls which linker to use by default. Currently accepted
136 values are
137 .Dq ld.gold
138 (GNU Gold linker) and
139 .Dq ld.bfd
140 (default).
141 .It Va WORLD_LDVER
142 .Pq Vt str
143 Controls which linker builds the base system, including
144 the kernel.
145 .Dq ld.bfd
146 is the default value.
147 .It Va BINUTILSVER
148 .Pq Vt str
149 Controls which binutils to use by default.
150 Currently accepted values are
151 .Dq binutils224
152 and
153 .Dq binutils225
154 (default).
155 .It Va WORLD_BINUTILSVER
156 .Pq Vt str
157 Controls which version of binutils builds the base system, including
158 the kernel.
159 .Dq binutils225
160 is the default value.
161 .It Va CFLAGS
162 .Pq Vt str
163 Controls the compiler setting when compiling C code.
164 Optimization levels above
165 .Fl O
166 .Pq Fl O2 , No ...
167 are not supported.
168 .Va BDECFLAGS
169 is provided as a set of
170 .Xr gcc 1
171 settings suggested by
172 .An Bruce Evans Aq Mt bde@FreeBSD.org
173 for developing and testing changes.
174 They can be used, if set, by:
175 .Bd -literal -offset indent
176 CFLAGS+=${BDECFLAGS}
177 .Ed
178 .It Va DEBUG_FLAGS
179 .Pq Vt str
180 Similar to
181 .Va CFLAGS
182 but it will cause
183 .Va STRIP
184 to be set to a blank value, if set.
185 Typically,
186 .Va DEBUG_FLAGS
187 is set to
188 .Fl g
189 for compiling with debug symbols.
190 .It Va NO_CPU_CFLAGS
191 .Pq Vt str
192 Setting this variable will prevent CPU specific compiler flags
193 from being automatically added to
194 .Va CFLAGS
195 during compile time.
196 .It Va CXXFLAGS
197 .Pq Vt str
198 Controls the compiler settings when compiling C++ code.
199 .Va CXXFLAGS
200 is initially set to the value of
201 .Va CFLAGS .
202 If you want to add to the
203 .Va CXXFLAGS
204 value, use
205 .Dq Li +=
206 instead of
207 .Dq Li = .
208 .It Va INSTALL
209 .Pq Vt str
210 the default install command.
211 To have components compared before doing the install, use
212 .Bd -literal -offset indent
213 INSTALL="install -C"
214 .Ed
215 .It Va NO_BACKUP
216 .Pq Vt str
217 Inhibit automatic backup of world binaries as port of
218 .Dq installworld
219 .Xr make 1
220 target.
221 Default is unset.
222 .It Va WORLD_BACKUP
223 .Pq Vt str
224 defines where system binaries will be backed up for the
225 .Dq backupworld
226 .Xr make 1
227 target.
228 The default is
229 .Dq /var/backups/world_backup .
230 .It Va AUTO_BACKUP
231 .Pq Vt str
232 defines where system binaries will be backed up automatically
233 as part of the
234 .Dq installworld
235 .Xr make 1
236 target.
237 The default is
238 .Dq Ev MAKEOBJDIRPREFIX Ns /world_binaries/ Ns Ev DESTDIR .
239 .It Va LOCAL_DIRS
240 .Pq Vt str
241 List of directories that should be entered when running
242 .Xr make 1
243 in
244 .Pa /usr/src .
245 .It Va MAKE_SHELL
246 .Pq Vt str
247 Controls the shell used internally by
248 .Xr make 1
249 to process the command scripts in makefiles.
250 .Xr sh 1 ,
251 .Xr ksh 1 ,
252 and
253 .Xr csh 1
254 all currently supported.
255 .Bd -literal -offset indent
256 MAKE_SHELL?=sh
257 .Ed
258 .It Va MODULES_OVERRIDE
259 .Pq Vt str
260 Set to a list of modules to build instead of all of them.
261 .It Va MTREE_FOLLOWS_SYMLINKS
262 .Pq Vt str
263 Set this to
264 .Dq Fl L
265 to cause
266 .Xr mtree 8
267 to follow symlinks.
268 .It Va STRIP
269 .Pq Vt str
270 Set this to the flag to pass to the
271 .Xr strip 1
272 command.
273 If set to a blank value, debug symbols will not be removed.
274 .Va STRIP
275 is automatically set to a blank value if
276 .Va DEBUG_FLAGS
277 is set.
278 .It Va WANT_HESIOD
279 .Pq Vt bool
280 Set this to build
281 .Xr hesiod 3
282 support into libc.
283 .It Va NO_NS_CACHING
284 .Pq Vt bool
285 Set this to disable name caching in the nsswitch subsystem.
286 The generic caching daemon,
287 .Xr nscd 8 ,
288 will not be built either if this option is set.
289 .It Va NO_WERROR
290 Set this if you don't want
291 .Fl Werror
292 to be added to
293 .Va CWARNFLAGS
294 or used in the kernel build.
295 .It Va STATIC_LOCALES
296 .Pq Vt str
297 Set to a list of locales to build into statically-linked binaries.
298 Currently supported locales are: BIG5 EUC EUCTW ISO2022 MSKanji UTF8
299 .El
300 .Pp
301 The following list provides a name and short description for variables
302 that are only used doing a kernel build:
303 .Bl -tag -width Ar
304 .It Va BOOT_COMCONSOLE_PORT
305 .Pq Vt str
306 The port address to use for the console if the boot blocks have
307 been configured to use a serial console instead of the keyboard/video card.
308 .It Va BOOT_COMCONSOLE_SPEED
309 .Pq Vt int
310 The baud rate to use for the console if the boot blocks have
311 been configured to use a serial console instead of the keyboard/video card.
312 .It Va COPTFLAGS
313 .Pq Vt str
314 Controls the compiler settings when building the
315 kernel.
316 Optimization levels above
317 .Fl O
318 .Pq Fl O2 , No ...
319 are not guaranteed to work.
320 .It Va KERNCONF
321 .Pq Vt str
322 Controls which kernel configurations will be
323 built by
324 .Dq Li "${MAKE} buildkernel"
325 and installed by
326 .Dq Li "${MAKE} installkernel" .
327 For example,
328 .Bd -literal -offset indent
329 KERNCONF=MINE DEBUG X86_64_GENERIC OTHERMACHINE
330 .Ed
331 .Pp
332 will build the kernels specified by the config files
333 .Pa MINE , DEBUG , X86_64_GENERIC ,
334 and
335 .Pa OTHERMACHINE ,
336 and install the kernel specified by the config file
337 .Pa MINE .
338 It defaults to
339 .Pa X86_64_GENERIC .
340 .It Va NO_CPU_COPTFLAGS
341 .Pq Vt str
342 Setting this variable will prevent CPU specific compiler flags
343 from being automatically added to
344 .Va COPTFLAGS
345 during compile time.
346 .It Va NO_KERNELCLEAN
347 .Pq Vt bool
348 Set this to skip the clean target when using
349 .Dq Li "${MAKE} buildkernel" .
350 .It Va NO_KERNELCONFIG
351 .Pq Vt bool
352 Set this to skip running
353 .Xr config 8
354 during
355 .Dq Li "${MAKE} buildkernel" .
356 .It Va NO_KERNELDEPEND
357 .Pq Vt bool
358 Set this to skip running
359 .Dq Li "${MAKE} depend"
360 during
361 .Dq Li "${MAKE} buildkernel" .
362 .It Va NO_KERNEL_OLD_STRIP
363 .Pq Vt bool
364 Set this to skip stripping debugging symbols from old kernel and modules
365 (kernel.old, modules.old) during
366 .Dq Li "${MAKE} installkernel" .
367 .It Va NO_MODULES
368 .Pq Vt bool
369 Set to not build modules with the kernel.
370 .El
371 .Pp
372 The following list provides a name and short description for variables
373 that are used during the world build:
374 .Bl -tag -width Ar
375 .It Va ENABLE_SUID_SSH
376 .Pq Vt bool
377 Set this to install
378 .Xr ssh 1
379 with the setuid bit turned on.
380 .It Va MODULES_WITH_WORLD
381 .Pq Vt bool
382 Set to build modules with the system instead of the kernel.
383 .It Va NO_ALTBINUTILS
384 .Pq Vt bool
385 Set to not build the alternative (non-default) set of binutils.
386 .It Va NO_ALTCOMPILER
387 .Pq Vt bool
388 Set to not build the designated secondary compiler (GCC 4.7).
389 .It Va NO_CRYPT
390 .Pq Vt bool
391 Set to not build crypto code.
392 .It Va NO_CVS
393 .Pq Vt bool
394 Set to not build CVS.
395 .It Va NO_GAMES
396 .Pq Vt bool
397 Set to not build games.
398 .It Va NO_GDB
399 .Pq Vt bool
400 Set to not build
401 .Xr gdb 1
402 .It Va NO_LIBC_R
403 .Pq Vt bool
404 Set to not build
405 .Nm libc_r
406 (reentrant version of
407 .Nm libc ) .
408 .It Va NO_LPR
409 .Pq Vt bool
410 Set to not build
411 .Xr lpr 1
412 and related programs.
413 .It Va NO_OPENSSH
414 .Pq Vt bool
415 Set to not build OpenSSH.
416 .It Va NO_OPENSSL
417 .Pq Vt bool
418 Set to not build OpenSSL (implies
419 .Va NO_OPENSSH ) .
420 .It Va NO_SHARE
421 .Pq Vt bool
422 Set to not enter the share subdirectory.
423 .It Va NOCLEAN
424 .Pq Vt bool
425 Set this to disable cleaning during
426 .Dq Li "make buildworld" .
427 This should not be set unless you know what you are doing.
428 .It Va NOCLEANDIR
429 .Pq Vt bool
430 Set this to run
431 .Dq Li "${MAKE} clean"
432 instead of
433 .Dq Li "${MAKE} cleandir" .
434 .It Va NOFSCHG
435 .Pq Vt bool
436 Set to not install certain components with flag schg.
437 This is useful in a jailed environment.
438 .It Va NOMAN
439 .Pq Vt bool
440 Set to not build manual pages
441 .It Va NOMANCOMPRESS
442 .Pq Vt bool
443 Set to not compress the manual pages.
444 .It Va NOPROFILE
445 .Pq Vt bool
446 Set to avoid compiling profiled libraries.
447 .It Va PPP_NOSUID
448 .Pq Vt bool
449 Set to disable the installation of
450 .Xr ppp 8
451 with the set-user-ID bit on.
452 .It Va XAUTH_PATH
453 .Pq Vt str
454 The path to the xauth program used by OpenSSH client.
455 .It Va SENDMAIL_MC
456 .Pq Vt str
457 The default
458 .Xr m4 1
459 configuration file to use at install time.
460 The value should include the full path to the
461 .Pa .mc
462 file, e.g.,
463 .Pa /etc/mail/myconfig.mc .
464 Use with caution as a make install will overwrite any existing
465 .Pa /etc/mail/sendmail.cf .
466 .It Va SENDMAIL_SUBMIT_MC
467 .Pq Vt str
468 The default
469 .Xr m4 1
470 configuration file for mail submission
471 to use at install time.
472 The value should include the full path to the
473 .Pa .mc
474 file, e.g.,
475 .Pa /etc/mail/mysubmit.mc .
476 Use with caution as a make install will overwrite any existing
477 .Pa /etc/mail/submit.cf .
478 .It Va SENDMAIL_CF_DIR
479 .Pq Vt str
480 Override the default location for the
481 .Xr m4 1
482 configuration files used to build a
483 .Pa .cf
484 file from a
485 .Pa .mc
486 file.
487 The default is
488 .Pa /usr/local/share/sendmail/cf .
489 .It Va SENDMAIL_M4_FLAGS
490 .Pq Vt str
491 Flags passed to
492 .Xr m4 1
493 when building a
494 .Pa .cf
495 file from a
496 .Pa .mc
497 file.
498 .It Va SENDMAIL_MAP_PERMS
499 .Pq Vt str
500 Mode to use when generating alias and map database files using
501 .Pa /etc/mail/Makefile .
502 The default value is 0640.
503 .It Va THREAD_LIB
504 .Pq Vt str
505 Set to either
506 .Li c_r
507 or
508 .Li thread_xu
509 to configure the system's default threading library.
510 The default is
511 .Li thread_xu .
512 .It Va WANT_IDEA
513 .Pq Vt bool
514 Set to build the IDEA encryption code.
515 This code is patented in the USA and many European countries.
516 It is
517 .Em "YOUR RESPONSIBILITY"
518 to determine if you can legally use IDEA.
519 .It Va WANT_INSTALLER
520 .Pq Vt bool
521 Set to build the installer.
522 .It Va WANT_NETGRAPH7
523 .Pq Vt bool
524 Set to build a newer, experimental
525 .Xr netgraph 4
526 userland.
527 It has to be accompanied by
528 .Dv NETGRAPH7*
529 options in the kernel.
530 .El
531 .Pp
532 The following list provides a name and short description for variables
533 that are used when building documentation.
534 .Bl -tag -width Ar
535 .It Va PRINTERDEVICE
536 .Pq Vt str
537 The default format for system documentation, depends on your
538 printer.
539 This can be set to
540 .Dq Li ascii
541 for simple printers or
542 .Dq Li ps
543 for postscript or graphics printers with a ghostscript
544 filter.
545 .It Va GROFF_PAPER_SIZE
546 .Pq Vt str
547 The default paper size for
548 .Xr groff 1
549 (either
550 .Dq letter
551 or
552 .Dq A4 ) .
553 .El
554 .Sh FILES
555 .Bl -tag -width /etc/defaults/make.conf -compact
556 .It Pa /etc/defaults/make.conf
557 .It Pa /etc/make.conf
558 .It Pa /usr/src/Makefile
559 .It Pa /usr/src/Makefile.inc1
560 .El
561 .Sh SEE ALSO
562 .Xr gcc 1 ,
563 .Xr install 1 ,
564 .Xr make 1 ,
565 .Xr lpd 8
566 .Sh HISTORY
567 The
568 .Nm
569 file appeared sometime before
570 .Fx 4.0 .
571 .Sh AUTHORS
572 This manual page was written by
573 .An Mike W. Meyer Aq Mt mwm@mired.org .