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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 December 19, 2016
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 gcc50
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, default) and
139 .Dq ld.bfd
140 (classic GNU ld linker).
141 .It Va WORLD_LDVER
142 .Pq Vt str
143 Controls which linker builds the base system, including
144 the kernel.
145 .Dq ld.gold
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 binutils225
152 and
153 .Dq binutils227
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 binutils227
160 is the default value.
161 .It Va WORLD_CFLAGS
162 .Pq Vt str
163 Controls the compiler setting when compiling C code.
164 Optimization levels are controlled by
165 .Va WORLD_CCOPTLEVEL .
166 .Va BDECFLAGS
167 is provided as a set of
168 .Xr gcc 1
169 settings suggested by
170 .An Bruce Evans Aq Mt bde@FreeBSD.org
171 for developing and testing changes.
172 They can be used safely, if set, by:
173 .Bd -literal -offset indent
174 WORLD_CFLAGS+=${BDECFLAGS}
175 .Ed
176 .It Va WORLD_CCOPTLEVEL
177 (str) Allows to override default compiler optimization level
178 .Fl \&Ox .
179 Common levels are: 0, 1, 2, 3, g, s, fast.
180 Use of
181 .Fl O3
182 and
183 .Fl Ofast
184 is strongly discouraged.
185 .It Va DEBUG_FLAGS
186 .Pq Vt str
187 Similar to
188 .Va WOLRD_CFLAGS
189 but it will cause
190 .Va STRIP
191 to be set to a blank value, if set.
192 Typically,
193 .Va DEBUG_FLAGS
194 is set to
195 .Fl g
196 for compiling with debug symbols.
197 .It Va NO_CPU_CFLAGS
198 .Pq Vt str
199 Setting this variable will prevent CPU specific compiler flags
200 from being automatically added to
201 .Va CFLAGS
202 during compile time.
203 .It Va CXXFLAGS
204 .Pq Vt str
205 Controls the compiler settings when compiling C++ code.
206 .Va CXXFLAGS
207 is initially set to the value of
208 .Va CFLAGS .
209 If you want to add to the
210 .Va CXXFLAGS
211 value, use
212 .Dq Li +=
213 instead of
214 .Dq Li = .
215 .It Va INSTALL
216 .Pq Vt str
217 the default install command.
218 To have components compared before doing the install, use
219 .Bd -literal -offset indent
220 INSTALL="install -C"
221 .Ed
222 .It Va NO_BACKUP
223 .Pq Vt str
224 Inhibit automatic backup of world binaries as port of
225 .Dq installworld
226 .Xr make 1
227 target.
228 Default is unset.
229 .It Va WORLD_BACKUP
230 .Pq Vt str
231 defines where system binaries will be backed up for the
232 .Dq backupworld
233 .Xr make 1
234 target.
235 The default is
236 .Dq /var/backups/world_backup .
237 .It Va AUTO_BACKUP
238 .Pq Vt str
239 defines where system binaries will be backed up automatically
240 as part of the
241 .Dq installworld
242 .Xr make 1
243 target.
244 The default is
245 .Dq Ev MAKEOBJDIRPREFIX Ns /world_binaries/ Ns Ev DESTDIR .
246 .It Va LOCAL_DIRS
247 .Pq Vt str
248 List of directories that should be entered when running
249 .Xr make 1
250 in
251 .Pa /usr/src .
252 .It Va MAKE_SHELL
253 .Pq Vt str
254 Controls the shell used internally by
255 .Xr make 1
256 to process the command scripts in makefiles.
257 .Xr sh 1 ,
258 .Xr ksh 1 ,
259 and
260 .Xr csh 1
261 all currently supported.
262 .Bd -literal -offset indent
263 MAKE_SHELL?=sh
264 .Ed
265 .It Va MODULES_OVERRIDE
266 .Pq Vt str
267 Set to a list of modules to build instead of all of them.
268 .It Va MTREE_FOLLOWS_SYMLINKS
269 .Pq Vt str
270 Set this to
271 .Dq Fl L
272 to cause
273 .Xr mtree 8
274 to follow symlinks.
275 .It Va STRIP
276 .Pq Vt str
277 Set this to the flag to pass to the
278 .Xr strip 1
279 command.
280 If set to a blank value, debug symbols will not be removed.
281 .Va STRIP
282 is automatically set to a blank value if
283 .Va DEBUG_FLAGS
284 is set.
285 .It Va WANT_HESIOD
286 .Pq Vt bool
287 Set this to build
288 .Xr hesiod 3
289 support into libc.
290 .It Va NO_NS_CACHING
291 .Pq Vt bool
292 Set this to disable name caching in the nsswitch subsystem.
293 The generic caching daemon,
294 .Xr nscd 8 ,
295 will not be built either if this option is set.
296 .It Va NO_WERROR
297 Set this if you don't want
298 .Fl Werror
299 to be added to
300 .Va CWARNFLAGS
301 or used in the kernel build.
302 .It Va STATIC_LOCALES
303 .Pq Vt str
304 Set to a list of locales to build into statically-linked binaries.
305 Currently supported locales are: BIG5 EUC EUCTW ISO2022 MSKanji UTF8
306 .El
307 .Pp
308 The following list provides a name and short description for variables
309 that are only used doing a kernel build:
310 .Bl -tag -width Ar
311 .It Va BOOT_COMCONSOLE_PORT
312 .Pq Vt str
313 The port address to use for the console if the boot blocks have
314 been configured to use a serial console instead of the keyboard/video card.
315 .It Va BOOT_COMCONSOLE_SPEED
316 .Pq Vt int
317 The baud rate to use for the console if the boot blocks have
318 been configured to use a serial console instead of the keyboard/video card.
319 .It Va COPTFLAGS
320 .Pq Vt str
321 Controls the compiler optimization settings for kernel and module compiles.
322 .It Va KCFLAGS
323 Allows you to add additional compiler flags for kernel and module compiles.
324 But use
325 .Va COPTFLAGS
326 .Pq Vt str
327 to specify any optimization overrides, as some modules may have to override
328 it to enforce a lower optimization level.
329 .It Va KERNCONF
330 .Pq Vt str
331 Controls which kernel configurations will be
332 built by
333 .Dq Li "${MAKE} buildkernel"
334 and installed by
335 .Dq Li "${MAKE} installkernel" .
336 For example,
337 .Bd -literal -offset indent
338 KERNCONF=MINE DEBUG X86_64_GENERIC OTHERMACHINE
339 .Ed
340 .Pp
341 will build the kernels specified by the config files
342 .Pa MINE , DEBUG , X86_64_GENERIC ,
343 and
344 .Pa OTHERMACHINE ,
345 and install the kernel specified by the config file
346 .Pa MINE .
347 It defaults to
348 .Pa X86_64_GENERIC .
349 .It Va NO_CPU_COPTFLAGS
350 .Pq Vt str
351 Setting this variable will prevent CPU specific compiler flags
352 from being automatically added to
353 .Va COPTFLAGS
354 during compile time.
355 .It Va NO_KERNELCLEAN
356 .Pq Vt bool
357 Set this to skip the clean target when using
358 .Dq Li "${MAKE} buildkernel" .
359 .It Va NO_KERNELCONFIG
360 .Pq Vt bool
361 Set this to skip running
362 .Xr config 8
363 during
364 .Dq Li "${MAKE} buildkernel" .
365 .It Va NO_KERNELDEPEND
366 .Pq Vt bool
367 Set this to skip running
368 .Dq Li "${MAKE} depend"
369 during
370 .Dq Li "${MAKE} buildkernel" .
371 .It Va NO_KERNEL_OLD_STRIP
372 .Pq Vt bool
373 Set this to skip stripping debugging symbols from old kernel and modules
374 (kernel.old, modules.old) during
375 .Dq Li "${MAKE} installkernel" .
376 .It Va NO_MODULES
377 .Pq Vt bool
378 Set to not build modules with the kernel.
379 .El
380 .Pp
381 The following list provides a name and short description for variables
382 that are used during the world build:
383 .Bl -tag -width Ar
384 .It Va ENABLE_SUID_SSH
385 .Pq Vt bool
386 Set this to install
387 .Xr ssh 1
388 with the setuid bit turned on.
389 .It Va MODULES_WITH_WORLD
390 .Pq Vt bool
391 Set to build modules with the system instead of the kernel.
392 .It Va NO_ALTBINUTILS
393 .Pq Vt bool
394 Set to not build the alternative (non-default) set of binutils.
395 .It Va NO_ALTCOMPILER
396 .Pq Vt bool
397 Set to not build the designated secondary compiler (GCC 4.7 and others).
398 .It Va NO_CRYPT
399 .Pq Vt bool
400 Set to not build crypto code.
401 .It Va NO_CVS
402 .Pq Vt bool
403 Set to not build CVS.
404 .It Va NO_GAMES
405 .Pq Vt bool
406 Set to not build games.
407 .It Va NO_GDB
408 .Pq Vt bool
409 Set to not build
410 .Xr gdb 1
411 .It Va NO_LIBC_R
412 .Pq Vt bool
413 Set to not build
414 .Nm libc_r
415 (reentrant version of
416 .Nm libc ) .
417 .It Va NO_LPR
418 .Pq Vt bool
419 Set to not build
420 .Xr lpr 1
421 and related programs.
422 .It Va NO_SHARE
423 .Pq Vt bool
424 Set to not enter or install to the share subdirectory.
425 .It Va NOCLEAN
426 .Pq Vt bool
427 Set this to disable cleaning during
428 .Dq Li "make buildworld" .
429 This should not be set unless you know what you are doing.
430 .It Va NOCLEANDIR
431 .Pq Vt bool
432 Set this to run
433 .Dq Li "${MAKE} clean"
434 instead of
435 .Dq Li "${MAKE} cleandir" .
436 .It Va NOFSCHG
437 .Pq Vt bool
438 Set to not install certain components with flag schg.
439 This is useful in a jailed environment.
440 .It Va NOMAN
441 .Pq Vt bool
442 Set to not build manual pages
443 .It Va NOMANCOMPRESS
444 .Pq Vt bool
445 Set to not compress the manual pages.
446 .It Va NOPROFILE
447 .Pq Vt bool
448 Set to avoid compiling profiled libraries.
449 .It Va PPP_NOSUID
450 .Pq Vt bool
451 Set to disable the installation of
452 .Xr ppp 8
453 with the set-user-ID bit on.
454 .It Va XAUTH_PATH
455 .Pq Vt str
456 The path to the xauth program used by OpenSSH client.
457 .It Va SENDMAIL_MC
458 .Pq Vt str
459 The default
460 .Xr m4 1
461 configuration file to use at install time.
462 The value should include the full path to the
463 .Pa .mc
464 file, e.g.,
465 .Pa /etc/mail/myconfig.mc .
466 Use with caution as a make install will overwrite any existing
467 .Pa /etc/mail/sendmail.cf .
468 .It Va SENDMAIL_SUBMIT_MC
469 .Pq Vt str
470 The default
471 .Xr m4 1
472 configuration file for mail submission
473 to use at install time.
474 The value should include the full path to the
475 .Pa .mc
476 file, e.g.,
477 .Pa /etc/mail/mysubmit.mc .
478 Use with caution as a make install will overwrite any existing
479 .Pa /etc/mail/submit.cf .
480 .It Va SENDMAIL_CF_DIR
481 .Pq Vt str
482 Override the default location for the
483 .Xr m4 1
484 configuration files used to build a
485 .Pa .cf
486 file from a
487 .Pa .mc
488 file.
489 The default is
490 .Pa /usr/local/share/sendmail/cf .
491 .It Va SENDMAIL_M4_FLAGS
492 .Pq Vt str
493 Flags passed to
494 .Xr m4 1
495 when building a
496 .Pa .cf
497 file from a
498 .Pa .mc
499 file.
500 .It Va SENDMAIL_MAP_PERMS
501 .Pq Vt str
502 Mode to use when generating alias and map database files using
503 .Pa /etc/mail/Makefile .
504 The default value is 0640.
505 .It Va THREAD_LIB
506 .Pq Vt str
507 Set to either
508 .Li c_r
509 or
510 .Li thread_xu
511 to configure the system's default threading library.
512 The default is
513 .Li thread_xu .
514 .It Va WANT_INSTALLER
515 .Pq Vt bool
516 Set to build the installer.
517 .It Va WANT_NETGRAPH7
518 .Pq Vt bool
519 Set to build a newer, experimental
520 .Xr netgraph 4
521 userland.
522 It has to be accompanied by
523 .Dv NETGRAPH7*
524 options in the kernel.
525 .El
526 .Pp
527 The following list provides a name and short description for variables
528 that are used when building documentation.
529 .Bl -tag -width Ar
530 .It Va PRINTERDEVICE
531 .Pq Vt str
532 The default format for system documentation, depends on your
533 printer.
534 This can be set to
535 .Dq Li ascii
536 for simple printers or
537 .Dq Li ps
538 for postscript or graphics printers with a ghostscript
539 filter.
540 .It Va GROFF_PAPER_SIZE
541 .Pq Vt str
542 The default paper size for
543 .Xr groff 1
544 (either
545 .Dq letter
546 or
547 .Dq A4 ) .
548 .El
549 .Sh FILES
550 .Bl -tag -width /etc/defaults/make.conf -compact
551 .It Pa /etc/defaults/make.conf
552 .It Pa /etc/make.conf
553 .It Pa /usr/src/Makefile
554 .It Pa /usr/src/Makefile.inc1
555 .El
556 .Sh SEE ALSO
557 .Xr gcc 1 ,
558 .Xr install 1 ,
559 .Xr make 1 ,
560 .Xr lpd 8
561 .Sh HISTORY
562 The
563 .Nm
564 file appeared sometime before
565 .Fx 4.0 .
566 .Sh AUTHORS
567 This manual page was written by
568 .An Mike W. Meyer Aq Mt mwm@mired.org .