bsd.README revision 1.328
1#	$NetBSD: bsd.README,v 1.328 2014/02/24 07:23:41 skrll Exp $
2#	@(#)bsd.README	8.2 (Berkeley) 4/2/94
3
4This is the README file for the make "include" files for the NetBSD
5source tree.  The files are installed in /usr/share/mk, and are,
6by convention, named with the suffix ".mk".
7
8Note, this file is not intended to replace reading through the .mk
9files for anything tricky.
10
11=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
12
13RANDOM THINGS WORTH KNOWING:
14
15The files are simply C-style #include files, and pretty much behave like
16you'd expect.  The syntax is slightly different in that a single '.' is
17used instead of the hash mark, i.e. ".include <bsd.prog.mk>".
18
19One difference that will save you lots of debugging time is that inclusion
20of the file is normally done at the *end* of the Makefile.  The reason for
21this is because .mk files often modify variables and behavior based on the
22values of variables set in the Makefile.  To make this work, remember that
23the FIRST target found is the target that is used, i.e. if the Makefile has:
24
25	a:
26		echo a
27	a:
28		echo a number two
29
30the command "make a" will echo "a".  To make things confusing, the SECOND
31variable assignment is the overriding one, i.e. if the Makefile has:
32
33	a=	foo
34	a=	bar
35
36	b:
37		echo ${a}
38
39the command "make b" will echo "bar".  This is for compatibility with the
40way the V7 make behaved.
41
42It's fairly difficult to make the BSD .mk files work when you're building
43multiple programs in a single directory.  It's a lot easier to split up the
44programs than to deal with the problem.  Most of the agony comes from making
45the "obj" directory stuff work right, not because we switched to a new version
46of make.  So, don't get mad at us, figure out a better way to handle multiple
47architectures so we can quit using the symbolic link stuff.  (Imake doesn't
48count.)
49
50The file .depend in the source directory is expected to contain dependencies
51for the source files.  This file is read automatically by make after reading
52the Makefile.
53
54The variable DESTDIR works as before.  It's not set anywhere but will change
55the tree where the file gets installed.
56
57The profiled libraries are no longer built in a different directory than
58the regular libraries.  A new suffix, ".po", is used to denote a profiled
59object, and ".pico" denotes a shared (position-independent) object.
60
61There are various make variables used during the build.
62
63Many variables support a (case sensitive) value of "no" or "yes",
64and are tested with  ${VAR} == "no"  and  ${VAR} != "no" .
65
66
67The basic rule for the variable naming scheme is as follows:
68
69HOST_xxx	A command that runs on the host machine regardless of
70		whether or not the system is being cross compiled, or
71		flags for such a command.
72
73MKxxx		Can be set to "no" to disable functionality, or
74		"yes" to enable it.
75		Usually defaults to "yes", although some variables
76		default to "no".
77		Due to make(1) implementation issues, if a temporary
78		command-line override of a mk.conf(5) or <bsd.own.mk>
79		setting is required whilst still honoring a particular
80		Makefile's setting of MKxxx, use
81			env MKxxx=value make
82		instead of
83			make MKxxx=value
84
85NOxxx		If defined, disables a feature.
86		Not intended for users.
87		This is to allow Makefiles to disable functionality
88		that they don't support (such as missing man pages).
89		NOxxx variables must be defined before <bsd.own.mk>
90		is included.
91
92TOOL_xxx	A tool that is provided as part of the USETOOLS
93		framework.  When not using the USETOOLS framework,
94		TOOL_xxx variables should refer to tools that are
95		already installed on the host system.
96
97The following variables that control how things are made/installed that
98are not set by default. These should not be set by Makefiles; they're for
99the user to define in MAKECONF (see <bsd.own.mk>, below, or mk.conf(5))
100or on the make(1) command line:
101
102BUILD 		If defined, 'make install' checks that the targets in the
103		source directories are up-to-date and remakes them if they
104                are out of date, instead of blindly trying to install
105                out of date or non-existent targets.
106
107MAKEVERBOSE	Control how "verbose" the standard make(1) rules are.
108		Default: 2
109		Supported values:
110		    0	Minimal output ("quiet")
111		    1	Describe what is occurring
112		    2	Describe what is occurring and echo the actual command
113		    3	Ignore the effect of the "@" prefix in make commands
114		    4	Trace shell commands using the shell's -x flag
115
116MKATF		If "no", don't build the Automated Testing Framework (ATF),
117		which includes the libatf-c, libatf-c++ and libatf-sh libraries
118		and the various command line tools.  Also, because the build of
119		the libraries is disabled, don't build the NetBSD test suite
120		either.
121		Default: yes
122
123MKBFD		Obsolete, use MKBINUTILS
124
125MKBINUTILS	If "no", don't build binutils (gas, ld, etc and libbfd,
126		libopcodes)
127		Default: yes
128
129MKBSDTAR	If "yes", use the libarchive based cpio and tar instead of
130		the pax frontends.
131		Default: no
132
133MKCATPAGES	If "no", don't build or install the catman pages.
134		Default: no
135
136MKCOMPAT  	If "no", don't build or install the src/compat.
137		Default: yes on amd64/mips64/sparc64, no elsewhere.
138
139MKCOMPLEX	If "no", don't build libm support for <complex.h>
140		Default: yes
141
142MKCRYPTO	If "no", no cryptography support will be built into the system,
143		and also acts as "MKKERBEROS=no".
144		Default: yes
145
146MKCRYPTO_RC5	If not "no", RC5 support will be built into libcrypto_rc5
147		Default: no
148
149MKCVS		If "no", don't build or install cvs(1).
150		Default: yes
151
152MKDEBUG		If "no", don't build and install separate debugging symbols
153		into /usr/libdata/debug.
154		Default: no
155
156MKDEBUGLIB	Build *_g.a debugging libraries, which are compiled
157		with -DDEBUG.
158		Default: no
159
160MKDEPINCLUDES	If "yes" issue .include statements in the .depend file
161		instead of inlining the contents of the .d files. Useful
162		when stale dependencies are present, to list the exact
163		files that need refreshing. It is off by default because
164		it is possibly slower.
165		Default "no"
166
167MKDOC		If "no", don't build or install the documentation.
168		Default: yes
169
170MKDTRACE	If "no", do not build and install the kernel modules,
171		utilities and libraries used to implement the dtrace(1)
172		facility.
173		Default: no
174
175MKDYNAMICROOT	If "no", build programs in /bin and /sbin statically,
176		don't install certain libraries in /lib, and don't
177		install the shared linker into /libexec.
178		Default: yes
179
180MKEXTSRC        If not "no", 'make build' also descends into either src/extsrc
181		to cross-build programs and libraries externally added by
182		users, and automatically enables creation of those sets.
183		Default: no
184
185MKGCC		If "no", don't build gcc(1) or any of the GCC-related
186		libraries (libgcc, libobjc, libstdc++).
187		Default: yes
188
189MKGCCCMDS	If "no", don't build gcc(1), but do build the GCC-related
190		libraries (libgcc, libobjc, libstdc++).
191		Default: yes
192
193MKGDB		If "no", don't build gdb(1).
194		Default: yes
195
196MKHESIOD	If "no", disables building of Hesiod infrastructure
197		(libraries and support programs).
198		Default: yes
199
200MKHOSTOBJ	If not "no", for programs intended to be run on the compile
201		host, the name, release, and architecture of the host
202		operating system will be suffixed to the name of the object
203		directory created by "make obj".
204		Default: no
205
206MKHTML		If "no", don't build or install the HTML man pages.
207		Default: yes
208
209MKIEEEFP	If "no", don't add code for IEEE754/IEC60559 conformance.
210		Has no effect on most platforms.
211		Default: yes
212
213MKSTRIPIDENT	Strip the RCS IDs from program binaries and shared libraries.
214		Default: no
215
216MKINET6		If "no", disables building of INET6 (IPv6) infrastructure
217		(libraries and support programs).  This option must not be
218		set to "no" if MKX11 is not "no".
219		Default: yes
220
221MKINFO		If "no", don't build or install Info documentation from
222		Texinfo source files.
223		Default: yes
224
225MKIPFILTER	If "no", don't build or install the IP Filter programs and LKM.
226		Default: yes
227
228MKISCSI		If "no", don't build or install iSCSI library or applications
229		(depends on libpthread.)
230		Default: yes
231
232MKKERBEROS	If "no", disables building of Kerberos v5
233		infrastructure (libraries and support programs).
234		Default: yes
235
236MKKMOD		If "no", disables building of kernel modules.
237		Default: yes
238
239MKKYUA		If "no", don't build Kyua nor its dependent library Lutok.
240		Note that setting this to "no" does not disable the build of
241		the NetBSD test suite itself; the build of the tests is
242		controlled by the MKATF knob.
243		Default: no (until the import is done and validated)
244
245MKLDAP		If "no", disables building of LDAP infrastructure
246		(libraries and support programs).
247		Default: yes
248
249MKLIBCXX	If not "no", build and install libc++.
250		Default: no
251
252MKLIBSTDCXX	If not "no", build and install libstdc++.
253		Default: yes
254
255MKLINKLIB	If "no", act as "MKLINT=no MKPICINSTALL=no MKPROFILE=no".
256		Also:
257			- don't install the .a libraries
258			- don't install _pic.a libraries on PIC systems
259			- don't build .a libraries on PIC systems
260			- don't install the .so symlink on ELF systems
261		I.e, only install the shared library (and the .so.major
262		symlink on ELF).
263		Default: yes
264
265MKLINT		If "no", don't build or install the lint libraries.
266		Default: yes
267
268MKLVM		If "no", don't build or install the logical volume manager
269		and device mapper tools and libraries
270		Default: yes
271
272MKMAN		If "no", don't build or install the man or catman pages,
273		and also acts as "MKCATPAGES=no MKHTML=no".
274		Default: yes
275
276MKMANDOC	If "yes", mandoc is built as tool and used to compile
277		catman or html pages.  A directory can be exempted by
278		defining NOMANDOC.  Individual man pages are exempted
279		if NOMANDOC.${target} is set to "yes".
280		Default: yes
281
282MKMANZ		If not "no", compress manual pages at installation time.
283		Default: no
284
285MKMDNS		If "no", disables building of mDNS infrastructure
286		(libraries and support programs).
287		Default: yes
288
289MKNLS		If "no", don't build or install the NLS files and locale
290		definition files.
291		Default: yes
292
293MKNPF		If "no", don't build or install the NPF and its modules.
294		Default: yes
295
296MKOBJ		If "no", don't enable the rule which creates objdirs,
297		and also acts as "MKOBJDIRS=no".
298		Default: yes
299
300MKOBJDIRS	If "no", don't create objdirs during a "make build".
301		Default: no
302
303MKPAM		If "no", disables building of PAM authentication
304		infrastructure (libraries and support programs).
305		Default: yes
306
307MKPCC		If "no", don't build pcc(1) or any of the PCC-related
308		libraries (libpcc, libpccsoftfloat).
309		Default: no
310
311MKPF		If "no", don't build or install the pf programs and LKM.
312		Default: yes
313
314MKPIC		If "no", don't build or install shared libraries, and
315		also acts as "MKPICLIB=no"
316		Default: yes (for MACHINE_ARCHs that support it)
317
318MKPICINSTALL	If "no", don't install the *_pic.a libraries.
319		Default: yes
320
321MKPICLIB	If "no", don't build *_pic.a libraries, and build the
322		shared object libraries from the .a libraries.
323		A symlink is installed in ${DESTDIR}/usr/lib for the
324		_pic.a library pointing to the .a library.
325		Default: yes
326
327MKPIE		If "no", create regular executables. Otherwise create
328		PIE (Position Independent Executables).
329		Default: no
330
331MKPIGZGZIP	If "no", only install pigz as pigz, not gzip.
332		Default: no
333
334MKPOSTFIX	If "no", don't build or install postfix(1).
335		Default: yes
336
337MKPROFILE	If "no", don't build or install the profiling (*_p.a) libraries.
338		Default: yes
339
340MKREPRO         If "yes", create reproducable builds. This enables
341		different switches to make two builds from the same source tree
342		result in the same build results.
343		Default: no
344
345MKSHARE		If "no", act as "MKCATPAGES=no MKDOC=no MKHTML=no MKINFO=no
346		MKMAN=no MKNLS=no".
347		I.e, don't build catman pages, documentation, Info
348		documentation, man pages, NLS files, ...
349		Default: yes
350
351MKSKEY		If "no", disables building of S/key authentication
352		infrastructure (libraries and support programs).
353		Default: yes
354
355MKSLJIT		If "no", disables building of sljit (stack-less platform
356		independent JIT compiler) private library and tests.
357		Default: yes on amd64, i386 and sparc, no elsewhere.
358
359MKSOFTFLOAT	If not "no", build with options to enable the compiler to
360		generate output containing library calls for floating
361		point and possibly soft-float library support.
362		Default: no
363
364MKSTATICLIB	If "no", don't build or install the normal static (*.a)
365		libraries.
366		Default: yes
367
368MKTPM		If "no" then don't build the Trusted Platform Module
369		infrastructure.
370		Default: no
371
372MKUNPRIVED	If not "no", don't set the owner/group/mode when installing
373		files or directories, and keep a metadata log of what
374		the owner/group/mode should be.  This allows a
375		non-root "make install".
376		Default: no
377
378MKUPDATE 	If not "no", 'make install' only installs targets that are
379		more recently modified in the source directories that their
380		installed counterparts.
381		Default: no
382
383MKX11		If not "no", depending on the value of ${X11FLAVOUR},
384		'make build' also descends into either src/x11 (XFree86) or
385		src/external/mit/xorg (modular Xorg) to cross-build X11 and
386		automatically enables creation of X sets.
387		Default: no
388
389MKX11FONTS	If not "no", if ${X11FLAVOUR} is "Xorg", do not build or
390		install the X fonts.  The xfont set is still created but
391		will be empty.
392		Default: yes
393
394MKX11MOTIF:	If "yes" and ${X11FLAVOUR} is "Xorg", build the native X11
395		libGLw with Motif stubs.  If Motif is not installed in the
396		default location /usr/pkg, the location can be specified
397		using the X11MOTIFPATH variable.
398		Default: no
399
400MKYP		If "no", disables building of YP (NIS)
401		infrastructure (libraries and support programs).
402		Default: yes
403
404MKZFS		If "no", do not build and install utilities and libraries
405		used to manage ZFS file system. Do not build zfs and solaris
406		compatibility kernel modules.
407		Default: yes on i386/amd64, no elsewhere.
408
409MKRUMP		If "no", do not build and install rump related headers,
410		libraries, and programs.
411		Default: yes
412
413USE_HESIOD	If "no", disables building Hesiod support into
414		various system utilities/libraries that support it.
415		If ${MKHESIOD} is "no", USE_HESIOD will also be
416		forced to "no".
417
418USE_INET6	If "no", disables building INET6 (IPv6) support into
419		various system utilities/libraries that support it.
420		If ${MKINET6} is "no", USE_INET6 will also be
421		forced to "no".
422
423USE_JEMALLOC	If "no", disables building the "jemalloc" allocator
424		designed for improved performance with threaded
425		applications.  The "phkmalloc" allocator as used up
426		before NetBSD-5.0 will be substituted.
427
428USE_KERBEROS	If "no", disables building Kerberos v5
429		support into various system utilities/libraries that
430		support it.  If ${MKKERBEROS} is "no", USE_KERBEROS
431		will also be forced to "no".
432
433USE_LDAP	If "no", disables building LDAP support into various
434		system utilities/libraries that support it.
435		If ${MKLDAP} is "no", USE_LDAP will also be forced to "no".
436
437USE_PAM		If "no", disables building PAM authentication support
438		into various system utilities/libraries that support it.
439		If ${MKPAM} is "no", USE_PAM will also be forced to "no".
440
441USE_SKEY	If "no", disables building S/key authentication
442		support into various system utilities/libraries that
443		support it.  If ${MKSKEY} is "no", USE_SKEY will
444		also be forced to "no".
445		Default: no
446
447USE_SSP		If "no", disables GCC stack protection code, which
448		detects stack overflows and aborts the program. The
449		stack protection code imposes a performance penalty
450		of about 5%.
451		Default: "no", unless "USE_FORT" is set to "yes"
452
453USE_FORT 	If "yes" turns on substitute wrappers for commonly used
454		functions that do not do bounds checking regularly, but
455		they could in some cases by using the gcc
456		__builtin_object_size() function to determine the buffer
457		size where it is known and detect buffer overflows.
458		These substitute functions are in /usr/include/ssp.
459		Default: depends on the part of the source tree
460
461USE_YP		If "no", disables building YP (NIS) support into
462		various system utilities/libraries that support it.
463		If ${MKYP} is "no", USE_YP will also be forced to "no".
464
465USE_PIGZGZIP	If "no", use the host "gzip" program to compress things.
466		Otherwise, build tools/pigz, set TOOL_GZIP=${TOOL_PIGZ},
467		and use nbpigz to compress things.
468		Default: "no".
469
470X11FLAVOUR	Set to "Xorg" or "XFree86", depending on whether to build
471		XFree86 or modular Xorg.  Only matters if MKX11!=no.
472		Default: "Xorg" on amd64, i386, macppc, shark and sparc64,
473		"XFree86" on everything else.
474
475COPTS.lib<lib>
476OBJCOPTS.lib<lib>
477LDADD.lib<lib>
478CPPFLAGS.lib<lib>
479CXXFLAGS.lib<lib>
480COPTS.<prog>
481OBJCCOPTS.<prog>
482LDADD.<prog>
483CPPFLAGS.<prog>
484CXXFLAGS.<prog>	These provide a way to specify additions to the associated
485		variables in a way that applies only to a particular library
486		or program.  <lib> corresponds to the LIB variable set in
487		the library's makefile.  <prog> corresponds to either PROG
488		or PROG_CXX (if set).  For example, if COPTS.libcrypto is
489		set to "-g", "-g" will be added to COPTS only when compiling
490		the crypto library.
491
492The active compiler is selected using the following variables:
493AVAILABLE_COMPILER
494		List of available compiler suites.  Processed in order
495		for selecting the active compiler for each frontend.
496HAVE_PCC	If defined, PCC is present and enabled.
497HAVE_LLVM	If defined, LLVM/Clang is present and enabled.
498UNSUPPORTED_COMPILER.xxx
499		If defined, the support for compiler "xxx" is disabled.
500
501For the frontends (CC, CPP, CXX, FC and OBJC) the following variables exist:
502ACTIVE_CC	Active compile suite for the CC frontend.
503SUPPORTED_CC	Compile suite with support for the CC frontend.
504TOOL_CC.xxx	Path to the CC frontend for compiler "xxx"
505
506=-=-=-=-=   sys.mk   =-=-=-=-=
507
508The include file <sys.mk> has the default rules for all makes, in the BSD
509environment or otherwise.  You probably don't want to touch this file.
510
511=-=-=-=-=   bsd.own.mk   =-=-=-=-=
512
513The include file <bsd.own.mk> contains source tree configuration parameters,
514such as the owners, groups, etc. for both manual pages and binaries, and
515a few global "feature configuration" parameters.
516
517It has no targets.
518
519To get system-specific configuration parameters, <bsd.own.mk> will try to
520include the file specified by the "MAKECONF" variable.  If MAKECONF is not
521set, or no such file exists, the system make configuration file, /etc/mk.conf
522is included.  These files may define any of the variables described below.
523
524<bsd.own.mk> sets the following variables, if they are not already defined
525(defaults are in brackets):
526
527NETBSDSRCDIR	Top of the NetBSD source tree.
528		If _SRC_TOP_ != "", that will be used as the default,
529		otherwise BSDSRCDIR will be used as the default.
530		Various makefiles within the NetBSD source tree will
531		use this to reference the top level of the source tree.
532
533_SRC_TOP_	Top of the system source tree, as determined by <bsd.own.mk>
534		based on the presence of tools/ and build.sh.  This variable
535		is "internal" to <bsd.own.mk>, although its value is only
536		determined once and then propagated to all sub-makes.
537
538_NETBSD_VERSION_DEPENDS
539		A list of files which contain information about
540		the version of the NetBSD being built.  This is
541		defined only if the current directory appears
542		to be inside a NetBSD source tree.  The list of
543		files includes ${NETBSDSRCDIR}/sys/sys/param.h
544		(which contains the kernel version number),
545		${NETBSDSRCDIR}/sys/conf/newvers.sh and
546		${NETBSDSRCDIR}/sys/conf/osrelease.sh (which
547		interpret the information in sys/sys/param.h), and
548		${_SRC_TOP_OBJ_}/params (which is an optional file,
549		created by "make build" in ${_SRC_TOP_}/Makefile,
550		containing all the variables that may influence the
551		build).
552
553		Targets that depend on the NetBSD version, or on
554		variables defined at build time, can declare a
555		dependency on ${_NETBSD_VERSION_DEPENDS}, like this:
556
557			version.c: ${_NETBSD_VERSION_DEPENDS}
558				commands to create version.c
559
560BSDSRCDIR	The real path to the system sources, so that 'make obj'
561		will work correctly.  [/usr/src]
562
563BSDOBJDIR	The real path to the system 'obj' tree, so that 'make obj'
564		will work correctly.  [/usr/obj]
565
566BINGRP		Binary group.  [wheel]
567
568BINOWN		Binary owner.  [root]
569
570BINMODE		Binary mode.  [555]
571
572NONBINMODE	Mode for non-executable files.  [444]
573
574MANDIR		Base path for manual installation.  [/usr/share/man/cat]
575
576MANGRP		Manual group.  [wheel]
577
578MANOWN		Manual owner.  [root]
579
580MANMODE		Manual mode.  [${NONBINMODE}]
581
582MANINSTALL	Manual installation type.  Space separated list:
583			catinstall, htmlinstall, maninstall
584		Default value derived from MKCATPAGES and MKHTML.
585
586LDSTATIC	Control program linking; if set blank, link everything
587		dynamically.  If set to "-static", link everything statically.
588		If not set, programs link according to their makefile.
589
590LIBDIR		Base path for library installation.  [/usr/lib]
591
592LINTLIBDIR	Base path for lint(1) library installation.  [/usr/libdata/lint]
593
594LIBGRP		Library group.  [${BINGRP}]
595
596LIBOWN		Library owner.  [${BINOWN}]
597
598LIBMODE		Library mode.  [${NONBINMODE}]
599
600DOCDIR		Base path for system documentation (e.g. PSD, USD, etc.)
601	        installation.  [/usr/share/doc]
602
603HTMLDOCDIR	Base path for html system documentation installation.
604		[/usr/share/doc/html]
605
606DOCGRP		Documentation group.  [wheel]
607
608DOCOWN		Documentation owner.  [root]
609
610DOCMODE		Documentation mode.  [${NONBINMODE}]
611
612NLSDIR		Base path for Native Language Support files installation.
613		[/usr/share/nls]
614
615NLSGRP		Native Language Support files group.  [wheel]
616
617NLSOWN		Native Language Support files owner.  [root]
618
619NLSMODE		Native Language Support files mode.  [${NONBINMODE}]
620
621X11SRCDIR	The path to the xsrc tree.  [${NETBSDSRCDIR}/../xsrc,
622		if that exists; otherwise /usr/xsrc]
623
624X11SRCDIR.xc	The path to the (old) X11 xc src tree.  [${X11SRCDIR}/xfree/xc]
625
626X11SRCDIR.local	The path to the local X11 src tree.  [${X11SRCDIR}/local]
627
628X11SRCDIR.lib<package>
629X11SRCDIR.<package>
630		The path to the xorg src tree for the specificed package>.
631		[${X11SRCDIR}/external/mit/xorg/<package>/dist]
632
633X11ROOTDIR	Root directory of the X11 installation.  [/usr/X11R6 or
634		[/usr/X11R7]
635
636X11BINDIR	X11 bin directory.  [${X11ROOTDIR}/bin]
637
638X11FONTDIR	X11 font directory.  [${X11ROOTDIR}/lib/X11/fonts]
639
640X11INCDIR	X11 include directory.  [${X11ROOTDIR}/include]
641
642X11LIBDIR	X11 lib/x11 (config) directory.  [${X11ROOTDIR}/lib/X11]
643
644X11MANDIR	X11 manual directory.  [${X11ROOTDIR}/man]
645
646X11USRLIBDIR	X11 library directory.  [${X11ROOTDIR}/lib]
647
648STRIPFLAG	The flag passed to the install program to cause the binary
649		to be stripped.  This is to be used when building your
650		own install script so that the entire system can be made
651		stripped/not-stripped using a single knob.  []
652
653COPY		The flag passed to the install program to cause the binary
654		to be copied rather than moved.  This is to be used when
655		building our own install script so that the entire system
656		can either be installed with copies, or with moves using
657		a single knob.  [-c]
658
659MAKEDIRTARGETENV
660		Environment variables passed to the child make process
661		invoked by MAKEDIRTARGET.
662
663MAKEDIRTARGET dir target [params]
664		Runs "cd $${dir} && ${MAKE} [params] $${target}",
665		displaying a "pretty" message whilst doing so.
666
667RELEASEMACHINEDIR
668		Subdirectory used below RELEASEDIR when building
669		a release.  [${MACHINE}]
670
671RELEASEMACHINE	Subdirectory or path component used for the following
672		paths:
673			distrib/${RELEASEMACHINE}
674			distrib/notes/${RELEASEMACHINE}
675			etc/etc.${RELEASEMACHINE}
676		Used when building a release.  [${MACHINE}]
677
678Additionally, the following variables may be set by <bsd.own.mk> or in a
679make configuration file to modify the behavior of the system build
680process (default values are in brackets along with comments, if set by
681<bsd.own.mk>):
682
683USETOOLS	Indicates whether the tools specified by ${TOOLDIR} should
684		be used as part of a build in progress.
685		Supported values:
686
687		yes	Use the tools from TOOLDIR.
688			Must be set to this if cross-compiling.
689
690		no	Do not use the tools from TOOLDIR, but refuse to
691			build native compilation tool components that are
692			version-specific for that tool.
693
694		never	Do not use the tools from TOOLDIR, even when
695			building native tool components.  This is similar to
696			the traditional NetBSD build method, but does not
697			verify that the compilation tools in use are
698			up-to-date enough in order to build the tree
699			successfully.  This may cause build or runtime
700			problems when building the whole NetBSD source tree.
701
702		Default: "yes" if building all or part of a whole NetBSD
703		source tree (detected automatically); "no" otherwise
704		(to preserve traditional semantics of the <bsd.*.mk>
705		make(1) include files).
706
707OBJECT_FMT	Object file format.  [set to "ELF" on architectures that
708		use ELF -- currently all architectures].
709
710TOOLCHAIN_MISSING
711		If not "no", this indicates that the platform being built
712		does not have a working in-tree toolchain.  If the
713		${MACHINE_ARCH} in question falls into this category,
714		TOOLCHAIN_MISSING is conditionally assigned the value "yes".
715		Otherwise, the variable is unconditionally assigned the
716		value "no".
717		If not "no", ${MKBINUTILS}, ${MKGCC}, and ${MKGDB} are
718		unconditionally assigned the value "no".
719
720EXTERNAL_TOOLCHAIN
721		This variable is not directly set by <bsd.own.mk>, but
722		including <bsd.own.mk> is the canonical way to gain
723		access to this variable.  The variable should be defined
724		either in the user's environment or in the user's mk.conf
725		file.  If defined, this variable indicates the root of
726		an external toolchain which will be used to build the
727		tree.  For example, if a platform is a ${TOOLCHAIN_MISSING}
728		platform, EXTERNAL_TOOLCHAIN can be used to re-enable the
729		cross-compile framework.
730
731		If EXTERNAL_TOOLCHAIN is defined, ${MKGCC} is unconditionally
732		assigned the value "no", since the external version of the
733		compiler may not be able to build the library components of
734		the in-tree compiler.
735
736		NOTE: This variable is not yet used in as many places as
737		it should be.  Expect the exact semantics of this variable
738		to change in the short term as parts of the cross-compile
739		framework continue to be cleaned up.
740
741The following variables are defined to commands to perform the
742appropriate operation, with the default in [brackets].  Note that
743the defaults change if USETOOLS == "yes":
744
745TOOL_AMIGAAOUT2BB	aout to Amiga bootblock converter.  [amiga-aout2bb]
746
747TOOL_AMIGAELF2BB	ELF to Amiga bootblock converter.  [amiga-elf2bb]
748
749TOOL_AMIGATXLT		Amige assembly language format translator.  [amiga-txlt]
750
751TOOL_ASN1_COMPILE	ASN1 compiler.  [asn1_compile]
752
753TOOL_AWK		Pattern-directed scanning/processing language.  [awk]
754
755TOOL_CAP_MKDB		Create capability database.  [cap_mkdb]
756
757TOOL_CAT		Concatenate and print files.  [cat]
758
759TOOL_CKSUM		Display file checksums.  [cksum]
760
761TOOL_COMPILE_ET		Error table compiler.  [compile_et]
762
763TOOL_CONFIG		Build kernel compilation directories.  [config]
764
765TOOL_CRUNCHGEN		Generate crunched binary build environment.  [crunchgen]
766
767TOOL_CTAGS		Create a tags file.  [ctags]
768
769TOOL_DB			Manipulate db(3) databases.  [db]
770
771TOOL_DISKLABEL		Read and write disk pack label.  [disklabel]
772
773TOOL_EQN		Format equations for groff.  [eqn]
774
775TOOL_FDISK		MS-DOS partition maintenance program.  [fdisk]
776
777TOOL_FGEN		IEEE 1275 Open Firmware FCode Tokenizer.  [fgen]
778
779TOOL_GENASSYM		Generate constants for assembly files.  [genassym]
780
781TOOL_GENCAT		Generate NLS message catalogs.  [gencat]
782
783TOOL_GMAKE		GNU make utility.  [gmake]
784
785TOOL_GREP		Print lines matching a pattern.  [grep]
786
787TOOL_GROFF		Front end for groff document formatting system.  [groff]
788
789TOOL_GZIP		Compression/decompression tool.  [gzip]
790
791TOOL_HEXDUMP		Ascii, decimal, hexadecimal, octal dump.  [hexdump]
792
793TOOL_HP300MKBOOT	Make bootable image for hp300.  [hp300-mkboot]
794
795TOOL_HPPAMKBOOT		Make bootable image for hppa.  [hppa-mkboot]
796
797TOOL_INDXBIB		Make bibliographic database's inverted index.  [indxbib]
798
799TOOL_INSTALLBOOT	Install disk bootstrap software.  [installboot]
800
801TOOL_INSTALL_INFO	Update info/dir entries.  [install-info]
802
803TOOL_JOIN		Relational database operator.  [join]
804
805TOOL_M4			M4 macro language processor.  [m4]
806
807TOOL_MACPPCFIXCOFF	Fix up xcoff headers for macppc.  [macppc-fixcoff]
808
809TOOL_MAKEFS		Create file system image from directory tree.  [makefs]
810
811TOOL_MAKEINFO		Translate Texinfo documents.  [makeinfo]
812
813TOOL_MAKEWHATIS		Create a whatis.db database.  [makewhatis]
814
815TOOL_MDSETIMAGE		Set kernel RAM disk image.  [mdsetimage]
816
817TOOL_MENUC		Menu compiler.  [menuc]
818
819TOOL_MIPSELF2ECOFF	Convert ELF-format executable to ECOFF for mips.
820			[mips-elf2ecoff]
821
822TOOL_MKCSMAPPER		Make charset mapping table.  [mkcsmapper]
823
824TOOL_MKESDB		Make encoding scheme database.  [mkesdb]
825
826TOOL_MKLOCALE		Make LC_CTYPE locale files.  [mklocale]
827
828TOOL_MKMAGIC		Create database for file(1).  [file]
829
830TOOL_MKNOD		Make device special file.  [mknod]
831
832TOOL_MKTEMP		Make (unique) temporary file name.  [mktemp]
833
834TOOL_MSGC		Simple message list compiler.  [msgc]
835
836TOOL_MTREE		Map a directory hierarchy.  [mtree]
837
838TOOL_PAX		Manipulate file archives and copy directories.  [pax]
839
840TOOL_PIC		Compile pictures for groff.  [pic]
841
842TOOL_PIGZ		Parallel compressor.  [pigz]
843
844TOOL_POWERPCMKBOOTIMAGE	Make bootable image for powerpc.  [powerpc-mkbootimage]
845
846TOOL_PWD_MKDB		Generate the password databases.  [pwd_mkdb]
847
848TOOL_REFER		Preprocess bibliographic references for groff.  [refer]
849
850TOOL_ROFF_ASCII		Generate ASCII groff output.  [nroff]
851
852TOOL_ROFF_DVI		Generate DVI groff output.  [${TOOL_GROFF} -Tdvi]
853
854TOOL_ROFF_HTML		Generate HTML groff output.
855			[${TOOL_GROFF} -Tlatin1 -mdoc2html]
856
857TOOL_ROFF_PS		Generate PS groff output.  [${TOOL_GROFF} -Tps]
858
859TOOL_ROFF_RAW		Generate "raw" groff output.  [${TOOL_GROFF} -Z]
860
861TOOL_RPCGEN		Remote Procedure Call (RPC) protocol compiler.  [rpcgen]
862
863TOOL_SED		Stream editor.  [sed]
864
865TOOL_SOELIM		Eliminate .so's from groff input.  [soelim]
866
867TOOL_SPARKCRC		Generate a crc suitable for use in a sparkive file.
868			[sparkcrc]
869
870TOOL_STAT		Display file status.  [stat]
871
872TOOL_STRFILE		Create a random access file for storing strings.
873			[strfile]
874
875TOOL_SUNLABEL		Read or modify a SunOS disk label.  [sunlabel]
876
877TOOL_TBL		Format tables for groff.  [tbl]
878
879TOOL_UUDECODE		Uudecode a binary file.  [uudecode]
880
881TOOL_VGRIND		Grind nice listings of programs.  [vgrind -f]
882
883TOOL_ZIC		Time zone compiler.  [zic]
884
885For each possible value of MACHINE_CPU, MACHINES.${MACHINE_CPU} contain a
886list of what ports can be built for it.  This keeps those definitions in
887centralized place.
888
889<bsd.own.mk> is generally useful when building your own Makefiles so that
890they use the same default owners etc. as the rest of the tree.
891
892
893=-=-=-=-=   bsd.clean.mk   =-=-=-=-=
894
895The include file <bsd.clean.mk> defines the clean and cleandir
896targets.  It uses the following variables:
897
898CLEANFILES	Files to remove for both the clean and cleandir targets.
899
900CLEANDIRFILES	Files to remove for the cleandir target, but not for
901		the clean target.
902
903MKCLEANSRC	Controls whether or not the clean and cleandir targets
904		will delete files from both the object directory,
905		${.OBJDIR}, and the source directory, ${.CURDIR}.
906
907		If MKCLEANSRC is set to "no", then the file names in
908		CLEANFILES or CLEANDIRFILES are interpreted relative
909		to the object directory, ${.OBJDIR}.  This is the
910		traditional behaviour.
911
912		If MKCLEANSRC is set to "yes", then the file deletion
913		is performed relative to both the object directory,
914		${.OBJDIR}, and the source directory, ${.CURDIR}.  (This
915		has no effect if ${.OBJDIR} is the same as ${.CURDIR}.)
916		Deleting files from ${.CURDIR} is intended to remove
917		stray output files that had been left in the source
918		directory by an earlier build that did not use object
919		directories.
920
921		The default is MKCLEANSRC=yes.  If you always build with
922		separate object directories, and you are sure that there
923		are no stray files in the source directories, then you
924		may set MKCLEANSRC=no to save some time.
925
926MKCLEANVERIFY	Controls whether or not the clean and cleandir targets
927		will verify that files have been deleted.
928
929		If MKCLEANVERIFY is set to "no", then the files will
930		be deleted using a "rm -f" command, and its success or
931		failure will be ignored.
932
933		If MKCLEANVERIFY is set to "yes", then the success of
934		the "rm -f" command will be verified using an "ls"
935		command.
936
937		The default is MKCLEANVERIFY=yes.  If you are sure that
938		there will be no problems caused by file permissions,
939		read-only file systems, or the like, then you may set
940		MKCLEANVERIFY=no to save some time.
941
942To use the clean and cleandir targets defined in <bsd.clean.mk>, other
943Makefiles or bsd.*.mk files should append file names to the CLEANFILES
944or CLEANDIRFILES variables.  For example:
945
946	    CLEANFILES+= a.out
947	    CLEANDIRFILES+= .depend
948
949	    .include <bsd.clean.mk>
950
951The files listed in CLEANFILES and CLEANDIRFILES must not be
952directories, because the potential risk from running "rm -rf" commands
953in bsd.clean.mk is considered too great.  If you want to recursively
954delete a directory as part of "make clean" or "make cleandir" then you
955need to provide your own target.
956
957=-=-=-=-=   bsd.dep.mk   =-=-=-=-=
958
959The include file <bsd.dep.mk> contains the default targets for building
960.depend files.  It creates .d files from entries in SRCS and DPSRCS
961that are C, C++, or Objective C source files, and builds .depend from the
962.d files.  All other files in SRCS and all of DPSRCS will be used as
963dependencies for the .d files.  In order for this to function correctly,
964it should be .included after all other .mk files and directives that may
965modify SRCS or DPSRCS.  It uses the following variables:
966
967SRCS		List of source files to build the program.
968
969DPSRCS		List of source files which are needed for generating
970		dependencies, but are not needed in ${SRCS}.
971
972
973=-=-=-=-=   bsd.files.mk   =-=-=-=-=
974
975The include file <bsd.files.mk> handles the FILES variables and is included
976from <bsd.lib.mk> and <bsd.prog.mk>, and uses the following variables:
977
978FILES		The list of files to install.
979
980CONFIGFILES	Similar semantics to FILES, except that the files
981		are installed by the `configinstall' target,
982		not the `install' target.
983		The FILES* variables documented below also apply.
984
985FILESOWN	File owner.  [${BINOWN}]
986
987FILESGRP	File group.  [${BINGRP}]
988
989FILESMODE	File mode.  [${NONBINMODE}]
990
991FILESDIR	The location to install the files.
992
993FILESNAME	Optional name to install each file as.
994
995FILESOWN_<fn>	File owner of the specific file <fn>.
996
997FILESGRP_<fn>	File group of the specific file <fn>.
998
999FILESMODE_<fn>	File mode of the specific file <fn>.
1000
1001FILESDIR_<fn>	The location to install the specific file <fn>.
1002
1003FILESNAME_<fn>	Optional name to install <fn> as.
1004
1005FILESBUILD	If this variable is defined, then its value will be
1006		used as the default for all FILESBUILD_<fn> variables.
1007		Otherwise, the default will be "no".
1008
1009FILESBUILD_<fn>	A value different from "no" will add the file to the list of
1010		targets to be built by `realall'.  Users of that variable
1011		should provide a target to build the file.
1012
1013
1014BUILDSYMLINKS	List of two word items:
1015			lnsrc lntgt
1016		For each lnsrc item, create a symlink named lntgt.
1017		The lntgt symlinks are removed by the cleandir target.
1018
1019UUDECODE_FILES	List of files which are stored as <file>.uue in the source
1020		tree. Each one will be decoded with ${TOOL_UUDECODE}.
1021		The source files have a `.uue' suffix, the generated files do
1022		not.
1023
1024UUDECODE_FILES_RENAME_<fn>
1025		Rename the output from the decode to the provided name.
1026		
1027		*NOTE: These files are simply decoded, with no install or other
1028		       rule applying implicitly except being added to the clean
1029		       target.
1030
1031=-=-=-=-=   bsd.gcc.mk   =-=-=-=-=
1032
1033The include file <bsd.gcc.mk> computes various parameters related to GCC
1034support libraries.  It defines no targets.  <bsd.own.mk> MUST be included
1035before <bsd.gcc.mk>.
1036
1037The primary users of <bsd.gcc.mk> are <bsd.prog.mk> and <bsd.lib.mk>, each
1038of which need to know where to find certain GCC support libraries.
1039
1040The behavior of <bsd.gcc.mk> is influenced by the EXTERNAL_TOOLCHAIN variable,
1041which is generally set by the user.  If EXTERNAL_TOOLCHAIN it set, then
1042the compiler is asked where to find the support libraries, otherwise the
1043support libraries are found in ${DESTDIR}/usr/lib.
1044
1045<bsd.gcc.mk> sets the following variables:
1046
1047_GCC_CRTBEGIN	The full path name to crtbegin.o.
1048
1049_GCC_CRTBEGINS	The full path name to crtbeginS.o.
1050
1051_GCC_CRTEND	The full path name to crtend.o.
1052
1053_GCC_CRTENDS	The full path name to crtendS.o.
1054
1055_GCC_LIBGCCDIR	The directory where libgcc.a is located.
1056
1057
1058=-=-=-=-=   bsd.inc.mk   =-=-=-=-=
1059
1060The include file <bsd.inc.mk> defines the includes target and uses the
1061variables:
1062
1063INCS		The list of include files.
1064
1065INCSDIR		The location to install the include files.
1066
1067INCSNAME	Target name of the include file, if only one; same as
1068		FILESNAME, but for include files.
1069
1070INCSYMLINKS	Similar to SYMLINKS in <bsd.links.mk>, except that these
1071		are installed in the 'includes' target and not the
1072		(much later) 'install' target.
1073
1074INCSNAME_<file>	The name file <file> should be installed as, if not <file>,
1075		same as FILESNAME_<file>, but for include files.
1076
1077
1078=-=-=-=-=   bsd.info.mk   =-=-=-=-=
1079
1080The include file <bsd.info.mk> is used to generate and install GNU Info
1081documentation from respective Texinfo source files.  It defines three
1082implicit targets (.txi.info, .texi.info, and .texinfo.info), and uses the
1083following variables:
1084
1085TEXINFO		List of Texinfo source files.  Info documentation will
1086		consist of single files with the extension replaced by
1087		.info.
1088
1089INFOFLAGS	Flags to pass to makeinfo.  []
1090
1091
1092=-=-=-=-=   bsd.kernobj.mk   =-=-=-=-=
1093
1094The include file <bsd.kernobj.mk> defines variables related to the
1095location of kernel sources and object directories.
1096
1097KERNSRCDIR	Is the location of the top of the kernel src.
1098		[${_SRC_TOP_}/sys]
1099
1100KERNARCHDIR	Is the location of the machine dependent kernel sources.
1101		[arch/${MACHINE}]
1102
1103KERNCONFDIR	Is where the configuration files for kernels are found.
1104		[${KERNSRCDIR}/${KERNARCHDIR}/conf]
1105
1106KERNOBJDIR	Is the kernel build directory.  The kernel GENERIC for
1107		instance will be compiled in ${KERNOBJDIR}/GENERIC.
1108		The default value is
1109		${MAKEOBJDIRPREFIX}${KERNSRCDIR}/${KERNARCHDIR}/compile
1110		if it exists or the target 'obj' is being made.
1111		Otherwise the default is
1112		${KERNSRCDIR}/${KERNARCHDIR}/compile.
1113
1114It is important that Makefiles (such as those under src/distrib) that
1115wish to find compiled kernels use <bsd.kernobj.mk> and ${KERNOBJDIR}
1116rather than make assumptions about the location of the compiled kernel.
1117
1118
1119=-=-=-=-=   bsd.kinc.mk   =-=-=-=-=
1120
1121The include file <bsd.kinc.mk> defines the many targets (includes,
1122subdirectories, etc.), and is used by kernel makefiles to handle
1123include file installation.  It is intended to be included alone, by
1124kernel Makefiles.  It uses similar variables to <bsd.inc.mk>.
1125Please see <bsd.kinc.mk> for more details, and keep the documentation
1126in that file up to date.
1127
1128=-=-=-=-=   bsd.syscall.mk =-=-=-=-=
1129
1130The include file <bsd.syscall.mk> contains the logic to create syscall
1131files for various emulations. It includes <bsd.kinc.mk> to handle the
1132rest of the targets.
1133
1134=-=-=-=-=   bsd.lib.mk   =-=-=-=-=
1135
1136The include file <bsd.lib.mk> has support for building libraries.  It has
1137the same eight targets as <bsd.prog.mk>: all, clean, cleandir, depend,
1138includes, install, lint, and tags.  Additionally, it has a checkver target
1139which checks for installed shared object libraries whose version is greater
1140that the version of the source. It has a limited number of suffixes,
1141consistent with the current needs of the BSD tree.  <bsd.lib.mk> includes
1142<bsd.shlib.mk> to get shared library parameters.
1143
1144It sets/uses the following variables:
1145
1146LIB		The name of the library to build.
1147
1148LIBDIR		Target directory for libraries.
1149
1150MKARZERO	Normally, ar(1) sets the timestamps, uid, gid and
1151		permissions in files inside its archives to those of
1152		the file it was fed. This leads to non-reproduceable
1153		builds. If MKARZERO is set to "yes" (default is the
1154		same as MKREPRO, or "no" if MKREPRO is not defined),
1155		then the "D" flag is passed to ar, causing the
1156		timestamp, uid and gid to be zeroed and the file
1157		permissions to be set to 644. This allows .a files
1158		from different builds to be bit identical.
1159
1160SHLIBINSTALLDIR	Target directory for shared libraries if ${USE_SHLIBDIR}
1161		is not "no".
1162
1163SHLIB_MAJOR
1164SHLIB_MINOR
1165SHLIB_TEENY	Major, minor, and teeny version numbers of shared library
1166
1167USE_SHLIBDIR	If not "no", use ${SHLIBINSTALLDIR} instead of ${LIBDIR}
1168		as the path to install shared libraries to.
1169		USE_SHLIBDIR must be defined before <bsd.own.mk> is included.
1170		Default: no
1171
1172LIBISMODULE	If not "no", install as ${LIB}.so (without the "lib" prefix),
1173		and act as "MKDEBUGLIB=no MKLINT=no MKPICINSTALL=no
1174		MKPROFILE=no MKSTATICLIB=no".
1175		Default: no
1176
1177LIBISPRIVATE	If not "no", act as "MKDEBUGLIB=no MKLINT=no MKPIC=no
1178		MKPROFILE=no", and don't install the (.a) library.
1179		This is useful for "build only" helper libraries.
1180		Default: no
1181
1182LIBISCXX	If not "no", Use ${CXX} instead of ${CC} to link
1183		shared libraries.
1184		This is useful for C++ libraries.
1185		Default: no
1186
1187LINTLIBDIR	Target directory for lint libraries.
1188
1189LIBGRP		Library group.
1190
1191LIBOWN		Library owner.
1192
1193LIBMODE		Library mode.
1194
1195LDADD		Additional loader objects.
1196
1197MAN		The manual pages to be installed (use a .1 - .9 suffix).
1198
1199NOCHECKVER_<library>
1200NOCHECKVER	If set, disables checking for installed shared object
1201		libraries with versions greater than the source.  A
1202		particular library name, without the "lib" prefix, may
1203		be appended to the variable name to disable the check for
1204		only that library.
1205
1206SRCS		List of source files to build the library.  Suffix types
1207		.s, .c, and .f are supported.  Note, .s files are preferred
1208		to .c files of the same name.  (This is not the default for
1209		versions of make.)
1210
1211LIBDPLIBS	A list of the tuples:
1212			libname  path-to-srcdir-of-libname
1213
1214		For each tuple;
1215		     *	LIBDO.libname contains the .OBJDIR of the library
1216			`libname', and if it is not set it is determined
1217			from the srcdir and added to MAKEOVERRIDES (the
1218			latter is to allow for build time optimization).
1219		     *	LDADD gets  -L${LIBDO.libname} -llibname    added.
1220		     *	DPADD gets  ${LIBDO.libname}/liblibname.so  or
1221				    ${LIBDO.libname}/liblibname.a   added.
1222
1223		The special value "_external" for LIBDO.lib makes the
1224		build system to assume the library comes from outside
1225		of the NetBSD source tree and only causes -llibname
1226		to be added to LDADD.
1227
1228		This variable may be used for individual libraries, as
1229		well as in parent directories to cache common libraries
1230		as a build-time optimization.
1231
1232The include file <bsd.lib.mk> includes the file named "../Makefile.inc"
1233if it exists, as well as the include file <bsd.man.mk>.
1234
1235It has rules for building profiled objects; profiled libraries are
1236built by default.
1237
1238Libraries are ranlib'd when made.
1239
1240
1241=-=-=-=-=   bsd.links.mk   =-=-=-=-=
1242
1243The include file <bsd.links.mk> handles the LINKS and SYMLINKS variables
1244and is included from from <bsd.lib.mk> and <bsd.prog.mk>.
1245
1246LINKSOWN, LINKSGRP, and LINKSMODE, are relevant only if a metadata log
1247is used. The defaults may be modified by other bsd.*.mk files which
1248include bsd.links.mk.  In the future, these variables may be replaced
1249by a method for explicitly recording hard links in a metadata log.
1250
1251LINKS		The list of hard links, consisting of pairs of paths:
1252			source-file target-file
1253		${DESTDIR} is prepended to both paths before linking.
1254		For example, to link /bin/test and /bin/[, use:
1255			LINKS=/bin/test /bin/[
1256
1257CONFIGLINKS	Similar semantics to LINKS, except that the links
1258		are installed by the `configinstall' target,
1259		not the `install' target.
1260
1261SYMLINKS	The list of symbolic links, consisting of pairs of paths:
1262			source-file target-file
1263		${DESTDIR} is only prepended to target-file before linking.
1264		For example, to symlink /usr/bin/tar to /bin/tar resulting
1265		in ${DESTDIR}/usr/bin/tar -> /bin/tar:
1266			SYMLINKS=/bin/tar /usr/bin/tar
1267
1268CONFIGSYMLINKS	Similar semantics to SYMLINKS, except that the symbolic links
1269		are installed by the `configinstall' target,
1270		not the `install' target.
1271
1272LINKSOWN	Link owner.  [${BINOWN}]
1273
1274LINKSGRP	Link group.  [${BINGRP}]
1275
1276LINKSMODE	Link mode.  [${NONBINMODE}]
1277
1278LINKSOWN_<fn>	Link owner of the specific file <fn>.
1279
1280LINKSGRP_<fn>	Link group of the specific file <fn>.
1281
1282LINKSMODE_<fn>	Link mode of the specific file <fn>.
1283
1284
1285=-=-=-=-=   bsd.man.mk   =-=-=-=-=
1286
1287The include file <bsd.man.mk> handles installing manual pages and their
1288links.
1289
1290It has a three targets:
1291
1292	catinstall:
1293		Install the preformatted manual pages and their links.
1294	htmlinstall:
1295		Install the HTML manual pages and their links.
1296	maninstall:
1297		Install the manual page sources and their links.
1298
1299It sets/uses the following variables:
1300
1301MANDIR		Base path for manual installation.
1302
1303MANGRP		Manual group.
1304
1305MANOWN		Manual owner.
1306
1307MANMODE		Manual mode.
1308
1309MANSUBDIR	Subdirectory under the manual page section, i.e. "/vax"
1310		or "/tahoe" for machine specific manual pages.
1311
1312MAN		The manual pages to be installed (use a .1 - .9 suffix).
1313
1314MLINKS		List of manual page links (using a .1 - .9 suffix).  The
1315		linked-to file must come first, the linked file second,
1316		and there may be multiple pairs.
1317
1318The include file <bsd.man.mk> includes a file named "../Makefile.inc" if
1319it exists.
1320
1321
1322=-=-=-=-=   bsd.obj.mk   =-=-=-=-=
1323
1324The include file <bsd.obj.mk> defines targets related to the creation
1325and use of separated object and source directories.
1326
1327If an environment variable named MAKEOBJDIRPREFIX is set, make(1) uses
1328${MAKEOBJDIRPREFIX}${.CURDIR} as the name of the object directory if
1329it exists.  Otherwise make(1) looks for the existence of a
1330subdirectory (or a symlink to a directory) of the source directory
1331into which built targets should be placed.  If an environment variable
1332named MAKEOBJDIR is set, make(1) uses its value as the name of the
1333object directory; failing that, make first looks for a subdirectory
1334named "obj.${MACHINE}", and if that doesn't exist, it looks for "obj".
1335
1336Object directories are not created automatically by make(1) if they
1337don't exist; you need to run a separate "make obj".  (This will happen
1338during a top-level build if "MKOBJDIRS" is set to a value other than
1339"no").  When the source directory is a subdirectory of ${BSDSRCDIR} --
1340and this is determined by a simple string prefix comparison -- object
1341directories are created in a separate object directory tree, and a
1342symlink to the object directory in that tree is created in the source
1343directory; otherwise, "make obj" assumes that you're not in the main
1344source tree and that it's not safe to use a separate object tree.
1345
1346Several variables used by <bsd.obj.mk> control exactly what
1347directories and links get created during a "make obj":
1348
1349MAKEOBJDIR	If set, this is the component name of the object
1350		directory.
1351
1352OBJMACHINE	If this is set but MAKEOBJDIR is not set, creates
1353		object directories or links named "obj.${MACHINE}";
1354		otherwise, just creates ones named "obj".
1355
1356USR_OBJMACHINE  If set, and the current directory is a subdirectory of
1357		${BSDSRCDIR}, create object directory in the
1358		corresponding subdirectory of ${BSDOBJDIR}.${MACHINE};
1359		otherwise, create it in the corresponding subdirectory
1360		of ${BSDOBJDIR}
1361
1362BUILDID		If set, the contents of this variable are appended
1363		to the object directory name.  If OBJMACHINE is also
1364		set, ".${BUILDID}" is added after ".${MACHINE}".
1365
1366
1367=-=-=-=-=   bsd.prog.mk   =-=-=-=-=
1368
1369The include file <bsd.prog.mk> handles building programs from one or
1370more source files, along with their manual pages.  It has a limited number
1371of suffixes, consistent with the current needs of the BSD tree.
1372<bsd.prog.mk> includes <bsd.shlib.mk> to get shared library parameters.
1373
1374It has eight targets:
1375
1376	all:
1377		build the program and its manual page.  This also
1378		creates a GDB initialization file (.gdbinit) in
1379		the objdir.  The .gdbinit file sets the shared library
1380		prefix to ${DESTDIR} to facilitate cross-debugging.
1381	clean:
1382		remove the program, any object files and the files a.out,
1383		Errs, errs, mklog, and ${PROG}.core.
1384	cleandir:
1385		remove all of the files removed by the target clean, as
1386		well as .depend, tags, and any manual pages.
1387		`distclean' is a synonym for `cleandir'.
1388	depend:
1389		make the dependencies for the source files, and store
1390		them in the file .depend.
1391	includes:
1392		install any header files.
1393	install:
1394		install the program and its manual pages; if the Makefile
1395		does not itself define the target install, the targets
1396		beforeinstall and afterinstall may also be used to cause
1397		actions immediately before and after the install target
1398		is executed.
1399	lint:
1400		run lint on the source files
1401	tags:
1402		create a tags file for the source files.
1403
1404It sets/uses the following variables:
1405
1406BINGRP		Binary group.
1407
1408BINOWN		Binary owner.
1409
1410BINMODE		Binary mode.
1411
1412CLEANDIRFILES	Additional files to remove for the cleandir target.
1413
1414CLEANFILES	Additional files to remove for the clean and cleandir targets.
1415
1416COPTS		Additional flags to the compiler when creating C objects.
1417
1418COPTS.<fn>	Additional flags to the compiler when creating the
1419		C objects for <fn>.
1420		For <fn>.[ly], "<fn>.c" must be used.
1421
1422CPUFLAGS	Additional flags to the compiler/assembler to select
1423		CPU instruction set options, CPU tuning options, etc.
1424
1425CPUFLAGS.<fn>	Additional flags to the compiler/assembler for <fn>.
1426		For <fn>.[ly], "<fn>.c" must be used.
1427
1428CPPFLAGS	Additional flags to the C pre-processor.
1429
1430CPPFLAGS.<fn>	Additional flags to the C pre-processor for <fn>.
1431		For <fn>.[ly], "<fn>.c" must be used.
1432
1433GDBINIT		List of GDB initialization files to add to "source"
1434		directives in the .gdbinit file that is created in the
1435		objdir.
1436
1437LDADD		Additional loader objects.  Usually used for libraries.
1438		For example, to load with the compatibility and utility
1439		libraries, use:
1440
1441			LDADD+=-lutil -lcompat
1442
1443LDFLAGS		Additional linker flags (passed to ${CC} during link).
1444
1445LINKS		See <bsd.links.mk>
1446
1447OBJCOPTS	Additional flags to the compiler when creating ObjC objects.
1448
1449OBJCOPTS.<fn>	Additional flags to the compiler when creating the
1450		ObjC objects for <fn>.
1451		For <fn>.[ly], "<fn>.c" must be used.
1452
1453SYMLINKS	See <bsd.links.mk>
1454
1455MAN		Manual pages (should end in .1 - .9).  If no MAN variable is
1456		defined, "MAN=${PROG}.1" is assumed.
1457
1458PAXCTL_FLAGS	If defined, run paxctl(1) on the program binary after link
1459		time, with the value of this variable as args to paxctl(1).
1460
1461PAXCTL_FLAGS.${PROG} Custom override for PAXCTL_FLAGS.
1462
1463PROG		The name of the program to build.  If not supplied, nothing
1464		is built.
1465
1466PROG_CXX	If defined, the name of the program to build.  Also
1467		causes <bsd.prog.mk> to link the program with the C++
1468		compiler rather than the C compiler.  PROG_CXX overrides
1469		the value of PROG if PROG is also set.
1470
1471PROGNAME	The name that the above program will be installed as, if
1472		different from ${PROG}.
1473
1474SRCS		List of source files to build the program.  If SRCS is not
1475		defined, it's assumed to be ${PROG}.c.
1476
1477DPSRCS		List of source files which are needed for generating
1478		dependencies, but are not needed in ${SRCS}.
1479
1480DPADD		Additional dependencies for the program.  Usually used for
1481		libraries.  For example, to depend on the compatibility and
1482		utility libraries use:
1483
1484			DPADD+=${LIBCOMPAT} ${LIBUTIL}
1485
1486		The following system libraries are predefined for DPADD:
1487
1488		LIBARCHIVE?=	${DESTDIR}/usr/lib/libarchive.a
1489		LIBASN1?=	${DESTDIR}/usr/lib/libasn1.a
1490		LIBATF_C?=	${DESTDIR}/usr/lib/libatf-c.a
1491		LIBATF_CXX?=	${DESTDIR}/usr/lib/libatf-c++.a
1492		LIBBIND9?=	${DESTDIR}/usr/lib/libbind9.a
1493		LIBBLUETOOTH?=	${DESTDIR}/usr/lib/libbluetooth.a
1494		LIBBSDMALLOC?=	${DESTDIR}/usr/lib/libbsdmalloc.a
1495		LIBBZ2?=	${DESTDIR}/usr/lib/libbz2.a
1496		LIBC?=		${DESTDIR}/usr/lib/libc.a
1497		LIBCOMPAT?=	${DESTDIR}/usr/lib/libcompat.a
1498		LIBCOM_ERR?=	${DESTDIR}/usr/lib/libcom_err.a
1499		LIBCRT0?=	${DESTDIR}/usr/lib/crt0.o
1500		LIBCRTI?=	${DESTDIR}/usr/lib/crti.o
1501		LIBCRYPT?=	${DESTDIR}/usr/lib/libcrypt.a
1502		LIBCRYPTO?=	${DESTDIR}/usr/lib/libcrypto.a
1503		LIBCRYPTO_IDEA?=${DESTDIR}/usr/lib/libcrypto_idea.a
1504		LIBCRYPTO_MDC2?=${DESTDIR}/usr/lib/libcrypto_mdc2.a
1505		LIBCRYPTO_RC5?=	${DESTDIR}/usr/lib/libcrypto_rc5.a
1506		LIBCURSES?=	${DESTDIR}/usr/lib/libcurses.a
1507		LIBC_PIC?=	${DESTDIR}/usr/lib/libc_pic.a
1508		LIBDBM?=	${DESTDIR}/usr/lib/libdbm.a
1509		LIBDES?=	${DESTDIR}/usr/lib/libdes.a
1510		LIBDNS?=	${DESTDIR}/usr/lib/libdns.a
1511		LIBEDIT?=	${DESTDIR}/usr/lib/libedit.a
1512		LIBEVENT?=	${DESTDIR}/usr/lib/libevent.a
1513		LIBEVENT_OPENSSL?=	${DESTDIR}/usr/lib/libevent_openssl.a
1514		LIBEVENT_PTHREADS?=	${DESTDIR}/usr/lib/libevent_pthreads.a
1515		LIBEXPAT?=	${DESTDIR}/usr/lib/libexpat.a
1516		LIBFETCH?=	${DESTDIR}/usr/lib/libfetch.a
1517		LIBFORM?=	${DESTDIR}/usr/lib/libform.a
1518		LIBFL?=		${DESTDIR}/usr/lib/libfl.a
1519		LIBG2C?=	${DESTDIR}/usr/lib/libg2c.a
1520		LIBGCC?=	${DESTDIR}/usr/lib/libgcc.a
1521		LIBGNUMALLOC?=	${DESTDIR}/usr/lib/libgnumalloc.a
1522		LIBGSSAPI?=	${DESTDIR}/usr/lib/libgssapi.a
1523		LIBHDB?=	${DESTDIR}/usr/lib/libhdb.a
1524		LIBHEIMBASE?=	${DESTDIR}/usr/lib/libheimbase.a
1525		LIBHEIMNTLM?=	${DESTDIR}/usr/lib/libheimntlm.a
1526		LIBHX500?=	${DESTDIR}/usr/lib/libhx500.a
1527		LIBINTL?=	${DESTDIR}/usr/lib/libintl.a
1528		LIBIPSEC?=	${DESTDIR}/usr/lib/libipsec.a
1529		LIBISC?=	${DESTDIR}/usr/lib/libisc.a
1530		LIBISCCC?=	${DESTDIR}/usr/lib/libisccc.a
1531		LIBISCFG?=	${DESTDIR}/usr/lib/libiscfg.a
1532		LIBKADM5CLNT?=	${DESTDIR}/usr/lib/libkadm5clnt.a
1533		LIBKADM5SRV?=	${DESTDIR}/usr/lib/libkadm5srv.a
1534		LIBKAFS?=	${DESTDIR}/usr/lib/libkafs.a
1535		LIBKRB5?=	${DESTDIR}/usr/lib/libkrb5.a
1536		LIBKVM?=	${DESTDIR}/usr/lib/libkvm.a
1537		LIBL?=		${DESTDIR}/usr/lib/libl.a
1538		LIBLBER?=	${DESTDIR}/usr/lib/liblber.a
1539		LIBLDAP?=	${DESTDIR}/usr/lib/libldap.a
1540		LIBLDAP_R?=	${DESTDIR}/usr/lib/libldap_r.a
1541		LIBLUA?=	${DESTDIR}/usr/lib/liblua.a
1542		LIBLUTOK?=	${DESTDIR}/usr/lib/liblutok.a
1543		LIBLWRES?=	${DESTDIR}/usr/lib/liblwres.a
1544		LIBM?=		${DESTDIR}/usr/lib/libm.a
1545		LIBMAGIC?=	${DESTDIR}/usr/lib/libmagic.a
1546		LIBMENU?=	${DESTDIR}/usr/lib/libmenu.a
1547		LIBOBJC?=	${DESTDIR}/usr/lib/libobjc.a
1548		LIBOSSAUDIO?=	${DESTDIR}/usr/lib/libossaudio.a
1549		LIBPAM?=	${DESTDIR}/usr/lib/libpam.a
1550		LIBPCAP?=	${DESTDIR}/usr/lib/libpcap.a
1551		LIBPCI?=	${DESTDIR}/usr/lib/libpci.a
1552		LIBPMC?=	${DESTDIR}/usr/lib/libpmc.a
1553		LIBPOSIX?=	${DESTDIR}/usr/lib/libposix.a
1554		LIBPTHREAD?=	${DESTDIR}/usr/lib/libpthread.a
1555		LIBPTHREAD_DBG?=${DESTDIR}/usr/lib/libpthread_dbg.a
1556		LIBPUFFS?=	${DESTDIR}/usr/lib/libpuffs.a
1557		LIBQUOTA?=	${DESTDIR}/usr/lib/libquota.a
1558		LIBRADIUS?=	${DESTDIR}/usr/lib/libradius.a
1559		LIBRESOLV?=	${DESTDIR}/usr/lib/libresolv.a
1560		LIBRMT?=	${DESTDIR}/usr/lib/librmt.a
1561		LIBROKEN?=	${DESTDIR}/usr/lib/libroken.a
1562		LIBRPCSVC?=	${DESTDIR}/usr/lib/librpcsvc.a
1563		LIBRT?=		${DESTDIR}/usr/lib/librt.a
1564		LIBRUMP?=	${DESTDIR}/usr/lib/librump.a
1565		LIBRUMPFS_CD9660FS?=${DESTDIR}/usr/lib/librumpfs_cd9660fs.a
1566		LIBRUMPFS_EFS?=	${DESTDIR}/usr/lib/librumpfs_efs.a
1567		LIBRUMPFS_EXT2FS?=${DESTDIR}/usr/lib/librumpfs_ext2fs.a
1568		LIBRUMPFS_FFS?=	${DESTDIR}/usr/lib/librumpfs_ffs.a
1569		LIBRUMPFS_HFS?=	${DESTDIR}/usr/lib/librumpfs_hfs.a
1570		LIBRUMPFS_LFS?=	${DESTDIR}/usr/lib/librumpfs_lfs.a
1571		LIBRUMPFS_MSDOSFS?=${DESTDIR}/usr/lib/librumpfs_msdosfs.a
1572		LIBRUMPFS_NFS?=	${DESTDIR}/usr/lib/librumpfs_nfs.a
1573		LIBRUMPFS_NTFS?=${DESTDIR}/usr/lib/librumpfs_ntfs.a
1574		LIBRUMPFS_SYSPUFFS?=${DESTDIR}/usr/lib/librumpfs_syspuffs.a
1575		LIBRUMPFS_TMPFS?=${DESTDIR}/usr/lib/librumpfs_tmpfs.a
1576		LIBRUMPFS_UDF?=	${DESTDIR}/usr/lib/librumpfs_udf.a
1577		LIBRUMPFS_UFS?=	${DESTDIR}/usr/lib/librumpfs_ufs.a
1578		LIBRUMPUSER?=	${DESTDIR}/usr/lib/librumpuser.a
1579		LIBSASLC?=	${DESTDIR}/usr/lib/libsaslc.a
1580		LIBSKEY?=	${DESTDIR}/usr/lib/libskey.a
1581		LIBSL?=		${DESTDIR}/usr/lib/libsl.a
1582		LIBSQLITE3?=	${DESTDIR}/usr/lib/libsqlite3.a
1583		LIBSS?=		${DESTDIR}/usr/lib/libss.a
1584		LIBSSH?=	${DESTDIR}/usr/lib/libssh.a
1585		LIBSSL?=	${DESTDIR}/usr/lib/libssl.a
1586		LIBSSP?=	${DESTDIR}/usr/lib/libssp.a
1587		LIBSTDCXX?=	${DESTDIR}/usr/lib/libstdc++.a
1588		LIBSUPCXX?=	${DESTDIR}/usr/lib/libsupc++.a
1589		LIBTERMINFO?=	${DESTDIR}/usr/lib/libterminfo.a
1590		LIBTRE?=	${DESTDIR}/usr/lib/libtre.a
1591		LIBUSBHID?=	${DESTDIR}/usr/lib/libusbhid.a
1592		LIBUTIL?=	${DESTDIR}/usr/lib/libutil.a
1593		LIBWIND?=	${DESTDIR}/usr/lib/libwind.a
1594		LIBWRAP?=	${DESTDIR}/usr/lib/libwrap.a
1595		LIBY?=		${DESTDIR}/usr/lib/liby.a
1596		LIBZ?=		${DESTDIR}/usr/lib/libz.a
1597
1598		The following X-Windows libraries are predefined for DPADD:
1599
1600		LIBFS?=		${DESTDIR}/usr/X11R7/lib/libFS.a
1601		LIBGL?=		${DESTDIR}/usr/X11R7/lib/libGL.a
1602		LIBGLU?=	${DESTDIR}/usr/X11R7/lib/libGLU.a
1603		LIBICE?=	${DESTDIR}/usr/X11R7/lib/libICE.a
1604		LIBSM?=		${DESTDIR}/usr/X11R7/lib/libSM.a
1605		LIBX11?=	${DESTDIR}/usr/X11R7/lib/libX11.a
1606		LIBX11_XCB?=	${DESTDIR}/usr/X11R7/lib/libX11-xcb.a
1607		LIBXTRAP?=	${DESTDIR}/usr/X11R7/lib/libXTrap.a
1608		LIBXAU?=	${DESTDIR}/usr/X11R7/lib/libXau.a
1609		LIBXAW?=	${DESTDIR}/usr/X11R7/lib/libXaw.a
1610		LIBXCB?=	${DESTDIR}/usr/X11R7/lib/libxcb.a
1611		LIBXDMCP?=	${DESTDIR}/usr/X11R7/lib/libXdmcp.a
1612		LIBXEXT?=	${DESTDIR}/usr/X11R7/lib/libXext.a
1613		LIBXFONT?=	${DESTDIR}/usr/X11R7/lib/libXfont.a
1614		LIBXFT?=	${DESTDIR}/usr/X11R7/lib/libXft.a
1615		LIBXI?=		${DESTDIR}/usr/X11R7/lib/libXi.a
1616		LIBXINERAMA?=	${DESTDIR}/usr/X11R7/lib/libXinerama.a
1617		LIBXMU?=	${DESTDIR}/usr/X11R7/lib/libXmu.a
1618		LIBXMUU?=	${DESTDIR}/usr/X11R7/lib/libXmuu.a
1619		LIBXPM?=	${DESTDIR}/usr/X11R7/lib/libXpm.a
1620		LIBXRANDR?=	${DESTDIR}/usr/X11R7/lib/libXrandr.a
1621		LIBXRENDER?=	${DESTDIR}/usr/X11R7/lib/libXrender.a
1622		LIBXSS?=	${DESTDIR}/usr/X11R7/lib/libXss.a
1623		LIBXT?=		${DESTDIR}/usr/X11R7/lib/libXt.a
1624		LIBXTST?=	${DESTDIR}/usr/X11R7/lib/libXtst.a
1625		LIBXV?=		${DESTDIR}/usr/X11R7/lib/libXv.a
1626		LIBXXF86DGA?=	${DESTDIR}/usr/X11R7/lib/libXxf86dga.a
1627		LIBXXF86MISC?=	${DESTDIR}/usr/X11R7/lib/libXxf86misc.a
1628		LIBXXF86VM?=	${DESTDIR}/usr/X11R7/lib/libXxf86vm.a
1629		LIBDPS?=	${DESTDIR}/usr/X11R7/lib/libdps.a
1630		LIBFNTSTUBS?=	${DESTDIR}/usr/X11R7/lib/libfntstubs.a
1631		LIBFONTCACHE?=	${DESTDIR}/usr/X11R7/lib/libfontcache.a
1632		LIBFONTCONFIG?=	${DESTDIR}/usr/X11R7/lib/libfontconfig.a
1633		LIBFONTENC?=	${DESTDIR}/usr/X11R7/lib/libfontenc.a
1634		LIBFREETYPE?=	${DESTDIR}/usr/X11R7/lib/libfreetype.a
1635		LIBLBXUTIL?=	${DESTDIR}/usr/X11R7/lib/liblbxutil.a
1636		LIBXKBFILE?=	${DESTDIR}/usr/X11R7/lib/libxkbfile.a
1637
1638SHAREDSTRINGS	If defined, a new .c.o rule is used that results in shared
1639		strings, using xstr(1). Note that this will not work with
1640		parallel makes.
1641
1642STRIPFLAG	The flag passed to the install program to cause the binary
1643		to be stripped.
1644
1645SUBDIR		A list of subdirectories that should be built as well.
1646		Each of the targets will execute the same target in the
1647		subdirectories.
1648
1649SCRIPTS		A list of interpreter scripts [file.{sh,csh,pl,awk,...}].
1650		These are installed exactly like programs.
1651
1652SCRIPTSDIR	The location to install the scripts.  Each script can be
1653		installed to a separate path by setting SCRIPTSDIR_<script>.
1654
1655SCRIPTSNAME	The name that the above program will be installed as, if
1656		different from ${SCRIPTS}. These can be further specialized
1657		by setting SCRIPTSNAME_<script>.
1658
1659FILES		See description of <bsd.files.mk>.
1660
1661SHLINKDIR	Target directory for shared linker.  See description of
1662		<bsd.own.mk> for additional information about this variable.
1663
1664The include file <bsd.prog.mk> includes the file named "../Makefile.inc"
1665if it exists, as well as the include file <bsd.man.mk>.
1666
1667Some simple examples:
1668
1669To build foo from foo.c with a manual page foo.1, use:
1670
1671	PROG=	foo
1672
1673	.include <bsd.prog.mk>
1674
1675To build foo from foo.c with a manual page foo.2, add the line:
1676
1677	MAN=	foo.2
1678
1679If foo does not have a manual page at all, add the line:
1680
1681	MKMAN=	no
1682
1683If foo has multiple source files, add the line:
1684
1685	SRCS=	a.c b.c c.c d.c
1686
1687
1688=-=-=-=-=   bsd.rpc.mk   =-=-=-=-=
1689
1690The include file <bsd.rpc.mk> contains a makefile fragment used to
1691construct source files built by rpcgen.
1692
1693The following macros may be defined in makefiles which include
1694<bsd.rpc.mk> in order to control which files get built and how they
1695are to be built:
1696
1697RPC_INCS:	construct .h file from .x file
1698RPC_XDRFILES:	construct _xdr.c from .x file
1699		(for marshalling/unmarshalling data types)
1700RPC_SVCFILES:	construct _svc.c from .x file
1701		(server-side stubs)
1702RPC_SVCFLAGS:	Additional flags passed to builds of RPC_SVCFILES.
1703
1704RPC_XDIR:	Directory containing .x/.h files
1705
1706
1707=-=-=-=-=   bsd.shlib.mk   =-=-=-=-=
1708
1709The include file <bsd.shlib.mk> computes parameters for shared library
1710installation and use.  It defines no targets.  <bsd.own.mk> MUST be
1711included before <bsd.shlib.mk>.
1712
1713<bsd.own.mk> sets the following variables, if they are not already defined
1714(defaults are in brackets):
1715
1716SHLIBINSTALLDIR	If ${USE_SHLIBDIR} is not "no", use ${SHLIBINSTALLDIR}
1717		instead of ${LIBDIR} as the base path for shared library
1718		installation.  [/lib]
1719
1720SHLIBDIR	The path to USE_SHLIBDIR shared libraries to use when building
1721		a program.  [/lib for programs in /bin and /sbin, /usr/lib
1722		for all others.]
1723
1724_LIBSODIR	Set to ${SHLIBINSTALLDIR} if ${USE_SHLIBDIR} is not "no",
1725		otherwise set to ${LIBDIR}
1726
1727SHLINKINSTALLDIR Base path for shared linker.  [/libexec]
1728
1729SHLINKDIR	Path to use for shared linker when building a program.
1730		[/libexec for programs in /bin and /sbin, /usr/libexec for
1731		all others.]
1732
1733
1734=-=-=-=-=   bsd.subdir.mk   =-=-=-=-=
1735
1736The include file <bsd.subdir.mk> contains the default targets for building
1737subdirectories.  It has the same eight targets as <bsd.prog.mk>: all,
1738clean, cleandir, depend, includes, install, lint, and tags.  It uses the
1739following variables:
1740
1741NOSUBDIR	If this variable is defined, then the SUBDIR variable
1742		will be ignored and subdirectories will not be processed.
1743
1744SUBDIR		For all of the directories listed in ${SUBDIR}, the
1745		specified directory will be visited and the target made.
1746
1747		As a special case, the use of a token .WAIT as an
1748		entry in SUBDIR acts as a synchronization barrier
1749		when multiple make jobs are run; subdirs before the
1750		.WAIT must complete before any subdirs after .WAIT are
1751		started.  See make(1) for some caveats on use of .WAIT
1752		and other special sources.
1753
1754
1755=-=-=-=-=   bsd.x11.mk   =-=-=-=-=
1756
1757The include file <bsd.x11.mk> contains parameters and targets for
1758cross-building X11 from ${X11SRCDIR.xc} / ${X11MITSRCDIR.*}.
1759It should be included after the general Makefile contents but before
1760the include files such as <bsd.prog.mk> and <bsd.lib.mk>.
1761
1762It provides the following targets:
1763	.man.1 .man.3 .man.4 .man.5 .man.7:
1764		If ${MAN} or ${PROG} is set and ${MKMAN} != "no",
1765		these rules convert from X11's manual page source
1766		into an mdoc.old source file.
1767
1768It sets the following variables:
1769
1770BINDIR			Set to ${X11BINDIR}.
1771			To override, define after including <bsd.x11.mk>
1772
1773LIBDIR			Set to ${X11USRLIBDIR}.
1774			To override, define after including <bsd.x11.mk>
1775
1776MANDIR			Set to ${X11MANDIR}.
1777			To override, define after including <bsd.x11.mk>
1778
1779CPPFLAGS		Appended with definitions to include from
1780			${DESTDIR}${X11INCDIR}
1781
1782LDFLAGS			Appended with definitions to link from
1783			${DESTDIR}${X11USRLIBDIR}
1784
1785X11FLAGS.CONNECTION	Equivalent to X11's CONNECTION_FLAGS.
1786
1787X11FLAGS.EXTENSION	Equivalent to X11's EXT_DEFINES.
1788
1789X11FLAGS.LOADABLE	Equivalent to X11's LOADABLE.
1790
1791X11FLAGS.OS_DEFINES	Equivalent to X11's OS_DEFINES.
1792
1793X11FLAGS.SERVER		Equivalent to X11's ServerDefines.
1794
1795X11FLAGS.THREADLIB	Equivalent to X11's THREADS_DEFINES for libraries.
1796
1797X11FLAGS.THREADS	Equivalent to X11's THREADS_DEFINES.
1798
1799X11FLAGS.VERSION	cpp(1) definitions of OSMAJORVERSION and OSMINORVERSION.
1800
1801X11FLAGS.DIX		Equivalent to X11's DIX_DEFINES.
1802
1803X11TOOL_UNXCOMM		Commandline to convert `XCOMM' comments to `#'
1804
1805It uses the following variables:
1806
1807APPDEFS			List of app-default files to install.
1808
1809CPPSCRIPTS		List of files/scripts to run through cpp(1)
1810			and then ${X11TOOL_UNXCOMM}.  The source files
1811			have a `.cpp' suffix, the generated files do not.
1812
1813CPPSCRIPTFLAGS		Additional flags to cpp(1) when building CPPSCRIPTS.
1814
1815CPPSCRIPTFLAGS_<fn>	Additional flags to cpp(1) when building CPPSCRIPT <fn>.
1816
1817
1818=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
1819
1820The following files are described here for completion, but they are not
1821supposed to be included directly from other Makefiles; they are used
1822internally by other system files.
1823
1824=-=-=-=-=   bsd.sys.mk   =-=-=-=-=
1825
1826The include file <bsd.sys.mk> is used by other system mk files and
1827it is not intended to be included standalone. It contains rules and
1828system build variables. It requires bsd.own.mk to be included first.
1829It contains overrides that are used when building the NetBSD source tree.
1830
1831The following variables control how various files are compiled/built.
1832(Note that these may be overridden in <bsd.own.mk> if USETOOLS == "yes"):
1833
1834AR		Create, modify, and extract from archives.  [ar]
1835
1836ARFLAGS		Options to ${AR}.  [rl]
1837
1838AS		Assembler.  [as]
1839
1840AFLAGS		Options to ${CC} when compiling or linking .s or .S
1841		assembly source files.  []
1842
1843BUILDSEED	GCC uses random numbers when compiling C++ code.
1844		If this option is present, seed the random number
1845		generator based on the value, source file names and
1846		the output file name to make builds more deterministic.
1847		Additional information is available in the GCC
1848		documentation of -frandom-seed.
1849
1850CC		C compiler.  [cc]
1851
1852CFLAGS		Options to ${CC}.  [Usually -O or -O2]
1853
1854CPP		C Pre-Processor.  [cpp]
1855
1856CPPFLAGS	Options to ${CPP}.  []
1857
1858CPUFLAGS	Optimization flags for ${CC}.  []
1859
1860CXX		C++ compiler.  [c++]
1861
1862CXXFLAGS	Options to ${CXX}.  [${CFLAGS}]
1863
1864ELF2ECOFF	Convert ELF-format executable to ECOFF.  [elf2ecoff]
1865
1866FC		Fortran compiler.  [f77]
1867
1868FFLAGS		Options to {$FC}.  [-O]
1869
1870HOST_SH		Shell.	This must be an absolute path, because it may be
1871		substituted into "#!" lines in scripts.	 [/bin/sh]
1872
1873INSTALL		install(1) command.  [install]
1874
1875LEX		Lexical analyzer.  [lex]
1876
1877LFLAGS		Options to ${LEX}.  []
1878
1879LPREFIX		Symbol prefix for ${LEX} (see -P option in lex(1)) [yy]
1880
1881LD		Linker.  [ld]
1882
1883LDFLAGS		Options to ${CC} during the link process.  []
1884
1885LINT		C program verifier.  [lint]
1886
1887LINTFLAGS	Options to ${LINT}.  [-chapbxzFS]
1888
1889LORDER		List dependencies for object files.  [lorder]
1890
1891MAKE		make(1).  [make]
1892
1893MKDEP		Construct Makefile dependency list.  [mkdep]
1894
1895MKDEPCXX	Construct Makefile dependency list for C++ files.  [mkdep]
1896
1897NM		List symbols from object files.  [nm]
1898
1899PC		Pascal compiler.  [pc]  (Not present)
1900
1901PFLAGS		Options to ${PC}.  []
1902
1903OBJC		Objective C compiler.  [${CC}]
1904
1905OBJCFLAGS	Options to ${OBJC}.  [${CFLAGS}]
1906
1907OBJCOPY		Copy and translate object files.  [objcopy]
1908
1909OBJCOPYLIBFLAGS	Flags to pass to objcopy when library objects are
1910		being built. [${.TARGET} =~ "*.po" ? -X : -x]
1911
1912OBJDUMP		Display information from object files.  [objdump]
1913
1914RANLIB		Generate index to archive.  [ranlib]
1915
1916SIZE		List section sizes and total size.  [size]
1917
1918STRIP		Discard symbols from object files.  [strip]
1919
1920TSORT		Topological sort of a directed graph.  [tsort -q]
1921
1922YACC		LALR(1) parser generator.  [yacc]
1923
1924YFLAGS		Options to ${YACC}.  []
1925
1926YHEADER		If defined, add "-d" to YFLAGS, and add dependencies
1927		from <file>.y to <file>.h and <file>.c, and add
1928		<foo>.h to CLEANFILES.
1929
1930YPREFIX		If defined, add "-p ${YPREFIX}" to YFLAGS.
1931
1932
1933Other variables of note (incomplete list):
1934
1935NOGCCERROR	If defined, prevents passing certain ${CFLAGS} to GCC
1936		that cause warnings to be fatal, such as:
1937			-Werror -Wa,--fatal-warnings
1938		(The latter being for as(1).)
1939
1940NOCLANGERROR	If defined and clang is used as C compiler, -Werror is not
1941		passed to it.
1942
1943WARNS		Crank up compiler warning options; the distinct levels are:
1944			WARNS=1
1945			WARNS=2
1946			WARNS=3
1947			WARNS=4
1948			WARNS=5
1949
1950=-=-=-=-=   bsd.host.mk  =-=-=-=-=
1951
1952This file is automatically included from bsd.own.mk. It contains settings
1953for all the HOST_* variables that are used in host programs and libraries.
1954
1955HOST_AR			The host archive processing command
1956
1957HOST_CC			The host c compiler
1958
1959HOST_CFLAGS		The host c compiler flags
1960
1961HOST_COMPILE.c		The host c compiler line with flags
1962
1963HOST_COMPILE.cc		The host c++ compiler line with flags
1964
1965HOST_CPP		The host c pre-processor
1966
1967HOST_CPPFLAGS		The cost c pre-processor flags
1968
1969HOST_CXX		The host c++ compiler
1970
1971HOST_CXXFLAGS		The host c++ compiler flags
1972
1973HOST_INSTALL_DIR	The host command to install a directory
1974
1975HOST_INSTALL_FILE	The host command to install a file
1976
1977HOST_INSTALL_SYMLINK	The host command to install a symlink
1978
1979HOST_LD			The host linker command
1980
1981HOST_LDFLAGS		The host linker flags
1982
1983HOST_LINK.c		The host c linker line with flags
1984
1985HOST_LINK.cc		The host c++ linker line with flags
1986
1987HOST_LN			The host command to link two files
1988
1989HOST_MKDEP		The host command to create dependencies for c programs
1990
1991HOST_MKDEPCXX		The host command to create dependencies for c++ programs
1992
1993HOST_OSTYPE		The host OSNAME-RELEASE-ARCH tupple
1994
1995HOST_RANLIB		The host command to create random access archives
1996
1997HOST_SH			The host Bourne shell interpreter name (absolute path)
1998
1999=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
2000