xref: /netbsd-src/share/mk/bsd.README (revision 288bb96063654ec504ca8732afc683d3ebc514b5)
1#	$NetBSD: bsd.README,v 1.284 2011/06/30 18:13:51 matt 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 libatf-c, libatf-c++ libraries associated
117		with the Automated Testing Framework (ATF).
118		Default: yes
119
120MKBFD		Obsolete, use MKBINUTILS
121
122MKBINUTILS	If "no", don't build binutils (gas, ld, etc and libbfd,
123		libopcodes)
124		Default: yes
125
126MKBSDTAR	If "yes", use the libarchive based cpio and tar instead of
127		the pax frontends.
128		Default: no
129
130MKCATPAGES	If "no", don't build or install the catman pages.
131		Default: yes
132
133MKCOMPAT  	If "no", don't build or install the src/compat.
134		Default: yes on amd64/sparc64, no elsewhere.
135
136MKCOMPLEX	If "no", don't build libm support for <complex.h>
137		Default: yes
138
139MKCRYPTO	If "no", no cryptography support will be built into the system,
140		and also acts as "MKKERBEROS=no".
141		Default: yes
142
143MKCRYPTO_IDEA	If not "no", IDEA support will be built into libcrypto_idea.a.
144		Default: no
145
146MKCRYPTO_MDC2	If not "no", MDC2 support will be built into libcrypto_mdc2.a
147		Default: no
148
149MKCRYPTO_RC5	If not "no", RC5 support will be built into libcrypto_rc5.a.
150		Default: no
151
152MKCVS		If "no", don't build or install cvs(1).
153		Default: yes
154
155MKDEBUG		If "no", don't build and install separate debugging symbols
156		into /usr/libdata/debug.
157		Default: no
158
159MKDEBUGLIB	Build *_g.a debugging libraries, which are compiled
160		with -DDEBUG.
161		Default: no
162
163MKDOC		If "no", don't build or install the documentation.
164		Default: yes
165
166MKDYNAMICROOT	If "no", build programs in /bin and /sbin statically,
167		don't install certain libraries in /lib, and don't
168		install the shared linker into /libexec.
169		Default: yes
170
171MKEXTSRC        If not "no", 'make build' also descends into either src/extsrc
172		to cross-build programs and libraries externally added by
173		users, and automatically enables creation of those sets.
174		Default: no
175
176MKGCC		If "no", don't build gcc(1) or any of the GCC-related
177		libraries (libgcc, libobjc, libstdc++).
178		Default: yes
179
180MKGCCCMDS	If "no", don't build gcc(1), but do build the GCC-related
181		libraries (libgcc, libobjc, libstdc++).
182		Default: yes
183
184MKGDB		If "no", don't build gdb(1).
185		Default: yes
186
187MKHESIOD	If "no", disables building of Hesiod infrastructure
188		(libraries and support programs).
189		Default: yes
190
191MKHOSTOBJ	If not "no", for programs intended to be run on the compile
192		host, the name, release, and architecture of the host
193		operating system will be suffixed to the name of the object
194		directory created by "make obj".
195		Default: no
196
197MKHTML		If "no", don't build or install the HTML man pages.
198		Default: yes
199
200MKIEEEFP	If "no", don't add code for IEEE754/IEC60559 conformance.
201		Has no effect on most platforms.
202		Default: yes
203
204MKSTRIPIDENT	Strip the RCS IDs from program binaries and shared libraries.
205		Default: no
206
207MKINET6		If "no", disables building of INET6 (IPv6) infrastructure
208		(libraries and support programs).  This option must not be
209		set to "no" if MKX11 is not "no".
210		Default: yes
211
212MKINFO		If "no", don't build or install Info documentation from
213		Texinfo source files.
214		Default: yes
215
216MKIPFILTER	If "no", don't build or install the IP Filter programs and LKM.
217		Default: yes
218
219MKISCSI		If "no", don't build or install iSCSI library or applications
220		(depends on libpthread.)
221		Default: yes
222
223MKKERBEROS	If "no", disables building of Kerberos v5
224		infrastructure (libraries and support programs).
225		Default: yes
226
227MKLDAP		If "no", disables building of LDAP infrastructure
228		(libraries and support programs).
229		Default: yes
230
231MKLINKLIB	If "no", act as "MKLINT=no MKPICINSTALL=no MKPROFILE=no".
232		Also:
233			- don't install the .a libraries
234			- don't install _pic.a libraries on PIC systems
235			- don't build .a libraries on PIC systems
236			- don't install the .so symlink on ELF systems
237		I.e, only install the shared library (and the .so.major
238		symlink on ELF).
239		Default: yes
240
241MKLINT		If "no", don't build or install the lint libraries.
242		Default: yes
243
244MKLVM		If "no", don't build or install the logical volume manager
245		and device mapper tools and libraries
246		Default: yes
247
248MKMAN		If "no", don't build or install the man or catman pages,
249		and also acts as "MKCATPAGES=no MKHTML=no".
250		Default: yes
251
252MKMANDOC	If "yes", mandoc is built as tool and used to compile
253		catman or html pages.  A directory can be exempted by
254		defining NOMANDOC.  Individual man pages are exempted
255		if NOMANDOC.${target} is set to "yes".
256		Default: no
257
258MKMANZ		If not "no", compress manual pages at installation time.
259		Default: no
260
261MKMDNS		If "no", disables building of mDNS infrastructure
262		(libraries and support programs).
263		Default: yes
264
265MKNLS		If "no", don't build or install the NLS files and locale
266		definition files.
267		Default: yes
268
269MKNPF		If "no", don't build or install the NPF and its modules.
270		Default: yes
271
272MKOBJ		If "no", don't enable the rule which creates objdirs,
273		and also acts as "MKOBJDIRS=no".
274		Default: yes
275
276MKOBJDIRS	If "no", don't create objdirs during a "make build".
277		Default: no
278
279MKPAM		If "no", disables building of PAM authentication
280		infrastructure (libraries and support programs).
281		Default: yes
282
283MKPCC		If "no", don't build pcc(1) or any of the PCC-related
284		libraries (libpcc, libpccsoftfloat).
285		Default: no
286
287MKPF		If "no", don't build or install the pf programs and LKM.
288		Default: yes
289
290MKPIC		If "no", don't build or install shared libraries, and
291		also acts as "MKPICLIB=no"
292		Default: yes (for MACHINE_ARCHs that support it)
293
294MKPICINSTALL	If "no", don't install the *_pic.a libraries.
295		Default: yes
296
297MKPICLIB	If "no", don't build *_pic.a libraries, and build the
298		shared object libraries from the .a libraries.
299		A symlink is installed in ${DESTDIR}/usr/lib for the
300		_pic.a library pointing to the .a library.
301		Default: yes
302
303MKPIE		If "no", create regular executables. Otherwise create
304		PIE (Position Independent Executables).
305		Default: no
306
307MKPIGZGZIP	If "no", only install pigz as pigz, not gzip.
308		Default: no
309
310MKPOSTFIX	If "no", don't build or install postfix(1).
311		Default: yes
312
313MKPROFILE	If "no", don't build or install the profiling (*_p.a) libraries.
314		Default: yes
315
316MKSHARE		If "no", act as "MKCATPAGES=no MKDOC=no MKHTML=no MKINFO=no
317		MKMAN=no MKNLS=no".
318		I.e, don't build catman pages, documentation, Info
319		documentation, man pages, NLS files, ...
320		Default: yes
321
322MKSKEY		If "no", disables building of S/key authentication
323		infrastructure (libraries and support programs).
324		Default: yes
325
326MKSOFTFLOAT	If not "no", build with options to enable the compiler to
327		generate output containing library calls for floating
328		point and possibly soft-float library support.
329		Default: no
330
331MKSTATICLIB	If "no", don't build or install the normal static (*.a)
332		libraries.
333		Default: yes
334
335MKUNPRIVED	If not "no", don't set the owner/group/mode when installing
336		files or directories, and keep a metadata log of what
337		the owner/group/mode should be.  This allows a
338		non-root "make install".
339		Default: no
340
341MKUPDATE 	If not "no", 'make install' only installs targets that are
342		more recently modified in the source directories that their
343		installed counterparts.
344		Default: no
345
346MKX11		If not "no", depending on the value of ${X11FLAVOUR},
347		'make build' also descends into either src/x11 (XFree86) or
348		src/external/mit/xorg (modular Xorg) to cross-build X11 and
349		automatically enables creation of X sets.
350		Default: no
351
352MKX11FONTS	If not "no", if ${X11FLAVOUR} is "Xorg", do not build or
353		install the X fonts.  The xfont set is still created but
354		will be empty.
355		Default: yes
356
357MKYP		If "no", disables building of YP (NIS)
358		infrastructure (libraries and support programs).
359		Default: yes
360
361MKZFS		If "no", do not build and install utilities and libraries
362		used to manage ZFS file system. Do not build zfs and solaris
363		compatibility kernel modules.
364		Default: yes on i386/amd64, no elsewhere.
365
366USE_HESIOD	If "no", disables building Hesiod support into
367		various system utilities/libraries that support it.
368		If ${MKHESIOD} is "no", USE_HESIOD will also be
369		forced to "no".
370
371USE_INET6	If "no", disables building INET6 (IPv6) support into
372		various system utilities/libraries that support it.
373		If ${MKINET6} is "no", USE_INET6 will also be
374		forced to "no".
375
376USE_JEMALLOC	If "no", disables building the "jemalloc" allocator
377		designed for improved performance with threaded
378		applications.  The "phkmalloc" allocator as used up
379		before NetBSD-5.0 will be substituted.
380
381USE_KERBEROS	If "no", disables building Kerberos v5
382		support into various system utilities/libraries that
383		support it.  If ${MKKERBEROS} is "no", USE_KERBEROS
384		will also be forced to "no".
385
386USE_LDAP	If "no", disables building LDAP support into various
387		system utilities/libraries that support it.
388		If ${MKLDAP} is "no", USE_LDAP will also be forced to "no".
389
390USE_PAM		If "no", disables building PAM authentication support
391		into various system utilities/libraries that support it.
392		If ${MKPAM} is "no", USE_PAM will also be forced to "no".
393
394USE_SKEY	If "no", disables building S/key authentication
395		support into various system utilities/libraries that
396		support it.  If ${MKSKEY} is "no", USE_SKEY will
397		also be forced to "no".
398		Default: no
399
400USE_SSP		If "no", disables GCC stack protection code, which
401		detects stack overflows and aborts the program. The
402		stack protection code imposes a performance penalty
403		of about 5%.
404		Default: "no", unless "USE_FORT" is set to "yes"
405
406USE_FORT 	If "yes" turns on substitute wrappers for commonly used
407		functions that do not do bounds checking regularly, but
408		they could in some cases by using the gcc
409		__builtin_object_size() function to determine the buffer
410		size where it is known and detect buffer overflows.
411		These substitute functions are in /usr/include/ssp.
412		Default: depends on the part of the source tree
413
414USE_YP		If "no", disables building YP (NIS) support into
415		various system utilities/libraries that support it.
416		If ${MKYP} is "no", USE_YP will also be forced to "no".
417
418USE_PIGZGZIP	If "no", use the host "gzip" program to compress things.
419		Otherwise, build tools/pigz and use nbpigz to compress
420		things.
421		Default: "no".
422
423X11FLAVOUR	Set to "Xorg" or "XFree86", depending on whether to build
424		XFree86 or modular Xorg.  Only matters if MKX11!=no.
425		Default: "Xorg" on amd64, i386, macppc, shark and sparc64,
426		"XFree86" on everything else.
427
428COPTS.lib<lib>
429OBJCOPTS.lib<lib>
430LDADD.lib<lib>
431CPPFLAGS.lib<lib>
432CXXFLAGS.lib<lib>
433COPTS.<prog>
434OBJCCOPTS.<prog>
435LDADD.<prog>
436CPPFLAGS.<prog>
437CXXFLAGS.<prog>	These provide a way to specify additions to the associated
438		variables in a way that applies only to a particular library
439		or program.  <lib> corresponds to the LIB variable set in
440		the library's makefile.  <prog> corresponds to either PROG
441		or PROG_CXX (if set).  For example, if COPTS.libcrypto is
442		set to "-g", "-g" will be added to COPTS only when compiling
443		the crypto library.
444
445The active compiler is selected using the following variables:
446AVAILABLE_COMPILER
447		List of available compiler suites.  Processed in order
448		for selecting the active compiler for each frontend.
449HAVE_PCC	If defined, PCC is present and enabled.
450HAVE_LLVM	If defined, LLVM/Clang is present and enabled.
451UNSUPPORTED_COMPILER.xxx
452		If defined, the support for compiler "xxx" is disabled.
453
454For the frontends (CC, CPP, CXX, FC and OBJC) the following variables exist:
455ACTIVE_CC	Active compile suite for the CC frontend.
456SUPPORTED_CC	Compile suite with support for the CC frontend.
457TOOL_CC.xxx	Path to the CC frontend for compiler "xxx"
458
459=-=-=-=-=   sys.mk   =-=-=-=-=
460
461The include file <sys.mk> has the default rules for all makes, in the BSD
462environment or otherwise.  You probably don't want to touch this file.
463
464=-=-=-=-=   bsd.own.mk   =-=-=-=-=
465
466The include file <bsd.own.mk> contains source tree configuration parameters,
467such as the owners, groups, etc. for both manual pages and binaries, and
468a few global "feature configuration" parameters.
469
470It has no targets.
471
472To get system-specific configuration parameters, <bsd.own.mk> will try to
473include the file specified by the "MAKECONF" variable.  If MAKECONF is not
474set, or no such file exists, the system make configuration file, /etc/mk.conf
475is included.  These files may define any of the variables described below.
476
477<bsd.own.mk> sets the following variables, if they are not already defined
478(defaults are in brackets):
479
480NETBSDSRCDIR	Top of the NetBSD source tree.
481		If _SRC_TOP_ != "", that will be used as the default,
482		otherwise BSDSRCDIR will be used as the default.
483		Various makefiles within the NetBSD source tree will
484		use this to reference the top level of the source tree.
485
486_SRC_TOP_	Top of the system source tree, as determined by <bsd.own.mk>
487		based on the presence of tools/ and build.sh.  This variable
488		is "internal" to <bsd.own.mk>, although its value is only
489		determined once and then propagated to all sub-makes.
490
491BSDSRCDIR	The real path to the system sources, so that 'make obj'
492		will work correctly.  [/usr/src]
493
494BSDOBJDIR	The real path to the system 'obj' tree, so that 'make obj'
495		will work correctly.  [/usr/obj]
496
497BINGRP		Binary group.  [wheel]
498
499BINOWN		Binary owner.  [root]
500
501BINMODE		Binary mode.  [555]
502
503NONBINMODE	Mode for non-executable files.  [444]
504
505MANDIR		Base path for manual installation.  [/usr/share/man/cat]
506
507MANGRP		Manual group.  [wheel]
508
509MANOWN		Manual owner.  [root]
510
511MANMODE		Manual mode.  [${NONBINMODE}]
512
513MANINSTALL	Manual installation type.  Space separated list:
514			catinstall, htmlinstall, maninstall
515		[catinstall maninstall htmlinstall]
516
517LDSTATIC	Control program linking; if set blank, link everything
518		dynamically.  If set to "-static", link everything statically.
519		If not set, programs link according to their makefile.
520
521LIBDIR		Base path for library installation.  [/usr/lib]
522
523LINTLIBDIR	Base path for lint(1) library installation.  [/usr/libdata/lint]
524
525LIBGRP		Library group.  [${BINGRP}]
526
527LIBOWN		Library owner.  [${BINOWN}]
528
529LIBMODE		Library mode.  [${NONBINMODE}]
530
531DOCDIR		Base path for system documentation (e.g. PSD, USD, etc.)
532	        installation.  [/usr/share/doc]
533
534HTMLDOCDIR	Base path for html system documentation installation.
535		[/usr/share/doc/html]
536
537DOCGRP		Documentation group.  [wheel]
538
539DOCOWN		Documentation owner.  [root]
540
541DOCMODE		Documentation mode.  [${NONBINMODE}]
542
543NLSDIR		Base path for Native Language Support files installation.
544		[/usr/share/nls]
545
546NLSGRP		Native Language Support files group.  [wheel]
547
548NLSOWN		Native Language Support files owner.  [root]
549
550NLSMODE		Native Language Support files mode.  [${NONBINMODE}]
551
552X11SRCDIR	The path to the xsrc tree.  [${NETBSDSRCDIR}/../xsrc,
553		if that exists; otherwise /usr/xsrc]
554
555X11SRCDIR.xc	The path to the (old) X11 xc src tree.  [${X11SRCDIR}/xfree/xc]
556
557X11SRCDIR.local	The path to the local X11 src tree.  [${X11SRCDIR}/local]
558
559X11SRCDIR.lib<package>
560X11SRCDIR.<package>
561		The path to the xorg src tree for the specificed package>.
562		[${X11SRCDIR}/external/mit/xorg/<package>/dist]
563
564X11ROOTDIR	Root directory of the X11 installation.  [/usr/X11R6 or
565		[/usr/X11R7]
566
567X11BINDIR	X11 bin directory.  [${X11ROOTDIR}/bin]
568
569X11FONTDIR	X11 font directory.  [${X11ROOTDIR}/lib/X11/fonts]
570
571X11INCDIR	X11 include directory.  [${X11ROOTDIR}/include]
572
573X11LIBDIR	X11 lib/x11 (config) directory.  [${X11ROOTDIR}/lib/X11]
574
575X11MANDIR	X11 manual directory.  [${X11ROOTDIR}/man]
576
577X11USRLIBDIR	X11 library directory.  [${X11ROOTDIR}/lib]
578
579STRIPFLAG	The flag passed to the install program to cause the binary
580		to be stripped.  This is to be used when building your
581		own install script so that the entire system can be made
582		stripped/not-stripped using a single knob.  []
583
584COPY		The flag passed to the install program to cause the binary
585		to be copied rather than moved.  This is to be used when
586		building our own install script so that the entire system
587		can either be installed with copies, or with moves using
588		a single knob.  [-c]
589
590MAKEDIRTARGET dir target [params]
591		Runs "cd $${dir} && ${MAKE} [params] $${target}",
592		displaying a "pretty" message whilst doing so.
593
594RELEASEMACHINEDIR
595		Subdirectory used below RELEASEDIR when building
596		a release.  [${MACHINE}]
597
598RELEASEMACHINE	Subdirectory or path component used for the following
599		paths:
600			distrib/${RELEASEMACHINE}
601			distrib/notes/${RELEASEMACHINE}
602			etc/etc.${RELEASEMACHINE}
603		Used when building a release.  [${MACHINE}]
604
605Additionally, the following variables may be set by <bsd.own.mk> or in a
606make configuration file to modify the behavior of the system build
607process (default values are in brackets along with comments, if set by
608<bsd.own.mk>):
609
610USETOOLS	Indicates whether the tools specified by ${TOOLDIR} should
611		be used as part of a build in progress.
612		Supported values:
613
614		yes	Use the tools from TOOLDIR.
615			Must be set to this if cross-compiling.
616
617		no	Do not use the tools from TOOLDIR, but refuse to
618			build native compilation tool components that are
619			version-specific for that tool.
620
621		never	Do not use the tools from TOOLDIR, even when
622			building native tool components.  This is similar to
623			the traditional NetBSD build method, but does not
624			verify that the compilation tools in use are
625			up-to-date enough in order to build the tree
626			successfully.  This may cause build or runtime
627			problems when building the whole NetBSD source tree.
628
629		Default: "yes" if building all or part of a whole NetBSD
630		source tree (detected automatically); "no" otherwise
631		(to preserve traditional semantics of the <bsd.*.mk>
632		make(1) include files).
633
634OBJECT_FMT	Object file format.  [set to "ELF" on architectures that
635		use ELF -- currently all architectures].
636
637TOOLCHAIN_MISSING
638		If not "no", this indicates that the platform being built
639		does not have a working in-tree toolchain.  If the
640		${MACHINE_ARCH} in question falls into this category,
641		TOOLCHAIN_MISSING is conditionally assigned the value "yes".
642		Otherwise, the variable is unconditionally assigned the
643		value "no".
644		If not "no", ${MKBINUTILS}, ${MKGCC}, and ${MKGDB} are
645		unconditionally assigned the value "no".
646
647EXTERNAL_TOOLCHAIN
648		This variable is not directly set by <bsd.own.mk>, but
649		including <bsd.own.mk> is the canonical way to gain
650		access to this variable.  The variable should be defined
651		either in the user's environment or in the user's mk.conf
652		file.  If defined, this variable indicates the root of
653		an external toolchain which will be used to build the
654		tree.  For example, if a platform is a ${TOOLCHAIN_MISSING}
655		platform, EXTERNAL_TOOLCHAIN can be used to re-enable the
656		cross-compile framework.
657
658		If EXTERNAL_TOOLCHAIN is defined, ${MKGCC} is unconditionally
659		assigned the value "no", since the external version of the
660		compiler may not be able to build the library components of
661		the in-tree compiler.
662
663		NOTE: This variable is not yet used in as many places as
664		it should be.  Expect the exact semantics of this variable
665		to change in the short term as parts of the cross-compile
666		framework continue to be cleaned up.
667
668The following variables are defined to commands to perform the
669appropriate operation, with the default in [brackets].  Note that
670the defaults change if USETOOLS == "yes":
671
672TOOL_AMIGAAOUT2BB	aout to Amiga bootblock converter.  [amiga-aout2bb]
673
674TOOL_AMIGAELF2BB	ELF to Amiga bootblock converter.  [amiga-elf2bb]
675
676TOOL_AMIGATXLT		Amige assembly language format translator.  [amiga-txlt]
677
678TOOL_ASN1_COMPILE	ASN1 compiler.  [asn1_compile]
679
680TOOL_AWK		Pattern-directed scanning/processing language.  [awk]
681
682TOOL_CAP_MKDB		Create capability database.  [cap_mkdb]
683
684TOOL_CAT		Concatenate and print files.  [cat]
685
686TOOL_CKSUM		Display file checksums.  [cksum]
687
688TOOL_COMPILE_ET		Error table compiler.  [compile_et]
689
690TOOL_CONFIG		Build kernel compilation directories.  [config]
691
692TOOL_CRUNCHGEN		Generate crunched binary build environment.  [crunchgen]
693
694TOOL_CTAGS		Create a tags file.  [ctags]
695
696TOOL_DB			Manipulate db(3) databases.  [db]
697
698TOOL_DISKLABEL		Read and write disk pack label.  [disklabel]
699
700TOOL_EQN		Format equations for groff.  [eqn]
701
702TOOL_FDISK		MS-DOS partition maintenance program.  [fdisk]
703
704TOOL_FGEN		IEEE 1275 Open Firmware FCode Tokenizer.  [fgen]
705
706TOOL_GENASSYM		Generate constants for assembly files.  [genassym]
707
708TOOL_GENCAT		Generate NLS message catalogs.  [gencat]
709
710TOOL_GMAKE		GNU make utility.  [gmake]
711
712TOOL_GREP		Print lines matching a pattern.  [grep]
713
714TOOL_GROFF		Front end for groff document formatting system.  [groff]
715
716TOOL_HEXDUMP		Ascii, decimal, hexadecimal, octal dump.  [hexdump]
717
718TOOL_HP300MKBOOT	Make bootable image for hp300.  [hp300-mkboot]
719
720TOOL_HP700MKBOOT	Make bootable image for hp700.  [hp700-mkboot]
721
722TOOL_INDXBIB		Make bibliographic database's inverted index.  [indxbib]
723
724TOOL_INSTALLBOOT	Install disk bootstrap software.  [installboot]
725
726TOOL_INSTALL_INFO	Update info/dir entries.  [install-info]
727
728TOOL_JOIN		Relational database operator.  [join]
729
730TOOL_M4			M4 macro language processor.  [m4]
731
732TOOL_MACPPCFIXCOFF	Fix up xcoff headers for macppc.  [macppc-fixcoff]
733
734TOOL_MAKEFS		Create file system image from directory tree.  [makefs]
735
736TOOL_MAKEINFO		Translate Texinfo documents.  [makeinfo]
737
738TOOL_MAKEWHATIS		Create a whatis.db database.  [makewhatis]
739
740TOOL_MDSETIMAGE		Set kernel RAM disk image.  [mdsetimage]
741
742TOOL_MENUC		Menu compiler.  [menuc]
743
744TOOL_MIPSELF2ECOFF	Convert ELF-format executable to ECOFF for mips.
745			[mips-elf2ecoff]
746
747TOOL_MKCSMAPPER		Make charset mapping table.  [mkcsmapper]
748
749TOOL_MKESDB		Make encoding scheme database.  [mkesdb]
750
751TOOL_MKLOCALE		Make LC_CTYPE locale files.  [mklocale]
752
753TOOL_MKMAGIC		Create database for file(1).  [file]
754
755TOOL_MKTEMP		Make (unique) temporary file name.  [mktemp]
756
757TOOL_MSGC		Simple message list compiler.  [msgc]
758
759TOOL_MTREE		Map a directory hierarchy.  [mtree]
760
761TOOL_PAX		Manipulate file archives and copy directories.  [pax]
762
763TOOL_PIC		Compile pictures for groff.  [pic]
764
765TOOL_PIGZ		Parallel compressor.  [pigz]
766
767TOOL_POWERPCMKBOOTIMAGE	Make bootable image for powerpc.  [powerpc-mkbootimage]
768
769TOOL_PWD_MKDB		Generate the password databases.  [pwd_mkdb]
770
771TOOL_REFER		Preprocess bibliographic references for groff.  [refer]
772
773TOOL_ROFF_ASCII		Generate ASCII groff output.  [nroff]
774
775TOOL_ROFF_DVI		Generate DVI groff output.  [${TOOL_GROFF} -Tdvi]
776
777TOOL_ROFF_HTML		Generate HTML groff output.
778			[${TOOL_GROFF} -Tlatin1 -mdoc2html]
779
780TOOL_ROFF_PS		Generate PS groff output.  [${TOOL_GROFF} -Tps]
781
782TOOL_ROFF_RAW		Generate "raw" groff output.  [${TOOL_GROFF} -Z]
783
784TOOL_RPCGEN		Remote Procedure Call (RPC) protocol compiler.  [rpcgen]
785
786TOOL_SED		Stream editor.  [sed]
787
788TOOL_SOELIM		Eliminate .so's from groff input.  [soelim]
789
790TOOL_SPARKCRC		Generate a crc suitable for use in a sparkive file.
791			[sparkcrc]
792
793TOOL_STAT		Display file status.  [stat]
794
795TOOL_STRFILE		Create a random access file for storing strings.
796			[strfile]
797
798TOOL_SUNLABEL		Read or modify a SunOS disk label.  [sunlabel]
799
800TOOL_TBL		Format tables for groff.  [tbl]
801
802TOOL_UUDECODE		Uudecode a binary file.  [uudecode]
803
804TOOL_VGRIND		Grind nice listings of programs.  [vgrind -f]
805
806TOOL_ZIC		Time zone compiler.  [zic]
807
808<bsd.own.mk> is generally useful when building your own Makefiles so that
809they use the same default owners etc. as the rest of the tree.
810
811
812=-=-=-=-=   bsd.dep.mk   =-=-=-=-=
813
814The include file <bsd.dep.mk> contains the default targets for building
815.depend files.  It creates .d files from entries in SRCS and DPSRCS
816that are C, C++, or Objective C source files, and builds .depend from the
817.d files.  All other files in SRCS and all of DPSRCS will be used as
818dependencies for the .d files.  In order for this to function correctly,
819it should be .included after all other .mk files and directives that may
820modify SRCS or DPSRCS.  It uses the following variables:
821
822SRCS		List of source files to build the program.
823
824DPSRCS		List of source files which are needed for generating
825		dependencies, but are not needed in ${SRCS}.
826
827
828=-=-=-=-=   bsd.files.mk   =-=-=-=-=
829
830The include file <bsd.files.mk> handles the FILES variables and is included
831from <bsd.lib.mk> and <bsd.prog.mk>, and uses the following variables:
832
833FILES		The list of files to install.
834
835CONFIGFILES	Similar semantics to FILES, except that the files
836		are installed by the `configinstall' target,
837		not the `install' target.
838		The FILES* variables documented below also apply.
839
840FILESOWN	File owner.  [${BINOWN}]
841
842FILESGRP	File group.  [${BINGRP}]
843
844FILESMODE	File mode.  [${NONBINMODE}]
845
846FILESDIR	The location to install the files.
847
848FILESNAME	Optional name to install each file as.
849
850FILESOWN_<fn>	File owner of the specific file <fn>.
851
852FILESGRP_<fn>	File group of the specific file <fn>.
853
854FILESMODE_<fn>	File mode of the specific file <fn>.
855
856FILESDIR_<fn>	The location to install the specific file <fn>.
857
858FILESNAME_<fn>	Optional name to install <fn> as.
859
860FILESBUILD_<fn>	A value different from "no" will add the file to the list of
861		targets to be built by `realall'.  Users of that variable
862		should provide a target to build the file.
863
864
865BUILDSYMLINKS	List of two word items:
866			lnsrc lntgt
867		For each lnsrc item, create a symlink named lntgt.
868		The lntgt symlinks are removed by the cleandir target.
869
870UUDECODE_FILES	List of files which are stored as <file>.uue in the source
871		tree. Each one will be decoded with ${TOOL_UUDECODE}.
872		The source files have a `.uue' suffix, the generated files do
873		not.
874
875UUDECODE_FILES_RENAME_<fn>
876		Rename the output from the decode to the provided name.
877
878		*NOTE: These files are simply decoded, with no install or other
879		       rule applying implicitly except being added to the clean
880		       target.
881
882=-=-=-=-=   bsd.gcc.mk   =-=-=-=-=
883
884The include file <bsd.gcc.mk> computes various parameters related to GCC
885support libraries.  It defines no targets.  <bsd.own.mk> MUST be included
886before <bsd.gcc.mk>.
887
888The primary users of <bsd.gcc.mk> are <bsd.prog.mk> and <bsd.lib.mk>, each
889of which need to know where to find certain GCC support libraries.
890
891The behavior of <bsd.gcc.mk> is influenced by the EXTERNAL_TOOLCHAIN variable,
892which is generally set by the user.  If EXTERNAL_TOOLCHAIN it set, then
893the compiler is asked where to find the support libraries, otherwise the
894support libraries are found in ${DESTDIR}/usr/lib.
895
896<bsd.gcc.mk> sets the following variables:
897
898_GCC_CRTBEGIN	The full path name to crtbegin.o.
899
900_GCC_CRTBEGINS	The full path name to crtbeginS.o.
901
902_GCC_CRTEND	The full path name to crtend.o.
903
904_GCC_CRTENDS	The full path name to crtendS.o.
905
906_GCC_LIBGCCDIR	The directory where libgcc.a is located.
907
908
909=-=-=-=-=   bsd.inc.mk   =-=-=-=-=
910
911The include file <bsd.inc.mk> defines the includes target and uses the
912variables:
913
914INCS		The list of include files.
915
916INCSDIR		The location to install the include files.
917
918INCSNAME	Target name of the include file, if only one; same as
919		FILESNAME, but for include files.
920
921INCSYMLINKS	Similar to SYMLINKS in <bsd.links.mk>, except that these
922		are installed in the 'includes' target and not the
923		(much later) 'install' target.
924
925INCSNAME_<file>	The name file <file> should be installed as, if not <file>,
926		same as FILESNAME_<file>, but for include files.
927
928
929=-=-=-=-=   bsd.info.mk   =-=-=-=-=
930
931The include file <bsd.info.mk> is used to generate and install GNU Info
932documentation from respective Texinfo source files.  It defines three
933implicit targets (.txi.info, .texi.info, and .texinfo.info), and uses the
934following variables:
935
936TEXINFO		List of Texinfo source files.  Info documentation will
937		consist of single files with the extension replaced by
938		.info.
939
940INFOFLAGS	Flags to pass to makeinfo.  []
941
942
943=-=-=-=-=   bsd.kernobj.mk   =-=-=-=-=
944
945The include file <bsd.kernobj.mk> defines variables related to the
946location of kernel sources and object directories.
947
948KERNSRCDIR	Is the location of the top of the kernel src.
949		[${_SRC_TOP_}/sys]
950
951KERNARCHDIR	Is the location of the machine dependent kernel sources.
952		[arch/${MACHINE}]
953
954KERNCONFDIR	Is where the configuration files for kernels are found.
955		[${KERNSRCDIR}/${KERNARCHDIR}/conf]
956
957KERNOBJDIR	Is the kernel build directory.  The kernel GENERIC for
958		instance will be compiled in ${KERNOBJDIR}/GENERIC.
959		The default value is
960		${MAKEOBJDIRPREFIX}${KERNSRCDIR}/${KERNARCHDIR}/compile
961		if it exists or the target 'obj' is being made.
962		Otherwise the default is
963		${KERNSRCDIR}/${KERNARCHDIR}/compile.
964
965It is important that Makefiles (such as those under src/distrib) that
966wish to find compiled kernels use <bsd.kernobj.mk> and ${KERNOBJDIR}
967rather than make assumptions about the location of the compiled kernel.
968
969
970=-=-=-=-=   bsd.kinc.mk   =-=-=-=-=
971
972The include file <bsd.kinc.mk> defines the many targets (includes,
973subdirectories, etc.), and is used by kernel makefiles to handle
974include file installation.  It is intended to be included alone, by
975kernel Makefiles.  It uses similar variables to <bsd.inc.mk>.
976Please see <bsd.kinc.mk> for more details, and keep the documentation
977in that file up to date.
978
979
980=-=-=-=-=   bsd.lib.mk   =-=-=-=-=
981
982The include file <bsd.lib.mk> has support for building libraries.  It has
983the same eight targets as <bsd.prog.mk>: all, clean, cleandir, depend,
984includes, install, lint, and tags.  Additionally, it has a checkver target
985which checks for installed shared object libraries whose version is greater
986that the version of the source. It has a limited number of suffixes,
987consistent with the current needs of the BSD tree.  <bsd.lib.mk> includes
988<bsd.shlib.mk> to get shared library parameters.
989
990It sets/uses the following variables:
991
992LIB		The name of the library to build.
993
994LIBDIR		Target directory for libraries.
995
996MKARZERO	Normally, ar(1) sets the timestamps, uid, gid and
997		permissions in files inside its archives to those of
998		the file it was fed. This leads to non-reproduceable
999		builds. If MKARZERO is set to "yes" (default is "no")
1000		then the "D" flag is passed to ar, causing the
1001		timestamp, uid and gid to be zeroed and the file
1002		permissions to be set to 644. This allows .a files
1003		from different builds to be bit identical.
1004
1005SHLIBINSTALLDIR	Target directory for shared libraries if ${USE_SHLIBDIR}
1006		is not "no".
1007
1008SHLIB_MAJOR
1009SHLIB_MINOR
1010SHLIB_TEENY	Major, minor, and teeny version numbers of shared library
1011
1012USE_SHLIBDIR	If not "no", use ${SHLIBINSTALLDIR} instead of ${LIBDIR}
1013		as the path to install shared libraries to.
1014		USE_SHLIBDIR must be defined before <bsd.own.mk> is included.
1015		Default: no
1016
1017LIBISMODULE	If not "no", install as ${LIB}.so (without the "lib" prefix),
1018		and act as "MKDEBUGLIB=no MKLINT=no MKPICINSTALL=no
1019		MKPROFILE=no MKSTATICLIB=no".
1020		Default: no
1021
1022LIBISPRIVATE	If not "no", act as "MKDEBUGLIB=no MKLINT=no MKPIC=no
1023		MKPROFILE=no", and don't install the (.a) library.
1024		This is useful for "build only" helper libraries.
1025		Default: no
1026
1027LIBISCXX	If not "no", Use ${CXX} instead of ${CC} to link
1028		shared libraries.
1029		This is useful for C++ libraries.
1030		Default: no
1031
1032LINTLIBDIR	Target directory for lint libraries.
1033
1034LIBGRP		Library group.
1035
1036LIBOWN		Library owner.
1037
1038LIBMODE		Library mode.
1039
1040LDADD		Additional loader objects.
1041
1042MAN		The manual pages to be installed (use a .1 - .9 suffix).
1043
1044NOCHECKVER_<library>
1045NOCHECKVER	If set, disables checking for installed shared object
1046		libraries with versions greater than the source.  A
1047		particular library name, without the "lib" prefix, may
1048		be appended to the variable name to disable the check for
1049		only that library.
1050
1051SRCS		List of source files to build the library.  Suffix types
1052		.s, .c, and .f are supported.  Note, .s files are preferred
1053		to .c files of the same name.  (This is not the default for
1054		versions of make.)
1055
1056LIBDPLIBS	A list of the tuples:
1057			libname  path-to-srcdir-of-libname
1058
1059		For each tuple;
1060		     *	LIBDO.libname contains the .OBJDIR of the library
1061			`libname', and if it is not set it is determined
1062			from the srcdir and added to MAKEOVERRIDES (the
1063			latter is to allow for build time optimization).
1064		     *	LDADD gets  -L${LIBDO.libname} -llibname    added.
1065		     *	DPADD gets  ${LIBDO.libname}/liblibname.so  or
1066				    ${LIBDO.libname}/liblibname.a   added.
1067
1068		This variable may be used for individual libraries, as
1069		well as in parent directories to cache common libraries
1070		as a build-time optimization.
1071
1072The include file <bsd.lib.mk> includes the file named "../Makefile.inc"
1073if it exists, as well as the include file <bsd.man.mk>.
1074
1075It has rules for building profiled objects; profiled libraries are
1076built by default.
1077
1078Libraries are ranlib'd when made.
1079
1080
1081=-=-=-=-=   bsd.links.mk   =-=-=-=-=
1082
1083The include file <bsd.links.mk> handles the LINKS and SYMLINKS variables
1084and is included from from <bsd.lib.mk> and <bsd.prog.mk>.
1085
1086LINKSOWN, LINKSGRP, and LINKSMODE, are relevant only if a metadata log
1087is used. The defaults may be modified by other bsd.*.mk files which
1088include bsd.links.mk.  In the future, these variables may be replaced
1089by a method for explicitly recording hard links in a metadata log.
1090
1091LINKS		The list of hard links, consisting of pairs of paths:
1092			source-file target-file
1093		${DESTDIR} is prepended to both paths before linking.
1094		For example, to link /bin/test and /bin/[, use:
1095			LINKS=/bin/test /bin/[
1096
1097CONFIGLINKS	Similar semantics to LINKS, except that the links
1098		are installed by the `configinstall' target,
1099		not the `install' target.
1100
1101SYMLINKS	The list of symbolic links, consisting of pairs of paths:
1102			source-file target-file
1103		${DESTDIR} is only prepended to target-file before linking.
1104		For example, to symlink /usr/bin/tar to /bin/tar resulting
1105		in ${DESTDIR}/usr/bin/tar -> /bin/tar:
1106			SYMLINKS=/bin/tar /usr/bin/tar
1107
1108CONFIGSYMLINKS	Similar semantics to SYMLINKS, except that the symbolic links
1109		are installed by the `configinstall' target,
1110		not the `install' target.
1111
1112LINKSOWN	Link owner.  [${BINOWN}]
1113
1114LINKSGRP	Link group.  [${BINGRP}]
1115
1116LINKSMODE	Link mode.  [${NONBINMODE}]
1117
1118LINKSOWN_<fn>	Link owner of the specific file <fn>.
1119
1120LINKSGRP_<fn>	Link group of the specific file <fn>.
1121
1122LINKSMODE_<fn>	Link mode of the specific file <fn>.
1123
1124
1125=-=-=-=-=   bsd.man.mk   =-=-=-=-=
1126
1127The include file <bsd.man.mk> handles installing manual pages and their
1128links.
1129
1130It has a three targets:
1131
1132	catinstall:
1133		Install the preformatted manual pages and their links.
1134	htmlinstall:
1135		Install the HTML manual pages and their links.
1136	maninstall:
1137		Install the manual page sources and their links.
1138
1139It sets/uses the following variables:
1140
1141MANDIR		Base path for manual installation.
1142
1143MANGRP		Manual group.
1144
1145MANOWN		Manual owner.
1146
1147MANMODE		Manual mode.
1148
1149MANSUBDIR	Subdirectory under the manual page section, i.e. "/vax"
1150		or "/tahoe" for machine specific manual pages.
1151
1152MAN		The manual pages to be installed (use a .1 - .9 suffix).
1153
1154MLINKS		List of manual page links (using a .1 - .9 suffix).  The
1155		linked-to file must come first, the linked file second,
1156		and there may be multiple pairs.
1157
1158The include file <bsd.man.mk> includes a file named "../Makefile.inc" if
1159it exists.
1160
1161
1162=-=-=-=-=   bsd.obj.mk   =-=-=-=-=
1163
1164The include file <bsd.obj.mk> defines targets related to the creation
1165and use of separated object and source directories.
1166
1167If an environment variable named MAKEOBJDIRPREFIX is set, make(1) uses
1168${MAKEOBJDIRPREFIX}${.CURDIR} as the name of the object directory if
1169it exists.  Otherwise make(1) looks for the existence of a
1170subdirectory (or a symlink to a directory) of the source directory
1171into which built targets should be placed.  If an environment variable
1172named MAKEOBJDIR is set, make(1) uses its value as the name of the
1173object directory; failing that, make first looks for a subdirectory
1174named "obj.${MACHINE}", and if that doesn't exist, it looks for "obj".
1175
1176Object directories are not created automatically by make(1) if they
1177don't exist; you need to run a separate "make obj".  (This will happen
1178during a top-level build if "MKOBJDIRS" is set to a value other than
1179"no").  When the source directory is a subdirectory of ${BSDSRCDIR} --
1180and this is determined by a simple string prefix comparison -- object
1181directories are created in a separate object directory tree, and a
1182symlink to the object directory in that tree is created in the source
1183directory; otherwise, "make obj" assumes that you're not in the main
1184source tree and that it's not safe to use a separate object tree.
1185
1186Several variables used by <bsd.obj.mk> control exactly what
1187directories and links get created during a "make obj":
1188
1189MAKEOBJDIR	If set, this is the component name of the object
1190		directory.
1191
1192OBJMACHINE	If this is set but MAKEOBJDIR is not set, creates
1193		object directories or links named "obj.${MACHINE}";
1194		otherwise, just creates ones named "obj".
1195
1196USR_OBJMACHINE  If set, and the current directory is a subdirectory of
1197		${BSDSRCDIR}, create object directory in the
1198		corresponding subdirectory of ${BSDOBJDIR}.${MACHINE};
1199		otherwise, create it in the corresponding subdirectory
1200		of ${BSDOBJDIR}
1201
1202BUILDID		If set, the contents of this variable are appended
1203		to the object directory name.  If OBJMACHINE is also
1204		set, ".${BUILDID}" is added after ".${MACHINE}".
1205
1206
1207=-=-=-=-=   bsd.prog.mk   =-=-=-=-=
1208
1209The include file <bsd.prog.mk> handles building programs from one or
1210more source files, along with their manual pages.  It has a limited number
1211of suffixes, consistent with the current needs of the BSD tree.
1212<bsd.prog.mk> includes <bsd.shlib.mk> to get shared library parameters.
1213
1214It has eight targets:
1215
1216	all:
1217		build the program and its manual page.  This also
1218		creates a GDB initialization file (.gdbinit) in
1219		the objdir.  The .gdbinit file sets the shared library
1220		prefix to ${DESTDIR} to facilitate cross-debugging.
1221	clean:
1222		remove the program, any object files and the files a.out,
1223		Errs, errs, mklog, and ${PROG}.core.
1224	cleandir:
1225		remove all of the files removed by the target clean, as
1226		well as .depend, tags, and any manual pages.
1227		`distclean' is a synonym for `cleandir'.
1228	depend:
1229		make the dependencies for the source files, and store
1230		them in the file .depend.
1231	includes:
1232		install any header files.
1233	install:
1234		install the program and its manual pages; if the Makefile
1235		does not itself define the target install, the targets
1236		beforeinstall and afterinstall may also be used to cause
1237		actions immediately before and after the install target
1238		is executed.
1239	lint:
1240		run lint on the source files
1241	tags:
1242		create a tags file for the source files.
1243
1244It sets/uses the following variables:
1245
1246BINGRP		Binary group.
1247
1248BINOWN		Binary owner.
1249
1250BINMODE		Binary mode.
1251
1252CLEANFILES	Additional files to remove for the clean and cleandir targets.
1253
1254COPTS		Additional flags to the compiler when creating C objects.
1255
1256COPTS.<fn>	Additional flags to the compiler when creating the
1257		C objects for <fn>.
1258		For <fn>.[ly], "<fn>.c" must be used.
1259
1260CPUFLAGS	Additional flags to the compiler/assembler to select
1261		CPU instruction set options, CPU tuning options, etc.
1262
1263CPUFLAGS.<fn>	Additional flags to the compiler/assembler for <fn>.
1264		For <fn>.[ly], "<fn>.c" must be used.
1265
1266CPPFLAGS	Additional flags to the C pre-processor.
1267
1268CPPFLAGS.<fn>	Additional flags to the C pre-processor for <fn>.
1269		For <fn>.[ly], "<fn>.c" must be used.
1270
1271GDBINIT		List of GDB initialization files to add to "source"
1272		directives in the .gdbinit file that is created in the
1273		objdir.
1274
1275LDADD		Additional loader objects.  Usually used for libraries.
1276		For example, to load with the compatibility and utility
1277		libraries, use:
1278
1279			LDADD+=-lutil -lcompat
1280
1281LDFLAGS		Additional linker flags (passed to ${CC} during link).
1282
1283LINKS		See <bsd.links.mk>
1284
1285OBJCOPTS	Additional flags to the compiler when creating ObjC objects.
1286
1287OBJCOPTS.<fn>	Additional flags to the compiler when creating the
1288		ObjC objects for <fn>.
1289		For <fn>.[ly], "<fn>.c" must be used.
1290
1291SYMLINKS	See <bsd.links.mk>
1292
1293MAN		Manual pages (should end in .1 - .9).  If no MAN variable is
1294		defined, "MAN=${PROG}.1" is assumed.
1295
1296PAXCTL_FLAGS	If defined, run paxctl(1) on the program binary after link
1297		time, with the value of this variable as args to paxctl(1).
1298
1299PAXCTL_FLAGS.${PROG} Custom override for PAXCTL_FLAGS.
1300
1301PROG		The name of the program to build.  If not supplied, nothing
1302		is built.
1303
1304PROG_CXX	If defined, the name of the program to build.  Also
1305		causes <bsd.prog.mk> to link the program with the C++
1306		compiler rather than the C compiler.  PROG_CXX overrides
1307		the value of PROG if PROG is also set.
1308
1309PROGNAME	The name that the above program will be installed as, if
1310		different from ${PROG}.
1311
1312SRCS		List of source files to build the program.  If SRCS is not
1313		defined, it's assumed to be ${PROG}.c.
1314
1315DPSRCS		List of source files which are needed for generating
1316		dependencies, but are not needed in ${SRCS}.
1317
1318DPADD		Additional dependencies for the program.  Usually used for
1319		libraries.  For example, to depend on the compatibility and
1320		utility libraries use:
1321
1322			DPADD+=${LIBCOMPAT} ${LIBUTIL}
1323
1324		The following libraries are predefined for DPADD:
1325
1326		LIBCRT0?=	${DESTDIR}/usr/lib/crt0.o
1327		LIBARCHIVE?=	${DESTDIR}/usr/lib/libarchive.a
1328		LIBASN1?=	${DESTDIR}/usr/lib/libasn1.a
1329		LIBATF_C?=	${DESTDIR}/usr/lib/libatf-c.a
1330		LIBATF_CXX?=	${DESTDIR}/usr/lib/libatf-c++.a
1331		LIBBLUETOOTH?=	${DESTDIR}/usr/lib/libbluetooth.a
1332		LIBBSDMALLOC?=	${DESTDIR}/usr/lib/libbsdmalloc.a
1333		LIBBZ2?=	${DESTDIR}/usr/lib/libbz2.a
1334		LIBC?=		${DESTDIR}/usr/lib/libc.a
1335		LIBC_PIC?=	${DESTDIR}/usr/lib/libc_pic.a
1336		LIBCOM_ERR?=	${DESTDIR}/usr/lib/libcom_err.a
1337		LIBCOMPAT?=	${DESTDIR}/usr/lib/libcompat.a
1338		LIBCRYPT?=	${DESTDIR}/usr/lib/libcrypt.a
1339		LIBCRYPTO?=	${DESTDIR}/usr/lib/libcrypto.a
1340		LIBCRYPTO_IDEA?=${DESTDIR}/usr/lib/libcrypto_idea.a
1341		LIBCRYPTO_MDC2?=${DESTDIR}/usr/lib/libcrypto_mdc2.a
1342		LIBCRYPTO_RC5?=	${DESTDIR}/usr/lib/libcrypto_rc5.a
1343		LIBCURSES?=	${DESTDIR}/usr/lib/libcurses.a
1344		LIBDBM?=	${DESTDIR}/usr/lib/libdbm.a
1345		LIBDES?=	${DESTDIR}/usr/lib/libdes.a
1346		LIBEDIT?=	${DESTDIR}/usr/lib/libedit.a
1347		LIBEVENT?=	${DESTDIR}/usr/lib/libevent.a
1348		LIBFETCH?=	${DESTDIR}/usr/lib/libfetch.a
1349		LIBFORM?=	${DESTDIR}/usr/lib/libform.a
1350		LIBGCC?=	${DESTDIR}/usr/lib/libgcc.a
1351		LIBGNUMALLOC?=	${DESTDIR}/usr/lib/libgnumalloc.a
1352		LIBGSSAPI?=	${DESTDIR}/usr/lib/libgssapi.a
1353		LIBHDB?=	${DESTDIR}/usr/lib/libhdb.a
1354		LIBINTL?=	${DESTDIR}/usr/lib/libintl.a
1355		LIBIPSEC?=	${DESTDIR}/usr/lib/libipsec.a
1356		LIBKADM5CLNT?=	${DESTDIR}/usr/lib/libkadm5clnt.a
1357		LIBKADM5SRV?=	${DESTDIR}/usr/lib/libkadm5srv.a
1358		LIBKAFS?=	${DESTDIR}/usr/lib/libkafs.a
1359		LIBKRB5?=	${DESTDIR}/usr/lib/libkrb5.a
1360		LIBKVM?=	${DESTDIR}/usr/lib/libkvm.a
1361		LIBL?=		${DESTDIR}/usr/lib/libl.a
1362		LIBLBER?=	${DESTDIR}/usr/lib/liblber.a
1363		LIBLDAP?=	${DESTDIR}/usr/lib/libldap.a
1364		LIBLDAP_R?=	${DESTDIR}/usr/lib/libldap_r.a
1365		LIBLUA?=	${DESTDIR}/usr/lib/liblua.a
1366		LIBM?=		${DESTDIR}/usr/lib/libm.a
1367		LIBMENU?=	${DESTDIR}/usr/lib/libmenu.a
1368		LIBOBJC?=	${DESTDIR}/usr/lib/libobjc.a
1369		LIBOSSAUDIO?=	${DESTDIR}/usr/lib/libossaudio.a
1370		LIBPAM?=	${DESTDIR}/usr/lib/libpam.a
1371		LIBPCAP?=	${DESTDIR}/usr/lib/libpcap.a
1372		LIBPCI?=	${DESTDIR}/usr/lib/libpci.a
1373		LIBPMC?=	${DESTDIR}/usr/lib/libpmc.a
1374		LIBPOSIX?=	${DESTDIR}/usr/lib/libposix.a
1375		LIBQUOTA?=	${DESTDIR}/usr/lib/libquota.a
1376		LIBPTHREAD?=	${DESTDIR}/usr/lib/libpthread.a
1377		LIBPTHREAD_DBG?=${DESTDIR}/usr/lib/libpthread_dbg.a
1378		LIBRADIUS?=	${DESTDIR}/usr/lib/libradius.a
1379		LIBRESOLV?=	${DESTDIR}/usr/lib/libresolv.a
1380		LIBRMT?=	${DESTDIR}/usr/lib/librmt.a
1381		LIBROKEN?=	${DESTDIR}/usr/lib/libroken.a
1382		LIBRPCSVC?=	${DESTDIR}/usr/lib/librpcsvc.a
1383		LIBRT?=		${DESTDIR}/usr/lib/librt.a
1384		LIBSKEY?=	${DESTDIR}/usr/lib/libskey.a
1385		LIBSL?=		${DESTDIR}/usr/lib/libsl.a
1386		LIBSS?=		${DESTDIR}/usr/lib/libss.a
1387		LIBSSH?=	${DESTDIR}/usr/lib/libssh.a
1388		LIBSSL?=	${DESTDIR}/usr/lib/libssl.a
1389		LIBSSP?=	${DESTDIR}/usr/lib/libssp.a
1390		LIBSTDCXX?=	${DESTDIR}/usr/lib/libstdc++.a
1391		LIBSUPCXX?=	${DESTDIR}/usr/lib/libsupc++.a
1392		LIBTERMINFO?=	${DESTDIR}/usr/lib/libterminfo.a
1393		LIBUSBHID?=	${DESTDIR}/usr/lib/libusbhid.a
1394		LIBUTIL?=	${DESTDIR}/usr/lib/libutil.a
1395		LIBWRAP?=	${DESTDIR}/usr/lib/libwrap.a
1396		LIBY?=		${DESTDIR}/usr/lib/liby.a
1397		LIBZ?=		${DESTDIR}/usr/lib/libz.a
1398
1399SHAREDSTRINGS	If defined, a new .c.o rule is used that results in shared
1400		strings, using xstr(1). Note that this will not work with
1401		parallel makes.
1402
1403STRIPFLAG	The flag passed to the install program to cause the binary
1404		to be stripped.
1405
1406SUBDIR		A list of subdirectories that should be built as well.
1407		Each of the targets will execute the same target in the
1408		subdirectories.
1409
1410SCRIPTS		A list of interpreter scripts [file.{sh,csh,pl,awk,...}].
1411		These are installed exactly like programs.
1412
1413SCRIPTSDIR	The location to install the scripts.  Each script can be
1414		installed to a separate path by setting SCRIPTSDIR_<script>.
1415
1416SCRIPTSNAME	The name that the above program will be installed as, if
1417		different from ${SCRIPTS}. These can be further specialized
1418		by setting SCRIPTSNAME_<script>.
1419
1420FILES		See description of <bsd.files.mk>.
1421
1422SHLINKDIR	Target directory for shared linker.  See description of
1423		<bsd.own.mk> for additional information about this variable.
1424
1425The include file <bsd.prog.mk> includes the file named "../Makefile.inc"
1426if it exists, as well as the include file <bsd.man.mk>.
1427
1428Some simple examples:
1429
1430To build foo from foo.c with a manual page foo.1, use:
1431
1432	PROG=	foo
1433
1434	.include <bsd.prog.mk>
1435
1436To build foo from foo.c with a manual page foo.2, add the line:
1437
1438	MAN=	foo.2
1439
1440If foo does not have a manual page at all, add the line:
1441
1442	MKMAN=	no
1443
1444If foo has multiple source files, add the line:
1445
1446	SRCS=	a.c b.c c.c d.c
1447
1448
1449=-=-=-=-=   bsd.rpc.mk   =-=-=-=-=
1450
1451The include file <bsd.rpc.mk> contains a makefile fragment used to
1452construct source files built by rpcgen.
1453
1454The following macros may be defined in makefiles which include
1455<bsd.rpc.mk> in order to control which files get built and how they
1456are to be built:
1457
1458RPC_INCS:	construct .h file from .x file
1459RPC_XDRFILES:	construct _xdr.c from .x file
1460		(for marshalling/unmarshalling data types)
1461RPC_SVCFILES:	construct _svc.c from .x file
1462		(server-side stubs)
1463RPC_SVCFLAGS:	Additional flags passed to builds of RPC_SVCFILES.
1464
1465RPC_XDIR:	Directory containing .x/.h files
1466
1467
1468=-=-=-=-=   bsd.shlib.mk   =-=-=-=-=
1469
1470The include file <bsd.shlib.mk> computes parameters for shared library
1471installation and use.  It defines no targets.  <bsd.own.mk> MUST be
1472included before <bsd.shlib.mk>.
1473
1474<bsd.own.mk> sets the following variables, if they are not already defined
1475(defaults are in brackets):
1476
1477SHLIBINSTALLDIR	If ${USE_SHLIBDIR} is not "no", use ${SHLIBINSTALLDIR}
1478		instead of ${LIBDIR} as the base path for shared library
1479		installation.  [/lib]
1480
1481SHLIBDIR	The path to USE_SHLIBDIR shared libraries to use when building
1482		a program.  [/lib for programs in /bin and /sbin, /usr/lib
1483		for all others.]
1484
1485_LIBSODIR	Set to ${SHLIBINSTALLDIR} if ${USE_SHLIBDIR} is not "no",
1486		otherwise set to ${LIBDIR}
1487
1488SHLINKINSTALLDIR Base path for shared linker.  [/libexec]
1489
1490SHLINKDIR	Path to use for shared linker when building a program.
1491		[/libexec for programs in /bin and /sbin, /usr/libexec for
1492		all others.]
1493
1494
1495=-=-=-=-=   bsd.subdir.mk   =-=-=-=-=
1496
1497The include file <bsd.subdir.mk> contains the default targets for building
1498subdirectories.  It has the same eight targets as <bsd.prog.mk>: all,
1499clean, cleandir, depend, includes, install, lint, and tags.  It uses the
1500following variables:
1501
1502NOSUBDIR	If this variable is defined, then the SUBDIR variable
1503		will be ignored and subdirectories will not be processed.
1504
1505SUBDIR		For all of the directories listed in ${SUBDIR}, the
1506		specified directory will be visited and the target made.
1507
1508		As a special case, the use of a token .WAIT as an
1509		entry in SUBDIR acts as a synchronization barrier
1510		when multiple make jobs are run; subdirs before the
1511		.WAIT must complete before any subdirs after .WAIT are
1512		started.  See make(1) for some caveats on use of .WAIT
1513		and other special sources.
1514
1515
1516=-=-=-=-=   bsd.sys.mk   =-=-=-=-=
1517
1518The include file <bsd.sys.mk> is used by <bsd.prog.mk> and
1519<bsd.lib.mk>.  It contains overrides that are used when building
1520the NetBSD source tree.
1521
1522The following variables control how various files are compiled/built.
1523(Note that these may be overridden in <bsd.own.mk> if USETOOLS == "yes"):
1524
1525AR		Create, modify, and extract from archives.  [ar]
1526
1527ARFLAGS		Options to ${AR}.  [rl]
1528
1529AS		Assembler.  [as]
1530
1531AFLAGS		Options to ${CC} when compiling or linking .s or .S
1532		assembly source files.  []
1533
1534BUILDSEED	GCC uses random numbers when compiling C++ code.
1535		If this option is present, seed the random number
1536		generator based on the value, source file names and
1537		the output file name to make builds more deterministic.
1538		Additional information is available in the GCC
1539		documentation of -frandom-seed.
1540
1541CC		C compiler.  [cc]
1542
1543CFLAGS		Options to ${CC}.  [Usually -O or -O2]
1544
1545CPP		C Pre-Processor.  [cpp]
1546
1547CPPFLAGS	Options to ${CPP}.  []
1548
1549CPUFLAGS	Optimization flags for ${CC}.  []
1550
1551CXX		C++ compiler.  [c++]
1552
1553CXXFLAGS	Options to ${CXX}.  [${CFLAGS}]
1554
1555ELF2ECOFF	Convert ELF-format executable to ECOFF.  [elf2ecoff]
1556
1557FC		Fortran compiler.  [f77]
1558
1559FFLAGS		Options to {$FC}.  [-O]
1560
1561HOST_SH		Shell.	This must be an absolute path, because it may be
1562		substituted into "#!" lines in scripts.	 [/bin/sh]
1563
1564INSTALL		install(1) command.  [install]
1565
1566LEX		Lexical analyzer.  [lex]
1567
1568LFLAGS		Options to ${LEX}.  []
1569
1570LPREFIX		Symbol prefix for ${LEX} (see -P option in lex(1)) [yy]
1571
1572LD		Linker.  [ld]
1573
1574LDFLAGS		Options to ${CC} during the link process.  []
1575
1576LINT		C program verifier.  [lint]
1577
1578LINTFLAGS	Options to ${LINT}.  [-chapbxzFS]
1579
1580LORDER		List dependencies for object files.  [lorder]
1581
1582MAKE		make(1).  [make]
1583
1584MKDEP		Construct Makefile dependency list.  [mkdep]
1585
1586NM		List symbols from object files.  [nm]
1587
1588PC		Pascal compiler.  [pc]  (Not present)
1589
1590PFLAGS		Options to ${PC}.  []
1591
1592OBJC		Objective C compiler.  [${CC}]
1593
1594OBJCFLAGS	Options to ${OBJC}.  [${CFLAGS}]
1595
1596OBJCOPY		Copy and translate object files.  [objcopy]
1597
1598OBJDUMP		Display information from object files.  [objdump]
1599
1600RANLIB		Generate index to archive.  [ranlib]
1601
1602SIZE		List section sizes and total size.  [size]
1603
1604STRIP		Discard symbols from object files.  [strip]
1605
1606TSORT		Topological sort of a directed graph.  [tsort -q]
1607
1608YACC		LALR(1) parser generator.  [yacc]
1609
1610YFLAGS		Options to ${YACC}.  []
1611
1612YHEADER		If defined, add "-d" to YFLAGS, and add dependencies
1613		from <file>.y to <file>.h and <file>.c, and add
1614		<foo>.h to CLEANFILES.
1615
1616YPREFIX		If defined, add "-p ${YPREFIX}" to YFLAGS.
1617
1618
1619Other variables of note (incomplete list):
1620
1621NOGCCERROR	If defined, prevents passing certain ${CFLAGS} to GCC
1622		that cause warnings to be fatal, such as:
1623			-Werror -Wa,--fatal-warnings
1624		(The latter being for as(1).)
1625
1626NOCLANGERROR	If defined and clang is used as C compiler, -Werror is not
1627		passed to it.
1628
1629WARNS		Crank up GCC warning options; the distinct levels are:
1630			WARNS=1
1631			WARNS=2
1632			WARNS=3
1633			WARNS=4
1634
1635=-=-=-=-=   bsd.x11.mk   =-=-=-=-=
1636
1637The include file <bsd.x11.mk> contains parameters and targets for
1638cross-building X11 from ${X11SRCDIR.xc} / ${X11MITSRCDIR.*}.
1639It should be included after the general Makefile contents but before
1640the include files such as <bsd.prog.mk> and <bsd.lib.mk>.
1641
1642It provides the following targets:
1643	.man.1 .man.3 .man.4 .man.5 .man.7:
1644		If ${MAN} or ${PROG} is set and ${MKMAN} != "no",
1645		these rules convert from X11's manual page source
1646		into an mdoc.old source file.
1647	cleanx11man:
1648		Clean up the mdoc.old files generated by the above.
1649
1650It sets the following variables:
1651
1652BINDIR			Set to ${X11BINDIR}.
1653			To override, define after including <bsd.x11.mk>
1654
1655LIBDIR			Set to ${X11USRLIBDIR}.
1656			To override, define after including <bsd.x11.mk>
1657
1658MANDIR			Set to ${X11MANDIR}.
1659			To override, define after including <bsd.x11.mk>
1660
1661CPPFLAGS		Appended with definitions to include from
1662			${DESTDIR}${X11INCDIR}
1663
1664LDFLAGS			Appended with definitions to link from
1665			${DESTDIR}${X11USRLIBDIR}
1666
1667X11FLAGS.CONNECTION	Equivalent to X11's CONNECTION_FLAGS.
1668
1669X11FLAGS.EXTENSION	Equivalent to X11's EXT_DEFINES.
1670
1671X11FLAGS.LOADABLE	Equivalent to X11's LOADABLE.
1672
1673X11FLAGS.OS_DEFINES	Equivalent to X11's OS_DEFINES.
1674
1675X11FLAGS.SERVER		Equivalent to X11's ServerDefines.
1676
1677X11FLAGS.THREADLIB	Equivalent to X11's THREADS_DEFINES for libraries.
1678
1679X11FLAGS.THREADS	Equivalent to X11's THREADS_DEFINES.
1680
1681X11FLAGS.VERSION	cpp(1) definitions of OSMAJORVERSION and OSMINORVERSION.
1682
1683X11FLAGS.DIX		Equivalent to X11's DIX_DEFINES.
1684
1685X11TOOL_UNXCOMM		Commandline to convert `XCOMM' comments to `#'
1686
1687It uses the following variables:
1688
1689APPDEFS			List of app-default files to install.
1690
1691CPPSCRIPTS		List of files/scripts to run through cpp(1)
1692			and then ${X11TOOL_UNXCOMM}.  The source files
1693			have a `.cpp' suffix, the generated files do not.
1694
1695CPPSCRIPTFLAGS		Additional flags to cpp(1) when building CPPSCRIPTS.
1696
1697CPPSCRIPTFLAGS_<fn>	Additional flags to cpp(1) when building CPPSCRIPT <fn>.
1698
1699
1700=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
1701