#       $NetBSD: bsd.README,v 1.455 2025/06/27 21:36:22 andvar Exp $
#       @(#)bsd.README  8.2 (Berkeley) 4/2/94

This is the README file for the make "include" files for the NetBSD
source tree.  The files are installed in /usr/share/mk, and are,
by convention, named with the suffix ".mk".

Other sources of relevant documentation are BUILDING in the top
level of the NetBSD source tree, and the mk.conf(5) man page.

Note: this file is not intended to replace reading through the .mk
files for anything tricky.

=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=

RANDOM THINGS WORTH KNOWING:

The files are simply C-style #include files, and pretty much behave like
you'd expect.  The syntax is slightly different in that a single '.' is
used instead of the hash mark, i.e. ".include <bsd.prog.mk>".

One difference that will save you lots of debugging time is that inclusion
of the file is normally done at the *end* of the Makefile.  The reason for
this is because .mk files often modify variables and behavior based on the
values of variables set in the Makefile.  To make this work, remember that
the FIRST target found is the target that is used, i.e. if the Makefile has:

       a:
               echo a
       a:
               echo a number two

the command "make a" will echo "a".  To make things confusing, the SECOND
variable assignment is the overriding one, i.e. if the Makefile has:

       a=      foo
       a=      bar

       b:
               echo ${a}

the command "make b" will echo "bar".  This is for compatibility with the
way the V7 make behaved.

It's fairly difficult to make the BSD .mk files work when you're building
multiple programs in a single directory.  It's a lot easier to split up the
programs than to deal with the problem.  Most of the agony comes from making
the "obj" directory stuff work right, not because we switched to a new version
of make.  So, don't get mad at us, figure out a better way to handle multiple
architectures so we can quit using the symbolic link stuff.  (Imake doesn't
count.)

The file .depend in the source directory is expected to contain dependencies
for the source files.  This file is read automatically by make after reading
the Makefile.

The variable DESTDIR works as before.  It's not set anywhere but will change
the tree where the file gets installed.

The profiled libraries are no longer built in a different directory than
the regular libraries.  A new suffix, ".po", is used to denote a profiled
object, and ".pico" denotes a shared (position-independent) object.

There are various make variables used during the build.

Many variables support a (case sensitive) value of "no" or "yes",
and are tested with  ${VAR} == "no"  and  ${VAR} != "no" .


The basic rule for the variable naming scheme is as follows:

HOST_<cmd>      A command that runs on the host machine regardless of
               whether or not the system is being cross compiled, or
               options for such a command.

MK<feature>     Can be set to "no" to disable feature <feature>,
               or "yes" to enable feature <feature>.
               Usually defaults to "yes", although some variables
               default to "no".
               Due to make(1) implementation issues, if a temporary
               command-line override of a mk.conf(5) or <bsd.own.mk>
               setting is required whilst still honoring a particular
               Makefile's setting of MK<feature>, use
                       env MK<feature>=value make
               instead of
                       make MK<feature>=value

NO<feature>     If defined, disables feature <feature>, overriding
               a user's MK<feature>=yes configuration.
               Not intended for users.
               This is to allow Makefiles to disable functionality
               that they don't support (such as missing man pages).
               NO<feature> variables must be defined before <bsd.own.mk>
               is included, which generally means define before
               any <*.mk> is included.
               See "Variables for a Makefile".

TOOL_<tool>     A tool that is provided as part of the USETOOLS
               framework.  When not using the USETOOLS framework,
               TOOL_<tool> variables should refer to tools that are
               already installed on the host system.

Various mk.conf(5) variables control the NetBSD system build.
These should not be set by Makefiles; they're for the user to define
in MAKECONF (see mk.conf(5) or <bsd.own.mk> documented below) or on
the make(1) command line.

The supported mk.conf(5) make variables are:

       BSDOBJDIR, BSDSRCDIR, BUILD, BUILDID, BUILDINFO, BUILDSEED,
       CDEXTRA, CONFIGOPTS, COPTS, CPUFLAGS, DESTDIR, EXTERNAL_TOOLCHAIN,
       INSTALLBOOT_BOARDS, INSTALLWORLDDIR, KERNARCHDIR, KERNCONFDIR,
       KERNEL_DIR, KERNOBJDIR, KERNSRCDIR, LOCALTIME, MAKEVERBOSE,
       MKAMDGPUFIRMWARE, MKARGON2, MKARZERO, MKATF, MKBINUTILS, MKBSDGREP,
       MKBSDTAR, MKCATPAGES, MKCLEANSRC, MKCLEANVERIFY, MKCOMPAT,
       MKCOMPATMODULES, MKCOMPATTESTS, MKCOMPATX11, MKCOMPLEX, MKCROSSGDB,
       MKCTF, MKCVS, MKCXX, MKDEBUG, MKDEBUGKERNEL, MKDEBUGLIB,
       MKDEBUGTOOLS, MKDEPINCLUDES, MKDOC, MKDTB, MKDTC, MKDTRACE,
       MKDYNAMICROOT, MKFIRMWARE, MKGCC, MKGCCCMDS, MKGDB, MKGROFF,
       MKGROFFHTMLDOC, MKHESIOD, MKHOSTOBJ, MKHTML, MKIEEEFP, MKINET6,
       MKINFO, MKIPFILTER, MKISCSI, MKKERBEROS, MKKMOD, MKKYUA, MKLDAP,
       MKLIBCSANITIZER, MKLIBCXX, MKLIBSTDCXX, MKLINKLIB, MKLINT, MKLLVM,
       MKLLVMRT, MKLVM, MKMAKEMANDB, MKMAN, MKMANDOC, MKMANZ, MKMDNS,
       MKNLS, MKNOUVEAUFIRMWARE, MKNPF, MKNSD, MKOBJ, MKOBJDIRS, MKPAM,
       MKPCC, MKPF, MKPIC, MKPICINSTALL, MKPICLIB, MKPIE, MKPIGZGZIP,
       MKPOSTFIX, MKPROFILE, MKRADEONFIRMWARE, MKRELRO, MKREPRO,
       MKREPRO_TIMESTAMP, MKRUMP, MKSANITIZER, MKSHARE, MKSKEY, MKSLJIT,
       MKSOFTFLOAT, MKSTATICLIB, MKSTATICPIE, MKSTRIPIDENT, MKSTRIPSYM,
       MKTEGRAFIRMWARE, MKTPM, MKUNBOUND, MKUNPRIVED, MKUPDATE, MKX11,
       MKX11FONTS, MKX11MOTIF, MKXORG_SERVER, MKYP, MKZFS, NETBSDSRCDIR,
       NETBSD_OFFICIAL_RELEASE, NOCLEANDIR, NODISTRIBDIRS, NOINCLUDES,
       OBJMACHINE, RELEASEDIR, RUMPUSER_THREADS, RUMP_CURLWP, RUMP_DEBUG,
       RUMP_DIAGNOSTIC, RUMP_KTRACE, RUMP_LOCKDEBUG, RUMP_LOCKS_UP,
       RUMP_NBCOMPAT, RUMP_VIRTIF, RUMP_VNODE_LOCKDEBUG,
       TOOLCHAIN_MISSING, TOOLDIR, USETOOLS, USE_FORT, USE_HESIOD,
       USE_INET6, USE_JEMALLOC, USE_KERBEROS, USE_LDAP, USE_LIBCSANITIZER,
       USE_PAM, USE_PIGZGZIP, USE_SANITIZER, USE_SKEY, USE_SSP,
       USE_XZ_SETS, USE_YP, X11MOTIFPATH, X11SRCDIR.

The obsolete mk.conf(5) make variables are:

       EXTSRCSRCDIR, MKBFD, MKCRYPTO, MKEXTSRC, MKKDEBUG, MKKERBEROS4,
       MKLLD, MKLLDB, MKMCLINKER, MKPERFUSE, MKTOOLSDEBUG, NBUILDJOBS,
       SHAREDSTRINGS, USE_COMBINE, USE_NEW_TOOLCHAIN.

Notable variables documented in mk.conf(5) and duplicated here:

DESTDIR         Directory to contain the built NetBSD system.  If set,
               special options are passed to the compilation tools to
               prevent their default use of the host system's
               /usr/include, /usr/lib, and so forth.  This pathname must
               be an absolute path, and should not end with a slash (/)
               character.  (For installation into the system's root
               directory, set DESTDIR to an empty string, not to "/").
               The directory must reside on a file system which supports
               long file names and hard links.

               Note: build.sh will provide a default of
               "destdir.MACHINE" (in the top-level .OBJDIR) unless run
               in `expert' mode with the -E option.

               Default: Empty string if USETOOLS=yes; otherwise unset.

RELEASEDIR      If set, specifies the directory to which a release(7)
               layout will be written at the end of a "make release".
               If specified, must be an absolute path.

               Note: build.sh will provide a default of "releasedir" (in
               the top-level .OBJDIR) unless run in `expert' mode with
               the -E option.

               Default: Unset.

COPTS.lib<lib>
OBJCOPTS.lib<lib>
LDADD.lib<lib>
CPPFLAGS.lib<lib>
CXXFLAGS.lib<lib>
COPTS.<prog>
OBJCOPTS.<prog>
LDADD.<prog>
CPPFLAGS.<prog>
CXXFLAGS.<prog> These provide a way to specify additions to the associated
               variables in a way that applies only to a particular library
               or program.  <lib> corresponds to the LIB variable set in
               the library's makefile.  <prog> corresponds to either PROG
               or PROG_CXX (if set).  For example, if COPTS.libcrypto is
               set to "-g", "-g" will be added to COPTS only when compiling
               the crypto library.
               See bsd.prog.mk below for more details about these variables.

The active compiler is selected using the following variables:
AVAILABLE_COMPILER
               List of available compiler suites.  Processed in order
               for selecting the active compiler for each frontend.
HAVE_PCC        If defined, PCC is present and enabled.
HAVE_LLVM       If defined, LLVM/Clang is present and enabled.
UNSUPPORTED_COMPILER.<comp>
               If defined, the support for compiler <comp> is disabled.

For the frontends (CC, CPP, CXX, FC and OBJC) the following variables exist:
ACTIVE_CC       Active compile suite for the CC frontend.
SUPPORTED_CC    Compile suite with support for the CC frontend.
TOOL_CC.<comp>  Path to the CC frontend for compiler <comp>.


=-=-=-=-=   Variables for a Makefile   =-=-=-=-=

If the following varialbes are defined in the Makefile before
any make(1) .include directives, they force the specific behavior.

NOCOMPAT        Force MKCOMPAT=no.
NOCTF           Force MKCTF=no.
NODEBUG         Force MKDEBUG=no.
NODEBUGLIB      Force MKDEBUGLIB=no.
NODOC           Force MKDOC=no.
NOFORT          Force USE_FORT=no.
NOHTML          Force MKHTML=no.
NOINFO          Force MKINFO=no.
NOLIBCSANITIZER Force MKLIBCSANITIZER=no (and USE_LIBCSANITIZER=no)
NOLINKLIB       Force MKLINKLIB=no.
NOLINT          Force MKLINT=no.
NOMAN           Force MKMAN=no.
NOMANDOC        Force MKMANDOC=no.
NONLS           Force MKNLS=no.
NOOBJ           Force MKOBJ=no.
NOPIC           Force MKPIC=no.
NOPICINSTALL    Force MKPICINSTALL=no.
NOPIE           Force MKPIE=no.
NOPROFILE       Force MKPROFILE=no.
NORELRO         Force MKREPRO=no.
NOSANITIZER     Force MKSANITIZER=no (and USE_SANITIZER=no)
NOSHARE         Force MKSHARE=no.
NOSSP           Force USE_SSP=no.
NOSTATICLIB     Force MKSTATICLIB=no.

Special variations:

NOFULLRELRO!=no Force MKRELRO=no if MKRELRO=full

TODO: NOFULLRELRO should just be a defined test for consistency.


=-=-=-=-=   sys.mk   =-=-=-=-=

The include file <sys.mk> has the default rules for all makes, in the BSD
environment or otherwise.  You probably don't want to touch this file.

=-=-=-=-=   bsd.own.mk   =-=-=-=-=

The include file <bsd.own.mk> contains source tree configuration parameters,
such as the owners, groups, etc. for both manual pages and binaries, and
a few global "feature configuration" parameters.

It has no targets.

To get system-specific configuration parameters, <bsd.own.mk> will try to
include the mk.conf(5) file specified by the MAKECONF variable, which may
be either set in the environment or provided on the make(1) command line.
MAKECONF defaults to /etc/mk.conf.  mk.conf(5) may define any of the
variables described below.

<bsd.own.mk> sets the following variables, if they are not already defined
(defaults are in brackets):

NETBSDSRCDIR    The path to the top level of the NetBSD sources.
               If _SRC_TOP_ != "", that will be used as the default,
               otherwise BSDSRCDIR will be used as the default.
               Various makefiles within the NetBSD source tree will
               use this to reference the top level of the source tree.
               Default: Top level of the NetBSD source tree (as
               determined by the presence of build.sh and tools/) if
               make(1) is run from within that tree; otherwise BSDSRCDIR
               will be used.

_SRC_TOP_       Top of the system source tree, as determined by <bsd.own.mk>
               based on the presence of tools/ and build.sh.  This variable
               is "internal" to <bsd.own.mk>, although its value is only
               determined once and then propagated to all sub-makes.

_NETBSD_VERSION_DEPENDS
               A list of files which contain information about
               the version of the NetBSD being built.  This is
               defined only if the current directory appears
               to be inside a NetBSD source tree.  The list of
               files includes ${NETBSDSRCDIR}/sys/sys/param.h
               (which contains the kernel version number),
               ${NETBSDSRCDIR}/sys/conf/newvers.sh and
               ${NETBSDSRCDIR}/sys/conf/osrelease.sh (which
               interpret the information in sys/sys/param.h), and
               ${_SRC_TOP_OBJ_}/params (which is an optional file,
               created by "make build" in ${_SRC_TOP_}/Makefile,
               containing all the variables that may influence the
               build).

               Targets that depend on the NetBSD version, or on
               variables defined at build time, can declare a
               dependency on ${_NETBSD_VERSION_DEPENDS}, like this:

                       version.c: ${_NETBSD_VERSION_DEPENDS}
                               commands to create version.c

BSDSRCDIR       The real path to the NetBSD source tree, if NETBSDSRCDIR
               isn't defined.
               Default: "/usr/src".

BSDOBJDIR       The real path to the object directory tree for the NetBSD
               source tree.
               Default: "/usr/obj".

BINGRP          Binary group.  [wheel]

BINOWN          Binary owner.  [root]

BINMODE         Binary mode.  [555]

NONBINMODE      Mode for non-executable files.  [444]

MANDIR          Base path for manual installation.  [/usr/share/man/cat]

MANGRP          Manual group.  [wheel]

MANOWN          Manual owner.  [root]

MANMODE         Manual mode.  [${NONBINMODE}]

MANINSTALL      Manual installation type.  Space separated list:
                       catinstall, htmlinstall, maninstall
               Default value derived from MKCATPAGES and MKHTML.

MAKELINKLIB     Defaults to ${MKLINKLIB} but can be overridden by Makefiles

MAKESTATICLIB   Defaults to ${MKSTATICLIB} but can be overridden by Makefiles

LDSTATIC        Control program linking; if set blank, link everything
               dynamically.  If set to "-static", link everything statically.
               If not set, programs link according to their makefile.

LIBDIR          Base path for library installation.  [/usr/lib]

LINTLIBDIR      Base path for lint(1) library installation.  [/usr/libdata/lint]

LIBGRP          Library group.  [${BINGRP}]

LIBOWN          Library owner.  [${BINOWN}]

LIBMODE         Library mode.  [${NONBINMODE}]

LINKINSTALL     Install libraries used by users to link against (.a/.so)
               defaults to ${MAKELINKLIB}

DOCDIR          Base path for system documentation (e.g. PSD, USD, etc.)
               installation.  [/usr/share/doc]

DOCGRP          Documentation group.  [wheel]

DOCOWN          Documentation owner.  [root]

DOCMODE         Documentation mode.  [${NONBINMODE}]

GZIP_N_FLAG     Options to pass to TOOL_GZIP to prevent it from inserting
               file names or timestamps in the compressed output.
               [-n, or -nT when TOOL_GZIP is really TOOL_PIGZ]

NLSDIR          Base path for Native Language Support files installation.
               [/usr/share/nls]

NLSGRP          Native Language Support files group.  [wheel]

NLSOWN          Native Language Support files owner.  [root]

NLSMODE         Native Language Support files mode.  [${NONBINMODE}]

X11SRCDIR       Directory containing the modular Xorg source.  If
               specified, must be an absolute path.  The main modular
               Xorg source is found in ${X11SRCDIR}/external/mit.

               Default: ${NETBSDSRCDIR}/../xsrc, if that exists; otherwise
               "/usr/xsrc".

X11SRCDIR.local The path to the local X11 src tree.  [${X11SRCDIR}/local]

X11SRCDIR.lib<package>
X11SRCDIR.<package>
               The path to the xorg src tree for the specified package>.
               [${X11SRCDIR}/external/mit/xorg/<package>/dist]

X11ROOTDIR      Root directory of the X11 installation.  [/usr/X11R7]

X11BINDIR       X11 bin directory.  [${X11ROOTDIR}/bin]

X11FONTDIR      X11 font directory.  [${X11ROOTDIR}/lib/X11/fonts]

X11INCDIR       X11 include directory.  [${X11ROOTDIR}/include]

X11LIBDIR       X11 lib/x11 (config) directory.  [${X11ROOTDIR}/lib/X11]

X11MANDIR       X11 manual directory.  [${X11ROOTDIR}/man]

X11USRLIBDIR    X11 library directory.  [${X11ROOTDIR}/lib]

STRIPFLAG       The option passed to the install program to cause the binary
               to be stripped.  This is to be used when building your
               own install script so that the entire system can be made
               stripped/not-stripped using a single knob.  []

COPY            The option passed to the install program to cause the binary
               to be copied rather than moved.  This is to be used when
               building our own install script so that the entire system
               can either be installed with copies, or with moves using
               a single knob.  [-c]

MAKEDIRTARGETENV
               Environment variables passed to the child make process
               invoked by MAKEDIRTARGET.

MAKEDIRTARGET dir target [params]
               Runs "cd $${dir} && ${MAKE} [params] $${target}",
               displaying a "pretty" message whilst doing so.

RELEASEMACHINEDIR
               Subdirectory used below RELEASEDIR when building
               a release.  [${MACHINE},
               or ${MACHINE}-${MACHINE_ARCH} for evb{arm,mips,sh3}*]

RELEASEMACHINE  Subdirectory or path component used for the following
               paths:
                       distrib/${RELEASEMACHINE}
                       distrib/notes/${RELEASEMACHINE}
                       etc/etc.${RELEASEMACHINE}
               Used when building a release.  [${MACHINE}]

Additionally, the following variables may be set by <bsd.own.mk> or in a
make configuration file to modify the behavior of the system build
process (default values are in brackets along with comments, if set by
<bsd.own.mk>):

USETOOLS        Can be set to "yes" or "no".  Indicates whether the tools
               specified by ${TOOLDIR} should be used as part of a build in
               progress. Must be set to "yes" if cross-compiling.
               Supported values:

               yes     Use the tools from TOOLDIR.

               no      Do not use the tools from TOOLDIR, but refuse to
                       build native compilation tool components that are
                       version-specific for that tool.

               never   Do not use the tools from TOOLDIR, even when
                       building native tool components.  This is similar to
                       the traditional NetBSD build method, but does not
                       verify that the compilation tools in use are
                       up-to-date enough in order to build the tree
                       successfully.  This may cause build or runtime
                       problems when building the whole NetBSD source tree.

               Default: "no" when using <bsd.*.mk> outside the NetBSD
               source tree (detected automatically) or if
               TOOLCHAIN_MISSING=yes; otherwise "yes".

OBJECT_FMT      Object file format.  [set to "ELF" on architectures that
               use ELF -- currently all architectures].

TOOLCHAIN_MISSING
               Can be set to "yes" or "no".  If not "no", this
               indicates that the platform "MACHINE_ARCH" being built
               does not have a working in-tree toolchain.
               If the ${MACHINE_ARCH} in question falls into this category,
               TOOLCHAIN_MISSING is conditionally assigned the value "yes".
               Otherwise, the variable is unconditionally assigned the
               value "no".

               If not "no", acts as MKBINUTILS=no MKGCC=no MKGDB=no.

               Default: "no".

EXTERNAL_TOOLCHAIN
               This variable is not directly set by <bsd.own.mk>, but
               including <bsd.own.mk> is the canonical way to gain
               access to this variable.  The variable should be defined
               either in the user's environment or in the user's mk.conf(5)
               file.

               If defined, this variable indicates the root directory of
               an external toolchain which will be used to build the
               tree.  For example, if a platform is a ${TOOLCHAIN_MISSING}
               platform, EXTERNAL_TOOLCHAIN can be used to re-enable the
               cross-compile framework.

               If EXTERNAL_TOOLCHAIN is defined, act as MKGCC=no, since
               the external version of the compiler may not be able to build
               the library components of the in-tree compiler.

               This variable should be used in conjunction with an
               appropriate HAVE_GCC or HAVE_LLVM setting to control the
               compiler options.

               Note: This variable is not yet used in as many places as
               it should be.  Expect the exact semantics of this variable
               to change in the short term as parts of the cross-compile
               framework continue to be cleaned up.

The following variables are defined to commands to perform the
appropriate operation, with the default in [brackets].  Note that
the defaults change if USETOOLS == "yes":

TOOL_AMIGAAOUT2BB       aout to Amiga bootblock converter.  [amiga-aout2bb]

TOOL_AMIGAELF2BB        ELF to Amiga bootblock converter.  [amiga-elf2bb]

TOOL_AMIGATXLT          Amiga assembly language format translator.  [amiga-txlt]

TOOL_ARMELF2AOUT        ELF to a.out executable converter [arm-elf2aout}

TOOL_ASN1_COMPILE       ASN1 compiler.  [asn1_compile]

TOOL_AWK                Pattern-directed scanning/processing language.  [awk]

TOOL_CAP_MKDB           Create capability database.  [cap_mkdb]

TOOL_CAT                Concatenate and print files.  [cat]

TOOL_CKSUM              Display file checksums.  [cksum]

TOOL_COMPILE_ET         Error table compiler.  [compile_et]

TOOL_CONFIG             Build kernel compilation directories.  [config]

TOOL_CRUNCHGEN          Generate crunched binary build environment.  [crunchgen]

TOOL_CTAGS              Create a tags file.  [ctags]

TOOL_DB                 Manipulate db(3) databases.  [db]

TOOL_DISKLABEL          Read and write disk pack label.  [disklabel]

TOOL_EQN                Format equations for groff.  [eqn]

TOOL_FDISK              MS-DOS partition maintenance program.  [fdisk]

TOOL_FGEN               IEEE 1275 Open Firmware FCode Tokenizer.  [fgen]

TOOL_GENASSYM           Generate constants for assembly files.  [genassym]

TOOL_GENCAT             Generate NLS message catalogs.  [gencat]

TOOL_GMAKE              GNU make utility.  [gmake]

TOOL_GREP               Print lines matching a pattern.  [grep]

TOOL_GROFF              Front end for groff document formatting system.  [groff]

TOOL_GZIP               Compression/decompression tool.  [gzip]

TOOL_GZIP_N             Same as TOOL_GZIP, plus a command line option to
                       prevent it from inserting file names or timestamps
                       into the compressed output.
                       [${TOOL_GZIP} ${GZIP_N_FLAG}]

TOOL_HEXDUMP            Ascii, decimal, hexadecimal, octal dump.  [hexdump]

TOOL_HP300MKBOOT        Make bootable image for hp300.  [hp300-mkboot]

TOOL_HPPAMKBOOT         Make bootable image for hppa.  [hppa-mkboot]

TOOL_INDXBIB            Make bibliographic database's inverted index.  [indxbib]

TOOL_INSTALLBOOT        Install disk bootstrap software.  [installboot]

TOOL_INSTALL_INFO       Update info/dir entries.  [install-info]

TOOL_JOIN               Relational database operator.  [join]

TOOL_M4                 M4 macro language processor.  [m4]

TOOL_M68KELF2AOUT       ELF to a.out executable converter [m68k-elf2aout}

TOOL_MACPPCFIXCOFF      Fix up xcoff headers for macppc.  [macppc-fixcoff]

TOOL_MAKEFS             Create file system image from directory tree.  [makefs]

TOOL_MAKEINFO           Translate Texinfo documents.  [makeinfo]

TOOL_MAKEWHATIS         Create a whatis.db database.  [makewhatis]

TOOL_MDSETIMAGE         Set kernel RAM disk image.  [mdsetimage]

TOOL_MENUC              Menu compiler.  [menuc]

TOOL_MIPSELF2ECOFF      Convert ELF-format executable to ECOFF for mips.
                       [mips-elf2ecoff]

TOOL_MKCSMAPPER         Make charset mapping table.  [mkcsmapper]

TOOL_MKESDB             Make encoding scheme database.  [mkesdb]

TOOL_MKLOCALE           Make LC_CTYPE locale files.  [mklocale]

TOOL_MKMAGIC            Create database for file(1).  [file]

TOOL_MKNOD              Make device special file.  [mknod]

TOOL_MKTEMP             Make (unique) temporary file name.  [mktemp]

TOOL_MSGC               Simple message list compiler.  [msgc]

TOOL_MTREE              Map a directory hierarchy.  [mtree]

TOOL_NCDCS              Turn ELF kernel into a NCD firmware image. [ncdcs]

TOOL_PAX                Manipulate file archives and copy directories.  [pax]

TOOL_PIC                Compile pictures for groff.  [pic]

TOOL_PIGZ               Parallel compressor.  [pigz]

TOOL_POWERPCMKBOOTIMAGE Make bootable image for powerpc.  [powerpc-mkbootimage]

TOOL_PWD_MKDB           Generate the password databases.  [pwd_mkdb]

TOOL_REFER              Preprocess bibliographic references for groff.  [refer]

TOOL_ROFF_ASCII         Generate ASCII groff output.  [nroff]

TOOL_ROFF_DVI           Generate DVI groff output.  [${TOOL_GROFF} -Tdvi]

TOOL_ROFF_HTML          Generate HTML groff output.
                       [${TOOL_GROFF} -Tlatin1 -mdoc2html]

TOOL_ROFF_PS            Generate PS groff output.  [${TOOL_GROFF} -Tps]

TOOL_ROFF_RAW           Generate "raw" groff output.  [${TOOL_GROFF} -Z]

TOOL_RPCGEN             Remote Procedure Call (RPC) protocol compiler.  [rpcgen]

TOOL_SED                Stream editor.  [sed]

TOOL_SOELIM             Eliminate .so's from groff input.  [soelim]

TOOL_SPARKCRC           Generate a crc suitable for use in a sparkive file.
                       [sparkcrc]

TOOL_STAT               Display file status.  [stat]

TOOL_STRFILE            Create a random access file for storing strings.
                       [strfile]

TOOL_SUNLABEL           Read or modify a SunOS disk label.  [sunlabel]

TOOL_TBL                Format tables for groff.  [tbl]

TOOL_UUDECODE           Uudecode a binary file.  [uudecode]

TOOL_VAXMOPCOPY         Creates a MOP image from another executable format.
                       [vax-mopcopy]

TOOL_VGRIND             Grind nice listings of programs.  [vgrind -f]

TOOL_ZIC                Time zone compiler.  [zic]

For each possible value of MACHINE_CPU, MACHINES.${MACHINE_CPU} contain a
list of what ports can be built for it.  This keeps those definitions in
centralized place.

<bsd.own.mk> is generally useful when building your own Makefiles so that
they use the same default owners etc. as the rest of the tree.


=-=-=-=-=   bsd.clean.mk   =-=-=-=-=

The include file <bsd.clean.mk> defines the clean and cleandir
targets.  It uses the following variables:

CLEANFILES      Files to remove for both the clean and cleandir targets.

CLEANDIRFILES   Files to remove for the cleandir target, but not for
               the clean target.

MKCLEANSRC      Controls whether or not the clean and cleandir targets
               will delete files from both the object directory,
               ${.OBJDIR}, and the source directory, ${.CURDIR}.

               If MKCLEANSRC is set to "no", then the file names in
               CLEANFILES or CLEANDIRFILES are interpreted relative
               to the object directory, ${.OBJDIR}.  This is the
               traditional behaviour.

               If MKCLEANSRC is set to "yes", then the file deletion
               is performed relative to both the object directory,
               ${.OBJDIR}, and the source directory, ${.CURDIR}.  (This
               has no effect if ${.OBJDIR} is the same as ${.CURDIR}.)
               Deleting files from ${.CURDIR} is intended to remove
               stray output files that had been left in the source
               directory by an earlier build that did not use object
               directories.

               The default is MKCLEANSRC=yes.  If you always build with
               separate object directories, and you are sure that there
               are no stray files in the source directories, then you
               may set MKCLEANSRC=no to save some time.

MKCLEANVERIFY   Controls whether or not the clean and cleandir targets
               will verify that files have been deleted.

               If MKCLEANVERIFY is set to "no", then the files will
               be deleted using a "rm -f" command, and its success or
               failure will be ignored.

               If MKCLEANVERIFY is set to "yes", then the success of
               the "rm -f" command will be verified using an "ls"
               command.

               The default is MKCLEANVERIFY=yes.  If you are sure that
               there will be no problems caused by file permissions,
               read-only file systems, or the like, then you may set
               MKCLEANVERIFY=no to save some time.

To use the clean and cleandir targets defined in <bsd.clean.mk>, other
Makefiles or bsd.*.mk files should append file names to the CLEANFILES
or CLEANDIRFILES variables.  For example:

           CLEANFILES+= a.out
           CLEANDIRFILES+= .depend

           .include <bsd.clean.mk>

The files listed in CLEANFILES and CLEANDIRFILES must not be
directories, because the potential risk from running "rm -rf" commands
in bsd.clean.mk is considered too great.  If you want to recursively
delete a directory as part of "make clean" or "make cleandir" then you
need to provide your own target.

=-=-=-=-=   bsd.dep.mk   =-=-=-=-=

The include file <bsd.dep.mk> contains the default targets for building
depend files.  It creates .d files from entries in SRCS and DPSRCS
that are C, C++, or Objective C source files, and builds .depend from the
d files.  All other files in SRCS and all of DPSRCS will be used as
dependencies for the .d files.  In order for this to function correctly,
it should be .included after all other .mk files and directives that may
modify SRCS or DPSRCS.  It uses the following variables:

SRCS            List of source files to build the program.

DPSRCS          List of source files which are needed for generating
               dependencies, but are not needed in ${SRCS}.

NODPSRCS        TODO

=-=-=-=-=   bsd.files.mk   =-=-=-=-=

The include file <bsd.files.mk> handles the FILES variables and is included
from <bsd.lib.mk> and <bsd.prog.mk>, and uses the following variables:

FILES           The list of files to install.

CONFIGFILES     Similar semantics to FILES, except that the files
               are installed by the `configinstall' target,
               not the `install' target.
               The FILES* variables documented below also apply.

FILESOWN        File owner.  [${BINOWN}]

FILESGRP        File group.  [${BINGRP}]

FILESMODE       File mode.  [${NONBINMODE}]

FILESDIR        The location to install the files.

FILESNAME       Optional name to install each file as.

FILESOWN_<fn>   File owner of the specific file <fn>.

FILESGRP_<fn>   File group of the specific file <fn>.

FILESMODE_<fn>  File mode of the specific file <fn>.

FILESDIR_<fn>   The location to install the specific file <fn>.

FILESNAME_<fn>  Optional name to install <fn> as.

FILESBUILD      If this variable is defined, then its value will be
               used as the default for all FILESBUILD_<fn> variables.
               Otherwise, the default will be "no".

FILESBUILD_<fn> A value different from "no" will add the file to the list of
               targets to be built by `realall'.  Users of that variable
               should provide a target to build the file.


BUILDSYMLINKS   List of two word items:
                       lnsrc lntgt
               For each lnsrc item, create a symlink named lntgt.
               The lntgt symlinks are removed by the cleandir target.

UUDECODE_FILES  List of files which are stored as <file>.uue in the source
               tree. Each one will be decoded with ${TOOL_UUDECODE}.
               The source files have a `.uue' suffix, the generated files do
               not.

UUDECODE_FILES_RENAME_<fn>
               Rename the output from the decode to the provided name.

               Note: These files are simply decoded, with no install or other
               rule applying implicitly except being added to the clean
               target.

=-=-=-=-=   bsd.gcc.mk   =-=-=-=-=

The include file <bsd.gcc.mk> computes various parameters related to GCC
support libraries.  It defines no targets.  <bsd.own.mk> MUST be included
before <bsd.gcc.mk>.

The primary users of <bsd.gcc.mk> are <bsd.prog.mk> and <bsd.lib.mk>, each
of which need to know where to find certain GCC support libraries.

The behavior of <bsd.gcc.mk> is influenced by the EXTERNAL_TOOLCHAIN variable,
which is generally set by the user.  If EXTERNAL_TOOLCHAIN it set, then
the compiler is asked where to find the support libraries, otherwise the
support libraries are found in ${DESTDIR}/usr/lib.

<bsd.gcc.mk> sets the following variables:

_GCC_CRTBEGIN   The full path name to crtbegin.o.

_GCC_CRTBEGINS  The full path name to crtbeginS.o.

_GCC_CRTEND     The full path name to crtend.o.

_GCC_CRTENDS    The full path name to crtendS.o.

_GCC_LIBGCCDIR  The directory where libgcc.a is located.


=-=-=-=-=   bsd.inc.mk   =-=-=-=-=

The include file <bsd.inc.mk> defines the includes target and uses the
variables:

INCS            The list of include files.

INCSDIR         The location to install the include files.

INCSNAME        Target name of the include file, if only one; same as
               FILESNAME, but for include files.

INCSYMLINKS     Similar to SYMLINKS in <bsd.links.mk>, except that these
               are installed in the 'includes' target and not the
               (much later) 'install' target.

INCSNAME_<file> The name file <file> should be installed as, if not <file>,
               same as FILESNAME_<file>, but for include files.


=-=-=-=-=   bsd.info.mk   =-=-=-=-=

The include file <bsd.info.mk> is used to generate and install GNU Info
documentation from respective Texinfo source files.  It defines three
implicit targets (.txi.info, .texi.info, and .texinfo.info), and uses the
following variables:

TEXINFO         List of Texinfo source files.  Info documentation will
               consist of single files with the extension replaced by
               .info.

INFOFLAGS       Options to pass to makeinfo.  []


=-=-=-=-=   bsd.kernobj.mk   =-=-=-=-=

The include file <bsd.kernobj.mk> defines variables related to the
location of kernel sources and object directories.

KERNSRCDIR      Directory at the top of the kernel source..
               [${NETBSDSRCDIR}/sys]

KERNARCHDIR     Directory under KERNSRCDIR containing the machine
               dependent kernel sources.
               [arch/${MACHINE}]

KERNCONFDIR     Directory containing the kernel configuration files.
               [${KERNSRCDIR}/${KERNARCHDIR}/conf]

KERNOBJDIR      Directory for kernel builds.  For example, the kernel
               GENERIC will be compiled in KERNOBJDIR/GENERIC.
               Default:
               ${MAKEOBJDIRPREFIX}${KERNSRCDIR}/${KERNARCHDIR}/compile
               if it exists or the make(1) target 'obj' is being made;
               otherwise ${KERNSRCDIR}/${KERNARCHDIR}/compile.

It is important that Makefiles (such as those under src/distrib) that
wish to find compiled kernels use <bsd.kernobj.mk> and ${KERNOBJDIR}
rather than make assumptions about the location of the compiled kernel.


=-=-=-=-=   bsd.kinc.mk   =-=-=-=-=

The include file <bsd.kinc.mk> defines the many targets (includes,
subdirectories, etc.), and is used by kernel makefiles to handle
include file installation.  It is intended to be included alone, by
kernel Makefiles.  It uses similar variables to <bsd.inc.mk>.
Please see <bsd.kinc.mk> for more details, and keep the documentation
in that file up to date.

=-=-=-=-=   bsd.syscall.mk =-=-=-=-=

The include file <bsd.syscall.mk> contains the logic to create syscall
files for various emulations. It includes <bsd.kinc.mk> to handle the
rest of the targets.

=-=-=-=-=   bsd.lib.mk   =-=-=-=-=

The include file <bsd.lib.mk> has support for building libraries.  It has
the same eight targets as <bsd.prog.mk>: all, clean, cleandir, depend,
includes, install, lint, and tags.  Additionally, it has a checkver target
which checks for installed shared object libraries whose version is greater
that the version of the source. It has a limited number of suffixes,
consistent with the current needs of the BSD tree.  <bsd.lib.mk> includes
<bsd.shlib.mk> to get shared library parameters.

It sets/uses the following variables:

LIB             The name of the library to build.

LIBDIR          Target directory for libraries.

SHLIBINSTALLDIR Target directory for shared libraries if ${USE_SHLIBDIR}
               is not "no".

SHLIB_MAJOR
SHLIB_MINOR
SHLIB_TEENY     Major, minor, and teeny version numbers of shared library

USE_SHLIBDIR    If not "no", use ${SHLIBINSTALLDIR} instead of ${LIBDIR}
               as the path to install shared libraries to.
               USE_SHLIBDIR must be defined before <bsd.own.mk> is included.
               Default: no

LIBISMODULE     If not "no", install as ${LIB}.so (without the "lib" prefix),
               and act as "MKDEBUGLIB=no MKPICINSTALL=no MKPROFILE=no
               MKSTATICLIB=no". Also do not install the lint library.
               Default: no

LIBISPRIVATE    If not "no", act as "MKDEBUGLIB=no MKPIC=no MKPROFILE=no",
               and don't install the (.a) library or the lint library.
               This is useful for "build only" helper libraries.
               If set to "pic", then a _pic.a library is also produced,
               so that it can be incorporated into other shared objects.
               Default: no

LIBISCXX        If not "no", Use ${CXX} instead of ${CC} to link
               shared libraries.
               This is useful for C++ libraries.
               Default: no

LINTLIBDIR      Target directory for lint libraries.

LIBGRP          Library group.

LIBOWN          Library owner.

LIBMODE         Library mode.

LDADD           Additional loader objects.

MAN             The manual pages to be installed (use a .1 - .9 suffix).

NOCHECKVER_<library>
NOCHECKVER      If set, disables checking for installed shared object
               libraries with versions greater than the source.  A
               particular library name, without the "lib" prefix, may
               be appended to the variable name to disable the check for
               only that library.

SRCS            List of source files to build the library.  Suffix types
               .s, .c, and .f are supported.  Note, .s files are preferred
               to .c files of the same name.  (This is not the default for
               versions of make.)

LIBDPLIBS/
PROGDPLIBS      A list of the tuples:
                       libname  path-to-srcdir-of-libname

               Instead of depending on installed versions of the libraries,
               one can depend on their built version in the source directory.
               This is useful for finding private libraries (LIBISPRIVATE).

               For each tuple;
                    *  LIBDO.libname contains the .OBJDIR of the library
                       `libname', and if it is not set it is determined
                       from the srcdir and added to MAKEOVERRIDES (the
                       latter is to allow for build time optimization).
                    *  LDADD gets  -L${LIBDO.libname} -llibname    added.
                    *  DPADD gets  ${LIBDO.libname}/liblibname.so  or
                                   ${LIBDO.libname}/liblibname.a   added.

               The special value "_external" for LIBDO.lib makes the
               build system to assume the library comes from outside
               of the NetBSD source tree and only causes -llibname
               to be added to LDADD.

               This variable may be used for individual libraries/programs,
               as well as in parent directories to cache common libraries
               as a build-time optimization.

LIB_EXPSYM      File listing all symbols expected to be defined by the
               library.  Each line has a single symbol.  If the symbol
               is versioned, it is followed by `@@', if it is the
               default version, or `@', if not, and the symbol
               version.  The lines must be sorted in LANG=C.

               bsd.lib.mk checks to make sure exactly the set of
               symbols in this file is defined when the library is
               built; if not, the build will fail and print a diff
               from the expected symbols to the actual symbols.
               During development, you can update the expected symbols
               from the actual ones with `make update-symbols'.

VERSION_MAP     Path to an ld version script to use when linking the
               library.  Resolved from .PATH like a target
               prerequisite.


The include file <bsd.lib.mk> includes the file named "../Makefile.inc"
if it exists, as well as the include file <bsd.man.mk>.

It has rules for building profiled objects; profiled libraries are
built by default.

Libraries are ranlib'd when made.


=-=-=-=-=   bsd.links.mk   =-=-=-=-=

The include file <bsd.links.mk> handles the LINKS and SYMLINKS variables
and is included from <bsd.lib.mk> and <bsd.prog.mk>.

LINKSOWN, LINKSGRP, and LINKSMODE, are relevant only if a metadata log
is used. The defaults may be modified by other bsd.*.mk files which
include bsd.links.mk.  In the future, these variables may be replaced
by a method for explicitly recording hard links in a metadata log.

LINKS           The list of hard links, consisting of pairs of paths:
                       source-file target-file
               ${DESTDIR} is prepended to both paths before linking.
               For example, to link /bin/test and /bin/[, use:
                       LINKS=/bin/test /bin/[

CONFIGLINKS     Similar semantics to LINKS, except that the links
               are installed by the `configinstall' target,
               not the `install' target.

SYMLINKS        The list of symbolic links, consisting of pairs of paths:
                       source-file target-file
               ${DESTDIR} is only prepended to target-file before linking.
               For example, to symlink /usr/bin/tar to /bin/tar resulting
               in ${DESTDIR}/usr/bin/tar -> /bin/tar:
                       SYMLINKS=/bin/tar /usr/bin/tar

CONFIGSYMLINKS  Similar semantics to SYMLINKS, except that the symbolic links
               are installed by the `configinstall' target,
               not the `install' target.

LINKSOWN        Link owner.  [${BINOWN}]

LINKSGRP        Link group.  [${BINGRP}]

LINKSMODE       Link mode.  [${NONBINMODE}]

LINKSOWN_<fn>   Link owner of the specific file <fn>.

LINKSGRP_<fn>   Link group of the specific file <fn>.

LINKSMODE_<fn>  Link mode of the specific file <fn>.


=-=-=-=-=   bsd.man.mk   =-=-=-=-=

The include file <bsd.man.mk> handles installing manual pages and their
links.

It has a three targets:

       catinstall:
               Install the preformatted manual pages and their links.
       htmlinstall:
               Install the HTML manual pages and their links.
       maninstall:
               Install the manual page sources and their links.

It sets/uses the following variables:

MANDIR          Base path for manual installation.

MANGRP          Manual group.

MANOWN          Manual owner.

MANMODE         Manual mode.

MANSUBDIR       Subdirectory under the manual page section, i.e. "/vax"
               or "/tahoe" for machine specific manual pages.

MAN             The manual pages to be installed (use a .1 - .9 suffix).

MLINKS          List of manual page links (using a .1 - .9 suffix).  The
               linked-to file must come first, the linked file second,
               and there may be multiple pairs.

The include file <bsd.man.mk> includes a file named "../Makefile.inc" if
it exists.


=-=-=-=-=   bsd.obj.mk   =-=-=-=-=

The include file <bsd.obj.mk> defines targets related to the creation
and use of separated object and source directories.

If an environment variable named MAKEOBJDIRPREFIX is set, make(1) uses
${MAKEOBJDIRPREFIX}${.CURDIR} as the name of the object directory if
it exists.  Otherwise make(1) looks for the existence of a
subdirectory (or a symlink to a directory) of the source directory
into which built targets should be placed.  If an environment variable
named MAKEOBJDIR is set, make(1) uses its value as the name of the
object directory; failing that, make first looks for a subdirectory
named "obj.${MACHINE}", and if that doesn't exist, it looks for "obj".

Object directories are not created automatically by make(1) if they
don't exist; you need to run a separate "make obj".  (This will happen
during a top-level build if "MKOBJDIRS" is set to a value other than
"no").  When the source directory is a subdirectory of ${BSDSRCDIR} --
and this is determined by a simple string prefix comparison -- object
directories are created in a separate object directory tree, and a
symlink to the object directory in that tree is created in the source
directory; otherwise, "make obj" assumes that you're not in the main
source tree and that it's not safe to use a separate object tree.

Several variables used by <bsd.obj.mk> control exactly what
directories and links get created during a "make obj":

MAKEOBJDIR      If set, this is the component name of the object
               directory.

OBJMACHINE      If this is set but MAKEOBJDIR is not set, creates
               object directories or links named "obj.${MACHINE}";
               otherwise, just creates ones named "obj".

OBJMACHINE_ARCH If set with OBJMACHINE, creates object directories or
               links named "obj.${MACHINE}-${MACHINE_ARCH}".

USR_OBJMACHINE  If set, and the current directory is a subdirectory of
               ${BSDSRCDIR}, create object directory in the
               corresponding subdirectory of ${BSDOBJDIR}.${MACHINE};
               otherwise, create it in the corresponding subdirectory
               of ${BSDOBJDIR}

BUILDID         Identifier for the build.  If set, this should be a short
               string that is suitable for use as part of a file or
               directory name.  The identifier will be appended to
               object directory names; if OBJMACHINE is also set, then
               .BUILDID is appended after .MACHINE.  The identifier will
               also be used as part of the kernel version string, which
               can be shown by “uname -v”.

               Default: Unset.


=-=-=-=-=   bsd.prog.mk   =-=-=-=-=

The include file <bsd.prog.mk> handles building programs from one or
more source files, along with their manual pages.  It has a limited number
of suffixes, consistent with the current needs of the BSD tree.
<bsd.prog.mk> includes <bsd.shlib.mk> to get shared library parameters.

It has eight targets:

       all:
               build the program and its manual page.  This also
               creates a GDB initialization file (.gdbinit) in
               the objdir.  The .gdbinit file sets the shared library
               prefix to ${DESTDIR} to facilitate cross-debugging.
       clean:
               remove the program, any object files and the files a.out,
               Errs, errs, mklog, and ${PROG}.core.
       cleandir:
               remove all of the files removed by the target clean, as
               well as .depend, tags, and any manual pages.
               `distclean' is a synonym for `cleandir'.
       depend:
               make the dependencies for the source files, and store
               them in the file .depend.
       includes:
               install any header files.
       install:
               install the program and its manual pages; if the Makefile
               does not itself define the target install, the targets
               beforeinstall and afterinstall may also be used to cause
               actions immediately before and after the install target
               is executed.
       lint:
               run lint on the source files
       tags:
               create a tags file for the source files.

It sets/uses the following variables:

BINGRP          Binary group.

BINOWN          Binary owner.

BINMODE         Binary mode.

CLEANDIRFILES   Additional files to remove for the cleandir target.

CLEANFILES      Additional files to remove for the clean and cleandir targets.

CONFIGOPTS      Additional options to config(1) when building kernels.

               Default: Unset.

COPTS           Extra options for the C compiler.  Should be appended to
               (e.g., COPTS+=-g), rather than explicitly set.

               Note: CPUFLAGS, not COPTS, should be used for compiler
               options that select CPU-related options.

COPTS.<fn>      Extra options for the C compiler when creating the
               C objects for <fn>.
               For <fn>.[ly], "<fn>.c" must be used.

CPUFLAGS        Additional options passed to the compiler/assembler to
               select CPU instruction set options, CPU tuning options,
               etc.

               Note: Such options should not be specified in COPTS,
               because some parts of the build process need to override
               CPU-related compiler options.

               Default: Unset.

CPUFLAGS.<fn>   Additional options to the compiler/assembler for <fn>.
               For <fn>.[ly], "<fn>.c" must be used.

CPPFLAGS        Additional options to the C pre-processor.

CPPFLAGS.<fn>   Additional options to the C pre-processor for <fn>.
               For <fn>.[ly], "<fn>.c" must be used.

GDBINIT         List of GDB initialization files to add to "source"
               directives in the .gdbinit file that is created in the
               objdir.

LDADD           Additional loader objects.  Usually used for libraries.
               For example, to load with the compatibility and utility
               libraries, use:

                       LDADD+=-lutil -lcompat

LDFLAGS         Additional linker options (passed to ${CC} during link).

LINKS           See <bsd.links.mk>

OBJCOPTS        Additional options to the compiler when creating ObjC objects.

OBJCOPTS.<fn>   Additional options to the compiler when creating the
               ObjC objects for <fn>.
               For <fn>.[ly], "<fn>.c" must be used.

SYMLINKS        See <bsd.links.mk>

MAN             Manual pages (should end in .1 - .9).  If no MAN variable is
               defined, "MAN=${PROG}.1" is assumed.

PAXCTL_FLAGS    If defined, run paxctl(1) on the program binary after link
               time, with the value of this variable as options to paxctl(1).

PAXCTL_FLAGS.${PROG} Custom override for PAXCTL_FLAGS.

PROG            The name of the program to build.  If not supplied, nothing
               is built.

PROG_CXX        If defined, the name of the program to build.  Also
               causes <bsd.prog.mk> to link the program with the C++
               compiler rather than the C compiler.  PROG_CXX overrides
               the value of PROG if PROG is also set.

PROGNAME        The name that the above program will be installed as, if
               different from ${PROG}.

PROGS           Multiple programs to build from a single directory.
               Defaults to PROG. For each program ${_P} in ${PROGS},
               uses SRCS.${_P}, defaulting to ${_P}.c.

PROGS_CXX       Multiple C++ programs to build from a single directory.
               Defaults to PROG_CXX. For each program ${_P} in ${PROGS_CXX},
               uses SRCS.${_P}, defaulting to ${_P}.cc.

SRCS            List of source files to build the program.  If SRCS is not
               defined, it's assumed to be ${PROG}.c or ${PROG_CXX}.cc.

DPSRCS          List of source files which are needed for generating
               dependencies, but are not needed in ${SRCS}.

DPADD           Additional dependencies for the program.  Usually used for
               libraries.  For example, to depend on the compatibility and
               utility libraries use:

                       DPADD+=${LIBCOMPAT} ${LIBUTIL}

               The following system libraries are predefined for DPADD:

               LIBARCHIVE?=            ${DESTDIR}/usr/lib/libarchive.a
               LIBASN1?=               ${DESTDIR}/usr/lib/libasn1.a
               LIBATF_C?=              ${DESTDIR}/usr/lib/libatf-c.a
               LIBATF_CXX?=            ${DESTDIR}/usr/lib/libatf-c++.a
               LIBBLOCKLIST?=          ${DESTDIR}/usr/lib/libblocklist.a
               LIBBLUETOOTH?=          ${DESTDIR}/usr/lib/libbluetooth.a
               LIBBSDMALLOC?=          ${DESTDIR}/usr/lib/libbsdmalloc.a
               LIBBZ2?=                ${DESTDIR}/usr/lib/libbz2.a
               LIBC?=                  ${DESTDIR}/usr/lib/libc.a
               LIBC_PIC?=              ${DESTDIR}/usr/lib/libc_pic.a
               LIBCBOR?=               ${DESTDIR}/usr/lib/libcbor.a
               LIBCOMPAT?=             ${DESTDIR}/usr/lib/libcompat.a
               LIBCOM_ERR?=            ${DESTDIR}/usr/lib/libcom_err.a
               LIBCRYPT?=              ${DESTDIR}/usr/lib/libcrypt.a
               LIBCRYPTO?=             ${DESTDIR}/usr/lib/libcrypto.a
               LIBCURSES?=             ${DESTDIR}/usr/lib/libcurses.a
               LIBCXX?=                ${DESTDIR}/usr/lib/libc++.a
               LIBDES?=                ${DESTDIR}/usr/lib/libdes.a
               LIBDNS?=                ${DESTDIR}/usr/lib/libdns.a
               LIBEDIT?=               ${DESTDIR}/usr/lib/libedit.a
               LIBEVENT?=              ${DESTDIR}/usr/lib/libevent.a
               LIBEVENT_OPENSSL?=      ${DESTDIR}/usr/lib/libevent_openssl.a
               LIBEVENT_PTHREADS?=     ${DESTDIR}/usr/lib/libevent_pthreads.a
               LIBEXECINFO?=           ${DESTDIR}/usr/lib/libexecinfo.a
               LIBEXPAT?=              ${DESTDIR}/usr/lib/libexpat.a
               LIBFETCH?=              ${DESTDIR}/usr/lib/libfetch.a
               LIBFIDO2?=              ${DESTDIR}/usr/lib/libfido2.a
               LIBFL?=                 ${DESTDIR}/usr/lib/libfl.a
               LIBFORM?=               ${DESTDIR}/usr/lib/libform.a
               LIBGCC?=                ${DESTDIR}/usr/lib/libgcc.a
               LIBGNUCTF?=             ${DESTDIR}/usr/lib/libgnuctf.a
               LIBGNUMALLOC?=          ${DESTDIR}/usr/lib/libgnumalloc.a
               LIBGSSAPI?=             ${DESTDIR}/usr/lib/libgssapi.a
               LIBHDB?=                ${DESTDIR}/usr/lib/libhdb.a
               LIBHEIMBASE?=           ${DESTDIR}/usr/lib/libheimbase.a
               LIBHEIMNTLM?=           ${DESTDIR}/usr/lib/libheimntlm.a
               LIBHX500?=              ${DESTDIR}/usr/lib/libhx500.a
               LIBINTL?=               ${DESTDIR}/usr/lib/libintl.a
               LIBIPSEC?=              ${DESTDIR}/usr/lib/libipsec.a
               LIBISC?=                ${DESTDIR}/usr/lib/libisc.a
               LIBISCCC?=              ${DESTDIR}/usr/lib/libisccc.a
               LIBISCFG?=              ${DESTDIR}/usr/lib/libiscfg.a
               LIBKADM5CLNT?=          ${DESTDIR}/usr/lib/libkadm5clnt.a
               LIBKADM5SRV?=           ${DESTDIR}/usr/lib/libkadm5srv.a
               LIBKAFS?=               ${DESTDIR}/usr/lib/libkafs.a
               LIBKRB5?=               ${DESTDIR}/usr/lib/libkrb5.a
               LIBKVM?=                ${DESTDIR}/usr/lib/libkvm.a
               LIBL?=                  ${DESTDIR}/usr/lib/libl.a
               LIBLBER?=               ${DESTDIR}/usr/lib/liblber.a
               LIBLDAP?=               ${DESTDIR}/usr/lib/libldap.a
               LIBLDAP_R?=             ${DESTDIR}/usr/lib/libldap_r.a
               LIBLUA?=                ${DESTDIR}/usr/lib/liblua.a
               LIBM?=                  ${DESTDIR}/usr/lib/libm.a
               LIBMAGIC?=              ${DESTDIR}/usr/lib/libmagic.a
               LIBMENU?=               ${DESTDIR}/usr/lib/libmenu.a
               LIBNETPGPVERIFY?=       ${DESTDIR}/usr/lib/libnetpgpverify.a
               LIBNS?=                 ${DESTDIR}/usr/lib/libns.a
               LIBOBJC?=               ${DESTDIR}/usr/lib/libobjc.a
               LIBOSSAUDIO?=           ${DESTDIR}/usr/lib/libossaudio.a
               LIBPAM?=                ${DESTDIR}/usr/lib/libpam.a
               LIBPANEL?=              ${DESTDIR}/usr/lib/libpanel.a
               LIBPCAP?=               ${DESTDIR}/usr/lib/libpcap.a
               LIBPCI?=                ${DESTDIR}/usr/lib/libpci.a
               LIBPOSIX?=              ${DESTDIR}/usr/lib/libposix.a
               LIBPTHREAD?=            ${DESTDIR}/usr/lib/libpthread.a
               LIBPUFFS?=              ${DESTDIR}/usr/lib/libpuffs.a
               LIBQUOTA?=              ${DESTDIR}/usr/lib/libquota.a
               LIBRADIUS?=             ${DESTDIR}/usr/lib/libradius.a
               LIBREFUSE?=             ${DESTDIR}/usr/lib/librefuse.a
               LIBRESOLV?=             ${DESTDIR}/usr/lib/libresolv.a
               LIBRMT?=                ${DESTDIR}/usr/lib/librmt.a
               LIBROKEN?=              ${DESTDIR}/usr/lib/libroken.a
               LIBRPCSVC?=             ${DESTDIR}/usr/lib/librpcsvc.a
               LIBRT?=                 ${DESTDIR}/usr/lib/librt.a
               LIBRUMP?=               ${DESTDIR}/usr/lib/librump.a
               LIBRUMPFS_CD9660?=      ${DESTDIR}/usr/lib/librumpfs_cd9660.a
               LIBRUMPFS_EFS?=         ${DESTDIR}/usr/lib/librumpfs_efs.a
               LIBRUMPFS_EXT2FS?=      ${DESTDIR}/usr/lib/librumpfs_ext2fs.a
               LIBRUMPFS_FFS?=         ${DESTDIR}/usr/lib/librumpfs_ffs.a
               LIBRUMPFS_HFS?=         ${DESTDIR}/usr/lib/librumpfs_hfs.a
               LIBRUMPFS_LFS?=         ${DESTDIR}/usr/lib/librumpfs_lfs.a
               LIBRUMPFS_MSDOS?=       ${DESTDIR}/usr/lib/librumpfs_msdos.a
               LIBRUMPFS_NFS?=         ${DESTDIR}/usr/lib/librumpfs_nfs.a
               LIBRUMPFS_NTFS?=        ${DESTDIR}/usr/lib/librumpfs_ntfs.a
               LIBRUMPFS_SYSPUFFS?=    ${DESTDIR}/usr/lib/librumpfs_syspuffs.a
               LIBRUMPFS_TMPFS?=       ${DESTDIR}/usr/lib/librumpfs_tmpfs.a
               LIBRUMPFS_UDF?=         ${DESTDIR}/usr/lib/librumpfs_udf.a
               LIBRUMPUSER?=           ${DESTDIR}/usr/lib/librumpuser.a
               LIBSASLC?=              ${DESTDIR}/usr/lib/libsaslc.a
               LIBSKEY?=               ${DESTDIR}/usr/lib/libskey.a
               LIBSL?=                 ${DESTDIR}/usr/lib/libsl.a
               LIBSQLITE3?=            ${DESTDIR}/usr/lib/libsqlite3.a
               LIBSSH?=                ${DESTDIR}/usr/lib/libssh.a
               LIBSSL?=                ${DESTDIR}/usr/lib/libssl.a
               LIBSTDCXX?=             ${DESTDIR}/usr/lib/libstdc++.a
               LIBSUPCXX?=             ${DESTDIR}/usr/lib/libsupc++.a
               LIBTERMINFO?=           ${DESTDIR}/usr/lib/libterminfo.a
               LIBTRE?=                ${DESTDIR}/usr/lib/libtre.a
               LIBUNBOUND?=            ${DESTDIR}/usr/lib/libunbound.a
               LIBUSBHID?=             ${DESTDIR}/usr/lib/libusbhid.a
               LIBUTIL?=               ${DESTDIR}/usr/lib/libutil.a
               LIBWIND?=               ${DESTDIR}/usr/lib/libwind.a
               LIBWRAP?=               ${DESTDIR}/usr/lib/libwrap.a
               LIBY?=                  ${DESTDIR}/usr/lib/liby.a
               LIBZ?=                  ${DESTDIR}/usr/lib/libz.a

               The following c startup files.

               LIBCRT0?=               ${DESTDIR}/usr/lib/crt0.o
               LIBCRTI?=               ${DESTDIR}/usr/lib/crti.o
               LIBCRTBEGIN?=           ${DESTDIR}/usr/lib/crti.o
               LIBCRTEND?=             ${DESTDIR}/usr/lib/crtn.o

               The following X-Windows libraries are predefined for DPADD:

               LIBDPS?=                ${DESTDIR}/usr/X11R7/lib/libdps.a
               LIBEGL?=                ${DESTDIR}/usr/X11R7/lib/libEGL.a
               LIBFNTSTUBS?=           ${DESTDIR}/usr/X11R7/lib/libfntstubs.a
               LIBFONTCACHE?=          ${DESTDIR}/usr/X11R7/lib/libfontcache.a
               LIBFONTCONFIG?=         ${DESTDIR}/usr/X11R7/lib/libfontconfig.a
               LIBFONTENC?=            ${DESTDIR}/usr/X11R7/lib/libfontenc.a
               LIBFREETYPE?=           ${DESTDIR}/usr/X11R7/lib/libfreetype.a
               LIBFS?=                 ${DESTDIR}/usr/X11R7/lib/libFS.a
               LIBGL?=                 ${DESTDIR}/usr/X11R7/lib/libGL.a
               LIBGLU?=                ${DESTDIR}/usr/X11R7/lib/libGLU.a
               LIBGLW?=                ${DESTDIR}/usr/X11R7/lib/libGLw.a
               LIBI810XVMC             4{DESTDIR}/usr/X11R7/lib/libI810XvMC.a
               LIBICE?=                ${DESTDIR}/usr/X11R7/lib/libICE.a
               LIBINTELXVMC            ${DESTDIR}/usr/X11R7/lib/libIntelXvMC.a
               LIBLBXUTIL?=            ${DESTDIR}/usr/X11R7/lib/liblbxutil.a
               LIBSM?=                 ${DESTDIR}/usr/X11R7/lib/libSM.a
               LIBX11_XCB?=            ${DESTDIR}/usr/X11R7/lib/libX11-xcb.a
               LIBX11?=                ${DESTDIR}/usr/X11R7/lib/libX11.a
               LIBXRES?=               ${DESTDIR}/usr/X11R7/lib/libXres.a
               LIBXAU?=                ${DESTDIR}/usr/X11R7/lib/libXau.a
               LIBXAU7?=               ${DESTDIR}/usr/X11R7/lib/libXau7.a
               LIBXAW?=                ${DESTDIR}/usr/X11R7/lib/libXaw.a
               LIBXCB?=                ${DESTDIR}/usr/X11R7/lib/libxcb.a
               LIBXCOMPOSITE?=         ${DESTDIR}/usr/X11R7/lib/libXcomposite.a
               LIBXCURSOR?=            ${DESTDIR}/usr/X11R7/lib/libXcursor.a
               LIBXCVT?=               ${DESTDIR}/usr/X11R7/lib/libxcvt.a
               LIBXDAMAGE?=            ${DESTDIR}/usr/X11R7/lib/libXdamage.a
               LIBXDMCP?=              ${DESTDIR}/usr/X11R7/lib/libXdmcp.a
               LIBXEXT?=               ${DESTDIR}/usr/X11R7/lib/libXext.a
               LIBXFIXES?=             ${DESTDIR}/usr/X11R7/lib/libXfixes.a
               LIBXFONT2?=             ${DESTDIR}/usr/X11R7/lib/libXfont2.a
               LIBXFONT?=              ${DESTDIR}/usr/X11R7/lib/libXfont.a
               LIBXFT?=                ${DESTDIR}/usr/X11R7/lib/libXft.a
               LIBXI?=                 ${DESTDIR}/usr/X11R7/lib/libXi.a
               LIBXINERAMA?=           ${DESTDIR}/usr/X11R7/lib/libXinerama.a
               LIBXKBFILE?=            ${DESTDIR}/usr/X11R7/lib/libxkbfile.a
               LIBXMU?=                ${DESTDIR}/usr/X11R7/lib/libXmu.a
               LIBXMUU?=               ${DESTDIR}/usr/X11R7/lib/libXmuu.a
               LIBXPM?=                ${DESTDIR}/usr/X11R7/lib/libXpm.a
               LIBXRANDR?=             ${DESTDIR}/usr/X11R7/lib/libXrandr.a
               LIBXRENDER?=            ${DESTDIR}/usr/X11R7/lib/libXrender.a
               LIBXSS?=                ${DESTDIR}/usr/X11R7/lib/libXss.a
               LIBXT?=                 ${DESTDIR}/usr/X11R7/lib/libXt.a
               LIBXTRAP?=              ${DESTDIR}/usr/X11R7/lib/libXTrap.a
               LIBXTST?=               ${DESTDIR}/usr/X11R7/lib/libXtst.a
               LIBXV?=                 ${DESTDIR}/usr/X11R7/lib/libXv.a
               LIBXXF86DGA?=           ${DESTDIR}/usr/X11R7/lib/libXxf86dga.a
               LIBXXF86MISC?=          ${DESTDIR}/usr/X11R7/lib/libXxf86misc.a
               LIBXXF86VM?=            ${DESTDIR}/usr/X11R7/lib/libXxf86vm.a

STRIPFLAG       The option passed to the install program to cause the binary
               to be stripped.

SUBDIR          A list of subdirectories that should be built as well.
               Each of the targets will execute the same target in the
               subdirectories.

SCRIPTS         A list of interpreter scripts [file.{sh,csh,pl,awk,...}].
               These are installed exactly like programs.

SCRIPTSDIR      The location to install the scripts.  Each script can be
               installed to a separate path by setting SCRIPTSDIR_<script>.

SCRIPTSNAME     The name that the above program will be installed as, if
               different from ${SCRIPTS}. These can be further specialized
               by setting SCRIPTSNAME_<script>.

FILES           See description of <bsd.files.mk>.

SHLINKDIR       Target directory for shared linker.  See description of
               <bsd.own.mk> for additional information about this variable.

The include file <bsd.prog.mk> includes the file named "../Makefile.inc"
if it exists, as well as the include file <bsd.man.mk>.

Some simple examples:

To build foo from foo.c with a manual page foo.1, use:

       PROG=   foo

       .include <bsd.prog.mk>

To build foo from foo.c with a manual page foo.2, add the line:

       MAN=    foo.2

If foo does not have a manual page at all, add the line
before any make(1) .include directives:

       NOMAN=

If foo has multiple source files, add the line:

       SRCS=   a.c b.c c.c d.c


=-=-=-=-=   bsd.rpc.mk   =-=-=-=-=

The include file <bsd.rpc.mk> contains a makefile fragment used to
construct source files built by rpcgen.

The following macros may be defined in makefiles which include
<bsd.rpc.mk> in order to control which files get built and how they
are to be built:

RPC_INCS        construct .h file from .x file
RPC_XDRFILES    construct _xdr.c from .x file
               (for marshalling/unmarshalling data types)
RPC_SVCFILES    construct _svc.c from .x file
               (server-side stubs)
RPC_SVCFLAGS    Additional options passed to builds of RPC_SVCFILES.

RPC_XDIR        Directory containing .x/.h files


=-=-=-=-=   bsd.shlib.mk   =-=-=-=-=

The include file <bsd.shlib.mk> computes parameters for shared library
installation and use.  It defines no targets.  <bsd.own.mk> MUST be
included before <bsd.shlib.mk>.

<bsd.own.mk> sets the following variables, if they are not already defined
(defaults are in brackets):

SHLIBINSTALLDIR If ${USE_SHLIBDIR} is not "no", use ${SHLIBINSTALLDIR}
               instead of ${LIBDIR} as the base path for shared library
               installation.  [/lib]

SHLIBDIR        The path to USE_SHLIBDIR shared libraries to use when building
               a program.  [/lib for programs in /bin and /sbin, /usr/lib
               for all others.]

_LIBSODIR       Set to ${SHLIBINSTALLDIR} if ${USE_SHLIBDIR} is not "no",
               otherwise set to ${LIBDIR}

SHLINKINSTALLDIR Base path for shared linker.  [/libexec]

SHLINKDIR       Path to use for shared linker when building a program.
               [/libexec for programs in /bin and /sbin, /usr/libexec for
               all others.]


=-=-=-=-=   bsd.subdir.mk   =-=-=-=-=

The include file <bsd.subdir.mk> contains the default targets for building
subdirectories.  It has the same eight targets as <bsd.prog.mk>: all,
clean, cleandir, depend, includes, install, lint, and tags.  It uses the
following variables:

NOSUBDIR        If this variable is defined, then the SUBDIR variable
               will be ignored and subdirectories will not be processed.

SUBDIR          For all of the directories listed in ${SUBDIR}, the
               specified directory will be visited and the target made.

               As a special case, the use of a token .WAIT as an
               entry in SUBDIR acts as a synchronization barrier
               when multiple make jobs are run; subdirs before the
               .WAIT must complete before any subdirs after .WAIT are
               started.  See make(1) for some caveats on use of .WAIT
               and other special sources.


=-=-=-=-=   bsd.x11.mk   =-=-=-=-=

The include file <bsd.x11.mk> contains parameters and targets for
cross-building X11 from ${X11SRCDIR.<package>}.  It should be included
after the general Makefile contents but before the include files such as
<bsd.prog.mk> and <bsd.lib.mk>.

It provides the following targets:
       .man.1 .man.3 .man.4 .man.5 .man.7:
               If ${MAN} or ${PROG} is set and ${MKMAN} != "no",
               these rules convert from X11's manual page source
               into an mdoc.old source file.

It sets the following variables:

BINDIR                  Set to ${X11BINDIR}.
                       To override, define after including <bsd.x11.mk>

LIBDIR                  Set to ${X11USRLIBDIR}.
                       To override, define after including <bsd.x11.mk>

MANDIR                  Set to ${X11MANDIR}.
                       To override, define after including <bsd.x11.mk>

CPPFLAGS                Appended with definitions to include from
                       ${DESTDIR}${X11INCDIR}

LDFLAGS                 Appended with definitions to link from
                       ${DESTDIR}${X11USRLIBDIR}

X11FLAGS.CONNECTION     Equivalent to X11's CONNECTION_FLAGS.

X11FLAGS.EXTENSION      Equivalent to X11's EXT_DEFINES.

X11FLAGS.LOADABLE       Equivalent to X11's LOADABLE.

X11FLAGS.OS_DEFINES     Equivalent to X11's OS_DEFINES.

X11FLAGS.SERVER         Equivalent to X11's ServerDefines.

X11FLAGS.THREADLIB      Equivalent to X11's THREADS_DEFINES for libraries.

X11FLAGS.THREADS        Equivalent to X11's THREADS_DEFINES.

X11FLAGS.VERSION        cpp(1) definitions of OSMAJORVERSION and OSMINORVERSION.

X11FLAGS.DIX            Equivalent to X11's DIX_DEFINES.

X11TOOL_UNXCOMM         Commandline to convert `XCOMM' comments to `#'

It uses the following variables:

APPDEFS                 List of app-default files to install.

CPPSCRIPTS              List of files/scripts to run through cpp(1)
                       and then ${X11TOOL_UNXCOMM}.  The source files
                       have a `.cpp' suffix, the generated files do not.

CPPSCRIPTFLAGS          Additional options to cpp(1) when building CPPSCRIPTS.

CPPSCRIPTFLAGS_<fn>     Additional options to cpp(1) when building CPPSCRIPT <fn>.


=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=

The following files are described here for completion, but they are not
supposed to be included directly from other Makefiles; they are used
internally by other system files.

=-=-=-=-=   bsd.sys.mk   =-=-=-=-=

The include file <bsd.sys.mk> is used by other system mk files and
it is not intended to be included standalone. It contains rules and
system build variables. It requires bsd.own.mk to be included first.
It contains overrides that are used when building the NetBSD source tree.

The following variables control how various files are compiled/built.
(Note that these may be overridden in <bsd.own.mk> if USETOOLS == "yes"):

AR              Create, modify, and extract from archives.  [ar]

ARFLAGS         Options to ${AR}.  [rl]

ARM_ELF2AOUT    Convert ELF-format executable to a.out.  [elf2aout]

AS              Assembler.  [as]

AFLAGS          Options to ${CC} when compiling or linking .s or .S
               assembly source files.  []

BUILDSEED       g++(1) uses random numbers when compiling C++ code.  This
               variable seeds the g++(1) random number generator using
               -frandom-seed with this value.  By default, it is set to
               "NetBSD-(majorversion)".  Using a fixed value causes C++
               binaries to be the same when built from the same sources,
               resulting in identical (reproducible) builds.  Additional
               information is available in the g++(1) documentation of
               -frandom-seed.

               Default: Unset.

CC              C compiler.  [cc]

CFLAGS          Options to ${CC}.  [Usually -O or -O2]
               Note: CFLAGS should never be set in mk.conf(5).

CPP             C Pre-Processor.  [cpp]

CPPFLAGS        Options to ${CPP}.  []

CPUFLAGS        Optimization options for ${CC}.  []

CXX             C++ compiler.  [c++]

CXXFLAGS        Options to ${CXX}.  [${CFLAGS}]

M68K_ELF2AOUT   Convert ELF-format executable to a.out.  [elf2aout]

MIPS_ELF2ECOFF  Convert ELF-format executable to ECOFF.  [elf2ecoff]

FC              Fortran compiler.  [f77]

FFLAGS          Options to {$FC}.  [-O]

HOST_SH         Shell.  This must be an absolute path, because it may be
               substituted into "#!" lines in scripts.  [/bin/sh]

INSTALL         install(1) command.  [install]

LEX             Lexical analyzer.  [lex]

LFLAGS          Options to ${LEX}.  []

LPREFIX         Symbol prefix for ${LEX} (see -P option in lex(1)) [yy]

LD              Linker.  [ld]

LDFLAGS         Options to ${CC} during the link process.  []

LINT            C program verifier.  [lint]

LINTFLAGS       Options to ${LINT}.  [-chapbrxzgFS]

LORDER          List dependencies for object files.  [lorder]

MAKE            make(1).  [make]

MKDEP           Construct Makefile dependency list.  [mkdep]

MKDEPCXX        Construct Makefile dependency list for C++ files.  [mkdep]

NM              List symbols from object files.  [nm]

PC              Pascal compiler.  [pc]  (Not present)

PFLAGS          Options to ${PC}.  []

OBJC            Objective C compiler.  [${CC}]

OBJCFLAGS       Options to ${OBJC}.  [${CFLAGS}]

OBJCOPY         Copy and translate object files.  [objcopy]

OBJCOPYLIBFLAGS Options to pass to objcopy when library objects are
               being built. [${.TARGET} =~ "*.po" ? -X : -x]

OBJDUMP         Display information from object files.  [objdump]

RANLIB          Generate index to archive.  [ranlib]

READELF         Display information from ELF object files.  [readelf]

SIZE            List section sizes and total size.  [size]

STRINGS         Display printable character sequences in files.  [strings]

STRIP           Discard symbols from object files.  [strip]

TSORT           Topological sort of a directed graph.  [tsort -q]

YACC            LALR(1) parser generator.  [yacc]

YFLAGS          Options to ${YACC}.  []

YHEADER         If defined, add "-d" to YFLAGS, and add dependencies
               from <file>.y to <file>.h and <file>.c, and add
               <foo>.h to CLEANFILES.

YPREFIX         If defined, add "-p ${YPREFIX}" to YFLAGS.


Other variables of note (incomplete list):

NOCLANGERROR    If defined and clang is used as C compiler, -Werror is not
               passed to it.

NOGCCERROR      If defined, prevents passing certain ${CFLAGS} to GCC
               that cause warnings to be fatal, such as:
                       -Werror -Wa,--fatal-warnings
               (The latter being for as(1).)

WARNS           Crank up compiler warning options; the distinct levels are:
                       WARNS=1
                       WARNS=2
                       WARNS=3
                       WARNS=4
                       WARNS=5
                       WARNS=6

=-=-=-=-=   bsd.host.mk   =-=-=-=-=

This file is automatically included from bsd.own.mk. It contains settings
for all the HOST_* variables that are used in host programs and libraries.

HOST_AR                 The host archive processing command

HOST_CC                 The host c compiler

HOST_CFLAGS             The host c compiler options

HOST_COMPILE.c          The host c compiler line with options

HOST_COMPILE.cc         The host c++ compiler line with options

HOST_CPP                The host c pre-processor

HOST_CPPFLAGS           The host c pre-processor options

HOST_CXX                The host c++ compiler

HOST_CXXFLAGS           The host c++ compiler options

HOST_INSTALL_DIR        The host command to install a directory

HOST_INSTALL_FILE       The host command to install a file

HOST_INSTALL_SYMLINK    The host command to install a symlink

HOST_LD                 The host linker command

HOST_LDFLAGS            The host linker options

HOST_LINK.c             The host c linker line with options

HOST_LINK.cc            The host c++ linker line with options

HOST_LN                 The host command to link two files

HOST_MKDEP              The host command to create dependencies for c programs

HOST_MKDEPCXX           The host command to create dependencies for c++ programs

HOST_OSTYPE             The host OSNAME-RELEASE-ARCH tupple

HOST_RANLIB             The host command to create random access archives

HOST_SH                 The host Bourne shell interpreter name (absolute path)

=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=