.\"	$NetBSD: mk.conf.5,v 1.97.2.1 2023/10/20 16:04:59 martin Exp $
.\"
.\"  Copyright (c) 1999-2003 The NetBSD Foundation, Inc.
.\"  All rights reserved.
.\"
.\"  This code is derived from software contributed to The NetBSD Foundation
.\"  by Luke Mewburn.
.\"
.\"  Redistribution and use in source and binary forms, with or without
.\"  modification, are permitted provided that the following conditions
.\"  are met:
.\"  1. Redistributions of source code must retain the above copyright
.\"     notice, this list of conditions and the following disclaimer.
.\"  2. Redistributions in binary form must reproduce the above copyright
.\"     notice, this list of conditions and the following disclaimer in the
.\"     documentation and/or other materials provided with the distribution.
.\"
.\" THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
.\" ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
.\" TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
.\" PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
.\" BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
.\" CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
.\" SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
.\" INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
.\" CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
.\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
.\" POSSIBILITY OF SUCH DAMAGE.
.\"
.Dd October 20, 2023
.Dt MK.CONF 5
.Os
.\" turn off hyphenation
.hym 999
.
.Sh NAME
.Nm mk.conf
.Nd make configuration file
.
.Sh DESCRIPTION
The
.Nm
file overrides various parameters used during the build of the system.
.Pp
Listed below are the
.Nm
variables that may be set, the values to which each may be set,
a brief description of what each variable does, and a reference to
relevant manual pages.
.
.Ss NetBSD System variables
.
.de YorN
Can be set to
.Dq yes
or
.Dq no .
..
.de DFLT
.Pp
.Em Default :
..
.de DFLTu
.DFLT
Unset.
..
.de DFLTy
.DFLT
.Dq yes
..
.de DFLTn
.DFLT
.Dq no
..
.Bl -tag -width MKDYNAMICROOT
.
.It Sy NETBSDSRCDIR
The path to the top level of the
.Nx
sources.
If
.Xr make 1
is run from within the
.Nx
source tree, the default is the top
level of that tree (as determined by the presence of
.Pa build.sh
and
.Pa tools/ ) ,
otherwise
.Sy BSDSRCDIR
will be used.
.
.It Sy BSDOBJDIR
The real path to the
.Sq obj
tree for the
.Nx
source tree.
.DFLT
.Pa /usr/obj
.
.It Sy BSDSRCDIR
The real path to the
.Nx
source tree.
.DFLT
.Pa /usr/src
.
.It Sy BUILD
If defined,
.Sq "make install"
checks that the targets in the source directories are up-to-date and
re-makes them if they are out of date, instead of blindly trying to install
out of date or non-existent targets.
.DFLTu
.
.It Sy BUILDID
Identifier for the build.
The identifier will be appended to
object directory names, and can be consulted in the
.Xr make 1
configuration file in order to set additional build parameters,
such as compiler flags.
.DFLTu
.
.It Sy COPTS
Extra options for the C compiler.
Should be appended to (e.g.,
.Sy COPTS+=-g ) ,
rather than explicitly set.
Note that
.Sy CPUFLAGS ,
not
.Sy COPTS ,
should be used for
compiler flags that select CPU-related options.
Also note that
.Sy CFLAGS
should never be set in
.Nm .
.
.It Sy CPUFLAGS
Additional flags passed to the compiler/assembler to select
CPU instruction set options, CPU tuning options, etc.
Such options should not be specified in
.Sy COPTS ,
because some parts of the build process need to override
CPU-related compiler options.
.
.It Sy DESTDIR
Directory to contain the built
.Nx
system.
If set, special options are passed to the compilation tools to
prevent their default use of the host system's
.Sy /usr/include , /usr/lib ,
and so forth.
This pathname should
.Em not
end with a slash
.Pq /
character (for installation into the system's root directory, set
.Sy DESTDIR
to an empty string).
The directory must reside on a file system which supports long file
names and hard links.
.DFLT
Empty string if
.Sy USETOOLS
is
.Dq yes ;
unset otherwise.
.Pp
.Em Note :
.Sy build.sh
will provide a default of
.Pa destdir. Ns Sy MACHINE
(in the top-level
.Sy .OBJDIR )
unless run in
.Sq expert
mode
.
.It Sy KERNEL_DIR No Pq experimental
.YorN
Indicates if a top-level directory
.Sy /netbsd/
is created.
If
.Dq yes ,
the directory will contain a kernel file
.Pa /netbsd/kernel
and a corresponding modules directory
.Pa /netbsd/modules/ .
System bootstrap procedures will be modified to search for the kernel
and modules in the
.Pa /netbsd/
directory.
This is intended to simplify system upgrade and rollback procedures by
keeping the kernel and its associated modules together in one place.
.Pp
If
.Dq no ,
the kernel file will be stored in
.Pa /netbsd
and the modules will be stored within the
.Pa /stand/${ARCH}/
directory hierarchy.
.Pp
The
.Sy KERNEL_DIR
option is a work-in-progress, and is highly experimental.
It is also subject to change without notice.
.DFLTn
.It Sy MAKEVERBOSE
Level of verbosity of status messages.
Supported values:
.Bl -tag -width xxx
.It 0
No descriptive messages or commands executed by
.Xr make 1
are shown.
.It 1
Brief messages are shown describing what is being done,
but the actual commands executed by
.Xr make 1
are not displayed.
.It 2
Descriptive messages are shown as above (prefixed with a
.Sq # ) ,
and ordinary commands performed by
.Xr make 1
are displayed.
.It 3
In addition to the above, all commands performed by
.Xr make 1
are displayed, even if they would ordinarily have been hidden
through use of the
.Dq \&@
prefix in the relevant makefile.
.It 4
In addition to the above, commands executed by
.Xr make 1
are traced through use of the
.Xr sh 1
.Dq Fl x
flag.
.El
.DFLT
2
.
.It Sy MKATF
.YorN
Indicates whether the Automated Testing Framework is built and installed.
This also controls whether the
.Nx
test suite is built and installed,
as the tests rely on ATF and cannot be built without it.
.DFLTy
.
.It Sy MKBINUTILS
.YorN
Indicates whether any of the binutils tools or libraries should be built.
That is, the libraries
.Sy libbfd ,
.Sy libiberty ,
or any of the things that depend upon them, e.g.
.Xr as 1 ,
.Xr ld 1 ,
.Xr dbsym 8 ,
or
.Xr mdsetimage 8 .
.DFLTy
.
.It Sy MKBSDTAR
.YorN
If
.Dq yes ,
.Sy libarchive Ns - Ns
based implementations of
.Xr cpio 1
and
.Xr tar 1
are built and installed.
If
.Dq no ,
.Xr pax 1
based frontends are used.
.DFLTy
.
.It Sy MKCATPAGES
.YorN
Indicates whether preformatted plaintext manual pages will be created
and installed.
.DFLTn
.
.It Sy MKCLEANSRC
.YorN
Indicates whether
.Sq "make clean"
and
.Sq "make cleandir"
will delete file names in
.Sy CLEANFILES
or
.Sy CLEANDIRFILES
from both the object directory,
.Sy .OBJDIR ,
and the source directory,
.Sy .SRCDIR .
.Pp
If
.Dq yes ,
then these file names will be deleted relative to both
.Sy .OBJDIR
and
.Sy .CURDIR .
If
.Dq no ,
then the deletion will be performed relative to
.Sy .OBJDIR
only.
.DFLTy
.
.It Sy MKCLEANVERIFY
.YorN
Controls whether
.Sq "make clean"
and
.Sq "make cleandir"
will verify that files have been deleted.
If
.Dq yes ,
then file deletions will be verified using
.Xr ls 1 .
If
.Dq no ,
then file deletions will not be verified.
.DFLTy
.
.It Sy MKCOMPAT
.YorN
Indicates whether support for multiple ABIs is to be built and
installed.
.DFLTy
on amd64, mips64 and sparc64,
.Dq no
on other architectures.
.
.It Sy MKCOMPLEX
.YorN
Indicates whether the
.Lb libm
is compiled with support for
.In complex.h .
.DFLTy
.
.It Sy MKCTF
.YorN
Indicates whether CTF tools are to be built and installed.
If yes, the tools will be used to generate and manipulate
CTF data of ELF binaries during build.
.DFLTn
.
.It Sy MKCVS
.YorN
Indicates whether
.Xr cvs 1
is built.
.DFLTy
.
.It Sy MKDEBUG
.YorN
Indicates whether separate debugging symbols should be installed into
.Sy DESTDIR Ns Pa /usr/libdata/debug .
.Pp
If
.Dq yes ,
acts as
.Sy MKSTRIPSYM=no .
.
.DFLTn
.
.It Sy MKDEBUGKERNEL
.YorN
Indicates whether debugging symbols will be built for kernels
by default; pretend as if
.Em makeoptions DEBUG="-g"
is specified in kernel configuration files.
This will also put the debug kernel in the kernel sets.
See
.Xr options 4
for details.
.DFLTn
.
.It Sy MKDEBUGLIB
.YorN
Indicates whether debug libraries
.Sy ( lib*_g.a )
will be built and installed.
Debug libraries are compiled with
.Dq Li -g -DDEBUG .
.DFLTn
.
.It Sy MKDEBUGTOOLS
.YorN
Indicates whether debug information
.Sy ( lib*_g.a )
will be included in the build toolchain.
.DFLTn
.
.It Sy MKDOC
.YorN
Indicates whether system documentation destined for
.Sy DESTDIR Ns Pa /usr/share/doc
will be installed.
.DFLTy
.
.It Sy MKDTRACE
.YorN
Indicates whether the kernel modules, utilities and libraries for
.Xr dtrace 1
support are to be built and installed.
.DFLTn
.
.It Sy MKDYNAMICROOT
.YorN
Indicates whether all programs should be dynamically linked,
and to install shared libraries required by
.Pa /bin
and
.Pa /sbin
and the shared linker
.Xr ld.elf_so 1
into
.Pa /lib .
If
.Sq no ,
link programs in
.Pa /bin
and
.Pa /sbin
statically.
.DFLTy
.
.It Sy MKGCC
.YorN
Indicates whether
.Xr gcc 1
or any related libraries
.Pq Sy libg2c , libgcc , libobjc , libstdc++
are built.
.DFLTy
.
.It Sy MKGCCCMDS
.YorN
Indicates whether
.Xr gcc 1
is built.
If
.Dq no ,
then
.Sy MKGCC
controls if the
GCC libraries are built.
.DFLTy
.
.It Sy MKGDB
.YorN
Indicates whether
.Xr gdb 1
is built.
.DFLTy
.
.It Sy MKHESIOD
.YorN
Indicates whether the Hesiod infrastructure
(libraries and support programs) is built and installed.
.DFLTy
.
.It Sy MKHOSTOBJ
.YorN
If set to
.Dq yes ,
then for programs intended to be run on the compile host,
the name, release, and architecture of the host operating system
will be suffixed to the name of the object directory created by
.Dq make obj .
(This allows multiple host systems to compile
.Nx
for a single target.)
If set to
.Dq no ,
then programs built to be run on the compile host will use the same
object directory names as programs built to be run on the target.
.DFLTn
.
.It Sy MKHTML
.YorN
Indicates whether the HTML manual pages are created and installed.
.DFLTy
.
.It Sy MKIEEEFP
.YorN
Indicates whether code for IEEE754/IEC60559 conformance is built.
Has no effect on most platforms.
.DFLTy
.
.It Sy MKINET6
Indicates whether INET6 (IPv6) infrastructure
(libraries and support programs) is built and installed.
.DFLTy
.
.It Sy MKINFO
.YorN
Indicates whether GNU Info files, used for the documentation for
most of the compilation tools, will be built and installed.
.DFLTy
.
.It Sy MKIPFILTER
.YorN
Indicates whether the
.Xr ipf 4
programs, headers and other components will be built and installed.
.DFLTy
.
.It Sy MKISCSI
.YorN
Indicates whether the iSCSI library and applications are
built and installed.
.DFLTy
.
.It Sy MKKERBEROS
.YorN
Indicates whether the Kerberos v5 infrastructure
(libraries and support programs) is built and installed.
Caution: the default
.Xr pam 8
configuration requires that Kerberos be present even if not used.
Do not install a userland without Kerberos without also either
updating the
.Xr pam.conf 5
files or disabling PAM via
.Sy MKPAM .
Otherwise all logins will fail.
.DFLTy
.
.It Sy MKKMOD
.YorN
Indicates whether kernel modules are built and installed.
.DFLTy
.
.It Sy MKKYUA
.YorN
Indicates whether Kyua (the testing infrastructure used by
.Nx )
is built and installed.
Note that
.Em this does not control the installation of the tests themselves .
The tests rely on the ATF libraries and therefore their build is controlled
by the
.Sy MKATF
knob.
.DFLTn
until the import of Kyua is done and validated.
.
.It Sy MKLDAP
.YorN
Indicates whether the Lightweight Directory Access Protocol (LDAP)
infrastructure
(libraries and support programs) is built and installed.
.DFLTy
.
.It Sy MKLINKLIB
.YorN
Indicates whether all of the shared library infrastructure is built.
If
.Sq no ,
prevents:
installation of the
.Sy *.a
libraries,
installation of the
.Sy *_pic.a
libraries on PIC systems,
building of
.Sy *.a
libraries on PIC systems,
or
installation of
.Sy .so
symlinks on ELF systems.
.DFLTy
.Pp
If
.Dq no ,
acts as
.Sy MKPICINSTALL=no MKPROFILE=no .
.
.It Sy MKLINT
.YorN
Indicates whether
.Xr lint 1
will be run against portions of the
.Nx
source code during the build, and whether lint libraries will be
installed into
.Sy DESTDIR Ns Pa /usr/libdata/lint .
.DFLTy
.
.It Sy MKLVM
.YorN
If not
.Dq no ,
build and install the logical volume manager.
.DFLTy
.
.It Sy MKMAN
.YorN
Indicates whether manual pages will be installed.
.DFLTy
.Pp
If
.Dq no ,
acts as
.Sy MKCATPAGES=no MKHTML=no .
.
.It Sy MKMANZ
.YorN
Indicates whether manual pages should be compressed with
.Xr gzip 1
at installation time.
.DFLTn
.
.It Sy MKMDNS
.YorN
Indicates whether the mDNS (Multicast DNS) infrastructure
(libraries and support programs) is built and installed.
.DFLTy
.
.It Sy MKNLS
.YorN
Indicates whether Native Language System (NLS) locale zone files will be
built and installed.
.DFLTy
.
.It Sy MKNOUVEAUFIRMWARE
.YorN
Indicates whether to install the
.Pa /libdata/firmware/nouveau
directory, which is necessary for the nvidia DRM driver.
.DFLT
Platform dependent.
.
.It Sy MKNPF
.YorN
Indicates whether the NPF packet filter is to be built and installed.
.DFLTy
.
.It Sy MKOBJ
.YorN
Indicates whether object directories will be created when running
.Dq make obj .
If set to
.Dq no ,
then all built files will be located inside the regular source tree.
.DFLTy
.Pp
If
.Dq no ,
acts as
.Sy MKOBJDIRS=no .
.
.It Sy MKOBJDIRS
.YorN
Indicates whether object directories will be created automatically
(via a
.Dq make obj
pass) at the start of a build.
.DFLTn
.
.It Sy MKPAM
.YorN
Indicates whether the
.Xr pam 8
framework (libraries and support files) is built.
The pre-PAM code is not supported and may be removed in the future.
.DFLTy
.
.It Sy MKPCC
.YorN
Indicates whether
.Xr pcc 1
or any related libraries
.Pq Sy libpcc , libpccsoftfloat
are built.
.DFLTn
.
.It Sy MKPF
.YorN
Indicates whether the
.Xr pf 4
programs, headers and LKM will be built and installed.
.DFLTy
.
.It Sy MKPIC
.YorN
Indicates whether shared objects and libraries will be created and
installed.
If set to
.Dq no ,
the entire built system will be statically linked.
.DFLT
Platform dependent.
As of this writing, all platforms except
.Sy m68000
default to
.Dq yes .
.Pp
If
.Dq no ,
acts as
.Sy MKPICLIB=no .
.
.It Sy MKPICINSTALL
.YorN
Indicates whether the
.Xr ar 1
format libraries
.Sy ( lib*_pic.a ) ,
used to generate shared libraries, are installed.
.DFLTy
.
.It Sy MKPICLIB
.YorN
Indicates whether the
.Xr ar 1
format libraries
.Sy ( lib*_pic.a ) ,
used to generate shared libraries.
.DFLTy
.
.It Sy MKPIE
Indicates whether Position Independent Executables (PIE)
are built and installed.
.DFLT
Platform dependent.
.
.It Sy MKPIGZGZIP
.YorN
If
.Dq no ,
the
.Xr pigz 1
utility is not installed as
.Xr gzip 1 .
.DFLTn
.
.It Sy MKPOSTFIX
.YorN
Indicates whether Postfix is built.
.DFLTy
.
.It Sy MKPROFILE
.YorN
Indicates whether profiled libraries
.Sy ( lib*_p.a )
will be built and installed.
.DFLT
.Dq yes ;
however, some platforms turn off
.Sy MKPROFILE
by default at times due to toolchain problems with profiled code.
.
.It Sy MKREPRO
.YorN
Indicates whether builds are to be reproducible.
If
.Dq yes ,
two builds from the same source tree will produce the same build
results.
.DFLTn
.
.It Sy MKRADEONFIRMWARE
.YorN
Indicates whether to install the
.Pa /libdata/firmware/radeon
directory, which is necessary for the radeon DRM driver.
.DFLT
Platform dependent.
.
.It Sy MKRELRO
If
.Dq partial ,
set the non-PLT GOT to read-only.
If
.Dq full ,
also force immediate symbol binding.
.DFLT
Platform dependent.
.
.It Sy MKRUMP
.YorN
Indicates whether the
.Xr rump 3
headers, libraries and programs are to be installed.
.DFLTy
.
.It Sy MKSHARE
.YorN
Indicates whether files destined to reside in
.Sy DESTDIR Ns Pa /usr/share
will be built and installed.
.DFLTy
.Pp
If
.Dq no ,
acts as
.Sy MKCATPAGES=no MKDOC=no MKINFO=no MKHTML=no MKMAN=no MKNLS=no .
.
.It Sy MKSKEY
.YorN
Indicates whether the S/key infrastructure
(libraries and support programs) is built.
.DFLTy
.
.It Sy MKSOFTFLOAT
.YorN
Indicates whether the compiler generates output containing
library calls for floating point and possibly soft-float library
support.
.DFLTn
.
.It Sy MKSTATICLIB
.YorN
Indicates whether the normal static libraries
.Sy ( lib*_g.a )
will be built and installed.
.DFLTy
.
.It Sy MKSTRIPIDENT
.YorN
Indicates whether RCS IDs, for use with
.Xr ident 1 ,
should be stripped from program binaries and shared libraries.
.DFLTn
.
.It Sy MKSTRIPSYM
.YorN
Indicates whether all local symbols should be stripped from shared libraries.
If
.Dq yes ,
strip all local symbols from shared libraries;
the affect is equivalent to the
.Fl x
option of
.Xr ld 1 .
If
.Dq no ,
strip only temporary local symbols; the affect is equivalent
to the
.Fl X
option of
.Xr ld 1 .
Keeping non-temporary local symbols
such as static function names is useful on using DTrace for
userland libraries and getting a backtrace from a rump kernel
loading shared libraries.
.NOVAR MKDEBUG=yes
.DFLTy
.
.It Sy MKUNPRIVED
.YorN
Indicates whether an unprivileged install will occur.
The user, group, permissions, and file flags, will not be set on
the installed item; instead the information will be appended to
a file called
.Pa METALOG
in
.Sy DESTDIR .
The contents of
.Pa METALOG
is used during the generation of the distribution tar files to ensure
that the appropriate file ownership is stored.
.DFLTn
.
.It Sy MKUPDATE
.YorN
Indicates whether all install operations intended to write to
.Sy DESTDIR
will compare file timestamps before installing, and skip the install
phase if the destination files are up-to-date.
This also has implications on full builds (see next subsection).
.DFLTn
.
.It Sy MKX11
.YorN
Indicates whether X11 is built and installed
(by descending into
.Pa src/external/mit/xorg ) .
.DFLTn
.
.It Sy MKX11FONTS
.YorN
If
.Dq no ,
do not build and install the X fonts.
.DFLTy
.
.It Sy X11MOTIFPATH
Location of the Motif installation to use if setting
.Sy MKX11MOTIF
to
.Dq yes .
.DFLT
.Pa /usr/pkg
.
.It Sy MKX11MOTIF
.YorN
If
.Dq yes ,
build the native Xorg libGLw with Motif stubs.
Requires that Motif can be found via
.Sy X11MOTIFPATH .
.DFLTn
.
.It Sy MKYP
.YorN
Indicates whether the YP (NIS) infrastructure
(libraries and support programs) is built.
.DFLTy
.
.It Sy MKZFS
.YorN
Indicates whether the ZFS kernel module and the utilities and
libraries used to manage the ZFS system are to be built.
.DFLTy
on amd64,
.Dq no
on other architectures.
.
.It Sy OBJMACHINE
If defined, creates objdirs of the form
.Pa obj. Ns Sy MACHINE ,
where
.Sy MACHINE
is the current architecture (as per
.Sq "uname -m" ) .
.
.It Sy RELEASEDIR
If set, specifies the directory to which a
.Xr release 7
layout will be written at the end of a
.Dq make release .
.DFLTu
.Pp
.Em Note :
.Sy build.sh
will provide a default of
.Pa releasedir
(in the top-level
.Sy .OBJDIR )
unless run in
.Sq expert
mode
.
.It Sy TOOLDIR
Directory to hold the host tools, once built.
This directory should be unique to a given host system and
.Nx
source tree.
(However, multiple targets may share the same
.Sy TOOLDIR ;
the target-dependent files have unique names.)
If unset, a default based
on the
.Xr uname 1
information of the host platform will be created in the
.Sy .OBJDIR
of
.Pa src .
.DFLTu
.
.It Sy USE_FORT
Indicates whether the so-called
.Dq FORTIFY_SOURCE
.Xr security 7
extensions are enabled; see
.Xr ssp 3
for details.
This imposes some performance penalty.
.DFLTn
.
.It Sy USE_HESIOD
.YorN
Indicates whether Hesiod support is
enabled in the various applications that support it.
If
.Sy MKHESIOD=no ,
.Sy USE_HESIOD
will also be forced to
.Dq no .
.DFLTy
.
.It Sy USE_INET6
.YorN
Indicates whether INET6 (IPv6) support is
enabled in the various applications that support it.
If
.Sy MKINET6=no ,
.Sy USE_INET6
will also be forced to
.Dq no .
.DFLTy
.
.It Sy USE_JEMALLOC
.YorN
Indicates whether the
.Em jemalloc
allocator
.Pq which is designed for improved performance with threaded applications
is used instead of the
.Em phkmalloc
allocator
.Pq that was the default until Nx 5.0 .
.DFLTy
.
.It Sy USE_KERBEROS
.YorN
Indicates whether Kerberos v5 support is
enabled in the various applications that support it.
If
.Sy MKKERBEROS=no ,
.Sy USE_KERBEROS
will also be forced to
.Dq no .
.DFLTy
.
.It Sy USE_LDAP
.YorN
Indicates whether LDAP support is
enabled in the various applications that support it.
If
.Sy MKLDAP=no ,
.Sy USE_LDAP
will also be forced to
.Dq no .
.DFLTy
.
.It Sy USE_PAM
.YorN
Indicates whether
.Xr pam 8
support is enabled in the various applications that support it.
If
.Sy MKPAM=no ,
.Sy USE_PAM
will also be forced to
.Dq no .
.DFLTy
.
.It Sy USE_SKEY
.YorN
Indicates whether S/key support is
enabled in the various applications that support it.
If
.Sy MKSKEY=no ,
.Sy USE_SKEY
will also be forced to
.Dq no .
.DFLTy
.Pp
This is mutually exclusive to
.Sy USE_PAM!=no .
.
.It Sy USE_SSP
.YorN
Indicates whether GCC stack-smashing protection (SSP) support,
which detects stack overflows and aborts the program,
is enabled.
This imposes some performance penalty.
.DFLTy
.
.It Sy USE_YP
.YorN
Indicates whether YP (NIS) support is
enabled in the various applications that support it.
If
.Sy MKYP=no ,
.Sy USE_YP
will also be forced to
.Dq no .
.DFLTy
.
.It Sy USETOOLS
Indicates whether the tools specified by
.Sy TOOLDIR
should be used as part of a build in progress.
Must be set to
.Dq yes
if cross-compiling.
.Bl -tag -width "never"
.It Sy yes
Use the tools from
.Sy TOOLDIR .
.It Sy no
Do not use the tools from
.Sy TOOLDIR ,
but refuse to build native compilation tool components that are
version-specific for that tool.
.It Sy never
Do not use the tools from
.Sy TOOLDIR ,
even when building native tool components.
This is similar to the traditional
.Nx
build method, but does
.Em 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
.Nx
source tree.
.El
.DFLT
.Dq yes
if building all or part of a whole
.Nx
source tree (detected automatically);
.Dq no
otherwise (to preserve traditional semantics of the
.Aq bsd.*.mk
.Xr make 1
include files).
.
.El
.
.Ss pkgsrc system variables
.
Please see the pkgsrc guide at
.Lk http://www.netbsd.org/Documentation/pkgsrc/
or
.Pa pkgsrc/doc/pkgsrc.txt
for more variables used internally by the package system and
.Pa ${PKGSRCDIR}/mk/defaults/mk.conf
for package-specific examples.
.
.Sh FILES
.Bl -tag -width /etc/mk.conf
.
.It Pa /etc/mk.conf
This file.
.
.It Pa ${PKGSRCDIR}/mk/defaults/mk.conf
Examples for settings regarding the pkgsrc collection.
.El
.
.Sh SEE ALSO
.Xr make 1 ,
.Pa /usr/share/mk/bsd.README ,
.Pa pkgsrc/doc/pkgsrc.txt ,
.Lk http://www.netbsd.org/Documentation/pkgsrc/
.Sh HISTORY
The
.Nm
file appeared in
.Nx 1.2 .