MK.CONF(5) | File Formats Manual | MK.CONF(5)

# NAME

`mk.conf` —
make configuration file

# DESCRIPTION

The `mk.conf` file overrides various parameters used during the build of the system.

Listed below are the `mk.conf` 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.

## NetBSD System variables

NETBSDSRCDIR
  The path to the top level of the NetBSD sources. If make(1) is run from within the NetBSD source tree, the default is the top level of that tree (as determined by the presence of build.sh and tools/), otherwise BSDSRCDIR will be used.
BSDOBJDIR
  The real path to the ‘obj’ tree for the NetBSD source tree.

  Default: /usr/obj

BSDSRCDIR
  The real path to the NetBSD source tree.

  Default: /usr/src

BUILD
  If defined, ‘make install’ checks that the targets in the source directories are up-to-date and re-makes them if they are out of date, instead of blindly trying to install out of date or non-existent targets.

  Default: Unset.

BUILDID
  Identifier for the build. The identifier will be appended to object directory names, and can be consulted in the make(1) configuration file in order to set additional build parameters, such as compiler flags.

  Default: Unset.

COPTS
  Extra options for the C compiler. Should be appended to (e.g., COPTS+=-g), rather than explicitly set. Note that CPUFLAGS, not COPTS, should be used for compiler flags that select CPU-related options. Also note that CFLAGS should never be set in `mk.conf`.
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 COPTS, because some parts of the build process need to override CPU-related compiler options.
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 should not end with a slash (/) character (for installation into the system's root directory, set DESTDIR to an empty string). The directory must reside on a file system which supports long file names and hard links.

  Default: Empty string if USETOOLS is “yes”; unset otherwise.

  Note: build.sh will provide a default of destdir.MACHINE (in the top-level .OBJDIR) unless run in ‘expert’ mode

MAKEVERBOSE
  Level of verbosity of status messages. Supported values:
  0
    No descriptive messages or commands executed by make(1) are shown.
  1
    Brief messages are shown describing what is being done, but the actual commands executed by make(1) are not displayed.
  2
    Descriptive messages are shown as above (prefixed with a ‘#’), and ordinary commands performed by make(1) are displayed.
  3
    In addition to the above, all commands performed by make(1) are displayed, even if they would ordinarily have been hidden through use of the “@” prefix in the relevant makefile.
  4
    In addition to the above, commands executed by make(1) are traced through use of the sh(1) “`-x`” flag.

  Default: 2

MKATF
  Can be set to “yes” or “no”. Indicates whether the Automated Testing Framework is built and installed. This also controls whether the NetBSD test suite is built and installed, as the tests rely on ATF and cannot be built without it.

  Default: “yes”

MKBINUTILS
  Can be set to “yes” or “no”. Indicates whether any of the binutils tools or libraries should be built. That is, the libraries libbfd, libiberty, or any of the things that depend upon them, e.g. as(1), ld(1), dbsym(8), or mdsetimage(8).

  Default: “yes”

MKBSDTAR
  Can be set to “yes” or “no”. If “yes”, libarchive-based implementations of cpio(1) and tar(1) are built and installed. If “no”, pax(1) based frontends are used.

  Default: “no”

MKCATPAGES
  Can be set to “yes” or “no”. Indicates whether preformatted plaintext manual pages will be created and installed.

  Default: “no”

MKCLEANSRC
  Can be set to “yes” or “no”. Indicates whether ‘make clean’ and ‘make cleandir’ will delete file names in CLEANFILES or CLEANDIRFILES from both the object directory, .OBJDIR, and the source directory, .SRCDIR.

  If “yes”, then these file names will be deleted relative to both .OBJDIR and .CURDIR. If “no”, then the deletion will be performed relative to .OBJDIR only.

  Default: “yes”

MKCLEANVERIFY
  Can be set to “yes” or “no”. Controls whether ‘make clean’ and ‘make cleandir’ will verify that files have been deleted. If “yes”, then file deletions will be verified using ls(1). If “no”, then file deletions will not be verified.

  Default: “yes”

MKCOMPAT
  Can be set to “yes” or “no”. Indicates whether support for multiple ABIs is to be built and installed.

  Default: “yes” on amd64, mips64 and sparc64, “no” on other architectures.

MKCOMPLEX
  Can be set to “yes” or “no”. Indicates whether the Math Library (libm, -lm) is compiled with support for `<complex.h>`.

  Default: “yes”

MKCTF
  Can be set to “yes” or “no”. 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.

  Default: “no”

MKCVS
  Can be set to “yes” or “no”. Indicates whether cvs(1) is built.

  Default: “yes”

MKDEBUG
  Can be set to “yes” or “no”. Indicates whether separate debugging symbols should be installed into DESTDIR/usr/libdata/debug.

  Default: “no”

MKDEBUGLIB
  Can be set to “yes” or “no”. Indicates whether debug libraries (lib*_g.a) will be built and installed. Debug libraries are compiled with “`-g -DDEBUG`”.

  Default: “no”

MKDOC
  Can be set to “yes” or “no”. Indicates whether system documentation destined for DESTDIR/usr/share/doc will be installed.

  Default: “yes”

MKDTRACE
  Can be set to “yes” or “no”. Indicates whether the kernel modules, utilities and libraries for dtrace(1) support are to be built and installed.

  Default: “no”

MKDYNAMICROOT
  Can be set to “yes” or “no”. Indicates whether all programs should be dynamically linked, and to install shared libraries required by /bin and /sbin and the shared linker ld.elf_so(1) into /lib. If ‘no’, link programs in /bin and /sbin statically.

  Default: “yes”

MKGCC
  Can be set to “yes” or “no”. Indicates whether gcc(1) or any related libraries (libg2c, libgcc, libobjc, libstdc++) are built.

  Default: “yes”

MKGCCCMDS
  Can be set to “yes” or “no”. Indicates whether gcc(1) is built. If “no”, then MKGCC controls if the GCC libraries are built.

  Default: “yes”

MKGDB
  Can be set to “yes” or “no”. Indicates whether gdb(1) is built.

  Default: “yes”

MKHESIOD
  Can be set to “yes” or “no”. Indicates whether the Hesiod infrastructure (libraries and support programs) is built and installed.

  Default: “yes”

MKHOSTOBJ
  Can be set to “yes” or “no”. If set to “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 “make obj”. (This allows multiple host systems to compile NetBSD for a single target.) If set to “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.

  Default: “no”

MKHTML
  Can be set to “yes” or “no”. Indicates whether the HTML manual pages are created and installed.

  Default: “yes”

MKIEEEFP
  Can be set to “yes” or “no”. Indicates whether code for IEEE754/IEC60559 conformance is built. Has no effect on most platforms.

  Default: “yes”

MKINET6
  Indicates whether INET6 (IPv6) infrastructure (libraries and support programs) is built and installed.

  Default: “yes”

MKINFO
  Can be set to “yes” or “no”. Indicates whether GNU Info files, used for the documentation for most of the compilation tools, will be built and installed.

  Default: “yes”

MKIPFILTER
  Can be set to “yes” or “no”. Indicates whether the ipf(4) programs, headers and other components will be built and installed.

  Default: “yes”

MKISCSI
  Can be set to “yes” or “no”. Indicates whether the iSCSI library and applications are built and installed.

  Default: “yes”

MKKERBEROS
  Can be set to “yes” or “no”. Indicates whether the Kerberos v5 infrastructure (libraries and support programs) is built and installed. Caution: the default pam(8) configuration requires that Kerberos be present even if not used. Do not install a userland without Kerberos without also either updating the pam.conf(5) files or disabling PAM via MKPAM. Otherwise all logins will fail.

  Default: “yes”

MKKMOD
  Can be set to “yes” or “no”. Indicates whether kernel modules are built and installed.

  Default: “yes”

MKKYUA
  Can be set to “yes” or “no”. Indicates whether Kyua (the testing infrastructure used by NetBSD) is built and installed. Note that 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 MKATF knob.

  Default: “no” until the import of Kyua is done and validated.

MKLDAP
  Can be set to “yes” or “no”. Indicates whether the Lightweight Directory Access Protocol (LDAP) infrastructure (libraries and support programs) is built and installed.

  Default: “yes”

MKLINKLIB
  Can be set to “yes” or “no”. Indicates whether all of the shared library infrastructure is built. If ‘no’, prevents: installation of the *.a libraries, installation of the *_pic.a libraries on PIC systems, building of *.a libraries on PIC systems, or installation of .so symlinks on ELF systems.

  Default: “yes”

  If “no”, acts as MKPICINSTALL=no MKPROFILE=no.

MKLINT
  Can be set to “yes” or “no”. Indicates whether lint(1) will be run against portions of the NetBSD source code during the build, and whether lint libraries will be installed into DESTDIR/usr/libdata/lint.

  Default: “yes”

MKLVM
  Can be set to “yes” or “no”. If not “no”, build and install the logical volume manager.

  Default: “yes”

MKMAN
  Can be set to “yes” or “no”. Indicates whether manual pages will be installed.

  Default: “yes”

  If “no”, acts as MKCATPAGES=no MKHTML=no.

MKMANZ
  Can be set to “yes” or “no”. Indicates whether manual pages should be compressed with gzip(1) at installation time.

  Default: “no”

MKMDNS
  Can be set to “yes” or “no”. Indicates whether the mDNS (Multicast DNS) infrastructure (libraries and support programs) is built and installed.

  Default: “yes”

MKNLS
  Can be set to “yes” or “no”. Indicates whether Native Language System (NLS) locale zone files will be built and installed.

  Default: “yes”

MKNPF
  Can be set to “yes” or “no”. Indicates whether the NPF packet filter is to be built and installed.

  Default: “yes”

MKOBJ
  Can be set to “yes” or “no”. Indicates whether object directories will be created when running “make obj”. If set to “no”, then all built files will be located inside the regular source tree.

  Default: “yes”

  If “no”, acts as MKOBJDIRS=no.

MKOBJDIRS
  Can be set to “yes” or “no”. Indicates whether object directories will be created automatically (via a “make obj” pass) at the start of a build.

  Default: “no”

MKPAM
  Can be set to “yes” or “no”. Indicates whether the pam(8) framework (libraries and support files) is built. The pre-PAM code is not supported and may be removed in the future.

  Default: “yes”

MKPCC
  Can be set to “yes” or “no”. Indicates whether pcc(1) or any related libraries (libpcc, libpccsoftfloat) are built.

  Default: “no”

MKPF
  Can be set to “yes” or “no”. Indicates whether the pf(4) programs, headers and LKM will be built and installed.

  Default: “yes”

MKPIC
  Can be set to “yes” or “no”. Indicates whether shared objects and libraries will be created and installed. If set to “no”, the entire built system will be statically linked.

  Default: Platform dependent. As of this writing, all platforms except m68000 default to “yes”.

  If “no”, acts as MKPICLIB=no.

MKPICINSTALL
  Can be set to “yes” or “no”. Indicates whether the ar(1) format libraries (lib*_pic.a), used to generate shared libraries, are installed.

  Default: “yes”

MKPICLIB
  Can be set to “yes” or “no”. Indicates whether the ar(1) format libraries (lib*_pic.a), used to generate shared libraries.

  Default: “yes”

MKPIE
  Indicates whether Position Independent Executables (PIE) are built and installed.

  Default: “no”

MKPIGZGZIP
  Can be set to “yes” or “no”. If “no”, the pigz(1) utility is not installed as gzip(1).

  Default: “no”

MKPOSTFIX
  Can be set to “yes” or “no”. Indicates whether Postfix is built.

  Default: “yes”

MKPROFILE
  Can be set to “yes” or “no”. Indicates whether profiled libraries (lib*_p.a) will be built and installed.

  Default: “yes”; however, some platforms turn off MKPROFILE by default at times due to toolchain problems with profiled code.

MKREPRO
  Can be set to “yes” or “no”. Indicates whether builds are to be reproducible. If “yes”, two builds from the same source tree will produce the same build results.

  Default: “no”

MKRUMP
  Can be set to “yes” or “no”. Indicates whether the rump(3) headers, libraries and programs are to be installed.

  Default: “yes”

MKSHARE
  Can be set to “yes” or “no”. Indicates whether files destined to reside in DESTDIR/usr/share will be built and installed.

  Default: “yes”

  If “no”, acts as MKCATPAGES=no MKDOC=no MKINFO=no MKHTML=no MKMAN=no MKNLS=no.

MKSKEY
  Can be set to “yes” or “no”. Indicates whether the S/key infrastructure (libraries and support programs) is built.

  Default: “yes”

MKSOFTFLOAT
  Can be set to “yes” or “no”. Indicates whether the compiler generates output containing library calls for floating point and possibly soft-float library support.

  Default: “no”

MKSTATICLIB
  Can be set to “yes” or “no”. Indicates whether the normal static libraries (lib*_g.a) will be built and installed.

  Default: “yes”

MKSTRIPIDENT
  Can be set to “yes” or “no”. Indicates whether RCS IDs, for use with ident(1), should be stripped from program binaries and shared libraries.

  Default: “no”

MKSTRIPSYM
  Can be set to “yes” or “no”. Indicates whether all local symbols should be stripped from shared libraries. If “yes”, strip all local symbols from shared libraries; the affect is equivalent to the `-x` option of ld(1). If “no”, strip only temporary local symbols; the affect is equivalent to the `-X` option of 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.

  Default: “yes”

MKUNPRIVED
  Can be set to “yes” or “no”. 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 METALOG in DESTDIR. The contents of METALOG is used during the generation of the distribution tar files to ensure that the appropriate file ownership is stored.

  Default: “no”

MKUPDATE
  Can be set to “yes” or “no”. Indicates whether all install operations intended to write to 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).

  Default: “no”

MKX11
  Can be set to “yes” or “no”. Indicates whether X11 is built and installed (by descending into src/external/mit/xorg).

  Default: “no”

MKX11FONTS
  Can be set to “yes” or “no”. If “no”, do not build and install the X fonts.

  Default: “yes”

X11MOTIFPATH
  Location of the Motif installation to use if setting MKX11MOTIF to “yes”.

  Default: /usr/pkg

MKX11MOTIF
  Can be set to “yes” or “no”. If “yes”, build the native Xorg libGLw with Motif stubs. Requires that Motif can be found via X11MOTIFPATH.

  Default: “no”

MKYP
  Can be set to “yes” or “no”. Indicates whether the YP (NIS) infrastructure (libraries and support programs) is built.

  Default: “yes”

MKZFS
  Can be set to “yes” or “no”. Indicates whether the ZFS kernel module and the utilities and libraries used to manage the ZFS system are to be built.

  Default: “yes” on amd64, “no” on other architectures.

OBJMACHINE
  If defined, creates objdirs of the form obj.MACHINE, where MACHINE is the current architecture (as per ‘uname -m’).
RELEASEDIR
  If set, specifies the directory to which a release(7) layout will be written at the end of a “make release”.

  Default: Unset.

  Note: build.sh will provide a default of releasedir (in the top-level .OBJDIR) unless run in ‘expert’ mode

TOOLDIR
  Directory to hold the host tools, once built. This directory should be unique to a given host system and NetBSD source tree. (However, multiple targets may share the same TOOLDIR; the target-dependent files have unique names.) If unset, a default based on the uname(1) information of the host platform will be created in the .OBJDIR of src.

  Default: Unset.

USE_FORT
  Indicates whether the so-called “FORTIFY_SOURCE” security(7) extensions are enabled; see ssp(3) for details. This imposes some performance penalty.

  Default: “no”

USE_HESIOD
  Can be set to “yes” or “no”. Indicates whether Hesiod support is enabled in the various applications that support it. If MKHESIOD=no, USE_HESIOD will also be forced to “no”.

  Default: “yes”

USE_INET6
  Can be set to “yes” or “no”. Indicates whether INET6 (IPv6) support is enabled in the various applications that support it. If MKINET6=no, USE_INET6 will also be forced to “no”.

  Default: “yes”

USE_JEMALLOC
  Can be set to “yes” or “no”. Indicates whether the jemalloc allocator (which is designed for improved performance with threaded applications) is used instead of the phkmalloc allocator (that was the default until NetBSD 5.0).

  Default: “yes”

USE_KERBEROS
  Can be set to “yes” or “no”. Indicates whether Kerberos v5 support is enabled in the various applications that support it. If MKKERBEROS=no, USE_KERBEROS will also be forced to “no”.

  Default: “yes”

USE_LDAP
  Can be set to “yes” or “no”. Indicates whether LDAP support is enabled in the various applications that support it. If MKLDAP=no, USE_LDAP will also be forced to “no”.

  Default: “yes”

USE_PAM
  Can be set to “yes” or “no”. Indicates whether pam(8) support is enabled in the various applications that support it. If MKPAM=no, USE_PAM will also be forced to “no”.

  Default: “yes”

USE_SKEY
  Can be set to “yes” or “no”. Indicates whether S/key support is enabled in the various applications that support it. If MKSKEY=no, USE_SKEY will also be forced to “no”.

  Default: “yes”

  This is mutually exclusive to USE_PAM!=no.

USE_SSP
  Can be set to “yes” or “no”. Indicates whether GCC stack-smashing protection (SSP) support, which detects stack overflows and aborts the program, is enabled. This imposes some performance penalty.

  Default: “no”

USE_YP
  Can be set to “yes” or “no”. Indicates whether YP (NIS) support is enabled in the various applications that support it. If MKYP=no, USE_YP will also be forced to “no”.

  Default: “yes”

USETOOLS
  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.
  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: “yes” if building all or part of a whole NetBSD source tree (detected automatically); “no” otherwise (to preserve traditional semantics of the ⟨bsd.*.mk⟩ make(1) include files).

## pkgsrc system variables

Please see the pkgsrc guide at http://www.netbsd.org/Documentation/pkgsrc/ or pkgsrc/doc/pkgsrc.txt for more variables used internally by the package system and ${PKGSRCDIR}/mk/defaults/mk.conf for package-specific examples.

# FILES

/etc/mk.conf
  This file.
${PKGSRCDIR}/mk/defaults/mk.conf
  Examples for settings regarding the pkgsrc collection.

# SEE ALSO

make(1), /usr/share/mk/bsd.README, pkgsrc/doc/pkgsrc.txt, http://www.netbsd.org/Documentation/pkgsrc/

# HISTORY

The `mk.conf` file appeared in NetBSD 1.2.

September 16, 2019 | NetBSD 9.2