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MAKE.CONF(5)              FreeBSD File Formats Manual             MAKE.CONF(5)

NAME
     make.conf - system build information

DESCRIPTION
     The file make.conf contains system-wide settings that will apply to every
     build using make(1) and the standard sys.mk file.  This is achieved as
     follows: make(1) processes the system makefile sys.mk before any other
     file by default, and sys.mk includes make.conf.

     The file make.conf uses the standard makefile syntax.  However, make.conf
     should not specify any dependencies to make(1).  Instead, make.conf is to
     set make(1) variables that control the actions of other makefiles.

     The default location of make.conf is /etc/make.conf, though an
     alternative location can be specified in the make(1) variable
     __MAKE_CONF.  You may need to override the location of make.conf if the
     system-wide settings are not suitable for a particular build.  For
     instance, setting __MAKE_CONF to /dev/null effectively resets all build
     controls to their defaults.

     The primary purpose of make.conf is to control the compilation of the
     FreeBSD sources, documentation, and ported applications, which are
     usually found in /usr/src, /usr/doc, and /usr/ports.  As a rule, the
     system administrator creates make.conf when the values of certain control
     variables need to be changed from their defaults.

     The system build procedures occur in four broad areas: the world, the
     kernel, documentation and ports.  Variables set in make.conf may be
     applicable in one, two, or all four of these areas.  In addition, control
     variables can be specified for a particular build via the -D option of
     make(1) or in environ(7).

     The following lists provide a name and short description for each
     variable you can use during the indicated builds.  The values of
     variables flagged as bool are ignored; the variable being set at all
     (even to ``FALSE'' or ``NO'') causes it to be treated as if it were set.

     The following list provides a name and short description for variables
     that are used for all builds, or are used by the makefiles for things
     other than builds.

     ALWAYS_CHECK_MAKE
                   (bool) Instructs the top-level makefile in the source tree
                   (normally /usr/src) to always check if make(1) is up-to-
                   date.  Normally this is only done for the world and
                   buildworld targets to handle upgrades from older versions
                   of FreeBSD.

     CFLAGS        (str) Controls the compiler setting when compiling C code.
                   Optimization levels other than -O and -O2 are not
                   supported.  BDECFLAGS is provided as a set of gcc(1)
                   settings suggested by Bruce Evans <bde@FreeBSD.org> for
                   developing and testing changes.  They can be used, if set,
                   by:

                         CFLAGS+=${BDECFLAGS}

     CPUTYPE       (str) Controls which processor should be targeted for
                   generated code.  This controls processor-specific
                   optimizations in certain code (currently only OpenSSL) as
                   well as modifying the value of CFLAGS and COPTFLAGS to
                   contain the appropriate optimization directive to gcc(1).
                   The automatic setting of CFLAGS and COPTFLAGS may be
                   overridden using the NO_CPU_CFLAGS and NO_CPU_COPTFLAGS
                   variables, respectively.  Refer to
                   /usr/share/examples/etc/make.conf for a list of recognized
                   CPUTYPE options.

     CXXFLAGS      (str) Controls the compiler settings when compiling C++
                   code.  CXXFLAGS is initially set to the value of CFLAGS.
                   If you want to add to the CXXFLAGS value, use ``+=''
                   instead of ``=''.

     INSTALL       (str) the default install command.  To install only files
                   for which the target differs or does not exist, use

                         INSTALL+= -C
                   Note that some makefiles (including those in /usr/share/mk)
                   may hardcode options for the supplied install command.

     LOCAL_DIRS    (str) List any directories that should be entered when
                   doing make's in /usr/src in this variable.

     MAKE_SHELL    (str) Controls the shell used internally by make(1) to
                   process the command scripts in makefiles.  sh(1), ksh(1),
                   and csh(1) all currently supported.

                         MAKE_SHELL?=sh

     MTREE_FOLLOWS_SYMLINKS
                   (str) Set this to ``-L'' to cause mtree(8) to follow
                   symlinks.

     NO_CPU_CFLAGS
                   (str) Setting this variable will prevent CPU specific
                   compiler flags from being automatically added to CFLAGS
                   during compile time.

     NO_CPU_COPTFLAGS
                   (str) Setting this variable will prevent CPU specific
                   compiler flags from being automatically added to COPTFLAGS
                   during compile time.

     NO_DOCUPDATE  (bool) Set this to not update the doc tree during ``make
                   update''.

     NO_PORTSUPDATE
                   (bool) Set this to not update the ports tree during ``make
                   update''.

     SVN_UPDATE    (bool) Set this to use svn(1) to update your src tree with
                   ``make update''.  Note that since a subversion client is
                   not included in the base system, you will need to set SVN
                   to the full path of a svn(1) binary.

   BUILDING THE KERNEL
     The following list provides a name and short description for variables
     that are only used doing a kernel build:

     BOOTWAIT      (int) Controls the amount of time the kernel waits for a
                   console keypress before booting the default kernel.  The
                   value is approximately milliseconds.  Keypresses are
                   accepted by the BIOS before booting from disk, making it
                   possible to give custom boot parameters even when this is
                   set to 0.

     COPTFLAGS     (str) Controls the compiler settings when building the
                   kernel.  Optimization levels above [-O (-O2, ...)] are not
                   guaranteed to work.

     KERNCONF      (str) Controls which kernel configurations will be built by
                   ``${MAKE} buildkernel'' and installed by ``${MAKE}
                   installkernel''.  For example,

                         KERNCONF=MINE DEBUG GENERIC OTHERMACHINE

                   will build the kernels specified by the config files MINE,
                   DEBUG, GENERIC, and OTHERMACHINE, and install the kernel
                   specified by the config file MINE.  It defaults to GENERIC.

     MODULES_OVERRIDE
                   (str) Set to a list of modules to build instead of all of
                   them.

     NO_KERNELCLEAN
                   (bool) Set this to skip running ``${MAKE} clean'' during
                   ``${MAKE} buildkernel''.

     NO_KERNELCONFIG
                   (bool) Set this to skip running config(8) during ``${MAKE}
                   buildkernel''.

     NO_KERNELDEPEND
                   (bool) Set this to skip running ``${MAKE} depend'' during
                   ``${MAKE} buildkernel''.

     NO_KERNELOBJ  (bool) Set this to skip running ``${MAKE} obj'' during
                   ``${MAKE} buildkernel''.

     NO_MODULES    (bool) Set to not build modules with the kernel.

     PORTS_MODULES
                   Set this to the list of ports you wish to rebuild every
                   time the kernel is built.

     WITHOUT_MODULES
                   (str) Set to a list of modules to exclude from the build.
                   This provides a somewhat easier way to exclude modules you
                   are certain you will never need than specifying
                   MODULES_OVERRIDE.  This is applied after MODULES_OVERRIDE.

   BUILDING THE WORLD
     The following list provides a name and short description for variables
     that are used during the world build:

     BOOT_COMCONSOLE_PORT
                   (str) The port address to use for the console if the boot
                   blocks have been configured to use a serial console instead
                   of the keyboard/video card.

     BOOT_COMCONSOLE_SPEED
                   (int) The baud rate to use for the console if the boot
                   blocks have been configured to use a serial console instead
                   of the keyboard/video card.

     BOOT_PXELDR_ALWAYS_SERIAL
                   (bool) Compile in the code into pxeboot(8) that forces the
                   use of a serial console.  This is analogous to the -h
                   option in boot(8) blocks.

     BOOT_PXELDR_PROBE_KEYBOARD
                   (bool) Compile in the code into pxeboot(8) that probes the
                   keyboard.  If no keyboard is found, boot with the dual
                   console configuration.  This is analogous to the -D option
                   in boot(8) blocks.

     ENABLE_SUID_K5SU
                   (bool) Set this if you wish to use the ksu utility.
                   Otherwise, it will be installed without the set-user-ID bit
                   set.

     ENABLE_SUID_NEWGRP
                   (bool) Set this to install newgrp(1) with the set-user-ID
                   bit set.  Otherwise, newgrp(1) will not be able to change
                   users' groups.

     LOADER_TFTP_SUPPORT
                   (bool) By default the pxeboot(8) loader retrieves the
                   kernel via NFS.  Defining this and recompiling
                   /usr/src/sys/boot will cause it to retrieve the kernel via
                   TFTP.  This allows pxeboot(8) to load a custom BOOTP
                   diskless kernel yet still mount the server's / rather than
                   load the server's kernel.

     LOADER_FIREWIRE_SUPPORT
                   (bool) Defining this and recompiling /usr/src/sys/boot/i386
                   will add dcons(4) console driver to loader(8) and allow
                   access over FireWire(IEEE1394) using dconschat(8).
                   Currently, only i386 and amd64 are supported.

     MALLOC_PRODUCTION
                   (bool) Set this to disable assertions and statistics
                   gathering in malloc(3).  It also defaults the A and J
                   runtime options to off.  Disabled by default on -CURRENT.

     MODULES_WITH_WORLD
                   (bool) Set to build modules with the system instead of the
                   kernel.

     NO_CLEAN      (bool) Set this to disable cleaning during ``make
                   buildworld''.  This should not be set unless you know what
                   you are doing.

     NO_CLEANDIR   (bool) Set this to run ``${MAKE} clean'' instead of
                   ``${MAKE} cleandir''.

     NO_MANCOMPRESS
                   (bool) Set to install manual pages uncompressed.

     NO_SHARE      (bool) Set to not build in the share subdir.

     NO_SHARED     (bool) Set to build /bin and /sbin statically linked, this
                   can be bad.  If set, every utility that uses bsd.prog.mk
                   will be linked statically.

     PPP_NO_NAT    (bool) Build ppp(8) without support for network address
                   translation (NAT).

     PPP_NO_NETGRAPH
                   (bool) Set to build ppp(8) without support for Netgraph.

     PPP_NO_RADIUS
                   (bool) Set to build ppp(8) without support for RADIUS.

     PPP_NO_SUID   (bool) Set to disable the installation of ppp(8) as a set-
                   user-ID root program.

     SENDMAIL_ADDITIONAL_MC
                   (str) Additional .mc files which should be built into .cf
                   files at build time.  The value should include the full
                   path to the .mc file(s), e.g., /etc/mail/foo.mc,
                   /etc/mail/bar.mc.

     SENDMAIL_ALIASES
                   (str) List of aliases(5) files to rebuild when using
                   /etc/mail/Makefile.  The default value is
                   /etc/mail/aliases.

     SENDMAIL_CFLAGS
                   (str) Flags to pass to the compile command when building
                   sendmail(8).  The SENDMAIL_* flags can be used to provide
                   SASL support with setting such as:

                         SENDMAIL_CFLAGS=-I/usr/local/include -DSASL
                         SENDMAIL_LDFLAGS=-L/usr/local/lib
                         SENDMAIL_LDADD=-lsasl

     SENDMAIL_CF_DIR
                   (str) Override the default location for the m4(1)
                   configuration files used to build a .cf file from a .mc
                   file.

     SENDMAIL_DPADD
                   (str) Extra dependencies to add when building sendmail(8).

     SENDMAIL_LDADD
                   (str) Flags to add to the end of the ld(1) command when
                   building sendmail(8).

     SENDMAIL_LDFLAGS
                   (str) Flags to pass to the ld(1) command when building
                   sendmail(8).

     SENDMAIL_M4_FLAGS
                   (str) Flags passed to m4(1) when building a .cf file from a
                   .mc file.

     SENDMAIL_MAP_PERMS
                   (str) Mode to use when generating alias and map database
                   files using /etc/mail/Makefile.  The default value is 0640.

     SENDMAIL_MAP_SRC
                   (str) Additional maps to rebuild when using
                   /etc/mail/Makefile.  The access, bitdomain, domaintable,
                   genericstable, mailertable, uucpdomain, and virtusertable
                   maps are always rebuilt if they exist.

     SENDMAIL_MAP_TYPE
                   (str) Database map type to use when generating map database
                   files using /etc/mail/Makefile.  The default value is hash.
                   The alternative is btree.

     SENDMAIL_MC   (str) The default m4(1) configuration file to use at
                   install time.  The value should include the full path to
                   the .mc file, e.g., /etc/mail/myconfig.mc.  Use with
                   caution as a make install will overwrite any existing
                   /etc/mail/sendmail.cf.  Note that SENDMAIL_CF is now
                   deprecated.

     SENDMAIL_SET_USER_ID
                   (bool) If set, install sendmail(8) as a set-user-ID root
                   binary instead of a set-group-ID binary and do not install
                   /etc/mail/submit.{cf,mc}.  Use of this flag is not
                   recommended and the alternative advice in /etc/mail/README
                   should be followed instead if at all possible.

     SENDMAIL_START_SCRIPT
                   (str) The script used by /etc/mail/Makefile to start, stop,
                   and restart sendmail(8).  The default value is
                   /etc/rc.sendmail.  This value should match the
                   ``mta_start_script'' setting in rc.conf(5).

     SENDMAIL_SUBMIT_MC
                   (str) The default m4(1) configuration file for mail
                   submission to use at install time.  The value should
                   include the full path to the .mc file, e.g.,
                   /etc/mail/mysubmit.mc.  Use with caution as a make install
                   will overwrite any existing /etc/mail/submit.cf.

     TOP_TABLE_SIZE
                   (int) top(1) uses a hash table for the user names.  The
                   size of this hash can be tuned to match the number of local
                   users.  The table size should be a prime number
                   approximately twice as large as the number of lines in
                   /etc/passwd.  The default number is 20011.

     WANT_FORCE_OPTIMIZATION_DOWNGRADE
                   (int) Causes the system compiler to be built such that it
                   forces high optimization levels to a lower one.  gcc(1) -O2
                   and above is known to trigger known optimizer bugs at
                   various times.  The value assigned is the highest
                   optimization value used.

   BUILDING DOCUMENTATION
     The following list provides a name and short description for variables
     that are used when building documentation.

     DISTDIR            (str) Where distfiles are kept.  Normally, this is
                        distfiles in PORTSDIR.

     DOC_LANG           (str) The list of languages and encodings to build and
                        install.

     PRINTERDEVICE      (str) The default format for system documentation,
                        depends on your printer.  This can be set to ``ascii''
                        for simple printers, or ``ps'' for postscript or
                        graphics printers with a ghostscript filter, or both.

   BUILDING PORTS
     Several make variables can be set that affect the building of ports.
     These variables and their effects are documented in ports(7),
     ${PORTSDIR}/Mk/* and the FreeBSD Porter's Handbook.

FILES
     /etc/make.conf
     /usr/doc/Makefile
     /usr/ports/Makefile
     /usr/share/examples/etc/make.conf
     /usr/share/mk/sys.mk
     /usr/src/Makefile
     /usr/src/Makefile.inc1

SEE ALSO
     gcc(1), install(1), make(1), src.conf(5), environ(7), ports(7),
     sendmail(8)

HISTORY
     The make.conf file appeared sometime before FreeBSD 4.0.

AUTHORS
     This manual page was written by Mike W. Meyer <mwm@mired.org>.

CAVEATS
     Note, that MAKEOBJDIRPREFIX and MAKEOBJDIR are environment variables and
     should not be set in make.conf or as command line arguments to make(1),
     but in make's environment.

BUGS
     This manual page may occasionally be out of date with respect to the
     options currently available for use in make.conf.  Please check the
     /usr/share/examples/etc/make.conf file for the latest options which are
     available.

FreeBSD 11.0-PRERELEASE          May 17, 2014          FreeBSD 11.0-PRERELEASE

NAME | DESCRIPTION | FILES | SEE ALSO | HISTORY | AUTHORS | CAVEATS | BUGS

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