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     make.conf -- system build information


     The file make.conf contains settings that control the compilation of the
     FreeBSD sources and ported applications.  The file make.conf is generally
     created by the system administrator when the values need to be changed
     from their defaults.

     The purpose of make.conf is not to run commands or perform compilation
     actions directly.	Instead, it is included by the various makefiles in
     /usr/src, /usr/ports and /usr/doc which conditionalize their internal
     actions according to the settings found there.

     The /etc/make.conf file is included from the appropriate Makefile which
     specifies the default settings for all the available options.  Options
     need only be specified in /etc/make.conf when the system administrator
     wishes to override these defaults.

     The build procedures occur in four broad areas: the world, the kernel,
     documentations and ports.	Variables set in make.conf may be applicable
     during builds in one, two, or all four of these areas.  They may be spec-
     ified for a particular build via the -D option of make(1).

     The following lists provide a name and short description for each vari-
     able 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.

		   (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 build-
		   world targets to handle upgrades from older versions of

     CFLAGS	   (str) Controls the compiler setting when compiling C code.
		   Optimization levels other than -O and -O2 are not sup-
		   ported.  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:


     CPUTYPE	   (str) Controls which processor should be targeted for gen-
		   erated code.  This controls processor-specific optimiza-
		   tions 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 auto-
		   matic 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.
		   piler flags from being automatically added to COPTFLAGS
		   during compile time.

     CVS_UPDATE    (bool) Set this to use cvs(1) to update your ports with
		   ``make update''.

     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="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.


		   (str) Set this to ``-L'' to cause mtree(8) to follow sym-

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

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

     SUP_UPDATE    (bool) Set this to use cvsup(1) to update your ports with
		   ``make update''.

     SUP	   (str) The location of the cvsup(1) command for ``make

     SUPFLAGS	   (str) The flag for the sup(1) command when doing ``make
		   update''.  This defaults to [-g -L 2].

     SUPHOST	   (str) The hostname of the sup server to use when doing
		   ``make update''.

     SUPFILE	   (str) The first supfile to use when doing a ``make
		   update''.  This defaults to

     SUPFILE1	   (str) The second supfile to use when doing a ``make
		   update''.  This defaults to

     DOCSUPFILE    (str) The documentation supfile to use when doing a ``make
		   update''.  This defaults to

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

		   (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.

		   (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.

     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 ker-
		   nel.  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,


		   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.

		   (bool) While not a buildkernel-affected option, there is no
		   better place for this.  By default the pxeboot(8) loader
		   retrieves the kernel via NFS.  Defining this and recompil-
		   ing /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.

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

		   (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.


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

     COMPAT1X	   (bool) Set to install the FreeBSD 1 compatibility

     COMPAT20	   (bool) Set to install the FreeBSD 2.0 compatibility

     COMPAT21	   (bool) Set to install the FreeBSD 2.1 compatibility

     COMPAT22	   (bool) Set to install the FreeBSD 2.2 compatibility

     COMPAT3X	   (bool) Set to install the FreeBSD 3 compatibility

     COMPAT4X	   (bool) Set to install the FreeBSD 4 compatibility

     MAKE_IDEA	   (bool) Set to build the IDEA encryption code.  This code is
		   patented in the USA and many European countries.  It is
		   YOUR RESPONSIBILITY to determine if you can legally use

		   (bool) Set this if you do not want to link /bin and /sbin

     NO_KERBEROS   (bool) Set this if you do not want to build Kerberos 5 (KTH

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

		   (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.

		   (bool) Set this to install ssh(1) with the set-user-ID bit
		   turned on.

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

     NO_BLUETOOTH  (bool) Set to not build Bluetooth related kernel modules,
		   programs and libraries.

     NO_BOOT	   (bool) Set to not build the boot blocks and loader.

     NO_CVS	   (bool) Set to not build CVS.

     NO_I4B	   (bool) Set to not build isdn4bsd package.

     NO_IPFILTER   (bool) Set to not build IP Filter package.

     NO_PF	   (bool) Set to not build PF firewall package.

     NO_AUTHPF	   (bool) Set to not build authpf(8).

     NO_TOOLCHAIN  (bool) Set to not build programs used for program develop-
		   ment, compilers, debuggers etc.

     NOINET6	   (bool) Set to not build programs and libraries related to
		   IPv6 networking.

     NOATM	   (bool) Set to not build programs and libraries related to
		   ATM networking.

     NO_USB	   (bool) Set to not build usbd(8) and related programs.

     NO_LIB32	   (bool) Set to not build the 32-bit versions of system
		   libraries on 64-bit systems.

     NO_LPR	   (bool) Set to not build lpr(1) and related programs.

     NO_ACPI	   (bool) Set to not build acpiconf(8), acpidump(8) and
		   related programs.

     NO_VINUM	   (bool) Set to not build vinum(8) and related programs.

		   (bool) Set to not build the mailwrapper(8) MTA selector.

     NOMAN	   (bool) Set to not build manual pages.

     NO_NETCAT	   (bool) Set to not build nc(1) utility.

     NO_NIS	   (bool) Set to not build NIS(8) support and related pro-

     NO_OBJC	   (bool) Set to not build Objective C support.

     NO_OPENSSH    (bool) Set to not build OpenSSH.

     NO_OPENSSL    (bool) Set to not build OpenSSL (implies NO_KERBEROS and

     NO_SENDMAIL   (bool) Set to not build sendmail(8) and related programs.

     NO_SHAREDOCS  (bool) Set to not build the 4.4BSD legacy docs.

     NO_TCSH	   (bool) Set to not build and install /bin/csh (which is

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

     NOCLEANDIR    (bool) Set this to run ``${MAKE} clean'' instead of
     NOLIBC_R	   (bool) Set to not build libc_r (reentrant version of libc).

     NOLIBPTHREAD  (bool) Set to not build the libpthread (M:N threading)

     NOLIBTHR	   (bool) Set to not build the libthr (1:1 threading) library.

		   (bool) Set to install man pages uncompressed.

     NOPROFILE	   (bool) Set to avoid compiling profiled libraries.

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

     NO_BIND	   (bool) Setting this variable will prevent any part of BIND
		   from being built, regardless of the presence of any of the
		   other *_BIND_* variables below.

		   (bool) Set to avoid building or installing the DNSSEC
		   related binaries, dnssec-keygen(8) and dnssec-signzone(8).

     NO_BIND_ETC   (bool) Set to avoid installing the default files to

		   (bool) Set to avoid installing the lightweight resolver
		   library in /usr/lib.  The library that is private to the
		   build system may still be built as needed.

		   (bool) Set to avoid running mtree(8) to create the chroot
		   directory structure under /var/named, and avoid creating an
		   /etc/namedb symlink to the chroot directory.  This option
		   should typically be used together with NO_BIND_ETC.

		   (bool) Set to avoid building or installing named(8),
		   named.reload(8), named-checkconf(8), named-checkzone(8),
		   rndc(8), and rndc-confgen(8).

		   (bool) Set to avoid building or installing the BIND user-
		   land utilities, dig(1), host(1), nslookup(1), and

		   (bool) Set to install BIND libraries and include files.

     PPP_NOSUID    (bool) Set to disable the installation of ppp(8) as an suid
		   root program.

     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 cau-
		   tion as a make install will overwrite any existing
		   /etc/mail/sendmail.cf.  Note that SENDMAIL_CF is now depre-
		   (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

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

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

		   (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

		   (str) Flags to pass to the ld(1) command when building

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

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

		   (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 recom-
		   mended and the alternative advice in /etc/mail/README
		   should be followed instead if at all possible.

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

		   (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 approxi-
		   mately twice as large as the number of lines in
		   /etc/passwd.  The default number is 20011.

		   (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 vari-
		   ous times -- this is worse on the Alpha platform.  The
		   value assigned is the highest optimization value used.

		   (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.




     gcc(1), install(1), make(1), ports(7), lpd(8), sendmail(8)


     The make.conf file appeared sometime before FreeBSD 4.0.


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


     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


     Note, that MAKEOBJDIRPREFIX and MAKEOBJDIR are environment variables and
     should not be set in make.conf but in make's environment.

FreeBSD 5.4		       January 13, 2005 		   FreeBSD 5.4


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