.\" Copyright (c) 2000
.\"	Mike W. Meyer
.\"
.\" 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 AUTHOR ``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 AUTHOR 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.
.\"
.\" $FreeBSD$
.\"
.Dd October 22, 2005
.Dt MAKE.CONF 5
.Os
.Sh NAME
.Nm make.conf
.Nd system build information
.Sh DESCRIPTION
The file
.Nm
contains system-wide settings that will apply to every build using
.Xr make 1
and the standard
.Pa sys.mk
file.
This is achieved as follows:
.Xr make 1
processes the system makefile
.Pa sys.mk
before any other file by default, and
.Pa sys.mk
includes
.Nm .
.Pp
The file
.Nm
uses the standard makefile syntax.
However,
.Nm
should not specify any dependencies to
.Xr make 1 .
Instead,
.Nm
is to set
.Xr make 1
variables that control the actions of other makefiles.
.Pp
The default location of
.Nm
is
.Pa /etc/make.conf ,
though an alternative location can be specified in the
.Xr make 1
variable
.Va __MAKE_CONF .
You may need to override the location of
.Nm
if the system-wide settings are not suitable for a particular build.
For instance, setting
.Va __MAKE_CONF
to
.Pa /dev/null
effectively resets all build controls to their defaults.
.Pp
The primary purpose of
.Nm
is to control the compilation of the
.Fx
sources, documentation, and ported applications,
which are usually found in
.Pa /usr/src ,
.Pa /usr/doc ,
and
.Pa /usr/ports .
As a rule, the system administrator creates
.Nm
when the values of certain control variables need to be changed
from their defaults.
.Pp
The system build procedures occur in four broad areas:
the world, the kernel, documentation and ports.
Variables set in
.Nm
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
.Fl D
option of
.Xr make 1
or in
.Xr environ 7 .
.Pp
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
.Vt bool
are ignored; the variable being
set at all (even to
.Dq Li FALSE
or
.Dq Li NO )
causes it to
be treated as if it were set.
.Pp
The following list provides a name and short description for variables
that are used for all builds, or are used by the
.Pa makefiles
for things other than builds.
.Bl -tag -width Ar
.It Va ALWAYS_CHECK_MAKE
.Pq Vt bool
Instructs the top-level makefile in the source tree (normally
.Pa /usr/src )
to always check if
.Xr make 1
is up-to-date.
Normally this is only done for the world and buildworld targets to handle
upgrades from older versions of
.Fx .
.It Va CFLAGS
.Pq Vt str
Controls the compiler setting when compiling C code.
Optimization levels other than
.Fl O
and
.Fl O2
are not supported.
.Va BDECFLAGS
is provided as a set of
.Xr gcc 1
settings suggested by
.An "Bruce Evans" Aq bde@FreeBSD.org
for developing and testing changes.
They can be used, if set, by:
.Pp
.Bd -literal -offset indent
CFLAGS+=${BDECFLAGS}
.Ed
.It Va CPUTYPE
.Pq Vt 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
.Va CFLAGS
and
.Va COPTFLAGS
to contain the appropriate optimization directive to
.Xr gcc 1 .
The automatic setting of
.Va CFLAGS
and
.Va COPTFLAGS
may be overridden using the
.Va NO_CPU_CFLAGS
and
.Va NO_CPU_COPTFLAGS
variables, respectively.
Refer to
.Pa /usr/share/examples/etc/make.conf
for a list of recognized
.Va CPUTYPE
options.
.It Va CVS_UPDATE
.Pq Vt bool
Set this to use
.Xr cvs 1
to update your ports with
.Dq Li "make update" .
.It Va CXXFLAGS
.Pq Vt str
Controls the compiler settings when compiling C++ code.
.Va CXXFLAGS
is initially set to the value of
.Va CFLAGS .
If you want to
add to the
.Va CXXFLAGS
value, use
.Dq Li +=
instead of
.Dq Li = .
.It Va DOCSUPFILE
.Pq Vt str
The documentation
.Ar supfile
to use when doing a
.Dq Li "make update" .
This defaults to
.Pa /usr/share/examples/cvsup/doc\-supfile .
.It Va INSTALL
.Pq Vt str
the default install command.
To install only files for which the target differs or does not exist, use
.Bd -literal -offset indent
INSTALL="install -C"
.Ed
Note that some makefiles (including those in
.Pa /usr/share/mk )
may hardcode options for the supplied install command.
.It Va LOCAL_DIRS
.Pq Vt str
List any directories that should be entered when doing
make's in
.Pa /usr/src
in this variable.
.It Va MAKE_SHELL
.Pq Vt str
Controls the shell used internally by
.Xr make 1
to process the command scripts in makefiles.
.Xr sh 1 ,
.Xr ksh 1 ,
and
.Xr csh 1
all currently supported.
.Pp
.Dl "MAKE_SHELL?=sh"
.It Va MTREE_FOLLOWS_SYMLINKS
.Pq Vt str
Set this to
.Dq Fl L
to cause
.Xr mtree 8
to follow symlinks.
.It Va NO_CPU_CFLAGS
.Pq Vt str
Setting this variable will prevent CPU specific compiler flags
from being automatically added to
.Va CFLAGS
during compile time.
.It Va NO_CPU_COPTFLAGS
.Pq Vt str
Setting this variable will prevent CPU specific compiler flags
from being automatically added to
.Va COPTFLAGS
during compile time.
.It Va NO_DOCUPDATE
.Pq Vt bool
Set this to not update the doc tree during
.Dq Li "make update" .
.It Va NO_PORTSUPDATE
.Pq Vt bool
Set this to not update the ports tree during
.Dq Li "make update" .
.It Va PORTSSUPFILE
.Pq Vt str
The ports
.Ar supfile
to use when doing a
.Dq Li "make update" .
This defaults to
.Pa /usr/share/examples/cvsup/ports\-supfile .
.It Va SUP
.Pq Vt str
The location of the
.Xr cvsup 1
command for
.Dq Li "make update" .
.It Va SUPFILE
.Pq Vt str
The first
.Ar supfile
to use when doing a
.Dq Li "make update" .
This defaults to
.Pa /usr/share/examples/cvsup/standard\-supfile .
.It Va SUPFILE1
.Pq Vt str
The second
.Ar supfile
to use when doing a
.Dq Li "make update" .
This defaults to
.Pa /usr/share/examples/cvsup/secure\-supfile .
.It Va SUPFILE2
.Pq Vt str
The third
.Ar supfile
to use when doing a
.Dq Li "make update" .
This defaults to
.Pa /usr/share/examples/cvsup/secure\-supfile .
.It Va SUPFLAGS
.Pq Vt str
The flag for the
.Xr sup 1
command when doing
.Dq Li "make update" .
This defaults to
.Op Fl g L Ar 2 .
.It Va SUPHOST
.Pq Vt str
The hostname of the sup server to use when doing
.Dq Li "make update" .
.It Va SUP_UPDATE
.Pq Vt bool
Set this to use
.Xr cvsup 1
to update your ports with
.Dq Li "make update" .
.El
.Ss "BUILDING THE KERNEL"
.Pp
The following list provides a name and short description for variables
that are only used doing a kernel build:
.Bl -tag -width Ar
.It Va BOOTWAIT
.Pq Vt 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.
.It Va BOOT_COMCONSOLE_PORT
.Pq Vt 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.
.It Va BOOT_COMCONSOLE_SPEED
.Pq Vt 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.
.It Va COPTFLAGS
.Pq Vt str
Controls the compiler settings when building the
kernel.
Optimization levels above
.Oo Fl O ( O2 , No ...\& ) Oc
are not guaranteed to work.
.It Va KERNCONF
.Pq Vt str
Controls which kernel configurations will be
built by
.Dq Li "${MAKE} buildkernel"
and installed by
.Dq Li "${MAKE} installkernel" .
For example,
.Bd -literal -offset indent
KERNCONF=MINE DEBUG GENERIC OTHERMACHINE
.Ed
.Pp
will build the kernels specified by the config files
.Pa MINE , DEBUG , GENERIC ,
and
.Pa OTHERMACHINE ,
and install the kernel specified by the config file
.Pa MINE .
It defaults to
.Pa GENERIC .
.It Va LOADER_TFTP_SUPPORT
.Pq Vt bool
While not a buildkernel-affected option, there is no better place for this.
By default the
.Xr pxeboot 8
loader retrieves the kernel via NFS.
Defining this and recompiling
.Pa /usr/src/sys/boot
will cause it to retrieve the kernel via TFTP.
This allows
.Xr pxeboot 8
to load a custom BOOTP diskless kernel yet
still mount the server's
.Pa /
rather than load the server's kernel.
.It Va MODULES_OVERRIDE
.Pq Vt str
Set to a list of modules to build instead of all of them.
.It Va NO_KERNELCONFIG
.Pq Vt bool
Set this to skip running
.Xr config 8
during
.Dq Li "${MAKE} buildkernel" .
.It Va NO_KERNELDEPEND
.Pq Vt bool
Set this to skip running
.Dq Li "${MAKE} depend"
during
.Dq Li "${MAKE} buildkernel" .
.It Va NO_MODULES
.Pq Vt bool
Set to not build modules with the kernel.
.It Va PORTS_MODULES
Set this to the list of ports you wish to rebuild every time the kernel
is built.
.It Va WITHOUT_MODULES
.Pq Vt 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
.Va MODULES_OVERRIDE .
This is applied
.Em after
.Va MODULES_OVERRIDE .
.El
.Ss "BUILDING THE WORLD"
.Pp
The following list provides a name and short description for variables
that are used during the world build:
.Bl -tag -width Ar
.It Va ENABLE_SUID_K5SU
.Pq Vt bool
Set this if you wish to use the ksu utility.
Otherwise, it will be
installed without the set-user-ID bit set.
.It Va ENABLE_SUID_NEWGRP
.Pq Vt bool
Set this to install
.Xr newgrp 1
with the set-user-ID bit set.
Otherwise,
.Xr newgrp 1
will not be able to change users' groups.
.It Va ENABLE_SUID_SSH
.Pq Vt bool
Set this to install
.Xr ssh 1
with the set-user-ID bit turned on.
.It Va ENABLE_WPA_SUPPLICANT_EAPOL
.Pq Vt str
Build
.Xr wpa_supplicant 8
with support for the IEEE 802.1X protocol and with
support for EAP-PEAP, EAP-TLS, EAP-LEAP, and EAP-TTLS
protocols (usable only via 802.1X).
This option is ignored if
.Va NO_CRYPT
or
.Va NO_OPENSSL
are set.
.It Va MAKE_IDEA
.Pq Vt bool
Set to build the IDEA encryption code.
This code is patented in the USA and many European countries.
It is
.Em "YOUR RESPONSIBILITY"
to determine if you can legally use IDEA.
.It Va MODULES_WITH_WORLD
.Pq Vt bool
Set to build modules with the system instead of the kernel.
.It Va NO_ACPI
.Pq Vt bool
Set to not build
.Xr acpiconf 8 ,
.Xr acpidump 8
and related programs.
.It Va NO_ATM
.Pq Vt bool
Set to not build
programs and libraries related to ATM networking.
.It Va NO_AUTHPF
.Pq Vt bool
Set to not build
.Xr authpf 8 .
.It Va NO_BIND
.Pq Vt 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.
.It Va NO_BIND_DNSSEC
.Pq Vt bool
Set to avoid building or installing the DNSSEC related binaries,
.Xr dnssec-keygen 8
and
.Xr dnssec-signzone 8 .
.It Va NO_BIND_ETC
.Pq Vt bool
Set to avoid installing the default files to
.Pa /var/named/etc/namedb .
.It Va NO_BIND_LIBS_LWRES
.Pq Vt bool
Set to avoid installing the lightweight resolver library in
.Pa /usr/lib .
The library that is private to the build system may still be built as needed.
.It Va NO_BIND_MTREE
.Pq Vt bool
Set to avoid running
.Xr mtree 8
to create the chroot directory structure under
.Pa /var/named ,
and avoid creating an
.Pa /etc/namedb
symlink to the chroot directory.
This option should typically be used together with
.Vt NO_BIND_ETC .
.It Va NO_BIND_NAMED
.Pq Vt bool
Set to avoid building or installing
.Xr named 8 ,
.Xr named.reload 8 ,
.Xr named-checkconf 8 ,
.Xr named-checkzone 8 ,
.Xr rndc 8 ,
and
.Xr rndc-confgen 8 .
.It Va NO_BIND_UTILS
.Pq Vt bool
Set to avoid building or installing the BIND userland utilities,
.Xr dig 1 ,
.Xr host 1 ,
.Xr nslookup 1 ,
and
.Xr nsupdate 8 .
.It Va NO_BLUETOOTH
.Pq Vt bool
Set to not build Bluetooth related kernel modules, programs and libraries.
.It Va NO_BOOT
.Pq Vt bool
Set to not build the boot blocks and loader.
.It Va NO_CLEAN
.Pq Vt bool
Set this to disable cleaning during
.Dq Li "make buildworld" .
This should not be set unless you know what you are doing.
.It Va NO_CLEANDIR
.Pq Vt bool
Set this to run
.Dq Li "${MAKE} clean"
instead of
.Dq Li "${MAKE} cleandir" .
.It Va NO_CRYPT
.Pq Vt bool
Set to not build any crypto code.
.It Va NO_CVS
.Pq Vt bool
Set to not build CVS.
.It Va NO_CXX
.Pq Vt bool
Set to not build
.Xr g++ 1
and related libraries.
.It Va NO_DICT
.Pq Vt bool
Set to not build the Webster dictionary files.
.It Va NO_DYNAMICROOT
.Pq Vt bool
Set this if you do not want to link
.Pa /bin
and
.Pa /sbin
dynamically.
.It Va NO_FORTRAN
.Pq Vt bool
Set to not build
.Xr g77 1
and related libraries.
.It Va NO_GAMES
.Pq Vt bool
Set to not build games.
.It Va NO_GDB
.Pq Vt bool
Set to not build
.Xr gdb 1 .
.It Va NO_GPIB
.Pq Vt bool
Set to not build GPIB bus support.
.It Va NO_I4B
.Pq Vt bool
Set to not build isdn4bsd package.
.It Va NO_INET6
.Pq Vt bool
Set to not build
programs and libraries related to IPv6 networking.
.It Va NO_INFO
.Pq Vt bool
Set to not make or install
.Xr info 5
files.
.It Va NO_IPFILTER
.Pq Vt bool
Set to not build IP Filter package.
.It Va NO_KERBEROS
.Pq Vt bool
Set this if you do not want to build Kerberos 5 (KTH Heimdal).
.It Va NO_LIBC_R
.Pq Vt bool
Set to not build
.Nm libc_r
(reentrant version of
.Nm libc ) .
.It Va NO_LIBPTHREAD
.Pq Vt bool
Set to not build the
.Nm libpthread
(M:N threading)
library.
.It Va NO_LIBTHR
.Pq Vt bool
Set to not build the
.Nm libthr
(1:1 threading)
library.
.It Va NO_LPR
.Pq Vt bool
Set to not build
.Xr lpr 1
and related programs.
.It Va NO_MAILWRAPPER
.Pq Vt bool
Set to not build the
.Xr mailwrapper 8
MTA selector.
.It Va NO_MAN
.Pq Vt bool
Set to not build manual pages.
.It Va NO_MANCOMPRESS
.Pq Vt bool
Set to install manual pages uncompressed.
.It Va NO_NETCAT
.Pq Vt bool
Set to not build
.Xr nc 1
utility.
.It Va NO_NIS
.Pq Vt bool
Set to not build
.Xr NIS 8
support and related programs.
If set, you might need to adopt your
.Xr nsswitch.conf 5
and remove
.Sq nis
entries.
.It Va NO_OBJC
.Pq Vt bool
Set to not build Objective C support.
.It Va NO_OPENSSH
.Pq Vt bool
Set to not build OpenSSH.
.It Va NO_OPENSSL
.Pq Vt bool
Set to not build OpenSSL (implies
.Va NO_KERBEROS
and
.Va NO_OPENSSH ) .
.It Va NO_PF
.Pq Vt bool
Set to not build PF firewall package.
.It Va NO_PROFILE
.Pq Vt bool
Set to avoid compiling profiled libraries.
.It Va NO_RCMDS
.Pq Vt bool
Disable building of the
.Tn BSD
r-commands.
This includes
.Xr rlogin 1 ,
.Xr rsh 1 ,
etc.
.It Va NO_SENDMAIL
.Pq Vt bool
Set to not build
.Xr sendmail 8
and related programs.
.It Va NO_SHARE
.Pq Vt bool
Set to not build in the
.Pa share
subdir.
.It Va NO_SHARED
.Pq Vt bool
Set to not build
.Pa /bin
and
.Pa /sbin
statically linked, this can be bad.
If set, every utility that uses
.Pa bsd.prog.mk
will be linked statically.
.It Va NO_SHAREDOCS
.Pq Vt bool
Set to not build the
.Bx 4.4
legacy docs.
.It Va NO_TCSH
.Pq Vt bool
Set to not build and install
.Pa /bin/csh
(which is
.Xr tcsh 1 ) .
.It Va NO_TOOLCHAIN
.Pq Vt bool
Set to not build
programs used for program development,
compilers, debuggers etc.
.It Va NO_USB
.Pq Vt bool
Set to not build
.Xr usbd 8
and related programs.
.It Va PPP_NO_NAT
.Pq Vt bool
Build
.Xr ppp 8
without support for network address translation (NAT).
.It Va PPP_NO_NETGRAPH
.Pq Vt bool
Set to build
.Xr ppp 8
without support for Netgraph.
.It Va PPP_NO_RADIUS
.Pq Vt bool
Set to build
.Xr ppp 8
without support for RADIUS.
.It Va PPP_NO_SUID
.Pq Vt bool
Set to disable the installation of
.Xr ppp 8
as a set-user-ID root program.
.It Va SENDMAIL_ADDITIONAL_MC
.Pq Vt str
Additional
.Pa .mc
files which should be built into
.Pa .cf
files at build time.
The value should include the full path to the
.Pa .mc
file(s), e.g.,
.Pa /etc/mail/foo.mc
.Pa /etc/mail/bar.mc .
.It Va SENDMAIL_CFLAGS
.Pq Vt str
Flags to pass to the compile command when building
.Xr sendmail 8 .
The
.Va SENDMAIL_*
flags can be used to provide SASL support with setting such as:
.Bd -literal -offset indent
SENDMAIL_CFLAGS=-I/usr/local/include -DSASL
SENDMAIL_LDFLAGS=-L/usr/local/lib
SENDMAIL_LDADD=-lsasl
.Ed
.It Va SENDMAIL_CF_DIR
.Pq Vt str
Override the default location for the
.Xr m4 1
configuration files used to build a
.Pa .cf
file from a
.Pa .mc
file.
.It Va SENDMAIL_DPADD
.Pq Vt str
Extra dependencies to add when building
.Xr sendmail 8 .
.It Va SENDMAIL_LDADD
.Pq Vt str
Flags to add to the end of the
.Xr ld 1
command when building
.Xr sendmail 8 .
.It Va SENDMAIL_LDFLAGS
.Pq Vt str
Flags to pass to the
.Xr ld 1
command when building
.Xr sendmail 8 .
.It Va SENDMAIL_M4_FLAGS
.Pq Vt str
Flags passed to
.Xr m4 1
when building a
.Pa .cf
file from a
.Pa .mc
file.
.It Va SENDMAIL_MAP_PERMS
.Pq Vt str
Mode to use when generating alias and map database files using
.Pa /etc/mail/Makefile .
The default value is 0640.
.It Va SENDMAIL_MC
.Pq Vt str
The default
.Xr m4 1
configuration file to use at install time.
The value should include the full path to the
.Pa .mc
file, e.g.,
.Pa /etc/mail/myconfig.mc .
Use with caution as a make install will overwrite any existing
.Pa /etc/mail/sendmail.cf .
Note that
.Va SENDMAIL_CF
is now deprecated.
.It Va SENDMAIL_SET_USER_ID
.Pq Vt bool
If set, install
.Xr sendmail 8
as a set-user-ID root binary instead of a set-group-ID binary
and do not install
.Pa /etc/mail/submit.{cf,mc} .
Use of this flag is not recommended and the alternative advice in
.Pa /etc/mail/README
should be followed instead if at all possible.
.It Va SENDMAIL_SUBMIT_MC
.Pq Vt str
The default
.Xr m4 1
configuration file for mail submission
to use at install time.
The value should include the full path to the
.Pa .mc
file, e.g.,
.Pa /etc/mail/mysubmit.mc .
Use with caution as a make install will overwrite any existing
.Pa /etc/mail/submit.cf .
.It Va TOP_TABLE_SIZE
.Pq Vt int
.Xr 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
.Pa /etc/passwd .
The default number is 20011.
.It Va WANT_FORCE_OPTIMIZATION_DOWNGRADE
.Pq Vt int
Causes the system compiler to be built such that it forces high optimization
levels to a lower one.
.Xr gcc 1
.Fl O2
and above is known to trigger known optimizer bugs at various
times \(em this is worse on the Alpha platform.
The value assigned is the highest optimization value used.
.It Va WITH_BIND_LIBS
.Pq Vt bool
Set to install BIND libraries and include files.
.El
.Ss "BUILDING DOCUMENTATION"
.Pp
The following list provides a name and short description for variables
that are used when building documentation.
.Bl -tag -width ".Va PRINTERDEVICE"
.It Va DISTDIR
.Pq Vt str
Where distfiles are kept.
Normally, this is
.Pa distfiles
in
.Va PORTSDIR .
.It Va DOC_LANG
.Pq Vt str
The list of languages and encodings to build and install.
.It Va PRINTERDEVICE
.Pq Vt str
The default format for system documentation, depends on your
printer.
This can be set to
.Dq Li ascii
for simple printers, or
.Dq Li ps
for postscript or graphics printers with a ghostscript
filter, or both.
.El
.Sh FILES
.Bl -tag -width ".Pa /usr/share/examples/etc/make.conf" -compact
.It Pa /etc/make.conf
.It Pa /usr/doc/Makefile
.It Pa /usr/share/examples/etc/make.conf
.It Pa /usr/share/mk/sys.mk
.It Pa /usr/src/Makefile
.It Pa /usr/src/Makefile.inc1
.El
.Sh SEE ALSO
.Xr gcc 1 ,
.Xr install 1 ,
.Xr make 1 ,
.Xr environ 7 ,
.Xr ports 7 ,
.Xr lpd 8 ,
.Xr sendmail 8 ,
.Xr wpa_supplicant 8
.Sh HISTORY
The
.Nm
file appeared sometime before
.Fx 4.0 .
.Sh AUTHORS
This
manual page was written by
.An Mike W. Meyer Aq mwm@mired.org .
.Sh BUGS
This manual page may occasionally be out of date with respect to
the options currently available for use in
.Nm .
Please check the
.Pa /usr/share/examples/etc/make.conf
file for the latest options which are available.
.Sh CAVEATS
Note, that
.Ev MAKEOBJDIRPREFIX
and
.Ev MAKEOBJDIR
are environment variables and should not be set in
.Nm
but in make's environment.