.\"	$NetBSD: packages.7,v 1.53 2001/06/27 12:57:47 zuntum Exp $
.\"
.\" from: NetBSD: bsd.pkg.mk,v 1.89 1998/06/01 21:30:10 hubertf Exp
.\"
.\"	This file is in the public domain.
.\"
.Dd May 3, 2001
.Dt PACKAGES 7
.Os
.Sh NAME
.Nm packages
.Nd
.Nx
user package variables
.Sh DESCRIPTION
This manual page describes the variables that users of the
.Nx
packages system can set to alter the configuration of the package system,
and individual packages.
.Sh COMMON VARIABLES
This section documents variables that typically apply to all packages.
Many of these may be set in
.Xr mk.conf 5 .
.Bl -tag -indent -width XXXXXXXXX
.It ARCH
The architecture, as returned by
.Dq uname -m .
See
.Xr uname 1 .
.It OPSYS
The operating system name, as returned by
.Dq uname -s .
.It LOCALBASE
Where non-X11 based packages will be installed.
The default is
.Pa /usr/pkg .
.It CROSSBASE
Where
.Dq cross
category packages will be installed.
The default is
.Pa ${LOCALBASE}/cross .
.It X11BASE
Where X11 is installed on the system, and where
.Dq X11
category packages will be installed.
The default is
.Pa /usr/X11R6 .
.It DISTDIR
Where to get gzip'd, tarballed copies of original sources.  The default is
.Pa ${PKGSRCDIR}/distfiles .
.It MASTER_SITE_BACKUP
Backup location(s) for distribution files and patch files if not found
locally and ${MASTER_SITES}/${PATCH_SITES}.  The Defaults are
.Pa ftp://ftp.netbsd.org/pub/NetBSD/packages/distfiles/${DIST_SUBDIR}/
and
.Pa ftp://ftp.freebsd.org/pub/FreeBSD/distfiles/${DIST_SUBDIR}/ .
.It MASTER_SITE_OVERRIDE
If set, override the MASTER_SITES setting with this value.
.It PACKAGES
A top level directory where all packages go (rather than going locally
to each package).  The default is
.Pa ${PKGSRCDIR}/packages .
.It GMAKE
Set to path of GNU make if not in $PATH (default: gmake).
.It PKG_FC
Set to the path of the desired fortran compiler (default: f2c-f77).
.It XMKMF
Set to path of
.Dq xmkmf
if not in $PATH (default: xmkmf -a).
.It WRKOBJDIR
A top level directory where, if defined, the separate working
directories will get created, and symbolically linked to from
.Pa ${WRKDIR}
(see below).  This is useful for building packages on several
architectures, then
.Pa ${PKGSRCDIR}
can be NFS-mounted while
.Pa ${WRKOBJDIR}
is local to every arch.
.It PKG_DEVELOPER
Run some sanity checks that package developers want:
.Bl -bullet
.It
make sure patches apply with zero fuzz
.It
run check-shlibs to see that all binaries will find their
shared libs.
.El
.It USE_GLX
Says that if Mesa is requested, a package should preferably use a
GLX (hardware-accelerated) version of the Mesa library.
.It BINPKG_SITES
List of sites carrying binary pkgs. Variables
.Dq rel
and
.Dq arch
are
replaced with OS release (
.Dq 1.5 ,
etc.) and architecture (
.Dq mipsel ,
etc.).
.El
.Sh PACKAGE SPECIFIC VARIABLES
This section documents variables that typically apply to an individual
package.  Non-Boolean variables without defaults are *mandatory*.
.Bl -tag -indent XXXXXXXX -width XXXXXXXX
.It ONLY_FOR_PLATFORM
If set, it lists the values of OS triples (OS-version-platform)
that the package will build under.  It can be a glob-style wildcard.
.It NOT_FOR_PLATFORM
If set, it lists the values of OS triples (OS-version-platform)
that the package will not build under.  It can be a glob-style wildcard.
.It MAINTAINER
The e-mail address of the contact person for this package.  The person
who feels responsible for this package, and who is most likely to look
at problems or questions regarding this package which have been
reported with
.Xr send-pr 1 .
The right person to contact before making major changes to the
package.  The default is packages@NetBSD.ORG.
.It CATEGORIES
A list of descriptive categories into which this package falls.
.It COMMENT
A one-line description of the package (should not include
the package name).
.It MASTER_SITES
Primary location(s) for distribution files if not found locally.
.It PATCH_SITES
Primary location(s) for distribution patch files (see
.Dv It PATCHFILES
below) if not found locally.
.It WRKDIR
A temporary working directory that gets *clobbered* on clean.  The default is
.Pa ${.CURDIR}/work
or
.Pa ${.CURDIR}/work.${MACHINE_ARCH}
if
.Dv OBJMACHINE
is set.
.It WRKSRC
A subdirectory of ${WRKDIR} where the distribution actually
unpacks to.  The default is
.Pa ${WRKDIR}/${DISTNAME}
unless
.Dv NO_WRKSUBDIR
is set, in which case it is simply
.Pa ${WRKDIR} .
.It DISTNAME
Name of package or distribution.
.It DISTFILES
Name(s) of archive file(s) containing distribution.  The default is
.Pa ${DISTNAME}${EXTRACT_SUFX} .
.It PATCHFILES
Name(s) of additional files that contain distribution patches
There is no default.  Make will look for them at
.Dv PATCH_SITES
(see above).  They will automatically be uncompressed before patching if
the names end with
.Dq .gz
or
.Dq .Z .
.It DIST_SUBDIR
Suffix to
.Pa ${DISTDIR} .
If set, all
.Pa ${DISTFILES}
and
.Pa ${PATCHFILES}
will be put in this subdirectory of
.Pa ${DISTDIR}.
.It ALLFILES
All of
.Pa ${DISTFILES}
and
.Pa ${PATCHFILES} .
.It IGNOREFILES
If some of the
.Pa ${ALLFILES}
are not checksum-able, set this variable to their names.
.It PKGNAME
Name of the package file to create if the
.Pa ${DISTNAME}
isn't really relevant for the package.  The default is
.Pa ${DISTNAME} .
.It SVR4_PKGNAME
Name of the package file to create if the
.Pa ${PKGNAME}
isn't unique enough on a SVR4 system. The default is
.Pa ${PKGNAME}
which may be shortened when you use gensolpkg. Only add SVR4_PKGNAME if
.Pa ${PKGNAME}
does not produce an unique package name on a SVR4 system.
The lenght of SVR4_PKGNAME is limited to 5 characters.
.It EXTRACT_ONLY
If defined, a subset of
.Pa ${DISTFILES}
you want to actually extract.
.It PATCHDIR
A directory containing any additional patches you made
to package this software.  The default is
.Pa ${.CURDIR}/patches .
.It SCRIPTDIR
A directory containing any auxiliary scripts.  The default is
.Pa ${.CURDIR}/scripts .
.It FILESDIR
A directory containing any miscellaneous additional files.  The default is
.Pa ${.CURDIR}/files .
.It PKGDIR
A direction containing any package creation files.  The default is
.Pa ${.CURDIR}/pkg .
.It PKG_DBDIR
Where package installation is recorded.  The default is
.Pa /var/db/pkg .
.It FORCE_PKG_REGISTER
If set, it will overwrite any existing package registration information in
.Pa ${PKG_DBDIR}/${PKGNAME} .
.It NO_MTREE
If set, will not invoke mtree from
.Pa bsd.pkg.mk
from the
.Dq install
target.
.It MTREE_FILE
The name of the mtree file.  The default is
.Pa /etc/mtree/BSD.x11.dist
if
.Dv USE_IMAKE
or
.Dv USE_X11BASE
is set, or
.Pa /etc/mtree/BSD.pkg.dist
otherwise.
.It USE_X11
Instructs the package system that the package will use headers and libraries
from
.Dv X11BASE
and so a check must be made that these are available.
If they are not, an IGNORE message will be displayed, and the package
will not be built.
.It PLIST_SRC
Which file(s) to use to build
.Pa ${PLIST} .
Default is
.Pa ${PKGDIR}/PLIST .
.It PLIST_SUBST
Patterns that get automatically expanded during the PLIST creation.
Takes arguments of the form
.Li VARNAME =
.Dq value
and subsequently replaces every occurance of
.Li ${VARNAME}
with
.Li value .
.It INSTALL_FILE
The name of a script which will be invoked when installing
binary packages. If there is a file called
.Pa ${PKGDIR}/INSTALL ,
that file will be used.
.It DEINSTALL_FILE
The name of a script which will be invoked when de-installing
binary packages. If there is a file called
.Pa ${PKGDIR}/DEINSTALL ,
that file will be used.
.It MESSAGE
The name of a file which will be displayed during the installation
of a package. No substitution according to MESSAGE_SUBST takes
place. Overrides MESSAGE_SRC. Should not be used.
.It MESSAGE_SRC
The name of a file which will be displayed when installing
a package. If neither MESSAGE_SRC nor MESSAGE are set, and there
is a file called
.Pa ${PKGDIR}/MESSAGE ,
that file will be used.
Before displaying the file, substitution according to MESSAGE_SUBST
takes place.
.It MESSAGE_SUBST
This variable takes equations of the form
.Li VARNAME =
.Dq value ,
and replaces all occurrences of
.Li ${VARNAME}
in MESSAGE_SRC with
.Li value .
By default, substitution is performed for
.Li LOCALBASE ,
.Li PKGNAME ,
.Li PREFIX ,
.Li X11BASE ,
and
.Li X11PREFIX .
.It NO_BIN_ON_CDROM
Binaries of this package may not be placed on CDROM.  Set this string to
.Pa ${RESTRICTED} .
.It NO_BIN_ON_FTP
Binaries of this package may not be made available via ftp.  Set this string to
.Pa ${RESTRICTED} .
.It NO_BUILD
Use a dummy (do-nothing) build target.
.It NO_CONFIGURE
Use a dummy (do-nothing) configure target.
.It NO_INSTALL
Use a dummy (do-nothing) install target.
.It NO_PACKAGE
Use a dummy (do-nothing) package target.
.It NO_PKG_REGISTER
Don't register a package install as a package.
.It NO_SRC_ON_CDROM
Distfile(s) of this package may not be placed on CDROM.  Set this string to
.Pa ${RESTRICTED} .
.It NO_SRC_ON_FTP
Distfile(s) of this package may not be made available via ftp.  Set this string to
.Pa ${RESTRICTED} .
If this variable is set, the distfile will not be mirrored by ftp.netbsd.org.
.It NO_WRKSUBDIR
Assume package unpacks directly into
.Pa ${WRKDIR} .
.It NO_DEPENDS
Don't verify build of dependencies.
.It CHECK_SHLIBS
Do not run 'check-shlibs' even if PKG_DEVELOPER is set. This prevents
errors on emul/compat packages (e.g. Linux binaries, ...).
.It MAKEFILE
Name of the Makefile in ${WRKSRC}, used in the default build and
install targets. Default:
.Dq Makefile .
.It BROKEN
Package is broken.  Set this string to the reason why.
.It RESTRICTED
Package is restricted.  Set this string to the reason why.
.It LICENCE
The package has a non-standard licence, such as shareware, or non-commercial-use
only. This string should be set to the type of licence the package has,
like "shareware", or "non-commercial-use". If LICENCE is set, the
.Dv ACCEPTABLE_LICENCES
variable will be searched, if set, for a string matching the licence.
.It PASSIVE_FETCH
Uses passive
.Xr ftp 1
to retrieve distribution files.
.It REPLACE_PERL
Takes a list of files and replaces each occurence of "/usr/bin/perl", "/usr/local/bin/perl"
and "/usr/pkg/bin/perl" in the named files with the value of ${PERL5}.
This can be used to point perl scripts to the proper interpreter that pkgsrc installs.
Note: it looks for the listed files in ${WRKSRC}.
.It USE_LIBTOOL
Says that the package uses
.Pa libtool
to manage building of libraries and shared objects, where applicable.
.It LTCONFIG_OVERRIDE
If set, override the specified
.Pa ltconfig
for using the
.Pa libtool
package instead of the pkg's own
.Pa libtool .
.It USE_FORTRAN
Says that the package uses a fortran compiler for building.
.It USE_GMAKE
Says that the package uses
.Pa gmake .
.It USE_JAVA
Says that the package uses a Java virtual machine.
.It USE_PERL5
Says that the package uses
.Pa perl5
for building and running.
.It PERL5_REQD
Sets the minimum
.Pa perl5
version required. The default is 5.0.
.It USE_IMAKE
Says that the package uses
.Pa imake .
.It USE_MESA
Says that the package uses the Mesa library.  This will include all
Mesa components that are not included in the installed X11
distribution.
.It USE_SSL
Says that the package uses a SSL library. The location of the SSL
installation can be found in
.Dv ${SSLBASE} .
.It USE_X11BASE
Says that the package installs itself into the X11 base directory
.Dv ${X11BASE} .
This is necessary for packages that install X11 fonts, application
default files or Imake rule or template files.
.It USE_XAW
Says that the package uses the Athena widget set.
.It USE_XPM
Says that the package uses the Xpm library. If it is not included
in the installed X11 distribution the xpm package will be used.
.It USE_GTEXINFO
Says that the package uses gtexinfo.
.It USE_MOTIF
Says that the package uses Motif (it will use lesstif if
Motif is unavailable)
.It NO_INSTALL_MANPAGES
For imake packages that don't like the install.man target.
.It HAS_CONFIGURE
Says that the package has its own configure script.
.It GNU_CONFIGURE
Set if you are using GNU configure (optional).
.It CONFIGURE_SCRIPT
Name of configure script, defaults to
.Pa configure .
.It CONFIGURE_ARGS
Pass these args to configure if ${HAS_CONFIGURE} is set.
.It CONFIGURE_ENV
Pass these env (shell-like) to configure if
.Pa ${HAS_CONFIGURE}
is set.
.It SCRIPTS_ENV
Additional environment variables passed to scripts in
.Pa ${SCRIPTDIR}
executed by
.Pa bsd.pkg.mk .
.It MAKE_ENV
Additional environment variables passed to sub-make in build stage.
.It CFLAGS
Any CFLAGS you wish passed to the configure script and/or sub-make in
build stage.
.It LDFLAGS
Any LDFLAGS you wish passed to the configure script and/or sub-make in
build stage.  LDFLAGS is pre-loaded with rpath settings for ELF machines
depending on the setting of USE_X11 or USE_MOTIF.  If you do not wish
to override these settings, use LDFLAGS+=.
.It MAKE_ENV
Additional environment variables passed to sub-make in build stage.
.It IS_INTERACTIVE
Set this if your package needs to interact with the user
during a build.  User can then decide to skip this package by
setting
.Dv ${BATCH} ,
or compiling only the interactive package by setting
.Dv ${INTERACTIVE} .
.It FETCH_DEPENDS
A list of
.Dq path:dir
pairs of other package this package depends in the
.Dq fetch
stage.
.Dq path
is the name of a file if it starts with a slash
(/), an executable otherwise.  make will test for the existence (if it
is a full pathname) or search for it in your
.Dv $PATH
(if it is an executable) and go into
.Dq dir
to do a
.Dq make all install
if it's not found.
.It BUILD_DEPENDS
A list of
.Dq path:dir
pairs of other package this package depends to build
(between the
.Dq extract
and
.Dq build
stages, inclusive).  The test done to
determine the existence of the dependency is the same as
.Dv FETCH_DEPENDS .
.It RUN_DEPENDS
This definition is deprecated, and is no longer used in the packages
collection. It should be replaced by a simple
.Dq DEPENDS
definition.
.It LIB_DEPENDS
This definition is deprecated, and is no longer used in the packages
collection. It should be replaced by a simple
.Dq DEPENDS
definition.
.It DEPENDS
A list of prerequisite packages. The format of this entry is
.Dq pkgname:dir .
If the
.Dq pkgname
package is not installed, then it will be built and
installed from the source package in
.Dq dir .
.It CONFLICTS
A list of other ports this package conflicts with. Use this for packages
that install identical set of files. The format of this entry is
.Dq pkgname .
.It EXTRACT_CMD
Command for extracting archive.  The default is
.Xr tar 1 .
.It EXTRACT_SUFX
Suffix for archive names.  The default is
.Dq .tar.gz .
.It EXTRACT_BEFORE_ARGS
Arguments to
.Dv ${EXTRACT_CMD}
before the filename argument.  The default is
.Dq -xzf .
.It EXTRACT_AFTER_ARGS
Arguments to
.Dv ${EXTRACT_CMD}
following the filename argument.  There is no default.
.It FETCH_CMD
Full path to ftp/http command if not in
.Dv $PATH .
The default is
.Pa /usr/bin/ftp .
.It NO_IGNORE
Set this to
.Dq YES
(most probably in a
.Dq make fetch
in
.Pa ${PKGSRCDIR} )
if you want to fetch all distfiles, even for packages not built due to
limitation by absent X or Motif.
.\" XXXmrg -- this shouldn't be documented.  if we want to export the
.\" feature, give it a different name, or something.
.It __PLATFORM_OK
Internal variable set if the package is ok to build on this architecture. Set
to
.Dq YES
to insist on e.g. fetching all distfiles (for interactive use in
.Pa ${PKGSRCDIR} ,
mostly.
.It ALL_TARGET
The target to pass to make in the package when building.  The default is
.Dq all .
.It INSTALL_TARGET
The target to pass to make in the package when installing.  The default is
.Dq install .
.It MASTER_SORT
List of suffixes for preferred download locations to sort the MASTER_SITES
accordingly.
.It MASTER_SORT_REGEX
Similar to MASTER_SORT, but takes a list of regular expressions for
finer grained control.
.It OSVERSION_SPECIFIC
Used to denote packages, such as LKM's, which are tightly bound to a specific
version of the OS.  Such binary packages are not backwards compatible with
other versions of the OS, and should be uploaded to a version specific
directory on the FTP.  This variable is not currently used by any of the
package system internals, but may be used in the future.  Set this to
.Dq YES
to denote such a package.
.El
.Sh MOTIF SUPPORT
This section documents variables related to the use and installation of
Motif and/or LessTiF.
.Bl -tag -indent XXXXXXXX -width XXXXXXXX
.It USE_MOTIF
Set this in your package if it requires Motif.
If Motif is not present on your system, the lesstif package will be
installed for you.
.It MOTIFLIB
Set automatically to the Motif or Lesstif library name.
.El
.Sh PACKAGE DISTFILE REPOSITORIES
.Pp
The following variables allow to override the default package
repositories, they define a space separated list of mirror sites to be
used instead of the defaults to retrieve packages from (usually if
there's a closer or cheaper site).
.Pp
.Sq %SUBDIR%
and
.Sq ${DIST_SUBDIR}
are replaced by a package specific strings.
.Pp
.Bl -tag -width OBJMACHINE
.It Sy MASTER_SITE_BACKUP
Backup sites for packages that are maintained in
.Sq ftp.netbsd.org:/pub/NetBSD/packages/distfiles/${DIST_SUBDIR} .
.It Sy MASTER_SITE_GNU
GNU source mirror.
.It Sy MASTER_SITE_LOCAL
Local package source distributions that are maintained in
.Sq ftp.netbsd.org:/pub/NetBSD/packages/distfiles/LOCAL_PORTS/ .
.It Sy MASTER_SITE_PERL_CPAN
Perl CPAN mirror.
.It Sy MASTER_SITE_SOURCEFORGE
download.sourceforge.net mirror.
.It Sy MASTER_SITE_SUNSITE
sunsite.unc.edu mirror.
.It Sy MASTER_SITE_TEX_CTAN
TeX CTAN mirror.
.It Sy MASTER_SITE_XCONTRIB
X Window System contributed source mirror.
.El
.Sh SPECIAL VARIABLES
Variables to change if you want a special behavior:
.Bl -tag -indent XXXXXXXX -width XXXXXXXX
.It ECHO_MSG
Used to print all the
.Dq ===>
style prompts - override this
to turn them off.  The default is
.Pa /bin/echo .
.It CLEAR_DIRLIST
If set, cause the
.Dq clean-update
target to completely clean up and lose the list of dependent packages.  Use
with care!
.It DEPENDS_TARGET
The target to execute when a package is calling a dependency.  The default
depends on the target that is used:
.Dq package
for
.Dq make package ,
.Dq update
for
.Dq make update ,
and
.Dq reinstall
for all other targets.
.It NOCLEAN
If set, prevent the
.Dq update
target from cleaning up after itself.
.It PKG_VERBOSE
If set, print out more information about the automatic manual
page handling, and package deletion (see the
.Dq install,
.Dq deinstall
and
.Dq update
targets),
and also sets PATCH_DEBUG as well.
.It REINSTALL
During update, deinstall each package before calling
.Sq ${DEPENDS_TARGET}
(see the
.Dq update
target for more information).
.It UPDATE_TARGET
The target to execute for building a package during
.Dq make update .
Defaults to
.Dq install .
Other good targets are
.Dq package
or
.Dq bin-install .
Do not set this to
.Dq update
or you will get stuck in an endless loop!
.El
.Sh INSTALL VARIABLES
This section documents variables that serve as convenient aliases.
for your *-install targets.
.Bl -tag -indent XXXXXXXX -width XXXXXXXX
.It INSTALL_PROGRAM
A command to install binary executables.
Use these like:
.Dq ${INSTALL_PROGRAM} ${WRKSRC}/prog ${PREFIX}/bin .
.It INSTALL_SCRIPT
A command to install executable scripts.
.It INSTALL_DATA
A command to install sharable data.
.It INSTALL_MAN
A command to install manpages (doesn't compress).
.It INSTALL_PROGRAM_DIR
Create a directory for storing programs.
.It INSTALL_SCRIPT_DIR
Create a directory for storing scripts.
.It INSTALL_DATA_DIR
Create a directory for storing arbitrary data.
.It INSTALL_MAN_DIR
Create a directory for storing man pages.
.El
.Sh MANUAL PAGE VARIABLES
This section docuemnts variables used to configure the way manual pages
are installed by this package.
.Bl -tag -indent XXXXXXXX -width XXXXXXXX
.It MANCOMPRESSED
Indicates that the package installs manpages in a compressed
form.  The default package installs manpages uncompressed.
.It INFO_FILES
set to the base names of the info files you wish to be installed in the
info dir file. Automatically sets
.Dv USE_GTEXINFO .
.El
.Sh PACKAGE TARGETS
This section documents the default targets and their behaviors.  If any
target relies on another target for completion (eg, the
.Dq install
target relies on the
.Dq build
target), then these targets will be executed beforehand.
.Bl -tag -indent XXXXXXXX -width XXXXXXXX
.It fetch
Retrieves
.Dv ${DISTFILES}
and
.Dv ${PATCHFILES}
into
.Pa ${DISTDIR}
as necessary.
.It fetch-list
Show list of files that would be retrieved by fetch.
.It extract
Unpacks
.Dv ${DISTFILES} into
.Pa ${WRKDIR}.
.It patch
Apply any provided patches to the source.
.It configure
Runs either GNU configure, one or more local configure scripts or
nothing, depending on what's available.
.It build
Actually compile the sources.
.It install
Install the results of a build.
.It bin-install
Install a binary package from local disk and via FTP from a list
of sites (see
.Dq BINPKG_LIST
variable), and do a
.Dq make package
if no binary package is available anywhere. The arguments given to
.Xr pkg_add 1
can be set via
.Dq BIN_INSTALL_FLAGS ,
e.g. to do verbose operation, etc.
.It reinstall
Install the results of a build, ignoring
.Dq already installed
flag.
.It deinstall
Remove the installation.
.It update
Update the installation of the current and all dependent packages that
are installed on the system.
.It package
Create a binary package other people can use.
.It clean
Clean the source tree for a package.
.It clean-depends
Clean the source tree for a package and the packages it depends upon.
.It clean-update
Clean the source tree for a package and all dependent packages that
are installed on the system.
.It describe
Try to generate a one-line description for each package for
use in INDEX files and the like.
.It checksum
Use
.Pa files/md5
to ensure that your distfiles are valid.
.It makesum
Generate
.Pa files/md5
(only do this for your own packages!).
.It readme
Create a README.html file describing the category or package. See
.Pa ${PKGSRCDIR}/Packages.txt
for more details.
.It mirror-distfiles
Mirror the distfile(s) if they are freely redistributable. If
.Dv NO_SRC_ON_FTP
is set in the package's Makefile (usually to
.Pa ${RESTRICTED} )
then that reason is printed, and the distfile is not mirrored.
.El
.Pp
Default sequence for
.Dq all
is:  fetch checksum extract patch configure build.
.Pp
.\" Please read the comments in the targets section below, you
.\" should be able to use the pre-* or post-* targets/scripts
.\" (which are available for every stage except checksum) or
.\" override the do-* targets to do pretty much anything you want.
NEVER override the
.Dq regular
targets unless you want to open a major can of worms.
.Sh SEE ALSO
.Xr make 1 ,
.Xr mk.conf 5 ,
.Pa ${PKGSRCDIR}/mk/mk.conf.examples
and
.Rs
.%T "Documentation on the NetBSD Package System"
.Re
.Pa ${PKGSRCDIR}/Packages.txt
.Sh HISTORY
This manual page is based upon the comments in the
.Pa bsd.pkg.mk
file, as distributed with NetBSD.  The sources to this are far
and varied across all free BSD projects.