Move pkgtools/pkg_comp to pkgtools/pkg_comp1.

This is to make room for pkg_comp 2.0, which is coming soon.  The new release
is significantly different from the 1.x series in features (supports multiple
platforms, bootstrap, and pbulk) but also comes with a different configuration
syntax.

5 files changed, 1645 insertions, 0 deletions

diff --git a/pkgtools/pkg_comp1/DESCR b/pkgtools/pkg_comp1/DESCR
new file mode 100644
index 00000000000..4f84886d3e9
--- /dev/null
+++ b/pkgtools/pkg_comp1/DESCR
@@ -0,0 +1,14 @@
+pkg_comp is a small utility designed to build packages inside a
+clean chroot tree.
+
+Some ideas about what to use it for (taken from manpage):
+* Build packages for other system versions. For example, build
+  packages for NetBSD 1.5 while you are running NetBSD current.
+* Build packages using different options than your current system
+  like changing the threading library, COPTS, placement of
+  configuration files, etc.
+* Debug the build process of a package, checking if buildlinks
+  work properly.
+* Avoid autoconf's side effects by keeping a separate chroot for
+  each project, like one for GNOME2 and another one for KDE3.
+* Schedule builds of package sets for several different machines.
diff --git a/pkgtools/pkg_comp1/Makefile b/pkgtools/pkg_comp1/Makefile
new file mode 100644
index 00000000000..6a32d1162f1
--- /dev/null
+++ b/pkgtools/pkg_comp1/Makefile
@@ -0,0 +1,25 @@
+# $NetBSD: Makefile,v 1.1 2017/02/12 10:48:55 jmmv Exp $
+
+PKGNAME=	pkg_comp1-1.38
+PKGREVISION=	1
+CATEGORIES=	pkgtools
+
+MAINTAINER=	pkgsrc-users@NetBSD.org
+COMMENT=	Build packages inside a chroot jail
+LICENSE=	modified-bsd
+
+CONFLICTS=	pkg_comp-[0-9]*
+
+ONLY_FOR_PLATFORM=	NetBSD-*-*
+
+WRKSRC=		${WRKDIR}
+NO_CONFIGURE=	YES
+NO_BUILD=	YES
+
+INSTALLATION_DIRS=	${PKGMANDIR}/man8 sbin
+
+do-install:
+	${INSTALL_SCRIPT} ${FILESDIR}/pkg_comp.sh ${DESTDIR}${PREFIX}/sbin/pkg_comp
+	${INSTALL_MAN} ${FILESDIR}/pkg_comp.8 ${DESTDIR}${PREFIX}/${PKGMANDIR}/man8/pkg_comp.8
+
+.include "../../mk/bsd.pkg.mk"
diff --git a/pkgtools/pkg_comp1/PLIST b/pkgtools/pkg_comp1/PLIST
new file mode 100644
index 00000000000..7772b20a6d9
--- /dev/null
+++ b/pkgtools/pkg_comp1/PLIST
@@ -0,0 +1,3 @@
+@comment $NetBSD: PLIST,v 1.1 2017/02/12 10:48:55 jmmv Exp $
+sbin/pkg_comp
+man/man8/pkg_comp.8
diff --git a/pkgtools/pkg_comp1/files/pkg_comp.8 b/pkgtools/pkg_comp1/files/pkg_comp.8
new file mode 100644
index 00000000000..957b26ceafe
--- /dev/null
+++ b/pkgtools/pkg_comp1/files/pkg_comp.8
@@ -0,0 +1,543 @@
+.\" $NetBSD: pkg_comp.8,v 1.1 2017/02/12 10:48:55 jmmv Exp $
+.\"
+.\" pkg_comp - Build packages inside a clean chroot environment
+.\" Copyright (c) 2002, 2003, 2004, 2005 Julio M. Merino Vidal <jmmv@NetBSD.org>
+.\"
+.\" 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. Neither the name of The NetBSD Foundation nor the names of its
+.\"    contributors may be used to endorse or promote products derived
+.\"    from this software without specific prior written permission.
+.\" 3. Neither the name of author nor the names of its contributors may
+.\"    be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
+.\" ``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 FOUNDATION OR CONTRIBUTORS
+.\" 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.
+.\"
+.Dd August 17, 2015
+.Dt PKG_COMP 8
+.Os
+.Sh NAME
+.Nm pkg_comp
+.Nd build packages inside a sandbox
+.Sh SYNOPSIS
+.Nm
+.Oo Fl Po
+.Cm c Ns \&| Ns Cm C
+.Pc
+.Ar conf_file
+.Oc
+.Op Fl Nn
+.Ar target
+.Op Ar pkg_name ...
+.Sh DESCRIPTION
+.Nm ,
+or
+.Em Package Compiler
+in its full name,
+is a tool that makes easy the compilation of packages inside a clean
+sandbox.
+This allows an easy tracking of exact dependencies
+and the correct behavior of a package in a fresh system installation.
+.Pp
+The behavior of
+.Nm
+is controlled through a small configuration file and a target (keep
+reading to learn more).
+The configuration file tells
+.Nm
+how to configure the new chroot environment, and the target specifies
+which action to take.
+.Pp
+The following options are recognized:
+.Bl -tag -width XcXconf_file
+.It Fl C Ar conf_file
+Use
+.Ar conf_file
+as configuration file (full path expected).
+.It Fl c Ar conf_file
+Use
+.Ar conf_file
+as configuration file (only base name expected).
+.It Fl N
+With the exception of
+.Pa pkgtools/libkver
+(see
+.Va NETBSD_RELEASE )
+avoid installation of default packages as well as
+.Va INSTALL_PACKAGES
+and
+.Va BUILD_PACKAGES
+during the creation of the chroot.
+.It Fl n
+Avoid installation of
+.Va INSTALL_PACKAGES
+and
+.Va BUILD_PACKAGES
+during the creation of the chroot.
+.El
+.Ss What to use it for?
+You can use
+.Nm
+to achieve many goals when building packages.
+Here are some ideas:
+.Bl -bullet
+.It
+Build packages for other system versions.
+For example, build packages for
+.Nx 4.0
+while you are running
+.Nx 5.0 .
+.It
+Build packages using different
+.Pa mk.conf
+options than your current system, like changing the threading library,
+.Sy COPTS ,
+placement of configuration files, etc.
+.It
+Debug the build process of a package, checking if buildlinks work
+properly.
+.It
+Avoid autoconf's side effects by keeping a separate chroot for each
+project, like one for GNOME2 and another one for KDE3.
+.It
+Schedule builds of package sets for several different machines.
+.El
+.Sh CONTROL DIRECTORY
+.Nm
+needs to store several pieces of information when it is running.
+Instead of using normal system trees, it uses a special directory inside the
+chroot to avoid polluting the system.
+It stores there scripts, object files, built packages, etc.
+This directory is
+.Pa $DESTDIR/pkg_comp ;
+the symbolic link
+.Pa $DESTDIR/p
+is automatically created to ease pathnames when working inside the chroot.
+.Sh CONFIGURATION
+With
+.Nm
+you can maintain several configuration files so you can work with
+different chroot jails easily.
+To make this easy, configuration files are stored inside
+.Pa $HOME/pkg_comp ,
+followed by the configuration file name and the .conf suffix.
+The default configuration file is
+.Pa $HOME/pkg_comp/default.conf ,
+and is always used if you do not specify another one.
+The configuration file name is specified by the argument of the
+.Fl c
+option.
+Alternatively you can specify any pathname as a configuration file
+with the argument of the
+.Fl C
+option.
+.Pp
+Configuration files are simple shell scripts that define
+variables.
+The default values shown here are those written in the template when
+issuing a maketemplate.
+.Bl -tag -width indent
+.It AUTO_PACKAGES
+A list of packages to automatically build during the
+.Sy auto
+target.
+A package is in the form
+.Sq section/name ,
+like
+.Sq misc/colorls ,
+or a plain name like
+.Sq colorls .
+Defaults to nothing.
+.It AUTO_TARGET
+The pkgsrc target to use when building packages in an automated fashion
+(using the
+.Ql auto
+target).
+Should be set to
+.Ql package
+or
+.Ql bin-install ,
+as other values are useless.
+Defaults to
+.Ql package .
+.It BUILD_PACKAGES
+A list of packages to automatically build after the
+.Sy makeroot
+target.
+A package is in the form
+.Sq section/name ,
+like
+.Sq misc/colorls ,
+or a plain name like
+.Sq colorls .
+Defaults to nothing.
+.It BUILD_PKG_COMP_TARGET
+The pkgsrc target to use when building packages.
+It can contain any target supported by the pkgsrc system, but
+reasonable values are:
+.Ql install ,
+.Ql package
+and
+.Ql bin-install .
+Defaults to
+.Ql package .
+.It COPYROOTCFG
+If set to
+.Ql yes ,
+all configuration files (not directories) that reside inside
+.Pa /root
+are copied to
+.Sy $DESTDIR/root .
+Defaults to
+.Ql no .
+.It DESTDIR
+The chroot jail directory.
+Defaults to
+.Pa /var/chroot/pkg_comp/default .
+.It DISTRIBDIR
+This is the directory which holds
+.Nb
+binary sets and X sets.
+Its structure is the same as official release
+distributions, that is, tgz files must reside inside
+.Pa $DISTRIBDIR/binary/sets .
+Defaults to
+.Pa /var/pub/NetBSD .
+.It EXTRAMK
+Specifies a whitespace-separated list of files that must be appended to
+.Pa $DESTDIR/etc/mk.conf .
+This is useful to add special items to this configuration file.
+Defaults to nothing.
+.It INSTALL_PACKAGES
+A list of packages to automatically install after the
+.Sy makeroot
+and before installing
+.Sy BUILD_PACKAGES .
+These are also installed within the sandbox created by the
+.Sy auto
+target, but before anything is built.
+Each name must be the full package name, including the tgz suffix.
+Packages are searched inside
+.Pa $REAL_PACKAGES/All .
+Defaults to nothing.
+.It GENERATE_PKG_SUMMARY
+If set to
+.Sq yes ,
+generate a new
+.Pa $REAL_PACKAGES/pkg_summary.gz
+file at the end of every package build by both the
+.Sq auto
+and
+.Sq build
+targets.
+.It LOCALBASE
+Where binary packages get installed.
+Defaults to
+.Pa /usr/pkg .
+.It MKCONF_VARS
+A list of variable names that will be appended to the generated
+.Pa /etc/mk.conf
+file, together with their values set in the configuration file.
+Its default value contains all variables listed here.
+.It NETBSD_RELEASE
+Specifies which version number of
+.Nx
+is installed inside the chroot.
+If set to
+.Ql no ,
+no special action is taken (this is useful if the system version inside
+the chroot matches the outside one).
+Otherwise, the package
+.Pa pkgtools/libkver
+will be installed inside the chroot, in a special purpose
+prefix whose value can be set in
+.Pa $DESTDIR/etc/mk.conf
+via the configuration file
+with the
+.Va LIBKVER_STANDALONE_PREFIX
+variable.
+The libkver library will be configured inside the chroot, with the symbolic link
+.Pa $DESTDIR/libkver_osrelease
+and
+.Va LD_PRELOAD
+in default shells environments,
+so that the
+.Nx
+version specified in
+.Va NETBSD_RELEASE
+overrides the host system version.
+See
+.Xr kver 3
+for more information.
+Defaults to
+.Ql no .
+.It PKG_DBDIR
+Location of the packages database.
+Defaults to
+.Pa /var/db/pkg .
+.It PKG_SYSCONFBASE
+Base directory of configuration files.
+Defaults to
+.Pa /usr/pkg/etc .
+.It PKGSRC_COMPILER
+List of values specifying the chain of compilers to invoke when building
+packages.
+Defaults to
+.Ql gcc .
+If you are defining
+.Va REAL_CCACHE ,
+remember to prepend
+.Ql ccache
+to this variable's value.
+.It PKGVULNDIR
+Directory where the
+.Pa vulnerabilities
+file will be installed (inside the chroot).
+Defaults to
+.Pa /usr/pkg/share .
+.It REAL_PKGVULNDIR
+Directory where the system-wide
+.Pa vulnerabilities
+file resides (outside the chroot).
+Defaults to
+.Pa /usr/pkgsrc/distfiles .
+.It ROOTSHELL
+The shell of the root user.
+Defaults to
+.Pa /bin/ksh .
+.It SETS
+A list of binary sets to be extracted inside
+.Sy DESTDIR .
+Defaults to
+.Ql base.tgz comp.tgz etc.tgz kern-GENERIC.tgz text.tgz .
+If no kernel is extracted by these sets, an empty
+.Pa /netbsd
+file is created inside the chroot.
+.It SETS_X11
+A list of binary sets of the X Window system.
+This has the same behavior
+as
+.Sy SETS .
+If this variable is set to
+.Ql no ,
+no X Window is configured inside the chroot
+jail and no other X variables take effect.
+Defaults to
+.Ql xbase.tgz xcomp.tgz xetc.tgz xfont.tgz xserver.tgz .
+.It SYNC_UMOUNT
+If set to
+.Ql yes ,
+run
+.Xr sync 8
+three times after all file systems have been unmounted.
+Defaults to
+.Ql no .
+.It USE_AUDIT_PACKAGES
+If set to
+.Ql yes ,
+let
+.Nm
+handle the
+.Pa vulnerabilities
+file automatically.
+This means that it will install the system-wide
+.Pa vulnerabilities
+file inside the chroot when needed, keeping both in sync.
+Defaults to
+.Ql yes .
+.It USE_GCC3
+If set to
+.Ql yes ,
+the GNU C Compiler version 3 will be installed inside the chroot
+environment and used to build all packages, using the
+.Pa lang/gcc3
+package.
+Defaults to
+.Ql no .
+.El
+.Ss Mounted file systems
+In order to avoid duplicating huge system trees,
+.Nm
+takes advantage of file system layers.
+By default, it uses
+.Xr mount_null 8 ,
+which duplicates a file system tree into another directory; although
+you may want to use
+.Xr mount_union 8 ,
+or even
+.Xr mount_overlay 8 .
+If the
+content of these variables is empty, that file system is not mounted.
+.Pp
+You can control which layer to use and which options you want with
+special configuration options, as explained below.
+.Pp
+These file systems are mounted before entering the chroot and unmounted
+after exiting.
+In order to know if file systems are mounted or not, the
+program uses a temporary file, called
+.Pa $DESTDIR/pkg_comp/tmp/mount.stat ,
+which controls the number of
+.Nm
+processes using the chroot environment.
+If some of them crashes unexpectedly and you notice it does not try
+to unmount the file systems, this status file may get out of sync.
+Be sure to check that NO file systems are mounted when issuing a
+.Sy removeroot .
+.Bl -tag -width indent
+.It REAL_CCACHE
+Specifies where a global ccache directory resides in the real system.
+Defaults to nothing, which disables the global cache.
+Keep in mind that this is specially useful to keep the cache across
+rebuilds of the sandbox, but be very careful if you plan to share a
+cache directory between different sandboxes, as this can lead to problems.
+.It REAL_DISTFILES
+Specifies where distfiles reside in the real system.
+Defaults to
+.Pa /usr/pkgsrc/distfiles .
+.It REAL_DISTFILES_OPTS
+Mount options.
+Defaults to
+.Sy -t null -o rw .
+.It REAL_PACKAGES
+Specifies where to build binary packages.
+This variable is specially useful.
+Defaults to
+.Pa /usr/pkgsrc/packages .
+.It REAL_PACKAGES_OPTS
+Mount options.
+Defaults to
+.Sy -t null -o rw .
+.It REAL_PKGSRC
+The pkgsrc tree.
+This can be useful if you want to use several pkgsrc trees independently.
+Defaults to
+.Pa /usr/pkgsrc .
+.It REAL_PKGSRC_OPTS
+Mount options.
+Defaults to
+.Sy -t null -o ro .
+.It REAL_SRC
+The src system tree.
+Usually useless, but may be needed by some packages.
+Defaults to
+.Pa /usr/src .
+.It REAL_SRC_OPTS
+Mount options.
+Defaults to
+.Sy -t null -o ro .
+.It MAKEROOT_HOOKS
+A whitespace separated list of functions or external scripts to be executed
+after the sandbox is created.
+Two arguments are given to each of them:
+.Ar $DESTDIR ,
+and the word
+.Ar makeroot .
+Defaults to nothing.
+.It MOUNT_HOOKS
+A whitespace separated list of functions or external scripts to be executed
+after file systems are mounted.
+Two arguments are given to each of them:
+.Ar $DESTDIR ,
+and the word
+.Ar mount .
+Defaults to nothing.
+.It UMOUNT_HOOKS
+A whitespace separated list of functions or external scripts to be executed
+before file systems are unmounted.
+Two arguments are given to each of them:
+.Ar $DESTDIR ,
+and the word
+.Ar umount .
+Defaults to nothing.
+.El
+.Sh TARGETS
+A target specifies what
+.Nm
+should do (as in make).
+The following list describes all supported targets,
+in the logical order you should call them.
+.Bl -tag -width indent
+.It maketemplate
+Create a sample
+.Ar conf_file .
+You should edit it after the creation as you will probably want to change
+the default configuration, specially paths.
+.It makeroot
+Create the chroot environment, based on the specs of the configuration file.
+This step is required before trying any other, except maketemplate.
+.It build
+Builds the specified packages inside the chroot.
+You can pass the package names as a relative path within pkgsrc or as the
+basename of the package directory (i.e. omitting the directory name).
+.It install
+Install the specified binary packages into the chroot.
+Package names can contain globs.
+The package files will be taken from within
+.Sy REAL_PACKAGES .
+.It chroot
+Enters the chroot environment.
+If no arguments are given,
+.Va ROOTSHELL
+is executed, otherwise whatever you typed.
+If the first argument begins with a word prefixed by
+.Li pkg_ ,
+then the
+.Ql chroot
+argument can be omitted (it is implied).
+.It removeroot
+Remove the entire chroot tree.
+You should do it with this target because it
+will take care to umount needed mount points.
+.It auto
+This executes several targets automatically, using
+.Sy AUTO_TARGET
+as
+.Sy BUILD_PKG_COMP_TARGET
+during the build.
+The order is: makeroot, build and removeroot.
+This is useful to create binary packages of several pkgsrc and their
+dependencies automatically.
+For this to be useful, you need to set
+.Sy REAL_PACKAGES
+and use
+.Sy AUTO_PACKAGES
+or pass package names through the command line.
+.Pp
+If the magic word
+.Ql resume
+is passed as the unique argument to this target,
+.Nm
+will attempt to resume a previous automatic build for the given configuration.
+.El
+.Sh NOTES
+This program uses nullfs to create virtual copies of real trees inside the
+chroot environment.
+.Pp
+You need to install the
+.Pa security/audit-packages
+package in the host system (and have an up to date vulnerabilities database)
+if you want security checks to work inside the
+chroot environment.
+.Sh SEE ALSO
+.Xr pkg_delete 1 ,
+.Xr pkgsrc 7 ,
+.Xr mount_null 8 ,
+.Xr sync 8 ,
+.Xr sysctl 8
+.Sh AUTHORS
+.An Julio M. Merino Vidal Aq Mt jmmv@NetBSD.org
diff --git a/pkgtools/pkg_comp1/files/pkg_comp.sh b/pkgtools/pkg_comp1/files/pkg_comp.sh
new file mode 100644
index 00000000000..fe10a7d1fec
--- /dev/null
+++ b/pkgtools/pkg_comp1/files/pkg_comp.sh
@@ -0,0 +1,1060 @@
+#!/bin/sh
+#
+# $NetBSD: pkg_comp.sh,v 1.1 2017/02/12 10:48:55 jmmv Exp $
+#
+# pkg_comp - Build packages inside a clean chroot environment
+# Copyright (c) 2002, 2003, 2004, 2005 Julio M. Merino Vidal <jmmv@NetBSD.org>
+#
+# 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.
+# 3. Neither the name of author nor the names of its contributors may
+#    be used to endorse or promote products derived from this software
+#    without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
+# ``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 FOUNDATION OR CONTRIBUTORS
+# 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.
+#
+
+ProgName="`basename $0`"
+
+# ----------------------------------------------------------------------
+# Default environment values and functions
+# ----------------------------------------------------------------------
+
+# USE_GCC3, CFLAGS, CPPFLAGS and CXXFLAGS are ommited from _MKCONF_VARS
+# as they require special handling.
+_MKCONF_VARS="WRKDIR_BASENAME MKOBJDIRS BSDSRCDIR WRKOBJDIR DISTDIR PACKAGES \
+              PKG_DEVELOPER CLEANDEPENDS LOCALBASE PKG_SYSCONFBASE \
+              CFLAGS CPPFLAGS CXXFLAGS USE_AUDIT_PACKAGES PKGVULNDIR \
+              PKGSRC_COMPILER \
+              LIBKVER_STANDALONE_PREFIX PKG_DBDIR"
+
+_TEMPLATE_VARS="DESTDIR ROOTSHELL BUILD_PKG_COMP_TARGET COPYROOTCFG DISTRIBDIR \
+		SETS SETS_X11 REAL_SRC REAL_SRC_OPTS REAL_PKGSRC \
+                REAL_PKGSRC_OPTS REAL_DISTFILES REAL_DISTFILES_OPTS \
+                REAL_PACKAGES REAL_PACKAGES_OPTS REAL_PKGVULNDIR \
+                NETBSD_RELEASE MAKEROOT_HOOKS MOUNT_HOOKS UMOUNT_HOOKS \
+                SYNC_UMOUNT AUTO_TARGET AUTO_PACKAGES BUILD_PACKAGES \
+                REAL_CCACHE LIBKVER_STANDALONE_PREFIX GENERATE_PKG_SUMMARY"
+
+_BUILD_RESUME=
+
+# env_clean
+#
+#   Sets all variables that may appear in the config file to the null
+#   string, so that we know the environment is in a consistent state.
+#
+env_clean()
+{
+    MKCONF_VARS=""
+    TEMPLATE_VARS=""
+    for var in ${_MKCONF_VARS} ${_TEMPLATE_VARS}; do
+        eval $var=\"\"
+    done
+}
+
+# env_setdefaults
+#
+#   Sets several reasonable defaults for many variables we will use.
+#   Also checks for deprecated variables and warns the user about them.
+#   To be called after reading the configuration file.
+#
+env_setdefaults()
+{
+    MKCONF_VARS="$MKCONF_VARS ${_MKCONF_VARS}"
+    TEMPLATE_VARS="$TEMPLATE_VARS ${_TEMPLATE_VARS}"
+
+    # Default values for variables that will be written to mk.conf.
+    : ${WRKDIR_BASENAME:=default}
+    : ${MKOBJDIRS:=yes}
+    : ${BSDSRCDIR:=/usr/src}
+    : ${WRKOBJDIR:=/pkg_comp/obj/pkgsrc}
+    : ${DISTDIR:=/pkg_comp/distfiles}
+    : ${PACKAGES:=/pkg_comp/packages}
+    : ${PKG_DEVELOPER:=yes}
+    : ${CLEANDEPENDS:=yes}
+    : ${LOCALBASE:=/usr/pkg}
+    : ${PKG_SYSCONFBASE:=/usr/pkg/etc}
+    : ${CFLAGS:=}
+    : ${CPPFLAGS:=}
+    : ${CXXFLAGS:=}
+    : ${USE_GCC3:=no}
+    : ${USE_AUDIT_PACKAGES:=yes}
+    : ${PKGVULNDIR:=/usr/pkg/share}
+    : ${PKGSRC_COMPILER:=gcc}
+    : ${PKG_DBDIR:=/var/db/pkg}
+
+    # Default values for global variables used in the script.
+    : ${DESTDIR:=/var/chroot/pkg_comp/default}
+    : ${ROOTSHELL:=/bin/ksh}
+    : ${COPYROOTCFG:=no}
+    : ${AUTO_TARGET:=package}
+    : ${BUILD_PKG_COMP_TARGET:=package}
+    : ${DISTRIBDIR:=/var/pub/NetBSD}
+    : ${SETS:=base.tgz comp.tgz etc.tgz kern-GENERIC.tgz text.tgz}
+    : ${SETS_X11:=xbase.tgz xcomp.tgz xetc.tgz xfont.tgz xserver.tgz}
+    : ${REAL_SRC:=/usr/src}
+    : ${REAL_SRC_OPTS:=-t null -o ro}
+    : ${REAL_PKGSRC:=/usr/pkgsrc}
+    : ${REAL_PKGSRC_OPTS:=-t null -o ro}
+    : ${REAL_DISTFILES:=/usr/pkgsrc/distfiles}
+    : ${REAL_DISTFILES_OPTS:=-t null -o rw}
+    : ${REAL_PACKAGES:=/usr/pkgsrc/packages}
+    : ${REAL_PACKAGES_OPTS:=-t null -o rw}
+    : ${REAL_PKGVULNDIR:=/usr/pkgsrc/distfiles}
+    : ${NETBSD_RELEASE:=no}
+    : ${LIBKVER_STANDALONE_PREFIX:=/libkver}
+    : ${MAKEROOT_HOOKS:=}
+    : ${MOUNT_HOOKS:=}
+    : ${UMOUNT_HOOKS:=}
+    : ${SYNC_UMOUNT:=no}
+    : ${REAL_CCACHE:=}
+    : ${GENERATE_PKG_SUMMARY:=yes}
+
+    if [ -n "${MAKE_PACKAGES}" ]; then
+        warn "MAKE_PACKAGES is deprecated; use {AUTO,BUILD}_PACKAGES instead."
+        : ${AUTO_PACKAGES:=${MAKE_PACKAGES}}
+        : ${BUILD_PACKAGES:=${MAKE_PACKAGES}}
+    fi
+
+    if [ -n "${MOUNT_SCRIPT}" ]; then
+        warn "MOUNT_SCRIPT is deprecated; use MOUNT_HOOKS instead."
+        : ${MOUNT_HOOKS:=${MOUNT_SCRIPT}}
+    fi
+
+    if [ -n "${UMOUNT_SCRIPT}" ]; then
+        warn "UMOUNT_SCRIPT is deprecated; use UMOUNT_HOOKS instead."
+        : ${UMOUNT_HOOKS:=${UMOUNT_SCRIPT}}
+    fi
+}
+
+# ----------------------------------------------------------------------
+# Misc functions
+# ----------------------------------------------------------------------
+
+# err msg
+#
+#   Shows the given error message and exit.
+#
+err()
+{
+    echo "$ProgName: $1" 1>&2
+    exit 1
+}
+
+# warn msg
+#
+#   Shows the given warning message.
+#
+warn()
+{
+    echo "$ProgName: $1" 1>&2
+}
+
+# usage
+#
+#   Shows an usage message and exits.
+#
+usage()
+{
+    echo "usage: $ProgName [-(c|C) conf_file] [-Nn] target [pkg_names]" 1>&2
+    exit 1
+}
+
+# copy_vulnerabilities
+#
+#   If USE_AUDIT_PACKAGES is set to 'yes', this function copies the
+#   system-wide pkg-vulnerabilities file inside the sandbox.
+#
+copy_vulnerabilities()
+{
+    if [ "$USE_AUDIT_PACKAGES" = "yes" ]; then
+        echo "PKG_COMP ==> Installing new \`pkg-vulnerabilities' file"
+        if [ ! -f "$REAL_PKGVULNDIR/pkg-vulnerabilities" ]; then
+            echo "$REAL_PKGVULNDIR/pkg-vulnerabilities not found."
+        else
+            mkdir -p $DESTDIR/$PKGVULNDIR
+            cp $REAL_PKGVULNDIR/pkg-vulnerabilities $DESTDIR/$PKGVULNDIR
+        fi
+    fi
+}
+
+# init_script filename
+#
+#   Create a script that will be used within the sandbox and write some
+#   common content to it.
+#
+init_script()
+{
+    rm -f $1
+    cat >$1 <<EOF
+#!/bin/sh
+# Generated by pkg_comp on `date`
+
+if [ -f ${LIBKVER_STANDALONE_PREFIX}/lib/libkver.so ]; then
+    LD_PRELOAD=${LIBKVER_STANDALONE_PREFIX}/lib/libkver.so; export LD_PRELOAD
+fi
+
+EOF
+}
+
+# ----------------------------------------------------------------------
+# Filesystem functions
+# ----------------------------------------------------------------------
+
+# fsmount
+#
+#   Mounts all sandboxed filesystems, if they are not mounted yet.
+#
+fsmount()
+{
+    echo "PKG_COMP ==> Mounting sandboxed filesystems"
+    if [ -f $fsstate ]; then
+        count=`cat $fsstate`
+        count=$(($count + 1))
+        echo "$count" > $fsstate
+        echo "Already mounted (maybe by another pkg_comp process?)"
+        return
+    else
+        echo "1" > $fsstate
+    fi
+
+    if [ -n "$REAL_SRC" ]; then
+        if [ ! -d "$REAL_SRC" ]; then
+            echo " failed."
+            fsumount
+            err "REAL_SRC $REAL_SRC disappeared"
+        fi
+        mount $REAL_SRC_OPTS $REAL_SRC $DESTDIR/usr/src
+    fi
+
+    if [ -n "$REAL_PKGSRC" ]; then
+        if [ ! -d "$REAL_PKGSRC" ]; then
+            echo " failed."
+            fsumount
+            err "REAL_PKGSRC $REAL_PKGSRC disappeared"
+        fi
+        mount $REAL_PKGSRC_OPTS $REAL_PKGSRC $DESTDIR/usr/pkgsrc
+    fi
+
+    if [ -n "$REAL_DISTFILES" ]; then
+        if [ ! -d "$REAL_DISTFILES" ]; then
+            echo " failed."
+            fsumount
+            err "REAL_DISTFILES $REAL_DISTFILES disappeared"
+        fi
+        mount $REAL_DISTFILES_OPTS $REAL_DISTFILES $DESTDIR/pkg_comp/distfiles
+    fi
+
+    if [ -n "$REAL_PACKAGES" ]; then
+        if [ ! -d "$REAL_PACKAGES" ]; then
+            echo " failed."
+            fsumount
+            err "REAL_PACKAGES $REAL_PACKAGES disappeared"
+        fi
+        mount $REAL_PACKAGES_OPTS $REAL_PACKAGES $DESTDIR/pkg_comp/packages
+    fi
+
+    if [ -n "${REAL_CCACHE}" ]; then
+        if [ ! -d "${REAL_CCACHE}" ]; then
+            echo " failed."
+            fsumount
+            err "REAL_CCACHE ${REAL_CCACHE} disappeared"
+        fi
+        mount -t null -o rw ${REAL_CCACHE} ${DESTDIR}/pkg_comp/ccache
+    fi
+
+    touch $fsstate
+
+    if [ -n "${MOUNT_HOOKS}" ]; then
+        echo "Executing mount hooks."
+        for h in ${MOUNT_HOOKS}; do
+            ${h} ${DESTDIR} mount
+        done
+    fi
+}
+
+# fsumount
+#
+#   Unmounts all sandboxed filesystems, if they are not in use any more.
+#
+fsumount()
+{
+    echo "PKG_COMP ==> Unmounting sandboxed filesystems"
+
+    if [ ! -f $fsstate ]; then
+        echo "None mounted."
+        return
+    fi
+
+    count=`cat $fsstate`
+    if [ $count -gt 1 ]; then
+        count=$(($count - 1))
+        echo "$count" > $fsstate
+        echo "Still in use (maybe by another pkg_comp process?)"
+        return
+    fi
+
+    if [ -n "${UMOUNT_HOOKS}" ]; then
+        echo "Executing umount hooks."
+        for h in ${UMOUNT_HOOKS}; do
+            ${h} ${DESTDIR} umount
+        done
+    fi
+
+    fsfailed=no
+
+    if [ -n "$REAL_SRC" -a -d "$REAL_SRC" ]; then
+        umount $DESTDIR/usr/src || fsfailed=yes
+    fi
+
+    if [ -n "$REAL_PKGSRC" -a -d "$REAL_PKGSRC" ]; then
+        umount $DESTDIR/usr/pkgsrc || fsfailed=yes
+    fi
+
+    if [ -n "$REAL_DISTFILES" -a -d "$REAL_DISTFILES" ]; then
+        umount $DESTDIR/pkg_comp/distfiles || fsfailed=yes
+    fi
+
+    if [ -n "$REAL_PACKAGES" -a -d "$REAL_PACKAGES" ]; then
+        umount $DESTDIR/pkg_comp/packages || fsfailed=yes
+    fi
+
+    if [ -n "${REAL_CCACHE}" -a -d "${REAL_CCACHE}" ]; then
+        umount ${DESTDIR}/pkg_comp/ccache || fsfailed=yes
+    fi
+
+    if [ "$SYNC_UMOUNT" != "no" ]; then
+        printf "Syncing: 1"
+        sync ; sleep 1
+        printf " 2"
+        sync ; sleep 1
+        printf " 3"
+        sync ; sleep 1
+        echo " done."
+    fi
+
+    if [ "$fsfailed" = "yes" ]; then
+        err "FATAL: failed to umount all filesystems"
+    else
+        rm $fsstate
+    fi
+}
+
+# ----------------------------------------------------------------------
+# maketemplate target
+# ----------------------------------------------------------------------
+
+# pkg_maketemplate
+#
+#   Generates a sample configuration file based on the list of variables
+#   given in TEMPLATE_VARS and MKCONF_VARS.
+#
+pkg_maketemplate()
+{
+    if [ -f "$conffile" ]; then
+        err "$conffile already exists"
+    fi
+
+    mkdir -p $confdir
+    cat > $conffile <<EOF
+# -*- sh -*-
+#
+# pkg_comp - configuration file
+# See pkg_comp(8) for a detailed description of each variable.
+#
+
+EOF
+
+    echo "# Variables used internally by pkg_comp." >> $conffile
+    for var in `echo $TEMPLATE_VARS | tr ' ' '\n' | sort`; do
+        eval val=\""\$$var"\"
+        echo "$var=\"$val\"" >> $conffile
+    done
+
+    echo >> $conffile
+    echo "# Default variables written to the generated mk.conf." >> $conffile
+    for var in `echo $MKCONF_VARS | tr ' ' '\n' | sort`; do
+        eval val=\""\$$var"\"
+        echo "$var=\"$val\"" >> $conffile
+    done
+
+    echo "pkg_comp: $conffile created.  Edit the file by hand now."
+}
+
+# ----------------------------------------------------------------------
+# makeroot target
+# ----------------------------------------------------------------------
+
+# pkg_makeroot
+#
+#   The 'makeroot' target.  This creates a new sandbox and then issues
+#   some stuff to be called only when using this specific target.
+#
+pkg_makeroot()
+{
+    makeroot
+
+    [ "$nflag" = "no" -a -n "$INSTALL_PACKAGES" ] &&
+        pkg_install $INSTALL_PACKAGES
+
+    if [ "$nflag" = "no" -a -n "$BUILD_PACKAGES" ]; then
+        for pkg in $BUILD_PACKAGES; do
+            build_and_install $pkg
+        done
+    fi
+}
+
+# makeroot
+#
+#   Creates a new sandbox.  This is independent from 'makeroot' and
+#   'auto' targets.
+#
+makeroot()
+{
+    # Check for directories that will be null mounted.
+    if [ -n "$REAL_SRC" -a ! -d "$REAL_SRC" ]; then
+        err "REAL_SRC $REAL_SRC does not exist"
+    fi
+
+    if [ -n "$REAL_PKGSRC" -a ! -d "$REAL_PKGSRC" ]; then
+        err "REAL_PKGSRC $REAL_PKGSRC does not exist"
+    fi
+
+    if [ -n "$REAL_DISTFILES" -a ! -d "$REAL_DISTFILES" ]; then
+        err "REAL_DISTFILES $REAL_DISTFILES does not exist"
+    fi
+
+    if [ -n "$REAL_PACKAGES" -a ! -d "$REAL_PACKAGES" ]; then
+        err "REAL_PACKAGES $REAL_PACKAGES does not exist"
+    fi
+
+    if echo ${PKGSRC_COMPILER} | grep ccache >/dev/null 2>&1 && \
+        [ -z "${REAL_CCACHE}" ]; then
+        warn "PKGSRC_COMPILER contains 'ccache' but REAL_CCACHE is unset"
+    elif [ -n "${REAL_CCACHE}" -a ! -d "${REAL_CCACHE}" ]; then
+        err "REAL_CCACHE ${REAL_CCACHE} does not exist"
+    fi
+
+    # Check for required directories.
+    if [ ! -d $DISTRIBDIR ]; then
+        err "DISTRIBDIR $DISTRIBDIR does not exist"
+    fi
+
+    if [ -d $DESTDIR ]; then
+        err "DESTDIR $DESTDIR already exists"
+    fi
+
+    if [ "$SETS_X11" = "no" ]; then
+        allsets="$SETS"
+    else
+        allsets="$SETS $SETS_X11"
+    fi
+
+    for s in $allsets; do
+        if [ ! -f $DISTRIBDIR/binary/sets/$s ]; then
+            err "$DISTRIBDIR/binary/sets/$s does not exist"
+        fi
+    done
+
+    echo "PKG_COMP ==> Creating sandbox \`${DESTDIR}'"
+
+    mkdir -p $DESTDIR
+    cd $DESTDIR
+
+    for s in $allsets; do
+        echo "Extracting $s..."
+        tar xzpf $DISTRIBDIR/binary/sets/$s
+    done
+
+    [ -f ${DESTDIR}/netbsd ] || touch ${DESTDIR}/netbsd
+
+    echo "Making device nodes..."
+    cd $DESTDIR/dev
+    ./MAKEDEV all
+    cd $DESTDIR
+
+    echo "Setting root's environment..."
+    chroot $DESTDIR chpass -s $ROOTSHELL
+    if [ "$COPYROOTCFG" = "yes" ]; then
+        cp /root/.* $DESTDIR/root >/dev/null 2>&1
+    fi
+    if [ -n "${REAL_CCACHE}" ]; then
+        # This is a workaround for older versions of ccache.mk that do not
+        # pass the CCACHE_DIR variable down to ccache.
+        ( cd ${DESTDIR}/root && ln -fs ../pkg_comp/ccache .ccache )
+    fi
+
+    echo "Setting up initial configuration..."
+
+    mkdir -p $DESTDIR/usr/src
+    mkdir -p $DESTDIR/usr/pkgsrc
+    mkdir -p $DESTDIR/pkg_comp/distfiles
+    mkdir -p $DESTDIR/pkg_comp/packages
+    mkdir -p $DESTDIR/pkg_comp/tmp
+    mkdir -p $DESTDIR/pkg_comp/obj/pkgsrc
+    [ -n "${REAL_CCACHE}" ] && mkdir -p ${DESTDIR}/pkg_comp/ccache
+    ( cd $DESTDIR && ln -s pkg_comp p )
+
+    # Set sh configuration
+    echo "umask 022" >> $DESTDIR/etc/profile
+    echo "ENV=/etc/shrc" >> $DESTDIR/etc/profile
+    echo "export PS1=\"pkg_comp:`basename $conffile`# \"" >> $DESTDIR/etc/shrc
+    echo "set -o emacs" >> $DESTDIR/etc/shrc
+    echo "export PKG_DBDIR=\"${PKG_DBDIR}\"" >> ${DESTDIR}/etc/shrc
+
+    # Set csh configuration
+    echo "umask 022" >> $DESTDIR/etc/csh.login
+    echo "set prompt=\"pkg_comp:`basename $conffile`# \"" >> $DESTDIR/etc/csh.login
+    echo "set prompt=\"pkg_comp:`basename $conffile`# \"" >> $DESTDIR/etc/csh.cshrc
+    echo "setenv PKG_DBDIR \"${PKG_DBDIR}\"" >> ${DESTDIR}/etc/csh.cshrc
+
+    cp /etc/resolv.conf $DESTDIR/etc/resolv.conf
+
+    makeroot_mkconf
+
+    echo "PKG_DBDIR=${PKG_DBDIR}" >> ${DESTDIR}/etc/pkg_install.conf
+
+    # From now on, filesystems may be mounted, so we need to trap
+    # signals to umount them.
+    trap "echo \"*** Process aborted ***\" ; fsumount ; exit 1" INT QUIT
+
+    makeroot_libkver
+
+    if [ "$USE_GCC3" = "yes" -a "$Nflag" = "no" ]; then
+        if [ -z "`echo $BUILD_PACKAGES $INSTALL_PACKAGES | grep gcc3`" ]; then
+            AVOID_GCC3=yes build_and_install lang/gcc3
+        fi
+    fi
+
+    makeroot_x11
+
+    if [ -n "${MAKEROOT_HOOKS}" ]; then
+        echo "Executing makeroot hooks."
+        for h in ${MAKEROOT_HOOKS}; do
+            ${h} ${DESTDIR} makeroot
+        done
+    fi
+}
+
+# makeroot_mkconf
+#
+#   Generates a mk.conf file inside the sandbox, based on the content
+#   of MKCONF_VARS and EXTRAMK.  Also handles some special stuff.
+#
+makeroot_mkconf()
+{
+    file="$DESTDIR/etc/mk.conf"
+
+    cat >> $file <<EOF
+#
+# /etc/mk.conf
+# File automatically generated by pkg_comp on `date`
+#
+.ifdef BSD_PKG_MK
+
+EOF
+
+    for var in $MKCONF_VARS; do
+        eval val=\""\$$var"\"
+        echo "$var ?= $val" >> $file
+    done
+
+    if [ -n "$EXTRAMK" ]; then
+        for mkfile in $EXTRAMK; do
+            if [ ! -f "$mkfile" ]; then
+                err "Cannot find $mkfile"
+            else
+                cat $mkfile >> $file
+            fi
+        done
+    fi
+
+    if [ "$USE_AUDIT_PACKAGES" != "yes" ]; then
+        echo "ALLOW_VULNERABLE_PACKAGES ?= YES" >> $file
+    fi
+
+    if [ "$USE_GCC3" = "yes" ]; then
+        cat >>$file <<EOF
+.if !defined(AVOID_GCC3) && exists(/usr/pkg/share/examples/gcc-3.3/mk.conf)
+USE_GCC3 = yes
+CFLAGS += $CFLAGS
+CPPFLAGS += $CPPFLAGS
+CXXFLAGS += $CXXFLAGS
+.include "/usr/pkg/share/examples/gcc-3.3/mk.conf"
+.endif
+EOF
+    else
+        cat >>$file <<EOF
+CFLAGS += $CFLAGS
+CPPFLAGS += $CPPFLAGS
+CXXFLAGS += $CXXFLAGS
+
+.endif # BSD_PKG_MK
+EOF
+    fi
+}
+
+# makeroot_libkver
+#
+#   If NETBSD_RELEASE is set to a version string, installs libkver
+#   inside the sandbox and configures it.
+#
+makeroot_libkver()
+{
+    local prefix script statfile
+
+    if [ "$NETBSD_RELEASE" != "no" ]; then
+        _BUILD_PKG_COMP_TARGET="$BUILD_PKG_COMP_TARGET"
+        BUILD_PKG_COMP_TARGET="standalone-install"
+        build_and_install pkgtools/libkver
+        BUILD_PKG_COMP_TARGET="$_BUILD_PKG_COMP_TARGET"
+        echo "LD_PRELOAD=${LIBKVER_STANDALONE_PREFIX}/lib/libkver.so; export LD_PRELOAD" >> $DESTDIR/etc/shrc
+        echo "setenv LD_PRELOAD ${LIBKVER_STANDALONE_PREFIX}/lib/libkver.so" >> $DESTDIR/etc/csh.login
+        echo "setenv LD_PRELOAD ${LIBKVER_STANDALONE_PREFIX}/lib/libkver.so" >> $DESTDIR/etc/csh.cshrc
+        ln -s "$NETBSD_RELEASE" $DESTDIR/libkver_osrelease
+    fi
+}
+
+# makeroot_x11
+#
+#   If X11 is enabled, installs x11-links inside the sandbox.
+#
+makeroot_x11()
+{
+    if [ "$SETS_X11" != "no" ]; then
+        [ "$Nflag" = "no" ] && build_and_install pkgtools/x11-links
+    fi
+}
+
+# ----------------------------------------------------------------------
+# auto target
+# ----------------------------------------------------------------------
+
+# pkg_auto pkgs
+#
+#   The 'auto' target.
+#
+pkg_auto()
+{
+    local pkgs rfile target
+
+    pkgs="${*:-${AUTO_PACKAGES}}"
+    rfile=${DESTDIR}/pkg_comp/tmp/auto.list
+    target="${AUTO_TARGET}"
+
+    [ -z "${REAL_PACKAGES}" ] && err "this is useless without REAL_PACKAGES"
+    [ -z "${pkgs}" ] &&
+        err "this is useless without AUTO_PACKAGES nor package names"
+
+    if [ "$1" = resume ]; then
+        [ -f ${rfile} ] || err "there is no auto build to resume"
+        pkgs=`cat ${rfile}`
+    elif [ -f ${rfile} ]; then
+        err "there is an stopped auto build; removeroot first or resume it"
+    else
+        makeroot
+
+        [ "$nflag" = "no" -a -n "$INSTALL_PACKAGES" ] &&
+            pkg_install $INSTALL_PACKAGES
+
+        echo ${pkgs} | tr ' ' '\n' > ${rfile}
+    fi
+
+    checkroot
+    _BUILD_RESUME=${rfile} BUILD_PKG_COMP_TARGET=${target} pkg_build ${pkgs}
+    pkg_removeroot
+}
+
+# generate_pkg_summary directory
+#
+#    Generates a pkg_summary.gz file in the specified directory.
+generate_pkg_summary()
+{
+    local directory="${1}"; shift
+
+    echo "PKG_COMP ==> Generating pkg_summary.tgz"
+    for pkg in "${directory}"/*.tgz; do pkg_info -X "${pkg}"; done \
+        | gzip -c >"${directory}"/pkg_summary.gz
+}
+
+# ----------------------------------------------------------------------
+# build target
+# ----------------------------------------------------------------------
+
+# pkg_build pkgs
+#
+#   The build target.  Also used as a helper function within this script
+#   to build several packages when needed.
+#
+pkg_build()
+{
+    local failed invalid p pkgs script statfile
+
+    pkgs=
+    invalid=
+    for pkg in "${@}"; do
+        local match="$(find_pkg "${pkg}")"
+        if [ -z "${match}" ]; then
+            invalid="${invalid} ${pkg}"
+        else
+            pkgs="${pkgs} ${match}"
+        fi
+    done
+    if [ -n "$invalid" ]; then
+        err "invalid packages:$invalid"
+    fi
+
+    # Build them
+    fsmount
+    copy_vulnerabilities
+    failed=""
+    for p in $pkgs; do
+        echo "PKG_COMP ==> Building and installing $p"
+        prefix=$(mktemp $DESTDIR/pkg_comp/tmp/pkg_comp-XXXXXX)
+        rm $prefix
+        script="$prefix.sh"
+        statfile="$prefix.stat"
+        init_script $script
+        cat >> $script <<EOF
+cd /usr/pkgsrc/$p
+make $BUILD_PKG_COMP_TARGET
+if [ \$? != 0 ]; then
+    touch /pkg_comp/tmp/`basename $statfile`
+fi
+make clean
+EOF
+        chmod +x $script
+        chroot $DESTDIR /pkg_comp/tmp/`basename $script`
+        rm $script
+        if [ -f $statfile ]; then
+            failed="$failed $p"
+            rm $statfile
+        elif [ -n "${_BUILD_RESUME}" ]; then
+            grep -v "^${p}\$" < ${_BUILD_RESUME} > ${_BUILD_RESUME}.new
+            mv ${_BUILD_RESUME}.new ${_BUILD_RESUME}
+        fi
+    done
+    fsumount
+    if [ -n "$failed" ]; then
+        echo "PKG_COMP ==> Build error summary"
+        echo "Build failed for:"
+        for p in $failed; do
+            echo "    $p"
+        done
+    fi
+    if [ "${GENERATE_PKG_SUMMARY}" = yes ]; then
+        generate_pkg_summary "${REAL_PACKAGES}/All"
+    fi
+}
+
+# find_pkg name
+#
+#   Checks if the given package exists and outputs its path within pkgsrc.
+#   Outputs nothing if the package is not found.
+find_pkg()
+{
+    local name="${1}"
+
+    case "${name}" in
+    */*)
+        if [ -d "${REAL_PKGSRC}/${name}" ]; then
+            echo "${name}"
+        else
+            :  # Not found; output nothing.
+        fi
+        ;;
+    *)
+        local match="$(cd "${REAL_PKGSRC}" && echo */"${name}")"
+        if [ -d "${REAL_PKGSRC}/${match}" ]; then
+            echo "${match}"
+        else
+            :  # Not found; output nothing.
+        fi
+    esac
+}
+
+# build_and_install pkg
+#
+#   Builds a package and ensures it gets installed.  The use of destdir to
+#   build packages may cause a package to get built but not installed,
+#   which is not OK for this script.  This is for internal usage only.
+#
+build_and_install()
+{
+    pkg=${1}
+    fsmount
+    if pkg_build ${pkg}; then
+        script=$(mktemp ${DESTDIR}/pkg_comp/tmp/pkg_comp-XXXXXX).sh
+        init_script ${script}
+        cat >>${script} <<EOF
+cd /usr/pkgsrc/${pkg}
+pkgname=\$(make show-var VARNAME=PKGNAME)
+if pkg_info -E \${pkgname} 2>/dev/null; then
+    :
+else
+    echo "PKG_COMP ==> Forcing installation of \${pkgname}"
+    cd /pkg_comp/packages/All
+    pkg_add \${pkgname}
+fi
+EOF
+        chmod +x ${script}
+        chroot ${DESTDIR} /pkg_comp/tmp/$(basename ${script})
+        rm ${script}
+    fi
+    fsumount
+}
+
+# ----------------------------------------------------------------------
+# install target
+# ----------------------------------------------------------------------
+
+# pkg_install pkgs
+#
+#   The install target.  Also used as a helper function within this
+#   script to install several packages when needed.
+#
+pkg_install()
+{
+    local failed pkgs stat
+
+    pkgs="$*"
+
+    [ -z "$REAL_PACKAGES" ] && err "REAL_PACKAGES is not set"
+
+    copy_vulnerabilities
+
+    fsmount
+    failed=""
+    for p in $(cd ${REAL_PACKAGES}/All && echo ${pkgs}); do
+        echo "PKG_COMP ==> Installing binary package: $p"
+        stat=$DESTDIR/pkg_comp/tmp/install.sh
+        init_script $stat
+        cat >> $stat <<EOF
+cd /pkg_comp/packages/All
+pkg_add $p
+EOF
+        chmod +x $stat
+        chroot $DESTDIR /pkg_comp/tmp/install.sh || failed="$failed $p"
+        rm $stat
+    done
+    fsumount
+    [ -n "$failed" ] && echo "Installation failed for:$failed"
+}
+
+# ----------------------------------------------------------------------
+# chroot target
+# ----------------------------------------------------------------------
+
+# pkg_chroot cmd
+#
+#   The 'chroot' target.
+#
+pkg_chroot()
+{
+    local prefix script exitstatus
+
+    [ -d $DESTDIR ] || err "$DESTDIR does not exist"
+
+    copy_vulnerabilities
+
+    fsmount
+    echo "PKG_COMP ==> Entering sandbox \`$DESTDIR'"
+    prefix=$(mktemp $DESTDIR/pkg_comp/tmp/pkg_comp-XXXXXX)
+    rm $prefix
+    script="$prefix.sh"
+    init_script $script
+    if [ $# -eq 0 ]; then
+        cat >> $script <<EOF
+ENV=/etc/shrc $ROOTSHELL
+EOF
+    else
+        cat >> $script <<EOF
+$*
+EOF
+    fi
+    chmod +x $script
+    ENV=/etc/shrc chroot $DESTDIR /pkg_comp/tmp/`basename $script`
+    exitstatus=$?
+    echo
+    rm $script
+    fsumount
+    return $exitstatus
+}
+
+# ----------------------------------------------------------------------
+# removeroot target
+# ----------------------------------------------------------------------
+
+# pkg_removeroot
+#
+#   The 'removeroot' target.
+#
+pkg_removeroot()
+{
+    [ -f $fsstate ] && err "filesystems may still be mounted; cannot remove"
+    echo "PKG_COMP ==> Removing sandbox \`${DESTDIR}'"
+    rm -rf $DESTDIR
+}
+
+# ----------------------------------------------------------------------
+# Main program
+# ----------------------------------------------------------------------
+
+confdir="$HOME/pkg_comp"
+
+# Parse options
+args=`getopt c:C:nN $*`
+if [ $? != 0 ]; then
+    usage
+fi
+set -- $args
+conffile=
+nflag=no
+Nflag=no
+while [ $# -gt 0 ]; do
+    case "$1" in
+        -c)
+            [ -n "$conffile" ] && usage
+            conffile="$confdir/$2.conf"
+            shift
+            ;;
+        -C)
+            [ -n "$conffile" ] && usage
+            conffile="$2"
+            shift
+            ;;
+        -n)
+            nflag=yes
+            ;;
+        -N)
+            nflag=yes
+            Nflag=yes
+            ;;
+        --)
+            shift; break
+            ;;
+    esac
+    shift
+done
+
+if [ $# -lt 1 ]; then
+    usage
+fi
+
+if [ -z "$conffile" ]; then
+    conffile="$confdir/default.conf"
+fi
+
+case "$1" in
+    pkg_*)
+        target=chroot
+        ;;
+    *)
+        target="$1"
+        shift
+        ;;
+esac
+args="$*"
+
+# readconf
+#
+#   Reads the configuration file and ensures that the environment is in
+#   a consistent state.
+#
+readconf()
+{
+    if [ -f $conffile ]; then
+        [ `id -u` -ne 0 ] && err "must be run as root"
+        env_clean
+        . $conffile
+        env_setdefaults
+    else
+        err "$conffile does not exist"
+    fi
+
+    fsstate="$DESTDIR/pkg_comp/tmp/mount.stat"
+}
+
+# checkroot
+#
+#   Checks that the sandbox is initialized, that it's a valid directory
+#   and configures a signal trap for SIGINT and SIGQUIT.
+#
+checkroot()
+{
+    if [ ! -d "$DESTDIR" ]; then
+        err "sandbox not initialized; use makeroot first."
+    fi
+    if [ "$DESTDIR" = "/" ]; then
+        err "DESTDIR cannot be /"
+    fi
+
+    # From now on, filesystems may be mounted, so we need to trap
+    # signals to umount them.
+    trap "echo \"*** Process aborted ***\" ; fsumount ; exit 1" INT QUIT
+}
+
+case "$target" in
+    maketemplate)
+        env_clean
+        env_setdefaults
+        pkg_maketemplate
+        exit 0
+        ;;
+    makeroot)
+        readconf
+        pkg_makeroot
+        exit 0
+        ;;
+    build)
+        readconf
+        checkroot
+        pkg_build $args
+        exit 0
+        ;;
+    install)
+        readconf
+        checkroot
+        pkg_install $args
+        exit 0
+        ;;
+    chroot)
+        readconf
+        checkroot
+        pkg_chroot $args
+        exit $?
+        ;;
+    removeroot)
+        readconf
+        checkroot
+        pkg_removeroot
+        ;;
+    auto)
+        readconf
+        pkg_auto $args
+        ;;
+    *)
+        err "unknown target \`$target'"
+        ;;
+esac
+
+exit 0
+
+# vim: expandtab:softtabstop=4:shiftwidth=4