Merge the following from ^/projects/release-noxdev:

r269549, r269551, r269552, r269553, r269554, r269555, r269558, r269559,
r269560, r269561, r269628, r269629, r269630, r269635, r269637:

r269549:
  Create a new project branch, release-noxdev, for
  a sandbox workspace outside of head/ to update the
  release bits for arm builds since the deprecation of
  the XDEV and XDEV_ARCH make(1) variables.

r269551:
  Define load_chroot_env() and load_target_env()
  prototypes.

r269552:
  Call load_chroot_env() and load_target_env() where
  they can be mutually conflicting with regard to
  TARGET, TARGET_ARCH, XDEV, and XDEV_ARCH.

r269553:
  Add shebang line to arm/*.conf files since these
  should be considered to be executable (albeit not
  on their own) shell scripts.

r269554:
  Redefine load_chroot_env() and load_target_env() in
  the arm/*.conf files, and reindent.

r269555:
  Simplify where load_chroot_env() and load_target_env() are
  called.

r269558:
  Provide example in release.conf.sample for overriding the
  load_chroot_env() and load_target_env() prototypes.

r269559:
  Remove a gratuitous newline.

r269560:
  Unset potentially conflicting variables in load_chroot_env()
  and load_target_env().

r269561:
  Make global variables global, and accessible outside of
  the functions within which they were once defined.

r269628:
  Remove XDEV/XDEV_ARCH evaluation if EMBEDDEDBUILD is set.

r269629:
  In arm/release.sh, switch TARGET/TARGET_ARCH back to the
  original XDEV/XDEV_ARCH make(1) variables.

  In theory, this should have been a no-op, but the TARGET and
  TARGET_ARCH are now unset in load_target_env() to avoid
  collision with the chroot userland.

r269630:
  Export variables in the arm/*.conf files because they
  need to be passed through release.sh to arm/release.sh.

  Set MK_TESTS=no for the xdev target.

r269635:
  As part of the XDEV/XDEV_ARCH deprecation, the
  'xdev-links' target was intentionally no longer
  invoked automatically.

  Invoke the xdev-links target after xdev, which
  creates, for example, /usr/bin/armv6-freebsd-cc
  symlink to /usr/armv6-freebsd/usr/bin/cc.

r269637:
  Set TARGET and TARGET_ARCH to the XDEV and XDEV_ARCH
  counterparts for the xdev and xdev-links make(1)
  targets.

Sponsored by:	The FreeBSD Foundation

8 files changed, 173 insertions, 121 deletions

diff --git a/release/arm/BEAGLEBONE.conf b/release/arm/BEAGLEBONE.conf
index 49c0224..025bcb7 100644
--- a/release/arm/BEAGLEBONE.conf
+++ b/release/arm/BEAGLEBONE.conf
@@ -1,30 +1,37 @@
+#!/bin/sh
 #
 # $FreeBSD$
 #
 
+# Global variables.
+export SVNROOT="svn://svn.FreeBSD.org/"
+export SRCBRANCH="base/head@rHEAD"
+export DOCBRANCH="doc/head@rHEAD"
+export PORTBRANCH="ports/head@rHEAD"
+export NODOC=yes
+export WORLD_FLAGS="-j $(sysctl -n hw.ncpu)"
+export KERNEL_FLAGS="-j $(( $(( $(sysctl -n hw.ncpu) + 1 )) / 2 ))"
+export CHROOTDIR="/scratch"
+export EMBEDDEDBUILD=1
+
 # Build chroot configuration
-TARGET="amd64"
-TARGET_ARCH="amd64"
-SVNROOT="svn://svn.FreeBSD.org/"
-SRCBRANCH="base/head@rHEAD"
-DOCBRANCH="doc/head@rHEAD"
-PORTBRANCH="ports/head@rHEAD"
-NODOC=yes
+load_chroot_env() {
+	# Avoid collision with TARGET and XDEV.
+	unset XDEV XDEV_ARCH KERNEL
+	export TARGET="amd64"
+	export TARGET_ARCH="amd64"
+}
 
 # Build target configuration
-# Since this file is sourced by a script that runs another
-# script, these must be exported.
-set -a
-WORLD_FLAGS="-j $(sysctl -n hw.ncpu)"
-KERNEL_FLAGS="-j $(( $(( $(sysctl -n hw.ncpu) + 1 )) / 2 ))"
-CHROOTDIR="/scratch"
-EMBEDDEDBUILD=1
-EMBEDDEDPORTS="lang/python textproc/gsed"
-XDEV="arm"
-XDEV_ARCH="armv6"
-XDEV_FLAGS="WITH_GCC=1 WITH_GCC_BOOTSTRAP=1 WITHOUT_CLANG_IS_CC=1"
-KERNEL="BEAGLEBONE"
-CROCHETSRC="https://github.com/kientzle/crochet-freebsd"
-CROCHETBRANCH="trunk"
-set +a
-
+load_target_env() {
+	# Avoid collision with TARGET and XDEV.
+	unset TARGET TARGET_ARCH
+	export EMBEDDEDPORTS="lang/python textproc/gsed"
+	export XDEV="arm"
+	export XDEV_ARCH="armv6"
+	export XDEV_FLAGS="WITH_GCC=1 WITH_GCC_BOOTSTRAP=1 WITHOUT_CLANG_IS_CC=1"
+	export XDEV_FLAGS="${XDEV_FLAGS} MK_TESTS=no"
+	export KERNEL="BEAGLEBONE"
+	export CROCHETSRC="https://github.com/kientzle/crochet-freebsd"
+	export CROCHETBRANCH="trunk"
+}
diff --git a/release/arm/PANDABOARD.conf b/release/arm/PANDABOARD.conf
index d932dac..afc53d5 100644
--- a/release/arm/PANDABOARD.conf
+++ b/release/arm/PANDABOARD.conf
@@ -1,30 +1,37 @@
+#!/bin/sh
 #
 # $FreeBSD$
 #
 
+# Global variables.
+export SVNROOT="svn://svn.FreeBSD.org/"
+export SRCBRANCH="base/head@rHEAD"
+export DOCBRANCH="doc/head@rHEAD"
+export PORTBRANCH="ports/head@rHEAD"
+export NODOC=yes
+export WORLD_FLAGS="-j $(sysctl -n hw.ncpu)"
+export KERNEL_FLAGS="-j $(( $(( $(sysctl -n hw.ncpu) + 1 )) / 2 ))"
+export CHROOTDIR="/scratch"
+export EMBEDDEDBUILD=1
+export EMBEDDEDPORTS="lang/python textproc/gsed"
+
 # Build chroot configuration
-TARGET="amd64"
-TARGET_ARCH="amd64"
-SVNROOT="svn://svn.FreeBSD.org/"
-SRCBRANCH="base/head@rHEAD"
-DOCBRANCH="doc/head@rHEAD"
-PORTBRANCH="ports/head@rHEAD"
-NODOC=yes
+load_chroot_env() {
+	# Avoid collision with TARGET and XDEV.
+	unset XDEV XDEV_ARCH KERNEL
+	export TARGET="amd64"
+	export TARGET_ARCH="amd64"
+}
 
 # Build target configuration
-# Since this file is sourced by a script that runs another
-# script, these must be exported.
-set -a
-WORLD_FLAGS="-j $(sysctl -n hw.ncpu)"
-KERNEL_FLAGS="-j $(( $(( $(sysctl -n hw.ncpu) + 1 )) / 2 ))"
-CHROOTDIR="/scratch"
-EMBEDDEDBUILD=1
-EMBEDDEDPORTS="lang/python textproc/gsed"
-XDEV="arm"
-XDEV_ARCH="armv6"
-XDEV_FLAGS="WITH_GCC=1 WITH_GCC_BOOTSTRAP=1 WITHOUT_CLANG_IS_CC=1"
-KERNEL="PANDABOARD"
-CROCHETSRC="https://github.com/kientzle/crochet-freebsd"
-CROCHETBRANCH="trunk"
-set +a
-
+load_target_env() {
+	# Avoid collision with TARGET and XDEV.
+	unset TARGET TARGET_ARCH
+	export XDEV="arm"
+	export XDEV_ARCH="armv6"
+	export XDEV_FLAGS="WITH_GCC=1 WITH_GCC_BOOTSTRAP=1 WITHOUT_CLANG_IS_CC=1"
+	export XDEV_FLAGS="${XDEV_FLAGS} MK_TESTS=no"
+	export KERNEL="PANDABOARD"
+	export CROCHETSRC="https://github.com/kientzle/crochet-freebsd"
+	export CROCHETBRANCH="trunk"
+}
diff --git a/release/arm/RPI-B.conf b/release/arm/RPI-B.conf
index 01137c0..22ffb2b 100644
--- a/release/arm/RPI-B.conf
+++ b/release/arm/RPI-B.conf
@@ -1,32 +1,40 @@
+#!/bin/sh
 #
 # $FreeBSD$
 #
 
+# Global variables.
+export SVNROOT="svn://svn.FreeBSD.org/"
+export SRCBRANCH="base/head@rHEAD"
+export DOCBRANCH="doc/head@rHEAD"
+export PORTBRANCH="ports/head@rHEAD"
+export NODOC=yes
+export WORLD_FLAGS="-j $(sysctl -n hw.ncpu)"
+export KERNEL_FLAGS="-j $(( $(( $(sysctl -n hw.ncpu) + 1 )) / 2 ))"
+export CHROOTDIR="/scratch"
+export EMBEDDEDBUILD=1
+export EMBEDDEDPORTS="lang/python textproc/gsed"
+
 # Build chroot configuration
-TARGET="amd64"
-TARGET_ARCH="amd64"
-SVNROOT="svn://svn.FreeBSD.org/"
-SRCBRANCH="base/head@rHEAD"
-DOCBRANCH="doc/head@rHEAD"
-PORTBRANCH="ports/head@rHEAD"
-NODOC=yes
+load_chroot_env() {
+	# Avoid collision with TARGET and XDEV.
+	unset XDEV XDEV_ARCH KERNEL
+	export TARGET="amd64"
+	export TARGET_ARCH="amd64"
+}
 
 # Build target configuration
-# Since this file is sourced by a script that runs another
-# script, these must be exported.
-set -a
-WORLD_FLAGS="-j $(sysctl -n hw.ncpu)"
-KERNEL_FLAGS="-j $(( $(( $(sysctl -n hw.ncpu) + 1 )) / 2 ))"
-CHROOTDIR="/scratch"
-EMBEDDEDBUILD=1
-EMBEDDEDPORTS="lang/python textproc/gsed"
-XDEV="arm"
-XDEV_ARCH="armv6"
-XDEV_FLAGS="WITH_GCC=1 WITH_GCC_BOOTSTRAP=1 WITHOUT_CLANG_IS_CC=1"
-KERNEL="RPI-B"
-CROCHETSRC="https://github.com/kientzle/crochet-freebsd"
-CROCHETBRANCH="trunk"
-UBOOTSRC="https://github.com/gonzoua/u-boot-pi"
-UBOOTBRANCH="trunk"
-UBOOTDIR="/tmp/crochet/u-boot-rpi"
-set +a
+load_target_env() {
+	# Avoid collision with TARGET and XDEV.
+	unset TARGET TARGET_ARCH
+	export XDEV="arm"
+	export XDEV_ARCH="armv6"
+	export XDEV_FLAGS="WITH_GCC=1 WITH_GCC_BOOTSTRAP=1 WITHOUT_CLANG_IS_CC=1"
+	export XDEV_FLAGS="${XDEV_FLAGS} MK_TESTS=no"
+	export KERNEL="RPI-B"
+	export CROCHETSRC="https://github.com/kientzle/crochet-freebsd"
+	export CROCHETBRANCH="trunk"
+	export UBOOTSRC="https://github.com/gonzoua/u-boot-pi"
+	export UBOOTBRANCH="trunk"
+	export UBOOTDIR="/tmp/crochet/u-boot-rpi"
+}
diff --git a/release/arm/WANDBOARD-QUAD.conf b/release/arm/WANDBOARD-QUAD.conf
index 15c257f..67933df 100644
--- a/release/arm/WANDBOARD-QUAD.conf
+++ b/release/arm/WANDBOARD-QUAD.conf
@@ -1,30 +1,37 @@
+#!/bin/sh
 #
 # $FreeBSD$
 #
 
+# Global variables.
+export SVNROOT="svn://svn.FreeBSD.org/"
+export SRCBRANCH="base/head@rHEAD"
+export DOCBRANCH="doc/head@rHEAD"
+export PORTBRANCH="ports/head@rHEAD"
+export NODOC=yes
+export WORLD_FLAGS="-j $(sysctl -n hw.ncpu)"
+export KERNEL_FLAGS="-j $(( $(( $(sysctl -n hw.ncpu) + 1 )) / 2 ))"
+export CHROOTDIR="/scratch"
+export EMBEDDEDBUILD=1
+export EMBEDDEDPORTS="lang/python textproc/gsed"
+
 # Build chroot configuration
-TARGET="amd64"
-TARGET_ARCH="amd64"
-SVNROOT="svn://svn.FreeBSD.org/"
-SRCBRANCH="base/head@rHEAD"
-DOCBRANCH="doc/head@rHEAD"
-PORTBRANCH="ports/head@rHEAD"
-NODOC=yes
+load_chroot_env() {
+	# Avoid collision with TARGET and XDEV.
+	unset XDEV XDEV_ARCH KERNEL
+	export TARGET="amd64"
+	export TARGET_ARCH="amd64"
+}
 
 # Build target configuration
-# Since this file is sourced by a script that runs another
-# script, these must be exported.
-set -a
-WORLD_FLAGS="-j $(sysctl -n hw.ncpu)"
-KERNEL_FLAGS="-j $(( $(( $(sysctl -n hw.ncpu) + 1 )) / 2 ))"
-CHROOTDIR="/scratch"
-EMBEDDEDBUILD=1
-EMBEDDEDPORTS="lang/python textproc/gsed"
-XDEV="arm"
-XDEV_ARCH="armv6"
-XDEV_FLAGS="WITH_GCC=1 WITH_GCC_BOOTSTRAP=1 WITHOUT_CLANG_IS_CC=1"
-KERNEL="WANDBOARD-QUAD"
-CROCHETSRC="https://github.com/kientzle/crochet-freebsd"
-CROCHETBRANCH="trunk"
-set +a
-
+load_target_env() {
+	# Avoid collision with TARGET and XDEV.
+	unset TARGET TARGET_ARCH
+	export XDEV="arm"
+	export XDEV_ARCH="armv6"
+	export XDEV_FLAGS="WITH_GCC=1 WITH_GCC_BOOTSTRAP=1 WITHOUT_CLANG_IS_CC=1"
+	export XDEV_FLAGS="${XDEV_FLAGS} MK_TESTS=no"
+	export KERNEL="WANDBOARD-QUAD"
+	export CROCHETSRC="https://github.com/kientzle/crochet-freebsd"
+	export CROCHETBRANCH="trunk"
+}
diff --git a/release/arm/ZEDBOARD.conf b/release/arm/ZEDBOARD.conf
index a1b8ebf..c35d692 100644
--- a/release/arm/ZEDBOARD.conf
+++ b/release/arm/ZEDBOARD.conf
@@ -1,29 +1,36 @@
+#!/bin/sh
 #
 # $FreeBSD$
 #
 
+# Global variables.
+export SVNROOT="svn://svn.FreeBSD.org/"
+export SRCBRANCH="base/head@rHEAD"
+export DOCBRANCH="doc/head@rHEAD"
+export PORTBRANCH="ports/head@rHEAD"
+export NODOC=yes
+export WORLD_FLAGS="-j $(sysctl -n hw.ncpu)"
+export export KERNEL_FLAGS="-j $(( $(( $(sysctl -n hw.ncpu) + 1 )) / 2 ))"
+export CHROOTDIR="/scratch"
+export EMBEDDEDBUILD=1
+
 # Build chroot configuration
-TARGET="amd64"
-TARGET_ARCH="amd64"
-SVNROOT="svn://svn.FreeBSD.org/"
-SRCBRANCH="base/head@rHEAD"
-DOCBRANCH="doc/head@rHEAD"
-PORTBRANCH="ports/head@rHEAD"
-NODOC=yes
+load_chroot_env() {
+	# Avoid collision with TARGET and XDEV.
+	unset XDEV XDEV_ARCH KERNEL
+	export TARGET="amd64"
+	export TARGET_ARCH="amd64"
+}
 
 # Build target configuration
-# Since this file is sourced by a script that runs another
-# script, these must be exported.
-set -a
-WORLD_FLAGS="-j $(sysctl -n hw.ncpu)"
-KERNEL_FLAGS="-j $(( $(( $(sysctl -n hw.ncpu) + 1 )) / 2 ))"
-CHROOTDIR="/scratch"
-EMBEDDEDBUILD=1
-XDEV="arm"
-XDEV_ARCH="armv6"
-XDEV_FLAGS="WITH_GCC=1 WITH_GCC_BOOTSTRAP=1 WITHOUT_CLANG_IS_CC=1"
-KERNEL="ZEDBOARD"
-CROCHETSRC="https://github.com/kientzle/crochet-freebsd"
-CROCHETBRANCH="trunk"
-set +a
-
+load_target_env() {
+	# Avoid collision with TARGET and XDEV.
+	unset TARGET TARGET_ARCH
+	export XDEV="arm"
+	export XDEV_ARCH="armv6"
+	export XDEV_FLAGS="WITH_GCC=1 WITH_GCC_BOOTSTRAP=1 WITHOUT_CLANG_IS_CC=1"
+	export XDEV_FLAGS="${XDEV_FLAGS} MK_TESTS=no"
+	export KERNEL="ZEDBOARD"
+	export CROCHETSRC="https://github.com/kientzle/crochet-freebsd"
+	export CROCHETBRANCH="trunk"
+}
diff --git a/release/arm/release.sh b/release/arm/release.sh
index 479b8e5..cd7633a 100755
--- a/release/arm/release.sh
+++ b/release/arm/release.sh
@@ -94,9 +94,17 @@ install_uboot() {
 main() {
 	# Build the 'xdev' target for crochet.
 	eval chroot ${CHROOTDIR} make -C /usr/src \
-		${XDEV_FLAGS} TARGET=${XDEV} TARGET_ARCH=${XDEV_ARCH} \
+		${XDEV_FLAGS} XDEV=${XDEV} XDEV_ARCH=${XDEV_ARCH} \
+		TARGET=${XDEV} TARGET_ARCH=${XDEV_ARCH} \
 		${WORLD_FLAGS} xdev
 
+	# Install the cross-build symlinks to /usr/bin to make crochet
+	# happy.
+	eval chroot ${CHROOTDIR} make -C /usr/src \
+		${XDEV_FLAGS} XDEV=${XDEV} XDEV_ARCH=${XDEV_ARCH} \
+		TARGET=${XDEV} TARGET_ARCH=${XDEV_ARCH} \
+		${WORLD_FLAGS} xdev-links
+
 	# Run the ldconfig(8) startup script so /var/run/ld-elf*.so.hints
 	# is created.
 	eval chroot ${CHROOTDIR} /etc/rc.d/ldconfig forcerestart
diff --git a/release/release.conf.sample b/release/release.conf.sample
index 66f0cf9..32d4468 100644
--- a/release/release.conf.sample
+++ b/release/release.conf.sample
@@ -3,6 +3,11 @@
 # $FreeBSD$
 #
 
+# Redefine environment variables here to override prototypes
+# defined in release.sh.
+load_chroot_env() { }
+load_target_env() { }
+
 ## Set the directory within which the release will be built.
 CHROOTDIR="/scratch"
 
diff --git a/release/release.sh b/release/release.sh
index 73b706e..9d345a0 100755
--- a/release/release.sh
+++ b/release/release.sh
@@ -39,6 +39,10 @@
 PATH="/bin:/sbin:/usr/bin:/usr/sbin:/usr/local/bin"
 export PATH
 
+# Prototypes that can be redefined per-chroot or per-target.
+load_chroot_env() { }
+load_target_env() { }
+
 # The directory within which the release will be built.
 CHROOTDIR="/scratch"
 RELENGDIR="$(realpath $(dirname $(basename ${0})))"
@@ -124,10 +128,6 @@ DOCBRANCH="${SVNROOT}${DOCBRANCH}"
 PORTBRANCH="${SVNROOT}${PORTBRANCH}"
 
 if [ -n "${EMBEDDEDBUILD}" ]; then
-	if [ -z "${XDEV}" ] || [ -z "${XDEV_ARCH}" ]; then
-		echo "ERROR: XDEV and XDEV_ARCH must be set in ${RELEASECONF}."
-		exit 1
-	fi
 	WITH_DVD=
 	WITH_COMPRESSED_IMAGES=
 	NODOC=yes
@@ -161,6 +161,7 @@ if [ -n "${TARGET}" ] && [ -n "${TARGET_ARCH}" ]; then
 else
 	ARCH_FLAGS=
 fi
+load_chroot_env
 CHROOT_MAKEENV="${CHROOT_MAKEENV} MAKEOBJDIRPREFIX=${CHROOTDIR}/tmp/obj"
 CHROOT_WMAKEFLAGS="${MAKE_FLAGS} ${WORLD_FLAGS} ${CONF_FILES}"
 CHROOT_IMAKEFLAGS="${CONF_FILES}"
@@ -229,6 +230,7 @@ if [ -n "${EMBEDDEDBUILD}" ]; then
 	# release/, copy it to the /tmp/external directory within the chroot.
 	# This allows building embedded releases without relying on updated
 	# scripts and/or configurations to exist in the branch being built.
+	load_target_env
 	if [ -e ${RELENGDIR}/tools/${XDEV}/crochet-${KERNEL}.conf ] && \
 		[ -e ${RELENGDIR}/${XDEV}/release.sh ]; then
 			mkdir -p ${CHROOTDIR}/tmp/external/${XDEV}/
@@ -261,6 +263,7 @@ if [ -d ${CHROOTDIR}/usr/ports ]; then
 	fi
 fi
 
+load_target_env
 eval chroot ${CHROOTDIR} make -C /usr/src ${RELEASE_WMAKEFLAGS} buildworld
 eval chroot ${CHROOTDIR} make -C /usr/src ${RELEASE_KMAKEFLAGS} buildkernel
 eval chroot ${CHROOTDIR} make -C /usr/src/release ${RELEASE_RMAKEFLAGS} \