diff --git a/import-layers/yocto-poky/meta/files/ext-sdk-prepare.py b/import-layers/yocto-poky/meta/files/ext-sdk-prepare.py
index 605e2eb..78c1d16 100644
--- a/import-layers/yocto-poky/meta/files/ext-sdk-prepare.py
+++ b/import-layers/yocto-poky/meta/files/ext-sdk-prepare.py
@@ -5,93 +5,62 @@
 import sys
 import os
 import subprocess
+import signal
 
-def exec_watch(cmd, **options):
-    """Run program with stdout shown on sys.stdout"""
-    if isinstance(cmd, basestring) and not "shell" in options:
-        options["shell"] = True
+def reenable_sigint():
+    signal.signal(signal.SIGINT, signal.SIG_DFL)
 
-    process = subprocess.Popen(
-        cmd, stdout=subprocess.PIPE, stderr=subprocess.STDOUT, **options
-    )
+def run_command_interruptible(cmd):
+    """
+    Run a command with output displayed on the console, but ensure any Ctrl+C is
+    processed only by the child process.
+    """
+    signal.signal(signal.SIGINT, signal.SIG_IGN)
+    try:
+        ret = subprocess.call(cmd, shell=True, preexec_fn=reenable_sigint)
+    finally:
+        signal.signal(signal.SIGINT, signal.SIG_DFL)
+    return ret
 
-    buf = ''
-    while True:
-        out = process.stdout.read(1)
-        if out:
-            sys.stdout.write(out)
-            sys.stdout.flush()
-            buf += out
-        elif out == '' and process.poll() != None:
-            break
-
-    return process.returncode, buf
-
-def check_unexpected(lines, recipes):
-    """Check for unexpected output lines from dry run"""
-    unexpected = []
-    for line in lines.splitlines():
-        if 'Running task' in line:
-            for recipe in recipes:
-                if recipe in line:
-                    break
-            else:
-                line = line.split('Running', 1)[-1]
-                if 'do_rm_work' not in line:
-                    unexpected.append(line.rstrip())
-        elif 'Running setscene' in line:
-            unexpected.append(line.rstrip())
-    return unexpected
+def get_last_consolelog():
+    '''Return the most recent console log file'''
+    logdir = os.path.join(os.path.dirname(os.path.realpath(__file__)), 'tmp', 'log', 'cooker')
+    if os.path.exists(logdir):
+        mcdir = os.listdir(logdir)
+        if mcdir:
+            logdir = os.path.join(logdir, mcdir[0])
+            logfiles = [os.path.join(logdir, fn) for fn in os.listdir(logdir)]
+            logfiles.sort(key=os.path.getmtime)
+            if logfiles:
+                return os.path.join(logdir, logfiles[-1])
+    return None
 
 def main():
     if len(sys.argv) < 2:
+        print('Please specify output log file')
+        return 1
+    logfile = sys.argv[1]
+    if len(sys.argv) < 3:
         sdk_targets = []
     else:
-        sdk_targets = ' '.join(sys.argv[1:]).split()
+        sdk_targets = ' '.join(sys.argv[2:]).split()
     if not sdk_targets:
         # Just do a parse so the cache is primed
-        ret, _ = exec_watch('bitbake -p')
+        ret = run_command_interruptible('bitbake -p --quiet')
         return ret
 
-    print('Preparing SDK for %s...' % ', '.join(sdk_targets))
+    with open(logfile, 'a') as logf:
+        logf.write('Preparing SDK for %s...\n' % ', '.join(sdk_targets))
 
-    ret, out = exec_watch('bitbake %s --setscene-only' % ' '.join(sdk_targets))
-    if ret:
-        return ret
-
-    targetlist = []
-    for target in sdk_targets:
-        if ':' in target:
-            target = target.split(':')[0]
-        if not target in targetlist:
-            targetlist.append(target)
-
-    recipes = []
-    for target in targetlist:
-        try:
-            out = subprocess.check_output(('bitbake -e %s' % target).split(), stderr=subprocess.STDOUT)
-            for line in out.splitlines():
-                if line.startswith('FILE='):
-                    splitval = line.rstrip().split('=')
-                    if len(splitval) > 1:
-                        recipes.append(splitval[1].strip('"'))
-                    break
-        except subprocess.CalledProcessError as e:
-            print('ERROR: Failed to get recipe for target %s:\n%s' % (target, e.output))
-            return 1
-
-    try:
-        out = subprocess.check_output('bitbake %s -n' % ' '.join(sdk_targets), stderr=subprocess.STDOUT, shell=True)
-        unexpected = check_unexpected(out, recipes)
-    except subprocess.CalledProcessError as e:
-        print('ERROR: Failed to execute dry-run:\n%s' % e.output)
-        return 1
-
-    if unexpected:
-        print('ERROR: Unexpected tasks or setscene left over to be executed:')
-        for line in unexpected:
-            print('  ' + line)
-        return 1
+        ret = run_command_interruptible('BB_SETSCENE_ENFORCE=1 bitbake --quiet %s' % ' '.join(sdk_targets))
+        lastlog = get_last_consolelog()
+        if lastlog:
+            with open(lastlog, 'r') as f:
+                for line in f:
+                    logf.write(line)
+        if ret:
+            print('ERROR: SDK preparation failed: error log written to %s' % logfile)
+            return ret
 
 if __name__ == "__main__":
     try:
diff --git a/import-layers/yocto-poky/meta/files/toolchain-shar-extract.sh b/import-layers/yocto-poky/meta/files/toolchain-shar-extract.sh
index 397be11..9295ddc 100644
--- a/import-layers/yocto-poky/meta/files/toolchain-shar-extract.sh
+++ b/import-layers/yocto-poky/meta/files/toolchain-shar-extract.sh
@@ -1,6 +1,8 @@
 #!/bin/sh
 
 [ -z "$ENVCLEANED" ] && exec /usr/bin/env -i ENVCLEANED=1 HOME="$HOME" \
+	LC_ALL=en_US.UTF-8 \
+	TERM=$TERM \
 	http_proxy="$http_proxy" https_proxy="$https_proxy" ftp_proxy="$ftp_proxy" \
 	no_proxy="$no_proxy" all_proxy="$all_proxy" GIT_PROXY_COMMAND="$GIT_PROXY_COMMAND" "$0" "$@"
 [ -f /etc/environment ] && . /etc/environment
@@ -26,7 +28,7 @@
 if [ "$INST_ARCH" != "$SDK_ARCH" ]; then
 	# Allow for installation of ix86 SDK on x86_64 host
 	if [ "$INST_ARCH" != x86_64 -o "$SDK_ARCH" != ix86 ]; then
-		echo "Error: Installation machine not supported!"
+		echo "Error: Incompatible SDK installer! Your host is $INST_ARCH and this SDK was built for $SDK_ARCH hosts."
 		exit 1
 	fi
 fi
@@ -45,7 +47,8 @@
 savescripts=0
 verbose=0
 publish=0
-while getopts ":yd:npDRS" OPT; do
+listcontents=0
+while getopts ":yd:npDRSl" OPT; do
 	case $OPT in
 	y)
 		answer="Y"
@@ -70,6 +73,9 @@
 	S)
 		savescripts=1
 		;;
+	l)
+		listcontents=1
+		;;
 	*)
 		echo "Usage: $(basename $0) [-y] [-d <dir>]"
 		echo "  -y         Automatic yes to all prompts"
@@ -81,11 +87,18 @@
 		echo "  -S         Save relocation scripts"
 		echo "  -R         Do not relocate executables"
 		echo "  -D         use set -x to see what is going on"
+		echo "  -l         list files that will be extracted"
 		exit 1
 		;;
 	esac
 done
 
+payload_offset=$(($(grep -na -m1 "^MARKER:$" $0|cut -d':' -f1) + 1))
+if [ "$listcontents" = "1" ] ; then
+    tail -n +$payload_offset $0| tar tvJ || exit 1
+    exit
+fi
+
 titlestr="@SDK_TITLE@ installer version @SDK_VERSION@"
 printf "%s\n" "$titlestr"
 printf "%${#titlestr}s\n" | tr " " "="
@@ -130,6 +143,16 @@
 		     "characters such as spaces, @, \$ or +. Abort!"
 		exit 1
 	fi
+	# The build system doesn't work well with /tmp on NFS
+	fs_dev_path="$target_sdk_dir"
+	while [ ! -d "$fs_dev_path" ] ; do
+		fs_dev_path=`dirname $fs_dev_path`
+        done
+	fs_dev_type=`stat -f -c '%t' "$fs_dev_path"`
+	if [ "$fsdevtype" = "6969" ] ; then
+		echo "The target directory path $target_sdk_dir is on NFS, this is not possible. Abort!"
+		exit 1
+	fi
 else
 	if [ -n "$(echo $target_sdk_dir|grep ' ')" ]; then
 		echo "The target directory path ($target_sdk_dir) contains spaces. Abort!"
@@ -185,8 +208,6 @@
 	$SUDO_EXEC mkdir -p $target_sdk_dir >/dev/null 2>&1
 fi
 
-payload_offset=$(($(grep -na -m1 "^MARKER:$" $0|cut -d':' -f1) + 1))
-
 printf "Extracting SDK..."
 tail -n +$payload_offset $0| $SUDO_EXEC tar xJ -C $target_sdk_dir --checkpoint=.2500 $EXTRA_TAR_OPTIONS || exit 1
 echo "done"
diff --git a/import-layers/yocto-poky/meta/files/toolchain-shar-relocate.sh b/import-layers/yocto-poky/meta/files/toolchain-shar-relocate.sh
index d4bcf0e..e3c1001 100644
--- a/import-layers/yocto-poky/meta/files/toolchain-shar-relocate.sh
+++ b/import-layers/yocto-poky/meta/files/toolchain-shar-relocate.sh
@@ -1,3 +1,8 @@
+if ! xargs --version > /dev/null 2>&1; then
+	echo "xargs is required by the relocation script, please install it first. Abort!"
+	exit 1
+fi
+
 # fix dynamic loader paths in all ELF SDK binaries
 native_sysroot=$($SUDO_EXEC cat $env_setup_script |grep 'OECORE_NATIVE_SYSROOT='|cut -d'=' -f2|tr -d '"')
 dl_path=$($SUDO_EXEC find $native_sysroot/lib -name "ld-linux*")
@@ -7,6 +12,10 @@
 fi
 executable_files=$($SUDO_EXEC find $native_sysroot -type f \
 	\( -perm -0100 -o -perm -0010 -o -perm -0001 \) -printf "'%h/%f' ")
+if [ "x$executable_files" = "x" ]; then
+   echo "SDK relocate failed, could not get executalbe files"
+   exit 1
+fi
 
 tdir=`mktemp -d`
 if [ x$tdir = x ] ; then
@@ -14,7 +23,7 @@
    exit 1
 fi
 cat <<EOF >> $tdir/relocate_sdk.sh
-#!/bin/bash
+#!/bin/sh
 for py in python python2 python3
 do
 	PYTHON=\`which \${py} 2>/dev/null\`
@@ -53,9 +62,18 @@
         -e "s:^#! */usr/bin/perl.*:#! /usr/bin/env perl:g" \
         -e "s: /usr/bin/perl: /usr/bin/env perl:g"
 
+if [ $? -ne 0 ]; then
+	echo "Failed to replace perl. Relocate script failed. Abort!"
+	exit 1
+fi
+
 # change all symlinks pointing to @SDKPATH@
 for l in $($SUDO_EXEC find $native_sysroot -type l); do
 	$SUDO_EXEC ln -sfn $(readlink $l|$SUDO_EXEC sed -e "s:$DEFAULT_INSTALL_DIR:$target_sdk_dir:") $l
+	if [ $? -ne 0 ]; then
+		echo "Failed to setup symlinks. Relocate script failed. Abort!"
+		exit 1
+    fi
 done
 
 echo done