update.sh create_configblock.sh: improve test for awk and exit on failure

On recent Ubuntu distributions gawk no longer supports awk -V which makes
the test fail.
Simulate our awk use case and test the result instead.

Additionally set 'set -e' to exit immediately on errors. Fix places where
a command returns not zero in 'normal' situations.
E.g. A full disk leads otherwise to funny effects.

Allow relative OUT_DIR.

1 files changed, 7 insertions, 0 deletions

diff --git a/recipes/images/files/library/create_configblock.sh b/recipes/images/files/library/create_configblock.sh
index f21b05c..3829fbb 100755
--- a/recipes/images/files/library/create_configblock.sh
+++ b/recipes/images/files/library/create_configblock.sh
@@ -1,5 +1,8 @@
 #! /bin/sh
 
+# exit on error
+set -e
+
 Usage()
 {
 	echo "create_configblock creates a configblock binary from the info on the module sticker."
@@ -31,6 +34,10 @@ while getopts "h" Option ; do
         esac
 done
 
+#sanity check for some programs
+AWKTEST=`echo 12345678abcdefgh | awk 'BEGIN{ FIELDWIDTHS = "8 8"} {print $2}'` || true
+[ "${AWKTEST}x" = "abcdefghx" ] || { echo >&2 "Program gawk not available.  Aborting."; exit 1; }
+
 # autotect MODTYPE from from rootfs directory
 CNT=`grep -c "T20" rootfs/etc/issue || true`
 if [ ${CNT} -ge 1 ] ; then