New function check_for_xorriso in releng_getopts.inc

releng/inc/releng_getopts.inc

@@ -83,6 +83,37 @@ cleanup() {
  fi 
 }
 
+check_for_xorriso() {
+ # $1: if "-x" then check executability
+
+ if test -z "$RELENG_XORRISO" -o "$RELENG_XORRISO" = "0"
+ then
+   print_help
+   print_specific_help
+   echo "${SELF}: Need -x  absolute or relative path to binary to be run."
+   echo
+   exit 31
+ fi
+ if [ x"$1" = x"-x" -a ! -x "$RELENG_XORRISO" ]
+ then
+   print_help
+   print_specific_help
+   echo "${SELF}: Path given by option -x does not lead to an executable file."
+   echo "Given is: '$RELENG_XORRISO'"
+   if test "$RELENG_XORRISO" = "xorriso"
+   then
+     xorriso=$(type -p xorriso)
+     if test -n "xorriso"
+     then
+       echo "Hint: Try '$xorriso'"
+     fi
+   fi
+   echo
+   exit 31
+ fi
+}
+
+
 #############################################
 
 next_is=

releng/manual_devices

@@ -62,11 +62,7 @@ do
 done
 
 # Insist in having a xorriso 
-if [ ! -x "$RELENG_XORRISO" ]; then
+check_for_xorriso -x
- print_help
- printf "\n${SELF}: -x  absolute or relative path to binary to be run.\n\n"
- exit 31
-fi
 
 #
 get_speeds() {