diff -r 34ec8a580917 -r 5b16e2370ccb lib/Tools/console
--- a/lib/Tools/console	Fri Jul 25 16:58:28 2014 +0200
+++ b/lib/Tools/console	Fri Jul 25 17:13:30 2014 +0200
@@ -80,6 +80,7 @@
 
 declare -a JAVA_ARGS; eval "JAVA_ARGS=($ISABELLE_BUILD_JAVA_OPTIONS)"
 
+mkdir -p "$ISABELLE_TMP_PREFIX" || exit $?
 OPTIONS_FILE="$ISABELLE_TMP_PREFIX/options$$"
 
 "$ISABELLE_TOOL" java "${JAVA_ARGS[@]}" isabelle.Build_Console \