--- vecmath-1.6.2/build.xml	2022-03-23 12:44:59.978765748 +0100
+++ vecmath-1.6.2/build.xml	2022-03-23 12:45:19.926886606 +0100
@@ -22,7 +22,6 @@
     <mkdir dir="${class.dir}"/>
 
     <javac srcdir="${src.dir}"  destdir="${class.dir}"
-           source="1.6"   target="1.6"
            debug="true"
            debuglevel="lines,source"
            deprecation="on"