Index: lams_build/build_base.xml
===================================================================
diff -u -r7475d08afc280b5e2e5ddf04e8bf35e3166aaf80 -r47d555d1abf1b7ceca685f1a6186ff08fa2590bb
--- lams_build/build_base.xml	(.../build_base.xml)	(revision 7475d08afc280b5e2e5ddf04e8bf35e3166aaf80)
+++ lams_build/build_base.xml	(.../build_base.xml)	(revision 47d555d1abf1b7ceca685f1a6186ff08fa2590bb)
@@ -161,14 +161,15 @@
 		<echo>${ant.project.name}: Compiling Java sources</echo>
 		<javac srcdir="${src.java.dir}"
 			   compiler="modern"
-	           source="1.8"
-			   target="1.8"
+	           source="10"
+			   target="10"
                debug="on"
                includeantruntime="false"
 			   debuglevel="lines,vars,source"
                classpathref="libs.classpath"
                destdir="${basedir}/build/classes/java">
                <compilerarg line="-encoding utf-8"/>
+			   <compilerarg line="--add-modules java.activation"/>
         </javac>
         
 		<echo>${ant.project.name}: Copying additional non-Java resources</echo>