Index: build.xml
===================================================================
--- build.xml	(revision 12805)
+++ build.xml	(working copy)
@@ -445,7 +445,9 @@
     </target>
 
     <target name="TAGS">
-      <apply executable="etags" parallel="true" verbose="true">
+      <delete file="TAGS"/>
+      <apply executable="etags" parallel="true" verbose="true" maxparallel="300">
+        <arg value="-a"/>
 	<arg value="--regex=|[ \t]+//[ \t]+###[ \t]+\([^ \t]+\)|\1|"/>
 	<fileset dir="${src.dir}">
 	  <patternset refid="abcl.source.java"/>
