diff -up frysk-0.4/frysk-common/Makefile.rules.bin-antlr frysk-0.4/frysk-common/Makefile.rules
--- frysk-0.4/frysk-common/Makefile.rules.bin-antlr	2012-01-23 20:47:12.479000002 -0500
+++ frysk-0.4/frysk-common/Makefile.rules	2012-01-23 20:48:29.693998397 -0500
@@ -567,9 +567,7 @@ endif
 # running the generated files through the compiler and then "fix" the
 # warnings.  Reuse the tmp directory for successive runs on related .g files.
 
-ANTLR = $(JAVA) \
-	-classpath @abs_builddir@/../frysk-imports/antlr.jar \
-	antlr.Tool
+ANTLR = antlr
 
 SUFFIXES += .antlred .g
 .g.antlred: