diff --git a/common.make b/common.make
index 00e58fc8..f40f736a 100644
--- a/common.make
+++ b/common.make
@@ -517,11 +517,19 @@ ifeq ($(JAVAH),)
   JAVAH = $(JAVA_HOME)/bin/javah
 endif
 
+#
+# The Java Doc Tool.
+#
+ifeq ($(JAVADOC),)
+  JAVADOC = $(JAVA_HOME)/bin/javadoc
+endif
+
 #
 # Flags useful for compilation
 #
 INTERNAL_JAVACFLAGS = -classpath ./:$(CLASSPATH)
 INTERNAL_JAVAHFLAGS = -classpath ./:$(CLASSPATH)
+#INTERNAL_JAVADOCFLAGS = 
 
 ## Local variables:
 ## mode: makefile