Don't create the java install directory until something actually needs it!

config/RULES.Host

@@ -463,11 +463,6 @@ endif  #ifdef PROD
 #     Java classes and packages
 #
 
-DIRECTORY_TARGETS += $(INSTALL_JAVA)
-ifdef PACKAGE
-DIRECTORY_TARGETS += $(INSTALL_JAVA)/$(PACKAGE)
-endif
-
 vpath %.class $(INSTALL_JAVA)/$(PACKAGE)
 
 CLASSES += $(subst .java,.class,$(JAVA))
@@ -491,9 +486,6 @@ endif
 #JAR_DEPFILES +=  $(wildcard $(JAR_INPUT) $(addsuffix /*,$(JAR_INPUT)))
 JAR_DEPFILES +=  $(JAR_INPUT)
 
-$(DIRECTORY_TARGETS) :
-	$(MKDIR) $@
-
 build:: $(TESTCLASSES) $(JAR)
 
 buildInstall :: $(DIRECTORY_TARGETS) $(INSTALL_CLASSES) $(INSTALL_JAR) $(INSTALL_JAVADOC)
@@ -506,7 +498,7 @@ clean::
 	$(RM) $@
 	$(JAVACCMD) $<
 
-$(INSTALL_JAVA)/$(PACKAGE)/%.class:%.java
+$(INSTALL_JAVA)/$(PACKAGE)/%.class:%.java $(INSTALL_JAVA)/$(PACKAGE)
 	@echo Creating java class file $@
 	@$(RM) $@
 	$(JAVACCMD) -d $(INSTALL_JAVA) $<
@@ -521,7 +513,7 @@ $(JAR):%.jar:  $(JAR_DEPFILES)
 	@$(RM) $@
 	$(JARCMD)
 
-$(INSTALL_JAVA)/%.jar: %.jar
+$(INSTALL_JAVA)/%.jar: %.jar $(INSTALL_JAVA)
 	@echo "Installing jar file $@"
 	@$(INSTALL) -d -m 644 $< $(@D)