Added rules for proper 'make clean ; make distclean' in examples

Added some extra cleaning in lib/c/Makefile

examples/Makefile

+SUBDIRS=duck_typing dynamic jgrafchart robot simple tcp \
+	twoway user_types wiki_example
+
 .PHONY: all
 
 all:
-	echo To be done...
+	echo More to be done...
 	$(MAKE) -C twoway all
 
 .PHONY: test
 test:
 	echo More to be done...
 	cd simple ; sh compile.sh && sh run.sh
-	$(MAKE) -C twoway test 
 	$(MAKE) -C duck_typing test
+	$(MAKE) -C twoway test 
+
+.PHONY: clean
+clean: $(SUBDIRS:%=clean-%)
+clean-%:
+	$(MAKE) -C $* clean 
 
-.PHONY: clean distclean
-clean distclean:
-	echo To be done...
-	$(MAKE) -C twoway clean
-	$(MAKE) -C duck_typing clean
+.PHONY: distclean
+distclean: $(SUBDIRS:%=distclean-%)
+distclean-%:
+	$(MAKE) -C $* distclean 

examples/dynamic/Makefile

+all:
+
+clean:
+
+distclean:

examples/jgrafchart/Makefile

@@ -24,9 +24,11 @@ ${JAVA_PKG}/client/TestClient.class: ${JAVA_PKG}/client/TestClient.java ${JAVA_P
 	javac -cp ${CLASSPATH} $<
 
 
+.PHONY: runjavaserver
 runjavaserver : ${JAVA_PKG}/server/TestServer.class
 	java -cp ${CLASSPATH} $(<:.class=)
 
+.PHONY: runjavaclient 
 runjavaclient : ${JAVA_PKG}/client/TestClient.class
 	java -cp ${CLASSPATH} $(<:.class=)
 
@@ -47,16 +49,23 @@ ${TLCFILE}.c : ${TLCFILE}.lc
 
 all: client testserver ${JAVA_PKG}/server/TestServer.class ${JAVA_PKG}/client/TestClient.class turtleclient
 
-.PHONY: clean runclient runserver runjavaserver runjavaclient turtleclient
+.PHONY: clean
 clean :
-	rm ${LCFILE}.c ${LCFILE}.h client testserver turtleclient
-	rm  ${JAVA_PKG}/server/*.class ${JAVA_PKG}/client/*.class ${JAVA_PKG}/gen/* 
+	rm -f ${LCFILE}.c ${LCFILE}.h client testserver turtleclient
+	rm -f ${JAVA_PKG}/server/*.class ${JAVA_PKG}/client/*.class 
+	rm -f ${JAVA_PKG}/gen/* 
 
+.PHONY: distclean
+distclean: clean 
+
+.PHONY: runclient
 runclient : client
 	LD_LIBRARY_PATH=${LCLIBDIR} ./$< localhost 9999
 
+.PHONY: runserver
 runserver : testserver
 	LD_LIBRARY_PATH=${LCLIBDIR} ./$< 9999
 
+.PHONY: runtclient
 runtclient : turtleclient
 	LD_LIBRARY_PATH=${LCLIBDIR} ./$< localhost 8082

examples/robot/Makefile

+all:
+
+clean:
+
+distclean:

examples/simple/Makefile

+all:
+
+clean:
+
+distclean:
+	rm -rf gen

examples/tcp/Makefile

@@ -51,4 +51,8 @@ runclient : ${JAVA_PKG}/client/TestClient.class
 	java -cp ${CLASSPATH} $(<:.class=)
 
 clean :
-	rm  ${JAVA_PKG}/server/*.class ${JAVA_PKG}/client/*.class ${JAVA_PKG}/gen/* 
+	rm -f ${JAVA_PKG}/server/*.class 
+	rm -f ${JAVA_PKG}/client/*.class 
+	rm -f ${JAVA_PKG}/gen/* 
+
+distclean: clean

examples/twoway/Makefile

@@ -32,8 +32,8 @@ gen/server: server.c
 	$(CC) -o $@ $(CFLAGS) $^ -lpthread \
 		-L../../lib/c -llabcomm 
 
-.PHONY: clean
-clean:
+.PHONY: clean distclean
+clean distclean:
 	rm -rf gen
 
 gen/decimating.o: decimating.h

examples/user_types/Makefile

+all:
+
+clean:
+
+distclean:

examples/wiki_example/Makefile

+all:
+
+clean:
+
+distclean:

lib/c/Makefile

@@ -168,6 +168,7 @@ clean:
 	$(RM) test/test_labcomm_errors
 	$(RM) test/testdata/gen/*.[cho]
 	$(RM) test/gen/*.[cho]
+	-rmdir test/gen
 	for x in $(TESTS); do \
 		$(RM) $(TEST_DIR)/$$x ; \
 	done