diff --git a/demo/Makefile b/demo/Makefile
index 1a83143..cf92840 100644
--- a/demo/Makefile
+++ b/demo/Makefile
@@ -1,9 +1,9 @@
 all: demo0 demo0-static
 
-demo0-static: demo0.c ../../libver/ver.h ../lib/node.h ../../libver/libver.so ../lib/libnode.so Makefile
+demo0-static: demo0.c ../lib/node.h ../lib/libnode.a Makefile
 	gcc -g -o demo0-static -I ../lib -ldl demo0.c ../lib/libnode.a
 
-demo0: demo0.c ../../libver/ver.h ../lib/node.h ../../libver/libver.so ../lib/libnode.so Makefile
+demo0: demo0.c ../lib/node.h ../lib/libnode.so Makefile
 	gcc -g -o demo0 -I ../lib -L ../lib -ldl -lnode demo0.c
 
 clean:
diff --git a/lib/Makefile b/lib/Makefile
index dbaa2c6..98893fe 100644
--- a/lib/Makefile
+++ b/lib/Makefile
@@ -1,7 +1,12 @@
+ifdef _LIBVER_SUPPORT
+	INCLUDE_VER = ../../libver/ver.h
+	LIB_VER     = -I ../../libver
+endif
+
 all: libnode.a libnode.so
 
-libnode.o: libnode.c node.h libnode.h ../../libver/ver.h Makefile
-	gcc -c -g -o libnode.o -I . -I ../../libver libnode.c
+libnode.o: libnode.c node.h libnode.h $(INCLUDE_VER) Makefile
+	gcc -c -g -o libnode.o -I . $(LIB_VER) libnode.c
 
 libnode.a: libnode.o
 	ar -r libnode.a libnode.o
diff --git a/util/Makefile b/util/Makefile
index 45642fa..32c74a0 100644
--- a/util/Makefile
+++ b/util/Makefile
@@ -1,15 +1,16 @@
 ifdef _LIBVER_SUPPORT
-	INCLUDE_VER        = ../../libver/ver.h
-	LIB_VER_STATIC     = -I ../../libver ../../libver/libver.a
-	LIB_VER_DYNAMIC    = -I ../../libver -L ../../libver -lver
+	DEP_VER_STATIC  = ../../libver/ver.h ../../libver/libver.a
+	DEP_VER_DYNAMIC = ../../libver/ver.h ../../libver/libver.so
+	LIB_VER_STATIC  = -I ../../libver ../../libver/libver.a
+	LIB_VER_DYNAMIC = -I ../../libver -L ../../libver -lver
 endif
 
 all: ndbench ndbench-static
 
-ndbench-static: ndbench.c $(INCLUDE_VER) ../lib/node.h ../../libver/libver.so ../lib/libnode.so Makefile
+ndbench-static: ndbench.c $(DEP_VER_STATIC) ../lib/node.h ../lib/libnode.a Makefile
 	gcc -g -o ndbench-static -I ../lib ndbench.c -ldl $(LIB_VER_STATIC) ../lib/libnode.a
 
-ndbench: ndbench.c $(INCLUDE_VER) ../lib/node.h ../../libver/libver.so ../lib/libnode.so Makefile
+ndbench: ndbench.c $(DEP_VER_DYNAMIC) ../lib/node.h ../lib/libnode.so Makefile
 	gcc -g -o ndbench -ldl $(LIB_VER_DYNAMIC) -I ../lib -L ../lib -lnode ndbench.c
 
 clean: