-libusb-driver-DEBUG.so: usb-driver.c usb-driver.h
- gcc -fPIC -DDEBUG $(CFLAGS) $< -o $@ -ldl -lusb -lpthread -shared
+libusb-driver.so: usb-driver.c usb-driver.h Makefile
+ gcc $(CFLAGS) $< -o $@ -ldl -lusb -lpthread -shared
+
+libusb-driver-DEBUG.so: usb-driver.c usb-driver.h Makefile
+ gcc -DDEBUG $(CFLAGS) $< -o $@ -ldl -lusb -lpthread -shared