I see no direct way to influence behavior common_opencl.mk
defines. However, you can redefine linking target with your own, e.g.:
EXECUTABLE := sub
CCFILES := SubFilHost.cpp
include ../../common/common_opencl.mk
EXTRALIBS:=libpng.a libz.a
$(TARGET): makedirectories $(OBJS) Makefile
$(VERBOSE)$(LINKLINE) $(EXTRALIBS)
(this is full Makefile example)