1CXX_SOURCES := main.cpp 2USE_LIBDL := 1 3 4a.out: lib_shared 5 6lib_shared: 7 $(MAKE) -f $(MAKEFILE_RULES) \ 8 DYLIB_ONLY=YES DYLIB_CXX_SOURCES=shared.cpp DYLIB_NAME=shared 9 10include Makefile.rules 11