On 1/28/06, Peng Yu wrote: > The above method will replace old version ones with new version ones. > What if I want to keep both versions like main-g.o and main-o.o? > This can be a litle tricky: implicit rules may be used, something like this: %-g.o : %.cc $(COMPILE.c) -o $@ -c $< %-o.o : %.cc .... The sufficient enough scheme can be much more trickier. I simlify it a lot. ( Nevertheless, you may want to read: http://make.paulandlesley.org/autodep.html and http://aegis.sourceforge.net/auug97.pdf ) So, depending on whether you are in debug mode, you generate uniform suffix to your objects, usually it will be .g.o - debug, .o - optimized: SUFF := for dependency generation you define the following implicit rule: %.d : %.cc g++ -MM -MT $<$SUFF $(CPPFLAGS) $(CXXFLAGS) $< > $@ and you include all *.d files that are created: include $(MY_SRC_LIST: .cc=.d) Dima.
