How to add a sub directory
1. In cvs/jsoc/target.mk, create this sub directory in the target tree. For example, the following line creates cvs/jsoc/src/base/drms,
.PHONY: $(OBJDIR)
$(OBJDIR):
...
+@[ -d $@/src/base/drms ] || mkdir -p $@/src/base/drms
...
2. Create a Rules.mk in the sub directory using the template cvs/jsoc/build/Rules.mk.template.
3. Include this Rules.mk in the parent directory's Rules.mk.