make
Recursive use of make means using make as a command in a
makefile. This technique is useful when you want separate makefiles for
various subsystems that compose a larger system. For example, suppose you
have a subdirectory `subdir' which has its own makefile, and you would
like the containing directory's makefile to run make on the
subdirectory. You can do it by writing this:
subsystem:
cd subdir; $(MAKE)
or, equivalently, this (see section Summary of Options):
subsystem:
$(MAKE) -C subdir
You can write recursive make commands just by copying this example,
but there are many things to know about how they work and why, and about
how the sub-make relates to the top-level make.