Re: Make: Unexpected Behavior with Dependencies and include Statement

[Edward Welbourne]

> I was thinking to build the objects but not the dependencies. We do a lot
> of one-time only builds, where we don't need dependencies at all.

In that case, leave out the include of any .d whose .o doesn't exist;
you fatuously know you need to build the .o, so you don't need to know
its dependencies. <code>

src = various.c
obj = $(src:.c=.o)
# etc.

dep = $(patsubst %.o %.d, $(wildcard $(obj)))
ifneq (,$(dep))
-include $(dep)
endif

</code>

If you *also* build .d as a side-effect of building each .o, you'll have
all needed .d files in time for the next build.

        Eddy.