> Using a directory as a normal prerequisite is almost never what you
> want.
>
> You have two choices.
Three: wherever you currently declare a dependency on a directory,
instead declare a dependency on a .exists file *in* that directory.
Then have the rule for a .exists file create its directory and touch
the .exists file:
%/.exists:
mkdir -p $(@D) && touch $@
$(objDir)/%.d: %.cpp $(objDir)/.exists makefile
would then work just fine.
Eddy.
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