Quoth Tomi Ollila on Jan 25 at 12:21 pm: > So that the target is newer than its prerequisites. > --- > emacs/Makefile.local | 3 +-- > 1 file changed, 1 insertion(+), 2 deletions(-) > > diff --git a/emacs/Makefile.local b/emacs/Makefile.local > index 42bfbd9..d5d402e 100644 > --- a/emacs/Makefile.local > +++ b/emacs/Makefile.local > @@ -32,8 +32,7 @@ emacs_bytecode = $(emacs_sources:.el=.elc) > ifeq ($(HAVE_EMACS),1) > $(dir)/.eldeps: $(dir)/Makefile.local $(dir)/make-deps.el $(emacs_sources) > $(call quiet,EMACS) --directory emacs -batch -l make-deps.el \ > - -f batch-make-deps $(emacs_sources) > $@.tmp && \ > - (cmp -s $@.tmp $@ || mv $@.tmp $@) > + -f batch-make-deps $(emacs_sources) > $@.tmp && mv $@.tmp $@ > -include $(dir)/.eldeps > endif > CLEAN+=$(dir)/.eldeps $(dir)/.eldeps.tmp Is this just so the rule doesn't get run again on the next make invocation (unless, of course, a dependent changed)? Interestingly, if any of the dependents have changed, but in ways that don't affect .eldeps, this change will make the build more expensive because it will trigger a make restart after .eldeps is updated.