1 make: directive-ifmake.mk:14: ok: positive condition works 2 make: directive-ifmake.mk:26: ok: negation works 3 make: directive-ifmake.mk:36: ok: double negation works 4 make: directive-ifmake.mk:44: ok: both mentioned 5 make: directive-ifmake.mk:52: ok: only those mentioned 6 make: directive-ifmake.mk:63: Targets can even be added at parse time. 7 make: directive-ifmake.mk:82: ok 8 : first 9 : second 10 : late-target 11 make: don't know how to make !edge (continuing) 12 13 Stop. 14 make: stopped making "first second late-target !edge" in unit-tests 15 exit status 1 16