1
 2.SECONDEXPANSION:
 3hello.tsk:: hello.o $$(info 1 second expansion of $$@ prereqs); $(info 1 $@ from $<)
 4hello.tsk:: hello.o $$(info 2 second expansion of $$@ prereqs); $(info 2 $@ from $<)
 5bye.tsk:: bye.o $$(info 1 second expansion of $$@ prereqs); $(info 1 $@ from $<)
 6bye.tsk:: bye.o $$(info 2 second expansion of $$@ prereqs); $(info 2 $@ from $<)
 7hello.o:: $$(info 1 second expansion of $$@ prereqs); $(info 1 $@)
 8hello.o:: $$(info 2 second expansion of $$@ prereqs); $(info 2 $@)
 9bye.o:: $$(info 1 second expansion of $$@ prereqs); $(info 1 $@)
10bye.o:: $$(info 2 second expansion of $$@ prereqs); $(info 2 $@)