1
2.SECONDEXPANSION:
3.PHONY: lib/bye.1 lib/bye.2 lib/bye.3 lib/bye.4
4all: lib/bye.x
5lib/bye.x: %.x: $$(wordlist 1, 99, %.1 %.2) $$(wordlist 1, 99, %.3 %.4); $(info $@ from $^)