1 1.2 rillig make: "directive-ifdef.mk" line 12: Function calls in .ifdef are possible. 2 1.3 rillig make: "directive-ifdef.mk" line 23: String literals are tested for emptiness. 3 1.3 rillig make: "directive-ifdef.mk" line 27: String literals are tested for emptiness. Whitespace is non-empty. 4 1.1 rillig exit status 0 5