1 1.3 rillig make: "cond-op-not.mk" line 29: Not empty evaluates to true. 2 1.3 rillig make: "cond-op-not.mk" line 37: Not space evaluates to false. 3 1.3 rillig make: "cond-op-not.mk" line 41: Not 0 evaluates to true. 4 1.3 rillig make: "cond-op-not.mk" line 49: Not 1 evaluates to false. 5 1.3 rillig make: "cond-op-not.mk" line 55: Not word evaluates to false. 6 1.4 rillig make: "cond-op-not.mk" line 59: Malformed conditional (!) 7 1.4 rillig make: Fatal errors encountered -- cannot continue 8 1.4 rillig make: stopped in unit-tests 9 1.4 rillig exit status 1 10