# $NetBSD: cond-op-not.mk,v 1.3 2020/08/28 14:48:37 rillig Exp $ # # Tests for the ! operator in .if conditions. # The exclamation mark negates its operand. .if !1 .error .endif # Exclamation marks can be chained. # This doesn't happen in practice though. .if !!!1 .error .endif # The ! binds more tightly than the &&. .if !!0 && 1 .error .endif all: @:;