1 # $NetBSD: directive-ifndef.mk,v 1.6 2020/10/24 08:46:08 rillig Exp $
3 # Tests for the .ifndef directive, which can be used for multiple-inclusion
4 # guards. In contrast to C, where #ifndef and #define nicely line up the
5 # macro name, there is no such syntax in make. Therefore, it is more
6 # common to use .if !defined(GUARD) instead.
10 . info guarded section
15 . info guarded section
20 . info guarded section