From: Junio C Hamano <gitster@pobox.com>
Date: Sat, 17 Jul 2021 05:21:42 GMT
Subject: Re: [PATCH v3 11/34] fsmonitor-fs-listen-win32: stub in backend for Windows
Message-ID: <xmqq5yx9plax.fsf@gitster.g>
In-Reply-To: <xmqqa6mlplo7.fsf@gitster.g>

Junio C Hamano <gitster@pobox.com> writes:

> #!/bin/sh
> cat >make.file <<\EOF
> all::
> ifeq ($(FSMONITOR_DAEMON_BACKEND),)
> 	echo it is empty
> endif
> ifdef FSMONITOR_DAEMON_BACKEND

An obvious typo.  This must be "ifndef", of course.

> 	echo it is undefined
> endif
> EOF
>
> echo "unset???"
> make -f make.file
>
> echo "set to empty???"
> make -f make.file FSMONITOR_DAEMON_BACKEND=
>
> These two make invocations will give us the same result, showing
> that "is it set to empty" and "is it unset" are the same.