From: Paul Smith <paul@mad-scientist.net>
To: Jeff King <peff@peff.net>
Cc: Lars Schneider <larsxschneider@gmail.com>,
git@vger.kernel.org, tboegi@web.de, gitster@pobox.com
Subject: Re: [PATCH v1 1/2] config.mak.in: set NO_OPENSSL and APPLE_COMMON_CRYPTO for macOS >10.11
Date: Mon, 07 Nov 2016 12:49:33 -0500 [thread overview]
Message-ID: <1478540973.4171.22.camel@mad-scientist.net> (raw)
In-Reply-To: <20161107174559.t72vxxkckqdbxmbg@sigill.intra.peff.net>
On Mon, 2016-11-07 at 12:46 -0500, Jeff King wrote:
> Specifically I wanted to make sure that
>
> FOO = bar
> FOO =
> ifdef FOO
> ... something ...
> endif
>
> works as if FOO had never been set in the first place. Which it seems
> to, at least in GNU make (and that is the only one we support, for
> other reasons).
Yes, it will work. Confusingly, "ifdef" actually tests whether the
variable has a non-empty value, not whether it's defined:
> The 'ifdef' form takes the _name_ of a variable as its argument, not
> a reference to a variable. The value of that variable has a non-
> empty value, the TEXT-IF-TRUE is effective; otherwise, the TEXT-IF-
> FALSE, if any, is effective
*sigh* History...
next prev parent reply other threads:[~2016-11-07 17:49 UTC|newest]
Thread overview: 35+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-10-17 0:25 [PATCH v1 0/2] Fix default macOS build locally and on Travis CI larsxschneider
2016-10-17 0:25 ` [PATCH v1 1/2] config.mak.in: set NO_OPENSSL and APPLE_COMMON_CRYPTO for macOS >10.11 larsxschneider
2016-10-17 9:50 ` Jeff King
2016-11-06 19:35 ` Lars Schneider
2016-11-07 17:26 ` Jeff King
2016-11-07 17:36 ` Paul Smith
2016-11-07 17:46 ` Jeff King
2016-11-07 17:49 ` Paul Smith [this message]
2016-11-09 8:18 ` Torsten Bögershausen
2016-11-09 9:29 ` Lars Schneider
2016-11-09 10:51 ` Torsten Bögershausen
2016-11-10 11:13 ` [PATCH v2] Makefile: set NO_OPENSSL on macOS by default larsxschneider
2016-10-17 0:25 ` [PATCH v1 2/2] travis-ci: disable GIT_TEST_HTTPD for macOS larsxschneider
2016-11-06 21:42 ` Lars Schneider
2016-11-07 21:20 ` Jeff King
2016-11-10 11:07 ` Lars Schneider
2016-11-10 16:10 ` Jeff King
2016-11-10 21:33 ` Junio C Hamano
2016-11-10 21:43 ` Jeff King
2016-11-10 21:49 ` Junio C Hamano
2016-11-10 21:54 ` Jeff King
2016-11-11 8:22 ` Lars Schneider
2016-11-11 8:47 ` Jeff King
2016-11-11 9:13 ` Lars Schneider
2016-11-11 9:28 ` Jeff King
2016-11-15 12:07 ` Heiko Voigt
2016-11-15 14:18 ` Lars Schneider
2016-11-15 15:31 ` Jeff King
2016-11-16 14:39 ` Heiko Voigt
2016-11-16 20:01 ` Torsten Bögershausen
2016-11-09 23:39 ` [PATCH v1 0/2] Fix default macOS build locally and on Travis CI Junio C Hamano
2016-11-10 6:41 ` Torsten Bögershausen
2016-11-10 11:19 ` Lars Schneider
2016-11-10 21:34 ` Junio C Hamano
2016-11-11 9:01 ` Lars Schneider
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