From: Ramsay Jones <ramsay@ramsayjones.plus.com>
To: "Ævar Arnfjörð Bjarmason" <avarab@gmail.com>,
"Johannes Schindelin" <Johannes.Schindelin@gmx.de>
Cc: Rich Felker <dalias@libc.org>, Jeff King <peff@peff.net>,
Git <git@vger.kernel.org>,
musl@lists.openwall.com
Subject: Re: Regression: git no longer works with musl libc's regex impl
Date: Thu, 6 Oct 2016 23:42:01 +0100 [thread overview]
Message-ID: <20336ac7-a494-d725-f928-834b1b3194fe@ramsayjones.plus.com> (raw)
In-Reply-To: <CACBZZX4XPqZauD_M_ieOwVauT1fi3MQb4+6taELQaRG9M-Kz_w@mail.gmail.com>
On 06/10/16 20:18, Ævar Arnfjörð Bjarmason wrote:
> On Tue, Oct 4, 2016 at 6:08 PM, Johannes Schindelin
> <Johannes.Schindelin@gmx.de> wrote:
>> As to making NO_REGEX conditional on REG_STARTEND: you are talking about
>> apples and oranges here. NO_REGEX is a Makefile flag, while REG_STARTEND
>> is a C preprocessor macro.
>>
>> Unless you can convince the rest of the Git developers (you would not
>> convince me) to simulate autoconf by compiling an executable every time
>> `make` is run, to determine whether REG_STARTEND is defined, this is a
>> no-go.
>
> But just to clarify, does anyone have any objection to making our
> configure.ac compile a C program to check for this sort of thing?
> Because that seems like the easiest solution to this class of problem.
Err, you do know that we already do that, right?
[see commit a1e3b669 ("autoconf: don't use platform regex if it lacks REG_STARTEND", 17-08-2010)]
In fact, if you run the auto tools on cygwin, you get a different setting
for NO_REGEX than via config.mak.uname. Which is why I don't run configure
on cygwin. :-D
[The issue is exposed by t7008-grep-binary.sh, where the cygwin native
regex library matches '.' in a pattern with the NUL character. ie the
test_expect_failure test passes.]
ATB,
Ramsay Jones
next prev parent reply other threads:[~2016-10-06 22:42 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-10-04 15:08 Regression: git no longer works with musl libc's regex impl Rich Felker
2016-10-04 15:27 ` Jeff King
2016-10-04 15:40 ` Rich Felker
2016-10-04 16:08 ` Johannes Schindelin
2016-10-04 16:11 ` Rich Felker
2016-10-04 17:16 ` Johannes Schindelin
2016-10-04 18:00 ` Ray Donnelly
2016-10-04 17:39 ` [musl] " Rich Felker
2016-10-05 11:17 ` Johannes Schindelin
2016-10-05 13:01 ` Szabolcs Nagy
2016-10-05 13:15 ` Rich Felker
2016-10-04 22:06 ` James B
2016-10-04 22:33 ` Rich Felker
2016-10-04 22:48 ` Junio C Hamano
2016-10-05 13:11 ` Jakub Narębski
2016-10-05 16:15 ` [musl] " Rich Felker
2016-10-05 10:41 ` Johannes Schindelin
2016-10-05 11:59 ` James B
2016-10-05 16:11 ` Jeff King
2016-10-05 16:27 ` Rich Felker
2016-10-06 10:44 ` Johannes Schindelin
2016-10-06 19:18 ` Ævar Arnfjörð Bjarmason
2016-10-06 19:23 ` Jeff King
2016-10-06 19:25 ` Rich Felker
2016-10-06 19:28 ` Jeff King
2016-10-06 22:42 ` Ramsay Jones [this message]
2016-10-07 11:30 ` Jakub Narębski
2016-10-04 16:01 ` Johannes Schindelin
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