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Re: AC_CHECK_FUNC with empty else path
From: |
Andreas Schwab |
Subject: |
Re: AC_CHECK_FUNC with empty else path |
Date: |
Sat, 08 Mar 2008 10:26:54 +0100 |
User-agent: |
Gnus/5.110006 (No Gnus v0.6) Emacs/22.1 (gnu/linux) |
NightStrike <address@hidden> writes:
> On 3/8/08, Andreas Schwab <address@hidden> wrote:
>> NightStrike <address@hidden> writes:
>>
>> > If I do this:
>> >
>> > AC_CHECK_FUNC(
>> > [chokeme],
>> > [],
>> > []
>> > )
>>
>> The else part is not empty, it consists of explicit whitespace. When
>> collecting arguments only unquoted leading whitespace is skipped by m4,
>> trailing whitespace (quoted or not) is preserved. You need to put the
>> closing paren immediatly after the closing quote of the argument.
>
> Is that something I should always do? I've been consistently putting
> the closing paren on its on line. Is that a "never"?
You can instead use dnl to ignore the trailing whitespace, provided the
closing paren is in column 1.
Andreas.
--
Andreas Schwab, SuSE Labs, address@hidden
SuSE Linux Products GmbH, Maxfeldstraße 5, 90409 Nürnberg, Germany
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