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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:
>> >
>> >   [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 Schwab, SuSE Labs, address@hidden
SuSE Linux Products GmbH, Maxfeldstraße 5, 90409 Nürnberg, Germany
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