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Re: [PATCH 3/6] Modernize AC_INCLUDES_DEFAULT and friends.
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From: |
Eric Blake |
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Subject: |
Re: [PATCH 3/6] Modernize AC_INCLUDES_DEFAULT and friends. |
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Date: |
Mon, 23 Sep 2013 07:44:20 -0600 |
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User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:17.0) Gecko/20130805 Thunderbird/17.0.8 |
On 09/21/2013 06:05 PM, Zack Weinberg wrote:
> On Sat, Sep 21, 2013 at 9:29 AM, Eric Blake <address@hidden> wrote:
>> On 09/14/2013 10:22 AM, Zack Weinberg wrote:
> ...
>>> (AC_HEADER_STDC, AC_UNISTD_H): AU_DEFUN to trigger
>>> _AC_INCLUDES_DEFAULT_REQUIREMENTS if it hasn't already happened,
>>> and do nothing else.
> ...
>> Ah, I see what you did - you expanded to ac_dummy="AC_INCLUDES_DEFAULT"
>> rather than actually spelling out the internal macro name - it triggers
>> the internal macro via AC_REQUIRES magic. Interesting :)
>
> Right. (In case you're wondering, the AS_IF is to ensure that the
> AC_REQUIRE expansion happens before the beginning of the
> ac_dummy="..." statement.)
>
> Given that, do you still want patch 6?
Yes, patch 6 is still worthwhile.
--
Eric Blake eblake redhat com +1-919-301-3266
Libvirt virtualization library http://libvirt.org
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[PATCH 6/6] Expose the checks done by AC_INCLUDES_DEFAULT as a public macro., Zack Weinberg, 2013/09/15
[PATCH 5/6] Use AC_CHECK_{DECLS, FUNCS, HEADERS}_ONCE more in specific-check macros., Zack Weinberg, 2013/09/15
[PATCH 2/6] AC_CHECK_HEADER/AC_CHECK_HEADERS: complete transition to compile tests., Zack Weinberg, 2013/09/15
[PATCH 1/6] * tests/local.at (AT_CHECK_M4): Support 'stderr' as fourth argument., Zack Weinberg, 2013/09/15