On Tue, Jan 1, 2013 at 5:57 PM, Dave Reisner <d_at_falconindy.com> wrote:
> On Tue, Jan 01, 2013 at 05:25:51PM +0100, Yang Tse wrote:
>> On Mon, Dec 31, 2012, Dave Reisner wrote:
>>
>> > Automake 1.13 made some changes surrounding tracing of the
>> > AC_CONFIG_MACRO_DIR macro. Curl appears to override this macro in
>> > m4/curl-override.m4 leading to ./buildconf failing rather strangely:
>> >
>> > [...]
>> >
>> > Any ideas?
>>
>> I'm going to push attached patch to libcurl's autobuilds in order to
>> verify that it doesn't break anything. We support autoconf way back to
>> version 2.57.
>>
>> The intended purpose of this patch is to provide a 'traceable'
>> AC_CONFIG_MACRO_DIR definition only when using an autoconf version
>> that does not provide it, instead of what we were doing up to now of
>> providing and overriding AC_CONFIG_MACRO_DIR for all autoconf
>> versions.
>>
>> Could you verify if it modifies or improves the situation also for you?
>
> Hrmmm, this patch has no effect. Digging into aclocal, it seems that
> AC_CONFIG_MACRO_DIR isn't actually an existant macro, and is internally
> aliased to AC_CONFIG_MACRO_DIRS (plural). I guess this is why your
> ifndef is a no-op. Mocking out AC_CONFIG_MACRO_DIRS and calling that
> in configure.ac works for me. See attached.

AC_CONFIG_MACRO_DIR won't get copied into aclocal.m4 with recent
automake versions, it will live in autoconf's general.m4 file wich
automake should have either copied into our single m4 subdirectory or
already processed and see the definition of AC_CONFIG_MACRO_DIR.

Using AC_CONFIG_MACRO_DIRS (notice the plural) in our configure.ac is
a most probably a no-way option for libcurl, we are not going to drop
support for all automake versions prior to 1.13. (We don't need either
that macro given that we have a single m4 subdirectory, and a single
instance of AC_CONFIG_MACRO_DIR in our configure.ac).

I'll look deeper into this, probably tomorrow, anyway. Something might
not be completely fit on our side, but I'm starting to suspect it
could be an automake or autoconf issue.

BTW, have you noticed that an automake 1.13.1 has already been
released today? Maybe it would be worth trying that one and see if the
issue persists.

-- 
-=[Yang]=-
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