Re: multiple AM_INIT_AUTOMAKEs cause problems

[Christopher Sean Morrison]

That's unfortunate but good to know that it doesn't output both or a 
means to dynamically select it after running automake.  That being the 
case, I'm wondering if there is something that I can do at autogen.sh 
time instead (which runs either autoreconf if it can or all the steps 
individually if autoreconf fails).

Is there a way to pass "no-dependencies" to automake through 
autoreconf?  I of course could automatically edit the configure.ac 
depending on the existence of CVS directories to uncomment/comment the 
line or even just directly edit the AM_INIT_AUTOMAKE options to add the 
no-dependencies option.  That is less than desireable, though, for 
various hopefully evident reasons.

Alternatively, I should be able to run automake again after autoreconf 
completes and directly pass the no-dependencies option, perhaps 
requiring a run of config.status --recheck too?  Thanks again for the 
help and suggestions.

Cheers!
Sean


> Date: Wed, 29 Jun 2005 07:45:24 +0200
> From: Stepan Kasal <address@hidden>
> Subject: Re: multiple AM_INIT_AUTOMAKEs cause problems
> To: address@hidden
> Message-ID: <address@hidden>
> Content-Type: text/plain; charset=us-ascii
>
> Hello,
>
> On Tue, Jun 28, 2005 at 01:42:19PM -0400, Christopher Sean Morrison 
> wrote:
> >         AM_INIT_AUTOMAKE
> ...
> >         AM_INIT_AUTOMAKE([no-dependencies])
>
> I think that this option tells automake to generate different 
> Makefile.in,
> which is horter and doesn't include the code for dependency tracking.
>
> As the Makefile.in is distributed in the tarball, you cannot have both
> versions in one tarball.  Thus you have to decide at the time when
> automake is run, not when configure is run.
>
> You can use m4 conditions to achive what you want; for example:
>
> dnl Uncomment this to get a distribution tarball:
> dnl m4_define([foo_distrib])
> AM_INIT_AUTOMAKE(m4_ifdef([foo_distrib], [[no-dependencies]])
>
> or, if your CVS (non-production) versions have a specific version 
> number,
> say they end with a letter:
>
> m4_define([foo_version], [1.2.3a])
> AC_INIT([Foo], foo_version, address@hidden)
> AM_INIT_AUTOMAKE(m4_bmatch(foo_version, [[a-z]$], [[no-dependencies]]))
>
> I haven't tested these examples, but I hope they'll help you anyway.
>
> === A different kind of answer:
> With gcc, the dependency info is generated as a side effect of the
> compilation.  If you can use gcc, you might find out that the speedup
> is not worth all these complications.
>
> Have a nice day,
>         Stepan Kasal