Re: Multiple subdirectories with non-similar configure needs

[Christian Rössel]

Hi Jim, hi Ralf, hi all,

On 03/29/2011 08:35 AM, Ralf Wildenhues wrote:
> Hello Jim,
>
> * Jim Galarowicz wrote on Mon, Mar 28, 2011 at 09:08:02PM CEST:
>> I was wondering if anyone can point me to any information on how to
>> configure from a top-level directory multiple sub-directories with
>> different configure requirements.
>
> Well, you can just write code yourself that calls the sub configure
> scripts with the arguments you intend for it.  Basically your own
> version of AC_CONFIG_SUBDIRS, if you like.

I wrote a macro (AC_CONFIG_SUBDIR_CUSTOM, patch applied) to pass
different arguments to different sub-configures. Like AC_CONFIG_SUBDIRS
it preserves
 * --cache-file
 * --silent
and passes always
 * --srcdir
 * --prefix
 * --disable-option-checking

AC_CONFIG_SUBDIR_CUSTOM takes at least two arguments, the directory
where the sub-configure resides and the additional arguments to be
passed to this specific sub-configure. An optional third parameter
controls if the sub-configure is recognized by a configure --help=recursive.


> GCC does this in its own tree (except the code is partly in the
> makefile, not only the toplevel configure script).
>
> For simple things, it often suffices to adjust $ac_configure_args during
> configure (beware of the eval quoting though!).
>
> However, you haven't written what kind of adjustments you need at all,
> so it's not clear how to help more.
>
>> My subdirectories are: libcbtf, libcbtf-xml, libcbtf-mrnet.  Each
>> subdirectory has different package requirements and has been set up
>> to use autoconf, automake, libtool, m4, etc..

Jim, you would use it like this in your toplevel configure.ac:

AC_CONFIG_SUBDIR_CUSTOM([libcbtf], [$arguments_to_libcbtf])
AC_CONFIG_SUBDIR_CUSTOM([libcbtf-xml], [$arguments_to_libcbtf-xml])
AC_CONFIG_SUBDIR_CUSTOM([libcbtf-mrnet], [$arguments_to_libcbtf-mrnet])

Cheers,
Christian

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AC_CONFIG_SUBDIR_CUSTOM.patch
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