Re: back to directory dependencies

[Ralf Wildenhues]

Hi Baurzhan,

* Baurzhan Ismagulov wrote on Tue, Jun 28, 2005 at 04:59:36PM CEST:
> On Tue, Jun 07, 2005 at 04:16:26PM +0200, Ralf Wildenhues wrote:
>
> > > d1, d2, l1, l2, src1, src2 are existing projects with Makefile or
> > > configure.ac / Makefile.am. I want to leave them as they are and write a
> > > Makefile that would build them in the necessary order according to the
> > > dependencies.
> > > 
> > > So, how can I specify the build dependencies?
> > 
> > Put
> >   AC_CONFIG_SUBDIRS([d1 d2 l1 l2 src1 src2])
> > in toplevel configure.ac and
> >   SUBDIRS = d1 d2 l1 l2 src1 src2
> > in toplevel Makefile.am, in the order in which you want them configured
> > resp. built.
> 
> I've tried to implement that. I've put the following line in my topmost
> configure.ac:
> 
> AC_CONFIG_SUBDIRS(lib/l1 src1)
> 
> configure runs configure in lib/l1 and src1. However, src1/configure
> tries to link against lib/l1/libl1.a and fails since it can't find it.

Hmm.  I don't know whether AC_CONFIG_SUBDIRS can give you the
flexibility you want here.  If you unconditionally build both packages,
there is no need to check for libl1 during src1/configure.

I agree that this limits flexibility, but don't know of anything better
off my head (maybe someone else can suggest a better way).

> So I need to have lib/l1 built before I can configure src1.

> The only solution that I can think of is to use configure-stamp,
> make-stamp and introduce custom dependencies between them.

Or just take the existence of the library for granted: you know that it
will be built.

Regards,
Ralf