Re: TODO

[Bob Friesenhahn]

On Wed, 10 Nov 2004, Noah Misch wrote:

> On Wed, Nov 10, 2004 at 01:17:19AM +0100, Alexandre Duret-Lutz wrote:
> >   - the relinking dependency debacle:
> >
> > For libtool to relink libraries when installing them, all
> > dependencies must have been installed.  However automake cannot
> > pre-compute this installation order when it is run, and
> > computing it at compile-time look overly complicated and error
> > prone.  Instead, would it make sense to support a two-stage
>
> The core problem appears to be that an Automake-generated Makefile.in uses
> dependencies when building installable products but then installs them in
> destination_PRIMARY batches without observing the dependencies it already knows.
> Indeed, if Automake did not know the dependency graph of each object, it could
> not build them reliably.

The problem is that Automake does *not* know the dependency graph of 
each object.  Within one Makefile, this is possible (and mostly 
supported) but most projects depend on SUBDIRS to recurse though 
subordinate Makefiles so there is no full dependency graph of each 
object.  The build is dependent on careful ordering by the developer 
rather than Makefile dependencies.

> If Automake generated an install target for installable product, just as it
> generated a build target, would that not solve this problem?  Like so:

It *should* do this for libraries built from within the Makefile, but 
currently it does not.  Instead it simply goes though the LTLIBRARIES 
list in each Makefile and installs in that order.

Bob
======================================
Bob Friesenhahn
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http://www.simplesystems.org/users/bfriesen