Re: Integrating libtool head into GraphicsMagick

[Bob Friesenhahn]

On Tue, 6 Dec 2005, Ralf Wildenhues wrote:
> > > > So I am at a loss as to why Automake fails to build ltdl/libltdlc.la
> > > > before attempting to use it.
> > >
> > > FYI, a quick fix to the build-order problem is
> > >
> > >   # Convince libltdl to be built before the library which needs it.
> > >   $(LIBMAGICK): $(LIBLTDL)
> > >
> > > but this feels wrong to me.  Automake should already know about this
> > > dependency.
>
> This problem existed before.  It may just have been hidden by the
> default order in which the libraries were built -- I bet a parallel make
> would've exposed it.

Previously $(LIBLTDL) was listed in lib_LTLIBRARIES and no-where else. 
This must have helped since 'gmake -j' never caused a failure.

> I think you have to bite the apple and specify the library dependencies
> manually:
>
> in magick/Makefile.am, do this outside of any other Automake
> conditionals:
>
> if CONVENIENCE_LTDL
> magick_libGraphicsMagick_la_DEPENDENCIES = $(LIBLTDL)
> endif

Testing now ...

> This is not nice, but it has the advantage of not being a hack, and
> should make parallel build work.

I am testing the new hack now ... :-)

We will need to document such shortcomings/workarounds for libtool 
users.

Bob
======================================
Bob Friesenhahn
address@hidden, http://www.simplesystems.org/users/bfriesen/
GraphicsMagick Maintainer,    http://www.GraphicsMagick.org/