Re: dependency_libs?

[Bob Friesenhahn]

On Sun, 30 Apr 2006, Russ Allbery wrote:
> > # Libraries that this one depends upon.
> > dependency_libs=' /home/andreas/src/MakeHuman/cvs/animorph/src/libanimorph.la
> > -l glut -lGLU -lGL -lpng
>
> I expect that one of glut, GLU, and GL depend on the X libraries, and
> hence when libtool resolves transitive dependencies through the .la files,
> it pulls in the other libraries.
>
> This is one of the problems with .la files currently.  It doesn't have the
> correct semantics to distinguish between static builds (and builds on
> platforms with deficient shared library handling) where all transitive
> dependencies have to be pulled into the link line and shared builds on
> modern platforms where transitive dependencies do not have to be pulled in
> and in fact generally *shouldn't* since they make library migrations
> harder.

In this particular case, it would not matter much if libtool simply 
applied the X11 libraries out of spite due to it knowing that GLUT 
depends on X11, or if the OS applied the libraries due to transitive 
dependencies.  The result still does not work unless the X11 libraries 
are involved.

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