From: Joe Van Dyk <joevandyk@...>
Date: 2005-09-27T07:20:39+09:00
Subject: Re: ruby-gnome2 querying of installed library versions

On 9/26/05, Joe Van Dyk <joevandyk@gmail.com> wrote:
> On 9/26/05, Joe Van Dyk <joevandyk@gmail.com> wrote:
> > Hi,
> >
> > Some of my applications that use ruby-gnome2 require a recent version
> > of the following libraries installed:
> >
> > libart_lgpl
> > libgnomecanvas
> > ruby-gnome2
> >
> > I'd like to be able to check to make sure that the necessary libraries
> > are installed before the GUI is loaded, and if they're not, then spit
> > out some message to the user and quit.
> >
> > So what are my options?
>
> Oh, btw, I know that it's possible to check the installed Gtk version
> via Gtk.check_version? but I've not been able to find options for
> libart, libgnomecanvas, and ruby-gnome2 (I need to check that the
> ruby-gnome2 libraries for the Art and Canvas have been compiled
> against the recent libraries and not the old ones).

Some searching found the PKGConfig module in the glib directory.  It's
a wrapper around the pkg-config command.  Very nice.

Now finally, how can I tell, for example, if ruby-gnome2 was compiled
against a recent version of libgnomecanvas?  I can tell, using the
PKGConfig module, that a recent version of libgnomecanvas is
installed, but I'm not sure yet how to tell that ruby-gnome2 was
compiled against it.