On Sun, Jan 11, 2004 at 06:27:38PM +0100, Stefano Zacchiroli wrote: > Gerd released a fixed findlib (1.0.2), I've just upload the package. > > This version of findlib ships two new features that are of interest for > debian: > > 1) subpackages, i.e. the possibility to define arbitrarly nested findlib > packages in the same META file. Subpackages are accessed via dot > notation (e.g. "p1.p2.p3") > > 2) additions, i.e. the possibility to append values to a findlib > variable inside a META file (e.g. 'archive += "foo.cma"') > > Used together these two features permit us to minimize the number of > predicates in the META files we distribute. Predicates are indeed good > only to express conditions that are global for the compilation process > (e.g. byte/native, multi-threaded/single-threaded, ...), but are bad(TM) > to express per package conditions as we used it in lablgtk for example > (predicates: "init", "gnome", ...). Used in this way predicates soon or > later will clash. > > I attach three shining new META for lablgtk, lablgtk2 and lablgl. Using > them, to link a source file which uses gtkgl and need gtk intialization > one will simply do: > > ocamlfind ocamlc -linkpkg -package "lablgtk2.gtkgl lablgtk2.init" foo.ml > > Another advantage is in the writing of META files themselves, now we > could add as many subpackages as we wish (if needed :) avoiding > exponential explosion of the META file in the number of predicates. > > If nobody complains I'm here asking Sven to update the corresponding > debian packages so that they include these METAs. I've done some test on > them, but some more will be appreciated. > > Cheers. > > PS the new META for lablgtk2 will also add support for gnomecanvas and > rsvg which is missing in the META currently in unstable >
Hello, This functionality is indeed very interessant... Thanks for the example. Regard Sylvain LE GALL
