Am Freitag, den 13.01.2012, 15:17 +0100 schrieb Philippe Veber: > > > 2012/1/13 Gerd Stolpmann <i...@gerd-stolpmann.de> > Am Freitag, den 13.01.2012, 14:18 +0100 schrieb Stéphane > Glondu: > > Le 13/01/2012 12:59, Philippe Veber a écrit : > > > Debian and Ubuntu have not so recently switched to > multiarch binaries > > > (including libs, see > http://wiki.debian.org/Multiarch/Implementation). > > > This is an important change for ocaml C bindings since the > libraries are > > > now to be found in /usr/lib/<arch description> instead > of /usr/lib. I > > > was just bitten by this, when realizing that the ocaml > configure script > > > couldn't find libX11.so and wouldn't install graphics. A > similar problem > > > was handled by the people in charge of debian ocaml > packages > > > (http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=619344). > Now my > > > question is the following: will this evolution be a > problem for GODI/odb > > > packages (and more generally source distribution), and > what is the > > > advised fix for it? > > > > My advice would be to rely on pkg-config (a kind of > ocamlfind for C > > libraries), or similar scripts (pcre-config, etc.) provided > by the > > libraries. Otherwise, there is no good, portable (I mean, > not > > Debian-specific) way to guess where a library is, and the > packager will > > give an explicit path in his call to the configure script in > > debian/rules. By the way, this is what we did for ocaml [1]. > > > > [1] > > > > http://anonscm.debian.org/gitweb/?p=pkg-ocaml-maint/packages/ocaml.git;a=commitdiff;h=1db9b654b7d8b702cddb44df5aea1982f3120883 > > > In GODI there is a library searcher for libs that do not > support > pkg-config et al. It just tries a list of typical paths used > by various > OS. The method works well if the library is not dependent on > other > libraries, and is quite portable. Of course, you cannot be > sure to find > the right library if several versions are installed (which is > quite > common on non-open-source OS where the developer has to do it > on its > own), but otherwise it is good enough for setting a default if > the user > does not have special wishes. > > So, e.g. for X11, there is no pkg-config, and GODI falls back > to > searching. Btw, we don't rely here on what the Ocaml configure > script > finds out, but have our own searcher, simply because this > makes it > easier to respect users' wishes. > 'seems like pkg-config was updated: > > pveber@gesundheit:~/usr/src/ocaml-3.12.1$ pkg-config --libs x11 > -lX11
Traditionally, X11 came with its own system called imake, which is a preprocessor for makefiles. If there is now pkg-config support, this is very new, or an extension by the distributor. Gerd -- ------------------------------------------------------------ Gerd Stolpmann, Darmstadt, Germany g...@gerd-stolpmann.de Creator of GODI and camlcity.org. Contact details: http://www.camlcity.org/contact.html Company homepage: http://www.gerd-stolpmann.de *** Searching for new projects! Need consulting for system *** programming in Ocaml? Gerd Stolpmann can help you. ------------------------------------------------------------ -- Caml-list mailing list. Subscription management and archives: https://sympa-roc.inria.fr/wws/info/caml-list Beginner's list: http://groups.yahoo.com/group/ocaml_beginners Bug reports: http://caml.inria.fr/bin/caml-bugs
