On Wed, Feb 24, 2010 at 03:13:52PM +0100, Diego Elio “Flameeyes” Pettenò wrote:
Il giorno mer, 24/02/2010 alle 15.05 +0100, Jim Meyering ha scritto:
That sounds reasonable, if we're guaranteed always to have a libdl. However, the fact that it's not needed on F12 suggests that we should be adding it only when necessary (hence a configure-time test).
I guess the problem might lie in the way the VirtualBox driver's dependencies are linked; didn't FC13/Rawhide move to use --no-add-needed by default?
If that's the case you have two options:
- a bug in the VirtualBox driver's dependencies, that causes some of the libraries not to link to libdl; - the VirtualBox driver *does* need libdl, but never linked it in by itself as it relied on the --add-needed behaviour.
Easy way to test this is to try configuring on Rawhide with LDFLAGS="-Wl,--add-needed" and see what happens… if it builds fine, it's the latter.
On the other hand, you do have one problem: libdl is only present in glibc/uclibc, as other C libraries have it part of the base library, so I'd suggest adding a configure test.
If Richard can confirm whether it's the case, I should be able to write one fairly quickly, I hope, as I have something similar laying around.
The command: make LDFLAGS="-Wl,--add-needed" does fix the issue for me. Rich. -- Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones Read my programming blog: http://rwmj.wordpress.com Fedora now supports 80 OCaml packages (the OPEN alternative to F#) http://cocan.org/getting_started_with_ocaml_on_red_hat_and_fedora