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.
--
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