[pkg-synfig-devel] Re: Bug#358242: synfig strace

[Fabian Fagerholm]

On Wed, 2006-03-22 at 16:40 +0800, Paul Wise wrote:
> Any ideas about how to fix this? Moving the symlinks into the library
> package violates policy IIRC. I suppose we would have to make it look
> for the proper sonames?

Yes, that seems to be right. The big question is what "it" is in this
case. Some quick analysis:

src/synfig/module.cpp seems to be the place where those .so's are being
dlopen()ed. More specifically, lines 116 and 117 in that file calls
libltdl's lt_dlopenext() function, trying two different names for
the .so's: one with a "lib" prefix, one without.

I tried finding out how libltdl chooses the name. This is how it works:
if the specified filename can be found, it is used. Else, if there is
a .la file available in the search path, it is used to find the library.
Otherwise, libltdl will open <library>.so. If that doesn't succeed, it
fails.

An approach would be to figure out the soversion of the library at
build-time and use a macro (or equivalent) in the code to try opening
the library with the soname in the filename. But this might be a very
stupid idea -- I don't know enough about this to be able to tell.
Perhaps upstream has enough knowledge to comment?

-- 
Fabian Fagerholm <fabbe at paniq.net>
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