[Openquicktime-devel] Dynamic linking questions

[Ciaran W. <cia...@fr...>]

Hi all,

My knowledge of the intricacies of dynamic linking is limited, so I'd be
grateful if anyone could clear up a couple of questions (all this is on
linux).

I'm writing a plugin for another application, and my plugin in turn uses
OpenQuicktime.  When my plugin is loaded the linker breaks loading the
codecs; it can't find the oqt_allocate_video_codec function, which is in
libopenquicktime.so.

This doesn't happen in the executable->openquicktine->codec case, only
with executable->myplugin->openquicktime->codec.

So the problem is the dynamic linker won't search the libs my plugin was
linked against for linking the codec.  The workaround I found was to
compile the codecs with -lopenquicktime so they have a dependency on
openquicktime.so

Looking at the dlopen man page suggested linking with -rdynamic might
work, but it doesn't :(

Can anyone shed any light on this?  Or alternatively, how do I modify
the autoconf stuff so the codecs are built with -lopenquicktime?

Ciaran.