[vdr] Linking plugins against shared libs

Stefan Lucke stefan at lucke.in-berlin.de
Sat Apr 29 18:05:29 CEST 2006

On Samstag 29 April 2006 17:46, Laz wrote:
> This isn't exactly a vdr question but hopefully someone can give me an answer 
> here!
> I'm in the process of trying to add hardware MPEG decoding to the softdevice 
> plugin. I have just built a shared library which does the decoding. I can 
> link a test application against this and call functions from the library with 
> no problems. However, when I link the softdevice plugin against my library, 
> it links with no errors but I get an "undefined symbol" error when I try to 
> run vdr and it trys to load the plugin!
> This is the first time I've had the need to build a shared library in this way 
> so I'm a bit confused as to what's wrong here! My library is being linked 
> with "-Wl,-soname,libcle266decode.so.0.1 -o libcle266decode.so.0.1", and I've 
> added the relevant -I, -l, and -L to the plugin makefile so that it finds it.
> "ldd libvdr-softdevice.so.1.3.47" shows that it is finding my library and 
> "strings libcle266decode.so.0.1" shows the symbol for the function which is 
> being called.
> This must be something really basic that I'm missing here...

Did you build softdevice with sub-plugins enabled ?
What is your exact commandline when calling vdr etc. ?

Stefan Lucke

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