On 12/03/2011 06:32 AM, Raf Berkvens wrote:
I've made a 32-bit virtual Ubuntu 11.10 machine and followed the same steps.
I just ran into exactly the same error as I've mentioned here previously:

Running: $ LD_PRELOAD=/usr/local/lib/stageplugin.so player simple.cfg 
Returns: player: symbol lookup error: /usr/local/lib/libstage.so.4.0.0:
undefined symbol: _ZTI12Fl_Gl_Window

I can't be the only having this issue, can I? 

Nope.  The fix was identified the other day, more details at http://old.nabble.com/player-can%27t-find-stageplugin.so-td32902274.html  Basically, you need to use target_link_libraries to link FLTK to stage; passing the LDFLAGS seems to not work on Ubuntu 11.10.