[vtkusers] Cxx_examples?

[Karshi]

Hi ,

 I can't Cxx examples to compile.  How do I fix the problem?
Thanks
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bash-2.05$ ./configure
loading cache ./config.cache
creating ./config.status
creating Makefile
bash-2.05$ make
c++  -g -O2 -fPIC -I.   -I. -I/usr/X11R6/include  -I./../../common 
-I./../../common/examplesCxx  -I./.. -I../../common  -I./../../imaging -c 
VisQuad.cxx -o VisQuad.o
c++ -o VisQuad  -g -O2 -fPIC -I.   -I. -I/usr/X11R6/include  -I./../../common 
-I./../../common/examplesCxx  -I./.. -I../../common  -I./../../imaging 
VisQuad.o  ../../imaging/libVTKImaging.so ../../graphics/libVTKGraphics.so 
../../common/libVTKCommon.so ../../imaging/libVTKImaging.so 
../../graphics/libVTKGraphics.so ../../common/libVTKCommon.so 
-L/usr/X11R6/lib -L/usr/X11R6/lib -lGL    -L/usr/X11R6/lib -lXext -lXt -lSM 
-lICE -lX11
-lm
/usr/X11R6/lib/libGL.so: undefined reference to `pthread_getspecific'
/usr/X11R6/lib/libGL.so: undefined reference to `pthread_key_create'
/usr/X11R6/lib/libGL.so: undefined reference to `pthread_setspecific'
*** Error code 1
 
Stop in /home/khasanov/Python/vtk/graphics/examplesCxx.
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