OSError: ./libopenscad.so: undefined symbol: gluTessBeginContour

[jfhbrook]

I get this error when trying to run the example. This is after running ./build.sh && make.

josh@onix:~/dev/pyscad$ python example001.py 
Traceback (most recent call last):
  File "example001.py", line 1, in <module>
    from pyscad import sphere, cylinder, rotate
  File "/home/josh/dev/pyscad/pyscad.py", line 2, in <module>
    _openscad=ctypes.cdll.LoadLibrary('./libopenscad.so')
  File "/usr/lib/python2.7/ctypes/__init__.py", line 443, in LoadLibrary
    return self._dlltype(name)
  File "/usr/lib/python2.7/ctypes/__init__.py", line 365, in __init__
    self._handle = _dlopen(self._name, mode)
OSError: ./libopenscad.so: undefined symbol: gluTessBeginContour