Error when enabling PythonQt_Wrap_Qtopengl on Mac 10.7.4 / XCode 4.3.3

[jcfr]

Message when qt's opengl is enabled.  Was forced on by 'all'

[25] PythonQt-build $ make -j10
Linking CXX shared library libPythonQt.dylib
Undefined symbols for architecture x86_64:
  "_glClearDepth", referenced from:
      QGLFunctions::glClearDepthf(float) in com_trolltech_qt_opengl0.cpp.o
  "_glDepthRange", referenced from:
      QGLFunctions::glDepthRangef(float, float) in
com_trolltech_qt_opengl0.cpp.o
ld: symbol(s) not found for architecture x86_64
clang: error: linker command failed with exit code 1 (use -v to see invocation)
make[2]: *** [libPythonQt.dylib] Error 1
make[1]: *** [CMakeFiles/PythonQt.dir/all] Error 2
make: *** [all] Error 2