PyCuAmpcor: add gdal lib to link

contrib/PyCuAmpcor/src/SConscript

@@ -39,6 +39,8 @@ def cythonPseudoBuilder(env, src, bld, inst):
 
     # Add the Numpy headers to the include path
     env.Append(CPPFLAGS = ['-I'+np_header_path])
+    libList = ['gdal']
+    env.PrependUnique(LIBS=libList)
     listFiles.append('PyCuAmpcor.so')
     env['STATIC_AND_SHARED_OBJECTS_ARE_THE_SAME'] = True
     lib = env.LoadableModule(target='PyCuAmpcor.abi3.so', source=listFiles, CPPDEFINES='GPU_ACC_ENABLED')