Not buildable in yocto on Ubuntu 14.04

When I try to build this code via yocto on an Ubuntu14.04 pc. It gets the error:
| failed to import Cython: /home/oip/yocto/sta-phycore/sta_phycore/build/workspace/sources/pyv4l2/.eggs/Cython-0.25.2-py2.7-linux-x86_64.egg/Cython/Compiler/Scanning.so: wrong ELF class: ELFCLASS32
| error: Cython does not appear to be installed

I installed cython for python 2 and 3.
I have python 3.4 on the pc.