This prevents people building only the python library against a system installed version of the cpp library.
While the master is different to the released version, it still has the same version, therefore the version check in the python library on the cpp library doesn't work.
This prevents people building only the python library against a system installed version of the cpp library.
While the master is different to the released version, it still has the same version, therefore the version check in the python library on the cpp library doesn't work.
Example #447