I am trying to build python from source in a Docker container. The error I'm getting is:
"This platform's pyconfig.h needs to define PY_FORMAT_LONG_LONG" (more info below)
My question is : How does one properly set the PY_FORMAT_LONG_LONG in the build configuration ?. Which environment variable, compiler flags need to be set ? And of course, which is the right part of the fine manual to read ? 
These builds were working fine in a a VM, and are now failing various base images (CEntOS6/7, Ubuntu 14.04/16.10).
Full error at e.g. https://ci.sagrid.ac.za/job/python-deploy/39/ARCH=x86_64,GCC_VERSION=4.9.4,NAME=python,OS=centos6,SITE=generic,VERSION=2.7.13/console)
The configuration for the build is at e.g. https://github.com/SouthAfricaDigitalScience/python-deploy/blob/master/build-2.7.13.sh
docker pull quay.io/aaroc/code-rade-build-containers-build-slave:ubuntu1610