Add git clone pybind11 to wheel build script and additonal script to build pure python wheel

Author: tlestang

build-pure-wheel.sh

@@ -0,0 +1,23 @@
+#!/bin/bash
+
+# This is script is to run inside a manylinux
+# docker image, i.e.
+# docker run -v `pwd`:/io quay.io/pypa/manylinux2014_x86_64 /io/build-wheel.sh
+#
+# Builds a pure python PyBaMM wheel, that is without the idaklu module extension.
+# In the following, clining the pybind11 is omitted, resulting in the extension module
+# compilation to be skipped.
+# This pure python wheel is mostly intended to Windows support.
+
+set -e -x
+cd /io
+
+# Build wheel!
+# Using python 3.7 but the resulting wheel is not
+# python version dependent
+for PYBIN in /opt/python/cp37-cp37m/bin; do
+    "${PYBIN}/python" setup.py bdist_wheel -d /io/wheelhouse
+done
+
+echo "** --- All good ! --- **"
+ls /io/wheelhouse

build-wheel.sh

@@ -19,6 +19,14 @@ ln -s /opt/python/cp37-cp37m/bin/cmake /usr/bin/cmake
 # https://pypi.org/project/wget/
 /opt/python/cp37-cp37m/bin/pip install wget
 
+# Clone the pybind11 git repo next to the setup.py
+# Required to build the idaklu extension module.
+if [ ! -d "pybind11" ]
+then
+  git clone https://github.com/pybind/pybind11.git
+fi
+
+
 # Download and build SuiteSparse/Sundials
 # in KLU_module_deps/
 /opt/python/cp37-cp37m/bin/python scripts/setup_KLU_module_build.py