add script to build wheels packages

Packaging/Python/build_wheels.sh

+#!/bin/bash
+set -e -x
+
+VILLAS_VERSION=0.8.0
+
+# Set up DPsim dependencies
+curl https://packages.fein-aachen.org/redhat/fein.repo > /etc/yum.repos.d/fein.repo
+
+# Enable Extra Packages for Enterprise Linux (EPEL) repo
+yum -y install epel-release
+
+# Toolchain
+yum -y install \
+	devtoolset-7-toolchain \
+	pkgconfig make cmake3 \
+	git tar \
+	expat-devel \
+	graphviz-devel \
+	sundials-devel \
+	gsl-devel \
+    libxml2-devel \
+	# libvillas-devel-${VILLAS_VERSION} \
+	# villas-node-${VILLAS_VERSION}
+
+# rm -rf spdlog
+# git clone --recursive https://github.com/gabime/spdlog.git
+# mkdir -p spdlog/build
+# pushd spdlog/build
+# cmake ..
+# make -j$(nproc) install
+# popd
+
+# Make cmake3 the default
+update-alternatives --install /usr/bin/cmake cmake /usr/bin/cmake3 1
+
+# Compile wheels
+for PYDIR in /opt/python/{cp35,cp36,cp37}-*; do
+	LIB=(${PYDIR}/lib/python*)
+	INC=(${PYDIR}/include/python*)
+	EXC=${PYDIR}/bin/python3
+    
+	export CMAKE_OPTS="-DWITH_EIGEN_SUBMODULE=ON \
+					   -DWITH_CIM_SUBMODULE=ON \
+					   -DPYTHON_EXECUTABLE=${EXC} \
+					   -DPYTHON_INCLUDE_DIR=${INC} \
+					   -DPYTHON_LIBRARY=${LIB}"
+
+    "${PYDIR}/bin/pip" install -r /dpsim/requirements.txt
+    "${PYDIR}/bin/pip" wheel /dpsim/ -w wheelhouse/
+done
+
+# Bundle external shared libraries into the wheels
+for whl in wheelhouse/*.whl; do
+    auditwheel repair "$whl" --plat $PLAT -w /dpsim/
+done
+
+# Install packages and test
+for PYDIR in /opt/python/{cp35,cp36,cp37}-*; do
+    "${PYDIR}/bin/pip" install python-manylinux-demo --no-index -f /io/wheelhouse
+    (cd "$HOME"; "${PYDIR}/bin/nosetests" pymanylinuxdemo)
+done
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