travis.yml: Add job to build tulip-python wheel on manylinux1

.travis.yml

@@ -21,6 +21,32 @@ notifications:
 # define build jobs
 jobs:
   include:
+  #==============================================================================================================================================================
+    # Tulip-Python wheels build on manylinux1
+    - stage: Tulip-Python wheels build (CentOS 5.11 manylinux1)
+      os: linux
+      dist: trusty
+      cache:
+        directories:
+          - $HOME/ccache
+
+      sudo: required
+      env:
+        - ARCH=x86_64
+        - DOCKER_IMAGE=quay.io/pypa/manylinux1_x86_64
+
+      services:
+        - docker
+
+      before_install:
+        - echo 'DOCKER_OPTS="-H tcp://127.0.0.1:2375 -H unix:///var/run/docker.sock -s devicemapper"' | sudo tee /etc/default/docker > /dev/null
+        - sudo service docker restart
+        - sleep 5
+        - sudo docker pull ${DOCKER_IMAGE}
+        - sudo docker create -v $HOME/ccache:/ccache --name ccache ${DOCKER_IMAGE}
+
+      script:
+        - sudo docker run --rm=true -e CCACHE_DIR=/ccache --volumes-from ccache --cap-add SYS_ADMIN -v `pwd`:/tulip:rw ${DOCKER_IMAGE} /bin/bash -c "bash -xe /tulip/bundlers/linux/tulip_python_wheels_build.sh"
   #==============================================================================================================================================================
     # Tulip core build stage on Linux
     - stage: Tulip core build (Linux)

bundlers/linux/tulip_python_wheels_build.sh

@@ -0,0 +1,34 @@
+#!/bin/bash
+
+# This script is only intended to be run in the pypa/manylinux1
+# docker image based on Centos 5.11
+
+cd
+
+# install tulip-python wheel deps
+yum -y install zlib-devel qhull-devel ccache
+
+# we need at least CMake 2.8.12 in order to build tulip-python wheel
+# so let's grab it, compile it and install it
+curl -LO https://cmake.org/files/v2.8/cmake-2.8.12.tar.gz
+tar -xvzf cmake-2.8.12.tar.gz
+cd cmake-2.8.12
+./bootstrap --enable-ccache
+make -j4
+make -j4 install
+
+cd
+
+mkdir tulip_build && cd tulip_build
+# iterate on available Python versions
+for PYTHON_BIN_PATH in /opt/python/cp*/bin
+do
+  # configure and build tulip-python with specific Python version
+  cmake -DTULIP_USE_CCACHE=ON -DTULIP_ACTIVATE_PYTHON_WHEEL_TARGET=ON -DPYTHON_EXECUTABLE=$PYTHON_BIN_PATH/python -DCMAKE_BUILD_TYPE=Release /tulip
+  make -j4 wheel
+  # install and check that the produced module can be successfully imported
+  cd ./library/tulip-python/bindings/tulip-core/tulip_module/dist
+  $PYTHON_BIN_PATH/pip install $(ls -t | head -1)
+  $PYTHON_BIN_PATH/python -c "import tulip"
+  cd && cd tulip_build
+done