.travis.yml: Add node.js versions to build matrix

This adds node5, node4 & 0.12 to build matrix and updates clang & gcc if
required (node4/5)

Signed-off-by: Brendan Le Foll <brendan.le.foll@intel.com>

.travis.yml

@@ -1,8 +1,12 @@
 language: cpp
-compiler:
-  - gcc
-  - clang
+env:
+  - CC=gcc CXX=gcc
+  - CC=clang CXX=clang++
+  - NODE4=true
+  - NODE5=true
+  - NODE012=true
 install:
+  - if [ "${NODE4}" ]; then export CC=gcc-4.8 CXX=g++-4.8; fi
   - sudo add-apt-repository --yes ppa:kalakris/cmake
   - sudo add-apt-repository --yes ppa:fenics-packages/fenics-exp/swig
   - sudo apt-get update -qq
@@ -10,7 +14,19 @@ install:
   - sudo ln -s /usr/bin/swig3.0 /usr/bin/swig
   - sudo update-java-alternatives -s java-8-oracle
 before_script:
+  - export NODE_ROOT_DIR="/home/travis/.nvm/v0.10.36/include"
   - if [ "$CC" = "gcc" ]; then export BUILDJAVA=ON; else export BUILDJAVA=OFF; fi
   - export JAVA_HOME=/usr/lib/jvm/java-8-oracle
+  - if [ "${NODE4}" ]; then nvm install 4.1; export CC=gcc-4.8; export CXX=g++-4.8; export NODE_ROOT_DIR="/home/travis/.nvm/versions/node/`nvm version`/include"; fi
+  - if [ "${NODE5}" ]; then nvm install 5; export CC=gcc-4.8; export CXX=g++-4.8; export NODE_ROOT_DIR="/home/travis/.nvm/versions/node/`nvm version`/include"; fi
+  - if [ "${NODE012}" ]; then nvm install 0.12; export NODE_ROOT_DIR="/home/travis/.nvm/versions/node/`nvm version`/include"; fi
 script:
-  - mkdir build && cd build && cmake -DBUILDSWIGJAVA=$BUILDJAVA -DNODE_ROOT_DIR:PATH=/home/travis/.nvm/v0.10.36/include .. && make && make test
+  - mkdir build && cd build && cmake -DBUILDSWIGJAVA=$BUILDJAVA -DNODE_ROOT_DIR:PATH="${NODE_ROOT_DIR}" .. && make && make test
+addons:
+  apt:
+    sources:
+      - llvm-toolchain-precise-3.6
+      - ubuntu-toolchain-r-test
+    packages:
+      - clang-3.6
+      - g++-4.8