language: node_js
sudo: false
env:
  - CXX=g++-4.8
addons:
  apt:
    sources:
    - ubuntu-toolchain-r-test
    packages:
    - g++-4.8

node_js:
  - "6"

language: node_js
sudo: false
env:
  - CXX=g++-4.9
addons:
  apt:
    sources:
    - ubuntu-toolchain-r-test
    packages:
    - g++-4.9

node_js:
  - "6"

Use gcc 4.9 for CI
Use gcc 4.9 for CI
