message: Travis: Install gcc 7 on Ubuntu 16.04
diff: @@ -47,8 +47,10 @@ dist: xenial
  my_tag: &my_tag
  stage: test
  before_install:
  + # Repository is required for gcc 7.
  + - sudo add-apt-repository -y ppa:ubuntu-toolchain-r/test
  - sudo apt-get update
  - - sudo apt-get install -y libc6-dev-i386 g++-multilib lib32stdc++6
  + - sudo apt-get install -y libc6-dev-i386 g++-multilib lib32stdc++6 gcc-7 g++-7
  - if [ -n "$WASM_FLAGS" ]; then source scripts/install_emscripten.sh && emcc --version; fi
  - if [ -n "$WASM_FLAGS" ]; then source scripts/install_v8.sh && v8 -e "console.log(\"V8 WORKS\")"; fi
  - wget https://cmake.org/files/v3.17/cmake-3.17.3-Linux-x86_64.sh && mkdir /opt/cmake && sh cmake-3.17.3-Linux-x86_64.sh --prefix=/opt/cmake --skip-license && sudo ln -s /opt/cmake/bin/cmake /usr/local/bin/cmake && rm cmake-3.17.3-Linux-x86_64.sh
  