# Build matrix / environment variables are explained on:
# http://about.travis-ci.org/docs/user/build-configuration/
# This file can be validated on: http://lint.travis-ci.org/

dist: xenial
language: cpp

compiler:
  - gcc
  - clang
os:
  - linux
  - osx

env:
  - BUILD_TYPE=Debug CPU_LEVEL=AVX
  - BUILD_TYPE=Debug CPU_LEVEL=AVX2
  - BUILD_TYPE=RelWithDebInfo CPU_LEVEL=AVX
  - BUILD_TYPE=RelWithDebInfo CPU_LEVEL=AVX2

matrix:
  exclude:
    # GCC fails on recent Travis OSX images.
    # https://github.com/travis-ci/travis-ci/issues/9640
    - compiler: gcc
      os: osx
    # Travis OSX servers seem to run on pre-Haswell CPUs. Attempting to use AVX2
    # results in crashes.
    - env: BUILD_TYPE=Debug CPU_LEVEL=AVX2
      os: osx
    - env: BUILD_TYPE=RelWithDebInfo CPU_LEVEL=AVX2
      os: osx

addons:
  apt:
    # List of whitelisted in travis packages for ubuntu-trusty can be found here:
    #   https://github.com/travis-ci/apt-package-whitelist/blob/master/ubuntu-trusty
    # List of whitelisted in travis apt-sources:
    #   https://github.com/travis-ci/apt-source-whitelist/blob/master/ubuntu.json
    sources:
    - llvm-toolchain-xenial-7
    - ubuntu-toolchain-r-test
    packages:
    - clang-7
    - cmake
    - gcc-8
    - g++-8
    - ninja-build
  homebrew:
    packages:
    - cmake
    - gcc@8
    - ninja

before_install:
# The Travis VM image for Mac already has a link at /usr/local/include/c++,
# causing Homebrew's gcc installation to error out. This was reported to
# Homebrew maintainers at https://github.com/Homebrew/brew/issues/1742 and
# removing the link emerged as a workaround.
- if [ "$TRAVIS_OS_NAME" == "osx" ]; then rm -f /usr/local/include/c++ ; fi

install:
# /usr/bin/gcc is stuck to old versions on both Linux and OSX.
- if [ "$CXX" = "g++" ]; then export CXX="g++-8" CC="gcc-8"; fi
- echo ${CC}
- echo ${CXX}
- ${CXX} --version
- cmake --version

before_script:
- mkdir -p build && cd build
- cmake .. -G Ninja -DCMAKE_BUILD_TYPE=$BUILD_TYPE
    -DSNAPPY_REQUIRE_${CPU_LEVEL}=ON
- cmake --build .
- cd ..

script:
- build/snappy_unittest
