language: rust
rust: stable
dist: xenial
sudo: false
notifications:
  email: disabled

cache: cargo

install:
  - if [ -z "$NO_ADD" ]; then rustup target add "$TARGET"; fi

script:
  - cargo build --verbose --target "$TARGET"
  # Only run the targets if we are on the same OS.
  - if [ "$RUN" == "1" ]; then cargo test --verbose --target "$TARGET"; fi

env:
  global:
    # Travis CI servers make 2 cores available to processes via virtualization.
    # See https://docs.travis-ci.com/user/reference/overview/
    - NUM_CPUS_TEST_GET=2

matrix:
  include:
    # Linux
    # Minimum Supported Rust Version
    - name: Minimum Supported Rust Version
      env: TARGET=x86_64-unknown-linux-gnu RUN=1 NO_ADD=1
      rust: 1.13.0
    # 32-bit requires multilib.
    - env: TARGET=i686-unknown-linux-gnu RUN=1
      addons:
        apt:
          packages:
            - gcc-multilib
    # 64-bit stable.
    - env: TARGET=x86_64-unknown-linux-gnu RUN=1 NO_ADD=1
      rust: stable
    # 64-bit beta.
    - env: TARGET=x86_64-unknown-linux-gnu RUN=1 NO_ADD=1
      rust: beta
    # 64-bit nightly.
    - env: TARGET=x86_64-unknown-linux-gnu RUN=1 NO_ADD=1
      rust: nightly

    # Mac OS X
    - os: osx
      env: TARGET=x86_64-apple-darwin RUN=1 NO_ADD=1
    # Android
    # - for x86
    - env: TARGET=i686-linux-android
    - env: TARGET=x86_64-linux-android
    # - for ARM
    - env: TARGET=arm-linux-androideabi
    - env: TARGET=aarch64-linux-android
    # IOS
    - os: osx
      osx_image: xcode9
      env: TARGET=x86_64-apple-ios
    # FreeBSD
    - env: TARGET=x86_64-unknown-freebsd
    # Fuchsia
    # FIXME: figure out why target is missing and re-enable
    #- env: TARGET=x86_64-unknown-fuchsia
    # NetBSD
    - env: TARGET=x86_64-unknown-netbsd
    # Emscripten
    - env: TARGET=asmjs-unknown-emscripten

    # CGroups in Docker
    - name: Docker CGroups
      install:
      script:
      - docker build -f ci/cgroups/Dockerfile -t num-cpus-cgroups .
      # Test without cgroups
      - docker run -it -e NUM_CPUS_TEST_GET=2 num-cpus-cgroups
      # Only 1 CPU
      - docker run -it --cpus="1" -e NUM_CPUS_TEST_GET=1 num-cpus-cgroups
      # 1.5 CPUs
      - docker run -it --cpus="1.5" -e NUM_CPUS_TEST_GET=2 num-cpus-cgroups