language: c
compiler: gcc
sudo: required

before_install:
  - export ALL_DEB=$(wget --quiet -O - ${KERNEL_URL}v${KVER}/ | grep -o 'href=".*"' | grep -m1 all | cut -d '"' -f 2)
  - export KVER_BUILD=$(echo $ALL_DEB | cut -d '_' -f 1 | cut -c15-)
  - wget ${KERNEL_URL}v${KVER}/$(wget --quiet -O - ${KERNEL_URL}v${KVER}/ | grep -o 'href=".*"' | grep headers | grep generic | grep -m1 amd64 | cut -d '"' -f 2)
  - wget ${KERNEL_URL}v${KVER}/$ALL_DEB
  - sudo apt-get update
  - sudo apt-get install -y dpkg  # to upgrade to dpkg >= 1.17.5ubuntu5.8, which fixes https://bugs.launchpad.net/ubuntu/+source/dpkg/+bug/1730627
  - sudo dpkg -i *.deb

script:
  - make CC=$COMPILER KVER=$KVER_BUILD-generic

env:
  global:
    - KERNEL_URL=http://kernel.ubuntu.com/~kernel-ppa/mainline/

matrix:
  include:
    - compiler: gcc
      addons:
        apt:
          sources:
            - ubuntu-toolchain-r-test
            - sourceline: 'ppa:ondrej/nginx-mainline'
          packages:
            - gcc-5
            - libelf-dev
            - libssl1.1
      env: COMPILER=gcc-5 KVER=4.20-rc1
    - compiler: gcc
      addons:
        apt:
          sources:
            - ubuntu-toolchain-r-test
            - sourceline: 'ppa:ondrej/nginx-mainline'
          packages:
            - gcc-6
            - libelf-dev
            - libssl1.1
      env: COMPILER=gcc-6 KVER=4.19.1
    - compiler: gcc
      addons:
        apt:
          sources:
            - ubuntu-toolchain-r-test
            - sourceline: 'ppa:ondrej/nginx-mainline'
          packages:
            - gcc-7
            - libelf-dev
            - libssl1.1
      env: COMPILER=gcc-7 KVER=4.19.1
    - compiler: gcc
      addons:
        apt:
          sources:
            - ubuntu-toolchain-r-test
          packages:
            - gcc-5
      env: COMPILER=gcc-5 KVER=4.4.97
    - compiler: gcc
      addons:
        apt:
          sources:
            - ubuntu-toolchain-r-test
          packages:
            - gcc-4.9
      env: COMPILER=gcc-4.9 KVER=3.16.50
    - compiler: gcc
      addons:
        apt:
          sources:
            - ubuntu-toolchain-r-test
          packages:
            - gcc-5
      env: COMPILER=gcc-5 KVER=3.14.79