.travis.yml

language: c
os: linux
dist: trusty
compiler: gcc

env:
  global:
    - KERNEL_GIT="https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"

matrix:
  include:
    # Older version of the kernel
#    - name: "Kernel 2.6.13"
#      env: KERNEL_BRANCH="v2.6.13" GCC_VER="gcc-4.9"
#      addons:
#        apt:
#          packages:
#            - gcc-4.9
#          sources:
#            - ubuntu-toolchain-r-test

    - name: "Kernel 2.6.32"
      env: KERNEL_BRANCH="v2.6.32" GCC_VER="gcc-4.9"
      addons:
        apt:
          packages:
            - gcc-4.9
          sources:
            - ubuntu-toolchain-r-test

    - name: "Kernel 3.10.0"
      env: KERNEL_BRANCH="v3.10" GCC_VER="gcc-4.9"
      addons:
        apt:
          packages:
            - gcc-4.9
          sources:
            - ubuntu-toolchain-r-test

    # Here are actively supported kernel
    - name: "Kernel 3.16.y LTS"
      env: KERNEL_BRANCH="linux-3.16.y" GCC_VER="gcc-5"
      addons:
        apt:
          packages:
            - gcc-5
          sources:
            - ubuntu-toolchain-r-test

    - name: "Kernel 4.4.y LTS"
      env: KERNEL_BRANCH="linux-4.4.y" GCC_VER="gcc-5"
      addons:
        apt:
          packages:
            - gcc-5
          sources:
            - ubuntu-toolchain-r-test

    - name: "Kernel 4.9.y LTS"
      env: KERNEL_BRANCH="linux-4.9.y" GCC_VER="gcc-6"
      addons:
        apt:
          packages:
            - gcc-6
          sources:
            - ubuntu-toolchain-r-test

    - name: "Kernel 4.14.y LTS"
      env: KERNEL_BRANCH="linux-4.14.y" GCC_VER="gcc-7"
      addons:
        apt:
          packages:
            - libelf-dev
            - gcc-7
          sources:
            - ubuntu-toolchain-r-test

    - name: "Kernel 4.19.y LTS"
      env: KERNEL_BRANCH="linux-4.19.y" GCC_VER="gcc-7"
      addons:
        apt:
          packages:
            - libelf-dev
            - gcc-7
          sources:
            - ubuntu-toolchain-r-test

    - name: "Kernel 5.4.y LTS"
      env: KERNEL_BRANCH="linux-5.4.y" GCC_VER="gcc-8"
      addons:
        apt:
          packages:
            - libelf-dev
            - gcc-8
          sources:
            - ubuntu-toolchain-r-test

    # Stable versions
    - name: "Kernel 5.7.y STABLE"
      env: KERNEL_BRANCH="linux-5.7.y" GCC_VER="gcc-8"
      addons:
        apt:
          packages:
            - libelf-dev
            - gcc-8
          sources:
            - ubuntu-toolchain-r-test

    - name: "Kernel 5.8.y STABLE"
      env: KERNEL_BRANCH="linux-5.8.y" GCC_VER="gcc-8"
      addons:
        apt:
          packages:
            - libelf-dev
            - gcc-8
          sources:
            - ubuntu-toolchain-r-test
  allow_failures:
    - name: "Kernel 5.8.y STABLE"


# Here checkout kernels
before_script:
  - eval "export CC=${GCC_VER}"
  - eval "${CC} --version"
  - git clone ${KERNEL_GIT} --depth=1 --branch=${KERNEL_BRANCH} ${KERNEL_BRANCH}
  - pushd .
  - cd $KERNEL_BRANCH
  - yes "" | make oldconfig CC=${GCC_VER}
  - make prepare CC=${GCC_VER}
  - make scripts CC=${GCC_VER}
  - popd

# Now build with kernel sources
script:
  - make KDIR=${PWD}/${KERNEL_BRANCH} CC=${GCC_VER}

# Not sure if I should cache the kernel source tree...
#cache:
#  directories:
#    - '$HOME/.sonar/cache'