.travis.yml

dist: xenial  # Ubuntu version determines minimum GLIBC version required by AppImage
language: cpp

compiler:
  - g++
  - clang

git:
  depth: 10

os:
  - linux
  - osx

env:
  global:
  # versions of VTK for each OS
  # - On Ubuntu, use default version installed by apt-get
  # - On macOS, build recent VTK version from sources and cache installation
  - LINUX_VTK_VERSION=7.1.1
  - MACOS_VTK_VERSION=9.0  # Homebrew versions: 8.2, 9.0; otherwise build from sources
  - WITH_CCACHE=ON    # speed up MIRTK build itself using ccache
  - WITH_ARPACK=OFF   # requires time consuming build of gcc on macOS
  - WITH_UMFPACK=OFF  # ARPACK & UMFPACK dependencies come in pairs
  - WITH_TBB=ON       # build with TBB is always recommended
  - WITH_FLANN=ON     # build with FLANN is optional, but requires only little extra build time
  - WITH_FLTK=ON      # build with FLTK-based Viewer when WITH_VTK is turned ON
  - WITH_ITK=OFF      # required by ANTs N4 which is included in DrawEM package
                      # exclude DrawEM from Travis CI build for now, see https://github.com/MIRTK/DrawEM/pull/27
  # build and deployment of AppImage for Linux
  - AppImage_BUILD=${AppImage_BUILD:-ON}
  - AppImage_BRANCH=${AppImage_BRANCH:-master}
  - AppImage_DEVEL=${AppImage_DEVEL:-ON}
  - AppImage_LATEST=${AppImage_LATEST:-ON}
  - AppImage_RELEASE=${AppImage_RELEASE}
  jobs:
  - WITH_VTK=OFF      # make sure that MIRTK can be build fine without VTK
  - WITH_VTK=ON       # test build with all moduldes, including those using VTK

jobs:
  allow_failures:
    # the osx build often breaks with homebrew changes, so we allow it to fail 
    - os: osx
  exclude:
  # in order to reduce number of jobs to wait for, test only main compilers 
  # used on each OS
  - os: linux
    compiler: clang
  - os: osx
    compiler: g++
  # travis-ci.org has low capacity for macOS jobs, thus reduce number of 
  # macOS jobs to only the essential ones. With the following, we only need 
  # to wait for one macOS job.  
  # Because on macOS usually a very recent VTK version is installed with 
  # Homebrew, it is more interesting to build with VTK on macOS than on 
  # Ubuntu. When the GCC build without VTK on Ubuntu succeeds, chances 
  # are very high it also builts fine on macOS.
  - os: osx
    compiler: clang
    env: WITH_VTK=OFF

cache:
  ccache: true
  timeout: 1000
  directories:
  - "$HOME/VTK-$LINUX_VTK_VERSION"
  - "$HOME/VTK-$MACOS_VTK_VERSION"

before_install:
  - . Scripts/install_depends.sh  # sourcing will enable export of env variables
  - cd $TRAVIS_BUILD_DIR          # working directory may have been changed

install: true

script:
  - Scripts/travis.sh

after_success:
  - if [ "$AppImage_BUILD" = ON ] && [ "$TRAVIS_REPO_SLUG" = "BioMedIA/MIRTK" ] && [ "$TRAVIS_BRANCH" = "$AppImage_BRANCH" ] && [ "$TRAVIS_PULL_REQUEST" = false ] && [ "$TRAVIS_OS_NAME" = linux ] && [ "$WITH_VTK" = ON ]; then
      export AppImage_BINTRAY=ON;
    else
      export AppImage_BINTRAY=OFF;
    fi
  - if [ "$AppImage_BUILD" = ON ] && [ "$AppImage_BINTRAY" = ON -o -n "$TRAVIS_TAG" ]; then
      Scripts/make_appimage.sh;
    fi

before_deploy:
  - git tag -f travis-${TAG}-build
  - git remote add gh https://${OWNER}:${GITHUB_API_KEY}@github.com/${TRAVIS_REPO_SLUG}.git
  - git push gh :travis-${TAG}-build || true
  - git push -f gh travis-${TAG}-build
  - git remote remove gh

deploy:
  - provider: releases
    api-key: $GITHUB_API_KEY
    file: Deploy/*.AppImage
    file_glob: true
    skip_cleanup: true
    name: AppImage of MIRTK master HEAD deployed by Travis CI build
    body: Automatic MIRTK development build of $TRAVIS_BRANCH branch
      (commit $TRAVIS_COMMIT) built by Travis CI on $(date +'%F %T %Z').
    prerelease: true
    overwrite: true
    target_commitish: $TRAVIS_COMMIT
    on:
      condition: "$AppImage_BINTRAY = ON"
      all_branches: true
      tags: false

notifications:
  email: false