language: c++
compiler:
  - gcc

git:
  # It takes a while to clone our submodules, so we'd like to use --jobs to
  # speed it up. Here we prevent travis from using git clone --recursive, so
  # below in before_install we can manually update including --jobs.
  submodules: false
  depth: 10

cache:
  ccache: true
  directories:
    - .git/modules/

addons:
  # Unfortunately, the version of git we get by default is too low to support
  # --jobs on subdmodule, so update git before pulling in the submodules.
  apt:
    sources:
      - git-core
    packages:
      - git

before_install:
  # git.apache.org is the canonical repo but throttles network connections.
  # using github.com seems to reduce network errors a lot.
  - git config --global url.https://github.com/apache/.insteadOf https://git.apache.org/
  - git submodule update --init --recursive --jobs=2
env:
  global:
    - MAKEFLAGS=-j3
    - PATH="/usr/lib/ccache/:$PATH"
  matrix:
    - BIT_FLAG=
    # This would do another build for 32-bit, but we're already borderline
    # too slow on faster 64-bit, so skip this for now.
    # - BIT_FLAG=--32bit

script:
  # Travis will time out our build if doesn't output anything for > 10 mintes,
  # but --verbose sometimes outputs more than 4 MB of data, which will also
  # cause our build to be killed. travis_wait allows the command to be silent
  # for longer, but has the downside of not producing output if we timeout. See:
  # https://docs.travis-ci.com/user/common-build-problems/#Build-times-out-because-no-output-was-received
  # For now, stick with --verbose and keep an eye on the logs.
  - install/build_release.sh --verbose --skip_psol --debug $BIT_FLAG

notifications:
  email:
    - pagespeed-ci@googlegroups.com