language: c

cache:
  ccache: true

compiler:
  - gcc
  - clang

os:
  - linux
  - osx

## The build matrix in the following stanza expands into builds for each
## OS and compiler.
env:
  global:
    ## The Travis CI environment allows us two cores, so let's use both.
    - MAKEFLAGS="-j 2"
    ## We turn on hardening by default
    ## Also known as --enable-fragile-hardening in 0.3.0.3-alpha and later
    - HARDENING_OPTIONS="--enable-expensive-hardening"
    ## We turn off asciidoc by default, because it's slow
    - ASCIIDOC_OPTIONS="--disable-asciidoc"
  matrix:
    ## We want to use each build option at least once
    ##
    ## We don't list default variable values, because we set the defaults
    ## in global (or the default is unset)
    -

matrix:
  ## include creates builds with gcc, linux, sudo: false
  include:
    ## We include a single coverage build with the best options for coverage
    - env: COVERAGE_OPTIONS="--enable-coverage" HARDENING_OPTIONS=""
    ## We only want to check these build option combinations once
    ## (they shouldn't vary by compiler or OS)
    - env: HARDENING_OPTIONS=""
    ## We check asciidoc with distcheck, to make sure we remove doc products
    - env: DISTCHECK="yes" ASCIIDOC_OPTIONS=""

  ## Uncomment to allow the build to report success (with non-required
  ## sub-builds continuing to run) if all required sub-builds have
  ## succeeded.  This is somewhat buggy currently: it can cause
  ## duplicate notifications and prematurely report success if a
  ## single sub-build has succeeded.  See
  ## https://github.com/travis-ci/travis-ci/issues/1696
  # fast_finish: true

  ## Careful! We use global envs, which makes it hard to exclude or
  ## allow failures by env:
  ## https://docs.travis-ci.com/user/customizing-the-build#matching-jobs-with-allow_failures
  exclude:
    ## Clang doesn't work in containerized builds, see below.
    - compiler: clang
      sudo: false
    ## We also exclude non-containerized gcc, because they're slow and redundant.
    - compiler: gcc
      sudo: required

## We don't need sudo. (The "apt:" stanza after this allows us to not need
## sudo; otherwise, we would need it for getting dependencies.)
##
## But we use "sudo: required" to force non-containerized builds, working
## around a Travis CI environment issue: clang LeakAnalyzer fails
## because it requires ptrace and the containerized environment no
## longer allows ptrace.
## https://github.com/travis-ci/travis-ci/issues/9033
##
## In the matrix above, we exclude redundant combinations.
sudo:
  - false
  - required

## (Linux only) Use the latest Linux image (Ubuntu Trusty)
dist: trusty

## (Linux only) Download our dependencies
addons:
  apt:
    packages:
      ## Required dependencies
      - libevent-dev
      - zlib1g-dev
      ## Optional dependencies
      - libcap-dev
      - libscrypt-dev
      - libseccomp-dev
      ## Conditional dependencies
      ## Always installed, so we don't need sudo
      - asciidoc
      - docbook-xsl
      - docbook-xml
      - xmlto

## (OSX only) Use the default OSX image
## See https://docs.travis-ci.com/user/reference/osx#os-x-version
## Default is Xcode 9.4 on macOS 10.13 as of August 2018
#osx_image: xcode9.4

before_install:
  ## If we're on OSX, homebrew usually needs to be updated first
  - if [[ "$TRAVIS_OS_NAME" == "osx" ]]; then brew update; fi
  ## We might be upgrading some useless packages, but that's better than missing an upgrade
  - if [[ "$TRAVIS_OS_NAME" == "osx" ]]; then brew upgrade; fi

install:
  ## If we're on OSX use brew to install ccache (ccache is automatically installed on Linux)
  - if [[ "$TRAVIS_OS_NAME" == "osx" ]]; then brew install ccache; fi
  - if [[ "$TRAVIS_OS_NAME" == "osx" ]]; then export PATH="/usr/local/opt/ccache/libexec:$PATH"; fi
  ## If we're on OSX use brew to install required dependencies (for Linux, see the "apt:" section above)
  - if [[ "$TRAVIS_OS_NAME" == "osx" ]]; then brew install libevent; fi
  - if [[ "$TRAVIS_OS_NAME" == "osx" ]]; then brew install openssl; fi
  - if [[ "$TRAVIS_OS_NAME" == "osx" ]]; then brew install pkg-config; fi
  ## macOS comes with zlib by default, so the homebrew install is keg-only
  # - if [[ "$TRAVIS_OS_NAME" == "osx" ]]; then brew install zlib; fi
  ## If we're on OSX also install the optional dependencies
  - if [[ "$TRAVIS_OS_NAME" == "osx" ]]; then brew install libscrypt; fi
  ## If we're on OSX, OpenSSL is keg-only, so tor 0.2.9 and later need to be configured --with-openssl-dir= to build
  - if [[ "$TRAVIS_OS_NAME" == "osx" ]]; then OPENSSL_OPTIONS=--with-openssl-dir=`brew --prefix openssl`; fi
  ## Install conditional features
  ## Install coveralls
  - if [[ "$COVERAGE_OPTIONS" != "" ]]; then pip install --user cpp-coveralls; fi
  ## If we're on OSX, and using asciidoc, install asciidoc
  - if [[ "$ASCIIDOC_OPTIONS" == "" ]] && [[ "$TRAVIS_OS_NAME" == "osx" ]]; then brew install asciidoc; fi
  ##
  ## Finally, list installed package versions
  - if [[ "$TRAVIS_OS_NAME" == "linux" ]]; then dpkg-query --show; fi
  - if [[ "$TRAVIS_OS_NAME" == "osx" ]]; then brew list --versions; fi

script:
  - ./autogen.sh
  - CONFIGURE_FLAGS="$ASCIIDOC_OPTIONS $COVERAGE_OPTIONS $HARDENING_OPTIONS $OPENSSL_OPTIONS --enable-fatal-warnings --disable-silent-rules"
  - echo $CONFIGURE_FLAGS
  - ./configure $CONFIGURE_FLAGS
  ## We run `make check` because that's what https://jenkins.torproject.org does.
  - if [[ "$DISTCHECK" == "" ]]; then make check; fi
  - if [[ "$DISTCHECK" != "" ]]; then make distcheck DISTCHECK_CONFIGURE_FLAGS="$CONFIGURE_FLAGS"; fi

after_failure:
  ## configure will leave a log file with more details of config failures.
  ## But the log is too long for travis' rendered view, so tail it.
  - tail -1000 config.log
  ## `make check` will leave a log file with more details of test failures.
  - if [[ "$DISTCHECK" == "" ]]; then cat test-suite.log; fi
  ## `make distcheck` puts it somewhere different.
  - if [[ "$DISTCHECK" != "" ]]; then make show-distdir-testlog; fi

after_success:
  ## If this build was one that produced coverage, upload it.
  - if [[ "$COVERAGE_OPTIONS" != "" ]]; then coveralls -b . --exclude src/test --exclude src/trunnel --gcov-options '\-p'; fi

notifications:
  irc:
    channels:
      - "irc.oftc.net#tor-ci"
    template:
      - "%{repository} %{branch} %{commit} - %{author}: %{commit_subject}"
      - "Build #%{build_number} %{result}. Details: %{build_url}"
    on_success: change
    on_failure: change
  email:
    on_success: never
    on_failure: change