travis: Use docker-based builds, new baseline

Perform Linux builds in docker images, which allows us to freely
define the build environment rather than relying on the Travis host
system.

Use Ubuntu 16.04 "Xenial" as the new baseline for Quassel, allowing
us to make use of a more modern toolchain.

Reorganize and modernize travis.yml in general.

diff --git a/.travis.yml b/.travis.yml
index 42fae1f..83b3e03 100644 (file)
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,73 +1,77 @@
-os:
-  - linux
-
 sudo: required
-dist: trusty
 
-language: cpp
-cache: ccache
+services:
+  - docker
 
-compiler:
-  - gcc
-  - clang
+# Define build matrix for Linux
+os: linux
+language: generic  # No host compilation
 
 env:
-  - QT_VERSION=qt4
-  - QT_VERSION=qt5
+  - DIST=xenial CXX=g++
+  - DIST=xenial CXX=clang++
 
-matrix:
-  include:
-    - os: osx
-      compiler: gcc
-      env: QT_VERSION=qt5
-  exclude:
-    - compiler: clang
-      env: QT_VERSION=qt4
+# Set up cache
+cache:
+  directories:
+    - $TRAVIS_BUILD_DIR/ccache
 
-install: |-
-  if [ "$TRAVIS_OS_NAME" == "linux" ]
-  then
-    sudo apt-get -qy install libqt5webkit5-dev qttools5-dev qtscript5-dev
-    sudo apt-get -qy install libdbusmenu-qt-dev libdbusmenu-qt5-dev
-    sudo apt-get -qy install libphonon-dev libphonon4qt5-dev
-    sudo apt-get -qy install libqca2-dev
-    sudo apt-get -qy install qt4-dev-tools qttools5-dev-tools
-    sudo apt-get -qy install libphonon4qt5experimental4 # https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=805096
-  elif [ "$TRAVIS_OS_NAME" == "osx" ]
-  then
-    brew update
-    brew install ninja qt5
-  fi
+# Prepare
+before_install:
+  - docker pull quassel/quassel-build-env:$DIST
+  - docker images
+  - mkdir build
 
-script: |-
-  mkdir build
-  cd build
-  if [ "$TRAVIS_OS_NAME" == "linux" ]
-  then
-    if [ "$QT_VERSION" = "qt4" ]; then cmake -DUSE_QT4=ON ..; fi
-    if [ "$QT_VERSION" = "qt5" ]; then cmake ..; fi
-    make
-  elif [ "$TRAVIS_OS_NAME" == "osx" ]
-  then
-    PATH=$PATH:/usr/local/opt/qt5/bin
-    if [[ "$TRAVIS_TAG" != "" && "$GH_TOKEN" != "" ]]
-    then
-      cmake -G"Ninja" .. -DCMAKE_BUILD_TYPE=Release -DDEPLOY=ON
-    else
-      cmake -G"Ninja" .. -DCMAKE_BUILD_TYPE=Release
-    fi
-    ninja install
-  fi
+# Build inside the docker image
+# Source, build and ccache directories are bind-mounted into the container
+script:
+  - |
+    docker run -t -w /build --rm \
+               -v "$(readlink -f .):/src" \
+               -v "$(readlink -f build):/build" \
+               -v "$(readlink -f ccache):/ccache" \
+               -e CCACHE_DIR=/ccache \
+               -e CXX=$CXX \
+               quassel/quassel-build-env:$DIST \
+               sh -c "cmake -GNinja /src \
+                            -DCMAKE_BUILD_TYPE=RelWithDebInfo \
+                      && ninja install \
+                      && ccache -s \
+                     "
 
-deploy:
-  provider: releases
-  api_key: "${GH_TOKEN}"
-  file_glob: true
-  file:
-    - "QuasselClient_MacOSX-x86_64_*.dmg"
-    - "QuasselCore_MacOSX-x86_64_*.dmg"
-    - "QuasselMono_MacOSX-x86_64_*.dmg"
-  skip_cleanup: true
-  on:
-    tags: true
-    condition: "$TRAVIS_OS_NAME == 'osx' && $GH_TOKEN != ''"
+# Define a separate job for OSX
+jobs:
+  include:
+    - os: osx
+      language: cpp
+      compiler: clang
+      env:
+      cache:
+        directories:
+          - $HOME/.ccache
+          - $HOME/Library/Caches/Homebrew
+      before_install:
+        - brew update && brew install ccache ninja qca qt5
+      script:
+        - mkdir build && cd build
+        - |
+          PATH=$PATH:/usr/local/opt/qt5/bin
+          DEPLOY=OFF
+          if [[ "$TRAVIS_TAG" != "" && "$GH_TOKEN" != "" ]]; then
+            DEPLOY=ON
+          fi
+          cmake -GNinja .. -DCMAKE_BUILD_TYPE=Release -DDEPLOY=$DEPLOY
+          ninja install
+        - ccache -s
+      deploy:
+        provider: releases
+        api_key: "${GH_TOKEN}"
+        file_glob: true
+        file:
+          - "QuasselClient_MacOSX-x86_64_*.dmg"
+          - "QuasselCore_MacOSX-x86_64_*.dmg"
+          - "QuasselMono_MacOSX-x86_64_*.dmg"
+        skip_cleanup: true
+        on:
+          tags: true
+          condition: "$GH_TOKEN != ''"