Update to xenial in travis

Author: paceholder

.travis.yml

@@ -1,32 +1,30 @@
-language: none
+language: cpp
 
 matrix:
   include:
     - os: linux
-      dist: trusty
+      dist: xenial
+      sudo: false
       compiler: clang
-      env: CXX=clang++-3.8 CC=clang-3.8
+      env: CXX=clang++-7 CC=clang-7 QT=511
       addons:
         apt:
           sources:
-            - ubuntu-toolchain-r-test
-            - llvm-toolchain-precise-3.8
+            - llvm-toolchain-xenial-7
           packages:
-            - clang-3.8
-              # VERY IMPORTANT TO INSTALL g++-5! clang doesn't come with a standard library, so
-              # we need to install g++-5 for a C++14 standard library.
-            - g++-5
+            - clang-7
 
     - os: linux
-      dist: trusty
+      dist: xenial
+      sudo: false
       compiler: gcc
-      env: CXX=g++-5 CC=gcc-5 QT=5
+      env: CXX=g++-7 CC=gcc-7 QT=511
       addons:
         apt:
           sources:
             - ubuntu-toolchain-r-test
           packages:
-            - g++-5
+            - g++-7
 
     - os: osx
       osx_image: xcode8.3
@@ -41,7 +39,9 @@ before_install:
    - if [[ "$TRAVIS_OS_NAME" == "osx" ]]; then brew install qt; fi
    - if [[ "$TRAVIS_OS_NAME" == "linux" ]]; then sudo apt-get update -qq ; fi
    - if [[ "$TRAVIS_OS_NAME" == "linux" ]]; then sudo apt-get install build-essential libgl1-mesa-dev ; fi
-   - if [[ "$TRAVIS_OS_NAME" == "linux" ]]; then sudo apt-get -yy install qtbase5-dev ; fi
+   - if [[ "$QT" == "511" ]]; then sudo add-apt-repository ppa:beineri/opt-qt-5.11.2-xenial -y; fi
+   - if [[ "$QT" == "511" ]]; then sudo apt-get update -qq; fi
+   - if [[ "$TRAVIS_OS_NAME" == "linux" ]]; then sudo apt-get -yqq install qt511base; source /opt/qt511/bin/qt511-env.sh; fi
 
 script:
   - mkdir build