gxx version fix

Author: pythoneer

.travis.yml

@@ -3,8 +3,17 @@ before_install:
     - sudo add-apt-repository --yes ppa:ubuntu-toolchain-r/test
     - sudo apt-get update -qq
     - sudo apt-get install -qq qt5-qmake qtbase5-dev qtdeclarative5-dev libqt5webkit5-dev libsqlite3-dev libx11-dev libxtst-dev
+    - sudo update-alternatives --remove-all gcc 
+    - sudo update-alternatives --remove-all g++
     - sudo apt-get install gcc-4.8
-    - sudo update-alternatives --install /usr/bin/gcc gcc /usr/bin/gcc-4.8 50
+    - sudo apt-get install g++-4.8
+    - sudo update-alternatives --install /usr/bin/gcc gcc /usr/bin/gcc-4.8 20
+    - sudo update-alternatives --install /usr/bin/g++ g++ /usr/bin/g++-4.8 20
+    - sudo update-alternatives --config gcc
+    - sudo update-alternatives --config g++
+    - sudo apt-get update
+    - sudo apt-get upgrade -y
+    - sudo apt-get dist-upgrade
 script:
     - g++ --version
     - gcc --version