playing with travis, trying to upgrade clangand g++ before compilation.

.travis.yml

@@ -1,12 +1,17 @@
 language: cpp
 
 compiler:
+  - clang
   - gcc
 
 before_install:
- - sudo add-apt-repository -y ppa:ubuntu-toolchain-r/test
+  - sudo add-apt-repository ppa:ubuntu-toolchain-r/test -y
- - sudo apt-get -qq update
+  - sudo apt-get update -qq
- - sudo apt-get -qq install g++-4.8
+  - sudo apt-get install -qq libyajl-dev libxml2-dev libxqilla-dev
+  - if [ "$CXX" = "clang++" ]; then sudo apt-get install -qq libstdc++-4.8-dev; fi
+  - if [ "$CXX" = "g++" ]; then sudo apt-get install -qq g++-4.8; fi
+  - if [ "$CXX" = "g++" ]; then export CXX="g++-4.8" CC="gcc-4.8"; fi
+
 
 env:
   - BUILD_TYPE=Debug