11 - ubuntu-toolchain-r-test
12 - llvm-toolchain-precise-3.6
19 - if [ "$CXX" = "g++" ] ; then export CXX="g++-4.9" CC="gcc-4.9" ; fi
20 - if [ "$CXX" = "clang++" ] ; then export CXX="clang++-3.6" CC="clang-3.6" ; fi
22 # install a recent cmake
23 - wget http://www.cmake.org/files/v3.2/cmake-3.2.3-Linux-x86_64.tar.gz
24 - tar -xf cmake-3.2.3-Linux-x86_64.tar.gz
25 - rm -f cmake-3.2.3-Linux-x86_64.tar.gz
26 - export PATH=${PWD}/cmake-3.2.3-Linux-x86_64/bin:${PATH}