- - if [ $CC = "clang" ]; then export PATH="/usr/bin/:$PATH"; sudo sh -c 'echo "deb http://ppa.launchpad.net/eudoxos/llvm-3.1/ubuntu precise main" >> /etc/apt/sources.list'; sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys 92DE8183; sudo apt-get update; sudo apt-get install llvm-3.1; sudo apt-get install clang; fi
+ - if [ $CC = "clang" ]; then export PATH="/usr/bin/:$PATH"; sudo sh -c 'echo "deb http://ppa.launchpad.net/eudoxos/llvm-3.1/ubuntu precise main" >> /etc/apt/sources.list'; sudo apt-key adv --keyserver pool.sks-keyservers.net --recv-keys 92DE8183; sudo apt-get update; sudo apt-get install llvm-3.1; sudo apt-get install clang; fi