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no clang++
sudo apt-get install clang-3.5 llvm
sudo ln -s /usr/bin/clang-3.5 /usr/bin/clang sudo ln -s /usr/bin/clang++-3.5 /usr/bin/clang++
sudo apt-get install libswscale-dev
https://git.gnome.org/browse/libxml2/
sudo apt-get install python-dev
sudo apt-get install libtool
sudo apt-get install autoconf
ln -s /usr/local/include/libxml2 /usr/include/libxml2
sudo apt-get install libxslt1-dev