+# - clang
+
+# Don't install lua from Debian as we need 5.3 and don't have a backport.
+# Installing lua from the source does not make any dynamic library.
+# - curl http://www.lua.org/ftp/lua-5.3.1.tar.gz | tar xz
+# - cd lua-5.3.1
+# - if [ ${TRAVIS_OS_NAME} = 'linux' ] ; then make linux ; else make macosx ; fi
+# - make INSTALL_TOP=$TRAVIS_BUILD_DIR/LuaInstall install
+# - cd ..
+# - ls -lR $TRAVIS_BUILD_DIR/LuaInstall
+