curr_dir=`pwd` cd /tmp wget <https://gitlab.com/libeigen/eigen/-/archive/3.3.4/eigen-3.3.4.tar.bz2> tar xzvf eigen-3.3.4.tar.bz2 cd eigen-3.3.4.tar.bz2 mkdir build cd build cmake .. sudo make install cd "$curr_dir"
eigen-3.3.4.tar.bz2