Installing Eigen

Procedure

1. Use PuTTY to log in to the server as the root user.
2. Use an SFTP tool to upload the Eigen installation package to the /path/to/EIGEN directory.
3. Run the following command to decompress the installation package:

   cd /path/to/EIGEN && tar -zxf eigen-3.3.8.tar.gz

4. Run the following command to go to the directory generated after the decompression:

   cd eigen-3.3.8

5. Run the following commands to perform the compilation and installation:

   mkdir build
   cd build
   cmake -DCMAKE_INSTALL_PREFIX=/path/to/EIGEN ..
   make install