fix: use external eigen library
mkdir build_yaafe
cd build_yaafe
-# cmake -DCMAKE_INSTALL_PREFIX=$PREFIX -DDL_ROOT=/usr/lib/x86_64-linux-gnu/ -DWITH_FFTW3=ON -DWITH_HDF5=ON -DWITH_LAPACK=ON -DWITH_MPG123=ON ..
-cmake -DCMAKE_INSTALL_PREFIX=$PREFIX -DWITH_FFTW3=ON -DWITH_HDF5=ON -DWITH_LAPACK=ON -DWITH_MPG123=ON ..
+cmake -DCMAKE_INSTALL_PREFIX=$PREFIX -DWITH_FFTW3=ON -DWITH_HDF5=ON -DWITH_LAPACK=ON -DWITH_MPG123=ON -DWITH_EIGEN_LIBRARY=ON ..
make
make install
