Xlibs is the libraries for PulsarX/TransientX/BasebandX
- sofa library (https://www.iausofa.org/2020_0721_C/sofa_c-20200721.tar.gz)
- ./bootstrap
- ./configure --prefix=/install_path LDFLAGS="-L/path_to_sofa" CPPFLAGS="-I/path_to_sofa"
- make and make install