--prefix="": installs binaries on the root partition so that they are available at boot time. This may not be ideal for all systems. If /usr is mounted locally, --prefix=/usr may be a better option. --includedir=/usr/include: Tells configure to look in /usr/include for header files. It also tells make to install NCPFS's headers here. --mandir=/usr/share/man: installs the man pages in the correct location. --datadir=/usr/share: correctly installs the locale files to /usr/share. If you do not need to use the IPX protocol, or you use a different IPX package, you can optionally pass --disable-ipx and/or --disable-ipx-tools to the configure script to disable these options.