The node server (ASFnode) depends on two external packages that you must install and build first: the SAI search interface, and the libemerge library. These packages should be included with your distribution or at the location where you found this package. After installing and building those two packages, change to the src/ directory and edit the Makefile according to comments in that file. Save changes, if any, then type make from either the src directory or the top-level directory. If all goes well, you should have a binary in the bin/ directory called ASFnode. If you experience problems, please contact me.