Building files in this directory depends on several files being already built in the ../lib directory. So to build files here, the ./configure needs to be executed in the parent directory followed by changing directory to the lib directory and calling 'make' there. Another way is to do a top level 'make' after the ./configure which will make the libraries followed by all the utilities in the src/ directory. To make them in FreeBSD use 'make -f Makefile.freebsd' . There is an brief explanation of each example in the README file in the main (i.e. this directory's parent) directory. There are also some notes at the top of each source file. Some files that were previously in this directory have been moved to the 'testing' directory. Douglas Gilbert 19th January 2018