The nafe tarball does not have a configuration file, so it would be rather surprising if ./configure would have some result. The purpose of ./configure would be the creation of a Makefile. Nafe provides it's own Makefile - a very simple one, actually. 'make all' and 'make' have the same effect, because the 'all' branch is the first and default one.
Making nafe gives a few warnings about implicit declaration, but otherwise it compiles the binaries.
The Makefile does NOT have any 'install' branch, so you will have to copy the two binaries to /usr/bin or /usr/local/bin by yourself (needs root privileges to do so).
To run the executables within the build directory type ./psf2txt or ./txt2psf
a simple psf2txt or txt2psf will not do, for valid system security reasons on UNIX systems.
linux