This is the updated version of the code used to search for Wieferich primes in:
F. G. Dorais and D. Klyve, A Wieferich Prime Search up to $6.7 \times 10^{15}$, Journal of Integer Sequences 14 (2011), art. 11.9.2. https://cs.uwaterloo.ca/journals/JIS/VOL14/Klyve/klyve3.html
The principles of operation are described in the paper. This version of WPSE uses the spin sieve rather than the magic sieve, which was used in the original version of WPSE.
Make sure you have a working autotools chain. Run autogen.sh to generate the configuration files. Then run configure and make, as usual...