The instructions for building Cygwin changed in April and the FAQ was updated (c66797ee), but the website doesn't appear to have been regenerated (https://cygwin.com/faq.html#faq.programming.building-cygwin).
Thanks! David -- Problem reports: https://cygwin.com/problems.html FAQ: https://cygwin.com/faq/ Documentation: https://cygwin.com/docs.html Unsubscribe info: https://cygwin.com/ml/#unsubscribe-simple
