Chaging the defines in package may break others installation. You can set the version in source code as you need, for example:
#undef _WIN32_WINNT #define _WIN32_WINNT 0x602 -- 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