definitions in newlib. (LOCK_EX): Ditto. (LOCK_NB): Ditto. (LOCK_UN): Ditto. (flock): Ditto. (F_OK): Drop. Already correctly defined in unistd.h. (X_OK): Ditto. (W_OK): Ditto. (R_OK): Ditto.
THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. Cygwin documentation is available on the net at http://cygwin.com You might especially be interested in http://cygwin.com/faq/faq.programming.html#faq.programming.building-cygwin