Hi all, I need to use rwlocks in my program, I discovered what I have phtread_rwlock(s) defined in the file phreads.h, but it's included only when I have __USE_UNIX98 defined. To define __USE_UNIX98 I must define some _X... variable to 500, before the file features.h is included (it's included at the top of pthreads.h) After I discovered all that and defined that _X.. var to 500, I still have no pthread_rwlocks_t defined. Q1: Did anybody know how should I properly include the file to have rwlocks defined. Q1: Why this complicated way is used - are there any problems with rwlocks in linux? Thanks, @Maxim ================================================================= To unsubscribe, send mail to [EMAIL PROTECTED] with the word "unsubscribe" in the message body, e.g., run the command echo unsubscribe | mail [EMAIL PROTECTED]