MacOSX/Darwin has its own definition for alarm() in libSystem (MacOSX's equivalent of libc), causing a multiple symbol definition error when linking temacs. Is the alarm() in signal.c equivalent to the one in libc? If so, why is it redefined in signal.c? Perhaps it's to correct for a broken libc alarm() on some platforms? Andrew (Here's the manpage: LIBRARY Standard C Library (libc, -lc) SYNOPSIS #include <unistd.h> unsigned int alarm(unsigned int seconds); DESCRIPTION This interface is made obsolete by setitimer(2). The alarm() function sets a timer to deliver the signal SIGALRM to the calling process after the specified number of seconds. If an alarm has already been set with alarm() but has not been delivered, another call to alarm() will supersede the prior call. The request alarm(0) voids the current alarm and the signal SIGALRM will not be delivered. Due to setitimer(2) restriction the maximum number of seconds allowed is 100000000. ) ----------- Andrew Begel Ph.D. Candidate Computer Science Division University of California, Berkeley