[Simh] SIMH on Fedora 8

[Bill Beech (NJ7P)]

Tried to build 3.7.3 on a Fedora 8 box, but got the following error:

gcc -std=c99 -O2 -U__STRICT_ANSI__ -g -lm -D_GNU_SOURCE -I . 
PDP1/pdp1_lp.c PDP1/pdp1_cpu.c PDP1/pdp1_stddev.c PDP1/pdp1_sys.c 
PDP1/pdp1_dt.c PDP1/pdp1_drm.c PDP1/pdp1_clk.c PDP1/pdp1_dcs.c scp.c 
sim_console.c sim_fio.c sim_timer.c sim_sock.c sim_tmxr.c sim_ether.c 
sim_tape.c -I PDP1 -o BIN/pdp1
/tmp/ccBKOD9T.o: In function `sim_os_ms_sleep_init':
/root/Emulators/SIMH-3.7.3/sim_timer.c:302: undefined reference to 
`clock_getres'
collect2: ld returned 1 exit status
make: *** [BIN/pdp1] Error 1

What library am I missing?  3.7.0 build fine on Fedora8.

Thanks!

Bill