FreeBSD with GPS to give Stratum 0 time source
I have ordered a bu-353 gps mouse. I hope to add this to Freebsd as it uses a prolific chipset, so using ucom and uplcom it should map as /dev/ttyU0 . To use this as a time source , I can configure NTPd via ntp.conf , to use the serial port, or I can used gpsd to manage the gps, and tell ntp.conf to use shared memory to read from gpsd. not using gpsd is attractive as it's relatively large, 1.5MB statically compiled. To statically compile, you need to run configure, in my case like this ./configure --disable-python --enable-static --disable-shared --prefix=/usr/local/m0n0/ --disable-sirf --disable-tsip --disable-fv18 --disable-tripmate --disable-earthmate --disable-itrax --disable-ashtech --disable-navcom --disable-garmin --disable-ubx --disable-evermore --disable-gpsclock --disable-rtcm104 --disable-ntrip --enable-fixed-port-speed=4800 then modify the Makefile to add -all-static like this; LINK = $(LIBTOOL) --tag=CC --mode=link $(CCLD) $(AM_CFLAGS) \ $(CFLAGS) $(AM_LDFLAGS) $(LDF...