It then thinks there should be a rule to make the .c file, which does
not exist of course. Luckily, we can tell it that version.o is .PHONY,
and this will still cause the .o file to be regenerated and linked into
the binaries everytime make is called.
sbin_PROGRAMS = tincd tinc sptps_test sptps_keypair
## Make sure version.c is always rebuilt
sbin_PROGRAMS = tincd tinc sptps_test sptps_keypair
## Make sure version.c is always rebuilt
if LINUX
sbin_PROGRAMS += sptps_speed
if LINUX
sbin_PROGRAMS += sptps_speed