Problem under OpenBSD

Under OpenBSD 5.0 I get: Linking C executable rtl_test /usr/bin/ld: cannot find -lrt collect2: ld returned 1 exit status gmake[2]: *** [src/rtl_test] Error 1 gmake[1]: *** [src/CMakeFiles/rtl_test.dir/all] Error 2 gmake: *** [all] Error 2 It built librtlsdr.so.0.0, rtl_eeprom, rtl_fm, rtl_sdr, rtl_tcp so I think it mostly worked. In /usr/tmp/hardware/rtl_dongle/osmocom/git/rtl-sdr/build/src/CMakeFiles/rtl_test.dir/link.txt I see: -lpthread -lm -lrt -Wl The whole link.txt says (continuation \ added by me to shorten lines): /usr/bin/gcc  -DNDEBUG  -L/usr/local/lib CMakeFiles/rtl_test.dir/rtl_test.c.o \  -o rtl_test  librtlsdr.so.0.0 /usr/local/lib/libusb-1.0.so.1.0 -lpthread -lm \ -lrt -Wl,-rpath,/usr/tmp/hardware/rtl_dongle/osmocom/git/rtl-sdr/build/src \ -Wl,-rpath-link,/usr/X11R6/lib:/usr/local/lib It looks like it's trying to link against a library it hasn't installed yet. Is this just an OpenBSD thing or has it happened to anyone else?  I saw hamlib do something similar but I had an old version of that installed.   Alan, ab1jx ---------------------------------------------- Radio Astronomy - the ultimate DX