Update 5/2014
May want to try these instructions from gnuradio.org: http://gnuradio.org/redmine/projects/gnuradio/wiki/MacInstall
Original post
I used these instructions today (12/3/2013) (mac os 10.8)
http://penturalabs.wordpress.com/2013/09/14/gnuradio-osx-installation-guide/
gnuradio-companion
# gnuradio-companion
also take a look at this post: – at the very bottom – is the simple list of instructions for installing gnu-radio and rtl-sdr
https://sites.google.com/site/alalbiolupv/tips-howtos/rtl-sdr-osx
Here is an example of rtl-sdr command, which now works from macports install:
/opt/local/bin/rtl_fm -f 94900000 -W -s 200000 -r 48000 - | play -r48000 -t s16 -L -c 1 -