Build RTL-SDR on OSX with no tears using homebrew. Forked from https://gist.github.com/0xabad1dea/5777726, a macports solution.

rtlsdr-osx.txt

rtl-sdr build notes for OSX 
using macports http://www.macports.org/
see http://sdr.osmocom.org/trac/wiki/rtl-sdr

brew install cmake
brew install libusb
brew install pkgconfig
brew install sox # for easy audio
git clone git://git.osmocom.org/rtl-sdr.git
cd rtl-sdr/
mkdir build
cd build/
cmake ../
make
sudo make install


rtl_test -t


Found 1 device(s):
  0:  Realtek, RTL2838UHIDIR, SN: 00000001

Using device 0: Generic RTL2832U OEM
Found Rafael Micro R820T tuner
Supported gain values (29): 0.0 0.9 1.4 2.7 3.7 7.7 8.7 12.5 14.4 15.7 16.6 19.7 20.7 22.9 25.4 28.0 29.7 32.8 33.8 36.4 37.2 38.6 40.2 42.1 43.4 43.9 44.5 48.0 49.6 
Sampling at 2048000 S/s.
No E4000 tuner found, aborting.