Installed the following packages through MacPorts in order to build gnuradio

- boost +python25
- libtool
- automake
- autoconf
- cppunit
- sdcc (2.8 !!!)
- subversion +tools
- fftw-3-single
- gsl
- guile
- libusb
- py25-numpy
- wxWidgets
- py25-wxpython
- python_select

Ran sudo python_select python25

Built and installed GNURadio 3.2 (revision xxx) to /opt/gnuradio as follows:

GR=/opt/gnuradio
sudo mkdir $GR
sudo chown $USER $GR
sed 's/libtoolize/glibtoolize' < bootstrap > bootstrap_mp
chmod 755 bootstrap_mp
./bootstrap_mp
./configure --prefix=$GR  \             
--disable-all-components \
--enable-gnuradio-core --enable-usrp \
--enable-gr-usrp --enable-gr-wxgui --enable-gr-audio-osx \    
--enable-gnuradio-examples --enable-gr-utils \
--enable-gr-how-to-write-a-block --enable-omnithread \
--enable--gruel --enable-mblock --enable-pmt
make && make install && make check