Installing UHD and GNU Radio from source on a Raspberry Pi.

Compiling and installing this from source will take a long time, but you can install the latest.

GNU Radio 3.10 (other versions can be installed by selecting the version with the git checkout statement)

Prerequisites

Install these packages. (some may already be installed).

# On older operating systems, you may have to substitute your version of volk:
sudo apt install g++ libcodec2-dev libvolk2-bin libvolk2-dev libvolk2.5 build-essential libgtk-3-dev

sudo apt install libboost-all-dev libgmp-dev swig python3-requests python3-ruamel.yaml python3-setuptools python3-numpy python3-mako python3-sphinx python3-lxml doxygen libsdl1.2-dev libgsl-dev libzmq3-dev python3-yaml python3-click python3-click-plugins python3-zmq python3-scipy python3-docutils liborc-0.4-0 liborc-0.4-dev python3-gi-cairo python3-waitress liblog4cpp5-dev liblog4cpp5v5
sudo apt install libsndfile1-dev osspd osspd-pulseaudio sudo osspd-alsa libcppunit-dev libqt5opengl5-dev libpthread-stubs0-dev libudev-dev
sudo apt install pybind11-dev python3-pybind11 pybind11-json-dev libspdlog-dev libspdlog1
pip install pygccxml

Install recommended packages

sudo apt install python3-matplotlib python3-networkx python3-pyqt5.qwt libeigen3-dev python3-json-pointer python3-rfc3987 python3-uritemplate python3-webcolors python3-pyqt5.qtopengl

Install UHD
Note that GNU Radio > 3.8 requires UHD 4 or higher.
Building this from source will take a long time, however, you should be able to unstall the packages as follows:
sudo apt-get install --no-install-recommends libuhd4.2.0 libuhd-dev
Otherwise, continue installing from source below.
```
cd ~/
git clone https://github.com/EttusResearch/uhd.git
cd ~/uhd
# git tag -l # list versions available
git checkout v4.1.0.0
cd host
mkdir build
cd build
cmake -DNEON_SIMD_ENABLE=OFF ../
make -j4
make test
sudo make install
sudo ldconfig
```

Install UHD FPGA images

sudo uhd_images_downloader
cd ~/uhd/host/utils
sudo cp uhd-usrp.rules /etc/udev/rules.d/
sudo udevadm control --reload-rules
sudo udevadm trigger
# The installation of UHD is now complete. At this point, connect the USRP to the host computer and run:
uhd_usrp_probe

Installing GNU Radio 3.10. The latest version as of this writing was 3.10.5.0 released on 12/19/2022.

Please be sure to install the prerequisite packages at the top of this page.
The next steps will take two or more hours. Be patient. The terminal does show the progress.
These steps are based on the install instructions at https://wiki.gnuradio.org/index.php/InstallingGR#From_Source

cd ~/
git clone https://github.com/gnuradio/gnuradio.git
cd gnuradio
# In the following command, change to another branch or tag if you want to build a different version of GNU Radio;
git checkout maint-3.10
mkdir build
cd build
cmake -DCMAKE_BUILD_TYPE=Release -DPYTHON_EXECUTABLE=/usr/bin/python3 ../

# check cmake the output for codec2/freedv entries - freedv_api.h
make -j4

# If you want to test the installation
make test

sudo make install

# With LightDM, put PYTHONPATH in ~/.xsessionrc instead of ~/.profile
mousepad ~/.xsessionrc
# mousepad ~/.profile
# add this  export command to the end of the file or to any existing PYTHONPATH line. Save changes to make the variables permanent.
# you will need to change the path if you are not using python 3.10.
export PYTHONPATH=/usr/lib/python3.10/dist-packages:/usr/lib/python3/dist-packages:/usr/local/lib/python3.10/dist-packages:$PYTHONPATH

Create a file named /etc/ld.so.conf.d/gnuradio.conf containing: /usr/local/lib

sudo mousepad /etc/ld.so.conf.d/gnuradio.conf
# insert the line: /usr/lib
# Save the file

sudo ldconfig

# Show version
gnuradio-config-info -v

Run VOLK profiler for optimal performance
```
volk_profile
```
reboot

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