GNU Radio 4.0

Introduction
GNU Radio 4.0 represents a major shift in the framework to allow for new functionality that has required architectural change to allow, such as:


 * Modular Runtime Components
 * Improved Support of Heterogeneous Architectures
 * Support for Distributed Architectures

To see a full description of the proposed features for 4.0, please see GNU_Radio_4.0_Summary_of_Proposed_Features

Getting and Installing
Currently GR 4.0 is not packaged, but can be easily built from source:

Dependencies
A complete list of dependencies can be found in the CI worker build scripts. These include:


 * meson-build
 * ninja
 * jinja2
 * gcc (or clang)
 * spdlog
 * libfmt
 * gtest
 * pybind11
 * python3
 * numpy
 * soapysdr
 * libasound
 * portaudio
 * flatbuffers-compiler
 * zmq
 * pyyaml

Ubuntu
sudo apt install libzmq3-dev libspdlog-dev libyaml-cpp-dev libgtest-dev libfmt-dev pybind11-dev python3-dev python3-numpy build-essential cmake ninja-build libfftw3-dev libgmp-dev libgsl0-dev git python3-pip pkg-config libsoapysdr-dev libasound2 portaudio19-dev libad9361-0

pip install meson ninja mako jinja2 pyyaml zmq jsonschema jsonschema-default

For Ubuntu 22.04, VOLK can be installed from apt sudo apt install libvolk2-dev

But for Ubuntu 20.04, we must install VOLK from source mkdir -p /src/build git clone --recursive https://github.com/gnuradio/volk.git /src/volk --branch v2.4.1 cd /src/build && cmake -DCMAKE_BUILD_TYPE=Release ../volk/ && make && make install && cd / && rm -rf /src/
 * 1) Install VOLK

For both 22.04 and 20.04, flatbuffers must be installed from source mkdir -p /src/build git clone https://github.com/google/flatbuffers.git /src/flatbuffers --branch v2.0.0 cd /src/build && cmake -DCMAKE_BUILD_TYPE=Release ../flatbuffers/ && make && make install && cd / && rm -rf /src/
 * 1) Install Flatc

Fedora
sudo dnf install cmake gcc gcc-c++ spdlog-devel fmt-devel yaml-cpp-devel gtest-devel cppzmq-devel fftw-devel gsl-devel gmp-devel volk-devel SoapySDR-devel python3-devel python3-pybind11 python3-numpy python3-pip python3-pyyaml python3-lxml python3-gobject gtk3 python3-cairo pango SDL-devel alsa-lib-devel portaudio-devel jack-audio-connection-kit-devel libsndfile-devel git flatbuffers-devel flatbuffers-compiler

pip install meson ninja mako six jinja2 pyyaml zmq jsonschema jsonschema-default

Creating a Prefix
An isolated prefix provides a convenient way to develop and utilize multiple versions of GNU Radio simultaneously (e.g. GR 3.10 and GR 4.0) without interference.

1. Create a directory that will be the root of your prefix

This might be  or   or anywhere else you like to keep a big directory (build files can grow to several GB). We will refer to this directory as

2. Create a  file into the prefix root. This file should look contain something similar to (edit your  and python version export GR_PREFIX="/path/to/my/prefix" export PATH="$GR_PREFIX/bin:$PATH" export PYTHONPATH="$GR_PREFIX/lib/python3/site-packages:$GR_PREFIX/lib/python3/dist-packages:$GR_PREFIX/lib/python3.8/site-packages:$GR_PREFIX/lib/python3.8/dist-packages:$GR_PREFIX/lib64/python3/site-packages:$GR_PREFIX/lib64/python3/dist-packages:$GR_PREFIX/lib64/python3.8/site-packages:$GR_PREFIX/lib64/python3.8/dist-packages:$PYTHONPATH" export LD_LIBRARY_PATH="$GR_PREFIX/lib:$GR_PREFIX/lib64/:$GR_PREFIX/lib/x86_64-linux-gnu:$LD_LIBRARY_PATH" export LIBRARY_PATH="$GR_PREFIX/lib:$GR_PREFIX/lib64/:$GR_PREFIX/lib/x86_64-linux-gnu:$LIBRARY_PATH" export PKG_CONFIG_PATH="$GR_PREFIX/lib/pkgconfig:$GR_PREFIX/lib64/pkgconfig:$PKG_CONFIG_PATH"

3.  - do this every time you open the terminal to enter the development or runtime in this prefix

Getting the GR4 Source
Open a new terminal window cd $GR_PREFIX mkdir src && cd src git clone https//github.com/gnuradio/gnuradio --branch dev-4.0

Building and installing GR4
cd gnuradio meson setup build --libdir=lib --prefix=$GR_PREFIX cd build ninja ninja test ninja install

Note that nothing in installing to the prefix should require

Creating an Out of Tree Module
There is currently no  in GR 4.0, but Out of tree modules can be created very easily with some helper scripts

Please see the tutorial Creating OOT Module in GR 4.0