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You have 3 ways to install odr-dabmod on your host:
# Using binary debian packages
If your host is running a debian-based OS and its cpu is one of amd64, arm64 or arm/v7, then you can install odr-dabmod using the standard debian packaging system:
1. Update the debian apt repository list:
```
curl -fsSL http://debian.opendigitalradio.org/odr.asc | sudo tee /etc/apt/trusted.gpg.d/odr.asc 1>/dev/null
curl -fsSL http://debian.opendigitalradio.org/odr.list | sudo tee /etc/apt/sources.list.d/odr.list 1>/dev/null
```
1. Refresh the debian packages list:
```
apt update
```
1. Install odr-audioenc:
```
sudo apt install --yes odr-dabmod
```
**Attention**: odr- (2.6.0-1) does not include the web-based GUI and Digital Predistortion Computation engine
# Using the dab-scripts
You can compile odr-dabmod as well as the other main components of the mmbTools set with an installation script:
1. Clone the dab-scripts repository:
```
git clone https://github.com/opendigitalradio/dab-scripts.git
```
1. Follow the [instructions](https://github.com/Opendigitalradio/dab-scripts/tree/master/install)
# Compiling manually
Unlike the 2 previous options, this one allows you to compile odr-dabmod with the features you really need.
## Dependencies
### Debian Bullseye-based OS:
```
# Required packages
## C++11 compiler
sudo apt-get install --yes build-essential automake libtool
## FFTW 3.x
sudo apt-get install --yes libfftw3-dev
# optional packages
## ZeroMQ http://www.zeromq.org
sudo apt-get install --yes libzmq3-dev libzmq5
## UHD for USRP
sudo apt-get install --yes libuhd-dev
## LimeSuite for LimeSDR support
sudo apt-get install --yes liblimesuite-dev
## SoapySDR (see below)
sudo apt-get install --yes libsoapysdr-dev
## bladerf (see below)
sudo apt-get install --yes libbladerf-dev
```
## Compilation
1. Clone this repository:
```
# stable version:
git clone https://github.com/Opendigitalradio/ODR-DabMod.git
# or development version (at your own risk):
git clone https://github.com/Opendigitalradio/ODR-DabMod.git -b next
```
1. Configure the project
```
cd ODR-DabMod
./bootstrap
./configure
```
1. Compile and install:
```
make
sudo make install
```
### Configure options
The configure script can be launched with a variety of options:
- Disable ZeroMQ input (to be used with ODR-DabMod), output and remotecontrol: `--disable-zeromq`
- Disable the binding to the UHD driver for USRPs: `--disable-output-uhd`
- Compile using the `-ffast-math` option that gives a substantial speedup at the cost of floating point correctness: `--enable-fast-math`
- Do not pass `-march=native` to the compiler by using the argument: `--disable-native`
**Remark:** Do not compile ODR-DabMod with `-march=native` compiler option. This is meant for distribution package maintainers who want to use their own march option, and for people running into compilation issues due to `-march=native`. (e.g. GCC bug 70132 on ARM systems)
**Debugging options:** You should not enable any debug option if you need good performance.
Create debugging files for each DSP block for data analysis: `--enable-trace`
For more information, call:
```
./configure --help
```
#### Performance optimisation
While the performance of modern systems is good enough in most cases to
run ODR-DabMod, it is sometimes necessary to increase the compilation
optimisation if all features are used or on slow systems.
Tricks for best performance:
* Do not use `--disable-native`
* Use `--enable-fast-math`
* Add `-O3` to compiler flags
* Disable assertions with `-DNDEBUG`
Applying all together:
```
./configure CFLAGS="-O3 -DNDEBUG" CXXFLAGS="-O3 -DNDEBUG" --enable-fast-math
```
#### Checking for memory usage issues
If your compiler supports it, you can enable the address sanitizer to check for memory
issues:
```
./configure CFLAGS="-fsanitize=address -g -O2" CXXFLAGS="-fsanitize=address -g -O2"
```
The resulting binary will be instrumented with additional memory checks, which have a
measurable overhead. Please report if you get warnings or errors when using the sanitizer.
## SoapySDR support and required dependencies
SoapySDR is a vendor-neutral library to drive SDR devices. It can be used to
drive the HackRF and the LimeSDR among others.
Required dependencies that need to be installed are, in order:
1. SoapySDR itself from https://github.com/pothosware/SoapySDR
1. The LimeSuite for the LimeSDR from https://github.com/myriadrf/LimeSuite
1. HackRF support for SoapySDR from https://github.com/pothosware/SoapyHackRF
ODR-DabMod will automatically recognise if the SoapySDR library is installed on
your system, and will print at the end of `./configure` if support is enabled or
not.
A configuration example is available in `doc/example.ini`
## BladeRF support
In order to use `--enable-bladerf`, you need to install the `libbladerf2` including the -dev package.
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