# Installation

You have 2 ways to install odr-dabmod on your host:

## Installing binary packages on some linux distributions

[![Packaging status](https://repology.org/badge/vertical-allrepos/odr-dabmod.svg)](https://repology.org/project/odr-dabmod/versions)

**Notice**: this package does not include the web-based GUI and Digital Predistortion Computation engine

## Compiling manually

Unlike the previous option, this one allows you to compile odr-dabmod with the features you really need.

### Dependencies

#### Debian Bullseye-based OS

```sh
# 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

## 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:

   ```sh
   # 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

   ```sh
   cd ODR-DabMod
   ./bootstrap.sh
   ./configure
   ```

1. Compile and install:

   ```sh
   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:

```sh
./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:

```sh
./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:

```sh
./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.