1. Linux installation from sources¶

The instructions for installing the eProsima Fast DDS Statistics Backend from sources are provided in this page. It is organized as follows:

Fast DDS Statistics Backend installation

1.1. Fast DDS Statistics Backend installation¶

This section describes the instructions for installing eProsima Fast DDS Statistics Backend in a Linux environment from sources. First of all, the Requirements and Dependencies detailed below need to be met. Afterwards, the user can choose whether to follow either the colcon or the CMake installation instructions.

1.1.1. Requirements¶

The installation of eProsima Fast DDS Statistics Backend in a Linux environment from sources requires the following tools to be installed in the system:

CMake, g++, pip3, wget and git
Gtest [optional]

1.1.1.1. CMake, g++, pip3, wget and git¶

These packages provide the tools required to install eProsima Fast DDS Statistics Backend and its dependencies from command line. Install CMake, g++, pip3, wget and git using the package manager of the appropriate Linux distribution. For example, on Ubuntu use the command:

sudo apt install cmake g++ python3-pip wget git

1.1.1.2. Gtest¶

Gtest is a unit testing library for C++. By default, eProsima Fast DDS Statistics Backend does not compile tests. It is possible to activate them with the opportune CMake configuration options when calling colcon or CMake. For more details, please refer to the CMake options section. For a detailed description of the Gtest installation process, please refer to the Gtest Installation Guide.

Note

eProsima Fast DDS Statistics Backend depends on Gtest release-1.10.0 or later.

1.1.2. Dependencies¶

eProsima Fast DDS Statistics Backend has the following dependencies in a Linux environment:

eProsima Fast DDS

1.1.2.1. eProsima Fast DDS¶

Please, refer to the eProsima Fast DDS installation documentation to learn the installing procedure

1.1.3. Colcon installation¶

colcon is a command line tool based on CMake aimed at building sets of software packages. This section explains how to use it to compile eProsima Fast DDS Statistics Backend and its dependencies.

Install the ROS 2 development tools (colcon and vcstool) by executing the following command:
```
pip3 install -U colcon-common-extensions vcstool
```
Note

If this fails due to an Environment Error, add the --user flag to the pip3 installation command.

Create a Fast-DDS-statistics-backend directory and download the repos file that will be used to install eProsima Fast DDS Statistics Backend and its dependencies:

mkdir ~/Fast-DDS-statistics-backend
cd ~/Fast-DDS-statistics-backend
wget https://raw.githubusercontent.com/eProsima/Fast-DDS-statistics-backend/master/fastdds_statistics_backend.repos
mkdir src
vcs import src < fastdds_statistics_backend.repos

Build the packages:
```
colcon build
```

Note

Being based on CMake, it is possible to pass the CMake configuration options to the colcon build command. For more information on the specific syntax, please refer to the CMake specific arguments page of the colcon manual.

Instead of passing CMake configuration options on the CLI, it is also possible to use a colcon.meta file to set the configuration. The eProsima Fast DDS Statistics Backend repository already includes a colcon.meta file with the default configuration, which can be tuned by the user.

1.1.4. CMake installation¶

This section explains how to compile eProsima Fast DDS Statistics Backend with CMake, either locally or globally.

1.1.4.1. Local installation¶

Follow the eProsima Fast DDS local installation guide to install eProsmia Fast DDS and all its dependencies

Install eProsima Fast DDS Statistics Backend:

cd ~/Fast-DDS
git clone https://github.com/eProsima/Fast-DDS-statistics-backend.git
mkdir Fast-DDS-statistics-backend/build
cd Fast-DDS-statistics-backend/build
cmake ..  -DCMAKE_INSTALL_PREFIX=~/Fast-DDS/install -DCMAKE_PREFIX_PATH=~/Fast-DDS/install
sudo cmake --build . --target install

Note

By default, eProsima Fast DDS Statistics Backend does not compile tests. However, they can be activated by downloading and installing Gtest, and enabling the corresponding cmake option.

1.1.4.2. Global installation¶

Follow the eProsima Fast DDS global installation guide to install eProsmia Fast DDS and all its dependencies

Install eProsima Fast DDS Statistics Backend:

cd ~/Fast-DDS
git clone https://github.com/eProsima/Fast-DDS-statistics-backend.git
mkdir Fast-DDS-statistics-backend/build
cd Fast-DDS-statistics-backend/build
cmake ..
cmake --build . --target install

1.1.4.3. Run an application¶

When running an instance of an application using eProsima Fast DDS Statistics Backend, it must be linked with the library where the packages have been installed, which in the case of system-wide installation is: /usr/local/lib/ (if local installation is used, adjust for the correct directory). There are two possibilities:

Prepare the environment locally by typing the command:
```
export LD_LIBRARY_PATH=/usr/local/lib/
```

Add it permanently it to the PATH, by typing:

echo 'export LD_LIBRARY_PATH=/usr/local/lib/' >> ~/.bashrc