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etcd is a distributed, consistent key-value store for shared configuration and service discovery, part of the CoreOS project.

This repository provides a library for etcd for C applications. It uses the v2 (REST) api of etcd.

Etcdlib can be used as part of Celix but is also usable stand-alone.


The following packages (libraries + headers) should be installed on your system:

  • Development Environment

    • build-essentials (gcc/g++ or clang/clang++)
    • cmake (3.2 or higher)
  • Etcdlib Dependencies

    • curl
    • jansson

Download the Apache Celix sources

To get started you first have to download the Apache Celix sources. This can be done by cloning the Apache Celix git repository:

# Create a new workspace to work in, e.g:
mkdir -p ${HOME}/workspace
export WS=${HOME}/workspace
cd ${WS}

# clone the repro
git clone --single-branch --branch develop


Etcdlib uses CMake as build system. CMake can generate (among others) makefiles or ninja build files. Using ninja build files will result in a faster build.

Building using CMake and makefiles:

cd ${WS}/celix/etcdlib
mkdir build
cd build
cmake .. 

Building using CMake and Ninja

cd ${WS}/celix/etcdlib
mkdir build
cd build
cmake -G Ninja ..

Editing Build options

With use of CMake, Etcdlib makes it possible to edit build options. This enabled users, among other options, to configure a install location. To edit the options use ccmake or cmake-gui. For cmake-gui an additional package install can be necessary (Fedora: dnf install cmake-gui).

cd ${WS}/celix/etcdlib/build
ccmake .
# Edit the CMAKE_INSTALL_PREFIX config to set the install location

For this guide we assume the CMAKE_INSTALL_PREFIX is /usr/local.

Installing Etcdlib

cd ${WS}/celix/etcdlib/build
sudo make install