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cpp-mqtt.md

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C++ additional setup

Updating the MQTT* C client library

Updating the MQTT* C client library on the Intel® Edison board

To use MQTT* with the how-to code examples, you need to update the Paho* MQTT* C client libraries on the Intel® Edison board. To do this:

  1. Establish an SSH connection to your Intel® Edison board, and then run the following commands from the board:

     opkg install coreutils
 opkg remove paho-mqtt-dev
 opkg remove paho-mqtt --force-depends
 git clone https://github.com/eclipse/paho.mqtt.c.git
 cd paho.mqtt.c
 export prefix=/usr; make install

  2. Log out from the SSH session using the exit command.

Updating the MQTT* C client library on the Intel® IoT Gateway.

To use MQTT* with the how-to code examples, you need to update the Paho* MQTT* C client libraries on the Intel® IoT Gateway. To do this:

  1. Establish an SSH connection to your Intel® IoT Gateway, and then run the following commands from the gateway:

     smart install openssl-dev
 git clone https://github.com/eclipse/paho.mqtt.c.git
 cd paho.mqtt.c
 export prefix=/usr; make install

  2. Log out from the SSH session using the exit command.

Updating the MQTT* C client library in Intel® System Studio.

  1. First, connect to the Docker* container that corresponds to the target platform you would like to build for. Determine the container ID by listing all of the current containers using the docker ps command. You should see output like the following:
CONTAINER ID        IMAGE                                    COMMAND             CREATED             STATUS              PORTS                   NAMES
56d3928f0a67        inteliotdevkit/intel-iot-wrs-64:latest   "bash"              5 days ago          Up 33 minutes       0.0.0.0:32771->22/tcp   intel-iot-wrs-64-workspace-iot1-160081000
4b91ecd3d1ad        inteliotdevkit/intel-iot-yocto:latest    "/bin/bash"         5 weeks ago         Up 2 days           0.0.0.0:32769->22/tcp   intel-iot-yocto-workspace-iot1-160081000
\

in this case, let's assume we want to connect to the inteliotdevkit/intel-iot-wrs-64:latest container. The Container ID for this container is 56d3928f0a67. Attach to it as follows:

    docker exec -t -i 56d3928f0a67 /bin/bash

This should bring up the bash prompt on the running container.

  1. Now you should be able to run the following commands within the container:

     git clone https://github.com/eclipse/paho.mqtt.c.git
 cd paho.mqtt.c
 export prefix=/usr; make install

  2. Once these commands have completed with the installation, you can exit the container by running the exit command.

Updating the Websocketpp* library

Updating the Websocketpp* library on the Intel® Edison board

  1. Establish an SSH connection to your Intel® Edison board, and then run the following commands from the board:

     cd ~
 git clone https://github.com/zaphoyd/websocketpp.git
 cd websocketpp
 cmake .
 make install

Updating the Websocketpp* library on the Intel® IoT Gateway.

  1. First, check to see if you have CMake* installed:

     cmake --version

If CMake is already installed, you can skip to the next step.

If you receive an error message, it means you need to install CMake. Run the following commands:

    cd ~
    wget https://cmake.org/files/v2.8/cmake-2.8.12.tar.gz
    tar -zxvf cmake-2.8.12.tar.gz
    cd cmake-2.8.12
    ./bootstrap
    make
    make install

  1. Now, install Websocketpp* by running the following commands:

     cd ~
 git clone https://github.com/zaphoyd/websocketpp.git
 cd websocketpp
 cmake .
 make install

Updating the Websocketpp* library in Intel® System Studio.

  1. First, connect to the Docker* container that corresponds to the target platform you would like to build for. Determine the container ID by listing all of the current containers using the docker ps command. You should see output like the following:
CONTAINER ID        IMAGE                                    COMMAND             CREATED             STATUS              PORTS                   NAMES
56d3928f0a67        inteliotdevkit/intel-iot-wrs-64:latest   "bash"              5 days ago          Up 33 minutes       0.0.0.0:32771->22/tcp   intel-iot-wrs-64-workspace-iot1-160081000
4b91ecd3d1ad        inteliotdevkit/intel-iot-yocto:latest    "/bin/bash"         5 weeks ago         Up 2 days           0.0.0.0:32769->22/tcp   intel-iot-yocto-workspace-iot1-160081000
\

in this case, let's assume we want to connect to the inteliotdevkit/intel-iot-wrs-64:latest container. The Container ID for this container is 56d3928f0a67. Attach to it as follows:

    docker exec -t -i 56d3928f0a67 /bin/bash

This should bring up the bash prompt so you can run commands within the container.

  1. First, check to see if you have CMake* installed:

     cmake --version

If CMake is already installed, you can skip to the next step.

If you receive an error message, it means you need to install CMake. Run the following commands:

    cd ~
    wget https://cmake.org/files/v2.8/cmake-2.8.12.tar.gz
    tar -zxvf cmake-2.8.12.tar.gz
    cd cmake-2.8.12
    ./bootstrap
    make
    make install

  1. Now, install Websocketpp* by running the following commands:

     cd ~
 git clone https://github.com/zaphoyd/websocketpp.git
 cd websocketpp
 cmake .
 make install