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MQTT kdb+ library installation

Requirements

  • kdb+ ≥ 3.5 64-bit(Linux/MacOS/Windows) and 32-bit ARM
  • paho.mqtt.c >= 1.3.11
  • CMake ≥ 3.1 1

Installing a release

  1. Ensure MQTT C API (paho.mqtt.c) is installed.

  2. Make the MQTT library available from kdb+:

    • Linux: Add the lib directory, which includes include and lib to the LD_LIBRARY_PATH environment variable e.g. if unzipped to /usr/local/Eclipse-Paho-MQTT-C/, run:

      export LD_LIBRARY_PATH=/usr/local/Eclipse-Paho-MQTT-C/lib/:$LD_LIBRARY_PATH

    • macOS: Add the lib directory, which includes include and libto the DYLD_LIBRARY_PATH environment variable e.g. if unzipped to /Users/jim/eclipse-paho-mqtt-c/, run:

      export DYLD_LIBRARY_PATH=/Users/jim/Eclipse-Paho-MQTT-C/lib/:$DYLD_LIBRARY_PATH

    • Windows: Add paho-mqtt3c.dll and paho-mqtt3cs.dll to the kdb+ directory e.g. C:\q\w64 for 64-bit.

  3. Download the latest release of the MQTT interface from our releases page. To install shared library and q files, use:

    # Linux/MacOS
./install.sh

# Windows
install.bat

    or copy mqtt.q to QHOME, then copy mqttkdb.so or mqttkdb.dll into QHOME/[l|m|w]64

Footnotes

  1. Required when building from source ↩