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Linux BlueZ Library and Utilities

what is BlueZ?

The overall goal of this project is to make an implementation of the Bluetoothâ„¢ wireless standards specifications for Linux. The code is licensed under the GNU General Public License (GPL) and is now included in the Linux 2.4 and Linux 2.6 kernel series.


The Bluetooth wireless technology is a worldwide specification for a small-form factor, low-cost radio solution that provides links between mobile computers, mobile phones, other portable handheld devices, and connectivity to the Internet. The specification is developed, published and promoted by the Bluetooth Special Interest Group (SIG).


BlueZ provides support for the core Bluetooth layers and protocols. It is flexible, efficient and uses a modular implementation. It has many interesting features:

  • Complete modular implementation
  • Symmetric multi processing safe
  • Multithreaded data processing
  • Support for multiple Bluetooth devices
  • Real hardware abstraction
  • Standard socket interface to all layers
  • Device and service level security support

Currently BlueZ consists of many separate modules:

  • Bluetooth kernel subsystem core
  • L2CAP and SCO audio kernel layers
  • RFCOMM, BNEP, CMTP and HIDP kernel implementations
  • HCI UART, USB, PCMCIA and virtual device drivers
  • General Bluetooth and SDP libraries and daemons
  • Configuration and testing utilities
  • Protocol decoding and analysis tools

(taken from

Compiling BlueZ Library and Utilities

Both the BlueZ library and Utilities are integrated into the Blackfin uClinux distribution.

You can find the BlueZ library in the vendor configuration menu:

Library Configuration  --->
  [*] Build bluez-lib

You can also find the BlueZ utilities in the vendor configuration menu:

Blackfin app programs  --->
  [*] Bluez-utils

The libraries/utilities will be automatically placed into the romfs image, and you can access the library externally like the other existing libraries integrated into the staging directory.