Introduction to BlueZ

The BlueZ package contains the Bluetooth protocol stack for Linux.

This package is known to build and work properly using an LFS 12.1 platform.

Package Information

BlueZ Dependencies


dbus-1.14.10, GLib-2.78.4, and libical-3.0.17


docutils-0.20.1 (to generate man pages)

Kernel Configuration

If you are building this package to use bluetooth devices (rather than as a build dependency), enable the following options in the kernel configuration, also the options in the Cryptographic API section if you intend to run the tests, and recompile the kernel if necessary:

General setup --->
  # If it is disabled, [TIMERFD] and [EVENTFD] will be hidden and
  # enabled implicitly.  We DO NOT recommend to enable [EXPERT]
  # unless you are really an expert user:
  [ /*] Configure standard kernel features (expert users) --->          [EXPERT]
    [*] Enable timerfd() system call                                   [TIMERFD]
    [*] Enable eventfd() system call                                   [EVENTFD]

[*] Networking support --->                                                [NET]
  <*/M> Bluetooth subsystem support --->                                    [BT]
    [*]   Bluetooth Classic (BR/EDR) features                         [BT_BREDR]
    <*/M>   RFCOMM protocol support                                  [BT_RFCOMM]
    [*]       RFCOMM TTY support                                 [BT_RFCOMM_TTY]
    <*/M>   BNEP protocol support                                      [BT_BNEP]
    [*]       Multicast filter support                       [BT_BNEP_MC_FILTER]
    [*]       Protocol filter support                     [BT_BNEP_PROTO_FILTER]
    <*/M>   HIDP protocol support                                      [BT_HIDP]
    Bluetooth device drivers --->
      # Select the appropriate drivers for your bluetooth hardware.
      # There are more vendor-specific drivers not listed here:
      < /*/M> HCI USB driver                                       [BT_HCIBTUSB]
      < /*/M> HCI SDIO driver                                     [BT_HCIBTSDIO]
      < /*/M> HCI UART driver                                       [BT_HCIUART]
  <*/M> RF switch subsystem support --->                                [RFKILL]

-*- Cryptographic API --->                                              [CRYPTO]
  Crypto core or helper --->
    <*/M> Userspace cryptographic algorithm configuration          [CRYPTO_USER]
  Block ciphers --->
    <*/M> AES (Advanced Encryption Standard)                        [CRYPTO_AES]
  AEAD (authenticated encryption with associated data) ciphers --->
    <*/M> CCM (Counter with Cipher Block Chaining-MAC)              [CRYPTO_CCM]
  Hashes, digests, and MACs --->
    <*/M> CMAC (Cipher-based MAC)                                  [CRYPTO_CMAC]
  Userspace interface --->
    <*/M> Hash algorithms                                 [CRYPTO_USER_API_HASH]
    <*/M> Symmetric key cipher algorithms             [CRYPTO_USER_API_SKCIPHER]
    <*/M> AEAD cipher algorithms                          [CRYPTO_USER_API_AEAD]

Installation of BlueZ

Install BlueZ by running the following commands:

./configure --prefix=/usr         \
            --sysconfdir=/etc     \
            --localstatedir=/var  \
            --disable-manpages    \
            --enable-library      &&

To test the results, issue: make check.

Now, as the root user:

make install &&
ln -svf ../libexec/bluetooth/bluetoothd /usr/sbin

Install the main configuration file as the root user:

install -v -dm755 /etc/bluetooth &&
install -v -m644 src/main.conf /etc/bluetooth/main.conf

If desired, install the API documentation as the root user:

install -v -dm755 /usr/share/doc/bluez-5.72 &&
install -v -m644 doc/*.txt /usr/share/doc/bluez-5.72

Command Explanations

--disable-manpages: This switch disables generating the manual pages because of the reliance on 'rst2man' in docutils. Remove this switch if you have docutils-0.20.1 installed and wish to generate the manual pages.

--enable-library: This switch enables building the BlueZ 4 compatibility library which is required by some applications.

ln -svf ../libexec/bluetooth/bluetoothd /usr/sbin: This command makes access to the bluetooth daemon more convenient.

Configuring BlueZ

Configuration Files

/etc/bluetooth/main.conf is installed automatically during the installation. Additionally, there are two supplementary configuration files. You can optionally install the following files as the root user:

cat > /etc/bluetooth/rfcomm.conf << "EOF"
# Start rfcomm.conf
# Set up the RFCOMM configuration of the Bluetooth subsystem in the Linux kernel.
# Use one line per command
# See the rfcomm man page for options

# End of rfcomm.conf
cat > /etc/bluetooth/uart.conf << "EOF"
# Start uart.conf
# Attach serial devices via UART HCI to BlueZ stack
# Use one line per device
# See the hciattach man page for options

# End of uart.conf

Systemd Bluez Services

To start the bluetoothd daemon at boot, enable the previously installed systemd unit by running the following command as the root user:

systemctl enable bluetooth

To start the obexd daemon for a user session (to support some Bluetooth programs using it), enable the previously installed systemd unit for all users by running the following command as the root user:

systemctl enable --global obex


Systemd will start the Bluetooth daemon only when a bluetooth device is detected on the system.


Installed Programs: bluemoon, bluetoothctl, bluetoothd (symlink), btattach, btmon, hex2hcd, l2ping, l2test, mpris-proxy, and rctest
Installed Library:
Installed Directories: /etc/bluetooth, /usr/{include,libexec}/bluetooth, and /usr/share/doc/bluez-5.72

Short Descriptions


is a Bluemoon configuration utility


is the interactive Bluetooth control program


is the Bluetooth daemon


provides access to the Bluetooth subsystem monitor infrastructure for reading HCI traces


is used to convert a file needed by Broadcom devices to hcd (Broadcom bluetooth firmware) format


is used to send a L2CAP echo request to the Bluetooth MAC address given in dotted hex notation


is a L2CAP testing program


is used to test RFCOMM communications on the Bluetooth stack

contains the BlueZ 4 API functions