Introduction to BlueZ

The BlueZ package contains the Bluetooth protocol stack for Linux.



Development versions of BLFS may not build or run some packages properly if dependencies have been updated since the most recent stable versions of the book.

Package Information

Additional Downloads

BlueZ Dependencies


dbus-1.14.4, GLib-2.74.5, and libical-3.0.16


docutils-0.19 (to generate man pages)

User Notes:

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 below the next paragraph if you intend to run the tests, and recompile the kernel if necessary:

General Setup --->
  [*] Configure standard kernel features (expert users)               [CONFIG_EXPERT]
    [*] Enable timerfd() system call               [CONFIG_TIMERFD]
    [*] Enable eventfd() system call               [CONFIG_EVENTFD]

[*] Networking support --->                [CONFIG_NET]
  <*/M> Bluetooth subsystem support --->    [CONFIG_BT]
    <*/M> RFCOMM protocol support          [CONFIG_BT_RFCOMM]
    [*]   RFCOMM TTY support               [CONFIG_BT_RFCOMM_TTY]
    <*/M> BNEP protocol support            [CONFIG_BT_BNEP]
    [*]   Multicast filter support         [CONFIG_BT_BNEP_MC_FILTER]
    [*]   Protocol filter support          [CONFIG_BT_BNEP_PROTO_FILTER]
    <*/M> HIDP protocol support            [CONFIG_BT_HIDP]
        Bluetooth device drivers --->
          (Select the appropriate drivers for your Bluetooth hardware)

   <*/M> RF switch subsystem support ----   [CONFIG_RFKILL]

-*- Cryptographic API --->
   <*/M*> User-space cryptographic algorithm configuration         [CONFIG_CRYPTO_USER]
   <*/M*> User-space interface for hash algorithms                 [CONFIG_CRYPTO_USER_API_HASH]
   <*/M*> User-space interface for symmetric key cipher algorithms [CONFIG_CRYPTO_USER_API_SKCIPHER]
   <*/M*> MD5 digest algorithm                                     [CONFIG_CRYPTO_MD5]
   <*/M*> SHA1 digest algorithm                                    [CONFIG_CRYPTO_SHA1]

Security Options --->
  <*/M*> Diffie-Hellman operations on retained keys [CONFIG_KEY_DH_OPERATIONS]

Installation of BlueZ

Now, make some changes needed for SystemV systems:

patch -Np1 -i ../bluez-5.66-obexd_without_systemd-1.patch

Install BlueZ by running the following commands:

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

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-5.66 &&
install -v -m644 doc/*.txt /usr/share/doc/bluez-5.66

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-0.19 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.

--disable-systemd: This switch is needed because systemd is not part of LFS/BLFS. If you are using systemd, remove this switch.

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 install. Additionally, there are three supplementary configuration files. /etc/sysconfig/bluetooth is installed as a part of the boot script below. In addition, you optionally can install the following, 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

Boot Script

To automatically start the bluetoothd daemon when the system is rebooted, install the /etc/rc.d/init.d/bluetooth bootscript from the blfs-bootscripts-20230101 package.

make install-bluetooth


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-5.66

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