Hello,

I'm trying to add a2dp support (ie. sound over bluetooth) to my target.

A2DP support can be achieved using bluez5 and pulseaudio.

Pulseaudio only build bluetooth related modules if both BR2_PACKAGE_BLUEZ5 and BR2_PACKAGE_SBC are enabled and compiled before the configure step of the pulseaudio package.

Current pulseaudio.mk file contains the following entry :
PULSEAUDIO_DEPENDENCIES= .... $(if $(BR2_PACKAGE_BLUEZ5_UTILS),bluez5_utils) ...

But no corresponding entry for SBC (e.g. $(if $(BR2_PACKAGE_SBC),sbc)).

So sbc might not be available when configuring pulseaudio and consequently no bluetooth related modules get built :
...
    Enable D-Bus:                  yes
      Enable BlueZ 4:              no
      Enable BlueZ 5:              no
        Enable ofono headsets:     no
        Enable native headsets:    no
...

Regards.