Compilation error when enabling the bluetooth (CONFIG_BT=y)

RE: Compilation error when enabling the bluetooth (CONFIG_BT=y)

dejans — Fri, 05 Dec 2025 15:06:58 GMT

Hi,

It is great to know that your problem has been fixed. Thank you for the update.

Best regards,
Dejan

RE: Compilation error when enabling the bluetooth (CONFIG_BT=y)

bayarn — Fri, 05 Dec 2025 13:26:16 GMT

Hi,

The build error in my program is due to the undeclared CONFIG_BT_CTRL.

Indeed, the Kconfig.defconfig file of my board was not created and then the config below was not declared to enable the SoC native Bluetooth LE controller :

config BT_CTLR

default BT

After correction, the program with the custom board DTS has its build complete when CONFIG_BT=y and CONFIG_BT_PERIPHERAL=y.

Thank your very much for your time.

Best regards,

RE: Compilation error when enabling the bluetooth (CONFIG_BT=y)

bayarn — Thu, 04 Dec 2025 19:03:37 GMT

Hello,

I use a custom board with its devicetree.

For the build log, I don't know how to generate it. I'm not familiar with VS code.

Furthermore, I've tried to build my program with a nRF52840DK overlay DTS by integrating all HW configuration of my custom board in it. The result is different with build complete.

By checking the generated autoconf.h file for this later, some config are present like :

#define CONFIG_BT_HCI_VS 1

#define CONFIG_BT_CTLR 1

#define CONFIG_BT_LL_SOFTDEVICE 1

#define CONFIG_BT_HAS_HCI_VS 1

#define CONFIG_MPSL 1

And others ....

Perhaps, I've omitted some config with the custom board. I don't know.

Best regards,

RE: Compilation error when enabling the bluetooth (CONFIG_BT=y)

dejans — Mon, 01 Dec 2025 09:48:31 GMT

Hi,

Which code sample have you used?

Can you upload your complete build log?

Best regards,
Dejan

RE: Compilation error when enabling the bluetooth (CONFIG_BT=y)

bayarn — Fri, 28 Nov 2025 17:23:11 GMT

Hi Dejan,

Thanks for your response.

Indeed, after verification in devicetree_generated.h, this DTS node ID concerns the bt_hci_sdc module that is used when the bluetooth is activated.
So, I don't know why this error occured knowing that the build is complete for other code sample with BLE.

I have the following configurations if it helps :

CONFIG_GPIO=y

CONFIG_PM_DEVICE=y

CONFIG_REQUIRES_FULL_LIBC=y

CONFIG_REQUIRES_FLOAT_PRINTF=y

CONFIG_CMSIS_DSP=y

CONFIG_CMSIS_DSP_FILTERING=y

CONFIG_MAIN_STACK_SIZE=8192

CONFIG_FLASH=y

CONFIG_MPU_ALLOW_FLASH_WRITE=y

CONFIG_FCB=y

CONFIG_FLASH_MAP=y

CONFIG_SETTINGS=y

CONFIG_SETTINGS_FCB=y

CONFIG_EVENTS=y

CONFIG_BT=y

CONFIG_BT_PERIPHERAL=y

CONFIG_BT_BAS=y

CONFIG_BT_SMP=y

CONFIG_BT_DEVICE_NAME="My Device"

Best regards,

RE: Compilation error when enabling the bluetooth (CONFIG_BT=y)

dejans — Fri, 28 Nov 2025 12:23:45 GMT

Hi,

[quote user=""]./../arm-zephyr-eabi/bin/ld.bfd.exe: zephyr/subsys/bluetooth/host/libsubsys__bluetooth__host.a(
hci_core.c.obj):(.data.bt_dev+0x16c): undefined reference to `__device_dts_ord_98'[/quote]

This error might be devicetree problem for which there are some troubleshooting options.

Best regards,
Dejan