Compilation error when enabling the bluetooth (CONFIG_BT=y)

Question

Hello, 
 
 I use NCS 2.8.0 and toolchain 2.8.0 for my build. Also, the boad is a custom board with NRF52840. 
 My zephyr application is structured as show in this link : https://github.com/nrfconnect/ncs-example-application 
 My problem is that the program cannot be built when CONFIG_BT=y. 
 The following errors occur at the end of the compilation : 
 [220/225] Linking C executable zephyr\zephyr_pre0.elf FAILED: zephyr/zephyr_pre0.elf zephyr/zephyr_pre0.map .... 
 ............ 
 ./../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' 
 collect2.exe: error: ld returned 1 exit status ninja: build stopped: subcommand failed. 
 Thank you for your help. 
 Best regards,

bayarn · Accepted Answer

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,

Compilation error when enabling the bluetooth (CONFIG_BT=y)

Top Replies