Build errors in COAP client/server apps

[kaushalyasat]

Hi, I am getting this strange error when building these apps.

[817/827] Linking CXX executable zephyr\zephyr_pre0.elf
FAILED: zephyr/zephyr_pre0.elf zephyr/zephyr_pre0.map
cmd.exe /C "cd . && C:\ncs\toolchains\v2.0.0\opt\zephyr-sdk\arm-zephyr-eabi\bin\arm-zephyr-eabi-g++.exe @CMakeFiles\zephyr_pre0.rsp -o zephyr\zephyr_pre0.elf && cmd.exe /C "cd /D C:\nrfwork\coap_client\build\zephyr && C:\ncs\toolchains\v2.0.0\opt\bin\cmake.exe -E echo ""
c:/ncs/toolchains/v2.0.0/opt/zephyr-sdk/arm-zephyr-eabi/bin/../lib/gcc/arm-zephyr-eabi/10.3.0/../../../../arm-zephyr-eabi/bin/ld.exe: modules/openthread/build/src/core/libopenthread-mtd.a(factory_diags.cpp.obj): in function `ot::FactoryDiags::Diags::ProcessStats(unsigned char, char**, char*, unsigned int)':
C:\ncs\v2.0.0\modules\lib\openthread\src\core\diags\factory_diags.cpp:356: undefined reference to `otPlatDiagModeGet'
c:/ncs/toolchains/v2.0.0/opt/zephyr-sdk/arm-zephyr-eabi/bin/../lib/gcc/arm-zephyr-eabi/10.3.0/../../../../arm-zephyr-eabi/bin/ld.exe: modules/openthread/build/src/core/libopenthread-mtd.a(factory_diags.cpp.obj): in function `ot::FactoryDiags::Diags::ProcessStop(unsigned char, char**, char*, unsigned int)':
C:\ncs\v2.0.0\modules\lib\openthread\src\core\diags\factory_diags.cpp:387: undefined reference to `otPlatDiagModeGet'
c:/ncs/toolchains/v2.0.0/opt/zephyr-sdk/arm-zephyr-eabi/bin/../lib/gcc/arm-zephyr-eabi/10.3.0/../../../../arm-zephyr-eabi/bin/ld.exe: C:\ncs\v2.0.0\modules\lib\openthread\src\core\diags\factory_diags.cpp:390: undefined reference to `otPlatDiagModeSet'
c:/ncs/toolchains/v2.0.0/opt/zephyr-sdk/arm-zephyr-eabi/bin/../lib/gcc/arm-zephyr-eabi/10.3.0/../../../../arm-zephyr-eabi/bin/ld.exe: modules/openthread/build/src/core/libopenthread-mtd.a(factory_diags.cpp.obj): in function `ot::FactoryDiags::Diags::ProcessRadio(unsigned char, char**, char*, unsigned int)':
C:\ncs\v2.0.0\modules\lib\openthread\src\core\diags\factory_diags.cpp:425: undefined reference to `otPlatDiagModeGet'
c:/ncs/toolchains/v2.0.0/opt/zephyr-sdk/arm-zephyr-eabi/bin/../lib/gcc/arm-zephyr-eabi/10.3.0/../../../../arm-zephyr-eabi/bin/ld.exe: C:\ncs\v2.0.0\modules\lib\openthread\src\core\diags\factory_diags.cpp:437: undefined reference to `otPlatDiagChannelSet'
c:/ncs/toolchains/v2.0.0/opt/zephyr-sdk/arm-zephyr-eabi/bin/../lib/gcc/arm-zephyr-eabi/10.3.0/../../../../arm-zephyr-eabi/bin/ld.exe: C:\ncs\v2.0.0\modules\lib\openthread\src\core\diags\factory_diags.cpp:438: undefined reference to `otPlatDiagTxPowerSet'
c:/ncs/toolchains/v2.0.0/opt/zephyr-sdk/arm-zephyr-eabi/bin/../lib/gcc/arm-zephyr-eabi/10.3.0/../../../../arm-zephyr-eabi/bin/ld.exe: modules/openthread/build/src/core/libopenthread-mtd.a(factory_diags.cpp.obj): in function `ot::FactoryDiags::Diags::ProcessStart(unsigned char, char**, char*, unsigned int)':
C:\ncs\v2.0.0\modules\lib\openthread\src\core\diags\factory_diags.cpp:335: undefined reference to `otPlatDiagChannelSet'
c:/ncs/toolchains/v2.0.0/opt/zephyr-sdk/arm-zephyr-eabi/bin/../lib/gcc/arm-zephyr-eabi/10.3.0/../../../../arm-zephyr-eabi/bin/ld.exe: C:\ncs\v2.0.0\modules\lib\openthread\src\core\diags\factory_diags.cpp:336: undefined reference to `otPlatDiagTxPowerSet'
c:/ncs/toolchains/v2.0.0/opt/zephyr-sdk/arm-zephyr-eabi/bin/../lib/gcc/arm-zephyr-eabi/10.3.0/../../../../arm-zephyr-eabi/bin/ld.exe: C:\ncs\v2.0.0\modules\lib\openthread\src\core\diags\factory_diags.cpp:343: undefined reference to `otPlatDiagModeSet'
c:/ncs/toolchains/v2.0.0/opt/zephyr-sdk/arm-zephyr-eabi/bin/../lib/gcc/arm-zephyr-eabi/10.3.0/../../../../arm-zephyr-eabi/bin/ld.exe: modules/openthread/build/src/core/libopenthread-mtd.a(factory_diags.cpp.obj): in function `ot::FactoryDiags::Diags::ProcessRepeat(unsigned char, char**, char*, unsigned int)':
C:\ncs\v2.0.0\modules\lib\openthread\src\core\diags\factory_diags.cpp:264: undefined reference to `otPlatDiagModeGet'
c:/ncs/toolchains/v2.0.0/opt/zephyr-sdk/arm-zephyr-eabi/bin/../lib/gcc/arm-zephyr-eabi/10.3.0/../../../../arm-zephyr-eabi/bin/ld.exe: modules/openthread/build/src/core/libopenthread-mtd.a(factory_diags.cpp.obj): in function `ot::FactoryDiags::Diags::ProcessChannel(unsigned char, char**, char*, unsigned int)':
C:\ncs\v2.0.0\modules\lib\openthread\src\core\diags\factory_diags.cpp:207: undefined reference to `otPlatDiagModeGet'
c:/ncs/toolchains/v2.0.0/opt/zephyr-sdk/arm-zephyr-eabi/bin/../lib/gcc/arm-zephyr-eabi/10.3.0/../../../../arm-zephyr-eabi/bin/ld.exe: C:\ncs\v2.0.0\modules\lib\openthread\src\core\diags\factory_diags.cpp:222: undefined reference to `otPlatDiagChannelSet'
c:/ncs/toolchains/v2.0.0/opt/zephyr-sdk/arm-zephyr-eabi/bin/../lib/gcc/arm-zephyr-eabi/10.3.0/../../../../arm-zephyr-eabi/bin/ld.exe: modules/openthread/build/src/core/libopenthread-mtd.a(factory_diags.cpp.obj): in function `ot::FactoryDiags::Diags::ProcessPower(unsigned char, char**, char*, unsigned int)':
C:\ncs\v2.0.0\modules\lib\openthread\src\core\diags\factory_diags.cpp:236: undefined reference to `otPlatDiagModeGet'
c:/ncs/toolchains/v2.0.0/opt/zephyr-sdk/arm-zephyr-eabi/bin/../lib/gcc/arm-zephyr-eabi/10.3.0/../../../../arm-zephyr-eabi/bin/ld.exe: C:\ncs\v2.0.0\modules\lib\openthread\src\core\diags\factory_diags.cpp:250: undefined reference to `otPlatDiagTxPowerSet'
c:/ncs/toolchains/v2.0.0/opt/zephyr-sdk/arm-zephyr-eabi/bin/../lib/gcc/arm-zephyr-eabi/10.3.0/../../../../arm-zephyr-eabi/bin/ld.exe: modules/openthread/build/src/core/libopenthread-mtd.a(factory_diags.cpp.obj): in function `ot::FactoryDiags::Diags::ProcessSend(unsigned char, char**, char*, unsigned int)':
C:\ncs\v2.0.0\modules\lib\openthread\src\core\diags\factory_diags.cpp:304: undefined reference to `otPlatDiagModeGet'
c:/ncs/toolchains/v2.0.0/opt/zephyr-sdk/arm-zephyr-eabi/bin/../lib/gcc/arm-zephyr-eabi/10.3.0/../../../../arm-zephyr-eabi/bin/ld.exe: modules/openthread/build/src/core/libopenthread-mtd.a(factory_diags.cpp.obj): in function `ot::FactoryDiags::Diags::ProcessCmd(unsigned char, char**, char*, unsigned int)':
C:\ncs\v2.0.0\modules\lib\openthread\src\core\diags\factory_diags.cpp:627: undefined reference to `otPlatDiagModeGet'
c:/ncs/toolchains/v2.0.0/opt/zephyr-sdk/arm-zephyr-eabi/bin/../lib/gcc/arm-zephyr-eabi/10.3.0/../../../../arm-zephyr-eabi/bin/ld.exe: modules/openthread/build/src/core/libopenthread-mtd.a(factory_diags.cpp.obj): in function `ot::FactoryDiags::Diags::IsEnabled()':
C:\ncs\v2.0.0\modules\lib\openthread\src\core\diags\factory_diags.cpp:660: undefined reference to `otPlatDiagModeGet'
collect2.exe: error: ld returned 1 exit status
ninja: build stopped: subcommand failed.
FATAL ERROR: command exited with status 1: 'c:\ncs\toolchains\v2.0.0\opt\bin\cmake.EXE' --build 'c:\nrfwork\coap_client\build'

I am using SDK 2.0.0

What I have tried

1. Have added 

CONFIG_OPENTHREAD_NORDIC_LIBRARY_MTD=y to the prj.conf as indicated in https://developer.nordicsemi.com/nRF_Connect_SDK/doc/latest/nrf/ug_thread_configuring.html

CONFIG_OPENTHREAD_MTD=y

2. Have added overlay-mtd.conf

None of them seems to help.

When I looked into C:\ncs\v2.0.0\modules\lib\openthread\src\core\diags\factory_diags.cpp, the #if OPENTHREAD_CONFIG_DIAG_ENABLE seems to be disabled. Nowhere in https://developer.nordicsemi.com/nRF_Connect_SDK/doc/latest/nrf/samples/openthread/coap_client/README.html I see that this has to be enabled. I even tried adding 'CONFIG_OPENTHREAD_CONFIG_DIAG_ENABLE=y' to prj.conf, which resulted in build failure in kconfig. 

I cant think why this build issue right out of the box. Please help.

Thanks,

[Marte Myrvold]

Hi,

I am not able to reproduce this error when building on my side. Have you made any additional changes to the samples besides what you mention here, or have you made changes to any of the files in the SDK? 

Do you get the same error when you do not change the configurations?

What are you using the build the samples, command line or VS Code?

Best regards,

Marte

[kaushalyasat]

Thanks Marte,

Strangely, when I tried this project from my home, I couldn't recreate as well!!

So some change to my SDK at office, I guess. I didn't do anything intentionally. So best would be to reinstall the SDK. I will try that.

Ys without the config changes also I was getting the same error.

I am using VS code. 

Thanks again,

[kaushalyasat]

Hi Marte,

The issue was resolved by deleting the NRF connect SDK folder completely and reinstalling using NRF connect ->Toolchain Manager.