external_lib not compiling out of the box

[ahebbar09]

I am trying to get external_lib example application to compile for NRF5340pdk. I am using nRF Connect SDK v1.4.1 and picked the example provided in zepher/samples/application_development/external_lib. The code does not compile and does not seem to give any obvious errors. I am using a windows 10 PC for development. Do I need to do something more to get it to compile and run?

[hmahdi]

Hello, 

I am facing the same problem with nRF Connect SDK v1.7.0. I downloaded the working version of mkdir as suggested by  Vidar Berg and placed it in toolchain\usr\bin\  but it did not help.

I would really appreciate any pointers in the right direction. I am hard stuck at the moment.

Thanks,

Hamza 

[hmahdi]

Hey ahebbar09 If you remember what you changed in the paths to make it work, please let me know.

[Vidar Berg]

Hello Hamza,

Could you please post your build log as well as the PATH variable from the terminal you used to build the sample with?

Echo path variable from cmd:

> echo %PATH%

Thanks,

Vidar

[hmahdi]

Hello,

Here are the outputs from PATH:

C:\Program Files (x86)\NVIDIA Corporation\PhysX\Common;C:\Program Files\NVIDIA GPU Computing Toolkit\CUDA\v10.2\bin;C:\Program Files\NVIDIA GPU Computing Toolkit\CUDA\v10.2\libnvvp;C:\Windows\system32;C:\Windows;C:\Windows\System32\Wbem;C:\Windows\System32\WindowsPowerShell\v1.0\;C:\Windows\System32\OpenSSH\;C:\Program Files\NVIDIA Corporation\Nsight Compute 2019.5.0\;C:\Program Files\NVIDIA Corporation\NVIDIA NvDLISR;C:\Program Files\Microsoft SQL Server\Client SDK\ODBC\110\Tools\Binn\;C:\Program Files (x86)\Microsoft SQL Server\120\Tools\Binn\;C:\Program Files\Microsoft SQL Server\120\Tools\Binn\;C:\Program Files\Microsoft SQL Server\120\DTS\Binn\;C:\Program Files (x86)\Windows Kits\8.1\Windows Performance Toolkit\;C:\Program Files (x86)\IVI Foundation\VISA\WinNT\Bin;C:\Program Files\MATLAB\R2020a\bin;C:\Program Files\Git\cmd;C:\ProgramData\chocolatey\bin;;C:\WINDOWS\system32;C:\WINDOWS;C:\WINDOWS\System32\Wbem;C:\WINDOWS\System32\WindowsPowerShell\v1.0\;C:\WINDOWS\System32\OpenSSH\;C:\Program Files\Git LFS;C:\Program Files (x86)\ZeroTier\One\;C:\Program Files\Nordic Semiconductor\nrf-command-line-tools\bin\;C:\Program Files\PuTTY\;C:\Users\Anas\AppData\Local\Microsoft\WindowsApps;C:\Users\Anas\AppData\Local\Programs\Microsoft VS Code\bin;C:\Program Files\glfw-3.3.2.bin.WIN64\lib-mingw-w64;C:\Users\Anas\AppData\Local\GitHubDesktop\bin;C:\Users\Anas\AppData\Local\Google\Cloud SDK\google-cloud-sdk\bin;C:\Users\Anas\Downloads\open_model_zoo\tools\downloader;;%USERPROFILE%\AppData\Local\Microsoft\WindowsApps

and here is the build output:

 Executing task: nRF Connect: Generate config nrf52840dk_nrf52840 for udp/external_lib <

Building external_lib
west build --build-dir c:\Users\Anas\Desktop\thread\udp\external_lib\build c:\Users\Anas\Desktop\thread\udp\external_lib --pristine --board nrf52840dk_nrf52840 -- -DCMAKE_EXPORT_COMPILE_COMMANDS:BOOL=On -DNCS_TOOLCHAIN_VERSION:STRING="NONE"

-- west build: generating a build system
Including boilerplate (Zephyr base): C:/Users/Anas/ncs/v1.7.0/zephyr/cmake/app/boilerplate.cmake
-- Application: C:/Users/Anas/Desktop/thread/udp/external_lib
-- Zephyr version: 2.6.99 (C:/Users/Anas/ncs/v1.7.0/zephyr), build: v2.6.99-ncs1
-- Found Python3: C:/Users/Anas/ncs/v1.7.0/toolchain/opt/bin/python.exe (found suitable exact version "3.8.2") found components: Interpreter 
-- Found west (found suitable version "0.11.1", minimum required is "0.7.1")
-- Board: nrf52840dk_nrf52840
-- Cache files will be written to: C:/Users/Anas/ncs/v1.7.0/zephyr/.cache
-- Found dtc: C:/Users/Anas/ncs/v1.7.0/toolchain/opt/bin/dtc.exe (found suitable version "1.4.7", minimum required is "1.4.6")
-- Found toolchain: gnuarmemb (c:/Users/Anas/ncs/v1.7.0/toolchain/opt)
-- Found BOARD.dts: C:/Users/Anas/ncs/v1.7.0/zephyr/boards/arm/nrf52840dk_nrf52840/nrf52840dk_nrf52840.dts
-- Generated zephyr.dts: C:/Users/Anas/Desktop/thread/udp/external_lib/build/zephyr/zephyr.dts
-- Generated devicetree_unfixed.h: C:/Users/Anas/Desktop/thread/udp/external_lib/build/zephyr/include/generated/devicetree_unfixed.h
-- Generated device_extern.h: C:/Users/Anas/Desktop/thread/udp/external_lib/build/zephyr/include/generated/device_extern.h
-- Including generated dts.cmake file: C:/Users/Anas/Desktop/thread/udp/external_lib/build/zephyr/dts.cmake
Parsing C:/Users/Anas/ncs/v1.7.0/zephyr/Kconfig
Loaded configuration 'C:/Users/Anas/ncs/v1.7.0/zephyr/boards/arm/nrf52840dk_nrf52840/nrf52840dk_nrf52840_defconfig'
Merged configuration 'C:/Users/Anas/Desktop/thread/udp/external_lib/prj.conf'
Configuration saved to 'C:/Users/Anas/Desktop/thread/udp/external_lib/build/zephyr/.config'
Kconfig header saved to 'C:/Users/Anas/Desktop/thread/udp/external_lib/build/zephyr/include/generated/autoconf.h'
-- The C compiler identification is GNU 9.2.1
-- The CXX compiler identification is GNU 9.2.1
-- The ASM compiler identification is GNU
-- Found assembler: C:/Users/Anas/ncs/v1.7.0/toolchain/opt/bin/arm-none-eabi-gcc.exe
-- Configuring done
-- Generating done
-- Build files have been written to: C:/Users/Anas/Desktop/thread/udp/external_lib/build
-- west build: building application
[1/158] Creating directories for 'mylib_project'
[2/158] No download step for 'mylib_project'
[3/158] No update step for 'mylib_project'
[4/158] No patch step for 'mylib_project'
[5/158] No configure step for 'mylib_project'
[6/158] Performing build step for 'mylib_project'
FAILED: mylib/src/mylib_project-stamp/mylib_project-build mylib/lib/libmylib.a 
cmd.exe /C "cd /D C:\Users\Anas\Desktop\thread\udp\external_lib\mylib && make PREFIX=C:/Users/Anas/Desktop/thread/udp/external_lib/build/mylib CC=C:/Users/Anas/ncs/v1.7.0/toolchain/opt/bin/arm-none-eabi-gcc.exe AR=C:/Users/Anas/ncs/v1.7.0/toolchain/opt/bin/arm-none-eabi-ar.exe "CFLAGS=-IC:/Users/Anas/ncs/v1.7.0/zephyr/include -IC:/Users/Anas/Desktop/thread/udp/external_lib/build/zephyr/include/generated -IC:/Users/Anas/ncs/v1.7.0/zephyr/soc/arm/nordic_nrf/nrf52 -IC:/Users/Anas/ncs/v1.7.0/zephyr/lib/libc/minimal/include -IC:/Users/Anas/ncs/v1.7.0/nrf/include -IC:/Users/Anas/ncs/v1.7.0/modules/hal/cmsis/CMSIS/Core/Include -IC:/Users/Anas/ncs/v1.7.0/modules/hal/nordic/nrfx -IC:/Users/Anas/ncs/v1.7.0/modules/hal/nordic/nrfx/drivers/include -IC:/Users/Anas/ncs/v1.7.0/modules/hal/nordic/nrfx/mdk -IC:/Users/Anas/ncs/v1.7.0/zephyr/modules/hal_nordic/nrfx/. -IC:/Users/Anas/ncs/v1.7.0/modules/debug/segger/SEGGER -IC:/Users/Anas/ncs/v1.7.0/modules/debug/segger/Config -IC:/Users/Anas/ncs/v1.7.0/zephyr/modules/segger/. -Ic:/users/anas/ncs/v1.7.0/toolchain/opt/bin/../lib/gcc/arm-none-eabi/9.2.1/include -Ic:/users/anas/ncs/v1.7.0/toolchain/opt/bin/../lib/gcc/arm-none-eabi/9.2.1/include-fixed -DKERNEL -D__ZEPHYR__=1 -D_FORTIFY_SOURCE=2 -DBUILD_VERSION=v2.6.99-ncs1 -DUSE_PARTITION_MANAGER=0 -D__PROGRAM_START -DNRF52840_XXAA -Os -imacros C:/Users/Anas/Desktop/thread/udp/external_lib/build/zephyr/include/generated/autoconf.h -ffreestanding -fno-common -g -gdwarf-4 -fdiagnostics-color=always -mcpu=cortex-m4 -mthumb -mabi=aapcs -imacros C:/Users/Anas/ncs/v1.7.0/zephyr/include/toolchain/zephyr_stdint.h -Wall -Wformat -Wformat-security -Wno-format-zero-length -Wno-main -Wno-pointer-sign -Wpointer-arith -Wexpansion-to-defined -Wno-address-of-packed-member -Wno-unused-but-set-variable -Werror=implicit-int -fno-asynchronous-unwind-tables -fno-pie -fno-pic -fno-strict-overflow -fno-reorder-functions -fno-defer-pop -fmacro-prefix-map=C:/Users/Anas/Desktop/thread/udp/external_lib=CMAKE_SOURCE_DIR -fmacro-prefix-map=C:/Users/Anas/ncs/v1.7.0/zephyr=ZEPHYR_BASE -fmacro-prefix-map=C:/Users/Anas/ncs/v1.7.0=WEST_TOPDIR -ffunction-sections -fdata-sections -std=c99 -nostdinc -isystemC:/Users/Anas/ncs/v1.7.0/zephyr/lib/libc/minimal/include -isystemc:/users/anas/ncs/v1.7.0/toolchain/opt/bin/../lib/gcc/arm-none-eabi/9.2.1/include -isystemc:/users/anas/ncs/v1.7.0/toolchain/opt/bin/../lib/gcc/arm-none-eabi/9.2.1/include-fixed" && C:\Users\Anas\ncs\v1.7.0\toolchain\opt\bin\cmake.exe -E touch C:/Users/Anas/Desktop/thread/udp/external_lib/build/mylib/src/mylib_project-stamp/mylib_project-build"
mkdir -p C:/Users/Anas/Desktop/thread/udp/external_lib/build/mylib/obj C:/Users/Anas/Desktop/thread/udp/external_lib/build/mylib/lib
The syntax of the command is incorrect.
make: *** [c:\Users\Anas\Desktop\thread\udp\external_lib\build\Makefile:12: all] Error 1
[7/158] Generating misc/generated/syscalls.json, misc/generated/struct_tags.json
ninja: build stopped: subcommand failed.
FATAL ERROR: command exited with status 1: 'c:\Users\Anas\ncs\v1.7.0\toolchain\opt\bin\cmake.EXE' --build 'c:\Users\Anas\Desktop\thread\udp\external_lib\build'
The terminal process terminated with exit code: 1.

Terminal will be reused by tasks, press any key to close it.

I also compiled with the -p option removed, however, it still failed.

[Vidar Berg]

Hello,

The 'mkdir' command on Windows does not support the -p argument. Can you try to build the project from the bash terminal instead?