qemu build not working on fresh ncs v2.3.0

[douglas.malnati]

Windows 11, NCS v2.3.0, VSCode

I installed ncs v2.3.0 via the nrf desktop app.

I opened vscode, opened an nRF Connect console, and issued the command:

west build -b qemu_x86 samples/hello_world

I was expecting this to work because of the zephyr 3.2.0 guide: docs.zephyrproject.org/.../beyond-GSG.html

PS C:\Users\dougl> cd C:\ncs\v2.3.0\zephyr\
PS C:\ncs\v2.3.0\zephyr> west build -b qemu_x86 samples/hello_world
-- west build: generating a build system
Loading Zephyr default modules (Zephyr base (cached)).
-- Application: C:/ncs/v2.3.0/zephyr/samples/hello_world
-- Using NCS Toolchain 2.3.0 for building. (C:/ncs/toolchains/v2.3.0/cmake)
-- Cache files will be written to: C:/ncs/v2.3.0/zephyr/.cache
-- Zephyr version: 3.2.99 (C:/ncs/v2.3.0/zephyr)
-- Found west (found suitable version "0.14.0", minimum required is "0.7.1")
-- Board: qemu_x86
-- Found host-tools: zephyr 0.15.2 (C:/ncs/toolchains/v2.3.0/opt/zephyr-sdk)
-- Found toolchain: zephyr 0.15.2 (C:/ncs/toolchains/v2.3.0/opt/zephyr-sdk)
-- Found BOARD.dts: C:/ncs/v2.3.0/zephyr/boards/x86/qemu_x86/qemu_x86.dts
-- Generated zephyr.dts: C:/ncs/v2.3.0/zephyr/build/zephyr/zephyr.dts
-- Generated devicetree_generated.h: C:/ncs/v2.3.0/zephyr/build/zephyr/include/generated/devicetree_generated.h
-- Including generated dts.cmake file: C:/ncs/v2.3.0/zephyr/build/zephyr/dts.cmake
Parsing C:/ncs/v2.3.0/zephyr/Kconfig
Loaded configuration 'C:/ncs/v2.3.0/zephyr/build/zephyr/.config'
No change to configuration in 'C:/ncs/v2.3.0/zephyr/build/zephyr/.config'
No change to Kconfig header in 'C:/ncs/v2.3.0/zephyr/build/zephyr/include/generated/autoconf.h'
CMake Error at C:/ncs/v2.3.0/zephyr/cmake/compiler/gcc/target.cmake:43 (message):
  C compiler
  C:/ncs/toolchains/v2.3.0/opt/zephyr-sdk/x86_64-zephyr-elf/bin/x86_64-zephyr-elf-gcc
  not found - Please check your toolchain installation
Call Stack (most recent call first):
  C:/ncs/v2.3.0/zephyr/cmake/modules/FindTargetTools.cmake:102 (include)
  C:/ncs/v2.3.0/zephyr/cmake/modules/kernel.cmake:25 (find_package)
  C:/ncs/v2.3.0/zephyr/cmake/modules/zephyr_default.cmake:117 (include)
  C:/ncs/v2.3.0/zephyr/share/zephyr-package/cmake/ZephyrConfig.cmake:66 (include)
  C:/ncs/v2.3.0/zephyr/share/zephyr-package/cmake/ZephyrConfig.cmake:97 (include_boilerplate)
  CMakeLists.txt:5 (find_package)


-- Configuring incomplete, errors occurred!
FATAL ERROR: command exited with status 1: 'c:\ncs\toolchains\v2.3.0\opt\bin\cmake.EXE' '-DWEST_PYTHON=c:\ncs\toolchains\v2.3.0\opt\bin\python.exe' '-BC:\ncs\v2.3.0\zephyr\build' -GNinja '-SC:\ncs\v2.3.0\zephyr\samples\hello_world'
PS C:\ncs\v2.3.0\zephyr> 

Can you tell me what isn't working and how to fix it?

This also didn't work for the native_posix.

Thanks.

[Einar Thorsrud]

Hi,

We only ship a toolchain for nRF (ARM) devices in the toolchain manager. To build for other platforms that are supported by Zephyr you will need to install the required tools to build for those targets. Nordic does not directly support it and I have never done it myself, but you can refer to the Zephyr documentation on installation and on QEMU for the x86.

[douglas.malnati]

Hi, I have followed the step-by-step instructions on setting up zephyr on the command line, and I was able to build, but not run.

The page you linked to said building for qemu_x86 (not qemu_x86_64) works normally I think, but the _x64 had to install special things?

Why isn't this running?

I also installed the chocolatey package (link) for qemu and zephyr-qemu but that didn't fix it.

PS C:\Users\dougl\zephyrproject\zephyr> west build -p always -b qemu_x86 .\samples\hello_world\
-- west build: making build dir C:\Users\dougl\zephyrproject\zephyr\build pristine
-- west build: generating a build system
Loading Zephyr default modules (Zephyr base).
-- Application: C:/Users/dougl/zephyrproject/zephyr/samples/hello_world
-- CMake version: 3.26.1
-- Found Python3: C:/Python311/python.exe (found suitable exact version "3.11.2") found components: Interpreter
-- Cache files will be written to: C:/Users/dougl/zephyrproject/zephyr/.cache
-- Zephyr version: 3.3.99 (C:/Users/dougl/zephyrproject/zephyr)
-- Found west (found suitable version "1.0.0", minimum required is "0.7.1")
-- Board: qemu_x86
-- ZEPHYR_TOOLCHAIN_VARIANT not set, trying to locate Zephyr SDK
-- Found host-tools: zephyr 0.16.0 (C:/Users/dougl/zephyr-sdk-0.16.0)
-- Found toolchain: zephyr 0.16.0 (C:/Users/dougl/zephyr-sdk-0.16.0)
-- Found Dtc: C:/ProgramData/chocolatey/bin/dtc.exe (found suitable version "1.5.0", minimum required is "1.4.6")
-- Found BOARD.dts: C:/Users/dougl/zephyrproject/zephyr/boards/x86/qemu_x86/qemu_x86.dts
-- Generated zephyr.dts: C:/Users/dougl/zephyrproject/zephyr/build/zephyr/zephyr.dts
-- Generated devicetree_generated.h: C:/Users/dougl/zephyrproject/zephyr/build/zephyr/include/generated/devicetree_generated.h
-- Including generated dts.cmake file: C:/Users/dougl/zephyrproject/zephyr/build/zephyr/dts.cmake
Parsing C:/Users/dougl/zephyrproject/zephyr/Kconfig
Loaded configuration 'C:/Users/dougl/zephyrproject/zephyr/boards/x86/qemu_x86/qemu_x86_defconfig'
Merged configuration 'C:/Users/dougl/zephyrproject/zephyr/samples/hello_world/prj.conf'
Configuration saved to 'C:/Users/dougl/zephyrproject/zephyr/build/zephyr/.config'
Kconfig header saved to 'C:/Users/dougl/zephyrproject/zephyr/build/zephyr/include/generated/autoconf.h'
-- The C compiler identification is GNU 12.2.0
-- The CXX compiler identification is GNU 12.2.0
-- The ASM compiler identification is GNU
-- Found assembler: C:/Users/dougl/zephyr-sdk-0.16.0/x86_64-zephyr-elf/bin/x86_64-zephyr-elf-gcc.exe
CMake Warning at C:/Users/dougl/zephyrproject/zephyr/subsys/random/CMakeLists.txt:11 (message):

Warning: CONFIG_TIMER_RANDOM_GENERATOR is not a truly random generator.
This capability is not secure and it is provided for testing purposes only.
Use it carefully.

CMake Warning at C:/Users/dougl/zephyrproject/zephyr/CMakeLists.txt:828 (message):
No SOURCES given to Zephyr library: lib__libc__common

Excluding target from build.

-- Configuring done (5.1s)
-- Generating done (0.2s)
-- Build files have been written to: C:/Users/dougl/zephyrproject/zephyr/build
←[92m-- west build: building application
[1/131] Generating include/generated/version.h
-- Zephyr version: 3.3.99 (C:/Users/dougl/zephyrproject/zephyr), build: zephyr-v3.3.0-1713-gccd88a4b611c
[117/131] Linking C executable zephyr\zephyr_pre0.elf

[121/131] Linking C executable zephyr\zephyr_pre1.elf

[131/131] Linking C executable zephyr\zephyr.elf
Memory region Used Size Region Size %age Used
RAM: 53280 B 3 MB 1.69%
IDT_LIST: 0 GB 2 KB 0.00%
PS C:\Users\dougl\zephyrproject\zephyr> west build -t run
-- west build: running target run
[0/1] To exit from QEMU enter: 'CTRL+a, x'[QEMU] CPU: qemu32,+nx,+pae'QEMU-NOTFOUND' is not recognized as an internal or external command,
operable program or batch file.

FAILED: zephyr/CMakeFiles/run_qemu C:/Users/dougl/zephyrproject/zephyr/build/zephyr/CMakeFiles/run_qemu
cmd.exe /C "cd /D C:\Users\dougl\zephyrproject\zephyr\build && QEMU-NOTFOUND -m 4 -cpu qemu32,+nx,+pae -machine q35 -device isa-debug-exit,iobase=0xf4,iosize=0x04 -no-reboot -nographic -no-acpi -net none -pidfile qemu.pid -chardev stdio,id=con,mux=on -serial chardev:con -mon chardev=con,mode=readline -icount shift=5,align=off,sleep=off -rtc clock=vm -kernel C:/Users/dougl/zephyrproject/zephyr/build/zephyr/zephyr.elf"
ninja: build stopped: subcommand failed.
FATAL ERROR: command exited with status 1: 'C:\Program Files\CMake\bin\cmake.EXE' --build 'C:\Users\dougl\zephyrproject\zephyr\build' --target run
PS C:\Users\dougl\zephyrproject\zephyr>

Thanks.

[douglas.malnati]

Update, I installed the qemu for 64-bit windows from here (link), re-built, and re-ran and it worked.