v1.5.0 MCUboot build fail

RE: v1.5.0 MCUboot build fail

eva_c — Fri, 05 Mar 2021 08:29:13 GMT

Ok, thank you for checking that out. I will stick with shorter folder paths for now.

RE: v1.5.0 MCUboot build fail

Simon — Wed, 03 Mar 2021 16:04:58 GMT

I got in contact with some of the developer internally and got informed this is a known issue hard to do much about. See the following: http://developer.nordicsemi.com/nRF_Connect_SDK/doc/latest/nrf/known_issues.html#build-system

The workaround is the following:

"Shorten the build folder name, e.g. from “build_nrf5340dk_nrf5340_cpuappns” to “build”, or shorten the path to the build folder in some other way."

We are looking into how we may minimize the issue, such as using differently named build folders, not using user's home as default path, etc.

But all those will just be work arounds to the fundemetal problem of Windows path length limitation.

RE: v1.5.0 MCUboot build fail

Simon — Wed, 03 Mar 2021 09:45:23 GMT

Ah, okay, so you are able to get it to work if you move it close to C:/. Would it be possible to go with that as a temporary workaround? I've forwarded this issue to the developers internally. I'll keep you updated.

RE: v1.5.0 MCUboot build fail

eva_c — Wed, 03 Mar 2021 08:19:13 GMT

Thank you for looking into that.

I did already enable longer paths on Windows, as described in above instructions. The exact Cmake warning I get when building the project in folder with longer path is:

CMake Warning in C:/Users/Eva/ncs/v1.5.0/bootloader/mcuboot/boot/bootutil/zephyr/CMakeLists.txt:
  The object file directory

    C:/Users/Eva/XXX/build/modules/mcuboot/boot/bootutil/zephyr/CMakeFiles/..__bootloader__mcuboot__boot__bootutil__zephyr.dir/./

  has 211 characters.  The maximum full path to an object file is 250
  characters (see CMAKE_OBJECT_PATH_MAX).  Object file

    C_/Users/Eva/ncs/v1.5.0/bootloader/mcuboot/boot/bootutil/src/bootutil_public.c.obj

  cannot be safely placed under this directory.  The build may not work
  correctly.

which then results in an error:

-- Generating done
-- Build files have been written to: C:/Users/Eva/XXX/build
-- west build: building application
[5/329] Performing build step for 'mcuboot_subimage'
ninja: error: mkdir(modules/mcuboot/boot/bootutil/zephyr/CMakeFiles/..__bootloader__mcuboot__boot__bootutil__zephyr.dir/C_/Users/Eva/ncs/v1.5.0/bootloader/mcuboot/boot/bootutil): No such file or directory
ninja: error: mkdir(modules/mcuboot/boot/bootutil/zephyr/CMakeFiles/..__bootloader__mcuboot__boot__bootutil__zephyr.dir/C_/Users/Eva/ncs/v1.5.0/bootloader/mcuboot/boot): No such file or directoryil_public.c.obj

ninja: build stopped: .

I did try to get around this by increasing CMAKE_OBJECT_PATH_MAX value, which successfully removes the warning, however the error stays. Non of this is a problem when building in folder closer to C:/, as mentioned.

RE: v1.5.0 MCUboot build fail

Simon — Tue, 02 Mar 2021 21:39:18 GMT

I'm handling another case at the moment where a customer tried to run a copied version of the Asset tracker application (same application with different name) through SES, and he encountered some issues when building the file ..\ncs\v1.5.0\bootloader\mcuboot\boot\bootutil\src\bootutil_public.c.obj.d, so something is going on here. Will see if I can get to the bottom of this.

RE: v1.5.0 MCUboot build fail

Simon — Tue, 02 Mar 2021 15:09:55 GMT

You could also try to follow this https://www.howtogeek.com/266621/how-to-make-windows-10-accept-file-paths-over-260-characters/

RE: v1.5.0 MCUboot build fail

Simon — Tue, 02 Mar 2021 15:04:19 GMT

I'm not sure what to do in order to reduce the path length, since you have already moved the project close to C:/. It would be nice if you could provide some steps how to reproduce it or share your project, then I could try to investigate it. I could make the case private if you would like to.

I guess some changes have been made to the build system of NCS (Zephyr) v1.5.0 that's causing longer path lengths.

Best regards,

Simon

RE: v1.5.0 MCUboot build fail

eva_c — Tue, 02 Mar 2021 09:18:44 GMT

I did manage to get the build working by moving project folder closer to C and manually updating Cmake to the latest version.

However I still run into problems when trying to perform build command in my standard folder:

CMake Warning in C:/Users/Eva/ncs/v1.5.0/bootloader/mcuboot/boot/bootutil/zephyr/CMakeLists.txt:
  The object file directory

    C:/Users/XXX/build/modules/mcuboot/boot/bootutil/zephyr/CMakeFiles/..__bootloader__mcuboot__boot__bootutil__zephyr.dir/./  
  has 211 characters.  The maximum full path to an object file is 250
  characters (see CMAKE_OBJECT_PATH_MAX).  Object file

    C_/Users/Eva/ncs/v1.5.0/bootloader/mcuboot/boot/bootutil/src/bootutil_public.c.obj

  cannot be safely placed under this directory.  The build may not work
  correctly.

As far as I understand this is a Windows problem, but I did not have it with ncs 1.4.1 version. I did enable long paths on Windows with no success. Is there anything else I can try besides moving project folders closer to C:/ ?