CMake Long Path Error in Zephyr Twister on Windows Despite LongPathsEnabled and CMAKE_OBJECT_PATH_MAX Settings

[NamrataGagare-eaton]

Background:
While running multiple examples using Twister in Zephyr, I encountered the following error for some test cases:
C:/blr_deps/zephyr-v3.6.0/zephyr/scripts/twister-out/nucleo_u575zi_q/utility/etl-containers-vector/examples.utility.etl_containers_vector/modules/stm32/stm32cube/CMakeFiles/..__modules__hal__stm32__stm32cube.dir/./

has 214 characters. The maximum full path to an object file is 250
characters (see CMAKE_OBJECT_PATH_MAX). Object file

stm32u5xx/drivers/src/stm32u5xx_ll_utils.c.obj

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

Experimentations done:

1. Set environment variable in PowerShell:
   $env:CMAKE_OBJECT_PATH_MAX = "512"

2. Set system-wide environment variable (as Administrator):
   setx CMAKE_OBJECT_PATH_MAX "512" /M

3. Enabled long path support in Windows Registry:
   New-ItemProperty -Path "HKLM:\SYSTEM\CurrentControlSet\Control\FileSystem" -Name "LongPathsEnabled" -Value 1 -PropertyType DWORD -Force
   Verified with:
   Get-ItemProperty -Path "HKLM:\SYSTEM\CurrentControlSet\Control\FileSystem" -Name "LongPathsEnabled"
   Output confirms: LongPathsEnabled = 1

4. Added below in zephyr/CMakeLists.txt and project specific CMakelists.txt
   if(WIN32)
   set(CMAKE_OBJECT_PATH_MAX 512)
   endif()

None of the above helped.

Support Required:
What configuration or workaround is required to resolve the long path error with CMake when using Twister on Windows?

Thanks in advance for your support!