Hi,
I am trying to set up an MCUBoot child image. But when building the project, I get this CMake warning:
-- Found Python3: C:/ncs/toolchains/31f4403e35/opt/bin/python.exe (found version "3.8.2") found components: Interpreter
=== child image mcuboot - begin ===
loading initial cache file C:/GitLab/my_project/project/app/build/mcuboot/child_image_preload.cmake
CMake Warning (dev) at C:/GitLab/my_project/project/app/build/mcuboot/child_image_preload.cmake:7 (set):
Syntax error in cmake code at
C:/GitLab/my_project/project/app/build/mcuboot/child_image_preload.cmake:7
when parsing string
c:\ncs\toolchains\31f4403e35\opt\bin\python.exe
Invalid escape sequence \3
Policy CMP0010 is not set: Bad variable reference syntax is an error. Run
"cmake --help-policy CMP0010" for policy details. Use the cmake_policy
command to set the policy and suppress this warning.
This warning is for project developers. Use -Wno-dev to suppress it.
Loading Zephyr default modules (Zephyr base (cached)).
Looking at child_image_preload.cmake, I see that WEST_PYTHON is as follows:
`set(WEST_PYTHON "c:\ncs\toolchains\31f4403e35\opt\bin\python.exe" CACHE INTERNAL "NCS child image controlled")`
This string uses a single backslash (string escape), instead of double backslashes or a single forward slash.
I tried adding string replaces to `multi_image.cmake`, but this didn't solve it.
...:89
foreach(app_var_name ${application_vars})
string(REPLACE "\"" "\\\"" app_var_value "${${app_var_name}}")
string(REPLACE "\\" "\\\\" app_var_value "${${app_var_name}}") # Added to make string safe
file(
APPEND
${base_image_preload_file}
"set(${app_var_name} \"${app_var_value}\" CACHE INTERNAL \"NCS child image controlled\")\n"
)
endforeach()
...
... :400
foreach(var_name ${VARIABLES_ALL})
string(REPLACE "\"" "\\\"" ${var_name} "${${var_name}}")
string(REPLACE "\\" "\\\\" ${var_name} "${${var_name}}") # Added to make string safe
# This regex is guaranteed to match due to the filtering done
# above, we only re-run the regex to extract the part after
# '_'. We run the regex twice because it is believed that
# list(FILTER is faster than doing a string(REGEX on each item.
string(REGEX MATCH "^${ACI_NAME}_(.+)" unused_out_var ${var_name})
file(
APPEND
${preload_file}
"set(${CMAKE_MATCH_1} \"${${var_name}}\" CACHE INTERNAL \"NCS child image controlled\")\n"
)
endforeach()
Do you know how I can fix it?
Edit:- nRF Connect SDK: v2.4.0 (installed through toolchain manager)
- OS: Windows 11
- Python version: 3.11.3
- CMake version: 3.26.3
Kind regards,
Tim
