Error converting the sample project

This error looks strange to me because, unless I am wrong, STM32Cube_FW_H7RS_V1.3.0\Projects\NUCLEO-H7S3L8\Applications\ROT\OEMiROT_Boot\STM32CubeIDE does not exist. I just see 2 readme file in OEMiROT_Boot folder. So I do not understand how it can be listed in the Examples Browser.

---

It must also be possible to convert projects with multiple contexts and multi-core support, This must be made a priority

It is, we're actively working on it.

I managed to get the project generated by edit the intermediate stm32cubeide-export.json file and removing the 2 linker script lines:

"option.script": "-T\"./output.ld\""
and
"-T\"./output.ld\"",

Then invoke the converter manually from the VS Code terminal:

cube ide-project-convert --bypass-converter ./stm32cubeide-export.json --format cmake --destination ./cmake --source-format stm32cubeide --keep-original-json

(to adapt with your paths)

However to get the project building you have to insert a pre build cmake target to generate this missing output.ld file, and move the 2 CONFIG_FILE symbols from CMakePresets.json to CMakeLists.txt:

# Compiler options
target_compile_options(${BUILD_UNIT_0_NAME} PRIVATE
 -DMCUBOOT_TARGET_CONFIG=<flash_layout.h>
 -DMBEDTLS_CONFIG_FILE=<mbedtls_config.h>
)

# Template for CubeIDE-style pre-build steps.
# Use generated-file outputs plus a dedicated custom target so the step works
# with Ninja and other single-config generators.
set(PREBUILD_OUTPUT_LD "${CMAKE_CURRENT_BINARY_DIR}/output.ld")
set(PREBUILD_OUTPUT_IMAGE_MACROS
 "${CMAKE_CURRENT_BINARY_DIR}/image_macros_preprocessed_bl2.c"
)

add_custom_command(
 OUTPUT
 ${PREBUILD_OUTPUT_LD}
 ${PREBUILD_OUTPUT_IMAGE_MACROS}
 COMMAND ${CMAKE_C_COMPILER}
 -E -P -xc
 -DBL2
 -I${CMAKE_CURRENT_SOURCE_DIR}/Inc
 -o ${PREBUILD_OUTPUT_LD}
 ${CMAKE_CURRENT_SOURCE_DIR}/stm32h7rsxx_bl2.ld
 COMMAND ${CMAKE_C_COMPILER}
 -E -P -xc
 -DBL2
 -DSTM32H7S7xx
 -I${CMAKE_CURRENT_SOURCE_DIR}/Inc
 -I${CMAKE_CURRENT_SOURCE_DIR}/Drivers/STM32H7RSxx_HAL_Driver/Inc
 -I${CMAKE_CURRENT_SOURCE_DIR}/Drivers/CMSIS/Device/ST/STM32H7RSxx/Include
 -I${CMAKE_CURRENT_SOURCE_DIR}/Drivers/CMSIS/Core/Include
 -o ${PREBUILD_OUTPUT_IMAGE_MACROS}
 ${CMAKE_CURRENT_SOURCE_DIR}/Src/image_macros_to_preprocess_bl2.c
 DEPENDS
 ${CMAKE_CURRENT_SOURCE_DIR}/stm32h7rsxx_bl2.ld
 ${CMAKE_CURRENT_SOURCE_DIR}/Src/image_macros_to_preprocess_bl2.c
 WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}
 COMMENT "Running pre-build code generation"
 VERBATIM
)

add_custom_target(${BUILD_UNIT_0_NAME}_prebuild
 DEPENDS
 ${PREBUILD_OUTPUT_LD}
 ${PREBUILD_OUTPUT_IMAGE_MACROS}
)

add_dependencies(${BUILD_UNIT_0_NAME} ${BUILD_UNIT_0_NAME}_prebuild)

And define back the missing linker script:

# Linker options
target_link_options(${BUILD_UNIT_0_NAME} PRIVATE 
 # User defined linker options
 -T ${CMAKE_CURRENT_BINARY_DIR}/output.ld
)

 At this stage the project should build fine.

Then comes the trickiest part... This example comes with a post build step: postbuild.sh. It has a lot of hardcoded paths to original example location. Copying and invoking it is quite easy, adapting it is another story.

In vscode_generated.cmake:

if(CMAKE_BUILD_TYPE STREQUAL "Release")
 add_custom_command(
 TARGET ${BUILD_UNIT_0_NAME}
 POST_BUILD
 COMMAND arm-none-eabi-objcopy -O binary "${BUILD_UNIT_0_NAME}${CMAKE_EXECUTABLE_SUFFIX_C}" "STM32H7S78-DK_OEMiROT_Boot.bin"
 WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}
 )
 add_custom_command(
 TARGET ${BUILD_UNIT_0_NAME}
 POST_BUILD
 COMMAND ../../postbuild.sh Release
 WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}
 )
endif()

 can be moved also to main CMakeLists.txt.