mcuboot_smp_custom_key west build failed with error: Aborting due to Kconfig warnings

[snowuyl]

Thanks for your reply! I try to build the following sample. But it failed to build.

https://github.com/hellesvik-nordic/samples_for_nrf_connect_sdk/tree/main/bootloader_samples/keys_and_signatures/mcuboot_smp_custom_key

The following are log messages of west build.

D:\ncs\v2.4.0\bootloader\mcuboot\samples\zephyr\mcuboot_smp_custom_key>west build -b nrf5340dk_nrf5340_cpuapp -- west build: generating a build system

...

warning: MCUMGR (defined at subsys/mgmt/mcumgr/Kconfig:5) was assigned the value 'y' but got the value 'n'. Check these unsatisfied dependencies: NET_BUF (=n), ZCBOR (=n). See docs.zephyrproject.org/.../kconfig.html and/or look up MCUMGR in the menuconfig/guiconfig interface. The Application Development Primer, Setting Configuration Values, and Kconfig - Tips and Best Practices sections of the manual might be helpful too.

D:/ncs/v2.4.0/bootloader/mcuboot/samples/zephyr/mcuboot_smp_custom_key/prj.conf:3: warning: attempt to assign the value 'y' to the undefined symbol MCUMGR_SMP_UART

D:/ncs/v2.4.0/bootloader/mcuboot/samples/zephyr/mcuboot_smp_custom_key/prj.conf:4: warning: attempt to assign the value 'y' to the undefined symbol MCUMGR_CMD_IMG_MGMT Parsing D:/ncs/v2.4.0/zephyr/Kconfig Loaded configuration 'D:/ncs/v2.4.0/zephyr/boards/arm/nrf5340dk_nrf5340/nrf5340dk_nrf5340_cpuapp_defconfig' Merged configuration 'D:/ncs/v2.4.0/bootloader/mcuboot/samples/zephyr/mcuboot_smp_custom_key/prj.conf'

error: Aborting due to Kconfig warnings

Procedures to reproduce this issue are as follows.

1. Unzipping mcuboot_smp_custom_key.zip to D:\ncs\v2.4.0\bootloader\mcuboot\samples\zephyr\ folder.

2. west build -b nrf5340dk_nrf5340_cpuapp

[snowuyl]

mcuboot_smp_custom_key.zip

[snowuyl]

Aborting_due_to_Kconfig_warnings.txt

[hellesvik-nordic]

Hi Is this still an issue? Do you have an DevZone ticket for this problem?

[snowuyl]

https://devzone.nordicsemi.com/f/nordic-q-a/104675/failed-to-build-mcuboot_smp_custom_key-sample-code-on-ncs-v2-4-2

[hellesvik-nordic]

Is this still an issue?

[snowuyl]

It still can't build successfully on ncs v2.4.2 with the following error messages. C:\ncs\v2.4.2\nrf\samples\mcuboot_smp_custom_key>west build -b nrf5340dk_nrf5340_cpuapp -- west build: generating a build system Loading Zephyr default modules (Zephyr base). -- Application: C:/ncs/v2.4.2/nrf/samples/mcuboot_smp_custom_key -- CMake version: 3.20.5 -- Using NCS Toolchain 2.4.0 for building. (C:/ncs/toolchains/31f4403e35/cmake) -- Found Python3: C:/ncs/toolchains/31f4403e35/opt/bin/python.exe (found suitable exact version "3.8.2") found components: Interpreter -- Cache files will be written to: C:/ncs/v2.4.2/zephyr/.cache -- Zephyr version: 3.3.99 (C:/ncs/v2.4.2/zephyr) -- Found west (found suitable version "1.0.0", minimum required is "0.7.1") -- Board: nrf5340dk_nrf5340_cpuapp -- Found host-tools: zephyr 0.16.0 (C:/ncs/toolchains/31f4403e35/opt/zephyr-sdk) -- Found toolchain: zephyr 0.16.0 (C:/ncs/toolchains/31f4403e35/opt/zephyr-sdk) -- Found Dtc: C:/ncs/toolchains/31f4403e35/opt/bin/dtc.exe (found suitable version "1.4.7", minimum required is "1.4.6") -- Found BOARD.dts: C:/ncs/v2.4.2/zephyr/boards/arm/nrf5340dk_nrf5340/nrf5340dk_nrf5340_cpuapp.dts -- Generated zephyr.dts: C:/ncs/v2.4.2/nrf/samples/mcuboot_smp_custom_key/build/zephyr/zephyr.dts -- Generated devicetree_generated.h: C:/ncs/v2.4.2/nrf/samples/mcuboot_smp_custom_key/build/zephyr/include/generated/devicetree_generated.h -- Including generated dts.cmake file: C:/ncs/v2.4.2/nrf/samples/mcuboot_smp_custom_key/build/zephyr/dts.cmake Parsing C:/ncs/v2.4.2/zephyr/Kconfig Loaded configuration 'C:/ncs/v2.4.2/zephyr/boards/arm/nrf5340dk_nrf5340/nrf5340dk_nrf5340_cpuapp_defconfig' Merged configuration 'C:/ncs/v2.4.2/nrf/samples/mcuboot_smp_custom_key/prj.conf' Configuration saved to 'C:/ncs/v2.4.2/nrf/samples/mcuboot_smp_custom_key/build/zephyr/.config' Kconfig header saved to 'C:/ncs/v2.4.2/nrf/samples/mcuboot_smp_custom_key/build/zephyr/include/generated/autoconf.h' -- Found GnuLd: c:/ncs/toolchains/31f4403e35/opt/zephyr-sdk/arm-zephyr-eabi/bin/../lib/gcc/arm-zephyr-eabi/12.2.0/../../../../arm-zephyr-eabi/bin/ld.bfd.exe (found version "2.38") -- 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:/ncs/toolchains/31f4403e35/opt/zephyr-sdk/arm-zephyr-eabi/bin/arm-zephyr-eabi-gcc.exe -- 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:/ncs/v2.4.2/nrf/samples/mcuboot_smp_custom_key/build/mcuboot/child_image_preload.cmake Loading Zephyr default modules (Zephyr base).-- Application: C:/ncs/v2.4.2/bootloader/mcuboot/boot/zephyr

-- CMake version: 3.20.5 -- Using NCS Toolchain 2.4.0 for building. (C:/ncs/toolchains/31f4403e35/cmake) -- Found Python3: C:/ncs/toolchains/31f4403e35/opt/bin/python.exe (found suitable exact version "3.8.2") found components: Interpreter -- Cache files will be written to: C:/ncs/v2.4.2/zephyr/.cache -- Zephyr version: 3.3.99 (C:/ncs/v2.4.2/zephyr) -- Found west (found suitable version "1.0.0", minimum required is "0.7.1") -- Board: nrf5340dk_nrf5340_cpuapp -- Found host-tools: zephyr 0.16.0 (C:/ncs/toolchains/31f4403e35/opt/zephyr-sdk) -- Found toolchain: zephyr 0.16.0 (C:/ncs/toolchains/31f4403e35/opt/zephyr-sdk) -- Found Dtc: C:/ncs/toolchains/31f4403e35/opt/bin/dtc.exe (found suitable version "1.4.7", minimum required is "1.4.6") -- Found BOARD.dts: C:/ncs/v2.4.2/zephyr/boards/arm/nrf5340dk_nrf5340/nrf5340dk_nrf5340_cpuapp.dts -- Found devicetree overlay: C:/ncs/v2.4.2/nrf/modules/mcuboot/usb.overlay -- Generated zephyr.dts: C:/ncs/v2.4.2/nrf/samples/mcuboot_smp_custom_key/build/mcuboot/zephyr/zephyr.dts -- Generated devicetree_generated.h: C:/ncs/v2.4.2/nrf/samples/mcuboot_smp_custom_key/build/mcuboot/zephyr/include/generated/devicetree_generated.h -- Including generated dts.cmake file: C:/ncs/v2.4.2/nrf/samples/mcuboot_smp_custom_key/build/mcuboot/zephyr/dts.cmake Parsing C:/ncs/v2.4.2/bootloader/mcuboot/boot/zephyr/Kconfig Loaded configuration 'C:/ncs/v2.4.2/zephyr/boards/arm/nrf5340dk_nrf5340/nrf5340dk_nrf5340_cpuapp_defconfig' Merged configuration 'C:/ncs/v2.4.2/bootloader/mcuboot/boot/zephyr/prj.conf' Merged configuration 'C:/ncs/v2.4.2/nrf/subsys/partition_manager/partition_manager_enabled.conf' Merged configuration 'C:/ncs/v2.4.2/nrf/samples/mcuboot_smp_custom_key/build/mcuboot/zephyr/misc/generated/extra_kconfig_options.conf' Configuration saved to 'C:/ncs/v2.4.2/nrf/samples/mcuboot_smp_custom_key/build/mcuboot/zephyr/.config' Kconfig header saved to 'C:/ncs/v2.4.2/nrf/samples/mcuboot_smp_custom_key/build/mcuboot/zephyr/include/generated/autoconf.h' -- Found GnuLd: c:/ncs/toolchains/31f4403e35/opt/zephyr-sdk/arm-zephyr-eabi/bin/../lib/gcc/arm-zephyr-eabi/12.2.0/../../../../arm-zephyr-eabi/bin/ld.bfd.exe (found version "2.38") -- 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:/ncs/toolchains/31f4403e35/opt/zephyr-sdk/arm-zephyr-eabi/bin/arm-zephyr-eabi-gcc.exe CMake Warning at C:/ncs/v2.4.2/zephyr/CMakeLists.txt:839 (message): No SOURCES given to Zephyr library: liblibccommon

Excluding target from build.

MCUBoot bootloader key file: C:/ncs/v2.4.2/nrf/samples/mcuboot_smp_custom_key/custom_key_dir/custom_priv.pem -- Configuring done -- Generating done -- Build files have been written to: C:/ncs/v2.4.2/nrf/samples/mcuboot_smp_custom_key/build/mcuboot === child image mcuboot - end ===

CMake Warning at C:/ncs/v2.4.2/zephyr/CMakeLists.txt:839 (message): No SOURCES given to Zephyr library: liblibccommon

Excluding target from build.

-- Configuring done -- Generating done -- Build files have been written to: C:/ncs/v2.4.2/nrf/samples/mcuboot_smp_custom_key/build -- west build: building application [1/225] Generating include/generated/version.h -- Zephyr version: 3.3.99 (C:/ncs/v2.4.2/zephyr), build: v3.3.99-ncs1-1 [6/225] Performing build step for 'mcuboot_subimage' [1/291] Generating include/generated/version.h -- Zephyr version: 3.3.99 (C:/ncs/v2.4.2/zephyr), build: v3.3.99-ncs1-1 [281/291] Linking C executable zephyr\zephyr_pre0.elf FAILED: zephyr/zephyr_pre0.elf zephyr/zephyr_pre0.map cmd.exe /C "cd . && C:\ncs\toolchains\31f4403e35\opt\zephyr-sdk\arm-zephyr-eabi\bin\arm-zephyr-eabi-gcc.exe -gdwarf-4 zephyr/CMakeFiles/zephyr_pre0.dir/misc/empty_file.c.obj -o zephyr\zephyr_pre0.elf -fuse-ld=bfd -T zephyr/linker_zephyr_pre0.cmd -Wl,-Map=C:/ncs/v2.4.2/nrf/samples/mcuboot_smp_custom_key/build/mcuboot/zephyr/zephyr_pre0.map -Wl,--whole-archive app/libapp.a zephyr/libzephyr.a zephyr/arch/common/libarchcommon.a zephyr/arch/arch/arm/core/aarch32/libarcharmcoreaarch32.a zephyr/arch/arch/arm/core/aarch32/cortex_m/libarcharmcoreaarch32cortex_m.a zephyr/arch/arch/arm/core/aarch32/cortex_m/cmse/libarcharmcoreaarch32cortex_mcmse.a zephyr/arch/arch/arm/core/aarch32/mpu/libarcharmcoreaarch32mpu.a zephyr/lib/libc/minimal/libliblibcminimal.a zephyr/soc/arm/common/cortex_m/libsocarmcommoncortex_m.a zephyr/drivers/clock_control/libdriversclock_control.a zephyr/drivers/console/libdriversconsole.a zephyr/drivers/flash/libdriversflash.a zephyr/drivers/gpio/libdriversgpio.a zephyr/drivers/pinctrl/libdriverspinctrl.a zephyr/drivers/serial/libdriversserial.a zephyr/drivers/timer/libdriverstimer.a modules/nrf/lib/fprotect/lib..nrflibfprotect.a modules/nrf/lib/fatal_error/lib..nrflibfatal_error.a modules/nrf/drivers/hw_cc310/lib..nrfdrivershw_cc310.a modules/mcuboot/boot/bootutil/zephyr/libmcuboot_util.a modules/mbedtls/libmodulesmbedtls.a modules/hal_nordic/nrfx/libmodules__hal_nordicnrfx.a -Wl,--no-whole-archive zephyr/kernel/libkernel.a zephyr/CMakeFiles/offsets.dir/./arch/arm/core/offsets/offsets.c.obj -L"c:/ncs/toolchains/31f4403e35/opt/zephyr-sdk/arm-zephyr-eabi/bin/../lib/gcc/arm-zephyr-eabi/12.2.0/thumb/v8-m.main/nofp" -LC:/ncs/v2.4.2/nrf/samples/mcuboot_smp_custom_key/build/mcuboot/zephyr -lgcc zephyr/arch/common/libisr_tables.a -mcpu=cortex-m33 -mthumb -mabi=aapcs -Wl,--gc-sections -Wl,--build-id=none -Wl,--sort-common=descending -Wl,--sort-section=alignment -Wl,-u,_OffsetAbsSyms -Wl,-u,_ConfigAbsSyms -nostdlib -static -Wl,-X -Wl,-N -Wl,--orphan-handling=warn -Wl,-no-pie C:/ncs/v2.4.2/nrfxlib/crypto/nrf_cc312_platform/lib/cortex-m33/soft-float/no-interrupts/libnrf_cc312_platform_0.9.17.a && cmd.exe /C "cd /D C:\ncs\v2.4.2\nrf\samples\mcuboot_smp_custom_key\build\mcuboot\zephyr && C:\ncs\toolchains\31f4403e35\opt\bin\cmake.exe -E echo "" c:/ncs/toolchains/31f4403e35/opt/zephyr-sdk/arm-zephyr-eabi/bin/../lib/gcc/arm-zephyr-eabi/12.2.0/../../../../arm-zephyr-eabi/bin/ld.bfd.exe: app/libapp.a(keys.c.obj):C:/ncs/v2.4.2/bootloader/mcuboot/boot/zephyr/keys.c:52: undefined reference to rsa_pub_key' c:/ncs/toolchains/31f4403e35/opt/zephyr-sdk/arm-zephyr-eabi/bin/../lib/gcc/arm-zephyr-eabi/12.2.0/../../../../arm-zephyr-eabi/bin/ld.bfd.exe: app/libapp.a(keys.c.obj):(.rodata.bootutil_keys+0x4): undefined reference torsa_pub_key_len' collect2.exe: error: ld returned 1 exit status ninja: build stopped: subcommand failed. [204/225] Linking C executable zephyr\zephyr_pre0.elf

[208/225] Linking C executable zephyr\zephyr_pre1.elf

[210/225] Building C object zephyr/CMakeFiles/zephyr_final.dir/isr_tables.c.obj FAILED: modules/mcuboot/mcuboot_subimage-prefix/src/mcuboot_subimage-stamp/mcuboot_subimage-build mcuboot/zephyr/zephyr.hex mcuboot/zephyr/zephyr.elf cmd.exe /C "cd /D C:\ncs\v2.4.2\nrf\samples\mcuboot_smp_custom_key\build\mcuboot && C:\ncs\toolchains\31f4403e35\opt\bin\cmake.exe --build . --" [214/225] Building C object zephyr/CMakeFiles/zephyr_final.dir/isr_tables.c.obj ninja: build stopped: subcommand failed. FATAL ERROR: command exited with status 1: 'C:\ncs\toolchains\31f4403e35\opt\bin\cmake.EXE' --build 'C:\ncs\v2.4.2\nrf\samples\mcuboot_smp_custom_key\build'

[snowuyl]

Which key types used by mcuboot_smp_custom_key\custom_key_dir\custom_priv.pem? There are rsa-2048, rsa-3072, ecdsa-p256 and ed25519 key types.

[hellesvik-nordic]

Fixed the error in https://github.com/hellesvik-nordic/samples_for_nrf_connect_sdk/commit/189d6a9122d0f76fc28b9d83d169d4c5abc13390

Which key types used by mcuboot_smp_custom_key\custom_key_dir\custom_priv.pem? There are rsa-2048, rsa-3072, ecdsa-p256 and ed25519 key types.

See The README for the sample for how the key is generated

[snowuyl]

I have fixed this issue by modifying CMakeLists.txt as follows. cmake_minimum_required(VERSION 3.20.0)

set(mcuboot_CONFIG_BOOT_SIGNATURE_TYPE_ECDSA_P256 y) set(mcuboot_CONFIG_BOOT_SIGNATURE_KEY_FILE \"${CMAKE_CURRENT_SOURCE_DIR}/custom_key_dir/custom_priv.pem\")

find_package(Zephyr REQUIRED HINTS $ENV{ZEPHYR_BASE}) project(mcuboot_smp_custom_key)

target_sources(app PRIVATE src/main.c)

[snowuyl]

mcuboot_smp_custom_key.zip