Hi,
I am looking for help, we are moving to the 3.2 of zephyr. All our projects are custom boards that run on the previous zephyr version (2.5).
When we compile our projects with the option sysbuild the path of the custom board is not found.

To test, I am using the hello_world project into zephyr/samples/hello_world with testing board called plank which is a nrf52840DK. To create the custom board, I followed the instruction from this page: https://docs.zephyrproject.org/latest/hardware/porting/board_porting.html#create-your-board-directory
Below, you can see the result of the compilation when the sysbuild is inactiv :
west build -c -p auto -b plank -d build/hello_world --no-sysbuild zephyr/samples/hello_world/ -- -DBOARD_ROOT=/home/viny/Workspace/01-Repository/zephyr-3.2.0/zephyrproject/test/
-- west build: generating a build system
Loading Zephyr default modules (Zephyr base).
-- Application: /home/viny/Workspace/01-Repository/zephyr-3.2.0/zephyrproject/zephyr/samples/hello_world
-- CMake version: 3.22.1
-- Found Python3: /usr/bin/python3.10 (found suitable exact version "3.10.6") found components: Interpreter
-- Cache files will be written to: /home/viny/.cache/zephyr
-- Zephyr version: 3.2.99 (/home/viny/Workspace/01-Repository/zephyr-3.2.0/zephyrproject/zephyr)
-- Found west (found suitable version "0.14.0", minimum required is "0.7.1")
-- Board: plank
-- ZEPHYR_TOOLCHAIN_VARIANT not set, trying to locate Zephyr SDK
-- Found host-tools: zephyr 0.15.2 (/home/viny/Workspace/01-Repository/zephyr-3.2.0/zephyr-sdk-0.15.2)
-- Found toolchain: zephyr 0.15.2 (/home/viny/Workspace/01-Repository/zephyr-3.2.0/zephyr-sdk-0.15.2)
-- Found Dtc: /home/viny/Workspace/01-Repository/zephyr-3.2.0/zephyr-sdk-0.15.2/sysroots/x86_64-pokysdk-linux/usr/bin/dtc (found suitable version "1.6.0", minimum required is "1.4.6")
-- Found BOARD.dts: /home/viny/Workspace/01-Repository/zephyr-3.2.0/zephyrproject/test/boards/arm/plank/plank.dts
-- Generated zephyr.dts: /home/viny/Workspace/01-Repository/zephyr-3.2.0/zephyrproject/build/hello_world/zephyr/zephyr.dts
-- Generated devicetree_generated.h: /home/viny/Workspace/01-Repository/zephyr-3.2.0/zephyrproject/build/hello_world/zephyr/include/generated/devicetree_generated.h
-- Including generated dts.cmake file: /home/viny/Workspace/01-Repository/zephyr-3.2.0/zephyrproject/build/hello_world/zephyr/dts.cmake
/home/viny/Workspace/01-Repository/zephyr-3.2.0/zephyrproject/build/hello_world/zephyr/zephyr.dts:71.25-76.5: Warning (unique_unit_address_if_enabled): /soc/clock@40000000: duplicate unit-address (also used in node /soc/power@40000000)
/home/viny/Workspace/01-Repository/zephyr-3.2.0/zephyrproject/build/hello_world/zephyr/zephyr.dts:331.21-335.5: Warning (unique_unit_address_if_enabled): /soc/acl@4001e000: duplicate unit-address (also used in node /soc/flash-controller@4001e000)
Parsing /home/viny/Workspace/01-Repository/zephyr-3.2.0/zephyrproject/zephyr/Kconfig
Loaded configuration '/home/viny/Workspace/01-Repository/zephyr-3.2.0/zephyrproject/test/boards/arm/plank/plank_defconfig'
Merged configuration '/home/viny/Workspace/01-Repository/zephyr-3.2.0/zephyrproject/zephyr/samples/hello_world/prj.conf'
Configuration saved to '/home/viny/Workspace/01-Repository/zephyr-3.2.0/zephyrproject/build/hello_world/zephyr/.config'
Kconfig header saved to '/home/viny/Workspace/01-Repository/zephyr-3.2.0/zephyrproject/build/hello_world/zephyr/include/generated/autoconf.h'
-- The C compiler identification is GNU 12.1.0
-- The CXX compiler identification is GNU 12.1.0
-- The ASM compiler identification is GNU
-- Found assembler: /home/viny/Workspace/01-Repository/zephyr-3.2.0/zephyr-sdk-0.15.2/arm-zephyr-eabi/bin/arm-zephyr-eabi-gcc
-- Configuring done
-- Generating done
-- Build files have been written to: /home/viny/Workspace/01-Repository/zephyr-3.2.0/zephyrproject/build/hello_world
-- west build: building application
[1/163] Preparing syscall dependency handling
[2/163] Generating include/generated/version.h
-- Zephyr version: 3.2.99 (/home/viny/Workspace/01-Repository/zephyr-3.2.0/zephyrproject/zephyr), build: zephyr-v3.2.0-2976-gdfed735ee27e
[153/163] Linking C executable zephyr/zephyr_pre0.elf
[157/163] Linking C executable zephyr/zephyr_pre1.elf
[163/163] Linking C executable zephyr/zephyr.elf
Memory region Used Size Region Size %age Used
FLASH: 19902 B 1 MB 1.90%
RAM: 5632 B 256 KB 2.15%
IDT_LIST: 0 GB 2 KB 0.00%
Below you can see the result of the compilation when the sysbuild is activated :
west build -c -p auto -b plank -d build/hello_world --sysbuild zephyr/samples/hello_world/ -- -DSB_CONFIG_BOOTLOADER_MCUBOOT=y -DBOARD_ROOT=/home/viny/Workspace/01-Repository/zephyr-3.2.0/zephyrproject/test/ -- west build: generating a build system Loading Zephyr module(s) (Zephyr base): extensions sysbuild_extensions python west root zephyr_module boards shields sysbuild_kconfig -- Found Python3: /usr/bin/python3.10 (found suitable exact version "3.10.6") found components: Interpreter -- Cache files will be written to: /home/viny/.cache/zephyr -- Found west (found suitable version "0.14.0", minimum required is "0.7.1") -- Board: plank Parsing /home/viny/Workspace/01-Repository/zephyr-3.2.0/zephyrproject/zephyr/share/sysbuild/Kconfig Loaded configuration '/home/viny/Workspace/01-Repository/zephyr-3.2.0/zephyrproject/build/hello_world/empty.conf' Merged configuration '/home/viny/Workspace/01-Repository/zephyr-3.2.0/zephyrproject/build/hello_world/empty.conf' Merged configuration '/home/viny/Workspace/01-Repository/zephyr-3.2.0/zephyrproject/build/hello_world/zephyr/misc/generated/extra_kconfig_options.conf' Merged configuration '/home/viny/Workspace/01-Repository/zephyr-3.2.0/zephyrproject/build/hello_world/empty.conf' Configuration saved to '/home/viny/Workspace/01-Repository/zephyr-3.2.0/zephyrproject/build/hello_world/zephyr/.config' Kconfig header saved to '/home/viny/Workspace/01-Repository/zephyr-3.2.0/zephyrproject/build/hello_world/autoconf.h' -- ********************************* * Running CMake for hello_world * ********************************* Loading Zephyr default modules (Zephyr base). -- Application: /home/viny/Workspace/01-Repository/zephyr-3.2.0/zephyrproject/zephyr/samples/hello_world -- CMake version: 3.22.1 -- Found Python3: /usr/bin/python3.10 (found suitable exact version "3.10.6") found components: Interpreter -- Cache files will be written to: /home/viny/.cache/zephyr -- Zephyr version: 3.2.99 (/home/viny/Workspace/01-Repository/zephyr-3.2.0/zephyrproject/zephyr) -- Found west (found suitable version "0.14.0", minimum required is "0.7.1") -- Board: plank No board named 'plank' found. Please choose one of the following boards: arc: em_starterkit em_starterkit_em11d em_starterkit_em7d em_starterkit_em7d_v22 emsdp emsdp_em4 emsdp_em5d emsdp_em6 emsdp_em7d emsdp_em7d_esp emsdp_em9d hsdk hsdk_2cores iotdk nsim_em nsim_em11d nsim_em7d_v22 nsim_hs nsim_hs5x nsim_hs5x_smp nsim_hs6x nsim_hs6x_smp nsim_hs_flash_xip nsim_hs_mpuv6 nsim_hs_smp nsim_hs_sram nsim_sem nsim_sem_mpu_stack_guard qemu_arc_em qemu_arc_hs qemu_arc_hs5x qemu_arc_hs6x qemu_arc_hs_xip arm: 96b_aerocore2 96b_argonkey 96b_avenger96 96b_carbon 96b_carbon_nrf51 96b_meerkat96 96b_neonkey 96b_nitrogen 96b_stm32_sensor_mez 96b_wistrio actinius_icarus actinius_icarus_bee actinius_icarus_bee_ns actinius_icarus_ns actinius_icarus_som actinius_icarus_som_ns adafruit_feather_m0_basic_proto adafruit_feather_m0_lora adafruit_feather_nrf52840 adafruit_feather_stm32f405 adafruit_itsybitsy_m4_express adafruit_itsybitsy_nrf52840 adafruit_kb2040 adafruit_trinket_m0 arduino_due arduino_mkrzero arduino_nano_33_ble arduino_nano_33_ble_sense arduino_nano_33_iot arduino_nicla_sense_me arduino_portenta_h7_m4 arduino_portenta_h7_m7 arduino_zero arty_a7_arm_designstart_m1 arty_a7_arm_designstart_m3 ast1030_evb atsamc21n_xpro atsamd20_xpro atsamd21_xpro atsame54_xpro atsaml21_xpro atsamr21_xpro atsamr34_xpro b_g474e_dpow1 b_l072z_lrwan1 b_l4s5i_iot01a b_u585i_iot02a b_u585i_iot02a_ns bbc_microbit bbc_microbit_v2 bcm958401m2 bcm958402m2_m7 bl5340_dvk_cpuapp bl5340_dvk_cpuapp_ns bl5340_dvk_cpunet bl652_dvk bl653_dvk bl654_dvk bl654_sensor_board bl654_usb black_f407ve black_f407zg_pro blackpill_f401cc blackpill_f401ce blackpill_f411ce blueclover_plt_demo_v2_nrf52832 bt510 bt610 cc1352r1_launchxl cc1352r_sensortag cc26x2r1_launchxl cc3220sf_launchxl cc3235sf_launchxl circuitdojo_feather_nrf9160 circuitdojo_feather_nrf9160_ns colibri_imx7d_m4 contextualelectronics_abc cy8ckit_062_ble_m0 cy8ckit_062_ble_m4 cy8ckit_062_wifi_bt_m0 cy8ckit_062_wifi_bt_m4 cyclonev_socdk da1469x_dk_pro decawave_dwm1001_dev degu_evk disco_l475_iot1 dragino_lsn50 dragino_nbsn95 ebyte_e73_tbb_nrf52832 efm32gg_slwstk6121a efm32gg_stk3701a efm32hg_slstk3400a efm32pg_stk3401a efm32pg_stk3402a efm32pg_stk3402a_jg efm32wg_stk3800 efr32_radio_brd4104a efr32_radio_brd4180a efr32_radio_brd4250b efr32_radio_brd4255a efr32bg_sltb010a efr32mg_sltb004a faze frdm_k22f frdm_k64f frdm_k82f frdm_kl25z frdm_kw41z fvp_baser_aemv8r_aarch32 gd32e103v_eval gd32e507v_start gd32e507z_eval gd32f350r_eval gd32f403z_eval gd32f407v_start gd32f450i_eval gd32f450v_start gd32f450z_eval gd32f470i_eval gd32l233r_eval google_dragonclaw google_kukui hexiwear_k64 hexiwear_kw40z holyiot_yj16019 ip_k66f legend lora_e5_dev_board lpcxpresso11u68 lpcxpresso51u68 lpcxpresso54114_m0 lpcxpresso54114_m4 lpcxpresso55s06 lpcxpresso55s16 lpcxpresso55s28 lpcxpresso55s36 lpcxpresso55s69_cpu0 lpcxpresso55s69_cpu1 lpcxpresso55s69_ns mec1501modular_assy6885 mec15xxevb_assy6853 mec172xevb_assy6906 mec172xmodular_assy6930 mec2016evb_assy6797 mercury_xu mg100 mikroe_clicker_2 mikroe_mini_m4_for_stm32 mimx8mm_evk mimx8mp_evk_ddr mimx8mp_evk_itcm mimx8mq_evk_cm4 mimxrt1010_evk mimxrt1015_evk mimxrt1020_evk mimxrt1024_evk mimxrt1050_evk mimxrt1050_evk_qspi mimxrt1060_evk mimxrt1060_evk_hyperflash mimxrt1060_evkb mimxrt1064_evk mimxrt1160_evk_cm4 mimxrt1160_evk_cm7 mimxrt1170_evk_cm4 mimxrt1170_evk_cm7 mimxrt595_evk_cm33 mimxrt685_evk_cm33 mm_feather mm_swiftio mps2_an385 mps2_an521 mps2_an521_ns mps2_an521_remote mps3_an547 mps3_an547_ns msp_exp432p401r_launchxl npcx7m6fb_evb npcx9m6f_evb nrf21540dk_nrf52840 nrf51_ble400 nrf51_blenano nrf51_vbluno51 nrf51dk_nrf51422 nrf51dongle_nrf51422 nrf52832_mdk nrf52833dk_nrf52820 nrf52833dk_nrf52833 nrf52840_blip nrf52840_mdk nrf52840_mdk_usb_dongle nrf52840_papyr nrf52840dk_nrf52811 nrf52840dk_nrf52840 nrf52840dongle_nrf52840 nrf52_adafruit_feather nrf52_blenano2 nrf52_sparkfun nrf52_vbluno52 nrf52dk_nrf52805 nrf52dk_nrf52810 nrf52dk_nrf52832 nrf5340dk_nrf5340_cpuapp nrf5340dk_nrf5340_cpuapp_ns nrf5340dk_nrf5340_cpunet nrf9160_innblue21 nrf9160_innblue21_ns nrf9160_innblue22 nrf9160_innblue22_ns nrf9160dk_nrf52840 nrf9160dk_nrf9160 nrf9160dk_nrf9160_ns nucleo_f030r8 nucleo_f031k6 nucleo_f070rb nucleo_f091rc nucleo_f103rb nucleo_f207zg nucleo_f302r8 nucleo_f303k8 nucleo_f303re nucleo_f334r8 nucleo_f401re nucleo_f410rb nucleo_f411re nucleo_f412zg nucleo_f413zh nucleo_f429zi nucleo_f446re nucleo_f446ze nucleo_f746zg nucleo_f756zg nucleo_f767zi nucleo_g031k8 nucleo_g071rb nucleo_g0b1re nucleo_g431rb nucleo_g474re nucleo_h723zg nucleo_h743zi nucleo_h745zi_q_m4 nucleo_h745zi_q_m7 nucleo_h753zi nucleo_h7a3zi_q nucleo_l011k4 nucleo_l031k6 nucleo_l053r8 nucleo_l073rz nucleo_l152re nucleo_l412rb_p nucleo_l432kc nucleo_l433rc_p nucleo_l452re nucleo_l452re_p nucleo_l476rg nucleo_l496zg nucleo_l4a6zg nucleo_l4r5zi nucleo_l552ze_q nucleo_l552ze_q_ns nucleo_u575zi_q nucleo_wb55rg nucleo_wl55jc nuvoton_pfm_m487 olimex_lora_stm32wl_devkit olimex_stm32_e407 olimex_stm32_h103 olimex_stm32_h405 olimex_stm32_h407 olimex_stm32_p405 olimexino_stm32 pan1770_evb pan1780_evb pan1781_evb pan1782_evb particle_argon particle_boron particle_xenon pico_pi_m4 pinetime_devkit0 pinnacle_100_dvk qemu_cortex_a9 qemu_cortex_m0 qemu_cortex_m3 qemu_cortex_r5 qomu quick_feather rak4631_nrf52840 rak5010_nrf52840 rcar_h3_salvatorx_cr7 rcar_h3ulcb_cr7 rddrone_fmuk66 reel_board reel_board_v2 rm1xx_dvk ronoth_lodev rpi_pico ruuvi_ruuvitag s32z270dc2_rtu0_r52 s32z270dc2_rtu1_r52 sam4e_xpro sam4l_ek sam4s_xplained sam_e70_xplained sam_e70b_xplained sam_v71_xult sam_v71b_xult scobc_module1 seeeduino_xiao segger_trb_stm32f407 sensortile_box serpente sparkfun_thing_plus_nrf9160 sparkfun_thing_plus_nrf9160_ns steval_fcu001v1 stm3210c_eval stm32373c_eval stm32_min_dev_black stm32_min_dev_blue stm32f030_demo stm32f072_eval stm32f072b_disco stm32f0_disco stm32f103_mini stm32f3_disco stm32f3_seco_d23 stm32f401_mini stm32f411e_disco stm32f412g_disco stm32f429i_disc1 stm32f469i_disco stm32f4_disco stm32f723e_disco stm32f746g_disco stm32f7508_dk stm32f769i_disco stm32g0316_disco stm32g071b_disco stm32g081b_eval stm32h735g_disco stm32h747i_disco_m4 stm32h747i_disco_m7 stm32h7b3i_dk stm32l1_disco stm32l476g_disco stm32l496g_disco stm32l562e_dk stm32l562e_dk_ns stm32mp157c_dk2 stm32vl_disco swan_r5 tdk_robokit1 teensy40 teensy41 thingy52_nrf52832 thingy53_nrf5340_cpuapp thingy53_nrf5340_cpuapp_ns thingy53_nrf5340_cpunet twr_ke18f twr_kv58f220m ubx_bmd300eval_nrf52832 ubx_bmd330eval_nrf52810 ubx_bmd340eval_nrf52840 ubx_bmd345eval_nrf52840 ubx_bmd360eval_nrf52811 ubx_bmd380eval_nrf52840 ubx_evkannab1_nrf52832 ubx_evkninab1_nrf52832 ubx_evkninab3_nrf52840 ubx_evkninab4_nrf52833 udoo_neo_full_m4 usb_kw24d512 v2m_beetle v2m_musca_b1 v2m_musca_b1_ns v2m_musca_s1 v2m_musca_s1_ns warp7_m4 waveshare_open103z we_ophelia1ev_nrf52805 we_proteus2ev_nrf52832 we_proteus3ev_nrf52840 xiao_ble xmc45_relax_kit zybo arm64: bcm958402m2_a72 fvp_base_revc_2xaemv8a fvp_base_revc_2xaemv8a_smp_ns fvp_baser_aemv8r fvp_baser_aemv8r_smp intel_socfpga_agilex_socdk khadas_edgev mimx8mm_evk_a53 mimx8mm_evk_a53_smp mimx8mn_evk_a53 mimx8mn_evk_a53_smp mimx8mp_evk_a53 mimx8mp_evk_a53_smp mimx93_evk_a55 nxp_ls1046ardb nxp_ls1046ardb_smp_2cores nxp_ls1046ardb_smp_4cores qemu_cortex_a53 qemu_cortex_a53_smp qemu_cortex_a53_xip qemu_kvm_arm64 xenvm xenvm_gicv3 mips: qemu_malta qemu_malta_be nios2: altera_max10 qemu_nios2 posix: native_posix native_posix_64 nrf52_bsim riscv: adp_xc7k_ae350 beaglev_starlight_jh7100 esp32c3_devkitm gd32vf103c_starter gd32vf103v_eval hifive1 hifive1_revb hifive_unleashed hifive_unmatched icev_wireless it8xxx2_evb litex_vexriscv longan_nano longan_nano_lite m2gl025_miv mpfs_icicle neorv32 qemu_riscv32 qemu_riscv32_smp qemu_riscv32_xip qemu_riscv32e qemu_riscv64 qemu_riscv64_smp rv32m1_vega_ri5cy rv32m1_vega_zero_riscy sparkfun_red_v_things_plus tlsr9518adk80d xiao_esp32c3 sparc: generic_leon3 gr716a_mini qemu_leon3 x86: acrn acrn_ehl_crb ehl_crb ehl_crb_sbl qemu_x86 qemu_x86_64 qemu_x86_64_nokpti qemu_x86_lakemont qemu_x86_nokpti qemu_x86_nommu qemu_x86_nopae qemu_x86_tiny qemu_x86_virt qemu_x86_xip rpl_crb up_squared xtensa: esp32 esp32_ethernet_kit esp32_net esp32s2_franzininho esp32s2_saola esp_wrover_kit heltec_wifi_lora32_v2 intel_adsp_ace15_mtpm intel_adsp_cavs15 intel_adsp_cavs18 intel_adsp_cavs20 intel_adsp_cavs20_jsl intel_adsp_cavs25 intel_adsp_cavs25_tgph nxp_adsp_imx8 nxp_adsp_imx8m nxp_adsp_imx8x odroid_go olimex_esp32_evb qemu_xtensa xt-sim CMake Error at /home/viny/Workspace/01-Repository/zephyr-3.2.0/zephyrproject/zephyr/cmake/modules/boards.cmake:163 (message): Invalid BOARD; see above. Call Stack (most recent call first): /home/viny/Workspace/01-Repository/zephyr-3.2.0/zephyrproject/zephyr/cmake/modules/zephyr_default.cmake:113 (include) /home/viny/Workspace/01-Repository/zephyr-3.2.0/zephyrproject/zephyr/share/zephyr-package/cmake/ZephyrConfig.cmake:66 (include) /home/viny/Workspace/01-Repository/zephyr-3.2.0/zephyrproject/zephyr/share/zephyr-package/cmake/ZephyrConfig.cmake:92 (include_boilerplate) CMakeLists.txt:5 (find_package) -- Configuring incomplete, errors occurred! CMake Error at cmake/modules/sysbuild_extensions.cmake:243 (message): CMake configure failed for Zephyr project: hello_world Location: /home/viny/Workspace/01-Repository/zephyr-3.2.0/zephyrproject/zephyr/samples/hello_world Call Stack (most recent call first): CMakeLists.txt:59 (ExternalZephyrProject_Add) -- Configuring incomplete, errors occurred! See also "/home/viny/Workspace/01-Repository/zephyr-3.2.0/zephyrproject/build/hello_world/CMakeFiles/CMakeOutput.log". FATAL ERROR: command exited with status 1: /usr/bin/cmake -DWEST_PYTHON=/usr/bin/python3 -B/home/viny/Workspace/01-Repository/zephyr-3.2.0/zephyrproject/build/hello_world -GNinja -DBOARD=plank -DSB_CONFIG_BOOTLOADER_MCUBOOT=y -DBOARD_ROOT=/home/viny/Workspace/01-Repository/zephyr-3.2.0/zephyrproject/test/ -S/home/viny/Workspace/01-Repository/zephyr-3.2.0/zephyrproject/zephyr/share/sysbuild -DAPP_DIR:PATH=/home/viny/Workspace/01-Repository/zephyr-3.2.0/zephyrproject/zephyr/samples/hello_world
I tried to change -DBOARD_ROOT with -Dhello_world_BOARD_ROOT or -Dhello_world_BOARD_ROOT_CONFIG or -Dhello_world_CONFIG_BOARD_ROOT but I got the same error.
Is someone able to explain to me how to do it ?
Thank you,
Viny.