In order to get net_core_app_update.bin and app_update.bin file, I build multicore samples in ncs2.1.0.
unfortunately, I met following problem：
c:/users/cai/user/work/ncs_v2.1.0/toolchains/v2.1.0/opt/zephyr-sdk/arm-zephyr-eabi/bin/../lib/gcc/arm-zephyr-eabi/10.3.0/../../../../arm-zephyr-eabi/bin/ld.exe: app/libapp.a(main.c.obj): in function `main':
C:\v2.1.0\bootloader\mcuboot\boot\zephyr\main.c:660: undefined reference to `pcd_lock_ram'
c:/users/cai/user/work/ncs_v2.1.0/toolchains/v2.1.0/opt/zephyr-sdk/arm-zephyr-eabi/bin/../lib/gcc/arm-zephyr-eabi/10.3.0/../../../../arm-zephyr-eabi/bin/ld.exe: app/libapp.a(loader.c.obj): in function `boot_validated_swap_type':
C:\v2.1.0\bootloader\mcuboot\boot\bootutil\src\loader.c:987: undefined reference to `pcd_network_core_update'
but I found this in the build directory：
What can I do to fix this problem?
