MCUBOOT

Hi

I want to add MCUBOOT to my project (which has been well compiled), so I add below configs to prj.conf:

# Enable mcumgr.
CONFIG_MCUMGR=y

# Ensure an MCUboot-compatible binary is generated.
CONFIG_BOOTLOADER_MCUBOOT=y

CONFIG_MCUMGR_SMP_BT=y
CONFIG_MCUMGR_SMP_BT_AUTHEN=n
But I get a lot of CONFIG_XXX undeclared here error, 
How should I track and solve this problem?
Thank you!
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