CONFIG_CC_HAS_BRANCH_PROT_PAC_RET is not available for thedefaultarchitecture x86.
Result is shown for architecture arm64

CONFIG_CC_HAS_BRANCH_PROT_PAC_RET (not configurable)

configname: CONFIG_CC_HAS_BRANCH_PROT_PAC_RET

Linux Kernel Configuration
└─>Kernel Features
└─>ARMv8.3 architectural features
└─>CC_HAS_BRANCH_PROT_PAC_RET
In linux kernel since version 5.1 (release Date: 2019-05-05)