default or selected kernelversion does not have config value CONFIG_AS_HAS_NON_CONST_LEB128.
Result is shown for kernelversion 6.9.9

CONFIG_AS_HAS_NON_CONST_LEB128 (not configurable)

configname: CONFIG_AS_HAS_NON_CONST_LEB128

Linux Kernel Configuration
└─>Kernel hacking
└─>Compile-time checks and compiler options
└─>AS_HAS_NON_CONST_LEB128
In linux kernel since version 4.14.326 (release Date: 2023-09-23)