CONFIG_MACH_ANUBIS is not available for thedefaultarchitecture x86.
Result is shown for architecture arm

Simtec Electronics ANUBIS

modulename: mach-anubis.ko

configname: CONFIG_MACH_ANUBIS

Linux Kernel Configuration
└─>Samsung S3C24XX SoCs (deprecated, see help)
└─>Samsung S3C24XX SoCs Support
└─>Simtec Electronics ANUBIS
In linux kernel since version 2.6.14 (release Date: 2005-10-27)  
Say Y here if you are using the Simtec Electronics ANUBIS
development system