CONFIG_ARCH_RPC is not available for the selected architecture x86.
Result is shown for architecture arm
RiscPC
configname: CONFIG_ARCH_RPC
ARM system type
└─>RiscPC
In linux kernel since version 2.6.12 )
On the Acorn Risc-PC, Linux can support the internal IDE disk and
CD-ROM interface, serial and parallel port, and the floppy drive.
CD-ROM interface, serial and parallel port, and the floppy drive.
depends
CONFIG_MMU or CONFIG_ARCH_MULTI_V4 || CONFIG_ATAGS or CONFIG_CPU_LITTLE_ENDIAN or CONFIG_GCC_VERSION=CONFIG_60000 or CONFIG_GCC_VERSION=CONFIG_90100 or NOT CONFIG_ARCH_FOOTBRIDGE or NOT CONFIG_ARCH_GEMINI or NOT CONFIG_ARCH_MOXART or NOT CONFIG_ARCH_MULTI_V4T or NOT CONFIG_ARCH_MULTI_V5 or NOT CONFIG_ARCH_SA1100 or NOT CONFIG_CC_IS_CLANG