CONFIG_M32R is not available for thedefaultarchitecture x86.
Result is shown for architecture m32r

CONFIG_M32R (not configurable)

configname: CONFIG_M32R

Linux Kernel Configuration
└─>M32R
In linux kernel since version 2.6.12  
selects
CONFIG_HAVE_IDE
CONFIG_HAVE_OPROFILE
CONFIG_INIT_ALL_POSSIBLE
CONFIG_HAVE_KERNEL_GZIP
CONFIG_HAVE_KERNEL_BZIP2
CONFIG_HAVE_KERNEL_LZMA