CONFIG_M68K is not available for thedefaultarchitecture x86.
Result is shown for architecture m68k

CONFIG_M68K (not configurable)

configname: CONFIG_M68K

Linux Kernel Configuration
└─>M68K
In linux kernel since version 2.6.12  
is selected by
CONFIG_SND_OSSEMUL
CONFIG_SND_SBAWE_SEQ
CONFIG_SND_EMU10K1_SEQ
CONFIG_SND_HDA_CODEC_ANALOG
CONFIG_SND_HDA_I915
CONFIG_SND_ATMEL_AC97C
CONFIG_SND_USB_PODHD
CONFIG_SND_DICE
CONFIG_SND_SOC_FSL_SSI
CONFIG_SND_SOC_FSL_SPDIF
CONFIG_SND_SOC_IMX_ES8328
CONFIG_SND_SOC_IMX_SGTL5000
CONFIG_SND_SOC_FSL_ASOC_CARD
CONFIG_SND_JZ4740_SOC_I2S
CONFIG_SND_SOC_INTEL_SST
CONFIG_SND_SOC_INTEL_HASWELL_MACH
CONFIG_SND_SOC_INTEL_BROADWELL_MACH
CONFIG_SND_SOC_INTEL_CHT_BSW_RT5672_MACH
CONFIG_SND_SOC_INTEL_CHT_BSW_RT5645_MACH
CONFIG_SND_SOC_INTEL_CHT_BSW_MAX98090_TI_MACH
CONFIG_SND_MMP_SOC
CONFIG_SND_PXA2XX_AC97
CONFIG_SND_PXA2XX_SOC_EM_X270
CONFIG_SND_SOC_LPASS_CPU
CONFIG_SND_SOC_LPASS_PLATFORM
CONFIG_SND_SOC_LPASS_IPQ806X
CONFIG_SND_SOC_LPASS_APQ8016
CONFIG_SND_SOC_STORM
CONFIG_SND_SOC_APQ8016_SBC
CONFIG_SND_S3C2412_SOC_I2S
CONFIG_SND_SOC_SAMSUNG_NEO1973_WM8753
CONFIG_SND_SOC_SAMSUNG_JIVE_WM8750
CONFIG_SND_SOC_SAMSUNG_SMDK_WM8580
CONFIG_SND_SOC_SAMSUNG_SMDK_WM8994
CONFIG_SND_SOC_SAMSUNG_S3C24XX_UDA134X
CONFIG_SND_SOC_SAMSUNG_SIMTEC_TLV320AIC23
CONFIG_SND_SOC_SAMSUNG_SIMTEC_HERMES
CONFIG_SND_SOC_SAMSUNG_H1940_UDA1380
CONFIG_SND_SOC_SAMSUNG_RX1950_UDA1380
CONFIG_SND_SOC_SMARTQ
CONFIG_SND_SOC_SAMSUNG_SMDK_SPDIF
CONFIG_SND_SOC_SMDK_WM8994_PCM
CONFIG_SND_SOC_SPEYSIDE
CONFIG_SND_SOC_TOBERMORY
CONFIG_SND_SOC_BELLS
CONFIG_SND_SOC_LOWLAND
CONFIG_SND_SOC_LITTLEMILL
CONFIG_SND_SOC_SNOW
CONFIG_SND_SOC_SH4_HAC
CONFIG_SND_SOC_SH4_FSI
CONFIG_SND_SOC_SH4_SIU
CONFIG_SND_SOC_RCAR
CONFIG_SND_SH7760_AC97
CONFIG_SND_SIU_MIGOR
CONFIG_SND_SOC_HDMI_CODEC