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

CONFIG_M68K (not configurable)

modulename: setup-bus.ko

configname: CONFIG_M68K

Linux Kernel Configuration
└─>M68K
In linux kernel since version 2.6.12  
source code:
drivers/pci/

is selected by
CONFIG_ATA
CONFIG_SND_OSSEMUL
CONFIG_SND_SBAWE_SEQ
CONFIG_SND_EMU10K1
CONFIG_SND_EMU10K1_SEQ
CONFIG_SND_HDA_INTEL
CONFIG_SND_HDA_HWDEP
CONFIG_SND_HDA_PATCH_LOADER
CONFIG_SND_HDA_CODEC_REALTEK
CONFIG_SND_HDA_CODEC_ANALOG
CONFIG_SND_HDA_CODEC_SIGMATEL
CONFIG_SND_HDA_CODEC_VIA
CONFIG_SND_HDA_CODEC_HDMI
CONFIG_SND_HDA_CODEC_CIRRUS
CONFIG_SND_HDA_CODEC_CONEXANT
CONFIG_SND_HDA_CODEC_CA0110
CONFIG_SND_HDA_CODEC_CA0132_DSP
CONFIG_SND_HDA_CODEC_CMEDIA
CONFIG_SND_HDA_GENERIC
CONFIG_SND_HDA_I915
CONFIG_SND_POWERMAC
CONFIG_SND_PXA2XX_LIB
CONFIG_SND_ATMEL_AC97C
CONFIG_SND_DICE
CONFIG_SND_SOC_IMX_PCM_DMA
CONFIG_SND_SOC_MPC8610_HPCD
CONFIG_SND_SOC_P1022_DS
CONFIG_SND_SOC_P1022_RDK
CONFIG_SND_SOC_MPC5200_I2S
CONFIG_SND_SOC_MPC5200_AC97
CONFIG_SND_MPC52xx_SOC_PCM030
CONFIG_SND_MPC52xx_SOC_EFIKA
CONFIG_SND_SOC_IMX_PCM_FIQ
CONFIG_SND_SOC_EUKREA_TLV320
CONFIG_SND_SOC_IMX_SGTL5000
CONFIG_SND_SOC_IMX_SPDIF
CONFIG_SND_SOC_MXS_SGTL5000
CONFIG_SND_PXA2XX_AC97
CONFIG_SND_SOC_SAMSUNG_SMDK_WM8994
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_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_TEGRA_RT5640
CONFIG_SND_SOC_TEGRA_WM8753
CONFIG_SND_SOC_TEGRA_WM8903
CONFIG_SND_SOC_TEGRA_TRIMSLICE
CONFIG_SND_SOC_TEGRA_ALC5632
CONFIG_SND_SOC_TEGRA_MAX98090
CONFIG_SND_SOC_ALL_CODECS
CONFIG_SND_SOC_WM_ADSP
CONFIG_SND_SOC_AD1980
CONFIG_SND_SOC_ADAU1373
CONFIG_SND_SOC_HDMI_CODEC
CONFIG_SND_SOC_SIGMADSP
CONFIG_SND_SOC_TWL4030
CONFIG_SND_SOC_WM9705
CONFIG_SND_SOC_WM9712
CONFIG_SND_SOC_WM9713
CONFIG_BINFMT_ELF_FDPIC