Hello, I am seeing these errors: [ 3825s] AR built-in.a [ 3827s] AR vmlinux.a [ 3835s] LD vmlinux.o [ 3835s] OBJCOPY modules.builtin.modinfo [ 3835s] GEN modules.builtin [ 3835s] GEN .vmlinux.objs [ 3848s] MODPOST Module.symvers [ 3848s] CC .vmlinux.export.o [ 3849s] UPD include/generated/utsversion.h [ 3849s] CC init/version-timestamp.o [ 3849s] LD .tmp_vmlinux.btf [ 3864s] ld: drivers/video/fbdev/offb.o:(.data.rel.ro+0x58): undefined reference to `cfb_fillrect' [ 3864s] ld: drivers/video/fbdev/offb.o:(.data.rel.ro+0x60): undefined reference to `cfb_copyarea' [ 3864s] ld: drivers/video/fbdev/offb.o:(.data.rel.ro+0x68): undefined reference to `cfb_imageblit' cfb_fillrect is provided by drivers/video/fbdev/core/cfbfillrect.c It is compiled when CONFIG_FB_CFB_FILLRECT drivers/video/fbdev/core/Makefile:obj-$(CONFIG_FB_CFB_FILLRECT) += cfbfillrect.o drivers/video/fbdev/Makefile:obj-$(CONFIG_FB_OF) += offb.o is compiled when CONFIG_FB_OF It selects CONFIG_FB_CFB_FILLRECT config FB_OF bool "Open Firmware frame buffer device support" depends on (FB = y) && PPC && (!PPC_PSERIES || PCI) select APERTURE_HELPERS select FB_CFB_FILLRECT select FB_CFB_COPYAREA select FB_CFB_IMAGEBLIT select FB_MACMODES The config has FB_OF built-in and FB_CFB_FILLRECT modular config/ppc64le/vanilla:CONFIG_FB_CFB_FILLRECT=m config/ppc64le/vanilla:CONFIG_FB_CFB_COPYAREA=m config/ppc64le/vanilla:CONFIG_FB_CFB_IMAGEBLIT=m config/ppc64le/vanilla:CONFIG_FB_OF=y It only depends on FB which mut be built-in for FB_OF config FB_CFB_FILLRECT tristate depends on FB Is select in kconfig broken? Attachnig the config in question. Thanks Michal