make CFLAGS="-D__KERNEL__ -I/usr/src/2.5/linux-2.5.12/include -Wall -Wstrict-prototypes -Wno-trigraphs -O2 -fno-strict-aliasing -fno-common -fomit-frame-pointer -pipe -mpreferred-stack-boundary=2 -march=athlon  " -C  arch/i386/lib
make[1]: Entering directory `/usr/src/2.5/linux-2.5.12/arch/i386/lib'
make all_targets
make[2]: Entering directory `/usr/src/2.5/linux-2.5.12/arch/i386/lib'
make[2]: Nothing to be done for `all_targets'.
make[2]: Leaving directory `/usr/src/2.5/linux-2.5.12/arch/i386/lib'
make[1]: Leaving directory `/usr/src/2.5/linux-2.5.12/arch/i386/lib'
ld -m elf_i386 -T /usr/src/2.5/linux-2.5.12/arch/i386/vmlinux.lds -e stext arch/i386/kernel/head.o arch/i386/kernel/init_task.o init/main.o init/version.o init/do_mounts.o \
	--start-group \
	arch/i386/kernel/kernel.o arch/i386/mm/mm.o kernel/kernel.o mm/mm.o fs/fs.o ipc/ipc.o \
	/usr/src/2.5/linux-2.5.12/arch/i386/lib/lib.a /usr/src/2.5/linux-2.5.12/lib/lib.o /usr/src/2.5/linux-2.5.12/arch/i386/lib/lib.a \
	 drivers/base/base.o drivers/char/char.o drivers/block/block.o drivers/misc/misc.o drivers/net/net.o drivers/media/media.o drivers/char/drm/drm.o drivers/atm/atm.o drivers/ide/idedriver.o drivers/cdrom/driver.o drivers/pci/driver.o drivers/pnp/pnp.o drivers/video/video.o drivers/md/mddev.o \
	net/network.o \
	--end-group \
	-o vmlinux
drivers/block/block.o: In function `ramdisk_updatepage':
drivers/block/block.o(.text+0xc514): undefined reference to `mark_buffer_uptodate'
make: *** [vmlinux] Error 1