s3c44box移植中make 出错??

我要向s3c44box板子上移植uclinux内核，在编译内核的时候，执行命令make ,会产生如下错误，请问这是为什么？？
mmnommu/mmnommu.o fs/fs.o ipc/ipc.o \
drivers/serial/serial.o drivers/char/char.o drivers/block/block.o drivers/misc/misc.o drivers/net/net.o drivers/media/media.o \
net/network.o \
arch/armnommu/lib/lib.a /usr/src/uClinux-dist/linux-2.4.x/lib/lib.a /usr/local/lib/gcc-lib/arm-elf/2.95.3/libgcc.a \
--end-group \
-o linux
drivers/char/char.o: In function `tty_set_ldisc':
/usr/src/uClinux-dist/linux-2.4.x/drivers/char/tty_io.c:320: multiple definition of `s3c44b0x_console_init'
drivers/serial/serial.o:/usr/src/uClinux-dist/linux-2.4.x/drivers/serial/serial_core.c:278: first defined here
make[1]: *** [linux] Error 1
make[1]: Leaving directory `/usr/src/uClinux-dist/linux-2.4.x'
make: *** [linux] Error 1