本人菜鸟一枚,在做国嵌实验手册上4-2-5实验网卡驱动移植后,编译u-boot时出现了如下错误,不知道什么原因,恳请高手指点一二,不胜感激!在做网卡驱动移植之前,u-boot是可以正确编译和运行的 et/libnet.a(net.o)(.text+0x1cc): In function `ArpRequest': /home/uboot/u-boot-2009.08/net/net.c:250: undefined reference to `eth_send' net/libnet.a(net.o)(.text+0x29c): In function `NetStartAgain': /home/uboot/u-boot-2009.08/net/net.c:568: undefined reference to `eth_halt' net/libnet.a(net.o)(.text+0x36c): In function `NetSendPacket': /home/uboot/u-boot-2009.08/net/net.c:623: undefined reference to `eth_send' net/libnet.a(net.o)(.text+0x630): In function `NetSendUDPPacket': /home/uboot/u-boot-2009.08/net/net.c:668: undefined reference to `eth_send' net/libnet.a(net.o)(.text+0x7f4): In function `PingTimeout': /home/uboot/u-boot-2009.08/net/net.c:732: undefined reference to `eth_halt' net/libnet.a(net.o)(.text+0xb70): In function `NetReceive': /home/uboot/u-boot-2009.08/net/net.c:1295: undefined reference to `eth_send' net/libnet.a(net.o)(.text+0xdfc):/home/uboot/u-boot-2009.08/net/net.c:1420: undefined reference to `eth_send' net/libnet.a(net.o)(.text+0x11ac): In function `NetLoop': /home/uboot/u-boot-2009.08/net/net.c:342: undefined reference to `eth_halt' net/libnet.a(net.o)(.text+0x11b4):/home/uboot/u-boot-2009.08/net/net.c:346: undefined reference to `eth_init' net/libnet.a(net.o)(.text+0x12e4):/home/uboot/u-boot-2009.08/net/net.c:370: undefined reference to `eth_halt'