Hello Wang,

dear all, When I follow the steps to port u-boot to my board according to README ,error appeared in "make".

I didn't change anything about net ,but there are many "undefined reference"error in net.c ,displayed as below: why??

--------> .................. tart-group board/windriver/libwindriver.a cpu/mpc8xx/libmpc8xx.a lib_ppc/libppc.a fs/jffs2/libjffs2.a fs/fdos/libfdos.a fs/fat/libfat.a net/libnet.a disk/libdisk.a rtc/librtc.a dtt/libdtt.a drivers/libdrivers.a drivers/sk98lin/libsk98lin.a post/libpost.a post/cpu/libcpu.a common/libcommon.a lib_generic/libgeneric.a --end- group \ -Map u-boot.map -o u-boot net/libnet.a(net.o): In function `ArpRequest': /home/wang/u-boot-0.4.8/net/net.c:185: undefined reference to `eth_send' net/libnet.a(net.o): In function `NetLoop': /home/wang/u-boot-0.4.8/net/net.c:257: undefined reference to `eth_halt' /home/wang/u-boot-0.4.8/net/net.c:258: undefined reference to `eth_init' /home/wang/u-boot-0.4.8/net/net.c:381: undefined reference to `eth_rx' /home/wang/u-boot-0.4.8/net/net.c:387: undefined reference to `eth_halt' /home/wang/u-boot-0.4.8/net/net.c:424: undefined reference to `eth_halt' net/libnet.a(net.o): In function `NetSendPacket': /home/wang/u-boot-0.4.8/net/net.c:507: undefined reference to `eth_send' net/libnet.a(net.o): In function `NetSendUDPPacket': /home/wang/u-boot-0.4.8/net/net.c:552: undefined reference to `eth_send' net/libnet.a(net.o): In function `NetReceive': /home/wang/u-boot-0.4.8/net/net.c:726: undefined reference to `eth_send' /home/wang/u-boot-0.4.8/net/net.c:752: undefined reference to `eth_send' make: *** [u-boot] Error 1

The errors appear because the functions are not defined - but I guess you know that. So why not share some more information about what kind of board you are compiling for (like the configuration name) so we can actually try to reproduce the problem and help you in a more meaningful way?

Cheers Detlev