[U-Boot] building enc28j60 for omap3: undefined references

[jacopo mondi]

Hi all,
I'm trying enabling enc2j60 in order to use tftp with SPI-Ethernet
enc28j60 and beagleboard rev C3.
When building u-boot some functions referred by enc28j60.c remain
undefined.

drivers/net/libnet.o: In function `enc28j60_initialize':
u-boot/drivers/net/enc28j60.c:973:
undefined reference to `eth_register' drivers/net/libnet.o: In function
`enc_receive': u-boot/drivers/net/enc28j60.c:489:
undefined reference to `NetReceive' drivers/net/libnet.o: In function
`enc_recv': u-boot/drivers/net/enc28j60.c:868:
undefined reference to `NetRxPackets'

Driver gets compiled and linked without warnings nor errors:

arm-angstrom-linux-gnueabi-gcc  -g  -Os   -fno-common -ffixed-r8
-msoft-float   -D__KERNEL__ -DCONFIG_SYS_TEXT_BASE=0x80008000
-Iu-boot/include -fno-builtin
-ffreestanding -nostdinc
-isystem cross/armv7a/lib/gcc/arm-angstrom-linux-gnueabi/4.3.1/include
-pipe  -DCONFIG_ARM -D__ARM__ -marm  -mabi=aapcs-linux
-mno-thumb-interwork -march=armv5 -Wall -Wstrict-prototypes
-fno-stack-protector   -o enc28j60.o enc28j60.c -c
arm-angstrom-linux-gnueabi-ld  -r -o libnet.o  enc28j60.o

I'm using last u-boot, cloned from master branch yesterday.
Is my toolchain broken?

thank you
	j