编译 带usb的padavan 出错！ 三个文件都改设置了！！ 编译不成功！

mol***

/opt/rt-n56u/trunk/configs/templates/k2P_nanousb.config
### Enable USB support
CONFIG_FIRMWARE_ENABLE_USB=y

/opt/rt-n56u/trunk/configs/boards/K2P/kernel-3.4.x.config

CONFIG_USB_ARCH_HAS_OHCI=y

CONFIG_USB_ARCH_HAS_EHCI=y

CONFIG_USB_ARCH_HAS_XHCI=y

CONFIG_USB_SUPPORT =y

/opt/rt-n56u/trunk/configs/boards/K2P/board.mk
CFLAGS += -DBOARD_K2P
BOARD_NUM_USB_PORTS=1


终端会提示一堆和usb相关的 n/m/y (no/??/yes)
这个中间的m是什么意思？
编译出错
开启usb 就编译不成功。。
/opt/rt-n56u/trunk/user/wireless_tools/libiw.so: warning: gethostbyname is obsolescent, use getnameinfo() instead.
web_ex.o.data.rel+0x40c): undefined reference to `ej_get_usb_ports_info'
collect2: ld returned 1 exit status
Makefile:58: recipe for target 'all' failed
make[2]: *** [all] Error 1
make[2]: Leaving directory '/opt/rt-n56u/trunk/user/httpd'
Makefile:226: recipe for target 'all' failed
make[1]: *** [all] Error 2
make[1]: Leaving directory '/opt/rt-n56u/trunk/user'
Makefile:209: recipe for target 'user_only' failed
make: *** [user_only] Error 2

huang***

有现成的，你非要去折腾什么劲。有能力去解决下padavan不能多拨的问题

mol***

我是小白 只有先把别人的固件编译使用成功 才能自己研究别的！

mol***

求大神指点

mol***

求大神指点