I am using the keil to do some experiments recently,but I am always come across these errors, please see below: ****** Build target 'mbed NXP LPC1768'

linking...

.\build\Blinky.axf: Error: L6218E: Undefined symbol EthernetNetIf::setup(int) (referred from main.o).

.\build\Blinky.axf: Error: L6218E: Undefined symbol EthernetNetIf::EthernetNetIf(IpAddr, IpAddr, IpAddr, IpAddr) (referred from main.o).

.\build\Blinky.axf: Error: L6218E: Undefined symbol EthernetNetIf::EthernetNetIf() (referred from main.o).

.\build\Blinky.axf: Error: L6218E: Undefined symbol EthernetNetIf::EthernetNetIf() (referred from main.o).

.\build\Blinky.axf: Error: L6218E: Undefined symbol IpAddr::IpAddr(unsigned char, unsigned char, unsigned char, unsigned char) (referred from main.o).

Target not created *******

Above info is the record,it is appriciate that you can give me some method to manage it. Thank you.

I've the same problem with keil and mbed, but with the FreeRTOS

.\build\Blinky.axf: Error: L6218E: Undefined symbol vParTestToggleLED(unsigned long) (referred from main.o). .\build\Blinky.axf: Error: L6218E: Undefined symbol vParTestInitialise() (referred from main.o). .\build\Blinky.axf: Error: L6218E: Undefined symbol vStartQueuePeekTasks() (referred from main.o). .....

has someone a solution???

regards.