It works now, i just had to specify the EthernetNetIf.ar file in the linker. It contains all the .o files, and hence the error.

Hi! I am try compile example NetServices_HelloWorld (http://mbed.org/cookbook/NetServices) but the compiler says: <<quote>> .\build\project1.axf: Error: L6647E: The virtual function elimination information for .text(net.o) incorrectly indicates that section .constdata__ZTV13EthernetNetIf(ethernetnetif.o), offset 40 is a relocation (to a virtual function or RTTI), but there is no relocation at that offset. <</quote>> How to solve this problem? "Keil mbed Hello World Project" compiled without problem.

I wonder could you clarify exactly how you did this ? I think getting the EtherNetIf.ar file recognised is my issue too. K <<quote shobhitkukreti>> It works now, i just had to specify the EthernetNetIf.ar file in the linker. It contains all the .o files, and hence the error. <</quote>>

.\build\deneme.axf: Error: L6218E: Undefined symbol TextLCD::locate(int, int) (referred from main.o).
.\build\deneme.axf: Error: L6218E: Undefined symbol TextLCD::TextLCD(PinName, PinName, PinName, PinName, PinName, PinName, TextLCD::LCDType) (referred from main.o).
.\build\deneme.axf: Error: L6218E: Undefined symbol vtable for TextLCD (referred from main.o).

#include "mbed.h"
#include "TextLCD.h" 
Timer timer;
DigitalOut led(LED1);
long int begin, end,end1,end2,end3,end4,end5,times;
TextLCD lcd(p16, p15, p20, p19, p18, p17,TextLCD::LCD20x4);
int main() 
{
    timer.start();
    begin = timer.read_us();
    led = !led;
    end = timer.read_us();
    lcd.printf("Led Duration : %Ld us",end-begin);
    end1 = timer.read_us();
    lcd.printf("\nLCD Write : %Ld us",end1-end);
    end5=timer.read_us();
    lcd.locate(0,2);
    end2=timer.read_us();
    lcd.printf("LCD Locate : %Ld us",end2-end5);
    end3=timer.read_us();
    times=end-begin;
    end4=timer.read_us();
    lcd.printf("\nCalculation : %Ld us",end4-end3);
    wait(2);
}

Hello folks, I'm using mbed LPC1768 prototyping board. Nowadays I'm trying to compile my mbed programs with uVision 4.21, working on a 20x4LCD example. I've successfully compiled my program with online mbeed compiler but when I'm trying to compile my program at uVision 4.21, it throws 3 errors like; <<code>> .\build\deneme.axf: Error: L6218E: Undefined symbol TextLCD::locate(int, int) (referred from main.o). .\build\deneme.axf: Error: L6218E: Undefined symbol TextLCD::TextLCD(PinName, PinName, PinName, PinName, PinName, PinName, TextLCD::LCDType) (referred from main.o). .\build\deneme.axf: Error: L6218E: Undefined symbol vtable for TextLCD (referred from main.o). <</code>> At the beggining, I've downloaded apnt207.zip file and read apnt207.pdf from begginning to the end. I've applied all instructions step by step, so I don't think that I've made a mistake when I was configuring mbed settings. I've also included TextLCD.h library in my program but nothing changed. What sould posibbly gives this errors? Am I doing mistakes when I'm adding libraries? My Code : <<code>> #include "mbed.h" #include "TextLCD.h" Timer timer; DigitalOut led(LED1); long int begin, end,end1,end2,end3,end4,end5,times; TextLCD lcd(p16, p15, p20, p19, p18, p17,TextLCD::LCD20x4); int main() { timer.start(); begin = timer.read_us(); led = !led; end = timer.read_us(); lcd.printf("Led Duration : %Ld us",end-begin); end1 = timer.read_us(); lcd.printf("\nLCD Write : %Ld us",end1-end); end5=timer.read_us(); lcd.locate(0,2); end2=timer.read_us(); lcd.printf("LCD Locate : %Ld us",end2-end5); end3=timer.read_us(); times=end-begin; end4=timer.read_us(); lcd.printf("\nCalculation : %Ld us",end4-end3); wait(2); } <</code>>