i need help in arduino with eclipse

#include “uno.h”
#include <MsTimer2.h>

void flash() {
static boolean output = HIGH;

digitalWrite(13, output);
output = !output;

void setup() {
pinMode(13, OUTPUT);

MsTimer2::set(50000, flash); // 500ms period

void loop()


this is the error
C:\Users\Diablo\workspace\uno\Release/…/uno.cpp:17: undefined reference to MsTimer2::set(unsigned long, void (*)())' C:\Users\Diablo\workspace\uno\Release/../uno.cpp:18: undefined reference to MsTimer2::start()’

Hi you probably havn't linked in the arduino library. Have you considered to use the arduino eclipse plugin? eclipse.baeyens.it Best regards Jantje