Compiler: unresolved symbols remain

#include <stdbool.h>
#include <stdio.h>
#include <stdint.h>
#include "sensorlib/i2cm_drv.h"
#include "sensorlib/mpu6050.h"
#include "sensorlib/hw_mpu6050.h"


//
// A boolean that is set when a MPU6050 command has completed.
//
volatile bool g_bMPU6050Done;

void MPU6050Callback(void *pvCallbackData, uint_fast8_t ui8Status);
void MPU6050Example(void);


/**
 * main.c
 */
int main(void)
{





	return 0;
}

//
// The function that is provided by this example as a callback when MPU6050
// transactions have completed.
//
void MPU6050Callback(void *pvCallbackData, uint_fast8_t ui8Status)
{
    //
    // See if an error occurred.
    //
    if(ui8Status != I2CM_STATUS_SUCCESS)
    {
    //
    // An error occurred, so handle it here if required.
    //
    }
    //
    // Indicate that the MPU6050 transaction has completed.
    //
    g_bMPU6050Done = true;
}

//
// The MPU6050 example.
//
void MPU6050Example(void)
{
    float fAccel[3], fGyro[3];
    tI2CMInstance sI2CInst;
    tMPU6050 sMPU6050;

    //
    // Initialize the MPU6050. This code assumes that the I2C master instance
    // has already been initialized.
    //
    g_bMPU6050Done = false;
    MPU6050Init(&sMPU6050, &sI2CInst, 0x68, MPU6050Callback, 0);

    while(!g_bMPU6050Done);

    //
    // Configure the MPU6050 for +/- 4 g accelerometer range.
    //
    g_bMPU6050Done = false;
    MPU6050ReadModifyWrite(&sMPU6050, MPU6050_O_ACCEL_CONFIG, ~MPU6050_ACCEL_CONFIG_AFS_SEL_M,
    MPU6050_ACCEL_CONFIG_AFS_SEL_4G, MPU6050Callback, 0);

    while(!g_bMPU6050Done);

    //
    // Loop forever reading data from the MPU6050. Typically, this process
    // would be done in the background, but for the purposes of this example,
    // it is shown in an infinite loop.
    //
    while(1)
    {
        //
        // Request another reading from the MPU6050.
        //
        g_bMPU6050Done = false;
        MPU6050DataRead(&sMPU6050, MPU6050Callback, 0);

        while(!g_bMPU6050Done);

        //
        // Get the new accelerometer and gyroscope readings.
        //
        MPU6050DataAccelGetFloat(&sMPU6050, &fAccel[0], &fAccel[1], &fAccel[2]);
        MPU6050DataGyroGetFloat(&sMPU6050, &fGyro[0], &fGyro[1], &fGyro[2]);
        //
        // Do something with the new accelerometer and gyroscope readings.
        //
    }
}