Simulinkを用いたArduinoの外部割込み実装について

C:\Users\User name\Desktop\kenkyuu\MATLAB\bi-kuru\Enc_test\Enc_test_ert_rtw/Enc_test.c:7: undefined reference to `Enc_Read_Outputs_wrapper'
C:\Users\User name\Desktop\kenkyuu\MATLAB\bi-kuru\Enc_test\Enc_test_ert_rtw/Enc_test.c:8: undefined reference to `Enc_Read_Update_wrapper'
collect2.exe: error: ld returned 1 exit status
gmake: *** [../Enc_test.elf] Error 1
The make command returned an error of 2
'An_error_occurred_during_the_call_to_make' は、内部コマンドまたは外部コマンド、
操作可能なプログラムまたはバッチ ファイルとして認識されていません。

/*
 * Include Files
 *
 */
#if defined(MATLAB_MEX_FILE)
#include "tmwtypes.h"
#include "simstruc_types.h"
#else
#include "rtwtypes.h"
#endif



/* %%%-SFUNWIZ_wrapper_includes_Changes_BEGIN --- EDIT HERE TO _END */
#include <math.h>
#ifndef MATLAB_MEX_FILE
#include <Arduino.h>

volatile byte count = 0;
volatile byte y0 = 0;

void Enc_Read(){
    count = 1;
    y0 = count;
}
#endif
/* %%%-SFUNWIZ_wrapper_includes_Changes_END --- EDIT HERE TO _BEGIN */
#define y_width 1

/*
 * Create external references here.  
 *
 */
/* %%%-SFUNWIZ_wrapper_externs_Changes_BEGIN --- EDIT HERE TO _END */
/* extern double func(double a); */
/* %%%-SFUNWIZ_wrapper_externs_Changes_END --- EDIT HERE TO _BEGIN */

/*
 * Output function
 *
 */
void Enc_Read_Outputs_wrapper(uint8_T *y0,
            const real_T *xD)
{
/* %%%-SFUNWIZ_wrapper_Outputs_Changes_BEGIN --- EDIT HERE TO _END */
/* このサンプルは、出力を入力と等しく設定します
 y0[0] = u0[0]; 
 複素信号の場合は、次を使用します: y0[0].re = u0[0].re; 
 y0[0].im = u0[0].im;
 y1[0].re = u1[0].re;
 y1[0].im = u1[0].im;
 */
if (xD[0]==1){
    #ifndef MATLAB_MEX_FILE
    //count = 0;
    *y0 = count;
#endif   
}
/* %%%-SFUNWIZ_wrapper_Outputs_Changes_END --- EDIT HERE TO _BEGIN */
}

/*
 * Updates function
 *
 */
void Enc_Read_Update_wrapper(uint8_T *y0,
            real_T *xD)
{
/* %%%-SFUNWIZ_wrapper_Update_Changes_BEGIN --- EDIT HERE TO _END */
/*
 * コード例
 * xD[0] = u0[0];
 */
if (xD[0]!=1){    
    #ifndef MATLAB_MEX_FILE
    attachInterrupt(digitalPinToInterrupt(2),Enc_Read,RISING);
    #endif 

  xD[0]=1;
}
/* %%%-SFUNWIZ_wrapper_Update_Changes_END --- EDIT HERE TO _BEGIN */
}