Failed to generate all binary outputs Simulink S-function

Hello everyone, I am looking for add the library of my LCD (AdafruitRGBShield) in Simulink, but even if i can build and simulate, when I'm trying to televerse to my Arduino MEGA ADK I got and error : Failed to generate all binary outputs Simulink S-function. Can you help me please? For what I can suppose from the logs, maybe it doesn't recognize c++? PS : I'm working in Matlab 2017B and the files that I added work very well in arduino, and since it is a library, it should not be a problem of code.

 if true
    % code
C:/ProgramData/MATLAB/SupportPackages/R2017b/3P.instrset/arduinoide.instrset/arduino-1.8.1/hardware/arduino/avr/cores/arduino/Printable.h:25:1: error: unknown type name 'class' 
 class Print; 
 ^ 
C:/ProgramData/MATLAB/SupportPackages/R2017b/3P.instrset/arduinoide.instrset/arduino-1.8.1/hardware/arduino/avr/cores/arduino/Printable.h:33:1: error: unknown type name 'class' 
 class Printable 
 ^ 
C:/ProgramData/MATLAB/SupportPackages/R2017b/3P.instrset/arduinoide.instrset/arduino-1.8.1/hardware/arduino/avr/cores/arduino/Printable.h:34:1: error: expected '=', ',', ';', 'asm' or '__attribute__' before '{' token 
 { 
 ^ 
In file included from C:/Users/mainnt/Desktop/ArduinoLCD/Adafruit_RGBLCDShield.h:20:0, 
                 from ../LCD_wrapper.c:18: 
C:/ProgramData/MATLAB/SupportPackages/R2017b/3P.instrset/arduinoide.instrset/arduino-1.8.1/hardware/arduino/avr/cores/arduino/Print.h:34:1: error: unknown type name 'class' 
 class Print 
 ^ 
C:/ProgramData/MATLAB/SupportPackages/R2017b/3P.instrset/arduinoide.instrset/arduino-1.8.1/hardware/arduino/avr/cores/arduino/Print.h:35:1: error: expected '=', ',', ';', 'asm' or '__attribute__' before '{' token 
 { 
 ^ 
In file included from C:/Users/mainnt/Desktop/ArduinoLCD/Adafruit_RGBLCDShield.h:21:0, 
                 from ../LCD_wrapper.c:18: 
C:/Users/mainnt/Desktop/ArduinoLCD/Adafruit_MCP23017.h:18:1: error: unknown type name 'class' 
 class Adafruit_MCP23017 { 
 ^ 
C:/Users/mainnt/Desktop/ArduinoLCD/Adafruit_MCP23017.h:18:25: error: expected '=', ',', ';', 'asm' or '__attribute__' before '{' token 
 class Adafruit_MCP23017 { 
                         ^ 
In file included from ../LCD_wrapper.c:18:0: 
C:/Users/mainnt/Desktop/ArduinoLCD/Adafruit_RGBLCDShield.h:68:1: error: unknown type name 'class' 
 class Adafruit_RGBLCDShield : public Print { 
 ^ 
C:/Users/mainnt/Desktop/ArduinoLCD/Adafruit_RGBLCDShield.h:68:29: error: expected '=', ',', ';', 'asm' or '__attribute__' before ':' token 
 class Adafruit_RGBLCDShield : public Print { 
                             ^ 
../LCD_wrapper.c:21:1: error: unknown type name 'Adafruit_RGBLCDShield' 
 Adafruit_RGBLCDShield LCD = Adafruit_RGBLCDShield(); 
 ^ 
../LCD_wrapper.c:21:1: error: initializer element is not constant 
../LCD_wrapper.c:22:4: error: expected '=', ',', ';', 'asm' or '__attribute__' before '.' token 
 LCD.begin(16,2); 
    ^ 
../LCD_wrapper.c: In function 'LCD_Outputs_wrapper': 
../LCD_wrapper.c:50:5: error: request for member 'write' in something not a structure or union 
  LCD.write("truc"); 
     ^ 
gmake: *** [LCD_wrapper.o] Error 1

C:\Users\mainnt\Desktop\ArduinoLCD\SFunctionLCD_ert_rtw>echo The make command returned an error of 2 The make command returned an error of 2

C:\Users\mainnt\Desktop\ArduinoLCD\SFunctionLCD_ert_rtw>An_error_occurred_during_the_call_to_make An_error_occurred_during_the_call_to_make wordt niet herkend als een interne of externe opdracht, programma of batchbestand. ### Creating HTML report file SFunctionLCD_codegen_rpt.html ### Build procedure for model: 'SFunctionLCD' aborted due to an error. Error(s) encountered while building "SFunctionLCD": ### Failed to generate all binary outputs.

end

Thank you for your future answers!