error in using sFunction builder

Hey everyone,

I am trying to deploy an sFunction from http://www.mathworks.com/matlabcentral/fileexchange/41906-arduino-s-function-for-mpc4725-i2c-dac on Arduino Mega 2560. I have the arduino support package and also included the Wire.h,Wire.cpp,twi.h and twi.c files in the same folder as the s function. I also changed the wrapper file extension to .cpp and added extern "C" before void wrapper functions. However, I receive the following error to which I have not yet found any solution: The call to realtime_make_rtw_hook, during the after_make hook generated the following error:

    The build failed with the following message: "D:/MATLABSupportPack/arduino-1.0.5/hardware/tools/avr/bin/avr-gcc" -I"D:/MATLABSupportPack/arduino/include" -I"D:/MATLABSupportPack/arduino/blocks/sfcn/include" -I"D:/DACsFuncSimulink/MPC4725_toggle_rtt" -I"D:/DACsFuncSimulink" -I"D:/NewMatlab/extern/include" -I"D:/NewMatlab/simulink/include" -I"D:/NewMatlab/rtw/c/src" -I"D:/NewMatlab/rtw/c/src/ext_mode/common" -I"D:/NewMatlab/rtw/c/ert" -I"D:/NewMatlab/toolbox/coder/rtiostream/src/utils" -I"D:/MATLABSupportPack/arduino-1.0.5/hardware/arduino/cores/arduino" -I"D:/MATLABSupportPack/arduino-1.0.5/hardware/arduino/variants/mega" -I"D:/MATLABSupportPack/arduino-1.0.5/libraries/Servo" -I"D:/NewMatlab/rtw/c/src/ext_mode/serial" -I"D:/MATLABSupportPack/arduinomega2560/src" -mmcu=atmega2560 -ffunction-sections -fdata-sections -std=gnu99 -Wall -Wstrict-prototypes -g -Os -D"MODEL=MPC4725_toggle" -D"NUMST=3" -D"NCSTATES=0" -D"HAVESTDIO=" -D"ON_TARGET_WAIT_FOR_START=1" -D"ONESTEPFCN=0" -D"EXT_MODE=1" -D"TERMFCN=1" -D"MAT_FILE=0" -D"MULTI_INSTANCE_CODE=0" -D"INTEGER_CODE=0" -D"MT=0" -D"CLASSIC_INTERFACE=0" -D"ALLOCATIONFCN=0" -D"TID01EQ=0" -D"F_CPU=16000000" -D"ARDUINO=105" -D"_RUNONTARGETHARDWARE_BUILD_=" -D"_ROTH_MEGA2560_=" -D"_RTT_NUMSERVOS_=0" -D"EXIT_FAILURE=1" -D"EXTMODE_DISABLEPRINTF=" -D"EXTMODE_DISABLETESTING=" -D"EXTMODE_DISABLE_ARGS_PROCESSING=1" -c -x none ./MPC4725_S_Function_wrapper.cpp ./MPC4725_toggle.c ./MPC4725_toggle_data.c ./ert_main.c ./HardwareSerial.cpp ./IPAddress.cpp ./Print.cpp ./WInterrupts.c ./WMath.cpp ./WString.cpp ./new.cpp ./wiring.c ./wiring_analog.c ./wiring_digital.c ./io_wrappers.cpp ./rtiostream_serial.cpp ./ext_svr.c ./ext_work.c ./updown.c ./ext_serial_pkt.c ./ext_svr_serial_transport.c ./rtiostream_serial_interface.c ./rtiostream_utils.c
cc1plus.exe: warning: command line option "-Wstrict-prototypes" is valid for Ada/C/ObjC but not for C++
cc1plus.exe: warning: command line option "-std=gnu99" is valid for C/ObjC but not for C++
In file included from ./MPC4725_S_Function_wrapper.cpp:18:
D:/DACsFuncSimulink/twi.h: In member function 'uint8_t TwoWire::requestFrom(uint8_t, uint8_t, uint8_t)':
D:/DACsFuncSimulink/twi.h:47: error: too many arguments to function 'uint8_t twi_readFrom(uint8_t, uint8_t*, uint8_t)'
D:/DACsFuncSimulink/Wire.cpp:85: error: at this point in file
D:/DACsFuncSimulink/twi.h: In member function 'uint8_t TwoWire::endTransmission(uint8_t)':
D:/DACsFuncSimulink/twi.h:48: error: too many arguments to function 'uint8_t twi_writeTo(uint8_t, uint8_t*, uint8_t, uint8_t)'
D:/DACsFuncSimulink/Wire.cpp:140: error: at this point in file
D:/DACsFuncSimulink/Wire.cpp: In member function 'virtual size_t TwoWire::write(const uint8_t*, size_t)':
D:/DACsFuncSimulink/Wire.cpp:195: error: invalid conversion from 'const uint8_t*' to 'uint8_t*'
D:/DACsFuncSimulink/Wire.cpp:195: error:   initializing argument 1 of 'uint8_t twi_transmit(uint8_t*, uint8_t)'
In file included from D:/MATLABSupportPack/arduino/blocks/sfcn/include/arduino_blocks_abstraction.h:8,
                 from D:/MATLABSupportPack/arduino/blocks/sfcn/include/arduino_digitaloutput_lct.h:11,
                 from ./MPC4725_toggle.h:31,
                 from ./MPC4725_toggle.c:17:
D:/MATLABSupportPack/arduino-1.0.5/hardware/arduino/cores/arduino/Arduino.h:25:1: warning: "true" redefined
In file included from ./MPC4725_toggle.h:24,
                 from ./MPC4725_toggle.c:17:
./rtwtypes.h:27:1: warning: this is the location of the previous definition
In file included from D:/MATLABSupportPack/arduino/blocks/sfcn/include/arduino_blocks_abstraction.h:8,
                 from D:/MATLABSupportPack/arduino/blocks/sfcn/include/arduino_digitaloutput_lct.h:11,
                 from ./MPC4725_toggle.h:31,
                 from ./MPC4725_toggle.c:17:
D:/MATLABSupportPack/arduino-1.0.5/hardware/arduino/cores/arduino/Arduino.h:26:1: warning: "false" redefined
In file included from ./MPC4725_toggle.h:24,
                 from ./MPC4725_toggle.c:17:
./rtwtypes.h:23:1: warning: this is the location of the previous definition
In file included from D:/MATLABSupportPack/arduino/blocks/sfcn/include/arduino_blocks_abstraction.h:8,
                 from D:/MATLABSupportPack/arduino/blocks/sfcn/include/arduino_digitaloutput_lct.h:11,
                 from ./MPC4725_toggle.h:31,
                 from ./MPC4725_toggle_data.c:17:
D:/MATLABSupportPack/arduino-1.0.5/hardware/arduino/cores/arduino/Arduino.h:25:1: warning: "true" redefined
In file included from ./MPC4725_toggle.h:24,
                 from ./MPC4725_toggle_data.c:17:
./rtwtypes.h:27:1: warning: this is the location of the previous definition
In file included from D:/MATLABSupportPack/arduino/blocks/sfcn/include/arduino_blocks_abstraction.h:8,
                 from D:/MATLABSupportPack/arduino/blocks/sfcn/include/arduino_digitaloutput_lct.h:11,
                 from ./MPC4725_toggle.h:31,
                 from ./MPC4725_toggle_data.c:17:
D:/MATLABSupportPack/arduino-1.0.5/hardware/arduino/cores/arduino/Arduino.h:26:1: warning: "false" redefined
In file included from ./MPC4725_toggle.h:24,
                 from ./MPC4725_toggle_data.c:17:
./rtwtypes.h:23:1: warning: this is the location of the previous definition
In file included from D:/MATLABSupportPack/arduino/blocks/sfcn/include/arduino_blocks_abstraction.h:8,
                 from D:/MATLABSupportPack/arduino/blocks/sfcn/include/arduino_digitaloutput_lct.h:11,
                 from ./MPC4725_toggle.h:31,
                 from ./ert_main.c:17:
D:/MATLABSupportPack/arduino-1.0.5/hardware/arduino/cores/arduino/Arduino.h:25:1: warning: "true" redefined
In file included from ./MPC4725_toggle.h:24,
                 from ./ert_main.c:17:
./rtwtypes.h:27:1: warning: this is the location of the previous definition
In file included from D:/MATLABSupportPack/arduino/blocks/sfcn/include/arduino_blocks_abstraction.h:8,
                 from D:/MATLABSupportPack/arduino/blocks/sfcn/include/arduino_digitaloutput_lct.h:11,
                 from ./MPC4725_toggle.h:31,
                 from ./ert_main.c:17:
D:/MATLABSupportPack/arduino-1.0.5/hardware/arduino/cores/arduino/Arduino.h:26:1: warning: "false" redefined
In file included from ./MPC4725_toggle.h:24,
                 from ./ert_main.c:17:
./rtwtypes.h:23:1: warning: this is the location of the previous definition
cc1plus.exe: warning: command line option "-Wstrict-prototypes" is valid for Ada/C/ObjC but not for C++
cc1plus.exe: warning: command line option "-std=gnu99" is valid for C/ObjC but not for C++
./HardwareSerial.cpp: In function 'void store_char(unsigned char, ring_buffer*)':
./HardwareSerial.cpp:98: warning: comparison between signed and unsigned integer expressions
./HardwareSerial.cpp: In function 'void __vector_25()':
./HardwareSerial.cpp:127: warning: unused variable 'c'
./HardwareSerial.cpp: In function 'void __vector_36()':
./HardwareSerial.cpp:153: warning: unused variable 'c'
./HardwareSerial.cpp: In function 'void __vector_51()':
./HardwareSerial.cpp:168: warning: unused variable 'c'
./HardwareSerial.cpp: In function 'void __vector_54()':
./HardwareSerial.cpp:183: warning: unused variable 'c'
./HardwareSerial.cpp: In member function 'void HardwareSerial::begin(long unsigned int, byte)':
./HardwareSerial.cpp:368: warning: unused variable 'current_config'
./HardwareSerial.cpp: In member function 'virtual size_t HardwareSerial::write(uint8_t)':
./HardwareSerial.cpp:467: warning: comparison between signed and unsigned integer expressions
cc1plus.exe: warning: command line option "-Wstrict-prototypes" is valid for Ada/C/ObjC but not for C++
cc1plus.exe: warning: command line option "-std=gnu99" is valid for C/ObjC but not for C++
cc1plus.exe: warning: command line option "-Wstrict-prototypes" is valid for Ada/C/ObjC but not for C++
cc1plus.exe: warning: command line option "-std=gnu99" is valid for C/ObjC but not for C++
./Print.cpp: In member function 'size_t Print::print(const __FlashStringHelper*)':
./Print.cpp:44: warning: '__progmem__' attribute ignored
cc1plus.exe: warning: command line option "-Wstrict-prototypes" is valid for Ada/C/ObjC but not for C++
cc1plus.exe: warning: command line option "-std=gnu99" is valid for C/ObjC but not for C++
cc1plus.exe: warning: command line option "-Wstrict-prototypes" is valid for Ada/C/ObjC but not for C++
cc1plus.exe: warning: command line option "-std=gnu99" is valid for C/ObjC but not for C++
cc1plus.exe: warning: command line option "-Wstrict-prototypes" is valid for Ada/C/ObjC but not for C++
cc1plus.exe: warning: command line option "-std=gnu99" is valid for C/ObjC but not for C++
cc1plus.exe: warning: command line option "-Wstrict-prototypes" is valid for Ada/C/ObjC but not for C++
cc1plus.exe: warning: command line option "-std=gnu99" is valid for C/ObjC but not for C++
./io_wrappers.cpp: In function 'void Serial_read(int, int, uint8_t*, int16_t*)':
./io_wrappers.cpp:59: warning: 'libFcnOutput' may be used uninitialized in this function
cc1plus.exe: warning: command line option "-Wstrict-prototypes" is valid for Ada/C/ObjC but not for C++
cc1plus.exe: warning: command line option "-std=gnu99" is valid for C/ObjC but not for C++
./rtiostream_serial.cpp: In function 'int rtIOStreamOpen(int, void**)':
./rtiostream_serial.cpp:28: warning: unused variable 'init_complete'
./ext_work.c:248: warning: 'displayUsage' defined but not used
make: *** [MPC4725_S_Function_wrapper.o] Error 1

If anyone knows where I am going wrong, please correct me. Will be very grateful to you. Thank you!