Issues while porting arduino code about teensy-template HOT 5 CLOSED

// Firmata
//


String sc_request, sc_response, sc_key, sc_value;
int sc_length, sc_equal;
void stringCallback(char *charBuffer) {

  sc_request = String(charBuffer);

  // Basic commands

  if(sc_request == "ping") {
    Firmata.sendString("pong");
  } else if(sc_request == "restart") {
    WRITE_RESTART(0x5FA0004);
  } else if(sc_request == "off") {
    for(int i = 0; i < chipsCount * 8; i++) {
      writeLedById(i, LOW);
    }
  } else if(sc_request == "on") {
    for(int i = 0; i < chipsCount * 8; i++) {
      writeLedById(i, HIGH);
    }
  } else if(sc_request == "play-finished") {
    resetScenario();
  } else {
    // Firmata.sendString(charBuffer);
  }

  // Assign commands

  sc_equal = sc_request.indexOf("=");

  if(sc_equal != -1) {
    sc_key = sc_request.substring(0, sc_equal);
    sc_value = sc_request.substring(sc_equal + 1);

    if(sc_key == "select") {
      selectButton(sc_value.toInt());
    }

  }

  // Force free memory
  free(charBuffer);
  charBuffer = 0;

}

void sysexCallback(byte command, byte argc, byte *argv) {
  Firmata.sendSysex(command, argc, argv);
}

$ make 
[CXX] src/app.ino
In file included from libraries/Firmata/Firmata.h:16:0,
                 from src/app.ino:15:
libraries/Firmata/Boards.h:341:19: warning: extra tokens at end of #ifndef directive [enabled by default]
libraries/Firmata/Boards.h: In function 'unsigned char writePort(byte, byte, byte)':
libraries/Firmata/Boards.h:414:1: warning: no return statement in function returning non-void [-Wreturn-type]
src/app.ino: In function 'void setup()':
src/app.ino:49:31: error: 'stringCallback' was not declared in this scope
src/app.ino:50:31: error: 'sysexCallback' was not declared in this scope
src/app.ino:53:17: error: 'resetScenario' was not declared in this scope
src/app.ino: In function 'void setupPins(Adafruit_MCP23017)':
src/app.ino:68:33: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
src/app.ino:69:24: error: 'writeLedById' was not declared in this scope
src/app.ino: In function 'void loop()':
src/app.ino:91:15: error: 'loopDebug' was not declared in this scope
src/app.ino:93:17: error: 'runScenario' was not declared in this scope
src/app.ino: In function 'void resetScenario()':
src/app.ino:109:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
src/app.ino: In function 'void runScenario()':
src/app.ino:124:17: error: 'loopStandby' was not declared in this scope
src/app.ino:126:21: error: 'loopSelectChild' was not declared in this scope
src/app.ino:128:21: error: 'loopAllSelected' was not declared in this scope
src/app.ino: In function 'void loopStandby()':
src/app.ino:143:70: error: 'blinkLedByIds' was not declared in this scope
src/app.ino:146:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
src/app.ino:148:40: error: 'writeLedById' was not declared in this scope
src/app.ino:149:25: error: 'selectButton' was not declared in this scope
src/app.ino: In function 'void loopSelectChild()':
src/app.ino:163:81: error: 'sendJson' was not declared in this scope
src/app.ino:165:72: error: 'blinkLedByIds' was not declared in this scope
src/app.ino:170:67: error: 'writeLedById' was not declared in this scope
src/app.ino:171:41: error: 'writeLedById' was not declared in this scope
src/app.ino:172:25: error: 'selectButton' was not declared in this scope
src/app.ino: In function 'void selectButton(int)':
src/app.ino:202:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
src/app.ino:208:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
src/app.ino:222:82: error: 'implode' was not declared in this scope
src/app.ino: In function 'void sendJson(char*, int*, size_t)':
src/app.ino:231:37: error: 'implode' was not declared in this scope
src/app.ino: In function 'void implode(char*, int*, size_t)':
src/app.ino:239:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
src/app.ino: In function 'void blinkLedByIds(int*, size_t, int)':
src/app.ino:257:43: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
src/app.ino:261:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
src/app.ino:267:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
src/app.ino: In function 'void loopDebugLegacy()':
src/app.ino:280:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
src/app.ino:285:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
src/app.ino: In function 'void loopDebug()':
src/app.ino:296:33: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
src/app.ino: In function 'void debugValues()':
src/app.ino:312:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
make: *** [/Users/olivier/Dropbox/Projects/teensy-edf/app-i2c/build/src/app.o] Error 1

The Arduino environment performs a few transformations to your main sketch file (the concatenation of all the tabs in the sketch without extensions) before passing it to the avr-gcc compiler.
First, #include "Arduino.h", or for versions less than 1.0, #include "WProgram.h" is added to the top of your sketch. This header file (found in <ARDUINO>/hardware/cores/<CORE>/) includes all the defintions needed for the standard Arduino core.
Next, the environment searches for function definitions within your main sketch file and creates declarations (prototypes) for them. These are inserted after any comments or pre-processor statements (#includes or #defines), but before any other statements (including type declarations). This means that if you want to use a custom type as a function argument, you should declare it within a separate header file. Also, this generation isn't perfect: it won't create prototypes for functions that have default argument values, or which are declared within a namespace or class.
Finally, the contents of the current target's main.cxx file are appended to the bottom of your sketch.