When I try to upload a sketch it gives me Compilation error

[jimmygb12345]

As the title says I have an error I have pretty much spent the past 2 days looking at almost every forum post on this I have tried almost everything. I really need this to work because I have a project that needs to be done.

Here is the code:

#define STEPPER_PIN_1 9
#define STEPPER_PIN_2 10
#define STEPPER_PIN_3 11
#define STEPPER_PIN_4 12
int step_number = 0;
void setup() {
  // put your setup code here, to run once:
pinMode(STEPPER_PIN_1, OUTPUT);
pinMode(STEPPER_PIN_2, OUTPUT);
pinMode(STEPPER_PIN_3, OUTPUT);
pinMode(STEPPER_PIN_4, OUTPUT);
}

void loop() {
  // put your main code here, to run repeatedly:
  OneStep(false);
  delay(2);
}

void OneStep(bool dir){
  if(dir){
switch(step_number){
  case 0:
  digitalWrite(STEPPER_PIN_1, HIGH);
  digitalWrite(STEPPER_PIN_2, LOW);
  digitalWrite(STEPPER_PIN_3, LOW);
  digitalWrite(STEPPER_PIN_4, LOW);
  break;
    case 1:
  digitalWrite(STEPPER_PIN_1, LOW);
  digitalWrite(STEPPER_PIN_2, HIGH);
  digitalWrite(STEPPER_PIN_3, LOW);
  digitalWrite(STEPPER_PIN_4, LOW);
  break;
    case 2:
  digitalWrite(STEPPER_PIN_1, LOW);
  digitalWrite(STEPPER_PIN_2, LOW);
  digitalWrite(STEPPER_PIN_3, HIGH);
  digitalWrite(STEPPER_PIN_4, LOW);
  break;
    case 3:
  digitalWrite(STEPPER_PIN_1, LOW);
  digitalWrite(STEPPER_PIN_2, LOW);
  digitalWrite(STEPPER_PIN_3, LOW);
  digitalWrite(STEPPER_PIN_4, HIGH);
  break;
}
  }else{
    switch(step_number){
    case 0:
  digitalWrite(STEPPER_PIN_1, LOW);
  digitalWrite(STEPPER_PIN_2, LOW);
  digitalWrite(STEPPER_PIN_3, LOW);
  digitalWrite(STEPPER_PIN_4, HIGH);
  break;
    case 1:
  digitalWrite(STEPPER_PIN_1, LOW);
  digitalWrite(STEPPER_PIN_2, LOW);
  digitalWrite(STEPPER_PIN_3, HIGH);
  digitalWrite(STEPPER_PIN_4, LOW);
  break;
    case 2:
  digitalWrite(STEPPER_PIN_1, LOW);
  digitalWrite(STEPPER_PIN_2, HIGH);
  digitalWrite(STEPPER_PIN_3, LOW);
  digitalWrite(STEPPER_PIN_4, LOW);
  break;
    case 3:
  digitalWrite(STEPPER_PIN_1, HIGH);
  digitalWrite(STEPPER_PIN_2, LOW);
  digitalWrite(STEPPER_PIN_3, LOW);
  digitalWrite(STEPPER_PIN_4, LOW);
  break;
    }
    }
step_number++;
  if(step_number > 3){
    step_number = 0;
  }
  }

[UKHeliBob]

Welcome to the forum

The sketch compiles OK for me

Please post the full error message, using code tags when you do

Which Arduino board are you using ?

[jimmygb12345]

I am using an Elegoo uno but it can just be a ration uno I am kind of a noob at this

[jimmygb12345]

This is the whole error messege

FQBN: arduino:avr:uno
Using board 'uno' from platform in folder: C:\Users\texas\AppData\Local\Arduino15\packages\arduino\hardware\avr\1.8.6
Using core 'arduino' from platform in folder: C:\Users\texas\AppData\Local\Arduino15\packages\arduino\hardware\avr\1.8.6

loading library from C:\Users\texas\OneDrive\Documents\Arduino\libraries\package-2531440388: invalid library: no header files found
Detecting libraries used...
C:\Users\texas\AppData\Local\Arduino15\packages\arduino\tools\avr-gcc\7.3.0-atmel3.6.1-arduino7/bin/avr-g++ -c -g -Os -w -std=gnu++11 -fpermissive -fno-exceptions -ffunction-sections -fdata-sections -fno-threadsafe-statics -Wno-error=narrowing -flto -w -x c++ -E -CC -mmcu=atmega328p -DF_CPU=16000000L -DARDUINO=10607 -DARDUINO_AVR_UNO -DARDUINO_ARCH_AVR -IC:\Users\texas\AppData\Local\Arduino15\packages\arduino\hardware\avr\1.8.6\cores\arduino -IC:\Users\texas\AppData\Local\Arduino15\packages\arduino\hardware\avr\1.8.6\variants\standard C:\Users\texas\AppData\Local\Temp\arduino\sketches\703DFD14AB640E915B77CEBD06E871AF\sketch\steppermotor.ino.cpp -o nul
Generating function prototypes...
C:\Users\texas\AppData\Local\Arduino15\packages\arduino\tools\avr-gcc\7.3.0-atmel3.6.1-arduino7/bin/avr-g++ -c -g -Os -w -std=gnu++11 -fpermissive -fno-exceptions -ffunction-sections -fdata-sections -fno-threadsafe-statics -Wno-error=narrowing -flto -w -x c++ -E -CC -mmcu=atmega328p -DF_CPU=16000000L -DARDUINO=10607 -DARDUINO_AVR_UNO -DARDUINO_ARCH_AVR -IC:\Users\texas\AppData\Local\Arduino15\packages\arduino\hardware\avr\1.8.6\cores\arduino -IC:\Users\texas\AppData\Local\Arduino15\packages\arduino\hardware\avr\1.8.6\variants\standard C:\Users\texas\AppData\Local\Temp\arduino\sketches\703DFD14AB640E915B77CEBD06E871AF\sketch\steppermotor.ino.cpp -o C:\Users\texas\AppData\Local\Temp\3688291178\sketch_merged.cpp
C:\Users\texas\AppData\Local\Arduino15\packages\builtin\tools\ctags\5.8-arduino11/ctags -u --language-force=c++ -f - --c++-kinds=svpf --fields=KSTtzns --line-directives C:\Users\texas\AppData\Local\Temp\3688291178\sketch_merged.cpp
Compiling sketch...
"C:\\Users\\texas\\AppData\\Local\\Arduino15\\packages\\arduino\\tools\\avr-gcc\\7.3.0-atmel3.6.1-arduino7/bin/avr-g++" -c -g -Os -w -std=gnu++11 -fpermissive -fno-exceptions -ffunction-sections -fdata-sections -fno-threadsafe-statics -Wno-error=narrowing -MMD -flto -mmcu=atmega328p -DF_CPU=16000000L -DARDUINO=10607 -DARDUINO_AVR_UNO -DARDUINO_ARCH_AVR "-IC:\\Users\\texas\\AppData\\Local\\Arduino15\\packages\\arduino\\hardware\\avr\\1.8.6\\cores\\arduino" "-IC:\\Users\\texas\\AppData\\Local\\Arduino15\\packages\\arduino\\hardware\\avr\\1.8.6\\variants\\standard" "C:\\Users\\texas\\AppData\\Local\\Temp\\arduino\\sketches\\703DFD14AB640E915B77CEBD06E871AF\\sketch\\steppermotor.ino.cpp" -o "C:\\Users\\texas\\AppData\\Local\\Temp\\arduino\\sketches\\703DFD14AB640E915B77CEBD06E871AF\\sketch\\steppermotor.ino.cpp.o"
Compiling libraries...
Compiling core...
Using precompiled core: C:\Users\texas\AppData\Local\Temp\arduino\cores\arduino_avr_uno_4efd6f3ace9e2d9ef704adb03bc403de\core.a
Linking everything together...
"C:\\Users\\texas\\AppData\\Local\\Arduino15\\packages\\arduino\\tools\\avr-gcc\\7.3.0-atmel3.6.1-arduino7/bin/avr-gcc" -w -Os -g -flto -fuse-linker-plugin -Wl,--gc-sections -mmcu=atmega328p -o "C:\\Users\\texas\\AppData\\Local\\Temp\\arduino\\sketches\\703DFD14AB640E915B77CEBD06E871AF/steppermotor.ino.elf" "C:\\Users\\texas\\AppData\\Local\\Temp\\arduino\\sketches\\703DFD14AB640E915B77CEBD06E871AF\\sketch\\steppermotor.ino.cpp.o" "C:\\Users\\texas\\AppData\\Local\\Temp\\arduino\\sketches\\703DFD14AB640E915B77CEBD06E871AF/..\\..\\cores\\arduino_avr_uno_4efd6f3ace9e2d9ef704adb03bc403de\\core.a" "-LC:\\Users\\texas\\AppData\\Local\\Temp\\arduino\\sketches\\703DFD14AB640E915B77CEBD06E871AF" -lm
c:/users/texas/appdata/local/arduino15/packages/arduino/tools/avr-gcc/7.3.0-atmel3.6.1-arduino7/bin/../lib/gcc/avr/7.3.0/../../../../avr/lib/avr5/crtatmega328p.o:(.init9+0x0): undefined reference to `main'

exit status 1

Compilation error: exit status 1

[TomGeorge]

Hi,
Welcome to the forum.

What IDE version?
What OS?

Have you been able to load other code to your controller?
Such as "Blink without delay" in the Examples folder.

Tom..

[van_der_decken]

@jimmygb12345

c:/users/texas/appdata/local/arduino15/packages/arduino/tools/avr-gcc/7.3.0-atmel3.6.1-arduino7/bin/../lib/gcc/avr/7.3.0/../../../../avr/lib/avr5/crtatmega328p.o:(.init9+0x0): undefined reference to main'`

A quick forum search turned up this possible solution:

Arduino 2.0 Error - undefined reference to `main' Compilation error: exit status 1

Hi @hizon. I believe the cause of the error is a corrupted core compilation cache file. For the sake of efficiency, the Arduino IDE caches the compiled "core" (the code that defines the standard Arduino API) and libraries the first time you compile them for a given board. This means that all subsequent compilations for that board will be much faster because only the sketch needs to be compiled if the other components are already cached. Any available caches will be reused until the source files…