Compilation
General troubleshooting advice for compilation issues
- Build failed for project 'ArduinoIoTCloud-Basic' using an ESP8266
- Error: Multiple libraries were found
- The IDE prints a message about sketch size and memory usage
- avrdude: jtagmkII_initialize(): Cannot locate 'flash' and 'boot' memories in description
- If your sketch doesn't compile
- Error: call of overloaded 'write(int)' is ambiguous
- Error: ar.exe: unable to rename 'core'
- Error "undeclared function" or "undeclared type"
- Error: Java.lang.StackOverflowError
- Error: ar.exe: unable to rename 'core\core.a'
- Windows Device Manager shows a 'warning sign' under my device
- Reduce the size and memory usage of your sketch
- Error: Symbol not found environ
