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  2. Software and Downloads
  3. Compilation

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

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