3.0.1 issue "USBAPI.h uses delay.h -- which has an error when compiling"

[lindoran]

I had the following error when compiling my project, I am not using delay.h in any of my project files it is only used by USBAPI.h. when I roll back to 2.2.2 everything works.

After upgrading I get the following:

Warning: platform.txt from core 'MightyCore' contains deprecated compiler.path={runtime.tools.avr-gcc.path}/bin/, automatically converted to compiler.path=/usr/bin/. Consider upgrading this core. /usr/lib/avr/include/util/delay.h: In function ‘void _delay_ms(double)’:

:0:8: error: ‘build’ was not declared in this scope In file included from /home/david/.arduino15/packages/MightyCore/hardware/avr/3.0.1/cores/MCUdude_corefiles/USBAPI.h:27:0, from /home/david/.arduino15/packages/MightyCore/hardware/avr/3.0.1/cores/MCUdude_corefiles/Arduino.h:366, from sketch/HB63C09M.ino.cpp:1: /usr/lib/avr/include/util/delay.h:174:21: error: invalid operands of types ‘void’ and ‘double’ to binary ‘operator/’ __tmp = ((F_CPU) / 1e3) * __ms; ^ /usr/lib/avr/include/util/delay.h: In function ‘void _delay_us(double)’: :0:8: error: ‘build’ was not declared in this scope In file included from /home/david/.arduino15/packages/MightyCore/hardware/avr/3.0.1/cores/MCUdude_corefiles/USBAPI.h:27:0, from /home/david/.arduino15/packages/MightyCore/hardware/avr/3.0.1/cores/MCUdude_corefiles/Arduino.h:366, from sketch/HB63C09M.ino.cpp:1: /usr/lib/avr/include/util/delay.h:263:21: error: invalid operands of types ‘void’ and ‘double’ to binary ‘operator/’ __tmp = ((F_CPU) / 1e6) * __us; ^ exit status 1 Error compiling for board ATmega32. This report would have more information with "Show verbose output during compilation" option enabled in File -> Preferences.

[lindoran]

Disregard ... I reinstalled MightyCore and Arduino - this issue is resolved