Where can I find arduino.h?

Where can I find arduino.h? I have looked everywhere I can think of.

Doesn't exist.

"Arduino.h" on the other hand is in your distribution - case matters.

I found it.

And of course the Arduino sources are in a git repo too...

For instance the AVR version is: https://github.com/arduino/Arduino/blob/master/hardware/arduino/avr/cores/arduino/Arduino.h