How to compile Repetier with two extruders

Preamble

This is a follow up to DIOORIG_FAN2_PIN_WPORT error.

DIOORIG_FAN2_PIN_WPORT error

Preamble

I couldn’t resolve this compile error

fastio.h:29: error: 'DIOORIG_FAN2_PIN_WPORT' was not declared in this scope

This was from compiling the Repetier.ino file, straight from the download from a number of sources:

1. github, Repetier firmware, and;
2. google drive: Repetier-Firmware-2017-06-09

I played about with the Configuration.h file, that came with the google drive download, manually, but always ended up with the same error.

I then tried loading the Configuration.h file into the Configuration tool, and reconfiguring it in there, but that did not help much.

Selecting the right motherboard in Repetier

Preamble

Repetier is just appalling. I can hardly be bothered to document trying to compile it, as Marlin is vastly superior. However, as I am one who does not cow down in the face of adversity, here goes.

Setting up Sanguinololu on OS X for Arduino 1.8.6

Preamble

See the preamble of Trouble compiling Repetier

Following Setting up a Sanguinololu on a Mac, the instructions aren’t quite right of a recent Arduino IDE. They may have worked for 1.0, but they don’t anymore.

Trouble compiling Repetier

Preamble

I was having trouble compiling Repetier, without a Z-probe, whereby I disabled both the Z-probe and the distortion correction, but ended up with a slew of compile errors… which turned out to have nothing to do with the Z-probe, nor the distortion correction whatsoever (see Reason for the compile errors below).

However, I had already typed in the question, so here it is anyway, see The Question below, with the raw markdown posted just below it, see The Markdown below.