Hi again :-), sorry to resurrect this necro-thread. After some time (4 yrs) I decided to retry to check if something changed on my side (I switched Linux distribution to Linux Mint 20.1). With my big surprise I was able to build it from source and MIDI OUT now works for me! I post hereafter some notes of what I did in detail:

## Compiling Iannix

The source can be fetched from the [official repository](https://www.iannix.org/en/download-iannix/). Iannix.pro can be opened in Qt Creator. The compile step complains from the missing *script*:

ERROR: Unknown module(s) in QT: script when building Qt Creator

In order to fix it first of all locate the directory in which **Qt** and **Qt Creator** is installed. In my case:

/home/alberto/Qt

In my case I have:
– Qt Creator 4.14.0 (“open source”)
– Based on Qt 5.15.2 (GCC 7.3.1 20180303 (Red Hat 7.3.1-5), 64 bit)

In that directory there is a Maintenance Tool. In that tool, from Setup-Qt ==> Install/Remove components ==> Install the “script” plugin.
(BTW, “script” is now deprecated in Qt…)

Then the build process in my case fails with the following message:

/home/alberto/Progs/IannixSrc180318/IanniX/objects/nxcurve.cpp:548: error: Invalid use of incomplete type 'QPainterPath'

Adding:

	#include "nxcurve.h"
	// az 06022022
	#include <QPainterPath>

in nxcurve.cpp makes the compilation to finish correctly. The DEBUG and RELEASE versions now build and work. Moving the executable:

~/Progs/IannixSrc180318/build-IanniX-Desktop_Qt_5_15_2_GCC_64bit-Release/iannix

into ~/Progs/IannixSrc180318/Iannix/iannix

runs ok except that the “File selection” dialog lags a lot.
It seems to work with MIDI OUT only from “Midi Through: 0”, not from the “From Iannix” MIDI port.

Happy so far. I think that we should make an appimage (or flatpack) from the working environment in order to “preserve” it for future use especially if Qt script or other libraries will evolve without back compatibility. I never did it before, so I try to understand if this is a task easy for me..

Alberto