@Marek-Stocki
Wait, wait! You absolutely do not want to move a Python3 application back to Python2! Trust me :)

Even 26 seconds startup is quite unacceptable. Start up should be like ~1 second!! There is something wrong.....

@Xenoshell What's the full output from the configure? Or more specifically, what is the output from the tests that are built to test for gstreamer and dbus?

That will help shed some light on your install issue. It sounds like even though you installed all the *-dev packages Qt isn't finding them properly.

@Xenoshell If a command/tool needs root rights it is better to set http://linuxg.net/how-to-set-the-setuid-and-setgid-bit-for-files-in-linux-and-unix/ instead of running whole IDE as root! I never saw a need to run an IDE as root and I'm software developer for quite some time.

Hi,

Thanks for the update, looks good

@_nezticle Stupid noob question.... (So sorry.. I'm learning!)

I have a Raspberry Pi2, I would like to get 5.5.0-beta working on it. (or any other slightly earlier version for that matter)
You mentioned they have "a device mkspec was added for Raspberry Pi 2 in 5.5 branch:"

So I downloaded the qt-everywhere-opensource-src-5.5.0-beta and I would like to get it installed on my Pi 2.
What command do I use to get it to successfully install on my Raspberry Pi 2?

Do I use ./configure -prefix $PWD/qtbase -opensource -nomake tests like the README says or do I add something else to get it to install for just the Pi 2?

Ultimately I'd like to install Qt Creator 3.4.0 (or maybe an earlier version?) so I can run .pro files that cryptocurreny wallets have available. [eg. https://github.com/sherlockcoin/navajocoin (the NavajoCoin-qt.pro file)]

Here's what I see:
Build instructions

Debian

First, make sure that the required packages for Qt5 development of your distribution are installed, for Debian and Ubuntu these are:

apt-get install qt5-default qt5-qmake qtbase5-dev-tools qttools5-dev-tools
build-essential libboost-dev libboost-system-dev
libboost-filesystem-dev libboost-program-options-dev libboost-thread-dev
libssl-dev libdb++-dev
then execute the following:

qmake
make
Alternatively, install Qt Creator and open the navajocoin-qt.pro file.

An executable named navajocoin-qt will be built.

I've tried the 1st part, and it won't work (probably because this is a Pi 2 I'm assuming)
So, I need help with the 2nd part.

Many Many Thanks to anybody that can help me!