====== Build Qt from sources on Ubuntu 14.04 ======
[[https://wiki.qt.io/Building_Qt_5_from_Git|source]]

===== preparing =====

  sudo apt-get build-dep qt5-default
  sudo apt-get install build-essential perl python git
  sudo apt-get install "^libxcb.*" libx11-xcb-dev libglu1-mesa-dev libxrender-dev libxi-dev
  sudo apt-get install flex bison gperf libicu-dev libxslt-dev ruby
  sudo apt-get install libssl-dev libxcursor-dev libxcomposite-dev libxdamage-dev libxrandr-dev libfontconfig1-dev
  sudo apt-get install libcap-dev libbz2-dev libgcrypt11-dev libpci-dev libnss3-dev build-essential libxcursor-dev libxcomposite-dev libxdamage-dev libxrandr-dev libdrm-dev libfontconfig1-dev libxtst-dev libasound2-dev gperf libcups2-dev libpulse-dev libudev-dev libssl-dev flex bison ruby
  sudo apt-get install libasound2-dev libgstreamer0.10-dev libgstreamer-plugins-base0.10-dev
  
===== downloading =====
Assuming downloading version is 5.5.
  cd /home/denis/asutp/tools/qt
    git clone git://code.qt.io/qt/qt5.git 5.5
  or
    git clone http://code.qt.io/qt/qt5.git 5.5
  cd 5.5
  git checkout 5.5
  perl init-repository --no-webkit
  
===== configuring =====
  ./configure -developer-build -opensource -nomake examples -nomake tests -debug-and-release -c++11 -confirm-license
  
===== compiling =====
  make -j4

===== АХТУНГ =====  
  может быть легкий achtung, флаг -j следует сопоставлять с мощностью машины
  проверено на 4 ядрах, -j4 вызывает легкий ступор.
  Полный achtung на -j без числа.
  
===== adding to qt creator =====
  - Tools / Options / Qt Versions / Add: ''/home/denis/asutp/tools/qt/5.5/Src/qtbase/bin/qmake''
  - Kits / Clone / Qt Version: ''5.5''