##Build instructions for Qt Creator 3.1.2 under Ubuntu 14.04

###Prepare

* Install git by command **sudo apt-get install git** in Terminal
* Install g++ by command **sudo apt-get install g++** in Terminal
* Install Qt Creator from [**Downloads page**](https://qt-project.org/downloads)

For 32 bit Ubuntu you need to install g++ version 4.8 manually by such commands

* sudo add-apt-repository ppa:ubuntu-toolchain-r/test
* sudo apt-get update
* sudo apt-get install gcc-4.8 g++-4.8
* sudo update-alternatives --install /usr/bin/gcc gcc /usr/bin/gcc-4.8 20
* sudo update-alternatives --install /usr/bin/g++ g++ /usr/bin/g++-4.8 20

###Prepare folder

Choose a folder for the future build, for example **/home/user/TBuild** There you will have two folders, **Libraries** for third-party libs and **tdesktop** (or **tdesktop-master**) for the app.

###Clone source code

By git – in Terminal go to **/home/user/TBuild** and run

    git clone https://github.com/telegramdesktop/tdesktop.git

or download in ZIP and extract to **/home/user/TBuild** rename **tdesktop-master** to **tdesktop** to have **/home/user/TBuild/tdesktop/Telegram/Telegram.pro** project

###Prepare libraries

Install dev libraries

    sudo apt-get install libexif-dev liblzma-dev libz-dev libssl-dev

####Qt 5.3.1, slightly patched

http://download.qt-project.org/official_releases/qt/5.3/5.3.1/single/qt-everywhere-opensource-src-5.3.1.tar.gz

Extract to **/home/user/TBuild/Libraries**, rename **qt-everywhere-opensource-src-5.3.1** to **QtStatic** to have **/home/user/TBuild/Libraries/QtStatic/qtbase** folder

Apply patch – copy (with overwrite!) everything from **/home/user/TBuild/tdesktop/\_qt\_5\_3\_1\_patch/** to **/home/user/TBuild/Libraries/QtStatic/**

#####Building library

Install some packages for Qt (see **/home/user/TBuild/Libraries/QtStatic/qtbase/src/plugins/platforms/xcb/README**)

    sudo apt-get install libxcb1-dev libxcb-image0-dev libxcb-keysyms1-dev libxcb-icccm4-dev libxcb-render-util0-dev libxcb-util0-dev libxrender-dev libasound-dev libpulse-dev libxcb-sync0-dev libxcb-xfixes0-dev libxcb-randr0-dev libx11-xcb-dev

In Terminal go to **/home/user/TBuild/Libraries/QtStatic** and there run

    ./configure -release -opensource -confirm-license -qt-xcb -no-opengl -static -nomake examples -skip qtquick1 -skip qtdeclarative
    y
    make
    sudo make install

building (**make** command) will take really long time.

###Building Telegram Desktop

* Launch Qt Creator, all projects will be taken from **/home/user/TBuild/tdesktop/Telegram**
* Tools > Options > Build & Run > Qt Versions tab > Add > File System /usr/local/Qt-5.3.1/bin/qmake > **Qt 5.3.1 (Qt-5.3.1)** > Apply
* Tools > Options > Build & Run > Kits tab > Desktop (default) > change **Qt version** to **Qt 5.3.1 (Qt-5.3.1)** > Apply
* Open MetaStyle.pro, configure project with paths **/home/user/TBuild/tdesktop/Linux/DebugIntermediateStyle** and **/home/user/TBuild/tdesktop/Linux/ReleaseIntermediateStyle** and build for Debug
* Open MetaEmoji.pro, configure project with paths **/home/user/TBuild/tdesktop/Linux/DebugIntermediateEmoji** and **/home/user/TBuild/tdesktop/Linux/ReleaseIntermediateEmoji** and build for Debug
* Open MetaLang.pro, configure project with paths **/home/user/TBuild/tdesktop/Linux/DebugIntermediateLang** and **/home/user/TBuild/tdesktop/Linux/ReleaseIntermediateLang** and build for Debug
* Open Telegram.pro, configure project with paths **/home/user/TBuild/tdesktop/Linux/DebugIntermediate** and **/home/user/TBuild/tdesktop/Linux/ReleaseIntermediate** and build for Debug, if GeneratedFiles are not found click **Run qmake** from **Build** menu and try again
* Open Updater.pro, configure project with paths **/home/user/TBuild/tdesktop/Linux/DebugIntermediateUpdater** and **/home/user/TBuild/tdesktop/Linux/ReleaseIntermediateUpdater** and build for Debug
* Release Telegram build will require removing **CUSTOM_API_ID** definition in Telegram.pro project and may require changing paths in **/home/user/TBuild/tdesktop/Telegram/FixMake.sh** or **/home/user/TBuild/tdesktop/Telegram/FixMake32.sh** for static library linking fix, static linking applies only on second Release build (first uses old Makefile)