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## [Telegram D](https://tdesktop.com) –
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This is complete source code and build instructions for alpha version of unofficial desktop client for [Telegram ](https://telegram.org ) messenger, based on [Telegram API ](https://core.telegram.org/ ) and [MTProto ](https://core.telegram.org/mtproto ) secure protocol.
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Source code is published under GPL v3, license is available [here ](https://github.com/telegramdesktop/tdesktop/blob/master/LICENSE ).
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###Supported systems
Only Windows systems are supported at this moment, OS X and Linux builds are on their way.
* Windows XP
* Windows Vista
* Windows 7
* Windows 8 (**not** RT)
* Windows 8.1 (**not** RT)
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###Third-party
* Qt 5.3.0, slightly patched ([GPL](http://qt-project.org/doc/qt-5/gpl.html))
* OpenSSL 1.0.1g ([OpenSSL License](https://www.openssl.org/source/license.html))
* zlib 1.2.8 ([zlib License](http://www.zlib.net/zlib_license.html))
* libexif 0.6.20 ([LGPL](https://www.gnu.org/licenses/old-licenses/lgpl-2.1.en.html))
* LZMA SDK 9.20 ([public domain](http://www.7-zip.org/sdk.html))
* Open Sans font ([Apache License](http://www.apache.org/licenses/LICENSE-2.0.html))
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##Build instructions for Visual Studio 2013
###Prepare folder
Choose a folder for the future build, for example **D:\TBuild\** . There you will have two folders, **Libraries** for third-party libs and **tdesktop** (or **tdesktop-master** ) for the app.
###Clone source code
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By git – Git Bash ](http://git-scm.com/downloads ) go to ** /d/tbuild** and run
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git clone https://github.com/telegramdesktop/tdesktop.git
or download in ZIP and extract to **D:\TBuild\** , rename **tdesktop-master** to **tdesktop** to have **D:\TBuild\tdesktop\Telegram.sln** solution
###Prepare libraries
####OpenSSL 1.0.1g
https://www.openssl.org/related/binaries.html > **OpenSSL for Windows** > Download [**Win32 OpenSSL v1.0.1g** (16 Mb) ](http://slproweb.com/download/Win32OpenSSL-1_0_1g.exe )
Install to **D:\TBuild\Libraries\OpenSSL-Win32** , while installing **Copy OpenSSL DLLs to** choose **The OpenSSL binaries (/bin) directory**
####LZMA SDK 9.20
http://www.7-zip.org/sdk.html > Download [**LZMA SDK (C, C++, C#, Java)** 9.20 ](http://downloads.sourceforge.net/sevenzip/lzma920.tar.bz2 )
Extract to **D:\TBuild\Libraries**
#####Building library
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* Open in VS2013 **D:\TBuild\Libraries\lzma\C\Util\LzmaLib\LzmaLib.dsw** > One-way upgrade – **OK**
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* For **Debug** and **Release** configurations
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* LzmaLib Properties > General > Configuration Type = **Static library (.lib)** – **OK**
* LzmaLib Properties > Librarian > General > Target Machine = **MachineX86 (/MACHINE:X86)** – **OK**
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* Build Debug configuration
* Build Release configuration
####zlib 1.2.8
http://www.zlib.net/ > Download [**zlib source code, version 1.2.8, zipfile format** ](http://zlib.net/zlib128.zip )
Extract to **D:\TBuild\Libraries\**
#####Building library
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* Open in VS2013 **D:\TBuild\Libraries\zlib-1.2.8\contrib\vstudio\vc11\zlibvc.sln** > One-way upgrade – **OK**
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* We are interested only in **zlibstat** project, but it depends on some custom pre-build step, so build all
* For **Debug** configuration
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* zlibstat Properties > C/C++ > Code Generation > Runtime Library = **Multi-threaded Debug (/MTd)** – **OK**
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* For **Release** configuration
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* zlibstat Properties > C/C++ > Code Generation > Runtime Library = **Multi-threaded (/MT)** – **OK**
* Build Solution for Debug configuration – **zlibstat** project builds successfully
* Build Solution for Release configuration – **zlibstat** project builds successfully
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####libexif 0.6.20
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Get sources from https://github.com/telegramdesktop/libexif-0.6.20, by git – Git Bash ](http://git-scm.com/downloads ) go to ** /d/tbuild/libraries** and run
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git clone https://github.com/telegramdesktop/libexif-0.6.20.git
or download in ZIP and extract to **D:\TBuild\Libraries\** , rename **libexif-0.6.20-master** to **libexif-0.6.20** to have **D:\TBuild\Libraries\libexif-0.6.20\win32\lib_exif.sln** solution
#####Building library
* Open in VS2013 **D:\TBuild\Libraries\libexif-0.6.20\win32\lib_exif.sln**
* Build Debug configuration
* Build Release configuration
####Qt 5.3.0, slightly patched
http://download.qt-project.org/official_releases/qt/5.3/5.3.0/single/qt-everywhere-opensource-src-5.3.0.zip
Extract to **D:\TBuild\Libraries\** , rename **qt-everywhere-opensource-src-5.3.0** to **QtStatic** to have **D:\TBuild\Libraries\QtStatic\qtbase\** folder
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Apply patch – **D:\TBuild\tdesktop\\\_qt\_5\_3\_0\_patch\** to **D:\TBuild\Libraries\QtStatic\**
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#####Building library
* Install Python 3.3.2 from https://www.python.org/download/releases/3.3.2 > [**Windows x86 MSI Installer (3.3.2)** ](https://www.python.org/ftp/python/3.3.2/python-3.3.2.msi )
* Open **VS2013 x86 Native Tools Command Prompt.bat** (should be in ** \Program Files (x86)\Microsoft Visual Studio 12.0\Common7\Tools\Shortcuts\** folder)
There go to Qt directory
D:
cd TBuild\Libraries\QtStatic
and after that run configure
configure -debug-and-release -opensource -static -opengl desktop -mp -nomake examples -platform win32-msvc2013
y
to configure Qt build. After configuration is complete run
nmake
nmake install
building (**nmake** command) will take really long time.
####Qt Visual Studio Addin 1.2.3
http://download.qt-project.org/official_releases/vsaddin/qt-vs-addin-1.2.3-opensource.exe
Close all VS2013 instances and install to default location
###Building Telegram Desktop
* Launch VS2013 for configuring Qt Addin
* QT5 > Qt Options > Add
* Version name: **QtStatic.5.3.0**
* Path: **D:\TBuild\Libraries\QtStatic\qtbase**
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* Default Qt/Win version: **QtStatic.5.3.0** – **OK**
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* File > Open > Project/Solution > **D:\TBuild\tdesktop\Telegram.sln**
* Build \ Build Solution (Debug and Release configurations)
##Projects in Telegram solution
####Telegram
tdesktop messenger
####Updater
little app, that is launched by Telegram when update is ready, replaces all files and launches it back
####Packer
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compiles given files to single update file, compresses it with lzma and signs with a private key, it is not built in **Debug** and **Release** configurations of Telegram solution, because private key is inaccessible
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####Prepare
prepares a release for deployment, puts all files to deploy/{version} folder
* current tsetup{version}exe installer
* current Telegram.exe
* current Telegram.pdb (debug info for crash minidumps view)
* current tupdate{updversion} binary lzma update archive
####MetaEmoji
from two folders
* SourceFiles/art/Emoji
* SourceFiles/art/Emoji_200x
and some inner config creates four sprites and text2emoji replace code
* SourceFiles/art/emoji.png
* SourceFiles/art/emoji_125x.png
* SourceFiles/art/emoji_150x.png
* SourceFiles/art/emoji_200x.png
* SourceFiles/gui/emoji_config.cpp
####MetaStyle
from two files and two sprites
* Resources/style_classes.txt
* Resources/style.txt
* SourceFiles/art/sprite.png
* SourceFiles/art/sprite_200x.png
creates two other sprites, four sprite grids and style constants code
* SourceFiles/art/sprite_125x.png
* SourceFiles/art/sprite_150x.png
* SourceFiles/art/grid.png
* SourceFiles/art/grid_125x.png
* SourceFiles/art/grid_150x.png
* SourceFiles/art/grid_200x.png
* GeneratedFiles/style_classes.h
* GeneratedFiles/style_auto.h
* GeneratedFiles/style_auto.cpp
####MetaLang
from langpack file
* Resources/lang.txt
creates lang constants code and lang file parse code
* GeneratedFiles/lang.h
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* GeneratedFiles/lang.cpp
