##Build instructions for Visual Studio 2015

###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

By git – in Git Bash go to /d/tbuild and run

 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

Open VS2015 x86 Native Tools Command Prompt.bat (should be in Start Menu > Programs > Visual Studio 2015 menu folder), go to D:\TBuild\Libraries and run

git clone https://github.com/openssl/openssl.git
cd openssl
git checkout OpenSSL_1_0_1-stable
git apply ./../../tdesktop/Telegram/_openssl_patch.diff
perl Configure VC-WIN32 --prefix=D:\TBuild\Libraries\openssl\Release
ms\do_ms
nmake -f ms\nt.mak
nmake -f ms\nt.mak install
cd ..
git clone https://github.com/openssl/openssl.git openssl_debug
cd openssl_debug
git checkout OpenSSL_1_0_1-stable
git apply ./../../tdesktop/Telegram/_openssl_patch.diff
perl Configure debug-VC-WIN32 --prefix=D:\TBuild\Libraries\openssl_debug\Debug
ms\do_ms
nmake -f ms\nt.mak
nmake -f ms\nt.mak install

####LZMA SDK 9.20

http://www.7-zip.org/sdk.html > Download LZMA SDK (C, C++, C#, Java) 9.20

Extract to D:\TBuild\Libraries

#####Building library

• Open in VS2015 D:\TBuild\Libraries\lzma\C\Util\LzmaLib\LzmaLib.dsw > One-way upgrade – OK
• For Debug and Release configurations
  • LzmaLib Properties > General > Configuration Type = Static library (.lib) – OK
  • LzmaLib Properties > Librarian > General > Target Machine = MachineX86 (/MACHINE:X86) – OK
• Build Debug configuration
• Build Release configuration

####zlib 1.2.8

http://www.zlib.net/ > Download zlib source code, version 1.2.8, zipfile format

Extract to D:\TBuild\Libraries\

#####Building library

• Open in VS2015 D:\TBuild\Libraries\zlib-1.2.8\contrib\vstudio\vc11\zlibvc.sln > One-way upgrade – OK
• We are interested only in zlibstat project, but it depends on some custom pre-build step, so build all
• For Debug configuration
  • zlibstat Properties > C/C++ > Code Generation > Runtime Library = Multi-threaded Debug (/MTd) – OK
• For Release configuration
  • zlibstat Properties > C/C++ > Code Generation > Runtime Library = Multi-threaded (/MT) – OK
• Build Solution for Debug configuration – only zlibstat project builds successfully
• Build Solution for Release configuration – only zlibstat project builds successfully

####libexif 0.6.20

Get sources from https://github.com/telegramdesktop/libexif-0.6.20, by git – in Git Bash go to /d/tbuild/libraries and run

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 VS2015 D:\TBuild\Libraries\libexif-0.6.20\win32\lib_exif.sln
• Build Debug configuration
• Build Release configuration

####OpenAL Soft, slightly patched

Open VS2015 x86 Native Tools Command Prompt.bat (should be in Start Menu > Programs > Visual Studio 2015 menu folder), go to D:\TBuild\Libraries and run

git clone git://repo.or.cz/openal-soft.git
git checkout 90349b38
git apply ./../../tdesktop/Telegram/_openal_patch.diff

#####Building library

• Install CMake

• Open VS2015 x86 Native Tools Command Prompt.bat (should be in Start Menu > Programs > Visual Studio 2015 menu folder), go to *D:\TBuild\Libraries\openal-soft\build* and run

  cmake -G "Visual Studio 14 2015" -D LIBTYPE:STRING=STATIC -D FORCE_STATIC_VCRT:STRING=ON ..

• Open in VS2015 D:\TBuild\Libraries\openal-soft\build\OpenAL.sln and build Debug and Release configurations

####Opus codec

Get sources by git – in Git Bash go to /d/tbuild/libraries and run

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

to have D:\TBuild\Libraries\opus\win32

#####Building libraries

• Open in VS2015 D:\TBuild\Libraries\opus\win32\VS2010\opus.sln
• Build Debug configuration
• Build Release configuration (it will be required in FFmpeg build!)

####FFmpeg

Open VS2015 x86 Native Tools Command Prompt.bat (should be in Start Menu > Programs > Visual Studio 2015 menu folder) and run

git clone https://github.com/FFmpeg/FFmpeg.git ffmpeg
cd ffmpeg
git checkout release/2.8

http://msys2.github.io/ > Download msys2-x86_64-20150512.exe and install to D:\msys64

#####Building libraries

Download yasm for Win64 from http://yasm.tortall.net/Download.html, rename yasm-1.3.0-win64.exe to yasm.exe and place it to your Visual C++ bin directory, like \Program Files (x86)\Microsoft Visual Studio 14\VC\bin\

Open VS2015 x86 Native Tools Command Prompt.bat (should be in Start Menu > Programs > Visual Studio 2015 menu folder), go to D:\msys64\ and launch msys2_shell.bat, there run

PATH="/c/Program Files (x86)/Microsoft Visual Studio 14.0/VC/BIN:$PATH"

cd /d/TBuild/Libraries/ffmpeg
pacman -Sy
pacman -S msys/make
pacman -S mingw64/mingw-w64-x86_64-opus
pacman -S diffutils
pacman -S pkg-config

PKG_CONFIG_PATH="/mingw64/lib/pkgconfig:$PKG_CONFIG_PATH"

./configure --toolchain=msvc --disable-programs --disable-everything --enable-libopus --enable-decoder=aac --enable-decoder=aac_latm --enable-decoder=aasc --enable-decoder=mp1 --enable-decoder=mp1float --enable-decoder=mp2 --enable-decoder=mp2float --enable-decoder=mp3 --enable-decoder=mp3adu --enable-decoder=mp3adufloat --enable-decoder=mp3float --enable-decoder=mp3on4 --enable-decoder=mp3on4float --enable-decoder=wavpack --enable-decoder=opus --enable-decoder=vorbis --enable-decoder=wmalossless --enable-decoder=wmapro --enable-decoder=wmav1 --enable-decoder=wmav2 --enable-decoder=wmavoice --enable-decoder=flac --enable-encoder=libopus --enable-parser=aac --enable-parser=aac_latm --enable-parser=mpegaudio --enable-parser=opus --enable-parser=vorbis --enable-parser=flac --enable-demuxer=aac --enable-demuxer=wav --enable-demuxer=mp3 --enable-demuxer=ogg --enable-demuxer=mov --enable-demuxer=flac --enable-muxer=ogg --enable-muxer=opus --extra-ldflags="-libpath:/d/TBuild/Libraries/opus/win32/VS2010/Win32/Release celt.lib silk_common.lib silk_float.lib"

make
make install

####Qt 5.5.1, slightly patched

• Install Python 3.3.2 from https://www.python.org/download/releases/3.3.2 > Windows x86 MSI Installer (3.3.2)
• Open VS2015 x86 Native Tools Command Prompt.bat (should be in Start Menu > Programs > Visual Studio 2015 menu folder)

There go to Libraries directory

D:
cd TBuild\Libraries

and run

git clone git://code.qt.io/qt/qt5.git QtStatic
cd QtStatic
git checkout 5.5
perl init-repository --module-subset=qtbase,qtimageformats
git checkout v5.5.1
cd qtimageformats && git checkout v5.5.1 && cd ..
cd qtbase && git checkout v5.5.1 && cd ..

#####Apply the patch

cd qtbase && git apply ../../../tdesktop/Telegram/_qtbase_5_5_1_patch.diff && cd ..

#####Building library

configure -debug-and-release -opensource -confirm-license -static -I "D:\TBuild\Libraries\openssl\Release\include" -L "C:\Program Files (x86)\Microsoft SDKs\Windows\v7.1A\Lib" -l Gdi32 -no-opengl -openssl-linked OPENSSL_LIBS_DEBUG="D:\TBuild\Libraries\openssl_debug\Debug\lib\ssleay32.lib D:\TBuild\Libraries\openssl_debug\Debug\lib\libeay32.lib" OPENSSL_LIBS_RELEASE="D:\TBuild\Libraries\openssl\Release\lib\ssleay32.lib D:\TBuild\Libraries\openssl\Release\lib\libeay32.lib" -mp -nomake examples -nomake tests -platform win32-msvc2015
nmake
nmake install

building (nmake command) will take really long time.

####Qt5Package

https://visualstudiogallery.msdn.microsoft.com/c89ff880-8509-47a4-a262-e4fa07168408

Download, close all VS2015 instances and install for VS2015

###Building Telegram Desktop

• Launch VS2015 for configuring Qt5Package
• QT5 > Qt Options > Add
  • Version name: QtStatic.5.5.1
  • Path: D:\TBuild\Libraries\QtStatic\qtbase
• Default Qt/Win version: QtStatic.5.5.1 – OK
• File > Open > Project/Solution > D:\TBuild\tdesktop\Telegram.sln
• Build \ Build Solution (Debug and Release configurations)