# Build instructions for Windows

- [Prepare folder](#prepare-folder)
- [Install third party software](#install-third-party-software)
- [Clone source code and prepare libraries](#clone-source-code-and-prepare-libraries)
- [Build the project](#build-the-project)
- [Qt Visual Studio Tools](#qt-visual-studio-tools)

## Prepare folder

Choose an empty folder for the future build, for example **D:\\TBuild**. It will be named ***BuildPath*** in the rest of this document. Create two folders there, ***BuildPath*\\ThirdParty** and ***BuildPath*\\Libraries**.

All commands (if not stated otherwise) will be launched from **x86 Native Tools Command Prompt for VS 2019.bat** (should be in **Start Menu > Visual Studio 2019** menu folder). Pay attention not to use any other Command Prompt.

### Obtain your API credentials

You will require **api_id** and **api_hash** to access the Telegram API servers. To learn how to obtain them [click here][api_credentials].

## Install third party software

* Download **Strawberry Perl** installer from [http://strawberryperl.com/](http://strawberryperl.com/) and install to ***BuildPath*\\ThirdParty\\Strawberry**
* Download **NASM** installer from [http://www.nasm.us](http://www.nasm.us) and install to ***BuildPath*\\ThirdParty\\NASM**
* Download **Yasm** executable from [http://yasm.tortall.net/Download.html](http://yasm.tortall.net/Download.html), rename to *yasm.exe* and put to ***BuildPath*\\ThirdParty\\yasm**
* Download **MSYS2** installer from [http://www.msys2.org/](http://www.msys2.org/) and install to ***BuildPath*\\ThirdParty\\msys64**
* Download **jom** archive from [http://download.qt.io/official_releases/jom/jom.zip](http://download.qt.io/official_releases/jom/jom.zip) and unpack to ***BuildPath*\\ThirdParty\\jom**
* Download **Python 3.9** installer from [https://www.python.org/downloads/](https://www.python.org/downloads/) and install to ***BuildPath*\\ThirdParty\\Python39**
* Download **CMake** installer from [https://cmake.org/download/](https://cmake.org/download/) and install to ***BuildPath*\\ThirdParty\\cmake**
* Download **Ninja** executable from [https://github.com/ninja-build/ninja/releases/download/v1.7.2/ninja-win.zip](https://github.com/ninja-build/ninja/releases/download/v1.7.2/ninja-win.zip) and unpack to ***BuildPath*\\ThirdParty\\Ninja**
* Download **Git** installer from [https://git-scm.com/download/win](https://git-scm.com/download/win) and install it.
* Download **NuGet** executable from [https://dist.nuget.org/win-x86-commandline/latest/nuget.exe](https://dist.nuget.org/win-x86-commandline/latest/nuget.exe) and put to ***BuildPath*\\ThirdParty\\NuGet**

Add **Python 3.9** and **NuGet** to your PATH:

* Open **Control Panel** -> **System** -> **Advanced system settings**.
* Press **Environment Variables...**.
* Select **Path**.
* Press **Edit**.
* Add ***BuildPath*\\ThirdParty\\Python39** value.
* Add ***BuildPath*\\ThirdParty\\NuGet** value.

Open **x86 Native Tools Command Prompt for VS 2019.bat**, go to ***BuildPath*** and run

    python -m pip install pywin32

## Clone source code and prepare libraries

Open **x86 Native Tools Command Prompt for VS 2019.bat**, go to ***BuildPath*** and run

    git clone --recursive https://github.com/telegramdesktop/tdesktop.git
    tdesktop\Telegram\build\prepare\win.bat

## Build the project

Go to ***BuildPath*\\tdesktop\\Telegram** and run (using [your **api_id** and **api_hash**](#obtain-your-api-credentials))

    configure.bat -D TDESKTOP_API_ID=YOUR_API_ID -D TDESKTOP_API_HASH=YOUR_API_HASH -D DESKTOP_APP_USE_PACKAGED=OFF -D DESKTOP_APP_DISABLE_CRASH_REPORTS=OFF

* Open ***BuildPath*\\tdesktop\\out\\Telegram.sln** in Visual Studio 2019
* Select Telegram project and press Build > Build Telegram (Debug and Release configurations)
* The result Telegram.exe will be located in **D:\TBuild\tdesktop\out\Debug** (and **Release**)

### Qt Visual Studio Tools

For better debugging you may want to install Qt Visual Studio Tools:

* Open **Extensions** -> **Manage Extensions**
* Go to **Online** tab
* Search for **Qt**
* Install **Qt Visual Studio Tools** extension

[api_credentials]: api_credentials.md
