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---
layout: documentation
title: Windows
---
Building Bazel on Windows
=========================
Windows support is highly experimental. Known issues are [marked with
label "Windows"](https://github.com/bazelbuild/bazel/issues?q=is%3Aissue+is%3Aopen+label%3AWindows)
on github issues.
We currently support only 64 bit Windows 7 or higher and we can only compile
msys2 binaries.
To bootstrap Bazel on Windows, you will need:
* Java JDK 8 or later
* Visual Studio (Community Edition is okay, only `CL.EXE` is needed)
* [msys2](https://msys2.github.io/) (need to be installed at
``C:\tools\msys64\``).
* Several msys2 packages. Use the ``pacman`` command to install them:
``pacman -S gcc git curl zip unzip zlib-devel``
To build Bazel:
* Open the msys2 shell.
* Clone the Bazel git repository as normal.
* Set the environment variables:
```bash
export JAVA_HOME="$(ls -d C:/Program\ Files/Java/jdk* | sort | tail -n 1)"
export BAZEL_SH=c:/tools/msys64/usr/bin/bash.exe
```
* Run ``compile.sh`` in Bazel directory.
* If all works fine, bazel will be built at ``output\bazel.exe``.
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