| --- |
| 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 |
| * [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 TMPDIR=c:/temp |
| 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``. |
