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---
layout: documentation
title: Compile Bazel from Source
---
# <a name="compiling-from-source"></a>Compile Bazel from source
1. Ensure that you have OpenJDK 8 installed on your system.
For a system based on debian packages (e.g., Debian, Ubuntu), install
OpenJDK 8 by running the command `sudo apt-get install openjdk-8-jdk`.
2. The standard way of compiling a release version of Bazel from source is to
use a distribution archive. Download `bazel-<VERSION>-dist.zip` from the
[release page](https://github.com/bazelbuild/bazel/releases) for the desired
version. We recommend to also verify the signature made by our
[release key](https://bazel.build/bazel-release.pub.gpg) 48457EE0.
3. Unzip the archive and call `bash ./compile.sh`; this will create a bazel
binary in `output/bazel`. This binary is self-contained, so it can be copied
to a directory on the PATH (such as `/usr/local/bin`) or used in-place.
## <a name="compiling-from-source-issues"></a>Known issues when compiling from source
### On Windows:
* version 0.4.4 and below: `compile.sh` may fail right after start with an error
like this:
```
File not found - *.jar
no error prone jar
```
Workaround is to run this (and add it to your `~/.bashrc`):
```
export PATH="/bin:/usr/bin:$PATH"
```
* version 0.4.3 and below: `compile.sh` may fail fairly early with many Java
compilation errors. The errors look similar to:
```
C:\...\bazel_VR1HFY7x\src\com\google\devtools\build\lib\remote\ExecuteServiceGrpc.java:11: error: package io.grpc.stub does not exist
import static io.grpc.stub.ServerCalls.asyncUnaryCall;
^
```
This is caused by a bug in one of the bootstrap scripts
(`scripts/bootstrap/compile.sh`). Manually apply this one-line fix if you want
to build Bazel purely from source (without using an existing Bazel binary):
[5402993a5e9065984a42eca2132ec56ca3aa456f]( https://github.com/bazelbuild/bazel/commit/5402993a5e9065984a42eca2132ec56ca3aa456f).
* version 0.3.2 and below:
[github issue #1919](https://github.com/bazelbuild/bazel/issues/1919)
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