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# How To Add Your Build Configuration To LLVM Buildbot Infrastructure

Section author: Galina Kistanova <gkistanova@gmail.com>

## Introduction

This document contains information about adding a build configuration and buildslave to private slave builder to LLVM Buildbot Infrastructure http://lab.llvm.org:8011.

## Steps To Add Builder To LLVM Buildbot

Volunteers can provide their build machines to work as build slaves to public LLVM Buildbot.

Here are the steps you can follow to do so:

1. Check the existing build configurations to make sure the one you are interested in is not covered yet or gets built on your computer much faster than on the existing one. We prefer faster builds so developers will get feedback sooner after changes get committed.

2. The computer you will be registering with the LLVM buildbot infrastructure should have all dependencies installed and you can actually build your configuration successfully. Please check what degree of parallelism (-j param) would give the fastest build. You can build multiple configurations on one computer.

3. Install buildslave (currently we are using buildbot version 0.8.5). Depending on the platform, buildslave could be available to download and install with your packet manager, or you can download it directly from http://trac.buildbot.net and install it manually.

4. Create a designated user account, your buildslave will be running under, and set appropriate permissions.

5. Choose the buildslave root directory (all builds will be placed under it), buildslave access name and password the build master will be using to authenticate your buildslave.

6. Create a buildslave in context of that buildslave account. Point it to the lab.llvm.org port 9990 (see Buildbot documentation, Creating a slave for more details) by running the following command:

   >     $ buildslave create-slave <buildslave-root-directory> \
   >                  lab.llvm.org:9990 \
   >                  <buildslave-access-name> <buildslave-access-password>

7. Fill the buildslave description and admin name/e-mail. Here is an example of the buildslave description:

       Windows 7 x64
       Core i7 (2.66GHz), 16GB of RAM

       g++.exe (TDM-1 mingw32) 4.4.0
       GNU Binutils 2.19.1
       cmake version 2.8.4
       Microsoft(R) 32-bit C/C++ Optimizing Compiler Version 16.00.40219.01 for 80x86

8. Make sure you can actually start the buildslave successfully. Then set up your buildslave to start automatically at the start up time. See the buildbot documentation for help. You may want to restart your computer to see if it works.

9. Send a patch which adds your build slave and your builder to zorg.

   - slaves are added to `buildbot/osuosl/master/config/slaves.py`
   - builders are added to `buildbot/osuosl/master/config/builders.py`

10. Send the buildslave access name and the access password directly to Galina Kistanova, and wait till she will let you know that your changes are applied and buildmaster is reconfigured.

11. Check the status of your buildslave on the Waterfall Display to make sure it is connected, and `http://lab.llvm.org:8011/buildslaves/<your-buildslave-name>` to see if administrator contact and slave information are correct.

12. Wait for the first build to succeed and enjoy.

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