Continuous Build: Difference between revisions

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(Overhaul page, describe the Buildbot Worker setup more easy.)
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We are using [https://buildbot.net/ Buildbot] to build and test the current development version of Octave on multiple systems in a number of different configurations.
GNU Octave uses [https://buildbot.net/ Buildbot] to build and test the current development version on multiple systems in a number of different configurations.


{{Note|The current status of the builds may be found at http://buildbot.octave.org:8010/#/waterfall.}}
{{Note|The current status of the builds may be found at http://buildbot.octave.org:8010/#/waterfall.}}
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= Build Slave Configuration =
= Setup and run a Buildbot Worker =


To run a build slave for Octave, you must do the following:
Your system may be behind a firewall.  It does not have to have a distinct public IP address.


* Contact the [mailto:octave-maintainers@gnu.org Octave Maintainers] mailing list to let us know that you wish to provide a system to use as a build slave.
To support Octave development and run a Buildbot Worker, you must do the following:
 
* Contact the [https://octave.discourse.group/c/maintainers/7 Octave Maintainers on Discourse] to let us know that you wish to provide a system to use as a Buildbot Worker.  We will give you a <code>WORKERNAME</code> and a '''secret''' <code>PASSWORD</code> to configure your Buildbot Worker.
* Install buildbot.  Packages exist for most distributions.  See the buildbot docs for other options.  You should create a separate user account with no special privileges that will run buildbot.
* Install buildbot.  Packages exist for most distributions.  See the buildbot docs for other options.  You should create a separate user account with no special privileges that will run buildbot.
* Create a configuration file (see below).
* Decide for a <code>BASEDIR</code>.  For example, if the home directory for the buildbot user is {{Path|/var/lib/buildbot}} and your <code>WORKERNAME</code> is set to <code>'debian-x86_64'</code> , then <code>BASEDIR</code> might be {{Path|/var/lib/buildbot/worker/debian-x86_64}}.
* Run buildbot on the slave system, preferably by starting it automatically when your system boots.  It should be running with the buildbot user ID.
* <code>MASTERHOST</code> is <code>buildbot.octave.org</code> and <code>PORT</code> is <code>9989</code>.
* Create the configuration<pre>buildbot-worker create-worker BASEDIR MASTERHOST:PORT WORKERNAME PASSWORD</pre>
* Run buildbot on the worker system, preferably by starting it automatically when your system boots.  It should be running with the buildbot user ID. <pre>buildbot-worker start BASEDIR</pre>


You may also want to set up '''ccache''' to work with buildbot (strongly recommended to speed up builds).  If you create a directory {{Path|~/buildbot/bin}}, it will be added to the execution PATH when buildbot runs commands on the slave.  This directory can have symbolic links like the following:
== ccache ==
 
You may also want to set up '''ccache''' to work with buildbot (strongly recommended to speed up builds).  If you create a directory {{Path|~/buildbot/bin}}, it will be added to the execution PATH when the Buildbot Master runs commands on the Buildbot Worker.  This directory can have symbolic links like the following:


  lrwxrwxrwx 1 buildbot buildbot 15 Aug 26 11:39 gcc -> /usr/bin/ccache
  lrwxrwxrwx 1 buildbot buildbot 15 Aug 26 11:39 gcc -> /usr/bin/ccache
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They should point to the actual location of ccache if it is not in {{Path|/usr/bin}}.
They should point to the actual location of ccache if it is not in {{Path|/usr/bin}}.
Your system may be behind a firewall.  It does not have to have a distinct public IP address.
== Sample Slave Configuration File ==
You must edit the settings for <code>basedir</code>, <code>slavename</code>, and <code>password</code>.  The <code>basedir</code> should be the absolute and fully expanded name of the directory containing the configuration file.  For example, if the home directory for the buildbot user is {{Path|/var/lib/buildbot}} and your <code>slavename</code> is set to 'debian-x86_64' , then <code>basedir</code> might be {{Path|/var/lib/buildbot/slaves/debian-x86_64}}.  The password should not be anything valuable.  You'll be asked to provide the <code>slavename</code> and <code>password</code> so that they may be added to the master configuration on buildbot.octave.org.  Do '''not''' post the password to the octave-maintainers mailing list.
<syntaxhighlight lang="python">
import os
from buildslave.bot import BuildSlave
from twisted.application import service
basedir = '/PATH/TO/DIRECTORY/CONTAINING/THIS/CONFIGURATION/FILE'
rotateLength = 10000000
maxRotatedFiles = 10
# if this is a relocatable tac file, get the directory containing the TAC
if basedir == '.':
    import os.path
    basedir = os.path.abspath(os.path.dirname(__file__))
# note: this line is matched against to check that this is a buildslave
# directory; do not edit it.
application = service.Application('buildslave')
try:
  from twisted.python.logfile import LogFile
  from twisted.python.log import ILogObserver, FileLogObserver
  logfile = LogFile.fromFullPath(os.path.join(basedir, "twistd.log"), rotateLength=rotateLength,
                                maxRotatedFiles=maxRotatedFiles)
  application.setComponent(ILogObserver, FileLogObserver(logfile).emit)
except ImportError:
  # probably not yet twisted 8.2.0 and beyond, can't set log yet
  pass
buildmaster_host = 'buildbot.octave.org'
port = 9989
slavename = 'SLAVE-NAME'
passwd = 'PASSWORD'
keepalive = 600
usepty = 0
umask = None
maxdelay = 300
allow_shutdown = None
s = BuildSlave(buildmaster_host, port, slavename, passwd, basedir,
              keepalive, usepty, umask=umask, maxdelay=maxdelay,
              allow_shutdown=allow_shutdown)
s.setServiceParent(application)
</syntaxhighlight>


== Space Requirements ==
== Space Requirements ==
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If the directory containing the build and ccache directories doesn't have sufficient space, then these directory names may point to a separate partition that does have enough space available.
If the directory containing the build and ccache directories doesn't have sufficient space, then these directory names may point to a separate partition that does have enough space available.
== Starting the Slave ==
With everything in place, you can run the slave server with the following commands (assuming that your <code>basedir</code> is {{Path|/var/lib/buildbot/slaves/debian-x86_64}}).
cd ~buildbot/slaves
sudo -u buildbot buildslave start debian-x86_64


[[Category:Building]]
[[Category:Building]]

Revision as of 02:22, 29 July 2020

GNU Octave uses Buildbot to build and test the current development version on multiple systems in a number of different configurations.

Info icon.svg
The current status of the builds may be found at http://buildbot.octave.org:8010/#/waterfall.

Systems and Configurations

The following systems and configurations are currently covered for Octave builds:

Builder ID Hg Version System Compiler Build Options Frequency
clang-3.8-debian default Debian Testing Clang 3.8 Disable GraphicsMagick Any Change
clang-4.0-debian default Debian Testing Clang 4.0 Any Change
clang-5.0-debian default Debian Testing Clang 5.0 Any Change
clang-fedora default Fedora 25 Clang (system default) Any Change
clang-osx default OS X Clang Any Change
gcc-6-debian default Debian Testing GCC 6 Any Change
gcc-7-debian default Debian Testing GCC 7 Any Change
gcc-7-lto-debian default Debian Testing GCC (system default) Any Change
gcc-fedora default Fedora 25 GCC (system default) Any Change
gcc-lto-fedora default Fedora 25 GCC (system default) Enable link time optimization Any Change
no-extras-debian default Debian Testing GCC (system default) Disable all optional dependencies Any Change

And for mxe-octave:

Builder ID Hg Version Build System Host System Compiler Build Options Frequency
mxe-native-all-on-debian default Debian Testing Debian GCC (system default) GNU Linux, build all dependencies Daily
mxe-native-on-debian default Debian Testing Debian GCC (system default) GNU Linux, use system compiler, fontconfig, and X11 libraries Daily
w32-on-debian default Debian Testing Windows GCC (mxe-octave default) Windows 32 Daily
w32-stable-on-debian stable Debian Testing Windows GCC (mxe-octave default) Windows 32 Daily
w64-32-on-debian default Debian Testing Windows GCC (mxe-octave default) Windows 64 Daily
w64-32-stable-on-debian stable Debian Testing Windows GCC (mxe-octave default) Windows 64 Daily
w64-64-on-debian default Debian Testing Windows GCC (mxe-octave default) Windows 64, 64-bit indexing Daily

Setup and run a Buildbot Worker

Your system may be behind a firewall. It does not have to have a distinct public IP address.

To support Octave development and run a Buildbot Worker, you must do the following:

  • Contact the Octave Maintainers on Discourse to let us know that you wish to provide a system to use as a Buildbot Worker. We will give you a WORKERNAME and a secret PASSWORD to configure your Buildbot Worker.
  • Install buildbot. Packages exist for most distributions. See the buildbot docs for other options. You should create a separate user account with no special privileges that will run buildbot.
  • Decide for a BASEDIR. For example, if the home directory for the buildbot user is /var/lib/buildbot and your WORKERNAME is set to 'debian-x86_64' , then BASEDIR might be /var/lib/buildbot/worker/debian-x86_64.
  • MASTERHOST is buildbot.octave.org and PORT is 9989.
  • Create the configuration
    buildbot-worker create-worker BASEDIR MASTERHOST:PORT WORKERNAME PASSWORD
  • Run buildbot on the worker system, preferably by starting it automatically when your system boots. It should be running with the buildbot user ID. 
    buildbot-worker start BASEDIR

ccache

You may also want to set up ccache to work with buildbot (strongly recommended to speed up builds). If you create a directory ~/buildbot/bin, it will be added to the execution PATH when the Buildbot Master runs commands on the Buildbot Worker. This directory can have symbolic links like the following: 

lrwxrwxrwx 1 buildbot buildbot 15 Aug 26 11:39 gcc -> /usr/bin/ccache
lrwxrwxrwx 1 buildbot buildbot 15 Aug 26 11:40 cc -> /usr/bin/ccache
lrwxrwxrwx 1 buildbot buildbot 15 Aug 26 11:40 c++ -> /usr/bin/ccache
lrwxrwxrwx 1 buildbot buildbot 15 Aug 31 23:46 gfortran -> /usr/bin/ccache

They should point to the actual location of ccache if it is not in /usr/bin.

Space Requirements

Building Octave takes a significant amount of disk space. With debugging symbols, you may need several GB for each build, plus room for ccache (possibly 50GB) if you use it. If you use a cache size that is larger than the default, you'll need to specify that in the .ccache/ccache.conf file using a line like 

max_size = 50G

If the directory containing the build and ccache directories doesn't have sufficient space, then these directory names may point to a separate partition that does have enough space available.

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