Neutral build

Neutral build

In software development, a neutral build is a build that reflects the current state of the source code checked into the source code version control system by the developers and done in a neutral environment, that is in an environment not used for development.

A nightly build is a neutral build that takes place automatically. These typically take place when no one is likely to be working in the office so that there are no changes to the source code during the build. The results of the build are inspected by the arriving programmers, who generally place a priority on ensuring the recent changes to the source code have not broken the build process or functionality of the software.

When someone says a developer "broke the build", they are effectively saying that a developer checked in code which might very well have compiled (and hopefully also run properly) in their account, but does not compile (and therefore, cannot be run) in anyone else's account. This is typically due to additional developer-specific changes that were either not checked in, or (in the case of environment variables, etc.) were modifications to systems not under revision control. One of the most common cases is remembering to check in all modified files, but forgetting to add newly created files to the repository. If the other developers check out the new code without being aware of the problem, their work may grind to a halt while they wait for the problem to be fixed (or try to fix it themselves, which can be even more problematic, if multiple developers attempt to fix the issue at the same time). This naturally can result in a significant loss of productivity.

Neutral builds are important for software development processes running at high loads with short schedules (see extreme programming, startup); not having them means that any build that needs to be created for the software quality assurance department has to be created using code which may be in the middle of major modifications, and which would best be left out of a build for testing (particularly a build being evaluated for possible release).[clarification needed Is this a sentence?]

Neutral builds can be done on a machine which is also used for active development if enough caution[weasel words] is taken, but it is safer to dedicate a machine to that purpose because an issue in the build process could cause the machine to become unstable.

Hazards

Some noteworthy obstacles to a reliable neutral build process are:

  • Getting a consistent set of makefiles and other project control files. This step tends to expose consistency problems between various development machines, particularly with respect to directory structures, compiler and linker options, and environment variables.
  • Having the same operating system and tools setup as the development machines. Again, this step tends to expose differences between the machines in use by different developers.
  • Having an automated checkout procedure that completely cleans out the target directory first, and gets all files required. Ideally, however, the system doesn't waste time with large files that aren't required.
  • Integrating with the version control system, particularly if encryption, authentication, or both are being used (see SSH). This must be done with care, as it is typically very easy to make it "work" without being secure, and the temptation or pressure to just "fix it later" may be strong.
  • Ensuring all materials come from the correct directory. It is strongly recommended that there be only one copy of the source tree on the neutral build machine.
  • Problems with version numbering.[clarification needed]
  • Decoupling the build process from specific IDEs. This is tough to convince some people to do, but in the end, it leads to cleaner build processes. Trouble usually arises in areas such as EJBs (especially with IBM's WebSphere product which requires the use of one of their IDEs to generate some binary files).
  • Getting adequate feedback from the build system so that you can tell what is broken when something breaks. The worst kind of feedback is simply a lack of linked binary files; the best identifies not only compilation failures, but linker failures, missing source materials, missing include directories, and so on.
  • Understanding the difference between branching and releasing. Releasing software requires a branch whose state can be returned to. A release is usually a tag on a branch or mainline like the HEAD. A branch can be used for parallel development or for patch releases to a release. A branch is not necessarily a release.
  • Ensuring developer environments are easy to set up and get into a useful state. The varied state of machines and software installations can make this task quite daunting.
  • Convincing management of the benefit of automated builds.

Wikimedia Foundation. 2010.

Look at other dictionaries:

  • neutral ground — n. Louisiana & Southern Mississippi 1) See MEDIAN(Cf. ↑median). 2) The grass strip, often planted with shade trees, between a sidewalk and a street. Word History: The term neutral ground originates in the 1800s in New Orleans, when Anglophone… …   Word Histories

  • Neutral Nations Supervisory Commission — Entrance to the NNSC camp (Photo January 1976 from CP# 5). The Neutral Nations Supervisory Commission (NNSC) was established by the Korean Armistice Agreement signed July 27, 1953, ending the Korean War. It is, with the Military Armistice… …   Wikipedia

  • Wikipedia:Neutral point of view — Wikipedia:Point of view redirects here. For the essay on how to describe points of view, see Wikipedia:Describing points of view. To raise issues with specific articles, see the NPOV noticeboard. For advice on applying this policy, see the NPOV… …   Wikipedia

  • Biker Build-Off — infobox television show name = Biker Build Off caption = format = Reality television runtime = 45 Minutes creator = Thom Beers narrated = Thom Beers starring = Hugh King (Master of Ceremonies) country = USA network = Discovery Channel first aired …   Wikipedia

  • The Neutral Ally — Norway is at times referred to as The Neutral Ally . During World War I, while theoretically a neutral country, British pressure and anti German sentiment in the population enabled the government to highly favour Britain in matters concerning the …   Wikipedia

  • XBMC — Media Center XBMC Media Center Home Screen Developer(s) …   Wikipedia

  • XBMC — Saltar a navegación, búsqueda XBMC Desarrollador Team XBMC Información general Última versión estable Neutral build from SVN …   Wikipedia Español

  • international relations — a branch of political science dealing with the relations between nations. [1970 75] * * * Study of the relations of states with each other and with international organizations and certain subnational entities (e.g., bureaucracies and political… …   Universalium

  • china — /chuy neuh/, n. 1. a translucent ceramic material, biscuit fired at a high temperature, its glaze fired at a low temperature. 2. any porcelain ware. 3. plates, cups, saucers, etc., collectively. 4. figurines made of porcelain or ceramic material …   Universalium

  • China — /chuy neuh/, n. 1. People s Republic of, a country in E Asia. 1,221,591,778; 3,691,502 sq. mi. (9,560,990 sq. km). Cap.: Beijing. 2. Republic of. Also called Nationalist China. a republic consisting mainly of the island of Taiwan off the SE coast …   Universalium

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”