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Howto:Submit patches

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Revision as of 14:06, 20 April 2006 by Hellosimon (Talk | contribs)

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Patch Guidlines

Any invasive or non-trivial patches should preferably adhere to the following recommendations:

Try to make your patch optionally minimally invasive:

  • provide compile time switches to generally enable or disable your modifications (i.e. using #ifdefs, autoconf and automake macros) That way, you will ensure that your patch can be easily disabled (excluded from compilation while remaining in the source tree) if it should cause trouble while any issues are addressed
  • provide capabilities to enable or disable your code modifications at startup time or even at runtime, using command line options or preferably the PropertyTree and some simple GUI dialog to enable developers and users to decide whether they want to activate your code. That way, it can be ensured that your code doesn't interfere with any other FlightGear components. This will make potential bug tracking much easier.

Try to carefully document those passages in your source code that:

  • are non-obvious
  • are hackish or workarounds
  • use code where you yourself aren't entirely sure if you're doing the right thing
  • are known to negatively interfere with other FlightGear code

Patch Format

TODO: unified diff vs. tarball (compressed archives)

Howto Create Patches

TODO: links to diff/patch tutorials link to diff/patch utilities for various platforms

recommended: KDiff3 (QT based cross platform, GUI frontend to GNU diff/patch) http://kdiff3.sourceforge.net

Where to Send Patches

Developers with CVS access :

FlightGear developer mailing list(subscription required)

(any non-trivial or larger patches should preferably not be sent by email, but rather made available by putting a tarball of your patch on some free webspace, so that people can simply download your patch if they are interested