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63 lines
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3.4 KiB
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Executable file
1 Introduction
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This document describes some guidelines for people participating
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in lwIP development.
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2 How to contribute to lwIP
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Here is a short list of suggestions to anybody working with lwIP and
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trying to contribute bug reports, fixes, enhancements, platform ports etc.
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First of all as you may already know lwIP is a volunteer project so feedback
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to fixes or questions might often come late. Hopefully the bug and patch tracking
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features of Savannah help us not lose users' input.
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2.1 Source code style:
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1. do not use tabs.
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2. indentation is two spaces per level (i.e. per tab).
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3. end debug messages with a trailing newline (\n).
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4. one space between keyword and opening bracket.
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5. no space between function and opening bracket.
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6. one space and no newline before opening curly braces of a block.
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7. closing curly brace on a single line.
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8. spaces surrounding assignment and comparisons.
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9. don't initialize static and/or global variables to zero, the compiler takes care of that.
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10. use current source code style as further reference.
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2.2 Source code documentation style:
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1. JavaDoc compliant and Doxygen compatible.
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2. Function documentation above functions in .c files, not .h files.
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(This forces you to synchronize documentation and implementation.)
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3. Use current documentation style as further reference.
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2.3 Bug reports and patches:
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1. Make sure you are reporting bugs or send patches against the latest
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sources. (From the latest release and/or the current CVS sources.)
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2. If you think you found a bug make sure it's not already filed in the
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bugtracker at Savannah.
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3. If you have a fix put the patch on Savannah. If it is a patch that affects
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both core and arch specific stuff please separate them so that the core can
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be applied separately while leaving the other patch 'open'. The prefered way
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is to NOT touch archs you can't test and let maintainers take care of them.
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This is a good way to see if they are used at all - the same goes for unix
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netifs except tapif.
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4. Do not file a bug and post a fix to it to the patch area. Either a bug report
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or a patch will be enough.
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If you correct an existing bug then attach the patch to the bug rather than creating a new entry in the patch area.
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5. Trivial patches (compiler warning, indentation and spelling fixes or anything obvious which takes a line or two)
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can go to the lwip-users list. This is still the fastest way of interaction and the list is not so crowded
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as to allow for loss of fixes. Putting bugs on Savannah and subsequently closing them is too much an overhead
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for reporting a compiler warning fix.
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6. Patches should be specific to a single change or to related changes.Do not mix bugfixes with spelling and other
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trivial fixes unless the bugfix is trivial too.Do not reorganize code and rename identifiers in the same patch you
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change behaviour if not necessary.A patch is easier to read and understand if it's to the point and short than
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if it's not to the point and long :) so the chances for it to be applied are greater.
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2.4 Platform porters:
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1. If you have ported lwIP to a platform (an OS, a uC/processor or a combination of these) and
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you think it could benefit others[1] you might want discuss this on the mailing list. You
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can also ask for CVS access to submit and maintain your port in the contrib CVS module.
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