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How to ask questions about WebKit

The following tips are for new members of any WebKit mailing list who want to get help on learning WebKit. These include advice on other ways to find answers and help that go beyond the WebKit's mailing lists.

Search the archives

Your question may have already been answered. Make sure you search at least webkit-help and webkit-dev archives. There are two ways to query the archives: doing a web search or the gmane archives.

You can limit a web search to the mailing lists' archives by using "".

Here is a small example on how to query information about 'RenderLayer' on the previous mailing lists archives:

Be precise

Give as many details as possible. Generic questions will likely not get a valuable answer.

Make sure you include at least:

Depending on your issue, make also sure to include:

If one of these item is very long (hundreds of lines), do not paste it in the email. Instead use (or other similar services) and include the link in the email.

Since we cannot read your mind, the more you give us, the easier it will be for us to help you.

An example of question


WebKit does not compile!


When building Apple's port revision 34567 using "Tools/Scripts/build-webkit --debug --no-svg", I get the following error:

Cannot find class Foobar.

(You can find the complete output here: I have looked at the archives and the commits but did not find any solution. Does anyone know what could be the issue and whether this has been fixed?

Usual questions and answers

There are some questions that appear regularly on the mailing list. We have included the answers here for your convenience.

Does WebKit support Foo?

The most reliable way to answer it is by looking at the source code. WebKit development is fast paced. Often the requested feature is already implemented although it has not been widely used yet. Bear in mind that sometimes the level of supports between different ports is not the same.

The following links are also useful:

I want to port WebKit to a new platform

As a starting point, first check the successful port how to page.

Granted, it's not complete, so feel free to contribute. Try to find a port similar to what you are targeting and use it as a basis, instead of writing everything from scratch. While working on your port, you may find that you wished the page had mentioned something. If so, please modify the page and add it.

How does bar work?

The best way to answer this is to use your debugger. Set a break point where you want to investigate and get a stack trace. Then, you will see which functions call your code.

Things to remember when you ask a question

Do not hesitate to fill the wiki page with new information which will help others to learn!