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HowTo use the CDT to navigate Linux kernel source

Revision as of 18:57, 10 November 2009 by Cjashfor.us.ibm.com (Talk | contribs) (New page: I've developed some steps that I've found to get the CDT to work well with the Linux kernel source. If you exclude some of these steps, it may still work to a large degree, but some things...)

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I've developed some steps that I've found to get the CDT to work well with the Linux kernel source. If you exclude some of these steps, it may still work to a large degree, but some things may not work exactly right... for example it may find the wrong include file for a C file.

Anyway, as you do these steps, I think you may understand how they assist the indexer to do a good job for the Linux kernel source.

Download and install Eclipse plus the CDT.
Configure and build your kernel. This can be done before or after downloading and installing Eclipse.
Start up Eclipse.
Click File->New->C Project
Fill in a project name like my_kernel
Uncheck the Use default location box and type in the root directory of your kernel into the Location box.
In the Project type: pane, click the Makefile project and select Empty Project
On the right side, select Linux GCC
Click Finish
Eclipse will start indexing the kernel source files, so double click on the little moving "activity" icon in the lower right part of the Eclipse window.
Click the square red stop button on the indexer.
Right click the top-level project in the Project Explorer pane on the left, and select Properties at the bottom.
Click the Manage Configurations at the top right.
Select Linux GCC (if it isn't already) then click New...
Give it a name like Linux config and a similar description, and click OK
Select your new configuration, and click Set Active and then OK
Select Resource, and then in the Text file encoding section, select Other and ISO-8859-1 in the box, then click Apply
Click on Indexer and then clear out the Files to index up-front box.
Select Use active build configuration at the bottom, and click Apply
Click on Paths and Symbols
Select the Includes tab and then select GNU C
Click Add...
Click Workspace... then select your project's {{{include}}} directory
Do another Add, Workspace and add {{{arch/}}}architecture{{{/include}}}, e.g., {{{arch/powerpc/include}}}
Click the # Symbols tab
Click Add...
Set the name to {{{__KERNEL__}}}
Set the value to {{{1}}} and click OK
Click the Source Location tab
Click the twisty for your project.
Select the Filter item and click Edit Filter...
Click Add Multiple... and then select all of the {{{arch/*}}} directories in your kernel source that will not be used (i.e. all the ones that are not for the architecture you are using)
Click OK and OK again to dismiss that dialog.
Click OK on the Properties dialog.
Right click on the project again and select Index then select Rebuild
It will take about 20 minutes or so to complete.

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