2012.04.05 02:15

eclipse로 linux 소스 보기

얼마전에 linux kernel분석 세미나에 참여하겠다고 의사를 표현했다.


새로운 시작이란 생각도 들고해서 eclipse로 linux kernel 소스를 보는 방법을 찾다보니, 

아래와 같이 잘 정리된 것을 찾을 수 있었다.


세상은 참 넓다. 

그래고 배울 것도 많다.


배우는 것과 생각하는 것을 함께 가야겠다는 것이 더 느껴지는 밤이다.


http://wiki.eclipse.org/HowTo_use_the_CDT_to_navigate_Linux_kernel_source

HowTo use the CDT to navigate Linux kernel source

Here are 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.

Disclaimer: these steps were developed for Eclipse 3.5.1 + CDT 6.0.0.

  1. Download and install Eclipse plus the CDT.
  2. Configure and build your kernel to define CONFIG_* and generate autoconf.h. This can be done before or after downloading and installing Eclipse.
  3. Ensure that you have the right kernel source (e.g. make sure you are on the right git branch). If you check out another branch later, that's ok, but you will need to re-index the source, and that takes about 20 minutes.
  4. Start up Eclipse.
  5. Click File->New->C Project
  6. Fill in a project name like my_kernel
  7. Uncheck the Use default location box and type in the root directory of your kernel into the Locationbox.
  8. In the Project type: pane, click the Makefile project and select Empty Project
  9. On the right side, select Linux GCC
  10. Click Advanced settings... and a Properties dialog will pop up.
  11. Select Resource on the left, and then in the Text file encoding section, select Other and ISO-8859-1 in the box, then click Apply
  12. Select C/C++ Build on the left.
  13. Click on Discovery Options
  14. At the bottom of the screen where it says Compiler invocation arguments, insert "-include include/generated/autoconf.h" at the beginning of that line. Also insert any other compiler options you may need that are not the default, such as "-m64" (Note: for older kernels [pre-2.6.36?], the location of autoconf.h is include/linux/autoconf.h)
  15. You may also need to change the compiler command from gcc to whatever compiler you are using (e.g. you are using a cross compiler).
  16. Open the C/C++ General selection on the left.
  17. Click on Indexer
  18. Checkmark the Enable project specific setttings box.
  19. Uncheck Index source files not included in the build
  20. Clear out the Files to index up-front box.
  21. Click on Paths and Symbols on the left.
  22. Select the Includes tab and then select GNU C
  23. Click Add...
  24. Click Workspace... then select your kernel's include directory
  25. Do another Add, Workspace and add arch/architecture/include, e.g., arch/powerpc/include
  26. Click the # Symbols tab
  27. Click Add...
  28. Set the name to __KERNEL__
  29. Set the value to 1 and click OK
  30. Click the Source Location tab
  31. Click the twisty for your project.
  32. Select the Filter item and click Edit Filter...
  33. 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)
  34. Click OK and OK again to dismiss that dialog.
  35. Click OK on the Properties dialog.
  36. Click Finish on the C Project dialog.
  37. Right click on the project and select Index then select Rebuild
  38. It will take about 20 minutes or so to complete.

Note 1: If you change any of your CONFIG_* settings, in order for Eclipse to recognize those changes, you must do a "build" from within Eclipse. Note, this does not mean to re-build the index; this means to build the kernel, by having Eclipse invoke make (this is normally bound to the Ctrl-B key in Eclipse). Only after a build operation, will Eclipse regenerate the compilation #defines it uses when analyzing the source during indexing and editing.

Note 2: The background color of "Quick Context View" will be dark if the Ambiance theme in Ubuntu is selected.

Corey Ashford cjashfor@us.ibm.com

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