OS14: Organizing Our OS Code

• 09 April 2022
• assembly,
• clang,
• tutorial,
• pkos

In this video, we reorganize the entire project, taking it from cluttered to modular in less than 10 minutes.

Timestamps

• 0:00 Intro, Overview
• 0:25 Running the OS
• 0:43 The Main Changes
• 1:16 Other Minor Changes
• 1:34 Lessons Learned
• 2:40 The (New!) File Tree
• 3:42 Code Diff Walkthrough
• 7:06 Outro

References

• Recursive Make Considered Harmful paper
  • Goes into detail about why you shouldn't use separate Makefiles for each submodule in your project
• GNU Make Include docs
  • Tell you how to use include in GNU Make, which we use in this video

Other Resources

• Implementing Non-Recursive Make
  • A helpful article
• boilermake
  • Seems to be a boilerplate for Make projects using include
  • Definitely too complicated for me to understand/use, but a helpful reference

Code

• Link to tag
• Diff from previous video

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  OS15: Writing a Simple VGA Driver (Bare-Metal Graphics)