Linked by Thom Holwerda on Wed 9th Nov 2011 21:26 UTC, submitted by edwin
General Unix Way back in 2002, MIT decided it needed to start teaching a course in operating system engineering. As part of this course, students would write an exokernel on x86, using Sixth Edition Unix (V6) and John Lions' commentary as course material. This, however, posed problems.
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RE[5]: binary for windows....
by bogomipz on Fri 11th Nov 2011 19:17 UTC in reply to "RE[4]: binary for windows.... "
bogomipz
Member since:
2005-07-11

I don't see how your system of doing the linking at update time is really any different than doing it at run time.

The difference is that the kernel is kept simple. The complexity is handled by a package manager or similar instead. No dynamic linker to exploit or carefully harden.

If you don't see any difference, it means both models should work equally well, so no reason for all the complexity.

You have to compile things different from normal static linking to keep the libs separate so they can be updated.

What do you mean by this? I'm talking about using normal static libraries, as they existed before dynamic linking, and still exist to this day. Some distros even include static libs together with shared objects in the same package (or together with headers in a -dev package).

In effect, the file is just a tar of executable and the DLLs it needs. Bit like the way resources are tagged on the end now.

I may have done a poor job of explaining properly. What I meant was that the program is delivered in a package with an object file that is not yet ready to run. This package depends on library packages, just like today, but those packages contain static rather than shared libraries. The install process then links the program.

Plus then you will need some kind of information so you know what libs it was last tar'ed up against so you know when to update it or not.

No, just the normal package manager dependency resolution.

What you really are searching for is application folders.

No, to the contrary! App folders use dynamic linking for libraries included with the application. I'm talking about using static libraries even when delivering them separately.

The system you might want to look at is: http://0install.net/

Zero-install is an alternative to package managers. My proposal could be implemented by either.

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