Re: State of the new config & build system
Larry McVoy (lm@bitmover.com)
Thu, 27 Dec 2001 18:01:48 -0800
> Unlike the broken make dep, kbuild 2.5 extracts accurate dependencies
> by using the -MD option of cpp and post processing the cpp list. The
> post processing code is slow because the current design requires every
> compile to read a complete list of all the files, giving O(n^2)
> effects. Mark 2 of the core code will use a shared database with
> concurrent update so post processing is limited to looking up just the
> required files, instead of reading the complete list every time.
Ah, OK, I get it. Hey, would it help to have a dbm interface compat
library which uses mmap instead of building the db in brk() space?
We've got a small, fast one that you can have under any license you
like, GPL, LGPL, whatever. We use it all over the BK code.
--
---
Larry McVoy lm at bitmover.com http://www.bitmover.com/lm
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/