On Tue, 24 Feb 2009, Joerg Sonnenberger wrote:
On Tue, Feb 24, 2009 at 06:49:46PM +0100, Hubert Feyrer wrote:Not knowing what you've straced there, reading the same file 12000 times sounds insane.bsd.(fast.)prefs.mk is included all over the place. The fast version exists simply to not have to check for the include guards all over the place, but still minimize parse time. It is 8 lines long, including 5 lines of unparsed noise. So it adds only a few system calls, but otherwise doesn't contribute to parse time.
Is there any sense in extending make for this? Have it
track every included path and have a '.includeonce' or similar
directive which will not include a file if its already been
included. We could then cleanup all the
"if ! FOO, set FOO, do stuff, endif" logic
Is there prior art for this?
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