Subject: How to speed up extracting PKGNAME
To: None <firstname.lastname@example.org>
From: None <email@example.com>
Date: 06/19/2004 04:04:48
There are currently two ways to extract PKGNAME from a package
- Use 'make show-var VARNAME=PKGNAME' or equivalent
- Parse the Makefile by hand
The first is slow, particularly if you want to parse many makefiles
(for example pkg_chk); and the second, while faster, is still quite
slow and error prone (see the glorious mess that is lintpkgsrc).
Either way, we do not have a fast reliable way to extract PKGNAME.
For a single file its fine, but for a large number of packages...
it hurts, and pksgrc is not getting any smaller.
Does anyone have any ideas on how to speed things up?
PKGNAME is currently derived from DISTNAME by default. If this
was the other way around then the majority of Makefiles could
start PKGNAME=<some_fixed_string>. This would allow scripts the
option to try to 'quick extract' the PKGNAME, and then fall back
to 'make show-var VARNAME=PKGNAME'.
Of the ~5500 package Makefiles on a box here ~4700 start with
It would involve a transition phase whereby DISTNAME
could be derived from PKGNAME and PKGNAME from DISTNAME
depending on which was defined.
I see three issues
- PKGREVISION. This could be handled by just adding
nbX to the end of PKGNAME, which would be automatically
stripped off for DISTNAME. The sub issue there is
what to do if someone releases a program ending 'nb8'
- Makefiles which do strange dances setting PKGNAME
and DISTNAME based on any number of arbitrary
other variables - these would be pretty much left alone.
- The amount of effort involved in changing over.
Make it easier to generate per OS+ARCH cache file of
all packages and versions available for that OS+ARCH
combination, ideally something in the form PKGDIR
PKGNAME-VERSION, and possibly also with DEPENDS
afterwards. We probably have something that can do
this... though I'm buggered if I can find it right
David Brownlee -- firstname.lastname@example.org