From: Ricardo Wurmus <rekado@elephly.net>
To: "Ludovic Courtès" <ludo@gnu.org>
Cc: guix-devel <guix-devel@gnu.org>
Subject: Re: ‘core-updates’ is back!
Date: Tue, 05 Sep 2017 15:21:46 +0200 [thread overview]
Message-ID: <87h8whuvpx.fsf@elephly.net> (raw)
In-Reply-To: <87lgm14btg.fsf@gnu.org>
Andy wrote:
> It would be pretty cool if we could fix our O(n^2) problems in search
> paths in this core-updates -- basically whenever you go to create an
> environment, instead of making e.g. VAR=A:B:C:..., for all VARs
> (LIBRARY_PATH, PKG_CONFIG_PATH, etc), instead we make a union directory
> Z containing the union of A, B, C, etc and set VAR=Z. The goal would be
> to fix quadratic run-time lookup costs by replacing it with a
> compile-time computation. This applies to many lookups: PATH, -rpath,
> etc.
Ludo wrote:
> A possible alternative solution for ld.so is at
> <https://bugs.gnu.org/26048>.
Do you know of any negative side effects this would have? For example,
would it not become impossible to override libraries at runtime with
LD_LIBRARY_PATH or LD_PRELOAD when “-lfoo” is replaced by the absolute
file name of the “foo” library?
--
Ricardo
GPG: BCA6 89B6 3655 3801 C3C6 2150 197A 5888 235F ACAC
https://elephly.net
next prev parent reply other threads:[~2017-09-05 13:22 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-08-28 22:01 ‘core-updates’ is back! Ludovic Courtès
2017-08-29 8:44 ` Efraim Flashner
2017-08-30 9:30 ` Efraim Flashner
2017-08-30 19:10 ` Marius Bakke
2017-08-30 20:16 ` Efraim Flashner
2017-08-30 20:37 ` Marius Bakke
2017-08-31 14:44 ` Ludovic Courtès
2017-08-31 16:23 ` Marius Bakke
2017-08-31 17:18 ` Marius Bakke
2017-09-02 11:18 ` Marius Bakke
2017-09-02 21:01 ` Ludovic Courtès
2017-08-30 21:17 ` Ricardo Wurmus
2017-08-30 21:51 ` Marius Bakke
2017-08-29 9:14 ` Andy Wingo
2017-08-29 10:01 ` Ricardo Wurmus
2017-08-29 13:36 ` 宋文武
2017-08-30 9:58 ` Ludovic Courtès
2017-08-30 9:58 ` Ludovic Courtès
2017-09-05 13:21 ` Ricardo Wurmus [this message]
2017-09-05 14:57 ` bug#26048: " Ludovic Courtès
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