Re: ‘core-updates’ is back!

[Ricardo Wurmus]

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

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