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To: gentoo-devhelp@g.o
From: Thomas Kahle <tom111@...>
Subject: preserved libs
Date: Mon, 04 May 2009 10:32:06 +0200

I am experimenting with the preserved libs feature of the latest portage.
I have an ebuild (sci-mathematics/Macaulay2 in the science overlay)
which builds a program depending on library
Now A gets updated to but preserve libs is enabled, so portage
keeps a copy of and fills the set @preserved-rebuild.
Running emerge @preserved-rebuild rebuilds the package, but for some
reason the package again builds against, since configure checks
for the presence of
After this rebuild will be removed and the program does not start.
Rebuilding it a second time, makes the cycle complete since now the only
version available is and everything is linked correctly.

So, where is the flaw?

Upstreams configure not finding the latest version ?
The ebuild ?
portage ?


Thomas Kahle

The fundamental theorem of algebra is open source. Like any other
mathematical theorem it can be applied free of charge and everybody
has access to its proof and can convince himself how it works. Why
should software be any different?

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Re: preserved libs
-- Peter Volkov
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Updated Jun 17, 2009

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