Need to use some library path before /usr/lib

[Maho NAKATA]

Thanks for considertion...

> Anything else?
Simply back out for this moment, until we have some clues..

From: Gerald Pfeifer <gerald at pfeifer.com>
Subject: Need to use some library path before /usr/lib
Date: Thu, 17 Sep 2009 18:45:10 +0200 (CEST)

> Building some (Fortran) applications with lang/gcc44 it turns out we get
> weird failures upon startup which look like:
>
>   /libexec/ld-elf.so.1: /usr/lib/libstdc++.so.6: version GLIBCXX_3.4.11
>   required by ./gendoc not found
>
> What is happening here is that lang/gcc44 lays down
>   /usr/local/lib/gcc44/libstdc++.so.6
> and puts /usr/local/lib/gcc44 into USE_LDCONFIG.  Alas the system then
> finds and uses /usr/lib/libstdc++.so.6 from our aging system compiler
> instead.
>
> Now, both libraries share the same name/version because these libraries,
> like also (and especially) libgcc_s.so.1 because new versions are drop
> ins for older ones, but not the other way round.
>
> How can we address this?
>
> 	Updating the old, unsupported by upstream system compiler has
> been ruled out historically, and does not look like an option (and also
> would not help older versions of FreeBSD).
>
> 	Use -rpath, somehow, by changing the configuration of the
> lang/gcc44 ports?  That sucks in that it will break updates to newer
> versions of GCC.
>
> 	Set up ldconfig such that /usr/local/lib/gcc44 comes before
> /usr/lib?
>
+1 but I fear there can be a regression....

> Any pointers on how to best implement an ordering of search paths for ldconfig (or rpath, if that is the best of options)?

-- Nakata Maho http://accc.riken.jp/maho/ , http://ja.openoffice.org/
   Nakata Maho's PGP public keys: http://accc.riken.jp/maho/maho.pgp.txt
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