GNU bug report logs - #12319
libltdl does not skip bad libs

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Package: libtool; Reported by: Pierre Ossman <ossman@HIDDEN>; dated Fri, 31 Aug 2012 16:26:03 UTC; Maintainer for libtool is bug-libtool@HIDDEN.

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Date: Fri, 31 Aug 2012 13:30:46 +0200
From: Pierre Ossman <ossman@HIDDEN>
To: bug-libtool@HIDDEN
Subject: libltdl does not skip bad libs
Message-ID: <20120831133046.67b8464f@HIDDEN>
Organization: Cendio AB
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I've unfortunately stumbled upon a key difference in behaviour between
dlopen() and lt_dlopen(). When dlopen() encounters a bad library (e.g.
wrong arch), it will just continue on and find another library.
lt_dlopen() however, will stop on the first library which it can read.

This breaks libltdl applications horribly in multi-arch environments.
As LD_LIBRARY_PATH is not arch specific, having a universal one means
having one like:

	LD_LIBRARY_PATH=3D/usr/foo/lib32:/usr/foo/lib64

This works fine with dlopen(), but not with lt_dlopen().

The fix seems simple enough. In find_handle_callback(), change:

	*phandle =3D 0;

to:

	return 0;

Rgds
--=20
Pierre Ossman            OpenSource-based Thin Client Technology
System Developer         Telephone: +46-13-21 46 00
Cendio AB                Web: http://www.cendio.com

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Acknowledgement sent to Pierre Ossman <ossman@HIDDEN>:
New bug report received and forwarded. Copy sent to bug-libtool@HIDDEN. Full text available.
Report forwarded to bug-libtool@HIDDEN:
bug#12319; Package libtool. Full text available.
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