From Stoned.Elipot@script.jussieu.fr Thu Jul 19 12:42:33 2001
Date: Wed, 18 Jul 2001 00:30:00 +0200
From: Stoned Elipot <Stoned.Elipot@script.jussieu.fr>
To: cyrus-bugs@andrew.cmu.edu
Subject: Re: question/suggestion regarding libtool usage in cyrus-sasl lib 

On Mon, 16 Jul 2001 12:33:17 -0400 (EDT)  Rob Siemborski wrote:
> On Mon, 16 Jul 2001, Stoned Elipot wrote:
> 
> > handling of `_' in symbol names. I had made crude patches on cyrus-sasl-1.5
.24
> > which use the libtool installed .la files to get the right shared object to
> > dlopen() and I'm considering using LTDL API to get extra portability withou
t
> > too much trouble. Would you be interested in theses ?
> 
> I would be interested in seeing them, and possibly include (similar)
> patches in/with SASLv2.

Hi,
I had made a couple of patches to implement the usage of GNU libltdl in
cyrus-sasl-1.5.24. They can be found at :
ftp://ftp.pbox.org/pub/cyrus-sasl-1.5.24-ltdl.patches.gz

These patches bring :

- libtool linking of libsasl.* with libtldl

- Enabling or not the use of the included libtldl with --enable-ltdl-install
argument to configure (that's standard libtool integration, see libtool's 
manual)

- lib/dlopen.c simplification and portability improvement (IMHO) by using
ltdl API (no more hack for `_' symbols prefixing, let libtool figure out
the shared lib naming convention)

*Not* included in these patches :

- (new) subdirectory 'libltdl' which should contains the GNU libltdl in
case the target system does not already have libtool installed. This
directory can be created by libtoolize --ltdl and then the
required and missing files for autoconf in there should be added (install-sh
and all; I didn't find a way to use those in ../config :( ).
See 'Distributing libltdl' in libtool's manual.

- config/<libtool scripts,support files> : I found myself updating libtool 
scripts in config/ and so new files add to be added there for supporting latest
version of it.

- update of config/config.{guess,sub} : during testing on old netbsd systems I
came across the need to use more uptodate (how strange) version of these files.
I grabbed those available at ftp.gnu.org/pub/gnu/config

- Makefile.in, aclocal.m4 and configure which of course have to be rebuild
as my patches touch some of their sources files

(So theses previous point regards files that can be generated/added/updated by
auto* tools so I didn't put them in the above mentionned patches)

- the thread-safe issue is not resolved: I'm not a thread expert, please see
the comments I added in the patched lib/common.c:sasl_set_mutex()

Anyway, this allowed me to compile and test (just by cheking that saslpasswd
is picking the plugins shared libs and produce good result as far as I can see)
the whole thing on Solaris8/sparc, HPUX11, HPUX10.20 and NetBSD/sparc 1.2.1 
(a.out) and 1.5.1 (elf). So I guess
I had the opportunity to test various shared libs handling/convention/...

Hoping this can help. Best regards, Stoned.