Try running "sudo ldconfig" and see if that resolves it. If not, do a sanity check by copying libfann.so.2.2.0 to the fann directory and make a libfann.so.2 symlink to it there. It's a temporary hack, but if you do that it really should load properly in Pd. If even that doesn't work, I'm stumped!

On Mon, Apr 11, 2022 at 2:19 PM Alexandros <adrcki@gmail.com> wrote:

Yes, it's from the latest version of your repo. I did a "make clean" and a new "make" and still get the same. It's very strange. In the Makefile the /usr/local/lib path is specified, but Pd keeps on complaining.

Don't know if this is of any relevance, but "file /usr/local/lib/libfann.so.2" says that this is a symbolic link to /usr/local/lib/libfann.so.2.2.0, which in turn is an ELF 64-bit LSB shared object.

On 11/4/22 20:36, William Brent wrote:
Just to confirm, did you pull my latest change to the repo with a new Makefile, do a "make clean", and then a new "make"?



On Mon, Apr 11, 2022, 12:06 PM Alexandros <adrcki@gmail.com> wrote:

Still no dice. Everything seems to be in /usr/local/lib. This is the output of "ls /usr/local/lib/*fann*

/usr/local/lib/libdoublefann.a
/usr/local/lib/libdoublefann.so.2.2.0
/usr/local/lib/libfann.so.2
/usr/local/lib/libfixedfann.so
/usr/local/lib/libfloatfann.a
/usr/local/lib/libfloatfann.so.2.2.0

/usr/local/lib/libdoublefann.so
/usr/local/lib/libfann.a
/usr/local/lib/libfann.so.2.2.0
/usr/local/lib/libfixedfann.so.2
/usr/local/lib/libfloatfann.so
/usr/local/lib/libdoublefann.so.2
/usr/local/lib/libfann.so
/usr/local/lib/libfixedfann.a
/usr/local/lib/libfixedfann.so.2.2.0  
/usr/local/lib/libfloatfann.so.2

I did "make fann_static" in fann's directory which gave this output "
[100%] Built target fann_static" and then "sudo make install" and then "make" in pd_fann directory, but I keep on getting the same error message when trying to load the object in Pd. My system is UbuntuStudio 21.10 with Pd-0.52.2 compiled from source.

On 11/4/22 17:49, William Brent wrote:
Ok - I just updated the repo so the project is using pd-lib-builder. I'm on my Ubuntu 20.04.4 LTS machine now and the [fann] external builds and loads fine for me. When building the actual FANN library, make sure to build it as static with "make fann_static". Then do "make install" so the lib and headers get to /usr/local. After that, you should be able to build the Pd [fann] external with just "make".


On Mon, Apr 11, 2022 at 10:17 AM Alexandros <adrcki@gmail.com> wrote:

I managed to build it on Linux but again can't load it, getting this error:

/home/alexandros/Documents/Pd/externals/pd_fann/fann.pd_linux: libfann.so.2: cannot open shared object file: No such file or directory

even though there is a libfann.so.2 file in /usr/local/lib, as I have built FANN 2.2.0. Is there something I need to change in the source?

On 11/4/22 16:39, William Brent wrote:
I got into this a few years ago and updated/extended the [ann_mlp] object. Here's the repo: https://github.com/wbrent/pd_fann. I just tried building it against the latest version of FANN (2.2.0) and it still appears to work fine. I need to update the project to use pd-lib-builder, but the included Makefile works for x86_64 builds on Mac.

On Mon, Apr 11, 2022 at 8:34 AM Dan Wilcox <danomatika@gmail.com> wrote:
I could be wrong, but I don't believe anyone has taken over maintenance of [ann]. The original sources are still in the SVN export to git.puredata.info:


If there is interest, we could push this to the pd-externals group on GitHub, add pd-lib-builder support, then someone can take over maintenance. You perhaps? :)

On Apr 11, 2022, at 9:48 AM, pd-list-request@lists.iem.at wrote:

Message: 2
Date: Mon, 11 Apr 2022 09:38:51 +0300
From: Alexandros <adrcki@gmail.com>
To: Pd-List <pd-list@lists.iem.at>
Subject: [PD] Ann external source or 64-bit build?
Message-ID: <92b19048-4b59-2270-9880-f3554d9185f3@gmail.com>
Content-Type: text/plain; charset=UTF-8; format=flowed

I run into [ann] in Pd's website 
(http://puredata.info/Members/dmorelli/ann/ann/) from the Fann homepage 
and downloaded the Linux version, but it's a 32-bit build and Pd can't 
load it. I can't find it in deken. Anyone (IOhannes maybe, since you 
have provided the Linux build) has the source code so I can try to 
compile (any compilation instructions would be great too).

Thanks,
Alexandros


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