[PD-dev] dlopen error _class_addlist

Dan Wilcox danomatika at gmail.com
Sun Jun 13 08:45:08 CEST 2021

In the end, I didn't have the time to find a deep fix and instead resorted to compiling the external sources into the application. Thankfully, everything is working and I can make the release.

When I revisit building Pd for native Apple arm64, I imagine this issue will need to be fixed for general dynamic external usage.

> On Jun 10, 2021, at 1:48 AM, Dan Wilcox <danomatika at gmail.com> wrote:
> More likely that my additions to pd-lib-builder form arm64 are incomplete. I’m just sure where to start debugging.
> enohp ym morf tnes
> -----------
> Dan Wilcox
> danomatika.com
> robotcowboy.com
>> On Jun 10, 2021, at 12:11 AM, Miller Puckette <msp at ucsd.edu> wrote:
>> Hmm... I think if there are 100s of undefined symbols the extern loader
>> in Pd only reports one of them (seemingly choosing one at random).  So this
>> is probably a failure of dlopen to see any symbols from the calling pd at
>> all.
>> But why this should happen for arm and not for intel arch escapes me...
>> perhaps Mac has added some more hurdles to dynamically loading code, but
>> only turned them on for arm?
>> M
>>> On Wed, Jun 09, 2021 at 11:57:47PM +0200, Dan Wilcox wrote:
>>> Howdy all,
>>> I'm building an application which uses libpd and a couple pre-compiled externals as universal macOS app for x86_64 and arm64 (new Apple CPU). So far, building and signing etc is working but now I'm running into an issue when the externals are being loaded on arm64:
>>> Pd: error:../pd/zirkhoa.d_fat: dlopen(.../pd/zirkhoa.d_fat, 10): Symbol not found: _class_addlist
>>> Referenced from:.../pd/zirkhoa.d_fat
>>> Expected in: flat namespace
>>> in .../pd/zirkhoa.d_fat
>>> None of the external sources use class_addlist, so I assume that's something internal? Could this be an issue with the new architecture within libpd / the pd core?
>>> The x86_64 builds run fine on Intel machines.
>>> --------
>>> Dan Wilcox
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>> -- 

Dan Wilcox
@danomatika <http://twitter.com/danomatika>
danomatika.com <http://danomatika.com/>
robotcowboy.com <http://robotcowboy.com/>

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