Apache segmentation fault with SP 3.2.3 when calling PHP functions on Mac OS Big Sur?

[Peter Schober]

* Lukas Hämmerle <lukas.haemmerle at switch.ch> [2021-07-21 08:28]:
> After upgrading to Big Sur (Mac OS 11) I also had to upgrade the Mac Ports
> and the shibboleth SP. Things seemed to work fine at first but I stumbled
> upon a strange problem that seems somehow to be affected to the Shibboleth
> SP. Whenever calling some PHP script that contains code using some external
> library (in my particular case it was php-curl)

Is this with mod_php? If so does it work when using PHP FPM / FCGI
(keeping PHP and its libraries out of the Apache process space)?

-peter