Hi, thanks for the bug report.
the patch simply deactivated using quadmath on ppc64el. Of course this fixes the issue, but is far from optimal. My assumption is the fix of #111403 [1] will also fix this. Would you please try rebuilding the package on ppc64el once libdune-common version dune-common 2.10.0-5 is available and report back? Best, Markus [1] <https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1114003>
