Currently, PowerPC64 ELFv2 pcre1 is crashing in the JIT code due to a misdetection of all PPC64 big endian as ELFv1.
Patch is submitted upstream as https://bugs.exim.org/show_bug.cgi?id=2353
The patch has been accepted upstream.
These patches no longer apply after the new version was updated by r495582. It appears that they are now OBE. So, this DR may now be closed.