postgresql-pllua fails on s390x
postgresql-pllua currently fails to build on s390x:
/usr/bin/clang -Wno-ignored-attributes -fno-strict-aliasing -fwrapv -O2 -I/usr/include/lua5.3 -I. -I./ -I/usr/include/postgresql/server -I/usr/include/postgresql/internal -O2 -fomit-frame-pointer -D_GNU_SOURCE -I/usr/include/libxml2 -flto=thin -emit-llvm -c -o src/error.bc src/error.c
src/error.c:1279:10: fatal error: 'plerrcodes.h' file not found
#include "plerrcodes.h"
^~~~~~~~~~~~~~
I've tried to reproduce it, but in a docker container on s390x it just works (though I had to add clang-dev / llvm9-dev to makedepends for some reason).