We are moving towards uniform x86_64 support in Windows, including x86_64-cygwin (which is likely to behave better concerning infamous "DLL rebase" problems).
Presently (e.g. in Isabelle/0b3fa8e22f22) this causes a new problem with OCaml, see also my thread on the Cygwin mailing list: https://cygwin.com/ml/cygwin/2017-10/msg00037.html $ ocaml nums.cma Cannot load required shared library dllnums. Reason: /usr/lib/ocaml/stublibs/dllnums.so: flexdll error: cannot relocate RELOC_REL32, target is too far: 0xfffffffc02c4c753 0x2c4c753. I am unsure what the situation of OCaml on Cygwin64 really is. Maybe some OCaml expert can say more about it. Makarius _______________________________________________ isabelle-dev mailing list isabelle-...@in.tum.de https://mailmanbroy.informatik.tu-muenchen.de/mailman/listinfo/isabelle-dev