Hello, It seems that debhelper is somewhat buggy, since it tries to build ocaml-native-compilers even on arches that do not support it, resulting in ocaml failing to build on those.
I have filled a bug report about this and will follow up with this, so don't worry if your packages do not build on non native arches. I will try to make a roundup of the situation tomorrow or tuesday. Friendly, Sven Luther
