mingw-w64-ocaml - 4.04.0 - Update to latest versiont mingw-w64-ocaml-findlib - 1.7.1 - Update to latest version and fix issue with invalid path in etc/findlib.conf. You must use DOS pathes here but the build process was creating those for the build system, not the target system. On the target system, we use cygpath to fixup the config with the *.install files. Yuk.