Autogen failed on Cygwin

[redmanmale]

./autogen.sh failed on Cygwin when trying to build from cloned repo:

Updating build configuration files, please wait....
libtoolize: putting auxiliary files in '.'.
libtoolize: linking file './ltmain.sh'
autoreconf-2.69: libtoolize failed with exit status: 1

Maybe it's because ltmain.sh is a symlink.

Building from tarball (without autogen) works fine.

Env windows 10 x64 autoreconf 2.69 libtoolize 2.4.6 opus 1.3.1

Upd Open a copy of this in the original xiph repo: #2322.