Marco Atzeri <marco(dot)atzeri(at)gmail(dot)com> writes:
> Building on Cygwin latest 10 beta1 or head sourece,
> make check fails as:
> ...
> performing post-bootstrap initialization ... 2017-05-31 23:23:22.214
> CEST [16860] FATAL: collation "ja_JP" for encoding "EUC_JP" already exists
Hmph. Could we see the results of "locale -a | grep ja_JP" ?
regards, tom lane