In 7.51.0 and later, the actual configure script option for libidn2
is still "--with-libidn", but the help text refers to "--with-libidn2".
Here's the configure.ac snippet:

AC_ARG_WITH(libidn,
AC_HELP_STRING([--with-libidn2=PATH],[Enable libidn2 usage])
AC_HELP_STRING([--without-libidn2],[Disable libidn2 usage]),

This can be fixed either way, but the inconsistency is confusing.

-- 
Christian "naddy" Weisgerber                          naddy_at_mips.inka.de
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