- AS_HELP_STRING([--enable-ipv6],
- [enable IPv6 protocol support]),
- if test "$enableval" = "yes"; then x_ipv6_on=yes; fi
+ AS_HELP_STRING([--disable-ipv6],
+ [disable IPv6 protocol support (autodetected by default)]),
+ [ if test "$enableval" = "no"; then
+ x_ipv6_on=no
+ else
+ AC_CHECK_FUNCS(
+ [getaddrinfo getnameinfo],,
+ AC_MSG_ERROR([required function missing for IPv6 support!])
+ )
+ fi
+ ],
+ [ AC_CHECK_FUNCS([getaddrinfo getnameinfo],, x_ipv6_on=no)
+ ]