UTF-8 support was requested, but insufficient UTF-8 support was detected

Hello,


I am trying to get the Nano version 2.7.5 on my Ubuntu 16.10 computer. Because I could not find a package I tried to compile it myself. But if I run
./configure --enable-utf8
I get the following error Message:

configure: error: 
*** UTF-8 support was requested, but insufficient UTF-8 support was
*** detected in your curses and/or C libraries.  Please verify that your
*** slang was built with UTF-8 support or your curses was built with
*** wide character support, and that your C library was built with wide
*** character support.

Well, I have installed libncurses5-dev and libslang2-dev but I don't know how to check for wide character support / UTF-8 support. Can someone please help?


Regards
Leonhard