Comment # 2 on bug 1023847 from Aurelien Aptel

You can also enforce the ncurses config tool with a env var. I've added this at
the top of the %build step of samba.spec:

    if command -v ncurses6-config &> /dev/null; then
        export NCURSES_CONFIG="$(command -v ncurses6-config)"
    fi

https://build.opensuse.org/package/show/home:aaptel:samba-ncurses6/samba

If this works fine I'll commit it to the svn.