[pm215@gcc1-power7 all]$ ../../configure ERROR: User requested feature nettle configure was not able to find it. Install nettle devel
...but as you can see I didn't ask for nettle explicitly at all, so configure should fall back to disabling it, not exiting with an error. configure --disable-gnutls seems to work around this. I think what is happening is that the logic to check for gnutls is deciding that gnutls exists and so it can set the feature to yes, but is failing to fall back to "actually, no" if the user didn't explicitly require gnutls and gnutls needs nettle and nettle isn't installed. thanks -- PMM