Version 1.60.4 is not depends on libstdc++6 (>= 4.4.0) http://packages.debian.org/squeeze/wvdial.
How to compile it for Maemo?
I'm on a different computer Debian Wheezy. Unpack there the tar.gz?
several options when wanting to cross-compile.
Scratchbox being one.
For starters, you need it installed as described here on wiki pages, and on Nokia devsite http://developer.nokia.com/Community..._for_beginners
You can also try to download and install the version 1.60 from Debian, use armel version, together with the mentioned depndent libraries to install also.
Well, it is possible to get the debian binaries working. but, it is quite broken. And it will complain a lot afterwards. If you licate the armel binaries, install them, and manually create symlinks to ssl libraries (v1).