problem with gist index amdb utility

Hello all,

With New Year !

I realized my own gist index, and now I want to debug it :) I want to use
amdb program
http://gist.cs.berkeley.edu/libgist-2.0/install.html
But I have problem with installing it.
When I running "gmake cmdline"
It doesn't find iostream.h file :( and uses g++ (it is c++ compiler)).
But I know that c++ compiler uses iostream files, and the are on my paths.
Where can I get iosteam.h file ?

Best regards,
Sergej Galkin