#12 Compilation fails in polyx.h

[cyberplaque]

The Compilation fails while compiling with the make command. it tells me just that something in line 72 of polyx.h is wrong the exact text is:

In file included from bezierarith.h:39,
from bezierarith.cc:44:
polyx.h:29:22: error: iostream.h: Datei oder Verzeichnis nicht gefunden
In file included from bezierarith.h:39,
from bezierarith.cc:44:
polyx.h:72: error: expected constructor, destructor, or type conversion before ‘&’ token
make[1]: *** [bezierarith.o] Fehler 1
make[1]: Leaving directory `/home/cyberplaque/Desktop/mathe/surf/surf-1.0.4/yaccsrc'
make: *** [all-recursive] Fehler 1

hope somebody can. I added the output in a txt of both ./configure and the make command to the message