Compiling iptables against dietlibc

Hi,

I'm failing to compile iptables against dietlibc.
I get multiple errors do to conflicting types. Extract
of errors:

In file included from
extensions/libipt_CLASSIFY.c:10:../linux-2.4.34/include/linux/types.h:20:
error: conflicting types for ‘fd_set’
/home/tmueller/cvs/diet-router/tool/include/sys/select.h:19: error: previous dec
laration of ‘fd_set’ was here

... and so on :--(

Last time I was successfull was while i used a debian etch
system. I don't remember any change in my patches, so
I suggest a difference in the gcc (pre-)compiler. Current
debian lenny version is 4.3.2 while debian etch uses 4.1.1.

Is my suggestion right or does any one can give me a hint?

If I'm right, is the an other hint than buldin an own
compiling environment wich uses an "old" version of gcc?

Greetings,
Thomas