About tcpdump src files...

["Denis Morejon Lopez" <denis () cfg tel etecsa cu>]

Friends:
I am trying to configure a tool called ttt with the following statement:
 ./configure --with-pcap=/usr/include/pcap --with-tcpdump=(Here the tcpdump src path)

Although i have already set several paths to tcpdump src files, that configure returns:
> Checking for tcpdump/linux-include
>  linux requires tcpdump source

In fact when i read the README file it says "ttt uses linux-include in the tcpdump source". But no linux-include file 
exists neither into a tcpdump folder nor any other.

My tcpdump at least run and catch some packets.

So i do not know if i downloaded the correct source files. Firstly, i downloaded tcpdump-3.6.2-11.7.2.0.src.rpm, and i 
ran it. But no linux-include was found. Finally, someone told me that i should dowmload tcpdump-3.6.2.tar.gz, so i did 
it. I extract it but no linux-include file there. 
What should i do, please?