Totally without any knowledge in this subject, I
will assume that `make install` did what makes
sense, which is to copy the header files somewhere
into /usr/include, probably off of a subdirectory.
Unless their `make install` script is broken, you
shouldn't have had to copy any header files anywhere.
If any of the above is correct, you are probably
not including the proper path for the libpcap
libraries. Perhaps instead of "#include <pcap.h>"
it should be "#include <pcap/pcap.h>" or something.
Again, take this all with a large helping of salt.
Look at your system to verify. In particular,
do `ls -l /usr/include | grep "^d"` and see if
there is anything which looks libpcap-related, or
if updatedb has been run since when you installed
the system, do `locate pcap | grep lib` for a
broader search of your system.
Hope this helps.
~Patrick
