1If you have trouble, try this suggestion from Peter Waltenberg:
2
3>> From peterw@dascom.com Mon Jul 13 22:32 EST 1998
4>> X-Priority: 3 (Normal)
5>> Date: Tue, 14 Jul 1998 08:31:57 +1000 (EST)
6>> Reply-To: peterw@dascom.com
7>> Organization: DASCOM
8>> Sender: peterw@mulga.surf.dascom.com
9>> From: Peter Waltenberg <peterw@dascom.com>
10>> To: Shawn Ostermann <sdo@picard.cs.ohiou.edu>
11>> Subject: Re: tcptrace
12>>
13>> On Linux with glibc-2 it needs
14>>
15>> DEFINES += -D_BSD_SOURCE
16>>
17>> to build properly.
18>>
19>> It's simply a matter of which "style" of tcphdr struct naming is
20>> pulled in from the include files.
21>>
22>> From memory the "-D_BSD_SOURCE" is safe for older Linux setups as
23>> well, however I can't test it.
24>>
25>> Peter
26