[flow-tools] compile problem with 0.56

[Greg.Volk@edwardjones.com]

I'm trying to compile flow-tools v0.56 on a slackware7
box. I previously compiled v0.54 and didn't have any 
trouble, and the INSTALL file for v0.56 didn't call 
out any new depedancies.

I do have an older version of gmake - v3.77 - while 3.79.1
is listed in INSTALL, but I don't think this is the problem.

configure runs without complaint, and then the folllowing
is my make output:

bash-2.03# make
make  all-recursive
make[1]: Entering directory `/tmp/flow-tools-0.56'
Making all in lib
make[2]: Entering directory `/tmp/flow-tools-0.56/lib'
gcc -DHAVE_CONFIG_H -I. -I. -I..     -g -Wall -c ftio.c
In file included from ftio.c:56:
ftlib.h:395: field `pktinfo' has incomplete type
make[2]: *** [ftio.o] Error 1
make[2]: Leaving directory `/tmp/flow-tools-0.56/lib'
make[1]: *** [all-recursive] Error 1
make[1]: Leaving directory `/tmp/flow-tools-0.56'
make: *** [all-recursive-am] Error 2
bash-2.03#


I've looked at the struct code in ftlib.h and it looks
correct but I'll admit it's been quite sometime since 
I've written any C/C++ code.

Any ideas?

Thanks