The Issue [Nevermind, Fixed]

Nevermind, in the process of writing this post, I made a change at some point that made everything work all honky-dory.

build.py in pcs-0.5 and pypcap both use the following command to link everything:

/usr/bin/gcc-4.0 -L/opt/local/lib -bundle -undefined dynamic_lookup build/temp.macosx-10.5-i386-2.6/pcs/pcap/pcap.o build/temp.macosx-10.5-i386-2.6/pcs/pcap/pcap_ex.o -L/usr/lib -lpcap -o build/lib.macosx-10.5-i386-2.6/pcs/pcap.so

build.py in tcpregression links it with...

/usr/bin/gcc-4.0 -L/opt/local/lib -bundle -undefined dynamic_lookup build/temp.macosx-10.5-i386-2.6/src/pcs/pcap/pcap.o build/temp.macosx-10.5-i386-2.6/src/pcs/pcap/pcap_ex.o -o build/lib.macosx-10.5-i386-2.6/pcs/pcap.so

The discrepancy between the two being:

-L/usr/lib -lpcap

Exactly why this is the case, I'm unsure. Obviously, if pcap.so isn't linked with libpcap (the actual pcap library), there would be issues.

The build system uses setup.py from pcs-0.5, with a modification to include the different source directory. Here's the diff between pcs' setup.py and my "pcssetup.py". All of the changes have to do with the source being in a "src" folder.

< pcap_cache = 'src/pcs/pcap/config.pkl'
---
> pcap_cache = 'pcs/pcap/config.pkl'
71c71
<         f = open( 'src/pcs/pcap/config.h', 'w' )
---
>         f = open( 'pcs/pcap/config.h', 'w' )
122c122
<                  sources = [ 'src/pcs/pcap/pcap.pyx', 'src/pcs/pcap/pcap_ex.c' ],
---
>                  sources = [ 'pcs/pcap/pcap.pyx', 'pcs/pcap/pcap_ex.c' ],
129a130,140
> 
> setup( name = 'pcs',
>       version = '0.5',
>       description = 'Packet Construction Set',
>       author = 'George V. Neville-Neil',
>       author_email = 'gnn@neville-neil.com',
>       url = 'http://pcs.sf.net',
>       packages = ['pcs', 'pcs.packets'],
>       cmdclass = pcap_cmds,
>       ext_modules = [ pcap ],
>       )

And then the actual setup file....

from distutils.core import setup, Extension
import pcssetup
setup( name = 'tcpregression',
version = '1.0',
description = 'FreeBSD TCP Regression Suite',
author = 'Zach Riggle',
author_email = 'zjriggl@freebsd.org',
url = 'http://freebsd.org',
packages = ['tcpregression',
'tcpregression.pcsextension',
'tcpregression.tests',
'pcs',
'pcs.packets'],
package_dir = {'':'src'},
cmdclass = pcssetup.pcap_cmds,
ext_modules = [pcssetup.pcap],
)

As you can see, not too many changes.

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