Howto force i386 build on Snow Leopard / macports 1.8.2

[Michael Hieb]

Can anyone give some guidance as to how to force macports to build openvpn 
i386 executable only (and not x86_64) under Snow Leopard / macports 1.8.2 
as this appears the only way to get the macport of openvpn to work at 
present.

Details below and apologies for the duplicate post but I thought it may be 
helpful if the subject contained the primary question I need help with.

Regards...


---------- Forwarded message ----------
Date: Sat, 30 Jan 2010 10:54:06 +0000
From: Michael Hieb <michael.hieb at celoso.net>
To:  <macports-users at lists.macosforge.org>
Subject: Installing OPENVPN2 as i386 on Snow Leopard

Apologies if this is covered in the documentation or archives. I've looked and
not found the clue I need.

Problem: openvpn2 (@2.1.1.1) installed as default or universal on snow leopard
has a bug in which it is unable to detect the default gateway and consequently
cannot set up the proper routing tables. This was covered in a ticket from last
year.

http://trac.macports.org/ticket/22689

To my knowledge no progress on the macport, though there is a patch apparently
submitted to openvpn for linux and windows.

http://openvpn.net/archive/openvpn-devel/2006-07/msg00003.html

The macport ticket reports that if openvpn2 is installed as an i386 executable
that the bug can be circumvented. The problem is that I haven't been able to
figure out how to build openvpn2 as an i386 executable. Preferably I'd like to
change the settings only for openvpn2 and not the entire macports installation.

I have tried to date setting the configure.cflags-append in the openvpn2
portfile. e.g.

configure.cflags-append = "-arch i386"

and find the executable fails to build with multiple architectures (i386 and
x86_64)

I also tried to use a build_arch directive in the portfile but that is
apparently not the correct place to use this directive.

Apologies if I have overlooked the obvious and thanks for any clue provided.

Michael