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Date: Wed, 20 Feb 2013 15:02:54 +1100
From: "Daniel O'Callaghan" <danny@clari.net.au>
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Subject: amd64 and COMPAT_AOUT
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I'm migrating a lot of services to a new server running 9.1 amd64.
I have a VMWare FreeBSD 3.3 server I want to decommission, which is 
running a client's website with a shopping cart system in an a.out 
binary (source code lost long ago).

I have just tried to build a new kernel on the 9.1/amd64 machine with 
COMPAT_AOUT added to /usr/src/sys/amd64/conf/NEWKERNEL but ...

root@corella:/usr/src/sys/amd64/conf # config NEWKERNEL
NEWKERNEL: unknown option "COMPAT_AOUT"

COMPAT_AOUT is recognised in i386/conf

The funny thing is that in amd64/conf/NOTES is
device          gzip            #Exec gzipped a.out's.  REQUIRES 
COMPAT_AOUT!

Is it possible to get 9.1/amd64 to run i386 a.out binaries?
What might I be missing?

Thanks,

Danny