port-cobalt/47199: Libffi 3.0.11 fails to compile on NetBSD 5.1.2

[glynastill%yahoo.co.uk@localhost]

>Number:         47199
>Category:       port-cobalt
>Synopsis:       Libffi 3.0.11 fails to compile on NetBSD 5.1.2
>Confidential:   no
>Severity:       non-critical
>Priority:       medium
>Responsible:    port-cobalt-maintainer
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Fri Nov 16 12:35:01 +0000 2012
>Originator:     Glyn Astill
>Release:        5.1.2 cobalt generic
>Organization:
see tickets
>Environment:
NetBSD bsd.8kb.co.uk 5.1.2 NetBSD 5.1.2 (GENERIC) #0: Thu Feb  2 13:33:26 UTC 
2012  
builds%b7.netbsd.org@localhost:/home/builds/ab/netbsd-5-1-2-RELEASE/cobalt/201202021012Z-obj/home/builds/ab/netbsd-5-1-2-RELEASE/src/sys/arch/cobalt/compile/GENERIC
 cobalt
>Description:
Libffi 3.0.11 from pkgsrc fails to compile on cobalt qube2 in ffitarget.h with 
the error;

         -- something is very wrong --

The issue appears to be due to _MIPS_SIM not being defined.  I defined it as 32 
bit just before the error in ffitarget.h to get around for now as below, 
however I'm not sure of the implications of this not being set to begin with.

         #ifndef _MIPS_SIM
         #  define _MIPS_SIM _ABIO32
         #endif

>How-To-Repeat:
Cobalt qube on 5.1.2 using restorecd
Get pkgsrc 2012Q3, (attempted to update via cvs but no updates)
Make install libffi from pkgsrc
>Fix:
Add the following in ffitarget.h:

         #ifndef _MIPS_SIM
         #  define _MIPS_SIM _ABIO32
         #endif

Just before 

         #if !defined(_MIPS_SIM)
         # error -- something is very wrong --