[MacPorts] #20894: Mono fails to build on Snow Leopard x86_64

[MacPorts]

#20894: Mono fails to build on Snow Leopard x86_64
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 Reporter:  matt@…                |       Owner:  mww@…           
     Type:  defect                |      Status:  new             
 Priority:  Normal                |   Milestone:                  
Component:  ports                 |     Version:  1.8.0           
 Keywords:  snowleopard           |        Port:  mono            
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Comment(by shrift@…):

 Replying to [comment:21 steals.mail@…]:
 > Replying to [comment:19 mighty_ernie@…]:
 > > Replying to [comment:15 rgabo@…]:
 > > > Replying to [comment:7 mighty_ernie@…]:
 > > > > Replying to [comment:6 mighty_ernie@…]:
 > > > > > The latest Mono supports x86_64 on Darwin.  The port just needs
 to be upgraded.
 > > > >
 > > > > Oh, I lied.  The latest mono does not support x86_64 fully.
 Someone is working on it, but suggests configuring for 32bit for the time
 being:
 > > > >
 > > > > http://go-mono.com/forums/#nabble-p25356442
 > > >
 > > > Building using the command 'sudo port install mono build_arch=i386'
 gets me further, but I still get the following error:
 > >
 > > Apparently using the following flags had worked successfully.  I'm not
 enough of a macports guru to know how to do this, though :S
 > >
 > > -m32 -Dmacosx -D_XOPEN_SOURCE
 > >
 >
 > add line ' configure.cflags-append "-m32 -Dmacosx -D_XOPEN_SOURCE" '
 before the lines configure.args....
 > and install port with command 'sudo port install mono build_arch=i386'

 Where should we add that line? I can't find a "configure.args" anywhere.

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Ticket URL: <http://trac.macports.org/ticket/20894#comment:22>
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