[MacPorts] #28703: Python 2.6 (Universal) does not honor 'arch -i386' command at runtime

[MacPorts]

#28703: Python 2.6 (Universal) does not honor 'arch -i386' command at runtime
-----------------------------+----------------------------------------------
 Reporter:  tcwan@…          |       Owner:  macports-tickets@…                   
     Type:  defect           |      Status:  new                                  
 Priority:  Normal           |   Milestone:                                       
Component:  ports            |     Version:  1.9.2                                
 Keywords:                   |        Port:                                       
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 I have built Python 2.6 and 2.7 with +universal. I need to execute 32-bit
 Python for a specific module.

 tcmac$ file /opt/local/bin/python2.*
 /opt/local/bin/python2.6:        Mach-O universal binary with 2
 architectures
 /opt/local/bin/python2.6 (for architecture x86_64):     Mach-O 64-bit
 executable x86_64
 /opt/local/bin/python2.6 (for architecture i386):       Mach-O executable
 i386
 /opt/local/bin/python2.6-config: a /opt/local/Library/Frameworks/P script
 text executable
 /opt/local/bin/python2.7:        Mach-O universal binary with 2
 architectures
 /opt/local/bin/python2.7 (for architecture x86_64):     Mach-O 64-bit
 executable x86_64
 /opt/local/bin/python2.7 (for architecture i386):       Mach-O executable
 i386
 /opt/local/bin/python2.7-config: a /opt/local/Library/Frameworks/P script
 text executable

 However, when using the arch command to specify the runtime architecture,
 only Python 2.7 honors this, it does not work with Python 2.6.

 tcmac$ arch -i386 /opt/local/bin/python2.6
 Python 2.6.6 (r266:84292, Mar  4 2011, 09:28:43)
 [GCC 4.2.1 (Apple Inc. build 5664)] on darwin
 Type "help", "copyright", "credits" or "license" for more information.
 >>> import sys
 >>> print sys.maxsize
 9223372036854775807
 >>>
 tcmac$ arch -i386 /opt/local/bin/python2.7
 Python 2.7.1 (r271:86832, Mar  1 2011, 09:22:53)
 [GCC 4.2.1 (Apple Inc. build 5664)] on darwin
 Type "help", "copyright", "credits" or "license" for more information.
 >>> import sys
 >>> print sys.maxsize
 2147483647
 >>>

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Ticket URL: <https://trac.macports.org/ticket/28703>
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