[Distutils] Binary Wheels and "universal" builds on OS-X

[Chris Barker - NOAA Federal]

On Mon, Jun 3, 2013 at 3:47 PM, Daniel Holth <dholth at gmail.com> wrote:

> That would make sense. Can you come up with code to detect that a
> newly compiled extension is universal, and that a Python is?

It looks like distutils.util.get_platform() now does the right thing
for knowing what the currently running pyton is (see Ronald's message)

For determining the status of a newly compiled extension, I usually
simple run the "file" command line utility on it:

$ file python
python: Mach-O universal binary with 2 architectures
python (for architecture ppc):	Mach-O executable ppc
python (for architecture i386):	Mach-O executable i386

(works for *.so, too...)

that could easily be parsed out, but we would still want to know the
deployment target, which maybe you could get by parsing otool output:

$ otool -L python
python (architecture ppc):
	/Library/Frameworks/Python.framework/Versions/2.7/Python
(compatibility version 2.7.0, current version 2.7.0)
	/usr/lib/libmx.A.dylib (compatibility version 1.0.0, current version 47.1.0)
	/usr/lib/libSystem.B.dylib (compatibility version 1.0.0, current
version 88.3.10)
python (architecture i386):
	/Library/Frameworks/Python.framework/Versions/2.7/Python
(compatibility version 2.7.0, current version 2.7.0)
	/usr/lib/libSystem.B.dylib (compatibility version 1.0.0, current
version 88.3.10)

(compatibility version of libSystem???)

But I imagine there is a cleaner way -- Ronald??

-Chris






-- 

Christopher Barker, Ph.D.
Oceanographer

Emergency Response Division
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Chris.Barker at noaa.gov