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Date: Fri, 01 Jan 2010 07:38:34 -0800
From: Tim Prince <n8tm AT aol DOT com>
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Subject: Re: Appropriate expectation on the degree of cygwin and MS interoperability
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Neil DOT Mowbray AT calgacus DOT com wrote:

> For the most part the cygwin tools interoperate with MS artifacts but
> it does break down, especially, with 64bit artifacts.  For example, nm
> can work with 32bit object files created by MS cl.exe but it cannot
> work with 64bit MS object files (unrecognised file format).
> 
> The question is: how far should I expect the interoperability to go?
> For example, is the fact that nm cannot handle 64bit MS object files
> a (1) defeat in cygwin/nm or (2) I should be grateful that it works
> with 32bit files and otherwise lower my expectation?
> 
cygwin binutils doesn't set or understand /machine tags, which are 
required for 64-bit targets.
The mingw32-64 project is a partial solution.
I, too, would be grateful for a satisfactory solution which persuades 
cygwin make to use a 64-bit alternative to ar when needed.

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