Not your RB answer, but perhaps a carbon starter...
From an Apple sample:
/* Determines whether an executable's header matches the current
architecture, ppc, and/or i386.
* Returns true if the header corresponds to a Mach-O, 64-bit Mach-O, or
universal binary executable, false otherwise.
* Returns by reference the result of matching against a given architecture
(matches_current, matches_ppc, matches_i386).
* Checks for a given architecture only if the corresponding
return-by-reference argument is non-NULL.
*/
at:
http://developer.apple.com/samplecode/CheckExecutableArchitecture/listing1.html
donde esta ...de espera
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