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OPS 14 - Determining if a 680x0 program is Running on a PPC (27-September-96)

Q How do I determine if my 68K program is running on a PPC?

A The best way to do this is to use the Gestalt Selectors as described in the Universal Interface file Gestalt.h:

enum {
	gestaltSysArchitecture = 'sysa',/* Native System Architecture */
	gestalt68k	= 1,	/* Motorola MC68k architecture */
	gestaltPowerPC	= 2/* IBM PowerPC architecture */
};

A snippet of code that uses this could look something like this in your 68K program:

#include 
#include 
#include 
     long myattr;
    OSErr err;
  	err = Gestalt( gestaltSysArchitecture, &myattr;);
 	if (err == noErr) {
		if (myattr == gestaltPowerPC) {
			InstallExtraPPCComp();
		}
	} else {
		// handle error condition
	}

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