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Re: command-line test for 64-bit hardware
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Re: command-line test for 64-bit hardware


  • Subject: Re: command-line test for 64-bit hardware
  • From: Brian Arnold <email@hidden>
  • Date: Thu, 06 Sep 2007 09:02:34 -0400
  • Thread-topic: command-line test for 64-bit hardware

Hi,

We build almost everything from gnu makefiles, and so we use our own
compiled tool, nativearchactual (hmm, wonder where I got this idea from), to
detect processor types understood by Apple's gcc, replacing tests for uname
-p or uname -m.


#include <stdio.h>

static const char* getProcessorType()
{
#if defined(__x86_64__)
    return ("x86_64");
#elif defined(__i386__)
    return ("i386");
#elif defined(__ppc64__)
    return ("ppc64");
#elif defined(__ppc__)
    return ("ppc");
#else
    return ("unkown processor type");
#endif
}

int main(int argc, char *argv[])
{
    printf( "%s", getProcessorType() );
    return(0);
}

To build it, use this:

 g++ nativearchactual.cpp -arch ppc -arch ppc64 -arch i386 -arch x86_64 \
 -o nativearchactual

Building this requires a minimum gcc version which supports compiling all of
these architectures.  It would be nice if Apple provided such a tool
(outside of Xcode) and kept it current.

- Brian

Mac Developer
The MathWorks, Inc.

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