site_archiver@lists.apple.com Delivered-To: darwin-dev@lists.apple.com Why do you need to know? You can always: #if __PPC__ #if __LP64__ ... -- Terry _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-dev mailing list (Darwin-dev@lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-dev/site_archiver%40lists.appl... On Apr 27, 2009, at 2:11 AM, rohan a <info1686@gmail.com> wrote: Hello, I need to determine at program run time, the architecture type(x86, ppc or x86_64) of the Mac OS X machine. Is it possible to do this? Does Mac OS provide any API for this? and set some variable at compile time, but the only real reason to need to know is if your code is architecture dependent, which you'd determine at compile time anyway (and it's better to write your code so it doesn't care). This email sent to site_archiver@lists.apple.com