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64 bit ??
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64 bit ??


  • Subject: 64 bit ??
  • From: Phil Hystad <email@hidden>
  • Date: Fri, 15 May 2009 09:52:59 -0700

I must be doing something wrong. I want to build and execute a 64 bit C++ program on my iMac and it does not appear to be doing the right thing.

I am using Xcode 3.1.2 on Mac OS X 10.5.7 on iMac with Intel Core 2 Duo processor. Based on what I know, I have a 64-bit enabled platform.

So, I go to the Xcode project build info page for my C++ project to make sure the architectures designate 64 bit. I have one architecture that mentions 64 bit which is called "32/64-bit Universal". I am assuming from what I have read that this is supposed to give me LP64 architecture -- long is 64 bit, pointer is 64 bit. But, if I merely print out the sizeof a pointer or long I get 4 bytes for each.

In the Architectures selection box there are no other options available. Now, there is the ability to add others via the Others... option but am I supposed to do this since there is nothing in any documentation that I can find that suggests that this is needed.

So, what am I missing?

phil
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