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Author Topic: Mac binaries no longer 64-bit  (Read 854 times)
toffoo
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December 04, 2011, 05:40:47 AM
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I just realized that at least the last two versions (0.4 and 0.5) of the Mac OS X builds distributed from the main SourceForge links are 32-bit binaries.  I am almost certain they used to be 64-bit apps.

Just curious, why the change and are there any plans to compile future releases as 64-bit again?


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Gavin Andresen
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December 05, 2011, 12:00:19 AM
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Just curious, why the change and are there any plans to compile future releases as 64-bit again?

Why the change:  because it is twice as fast to compile just 32-bit, a 32-bit-only executable is smaller and faster to download, and there is no advantage to running 64-bit (bitcoin doesn't need more than 4 gigabytes of memory, there are no performance-critical routines that would be faster running 64-bit, etc).

If there's a good reason to compile 64-bit, or if we ever drop support for 32-bit Macs then a 64-bit version would make sense.

How often do you get the chance to work on a potentially world-changing project?
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