CODEWITHSUNDEEP
macosbinaryosx-snow-leopard
jideel
jideel

Reputation: 502

Determine if an executable (or library) is 32 or 64 bit

Is it possible to get information about any binary on OS X to determine if it's a 32 bit or 64 bit binary?

I played with the 'otool' command but can't find this kind of information.

Upvotes: 30

Views: 18497

Answers (2)

Grant Lammi
Grant Lammi

Reputation: 1404

Use the file command instead of otool. It will list all the architectures in the binary. On Intel Macs i386 is 32 bit and x86_64 is 64 bit.

Upvotes: 45

greg
greg

Reputation: 4953

From Nicholas in a comment, lipo -info also works. This is what you must use on static libraries, since file only displays "current ar archive random library."

Upvotes: 11

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