How can I check if a 3rd party static library for the iPhone SDK is compiled for Thumb?

StackOverflow https://stackoverflow.com/questions/5838374

  •  27-10-2019
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Question

I'm working with a development platform (monotouch) that does not allow me to link 3rd party libraries that are compiled for Thumb due to a bug in the apple linker. How can I determine if a library was compiled for thumb or not?

Thanks!

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Solution

Run otool -tv <LIBRARY> on it and look for 2 byte instructions.

Here is an example showing thumb code: http://pastebin.com/4Kq52f9D Here is an example showing NON-thumb code: http://pastebin.com/137GJDR1

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