Retrieves Bitcode from Mach-O binaries

Bitcode stores as an xar archive inside of a Mach-O binary.

This tool extracts the archive and puts it near the binary, so it can be easily discovered using xar and llvm-dis

Clone the repo and run make, built binary lays inside of build directory

Note: currently is does not work with static libraries, there is an opened issue #1, if you need this feature please a comment there, it will bump prioity of this project at my personal todo-list.

To use bitcode_retriever simple feed him your binary and it'll produce archive with bitcode.

It accepts both fat and non-fat binaries. For fat binaries it produces separate archive for each slice, e.g.:

for non-fat binaries it produces just one archive with the bitcode:

To skip the xar archive and obtain the bitcode immediately, pass the -e argument.

The project provides a sample binaries, you can play a bit with them:

The xar archive stores set of files with bitcode:

You can dump LLVM IR from each file (1, 2) using llvm-dis

If you have any problems or found some bug - feel free to open an issue and/or send a pull request