Bitcode is an intermediate representation of a compiled binary. Including bitcode will allow Apple to re-optimize your app binary in the future without the need to submit a new version of your app to the store. PSPDFKit for iOS contains bitcode since version 5. Bitcode is also one of the largest factors in the size of our SDK.
Open a terminal and navigate into the
Here is how to check what architectures are available:
Check if bitcode exists for a particular slice:
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$ otool -arch arm64 -l PSPDFKit | grep LLVM segname __LLVM segname __LLVM $ otool -arch armv7 -l PSPDFKit | grep LLVM segname __LLVM segname __LLVM
Some articles will recommend searching for
bitcode. However, LLVM is a much better indicator for the existance of bitcode.
Xcode 7.2 added a new tool called
bitcode_strip that allows to remove bitcode chunks from binaries:
Removing bitcode will disallow Apple to run binary optimizations on your behalf. You can verify that it worked by checking the file size, which should be significantly smaller than the original file, or use
otool as listed above.
A BCSymbolMap is a lot like a dSYM for bitcode. Xcode builds that as part of creating the app binary and also for every dynamic framework. It's required for re-symbolicating function/method names to understand crashers. Symbol maps are per architecture, so there are currently two (armv7 and arm64) in PSPDFKit. You can learn more in the Framework Size article.