Cocoapods' OpenSSL isn't compiled using bitcode, which prevents bitcode from being generated for dependent apps. The prepare_command of its podspec needs to be updated like in this Gist:

https://gist.github.com/felix-schwarz/c61c0f7d9ab60f53ebb0

• Using clang instead of gcc.
• Passing it -fembed-bitcode.
• Passing no-asm to ./Configure.

CC: @thstart because I know you're interested in this support.