c - iOS library to BitCode -

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i downloaded xcode 7 beta, , xcode complains of c libraries not being compiled bitcode. how go telling clang produce bitcode compatible ios? i've seen similar answers on stackoverflow, don't know if apply producing bitcode libraries ios.

edit:

i using correct setting, -fembed-bitcode, when try archive, error: ld: warning: ignoring file xxxx/xxxx, file built archive not architecture being linked (arm64). when use -fembed-bitcode-marker, can archive, error: full bitcode bundle not generated because xx/xx built bitcode marker. library must generated xcode archive build bitcode enabled.

any ideas on going wrong? library compiling successfully, doesn't let me archive. created simple add function , made library, , same symptoms, not library i'm compiling.

edit 2: must build both arm64 , armv7 versions using bitcode , lipo them together. using bitcode doesn't take away need fat library when archiving. source : https://forums.developer.apple.com/message/25132#25132

when building static libraries must following bitcode generation: 

-fembed-bitcode

note: command available xcode7+

in regards accepted answer of using -fembed-bitcode-marker

you should aware normal build -fembed-bitcode-marker option produce minimal size embedded bitcode sections without real content. done way of testing bitcode-related aspects of build without slowing down build process. actual bitcode content included when archive build.

bwilson apple staff. https://forums.developer.apple.com/thread/3971#12225

to more specific:

  • -fembed-bitcode-marker marks bitcode in binary after archive build.
  • -fembed-bitcode full bitcode generation , embedding, need use building static libraries.
  • xcode builds -fembed-bitcode-marker regular builds (like deploy simulator)
  • xcode builds -fembed-bitcode archive builds / production builds (as needed apple).

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