条件链接arm64 / armv7

Question

I have a .a library that was compiled only for the arm64 architecture and I don't have access to the source code.

I added preprocessor flags to disable the usage of the library when compiling under armv7

#if arch(arm64)
  // Instatiate an object of the library and use it
#else
  // Do nothing (for armv7)
#endif 

The linking is done via Other linker flags but I am getting the error "Invalid bitcode signature" / Linker command failed.

Is there a way to conditionally link the library? I am using Xcode 9

Answer 1

What I actually end up doing to silence the compiler is create a FAT library with no compiled code for the other architectures. This would solve the problem as the library is not needed during the linking process