title: building for iOS, but linking in object file built for macOS, file '…/Release-iphoneos/libRNVectorIcons.a' for architecture armv7
body: <p>When compiling a release archive for the "Generic iOS device" on Xcode 10,<br>
  after having upgraded tons of libraries (incl. react-native, native-base),<br>
  I'm encountering the following error. (It currently works in the simulator.)</p>
  
  <pre><code>clang: error: linker command failed with exit code 1 (use -v to see invocation)
  </code></pre>
  
  <p>This also happened to the <code>bugsnag-react-native</code> library, wihch I removed, now it's this.</p>
  
  <p>My environment:</p>
  
  <pre><code>    "native-base": "^2.11.0",
          "react-native-vector-icons": { "version": "6.1.0", } // from package-lock.json
  </code></pre>
  
  <p>Xcode: Version 10.1 (10B61)</p>
  
  <hr>
  
  <p>Are the ar archives in question published by the library developers or compiled by Xcode? Have they forgotten to compile in code for another architecture or has my xcode forgotten to do so?</p>
  
  <p>Any suggestions or ideas would be appreciated,
  Thank you!</p>