title: "libRestKit.a, file was built for archive which is not the architecture being linked (armv7)"
body: <p>I'm trying to use xcodebuild to build a project, but <code>RestKit</code> and <code>GPUImage</code> are giving issues below:</p>
  <blockquote>
  <p>ld: warning: ignoring file /project/libGPUImage.a, missing required architecture armv7 in file /project/libGPUImage.a (2 slices)</p>
  <p>ld: warning: ignoring file /project/libRestKit.a, file was built for archive which is not the architecture being linked (armv7): /project/libRestKit.a</p>
  </blockquote>
  <p>Please help!</p>