title: No architectures to compile for (ONLY_ACTIVE_ARCH=YES, active arch=armv7, VALID_ARCHS=armv6 i386)
body: <p>I am getting this error while building my iOS app.</p>
  
  <p>No architectures to compile for (<code>ONLY_ACTIVE_ARCH=YES, active arch=armv7, VALID_ARCHS=armv6 i386</code>).</p>
  
  <p>I am followings errors while I am trying to use _ACAccountTypeIdentifierTwitter:</p>
  
  <p>Undefined symbols for architecture armv7s:  </p>
  
  <pre><code>"_ACAccountTypeIdentifierTwitter", referenced from:
    -[ClsHomePageViewController twitterLogin:] in ClsHomePageViewController.o
  "_OBJC_CLASS_$_ACAccountStore", referenced from:
    objc-class-ref in ClsHomePageViewController.o
  ld: symbol(s) not found for architecture armv7s
  clang: error: linker command failed with exit code 1 (use -v to see invocation)
  </code></pre>
  
  <p>And my Architecture settings are as follows:</p>
  
  <pre><code>architectures: Standard Architectures (including 64-bit) (armv7,armv7s,armv64)
  Base SDK: Latest iOS (iOS 7.0)
  Build Active Architecture Only: NO
  Valid Architectures: arm64 armv7s armv7
  </code></pre>