title: Xcode 11, Command CodeSign failed with a nonzero exit code
body: <p>Ever since updating (against my will) to Xcode 11, I'm getting this error when I try to build my project:</p>
  
  <pre><code>CodeSign /Volumes/HDD/OpenFrameworks/of_v0.9.8_osx_release/apps/plus-pool-light/pplight-ofx-098/bin/pplight-ofx-098Debug.app (in target 'pplight-ofx-098' from project 'pplight-ofx-098')
  cd /Volumes/HDD/OpenFrameworks/of_v0.9.8_osx_release/apps/plus-pool-light/pplight-ofx-098
  export CODESIGN_ALLOCATE=/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/codesign_allocate
  
  Signing Identity:     "-"
  
  
   /usr/bin/codesign --force --sign - --entitlements /Volumes/HDD/OpenFrameworks/of_v0.9.8_osx_release/apps/plus-pool-light/pplight-ofx-098/build/pplight-ofx-098.build/Debug/pplight-ofx-098.build/pplight-ofx-098Debug.app.xcent --timestamp=none /Volumes/HDD/OpenFrameworks/of_v0.9.8_osx_release/apps/plus-pool-light/pplight-ofx-098/bin/pplight-ofx-098Debug.app
  
  /Volumes/HDD/OpenFrameworks/of_v0.9.8_osx_release/apps/plus-pool-light/pplight-ofx-098/bin/pplight-ofx-098Debug.app: code object is not signed at all
  In subcomponent: /Volumes/HDD/OpenFrameworks/of_v0.9.8_osx_release/apps/plus-pool-light/pplight-ofx-098/bin/pplight-ofx-098Debug.app/Contents/Frameworks/GLUT.framework
  Command CodeSign failed with a nonzero exit code
  </code></pre>
  
  <p>I've tried cleaning my project, resetting my login keychain, and restarting my computer, but I still get this error... what to do?</p>
  
  <p>I am building an OSX App using OpenFrameworks, <em>not an iOS App.</em> When I build it in Xcode 10.3 works fine with no errors.</p>
  
  <p>The parts of this question that are unique is that this is for Xcode 11, not 10, and none of the answers for that other question worked for me!</p>