title: 'algorithm' file not found
body: <p>I'm trying to do a simple console app in Xcode using the following library:</p>
  
  <p><a href="https://github.com/marstone/ingress-ios/tree/master/s2-geometry" rel="nofollow">https://github.com/marstone/ingress-ios/tree/master/s2-geometry</a></p>
  
  <p>I'm finding the library but its not finding the algorithm library.</p>
  
  <p>Sample example code</p>
  
  <pre><code>#import &lt;Foundation/Foundation.h&gt;
  
  #import "S2Geometry.h"
  
  #include "s2.h"
  #include "s2cellid.h"
  #include "s2latlng.h"
  #include "s2latlngrect.h"
  #include "s2regioncoverer.h"
  
  int main(int argc, const char * argv[]) {
  
      @autoreleasepool {
  
          // insert code here...
          NSLog(@"Hello, World!");
  
          S2LatLngRect rect = S2LatLngRect(S2LatLng::FromDegrees(MIN(37.78272, 37.781719), MIN(-121.971427, -121.972007)), S2LatLng::FromDegrees(MAX(37.78272,
  37.781719), MAX(-121.971427, -121.972007)));
      }
      return 0; }
  </code></pre>
  
  <p>I get the following error:</p>
  
  <pre><code> ./s2-geometry/s2.h:6:10: fatal error: 'algorithm' file not found
  </code></pre>