Expected class or namespace

I'm trying to figure out why I'm getting this error in Xcode when trying to write this function. I've included the following files.

#include "GeographicLib/Geodesic.hpp"
using namespace GeographicLib;

Xcode is telling me that it's expecting a class or namespace on the line that declares the Geodesic.

double Route::totalDistance()
{
    double totalDis = 0;

    try
    {
        const Geodesic& geod = Geodesic::WGS84();
    }
    catch (const exception& e) {
        cerr << "Caught exception: " << e.what() << "\n";
        return 1;
    }

    for (vector<route_node>::iterator it = route.begin()+1; it != route.end(); ++it)
    {
        double
        lat1 = it->latitude, lon1 = it->longitude,
        lat2 = (it+1)->latitude, lon2 = (it+1)->longitude;
        double s12;
        geod.Inverse(lat1, lon1, lat2, lon2, s12);
        totalDis += s12;
    }

    return totalDis;
}