LHAPDF is hosted by Hepforge, IPPP Durham
LHAPDF  6.1.6
/tests/testpaths.cc
// Test program for path searching machinery
#include "LHAPDF/Paths.h"
#include <iostream>
using namespace std;
int main() {
for (const string& p : LHAPDF::paths())
cout << p << endl;
cout << "@" << LHAPDF::findFile("lhapdf.conf") << "@" << endl;
cout << "List of available PDFs:" << endl;
for (const string& s : LHAPDF::availablePDFSets())
cout << " " << s << endl;
return 0;
}