#include <fstream>
#include <string>
void foo(std::string fileName) {
   std::ifstream xclbinFile(fileName, std::ifstream::binary);
   xclbinFile.seekg(0, xclbinFile.end);
   size_t size = xclbinFile.tellg();
   xclbinFile.seekg(0, xclbinFile.beg);
}