Lister automatiquement les fichiers d'un repertoire : problème de portabilité?

#include <boost/filesystem/operations.hpp>
#include <boost/filesystem/path.hpp>
#include <iostream>
#include <iomanip>

namespace fs = boost::filesystem;

void displaySpace(int nb)
{
  for (int i = 0; i < nb; ++i)
    std::cout << ' ';
}

void listDirectory(const fs::path& path,
		   bool recursive,
		   int depth = 0)
{
  if (!fs::exists(path))
    return;

  fs::directory_iterator end;
  for (fs::directory_iterator it(path); it != end; ++it)
  {
    displaySpace(depth);
    if (fs::is_directory(it->status()))
    {
      if (recursive)
	listDirectory(it->path(), recursive, depth + 2);
      std::cout << it->path().filename() << "/" << std::endl;
    }
    else if (fs::is_regular_file(it->status()))
      std::cout << it->path().filename() << std::endl;
    else
      std::cout << it->path().filename() << " [other]" << std::endl;
  }
}

int main()
{
  listDirectory(".", false);
  listDirectory(".", true);

  return 0;
}