-int atoi (const std::string&);
-int32_t atol (const std::string&);
-int64_t atoll (const std::string&);
-double atof (const std::string&);
-std::string url_decode (std::string const &);
+LIBPBD_API int atoi (const std::string&);
+LIBPBD_API int32_t atol (const std::string&);
+LIBPBD_API int64_t atoll (const std::string&);
+LIBPBD_API double atof (const std::string&);
+LIBPBD_API std::string url_decode (std::string const &);