+#include <openssl/bio.h>
+
+#if BIO_FLAGS_UPLINK==0
+/* Shortcut UPLINK calls on most platforms... */
+#define UP_stdin stdin
+#define UP_stdout stdout
+#define UP_stderr stderr
+#define UP_fprintf fprintf
+#define UP_fgets fgets
+#define UP_fread fread
+#define UP_fwrite fwrite
+#undef UP_fsetmod
+#define UP_feof feof
+#define UP_fclose fclose
+
+#define UP_fopen fopen
+#define UP_fseek fseek
+#define UP_ftell ftell
+#define UP_fflush fflush
+#define UP_ferror ferror
+#ifdef _WIN32
+#define UP_fileno _fileno
+#define UP_open _open
+#define UP_read _read
+#define UP_write _write
+#define UP_lseek _lseek
+#define UP_close _close
+#else
+#define UP_fileno fileno
+#define UP_open open
+#define UP_read read
+#define UP_write write
+#define UP_lseek lseek
+#define UP_close close
+#endif
+#endif