dynamic loading of network stack no longer needed

ext/picotcp/stack/pico_md5.c

@@ -0,0 +1,43 @@
+/*********************************************************************
+ *    PicoTCP. Copyright (c) 2015 Altran Intelligent Systems. Some rights reserved.
+ *    See LICENSE and COPYING for usage.
+ *
+ *    Authors: Daniele Lacamera
+ *    *********************************************************************/
+
+
+#include <pico_md5.h>
+
+#if defined (PICO_SUPPORT_CYASSL)
+#include <cyassl/ctaocrypt/md5.h>
+
+void pico_md5sum(uint8_t *dst, const uint8_t *src, size_t len)
+{
+    Md5 md5;
+    InitMd5(&md5);
+    Md5Update(&md5, src, len);
+    Md5Final(&md5, dst);
+}
+
+#elif defined (PICO_SUPPORT_POLARSSL)
+#include <polarssl/md5.h>
+
+void pico_md5sum(uint8_t *dst, const uint8_t *src, size_t len)
+{
+    md5(src, len, dst);
+}
+
+#else
+static void (*do_pico_md5sum)(uint8_t *dst, const uint8_t *src, size_t len);
+void pico_md5sum(uint8_t *dst, const uint8_t *src, size_t len)
+{
+    if (do_pico_md5sum) {
+        do_pico_md5sum(dst, src, len);
+    }
+}
+
+void pico_register_md5sum(void (*md5)(uint8_t *, const uint8_t *, size_t))
+{
+    do_pico_md5sum = md5;
+}
+#endif