add external dependencies in a pre-built way to avoid incompatibilities

external/include/sodium/crypto_onetimeauth_poly1305.h

@@ -0,0 +1,72 @@
+#ifndef crypto_onetimeauth_poly1305_H
+#define crypto_onetimeauth_poly1305_H
+
+#ifdef __cplusplus
+# ifdef __GNUC__
+#  pragma GCC diagnostic ignored "-Wlong-long"
+# endif
+extern "C" {
+#endif
+
+#include <stdint.h>
+#include <stdio.h>
+#include <stdlib.h>
+
+#include <sys/types.h>
+
+#include "export.h"
+
+typedef struct CRYPTO_ALIGN(16) crypto_onetimeauth_poly1305_state {
+    unsigned char opaque[256];
+} crypto_onetimeauth_poly1305_state;
+
+SODIUM_EXPORT
+size_t crypto_onetimeauth_poly1305_statebytes(void);
+
+#define crypto_onetimeauth_poly1305_BYTES 16U
+SODIUM_EXPORT
+size_t crypto_onetimeauth_poly1305_bytes(void);
+
+#define crypto_onetimeauth_poly1305_KEYBYTES 32U
+SODIUM_EXPORT
+size_t crypto_onetimeauth_poly1305_keybytes(void);
+
+SODIUM_EXPORT
+int crypto_onetimeauth_poly1305(unsigned char *out,
+                                const unsigned char *in,
+                                unsigned long long inlen,
+                                const unsigned char *k)
+            __attribute__ ((nonnull(1, 4)));
+
+SODIUM_EXPORT
+int crypto_onetimeauth_poly1305_verify(const unsigned char *h,
+                                       const unsigned char *in,
+                                       unsigned long long inlen,
+                                       const unsigned char *k)
+            __attribute__ ((warn_unused_result)) __attribute__ ((nonnull(1, 4)));
+
+SODIUM_EXPORT
+int crypto_onetimeauth_poly1305_init(crypto_onetimeauth_poly1305_state *state,
+                                     const unsigned char *key)
+            __attribute__ ((nonnull));
+
+SODIUM_EXPORT
+int crypto_onetimeauth_poly1305_update(crypto_onetimeauth_poly1305_state *state,
+                                       const unsigned char *in,
+                                       unsigned long long inlen)
+            __attribute__ ((nonnull(1)));
+
+SODIUM_EXPORT
+int crypto_onetimeauth_poly1305_final(crypto_onetimeauth_poly1305_state *state,
+                                      unsigned char *out)
+            __attribute__ ((nonnull));
+
+SODIUM_EXPORT
+void crypto_onetimeauth_poly1305_keygen(unsigned char k[crypto_onetimeauth_poly1305_KEYBYTES])
+            __attribute__ ((nonnull));
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif