Support DLL-exporting of MD5 functions.

src/hash/md5.c

@@ -34,7 +34,7 @@ documentation and/or software.
 	#define LITTLE_ENDIAN	/* Little Endian by default */
 #endif
 
-void MD5_open(MD5 *md5)
+void DLLCALL MD5_open(MD5 *md5)
 {
   md5->count[0] = md5->count[1] = 0;
   /* Load magic initialization constants.*/
@@ -194,7 +194,7 @@ static void MD5Transform(UINT4 state[4], const BYTE block[64])
   memset(x, 0, sizeof(x));
 }
 
-void MD5_digest(MD5 *md5, const void *input, size_t inputLen)
+void DLLCALL MD5_digest(MD5 *md5, const void *input, size_t inputLen)
 {
   unsigned int i, index, partLen;
   /* Compute number of bytes mod 64 */
@@ -229,7 +229,7 @@ void MD5_digest(MD5 *md5, const void *input, size_t inputLen)
 #define ENCODE(p,n) (p)[0]=n,(p)[1]=n>>8,(p)[2]=n>>16,(p)[3]=n>>24
 #endif
 
-void MD5_close(MD5 *md5, BYTE digest[MD5_DIGEST_SIZE])
+void DLLCALL MD5_close(MD5 *md5, BYTE digest[MD5_DIGEST_SIZE])
 {
   BYTE bits[8];
   unsigned int index, padLen;
@@ -257,7 +257,7 @@ void MD5_close(MD5 *md5, BYTE digest[MD5_DIGEST_SIZE])
   memset(md5, 0, sizeof(MD5));
 }
 
-BYTE* MD5_calc(BYTE digest[MD5_DIGEST_SIZE], const void* buf, size_t len)
+BYTE* DLLCALL MD5_calc(BYTE digest[MD5_DIGEST_SIZE], const void* buf, size_t len)
 {
 	MD5 ctx;
 
@@ -270,7 +270,7 @@ BYTE* MD5_calc(BYTE digest[MD5_DIGEST_SIZE], const void* buf, size_t len)
 
 /* conversion for 16 character binary md5 to hex */
 
-BYTE* MD5_hex(BYTE* to, const BYTE digest[MD5_DIGEST_SIZE])
+BYTE* DLLCALL MD5_hex(BYTE* to, const BYTE digest[MD5_DIGEST_SIZE])
 {
 	BYTE const* from = digest;
     static char *hexdigits = "0123456789abcdef";

src/hash/md5.h

@@ -50,15 +50,39 @@ typedef struct
   BYTE	buffer[64];
 } MD5;
 
+#if defined(DLLEXPORT)
+	#undef DLLEXPORT
+#endif
+#if defined(DLLCALL)
+	#undef DLLCALL
+#endif
+
+#if defined(_WIN32) && (defined(MD5_IMPORTS) || defined(MD5_EXPORTS))
+	#if defined(MD5_IMPORTS)
+		#define DLLEXPORT	__declspec(dllimport)
+	#else
+		#define DLLEXPORT	__declspec(dllexport)
+	#endif
+	#if defined(__BORLANDC__)
+		#define DLLCALL __stdcall
+	#else
+		#define DLLCALL
+	#endif
+#else	/* !_WIN32 || !_DLL*/
+	#define DLLEXPORT
+	#define DLLCALL
+#endif
+
+
 #ifdef __cplusplus
 extern "C" {
 #endif
 
-void MD5_open(MD5* ctx);
-void MD5_digest(MD5* ctx, const void* buf, size_t len);
-void MD5_close(MD5* ctx, BYTE digest[MD5_DIGEST_SIZE]);
-BYTE* MD5_calc(BYTE digest[MD5_DIGEST_SIZE], const void* buf, size_t len);
-BYTE* MD5_hex(BYTE* dest, const BYTE digest[MD5_DIGEST_SIZE]);
+DLLEXPORT void	DLLCALL MD5_open(MD5* ctx);
+DLLEXPORT void	DLLCALL MD5_digest(MD5* ctx, const void* buf, size_t len);
+DLLEXPORT void	DLLCALL MD5_close(MD5* ctx, BYTE digest[MD5_DIGEST_SIZE]);
+DLLEXPORT BYTE*	DLLCALL MD5_calc(BYTE digest[MD5_DIGEST_SIZE], const void* buf, size_t len);
+DLLEXPORT BYTE*	DLLCALL MD5_hex(BYTE* dest, const BYTE digest[MD5_DIGEST_SIZE]);
 
 #ifdef __cplusplus
 }