diff --git a/JHA/jackpotcoin.cu b/JHA/jackpotcoin.cu
index 7d6d4cf..bcca41f 100644
--- a/JHA/jackpotcoin.cu
+++ b/JHA/jackpotcoin.cu
@@ -50,7 +50,7 @@ static uint32_t *d_branch2Nonces[8];
 static uint32_t *d_branch3Nonces[8];
 
 // Original jackpothash Funktion aus einem miner Quelltext
-inline unsigned int jackpothash(void *state, const void *input)
+extern "C" unsigned int jackpothash(void *state, const void *input)
 {
     sph_blake512_context     ctx_blake;
     sph_groestl512_context   ctx_groestl;
diff --git a/groestlcoin.cpp b/groestlcoin.cpp
index dc3b0fe..63b6401 100644
--- a/groestlcoin.cpp
+++ b/groestlcoin.cpp
@@ -40,7 +40,7 @@ void sha256func(unsigned char *hash, const unsigned char *data, int len)
         be32enc((uint32_t *)hash + i, T[i]);
 }
 
-static void groestlhash(void *state, const void *input)
+extern "C" void groestlhash(void *state, const void *input)
 {
     // Tryout GPU-groestl
 
diff --git a/miner.h b/miner.h
index c8d1b9f..5fb53a6 100644
--- a/miner.h
+++ b/miner.h
@@ -251,10 +251,6 @@ extern int scanhash_x15(int thr_id, uint32_t *pdata,
 	const uint32_t *ptarget, uint32_t max_nonce,
 	unsigned long *hashes_done);
 
-extern void fugue256_hash(unsigned char* output, const unsigned char* input, int len);
-extern void heavycoin_hash(unsigned char* output, const unsigned char* input, int len);
-extern void groestlcoin_hash(unsigned char* output, const unsigned char* input, int len);
-
 struct thr_info {
 	int		id;
 	pthread_t	pth;
@@ -351,6 +347,12 @@ extern void tq_freeze(struct thread_q *tq);
 extern void tq_thaw(struct thread_q *tq);
 
 void print_hash_tests(void);
+unsigned int jackpothash(void *state, const void *input);
+void fugue256_hash(unsigned char* output, const unsigned char* input, int len);
+void heavycoin_hash(unsigned char* output, const unsigned char* input, int len);
+void groestlhash(void *state, const void *input);
+void myriadhash(void *state, const void *input);
+void quarkhash(void *state, const void *input);
 void x11hash(void *output, const void *input);
 void x13hash(void *output, const void *input);
 void x14hash(void *output, const void *input);
diff --git a/myriadgroestl.cpp b/myriadgroestl.cpp
index 45d9745..c689513 100644
--- a/myriadgroestl.cpp
+++ b/myriadgroestl.cpp
@@ -18,7 +18,7 @@ void myriadgroestl_cpu_hash(int thr_id, int threads, uint32_t startNounce, void
     ((((x) << 24) & 0xff000000u) | (((x) << 8) & 0x00ff0000u)   | \
       (((x) >> 8) & 0x0000ff00u) | (((x) >> 24) & 0x000000ffu))
 
-static void myriadhash(void *state, const void *input)
+extern "C" void myriadhash(void *state, const void *input)
 {
     sph_groestl512_context     ctx_groestl;
 
diff --git a/quark/quarkcoin.cu b/quark/quarkcoin.cu
index 0bc46d9..34ba0bc 100644
--- a/quark/quarkcoin.cu
+++ b/quark/quarkcoin.cu
@@ -59,7 +59,7 @@ extern void quark_compactTest_single_false_cpu_hash_64(int thr_id, int threads,
 											int order);
 
 // Original Quarkhash Funktion aus einem miner Quelltext
-inline void quarkhash(void *state, const void *input)
+extern "C" void quarkhash(void *state, const void *input)
 {
     sph_blake512_context ctx_blake;
     sph_bmw512_context ctx_bmw;
diff --git a/util.c b/util.c
index 42b8e34..55b8f86 100644
--- a/util.c
+++ b/util.c
@@ -1321,8 +1321,8 @@ out:
 
 static void print_hash(unsigned char *hash)
 {
-	for (int i=0; i < 32; i++) {
-		printf("%02x", hash[i]);
+	for (int i=0; i < 32; i += 4) {
+		printf("%02x%02x%02x%02x ", hash[i], hash[i+1], hash[i+2], hash[i+3]);
 	}
 }
 
@@ -1332,19 +1332,45 @@ void print_hash_tests(void)
 	memset(buf, 0, sizeof buf);
 	printf("CPU HASH ON EMPTY BUFFER RESULTS:\n");
 
+	memset(hash, 0, sizeof hash);
+	fugue256_hash(&hash[0], &buf[0], 32);
+	printf("\nfugue256:"); print_hash(hash);
+
+	memset(hash, 0, sizeof hash);
+	groestlhash(&hash[0], &buf[0]);
+	printf("\ngroestl: "); print_hash(hash);
+
+	memset(hash, 0, sizeof hash);
+	heavycoin_hash(&hash[0], &buf[0], 32);
+	printf("\nheavy:   "); print_hash(hash);
+
+	memset(hash, 0, sizeof hash);
+	jackpothash(&hash[0], &buf[0]);
+	printf("\njackpot: "); print_hash(hash);
+
+	memset(hash, 0, sizeof hash);
+	myriadhash(&hash[0], &buf[0]);
+	printf("\nmyriad:  "); print_hash(hash);
+
+	memset(hash, 0, sizeof hash);
+	quarkhash(&hash[0], &buf[0]);
+	printf("\nquark:   "); print_hash(hash);
+
 	memset(hash, 0, sizeof hash);
 	x11hash(&hash[0], &buf[0]);
-	printf("\nX11: "); print_hash(hash);
+	printf("\nX11:     "); print_hash(hash);
 
 	memset(hash, 0, sizeof hash);
 	x13hash(&hash[0], &buf[0]);
-	printf("\nX13: "); print_hash(hash);
+	printf("\nX13:     "); print_hash(hash);
 
 	memset(hash, 0, sizeof hash);
 	x14hash(&hash[0], &buf[0]);
-	printf("\nX14: "); print_hash(hash);
+	printf("\nX14:     "); print_hash(hash);
 
 	memset(hash, 0, sizeof hash);
 	x15hash(&hash[0], &buf[0]);
-	printf("\nX15: "); print_hash(hash);
-}
\ No newline at end of file
+	printf("\nX15:     "); print_hash(hash);
+
+	printf("\n");
+}