diff --git a/driver/level3/gemm3m_level3.c b/driver/level3/gemm3m_level3.c
index d037e72cd..3351faea4 100644
--- a/driver/level3/gemm3m_level3.c
+++ b/driver/level3/gemm3m_level3.c
@@ -227,7 +227,11 @@
 #define STOP_RPCC(COUNTER)
 #endif
 
-int CNAME(blas_arg_t *args, BLASLONG *range_m, BLASLONG *range_n,
+int
+#ifndef C_MSVC
+__attribute__((visibility("hidden")))
+#endif
+	CNAME(blas_arg_t *args, BLASLONG *range_m, BLASLONG *range_n,
 		  FLOAT *sa, FLOAT *sb, BLASLONG dummy){
   BLASLONG k, lda, ldb, ldc;
   FLOAT *alpha, *beta;
diff --git a/driver/level3/gemm_thread_m.c b/driver/level3/gemm_thread_m.c
index 8813e5529..36c8f319e 100644
--- a/driver/level3/gemm_thread_m.c
+++ b/driver/level3/gemm_thread_m.c
@@ -40,7 +40,11 @@
 #include <stdlib.h>
 #include "common.h"
 
-int CNAME(int mode, blas_arg_t *arg, BLASLONG *range_m, BLASLONG *range_n, int (*function)(), void *sa, void *sb, BLASLONG nthreads) {
+int
+#ifndef C_MSVC
+__attribute__((visibility("hidden")))
+#endif
+	CNAME(int mode, blas_arg_t *arg, BLASLONG *range_m, BLASLONG *range_n, int (*function)(), void *sa, void *sb, BLASLONG nthreads) {
 
   blas_queue_t queue[MAX_CPU_NUMBER];
   BLASLONG range[MAX_CPU_NUMBER + 1];
diff --git a/driver/level3/gemm_thread_mn.c b/driver/level3/gemm_thread_mn.c
index 6b52df884..dbe3f951c 100644
--- a/driver/level3/gemm_thread_mn.c
+++ b/driver/level3/gemm_thread_mn.c
@@ -60,7 +60,11 @@ static const int divide_rule[][2] =
    { 1, 61}, { 2, 31}, { 7,  9}, { 8,  8},
 };
 
-int CNAME(int mode, blas_arg_t *arg, BLASLONG *range_m, BLASLONG *range_n, int (*function)(), void *sa, void *sb, BLASLONG nthreads) {
+int
+#ifndef C_MSVC
+__attribute__((visibility("hidden")))
+#endif
+	CNAME(int mode, blas_arg_t *arg, BLASLONG *range_m, BLASLONG *range_n, int (*function)(), void *sa, void *sb, BLASLONG nthreads) {
 
   blas_queue_t queue[MAX_CPU_NUMBER];
 
diff --git a/driver/level3/gemm_thread_n.c b/driver/level3/gemm_thread_n.c
index 9668841bb..cd89d89d2 100644
--- a/driver/level3/gemm_thread_n.c
+++ b/driver/level3/gemm_thread_n.c
@@ -40,7 +40,11 @@
 #include <stdlib.h>
 #include "common.h"
 
-int CNAME(int mode, blas_arg_t *arg, BLASLONG *range_m, BLASLONG *range_n, int (*function)(), void *sa, void *sb, BLASLONG nthreads) {
+int
+#ifndef C_MSVC
+__attribute__((visibility("hidden")))
+#endif
+	CNAME(int mode, blas_arg_t *arg, BLASLONG *range_m, BLASLONG *range_n, int (*function)(), void *sa, void *sb, BLASLONG nthreads) {
 
   blas_queue_t queue[MAX_CPU_NUMBER];
   BLASLONG range[MAX_CPU_NUMBER + 1];
diff --git a/driver/level3/gemm_thread_variable.c b/driver/level3/gemm_thread_variable.c
index 162a75f70..587698028 100644
--- a/driver/level3/gemm_thread_variable.c
+++ b/driver/level3/gemm_thread_variable.c
@@ -40,7 +40,11 @@
 #include <stdlib.h>
 #include "common.h"
 
-int CNAME(int mode,
+int
+#ifndef C_MSVC
+__attribute__((visibility("hidden")))
+#endif
+	CNAME(int mode,
 	  blas_arg_t *arg, BLASLONG *range_m, BLASLONG *range_n,
 	  int (*function)(), void *sa, void *sb, BLASLONG divM, BLASLONG divN) {
 
diff --git a/driver/level3/level3.c b/driver/level3/level3.c
index 4a8e193be..3f9d02330 100644
--- a/driver/level3/level3.c
+++ b/driver/level3/level3.c
@@ -169,7 +169,11 @@
 #define STOP_RPCC(COUNTER)
 #endif
 
-int CNAME(blas_arg_t *args, BLASLONG *range_m, BLASLONG *range_n,
+int
+#ifndef C_MSVC
+__attribute__((visibility("hidden")))
+#endif
+	CNAME(blas_arg_t *args, BLASLONG *range_m, BLASLONG *range_n,
 		  XFLOAT *sa, XFLOAT *sb, BLASLONG dummy){
   BLASLONG k, lda, ldb, ldc;
   FLOAT *alpha, *beta;
diff --git a/driver/level3/level3_gemm3m_thread.c b/driver/level3/level3_gemm3m_thread.c
index 39824fc5a..d22dab1dd 100644
--- a/driver/level3/level3_gemm3m_thread.c
+++ b/driver/level3/level3_gemm3m_thread.c
@@ -1007,7 +1007,11 @@ EnterCriticalSection((PCRITICAL_SECTION)&level3_lock);
   return 0;
 }
 
-int CNAME(blas_arg_t *args, BLASLONG *range_m, BLASLONG *range_n, FLOAT *sa, FLOAT *sb, BLASLONG mypos){
+int
+#ifndef C_MSVC
+__attribute__((visibility("hidden")))
+#endif
+	CNAME(blas_arg_t *args, BLASLONG *range_m, BLASLONG *range_n, FLOAT *sa, FLOAT *sb, BLASLONG mypos){
 
   BLASLONG m = args -> m;
   // BLASLONG n = args -> n;
diff --git a/driver/level3/level3_syr2k.c b/driver/level3/level3_syr2k.c
index 3a2f86972..1affe5724 100644
--- a/driver/level3/level3_syr2k.c
+++ b/driver/level3/level3_syr2k.c
@@ -102,7 +102,11 @@
 #define LDC	args -> ldc
 #endif
 
-int CNAME(blas_arg_t *args, BLASLONG *range_m, BLASLONG *range_n, FLOAT *sa, FLOAT *sb, BLASLONG dummy) {
+int
+#ifndef C_MSVC
+__attribute__((visibility("hidden")))
+#endif
+	CNAME(blas_arg_t *args, BLASLONG *range_m, BLASLONG *range_n, FLOAT *sa, FLOAT *sb, BLASLONG dummy) {
 
   BLASLONG m_from, m_to, n_from, n_to, k, lda, ldb, ldc;
   FLOAT *a, *b, *c, *alpha, *beta;
diff --git a/driver/level3/level3_syrk.c b/driver/level3/level3_syrk.c
index 7f9fef479..2d75c1fda 100644
--- a/driver/level3/level3_syrk.c
+++ b/driver/level3/level3_syrk.c
@@ -98,7 +98,11 @@
 #define STOP_RPCC(COUNTER)
 #endif
 
-int CNAME(blas_arg_t *args, BLASLONG *range_m, BLASLONG *range_n, FLOAT *sa, FLOAT *sb, BLASLONG dummy) {
+int
+#ifndef C_MSVC
+__attribute__((visibility("hidden")))
+#endif
+	CNAME(blas_arg_t *args, BLASLONG *range_m, BLASLONG *range_n, FLOAT *sa, FLOAT *sb, BLASLONG dummy) {
 
   BLASLONG m_from, m_to, n_from, n_to, k, lda, ldc;
   FLOAT *a, *c, *alpha, *beta;
diff --git a/driver/level3/level3_syrk_threaded.c b/driver/level3/level3_syrk_threaded.c
index d7dcd68a3..806d0a18f 100644
--- a/driver/level3/level3_syrk_threaded.c
+++ b/driver/level3/level3_syrk_threaded.c
@@ -505,7 +505,11 @@ static int inner_thread(blas_arg_t *args, BLASLONG *range_m, BLASLONG *range_n,
   return 0;
 }
 
-int CNAME(blas_arg_t *args, BLASLONG *range_m, BLASLONG *range_n, FLOAT *sa, FLOAT *sb, BLASLONG mypos){
+int
+#ifndef C_MSVC
+__attribute__((visibility("hidden")))
+#endif
+	CNAME(blas_arg_t *args, BLASLONG *range_m, BLASLONG *range_n, FLOAT *sa, FLOAT *sb, BLASLONG mypos){
 
   blas_arg_t newarg;
 
diff --git a/driver/level3/level3_thread.c b/driver/level3/level3_thread.c
index dfc7107b8..9b51adb9d 100644
--- a/driver/level3/level3_thread.c
+++ b/driver/level3/level3_thread.c
@@ -731,7 +731,11 @@ EnterCriticalSection((PCRITICAL_SECTION)&level3_lock);
   return 0;
 }
 
-int CNAME(blas_arg_t *args, BLASLONG *range_m, BLASLONG *range_n, IFLOAT *sa, IFLOAT *sb, BLASLONG mypos){
+int
+#ifndef C_MSVC
+__attribute__((visibility("hidden")))
+#endif
+	CNAME(blas_arg_t *args, BLASLONG *range_m, BLASLONG *range_n, IFLOAT *sa, IFLOAT *sb, BLASLONG mypos){
 
   BLASLONG m = args -> m;
   BLASLONG n = args -> n;
diff --git a/driver/level3/syr2k_kernel.c b/driver/level3/syr2k_kernel.c
index f9e4a4cda..695b58381 100644
--- a/driver/level3/syr2k_kernel.c
+++ b/driver/level3/syr2k_kernel.c
@@ -39,7 +39,11 @@
 #include <stdio.h>
 #include "common.h"
 
-int CNAME(BLASLONG m, BLASLONG n, BLASLONG k, FLOAT alpha_r,
+int
+#ifndef C_MSVC
+__attribute__((visibility("hidden")))
+#endif
+	CNAME(BLASLONG m, BLASLONG n, BLASLONG k, FLOAT alpha_r,
 #ifdef COMPLEX
 	   FLOAT alpha_i,
 #endif
diff --git a/driver/level3/syrk_kernel.c b/driver/level3/syrk_kernel.c
index 6f224d05d..55c53c5af 100644
--- a/driver/level3/syrk_kernel.c
+++ b/driver/level3/syrk_kernel.c
@@ -53,7 +53,11 @@
 #endif
 #endif
 
-int CNAME(BLASLONG m, BLASLONG n, BLASLONG k, FLOAT alpha_r,
+int
+#ifndef C_MSVC
+__attribute__((visibility("hidden")))
+#endif
+	CNAME(BLASLONG m, BLASLONG n, BLASLONG k, FLOAT alpha_r,
 #ifdef COMPLEX
 	   FLOAT alpha_i,
 #endif
diff --git a/driver/level3/syrk_thread.c b/driver/level3/syrk_thread.c
index 12808afd5..dfb4725ef 100644
--- a/driver/level3/syrk_thread.c
+++ b/driver/level3/syrk_thread.c
@@ -41,7 +41,11 @@
 #include <math.h>
 #include "common.h"
 
-int CNAME(int mode, blas_arg_t *arg, BLASLONG *range_m, BLASLONG *range_n, int (*function)(), void *sa, void *sb, BLASLONG nthreads) {
+int
+#ifndef C_MSVC
+__attribute__((visibility("hidden")))
+#endif
+	CNAME(int mode, blas_arg_t *arg, BLASLONG *range_m, BLASLONG *range_n, int (*function)(), void *sa, void *sb, BLASLONG nthreads) {
 
   blas_queue_t queue[MAX_CPU_NUMBER];
   BLASLONG range[MAX_CPU_NUMBER + 1];
diff --git a/driver/level3/trmm_L.c b/driver/level3/trmm_L.c
index e25ea7afe..e1c639d62 100644
--- a/driver/level3/trmm_L.c
+++ b/driver/level3/trmm_L.c
@@ -62,7 +62,11 @@ const static FLOAT dp1 = 1.;
 #define STOP_RPCC(COUNTER)
 #endif
 
-int CNAME(blas_arg_t *args, BLASLONG *range_m, BLASLONG *range_n, FLOAT *sa, FLOAT *sb, BLASLONG dummy) {
+int
+#ifndef C_MSVC
+__attribute__((visibility("hidden")))
+#endif
+	CNAME(blas_arg_t *args, BLASLONG *range_m, BLASLONG *range_n, FLOAT *sa, FLOAT *sb, BLASLONG dummy) {
 
   BLASLONG m, n, lda, ldb;
   FLOAT *beta, *a, *b;
diff --git a/driver/level3/trmm_R.c b/driver/level3/trmm_R.c
index ab9cdfae8..00ef2ad0d 100644
--- a/driver/level3/trmm_R.c
+++ b/driver/level3/trmm_R.c
@@ -62,7 +62,11 @@ const static FLOAT dp1 = 1.;
 #define GEMM_R 16
 #endif
 
-int CNAME(blas_arg_t *args, BLASLONG *range_m, BLASLONG *range_n, FLOAT *sa, FLOAT *sb, BLASLONG dummy) {
+int
+#ifndef C_MSVC
+__attribute__((visibility("hidden")))
+#endif
+	CNAME(blas_arg_t *args, BLASLONG *range_m, BLASLONG *range_n, FLOAT *sa, FLOAT *sb, BLASLONG dummy) {
 
   BLASLONG m, n, lda, ldb;
   FLOAT *beta, *a, *b;
diff --git a/driver/level3/trsm_L.c b/driver/level3/trsm_L.c
index d842efa93..89f884662 100644
--- a/driver/level3/trsm_L.c
+++ b/driver/level3/trsm_L.c
@@ -68,7 +68,11 @@ const static FLOAT dm1 = -1.;
 #define GEMM_R 1600
 #endif
 
-int CNAME(blas_arg_t *args, BLASLONG *range_m, BLASLONG *range_n, FLOAT *sa, FLOAT *sb, BLASLONG dummy) {
+int
+#ifndef C_MSVC
+__attribute__((visibility("hidden")))
+#endif
+	CNAME(blas_arg_t *args, BLASLONG *range_m, BLASLONG *range_n, FLOAT *sa, FLOAT *sb, BLASLONG dummy) {
 
   BLASLONG m, n, lda, ldb;
   FLOAT *beta, *a, *b;
diff --git a/driver/level3/trsm_R.c b/driver/level3/trsm_R.c
index f76a8f7f3..6e49c4f12 100644
--- a/driver/level3/trsm_R.c
+++ b/driver/level3/trsm_R.c
@@ -68,7 +68,11 @@ const static FLOAT dm1 = -1.;
 #define GEMM_R 24
 #endif
 
-int CNAME(blas_arg_t *args, BLASLONG *range_m, BLASLONG *range_n, FLOAT *sa, FLOAT *sb, BLASLONG dummy) {
+int
+#ifndef C_MSVC
+__attribute__((visibility("hidden")))
+#endif
+	CNAME(blas_arg_t *args, BLASLONG *range_m, BLASLONG *range_n, FLOAT *sa, FLOAT *sb, BLASLONG dummy) {
 
   BLASLONG m, n, lda, ldb;
   FLOAT *beta, *a, *b;
diff --git a/driver/level3/zher2k_kernel.c b/driver/level3/zher2k_kernel.c
index f67e9bd76..bc9fbcab6 100644
--- a/driver/level3/zher2k_kernel.c
+++ b/driver/level3/zher2k_kernel.c
@@ -47,7 +47,11 @@
 #define GEMM_KERNEL_B0	GEMM_KERNEL_L_B0
 #endif
 
-int CNAME(BLASLONG m, BLASLONG n, BLASLONG k, FLOAT alpha_r, FLOAT alpha_i,
+int
+#ifndef C_MSVC
+__attribute__((visibility("hidden")))
+#endif
+	CNAME(BLASLONG m, BLASLONG n, BLASLONG k, FLOAT alpha_r, FLOAT alpha_i,
 	   FLOAT *a, FLOAT *b, FLOAT *c, BLASLONG ldc, BLASLONG offset, int flag){
 
   BLASLONG i, j;
diff --git a/driver/level3/zherk_beta.c b/driver/level3/zherk_beta.c
index 6867cc010..5e2ccbc7b 100644
--- a/driver/level3/zherk_beta.c
+++ b/driver/level3/zherk_beta.c
@@ -40,7 +40,11 @@
 #include <ctype.h>
 #include "common.h"
 
-int CNAME(BLASLONG dummy1, BLASLONG n,  BLASLONG dummy2, FLOAT alpha_r, FLOAT alpha_i,
+int
+#ifndef C_MSVC
+__attribute__((visibility("hidden")))
+#endif
+	CNAME(BLASLONG dummy1, BLASLONG n,  BLASLONG dummy2, FLOAT alpha_r, FLOAT alpha_i,
 	  FLOAT *dummy3, BLASLONG dummy4, FLOAT *dummy5, BLASLONG dummy6,
 	  FLOAT *c, BLASLONG ldc,
 	  FLOAT *dummy7, FLOAT *dummy8, BLASLONG from, BLASLONG to){
diff --git a/driver/level3/zherk_kernel.c b/driver/level3/zherk_kernel.c
index cebcc16db..a6498df65 100644
--- a/driver/level3/zherk_kernel.c
+++ b/driver/level3/zherk_kernel.c
@@ -47,7 +47,11 @@
 #define GEMM_KERNEL_B0	GEMM_KERNEL_L_B0
 #endif
 
-int CNAME(BLASLONG m, BLASLONG n, BLASLONG k, FLOAT alpha_r,
+int
+#ifndef C_MSVC
+__attribute__((visibility("hidden")))
+#endif
+	CNAME(BLASLONG m, BLASLONG n, BLASLONG k, FLOAT alpha_r,
 	   FLOAT *a, FLOAT *b, FLOAT *c, BLASLONG ldc, BLASLONG offset){
 
   BLASLONG i, j;
diff --git a/driver/level3/zsyrk_beta.c b/driver/level3/zsyrk_beta.c
index 3787e31b5..3e7734e40 100644
--- a/driver/level3/zsyrk_beta.c
+++ b/driver/level3/zsyrk_beta.c
@@ -40,7 +40,11 @@
 #include <ctype.h>
 #include "common.h"
 
-int CNAME(BLASLONG dummy1, BLASLONG n,  BLASLONG dummy2, FLOAT alpha_r, FLOAT alpha_i,
+int
+#ifndef C_MSVC
+__attribute__((visibility("hidden")))
+#endif
+	CNAME(BLASLONG dummy1, BLASLONG n,  BLASLONG dummy2, FLOAT alpha_r, FLOAT alpha_i,
 	  FLOAT *dummy3, BLASLONG dummy4, FLOAT *dummy5, BLASLONG dummy6,
 	  FLOAT *c, BLASLONG ldc,
 	  FLOAT *dummy7, FLOAT *dummy8, BLASLONG from, BLASLONG to){