diff --git a/azure-pipelines.yml b/azure-pipelines.yml
index 1102bf0f5..8236c6cc3 100644
--- a/azure-pipelines.yml
+++ b/azure-pipelines.yml
@@ -157,6 +157,14 @@ jobs:
       brew update
       make USE_THREADS=0 CC=gcc-10 FC=gfortran-10
      
+- job: OSX_GCC12
+  pool:
+     vmImage: 'macOS-latest'
+  steps:   
+  - script: |
+      brew update
+      make CC=gcc-12 FC=gfortran-12
+     
 - job: OSX_OpenMP_Clang
   pool:
      vmImage: 'macOS-10.15'
diff --git a/kernel/x86_64/sgemv_n_4.c b/kernel/x86_64/sgemv_n_4.c
index 621ddc622..c9681fa8b 100644
--- a/kernel/x86_64/sgemv_n_4.c
+++ b/kernel/x86_64/sgemv_n_4.c
@@ -25,9 +25,12 @@ OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
 USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *****************************************************************************/
 
-
 #include "common.h"
 
+#if (defined(OS_DARWIN) || defined(OS_WINDOWS)) && (defined(__GNUC__) && __GNUC__ > 11) 
+#pragma GCC optimize("no-tree-vectorize")
+#endif
+
 
 #if defined(BULLDOZER) || defined(PILEDRIVER) || defined(STEAMROLLER)  || defined(EXCAVATOR)
 #include "sgemv_n_microk_bulldozer-4.c"
diff --git a/kernel/x86_64/sgemv_t_4.c b/kernel/x86_64/sgemv_t_4.c
index 0be2c7e97..07aa51503 100644
--- a/kernel/x86_64/sgemv_t_4.c
+++ b/kernel/x86_64/sgemv_t_4.c
@@ -25,9 +25,12 @@ OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
 USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *****************************************************************************/
 
-
 #include "common.h"
 
+#if (defined(OS_DARWIN) || defined(OS_WINDOWS)) && (defined(__GNUC__) && __GNUC__ > 11) 
+#pragma GCC optimize("no-tree-vectorize")
+#endif
+
 #if defined(NEHALEM)
 #include "sgemv_t_microk_nehalem-4.c"
 #elif defined(BULLDOZER) || defined(PILEDRIVER) || defined(STEAMROLLER)  || defined(EXCAVATOR)
diff --git a/kernel/x86_64/ssymv_L.c b/kernel/x86_64/ssymv_L.c
index 29d6a9958..45914daf5 100644
--- a/kernel/x86_64/ssymv_L.c
+++ b/kernel/x86_64/ssymv_L.c
@@ -25,9 +25,12 @@ OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
 USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *****************************************************************************/
 
-
 #include "common.h"
 
+#if (defined(OS_DARWIN) || defined(OS_WINDOWS)) && (defined(__GNUC__) && __GNUC__ > 11) 
+#pragma GCC optimize("no-tree-vectorize")
+#endif
+
 #if defined(BULLDOZER) || defined(PILEDRIVER) || defined(STEAMROLLER)  || defined(EXCAVATOR)
 #include "ssymv_L_microk_bulldozer-2.c"
 #elif defined(NEHALEM)
diff --git a/kernel/x86_64/ssymv_U.c b/kernel/x86_64/ssymv_U.c
index 02bbc1c64..26e5ca7e9 100644
--- a/kernel/x86_64/ssymv_U.c
+++ b/kernel/x86_64/ssymv_U.c
@@ -25,9 +25,12 @@ OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
 USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *****************************************************************************/
 
-
 #include "common.h"
 
+#if (defined(OS_DARWIN) || defined(OS_WINDOWS)) && (defined(__GNUC__) && __GNUC__ > 11) 
+#pragma GCC optimize("no-tree-vectorize")
+#endif
+
 
 #if defined(BULLDOZER) || defined(PILEDRIVER) || defined(STEAMROLLER)  || defined(EXCAVATOR)
 #include "ssymv_U_microk_bulldozer-2.c"
diff --git a/kernel/x86_64/zdot.c b/kernel/x86_64/zdot.c
index c52575d07..27397ccfa 100644
--- a/kernel/x86_64/zdot.c
+++ b/kernel/x86_64/zdot.c
@@ -25,9 +25,11 @@ OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
 USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *****************************************************************************/
 
-
 #include "common.h"
 
+#if (defined(OS_DARWIN) || defined(OS_WINDOWS)) && (defined(__GNUC__) && __GNUC__ > 11) 
+#pragma GCC optimize("no-tree-vectorize")
+#endif
 
 #if defined(BULLDOZER) 
 #include "zdot_microk_bulldozer-2.c"
diff --git a/kernel/x86_64/zgemv_n_4.c b/kernel/x86_64/zgemv_n_4.c
index 2d6866a78..8fc960610 100644
--- a/kernel/x86_64/zgemv_n_4.c
+++ b/kernel/x86_64/zgemv_n_4.c
@@ -25,10 +25,11 @@ OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
 USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *****************************************************************************/
 
-#include <stdlib.h>
-#include <stdio.h>
 #include "common.h"
 
+#if (defined(OS_DARWIN) || defined(OS_WINDOWS)) && (defined(__GNUC__) && __GNUC__ > 11) 
+#pragma GCC optimize("no-tree-vectorize")
+#endif
 
 #if defined(HASWELL) || defined(ZEN) || defined (SKYLAKEX) || defined (COOPERLAKE) || defined (SAPPHIRERAPIDS)
 #include "zgemv_n_microk_haswell-4.c"
@@ -231,10 +232,6 @@ int CNAME(BLASLONG m, BLASLONG n, BLASLONG dummy1, FLOAT alpha_r,FLOAT alpha_i,
 	FLOAT xbuffer[8],*ybuffer;
 
 
-#if 0
-printf("%s %d %d %.16f %.16f %d %d %d\n","zgemv_n",m,n,alpha_r,alpha_i,lda,inc_x,inc_y);
-#endif
-
 	if ( m < 1 ) return(0);
 	if ( n < 1 ) return(0);
 
diff --git a/kernel/x86_64/zgemv_t_4.c b/kernel/x86_64/zgemv_t_4.c
index c2791e0f3..63c8b11a4 100644
--- a/kernel/x86_64/zgemv_t_4.c
+++ b/kernel/x86_64/zgemv_t_4.c
@@ -25,9 +25,11 @@ OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
 USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *****************************************************************************/
 
-
 #include "common.h"
 
+#if (defined(OS_DARWIN) || defined(OS_WINDOWS)) && (defined(__GNUC__) && __GNUC__ > 11) 
+#pragma GCC optimize("no-tree-vectorize")
+#endif
 
 #if defined(BULLDOZER) || defined(PILEDRIVER) || defined(STEAMROLLER)  || defined(EXCAVATOR)
 #include "zgemv_t_microk_bulldozer-4.c"