diff --git a/Makefile.x86_64 b/Makefile.x86_64
index e793a1c2f..8a3fc4eae 100644
--- a/Makefile.x86_64
+++ b/Makefile.x86_64
@@ -12,6 +12,10 @@ ifdef HAVE_SSE3
 ifndef DYNAMIC_ARCH
 CCOMMON_OPT += -msse3
 FCOMMON_OPT += -msse3
+ifdef HAVE_SSSE3
+CCOMMON_OPT += -mssse3
+FCOMMON_OPT += -mssse3
+endif
 endif
 endif
 
@@ -60,7 +64,7 @@ endif
 endif
 endif
 
-ifeq ($(CORE), HASWELL)
+ifeq ($(CORE), $(filter $(CORE), HASWELL ZEN SKYLAKEX COOPERLAKE))
 ifndef DYNAMIC_ARCH
 ifndef NO_AVX2
 ifeq ($(C_COMPILER), GCC)
diff --git a/cmake/cc.cmake b/cmake/cc.cmake
index c490dd9ab..9f5cc1bf7 100644
--- a/cmake/cc.cmake
+++ b/cmake/cc.cmake
@@ -109,10 +109,25 @@ if (${CORE} STREQUAL "COOPERLAKE")
     if (NOT NO_AVX512)
       execute_process(COMMAND ${CMAKE_C_COMPILER} -dumpversion OUTPUT_VARIABLE GCC_VERSION)
       if (${GCC_VERSION} VERSION_GREATER 10.1 OR ${GCC_VERSION} VERSION_EQUAL 10.1)
-        set (CCOMMON_OPT = "${CCOMMON_OPT} -march=cooperlake")
+        set (CCOMMON_OPT  "${CCOMMON_OPT} -march=cooperlake")
       else ()
         set (CCOMMON_OPT "${CCOMMON_OPT} -march=skylake-avx512")
       endif()  
     endif ()
   endif ()
 endif ()
+
+if (NOT DYNAMIC_ARCH)
+	if (HAVE_AVX2)
+        set (CCOMMON_OPT  "${CCOMMON_OPT} -mavx2")
+	endif ()
+	if (HAVE_AVX)
+        set (CCOMMON_OPT  "${CCOMMON_OPT} -mavx")
+	endif ()
+	if (HAVE_SSE3)
+        set (CCOMMON_OPT  "${CCOMMON_OPT} -msse3")
+	endif ()
+	if (HAVE_SSSE3)
+        set (CCOMMON_OPT  "${CCOMMON_OPT} -mssse3")
+	endif ()
+endif()
diff --git a/kernel/Makefile b/kernel/Makefile
index 290fb2afe..c95c15f56 100644
--- a/kernel/Makefile
+++ b/kernel/Makefile
@@ -8,6 +8,9 @@ include $(TOPDIR)/Makefile.system
 ifdef HAVE_SSE3
 CFLAGS += -msse3
 endif
+ifdef HAVE_SSSE3
+CFLAGS += -mssse3
+endif
 
 ifeq ($(C_COMPILER), GCC)
 GCCVERSIONGTEQ9 := $(shell expr `$(CC) -dumpversion | cut -f1 -d.` \>= 9)
@@ -41,8 +44,8 @@ ifdef NO_AVX2
 endif
 
 ifdef TARGET_CORE
-	ifeq ($(TARGET_CORE), $(filter $(TARGET_CORE),PRESCOTT CORE2 PENRYN DUNNINGTON ATOM NANO NEHALEM BARCELONA BOBCAT BULLDOZER PILEDRIVER EXCAVATOR STEAMROLLER OPTERON_SSE3))
-	override CFLAGS += -msse3
+	ifeq ($(TARGET_CORE), $(filter $(TARGET_CORE),PRESCOTT CORE2 PENRYN DUNNINGTON ATOM NANO SANDYBRIDGE HASWELL NEHALEM ZEN BARCELONA BOBCAT BULLDOZER PILEDRIVER EXCAVATOR STEAMROLLER OPTERON_SSE3))
+	override CFLAGS += -msse3 -mssse3
 endif
 ifeq ($(TARGET_CORE), COOPERLAKE)
  override CFLAGS += -DBUILD_KERNEL -DTABLE_NAME=gotoblas_$(TARGET_CORE)
diff --git a/kernel/x86_64/KERNEL b/kernel/x86_64/KERNEL
index 4f110f0bf..855e1ff8c 100644
--- a/kernel/x86_64/KERNEL
+++ b/kernel/x86_64/KERNEL
@@ -259,12 +259,8 @@ SNRM2KERNEL = nrm2_sse.S
 endif
 
 ifndef DNRM2KERNEL
-ifeq ($(OSNAME),WINNT)
-DNRM2KERNEL = ../arm/nrm2.c
-else
 DNRM2KERNEL = nrm2.S
 endif
-endif
 
 ifndef QNRM2KERNEL
 QNRM2KERNEL = nrm2.S
@@ -275,12 +271,8 @@ CNRM2KERNEL = znrm2_sse.S
 endif
 
 ifndef ZNRM2KERNEL
-ifeq ($(OSNAME),WINNT)
-ZNRM2KERNEL = ../arm/znrm2.c
-else
 ZNRM2KERNEL = znrm2.S
 endif
-endif
 
 ifndef XNRM2KERNEL
 XNRM2KERNEL = znrm2.S
@@ -486,3 +478,6 @@ XTRSMKERNEL_RN	=  xtrsm_kernel_LT_1x1.S
 XTRSMKERNEL_RT	=  xtrsm_kernel_LT_1x1.S
 
 XGEMM3MKERNEL    =  xgemm3m_kernel_2x2.S
+
+SSUMKERNEL = ../arm/sum.c
+DSUMKERNEL = ../arm/sum.c