diff --git a/Makefile.system b/Makefile.system
index 3c1648dc7..b3968d739 100644
--- a/Makefile.system
+++ b/Makefile.system
@@ -384,6 +384,11 @@ GCCMINORVERSIONGTEQ4 := $(shell expr `$(CC) $(GCCDUMPVERSION_PARAM) | cut -f2 -d
 GCCMINORVERSIONGTEQ7 := $(shell expr `$(CC) $(GCCDUMPVERSION_PARAM) | cut -f2 -d.` \>= 7)
 endif
 
+ifeq ($(C_COMPILER), CLANG)
+CLANGVERSIONGTEQ9 := $(shell expr `$(CC) -dumpversion | cut -f1 -d.` \>= 9)
+CLANGVERSIONGTEQ12 := $(shell expr `$(CC) -dumpversion | cut -f1 -d.` \>= 12)
+endif
+
 #
 #  OS dependent settings
 #
diff --git a/Makefile.x86_64 b/Makefile.x86_64
index 7ab331b1f..702447ace 100644
--- a/Makefile.x86_64
+++ b/Makefile.x86_64
@@ -75,18 +75,31 @@ endif
 ifeq ($(CORE), COOPERLAKE)
 ifndef NO_AVX512
 ifeq ($(C_COMPILER), GCC)
-# cooperlake support was added in 10.1
-ifeq ($(GCCVERSIONGTEQ10)$(GCCMINORVERSIONGTEQ1), 11)
-CCOMMON_OPT += -march=cooperlake
-ifneq ($(F_COMPILER), NAG)
-FCOMMON_OPT += -march=cooperlake
-endif
-else  # gcc not support, fallback to avx512
-CCOMMON_OPT += -march=skylake-avx512
-ifneq ($(F_COMPILER), NAG)
-FCOMMON_OPT += -march=skylake-avx512
-endif
-endif
+ # cooperlake support was added in 10.1
+ ifeq ($(GCCVERSIONGTEQ10)$(GCCMINORVERSIONGTEQ1), 11)
+  CCOMMON_OPT += -march=cooperlake
+  ifneq ($(F_COMPILER), NAG)
+   FCOMMON_OPT += -march=cooperlake
+  endif
+ else  # gcc not support, fallback to avx512
+  CCOMMON_OPT += -march=skylake-avx512
+  ifneq ($(F_COMPILER), NAG)
+   FCOMMON_OPT += -march=skylake-avx512
+  endif
+ endif
+else ifeq ($(C_COMPILER), CLANG)
+ # cooperlake support was added in clang 9
+ ifeq ($(CLANGVERSIONGTEQ9), 1)
+  CCOMMON_OPT += -march=cooperlake
+  ifneq ($(F_COMPILER), NAG)
+   FCOMMON_OPT += -march=cooperlake
+  endif
+ else  # not supported in clang, fallback to avx512
+  CCOMMON_OPT += -march=skylake-avx512
+  ifneq ($(F_COMPILER), NAG)
+   FCOMMON_OPT += -march=skylake-avx512
+  endif
+ endif
 endif
 ifeq ($(OSNAME), CYGWIN_NT)
 CCOMMON_OPT += -fno-asynchronous-unwind-tables
@@ -104,18 +117,31 @@ endif
 ifeq ($(CORE), SAPPHIRERAPIDS)
 ifndef NO_AVX512
 ifeq ($(C_COMPILER), GCC)
-# sapphire rapids support was added in 11
-ifeq ($(GCCVERSIONGTEQ11), 1)
-CCOMMON_OPT += -march=sapphirerapids
-ifneq ($(F_COMPILER), NAG)
-FCOMMON_OPT += -march=sapphirerapids
-endif
-else  # gcc not support, fallback to avx512
-CCOMMON_OPT += -march=skylake-avx512
-ifneq ($(F_COMPILER), NAG)
-FCOMMON_OPT += -march=skylake-avx512
-endif
-endif
+ # sapphire rapids support was added in 11
+ ifeq ($(GCCVERSIONGTEQ11), 1)
+  CCOMMON_OPT += -march=sapphirerapids
+  ifneq ($(F_COMPILER), NAG)
+   FCOMMON_OPT += -march=sapphirerapids
+  endif
+ else  # gcc not support, fallback to avx512
+  CCOMMON_OPT += -march=skylake-avx512
+  ifneq ($(F_COMPILER), NAG)
+   FCOMMON_OPT += -march=skylake-avx512
+  endif
+ endif
+else ifeq ($(C_COMPILER), CLANG)
+ # cooperlake support was added in clang 12
+ ifeq ($(CLANGVERSIONGTEQ12), 1)
+  CCOMMON_OPT += -march=cooperlake
+  ifneq ($(F_COMPILER), NAG)
+   FCOMMON_OPT += -march=cooperlake
+  endif
+ else  # not supported in clang, fallback to avx512
+  CCOMMON_OPT += -march=skylake-avx512
+  ifneq ($(F_COMPILER), NAG)
+   FCOMMON_OPT += -march=skylake-avx512
+  endif
+ endif
 endif
 ifeq ($(OSNAME), CYGWIN_NT)
 CCOMMON_OPT += -fno-asynchronous-unwind-tables
diff --git a/kernel/Makefile b/kernel/Makefile
index d426a1bdb..795f25eec 100644
--- a/kernel/Makefile
+++ b/kernel/Makefile
@@ -33,7 +33,7 @@ endif
 ifdef TARGET_CORE
 ifeq ($(TARGET_CORE), SAPPHIRERAPIDS)
  override CFLAGS += -DBUILD_KERNEL -DTABLE_NAME=gotoblas_$(TARGET_CORE)
- ifeq ($(GCCVERSIONGTEQ11), 1) 
+ ifeq (1, $(filter 1,$(GCCVERSIONGTEQ11) $(CLANGVERSIONGTEQ12)))
   override CFLAGS += -march=sapphirerapids
  else 
   override CFLAGS += -march=skylake-avx512 -mavx512f
@@ -48,7 +48,7 @@ ifeq ($(TARGET_CORE), SAPPHIRERAPIDS)
  endif
 else ifeq ($(TARGET_CORE), COOPERLAKE)
  override CFLAGS += -DBUILD_KERNEL -DTABLE_NAME=gotoblas_$(TARGET_CORE)
- ifeq ($(GCCVERSIONGTEQ10), 1) 
+ ifeq (1, $(filter 1,$(GCCVERSIONGTEQ10) $(CLANGVERSIONGTEQ9)))
   override CFLAGS += -march=cooperlake
  else 
   override CFLAGS += -march=skylake-avx512 -mavx512f