fix missing endif() and add AppleClang options for M4

Author: martin-frbg

cmake/cc.cmake

@@ -318,6 +318,7 @@ if (${CORE} STREQUAL ARMV9SME)
 	if (${OSNAME} STREQUAL Windows AND ${CMAKE_C_COMPILER_ID} MATCHES "Clang" )
 	set (CCOMMON_OPT "${CCOMMON_OPT} --aarch64-stack-hazard-size=0")
     endif ()
+	endif ()
   endif ()
 endif ()
 
@@ -326,8 +327,12 @@ if (${CORE} STREQUAL VORTEXM4)
     if (${CMAKE_C_COMPILER_ID} STREQUAL "NVC" AND NOT NO_SVE)
 	    set (CCOMMON_OPT  "${CCOMMON_OPT} -tp=host")
     else ()
-    set (CCOMMON_OPT "${CCOMMON_OPT} -march=armv8.4-a+sme")
-    endif ()
+	  if (${CMAKE_C_COMPILER_ID} STREQUAL "AppleClang")
+        set (CCOMMON_OPT "${CCOMMON_OPT} -march=armv8.4-a+sme -mcpu=apple-m4")
+	  else ()
+	    set (CCOMMON_OPT "${CCOMMON_OPT} -march=armv8.4-a -mcpu=apple-m4")
+      endif ()
+	endif ()
   endif ()
 endif ()