diff --git a/Makefile.system b/Makefile.system
index 52d3e2cdc..ca302a98a 100644
--- a/Makefile.system
+++ b/Makefile.system
@@ -93,6 +93,12 @@ endif
 ifdef TARGET
 GETARCH_FLAGS := -DFORCE_$(TARGET)
 GETARCH_FLAGS += -DUSER_TARGET
+ifeq ($(TARGET), GENERIC)
+ifeq ($(DYNAMIC_ARCH), 1)
+override NO_EXPRECISION=1
+export NO_EXPRECiSION
+endif
+endif
 endif
 
 # Force fallbacks for 32bit
diff --git a/cmake/os.cmake b/cmake/os.cmake
index c644bc3f7..e24059dd5 100644
--- a/cmake/os.cmake
+++ b/cmake/os.cmake
@@ -84,6 +84,14 @@ if (X86)
   set(NO_EXPRECISION 1)
 endif ()
 
+if (DYNAMIC_ARCH)
+if (TARGET)
+if (${TARGET} STREQUAL "GENERIC")
+  set(NO_EXPRECISION 1)
+endif ()
+endif ()
+endif ()
+
 if (UTEST_CHECK)
   set(CCOMMON_OPT "${CCOMMON_OPT} -DUTEST_CHECK")
   set(SANITY_CHECK 1)
diff --git a/cmake/prebuild.cmake b/cmake/prebuild.cmake
index 3e38abbf5..b1b4c501a 100644
--- a/cmake/prebuild.cmake
+++ b/cmake/prebuild.cmake
@@ -139,6 +139,36 @@ if (DEFINED CORE AND CMAKE_CROSSCOMPILING AND NOT (${HOST_OS} STREQUAL "WINDOWSS
       set(CGEMM3M_UNROLL_N 4)
       set(ZGEMM3M_UNROLL_M 4)
       set(ZGEMM3M_UNROLL_N 4)
+  elseif ("${TCORE}" STREQUAL "BARCELONA")
+    file(APPEND ${TARGET_CONF_TEMP}
+      "#define HAVE_SSE3\n")
+  elseif ("${TCORE}" STREQUAL "STEAMROLLER")
+    file(APPEND ${TARGET_CONF_TEMP}
+      "#define HAVE_SSE3\n")
+  elseif ("${TCORE}" STREQUAL "EXCAVATOR")
+    file(APPEND ${TARGET_CONF_TEMP}
+      "#define HAVE_SSE3\n")
+  elseif ("${TCORE}" STREQUAL "NEHALEM")
+    file(APPEND ${TARGET_CONF_TEMP}
+      "#define HAVE_SSE3\n")
+  elseif ("${TCORE}" STREQUAL "PRESCOTT")
+    file(APPEND ${TARGET_CONF_TEMP}
+      "#define HAVE_SSE3\n")
+  elseif ("${TCORE}" STREQUAL "SANDYBRIDGE")
+    file(APPEND ${TARGET_CONF_TEMP}
+      "#define HAVE_AVX\n")
+  elseif ("${TCORE}" STREQUAL "HASWELL")
+    file(APPEND ${TARGET_CONF_TEMP}
+      "#define HAVE_AVX2\n")
+  elseif ("${TCORE}" STREQUAL "ZEN")
+    file(APPEND ${TARGET_CONF_TEMP}
+      "#define HAVE_AVX2\n")
+  elseif ("${TCORE}" STREQUAL "SKYLAKEX")
+    file(APPEND ${TARGET_CONF_TEMP}
+      "#define HAVE_AVX512\n")
+  elseif ("${TCORE}" STREQUAL "COOPERLAKE")
+    file(APPEND ${TARGET_CONF_TEMP}
+      "#define HAVE_AVX512\n")
   elseif ("${TCORE}" STREQUAL "ARMV7")
     file(APPEND ${TARGET_CONF_TEMP}
       "#define L1_DATA_SIZE\t65536\n"
diff --git a/cmake/system.cmake b/cmake/system.cmake
index 4cc46236d..48d206b12 100644
--- a/cmake/system.cmake
+++ b/cmake/system.cmake
@@ -64,12 +64,36 @@ if (DEFINED TARGET)
     if (${CMAKE_C_COMPILER_ID} STREQUAL "GNU")
       execute_process(COMMAND ${CMAKE_C_COMPILER} -dumpversion OUTPUT_VARIABLE GCC_VERSION)
       if (${GCC_VERSION} VERSION_GREATER 4.7 OR ${GCC_VERSION} VERSION_EQUAL 4.7)
-        set (KERNEL_DEFINITIONS "${KERNEL_DEFINITIONS} -mavx2")
+        set (KERNEL_DEFINITIONS "${KERNEL_DEFINITIONS} -msse3 -mavx2")
       endif()
     elseif (${CMAKE_C_COMPILER_ID} STREQUAL "CLANG")
-      set (KERNEL_DEFINITIONS "${KERNEL_DEFINITIONS} -mavx2")
+      set (KERNEL_DEFINITIONS "${KERNEL_DEFINITIONS} -msse -msse3 -mavx2")
     endif()
   endif()
+  if (${TARGET} STREQUAL "HASWELL" AND NOT NO_AVX2)
+      set (KERNEL_DEFINITIONS "${KERNEL_DEFINITIONS} -msse3 -mavx2")
+  endif()
+  if (${TARGET} STREQUAL "ZEN" AND NOT NO_AVX2)
+      set (KERNEL_DEFINITIONS "${KERNEL_DEFINITIONS} -msse3 -mavx2")
+  endif()
+  if (${TARGET} STREQUAL "SANDYBRIDGE" AND NOT NO_AVX)
+      set (KERNEL_DEFINITIONS "${KERNEL_DEFINITIONS} -msse3 -mavx")
+  endif()
+  if (${TARGET} STREQUAL "BARCELONA" OR ${TARGET} STREQUAL "STEAMROLLER" OR ${TARGET} STREQUAL "BULLDOZER" OR ${TARGET} STREQUAL "EXCAVATOR")
+      set (KERNEL_DEFINITIONS "${KERNEL_DEFINITIONS} -msse3")
+  endif()
+  if (${TARGET} STREQUAL "PILEDRIVER" OR ${TARGET} STREQUAL "BOBCAT" OR ${TARGET} STREQUAL "OPTERON_SSE3")
+      set (KERNEL_DEFINITIONS "${KERNEL_DEFINITIONS} -msse3")
+  endif()
+  if (${TARGET} STREQUAL "PRESCOTT" OR ${TARGET} STREQUAL "NANO")
+      set (KERNEL_DEFINITIONS "${KERNEL_DEFINITIONS} -msse3")
+  endif()
+  if (${TARGET} STREQUAL "NEHALEM" OR ${TARGET} STREQUAL "ATOM")
+      set (KERNEL_DEFINITIONS "${KERNEL_DEFINITIONS} -msse3")
+  endif()
+  if (${TARGET} STREQUAL "CORE2" OR ${TARGET} STREQUAL "PENRYN" OR ${TARGET} STREQUAL "DUNNINGTON")
+      set (KERNEL_DEFINITIONS "${KERNEL_DEFINITIONS} -msse3")
+  endif()
   if (DEFINED HAVE_SSE)
     set (KERNEL_DEFINITIONS "${KERNEL_DEFINITIONS} -msse")
   endif()