Cmake: Detect CPU Features

cmake/CPUFeatures

@@ -0,0 +1,53 @@
+cmake_minimum_required(VERSION 3.2)
+
+macro(CHECK_CPU)
+	if(CMAKE_SYSTEM_NAME MATCHES "Linux")
+	   EXEC_PROGRAM(cat ARGS "/proc/cpuinfo" OUTPUT_VARIABLE CPUINFO)
+
+	   STRING(REGEX REPLACE "^.*(sse2).*$" "\\1" SSE_THERE ${CPUINFO})
+	   STRING(COMPARE EQUAL "sse2" "${SSE_THERE}" SSE2_TRUE)
+	   IF (SSE2_TRUE)
+		  MESSAGE("-- -- Found SSE2")
+		  set(CPU_SSE2_AVAILABLE true INTERNAL BOOL "SSE2 available on host")
+	   ELSE ()
+		  set(CPU_SSE2_AVAILABLE false INTERNAL BOOL "SSE2 not available on host")
+	   ENDIF (SSE2_TRUE)
+
+	   STRING(REGEX REPLACE "^.*(sse3).*$" "\\1" SSE_THERE ${CPUINFO})
+	   STRING(COMPARE EQUAL "sse3" "${SSE_THERE}" SSE3_TRUE)
+	   IF (SSE3_TRUE)
+		  MESSAGE("-- -- Found SSE3")
+		  set(CPU_SSE3_AVAILABLE true INTERNAL BOOL "SSE3 available on host")
+	   ELSE ()
+		  set(CPU_SSE3_AVAILABLE false INTERNAL BOOL "SSE3 not available on host")
+	   ENDIF (SSE3_TRUE)
+
+	   STRING(REGEX REPLACE "^.*(sse4_2).*$" "\\1" SSE_THERE ${CPUINFO})
+	   STRING(COMPARE EQUAL "sse4_2" "${SSE_THERE}" SSE4.2_TRUE)
+	   IF (SSE4.2_TRUE)
+		  MESSAGE("-- -- Found SSE4.2")
+		  set(CPU_SSE4.2_AVAILABLE true INTERNAL BOOL "SSE4.2 available on host")
+	   ELSE ()
+		  set(CPU_SSE4.2_AVAILABLE false INTERNAL BOOL "SSE4.2 not available on host")
+	   ENDIF (SSE4.2_TRUE)
+
+	   STRING(REGEX REPLACE "^.*(avx).*$" "\\1" SSE_THERE ${CPUINFO})
+	   STRING(COMPARE EQUAL "avx" "${SSE_THERE}" AVX_TRUE)
+	   IF (AVX_TRUE)
+		  MESSAGE("-- -- Found AVX")
+		  set(CPU_AVX_AVAILABLE true INTERNAL BOOL "AVX available on host")
+	   ELSE ()
+		  set(CPU_AVX_AVAILABLE false INTERNAL BOOL "AVX not available on host")
+	   ENDIF (AVX_TRUE)
+	else()
+		MESSAGE("Error detecting CPU features")
+	endif(CMAKE_SYSTEM_NAME MATCHES "Linux")
+endmacro(CHECK_CPU)
+
+if(CPU_DETECTED)
+else()
+	MESSAGE("-- Detecting CPU Features")
+	CHECK_CPU()
+	MESSAGE("-- Detecting CPU Features - done")
+    set(CPU_DETECTED true CACHE INTERNAL "asd")
+endif(CPU_DETECTED)