Compile time SIMD determination

Author: dmarce1

CMakeLists.txt

@@ -1,5 +1,5 @@
 
-set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++11 -O3 -march=native")
+set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAG} -march=native -std=c++11 -O3")
 
 add_executable( fmm_test
 	src/main.cpp

src/simd.hpp

@@ -14,7 +14,12 @@
 
 const std::size_t simd_len = 8;
 
+#ifdef __AVX__
+#pragma message( "Compiling with SIMD\n" )
 #define USE_SIMD
+#else
+#pragma message( "Compiling without SIMD\n" )
+#endif
 
 #ifdef USE_SIMD
 #ifndef __MIC__