--- CMakeLists.txt.orig	2019-11-18 12:19:53 UTC
+++ CMakeLists.txt
@@ -12,7 +12,7 @@ if(NFL_OPTIMIZED)
 
     include(CheckCXXSourceCompiles)
     set(CMAKE_CXX_FLAGS_OLD ${CMAKE_CXX_FLAGS})
-    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -march=native")
+    #set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -march=native")
 
     check_cxx_source_compiles("#include <immintrin.h>\nint main() { return 0;}" NFLLIB_USE_AVX)
     check_cxx_source_compiles("#include <pmmintrin.h>\nint main() { return 0;}" NFLLIB_USE_SSE)
@@ -64,4 +64,6 @@ install(FILES ${NFLLIB_HDRS_3} DESTINATION include/nfl
 install(FILES ${NFLLIB_HDRS_4} DESTINATION include/nfl/opt/arch)
 install(FILES ${NFLLIB_PRNG_HDRS} DESTINATION include/nfl/prng)
 
+if (BUILD_TESTING)
 add_subdirectory(tests)
+endif()