Merge branch 'thoennes/fix-arm64-flag' into 'master'

fix localhost optim for simd test

See merge request walberla/walberla!581

tests/simd/CMakeLists.txt

@@ -8,7 +8,7 @@
 
 # builds the test
 
-if ( WALBERLA_CXX_COMPILER_IS_GNU OR (WALBERLA_CXX_COMPILER_IS_CLANG AND (NOT CMAKE_CXX_COMPILER_ID STREQUAL "AppleClang" OR NOT CMAKE_HOST_SYSTEM_PROCESSOR STREQUAL "arm64")) )
+if ( WALBERLA_CXX_COMPILER_IS_GNU OR (WALBERLA_CXX_COMPILER_IS_CLANG AND NOT (CMAKE_CXX_COMPILER_ID STREQUAL "AppleClang" OR CMAKE_HOST_SYSTEM_PROCESSOR STREQUAL "arm64")) )
   set( MarchNativeString "-march=native" )
 endif()