--- CMakeLists.txt.orig	2023-02-28 08:57:54 UTC
+++ CMakeLists.txt
@@ -58,7 +58,7 @@ adjust_mpiexec_flags()
 # OpenMP
 find_package(OpenMP COMPONENTS CXX REQUIRED)
 
-SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -O3 -funroll-loops -march=native -DNDEBUG")
+SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -funroll-loops")
 
 # Bundled dependencies
 #
