diff --git a/cmake/Compiler-GNU.cmake b/cmake/Compiler-GNU.cmake
index cafcfabca..5e2bf2ce6 100644
--- a/cmake/Compiler-GNU.cmake
+++ b/cmake/Compiler-GNU.cmake
@@ -12,9 +12,9 @@ endif ()
 if (OPTIMIZATION STREQUAL "OFF")
   set (OPTIMIZATION_FLAGS "-O0")
 elseif (OPTIMIZATION STREQUAL "DEFENSIVE")
-  set (OPTIMIZATION_FLAGS "-O2 -mtune=generic")
+  set (OPTIMIZATION_FLAGS "-O2 -mtune=generic -flto")
 elseif (OPTIMIZATION STREQUAL "AGGRESSIVE")
-  set (OPTIMIZATION_FLAGS "-O3 -march=native -ffast-math -funroll-loops -ftree-vectorize")
+  set (OPTIMIZATION_FLAGS "-O3 -march=native -mtune=native -ffast-math -funroll-loops -ftree-vectorize -flto")
 endif ()
 
 set (STANDARD_CHECK "-std=f2018 -pedantic-errors" )