diff --git a/CMakeLists.txt b/CMakeLists.txt
index 3e937c7..0fcfff2 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,6 +1,8 @@
+project(osmctools)
+
 cmake_minimum_required(VERSION 3.6)
 
-add_compile_options("-O3")
+add_compile_options(-O3 -march=native -ffast-math -flto)
 
 add_executable(osmupdate osmupdate.c)
 add_executable(osmfilter osmfilter.c)