diff --git a/CMakeLists.txt b/CMakeLists.txt
index 44ed7e42..dfaf182c 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -13,7 +13,7 @@ endif()
 if(NOT CMAKE_BUILD_TYPE)
     set(CMAKE_BUILD_TYPE "Release" CACHE STRING "Build type")
 endif()
-set(CMAKE_BUILD_TYPE_VALUES "Debug;Release" CACHE INTERNAL "List of supported build")
+set(CMAKE_BUILD_TYPE_VALUES "Debug;Release;LVL1;LVL2;LVL3;LTO1;LTO2;LTO3" CACHE INTERNAL "List of supported build")
 set_property(CACHE CMAKE_BUILD_TYPE PROPERTY STRINGS ${CMAKE_BUILD_TYPE_VALUES})
 
 cmake_minimum_required(VERSION 3.0)
@@ -108,9 +108,21 @@ endif()
 configure_file(include/config.h.in ${CMAKE_SOURCE_DIR}/include/config.h @ONLY)
 configure_file(include/version.h.in ${CMAKE_SOURCE_DIR}/include/version.h @ONLY)
 
-set(CMAKE_CXX_FLAGS "-m32 -msse -msse2 -msse3 -fexceptions -fno-gnu-unique -DNDEBUG -Og -rdynamic -ggdb")
-set(CMAKE_CXX_FLAGS_DEBUG "")
-set(CMAKE_CXX_FLAGS_RELEASE "")
+set(CMAKE_CXX_FLAGS "-m32 -march=native -fexceptions -fno-gnu-unique -rdynamic")
+set(CMAKE_CXX_FLAGS_DEBUG "-DNDEBUG -Og -ggdb")
+set(CMAKE_CXX_FLAGS_RELEASE "-O1")
+
+set(CMAKE_CXX_FLAGS_LVL1 "-O1 -fcaller-saves -fcode-hoisting -fcrossjumping -fcse-follow-jumps -fcse-skip-blocks -fdelete-null-pointer-checks -fdevirtualize -fdevirtualize-speculatively -fexpensive-optimizations -fgcse -fgcse-lm -fhoist-adjacent-loads -finline-small-functions -findirect-inlining -fipa-bit-cp -fipa-icf -fipa-ra -fipa-vrp -fisolate-erroneous-paths-dereference -flra-remat -foptimize-sibling-calls -foptimize-strlen -fpartial-inlining -fpeephole2 -freorder-blocks-algorithm=stc -freorder-blocks-and-partition -freorder-functions -frerun-cse-after-loop -fschedule-insns -fsched-interblock -fsched-spec -fstore-merging -fstrict-aliasing -fthread-jumps -ftree-builtin-call-dce -ftree-pre -ftree-switch-conversion -ftree-tail-merge -ftree-vrp")
+
+set(CMAKE_CXX_FLAGS_LVL2 "-O1 -fcaller-saves -fcode-hoisting -fcrossjumping -fcse-follow-jumps -fcse-skip-blocks -fdelete-null-pointer-checks -fdevirtualize -fdevirtualize-speculatively -fexpensive-optimizations -fgcse -fgcse-lm -fhoist-adjacent-loads -finline-small-functions -findirect-inlining -fipa-bit-cp -fipa-icf -fipa-ra -fipa-vrp -fisolate-erroneous-paths-dereference -flra-remat -foptimize-sibling-calls -foptimize-strlen -fpartial-inlining -fpeephole2 -freorder-blocks-algorithm=stc -freorder-blocks-and-partition -freorder-functions -frerun-cse-after-loop -fschedule-insns -fsched-interblock -fsched-spec -fstore-merging -fstrict-aliasing -fthread-jumps -ftree-builtin-call-dce -ftree-pre -ftree-switch-conversion -ftree-tail-merge -ftree-vrp -fgcse-after-reload -finline-functions -fipa-cp-clone -floop-interchange -floop-unroll-and-jam -fpeel-loops -fpredictive-commoning -fsplit-paths -ftree-loop-distribute-patterns -ftree-loop-distribution -ftree-loop-vectorize -ftree-partial-pre -ftree-slp-vectorize -funswitch-loops -fvect-cost-model=dynamic -fgraphite-identity -floop-nest-optimize -fno-semantic-interposition") 
+
+set(CMAKE_CXX_FLAGS_LVL3 "-O1 -fcaller-saves -fcode-hoisting -fcrossjumping -fcse-follow-jumps -fcse-skip-blocks -fdelete-null-pointer-checks -fdevirtualize -fdevirtualize-speculatively -fexpensive-optimizations -fgcse -fgcse-lm -fhoist-adjacent-loads -finline-small-functions -findirect-inlining -fipa-bit-cp -fipa-icf -fipa-ra -fipa-vrp -fisolate-erroneous-paths-dereference -flra-remat -foptimize-sibling-calls -foptimize-strlen -fpartial-inlining -fpeephole2 -freorder-blocks-algorithm=stc -freorder-blocks-and-partition -freorder-functions -frerun-cse-after-loop -fschedule-insns -fsched-interblock -fsched-spec -fstore-merging -fstrict-aliasing -fthread-jumps -ftree-builtin-call-dce -ftree-pre -ftree-switch-conversion -ftree-tail-merge -ftree-vrp -fgcse-after-reload -finline-functions -fipa-cp-clone -floop-interchange -floop-unroll-and-jam -fpeel-loops -fpredictive-commoning -fsplit-paths -ftree-loop-distribute-patterns -ftree-loop-distribution -ftree-loop-vectorize -ftree-partial-pre -ftree-slp-vectorize -funswitch-loops -fvect-cost-model=dynamic -fgraphite-identity -floop-nest-optimize -fno-semantic-interposition -ffast-math -fstack-arrays -fno-protect-parens -fsplit-loops -fbranch-probabilities -fprofile-arcs -funroll-loops -ftracer -fvpt")
+
+set(CMAKE_CXX_FLAGS_LTO1 "-O1 -fcaller-saves -fcode-hoisting -fcrossjumping -fcse-follow-jumps -fcse-skip-blocks -fdelete-null-pointer-checks -fdevirtualize -fdevirtualize-speculatively -fexpensive-optimizations -fgcse -fgcse-lm -fhoist-adjacent-loads -finline-small-functions -findirect-inlining -fipa-bit-cp -fipa-icf -fipa-ra -fipa-vrp -fisolate-erroneous-paths-dereference -flra-remat -foptimize-sibling-calls -foptimize-strlen -fpartial-inlining -fpeephole2 -freorder-blocks-algorithm=stc -freorder-blocks-and-partition -freorder-functions -frerun-cse-after-loop -fschedule-insns -fsched-interblock -fsched-spec -fstore-merging -fstrict-aliasing -fthread-jumps -ftree-builtin-call-dce -ftree-pre -ftree-switch-conversion -ftree-tail-merge -ftree-vrp -fgcse-after-reload -finline-functions -fipa-cp-clone -floop-interchange -floop-unroll-and-jam -fpeel-loops -fpredictive-commoning -fsplit-paths -ftree-loop-distribute-patterns -ftree-loop-distribution -ftree-loop-vectorize -ftree-partial-pre -ftree-slp-vectorize -funswitch-loops -fvect-cost-model=dynamic -fno-semantic-interposition -flto -fuse-linker-plugin -fno-fat-lto-objects") 
+
+set(CMAKE_CXX_FLAGS_LTO2 "-O1 -fcaller-saves -fcode-hoisting -fcrossjumping -fcse-follow-jumps -fcse-skip-blocks -fdelete-null-pointer-checks -fdevirtualize -fdevirtualize-speculatively -fexpensive-optimizations -fgcse -fgcse-lm -fhoist-adjacent-loads -finline-small-functions -findirect-inlining -fipa-bit-cp -fipa-icf -fipa-ra -fipa-vrp -fisolate-erroneous-paths-dereference -flra-remat -foptimize-sibling-calls -foptimize-strlen -fpartial-inlining -fpeephole2 -freorder-blocks-algorithm=stc -freorder-blocks-and-partition -freorder-functions -frerun-cse-after-loop -fschedule-insns -fsched-interblock -fsched-spec -fstore-merging -fstrict-aliasing -fthread-jumps -ftree-builtin-call-dce -ftree-pre -ftree-switch-conversion -ftree-tail-merge -ftree-vrp -fgcse-after-reload -finline-functions -fipa-cp-clone -floop-interchange -floop-unroll-and-jam -fpeel-loops -fpredictive-commoning -fsplit-paths -ftree-loop-distribute-patterns -ftree-loop-distribution -ftree-loop-vectorize -ftree-partial-pre -ftree-slp-vectorize -funswitch-loops -fvect-cost-model=dynamic -fgraphite-identity -floop-nest-optimize -fno-semantic-interposition -flto -fuse-linker-plugin -fno-fat-lto-objects") 
+
+set(CMAKE_CXX_FLAGS_LTO3 "-O1 -fcaller-saves -fcode-hoisting -fcrossjumping -fcse-follow-jumps -fcse-skip-blocks -fdelete-null-pointer-checks -fdevirtualize -fdevirtualize-speculatively -fexpensive-optimizations -fgcse -fgcse-lm -fhoist-adjacent-loads -finline-small-functions -findirect-inlining -fipa-bit-cp -fipa-icf -fipa-ra -fipa-vrp -fisolate-erroneous-paths-dereference -flra-remat -foptimize-sibling-calls -foptimize-strlen -fpartial-inlining -fpeephole2 -freorder-blocks-algorithm=stc -freorder-blocks-and-partition -freorder-functions -frerun-cse-after-loop -fschedule-insns -fsched-interblock -fsched-spec -fstore-merging -fstrict-aliasing -fthread-jumps -ftree-builtin-call-dce -ftree-pre -ftree-switch-conversion -ftree-tail-merge -ftree-vrp -fgcse-after-reload -finline-functions -fipa-cp-clone -floop-interchange -floop-unroll-and-jam -fpeel-loops -fpredictive-commoning -fsplit-paths -ftree-loop-distribute-patterns -ftree-loop-distribution -ftree-loop-vectorize -ftree-partial-pre -ftree-slp-vectorize -funswitch-loops -fvect-cost-model=dynamic -fgraphite-identity -floop-nest-optimize -fno-semantic-interposition -ffast-math -fstack-arrays -fno-protect-parens -flto -fuse-linker-plugin -fno-fat-lto-objects -fsplit-loops")
 
 target_compile_definitions(cathook PRIVATE
         _GLIBCXX_USE_CXX11_ABI=0
@@ -166,7 +178,7 @@ add_custom_command(TARGET cathook POST_BUILD
         COMMAND ${CMAKE_COMMAND} -E copy $<TARGET_FILE:cathook> "${CMAKE_SOURCE_DIR}/bin/$<TARGET_FILE_NAME:cathook>")
 
 # Strip
-if(CMAKE_BUILD_TYPE STREQUAL "Release")
+if(NOT CMAKE_BUILD_TYPE STREQUAL "Debug")
     message("Stripping info from library")
     add_custom_command(TARGET cathook POST_BUILD
     COMMAND strip --strip-all "${CMAKE_SOURCE_DIR}/bin/$<TARGET_FILE_NAME:cathook>")