diff --git a/.gitignore b/.gitignore
index 6d65327..7cc9bfb 100644
--- a/.gitignore
+++ b/.gitignore
@@ -43,5 +43,6 @@ install_manifest.txt
 # unsuported build
 windows*
 
+build/src
 build/tetris
 .kdev4*
diff --git a/CMakeLists.txt b/CMakeLists.txt
index b45e7bd..b4b94df 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,27 +1,10 @@
 cmake_minimum_required(VERSION 2.8)
 
-project(tetris)
+set(EXE_NAME tetris)
 
-add_executable(
-	tetris
-	scoreitem.cpp
-	scorestate.cpp
-	stringinput.cpp
-	part.cpp
-	main.cpp
-	global.cpp
-	map.cpp
-	resource.cpp
-	game.cpp
-	pausestate.cpp
-	playstate.cpp
-	menustate.cpp
-	menuitem.cpp
-	menu.cpp
-)
+project(${EXE_NAME})
+
+add_subdirectory(src)
 
-target_link_libraries(tetris SDL SDL_ttf)
 
-set(CMAKE_CXX_FLAGS "-Wextra -ftabstop=4 -march=native -std=gnu++11 -fshow-column -ftabstop=4 -frounding-math -pipe")
 
-install(TARGETS tetris RUNTIME DESTINATION bin)