diff --git a/CMakeLists.txt b/CMakeLists.txt
index 426b49e..1d70c2f 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -38,19 +38,28 @@ endif()
 
 ### Options ###
 
+# Configurations
+set(CMAKE_CONFIGURATION_TYPES
+  Debug Release RelWithDebInfo MinSizeRel
+  CACHE STRING "Set the configurations" FORCE)
+# Default configuration
+if (NOT CMAKE_BUILD_TYPE)
+  set(CMAKE_BUILD_TYPE RelWithDebInfo
+    CACHE STRING "Set the default configuration" FORCE)
+endif()
+
 option (DEBUG
   "Enable debug code"
   on)
 if (DEBUG)
   add_definitions(-DDEBUG)
-endif (DEBUG)
+endif()
 
-option (NDEBUG
-  "Enable no-debug mode (for assert() and others)"
-  off)
-if (NDEBUG)
-  add_definitions(-DNDEBUG)
-endif (NDEBUG)
+
+### Flags ###
+
+set(CMAKE_C_FLAGS_DEBUG "${CMAKE_C_FLAGS_DEBUG} -Wall -Wextra -Wstrict-prototypes")
+set(CMAKE_CXX_FLAGS_DEBUG "${CMAKE_CXX_FLAGS_DEBUG} -Wall -Wextra")
 
 
 ### Libraries ###
diff --git a/TODO.t2t b/TODO.t2t
index f3d0cfb..b11bad1 100644
--- a/TODO.t2t
+++ b/TODO.t2t
@@ -57,7 +57,6 @@ Work to do in OwlPS
 
 - CMake:
   - libraries: version numbers (sonames) and symbolic links
-  - compilation flags
   - installation targets
   - static targets
   - compile Positioner