diff --git a/CMakeLists.txt b/CMakeLists.txt
index 50f7731..d030c17 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -14,6 +14,23 @@ set(GENERATED_INCLUDE "${PROJECT_BINARY_DIR}/include")
 include_directories("${GENERATED_INCLUDE}")
 
 
+### Options ###
+
+option (DEBUG
+  "Enable debug code"
+  on)
+if (DEBUG)
+  add_definitions(-DDEBUG)
+endif (DEBUG)
+
+option (NDEBUG
+  "Enable no-debug mode (for assert() and others)"
+  off)
+if (NDEBUG)
+  add_definitions(-DNDEBUG)
+endif (NDEBUG)
+
+
 ### Libraries ###
 
 add_subdirectory(libowlps)