diff --git a/CMakeLists.txt b/CMakeLists.txt
index e4e3e3f..ef46938 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -122,6 +122,15 @@ set(TARGET_INCLUDES
 set(TARGET_LIBS
 )
 
+# Conditional flags
+set(CMAKE_C_FLAGS_DEBUG     "-DDEBUG -Og -g")
+set(CMAKE_CXX_FLAGS_DEBUG   "-DDEBUG -Og -g")
+set(CMAKE_ASM_FLAGS_DEBUG   "-DDEBUG -Og -g")
+
+set(CMAKE_C_FLAGS_RELEASE   "-DNDEBUG -O2")
+set(CMAKE_CXX_FLAGS_RELEASE "-DNDEBUG -O2")
+set(CMAKE_ASM_FLAGS_RELEASE "-DNDEBUG -O2")
+
 # Final compiler flags
 set(CMAKE_C_FLAGS          "${TARGET_CFLAGS_HARDWARE} ${TARGET_CFLAGS_EXTRA} ${TARGET_CFLGAGS_DEBUG} -Wall -fdata-sections -ffunction-sections -ffreestanding -fno-builtin")
 set(CMAKE_CXX_FLAGS        "${CMAKE_C_FLAGS} ${TARGET_CXXFLAGS_EXTRA}")