diff --git a/CMakeLists.txt b/CMakeLists.txt
index febdf2f..ad76118 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -20,6 +20,11 @@ SET(LIBRARY_OUTPUT_PATH ${CMAKE_CURRENT_BINARY_DIR}/bin/Win32)
 ENDIF(PA_CONFIG_LIB_OUTPUT_PATH)
 ENDIF(CMAKE_CL_64)
 
+OPTION(PA_ENABLE_DEBUG_OUTPUT "Enable debug output for Portaudio" OFF)
+IF(PA_ENABLE_DEBUG_OUTPUT)
+ADD_DEFINITIONS(-DPA_ENABLE_DEBUG_OUTPUT)
+ENDIF(PA_ENABLE_DEBUG_OUTPUT)
+
 IF(WIN32 AND MSVC)
 OPTION(PA_DLL_LINK_WITH_STATIC_RUNTIME "Link with static runtime libraries (minimizes runtime dependencies)" ON)
 IF(PA_DLL_LINK_WITH_STATIC_RUNTIME)