Index: src/CMakeLists.txt
--- src/CMakeLists.txt.orig
+++ src/CMakeLists.txt
@@ -185,6 +185,9 @@ endif()
 if(ENABLE_PULSEAUDIO)
 	list(APPEND VOIP_SOURCE_FILES_C audiofilters/pulseaudio.c)
 endif()
+if(ENABLE_SNDIO)
+	list(APPEND VOIP_SOURCE_FILES_C audiofilters/sndio.c)
+endif()
 if(ENABLE_QSA)
 	list(APPEND VOIP_SOURCE_FILES_C audiofilters/qsa.c)
 endif()
