diff --git a/lib/decoding/osmocom/codec/CMakeLists.txt b/lib/decoding/osmocom/codec/CMakeLists.txt
new file mode 100644
index 0000000..d5c3997
--- /dev/null
+++ b/lib/decoding/osmocom/codec/CMakeLists.txt
@@ -0,0 +1,6 @@
+add_sources(
+gsm610.c
+gsm620.c
+gsm660.c
+gsm690.c
+)