diff --git a/lib/decoding/CMakeLists.txt b/lib/decoding/CMakeLists.txt
index b1c49e7..cbf2a8e 100644
--- a/lib/decoding/CMakeLists.txt
+++ b/lib/decoding/CMakeLists.txt
@@ -18,6 +18,10 @@
 # Boston, MA 02110-1301, USA.
 
 add_subdirectory(osmocom/coding)
+add_subdirectory(osmocom/core)
+add_subdirectory(osmocom/codec)
+add_subdirectory(osmocom/gsm)
+add_subdirectory(osmocom/crypt)
 add_subdirectory(openbts)
 
 add_sources(