diff --git a/spectrum/CMakeLists.txt b/spectrum/CMakeLists.txt
new file mode 100644
index 0000000000000000000000000000000000000000..4b7537b554d723abc731b10f483f955a82e47103
--- /dev/null
+++ b/spectrum/CMakeLists.txt
@@ -0,0 +1 @@
+ADD_SUBDIRECTORY(src)