diff --git a/meson.build b/meson.build
index acb9198eeb0c23b9a39700fc67a5ea3f3c1fe09f..6a2c9d6329605b7058cba8133e33760b8dbcb6c2 100644
--- a/meson.build
+++ b/meson.build
@@ -212,7 +212,10 @@ dependencies += [
 
 
 ############################################################
-# libraries : required and optional
+# libraries : required and optional.
+#
+# Note that optional libraries are not built in
+# on a generic build.
 #
 _required_libraries  = [
     'c',