diff --git a/configure.py b/configure.py
index bb06f8a6..287c58bb 100644
--- a/configure.py
+++ b/configure.py
@@ -476,6 +476,8 @@ config.libs = [
         "host": False,
         "objects": [
             Object(Matching, "c/c_list.cpp"),
+            Object(NonMatching, "c/c_math.cpp"),
+            Object(NonMatching, "c/c_rand.cpp"),
             Object(Matching, "c/c_tree.cpp"),
         ],
     },