Add memory.c to CMake.
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 222e4f4..b30c3cd 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -156,6 +156,7 @@
 SET(XNNPACK_COLD_SRCS ${XNNPACK_OPERATOR_SRCS})
 LIST(APPEND XNNPACK_COLD_SRCS
   src/init.c
+  src/memory.c
   src/operator-delete.c)
 
 SET(XNNPACK_HOT_SRCS