CMakeLists for each C file

src/engine/CMakeLists.txt

@@ -0,0 +1,12 @@
+# Copyright (c) 2021 Dominic Msters
+# 
+# This software is released under the MIT License.
+# https://opensource.org/licenses/MIT
+
+# Sources
+target_sources(${PROJECT_NAME}
+  PRIVATE
+    client.c
+    engine.c
+    thread.c
+)