diff --git a/CMakeLists.txt b/CMakeLists.txt
index 07b08cc..09a89e5 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -111,6 +111,8 @@ set(5.advanced_lighting
 )
 
 
+configure_file(configuration/root_directory.h.in configuration/root_directory.h)
+include_directories(${CMAKE_BINARY_DIR}/configuration)
 
 foreach(CHAPTER ${CHAPTERS})
     foreach(DEMO ${${CHAPTER}})
diff --git a/configuration/root_directory.h.in b/configuration/root_directory.h.in
new file mode 100644
index 0000000..daefa5f
--- /dev/null
+++ b/configuration/root_directory.h.in
@@ -0,0 +1 @@
+const char * logl_root = "${CMAKE_SOURCE_DIR}";
\ No newline at end of file
diff --git a/includes/learnopengl/filesystem.h b/includes/learnopengl/filesystem.h
index 7cb469c..80f1e88 100644
--- a/includes/learnopengl/filesystem.h
+++ b/includes/learnopengl/filesystem.h
@@ -2,6 +2,7 @@
 #define FILESYSTEM_H
 
 #include <string>
+#include "root_directory.h" // This is a configuration file generated by CMake.
 
 class FileSystem
 {
@@ -18,7 +19,8 @@ public:
 private:
   static std::string const & getRoot()
   {
-    static char const * givenRoot {getenv("LOGL_ROOT_PATH")};
+    static char const * envRoot = getenv("LOGL_ROOT_PATH");
+    static char const * givenRoot {envRoot != nullptr ? envRoot : logl_root};
     static std::string root {givenRoot != nullptr ? givenRoot : ""};
     return root;
   }