p.238 in NNFS

examples/CMakeLists.txt

@@ -0,0 +1,10 @@
+# Add every subdirectory inside examples/ that contains a CMakeLists.txt
+file(GLOB children LIST_DIRECTORIES true RELATIVE "${CMAKE_CURRENT_SOURCE_DIR}" "*")
+
+foreach(child ${children})
+  if(IS_DIRECTORY "${CMAKE_CURRENT_SOURCE_DIR}/${child}" AND
+     EXISTS "${CMAKE_CURRENT_SOURCE_DIR}/${child}/CMakeLists.txt")
+    message(STATUS "Adding example: ${child}")
+    add_subdirectory("${child}")
+  endif()
+endforeach()