--- CMakeLists.txt.orig	2020-01-12 13:35:54 UTC
+++ CMakeLists.txt
@@ -21,8 +21,10 @@ include(DuneMacros)
 dune_project()
 
 add_subdirectory("dune")
+if (FREEBSD_INSTALL_DOCS)
 add_subdirectory("doc")
-add_subdirectory("examples")
+endif()
+#add_subdirectory("examples")
 
 # finalize the dune project, e.g. generating config.h etc.
 finalize_dune_project(GENERATE_CONFIG_H_CMAKE)