--- CMakeLists.txt.orig	2024-02-11 18:10:50 UTC
+++ CMakeLists.txt
@@ -313,10 +313,14 @@ if (NOT CLAD_BUILD_STATIC_ONLY)
   # Filter some unsupported flags by clang.
   string(REPLACE "-fno-lifetime-dse" "" CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS}")
 
+  if (FREEBSD_BUILD_TESTS)
   add_subdirectory(unittests)
   add_subdirectory(test)
+  endif()
+  if (FREEBSD_BUILD_DEMOS)
   add_subdirectory(demos/ErrorEstimation/CustomModel)
   add_subdirectory(demos/ErrorEstimation/PrintModel)
+  endif()
 
   # Add benchmarking infrastructure.
   if (CLAD_ENABLE_BENCHMARKS)