diff --git a/CMakeLists.txt b/CMakeLists.txt
index 119e78b41..a9a6d2943 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1896,6 +1896,7 @@ is_enabled(USE_DISKLESS HAS_DISKLESS)
 is_enabled(USE_MMAP HAS_MMAP)
 is_enabled(JNA HAS_JNA)
 is_enabled(STATUS_RELAX_COORD_BOUND RELAX_COORD_BOUND)
+is_enabled(ENABLE_CDF5 HAS_CDF5)
 
 # Generate file from template.
 CONFIGURE_FILE("${CMAKE_CURRENT_SOURCE_DIR}/libnetcdf.settings.in"