Include CMakeDependentOption before using that functionality

wtoorop · wtoorop · commit a105556619d4 · 2020-02-19T13:48:40.000+01:00
Thanks Tom Porter
diff --git a/CMakeLists.txt b/CMakeLists.txt
@@ -30,6 +30,7 @@ list(APPEND CMAKE_MODULE_PATH "${CMAKE_CURRENT_SOURCE_DIR}/cmake/modules")
 include(CheckIncludeFile)
 include(CheckSymbolExists)
 include(GNUInstallDirs)
+include(CMakeDependentOption)
 
 # Options.
 find_package(Libsystemd)
