More flexible Doxygen config

CMakeLists.txt

@@ -329,6 +329,7 @@ add_subdirectory(modules)
 add_subdirectory(scripts)
 add_subdirectory(tools)
 add_subdirectory(actions)
+add_subdirectory(doxygen)
 # deployment has to come last, to ensure that all install commands are run before deployment
 # magic is done
 add_subdirectory(deployment)

doxygen/CMakeLists.txt

+set(BUILD_DIR ${CMAKE_BINARY_DIR})
+set(SOURCE_DIR ${CMAKE_SOURCE_DIR})
+configure_file("Doxyfile.in" "Doxyfile")