Graphviz, how to configure graphviz options?

Usage
1

Hi. I can not get Graphviz options to work. I generate a graph using a custom module below, and executing the target produces a png graph.

include_guard(GLOBAL)
add_custom_target(graphviz ALL
    COMMAND ${CMAKE_COMMAND} "--graphviz=graphviz/${PROJECT_NAME}.dot" .
    COMMAND dot -Tpng graphviz/${PROJECT_NAME}.dot -o graphviz/${PROJECT_NAME}.png
        BYPRODUCTS graphviz/*
    WORKING_DIRECTORY "${CMAKE_BINARY_DIR}"
    COMMENT "Creates a project dependency graph as png, located under: build${CMAKE_BINARY_DIR}/graphviz")

CMakeGraphVizOptions.cmake

GRAPHVIZ_GRAPH_HEADER ("test")

The error: CMake Error at /home/user/CMakeGraphVizOptions.cmake:1 (GRAPHVIZ_GRAPH_HEADER): Unknown CMake command "GRAPHVIZ_GRAPH_HEADER".

How can i set options?

What would be nice if graphviz options could be set like below, but it does not work.

set_target_properties(graphviz PROPERTIES GRAPHVIZ_GRAPH_NAME "test")
2

As the docs say, the file CMakeGraphVizOptions.cmake can control Graphviz by setting CMake variables. So what you were after is this:

set(GRAPHVIZ_GRAPH_HEADER "test")