find_package(Doxygen REQUIRED)

# Find all the public headers
get_target_property(WRMATH_PUBLIC_HEADER_DIR wrmath INTERFACE_INCLUDE_DIRECTORIES)
file(GLOB_RECURSE WRMATH_PUBLIC_HEADERS ${WRMATH_PUBLIC_HEADER_DIR}/*.h)

#This will be the main output of our command
set(DOXYGEN_INDEX_FILE ${CMAKE_CURRENT_SOURCE_DIR}/html/index.html)

add_custom_command(OUTPUT ${DOXYGEN_INDEX_FILE}
		DEPENDS ${WRMATH_PUBLIC_HEADERS}
		COMMAND ${DOXYGEN_EXECUTABLE} Doxyfile
		WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}
		MAIN_DEPENDENCY Doxyfile
		COMMENT "Generating docs")

add_custom_target(Doxygen ALL DEPENDS ${DOXYGEN_INDEX_FILE})