############################################################################
#
#   Copyright (c) 2019 PX4 Development Team. All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
#
# 1. Redistributions of source code must retain the above copyright
#    notice, this list of conditions and the following disclaimer.
# 2. Redistributions in binary form must reproduce the above copyright
#    notice, this list of conditions and the following disclaimer in
#    the documentation and/or other materials provided with the
#    distribution.
# 3. Neither the name PX4 nor the names of its contributors may be
#    used to endorse or promote products derived from this software
#    without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
# FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
# COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
# BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
# OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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# POSSIBILITY OF SUCH DAMAGE.
#
############################################################################

# Doxygen

option(BUILD_DOXYGEN "Build doxygen documentation" OFF)

if (BUILD_DOXYGEN)
	find_package(Doxygen)
	if (DOXYGEN_FOUND)
	    # set input and output files
	    set(DOXYGEN_IN ${CMAKE_SOURCE_DIR}/Documentation/Doxyfile.in)
	    set(DOXYGEN_OUT ${CMAKE_CURRENT_BINARY_DIR}/Doxyfile)

	    # request to configure the file
	    configure_file(${DOXYGEN_IN} ${DOXYGEN_OUT} @ONLY)

	    # note the option ALL which allows to build the docs together with the application
	    add_custom_target(doxygen ALL
	        COMMAND ${DOXYGEN_EXECUTABLE} ${DOXYGEN_OUT}
	        WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}
			COMMENT "Generating documentation with Doxygen"
			DEPENDS uorb_msgs parameters
			VERBATIM
			USES_TERMINAL
			)

	else()
		message("Doxygen needs to be installed to generate documentation")
	endif()
endif()