###############################################################################
# Only execute commands if file was not included already
###############################################################################
if (NOT AVATARAWRAPPER_CONFIG_CMAKE_LOADED)

###############################################################################
# Check if Avatara will be built or if it must be found externally
###############################################################################
if (NOT BUILD_EXTERNAL_AVATARA)

	#######################################################################
	# Add local module path to CMAKE_MODULE_PATH
	#######################################################################
	set(CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH} "${CMAKE_CURRENT_SOURCE_DIR}/cmake/Modules/")	

	#######################################################################
	# find avatara itself:
	#######################################################################
	if ( BUILD_TOOL_AVATARAWRAPPER )
		find_package ( avatara REQUIRED )
	else ( BUILD_TOOL_AVATARAWRAPPER )
		find_package ( avatara )
		mark_as_advanced (FORCE avatara_ROOT_DIR)
	endif ( BUILD_TOOL_AVATARAWRAPPER )
	if ( avatara_FOUND )
		include_directories ( ${avatara_INCLUDE_DIRS} )
		link_directories ( ${avatara_LIBRARY_DIRS} )
		add_definitions ( ${avatara_DEFINITIONS} )

		###############################################################
		# Add avatara variables to the AvataraWrapper export values
		###############################################################
		list (APPEND AvataraWrapper_INCLUDE_DIRS 
			${avatara_INCLUDE_DIRS})
		list (APPEND AvataraWrapper_LIBRARY_DIRS 
			${avatara_LIBRARY_DIRS})
	endif ( avatara_FOUND )

else (NOT BUILD_EXTERNAL_AVATARA)

	#######################################################################
	# Ensure that avatara sources are available
	#######################################################################
	find_file(AVATARA_CHECK_HEADER avatara/OSGAvatar.h
		${INVRS_SOURCE_DIR}/external/avatara-1.0/include)
	
	mark_as_advanced(AVATARA_CHECK_HEADER)
	mark_as_advanced (FORCE avatara_ROOT_DIR)
	
	if (NOT AVATARA_CHECK_HEADER)
		message(FATAL_ERROR "ERROR: AvataraWrapper can not be built 
			without avatara library. Please download avatara from 
			http://www.inVRs.org and unpack it in the 
			<inVRs>/external folder!")
	endif (NOT AVATARA_CHECK_HEADER)

	#######################################################################
	# Add avatara include directory and set the required avatara libraries
	#######################################################################
	include_directories(${INVRS_SOURCE_DIR}/external/avatara-1.0/include
		${INVRS_SOURCE_DIR}/external/avatara-1.0/include/avatara)

	set (avatara_LIBRARIES avatara)

	set ( avatara_FOUND TRUE )

endif (NOT BUILD_EXTERNAL_AVATARA)

if ( NOT DEFINED BUILD_TOOL_AVATARAWRAPPER )
	set ( BUILD_TOOL_AVATARAWRAPPER ${avatara_FOUND} CACHE BOOL
		"Build the inVRs-wrapper to the avatara library" )
endif ( NOT DEFINED BUILD_TOOL_AVATARAWRAPPER )

if ( NOT BUILD_TOOL_AVATARAWRAPPER )
	MARK_AS_ADVANCED ( avatara_ROOT_DIR )
endif ( NOT BUILD_TOOL_AVATARAWRAPPER )

###############################################################################
# Finish
###############################################################################
set (AVATARAWRAPPER_CONFIG_CMAKE_LOADED ON)
endif (NOT AVATARAWRAPPER_CONFIG_CMAKE_LOADED)