openage/buildsystem/version.cmake at master · tim2000/openage · GitHub

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# Copyright 2014-2015 the openage authors. See copying.md for legal info.

# logs whether the option NAME is enabled
# sets WITH_${VARNAME} to HAVE
# errors if WANT_${VARNAME} conflicts with HAVE
function(have_config_option NAME VARNAME HAVE)
	set(WANT "${WANT_${VARNAME}}")
	set(WITH_${VARNAME} "${HAVE}" PARENT_SCOPE)

	if(HAVE)
		set_property(GLOBAL APPEND PROPERTY SFT_CONFIG_OPTIONS_ENABLED "${NAME}")

		if(NOT WANT)
			message(FATAL_ERROR "${NAME}: WANT_${VARNAME}=${WANT}, but WITH_${VARNAME}=${HAVE}")
		endif()
	else()
		set_property(GLOBAL APPEND PROPERTY SFT_CONFIG_OPTIONS_DISABLED "${NAME}")

		if(WANT STREQUAL "if_available")
			message("unavailable: ${NAME}")
		elseif(WANT)
			message(FATAL_ERROR "${NAME}: WANT_${VARNAME}=${WANT}, but WITH_${VARNAME}=${HAVE}")
		endif()
	endif()
endfunction()

function(print_config_options)
	get_property(enabled_opts GLOBAL PROPERTY SFT_CONFIG_OPTIONS_ENABLED)
	get_property(disabled_opts GLOBAL PROPERTY SFT_CONFIG_OPTIONS_DISABLED)

	message("enabled options:")
	if(enabled_opts)
		foreach(opt ${enabled_opts})
			message("\t${opt}")
		endforeach()
	else()
		message("\t<none>")
	endif()

	message("")

	message("disabled options:")
	if(disabled_opts)
		foreach(opt ${disabled_opts})
			message("\t${opt}")
		endforeach()
	else()
		message("\t<none>")
	endif()

	message("")
endfunction()

function(get_config_option_string)
	get_property(enabled_opts GLOBAL PROPERTY SFT_CONFIG_OPTIONS_ENABLED)

	if(enabled_opts)
		LIST(GET enabled_opts 0 CONFIG_OPTION_STRING)
		LIST(REMOVE_AT enabled_opts 0)

		foreach(opt ${enabled_opts})
			set(CONFIG_OPTION_STRING "${CONFIG_OPTION_STRING}, ${opt}")
		endforeach()
	else()
		set(CONFIG_OPTION_STRING "< no options enabled >")
	endif()

	set(CONFIG_OPTION_STRING "${CONFIG_OPTION_STRING}" PARENT_SCOPE)
endfunction()