px4_autopilot/Tools/check_submodules.sh

#!/bin/sh

[ -n "$GIT_SUBMODULES_ARE_EVIL" ] && {
    # GIT_SUBMODULES_ARE_EVIL is set, meaning user doesn't want submodules
    echo "Skipping submodules. NUTTX_SRC is set to $NUTTX_SRC"
    exit 0
}

if [ -d NuttX/nuttx ];
	then
	STATUSRETVAL=$(git submodule summary | grep -A20 -i "NuttX" | grep "<")
	if [ -z "$STATUSRETVAL" ]; then
		echo "Checked NuttX submodule, correct version found"
	else
		echo ""
		echo ""
		echo "   NuttX sub repo not at correct version. Try 'git submodule update'"
		echo "   or follow instructions on http://pixhawk.org/dev/git/submodules"
		echo ""
		echo "   DO NOT FORGET TO RUN 'make distclean && make archives' AFTER EACH NUTTX UPDATE!"
		echo ""
		echo ""
		echo "New commits required:"
		echo "$(git submodule summary)"
		echo ""
		exit 1
	fi
else
	git submodule init;
	git submodule update;
fi


if [ -d mavlink/include/mavlink/v1.0 ];
	then
	STATUSRETVAL=$(git submodule summary | grep -A20 -i "mavlink/include/mavlink/v1.0" | grep "<")
	if [ -z "$STATUSRETVAL" ]; then
		echo "Checked mavlink submodule, correct version found"
	else
		echo ""
		echo ""
		echo "mavlink sub repo not at correct version. Try 'git submodule update'"
		echo "or follow instructions on http://pixhawk.org/dev/git/submodules"
		echo ""
		echo ""
		echo "New commits required:"
		echo "$(git submodule summary)"
		echo ""
		exit 1
	fi
else
	git submodule init;
	git submodule update;
fi

exit 0