Oracle Pro*c Makefile targets not deleted on error

Does anyone know why Oracle pro*c targets aren't deleted, if pro*c fails to make the target. This means that the halfbaked  C files are left around, and subsequent makes think everything is hunky-dory, and won't call proc again, even thought the target was never made correctly, because proc didn't wipe out the file, after it aborted.

				thanks to anyone who can answer this,
				doug blaisdelll