I noticed you didn't mention ".DELETE_ON_ERROR". AFAIK, it's recommended to always use it (according to the GNU make manual: "[...] 'make' will do this if '.DEL

I noticed you didn't mention ".DELETE_ON_ERROR". AFAIK, it's recommended to always use it (according to the GNU make manual: "[...] 'make' will do this if '.DELETE_ON_ERROR' appears as a target. This is almost always what you want 'make' to do, but it is not historical practice; so for compatibility, you must explicitly request it.")