1all: overrides=<> 2make -f varname-dot-makeoverrides.mk stage_1 VAR=value 3stage_1: overrides=< VAR> 4make -f varname-dot-makeoverrides.mk stage_2 .VAR=too 5stage_2: overrides=< VAR .VAR> 6make -f varname-dot-makeoverrides.mk stage_3 7stage_3: overrides=< .VAR VAR> 8exit status 0 9