aggressive-indent-excluded-modes already contains makefile-mode and makefile-gmake-mode. makefile-bsdmake-mode should be an excluded mode as well. I am not sure about the rest of makefile-mode-derived modes though: makefile-automake-mode, makefile-makepp-mode, and makefile-imake-mode.
aggressive-indent-excluded-modes
already containsmakefile-mode
andmakefile-gmake-mode
.makefile-bsdmake-mode
should be an excluded mode as well. I am not sure about the rest ofmakefile-mode
-derived modes though:makefile-automake-mode
,makefile-makepp-mode
, andmakefile-imake-mode
.