How to get the Makefile path?

Hi all,

    I need to get the path to the Makefile being processed by the make
executable. I tried to use the $(MFLAGS) variable for that, but it
ignores the -f switch. Look this test:

% cat  /home/me/Makefile
all:
	@echo MAKEFLAGS=$(MAKEFLAGS)
	@echo MFLAGS=$(MFLAGS)
	@echo MAKECMDGOALS=$(MAKECMDGOALS)

% make -nf /home/me/Makefile all
echo MAKEFLAGS=n
echo MFLAGS=-n
echo MAKECMDGOALS=all

   Any help will be appreciated.

   Rgds

                               Walter