preprocessor output target

[Jason Roscoe]

Hi,
I apologize if this is not the correct list but maybe someone here can 
answer ...  I have a project that uses autoconf/automake and libtool.  I 
was wondering if there is already a macro that will create Makefile 
targets for getting the preprocessor output.  For example, if I have a 
source file called init.c, I would like to be able to type something 
like 'make init.i' and get the output of the preprocessor only (e.g., 
gcc -E).  The main reason is that I want to be able to see the headers 
that are being included and where they are getting pulled from.  Is this 
already built in to the tools I am using?  Thanks.

Jason