preprocessors

[Ross Paterson]

On Fri, Feb 15, 2002 at 11:27:05AM +0000, Malcolm Wallace wrote:
> The latest version of hmake (3.01) has support for calling a
> preprocessor based on the filename extension, before calling the
> compiler on the resulting file.  Currently, it recognises:
> 
> 	.y	Happy
> 	.ly	literate Happy 
> 	.gc	GreenCard
> 	.hsc	hsc2hs
> 	.chs	C->HS
> 	.hs.cpp	C preprocessor
> 
> I'm not really sure whether the invocation magic for all of these
> is correct yet, but I would encourage people to try it out and
> send patches.  It is pretty easy to add new preprocessors - there
> are basically four options to define for each pp in addition to the
> filename extension.

That's nice.  Is it user-configurable?  (i.e. without changing the compiler)