gfortran read stdin

[coml <coml@xxxxxxxxxx>]

I have some fairly long make files that massage some .f90 files and  
pipe the result to the compiler.  How do I tell gfortran to read from  
standard input?

Thanks,

Hugh McCutchen, Jr.
5028 Brillo Street
San Diego, CA  92117-1253
858-274-7196
coml@xxxxxxxxxx