automake-1.16: Preprocessing Fortran 77

 
 8.14.1 Preprocessing Fortran 77
 -------------------------------
 
 ‘N.f’ is made automatically from ‘N.F’ or ‘N.r’.  This rule runs just
 the preprocessor to convert a preprocessable Fortran 77 or Ratfor source
 file into a strict Fortran 77 source file.  The precise command used is
 as follows:
 
 ‘.F’
      ‘$(F77) -F $(DEFS) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS)
      $(AM_FFLAGS) $(FFLAGS)’
 
 ‘.r’
      ‘$(F77) -F $(AM_FFLAGS) $(FFLAGS) $(AM_RFLAGS) $(RFLAGS)’