cfortran.h
A transparent, machine independent interface between C and Fortran routines and global data, developed by Burkhard Burow at CERN. It provides macros which allow the C preprocessor to translate a simple description of a C (Fortran) routine or global data into a Fortran (C) interface.
Version 2.6 runs on VAX/VMS/Ultrix, DECstation, Silicon Graphics, IBM RS/6000, Sun, Cray, Apollo, HP9000, LynxOS, f2c, NAG f90.
ftp://zebra.desy.de/cfortran/.
cfortran.h was reviewed in RS/Magazine November 1992 and a user's experiences with cfortran.h are described in the Jan 93 issue of Computers in Physics.