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       gen-ctl-io - generate C interface code for libctl control files


       gen-ctl-io [OPTION]... [spec-file]


       gen-ctl-io generates C code to import/export the input/output variables
       used in a libctl control file.  gen-ctl-io generates  files  like  ctl-
       io.h   and   ctl-io.c.   These  files  define  global  variables,  data
       structures, and functions for the input/output variables, classes,  and
       function  interfaces  defined in the spec-file argument, automating the
       interaction between C and Guile.

       The arguments such as --code and --header are used to  control  whether
       ctl-io.c  or  ctl-io.h,  etcetera,  are  generated.   If no argument is
       specified then both of  these  files  are  generated  by  default,  for
       backwards compatibility.

       libctl is a free library to aid in interfacing scientific software with
       the GNU Guile scripting and extension language.  Documentation  for  it
       may   be   found   online   at   the   libctl   home  page:  http://ab-


       --code Generate C (or C++) source code to implement the Guile interface
              functions.   The  default output file name is ctl-io.c (in C) or
              ctl-io.cpp (in C++).

              Generate the header file declaring the interface data types  and
              functions.  The  default  output file name is ctl-io.h (in C) or
              ctl-io.hpp (in C++).

       --swig Generate a SWIG interface definition  file  declaring  automatic
              conversions  for  the  various  libctl  data types.  The default
              output file name is ctl-io.i.

       --cxx  Generate C++ code instead of C code.

       -o file
              Use file as  the  output  file  name  instead  of  the  defaults


       Send bug reports to S. G. Johnson,


       Written by Steven G. Johnson.