h2ph(1)

NAME
     h2ph - convert .h C header files to .ph Perl header files

SYNOPSIS
     h2ph [-d destination directory] [-r | -a] [-l] [headerfiles]

DESCRIPTION
     h2ph converts any C header files specified to the corresponding Perl
     header file format.  It is most easily run while in /usr/include:

             cd /usr/include; h2ph * sys/*

     or

             cd /usr/include; h2ph -r -l .

     The output files are placed in the hierarchy rooted at Perl's
     architecture dependent library directory.  You can specify a different
     hierarchy with a -d switch.

     If run with no arguments, filters standard input to standard output.

OPTIONS
     -d destination_dir
         Put the resulting .ph files beneath destination_dir, instead of
         beneath the default Perl library location
         ($Config{'installsitsearch'}).

     -r  Run recursively; if any of headerfiles are directories, then run h2ph
         on all files in those directories (and their subdirectories, etc.).
         -r and -a are mutually exclusive.

     -a  Run automagically; convert headerfiles, as well as any .h files which
         they include.  This option will search for .h files in all
         directories which your C compiler ordinarily uses.  -a and -r are
         mutually exclusive.

     -l  Symbolic links will be replicated in the destination directory.  If
         -l is not specified, then links are skipped over.

     -h  Put ``hints'' in the .ph files which will help in locating problems
         with h2ph.  In those cases when you require a .ph file containing
         syntax errors, instead of the cryptic

                 [ some error condition ] at (eval mmm) line nnn

         you will see the slightly more helpful

                 [ some error condition ] at filename.ph line nnn

         However, the .ph files almost double in size when built using -h.
     -D  Include the code from the .h file as a comment in the .ph file.  This
         is primarily used for debugging h2ph.

ENVIRONMENT
     No environment variables are used.

FILES
      /usr/include/*.h
      /usr/include/sys/*.h

     etc.

AUTHOR
     Larry Wall

SEE ALSO
     perl(1)

DIAGNOSTICS
     The usual warnings if it can't read or write the files involved.

BUGS
     Doesn't construct the %sizeof array for you.

     It doesn't handle all C constructs, but it does attempt to isolate
     definitions inside evals so that you can get at the definitions that it
     can translate.

     It's only intended as a rough tool.  You may need to dicker with the
     files produced.