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H2PH

Section: Perl Programmers Reference Guide (1)

Updated: 2016-01-15

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NAME

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

SYNOPSIS

h2ph [-d destination directory] [-r | -a] [-l] [-h] [-e] [-D] [-Q] [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:

or

or

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 ( ).:
-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

you will see the slightly more helpful

However, the .ph files almost double in size when built using -h.

:

-e
If an error is encountered during conversion, output file will be removed and a warning emitted instead of terminating the conversion immediately.:
-D
Include the code from the .h file as a comment in the .ph file. This is primarily used for debugging h2ph.:
-Q
'Quiet' mode; don't print out the names of the files being converted.:

ENVIRONMENT

No environment variables are used.

FILES

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 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.

You have to run this program by hand; it's not run as part of the Perl installation.

Doesn't handle complicated expressions built piecemeal, a la:

Doesn't necessarily locate all of your C compiler's internally-defined symbols.


Index

NAME

SYNOPSIS

DESCRIPTION

OPTIONS

ENVIRONMENT

FILES

AUTHOR

SEE ALSO

DIAGNOSTICS

BUGS


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