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


Header "SYNOPSIS" h2ph[ -d destination directory] [ -r | -a] [ -l] [ -h] [ -e] [ -D] [ -Q] [headerfiles]


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

1 cd /usr/include; h2ph * sys/*


1 cd /usr/include; h2ph * sys/* arpa/* netinet/*


1 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.


Header "OPTIONS"

" -d destination_dir" 4 Item "-d destination_dir" Put the resulting .ph files beneath destination_dir ,instead of beneath the default Perl library location ( CW$Config{(Aqinstallsitearch (Aq} ).

" -r" 4 Item "-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" 4 Item "-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" 4 Item "-l" Symbolic links will be replicated in the destination directory. If -l is not specified, then links are skipped over.

" -h" 4 Item "-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 1 [ some error condition ] at (eval mmm) line nnn you will see the slightly more helpful 1 [ some error condition ] at filename.ph line nnn However, the .ph files almost double in size when built using -h .

" -e" 4 Item "-e" If an error is encountered during conversion, output file will be removed and a warning emitted instead of terminating the conversion immediately.

" -D" 4 Item "-D" Include the code from the .h file as a comment in the .ph file. This is primarily used for debugging h2ph .

" -Q" 4 Item "-Q" 'Quiet' mode; don't print out the names of the files being converted.


Header "ENVIRONMENT" No environment variables are used.


Header "FILES" 2 /usr/include/*.h /usr/include/sys/*.h



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


Header "BUGS" Doesn't construct the CW%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.

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:

7 enum { FIRST_VALUE, SECOND_VALUE, #ifdef ABC THIRD_VALUE #endif };

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


Header "SEE ALSO" perl(1)


Header "AUTHOR" Larry Wall

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