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 * sys/* arpa/* netinet/*- 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{'installsitearch'}). - -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.
- -Q ``Quiet'' mode; don't print out the names of the files being
- converted.
ENVIRONMENT
No environment variables are used.
FILES
- /usr/include/*.h
/usr/include/sys/*.h - etc.
AUTHOR
Larry Wall
SEE ALSO
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.
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:
- enum {
FIRST_VALUE,
SECOND_VALUE, - #ifdef ABC
THIRD_VALUE
- #endif
}; - Doesn't necessarily locate all of your C compiler's internally-defined symbols.