H2PH(1) Perl Programmers Reference Guide H2PH(1)NAMEh2ph - convert .h C header files to .ph Perl header files
SYNOPSISh2ph [-d destination directory] [-r | -a] [-l] [headerfiles]
DESCRIPTIONh2ph 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{'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 locat-
ing problems with h2ph. In those cases when you require
a .ph file containing syntax errors, instead of the
cryptic
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[ 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 ALSOperl(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.
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:
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enum {
FIRST_VALUE,
SECOND_VALUE,
#ifdef ABC
THIRD_VALUE
#endif
};
Doesn't necessarily locate all of your C compiler's
internally-defined symbols.
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