H2PH(1) | Perl Programmers Reference Guide | H2PH(1) |
h2ph - convert .h C header files to .ph Perl header files
h2ph [-d destination directory] [-r | -a] [-l] [-h] [-e] [-D] [-Q] [headerfiles]
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.
[ 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.
No environment variables are used.
/usr/include/*.h /usr/include/sys/*.h
etc.
Larry Wall
perl(1)
The usual warnings if it can't read or write the files involved.
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.
2024-04-13 | perl v5.34.1 |