---
name: "h2ph"
section: "1p"
platform: "linux"
package: "perl"
version: "5.004.04-7.0.1"
release: "Debian 2.1 (Slink)"
platforms: ["linux"]
url: "https://new.carta.tech/h2ph/1p"
---

# h2ph(1p)

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

## NAME

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

## SYNOPSIS

**h2ph \[headerfiles\]**

## 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/*
```

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.

## ENVIRONMENT

No environment variables are used.

## FILES

```
 /usr/include/*.h
 /usr/include/sys/*.h
```

etc.

## AUTHOR

Larry Wall

## SEE ALSO

[*perl*(1)](/perl/1.md)

## 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.