---
name: "omnicpp"
section: "1"
platform: "linux"
package: "omniidl"
version: "4.3.3+ds1-1"
release: "Debian 13 (Trixie)"
platforms: ["linux"]
url: "https://new.carta.tech/omnicpp"
---

# omnicpp(1)

OmniORB cpp preprocessor for IDL compiler

## NAME

omnicpp - OmniORB cpp preprocessor for IDL compiler

## SYNOPSIS

**omnicpp** \[*options*\]

## DESCRIPTION

This manual page documents briefly the **omnicpp** command.

**omniidl** is omniORBs IDL compiler and uses **omnicpp** as it's C preprocessor.  **omnicpp** is really just the GNU C preprocessor under a different name.  Normally you should not need to invoke this directly but should use **omniidl** instead.

## OPTIONS

As this is just the GNU C preprocessor **cpp** you can see that program for the full options.  Normally you should not be invoking this directly but should use **omniidl** instead.  The options listed here should really be given to **omniidl**, but they are passed straight to **omnicpp**.

- **-D** *name*

  Define *name* for the preprocessor.

- **-U** *name*

  Undefine *name* for the preprocessor.

- **-I** *dir*

  Include *dir* in the preprocessor search path.  Note that the current directory is not on the include search path by default.  Use *-I.* for that.

## SEE ALSO

[**omniidl**(1)](/omniidl/1.md).\
 The programs are documented fully by the HTML documentation in the omniorb4-doc package.

## AUTHOR

omnicpp was written by Duncan Grisby \<duncan@grisby.org\>

This manual page was written by Floris Bruynooghe \<floris.bruynooghe@gmail.com\>, for the Debian project (but may be used by others).