---
name: "dh_ppp"
section: "1p"
platform: "linux"
package: "ppp-dev"
version: "2.5.2-1+1"
release: "Debian 13 (Trixie)"
platforms: ["linux"]
url: "https://new.carta.tech/dh_ppp"
---

# dh\_ppp(1p)

calculate ppp dependencies

## NAME

dh\_ppp - calculate ppp dependencies

## SYNOPSIS

**dh\_ppp** \[*debhelper options*\] \[**--breaks**\] \[**--force**\] \[**--plugin-dir**\]

## DESCRIPTION

**dh\_ppp** is a debhelper program that adds appropriate ppp dependencies on packages that build pppd plugins.

By default, some entries are added to **misc:Depends** that ensure that packages which contain plugins that are loaded into pppd depend on an appropriate version of the ppp package.

You may prefer to use a **Breaks** relationship instead, for example if your package supplies a pppd plugin but does not require it for normal operation. In that case you should supply the **--breaks** option and **misc:Breaks** will be populated instead of **misc:Depends**.

Substvars entries are only added if a pppd plugin is detected in the build products, unless **--force** is specified. Plugins are detected by searching a package's build products for libraries with a symbol named **plugin\_init**.

A warning is emitted if a plugin is found that does not also contain a **pppd\_version** symbol.

Please note there is a **dh** addon named **ppp** which can be used to automatically invoke **dh\_ppp** for you.

## FILES

- /usr/share/ppp-dev/substvars

  Template substitution variables. The values in this file are used when populating the **misc:Depends** or **misc:Breaks** substition variables, or they may be manually copied into a package's substvars if one wishes not to use **dh\_ppp**.

## OPTIONS

- **--breaks**

  Rather than populating **misc:Depends** to ensure an appropriate version of **ppp** is used, populate **misc:Breaks** such that a inappropriate version of **ppp** may not be used.

- **--force**

  Do not try to detect pppd plugins in the package, and always assume that a plugin is present. This will cause **misc:Depends** (or **misc:Breaks**) to always be populated.

- **--plugin-dir**

  Simply outputs the path to the pppd plugins directory for the current ABI version. When this flag is specified, **dh\_ppp** makes no attempt to detect any plugins nor does it update any substitution variables.

## NOTES

Note that this command is not idempotent. [**dh\_prep**(1)](/dh_prep/1.md) should be called between invocations of this command (with the same arguments). Otherwise, it may cause multiple instances of the same text to be added to the substition variables.

Note that **dh\_ppp** should be run before **dh\_gencontrol**. The **ppp** sequence addon for **dh** does the right thing, this note is only relevant when you are calling **dh\_ppp** manually.

## SEE ALSO

[**debhelper**(7)](/debhelper/7.md)

## AUTHORS

Chris Boot \<bootc@debian.org\>