- Qbs Manual
- Qbs 1.21.0

# protobuf.nanopb QML Type

Provides support for protocol buffers for embedded systems. More...

Import Statement: | import QbsModules .
Since: | Qbs 1.18

- List of all members, including inherited members

## Properties

- compilerName : string
- compilerPath : string
- importPaths : pathList
- includePath : string
- libraryPath : string
- outputDir : string
- pluginName : string
- pluginPath : string

## Detailed Description

The `protobuf.nanopb` module provides support for generating nanopb C headers and sources from proto definition files using the nanopb plugin for the protoc tool suitable for embedded systems.

A simple qbs file that uses protobuf can be written as follows:

     CppApplication {
         Depends { name: "protobuf.nanopb" }
         files: ["foo.proto", "main.cpp"]
     }

A generated header now can be included in the C++ sources:

     #include <foo.pb.h>

     int main(int argc, char* argv[]) {
         Foo bar;
         bar.has_answer = true;
         bar.answer = 42;
         return 0;
     }

Nanopb .options files to define nanopb specific proto options are supported.

### Relevant File Tags

Tag | Auto-tagged File Names | Since | Description
--- | --- | --- | ---
`"protobuf.input"` | `*.proto` | 1.13.0 | Source files with this tag are considered inputs to the `protoc` compiler.
`"protobuf.hpp"` |  | 1.18.0 | This tag is attached to the header files generated by `protoc` compiler.

## Property Documentation

compilerName : string

The name of the protoc binary.

Default: `"protoc"`

compilerPath : string

The path to the protoc binary.

Use this property to override the auto-detected location.

Default: `auto-detected`

importPaths : pathList

The list of imports that are passed to the `protoc` tool via the `--proto_path` option. These imports should contain the proto files. They are used to determine the relative structure of the generated files.

Note: The paths are passed to `protoc` in the same order as specified in this property and `protoc` output may differ depending on that order.

Default: `[]`

includePath : string

The path where protobuf nanopb C headers are located. Set this property to override the default location.

Default: `auto-detected`

libraryPath : string

The path where the protobuf nanopb runtime library is located. Set this property to override the default location.

Default: `auto-detected`

[read-only] outputDir : string

The directory where the `protoc` compiler generated files are placed.

The value of this property is automatically set by Qbs and cannot be changed by the user.

pluginName : string

The name of the nanopb protoc plugin.

Default: `"protoc-gen-nanopb"`

pluginPath : string

The path to the nanopb protoc plugin.

Use this property to override the auto-detected location.

Default: `auto-detected`