capnproto.cpp

Provides support for Cap'n Proto for the C++ language. More...

• List of all members, including inherited members

Properties

• compilerName : string
• compilerPath : string
• importPaths : pathList
• outputDir : string
• useRpc : bool

Detailed Description

The capnproto.cpp module provides support for generating C++ headers and sources from proto definition files using the capnpc tool.

A simple qbs file that uses Cap'n Proto can be written as follows:

CppApplication {
    Depends { name: "capnproto.cpp" }
    files: ["foo.capnp", "main.cpp"]
}

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

#include <foo.capnp.h>

int main(int argc, char* argv[]) {
    ::capnp::MallocMessageBuilder message;

    auto foo = message.initRoot<Foo>();
    foo.setAnswer(42);
    return 0;
}

Relevant File Tags

Dependencies

This module depends on the capnp module and on the capnp-rpc module if useRpc property is true. These modules are created by the Module Providers via the pkg-config tool.

Property Documentation

compilerName : string

The name of the capnp binary.

Default: "capnpc"

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 import paths that are passed to the capnpc tool via the --import-path option.

Default: []

outputDir : string

The directory where the capnpc compiler generated files are placed.

Default: product.buildDirectory + "/capnp"

useRpc : bool

Use this property to enable support for the RPC framework.

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

import qbs.Host

Project {
    CppApplication {
        Depends { name: "capnproto.cpp"; required: false }
        name: "server"
        condition: capnproto.cpp.present && qbs.targetPlatform === Host.platform()
        consoleApplication: true
        capnproto.cpp.useRpc: true

        files: [
            "calculator.capnp",
            "calculator-server.cpp"
        ]
    }
    CppApplication {
        Depends { name: "capnproto.cpp"; required: false }
        name: "client"
        condition: capnproto.cpp.present && qbs.targetPlatform === Host.platform()
        consoleApplication: true
        capnproto.cpp.useRpc: true

        files: [
            "calculator.capnp",
            "calculator-client.cpp"
        ]
    }
}

Default: false