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    2.11.0 • Public • Published


    A source library xPack with files to help µOS++ builds

    This project provides files to be included during builds.

    The project is hosted on GitHub as micro-os-plus/build-helper-xpack.

    Maintainer info

    This page is addressed to developers who plan to include this source library into their own projects.

    For maintainer info, please see the README-MAINTAINER file.


    As a source library xPack, the easiest way to add it to a project is via xpm, but it can also be used as any Git project, for example as a submodule.


    A recent xpm, which is a portable Node.js command line application.

    For details please follow the instructions in the xPack install page.


    Note: the package will be available from at a later date.

    For now, it can be installed from GitHub:

    cd my-project
    xpm init # Unless a package.json is already present
    xpm install github:micro-os-plus/build-helper-xpack

    When ready, this package will be available as @micro-os-plus/build-helper from the registry:

    cd my-project
    xpm init # Unless a package.json is already present
    xpm install @micro-os-plus/build-helper@latest
    ls -l xpacks/micro-os-plus-build-helper

    Git submodule

    If, for any reason, xpm is not available, the next recommended solution is to link it as a Git submodule below an xpacks folder.

    cd my-project
    git init # Unless already a Git project
    mkdir -p xpacks
    git submodule add \


    Apart from the unused master branch, there are two active branches:

    • xpack, with the latest stable version (default)
    • xpack-develop, with the current development version

    All development is done in the xpack-develop branch, and contributions via Pull Requests should be directed to this branch.

    When new releases are published, the xpack-develop branch is merged into xpack.

    Developer info


    The xPack Build Framework is neutral to the actual system build generator used.

    Currently all µOS++ source libraries support both CMake and meson, and an internal xPack builder is planned.

    Build & integration info


    Known problems

    • none




    µOS++ sources should comply with C++ 20 and C 11

    • GCC: -std=c++-20 or -std=c11
    • clang: -std=c++-20 or -std=c11

    It should be possible to compile them with:

    The recommended versions are GCC 11, AppleClang 12.

    Change log - incompatible changes

    According to semver rules:

    Major version X (X.y.z | X > 0) MUST be incremented if any backwards incompatible changes are introduced to the public API.

    The incompatible changes, in reverse chronological order, are:

    • v2.x: add xpack_ prefix
    • v1.x: initial version


    The original content is released under the MIT License, with all rights reserved to Liviu Ionescu.


    npm i @micro-os-plus/build-helper

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    • ilg