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    This article is in need of a technical review.

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    Yasm is a cross-platform assembler. It is used by the Mozilla codebase to generate routines for decoding the WebM video format and JPEG images.

    Mozilla currently requires Yasm 1.1.0 or newer.

    Obtaining Yasm


    Yasm is provided in MozillaBuild 1.5.1.


    You can build Yasm from source by downloading the package here. You'll need version 1.1.0 or newer.

    Yasm is also available through HomeBrew and MacPorts. Install it by running

    brew install yasm
    # or
    sudo port install yasm

    If you install using MacPorts, make sure you have version 1.1.0 or newer by running yasm --version.  You can run

    sudo port selfupdate && sudo port upgrade yasm

    to update to the newest version.


    Yasm is available through most GNU/Linux distributions' package managers.  However, you'll need to ensure that your package manager provides at least Yasm 1.1.0; older versions may not work properly.

    On Fedora (<22)/Redhat systems, run

    sudo yum install yasm

    On Fedora 22

    sudo dnf install yasm

    On Ubuntu/Debian systems, run

    sudo apt-get install yasm 

    If a new enough version isn't available through your package manager, you can either build Yasm from source or disable the modules in Mozilla which rely on Yasm.

    Building without Yasm

    If for some reason you cannot install Yasm, you'll need to disable the WebM decoder and the optimized JPEG decoder.  Do this by adding the following lines to your mozconfig:

    ac_add_options --disable-webm
    ac_add_options --disable-libjpeg-turbo


    最終更新者: AmarOk1412,