为 AWS lambda 构建具有 lame 和 flac 支持的静态 sox

Question

我正在尝试在 AWS lambda 函数中使用 sox 将 FLAC 文件转换为 MP3，但我似乎无法构建支持 FLAC 的 sox 版本。

我找到了this 我一直在使用的很棒的解决方案，但它不支持 FLAC。

我已经在网上搜索了替代方案，但似乎没有任何效果。我还读到在某些阶段 FLAC 支持丢失但应该已修复。 我仍在寻找答案，但我们不胜感激。

Answer 1

您需要将 libvorbis 和 flac 库添加到您的静态构建并标记 sox 构建以包含它们。我已根据您的示例问题对脚本进行了更改，以向您展示这是如何完成的。

    sudo yum update
    sudo yum install gcc44 gcc-c++ libgcc44 cmake –y

    # now grab sox and its dependencies
    mkdir -p deps
    mkdir -p deps/unpacked
    mkdir -p deps/built
    mkdir -p deps/built/libmad
    mkdir -p deps/built/sox
    mkdir -p deps/built/lame
    mkdir -p deps/built/libvorbis
    mkdir -p deps/built/flac
    wget -O deps/sox-14.4.2.tar.bz2 "http://downloads.sourceforge.net/project/sox/sox/14.4.2/sox-14.4.2.tar.bz2?r=http%3A%2F%2Fsourceforge.net%2Fprojects%2Fsox%2Ffiles%2Fsox%2F14.4.2%2F&ts=1416316415&use_mirror=heanet"
    wget -O deps/libmad-0.15.1b.tar.gz "http://downloads.sourceforge.net/project/mad/libmad/0.15.1b/libmad-0.15.1b.tar.gz?r=http%3A%2F%2Fsourceforge.net%2Fprojects%2Fmad%2Ffiles%2Flibmad%2F0.15.1b%2F&ts=1416316482&use_mirror=heanet"
    wget -O deps/lame-3.99.5.tar.gz "http://downloads.sourceforge.net/project/lame/lame/3.99/lame-3.99.5.tar.gz?r=http%3A%2F%2Fsourceforge.net%2Fprojects%2Flame%2Ffiles%2Flame%2F3.99%2F&ts=1416316457&use_mirror=kent"
    wget -O deps/libvorbis-1.3.5.tar.xz "http://downloads.xiph.org/releases/vorbis/libvorbis-1.3.5.tar.xz"
    wget -O deps/flac-1.3.2.tar.xz "https://superb-dca2.dl.sourceforge.net/project/flac/flac-src/flac-1.3.2.tar.xz"

    # unpack the dependencie
    pushd deps/unpacked
    tar xvfp ../sox-14.4.2.tar.bz2
    tar xvfp ../libmad-0.15.1b.tar.gz
    tar xvfp ../lame-3.99.5.tar.gz
    tar xvfp ../libvorbis-1.3.5.tar.xz
    tar xvfp ../flac-1.3.2.tar.xz
    popd

    # build libmad, statically
    pushd deps/unpacked/libmad-0.15.1b
    ./configure --disable-shared --enable-static --prefix=$(realpath ../../built/libmad)
    # Patch makefile to remove -fforce-mem
    sed s/-fforce-mem//g < Makefile > Makefile.patched
    cp Makefile.patched Makefile
    make
    make install
    popd

    # build lame, statically
    pushd deps/unpacked/lame-3.99.5
    ./configure --disable-shared --enable-static --prefix=$(realpath ../../built/lame)
    make
    make install
    popd

    # build libvorbis, statically
    pushd deps/unpacked/libvorbis-1.3.5
    ./configure --disable-shared --enable-static --prefix=$(realpath ../../built/libvorbis)
    make
    make install
    popd

    # build flac, statically
    pushd deps/unpacked/flac-1.3.2
    ./configure --disable-shared --enable-static --prefix=$(realpath ../../built/flac)
    make
    make install
    popd

    # build sox, statically
    pushd deps/unpacked/sox-14.4.2
    ./configure --disable-shared --enable-static --prefix=$(realpath ../../built/sox) \
        LDFLAGS="-L$(realpath ../../built/libmad/lib) -L$(realpath ../../built/lame/lib) -L$(realpath ../../built/libvorbis/lib) -L$(realpath ../../built/flac/lib)" \
        CPPFLAGS="-I$(realpath ../../built/libmad/include) -I$(realpath ../../built/lame/include) -I$(realpath ../../built/libvorbis/include) -I$(realpath ../../built/flac/include)" \
        --with-mad --with-lame --with-libvorbis --with-flac --without-oggvorbis --without-oss --without-sndfile --without-gomp
    make -s
    make install
    popd

    cp deps/built/sox/bin/sox .
    rm -rf deps/built
    rm -rf deps/unpacked