#!/usr/bin/env bash set -xeuo pipefail # if root or if sudo/unavailable, define an empty variableif [ "$(id -u)" -eq 0 ]then maysudo=''else maysudo="$(command -v sudo || command -v doas || true)"fi function finalize {  # after packages install (curl, etc), get the rust toolchain  which rustup > /dev/null 2>&1 || curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh -s -- -y  cat <<EOFNote: It's recommended to install and configure Wild or Mold for faster builds.      Run script/install-wild or script/install-mold. Finished installing Linux dependencies with script/linuxEOF} # Ubuntu, Debian, Mint, Kali, Pop!_OS, Raspbian, etc.apt=$(command -v apt-get || true)if [[ -n $apt ]]; then  deps=(    gcc    g++    libasound2-dev    libfontconfig-dev    libgit2-dev    libglib2.0-dev    libssl-dev    libva-dev    libvulkan1    libwayland-dev    libx11-xcb-dev    libxkbcommon-x11-dev    libzstd-dev    make    cmake    clang    lld    llvm    jq    git    curl    gettext-base    elfutils    libsqlite3-dev    musl-tools    musl-dev    build-essential  )  if (grep -qP 'PRETTY_NAME="(Debian|Raspbian).+13' /etc/os-release); then      # libstdc++-14-dev is in build-essential      deps+=( mold )  elif (grep -qP 'PRETTY_NAME="(Linux Mint 22|.+24\.(04|10))' /etc/os-release); then    deps+=( mold libstdc++-14-dev )  elif (grep -qP 'PRETTY_NAME="((Debian|Raspbian).+12|Linux Mint 21|.+22\.04)' /etc/os-release); then    deps+=( mold libstdc++-12-dev )  elif (grep -qP 'PRETTY_NAME="((Debian|Raspbian).+11|Linux Mint 20|.+20\.04)' /etc/os-release); then    # Ubuntu 20.04 ships clang-10 and libstdc++-10 which lack adequate C++20    # support for building webrtc-sys (requires -std=c++20, lambdas in    # unevaluated contexts from clang 17+, and working std::ranges in the    # stdlib).    # Note: the prebuilt libwebrtc.a is compiled with libstdc++, so we must    # use libstdc++ (not libc++) to avoid ABI mismatches at link time.     # libstdc++-11-dev (headers with working pointer_traits/contiguous_range)    # is only available from the ubuntu-toolchain-r PPA. Add the source list    # and GPG key manually instead of using add-apt-repository, whose HKP    # keyserver lookups (port 11371) frequently time out in CI.    $maysudo "$apt" install -y curl gnupg    codename=$(lsb_release -cs)    echo "deb https://ppa.launchpadcontent.net/ubuntu-toolchain-r/test/ubuntu $codename main" | \      $maysudo tee /etc/apt/sources.list.d/ubuntu-toolchain-r-test.list > /dev/null    curl -fsSL 'https://keyserver.ubuntu.com/pks/lookup?op=get&search=0x1E9377A2BA9EF27F' | \      sed -n '/-----BEGIN PGP PUBLIC KEY BLOCK-----/,/-----END PGP PUBLIC KEY BLOCK-----/p' | \      $maysudo gpg --dearmor -o /etc/apt/trusted.gpg.d/ubuntu-toolchain-r-test.gpg    deps+=( clang-18 libstdc++-11-dev )  fi   $maysudo "$apt" update  $maysudo "$apt" install -y "${deps[@]}"   finalize  exit 0fi # Fedora, CentOS, RHEL, Alma, Amazon 2023, Oracle, etc.dnf=$(command -v dnf || true)# Old Redhat (yum only): Amazon Linux 2, Oracle Linux 7, etc.yum=$(command -v yum || true) if [[ -n $dnf ]] || [[ -n $yum ]]; then  pkg_cmd="${dnf:-${yum}}"  deps=(    musl-gcc    gcc    clang    cmake    alsa-lib-devel    fontconfig-devel    glib2-devel    libva-devel    wayland-devel    libxcb-devel    libxkbcommon-x11-devel    openssl-devel    libzstd-devel    vulkan-loader    sqlite-devel    jq    git    tar  )  # perl used for building openssl-sys crate. See: https://docs.rs/openssl/latest/openssl/  if grep -qP '^ID="?(fedora)' /etc/os-release; then    deps+=(      perl-FindBin      perl-IPC-Cmd      perl-File-Compare      perl-File-Copy      mold    )  elif grep -qP '^ID="?(rhel|rocky|alma|centos|ol)' /etc/os-release; then    deps+=( perl-interpreter )  fi   # gcc-c++ is g++ on RHEL8 and 8.x clones  if grep -qP '^ID="?(rhel|rocky|alma|centos|ol)' /etc/os-release \      && grep -qP '^VERSION_ID="?(8)' /etc/os-release; then    deps+=( gcc-c++ )  else    deps+=( g++ )  fi   # libxkbcommon-x11-devel is in a non-default repo on RHEL 8.x/9.x (except on AmazonLinux)  if grep -qP '^VERSION_ID="?(8|9)' /etc/os-release && grep -qP '^ID="?(rhel|rocky|centos|alma|ol)' /etc/os-release; then    $maysudo dnf install -y 'dnf-command(config-manager)'    if grep -qP '^PRETTY_NAME="(AlmaLinux 8|Rocky Linux 8)' /etc/os-release; then      $maysudo dnf config-manager --set-enabled powertools    elif grep -qP '^PRETTY_NAME="((AlmaLinux|Rocky|CentOS Stream) 9|Red Hat.+(8|9))' /etc/os-release; then      $maysudo dnf config-manager --set-enabled crb    elif grep -qP '^PRETTY_NAME="Oracle Linux Server 8' /etc/os-release; then      $maysudo dnf config-manager --set-enabled ol8_codeready_builder    elif grep -qP '^PRETTY_NAME="Oracle Linux Server 9' /etc/os-release; then      $maysudo dnf config-manager --set-enabled ol9_codeready_builder    else      echo "Unexpected distro" && grep 'PRETTY_NAME' /etc/os-release && exit 1    fi  fi   $maysudo "$pkg_cmd" install -y "${deps[@]}"  finalize  exit 0fi # openSUSE# https://software.opensuse.org/zyp=$(command -v zypper || true)if [[ -n $zyp ]]; then  deps=(    alsa-devel    clang    cmake    fontconfig-devel    gcc    libva-devel    gcc-c++    glib2-devel    git    gzip    jq    libvulkan1    libx11-devel    libxcb-devel    libxkbcommon-devel    libxkbcommon-x11-devel    libzstd-devel    make    mold    openssl-devel    sqlite3-devel    tar    wayland-devel    xcb-util-devel  )  $maysudo "$zyp" install -y "${deps[@]}"  finalize  exit 0fi # Arch, Manjaro, etc.# https://archlinux.org/packagespacman=$(command -v pacman || true)if [[ -n $pacman ]]; then  deps=(    gcc    clang    musl    cmake    alsa-lib    fontconfig    glib2    libva    wayland    libgit2    libxcb    libxkbcommon-x11    openssl    zstd    pkgconf    mold    sqlite    jq    git  )  $maysudo "$pacman" -Syu --needed --noconfirm "${deps[@]}"  finalize  exit 0fi # Void# https://voidlinux.org/packages/xbps=$(command -v xbps-install || true)if [[ -n $xbps ]]; then  deps=(    gettext-devel    clang    cmake    jq    elfutils-devel    gcc    alsa-lib-devel    fontconfig-devel    glib-devel    libva-devel    libxcb-devel    libxkbcommon-devel    libzstd-devel    openssl-devel    wayland-devel    vulkan-loader    mold    sqlite-devel  )  $maysudo "$xbps" -Syu "${deps[@]}"  finalize  exit 0fi # Gentoo# https://packages.gentoo.org/emerge=$(command -v emerge || true)if [[ -n $emerge ]]; then  deps=(    app-arch/zstd    app-misc/jq    dev-libs/glib    dev-libs/openssl    dev-libs/wayland    dev-util/cmake    media-libs/alsa-lib    media-libs/fontconfig    media-libs/libva    media-libs/vulkan-loader    x11-libs/libxcb    x11-libs/libxkbcommon    sys-devel/mold    dev-db/sqlite  )  $maysudo "$emerge" -u "${deps[@]}"  finalize  exit 0fi echo "Unsupported Linux distribution in script/linux"exit 1