build-ffmpeg

#!/bin/bash

# HOMEPAGE: https://github.com/markus-perl/ffmpeg-build-script
# LICENSE: https://github.com/markus-perl/ffmpeg-build-script/blob/master/LICENSE

PROGNAME=$(basename "$0")
FFMPEG_VERSION=6.0
SCRIPT_VERSION=1.46
CWD=$(pwd)
PACKAGES="$CWD/packages"
WORKSPACE="$CWD/workspace"
CFLAGS="-I$WORKSPACE/include"
LDFLAGS="-L$WORKSPACE/lib"
LDEXEFLAGS=""
EXTRALIBS="-ldl -lpthread -lm -lz"
MACOS_M1=false
CONFIGURE_OPTIONS=()
NONFREE_AND_GPL=false
LATEST=false
MANPAGES=1
CURRENT_PACKAGE_VERSION=0

# Check for Apple Silicon
if [[ ("$(uname -m)" == "arm64") && ("$OSTYPE" == "darwin"*) ]]; then
  # If arm64 AND darwin (macOS)
  export ARCH=arm64
  export MACOSX_DEPLOYMENT_TARGET=11.0
  MACOS_M1=true
fi

# Speed up the process
# Env Var NUMJOBS overrides automatic detection
if [[ -n "$NUMJOBS" ]]; then
  MJOBS="$NUMJOBS"
elif [[ -f /proc/cpuinfo ]]; then
  MJOBS=$(grep -c processor /proc/cpuinfo)
elif [[ "$OSTYPE" == "darwin"* ]]; then
  MJOBS=$(sysctl -n machdep.cpu.thread_count)
  CONFIGURE_OPTIONS=("--enable-videotoolbox")
  MACOS_LIBTOOL="$(which libtool)" # gnu libtool is installed in this script and need to avoid name conflict
else
  MJOBS=4
fi

make_dir() {
  remove_dir "$1"
  if ! mkdir "$1"; then
    printf "\n Failed to create dir %s" "$1"
    exit 1
  fi
}

remove_dir() {
  if [ -d "$1" ]; then
    rm -r "$1"
  fi
}

download() {
  # download url [filename[dirname]]

  DOWNLOAD_PATH="$PACKAGES"
  DOWNLOAD_FILE="${2:-"${1##*/}"}"

  if [[ "$DOWNLOAD_FILE" =~ tar. ]]; then
    TARGETDIR="${DOWNLOAD_FILE%.*}"
    TARGETDIR="${3:-"${TARGETDIR%.*}"}"
  else
    TARGETDIR="${3:-"${DOWNLOAD_FILE%.*}"}"
  fi

  if [ ! -f "$DOWNLOAD_PATH/$DOWNLOAD_FILE" ]; then
    echo "Downloading $1 as $DOWNLOAD_FILE"
    curl -L --silent -o "$DOWNLOAD_PATH/$DOWNLOAD_FILE" "$1"

    EXITCODE=$?
    if [ $EXITCODE -ne 0 ]; then
      echo ""
      echo "Failed to download $1. Exitcode $EXITCODE. Retrying in 10 seconds"
      sleep 10
      curl -L --silent -o "$DOWNLOAD_PATH/$DOWNLOAD_FILE" "$1"
    fi

    EXITCODE=$?
    if [ $EXITCODE -ne 0 ]; then
      echo ""
      echo "Failed to download $1. Exitcode $EXITCODE"
      exit 1
    fi

    echo "... Done"
  else
    echo "$DOWNLOAD_FILE has already downloaded."
  fi

  make_dir "$DOWNLOAD_PATH/$TARGETDIR"

  if [[ "$DOWNLOAD_FILE" == *"patch"* ]]; then
    return
  fi

  if [ -n "$3" ]; then
    if ! tar -xvf "$DOWNLOAD_PATH/$DOWNLOAD_FILE" -C "$DOWNLOAD_PATH/$TARGETDIR" 2>/dev/null >/dev/null; then
      echo "Failed to extract $DOWNLOAD_FILE"
      exit 1
    fi
  else
    if ! tar -xvf "$DOWNLOAD_PATH/$DOWNLOAD_FILE" -C "$DOWNLOAD_PATH/$TARGETDIR" --strip-components 1 2>/dev/null >/dev/null; then
      echo "Failed to extract $DOWNLOAD_FILE"
      exit 1
    fi
  fi

  echo "Extracted $DOWNLOAD_FILE"

  cd "$DOWNLOAD_PATH/$TARGETDIR" || (
    echo "Error has occurred."
    exit 1
  )
}

execute() {
  echo "$ $*"

  OUTPUT=$("$@" 2>&1)

  # shellcheck disable=SC2181
  if [ $? -ne 0 ]; then
    echo "$OUTPUT"
    echo ""
    echo "Failed to Execute $*" >&2
    exit 1
  fi
}

build() {
  echo ""
  echo "building $1 - version $2"
  echo "======================="
  CURRENT_PACKAGE_VERSION=$2

  if [ -f "$PACKAGES/$1.done" ]; then
    if grep -Fx "$2" "$PACKAGES/$1.done" >/dev/null; then
      echo "$1 version $2 already built. Remove $PACKAGES/$1.done lockfile to rebuild it."
      return 1
    elif $LATEST; then
      echo "$1 is outdated and will be rebuilt with latest version $2"
      return 0
    else
      echo "$1 is outdated, but will not be rebuilt. Pass in --latest to rebuild it or remove $PACKAGES/$1.done lockfile."
      return 1
    fi
  fi

  return 0
}

command_exists() {
  if ! [[ -x $(command -v "$1") ]]; then
    return 1
  fi

  return 0
}

library_exists() {
  if ! [[ -x $(pkg-config --exists --print-errors "$1" 2>&1 >/dev/null) ]]; then
    return 1
  fi

  return 0
}

build_done() {
  echo "$2" >"$PACKAGES/$1.done"
}

verify_binary_type() {
  if ! command_exists "file"; then
    return
  fi

  BINARY_TYPE=$(file "$WORKSPACE/bin/ffmpeg" | sed -n 's/^.*\:\ \(.*$\)/\1/p')
  echo ""
  case $BINARY_TYPE in
  "Mach-O 64-bit executable arm64")
    echo "Successfully built Apple Silicon (M1) for ${OSTYPE}: ${BINARY_TYPE}"
    ;;
  *)
    echo "Successfully built binary for ${OSTYPE}: ${BINARY_TYPE}"
    ;;
  esac
}

cleanup() {
  remove_dir "$PACKAGES"
  remove_dir "$WORKSPACE"
  echo "Cleanup done."
  echo ""
}

usage() {
  echo "Usage: $PROGNAME [OPTIONS]"
  echo "Options:"
  echo "  -h, --help                     Display usage information"
  echo "      --version                  Display version information"
  echo "  -b, --build                    Starts the build process"
  echo "      --enable-gpl-and-non-free  Enable GPL and non-free codecs  - https://ffmpeg.org/legal.html"
  echo "  -c, --cleanup                  Remove all working dirs"
  echo "      --latest                   Build latest version of dependencies if newer available"
  echo "      --small                    Prioritize small size over speed and usability; don't build manpages"
  echo "      --full-static              Build a full static FFmpeg binary (eg. glibc, pthreads etc...) **only Linux**"
  echo "                                 Note: Because of the NSS (Name Service Switch), glibc does not recommend static links."
  echo ""
}

echo "ffmpeg-build-script v$SCRIPT_VERSION"
echo "========================="
echo ""

while (($# > 0)); do
  case $1 in
  -h | --help)
    usage
    exit 0
    ;;
  --version)
    echo "$SCRIPT_VERSION"
    exit 0
    ;;
  -*)
    if [[ "$1" == "--build" || "$1" =~ '-b' ]]; then
      bflag='-b'
    fi
    if [[ "$1" == "--enable-gpl-and-non-free" ]]; then
      CONFIGURE_OPTIONS+=("--enable-nonfree")
      CONFIGURE_OPTIONS+=("--enable-gpl")
      NONFREE_AND_GPL=true
    fi
    if [[ "$1" == "--cleanup" || "$1" =~ '-c' && ! "$1" =~ '--' ]]; then
      cflag='-c'
      cleanup
    fi
    if [[ "$1" == "--full-static" ]]; then
      if [[ "$OSTYPE" == "darwin"* ]]; then
        echo "Error: A full static binary can only be build on Linux."
        exit 1
      fi
      LDEXEFLAGS="-static"
    fi
    if [[ "$1" == "--latest" ]]; then
      LATEST=true
    fi
    if [[ "$1" == "--small" ]]; then
      CONFIGURE_OPTIONS+=("--enable-small" "--disable-doc")
      MANPAGES=0
    fi
    shift
    ;;
  *)
    usage
    exit 1
    ;;
  esac
done

if [ -z "$bflag" ]; then
  if [ -z "$cflag" ]; then
    usage
    exit 1
  fi
  exit 0
fi

echo "Using $MJOBS make jobs simultaneously."

if $NONFREE_AND_GPL; then
  echo "With GPL and non-free codecs"
fi

if [ -n "$LDEXEFLAGS" ]; then
  echo "Start the build in full static mode."
fi

mkdir -p "$PACKAGES"
mkdir -p "$WORKSPACE"

export PATH="${WORKSPACE}/bin:$PATH"
PKG_CONFIG_PATH="$WORKSPACE/lib/pkgconfig:/usr/local/lib/x86_64-linux-gnu/pkgconfig:/usr/local/lib/pkgconfig"
PKG_CONFIG_PATH+=":/usr/local/share/pkgconfig:/usr/lib/x86_64-linux-gnu/pkgconfig:/usr/lib/pkgconfig:/usr/share/pkgconfig:/usr/lib64/pkgconfig"
export PKG_CONFIG_PATH

if ! command_exists "make"; then
  echo "make not installed."
  exit 1
fi

if ! command_exists "g++"; then
  echo "g++ not installed."
  exit 1
fi

if ! command_exists "curl"; then
  echo "curl not installed."
  exit 1
fi

if ! command_exists "cargo"; then
  echo "cargo not installed. rav1e encoder will not be available."
fi

if ! command_exists "python3"; then
  echo "python3 command not found. Lv2 filter and dav1d decoder will not be available."
fi

##
## build tools
##

if build "giflib" "5.2.1"; then
  download "https://netcologne.dl.sourceforge.net/project/giflib/giflib-5.2.1.tar.gz"
  if [[ "$OSTYPE" == "darwin"* ]]; then
    download "https://sourceforge.net/p/giflib/bugs/_discuss/thread/4e811ad29b/c323/attachment/Makefile.patch"
    execute patch -p0 --forward "${PACKAGES}/giflib-5.2.1/Makefile" "${PACKAGES}/Makefile.patch" || true
  fi
  cd "${PACKAGES}"/giflib-5.2.1 || exit
  #multicore build disabled for this library
  execute make
  execute make PREFIX="${WORKSPACE}" install
  build_done "giflib" "5.2.1"
fi

if build "pkg-config" "0.29.2"; then
  download "https://pkgconfig.freedesktop.org/releases/pkg-config-0.29.2.tar.gz"
  execute ./configure --silent --prefix="${WORKSPACE}" --with-pc-path="${WORKSPACE}"/lib/pkgconfig --with-internal-glib
  execute make -j $MJOBS
  execute make install
  build_done "pkg-config" "0.29.2"
fi

if build "yasm" "1.3.0"; then
  download "https://github.com/yasm/yasm/releases/download/v1.3.0/yasm-1.3.0.tar.gz"
  execute ./configure --prefix="${WORKSPACE}"
  execute make -j $MJOBS
  execute make install
  build_done "yasm" "1.3.0"
fi

if build "nasm" "2.16.01"; then
  download "https://www.nasm.us/pub/nasm/releasebuilds/2.16.01/nasm-2.16.01.tar.xz"
  execute ./configure --prefix="${WORKSPACE}" --disable-shared --enable-static
  execute make -j $MJOBS
  execute make install
  build_done "nasm" "2.16.01"
fi

if build "zlib" "1.2.13"; then
  download "https://zlib.net/fossils/zlib-1.2.13.tar.gz"
  execute ./configure --static --prefix="${WORKSPACE}"
  execute make -j $MJOBS
  execute make install
  build_done "zlib" "1.2.13"
fi

if build "m4" "1.4.19"; then
  download "https://ftp.gnu.org/gnu/m4/m4-1.4.19.tar.gz"
  execute ./configure --prefix="${WORKSPACE}"
  execute make -j $MJOBS
  execute make install
  build_done "m4" "1.4.19"
fi

if build "autoconf" "2.71"; then
  download "https://ftp.gnu.org/gnu/autoconf/autoconf-2.71.tar.gz"
  execute ./configure --prefix="${WORKSPACE}"
  execute make -j $MJOBS
  execute make install
  build_done "autoconf" "2.71"
fi

if build "automake" "1.16.5"; then
  download "https://ftp.gnu.org/gnu/automake/automake-1.16.5.tar.gz"
  execute ./configure --prefix="${WORKSPACE}"
  execute make -j $MJOBS
  execute make install
  build_done "automake" "1.16.5"
fi

if build "libtool" "2.4.7"; then
  download "https://ftpmirror.gnu.org/libtool/libtool-2.4.7.tar.gz"
  execute ./configure --prefix="${WORKSPACE}" --enable-static --disable-shared
  execute make -j $MJOBS
  execute make install
  build_done "libtool" "2.4.7"
fi

if $NONFREE_AND_GPL; then
  if build "openssl" "1.1.1u"; then
    download "https://www.openssl.org/source/openssl-$CURRENT_PACKAGE_VERSION.tar.gz"
    if $MACOS_M1; then
      sed -n 's/\(##### GNU Hurd\)/"darwin64-arm64-cc" => { \n    inherit_from     => [ "darwin-common", asm("aarch64_asm") ],\n    CFLAGS           => add("-Wall"),\n    cflags           => add("-arch arm64 "),\n    lib_cppflags     => add("-DL_ENDIAN"),\n    bn_ops           => "SIXTY_FOUR_BIT_LONG", \n    perlasm_scheme   => "macosx", \n}, \n\1/g' Configurations/10-main.conf
      execute ./Configure --prefix="${WORKSPACE}" no-shared no-asm darwin64-arm64-cc
    else
      execute ./config --prefix="${WORKSPACE}" --openssldir="${WORKSPACE}" --with-zlib-include="${WORKSPACE}"/include/ --with-zlib-lib="${WORKSPACE}"/lib no-shared zlib
    fi
    execute make -j $MJOBS
    execute make install_sw
    build_done "openssl" $CURRENT_PACKAGE_VERSION
  fi
  CONFIGURE_OPTIONS+=("--enable-openssl")
else
  if build "gmp" "6.2.1"; then
    download "https://ftp.gnu.org/gnu/gmp/gmp-6.2.1.tar.xz"
    execute ./configure --prefix="${WORKSPACE}" --disable-shared --enable-static
    execute make -j $MJOBS
    execute make install
    build_done "gmp" "6.2.1"
  fi

  if build "nettle" "3.8.1"; then
    download "https://ftp.gnu.org/gnu/nettle/nettle-3.8.1.tar.gz"
    execute ./configure --prefix="${WORKSPACE}" --disable-shared --enable-static --disable-openssl --disable-documentation --libdir="${WORKSPACE}"/lib CPPFLAGS="${CFLAGS}" LDFLAGS="${LDFLAGS}"
    execute make -j $MJOBS
    execute make install
    build_done "nettle" "3.8.1"
  fi

  if [[ ! $ARCH == 'arm64' ]]; then
    if build "gnutls" "3.7.9"; then
      download "https://www.gnupg.org/ftp/gcrypt/gnutls/v3.7/gnutls-3.7.9.tar.xz"
      execute ./configure --prefix="${WORKSPACE}" --disable-shared --enable-static --disable-doc --disable-tools --disable-cxx --disable-tests --disable-gtk-doc-html --disable-libdane --disable-nls --enable-local-libopts --disable-guile --with-included-libtasn1 --with-included-unistring --without-p11-kit CPPFLAGS="${CFLAGS}" LDFLAGS="${LDFLAGS}"
      execute make -j $MJOBS
      execute make install
      build_done "gnutls" "3.7.9"
    fi
    # CONFIGURE_OPTIONS+=("--enable-gmp" "--enable-gnutls")
  fi
fi

if build "cmake" "3.26.4"; then
  download "https://github.com/Kitware/CMake/releases/download/v$CURRENT_PACKAGE_VERSION/cmake-$CURRENT_PACKAGE_VERSION.tar.gz"
  execute ./configure --prefix="${WORKSPACE}" --parallel="${MJOBS}" -- -DCMAKE_USE_OPENSSL=OFF
  execute make -j $MJOBS
  execute make install
  build_done "cmake" $CURRENT_PACKAGE_VERSION
fi

if command_exists "python3"; then
  if command_exists "pip3"; then
    # meson and ninja can be installed via pip3
    execute pip3 install pip setuptools --quiet --upgrade --no-cache-dir --disable-pip-version-check
    for r in meson ninja; do
      if ! command_exists ${r}; then
        execute pip3 install ${r} --quiet --upgrade --no-cache-dir --disable-pip-version-check
      fi
      export PATH=$PATH:~/Library/Python/3.9/bin
    done
  fi
fi

if $NONFREE_AND_GPL; then

  if build "x264" "941cae6d"; then
    download "https://code.videolan.org/videolan/x264/-/archive/941cae6d1d6d6344c9a1d27440eaf2872b18ca9a/x264-941cae6d1d6d6344c9a1d27440eaf2872b18ca9a.tar.gz" "x264-941cae6d.tar.gz"
    cd "${PACKAGES}"/x264-941cae6d || exit

    if [[ "$OSTYPE" == "linux-gnu" ]]; then
      execute ./configure --prefix="${WORKSPACE}" --enable-static --enable-pic CXXFLAGS="-fPIC ${CXXFLAGS}"
    else
      execute ./configure --prefix="${WORKSPACE}" --enable-static --enable-pic
    fi

    execute make -j $MJOBS
    execute make install
    execute make install-lib-static

    build_done "x264" "941cae6d"
  fi
  CONFIGURE_OPTIONS+=("--enable-libx264")
fi

##
## audio library
##

if command_exists "python3"; then

  if command_exists "meson"; then

    if build "lv2" "1.18.10"; then
      download "https://lv2plug.in/spec/lv2-1.18.10.tar.xz" "lv2-1.18.10.tar.xz"
      execute meson build --prefix="${WORKSPACE}" --buildtype=release --default-library=static --libdir="${WORKSPACE}"/lib
      execute ninja -C build
      execute ninja -C build install
      build_done "lv2" "1.18.10"
    fi
    if build "waflib" "b600c92"; then
      download "https://gitlab.com/drobilla/autowaf/-/archive/b600c928b221a001faeab7bd92786d0b25714bc8/autowaf-b600c928b221a001faeab7bd92786d0b25714bc8.tar.gz" "autowaf.tar.gz"
      build_done "waflib" "b600c92"
    fi
    if build "serd" "0.30.16"; then
      download "https://gitlab.com/drobilla/serd/-/archive/v0.30.16/serd-v0.30.16.tar.gz" "serd-v0.30.16.tar.gz"
      execute meson build --prefix="${WORKSPACE}" --buildtype=release --default-library=static --libdir="${WORKSPACE}"/lib
      execute ninja -C build
      execute ninja -C build install
      build_done "serd" "0.30.16"
    fi
    if build "pcre" "8.45"; then
      download "https://altushost-swe.dl.sourceforge.net/project/pcre/pcre/8.45/pcre-8.45.tar.gz" "pcre-8.45.tar.gz"
      execute ./configure --prefix="${WORKSPACE}" --disable-shared --enable-static
      execute make -j $MJOBS
      execute make install
      build_done "pcre" "8.45"
    fi
    if build "sord" "0.16.14"; then
      download "https://gitlab.com/drobilla/sord/-/archive/v0.16.14/sord-v0.16.14.tar.gz" "sord-v0.16.14.tar.gz"
      execute meson build --prefix="${WORKSPACE}" --buildtype=release --default-library=static --libdir="${WORKSPACE}"/lib
      execute ninja -C build
      execute ninja -C build install
      build_done "sord" "0.16.14"
    fi
    if build "sratom" "0.6.14"; then
      download "https://gitlab.com/lv2/sratom/-/archive/v0.6.14/sratom-v0.6.14.tar.gz" "sratom-v0.6.14.tar.gz"
      execute meson build --prefix="${WORKSPACE}" --buildtype=release --default-library=static --libdir="${WORKSPACE}"/lib
      execute ninja -C build
      execute ninja -C build install
      build_done "sratom" "0.6.14"
    fi
    if build "lilv" "0.24.20"; then
      download "https://gitlab.com/lv2/lilv/-/archive/v0.24.20/lilv-v0.24.20.tar.gz" "lilv-v0.24.20.tar.gz"
      execute meson build --prefix="${WORKSPACE}" --buildtype=release --default-library=static --libdir="${WORKSPACE}"/lib
      execute ninja -C build
      execute ninja -C build install
      build_done "lilv" "0.24.20"
    fi
    CFLAGS+=" -I$WORKSPACE/include/lilv-0"

    CONFIGURE_OPTIONS+=("--enable-lv2")

  fi
fi

if build "opencore" "0.1.6"; then
  download "https://cfhcable.dl.sourceforge.net/project/opencore-amr/opencore-amr/opencore-amr-0.1.6.tar.gz"
  execute ./configure --prefix="${WORKSPACE}" --disable-shared --enable-static
  execute make -j $MJOBS
  execute make install

  build_done "opencore" "0.1.6"
fi
CONFIGURE_OPTIONS+=("--enable-libopencore_amrnb" "--enable-libopencore_amrwb")

if build "lame" "3.100"; then
  download "https://sourceforge.net/projects/lame/files/lame/3.100/lame-3.100.tar.gz/download?use_mirror=gigenet" "lame-3.100.tar.gz"
  execute ./configure --prefix="${WORKSPACE}" --disable-shared --enable-static
  execute make -j $MJOBS
  execute make install

  build_done "lame" "3.100"
fi
CONFIGURE_OPTIONS+=("--enable-libmp3lame")

if build "opus" "1.3.1"; then
  download "https://archive.mozilla.org/pub/opus/opus-1.3.1.tar.gz"
  execute ./configure --prefix="${WORKSPACE}" --disable-shared --enable-static
  execute make -j $MJOBS
  execute make install

  build_done "opus" "1.3.1"
fi
CONFIGURE_OPTIONS+=("--enable-libopus")

if build "libogg" "1.3.5"; then
  download "https://ftp.osuosl.org/pub/xiph/releases/ogg/libogg-1.3.5.tar.xz"
  execute ./configure --prefix="${WORKSPACE}" --disable-shared --enable-static
  execute make -j $MJOBS
  execute make install
  build_done "libogg" "1.3.5"
fi

if build "libvorbis" "1.3.7"; then
  download "https://ftp.osuosl.org/pub/xiph/releases/vorbis/libvorbis-1.3.7.tar.gz"
  execute ./configure --prefix="${WORKSPACE}" --with-ogg-libraries="${WORKSPACE}"/lib --with-ogg-includes="${WORKSPACE}"/include/ --enable-static --disable-shared --disable-oggtest
  execute make -j $MJOBS
  execute make install

  build_done "libvorbis" "1.3.7"
fi
CONFIGURE_OPTIONS+=("--enable-libvorbis")

if build "libtheora" "1.1.1"; then
  download "https://ftp.osuosl.org/pub/xiph/releases/theora/libtheora-1.1.1.tar.gz"
  sed "s/-fforce-addr//g" configure >configure.patched
  chmod +x configure.patched
  mv configure.patched configure

  if ! $MACOS_M1; then
    ##BEGIN CONFIG.GUESS PATCH -- Updating config.guess file. Which allowed me to compile on aarch64 (ARMv8) [linux kernel 4.9 Ubuntu 20.04]
    rm config.guess
    curl -L --silent -o "config.guess" "https://raw.githubusercontent.com/gcc-mirror/gcc/master/config.guess"
    chmod +x config.guess
    ##END OF CONFIG.GUESS PATCH
  fi

  execute ./configure --prefix="${WORKSPACE}" --with-ogg-libraries="${WORKSPACE}"/lib --with-ogg-includes="${WORKSPACE}"/include/ --with-vorbis-libraries="${WORKSPACE}"/lib --with-vorbis-includes="${WORKSPACE}"/include/ --enable-static --disable-shared --disable-oggtest --disable-vorbistest --disable-examples --disable-asm --disable-spec
  execute make -j $MJOBS
  execute make install

  build_done "libtheora" "1.1.1"
fi
CONFIGURE_OPTIONS+=("--enable-libtheora")

if $NONFREE_AND_GPL; then
  if build "fdk_aac" "2.0.2"; then
    download "https://sourceforge.net/projects/opencore-amr/files/fdk-aac/fdk-aac-2.0.2.tar.gz/download?use_mirror=gigenet" "fdk-aac-2.0.2.tar.gz"
    execute ./configure --prefix="${WORKSPACE}" --disable-shared --enable-static --enable-pic
    execute make -j $MJOBS
    execute make install

    build_done "fdk_aac" "2.0.2"
  fi
  CONFIGURE_OPTIONS+=("--enable-libfdk-aac")
fi

##
## FFmpeg
##

EXTRA_VERSION=""
if [[ "$OSTYPE" == "darwin"* ]]; then
  EXTRA_VERSION="${FFMPEG_VERSION}"
fi

if [ -d "$CWD/.git" ]; then
  echo -e "\nTemporarily moving .git dir to .git.bak to workaround ffmpeg build bug" #causing ffmpeg version number to be wrong
  mv "$CWD/.git" "$CWD/.git.bak"
  # if build fails below, .git will remain in the wrong place...
fi

build "ffmpeg" "$FFMPEG_VERSION"
download "https://github.com/FFmpeg/FFmpeg/archive/refs/heads/release/$FFMPEG_VERSION.tar.gz" "FFmpeg-release-$FFMPEG_VERSION.tar.gz"
# shellcheck disable=SC2086
./configure "${CONFIGURE_OPTIONS[@]}" \
  --disable-debug \
  --disable-shared \
  --enable-pthreads \
  --enable-static \
  --enable-version3 \
  --extra-cflags="${CFLAGS}" \
  --extra-ldexeflags="${LDEXEFLAGS}" \
  --extra-ldflags="${LDFLAGS}" \
  --extra-libs="${EXTRALIBS}" \
  --pkgconfigdir="$WORKSPACE/lib/pkgconfig" \
  --pkg-config-flags="--static" \
  --prefix="${WORKSPACE}" \
  --extra-version="${EXTRA_VERSION}"

execute make -j $MJOBS
execute make install

if [ -d "$CWD/.git.bak" ]; then
  mv "$CWD/.git.bak" "$CWD/.git"
fi

INSTALL_FOLDER="/usr"  # not recommended, overwrites system ffmpeg package
if [[ "$OSTYPE" == "darwin"* ]]; then
  INSTALL_FOLDER="/usr/local"
else
  if [ -d "$HOME/.local" ]; then  # systemd-standard user path
    INSTALL_FOLDER="$HOME/.local"
  elif [ -d "/usr/local" ]; then
    INSTALL_FOLDER="/usr/local"
  fi
fi

verify_binary_type

echo ""
echo "Building done. The following binaries can be found here:"
echo "- ffmpeg: $WORKSPACE/bin/ffmpeg"
echo "- ffprobe: $WORKSPACE/bin/ffprobe"
echo "- ffplay: $WORKSPACE/bin/ffplay"
echo ""

INSTALL_NOW=0
if [[ "$AUTOINSTALL" == "yes" ]]; then
  INSTALL_NOW=1
elif [[ ! "$SKIPINSTALL" == "yes" ]]; then
  read -r -p "Install these binaries to your $INSTALL_FOLDER folder? Existing binaries will be replaced. [Y/n] " response
  case $response in
    "" | [yY][eE][sS] | [yY])
      INSTALL_NOW=1
    ;;
  esac
fi

if [ "$INSTALL_NOW" = 1 ]; then
  if command_exists "sudo" && [[ $INSTALL_FOLDER == /usr* ]]; then
    SUDO=sudo
  fi
  $SUDO cp "$WORKSPACE/bin/ffmpeg" "$INSTALL_FOLDER/bin/ffmpeg"
  $SUDO cp "$WORKSPACE/bin/ffprobe" "$INSTALL_FOLDER/bin/ffprobe"
  $SUDO cp "$WORKSPACE/bin/ffplay" "$INSTALL_FOLDER/bin/ffplay"
  if [ $MANPAGES = 1 ]; then
    $SUDO mkdir -p "$INSTALL_FOLDER/share/man/man1"
    $SUDO cp "$WORKSPACE/share/man/man1"/ff* "$INSTALL_FOLDER/share/man/man1"
    if command_exists "mandb"; then
      $SUDO mandb -q
    fi
  fi
  echo "Done. FFmpeg is now installed to your system."
fi

exit 0