4dage-ffmpeg/install-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 "$0")
VERSION=1.22
CWD=$(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=()
# 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")
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 [ -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"
  echo "======================="

  if [ -f "$PACKAGES/$1.done" ]; then
    echo "$1 already built. Remove $PACKAGES/$1.done lockfile to rebuild it."
    return 1
  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() {
  touch "$PACKAGES/$1.done"
}

verify_binary_type() {
  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 "  -c, --cleanup       Remove all working dirs"
  echo "  -f, --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 ""
}

while (($# > 0)); do
  case $1 in
  -h | --help)
    usage
    exit 0
    ;;
  --version)
    echo "$VERSION"
    exit 0
    ;;
  -*)
    if [[ "$1" == "--build" || "$1" =~ 'b' ]]; then
      bflag='-b'
    fi
    if [[ "$1" == "--cleanup" || "$1" =~ 'c' && ! "$1" =~ '--' ]]; then
      cflag='-c'
      cleanup
    fi
    if [[ "$1" == "--full-static" || "$1" =~ 'f' ]]; then
      if [[ "$OSTYPE" == "darwin"* ]]; then
        echo "Error: A full static binary can only be build on Linux."
        exit 1
      fi
      LDEXEFLAGS="-static"
    fi
    shift
    ;;
  *)
    usage
    exit 1
    ;;
  esac
done

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

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

echo "Using $MJOBS make jobs simultaneously."

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="/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 "python"; then
  echo "Python command not found. Lv2 filter will not be available."
fi

##
## build tools
##

if build "pkg-config"; 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"
fi

if command_exists "python"; then

  if build "lv2"; then
    download "https://lv2plug.in/spec/lv2-1.18.0.tar.bz2" "lv2-1.18.0.tar.bz2"
    execute ./waf configure --prefix="${WORKSPACE}" --lv2-user
    execute ./waf
    execute ./waf install

    build_done "lv2"
  fi

  if build "waflib"; then
    download "https://gitlab.com/drobilla/autowaf/-/archive/cc37724b9bfa889baebd8cb10f38b8c7cab83e37/autowaf-cc37724b9bfa889baebd8cb10f38b8c7cab83e37.tar.gz" "autowaf.tar.gz"
    build_done "waflib"
  fi

  if build "serd"; then
    download "https://gitlab.com/drobilla/serd/-/archive/v0.30.6/serd-v0.30.6.tar.gz" "serd-v0.30.6.tar.gz"
    execute cp -r "${PACKAGES}"/autowaf/* "${PACKAGES}/serd-v0.30.6/waflib/"
    execute ./waf configure --prefix="${WORKSPACE}" --static --no-shared --no-posix
    execute ./waf
    execute ./waf install
    build_done "serd"
  fi

  if build "pcre"; then
    download "https://ftp.pcre.org/pub/pcre/pcre-8.44.tar.gz" "pcre-8.44.tar.gz"
    execute ./configure --prefix="${WORKSPACE}" --disable-shared --enable-static
    execute make -j $MJOBS
    execute make install

    build_done "pcre"
  fi

  if build "sord"; then
    download "https://gitlab.com/drobilla/sord/-/archive/v0.16.6/sord-v0.16.6.tar.gz" "sord-v0.16.6.tar.gz"
    execute cp -r "${PACKAGES}"/autowaf/* "${PACKAGES}/sord-v0.16.6/waflib/"
    execute ./waf configure --prefix="${WORKSPACE}" CFLAGS="${CFLAGS}" --static --no-shared --no-utils
    execute ./waf CFLAGS="${CFLAGS}"
    execute ./waf install

    build_done "sord"
  fi

  if build "sratom"; then
    download "https://gitlab.com/lv2/sratom/-/archive/v0.6.6/sratom-v0.6.6.tar.gz" "sratom-v0.6.6.tar.gz"
    execute cp -r "${PACKAGES}"/autowaf/* "${PACKAGES}/sratom-v0.6.6/waflib/"
    execute ./waf configure --prefix="${WORKSPACE}" --static --no-shared
    execute ./waf
    execute ./waf install

    build_done "sratom"
  fi

  if build "lilv"; then
    download "https://gitlab.com/lv2/lilv/-/archive/v0.24.10/lilv-v0.24.10.tar.gz" "lilv-v0.24.10.tar.gz"
    execute cp -r "${PACKAGES}"/autowaf/* "${PACKAGES}/lilv-v0.24.10/waflib/"
    execute ./waf configure --prefix="${WORKSPACE}" --static --no-shared --no-utils
    execute ./waf
    execute ./waf install
    CFLAGS+=" -I$WORKSPACE/include/lilv-0"
    build_done "lilv"
  fi

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

if build "yasm"; 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"
fi

if build "nasm"; then
  download "https://www.nasm.us/pub/nasm/releasebuilds/2.15.05/nasm-2.15.05.tar.xz"
  execute ./configure --prefix="${WORKSPACE}" --disable-shared --enable-static
  execute make -j $MJOBS
  execute make install
  build_done "nasm"
fi

if build "zlib"; then
  download "https://www.zlib.net/zlib-1.2.11.tar.gz"
  execute ./configure --static --prefix="${WORKSPACE}"
  execute make -j $MJOBS
  execute make install
  build_done "zlib"
fi

if build "openssl"; then
  download "https://www.openssl.org/source/openssl-1.1.1i.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"
fi
CONFIGURE_OPTIONS+=("--enable-openssl")

if build "cmake"; then
  download "https://cmake.org/files/v3.18/cmake-3.18.4.tar.gz"
  execute ./configure --prefix="${WORKSPACE}" --system-zlib
  execute make -j $MJOBS
  execute make install
  build_done "cmake"
fi

if build "svtav1"; then
  download "https://github.com/AOMediaCodec/SVT-AV1/archive/v0.8.6.tar.gz"
  cd Build/linux || exit
  execute cmake -DCMAKE_INSTALL_PREFIX="${WORKSPACE}" -DENABLE_SHARED=off -DBUILD_SHARED_LIBS=OFF ../.. -G"Unix Makefiles" -DCMAKE_BUILD_TYPE=Release
  execute make -j $MJOBS
  execute make install
  execute cp SvtAv1Enc.pc "${WORKSPACE}/lib/pkgconfig/"
  execute cp SvtAv1Dec.pc "${WORKSPACE}/lib/pkgconfig/"
  build_done "svtav1"
fi
CONFIGURE_OPTIONS+=("--enable-libsvtav1")

##
## video library
##

if build "x264"; then
  download "https://code.videolan.org/videolan/x264/-/archive/0d754ec36013fee82978496cd56fbd48824910b3/x264-0d754ec36013fee82978496cd56fbd48824910b3.tar.gz" "x264-0d754ec.tar.gz"
  cd "${PACKAGES}"/x264-0d754ec || exit

  if [[ "$OSTYPE" == "linux-gnu" ]]; then
    execute ./configure --prefix="${WORKSPACE}" --enable-static --enable-pic CXXFLAGS="-fPIC"
  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"
fi
CONFIGURE_OPTIONS+=("--enable-libx264")

if build "x265"; then
  download "https://github.com/videolan/x265/archive/Release_3.5.tar.gz" "x265-3.5.tar.gz"
  cd build/linux || exit

  execute cmake -DCMAKE_INSTALL_PREFIX="${WORKSPACE}" -DENABLE_SHARED=off -DBUILD_SHARED_LIBS=OFF ../../source
  execute make -j $MJOBS
  execute make install

  if [ -n "$LDEXEFLAGS" ]; then
    sed -i.backup 's/-lgcc_s/-lgcc_eh/g' "${WORKSPACE}/lib/pkgconfig/x265.pc" # The -i.backup is intended and required on MacOS: https://stackoverflow.com/questions/5694228/sed-in-place-flag-that-works-both-on-mac-bsd-and-linux
  fi

  build_done "x265"
fi
CONFIGURE_OPTIONS+=("--enable-libx265")

if build "libvpx"; then
  download "https://github.com/webmproject/libvpx/archive/v1.9.0.tar.gz" "libvpx-1.9.0.tar.gz"

  if [[ "$OSTYPE" == "darwin"* ]]; then
    echo "Applying Darwin patch"
    sed "s/,--version-script//g" build/make/Makefile >build/make/Makefile.patched
    sed "s/-Wl,--no-undefined -Wl,-soname/-Wl,-undefined,error -Wl,-install_name/g" build/make/Makefile.patched >build/make/Makefile
  fi

  execute ./configure --prefix="${WORKSPACE}" --disable-unit-tests --disable-shared --as=yasm
  execute make -j $MJOBS
  execute make install

  build_done "libvpx"
fi
CONFIGURE_OPTIONS+=("--enable-libvpx")

if build "xvidcore"; then
  download "https://downloads.xvid.com/downloads/xvidcore-1.3.7.tar.gz"
  cd build/generic || exit
  execute ./configure --prefix="${WORKSPACE}" --disable-shared --enable-static
  execute make -j $MJOBS
  execute make install

  if [[ -f ${WORKSPACE}/lib/libxvidcore.4.dylib ]]; then
    execute rm "${WORKSPACE}/lib/libxvidcore.4.dylib"
  fi

  if [[ -f ${WORKSPACE}/lib/libxvidcore.so ]]; then
    execute rm "${WORKSPACE}"/lib/libxvidcore.so*
  fi

  build_done "xvidcore"
fi
CONFIGURE_OPTIONS+=("--enable-libxvid")

if build "vid_stab"; then
  download "https://github.com/georgmartius/vid.stab/archive/v1.1.0.tar.gz" "vid.stab-1.1.0.tar.gz"

  if $MACOS_M1; then

    curl -s -o "$PACKAGES/vid.stab-1.1.0/fix_cmake_quoting.patch" https://raw.githubusercontent.com/Homebrew/formula-patches/5bf1a0e0cfe666ee410305cece9c9c755641bfdf/libvidstab/fix_cmake_quoting.patch
    patch -p1 <fix_cmake_quoting.patch
  fi

  execute cmake -DBUILD_SHARED_LIBS=OFF -DCMAKE_INSTALL_PREFIX="${WORKSPACE}" -DUSE_OMP=OFF -DENABLE_SHARED=off .
  execute make
  execute make install

  build_done "vid_stab"
fi
CONFIGURE_OPTIONS+=("--enable-libvidstab")

if build "av1"; then
  download "https://aomedia.googlesource.com/aom/+archive/b52ee6d44adaef8a08f6984390de050d64df9faa.tar.gz" "av1.tar.gz" "av1"
  make_dir "$PACKAGES"/aom_build
  cd "$PACKAGES"/aom_build || exit
  if $MACOS_M1; then
    execute cmake -DENABLE_TESTS=0 -DCMAKE_INSTALL_PREFIX="${WORKSPACE}" -DCMAKE_INSTALL_LIBDIR=lib -DCONFIG_RUNTIME_CPU_DETECT=0 "$PACKAGES"/av1
  else
    execute cmake -DENABLE_TESTS=0 -DCMAKE_INSTALL_PREFIX="${WORKSPACE}" -DCMAKE_INSTALL_LIBDIR=lib "$PACKAGES"/av1
  fi
  execute make -j $MJOBS
  execute make install

  build_done "av1"
fi
CONFIGURE_OPTIONS+=("--enable-libaom")

##
## audio library
##

if build "opencore"; then
  download "https://deac-riga.dl.sourceforge.net/project/opencore-amr/opencore-amr/opencore-amr-0.1.5.tar.gz"
  execute ./configure --prefix="${WORKSPACE}" --disable-shared --enable-static
  execute make -j $MJOBS
  execute make install

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

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

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

if build "opus"; 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"
fi
CONFIGURE_OPTIONS+=("--enable-libopus")

if build "libogg"; then
  download "https://ftp.osuosl.org/pub/xiph/releases/ogg/libogg-1.3.3.tar.gz"
  execute ./configure --prefix="${WORKSPACE}" --disable-shared --enable-static
  execute make -j $MJOBS
  execute make install
  build_done "libogg"
fi

if build "libvorbis"; then
  download "https://ftp.osuosl.org/pub/xiph/releases/vorbis/libvorbis-1.3.6.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"
fi
CONFIGURE_OPTIONS+=("--enable-libvorbis")

if build "libtheora"; 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
  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"
fi
CONFIGURE_OPTIONS+=("--enable-libtheora")

if build "fdk_aac"; then
  download "https://sourceforge.net/projects/opencore-amr/files/fdk-aac/fdk-aac-2.0.1.tar.gz/download?use_mirror=gigenet" "fdk-aac-2.0.1.tar.gz"
  execute ./configure --prefix="${WORKSPACE}" --disable-shared --enable-static
  execute make -j $MJOBS
  execute make install

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

##
## image library
##

if build "libwebp"; then
  download "https://github.com/webmproject/libwebp/archive/v1.1.0.tar.gz" "libwebp-1.1.0.tar.gz"
  make_dir build
  cd build || exit
  execute cmake -DCMAKE_INSTALL_PREFIX="${WORKSPACE}" -DCMAKE_INSTALL_LIBDIR=lib -DCMAKE_INSTALL_BINDIR=bin -DCMAKE_INSTALL_INCLUDEDIR=include -DENABLE_SHARED=OFF -DENABLE_STATIC=ON ../
  execute make -j $MJOBS
  execute make install

  build_done "libwebp"
fi
CONFIGURE_OPTIONS+=("--enable-libwebp")

##
## other library
##

if build "libsdl"; then
  download "https://www.libsdl.org/release/SDL2-2.0.14.tar.gz"
  execute ./configure --prefix="${WORKSPACE}" --disable-shared --enable-static
  execute make -j $MJOBS
  execute make install

  build_done "libsdl"
fi

if build "srt"; then
  download "https://github.com/Haivision/srt/archive/v1.4.1.tar.gz" "srt-1.4.1.tar.gz"
  export OPENSSL_ROOT_DIR="${WORKSPACE}"
  export OPENSSL_LIB_DIR="${WORKSPACE}"/lib
  export OPENSSL_INCLUDE_DIR="${WORKSPACE}"/include/
  execute cmake . -DCMAKE_INSTALL_PREFIX="${WORKSPACE}" -DCMAKE_INSTALL_LIBDIR=lib -DCMAKE_INSTALL_BINDIR=bin -DCMAKE_INSTALL_INCLUDEDIR=include -DENABLE_SHARED=OFF -DENABLE_STATIC=ON -DENABLE_APPS=OFF -DUSE_STATIC_LIBSTDCXX=ON
  execute make install

  if [ -n "$LDEXEFLAGS" ]; then
    sed -i.backup 's/-lgcc_s/-lgcc_eh/g' "${WORKSPACE}"/lib/pkgconfig/srt.pc # The -i.backup is intended and required on MacOS: https://stackoverflow.com/questions/5694228/sed-in-place-flag-that-works-both-on-mac-bsd-and-linux
  fi

  build_done "srt"
fi
CONFIGURE_OPTIONS+=("--enable-libsrt")

##
## HWaccel library
##

if [[ "$OSTYPE" == "linux-gnu" ]]; then
  if command_exists "nvcc"; then
    if build "nv-codec"; then
      download "https://github.com/FFmpeg/nv-codec-headers/releases/download/n11.0.10.0/nv-codec-headers-11.0.10.0.tar.gz"
      execute make PREFIX="${WORKSPACE}"
      execute make install PREFIX="${WORKSPACE}"
      build_done "nv-codec"
    fi
    CFLAGS+=" -I/usr/local/cuda/include"
    LDFLAGS+=" -L/usr/local/cuda/lib64"
    CONFIGURE_OPTIONS+=("--enable-cuda-nvcc" "--enable-cuvid" "--enable-nvenc" "--enable-cuda-llvm")

    if [ -z "$LDEXEFLAGS" ]; then
      CONFIGURE_OPTIONS+=("--enable-libnpp") # Only libnpp cannot be statically linked.
    fi

    # https://arnon.dk/matching-sm-architectures-arch-and-gencode-for-various-nvidia-cards/
    CONFIGURE_OPTIONS+=("--nvccflags=-gencode arch=compute_52,code=sm_52")
  fi

  # Vaapi doesn't work well with static links FFmpeg.
  if [ -z "$LDEXEFLAGS" ]; then
    # If the libva development SDK is installed, enable vaapi.
    if library_exists "libva"; then
      if build "vaapi"; then
        build_done "vaapi"
      fi
      CONFIGURE_OPTIONS+=("--enable-vaapi")
    fi
  fi
fi

##
## FFmpeg
##

build "ffmpeg"
download "https://git.ffmpeg.org/gitweb/ffmpeg.git/snapshot/553eb0773763798a6b9656b621cb125e1f6edbcc.tar.gz"
# shellcheck disable=SC2086
./configure "${CONFIGURE_OPTIONS[@]}" \
  --disable-debug \
  --disable-doc \
  --disable-shared \
  --enable-gpl \
  --enable-nonfree \
  --enable-pthreads \
  --enable-static \
  --enable-small \
  --enable-version3 \
  --extra-cflags="${CFLAGS}" \
  --extra-ldexeflags="${LDEXEFLAGS}" \
  --extra-ldflags="${LDFLAGS}" \
  --extra-libs="${EXTRALIBS}" \
  --pkgconfigdir="$WORKSPACE/lib/pkgconfig" \
  --pkg-config-flags="--static" \
  --prefix="${WORKSPACE}"

execute make -j $MJOBS
execute make install

INSTALL_FOLDER="/usr/bin"
if [[ "$OSTYPE" == "darwin"* ]]; then
  INSTALL_FOLDER="/usr/local/bin"
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 ""

if [[ "$AUTOINSTALL" == "yes" ]]; then
  if command_exists "sudo"; then
    sudo cp "$WORKSPACE/bin/ffmpeg" "$INSTALL_FOLDER/ffmpeg"
    sudo cp "$WORKSPACE/bin/ffprobe" "$INSTALL_FOLDER/ffprobe"
    sudo cp "$WORKSPACE/bin/ffplay" "$INSTALL_FOLDER/ffplay"
    echo "Done. FFmpeg is now installed to your system."
  else
    cp "$WORKSPACE/bin/ffmpeg" "$INSTALL_FOLDER/ffmpeg"
    cp "$WORKSPACE/bin/ffprobe" "$INSTALL_FOLDER/ffprobe"
    sudo cp "$WORKSPACE/bin/ffplay" "$INSTALL_FOLDER/ffplay"
    echo "Done. FFmpeg is now installed to your system."
  fi
elif [[ ! "$SKIPINSTALL" == "yes" ]]; then
  read -r -p "Install these binaries to your $INSTALL_FOLDER folder? Existing binaries will be replaced. [Y/n] " response
  case $response in
  [yY][eE][sS] | [yY])
    if command_exists "sudo"; then
      sudo cp "$WORKSPACE/bin/ffmpeg" "$INSTALL_FOLDER/ffmpeg"
      sudo cp "$WORKSPACE/bin/ffprobe" "$INSTALL_FOLDER/ffprobe"
      sudo cp "$WORKSPACE/bin/ffplay" "$INSTALL_FOLDER/ffplay"
    else
      cp "$WORKSPACE/bin/ffmpeg" "$INSTALL_FOLDER/ffmpeg"
      cp "$WORKSPACE/bin/ffprobe" "$INSTALL_FOLDER/ffprobe"
      cp "$WORKSPACE/bin/ffplay" "$INSTALL_FOLDER/ffplay"
    fi
    echo "Done. FFmpeg is now installed to your system."
    ;;
  esac
fi

exit 0