#!/bin/sh

#

# FFmpeg configure script

#

# Copyright (c) 2000-2002 Fabrice Bellard

# Copyright (c) 2005-2008 Diego Biurrun

# Copyright (c) 2005-2008 Mans Rullgard

#

# Prevent locale nonsense from breaking basic text processing.

LC_ALL=C

export LC_ALL

# make sure we are running under a compatible shell

# try to make this part work with most shells

try_exec(){

echo "Trying shell $1"

type "$1" > /dev/null 2>&1 && exec "$@"

}

unset foo

(: ${foo%%bar}) 2> /dev/null

E1="$?"

(: ${foo?}) 2> /dev/null

E2="$?"

if test "$E1" != 0 || test "$E2" = 0; then

echo "Broken shell detected. Trying alternatives."

export FF_CONF_EXEC

if test "0$FF_CONF_EXEC" -lt 1; then

FF_CONF_EXEC=1

try_exec bash "$0" "$@"

fi

if test "0$FF_CONF_EXEC" -lt 2; then

FF_CONF_EXEC=2

try_exec ksh "$0" "$@"

fi

if test "0$FF_CONF_EXEC" -lt 3; then

FF_CONF_EXEC=3

try_exec /usr/xpg4/bin/sh "$0" "$@"

fi

echo "No compatible shell script interpreter found."

echo "This configure script requires a POSIX-compatible shell"

echo "such as bash or ksh."

echo "THIS IS NOT A BUG IN FFMPEG, DO NOT REPORT IT AS SUCH."

echo "Instead, install a working POSIX-compatible shell."

echo "Disabling this configure test will create a broken FFmpeg."

if test "$BASH_VERSION" = '2.04.0(1)-release'; then

echo "This bash version ($BASH_VERSION) is broken on your platform."

echo "Upgrade to a later version if available."

fi

exit 1

fi

test -d /usr/xpg4/bin && PATH=/usr/xpg4/bin:$PATH

show_help(){

cat <<EOF

Usage: configure [options]

Options: [defaults in brackets after descriptions]

Help options:

--help print this message

--quiet Suppress showing informative output

--list-decoders show all available decoders

--list-encoders show all available encoders

--list-hwaccels show all available hardware accelerators

--list-demuxers show all available demuxers

--list-muxers show all available muxers

--list-parsers show all available parsers

--list-protocols show all available protocols

--list-bsfs show all available bitstream filters

--list-indevs show all available input devices

--list-outdevs show all available output devices

--list-filters show all available filters

Standard options:

--logfile=FILE log tests and output to FILE [ffbuild/config.log]

--disable-logging do not log configure debug information

--fatal-warnings fail if any configure warning is generated

--prefix=PREFIX install in PREFIX [$prefix_default]

--bindir=DIR install binaries in DIR [PREFIX/bin]

--datadir=DIR install data files in DIR [PREFIX/share/ffmpeg]

--docdir=DIR install documentation in DIR [PREFIX/share/doc/ffmpeg]

--libdir=DIR install libs in DIR [PREFIX/lib]

--shlibdir=DIR install shared libs in DIR [LIBDIR]

--incdir=DIR install includes in DIR [PREFIX/include]

--mandir=DIR install man page in DIR [PREFIX/share/man]

--pkgconfigdir=DIR install pkg-config files in DIR [LIBDIR/pkgconfig]

--enable-rpath use rpath to allow installing libraries in paths

not part of the dynamic linker search path

use rpath when linking programs (USE WITH CARE)

--install-name-dir=DIR Darwin directory name for installed targets

Licensing options:

--enable-gpl allow use of GPL code, the resulting libs

and binaries will be under GPL [no]

--enable-version3 upgrade (L)GPL to version 3 [no]

--enable-nonfree allow use of nonfree code, the resulting libs

and binaries will be unredistributable [no]

Configuration options:

--disable-static do not build static libraries [no]

--enable-shared build shared libraries [no]

--enable-small optimize for size instead of speed

--disable-runtime-cpudetect disable detecting CPU capabilities at runtime (smaller binary)

--enable-gray enable full grayscale support (slower color)

--disable-swscale-alpha disable alpha channel support in swscale

--disable-all disable building components, libraries and programs

--disable-autodetect disable automatically detected external libraries [no]

Program options:

--disable-programs do not build command line programs

--disable-ffmpeg disable ffmpeg build

--disable-ffplay disable ffplay build

--disable-ffprobe disable ffprobe build

Documentation options:

--disable-doc do not build documentation

--disable-htmlpages do not build HTML documentation pages

--disable-manpages do not build man documentation pages

--disable-podpages do not build POD documentation pages

--disable-txtpages do not build text documentation pages

Component options:

--disable-avdevice disable libavdevice build

--disable-avcodec disable libavcodec build

--disable-avformat disable libavformat build

--disable-swresample disable libswresample build

--disable-swscale disable libswscale build

--disable-avfilter disable libavfilter build

--disable-pthreads disable pthreads [autodetect]

--disable-w32threads disable Win32 threads [autodetect]

--disable-os2threads disable OS/2 threads [autodetect]

--disable-network disable network support [no]

--disable-dwt disable DWT code

--disable-error-resilience disable error resilience code

--disable-lsp disable LSP code

--disable-faan disable floating point AAN (I)DCT code

--disable-iamf disable support for Immersive Audio Model

--disable-pixelutils disable pixel utils in libavutil

Individual component options:

--disable-everything disable all components listed below

--disable-encoder=NAME disable encoder NAME

--enable-encoder=NAME enable encoder NAME

--disable-encoders disable all encoders

--disable-decoder=NAME disable decoder NAME

--enable-decoder=NAME enable decoder NAME

--disable-decoders disable all decoders

--disable-hwaccel=NAME disable hwaccel NAME

--enable-hwaccel=NAME enable hwaccel NAME

--disable-hwaccels disable all hwaccels

--disable-muxer=NAME disable muxer NAME

--enable-muxer=NAME enable muxer NAME

--disable-muxers disable all muxers

--disable-demuxer=NAME disable demuxer NAME

--enable-demuxer=NAME enable demuxer NAME

--disable-demuxers disable all demuxers

--enable-parser=NAME enable parser NAME

--disable-parser=NAME disable parser NAME

--disable-parsers disable all parsers

--enable-bsf=NAME enable bitstream filter NAME

--disable-bsf=NAME disable bitstream filter NAME

--disable-bsfs disable all bitstream filters

--enable-protocol=NAME enable protocol NAME

--disable-protocol=NAME disable protocol NAME

--disable-protocols disable all protocols

--enable-indev=NAME enable input device NAME

--disable-indev=NAME disable input device NAME

--disable-indevs disable input devices

--enable-outdev=NAME enable output device NAME

--disable-outdev=NAME disable output device NAME

--disable-outdevs disable output devices

--disable-devices disable all devices

--enable-filter=NAME enable filter NAME

--disable-filter=NAME disable filter NAME

--disable-filters disable all filters

External library support:

Using any of the following switches will allow FFmpeg to link to the

corresponding external library. All the components depending on that library

will become enabled, if all their other dependencies are met and they are not

explicitly disabled. E.g. --enable-libopus will enable linking to

libopus and allow the libopus encoder to be built, unless it is

specifically disabled with --disable-encoder=libopus.

Note that only the system libraries are auto-detected. All the other external

libraries must be explicitly enabled.

Also note that the following help text describes the purpose of the libraries

themselves, not all their features will necessarily be usable by FFmpeg.

--disable-alsa disable ALSA support [autodetect]

--disable-appkit disable Apple AppKit framework [autodetect]

--disable-avfoundation disable Apple AVFoundation framework [autodetect]

--enable-avisynth enable reading of AviSynth script files [no]

--disable-bzlib disable bzlib [autodetect]

--disable-coreimage disable Apple CoreImage framework [autodetect]

--enable-chromaprint enable audio fingerprinting with chromaprint [no]

--enable-frei0r enable frei0r video filtering [no]

--enable-gcrypt enable gcrypt, needed for rtmp(t)e support

if openssl, librtmp or gmp is not used [no]

--enable-gmp enable gmp, needed for rtmp(t)e support

if openssl or librtmp is not used [no]

--enable-gnutls enable gnutls, needed for https support

if openssl, libtls or mbedtls is not used [no]

--disable-iconv disable iconv [autodetect]

--enable-jni enable JNI support [no]

--enable-ladspa enable LADSPA audio filtering [no]

--enable-lcms2 enable ICC profile support via LittleCMS 2 [no]

--enable-libaom enable AV1 video encoding/decoding via libaom [no]

--enable-libaribb24 enable ARIB text and caption decoding via libaribb24 [no]

--enable-libaribcaption enable ARIB text and caption decoding via libaribcaption [no]

--enable-libass enable libass subtitles rendering,

needed for subtitles and ass filter [no]

--enable-libbluray enable BluRay reading using libbluray [no]

--enable-libbs2b enable bs2b DSP library [no]

--enable-libcaca enable textual display using libcaca [no]

--enable-libcelt enable CELT decoding via libcelt [no]

--enable-libcdio enable audio CD grabbing with libcdio [no]

--enable-libcodec2 enable codec2 en/decoding using libcodec2 [no]

--enable-libdav1d enable AV1 decoding via libdav1d [no]

--enable-libdavs2 enable AVS2 decoding via libdavs2 [no]

--enable-libdc1394 enable IIDC-1394 grabbing using libdc1394

and libraw1394 [no]

--enable-libdvdnav enable libdvdnav, needed for DVD demuxing [no]

--enable-libdvdread enable libdvdread, needed for DVD demuxing [no]

--enable-libfdk-aac enable AAC de/encoding via libfdk-aac [no]

--enable-libflite enable flite (voice synthesis) support via libflite [no]

--enable-libfontconfig enable libfontconfig, useful for drawtext filter [no]

--enable-libfreetype enable libfreetype, needed for drawtext filter [no]

--enable-libfribidi enable libfribidi, improves drawtext filter [no]

--enable-libharfbuzz enable libharfbuzz, needed for drawtext filter [no]

--enable-libglslang enable GLSL->SPIRV compilation via libglslang [no]

--enable-libgme enable Game Music Emu via libgme [no]

--enable-libgsm enable GSM de/encoding via libgsm [no]

--enable-libiec61883 enable iec61883 via libiec61883 [no]

--enable-libilbc enable iLBC de/encoding via libilbc [no]

--enable-libjack enable JACK audio sound server [no]

--enable-libjxl enable JPEG XL de/encoding via libjxl [no]

--enable-libklvanc enable Kernel Labs VANC processing [no]

--enable-libkvazaar enable HEVC encoding via libkvazaar [no]

--enable-liblc3 enable LC3 de/encoding via liblc3 [no]

--enable-liblcevc-dec enable LCEVC decoding via liblcevc-dec [no]

--enable-liblensfun enable lensfun lens correction [no]

--enable-libmodplug enable ModPlug via libmodplug [no]

--enable-libmp3lame enable MP3 encoding via libmp3lame [no]

--enable-liboapv enable APV encoding via liboapv [no]

--enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]

--enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]

--enable-libopencv enable video filtering via libopencv [no]

--enable-libopenh264 enable H.264 encoding via OpenH264 [no]

--enable-libopenjpeg enable JPEG 2000 encoding via OpenJPEG [no]

--enable-libopenmpt enable decoding tracked files via libopenmpt [no]

--enable-libopenvino enable OpenVINO as a DNN module backend

for DNN based filters like dnn_processing [no]

--enable-libopus enable Opus de/encoding via libopus [no]

--enable-libplacebo enable libplacebo library [no]

--enable-libpulse enable Pulseaudio input via libpulse [no]

--enable-libqrencode enable QR encode generation via libqrencode [no]

--enable-libquirc enable QR decoding via libquirc [no]

--enable-librabbitmq enable RabbitMQ library [no]

--enable-librav1e enable AV1 encoding via rav1e [no]

--enable-librist enable RIST via librist [no]

--enable-librsvg enable SVG rasterization via librsvg [no]

--enable-librubberband enable rubberband needed for rubberband filter [no]

--enable-librtmp enable RTMP[E] support via librtmp [no]

--enable-libshaderc enable GLSL->SPIRV compilation via libshaderc [no]

--enable-libshine enable fixed-point MP3 encoding via libshine [no]

--enable-libsmbclient enable Samba protocol via libsmbclient [no]

--enable-libsnappy enable Snappy compression, needed for hap encoding [no]

--enable-libsoxr enable Include libsoxr resampling [no]

--enable-libspeex enable Speex de/encoding via libspeex [no]

--enable-libsrt enable Haivision SRT protocol via libsrt [no]

--enable-libssh enable SFTP protocol via libssh [no]

--enable-libsvtav1 enable AV1 encoding via SVT [no]

--enable-libtensorflow enable TensorFlow as a DNN module backend

for DNN based filters like sr [no]

--enable-libtesseract enable Tesseract, needed for ocr filter [no]

--enable-libtheora enable Theora encoding via libtheora [no]

--enable-libtls enable LibreSSL (via libtls), needed for https support

if openssl, gnutls or mbedtls is not used [no]

--enable-libtorch enable Torch as one DNN backend [no]

--enable-libtwolame enable MP2 encoding via libtwolame [no]

--enable-libuavs3d enable AVS3 decoding via libuavs3d [no]

--enable-libv4l2 enable libv4l2/v4l-utils [no]

--enable-libvidstab enable video stabilization using vid.stab [no]

--enable-libvmaf enable vmaf filter via libvmaf [no]

--enable-libvo-amrwbenc enable AMR-WB encoding via libvo-amrwbenc [no]

--enable-libvorbis enable Vorbis en/decoding via libvorbis,

native implementation exists [no]

--enable-libvpx enable VP8 and VP9 de/encoding via libvpx [no]

--enable-libvvenc enable H.266/VVC encoding via vvenc [no]

--enable-libwebp enable WebP encoding via libwebp [no]

--enable-libx264 enable H.264 encoding via x264 [no]

--enable-libx265 enable HEVC encoding via x265 [no]

--enable-libxeve enable EVC encoding via libxeve [no]

--enable-libxevd enable EVC decoding via libxevd [no]

--enable-libxavs enable AVS encoding via xavs [no]

--enable-libxavs2 enable AVS2 encoding via xavs2 [no]

--enable-libxcb enable X11 grabbing using XCB [autodetect]

--enable-libxcb-shm enable X11 grabbing shm communication [autodetect]

--enable-libxcb-xfixes enable X11 grabbing mouse rendering [autodetect]

--enable-libxcb-shape enable X11 grabbing shape rendering [autodetect]

--enable-libxvid enable Xvid encoding via xvidcore,

native MPEG-4/Xvid encoder exists [no]

--enable-libxml2 enable XML parsing using the C library libxml2, needed

for dash and imf demuxing support [no]

--enable-libzimg enable z.lib, needed for zscale filter [no]

--enable-libzmq enable message passing via libzmq [no]

--enable-libzvbi enable teletext support via libzvbi [no]

--enable-lv2 enable LV2 audio filtering [no]

--disable-lzma disable lzma [autodetect]

--enable-decklink enable Blackmagic DeckLink I/O support [no]

--enable-mbedtls enable mbedTLS, needed for https support

if openssl, gnutls or libtls is not used [no]

--enable-mediacodec enable Android MediaCodec support [no]

--enable-mediafoundation enable encoding via MediaFoundation [auto]

--disable-metal disable Apple Metal framework [autodetect]

--enable-libmysofa enable libmysofa, needed for sofalizer filter [no]

--enable-ohcodec enable OpenHarmony Codec support [no]

--enable-openal enable OpenAL 1.1 capture support [no]

--enable-opencl enable OpenCL processing [no]

--enable-opengl enable OpenGL rendering [no]

--enable-openssl enable openssl, needed for https support

if gnutls, libtls or mbedtls is not used [no]

--enable-pocketsphinx enable PocketSphinx, needed for asr filter [no]

--disable-sndio disable sndio support [autodetect]

--disable-schannel disable SChannel SSP, needed for TLS support on

Windows if openssl and gnutls are not used [autodetect]

--disable-sdl2 disable sdl2 [autodetect]

--disable-securetransport disable Secure Transport, needed for TLS support

on OSX if openssl and gnutls are not used [autodetect]

--enable-vapoursynth enable VapourSynth demuxer [no]

--enable-whisper enable whisper filter [no]

--disable-xlib disable xlib [autodetect]

--disable-zlib disable zlib [autodetect]

The following libraries provide various hardware acceleration features:

--disable-amf disable AMF video encoding code [autodetect]

--disable-audiotoolbox disable Apple AudioToolbox code [autodetect]

--enable-cuda-nvcc enable Nvidia CUDA compiler [no]

--disable-cuda-llvm disable CUDA compilation using clang [autodetect]

--disable-cuvid disable Nvidia CUVID support [autodetect]

--disable-d3d11va disable Microsoft Direct3D 11 video acceleration code [autodetect]

--disable-d3d12va disable Microsoft Direct3D 12 video acceleration code [autodetect]

--disable-dxva2 disable Microsoft DirectX 9 video acceleration code [autodetect]

--disable-ffnvcodec disable dynamically linked Nvidia code [autodetect]

--disable-libdrm disable DRM code (Linux) [autodetect]

--enable-libmfx enable Intel MediaSDK (AKA Quick Sync Video) code via libmfx [no]

--enable-libvpl enable Intel oneVPL code via libvpl if libmfx is not used [no]

--enable-libnpp enable Nvidia Performance Primitives-based code [no]

--enable-mmal enable Broadcom Multi-Media Abstraction Layer (Raspberry Pi) via MMAL [no]

--disable-nvdec disable Nvidia video decoding acceleration (via hwaccel) [autodetect]

--disable-nvenc disable Nvidia video encoding code [autodetect]

--enable-omx enable OpenMAX IL code [no]

--enable-omx-rpi enable OpenMAX IL code for Raspberry Pi [no]

--enable-rkmpp enable Rockchip Media Process Platform code [no]

--disable-v4l2-m2m disable V4L2 mem2mem code [autodetect]

--disable-vaapi disable Video Acceleration API (mainly Unix/Intel) code [autodetect]

--disable-vdpau disable Nvidia Video Decode and Presentation API for Unix code [autodetect]

--disable-videotoolbox disable VideoToolbox code [autodetect]

--disable-vulkan disable Vulkan code [autodetect]

--enable-vulkan-static statically link to libvulkan [no]

Toolchain options:

--arch=ARCH select architecture [$arch]

--cpu=CPU select the minimum required CPU (affects

instruction selection, may crash on older CPUs)

--cross-prefix=PREFIX use PREFIX for compilation tools [$cross_prefix]

--progs-suffix=SUFFIX program name suffix []

--enable-cross-compile assume a cross-compiler is used

--sysroot=PATH root of cross-build tree

--sysinclude=PATH location of cross-build system headers

--target-os=OS compiler targets OS [$target_os]

--target-exec=CMD command to run executables on target

--target-path=DIR path to view of build directory on target

--target-samples=DIR path to samples directory on target

--tempprefix=PATH force fixed dir/prefix instead of mktemp for checks

--toolchain=NAME set tool defaults according to NAME

(<tool>[-sanitizer[-...]], e.g. clang-asan-ubsan

tools: gcc, clang, msvc, icl, gcov, llvm-cov,

valgrind-memcheck, valgrind-massif, hardened

sanitizers: asan, fuzz, lsan, msan, tsan, ubsan)

--nm=NM use nm tool NM [$nm_default]

--ar=AR use archive tool AR [$ar_default]

--as=AS use assembler AS [$as_default]

--ln_s=LN_S use symbolic link tool LN_S [$ln_s_default]

--strip=STRIP use strip tool STRIP [$strip_default]

--windres=WINDRES use windows resource compiler WINDRES [$windres_default]

--x86asmexe=EXE use nasm-compatible assembler EXE [$x86asmexe_default]

--cc=CC use C compiler CC [$cc_default]

--stdc=STDC use C standard STDC [$stdc_default]

--cxx=CXX use C compiler CXX [$cxx_default]

--stdcxx=STDCXX use C standard STDCXX [$stdcxx_default]

--objcc=OCC use ObjC compiler OCC [$cc_default]

--dep-cc=DEPCC use dependency generator DEPCC [$cc_default]

--nvcc=NVCC use Nvidia CUDA compiler NVCC or clang [$nvcc_default]

--ld=LD use linker LD [$ld_default]

--metalcc=METALCC use metal compiler METALCC [$metalcc_default]

--metallib=METALLIB use metal linker METALLIB [$metallib_default]

--pkg-config=PKGCONFIG use pkg-config tool PKGCONFIG [$pkg_config_default]

--pkg-config-flags=FLAGS pass additional flags to pkgconf []

--ranlib=RANLIB use ranlib RANLIB [$ranlib_default]

--doxygen=DOXYGEN use DOXYGEN to generate API doc [$doxygen_default]

--host-cc=HOSTCC use host C compiler HOSTCC

--host-cflags=HCFLAGS use HCFLAGS when compiling for host

--host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host

--host-ld=HOSTLD use host linker HOSTLD

--host-ldflags=HLDFLAGS use HLDFLAGS when linking for host

--host-extralibs=HLIBS use libs HLIBS when linking for host

--host-os=OS compiler host OS [$target_os]

--extra-cflags=ECFLAGS add ECFLAGS to CFLAGS [$CFLAGS]

--extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]

--extra-objcflags=FLAGS add FLAGS to OBJCFLAGS [$CFLAGS]

--extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]

--extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]

--extra-ldsoflags=ELDFLAGS add ELDFLAGS to LDSOFLAGS [$LDSOFLAGS]

--extra-libs=ELIBS add ELIBS [$ELIBS]

--extra-version=STRING version string suffix []

--optflags=OPTFLAGS override optimization-related compiler flags

--nvccflags=NVCCFLAGS override nvcc flags [$nvccflags_default]

--build-suffix=SUFFIX library name suffix []

--enable-pic build position-independent code

--enable-thumb compile for Thumb instruction set

--enable-lto[=arg] use link-time optimization

--env="ENV=override" override the environment variables

--disable-response-files Don't pass the list of objects to linker in a file [autodetect]

Advanced options (experts only):

--malloc-prefix=PREFIX prefix malloc and related names with PREFIX

--custom-allocator=NAME use a supported custom allocator

--disable-symver disable symbol versioning

--enable-hardcoded-tables use hardcoded tables instead of runtime generation

--disable-safe-bitstream-reader

disable buffer boundary checking in bitreaders

(This disables some security checks and can cause undefined behavior,

crashes and arbitrary code execution, it may be faster, but

should only be used with trusted input)

--sws-max-filter-size=N the max filter size swscale uses [$sws_max_filter_size_default]

Optimization options (experts only):

--disable-asm disable all assembly optimizations

--disable-altivec disable AltiVec optimizations

--disable-vsx disable VSX optimizations

--disable-power8 disable POWER8 optimizations

--disable-amd3dnow disable 3DNow! optimizations

--disable-amd3dnowext disable 3DNow! extended optimizations

--disable-mmx disable MMX optimizations

--disable-mmxext disable MMXEXT optimizations

--disable-sse disable SSE optimizations

--disable-sse2 disable SSE2 optimizations

--disable-sse3 disable SSE3 optimizations

--disable-ssse3 disable SSSE3 optimizations

--disable-sse4 disable SSE4 optimizations

--disable-sse42 disable SSE4.2 optimizations

--disable-avx disable AVX optimizations

--disable-xop disable XOP optimizations

--disable-fma3 disable FMA3 optimizations

--disable-fma4 disable FMA4 optimizations

--disable-avx2 disable AVX2 optimizations

--disable-avx512 disable AVX-512 optimizations

--disable-avx512icl disable AVX-512ICL optimizations

--disable-aesni disable AESNI optimizations

--disable-armv5te disable armv5te optimizations

--disable-armv6 disable armv6 optimizations

--disable-armv6t2 disable armv6t2 optimizations

--disable-vfp disable VFP optimizations

--disable-neon disable NEON optimizations

--disable-dotprod disable DOTPROD optimizations

--disable-i8mm disable I8MM optimizations

--disable-sve disable SVE optimizations

--disable-sve2 disable SVE2 optimizations

--disable-inline-asm disable use of inline assembly

--disable-x86asm disable use of standalone x86 assembly

--disable-mipsdsp disable MIPS DSP ASE R1 optimizations

--disable-mipsdspr2 disable MIPS DSP ASE R2 optimizations

--disable-msa disable MSA optimizations

--disable-mipsfpu disable floating point MIPS optimizations

--disable-mmi disable Loongson MMI optimizations

--disable-lsx disable Loongson LSX optimizations

--disable-lasx disable Loongson LASX optimizations

--disable-rvv disable RISC-V Vector optimizations

--disable-fast-unaligned consider unaligned accesses slow

--disable-simd128 disable WebAssembly simd128 optimizations

Developer options (useful when working on FFmpeg itself):

--disable-debug disable debugging symbols

--enable-debug=LEVEL set the debug level [$debuglevel]

--disable-optimizations disable compiler optimizations

--enable-extra-warnings enable more compiler warnings

--disable-stripping disable stripping of executables and shared libraries

--assert-level=level 0(default), 1 or 2, amount of assertion testing,

2 causes a slowdown at runtime.

--enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data

--valgrind=VALGRIND run "make fate" tests through valgrind to detect memory

leaks and errors, using the specified valgrind binary.

Cannot be combined with --target-exec

--enable-ftrapv Trap arithmetic overflows

--samples=PATH location of test samples for FATE, if not set use

\$FATE_SAMPLES at make invocation time.

--enable-neon-clobber-test check NEON registers for clobbering (should be

used only for debugging purposes)

--enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;

should be used only for debugging purposes)

--enable-random randomly enable/disable components

--disable-random

--enable-random=LIST randomly enable/disable specific components or

--disable-random=LIST component groups. LIST is a comma-separated list

of NAME[:PROB] entries where NAME is a component

(group) and PROB the probability associated with

NAME (default 0.5).

--random-seed=VALUE seed value for --enable/disable-random

--disable-valgrind-backtrace do not print a backtrace under Valgrind

(only applies to --disable-optimizations builds)

--enable-ossfuzz Enable building fuzzer tool

--libfuzzer=PATH path to libfuzzer

--ignore-tests=TESTS comma-separated list (without "fate-" prefix

in the name) of tests whose result is ignored

--enable-linux-perf enable Linux Performance Monitor API

--enable-macos-kperf enable macOS kperf (private) API

--disable-large-tests disable tests that use a large amount of memory

--disable-ptx-compression don't compress CUDA PTX code even when possible

--disable-resource-compression don't compress resources even when possible

--disable-version-tracking don't include the git/release version in the build

NOTE: Object files are built at the place where configure is launched.

EOF

exit 0

}

if test -t 1 && which tput >/dev/null 2>&1; then

ncolors=$(tput colors)

if test -n "$ncolors" && test $ncolors -ge 8; then

bold_color=$(tput bold)

warn_color=$(tput setaf 3)

error_color=$(tput setaf 1)

reset_color=$(tput sgr0)

fi

# 72 used instead of 80 since that's the default of pr

ncols=$(tput cols)

fi

: ${ncols:=72}

log(){

echo "$@" >> $logfile

}

log_file(){

log BEGIN "$1"

log_file_i=1

while IFS= read -r log_file_line; do

printf '%5d\t%s\n' "$log_file_i" "$log_file_line"

log_file_i=$(($log_file_i+1))

done < "$1" >> "$logfile"

log END "$1"

}

warn(){

log "WARNING: $*"

WARNINGS="${WARNINGS}WARNING: $*\n"

}

die(){

log "$@"

echo "$error_color$bold_color$@$reset_color"

cat <<EOF

If you think configure made a mistake, make sure you are using the latest

version from Git. If the latest version fails, report the problem to the

[email protected] mailing list or IRC #ffmpeg on irc.libera.chat.

EOF

if disabled logging; then

cat <<EOF

Rerun configure with logging enabled (do not use --disable-logging), and

include the log this produces with your report.

EOF

else

cat <<EOF

Include the log file "$logfile" produced by configure as this will help

solve the problem.

EOF

fi

exit 1

}

# Avoid locale weirdness, besides we really just want to translate ASCII.

toupper(){

echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ

}

tolower(){

echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz

}

c_escape(){

echo "$*" | sed 's/["\\]/\\\0/g'

}

sh_quote(){

v=$(echo "$1" | sed "s/'/'\\\\''/g")

test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"

echo "$v"

}

cleanws(){

echo "$@" | sed 's/^ *//;s/[[:space:]][[:space:]]*/ /g;s/ *$//'

}

filter(){

pat=$1

shift

for v; do

eval "case '$v' in $pat) printf '%s ' '$v' ;; esac"

done

}

filter_out(){

pat=$1

shift

for v; do

eval "case '$v' in $pat) ;; *) printf '%s ' '$v' ;; esac"

done

}

map(){

m=$1

shift

for v; do eval $m; done

}

add_suffix(){

suffix=$1

shift

for v; do echo ${v}${suffix}; done

}

remove_suffix(){

suffix=$1

shift

for v; do echo ${v%$suffix}; done

}

set_all(){

value=$1

shift

for var in $*; do

eval $var=$value

done

}

set_weak(){

value=$1

shift

for var; do

eval : \${$var:=$value}

done

}

sanitize_var_name(){

echo $@ | sed 's/[^A-Za-z0-9_]/_/g'

}

set_sanitized(){

var=$1

shift

eval $(sanitize_var_name "$var")='$*'

}

get_sanitized(){

eval echo \$$(sanitize_var_name "$1")

}

pushvar(){

for pvar in $*; do

eval level=\${${pvar}_level:=0}

eval ${pvar}_${level}="\$$pvar"

eval ${pvar}_level=$(($level+1))

done

}

popvar(){

for pvar in $*; do

eval level=\${${pvar}_level:-0}

test $level = 0 && continue

eval level=$(($level-1))

eval $pvar="\${${pvar}_${level}}"

eval ${pvar}_level=$level

eval unset ${pvar}_${level}

done

}

request(){

for var in $*; do

eval ${var}_requested=yes

eval $var=

done

}

warn_if_gets_disabled(){

for var in $*; do

WARN_IF_GETS_DISABLED_LIST="$WARN_IF_GETS_DISABLED_LIST $var"

done

}

enable(){

set_all yes $*

}

disable(){

set_all no $*

}

disable_with_reason(){

disable $1

eval "${1}_disable_reason=\"$2\""

if requested $1; then

die "ERROR: $1 requested, but $2"

fi

}

enable_weak(){

set_weak yes $*

}

disable_weak(){

set_weak no $*

}

enable_sanitized(){

for var; do

enable $(sanitize_var_name $var)

done

}

disable_sanitized(){

for var; do

disable $(sanitize_var_name $var)

done

}

do_enable_deep(){

for var; do

enabled $var && continue

set -- $var

eval enable_deep \$${var}_select

var=$1

eval enable_deep_weak \$${var}_suggest

done

}

enable_deep(){

do_enable_deep $*

enable $*

}

enable_deep_weak(){

for var; do

disabled $var && continue

set -- $var

do_enable_deep $var

var=$1

enable_weak $var

done

}

requested(){

test "${1#!}" = "$1" && op="=" || op="!="

eval test "x\$${1#!}_requested" $op "xyes"

}

enabled(){

test "${1#!}" = "$1" && op="=" || op="!="

eval test "x\$${1#!}" $op "xyes"

}

disabled(){

test "${1#!}" = "$1" && op="=" || op="!="

eval test "x\$${1#!}" $op "xno"

}

enabled_all(){

for opt; do

enabled $opt || return 1

done

}

disabled_all(){

for opt; do

disabled $opt || return 1

done

}

enabled_any(){

for opt; do

enabled $opt && return 0

done

}

disabled_any(){

for opt; do

disabled $opt && return 0

done

return 1

}

set_default(){

for opt; do

eval : \${$opt:=\$${opt}_default}

done

}

is_in(){

value=$1

shift

for var in $*; do

[ $var = $value ] && return 0

done

return 1

}

# The cfg loop is very hot (several thousands iterations), and in bash also

# potentially quite slow. Try to abort the iterations early, preferably without

# calling functions. 70%+ of the time cfg is already done or without deps.

check_deps(){

for cfg; do

eval [ x\$${cfg}_checking = xdone ] && continue

eval [ x\$${cfg}_checking = xinprogress ] && die "Circular dependency for $cfg."

eval "

dep_all=\$${cfg}_deps

dep_any=\$${cfg}_deps_any

dep_con=\$${cfg}_conflict

dep_sel=\$${cfg}_select

dep_sgs=\$${cfg}_suggest

dep_ifa=\$${cfg}_if

dep_ifn=\$${cfg}_if_any

"

# most of the time here $cfg has no deps - avoid costly no-op work

if [ "$dep_all$dep_any$dep_con$dep_sel$dep_sgs$dep_ifa$dep_ifn" ]; then

eval ${cfg}_checking=inprogress

set -- $cfg "$dep_all" "$dep_any" "$dep_con" "$dep_sel" "$dep_sgs" "$dep_ifa" "$dep_ifn"

check_deps $dep_all $dep_any $dep_con $dep_sel $dep_sgs $dep_ifa $dep_ifn

cfg=$1; dep_all=$2; dep_any=$3; dep_con=$4; dep_sel=$5 dep_sgs=$6; dep_ifa=$7; dep_ifn=$8

[ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }

[ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }

enabled_all $dep_all || { disable_with_reason $cfg "not all dependencies are satisfied: $dep_all"; }

enabled_any $dep_any || { disable_with_reason $cfg "not any dependency is satisfied: $dep_any"; }

disabled_all $dep_con || { disable_with_reason $cfg "some conflicting dependencies are unsatisfied: $dep_con"; }

disabled_any $dep_sel && { disable_with_reason $cfg "some selected dependency is unsatisfied: $dep_sel"; }

enabled $cfg && enable_deep_weak $dep_sel $dep_sgs

for dep in $dep_all $dep_any $dep_sel $dep_sgs; do

# filter out library deps, these do not belong in extralibs

is_in $dep $LIBRARY_LIST && continue

enabled $dep && eval append ${cfg}_extralibs ${dep}_extralibs

done

fi

eval ${cfg}_checking=done

done

}

print_config(){

pfx=$1

files=$2

shift 2

map 'eval echo "$v \${$v:-no}"' "$@" |

awk "BEGIN { split(\"$files\", files) }

{

c = \"$pfx\" toupper(\$1);

v = \$2;

sub(/yes/, 1, v);

sub(/no/, 0, v);

for (f in files) {

file = files[f];

if (file ~ /\\.h\$/) {

printf(\"#define %s %d\\n\", c, v) >>file;

} else if (file ~ /\\.asm\$/) {

printf(\"%%define %s %d\\n\", c, v) >>file;

} else if (file ~ /\\.mak\$/) {

n = -v ? \"\" : \"!\";

printf(\"%s%s=yes\\n\", n, c) >>file;

} else if (file ~ /\\.texi\$/) {

pre = -v ? \"\" : \"@c \";

yesno = \$2;

c2 = tolower(c);

gsub(/_/, \"-\", c2);

printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;

}

}

}"

}

print_enabled(){

suf=$1

shift

for v; do

enabled $v && printf "%s\n" ${v%$suf}

done

}

append(){

var=$1

shift

eval "$var=\"\$$var $*\""

}

prepend(){

var=$1

shift

eval "$var=\"$* \$$var\""

}

reverse () {

eval '

reverse_out=

for v in $'$1'; do

reverse_out="$v $reverse_out"

done

'$1'=$reverse_out

'

}

# keeps the last occurrence of each non-unique item

unique(){

unique_out=

eval unique_in=\$$1

reverse unique_in

for v in $unique_in; do

# " $unique_out" +space such that every item is surrounded with spaces

case " $unique_out" in *" $v "*) continue; esac # already in list

unique_out="$unique_out$v "

done

reverse unique_out

eval $1=\$unique_out

}

resolve(){

resolve_out=

eval resolve_in=\$$1

for v in $resolve_in; do

eval 'resolve_out="$resolve_out$'$v' "'

done

eval $1=\$resolve_out

}

add_cppflags(){

append CPPFLAGS "$@"

}

add_cflags(){

append CFLAGS $($cflags_filter "$@")

}

add_cflags_headers(){

append CFLAGS_HEADERS $($cflags_filter "$@")

}

add_cxxflags(){

append CXXFLAGS $($cflags_filter "$@")

}

add_objcflags(){

append OBJCFLAGS $($objcflags_filter "$@")

}

add_asflags(){

append ASFLAGS $($asflags_filter "$@")

}

add_ldflags(){

append LDFLAGS $($ldflags_filter "$@")

}

add_ldexeflags(){

append LDEXEFLAGS $($ldflags_filter "$@")

}

add_ldsoflags(){

append LDSOFLAGS $($ldflags_filter "$@")

}

add_extralibs(){

prepend extralibs $($ldflags_filter "$@")

}

add_stripflags(){

append ASMSTRIPFLAGS "$@"

}

add_host_cppflags(){