a05c5cf960a79461ab7ef80aa279b65e3d935336
[ffmpeg.git] / configure
1 #!/bin/sh
2 #
3 # FFmpeg configure script
4 #
5 # Copyright (c) 2000-2002 Fabrice Bellard
6 # Copyright (c) 2005-2008 Diego Biurrun
7 # Copyright (c) 2005-2008 Mans Rullgard
8 #
9
10 # Prevent locale nonsense from breaking basic text processing.
11 LC_ALL=C
12 export LC_ALL
13
14 # make sure we are running under a compatible shell
15 # try to make this part work with most shells
16
17 try_exec(){
18     echo "Trying shell $1"
19     type "$1" > /dev/null 2>&1 && exec "$@"
20 }
21
22 unset foo
23 (: ${foo%%bar}) 2> /dev/null
24 E1="$?"
25
26 (: ${foo?}) 2> /dev/null
27 E2="$?"
28
29 if test "$E1" != 0 || test "$E2" = 0; then
30     echo "Broken shell detected.  Trying alternatives."
31     export FF_CONF_EXEC
32     if test "0$FF_CONF_EXEC" -lt 1; then
33         FF_CONF_EXEC=1
34         try_exec bash "$0" "$@"
35     fi
36     if test "0$FF_CONF_EXEC" -lt 2; then
37         FF_CONF_EXEC=2
38         try_exec ksh "$0" "$@"
39     fi
40     if test "0$FF_CONF_EXEC" -lt 3; then
41         FF_CONF_EXEC=3
42         try_exec /usr/xpg4/bin/sh "$0" "$@"
43     fi
44     echo "No compatible shell script interpreter found."
45     echo "This configure script requires a POSIX-compatible shell"
46     echo "such as bash or ksh."
47     echo "THIS IS NOT A BUG IN FFMPEG, DO NOT REPORT IT AS SUCH."
48     echo "Instead, install a working POSIX-compatible shell."
49     echo "Disabling this configure test will create a broken FFmpeg."
50     if test "$BASH_VERSION" = '2.04.0(1)-release'; then
51         echo "This bash version ($BASH_VERSION) is broken on your platform."
52         echo "Upgrade to a later version if available."
53     fi
54     exit 1
55 fi
56
57 test -d /usr/xpg4/bin && PATH=/usr/xpg4/bin:$PATH
58
59 show_help(){
60     cat <<EOF
61 Usage: configure [options]
62 Options: [defaults in brackets after descriptions]
63
64 Help options:
65   --help                   print this message
66   --quiet                  Suppress showing informative output
67   --list-decoders          show all available decoders
68   --list-encoders          show all available encoders
69   --list-hwaccels          show all available hardware accelerators
70   --list-demuxers          show all available demuxers
71   --list-muxers            show all available muxers
72   --list-parsers           show all available parsers
73   --list-protocols         show all available protocols
74   --list-bsfs              show all available bitstream filters
75   --list-indevs            show all available input devices
76   --list-outdevs           show all available output devices
77   --list-filters           show all available filters
78
79 Standard options:
80   --logfile=FILE           log tests and output to FILE [ffbuild/config.log]
81   --disable-logging        do not log configure debug information
82   --fatal-warnings         fail if any configure warning is generated
83   --prefix=PREFIX          install in PREFIX [$prefix_default]
84   --bindir=DIR             install binaries in DIR [PREFIX/bin]
85   --datadir=DIR            install data files in DIR [PREFIX/share/ffmpeg]
86   --docdir=DIR             install documentation in DIR [PREFIX/share/doc/ffmpeg]
87   --libdir=DIR             install libs in DIR [PREFIX/lib]
88   --shlibdir=DIR           install shared libs in DIR [LIBDIR]
89   --incdir=DIR             install includes in DIR [PREFIX/include]
90   --mandir=DIR             install man page in DIR [PREFIX/share/man]
91   --pkgconfigdir=DIR       install pkg-config files in DIR [LIBDIR/pkgconfig]
92   --enable-rpath           use rpath to allow installing libraries in paths
93                            not part of the dynamic linker search path
94                            use rpath when linking programs (USE WITH CARE)
95   --install-name-dir=DIR   Darwin directory name for installed targets
96
97 Licensing options:
98   --enable-gpl             allow use of GPL code, the resulting libs
99                            and binaries will be under GPL [no]
100   --enable-version3        upgrade (L)GPL to version 3 [no]
101   --enable-nonfree         allow use of nonfree code, the resulting libs
102                            and binaries will be unredistributable [no]
103
104 Configuration options:
105   --disable-static         do not build static libraries [no]
106   --enable-shared          build shared libraries [no]
107   --enable-small           optimize for size instead of speed
108   --disable-runtime-cpudetect disable detecting CPU capabilities at runtime (smaller binary)
109   --enable-gray            enable full grayscale support (slower color)
110   --disable-swscale-alpha  disable alpha channel support in swscale
111   --disable-all            disable building components, libraries and programs
112   --disable-autodetect     disable automatically detected external libraries [no]
113
114 Program options:
115   --disable-programs       do not build command line programs
116   --disable-ffmpeg         disable ffmpeg build
117   --disable-ffplay         disable ffplay build
118   --disable-ffprobe        disable ffprobe build
119   --disable-ffserver       disable ffserver build
120
121 Documentation options:
122   --disable-doc            do not build documentation
123   --disable-htmlpages      do not build HTML documentation pages
124   --disable-manpages       do not build man documentation pages
125   --disable-podpages       do not build POD documentation pages
126   --disable-txtpages       do not build text documentation pages
127
128 Component options:
129   --disable-avdevice       disable libavdevice build
130   --disable-avcodec        disable libavcodec build
131   --disable-avformat       disable libavformat build
132   --disable-swresample     disable libswresample build
133   --disable-swscale        disable libswscale build
134   --disable-postproc       disable libpostproc build
135   --disable-avfilter       disable libavfilter build
136   --enable-avresample      enable libavresample build [no]
137   --disable-pthreads       disable pthreads [autodetect]
138   --disable-w32threads     disable Win32 threads [autodetect]
139   --disable-os2threads     disable OS/2 threads [autodetect]
140   --disable-network        disable network support [no]
141   --disable-dct            disable DCT code
142   --disable-dwt            disable DWT code
143   --disable-error-resilience disable error resilience code
144   --disable-lsp            disable LSP code
145   --disable-lzo            disable LZO decoder code
146   --disable-mdct           disable MDCT code
147   --disable-rdft           disable RDFT code
148   --disable-fft            disable FFT code
149   --disable-faan           disable floating point AAN (I)DCT code
150   --disable-pixelutils     disable pixel utils in libavutil
151
152 Individual component options:
153   --disable-everything     disable all components listed below
154   --disable-encoder=NAME   disable encoder NAME
155   --enable-encoder=NAME    enable encoder NAME
156   --disable-encoders       disable all encoders
157   --disable-decoder=NAME   disable decoder NAME
158   --enable-decoder=NAME    enable decoder NAME
159   --disable-decoders       disable all decoders
160   --disable-hwaccel=NAME   disable hwaccel NAME
161   --enable-hwaccel=NAME    enable hwaccel NAME
162   --disable-hwaccels       disable all hwaccels
163   --disable-muxer=NAME     disable muxer NAME
164   --enable-muxer=NAME      enable muxer NAME
165   --disable-muxers         disable all muxers
166   --disable-demuxer=NAME   disable demuxer NAME
167   --enable-demuxer=NAME    enable demuxer NAME
168   --disable-demuxers       disable all demuxers
169   --enable-parser=NAME     enable parser NAME
170   --disable-parser=NAME    disable parser NAME
171   --disable-parsers        disable all parsers
172   --enable-bsf=NAME        enable bitstream filter NAME
173   --disable-bsf=NAME       disable bitstream filter NAME
174   --disable-bsfs           disable all bitstream filters
175   --enable-protocol=NAME   enable protocol NAME
176   --disable-protocol=NAME  disable protocol NAME
177   --disable-protocols      disable all protocols
178   --enable-indev=NAME      enable input device NAME
179   --disable-indev=NAME     disable input device NAME
180   --disable-indevs         disable input devices
181   --enable-outdev=NAME     enable output device NAME
182   --disable-outdev=NAME    disable output device NAME
183   --disable-outdevs        disable output devices
184   --disable-devices        disable all devices
185   --enable-filter=NAME     enable filter NAME
186   --disable-filter=NAME    disable filter NAME
187   --disable-filters        disable all filters
188   --disable-v4l2_m2m       disable V4L2 mem2mem code [autodetect]
189
190 External library support:
191
192   Using any of the following switches will allow FFmpeg to link to the
193   corresponding external library. All the components depending on that library
194   will become enabled, if all their other dependencies are met and they are not
195   explicitly disabled. E.g. --enable-libwavpack will enable linking to
196   libwavpack and allow the libwavpack encoder to be built, unless it is
197   specifically disabled with --disable-encoder=libwavpack.
198
199   Note that only the system libraries are auto-detected. All the other external
200   libraries must be explicitly enabled.
201
202   Also note that the following help text describes the purpose of the libraries
203   themselves, not all their features will necessarily be usable by FFmpeg.
204
205   --disable-alsa           disable ALSA support [autodetect]
206   --disable-appkit         disable Apple AppKit framework [autodetect]
207   --disable-avfoundation   disable Apple AVFoundation framework [autodetect]
208   --enable-avisynth        enable reading of AviSynth script files [no]
209   --disable-bzlib          disable bzlib [autodetect]
210   --disable-coreimage      disable Apple CoreImage framework [autodetect]
211   --enable-chromaprint     enable audio fingerprinting with chromaprint [no]
212   --enable-frei0r          enable frei0r video filtering [no]
213   --enable-gcrypt          enable gcrypt, needed for rtmp(t)e support
214                            if openssl, librtmp or gmp is not used [no]
215   --enable-gmp             enable gmp, needed for rtmp(t)e support
216                            if openssl or librtmp is not used [no]
217   --enable-gnutls          enable gnutls, needed for https support
218                            if openssl is not used [no]
219   --disable-iconv          disable iconv [autodetect]
220   --enable-jni             enable JNI support [no]
221   --enable-ladspa          enable LADSPA audio filtering [no]
222   --enable-libass          enable libass subtitles rendering,
223                            needed for subtitles and ass filter [no]
224   --enable-libbluray       enable BluRay reading using libbluray [no]
225   --enable-libbs2b         enable bs2b DSP library [no]
226   --enable-libcaca         enable textual display using libcaca [no]
227   --enable-libcelt         enable CELT decoding via libcelt [no]
228   --enable-libcdio         enable audio CD grabbing with libcdio [no]
229   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
230                            and libraw1394 [no]
231   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
232   --enable-libflite        enable flite (voice synthesis) support via libflite [no]
233   --enable-libfontconfig   enable libfontconfig, useful for drawtext filter [no]
234   --enable-libfreetype     enable libfreetype, needed for drawtext filter [no]
235   --enable-libfribidi      enable libfribidi, improves drawtext filter [no]
236   --enable-libgme          enable Game Music Emu via libgme [no]
237   --enable-libgsm          enable GSM de/encoding via libgsm [no]
238   --enable-libiec61883     enable iec61883 via libiec61883 [no]
239   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
240   --enable-libjack         enable JACK audio sound server [no]
241   --enable-libkvazaar      enable HEVC encoding via libkvazaar [no]
242   --enable-libmodplug      enable ModPlug via libmodplug [no]
243   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
244   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
245   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
246   --enable-libopencv       enable video filtering via libopencv [no]
247   --enable-libopenh264     enable H.264 encoding via OpenH264 [no]
248   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
249   --enable-libopenmpt      enable decoding tracked files via libopenmpt [no]
250   --enable-libopus         enable Opus de/encoding via libopus [no]
251   --enable-libpulse        enable Pulseaudio input via libpulse [no]
252   --enable-librsvg         enable SVG rasterization via librsvg [no]
253   --enable-librubberband   enable rubberband needed for rubberband filter [no]
254   --enable-librtmp         enable RTMP[E] support via librtmp [no]
255   --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
256   --enable-libsmbclient    enable Samba protocol via libsmbclient [no]
257   --enable-libsnappy       enable Snappy compression, needed for hap encoding [no]
258   --enable-libsoxr         enable Include libsoxr resampling [no]
259   --enable-libspeex        enable Speex de/encoding via libspeex [no]
260   --enable-libssh          enable SFTP protocol via libssh [no]
261   --enable-libtesseract    enable Tesseract, needed for ocr filter [no]
262   --enable-libtheora       enable Theora encoding via libtheora [no]
263   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
264   --enable-libv4l2         enable libv4l2/v4l-utils [no]
265   --enable-libvidstab      enable video stabilization using vid.stab [no]
266   --enable-libvmaf         enable vmaf filter via libvmaf [no]
267   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
268   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
269                            native implementation exists [no]
270   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
271   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
272   --enable-libwebp         enable WebP encoding via libwebp [no]
273   --enable-libx264         enable H.264 encoding via x264 [no]
274   --enable-libx265         enable HEVC encoding via x265 [no]
275   --enable-libxavs         enable AVS encoding via xavs [no]
276   --enable-libxcb          enable X11 grabbing using XCB [autodetect]
277   --enable-libxcb-shm      enable X11 grabbing shm communication [autodetect]
278   --enable-libxcb-xfixes   enable X11 grabbing mouse rendering [autodetect]
279   --enable-libxcb-shape    enable X11 grabbing shape rendering [autodetect]
280   --enable-libxvid         enable Xvid encoding via xvidcore,
281                            native MPEG-4/Xvid encoder exists [no]
282   --enable-libxml2         enable XML parsing using the C library libxml2 [no]
283   --enable-libzimg         enable z.lib, needed for zscale filter [no]
284   --enable-libzmq          enable message passing via libzmq [no]
285   --enable-libzvbi         enable teletext support via libzvbi [no]
286   --disable-lzma           disable lzma [autodetect]
287   --enable-decklink        enable Blackmagic DeckLink I/O support [no]
288   --enable-libndi_newtek   enable Newteck NDI I/O support [no]
289   --enable-mediacodec      enable Android MediaCodec support [no]
290   --enable-libmysofa       enable libmysofa, needed for sofalizer filter [no]
291   --enable-openal          enable OpenAL 1.1 capture support [no]
292   --enable-opencl          enable OpenCL processing [no]
293   --enable-opengl          enable OpenGL rendering [no]
294   --enable-openssl         enable openssl, needed for https support
295                            if gnutls is not used [no]
296   --disable-sndio          disable sndio support [autodetect]
297   --disable-schannel       disable SChannel SSP, needed for TLS support on
298                            Windows if openssl and gnutls are not used [autodetect]
299   --disable-sdl2           disable sdl2 [autodetect]
300   --disable-securetransport disable Secure Transport, needed for TLS support
301                            on OSX if openssl and gnutls are not used [autodetect]
302   --disable-xlib           disable xlib [autodetect]
303   --disable-zlib           disable zlib [autodetect]
304
305   The following libraries provide various hardware acceleration features:
306   --disable-audiotoolbox   disable Apple AudioToolbox code [autodetect]
307   --disable-cuda           disable dynamically linked Nvidia CUDA code [autodetect]
308   --enable-cuda-sdk        enable CUDA features that require the CUDA SDK [no]
309   --disable-cuvid          disable Nvidia CUVID support [autodetect]
310   --disable-d3d11va        disable Microsoft Direct3D 11 video acceleration code [autodetect]
311   --disable-dxva2          disable Microsoft DirectX 9 video acceleration code [autodetect]
312   --enable-libdrm          enable DRM code (Linux) [no]
313   --enable-libmfx          enable Intel MediaSDK (AKA Quick Sync Video) code via libmfx [no]
314   --enable-libnpp          enable Nvidia Performance Primitives-based code [no]
315   --enable-mmal            enable Broadcom Multi-Media Abstraction Layer (Raspberry Pi) via MMAL [no]
316   --disable-nvdec          disable Nvidia video decoding acceleration (via hwaccel) [autodetect]
317   --disable-nvenc          disable Nvidia video encoding code [autodetect]
318   --enable-omx             enable OpenMAX IL code [no]
319   --enable-omx-rpi         enable OpenMAX IL code for Raspberry Pi [no]
320   --enable-rkmpp           enable Rockchip Media Process Platform code [no]
321   --disable-vaapi          disable Video Acceleration API (mainly Unix/Intel) code [autodetect]
322   --disable-vdpau          disable Nvidia Video Decode and Presentation API for Unix code [autodetect]
323   --disable-videotoolbox   disable VideoToolbox code [autodetect]
324
325 Toolchain options:
326   --arch=ARCH              select architecture [$arch]
327   --cpu=CPU                select the minimum required CPU (affects
328                            instruction selection, may crash on older CPUs)
329   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
330   --progs-suffix=SUFFIX    program name suffix []
331   --enable-cross-compile   assume a cross-compiler is used
332   --sysroot=PATH           root of cross-build tree
333   --sysinclude=PATH        location of cross-build system headers
334   --target-os=OS           compiler targets OS [$target_os]
335   --target-exec=CMD        command to run executables on target
336   --target-path=DIR        path to view of build directory on target
337   --target-samples=DIR     path to samples directory on target
338   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
339   --toolchain=NAME         set tool defaults according to NAME
340   --nm=NM                  use nm tool NM [$nm_default]
341   --ar=AR                  use archive tool AR [$ar_default]
342   --as=AS                  use assembler AS [$as_default]
343   --ln_s=LN_S              use symbolic link tool LN_S [$ln_s_default]
344   --strip=STRIP            use strip tool STRIP [$strip_default]
345   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
346   --x86asmexe=EXE          use nasm-compatible assembler EXE [$x86asmexe_default]
347   --cc=CC                  use C compiler CC [$cc_default]
348   --cxx=CXX                use C compiler CXX [$cxx_default]
349   --objcc=OCC              use ObjC compiler OCC [$cc_default]
350   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
351   --nvcc=NVCC              use Nvidia CUDA compiler NVCC [$nvcc_default]
352   --ld=LD                  use linker LD [$ld_default]
353   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
354   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
355   --ranlib=RANLIB          use ranlib RANLIB [$ranlib_default]
356   --doxygen=DOXYGEN        use DOXYGEN to generate API doc [$doxygen_default]
357   --host-cc=HOSTCC         use host C compiler HOSTCC
358   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
359   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
360   --host-ld=HOSTLD         use host linker HOSTLD
361   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
362   --host-libs=HLIBS        use libs HLIBS when linking for host
363   --host-os=OS             compiler host OS [$target_os]
364   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
365   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
366   --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
367   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
368   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
369   --extra-ldsoflags=ELDFLAGS add ELDFLAGS to LDSOFLAGS [$LDSOFLAGS]
370   --extra-libs=ELIBS       add ELIBS [$ELIBS]
371   --extra-version=STRING   version string suffix []
372   --optflags=OPTFLAGS      override optimization-related compiler flags
373   --nvccflags=NVCCFLAGS    override nvcc flags [$nvccflags_default]
374   --build-suffix=SUFFIX    library name suffix []
375   --enable-pic             build position-independent code
376   --enable-thumb           compile for Thumb instruction set
377   --enable-lto             use link-time optimization
378   --env="ENV=override"     override the environment variables
379
380 Advanced options (experts only):
381   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
382   --custom-allocator=NAME  use a supported custom allocator
383   --disable-symver         disable symbol versioning
384   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
385   --disable-safe-bitstream-reader
386                            disable buffer boundary checking in bitreaders
387                            (faster, but may crash)
388   --sws-max-filter-size=N  the max filter size swscale uses [$sws_max_filter_size_default]
389
390 Optimization options (experts only):
391   --disable-asm            disable all assembly optimizations
392   --disable-altivec        disable AltiVec optimizations
393   --disable-vsx            disable VSX optimizations
394   --disable-power8         disable POWER8 optimizations
395   --disable-amd3dnow       disable 3DNow! optimizations
396   --disable-amd3dnowext    disable 3DNow! extended optimizations
397   --disable-mmx            disable MMX optimizations
398   --disable-mmxext         disable MMXEXT optimizations
399   --disable-sse            disable SSE optimizations
400   --disable-sse2           disable SSE2 optimizations
401   --disable-sse3           disable SSE3 optimizations
402   --disable-ssse3          disable SSSE3 optimizations
403   --disable-sse4           disable SSE4 optimizations
404   --disable-sse42          disable SSE4.2 optimizations
405   --disable-avx            disable AVX optimizations
406   --disable-xop            disable XOP optimizations
407   --disable-fma3           disable FMA3 optimizations
408   --disable-fma4           disable FMA4 optimizations
409   --disable-avx2           disable AVX2 optimizations
410   --disable-aesni          disable AESNI optimizations
411   --disable-armv5te        disable armv5te optimizations
412   --disable-armv6          disable armv6 optimizations
413   --disable-armv6t2        disable armv6t2 optimizations
414   --disable-vfp            disable VFP optimizations
415   --disable-neon           disable NEON optimizations
416   --disable-inline-asm     disable use of inline assembly
417   --disable-x86asm         disable use of standalone x86 assembly
418   --disable-mipsdsp        disable MIPS DSP ASE R1 optimizations
419   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
420   --disable-msa            disable MSA optimizations
421   --disable-mipsfpu        disable floating point MIPS optimizations
422   --disable-mmi            disable Loongson SIMD optimizations
423   --disable-fast-unaligned consider unaligned accesses slow
424
425 Developer options (useful when working on FFmpeg itself):
426   --disable-debug          disable debugging symbols
427   --enable-debug=LEVEL     set the debug level [$debuglevel]
428   --disable-optimizations  disable compiler optimizations
429   --enable-extra-warnings  enable more compiler warnings
430   --disable-stripping      disable stripping of executables and shared libraries
431   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
432                            2 causes a slowdown at runtime.
433   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
434   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
435                            leaks and errors, using the specified valgrind binary.
436                            Cannot be combined with --target-exec
437   --enable-ftrapv          Trap arithmetic overflows
438   --samples=PATH           location of test samples for FATE, if not set use
439                            \$FATE_SAMPLES at make invocation time.
440   --enable-neon-clobber-test check NEON registers for clobbering (should be
441                            used only for debugging purposes)
442   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
443                            should be used only for debugging purposes)
444   --enable-random          randomly enable/disable components
445   --disable-random
446   --enable-random=LIST     randomly enable/disable specific components or
447   --disable-random=LIST    component groups. LIST is a comma-separated list
448                            of NAME[:PROB] entries where NAME is a component
449                            (group) and PROB the probability associated with
450                            NAME (default 0.5).
451   --random-seed=VALUE      seed value for --enable/disable-random
452   --disable-valgrind-backtrace do not print a backtrace under Valgrind
453                            (only applies to --disable-optimizations builds)
454   --enable-osfuzz          Enable building fuzzer tool
455   --libfuzzer=PATH         path to libfuzzer
456   --ignore-tests=TESTS     comma-separated list (without "fate-" prefix
457                            in the name) of tests whose result is ignored
458   --enable-linux-perf      enable Linux Performance Monitor API
459
460 NOTE: Object files are built at the place where configure is launched.
461 EOF
462   exit 0
463 }
464
465 if test -t 1 && which tput >/dev/null 2>&1; then
466     ncolors=$(tput colors)
467     if test -n "$ncolors" && test $ncolors -ge 8; then
468         bold_color=$(tput bold)
469         warn_color=$(tput setaf 3)
470         error_color=$(tput setaf 1)
471         reset_color=$(tput sgr0)
472     fi
473     # 72 used instead of 80 since that's the default of pr
474     ncols=$(tput cols)
475 fi
476 : ${ncols:=72}
477
478 log(){
479     echo "$@" >> $logfile
480 }
481
482 log_file(){
483     log BEGIN $1
484     pr -n -t $1 >> $logfile
485     log END $1
486 }
487
488 warn(){
489     log "WARNING: $*"
490     WARNINGS="${WARNINGS}WARNING: $*\n"
491 }
492
493 die(){
494     log "$@"
495     echo "$error_color$bold_color$@$reset_color"
496     cat <<EOF
497
498 If you think configure made a mistake, make sure you are using the latest
499 version from Git.  If the latest version fails, report the problem to the
500 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
501 EOF
502     if disabled logging; then
503         cat <<EOF
504 Rerun configure with logging enabled (do not use --disable-logging), and
505 include the log this produces with your report.
506 EOF
507     else
508         cat <<EOF
509 Include the log file "$logfile" produced by configure as this will help
510 solve the problem.
511 EOF
512     fi
513     exit 1
514 }
515
516 # Avoid locale weirdness, besides we really just want to translate ASCII.
517 toupper(){
518     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
519 }
520
521 tolower(){
522     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
523 }
524
525 c_escape(){
526     echo "$*" | sed 's/["\\]/\\\0/g'
527 }
528
529 sh_quote(){
530     v=$(echo "$1" | sed "s/'/'\\\\''/g")
531     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
532     echo "$v"
533 }
534
535 cleanws(){
536     echo "$@" | sed 's/^ *//;s/[[:space:]][[:space:]]*/ /g;s/ *$//'
537 }
538
539 filter(){
540     pat=$1
541     shift
542     for v; do
543         eval "case '$v' in $pat) printf '%s ' '$v' ;; esac"
544     done
545 }
546
547 filter_out(){
548     pat=$1
549     shift
550     for v; do
551         eval "case '$v' in $pat) ;; *) printf '%s ' '$v' ;; esac"
552     done
553 }
554
555 map(){
556     m=$1
557     shift
558     for v; do eval $m; done
559 }
560
561 add_suffix(){
562     suffix=$1
563     shift
564     for v; do echo ${v}${suffix}; done
565 }
566
567 set_all(){
568     value=$1
569     shift
570     for var in $*; do
571         eval $var=$value
572     done
573 }
574
575 set_weak(){
576     value=$1
577     shift
578     for var; do
579         eval : \${$var:=$value}
580     done
581 }
582
583 sanitize_var_name(){
584     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
585 }
586
587 set_sanitized(){
588     var=$1
589     shift
590     eval $(sanitize_var_name "$var")='$*'
591 }
592
593 get_sanitized(){
594     eval echo \$$(sanitize_var_name "$1")
595 }
596
597 pushvar(){
598     for pvar in $*; do
599         eval level=\${${pvar}_level:=0}
600         eval ${pvar}_${level}="\$$pvar"
601         eval ${pvar}_level=$(($level+1))
602     done
603 }
604
605 popvar(){
606     for pvar in $*; do
607         eval level=\${${pvar}_level:-0}
608         test $level = 0 && continue
609         eval level=$(($level-1))
610         eval $pvar="\${${pvar}_${level}}"
611         eval ${pvar}_level=$level
612         eval unset ${pvar}_${level}
613     done
614 }
615
616 request(){
617     for var in $*; do
618         eval ${var}_requested=yes
619         eval $var=
620     done
621 }
622
623 enable(){
624     set_all yes $*
625 }
626
627 disable(){
628     set_all no $*
629 }
630
631 enable_weak(){
632     set_weak yes $*
633 }
634
635 disable_weak(){
636     set_weak no $*
637 }
638
639 enable_sanitized(){
640     for var; do
641         enable $(sanitize_var_name $var)
642     done
643 }
644
645 disable_sanitized(){
646     for var; do
647         disable $(sanitize_var_name $var)
648     done
649 }
650
651 do_enable_deep(){
652     for var; do
653         enabled $var && continue
654         eval sel="\$${var}_select"
655         eval sgs="\$${var}_suggest"
656         pushvar var sgs
657         enable_deep $sel
658         popvar sgs
659         enable_deep_weak $sgs
660         popvar var
661     done
662 }
663
664 enable_deep(){
665     do_enable_deep $*
666     enable $*
667 }
668
669 enable_deep_weak(){
670     for var; do
671         disabled $var && continue
672         pushvar var
673         do_enable_deep $var
674         popvar var
675         enable_weak $var
676     done
677 }
678
679 requested(){
680     test "${1#!}" = "$1" && op="=" || op="!="
681     eval test "x\$${1#!}_requested" $op "xyes"
682 }
683
684 enabled(){
685     test "${1#!}" = "$1" && op="=" || op="!="
686     eval test "x\$${1#!}" $op "xyes"
687 }
688
689 disabled(){
690     test "${1#!}" = "$1" && op="=" || op="!="
691     eval test "x\$${1#!}" $op "xno"
692 }
693
694 enabled_all(){
695     for opt; do
696         enabled $opt || return 1
697     done
698 }
699
700 disabled_all(){
701     for opt; do
702         disabled $opt || return 1
703     done
704 }
705
706 enabled_any(){
707     for opt; do
708         enabled $opt && return 0
709     done
710 }
711
712 disabled_any(){
713     for opt; do
714         disabled $opt && return 0
715     done
716     return 1
717 }
718
719 set_default(){
720     for opt; do
721         eval : \${$opt:=\$${opt}_default}
722     done
723 }
724
725 is_in(){
726     value=$1
727     shift
728     for var in $*; do
729         [ $var = $value ] && return 0
730     done
731     return 1
732 }
733
734 check_deps(){
735     for cfg; do
736         enabled ${cfg}_checking && die "Circular dependency for $cfg."
737         disabled ${cfg}_checking && continue
738         enable ${cfg}_checking
739
740         eval dep_all="\$${cfg}_deps"
741         eval dep_any="\$${cfg}_deps_any"
742         eval dep_con="\$${cfg}_conflict"
743         eval dep_sel="\$${cfg}_select"
744         eval dep_sgs="\$${cfg}_suggest"
745         eval dep_ifa="\$${cfg}_if"
746         eval dep_ifn="\$${cfg}_if_any"
747
748         pushvar cfg dep_all dep_any dep_con dep_sel dep_sgs dep_ifa dep_ifn
749         check_deps $dep_all $dep_any $dep_con $dep_sel $dep_sgs $dep_ifa $dep_ifn
750         popvar cfg dep_all dep_any dep_con dep_sel dep_sgs dep_ifa dep_ifn
751
752         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
753         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
754         enabled_all  $dep_all || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but not all dependencies are satisfied: $dep_all"; }
755         enabled_any  $dep_any || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but not any dependency is satisfied: $dep_any"; }
756         disabled_all $dep_con || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but some conflicting dependencies are unsatisfied: $dep_con"; }
757         disabled_any $dep_sel && { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but some selected dependency is unsatisfied: $dep_sel"; }
758
759         enabled $cfg && enable_deep_weak $dep_sel $dep_sgs
760
761         for dep in $dep_all $dep_any $dep_sel $dep_sgs; do
762             # filter out library deps, these do not belong in extralibs
763             is_in $dep $LIBRARY_LIST && continue
764             enabled $dep && eval append ${cfg}_extralibs ${dep}_extralibs
765         done
766
767         disable ${cfg}_checking
768     done
769 }
770
771 print_config(){
772     pfx=$1
773     files=$2
774     shift 2
775     map 'eval echo "$v \${$v:-no}"' "$@" |
776     awk "BEGIN { split(\"$files\", files) }
777         {
778             c = \"$pfx\" toupper(\$1);
779             v = \$2;
780             sub(/yes/, 1, v);
781             sub(/no/,  0, v);
782             for (f in files) {
783                 file = files[f];
784                 if (file ~ /\\.h\$/) {
785                     printf(\"#define %s %d\\n\", c, v) >>file;
786                 } else if (file ~ /\\.asm\$/) {
787                     printf(\"%%define %s %d\\n\", c, v) >>file;
788                 } else if (file ~ /\\.mak\$/) {
789                     n = -v ? \"\" : \"!\";
790                     printf(\"%s%s=yes\\n\", n, c) >>file;
791                 } else if (file ~ /\\.texi\$/) {
792                     pre = -v ? \"\" : \"@c \";
793                     yesno = \$2;
794                     c2 = tolower(c);
795                     gsub(/_/, \"-\", c2);
796                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
797                 }
798             }
799         }"
800 }
801
802 print_enabled(){
803     suf=$1
804     shift
805     for v; do
806         enabled $v && printf "%s\n" ${v%$suf}
807     done
808 }
809
810 append(){
811     var=$1
812     shift
813     eval "$var=\"\$$var $*\""
814 }
815
816 prepend(){
817     var=$1
818     shift
819     eval "$var=\"$* \$$var\""
820 }
821
822 unique(){
823     var=$1
824     uniq_list=""
825     for tok in $(eval echo \$$var); do
826         uniq_list="$(filter_out $tok $uniq_list) $tok"
827     done
828     eval "$var=\"${uniq_list}\""
829 }
830
831 resolve(){
832     var=$1
833     tmpvar=
834     for entry in $(eval echo \$$var); do
835         tmpvar="$tmpvar $(eval echo \$${entry})"
836     done
837     eval "$var=\"${tmpvar}\""
838 }
839
840 add_cppflags(){
841     append CPPFLAGS "$@"
842 }
843
844 add_cflags(){
845     append CFLAGS $($cflags_filter "$@")
846 }
847
848 add_cflags_headers(){
849     append CFLAGS_HEADERS $($cflags_filter "$@")
850 }
851
852 add_cxxflags(){
853     append CXXFLAGS $($cflags_filter "$@")
854 }
855
856 add_asflags(){
857     append ASFLAGS $($asflags_filter "$@")
858 }
859
860 add_objcflags(){
861     append OBJCFLAGS $($objcflags_filter "$@")
862 }
863
864 add_ldflags(){
865     append LDFLAGS $($ldflags_filter "$@")
866 }
867
868 add_ldexeflags(){
869     append LDEXEFLAGS $($ldflags_filter "$@")
870 }
871
872 add_ldsoflags(){
873     append LDSOFLAGS $($ldflags_filter "$@")
874 }
875
876 add_stripflags(){
877     append ASMSTRIPFLAGS "$@"
878 }
879
880 add_extralibs(){
881     prepend extralibs $($ldflags_filter "$@")
882 }
883
884 add_host_cppflags(){
885     append host_cppflags "$@"
886 }
887
888 add_host_cflags(){
889     append host_cflags $($host_cflags_filter "$@")
890 }
891
892 add_host_ldflags(){
893     append host_ldflags $($host_ldflags_filter "$@")
894 }
895
896 add_compat(){
897     append compat_objs $1
898     shift
899     map 'add_cppflags -D$v' "$@"
900 }
901
902 check_cmd(){
903     log "$@"
904     "$@" >> $logfile 2>&1
905 }
906
907 check_stat(){
908     log check_stat "$@"
909     stat "$1" >> $logfile 2>&1
910 }
911
912 cc_o(){
913     eval printf '%s\\n' $CC_O
914 }
915
916 cc_e(){
917     eval printf '%s\\n' $CC_E
918 }
919
920 check_cc(){
921     log check_cc "$@"
922     cat > $TMPC
923     log_file $TMPC
924     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
925 }
926
927 check_cxx(){
928     log check_cxx "$@"
929     cat > $TMPCPP
930     log_file $TMPCPP
931     check_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
932 }
933
934 check_objcc(){
935     log check_objcc "$@"
936     cat > $TMPM
937     log_file $TMPM
938     check_cmd $objcc -Werror=missing-prototypes $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPM
939 }
940
941 check_cpp(){
942     log check_cpp "$@"
943     cat > $TMPC
944     log_file $TMPC
945     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
946 }
947
948 as_o(){
949     eval printf '%s\\n' $AS_O
950 }
951
952 check_as(){
953     log check_as "$@"
954     cat > $TMPS
955     log_file $TMPS
956     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
957 }
958
959 check_inline_asm(){
960     log check_inline_asm "$@"
961     name="$1"
962     code="$2"
963     shift 2
964     disable $name
965     check_cc "$@" <<EOF && enable $name
966 void foo(void){ __asm__ volatile($code); }
967 EOF
968 }
969
970 check_inline_asm_flags(){
971     log check_inline_asm_flags "$@"
972     name="$1"
973     code="$2"
974     flags=''
975     shift 2
976     while [ "$1" != "" ]; do
977       append flags $1
978       shift
979     done;
980     disable $name
981     cat > $TMPC <<EOF
982 void foo(void){ __asm__ volatile($code); }
983 EOF
984     log_file $TMPC
985     check_cmd $cc $CPPFLAGS $CFLAGS $flags "$@" $CC_C $(cc_o $TMPO) $TMPC &&
986     enable $name && add_cflags $flags && add_asflags $flags && add_ldflags $flags
987 }
988
989 check_insn(){
990     log check_insn "$@"
991     check_inline_asm ${1}_inline "\"$2\""
992     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
993 }
994
995 check_x86asm(){
996     log check_x86asm "$@"
997     echo "$1" > $TMPS
998     log_file $TMPS
999     shift 1
1000     check_cmd $x86asmexe $X86ASMFLAGS -Werror "$@" -o $TMPO $TMPS
1001 }
1002
1003 ld_o(){
1004     eval printf '%s\\n' $LD_O
1005 }
1006
1007 check_ld(){
1008     log check_ld "$@"
1009     type=$1
1010     shift 1
1011     flags=$(filter_out '-l*|*.so' $@)
1012     libs=$(filter '-l*|*.so' $@)
1013     check_$type $($cflags_filter $flags) || return
1014     flags=$($ldflags_filter $flags)
1015     libs=$($ldflags_filter $libs)
1016     check_cmd $ld $LDFLAGS $LDEXEFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
1017 }
1018
1019 print_include(){
1020     hdr=$1
1021     test "${hdr%.h}" = "${hdr}" &&
1022         echo "#include $hdr"    ||
1023         echo "#include <$hdr>"
1024 }
1025
1026 check_code(){
1027     log check_code "$@"
1028     check=$1
1029     headers=$2
1030     code=$3
1031     shift 3
1032     {
1033         for hdr in $headers; do
1034             print_include $hdr
1035         done
1036         echo "int main(void) { $code; return 0; }"
1037     } | check_$check "$@"
1038 }
1039
1040 check_cppflags(){
1041     log check_cppflags "$@"
1042     check_cpp "$@" <<EOF && append CPPFLAGS "$@"
1043 #include <stdlib.h>
1044 EOF
1045 }
1046
1047 test_cflags(){
1048     log test_cflags "$@"
1049     set -- $($cflags_filter "$@")
1050     check_cc "$@" <<EOF
1051 int x;
1052 EOF
1053 }
1054
1055 check_cflags(){
1056     log check_cflags "$@"
1057     test_cflags "$@" && add_cflags "$@"
1058 }
1059
1060 check_cxxflags(){
1061     log check_cxxflags "$@"
1062     set -- $($cflags_filter "$@")
1063     check_cxx "$@" <<EOF && append CXXFLAGS "$@"
1064 int x;
1065 EOF
1066 }
1067
1068 test_objcflags(){
1069     log test_objcflags "$@"
1070     set -- $($objcflags_filter "$@")
1071     check_objcc "$@" <<EOF
1072 int x;
1073 EOF
1074 }
1075
1076 check_objcflags(){
1077     log check_objcflags "$@"
1078     test_objcflags "$@" && add_objcflags "$@"
1079 }
1080
1081 test_ldflags(){
1082     log test_ldflags "$@"
1083     set -- $($ldflags_filter "$@")
1084     check_ld "cc" "$@" <<EOF
1085 int main(void){ return 0; }
1086 EOF
1087 }
1088
1089 check_ldflags(){
1090     log check_ldflags "$@"
1091     test_ldflags "$@" && add_ldflags "$@"
1092 }
1093
1094 test_stripflags(){
1095     log test_stripflags "$@"
1096     # call check_cc to get a fresh TMPO
1097     check_cc <<EOF
1098 int main(void) { return 0; }
1099 EOF
1100     check_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
1101 }
1102
1103 check_stripflags(){
1104     log check_stripflags "$@"
1105     test_stripflags "$@" && add_stripflags "$@"
1106 }
1107
1108 check_header(){
1109     log check_header "$@"
1110     headers=$1
1111     shift
1112     disable_sanitized $headers
1113     {
1114         for hdr in $headers; do
1115             print_include $hdr
1116         done
1117         echo "int x;"
1118     } | check_cpp "$@" && enable_sanitized $headers
1119 }
1120
1121 check_header_objcc(){
1122     log check_header_objcc "$@"
1123     rm -f -- "$TMPO"
1124     header=$1
1125     shift
1126     disable_sanitized $header
1127     {
1128        echo "#include <$header>"
1129        echo "int main(void) { return 0; }"
1130     } | check_objcc && check_stat "$TMPO" && enable_sanitized $header
1131 }
1132
1133 check_apple_framework(){
1134     log check_apple_framework "$@"
1135     framework="$1"
1136     name="$(tolower $framework)"
1137     header="${framework}/${framework}.h"
1138     disable $name
1139     check_header_objcc $header &&
1140         enable $name && eval ${name}_extralibs='"-framework $framework"'
1141 }
1142
1143 check_func(){
1144     log check_func "$@"
1145     func=$1
1146     shift
1147     disable $func
1148     check_ld "cc" "$@" <<EOF && enable $func
1149 extern int $func();
1150 int main(void){ $func(); }
1151 EOF
1152 }
1153
1154 check_complexfunc(){
1155     log check_complexfunc "$@"
1156     func=$1
1157     narg=$2
1158     shift 2
1159     test $narg = 2 && args="f, g" || args="f * I"
1160     disable $func
1161     check_ld "cc" "$@" <<EOF && enable $func
1162 #include <complex.h>
1163 #include <math.h>
1164 float foo(complex float f, complex float g) { return $func($args); }
1165 int main(void){ return (int) foo; }
1166 EOF
1167 }
1168
1169 check_mathfunc(){
1170     log check_mathfunc "$@"
1171     func=$1
1172     narg=$2
1173     shift 2
1174     test $narg = 2 && args="f, g" || args="f"
1175     disable $func
1176     check_ld "cc" "$@" <<EOF && enable $func
1177 #include <math.h>
1178 float foo(float f, float g) { return $func($args); }
1179 int main(void){ return (int) foo; }
1180 EOF
1181 }
1182
1183 check_func_headers(){
1184     log check_func_headers "$@"
1185     headers=$1
1186     funcs=$2
1187     shift 2
1188     {
1189         for hdr in $headers; do
1190             print_include $hdr
1191         done
1192         echo "#include <stdint.h>"
1193         for func in $funcs; do
1194             echo "long check_$func(void) { return (long) $func; }"
1195         done
1196         echo "int main(void) { int ret = 0;"
1197         # LTO could optimize out the test functions without this
1198         for func in $funcs; do
1199             echo " ret |= ((intptr_t)check_$func) & 0xFFFF;"
1200         done
1201         echo "return ret; }"
1202     } | check_ld "cc" "$@" && enable $funcs && enable_sanitized $headers
1203 }
1204
1205 check_class_headers_cpp(){
1206     log check_class_headers_cpp "$@"
1207     headers=$1
1208     classes=$2
1209     shift 2
1210     {
1211         for hdr in $headers; do
1212             echo "#include <$hdr>"
1213         done
1214         echo "int main(void) { "
1215         i=1
1216         for class in $classes; do
1217             echo "$class obj$i;"
1218             i=$(expr $i + 1)
1219         done
1220         echo "return 0; }"
1221     } | check_ld "cxx" "$@" && enable $funcs && enable_sanitized $headers
1222 }
1223
1224 check_cpp_condition(){
1225     log check_cpp_condition "$@"
1226     header=$1
1227     condition=$2
1228     shift 2
1229     check_cpp "$@" <<EOF
1230 #include <$header>
1231 #if !($condition)
1232 #error "unsatisfied condition: $condition"
1233 #endif
1234 EOF
1235 }
1236
1237 test_cflags_cc(){
1238     log test_cflags_cc "$@"
1239     flags=$1
1240     header=$2
1241     condition=$3
1242     shift 3
1243     set -- $($cflags_filter "$flags")
1244     check_cc "$@" <<EOF
1245 #include <$header>
1246 #if !($condition)
1247 #error "unsatisfied condition: $condition"
1248 #endif
1249 EOF
1250 }
1251
1252 check_lib(){
1253     log check_lib "$@"
1254     name="$1"
1255     headers="$2"
1256     funcs="$3"
1257     shift 3
1258     disable $name
1259     check_func_headers "$headers" "$funcs" "$@" &&
1260         enable $name && eval ${name}_extralibs="\$@"
1261 }
1262
1263 check_lib_cpp(){
1264     log check_lib_cpp "$@"
1265     name="$1"
1266     headers="$2"
1267     classes="$3"
1268     shift 3
1269     disable $name
1270     check_class_headers_cpp "$headers" "$classes" "$@" &&
1271         enable $name && eval ${name}_extralibs="\$@"
1272 }
1273
1274 test_pkg_config(){
1275     log test_pkg_config "$@"
1276     name="$1"
1277     pkg_version="$2"
1278     pkg="${2%% *}"
1279     headers="$3"
1280     funcs="$4"
1281     shift 4
1282     disable $name
1283     check_cmd $pkg_config --exists --print-errors $pkg_version || return
1284     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1285     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1286     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1287         enable $name &&
1288         set_sanitized "${name}_cflags"    $pkg_cflags &&
1289         set_sanitized "${name}_extralibs" $pkg_libs
1290 }
1291
1292 check_pkg_config(){
1293     log check_pkg_config "$@"
1294     name="$1"
1295     test_pkg_config "$@" &&
1296         eval add_cflags \$${name}_cflags
1297 }
1298
1299 check_exec(){
1300     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1301 }
1302
1303 check_exec_crash(){
1304     log check_exec_crash "$@"
1305     code=$(cat)
1306
1307     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1308     # are safe but may not be available everywhere.  Thus we use
1309     # raise(SIGTERM) instead.  The check is run in a subshell so we
1310     # can redirect the "Terminated" message from the shell.  SIGBUS
1311     # is not defined by standard C so it is used conditionally.
1312
1313     (check_exec "$@") >> $logfile 2>&1 <<EOF
1314 #include <signal.h>
1315 static void sighandler(int sig){
1316     raise(SIGTERM);
1317 }
1318 int foo(void){
1319     $code
1320 }
1321 int (*func_ptr)(void) = foo;
1322 int main(void){
1323     signal(SIGILL, sighandler);
1324     signal(SIGFPE, sighandler);
1325     signal(SIGSEGV, sighandler);
1326 #ifdef SIGBUS
1327     signal(SIGBUS, sighandler);
1328 #endif
1329     return func_ptr();
1330 }
1331 EOF
1332 }
1333
1334 check_type(){
1335     log check_type "$@"
1336     headers=$1
1337     type=$2
1338     shift 2
1339     disable_sanitized "$type"
1340     check_code cc "$headers" "$type v" "$@" && enable_sanitized "$type"
1341 }
1342
1343 check_struct(){
1344     log check_struct "$@"
1345     headers=$1
1346     struct=$2
1347     member=$3
1348     shift 3
1349     disable_sanitized "${struct}_${member}"
1350     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1351         enable_sanitized "${struct}_${member}"
1352 }
1353
1354 check_builtin(){
1355     log check_builtin "$@"
1356     name=$1
1357     headers=$2
1358     builtin=$3
1359     shift 3
1360     disable "$name"
1361     check_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1362 }
1363
1364 check_compile_assert(){
1365     log check_compile_assert "$@"
1366     name=$1
1367     headers=$2
1368     condition=$3
1369     shift 3
1370     disable "$name"
1371     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1372 }
1373
1374 require(){
1375     log require "$@"
1376     name_version="$1"
1377     name="${1%% *}"
1378     headers="$2"
1379     func="$3"
1380     shift 3
1381     check_lib $name "$headers" $func "$@" || die "ERROR: $name_version not found"
1382 }
1383
1384 require_cpp(){
1385     name="$1"
1386     headers="$2"
1387     classes="$3"
1388     shift 3
1389     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1390 }
1391
1392 require_header(){
1393     log require_header "$@"
1394     headers="$1"
1395     shift
1396     check_header "$headers" "$@" || die "ERROR: $headers not found"
1397 }
1398
1399 require_cpp_condition(){
1400     log require_cpp_condition "$@"
1401     header="$1"
1402     condition="$2"
1403     shift 2
1404     check_cpp_condition "$header" "$condition" "$@" || die "ERROR: $condition not satisfied"
1405 }
1406
1407 require_pkg_config(){
1408     log require_pkg_config "$@"
1409     pkg_version="$2"
1410     check_pkg_config "$@" || die "ERROR: $pkg_version not found using pkg-config$pkg_config_fail_message"
1411 }
1412
1413 hostcc_e(){
1414     eval printf '%s\\n' $HOSTCC_E
1415 }
1416
1417 hostcc_o(){
1418     eval printf '%s\\n' $HOSTCC_O
1419 }
1420
1421 check_host_cc(){
1422     log check_host_cc "$@"
1423     cat > $TMPC
1424     log_file $TMPC
1425     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1426 }
1427
1428 check_host_cpp(){
1429     log check_host_cpp "$@"
1430     cat > $TMPC
1431     log_file $TMPC
1432     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1433 }
1434
1435 check_host_cppflags(){
1436     log check_host_cppflags "$@"
1437     check_host_cpp "$@" <<EOF && append host_cppflags "$@"
1438 #include <stdlib.h>
1439 EOF
1440 }
1441
1442 check_host_cflags(){
1443     log check_host_cflags "$@"
1444     set -- $($host_cflags_filter "$@")
1445     check_host_cc "$@" <<EOF && append host_cflags "$@"
1446 int x;
1447 EOF
1448 }
1449
1450 check_host_cpp_condition(){
1451     log check_host_cpp_condition "$@"
1452     header=$1
1453     condition=$2
1454     shift 2
1455     check_host_cpp "$@" <<EOF
1456 #include <$header>
1457 #if !($condition)
1458 #error "unsatisfied condition: $condition"
1459 #endif
1460 EOF
1461 }
1462
1463 cp_if_changed(){
1464     cmp -s "$1" "$2" && { test "$quiet" != "yes" && echo "$2 is unchanged"; } && return
1465     mkdir -p "$(dirname $2)"
1466     cp -f "$1" "$2"
1467 }
1468
1469 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1470 # system-dependent things.
1471
1472 AVCODEC_COMPONENTS="
1473     bsfs
1474     decoders
1475     encoders
1476     hwaccels
1477     parsers
1478 "
1479
1480 AVDEVICE_COMPONENTS="
1481     indevs
1482     outdevs
1483 "
1484
1485 AVFILTER_COMPONENTS="
1486     filters
1487 "
1488
1489 AVFORMAT_COMPONENTS="
1490     demuxers
1491     muxers
1492     protocols
1493 "
1494
1495 COMPONENT_LIST="
1496     $AVCODEC_COMPONENTS
1497     $AVDEVICE_COMPONENTS
1498     $AVFILTER_COMPONENTS
1499     $AVFORMAT_COMPONENTS
1500 "
1501
1502 EXAMPLE_LIST="
1503     avio_dir_cmd_example
1504     avio_reading_example
1505     decode_audio_example
1506     decode_video_example
1507     demuxing_decoding_example
1508     encode_audio_example
1509     encode_video_example
1510     extract_mvs_example
1511     filter_audio_example
1512     filtering_audio_example
1513     filtering_video_example
1514     http_multiclient_example
1515     hw_decode_example
1516     metadata_example
1517     muxing_example
1518     qsvdec_example
1519     remuxing_example
1520     resampling_audio_example
1521     scaling_video_example
1522     transcode_aac_example
1523     transcoding_example
1524 "
1525
1526 EXTERNAL_AUTODETECT_LIBRARY_LIST="
1527     alsa
1528     appkit
1529     avfoundation
1530     bzlib
1531     coreimage
1532     iconv
1533     libxcb
1534     libxcb_shm
1535     libxcb_shape
1536     libxcb_xfixes
1537     lzma
1538     schannel
1539     sdl2
1540     securetransport
1541     sndio
1542     xlib
1543     zlib
1544 "
1545
1546 EXTERNAL_LIBRARY_GPL_LIST="
1547     avisynth
1548     frei0r
1549     libcdio
1550     librubberband
1551     libvidstab
1552     libx264
1553     libx265
1554     libxavs
1555     libxvid
1556 "
1557
1558 EXTERNAL_LIBRARY_NONFREE_LIST="
1559     decklink
1560     libndi_newtek
1561     libfdk_aac
1562     openssl
1563 "
1564
1565 EXTERNAL_LIBRARY_VERSION3_LIST="
1566     gmp
1567     libopencore_amrnb
1568     libopencore_amrwb
1569     libvmaf
1570     libvo_amrwbenc
1571     rkmpp
1572 "
1573
1574 EXTERNAL_LIBRARY_GPLV3_LIST="
1575     libsmbclient
1576 "
1577
1578 EXTERNAL_LIBRARY_LIST="
1579     $EXTERNAL_LIBRARY_GPL_LIST
1580     $EXTERNAL_LIBRARY_NONFREE_LIST
1581     $EXTERNAL_LIBRARY_VERSION3_LIST
1582     $EXTERNAL_LIBRARY_GPLV3_LIST
1583     chromaprint
1584     gcrypt
1585     gnutls
1586     jni
1587     ladspa
1588     libass
1589     libbluray
1590     libbs2b
1591     libcaca
1592     libcelt
1593     libdc1394
1594     libdrm
1595     libflite
1596     libfontconfig
1597     libfreetype
1598     libfribidi
1599     libgme
1600     libgsm
1601     libiec61883
1602     libilbc
1603     libjack
1604     libkvazaar
1605     libmodplug
1606     libmp3lame
1607     libmysofa
1608     libopencv
1609     libopenh264
1610     libopenjpeg
1611     libopenmpt
1612     libopus
1613     libpulse
1614     librsvg
1615     librtmp
1616     libshine
1617     libsmbclient
1618     libsnappy
1619     libsoxr
1620     libspeex
1621     libssh
1622     libtesseract
1623     libtheora
1624     libtwolame
1625     libv4l2
1626     libvorbis
1627     libvpx
1628     libwavpack
1629     libwebp
1630     libxml2
1631     libzimg
1632     libzmq
1633     libzvbi
1634     mediacodec
1635     openal
1636     opengl
1637 "
1638
1639 HWACCEL_AUTODETECT_LIBRARY_LIST="
1640     audiotoolbox
1641     crystalhd
1642     cuda
1643     cuvid
1644     d3d11va
1645     dxva2
1646     nvdec
1647     nvenc
1648     vaapi
1649     vdpau
1650     videotoolbox
1651     v4l2_m2m
1652     xvmc
1653 "
1654
1655 # catchall list of things that require external libs to link
1656 EXTRALIBS_LIST="
1657     cpu_init
1658     cws2fws
1659 "
1660
1661 HWACCEL_LIBRARY_NONFREE_LIST="
1662     cuda_sdk
1663     libnpp
1664 "
1665
1666 HWACCEL_LIBRARY_LIST="
1667     $HWACCEL_LIBRARY_NONFREE_LIST
1668     libmfx
1669     mmal
1670     omx
1671     opencl
1672 "
1673
1674 DOCUMENT_LIST="
1675     doc
1676     htmlpages
1677     manpages
1678     podpages
1679     txtpages
1680 "
1681
1682 FEATURE_LIST="
1683     ftrapv
1684     gray
1685     hardcoded_tables
1686     omx_rpi
1687     runtime_cpudetect
1688     safe_bitstream_reader
1689     shared
1690     small
1691     static
1692     swscale_alpha
1693 "
1694
1695 LIBRARY_LIST="
1696     avcodec
1697     avdevice
1698     avfilter
1699     avformat
1700     avresample
1701     avutil
1702     postproc
1703     swresample
1704     swscale
1705 "
1706
1707 LICENSE_LIST="
1708     gpl
1709     nonfree
1710     version3
1711 "
1712
1713 PROGRAM_LIST="
1714     ffplay
1715     ffprobe
1716     ffserver
1717     ffmpeg
1718 "
1719
1720 SUBSYSTEM_LIST="
1721     dct
1722     dwt
1723     error_resilience
1724     faan
1725     fast_unaligned
1726     fft
1727     lsp
1728     lzo
1729     mdct
1730     pixelutils
1731     network
1732     rdft
1733 "
1734
1735 # COMPONENT_LIST needs to come last to ensure correct dependency checking
1736 CONFIG_LIST="
1737     $DOCUMENT_LIST
1738     $EXAMPLE_LIST
1739     $EXTERNAL_LIBRARY_LIST
1740     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1741     $HWACCEL_LIBRARY_LIST
1742     $HWACCEL_AUTODETECT_LIBRARY_LIST
1743     $FEATURE_LIST
1744     $LICENSE_LIST
1745     $LIBRARY_LIST
1746     $PROGRAM_LIST
1747     $SUBSYSTEM_LIST
1748     autodetect
1749     fontconfig
1750     linux_perf
1751     memory_poisoning
1752     neon_clobber_test
1753     ossfuzz
1754     pic
1755     thumb
1756     valgrind_backtrace
1757     xmm_clobber_test
1758     $COMPONENT_LIST
1759 "
1760
1761 THREADS_LIST="
1762     pthreads
1763     os2threads
1764     w32threads
1765 "
1766
1767 ATOMICS_LIST="
1768     atomics_gcc
1769     atomics_suncc
1770     atomics_win32
1771 "
1772
1773 AUTODETECT_LIBS="
1774     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1775     $HWACCEL_AUTODETECT_LIBRARY_LIST
1776     $THREADS_LIST
1777 "
1778
1779 ARCH_LIST="
1780     aarch64
1781     alpha
1782     arm
1783     avr32
1784     avr32_ap
1785     avr32_uc
1786     bfin
1787     ia64
1788     m68k
1789     mips
1790     mips64
1791     parisc
1792     ppc
1793     ppc64
1794     s390
1795     sh4
1796     sparc
1797     sparc64
1798     tilegx
1799     tilepro
1800     tomi
1801     x86
1802     x86_32
1803     x86_64
1804 "
1805
1806 ARCH_EXT_LIST_ARM="
1807     armv5te
1808     armv6
1809     armv6t2
1810     armv8
1811     neon
1812     vfp
1813     vfpv3
1814     setend
1815 "
1816
1817 ARCH_EXT_LIST_MIPS="
1818     mipsfpu
1819     mips32r2
1820     mips32r5
1821     mips64r2
1822     mips32r6
1823     mips64r6
1824     mipsdsp
1825     mipsdspr2
1826     msa
1827 "
1828
1829 ARCH_EXT_LIST_LOONGSON="
1830     loongson2
1831     loongson3
1832     mmi
1833 "
1834
1835 ARCH_EXT_LIST_X86_SIMD="
1836     aesni
1837     amd3dnow
1838     amd3dnowext
1839     avx
1840     avx2
1841     fma3
1842     fma4
1843     mmx
1844     mmxext
1845     sse
1846     sse2
1847     sse3
1848     sse4
1849     sse42
1850     ssse3
1851     xop
1852 "
1853
1854 ARCH_EXT_LIST_PPC="
1855     altivec
1856     dcbzl
1857     ldbrx
1858     power8
1859     ppc4xx
1860     vsx
1861 "
1862
1863 ARCH_EXT_LIST_X86="
1864     $ARCH_EXT_LIST_X86_SIMD
1865     cpunop
1866     i686
1867 "
1868
1869 ARCH_EXT_LIST="
1870     $ARCH_EXT_LIST_ARM
1871     $ARCH_EXT_LIST_PPC
1872     $ARCH_EXT_LIST_X86
1873     $ARCH_EXT_LIST_MIPS
1874     $ARCH_EXT_LIST_LOONGSON
1875 "
1876
1877 ARCH_FEATURES="
1878     aligned_stack
1879     fast_64bit
1880     fast_clz
1881     fast_cmov
1882     local_aligned
1883     simd_align_16
1884     simd_align_32
1885 "
1886
1887 BUILTIN_LIST="
1888     atomic_cas_ptr
1889     machine_rw_barrier
1890     MemoryBarrier
1891     mm_empty
1892     rdtsc
1893     sarestart
1894     sem_timedwait
1895     sync_val_compare_and_swap
1896 "
1897 HAVE_LIST_CMDLINE="
1898     inline_asm
1899     symver
1900     x86asm
1901 "
1902
1903 HAVE_LIST_PUB="
1904     bigendian
1905     fast_unaligned
1906 "
1907
1908 HEADERS_LIST="
1909     arpa_inet_h
1910     asm_types_h
1911     cdio_paranoia_h
1912     cdio_paranoia_paranoia_h
1913     cuda_h
1914     dispatch_dispatch_h
1915     dev_bktr_ioctl_bt848_h
1916     dev_bktr_ioctl_meteor_h
1917     dev_ic_bt8xx_h
1918     dev_video_bktr_ioctl_bt848_h
1919     dev_video_meteor_ioctl_meteor_h
1920     direct_h
1921     dirent_h
1922     dxgidebug_h
1923     dxva_h
1924     ES2_gl_h
1925     gsm_h
1926     io_h
1927     machine_ioctl_bt848_h
1928     machine_ioctl_meteor_h
1929     malloc_h
1930     opencv2_core_core_c_h
1931     OpenGL_gl3_h
1932     poll_h
1933     sys_param_h
1934     sys_resource_h
1935     sys_select_h
1936     sys_soundcard_h
1937     sys_time_h
1938     sys_un_h
1939     sys_videoio_h
1940     termios_h
1941     udplite_h
1942     unistd_h
1943     valgrind_valgrind_h
1944     windows_h
1945     winsock2_h
1946 "
1947
1948 INTRINSICS_LIST="
1949     intrinsics_neon
1950 "
1951
1952 COMPLEX_FUNCS="
1953     cabs
1954     cexp
1955 "
1956
1957 MATH_FUNCS="
1958     atanf
1959     atan2f
1960     cbrt
1961     cbrtf
1962     copysign
1963     cosf
1964     erf
1965     exp2
1966     exp2f
1967     expf
1968     hypot
1969     isfinite
1970     isinf
1971     isnan
1972     ldexpf
1973     llrint
1974     llrintf
1975     log2
1976     log2f
1977     log10f
1978     lrint
1979     lrintf
1980     powf
1981     rint
1982     round
1983     roundf
1984     sinf
1985     trunc
1986     truncf
1987 "
1988
1989 SYSTEM_FEATURES="
1990     atomics_native
1991     dos_paths
1992     libc_msvcrt
1993     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
1994     section_data_rel_ro
1995     threads
1996     uwp
1997     winrt
1998 "
1999
2000 SYSTEM_FUNCS="
2001     access
2002     aligned_malloc
2003     arc4random
2004     clock_gettime
2005     closesocket
2006     CommandLineToArgvW
2007     fcntl
2008     getaddrinfo
2009     gethrtime
2010     getopt
2011     GetProcessAffinityMask
2012     GetProcessMemoryInfo
2013     GetProcessTimes
2014     getrusage
2015     GetSystemTimeAsFileTime
2016     gettimeofday
2017     glob
2018     glXGetProcAddress
2019     gmtime_r
2020     inet_aton
2021     isatty
2022     kbhit
2023     localtime_r
2024     lstat
2025     lzo1x_999_compress
2026     mach_absolute_time
2027     MapViewOfFile
2028     memalign
2029     mkstemp
2030     mmap
2031     mprotect
2032     nanosleep
2033     PeekNamedPipe
2034     posix_memalign
2035     pthread_cancel
2036     sched_getaffinity
2037     SecItemImport
2038     SetConsoleTextAttribute
2039     SetConsoleCtrlHandler
2040     setmode
2041     setrlimit
2042     Sleep
2043     strerror_r
2044     sysconf
2045     sysctl
2046     usleep
2047     UTGetOSTypeFromString
2048     VirtualAlloc
2049     wglGetProcAddress
2050 "
2051
2052 SYSTEM_LIBRARIES="
2053     vaapi_drm
2054     vaapi_x11
2055     vdpau_x11
2056     wincrypt
2057 "
2058
2059 TOOLCHAIN_FEATURES="
2060     as_arch_directive
2061     as_fpu_directive
2062     as_func
2063     as_object_arch
2064     asm_mod_q
2065     blocks_extension
2066     ebp_available
2067     ebx_available
2068     gnu_as
2069     gnu_windres
2070     ibm_asm
2071     inline_asm_direct_symbol_refs
2072     inline_asm_labels
2073     inline_asm_nonlocal_labels
2074     pragma_deprecated
2075     rsync_contimeout
2076     symver_asm_label
2077     symver_gnu_asm
2078     vfp_args
2079     xform_asm
2080     xmm_clobbers
2081 "
2082
2083 TYPES_LIST="
2084     CONDITION_VARIABLE_Ptr
2085     kCMVideoCodecType_HEVC
2086     socklen_t
2087     struct_addrinfo
2088     struct_group_source_req
2089     struct_ip_mreq_source
2090     struct_ipv6_mreq
2091     struct_msghdr_msg_flags
2092     struct_pollfd
2093     struct_rusage_ru_maxrss
2094     struct_sctp_event_subscribe
2095     struct_sockaddr_in6
2096     struct_sockaddr_sa_len
2097     struct_sockaddr_storage
2098     struct_stat_st_mtim_tv_nsec
2099     struct_v4l2_frmivalenum_discrete
2100 "
2101
2102 HAVE_LIST="
2103     $ARCH_EXT_LIST
2104     $(add_suffix _external $ARCH_EXT_LIST)
2105     $(add_suffix _inline   $ARCH_EXT_LIST)
2106     $ARCH_FEATURES
2107     $ATOMICS_LIST
2108     $BUILTIN_LIST
2109     $COMPLEX_FUNCS
2110     $HAVE_LIST_CMDLINE
2111     $HAVE_LIST_PUB
2112     $HEADERS_LIST
2113     $INTRINSICS_LIST
2114     $MATH_FUNCS
2115     $SYSTEM_FEATURES
2116     $SYSTEM_FUNCS
2117     $SYSTEM_LIBRARIES
2118     $THREADS_LIST
2119     $TOOLCHAIN_FEATURES
2120     $TYPES_LIST
2121     makeinfo
2122     makeinfo_html
2123     opencl_vaapi_beignet
2124     perl
2125     pod2man
2126     texi2html
2127 "
2128
2129 # options emitted with CONFIG_ prefix but not available on the command line
2130 CONFIG_EXTRA="
2131     aandcttables
2132     ac3dsp
2133     adts_header
2134     audio_frame_queue
2135     audiodsp
2136     blockdsp
2137     bswapdsp
2138     cabac
2139     cbs
2140     cbs_h264
2141     cbs_h265
2142     cbs_mpeg2
2143     dirac_parse
2144     dvprofile
2145     exif
2146     faandct
2147     faanidct
2148     fdctdsp
2149     flacdsp
2150     fmtconvert
2151     frame_thread_encoder
2152     g722dsp
2153     golomb
2154     gplv3
2155     h263dsp
2156     h264chroma
2157     h264dsp
2158     h264parse
2159     h264pred
2160     h264qpel
2161     hevcparse
2162     hpeldsp
2163     huffman
2164     huffyuvdsp
2165     huffyuvencdsp
2166     idctdsp
2167     iirfilter
2168     mdct15
2169     intrax8
2170     iso_media
2171     ividsp
2172     jpegtables
2173     lgplv3
2174     libx262
2175     llauddsp
2176     llviddsp
2177     llvidencdsp
2178     lpc
2179     lzf
2180     me_cmp
2181     mpeg_er
2182     mpegaudio
2183     mpegaudiodsp
2184     mpegaudioheader
2185     mpegvideo
2186     mpegvideoenc
2187     mss34dsp
2188     pixblockdsp
2189     qpeldsp
2190     qsv
2191     qsvdec
2192     qsvenc
2193     qsvvpp
2194     rangecoder
2195     riffdec
2196     riffenc
2197     rtpdec
2198     rtpenc_chain
2199     rv34dsp
2200     sinewin
2201     snappy
2202     srtp
2203     startcode
2204     texturedsp
2205     texturedspenc
2206     tpeldsp
2207     vaapi_1
2208     vaapi_encode
2209     vc1dsp
2210     videodsp
2211     vp3dsp
2212     vp56dsp
2213     vp8dsp
2214     wma_freqs
2215     wmv2dsp
2216 "
2217
2218 CMDLINE_SELECT="
2219     $ARCH_EXT_LIST
2220     $CONFIG_LIST
2221     $HAVE_LIST_CMDLINE
2222     $THREADS_LIST
2223     asm
2224     cross_compile
2225     debug
2226     extra_warnings
2227     logging
2228     lto
2229     optimizations
2230     rpath
2231     stripping
2232 "
2233
2234 PATHS_LIST="
2235     bindir
2236     datadir
2237     docdir
2238     incdir
2239     libdir
2240     mandir
2241     pkgconfigdir
2242     prefix
2243     shlibdir
2244     install_name_dir
2245 "
2246
2247 CMDLINE_SET="
2248     $PATHS_LIST
2249     ar
2250     arch
2251     as
2252     assert_level
2253     build_suffix
2254     cc
2255     objcc
2256     cpu
2257     cross_prefix
2258     custom_allocator
2259     cxx
2260     dep_cc
2261     doxygen
2262     env
2263     extra_version
2264     gas
2265     host_cc
2266     host_cflags
2267     host_extralibs
2268     host_ld
2269     host_ldflags
2270     host_os
2271     ignore_tests
2272     install
2273     ld
2274     ln_s
2275     logfile
2276     malloc_prefix
2277     nm
2278     optflags
2279     nvccflags
2280     pkg_config
2281     pkg_config_flags
2282     progs_suffix
2283     random_seed
2284     ranlib
2285     samples
2286     strip
2287     sws_max_filter_size
2288     sysinclude
2289     sysroot
2290     target_exec
2291     target_os
2292     target_path
2293     target_samples
2294     tempprefix
2295     toolchain
2296     valgrind
2297     x86asmexe
2298 "
2299
2300 CMDLINE_APPEND="
2301     extra_cflags
2302     extra_cxxflags
2303     extra_objcflags
2304     host_cppflags
2305 "
2306
2307 # code dependency declarations
2308
2309 # architecture extensions
2310
2311 armv5te_deps="arm"
2312 armv6_deps="arm"
2313 armv6t2_deps="arm"
2314 armv8_deps="aarch64"
2315 neon_deps_any="aarch64 arm"
2316 intrinsics_neon_deps="neon"
2317 vfp_deps_any="aarch64 arm"
2318 vfpv3_deps="vfp"
2319 setend_deps="arm"
2320
2321 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2322
2323 altivec_deps="ppc"
2324 dcbzl_deps="ppc"
2325 ldbrx_deps="ppc"
2326 ppc4xx_deps="ppc"
2327 vsx_deps="altivec"
2328 power8_deps="vsx"
2329
2330 loongson2_deps="mips"
2331 loongson3_deps="mips"
2332 mips32r2_deps="mips"
2333 mips32r5_deps="mips"
2334 mips32r6_deps="mips"
2335 mips64r2_deps="mips"
2336 mips64r6_deps="mips"
2337 mipsfpu_deps="mips"
2338 mipsdsp_deps="mips"
2339 mipsdspr2_deps="mips"
2340 mmi_deps="mips"
2341 msa_deps="mipsfpu"
2342
2343 cpunop_deps="i686"
2344 x86_64_select="i686"
2345 x86_64_suggest="fast_cmov"
2346
2347 amd3dnow_deps="mmx"
2348 amd3dnowext_deps="amd3dnow"
2349 i686_deps="x86"
2350 mmx_deps="x86"
2351 mmxext_deps="mmx"
2352 sse_deps="mmxext"
2353 sse2_deps="sse"
2354 sse3_deps="sse2"
2355 ssse3_deps="sse3"
2356 sse4_deps="ssse3"
2357 sse42_deps="sse4"
2358 aesni_deps="sse42"
2359 avx_deps="sse42"
2360 xop_deps="avx"
2361 fma3_deps="avx"
2362 fma4_deps="avx"
2363 avx2_deps="avx"
2364
2365 mmx_external_deps="x86asm"
2366 mmx_inline_deps="inline_asm x86"
2367 mmx_suggest="mmx_external mmx_inline"
2368
2369 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2370     eval dep=\$${ext}_deps
2371     eval ${ext}_external_deps='"${dep}_external"'
2372     eval ${ext}_inline_deps='"${dep}_inline"'
2373     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2374 done
2375
2376 aligned_stack_if_any="aarch64 ppc x86"
2377 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2378 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2379 fast_unaligned_if_any="aarch64 ppc x86"
2380 simd_align_16_if_any="altivec neon sse"
2381 simd_align_32_if_any="avx"
2382
2383 # system capabilities
2384 symver_if_any="symver_asm_label symver_gnu_asm"
2385 valgrind_backtrace_conflict="optimizations"
2386 valgrind_backtrace_deps="valgrind_valgrind_h"
2387
2388 # threading support
2389 atomics_gcc_if="sync_val_compare_and_swap"
2390 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2391 atomics_win32_if="MemoryBarrier"
2392 atomics_native_if_any="$ATOMICS_LIST"
2393 w32threads_deps="atomics_native"
2394 threads_if_any="$THREADS_LIST"
2395
2396 # subsystems
2397 cbs_h264_select="cbs golomb"
2398 cbs_h265_select="cbs golomb"
2399 cbs_mpeg2_select="cbs"
2400 dct_select="rdft"
2401 dirac_parse_select="golomb"
2402 error_resilience_select="me_cmp"
2403 faandct_deps="faan"
2404 faandct_select="fdctdsp"
2405 faanidct_deps="faan"
2406 faanidct_select="idctdsp"
2407 h264dsp_select="startcode"
2408 hevcparse_select="golomb"
2409 frame_thread_encoder_deps="encoders threads"
2410 intrax8_select="blockdsp idctdsp"
2411 mdct_select="fft"
2412 mdct15_select="fft"
2413 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2414 mpeg_er_select="error_resilience"
2415 mpegaudio_select="mpegaudiodsp mpegaudioheader"
2416 mpegaudiodsp_select="dct"
2417 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2418 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
2419 vc1dsp_select="h264chroma qpeldsp startcode"
2420 rdft_select="fft"
2421
2422 # decoders / encoders
2423 aac_decoder_select="adts_header mdct15 mdct sinewin"
2424 aac_fixed_decoder_select="mdct sinewin"
2425 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2426 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2427 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2428 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2429 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2430 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2431 adpcm_g722_decoder_select="g722dsp"
2432 adpcm_g722_encoder_select="g722dsp"
2433 aic_decoder_select="golomb idctdsp"
2434 alac_encoder_select="lpc"
2435 als_decoder_select="bswapdsp"
2436 amrnb_decoder_select="lsp"
2437 amrwb_decoder_select="lsp"
2438 amv_decoder_select="sp5x_decoder exif"
2439 amv_encoder_select="aandcttables jpegtables mpegvideoenc"
2440 ape_decoder_select="bswapdsp llauddsp"
2441 apng_decoder_deps="zlib"
2442 apng_encoder_deps="zlib"
2443 apng_encoder_select="llvidencdsp"
2444 aptx_decoder_select="audio_frame_queue"
2445 aptx_encoder_select="audio_frame_queue"
2446 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2447 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2448 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2449 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2450 atrac1_decoder_select="mdct sinewin"
2451 atrac3_decoder_select="mdct"
2452 atrac3p_decoder_select="mdct sinewin"
2453 avrn_decoder_select="exif jpegtables"
2454 bink_decoder_select="blockdsp hpeldsp"
2455 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2456 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2457 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2458 clearvideo_decoder_select="idctdsp"
2459 cllc_decoder_select="bswapdsp"
2460 comfortnoise_encoder_select="lpc"
2461 cook_decoder_select="audiodsp mdct sinewin"
2462 cscd_decoder_select="lzo"
2463 cscd_decoder_suggest="zlib"
2464 dca_decoder_select="mdct"
2465 dds_decoder_select="texturedsp"
2466 dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
2467 dnxhd_decoder_select="blockdsp idctdsp"
2468 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2469 dolby_e_decoder_select="mdct"
2470 dvvideo_decoder_select="dvprofile idctdsp"
2471 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2472 dxa_decoder_deps="zlib"
2473 dxv_decoder_select="lzf texturedsp"
2474 eac3_decoder_select="ac3_decoder"
2475 eac3_encoder_select="ac3_encoder"
2476 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2477 eatgq_decoder_select="aandcttables"
2478 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2479 exr_decoder_deps="zlib"
2480 ffv1_decoder_select="rangecoder"
2481 ffv1_encoder_select="rangecoder"
2482 ffvhuff_decoder_select="huffyuv_decoder"
2483 ffvhuff_encoder_select="huffyuv_encoder"
2484 fic_decoder_select="golomb"
2485 flac_decoder_select="flacdsp"
2486 flac_encoder_select="bswapdsp flacdsp lpc"
2487 flashsv2_decoder_deps="zlib"
2488 flashsv2_encoder_deps="zlib"
2489 flashsv_decoder_deps="zlib"
2490 flashsv_encoder_deps="zlib"
2491 flv_decoder_select="h263_decoder"
2492 flv_encoder_select="h263_encoder"
2493 fourxm_decoder_select="blockdsp bswapdsp"
2494 fraps_decoder_select="bswapdsp huffman"
2495 g2m_decoder_deps="zlib"
2496 g2m_decoder_select="blockdsp idctdsp jpegtables"
2497 g729_decoder_select="audiodsp"
2498 h261_decoder_select="mpegvideo"
2499 h261_encoder_select="aandcttables mpegvideoenc"
2500 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2501 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2502 h263i_decoder_select="h263_decoder"
2503 h263p_decoder_select="h263_decoder"
2504 h263p_encoder_select="h263_encoder"
2505 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
2506 h264_decoder_suggest="error_resilience"
2507 hap_decoder_select="snappy texturedsp"
2508 hap_encoder_deps="libsnappy"
2509 hap_encoder_select="texturedspenc"
2510 hevc_decoder_select="bswapdsp cabac golomb hevcparse videodsp"
2511 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2512 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llvidencdsp"
2513 iac_decoder_select="imc_decoder"
2514 imc_decoder_select="bswapdsp fft mdct sinewin"
2515 indeo3_decoder_select="hpeldsp"
2516 indeo4_decoder_select="ividsp"
2517 indeo5_decoder_select="ividsp"
2518 interplay_video_decoder_select="hpeldsp"
2519 jpegls_decoder_select="mjpeg_decoder"
2520 jv_decoder_select="blockdsp"
2521 lagarith_decoder_select="llviddsp"
2522 ljpeg_encoder_select="aandcttables idctdsp jpegtables mpegvideoenc"
2523 magicyuv_decoder_select="llviddsp"
2524 magicyuv_encoder_select="llvidencdsp"
2525 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2526 metasound_decoder_select="lsp mdct sinewin"
2527 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2528 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2529 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2530 mjpegb_decoder_select="mjpeg_decoder"
2531 mlp_decoder_select="mlp_parser"
2532 mlp_encoder_select="lpc"
2533 motionpixels_decoder_select="bswapdsp"
2534 mp1_decoder_select="mpegaudio"
2535 mp1float_decoder_select="mpegaudio"
2536 mp2_decoder_select="mpegaudio"
2537 mp2float_decoder_select="mpegaudio"
2538 mp3_decoder_select="mpegaudio"
2539 mp3adu_decoder_select="mpegaudio"
2540 mp3adufloat_decoder_select="mpegaudio"
2541 mp3float_decoder_select="mpegaudio"
2542 mp3on4_decoder_select="mpegaudio"
2543 mp3on4float_decoder_select="mpegaudio"
2544 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2545 mpc8_decoder_select="mpegaudiodsp"
2546 mpegvideo_decoder_select="mpegvideo"
2547 mpeg1video_decoder_select="mpegvideo"
2548 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2549 mpeg2video_decoder_select="mpegvideo"
2550 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2551 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2552 mpeg4_encoder_select="h263_encoder"
2553 msa1_decoder_select="mss34dsp"
2554 mscc_decoder_deps="zlib"
2555 msmpeg4v1_decoder_select="h263_decoder"
2556 msmpeg4v2_decoder_select="h263_decoder"
2557 msmpeg4v2_encoder_select="h263_encoder"
2558 msmpeg4v3_decoder_select="h263_decoder"
2559 msmpeg4v3_encoder_select="h263_encoder"
2560 mss2_decoder_select="mpegvideo qpeldsp vc1_decoder"
2561 mts2_decoder_select="mss34dsp"
2562 mxpeg_decoder_select="mjpeg_decoder"
2563 nellymoser_decoder_select="mdct sinewin"
2564 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2565 nuv_decoder_select="idctdsp lzo"
2566 on2avc_decoder_select="mdct"
2567 opus_decoder_deps="swresample"
2568 opus_decoder_select="mdct15"
2569 opus_encoder_select="audio_frame_queue mdct15"
2570 png_decoder_deps="zlib"
2571 png_encoder_deps="zlib"
2572 png_encoder_select="llvidencdsp"
2573 prores_decoder_select="blockdsp idctdsp"
2574 prores_encoder_select="fdctdsp"
2575 qcelp_decoder_select="lsp"
2576 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2577 ra_144_decoder_select="audiodsp"
2578 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2579 ralf_decoder_select="golomb"
2580 rawvideo_decoder_select="bswapdsp"
2581 rscc_decoder_deps="zlib"
2582 rtjpeg_decoder_select="me_cmp"
2583 rv10_decoder_select="h263_decoder"
2584 rv10_encoder_select="h263_encoder"
2585 rv20_decoder_select="h263_decoder"
2586 rv20_encoder_select="h263_encoder"
2587 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2588 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2589 screenpresso_decoder_deps="zlib"
2590 shorten_decoder_select="bswapdsp"
2591 sipr_decoder_select="lsp"
2592 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2593 snow_encoder_select="aandcttables dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2594 sonic_decoder_select="golomb rangecoder"
2595 sonic_encoder_select="golomb rangecoder"
2596 sonic_ls_encoder_select="golomb rangecoder"
2597 sp5x_decoder_select="mjpeg_decoder"
2598 srgc_decoder_deps="zlib"
2599 svq1_decoder_select="hpeldsp"
2600 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2601 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2602 svq3_decoder_suggest="zlib"
2603 tak_decoder_select="audiodsp"
2604 tdsc_decoder_deps="zlib"
2605 tdsc_decoder_select="mjpeg_decoder"
2606 theora_decoder_select="vp3_decoder"
2607 thp_decoder_select="mjpeg_decoder"
2608 tiff_decoder_suggest="zlib lzma"
2609 tiff_encoder_suggest="zlib"
2610 truehd_decoder_select="mlp_parser"
2611 truehd_encoder_select="lpc"
2612 truemotion2_decoder_select="bswapdsp"
2613 truespeech_decoder_select="bswapdsp"
2614 tscc_decoder_deps="zlib"
2615 twinvq_decoder_select="mdct lsp sinewin"
2616 txd_decoder_select="texturedsp"
2617 utvideo_decoder_select="bswapdsp llviddsp"
2618 utvideo_encoder_select="bswapdsp huffman llvidencdsp"
2619 vble_decoder_select="llviddsp"
2620 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 mpegvideo vc1dsp"
2621 vc1image_decoder_select="vc1_decoder"
2622 vorbis_decoder_select="mdct"
2623 vorbis_encoder_select="mdct"
2624 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2625 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2626 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2627 vp6a_decoder_select="vp6_decoder"
2628 vp6f_decoder_select="vp6_decoder"
2629 vp7_decoder_select="h264pred videodsp vp8dsp"
2630 vp8_decoder_select="h264pred videodsp vp8dsp"
2631 vp9_decoder_select="videodsp vp9_parser"
2632 webp_decoder_select="vp8_decoder exif"
2633 wmalossless_decoder_select="llauddsp"
2634 wmapro_decoder_select="mdct sinewin wma_freqs"
2635 wmav1_decoder_select="mdct sinewin wma_freqs"
2636 wmav1_encoder_select="mdct sinewin wma_freqs"
2637 wmav2_decoder_select="mdct sinewin wma_freqs"
2638 wmav2_encoder_select="mdct sinewin wma_freqs"
2639 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2640 wmv1_decoder_select="h263_decoder"
2641 wmv1_encoder_select="h263_encoder"
2642 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2643 wmv2_encoder_select="h263_encoder wmv2dsp"
2644 wmv3_decoder_select="vc1_decoder"
2645 wmv3image_decoder_select="wmv3_decoder"
2646 xma1_decoder_select="wmapro_decoder"
2647 xma2_decoder_select="wmapro_decoder"
2648 zerocodec_decoder_deps="zlib"
2649 zlib_decoder_deps="zlib"
2650 zlib_encoder_deps="zlib"
2651 zmbv_decoder_deps="zlib"
2652 zmbv_encoder_deps="zlib"
2653
2654 # hardware accelerators
2655 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2656 cuda_deps_any="libdl LoadLibrary"
2657 cuvid_deps="cuda"
2658 d3d11va_deps="dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2659 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode ole32 user32"
2660 nvdec_deps="cuda"
2661 videotoolbox_hwaccel_deps="videotoolbox pthreads"
2662 videotoolbox_hwaccel_extralibs="-framework QuartzCore"
2663 xvmc_deps="X11_extensions_XvMClib_h"
2664
2665 h263_vaapi_hwaccel_deps="vaapi"
2666 h263_vaapi_hwaccel_select="h263_decoder"
2667 h263_videotoolbox_hwaccel_deps="videotoolbox"
2668 h263_videotoolbox_hwaccel_select="h263_decoder"
2669 h264_cuvid_hwaccel_select="h264_cuvid_decoder"
2670 h264_d3d11va_hwaccel_deps="d3d11va"
2671 h264_d3d11va_hwaccel_select="h264_decoder"
2672 h264_d3d11va2_hwaccel_deps="d3d11va"
2673 h264_d3d11va2_hwaccel_select="h264_decoder"
2674 h264_dxva2_hwaccel_deps="dxva2"
2675 h264_dxva2_hwaccel_select="h264_decoder"
2676 h264_mediacodec_hwaccel_deps="mediacodec"
2677 h264_mmal_hwaccel_deps="mmal"
2678 h264_nvdec_hwaccel_deps="nvdec"
2679 h264_nvdec_hwaccel_select="h264_decoder"
2680 h264_qsv_hwaccel_deps="libmfx"
2681 h264_vaapi_hwaccel_deps="vaapi"
2682 h264_vaapi_hwaccel_select="h264_decoder"
2683 h264_vdpau_hwaccel_deps="vdpau"
2684 h264_vdpau_hwaccel_select="h264_decoder"
2685 h264_videotoolbox_hwaccel_deps="videotoolbox"
2686 h264_videotoolbox_hwaccel_select="h264_decoder"
2687 hevc_cuvid_hwaccel_select="hevc_cuvid_decoder"
2688 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2689 hevc_d3d11va_hwaccel_select="hevc_decoder"
2690 hevc_mediacodec_hwaccel_deps="mediacodec"
2691 hevc_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2692 hevc_d3d11va2_hwaccel_select="hevc_decoder"
2693 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2694 hevc_dxva2_hwaccel_select="hevc_decoder"
2695 hevc_nvdec_hwaccel_deps="nvdec"
2696 hevc_nvdec_hwaccel_select="hevc_decoder"
2697 hevc_qsv_hwaccel_deps="libmfx"
2698 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2699 hevc_vaapi_hwaccel_select="hevc_decoder"
2700 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2701 hevc_vdpau_hwaccel_select="hevc_decoder"
2702 hevc_videotoolbox_hwaccel_deps="videotoolbox"
2703 hevc_videotoolbox_hwaccel_select="hevc_decoder"
2704 mjpeg_cuvid_hwaccel_select="mjpeg_cuvid_decoder"
2705 mpeg_xvmc_hwaccel_deps="xvmc"
2706 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2707 mpeg1_cuvid_hwaccel_select="mpeg1_cuvid_decoder"
2708 mpeg1_nvdec_hwaccel_deps="nvdec"
2709 mpeg1_nvdec_hwaccel_select="mpeg1video_decoder"
2710 mpeg1_vdpau_hwaccel_deps="vdpau"
2711 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2712 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2713 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2714 mpeg1_xvmc_hwaccel_deps="xvmc"
2715 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2716 mpeg2_cuvid_hwaccel_select="mpeg2_cuvid_decoder"
2717 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2718 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2719 mpeg2_d3d11va2_hwaccel_deps="d3d11va"
2720 mpeg2_d3d11va2_hwaccel_select="mpeg2video_decoder"
2721 mpeg2_dxva2_hwaccel_deps="dxva2"
2722 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2723 mpeg2_mediacodec_hwaccel_deps="mediacodec"
2724 mpeg2_mmal_hwaccel_deps="mmal"
2725 mpeg2_nvdec_hwaccel_deps="nvdec"
2726 mpeg2_nvdec_hwaccel_select="mpeg2video_decoder"
2727 mpeg2_qsv_hwaccel_deps="libmfx"
2728 mpeg2_vaapi_hwaccel_deps="vaapi"
2729 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2730 mpeg2_vdpau_hwaccel_deps="vdpau"
2731 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2732 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2733 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2734 mpeg2_xvmc_hwaccel_deps="xvmc"
2735 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2736 mpeg4_cuvid_hwaccel_select="mpeg4_cuvid_decoder"
2737 mpeg4_mediacodec_hwaccel_deps="mediacodec"
2738 mpeg4_mmal_hwaccel_deps="mmal"
2739 mpeg4_nvdec_hwaccel_deps="nvdec"
2740 mpeg4_nvdec_hwaccel_select="mpeg4_decoder"
2741 mpeg4_vaapi_hwaccel_deps="vaapi"
2742 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2743 mpeg4_vdpau_hwaccel_deps="vdpau"
2744 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2745 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2746 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2747 vc1_cuvid_hwaccel_select="vc1_cuvid_decoder"
2748 vc1_d3d11va_hwaccel_deps="d3d11va"
2749 vc1_d3d11va_hwaccel_select="vc1_decoder"
2750 vc1_d3d11va2_hwaccel_deps="d3d11va"
2751 vc1_d3d11va2_hwaccel_select="vc1_decoder"
2752 vc1_dxva2_hwaccel_deps="dxva2"
2753 vc1_dxva2_hwaccel_select="vc1_decoder"
2754 vc1_mmal_hwaccel_deps="mmal"
2755 vc1_nvdec_hwaccel_deps="nvdec"
2756 vc1_nvdec_hwaccel_select="vc1_decoder"
2757 vc1_qsv_hwaccel_deps="libmfx"
2758 vc1_vaapi_hwaccel_deps="vaapi"
2759 vc1_vaapi_hwaccel_select="vc1_decoder"
2760 vc1_vdpau_hwaccel_deps="vdpau"
2761 vc1_vdpau_hwaccel_select="vc1_decoder"
2762 vp8_cuvid_hwaccel_select="vp8_cuvid_decoder"
2763 vp9_cuvid_hwaccel_select="vp9_cuvid_decoder"
2764 vp8_mediacodec_hwaccel_deps="mediacodec"
2765 vp8_qsv_hwaccel_deps="libmfx"
2766 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2767 vp9_d3d11va_hwaccel_select="vp9_decoder"
2768 vp9_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2769 vp9_d3d11va2_hwaccel_select="vp9_decoder"
2770 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
2771 vp9_dxva2_hwaccel_select="vp9_decoder"
2772 vp9_mediacodec_hwaccel_deps="mediacodec"
2773 vp9_nvdec_hwaccel_deps="nvdec"
2774 vp9_nvdec_hwaccel_select="vp9_decoder"
2775 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9_bit_depth"
2776 vp9_vaapi_hwaccel_select="vp9_decoder"
2777 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2778 wmv3_d3d11va2_hwaccel_select="vc1_d3d11va2_hwaccel"
2779 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2780 wmv3_nvdec_hwaccel_select="vc1_nvdec_hwaccel"
2781 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2782 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2783
2784 # hardware-accelerated codecs
2785 omx_deps="libdl pthreads"
2786 omx_rpi_select="omx"
2787 qsv_deps="libmfx"
2788 qsvdec_select="qsv"
2789 qsvenc_select="qsv"
2790 qsvvpp_select="qsv"
2791 vaapi_encode_deps="vaapi"
2792 v4l2_m2m_deps_any="linux_videodev2_h"
2793
2794 hwupload_cuda_filter_deps="cuda"
2795 scale_npp_filter_deps="cuda libnpp"
2796 scale_cuda_filter_deps="cuda_sdk"
2797 thumbnail_cuda_filter_deps="cuda_sdk"
2798
2799 nvenc_deps="cuda"
2800 nvenc_deps_any="libdl LoadLibrary"
2801 nvenc_encoder_deps="nvenc"
2802
2803 h263_v4l2m2m_decoder_deps="v4l2_m2m h263_v4l2_m2m"
2804 h263_v4l2m2m_encoder_deps="v4l2_m2m h263_v4l2_m2m"
2805 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2806 h264_cuvid_decoder_deps="cuvid"
2807 h264_cuvid_decoder_select="h264_mp4toannexb_bsf"
2808 h264_mediacodec_decoder_deps="mediacodec"
2809 h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
2810 h264_mmal_decoder_deps="mmal"
2811 h264_nvenc_encoder_deps="nvenc"
2812 h264_omx_encoder_deps="omx"
2813 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2814 h264_qsv_encoder_select="qsvenc"
2815 h264_rkmpp_decoder_deps="rkmpp"
2816 h264_rkmpp_decoder_select="h264_mp4toannexb_bsf"
2817 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2818 h264_vaapi_encoder_select="cbs_h264 vaapi_encode"
2819 h264_v4l2m2m_decoder_deps="v4l2_m2m h264_v4l2_m2m"
2820 h264_v4l2m2m_encoder_deps="v4l2_m2m h264_v4l2_m2m"
2821 hevc_cuvid_decoder_deps="cuvid"
2822 hevc_cuvid_decoder_select="hevc_mp4toannexb_bsf"
2823 hevc_mediacodec_decoder_deps="mediacodec"
2824 hevc_mediacodec_decoder_select="hevc_mp4toannexb_bsf hevc_parser"
2825 hevc_nvenc_encoder_deps="nvenc"
2826 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec hevc_qsv_hwaccel"
2827 hevc_qsv_encoder_select="hevcparse qsvenc"
2828 hevc_rkmpp_decoder_deps="rkmpp"
2829 hevc_rkmpp_decoder_select="hevc_mp4toannexb_bsf"
2830 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2831 hevc_vaapi_encoder_select="cbs_h265 vaapi_encode"
2832 hevc_v4l2m2m_decoder_deps="v4l2_m2m hevc_v4l2_m2m"
2833 hevc_v4l2m2m_encoder_deps="v4l2_m2m hevc_v4l2_m2m"
2834 mjpeg_cuvid_decoder_deps="cuvid"
2835 mjpeg_qsv_encoder_deps="libmfx"
2836 mjpeg_qsv_encoder_select="qsvenc"
2837 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2838 mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
2839 mpeg1_cuvid_decoder_deps="cuvid"
2840 mpeg1_v4l2m2m_decoder_deps="v4l2_m2m mpeg1_v4l2_m2m"
2841 mpeg2_crystalhd_decoder_select="crystalhd"
2842 mpeg2_cuvid_decoder_deps="cuvid"
2843 mpeg2_mmal_decoder_deps="mmal"
2844 mpeg2_mediacodec_decoder_deps="mediacodec"
2845 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel"
2846 mpeg2_qsv_encoder_select="qsvenc"
2847 mpeg2_vaapi_encoder_deps="VAEncPictureParameterBufferMPEG2"
2848 mpeg2_vaapi_encoder_select="cbs_mpeg2 vaapi_encode"
2849 mpeg2_v4l2m2m_decoder_deps="v4l2_m2m mpeg2_v4l2_m2m"
2850 mpeg4_crystalhd_decoder_select="crystalhd"
2851 mpeg4_cuvid_decoder_deps="cuvid"
2852 mpeg4_mediacodec_decoder_deps="mediacodec"
2853 mpeg4_mmal_decoder_deps="mmal"
2854 mpeg4_omx_encoder_deps="omx"
2855 mpeg4_v4l2m2m_decoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
2856 mpeg4_v4l2m2m_encoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
2857 msmpeg4_crystalhd_decoder_select="crystalhd"
2858 nvenc_h264_encoder_select="h264_nvenc_encoder"
2859 nvenc_hevc_encoder_select="hevc_nvenc_encoder"
2860 vc1_crystalhd_decoder_select="crystalhd"
2861 vc1_cuvid_decoder_deps="cuvid"
2862 vc1_mmal_decoder_deps="mmal"
2863 vc1_qsv_decoder_select="qsvdec vc1_qsv_hwaccel vc1_parser"
2864 vc1_v4l2m2m_decoder_deps="v4l2_m2m vc1_v4l2_m2m"
2865 vp8_cuvid_decoder_deps="cuvid"
2866 vp8_mediacodec_decoder_deps="mediacodec"
2867 vp8_qsv_decoder_select="qsvdec vp8_qsv_hwaccel vp8_parser"
2868 vp8_rkmpp_decoder_deps="rkmpp"
2869 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
2870 vp8_vaapi_encoder_select="vaapi_encode"
2871 vp8_v4l2m2m_decoder_deps="v4l2_m2m vp8_v4l2_m2m"
2872 vp8_v4l2m2m_encoder_deps="v4l2_m2m vp8_v4l2_m2m"
2873 vp9_cuvid_decoder_deps="cuvid"
2874 vp9_mediacodec_decoder_deps="mediacodec"
2875 vp9_rkmpp_decoder_deps="rkmpp"
2876 vp9_vaapi_encoder_deps="VAEncPictureParameterBufferVP9"
2877 vp9_vaapi_encoder_select="vaapi_encode"
2878 vp9_v4l2m2m_decoder_deps="v4l2_m2m vp9_v4l2_m2m"
2879 wmv3_crystalhd_decoder_select="crystalhd"
2880
2881 # parsers
2882 aac_parser_select="adts_header"
2883 h264_parser_select="golomb h264dsp h264parse"
2884 hevc_parser_select="hevcparse"
2885 mpegaudio_parser_select="mpegaudioheader"
2886 mpegvideo_parser_select="mpegvideo"
2887 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
2888 vc1_parser_select="vc1dsp"
2889
2890 # bitstream_filters
2891 aac_adtstoasc_bsf_select="adts_header"
2892 h264_metadata_bsf_select="cbs_h264"
2893 h264_redundant_pps_bsf_select="cbs_h264"
2894 hevc_metadata_bsf_select="cbs_h265"
2895 mjpeg2jpeg_bsf_select="jpegtables"
2896 mpeg2_metadata_bsf_select="cbs_mpeg2"
2897 trace_headers_bsf_select="cbs_h264 cbs_h265 cbs_mpeg2"
2898
2899 # external libraries
2900 aac_at_decoder_deps="audiotoolbox"
2901 ac3_at_decoder_deps="audiotoolbox"
2902 ac3_at_decoder_select="ac3_parser"
2903 adpcm_ima_qt_at_decoder_deps="audiotoolbox"
2904 alac_at_decoder_deps="audiotoolbox"
2905 amr_nb_at_decoder_deps="audiotoolbox"
2906 avisynth_deps_any="libdl LoadLibrary"
2907 avisynth_demuxer_deps="avisynth"
2908 avisynth_demuxer_select="riffdec"
2909 eac3_at_decoder_deps="audiotoolbox"
2910 eac3_at_decoder_select="ac3_parser"
2911 gsm_ms_at_decoder_deps="audiotoolbox"
2912 ilbc_at_decoder_deps="audiotoolbox"
2913 mp1_at_decoder_deps="audiotoolbox"
2914 mp2_at_decoder_deps="audiotoolbox"
2915 mp3_at_decoder_deps="audiotoolbox"
2916 mp1_at_decoder_select="mpegaudioheader"
2917 mp2_at_decoder_select="mpegaudioheader"
2918 mp3_at_decoder_select="mpegaudioheader"
2919 pcm_alaw_at_decoder_deps="audiotoolbox"
2920 pcm_mulaw_at_decoder_deps="audiotoolbox"
2921 qdmc_at_decoder_deps="audiotoolbox"
2922 qdm2_at_decoder_deps="audiotoolbox"
2923 aac_at_encoder_deps="audiotoolbox"
2924 aac_at_encoder_select="audio_frame_queue"
2925 alac_at_encoder_deps="audiotoolbox"
2926 alac_at_encoder_select="audio_frame_queue"
2927 ilbc_at_encoder_deps="audiotoolbox"
2928 ilbc_at_encoder_select="audio_frame_queue"
2929 pcm_alaw_at_encoder_deps="audiotoolbox"
2930 pcm_alaw_at_encoder_select="audio_frame_queue"
2931 pcm_mulaw_at_encoder_deps="audiotoolbox"
2932 pcm_mulaw_at_encoder_select="audio_frame_queue"
2933 chromaprint_muxer_deps="chromaprint"
2934 h264_videotoolbox_encoder_deps="pthreads"
2935 h264_videotoolbox_encoder_select="videotoolbox_encoder"
2936 hevc_videotoolbox_encoder_deps="pthreads"
2937 hevc_videotoolbox_encoder_select="videotoolbox_encoder"
2938 libcelt_decoder_deps="libcelt"
2939 libfdk_aac_decoder_deps="libfdk_aac"
2940 libfdk_aac_encoder_deps="libfdk_aac"
2941 libfdk_aac_encoder_select="audio_frame_queue"
2942 libgme_demuxer_deps="libgme"
2943 libgsm_decoder_deps="libgsm"
2944 libgsm_encoder_deps="libgsm"
2945 libgsm_ms_decoder_deps="libgsm"
2946 libgsm_ms_encoder_deps="libgsm"
2947 libilbc_decoder_deps="libilbc"
2948 libilbc_encoder_deps="libilbc"
2949 libkvazaar_encoder_deps="libkvazaar"
2950 libmodplug_demuxer_deps="libmodplug"
2951 libmp3lame_encoder_deps="libmp3lame"
2952 libmp3lame_encoder_select="audio_frame_queue mpegaudioheader"
2953 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2954 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2955 libopencore_amrnb_encoder_select="audio_frame_queue"
2956 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2957 libopenh264_decoder_deps="libopenh264"
2958 libopenh264_decoder_select="h264_mp4toannexb_bsf"
2959 libopenh264_encoder_deps="libopenh264"
2960 libopenjpeg_decoder_deps="libopenjpeg"
2961 libopenjpeg_encoder_deps="libopenjpeg"
2962 libopenmpt_demuxer_deps="libopenmpt"
2963 libopus_decoder_deps="libopus"
2964 libopus_encoder_deps="libopus"
2965 libopus_encoder_select="audio_frame_queue"
2966 librsvg_decoder_deps="librsvg"
2967 libshine_encoder_deps="libshine"
2968 libshine_encoder_select="audio_frame_queue"
2969 libspeex_decoder_deps="libspeex"
2970 libspeex_encoder_deps="libspeex"
2971 libspeex_encoder_select="audio_frame_queue"
2972 libtheora_encoder_deps="libtheora"
2973 libtwolame_encoder_deps="libtwolame"
2974 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2975 libvorbis_decoder_deps="libvorbis"
2976 libvorbis_encoder_deps="libvorbis libvorbisenc"
2977 libvorbis_encoder_select="audio_frame_queue"
2978 libvpx_vp8_decoder_deps="libvpx"
2979 libvpx_vp8_encoder_deps="libvpx"
2980 libvpx_vp9_decoder_deps="libvpx"
2981 libvpx_vp9_encoder_deps="libvpx"
2982 libwavpack_encoder_deps="libwavpack"
2983 libwavpack_encoder_select="audio_frame_queue"
2984 libwebp_encoder_deps="libwebp"
2985 libwebp_anim_encoder_deps="libwebp"
2986 libx262_encoder_deps="libx262"
2987 libx264_encoder_deps="libx264"
2988 libx264rgb_encoder_deps="libx264 x264_csp_bgr"
2989 libx264rgb_encoder_select="libx264_encoder"
2990 libx265_encoder_deps="libx265"
2991 libxavs_encoder_deps="libxavs"
2992 libxvid_encoder_deps="libxvid"
2993 libzvbi_teletext_decoder_deps="libzvbi"
2994 videotoolbox_suggest="coreservices"
2995 videotoolbox_deps="corefoundation coremedia corevideo"
2996 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
2997
2998 # demuxers / muxers
2999 ac3_demuxer_select="ac3_parser"
3000 aiff_muxer_select="iso_media"
3001 asf_demuxer_select="riffdec"
3002 asf_o_demuxer_select="riffdec"
3003 asf_muxer_select="riffenc"
3004 asf_stream_muxer_select="asf_muxer"
3005 avi_demuxer_select="iso_media riffdec exif"
3006 avi_muxer_select="riffenc"
3007 caf_demuxer_select="iso_media riffdec"
3008 caf_muxer_select="iso_media"
3009 dash_muxer_select="mp4_muxer"
3010 dash_demuxer_deps="libxml2"
3011 dirac_demuxer_select="dirac_parser"
3012 dts_demuxer_select="dca_parser"
3013 dtshd_demuxer_select="dca_parser"
3014 dv_demuxer_select="dvprofile"
3015 dv_muxer_select="dvprofile"
3016 dxa_demuxer_select="riffdec"
3017 eac3_demuxer_select="ac3_parser"
3018 f4v_muxer_select="mov_muxer"
3019 fifo_muxer_deps="threads"
3020 flac_demuxer_select="flac_parser"
3021 hds_muxer_select="flv_muxer"
3022 hls_muxer_select="mpegts_muxer"
3023 hls_muxer_suggest="gcrypt openssl"
3024 image2_alias_pix_demuxer_select="image2_demuxer"
3025 image2_brender_pix_demuxer_select="image2_demuxer"
3026 ipod_muxer_select="mov_muxer"
3027 ismv_muxer_select="mov_muxer"
3028 matroska_audio_muxer_select="matroska_muxer"
3029 matroska_demuxer_select="iso_media riffdec"
3030 matroska_demuxer_suggest="bzlib lzo zlib"
3031 matroska_muxer_select="iso_media riffenc"
3032 mmf_muxer_select="riffenc"
3033 mov_demuxer_select="iso_media riffdec"
3034 mov_demuxer_suggest="zlib"
3035 mov_muxer_select="iso_media riffenc rtpenc_chain"
3036 mp3_demuxer_select="mpegaudio_parser"
3037 mp3_muxer_select="mpegaudioheader"
3038 mp4_muxer_select="mov_muxer"
3039 mpegts_demuxer_select="iso_media"
3040 mpegts_muxer_select="adts_muxer latm_muxer"
3041 mpegtsraw_demuxer_select="mpegts_demuxer"
3042 mxf_d10_muxer_select="mxf_muxer"
3043 mxf_opatom_muxer_select="mxf_muxer"
3044 nut_muxer_select="riffenc"
3045 nuv_demuxer_select="riffdec"
3046 oga_muxer_select="ogg_muxer"
3047 ogg_demuxer_select="dirac_parse"
3048 ogv_muxer_select="ogg_muxer"
3049 opus_muxer_select="ogg_muxer"
3050 psp_muxer_select="mov_muxer"
3051 rtp_demuxer_select="sdp_demuxer"
3052 rtp_muxer_select="golomb"
3053 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
3054 rtsp_demuxer_select="http_protocol rtpdec"
3055 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
3056 sap_demuxer_select="sdp_demuxer"
3057 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
3058 sdp_demuxer_select="rtpdec"
3059 smoothstreaming_muxer_select="ismv_muxer"
3060 spdif_demuxer_select="adts_header"
3061 spdif_muxer_select="adts_header"
3062 spx_muxer_select="ogg_muxer"
3063 swf_demuxer_suggest="zlib"
3064 tak_demuxer_select="tak_parser"
3065 tg2_muxer_select="mov_muxer"
3066 tgp_muxer_select="mov_muxer"
3067 vobsub_demuxer_select="mpegps_demuxer"
3068 w64_demuxer_select="wav_demuxer"
3069 w64_muxer_select="wav_muxer"
3070 wav_demuxer_select="riffdec"
3071 wav_muxer_select="riffenc"
3072 webm_muxer_select="iso_media riffenc"
3073 webm_dash_manifest_demuxer_select="matroska_demuxer"
3074 wtv_demuxer_select="mpegts_demuxer riffdec"
3075 wtv_muxer_select="mpegts_muxer riffenc"
3076 xmv_demuxer_select="riffdec"
3077 xwma_demuxer_select="riffdec"
3078
3079 # indevs / outdevs
3080 alsa_indev_deps="alsa"
3081 alsa_outdev_deps="alsa"
3082 avfoundation_indev_deps="avfoundation corevideo coremedia pthreads"
3083 avfoundation_indev_suggest="coregraphics applicationservices"
3084 avfoundation_indev_extralibs="-framework Foundation"
3085 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
3086 caca_outdev_deps="libcaca"
3087 decklink_deps_any="libdl LoadLibrary"
3088 decklink_indev_deps="decklink threads"
3089 decklink_indev_extralibs="-lstdc++"
3090 decklink_outdev_deps="decklink threads"
3091 decklink_outdev_extralibs="-lstdc++"
3092 libndi_newtek_indev_deps="libndi_newtek"
3093 libndi_newtek_indev_extralibs="-lndi"
3094 libndi_newtek_outdev_deps="libndi_newtek"
3095 libndi_newtek_outdev_extralibs="-lndi"
3096 dshow_indev_deps="IBaseFilter"
3097 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
3098 fbdev_indev_deps="linux_fb_h"
3099 fbdev_outdev_deps="linux_fb_h"
3100 gdigrab_indev_deps="CreateDIBSection"
3101 gdigrab_indev_extralibs="-lgdi32"
3102 gdigrab_indev_select="bmp_decoder"
3103 iec61883_indev_deps="libiec61883"
3104 jack_indev_deps="libjack"
3105 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
3106 kmsgrab_indev_deps="libdrm"
3107 lavfi_indev_deps="avfilter"
3108 libcdio_indev_deps="libcdio"
3109 libdc1394_indev_deps="libdc1394"
3110 openal_indev_deps="openal"
3111 opengl_outdev_deps="opengl"
3112 oss_indev_deps_any="sys_soundcard_h"
3113 oss_outdev_deps_any="sys_soundcard_h"
3114 pulse_indev_deps="libpulse"
3115 pulse_outdev_deps="libpulse"
3116 sdl2_outdev_deps="sdl2"
3117 sndio_indev_deps="sndio"
3118 sndio_outdev_deps="sndio"
3119 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
3120 v4l2_indev_suggest="libv4l2"
3121 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
3122 v4l2_outdev_suggest="libv4l2"
3123 vfwcap_indev_deps="vfw32 vfwcap_defines"
3124 xcbgrab_indev_deps="libxcb"
3125 xcbgrab_indev_suggest="libxcb_shm libxcb_shape libxcb_xfixes"
3126 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
3127 xv_outdev_extralibs="-lXv -lX11 -lXext"
3128
3129 # protocols
3130 async_protocol_deps="threads"
3131 bluray_protocol_deps="libbluray"
3132 ffrtmpcrypt_protocol_conflict="librtmp_protocol"
3133 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
3134 ffrtmpcrypt_protocol_select="tcp_protocol"
3135 ffrtmphttp_protocol_conflict="librtmp_protocol"
3136 ffrtmphttp_protocol_select="http_protocol"
3137 ftp_protocol_select="tcp_protocol"
3138 gopher_protocol_select="network"
3139 http_protocol_select="tcp_protocol"
3140 http_protocol_suggest="zlib"
3141 httpproxy_protocol_select="tcp_protocol"
3142 httpproxy_protocol_suggest="zlib"
3143 https_protocol_select="tls_protocol"
3144 https_protocol_suggest="zlib"
3145 icecast_protocol_select="http_protocol"
3146 librtmp_protocol_deps="librtmp"
3147 librtmpe_protocol_deps="librtmp"
3148 librtmps_protocol_deps="librtmp"
3149 librtmpt_protocol_deps="librtmp"
3150 librtmpte_protocol_deps="librtmp"
3151 libsmbclient_protocol_deps="libsmbclient gplv3"
3152 libssh_protocol_deps="libssh"
3153 mmsh_protocol_select="http_protocol"
3154 mmst_protocol_select="network"
3155 rtmp_protocol_conflict="librtmp_protocol"
3156 rtmp_protocol_select="tcp_protocol"
3157 rtmp_protocol_suggest="zlib"
3158 rtmpe_protocol_select="ffrtmpcrypt_protocol"
3159 rtmpe_protocol_suggest="zlib"
3160 rtmps_protocol_conflict="librtmp_protocol"
3161 rtmps_protocol_select="tls_protocol"
3162 rtmps_protocol_suggest="zlib"
3163 rtmpt_protocol_select="ffrtmphttp_protocol"
3164 rtmpt_protocol_suggest="zlib"
3165 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
3166 rtmpte_protocol_suggest="zlib"
3167 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
3168 rtmpts_protocol_suggest="zlib"
3169 rtp_protocol_select="udp_protocol"
3170 schannel_conflict="openssl gnutls"
3171 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
3172 sctp_protocol_select="network"
3173 securetransport_conflict="openssl gnutls"
3174 srtp_protocol_select="rtp_protocol srtp"
3175 tcp_protocol_select="network"
3176 tls_protocol_deps_any="gnutls openssl schannel securetransport"
3177 tls_protocol_select="tcp_protocol"
3178 udp_protocol_select="network"
3179 udplite_protocol_select="network"
3180 unix_protocol_deps="sys_un_h"
3181 unix_protocol_select="network"
3182
3183 # filters
3184 afftfilt_filter_deps="avcodec"
3185 afftfilt_filter_select="fft"
3186 afir_filter_deps="avcodec"
3187 afir_filter_select="fft"
3188 amovie_filter_deps="avcodec avformat"
3189 aresample_filter_deps="swresample"
3190 ass_filter_deps="libass"
3191 atempo_filter_deps="avcodec"
3192 atempo_filter_select="rdft"
3193 azmq_filter_deps="libzmq"
3194 blackframe_filter_deps="gpl"
3195 boxblur_filter_deps="gpl"
3196 bs2b_filter_deps="libbs2b"
3197 colormatrix_filter_deps="gpl"
3198 coreimage_filter_deps="coreimage appkit"
3199 coreimage_filter_extralibs="-framework OpenGL"
3200 coreimagesrc_filter_deps="coreimage appkit"
3201 coreimagesrc_filter_extralibs="-framework OpenGL"
3202 cover_rect_filter_deps="avcodec avformat gpl"
3203 cropdetect_filter_deps="gpl"
3204 deinterlace_qsv_filter_deps="libmfx"
3205 deinterlace_vaapi_filter_deps="vaapi"
3206 delogo_filter_deps="gpl"
3207 deshake_filter_select="pixelutils"
3208 deshake_filter_suggest="opencl"
3209 drawtext_filter_deps="libfreetype"
3210 drawtext_filter_suggest="libfontconfig libfribidi"
3211 elbg_filter_deps="avcodec"
3212 eq_filter_deps="gpl"
3213 fftfilt_filter_deps="avcodec"
3214 fftfilt_filter_select="rdft"
3215 find_rect_filter_deps="avcodec avformat gpl"
3216 firequalizer_filter_deps="avcodec"
3217 firequalizer_filter_select="rdft"
3218 flite_filter_deps="libflite"
3219 framerate_filter_select="pixelutils"
3220 frei0r_filter_deps="frei0r libdl"
3221 frei0r_src_filter_deps="frei0r libdl"
3222 fspp_filter_deps="gpl"
3223 geq_filter_deps="gpl"
3224 histeq_filter_deps="gpl"
3225 hqdn3d_filter_deps="gpl"
3226 interlace_filter_deps="gpl"
3227 kerndeint_filter_deps="gpl"
3228 ladspa_filter_deps="ladspa libdl"
3229 mcdeint_filter_deps="avcodec gpl"
3230 movie_filter_deps="avcodec avformat"
3231 mpdecimate_filter_deps="gpl"
3232 mpdecimate_filter_select="pixelutils"
3233 mptestsrc_filter_deps="gpl"
3234 negate_filter_deps="lut_filter"
3235 nnedi_filter_deps="gpl"
3236 ocr_filter_deps="libtesseract"
3237 ocv_filter_deps="libopencv"
3238 overlay_qsv_filter_deps="libmfx"
3239 overlay_qsv_filter_select="qsvvpp"
3240 owdenoise_filter_deps="gpl"
3241 pan_filter_deps="swresample"
3242 perspective_filter_deps="gpl"
3243 phase_filter_deps="gpl"
3244 pp7_filter_deps="gpl"
3245 pp_filter_deps="gpl postproc"
3246 pullup_filter_deps="gpl"
3247 removelogo_filter_deps="avcodec avformat swscale"
3248 repeatfields_filter_deps="gpl"
3249 resample_filter_deps="avresample"
3250 rubberband_filter_deps="librubberband"
3251 sab_filter_deps="gpl swscale"
3252 scale2ref_filter_deps="swscale"
3253 scale_filter_deps="swscale"
3254 scale_qsv_filter_deps="libmfx"
3255 select_filter_select="pixelutils"
3256 showcqt_filter_deps="avcodec avformat swscale"
3257 showcqt_filter_suggest="libfontconfig libfreetype"
3258 showcqt_filter_select="fft"
3259 showfreqs_filter_deps="avcodec"
3260 showfreqs_filter_select="fft"
3261 showspectrum_filter_deps="avcodec"
3262 showspectrum_filter_select="fft"
3263 showspectrumpic_filter_deps="avcodec"
3264 showspectrumpic_filter_select="fft"
3265 signature_filter_deps="gpl avcodec avformat"
3266 smartblur_filter_deps="gpl swscale"
3267 sofalizer_filter_deps="libmysofa avcodec"
3268 sofalizer_filter_select="fft"
3269 spectrumsynth_filter_deps="avcodec"
3270 spectrumsynth_filter_select="fft"
3271 spp_filter_deps="gpl avcodec"
3272 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3273 stereo3d_filter_deps="gpl"
3274 subtitles_filter_deps="avformat avcodec libass"
3275 super2xsai_filter_deps="gpl"
3276 pixfmts_super2xsai_test_deps="super2xsai_filter"
3277 tinterlace_filter_deps="gpl"
3278 tinterlace_merge_test_deps="tinterlace_filter"
3279 tinterlace_pad_test_deps="tinterlace_filter"
3280 tonemap_filter_deps="const_nan"
3281 uspp_filter_deps="gpl avcodec"
3282 unsharp_filter_suggest="opencl"
3283 vaguedenoiser_filter_deps="gpl"
3284 vidstabdetect_filter_deps="libvidstab"
3285 vidstabtransform_filter_deps="libvidstab"
3286 libvmaf_filter_deps="libvmaf"
3287 zmq_filter_deps="libzmq"
3288 zoompan_filter_deps="swscale"
3289 zscale_filter_deps="libzimg const_nan"
3290 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3291 vpp_qsv_filter_deps="libmfx"
3292 vpp_qsv_filter_select="qsvvpp"
3293
3294 # examples
3295 avio_dir_cmd_deps="avformat avutil"
3296 avio_reading_deps="avformat avcodec avutil"
3297 decode_audio_example_deps="avcodec avutil"
3298 decode_video_example_deps="avcodec avutil"
3299 demuxing_decoding_example_deps="avcodec avformat avutil"
3300 encode_audio_example_deps="avcodec avutil"
3301 encode_video_example_deps="avcodec avutil"
3302 extract_mvs_example_deps="avcodec avformat avutil"
3303 filter_audio_example_deps="avfilter avutil"
3304 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3305 filtering_video_example_deps="avfilter avcodec avformat avutil"
3306 http_multiclient_example_deps="avformat avutil fork"
3307 hw_decode_example_deps="avcodec avformat avutil"
3308 metadata_example_deps="avformat avutil"
3309 muxing_example_deps="avcodec avformat avutil swscale"
3310 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
3311 remuxing_example_deps="avcodec avformat avutil"
3312 resampling_audio_example_deps="avutil swresample"
3313 scaling_video_example_deps="avutil swscale"
3314 transcode_aac_example_deps="avcodec avformat swresample"
3315 transcoding_example_deps="avfilter avcodec avformat avutil"
3316
3317 # EXTRALIBS_LIST
3318 cpu_init_extralibs="pthreads_extralibs"
3319 cws2fws_extralibs="zlib_extralibs"
3320
3321 # libraries, in linking order
3322 avcodec_deps="avutil"
3323 avcodec_suggest="libm"
3324 avcodec_select="null_bsf"
3325 avdevice_deps="avformat avcodec avutil"
3326 avdevice_suggest="libm"
3327 avfilter_deps="avutil"
3328 avfilter_suggest="libm"
3329 avformat_deps="avcodec avutil"
3330 avformat_suggest="libm network zlib"
3331 avresample_deps="avutil"
3332 avresample_suggest="libm"
3333 avutil_suggest="clock_gettime cuda libm libdrm libmfx opencl user32 vaapi videotoolbox corefoundation corevideo coremedia wincrypt"
3334 postproc_deps="avutil gpl"
3335 postproc_suggest="libm"
3336 swresample_deps="avutil"
3337 swresample_suggest="libm libsoxr"
3338 swscale_deps="avutil"
3339 swscale_suggest="libm"
3340
3341 avcodec_extralibs="pthreads_extralibs iconv_extralibs"
3342 avfilter_extralibs="pthreads_extralibs"
3343 avutil_extralibs="d3d11va_extralibs nanosleep_extralibs pthreads_extralibs vaapi_drm_extralibs vaapi_x11_extralibs vdpau_x11_extralibs"
3344
3345 # programs
3346 ffmpeg_deps="avcodec avfilter avformat swresample"
3347 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3348                null_filter
3349                trim_filter"
3350 ffmpeg_suggest="ole32 psapi shell32"
3351 ffplay_deps="avcodec avformat swscale swresample sdl2"
3352 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3353 ffplay_suggest="shell32"
3354 ffprobe_deps="avcodec avformat"
3355 ffprobe_suggest="shell32"
3356 ffserver_deps="avformat fork sarestart"
3357 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
3358
3359 # documentation
3360 podpages_deps="perl"
3361 manpages_deps="perl pod2man"
3362 htmlpages_deps="perl"
3363 htmlpages_deps_any="makeinfo_html texi2html"
3364 txtpages_deps="perl makeinfo"
3365 doc_deps_any="manpages htmlpages podpages txtpages"
3366
3367 # default parameters
3368
3369 logfile="ffbuild/config.log"
3370
3371 # installation paths
3372 prefix_default="/usr/local"
3373 bindir_default='${prefix}/bin'
3374 datadir_default='${prefix}/share/ffmpeg'
3375 docdir_default='${prefix}/share/doc/ffmpeg'
3376 incdir_default='${prefix}/include'
3377 libdir_default='${prefix}/lib'
3378 mandir_default='${prefix}/share/man'
3379
3380 # toolchain
3381 ar_default="ar"
3382 cc_default="gcc"
3383 cxx_default="g++"
3384 host_cc_default="gcc"
3385 doxygen_default="doxygen"
3386 install="install"
3387 ln_s_default="ln -s -f"
3388 nm_default="nm -g"
3389 pkg_config_default=pkg-config
3390 ranlib_default="ranlib"
3391 strip_default="strip"
3392 version_script='--version-script'
3393 objformat="elf32"
3394 x86asmexe_default="nasm"
3395 windres_default="windres"
3396 nvcc_default="nvcc"
3397 nvccflags_default="-gencode arch=compute_30,code=sm_30 -O2"
3398 striptype="direct"
3399
3400 # OS
3401 target_os_default=$(tolower $(uname -s))
3402 host_os=$target_os_default
3403
3404 # machine
3405 if test "$target_os_default" = aix; then
3406     arch_default=$(uname -p)
3407     strip_default="strip -X32_64"
3408 else
3409     arch_default=$(uname -m)
3410 fi
3411 cpu="generic"
3412 intrinsics="none"
3413
3414 # configurable options
3415 enable $PROGRAM_LIST
3416 enable $DOCUMENT_LIST
3417 enable $EXAMPLE_LIST
3418 enable $(filter_out avresample $LIBRARY_LIST)
3419 enable stripping
3420
3421 enable asm
3422 enable debug
3423 enable doc
3424 enable faan faandct faanidct
3425 enable optimizations
3426 enable runtime_cpudetect
3427 enable safe_bitstream_reader
3428 enable static
3429 enable swscale_alpha
3430 enable valgrind_backtrace
3431
3432 sws_max_filter_size_default=256
3433 set_default sws_max_filter_size
3434
3435 # internal components are enabled by default
3436 enable $EXTRALIBS_LIST
3437
3438 # Avoid external, non-system, libraries getting enabled by dependency resolution
3439 disable $EXTERNAL_LIBRARY_LIST $HWACCEL_LIBRARY_LIST
3440
3441 # build settings
3442 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3443 LIBPREF="lib"
3444 LIBSUF=".a"
3445 FULLNAME='$(NAME)$(BUILDSUF)'
3446 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3447 SLIBPREF="lib"
3448 SLIBSUF=".so"
3449 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3450 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3451 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3452 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3453 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3454 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3455 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
3456
3457 asflags_filter=echo
3458 cflags_filter=echo
3459 ldflags_filter=echo
3460
3461 AS_C='-c'
3462 AS_O='-o $@'
3463 CC_C='-c'
3464 CC_E='-E -o $@'
3465 CC_O='-o $@'
3466 CXX_C='-c'
3467 CXX_O='-o $@'
3468 OBJCC_C='-c'
3469 OBJCC_E='-E -o $@'
3470 OBJCC_O='-o $@'
3471 X86ASM_O='-o $@'
3472 LD_O='-o $@'
3473 LD_LIB='-l%'
3474 LD_PATH='-L'
3475 HOSTCC_C='-c'
3476 HOSTCC_E='-E -o $@'
3477 HOSTCC_O='-o $@'
3478 HOSTLD_O='-o $@'
3479 NVCC_C='-c'
3480 NVCC_O='-o $@'
3481
3482 host_extralibs='-lm'
3483 host_cflags_filter=echo
3484 host_ldflags_filter=echo
3485
3486 target_path='$(CURDIR)'
3487
3488 # since the object filename is not given with the -MM flag, the compiler
3489 # is only able to print the basename, and we must add the path ourselves
3490 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3491 DEPFLAGS='-MM'
3492
3493 mkdir -p ffbuild
3494
3495 # find source path
3496 if test -f configure; then
3497     source_path=.
3498 else
3499     source_path=$(cd $(dirname "$0"); pwd)
3500     case "$source_path" in
3501         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3502     esac
3503     test -e "$source_path/config.h" &&
3504         die "Out of tree builds are impossible with config.h in source dir."
3505 fi
3506
3507 for v in "$@"; do
3508     r=${v#*=}
3509     l=${v%"$r"}
3510     r=$(sh_quote "$r")
3511     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3512 done
3513
3514 find_things(){
3515     thing=$1
3516     pattern=$2
3517     file=$source_path/$3
3518     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
3519 }
3520
3521 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
3522 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
3523 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
3524 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
3525 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
3526 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
3527 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
3528 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
3529 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
3530
3531 find_things_extern(){
3532     thing=$1
3533     pattern=$2
3534     file=$source_path/$3
3535     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
3536 }
3537
3538 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3539 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3540
3541 AVCODEC_COMPONENTS_LIST="
3542     $BSF_LIST
3543     $DECODER_LIST
3544     $ENCODER_LIST
3545     $HWACCEL_LIST
3546     $PARSER_LIST
3547 "
3548
3549 AVDEVICE_COMPONENTS_LIST="
3550     $INDEV_LIST
3551     $OUTDEV_LIST
3552 "
3553
3554 AVFILTER_COMPONENTS_LIST="
3555     $FILTER_LIST
3556 "
3557
3558 AVFORMAT_COMPONENTS_LIST="
3559     $DEMUXER_LIST
3560     $MUXER_LIST
3561     $PROTOCOL_LIST
3562 "
3563
3564 ALL_COMPONENTS="
3565     $AVCODEC_COMPONENTS_LIST
3566     $AVDEVICE_COMPONENTS_LIST
3567     $AVFILTER_COMPONENTS_LIST
3568     $AVFORMAT_COMPONENTS_LIST
3569 "
3570
3571 for n in $COMPONENT_LIST; do
3572     v=$(toupper ${n%s})_LIST
3573     eval enable \$$v
3574     eval ${n}_if_any="\$$v"
3575 done
3576
3577 enable $ARCH_EXT_LIST
3578
3579 die_unknown(){
3580     echo "Unknown option \"$1\"."
3581     echo "See $0 --help for available options."
3582     exit 1
3583 }
3584
3585 print_in_columns() {
3586     cols=$(expr $ncols / 24)
3587     cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
3588 }
3589
3590 show_list() {
3591     suffix=_$1
3592     shift
3593     echo $* | sed s/$suffix//g | print_in_columns
3594     exit 0
3595 }
3596
3597 rand_list(){
3598     IFS=', '
3599     set -- $*
3600     unset IFS
3601     for thing; do
3602         comp=${thing%:*}
3603         prob=${thing#$comp}
3604         prob=${prob#:}
3605         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3606         echo "prob ${prob:-0.5}"
3607         printf '%s\n' $comp
3608     done
3609 }
3610
3611 do_random(){
3612     action=$1
3613     shift
3614     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3615     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3616 }
3617
3618 for opt do
3619     optval="${opt#*=}"
3620     case "$opt" in
3621         --extra-ldflags=*)
3622             add_ldflags $optval
3623         ;;
3624         --extra-ldexeflags=*)
3625             add_ldexeflags $optval
3626         ;;
3627         --extra-ldsoflags=*)
3628             add_ldsoflags $optval
3629         ;;
3630         --extra-ldlibflags=*)
3631             warn "The --extra-ldlibflags option is only provided for compatibility and will be\n"\
3632                  "removed in the future. Use --extra-ldsoflags instead."
3633             add_ldsoflags $optval
3634         ;;
3635         --extra-libs=*)
3636             add_extralibs $optval
3637         ;;
3638         --disable-devices)
3639             disable $INDEV_LIST $OUTDEV_LIST
3640         ;;
3641         --enable-debug=*)
3642             debuglevel="$optval"
3643         ;;
3644         --disable-programs)
3645             disable $PROGRAM_LIST
3646         ;;
3647         --disable-everything)
3648             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3649         ;;
3650         --disable-all)
3651             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3652             disable $LIBRARY_LIST $PROGRAM_LIST doc
3653             enable avutil
3654         ;;
3655         --enable-random|--disable-random)
3656             action=${opt%%-random}
3657             do_random ${action#--} $COMPONENT_LIST
3658         ;;
3659         --enable-random=*|--disable-random=*)
3660             action=${opt%%-random=*}
3661             do_random ${action#--} $optval
3662         ;;
3663         --enable-sdl)
3664             enable sdl2
3665         ;;
3666         --enable-*=*|--disable-*=*)
3667             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3668             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3669             eval list=\$$(toupper $thing)_LIST
3670             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3671             list=$(filter "$name" $list)
3672             [ "$list" = "" ] && warn "Option $opt did not match anything"
3673             $action $list
3674         ;;
3675         --enable-yasm|--disable-yasm)
3676             warn "The ${opt} option is only provided for compatibility and will be\n"\
3677                  "removed in the future. Use --enable-x86asm / --disable-x86asm instead."
3678             test $opt = --enable-yasm && x86asm=yes || x86asm=no
3679         ;;
3680         --yasmexe=*)
3681             warn "The --yasmexe option is only provided for compatibility and will be\n"\
3682                  "removed in the future. Use --x86asmexe instead."
3683             x86asmexe="$optval"
3684         ;;
3685         --enable-?*|--disable-?*)
3686             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3687             if is_in $option $COMPONENT_LIST; then
3688                 test $action = disable && action=unset
3689                 eval $action \$$(toupper ${option%s})_LIST
3690             elif is_in $option $CMDLINE_SELECT; then
3691                 $action $option
3692             else
3693                 die_unknown $opt
3694             fi
3695         ;;
3696         --list-*)
3697             NAME="${opt#--list-}"
3698             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3699             NAME=${NAME%s}
3700             eval show_list $NAME \$$(toupper $NAME)_LIST
3701         ;;
3702         --help|-h) show_help
3703         ;;
3704         --quiet|-q) quiet=yes
3705         ;;
3706         --fatal-warnings) enable fatal_warnings
3707         ;;
3708         --libfuzzer=*)
3709             libfuzzer_path="$optval"
3710         ;;
3711         *)
3712             optname="${opt%%=*}"
3713             optname="${optname#--}"
3714             optname=$(echo "$optname" | sed 's/-/_/g')
3715             if is_in $optname $CMDLINE_SET; then
3716                 eval $optname='$optval'
3717             elif is_in $optname $CMDLINE_APPEND; then
3718                 append $optname "$optval"
3719             else
3720                 die_unknown $opt
3721             fi
3722         ;;
3723     esac
3724 done
3725
3726 for e in $env; do
3727     eval "export $e"
3728 done
3729
3730 if disabled autodetect; then
3731
3732     # Unless iconv is explicitely disabled by the user, we still want to probe
3733     # for the iconv from the libc.
3734     disabled iconv || enable libc_iconv
3735
3736     disable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3737     disable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3738 fi
3739 # Mark specifically enabled, but normally autodetected libraries as requested.
3740 for lib in $AUTODETECT_LIBS; do
3741     enabled $lib && request $lib
3742 done
3743 #TODO: switch to $AUTODETECT_LIBS when $THREADS_LIST is supported the same way
3744 enable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3745 enable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3746
3747 disabled logging && logfile=/dev/null
3748
3749 # command line configuration sanity checks
3750
3751 # we need to build at least one lib type
3752 if ! enabled_any static shared; then
3753     cat <<EOF
3754 At least one library type must be built.
3755 Specify --enable-static to build the static libraries or --enable-shared to
3756 build the shared libraries as well. To only build the shared libraries specify
3757 --disable-static in addition to --enable-shared.
3758 EOF
3759     exit 1
3760 fi
3761
3762 die_license_disabled() {
3763     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
3764 }
3765
3766 die_license_disabled_gpl() {
3767     enabled $1 || { enabled $v && die "$v is incompatible with the gpl and --enable-$1 is not specified."; }
3768 }
3769
3770 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3771 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3772
3773 enabled gpl && map "die_license_disabled_gpl nonfree" $EXTERNAL_LIBRARY_NONFREE_LIST
3774 map "die_license_disabled nonfree" $HWACCEL_LIBRARY_NONFREE_LIST
3775
3776 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3777
3778 enabled_all gnutls openssl &&
3779     die "GnuTLS and OpenSSL must not be enabled at the same time."
3780
3781 # Disable all the library-specific components if the library itself
3782 # is disabled, see AVCODEC_LIST and following _LIST variables.
3783
3784 disable_components(){
3785     disabled ${1} && disable $(
3786         eval components="\$$(toupper ${1})_COMPONENTS"
3787         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
3788     )
3789 }
3790
3791 map 'disable_components $v' $LIBRARY_LIST
3792
3793 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
3794 set >> $logfile
3795
3796 test -n "$valgrind" && toolchain="valgrind-memcheck"
3797
3798 enabled ossfuzz && {
3799     add_cflags  -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp -fno-omit-frame-pointer
3800     add_ldflags -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp
3801 }
3802
3803 case "$toolchain" in
3804     *-asan)
3805         cc_default="${toolchain%-asan}"
3806         add_cflags  -fsanitize=address
3807         add_ldflags -fsanitize=address
3808     ;;
3809     *-msan)
3810         cc_default="${toolchain%-msan}"
3811         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
3812         add_ldflags -fsanitize=memory
3813     ;;
3814     *-tsan)
3815         cc_default="${toolchain%-tsan}"
3816         add_cflags  -fsanitize=thread -fPIE
3817         add_ldflags -fsanitize=thread -pie
3818         case "$toolchain" in
3819             gcc-tsan)
3820                 add_cflags  -fPIC
3821                 add_ldflags -fPIC
3822                 ;;
3823         esac
3824     ;;
3825     *-usan)
3826         cc_default="${toolchain%-usan}"
3827         add_cflags  -fsanitize=undefined
3828         add_ldflags -fsanitize=undefined
3829     ;;
3830     valgrind-*)
3831         target_exec_default="valgrind"
3832         case "$toolchain" in
3833             valgrind-massif)
3834                 target_exec_args="--tool=massif --alloc-fn=av_malloc --alloc-fn=av_mallocz --alloc-fn=av_calloc --alloc-fn=av_fast_padded_malloc --alloc-fn=av_fast_malloc --alloc-fn=av_realloc_f --alloc-fn=av_fast_realloc --alloc-fn=av_realloc"
3835                 ;;
3836             valgrind-memcheck)
3837                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3838                 ;;
3839         esac
3840     ;;
3841     msvc)
3842         # Check whether the current MSVC version needs the C99 converter.
3843         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3844         # support enough of C99 to build ffmpeg. Default to the new
3845         # behaviour if the regexp was unable to match anything, since this
3846         # successfully parses the version number of existing supported
3847         # versions that require the converter (MSVC 2010 and 2012).
3848         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3849         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3850             cc_default="cl"
3851             cxx_default="cl"
3852         else
3853             cc_default="c99wrap cl"
3854             cxx_default="c99wrap cl"
3855         fi
3856         ld_default="$source_path/compat/windows/mslink"
3857         nm_default="dumpbin -symbols"
3858         ar_default="lib"
3859         case "$arch" in
3860         aarch64|arm64)
3861             as_default="armasm64"
3862             ;;
3863         arm*)
3864             as_default="armasm"
3865             ;;
3866         esac
3867         target_os_default="win32"
3868         # Use a relative path for TMPDIR. This makes sure all the
3869         # ffconf temp files are written with a relative path, avoiding
3870         # issues with msys/win32 path conversion for MSVC parameters
3871         # such as -Fo<file> or -out:<file>.
3872         TMPDIR=.
3873     ;;
3874     icl)
3875         cc_default="icl"
3876         ld_default="xilink"
3877         nm_default="dumpbin -symbols"
3878         ar_default="xilib"
3879         target_os_default="win32"
3880         TMPDIR=.
3881     ;;
3882     gcov)
3883         add_cflags  -fprofile-arcs -ftest-coverage
3884         add_ldflags -fprofile-arcs -ftest-coverage
3885     ;;
3886     llvm-cov)
3887         add_cflags -fprofile-arcs -ftest-coverage
3888         add_ldflags --coverage
3889     ;;
3890     hardened)
3891         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3892         add_cflags   -fno-strict-overflow -fstack-protector-all
3893         add_ldflags  -Wl,-z,relro -Wl,-z,now
3894         add_cflags   -fPIE
3895         add_ldexeflags -fPIE -pie
3896     ;;
3897     ?*)
3898         die "Unknown toolchain $toolchain"
3899     ;;
3900 esac
3901
3902 if test -n "$cross_prefix"; then
3903     test -n "$arch" && test -n "$target_os" ||
3904         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
3905     enable cross_compile
3906 fi
3907
3908 ar_default="${cross_prefix}${ar_default}"
3909 cc_default="${cross_prefix}${cc_default}"
3910 cxx_default="${cross_prefix}${cxx_default}"
3911 nm_default="${cross_prefix}${nm_default}"
3912 pkg_config_default="${cross_prefix}${pkg_config_default}"
3913 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
3914     ranlib_default="${cross_prefix}${ranlib_default} -D"
3915 else
3916     ranlib_default="${cross_prefix}${ranlib_default}"
3917 fi
3918 strip_default="${cross_prefix}${strip_default}"
3919 windres_default="${cross_prefix}${windres_default}"
3920
3921 sysinclude_default="${sysroot}/usr/include"
3922
3923 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3924     target_exec target_os x86asmexe nvcc
3925 enabled cross_compile || host_cc_default=$cc
3926 set_default host_cc
3927
3928 pkg_config_fail_message=""
3929 if ! $pkg_config --version >/dev/null 2>&1; then
3930     warn "$pkg_config not found, library detection may fail."
3931     pkg_config=false
3932 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
3933     pkg_config_fail_message="
3934 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
3935 fi
3936
3937 if test $doxygen != $doxygen_default && \
3938   ! $doxygen --version >/dev/null 2>&1; then
3939     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3940 fi
3941
3942 exesuf() {
3943     case $1 in
3944         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3945     esac
3946 }
3947
3948 EXESUF=$(exesuf $target_os)
3949 HOSTEXESUF=$(exesuf $host_os)
3950
3951 # set temporary file name
3952 : ${TMPDIR:=$TEMPDIR}
3953 : ${TMPDIR:=$TMP}
3954 : ${TMPDIR:=/tmp}
3955
3956 if [ -n "$tempprefix" ] ; then
3957     mktemp(){
3958         tmpname="$tempprefix.${HOSTNAME}.${UID}"
3959         echo "$tmpname"
3960         mkdir "$tmpname"
3961     }
3962 elif ! check_cmd mktemp -u XXXXXX; then
3963     # simple replacement for missing mktemp
3964     # NOT SAFE FOR GENERAL USE
3965     mktemp(){
3966         tmpname="${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3967         echo "$tmpname"
3968         mkdir "$tmpname"
3969     }
3970 fi
3971
3972 FFTMPDIR=$(mktemp -d "${TMPDIR}/ffconf.XXXXXXXX" 2> /dev/null) ||
3973     die "Unable to create temporary directory in $TMPDIR."
3974
3975 tmpfile(){
3976     tmp="${FFTMPDIR}/test"$2
3977     (set -C; exec > $tmp) 2> /dev/null ||
3978         die "Unable to create temporary file in $FFTMPDIR."
3979     eval $1=$tmp
3980 }
3981
3982 trap 'rm -rf -- "$FFTMPDIR"' EXIT
3983 trap 'exit 2' INT
3984
3985 tmpfile TMPASM .asm
3986 tmpfile TMPC   .c
3987 tmpfile TMPCPP .cpp
3988 tmpfile TMPE   $EXESUF
3989 tmpfile TMPH   .h
3990 tmpfile TMPM   .m
3991 tmpfile TMPO   .o
3992 tmpfile TMPS   .S
3993 tmpfile TMPSH  .sh
3994 tmpfile TMPV   .ver
3995
3996 unset -f mktemp
3997
3998 chmod +x $TMPE
3999
4000 # make sure we can execute files in $TMPDIR
4001 cat > $TMPSH 2>> $logfile <<EOF
4002 #! /bin/sh
4003 EOF
4004 chmod +x $TMPSH >> $logfile 2>&1
4005 if ! $TMPSH >> $logfile 2>&1; then
4006     cat <<EOF
4007 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
4008 variable to another directory and make sure that it is not mounted noexec.
4009 EOF
4010     die "Sanity test failed."
4011 fi
4012
4013 armasm_flags(){
4014     for flag; do
4015         case $flag in
4016             # Filter out MSVC cl.exe options from cflags that shouldn't
4017             # be passed to gas-preprocessor
4018             -M[TD]*)                                            ;;
4019             *)                  echo $flag                      ;;
4020         esac
4021    done
4022 }
4023
4024 cparser_flags(){
4025     for flag; do
4026         case $flag in
4027             -Wno-switch)             echo -Wno-switch-enum ;;
4028             -Wno-format-zero-length) ;;
4029             -Wdisabled-optimization) ;;
4030             -Wno-pointer-sign)       echo -Wno-other ;;
4031             *)                       echo $flag ;;
4032         esac
4033     done
4034 }
4035
4036 msvc_common_flags(){
4037     for flag; do
4038         case $flag in
4039             # In addition to specifying certain flags under the compiler
4040             # specific filters, they must be specified here as well or else the
4041             # generic catch all at the bottom will print the original flag.
4042             -Wall)                ;;
4043             -Wextra)              ;;
4044             -std=c99)             ;;
4045             # Common flags
4046             -fomit-frame-pointer) ;;
4047             -g)                   echo -Z7 ;;
4048             -fno-math-errno)      ;;
4049             -fno-common)          ;;
4050             -fno-signed-zeros)    ;;
4051             -fPIC)                ;;
4052             -mthumb)              ;;
4053             -march=*)             ;;
4054             -lz)                  echo zlib.lib ;;
4055             -lx264)               echo libx264.lib ;;
4056             -lstdc++)             ;;
4057             -l*)                  echo ${flag#-l}.lib ;;
4058             -LARGEADDRESSAWARE)   echo $flag ;;
4059             -L*)                  echo -libpath:${flag#-L} ;;
4060             *)                    echo $flag ;;
4061         esac
4062     done
4063 }
4064
4065 msvc_flags(){
4066     msvc_common_flags "$@"
4067     for flag; do
4068         case $flag in
4069             -Wall)                echo -W3 -wd4018 -wd4146 -wd4244 -wd4305     \
4070                                        -wd4554 ;;
4071             -Wextra)              echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
4072                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
4073                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
4074                                        -wd4307 \
4075                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
4076         esac
4077     done
4078 }
4079
4080 icl_flags(){
4081     msvc_common_flags "$@"
4082     for flag; do
4083         case $flag in
4084             # Despite what Intel's documentation says -Wall, which is supported
4085             # on Windows, does enable remarks so disable them here.
4086             -Wall)                echo $flag -Qdiag-disable:remark ;;
4087             -std=c99)             echo -Qstd=c99 ;;
4088             -flto)                echo -ipo ;;
4089         esac
4090     done
4091 }
4092
4093 icc_flags(){
4094     for flag; do
4095         case $flag in
4096             -flto)                echo -ipo ;;
4097             *)                    echo $flag ;;
4098         esac
4099     done
4100 }
4101
4102 suncc_flags(){
4103     for flag; do
4104         case $flag in
4105             -march=*|-mcpu=*)
4106                 case "${flag#*=}" in
4107                     native)                   echo -xtarget=native       ;;
4108                     v9|niagara)               echo -xarch=sparc          ;;
4109                     ultrasparc)               echo -xarch=sparcvis       ;;
4110                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
4111                     i586|pentium)             echo -xchip=pentium        ;;
4112                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
4113                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
4114                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
4115                     pentium4*)          echo -xtarget=pentium4           ;;
4116                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
4117                     *-sse3)             echo -xarch=sse3                 ;;
4118                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
4119                     bonnell)                   echo -xarch=ssse3         ;;
4120                     corei7|nehalem)            echo -xtarget=nehalem     ;;
4121                     westmere)                  echo -xtarget=westmere    ;;
4122                     silvermont)                echo -xarch=sse4_2        ;;
4123                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
4124                     core-avx*|ivybridge|haswell|broadwell|skylake*|knl)
4125                                                echo -xarch=avx           ;;
4126                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
4127                     btver1)                    echo -xarch=amdsse4a      ;;
4128                     btver2|bdver*|znver*)      echo -xarch=avx           ;;
4129                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
4130                     k8|opteron|athlon64|athlon-fx)
4131                                                echo -xarch=sse2a         ;;
4132                     athlon*)                   echo -xarch=pentium_proa  ;;
4133                 esac
4134                 ;;
4135             -std=c99)             echo -xc99              ;;
4136             -fomit-frame-pointer) echo -xregs=frameptr    ;;
4137             -fPIC)                echo -KPIC -xcode=pic32 ;;
4138             -W*,*)                echo $flag              ;;
4139             -f*-*|-W*|-mimpure-text)                      ;;
4140             -shared)              echo -G