avfilter/vf_amplify: add timeline support
[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
120 Documentation options:
121   --disable-doc            do not build documentation
122   --disable-htmlpages      do not build HTML documentation pages
123   --disable-manpages       do not build man documentation pages
124   --disable-podpages       do not build POD documentation pages
125   --disable-txtpages       do not build text documentation pages
126
127 Component options:
128   --disable-avdevice       disable libavdevice build
129   --disable-avcodec        disable libavcodec build
130   --disable-avformat       disable libavformat build
131   --disable-swresample     disable libswresample build
132   --disable-swscale        disable libswscale build
133   --disable-postproc       disable libpostproc build
134   --disable-avfilter       disable libavfilter build
135   --enable-avresample      enable libavresample build (deprecated) [no]
136   --disable-pthreads       disable pthreads [autodetect]
137   --disable-w32threads     disable Win32 threads [autodetect]
138   --disable-os2threads     disable OS/2 threads [autodetect]
139   --disable-network        disable network support [no]
140   --disable-dct            disable DCT code
141   --disable-dwt            disable DWT code
142   --disable-error-resilience disable error resilience code
143   --disable-lsp            disable LSP code
144   --disable-lzo            disable LZO decoder code
145   --disable-mdct           disable MDCT code
146   --disable-rdft           disable RDFT code
147   --disable-fft            disable FFT code
148   --disable-faan           disable floating point AAN (I)DCT code
149   --disable-pixelutils     disable pixel utils in libavutil
150
151 Individual component options:
152   --disable-everything     disable all components listed below
153   --disable-encoder=NAME   disable encoder NAME
154   --enable-encoder=NAME    enable encoder NAME
155   --disable-encoders       disable all encoders
156   --disable-decoder=NAME   disable decoder NAME
157   --enable-decoder=NAME    enable decoder NAME
158   --disable-decoders       disable all decoders
159   --disable-hwaccel=NAME   disable hwaccel NAME
160   --enable-hwaccel=NAME    enable hwaccel NAME
161   --disable-hwaccels       disable all hwaccels
162   --disable-muxer=NAME     disable muxer NAME
163   --enable-muxer=NAME      enable muxer NAME
164   --disable-muxers         disable all muxers
165   --disable-demuxer=NAME   disable demuxer NAME
166   --enable-demuxer=NAME    enable demuxer NAME
167   --disable-demuxers       disable all demuxers
168   --enable-parser=NAME     enable parser NAME
169   --disable-parser=NAME    disable parser NAME
170   --disable-parsers        disable all parsers
171   --enable-bsf=NAME        enable bitstream filter NAME
172   --disable-bsf=NAME       disable bitstream filter NAME
173   --disable-bsfs           disable all bitstream filters
174   --enable-protocol=NAME   enable protocol NAME
175   --disable-protocol=NAME  disable protocol NAME
176   --disable-protocols      disable all protocols
177   --enable-indev=NAME      enable input device NAME
178   --disable-indev=NAME     disable input device NAME
179   --disable-indevs         disable input devices
180   --enable-outdev=NAME     enable output device NAME
181   --disable-outdev=NAME    disable output device NAME
182   --disable-outdevs        disable output devices
183   --disable-devices        disable all devices
184   --enable-filter=NAME     enable filter NAME
185   --disable-filter=NAME    disable filter NAME
186   --disable-filters        disable all filters
187
188 External library support:
189
190   Using any of the following switches will allow FFmpeg to link to the
191   corresponding external library. All the components depending on that library
192   will become enabled, if all their other dependencies are met and they are not
193   explicitly disabled. E.g. --enable-libwavpack will enable linking to
194   libwavpack and allow the libwavpack encoder to be built, unless it is
195   specifically disabled with --disable-encoder=libwavpack.
196
197   Note that only the system libraries are auto-detected. All the other external
198   libraries must be explicitly enabled.
199
200   Also note that the following help text describes the purpose of the libraries
201   themselves, not all their features will necessarily be usable by FFmpeg.
202
203   --disable-alsa           disable ALSA support [autodetect]
204   --disable-appkit         disable Apple AppKit framework [autodetect]
205   --disable-avfoundation   disable Apple AVFoundation framework [autodetect]
206   --enable-avisynth        enable reading of AviSynth script files [no]
207   --disable-bzlib          disable bzlib [autodetect]
208   --disable-coreimage      disable Apple CoreImage framework [autodetect]
209   --enable-chromaprint     enable audio fingerprinting with chromaprint [no]
210   --enable-frei0r          enable frei0r video filtering [no]
211   --enable-gcrypt          enable gcrypt, needed for rtmp(t)e support
212                            if openssl, librtmp or gmp is not used [no]
213   --enable-gmp             enable gmp, needed for rtmp(t)e support
214                            if openssl or librtmp is not used [no]
215   --enable-gnutls          enable gnutls, needed for https support
216                            if openssl, libtls or mbedtls is not used [no]
217   --disable-iconv          disable iconv [autodetect]
218   --enable-jni             enable JNI support [no]
219   --enable-ladspa          enable LADSPA audio filtering [no]
220   --enable-libaom          enable AV1 video encoding/decoding via libaom [no]
221   --enable-libaribb24      enable ARIB text and caption decoding via libaribb24 [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-libcodec2       enable codec2 en/decoding using libcodec2 [no]
230   --enable-libdav1d        enable AV1 decoding via libdav1d [no]
231   --enable-libdavs2        enable AVS2 decoding via libdavs2 [no]
232   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
233                            and libraw1394 [no]
234   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
235   --enable-libflite        enable flite (voice synthesis) support via libflite [no]
236   --enable-libfontconfig   enable libfontconfig, useful for drawtext filter [no]
237   --enable-libfreetype     enable libfreetype, needed for drawtext filter [no]
238   --enable-libfribidi      enable libfribidi, improves drawtext filter [no]
239   --enable-libgme          enable Game Music Emu via libgme [no]
240   --enable-libgsm          enable GSM de/encoding via libgsm [no]
241   --enable-libiec61883     enable iec61883 via libiec61883 [no]
242   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
243   --enable-libjack         enable JACK audio sound server [no]
244   --enable-libklvanc       enable Kernel Labs VANC processing [no]
245   --enable-libkvazaar      enable HEVC encoding via libkvazaar [no]
246   --enable-liblensfun      enable lensfun lens correction [no]
247   --enable-libmodplug      enable ModPlug via libmodplug [no]
248   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
249   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
250   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
251   --enable-libopencv       enable video filtering via libopencv [no]
252   --enable-libopenh264     enable H.264 encoding via OpenH264 [no]
253   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
254   --enable-libopenmpt      enable decoding tracked files via libopenmpt [no]
255   --enable-libopus         enable Opus de/encoding via libopus [no]
256   --enable-libpulse        enable Pulseaudio input via libpulse [no]
257   --enable-librav1e        enable AV1 encoding via rav1e [no]
258   --enable-librsvg         enable SVG rasterization via librsvg [no]
259   --enable-librubberband   enable rubberband needed for rubberband filter [no]
260   --enable-librtmp         enable RTMP[E] support via librtmp [no]
261   --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
262   --enable-libsmbclient    enable Samba protocol via libsmbclient [no]
263   --enable-libsnappy       enable Snappy compression, needed for hap encoding [no]
264   --enable-libsoxr         enable Include libsoxr resampling [no]
265   --enable-libspeex        enable Speex de/encoding via libspeex [no]
266   --enable-libsrt          enable Haivision SRT protocol via libsrt [no]
267   --enable-libssh          enable SFTP protocol via libssh [no]
268   --enable-libtensorflow   enable TensorFlow as a DNN module backend
269                            for DNN based filters like sr [no]
270   --enable-libtesseract    enable Tesseract, needed for ocr filter [no]
271   --enable-libtheora       enable Theora encoding via libtheora [no]
272   --enable-libtls          enable LibreSSL (via libtls), needed for https support
273                            if openssl, gnutls or mbedtls is not used [no]
274   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
275   --enable-libv4l2         enable libv4l2/v4l-utils [no]
276   --enable-libvidstab      enable video stabilization using vid.stab [no]
277   --enable-libvmaf         enable vmaf filter via libvmaf [no]
278   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
279   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
280                            native implementation exists [no]
281   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
282   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
283   --enable-libwebp         enable WebP encoding via libwebp [no]
284   --enable-libx264         enable H.264 encoding via x264 [no]
285   --enable-libx265         enable HEVC encoding via x265 [no]
286   --enable-libxavs         enable AVS encoding via xavs [no]
287   --enable-libxavs2        enable AVS2 encoding via xavs2 [no]
288   --enable-libxcb          enable X11 grabbing using XCB [autodetect]
289   --enable-libxcb-shm      enable X11 grabbing shm communication [autodetect]
290   --enable-libxcb-xfixes   enable X11 grabbing mouse rendering [autodetect]
291   --enable-libxcb-shape    enable X11 grabbing shape rendering [autodetect]
292   --enable-libxvid         enable Xvid encoding via xvidcore,
293                            native MPEG-4/Xvid encoder exists [no]
294   --enable-libxml2         enable XML parsing using the C library libxml2, needed
295                            for dash demuxing support [no]
296   --enable-libzimg         enable z.lib, needed for zscale filter [no]
297   --enable-libzmq          enable message passing via libzmq [no]
298   --enable-libzvbi         enable teletext support via libzvbi [no]
299   --enable-lv2             enable LV2 audio filtering [no]
300   --disable-lzma           disable lzma [autodetect]
301   --enable-decklink        enable Blackmagic DeckLink I/O support [no]
302   --enable-mbedtls         enable mbedTLS, needed for https support
303                            if openssl, gnutls or libtls is not used [no]
304   --enable-mediacodec      enable Android MediaCodec support [no]
305   --enable-libmysofa       enable libmysofa, needed for sofalizer filter [no]
306   --enable-openal          enable OpenAL 1.1 capture support [no]
307   --enable-opencl          enable OpenCL processing [no]
308   --enable-opengl          enable OpenGL rendering [no]
309   --enable-openssl         enable openssl, needed for https support
310                            if gnutls, libtls or mbedtls is not used [no]
311   --enable-pocketsphinx    enable PocketSphinx, needed for asr filter [no]
312   --disable-sndio          disable sndio support [autodetect]
313   --disable-schannel       disable SChannel SSP, needed for TLS support on
314                            Windows if openssl and gnutls are not used [autodetect]
315   --disable-sdl2           disable sdl2 [autodetect]
316   --disable-securetransport disable Secure Transport, needed for TLS support
317                            on OSX if openssl and gnutls are not used [autodetect]
318   --enable-vapoursynth     enable VapourSynth demuxer [no]
319   --disable-xlib           disable xlib [autodetect]
320   --disable-zlib           disable zlib [autodetect]
321
322   The following libraries provide various hardware acceleration features:
323   --disable-amf            disable AMF video encoding code [autodetect]
324   --disable-audiotoolbox   disable Apple AudioToolbox code [autodetect]
325   --enable-cuda-nvcc       enable Nvidia CUDA compiler [no]
326   --disable-cuda-llvm      disable CUDA compilation using clang [autodetect]
327   --disable-cuvid          disable Nvidia CUVID support [autodetect]
328   --disable-d3d11va        disable Microsoft Direct3D 11 video acceleration code [autodetect]
329   --disable-dxva2          disable Microsoft DirectX 9 video acceleration code [autodetect]
330   --disable-ffnvcodec      disable dynamically linked Nvidia code [autodetect]
331   --enable-libdrm          enable DRM code (Linux) [no]
332   --enable-libmfx          enable Intel MediaSDK (AKA Quick Sync Video) code via libmfx [no]
333   --enable-libnpp          enable Nvidia Performance Primitives-based code [no]
334   --enable-mmal            enable Broadcom Multi-Media Abstraction Layer (Raspberry Pi) via MMAL [no]
335   --disable-nvdec          disable Nvidia video decoding acceleration (via hwaccel) [autodetect]
336   --disable-nvenc          disable Nvidia video encoding code [autodetect]
337   --enable-omx             enable OpenMAX IL code [no]
338   --enable-omx-rpi         enable OpenMAX IL code for Raspberry Pi [no]
339   --enable-rkmpp           enable Rockchip Media Process Platform code [no]
340   --disable-v4l2-m2m       disable V4L2 mem2mem code [autodetect]
341   --disable-vaapi          disable Video Acceleration API (mainly Unix/Intel) code [autodetect]
342   --disable-vdpau          disable Nvidia Video Decode and Presentation API for Unix code [autodetect]
343   --disable-videotoolbox   disable VideoToolbox code [autodetect]
344
345 Toolchain options:
346   --arch=ARCH              select architecture [$arch]
347   --cpu=CPU                select the minimum required CPU (affects
348                            instruction selection, may crash on older CPUs)
349   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
350   --progs-suffix=SUFFIX    program name suffix []
351   --enable-cross-compile   assume a cross-compiler is used
352   --sysroot=PATH           root of cross-build tree
353   --sysinclude=PATH        location of cross-build system headers
354   --target-os=OS           compiler targets OS [$target_os]
355   --target-exec=CMD        command to run executables on target
356   --target-path=DIR        path to view of build directory on target
357   --target-samples=DIR     path to samples directory on target
358   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
359   --toolchain=NAME         set tool defaults according to NAME
360                            (gcc-asan, clang-asan, gcc-msan, clang-msan,
361                            gcc-tsan, clang-tsan, gcc-usan, clang-usan,
362                            valgrind-massif, valgrind-memcheck,
363                            msvc, icl, gcov, llvm-cov, hardened)
364   --nm=NM                  use nm tool NM [$nm_default]
365   --ar=AR                  use archive tool AR [$ar_default]
366   --as=AS                  use assembler AS [$as_default]
367   --ln_s=LN_S              use symbolic link tool LN_S [$ln_s_default]
368   --strip=STRIP            use strip tool STRIP [$strip_default]
369   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
370   --x86asmexe=EXE          use nasm-compatible assembler EXE [$x86asmexe_default]
371   --cc=CC                  use C compiler CC [$cc_default]
372   --cxx=CXX                use C compiler CXX [$cxx_default]
373   --objcc=OCC              use ObjC compiler OCC [$cc_default]
374   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
375   --nvcc=NVCC              use Nvidia CUDA compiler NVCC or clang [$nvcc_default]
376   --ld=LD                  use linker LD [$ld_default]
377   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
378   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
379   --ranlib=RANLIB          use ranlib RANLIB [$ranlib_default]
380   --doxygen=DOXYGEN        use DOXYGEN to generate API doc [$doxygen_default]
381   --host-cc=HOSTCC         use host C compiler HOSTCC
382   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
383   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
384   --host-ld=HOSTLD         use host linker HOSTLD
385   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
386   --host-extralibs=HLIBS   use libs HLIBS when linking for host
387   --host-os=OS             compiler host OS [$target_os]
388   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
389   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
390   --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
391   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
392   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
393   --extra-ldsoflags=ELDFLAGS add ELDFLAGS to LDSOFLAGS [$LDSOFLAGS]
394   --extra-libs=ELIBS       add ELIBS [$ELIBS]
395   --extra-version=STRING   version string suffix []
396   --optflags=OPTFLAGS      override optimization-related compiler flags
397   --nvccflags=NVCCFLAGS    override nvcc flags [$nvccflags_default]
398   --build-suffix=SUFFIX    library name suffix []
399   --enable-pic             build position-independent code
400   --enable-thumb           compile for Thumb instruction set
401   --enable-lto             use link-time optimization
402   --env="ENV=override"     override the environment variables
403
404 Advanced options (experts only):
405   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
406   --custom-allocator=NAME  use a supported custom allocator
407   --disable-symver         disable symbol versioning
408   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
409   --disable-safe-bitstream-reader
410                            disable buffer boundary checking in bitreaders
411                            (faster, but may crash)
412   --sws-max-filter-size=N  the max filter size swscale uses [$sws_max_filter_size_default]
413
414 Optimization options (experts only):
415   --disable-asm            disable all assembly optimizations
416   --disable-altivec        disable AltiVec optimizations
417   --disable-vsx            disable VSX optimizations
418   --disable-power8         disable POWER8 optimizations
419   --disable-amd3dnow       disable 3DNow! optimizations
420   --disable-amd3dnowext    disable 3DNow! extended optimizations
421   --disable-mmx            disable MMX optimizations
422   --disable-mmxext         disable MMXEXT optimizations
423   --disable-sse            disable SSE optimizations
424   --disable-sse2           disable SSE2 optimizations
425   --disable-sse3           disable SSE3 optimizations
426   --disable-ssse3          disable SSSE3 optimizations
427   --disable-sse4           disable SSE4 optimizations
428   --disable-sse42          disable SSE4.2 optimizations
429   --disable-avx            disable AVX optimizations
430   --disable-xop            disable XOP optimizations
431   --disable-fma3           disable FMA3 optimizations
432   --disable-fma4           disable FMA4 optimizations
433   --disable-avx2           disable AVX2 optimizations
434   --disable-avx512         disable AVX-512 optimizations
435   --disable-aesni          disable AESNI optimizations
436   --disable-armv5te        disable armv5te optimizations
437   --disable-armv6          disable armv6 optimizations
438   --disable-armv6t2        disable armv6t2 optimizations
439   --disable-vfp            disable VFP optimizations
440   --disable-neon           disable NEON optimizations
441   --disable-inline-asm     disable use of inline assembly
442   --disable-x86asm         disable use of standalone x86 assembly
443   --disable-mipsdsp        disable MIPS DSP ASE R1 optimizations
444   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
445   --disable-msa            disable MSA optimizations
446   --disable-msa2           disable MSA2 optimizations
447   --disable-mipsfpu        disable floating point MIPS optimizations
448   --disable-mmi            disable Loongson SIMD optimizations
449   --disable-fast-unaligned consider unaligned accesses slow
450
451 Developer options (useful when working on FFmpeg itself):
452   --disable-debug          disable debugging symbols
453   --enable-debug=LEVEL     set the debug level [$debuglevel]
454   --disable-optimizations  disable compiler optimizations
455   --enable-extra-warnings  enable more compiler warnings
456   --disable-stripping      disable stripping of executables and shared libraries
457   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
458                            2 causes a slowdown at runtime.
459   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
460   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
461                            leaks and errors, using the specified valgrind binary.
462                            Cannot be combined with --target-exec
463   --enable-ftrapv          Trap arithmetic overflows
464   --samples=PATH           location of test samples for FATE, if not set use
465                            \$FATE_SAMPLES at make invocation time.
466   --enable-neon-clobber-test check NEON registers for clobbering (should be
467                            used only for debugging purposes)
468   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
469                            should be used only for debugging purposes)
470   --enable-random          randomly enable/disable components
471   --disable-random
472   --enable-random=LIST     randomly enable/disable specific components or
473   --disable-random=LIST    component groups. LIST is a comma-separated list
474                            of NAME[:PROB] entries where NAME is a component
475                            (group) and PROB the probability associated with
476                            NAME (default 0.5).
477   --random-seed=VALUE      seed value for --enable/disable-random
478   --disable-valgrind-backtrace do not print a backtrace under Valgrind
479                            (only applies to --disable-optimizations builds)
480   --enable-ossfuzz         Enable building fuzzer tool
481   --libfuzzer=PATH         path to libfuzzer
482   --ignore-tests=TESTS     comma-separated list (without "fate-" prefix
483                            in the name) of tests whose result is ignored
484   --enable-linux-perf      enable Linux Performance Monitor API
485
486 NOTE: Object files are built at the place where configure is launched.
487 EOF
488   exit 0
489 }
490
491 if test -t 1 && which tput >/dev/null 2>&1; then
492     ncolors=$(tput colors)
493     if test -n "$ncolors" && test $ncolors -ge 8; then
494         bold_color=$(tput bold)
495         warn_color=$(tput setaf 3)
496         error_color=$(tput setaf 1)
497         reset_color=$(tput sgr0)
498     fi
499     # 72 used instead of 80 since that's the default of pr
500     ncols=$(tput cols)
501 fi
502 : ${ncols:=72}
503
504 log(){
505     echo "$@" >> $logfile
506 }
507
508 log_file(){
509     log BEGIN "$1"
510     log_file_i=1
511     while IFS= read -r log_file_line; do
512         printf '%5d\t%s\n' "$log_file_i" "$log_file_line"
513         log_file_i=$(($log_file_i+1))
514     done < "$1" >> "$logfile"
515     log END "$1"
516 }
517
518 warn(){
519     log "WARNING: $*"
520     WARNINGS="${WARNINGS}WARNING: $*\n"
521 }
522
523 die(){
524     log "$@"
525     echo "$error_color$bold_color$@$reset_color"
526     cat <<EOF
527
528 If you think configure made a mistake, make sure you are using the latest
529 version from Git.  If the latest version fails, report the problem to the
530 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
531 EOF
532     if disabled logging; then
533         cat <<EOF
534 Rerun configure with logging enabled (do not use --disable-logging), and
535 include the log this produces with your report.
536 EOF
537     else
538         cat <<EOF
539 Include the log file "$logfile" produced by configure as this will help
540 solve the problem.
541 EOF
542     fi
543     exit 1
544 }
545
546 # Avoid locale weirdness, besides we really just want to translate ASCII.
547 toupper(){
548     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
549 }
550
551 tolower(){
552     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
553 }
554
555 c_escape(){
556     echo "$*" | sed 's/["\\]/\\\0/g'
557 }
558
559 sh_quote(){
560     v=$(echo "$1" | sed "s/'/'\\\\''/g")
561     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
562     echo "$v"
563 }
564
565 cleanws(){
566     echo "$@" | sed 's/^ *//;s/[[:space:]][[:space:]]*/ /g;s/ *$//'
567 }
568
569 filter(){
570     pat=$1
571     shift
572     for v; do
573         eval "case '$v' in $pat) printf '%s ' '$v' ;; esac"
574     done
575 }
576
577 filter_out(){
578     pat=$1
579     shift
580     for v; do
581         eval "case '$v' in $pat) ;; *) printf '%s ' '$v' ;; esac"
582     done
583 }
584
585 map(){
586     m=$1
587     shift
588     for v; do eval $m; done
589 }
590
591 add_suffix(){
592     suffix=$1
593     shift
594     for v; do echo ${v}${suffix}; done
595 }
596
597 remove_suffix(){
598     suffix=$1
599     shift
600     for v; do echo ${v%$suffix}; done
601 }
602
603 set_all(){
604     value=$1
605     shift
606     for var in $*; do
607         eval $var=$value
608     done
609 }
610
611 set_weak(){
612     value=$1
613     shift
614     for var; do
615         eval : \${$var:=$value}
616     done
617 }
618
619 sanitize_var_name(){
620     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
621 }
622
623 set_sanitized(){
624     var=$1
625     shift
626     eval $(sanitize_var_name "$var")='$*'
627 }
628
629 get_sanitized(){
630     eval echo \$$(sanitize_var_name "$1")
631 }
632
633 pushvar(){
634     for pvar in $*; do
635         eval level=\${${pvar}_level:=0}
636         eval ${pvar}_${level}="\$$pvar"
637         eval ${pvar}_level=$(($level+1))
638     done
639 }
640
641 popvar(){
642     for pvar in $*; do
643         eval level=\${${pvar}_level:-0}
644         test $level = 0 && continue
645         eval level=$(($level-1))
646         eval $pvar="\${${pvar}_${level}}"
647         eval ${pvar}_level=$level
648         eval unset ${pvar}_${level}
649     done
650 }
651
652 request(){
653     for var in $*; do
654         eval ${var}_requested=yes
655         eval $var=
656     done
657 }
658
659 warn_if_gets_disabled(){
660     for var in $*; do
661         WARN_IF_GETS_DISABLED_LIST="$WARN_IF_GETS_DISABLED_LIST $var"
662     done
663 }
664
665 enable(){
666     set_all yes $*
667 }
668
669 disable(){
670     set_all no $*
671 }
672
673 disable_with_reason(){
674     disable $1
675     eval "${1}_disable_reason=\"$2\""
676     if requested $1; then
677         die "ERROR: $1 requested, but $2"
678     fi
679 }
680
681 enable_weak(){
682     set_weak yes $*
683 }
684
685 disable_weak(){
686     set_weak no $*
687 }
688
689 enable_sanitized(){
690     for var; do
691         enable $(sanitize_var_name $var)
692     done
693 }
694
695 disable_sanitized(){
696     for var; do
697         disable $(sanitize_var_name $var)
698     done
699 }
700
701 do_enable_deep(){
702     for var; do
703         enabled $var && continue
704         set -- $var
705         eval enable_deep \$${var}_select
706         var=$1
707         eval enable_deep_weak \$${var}_suggest
708     done
709 }
710
711 enable_deep(){
712     do_enable_deep $*
713     enable $*
714 }
715
716 enable_deep_weak(){
717     for var; do
718         disabled $var && continue
719         set -- $var
720         do_enable_deep $var
721         var=$1
722         enable_weak $var
723     done
724 }
725
726 requested(){
727     test "${1#!}" = "$1" && op="=" || op="!="
728     eval test "x\$${1#!}_requested" $op "xyes"
729 }
730
731 enabled(){
732     test "${1#!}" = "$1" && op="=" || op="!="
733     eval test "x\$${1#!}" $op "xyes"
734 }
735
736 disabled(){
737     test "${1#!}" = "$1" && op="=" || op="!="
738     eval test "x\$${1#!}" $op "xno"
739 }
740
741 enabled_all(){
742     for opt; do
743         enabled $opt || return 1
744     done
745 }
746
747 disabled_all(){
748     for opt; do
749         disabled $opt || return 1
750     done
751 }
752
753 enabled_any(){
754     for opt; do
755         enabled $opt && return 0
756     done
757 }
758
759 disabled_any(){
760     for opt; do
761         disabled $opt && return 0
762     done
763     return 1
764 }
765
766 set_default(){
767     for opt; do
768         eval : \${$opt:=\$${opt}_default}
769     done
770 }
771
772 is_in(){
773     value=$1
774     shift
775     for var in $*; do
776         [ $var = $value ] && return 0
777     done
778     return 1
779 }
780
781 # The cfg loop is very hot (several thousands iterations), and in bash also
782 # potentialy quite slow. Try to abort the iterations early, preferably without
783 # calling functions. 70%+ of the time cfg is already done or without deps.
784 check_deps(){
785     for cfg; do
786         eval [ x\$${cfg}_checking = xdone ] && continue
787         eval [ x\$${cfg}_checking = xinprogress ] && die "Circular dependency for $cfg."
788
789         eval "
790         dep_all=\$${cfg}_deps
791         dep_any=\$${cfg}_deps_any
792         dep_con=\$${cfg}_conflict
793         dep_sel=\$${cfg}_select
794         dep_sgs=\$${cfg}_suggest
795         dep_ifa=\$${cfg}_if
796         dep_ifn=\$${cfg}_if_any
797         "
798
799         # most of the time here $cfg has no deps - avoid costly no-op work
800         if [ "$dep_all$dep_any$dep_con$dep_sel$dep_sgs$dep_ifa$dep_ifn" ]; then
801             eval ${cfg}_checking=inprogress
802
803             set -- $cfg "$dep_all" "$dep_any" "$dep_con" "$dep_sel" "$dep_sgs" "$dep_ifa" "$dep_ifn"
804             check_deps $dep_all $dep_any $dep_con $dep_sel $dep_sgs $dep_ifa $dep_ifn
805             cfg=$1; dep_all=$2; dep_any=$3; dep_con=$4; dep_sel=$5 dep_sgs=$6; dep_ifa=$7; dep_ifn=$8
806
807             [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
808             [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
809             enabled_all  $dep_all || { disable_with_reason $cfg "not all dependencies are satisfied: $dep_all"; }
810             enabled_any  $dep_any || { disable_with_reason $cfg "not any dependency is satisfied: $dep_any"; }
811             disabled_all $dep_con || { disable_with_reason $cfg "some conflicting dependencies are unsatisfied: $dep_con"; }
812             disabled_any $dep_sel && { disable_with_reason $cfg "some selected dependency is unsatisfied: $dep_sel"; }
813
814             enabled $cfg && enable_deep_weak $dep_sel $dep_sgs
815
816             for dep in $dep_all $dep_any $dep_sel $dep_sgs; do
817                 # filter out library deps, these do not belong in extralibs
818                 is_in $dep $LIBRARY_LIST && continue
819                 enabled $dep && eval append ${cfg}_extralibs ${dep}_extralibs
820             done
821         fi
822
823         eval ${cfg}_checking=done
824     done
825 }
826
827 print_config(){
828     pfx=$1
829     files=$2
830     shift 2
831     map 'eval echo "$v \${$v:-no}"' "$@" |
832     awk "BEGIN { split(\"$files\", files) }
833         {
834             c = \"$pfx\" toupper(\$1);
835             v = \$2;
836             sub(/yes/, 1, v);
837             sub(/no/,  0, v);
838             for (f in files) {
839                 file = files[f];
840                 if (file ~ /\\.h\$/) {
841                     printf(\"#define %s %d\\n\", c, v) >>file;
842                 } else if (file ~ /\\.asm\$/) {
843                     printf(\"%%define %s %d\\n\", c, v) >>file;
844                 } else if (file ~ /\\.mak\$/) {
845                     n = -v ? \"\" : \"!\";
846                     printf(\"%s%s=yes\\n\", n, c) >>file;
847                 } else if (file ~ /\\.texi\$/) {
848                     pre = -v ? \"\" : \"@c \";
849                     yesno = \$2;
850                     c2 = tolower(c);
851                     gsub(/_/, \"-\", c2);
852                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
853                 }
854             }
855         }"
856 }
857
858 print_enabled(){
859     suf=$1
860     shift
861     for v; do
862         enabled $v && printf "%s\n" ${v%$suf}
863     done
864 }
865
866 append(){
867     var=$1
868     shift
869     eval "$var=\"\$$var $*\""
870 }
871
872 prepend(){
873     var=$1
874     shift
875     eval "$var=\"$* \$$var\""
876 }
877
878 reverse () {
879     eval '
880         reverse_out=
881         for v in $'$1'; do
882             reverse_out="$v $reverse_out"
883         done
884         '$1'=$reverse_out
885     '
886 }
887
888 # keeps the last occurence of each non-unique item
889 unique(){
890     unique_out=
891     eval unique_in=\$$1
892     reverse unique_in
893     for v in $unique_in; do
894         # " $unique_out" +space such that every item is surrounded with spaces
895         case " $unique_out" in *" $v "*) continue; esac  # already in list
896         unique_out="$unique_out$v "
897     done
898     reverse unique_out
899     eval $1=\$unique_out
900 }
901
902 resolve(){
903     resolve_out=
904     eval resolve_in=\$$1
905     for v in $resolve_in; do
906         eval 'resolve_out="$resolve_out$'$v' "'
907     done
908     eval $1=\$resolve_out
909 }
910
911 add_cppflags(){
912     append CPPFLAGS "$@"
913 }
914
915 add_cflags(){
916     append CFLAGS $($cflags_filter "$@")
917 }
918
919 add_cflags_headers(){
920     append CFLAGS_HEADERS $($cflags_filter "$@")
921 }
922
923 add_cxxflags(){
924     append CXXFLAGS $($cflags_filter "$@")
925 }
926
927 add_objcflags(){
928     append OBJCFLAGS $($objcflags_filter "$@")
929 }
930
931 add_asflags(){
932     append ASFLAGS $($asflags_filter "$@")
933 }
934
935 add_ldflags(){
936     append LDFLAGS $($ldflags_filter "$@")
937 }
938
939 add_ldexeflags(){
940     append LDEXEFLAGS $($ldflags_filter "$@")
941 }
942
943 add_ldsoflags(){
944     append LDSOFLAGS $($ldflags_filter "$@")
945 }
946
947 add_extralibs(){
948     prepend extralibs $($ldflags_filter "$@")
949 }
950
951 add_stripflags(){
952     append ASMSTRIPFLAGS "$@"
953 }
954
955 add_host_cppflags(){
956     append host_cppflags "$@"
957 }
958
959 add_host_cflags(){
960     append host_cflags $($host_cflags_filter "$@")
961 }
962
963 add_host_ldflags(){
964     append host_ldflags $($host_ldflags_filter "$@")
965 }
966
967 add_compat(){
968     append compat_objs $1
969     shift
970     map 'add_cppflags -D$v' "$@"
971 }
972
973 test_cmd(){
974     log "$@"
975     "$@" >> $logfile 2>&1
976 }
977
978 test_stat(){
979     log test_stat "$@"
980     stat "$1" >> $logfile 2>&1
981 }
982
983 cc_e(){
984     eval printf '%s\\n' $CC_E
985 }
986
987 cc_o(){
988     eval printf '%s\\n' $CC_O
989 }
990
991 as_o(){
992     eval printf '%s\\n' $AS_O
993 }
994
995 x86asm_o(){
996     eval printf '%s\\n' $X86ASM_O
997 }
998
999 ld_o(){
1000     eval printf '%s\\n' $LD_O
1001 }
1002
1003 hostcc_e(){
1004     eval printf '%s\\n' $HOSTCC_E
1005 }
1006
1007 hostcc_o(){
1008     eval printf '%s\\n' $HOSTCC_O
1009 }
1010
1011 nvcc_o(){
1012     eval printf '%s\\n' $NVCC_O
1013 }
1014
1015 test_cc(){
1016     log test_cc "$@"
1017     cat > $TMPC
1018     log_file $TMPC
1019     test_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
1020 }
1021
1022 test_cxx(){
1023     log test_cxx "$@"
1024     cat > $TMPCPP
1025     log_file $TMPCPP
1026     test_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
1027 }
1028
1029 test_objcc(){
1030     log test_objcc "$@"
1031     cat > $TMPM
1032     log_file $TMPM
1033     test_cmd $objcc -Werror=missing-prototypes $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPM
1034 }
1035
1036 test_nvcc(){
1037     log test_nvcc "$@"
1038     cat > $TMPCU
1039     log_file $TMPCU
1040     tmpcu_=$TMPCU
1041     tmpo_=$TMPO
1042     [ -x "$(command -v cygpath)" ] && tmpcu_=$(cygpath -m $tmpcu_) && tmpo_=$(cygpath -m $tmpo_)
1043     test_cmd $nvcc $nvccflags "$@" $NVCC_C $(nvcc_o $tmpo_) $tmpcu_
1044 }
1045
1046 check_nvcc() {
1047     log check_nvcc "$@"
1048     name=$1
1049     shift 1
1050     disabled $name && return
1051     disable $name
1052     test_nvcc "$@" <<EOF && enable $name
1053 extern "C" {
1054     __global__ void hello(unsigned char *data) {}
1055 }
1056 EOF
1057 }
1058
1059 test_cpp(){
1060     log test_cpp "$@"
1061     cat > $TMPC
1062     log_file $TMPC
1063     test_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
1064 }
1065
1066 test_as(){
1067     log test_as "$@"
1068     cat > $TMPS
1069     log_file $TMPS
1070     test_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
1071 }
1072
1073 test_x86asm(){
1074     log test_x86asm "$@"
1075     echo "$1" > $TMPASM
1076     log_file $TMPASM
1077     shift
1078     test_cmd $x86asmexe $X86ASMFLAGS -Werror "$@" $(x86asm_o $TMPO) $TMPASM
1079 }
1080
1081 check_cmd(){
1082     log check_cmd "$@"
1083     cmd=$1
1084     disabled $cmd && return
1085     disable $cmd
1086     test_cmd $@ && enable $cmd
1087 }
1088
1089 check_as(){
1090     log check_as "$@"
1091     name=$1
1092     code=$2
1093     shift 2
1094     disable $name
1095     test_as $@ <<EOF && enable $name
1096 $code
1097 EOF
1098 }
1099
1100 check_inline_asm(){
1101     log check_inline_asm "$@"
1102     name="$1"
1103     code="$2"
1104     shift 2
1105     disable $name
1106     test_cc "$@" <<EOF && enable $name
1107 void foo(void){ __asm__ volatile($code); }
1108 EOF
1109 }
1110
1111 check_inline_asm_flags(){
1112     log check_inline_asm_flags "$@"
1113     name="$1"
1114     code="$2"
1115     flags=''
1116     shift 2
1117     while [ "$1" != "" ]; do
1118       append flags $1
1119       shift
1120     done;
1121     disable $name
1122     cat > $TMPC <<EOF
1123 void foo(void){ __asm__ volatile($code); }
1124 EOF
1125     log_file $TMPC
1126     test_cmd $cc $CPPFLAGS $CFLAGS $flags "$@" $CC_C $(cc_o $TMPO) $TMPC &&
1127     enable $name && add_cflags $flags && add_asflags $flags && add_ldflags $flags
1128 }
1129
1130 check_insn(){
1131     log check_insn "$@"
1132     check_inline_asm ${1}_inline "\"$2\""
1133     check_as ${1}_external "$2"
1134 }
1135
1136 check_x86asm(){
1137     log check_x86asm "$@"
1138     name=$1
1139     shift
1140     disable $name
1141     test_x86asm "$@" && enable $name
1142 }
1143
1144 test_ld(){
1145     log test_ld "$@"
1146     type=$1
1147     shift 1
1148     flags=$(filter_out '-l*|*.so' $@)
1149     libs=$(filter '-l*|*.so' $@)
1150     test_$type $($cflags_filter $flags) || return
1151     flags=$($ldflags_filter $flags)
1152     libs=$($ldflags_filter $libs)
1153     test_cmd $ld $LDFLAGS $LDEXEFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
1154 }
1155
1156 check_ld(){
1157     log check_ld "$@"
1158     type=$1
1159     name=$2
1160     shift 2
1161     disable $name
1162     test_ld $type $@ && enable $name
1163 }
1164
1165 print_include(){
1166     hdr=$1
1167     test "${hdr%.h}" = "${hdr}" &&
1168         echo "#include $hdr"    ||
1169         echo "#include <$hdr>"
1170 }
1171
1172 test_code(){
1173     log test_code "$@"
1174     check=$1
1175     headers=$2
1176     code=$3
1177     shift 3
1178     {
1179         for hdr in $headers; do
1180             print_include $hdr
1181         done
1182         echo "int main(void) { $code; return 0; }"
1183     } | test_$check "$@"
1184 }
1185
1186 check_cppflags(){
1187     log check_cppflags "$@"
1188     test_cpp "$@" <<EOF && append CPPFLAGS "$@"
1189 #include <stdlib.h>
1190 EOF
1191 }
1192
1193 test_cflags(){
1194     log test_cflags "$@"
1195     set -- $($cflags_filter "$@")
1196     test_cc "$@" <<EOF
1197 int x;
1198 EOF
1199 }
1200
1201 check_cflags(){
1202     log check_cflags "$@"
1203     test_cflags "$@" && add_cflags "$@"
1204 }
1205
1206 check_cxxflags(){
1207     log check_cxxflags "$@"
1208     set -- $($cflags_filter "$@")
1209     test_cxx "$@" <<EOF && append CXXFLAGS "$@"
1210 int x;
1211 EOF
1212 }
1213
1214 test_objcflags(){
1215     log test_objcflags "$@"
1216     set -- $($objcflags_filter "$@")
1217     test_objcc "$@" <<EOF
1218 int x;
1219 EOF
1220 }
1221
1222 check_objcflags(){
1223     log check_objcflags "$@"
1224     test_objcflags "$@" && add_objcflags "$@"
1225 }
1226
1227 test_ldflags(){
1228     log test_ldflags "$@"
1229     set -- $($ldflags_filter "$@")
1230     test_ld "cc" "$@" <<EOF
1231 int main(void){ return 0; }
1232 EOF
1233 }
1234
1235 check_ldflags(){
1236     log check_ldflags "$@"
1237     test_ldflags "$@" && add_ldflags "$@"
1238 }
1239
1240 test_stripflags(){
1241     log test_stripflags "$@"
1242     # call test_cc to get a fresh TMPO
1243     test_cc <<EOF
1244 int main(void) { return 0; }
1245 EOF
1246     test_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
1247 }
1248
1249 check_stripflags(){
1250     log check_stripflags "$@"
1251     test_stripflags "$@" && add_stripflags "$@"
1252 }
1253
1254 check_headers(){
1255     log check_headers "$@"
1256     headers=$1
1257     shift
1258     disable_sanitized $headers
1259     {
1260         for hdr in $headers; do
1261             print_include $hdr
1262         done
1263         echo "int x;"
1264     } | test_cpp "$@" && enable_sanitized $headers
1265 }
1266
1267 check_header_objcc(){
1268     log check_header_objcc "$@"
1269     rm -f -- "$TMPO"
1270     header=$1
1271     shift
1272     disable_sanitized $header
1273     {
1274        echo "#include <$header>"
1275        echo "int main(void) { return 0; }"
1276     } | test_objcc && test_stat "$TMPO" && enable_sanitized $header
1277 }
1278
1279 check_apple_framework(){
1280     log check_apple_framework "$@"
1281     framework="$1"
1282     name="$(tolower $framework)"
1283     header="${framework}/${framework}.h"
1284     disable $name
1285     check_header_objcc $header &&
1286         enable $name && eval ${name}_extralibs='"-framework $framework"'
1287 }
1288
1289 check_func(){
1290     log check_func "$@"
1291     func=$1
1292     shift
1293     disable $func
1294     test_ld "cc" "$@" <<EOF && enable $func
1295 extern int $func();
1296 int main(void){ $func(); }
1297 EOF
1298 }
1299
1300 check_complexfunc(){
1301     log check_complexfunc "$@"
1302     func=$1
1303     narg=$2
1304     shift 2
1305     test $narg = 2 && args="f, g" || args="f * I"
1306     disable $func
1307     test_ld "cc" "$@" <<EOF && enable $func
1308 #include <complex.h>
1309 #include <math.h>
1310 float foo(complex float f, complex float g) { return $func($args); }
1311 int main(void){ return (int) foo; }
1312 EOF
1313 }
1314
1315 check_mathfunc(){
1316     log check_mathfunc "$@"
1317     func=$1
1318     narg=$2
1319     shift 2
1320     test $narg = 2 && args="f, g" || args="f"
1321     disable $func
1322     test_ld "cc" "$@" <<EOF && enable $func
1323 #include <math.h>
1324 float foo(float f, float g) { return $func($args); }
1325 int main(void){ return (int) foo; }
1326 EOF
1327 }
1328
1329 check_func_headers(){
1330     log check_func_headers "$@"
1331     headers=$1
1332     funcs=$2
1333     shift 2
1334     {
1335         for hdr in $headers; do
1336             print_include $hdr
1337         done
1338         echo "#include <stdint.h>"
1339         for func in $funcs; do
1340             echo "long check_$func(void) { return (long) $func; }"
1341         done
1342         echo "int main(void) { int ret = 0;"
1343         # LTO could optimize out the test functions without this
1344         for func in $funcs; do
1345             echo " ret |= ((intptr_t)check_$func) & 0xFFFF;"
1346         done
1347         echo "return ret; }"
1348     } | test_ld "cc" "$@" && enable $funcs && enable_sanitized $headers
1349 }
1350
1351 check_class_headers_cpp(){
1352     log check_class_headers_cpp "$@"
1353     headers=$1
1354     classes=$2
1355     shift 2
1356     {
1357         for hdr in $headers; do
1358             echo "#include <$hdr>"
1359         done
1360         echo "int main(void) { "
1361         i=1
1362         for class in $classes; do
1363             echo "$class obj$i;"
1364             i=$(expr $i + 1)
1365         done
1366         echo "return 0; }"
1367     } | test_ld "cxx" "$@" && enable $funcs && enable_sanitized $headers
1368 }
1369
1370 test_cpp_condition(){
1371     log test_cpp_condition "$@"
1372     header=$1
1373     condition=$2
1374     shift 2
1375     test_cpp "$@" <<EOF
1376 #include <$header>
1377 #if !($condition)
1378 #error "unsatisfied condition: $condition"
1379 #endif
1380 EOF
1381 }
1382
1383 check_cpp_condition(){
1384     log check_cpp_condition "$@"
1385     name=$1
1386     shift 1
1387     disable $name
1388     test_cpp_condition "$@" && enable $name
1389 }
1390
1391 test_cflags_cc(){
1392     log test_cflags_cc "$@"
1393     flags=$1
1394     header=$2
1395     condition=$3
1396     shift 3
1397     set -- $($cflags_filter "$flags")
1398     test_cc "$@" <<EOF
1399 #include <$header>
1400 #if !($condition)
1401 #error "unsatisfied condition: $condition"
1402 #endif
1403 EOF
1404 }
1405
1406 check_lib(){
1407     log check_lib "$@"
1408     name="$1"
1409     headers="$2"
1410     funcs="$3"
1411     shift 3
1412     disable $name
1413     check_func_headers "$headers" "$funcs" "$@" &&
1414         enable $name && eval ${name}_extralibs="\$@"
1415 }
1416
1417 check_lib_cpp(){
1418     log check_lib_cpp "$@"
1419     name="$1"
1420     headers="$2"
1421     classes="$3"
1422     shift 3
1423     disable $name
1424     check_class_headers_cpp "$headers" "$classes" "$@" &&
1425         enable $name && eval ${name}_extralibs="\$@"
1426 }
1427
1428 test_pkg_config(){
1429     log test_pkg_config "$@"
1430     name="$1"
1431     pkg_version="$2"
1432     pkg="${2%% *}"
1433     headers="$3"
1434     funcs="$4"
1435     shift 4
1436     disable $name
1437     test_cmd $pkg_config --exists --print-errors $pkg_version || return
1438     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1439     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1440     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1441         enable $name &&
1442         set_sanitized "${name}_cflags"    $pkg_cflags &&
1443         set_sanitized "${name}_extralibs" $pkg_libs
1444 }
1445
1446 check_pkg_config(){
1447     log check_pkg_config "$@"
1448     name="$1"
1449     test_pkg_config "$@" &&
1450         eval add_cflags \$${name}_cflags
1451 }
1452
1453 test_exec(){
1454     test_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1455 }
1456
1457 check_exec_crash(){
1458     log check_exec_crash "$@"
1459     code=$(cat)
1460
1461     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1462     # are safe but may not be available everywhere.  Thus we use
1463     # raise(SIGTERM) instead.  The check is run in a subshell so we
1464     # can redirect the "Terminated" message from the shell.  SIGBUS
1465     # is not defined by standard C so it is used conditionally.
1466
1467     (test_exec "$@") >> $logfile 2>&1 <<EOF
1468 #include <signal.h>
1469 static void sighandler(int sig){
1470     raise(SIGTERM);
1471 }
1472 int foo(void){
1473     $code
1474 }
1475 int (*func_ptr)(void) = foo;
1476 int main(void){
1477     signal(SIGILL, sighandler);
1478     signal(SIGFPE, sighandler);
1479     signal(SIGSEGV, sighandler);
1480 #ifdef SIGBUS
1481     signal(SIGBUS, sighandler);
1482 #endif
1483     return func_ptr();
1484 }
1485 EOF
1486 }
1487
1488 check_type(){
1489     log check_type "$@"
1490     headers=$1
1491     type=$2
1492     shift 2
1493     disable_sanitized "$type"
1494     test_code cc "$headers" "$type v" "$@" && enable_sanitized "$type"
1495 }
1496
1497 check_struct(){
1498     log check_struct "$@"
1499     headers=$1
1500     struct=$2
1501     member=$3
1502     shift 3
1503     disable_sanitized "${struct}_${member}"
1504     test_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1505         enable_sanitized "${struct}_${member}"
1506 }
1507
1508 check_builtin(){
1509     log check_builtin "$@"
1510     name=$1
1511     headers=$2
1512     builtin=$3
1513     shift 3
1514     disable "$name"
1515     test_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1516 }
1517
1518 check_compile_assert(){
1519     log check_compile_assert "$@"
1520     name=$1
1521     headers=$2
1522     condition=$3
1523     shift 3
1524     disable "$name"
1525     test_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1526 }
1527
1528 check_cc(){
1529     log check_cc "$@"
1530     name=$1
1531     shift
1532     disable "$name"
1533     test_code cc "$@" && enable "$name"
1534 }
1535
1536 require(){
1537     log require "$@"
1538     name_version="$1"
1539     name="${1%% *}"
1540     shift
1541     check_lib $name "$@" || die "ERROR: $name_version not found"
1542 }
1543
1544 require_cc(){
1545     log require_cc "$@"
1546     name="$1"
1547     check_cc "$@" || die "ERROR: $name failed"
1548 }
1549
1550 require_cpp(){
1551     name="$1"
1552     headers="$2"
1553     classes="$3"
1554     shift 3
1555     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1556 }
1557
1558 require_headers(){
1559     log require_headers "$@"
1560     headers="$1"
1561     check_headers "$@" || die "ERROR: $headers not found"
1562 }
1563
1564 require_cpp_condition(){
1565     log require_cpp_condition "$@"
1566     condition="$3"
1567     check_cpp_condition "$@" || die "ERROR: $condition not satisfied"
1568 }
1569
1570 require_pkg_config(){
1571     log require_pkg_config "$@"
1572     pkg_version="$2"
1573     check_pkg_config "$@" || die "ERROR: $pkg_version not found using pkg-config$pkg_config_fail_message"
1574 }
1575
1576 test_host_cc(){
1577     log test_host_cc "$@"
1578     cat > $TMPC
1579     log_file $TMPC
1580     test_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1581 }
1582
1583 test_host_cpp(){
1584     log test_host_cpp "$@"
1585     cat > $TMPC
1586     log_file $TMPC
1587     test_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1588 }
1589
1590 check_host_cppflags(){
1591     log check_host_cppflags "$@"
1592     test_host_cpp "$@" <<EOF && append host_cppflags "$@"
1593 #include <stdlib.h>
1594 EOF
1595 }
1596
1597 check_host_cflags(){
1598     log check_host_cflags "$@"
1599     set -- $($host_cflags_filter "$@")
1600     test_host_cc "$@" <<EOF && append host_cflags "$@"
1601 int x;
1602 EOF
1603 }
1604
1605 test_host_cpp_condition(){
1606     log test_host_cpp_condition "$@"
1607     header=$1
1608     condition=$2
1609     shift 2
1610     test_host_cpp "$@" <<EOF
1611 #include <$header>
1612 #if !($condition)
1613 #error "unsatisfied condition: $condition"
1614 #endif
1615 EOF
1616 }
1617
1618 check_host_cpp_condition(){
1619     log check_host_cpp_condition "$@"
1620     name=$1
1621     shift 1
1622     disable $name
1623     test_host_cpp_condition "$@" && enable $name
1624 }
1625
1626 cp_if_changed(){
1627     cmp -s "$1" "$2" && { test "$quiet" != "yes" && echo "$2 is unchanged"; } && return
1628     mkdir -p "$(dirname $2)"
1629     cp -f "$1" "$2"
1630 }
1631
1632 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1633 # system-dependent things.
1634
1635 AVCODEC_COMPONENTS="
1636     bsfs
1637     decoders
1638     encoders
1639     hwaccels
1640     parsers
1641 "
1642
1643 AVDEVICE_COMPONENTS="
1644     indevs
1645     outdevs
1646 "
1647
1648 AVFILTER_COMPONENTS="
1649     filters
1650 "
1651
1652 AVFORMAT_COMPONENTS="
1653     demuxers
1654     muxers
1655     protocols
1656 "
1657
1658 COMPONENT_LIST="
1659     $AVCODEC_COMPONENTS
1660     $AVDEVICE_COMPONENTS
1661     $AVFILTER_COMPONENTS
1662     $AVFORMAT_COMPONENTS
1663 "
1664
1665 EXAMPLE_LIST="
1666     avio_dir_cmd_example
1667     avio_reading_example
1668     decode_audio_example
1669     decode_video_example
1670     demuxing_decoding_example
1671     encode_audio_example
1672     encode_video_example
1673     extract_mvs_example
1674     filter_audio_example
1675     filtering_audio_example
1676     filtering_video_example
1677     http_multiclient_example
1678     hw_decode_example
1679     metadata_example
1680     muxing_example
1681     qsvdec_example
1682     remuxing_example
1683     resampling_audio_example
1684     scaling_video_example
1685     transcode_aac_example
1686     transcoding_example
1687     vaapi_encode_example
1688     vaapi_transcode_example
1689 "
1690
1691 EXTERNAL_AUTODETECT_LIBRARY_LIST="
1692     alsa
1693     appkit
1694     avfoundation
1695     bzlib
1696     coreimage
1697     iconv
1698     libxcb
1699     libxcb_shm
1700     libxcb_shape
1701     libxcb_xfixes
1702     lzma
1703     schannel
1704     sdl2
1705     securetransport
1706     sndio
1707     xlib
1708     zlib
1709 "
1710
1711 EXTERNAL_LIBRARY_GPL_LIST="
1712     avisynth
1713     frei0r
1714     libcdio
1715     libdavs2
1716     librubberband
1717     libvidstab
1718     libx264
1719     libx265
1720     libxavs
1721     libxavs2
1722     libxvid
1723 "
1724
1725 EXTERNAL_LIBRARY_NONFREE_LIST="
1726     decklink
1727     libfdk_aac
1728     openssl
1729     libtls
1730 "
1731
1732 EXTERNAL_LIBRARY_VERSION3_LIST="
1733     gmp
1734     libaribb24
1735     liblensfun
1736     libopencore_amrnb
1737     libopencore_amrwb
1738     libvmaf
1739     libvo_amrwbenc
1740     mbedtls
1741     rkmpp
1742 "
1743
1744 EXTERNAL_LIBRARY_GPLV3_LIST="
1745     libsmbclient
1746 "
1747
1748 EXTERNAL_LIBRARY_LIST="
1749     $EXTERNAL_LIBRARY_GPL_LIST
1750     $EXTERNAL_LIBRARY_NONFREE_LIST
1751     $EXTERNAL_LIBRARY_VERSION3_LIST
1752     $EXTERNAL_LIBRARY_GPLV3_LIST
1753     chromaprint
1754     gcrypt
1755     gnutls
1756     jni
1757     ladspa
1758     libaom
1759     libass
1760     libbluray
1761     libbs2b
1762     libcaca
1763     libcelt
1764     libcodec2
1765     libdav1d
1766     libdc1394
1767     libdrm
1768     libflite
1769     libfontconfig
1770     libfreetype
1771     libfribidi
1772     libgme
1773     libgsm
1774     libiec61883
1775     libilbc
1776     libjack
1777     libklvanc
1778     libkvazaar
1779     libmodplug
1780     libmp3lame
1781     libmysofa
1782     libopencv
1783     libopenh264
1784     libopenjpeg
1785     libopenmpt
1786     libopus
1787     libpulse
1788     librav1e
1789     librsvg
1790     librtmp
1791     libshine
1792     libsmbclient
1793     libsnappy
1794     libsoxr
1795     libspeex
1796     libsrt
1797     libssh
1798     libtensorflow
1799     libtesseract
1800     libtheora
1801     libtwolame
1802     libv4l2
1803     libvorbis
1804     libvpx
1805     libwavpack
1806     libwebp
1807     libxml2
1808     libzimg
1809     libzmq
1810     libzvbi
1811     lv2
1812     mediacodec
1813     openal
1814     opengl
1815     pocketsphinx
1816     vapoursynth
1817 "
1818
1819 HWACCEL_AUTODETECT_LIBRARY_LIST="
1820     amf
1821     audiotoolbox
1822     crystalhd
1823     cuda
1824     cuda_llvm
1825     cuvid
1826     d3d11va
1827     dxva2
1828     ffnvcodec
1829     nvdec
1830     nvenc
1831     vaapi
1832     vdpau
1833     videotoolbox
1834     v4l2_m2m
1835     xvmc
1836 "
1837
1838 # catchall list of things that require external libs to link
1839 EXTRALIBS_LIST="
1840     cpu_init
1841     cws2fws
1842 "
1843
1844 HWACCEL_LIBRARY_NONFREE_LIST="
1845     cuda_nvcc
1846     cuda_sdk
1847     libnpp
1848 "
1849
1850 HWACCEL_LIBRARY_LIST="
1851     $HWACCEL_LIBRARY_NONFREE_LIST
1852     libmfx
1853     mmal
1854     omx
1855     opencl
1856 "
1857
1858 DOCUMENT_LIST="
1859     doc
1860     htmlpages
1861     manpages
1862     podpages
1863     txtpages
1864 "
1865
1866 FEATURE_LIST="
1867     ftrapv
1868     gray
1869     hardcoded_tables
1870     omx_rpi
1871     runtime_cpudetect
1872     safe_bitstream_reader
1873     shared
1874     small
1875     static
1876     swscale_alpha
1877 "
1878
1879 # this list should be kept in linking order
1880 LIBRARY_LIST="
1881     avdevice
1882     avfilter
1883     swscale
1884     postproc
1885     avformat
1886     avcodec
1887     swresample
1888     avresample
1889     avutil
1890 "
1891
1892 LICENSE_LIST="
1893     gpl
1894     nonfree
1895     version3
1896 "
1897
1898 PROGRAM_LIST="
1899     ffplay
1900     ffprobe
1901     ffmpeg
1902 "
1903
1904 SUBSYSTEM_LIST="
1905     dct
1906     dwt
1907     error_resilience
1908     faan
1909     fast_unaligned
1910     fft
1911     lsp
1912     lzo
1913     mdct
1914     pixelutils
1915     network
1916     rdft
1917 "
1918
1919 # COMPONENT_LIST needs to come last to ensure correct dependency checking
1920 CONFIG_LIST="
1921     $DOCUMENT_LIST
1922     $EXAMPLE_LIST
1923     $EXTERNAL_LIBRARY_LIST
1924     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1925     $HWACCEL_LIBRARY_LIST
1926     $HWACCEL_AUTODETECT_LIBRARY_LIST
1927     $FEATURE_LIST
1928     $LICENSE_LIST
1929     $LIBRARY_LIST
1930     $PROGRAM_LIST
1931     $SUBSYSTEM_LIST
1932     autodetect
1933     fontconfig
1934     linux_perf
1935     memory_poisoning
1936     neon_clobber_test
1937     ossfuzz
1938     pic
1939     thumb
1940     valgrind_backtrace
1941     xmm_clobber_test
1942     $COMPONENT_LIST
1943 "
1944
1945 THREADS_LIST="
1946     pthreads
1947     os2threads
1948     w32threads
1949 "
1950
1951 ATOMICS_LIST="
1952     atomics_gcc
1953     atomics_suncc
1954     atomics_win32
1955 "
1956
1957 AUTODETECT_LIBS="
1958     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1959     $HWACCEL_AUTODETECT_LIBRARY_LIST
1960     $THREADS_LIST
1961 "
1962
1963 ARCH_LIST="
1964     aarch64
1965     alpha
1966     arm
1967     avr32
1968     avr32_ap
1969     avr32_uc
1970     bfin
1971     ia64
1972     m68k
1973     mips
1974     mips64
1975     parisc
1976     ppc
1977     ppc64
1978     s390
1979     sh4
1980     sparc
1981     sparc64
1982     tilegx
1983     tilepro
1984     tomi
1985     x86
1986     x86_32
1987     x86_64
1988 "
1989
1990 ARCH_EXT_LIST_ARM="
1991     armv5te
1992     armv6
1993     armv6t2
1994     armv8
1995     neon
1996     vfp
1997     vfpv3
1998     setend
1999 "
2000
2001 ARCH_EXT_LIST_MIPS="
2002     mipsfpu
2003     mips32r2
2004     mips32r5
2005     mips64r2
2006     mips32r6
2007     mips64r6
2008     mipsdsp
2009     mipsdspr2
2010     msa
2011     msa2
2012 "
2013
2014 ARCH_EXT_LIST_LOONGSON="
2015     loongson2
2016     loongson3
2017     mmi
2018 "
2019
2020 ARCH_EXT_LIST_X86_SIMD="
2021     aesni
2022     amd3dnow
2023     amd3dnowext
2024     avx
2025     avx2
2026     avx512
2027     fma3
2028     fma4
2029     mmx
2030     mmxext
2031     sse
2032     sse2
2033     sse3
2034     sse4
2035     sse42
2036     ssse3
2037     xop
2038 "
2039
2040 ARCH_EXT_LIST_PPC="
2041     altivec
2042     dcbzl
2043     ldbrx
2044     power8
2045     ppc4xx
2046     vsx
2047 "
2048
2049 ARCH_EXT_LIST_X86="
2050     $ARCH_EXT_LIST_X86_SIMD
2051     cpunop
2052     i686
2053 "
2054
2055 ARCH_EXT_LIST="
2056     $ARCH_EXT_LIST_ARM
2057     $ARCH_EXT_LIST_PPC
2058     $ARCH_EXT_LIST_X86
2059     $ARCH_EXT_LIST_MIPS
2060     $ARCH_EXT_LIST_LOONGSON
2061 "
2062
2063 ARCH_FEATURES="
2064     aligned_stack
2065     fast_64bit
2066     fast_clz
2067     fast_cmov
2068     local_aligned
2069     simd_align_16
2070     simd_align_32
2071     simd_align_64
2072 "
2073
2074 BUILTIN_LIST="
2075     atomic_cas_ptr
2076     machine_rw_barrier
2077     MemoryBarrier
2078     mm_empty
2079     rdtsc
2080     sem_timedwait
2081     sync_val_compare_and_swap
2082 "
2083 HAVE_LIST_CMDLINE="
2084     inline_asm
2085     symver
2086     x86asm
2087 "
2088
2089 HAVE_LIST_PUB="
2090     bigendian
2091     fast_unaligned
2092 "
2093
2094 HEADERS_LIST="
2095     arpa_inet_h
2096     asm_types_h
2097     cdio_paranoia_h
2098     cdio_paranoia_paranoia_h
2099     cuda_h
2100     dispatch_dispatch_h
2101     dev_bktr_ioctl_bt848_h
2102     dev_bktr_ioctl_meteor_h
2103     dev_ic_bt8xx_h
2104     dev_video_bktr_ioctl_bt848_h
2105     dev_video_meteor_ioctl_meteor_h
2106     direct_h
2107     dirent_h
2108     dxgidebug_h
2109     dxva_h
2110     ES2_gl_h
2111     gsm_h
2112     io_h
2113     linux_perf_event_h
2114     machine_ioctl_bt848_h
2115     machine_ioctl_meteor_h
2116     malloc_h
2117     opencv2_core_core_c_h
2118     OpenGL_gl3_h
2119     poll_h
2120     sys_param_h
2121     sys_resource_h
2122     sys_select_h
2123     sys_soundcard_h
2124     sys_time_h
2125     sys_un_h
2126     sys_videoio_h
2127     termios_h
2128     udplite_h
2129     unistd_h
2130     valgrind_valgrind_h
2131     windows_h
2132     winsock2_h
2133 "
2134
2135 INTRINSICS_LIST="
2136     intrinsics_neon
2137 "
2138
2139 COMPLEX_FUNCS="
2140     cabs
2141     cexp
2142 "
2143
2144 MATH_FUNCS="
2145     atanf
2146     atan2f
2147     cbrt
2148     cbrtf
2149     copysign
2150     cosf
2151     erf
2152     exp2
2153     exp2f
2154     expf
2155     hypot
2156     isfinite
2157     isinf
2158     isnan
2159     ldexpf
2160     llrint
2161     llrintf
2162     log2
2163     log2f
2164     log10f
2165     lrint
2166     lrintf
2167     powf
2168     rint
2169     round
2170     roundf
2171     sinf
2172     trunc
2173     truncf
2174 "
2175
2176 SYSTEM_FEATURES="
2177     dos_paths
2178     libc_msvcrt
2179     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
2180     section_data_rel_ro
2181     threads
2182     uwp
2183     winrt
2184 "
2185
2186 SYSTEM_FUNCS="
2187     access
2188     aligned_malloc
2189     arc4random
2190     clock_gettime
2191     closesocket
2192     CommandLineToArgvW
2193     fcntl
2194     getaddrinfo
2195     gethrtime
2196     getopt
2197     GetProcessAffinityMask
2198     GetProcessMemoryInfo
2199     GetProcessTimes
2200     getrusage
2201     GetSystemTimeAsFileTime
2202     gettimeofday
2203     glob
2204     glXGetProcAddress
2205     gmtime_r
2206     inet_aton
2207     isatty
2208     kbhit
2209     localtime_r
2210     lstat
2211     lzo1x_999_compress
2212     mach_absolute_time
2213     MapViewOfFile
2214     memalign
2215     mkstemp
2216     mmap
2217     mprotect
2218     nanosleep
2219     PeekNamedPipe
2220     posix_memalign
2221     pthread_cancel
2222     sched_getaffinity
2223     SecItemImport
2224     SetConsoleTextAttribute
2225     SetConsoleCtrlHandler
2226     setmode
2227     setrlimit
2228     Sleep
2229     strerror_r
2230     sysconf
2231     sysctl
2232     usleep
2233     UTGetOSTypeFromString
2234     VirtualAlloc
2235     wglGetProcAddress
2236 "
2237
2238 SYSTEM_LIBRARIES="
2239     bcrypt
2240     vaapi_drm
2241     vaapi_x11
2242     vdpau_x11
2243 "
2244
2245 TOOLCHAIN_FEATURES="
2246     as_arch_directive
2247     as_dn_directive
2248     as_fpu_directive
2249     as_func
2250     as_object_arch
2251     asm_mod_q
2252     blocks_extension
2253     ebp_available
2254     ebx_available
2255     gnu_as
2256     gnu_windres
2257     ibm_asm
2258     inline_asm_direct_symbol_refs
2259     inline_asm_labels
2260     inline_asm_nonlocal_labels
2261     pragma_deprecated
2262     rsync_contimeout
2263     symver_asm_label
2264     symver_gnu_asm
2265     vfp_args
2266     xform_asm
2267     xmm_clobbers
2268 "
2269
2270 TYPES_LIST="
2271     kCMVideoCodecType_HEVC
2272     kCVPixelFormatType_420YpCbCr10BiPlanarVideoRange
2273     kCVImageBufferTransferFunction_SMPTE_ST_2084_PQ
2274     kCVImageBufferTransferFunction_ITU_R_2100_HLG
2275     kCVImageBufferTransferFunction_Linear
2276     socklen_t
2277     struct_addrinfo
2278     struct_group_source_req
2279     struct_ip_mreq_source
2280     struct_ipv6_mreq
2281     struct_msghdr_msg_flags
2282     struct_pollfd
2283     struct_rusage_ru_maxrss
2284     struct_sctp_event_subscribe
2285     struct_sockaddr_in6
2286     struct_sockaddr_sa_len
2287     struct_sockaddr_storage
2288     struct_stat_st_mtim_tv_nsec
2289     struct_v4l2_frmivalenum_discrete
2290 "
2291
2292 HAVE_LIST="
2293     $ARCH_EXT_LIST
2294     $(add_suffix _external $ARCH_EXT_LIST)
2295     $(add_suffix _inline   $ARCH_EXT_LIST)
2296     $ARCH_FEATURES
2297     $BUILTIN_LIST
2298     $COMPLEX_FUNCS
2299     $HAVE_LIST_CMDLINE
2300     $HAVE_LIST_PUB
2301     $HEADERS_LIST
2302     $INTRINSICS_LIST
2303     $MATH_FUNCS
2304     $SYSTEM_FEATURES
2305     $SYSTEM_FUNCS
2306     $SYSTEM_LIBRARIES
2307     $THREADS_LIST
2308     $TOOLCHAIN_FEATURES
2309     $TYPES_LIST
2310     makeinfo
2311     makeinfo_html
2312     opencl_d3d11
2313     opencl_drm_arm
2314     opencl_drm_beignet
2315     opencl_dxva2
2316     opencl_vaapi_beignet
2317     opencl_vaapi_intel_media
2318     perl
2319     pod2man
2320     texi2html
2321 "
2322
2323 # options emitted with CONFIG_ prefix but not available on the command line
2324 CONFIG_EXTRA="
2325     aandcttables
2326     ac3dsp
2327     adts_header
2328     audio_frame_queue
2329     audiodsp
2330     blockdsp
2331     bswapdsp
2332     cabac
2333     cbs
2334     cbs_av1
2335     cbs_h264
2336     cbs_h265
2337     cbs_jpeg
2338     cbs_mpeg2
2339     cbs_vp9
2340     dirac_parse
2341     dnn
2342     dvprofile
2343     exif
2344     faandct
2345     faanidct
2346     fdctdsp
2347     flacdsp
2348     fmtconvert
2349     frame_thread_encoder
2350     g722dsp
2351     golomb
2352     gplv3
2353     h263dsp
2354     h264chroma
2355     h264dsp
2356     h264parse
2357     h264pred
2358     h264qpel
2359     hevcparse
2360     hpeldsp
2361     huffman
2362     huffyuvdsp
2363     huffyuvencdsp
2364     idctdsp
2365     iirfilter
2366     mdct15
2367     intrax8
2368     iso_media
2369     ividsp
2370     jpegtables
2371     lgplv3
2372     libx262
2373     llauddsp
2374     llviddsp
2375     llvidencdsp
2376     lpc
2377     lzf
2378     me_cmp
2379     mpeg_er
2380     mpegaudio
2381     mpegaudiodsp
2382     mpegaudioheader
2383     mpegvideo
2384     mpegvideoenc
2385     mss34dsp
2386     pixblockdsp
2387     qpeldsp
2388     qsv
2389     qsvdec
2390     qsvenc
2391     qsvvpp
2392     rangecoder
2393     riffdec
2394     riffenc
2395     rtpdec
2396     rtpenc_chain
2397     rv34dsp
2398     scene_sad
2399     sinewin
2400     snappy
2401     srtp
2402     startcode
2403     texturedsp
2404     texturedspenc
2405     tpeldsp
2406     vaapi_1
2407     vaapi_encode
2408     vc1dsp
2409     videodsp
2410     vp3dsp
2411     vp56dsp
2412     vp8dsp
2413     wma_freqs
2414     wmv2dsp
2415 "
2416
2417 CMDLINE_SELECT="
2418     $ARCH_EXT_LIST
2419     $CONFIG_LIST
2420     $HAVE_LIST_CMDLINE
2421     $THREADS_LIST
2422     asm
2423     cross_compile
2424     debug
2425     extra_warnings
2426     logging
2427     lto
2428     optimizations
2429     rpath
2430     stripping
2431 "
2432
2433 PATHS_LIST="
2434     bindir
2435     datadir
2436     docdir
2437     incdir
2438     libdir
2439     mandir
2440     pkgconfigdir
2441     prefix
2442     shlibdir
2443     install_name_dir
2444 "
2445
2446 CMDLINE_SET="
2447     $PATHS_LIST
2448     ar
2449     arch
2450     as
2451     assert_level
2452     build_suffix
2453     cc
2454     objcc
2455     cpu
2456     cross_prefix
2457     custom_allocator
2458     cxx
2459     dep_cc
2460     doxygen
2461     env
2462     extra_version
2463     gas
2464     host_cc
2465     host_cflags
2466     host_extralibs
2467     host_ld
2468     host_ldflags
2469     host_os
2470     ignore_tests
2471     install
2472     ld
2473     ln_s
2474     logfile
2475     malloc_prefix
2476     nm
2477     optflags
2478     nvcc
2479     nvccflags
2480     pkg_config
2481     pkg_config_flags
2482     progs_suffix
2483     random_seed
2484     ranlib
2485     samples
2486     strip
2487     sws_max_filter_size
2488     sysinclude
2489     sysroot
2490     target_exec
2491     target_os
2492     target_path
2493     target_samples
2494     tempprefix
2495     toolchain
2496     valgrind
2497     windres
2498     x86asmexe
2499 "
2500
2501 CMDLINE_APPEND="
2502     extra_cflags
2503     extra_cxxflags
2504     extra_objcflags
2505     host_cppflags
2506 "
2507
2508 # code dependency declarations
2509
2510 # architecture extensions
2511
2512 armv5te_deps="arm"
2513 armv6_deps="arm"
2514 armv6t2_deps="arm"
2515 armv8_deps="aarch64"
2516 neon_deps_any="aarch64 arm"
2517 intrinsics_neon_deps="neon"
2518 vfp_deps_any="aarch64 arm"
2519 vfpv3_deps="vfp"
2520 setend_deps="arm"
2521
2522 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2523
2524 altivec_deps="ppc"
2525 dcbzl_deps="ppc"
2526 ldbrx_deps="ppc"
2527 ppc4xx_deps="ppc"
2528 vsx_deps="altivec"
2529 power8_deps="vsx"
2530
2531 loongson2_deps="mips"
2532 loongson3_deps="mips"
2533 mips32r2_deps="mips"
2534 mips32r5_deps="mips"
2535 mips32r6_deps="mips"
2536 mips64r2_deps="mips"
2537 mips64r6_deps="mips"
2538 mipsfpu_deps="mips"
2539 mipsdsp_deps="mips"
2540 mipsdspr2_deps="mips"
2541 mmi_deps="mips"
2542 msa_deps="mipsfpu"
2543 msa2_deps="msa"
2544
2545 cpunop_deps="i686"
2546 x86_64_select="i686"
2547 x86_64_suggest="fast_cmov"
2548
2549 amd3dnow_deps="mmx"
2550 amd3dnowext_deps="amd3dnow"
2551 i686_deps="x86"
2552 mmx_deps="x86"
2553 mmxext_deps="mmx"
2554 sse_deps="mmxext"
2555 sse2_deps="sse"
2556 sse3_deps="sse2"
2557 ssse3_deps="sse3"
2558 sse4_deps="ssse3"
2559 sse42_deps="sse4"
2560 aesni_deps="sse42"
2561 avx_deps="sse42"
2562 xop_deps="avx"
2563 fma3_deps="avx"
2564 fma4_deps="avx"
2565 avx2_deps="avx"
2566 avx512_deps="avx2"
2567
2568 mmx_external_deps="x86asm"
2569 mmx_inline_deps="inline_asm x86"
2570 mmx_suggest="mmx_external mmx_inline"
2571
2572 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2573     eval dep=\$${ext}_deps
2574     eval ${ext}_external_deps='"${dep}_external"'
2575     eval ${ext}_inline_deps='"${dep}_inline"'
2576     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2577 done
2578
2579 aligned_stack_if_any="aarch64 ppc x86"
2580 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2581 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2582 fast_unaligned_if_any="aarch64 ppc x86"
2583 simd_align_16_if_any="altivec neon sse"
2584 simd_align_32_if_any="avx"
2585 simd_align_64_if_any="avx512"
2586
2587 # system capabilities
2588 linux_perf_deps="linux_perf_event_h"
2589 symver_if_any="symver_asm_label symver_gnu_asm"
2590 valgrind_backtrace_conflict="optimizations"
2591 valgrind_backtrace_deps="valgrind_valgrind_h"
2592
2593 # threading support
2594 atomics_gcc_if="sync_val_compare_and_swap"
2595 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2596 atomics_win32_if="MemoryBarrier"
2597 atomics_native_if_any="$ATOMICS_LIST"
2598 w32threads_deps="atomics_native"
2599 threads_if_any="$THREADS_LIST"
2600
2601 # subsystems
2602 cbs_av1_select="cbs"
2603 cbs_h264_select="cbs"
2604 cbs_h265_select="cbs"
2605 cbs_jpeg_select="cbs"
2606 cbs_mpeg2_select="cbs"
2607 cbs_vp9_select="cbs"
2608 dct_select="rdft"
2609 dirac_parse_select="golomb"
2610 dnn_suggest="libtensorflow"
2611 error_resilience_select="me_cmp"
2612 faandct_deps="faan"
2613 faandct_select="fdctdsp"
2614 faanidct_deps="faan"
2615 faanidct_select="idctdsp"
2616 h264dsp_select="startcode"
2617 hevcparse_select="golomb"
2618 frame_thread_encoder_deps="encoders threads"
2619 intrax8_select="blockdsp idctdsp"
2620 mdct_select="fft"
2621 mdct15_select="fft"
2622 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2623 mpeg_er_select="error_resilience"
2624 mpegaudio_select="mpegaudiodsp mpegaudioheader"
2625 mpegaudiodsp_select="dct"
2626 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2627 mpegvideoenc_select="aandcttables me_cmp mpegvideo pixblockdsp qpeldsp"
2628 vc1dsp_select="h264chroma qpeldsp startcode"
2629 rdft_select="fft"
2630
2631 # decoders / encoders
2632 aac_decoder_select="adts_header mdct15 mdct sinewin"
2633 aac_fixed_decoder_select="adts_header mdct sinewin"
2634 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2635 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2636 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2637 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2638 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2639 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2640 acelp_kelvin_decoder_select="audiodsp"
2641 adpcm_g722_decoder_select="g722dsp"
2642 adpcm_g722_encoder_select="g722dsp"
2643 aic_decoder_select="golomb idctdsp"
2644 alac_encoder_select="lpc"
2645 als_decoder_select="bswapdsp"
2646 amrnb_decoder_select="lsp"
2647 amrwb_decoder_select="lsp"
2648 amv_decoder_select="sp5x_decoder exif"
2649 amv_encoder_select="jpegtables mpegvideoenc"
2650 ape_decoder_select="bswapdsp llauddsp"
2651 apng_decoder_deps="zlib"
2652 apng_encoder_deps="zlib"
2653 apng_encoder_select="llvidencdsp"
2654 aptx_decoder_select="audio_frame_queue"
2655 aptx_encoder_select="audio_frame_queue"
2656 aptx_hd_decoder_select="audio_frame_queue"
2657 aptx_hd_encoder_select="audio_frame_queue"
2658 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2659 asv1_encoder_select="aandcttables bswapdsp fdctdsp pixblockdsp"
2660 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2661 asv2_encoder_select="aandcttables bswapdsp fdctdsp pixblockdsp"
2662 atrac1_decoder_select="mdct sinewin"
2663 atrac3_decoder_select="mdct"
2664 atrac3al_decoder_select="mdct"
2665 atrac3p_decoder_select="mdct sinewin"
2666 atrac3pal_decoder_select="mdct sinewin"
2667 atrac9_decoder_select="mdct"
2668 avrn_decoder_select="exif jpegtables"
2669 bink_decoder_select="blockdsp hpeldsp"
2670 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2671 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2672 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2673 clearvideo_decoder_select="idctdsp"
2674 cllc_decoder_select="bswapdsp"
2675 comfortnoise_encoder_select="lpc"
2676 cook_decoder_select="audiodsp mdct sinewin"
2677 cscd_decoder_select="lzo"
2678 cscd_decoder_suggest="zlib"
2679 dca_decoder_select="mdct"
2680 dca_encoder_select="mdct"
2681 dds_decoder_select="texturedsp"
2682 dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
2683 dnxhd_decoder_select="blockdsp idctdsp"
2684 dnxhd_encoder_select="blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2685 dolby_e_decoder_select="mdct"
2686 dvvideo_decoder_select="dvprofile idctdsp"
2687 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2688 dxa_decoder_deps="zlib"
2689 dxv_decoder_select="lzf texturedsp"
2690 eac3_decoder_select="ac3_decoder"
2691 eac3_encoder_select="ac3_encoder"
2692 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2693 eatgq_decoder_select="aandcttables"
2694 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2695 exr_decoder_deps="zlib"
2696 ffv1_decoder_select="rangecoder"
2697 ffv1_encoder_select="rangecoder"
2698 ffvhuff_decoder_select="huffyuv_decoder"
2699 ffvhuff_encoder_select="huffyuv_encoder"
2700 fic_decoder_select="golomb"
2701 flac_decoder_select="flacdsp"
2702 flac_encoder_select="bswapdsp flacdsp lpc"
2703 flashsv2_decoder_deps="zlib"
2704 flashsv2_encoder_deps="zlib"
2705 flashsv_decoder_deps="zlib"
2706 flashsv_encoder_deps="zlib"
2707 flv_decoder_select="h263_decoder"
2708 flv_encoder_select="h263_encoder"
2709 fourxm_decoder_select="blockdsp bswapdsp"
2710 fraps_decoder_select="bswapdsp huffman"
2711 g2m_decoder_deps="zlib"
2712 g2m_decoder_select="blockdsp idctdsp jpegtables"
2713 g729_decoder_select="audiodsp"
2714 h261_decoder_select="mpegvideo"
2715 h261_encoder_select="mpegvideoenc"
2716 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2717 h263_encoder_select="h263dsp mpegvideoenc"
2718 h263i_decoder_select="h263_decoder"
2719 h263p_decoder_select="h263_decoder"
2720 h263p_encoder_select="h263_encoder"
2721 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
2722 h264_decoder_suggest="error_resilience"
2723 hap_decoder_select="snappy texturedsp"
2724 hap_encoder_deps="libsnappy"
2725 hap_encoder_select="texturedspenc"
2726 hevc_decoder_select="bswapdsp cabac golomb hevcparse videodsp"
2727 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2728 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llvidencdsp"
2729 hymt_decoder_select="huffyuv_decoder"
2730 iac_decoder_select="imc_decoder"
2731 imc_decoder_select="bswapdsp fft mdct sinewin"
2732 imm4_decoder_select="bswapdsp"
2733 imm5_decoder_select="h264_decoder hevc_decoder"
2734 indeo3_decoder_select="hpeldsp"
2735 indeo4_decoder_select="ividsp"
2736 indeo5_decoder_select="ividsp"
2737 interplay_video_decoder_select="hpeldsp"
2738 jpegls_decoder_select="mjpeg_decoder"
2739 jv_decoder_select="blockdsp"
2740 lagarith_decoder_select="llviddsp"
2741 ljpeg_encoder_select="idctdsp jpegtables mpegvideoenc"
2742 lscr_decoder_deps="zlib"
2743 magicyuv_decoder_select="llviddsp"
2744 magicyuv_encoder_select="llvidencdsp"
2745 mdec_decoder_select="blockdsp bswapdsp idctdsp mpegvideo"
2746 metasound_decoder_select="lsp mdct sinewin"
2747 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2748 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2749 mjpeg_encoder_select="jpegtables mpegvideoenc"
2750 mjpegb_decoder_select="mjpeg_decoder"
2751 mlp_decoder_select="mlp_parser"
2752 mlp_encoder_select="lpc audio_frame_queue"
2753 motionpixels_decoder_select="bswapdsp"
2754 mp1_decoder_select="mpegaudio"
2755 mp1float_decoder_select="mpegaudio"
2756 mp2_decoder_select="mpegaudio"
2757 mp2float_decoder_select="mpegaudio"
2758 mp3_decoder_select="mpegaudio"
2759 mp3adu_decoder_select="mpegaudio"
2760 mp3adufloat_decoder_select="mpegaudio"
2761 mp3float_decoder_select="mpegaudio"
2762 mp3on4_decoder_select="mpegaudio"
2763 mp3on4float_decoder_select="mpegaudio"
2764 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2765 mpc8_decoder_select="mpegaudiodsp"
2766 mpegvideo_decoder_select="mpegvideo"
2767 mpeg1video_decoder_select="mpegvideo"
2768 mpeg1video_encoder_select="mpegvideoenc h263dsp"
2769 mpeg2video_decoder_select="mpegvideo"
2770 mpeg2video_encoder_select="mpegvideoenc h263dsp"
2771 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2772 mpeg4_encoder_select="h263_encoder"
2773 msa1_decoder_select="mss34dsp"
2774 mscc_decoder_deps="zlib"
2775 msmpeg4v1_decoder_select="h263_decoder"
2776 msmpeg4v2_decoder_select="h263_decoder"
2777 msmpeg4v2_encoder_select="h263_encoder"
2778 msmpeg4v3_decoder_select="h263_decoder"
2779 msmpeg4v3_encoder_select="h263_encoder"
2780 mss2_decoder_select="mpegvideo qpeldsp vc1_decoder"
2781 mts2_decoder_select="mss34dsp"
2782 mwsc_decoder_deps="zlib"
2783 mxpeg_decoder_select="mjpeg_decoder"
2784 nellymoser_decoder_select="mdct sinewin"
2785 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2786 nuv_decoder_select="idctdsp lzo"
2787 on2avc_decoder_select="mdct"
2788 opus_decoder_deps="swresample"
2789 opus_decoder_select="mdct15"
2790 opus_encoder_select="audio_frame_queue mdct15"
2791 png_decoder_deps="zlib"
2792 png_encoder_deps="zlib"
2793 png_encoder_select="llvidencdsp"
2794 prores_decoder_select="blockdsp idctdsp"
2795 prores_encoder_select="fdctdsp"
2796 qcelp_decoder_select="lsp"
2797 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2798 ra_144_decoder_select="audiodsp"
2799 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2800 ralf_decoder_select="golomb"
2801 rasc_decoder_deps="zlib"
2802 rawvideo_decoder_select="bswapdsp"
2803 rscc_decoder_deps="zlib"
2804 rtjpeg_decoder_select="me_cmp"
2805 rv10_decoder_select="h263_decoder"
2806 rv10_encoder_select="h263_encoder"
2807 rv20_decoder_select="h263_decoder"
2808 rv20_encoder_select="h263_encoder"
2809 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2810 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2811 screenpresso_decoder_deps="zlib"
2812 shorten_decoder_select="bswapdsp"
2813 sipr_decoder_select="lsp"
2814 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2815 snow_encoder_select="dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2816 sonic_decoder_select="golomb rangecoder"
2817 sonic_encoder_select="golomb rangecoder"
2818 sonic_ls_encoder_select="golomb rangecoder"
2819 sp5x_decoder_select="mjpeg_decoder"
2820 speedhq_decoder_select="mpegvideo"
2821 srgc_decoder_deps="zlib"
2822 svq1_decoder_select="hpeldsp"
2823 svq1_encoder_select="hpeldsp me_cmp mpegvideoenc"
2824 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2825 svq3_decoder_suggest="zlib"
2826 tak_decoder_select="audiodsp"
2827 tdsc_decoder_deps="zlib"
2828 tdsc_decoder_select="mjpeg_decoder"
2829 theora_decoder_select="vp3_decoder"
2830 thp_decoder_select="mjpeg_decoder"
2831 tiff_decoder_select="mjpeg_decoder"
2832 tiff_decoder_suggest="zlib lzma"
2833 tiff_encoder_suggest="zlib"
2834 truehd_decoder_select="mlp_parser"
2835 truehd_encoder_select="lpc audio_frame_queue"
2836 truemotion2_decoder_select="bswapdsp"
2837 truespeech_decoder_select="bswapdsp"
2838 tscc_decoder_deps="zlib"
2839 twinvq_decoder_select="mdct lsp sinewin"
2840 txd_decoder_select="texturedsp"
2841 utvideo_decoder_select="bswapdsp llviddsp"
2842 utvideo_encoder_select="bswapdsp huffman llvidencdsp"
2843 vble_decoder_select="llviddsp"
2844 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 mpegvideo vc1dsp"
2845 vc1image_decoder_select="vc1_decoder"
2846 vorbis_decoder_select="mdct"
2847 vorbis_encoder_select="audio_frame_queue mdct"
2848 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2849 vp4_decoder_select="vp3_decoder"
2850 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2851 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2852 vp6a_decoder_select="vp6_decoder"
2853 vp6f_decoder_select="vp6_decoder"
2854 vp7_decoder_select="h264pred videodsp vp8dsp"
2855 vp8_decoder_select="h264pred videodsp vp8dsp"
2856 vp9_decoder_select="videodsp vp9_parser vp9_superframe_split_bsf"
2857 wcmv_decoder_deps="zlib"
2858 webp_decoder_select="vp8_decoder exif"
2859 wmalossless_decoder_select="llauddsp"
2860 wmapro_decoder_select="mdct sinewin wma_freqs"
2861 wmav1_decoder_select="mdct sinewin wma_freqs"
2862 wmav1_encoder_select="mdct sinewin wma_freqs"
2863 wmav2_decoder_select="mdct sinewin wma_freqs"
2864 wmav2_encoder_select="mdct sinewin wma_freqs"
2865 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2866 wmv1_decoder_select="h263_decoder"
2867 wmv1_encoder_select="h263_encoder"
2868 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2869 wmv2_encoder_select="h263_encoder wmv2dsp"
2870 wmv3_decoder_select="vc1_decoder"
2871 wmv3image_decoder_select="wmv3_decoder"
2872 xma1_decoder_select="wmapro_decoder"
2873 xma2_decoder_select="wmapro_decoder"
2874 ylc_decoder_select="bswapdsp"
2875 zerocodec_decoder_deps="zlib"
2876 zlib_decoder_deps="zlib"
2877 zlib_encoder_deps="zlib"
2878 zmbv_decoder_deps="zlib"
2879 zmbv_encoder_deps="zlib"
2880
2881 # hardware accelerators
2882 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2883 cuda_deps="ffnvcodec"
2884 cuvid_deps="ffnvcodec"
2885 d3d11va_deps="dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2886 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode ole32 user32"
2887 ffnvcodec_deps_any="libdl LoadLibrary"
2888 nvdec_deps="ffnvcodec"
2889 vaapi_x11_deps="xlib"
2890 videotoolbox_hwaccel_deps="videotoolbox pthreads"
2891 videotoolbox_hwaccel_extralibs="-framework QuartzCore"
2892 xvmc_deps="X11_extensions_XvMClib_h"
2893
2894 h263_vaapi_hwaccel_deps="vaapi"
2895 h263_vaapi_hwaccel_select="h263_decoder"
2896 h263_videotoolbox_hwaccel_deps="videotoolbox"
2897 h263_videotoolbox_hwaccel_select="h263_decoder"
2898 h264_d3d11va_hwaccel_deps="d3d11va"
2899 h264_d3d11va_hwaccel_select="h264_decoder"
2900 h264_d3d11va2_hwaccel_deps="d3d11va"
2901 h264_d3d11va2_hwaccel_select="h264_decoder"
2902 h264_dxva2_hwaccel_deps="dxva2"
2903 h264_dxva2_hwaccel_select="h264_decoder"
2904 h264_nvdec_hwaccel_deps="nvdec"
2905 h264_nvdec_hwaccel_select="h264_decoder"
2906 h264_vaapi_hwaccel_deps="vaapi"
2907 h264_vaapi_hwaccel_select="h264_decoder"
2908 h264_vdpau_hwaccel_deps="vdpau"
2909 h264_vdpau_hwaccel_select="h264_decoder"
2910 h264_videotoolbox_hwaccel_deps="videotoolbox"
2911 h264_videotoolbox_hwaccel_select="h264_decoder"
2912 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2913 hevc_d3d11va_hwaccel_select="hevc_decoder"
2914 hevc_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2915 hevc_d3d11va2_hwaccel_select="hevc_decoder"
2916 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2917 hevc_dxva2_hwaccel_select="hevc_decoder"
2918 hevc_nvdec_hwaccel_deps="nvdec"
2919 hevc_nvdec_hwaccel_select="hevc_decoder"
2920 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2921 hevc_vaapi_hwaccel_select="hevc_decoder"
2922 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2923 hevc_vdpau_hwaccel_select="hevc_decoder"
2924 hevc_videotoolbox_hwaccel_deps="videotoolbox"
2925 hevc_videotoolbox_hwaccel_select="hevc_decoder"
2926 mjpeg_nvdec_hwaccel_deps="nvdec"
2927 mjpeg_nvdec_hwaccel_select="mjpeg_decoder"
2928 mjpeg_vaapi_hwaccel_deps="vaapi"
2929 mjpeg_vaapi_hwaccel_select="mjpeg_decoder"
2930 mpeg_xvmc_hwaccel_deps="xvmc"
2931 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2932 mpeg1_nvdec_hwaccel_deps="nvdec"
2933 mpeg1_nvdec_hwaccel_select="mpeg1video_decoder"
2934 mpeg1_vdpau_hwaccel_deps="vdpau"
2935 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2936 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2937 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2938 mpeg1_xvmc_hwaccel_deps="xvmc"
2939 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2940 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2941 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2942 mpeg2_d3d11va2_hwaccel_deps="d3d11va"
2943 mpeg2_d3d11va2_hwaccel_select="mpeg2video_decoder"
2944 mpeg2_dxva2_hwaccel_deps="dxva2"
2945 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2946 mpeg2_nvdec_hwaccel_deps="nvdec"
2947 mpeg2_nvdec_hwaccel_select="mpeg2video_decoder"
2948 mpeg2_vaapi_hwaccel_deps="vaapi"
2949 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2950 mpeg2_vdpau_hwaccel_deps="vdpau"
2951 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2952 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2953 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2954 mpeg2_xvmc_hwaccel_deps="xvmc"
2955 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2956 mpeg4_nvdec_hwaccel_deps="nvdec"
2957 mpeg4_nvdec_hwaccel_select="mpeg4_decoder"
2958 mpeg4_vaapi_hwaccel_deps="vaapi"
2959 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2960 mpeg4_vdpau_hwaccel_deps="vdpau"
2961 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2962 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2963 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2964 vc1_d3d11va_hwaccel_deps="d3d11va"
2965 vc1_d3d11va_hwaccel_select="vc1_decoder"
2966 vc1_d3d11va2_hwaccel_deps="d3d11va"
2967 vc1_d3d11va2_hwaccel_select="vc1_decoder"
2968 vc1_dxva2_hwaccel_deps="dxva2"
2969 vc1_dxva2_hwaccel_select="vc1_decoder"
2970 vc1_nvdec_hwaccel_deps="nvdec"
2971 vc1_nvdec_hwaccel_select="vc1_decoder"
2972 vc1_vaapi_hwaccel_deps="vaapi"
2973 vc1_vaapi_hwaccel_select="vc1_decoder"
2974 vc1_vdpau_hwaccel_deps="vdpau"
2975 vc1_vdpau_hwaccel_select="vc1_decoder"
2976 vp8_nvdec_hwaccel_deps="nvdec"
2977 vp8_nvdec_hwaccel_select="vp8_decoder"
2978 vp8_vaapi_hwaccel_deps="vaapi"
2979 vp8_vaapi_hwaccel_select="vp8_decoder"
2980 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2981 vp9_d3d11va_hwaccel_select="vp9_decoder"
2982 vp9_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2983 vp9_d3d11va2_hwaccel_select="vp9_decoder"
2984 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
2985 vp9_dxva2_hwaccel_select="vp9_decoder"
2986 vp9_nvdec_hwaccel_deps="nvdec"
2987 vp9_nvdec_hwaccel_select="vp9_decoder"
2988 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9_bit_depth"
2989 vp9_vaapi_hwaccel_select="vp9_decoder"
2990 vp9_vdpau_hwaccel_deps="vdpau VdpPictureInfoVP9"
2991 vp9_vdpau_hwaccel_select="vp9_decoder"
2992 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2993 wmv3_d3d11va2_hwaccel_select="vc1_d3d11va2_hwaccel"
2994 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2995 wmv3_nvdec_hwaccel_select="vc1_nvdec_hwaccel"
2996 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2997 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2998
2999 # hardware-accelerated codecs
3000 omx_deps="libdl pthreads"
3001 omx_rpi_select="omx"
3002 qsv_deps="libmfx"
3003 qsvdec_select="qsv"
3004 qsvenc_select="qsv"
3005 qsvvpp_select="qsv"
3006 vaapi_encode_deps="vaapi"
3007 v4l2_m2m_deps="linux_videodev2_h sem_timedwait"
3008
3009 hwupload_cuda_filter_deps="ffnvcodec"
3010 scale_npp_filter_deps="ffnvcodec libnpp"
3011 scale_cuda_filter_deps="ffnvcodec"
3012 scale_cuda_filter_deps_any="cuda_nvcc cuda_llvm"
3013 thumbnail_cuda_filter_deps="ffnvcodec"
3014 thumbnail_cuda_filter_deps_any="cuda_nvcc cuda_llvm"
3015 transpose_npp_filter_deps="ffnvcodec libnpp"
3016
3017 amf_deps_any="libdl LoadLibrary"
3018 nvenc_deps="ffnvcodec"
3019 nvenc_deps_any="libdl LoadLibrary"
3020 nvenc_encoder_deps="nvenc"
3021
3022 h263_v4l2m2m_decoder_deps="v4l2_m2m h263_v4l2_m2m"
3023 h263_v4l2m2m_encoder_deps="v4l2_m2m h263_v4l2_m2m"
3024 h264_amf_encoder_deps="amf"
3025 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
3026 h264_cuvid_decoder_deps="cuvid"
3027 h264_cuvid_decoder_select="h264_mp4toannexb_bsf"
3028 h264_mediacodec_decoder_deps="mediacodec"
3029 h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
3030 h264_mmal_decoder_deps="mmal"
3031 h264_nvenc_encoder_deps="nvenc"
3032 h264_omx_encoder_deps="omx"
3033 h264_qsv_decoder_select="h264_mp4toannexb_bsf qsvdec"
3034 h264_qsv_encoder_select="qsvenc"
3035 h264_rkmpp_decoder_deps="rkmpp"
3036 h264_rkmpp_decoder_select="h264_mp4toannexb_bsf"
3037 h264_vaapi_encoder_select="cbs_h264 vaapi_encode"
3038 h264_v4l2m2m_decoder_deps="v4l2_m2m h264_v4l2_m2m"
3039 h264_v4l2m2m_decoder_select="h264_mp4toannexb_bsf"
3040 h264_v4l2m2m_encoder_deps="v4l2_m2m h264_v4l2_m2m"
3041 hevc_amf_encoder_deps="amf"
3042 hevc_cuvid_decoder_deps="cuvid"
3043 hevc_cuvid_decoder_select="hevc_mp4toannexb_bsf"
3044 hevc_mediacodec_decoder_deps="mediacodec"
3045 hevc_mediacodec_decoder_select="hevc_mp4toannexb_bsf hevc_parser"
3046 hevc_nvenc_encoder_deps="nvenc"
3047 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf qsvdec"
3048 hevc_qsv_encoder_select="hevcparse qsvenc"
3049 hevc_rkmpp_decoder_deps="rkmpp"
3050 hevc_rkmpp_decoder_select="hevc_mp4toannexb_bsf"
3051 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
3052 hevc_vaapi_encoder_select="cbs_h265 vaapi_encode"
3053 hevc_v4l2m2m_decoder_deps="v4l2_m2m hevc_v4l2_m2m"
3054 hevc_v4l2m2m_decoder_select="hevc_mp4toannexb_bsf"
3055 hevc_v4l2m2m_encoder_deps="v4l2_m2m hevc_v4l2_m2m"
3056 mjpeg_cuvid_decoder_deps="cuvid"
3057 mjpeg_qsv_decoder_select="qsvdec"
3058 mjpeg_qsv_encoder_deps="libmfx"
3059 mjpeg_qsv_encoder_select="qsvenc"
3060 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
3061 mjpeg_vaapi_encoder_select="cbs_jpeg jpegtables vaapi_encode"
3062 mpeg1_cuvid_decoder_deps="cuvid"
3063 mpeg1_v4l2m2m_decoder_deps="v4l2_m2m mpeg1_v4l2_m2m"
3064 mpeg2_crystalhd_decoder_select="crystalhd"
3065 mpeg2_cuvid_decoder_deps="cuvid"
3066 mpeg2_mmal_decoder_deps="mmal"
3067 mpeg2_mediacodec_decoder_deps="mediacodec"
3068 mpeg2_qsv_decoder_select="qsvdec"
3069 mpeg2_qsv_encoder_select="qsvenc"
3070 mpeg2_vaapi_encoder_select="cbs_mpeg2 vaapi_encode"
3071 mpeg2_v4l2m2m_decoder_deps="v4l2_m2m mpeg2_v4l2_m2m"
3072 mpeg4_crystalhd_decoder_select="crystalhd"
3073 mpeg4_cuvid_decoder_deps="cuvid"
3074 mpeg4_mediacodec_decoder_deps="mediacodec"
3075 mpeg4_mmal_decoder_deps="mmal"
3076 mpeg4_omx_encoder_deps="omx"
3077 mpeg4_v4l2m2m_decoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
3078 mpeg4_v4l2m2m_encoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
3079 msmpeg4_crystalhd_decoder_select="crystalhd"
3080 nvenc_h264_encoder_select="h264_nvenc_encoder"
3081 nvenc_hevc_encoder_select="hevc_nvenc_encoder"
3082 vc1_crystalhd_decoder_select="crystalhd"
3083 vc1_cuvid_decoder_deps="cuvid"
3084 vc1_mmal_decoder_deps="mmal"
3085 vc1_qsv_decoder_select="qsvdec"
3086 vc1_v4l2m2m_decoder_deps="v4l2_m2m vc1_v4l2_m2m"
3087 vp8_cuvid_decoder_deps="cuvid"
3088 vp8_mediacodec_decoder_deps="mediacodec"
3089 vp8_qsv_decoder_select="qsvdec"
3090 vp8_rkmpp_decoder_deps="rkmpp"
3091 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
3092 vp8_vaapi_encoder_select="vaapi_encode"
3093 vp8_v4l2m2m_decoder_deps="v4l2_m2m vp8_v4l2_m2m"
3094 vp8_v4l2m2m_encoder_deps="v4l2_m2m vp8_v4l2_m2m"
3095 vp9_cuvid_decoder_deps="cuvid"
3096 vp9_mediacodec_decoder_deps="mediacodec"
3097 vp9_qsv_decoder_select="qsvdec"
3098 vp9_rkmpp_decoder_deps="rkmpp"
3099 vp9_vaapi_encoder_deps="VAEncPictureParameterBufferVP9"
3100 vp9_vaapi_encoder_select="vaapi_encode"
3101 vp9_qsv_encoder_deps="libmfx MFX_CODEC_VP9"
3102 vp9_qsv_encoder_select="qsvenc"
3103 vp9_v4l2m2m_decoder_deps="v4l2_m2m vp9_v4l2_m2m"
3104 wmv3_crystalhd_decoder_select="crystalhd"
3105
3106 # parsers
3107 aac_parser_select="adts_header"
3108 av1_parser_select="cbs_av1"
3109 h264_parser_select="golomb h264dsp h264parse"
3110 hevc_parser_select="hevcparse"
3111 mpegaudio_parser_select="mpegaudioheader"
3112 mpegvideo_parser_select="mpegvideo"
3113 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
3114 vc1_parser_select="vc1dsp"
3115
3116 # bitstream_filters
3117 aac_adtstoasc_bsf_select="adts_header"
3118 av1_frame_merge_bsf_select="cbs_av1"
3119 av1_frame_split_bsf_select="cbs_av1"
3120 av1_metadata_bsf_select="cbs_av1"
3121 eac3_core_bsf_select="ac3_parser"
3122 filter_units_bsf_select="cbs"
3123 h264_metadata_bsf_deps="const_nan"
3124 h264_metadata_bsf_select="cbs_h264"
3125 h264_redundant_pps_bsf_select="cbs_h264"
3126 hevc_metadata_bsf_select="cbs_h265"
3127 mjpeg2jpeg_bsf_select="jpegtables"
3128 mpeg2_metadata_bsf_select="cbs_mpeg2"
3129 trace_headers_bsf_select="cbs"
3130 vp9_metadata_bsf_select="cbs_vp9"
3131
3132 # external libraries
3133 aac_at_decoder_deps="audiotoolbox"
3134 aac_at_decoder_select="aac_adtstoasc_bsf"
3135 ac3_at_decoder_deps="audiotoolbox"
3136 ac3_at_decoder_select="ac3_parser"
3137 adpcm_ima_qt_at_decoder_deps="audiotoolbox"
3138 alac_at_decoder_deps="audiotoolbox"
3139 amr_nb_at_decoder_deps="audiotoolbox"
3140 avisynth_deps_any="libdl LoadLibrary"
3141 avisynth_demuxer_deps="avisynth"
3142 avisynth_demuxer_select="riffdec"
3143 eac3_at_decoder_deps="audiotoolbox"
3144 eac3_at_decoder_select="ac3_parser"
3145 gsm_ms_at_decoder_deps="audiotoolbox"
3146 ilbc_at_decoder_deps="audiotoolbox"
3147 mp1_at_decoder_deps="audiotoolbox"
3148 mp2_at_decoder_deps="audiotoolbox"
3149 mp3_at_decoder_deps="audiotoolbox"
3150 mp1_at_decoder_select="mpegaudioheader"
3151 mp2_at_decoder_select="mpegaudioheader"
3152 mp3_at_decoder_select="mpegaudioheader"
3153 pcm_alaw_at_decoder_deps="audiotoolbox"
3154 pcm_mulaw_at_decoder_deps="audiotoolbox"
3155 qdmc_decoder_select="fft"
3156 qdmc_at_decoder_deps="audiotoolbox"
3157 qdm2_at_decoder_deps="audiotoolbox"
3158 aac_at_encoder_deps="audiotoolbox"
3159 aac_at_encoder_select="audio_frame_queue"
3160 alac_at_encoder_deps="audiotoolbox"
3161 alac_at_encoder_select="audio_frame_queue"
3162 ilbc_at_encoder_deps="audiotoolbox"
3163 ilbc_at_encoder_select="audio_frame_queue"
3164 pcm_alaw_at_encoder_deps="audiotoolbox"
3165 pcm_alaw_at_encoder_select="audio_frame_queue"
3166 pcm_mulaw_at_encoder_deps="audiotoolbox"
3167 pcm_mulaw_at_encoder_select="audio_frame_queue"
3168 chromaprint_muxer_deps="chromaprint"
3169 h264_videotoolbox_encoder_deps="pthreads"
3170 h264_videotoolbox_encoder_select="videotoolbox_encoder"
3171 hevc_videotoolbox_encoder_deps="pthreads"
3172 hevc_videotoolbox_encoder_select="videotoolbox_encoder"
3173 libaom_av1_decoder_deps="libaom"
3174 libaom_av1_encoder_deps="libaom"
3175 libaom_av1_encoder_select="extract_extradata_bsf"
3176 libaribb24_decoder_deps="libaribb24"
3177 libcelt_decoder_deps="libcelt"
3178 libcodec2_decoder_deps="libcodec2"
3179 libcodec2_encoder_deps="libcodec2"
3180 libdav1d_decoder_deps="libdav1d"
3181 libdavs2_decoder_deps="libdavs2"
3182 libfdk_aac_decoder_deps="libfdk_aac"
3183 libfdk_aac_encoder_deps="libfdk_aac"
3184 libfdk_aac_encoder_select="audio_frame_queue"
3185 libgme_demuxer_deps="libgme"
3186 libgsm_decoder_deps="libgsm"
3187 libgsm_encoder_deps="libgsm"
3188 libgsm_ms_decoder_deps="libgsm"
3189 libgsm_ms_encoder_deps="libgsm"
3190 libilbc_decoder_deps="libilbc"
3191 libilbc_encoder_deps="libilbc"
3192 libkvazaar_encoder_deps="libkvazaar"
3193 libmodplug_demuxer_deps="libmodplug"
3194 libmp3lame_encoder_deps="libmp3lame"
3195 libmp3lame_encoder_select="audio_frame_queue mpegaudioheader"
3196 libopencore_amrnb_decoder_deps="libopencore_amrnb"
3197 libopencore_amrnb_encoder_deps="libopencore_amrnb"
3198 libopencore_amrnb_encoder_select="audio_frame_queue"
3199 libopencore_amrwb_decoder_deps="libopencore_amrwb"
3200 libopenh264_decoder_deps="libopenh264"
3201 libopenh264_decoder_select="h264_mp4toannexb_bsf"
3202 libopenh264_encoder_deps="libopenh264"
3203 libopenjpeg_decoder_deps="libopenjpeg"
3204 libopenjpeg_encoder_deps="libopenjpeg"
3205 libopenmpt_demuxer_deps="libopenmpt"
3206 libopus_decoder_deps="libopus"
3207 libopus_encoder_deps="libopus"
3208 libopus_encoder_select="audio_frame_queue"
3209 librav1e_encoder_deps="librav1e"
3210 librav1e_encoder_select="extract_extradata_bsf"
3211 librsvg_decoder_deps="librsvg"
3212 libshine_encoder_deps="libshine"
3213 libshine_encoder_select="audio_frame_queue"
3214 libspeex_decoder_deps="libspeex"
3215 libspeex_encoder_deps="libspeex"
3216 libspeex_encoder_select="audio_frame_queue"
3217 libtheora_encoder_deps="libtheora"
3218 libtwolame_encoder_deps="libtwolame"
3219 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
3220 libvorbis_decoder_deps="libvorbis"
3221 libvorbis_encoder_deps="libvorbis libvorbisenc"
3222 libvorbis_encoder_select="audio_frame_queue"
3223 libvpx_vp8_decoder_deps="libvpx"
3224 libvpx_vp8_encoder_deps="libvpx"
3225 libvpx_vp9_decoder_deps="libvpx"
3226 libvpx_vp9_encoder_deps="libvpx"
3227 libwavpack_encoder_deps="libwavpack"
3228 libwavpack_encoder_select="audio_frame_queue"
3229 libwebp_encoder_deps="libwebp"
3230 libwebp_anim_encoder_deps="libwebp"
3231 libx262_encoder_deps="libx262"
3232 libx264_encoder_deps="libx264"
3233 libx264rgb_encoder_deps="libx264 x264_csp_bgr"
3234 libx264rgb_encoder_select="libx264_encoder"
3235 libx265_encoder_deps="libx265"
3236 libxavs_encoder_deps="libxavs"
3237 libxavs2_encoder_deps="libxavs2"
3238 libxvid_encoder_deps="libxvid"
3239 libzvbi_teletext_decoder_deps="libzvbi"
3240 vapoursynth_demuxer_deps="vapoursynth"
3241 videotoolbox_suggest="coreservices"
3242 videotoolbox_deps="corefoundation coremedia corevideo"
3243 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
3244
3245 # demuxers / muxers
3246 ac3_demuxer_select="ac3_parser"
3247 act_demuxer_select="riffdec"
3248 aiff_muxer_select="iso_media"
3249 asf_demuxer_select="riffdec"
3250 asf_o_demuxer_select="riffdec"
3251 asf_muxer_select="riffenc"
3252 asf_stream_muxer_select="asf_muxer"
3253 av1_demuxer_select="av1_frame_merge_bsf av1_parser"
3254 avi_demuxer_select="iso_media riffdec exif"
3255 avi_muxer_select="riffenc"
3256 caf_demuxer_select="iso_media riffdec"
3257 caf_muxer_select="iso_media"
3258 dash_muxer_select="mp4_muxer"
3259 dash_demuxer_deps="libxml2"
3260 dirac_demuxer_select="dirac_parser"
3261 dts_demuxer_select="dca_parser"
3262 dtshd_demuxer_select="dca_parser"
3263 dv_demuxer_select="dvprofile"
3264 dv_muxer_select="dvprofile"
3265 dxa_demuxer_select="riffdec"
3266 eac3_demuxer_select="ac3_parser"
3267 f4v_muxer_select="mov_muxer"
3268 fifo_muxer_deps="threads"
3269 flac_demuxer_select="flac_parser"
3270 hds_muxer_select="flv_muxer"
3271 hls_muxer_select="mpegts_muxer"
3272 hls_muxer_suggest="gcrypt openssl"
3273 image2_alias_pix_demuxer_select="image2_demuxer"
3274 image2_brender_pix_demuxer_select="image2_demuxer"
3275 ipod_muxer_select="mov_muxer"
3276 ismv_muxer_select="mov_muxer"
3277 ivf_muxer_select="av1_metadata_bsf vp9_superframe_bsf"
3278 matroska_audio_muxer_select="matroska_muxer"
3279 matroska_demuxer_select="iso_media riffdec"
3280 matroska_demuxer_suggest="bzlib lzo zlib"
3281 matroska_muxer_select="iso_media riffenc"
3282 mmf_muxer_select="riffenc"
3283 mov_demuxer_select="iso_media riffdec"
3284 mov_demuxer_suggest="zlib"
3285 mov_muxer_select="iso_media riffenc rtpenc_chain"
3286 mp3_demuxer_select="mpegaudio_parser"
3287 mp3_muxer_select="mpegaudioheader"
3288 mp4_muxer_select="mov_muxer"
3289 mpegts_demuxer_select="iso_media"
3290 mpegts_muxer_select="adts_muxer latm_muxer"
3291 mpegtsraw_demuxer_select="mpegts_demuxer"
3292 mxf_muxer_select="golomb"
3293 mxf_d10_muxer_select="mxf_muxer"
3294 mxf_opatom_muxer_select="mxf_muxer"
3295 nut_muxer_select="riffenc"
3296 nuv_demuxer_select="riffdec"
3297 oga_muxer_select="ogg_muxer"
3298 ogg_demuxer_select="dirac_parse"
3299 ogv_muxer_select="ogg_muxer"
3300 opus_muxer_select="ogg_muxer"
3301 psp_muxer_select="mov_muxer"
3302 rtp_demuxer_select="sdp_demuxer"
3303 rtp_muxer_select="golomb jpegtables"
3304 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
3305 rtsp_demuxer_select="http_protocol rtpdec"
3306 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
3307 sap_demuxer_select="sdp_demuxer"
3308 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
3309 sdp_demuxer_select="rtpdec"
3310 smoothstreaming_muxer_select="ismv_muxer"
3311 spdif_demuxer_select="adts_header"
3312 spdif_muxer_select="adts_header"
3313 spx_muxer_select="ogg_muxer"
3314 swf_demuxer_suggest="zlib"
3315 tak_demuxer_select="tak_parser"
3316 tg2_muxer_select="mov_muxer"
3317 tgp_muxer_select="mov_muxer"
3318 vobsub_demuxer_select="mpegps_demuxer"
3319 w64_demuxer_select="wav_demuxer"
3320 w64_muxer_select="wav_muxer"
3321 wav_demuxer_select="riffdec"
3322 wav_muxer_select="riffenc"
3323 webm_muxer_select="iso_media riffenc"
3324 webm_dash_manifest_demuxer_select="matroska_demuxer"
3325 wtv_demuxer_select="mpegts_demuxer riffdec"
3326 wtv_muxer_select="mpegts_muxer riffenc"
3327 xmv_demuxer_select="riffdec"
3328 xwma_demuxer_select="riffdec"
3329
3330 # indevs / outdevs
3331 android_camera_indev_deps="android camera2ndk mediandk pthreads"
3332 android_camera_indev_extralibs="-landroid -lcamera2ndk -lmediandk"
3333 alsa_indev_deps="alsa"
3334 alsa_outdev_deps="alsa"
3335 avfoundation_indev_deps="avfoundation corevideo coremedia pthreads"
3336 avfoundation_indev_suggest="coregraphics applicationservices"
3337 avfoundation_indev_extralibs="-framework Foundation"
3338 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
3339 caca_outdev_deps="libcaca"
3340 decklink_deps_any="libdl LoadLibrary"
3341 decklink_indev_deps="decklink threads"
3342 decklink_indev_extralibs="-lstdc++"
3343 decklink_outdev_deps="decklink threads"
3344 decklink_outdev_suggest="libklvanc"
3345 decklink_outdev_extralibs="-lstdc++"
3346 dshow_indev_deps="IBaseFilter"
3347 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
3348 fbdev_indev_deps="linux_fb_h"
3349 fbdev_outdev_deps="linux_fb_h"
3350 gdigrab_indev_deps="CreateDIBSection"
3351 gdigrab_indev_extralibs="-lgdi32"
3352 gdigrab_indev_select="bmp_decoder"
3353 iec61883_indev_deps="libiec61883"
3354 jack_indev_deps="libjack"
3355 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
3356 kmsgrab_indev_deps="libdrm"
3357 lavfi_indev_deps="avfilter"
3358 libcdio_indev_deps="libcdio"
3359 libdc1394_indev_deps="libdc1394"
3360 openal_indev_deps="openal"
3361 opengl_outdev_deps="opengl"
3362 opengl_outdev_suggest="sdl2"
3363 oss_indev_deps_any="sys_soundcard_h"
3364 oss_outdev_deps_any="sys_soundcard_h"
3365 pulse_indev_deps="libpulse"
3366 pulse_outdev_deps="libpulse"
3367 sdl2_outdev_deps="sdl2"
3368 sndio_indev_deps="sndio"
3369 sndio_outdev_deps="sndio"
3370 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
3371 v4l2_indev_suggest="libv4l2"
3372 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
3373 v4l2_outdev_suggest="libv4l2"
3374 vfwcap_indev_deps="vfw32 vfwcap_defines"
3375 xcbgrab_indev_deps="libxcb"
3376 xcbgrab_indev_suggest="libxcb_shm libxcb_shape libxcb_xfixes"
3377 xv_outdev_deps="xlib"
3378
3379 # protocols
3380 async_protocol_deps="threads"
3381 bluray_protocol_deps="libbluray"
3382 ffrtmpcrypt_protocol_conflict="librtmp_protocol"
3383 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl mbedtls"
3384 ffrtmpcrypt_protocol_select="tcp_protocol"
3385 ffrtmphttp_protocol_conflict="librtmp_protocol"
3386 ffrtmphttp_protocol_select="http_protocol"
3387 ftp_protocol_select="tcp_protocol"
3388 gopher_protocol_select="network"
3389 http_protocol_select="tcp_protocol"
3390 http_protocol_suggest="zlib"
3391 httpproxy_protocol_select="tcp_protocol"
3392 httpproxy_protocol_suggest="zlib"
3393 https_protocol_select="tls_protocol"
3394 https_protocol_suggest="zlib"
3395 icecast_protocol_select="http_protocol"
3396 mmsh_protocol_select="http_protocol"
3397 mmst_protocol_select="network"
3398 rtmp_protocol_conflict="librtmp_protocol"
3399 rtmp_protocol_select="tcp_protocol"
3400 rtmp_protocol_suggest="zlib"
3401 rtmpe_protocol_select="ffrtmpcrypt_protocol"
3402 rtmpe_protocol_suggest="zlib"
3403 rtmps_protocol_conflict="librtmp_protocol"
3404 rtmps_protocol_select="tls_protocol"
3405 rtmps_protocol_suggest="zlib"
3406 rtmpt_protocol_select="ffrtmphttp_protocol"
3407 rtmpt_protocol_suggest="zlib"
3408 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
3409 rtmpte_protocol_suggest="zlib"
3410 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
3411 rtmpts_protocol_suggest="zlib"
3412 rtp_protocol_select="udp_protocol"
3413 schannel_conflict="openssl gnutls libtls mbedtls"
3414 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
3415 sctp_protocol_select="network"
3416 securetransport_conflict="openssl gnutls libtls mbedtls"
3417 srtp_protocol_select="rtp_protocol srtp"
3418 tcp_protocol_select="network"
3419 tls_protocol_deps_any="gnutls openssl schannel securetransport libtls mbedtls"
3420 tls_protocol_select="tcp_protocol"
3421 udp_protocol_select="network"
3422 udplite_protocol_select="network"
3423 unix_protocol_deps="sys_un_h"
3424 unix_protocol_select="network"
3425
3426 # external library protocols
3427 librtmp_protocol_deps="librtmp"
3428 librtmpe_protocol_deps="librtmp"
3429 librtmps_protocol_deps="librtmp"
3430 librtmpt_protocol_deps="librtmp"
3431 librtmpte_protocol_deps="librtmp"
3432 libsmbclient_protocol_deps="libsmbclient gplv3"
3433 libsrt_protocol_deps="libsrt"
3434 libsrt_protocol_select="network"
3435 libssh_protocol_deps="libssh"
3436 libtls_conflict="openssl gnutls mbedtls"
3437 libzmq_protocol_deps="libzmq"
3438 libzmq_protocol_select="network"
3439
3440 # filters
3441 afftdn_filter_deps="avcodec"
3442 afftdn_filter_select="fft"
3443 afftfilt_filter_deps="avcodec"
3444 afftfilt_filter_select="fft"
3445 afir_filter_deps="avcodec"
3446 afir_filter_select="rdft"
3447 amovie_filter_deps="avcodec avformat"
3448 aresample_filter_deps="swresample"
3449 asr_filter_deps="pocketsphinx"
3450 ass_filter_deps="libass"
3451 atempo_filter_deps="avcodec"
3452 atempo_filter_select="rdft"
3453 avgblur_opencl_filter_deps="opencl"
3454 azmq_filter_deps="libzmq"
3455 blackframe_filter_deps="gpl"
3456 bm3d_filter_deps="avcodec"
3457 bm3d_filter_select="dct"
3458 boxblur_filter_deps="gpl"
3459 boxblur_opencl_filter_deps="opencl gpl"
3460 bs2b_filter_deps="libbs2b"
3461 colorkey_opencl_filter_deps="opencl"
3462 colormatrix_filter_deps="gpl"
3463 convolution_opencl_filter_deps="opencl"
3464 convolve_filter_deps="avcodec"
3465 convolve_filter_select="fft"
3466 coreimage_filter_deps="coreimage appkit"
3467 coreimage_filter_extralibs="-framework OpenGL"
3468 coreimagesrc_filter_deps="coreimage appkit"
3469 coreimagesrc_filter_extralibs="-framework OpenGL"
3470 cover_rect_filter_deps="avcodec avformat gpl"
3471 cropdetect_filter_deps="gpl"
3472 deconvolve_filter_deps="avcodec"
3473 deconvolve_filter_select="fft"
3474 deinterlace_qsv_filter_deps="libmfx"
3475 deinterlace_vaapi_filter_deps="vaapi"
3476 delogo_filter_deps="gpl"
3477 denoise_vaapi_filter_deps="vaapi"
3478 derain_filter_select="dnn"
3479 deshake_filter_select="pixelutils"
3480 deshake_opencl_filter_deps="opencl"
3481 dilation_opencl_filter_deps="opencl"
3482 dnn_processing_filter_select="dnn"
3483 drawtext_filter_deps="libfreetype"
3484 drawtext_filter_suggest="libfontconfig libfribidi"
3485 elbg_filter_deps="avcodec"
3486 eq_filter_deps="gpl"
3487 erosion_opencl_filter_deps="opencl"
3488 fftfilt_filter_deps="avcodec"
3489 fftfilt_filter_select="rdft"
3490 fftdnoiz_filter_deps="avcodec"
3491 fftdnoiz_filter_select="fft"
3492 find_rect_filter_deps="avcodec avformat gpl"
3493 firequalizer_filter_deps="avcodec"
3494 firequalizer_filter_select="rdft"
3495 flite_filter_deps="libflite"
3496 framerate_filter_select="scene_sad"
3497 freezedetect_filter_select="scene_sad"
3498 frei0r_filter_deps="frei0r libdl"
3499 frei0r_src_filter_deps="frei0r libdl"
3500 fspp_filter_deps="gpl"
3501 geq_filter_deps="gpl"
3502 headphone_filter_select="fft"
3503 histeq_filter_deps="gpl"
3504 hqdn3d_filter_deps="gpl"
3505 interlace_filter_deps="gpl"
3506 kerndeint_filter_deps="gpl"
3507 ladspa_filter_deps="ladspa libdl"
3508 lensfun_filter_deps="liblensfun version3"
3509 lv2_filter_deps="lv2"
3510 mcdeint_filter_deps="avcodec gpl"
3511 movie_filter_deps="avcodec avformat"
3512 mpdecimate_filter_deps="gpl"
3513 mpdecimate_filter_select="pixelutils"
3514 minterpolate_filter_select="scene_sad"
3515 mptestsrc_filter_deps="gpl"
3516 negate_filter_deps="lut_filter"
3517 nlmeans_opencl_filter_deps="opencl"
3518 nnedi_filter_deps="gpl"
3519 ocr_filter_deps="libtesseract"
3520 ocv_filter_deps="libopencv"
3521 openclsrc_filter_deps="opencl"
3522 overlay_opencl_filter_deps="opencl"
3523 overlay_qsv_filter_deps="libmfx"
3524 overlay_qsv_filter_select="qsvvpp"
3525 owdenoise_filter_deps="gpl"
3526 pan_filter_deps="swresample"
3527 perspective_filter_deps="gpl"
3528 phase_filter_deps="gpl"
3529 pp7_filter_deps="gpl"
3530 pp_filter_deps="gpl postproc"
3531 prewitt_opencl_filter_deps="opencl"
3532 procamp_vaapi_filter_deps="vaapi"
3533 program_opencl_filter_deps="opencl"
3534 pullup_filter_deps="gpl"
3535 removelogo_filter_deps="avcodec avformat swscale"
3536 repeatfields_filter_deps="gpl"
3537 resample_filter_deps="avresample"
3538 roberts_opencl_filter_deps="opencl"
3539 rubberband_filter_deps="librubberband"
3540 sab_filter_deps="gpl swscale"
3541 scale2ref_filter_deps="swscale"
3542 scale_filter_deps="swscale"
3543 scale_qsv_filter_deps="libmfx"
3544 select_filter_select="scene_sad"
3545 sharpness_vaapi_filter_deps="vaapi"
3546 showcqt_filter_deps="avcodec avformat swscale"
3547 showcqt_filter_suggest="libfontconfig libfreetype"
3548 showcqt_filter_select="fft"
3549 showfreqs_filter_deps="avcodec"
3550 showfreqs_filter_select="fft"
3551 showspatial_filter_select="fft"
3552 showspectrum_filter_deps="avcodec"
3553 showspectrum_filter_select="fft"
3554 showspectrumpic_filter_deps="avcodec"
3555 showspectrumpic_filter_select="fft"
3556 signature_filter_deps="gpl avcodec avformat"
3557 sinc_filter_select="rdft"
3558 smartblur_filter_deps="gpl swscale"
3559 sobel_opencl_filter_deps="opencl"
3560 sofalizer_filter_deps="libmysofa avcodec"
3561 sofalizer_filter_select="fft"
3562 spectrumsynth_filter_deps="avcodec"
3563 spectrumsynth_filter_select="fft"
3564 spp_filter_deps="gpl avcodec"
3565 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3566 sr_filter_deps="avformat swscale"
3567 sr_filter_select="dnn"
3568 stereo3d_filter_deps="gpl"
3569 subtitles_filter_deps="avformat avcodec libass"
3570 super2xsai_filter_deps="gpl"
3571 pixfmts_super2xsai_test_deps="super2xsai_filter"
3572 superequalizer_filter_select="rdft"
3573 surround_filter_select="rdft"
3574 tinterlace_filter_deps="gpl"
3575 tinterlace_merge_test_deps="tinterlace_filter"
3576 tinterlace_pad_test_deps="tinterlace_filter"
3577 tonemap_filter_deps="const_nan"
3578 tonemap_opencl_filter_deps="opencl const_nan"
3579 transpose_opencl_filter_deps="opencl"
3580 transpose_vaapi_filter_deps="vaapi VAProcPipelineCaps_rotation_flags"
3581 unsharp_opencl_filter_deps="opencl"
3582 uspp_filter_deps="gpl avcodec"
3583 vaguedenoiser_filter_deps="gpl"
3584 vidstabdetect_filter_deps="libvidstab"
3585 vidstabtransform_filter_deps="libvidstab"
3586 libvmaf_filter_deps="libvmaf pthreads"
3587 zmq_filter_deps="libzmq"
3588 zoompan_filter_deps="swscale"
3589 zscale_filter_deps="libzimg const_nan"
3590 scale_vaapi_filter_deps="vaapi"
3591 vpp_qsv_filter_deps="libmfx"
3592 vpp_qsv_filter_select="qsvvpp"
3593 yadif_cuda_filter_deps="ffnvcodec"
3594 yadif_cuda_filter_deps_any="cuda_nvcc cuda_llvm"
3595
3596 # examples
3597 avio_dir_cmd_deps="avformat avutil"
3598 avio_reading_deps="avformat avcodec avutil"
3599 decode_audio_example_deps="avcodec avutil"
3600 decode_video_example_deps="avcodec avutil"
3601 demuxing_decoding_example_deps="avcodec avformat avutil"
3602 encode_audio_example_deps="avcodec avutil"
3603 encode_video_example_deps="avcodec avutil"
3604 extract_mvs_example_deps="avcodec avformat avutil"
3605 filter_audio_example_deps="avfilter avutil"
3606 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3607 filtering_video_example_deps="avfilter avcodec avformat avutil"
3608 http_multiclient_example_deps="avformat avutil fork"
3609 hw_decode_example_deps="avcodec avformat avutil"
3610 metadata_example_deps="avformat avutil"
3611 muxing_example_deps="avcodec avformat avutil swscale"
3612 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
3613 remuxing_example_deps="avcodec avformat avutil"
3614 resampling_audio_example_deps="avutil swresample"
3615 scaling_video_example_deps="avutil swscale"
3616 transcode_aac_example_deps="avcodec avformat swresample"
3617 transcoding_example_deps="avfilter avcodec avformat avutil"
3618 vaapi_encode_example_deps="avcodec avutil h264_vaapi_encoder"
3619 vaapi_transcode_example_deps="avcodec avformat avutil h264_vaapi_encoder"
3620
3621 # EXTRALIBS_LIST
3622 cpu_init_extralibs="pthreads_extralibs"
3623 cws2fws_extralibs="zlib_extralibs"
3624
3625 # libraries, in any order
3626 avcodec_deps="avutil"
3627 avcodec_suggest="libm"
3628 avcodec_select="null_bsf"
3629 avdevice_deps="avformat avcodec avutil"
3630 avdevice_suggest="libm"
3631 avfilter_deps="avutil"
3632 avfilter_suggest="libm"
3633 avformat_deps="avcodec avutil"
3634 avformat_suggest="libm network zlib"
3635 avresample_deps="avutil"
3636 avresample_suggest="libm"
3637 avutil_suggest="clock_gettime ffnvcodec libm libdrm libmfx opencl user32 vaapi videotoolbox corefoundation corevideo coremedia bcrypt"
3638 postproc_deps="avutil gpl"
3639 postproc_suggest="libm"
3640 swresample_deps="avutil"
3641 swresample_suggest="libm libsoxr"
3642 swscale_deps="avutil"
3643 swscale_suggest="libm"
3644
3645 avcodec_extralibs="pthreads_extralibs iconv_extralibs dxva2_extralibs"
3646 avfilter_extralibs="pthreads_extralibs"
3647 avutil_extralibs="d3d11va_extralibs nanosleep_extralibs pthreads_extralibs vaapi_drm_extralibs vaapi_x11_extralibs vdpau_x11_extralibs"
3648
3649 # programs
3650 ffmpeg_deps="avcodec avfilter avformat"
3651 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3652                hflip_filter null_filter
3653                transpose_filter trim_filter vflip_filter"
3654 ffmpeg_suggest="ole32 psapi shell32"
3655 ffplay_deps="avcodec avformat swscale swresample sdl2"
3656 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3657 ffplay_suggest="shell32"
3658 ffprobe_deps="avcodec avformat"
3659 ffprobe_suggest="shell32"
3660
3661 # documentation
3662 podpages_deps="perl"
3663 manpages_deps="perl pod2man"
3664 htmlpages_deps="perl"
3665 htmlpages_deps_any="makeinfo_html texi2html"
3666 txtpages_deps="perl makeinfo"
3667 doc_deps_any="manpages htmlpages podpages txtpages"
3668
3669 # default parameters
3670
3671 logfile="ffbuild/config.log"
3672
3673 # installation paths
3674 prefix_default="/usr/local"
3675 bindir_default='${prefix}/bin'
3676 datadir_default='${prefix}/share/ffmpeg'
3677 docdir_default='${prefix}/share/doc/ffmpeg'
3678 incdir_default='${prefix}/include'
3679 libdir_default='${prefix}/lib'
3680 mandir_default='${prefix}/share/man'
3681
3682 # toolchain
3683 ar_default="ar"
3684 cc_default="gcc"
3685 cxx_default="g++"
3686 host_cc_default="gcc"
3687 doxygen_default="doxygen"
3688 install="install"
3689 ln_s_default="ln -s -f"
3690 nm_default="nm -g"
3691 pkg_config_default=pkg-config
3692 ranlib_default="ranlib"
3693 strip_default="strip"
3694 version_script='--version-script'
3695 objformat="elf32"
3696 x86asmexe_default="nasm"
3697 windres_default="windres"
3698 striptype="direct"
3699
3700 # OS
3701 target_os_default=$(tolower $(uname -s))
3702 host_os=$target_os_default
3703
3704 # machine
3705 if test "$target_os_default" = aix; then
3706     arch_default=$(uname -p)
3707     strip_default="strip -X32_64"
3708     nm_default="nm -g -X32_64"
3709 else
3710     arch_default=$(uname -m)
3711 fi
3712 cpu="generic"
3713 intrinsics="none"
3714
3715 # configurable options
3716 enable $PROGRAM_LIST
3717 enable $DOCUMENT_LIST
3718 enable $EXAMPLE_LIST
3719 enable $(filter_out avresample $LIBRARY_LIST)
3720 enable stripping
3721
3722 enable asm
3723 enable debug
3724 enable doc
3725 enable faan faandct faanidct
3726 enable optimizations
3727 enable runtime_cpudetect
3728 enable safe_bitstream_reader
3729 enable static
3730 enable swscale_alpha
3731 enable valgrind_backtrace
3732
3733 sws_max_filter_size_default=256
3734 set_default sws_max_filter_size
3735
3736 # internal components are enabled by default
3737 enable $EXTRALIBS_LIST
3738
3739 # Avoid external, non-system, libraries getting enabled by dependency resolution
3740 disable $EXTERNAL_LIBRARY_LIST $HWACCEL_LIBRARY_LIST
3741
3742 # build settings
3743 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3744 LIBPREF="lib"
3745 LIBSUF=".a"
3746 FULLNAME='$(NAME)$(BUILDSUF)'
3747 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3748 SLIBPREF="lib"
3749 SLIBSUF=".so"
3750 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3751 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3752 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3753 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3754 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3755 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3756 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
3757
3758 asflags_filter=echo
3759 cflags_filter=echo
3760 ldflags_filter=echo
3761
3762 AS_C='-c'
3763 AS_O='-o $@'
3764 CC_C='-c'
3765 CC_E='-E -o $@'
3766 CC_O='-o $@'
3767 CXX_C='-c'
3768 CXX_O='-o $@'
3769 OBJCC_C='-c'
3770 OBJCC_E='-E -o $@'
3771 OBJCC_O='-o $@'
3772 X86ASM_O='-o $@'
3773 LD_O='-o $@'
3774 LD_LIB='-l%'
3775 LD_PATH='-L'
3776 HOSTCC_C='-c'
3777 HOSTCC_E='-E -o $@'
3778 HOSTCC_O='-o $@'
3779 HOSTLD_O='-o $@'
3780 NVCC_C='-c'
3781 NVCC_O='-o $@'
3782
3783 host_extralibs='-lm'
3784 host_cflags_filter=echo
3785 host_ldflags_filter=echo
3786
3787 target_path='$(CURDIR)'
3788
3789 # since the object filename is not given with the -MM flag, the compiler
3790 # is only able to print the basename, and we must add the path ourselves
3791 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3792 DEPFLAGS='-MM'
3793
3794 mkdir -p ffbuild
3795
3796 # find source path
3797 if test -f configure; then
3798     source_path=.
3799 elif test -f src/configure; then
3800     source_path=src
3801 else
3802     source_path=$(cd $(dirname "$0"); pwd)
3803     case "$source_path" in
3804         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3805     esac
3806     test -e "$source_path/config.h" &&
3807         die "Out of tree builds are impossible with config.h in source dir."
3808 fi
3809
3810 for v in "$@"; do
3811     r=${v#*=}
3812     l=${v%"$r"}
3813     r=$(sh_quote "$r")
3814     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3815 done
3816
3817 find_things_extern(){
3818     thing=$1
3819     pattern=$2
3820     file=$source_path/$3
3821     out=${4:-$thing}
3822     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$out/p" "$file"
3823 }
3824
3825 find_filters_extern(){
3826     file=$source_path/$1
3827     sed -n 's/^extern AVFilter ff_[avfsinkrc]\{2,5\}_\([[:alnum:]_]\{1,\}\);/\1_filter/p' $file
3828 }
3829
3830 FILTER_LIST=$(find_filters_extern libavfilter/allfilters.c)
3831 OUTDEV_LIST=$(find_things_extern muxer AVOutputFormat libavdevice/alldevices.c outdev)
3832 INDEV_LIST=$(find_things_extern demuxer AVInputFormat libavdevice/alldevices.c indev)
3833 MUXER_LIST=$(find_things_extern muxer AVOutputFormat libavformat/allformats.c)
3834 DEMUXER_LIST=$(find_things_extern demuxer AVInputFormat libavformat/allformats.c)
3835 ENCODER_LIST=$(find_things_extern encoder AVCodec libavcodec/allcodecs.c)
3836 DECODER_LIST=$(find_things_extern decoder AVCodec libavcodec/allcodecs.c)
3837 CODEC_LIST="
3838     $ENCODER_LIST
3839     $DECODER_LIST
3840 "
3841 PARSER_LIST=$(find_things_extern parser AVCodecParser libavcodec/parsers.c)
3842 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3843 HWACCEL_LIST=$(find_things_extern hwaccel AVHWAccel libavcodec/hwaccels.h)
3844 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3845
3846 AVCODEC_COMPONENTS_LIST="
3847     $BSF_LIST
3848     $DECODER_LIST
3849     $ENCODER_LIST
3850     $HWACCEL_LIST
3851     $PARSER_LIST
3852 "
3853
3854 AVDEVICE_COMPONENTS_LIST="
3855     $INDEV_LIST
3856     $OUTDEV_LIST
3857 "
3858
3859 AVFILTER_COMPONENTS_LIST="
3860     $FILTER_LIST
3861 "
3862
3863 AVFORMAT_COMPONENTS_LIST="
3864     $DEMUXER_LIST
3865     $MUXER_LIST
3866     $PROTOCOL_LIST
3867 "
3868
3869 ALL_COMPONENTS="
3870     $AVCODEC_COMPONENTS_LIST
3871     $AVDEVICE_COMPONENTS_LIST
3872     $AVFILTER_COMPONENTS_LIST
3873     $AVFORMAT_COMPONENTS_LIST
3874 "
3875
3876 for n in $COMPONENT_LIST; do
3877     v=$(toupper ${n%s})_LIST
3878     eval enable \$$v
3879     eval ${n}_if_any="\$$v"
3880 done
3881
3882 enable $ARCH_EXT_LIST
3883
3884 die_unknown(){
3885     echo "Unknown option \"$1\"."
3886     echo "See $0 --help for available options."
3887     exit 1
3888 }
3889
3890 print_in_columns() {
3891     tr ' ' '\n' | sort | tr '\r\n' '  ' | awk -v col_width=24 -v width="$ncols" '
3892     {
3893         num_cols = width > col_width ? int(width / col_width) : 1;
3894         num_rows = int((NF + num_cols-1) / num_cols);
3895         y = x = 1;
3896         for (y = 1; y <= num_rows; y++) {
3897             i = y;
3898             for (x = 1; x <= num_cols; x++) {
3899                 if (i <= NF) {
3900                   line = sprintf("%s%-" col_width "s", line, $i);
3901                 }
3902                 i = i + num_rows;
3903             }
3904             print line; line = "";
3905         }
3906     }' | sed 's/ *$//'
3907 }
3908
3909 show_list() {
3910     suffix=_$1
3911     shift
3912     echo $* | sed s/$suffix//g | print_in_columns
3913     exit 0
3914 }
3915
3916 rand_list(){
3917     IFS=', '
3918     set -- $*
3919     unset IFS
3920     for thing; do
3921         comp=${thing%:*}
3922         prob=${thing#$comp}
3923         prob=${prob#:}
3924         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3925         echo "prob ${prob:-0.5}"
3926         printf '%s\n' $comp
3927     done
3928 }
3929
3930 do_random(){
3931     action=$1
3932     shift
3933     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3934     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3935 }
3936
3937 for opt do
3938     optval="${opt#*=}"
3939     case "$opt" in
3940         --extra-ldflags=*)
3941             add_ldflags $optval
3942         ;;
3943         --extra-ldexeflags=*)
3944             add_ldexeflags $optval
3945         ;;
3946         --extra-ldsoflags=*)
3947             add_ldsoflags $optval
3948         ;;
3949         --extra-ldlibflags=*)
3950             warn "The --extra-ldlibflags option is only provided for compatibility and will be\n"\
3951                  "removed in the future. Use --extra-ldsoflags instead."
3952             add_ldsoflags $optval
3953         ;;
3954         --extra-libs=*)
3955             add_extralibs $optval
3956         ;;
3957         --disable-devices)
3958             disable $INDEV_LIST $OUTDEV_LIST
3959         ;;
3960         --enable-debug=*)
3961             debuglevel="$optval"
3962         ;;
3963         --disable-programs)
3964             disable $PROGRAM_LIST
3965         ;;
3966         --disable-everything)
3967             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3968         ;;
3969         --disable-all)
3970             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3971             disable $LIBRARY_LIST $PROGRAM_LIST doc
3972             enable avutil
3973         ;;
3974         --enable-random|--disable-random)
3975             action=${opt%%-random}
3976             do_random ${action#--} $COMPONENT_LIST
3977         ;;
3978         --enable-random=*|--disable-random=*)
3979             action=${opt%%-random=*}
3980             do_random ${action#--} $optval
3981         ;;
3982         --enable-sdl)
3983             enable sdl2
3984         ;;
3985         --enable-*=*|--disable-*=*)
3986             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3987             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3988             eval list=\$$(toupper $thing)_LIST
3989             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3990             list=$(filter "$name" $list)
3991             [ "$list" = "" ] && warn "Option $opt did not match anything"
3992             test $action = enable && warn_if_gets_disabled $list
3993             $action $list
3994         ;;
3995         --enable-yasm|--disable-yasm)
3996             warn "The ${opt} option is only provided for compatibility and will be\n"\
3997                  "removed in the future. Use --enable-x86asm / --disable-x86asm instead."
3998             test $opt = --enable-yasm && x86asm=yes || x86asm=no
3999         ;;
4000         --yasmexe=*)
4001             warn "The --yasmexe option is only provided for compatibility and will be\n"\
4002                  "removed in the future. Use --x86asmexe instead."
4003             x86asmexe="$optval"
4004         ;;
4005         --enable-?*|--disable-?*)
4006             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
4007             if is_in $option $COMPONENT_LIST; then
4008                 test $action = disable && action=unset
4009                 eval $action \$$(toupper ${option%s})_LIST
4010             elif is_in $option $CMDLINE_SELECT; then
4011                 $action $option
4012             else
4013                 die_unknown $opt
4014             fi
4015         ;;
4016         --list-*)
4017             NAME="${opt#--list-}"
4018             is_in $NAME $COMPONENT_LIST || die_unknown $opt
4019             NAME=${NAME%s}
4020             eval show_list $NAME \$$(toupper $NAME)_LIST
4021         ;;
4022         --help|-h) show_help
4023         ;;
4024         --quiet|-q) quiet=yes
4025         ;;
4026         --fatal-warnings) enable fatal_warnings
4027         ;;
4028         --libfuzzer=*)
4029             libfuzzer_path="$optval"
4030         ;;
4031         *)
4032             optname="${opt%%=*}"
4033             optname="${optname#--}"
4034             optname=$(echo "$optname" | sed 's/-/_/g')
4035             if is_in $optname $CMDLINE_SET; then
4036                 eval $optname='$optval'
4037             elif is_in $optname $CMDLINE_APPEND; then
4038                 append $optname "$optval"
4039             else
4040                 die_unknown $opt
4041             fi
4042         ;;
4043     esac
4044 done
4045
4046 for e in $env; do
4047     eval "export $e"
4048 done
4049
4050 if disabled autodetect; then
4051
4052     # Unless iconv is explicitely disabled by the user, we still want to probe
4053     # for the iconv from the libc.
4054     disabled iconv || enable libc_iconv
4055
4056     disable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
4057     disable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
4058 fi
4059 # Mark specifically enabled, but normally autodetected libraries as requested.
4060 for lib in $AUTODETECT_LIBS; do
4061     enabled $lib && request $lib
4062 done
4063 #TODO: switch to $AUTODETECT_LIBS when $THREADS_LIST is supported the same way
4064 enable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
4065 enable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
4066
4067 disabled logging && logfile=/dev/null
4068
4069 # command line configuration sanity checks
4070
4071 # we need to build at least one lib type
4072 if ! enabled_any static shared; then
4073     cat <<EOF
4074 At least one library type must be built.
4075 Specify --enable-static to build the static libraries or --enable-shared to
4076 build the shared libraries as well. To only build the shared libraries specify
4077 --disable-static in addition to --enable-shared.
4078 EOF
4079     exit 1
4080 fi
4081
4082 die_license_disabled() {
4083     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
4084 }
4085
4086 die_license_disabled_gpl() {
4087     enabled $1 || { enabled $v && die "$v is incompatible with the gpl and --enable-$1 is not specified."; }
4088 }
4089
4090 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
4091 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
4092
4093 enabled gpl && map "die_license_disabled_gpl nonfree" $EXTERNAL_LIBRARY_NONFREE_LIST
4094 map "die_license_disabled nonfree" $HWACCEL_LIBRARY_NONFREE_LIST
4095
4096 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
4097
4098 if enabled nonfree; then
4099     license="nonfree and unredistributable"
4100 elif enabled gplv3; then
4101     license="GPL version 3 or later"
4102 elif enabled lgplv3; then
4103     license="LGPL version 3 or later"
4104 elif enabled gpl; then
4105     license="GPL version 2 or later"
4106 else
4107     license="LGPL version 2.1 or later"
4108 fi
4109
4110 enabled_all gnutls openssl &&
4111     die "GnuTLS and OpenSSL must not be enabled at the same time."
4112
4113 enabled_all gnutls mbedtls &&
4114     die "GnuTLS and mbedTLS must not be enabled at the same time."
4115
4116 enabled_all openssl mbedtls &&
4117     die "OpenSSL and mbedTLS must not be enabled at the same time."
4118
4119 # Disable all the library-specific components if the library itself
4120 # is disabled, see AVCODEC_LIST and following _LIST variables.
4121
4122 disable_components(){
4123     disabled ${1} && disable $(
4124         eval components="\$$(toupper ${1})_COMPONENTS"
4125         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
4126     )
4127 }
4128
4129 map 'disable_components $v' $LIBRARY_LIST
4130
4131 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
4132 set >> $logfile
4133
4134 test -n "$valgrind" && toolchain="valgrind-memcheck"
4135
4136 enabled ossfuzz && ! echo $CFLAGS | grep -q -- "-fsanitize="  && ! echo $CFLAGS | grep -q -- "-fcoverage-mapping" &&{
4137     add_cflags  -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp -fno-omit-frame-pointer
4138     add_ldflags -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp
4139 }
4140
4141 case "$toolchain" in
4142     *-asan)
4143         cc_default="${toolchain%-asan}"
4144         add_cflags  -fsanitize=address
4145         add_ldflags -fsanitize=address
4146     ;;
4147     *-msan)
4148         cc_default="${toolchain%-msan}"
4149         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
4150         add_ldflags -fsanitize=memory
4151     ;;
4152     *-tsan)
4153         cc_default="${toolchain%-tsan}"
4154         add_cflags  -fsanitize=thread
4155         add_ldflags -fsanitize=thread
4156         case "$toolchain" in
4157             gcc-tsan)
4158                 add_cflags  -fPIC
4159                 add_ldflags -fPIC
4160                 ;;
4161         esac
4162     ;;
4163     *-usan)
4164         cc_default="${toolchain%-usan}"
4165         add_cflags  -fsanitize=undefined
4166         add_ldflags -fsanitize=undefined
4167     ;;
4168     valgrind-*)
4169         target_exec_default="valgrind"
4170         case "$toolchain" in
4171             valgrind-massif)
4172                 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"
4173                 ;;
4174             valgrind-memcheck)
4175                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
4176                 ;;
4177         esac
4178     ;;
4179     msvc)
4180         # Check whether the current MSVC version needs the C99 converter.
4181         # From MSVC 2013 (compiler major version 18) onwards, it does actually
4182         # support enough of C99 to build ffmpeg. Default to the new
4183         # behaviour if the regexp was unable to match anything, since this
4184         # successfully parses the version number of existing supported
4185         # versions that require the converter (MSVC 2010 and 2012).
4186         cl_major_ver=$(cl.exe 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
4187         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
4188             cc_default="cl.exe"
4189             cxx_default="cl.exe"
4190         else
4191             die "Unsupported MSVC version (2013 or newer required)"
4192         fi
4193         ld_default="$source_path/compat/windows/mslink"
4194         nm_default="dumpbin.exe -symbols"
4195         ar_default="lib.exe"
4196         case "$arch" in
4197         aarch64|arm64)
4198             as_default="armasm64.exe"
4199             ;;
4200         arm*)
4201             as_default="armasm.exe"
4202             ;;
4203         esac
4204         target_os_default="win32"
4205         # Use a relative path for TMPDIR. This makes sure all the
4206         # ffconf temp files are written with a relative path, avoiding
4207         # issues with msys/win32 path conversion for MSVC parameters
4208         # such as -Fo<file> or -out:<file>.
4209         TMPDIR=.
4210     ;;
4211     icl)
4212         cc_default="icl"
4213         ld_default="xilink"
4214         nm_default="dumpbin -symbols"
4215         ar_default="xilib"
4216         target_os_default="win32"
4217         TMPDIR=.
4218     ;;
4219     gcov)
4220         add_cflags  -fprofile-arcs -ftest-coverage
4221         add_ldflags -fprofile-arcs -ftest-coverage
4222     ;;
4223     llvm-cov)
4224         add_cflags -fprofile-arcs -ftest-coverage
4225         add_ldflags --coverage
4226     ;;
4227     hardened)
4228         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
4229         add_cflags   -fno-strict-overflow -fstack-protector-all
4230         add_ldflags  -Wl,-z,relro -Wl,-z,now
4231         add_cflags   -fPIE
4232         add_ldexeflags -fPIE -pie
4233     ;;
4234     ?*)
4235         die "Unknown toolchain $toolchain"
4236     ;;
4237 esac
4238
4239 if test -n "$cross_prefix"; then
4240     test -n "$arch" && test -n "$target_os" ||
4241         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
4242     enable cross_compile
4243 fi
4244
4245 set_default target_os
4246 if test "$target_os" = android; then
4247     cc_default="clang"
4248 fi
4249
4250 ar_default="${cross_prefix}${ar_default}"
4251 cc_default="${cross_prefix}${cc_default}"
4252 cxx_default="${cross_prefix}${cxx_default}"
4253 nm_default="${cross_prefix}${nm_default}"
4254 pkg_config_default="${cross_prefix}${pkg_config_default}"
4255 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
4256     ranlib_default="${cross_prefix}${ranlib_default} -D"
4257 else
4258     ranlib_default="${cross_prefix}${ranlib_default}"
4259 fi
4260 strip_default="${cross_prefix}${strip_default}"
4261 windres_default="${cross_prefix}${windres_default}"
4262
4263 sysinclude_default="${sysroot}/usr/include"
4264
4265 if enabled cuda_sdk; then
4266     warn "Option --enable-cuda-sdk is deprecated. Use --enable-cuda-nvcc instead."
4267     enable cuda_nvcc
4268 fi
4269
4270 if enabled cuda_nvcc; then
4271     nvcc_default="nvcc"
4272     nvccflags_default="-gencode arch=compute_30,code=sm_30 -O2"
4273 else
4274     nvcc_default="clang"
4275     nvccflags_default="--cuda-gpu-arch=sm_30 -O2"
4276     NVCC_C=""
4277 fi
4278
4279 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
4280     target_exec x86asmexe nvcc
4281 enabled cross_compile || host_cc_default=$cc
4282 set_default host_cc
4283
4284 pkg_config_fail_message=""
4285 if ! $pkg_config --version >/dev/null 2>&1; then
4286     warn "$pkg_config not found, library detection may fail."
4287     pkg_config=false
4288 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
4289     pkg_config_fail_message="
4290 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
4291 fi
4292
4293 if test $doxygen != $doxygen_default && \
4294   ! $doxygen --version >/dev/null 2>&1; then
4295     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
4296 fi
4297
4298 exesuf() {
4299     case $1 in
4300         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
4301     esac
4302 }
4303
4304 EXESUF=$(exesuf $target_os)
4305 HOSTEXESUF=$(exesuf $host_os)
4306
4307 # set temporary file name
4308 : ${TMPDIR:=$TEMPDIR}
4309 : ${TMPDIR:=$TMP}
4310 : ${TMPDIR:=/tmp}
4311
4312 if [ -n "$tempprefix" ] ; then
4313     mktemp(){
4314         tmpname="$tempprefix.${HOSTNAME}.${UID}"
4315         echo "$tmpname"
4316         mkdir "$tmpname"
4317     }
4318 elif ! test_cmd mktemp -u XXXXXX; then
4319     # simple replacement for missing mktemp
4320     # NOT SAFE FOR GENERAL USE
4321     mktemp(){
4322         tmpname="${2%%XXX*}.${HOSTNAME}.${UID}.$$"
4323         echo "$tmpname"
4324         mkdir "$tmpname"
4325     }
4326 fi
4327
4328 FFTMPDIR=$(mktemp -d "${TMPDIR}/ffconf.XXXXXXXX" 2> /dev/null) ||
4329     die "Unable to create temporary directory in $TMPDIR."
4330
4331 tmpfile(){
4332     tmp="${FFTMPDIR}/test"$2
4333     (set -C; exec > $tmp) 2> /dev/null ||
4334         die "Unable to create temporary file in $FFTMPDIR."
4335     eval $1=$tmp
4336 }
4337
4338 trap 'rm -rf -- "$FFTMPDIR"' EXIT
4339 trap 'exit 2' INT
4340
4341 tmpfile TMPASM .asm
4342 tmpfile TMPC   .c
4343 tmpfile TMPCPP .cpp
4344 tmpfile TMPE   $EXESUF
4345 tmpfile TMPH   .h
4346 tmpfile TMPM   .m
4347 tmpfile TMPCU  .cu
4348 tmpfile TMPO   .o
4349 tmpfile TMPS   .S
4350 tmpfile TMPSH  .sh
4351 tmpfile TMPV   .ver
4352
4353 unset -f mktemp
4354
4355 chmod +x $TMPE
4356
4357 # make sure we can execute files in $TMPDIR
4358 cat > $TMPSH 2>> $logfile <<EOF
4359 #! /bin/sh
4360 EOF
4361 chmod +x $TMPSH >> $logfile 2>&1
4362 if ! $TMPSH >> $logfile 2>&1; then
4363     cat <<EOF
4364 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
4365 variable to another directory and make sure that it is not mounted noexec.
4366 EOF
4367     die "Sanity test failed."
4368 fi
4369
4370 armasm_flags(){
4371     for flag; do
4372         case $flag in
4373             # Filter out MSVC cl.exe options from cflags that shouldn't
4374             # be passed to gas-preprocessor
4375             -M[TD]*)                                            ;;
4376             *)                  echo $flag                      ;;
4377         esac
4378    done
4379 }
4380
4381 cparser_flags(){
4382     for flag; do
4383         case $flag in
4384             -Wno-switch)             echo -Wno-switch-enum ;;
4385             -Wno-format-zero-length) ;;
4386             -Wdisabled-optimization) ;;
4387             -Wno-pointer-sign)       echo -Wno-other ;;
4388             *)                       echo $flag ;;
4389         esac
4390     done
4391 }
4392
4393 msvc_common_flags(){
4394     for flag; do
4395         case $flag in
4396             # In addition to specifying certain flags under the compiler
4397             # specific filters, they must be specified here as well or else the
4398             # generic catch all at the bottom will print the original flag.
4399             -Wall)                ;;
4400             -Wextra)              ;;
4401             -std=c99)             ;;
4402             # Common flags
4403             -fomit-frame-pointer) ;;
4404             -g)                   echo -Z7 ;;
4405             -fno-math-errno)      ;;
4406             -fno-common)          ;;
4407             -fno-signed-zeros)    ;;
4408             -fPIC)                ;;
4409             -mthumb)              ;;
4410             -march=*)             ;;
4411             -lz)                  echo zlib.lib ;;
4412             -lx264)               echo libx264.lib ;;
4413             -lstdc++)             ;;
4414             -l*)                  echo ${flag#-l}.lib ;;
4415             -LARGEADDRESSAWARE)   echo $flag ;;
4416             -L*)                  echo -libpath:${flag#-L} ;;
4417             *)                    echo $flag ;;
4418         esac
4419     done
4420 }
4421
4422 msvc_flags(){
4423     msvc_common_flags "$@"
4424     for flag; do
4425         case $flag in
4426             -Wall)                echo -W3 -wd4018 -wd4146 -wd4244 -wd4305     \
4427                                        -wd4554 ;;
4428             -Wextra)              echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
4429                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
4430                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
4431                                        -wd4307 \
4432                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
4433         esac
4434     done
4435 }
4436
4437 icl_flags(){
4438     msvc_common_flags "$@"
4439     for flag; do
4440         case $flag in
4441             # Despite what Intel's documentation says -Wall, which is supported
4442             # on Windows, does enable remarks so disable them here.
4443             -Wall)                echo $flag -Qdiag-disable:remark ;;
4444             -std=c99)             echo -Qstd=c99 ;;
4445             -flto)                echo -ipo ;;
4446         esac
4447     done
4448 }
4449
4450 icc_flags(){
4451     for flag; do
4452         case $flag in
4453             -flto)                echo -ipo ;;
4454             *)                    echo $flag ;;
4455         esac
4456     done
4457 }
4458
4459 suncc_flags(){
4460     for flag; do
4461         case $flag in
4462             -march=*|-mcpu=*)
4463                 case "${flag#*=}" in
4464                     native)                   echo -xtarget=native       ;;
4465                     v9|niagara)               echo -xarch=sparc          ;;
4466                     ultrasparc)               echo -xarch=sparcvis       ;;
4467                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
4468                     i586|pentium)             echo -xchip=pentium        ;;
4469                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
4470                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
4471                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
4472                     pentium4*)          echo -xtarget=pentium4           ;;
4473                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
4474                     *-sse3)             echo -xarch=sse3                 ;;
4475                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
4476                     bonnell)                   echo -xarch=ssse3         ;;
4477                     corei7|nehalem)            echo -xtarget=nehalem     ;;
4478                     westmere)                  echo -xtarget=westmere    ;;
4479                     silvermont)                echo -xarch=sse4_2        ;;
4480                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
4481                     core-avx*|ivybridge|haswell|broadwell|skylake*|knl)
4482                                                echo -xarch=avx           ;;
4483                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
4484                     btver1)                    echo -xarch=amdsse4a      ;;
4485                     btver2|bdver*|znver*)      echo -xarch=avx           ;;
4486                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
4487                     k8|opteron|athlon64|athlon-fx)
4488                                                echo -xarch=sse2a         ;;
4489                     athlon*)                   echo -xarch=pentium_proa  ;;
4490                 esac
4491                 ;;
4492             -std=c99)             echo -xc99              ;;
4493             -fomit-frame-pointer) echo -xregs=frameptr    ;;
4494             -fPIC)                echo -KPIC -xcode=pic32 ;;
4495             -W*,*)                echo $flag              ;;
4496             -f*-*|-W*|-mimpure-text)                      ;;
4497             -shared)              echo -G                 ;;
4498             *)                    echo $flag              ;;
4499         esac
4500     done
4501 }
4502
4503 probe_cc(){
4504     pfx=$1
4505     _cc=$2
4506     first=$3
4507
4508     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
4509     unset _ld_o _ldflags _ld_lib _ld_path
4510     unset _depflags _DEPCMD _DEPFLAGS
4511     _flags_filter=echo
4512
4513     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
4514         true # no-op to avoid reading stdin in following checks
4515     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
4516         _type=llvm_gcc
4517         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
4518         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
4519         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4520         _cflags_speed='-O3'
4521         _cflags_size='-Os'
4522     elif $_cc -v 2>&1 | grep -qi ^gcc; then
4523         _type=gcc
4524         gcc_version=$($_cc --version | head -n1)
4525         gcc_basever=$($_cc -dumpversion)
4526         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
4527         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
4528         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
4529         case $gcc_basever in
4530             2) ;;
4531             2.*) ;;
4532             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
4533         esac
4534         if [ "$first" = true ]; then
4535             case $gcc_basever in
4536                 4.2*)
4537                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
4538             esac
4539         fi
4540         _cflags_speed='-O3'
4541         _cflags_size='-Os'
4542     elif $_cc --version 2>/dev/null | grep -q ^icc; then
4543         _type=icc
4544         _ident=$($_cc --version | head -n1)
4545         _depflags='-MMD'
4546         _cflags_speed='-O3'
4547         _cflags_size='-Os'
4548         _cflags_noopt='-O1'
4549         _flags_filter=icc_flags
4550     elif $_cc -v 2>&1 | grep -q xlc; then
4551         _type=xlc
4552         _ident=$($_cc -qversion 2>/dev/null | head -n1)
4553         _cflags_speed='-O5'
4554         _cflags_size='-O5 -qcompact'
4555     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
4556         test -d "$sysroot" || die "No valid sysroot specified."
4557         _type=armcc
4558         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
4559         armcc_conf="$PWD/armcc.conf"
4560         $_cc --arm_linux_configure                 \
4561              --arm_linux_config_file="$armcc_conf" \
4562              --configure_sysroot="$sysroot"        \
4563              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
4564              die "Error creating armcc configuration file."
4565         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
4566         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
4567         as_default="${cross_prefix}gcc"
4568         _depflags='-MMD'
4569         _cflags_speed='-O3'
4570         _cflags_size='-Os'
4571     elif $_cc -v 2>&1 | grep -q clang && ! $_cc -? > /dev/null 2>&1; then
4572         _type=clang
4573         _ident=$($_cc --version 2>/dev/null | head -n1)
4574         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4575         _cflags_speed='-O3'
4576         _cflags_size='-Oz'
4577     elif $_cc -V 2>&1 | grep -q Sun; then
4578         _type=suncc
4579         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
4580         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
4581         _DEPFLAGS='-xM1 -xc99'
4582         _ldflags='-std=c99'
4583         _cflags_speed='-O5'
4584         _cflags_size='-O5 -xspace'
4585         _flags_filter=suncc_flags
4586     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
4587         _type=pathscale
4588         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4589         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4590         _cflags_speed='-O2'
4591         _cflags_size='-Os'
4592         _flags_filter='filter_out -Wdisabled-optimization'
4593     elif $_cc -v 2>&1 | grep -q Open64; then
4594         _type=open64
4595         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4596         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4597         _cflags_speed='-O2'
4598         _cflags_size='-Os'
4599         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
4600     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
4601         _type=armasm
4602         _ident=$($_cc | head -n1)
4603         # 4509: "This form of conditional instruction is deprecated"
4604         _flags="-nologo -ignore 4509"
4605         _flags_filter=armasm_flags
4606     elif $_cc 2>&1 | grep -q Intel; then
4607         _type=icl
4608         _ident=$($_cc 2>&1 | head -n1)
4609         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
4610         # Not only is O3 broken on 13.x+ but it is slower on all previous
4611         # versions (tested) as well.
4612         _cflags_speed="-O2"
4613         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
4614         if $_cc 2>&1 | grep -q Linker; then
4615             _ld_o='-out:$@'
4616         else
4617             _ld_o='-Fe$@'
4618         fi
4619         _cc_o='-Fo$@'
4620         _cc_e='-P'
4621         _flags_filter=icl_flags
4622         _ld_lib='lib%.a'
4623         _ld_path='-libpath:'
4624         # -Qdiag-error to make icl error when seeing certain unknown arguments
4625         _flags='-nologo -Qdiag-error:4044,10157'
4626         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
4627         # with MSVC which enables it by default.
4628         _cflags='-Qms0 -Qvec- -Qsimd- -GS -fp:precise'
4629         disable stripping
4630     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
4631         # lld can emulate multiple different linkers; in ms link.exe mode,
4632         # the -? parameter gives the help output which contains an identifyable
4633         # string, while it gives an error in other modes.
4634         _type=lld-link
4635         # The link.exe mode doesn't have a switch for getting the version,
4636         # but we can force it back to gnu mode and get the version from there.
4637         _ident=$($_cc -flavor gnu --version 2>/dev/null)
4638         _ld_o='-out:$@'
4639         _flags_filter=msvc_flags
4640         _ld_lib='lib%.a'
4641         _ld_path='-libpath:'
4642     elif $_cc -nologo- 2>&1 | grep -q Microsoft || { $_cc -v 2>&1 | grep -q clang && $_cc -? > /dev/null 2>&1; }; then
4643         _type=msvc
4644         _ident=$($_cc 2>&1 | head -n1 | tr -d '\r')
4645         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
4646         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
4647         _cflags_speed="-O2"
4648         _cflags_size="-O1"
4649         _cflags_noopt="-O1"
4650         if $_cc -nologo- 2>&1 | grep -q Linker; then
4651             _ld_o='-out:$@'
4652         else
4653             _ld_o='-Fe$@'
4654         fi
4655         _cc_o='-Fo$@'
4656         _cc_e='-P -Fi$@'
4657         _flags_filter=msvc_flags
4658         _ld_lib='lib%.a'
4659         _ld_path='-libpath:'
4660         _flags='-nologo'
4661         disable stripping
4662     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
4663         _type=cparser
4664         _ident=$($_cc --version | head -n1)
4665         _depflags='-MMD'
4666         _cflags_speed='-O4'
4667         _cflags_size='-O2'
4668         _flags_filter=cparser_flags
4669     fi
4670
4671     eval ${pfx}_type=\$_type
4672     eval ${pfx}_ident=\$_ident
4673 }
4674
4675 set_ccvars(){
4676     eval ${1}_C=\${_cc_c-\${${1}_C}}
4677     eval ${1}_E=\${_cc_e-\${${1}_E}}
4678     eval ${1}_O=\${_cc_o-\${${1}_O}}
4679
4680     if [ -n "$_depflags" ]; then
4681         eval ${1}_DEPFLAGS=\$_depflags
4682     else
4683         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
4684         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
4685         eval DEP${1}FLAGS=\$_flags
4686     fi
4687 }
4688
4689 probe_cc cc "$cc" "true"
4690 cflags_filter=$_flags_filter
4691 cflags_speed=$_cflags_speed
4692 cflags_size=$_cflags_size
4693 cflags_noopt=$_cflags_noopt
4694 add_cflags $_flags $_cflags
4695 cc_ldflags=$_ldflags
4696 set_ccvars CC
4697 set_ccvars CXX
4698
4699 probe_cc hostcc "$host_cc"
4700 host_cflags_filter=$_flags_filter
4701 host_cflags_speed=$_cflags_speed
4702 add_host_cflags  $_flags $_cflags
4703 set_ccvars HOSTCC
4704
4705 test -n "$cc_type" && enable $cc_type ||
4706     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4707
4708 : ${as_default:=$cc}
4709 : ${objcc_default:=$cc}
4710 : ${dep_cc_default:=$cc}
4711 : ${ld_default:=$cc}
4712 : ${host_ld_default:=$host_cc}
4713 set_default ar as objcc dep_cc ld ln_s host_ld windres
4714
4715 probe_cc as "$as"
4716 asflags_filter=$_flags_filter
4717 add_asflags $_flags $_cflags
4718 set_ccvars AS
4719
4720 probe_cc objcc "$objcc"
4721 objcflags_filter=$_flags_filter
4722 add_objcflags $_flags $_cflags
4723 set_ccvars OBJC
4724
4725 probe_cc ld "$ld"
4726 ldflags_filter=$_flags_filter
4727 add_ldflags $_flags $_ldflags
4728 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4729 LD_O=${_ld_o-$LD_O}
4730 LD_LIB=${_ld_lib-$LD_LIB}
4731 LD_PATH=${_ld_path-$LD_PATH}
4732
4733 probe_cc hostld "$host_ld"
4734 host_ldflags_filter=$_flags_filter
4735 add_host_ldflags $_flags $_ldflags
4736 HOSTLD_O=${_ld_o-$HOSTLD_O}
4737
4738 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4739     probe_cc depcc "$dep_cc"
4740     CCDEP=${_DEPCMD:-$DEPCMD}
4741     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4742     DEPCCFLAGS=$_flags
4743 fi
4744
4745 if $ar 2>&1 | grep -q Microsoft; then
4746     arflags="-nologo"
4747     ar_o='-out:$@'
4748 elif $ar 2>&1 | grep -q "\[D\] "; then
4749     arflags="rcD"
4750     ar_o='$@'
4751 else
4752     arflags="rc"
4753     ar_o='$@'
4754 fi
4755
4756 add_cflags $extra_cflags
4757 add_cxxflags $extra_cxxflags
4758 add_objcflags $extra_objcflags
4759 add_asflags $extra_cflags
4760
4761 if test -n "$sysroot"; then
4762     case "$cc_type" in
4763         gcc|llvm_gcc|clang)
4764             add_cppflags --sysroot="$sysroot"
4765             add_ldflags --sysroot="$sysroot"
4766         ;;
4767     esac
4768 fi
4769
4770 if test "$cpu" = host; then
4771     enabled cross_compile &&
4772         die "--cpu=host makes no sense when cross-compiling."
4773
4774     case "$cc_type" in
4775         gcc|llvm_gcc)
4776             check_native(){
4777                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4778                 sed -n "/cc1.*$1=/{
4779                             s/.*$1=\\([^ ]*\\).*/\\1/
4780                             p
4781                             q
4782                         }" $TMPE
4783             }
4784             cpu=$(check_native -march || check_native -mcpu)
4785         ;;
4786         clang)
4787             check_native(){
4788                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4789                 sed -n "/cc1.*-target-cpu /{
4790                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4791                             p
4792                             q
4793                         }" $TMPE
4794             }
4795             cpu=$(check_native -march)
4796         ;;
4797     esac
4798
4799     test "${cpu:-host}" = host &&
4800         die "--cpu=host not supported with compiler $cc"
4801 fi
4802
4803 # Deal with common $arch aliases
4804 case "$arch" in
4805     aarch64|arm64)
4806         arch="aarch64"
4807     ;;
4808     arm*|iPad*|iPhone*)
4809         arch="arm"
4810     ;;
4811     mips*|IP*)
4812         case "$arch" in
4813         *el)
4814             add_cppflags -EL
4815             add_ldflags -EL
4816         ;;
4817         *eb)
4818             add_cppflags -EB
4819             add_ldflags -EB
4820         ;;
4821         esac
4822         arch="mips"
4823     ;;
4824     parisc*|hppa*)
4825         arch="parisc"
4826     ;;
4827     "Power Macintosh"|ppc*|powerpc*)
4828         arch="ppc"
4829     ;;
4830     s390|s390x)
4831         arch="s390"
4832     ;;
4833     sh4|sh)
4834         arch="sh4"
4835     ;;
4836     sun4*|sparc*)
4837         arch="sparc"
4838     ;;
4839     tilegx|tile-gx)
4840         arch="tilegx"
4841     ;;
4842     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4843         arch="x86"
4844     ;;
4845 esac
4846
4847 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4848 enable $arch
4849
4850 # Add processor-specific flags
4851 if enabled aarch64; then
4852
4853     case $cpu in
4854         armv*)
4855             cpuflags="-march=$cpu"
4856         ;;
4857         *)
4858             cpuflags="-mcpu=$cpu"
4859         ;;
4860     esac
4861
4862 elif enabled alpha; then
4863
4864     cpuflags="-mcpu=$cpu"
4865
4866 elif enabled arm; then
4867
4868     check_arm_arch() {
4869         test_cpp_condition stddef.h \
4870             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4871             $cpuflags
4872     }
4873
4874     probe_arm_arch() {
4875         if   check_arm_arch 4;        then echo armv4
4876         elif check_arm_arch 4T;       then echo armv4t
4877         elif check_arm_arch 5;        then echo armv5
4878         elif check_arm_arch 5E;       then echo armv5e
4879         elif check_arm_arch 5T;       then echo armv5t
4880         elif check_arm_arch 5TE;      then echo armv5te
4881         elif check_arm_arch 5TEJ;     then echo armv5te
4882         elif check_arm_arch 6;        then echo armv6
4883         elif check_arm_arch 6J;       then echo armv6j
4884         elif check_arm_arch 6K;       then echo armv6k
4885         elif check_arm_arch 6Z;       then echo armv6z
4886         elif check_arm_arch 6KZ;      then echo armv6zk
4887         elif check_arm_arch 6ZK;      then echo armv6zk
4888         elif check_arm_arch 6T2;      then echo armv6t2
4889         elif check_arm_arch 7;        then echo armv7
4890         elif check_arm_arch 7A  7_A;  then echo armv7-a
4891         elif check_arm_arch 7S;       then echo armv7-a
4892         elif check_arm_arch 7R  7_R;  then echo armv7-r
4893         elif check_arm_arch 7M  7_M;  then echo armv7-m
4894         elif check_arm_arch 7EM 7E_M; then echo armv7-m
4895         elif check_arm_arch 8A  8_A;  then echo armv8-a
4896         fi
4897     }
4898
4899     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4900
4901     case $cpu in
4902         armv*)
4903             cpuflags="-march=$cpu"
4904             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4905         ;;
4906         *)
4907             cpuflags="-mcpu=$cpu"
4908             case $cpu in
4909                 cortex-a*)                               subarch=armv7a  ;;
4910                 cortex-r*)                               subarch=armv7r  ;;
4911                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4912                 arm11*)                                  subarch=armv6   ;;
4913                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4914                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4915                 *)                             subarch=$(probe_arm_arch) ;;
4916             esac
4917         ;;
4918     esac
4919
4920     case "$subarch" in
4921         armv5t*)    enable fast_clz                ;;
4922         armv[6-8]*)
4923             enable fast_clz
4924             disabled fast_unaligned || enable fast_unaligned
4925             ;;
4926     esac
4927
4928 elif enabled avr32; then
4929
4930     case $cpu in
4931         ap7[02]0[0-2])
4932             subarch="avr32_ap"
4933             cpuflags="-mpart=$cpu"
4934         ;;
4935         ap)
4936             subarch="avr32_ap"
4937             cpuflags="-march=$cpu"
4938         ;;
4939         uc3[ab]*)
4940             subarch="avr32_uc"
4941             cpuflags="-mcpu=$cpu"
4942         ;;
4943         uc)
4944             subarch="avr32_uc"
4945             cpuflags="-march=$cpu"
4946         ;;
4947     esac
4948
4949 elif enabled bfin; then
4950
4951     cpuflags="-mcpu=$cpu"
4952
4953 elif enabled mips; then
4954
4955     cpuflags="-march=$cpu"
4956
4957     if [ "$cpu" != "generic" ]; then
4958         disable mips32r2
4959         disable mips32r5
4960         disable mips64r2
4961         disable mips32r6
4962         disable mips64r6
4963         disable loongson2
4964         disable loongson3
4965
4966         case $cpu in
4967             24kc|24kf*|24kec|34kc|1004kc|24kef*|34kf*|1004kf*|74kc|74kf)
4968                 enable mips32r2
4969                 disable msa
4970             ;;
4971             p5600|i6400|p6600)
4972                 disable mipsdsp
4973                 disable mipsdspr2
4974             ;;
4975             loongson*)
4976                 enable loongson2
4977                 enable loongson3
4978                 enable local_aligned
4979                 enable simd_align_16
4980                 enable fast_64bit
4981 &n