avformat/libsrt: add pkt_size parameter to libsrt
[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-libass          enable libass subtitles rendering,
222                            needed for subtitles and ass filter [no]
223   --enable-libbluray       enable BluRay reading using libbluray [no]
224   --enable-libbs2b         enable bs2b DSP library [no]
225   --enable-libcaca         enable textual display using libcaca [no]
226   --enable-libcelt         enable CELT decoding via libcelt [no]
227   --enable-libcdio         enable audio CD grabbing with libcdio [no]
228   --enable-libcodec2       enable codec2 en/decoding using libcodec2 [no]
229   --enable-libdavs2        enable AVS2 decoding via libdavs2 [no]
230   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
231                            and libraw1394 [no]
232   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
233   --enable-libflite        enable flite (voice synthesis) support via libflite [no]
234   --enable-libfontconfig   enable libfontconfig, useful for drawtext filter [no]
235   --enable-libfreetype     enable libfreetype, needed for drawtext filter [no]
236   --enable-libfribidi      enable libfribidi, improves drawtext filter [no]
237   --enable-libgme          enable Game Music Emu via libgme [no]
238   --enable-libgsm          enable GSM de/encoding via libgsm [no]
239   --enable-libiec61883     enable iec61883 via libiec61883 [no]
240   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
241   --enable-libjack         enable JACK audio sound server [no]
242   --enable-libkvazaar      enable HEVC encoding via libkvazaar [no]
243   --enable-liblensfun      enable lensfun lens correction [no]
244   --enable-libmodplug      enable ModPlug via libmodplug [no]
245   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
246   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
247   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
248   --enable-libopencv       enable video filtering via libopencv [no]
249   --enable-libopenh264     enable H.264 encoding via OpenH264 [no]
250   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
251   --enable-libopenmpt      enable decoding tracked files via libopenmpt [no]
252   --enable-libopus         enable Opus de/encoding via libopus [no]
253   --enable-libpulse        enable Pulseaudio input via libpulse [no]
254   --enable-librsvg         enable SVG rasterization via librsvg [no]
255   --enable-librubberband   enable rubberband needed for rubberband filter [no]
256   --enable-librtmp         enable RTMP[E] support via librtmp [no]
257   --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
258   --enable-libsmbclient    enable Samba protocol via libsmbclient [no]
259   --enable-libsnappy       enable Snappy compression, needed for hap encoding [no]
260   --enable-libsoxr         enable Include libsoxr resampling [no]
261   --enable-libspeex        enable Speex de/encoding via libspeex [no]
262   --enable-libsrt          enable Haivision SRT protocol via libsrt [no]
263   --enable-libssh          enable SFTP protocol via libssh [no]
264   --enable-libtensorflow   enable TensorFlow as a DNN module backend
265                            for DNN based filters like sr [no]
266   --enable-libtesseract    enable Tesseract, needed for ocr filter [no]
267   --enable-libtheora       enable Theora encoding via libtheora [no]
268   --enable-libtls          enable LibreSSL (via libtls), needed for https support
269                            if openssl, gnutls or mbedtls is not used [no]
270   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
271   --enable-libv4l2         enable libv4l2/v4l-utils [no]
272   --enable-libvidstab      enable video stabilization using vid.stab [no]
273   --enable-libvmaf         enable vmaf filter via libvmaf [no]
274   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
275   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
276                            native implementation exists [no]
277   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
278   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
279   --enable-libwebp         enable WebP encoding via libwebp [no]
280   --enable-libx264         enable H.264 encoding via x264 [no]
281   --enable-libx265         enable HEVC encoding via x265 [no]
282   --enable-libxavs         enable AVS encoding via xavs [no]
283   --enable-libxcb          enable X11 grabbing using XCB [autodetect]
284   --enable-libxcb-shm      enable X11 grabbing shm communication [autodetect]
285   --enable-libxcb-xfixes   enable X11 grabbing mouse rendering [autodetect]
286   --enable-libxcb-shape    enable X11 grabbing shape rendering [autodetect]
287   --enable-libxvid         enable Xvid encoding via xvidcore,
288                            native MPEG-4/Xvid encoder exists [no]
289   --enable-libxml2         enable XML parsing using the C library libxml2, needed
290                            for dash demuxing support [no]
291   --enable-libzimg         enable z.lib, needed for zscale filter [no]
292   --enable-libzmq          enable message passing via libzmq [no]
293   --enable-libzvbi         enable teletext support via libzvbi [no]
294   --enable-lv2             enable LV2 audio filtering [no]
295   --disable-lzma           disable lzma [autodetect]
296   --enable-decklink        enable Blackmagic DeckLink I/O support [no]
297   --enable-libndi_newtek   enable Newteck NDI I/O support [no]
298   --enable-mbedtls         enable mbedTLS, needed for https support
299                            if openssl, gnutls or libtls is not used [no]
300   --enable-mediacodec      enable Android MediaCodec support [no]
301   --enable-libmysofa       enable libmysofa, needed for sofalizer filter [no]
302   --enable-openal          enable OpenAL 1.1 capture support [no]
303   --enable-opencl          enable OpenCL processing [no]
304   --enable-opengl          enable OpenGL rendering [no]
305   --enable-openssl         enable openssl, needed for https support
306                            if gnutls, libtls or mbedtls is not used [no]
307   --disable-sndio          disable sndio support [autodetect]
308   --disable-schannel       disable SChannel SSP, needed for TLS support on
309                            Windows if openssl and gnutls are not used [autodetect]
310   --disable-sdl2           disable sdl2 [autodetect]
311   --disable-securetransport disable Secure Transport, needed for TLS support
312                            on OSX if openssl and gnutls are not used [autodetect]
313   --enable-vapoursynth     enable VapourSynth demuxer [no]
314   --disable-xlib           disable xlib [autodetect]
315   --disable-zlib           disable zlib [autodetect]
316
317   The following libraries provide various hardware acceleration features:
318   --disable-amf            disable AMF video encoding code [autodetect]
319   --disable-audiotoolbox   disable Apple AudioToolbox code [autodetect]
320   --enable-cuda-sdk        enable CUDA features that require the CUDA SDK [no]
321   --disable-cuvid          disable Nvidia CUVID support [autodetect]
322   --disable-d3d11va        disable Microsoft Direct3D 11 video acceleration code [autodetect]
323   --disable-dxva2          disable Microsoft DirectX 9 video acceleration code [autodetect]
324   --disable-ffnvcodec      disable dynamically linked Nvidia code [autodetect]
325   --enable-libdrm          enable DRM code (Linux) [no]
326   --enable-libmfx          enable Intel MediaSDK (AKA Quick Sync Video) code via libmfx [no]
327   --enable-libnpp          enable Nvidia Performance Primitives-based code [no]
328   --enable-mmal            enable Broadcom Multi-Media Abstraction Layer (Raspberry Pi) via MMAL [no]
329   --disable-nvdec          disable Nvidia video decoding acceleration (via hwaccel) [autodetect]
330   --disable-nvenc          disable Nvidia video encoding code [autodetect]
331   --enable-omx             enable OpenMAX IL code [no]
332   --enable-omx-rpi         enable OpenMAX IL code for Raspberry Pi [no]
333   --enable-rkmpp           enable Rockchip Media Process Platform code [no]
334   --disable-v4l2-m2m       disable V4L2 mem2mem code [autodetect]
335   --disable-vaapi          disable Video Acceleration API (mainly Unix/Intel) code [autodetect]
336   --disable-vdpau          disable Nvidia Video Decode and Presentation API for Unix code [autodetect]
337   --disable-videotoolbox   disable VideoToolbox code [autodetect]
338
339 Toolchain options:
340   --arch=ARCH              select architecture [$arch]
341   --cpu=CPU                select the minimum required CPU (affects
342                            instruction selection, may crash on older CPUs)
343   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
344   --progs-suffix=SUFFIX    program name suffix []
345   --enable-cross-compile   assume a cross-compiler is used
346   --sysroot=PATH           root of cross-build tree
347   --sysinclude=PATH        location of cross-build system headers
348   --target-os=OS           compiler targets OS [$target_os]
349   --target-exec=CMD        command to run executables on target
350   --target-path=DIR        path to view of build directory on target
351   --target-samples=DIR     path to samples directory on target
352   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
353   --toolchain=NAME         set tool defaults according to NAME
354                            (gcc-asan, clang-asan, gcc-msan, clang-msan,
355                            gcc-tsan, clang-tsan, gcc-usan, clang-usan,
356                            valgrind-massif, valgrind-memcheck,
357                            msvc, icl, gcov, llvm-cov, hardened)
358   --nm=NM                  use nm tool NM [$nm_default]
359   --ar=AR                  use archive tool AR [$ar_default]
360   --as=AS                  use assembler AS [$as_default]
361   --ln_s=LN_S              use symbolic link tool LN_S [$ln_s_default]
362   --strip=STRIP            use strip tool STRIP [$strip_default]
363   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
364   --x86asmexe=EXE          use nasm-compatible assembler EXE [$x86asmexe_default]
365   --cc=CC                  use C compiler CC [$cc_default]
366   --cxx=CXX                use C compiler CXX [$cxx_default]
367   --objcc=OCC              use ObjC compiler OCC [$cc_default]
368   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
369   --nvcc=NVCC              use Nvidia CUDA compiler NVCC [$nvcc_default]
370   --ld=LD                  use linker LD [$ld_default]
371   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
372   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
373   --ranlib=RANLIB          use ranlib RANLIB [$ranlib_default]
374   --doxygen=DOXYGEN        use DOXYGEN to generate API doc [$doxygen_default]
375   --host-cc=HOSTCC         use host C compiler HOSTCC
376   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
377   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
378   --host-ld=HOSTLD         use host linker HOSTLD
379   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
380   --host-libs=HLIBS        use libs HLIBS when linking for host
381   --host-os=OS             compiler host OS [$target_os]
382   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
383   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
384   --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
385   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
386   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
387   --extra-ldsoflags=ELDFLAGS add ELDFLAGS to LDSOFLAGS [$LDSOFLAGS]
388   --extra-libs=ELIBS       add ELIBS [$ELIBS]
389   --extra-version=STRING   version string suffix []
390   --optflags=OPTFLAGS      override optimization-related compiler flags
391   --nvccflags=NVCCFLAGS    override nvcc flags [$nvccflags_default]
392   --build-suffix=SUFFIX    library name suffix []
393   --enable-pic             build position-independent code
394   --enable-thumb           compile for Thumb instruction set
395   --enable-lto             use link-time optimization
396   --env="ENV=override"     override the environment variables
397
398 Advanced options (experts only):
399   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
400   --custom-allocator=NAME  use a supported custom allocator
401   --disable-symver         disable symbol versioning
402   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
403   --disable-safe-bitstream-reader
404                            disable buffer boundary checking in bitreaders
405                            (faster, but may crash)
406   --sws-max-filter-size=N  the max filter size swscale uses [$sws_max_filter_size_default]
407
408 Optimization options (experts only):
409   --disable-asm            disable all assembly optimizations
410   --disable-altivec        disable AltiVec optimizations
411   --disable-vsx            disable VSX optimizations
412   --disable-power8         disable POWER8 optimizations
413   --disable-amd3dnow       disable 3DNow! optimizations
414   --disable-amd3dnowext    disable 3DNow! extended optimizations
415   --disable-mmx            disable MMX optimizations
416   --disable-mmxext         disable MMXEXT optimizations
417   --disable-sse            disable SSE optimizations
418   --disable-sse2           disable SSE2 optimizations
419   --disable-sse3           disable SSE3 optimizations
420   --disable-ssse3          disable SSSE3 optimizations
421   --disable-sse4           disable SSE4 optimizations
422   --disable-sse42          disable SSE4.2 optimizations
423   --disable-avx            disable AVX optimizations
424   --disable-xop            disable XOP optimizations
425   --disable-fma3           disable FMA3 optimizations
426   --disable-fma4           disable FMA4 optimizations
427   --disable-avx2           disable AVX2 optimizations
428   --disable-avx512         disable AVX-512 optimizations
429   --disable-aesni          disable AESNI optimizations
430   --disable-armv5te        disable armv5te optimizations
431   --disable-armv6          disable armv6 optimizations
432   --disable-armv6t2        disable armv6t2 optimizations
433   --disable-vfp            disable VFP optimizations
434   --disable-neon           disable NEON optimizations
435   --disable-inline-asm     disable use of inline assembly
436   --disable-x86asm         disable use of standalone x86 assembly
437   --disable-mipsdsp        disable MIPS DSP ASE R1 optimizations
438   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
439   --disable-msa            disable MSA optimizations
440   --disable-mipsfpu        disable floating point MIPS optimizations
441   --disable-mmi            disable Loongson SIMD optimizations
442   --disable-fast-unaligned consider unaligned accesses slow
443
444 Developer options (useful when working on FFmpeg itself):
445   --disable-debug          disable debugging symbols
446   --enable-debug=LEVEL     set the debug level [$debuglevel]
447   --disable-optimizations  disable compiler optimizations
448   --enable-extra-warnings  enable more compiler warnings
449   --disable-stripping      disable stripping of executables and shared libraries
450   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
451                            2 causes a slowdown at runtime.
452   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
453   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
454                            leaks and errors, using the specified valgrind binary.
455                            Cannot be combined with --target-exec
456   --enable-ftrapv          Trap arithmetic overflows
457   --samples=PATH           location of test samples for FATE, if not set use
458                            \$FATE_SAMPLES at make invocation time.
459   --enable-neon-clobber-test check NEON registers for clobbering (should be
460                            used only for debugging purposes)
461   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
462                            should be used only for debugging purposes)
463   --enable-random          randomly enable/disable components
464   --disable-random
465   --enable-random=LIST     randomly enable/disable specific components or
466   --disable-random=LIST    component groups. LIST is a comma-separated list
467                            of NAME[:PROB] entries where NAME is a component
468                            (group) and PROB the probability associated with
469                            NAME (default 0.5).
470   --random-seed=VALUE      seed value for --enable/disable-random
471   --disable-valgrind-backtrace do not print a backtrace under Valgrind
472                            (only applies to --disable-optimizations builds)
473   --enable-osfuzz          Enable building fuzzer tool
474   --libfuzzer=PATH         path to libfuzzer
475   --ignore-tests=TESTS     comma-separated list (without "fate-" prefix
476                            in the name) of tests whose result is ignored
477   --enable-linux-perf      enable Linux Performance Monitor API
478
479 NOTE: Object files are built at the place where configure is launched.
480 EOF
481   exit 0
482 }
483
484 if test -t 1 && which tput >/dev/null 2>&1; then
485     ncolors=$(tput colors)
486     if test -n "$ncolors" && test $ncolors -ge 8; then
487         bold_color=$(tput bold)
488         warn_color=$(tput setaf 3)
489         error_color=$(tput setaf 1)
490         reset_color=$(tput sgr0)
491     fi
492     # 72 used instead of 80 since that's the default of pr
493     ncols=$(tput cols)
494 fi
495 : ${ncols:=72}
496
497 log(){
498     echo "$@" >> $logfile
499 }
500
501 log_file(){
502     log BEGIN $1
503     pr -n -t $1 >> $logfile
504     log END $1
505 }
506
507 warn(){
508     log "WARNING: $*"
509     WARNINGS="${WARNINGS}WARNING: $*\n"
510 }
511
512 die(){
513     log "$@"
514     echo "$error_color$bold_color$@$reset_color"
515     cat <<EOF
516
517 If you think configure made a mistake, make sure you are using the latest
518 version from Git.  If the latest version fails, report the problem to the
519 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
520 EOF
521     if disabled logging; then
522         cat <<EOF
523 Rerun configure with logging enabled (do not use --disable-logging), and
524 include the log this produces with your report.
525 EOF
526     else
527         cat <<EOF
528 Include the log file "$logfile" produced by configure as this will help
529 solve the problem.
530 EOF
531     fi
532     exit 1
533 }
534
535 # Avoid locale weirdness, besides we really just want to translate ASCII.
536 toupper(){
537     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
538 }
539
540 tolower(){
541     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
542 }
543
544 c_escape(){
545     echo "$*" | sed 's/["\\]/\\\0/g'
546 }
547
548 sh_quote(){
549     v=$(echo "$1" | sed "s/'/'\\\\''/g")
550     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
551     echo "$v"
552 }
553
554 cleanws(){
555     echo "$@" | sed 's/^ *//;s/[[:space:]][[:space:]]*/ /g;s/ *$//'
556 }
557
558 filter(){
559     pat=$1
560     shift
561     for v; do
562         eval "case '$v' in $pat) printf '%s ' '$v' ;; esac"
563     done
564 }
565
566 filter_out(){
567     pat=$1
568     shift
569     for v; do
570         eval "case '$v' in $pat) ;; *) printf '%s ' '$v' ;; esac"
571     done
572 }
573
574 map(){
575     m=$1
576     shift
577     for v; do eval $m; done
578 }
579
580 add_suffix(){
581     suffix=$1
582     shift
583     for v; do echo ${v}${suffix}; done
584 }
585
586 remove_suffix(){
587     suffix=$1
588     shift
589     for v; do echo ${v%$suffix}; done
590 }
591
592 set_all(){
593     value=$1
594     shift
595     for var in $*; do
596         eval $var=$value
597     done
598 }
599
600 set_weak(){
601     value=$1
602     shift
603     for var; do
604         eval : \${$var:=$value}
605     done
606 }
607
608 sanitize_var_name(){
609     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
610 }
611
612 set_sanitized(){
613     var=$1
614     shift
615     eval $(sanitize_var_name "$var")='$*'
616 }
617
618 get_sanitized(){
619     eval echo \$$(sanitize_var_name "$1")
620 }
621
622 pushvar(){
623     for pvar in $*; do
624         eval level=\${${pvar}_level:=0}
625         eval ${pvar}_${level}="\$$pvar"
626         eval ${pvar}_level=$(($level+1))
627     done
628 }
629
630 popvar(){
631     for pvar in $*; do
632         eval level=\${${pvar}_level:-0}
633         test $level = 0 && continue
634         eval level=$(($level-1))
635         eval $pvar="\${${pvar}_${level}}"
636         eval ${pvar}_level=$level
637         eval unset ${pvar}_${level}
638     done
639 }
640
641 request(){
642     for var in $*; do
643         eval ${var}_requested=yes
644         eval $var=
645     done
646 }
647
648 enable(){
649     set_all yes $*
650 }
651
652 disable(){
653     set_all no $*
654 }
655
656 enable_weak(){
657     set_weak yes $*
658 }
659
660 disable_weak(){
661     set_weak no $*
662 }
663
664 enable_sanitized(){
665     for var; do
666         enable $(sanitize_var_name $var)
667     done
668 }
669
670 disable_sanitized(){
671     for var; do
672         disable $(sanitize_var_name $var)
673     done
674 }
675
676 do_enable_deep(){
677     for var; do
678         enabled $var && continue
679         set -- $var
680         eval enable_deep \$${var}_select
681         var=$1
682         eval enable_deep_weak \$${var}_suggest
683     done
684 }
685
686 enable_deep(){
687     do_enable_deep $*
688     enable $*
689 }
690
691 enable_deep_weak(){
692     for var; do
693         disabled $var && continue
694         set -- $var
695         do_enable_deep $var
696         var=$1
697         enable_weak $var
698     done
699 }
700
701 requested(){
702     test "${1#!}" = "$1" && op="=" || op="!="
703     eval test "x\$${1#!}_requested" $op "xyes"
704 }
705
706 enabled(){
707     test "${1#!}" = "$1" && op="=" || op="!="
708     eval test "x\$${1#!}" $op "xyes"
709 }
710
711 disabled(){
712     test "${1#!}" = "$1" && op="=" || op="!="
713     eval test "x\$${1#!}" $op "xno"
714 }
715
716 enabled_all(){
717     for opt; do
718         enabled $opt || return 1
719     done
720 }
721
722 disabled_all(){
723     for opt; do
724         disabled $opt || return 1
725     done
726 }
727
728 enabled_any(){
729     for opt; do
730         enabled $opt && return 0
731     done
732 }
733
734 disabled_any(){
735     for opt; do
736         disabled $opt && return 0
737     done
738     return 1
739 }
740
741 set_default(){
742     for opt; do
743         eval : \${$opt:=\$${opt}_default}
744     done
745 }
746
747 is_in(){
748     value=$1
749     shift
750     for var in $*; do
751         [ $var = $value ] && return 0
752     done
753     return 1
754 }
755
756 # The cfg loop is very hot (several thousands iterations), and in bash also
757 # potentialy quite slow. Try to abort the iterations early, preferably without
758 # calling functions. 70%+ of the time cfg is already done or without deps.
759 check_deps(){
760     for cfg; do
761         eval [ x\$${cfg}_checking = xdone ] && continue
762         eval [ x\$${cfg}_checking = xinprogress ] && die "Circular dependency for $cfg."
763
764         eval "
765         dep_all=\$${cfg}_deps
766         dep_any=\$${cfg}_deps_any
767         dep_con=\$${cfg}_conflict
768         dep_sel=\$${cfg}_select
769         dep_sgs=\$${cfg}_suggest
770         dep_ifa=\$${cfg}_if
771         dep_ifn=\$${cfg}_if_any
772         "
773
774         # most of the time here $cfg has no deps - avoid costly no-op work
775         if [ "$dep_all$dep_any$dep_con$dep_sel$dep_sgs$dep_ifa$dep_ifn" ]; then
776             eval ${cfg}_checking=inprogress
777
778             set -- $cfg "$dep_all" "$dep_any" "$dep_con" "$dep_sel" "$dep_sgs" "$dep_ifa" "$dep_ifn"
779             check_deps $dep_all $dep_any $dep_con $dep_sel $dep_sgs $dep_ifa $dep_ifn
780             cfg=$1; dep_all=$2; dep_any=$3; dep_con=$4; dep_sel=$5 dep_sgs=$6; dep_ifa=$7; dep_ifn=$8
781
782             [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
783             [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
784             enabled_all  $dep_all || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but not all dependencies are satisfied: $dep_all"; }
785             enabled_any  $dep_any || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but not any dependency is satisfied: $dep_any"; }
786             disabled_all $dep_con || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but some conflicting dependencies are unsatisfied: $dep_con"; }
787             disabled_any $dep_sel && { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but some selected dependency is unsatisfied: $dep_sel"; }
788
789             enabled $cfg && enable_deep_weak $dep_sel $dep_sgs
790
791             for dep in $dep_all $dep_any $dep_sel $dep_sgs; do
792                 # filter out library deps, these do not belong in extralibs
793                 is_in $dep $LIBRARY_LIST && continue
794                 enabled $dep && eval append ${cfg}_extralibs ${dep}_extralibs
795             done
796         fi
797
798         eval ${cfg}_checking=done
799     done
800 }
801
802 print_config(){
803     pfx=$1
804     files=$2
805     shift 2
806     map 'eval echo "$v \${$v:-no}"' "$@" |
807     awk "BEGIN { split(\"$files\", files) }
808         {
809             c = \"$pfx\" toupper(\$1);
810             v = \$2;
811             sub(/yes/, 1, v);
812             sub(/no/,  0, v);
813             for (f in files) {
814                 file = files[f];
815                 if (file ~ /\\.h\$/) {
816                     printf(\"#define %s %d\\n\", c, v) >>file;
817                 } else if (file ~ /\\.asm\$/) {
818                     printf(\"%%define %s %d\\n\", c, v) >>file;
819                 } else if (file ~ /\\.mak\$/) {
820                     n = -v ? \"\" : \"!\";
821                     printf(\"%s%s=yes\\n\", n, c) >>file;
822                 } else if (file ~ /\\.texi\$/) {
823                     pre = -v ? \"\" : \"@c \";
824                     yesno = \$2;
825                     c2 = tolower(c);
826                     gsub(/_/, \"-\", c2);
827                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
828                 }
829             }
830         }"
831 }
832
833 print_enabled(){
834     suf=$1
835     shift
836     for v; do
837         enabled $v && printf "%s\n" ${v%$suf}
838     done
839 }
840
841 append(){
842     var=$1
843     shift
844     eval "$var=\"\$$var $*\""
845 }
846
847 prepend(){
848     var=$1
849     shift
850     eval "$var=\"$* \$$var\""
851 }
852
853 reverse () {
854     eval '
855         reverse_out=
856         for v in $'$1'; do
857             reverse_out="$v $reverse_out"
858         done
859         '$1'=$reverse_out
860     '
861 }
862
863 # keeps the last occurence of each non-unique item
864 unique(){
865     unique_out=
866     eval unique_in=\$$1
867     reverse unique_in
868     for v in $unique_in; do
869         # " $unique_out" +space such that every item is surrounded with spaces
870         case " $unique_out" in *" $v "*) continue; esac  # already in list
871         unique_out="$unique_out$v "
872     done
873     reverse unique_out
874     eval $1=\$unique_out
875 }
876
877 resolve(){
878     resolve_out=
879     eval resolve_in=\$$1
880     for v in $resolve_in; do
881         eval 'resolve_out="$resolve_out$'$v' "'
882     done
883     eval $1=\$resolve_out
884 }
885
886 add_cppflags(){
887     append CPPFLAGS "$@"
888 }
889
890 add_cflags(){
891     append CFLAGS $($cflags_filter "$@")
892 }
893
894 add_cflags_headers(){
895     append CFLAGS_HEADERS $($cflags_filter "$@")
896 }
897
898 add_cxxflags(){
899     append CXXFLAGS $($cflags_filter "$@")
900 }
901
902 add_asflags(){
903     append ASFLAGS $($asflags_filter "$@")
904 }
905
906 add_objcflags(){
907     append OBJCFLAGS $($objcflags_filter "$@")
908 }
909
910 add_ldflags(){
911     append LDFLAGS $($ldflags_filter "$@")
912 }
913
914 add_ldexeflags(){
915     append LDEXEFLAGS $($ldflags_filter "$@")
916 }
917
918 add_ldsoflags(){
919     append LDSOFLAGS $($ldflags_filter "$@")
920 }
921
922 add_stripflags(){
923     append ASMSTRIPFLAGS "$@"
924 }
925
926 add_extralibs(){
927     prepend extralibs $($ldflags_filter "$@")
928 }
929
930 add_host_cppflags(){
931     append host_cppflags "$@"
932 }
933
934 add_host_cflags(){
935     append host_cflags $($host_cflags_filter "$@")
936 }
937
938 add_host_ldflags(){
939     append host_ldflags $($host_ldflags_filter "$@")
940 }
941
942 add_compat(){
943     append compat_objs $1
944     shift
945     map 'add_cppflags -D$v' "$@"
946 }
947
948 test_cmd(){
949     log "$@"
950     "$@" >> $logfile 2>&1
951 }
952
953 test_stat(){
954     log test_stat "$@"
955     stat "$1" >> $logfile 2>&1
956 }
957
958 cc_o(){
959     eval printf '%s\\n' $CC_O
960 }
961
962 cc_e(){
963     eval printf '%s\\n' $CC_E
964 }
965
966 test_cc(){
967     log test_cc "$@"
968     cat > $TMPC
969     log_file $TMPC
970     test_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
971 }
972
973 test_cxx(){
974     log test_cxx "$@"
975     cat > $TMPCPP
976     log_file $TMPCPP
977     test_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
978 }
979
980 test_objcc(){
981     log test_objcc "$@"
982     cat > $TMPM
983     log_file $TMPM
984     test_cmd $objcc -Werror=missing-prototypes $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPM
985 }
986
987 test_cpp(){
988     log test_cpp "$@"
989     cat > $TMPC
990     log_file $TMPC
991     test_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
992 }
993
994 as_o(){
995     eval printf '%s\\n' $AS_O
996 }
997
998 test_as(){
999     log test_as "$@"
1000     cat > $TMPS
1001     log_file $TMPS
1002     test_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
1003 }
1004
1005 x86asm_o(){
1006     eval printf '%s\\n' $X86ASM_O
1007 }
1008
1009 test_x86asm(){
1010     log test_x86asm "$@"
1011     echo "$1" > $TMPASM
1012     log_file $TMPASM
1013     shift
1014     test_cmd $x86asmexe $X86ASMFLAGS -Werror "$@" $(x86asm_o $TMPO) $TMPASM
1015 }
1016
1017 check_cmd(){
1018     log check_cmd "$@"
1019     cmd=$1
1020     disabled $cmd && return
1021     disable $cmd
1022     test_cmd $@ && enable $cmd
1023 }
1024
1025 check_as(){
1026     log check_as "$@"
1027     name=$1
1028     code=$2
1029     shift 2
1030     disable $name
1031     test_as $@ <<EOF && enable $name
1032 $code
1033 EOF
1034 }
1035
1036 check_inline_asm(){
1037     log check_inline_asm "$@"
1038     name="$1"
1039     code="$2"
1040     shift 2
1041     disable $name
1042     test_cc "$@" <<EOF && enable $name
1043 void foo(void){ __asm__ volatile($code); }
1044 EOF
1045 }
1046
1047 check_inline_asm_flags(){
1048     log check_inline_asm_flags "$@"
1049     name="$1"
1050     code="$2"
1051     flags=''
1052     shift 2
1053     while [ "$1" != "" ]; do
1054       append flags $1
1055       shift
1056     done;
1057     disable $name
1058     cat > $TMPC <<EOF
1059 void foo(void){ __asm__ volatile($code); }
1060 EOF
1061     log_file $TMPC
1062     test_cmd $cc $CPPFLAGS $CFLAGS $flags "$@" $CC_C $(cc_o $TMPO) $TMPC &&
1063     enable $name && add_cflags $flags && add_asflags $flags && add_ldflags $flags
1064 }
1065
1066 check_insn(){
1067     log check_insn "$@"
1068     check_inline_asm ${1}_inline "\"$2\""
1069     check_as ${1}_external "$2"
1070 }
1071
1072 check_x86asm(){
1073     log check_x86asm "$@"
1074     name=$1
1075     shift
1076     disable $name
1077     test_x86asm "$@" && enable $name
1078 }
1079
1080 ld_o(){
1081     eval printf '%s\\n' $LD_O
1082 }
1083
1084 test_ld(){
1085     log test_ld "$@"
1086     type=$1
1087     shift 1
1088     flags=$(filter_out '-l*|*.so' $@)
1089     libs=$(filter '-l*|*.so' $@)
1090     test_$type $($cflags_filter $flags) || return
1091     flags=$($ldflags_filter $flags)
1092     libs=$($ldflags_filter $libs)
1093     test_cmd $ld $LDFLAGS $LDEXEFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
1094 }
1095
1096 check_ld(){
1097     log check_ld "$@"
1098     type=$1
1099     name=$2
1100     shift 2
1101     disable $name
1102     test_ld $type $@ && enable $name
1103 }
1104
1105 print_include(){
1106     hdr=$1
1107     test "${hdr%.h}" = "${hdr}" &&
1108         echo "#include $hdr"    ||
1109         echo "#include <$hdr>"
1110 }
1111
1112 test_code(){
1113     log test_code "$@"
1114     check=$1
1115     headers=$2
1116     code=$3
1117     shift 3
1118     {
1119         for hdr in $headers; do
1120             print_include $hdr
1121         done
1122         echo "int main(void) { $code; return 0; }"
1123     } | test_$check "$@"
1124 }
1125
1126 check_cppflags(){
1127     log check_cppflags "$@"
1128     test_cpp "$@" <<EOF && append CPPFLAGS "$@"
1129 #include <stdlib.h>
1130 EOF
1131 }
1132
1133 test_cflags(){
1134     log test_cflags "$@"
1135     set -- $($cflags_filter "$@")
1136     test_cc "$@" <<EOF
1137 int x;
1138 EOF
1139 }
1140
1141 check_cflags(){
1142     log check_cflags "$@"
1143     test_cflags "$@" && add_cflags "$@"
1144 }
1145
1146 check_cxxflags(){
1147     log check_cxxflags "$@"
1148     set -- $($cflags_filter "$@")
1149     test_cxx "$@" <<EOF && append CXXFLAGS "$@"
1150 int x;
1151 EOF
1152 }
1153
1154 test_objcflags(){
1155     log test_objcflags "$@"
1156     set -- $($objcflags_filter "$@")
1157     test_objcc "$@" <<EOF
1158 int x;
1159 EOF
1160 }
1161
1162 check_objcflags(){
1163     log check_objcflags "$@"
1164     test_objcflags "$@" && add_objcflags "$@"
1165 }
1166
1167 test_ldflags(){
1168     log test_ldflags "$@"
1169     set -- $($ldflags_filter "$@")
1170     test_ld "cc" "$@" <<EOF
1171 int main(void){ return 0; }
1172 EOF
1173 }
1174
1175 check_ldflags(){
1176     log check_ldflags "$@"
1177     test_ldflags "$@" && add_ldflags "$@"
1178 }
1179
1180 test_stripflags(){
1181     log test_stripflags "$@"
1182     # call test_cc to get a fresh TMPO
1183     test_cc <<EOF
1184 int main(void) { return 0; }
1185 EOF
1186     test_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
1187 }
1188
1189 check_stripflags(){
1190     log check_stripflags "$@"
1191     test_stripflags "$@" && add_stripflags "$@"
1192 }
1193
1194 check_header(){
1195     log check_header "$@"
1196     headers=$1
1197     shift
1198     disable_sanitized $headers
1199     {
1200         for hdr in $headers; do
1201             print_include $hdr
1202         done
1203         echo "int x;"
1204     } | test_cpp "$@" && enable_sanitized $headers
1205 }
1206
1207 check_header_objcc(){
1208     log check_header_objcc "$@"
1209     rm -f -- "$TMPO"
1210     header=$1
1211     shift
1212     disable_sanitized $header
1213     {
1214        echo "#include <$header>"
1215        echo "int main(void) { return 0; }"
1216     } | test_objcc && test_stat "$TMPO" && enable_sanitized $header
1217 }
1218
1219 check_apple_framework(){
1220     log check_apple_framework "$@"
1221     framework="$1"
1222     name="$(tolower $framework)"
1223     header="${framework}/${framework}.h"
1224     disable $name
1225     check_header_objcc $header &&
1226         enable $name && eval ${name}_extralibs='"-framework $framework"'
1227 }
1228
1229 check_func(){
1230     log check_func "$@"
1231     func=$1
1232     shift
1233     disable $func
1234     test_ld "cc" "$@" <<EOF && enable $func
1235 extern int $func();
1236 int main(void){ $func(); }
1237 EOF
1238 }
1239
1240 check_complexfunc(){
1241     log check_complexfunc "$@"
1242     func=$1
1243     narg=$2
1244     shift 2
1245     test $narg = 2 && args="f, g" || args="f * I"
1246     disable $func
1247     test_ld "cc" "$@" <<EOF && enable $func
1248 #include <complex.h>
1249 #include <math.h>
1250 float foo(complex float f, complex float g) { return $func($args); }
1251 int main(void){ return (int) foo; }
1252 EOF
1253 }
1254
1255 check_mathfunc(){
1256     log check_mathfunc "$@"
1257     func=$1
1258     narg=$2
1259     shift 2
1260     test $narg = 2 && args="f, g" || args="f"
1261     disable $func
1262     test_ld "cc" "$@" <<EOF && enable $func
1263 #include <math.h>
1264 float foo(float f, float g) { return $func($args); }
1265 int main(void){ return (int) foo; }
1266 EOF
1267 }
1268
1269 check_func_headers(){
1270     log check_func_headers "$@"
1271     headers=$1
1272     funcs=$2
1273     shift 2
1274     {
1275         for hdr in $headers; do
1276             print_include $hdr
1277         done
1278         echo "#include <stdint.h>"
1279         for func in $funcs; do
1280             echo "long check_$func(void) { return (long) $func; }"
1281         done
1282         echo "int main(void) { int ret = 0;"
1283         # LTO could optimize out the test functions without this
1284         for func in $funcs; do
1285             echo " ret |= ((intptr_t)check_$func) & 0xFFFF;"
1286         done
1287         echo "return ret; }"
1288     } | test_ld "cc" "$@" && enable $funcs && enable_sanitized $headers
1289 }
1290
1291 check_class_headers_cpp(){
1292     log check_class_headers_cpp "$@"
1293     headers=$1
1294     classes=$2
1295     shift 2
1296     {
1297         for hdr in $headers; do
1298             echo "#include <$hdr>"
1299         done
1300         echo "int main(void) { "
1301         i=1
1302         for class in $classes; do
1303             echo "$class obj$i;"
1304             i=$(expr $i + 1)
1305         done
1306         echo "return 0; }"
1307     } | test_ld "cxx" "$@" && enable $funcs && enable_sanitized $headers
1308 }
1309
1310 test_cpp_condition(){
1311     log test_cpp_condition "$@"
1312     header=$1
1313     condition=$2
1314     shift 2
1315     test_cpp "$@" <<EOF
1316 #include <$header>
1317 #if !($condition)
1318 #error "unsatisfied condition: $condition"
1319 #endif
1320 EOF
1321 }
1322
1323 check_cpp_condition(){
1324     log check_cpp_condition "$@"
1325     name=$1
1326     shift 1
1327     disable $name
1328     test_cpp_condition "$@" && enable $name
1329 }
1330
1331 test_cflags_cc(){
1332     log test_cflags_cc "$@"
1333     flags=$1
1334     header=$2
1335     condition=$3
1336     shift 3
1337     set -- $($cflags_filter "$flags")
1338     test_cc "$@" <<EOF
1339 #include <$header>
1340 #if !($condition)
1341 #error "unsatisfied condition: $condition"
1342 #endif
1343 EOF
1344 }
1345
1346 check_lib(){
1347     log check_lib "$@"
1348     name="$1"
1349     headers="$2"
1350     funcs="$3"
1351     shift 3
1352     disable $name
1353     check_func_headers "$headers" "$funcs" "$@" &&
1354         enable $name && eval ${name}_extralibs="\$@"
1355 }
1356
1357 check_lib_cpp(){
1358     log check_lib_cpp "$@"
1359     name="$1"
1360     headers="$2"
1361     classes="$3"
1362     shift 3
1363     disable $name
1364     check_class_headers_cpp "$headers" "$classes" "$@" &&
1365         enable $name && eval ${name}_extralibs="\$@"
1366 }
1367
1368 test_pkg_config(){
1369     log test_pkg_config "$@"
1370     name="$1"
1371     pkg_version="$2"
1372     pkg="${2%% *}"
1373     headers="$3"
1374     funcs="$4"
1375     shift 4
1376     disable $name
1377     test_cmd $pkg_config --exists --print-errors $pkg_version || return
1378     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1379     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1380     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1381         enable $name &&
1382         set_sanitized "${name}_cflags"    $pkg_cflags &&
1383         set_sanitized "${name}_extralibs" $pkg_libs
1384 }
1385
1386 check_pkg_config(){
1387     log check_pkg_config "$@"
1388     name="$1"
1389     test_pkg_config "$@" &&
1390         eval add_cflags \$${name}_cflags
1391 }
1392
1393 test_exec(){
1394     test_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1395 }
1396
1397 check_exec_crash(){
1398     log check_exec_crash "$@"
1399     code=$(cat)
1400
1401     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1402     # are safe but may not be available everywhere.  Thus we use
1403     # raise(SIGTERM) instead.  The check is run in a subshell so we
1404     # can redirect the "Terminated" message from the shell.  SIGBUS
1405     # is not defined by standard C so it is used conditionally.
1406
1407     (test_exec "$@") >> $logfile 2>&1 <<EOF
1408 #include <signal.h>
1409 static void sighandler(int sig){
1410     raise(SIGTERM);
1411 }
1412 int foo(void){
1413     $code
1414 }
1415 int (*func_ptr)(void) = foo;
1416 int main(void){
1417     signal(SIGILL, sighandler);
1418     signal(SIGFPE, sighandler);
1419     signal(SIGSEGV, sighandler);
1420 #ifdef SIGBUS
1421     signal(SIGBUS, sighandler);
1422 #endif
1423     return func_ptr();
1424 }
1425 EOF
1426 }
1427
1428 check_type(){
1429     log check_type "$@"
1430     headers=$1
1431     type=$2
1432     shift 2
1433     disable_sanitized "$type"
1434     test_code cc "$headers" "$type v" "$@" && enable_sanitized "$type"
1435 }
1436
1437 check_struct(){
1438     log check_struct "$@"
1439     headers=$1
1440     struct=$2
1441     member=$3
1442     shift 3
1443     disable_sanitized "${struct}_${member}"
1444     test_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1445         enable_sanitized "${struct}_${member}"
1446 }
1447
1448 check_builtin(){
1449     log check_builtin "$@"
1450     name=$1
1451     headers=$2
1452     builtin=$3
1453     shift 3
1454     disable "$name"
1455     test_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1456 }
1457
1458 check_compile_assert(){
1459     log check_compile_assert "$@"
1460     name=$1
1461     headers=$2
1462     condition=$3
1463     shift 3
1464     disable "$name"
1465     test_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1466 }
1467
1468 check_cc(){
1469     log check_cc "$@"
1470     name=$1
1471     shift
1472     disable "$name"
1473     test_code cc "$@" && enable "$name"
1474 }
1475
1476 require(){
1477     log require "$@"
1478     name_version="$1"
1479     name="${1%% *}"
1480     shift
1481     check_lib $name "$@" || die "ERROR: $name_version not found"
1482 }
1483
1484 require_cc(){
1485     log require_cc "$@"
1486     name="$1"
1487     shift
1488     test_code cc "$@" || die "ERROR: $name failed"
1489 }
1490
1491 require_cpp(){
1492     name="$1"
1493     headers="$2"
1494     classes="$3"
1495     shift 3
1496     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1497 }
1498
1499 require_header(){
1500     log require_header "$@"
1501     headers="$1"
1502     check_header "$@" || die "ERROR: $headers not found"
1503 }
1504
1505 require_cpp_condition(){
1506     log require_cpp_condition "$@"
1507     condition="$2"
1508     test_cpp_condition "$@" || die "ERROR: $condition not satisfied"
1509 }
1510
1511 require_pkg_config(){
1512     log require_pkg_config "$@"
1513     pkg_version="$2"
1514     check_pkg_config "$@" || die "ERROR: $pkg_version not found using pkg-config$pkg_config_fail_message"
1515 }
1516
1517 hostcc_e(){
1518     eval printf '%s\\n' $HOSTCC_E
1519 }
1520
1521 hostcc_o(){
1522     eval printf '%s\\n' $HOSTCC_O
1523 }
1524
1525 test_host_cc(){
1526     log test_host_cc "$@"
1527     cat > $TMPC
1528     log_file $TMPC
1529     test_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1530 }
1531
1532 test_host_cpp(){
1533     log test_host_cpp "$@"
1534     cat > $TMPC
1535     log_file $TMPC
1536     test_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1537 }
1538
1539 check_host_cppflags(){
1540     log check_host_cppflags "$@"
1541     test_host_cpp "$@" <<EOF && append host_cppflags "$@"
1542 #include <stdlib.h>
1543 EOF
1544 }
1545
1546 check_host_cflags(){
1547     log check_host_cflags "$@"
1548     set -- $($host_cflags_filter "$@")
1549     test_host_cc "$@" <<EOF && append host_cflags "$@"
1550 int x;
1551 EOF
1552 }
1553
1554 test_host_cpp_condition(){
1555     log test_host_cpp_condition "$@"
1556     header=$1
1557     condition=$2
1558     shift 2
1559     test_host_cpp "$@" <<EOF
1560 #include <$header>
1561 #if !($condition)
1562 #error "unsatisfied condition: $condition"
1563 #endif
1564 EOF
1565 }
1566
1567 check_host_cpp_condition(){
1568     log check_host_cpp_condition "$@"
1569     name=$1
1570     shift 1
1571     disable $name
1572     test_host_cpp_condition "$@" && enable $name
1573 }
1574
1575 cp_if_changed(){
1576     cmp -s "$1" "$2" && { test "$quiet" != "yes" && echo "$2 is unchanged"; } && return
1577     mkdir -p "$(dirname $2)"
1578     cp -f "$1" "$2"
1579 }
1580
1581 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1582 # system-dependent things.
1583
1584 AVCODEC_COMPONENTS="
1585     bsfs
1586     decoders
1587     encoders
1588     hwaccels
1589     parsers
1590 "
1591
1592 AVDEVICE_COMPONENTS="
1593     indevs
1594     outdevs
1595 "
1596
1597 AVFILTER_COMPONENTS="
1598     filters
1599 "
1600
1601 AVFORMAT_COMPONENTS="
1602     demuxers
1603     muxers
1604     protocols
1605 "
1606
1607 COMPONENT_LIST="
1608     $AVCODEC_COMPONENTS
1609     $AVDEVICE_COMPONENTS
1610     $AVFILTER_COMPONENTS
1611     $AVFORMAT_COMPONENTS
1612 "
1613
1614 EXAMPLE_LIST="
1615     avio_dir_cmd_example
1616     avio_reading_example
1617     decode_audio_example
1618     decode_video_example
1619     demuxing_decoding_example
1620     encode_audio_example
1621     encode_video_example
1622     extract_mvs_example
1623     filter_audio_example
1624     filtering_audio_example
1625     filtering_video_example
1626     http_multiclient_example
1627     hw_decode_example
1628     metadata_example
1629     muxing_example
1630     qsvdec_example
1631     remuxing_example
1632     resampling_audio_example
1633     scaling_video_example
1634     transcode_aac_example
1635     transcoding_example
1636     vaapi_encode_example
1637     vaapi_transcode_example
1638 "
1639
1640 EXTERNAL_AUTODETECT_LIBRARY_LIST="
1641     alsa
1642     appkit
1643     avfoundation
1644     bzlib
1645     coreimage
1646     iconv
1647     libxcb
1648     libxcb_shm
1649     libxcb_shape
1650     libxcb_xfixes
1651     lzma
1652     schannel
1653     sdl2
1654     securetransport
1655     sndio
1656     xlib
1657     zlib
1658 "
1659
1660 EXTERNAL_LIBRARY_GPL_LIST="
1661     avisynth
1662     frei0r
1663     libcdio
1664     libdavs2
1665     librubberband
1666     libvidstab
1667     libx264
1668     libx265
1669     libxavs
1670     libxvid
1671 "
1672
1673 EXTERNAL_LIBRARY_NONFREE_LIST="
1674     decklink
1675     libndi_newtek
1676     libfdk_aac
1677     openssl
1678     libtls
1679 "
1680
1681 EXTERNAL_LIBRARY_VERSION3_LIST="
1682     gmp
1683     liblensfun
1684     libopencore_amrnb
1685     libopencore_amrwb
1686     libvmaf
1687     libvo_amrwbenc
1688     mbedtls
1689     rkmpp
1690 "
1691
1692 EXTERNAL_LIBRARY_GPLV3_LIST="
1693     libsmbclient
1694 "
1695
1696 EXTERNAL_LIBRARY_LIST="
1697     $EXTERNAL_LIBRARY_GPL_LIST
1698     $EXTERNAL_LIBRARY_NONFREE_LIST
1699     $EXTERNAL_LIBRARY_VERSION3_LIST
1700     $EXTERNAL_LIBRARY_GPLV3_LIST
1701     chromaprint
1702     gcrypt
1703     gnutls
1704     jni
1705     ladspa
1706     libaom
1707     libass
1708     libbluray
1709     libbs2b
1710     libcaca
1711     libcelt
1712     libcodec2
1713     libdc1394
1714     libdrm
1715     libflite
1716     libfontconfig
1717     libfreetype
1718     libfribidi
1719     libgme
1720     libgsm
1721     libiec61883
1722     libilbc
1723     libjack
1724     libkvazaar
1725     libmodplug
1726     libmp3lame
1727     libmysofa
1728     libopencv
1729     libopenh264
1730     libopenjpeg
1731     libopenmpt
1732     libopus
1733     libpulse
1734     librsvg
1735     librtmp
1736     libshine
1737     libsmbclient
1738     libsnappy
1739     libsoxr
1740     libspeex
1741     libsrt
1742     libssh
1743     libtensorflow
1744     libtesseract
1745     libtheora
1746     libtwolame
1747     libv4l2
1748     libvorbis
1749     libvpx
1750     libwavpack
1751     libwebp
1752     libxml2
1753     libzimg
1754     libzmq
1755     libzvbi
1756     lv2
1757     mediacodec
1758     openal
1759     opengl
1760     vapoursynth
1761 "
1762
1763 HWACCEL_AUTODETECT_LIBRARY_LIST="
1764     amf
1765     audiotoolbox
1766     crystalhd
1767     cuda
1768     cuvid
1769     d3d11va
1770     dxva2
1771     ffnvcodec
1772     nvdec
1773     nvenc
1774     vaapi
1775     vdpau
1776     videotoolbox
1777     v4l2_m2m
1778     xvmc
1779 "
1780
1781 # catchall list of things that require external libs to link
1782 EXTRALIBS_LIST="
1783     cpu_init
1784     cws2fws
1785 "
1786
1787 HWACCEL_LIBRARY_NONFREE_LIST="
1788     cuda_sdk
1789     libnpp
1790 "
1791
1792 HWACCEL_LIBRARY_LIST="
1793     $HWACCEL_LIBRARY_NONFREE_LIST
1794     libmfx
1795     mmal
1796     omx
1797     opencl
1798 "
1799
1800 DOCUMENT_LIST="
1801     doc
1802     htmlpages
1803     manpages
1804     podpages
1805     txtpages
1806 "
1807
1808 FEATURE_LIST="
1809     ftrapv
1810     gray
1811     hardcoded_tables
1812     omx_rpi
1813     runtime_cpudetect
1814     safe_bitstream_reader
1815     shared
1816     small
1817     static
1818     swscale_alpha
1819 "
1820
1821 # this list should be kept in linking order
1822 LIBRARY_LIST="
1823     avdevice
1824     avfilter
1825     swscale
1826     postproc
1827     avformat
1828     avcodec
1829     swresample
1830     avresample
1831     avutil
1832 "
1833
1834 LICENSE_LIST="
1835     gpl
1836     nonfree
1837     version3
1838 "
1839
1840 PROGRAM_LIST="
1841     ffplay
1842     ffprobe
1843     ffmpeg
1844 "
1845
1846 SUBSYSTEM_LIST="
1847     dct
1848     dwt
1849     error_resilience
1850     faan
1851     fast_unaligned
1852     fft
1853     lsp
1854     lzo
1855     mdct
1856     pixelutils
1857     network
1858     rdft
1859 "
1860
1861 # COMPONENT_LIST needs to come last to ensure correct dependency checking
1862 CONFIG_LIST="
1863     $DOCUMENT_LIST
1864     $EXAMPLE_LIST
1865     $EXTERNAL_LIBRARY_LIST
1866     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1867     $HWACCEL_LIBRARY_LIST
1868     $HWACCEL_AUTODETECT_LIBRARY_LIST
1869     $FEATURE_LIST
1870     $LICENSE_LIST
1871     $LIBRARY_LIST
1872     $PROGRAM_LIST
1873     $SUBSYSTEM_LIST
1874     autodetect
1875     fontconfig
1876     linux_perf
1877     memory_poisoning
1878     neon_clobber_test
1879     ossfuzz
1880     pic
1881     thumb
1882     valgrind_backtrace
1883     xmm_clobber_test
1884     $COMPONENT_LIST
1885 "
1886
1887 THREADS_LIST="
1888     pthreads
1889     os2threads
1890     w32threads
1891 "
1892
1893 ATOMICS_LIST="
1894     atomics_gcc
1895     atomics_suncc
1896     atomics_win32
1897 "
1898
1899 AUTODETECT_LIBS="
1900     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1901     $HWACCEL_AUTODETECT_LIBRARY_LIST
1902     $THREADS_LIST
1903 "
1904
1905 ARCH_LIST="
1906     aarch64
1907     alpha
1908     arm
1909     avr32
1910     avr32_ap
1911     avr32_uc
1912     bfin
1913     ia64
1914     m68k
1915     mips
1916     mips64
1917     parisc
1918     ppc
1919     ppc64
1920     s390
1921     sh4
1922     sparc
1923     sparc64
1924     tilegx
1925     tilepro
1926     tomi
1927     x86
1928     x86_32
1929     x86_64
1930 "
1931
1932 ARCH_EXT_LIST_ARM="
1933     armv5te
1934     armv6
1935     armv6t2
1936     armv8
1937     neon
1938     vfp
1939     vfpv3
1940     setend
1941 "
1942
1943 ARCH_EXT_LIST_MIPS="
1944     mipsfpu
1945     mips32r2
1946     mips32r5
1947     mips64r2
1948     mips32r6
1949     mips64r6
1950     mipsdsp
1951     mipsdspr2
1952     msa
1953 "
1954
1955 ARCH_EXT_LIST_LOONGSON="
1956     loongson2
1957     loongson3
1958     mmi
1959 "
1960
1961 ARCH_EXT_LIST_X86_SIMD="
1962     aesni
1963     amd3dnow
1964     amd3dnowext
1965     avx
1966     avx2
1967     avx512
1968     fma3
1969     fma4
1970     mmx
1971     mmxext
1972     sse
1973     sse2
1974     sse3
1975     sse4
1976     sse42
1977     ssse3
1978     xop
1979 "
1980
1981 ARCH_EXT_LIST_PPC="
1982     altivec
1983     dcbzl
1984     ldbrx
1985     power8
1986     ppc4xx
1987     vsx
1988 "
1989
1990 ARCH_EXT_LIST_X86="
1991     $ARCH_EXT_LIST_X86_SIMD
1992     cpunop
1993     i686
1994 "
1995
1996 ARCH_EXT_LIST="
1997     $ARCH_EXT_LIST_ARM
1998     $ARCH_EXT_LIST_PPC
1999     $ARCH_EXT_LIST_X86
2000     $ARCH_EXT_LIST_MIPS
2001     $ARCH_EXT_LIST_LOONGSON
2002 "
2003
2004 ARCH_FEATURES="
2005     aligned_stack
2006     fast_64bit
2007     fast_clz
2008     fast_cmov
2009     local_aligned
2010     simd_align_16
2011     simd_align_32
2012     simd_align_64
2013 "
2014
2015 BUILTIN_LIST="
2016     atomic_cas_ptr
2017     machine_rw_barrier
2018     MemoryBarrier
2019     mm_empty
2020     rdtsc
2021     sem_timedwait
2022     sync_val_compare_and_swap
2023 "
2024 HAVE_LIST_CMDLINE="
2025     inline_asm
2026     symver
2027     x86asm
2028 "
2029
2030 HAVE_LIST_PUB="
2031     bigendian
2032     fast_unaligned
2033 "
2034
2035 HEADERS_LIST="
2036     arpa_inet_h
2037     asm_types_h
2038     cdio_paranoia_h
2039     cdio_paranoia_paranoia_h
2040     cuda_h
2041     dispatch_dispatch_h
2042     dev_bktr_ioctl_bt848_h
2043     dev_bktr_ioctl_meteor_h
2044     dev_ic_bt8xx_h
2045     dev_video_bktr_ioctl_bt848_h
2046     dev_video_meteor_ioctl_meteor_h
2047     direct_h
2048     dirent_h
2049     dxgidebug_h
2050     dxva_h
2051     ES2_gl_h
2052     gsm_h
2053     io_h
2054     linux_perf_event_h
2055     machine_ioctl_bt848_h
2056     machine_ioctl_meteor_h
2057     malloc_h
2058     opencv2_core_core_c_h
2059     OpenGL_gl3_h
2060     poll_h
2061     sys_param_h
2062     sys_resource_h
2063     sys_select_h
2064     sys_soundcard_h
2065     sys_time_h
2066     sys_un_h
2067     sys_videoio_h
2068     termios_h
2069     udplite_h
2070     unistd_h
2071     valgrind_valgrind_h
2072     windows_h
2073     winsock2_h
2074 "
2075
2076 INTRINSICS_LIST="
2077     intrinsics_neon
2078 "
2079
2080 COMPLEX_FUNCS="
2081     cabs
2082     cexp
2083 "
2084
2085 MATH_FUNCS="
2086     atanf
2087     atan2f
2088     cbrt
2089     cbrtf
2090     copysign
2091     cosf
2092     erf
2093     exp2
2094     exp2f
2095     expf
2096     hypot
2097     isfinite
2098     isinf
2099     isnan
2100     ldexpf
2101     llrint
2102     llrintf
2103     log2
2104     log2f
2105     log10f
2106     lrint
2107     lrintf
2108     powf
2109     rint
2110     round
2111     roundf
2112     sinf
2113     trunc
2114     truncf
2115 "
2116
2117 SYSTEM_FEATURES="
2118     dos_paths
2119     libc_msvcrt
2120     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
2121     section_data_rel_ro
2122     threads
2123     uwp
2124     winrt
2125 "
2126
2127 SYSTEM_FUNCS="
2128     access
2129     aligned_malloc
2130     arc4random
2131     clock_gettime
2132     closesocket
2133     CommandLineToArgvW
2134     fcntl
2135     getaddrinfo
2136     gethrtime
2137     getopt
2138     GetProcessAffinityMask
2139     GetProcessMemoryInfo
2140     GetProcessTimes
2141     getrusage
2142     GetSystemTimeAsFileTime
2143     gettimeofday
2144     glob
2145     glXGetProcAddress
2146     gmtime_r
2147     inet_aton
2148     isatty
2149     kbhit
2150     localtime_r
2151     lstat
2152     lzo1x_999_compress
2153     mach_absolute_time
2154     MapViewOfFile
2155     memalign
2156     mkstemp
2157     mmap
2158     mprotect
2159     nanosleep
2160     PeekNamedPipe
2161     posix_memalign
2162     pthread_cancel
2163     sched_getaffinity
2164     SecItemImport
2165     SetConsoleTextAttribute
2166     SetConsoleCtrlHandler
2167     setmode
2168     setrlimit
2169     Sleep
2170     strerror_r
2171     sysconf
2172     sysctl
2173     usleep
2174     UTGetOSTypeFromString
2175     VirtualAlloc
2176     wglGetProcAddress
2177 "
2178
2179 SYSTEM_LIBRARIES="
2180     bcrypt
2181     vaapi_drm
2182     vaapi_x11
2183     vdpau_x11
2184 "
2185
2186 TOOLCHAIN_FEATURES="
2187     as_arch_directive
2188     as_dn_directive
2189     as_fpu_directive
2190     as_func
2191     as_object_arch
2192     asm_mod_q
2193     blocks_extension
2194     ebp_available
2195     ebx_available
2196     gnu_as
2197     gnu_windres
2198     ibm_asm
2199     inline_asm_direct_symbol_refs
2200     inline_asm_labels
2201     inline_asm_nonlocal_labels
2202     pragma_deprecated
2203     rsync_contimeout
2204     symver_asm_label
2205     symver_gnu_asm
2206     vfp_args
2207     xform_asm
2208     xmm_clobbers
2209 "
2210
2211 TYPES_LIST="
2212     kCMVideoCodecType_HEVC
2213     socklen_t
2214     struct_addrinfo
2215     struct_group_source_req
2216     struct_ip_mreq_source
2217     struct_ipv6_mreq
2218     struct_msghdr_msg_flags
2219     struct_pollfd
2220     struct_rusage_ru_maxrss
2221     struct_sctp_event_subscribe
2222     struct_sockaddr_in6
2223     struct_sockaddr_sa_len
2224     struct_sockaddr_storage
2225     struct_stat_st_mtim_tv_nsec
2226     struct_v4l2_frmivalenum_discrete
2227 "
2228
2229 HAVE_LIST="
2230     $ARCH_EXT_LIST
2231     $(add_suffix _external $ARCH_EXT_LIST)
2232     $(add_suffix _inline   $ARCH_EXT_LIST)
2233     $ARCH_FEATURES
2234     $BUILTIN_LIST
2235     $COMPLEX_FUNCS
2236     $HAVE_LIST_CMDLINE
2237     $HAVE_LIST_PUB
2238     $HEADERS_LIST
2239     $INTRINSICS_LIST
2240     $MATH_FUNCS
2241     $SYSTEM_FEATURES
2242     $SYSTEM_FUNCS
2243     $SYSTEM_LIBRARIES
2244     $THREADS_LIST
2245     $TOOLCHAIN_FEATURES
2246     $TYPES_LIST
2247     makeinfo
2248     makeinfo_html
2249     opencl_d3d11
2250     opencl_drm_arm
2251     opencl_drm_beignet
2252     opencl_dxva2
2253     opencl_vaapi_beignet
2254     opencl_vaapi_intel_media
2255     perl
2256     pod2man
2257     texi2html
2258 "
2259
2260 # options emitted with CONFIG_ prefix but not available on the command line
2261 CONFIG_EXTRA="
2262     aandcttables
2263     ac3dsp
2264     adts_header
2265     audio_frame_queue
2266     audiodsp
2267     blockdsp
2268     bswapdsp
2269     cabac
2270     cbs
2271     cbs_h264
2272     cbs_h265
2273     cbs_mpeg2
2274     cbs_vp9
2275     dirac_parse
2276     dnn
2277     dvprofile
2278     exif
2279     faandct
2280     faanidct
2281     fdctdsp
2282     flacdsp
2283     fmtconvert
2284     frame_thread_encoder
2285     g722dsp
2286     golomb
2287     gplv3
2288     h263dsp
2289     h264chroma
2290     h264dsp
2291     h264parse
2292     h264pred
2293     h264qpel
2294     hevcparse
2295     hpeldsp
2296     huffman
2297     huffyuvdsp
2298     huffyuvencdsp
2299     idctdsp
2300     iirfilter
2301     mdct15
2302     intrax8
2303     iso_media
2304     ividsp
2305     jpegtables
2306     lgplv3
2307     libx262
2308     llauddsp
2309     llviddsp
2310     llvidencdsp
2311     lpc
2312     lzf
2313     me_cmp
2314     mpeg_er
2315     mpegaudio
2316     mpegaudiodsp
2317     mpegaudioheader
2318     mpegvideo
2319     mpegvideoenc
2320     mss34dsp
2321     pixblockdsp
2322     qpeldsp
2323     qsv
2324     qsvdec
2325     qsvenc
2326     qsvvpp
2327     rangecoder
2328     riffdec
2329     riffenc
2330     rtpdec
2331     rtpenc_chain
2332     rv34dsp
2333     sinewin
2334     snappy
2335     srtp
2336     startcode
2337     texturedsp
2338     texturedspenc
2339     tpeldsp
2340     vaapi_1
2341     vaapi_encode
2342     vc1dsp
2343     videodsp
2344     vp3dsp
2345     vp56dsp
2346     vp8dsp
2347     wma_freqs
2348     wmv2dsp
2349 "
2350
2351 CMDLINE_SELECT="
2352     $ARCH_EXT_LIST
2353     $CONFIG_LIST
2354     $HAVE_LIST_CMDLINE
2355     $THREADS_LIST
2356     asm
2357     cross_compile
2358     debug
2359     extra_warnings
2360     logging
2361     lto
2362     optimizations
2363     rpath
2364     stripping
2365 "
2366
2367 PATHS_LIST="
2368     bindir
2369     datadir
2370     docdir
2371     incdir
2372     libdir
2373     mandir
2374     pkgconfigdir
2375     prefix
2376     shlibdir
2377     install_name_dir
2378 "
2379
2380 CMDLINE_SET="
2381     $PATHS_LIST
2382     ar
2383     arch
2384     as
2385     assert_level
2386     build_suffix
2387     cc
2388     objcc
2389     cpu
2390     cross_prefix
2391     custom_allocator
2392     cxx
2393     dep_cc
2394     doxygen
2395     env
2396     extra_version
2397     gas
2398     host_cc
2399     host_cflags
2400     host_extralibs
2401     host_ld
2402     host_ldflags
2403     host_os
2404     ignore_tests
2405     install
2406     ld
2407     ln_s
2408     logfile
2409     malloc_prefix
2410     nm
2411     optflags
2412     nvcc
2413     nvccflags
2414     pkg_config
2415     pkg_config_flags
2416     progs_suffix
2417     random_seed
2418     ranlib
2419     samples
2420     strip
2421     sws_max_filter_size
2422     sysinclude
2423     sysroot
2424     target_exec
2425     target_os
2426     target_path
2427     target_samples
2428     tempprefix
2429     toolchain
2430     valgrind
2431     x86asmexe
2432 "
2433
2434 CMDLINE_APPEND="
2435     extra_cflags
2436     extra_cxxflags
2437     extra_objcflags
2438     host_cppflags
2439 "
2440
2441 # code dependency declarations
2442
2443 # architecture extensions
2444
2445 armv5te_deps="arm"
2446 armv6_deps="arm"
2447 armv6t2_deps="arm"
2448 armv8_deps="aarch64"
2449 neon_deps_any="aarch64 arm"
2450 intrinsics_neon_deps="neon"
2451 vfp_deps_any="aarch64 arm"
2452 vfpv3_deps="vfp"
2453 setend_deps="arm"
2454
2455 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2456
2457 altivec_deps="ppc"
2458 dcbzl_deps="ppc"
2459 ldbrx_deps="ppc"
2460 ppc4xx_deps="ppc"
2461 vsx_deps="altivec"
2462 power8_deps="vsx"
2463
2464 loongson2_deps="mips"
2465 loongson3_deps="mips"
2466 mips32r2_deps="mips"
2467 mips32r5_deps="mips"
2468 mips32r6_deps="mips"
2469 mips64r2_deps="mips"
2470 mips64r6_deps="mips"
2471 mipsfpu_deps="mips"
2472 mipsdsp_deps="mips"
2473 mipsdspr2_deps="mips"
2474 mmi_deps="mips"
2475 msa_deps="mipsfpu"
2476
2477 cpunop_deps="i686"
2478 x86_64_select="i686"
2479 x86_64_suggest="fast_cmov"
2480
2481 amd3dnow_deps="mmx"
2482 amd3dnowext_deps="amd3dnow"
2483 i686_deps="x86"
2484 mmx_deps="x86"
2485 mmxext_deps="mmx"
2486 sse_deps="mmxext"
2487 sse2_deps="sse"
2488 sse3_deps="sse2"
2489 ssse3_deps="sse3"
2490 sse4_deps="ssse3"
2491 sse42_deps="sse4"
2492 aesni_deps="sse42"
2493 avx_deps="sse42"
2494 xop_deps="avx"
2495 fma3_deps="avx"
2496 fma4_deps="avx"
2497 avx2_deps="avx"
2498 avx512_deps="avx2"
2499
2500 mmx_external_deps="x86asm"
2501 mmx_inline_deps="inline_asm x86"
2502 mmx_suggest="mmx_external mmx_inline"
2503
2504 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2505     eval dep=\$${ext}_deps
2506     eval ${ext}_external_deps='"${dep}_external"'
2507     eval ${ext}_inline_deps='"${dep}_inline"'
2508     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2509 done
2510
2511 aligned_stack_if_any="aarch64 ppc x86"
2512 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2513 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2514 fast_unaligned_if_any="aarch64 ppc x86"
2515 simd_align_16_if_any="altivec neon sse"
2516 simd_align_32_if_any="avx"
2517 simd_align_64_if_any="avx512"
2518
2519 # system capabilities
2520 linux_perf_deps="linux_perf_event_h"
2521 symver_if_any="symver_asm_label symver_gnu_asm"
2522 valgrind_backtrace_conflict="optimizations"
2523 valgrind_backtrace_deps="valgrind_valgrind_h"
2524
2525 # threading support
2526 atomics_gcc_if="sync_val_compare_and_swap"
2527 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2528 atomics_win32_if="MemoryBarrier"
2529 atomics_native_if_any="$ATOMICS_LIST"
2530 w32threads_deps="atomics_native"
2531 threads_if_any="$THREADS_LIST"
2532
2533 # subsystems
2534 cbs_h264_select="cbs golomb"
2535 cbs_h265_select="cbs golomb"
2536 cbs_mpeg2_select="cbs"
2537 cbs_vp9_select="cbs"
2538 dct_select="rdft"
2539 dirac_parse_select="golomb"
2540 dnn_suggest="libtensorflow"
2541 error_resilience_select="me_cmp"
2542 faandct_deps="faan"
2543 faandct_select="fdctdsp"
2544 faanidct_deps="faan"
2545 faanidct_select="idctdsp"
2546 h264dsp_select="startcode"
2547 hevcparse_select="golomb"
2548 frame_thread_encoder_deps="encoders threads"
2549 intrax8_select="blockdsp idctdsp"
2550 mdct_select="fft"
2551 mdct15_select="fft"
2552 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2553 mpeg_er_select="error_resilience"
2554 mpegaudio_select="mpegaudiodsp mpegaudioheader"
2555 mpegaudiodsp_select="dct"
2556 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2557 mpegvideoenc_select="aandcttables me_cmp mpegvideo pixblockdsp qpeldsp"
2558 vc1dsp_select="h264chroma qpeldsp startcode"
2559 rdft_select="fft"
2560
2561 # decoders / encoders
2562 aac_decoder_select="adts_header mdct15 mdct sinewin"
2563 aac_fixed_decoder_select="adts_header mdct sinewin"
2564 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2565 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2566 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2567 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2568 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2569 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2570 adpcm_g722_decoder_select="g722dsp"
2571 adpcm_g722_encoder_select="g722dsp"
2572 aic_decoder_select="golomb idctdsp"
2573 alac_encoder_select="lpc"
2574 als_decoder_select="bswapdsp"
2575 amrnb_decoder_select="lsp"
2576 amrwb_decoder_select="lsp"
2577 amv_decoder_select="sp5x_decoder exif"
2578 amv_encoder_select="jpegtables mpegvideoenc"
2579 ape_decoder_select="bswapdsp llauddsp"
2580 apng_decoder_deps="zlib"
2581 apng_encoder_deps="zlib"
2582 apng_encoder_select="llvidencdsp"
2583 aptx_decoder_select="audio_frame_queue"
2584 aptx_encoder_select="audio_frame_queue"
2585 aptx_hd_decoder_select="audio_frame_queue"
2586 aptx_hd_encoder_select="audio_frame_queue"
2587 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2588 asv1_encoder_select="aandcttables bswapdsp fdctdsp pixblockdsp"
2589 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2590 asv2_encoder_select="aandcttables bswapdsp fdctdsp pixblockdsp"
2591 atrac1_decoder_select="mdct sinewin"
2592 atrac3_decoder_select="mdct"
2593 atrac3p_decoder_select="mdct sinewin"
2594 atrac9_decoder_select="mdct"
2595 avrn_decoder_select="exif jpegtables"
2596 bink_decoder_select="blockdsp hpeldsp"
2597 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2598 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2599 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2600 clearvideo_decoder_select="idctdsp"
2601 cllc_decoder_select="bswapdsp"
2602 comfortnoise_encoder_select="lpc"
2603 cook_decoder_select="audiodsp mdct sinewin"
2604 cscd_decoder_select="lzo"
2605 cscd_decoder_suggest="zlib"
2606 dca_decoder_select="mdct"
2607 dds_decoder_select="texturedsp"
2608 dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
2609 dnxhd_decoder_select="blockdsp idctdsp"
2610 dnxhd_encoder_select="blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2611 dolby_e_decoder_select="mdct"
2612 dvvideo_decoder_select="dvprofile idctdsp"
2613 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2614 dxa_decoder_deps="zlib"
2615 dxv_decoder_select="lzf texturedsp"
2616 eac3_decoder_select="ac3_decoder"
2617 eac3_encoder_select="ac3_encoder"
2618 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2619 eatgq_decoder_select="aandcttables"
2620 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2621 exr_decoder_deps="zlib"
2622 ffv1_decoder_select="rangecoder"
2623 ffv1_encoder_select="rangecoder"
2624 ffvhuff_decoder_select="huffyuv_decoder"
2625 ffvhuff_encoder_select="huffyuv_encoder"
2626 fic_decoder_select="golomb"
2627 flac_decoder_select="flacdsp"
2628 flac_encoder_select="bswapdsp flacdsp lpc"
2629 flashsv2_decoder_deps="zlib"
2630 flashsv2_encoder_deps="zlib"
2631 flashsv_decoder_deps="zlib"
2632 flashsv_encoder_deps="zlib"
2633 flv_decoder_select="h263_decoder"
2634 flv_encoder_select="h263_encoder"
2635 fourxm_decoder_select="blockdsp bswapdsp"
2636 fraps_decoder_select="bswapdsp huffman"
2637 g2m_decoder_deps="zlib"
2638 g2m_decoder_select="blockdsp idctdsp jpegtables"
2639 g729_decoder_select="audiodsp"
2640 h261_decoder_select="mpegvideo"
2641 h261_encoder_select="mpegvideoenc"
2642 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2643 h263_encoder_select="h263dsp mpegvideoenc"
2644 h263i_decoder_select="h263_decoder"
2645 h263p_decoder_select="h263_decoder"
2646 h263p_encoder_select="h263_encoder"
2647 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
2648 h264_decoder_suggest="error_resilience"
2649 hap_decoder_select="snappy texturedsp"
2650 hap_encoder_deps="libsnappy"
2651 hap_encoder_select="texturedspenc"
2652 hevc_decoder_select="bswapdsp cabac golomb hevcparse videodsp"
2653 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2654 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llvidencdsp"
2655 iac_decoder_select="imc_decoder"
2656 imc_decoder_select="bswapdsp fft mdct sinewin"
2657 indeo3_decoder_select="hpeldsp"
2658 indeo4_decoder_select="ividsp"
2659 indeo5_decoder_select="ividsp"
2660 interplay_video_decoder_select="hpeldsp"
2661 jpegls_decoder_select="mjpeg_decoder"
2662 jv_decoder_select="blockdsp"
2663 lagarith_decoder_select="llviddsp"
2664 ljpeg_encoder_select="idctdsp jpegtables mpegvideoenc"
2665 magicyuv_decoder_select="llviddsp"
2666 magicyuv_encoder_select="llvidencdsp"
2667 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2668 metasound_decoder_select="lsp mdct sinewin"
2669 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2670 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2671 mjpeg_encoder_select="jpegtables mpegvideoenc"
2672 mjpegb_decoder_select="mjpeg_decoder"
2673 mlp_decoder_select="mlp_parser"
2674 mlp_encoder_select="lpc"
2675 motionpixels_decoder_select="bswapdsp"
2676 mp1_decoder_select="mpegaudio"
2677 mp1float_decoder_select="mpegaudio"
2678 mp2_decoder_select="mpegaudio"
2679 mp2float_decoder_select="mpegaudio"
2680 mp3_decoder_select="mpegaudio"
2681 mp3adu_decoder_select="mpegaudio"
2682 mp3adufloat_decoder_select="mpegaudio"
2683 mp3float_decoder_select="mpegaudio"
2684 mp3on4_decoder_select="mpegaudio"
2685 mp3on4float_decoder_select="mpegaudio"
2686 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2687 mpc8_decoder_select="mpegaudiodsp"
2688 mpegvideo_decoder_select="mpegvideo"
2689 mpeg1video_decoder_select="mpegvideo"
2690 mpeg1video_encoder_select="mpegvideoenc h263dsp"
2691 mpeg2video_decoder_select="mpegvideo"
2692 mpeg2video_encoder_select="mpegvideoenc h263dsp"
2693 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2694 mpeg4_encoder_select="h263_encoder"
2695 msa1_decoder_select="mss34dsp"
2696 mscc_decoder_deps="zlib"
2697 msmpeg4v1_decoder_select="h263_decoder"
2698 msmpeg4v2_decoder_select="h263_decoder"
2699 msmpeg4v2_encoder_select="h263_encoder"
2700 msmpeg4v3_decoder_select="h263_decoder"
2701 msmpeg4v3_encoder_select="h263_encoder"
2702 mss2_decoder_select="mpegvideo qpeldsp vc1_decoder"
2703 mts2_decoder_select="mss34dsp"
2704 mwsc_decoder_deps="zlib"
2705 mxpeg_decoder_select="mjpeg_decoder"
2706 nellymoser_decoder_select="mdct sinewin"
2707 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2708 nuv_decoder_select="idctdsp lzo"
2709 on2avc_decoder_select="mdct"
2710 opus_decoder_deps="swresample"
2711 opus_decoder_select="mdct15"
2712 opus_encoder_select="audio_frame_queue mdct15"
2713 png_decoder_deps="zlib"
2714 png_encoder_deps="zlib"
2715 png_encoder_select="llvidencdsp"
2716 prores_decoder_select="blockdsp idctdsp"
2717 prores_encoder_select="fdctdsp"
2718 qcelp_decoder_select="lsp"
2719 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2720 ra_144_decoder_select="audiodsp"
2721 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2722 ralf_decoder_select="golomb"
2723 rawvideo_decoder_select="bswapdsp"
2724 rscc_decoder_deps="zlib"
2725 rtjpeg_decoder_select="me_cmp"
2726 rv10_decoder_select="h263_decoder"
2727 rv10_encoder_select="h263_encoder"
2728 rv20_decoder_select="h263_decoder"
2729 rv20_encoder_select="h263_encoder"
2730 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2731 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2732 screenpresso_decoder_deps="zlib"
2733 shorten_decoder_select="bswapdsp"
2734 sipr_decoder_select="lsp"
2735 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2736 snow_encoder_select="dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2737 sonic_decoder_select="golomb rangecoder"
2738 sonic_encoder_select="golomb rangecoder"
2739 sonic_ls_encoder_select="golomb rangecoder"
2740 sp5x_decoder_select="mjpeg_decoder"
2741 srgc_decoder_deps="zlib"
2742 svq1_decoder_select="hpeldsp"
2743 svq1_encoder_select="hpeldsp me_cmp mpegvideoenc"
2744 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2745 svq3_decoder_suggest="zlib"
2746 tak_decoder_select="audiodsp"
2747 tdsc_decoder_deps="zlib"
2748 tdsc_decoder_select="mjpeg_decoder"
2749 theora_decoder_select="vp3_decoder"
2750 thp_decoder_select="mjpeg_decoder"
2751 tiff_decoder_suggest="zlib lzma"
2752 tiff_encoder_suggest="zlib"
2753 truehd_decoder_select="mlp_parser"
2754 truehd_encoder_select="lpc"
2755 truemotion2_decoder_select="bswapdsp"
2756 truespeech_decoder_select="bswapdsp"
2757 tscc_decoder_deps="zlib"
2758 twinvq_decoder_select="mdct lsp sinewin"
2759 txd_decoder_select="texturedsp"
2760 utvideo_decoder_select="bswapdsp llviddsp"
2761 utvideo_encoder_select="bswapdsp huffman llvidencdsp"
2762 vble_decoder_select="llviddsp"
2763 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 mpegvideo vc1dsp"
2764 vc1image_decoder_select="vc1_decoder"
2765 vorbis_decoder_select="mdct"
2766 vorbis_encoder_select="audio_frame_queue mdct"
2767 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2768 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2769 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2770 vp6a_decoder_select="vp6_decoder"
2771 vp6f_decoder_select="vp6_decoder"
2772 vp7_decoder_select="h264pred videodsp vp8dsp"
2773 vp8_decoder_select="h264pred videodsp vp8dsp"
2774 vp9_decoder_select="videodsp vp9_parser vp9_superframe_split_bsf"
2775 wcmv_decoder_deps="zlib"
2776 webp_decoder_select="vp8_decoder exif"
2777 wmalossless_decoder_select="llauddsp"
2778 wmapro_decoder_select="mdct sinewin wma_freqs"
2779 wmav1_decoder_select="mdct sinewin wma_freqs"
2780 wmav1_encoder_select="mdct sinewin wma_freqs"
2781 wmav2_decoder_select="mdct sinewin wma_freqs"
2782 wmav2_encoder_select="mdct sinewin wma_freqs"
2783 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2784 wmv1_decoder_select="h263_decoder"
2785 wmv1_encoder_select="h263_encoder"
2786 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2787 wmv2_encoder_select="h263_encoder wmv2dsp"
2788 wmv3_decoder_select="vc1_decoder"
2789 wmv3image_decoder_select="wmv3_decoder"
2790 xma1_decoder_select="wmapro_decoder"
2791 xma2_decoder_select="wmapro_decoder"
2792 zerocodec_decoder_deps="zlib"
2793 zlib_decoder_deps="zlib"
2794 zlib_encoder_deps="zlib"
2795 zmbv_decoder_deps="zlib"
2796 zmbv_encoder_deps="zlib"
2797
2798 # hardware accelerators
2799 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2800 cuda_deps="ffnvcodec"
2801 cuvid_deps="ffnvcodec"
2802 d3d11va_deps="dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2803 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode ole32 user32"
2804 ffnvcodec_deps_any="libdl LoadLibrary"
2805 nvdec_deps="ffnvcodec"
2806 videotoolbox_hwaccel_deps="videotoolbox pthreads"
2807 videotoolbox_hwaccel_extralibs="-framework QuartzCore"
2808 xvmc_deps="X11_extensions_XvMClib_h"
2809
2810 h263_vaapi_hwaccel_deps="vaapi"
2811 h263_vaapi_hwaccel_select="h263_decoder"
2812 h263_videotoolbox_hwaccel_deps="videotoolbox"
2813 h263_videotoolbox_hwaccel_select="h263_decoder"
2814 h264_d3d11va_hwaccel_deps="d3d11va"
2815 h264_d3d11va_hwaccel_select="h264_decoder"
2816 h264_d3d11va2_hwaccel_deps="d3d11va"
2817 h264_d3d11va2_hwaccel_select="h264_decoder"
2818 h264_dxva2_hwaccel_deps="dxva2"
2819 h264_dxva2_hwaccel_select="h264_decoder"
2820 h264_nvdec_hwaccel_deps="nvdec"
2821 h264_nvdec_hwaccel_select="h264_decoder"
2822 h264_vaapi_hwaccel_deps="vaapi"
2823 h264_vaapi_hwaccel_select="h264_decoder"
2824 h264_vdpau_hwaccel_deps="vdpau"
2825 h264_vdpau_hwaccel_select="h264_decoder"
2826 h264_videotoolbox_hwaccel_deps="videotoolbox"
2827 h264_videotoolbox_hwaccel_select="h264_decoder"
2828 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2829 hevc_d3d11va_hwaccel_select="hevc_decoder"
2830 hevc_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2831 hevc_d3d11va2_hwaccel_select="hevc_decoder"
2832 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2833 hevc_dxva2_hwaccel_select="hevc_decoder"
2834 hevc_nvdec_hwaccel_deps="nvdec"
2835 hevc_nvdec_hwaccel_select="hevc_decoder"
2836 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2837 hevc_vaapi_hwaccel_select="hevc_decoder"
2838 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2839 hevc_vdpau_hwaccel_select="hevc_decoder"
2840 hevc_videotoolbox_hwaccel_deps="videotoolbox"
2841 hevc_videotoolbox_hwaccel_select="hevc_decoder"
2842 mjpeg_nvdec_hwaccel_deps="nvdec"
2843 mjpeg_nvdec_hwaccel_select="mjpeg_decoder"
2844 mjpeg_vaapi_hwaccel_deps="vaapi"
2845 mjpeg_vaapi_hwaccel_select="mjpeg_decoder"
2846 mpeg_xvmc_hwaccel_deps="xvmc"
2847 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2848 mpeg1_nvdec_hwaccel_deps="nvdec"
2849 mpeg1_nvdec_hwaccel_select="mpeg1video_decoder"
2850 mpeg1_vdpau_hwaccel_deps="vdpau"
2851 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2852 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2853 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2854 mpeg1_xvmc_hwaccel_deps="xvmc"
2855 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2856 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2857 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2858 mpeg2_d3d11va2_hwaccel_deps="d3d11va"
2859 mpeg2_d3d11va2_hwaccel_select="mpeg2video_decoder"
2860 mpeg2_dxva2_hwaccel_deps="dxva2"
2861 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2862 mpeg2_nvdec_hwaccel_deps="nvdec"
2863 mpeg2_nvdec_hwaccel_select="mpeg2video_decoder"
2864 mpeg2_vaapi_hwaccel_deps="vaapi"
2865 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2866 mpeg2_vdpau_hwaccel_deps="vdpau"
2867 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2868 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2869 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2870 mpeg2_xvmc_hwaccel_deps="xvmc"
2871 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2872 mpeg4_nvdec_hwaccel_deps="nvdec"
2873 mpeg4_nvdec_hwaccel_select="mpeg4_decoder"
2874 mpeg4_vaapi_hwaccel_deps="vaapi"
2875 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2876 mpeg4_vdpau_hwaccel_deps="vdpau"
2877 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2878 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2879 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2880 vc1_d3d11va_hwaccel_deps="d3d11va"
2881 vc1_d3d11va_hwaccel_select="vc1_decoder"
2882 vc1_d3d11va2_hwaccel_deps="d3d11va"
2883 vc1_d3d11va2_hwaccel_select="vc1_decoder"
2884 vc1_dxva2_hwaccel_deps="dxva2"
2885 vc1_dxva2_hwaccel_select="vc1_decoder"
2886 vc1_nvdec_hwaccel_deps="nvdec"
2887 vc1_nvdec_hwaccel_select="vc1_decoder"
2888 vc1_vaapi_hwaccel_deps="vaapi"
2889 vc1_vaapi_hwaccel_select="vc1_decoder"
2890 vc1_vdpau_hwaccel_deps="vdpau"
2891 vc1_vdpau_hwaccel_select="vc1_decoder"
2892 vp8_nvdec_hwaccel_deps="nvdec"
2893 vp8_nvdec_hwaccel_select="vp8_decoder"
2894 vp8_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferVP8"
2895 vp8_vaapi_hwaccel_select="vp8_decoder"
2896 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2897 vp9_d3d11va_hwaccel_select="vp9_decoder"
2898 vp9_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2899 vp9_d3d11va2_hwaccel_select="vp9_decoder"
2900 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
2901 vp9_dxva2_hwaccel_select="vp9_decoder"
2902 vp9_nvdec_hwaccel_deps="nvdec"
2903 vp9_nvdec_hwaccel_select="vp9_decoder"
2904 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9_bit_depth"
2905 vp9_vaapi_hwaccel_select="vp9_decoder"
2906 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2907 wmv3_d3d11va2_hwaccel_select="vc1_d3d11va2_hwaccel"
2908 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2909 wmv3_nvdec_hwaccel_select="vc1_nvdec_hwaccel"
2910 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2911 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2912
2913 # hardware-accelerated codecs
2914 omx_deps="libdl pthreads"
2915 omx_rpi_select="omx"
2916 qsv_deps="libmfx"
2917 qsvdec_select="qsv"
2918 qsvenc_select="qsv"
2919 qsvvpp_select="qsv"
2920 vaapi_encode_deps="vaapi"
2921 v4l2_m2m_deps="linux_videodev2_h sem_timedwait"
2922
2923 hwupload_cuda_filter_deps="ffnvcodec"
2924 scale_npp_filter_deps="ffnvcodec libnpp"
2925 scale_cuda_filter_deps="cuda_sdk"
2926 thumbnail_cuda_filter_deps="cuda_sdk"
2927
2928 amf_deps_any="libdl LoadLibrary"
2929 nvenc_deps="ffnvcodec"
2930 nvenc_deps_any="libdl LoadLibrary"
2931 nvenc_encoder_deps="nvenc"
2932
2933 h263_v4l2m2m_decoder_deps="v4l2_m2m h263_v4l2_m2m"
2934 h263_v4l2m2m_encoder_deps="v4l2_m2m h263_v4l2_m2m"
2935 h264_amf_encoder_deps="amf"
2936 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2937 h264_cuvid_decoder_deps="cuvid"
2938 h264_cuvid_decoder_select="h264_mp4toannexb_bsf"
2939 h264_mediacodec_decoder_deps="mediacodec"
2940 h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
2941 h264_mmal_decoder_deps="mmal"
2942 h264_nvenc_encoder_deps="nvenc"
2943 h264_omx_encoder_deps="omx"
2944 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec"
2945 h264_qsv_encoder_select="qsvenc"
2946 h264_rkmpp_decoder_deps="rkmpp"
2947 h264_rkmpp_decoder_select="h264_mp4toannexb_bsf"
2948 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2949 h264_vaapi_encoder_select="cbs_h264 vaapi_encode"
2950 h264_v4l2m2m_decoder_deps="v4l2_m2m h264_v4l2_m2m"
2951 h264_v4l2m2m_encoder_deps="v4l2_m2m h264_v4l2_m2m"
2952 hevc_amf_encoder_deps="amf"
2953 hevc_cuvid_decoder_deps="cuvid"
2954 hevc_cuvid_decoder_select="hevc_mp4toannexb_bsf"
2955 hevc_mediacodec_decoder_deps="mediacodec"
2956 hevc_mediacodec_decoder_select="hevc_mp4toannexb_bsf hevc_parser"
2957 hevc_nvenc_encoder_deps="nvenc"
2958 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec"
2959 hevc_qsv_encoder_select="hevcparse qsvenc"
2960 hevc_rkmpp_decoder_deps="rkmpp"
2961 hevc_rkmpp_decoder_select="hevc_mp4toannexb_bsf"
2962 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2963 hevc_vaapi_encoder_select="cbs_h265 vaapi_encode"
2964 hevc_v4l2m2m_decoder_deps="v4l2_m2m hevc_v4l2_m2m"
2965 hevc_v4l2m2m_encoder_deps="v4l2_m2m hevc_v4l2_m2m"
2966 mjpeg_cuvid_decoder_deps="cuvid"
2967 mjpeg_qsv_encoder_deps="libmfx"
2968 mjpeg_qsv_encoder_select="qsvenc"
2969 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2970 mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
2971 mpeg1_cuvid_decoder_deps="cuvid"
2972 mpeg1_v4l2m2m_decoder_deps="v4l2_m2m mpeg1_v4l2_m2m"
2973 mpeg2_crystalhd_decoder_select="crystalhd"
2974 mpeg2_cuvid_decoder_deps="cuvid"
2975 mpeg2_mmal_decoder_deps="mmal"
2976 mpeg2_mediacodec_decoder_deps="mediacodec"
2977 mpeg2_qsv_decoder_select="qsvdec mpegvideo_parser"
2978 mpeg2_qsv_encoder_select="qsvenc"
2979 mpeg2_vaapi_encoder_deps="VAEncPictureParameterBufferMPEG2"
2980 mpeg2_vaapi_encoder_select="cbs_mpeg2 vaapi_encode"
2981 mpeg2_v4l2m2m_decoder_deps="v4l2_m2m mpeg2_v4l2_m2m"
2982 mpeg4_crystalhd_decoder_select="crystalhd"
2983 mpeg4_cuvid_decoder_deps="cuvid"
2984 mpeg4_mediacodec_decoder_deps="mediacodec"
2985 mpeg4_mmal_decoder_deps="mmal"
2986 mpeg4_omx_encoder_deps="omx"
2987 mpeg4_v4l2m2m_decoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
2988 mpeg4_v4l2m2m_encoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
2989 msmpeg4_crystalhd_decoder_select="crystalhd"
2990 nvenc_h264_encoder_select="h264_nvenc_encoder"
2991 nvenc_hevc_encoder_select="hevc_nvenc_encoder"
2992 vc1_crystalhd_decoder_select="crystalhd"
2993 vc1_cuvid_decoder_deps="cuvid"
2994 vc1_mmal_decoder_deps="mmal"
2995 vc1_qsv_decoder_select="qsvdec vc1_parser"
2996 vc1_v4l2m2m_decoder_deps="v4l2_m2m vc1_v4l2_m2m"
2997 vp8_cuvid_decoder_deps="cuvid"
2998 vp8_mediacodec_decoder_deps="mediacodec"
2999 vp8_qsv_decoder_select="qsvdec vp8_parser"
3000 vp8_rkmpp_decoder_deps="rkmpp"
3001 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
3002 vp8_vaapi_encoder_select="vaapi_encode"
3003 vp8_v4l2m2m_decoder_deps="v4l2_m2m vp8_v4l2_m2m"
3004 vp8_v4l2m2m_encoder_deps="v4l2_m2m vp8_v4l2_m2m"
3005 vp9_cuvid_decoder_deps="cuvid"
3006 vp9_mediacodec_decoder_deps="mediacodec"
3007 vp9_rkmpp_decoder_deps="rkmpp"
3008 vp9_vaapi_encoder_deps="VAEncPictureParameterBufferVP9"
3009 vp9_vaapi_encoder_select="vaapi_encode"
3010 vp9_v4l2m2m_decoder_deps="v4l2_m2m vp9_v4l2_m2m"
3011 wmv3_crystalhd_decoder_select="crystalhd"
3012
3013 # parsers
3014 aac_parser_select="adts_header"
3015 h264_parser_select="golomb h264dsp h264parse"
3016 hevc_parser_select="hevcparse"
3017 mpegaudio_parser_select="mpegaudioheader"
3018 mpegvideo_parser_select="mpegvideo"
3019 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
3020 vc1_parser_select="vc1dsp"
3021
3022 # bitstream_filters
3023 aac_adtstoasc_bsf_select="adts_header"
3024 eac3_core_bsf_select="ac3_parser"
3025 filter_units_bsf_select="cbs"
3026 h264_metadata_bsf_deps="const_nan"
3027 h264_metadata_bsf_select="cbs_h264"
3028 h264_redundant_pps_bsf_select="cbs_h264"
3029 hevc_metadata_bsf_select="cbs_h265"
3030 mjpeg2jpeg_bsf_select="jpegtables"
3031 mpeg2_metadata_bsf_select="cbs_mpeg2"
3032 trace_headers_bsf_select="cbs"
3033 vp9_metadata_bsf_select="cbs_vp9"
3034
3035 # external libraries
3036 aac_at_decoder_deps="audiotoolbox"
3037 aac_at_decoder_select="aac_adtstoasc_bsf"
3038 ac3_at_decoder_deps="audiotoolbox"
3039 ac3_at_decoder_select="ac3_parser"
3040 adpcm_ima_qt_at_decoder_deps="audiotoolbox"
3041 alac_at_decoder_deps="audiotoolbox"
3042 amr_nb_at_decoder_deps="audiotoolbox"
3043 avisynth_deps_any="libdl LoadLibrary"
3044 avisynth_demuxer_deps="avisynth"
3045 avisynth_demuxer_select="riffdec"
3046 eac3_at_decoder_deps="audiotoolbox"
3047 eac3_at_decoder_select="ac3_parser"
3048 gsm_ms_at_decoder_deps="audiotoolbox"
3049 ilbc_at_decoder_deps="audiotoolbox"
3050 mp1_at_decoder_deps="audiotoolbox"
3051 mp2_at_decoder_deps="audiotoolbox"
3052 mp3_at_decoder_deps="audiotoolbox"
3053 mp1_at_decoder_select="mpegaudioheader"
3054 mp2_at_decoder_select="mpegaudioheader"
3055 mp3_at_decoder_select="mpegaudioheader"
3056 pcm_alaw_at_decoder_deps="audiotoolbox"
3057 pcm_mulaw_at_decoder_deps="audiotoolbox"
3058 qdmc_at_decoder_deps="audiotoolbox"
3059 qdm2_at_decoder_deps="audiotoolbox"
3060 aac_at_encoder_deps="audiotoolbox"
3061 aac_at_encoder_select="audio_frame_queue"
3062 alac_at_encoder_deps="audiotoolbox"
3063 alac_at_encoder_select="audio_frame_queue"
3064 ilbc_at_encoder_deps="audiotoolbox"
3065 ilbc_at_encoder_select="audio_frame_queue"
3066 pcm_alaw_at_encoder_deps="audiotoolbox"
3067 pcm_alaw_at_encoder_select="audio_frame_queue"
3068 pcm_mulaw_at_encoder_deps="audiotoolbox"
3069 pcm_mulaw_at_encoder_select="audio_frame_queue"
3070 chromaprint_muxer_deps="chromaprint"
3071 h264_videotoolbox_encoder_deps="pthreads"
3072 h264_videotoolbox_encoder_select="videotoolbox_encoder"
3073 hevc_videotoolbox_encoder_deps="pthreads"
3074 hevc_videotoolbox_encoder_select="videotoolbox_encoder"
3075 libaom_av1_decoder_deps="libaom"
3076 libaom_av1_encoder_deps="libaom"
3077 libaom_av1_encoder_select="extract_extradata_bsf"
3078 libcelt_decoder_deps="libcelt"
3079 libcodec2_decoder_deps="libcodec2"
3080 libcodec2_encoder_deps="libcodec2"
3081 libdavs2_decoder_deps="libdavs2"
3082 libfdk_aac_decoder_deps="libfdk_aac"
3083 libfdk_aac_encoder_deps="libfdk_aac"
3084 libfdk_aac_encoder_select="audio_frame_queue"
3085 libgme_demuxer_deps="libgme"
3086 libgsm_decoder_deps="libgsm"
3087 libgsm_encoder_deps="libgsm"
3088 libgsm_ms_decoder_deps="libgsm"
3089 libgsm_ms_encoder_deps="libgsm"
3090 libilbc_decoder_deps="libilbc"
3091 libilbc_encoder_deps="libilbc"
3092 libkvazaar_encoder_deps="libkvazaar"
3093 libmodplug_demuxer_deps="libmodplug"
3094 libmp3lame_encoder_deps="libmp3lame"
3095 libmp3lame_encoder_select="audio_frame_queue mpegaudioheader"
3096 libopencore_amrnb_decoder_deps="libopencore_amrnb"
3097 libopencore_amrnb_encoder_deps="libopencore_amrnb"
3098 libopencore_amrnb_encoder_select="audio_frame_queue"
3099 libopencore_amrwb_decoder_deps="libopencore_amrwb"
3100 libopenh264_decoder_deps="libopenh264"
3101 libopenh264_decoder_select="h264_mp4toannexb_bsf"
3102 libopenh264_encoder_deps="libopenh264"
3103 libopenjpeg_decoder_deps="libopenjpeg"
3104 libopenjpeg_encoder_deps="libopenjpeg"
3105 libopenmpt_demuxer_deps="libopenmpt"
3106 libopus_decoder_deps="libopus"
3107 libopus_encoder_deps="libopus"
3108 libopus_encoder_select="audio_frame_queue"
3109 librsvg_decoder_deps="librsvg"
3110 libshine_encoder_deps="libshine"
3111 libshine_encoder_select="audio_frame_queue"
3112 libspeex_decoder_deps="libspeex"
3113 libspeex_encoder_deps="libspeex"
3114 libspeex_encoder_select="audio_frame_queue"
3115 libtheora_encoder_deps="libtheora"
3116 libtwolame_encoder_deps="libtwolame"
3117 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
3118 libvorbis_decoder_deps="libvorbis"
3119 libvorbis_encoder_deps="libvorbis libvorbisenc"
3120 libvorbis_encoder_select="audio_frame_queue"
3121 libvpx_vp8_decoder_deps="libvpx"
3122 libvpx_vp8_encoder_deps="libvpx"
3123 libvpx_vp9_decoder_deps="libvpx"
3124 libvpx_vp9_encoder_deps="libvpx"
3125 libwavpack_encoder_deps="libwavpack"
3126 libwavpack_encoder_select="audio_frame_queue"
3127 libwebp_encoder_deps="libwebp"
3128 libwebp_anim_encoder_deps="libwebp"
3129 libx262_encoder_deps="libx262"
3130 libx264_encoder_deps="libx264"
3131 libx264rgb_encoder_deps="libx264 x264_csp_bgr"
3132 libx264rgb_encoder_select="libx264_encoder"
3133 libx265_encoder_deps="libx265"
3134 libxavs_encoder_deps="libxavs"
3135 libxvid_encoder_deps="libxvid"
3136 libzvbi_teletext_decoder_deps="libzvbi"
3137 vapoursynth_demuxer_deps="vapoursynth"
3138 videotoolbox_suggest="coreservices"
3139 videotoolbox_deps="corefoundation coremedia corevideo"
3140 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
3141
3142 # demuxers / muxers
3143 ac3_demuxer_select="ac3_parser"
3144 aiff_muxer_select="iso_media"
3145 asf_demuxer_select="riffdec"
3146 asf_o_demuxer_select="riffdec"
3147 asf_muxer_select="riffenc"
3148 asf_stream_muxer_select="asf_muxer"
3149 avi_demuxer_select="iso_media riffdec exif"
3150 avi_muxer_select="riffenc"
3151 caf_demuxer_select="iso_media riffdec"
3152 caf_muxer_select="iso_media"
3153 dash_muxer_select="mp4_muxer"
3154 dash_demuxer_deps="libxml2"
3155 dirac_demuxer_select="dirac_parser"
3156 dts_demuxer_select="dca_parser"
3157 dtshd_demuxer_select="dca_parser"
3158 dv_demuxer_select="dvprofile"
3159 dv_muxer_select="dvprofile"
3160 dxa_demuxer_select="riffdec"
3161 eac3_demuxer_select="ac3_parser"
3162 f4v_muxer_select="mov_muxer"
3163 fifo_muxer_deps="threads"
3164 flac_demuxer_select="flac_parser"
3165 hds_muxer_select="flv_muxer"
3166 hls_muxer_select="mpegts_muxer"
3167 hls_muxer_suggest="gcrypt openssl"
3168 image2_alias_pix_demuxer_select="image2_demuxer"
3169 image2_brender_pix_demuxer_select="image2_demuxer"
3170 ipod_muxer_select="mov_muxer"
3171 ismv_muxer_select="mov_muxer"
3172 matroska_audio_muxer_select="matroska_muxer"
3173 matroska_demuxer_select="iso_media riffdec"
3174 matroska_demuxer_suggest="bzlib lzo zlib"
3175 matroska_muxer_select="iso_media riffenc"
3176 mmf_muxer_select="riffenc"
3177 mov_demuxer_select="iso_media riffdec"
3178 mov_demuxer_suggest="zlib"
3179 mov_muxer_select="iso_media riffenc rtpenc_chain"
3180 mp3_demuxer_select="mpegaudio_parser"
3181 mp3_muxer_select="mpegaudioheader"
3182 mp4_muxer_select="mov_muxer"
3183 mpegts_demuxer_select="iso_media"
3184 mpegts_muxer_select="adts_muxer latm_muxer"
3185 mpegtsraw_demuxer_select="mpegts_demuxer"
3186 mxf_d10_muxer_select="mxf_muxer"
3187 mxf_opatom_muxer_select="mxf_muxer"
3188 nut_muxer_select="riffenc"
3189 nuv_demuxer_select="riffdec"
3190 oga_muxer_select="ogg_muxer"
3191 ogg_demuxer_select="dirac_parse"
3192 ogv_muxer_select="ogg_muxer"
3193 opus_muxer_select="ogg_muxer"
3194 psp_muxer_select="mov_muxer"
3195 rtp_demuxer_select="sdp_demuxer"
3196 rtp_muxer_select="golomb"
3197 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
3198 rtsp_demuxer_select="http_protocol rtpdec"
3199 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
3200 sap_demuxer_select="sdp_demuxer"
3201 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
3202 sdp_demuxer_select="rtpdec"
3203 smoothstreaming_muxer_select="ismv_muxer"
3204 spdif_demuxer_select="adts_header"
3205 spdif_muxer_select="adts_header"
3206 spx_muxer_select="ogg_muxer"
3207 swf_demuxer_suggest="zlib"
3208 tak_demuxer_select="tak_parser"
3209 tg2_muxer_select="mov_muxer"
3210 tgp_muxer_select="mov_muxer"
3211 vobsub_demuxer_select="mpegps_demuxer"
3212 w64_demuxer_select="wav_demuxer"
3213 w64_muxer_select="wav_muxer"
3214 wav_demuxer_select="riffdec"
3215 wav_muxer_select="riffenc"
3216 webm_muxer_select="iso_media riffenc"
3217 webm_dash_manifest_demuxer_select="matroska_demuxer"
3218 wtv_demuxer_select="mpegts_demuxer riffdec"
3219 wtv_muxer_select="mpegts_muxer riffenc"
3220 xmv_demuxer_select="riffdec"
3221 xwma_demuxer_select="riffdec"
3222
3223 # indevs / outdevs
3224 android_camera_indev_deps="android camera2ndk mediandk pthreads"
3225 android_camera_indev_extralibs="-landroid -lcamera2ndk -lmediandk"
3226 alsa_indev_deps="alsa"
3227 alsa_outdev_deps="alsa"
3228 avfoundation_indev_deps="avfoundation corevideo coremedia pthreads"
3229 avfoundation_indev_suggest="coregraphics applicationservices"
3230 avfoundation_indev_extralibs="-framework Foundation"
3231 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
3232 caca_outdev_deps="libcaca"
3233 decklink_deps_any="libdl LoadLibrary"
3234 decklink_indev_deps="decklink threads"
3235 decklink_indev_extralibs="-lstdc++"
3236 decklink_outdev_deps="decklink threads"
3237 decklink_outdev_extralibs="-lstdc++"
3238 libndi_newtek_indev_deps="libndi_newtek"
3239 libndi_newtek_indev_extralibs="-lndi"
3240 libndi_newtek_outdev_deps="libndi_newtek"
3241 libndi_newtek_outdev_extralibs="-lndi"
3242 dshow_indev_deps="IBaseFilter"
3243 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
3244 fbdev_indev_deps="linux_fb_h"
3245 fbdev_outdev_deps="linux_fb_h"
3246 gdigrab_indev_deps="CreateDIBSection"
3247 gdigrab_indev_extralibs="-lgdi32"
3248 gdigrab_indev_select="bmp_decoder"
3249 iec61883_indev_deps="libiec61883"
3250 jack_indev_deps="libjack"
3251 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
3252 kmsgrab_indev_deps="libdrm"
3253 lavfi_indev_deps="avfilter"
3254 libcdio_indev_deps="libcdio"
3255 libdc1394_indev_deps="libdc1394"
3256 openal_indev_deps="openal"
3257 opengl_outdev_deps="opengl"
3258 oss_indev_deps_any="sys_soundcard_h"
3259 oss_outdev_deps_any="sys_soundcard_h"
3260 pulse_indev_deps="libpulse"
3261 pulse_outdev_deps="libpulse"
3262 sdl2_outdev_deps="sdl2"
3263 sndio_indev_deps="sndio"
3264 sndio_outdev_deps="sndio"
3265 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
3266 v4l2_indev_suggest="libv4l2"
3267 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
3268 v4l2_outdev_suggest="libv4l2"
3269 vfwcap_indev_deps="vfw32 vfwcap_defines"
3270 xcbgrab_indev_deps="libxcb"
3271 xcbgrab_indev_suggest="libxcb_shm libxcb_shape libxcb_xfixes"
3272 xv_outdev_deps="xlib"
3273
3274 # protocols
3275 async_protocol_deps="threads"
3276 bluray_protocol_deps="libbluray"
3277 ffrtmpcrypt_protocol_conflict="librtmp_protocol"
3278 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl mbedtls"
3279 ffrtmpcrypt_protocol_select="tcp_protocol"
3280 ffrtmphttp_protocol_conflict="librtmp_protocol"
3281 ffrtmphttp_protocol_select="http_protocol"
3282 ftp_protocol_select="tcp_protocol"
3283 gopher_protocol_select="network"
3284 http_protocol_select="tcp_protocol"
3285 http_protocol_suggest="zlib"
3286 httpproxy_protocol_select="tcp_protocol"
3287 httpproxy_protocol_suggest="zlib"
3288 https_protocol_select="tls_protocol"
3289 https_protocol_suggest="zlib"
3290 icecast_protocol_select="http_protocol"
3291 librtmp_protocol_deps="librtmp"
3292 librtmpe_protocol_deps="librtmp"
3293 librtmps_protocol_deps="librtmp"
3294 librtmpt_protocol_deps="librtmp"
3295 librtmpte_protocol_deps="librtmp"
3296 libsmbclient_protocol_deps="libsmbclient gplv3"
3297 libssh_protocol_deps="libssh"
3298 libtls_conflict="openssl gnutls mbedtls"
3299 mmsh_protocol_select="http_protocol"
3300 mmst_protocol_select="network"
3301 libsrt_protocol_deps="libsrt"
3302 libsrt_protocol_select="network"
3303 rtmp_protocol_conflict="librtmp_protocol"
3304 rtmp_protocol_select="tcp_protocol"
3305 rtmp_protocol_suggest="zlib"
3306 rtmpe_protocol_select="ffrtmpcrypt_protocol"
3307 rtmpe_protocol_suggest="zlib"
3308 rtmps_protocol_conflict="librtmp_protocol"
3309 rtmps_protocol_select="tls_protocol"
3310 rtmps_protocol_suggest="zlib"
3311 rtmpt_protocol_select="ffrtmphttp_protocol"
3312 rtmpt_protocol_suggest="zlib"
3313 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
3314 rtmpte_protocol_suggest="zlib"
3315 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
3316 rtmpts_protocol_suggest="zlib"
3317 rtp_protocol_select="udp_protocol"
3318 schannel_conflict="openssl gnutls libtls mbedtls"
3319 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
3320 sctp_protocol_select="network"
3321 securetransport_conflict="openssl gnutls libtls mbedtls"
3322 srtp_protocol_select="rtp_protocol srtp"
3323 tcp_protocol_select="network"
3324 tls_protocol_deps_any="gnutls openssl schannel securetransport libtls mbedtls"
3325 tls_protocol_select="tcp_protocol"
3326 udp_protocol_select="network"
3327 udplite_protocol_select="network"
3328 unix_protocol_deps="sys_un_h"
3329 unix_protocol_select="network"
3330
3331 # filters
3332 afftfilt_filter_deps="avcodec"
3333 afftfilt_filter_select="fft"
3334 afir_filter_deps="avcodec"
3335 afir_filter_select="fft"
3336 amovie_filter_deps="avcodec avformat"
3337 aresample_filter_deps="swresample"
3338 ass_filter_deps="libass"
3339 atempo_filter_deps="avcodec"
3340 atempo_filter_select="rdft"
3341 avgblur_opencl_filter_deps="opencl"
3342 azmq_filter_deps="libzmq"
3343 blackframe_filter_deps="gpl"
3344 boxblur_filter_deps="gpl"
3345 boxblur_opencl_filter_deps="opencl gpl"
3346 bs2b_filter_deps="libbs2b"
3347 colormatrix_filter_deps="gpl"
3348 convolution_opencl_filter_deps="opencl"
3349 convolve_filter_deps="avcodec"
3350 convolve_filter_select="fft"
3351 coreimage_filter_deps="coreimage appkit"
3352 coreimage_filter_extralibs="-framework OpenGL"
3353 coreimagesrc_filter_deps="coreimage appkit"
3354 coreimagesrc_filter_extralibs="-framework OpenGL"
3355 cover_rect_filter_deps="avcodec avformat gpl"
3356 cropdetect_filter_deps="gpl"
3357 deconvolve_filter_deps="avcodec"
3358 deconvolve_filter_select="fft"
3359 deinterlace_qsv_filter_deps="libmfx"
3360 deinterlace_vaapi_filter_deps="vaapi"
3361 delogo_filter_deps="gpl"
3362 denoise_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3363 deshake_filter_select="pixelutils"
3364 dilation_opencl_filter_deps="opencl"
3365 drawtext_filter_deps="libfreetype"
3366 drawtext_filter_suggest="libfontconfig libfribidi"
3367 elbg_filter_deps="avcodec"
3368 eq_filter_deps="gpl"
3369 erosion_opencl_filter_deps="opencl"
3370 fftfilt_filter_deps="avcodec"
3371 fftfilt_filter_select="rdft"
3372 fftdnoiz_filter_deps="avcodec"
3373 fftdnoiz_filter_select="fft"
3374 find_rect_filter_deps="avcodec avformat gpl"
3375 firequalizer_filter_deps="avcodec"
3376 firequalizer_filter_select="rdft"
3377 flite_filter_deps="libflite"
3378 framerate_filter_select="pixelutils"
3379 frei0r_filter_deps="frei0r libdl"
3380 frei0r_src_filter_deps="frei0r libdl"
3381 fspp_filter_deps="gpl"
3382 geq_filter_deps="gpl"
3383 histeq_filter_deps="gpl"
3384 hqdn3d_filter_deps="gpl"
3385 interlace_filter_deps="gpl"
3386 kerndeint_filter_deps="gpl"
3387 ladspa_filter_deps="ladspa libdl"
3388 lensfun_filter_deps="liblensfun version3"
3389 lv2_filter_deps="lv2"
3390 mcdeint_filter_deps="avcodec gpl"
3391 movie_filter_deps="avcodec avformat"
3392 mpdecimate_filter_deps="gpl"
3393 mpdecimate_filter_select="pixelutils"
3394 mptestsrc_filter_deps="gpl"
3395 negate_filter_deps="lut_filter"
3396 nnedi_filter_deps="gpl"
3397 ocr_filter_deps="libtesseract"
3398 ocv_filter_deps="libopencv"
3399 openclsrc_filter_deps="opencl"
3400 overlay_opencl_filter_deps="opencl"
3401 overlay_qsv_filter_deps="libmfx"
3402 overlay_qsv_filter_select="qsvvpp"
3403 owdenoise_filter_deps="gpl"
3404 pan_filter_deps="swresample"
3405 perspective_filter_deps="gpl"
3406 phase_filter_deps="gpl"
3407 pp7_filter_deps="gpl"
3408 pp_filter_deps="gpl postproc"
3409 prewitt_opencl_filter_deps="opencl"
3410 procamp_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3411 program_opencl_filter_deps="opencl"
3412 pullup_filter_deps="gpl"
3413 removelogo_filter_deps="avcodec avformat swscale"
3414 repeatfields_filter_deps="gpl"
3415 resample_filter_deps="avresample"
3416 roberts_opencl_filter_deps="opencl"
3417 rubberband_filter_deps="librubberband"
3418 sab_filter_deps="gpl swscale"
3419 scale2ref_filter_deps="swscale"
3420 scale_filter_deps="swscale"
3421 scale_qsv_filter_deps="libmfx"
3422 select_filter_select="pixelutils"
3423 sharpness_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3424 showcqt_filter_deps="avcodec avformat swscale"
3425 showcqt_filter_suggest="libfontconfig libfreetype"
3426 showcqt_filter_select="fft"
3427 showfreqs_filter_deps="avcodec"
3428 showfreqs_filter_select="fft"
3429 showspectrum_filter_deps="avcodec"
3430 showspectrum_filter_select="fft"
3431 showspectrumpic_filter_deps="avcodec"
3432 showspectrumpic_filter_select="fft"
3433 signature_filter_deps="gpl avcodec avformat"
3434 smartblur_filter_deps="gpl swscale"
3435 sobel_opencl_filter_deps="opencl"
3436 sofalizer_filter_deps="libmysofa avcodec"
3437 sofalizer_filter_select="fft"
3438 spectrumsynth_filter_deps="avcodec"
3439 spectrumsynth_filter_select="fft"
3440 spp_filter_deps="gpl avcodec"
3441 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3442 sr_filter_deps="avformat swscale"
3443 sr_filter_select="dnn"
3444 stereo3d_filter_deps="gpl"
3445 subtitles_filter_deps="avformat avcodec libass"
3446 super2xsai_filter_deps="gpl"
3447 pixfmts_super2xsai_test_deps="super2xsai_filter"
3448 tinterlace_filter_deps="gpl"
3449 tinterlace_merge_test_deps="tinterlace_filter"
3450 tinterlace_pad_test_deps="tinterlace_filter"
3451 tonemap_filter_deps="const_nan"
3452 tonemap_opencl_filter_deps="opencl const_nan"
3453 unsharp_opencl_filter_deps="opencl"
3454 uspp_filter_deps="gpl avcodec"
3455 vaguedenoiser_filter_deps="gpl"
3456 vidstabdetect_filter_deps="libvidstab"
3457 vidstabtransform_filter_deps="libvidstab"
3458 libvmaf_filter_deps="libvmaf pthreads"
3459 zmq_filter_deps="libzmq"
3460 zoompan_filter_deps="swscale"
3461 zscale_filter_deps="libzimg const_nan"
3462 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3463 vpp_qsv_filter_deps="libmfx"
3464 vpp_qsv_filter_select="qsvvpp"
3465
3466 # examples
3467 avio_dir_cmd_deps="avformat avutil"
3468 avio_reading_deps="avformat avcodec avutil"
3469 decode_audio_example_deps="avcodec avutil"
3470 decode_video_example_deps="avcodec avutil"
3471 demuxing_decoding_example_deps="avcodec avformat avutil"
3472 encode_audio_example_deps="avcodec avutil"
3473 encode_video_example_deps="avcodec avutil"
3474 extract_mvs_example_deps="avcodec avformat avutil"
3475 filter_audio_example_deps="avfilter avutil"
3476 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3477 filtering_video_example_deps="avfilter avcodec avformat avutil"
3478 http_multiclient_example_deps="avformat avutil fork"
3479 hw_decode_example_deps="avcodec avformat avutil"
3480 metadata_example_deps="avformat avutil"
3481 muxing_example_deps="avcodec avformat avutil swscale"
3482 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
3483 remuxing_example_deps="avcodec avformat avutil"
3484 resampling_audio_example_deps="avutil swresample"
3485 scaling_video_example_deps="avutil swscale"
3486 transcode_aac_example_deps="avcodec avformat swresample"
3487 transcoding_example_deps="avfilter avcodec avformat avutil"
3488 vaapi_encode_example_deps="avcodec avutil h264_vaapi_encoder"
3489 vaapi_transcode_example_deps="avcodec avformat avutil h264_vaapi_encoder"
3490
3491 # EXTRALIBS_LIST
3492 cpu_init_extralibs="pthreads_extralibs"
3493 cws2fws_extralibs="zlib_extralibs"
3494
3495 # libraries, in any order
3496 avcodec_deps="avutil"
3497 avcodec_suggest="libm"
3498 avcodec_select="null_bsf"
3499 avdevice_deps="avformat avcodec avutil"
3500 avdevice_suggest="libm"
3501 avfilter_deps="avutil"
3502 avfilter_suggest="libm"
3503 avformat_deps="avcodec avutil"
3504 avformat_suggest="libm network zlib"
3505 avresample_deps="avutil"
3506 avresample_suggest="libm"
3507 avutil_suggest="clock_gettime ffnvcodec libm libdrm libmfx opencl user32 vaapi videotoolbox corefoundation corevideo coremedia bcrypt"
3508 postproc_deps="avutil gpl"
3509 postproc_suggest="libm"
3510 swresample_deps="avutil"
3511 swresample_suggest="libm libsoxr"
3512 swscale_deps="avutil"
3513 swscale_suggest="libm"
3514
3515 avcodec_extralibs="pthreads_extralibs iconv_extralibs"
3516 avfilter_extralibs="pthreads_extralibs"
3517 avutil_extralibs="d3d11va_extralibs nanosleep_extralibs pthreads_extralibs vaapi_drm_extralibs vaapi_x11_extralibs vdpau_x11_extralibs"
3518
3519 # programs
3520 ffmpeg_deps="avcodec avfilter avformat"
3521 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3522                null_filter
3523                trim_filter"
3524 ffmpeg_suggest="ole32 psapi shell32"
3525 ffplay_deps="avcodec avformat swscale swresample sdl2"
3526 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3527 ffplay_suggest="shell32"
3528 ffprobe_deps="avcodec avformat"
3529 ffprobe_suggest="shell32"
3530
3531 # documentation
3532 podpages_deps="perl"
3533 manpages_deps="perl pod2man"
3534 htmlpages_deps="perl"
3535 htmlpages_deps_any="makeinfo_html texi2html"
3536 txtpages_deps="perl makeinfo"
3537 doc_deps_any="manpages htmlpages podpages txtpages"
3538
3539 # default parameters
3540
3541 logfile="ffbuild/config.log"
3542
3543 # installation paths
3544 prefix_default="/usr/local"
3545 bindir_default='${prefix}/bin'
3546 datadir_default='${prefix}/share/ffmpeg'
3547 docdir_default='${prefix}/share/doc/ffmpeg'
3548 incdir_default='${prefix}/include'
3549 libdir_default='${prefix}/lib'
3550 mandir_default='${prefix}/share/man'
3551
3552 # toolchain
3553 ar_default="ar"
3554 cc_default="gcc"
3555 cxx_default="g++"
3556 host_cc_default="gcc"
3557 doxygen_default="doxygen"
3558 install="install"
3559 ln_s_default="ln -s -f"
3560 nm_default="nm -g"
3561 pkg_config_default=pkg-config
3562 ranlib_default="ranlib"
3563 strip_default="strip"
3564 version_script='--version-script'
3565 objformat="elf32"
3566 x86asmexe_default="nasm"
3567 windres_default="windres"
3568 nvcc_default="nvcc"
3569 nvccflags_default="-gencode arch=compute_30,code=sm_30 -O2"
3570 striptype="direct"
3571
3572 # OS
3573 target_os_default=$(tolower $(uname -s))
3574 host_os=$target_os_default
3575
3576 # machine
3577 if test "$target_os_default" = aix; then
3578     arch_default=$(uname -p)
3579     strip_default="strip -X32_64"
3580 else
3581     arch_default=$(uname -m)
3582 fi
3583 cpu="generic"
3584 intrinsics="none"
3585
3586 # configurable options
3587 enable $PROGRAM_LIST
3588 enable $DOCUMENT_LIST
3589 enable $EXAMPLE_LIST
3590 enable $(filter_out avresample $LIBRARY_LIST)
3591 enable stripping
3592
3593 enable asm
3594 enable debug
3595 enable doc
3596 enable faan faandct faanidct
3597 enable optimizations
3598 enable runtime_cpudetect
3599 enable safe_bitstream_reader
3600 enable static
3601 enable swscale_alpha
3602 enable valgrind_backtrace
3603
3604 sws_max_filter_size_default=256
3605 set_default sws_max_filter_size
3606
3607 # internal components are enabled by default
3608 enable $EXTRALIBS_LIST
3609
3610 # Avoid external, non-system, libraries getting enabled by dependency resolution
3611 disable $EXTERNAL_LIBRARY_LIST $HWACCEL_LIBRARY_LIST
3612
3613 # build settings
3614 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3615 LIBPREF="lib"
3616 LIBSUF=".a"
3617 FULLNAME='$(NAME)$(BUILDSUF)'
3618 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3619 SLIBPREF="lib"
3620 SLIBSUF=".so"
3621 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3622 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3623 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3624 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3625 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3626 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3627 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
3628
3629 asflags_filter=echo
3630 cflags_filter=echo
3631 ldflags_filter=echo
3632
3633 AS_C='-c'
3634 AS_O='-o $@'
3635 CC_C='-c'
3636 CC_E='-E -o $@'
3637 CC_O='-o $@'
3638 CXX_C='-c'
3639 CXX_O='-o $@'
3640 OBJCC_C='-c'
3641 OBJCC_E='-E -o $@'
3642 OBJCC_O='-o $@'
3643 X86ASM_O='-o $@'
3644 LD_O='-o $@'
3645 LD_LIB='-l%'
3646 LD_PATH='-L'
3647 HOSTCC_C='-c'
3648 HOSTCC_E='-E -o $@'
3649 HOSTCC_O='-o $@'
3650 HOSTLD_O='-o $@'
3651 NVCC_C='-c'
3652 NVCC_O='-o $@'
3653
3654 host_extralibs='-lm'
3655 host_cflags_filter=echo
3656 host_ldflags_filter=echo
3657
3658 target_path='$(CURDIR)'
3659
3660 # since the object filename is not given with the -MM flag, the compiler
3661 # is only able to print the basename, and we must add the path ourselves
3662 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3663 DEPFLAGS='-MM'
3664
3665 mkdir -p ffbuild
3666
3667 # find source path
3668 if test -f configure; then
3669     source_path=.
3670 else
3671     source_path=$(cd $(dirname "$0"); pwd)
3672     case "$source_path" in
3673         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3674     esac
3675     test -e "$source_path/config.h" &&
3676         die "Out of tree builds are impossible with config.h in source dir."
3677 fi
3678
3679 for v in "$@"; do
3680     r=${v#*=}
3681     l=${v%"$r"}
3682     r=$(sh_quote "$r")
3683     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3684 done
3685
3686 find_things_extern(){
3687     thing=$1
3688     pattern=$2
3689     file=$source_path/$3
3690     out=${4:-$thing}
3691     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$out/p" "$file"
3692 }
3693
3694 find_filters_extern(){
3695     file=$source_path/$1
3696     #sed -n "s/^extern AVFilter ff_\([avfsinkrc]\{2,5\}\)_\(\w\+\);/\2_filter/p" $file
3697     sed -E -n "s/^extern AVFilter ff_([avfsinkrc]{2,5})_([a-zA-Z0-9_]+);/\2_filter/p" $file
3698 }
3699
3700 FILTER_LIST=$(find_filters_extern libavfilter/allfilters.c)
3701 OUTDEV_LIST=$(find_things_extern muxer AVOutputFormat libavdevice/alldevices.c outdev)
3702 INDEV_LIST=$(find_things_extern demuxer AVInputFormat libavdevice/alldevices.c indev)
3703 MUXER_LIST=$(find_things_extern muxer AVOutputFormat libavformat/allformats.c)
3704 DEMUXER_LIST=$(find_things_extern demuxer AVInputFormat libavformat/allformats.c)
3705 ENCODER_LIST=$(find_things_extern encoder AVCodec libavcodec/allcodecs.c)
3706 DECODER_LIST=$(find_things_extern decoder AVCodec libavcodec/allcodecs.c)
3707 CODEC_LIST="
3708     $ENCODER_LIST
3709     $DECODER_LIST
3710 "
3711 PARSER_LIST=$(find_things_extern parser AVCodecParser libavcodec/parsers.c)
3712 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3713 HWACCEL_LIST=$(find_things_extern hwaccel AVHWAccel libavcodec/hwaccels.h)
3714 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3715
3716 AVCODEC_COMPONENTS_LIST="
3717     $BSF_LIST
3718     $DECODER_LIST
3719     $ENCODER_LIST
3720     $HWACCEL_LIST
3721     $PARSER_LIST
3722 "
3723
3724 AVDEVICE_COMPONENTS_LIST="
3725     $INDEV_LIST
3726     $OUTDEV_LIST
3727 "
3728
3729 AVFILTER_COMPONENTS_LIST="
3730     $FILTER_LIST
3731 "
3732
3733 AVFORMAT_COMPONENTS_LIST="
3734     $DEMUXER_LIST
3735     $MUXER_LIST
3736     $PROTOCOL_LIST
3737 "
3738
3739 ALL_COMPONENTS="
3740     $AVCODEC_COMPONENTS_LIST
3741     $AVDEVICE_COMPONENTS_LIST
3742     $AVFILTER_COMPONENTS_LIST
3743     $AVFORMAT_COMPONENTS_LIST
3744 "
3745
3746 for n in $COMPONENT_LIST; do
3747     v=$(toupper ${n%s})_LIST
3748     eval enable \$$v
3749     eval ${n}_if_any="\$$v"
3750 done
3751
3752 enable $ARCH_EXT_LIST
3753
3754 die_unknown(){
3755     echo "Unknown option \"$1\"."
3756     echo "See $0 --help for available options."
3757     exit 1
3758 }
3759
3760 print_in_columns() {
3761     cols=$(expr $ncols / 24)
3762     cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
3763 }
3764
3765 show_list() {
3766     suffix=_$1
3767     shift
3768     echo $* | sed s/$suffix//g | print_in_columns
3769     exit 0
3770 }
3771
3772 rand_list(){
3773     IFS=', '
3774     set -- $*
3775     unset IFS
3776     for thing; do
3777         comp=${thing%:*}
3778         prob=${thing#$comp}
3779         prob=${prob#:}
3780         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3781         echo "prob ${prob:-0.5}"
3782         printf '%s\n' $comp
3783     done
3784 }
3785
3786 do_random(){
3787     action=$1
3788     shift
3789     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3790     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3791 }
3792
3793 for opt do
3794     optval="${opt#*=}"
3795     case "$opt" in
3796         --extra-ldflags=*)
3797             add_ldflags $optval
3798         ;;
3799         --extra-ldexeflags=*)
3800             add_ldexeflags $optval
3801         ;;
3802         --extra-ldsoflags=*)
3803             add_ldsoflags $optval
3804         ;;
3805         --extra-ldlibflags=*)
3806             warn "The --extra-ldlibflags option is only provided for compatibility and will be\n"\
3807                  "removed in the future. Use --extra-ldsoflags instead."
3808             add_ldsoflags $optval
3809         ;;
3810         --extra-libs=*)
3811             add_extralibs $optval
3812         ;;
3813         --disable-devices)
3814             disable $INDEV_LIST $OUTDEV_LIST
3815         ;;
3816         --enable-debug=*)
3817             debuglevel="$optval"
3818         ;;
3819         --disable-programs)
3820             disable $PROGRAM_LIST
3821         ;;
3822         --disable-everything)
3823             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3824         ;;
3825         --disable-all)
3826             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3827             disable $LIBRARY_LIST $PROGRAM_LIST doc
3828             enable avutil
3829         ;;
3830         --enable-random|--disable-random)
3831             action=${opt%%-random}
3832             do_random ${action#--} $COMPONENT_LIST
3833         ;;
3834         --enable-random=*|--disable-random=*)
3835             action=${opt%%-random=*}
3836             do_random ${action#--} $optval
3837         ;;
3838         --enable-sdl)
3839             enable sdl2
3840         ;;
3841         --enable-*=*|--disable-*=*)
3842             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3843             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3844             eval list=\$$(toupper $thing)_LIST
3845             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3846             list=$(filter "$name" $list)
3847             [ "$list" = "" ] && warn "Option $opt did not match anything"
3848             $action $list
3849         ;;
3850         --enable-yasm|--disable-yasm)
3851             warn "The ${opt} option is only provided for compatibility and will be\n"\
3852                  "removed in the future. Use --enable-x86asm / --disable-x86asm instead."
3853             test $opt = --enable-yasm && x86asm=yes || x86asm=no
3854         ;;
3855         --yasmexe=*)
3856             warn "The --yasmexe option is only provided for compatibility and will be\n"\
3857                  "removed in the future. Use --x86asmexe instead."
3858             x86asmexe="$optval"
3859         ;;
3860         --enable-?*|--disable-?*)
3861             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3862             if is_in $option $COMPONENT_LIST; then
3863                 test $action = disable && action=unset
3864                 eval $action \$$(toupper ${option%s})_LIST
3865             elif is_in $option $CMDLINE_SELECT; then
3866                 $action $option
3867             else
3868                 die_unknown $opt
3869             fi
3870         ;;
3871         --list-*)
3872             NAME="${opt#--list-}"
3873             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3874             NAME=${NAME%s}
3875             eval show_list $NAME \$$(toupper $NAME)_LIST
3876         ;;
3877         --help|-h) show_help
3878         ;;
3879         --quiet|-q) quiet=yes
3880         ;;
3881         --fatal-warnings) enable fatal_warnings
3882         ;;
3883         --libfuzzer=*)
3884             libfuzzer_path="$optval"
3885         ;;
3886         *)
3887             optname="${opt%%=*}"
3888             optname="${optname#--}"
3889             optname=$(echo "$optname" | sed 's/-/_/g')
3890             if is_in $optname $CMDLINE_SET; then
3891                 eval $optname='$optval'
3892             elif is_in $optname $CMDLINE_APPEND; then
3893                 append $optname "$optval"
3894             else
3895                 die_unknown $opt
3896             fi
3897         ;;
3898     esac
3899 done
3900
3901 for e in $env; do
3902     eval "export $e"
3903 done
3904
3905 if disabled autodetect; then
3906
3907     # Unless iconv is explicitely disabled by the user, we still want to probe
3908     # for the iconv from the libc.
3909     disabled iconv || enable libc_iconv
3910
3911     disable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3912     disable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3913 fi
3914 # Mark specifically enabled, but normally autodetected libraries as requested.
3915 for lib in $AUTODETECT_LIBS; do
3916     enabled $lib && request $lib
3917 done
3918 #TODO: switch to $AUTODETECT_LIBS when $THREADS_LIST is supported the same way
3919 enable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3920 enable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3921
3922 disabled logging && logfile=/dev/null
3923
3924 # command line configuration sanity checks
3925
3926 # we need to build at least one lib type
3927 if ! enabled_any static shared; then
3928     cat <<EOF
3929 At least one library type must be built.
3930 Specify --enable-static to build the static libraries or --enable-shared to
3931 build the shared libraries as well. To only build the shared libraries specify
3932 --disable-static in addition to --enable-shared.
3933 EOF
3934     exit 1
3935 fi
3936
3937 die_license_disabled() {
3938     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
3939 }
3940
3941 die_license_disabled_gpl() {
3942     enabled $1 || { enabled $v && die "$v is incompatible with the gpl and --enable-$1 is not specified."; }
3943 }
3944
3945 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3946 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3947
3948 enabled gpl && map "die_license_disabled_gpl nonfree" $EXTERNAL_LIBRARY_NONFREE_LIST
3949 map "die_license_disabled nonfree" $HWACCEL_LIBRARY_NONFREE_LIST
3950
3951 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3952
3953 if enabled nonfree; then
3954     license="nonfree and unredistributable"
3955 elif enabled gplv3; then
3956     license="GPL version 3 or later"
3957 elif enabled lgplv3; then
3958     license="LGPL version 3 or later"
3959 elif enabled gpl; then
3960     license="GPL version 2 or later"
3961 else
3962     license="LGPL version 2.1 or later"
3963 fi
3964
3965 enabled_all gnutls openssl &&
3966     die "GnuTLS and OpenSSL must not be enabled at the same time."
3967
3968 enabled_all gnutls mbedtls &&
3969     die "GnuTLS and mbedTLS must not be enabled at the same time."
3970
3971 enabled_all openssl mbedtls &&
3972     die "OpenSSL and mbedTLS must not be enabled at the same time."
3973
3974 # Disable all the library-specific components if the library itself
3975 # is disabled, see AVCODEC_LIST and following _LIST variables.
3976
3977 disable_components(){
3978     disabled ${1} && disable $(
3979         eval components="\$$(toupper ${1})_COMPONENTS"
3980         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
3981     )
3982 }
3983
3984 map 'disable_components $v' $LIBRARY_LIST
3985
3986 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
3987 set >> $logfile
3988
3989 test -n "$valgrind" && toolchain="valgrind-memcheck"
3990
3991 enabled ossfuzz && ! echo $CFLAGS | grep -q -- "-fsanitize="  && ! echo $CFLAGS | grep -q -- "-fcoverage-mapping" &&{
3992     add_cflags  -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp -fno-omit-frame-pointer
3993     add_ldflags -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp
3994 }
3995
3996 case "$toolchain" in
3997     *-asan)
3998         cc_default="${toolchain%-asan}"
3999         add_cflags  -fsanitize=address
4000         add_ldflags -fsanitize=address
4001     ;;
4002     *-msan)
4003         cc_default="${toolchain%-msan}"
4004         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
4005         add_ldflags -fsanitize=memory
4006     ;;
4007     *-tsan)
4008         cc_default="${toolchain%-tsan}"
4009         add_cflags  -fsanitize=thread
4010         add_ldflags -fsanitize=thread
4011         case "$toolchain" in
4012             gcc-tsan)
4013                 add_cflags  -fPIC
4014                 add_ldflags -fPIC
4015                 ;;
4016         esac
4017     ;;
4018     *-usan)
4019         cc_default="${toolchain%-usan}"
4020         add_cflags  -fsanitize=undefined
4021         add_ldflags -fsanitize=undefined
4022     ;;
4023     valgrind-*)
4024         target_exec_default="valgrind"
4025         case "$toolchain" in
4026             valgrind-massif)
4027                 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"
4028                 ;;
4029             valgrind-memcheck)
4030                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
4031                 ;;
4032         esac
4033     ;;
4034     msvc)
4035         # Check whether the current MSVC version needs the C99 converter.
4036         # From MSVC 2013 (compiler major version 18) onwards, it does actually
4037         # support enough of C99 to build ffmpeg. Default to the new
4038         # behaviour if the regexp was unable to match anything, since this
4039         # successfully parses the version number of existing supported
4040         # versions that require the converter (MSVC 2010 and 2012).
4041         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
4042         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
4043             cc_default="cl"
4044             cxx_default="cl"
4045         else
4046             die "Unsupported MSVC version (2013 or newer required)"
4047         fi
4048         ld_default="$source_path/compat/windows/mslink"
4049         nm_default="dumpbin -symbols"
4050         ar_default="lib"
4051         case "$arch" in
4052         aarch64|arm64)
4053             as_default="armasm64"
4054             ;;
4055         arm*)
4056             as_default="armasm"
4057             ;;
4058         esac
4059         target_os_default="win32"
4060         # Use a relative path for TMPDIR. This makes sure all the
4061         # ffconf temp files are written with a relative path, avoiding
4062         # issues with msys/win32 path conversion for MSVC parameters
4063         # such as -Fo<file> or -out:<file>.
4064         TMPDIR=.
4065     ;;
4066     icl)
4067         cc_default="icl"
4068         ld_default="xilink"
4069         nm_default="dumpbin -symbols"
4070         ar_default="xilib"
4071         target_os_default="win32"
4072         TMPDIR=.
4073     ;;
4074     gcov)
4075         add_cflags  -fprofile-arcs -ftest-coverage
4076         add_ldflags -fprofile-arcs -ftest-coverage
4077     ;;
4078     llvm-cov)
4079         add_cflags -fprofile-arcs -ftest-coverage
4080         add_ldflags --coverage
4081     ;;
4082     hardened)
4083         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
4084         add_cflags   -fno-strict-overflow -fstack-protector-all
4085         add_ldflags  -Wl,-z,relro -Wl,-z,now
4086         add_cflags   -fPIE
4087         add_ldexeflags -fPIE -pie
4088     ;;
4089     ?*)
4090         die "Unknown toolchain $toolchain"
4091     ;;
4092 esac
4093
4094 if test -n "$cross_prefix"; then
4095     test -n "$arch" && test -n "$target_os" ||
4096         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
4097     enable cross_compile
4098 fi
4099
4100 ar_default="${cross_prefix}${ar_default}"
4101 cc_default="${cross_prefix}${cc_default}"
4102 cxx_default="${cross_prefix}${cxx_default}"
4103 nm_default="${cross_prefix}${nm_default}"
4104 pkg_config_default="${cross_prefix}${pkg_config_default}"
4105 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
4106     ranlib_default="${cross_prefix}${ranlib_default} -D"
4107 else
4108     ranlib_default="${cross_prefix}${ranlib_default}"
4109 fi
4110 strip_default="${cross_prefix}${strip_default}"
4111 windres_default="${cross_prefix}${windres_default}"
4112
4113 sysinclude_default="${sysroot}/usr/include"
4114
4115 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
4116     target_exec target_os x86asmexe nvcc
4117 enabled cross_compile || host_cc_default=$cc
4118 set_default host_cc
4119
4120 pkg_config_fail_message=""
4121 if ! $pkg_config --version >/dev/null 2>&1; then
4122     warn "$pkg_config not found, library detection may fail."
4123     pkg_config=false
4124 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
4125     pkg_config_fail_message="
4126 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
4127 fi
4128
4129 if test $doxygen != $doxygen_default && \
4130   ! $doxygen --version >/dev/null 2>&1; then
4131     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
4132 fi
4133
4134 exesuf() {
4135     case $1 in
4136         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
4137     esac
4138 }
4139
4140 EXESUF=$(exesuf $target_os)
4141 HOSTEXESUF=$(exesuf $host_os)
4142
4143 # set temporary file name
4144 : ${TMPDIR:=$TEMPDIR}
4145 : ${TMPDIR:=$TMP}
4146 : ${TMPDIR:=/tmp}
4147
4148 if [ -n "$tempprefix" ] ; then
4149     mktemp(){
4150         tmpname="$tempprefix.${HOSTNAME}.${UID}"
4151         echo "$tmpname"
4152         mkdir "$tmpname"
4153     }
4154 elif ! test_cmd mktemp -u XXXXXX; then
4155     # simple replacement for missing mktemp
4156     # NOT SAFE FOR GENERAL USE
4157     mktemp(){
4158         tmpname="${2%%XXX*}.${HOSTNAME}.${UID}.$$"
4159         echo "$tmpname"
4160         mkdir "$tmpname"
4161     }
4162 fi
4163
4164 FFTMPDIR=$(mktemp -d "${TMPDIR}/ffconf.XXXXXXXX" 2> /dev/null) ||
4165     die "Unable to create temporary directory in $TMPDIR."
4166
4167 tmpfile(){
4168     tmp="${FFTMPDIR}/test"$2
4169     (set -C; exec > $tmp) 2> /dev/null ||
4170         die "Unable to create temporary file in $FFTMPDIR."
4171     eval $1=$tmp
4172 }
4173
4174 trap 'rm -rf -- "$FFTMPDIR"' EXIT
4175 trap 'exit 2' INT
4176
4177 tmpfile TMPASM .asm
4178 tmpfile TMPC   .c
4179 tmpfile TMPCPP .cpp
4180 tmpfile TMPE   $EXESUF
4181 tmpfile TMPH   .h
4182 tmpfile TMPM   .m
4183 tmpfile TMPO   .o
4184 tmpfile TMPS   .S
4185 tmpfile TMPSH  .sh
4186 tmpfile TMPV   .ver
4187
4188 unset -f mktemp
4189
4190 chmod +x $TMPE
4191
4192 # make sure we can execute files in $TMPDIR
4193 cat > $TMPSH 2>> $logfile <<EOF
4194 #! /bin/sh
4195 EOF
4196 chmod +x $TMPSH >> $logfile 2>&1
4197 if ! $TMPSH >> $logfile 2>&1; then
4198     cat <<EOF
4199 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
4200 variable to another directory and make sure that it is not mounted noexec.
4201 EOF
4202     die "Sanity test failed."
4203 fi
4204
4205 armasm_flags(){
4206     for flag; do
4207         case $flag in
4208             # Filter out MSVC cl.exe options from cflags that shouldn't
4209             # be passed to gas-preprocessor
4210             -M[TD]*)                                            ;;
4211             *)                  echo $flag                      ;;
4212         esac
4213    done
4214 }
4215
4216 cparser_flags(){
4217     for flag; do
4218         case $flag in
4219             -Wno-switch)             echo -Wno-switch-enum ;;
4220             -Wno-format-zero-length) ;;
4221             -Wdisabled-optimization) ;;
4222             -Wno-pointer-sign)       echo -Wno-other ;;
4223             *)                       echo $flag ;;
4224         esac
4225     done
4226 }
4227
4228 msvc_common_flags(){
4229     for flag; do
4230         case $flag in
4231             # In addition to specifying certain flags under the compiler
4232             # specific filters, they must be specified here as well or else the
4233             # generic catch all at the bottom will print the original flag.
4234             -Wall)                ;;
4235             -Wextra)              ;;
4236             -std=c99)             ;;
4237             # Common flags
4238             -fomit-frame-pointer) ;;
4239             -g)                   echo -Z7 ;;
4240             -fno-math-errno)      ;;
4241             -fno-common)          ;;
4242             -fno-signed-zeros)    ;;
4243             -fPIC)                ;;
4244             -mthumb)              ;;
4245             -march=*)             ;;
4246             -lz)                  echo zlib.lib ;;
4247             -lx264)               echo libx264.lib ;;
4248             -lstdc++)             ;;
4249             -l*)                  echo ${flag#-l}.lib ;;
4250             -LARGEADDRESSAWARE)   echo $flag ;;
4251             -L*)                  echo -libpath:${flag#-L} ;;
4252             *)                    echo $flag ;;
4253         esac
4254     done
4255 }
4256
4257 msvc_flags(){
4258     msvc_common_flags "$@"
4259     for flag; do
4260         case $flag in
4261             -Wall)                echo -W3 -wd4018 -wd4146 -wd4244 -wd4305     \
4262                                        -wd4554 ;;
4263             -Wextra)              echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
4264                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
4265                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
4266                                        -wd4307 \
4267                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
4268         esac
4269     done
4270 }
4271
4272 icl_flags(){
4273     msvc_common_flags "$@"
4274     for flag; do
4275         case $flag in
4276             # Despite what Intel's documentation says -Wall, which is supported
4277             # on Windows, does enable remarks so disable them here.
4278             -Wall)                echo $flag -Qdiag-disable:remark ;;
4279             -std=c99)             echo -Qstd=c99 ;;
4280             -flto)                echo -ipo ;;
4281         esac
4282     done
4283 }
4284
4285 icc_flags(){
4286     for flag; do
4287         case $flag in
4288             -flto)                echo -ipo ;;
4289             *)                    echo $flag ;;
4290         esac
4291     done
4292 }
4293
4294 suncc_flags(){
4295     for flag; do
4296         case $flag in
4297             -march=*|-mcpu=*)
4298                 case "${flag#*=}" in
4299                     native)                   echo -xtarget=native       ;;
4300                     v9|niagara)               echo -xarch=sparc          ;;
4301                     ultrasparc)               echo -xarch=sparcvis       ;;
4302                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
4303                     i586|pentium)             echo -xchip=pentium        ;;
4304                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
4305                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
4306                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
4307                     pentium4*)          echo -xtarget=pentium4           ;;
4308                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
4309                     *-sse3)             echo -xarch=sse3                 ;;
4310                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
4311                     bonnell)                   echo -xarch=ssse3         ;;
4312                     corei7|nehalem)            echo -xtarget=nehalem     ;;
4313                     westmere)                  echo -xtarget=westmere    ;;
4314                     silvermont)                echo -xarch=sse4_2        ;;
4315                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
4316                     core-avx*|ivybridge|haswell|broadwell|skylake*|knl)
4317                                                echo -xarch=avx           ;;
4318                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
4319                     btver1)                    echo -xarch=amdsse4a      ;;
4320                     btver2|bdver*|znver*)      echo -xarch=avx           ;;
4321                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
4322                     k8|opteron|athlon64|athlon-fx)
4323                                                echo -xarch=sse2a         ;;
4324                     athlon*)                   echo -xarch=pentium_proa  ;;
4325                 esac
4326                 ;;
4327             -std=c99)             echo -xc99              ;;
4328             -fomit-frame-pointer) echo -xregs=frameptr    ;;
4329             -fPIC)                echo -KPIC -xcode=pic32 ;;
4330             -W*,*)                echo $flag              ;;
4331             -f*-*|-W*|-mimpure-text)                      ;;
4332             -shared)              echo -G                 ;;
4333             *)                    echo $flag              ;;
4334         esac
4335     done
4336 }
4337
4338 probe_cc(){
4339     pfx=$1
4340     _cc=$2
4341     first=$3
4342
4343     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
4344     unset _ld_o _ldflags _ld_lib _ld_path
4345     unset _depflags _DEPCMD _DEPFLAGS
4346     _flags_filter=echo
4347
4348     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
4349         true # no-op to avoid reading stdin in following checks
4350     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
4351         _type=llvm_gcc
4352         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
4353         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
4354         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4355         _cflags_speed='-O3'
4356         _cflags_size='-Os'
4357     elif $_cc -v 2>&1 | grep -qi ^gcc; then
4358         _type=gcc
4359         gcc_version=$($_cc --version | head -n1)
4360         gcc_basever=$($_cc -dumpversion)
4361         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
4362         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
4363         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
4364         case $gcc_basever in
4365             2) ;;
4366             2.*) ;;
4367             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
4368         esac
4369         if [ "$first" = true ]; then
4370             case $gcc_basever in
4371                 4.2*)
4372                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
4373             esac
4374         fi
4375         _cflags_speed='-O3'
4376         _cflags_size='-Os'
4377     elif $_cc --version 2>/dev/null | grep -q ^icc; then
4378         _type=icc
4379         _ident=$($_cc --version | head -n1)
4380         _depflags='-MMD'
4381         _cflags_speed='-O3'
4382         _cflags_size='-Os'
4383         _cflags_noopt='-O1'
4384         _flags_filter=icc_flags
4385     elif $_cc -v 2>&1 | grep -q xlc; then
4386         _type=xlc
4387         _ident=$($_cc -qversion 2>/dev/null | head -n1)
4388         _cflags_speed='-O5'
4389         _cflags_size='-O5 -qcompact'
4390     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
4391         test -d "$sysroot" || die "No valid sysroot specified."
4392         _type=armcc
4393         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
4394         armcc_conf="$PWD/armcc.conf"
4395         $_cc --arm_linux_configure                 \
4396              --arm_linux_config_file="$armcc_conf" \
4397              --configure_sysroot="$sysroot"        \
4398              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
4399              die "Error creating armcc configuration file."
4400         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
4401         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
4402         as_default="${cross_prefix}gcc"
4403         _depflags='-MMD'
4404         _cflags_speed='-O3'
4405         _cflags_size='-Os'
4406     elif $_cc -v 2>&1 | grep -q clang && ! $_cc -? > /dev/null 2>&1; then
4407         _type=clang
4408         _ident=$($_cc --version 2>/dev/null | head -n1)
4409         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4410         _cflags_speed='-O3'
4411         _cflags_size='-Oz'
4412     elif $_cc -V 2>&1 | grep -q Sun; then
4413         _type=suncc
4414         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
4415         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
4416         _DEPFLAGS='-xM1 -xc99'
4417         _ldflags='-std=c99'
4418         _cflags_speed='-O5'
4419         _cflags_size='-O5 -xspace'
4420         _flags_filter=suncc_flags
4421     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
4422         _type=pathscale
4423         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4424         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4425         _cflags_speed='-O2'
4426         _cflags_size='-Os'
4427         _flags_filter='filter_out -Wdisabled-optimization'
4428     elif $_cc -v 2>&1 | grep -q Open64; then
4429         _type=open64
4430         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4431         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4432         _cflags_speed='-O2'
4433         _cflags_size='-Os'
4434         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
4435     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
4436         _type=armasm
4437         _ident=$($_cc | head -n1)
4438         # 4509: "This form of conditional instruction is deprecated"
4439         _flags="-nologo -ignore 4509"
4440         _flags_filter=armasm_flags
4441     elif $_cc 2>&1 | grep -q Intel; then
4442         _type=icl
4443         _ident=$($_cc 2>&1 | head -n1)
4444         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
4445         # Not only is O3 broken on 13.x+ but it is slower on all previous
4446         # versions (tested) as well.
4447         _cflags_speed="-O2"
4448         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
4449         if $_cc 2>&1 | grep -q Linker; then
4450             _ld_o='-out:$@'
4451         else
4452             _ld_o='-Fe$@'
4453         fi
4454         _cc_o='-Fo$@'
4455         _cc_e='-P'
4456         _flags_filter=icl_flags
4457         _ld_lib='lib%.a'
4458         _ld_path='-libpath:'
4459         # -Qdiag-error to make icl error when seeing certain unknown arguments
4460         _flags='-nologo -Qdiag-error:4044,10157'
4461         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
4462         # with MSVC which enables it by default.
4463         _cflags='-Qms0 -Qvec- -Qsimd- -GS -fp:precise'
4464         disable stripping
4465     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
4466         # lld can emulate multiple different linkers; in ms link.exe mode,
4467         # the -? parameter gives the help output which contains an identifyable
4468         # string, while it gives an error in other modes.
4469         _type=lld-link
4470         # The link.exe mode doesn't have a switch for getting the version,
4471         # but we can force it back to gnu mode and get the version from there.
4472         _ident=$($_cc -flavor gnu --version 2>/dev/null)
4473         _ld_o='-out:$@'
4474         _flags_filter=msvc_flags
4475         _ld_lib='lib%.a'
4476         _ld_path='-libpath:'
4477     elif $_cc -nologo- 2>&1 | grep -q Microsoft || { $_cc -v 2>&1 | grep -q clang && $_cc -? > /dev/null 2>&1; }; then
4478         _type=msvc