avformat/mxfdec: Correct confusing struct tag
[ffmpeg.git] / configure
1 #!/bin/sh
2 #
3 # FFmpeg configure script
4 #
5 # Copyright (c) 2000-2002 Fabrice Bellard
6 # Copyright (c) 2005-2008 Diego Biurrun
7 # Copyright (c) 2005-2008 Mans Rullgard
8 #
9
10 # Prevent locale nonsense from breaking basic text processing.
11 LC_ALL=C
12 export LC_ALL
13
14 # make sure we are running under a compatible shell
15 # try to make this part work with most shells
16
17 try_exec(){
18     echo "Trying shell $1"
19     type "$1" > /dev/null 2>&1 && exec "$@"
20 }
21
22 unset foo
23 (: ${foo%%bar}) 2> /dev/null
24 E1="$?"
25
26 (: ${foo?}) 2> /dev/null
27 E2="$?"
28
29 if test "$E1" != 0 || test "$E2" = 0; then
30     echo "Broken shell detected.  Trying alternatives."
31     export FF_CONF_EXEC
32     if test "0$FF_CONF_EXEC" -lt 1; then
33         FF_CONF_EXEC=1
34         try_exec bash "$0" "$@"
35     fi
36     if test "0$FF_CONF_EXEC" -lt 2; then
37         FF_CONF_EXEC=2
38         try_exec ksh "$0" "$@"
39     fi
40     if test "0$FF_CONF_EXEC" -lt 3; then
41         FF_CONF_EXEC=3
42         try_exec /usr/xpg4/bin/sh "$0" "$@"
43     fi
44     echo "No compatible shell script interpreter found."
45     echo "This configure script requires a POSIX-compatible shell"
46     echo "such as bash or ksh."
47     echo "THIS IS NOT A BUG IN FFMPEG, DO NOT REPORT IT AS SUCH."
48     echo "Instead, install a working POSIX-compatible shell."
49     echo "Disabling this configure test will create a broken FFmpeg."
50     if test "$BASH_VERSION" = '2.04.0(1)-release'; then
51         echo "This bash version ($BASH_VERSION) is broken on your platform."
52         echo "Upgrade to a later version if available."
53     fi
54     exit 1
55 fi
56
57 test -d /usr/xpg4/bin && PATH=/usr/xpg4/bin:$PATH
58
59 show_help(){
60     cat <<EOF
61 Usage: configure [options]
62 Options: [defaults in brackets after descriptions]
63
64 Help options:
65   --help                   print this message
66   --quiet                  Suppress showing informative output
67   --list-decoders          show all available decoders
68   --list-encoders          show all available encoders
69   --list-hwaccels          show all available hardware accelerators
70   --list-demuxers          show all available demuxers
71   --list-muxers            show all available muxers
72   --list-parsers           show all available parsers
73   --list-protocols         show all available protocols
74   --list-bsfs              show all available bitstream filters
75   --list-indevs            show all available input devices
76   --list-outdevs           show all available output devices
77   --list-filters           show all available filters
78
79 Standard options:
80   --logfile=FILE           log tests and output to FILE [ffbuild/config.log]
81   --disable-logging        do not log configure debug information
82   --fatal-warnings         fail if any configure warning is generated
83   --prefix=PREFIX          install in PREFIX [$prefix_default]
84   --bindir=DIR             install binaries in DIR [PREFIX/bin]
85   --datadir=DIR            install data files in DIR [PREFIX/share/ffmpeg]
86   --docdir=DIR             install documentation in DIR [PREFIX/share/doc/ffmpeg]
87   --libdir=DIR             install libs in DIR [PREFIX/lib]
88   --shlibdir=DIR           install shared libs in DIR [LIBDIR]
89   --incdir=DIR             install includes in DIR [PREFIX/include]
90   --mandir=DIR             install man page in DIR [PREFIX/share/man]
91   --pkgconfigdir=DIR       install pkg-config files in DIR [LIBDIR/pkgconfig]
92   --enable-rpath           use rpath to allow installing libraries in paths
93                            not part of the dynamic linker search path
94                            use rpath when linking programs (USE WITH CARE)
95   --install-name-dir=DIR   Darwin directory name for installed targets
96
97 Licensing options:
98   --enable-gpl             allow use of GPL code, the resulting libs
99                            and binaries will be under GPL [no]
100   --enable-version3        upgrade (L)GPL to version 3 [no]
101   --enable-nonfree         allow use of nonfree code, the resulting libs
102                            and binaries will be unredistributable [no]
103
104 Configuration options:
105   --disable-static         do not build static libraries [no]
106   --enable-shared          build shared libraries [no]
107   --enable-small           optimize for size instead of speed
108   --disable-runtime-cpudetect disable detecting CPU capabilities at runtime (smaller binary)
109   --enable-gray            enable full grayscale support (slower color)
110   --disable-swscale-alpha  disable alpha channel support in swscale
111   --disable-all            disable building components, libraries and programs
112   --disable-autodetect     disable automatically detected external libraries [no]
113
114 Program options:
115   --disable-programs       do not build command line programs
116   --disable-ffmpeg         disable ffmpeg build
117   --disable-ffplay         disable ffplay build
118   --disable-ffprobe        disable ffprobe build
119
120 Documentation options:
121   --disable-doc            do not build documentation
122   --disable-htmlpages      do not build HTML documentation pages
123   --disable-manpages       do not build man documentation pages
124   --disable-podpages       do not build POD documentation pages
125   --disable-txtpages       do not build text documentation pages
126
127 Component options:
128   --disable-avdevice       disable libavdevice build
129   --disable-avcodec        disable libavcodec build
130   --disable-avformat       disable libavformat build
131   --disable-swresample     disable libswresample build
132   --disable-swscale        disable libswscale build
133   --disable-postproc       disable libpostproc build
134   --disable-avfilter       disable libavfilter build
135   --enable-avresample      enable libavresample build (deprecated) [no]
136   --disable-pthreads       disable pthreads [autodetect]
137   --disable-w32threads     disable Win32 threads [autodetect]
138   --disable-os2threads     disable OS/2 threads [autodetect]
139   --disable-network        disable network support [no]
140   --disable-dct            disable DCT code
141   --disable-dwt            disable DWT code
142   --disable-error-resilience disable error resilience code
143   --disable-lsp            disable LSP code
144   --disable-lzo            disable LZO decoder code
145   --disable-mdct           disable MDCT code
146   --disable-rdft           disable RDFT code
147   --disable-fft            disable FFT code
148   --disable-faan           disable floating point AAN (I)DCT code
149   --disable-pixelutils     disable pixel utils in libavutil
150
151 Individual component options:
152   --disable-everything     disable all components listed below
153   --disable-encoder=NAME   disable encoder NAME
154   --enable-encoder=NAME    enable encoder NAME
155   --disable-encoders       disable all encoders
156   --disable-decoder=NAME   disable decoder NAME
157   --enable-decoder=NAME    enable decoder NAME
158   --disable-decoders       disable all decoders
159   --disable-hwaccel=NAME   disable hwaccel NAME
160   --enable-hwaccel=NAME    enable hwaccel NAME
161   --disable-hwaccels       disable all hwaccels
162   --disable-muxer=NAME     disable muxer NAME
163   --enable-muxer=NAME      enable muxer NAME
164   --disable-muxers         disable all muxers
165   --disable-demuxer=NAME   disable demuxer NAME
166   --enable-demuxer=NAME    enable demuxer NAME
167   --disable-demuxers       disable all demuxers
168   --enable-parser=NAME     enable parser NAME
169   --disable-parser=NAME    disable parser NAME
170   --disable-parsers        disable all parsers
171   --enable-bsf=NAME        enable bitstream filter NAME
172   --disable-bsf=NAME       disable bitstream filter NAME
173   --disable-bsfs           disable all bitstream filters
174   --enable-protocol=NAME   enable protocol NAME
175   --disable-protocol=NAME  disable protocol NAME
176   --disable-protocols      disable all protocols
177   --enable-indev=NAME      enable input device NAME
178   --disable-indev=NAME     disable input device NAME
179   --disable-indevs         disable input devices
180   --enable-outdev=NAME     enable output device NAME
181   --disable-outdev=NAME    disable output device NAME
182   --disable-outdevs        disable output devices
183   --disable-devices        disable all devices
184   --enable-filter=NAME     enable filter NAME
185   --disable-filter=NAME    disable filter NAME
186   --disable-filters        disable all filters
187
188 External library support:
189
190   Using any of the following switches will allow FFmpeg to link to the
191   corresponding external library. All the components depending on that library
192   will become enabled, if all their other dependencies are met and they are not
193   explicitly disabled. E.g. --enable-libwavpack will enable linking to
194   libwavpack and allow the libwavpack encoder to be built, unless it is
195   specifically disabled with --disable-encoder=libwavpack.
196
197   Note that only the system libraries are auto-detected. All the other external
198   libraries must be explicitly enabled.
199
200   Also note that the following help text describes the purpose of the libraries
201   themselves, not all their features will necessarily be usable by FFmpeg.
202
203   --disable-alsa           disable ALSA support [autodetect]
204   --disable-appkit         disable Apple AppKit framework [autodetect]
205   --disable-avfoundation   disable Apple AVFoundation framework [autodetect]
206   --enable-avisynth        enable reading of AviSynth script files [no]
207   --disable-bzlib          disable bzlib [autodetect]
208   --disable-coreimage      disable Apple CoreImage framework [autodetect]
209   --enable-chromaprint     enable audio fingerprinting with chromaprint [no]
210   --enable-frei0r          enable frei0r video filtering [no]
211   --enable-gcrypt          enable gcrypt, needed for rtmp(t)e support
212                            if openssl, librtmp or gmp is not used [no]
213   --enable-gmp             enable gmp, needed for rtmp(t)e support
214                            if openssl or librtmp is not used [no]
215   --enable-gnutls          enable gnutls, needed for https support
216                            if openssl, libtls or mbedtls is not used [no]
217   --disable-iconv          disable iconv [autodetect]
218   --enable-jni             enable JNI support [no]
219   --enable-ladspa          enable LADSPA audio filtering [no]
220   --enable-libaom          enable AV1 video encoding/decoding via libaom [no]
221   --enable-libaribb24      enable ARIB text and caption decoding via libaribb24 [no]
222   --enable-libass          enable libass subtitles rendering,
223                            needed for subtitles and ass filter [no]
224   --enable-libbluray       enable BluRay reading using libbluray [no]
225   --enable-libbs2b         enable bs2b DSP library [no]
226   --enable-libcaca         enable textual display using libcaca [no]
227   --enable-libcelt         enable CELT decoding via libcelt [no]
228   --enable-libcdio         enable audio CD grabbing with libcdio [no]
229   --enable-libcodec2       enable codec2 en/decoding using libcodec2 [no]
230   --enable-libdav1d        enable AV1 decoding via libdav1d [no]
231   --enable-libdavs2        enable AVS2 decoding via libdavs2 [no]
232   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
233                            and libraw1394 [no]
234   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
235   --enable-libflite        enable flite (voice synthesis) support via libflite [no]
236   --enable-libfontconfig   enable libfontconfig, useful for drawtext filter [no]
237   --enable-libfreetype     enable libfreetype, needed for drawtext filter [no]
238   --enable-libfribidi      enable libfribidi, improves drawtext filter [no]
239   --enable-libgme          enable Game Music Emu via libgme [no]
240   --enable-libgsm          enable GSM de/encoding via libgsm [no]
241   --enable-libiec61883     enable iec61883 via libiec61883 [no]
242   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
243   --enable-libjack         enable JACK audio sound server [no]
244   --enable-libklvanc       enable Kernel Labs VANC processing [no]
245   --enable-libkvazaar      enable HEVC encoding via libkvazaar [no]
246   --enable-liblensfun      enable lensfun lens correction [no]
247   --enable-libmodplug      enable ModPlug via libmodplug [no]
248   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
249   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
250   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
251   --enable-libopencv       enable video filtering via libopencv [no]
252   --enable-libopenh264     enable H.264 encoding via OpenH264 [no]
253   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
254   --enable-libopenmpt      enable decoding tracked files via libopenmpt [no]
255   --enable-libopus         enable Opus de/encoding via libopus [no]
256   --enable-libpulse        enable Pulseaudio input via libpulse [no]
257   --enable-librav1e        enable AV1 encoding via rav1e [no]
258   --enable-librsvg         enable SVG rasterization via librsvg [no]
259   --enable-librubberband   enable rubberband needed for rubberband filter [no]
260   --enable-librtmp         enable RTMP[E] support via librtmp [no]
261   --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
262   --enable-libsmbclient    enable Samba protocol via libsmbclient [no]
263   --enable-libsnappy       enable Snappy compression, needed for hap encoding [no]
264   --enable-libsoxr         enable Include libsoxr resampling [no]
265   --enable-libspeex        enable Speex de/encoding via libspeex [no]
266   --enable-libsrt          enable Haivision SRT protocol via libsrt [no]
267   --enable-libssh          enable SFTP protocol via libssh [no]
268   --enable-libtensorflow   enable TensorFlow as a DNN module backend
269                            for DNN based filters like sr [no]
270   --enable-libtesseract    enable Tesseract, needed for ocr filter [no]
271   --enable-libtheora       enable Theora encoding via libtheora [no]
272   --enable-libtls          enable LibreSSL (via libtls), needed for https support
273                            if openssl, gnutls or mbedtls is not used [no]
274   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
275   --enable-libv4l2         enable libv4l2/v4l-utils [no]
276   --enable-libvidstab      enable video stabilization using vid.stab [no]
277   --enable-libvmaf         enable vmaf filter via libvmaf [no]
278   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
279   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
280                            native implementation exists [no]
281   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
282   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
283   --enable-libwebp         enable WebP encoding via libwebp [no]
284   --enable-libx264         enable H.264 encoding via x264 [no]
285   --enable-libx265         enable HEVC encoding via x265 [no]
286   --enable-libxavs         enable AVS encoding via xavs [no]
287   --enable-libxavs2        enable AVS2 encoding via xavs2 [no]
288   --enable-libxcb          enable X11 grabbing using XCB [autodetect]
289   --enable-libxcb-shm      enable X11 grabbing shm communication [autodetect]
290   --enable-libxcb-xfixes   enable X11 grabbing mouse rendering [autodetect]
291   --enable-libxcb-shape    enable X11 grabbing shape rendering [autodetect]
292   --enable-libxvid         enable Xvid encoding via xvidcore,
293                            native MPEG-4/Xvid encoder exists [no]
294   --enable-libxml2         enable XML parsing using the C library libxml2, needed
295                            for dash demuxing support [no]
296   --enable-libzimg         enable z.lib, needed for zscale filter [no]
297   --enable-libzmq          enable message passing via libzmq [no]
298   --enable-libzvbi         enable teletext support via libzvbi [no]
299   --enable-lv2             enable LV2 audio filtering [no]
300   --disable-lzma           disable lzma [autodetect]
301   --enable-decklink        enable Blackmagic DeckLink I/O support [no]
302   --enable-mbedtls         enable mbedTLS, needed for https support
303                            if openssl, gnutls or libtls is not used [no]
304   --enable-mediacodec      enable Android MediaCodec support [no]
305   --enable-libmysofa       enable libmysofa, needed for sofalizer filter [no]
306   --enable-openal          enable OpenAL 1.1 capture support [no]
307   --enable-opencl          enable OpenCL processing [no]
308   --enable-opengl          enable OpenGL rendering [no]
309   --enable-openssl         enable openssl, needed for https support
310                            if gnutls, libtls or mbedtls is not used [no]
311   --enable-pocketsphinx    enable PocketSphinx, needed for asr filter [no]
312   --disable-sndio          disable sndio support [autodetect]
313   --disable-schannel       disable SChannel SSP, needed for TLS support on
314                            Windows if openssl and gnutls are not used [autodetect]
315   --disable-sdl2           disable sdl2 [autodetect]
316   --disable-securetransport disable Secure Transport, needed for TLS support
317                            on OSX if openssl and gnutls are not used [autodetect]
318   --enable-vapoursynth     enable VapourSynth demuxer [no]
319   --disable-xlib           disable xlib [autodetect]
320   --disable-zlib           disable zlib [autodetect]
321
322   The following libraries provide various hardware acceleration features:
323   --disable-amf            disable AMF video encoding code [autodetect]
324   --disable-audiotoolbox   disable Apple AudioToolbox code [autodetect]
325   --enable-cuda-nvcc       enable Nvidia CUDA compiler [no]
326   --disable-cuda-llvm      disable CUDA compilation using clang [autodetect]
327   --disable-cuvid          disable Nvidia CUVID support [autodetect]
328   --disable-d3d11va        disable Microsoft Direct3D 11 video acceleration code [autodetect]
329   --disable-dxva2          disable Microsoft DirectX 9 video acceleration code [autodetect]
330   --disable-ffnvcodec      disable dynamically linked Nvidia code [autodetect]
331   --enable-libdrm          enable DRM code (Linux) [no]
332   --enable-libmfx          enable Intel MediaSDK (AKA Quick Sync Video) code via libmfx [no]
333   --enable-libnpp          enable Nvidia Performance Primitives-based code [no]
334   --enable-mmal            enable Broadcom Multi-Media Abstraction Layer (Raspberry Pi) via MMAL [no]
335   --disable-nvdec          disable Nvidia video decoding acceleration (via hwaccel) [autodetect]
336   --disable-nvenc          disable Nvidia video encoding code [autodetect]
337   --enable-omx             enable OpenMAX IL code [no]
338   --enable-omx-rpi         enable OpenMAX IL code for Raspberry Pi [no]
339   --enable-rkmpp           enable Rockchip Media Process Platform code [no]
340   --disable-v4l2-m2m       disable V4L2 mem2mem code [autodetect]
341   --disable-vaapi          disable Video Acceleration API (mainly Unix/Intel) code [autodetect]
342   --disable-vdpau          disable Nvidia Video Decode and Presentation API for Unix code [autodetect]
343   --disable-videotoolbox   disable VideoToolbox code [autodetect]
344
345 Toolchain options:
346   --arch=ARCH              select architecture [$arch]
347   --cpu=CPU                select the minimum required CPU (affects
348                            instruction selection, may crash on older CPUs)
349   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
350   --progs-suffix=SUFFIX    program name suffix []
351   --enable-cross-compile   assume a cross-compiler is used
352   --sysroot=PATH           root of cross-build tree
353   --sysinclude=PATH        location of cross-build system headers
354   --target-os=OS           compiler targets OS [$target_os]
355   --target-exec=CMD        command to run executables on target
356   --target-path=DIR        path to view of build directory on target
357   --target-samples=DIR     path to samples directory on target
358   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
359   --toolchain=NAME         set tool defaults according to NAME
360                            (gcc-asan, clang-asan, gcc-msan, clang-msan,
361                            gcc-tsan, clang-tsan, gcc-usan, clang-usan,
362                            valgrind-massif, valgrind-memcheck,
363                            msvc, icl, gcov, llvm-cov, hardened)
364   --nm=NM                  use nm tool NM [$nm_default]
365   --ar=AR                  use archive tool AR [$ar_default]
366   --as=AS                  use assembler AS [$as_default]
367   --ln_s=LN_S              use symbolic link tool LN_S [$ln_s_default]
368   --strip=STRIP            use strip tool STRIP [$strip_default]
369   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
370   --x86asmexe=EXE          use nasm-compatible assembler EXE [$x86asmexe_default]
371   --cc=CC                  use C compiler CC [$cc_default]
372   --cxx=CXX                use C compiler CXX [$cxx_default]
373   --objcc=OCC              use ObjC compiler OCC [$cc_default]
374   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
375   --nvcc=NVCC              use Nvidia CUDA compiler NVCC or clang [$nvcc_default]
376   --ld=LD                  use linker LD [$ld_default]
377   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
378   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
379   --ranlib=RANLIB          use ranlib RANLIB [$ranlib_default]
380   --doxygen=DOXYGEN        use DOXYGEN to generate API doc [$doxygen_default]
381   --host-cc=HOSTCC         use host C compiler HOSTCC
382   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
383   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
384   --host-ld=HOSTLD         use host linker HOSTLD
385   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
386   --host-extralibs=HLIBS   use libs HLIBS when linking for host
387   --host-os=OS             compiler host OS [$target_os]
388   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
389   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
390   --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
391   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
392   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
393   --extra-ldsoflags=ELDFLAGS add ELDFLAGS to LDSOFLAGS [$LDSOFLAGS]
394   --extra-libs=ELIBS       add ELIBS [$ELIBS]
395   --extra-version=STRING   version string suffix []
396   --optflags=OPTFLAGS      override optimization-related compiler flags
397   --nvccflags=NVCCFLAGS    override nvcc flags [$nvccflags_default]
398   --build-suffix=SUFFIX    library name suffix []
399   --enable-pic             build position-independent code
400   --enable-thumb           compile for Thumb instruction set
401   --enable-lto             use link-time optimization
402   --env="ENV=override"     override the environment variables
403
404 Advanced options (experts only):
405   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
406   --custom-allocator=NAME  use a supported custom allocator
407   --disable-symver         disable symbol versioning
408   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
409   --disable-safe-bitstream-reader
410                            disable buffer boundary checking in bitreaders
411                            (faster, but may crash)
412   --sws-max-filter-size=N  the max filter size swscale uses [$sws_max_filter_size_default]
413
414 Optimization options (experts only):
415   --disable-asm            disable all assembly optimizations
416   --disable-altivec        disable AltiVec optimizations
417   --disable-vsx            disable VSX optimizations
418   --disable-power8         disable POWER8 optimizations
419   --disable-amd3dnow       disable 3DNow! optimizations
420   --disable-amd3dnowext    disable 3DNow! extended optimizations
421   --disable-mmx            disable MMX optimizations
422   --disable-mmxext         disable MMXEXT optimizations
423   --disable-sse            disable SSE optimizations
424   --disable-sse2           disable SSE2 optimizations
425   --disable-sse3           disable SSE3 optimizations
426   --disable-ssse3          disable SSSE3 optimizations
427   --disable-sse4           disable SSE4 optimizations
428   --disable-sse42          disable SSE4.2 optimizations
429   --disable-avx            disable AVX optimizations
430   --disable-xop            disable XOP optimizations
431   --disable-fma3           disable FMA3 optimizations
432   --disable-fma4           disable FMA4 optimizations
433   --disable-avx2           disable AVX2 optimizations
434   --disable-avx512         disable AVX-512 optimizations
435   --disable-aesni          disable AESNI optimizations
436   --disable-armv5te        disable armv5te optimizations
437   --disable-armv6          disable armv6 optimizations
438   --disable-armv6t2        disable armv6t2 optimizations
439   --disable-vfp            disable VFP optimizations
440   --disable-neon           disable NEON optimizations
441   --disable-inline-asm     disable use of inline assembly
442   --disable-x86asm         disable use of standalone x86 assembly
443   --disable-mipsdsp        disable MIPS DSP ASE R1 optimizations
444   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
445   --disable-msa            disable MSA optimizations
446   --disable-msa2           disable MSA2 optimizations
447   --disable-mipsfpu        disable floating point MIPS optimizations
448   --disable-mmi            disable Loongson SIMD optimizations
449   --disable-fast-unaligned consider unaligned accesses slow
450
451 Developer options (useful when working on FFmpeg itself):
452   --disable-debug          disable debugging symbols
453   --enable-debug=LEVEL     set the debug level [$debuglevel]
454   --disable-optimizations  disable compiler optimizations
455   --enable-extra-warnings  enable more compiler warnings
456   --disable-stripping      disable stripping of executables and shared libraries
457   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
458                            2 causes a slowdown at runtime.
459   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
460   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
461                            leaks and errors, using the specified valgrind binary.
462                            Cannot be combined with --target-exec
463   --enable-ftrapv          Trap arithmetic overflows
464   --samples=PATH           location of test samples for FATE, if not set use
465                            \$FATE_SAMPLES at make invocation time.
466   --enable-neon-clobber-test check NEON registers for clobbering (should be
467                            used only for debugging purposes)
468   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
469                            should be used only for debugging purposes)
470   --enable-random          randomly enable/disable components
471   --disable-random
472   --enable-random=LIST     randomly enable/disable specific components or
473   --disable-random=LIST    component groups. LIST is a comma-separated list
474                            of NAME[:PROB] entries where NAME is a component
475                            (group) and PROB the probability associated with
476                            NAME (default 0.5).
477   --random-seed=VALUE      seed value for --enable/disable-random
478   --disable-valgrind-backtrace do not print a backtrace under Valgrind
479                            (only applies to --disable-optimizations builds)
480   --enable-ossfuzz         Enable building fuzzer tool
481   --libfuzzer=PATH         path to libfuzzer
482   --ignore-tests=TESTS     comma-separated list (without "fate-" prefix
483                            in the name) of tests whose result is ignored
484   --enable-linux-perf      enable Linux Performance Monitor API
485   --disable-large-tests    disable tests that use a large amount of memory
486
487 NOTE: Object files are built at the place where configure is launched.
488 EOF
489   exit 0
490 }
491
492 if test -t 1 && which tput >/dev/null 2>&1; then
493     ncolors=$(tput colors)
494     if test -n "$ncolors" && test $ncolors -ge 8; then
495         bold_color=$(tput bold)
496         warn_color=$(tput setaf 3)
497         error_color=$(tput setaf 1)
498         reset_color=$(tput sgr0)
499     fi
500     # 72 used instead of 80 since that's the default of pr
501     ncols=$(tput cols)
502 fi
503 : ${ncols:=72}
504
505 log(){
506     echo "$@" >> $logfile
507 }
508
509 log_file(){
510     log BEGIN "$1"
511     log_file_i=1
512     while IFS= read -r log_file_line; do
513         printf '%5d\t%s\n' "$log_file_i" "$log_file_line"
514         log_file_i=$(($log_file_i+1))
515     done < "$1" >> "$logfile"
516     log END "$1"
517 }
518
519 warn(){
520     log "WARNING: $*"
521     WARNINGS="${WARNINGS}WARNING: $*\n"
522 }
523
524 die(){
525     log "$@"
526     echo "$error_color$bold_color$@$reset_color"
527     cat <<EOF
528
529 If you think configure made a mistake, make sure you are using the latest
530 version from Git.  If the latest version fails, report the problem to the
531 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
532 EOF
533     if disabled logging; then
534         cat <<EOF
535 Rerun configure with logging enabled (do not use --disable-logging), and
536 include the log this produces with your report.
537 EOF
538     else
539         cat <<EOF
540 Include the log file "$logfile" produced by configure as this will help
541 solve the problem.
542 EOF
543     fi
544     exit 1
545 }
546
547 # Avoid locale weirdness, besides we really just want to translate ASCII.
548 toupper(){
549     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
550 }
551
552 tolower(){
553     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
554 }
555
556 c_escape(){
557     echo "$*" | sed 's/["\\]/\\\0/g'
558 }
559
560 sh_quote(){
561     v=$(echo "$1" | sed "s/'/'\\\\''/g")
562     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
563     echo "$v"
564 }
565
566 cleanws(){
567     echo "$@" | sed 's/^ *//;s/[[:space:]][[:space:]]*/ /g;s/ *$//'
568 }
569
570 filter(){
571     pat=$1
572     shift
573     for v; do
574         eval "case '$v' in $pat) printf '%s ' '$v' ;; esac"
575     done
576 }
577
578 filter_out(){
579     pat=$1
580     shift
581     for v; do
582         eval "case '$v' in $pat) ;; *) printf '%s ' '$v' ;; esac"
583     done
584 }
585
586 map(){
587     m=$1
588     shift
589     for v; do eval $m; done
590 }
591
592 add_suffix(){
593     suffix=$1
594     shift
595     for v; do echo ${v}${suffix}; done
596 }
597
598 remove_suffix(){
599     suffix=$1
600     shift
601     for v; do echo ${v%$suffix}; done
602 }
603
604 set_all(){
605     value=$1
606     shift
607     for var in $*; do
608         eval $var=$value
609     done
610 }
611
612 set_weak(){
613     value=$1
614     shift
615     for var; do
616         eval : \${$var:=$value}
617     done
618 }
619
620 sanitize_var_name(){
621     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
622 }
623
624 set_sanitized(){
625     var=$1
626     shift
627     eval $(sanitize_var_name "$var")='$*'
628 }
629
630 get_sanitized(){
631     eval echo \$$(sanitize_var_name "$1")
632 }
633
634 pushvar(){
635     for pvar in $*; do
636         eval level=\${${pvar}_level:=0}
637         eval ${pvar}_${level}="\$$pvar"
638         eval ${pvar}_level=$(($level+1))
639     done
640 }
641
642 popvar(){
643     for pvar in $*; do
644         eval level=\${${pvar}_level:-0}
645         test $level = 0 && continue
646         eval level=$(($level-1))
647         eval $pvar="\${${pvar}_${level}}"
648         eval ${pvar}_level=$level
649         eval unset ${pvar}_${level}
650     done
651 }
652
653 request(){
654     for var in $*; do
655         eval ${var}_requested=yes
656         eval $var=
657     done
658 }
659
660 warn_if_gets_disabled(){
661     for var in $*; do
662         WARN_IF_GETS_DISABLED_LIST="$WARN_IF_GETS_DISABLED_LIST $var"
663     done
664 }
665
666 enable(){
667     set_all yes $*
668 }
669
670 disable(){
671     set_all no $*
672 }
673
674 disable_with_reason(){
675     disable $1
676     eval "${1}_disable_reason=\"$2\""
677     if requested $1; then
678         die "ERROR: $1 requested, but $2"
679     fi
680 }
681
682 enable_weak(){
683     set_weak yes $*
684 }
685
686 disable_weak(){
687     set_weak no $*
688 }
689
690 enable_sanitized(){
691     for var; do
692         enable $(sanitize_var_name $var)
693     done
694 }
695
696 disable_sanitized(){
697     for var; do
698         disable $(sanitize_var_name $var)
699     done
700 }
701
702 do_enable_deep(){
703     for var; do
704         enabled $var && continue
705         set -- $var
706         eval enable_deep \$${var}_select
707         var=$1
708         eval enable_deep_weak \$${var}_suggest
709     done
710 }
711
712 enable_deep(){
713     do_enable_deep $*
714     enable $*
715 }
716
717 enable_deep_weak(){
718     for var; do
719         disabled $var && continue
720         set -- $var
721         do_enable_deep $var
722         var=$1
723         enable_weak $var
724     done
725 }
726
727 requested(){
728     test "${1#!}" = "$1" && op="=" || op="!="
729     eval test "x\$${1#!}_requested" $op "xyes"
730 }
731
732 enabled(){
733     test "${1#!}" = "$1" && op="=" || op="!="
734     eval test "x\$${1#!}" $op "xyes"
735 }
736
737 disabled(){
738     test "${1#!}" = "$1" && op="=" || op="!="
739     eval test "x\$${1#!}" $op "xno"
740 }
741
742 enabled_all(){
743     for opt; do
744         enabled $opt || return 1
745     done
746 }
747
748 disabled_all(){
749     for opt; do
750         disabled $opt || return 1
751     done
752 }
753
754 enabled_any(){
755     for opt; do
756         enabled $opt && return 0
757     done
758 }
759
760 disabled_any(){
761     for opt; do
762         disabled $opt && return 0
763     done
764     return 1
765 }
766
767 set_default(){
768     for opt; do
769         eval : \${$opt:=\$${opt}_default}
770     done
771 }
772
773 is_in(){
774     value=$1
775     shift
776     for var in $*; do
777         [ $var = $value ] && return 0
778     done
779     return 1
780 }
781
782 # The cfg loop is very hot (several thousands iterations), and in bash also
783 # potentialy quite slow. Try to abort the iterations early, preferably without
784 # calling functions. 70%+ of the time cfg is already done or without deps.
785 check_deps(){
786     for cfg; do
787         eval [ x\$${cfg}_checking = xdone ] && continue
788         eval [ x\$${cfg}_checking = xinprogress ] && die "Circular dependency for $cfg."
789
790         eval "
791         dep_all=\$${cfg}_deps
792         dep_any=\$${cfg}_deps_any
793         dep_con=\$${cfg}_conflict
794         dep_sel=\$${cfg}_select
795         dep_sgs=\$${cfg}_suggest
796         dep_ifa=\$${cfg}_if
797         dep_ifn=\$${cfg}_if_any
798         "
799
800         # most of the time here $cfg has no deps - avoid costly no-op work
801         if [ "$dep_all$dep_any$dep_con$dep_sel$dep_sgs$dep_ifa$dep_ifn" ]; then
802             eval ${cfg}_checking=inprogress
803
804             set -- $cfg "$dep_all" "$dep_any" "$dep_con" "$dep_sel" "$dep_sgs" "$dep_ifa" "$dep_ifn"
805             check_deps $dep_all $dep_any $dep_con $dep_sel $dep_sgs $dep_ifa $dep_ifn
806             cfg=$1; dep_all=$2; dep_any=$3; dep_con=$4; dep_sel=$5 dep_sgs=$6; dep_ifa=$7; dep_ifn=$8
807
808             [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
809             [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
810             enabled_all  $dep_all || { disable_with_reason $cfg "not all dependencies are satisfied: $dep_all"; }
811             enabled_any  $dep_any || { disable_with_reason $cfg "not any dependency is satisfied: $dep_any"; }
812             disabled_all $dep_con || { disable_with_reason $cfg "some conflicting dependencies are unsatisfied: $dep_con"; }
813             disabled_any $dep_sel && { disable_with_reason $cfg "some selected dependency is unsatisfied: $dep_sel"; }
814
815             enabled $cfg && enable_deep_weak $dep_sel $dep_sgs
816
817             for dep in $dep_all $dep_any $dep_sel $dep_sgs; do
818                 # filter out library deps, these do not belong in extralibs
819                 is_in $dep $LIBRARY_LIST && continue
820                 enabled $dep && eval append ${cfg}_extralibs ${dep}_extralibs
821             done
822         fi
823
824         eval ${cfg}_checking=done
825     done
826 }
827
828 print_config(){
829     pfx=$1
830     files=$2
831     shift 2
832     map 'eval echo "$v \${$v:-no}"' "$@" |
833     awk "BEGIN { split(\"$files\", files) }
834         {
835             c = \"$pfx\" toupper(\$1);
836             v = \$2;
837             sub(/yes/, 1, v);
838             sub(/no/,  0, v);
839             for (f in files) {
840                 file = files[f];
841                 if (file ~ /\\.h\$/) {
842                     printf(\"#define %s %d\\n\", c, v) >>file;
843                 } else if (file ~ /\\.asm\$/) {
844                     printf(\"%%define %s %d\\n\", c, v) >>file;
845                 } else if (file ~ /\\.mak\$/) {
846                     n = -v ? \"\" : \"!\";
847                     printf(\"%s%s=yes\\n\", n, c) >>file;
848                 } else if (file ~ /\\.texi\$/) {
849                     pre = -v ? \"\" : \"@c \";
850                     yesno = \$2;
851                     c2 = tolower(c);
852                     gsub(/_/, \"-\", c2);
853                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
854                 }
855             }
856         }"
857 }
858
859 print_enabled(){
860     suf=$1
861     shift
862     for v; do
863         enabled $v && printf "%s\n" ${v%$suf}
864     done
865 }
866
867 append(){
868     var=$1
869     shift
870     eval "$var=\"\$$var $*\""
871 }
872
873 prepend(){
874     var=$1
875     shift
876     eval "$var=\"$* \$$var\""
877 }
878
879 reverse () {
880     eval '
881         reverse_out=
882         for v in $'$1'; do
883             reverse_out="$v $reverse_out"
884         done
885         '$1'=$reverse_out
886     '
887 }
888
889 # keeps the last occurence of each non-unique item
890 unique(){
891     unique_out=
892     eval unique_in=\$$1
893     reverse unique_in
894     for v in $unique_in; do
895         # " $unique_out" +space such that every item is surrounded with spaces
896         case " $unique_out" in *" $v "*) continue; esac  # already in list
897         unique_out="$unique_out$v "
898     done
899     reverse unique_out
900     eval $1=\$unique_out
901 }
902
903 resolve(){
904     resolve_out=
905     eval resolve_in=\$$1
906     for v in $resolve_in; do
907         eval 'resolve_out="$resolve_out$'$v' "'
908     done
909     eval $1=\$resolve_out
910 }
911
912 add_cppflags(){
913     append CPPFLAGS "$@"
914 }
915
916 add_cflags(){
917     append CFLAGS $($cflags_filter "$@")
918 }
919
920 add_cflags_headers(){
921     append CFLAGS_HEADERS $($cflags_filter "$@")
922 }
923
924 add_cxxflags(){
925     append CXXFLAGS $($cflags_filter "$@")
926 }
927
928 add_objcflags(){
929     append OBJCFLAGS $($objcflags_filter "$@")
930 }
931
932 add_asflags(){
933     append ASFLAGS $($asflags_filter "$@")
934 }
935
936 add_ldflags(){
937     append LDFLAGS $($ldflags_filter "$@")
938 }
939
940 add_ldexeflags(){
941     append LDEXEFLAGS $($ldflags_filter "$@")
942 }
943
944 add_ldsoflags(){
945     append LDSOFLAGS $($ldflags_filter "$@")
946 }
947
948 add_extralibs(){
949     prepend extralibs $($ldflags_filter "$@")
950 }
951
952 add_stripflags(){
953     append ASMSTRIPFLAGS "$@"
954 }
955
956 add_host_cppflags(){
957     append host_cppflags "$@"
958 }
959
960 add_host_cflags(){
961     append host_cflags $($host_cflags_filter "$@")
962 }
963
964 add_host_ldflags(){
965     append host_ldflags $($host_ldflags_filter "$@")
966 }
967
968 add_compat(){
969     append compat_objs $1
970     shift
971     map 'add_cppflags -D$v' "$@"
972 }
973
974 test_cmd(){
975     log "$@"
976     "$@" >> $logfile 2>&1
977 }
978
979 test_stat(){
980     log test_stat "$@"
981     stat "$1" >> $logfile 2>&1
982 }
983
984 cc_e(){
985     eval printf '%s\\n' $CC_E
986 }
987
988 cc_o(){
989     eval printf '%s\\n' $CC_O
990 }
991
992 as_o(){
993     eval printf '%s\\n' $AS_O
994 }
995
996 x86asm_o(){
997     eval printf '%s\\n' $X86ASM_O
998 }
999
1000 ld_o(){
1001     eval printf '%s\\n' $LD_O
1002 }
1003
1004 hostcc_e(){
1005     eval printf '%s\\n' $HOSTCC_E
1006 }
1007
1008 hostcc_o(){
1009     eval printf '%s\\n' $HOSTCC_O
1010 }
1011
1012 nvcc_o(){
1013     eval printf '%s\\n' $NVCC_O
1014 }
1015
1016 test_cc(){
1017     log test_cc "$@"
1018     cat > $TMPC
1019     log_file $TMPC
1020     test_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
1021 }
1022
1023 test_cxx(){
1024     log test_cxx "$@"
1025     cat > $TMPCPP
1026     log_file $TMPCPP
1027     test_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
1028 }
1029
1030 test_objcc(){
1031     log test_objcc "$@"
1032     cat > $TMPM
1033     log_file $TMPM
1034     test_cmd $objcc -Werror=missing-prototypes $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPM
1035 }
1036
1037 test_nvcc(){
1038     log test_nvcc "$@"
1039     cat > $TMPCU
1040     log_file $TMPCU
1041     tmpcu_=$TMPCU
1042     tmpo_=$TMPO
1043     [ -x "$(command -v cygpath)" ] && tmpcu_=$(cygpath -m $tmpcu_) && tmpo_=$(cygpath -m $tmpo_)
1044     test_cmd $nvcc $nvccflags "$@" $NVCC_C $(nvcc_o $tmpo_) $tmpcu_
1045 }
1046
1047 check_nvcc() {
1048     log check_nvcc "$@"
1049     name=$1
1050     shift 1
1051     disabled $name && return
1052     disable $name
1053     test_nvcc "$@" <<EOF && enable $name
1054 extern "C" {
1055     __global__ void hello(unsigned char *data) {}
1056 }
1057 EOF
1058 }
1059
1060 test_cpp(){
1061     log test_cpp "$@"
1062     cat > $TMPC
1063     log_file $TMPC
1064     test_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
1065 }
1066
1067 test_as(){
1068     log test_as "$@"
1069     cat > $TMPS
1070     log_file $TMPS
1071     test_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
1072 }
1073
1074 test_x86asm(){
1075     log test_x86asm "$@"
1076     echo "$1" > $TMPASM
1077     log_file $TMPASM
1078     shift
1079     test_cmd $x86asmexe $X86ASMFLAGS -Werror "$@" $(x86asm_o $TMPO) $TMPASM
1080 }
1081
1082 check_cmd(){
1083     log check_cmd "$@"
1084     cmd=$1
1085     disabled $cmd && return
1086     disable $cmd
1087     test_cmd $@ && enable $cmd
1088 }
1089
1090 check_as(){
1091     log check_as "$@"
1092     name=$1
1093     code=$2
1094     shift 2
1095     disable $name
1096     test_as $@ <<EOF && enable $name
1097 $code
1098 EOF
1099 }
1100
1101 check_inline_asm(){
1102     log check_inline_asm "$@"
1103     name="$1"
1104     code="$2"
1105     shift 2
1106     disable $name
1107     test_cc "$@" <<EOF && enable $name
1108 void foo(void){ __asm__ volatile($code); }
1109 EOF
1110 }
1111
1112 check_inline_asm_flags(){
1113     log check_inline_asm_flags "$@"
1114     name="$1"
1115     code="$2"
1116     flags=''
1117     shift 2
1118     while [ "$1" != "" ]; do
1119       append flags $1
1120       shift
1121     done;
1122     disable $name
1123     cat > $TMPC <<EOF
1124 void foo(void){ __asm__ volatile($code); }
1125 EOF
1126     log_file $TMPC
1127     test_cmd $cc $CPPFLAGS $CFLAGS $flags "$@" $CC_C $(cc_o $TMPO) $TMPC &&
1128     enable $name && add_cflags $flags && add_asflags $flags && add_ldflags $flags
1129 }
1130
1131 check_insn(){
1132     log check_insn "$@"
1133     check_inline_asm ${1}_inline "\"$2\""
1134     check_as ${1}_external "$2"
1135 }
1136
1137 check_x86asm(){
1138     log check_x86asm "$@"
1139     name=$1
1140     shift
1141     disable $name
1142     test_x86asm "$@" && enable $name
1143 }
1144
1145 test_ld(){
1146     log test_ld "$@"
1147     type=$1
1148     shift 1
1149     flags=$(filter_out '-l*|*.so' $@)
1150     libs=$(filter '-l*|*.so' $@)
1151     test_$type $($cflags_filter $flags) || return
1152     flags=$($ldflags_filter $flags)
1153     libs=$($ldflags_filter $libs)
1154     test_cmd $ld $LDFLAGS $LDEXEFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
1155 }
1156
1157 check_ld(){
1158     log check_ld "$@"
1159     type=$1
1160     name=$2
1161     shift 2
1162     disable $name
1163     test_ld $type $@ && enable $name
1164 }
1165
1166 print_include(){
1167     hdr=$1
1168     test "${hdr%.h}" = "${hdr}" &&
1169         echo "#include $hdr"    ||
1170         echo "#include <$hdr>"
1171 }
1172
1173 test_code(){
1174     log test_code "$@"
1175     check=$1
1176     headers=$2
1177     code=$3
1178     shift 3
1179     {
1180         for hdr in $headers; do
1181             print_include $hdr
1182         done
1183         echo "int main(void) { $code; return 0; }"
1184     } | test_$check "$@"
1185 }
1186
1187 check_cppflags(){
1188     log check_cppflags "$@"
1189     test_cpp "$@" <<EOF && append CPPFLAGS "$@"
1190 #include <stdlib.h>
1191 EOF
1192 }
1193
1194 test_cflags(){
1195     log test_cflags "$@"
1196     set -- $($cflags_filter "$@")
1197     test_cc "$@" <<EOF
1198 int x;
1199 EOF
1200 }
1201
1202 check_cflags(){
1203     log check_cflags "$@"
1204     test_cflags "$@" && add_cflags "$@"
1205 }
1206
1207 check_cxxflags(){
1208     log check_cxxflags "$@"
1209     set -- $($cflags_filter "$@")
1210     test_cxx "$@" <<EOF && append CXXFLAGS "$@"
1211 int x;
1212 EOF
1213 }
1214
1215 test_objcflags(){
1216     log test_objcflags "$@"
1217     set -- $($objcflags_filter "$@")
1218     test_objcc "$@" <<EOF
1219 int x;
1220 EOF
1221 }
1222
1223 check_objcflags(){
1224     log check_objcflags "$@"
1225     test_objcflags "$@" && add_objcflags "$@"
1226 }
1227
1228 test_ldflags(){
1229     log test_ldflags "$@"
1230     set -- $($ldflags_filter "$@")
1231     test_ld "cc" "$@" <<EOF
1232 int main(void){ return 0; }
1233 EOF
1234 }
1235
1236 check_ldflags(){
1237     log check_ldflags "$@"
1238     test_ldflags "$@" && add_ldflags "$@"
1239 }
1240
1241 test_stripflags(){
1242     log test_stripflags "$@"
1243     # call test_cc to get a fresh TMPO
1244     test_cc <<EOF
1245 int main(void) { return 0; }
1246 EOF
1247     test_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
1248 }
1249
1250 check_stripflags(){
1251     log check_stripflags "$@"
1252     test_stripflags "$@" && add_stripflags "$@"
1253 }
1254
1255 check_headers(){
1256     log check_headers "$@"
1257     headers=$1
1258     shift
1259     disable_sanitized $headers
1260     {
1261         for hdr in $headers; do
1262             print_include $hdr
1263         done
1264         echo "int x;"
1265     } | test_cpp "$@" && enable_sanitized $headers
1266 }
1267
1268 check_header_objcc(){
1269     log check_header_objcc "$@"
1270     rm -f -- "$TMPO"
1271     header=$1
1272     shift
1273     disable_sanitized $header
1274     {
1275        echo "#include <$header>"
1276        echo "int main(void) { return 0; }"
1277     } | test_objcc && test_stat "$TMPO" && enable_sanitized $header
1278 }
1279
1280 check_apple_framework(){
1281     log check_apple_framework "$@"
1282     framework="$1"
1283     name="$(tolower $framework)"
1284     header="${framework}/${framework}.h"
1285     disable $name
1286     check_header_objcc $header &&
1287         enable $name && eval ${name}_extralibs='"-framework $framework"'
1288 }
1289
1290 check_func(){
1291     log check_func "$@"
1292     func=$1
1293     shift
1294     disable $func
1295     test_ld "cc" "$@" <<EOF && enable $func
1296 extern int $func();
1297 int main(void){ $func(); }
1298 EOF
1299 }
1300
1301 check_complexfunc(){
1302     log check_complexfunc "$@"
1303     func=$1
1304     narg=$2
1305     shift 2
1306     test $narg = 2 && args="f, g" || args="f * I"
1307     disable $func
1308     test_ld "cc" "$@" <<EOF && enable $func
1309 #include <complex.h>
1310 #include <math.h>
1311 float foo(complex float f, complex float g) { return $func($args); }
1312 int main(void){ return (int) foo; }
1313 EOF
1314 }
1315
1316 check_mathfunc(){
1317     log check_mathfunc "$@"
1318     func=$1
1319     narg=$2
1320     shift 2
1321     test $narg = 2 && args="f, g" || args="f"
1322     disable $func
1323     test_ld "cc" "$@" <<EOF && enable $func
1324 #include <math.h>
1325 float foo(float f, float g) { return $func($args); }
1326 int main(void){ return (int) foo; }
1327 EOF
1328 }
1329
1330 check_func_headers(){
1331     log check_func_headers "$@"
1332     headers=$1
1333     funcs=$2
1334     shift 2
1335     {
1336         for hdr in $headers; do
1337             print_include $hdr
1338         done
1339         echo "#include <stdint.h>"
1340         for func in $funcs; do
1341             echo "long check_$func(void) { return (long) $func; }"
1342         done
1343         echo "int main(void) { int ret = 0;"
1344         # LTO could optimize out the test functions without this
1345         for func in $funcs; do
1346             echo " ret |= ((intptr_t)check_$func) & 0xFFFF;"
1347         done
1348         echo "return ret; }"
1349     } | test_ld "cc" "$@" && enable $funcs && enable_sanitized $headers
1350 }
1351
1352 check_class_headers_cpp(){
1353     log check_class_headers_cpp "$@"
1354     headers=$1
1355     classes=$2
1356     shift 2
1357     {
1358         for hdr in $headers; do
1359             echo "#include <$hdr>"
1360         done
1361         echo "int main(void) { "
1362         i=1
1363         for class in $classes; do
1364             echo "$class obj$i;"
1365             i=$(expr $i + 1)
1366         done
1367         echo "return 0; }"
1368     } | test_ld "cxx" "$@" && enable $funcs && enable_sanitized $headers
1369 }
1370
1371 test_cpp_condition(){
1372     log test_cpp_condition "$@"
1373     header=$1
1374     condition=$2
1375     shift 2
1376     test_cpp "$@" <<EOF
1377 #include <$header>
1378 #if !($condition)
1379 #error "unsatisfied condition: $condition"
1380 #endif
1381 EOF
1382 }
1383
1384 check_cpp_condition(){
1385     log check_cpp_condition "$@"
1386     name=$1
1387     shift 1
1388     disable $name
1389     test_cpp_condition "$@" && enable $name
1390 }
1391
1392 test_cflags_cc(){
1393     log test_cflags_cc "$@"
1394     flags=$1
1395     header=$2
1396     condition=$3
1397     shift 3
1398     set -- $($cflags_filter "$flags")
1399     test_cc "$@" <<EOF
1400 #include <$header>
1401 #if !($condition)
1402 #error "unsatisfied condition: $condition"
1403 #endif
1404 EOF
1405 }
1406
1407 check_lib(){
1408     log check_lib "$@"
1409     name="$1"
1410     headers="$2"
1411     funcs="$3"
1412     shift 3
1413     disable $name
1414     check_func_headers "$headers" "$funcs" "$@" &&
1415         enable $name && eval ${name}_extralibs="\$@"
1416 }
1417
1418 check_lib_cpp(){
1419     log check_lib_cpp "$@"
1420     name="$1"
1421     headers="$2"
1422     classes="$3"
1423     shift 3
1424     disable $name
1425     check_class_headers_cpp "$headers" "$classes" "$@" &&
1426         enable $name && eval ${name}_extralibs="\$@"
1427 }
1428
1429 test_pkg_config(){
1430     log test_pkg_config "$@"
1431     name="$1"
1432     pkg_version="$2"
1433     pkg="${2%% *}"
1434     headers="$3"
1435     funcs="$4"
1436     shift 4
1437     disable $name
1438     test_cmd $pkg_config --exists --print-errors $pkg_version || return
1439     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1440     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1441     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1442         enable $name &&
1443         set_sanitized "${name}_cflags"    $pkg_cflags &&
1444         set_sanitized "${name}_extralibs" $pkg_libs
1445 }
1446
1447 check_pkg_config(){
1448     log check_pkg_config "$@"
1449     name="$1"
1450     test_pkg_config "$@" &&
1451         eval add_cflags \$${name}_cflags
1452 }
1453
1454 test_exec(){
1455     test_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1456 }
1457
1458 check_exec_crash(){
1459     log check_exec_crash "$@"
1460     code=$(cat)
1461
1462     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1463     # are safe but may not be available everywhere.  Thus we use
1464     # raise(SIGTERM) instead.  The check is run in a subshell so we
1465     # can redirect the "Terminated" message from the shell.  SIGBUS
1466     # is not defined by standard C so it is used conditionally.
1467
1468     (test_exec "$@") >> $logfile 2>&1 <<EOF
1469 #include <signal.h>
1470 static void sighandler(int sig){
1471     raise(SIGTERM);
1472 }
1473 int foo(void){
1474     $code
1475 }
1476 int (*func_ptr)(void) = foo;
1477 int main(void){
1478     signal(SIGILL, sighandler);
1479     signal(SIGFPE, sighandler);
1480     signal(SIGSEGV, sighandler);
1481 #ifdef SIGBUS
1482     signal(SIGBUS, sighandler);
1483 #endif
1484     return func_ptr();
1485 }
1486 EOF
1487 }
1488
1489 check_type(){
1490     log check_type "$@"
1491     headers=$1
1492     type=$2
1493     shift 2
1494     disable_sanitized "$type"
1495     test_code cc "$headers" "$type v" "$@" && enable_sanitized "$type"
1496 }
1497
1498 check_struct(){
1499     log check_struct "$@"
1500     headers=$1
1501     struct=$2
1502     member=$3
1503     shift 3
1504     disable_sanitized "${struct}_${member}"
1505     test_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1506         enable_sanitized "${struct}_${member}"
1507 }
1508
1509 check_builtin(){
1510     log check_builtin "$@"
1511     name=$1
1512     headers=$2
1513     builtin=$3
1514     shift 3
1515     disable "$name"
1516     test_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1517 }
1518
1519 check_compile_assert(){
1520     log check_compile_assert "$@"
1521     name=$1
1522     headers=$2
1523     condition=$3
1524     shift 3
1525     disable "$name"
1526     test_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1527 }
1528
1529 check_cc(){
1530     log check_cc "$@"
1531     name=$1
1532     shift
1533     disable "$name"
1534     test_code cc "$@" && enable "$name"
1535 }
1536
1537 require(){
1538     log require "$@"
1539     name_version="$1"
1540     name="${1%% *}"
1541     shift
1542     check_lib $name "$@" || die "ERROR: $name_version not found"
1543 }
1544
1545 require_cc(){
1546     log require_cc "$@"
1547     name="$1"
1548     check_cc "$@" || die "ERROR: $name failed"
1549 }
1550
1551 require_cpp(){
1552     name="$1"
1553     headers="$2"
1554     classes="$3"
1555     shift 3
1556     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1557 }
1558
1559 require_headers(){
1560     log require_headers "$@"
1561     headers="$1"
1562     check_headers "$@" || die "ERROR: $headers not found"
1563 }
1564
1565 require_cpp_condition(){
1566     log require_cpp_condition "$@"
1567     condition="$3"
1568     check_cpp_condition "$@" || die "ERROR: $condition not satisfied"
1569 }
1570
1571 require_pkg_config(){
1572     log require_pkg_config "$@"
1573     pkg_version="$2"
1574     check_pkg_config "$@" || die "ERROR: $pkg_version not found using pkg-config$pkg_config_fail_message"
1575 }
1576
1577 test_host_cc(){
1578     log test_host_cc "$@"
1579     cat > $TMPC
1580     log_file $TMPC
1581     test_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1582 }
1583
1584 test_host_cpp(){
1585     log test_host_cpp "$@"
1586     cat > $TMPC
1587     log_file $TMPC
1588     test_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1589 }
1590
1591 check_host_cppflags(){
1592     log check_host_cppflags "$@"
1593     test_host_cpp "$@" <<EOF && append host_cppflags "$@"
1594 #include <stdlib.h>
1595 EOF
1596 }
1597
1598 check_host_cflags(){
1599     log check_host_cflags "$@"
1600     set -- $($host_cflags_filter "$@")
1601     test_host_cc "$@" <<EOF && append host_cflags "$@"
1602 int x;
1603 EOF
1604 }
1605
1606 test_host_cpp_condition(){
1607     log test_host_cpp_condition "$@"
1608     header=$1
1609     condition=$2
1610     shift 2
1611     test_host_cpp "$@" <<EOF
1612 #include <$header>
1613 #if !($condition)
1614 #error "unsatisfied condition: $condition"
1615 #endif
1616 EOF
1617 }
1618
1619 check_host_cpp_condition(){
1620     log check_host_cpp_condition "$@"
1621     name=$1
1622     shift 1
1623     disable $name
1624     test_host_cpp_condition "$@" && enable $name
1625 }
1626
1627 cp_if_changed(){
1628     cmp -s "$1" "$2" && { test "$quiet" != "yes" && echo "$2 is unchanged"; } && return
1629     mkdir -p "$(dirname $2)"
1630     cp -f "$1" "$2"
1631 }
1632
1633 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1634 # system-dependent things.
1635
1636 AVCODEC_COMPONENTS="
1637     bsfs
1638     decoders
1639     encoders
1640     hwaccels
1641     parsers
1642 "
1643
1644 AVDEVICE_COMPONENTS="
1645     indevs
1646     outdevs
1647 "
1648
1649 AVFILTER_COMPONENTS="
1650     filters
1651 "
1652
1653 AVFORMAT_COMPONENTS="
1654     demuxers
1655     muxers
1656     protocols
1657 "
1658
1659 COMPONENT_LIST="
1660     $AVCODEC_COMPONENTS
1661     $AVDEVICE_COMPONENTS
1662     $AVFILTER_COMPONENTS
1663     $AVFORMAT_COMPONENTS
1664 "
1665
1666 EXAMPLE_LIST="
1667     avio_dir_cmd_example
1668     avio_reading_example
1669     decode_audio_example
1670     decode_video_example
1671     demuxing_decoding_example
1672     encode_audio_example
1673     encode_video_example
1674     extract_mvs_example
1675     filter_audio_example
1676     filtering_audio_example
1677     filtering_video_example
1678     http_multiclient_example
1679     hw_decode_example
1680     metadata_example
1681     muxing_example
1682     qsvdec_example
1683     remuxing_example
1684     resampling_audio_example
1685     scaling_video_example
1686     transcode_aac_example
1687     transcoding_example
1688     vaapi_encode_example
1689     vaapi_transcode_example
1690 "
1691
1692 EXTERNAL_AUTODETECT_LIBRARY_LIST="
1693     alsa
1694     appkit
1695     avfoundation
1696     bzlib
1697     coreimage
1698     iconv
1699     libxcb
1700     libxcb_shm
1701     libxcb_shape
1702     libxcb_xfixes
1703     lzma
1704     schannel
1705     sdl2
1706     securetransport
1707     sndio
1708     xlib
1709     zlib
1710 "
1711
1712 EXTERNAL_LIBRARY_GPL_LIST="
1713     avisynth
1714     frei0r
1715     libcdio
1716     libdavs2
1717     librubberband
1718     libvidstab
1719     libx264
1720     libx265
1721     libxavs
1722     libxavs2
1723     libxvid
1724 "
1725
1726 EXTERNAL_LIBRARY_NONFREE_LIST="
1727     decklink
1728     libfdk_aac
1729     openssl
1730     libtls
1731 "
1732
1733 EXTERNAL_LIBRARY_VERSION3_LIST="
1734     gmp
1735     libaribb24
1736     liblensfun
1737     libopencore_amrnb
1738     libopencore_amrwb
1739     libvmaf
1740     libvo_amrwbenc
1741     mbedtls
1742     rkmpp
1743 "
1744
1745 EXTERNAL_LIBRARY_GPLV3_LIST="
1746     libsmbclient
1747 "
1748
1749 EXTERNAL_LIBRARY_LIST="
1750     $EXTERNAL_LIBRARY_GPL_LIST
1751     $EXTERNAL_LIBRARY_NONFREE_LIST
1752     $EXTERNAL_LIBRARY_VERSION3_LIST
1753     $EXTERNAL_LIBRARY_GPLV3_LIST
1754     chromaprint
1755     gcrypt
1756     gnutls
1757     jni
1758     ladspa
1759     libaom
1760     libass
1761     libbluray
1762     libbs2b
1763     libcaca
1764     libcelt
1765     libcodec2
1766     libdav1d
1767     libdc1394
1768     libdrm
1769     libflite
1770     libfontconfig
1771     libfreetype
1772     libfribidi
1773     libgme
1774     libgsm
1775     libiec61883
1776     libilbc
1777     libjack
1778     libklvanc
1779     libkvazaar
1780     libmodplug
1781     libmp3lame
1782     libmysofa
1783     libopencv
1784     libopenh264
1785     libopenjpeg
1786     libopenmpt
1787     libopus
1788     libpulse
1789     librav1e
1790     librsvg
1791     librtmp
1792     libshine
1793     libsmbclient
1794     libsnappy
1795     libsoxr
1796     libspeex
1797     libsrt
1798     libssh
1799     libtensorflow
1800     libtesseract
1801     libtheora
1802     libtwolame
1803     libv4l2
1804     libvorbis
1805     libvpx
1806     libwavpack
1807     libwebp
1808     libxml2
1809     libzimg
1810     libzmq
1811     libzvbi
1812     lv2
1813     mediacodec
1814     openal
1815     opengl
1816     pocketsphinx
1817     vapoursynth
1818 "
1819
1820 HWACCEL_AUTODETECT_LIBRARY_LIST="
1821     amf
1822     audiotoolbox
1823     crystalhd
1824     cuda
1825     cuda_llvm
1826     cuvid
1827     d3d11va
1828     dxva2
1829     ffnvcodec
1830     nvdec
1831     nvenc
1832     vaapi
1833     vdpau
1834     videotoolbox
1835     v4l2_m2m
1836     xvmc
1837 "
1838
1839 # catchall list of things that require external libs to link
1840 EXTRALIBS_LIST="
1841     cpu_init
1842     cws2fws
1843 "
1844
1845 HWACCEL_LIBRARY_NONFREE_LIST="
1846     cuda_nvcc
1847     cuda_sdk
1848     libnpp
1849 "
1850
1851 HWACCEL_LIBRARY_LIST="
1852     $HWACCEL_LIBRARY_NONFREE_LIST
1853     libmfx
1854     mmal
1855     omx
1856     opencl
1857 "
1858
1859 DOCUMENT_LIST="
1860     doc
1861     htmlpages
1862     manpages
1863     podpages
1864     txtpages
1865 "
1866
1867 FEATURE_LIST="
1868     ftrapv
1869     gray
1870     hardcoded_tables
1871     omx_rpi
1872     runtime_cpudetect
1873     safe_bitstream_reader
1874     shared
1875     small
1876     static
1877     swscale_alpha
1878 "
1879
1880 # this list should be kept in linking order
1881 LIBRARY_LIST="
1882     avdevice
1883     avfilter
1884     swscale
1885     postproc
1886     avformat
1887     avcodec
1888     swresample
1889     avresample
1890     avutil
1891 "
1892
1893 LICENSE_LIST="
1894     gpl
1895     nonfree
1896     version3
1897 "
1898
1899 PROGRAM_LIST="
1900     ffplay
1901     ffprobe
1902     ffmpeg
1903 "
1904
1905 SUBSYSTEM_LIST="
1906     dct
1907     dwt
1908     error_resilience
1909     faan
1910     fast_unaligned
1911     fft
1912     lsp
1913     lzo
1914     mdct
1915     pixelutils
1916     network
1917     rdft
1918 "
1919
1920 # COMPONENT_LIST needs to come last to ensure correct dependency checking
1921 CONFIG_LIST="
1922     $DOCUMENT_LIST
1923     $EXAMPLE_LIST
1924     $EXTERNAL_LIBRARY_LIST
1925     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1926     $HWACCEL_LIBRARY_LIST
1927     $HWACCEL_AUTODETECT_LIBRARY_LIST
1928     $FEATURE_LIST
1929     $LICENSE_LIST
1930     $LIBRARY_LIST
1931     $PROGRAM_LIST
1932     $SUBSYSTEM_LIST
1933     autodetect
1934     fontconfig
1935     large_tests
1936     linux_perf
1937     memory_poisoning
1938     neon_clobber_test
1939     ossfuzz
1940     pic
1941     thumb
1942     valgrind_backtrace
1943     xmm_clobber_test
1944     $COMPONENT_LIST
1945 "
1946
1947 THREADS_LIST="
1948     pthreads
1949     os2threads
1950     w32threads
1951 "
1952
1953 ATOMICS_LIST="
1954     atomics_gcc
1955     atomics_suncc
1956     atomics_win32
1957 "
1958
1959 AUTODETECT_LIBS="
1960     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1961     $HWACCEL_AUTODETECT_LIBRARY_LIST
1962     $THREADS_LIST
1963 "
1964
1965 ARCH_LIST="
1966     aarch64
1967     alpha
1968     arm
1969     avr32
1970     avr32_ap
1971     avr32_uc
1972     bfin
1973     ia64
1974     m68k
1975     mips
1976     mips64
1977     parisc
1978     ppc
1979     ppc64
1980     s390
1981     sh4
1982     sparc
1983     sparc64
1984     tilegx
1985     tilepro
1986     tomi
1987     x86
1988     x86_32
1989     x86_64
1990 "
1991
1992 ARCH_EXT_LIST_ARM="
1993     armv5te
1994     armv6
1995     armv6t2
1996     armv8
1997     neon
1998     vfp
1999     vfpv3
2000     setend
2001 "
2002
2003 ARCH_EXT_LIST_MIPS="
2004     mipsfpu
2005     mips32r2
2006     mips32r5
2007     mips64r2
2008     mips32r6
2009     mips64r6
2010     mipsdsp
2011     mipsdspr2
2012     msa
2013     msa2
2014 "
2015
2016 ARCH_EXT_LIST_LOONGSON="
2017     loongson2
2018     loongson3
2019     mmi
2020 "
2021
2022 ARCH_EXT_LIST_X86_SIMD="
2023     aesni
2024     amd3dnow
2025     amd3dnowext
2026     avx
2027     avx2
2028     avx512
2029     fma3
2030     fma4
2031     mmx
2032     mmxext
2033     sse
2034     sse2
2035     sse3
2036     sse4
2037     sse42
2038     ssse3
2039     xop
2040 "
2041
2042 ARCH_EXT_LIST_PPC="
2043     altivec
2044     dcbzl
2045     ldbrx
2046     power8
2047     ppc4xx
2048     vsx
2049 "
2050
2051 ARCH_EXT_LIST_X86="
2052     $ARCH_EXT_LIST_X86_SIMD
2053     cpunop
2054     i686
2055 "
2056
2057 ARCH_EXT_LIST="
2058     $ARCH_EXT_LIST_ARM
2059     $ARCH_EXT_LIST_PPC
2060     $ARCH_EXT_LIST_X86
2061     $ARCH_EXT_LIST_MIPS
2062     $ARCH_EXT_LIST_LOONGSON
2063 "
2064
2065 ARCH_FEATURES="
2066     aligned_stack
2067     fast_64bit
2068     fast_clz
2069     fast_cmov
2070     local_aligned
2071     simd_align_16
2072     simd_align_32
2073     simd_align_64
2074 "
2075
2076 BUILTIN_LIST="
2077     atomic_cas_ptr
2078     machine_rw_barrier
2079     MemoryBarrier
2080     mm_empty
2081     rdtsc
2082     sem_timedwait
2083     sync_val_compare_and_swap
2084 "
2085 HAVE_LIST_CMDLINE="
2086     inline_asm
2087     symver
2088     x86asm
2089 "
2090
2091 HAVE_LIST_PUB="
2092     bigendian
2093     fast_unaligned
2094 "
2095
2096 HEADERS_LIST="
2097     arpa_inet_h
2098     asm_types_h
2099     cdio_paranoia_h
2100     cdio_paranoia_paranoia_h
2101     cuda_h
2102     dispatch_dispatch_h
2103     dev_bktr_ioctl_bt848_h
2104     dev_bktr_ioctl_meteor_h
2105     dev_ic_bt8xx_h
2106     dev_video_bktr_ioctl_bt848_h
2107     dev_video_meteor_ioctl_meteor_h
2108     direct_h
2109     dirent_h
2110     dxgidebug_h
2111     dxva_h
2112     ES2_gl_h
2113     gsm_h
2114     io_h
2115     linux_perf_event_h
2116     machine_ioctl_bt848_h
2117     machine_ioctl_meteor_h
2118     malloc_h
2119     opencv2_core_core_c_h
2120     OpenGL_gl3_h
2121     poll_h
2122     sys_param_h
2123     sys_resource_h
2124     sys_select_h
2125     sys_soundcard_h
2126     sys_time_h
2127     sys_un_h
2128     sys_videoio_h
2129     termios_h
2130     udplite_h
2131     unistd_h
2132     valgrind_valgrind_h
2133     windows_h
2134     winsock2_h
2135 "
2136
2137 INTRINSICS_LIST="
2138     intrinsics_neon
2139 "
2140
2141 COMPLEX_FUNCS="
2142     cabs
2143     cexp
2144 "
2145
2146 MATH_FUNCS="
2147     atanf
2148     atan2f
2149     cbrt
2150     cbrtf
2151     copysign
2152     cosf
2153     erf
2154     exp2
2155     exp2f
2156     expf
2157     hypot
2158     isfinite
2159     isinf
2160     isnan
2161     ldexpf
2162     llrint
2163     llrintf
2164     log2
2165     log2f
2166     log10f
2167     lrint
2168     lrintf
2169     powf
2170     rint
2171     round
2172     roundf
2173     sinf
2174     trunc
2175     truncf
2176 "
2177
2178 SYSTEM_FEATURES="
2179     dos_paths
2180     libc_msvcrt
2181     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
2182     section_data_rel_ro
2183     threads
2184     uwp
2185     winrt
2186 "
2187
2188 SYSTEM_FUNCS="
2189     access
2190     aligned_malloc
2191     arc4random
2192     clock_gettime
2193     closesocket
2194     CommandLineToArgvW
2195     fcntl
2196     getaddrinfo
2197     gethrtime
2198     getopt
2199     GetModuleHandle
2200     GetProcessAffinityMask
2201     GetProcessMemoryInfo
2202     GetProcessTimes
2203     getrusage
2204     GetStdHandle
2205     GetSystemTimeAsFileTime
2206     gettimeofday
2207     glob
2208     glXGetProcAddress
2209     gmtime_r
2210     inet_aton
2211     isatty
2212     kbhit
2213     localtime_r
2214     lstat
2215     lzo1x_999_compress
2216     mach_absolute_time
2217     MapViewOfFile
2218     memalign
2219     mkstemp
2220     mmap
2221     mprotect
2222     nanosleep
2223     PeekNamedPipe
2224     posix_memalign
2225     pthread_cancel
2226     sched_getaffinity
2227     SecItemImport
2228     SetConsoleTextAttribute
2229     SetConsoleCtrlHandler
2230     SetDllDirectory
2231     setmode
2232     setrlimit
2233     Sleep
2234     strerror_r
2235     sysconf
2236     sysctl
2237     usleep
2238     UTGetOSTypeFromString
2239     VirtualAlloc
2240     wglGetProcAddress
2241 "
2242
2243 SYSTEM_LIBRARIES="
2244     bcrypt
2245     vaapi_drm
2246     vaapi_x11
2247     vdpau_x11
2248 "
2249
2250 TOOLCHAIN_FEATURES="
2251     as_arch_directive
2252     as_dn_directive
2253     as_fpu_directive
2254     as_func
2255     as_object_arch
2256     asm_mod_q
2257     blocks_extension
2258     ebp_available
2259     ebx_available
2260     gnu_as
2261     gnu_windres
2262     ibm_asm
2263     inline_asm_direct_symbol_refs
2264     inline_asm_labels
2265     inline_asm_nonlocal_labels
2266     pragma_deprecated
2267     rsync_contimeout
2268     symver_asm_label
2269     symver_gnu_asm
2270     vfp_args
2271     xform_asm
2272     xmm_clobbers
2273 "
2274
2275 TYPES_LIST="
2276     kCMVideoCodecType_HEVC
2277     kCVPixelFormatType_420YpCbCr10BiPlanarVideoRange
2278     kCVImageBufferTransferFunction_SMPTE_ST_2084_PQ
2279     kCVImageBufferTransferFunction_ITU_R_2100_HLG
2280     kCVImageBufferTransferFunction_Linear
2281     socklen_t
2282     struct_addrinfo
2283     struct_group_source_req
2284     struct_ip_mreq_source
2285     struct_ipv6_mreq
2286     struct_msghdr_msg_flags
2287     struct_pollfd
2288     struct_rusage_ru_maxrss
2289     struct_sctp_event_subscribe
2290     struct_sockaddr_in6
2291     struct_sockaddr_sa_len
2292     struct_sockaddr_storage
2293     struct_stat_st_mtim_tv_nsec
2294     struct_v4l2_frmivalenum_discrete
2295 "
2296
2297 HAVE_LIST="
2298     $ARCH_EXT_LIST
2299     $(add_suffix _external $ARCH_EXT_LIST)
2300     $(add_suffix _inline   $ARCH_EXT_LIST)
2301     $ARCH_FEATURES
2302     $BUILTIN_LIST
2303     $COMPLEX_FUNCS
2304     $HAVE_LIST_CMDLINE
2305     $HAVE_LIST_PUB
2306     $HEADERS_LIST
2307     $INTRINSICS_LIST
2308     $MATH_FUNCS
2309     $SYSTEM_FEATURES
2310     $SYSTEM_FUNCS
2311     $SYSTEM_LIBRARIES
2312     $THREADS_LIST
2313     $TOOLCHAIN_FEATURES
2314     $TYPES_LIST
2315     makeinfo
2316     makeinfo_html
2317     opencl_d3d11
2318     opencl_drm_arm
2319     opencl_drm_beignet
2320     opencl_dxva2
2321     opencl_vaapi_beignet
2322     opencl_vaapi_intel_media
2323     perl
2324     pod2man
2325     texi2html
2326 "
2327
2328 # options emitted with CONFIG_ prefix but not available on the command line
2329 CONFIG_EXTRA="
2330     aandcttables
2331     ac3dsp
2332     adts_header
2333     audio_frame_queue
2334     audiodsp
2335     blockdsp
2336     bswapdsp
2337     cabac
2338     cbs
2339     cbs_av1
2340     cbs_h264
2341     cbs_h265
2342     cbs_jpeg
2343     cbs_mpeg2
2344     cbs_vp9
2345     dirac_parse
2346     dnn
2347     dvprofile
2348     exif
2349     faandct
2350     faanidct
2351     fdctdsp
2352     flacdsp
2353     fmtconvert
2354     frame_thread_encoder
2355     g722dsp
2356     golomb
2357     gplv3
2358     h263dsp
2359     h264chroma
2360     h264dsp
2361     h264parse
2362     h264pred
2363     h264qpel
2364     hevcparse
2365     hpeldsp
2366     huffman
2367     huffyuvdsp
2368     huffyuvencdsp
2369     idctdsp
2370     iirfilter
2371     mdct15
2372     intrax8
2373     iso_media
2374     ividsp
2375     jpegtables
2376     lgplv3
2377     libx262
2378     llauddsp
2379     llviddsp
2380     llvidencdsp
2381     lpc
2382     lzf
2383     me_cmp
2384     mpeg_er
2385     mpegaudio
2386     mpegaudiodsp
2387     mpegaudioheader
2388     mpegvideo
2389     mpegvideoenc
2390     mss34dsp
2391     pixblockdsp
2392     qpeldsp
2393     qsv
2394     qsvdec
2395     qsvenc
2396     qsvvpp
2397     rangecoder
2398     riffdec
2399     riffenc
2400     rtpdec
2401     rtpenc_chain
2402     rv34dsp
2403     scene_sad
2404     sinewin
2405     snappy
2406     srtp
2407     startcode
2408     texturedsp
2409     texturedspenc
2410     tpeldsp
2411     vaapi_1
2412     vaapi_encode
2413     vc1dsp
2414     videodsp
2415     vp3dsp
2416     vp56dsp
2417     vp8dsp
2418     wma_freqs
2419     wmv2dsp
2420 "
2421
2422 CMDLINE_SELECT="
2423     $ARCH_EXT_LIST
2424     $CONFIG_LIST
2425     $HAVE_LIST_CMDLINE
2426     $THREADS_LIST
2427     asm
2428     cross_compile
2429     debug
2430     extra_warnings
2431     logging
2432     lto
2433     optimizations
2434     rpath
2435     stripping
2436 "
2437
2438 PATHS_LIST="
2439     bindir
2440     datadir
2441     docdir
2442     incdir
2443     libdir
2444     mandir
2445     pkgconfigdir
2446     prefix
2447     shlibdir
2448     install_name_dir
2449 "
2450
2451 CMDLINE_SET="
2452     $PATHS_LIST
2453     ar
2454     arch
2455     as
2456     assert_level
2457     build_suffix
2458     cc
2459     objcc
2460     cpu
2461     cross_prefix
2462     custom_allocator
2463     cxx
2464     dep_cc
2465     doxygen
2466     env
2467     extra_version
2468     gas
2469     host_cc
2470     host_cflags
2471     host_extralibs
2472     host_ld
2473     host_ldflags
2474     host_os
2475     ignore_tests
2476     install
2477     ld
2478     ln_s
2479     logfile
2480     malloc_prefix
2481     nm
2482     optflags
2483     nvcc
2484     nvccflags
2485     pkg_config
2486     pkg_config_flags
2487     progs_suffix
2488     random_seed
2489     ranlib
2490     samples
2491     strip
2492     sws_max_filter_size
2493     sysinclude
2494     sysroot
2495     target_exec
2496     target_os
2497     target_path
2498     target_samples
2499     tempprefix
2500     toolchain
2501     valgrind
2502     windres
2503     x86asmexe
2504 "
2505
2506 CMDLINE_APPEND="
2507     extra_cflags
2508     extra_cxxflags
2509     extra_objcflags
2510     host_cppflags
2511 "
2512
2513 # code dependency declarations
2514
2515 # architecture extensions
2516
2517 armv5te_deps="arm"
2518 armv6_deps="arm"
2519 armv6t2_deps="arm"
2520 armv8_deps="aarch64"
2521 neon_deps_any="aarch64 arm"
2522 intrinsics_neon_deps="neon"
2523 vfp_deps_any="aarch64 arm"
2524 vfpv3_deps="vfp"
2525 setend_deps="arm"
2526
2527 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2528
2529 altivec_deps="ppc"
2530 dcbzl_deps="ppc"
2531 ldbrx_deps="ppc"
2532 ppc4xx_deps="ppc"
2533 vsx_deps="altivec"
2534 power8_deps="vsx"
2535
2536 loongson2_deps="mips"
2537 loongson3_deps="mips"
2538 mips32r2_deps="mips"
2539 mips32r5_deps="mips"
2540 mips32r6_deps="mips"
2541 mips64r2_deps="mips"
2542 mips64r6_deps="mips"
2543 mipsfpu_deps="mips"
2544 mipsdsp_deps="mips"
2545 mipsdspr2_deps="mips"
2546 mmi_deps="mips"
2547 msa_deps="mipsfpu"
2548 msa2_deps="msa"
2549
2550 cpunop_deps="i686"
2551 x86_64_select="i686"
2552 x86_64_suggest="fast_cmov"
2553
2554 amd3dnow_deps="mmx"
2555 amd3dnowext_deps="amd3dnow"
2556 i686_deps="x86"
2557 mmx_deps="x86"
2558 mmxext_deps="mmx"
2559 sse_deps="mmxext"
2560 sse2_deps="sse"
2561 sse3_deps="sse2"
2562 ssse3_deps="sse3"
2563 sse4_deps="ssse3"
2564 sse42_deps="sse4"
2565 aesni_deps="sse42"
2566 avx_deps="sse42"
2567 xop_deps="avx"
2568 fma3_deps="avx"
2569 fma4_deps="avx"
2570 avx2_deps="avx"
2571 avx512_deps="avx2"
2572
2573 mmx_external_deps="x86asm"
2574 mmx_inline_deps="inline_asm x86"
2575 mmx_suggest="mmx_external mmx_inline"
2576
2577 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2578     eval dep=\$${ext}_deps
2579     eval ${ext}_external_deps='"${dep}_external"'
2580     eval ${ext}_inline_deps='"${dep}_inline"'
2581     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2582 done
2583
2584 aligned_stack_if_any="aarch64 ppc x86"
2585 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2586 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2587 fast_unaligned_if_any="aarch64 ppc x86"
2588 simd_align_16_if_any="altivec neon sse"
2589 simd_align_32_if_any="avx"
2590 simd_align_64_if_any="avx512"
2591
2592 # system capabilities
2593 linux_perf_deps="linux_perf_event_h"
2594 symver_if_any="symver_asm_label symver_gnu_asm"
2595 valgrind_backtrace_conflict="optimizations"
2596 valgrind_backtrace_deps="valgrind_valgrind_h"
2597
2598 # threading support
2599 atomics_gcc_if="sync_val_compare_and_swap"
2600 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2601 atomics_win32_if="MemoryBarrier"
2602 atomics_native_if_any="$ATOMICS_LIST"
2603 w32threads_deps="atomics_native"
2604 threads_if_any="$THREADS_LIST"
2605
2606 # subsystems
2607 cbs_av1_select="cbs"
2608 cbs_h264_select="cbs"
2609 cbs_h265_select="cbs"
2610 cbs_jpeg_select="cbs"
2611 cbs_mpeg2_select="cbs"
2612 cbs_vp9_select="cbs"
2613 dct_select="rdft"
2614 dirac_parse_select="golomb"
2615 dnn_suggest="libtensorflow"
2616 error_resilience_select="me_cmp"
2617 faandct_deps="faan"
2618 faandct_select="fdctdsp"
2619 faanidct_deps="faan"
2620 faanidct_select="idctdsp"
2621 h264dsp_select="startcode"
2622 hevcparse_select="golomb"
2623 frame_thread_encoder_deps="encoders threads"
2624 intrax8_select="blockdsp idctdsp"
2625 mdct_select="fft"
2626 mdct15_select="fft"
2627 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2628 mpeg_er_select="error_resilience"
2629 mpegaudio_select="mpegaudiodsp mpegaudioheader"
2630 mpegaudiodsp_select="dct"
2631 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2632 mpegvideoenc_select="aandcttables me_cmp mpegvideo pixblockdsp qpeldsp"
2633 vc1dsp_select="h264chroma qpeldsp startcode"
2634 rdft_select="fft"
2635
2636 # decoders / encoders
2637 aac_decoder_select="adts_header mdct15 mdct sinewin"
2638 aac_fixed_decoder_select="adts_header mdct sinewin"
2639 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2640 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2641 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2642 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2643 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2644 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2645 acelp_kelvin_decoder_select="audiodsp"
2646 adpcm_g722_decoder_select="g722dsp"
2647 adpcm_g722_encoder_select="g722dsp"
2648 aic_decoder_select="golomb idctdsp"
2649 alac_encoder_select="lpc"
2650 als_decoder_select="bswapdsp"
2651 amrnb_decoder_select="lsp"
2652 amrwb_decoder_select="lsp"
2653 amv_decoder_select="sp5x_decoder exif"
2654 amv_encoder_select="jpegtables mpegvideoenc"
2655 ape_decoder_select="bswapdsp llauddsp"
2656 apng_decoder_deps="zlib"
2657 apng_encoder_deps="zlib"
2658 apng_encoder_select="llvidencdsp"
2659 aptx_decoder_select="audio_frame_queue"
2660 aptx_encoder_select="audio_frame_queue"
2661 aptx_hd_decoder_select="audio_frame_queue"
2662 aptx_hd_encoder_select="audio_frame_queue"
2663 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2664 asv1_encoder_select="aandcttables bswapdsp fdctdsp pixblockdsp"
2665 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2666 asv2_encoder_select="aandcttables bswapdsp fdctdsp pixblockdsp"
2667 atrac1_decoder_select="mdct sinewin"
2668 atrac3_decoder_select="mdct"
2669 atrac3al_decoder_select="mdct"
2670 atrac3p_decoder_select="mdct sinewin"
2671 atrac3pal_decoder_select="mdct sinewin"
2672 atrac9_decoder_select="mdct"
2673 avrn_decoder_select="exif jpegtables"
2674 bink_decoder_select="blockdsp hpeldsp"
2675 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2676 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2677 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2678 clearvideo_decoder_select="idctdsp"
2679 cllc_decoder_select="bswapdsp"
2680 comfortnoise_encoder_select="lpc"
2681 cook_decoder_select="audiodsp mdct sinewin"
2682 cscd_decoder_select="lzo"
2683 cscd_decoder_suggest="zlib"
2684 dca_decoder_select="mdct"
2685 dca_encoder_select="mdct"
2686 dds_decoder_select="texturedsp"
2687 dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
2688 dnxhd_decoder_select="blockdsp idctdsp"
2689 dnxhd_encoder_select="blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2690 dolby_e_decoder_select="mdct"
2691 dvvideo_decoder_select="dvprofile idctdsp"
2692 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2693 dxa_decoder_deps="zlib"
2694 dxv_decoder_select="lzf texturedsp"
2695 eac3_decoder_select="ac3_decoder"
2696 eac3_encoder_select="ac3_encoder"
2697 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2698 eatgq_decoder_select="aandcttables"
2699 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2700 exr_decoder_deps="zlib"
2701 ffv1_decoder_select="rangecoder"
2702 ffv1_encoder_select="rangecoder"
2703 ffvhuff_decoder_select="huffyuv_decoder"
2704 ffvhuff_encoder_select="huffyuv_encoder"
2705 fic_decoder_select="golomb"
2706 flac_decoder_select="flacdsp"
2707 flac_encoder_select="bswapdsp flacdsp lpc"
2708 flashsv2_decoder_deps="zlib"
2709 flashsv2_encoder_deps="zlib"
2710 flashsv_decoder_deps="zlib"
2711 flashsv_encoder_deps="zlib"
2712 flv_decoder_select="h263_decoder"
2713 flv_encoder_select="h263_encoder"
2714 fourxm_decoder_select="blockdsp bswapdsp"
2715 fraps_decoder_select="bswapdsp huffman"
2716 g2m_decoder_deps="zlib"
2717 g2m_decoder_select="blockdsp idctdsp jpegtables"
2718 g729_decoder_select="audiodsp"
2719 h261_decoder_select="mpegvideo"
2720 h261_encoder_select="mpegvideoenc"
2721 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2722 h263_encoder_select="h263dsp mpegvideoenc"
2723 h263i_decoder_select="h263_decoder"
2724 h263p_decoder_select="h263_decoder"
2725 h263p_encoder_select="h263_encoder"
2726 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
2727 h264_decoder_suggest="error_resilience"
2728 hap_decoder_select="snappy texturedsp"
2729 hap_encoder_deps="libsnappy"
2730 hap_encoder_select="texturedspenc"
2731 hevc_decoder_select="bswapdsp cabac golomb hevcparse videodsp"
2732 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2733 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llvidencdsp"
2734 hymt_decoder_select="huffyuv_decoder"
2735 iac_decoder_select="imc_decoder"
2736 imc_decoder_select="bswapdsp fft mdct sinewin"
2737 imm4_decoder_select="bswapdsp"
2738 imm5_decoder_select="h264_decoder hevc_decoder"
2739 indeo3_decoder_select="hpeldsp"
2740 indeo4_decoder_select="ividsp"
2741 indeo5_decoder_select="ividsp"
2742 interplay_video_decoder_select="hpeldsp"
2743 jpegls_decoder_select="mjpeg_decoder"
2744 jv_decoder_select="blockdsp"
2745 lagarith_decoder_select="llviddsp"
2746 ljpeg_encoder_select="idctdsp jpegtables mpegvideoenc"
2747 lscr_decoder_deps="zlib"
2748 magicyuv_decoder_select="llviddsp"
2749 magicyuv_encoder_select="llvidencdsp"
2750 mdec_decoder_select="blockdsp bswapdsp idctdsp mpegvideo"
2751 metasound_decoder_select="lsp mdct sinewin"
2752 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2753 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2754 mjpeg_encoder_select="jpegtables mpegvideoenc"
2755 mjpegb_decoder_select="mjpeg_decoder"
2756 mlp_decoder_select="mlp_parser"
2757 mlp_encoder_select="lpc audio_frame_queue"
2758 motionpixels_decoder_select="bswapdsp"
2759 mp1_decoder_select="mpegaudio"
2760 mp1float_decoder_select="mpegaudio"
2761 mp2_decoder_select="mpegaudio"
2762 mp2float_decoder_select="mpegaudio"
2763 mp3_decoder_select="mpegaudio"
2764 mp3adu_decoder_select="mpegaudio"
2765 mp3adufloat_decoder_select="mpegaudio"
2766 mp3float_decoder_select="mpegaudio"
2767 mp3on4_decoder_select="mpegaudio"
2768 mp3on4float_decoder_select="mpegaudio"
2769 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2770 mpc8_decoder_select="mpegaudiodsp"
2771 mpegvideo_decoder_select="mpegvideo"
2772 mpeg1video_decoder_select="mpegvideo"
2773 mpeg1video_encoder_select="mpegvideoenc h263dsp"
2774 mpeg2video_decoder_select="mpegvideo"
2775 mpeg2video_encoder_select="mpegvideoenc h263dsp"
2776 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2777 mpeg4_encoder_select="h263_encoder"
2778 msa1_decoder_select="mss34dsp"
2779 mscc_decoder_deps="zlib"
2780 msmpeg4v1_decoder_select="h263_decoder"
2781 msmpeg4v2_decoder_select="h263_decoder"
2782 msmpeg4v2_encoder_select="h263_encoder"
2783 msmpeg4v3_decoder_select="h263_decoder"
2784 msmpeg4v3_encoder_select="h263_encoder"
2785 mss2_decoder_select="mpegvideo qpeldsp vc1_decoder"
2786 mts2_decoder_select="mss34dsp"
2787 mvha_decoder_deps="zlib"
2788 mwsc_decoder_deps="zlib"
2789 mxpeg_decoder_select="mjpeg_decoder"
2790 nellymoser_decoder_select="mdct sinewin"
2791 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2792 nuv_decoder_select="idctdsp lzo"
2793 on2avc_decoder_select="mdct"
2794 opus_decoder_deps="swresample"
2795 opus_decoder_select="mdct15"
2796 opus_encoder_select="audio_frame_queue mdct15"
2797 png_decoder_deps="zlib"
2798 png_encoder_deps="zlib"
2799 png_encoder_select="llvidencdsp"
2800 prores_decoder_select="blockdsp idctdsp"
2801 prores_encoder_select="fdctdsp"
2802 qcelp_decoder_select="lsp"
2803 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2804 ra_144_decoder_select="audiodsp"
2805 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2806 ralf_decoder_select="golomb"
2807 rasc_decoder_deps="zlib"
2808 rawvideo_decoder_select="bswapdsp"
2809 rscc_decoder_deps="zlib"
2810 rtjpeg_decoder_select="me_cmp"
2811 rv10_decoder_select="h263_decoder"
2812 rv10_encoder_select="h263_encoder"
2813 rv20_decoder_select="h263_decoder"
2814 rv20_encoder_select="h263_encoder"
2815 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2816 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2817 screenpresso_decoder_deps="zlib"
2818 shorten_decoder_select="bswapdsp"
2819 sipr_decoder_select="lsp"
2820 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2821 snow_encoder_select="dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2822 sonic_decoder_select="golomb rangecoder"
2823 sonic_encoder_select="golomb rangecoder"
2824 sonic_ls_encoder_select="golomb rangecoder"
2825 sp5x_decoder_select="mjpeg_decoder"
2826 speedhq_decoder_select="mpegvideo"
2827 srgc_decoder_deps="zlib"
2828 svq1_decoder_select="hpeldsp"
2829 svq1_encoder_select="hpeldsp me_cmp mpegvideoenc"
2830 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2831 svq3_decoder_suggest="zlib"
2832 tak_decoder_select="audiodsp"
2833 tdsc_decoder_deps="zlib"
2834 tdsc_decoder_select="mjpeg_decoder"
2835 theora_decoder_select="vp3_decoder"
2836 thp_decoder_select="mjpeg_decoder"
2837 tiff_decoder_select="mjpeg_decoder"
2838 tiff_decoder_suggest="zlib lzma"
2839 tiff_encoder_suggest="zlib"
2840 truehd_decoder_select="mlp_parser"
2841 truehd_encoder_select="lpc audio_frame_queue"
2842 truemotion2_decoder_select="bswapdsp"
2843 truespeech_decoder_select="bswapdsp"
2844 tscc_decoder_deps="zlib"
2845 twinvq_decoder_select="mdct lsp sinewin"
2846 txd_decoder_select="texturedsp"
2847 utvideo_decoder_select="bswapdsp llviddsp"
2848 utvideo_encoder_select="bswapdsp huffman llvidencdsp"
2849 vble_decoder_select="llviddsp"
2850 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 mpegvideo vc1dsp"
2851 vc1image_decoder_select="vc1_decoder"
2852 vorbis_decoder_select="mdct"
2853 vorbis_encoder_select="audio_frame_queue mdct"
2854 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2855 vp4_decoder_select="vp3_decoder"
2856 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2857 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2858 vp6a_decoder_select="vp6_decoder"
2859 vp6f_decoder_select="vp6_decoder"
2860 vp7_decoder_select="h264pred videodsp vp8dsp"
2861 vp8_decoder_select="h264pred videodsp vp8dsp"
2862 vp9_decoder_select="videodsp vp9_parser vp9_superframe_split_bsf"
2863 wcmv_decoder_deps="zlib"
2864 webp_decoder_select="vp8_decoder exif"
2865 wmalossless_decoder_select="llauddsp"
2866 wmapro_decoder_select="mdct sinewin wma_freqs"
2867 wmav1_decoder_select="mdct sinewin wma_freqs"
2868 wmav1_encoder_select="mdct sinewin wma_freqs"
2869 wmav2_decoder_select="mdct sinewin wma_freqs"
2870 wmav2_encoder_select="mdct sinewin wma_freqs"
2871 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2872 wmv1_decoder_select="h263_decoder"
2873 wmv1_encoder_select="h263_encoder"
2874 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2875 wmv2_encoder_select="h263_encoder wmv2dsp"
2876 wmv3_decoder_select="vc1_decoder"
2877 wmv3image_decoder_select="wmv3_decoder"
2878 xma1_decoder_select="wmapro_decoder"
2879 xma2_decoder_select="wmapro_decoder"
2880 ylc_decoder_select="bswapdsp"
2881 zerocodec_decoder_deps="zlib"
2882 zlib_decoder_deps="zlib"
2883 zlib_encoder_deps="zlib"
2884 zmbv_decoder_deps="zlib"
2885 zmbv_encoder_deps="zlib"
2886
2887 # hardware accelerators
2888 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2889 cuda_deps="ffnvcodec"
2890 cuvid_deps="ffnvcodec"
2891 d3d11va_deps="dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2892 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode ole32 user32"
2893 ffnvcodec_deps_any="libdl LoadLibrary"
2894 nvdec_deps="ffnvcodec"
2895 vaapi_x11_deps="xlib"
2896 videotoolbox_hwaccel_deps="videotoolbox pthreads"
2897 videotoolbox_hwaccel_extralibs="-framework QuartzCore"
2898 xvmc_deps="X11_extensions_XvMClib_h"
2899
2900 h263_vaapi_hwaccel_deps="vaapi"
2901 h263_vaapi_hwaccel_select="h263_decoder"
2902 h263_videotoolbox_hwaccel_deps="videotoolbox"
2903 h263_videotoolbox_hwaccel_select="h263_decoder"
2904 h264_d3d11va_hwaccel_deps="d3d11va"
2905 h264_d3d11va_hwaccel_select="h264_decoder"
2906 h264_d3d11va2_hwaccel_deps="d3d11va"
2907 h264_d3d11va2_hwaccel_select="h264_decoder"
2908 h264_dxva2_hwaccel_deps="dxva2"
2909 h264_dxva2_hwaccel_select="h264_decoder"
2910 h264_nvdec_hwaccel_deps="nvdec"
2911 h264_nvdec_hwaccel_select="h264_decoder"
2912 h264_vaapi_hwaccel_deps="vaapi"
2913 h264_vaapi_hwaccel_select="h264_decoder"
2914 h264_vdpau_hwaccel_deps="vdpau"
2915 h264_vdpau_hwaccel_select="h264_decoder"
2916 h264_videotoolbox_hwaccel_deps="videotoolbox"
2917 h264_videotoolbox_hwaccel_select="h264_decoder"
2918 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2919 hevc_d3d11va_hwaccel_select="hevc_decoder"
2920 hevc_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2921 hevc_d3d11va2_hwaccel_select="hevc_decoder"
2922 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2923 hevc_dxva2_hwaccel_select="hevc_decoder"
2924 hevc_nvdec_hwaccel_deps="nvdec"
2925 hevc_nvdec_hwaccel_select="hevc_decoder"
2926 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2927 hevc_vaapi_hwaccel_select="hevc_decoder"
2928 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2929 hevc_vdpau_hwaccel_select="hevc_decoder"
2930 hevc_videotoolbox_hwaccel_deps="videotoolbox"
2931 hevc_videotoolbox_hwaccel_select="hevc_decoder"
2932 mjpeg_nvdec_hwaccel_deps="nvdec"
2933 mjpeg_nvdec_hwaccel_select="mjpeg_decoder"
2934 mjpeg_vaapi_hwaccel_deps="vaapi"
2935 mjpeg_vaapi_hwaccel_select="mjpeg_decoder"
2936 mpeg_xvmc_hwaccel_deps="xvmc"
2937 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2938 mpeg1_nvdec_hwaccel_deps="nvdec"
2939 mpeg1_nvdec_hwaccel_select="mpeg1video_decoder"
2940 mpeg1_vdpau_hwaccel_deps="vdpau"
2941 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2942 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2943 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2944 mpeg1_xvmc_hwaccel_deps="xvmc"
2945 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2946 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2947 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2948 mpeg2_d3d11va2_hwaccel_deps="d3d11va"
2949 mpeg2_d3d11va2_hwaccel_select="mpeg2video_decoder"
2950 mpeg2_dxva2_hwaccel_deps="dxva2"
2951 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2952 mpeg2_nvdec_hwaccel_deps="nvdec"
2953 mpeg2_nvdec_hwaccel_select="mpeg2video_decoder"
2954 mpeg2_vaapi_hwaccel_deps="vaapi"
2955 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2956 mpeg2_vdpau_hwaccel_deps="vdpau"
2957 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2958 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2959 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2960 mpeg2_xvmc_hwaccel_deps="xvmc"
2961 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2962 mpeg4_nvdec_hwaccel_deps="nvdec"
2963 mpeg4_nvdec_hwaccel_select="mpeg4_decoder"
2964 mpeg4_vaapi_hwaccel_deps="vaapi"
2965 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2966 mpeg4_vdpau_hwaccel_deps="vdpau"
2967 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2968 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2969 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2970 vc1_d3d11va_hwaccel_deps="d3d11va"
2971 vc1_d3d11va_hwaccel_select="vc1_decoder"
2972 vc1_d3d11va2_hwaccel_deps="d3d11va"
2973 vc1_d3d11va2_hwaccel_select="vc1_decoder"
2974 vc1_dxva2_hwaccel_deps="dxva2"
2975 vc1_dxva2_hwaccel_select="vc1_decoder"
2976 vc1_nvdec_hwaccel_deps="nvdec"
2977 vc1_nvdec_hwaccel_select="vc1_decoder"
2978 vc1_vaapi_hwaccel_deps="vaapi"
2979 vc1_vaapi_hwaccel_select="vc1_decoder"
2980 vc1_vdpau_hwaccel_deps="vdpau"
2981 vc1_vdpau_hwaccel_select="vc1_decoder"
2982 vp8_nvdec_hwaccel_deps="nvdec"
2983 vp8_nvdec_hwaccel_select="vp8_decoder"
2984 vp8_vaapi_hwaccel_deps="vaapi"
2985 vp8_vaapi_hwaccel_select="vp8_decoder"
2986 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2987 vp9_d3d11va_hwaccel_select="vp9_decoder"
2988 vp9_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2989 vp9_d3d11va2_hwaccel_select="vp9_decoder"
2990 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
2991 vp9_dxva2_hwaccel_select="vp9_decoder"
2992 vp9_nvdec_hwaccel_deps="nvdec"
2993 vp9_nvdec_hwaccel_select="vp9_decoder"
2994 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9_bit_depth"
2995 vp9_vaapi_hwaccel_select="vp9_decoder"
2996 vp9_vdpau_hwaccel_deps="vdpau VdpPictureInfoVP9"
2997 vp9_vdpau_hwaccel_select="vp9_decoder"
2998 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2999 wmv3_d3d11va2_hwaccel_select="vc1_d3d11va2_hwaccel"
3000 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
3001 wmv3_nvdec_hwaccel_select="vc1_nvdec_hwaccel"
3002 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
3003 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
3004
3005 # hardware-accelerated codecs
3006 omx_deps="libdl pthreads"
3007 omx_rpi_select="omx"
3008 qsv_deps="libmfx"
3009 qsvdec_select="qsv"
3010 qsvenc_select="qsv"
3011 qsvvpp_select="qsv"
3012 vaapi_encode_deps="vaapi"
3013 v4l2_m2m_deps="linux_videodev2_h sem_timedwait"
3014
3015 hwupload_cuda_filter_deps="ffnvcodec"
3016 scale_npp_filter_deps="ffnvcodec libnpp"
3017 scale_cuda_filter_deps="ffnvcodec"
3018 scale_cuda_filter_deps_any="cuda_nvcc cuda_llvm"
3019 thumbnail_cuda_filter_deps="ffnvcodec"
3020 thumbnail_cuda_filter_deps_any="cuda_nvcc cuda_llvm"
3021 transpose_npp_filter_deps="ffnvcodec libnpp"
3022
3023 amf_deps_any="libdl LoadLibrary"
3024 nvenc_deps="ffnvcodec"
3025 nvenc_deps_any="libdl LoadLibrary"
3026 nvenc_encoder_deps="nvenc"
3027
3028 h263_v4l2m2m_decoder_deps="v4l2_m2m h263_v4l2_m2m"
3029 h263_v4l2m2m_encoder_deps="v4l2_m2m h263_v4l2_m2m"
3030 h264_amf_encoder_deps="amf"
3031 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
3032 h264_cuvid_decoder_deps="cuvid"
3033 h264_cuvid_decoder_select="h264_mp4toannexb_bsf"
3034 h264_mediacodec_decoder_deps="mediacodec"
3035 h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
3036 h264_mmal_decoder_deps="mmal"
3037 h264_nvenc_encoder_deps="nvenc"
3038 h264_omx_encoder_deps="omx"
3039 h264_qsv_decoder_select="h264_mp4toannexb_bsf qsvdec"
3040 h264_qsv_encoder_select="qsvenc"
3041 h264_rkmpp_decoder_deps="rkmpp"
3042 h264_rkmpp_decoder_select="h264_mp4toannexb_bsf"
3043 h264_vaapi_encoder_select="cbs_h264 vaapi_encode"
3044 h264_v4l2m2m_decoder_deps="v4l2_m2m h264_v4l2_m2m"
3045 h264_v4l2m2m_decoder_select="h264_mp4toannexb_bsf"
3046 h264_v4l2m2m_encoder_deps="v4l2_m2m h264_v4l2_m2m"
3047 hevc_amf_encoder_deps="amf"
3048 hevc_cuvid_decoder_deps="cuvid"
3049 hevc_cuvid_decoder_select="hevc_mp4toannexb_bsf"
3050 hevc_mediacodec_decoder_deps="mediacodec"
3051 hevc_mediacodec_decoder_select="hevc_mp4toannexb_bsf hevc_parser"
3052 hevc_nvenc_encoder_deps="nvenc"
3053 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf qsvdec"
3054 hevc_qsv_encoder_select="hevcparse qsvenc"
3055 hevc_rkmpp_decoder_deps="rkmpp"
3056 hevc_rkmpp_decoder_select="hevc_mp4toannexb_bsf"
3057 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
3058 hevc_vaapi_encoder_select="cbs_h265 vaapi_encode"
3059 hevc_v4l2m2m_decoder_deps="v4l2_m2m hevc_v4l2_m2m"
3060 hevc_v4l2m2m_decoder_select="hevc_mp4toannexb_bsf"
3061 hevc_v4l2m2m_encoder_deps="v4l2_m2m hevc_v4l2_m2m"
3062 mjpeg_cuvid_decoder_deps="cuvid"
3063 mjpeg_qsv_decoder_select="qsvdec"
3064 mjpeg_qsv_encoder_deps="libmfx"
3065 mjpeg_qsv_encoder_select="qsvenc"
3066 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
3067 mjpeg_vaapi_encoder_select="cbs_jpeg jpegtables vaapi_encode"
3068 mpeg1_cuvid_decoder_deps="cuvid"
3069 mpeg1_v4l2m2m_decoder_deps="v4l2_m2m mpeg1_v4l2_m2m"
3070 mpeg2_crystalhd_decoder_select="crystalhd"
3071 mpeg2_cuvid_decoder_deps="cuvid"
3072 mpeg2_mmal_decoder_deps="mmal"
3073 mpeg2_mediacodec_decoder_deps="mediacodec"
3074 mpeg2_qsv_decoder_select="qsvdec"
3075 mpeg2_qsv_encoder_select="qsvenc"
3076 mpeg2_vaapi_encoder_select="cbs_mpeg2 vaapi_encode"
3077 mpeg2_v4l2m2m_decoder_deps="v4l2_m2m mpeg2_v4l2_m2m"
3078 mpeg4_crystalhd_decoder_select="crystalhd"
3079 mpeg4_cuvid_decoder_deps="cuvid"
3080 mpeg4_mediacodec_decoder_deps="mediacodec"
3081 mpeg4_mmal_decoder_deps="mmal"
3082 mpeg4_omx_encoder_deps="omx"
3083 mpeg4_v4l2m2m_decoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
3084 mpeg4_v4l2m2m_encoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
3085 msmpeg4_crystalhd_decoder_select="crystalhd"
3086 nvenc_h264_encoder_select="h264_nvenc_encoder"
3087 nvenc_hevc_encoder_select="hevc_nvenc_encoder"
3088 vc1_crystalhd_decoder_select="crystalhd"
3089 vc1_cuvid_decoder_deps="cuvid"
3090 vc1_mmal_decoder_deps="mmal"
3091 vc1_qsv_decoder_select="qsvdec"
3092 vc1_v4l2m2m_decoder_deps="v4l2_m2m vc1_v4l2_m2m"
3093 vp8_cuvid_decoder_deps="cuvid"
3094 vp8_mediacodec_decoder_deps="mediacodec"
3095 vp8_qsv_decoder_select="qsvdec"
3096 vp8_rkmpp_decoder_deps="rkmpp"
3097 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
3098 vp8_vaapi_encoder_select="vaapi_encode"
3099 vp8_v4l2m2m_decoder_deps="v4l2_m2m vp8_v4l2_m2m"
3100 vp8_v4l2m2m_encoder_deps="v4l2_m2m vp8_v4l2_m2m"
3101 vp9_cuvid_decoder_deps="cuvid"
3102 vp9_mediacodec_decoder_deps="mediacodec"
3103 vp9_qsv_decoder_select="qsvdec"
3104 vp9_rkmpp_decoder_deps="rkmpp"
3105 vp9_vaapi_encoder_deps="VAEncPictureParameterBufferVP9"
3106 vp9_vaapi_encoder_select="vaapi_encode"
3107 vp9_qsv_encoder_deps="libmfx MFX_CODEC_VP9"
3108 vp9_qsv_encoder_select="qsvenc"
3109 vp9_v4l2m2m_decoder_deps="v4l2_m2m vp9_v4l2_m2m"
3110 wmv3_crystalhd_decoder_select="crystalhd"
3111
3112 # parsers
3113 aac_parser_select="adts_header"
3114 av1_parser_select="cbs_av1"
3115 h264_parser_select="golomb h264dsp h264parse"
3116 hevc_parser_select="hevcparse"
3117 mpegaudio_parser_select="mpegaudioheader"
3118 mpegvideo_parser_select="mpegvideo"
3119 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
3120 vc1_parser_select="vc1dsp"
3121
3122 # bitstream_filters
3123 aac_adtstoasc_bsf_select="adts_header"
3124 av1_frame_merge_bsf_select="cbs_av1"
3125 av1_frame_split_bsf_select="cbs_av1"
3126 av1_metadata_bsf_select="cbs_av1"
3127 eac3_core_bsf_select="ac3_parser"
3128 filter_units_bsf_select="cbs"
3129 h264_metadata_bsf_deps="const_nan"
3130 h264_metadata_bsf_select="cbs_h264"
3131 h264_redundant_pps_bsf_select="cbs_h264"
3132 hevc_metadata_bsf_select="cbs_h265"
3133 mjpeg2jpeg_bsf_select="jpegtables"
3134 mpeg2_metadata_bsf_select="cbs_mpeg2"
3135 trace_headers_bsf_select="cbs"
3136 vp9_metadata_bsf_select="cbs_vp9"
3137
3138 # external libraries
3139 aac_at_decoder_deps="audiotoolbox"
3140 aac_at_decoder_select="aac_adtstoasc_bsf"
3141 ac3_at_decoder_deps="audiotoolbox"
3142 ac3_at_decoder_select="ac3_parser"
3143 adpcm_ima_qt_at_decoder_deps="audiotoolbox"
3144 alac_at_decoder_deps="audiotoolbox"
3145 amr_nb_at_decoder_deps="audiotoolbox"
3146 avisynth_deps_any="libdl LoadLibrary"
3147 avisynth_demuxer_deps="avisynth"
3148 avisynth_demuxer_select="riffdec"
3149 eac3_at_decoder_deps="audiotoolbox"
3150 eac3_at_decoder_select="ac3_parser"
3151 gsm_ms_at_decoder_deps="audiotoolbox"
3152 ilbc_at_decoder_deps="audiotoolbox"
3153 mp1_at_decoder_deps="audiotoolbox"
3154 mp2_at_decoder_deps="audiotoolbox"
3155 mp3_at_decoder_deps="audiotoolbox"
3156 mp1_at_decoder_select="mpegaudioheader"
3157 mp2_at_decoder_select="mpegaudioheader"
3158 mp3_at_decoder_select="mpegaudioheader"
3159 pcm_alaw_at_decoder_deps="audiotoolbox"
3160 pcm_mulaw_at_decoder_deps="audiotoolbox"
3161 qdmc_decoder_select="fft"
3162 qdmc_at_decoder_deps="audiotoolbox"
3163 qdm2_at_decoder_deps="audiotoolbox"
3164 aac_at_encoder_deps="audiotoolbox"
3165 aac_at_encoder_select="audio_frame_queue"
3166 alac_at_encoder_deps="audiotoolbox"
3167 alac_at_encoder_select="audio_frame_queue"
3168 ilbc_at_encoder_deps="audiotoolbox"
3169 ilbc_at_encoder_select="audio_frame_queue"
3170 pcm_alaw_at_encoder_deps="audiotoolbox"
3171 pcm_alaw_at_encoder_select="audio_frame_queue"
3172 pcm_mulaw_at_encoder_deps="audiotoolbox"
3173 pcm_mulaw_at_encoder_select="audio_frame_queue"
3174 chromaprint_muxer_deps="chromaprint"
3175 h264_videotoolbox_encoder_deps="pthreads"
3176 h264_videotoolbox_encoder_select="videotoolbox_encoder"
3177 hevc_videotoolbox_encoder_deps="pthreads"
3178 hevc_videotoolbox_encoder_select="videotoolbox_encoder"
3179 libaom_av1_decoder_deps="libaom"
3180 libaom_av1_encoder_deps="libaom"
3181 libaom_av1_encoder_select="extract_extradata_bsf"
3182 libaribb24_decoder_deps="libaribb24"
3183 libcelt_decoder_deps="libcelt"
3184 libcodec2_decoder_deps="libcodec2"
3185 libcodec2_encoder_deps="libcodec2"
3186 libdav1d_decoder_deps="libdav1d"
3187 libdavs2_decoder_deps="libdavs2"
3188 libfdk_aac_decoder_deps="libfdk_aac"
3189 libfdk_aac_encoder_deps="libfdk_aac"
3190 libfdk_aac_encoder_select="audio_frame_queue"
3191 libgme_demuxer_deps="libgme"
3192 libgsm_decoder_deps="libgsm"
3193 libgsm_encoder_deps="libgsm"
3194 libgsm_ms_decoder_deps="libgsm"
3195 libgsm_ms_encoder_deps="libgsm"
3196 libilbc_decoder_deps="libilbc"
3197 libilbc_encoder_deps="libilbc"
3198 libkvazaar_encoder_deps="libkvazaar"
3199 libmodplug_demuxer_deps="libmodplug"
3200 libmp3lame_encoder_deps="libmp3lame"
3201 libmp3lame_encoder_select="audio_frame_queue mpegaudioheader"
3202 libopencore_amrnb_decoder_deps="libopencore_amrnb"
3203 libopencore_amrnb_encoder_deps="libopencore_amrnb"
3204 libopencore_amrnb_encoder_select="audio_frame_queue"
3205 libopencore_amrwb_decoder_deps="libopencore_amrwb"
3206 libopenh264_decoder_deps="libopenh264"
3207 libopenh264_decoder_select="h264_mp4toannexb_bsf"
3208 libopenh264_encoder_deps="libopenh264"
3209 libopenjpeg_decoder_deps="libopenjpeg"
3210 libopenjpeg_encoder_deps="libopenjpeg"
3211 libopenmpt_demuxer_deps="libopenmpt"
3212 libopus_decoder_deps="libopus"
3213 libopus_encoder_deps="libopus"
3214 libopus_encoder_select="audio_frame_queue"
3215 librav1e_encoder_deps="librav1e"
3216 librav1e_encoder_select="extract_extradata_bsf"
3217 librsvg_decoder_deps="librsvg"
3218 libshine_encoder_deps="libshine"
3219 libshine_encoder_select="audio_frame_queue"
3220 libspeex_decoder_deps="libspeex"
3221 libspeex_encoder_deps="libspeex"
3222 libspeex_encoder_select="audio_frame_queue"
3223 libtheora_encoder_deps="libtheora"
3224 libtwolame_encoder_deps="libtwolame"
3225 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
3226 libvorbis_decoder_deps="libvorbis"
3227 libvorbis_encoder_deps="libvorbis libvorbisenc"
3228 libvorbis_encoder_select="audio_frame_queue"
3229 libvpx_vp8_decoder_deps="libvpx"
3230 libvpx_vp8_encoder_deps="libvpx"
3231 libvpx_vp9_decoder_deps="libvpx"
3232 libvpx_vp9_encoder_deps="libvpx"
3233 libwavpack_encoder_deps="libwavpack"
3234 libwavpack_encoder_select="audio_frame_queue"
3235 libwebp_encoder_deps="libwebp"
3236 libwebp_anim_encoder_deps="libwebp"
3237 libx262_encoder_deps="libx262"
3238 libx264_encoder_deps="libx264"
3239 libx264rgb_encoder_deps="libx264 x264_csp_bgr"
3240 libx264rgb_encoder_select="libx264_encoder"
3241 libx265_encoder_deps="libx265"
3242 libxavs_encoder_deps="libxavs"
3243 libxavs2_encoder_deps="libxavs2"
3244 libxvid_encoder_deps="libxvid"
3245 libzvbi_teletext_decoder_deps="libzvbi"
3246 vapoursynth_demuxer_deps="vapoursynth"
3247 videotoolbox_suggest="coreservices"
3248 videotoolbox_deps="corefoundation coremedia corevideo"
3249 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
3250
3251 # demuxers / muxers
3252 ac3_demuxer_select="ac3_parser"
3253 act_demuxer_select="riffdec"
3254 aiff_muxer_select="iso_media"
3255 asf_demuxer_select="riffdec"
3256 asf_o_demuxer_select="riffdec"
3257 asf_muxer_select="riffenc"
3258 asf_stream_muxer_select="asf_muxer"
3259 av1_demuxer_select="av1_frame_merge_bsf av1_parser"
3260 avi_demuxer_select="iso_media riffdec exif"
3261 avi_muxer_select="riffenc"
3262 caf_demuxer_select="iso_media riffdec"
3263 caf_muxer_select="iso_media"
3264 dash_muxer_select="mp4_muxer"
3265 dash_demuxer_deps="libxml2"
3266 dirac_demuxer_select="dirac_parser"
3267 dts_demuxer_select="dca_parser"
3268 dtshd_demuxer_select="dca_parser"
3269 dv_demuxer_select="dvprofile"
3270 dv_muxer_select="dvprofile"
3271 dxa_demuxer_select="riffdec"
3272 eac3_demuxer_select="ac3_parser"
3273 f4v_muxer_select="mov_muxer"
3274 fifo_muxer_deps="threads"
3275 flac_demuxer_select="flac_parser"
3276 hds_muxer_select="flv_muxer"
3277 hls_muxer_select="mpegts_muxer"
3278 hls_muxer_suggest="gcrypt openssl"
3279 image2_alias_pix_demuxer_select="image2_demuxer"
3280 image2_brender_pix_demuxer_select="image2_demuxer"
3281 ipod_muxer_select="mov_muxer"
3282 ismv_muxer_select="mov_muxer"
3283 ivf_muxer_select="av1_metadata_bsf vp9_superframe_bsf"
3284 matroska_audio_muxer_select="matroska_muxer"
3285 matroska_demuxer_select="iso_media riffdec"
3286 matroska_demuxer_suggest="bzlib lzo zlib"
3287 matroska_muxer_select="iso_media riffenc"
3288 mmf_muxer_select="riffenc"
3289 mov_demuxer_select="iso_media riffdec"
3290 mov_demuxer_suggest="zlib"
3291 mov_muxer_select="iso_media riffenc rtpenc_chain"
3292 mp3_demuxer_select="mpegaudio_parser"
3293 mp3_muxer_select="mpegaudioheader"
3294 mp4_muxer_select="mov_muxer"
3295 mpegts_demuxer_select="iso_media"
3296 mpegts_muxer_select="adts_muxer latm_muxer"
3297 mpegtsraw_demuxer_select="mpegts_demuxer"
3298 mxf_muxer_select="golomb"
3299 mxf_d10_muxer_select="mxf_muxer"
3300 mxf_opatom_muxer_select="mxf_muxer"
3301 nut_muxer_select="riffenc"
3302 nuv_demuxer_select="riffdec"
3303 oga_muxer_select="ogg_muxer"
3304 ogg_demuxer_select="dirac_parse"
3305 ogv_muxer_select="ogg_muxer"
3306 opus_muxer_select="ogg_muxer"
3307 psp_muxer_select="mov_muxer"
3308 rtp_demuxer_select="sdp_demuxer"
3309 rtp_muxer_select="golomb jpegtables"
3310 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
3311 rtsp_demuxer_select="http_protocol rtpdec"
3312 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
3313 sap_demuxer_select="sdp_demuxer"
3314 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
3315 sdp_demuxer_select="rtpdec"
3316 smoothstreaming_muxer_select="ismv_muxer"
3317 spdif_demuxer_select="adts_header"
3318 spdif_muxer_select="adts_header"
3319 spx_muxer_select="ogg_muxer"
3320 swf_demuxer_suggest="zlib"
3321 tak_demuxer_select="tak_parser"
3322 tg2_muxer_select="mov_muxer"
3323 tgp_muxer_select="mov_muxer"
3324 vobsub_demuxer_select="mpegps_demuxer"
3325 w64_demuxer_select="wav_demuxer"
3326 w64_muxer_select="wav_muxer"
3327 wav_demuxer_select="riffdec"
3328 wav_muxer_select="riffenc"
3329 webm_muxer_select="iso_media riffenc"
3330 webm_dash_manifest_demuxer_select="matroska_demuxer"
3331 wtv_demuxer_select="mpegts_demuxer riffdec"
3332 wtv_muxer_select="mpegts_muxer riffenc"
3333 xmv_demuxer_select="riffdec"
3334 xwma_demuxer_select="riffdec"
3335
3336 # indevs / outdevs
3337 android_camera_indev_deps="android camera2ndk mediandk pthreads"
3338 android_camera_indev_extralibs="-landroid -lcamera2ndk -lmediandk"
3339 alsa_indev_deps="alsa"
3340 alsa_outdev_deps="alsa"
3341 avfoundation_indev_deps="avfoundation corevideo coremedia pthreads"
3342 avfoundation_indev_suggest="coregraphics applicationservices"
3343 avfoundation_indev_extralibs="-framework Foundation"
3344 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
3345 caca_outdev_deps="libcaca"
3346 decklink_deps_any="libdl LoadLibrary"
3347 decklink_indev_deps="decklink threads"
3348 decklink_indev_extralibs="-lstdc++"
3349 decklink_outdev_deps="decklink threads"
3350 decklink_outdev_suggest="libklvanc"
3351 decklink_outdev_extralibs="-lstdc++"
3352 dshow_indev_deps="IBaseFilter"
3353 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
3354 fbdev_indev_deps="linux_fb_h"
3355 fbdev_outdev_deps="linux_fb_h"
3356 gdigrab_indev_deps="CreateDIBSection"
3357 gdigrab_indev_extralibs="-lgdi32"
3358 gdigrab_indev_select="bmp_decoder"
3359 iec61883_indev_deps="libiec61883"
3360 jack_indev_deps="libjack"
3361 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
3362 kmsgrab_indev_deps="libdrm"
3363 lavfi_indev_deps="avfilter"
3364 libcdio_indev_deps="libcdio"
3365 libdc1394_indev_deps="libdc1394"
3366 openal_indev_deps="openal"
3367 opengl_outdev_deps="opengl"
3368 opengl_outdev_suggest="sdl2"
3369 oss_indev_deps_any="sys_soundcard_h"
3370 oss_outdev_deps_any="sys_soundcard_h"
3371 pulse_indev_deps="libpulse"
3372 pulse_outdev_deps="libpulse"
3373 sdl2_outdev_deps="sdl2"
3374 sndio_indev_deps="sndio"
3375 sndio_outdev_deps="sndio"
3376 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
3377 v4l2_indev_suggest="libv4l2"
3378 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
3379 v4l2_outdev_suggest="libv4l2"
3380 vfwcap_indev_deps="vfw32 vfwcap_defines"
3381 xcbgrab_indev_deps="libxcb"
3382 xcbgrab_indev_suggest="libxcb_shm libxcb_shape libxcb_xfixes"
3383 xv_outdev_deps="xlib"
3384
3385 # protocols
3386 async_protocol_deps="threads"
3387 bluray_protocol_deps="libbluray"
3388 ffrtmpcrypt_protocol_conflict="librtmp_protocol"
3389 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl mbedtls"
3390 ffrtmpcrypt_protocol_select="tcp_protocol"
3391 ffrtmphttp_protocol_conflict="librtmp_protocol"
3392 ffrtmphttp_protocol_select="http_protocol"
3393 ftp_protocol_select="tcp_protocol"
3394 gopher_protocol_select="network"
3395 http_protocol_select="tcp_protocol"
3396 http_protocol_suggest="zlib"
3397 httpproxy_protocol_select="tcp_protocol"
3398 httpproxy_protocol_suggest="zlib"
3399 https_protocol_select="tls_protocol"
3400 https_protocol_suggest="zlib"
3401 icecast_protocol_select="http_protocol"
3402 mmsh_protocol_select="http_protocol"
3403 mmst_protocol_select="network"
3404 rtmp_protocol_conflict="librtmp_protocol"
3405 rtmp_protocol_select="tcp_protocol"
3406 rtmp_protocol_suggest="zlib"
3407 rtmpe_protocol_select="ffrtmpcrypt_protocol"
3408 rtmpe_protocol_suggest="zlib"
3409 rtmps_protocol_conflict="librtmp_protocol"
3410 rtmps_protocol_select="tls_protocol"
3411 rtmps_protocol_suggest="zlib"
3412 rtmpt_protocol_select="ffrtmphttp_protocol"
3413 rtmpt_protocol_suggest="zlib"
3414 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
3415 rtmpte_protocol_suggest="zlib"
3416 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
3417 rtmpts_protocol_suggest="zlib"
3418 rtp_protocol_select="udp_protocol"
3419 schannel_conflict="openssl gnutls libtls mbedtls"
3420 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
3421 sctp_protocol_select="network"
3422 securetransport_conflict="openssl gnutls libtls mbedtls"
3423 srtp_protocol_select="rtp_protocol srtp"
3424 tcp_protocol_select="network"
3425 tls_protocol_deps_any="gnutls openssl schannel securetransport libtls mbedtls"
3426 tls_protocol_select="tcp_protocol"
3427 udp_protocol_select="network"
3428 udplite_protocol_select="network"
3429 unix_protocol_deps="sys_un_h"
3430 unix_protocol_select="network"
3431
3432 # external library protocols
3433 librtmp_protocol_deps="librtmp"
3434 librtmpe_protocol_deps="librtmp"
3435 librtmps_protocol_deps="librtmp"
3436 librtmpt_protocol_deps="librtmp"
3437 librtmpte_protocol_deps="librtmp"
3438 libsmbclient_protocol_deps="libsmbclient gplv3"
3439 libsrt_protocol_deps="libsrt"
3440 libsrt_protocol_select="network"
3441 libssh_protocol_deps="libssh"
3442 libtls_conflict="openssl gnutls mbedtls"
3443 libzmq_protocol_deps="libzmq"
3444 libzmq_protocol_select="network"
3445
3446 # filters
3447 afftdn_filter_deps="avcodec"
3448 afftdn_filter_select="fft"
3449 afftfilt_filter_deps="avcodec"
3450 afftfilt_filter_select="fft"
3451 afir_filter_deps="avcodec"
3452 afir_filter_select="rdft"
3453 amovie_filter_deps="avcodec avformat"
3454 aresample_filter_deps="swresample"
3455 asr_filter_deps="pocketsphinx"
3456 ass_filter_deps="libass"
3457 atempo_filter_deps="avcodec"
3458 atempo_filter_select="rdft"
3459 avgblur_opencl_filter_deps="opencl"
3460 azmq_filter_deps="libzmq"
3461 blackframe_filter_deps="gpl"
3462 bm3d_filter_deps="avcodec"
3463 bm3d_filter_select="dct"
3464 boxblur_filter_deps="gpl"
3465 boxblur_opencl_filter_deps="opencl gpl"
3466 bs2b_filter_deps="libbs2b"
3467 colorkey_opencl_filter_deps="opencl"
3468 colormatrix_filter_deps="gpl"
3469 convolution_opencl_filter_deps="opencl"
3470 convolve_filter_deps="avcodec"
3471 convolve_filter_select="fft"
3472 coreimage_filter_deps="coreimage appkit"
3473 coreimage_filter_extralibs="-framework OpenGL"
3474 coreimagesrc_filter_deps="coreimage appkit"
3475 coreimagesrc_filter_extralibs="-framework OpenGL"
3476 cover_rect_filter_deps="avcodec avformat gpl"
3477 cropdetect_filter_deps="gpl"
3478 deconvolve_filter_deps="avcodec"
3479 deconvolve_filter_select="fft"
3480 deinterlace_qsv_filter_deps="libmfx"
3481 deinterlace_vaapi_filter_deps="vaapi"
3482 delogo_filter_deps="gpl"
3483 denoise_vaapi_filter_deps="vaapi"
3484 derain_filter_select="dnn"
3485 deshake_filter_select="pixelutils"
3486 deshake_opencl_filter_deps="opencl"
3487 dilation_opencl_filter_deps="opencl"
3488 dnn_processing_filter_select="dnn"
3489 drawtext_filter_deps="libfreetype"
3490 drawtext_filter_suggest="libfontconfig libfribidi"
3491 elbg_filter_deps="avcodec"
3492 eq_filter_deps="gpl"
3493 erosion_opencl_filter_deps="opencl"
3494 fftfilt_filter_deps="avcodec"
3495 fftfilt_filter_select="rdft"
3496 fftdnoiz_filter_deps="avcodec"
3497 fftdnoiz_filter_select="fft"
3498 find_rect_filter_deps="avcodec avformat gpl"
3499 firequalizer_filter_deps="avcodec"
3500 firequalizer_filter_select="rdft"
3501 flite_filter_deps="libflite"
3502 framerate_filter_select="scene_sad"
3503 freezedetect_filter_select="scene_sad"
3504 frei0r_filter_deps="frei0r libdl"
3505 frei0r_src_filter_deps="frei0r libdl"
3506 fspp_filter_deps="gpl"
3507 headphone_filter_select="fft"
3508 histeq_filter_deps="gpl"
3509 hqdn3d_filter_deps="gpl"
3510 interlace_filter_deps="gpl"
3511 kerndeint_filter_deps="gpl"
3512 ladspa_filter_deps="ladspa libdl"
3513 lensfun_filter_deps="liblensfun version3"
3514 lv2_filter_deps="lv2"
3515 mcdeint_filter_deps="avcodec gpl"
3516 movie_filter_deps="avcodec avformat"
3517 mpdecimate_filter_deps="gpl"
3518 mpdecimate_filter_select="pixelutils"
3519 minterpolate_filter_select="scene_sad"
3520 mptestsrc_filter_deps="gpl"
3521 negate_filter_deps="lut_filter"
3522 nlmeans_opencl_filter_deps="opencl"
3523 nnedi_filter_deps="gpl"
3524 ocr_filter_deps="libtesseract"
3525 ocv_filter_deps="libopencv"
3526 openclsrc_filter_deps="opencl"
3527 overlay_opencl_filter_deps="opencl"
3528 overlay_qsv_filter_deps="libmfx"
3529 overlay_qsv_filter_select="qsvvpp"
3530 owdenoise_filter_deps="gpl"
3531 pan_filter_deps="swresample"
3532 perspective_filter_deps="gpl"
3533 phase_filter_deps="gpl"
3534 pp7_filter_deps="gpl"
3535 pp_filter_deps="gpl postproc"
3536 prewitt_opencl_filter_deps="opencl"
3537 procamp_vaapi_filter_deps="vaapi"
3538 program_opencl_filter_deps="opencl"
3539 pullup_filter_deps="gpl"
3540 removelogo_filter_deps="avcodec avformat swscale"
3541 repeatfields_filter_deps="gpl"
3542 resample_filter_deps="avresample"
3543 roberts_opencl_filter_deps="opencl"
3544 rubberband_filter_deps="librubberband"
3545 sab_filter_deps="gpl swscale"
3546 scale2ref_filter_deps="swscale"
3547 scale_filter_deps="swscale"
3548 scale_qsv_filter_deps="libmfx"
3549 select_filter_select="scene_sad"
3550 sharpness_vaapi_filter_deps="vaapi"
3551 showcqt_filter_deps="avcodec avformat swscale"
3552 showcqt_filter_suggest="libfontconfig libfreetype"
3553 showcqt_filter_select="fft"
3554 showfreqs_filter_deps="avcodec"
3555 showfreqs_filter_select="fft"
3556 showspatial_filter_select="fft"
3557 showspectrum_filter_deps="avcodec"
3558 showspectrum_filter_select="fft"
3559 showspectrumpic_filter_deps="avcodec"
3560 showspectrumpic_filter_select="fft"
3561 signature_filter_deps="gpl avcodec avformat"
3562 sinc_filter_select="rdft"
3563 smartblur_filter_deps="gpl swscale"
3564 sobel_opencl_filter_deps="opencl"
3565 sofalizer_filter_deps="libmysofa avcodec"
3566 sofalizer_filter_select="fft"
3567 spectrumsynth_filter_deps="avcodec"
3568 spectrumsynth_filter_select="fft"
3569 spp_filter_deps="gpl avcodec"
3570 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3571 sr_filter_deps="avformat swscale"
3572 sr_filter_select="dnn"
3573 stereo3d_filter_deps="gpl"
3574 subtitles_filter_deps="avformat avcodec libass"
3575 super2xsai_filter_deps="gpl"
3576 pixfmts_super2xsai_test_deps="super2xsai_filter"
3577 superequalizer_filter_select="rdft"
3578 surround_filter_select="rdft"
3579 tinterlace_filter_deps="gpl"
3580 tinterlace_merge_test_deps="tinterlace_filter"
3581 tinterlace_pad_test_deps="tinterlace_filter"
3582 tonemap_filter_deps="const_nan"
3583 tonemap_vaapi_filter_deps="vaapi VAProcFilterParameterBufferHDRToneMapping"
3584 tonemap_opencl_filter_deps="opencl const_nan"
3585 transpose_opencl_filter_deps="opencl"
3586 transpose_vaapi_filter_deps="vaapi VAProcPipelineCaps_rotation_flags"
3587 unsharp_opencl_filter_deps="opencl"
3588 uspp_filter_deps="gpl avcodec"
3589 vaguedenoiser_filter_deps="gpl"
3590 vidstabdetect_filter_deps="libvidstab"
3591 vidstabtransform_filter_deps="libvidstab"
3592 libvmaf_filter_deps="libvmaf pthreads"
3593 zmq_filter_deps="libzmq"
3594 zoompan_filter_deps="swscale"
3595 zscale_filter_deps="libzimg const_nan"
3596 scale_vaapi_filter_deps="vaapi"
3597 vpp_qsv_filter_deps="libmfx"
3598 vpp_qsv_filter_select="qsvvpp"
3599 yadif_cuda_filter_deps="ffnvcodec"
3600 yadif_cuda_filter_deps_any="cuda_nvcc cuda_llvm"
3601
3602 # examples
3603 avio_dir_cmd_deps="avformat avutil"
3604 avio_reading_deps="avformat avcodec avutil"
3605 decode_audio_example_deps="avcodec avutil"
3606 decode_video_example_deps="avcodec avutil"
3607 demuxing_decoding_example_deps="avcodec avformat avutil"
3608 encode_audio_example_deps="avcodec avutil"
3609 encode_video_example_deps="avcodec avutil"
3610 extract_mvs_example_deps="avcodec avformat avutil"
3611 filter_audio_example_deps="avfilter avutil"
3612 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3613 filtering_video_example_deps="avfilter avcodec avformat avutil"
3614 http_multiclient_example_deps="avformat avutil fork"
3615 hw_decode_example_deps="avcodec avformat avutil"
3616 metadata_example_deps="avformat avutil"
3617 muxing_example_deps="avcodec avformat avutil swscale"
3618 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
3619 remuxing_example_deps="avcodec avformat avutil"
3620 resampling_audio_example_deps="avutil swresample"
3621 scaling_video_example_deps="avutil swscale"
3622 transcode_aac_example_deps="avcodec avformat swresample"
3623 transcoding_example_deps="avfilter avcodec avformat avutil"
3624 vaapi_encode_example_deps="avcodec avutil h264_vaapi_encoder"
3625 vaapi_transcode_example_deps="avcodec avformat avutil h264_vaapi_encoder"
3626
3627 # EXTRALIBS_LIST
3628 cpu_init_extralibs="pthreads_extralibs"
3629 cws2fws_extralibs="zlib_extralibs"
3630
3631 # libraries, in any order
3632 avcodec_deps="avutil"
3633 avcodec_suggest="libm"
3634 avcodec_select="null_bsf"
3635 avdevice_deps="avformat avcodec avutil"
3636 avdevice_suggest="libm"
3637 avfilter_deps="avutil"
3638 avfilter_suggest="libm"
3639 avformat_deps="avcodec avutil"
3640 avformat_suggest="libm network zlib"
3641 avresample_deps="avutil"
3642 avresample_suggest="libm"
3643 avutil_suggest="clock_gettime ffnvcodec libm libdrm libmfx opencl user32 vaapi videotoolbox corefoundation corevideo coremedia bcrypt"
3644 postproc_deps="avutil gpl"
3645 postproc_suggest="libm"
3646 swresample_deps="avutil"
3647 swresample_suggest="libm libsoxr"
3648 swscale_deps="avutil"
3649 swscale_suggest="libm"
3650
3651 avcodec_extralibs="pthreads_extralibs iconv_extralibs dxva2_extralibs"
3652 avfilter_extralibs="pthreads_extralibs"
3653 avutil_extralibs="d3d11va_extralibs nanosleep_extralibs pthreads_extralibs vaapi_drm_extralibs vaapi_x11_extralibs vdpau_x11_extralibs"
3654
3655 # programs
3656 ffmpeg_deps="avcodec avfilter avformat"
3657 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3658                hflip_filter null_filter
3659                transpose_filter trim_filter vflip_filter"
3660 ffmpeg_suggest="ole32 psapi shell32"
3661 ffplay_deps="avcodec avformat swscale swresample sdl2"
3662 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3663 ffplay_suggest="shell32"
3664 ffprobe_deps="avcodec avformat"
3665 ffprobe_suggest="shell32"
3666
3667 # documentation
3668 podpages_deps="perl"
3669 manpages_deps="perl pod2man"
3670 htmlpages_deps="perl"
3671 htmlpages_deps_any="makeinfo_html texi2html"
3672 txtpages_deps="perl makeinfo"
3673 doc_deps_any="manpages htmlpages podpages txtpages"
3674
3675 # default parameters
3676
3677 logfile="ffbuild/config.log"
3678
3679 # installation paths
3680 prefix_default="/usr/local"
3681 bindir_default='${prefix}/bin'
3682 datadir_default='${prefix}/share/ffmpeg'
3683 docdir_default='${prefix}/share/doc/ffmpeg'
3684 incdir_default='${prefix}/include'
3685 libdir_default='${prefix}/lib'
3686 mandir_default='${prefix}/share/man'
3687
3688 # toolchain
3689 ar_default="ar"
3690 cc_default="gcc"
3691 cxx_default="g++"
3692 host_cc_default="gcc"
3693 doxygen_default="doxygen"
3694 install="install"
3695 ln_s_default="ln -s -f"
3696 nm_default="nm -g"
3697 pkg_config_default=pkg-config
3698 ranlib_default="ranlib"
3699 strip_default="strip"
3700 version_script='--version-script'
3701 objformat="elf32"
3702 x86asmexe_default="nasm"
3703 windres_default="windres"
3704 striptype="direct"
3705
3706 # OS
3707 target_os_default=$(tolower $(uname -s))
3708 host_os=$target_os_default
3709
3710 # machine
3711 if test "$target_os_default" = aix; then
3712     arch_default=$(uname -p)
3713     strip_default="strip -X32_64"
3714     nm_default="nm -g -X32_64"
3715 else
3716     arch_default=$(uname -m)
3717 fi
3718 cpu="generic"
3719 intrinsics="none"
3720
3721 # configurable options
3722 enable $PROGRAM_LIST
3723 enable $DOCUMENT_LIST
3724 enable $EXAMPLE_LIST
3725 enable $(filter_out avresample $LIBRARY_LIST)
3726 enable stripping
3727
3728 enable asm
3729 enable debug
3730 enable doc
3731 enable faan faandct faanidct
3732 enable large_tests
3733 enable optimizations
3734 enable runtime_cpudetect
3735 enable safe_bitstream_reader
3736 enable static
3737 enable swscale_alpha
3738 enable valgrind_backtrace
3739
3740 sws_max_filter_size_default=256
3741 set_default sws_max_filter_size
3742
3743 # internal components are enabled by default
3744 enable $EXTRALIBS_LIST
3745
3746 # Avoid external, non-system, libraries getting enabled by dependency resolution
3747 disable $EXTERNAL_LIBRARY_LIST $HWACCEL_LIBRARY_LIST
3748
3749 # build settings
3750 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3751 LIBPREF="lib"
3752 LIBSUF=".a"
3753 FULLNAME='$(NAME)$(BUILDSUF)'
3754 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3755 SLIBPREF="lib"
3756 SLIBSUF=".so"
3757 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3758 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3759 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3760 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3761 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3762 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3763 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
3764
3765 asflags_filter=echo
3766 cflags_filter=echo
3767 ldflags_filter=echo
3768
3769 AS_C='-c'
3770 AS_O='-o $@'
3771 CC_C='-c'
3772 CC_E='-E -o $@'
3773 CC_O='-o $@'
3774 CXX_C='-c'
3775 CXX_O='-o $@'
3776 OBJCC_C='-c'
3777 OBJCC_E='-E -o $@'
3778 OBJCC_O='-o $@'
3779 X86ASM_O='-o $@'
3780 LD_O='-o $@'
3781 LD_LIB='-l%'
3782 LD_PATH='-L'
3783 HOSTCC_C='-c'
3784 HOSTCC_E='-E -o $@'
3785 HOSTCC_O='-o $@'
3786 HOSTLD_O='-o $@'
3787 NVCC_C='-c'
3788 NVCC_O='-o $@'
3789
3790 host_extralibs='-lm'
3791 host_cflags_filter=echo
3792 host_ldflags_filter=echo
3793
3794 target_path='$(CURDIR)'
3795
3796 # since the object filename is not given with the -MM flag, the compiler
3797 # is only able to print the basename, and we must add the path ourselves
3798 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3799 DEPFLAGS='-MM'
3800
3801 mkdir -p ffbuild
3802
3803 # find source path
3804 if test -f configure; then
3805     source_path=.
3806 elif test -f src/configure; then
3807     source_path=src
3808 else
3809     source_path=$(cd $(dirname "$0"); pwd)
3810     case "$source_path" in
3811         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3812     esac
3813     test -e "$source_path/config.h" &&
3814         die "Out of tree builds are impossible with config.h in source dir."
3815 fi
3816
3817 for v in "$@"; do
3818     r=${v#*=}
3819     l=${v%"$r"}
3820     r=$(sh_quote "$r")
3821     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3822 done
3823
3824 find_things_extern(){
3825     thing=$1
3826     pattern=$2
3827     file=$source_path/$3
3828     out=${4:-$thing}
3829     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$out/p" "$file"
3830 }
3831
3832 find_filters_extern(){
3833     file=$source_path/$1
3834     sed -n 's/^extern AVFilter ff_[avfsinkrc]\{2,5\}_\([[:alnum:]_]\{1,\}\);/\1_filter/p' $file
3835 }
3836
3837 FILTER_LIST=$(find_filters_extern libavfilter/allfilters.c)
3838 OUTDEV_LIST=$(find_things_extern muxer AVOutputFormat libavdevice/alldevices.c outdev)
3839 INDEV_LIST=$(find_things_extern demuxer AVInputFormat libavdevice/alldevices.c indev)
3840 MUXER_LIST=$(find_things_extern muxer AVOutputFormat libavformat/allformats.c)
3841 DEMUXER_LIST=$(find_things_extern demuxer AVInputFormat libavformat/allformats.c)
3842 ENCODER_LIST=$(find_things_extern encoder AVCodec libavcodec/allcodecs.c)
3843 DECODER_LIST=$(find_things_extern decoder AVCodec libavcodec/allcodecs.c)
3844 CODEC_LIST="
3845     $ENCODER_LIST
3846     $DECODER_LIST
3847 "
3848 PARSER_LIST=$(find_things_extern parser AVCodecParser libavcodec/parsers.c)
3849 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3850 HWACCEL_LIST=$(find_things_extern hwaccel AVHWAccel libavcodec/hwaccels.h)
3851 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3852
3853 AVCODEC_COMPONENTS_LIST="
3854     $BSF_LIST
3855     $DECODER_LIST
3856     $ENCODER_LIST
3857     $HWACCEL_LIST
3858     $PARSER_LIST
3859 "
3860
3861 AVDEVICE_COMPONENTS_LIST="
3862     $INDEV_LIST
3863     $OUTDEV_LIST
3864 "
3865
3866 AVFILTER_COMPONENTS_LIST="
3867     $FILTER_LIST
3868 "
3869
3870 AVFORMAT_COMPONENTS_LIST="
3871     $DEMUXER_LIST
3872     $MUXER_LIST
3873     $PROTOCOL_LIST
3874 "
3875
3876 ALL_COMPONENTS="
3877     $AVCODEC_COMPONENTS_LIST
3878     $AVDEVICE_COMPONENTS_LIST
3879     $AVFILTER_COMPONENTS_LIST
3880     $AVFORMAT_COMPONENTS_LIST
3881 "
3882
3883 for n in $COMPONENT_LIST; do
3884     v=$(toupper ${n%s})_LIST
3885     eval enable \$$v
3886     eval ${n}_if_any="\$$v"
3887 done
3888
3889 enable $ARCH_EXT_LIST
3890
3891 die_unknown(){
3892     echo "Unknown option \"$1\"."
3893     echo "See $0 --help for available options."
3894     exit 1
3895 }
3896
3897 print_in_columns() {
3898     tr ' ' '\n' | sort | tr '\r\n' '  ' | awk -v col_width=24 -v width="$ncols" '
3899     {
3900         num_cols = width > col_width ? int(width / col_width) : 1;
3901         num_rows = int((NF + num_cols-1) / num_cols);
3902         y = x = 1;
3903         for (y = 1; y <= num_rows; y++) {
3904             i = y;
3905             for (x = 1; x <= num_cols; x++) {
3906                 if (i <= NF) {
3907                   line = sprintf("%s%-" col_width "s", line, $i);
3908                 }
3909                 i = i + num_rows;
3910             }
3911             print line; line = "";
3912         }
3913     }' | sed 's/ *$//'
3914 }
3915
3916 show_list() {
3917     suffix=_$1
3918     shift
3919     echo $* | sed s/$suffix//g | print_in_columns
3920     exit 0
3921 }
3922
3923 rand_list(){
3924     IFS=', '
3925     set -- $*
3926     unset IFS
3927     for thing; do
3928         comp=${thing%:*}
3929         prob=${thing#$comp}
3930         prob=${prob#:}
3931         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3932         echo "prob ${prob:-0.5}"
3933         printf '%s\n' $comp
3934     done
3935 }
3936
3937 do_random(){
3938     action=$1
3939     shift
3940     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3941     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3942 }
3943
3944 for opt do
3945     optval="${opt#*=}"
3946     case "$opt" in
3947         --extra-ldflags=*)
3948             add_ldflags $optval
3949         ;;
3950         --extra-ldexeflags=*)
3951             add_ldexeflags $optval
3952         ;;
3953         --extra-ldsoflags=*)
3954             add_ldsoflags $optval
3955         ;;
3956         --extra-ldlibflags=*)
3957             warn "The --extra-ldlibflags option is only provided for compatibility and will be\n"\
3958                  "removed in the future. Use --extra-ldsoflags instead."
3959             add_ldsoflags $optval
3960         ;;
3961         --extra-libs=*)
3962             add_extralibs $optval
3963         ;;
3964         --disable-devices)
3965             disable $INDEV_LIST $OUTDEV_LIST
3966         ;;
3967         --enable-debug=*)
3968             debuglevel="$optval"
3969         ;;
3970         --disable-programs)
3971             disable $PROGRAM_LIST
3972         ;;
3973         --disable-everything)
3974             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3975         ;;
3976         --disable-all)
3977             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3978             disable $LIBRARY_LIST $PROGRAM_LIST doc
3979             enable avutil
3980         ;;
3981         --enable-random|--disable-random)
3982             action=${opt%%-random}
3983             do_random ${action#--} $COMPONENT_LIST
3984         ;;
3985         --enable-random=*|--disable-random=*)
3986             action=${opt%%-random=*}
3987             do_random ${action#--} $optval
3988         ;;
3989         --enable-sdl)
3990             enable sdl2
3991         ;;
3992         --enable-*=*|--disable-*=*)
3993             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3994             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3995             eval list=\$$(toupper $thing)_LIST
3996             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3997             list=$(filter "$name" $list)
3998             [ "$list" = "" ] && warn "Option $opt did not match anything"
3999             test $action = enable && warn_if_gets_disabled $list
4000             $action $list
4001         ;;
4002         --enable-yasm|--disable-yasm)
4003             warn "The ${opt} option is only provided for compatibility and will be\n"\
4004                  "removed in the future. Use --enable-x86asm / --disable-x86asm instead."
4005             test $opt = --enable-yasm && x86asm=yes || x86asm=no
4006         ;;
4007         --yasmexe=*)
4008             warn "The --yasmexe option is only provided for compatibility and will be\n"\
4009                  "removed in the future. Use --x86asmexe instead."
4010             x86asmexe="$optval"
4011         ;;
4012         --enable-?*|--disable-?*)
4013             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
4014             if is_in $option $COMPONENT_LIST; then
4015                 test $action = disable && action=unset
4016                 eval $action \$$(toupper ${option%s})_LIST
4017             elif is_in $option $CMDLINE_SELECT; then
4018                 $action $option
4019             else
4020                 die_unknown $opt
4021             fi
4022         ;;
4023         --list-*)
4024             NAME="${opt#--list-}"
4025             is_in $NAME $COMPONENT_LIST || die_unknown $opt
4026             NAME=${NAME%s}
4027             eval show_list $NAME \$$(toupper $NAME)_LIST
4028         ;;
4029         --help|-h) show_help
4030         ;;
4031         --quiet|-q) quiet=yes
4032         ;;
4033         --fatal-warnings) enable fatal_warnings
4034         ;;
4035         --libfuzzer=*)
4036             libfuzzer_path="$optval"
4037         ;;
4038         *)
4039             optname="${opt%%=*}"
4040             optname="${optname#--}"
4041             optname=$(echo "$optname" | sed 's/-/_/g')
4042             if is_in $optname $CMDLINE_SET; then
4043                 eval $optname='$optval'
4044             elif is_in $optname $CMDLINE_APPEND; then
4045                 append $optname "$optval"
4046             else
4047                 die_unknown $opt
4048             fi
4049         ;;
4050     esac
4051 done
4052
4053 for e in $env; do
4054     eval "export $e"
4055 done
4056
4057 if disabled autodetect; then
4058
4059     # Unless iconv is explicitely disabled by the user, we still want to probe
4060     # for the iconv from the libc.
4061     disabled iconv || enable libc_iconv
4062
4063     disable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
4064     disable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
4065 fi
4066 # Mark specifically enabled, but normally autodetected libraries as requested.
4067 for lib in $AUTODETECT_LIBS; do
4068     enabled $lib && request $lib
4069 done
4070 #TODO: switch to $AUTODETECT_LIBS when $THREADS_LIST is supported the same way
4071 enable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
4072 enable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
4073
4074 disabled logging && logfile=/dev/null
4075
4076 # command line configuration sanity checks
4077
4078 # we need to build at least one lib type
4079 if ! enabled_any static shared; then
4080     cat <<EOF
4081 At least one library type must be built.
4082 Specify --enable-static to build the static libraries or --enable-shared to
4083 build the shared libraries as well. To only build the shared libraries specify
4084 --disable-static in addition to --enable-shared.
4085 EOF
4086     exit 1
4087 fi
4088
4089 die_license_disabled() {
4090     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
4091 }
4092
4093 die_license_disabled_gpl() {
4094     enabled $1 || { enabled $v && die "$v is incompatible with the gpl and --enable-$1 is not specified."; }
4095 }
4096
4097 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
4098 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
4099
4100 enabled gpl && map "die_license_disabled_gpl nonfree" $EXTERNAL_LIBRARY_NONFREE_LIST
4101 map "die_license_disabled nonfree" $HWACCEL_LIBRARY_NONFREE_LIST
4102
4103 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
4104
4105 if enabled nonfree; then
4106     license="nonfree and unredistributable"
4107 elif enabled gplv3; then
4108     license="GPL version 3 or later"
4109 elif enabled lgplv3; then
4110     license="LGPL version 3 or later"
4111 elif enabled gpl; then
4112     license="GPL version 2 or later"
4113 else
4114     license="LGPL version 2.1 or later"
4115 fi
4116
4117 enabled_all gnutls openssl &&
4118     die "GnuTLS and OpenSSL must not be enabled at the same time."
4119
4120 enabled_all gnutls mbedtls &&
4121     die "GnuTLS and mbedTLS must not be enabled at the same time."
4122
4123 enabled_all openssl mbedtls &&
4124     die "OpenSSL and mbedTLS must not be enabled at the same time."
4125
4126 # Disable all the library-specific components if the library itself
4127 # is disabled, see AVCODEC_LIST and following _LIST variables.
4128
4129 disable_components(){
4130     disabled ${1} && disable $(
4131         eval components="\$$(toupper ${1})_COMPONENTS"
4132         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
4133     )
4134 }
4135
4136 map 'disable_components $v' $LIBRARY_LIST
4137
4138 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
4139 set >> $logfile
4140
4141 test -n "$valgrind" && toolchain="valgrind-memcheck"
4142
4143 enabled ossfuzz && ! echo $CFLAGS | grep -q -- "-fsanitize="  && ! echo $CFLAGS | grep -q -- "-fcoverage-mapping" &&{
4144     add_cflags  -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp -fno-omit-frame-pointer
4145     add_ldflags -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp
4146 }
4147
4148 case "$toolchain" in
4149     *-asan)
4150         cc_default="${toolchain%-asan}"
4151         add_cflags  -fsanitize=address
4152         add_ldflags -fsanitize=address
4153     ;;
4154     *-msan)
4155         cc_default="${toolchain%-msan}"
4156         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
4157         add_ldflags -fsanitize=memory
4158     ;;
4159     *-tsan)
4160         cc_default="${toolchain%-tsan}"
4161         add_cflags  -fsanitize=thread
4162         add_ldflags -fsanitize=thread
4163         case "$toolchain" in
4164             gcc-tsan)
4165                 add_cflags  -fPIC
4166                 add_ldflags -fPIC
4167                 ;;
4168         esac
4169     ;;
4170     *-usan)
4171         cc_default="${toolchain%-usan}"
4172         add_cflags  -fsanitize=undefined
4173         add_ldflags -fsanitize=undefined
4174     ;;
4175     valgrind-*)
4176         target_exec_default="valgrind"
4177         case "$toolchain" in
4178             valgrind-massif)
4179                 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"
4180                 ;;
4181             valgrind-memcheck)
4182                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
4183                 ;;
4184         esac
4185     ;;
4186     msvc)
4187         # Check whether the current MSVC version needs the C99 converter.
4188         # From MSVC 2013 (compiler major version 18) onwards, it does actually
4189         # support enough of C99 to build ffmpeg. Default to the new
4190         # behaviour if the regexp was unable to match anything, since this
4191         # successfully parses the version number of existing supported
4192         # versions that require the converter (MSVC 2010 and 2012).
4193         cl_major_ver=$(cl.exe 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
4194         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
4195             cc_default="cl.exe"
4196             cxx_default="cl.exe"
4197         else
4198             die "Unsupported MSVC version (2013 or newer required)"
4199         fi
4200         ld_default="$source_path/compat/windows/mslink"
4201         nm_default="dumpbin.exe -symbols"
4202         ar_default="lib.exe"
4203         case "$arch" in
4204         aarch64|arm64)
4205             as_default="armasm64.exe"
4206             ;;
4207         arm*)
4208             as_default="armasm.exe"
4209             ;;
4210         esac
4211         target_os_default="win32"
4212         # Use a relative path for TMPDIR. This makes sure all the
4213         # ffconf temp files are written with a relative path, avoiding
4214         # issues with msys/win32 path conversion for MSVC parameters
4215         # such as -Fo<file> or -out:<file>.
4216         TMPDIR=.
4217     ;;
4218     icl)
4219         cc_default="icl"
4220         ld_default="xilink"
4221         nm_default="dumpbin -symbols"
4222         ar_default="xilib"
4223         target_os_default="win32"
4224         TMPDIR=.
4225     ;;
4226     gcov)
4227         add_cflags  -fprofile-arcs -ftest-coverage
4228         add_ldflags -fprofile-arcs -ftest-coverage
4229     ;;
4230     llvm-cov)
4231         add_cflags -fprofile-arcs -ftest-coverage
4232         add_ldflags --coverage
4233     ;;
4234     hardened)
4235         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
4236         add_cflags   -fno-strict-overflow -fstack-protector-all
4237         add_ldflags  -Wl,-z,relro -Wl,-z,now
4238         add_cflags   -fPIE
4239         add_ldexeflags -fPIE -pie
4240     ;;
4241     ?*)
4242         die "Unknown toolchain $toolchain"
4243     ;;
4244 esac
4245
4246 if test -n "$cross_prefix"; then
4247     test -n "$arch" && test -n "$target_os" ||
4248         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
4249     enable cross_compile
4250 fi
4251
4252 set_default target_os
4253 if test "$target_os" = android; then
4254     cc_default="clang"
4255 fi
4256
4257 ar_default="${cross_prefix}${ar_default}"
4258 cc_default="${cross_prefix}${cc_default}"
4259 cxx_default="${cross_prefix}${cxx_default}"
4260 nm_default="${cross_prefix}${nm_default}"
4261 pkg_config_default="${cross_prefix}${pkg_config_default}"
4262 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
4263     ranlib_default="${cross_prefix}${ranlib_default} -D"
4264 else
4265     ranlib_default="${cross_prefix}${ranlib_default}"
4266 fi
4267 strip_default="${cross_prefix}${strip_default}"
4268 windres_default="${cross_prefix}${windres_default}"
4269
4270 sysinclude_default="${sysroot}/usr/include"
4271
4272 if enabled cuda_sdk; then
4273     warn "Option --enable-cuda-sdk is deprecated. Use --enable-cuda-nvcc instead."
4274     enable cuda_nvcc
4275 fi
4276
4277 if enabled cuda_nvcc; then
4278     nvcc_default="nvcc"
4279     nvccflags_default="-gencode arch=compute_30,code=sm_30 -O2"
4280 else
4281     nvcc_default="clang"
4282     nvccflags_default="--cuda-gpu-arch=sm_30 -O2"
4283     NVCC_C=""
4284 fi
4285
4286 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
4287     target_exec x86asmexe nvcc
4288 enabled cross_compile || host_cc_default=$cc
4289 set_default host_cc
4290
4291 pkg_config_fail_message=""
4292 if ! $pkg_config --version >/dev/null 2>&1; then
4293     warn "$pkg_config not found, library detection may fail."
4294     pkg_config=false
4295 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
4296     pkg_config_fail_message="
4297 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
4298 fi
4299
4300 if test $doxygen != $doxygen_default && \
4301   ! $doxygen --version >/dev/null 2>&1; then
4302     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
4303 fi
4304
4305 exesuf() {
4306     case $1 in
4307         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
4308     esac
4309 }
4310
4311 EXESUF=$(exesuf $target_os)
4312 HOSTEXESUF=$(exesuf $host_os)
4313
4314 # set temporary file name
4315 : ${TMPDIR:=$TEMPDIR}
4316 : ${TMPDIR:=$TMP}
4317 : ${TMPDIR:=/tmp}
4318
4319 if [ -n "$tempprefix" ] ; then
4320     mktemp(){
4321         tmpname="$tempprefix.${HOSTNAME}.${UID}"
4322         echo "$tmpname"
4323         mkdir "$tmpname"
4324     }
4325 elif ! test_cmd mktemp -u XXXXXX; then
4326     # simple replacement for missing mktemp
4327     # NOT SAFE FOR GENERAL USE
4328     mktemp(){
4329         tmpname="${2%%XXX*}.${HOSTNAME}.${UID}.$$"
4330         echo "$tmpname"
4331         mkdir "$tmpname"
4332     }
4333 fi
4334
4335 FFTMPDIR=$(mktemp -d "${TMPDIR}/ffconf.XXXXXXXX" 2> /dev/null) ||
4336     die "Unable to create temporary directory in $TMPDIR."
4337
4338 tmpfile(){
4339     tmp="${FFTMPDIR}/test"$2
4340     (set -C; exec > $tmp) 2> /dev/null ||
4341         die "Unable to create temporary file in $FFTMPDIR."
4342     eval $1=$tmp
4343 }
4344
4345 trap 'rm -rf -- "$FFTMPDIR"' EXIT
4346 trap 'exit 2' INT
4347
4348 tmpfile TMPASM .asm
4349 tmpfile TMPC   .c
4350 tmpfile TMPCPP .cpp
4351 tmpfile TMPE   $EXESUF
4352 tmpfile TMPH   .h
4353 tmpfile TMPM   .m
4354 tmpfile TMPCU  .cu
4355 tmpfile TMPO   .o
4356 tmpfile TMPS   .S
4357 tmpfile TMPSH  .sh
4358 tmpfile TMPV   .ver
4359
4360 unset -f mktemp
4361
4362 chmod +x $TMPE
4363
4364 # make sure we can execute files in $TMPDIR
4365 cat > $TMPSH 2>> $logfile <<EOF
4366 #! /bin/sh
4367 EOF
4368 chmod +x $TMPSH >> $logfile 2>&1
4369 if ! $TMPSH >> $logfile 2>&1; then
4370     cat <<EOF
4371 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
4372 variable to another directory and make sure that it is not mounted noexec.
4373 EOF
4374     die "Sanity test failed."
4375 fi
4376
4377 armasm_flags(){
4378     for flag; do
4379         case $flag in
4380             # Filter out MSVC cl.exe options from cflags that shouldn't
4381             # be passed to gas-preprocessor
4382             -M[TD]*)                                            ;;
4383             *)                  echo $flag                      ;;
4384         esac
4385    done
4386 }
4387
4388 cparser_flags(){
4389     for flag; do
4390         case $flag in
4391             -Wno-switch)             echo -Wno-switch-enum ;;
4392             -Wno-format-zero-length) ;;
4393             -Wdisabled-optimization) ;;
4394             -Wno-pointer-sign)       echo -Wno-other ;;
4395             *)                       echo $flag ;;
4396         esac
4397     done
4398 }
4399
4400 msvc_common_flags(){
4401     for flag; do
4402         case $flag in
4403             # In addition to specifying certain flags under the compiler
4404             # specific filters, they must be specified here as well or else the
4405             # generic catch all at the bottom will print the original flag.
4406             -Wall)                ;;
4407             -Wextra)              ;;
4408             -std=c99)             ;;
4409             # Common flags
4410             -fomit-frame-pointer) ;;
4411             -g)                   echo -Z7 ;;
4412             -fno-math-errno)      ;;
4413             -fno-common)          ;;
4414             -fno-signed-zeros)    ;;
4415             -fPIC)                ;;
4416             -mthumb)              ;;
4417             -march=*)             ;;
4418             -lz)                  echo zlib.lib ;;
4419             -lx264)               echo libx264.lib ;;
4420             -lstdc++)             ;;
4421             -l*)                  echo ${flag#-l}.lib ;;
4422             -LARGEADDRESSAWARE)   echo $flag ;;
4423             -L*)                  echo -libpath:${flag#-L} ;;
4424             *)                    echo $flag ;;
4425         esac
4426     done
4427 }
4428
4429 msvc_flags(){
4430     msvc_common_flags "$@"
4431     for flag; do
4432         case $flag in
4433             -Wall)                echo -W3 -wd4018 -wd4146 -wd4244 -wd4305     \
4434                                        -wd4554 ;;
4435             -Wextra)              echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
4436                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
4437                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
4438                                        -wd4307 \
4439                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
4440         esac
4441     done
4442 }
4443
4444 icl_flags(){
4445     msvc_common_flags "$@"
4446     for flag; do
4447         case $flag in
4448             # Despite what Intel's documentation says -Wall, which is supported
4449             # on Windows, does enable remarks so disable them here.
4450             -Wall)                echo $flag -Qdiag-disable:remark ;;
4451             -std=c99)             echo -Qstd=c99 ;;
4452             -flto)                echo -ipo ;;
4453         esac
4454     done
4455 }
4456
4457 icc_flags(){
4458     for flag; do
4459         case $flag in
4460             -flto)                echo -ipo ;;
4461             *)                    echo $flag ;;
4462         esac
4463     done
4464 }
4465
4466 suncc_flags(){
4467     for flag; do
4468         case $flag in
4469             -march=*|-mcpu=*)
4470                 case "${flag#*=}" in
4471                     native)                   echo -xtarget=native       ;;
4472                     v9|niagara)               echo -xarch=sparc          ;;
4473                     ultrasparc)               echo -xarch=sparcvis       ;;
4474                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
4475                     i586|pentium)             echo -xchip=pentium        ;;
4476                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
4477                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
4478                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
4479                     pentium4*)          echo -xtarget=pentium4           ;;
4480                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
4481                     *-sse3)             echo -xarch=sse3                 ;;
4482                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
4483                     bonnell)                   echo -xarch=ssse3         ;;
4484                     corei7|nehalem)            echo -xtarget=nehalem     ;;
4485                     westmere)                  echo -xtarget=westmere    ;;
4486                     silvermont)                echo -xarch=sse4_2        ;;
4487                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
4488                     core-avx*|ivybridge|haswell|broadwell|skylake*|knl)
4489                                                echo -xarch=avx           ;;
4490                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
4491                     btver1)                    echo -xarch=amdsse4a      ;;
4492                     btver2|bdver*|znver*)      echo -xarch=avx           ;;
4493                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
4494                     k8|opteron|athlon64|athlon-fx)
4495                                                echo -xarch=sse2a         ;;
4496                     athlon*)                   echo -xarch=pentium_proa  ;;
4497                 esac
4498                 ;;
4499             -std=c99)             echo -xc99              ;;
4500             -fomit-frame-pointer) echo -xregs=frameptr    ;;
4501             -fPIC)                echo -KPIC -xcode=pic32 ;;
4502             -W*,*)                echo $flag              ;;
4503             -f*-*|-W*|-mimpure-text)                      ;;
4504             -shared)              echo -G                 ;;
4505             *)                    echo $flag              ;;
4506         esac
4507     done
4508 }
4509
4510 probe_cc(){
4511     pfx=$1
4512     _cc=$2
4513     first=$3
4514
4515     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
4516     unset _ld_o _ldflags _ld_lib _ld_path
4517     unset _depflags _DEPCMD _DEPFLAGS
4518     _flags_filter=echo
4519
4520     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
4521         true # no-op to avoid reading stdin in following checks
4522     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
4523         _type=llvm_gcc
4524         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
4525         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
4526         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4527         _cflags_speed='-O3'
4528         _cflags_size='-Os'
4529     elif $_cc -v 2>&1 | grep -qi ^gcc; then
4530         _type=gcc
4531         gcc_version=$($_cc --version | head -n1)
4532         gcc_basever=$($_cc -dumpversion)
4533         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
4534         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
4535         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
4536         case $gcc_basever in
4537             2) ;;
4538             2.*) ;;
4539             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
4540         esac
4541         if [ "$first" = true ]; then
4542             case $gcc_basever in
4543                 4.2*)
4544                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
4545             esac
4546         fi
4547         _cflags_speed='-O3'
4548         _cflags_size='-Os'
4549     elif $_cc --version 2>/dev/null | grep -q ^icc; then
4550         _type=icc
4551         _ident=$($_cc --version | head -n1)
4552         _depflags='-MMD'
4553         _cflags_speed='-O3'
4554         _cflags_size='-Os'
4555         _cflags_noopt='-O1'
4556         _flags_filter=icc_flags
4557     elif $_cc -v 2>&1 | grep -q xlc; then
4558         _type=xlc
4559         _ident=$($_cc -qversion 2>/dev/null | head -n1)
4560         _cflags_speed='-O5'
4561         _cflags_size='-O5 -qcompact'
4562     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
4563         test -d "$sysroot" || die "No valid sysroot specified."
4564         _type=armcc
4565         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
4566         armcc_conf="$PWD/armcc.conf"
4567         $_cc --arm_linux_configure                 \
4568              --arm_linux_config_file="$armcc_conf" \
4569              --configure_sysroot="$sysroot"        \
4570              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
4571              die "Error creating armcc configuration file."
4572         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
4573         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
4574         as_default="${cross_prefix}gcc"
4575         _depflags='-MMD'
4576         _cflags_speed='-O3'
4577         _cflags_size='-Os'
4578     elif $_cc -v 2>&1 | grep -q clang && ! $_cc -? > /dev/null 2>&1; then
4579         _type=clang
4580         _ident=$($_cc --version 2>/dev/null | head -n1)
4581         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4582         _cflags_speed='-O3'
4583         _cflags_size='-Oz'
4584     elif $_cc -V 2>&1 | grep -q Sun; then
4585         _type=suncc
4586         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
4587         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
4588         _DEPFLAGS='-xM1 -xc99'
4589         _ldflags='-std=c99'
4590         _cflags_speed='-O5'
4591         _cflags_size='-O5 -xspace'
4592         _flags_filter=suncc_flags
4593     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
4594         _type=pathscale
4595         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4596         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4597         _cflags_speed='-O2'
4598         _cflags_size='-Os'
4599         _flags_filter='filter_out -Wdisabled-optimization'
4600     elif $_cc -v 2>&1 | grep -q Open64; then
4601         _type=open64
4602         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4603         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4604         _cflags_speed='-O2'
4605         _cflags_size='-Os'
4606         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
4607     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
4608         _type=armasm
4609         _ident=$($_cc | head -n1)
4610         # 4509: "This form of conditional instruction is deprecated"
4611         _flags="-nologo -ignore 4509"
4612         _flags_filter=armasm_flags
4613     elif $_cc 2>&1 | grep -q Intel; then
4614         _type=icl
4615         _ident=$($_cc 2>&1 | head -n1)
4616         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
4617         # Not only is O3 broken on 13.x+ but it is slower on all previous
4618         # versions (tested) as well.
4619         _cflags_speed="-O2"
4620         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
4621         if $_cc 2>&1 | grep -q Linker; then
4622             _ld_o='-out:$@'
4623         else
4624             _ld_o='-Fe$@'
4625         fi
4626         _cc_o='-Fo$@'
4627         _cc_e='-P'
4628         _flags_filter=icl_flags
4629         _ld_lib='lib%.a'
4630         _ld_path='-libpath:'
4631         # -Qdiag-error to make icl error when seeing certain unknown arguments
4632         _flags='-nologo -Qdiag-error:4044,10157'
4633         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
4634         # with MSVC which enables it by default.
4635         _cflags='-Qms0 -Qvec- -Qsimd- -GS -fp:precise'
4636         disable stripping
4637     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
4638         # lld can emulate multiple different linkers; in ms link.exe mode,
4639         # the -? parameter gives the help output which contains an identifyable
4640         # string, while it gives an error in other modes.
4641         _type=lld-link
4642         # The link.exe mode doesn't have a switch for getting the version,
4643         # but we can force it back to gnu mode and get the version from there.
4644         _ident=$($_cc -flavor gnu --version 2>/dev/null)
4645         _ld_o='-out:$@'
4646         _flags_filter=msvc_flags
4647         _ld_lib='lib%.a'
4648         _ld_path='-libpath:'
4649     elif $_cc -nologo- 2>&1 | grep -q Microsoft || { $_cc -v 2>&1 | grep -q clang && $_cc -? > /dev/null 2>&1; }; then
4650         _type=msvc
4651         _ident=$($_cc 2>&1 | head -n1 | tr -d '\r')
4652         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
4653         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
4654         _cflags_speed="-O2"
4655         _cflags_size="-O1"
4656         _cflags_noopt="-O1"
4657         if $_cc -nologo- 2>&1 | grep -q Linker; then
4658             _ld_o='-out:$@'
4659         else
4660             _ld_o='-Fe$@'
4661         fi
4662         _cc_o='-Fo$@'
4663         _cc_e='-P -Fi$@'
4664         _flags_filter=msvc_flags
4665         _ld_lib='lib%.a'
4666         _ld_path='-libpath:'
4667         _flags='-nologo'
4668         disable stripping
4669     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
4670         _type=cparser
4671         _ident=$($_cc --version | head -n1)
4672         _depflags='-MMD'
4673         _cflags_speed='-O4'
4674         _cflags_size='-O2'
4675         _flags_filter=cparser_flags
4676     fi
4677
4678     eval ${pfx}_type=\$_type
4679     eval ${pfx}_ident=\$_ident
4680 }
4681
4682 set_ccvars(){
4683     eval ${1}_C=\${_cc_c-\${${1}_C}}
4684     eval ${1}_E=\${_cc_e-\${${1}_E}}
4685     eval ${1}_O=\${_cc_o-\${${1}_O}}
4686
4687     if [ -n "$_depflags" ]; then
4688         eval ${1}_DEPFLAGS=\$_depflags
4689     else
4690         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
4691         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
4692         eval DEP${1}FLAGS=\$_flags
4693     fi
4694 }
4695
4696 probe_cc cc "$cc" "true"
4697 cflags_filter=$_flags_filter
4698 cflags_speed=$_cflags_speed
4699 cflags_size=$_cflags_size
4700 cflags_noopt=$_cflags_noopt
4701 add_cflags $_flags $_cflags
4702 cc_ldflags=$_ldflags
4703 set_ccvars CC
4704 set_ccvars CXX
4705
4706 probe_cc hostcc "$host_cc"
4707 host_cflags_filter=$_flags_filter
4708 host_cflags_speed=$_cflags_speed
4709 add_host_cflags  $_flags $_cflags
4710 set_ccvars HOSTCC
4711
4712 test -n "$cc_type" && enable $cc_type ||
4713     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4714
4715 : ${as_default:=$cc}
4716 : ${objcc_default:=$cc}
4717 : ${dep_cc_default:=$cc}
4718 : ${ld_default:=$cc}
4719 : ${host_ld_default:=$host_cc}
4720 set_default ar as objcc dep_cc ld ln_s host_ld windres
4721
4722 probe_cc as "$as"
4723 asflags_filter=$_flags_filter
4724 add_asflags $_flags $_cflags
4725 set_ccvars AS
4726
4727 probe_cc objcc "$objcc"
4728 objcflags_filter=$_flags_filter
4729 add_objcflags $_flags $_cflags
4730 set_ccvars OBJC
4731
4732 probe_cc ld "$ld"
4733 ldflags_filter=$_flags_filter
4734 add_ldflags $_flags $_ldflags
4735 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4736 LD_O=${_ld_o-$LD_O}
4737 LD_LIB=${_ld_lib-$LD_LIB}
4738 LD_PATH=${_ld_path-$LD_PATH}
4739
4740 probe_cc hostld "$host_ld"
4741 host_ldflags_filter=$_flags_filter
4742 add_host_ldflags $_flags $_ldflags
4743 HOSTLD_O=${_ld_o-$HOSTLD_O}
4744
4745 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4746     probe_cc depcc "$dep_cc"
4747     CCDEP=${_DEPCMD:-$DEPCMD}
4748     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4749     DEPCCFLAGS=$_flags
4750 fi
4751
4752 if $ar 2>&1 | grep -q Microsoft; then
4753     arflags="-nologo"
4754     ar_o='-out:$@'
4755 elif $ar 2>&1 | grep -q "\[D\] "; then
4756     arflags="rcD"
4757     ar_o='$@'
4758 else
4759     arflags="rc"
4760     ar_o='$@'
4761 fi
4762
4763 add_cflags $extra_cflags
4764 add_cxxflags $extra_cxxflags
4765 add_objcflags $extra_objcflags
4766 add_asflags $extra_cflags
4767
4768 if test -n "$sysroot"; then
4769     case "$cc_type" in
4770         gcc|llvm_gcc|clang)
4771             add_cppflags --sysroot="$sysroot"
4772             add_ldflags --sysroot="$sysroot"
4773         ;;
4774     esac
4775 fi
4776
4777 if test "$cpu" = host; then
4778     enabled cross_compile &&
4779         die "--cpu=host makes no sense when cross-compiling."
4780
4781     case "$cc_type" in
4782         gcc|llvm_gcc)
4783             check_native(){
4784                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4785                 sed -n "/cc1.*$1=/{
4786                             s/.*$1=\\([^ ]*\\).*/\\1/
4787                             p
4788                             q
4789                         }" $TMPE
4790             }
4791             cpu=$(check_native -march || check_native -mcpu)
4792         ;;
4793         clang)
4794             check_native(){
4795                 $cc&n