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