avformat/mpegtsenc: use increasing numbers in default service names
[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-librsvg         enable SVG rasterization via librsvg [no]
258   --enable-librubberband   enable rubberband needed for rubberband filter [no]
259   --enable-librtmp         enable RTMP[E] support via librtmp [no]
260   --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
261   --enable-libsmbclient    enable Samba protocol via libsmbclient [no]
262   --enable-libsnappy       enable Snappy compression, needed for hap encoding [no]
263   --enable-libsoxr         enable Include libsoxr resampling [no]
264   --enable-libspeex        enable Speex de/encoding via libspeex [no]
265   --enable-libsrt          enable Haivision SRT protocol via libsrt [no]
266   --enable-libssh          enable SFTP protocol via libssh [no]
267   --enable-libtensorflow   enable TensorFlow as a DNN module backend
268                            for DNN based filters like sr [no]
269   --enable-libtesseract    enable Tesseract, needed for ocr filter [no]
270   --enable-libtheora       enable Theora encoding via libtheora [no]
271   --enable-libtls          enable LibreSSL (via libtls), needed for https support
272                            if openssl, gnutls or mbedtls is not used [no]
273   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
274   --enable-libv4l2         enable libv4l2/v4l-utils [no]
275   --enable-libvidstab      enable video stabilization using vid.stab [no]
276   --enable-libvmaf         enable vmaf filter via libvmaf [no]
277   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
278   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
279                            native implementation exists [no]
280   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
281   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
282   --enable-libwebp         enable WebP encoding via libwebp [no]
283   --enable-libx264         enable H.264 encoding via x264 [no]
284   --enable-libx265         enable HEVC encoding via x265 [no]
285   --enable-libxavs         enable AVS encoding via xavs [no]
286   --enable-libxavs2        enable AVS2 encoding via xavs2 [no]
287   --enable-libxcb          enable X11 grabbing using XCB [autodetect]
288   --enable-libxcb-shm      enable X11 grabbing shm communication [autodetect]
289   --enable-libxcb-xfixes   enable X11 grabbing mouse rendering [autodetect]
290   --enable-libxcb-shape    enable X11 grabbing shape rendering [autodetect]
291   --enable-libxvid         enable Xvid encoding via xvidcore,
292                            native MPEG-4/Xvid encoder exists [no]
293   --enable-libxml2         enable XML parsing using the C library libxml2, needed
294                            for dash demuxing support [no]
295   --enable-libzimg         enable z.lib, needed for zscale filter [no]
296   --enable-libzmq          enable message passing via libzmq [no]
297   --enable-libzvbi         enable teletext support via libzvbi [no]
298   --enable-lv2             enable LV2 audio filtering [no]
299   --disable-lzma           disable lzma [autodetect]
300   --enable-decklink        enable Blackmagic DeckLink I/O support [no]
301   --enable-mbedtls         enable mbedTLS, needed for https support
302                            if openssl, gnutls or libtls is not used [no]
303   --enable-mediacodec      enable Android MediaCodec support [no]
304   --enable-libmysofa       enable libmysofa, needed for sofalizer filter [no]
305   --enable-openal          enable OpenAL 1.1 capture support [no]
306   --enable-opencl          enable OpenCL processing [no]
307   --enable-opengl          enable OpenGL rendering [no]
308   --enable-openssl         enable openssl, needed for https support
309                            if gnutls, libtls or mbedtls is not used [no]
310   --enable-pocketsphinx    enable PocketSphinx, needed for asr filter [no]
311   --disable-sndio          disable sndio support [autodetect]
312   --disable-schannel       disable SChannel SSP, needed for TLS support on
313                            Windows if openssl and gnutls are not used [autodetect]
314   --disable-sdl2           disable sdl2 [autodetect]
315   --disable-securetransport disable Secure Transport, needed for TLS support
316                            on OSX if openssl and gnutls are not used [autodetect]
317   --enable-vapoursynth     enable VapourSynth demuxer [no]
318   --disable-xlib           disable xlib [autodetect]
319   --disable-zlib           disable zlib [autodetect]
320
321   The following libraries provide various hardware acceleration features:
322   --disable-amf            disable AMF video encoding code [autodetect]
323   --disable-audiotoolbox   disable Apple AudioToolbox code [autodetect]
324   --enable-cuda-nvcc       enable Nvidia CUDA compiler [no]
325   --disable-cuda-llvm      disable CUDA compilation using clang [autodetect]
326   --disable-cuvid          disable Nvidia CUVID support [autodetect]
327   --disable-d3d11va        disable Microsoft Direct3D 11 video acceleration code [autodetect]
328   --disable-dxva2          disable Microsoft DirectX 9 video acceleration code [autodetect]
329   --disable-ffnvcodec      disable dynamically linked Nvidia code [autodetect]
330   --enable-libdrm          enable DRM code (Linux) [no]
331   --enable-libmfx          enable Intel MediaSDK (AKA Quick Sync Video) code via libmfx [no]
332   --enable-libnpp          enable Nvidia Performance Primitives-based code [no]
333   --enable-mmal            enable Broadcom Multi-Media Abstraction Layer (Raspberry Pi) via MMAL [no]
334   --disable-nvdec          disable Nvidia video decoding acceleration (via hwaccel) [autodetect]
335   --disable-nvenc          disable Nvidia video encoding code [autodetect]
336   --enable-omx             enable OpenMAX IL code [no]
337   --enable-omx-rpi         enable OpenMAX IL code for Raspberry Pi [no]
338   --enable-rkmpp           enable Rockchip Media Process Platform code [no]
339   --disable-v4l2-m2m       disable V4L2 mem2mem code [autodetect]
340   --disable-vaapi          disable Video Acceleration API (mainly Unix/Intel) code [autodetect]
341   --disable-vdpau          disable Nvidia Video Decode and Presentation API for Unix code [autodetect]
342   --disable-videotoolbox   disable VideoToolbox code [autodetect]
343
344 Toolchain options:
345   --arch=ARCH              select architecture [$arch]
346   --cpu=CPU                select the minimum required CPU (affects
347                            instruction selection, may crash on older CPUs)
348   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
349   --progs-suffix=SUFFIX    program name suffix []
350   --enable-cross-compile   assume a cross-compiler is used
351   --sysroot=PATH           root of cross-build tree
352   --sysinclude=PATH        location of cross-build system headers
353   --target-os=OS           compiler targets OS [$target_os]
354   --target-exec=CMD        command to run executables on target
355   --target-path=DIR        path to view of build directory on target
356   --target-samples=DIR     path to samples directory on target
357   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
358   --toolchain=NAME         set tool defaults according to NAME
359                            (gcc-asan, clang-asan, gcc-msan, clang-msan,
360                            gcc-tsan, clang-tsan, gcc-usan, clang-usan,
361                            valgrind-massif, valgrind-memcheck,
362                            msvc, icl, gcov, llvm-cov, hardened)
363   --nm=NM                  use nm tool NM [$nm_default]
364   --ar=AR                  use archive tool AR [$ar_default]
365   --as=AS                  use assembler AS [$as_default]
366   --ln_s=LN_S              use symbolic link tool LN_S [$ln_s_default]
367   --strip=STRIP            use strip tool STRIP [$strip_default]
368   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
369   --x86asmexe=EXE          use nasm-compatible assembler EXE [$x86asmexe_default]
370   --cc=CC                  use C compiler CC [$cc_default]
371   --cxx=CXX                use C compiler CXX [$cxx_default]
372   --objcc=OCC              use ObjC compiler OCC [$cc_default]
373   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
374   --nvcc=NVCC              use Nvidia CUDA compiler NVCC or clang [$nvcc_default]
375   --ld=LD                  use linker LD [$ld_default]
376   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
377   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
378   --ranlib=RANLIB          use ranlib RANLIB [$ranlib_default]
379   --doxygen=DOXYGEN        use DOXYGEN to generate API doc [$doxygen_default]
380   --host-cc=HOSTCC         use host C compiler HOSTCC
381   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
382   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
383   --host-ld=HOSTLD         use host linker HOSTLD
384   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
385   --host-extralibs=HLIBS   use libs HLIBS when linking for host
386   --host-os=OS             compiler host OS [$target_os]
387   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
388   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
389   --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
390   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
391   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
392   --extra-ldsoflags=ELDFLAGS add ELDFLAGS to LDSOFLAGS [$LDSOFLAGS]
393   --extra-libs=ELIBS       add ELIBS [$ELIBS]
394   --extra-version=STRING   version string suffix []
395   --optflags=OPTFLAGS      override optimization-related compiler flags
396   --nvccflags=NVCCFLAGS    override nvcc flags [$nvccflags_default]
397   --build-suffix=SUFFIX    library name suffix []
398   --enable-pic             build position-independent code
399   --enable-thumb           compile for Thumb instruction set
400   --enable-lto             use link-time optimization
401   --env="ENV=override"     override the environment variables
402
403 Advanced options (experts only):
404   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
405   --custom-allocator=NAME  use a supported custom allocator
406   --disable-symver         disable symbol versioning
407   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
408   --disable-safe-bitstream-reader
409                            disable buffer boundary checking in bitreaders
410                            (faster, but may crash)
411   --sws-max-filter-size=N  the max filter size swscale uses [$sws_max_filter_size_default]
412
413 Optimization options (experts only):
414   --disable-asm            disable all assembly optimizations
415   --disable-altivec        disable AltiVec optimizations
416   --disable-vsx            disable VSX optimizations
417   --disable-power8         disable POWER8 optimizations
418   --disable-amd3dnow       disable 3DNow! optimizations
419   --disable-amd3dnowext    disable 3DNow! extended optimizations
420   --disable-mmx            disable MMX optimizations
421   --disable-mmxext         disable MMXEXT optimizations
422   --disable-sse            disable SSE optimizations
423   --disable-sse2           disable SSE2 optimizations
424   --disable-sse3           disable SSE3 optimizations
425   --disable-ssse3          disable SSSE3 optimizations
426   --disable-sse4           disable SSE4 optimizations
427   --disable-sse42          disable SSE4.2 optimizations
428   --disable-avx            disable AVX optimizations
429   --disable-xop            disable XOP optimizations
430   --disable-fma3           disable FMA3 optimizations
431   --disable-fma4           disable FMA4 optimizations
432   --disable-avx2           disable AVX2 optimizations
433   --disable-avx512         disable AVX-512 optimizations
434   --disable-aesni          disable AESNI optimizations
435   --disable-armv5te        disable armv5te optimizations
436   --disable-armv6          disable armv6 optimizations
437   --disable-armv6t2        disable armv6t2 optimizations
438   --disable-vfp            disable VFP optimizations
439   --disable-neon           disable NEON optimizations
440   --disable-inline-asm     disable use of inline assembly
441   --disable-x86asm         disable use of standalone x86 assembly
442   --disable-mipsdsp        disable MIPS DSP ASE R1 optimizations
443   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
444   --disable-msa            disable MSA optimizations
445   --disable-msa2           disable MSA2 optimizations
446   --disable-mipsfpu        disable floating point MIPS optimizations
447   --disable-mmi            disable Loongson SIMD optimizations
448   --disable-fast-unaligned consider unaligned accesses slow
449
450 Developer options (useful when working on FFmpeg itself):
451   --disable-debug          disable debugging symbols
452   --enable-debug=LEVEL     set the debug level [$debuglevel]
453   --disable-optimizations  disable compiler optimizations
454   --enable-extra-warnings  enable more compiler warnings
455   --disable-stripping      disable stripping of executables and shared libraries
456   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
457                            2 causes a slowdown at runtime.
458   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
459   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
460                            leaks and errors, using the specified valgrind binary.
461                            Cannot be combined with --target-exec
462   --enable-ftrapv          Trap arithmetic overflows
463   --samples=PATH           location of test samples for FATE, if not set use
464                            \$FATE_SAMPLES at make invocation time.
465   --enable-neon-clobber-test check NEON registers for clobbering (should be
466                            used only for debugging purposes)
467   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
468                            should be used only for debugging purposes)
469   --enable-random          randomly enable/disable components
470   --disable-random
471   --enable-random=LIST     randomly enable/disable specific components or
472   --disable-random=LIST    component groups. LIST is a comma-separated list
473                            of NAME[:PROB] entries where NAME is a component
474                            (group) and PROB the probability associated with
475                            NAME (default 0.5).
476   --random-seed=VALUE      seed value for --enable/disable-random
477   --disable-valgrind-backtrace do not print a backtrace under Valgrind
478                            (only applies to --disable-optimizations builds)
479   --enable-ossfuzz         Enable building fuzzer tool
480   --libfuzzer=PATH         path to libfuzzer
481   --ignore-tests=TESTS     comma-separated list (without "fate-" prefix
482                            in the name) of tests whose result is ignored
483   --enable-linux-perf      enable Linux Performance Monitor API
484
485 NOTE: Object files are built at the place where configure is launched.
486 EOF
487   exit 0
488 }
489
490 if test -t 1 && which tput >/dev/null 2>&1; then
491     ncolors=$(tput colors)
492     if test -n "$ncolors" && test $ncolors -ge 8; then
493         bold_color=$(tput bold)
494         warn_color=$(tput setaf 3)
495         error_color=$(tput setaf 1)
496         reset_color=$(tput sgr0)
497     fi
498     # 72 used instead of 80 since that's the default of pr
499     ncols=$(tput cols)
500 fi
501 : ${ncols:=72}
502
503 log(){
504     echo "$@" >> $logfile
505 }
506
507 log_file(){
508     log BEGIN "$1"
509     log_file_i=1
510     while IFS= read -r log_file_line; do
511         printf '%5d\t%s\n' "$log_file_i" "$log_file_line"
512         log_file_i=$(($log_file_i+1))
513     done < "$1" >> "$logfile"
514     log END "$1"
515 }
516
517 warn(){
518     log "WARNING: $*"
519     WARNINGS="${WARNINGS}WARNING: $*\n"
520 }
521
522 die(){
523     log "$@"
524     echo "$error_color$bold_color$@$reset_color"
525     cat <<EOF
526
527 If you think configure made a mistake, make sure you are using the latest
528 version from Git.  If the latest version fails, report the problem to the
529 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
530 EOF
531     if disabled logging; then
532         cat <<EOF
533 Rerun configure with logging enabled (do not use --disable-logging), and
534 include the log this produces with your report.
535 EOF
536     else
537         cat <<EOF
538 Include the log file "$logfile" produced by configure as this will help
539 solve the problem.
540 EOF
541     fi
542     exit 1
543 }
544
545 # Avoid locale weirdness, besides we really just want to translate ASCII.
546 toupper(){
547     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
548 }
549
550 tolower(){
551     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
552 }
553
554 c_escape(){
555     echo "$*" | sed 's/["\\]/\\\0/g'
556 }
557
558 sh_quote(){
559     v=$(echo "$1" | sed "s/'/'\\\\''/g")
560     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
561     echo "$v"
562 }
563
564 cleanws(){
565     echo "$@" | sed 's/^ *//;s/[[:space:]][[:space:]]*/ /g;s/ *$//'
566 }
567
568 filter(){
569     pat=$1
570     shift
571     for v; do
572         eval "case '$v' in $pat) printf '%s ' '$v' ;; esac"
573     done
574 }
575
576 filter_out(){
577     pat=$1
578     shift
579     for v; do
580         eval "case '$v' in $pat) ;; *) printf '%s ' '$v' ;; esac"
581     done
582 }
583
584 map(){
585     m=$1
586     shift
587     for v; do eval $m; done
588 }
589
590 add_suffix(){
591     suffix=$1
592     shift
593     for v; do echo ${v}${suffix}; done
594 }
595
596 remove_suffix(){
597     suffix=$1
598     shift
599     for v; do echo ${v%$suffix}; done
600 }
601
602 set_all(){
603     value=$1
604     shift
605     for var in $*; do
606         eval $var=$value
607     done
608 }
609
610 set_weak(){
611     value=$1
612     shift
613     for var; do
614         eval : \${$var:=$value}
615     done
616 }
617
618 sanitize_var_name(){
619     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
620 }
621
622 set_sanitized(){
623     var=$1
624     shift
625     eval $(sanitize_var_name "$var")='$*'
626 }
627
628 get_sanitized(){
629     eval echo \$$(sanitize_var_name "$1")
630 }
631
632 pushvar(){
633     for pvar in $*; do
634         eval level=\${${pvar}_level:=0}
635         eval ${pvar}_${level}="\$$pvar"
636         eval ${pvar}_level=$(($level+1))
637     done
638 }
639
640 popvar(){
641     for pvar in $*; do
642         eval level=\${${pvar}_level:-0}
643         test $level = 0 && continue
644         eval level=$(($level-1))
645         eval $pvar="\${${pvar}_${level}}"
646         eval ${pvar}_level=$level
647         eval unset ${pvar}_${level}
648     done
649 }
650
651 request(){
652     for var in $*; do
653         eval ${var}_requested=yes
654         eval $var=
655     done
656 }
657
658 warn_if_gets_disabled(){
659     for var in $*; do
660         WARN_IF_GETS_DISABLED_LIST="$WARN_IF_GETS_DISABLED_LIST $var"
661     done
662 }
663
664 enable(){
665     set_all yes $*
666 }
667
668 disable(){
669     set_all no $*
670 }
671
672 disable_with_reason(){
673     disable $1
674     eval "${1}_disable_reason=\"$2\""
675     if requested $1; then
676         die "ERROR: $1 requested, but $2"
677     fi
678 }
679
680 enable_weak(){
681     set_weak yes $*
682 }
683
684 disable_weak(){
685     set_weak no $*
686 }
687
688 enable_sanitized(){
689     for var; do
690         enable $(sanitize_var_name $var)
691     done
692 }
693
694 disable_sanitized(){
695     for var; do
696         disable $(sanitize_var_name $var)
697     done
698 }
699
700 do_enable_deep(){
701     for var; do
702         enabled $var && continue
703         set -- $var
704         eval enable_deep \$${var}_select
705         var=$1
706         eval enable_deep_weak \$${var}_suggest
707     done
708 }
709
710 enable_deep(){
711     do_enable_deep $*
712     enable $*
713 }
714
715 enable_deep_weak(){
716     for var; do
717         disabled $var && continue
718         set -- $var
719         do_enable_deep $var
720         var=$1
721         enable_weak $var
722     done
723 }
724
725 requested(){
726     test "${1#!}" = "$1" && op="=" || op="!="
727     eval test "x\$${1#!}_requested" $op "xyes"
728 }
729
730 enabled(){
731     test "${1#!}" = "$1" && op="=" || op="!="
732     eval test "x\$${1#!}" $op "xyes"
733 }
734
735 disabled(){
736     test "${1#!}" = "$1" && op="=" || op="!="
737     eval test "x\$${1#!}" $op "xno"
738 }
739
740 enabled_all(){
741     for opt; do
742         enabled $opt || return 1
743     done
744 }
745
746 disabled_all(){
747     for opt; do
748         disabled $opt || return 1
749     done
750 }
751
752 enabled_any(){
753     for opt; do
754         enabled $opt && return 0
755     done
756 }
757
758 disabled_any(){
759     for opt; do
760         disabled $opt && return 0
761     done
762     return 1
763 }
764
765 set_default(){
766     for opt; do
767         eval : \${$opt:=\$${opt}_default}
768     done
769 }
770
771 is_in(){
772     value=$1
773     shift
774     for var in $*; do
775         [ $var = $value ] && return 0
776     done
777     return 1
778 }
779
780 # The cfg loop is very hot (several thousands iterations), and in bash also
781 # potentialy quite slow. Try to abort the iterations early, preferably without
782 # calling functions. 70%+ of the time cfg is already done or without deps.
783 check_deps(){
784     for cfg; do
785         eval [ x\$${cfg}_checking = xdone ] && continue
786         eval [ x\$${cfg}_checking = xinprogress ] && die "Circular dependency for $cfg."
787
788         eval "
789         dep_all=\$${cfg}_deps
790         dep_any=\$${cfg}_deps_any
791         dep_con=\$${cfg}_conflict
792         dep_sel=\$${cfg}_select
793         dep_sgs=\$${cfg}_suggest
794         dep_ifa=\$${cfg}_if
795         dep_ifn=\$${cfg}_if_any
796         "
797
798         # most of the time here $cfg has no deps - avoid costly no-op work
799         if [ "$dep_all$dep_any$dep_con$dep_sel$dep_sgs$dep_ifa$dep_ifn" ]; then
800             eval ${cfg}_checking=inprogress
801
802             set -- $cfg "$dep_all" "$dep_any" "$dep_con" "$dep_sel" "$dep_sgs" "$dep_ifa" "$dep_ifn"
803             check_deps $dep_all $dep_any $dep_con $dep_sel $dep_sgs $dep_ifa $dep_ifn
804             cfg=$1; dep_all=$2; dep_any=$3; dep_con=$4; dep_sel=$5 dep_sgs=$6; dep_ifa=$7; dep_ifn=$8
805
806             [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
807             [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
808             enabled_all  $dep_all || { disable_with_reason $cfg "not all dependencies are satisfied: $dep_all"; }
809             enabled_any  $dep_any || { disable_with_reason $cfg "not any dependency is satisfied: $dep_any"; }
810             disabled_all $dep_con || { disable_with_reason $cfg "some conflicting dependencies are unsatisfied: $dep_con"; }
811             disabled_any $dep_sel && { disable_with_reason $cfg "some selected dependency is unsatisfied: $dep_sel"; }
812
813             enabled $cfg && enable_deep_weak $dep_sel $dep_sgs
814
815             for dep in $dep_all $dep_any $dep_sel $dep_sgs; do
816                 # filter out library deps, these do not belong in extralibs
817                 is_in $dep $LIBRARY_LIST && continue
818                 enabled $dep && eval append ${cfg}_extralibs ${dep}_extralibs
819             done
820         fi
821
822         eval ${cfg}_checking=done
823     done
824 }
825
826 print_config(){
827     pfx=$1
828     files=$2
829     shift 2
830     map 'eval echo "$v \${$v:-no}"' "$@" |
831     awk "BEGIN { split(\"$files\", files) }
832         {
833             c = \"$pfx\" toupper(\$1);
834             v = \$2;
835             sub(/yes/, 1, v);
836             sub(/no/,  0, v);
837             for (f in files) {
838                 file = files[f];
839                 if (file ~ /\\.h\$/) {
840                     printf(\"#define %s %d\\n\", c, v) >>file;
841                 } else if (file ~ /\\.asm\$/) {
842                     printf(\"%%define %s %d\\n\", c, v) >>file;
843                 } else if (file ~ /\\.mak\$/) {
844                     n = -v ? \"\" : \"!\";
845                     printf(\"%s%s=yes\\n\", n, c) >>file;
846                 } else if (file ~ /\\.texi\$/) {
847                     pre = -v ? \"\" : \"@c \";
848                     yesno = \$2;
849                     c2 = tolower(c);
850                     gsub(/_/, \"-\", c2);
851                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
852                 }
853             }
854         }"
855 }
856
857 print_enabled(){
858     suf=$1
859     shift
860     for v; do
861         enabled $v && printf "%s\n" ${v%$suf}
862     done
863 }
864
865 append(){
866     var=$1
867     shift
868     eval "$var=\"\$$var $*\""
869 }
870
871 prepend(){
872     var=$1
873     shift
874     eval "$var=\"$* \$$var\""
875 }
876
877 reverse () {
878     eval '
879         reverse_out=
880         for v in $'$1'; do
881             reverse_out="$v $reverse_out"
882         done
883         '$1'=$reverse_out
884     '
885 }
886
887 # keeps the last occurence of each non-unique item
888 unique(){
889     unique_out=
890     eval unique_in=\$$1
891     reverse unique_in
892     for v in $unique_in; do
893         # " $unique_out" +space such that every item is surrounded with spaces
894         case " $unique_out" in *" $v "*) continue; esac  # already in list
895         unique_out="$unique_out$v "
896     done
897     reverse unique_out
898     eval $1=\$unique_out
899 }
900
901 resolve(){
902     resolve_out=
903     eval resolve_in=\$$1
904     for v in $resolve_in; do
905         eval 'resolve_out="$resolve_out$'$v' "'
906     done
907     eval $1=\$resolve_out
908 }
909
910 add_cppflags(){
911     append CPPFLAGS "$@"
912 }
913
914 add_cflags(){
915     append CFLAGS $($cflags_filter "$@")
916 }
917
918 add_cflags_headers(){
919     append CFLAGS_HEADERS $($cflags_filter "$@")
920 }
921
922 add_cxxflags(){
923     append CXXFLAGS $($cflags_filter "$@")
924 }
925
926 add_objcflags(){
927     append OBJCFLAGS $($objcflags_filter "$@")
928 }
929
930 add_asflags(){
931     append ASFLAGS $($asflags_filter "$@")
932 }
933
934 add_ldflags(){
935     append LDFLAGS $($ldflags_filter "$@")
936 }
937
938 add_ldexeflags(){
939     append LDEXEFLAGS $($ldflags_filter "$@")
940 }
941
942 add_ldsoflags(){
943     append LDSOFLAGS $($ldflags_filter "$@")
944 }
945
946 add_extralibs(){
947     prepend extralibs $($ldflags_filter "$@")
948 }
949
950 add_stripflags(){
951     append ASMSTRIPFLAGS "$@"
952 }
953
954 add_host_cppflags(){
955     append host_cppflags "$@"
956 }
957
958 add_host_cflags(){
959     append host_cflags $($host_cflags_filter "$@")
960 }
961
962 add_host_ldflags(){
963     append host_ldflags $($host_ldflags_filter "$@")
964 }
965
966 add_compat(){
967     append compat_objs $1
968     shift
969     map 'add_cppflags -D$v' "$@"
970 }
971
972 test_cmd(){
973     log "$@"
974     "$@" >> $logfile 2>&1
975 }
976
977 test_stat(){
978     log test_stat "$@"
979     stat "$1" >> $logfile 2>&1
980 }
981
982 cc_e(){
983     eval printf '%s\\n' $CC_E
984 }
985
986 cc_o(){
987     eval printf '%s\\n' $CC_O
988 }
989
990 as_o(){
991     eval printf '%s\\n' $AS_O
992 }
993
994 x86asm_o(){
995     eval printf '%s\\n' $X86ASM_O
996 }
997
998 ld_o(){
999     eval printf '%s\\n' $LD_O
1000 }
1001
1002 hostcc_e(){
1003     eval printf '%s\\n' $HOSTCC_E
1004 }
1005
1006 hostcc_o(){
1007     eval printf '%s\\n' $HOSTCC_O
1008 }
1009
1010 nvcc_o(){
1011     eval printf '%s\\n' $NVCC_O
1012 }
1013
1014 test_cc(){
1015     log test_cc "$@"
1016     cat > $TMPC
1017     log_file $TMPC
1018     test_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
1019 }
1020
1021 test_cxx(){
1022     log test_cxx "$@"
1023     cat > $TMPCPP
1024     log_file $TMPCPP
1025     test_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
1026 }
1027
1028 test_objcc(){
1029     log test_objcc "$@"
1030     cat > $TMPM
1031     log_file $TMPM
1032     test_cmd $objcc -Werror=missing-prototypes $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPM
1033 }
1034
1035 test_nvcc(){
1036     log test_nvcc "$@"
1037     cat > $TMPCU
1038     log_file $TMPCU
1039     tmpcu_=$TMPCU
1040     tmpo_=$TMPO
1041     [ -x "$(command -v cygpath)" ] && tmpcu_=$(cygpath -m $tmpcu_) && tmpo_=$(cygpath -m $tmpo_)
1042     test_cmd $nvcc $nvccflags "$@" $NVCC_C $(nvcc_o $tmpo_) $tmpcu_
1043 }
1044
1045 check_nvcc() {
1046     log check_nvcc "$@"
1047     name=$1
1048     shift 1
1049     disabled $name && return
1050     disable $name
1051     test_nvcc "$@" <<EOF && enable $name
1052 extern "C" {
1053     __global__ void hello(unsigned char *data) {}
1054 }
1055 EOF
1056 }
1057
1058 test_cpp(){
1059     log test_cpp "$@"
1060     cat > $TMPC
1061     log_file $TMPC
1062     test_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
1063 }
1064
1065 test_as(){
1066     log test_as "$@"
1067     cat > $TMPS
1068     log_file $TMPS
1069     test_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
1070 }
1071
1072 test_x86asm(){
1073     log test_x86asm "$@"
1074     echo "$1" > $TMPASM
1075     log_file $TMPASM
1076     shift
1077     test_cmd $x86asmexe $X86ASMFLAGS -Werror "$@" $(x86asm_o $TMPO) $TMPASM
1078 }
1079
1080 check_cmd(){
1081     log check_cmd "$@"
1082     cmd=$1
1083     disabled $cmd && return
1084     disable $cmd
1085     test_cmd $@ && enable $cmd
1086 }
1087
1088 check_as(){
1089     log check_as "$@"
1090     name=$1
1091     code=$2
1092     shift 2
1093     disable $name
1094     test_as $@ <<EOF && enable $name
1095 $code
1096 EOF
1097 }
1098
1099 check_inline_asm(){
1100     log check_inline_asm "$@"
1101     name="$1"
1102     code="$2"
1103     shift 2
1104     disable $name
1105     test_cc "$@" <<EOF && enable $name
1106 void foo(void){ __asm__ volatile($code); }
1107 EOF
1108 }
1109
1110 check_inline_asm_flags(){
1111     log check_inline_asm_flags "$@"
1112     name="$1"
1113     code="$2"
1114     flags=''
1115     shift 2
1116     while [ "$1" != "" ]; do
1117       append flags $1
1118       shift
1119     done;
1120     disable $name
1121     cat > $TMPC <<EOF
1122 void foo(void){ __asm__ volatile($code); }
1123 EOF
1124     log_file $TMPC
1125     test_cmd $cc $CPPFLAGS $CFLAGS $flags "$@" $CC_C $(cc_o $TMPO) $TMPC &&
1126     enable $name && add_cflags $flags && add_asflags $flags && add_ldflags $flags
1127 }
1128
1129 check_insn(){
1130     log check_insn "$@"
1131     check_inline_asm ${1}_inline "\"$2\""
1132     check_as ${1}_external "$2"
1133 }
1134
1135 check_x86asm(){
1136     log check_x86asm "$@"
1137     name=$1
1138     shift
1139     disable $name
1140     test_x86asm "$@" && enable $name
1141 }
1142
1143 test_ld(){
1144     log test_ld "$@"
1145     type=$1
1146     shift 1
1147     flags=$(filter_out '-l*|*.so' $@)
1148     libs=$(filter '-l*|*.so' $@)
1149     test_$type $($cflags_filter $flags) || return
1150     flags=$($ldflags_filter $flags)
1151     libs=$($ldflags_filter $libs)
1152     test_cmd $ld $LDFLAGS $LDEXEFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
1153 }
1154
1155 check_ld(){
1156     log check_ld "$@"
1157     type=$1
1158     name=$2
1159     shift 2
1160     disable $name
1161     test_ld $type $@ && enable $name
1162 }
1163
1164 print_include(){
1165     hdr=$1
1166     test "${hdr%.h}" = "${hdr}" &&
1167         echo "#include $hdr"    ||
1168         echo "#include <$hdr>"
1169 }
1170
1171 test_code(){
1172     log test_code "$@"
1173     check=$1
1174     headers=$2
1175     code=$3
1176     shift 3
1177     {
1178         for hdr in $headers; do
1179             print_include $hdr
1180         done
1181         echo "int main(void) { $code; return 0; }"
1182     } | test_$check "$@"
1183 }
1184
1185 check_cppflags(){
1186     log check_cppflags "$@"
1187     test_cpp "$@" <<EOF && append CPPFLAGS "$@"
1188 #include <stdlib.h>
1189 EOF
1190 }
1191
1192 test_cflags(){
1193     log test_cflags "$@"
1194     set -- $($cflags_filter "$@")
1195     test_cc "$@" <<EOF
1196 int x;
1197 EOF
1198 }
1199
1200 check_cflags(){
1201     log check_cflags "$@"
1202     test_cflags "$@" && add_cflags "$@"
1203 }
1204
1205 check_cxxflags(){
1206     log check_cxxflags "$@"
1207     set -- $($cflags_filter "$@")
1208     test_cxx "$@" <<EOF && append CXXFLAGS "$@"
1209 int x;
1210 EOF
1211 }
1212
1213 test_objcflags(){
1214     log test_objcflags "$@"
1215     set -- $($objcflags_filter "$@")
1216     test_objcc "$@" <<EOF
1217 int x;
1218 EOF
1219 }
1220
1221 check_objcflags(){
1222     log check_objcflags "$@"
1223     test_objcflags "$@" && add_objcflags "$@"
1224 }
1225
1226 test_ldflags(){
1227     log test_ldflags "$@"
1228     set -- $($ldflags_filter "$@")
1229     test_ld "cc" "$@" <<EOF
1230 int main(void){ return 0; }
1231 EOF
1232 }
1233
1234 check_ldflags(){
1235     log check_ldflags "$@"
1236     test_ldflags "$@" && add_ldflags "$@"
1237 }
1238
1239 test_stripflags(){
1240     log test_stripflags "$@"
1241     # call test_cc to get a fresh TMPO
1242     test_cc <<EOF
1243 int main(void) { return 0; }
1244 EOF
1245     test_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
1246 }
1247
1248 check_stripflags(){
1249     log check_stripflags "$@"
1250     test_stripflags "$@" && add_stripflags "$@"
1251 }
1252
1253 check_headers(){
1254     log check_headers "$@"
1255     headers=$1
1256     shift
1257     disable_sanitized $headers
1258     {
1259         for hdr in $headers; do
1260             print_include $hdr
1261         done
1262         echo "int x;"
1263     } | test_cpp "$@" && enable_sanitized $headers
1264 }
1265
1266 check_header_objcc(){
1267     log check_header_objcc "$@"
1268     rm -f -- "$TMPO"
1269     header=$1
1270     shift
1271     disable_sanitized $header
1272     {
1273        echo "#include <$header>"
1274        echo "int main(void) { return 0; }"
1275     } | test_objcc && test_stat "$TMPO" && enable_sanitized $header
1276 }
1277
1278 check_apple_framework(){
1279     log check_apple_framework "$@"
1280     framework="$1"
1281     name="$(tolower $framework)"
1282     header="${framework}/${framework}.h"
1283     disable $name
1284     check_header_objcc $header &&
1285         enable $name && eval ${name}_extralibs='"-framework $framework"'
1286 }
1287
1288 check_func(){
1289     log check_func "$@"
1290     func=$1
1291     shift
1292     disable $func
1293     test_ld "cc" "$@" <<EOF && enable $func
1294 extern int $func();
1295 int main(void){ $func(); }
1296 EOF
1297 }
1298
1299 check_complexfunc(){
1300     log check_complexfunc "$@"
1301     func=$1
1302     narg=$2
1303     shift 2
1304     test $narg = 2 && args="f, g" || args="f * I"
1305     disable $func
1306     test_ld "cc" "$@" <<EOF && enable $func
1307 #include <complex.h>
1308 #include <math.h>
1309 float foo(complex float f, complex float g) { return $func($args); }
1310 int main(void){ return (int) foo; }
1311 EOF
1312 }
1313
1314 check_mathfunc(){
1315     log check_mathfunc "$@"
1316     func=$1
1317     narg=$2
1318     shift 2
1319     test $narg = 2 && args="f, g" || args="f"
1320     disable $func
1321     test_ld "cc" "$@" <<EOF && enable $func
1322 #include <math.h>
1323 float foo(float f, float g) { return $func($args); }
1324 int main(void){ return (int) foo; }
1325 EOF
1326 }
1327
1328 check_func_headers(){
1329     log check_func_headers "$@"
1330     headers=$1
1331     funcs=$2
1332     shift 2
1333     {
1334         for hdr in $headers; do
1335             print_include $hdr
1336         done
1337         echo "#include <stdint.h>"
1338         for func in $funcs; do
1339             echo "long check_$func(void) { return (long) $func; }"
1340         done
1341         echo "int main(void) { int ret = 0;"
1342         # LTO could optimize out the test functions without this
1343         for func in $funcs; do
1344             echo " ret |= ((intptr_t)check_$func) & 0xFFFF;"
1345         done
1346         echo "return ret; }"
1347     } | test_ld "cc" "$@" && enable $funcs && enable_sanitized $headers
1348 }
1349
1350 check_class_headers_cpp(){
1351     log check_class_headers_cpp "$@"
1352     headers=$1
1353     classes=$2
1354     shift 2
1355     {
1356         for hdr in $headers; do
1357             echo "#include <$hdr>"
1358         done
1359         echo "int main(void) { "
1360         i=1
1361         for class in $classes; do
1362             echo "$class obj$i;"
1363             i=$(expr $i + 1)
1364         done
1365         echo "return 0; }"
1366     } | test_ld "cxx" "$@" && enable $funcs && enable_sanitized $headers
1367 }
1368
1369 test_cpp_condition(){
1370     log test_cpp_condition "$@"
1371     header=$1
1372     condition=$2
1373     shift 2
1374     test_cpp "$@" <<EOF
1375 #include <$header>
1376 #if !($condition)
1377 #error "unsatisfied condition: $condition"
1378 #endif
1379 EOF
1380 }
1381
1382 check_cpp_condition(){
1383     log check_cpp_condition "$@"
1384     name=$1
1385     shift 1
1386     disable $name
1387     test_cpp_condition "$@" && enable $name
1388 }
1389
1390 test_cflags_cc(){
1391     log test_cflags_cc "$@"
1392     flags=$1
1393     header=$2
1394     condition=$3
1395     shift 3
1396     set -- $($cflags_filter "$flags")
1397     test_cc "$@" <<EOF
1398 #include <$header>
1399 #if !($condition)
1400 #error "unsatisfied condition: $condition"
1401 #endif
1402 EOF
1403 }
1404
1405 check_lib(){
1406     log check_lib "$@"
1407     name="$1"
1408     headers="$2"
1409     funcs="$3"
1410     shift 3
1411     disable $name
1412     check_func_headers "$headers" "$funcs" "$@" &&
1413         enable $name && eval ${name}_extralibs="\$@"
1414 }
1415
1416 check_lib_cpp(){
1417     log check_lib_cpp "$@"
1418     name="$1"
1419     headers="$2"
1420     classes="$3"
1421     shift 3
1422     disable $name
1423     check_class_headers_cpp "$headers" "$classes" "$@" &&
1424         enable $name && eval ${name}_extralibs="\$@"
1425 }
1426
1427 test_pkg_config(){
1428     log test_pkg_config "$@"
1429     name="$1"
1430     pkg_version="$2"
1431     pkg="${2%% *}"
1432     headers="$3"
1433     funcs="$4"
1434     shift 4
1435     disable $name
1436     test_cmd $pkg_config --exists --print-errors $pkg_version || return
1437     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1438     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1439     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1440         enable $name &&
1441         set_sanitized "${name}_cflags"    $pkg_cflags &&
1442         set_sanitized "${name}_extralibs" $pkg_libs
1443 }
1444
1445 check_pkg_config(){
1446     log check_pkg_config "$@"
1447     name="$1"
1448     test_pkg_config "$@" &&
1449         eval add_cflags \$${name}_cflags
1450 }
1451
1452 test_exec(){
1453     test_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1454 }
1455
1456 check_exec_crash(){
1457     log check_exec_crash "$@"
1458     code=$(cat)
1459
1460     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1461     # are safe but may not be available everywhere.  Thus we use
1462     # raise(SIGTERM) instead.  The check is run in a subshell so we
1463     # can redirect the "Terminated" message from the shell.  SIGBUS
1464     # is not defined by standard C so it is used conditionally.
1465
1466     (test_exec "$@") >> $logfile 2>&1 <<EOF
1467 #include <signal.h>
1468 static void sighandler(int sig){
1469     raise(SIGTERM);
1470 }
1471 int foo(void){
1472     $code
1473 }
1474 int (*func_ptr)(void) = foo;
1475 int main(void){
1476     signal(SIGILL, sighandler);
1477     signal(SIGFPE, sighandler);
1478     signal(SIGSEGV, sighandler);
1479 #ifdef SIGBUS
1480     signal(SIGBUS, sighandler);
1481 #endif
1482     return func_ptr();
1483 }
1484 EOF
1485 }
1486
1487 check_type(){
1488     log check_type "$@"
1489     headers=$1
1490     type=$2
1491     shift 2
1492     disable_sanitized "$type"
1493     test_code cc "$headers" "$type v" "$@" && enable_sanitized "$type"
1494 }
1495
1496 check_struct(){
1497     log check_struct "$@"
1498     headers=$1
1499     struct=$2
1500     member=$3
1501     shift 3
1502     disable_sanitized "${struct}_${member}"
1503     test_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1504         enable_sanitized "${struct}_${member}"
1505 }
1506
1507 check_builtin(){
1508     log check_builtin "$@"
1509     name=$1
1510     headers=$2
1511     builtin=$3
1512     shift 3
1513     disable "$name"
1514     test_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1515 }
1516
1517 check_compile_assert(){
1518     log check_compile_assert "$@"
1519     name=$1
1520     headers=$2
1521     condition=$3
1522     shift 3
1523     disable "$name"
1524     test_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1525 }
1526
1527 check_cc(){
1528     log check_cc "$@"
1529     name=$1
1530     shift
1531     disable "$name"
1532     test_code cc "$@" && enable "$name"
1533 }
1534
1535 require(){
1536     log require "$@"
1537     name_version="$1"
1538     name="${1%% *}"
1539     shift
1540     check_lib $name "$@" || die "ERROR: $name_version not found"
1541 }
1542
1543 require_cc(){
1544     log require_cc "$@"
1545     name="$1"
1546     check_cc "$@" || die "ERROR: $name failed"
1547 }
1548
1549 require_cpp(){
1550     name="$1"
1551     headers="$2"
1552     classes="$3"
1553     shift 3
1554     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1555 }
1556
1557 require_headers(){
1558     log require_headers "$@"
1559     headers="$1"
1560     check_headers "$@" || die "ERROR: $headers not found"
1561 }
1562
1563 require_cpp_condition(){
1564     log require_cpp_condition "$@"
1565     condition="$3"
1566     check_cpp_condition "$@" || die "ERROR: $condition not satisfied"
1567 }
1568
1569 require_pkg_config(){
1570     log require_pkg_config "$@"
1571     pkg_version="$2"
1572     check_pkg_config "$@" || die "ERROR: $pkg_version not found using pkg-config$pkg_config_fail_message"
1573 }
1574
1575 test_host_cc(){
1576     log test_host_cc "$@"
1577     cat > $TMPC
1578     log_file $TMPC
1579     test_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1580 }
1581
1582 test_host_cpp(){
1583     log test_host_cpp "$@"
1584     cat > $TMPC
1585     log_file $TMPC
1586     test_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1587 }
1588
1589 check_host_cppflags(){
1590     log check_host_cppflags "$@"
1591     test_host_cpp "$@" <<EOF && append host_cppflags "$@"
1592 #include <stdlib.h>
1593 EOF
1594 }
1595
1596 check_host_cflags(){
1597     log check_host_cflags "$@"
1598     set -- $($host_cflags_filter "$@")
1599     test_host_cc "$@" <<EOF && append host_cflags "$@"
1600 int x;
1601 EOF
1602 }
1603
1604 test_host_cpp_condition(){
1605     log test_host_cpp_condition "$@"
1606     header=$1
1607     condition=$2
1608     shift 2
1609     test_host_cpp "$@" <<EOF
1610 #include <$header>
1611 #if !($condition)
1612 #error "unsatisfied condition: $condition"
1613 #endif
1614 EOF
1615 }
1616
1617 check_host_cpp_condition(){
1618     log check_host_cpp_condition "$@"
1619     name=$1
1620     shift 1
1621     disable $name
1622     test_host_cpp_condition "$@" && enable $name
1623 }
1624
1625 cp_if_changed(){
1626     cmp -s "$1" "$2" && { test "$quiet" != "yes" && echo "$2 is unchanged"; } && return
1627     mkdir -p "$(dirname $2)"
1628     cp -f "$1" "$2"
1629 }
1630
1631 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1632 # system-dependent things.
1633
1634 AVCODEC_COMPONENTS="
1635     bsfs
1636     decoders
1637     encoders
1638     hwaccels
1639     parsers
1640 "
1641
1642 AVDEVICE_COMPONENTS="
1643     indevs
1644     outdevs
1645 "
1646
1647 AVFILTER_COMPONENTS="
1648     filters
1649 "
1650
1651 AVFORMAT_COMPONENTS="
1652     demuxers
1653     muxers
1654     protocols
1655 "
1656
1657 COMPONENT_LIST="
1658     $AVCODEC_COMPONENTS
1659     $AVDEVICE_COMPONENTS
1660     $AVFILTER_COMPONENTS
1661     $AVFORMAT_COMPONENTS
1662 "
1663
1664 EXAMPLE_LIST="
1665     avio_dir_cmd_example
1666     avio_reading_example
1667     decode_audio_example
1668     decode_video_example
1669     demuxing_decoding_example
1670     encode_audio_example
1671     encode_video_example
1672     extract_mvs_example
1673     filter_audio_example
1674     filtering_audio_example
1675     filtering_video_example
1676     http_multiclient_example
1677     hw_decode_example
1678     metadata_example
1679     muxing_example
1680     qsvdec_example
1681     remuxing_example
1682     resampling_audio_example
1683     scaling_video_example
1684     transcode_aac_example
1685     transcoding_example
1686     vaapi_encode_example
1687     vaapi_transcode_example
1688 "
1689
1690 EXTERNAL_AUTODETECT_LIBRARY_LIST="
1691     alsa
1692     appkit
1693     avfoundation
1694     bzlib
1695     coreimage
1696     iconv
1697     libxcb
1698     libxcb_shm
1699     libxcb_shape
1700     libxcb_xfixes
1701     lzma
1702     schannel
1703     sdl2
1704     securetransport
1705     sndio
1706     xlib
1707     zlib
1708 "
1709
1710 EXTERNAL_LIBRARY_GPL_LIST="
1711     avisynth
1712     frei0r
1713     libcdio
1714     libdavs2
1715     librubberband
1716     libvidstab
1717     libx264
1718     libx265
1719     libxavs
1720     libxavs2
1721     libxvid
1722 "
1723
1724 EXTERNAL_LIBRARY_NONFREE_LIST="
1725     decklink
1726     libfdk_aac
1727     openssl
1728     libtls
1729 "
1730
1731 EXTERNAL_LIBRARY_VERSION3_LIST="
1732     gmp
1733     libaribb24
1734     liblensfun
1735     libopencore_amrnb
1736     libopencore_amrwb
1737     libvmaf
1738     libvo_amrwbenc
1739     mbedtls
1740     rkmpp
1741 "
1742
1743 EXTERNAL_LIBRARY_GPLV3_LIST="
1744     libsmbclient
1745 "
1746
1747 EXTERNAL_LIBRARY_LIST="
1748     $EXTERNAL_LIBRARY_GPL_LIST
1749     $EXTERNAL_LIBRARY_NONFREE_LIST
1750     $EXTERNAL_LIBRARY_VERSION3_LIST
1751     $EXTERNAL_LIBRARY_GPLV3_LIST
1752     chromaprint
1753     gcrypt
1754     gnutls
1755     jni
1756     ladspa
1757     libaom
1758     libass
1759     libbluray
1760     libbs2b
1761     libcaca
1762     libcelt
1763     libcodec2
1764     libdav1d
1765     libdc1394
1766     libdrm
1767     libflite
1768     libfontconfig
1769     libfreetype
1770     libfribidi
1771     libgme
1772     libgsm
1773     libiec61883
1774     libilbc
1775     libjack
1776     libklvanc
1777     libkvazaar
1778     libmodplug
1779     libmp3lame
1780     libmysofa
1781     libopencv
1782     libopenh264
1783     libopenjpeg
1784     libopenmpt
1785     libopus
1786     libpulse
1787     librsvg
1788     librtmp
1789     libshine
1790     libsmbclient
1791     libsnappy
1792     libsoxr
1793     libspeex
1794     libsrt
1795     libssh
1796     libtensorflow
1797     libtesseract
1798     libtheora
1799     libtwolame
1800     libv4l2
1801     libvorbis
1802     libvpx
1803     libwavpack
1804     libwebp
1805     libxml2
1806     libzimg
1807     libzmq
1808     libzvbi
1809     lv2
1810     mediacodec
1811     openal
1812     opengl
1813     pocketsphinx
1814     vapoursynth
1815 "
1816
1817 HWACCEL_AUTODETECT_LIBRARY_LIST="
1818     amf
1819     audiotoolbox
1820     crystalhd
1821     cuda
1822     cuda_llvm
1823     cuvid
1824     d3d11va
1825     dxva2
1826     ffnvcodec
1827     nvdec
1828     nvenc
1829     vaapi
1830     vdpau
1831     videotoolbox
1832     v4l2_m2m
1833     xvmc
1834 "
1835
1836 # catchall list of things that require external libs to link
1837 EXTRALIBS_LIST="
1838     cpu_init
1839     cws2fws
1840 "
1841
1842 HWACCEL_LIBRARY_NONFREE_LIST="
1843     cuda_nvcc
1844     cuda_sdk
1845     libnpp
1846 "
1847
1848 HWACCEL_LIBRARY_LIST="
1849     $HWACCEL_LIBRARY_NONFREE_LIST
1850     libmfx
1851     mmal
1852     omx
1853     opencl
1854 "
1855
1856 DOCUMENT_LIST="
1857     doc
1858     htmlpages
1859     manpages
1860     podpages
1861     txtpages
1862 "
1863
1864 FEATURE_LIST="
1865     ftrapv
1866     gray
1867     hardcoded_tables
1868     omx_rpi
1869     runtime_cpudetect
1870     safe_bitstream_reader
1871     shared
1872     small
1873     static
1874     swscale_alpha
1875 "
1876
1877 # this list should be kept in linking order
1878 LIBRARY_LIST="
1879     avdevice
1880     avfilter
1881     swscale
1882     postproc
1883     avformat
1884     avcodec
1885     swresample
1886     avresample
1887     avutil
1888 "
1889
1890 LICENSE_LIST="
1891     gpl
1892     nonfree
1893     version3
1894 "
1895
1896 PROGRAM_LIST="
1897     ffplay
1898     ffprobe
1899     ffmpeg
1900 "
1901
1902 SUBSYSTEM_LIST="
1903     dct
1904     dwt
1905     error_resilience
1906     faan
1907     fast_unaligned
1908     fft
1909     lsp
1910     lzo
1911     mdct
1912     pixelutils
1913     network
1914     rdft
1915 "
1916
1917 # COMPONENT_LIST needs to come last to ensure correct dependency checking
1918 CONFIG_LIST="
1919     $DOCUMENT_LIST
1920     $EXAMPLE_LIST
1921     $EXTERNAL_LIBRARY_LIST
1922     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1923     $HWACCEL_LIBRARY_LIST
1924     $HWACCEL_AUTODETECT_LIBRARY_LIST
1925     $FEATURE_LIST
1926     $LICENSE_LIST
1927     $LIBRARY_LIST
1928     $PROGRAM_LIST
1929     $SUBSYSTEM_LIST
1930     autodetect
1931     fontconfig
1932     linux_perf
1933     memory_poisoning
1934     neon_clobber_test
1935     ossfuzz
1936     pic
1937     thumb
1938     valgrind_backtrace
1939     xmm_clobber_test
1940     $COMPONENT_LIST
1941 "
1942
1943 THREADS_LIST="
1944     pthreads
1945     os2threads
1946     w32threads
1947 "
1948
1949 ATOMICS_LIST="
1950     atomics_gcc
1951     atomics_suncc
1952     atomics_win32
1953 "
1954
1955 AUTODETECT_LIBS="
1956     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1957     $HWACCEL_AUTODETECT_LIBRARY_LIST
1958     $THREADS_LIST
1959 "
1960
1961 ARCH_LIST="
1962     aarch64
1963     alpha
1964     arm
1965     avr32
1966     avr32_ap
1967     avr32_uc
1968     bfin
1969     ia64
1970     m68k
1971     mips
1972     mips64
1973     parisc
1974     ppc
1975     ppc64
1976     s390
1977     sh4
1978     sparc
1979     sparc64
1980     tilegx
1981     tilepro
1982     tomi
1983     x86
1984     x86_32
1985     x86_64
1986 "
1987
1988 ARCH_EXT_LIST_ARM="
1989     armv5te
1990     armv6
1991     armv6t2
1992     armv8
1993     neon
1994     vfp
1995     vfpv3
1996     setend
1997 "
1998
1999 ARCH_EXT_LIST_MIPS="
2000     mipsfpu
2001     mips32r2
2002     mips32r5
2003     mips64r2
2004     mips32r6
2005     mips64r6
2006     mipsdsp
2007     mipsdspr2
2008     msa
2009     msa2
2010 "
2011
2012 ARCH_EXT_LIST_LOONGSON="
2013     loongson2
2014     loongson3
2015     mmi
2016 "
2017
2018 ARCH_EXT_LIST_X86_SIMD="
2019     aesni
2020     amd3dnow
2021     amd3dnowext
2022     avx
2023     avx2
2024     avx512
2025     fma3
2026     fma4
2027     mmx
2028     mmxext
2029     sse
2030     sse2
2031     sse3
2032     sse4
2033     sse42
2034     ssse3
2035     xop
2036 "
2037
2038 ARCH_EXT_LIST_PPC="
2039     altivec
2040     dcbzl
2041     ldbrx
2042     power8
2043     ppc4xx
2044     vsx
2045 "
2046
2047 ARCH_EXT_LIST_X86="
2048     $ARCH_EXT_LIST_X86_SIMD
2049     cpunop
2050     i686
2051 "
2052
2053 ARCH_EXT_LIST="
2054     $ARCH_EXT_LIST_ARM
2055     $ARCH_EXT_LIST_PPC
2056     $ARCH_EXT_LIST_X86
2057     $ARCH_EXT_LIST_MIPS
2058     $ARCH_EXT_LIST_LOONGSON
2059 "
2060
2061 ARCH_FEATURES="
2062     aligned_stack
2063     fast_64bit
2064     fast_clz
2065     fast_cmov
2066     local_aligned
2067     simd_align_16
2068     simd_align_32
2069     simd_align_64
2070 "
2071
2072 BUILTIN_LIST="
2073     atomic_cas_ptr
2074     machine_rw_barrier
2075     MemoryBarrier
2076     mm_empty
2077     rdtsc
2078     sem_timedwait
2079     sync_val_compare_and_swap
2080 "
2081 HAVE_LIST_CMDLINE="
2082     inline_asm
2083     symver
2084     x86asm
2085 "
2086
2087 HAVE_LIST_PUB="
2088     bigendian
2089     fast_unaligned
2090 "
2091
2092 HEADERS_LIST="
2093     arpa_inet_h
2094     asm_types_h
2095     cdio_paranoia_h
2096     cdio_paranoia_paranoia_h
2097     cuda_h
2098     dispatch_dispatch_h
2099     dev_bktr_ioctl_bt848_h
2100     dev_bktr_ioctl_meteor_h
2101     dev_ic_bt8xx_h
2102     dev_video_bktr_ioctl_bt848_h
2103     dev_video_meteor_ioctl_meteor_h
2104     direct_h
2105     dirent_h
2106     dxgidebug_h
2107     dxva_h
2108     ES2_gl_h
2109     gsm_h
2110     io_h
2111     linux_perf_event_h
2112     machine_ioctl_bt848_h
2113     machine_ioctl_meteor_h
2114     malloc_h
2115     opencv2_core_core_c_h
2116     OpenGL_gl3_h
2117     poll_h
2118     sys_param_h
2119     sys_resource_h
2120     sys_select_h
2121     sys_soundcard_h
2122     sys_time_h
2123     sys_un_h
2124     sys_videoio_h
2125     termios_h
2126     udplite_h
2127     unistd_h
2128     valgrind_valgrind_h
2129     windows_h
2130     winsock2_h
2131 "
2132
2133 INTRINSICS_LIST="
2134     intrinsics_neon
2135 "
2136
2137 COMPLEX_FUNCS="
2138     cabs
2139     cexp
2140 "
2141
2142 MATH_FUNCS="
2143     atanf
2144     atan2f
2145     cbrt
2146     cbrtf
2147     copysign
2148     cosf
2149     erf
2150     exp2
2151     exp2f
2152     expf
2153     hypot
2154     isfinite
2155     isinf
2156     isnan
2157     ldexpf
2158     llrint
2159     llrintf
2160     log2
2161     log2f
2162     log10f
2163     lrint
2164     lrintf
2165     powf
2166     rint
2167     round
2168     roundf
2169     sinf
2170     trunc
2171     truncf
2172 "
2173
2174 SYSTEM_FEATURES="
2175     dos_paths
2176     libc_msvcrt
2177     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
2178     section_data_rel_ro
2179     threads
2180     uwp
2181     winrt
2182 "
2183
2184 SYSTEM_FUNCS="
2185     access
2186     aligned_malloc
2187     arc4random
2188     clock_gettime
2189     closesocket
2190     CommandLineToArgvW
2191     fcntl
2192     getaddrinfo
2193     gethrtime
2194     getopt
2195     GetProcessAffinityMask
2196     GetProcessMemoryInfo
2197     GetProcessTimes
2198     getrusage
2199     GetSystemTimeAsFileTime
2200     gettimeofday
2201     glob
2202     glXGetProcAddress
2203     gmtime_r
2204     inet_aton
2205     isatty
2206     kbhit
2207     localtime_r
2208     lstat
2209     lzo1x_999_compress
2210     mach_absolute_time
2211     MapViewOfFile
2212     memalign
2213     mkstemp
2214     mmap
2215     mprotect
2216     nanosleep
2217     PeekNamedPipe
2218     posix_memalign
2219     pthread_cancel
2220     sched_getaffinity
2221     SecItemImport
2222     SetConsoleTextAttribute
2223     SetConsoleCtrlHandler
2224     setmode
2225     setrlimit
2226     Sleep
2227     strerror_r
2228     sysconf
2229     sysctl
2230     usleep
2231     UTGetOSTypeFromString
2232     VirtualAlloc
2233     wglGetProcAddress
2234 "
2235
2236 SYSTEM_LIBRARIES="
2237     bcrypt
2238     vaapi_drm
2239     vaapi_x11
2240     vdpau_x11
2241 "
2242
2243 TOOLCHAIN_FEATURES="
2244     as_arch_directive
2245     as_dn_directive
2246     as_fpu_directive
2247     as_func
2248     as_object_arch
2249     asm_mod_q
2250     blocks_extension
2251     ebp_available
2252     ebx_available
2253     gnu_as
2254     gnu_windres
2255     ibm_asm
2256     inline_asm_direct_symbol_refs
2257     inline_asm_labels
2258     inline_asm_nonlocal_labels
2259     pragma_deprecated
2260     rsync_contimeout
2261     symver_asm_label
2262     symver_gnu_asm
2263     vfp_args
2264     xform_asm
2265     xmm_clobbers
2266 "
2267
2268 TYPES_LIST="
2269     kCMVideoCodecType_HEVC
2270     kCVPixelFormatType_420YpCbCr10BiPlanarVideoRange
2271     kCVImageBufferTransferFunction_SMPTE_ST_2084_PQ
2272     kCVImageBufferTransferFunction_ITU_R_2100_HLG
2273     kCVImageBufferTransferFunction_Linear
2274     socklen_t
2275     struct_addrinfo
2276     struct_group_source_req
2277     struct_ip_mreq_source
2278     struct_ipv6_mreq
2279     struct_msghdr_msg_flags
2280     struct_pollfd
2281     struct_rusage_ru_maxrss
2282     struct_sctp_event_subscribe
2283     struct_sockaddr_in6
2284     struct_sockaddr_sa_len
2285     struct_sockaddr_storage
2286     struct_stat_st_mtim_tv_nsec
2287     struct_v4l2_frmivalenum_discrete
2288 "
2289
2290 HAVE_LIST="
2291     $ARCH_EXT_LIST
2292     $(add_suffix _external $ARCH_EXT_LIST)
2293     $(add_suffix _inline   $ARCH_EXT_LIST)
2294     $ARCH_FEATURES
2295     $BUILTIN_LIST
2296     $COMPLEX_FUNCS
2297     $HAVE_LIST_CMDLINE
2298     $HAVE_LIST_PUB
2299     $HEADERS_LIST
2300     $INTRINSICS_LIST
2301     $MATH_FUNCS
2302     $SYSTEM_FEATURES
2303     $SYSTEM_FUNCS
2304     $SYSTEM_LIBRARIES
2305     $THREADS_LIST
2306     $TOOLCHAIN_FEATURES
2307     $TYPES_LIST
2308     makeinfo
2309     makeinfo_html
2310     opencl_d3d11
2311     opencl_drm_arm
2312     opencl_drm_beignet
2313     opencl_dxva2
2314     opencl_vaapi_beignet
2315     opencl_vaapi_intel_media
2316     perl
2317     pod2man
2318     texi2html
2319 "
2320
2321 # options emitted with CONFIG_ prefix but not available on the command line
2322 CONFIG_EXTRA="
2323     aandcttables
2324     ac3dsp
2325     adts_header
2326     audio_frame_queue
2327     audiodsp
2328     blockdsp
2329     bswapdsp
2330     cabac
2331     cbs
2332     cbs_av1
2333     cbs_h264
2334     cbs_h265
2335     cbs_jpeg
2336     cbs_mpeg2
2337     cbs_vp9
2338     dirac_parse
2339     dnn
2340     dvprofile
2341     exif
2342     faandct
2343     faanidct
2344     fdctdsp
2345     flacdsp
2346     fmtconvert
2347     frame_thread_encoder
2348     g722dsp
2349     golomb
2350     gplv3
2351     h263dsp
2352     h264chroma
2353     h264dsp
2354     h264parse
2355     h264pred
2356     h264qpel
2357     hevcparse
2358     hpeldsp
2359     huffman
2360     huffyuvdsp
2361     huffyuvencdsp
2362     idctdsp
2363     iirfilter
2364     mdct15
2365     intrax8
2366     iso_media
2367     ividsp
2368     jpegtables
2369     lgplv3
2370     libx262
2371     llauddsp
2372     llviddsp
2373     llvidencdsp
2374     lpc
2375     lzf
2376     me_cmp
2377     mpeg_er
2378     mpegaudio
2379     mpegaudiodsp
2380     mpegaudioheader
2381     mpegvideo
2382     mpegvideoenc
2383     mss34dsp
2384     pixblockdsp
2385     qpeldsp
2386     qsv
2387     qsvdec
2388     qsvenc
2389     qsvvpp
2390     rangecoder
2391     riffdec
2392     riffenc
2393     rtpdec
2394     rtpenc_chain
2395     rv34dsp
2396     scene_sad
2397     sinewin
2398     snappy
2399     srtp
2400     startcode
2401     texturedsp
2402     texturedspenc
2403     tpeldsp
2404     vaapi_1
2405     vaapi_encode
2406     vc1dsp
2407     videodsp
2408     vp3dsp
2409     vp56dsp
2410     vp8dsp
2411     wma_freqs
2412     wmv2dsp
2413 "
2414
2415 CMDLINE_SELECT="
2416     $ARCH_EXT_LIST
2417     $CONFIG_LIST
2418     $HAVE_LIST_CMDLINE
2419     $THREADS_LIST
2420     asm
2421     cross_compile
2422     debug
2423     extra_warnings
2424     logging
2425     lto
2426     optimizations
2427     rpath
2428     stripping
2429 "
2430
2431 PATHS_LIST="
2432     bindir
2433     datadir
2434     docdir
2435     incdir
2436     libdir
2437     mandir
2438     pkgconfigdir
2439     prefix
2440     shlibdir
2441     install_name_dir
2442 "
2443
2444 CMDLINE_SET="
2445     $PATHS_LIST
2446     ar
2447     arch
2448     as
2449     assert_level
2450     build_suffix
2451     cc
2452     objcc
2453     cpu
2454     cross_prefix
2455     custom_allocator
2456     cxx
2457     dep_cc
2458     doxygen
2459     env
2460     extra_version
2461     gas
2462     host_cc
2463     host_cflags
2464     host_extralibs
2465     host_ld
2466     host_ldflags
2467     host_os
2468     ignore_tests
2469     install
2470     ld
2471     ln_s
2472     logfile
2473     malloc_prefix
2474     nm
2475     optflags
2476     nvcc
2477     nvccflags
2478     pkg_config
2479     pkg_config_flags
2480     progs_suffix
2481     random_seed
2482     ranlib
2483     samples
2484     strip
2485     sws_max_filter_size
2486     sysinclude
2487     sysroot
2488     target_exec
2489     target_os
2490     target_path
2491     target_samples
2492     tempprefix
2493     toolchain
2494     valgrind
2495     windres
2496     x86asmexe
2497 "
2498
2499 CMDLINE_APPEND="
2500     extra_cflags
2501     extra_cxxflags
2502     extra_objcflags
2503     host_cppflags
2504 "
2505
2506 # code dependency declarations
2507
2508 # architecture extensions
2509
2510 armv5te_deps="arm"
2511 armv6_deps="arm"
2512 armv6t2_deps="arm"
2513 armv8_deps="aarch64"
2514 neon_deps_any="aarch64 arm"
2515 intrinsics_neon_deps="neon"
2516 vfp_deps_any="aarch64 arm"
2517 vfpv3_deps="vfp"
2518 setend_deps="arm"
2519
2520 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2521
2522 altivec_deps="ppc"
2523 dcbzl_deps="ppc"
2524 ldbrx_deps="ppc"
2525 ppc4xx_deps="ppc"
2526 vsx_deps="altivec"
2527 power8_deps="vsx"
2528
2529 loongson2_deps="mips"
2530 loongson3_deps="mips"
2531 mips32r2_deps="mips"
2532 mips32r5_deps="mips"
2533 mips32r6_deps="mips"
2534 mips64r2_deps="mips"
2535 mips64r6_deps="mips"
2536 mipsfpu_deps="mips"
2537 mipsdsp_deps="mips"
2538 mipsdspr2_deps="mips"
2539 mmi_deps="mips"
2540 msa_deps="mipsfpu"
2541 msa2_deps="msa"
2542
2543 cpunop_deps="i686"
2544 x86_64_select="i686"
2545 x86_64_suggest="fast_cmov"
2546
2547 amd3dnow_deps="mmx"
2548 amd3dnowext_deps="amd3dnow"
2549 i686_deps="x86"
2550 mmx_deps="x86"
2551 mmxext_deps="mmx"
2552 sse_deps="mmxext"
2553 sse2_deps="sse"
2554 sse3_deps="sse2"
2555 ssse3_deps="sse3"
2556 sse4_deps="ssse3"
2557 sse42_deps="sse4"
2558 aesni_deps="sse42"
2559 avx_deps="sse42"
2560 xop_deps="avx"
2561 fma3_deps="avx"
2562 fma4_deps="avx"
2563 avx2_deps="avx"
2564 avx512_deps="avx2"
2565
2566 mmx_external_deps="x86asm"
2567 mmx_inline_deps="inline_asm x86"
2568 mmx_suggest="mmx_external mmx_inline"
2569
2570 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2571     eval dep=\$${ext}_deps
2572     eval ${ext}_external_deps='"${dep}_external"'
2573     eval ${ext}_inline_deps='"${dep}_inline"'
2574     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2575 done
2576
2577 aligned_stack_if_any="aarch64 ppc x86"
2578 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2579 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2580 fast_unaligned_if_any="aarch64 ppc x86"
2581 simd_align_16_if_any="altivec neon sse"
2582 simd_align_32_if_any="avx"
2583 simd_align_64_if_any="avx512"
2584
2585 # system capabilities
2586 linux_perf_deps="linux_perf_event_h"
2587 symver_if_any="symver_asm_label symver_gnu_asm"
2588 valgrind_backtrace_conflict="optimizations"
2589 valgrind_backtrace_deps="valgrind_valgrind_h"
2590
2591 # threading support
2592 atomics_gcc_if="sync_val_compare_and_swap"
2593 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2594 atomics_win32_if="MemoryBarrier"
2595 atomics_native_if_any="$ATOMICS_LIST"
2596 w32threads_deps="atomics_native"
2597 threads_if_any="$THREADS_LIST"
2598
2599 # subsystems
2600 cbs_av1_select="cbs"
2601 cbs_h264_select="cbs"
2602 cbs_h265_select="cbs"
2603 cbs_jpeg_select="cbs"
2604 cbs_mpeg2_select="cbs"
2605 cbs_vp9_select="cbs"
2606 dct_select="rdft"
2607 dirac_parse_select="golomb"
2608 dnn_suggest="libtensorflow"
2609 error_resilience_select="me_cmp"
2610 faandct_deps="faan"
2611 faandct_select="fdctdsp"
2612 faanidct_deps="faan"
2613 faanidct_select="idctdsp"
2614 h264dsp_select="startcode"
2615 hevcparse_select="golomb"
2616 frame_thread_encoder_deps="encoders threads"
2617 intrax8_select="blockdsp idctdsp"
2618 mdct_select="fft"
2619 mdct15_select="fft"
2620 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2621 mpeg_er_select="error_resilience"
2622 mpegaudio_select="mpegaudiodsp mpegaudioheader"
2623 mpegaudiodsp_select="dct"
2624 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2625 mpegvideoenc_select="aandcttables me_cmp mpegvideo pixblockdsp qpeldsp"
2626 vc1dsp_select="h264chroma qpeldsp startcode"
2627 rdft_select="fft"
2628
2629 # decoders / encoders
2630 aac_decoder_select="adts_header mdct15 mdct sinewin"
2631 aac_fixed_decoder_select="adts_header mdct sinewin"
2632 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2633 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2634 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2635 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2636 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2637 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2638 adpcm_g722_decoder_select="g722dsp"
2639 adpcm_g722_encoder_select="g722dsp"
2640 aic_decoder_select="golomb idctdsp"
2641 alac_encoder_select="lpc"
2642 als_decoder_select="bswapdsp"
2643 amrnb_decoder_select="lsp"
2644 amrwb_decoder_select="lsp"
2645 amv_decoder_select="sp5x_decoder exif"
2646 amv_encoder_select="jpegtables mpegvideoenc"
2647 ape_decoder_select="bswapdsp llauddsp"
2648 apng_decoder_deps="zlib"
2649 apng_encoder_deps="zlib"
2650 apng_encoder_select="llvidencdsp"
2651 aptx_decoder_select="audio_frame_queue"
2652 aptx_encoder_select="audio_frame_queue"
2653 aptx_hd_decoder_select="audio_frame_queue"
2654 aptx_hd_encoder_select="audio_frame_queue"
2655 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2656 asv1_encoder_select="aandcttables bswapdsp fdctdsp pixblockdsp"
2657 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2658 asv2_encoder_select="aandcttables bswapdsp fdctdsp pixblockdsp"
2659 atrac1_decoder_select="mdct sinewin"
2660 atrac3_decoder_select="mdct"
2661 atrac3p_decoder_select="mdct sinewin"
2662 atrac9_decoder_select="mdct"
2663 avrn_decoder_select="exif jpegtables"
2664 bink_decoder_select="blockdsp hpeldsp"
2665 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2666 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2667 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2668 clearvideo_decoder_select="idctdsp"
2669 cllc_decoder_select="bswapdsp"
2670 comfortnoise_encoder_select="lpc"
2671 cook_decoder_select="audiodsp mdct sinewin"
2672 cscd_decoder_select="lzo"
2673 cscd_decoder_suggest="zlib"
2674 dca_decoder_select="mdct"
2675 dds_decoder_select="texturedsp"
2676 dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
2677 dnxhd_decoder_select="blockdsp idctdsp"
2678 dnxhd_encoder_select="blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2679 dolby_e_decoder_select="mdct"
2680 dvvideo_decoder_select="dvprofile idctdsp"
2681 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2682 dxa_decoder_deps="zlib"
2683 dxv_decoder_select="lzf texturedsp"
2684 eac3_decoder_select="ac3_decoder"
2685 eac3_encoder_select="ac3_encoder"
2686 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2687 eatgq_decoder_select="aandcttables"
2688 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2689 exr_decoder_deps="zlib"
2690 ffv1_decoder_select="rangecoder"
2691 ffv1_encoder_select="rangecoder"
2692 ffvhuff_decoder_select="huffyuv_decoder"
2693 ffvhuff_encoder_select="huffyuv_encoder"
2694 fic_decoder_select="golomb"
2695 flac_decoder_select="flacdsp"
2696 flac_encoder_select="bswapdsp flacdsp lpc"
2697 flashsv2_decoder_deps="zlib"
2698 flashsv2_encoder_deps="zlib"
2699 flashsv_decoder_deps="zlib"
2700 flashsv_encoder_deps="zlib"
2701 flv_decoder_select="h263_decoder"
2702 flv_encoder_select="h263_encoder"
2703 fourxm_decoder_select="blockdsp bswapdsp"
2704 fraps_decoder_select="bswapdsp huffman"
2705 g2m_decoder_deps="zlib"
2706 g2m_decoder_select="blockdsp idctdsp jpegtables"
2707 g729_decoder_select="audiodsp"
2708 h261_decoder_select="mpegvideo"
2709 h261_encoder_select="mpegvideoenc"
2710 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2711 h263_encoder_select="h263dsp mpegvideoenc"
2712 h263i_decoder_select="h263_decoder"
2713 h263p_decoder_select="h263_decoder"
2714 h263p_encoder_select="h263_encoder"
2715 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
2716 h264_decoder_suggest="error_resilience"
2717 hap_decoder_select="snappy texturedsp"
2718 hap_encoder_deps="libsnappy"
2719 hap_encoder_select="texturedspenc"
2720 hevc_decoder_select="bswapdsp cabac golomb hevcparse videodsp"
2721 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2722 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llvidencdsp"
2723 hymt_decoder_select="huffyuv_decoder"
2724 iac_decoder_select="imc_decoder"
2725 imc_decoder_select="bswapdsp fft mdct sinewin"
2726 indeo3_decoder_select="hpeldsp"
2727 indeo4_decoder_select="ividsp"
2728 indeo5_decoder_select="ividsp"
2729 interplay_video_decoder_select="hpeldsp"
2730 jpegls_decoder_select="mjpeg_decoder"
2731 jv_decoder_select="blockdsp"
2732 lagarith_decoder_select="llviddsp"
2733 ljpeg_encoder_select="idctdsp jpegtables mpegvideoenc"
2734 lscr_decoder_deps="zlib"
2735 magicyuv_decoder_select="llviddsp"
2736 magicyuv_encoder_select="llvidencdsp"
2737 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2738 metasound_decoder_select="lsp mdct sinewin"
2739 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2740 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2741 mjpeg_encoder_select="jpegtables mpegvideoenc"
2742 mjpegb_decoder_select="mjpeg_decoder"
2743 mlp_decoder_select="mlp_parser"
2744 mlp_encoder_select="lpc audio_frame_queue"
2745 motionpixels_decoder_select="bswapdsp"
2746 mp1_decoder_select="mpegaudio"
2747 mp1float_decoder_select="mpegaudio"
2748 mp2_decoder_select="mpegaudio"
2749 mp2float_decoder_select="mpegaudio"
2750 mp3_decoder_select="mpegaudio"
2751 mp3adu_decoder_select="mpegaudio"
2752 mp3adufloat_decoder_select="mpegaudio"
2753 mp3float_decoder_select="mpegaudio"
2754 mp3on4_decoder_select="mpegaudio"
2755 mp3on4float_decoder_select="mpegaudio"
2756 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2757 mpc8_decoder_select="mpegaudiodsp"
2758 mpegvideo_decoder_select="mpegvideo"
2759 mpeg1video_decoder_select="mpegvideo"
2760 mpeg1video_encoder_select="mpegvideoenc h263dsp"
2761 mpeg2video_decoder_select="mpegvideo"
2762 mpeg2video_encoder_select="mpegvideoenc h263dsp"
2763 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2764 mpeg4_encoder_select="h263_encoder"
2765 msa1_decoder_select="mss34dsp"
2766 mscc_decoder_deps="zlib"
2767 msmpeg4v1_decoder_select="h263_decoder"
2768 msmpeg4v2_decoder_select="h263_decoder"
2769 msmpeg4v2_encoder_select="h263_encoder"
2770 msmpeg4v3_decoder_select="h263_decoder"
2771 msmpeg4v3_encoder_select="h263_encoder"
2772 mss2_decoder_select="mpegvideo qpeldsp vc1_decoder"
2773 mts2_decoder_select="mss34dsp"
2774 mwsc_decoder_deps="zlib"
2775 mxpeg_decoder_select="mjpeg_decoder"
2776 nellymoser_decoder_select="mdct sinewin"
2777 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2778 nuv_decoder_select="idctdsp lzo"
2779 on2avc_decoder_select="mdct"
2780 opus_decoder_deps="swresample"
2781 opus_decoder_select="mdct15"
2782 opus_encoder_select="audio_frame_queue mdct15"
2783 png_decoder_deps="zlib"
2784 png_encoder_deps="zlib"
2785 png_encoder_select="llvidencdsp"
2786 prores_decoder_select="blockdsp idctdsp"
2787 prores_encoder_select="fdctdsp"
2788 qcelp_decoder_select="lsp"
2789 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2790 ra_144_decoder_select="audiodsp"
2791 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2792 ralf_decoder_select="golomb"
2793 rasc_decoder_deps="zlib"
2794 rawvideo_decoder_select="bswapdsp"
2795 rscc_decoder_deps="zlib"
2796 rtjpeg_decoder_select="me_cmp"
2797 rv10_decoder_select="h263_decoder"
2798 rv10_encoder_select="h263_encoder"
2799 rv20_decoder_select="h263_decoder"
2800 rv20_encoder_select="h263_encoder"
2801 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2802 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2803 screenpresso_decoder_deps="zlib"
2804 shorten_decoder_select="bswapdsp"
2805 sipr_decoder_select="lsp"
2806 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2807 snow_encoder_select="dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2808 sonic_decoder_select="golomb rangecoder"
2809 sonic_encoder_select="golomb rangecoder"
2810 sonic_ls_encoder_select="golomb rangecoder"
2811 sp5x_decoder_select="mjpeg_decoder"
2812 speedhq_decoder_select="mpegvideo"
2813 srgc_decoder_deps="zlib"
2814 svq1_decoder_select="hpeldsp"
2815 svq1_encoder_select="hpeldsp me_cmp mpegvideoenc"
2816 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2817 svq3_decoder_suggest="zlib"
2818 tak_decoder_select="audiodsp"
2819 tdsc_decoder_deps="zlib"
2820 tdsc_decoder_select="mjpeg_decoder"
2821 theora_decoder_select="vp3_decoder"
2822 thp_decoder_select="mjpeg_decoder"
2823 tiff_decoder_suggest="zlib lzma"
2824 tiff_encoder_suggest="zlib"
2825 truehd_decoder_select="mlp_parser"
2826 truehd_encoder_select="lpc audio_frame_queue"
2827 truemotion2_decoder_select="bswapdsp"
2828 truespeech_decoder_select="bswapdsp"
2829 tscc_decoder_deps="zlib"
2830 twinvq_decoder_select="mdct lsp sinewin"
2831 txd_decoder_select="texturedsp"
2832 utvideo_decoder_select="bswapdsp llviddsp"
2833 utvideo_encoder_select="bswapdsp huffman llvidencdsp"
2834 vble_decoder_select="llviddsp"
2835 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 mpegvideo vc1dsp"
2836 vc1image_decoder_select="vc1_decoder"
2837 vorbis_decoder_select="mdct"
2838 vorbis_encoder_select="audio_frame_queue mdct"
2839 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2840 vp4_decoder_select="vp3_decoder"
2841 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2842 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2843 vp6a_decoder_select="vp6_decoder"
2844 vp6f_decoder_select="vp6_decoder"
2845 vp7_decoder_select="h264pred videodsp vp8dsp"
2846 vp8_decoder_select="h264pred videodsp vp8dsp"
2847 vp9_decoder_select="videodsp vp9_parser vp9_superframe_split_bsf"
2848 wcmv_decoder_deps="zlib"
2849 webp_decoder_select="vp8_decoder exif"
2850 wmalossless_decoder_select="llauddsp"
2851 wmapro_decoder_select="mdct sinewin wma_freqs"
2852 wmav1_decoder_select="mdct sinewin wma_freqs"
2853 wmav1_encoder_select="mdct sinewin wma_freqs"
2854 wmav2_decoder_select="mdct sinewin wma_freqs"
2855 wmav2_encoder_select="mdct sinewin wma_freqs"
2856 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2857 wmv1_decoder_select="h263_decoder"
2858 wmv1_encoder_select="h263_encoder"
2859 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2860 wmv2_encoder_select="h263_encoder wmv2dsp"
2861 wmv3_decoder_select="vc1_decoder"
2862 wmv3image_decoder_select="wmv3_decoder"
2863 xma1_decoder_select="wmapro_decoder"
2864 xma2_decoder_select="wmapro_decoder"
2865 zerocodec_decoder_deps="zlib"
2866 zlib_decoder_deps="zlib"
2867 zlib_encoder_deps="zlib"
2868 zmbv_decoder_deps="zlib"
2869 zmbv_encoder_deps="zlib"
2870
2871 # hardware accelerators
2872 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2873 cuda_deps="ffnvcodec"
2874 cuvid_deps="ffnvcodec"
2875 d3d11va_deps="dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2876 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode ole32 user32"
2877 ffnvcodec_deps_any="libdl LoadLibrary"
2878 nvdec_deps="ffnvcodec"
2879 vaapi_x11_deps="xlib"
2880 videotoolbox_hwaccel_deps="videotoolbox pthreads"
2881 videotoolbox_hwaccel_extralibs="-framework QuartzCore"
2882 xvmc_deps="X11_extensions_XvMClib_h"
2883
2884 h263_vaapi_hwaccel_deps="vaapi"
2885 h263_vaapi_hwaccel_select="h263_decoder"
2886 h263_videotoolbox_hwaccel_deps="videotoolbox"
2887 h263_videotoolbox_hwaccel_select="h263_decoder"
2888 h264_d3d11va_hwaccel_deps="d3d11va"
2889 h264_d3d11va_hwaccel_select="h264_decoder"
2890 h264_d3d11va2_hwaccel_deps="d3d11va"
2891 h264_d3d11va2_hwaccel_select="h264_decoder"
2892 h264_dxva2_hwaccel_deps="dxva2"
2893 h264_dxva2_hwaccel_select="h264_decoder"
2894 h264_nvdec_hwaccel_deps="nvdec"
2895 h264_nvdec_hwaccel_select="h264_decoder"
2896 h264_vaapi_hwaccel_deps="vaapi"
2897 h264_vaapi_hwaccel_select="h264_decoder"
2898 h264_vdpau_hwaccel_deps="vdpau"
2899 h264_vdpau_hwaccel_select="h264_decoder"
2900 h264_videotoolbox_hwaccel_deps="videotoolbox"
2901 h264_videotoolbox_hwaccel_select="h264_decoder"
2902 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2903 hevc_d3d11va_hwaccel_select="hevc_decoder"
2904 hevc_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2905 hevc_d3d11va2_hwaccel_select="hevc_decoder"
2906 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2907 hevc_dxva2_hwaccel_select="hevc_decoder"
2908 hevc_nvdec_hwaccel_deps="nvdec"
2909 hevc_nvdec_hwaccel_select="hevc_decoder"
2910 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2911 hevc_vaapi_hwaccel_select="hevc_decoder"
2912 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2913 hevc_vdpau_hwaccel_select="hevc_decoder"
2914 hevc_videotoolbox_hwaccel_deps="videotoolbox"
2915 hevc_videotoolbox_hwaccel_select="hevc_decoder"
2916 mjpeg_nvdec_hwaccel_deps="nvdec"
2917 mjpeg_nvdec_hwaccel_select="mjpeg_decoder"
2918 mjpeg_vaapi_hwaccel_deps="vaapi"
2919 mjpeg_vaapi_hwaccel_select="mjpeg_decoder"
2920 mpeg_xvmc_hwaccel_deps="xvmc"
2921 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2922 mpeg1_nvdec_hwaccel_deps="nvdec"
2923 mpeg1_nvdec_hwaccel_select="mpeg1video_decoder"
2924 mpeg1_vdpau_hwaccel_deps="vdpau"
2925 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2926 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2927 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2928 mpeg1_xvmc_hwaccel_deps="xvmc"
2929 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2930 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2931 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2932 mpeg2_d3d11va2_hwaccel_deps="d3d11va"
2933 mpeg2_d3d11va2_hwaccel_select="mpeg2video_decoder"
2934 mpeg2_dxva2_hwaccel_deps="dxva2"
2935 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2936 mpeg2_nvdec_hwaccel_deps="nvdec"
2937 mpeg2_nvdec_hwaccel_select="mpeg2video_decoder"
2938 mpeg2_vaapi_hwaccel_deps="vaapi"
2939 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2940 mpeg2_vdpau_hwaccel_deps="vdpau"
2941 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2942 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2943 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2944 mpeg2_xvmc_hwaccel_deps="xvmc"
2945 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2946 mpeg4_nvdec_hwaccel_deps="nvdec"
2947 mpeg4_nvdec_hwaccel_select="mpeg4_decoder"
2948 mpeg4_vaapi_hwaccel_deps="vaapi"
2949 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2950 mpeg4_vdpau_hwaccel_deps="vdpau"
2951 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2952 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2953 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2954 vc1_d3d11va_hwaccel_deps="d3d11va"
2955 vc1_d3d11va_hwaccel_select="vc1_decoder"
2956 vc1_d3d11va2_hwaccel_deps="d3d11va"
2957 vc1_d3d11va2_hwaccel_select="vc1_decoder"
2958 vc1_dxva2_hwaccel_deps="dxva2"
2959 vc1_dxva2_hwaccel_select="vc1_decoder"
2960 vc1_nvdec_hwaccel_deps="nvdec"
2961 vc1_nvdec_hwaccel_select="vc1_decoder"
2962 vc1_vaapi_hwaccel_deps="vaapi"
2963 vc1_vaapi_hwaccel_select="vc1_decoder"
2964 vc1_vdpau_hwaccel_deps="vdpau"
2965 vc1_vdpau_hwaccel_select="vc1_decoder"
2966 vp8_nvdec_hwaccel_deps="nvdec"
2967 vp8_nvdec_hwaccel_select="vp8_decoder"
2968 vp8_vaapi_hwaccel_deps="vaapi"
2969 vp8_vaapi_hwaccel_select="vp8_decoder"
2970 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2971 vp9_d3d11va_hwaccel_select="vp9_decoder"
2972 vp9_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2973 vp9_d3d11va2_hwaccel_select="vp9_decoder"
2974 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
2975 vp9_dxva2_hwaccel_select="vp9_decoder"
2976 vp9_nvdec_hwaccel_deps="nvdec"
2977 vp9_nvdec_hwaccel_select="vp9_decoder"
2978 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9_bit_depth"
2979 vp9_vaapi_hwaccel_select="vp9_decoder"
2980 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2981 wmv3_d3d11va2_hwaccel_select="vc1_d3d11va2_hwaccel"
2982 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2983 wmv3_nvdec_hwaccel_select="vc1_nvdec_hwaccel"
2984 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2985 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2986
2987 # hardware-accelerated codecs
2988 omx_deps="libdl pthreads"
2989 omx_rpi_select="omx"
2990 qsv_deps="libmfx"
2991 qsvdec_select="qsv"
2992 qsvenc_select="qsv"
2993 qsvvpp_select="qsv"
2994 vaapi_encode_deps="vaapi"
2995 v4l2_m2m_deps="linux_videodev2_h sem_timedwait"
2996
2997 hwupload_cuda_filter_deps="ffnvcodec"
2998 scale_npp_filter_deps="ffnvcodec libnpp"
2999 scale_cuda_filter_deps="ffnvcodec"
3000 scale_cuda_filter_deps_any="cuda_nvcc cuda_llvm"
3001 thumbnail_cuda_filter_deps="ffnvcodec"
3002 thumbnail_cuda_filter_deps_any="cuda_nvcc cuda_llvm"
3003 transpose_npp_filter_deps="ffnvcodec libnpp"
3004
3005 amf_deps_any="libdl LoadLibrary"
3006 nvenc_deps="ffnvcodec"
3007 nvenc_deps_any="libdl LoadLibrary"
3008 nvenc_encoder_deps="nvenc"
3009
3010 h263_v4l2m2m_decoder_deps="v4l2_m2m h263_v4l2_m2m"
3011 h263_v4l2m2m_encoder_deps="v4l2_m2m h263_v4l2_m2m"
3012 h264_amf_encoder_deps="amf"
3013 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
3014 h264_cuvid_decoder_deps="cuvid"
3015 h264_cuvid_decoder_select="h264_mp4toannexb_bsf"
3016 h264_mediacodec_decoder_deps="mediacodec"
3017 h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
3018 h264_mmal_decoder_deps="mmal"
3019 h264_nvenc_encoder_deps="nvenc"
3020 h264_omx_encoder_deps="omx"
3021 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec"
3022 h264_qsv_encoder_select="qsvenc"
3023 h264_rkmpp_decoder_deps="rkmpp"
3024 h264_rkmpp_decoder_select="h264_mp4toannexb_bsf"
3025 h264_vaapi_encoder_select="cbs_h264 vaapi_encode"
3026 h264_v4l2m2m_decoder_deps="v4l2_m2m h264_v4l2_m2m"
3027 h264_v4l2m2m_decoder_select="h264_mp4toannexb_bsf"
3028 h264_v4l2m2m_encoder_deps="v4l2_m2m h264_v4l2_m2m"
3029 hevc_amf_encoder_deps="amf"
3030 hevc_cuvid_decoder_deps="cuvid"
3031 hevc_cuvid_decoder_select="hevc_mp4toannexb_bsf"
3032 hevc_mediacodec_decoder_deps="mediacodec"
3033 hevc_mediacodec_decoder_select="hevc_mp4toannexb_bsf hevc_parser"
3034 hevc_nvenc_encoder_deps="nvenc"
3035 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec"
3036 hevc_qsv_encoder_select="hevcparse qsvenc"
3037 hevc_rkmpp_decoder_deps="rkmpp"
3038 hevc_rkmpp_decoder_select="hevc_mp4toannexb_bsf"
3039 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
3040 hevc_vaapi_encoder_select="cbs_h265 vaapi_encode"
3041 hevc_v4l2m2m_decoder_deps="v4l2_m2m hevc_v4l2_m2m"
3042 hevc_v4l2m2m_decoder_select="hevc_mp4toannexb_bsf"
3043 hevc_v4l2m2m_encoder_deps="v4l2_m2m hevc_v4l2_m2m"
3044 mjpeg_cuvid_decoder_deps="cuvid"
3045 mjpeg_qsv_encoder_deps="libmfx"
3046 mjpeg_qsv_encoder_select="qsvenc"
3047 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
3048 mjpeg_vaapi_encoder_select="cbs_jpeg jpegtables vaapi_encode"
3049 mpeg1_cuvid_decoder_deps="cuvid"
3050 mpeg1_v4l2m2m_decoder_deps="v4l2_m2m mpeg1_v4l2_m2m"
3051 mpeg2_crystalhd_decoder_select="crystalhd"
3052 mpeg2_cuvid_decoder_deps="cuvid"
3053 mpeg2_mmal_decoder_deps="mmal"
3054 mpeg2_mediacodec_decoder_deps="mediacodec"
3055 mpeg2_qsv_decoder_select="qsvdec mpegvideo_parser"
3056 mpeg2_qsv_encoder_select="qsvenc"
3057 mpeg2_vaapi_encoder_select="cbs_mpeg2 vaapi_encode"
3058 mpeg2_v4l2m2m_decoder_deps="v4l2_m2m mpeg2_v4l2_m2m"
3059 mpeg4_crystalhd_decoder_select="crystalhd"
3060 mpeg4_cuvid_decoder_deps="cuvid"
3061 mpeg4_mediacodec_decoder_deps="mediacodec"
3062 mpeg4_mmal_decoder_deps="mmal"
3063 mpeg4_omx_encoder_deps="omx"
3064 mpeg4_v4l2m2m_decoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
3065 mpeg4_v4l2m2m_encoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
3066 msmpeg4_crystalhd_decoder_select="crystalhd"
3067 nvenc_h264_encoder_select="h264_nvenc_encoder"
3068 nvenc_hevc_encoder_select="hevc_nvenc_encoder"
3069 vc1_crystalhd_decoder_select="crystalhd"
3070 vc1_cuvid_decoder_deps="cuvid"
3071 vc1_mmal_decoder_deps="mmal"
3072 vc1_qsv_decoder_select="qsvdec vc1_parser"
3073 vc1_v4l2m2m_decoder_deps="v4l2_m2m vc1_v4l2_m2m"
3074 vp8_cuvid_decoder_deps="cuvid"
3075 vp8_mediacodec_decoder_deps="mediacodec"
3076 vp8_qsv_decoder_select="qsvdec vp8_parser"
3077 vp8_rkmpp_decoder_deps="rkmpp"
3078 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
3079 vp8_vaapi_encoder_select="vaapi_encode"
3080 vp8_v4l2m2m_decoder_deps="v4l2_m2m vp8_v4l2_m2m"
3081 vp8_v4l2m2m_encoder_deps="v4l2_m2m vp8_v4l2_m2m"
3082 vp9_cuvid_decoder_deps="cuvid"
3083 vp9_mediacodec_decoder_deps="mediacodec"
3084 vp9_rkmpp_decoder_deps="rkmpp"
3085 vp9_vaapi_encoder_deps="VAEncPictureParameterBufferVP9"
3086 vp9_vaapi_encoder_select="vaapi_encode"
3087 vp9_v4l2m2m_decoder_deps="v4l2_m2m vp9_v4l2_m2m"
3088 wmv3_crystalhd_decoder_select="crystalhd"
3089
3090 # parsers
3091 aac_parser_select="adts_header"
3092 av1_parser_select="cbs_av1"
3093 h264_parser_select="golomb h264dsp h264parse"
3094 hevc_parser_select="hevcparse"
3095 mpegaudio_parser_select="mpegaudioheader"
3096 mpegvideo_parser_select="mpegvideo"
3097 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
3098 vc1_parser_select="vc1dsp"
3099
3100 # bitstream_filters
3101 aac_adtstoasc_bsf_select="adts_header"
3102 av1_frame_split_bsf_select="cbs_av1"
3103 av1_metadata_bsf_select="cbs_av1"
3104 eac3_core_bsf_select="ac3_parser"
3105 filter_units_bsf_select="cbs"
3106 h264_metadata_bsf_deps="const_nan"
3107 h264_metadata_bsf_select="cbs_h264"
3108 h264_redundant_pps_bsf_select="cbs_h264"
3109 hevc_metadata_bsf_select="cbs_h265"
3110 mjpeg2jpeg_bsf_select="jpegtables"
3111 mpeg2_metadata_bsf_select="cbs_mpeg2"
3112 trace_headers_bsf_select="cbs"
3113 vp9_metadata_bsf_select="cbs_vp9"
3114
3115 # external libraries
3116 aac_at_decoder_deps="audiotoolbox"
3117 aac_at_decoder_select="aac_adtstoasc_bsf"
3118 ac3_at_decoder_deps="audiotoolbox"
3119 ac3_at_decoder_select="ac3_parser"
3120 adpcm_ima_qt_at_decoder_deps="audiotoolbox"
3121 alac_at_decoder_deps="audiotoolbox"
3122 amr_nb_at_decoder_deps="audiotoolbox"
3123 avisynth_deps_any="libdl LoadLibrary"
3124 avisynth_demuxer_deps="avisynth"
3125 avisynth_demuxer_select="riffdec"
3126 eac3_at_decoder_deps="audiotoolbox"
3127 eac3_at_decoder_select="ac3_parser"
3128 gsm_ms_at_decoder_deps="audiotoolbox"
3129 ilbc_at_decoder_deps="audiotoolbox"
3130 mp1_at_decoder_deps="audiotoolbox"
3131 mp2_at_decoder_deps="audiotoolbox"
3132 mp3_at_decoder_deps="audiotoolbox"
3133 mp1_at_decoder_select="mpegaudioheader"
3134 mp2_at_decoder_select="mpegaudioheader"
3135 mp3_at_decoder_select="mpegaudioheader"
3136 pcm_alaw_at_decoder_deps="audiotoolbox"
3137 pcm_mulaw_at_decoder_deps="audiotoolbox"
3138 qdmc_at_decoder_deps="audiotoolbox"
3139 qdm2_at_decoder_deps="audiotoolbox"
3140 aac_at_encoder_deps="audiotoolbox"
3141 aac_at_encoder_select="audio_frame_queue"
3142 alac_at_encoder_deps="audiotoolbox"
3143 alac_at_encoder_select="audio_frame_queue"
3144 ilbc_at_encoder_deps="audiotoolbox"
3145 ilbc_at_encoder_select="audio_frame_queue"
3146 pcm_alaw_at_encoder_deps="audiotoolbox"
3147 pcm_alaw_at_encoder_select="audio_frame_queue"
3148 pcm_mulaw_at_encoder_deps="audiotoolbox"
3149 pcm_mulaw_at_encoder_select="audio_frame_queue"
3150 chromaprint_muxer_deps="chromaprint"
3151 h264_videotoolbox_encoder_deps="pthreads"
3152 h264_videotoolbox_encoder_select="videotoolbox_encoder"
3153 hevc_videotoolbox_encoder_deps="pthreads"
3154 hevc_videotoolbox_encoder_select="videotoolbox_encoder"
3155 libaom_av1_decoder_deps="libaom"
3156 libaom_av1_encoder_deps="libaom"
3157 libaom_av1_encoder_select="extract_extradata_bsf"
3158 libaribb24_decoder_deps="libaribb24"
3159 libcelt_decoder_deps="libcelt"
3160 libcodec2_decoder_deps="libcodec2"
3161 libcodec2_encoder_deps="libcodec2"
3162 libdav1d_decoder_deps="libdav1d"
3163 libdavs2_decoder_deps="libdavs2"
3164 libfdk_aac_decoder_deps="libfdk_aac"
3165 libfdk_aac_encoder_deps="libfdk_aac"
3166 libfdk_aac_encoder_select="audio_frame_queue"
3167 libgme_demuxer_deps="libgme"
3168 libgsm_decoder_deps="libgsm"
3169 libgsm_encoder_deps="libgsm"
3170 libgsm_ms_decoder_deps="libgsm"
3171 libgsm_ms_encoder_deps="libgsm"
3172 libilbc_decoder_deps="libilbc"
3173 libilbc_encoder_deps="libilbc"
3174 libkvazaar_encoder_deps="libkvazaar"
3175 libmodplug_demuxer_deps="libmodplug"
3176 libmp3lame_encoder_deps="libmp3lame"
3177 libmp3lame_encoder_select="audio_frame_queue mpegaudioheader"
3178 libopencore_amrnb_decoder_deps="libopencore_amrnb"
3179 libopencore_amrnb_encoder_deps="libopencore_amrnb"
3180 libopencore_amrnb_encoder_select="audio_frame_queue"
3181 libopencore_amrwb_decoder_deps="libopencore_amrwb"
3182 libopenh264_decoder_deps="libopenh264"
3183 libopenh264_decoder_select="h264_mp4toannexb_bsf"
3184 libopenh264_encoder_deps="libopenh264"
3185 libopenjpeg_decoder_deps="libopenjpeg"
3186 libopenjpeg_encoder_deps="libopenjpeg"
3187 libopenmpt_demuxer_deps="libopenmpt"
3188 libopus_decoder_deps="libopus"
3189 libopus_encoder_deps="libopus"
3190 libopus_encoder_select="audio_frame_queue"
3191 librsvg_decoder_deps="librsvg"
3192 libshine_encoder_deps="libshine"
3193 libshine_encoder_select="audio_frame_queue"
3194 libspeex_decoder_deps="libspeex"
3195 libspeex_encoder_deps="libspeex"
3196 libspeex_encoder_select="audio_frame_queue"
3197 libtheora_encoder_deps="libtheora"
3198 libtwolame_encoder_deps="libtwolame"
3199 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
3200 libvorbis_decoder_deps="libvorbis"
3201 libvorbis_encoder_deps="libvorbis libvorbisenc"
3202 libvorbis_encoder_select="audio_frame_queue"
3203 libvpx_vp8_decoder_deps="libvpx"
3204 libvpx_vp8_encoder_deps="libvpx"
3205 libvpx_vp9_decoder_deps="libvpx"
3206 libvpx_vp9_encoder_deps="libvpx"
3207 libwavpack_encoder_deps="libwavpack"
3208 libwavpack_encoder_select="audio_frame_queue"
3209 libwebp_encoder_deps="libwebp"
3210 libwebp_anim_encoder_deps="libwebp"
3211 libx262_encoder_deps="libx262"
3212 libx264_encoder_deps="libx264"
3213 libx264rgb_encoder_deps="libx264 x264_csp_bgr"
3214 libx264rgb_encoder_select="libx264_encoder"
3215 libx265_encoder_deps="libx265"
3216 libxavs_encoder_deps="libxavs"
3217 libxavs2_encoder_deps="libxavs2"
3218 libxvid_encoder_deps="libxvid"
3219 libzvbi_teletext_decoder_deps="libzvbi"
3220 vapoursynth_demuxer_deps="vapoursynth"
3221 videotoolbox_suggest="coreservices"
3222 videotoolbox_deps="corefoundation coremedia corevideo"
3223 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
3224
3225 # demuxers / muxers
3226 ac3_demuxer_select="ac3_parser"
3227 aiff_muxer_select="iso_media"
3228 asf_demuxer_select="riffdec"
3229 asf_o_demuxer_select="riffdec"
3230 asf_muxer_select="riffenc"
3231 asf_stream_muxer_select="asf_muxer"
3232 avi_demuxer_select="iso_media riffdec exif"
3233 avi_muxer_select="riffenc"
3234 caf_demuxer_select="iso_media riffdec"
3235 caf_muxer_select="iso_media"
3236 dash_muxer_select="mp4_muxer"
3237 dash_demuxer_deps="libxml2"
3238 dirac_demuxer_select="dirac_parser"
3239 dts_demuxer_select="dca_parser"
3240 dtshd_demuxer_select="dca_parser"
3241 dv_demuxer_select="dvprofile"
3242 dv_muxer_select="dvprofile"
3243 dxa_demuxer_select="riffdec"
3244 eac3_demuxer_select="ac3_parser"
3245 f4v_muxer_select="mov_muxer"
3246 fifo_muxer_deps="threads"
3247 flac_demuxer_select="flac_parser"
3248 hds_muxer_select="flv_muxer"
3249 hls_muxer_select="mpegts_muxer"
3250 hls_muxer_suggest="gcrypt openssl"
3251 image2_alias_pix_demuxer_select="image2_demuxer"
3252 image2_brender_pix_demuxer_select="image2_demuxer"
3253 ipod_muxer_select="mov_muxer"
3254 ismv_muxer_select="mov_muxer"
3255 ivf_muxer_select="av1_metadata_bsf vp9_superframe_bsf"
3256 matroska_audio_muxer_select="matroska_muxer"
3257 matroska_demuxer_select="iso_media riffdec"
3258 matroska_demuxer_suggest="bzlib lzo zlib"
3259 matroska_muxer_select="iso_media riffenc"
3260 mmf_muxer_select="riffenc"
3261 mov_demuxer_select="iso_media riffdec"
3262 mov_demuxer_suggest="zlib"
3263 mov_muxer_select="iso_media riffenc rtpenc_chain"
3264 mp3_demuxer_select="mpegaudio_parser"
3265 mp3_muxer_select="mpegaudioheader"
3266 mp4_muxer_select="mov_muxer"
3267 mpegts_demuxer_select="iso_media"
3268 mpegts_muxer_select="adts_muxer latm_muxer"
3269 mpegtsraw_demuxer_select="mpegts_demuxer"
3270 mxf_d10_muxer_select="mxf_muxer"
3271 mxf_opatom_muxer_select="mxf_muxer"
3272 nut_muxer_select="riffenc"
3273 nuv_demuxer_select="riffdec"
3274 oga_muxer_select="ogg_muxer"
3275 ogg_demuxer_select="dirac_parse"
3276 ogv_muxer_select="ogg_muxer"
3277 opus_muxer_select="ogg_muxer"
3278 psp_muxer_select="mov_muxer"
3279 rtp_demuxer_select="sdp_demuxer"
3280 rtp_muxer_select="golomb"
3281 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
3282 rtsp_demuxer_select="http_protocol rtpdec"
3283 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
3284 sap_demuxer_select="sdp_demuxer"
3285 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
3286 sdp_demuxer_select="rtpdec"
3287 smoothstreaming_muxer_select="ismv_muxer"
3288 spdif_demuxer_select="adts_header"
3289 spdif_muxer_select="adts_header"
3290 spx_muxer_select="ogg_muxer"
3291 swf_demuxer_suggest="zlib"
3292 tak_demuxer_select="tak_parser"
3293 tg2_muxer_select="mov_muxer"
3294 tgp_muxer_select="mov_muxer"
3295 vobsub_demuxer_select="mpegps_demuxer"
3296 w64_demuxer_select="wav_demuxer"
3297 w64_muxer_select="wav_muxer"
3298 wav_demuxer_select="riffdec"
3299 wav_muxer_select="riffenc"
3300 webm_muxer_select="iso_media riffenc"
3301 webm_dash_manifest_demuxer_select="matroska_demuxer"
3302 wtv_demuxer_select="mpegts_demuxer riffdec"
3303 wtv_muxer_select="mpegts_muxer riffenc"
3304 xmv_demuxer_select="riffdec"
3305 xwma_demuxer_select="riffdec"
3306
3307 # indevs / outdevs
3308 android_camera_indev_deps="android camera2ndk mediandk pthreads"
3309 android_camera_indev_extralibs="-landroid -lcamera2ndk -lmediandk"
3310 alsa_indev_deps="alsa"
3311 alsa_outdev_deps="alsa"
3312 avfoundation_indev_deps="avfoundation corevideo coremedia pthreads"
3313 avfoundation_indev_suggest="coregraphics applicationservices"
3314 avfoundation_indev_extralibs="-framework Foundation"
3315 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
3316 caca_outdev_deps="libcaca"
3317 decklink_deps_any="libdl LoadLibrary"
3318 decklink_indev_deps="decklink threads"
3319 decklink_indev_extralibs="-lstdc++"
3320 decklink_outdev_deps="decklink threads"
3321 decklink_outdev_suggest="libklvanc"
3322 decklink_outdev_extralibs="-lstdc++"
3323 dshow_indev_deps="IBaseFilter"
3324 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
3325 fbdev_indev_deps="linux_fb_h"
3326 fbdev_outdev_deps="linux_fb_h"
3327 gdigrab_indev_deps="CreateDIBSection"
3328 gdigrab_indev_extralibs="-lgdi32"
3329 gdigrab_indev_select="bmp_decoder"
3330 iec61883_indev_deps="libiec61883"
3331 jack_indev_deps="libjack"
3332 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
3333 kmsgrab_indev_deps="libdrm"
3334 lavfi_indev_deps="avfilter"
3335 libcdio_indev_deps="libcdio"
3336 libdc1394_indev_deps="libdc1394"
3337 openal_indev_deps="openal"
3338 opengl_outdev_deps="opengl"
3339 opengl_outdev_suggest="sdl2"
3340 oss_indev_deps_any="sys_soundcard_h"
3341 oss_outdev_deps_any="sys_soundcard_h"
3342 pulse_indev_deps="libpulse"
3343 pulse_outdev_deps="libpulse"
3344 sdl2_outdev_deps="sdl2"
3345 sndio_indev_deps="sndio"
3346 sndio_outdev_deps="sndio"
3347 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
3348 v4l2_indev_suggest="libv4l2"
3349 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
3350 v4l2_outdev_suggest="libv4l2"
3351 vfwcap_indev_deps="vfw32 vfwcap_defines"
3352 xcbgrab_indev_deps="libxcb"
3353 xcbgrab_indev_suggest="libxcb_shm libxcb_shape libxcb_xfixes"
3354 xv_outdev_deps="xlib"
3355
3356 # protocols
3357 async_protocol_deps="threads"
3358 bluray_protocol_deps="libbluray"
3359 ffrtmpcrypt_protocol_conflict="librtmp_protocol"
3360 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl mbedtls"
3361 ffrtmpcrypt_protocol_select="tcp_protocol"
3362 ffrtmphttp_protocol_conflict="librtmp_protocol"
3363 ffrtmphttp_protocol_select="http_protocol"
3364 ftp_protocol_select="tcp_protocol"
3365 gopher_protocol_select="network"
3366 http_protocol_select="tcp_protocol"
3367 http_protocol_suggest="zlib"
3368 httpproxy_protocol_select="tcp_protocol"
3369 httpproxy_protocol_suggest="zlib"
3370 https_protocol_select="tls_protocol"
3371 https_protocol_suggest="zlib"
3372 icecast_protocol_select="http_protocol"
3373 mmsh_protocol_select="http_protocol"
3374 mmst_protocol_select="network"
3375 rtmp_protocol_conflict="librtmp_protocol"
3376 rtmp_protocol_select="tcp_protocol"
3377 rtmp_protocol_suggest="zlib"
3378 rtmpe_protocol_select="ffrtmpcrypt_protocol"
3379 rtmpe_protocol_suggest="zlib"
3380 rtmps_protocol_conflict="librtmp_protocol"
3381 rtmps_protocol_select="tls_protocol"
3382 rtmps_protocol_suggest="zlib"
3383 rtmpt_protocol_select="ffrtmphttp_protocol"
3384 rtmpt_protocol_suggest="zlib"
3385 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
3386 rtmpte_protocol_suggest="zlib"
3387 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
3388 rtmpts_protocol_suggest="zlib"
3389 rtp_protocol_select="udp_protocol"
3390 schannel_conflict="openssl gnutls libtls mbedtls"
3391 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
3392 sctp_protocol_select="network"
3393 securetransport_conflict="openssl gnutls libtls mbedtls"
3394 srtp_protocol_select="rtp_protocol srtp"
3395 tcp_protocol_select="network"
3396 tls_protocol_deps_any="gnutls openssl schannel securetransport libtls mbedtls"
3397 tls_protocol_select="tcp_protocol"
3398 udp_protocol_select="network"
3399 udplite_protocol_select="network"
3400 unix_protocol_deps="sys_un_h"
3401 unix_protocol_select="network"
3402
3403 # external library protocols
3404 librtmp_protocol_deps="librtmp"
3405 librtmpe_protocol_deps="librtmp"
3406 librtmps_protocol_deps="librtmp"
3407 librtmpt_protocol_deps="librtmp"
3408 librtmpte_protocol_deps="librtmp"
3409 libsmbclient_protocol_deps="libsmbclient gplv3"
3410 libsrt_protocol_deps="libsrt"
3411 libsrt_protocol_select="network"
3412 libssh_protocol_deps="libssh"
3413 libtls_conflict="openssl gnutls mbedtls"
3414
3415 # filters
3416 afftdn_filter_deps="avcodec"
3417 afftdn_filter_select="fft"
3418 afftfilt_filter_deps="avcodec"
3419 afftfilt_filter_select="fft"
3420 afir_filter_deps="avcodec"
3421 afir_filter_select="fft"
3422 amovie_filter_deps="avcodec avformat"
3423 aresample_filter_deps="swresample"
3424 asr_filter_deps="pocketsphinx"
3425 ass_filter_deps="libass"
3426 atempo_filter_deps="avcodec"
3427 atempo_filter_select="rdft"
3428 avgblur_opencl_filter_deps="opencl"
3429 azmq_filter_deps="libzmq"
3430 blackframe_filter_deps="gpl"
3431 bm3d_filter_deps="avcodec"
3432 bm3d_filter_select="dct"
3433 boxblur_filter_deps="gpl"
3434 boxblur_opencl_filter_deps="opencl gpl"
3435 bs2b_filter_deps="libbs2b"
3436 colorkey_opencl_filter_deps="opencl"
3437 colormatrix_filter_deps="gpl"
3438 convolution_opencl_filter_deps="opencl"
3439 convolve_filter_deps="avcodec"
3440 convolve_filter_select="fft"
3441 coreimage_filter_deps="coreimage appkit"
3442 coreimage_filter_extralibs="-framework OpenGL"
3443 coreimagesrc_filter_deps="coreimage appkit"
3444 coreimagesrc_filter_extralibs="-framework OpenGL"
3445 cover_rect_filter_deps="avcodec avformat gpl"
3446 cropdetect_filter_deps="gpl"
3447 deconvolve_filter_deps="avcodec"
3448 deconvolve_filter_select="fft"
3449 deinterlace_qsv_filter_deps="libmfx"
3450 deinterlace_vaapi_filter_deps="vaapi"
3451 delogo_filter_deps="gpl"
3452 denoise_vaapi_filter_deps="vaapi"
3453 derain_filter_select="dnn"
3454 deshake_filter_select="pixelutils"
3455 dilation_opencl_filter_deps="opencl"
3456 drawtext_filter_deps="libfreetype"
3457 drawtext_filter_suggest="libfontconfig libfribidi"
3458 elbg_filter_deps="avcodec"
3459 eq_filter_deps="gpl"
3460 erosion_opencl_filter_deps="opencl"
3461 fftfilt_filter_deps="avcodec"
3462 fftfilt_filter_select="rdft"
3463 fftdnoiz_filter_deps="avcodec"
3464 fftdnoiz_filter_select="fft"
3465 find_rect_filter_deps="avcodec avformat gpl"
3466 firequalizer_filter_deps="avcodec"
3467 firequalizer_filter_select="rdft"
3468 flite_filter_deps="libflite"
3469 framerate_filter_select="scene_sad"
3470 freezedetect_filter_select="scene_sad"
3471 frei0r_filter_deps="frei0r libdl"
3472 frei0r_src_filter_deps="frei0r libdl"
3473 fspp_filter_deps="gpl"
3474 geq_filter_deps="gpl"
3475 histeq_filter_deps="gpl"
3476 hqdn3d_filter_deps="gpl"
3477 interlace_filter_deps="gpl"
3478 kerndeint_filter_deps="gpl"
3479 ladspa_filter_deps="ladspa libdl"
3480 lensfun_filter_deps="liblensfun version3"
3481 lv2_filter_deps="lv2"
3482 mcdeint_filter_deps="avcodec gpl"
3483 movie_filter_deps="avcodec avformat"
3484 mpdecimate_filter_deps="gpl"
3485 mpdecimate_filter_select="pixelutils"
3486 minterpolate_filter_select="scene_sad"
3487 mptestsrc_filter_deps="gpl"
3488 negate_filter_deps="lut_filter"
3489 nlmeans_opencl_filter_deps="opencl"
3490 nnedi_filter_deps="gpl"
3491 ocr_filter_deps="libtesseract"
3492 ocv_filter_deps="libopencv"
3493 openclsrc_filter_deps="opencl"
3494 overlay_opencl_filter_deps="opencl"
3495 overlay_qsv_filter_deps="libmfx"
3496 overlay_qsv_filter_select="qsvvpp"
3497 owdenoise_filter_deps="gpl"
3498 pan_filter_deps="swresample"
3499 perspective_filter_deps="gpl"
3500 phase_filter_deps="gpl"
3501 pp7_filter_deps="gpl"
3502 pp_filter_deps="gpl postproc"
3503 prewitt_opencl_filter_deps="opencl"
3504 procamp_vaapi_filter_deps="vaapi"
3505 program_opencl_filter_deps="opencl"
3506 pullup_filter_deps="gpl"
3507 removelogo_filter_deps="avcodec avformat swscale"
3508 repeatfields_filter_deps="gpl"
3509 resample_filter_deps="avresample"
3510 roberts_opencl_filter_deps="opencl"
3511 rubberband_filter_deps="librubberband"
3512 sab_filter_deps="gpl swscale"
3513 scale2ref_filter_deps="swscale"
3514 scale_filter_deps="swscale"
3515 scale_qsv_filter_deps="libmfx"
3516 select_filter_select="scene_sad"
3517 sharpness_vaapi_filter_deps="vaapi"
3518 showcqt_filter_deps="avcodec avformat swscale"
3519 showcqt_filter_suggest="libfontconfig libfreetype"
3520 showcqt_filter_select="fft"
3521 showfreqs_filter_deps="avcodec"
3522 showfreqs_filter_select="fft"
3523 showspectrum_filter_deps="avcodec"
3524 showspectrum_filter_select="fft"
3525 showspectrumpic_filter_deps="avcodec"
3526 showspectrumpic_filter_select="fft"
3527 signature_filter_deps="gpl avcodec avformat"
3528 smartblur_filter_deps="gpl swscale"
3529 sobel_opencl_filter_deps="opencl"
3530 sofalizer_filter_deps="libmysofa avcodec"
3531 sofalizer_filter_select="fft"
3532 spectrumsynth_filter_deps="avcodec"
3533 spectrumsynth_filter_select="fft"
3534 spp_filter_deps="gpl avcodec"
3535 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3536 sr_filter_deps="avformat swscale"
3537 sr_filter_select="dnn"
3538 stereo3d_filter_deps="gpl"
3539 subtitles_filter_deps="avformat avcodec libass"
3540 super2xsai_filter_deps="gpl"
3541 pixfmts_super2xsai_test_deps="super2xsai_filter"
3542 tinterlace_filter_deps="gpl"
3543 tinterlace_merge_test_deps="tinterlace_filter"
3544 tinterlace_pad_test_deps="tinterlace_filter"
3545 tonemap_filter_deps="const_nan"
3546 tonemap_opencl_filter_deps="opencl const_nan"
3547 transpose_opencl_filter_deps="opencl"
3548 transpose_vaapi_filter_deps="vaapi VAProcPipelineCaps_rotation_flags"
3549 unsharp_opencl_filter_deps="opencl"
3550 uspp_filter_deps="gpl avcodec"
3551 vaguedenoiser_filter_deps="gpl"
3552 vidstabdetect_filter_deps="libvidstab"
3553 vidstabtransform_filter_deps="libvidstab"
3554 libvmaf_filter_deps="libvmaf pthreads"
3555 zmq_filter_deps="libzmq"
3556 zoompan_filter_deps="swscale"
3557 zscale_filter_deps="libzimg const_nan"
3558 scale_vaapi_filter_deps="vaapi"
3559 vpp_qsv_filter_deps="libmfx"
3560 vpp_qsv_filter_select="qsvvpp"
3561 yadif_cuda_filter_deps="ffnvcodec"
3562 yadif_cuda_filter_deps_any="cuda_nvcc cuda_llvm"
3563
3564 # examples
3565 avio_dir_cmd_deps="avformat avutil"
3566 avio_reading_deps="avformat avcodec avutil"
3567 decode_audio_example_deps="avcodec avutil"
3568 decode_video_example_deps="avcodec avutil"
3569 demuxing_decoding_example_deps="avcodec avformat avutil"
3570 encode_audio_example_deps="avcodec avutil"
3571 encode_video_example_deps="avcodec avutil"
3572 extract_mvs_example_deps="avcodec avformat avutil"
3573 filter_audio_example_deps="avfilter avutil"
3574 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3575 filtering_video_example_deps="avfilter avcodec avformat avutil"
3576 http_multiclient_example_deps="avformat avutil fork"
3577 hw_decode_example_deps="avcodec avformat avutil"
3578 metadata_example_deps="avformat avutil"
3579 muxing_example_deps="avcodec avformat avutil swscale"
3580 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
3581 remuxing_example_deps="avcodec avformat avutil"
3582 resampling_audio_example_deps="avutil swresample"
3583 scaling_video_example_deps="avutil swscale"
3584 transcode_aac_example_deps="avcodec avformat swresample"
3585 transcoding_example_deps="avfilter avcodec avformat avutil"
3586 vaapi_encode_example_deps="avcodec avutil h264_vaapi_encoder"
3587 vaapi_transcode_example_deps="avcodec avformat avutil h264_vaapi_encoder"
3588
3589 # EXTRALIBS_LIST
3590 cpu_init_extralibs="pthreads_extralibs"
3591 cws2fws_extralibs="zlib_extralibs"
3592
3593 # libraries, in any order
3594 avcodec_deps="avutil"
3595 avcodec_suggest="libm"
3596 avcodec_select="null_bsf"
3597 avdevice_deps="avformat avcodec avutil"
3598 avdevice_suggest="libm"
3599 avfilter_deps="avutil"
3600 avfilter_suggest="libm"
3601 avformat_deps="avcodec avutil"
3602 avformat_suggest="libm network zlib"
3603 avresample_deps="avutil"
3604 avresample_suggest="libm"
3605 avutil_suggest="clock_gettime ffnvcodec libm libdrm libmfx opencl user32 vaapi videotoolbox corefoundation corevideo coremedia bcrypt"
3606 postproc_deps="avutil gpl"
3607 postproc_suggest="libm"
3608 swresample_deps="avutil"
3609 swresample_suggest="libm libsoxr"
3610 swscale_deps="avutil"
3611 swscale_suggest="libm"
3612
3613 avcodec_extralibs="pthreads_extralibs iconv_extralibs dxva2_extralibs"
3614 avfilter_extralibs="pthreads_extralibs"
3615 avutil_extralibs="d3d11va_extralibs nanosleep_extralibs pthreads_extralibs vaapi_drm_extralibs vaapi_x11_extralibs vdpau_x11_extralibs"
3616
3617 # programs
3618 ffmpeg_deps="avcodec avfilter avformat"
3619 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3620                hflip_filter null_filter
3621                transpose_filter trim_filter vflip_filter"
3622 ffmpeg_suggest="ole32 psapi shell32"
3623 ffplay_deps="avcodec avformat swscale swresample sdl2"
3624 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3625 ffplay_suggest="shell32"
3626 ffprobe_deps="avcodec avformat"
3627 ffprobe_suggest="shell32"
3628
3629 # documentation
3630 podpages_deps="perl"
3631 manpages_deps="perl pod2man"
3632 htmlpages_deps="perl"
3633 htmlpages_deps_any="makeinfo_html texi2html"
3634 txtpages_deps="perl makeinfo"
3635 doc_deps_any="manpages htmlpages podpages txtpages"
3636
3637 # default parameters
3638
3639 logfile="ffbuild/config.log"
3640
3641 # installation paths
3642 prefix_default="/usr/local"
3643 bindir_default='${prefix}/bin'
3644 datadir_default='${prefix}/share/ffmpeg'
3645 docdir_default='${prefix}/share/doc/ffmpeg'
3646 incdir_default='${prefix}/include'
3647 libdir_default='${prefix}/lib'
3648 mandir_default='${prefix}/share/man'
3649
3650 # toolchain
3651 ar_default="ar"
3652 cc_default="gcc"
3653 cxx_default="g++"
3654 host_cc_default="gcc"
3655 doxygen_default="doxygen"
3656 install="install"
3657 ln_s_default="ln -s -f"
3658 nm_default="nm -g"
3659 pkg_config_default=pkg-config
3660 ranlib_default="ranlib"
3661 strip_default="strip"
3662 version_script='--version-script'
3663 objformat="elf32"
3664 x86asmexe_default="nasm"
3665 windres_default="windres"
3666 striptype="direct"
3667
3668 # OS
3669 target_os_default=$(tolower $(uname -s))
3670 host_os=$target_os_default
3671
3672 # machine
3673 if test "$target_os_default" = aix; then
3674     arch_default=$(uname -p)
3675     strip_default="strip -X32_64"
3676     nm_default="nm -g -X32_64"
3677 else
3678     arch_default=$(uname -m)
3679 fi
3680 cpu="generic"
3681 intrinsics="none"
3682
3683 # configurable options
3684 enable $PROGRAM_LIST
3685 enable $DOCUMENT_LIST
3686 enable $EXAMPLE_LIST
3687 enable $(filter_out avresample $LIBRARY_LIST)
3688 enable stripping
3689
3690 enable asm
3691 enable debug
3692 enable doc
3693 enable faan faandct faanidct
3694 enable optimizations
3695 enable runtime_cpudetect
3696 enable safe_bitstream_reader
3697 enable static
3698 enable swscale_alpha
3699 enable valgrind_backtrace
3700
3701 sws_max_filter_size_default=256
3702 set_default sws_max_filter_size
3703
3704 # internal components are enabled by default
3705 enable $EXTRALIBS_LIST
3706
3707 # Avoid external, non-system, libraries getting enabled by dependency resolution
3708 disable $EXTERNAL_LIBRARY_LIST $HWACCEL_LIBRARY_LIST
3709
3710 # build settings
3711 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3712 LIBPREF="lib"
3713 LIBSUF=".a"
3714 FULLNAME='$(NAME)$(BUILDSUF)'
3715 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3716 SLIBPREF="lib"
3717 SLIBSUF=".so"
3718 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3719 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3720 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3721 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3722 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3723 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3724 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
3725
3726 asflags_filter=echo
3727 cflags_filter=echo
3728 ldflags_filter=echo
3729
3730 AS_C='-c'
3731 AS_O='-o $@'
3732 CC_C='-c'
3733 CC_E='-E -o $@'
3734 CC_O='-o $@'
3735 CXX_C='-c'
3736 CXX_O='-o $@'
3737 OBJCC_C='-c'
3738 OBJCC_E='-E -o $@'
3739 OBJCC_O='-o $@'
3740 X86ASM_O='-o $@'
3741 LD_O='-o $@'
3742 LD_LIB='-l%'
3743 LD_PATH='-L'
3744 HOSTCC_C='-c'
3745 HOSTCC_E='-E -o $@'
3746 HOSTCC_O='-o $@'
3747 HOSTLD_O='-o $@'
3748 NVCC_C='-c'
3749 NVCC_O='-o $@'
3750
3751 host_extralibs='-lm'
3752 host_cflags_filter=echo
3753 host_ldflags_filter=echo
3754
3755 target_path='$(CURDIR)'
3756
3757 # since the object filename is not given with the -MM flag, the compiler
3758 # is only able to print the basename, and we must add the path ourselves
3759 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3760 DEPFLAGS='-MM'
3761
3762 mkdir -p ffbuild
3763
3764 # find source path
3765 if test -f configure; then
3766     source_path=.
3767 elif test -f src/configure; then
3768     source_path=src
3769 else
3770     source_path=$(cd $(dirname "$0"); pwd)
3771     case "$source_path" in
3772         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3773     esac
3774     test -e "$source_path/config.h" &&
3775         die "Out of tree builds are impossible with config.h in source dir."
3776 fi
3777
3778 for v in "$@"; do
3779     r=${v#*=}
3780     l=${v%"$r"}
3781     r=$(sh_quote "$r")
3782     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3783 done
3784
3785 find_things_extern(){
3786     thing=$1
3787     pattern=$2
3788     file=$source_path/$3
3789     out=${4:-$thing}
3790     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$out/p" "$file"
3791 }
3792
3793 find_filters_extern(){
3794     file=$source_path/$1
3795     sed -n 's/^extern AVFilter ff_[avfsinkrc]\{2,5\}_\([[:alnum:]_]\{1,\}\);/\1_filter/p' $file
3796 }
3797
3798 FILTER_LIST=$(find_filters_extern libavfilter/allfilters.c)
3799 OUTDEV_LIST=$(find_things_extern muxer AVOutputFormat libavdevice/alldevices.c outdev)
3800 INDEV_LIST=$(find_things_extern demuxer AVInputFormat libavdevice/alldevices.c indev)
3801 MUXER_LIST=$(find_things_extern muxer AVOutputFormat libavformat/allformats.c)
3802 DEMUXER_LIST=$(find_things_extern demuxer AVInputFormat libavformat/allformats.c)
3803 ENCODER_LIST=$(find_things_extern encoder AVCodec libavcodec/allcodecs.c)
3804 DECODER_LIST=$(find_things_extern decoder AVCodec libavcodec/allcodecs.c)
3805 CODEC_LIST="
3806     $ENCODER_LIST
3807     $DECODER_LIST
3808 "
3809 PARSER_LIST=$(find_things_extern parser AVCodecParser libavcodec/parsers.c)
3810 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3811 HWACCEL_LIST=$(find_things_extern hwaccel AVHWAccel libavcodec/hwaccels.h)
3812 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3813
3814 AVCODEC_COMPONENTS_LIST="
3815     $BSF_LIST
3816     $DECODER_LIST
3817     $ENCODER_LIST
3818     $HWACCEL_LIST
3819     $PARSER_LIST
3820 "
3821
3822 AVDEVICE_COMPONENTS_LIST="
3823     $INDEV_LIST
3824     $OUTDEV_LIST
3825 "
3826
3827 AVFILTER_COMPONENTS_LIST="
3828     $FILTER_LIST
3829 "
3830
3831 AVFORMAT_COMPONENTS_LIST="
3832     $DEMUXER_LIST
3833     $MUXER_LIST
3834     $PROTOCOL_LIST
3835 "
3836
3837 ALL_COMPONENTS="
3838     $AVCODEC_COMPONENTS_LIST
3839     $AVDEVICE_COMPONENTS_LIST
3840     $AVFILTER_COMPONENTS_LIST
3841     $AVFORMAT_COMPONENTS_LIST
3842 "
3843
3844 for n in $COMPONENT_LIST; do
3845     v=$(toupper ${n%s})_LIST
3846     eval enable \$$v
3847     eval ${n}_if_any="\$$v"
3848 done
3849
3850 enable $ARCH_EXT_LIST
3851
3852 die_unknown(){
3853     echo "Unknown option \"$1\"."
3854     echo "See $0 --help for available options."
3855     exit 1
3856 }
3857
3858 print_in_columns() {
3859     tr ' ' '\n' | sort | tr '\r\n' '  ' | awk -v col_width=24 -v width="$ncols" '
3860     {
3861         num_cols = width > col_width ? int(width / col_width) : 1;
3862         num_rows = int((NF + num_cols-1) / num_cols);
3863         y = x = 1;
3864         for (y = 1; y <= num_rows; y++) {
3865             i = y;
3866             for (x = 1; x <= num_cols; x++) {
3867                 if (i <= NF) {
3868                   line = sprintf("%s%-" col_width "s", line, $i);
3869                 }
3870                 i = i + num_rows;
3871             }
3872             print line; line = "";
3873         }
3874     }' | sed 's/ *$//'
3875 }
3876
3877 show_list() {
3878     suffix=_$1
3879     shift
3880     echo $* | sed s/$suffix//g | print_in_columns
3881     exit 0
3882 }
3883
3884 rand_list(){
3885     IFS=', '
3886     set -- $*
3887     unset IFS
3888     for thing; do
3889         comp=${thing%:*}
3890         prob=${thing#$comp}
3891         prob=${prob#:}
3892         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3893         echo "prob ${prob:-0.5}"
3894         printf '%s\n' $comp
3895     done
3896 }
3897
3898 do_random(){
3899     action=$1
3900     shift
3901     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3902     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3903 }
3904
3905 for opt do
3906     optval="${opt#*=}"
3907     case "$opt" in
3908         --extra-ldflags=*)
3909             add_ldflags $optval
3910         ;;
3911         --extra-ldexeflags=*)
3912             add_ldexeflags $optval
3913         ;;
3914         --extra-ldsoflags=*)
3915             add_ldsoflags $optval
3916         ;;
3917         --extra-ldlibflags=*)
3918             warn "The --extra-ldlibflags option is only provided for compatibility and will be\n"\
3919                  "removed in the future. Use --extra-ldsoflags instead."
3920             add_ldsoflags $optval
3921         ;;
3922         --extra-libs=*)
3923             add_extralibs $optval
3924         ;;
3925         --disable-devices)
3926             disable $INDEV_LIST $OUTDEV_LIST
3927         ;;
3928         --enable-debug=*)
3929             debuglevel="$optval"
3930         ;;
3931         --disable-programs)
3932             disable $PROGRAM_LIST
3933         ;;
3934         --disable-everything)
3935             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3936         ;;
3937         --disable-all)
3938             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3939             disable $LIBRARY_LIST $PROGRAM_LIST doc
3940             enable avutil
3941         ;;
3942         --enable-random|--disable-random)
3943             action=${opt%%-random}
3944             do_random ${action#--} $COMPONENT_LIST
3945         ;;
3946         --enable-random=*|--disable-random=*)
3947             action=${opt%%-random=*}
3948             do_random ${action#--} $optval
3949         ;;
3950         --enable-sdl)
3951             enable sdl2
3952         ;;
3953         --enable-*=*|--disable-*=*)
3954             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3955             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3956             eval list=\$$(toupper $thing)_LIST
3957             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3958             list=$(filter "$name" $list)
3959             [ "$list" = "" ] && warn "Option $opt did not match anything"
3960             test $action = enable && warn_if_gets_disabled $list
3961             $action $list
3962         ;;
3963         --enable-yasm|--disable-yasm)
3964             warn "The ${opt} option is only provided for compatibility and will be\n"\
3965                  "removed in the future. Use --enable-x86asm / --disable-x86asm instead."
3966             test $opt = --enable-yasm && x86asm=yes || x86asm=no
3967         ;;
3968         --yasmexe=*)
3969             warn "The --yasmexe option is only provided for compatibility and will be\n"\
3970                  "removed in the future. Use --x86asmexe instead."
3971             x86asmexe="$optval"
3972         ;;
3973         --enable-?*|--disable-?*)
3974             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3975             if is_in $option $COMPONENT_LIST; then
3976                 test $action = disable && action=unset
3977                 eval $action \$$(toupper ${option%s})_LIST
3978             elif is_in $option $CMDLINE_SELECT; then
3979                 $action $option
3980             else
3981                 die_unknown $opt
3982             fi
3983         ;;
3984         --list-*)
3985             NAME="${opt#--list-}"
3986             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3987             NAME=${NAME%s}
3988             eval show_list $NAME \$$(toupper $NAME)_LIST
3989         ;;
3990         --help|-h) show_help
3991         ;;
3992         --quiet|-q) quiet=yes
3993         ;;
3994         --fatal-warnings) enable fatal_warnings
3995         ;;
3996         --libfuzzer=*)
3997             libfuzzer_path="$optval"
3998         ;;
3999         *)
4000             optname="${opt%%=*}"
4001             optname="${optname#--}"
4002             optname=$(echo "$optname" | sed 's/-/_/g')
4003             if is_in $optname $CMDLINE_SET; then
4004                 eval $optname='$optval'
4005             elif is_in $optname $CMDLINE_APPEND; then
4006                 append $optname "$optval"
4007             else
4008                 die_unknown $opt
4009             fi
4010         ;;
4011     esac
4012 done
4013
4014 for e in $env; do
4015     eval "export $e"
4016 done
4017
4018 if disabled autodetect; then
4019
4020     # Unless iconv is explicitely disabled by the user, we still want to probe
4021     # for the iconv from the libc.
4022     disabled iconv || enable libc_iconv
4023
4024     disable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
4025     disable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
4026 fi
4027 # Mark specifically enabled, but normally autodetected libraries as requested.
4028 for lib in $AUTODETECT_LIBS; do
4029     enabled $lib && request $lib
4030 done
4031 #TODO: switch to $AUTODETECT_LIBS when $THREADS_LIST is supported the same way
4032 enable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
4033 enable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
4034
4035 disabled logging && logfile=/dev/null
4036
4037 # command line configuration sanity checks
4038
4039 # we need to build at least one lib type
4040 if ! enabled_any static shared; then
4041     cat <<EOF
4042 At least one library type must be built.
4043 Specify --enable-static to build the static libraries or --enable-shared to
4044 build the shared libraries as well. To only build the shared libraries specify
4045 --disable-static in addition to --enable-shared.
4046 EOF
4047     exit 1
4048 fi
4049
4050 die_license_disabled() {
4051     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
4052 }
4053
4054 die_license_disabled_gpl() {
4055     enabled $1 || { enabled $v && die "$v is incompatible with the gpl and --enable-$1 is not specified."; }
4056 }
4057
4058 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
4059 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
4060
4061 enabled gpl && map "die_license_disabled_gpl nonfree" $EXTERNAL_LIBRARY_NONFREE_LIST
4062 map "die_license_disabled nonfree" $HWACCEL_LIBRARY_NONFREE_LIST
4063
4064 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
4065
4066 if enabled nonfree; then
4067     license="nonfree and unredistributable"
4068 elif enabled gplv3; then
4069     license="GPL version 3 or later"
4070 elif enabled lgplv3; then
4071     license="LGPL version 3 or later"
4072 elif enabled gpl; then
4073     license="GPL version 2 or later"
4074 else
4075     license="LGPL version 2.1 or later"
4076 fi
4077
4078 enabled_all gnutls openssl &&
4079     die "GnuTLS and OpenSSL must not be enabled at the same time."
4080
4081 enabled_all gnutls mbedtls &&
4082     die "GnuTLS and mbedTLS must not be enabled at the same time."
4083
4084 enabled_all openssl mbedtls &&
4085     die "OpenSSL and mbedTLS must not be enabled at the same time."
4086
4087 # Disable all the library-specific components if the library itself
4088 # is disabled, see AVCODEC_LIST and following _LIST variables.
4089
4090 disable_components(){
4091     disabled ${1} && disable $(
4092         eval components="\$$(toupper ${1})_COMPONENTS"
4093         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
4094     )
4095 }
4096
4097 map 'disable_components $v' $LIBRARY_LIST
4098
4099 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
4100 set >> $logfile
4101
4102 test -n "$valgrind" && toolchain="valgrind-memcheck"
4103
4104 enabled ossfuzz && ! echo $CFLAGS | grep -q -- "-fsanitize="  && ! echo $CFLAGS | grep -q -- "-fcoverage-mapping" &&{
4105     add_cflags  -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp -fno-omit-frame-pointer
4106     add_ldflags -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp
4107 }
4108
4109 case "$toolchain" in
4110     *-asan)
4111         cc_default="${toolchain%-asan}"
4112         add_cflags  -fsanitize=address
4113         add_ldflags -fsanitize=address
4114     ;;
4115     *-msan)
4116         cc_default="${toolchain%-msan}"
4117         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
4118         add_ldflags -fsanitize=memory
4119     ;;
4120     *-tsan)
4121         cc_default="${toolchain%-tsan}"
4122         add_cflags  -fsanitize=thread
4123         add_ldflags -fsanitize=thread
4124         case "$toolchain" in
4125             gcc-tsan)
4126                 add_cflags  -fPIC
4127                 add_ldflags -fPIC
4128                 ;;
4129         esac
4130     ;;
4131     *-usan)
4132         cc_default="${toolchain%-usan}"
4133         add_cflags  -fsanitize=undefined
4134         add_ldflags -fsanitize=undefined
4135     ;;
4136     valgrind-*)
4137         target_exec_default="valgrind"
4138         case "$toolchain" in
4139             valgrind-massif)
4140                 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"
4141                 ;;
4142             valgrind-memcheck)
4143                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
4144                 ;;
4145         esac
4146     ;;
4147     msvc)
4148         # Check whether the current MSVC version needs the C99 converter.
4149         # From MSVC 2013 (compiler major version 18) onwards, it does actually
4150         # support enough of C99 to build ffmpeg. Default to the new
4151         # behaviour if the regexp was unable to match anything, since this
4152         # successfully parses the version number of existing supported
4153         # versions that require the converter (MSVC 2010 and 2012).
4154         cl_major_ver=$(cl.exe 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
4155         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
4156             cc_default="cl.exe"
4157             cxx_default="cl.exe"
4158         else
4159             die "Unsupported MSVC version (2013 or newer required)"
4160         fi
4161         ld_default="$source_path/compat/windows/mslink"
4162         nm_default="dumpbin.exe -symbols"
4163         ar_default="lib.exe"
4164         case "$arch" in
4165         aarch64|arm64)
4166             as_default="armasm64.exe"
4167             ;;
4168         arm*)
4169             as_default="armasm.exe"
4170             ;;
4171         esac
4172         target_os_default="win32"
4173         # Use a relative path for TMPDIR. This makes sure all the
4174         # ffconf temp files are written with a relative path, avoiding
4175         # issues with msys/win32 path conversion for MSVC parameters
4176         # such as -Fo<file> or -out:<file>.
4177         TMPDIR=.
4178     ;;
4179     icl)
4180         cc_default="icl"
4181         ld_default="xilink"
4182         nm_default="dumpbin -symbols"
4183         ar_default="xilib"
4184         target_os_default="win32"
4185         TMPDIR=.
4186     ;;
4187     gcov)
4188         add_cflags  -fprofile-arcs -ftest-coverage
4189         add_ldflags -fprofile-arcs -ftest-coverage
4190     ;;
4191     llvm-cov)
4192         add_cflags -fprofile-arcs -ftest-coverage
4193         add_ldflags --coverage
4194     ;;
4195     hardened)
4196         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
4197         add_cflags   -fno-strict-overflow -fstack-protector-all
4198         add_ldflags  -Wl,-z,relro -Wl,-z,now
4199         add_cflags   -fPIE
4200         add_ldexeflags -fPIE -pie
4201     ;;
4202     ?*)
4203         die "Unknown toolchain $toolchain"
4204     ;;
4205 esac
4206
4207 if test -n "$cross_prefix"; then
4208     test -n "$arch" && test -n "$target_os" ||
4209         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
4210     enable cross_compile
4211 fi
4212
4213 set_default target_os
4214 if test "$target_os" = android; then
4215     cc_default="clang"
4216 fi
4217
4218 ar_default="${cross_prefix}${ar_default}"
4219 cc_default="${cross_prefix}${cc_default}"
4220 cxx_default="${cross_prefix}${cxx_default}"
4221 nm_default="${cross_prefix}${nm_default}"
4222 pkg_config_default="${cross_prefix}${pkg_config_default}"
4223 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
4224     ranlib_default="${cross_prefix}${ranlib_default} -D"
4225 else
4226     ranlib_default="${cross_prefix}${ranlib_default}"
4227 fi
4228 strip_default="${cross_prefix}${strip_default}"
4229 windres_default="${cross_prefix}${windres_default}"
4230
4231 sysinclude_default="${sysroot}/usr/include"
4232
4233 if enabled cuda_sdk; then
4234     warn "Option --enable-cuda-sdk is deprecated. Use --enable-cuda-nvcc instead."
4235     enable cuda_nvcc
4236 fi
4237
4238 if enabled cuda_nvcc; then
4239     nvcc_default="nvcc"
4240     nvccflags_default="-gencode arch=compute_30,code=sm_30 -O2"
4241 else
4242     nvcc_default="clang"
4243     nvccflags_default="--cuda-gpu-arch=sm_30 -O2"
4244     NVCC_C=""
4245 fi
4246
4247 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
4248     target_exec x86asmexe nvcc
4249 enabled cross_compile || host_cc_default=$cc
4250 set_default host_cc
4251
4252 pkg_config_fail_message=""
4253 if ! $pkg_config --version >/dev/null 2>&1; then
4254     warn "$pkg_config not found, library detection may fail."
4255     pkg_config=false
4256 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
4257     pkg_config_fail_message="
4258 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
4259 fi
4260
4261 if test $doxygen != $doxygen_default && \
4262   ! $doxygen --version >/dev/null 2>&1; then
4263     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
4264 fi
4265
4266 exesuf() {
4267     case $1 in
4268         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
4269     esac
4270 }
4271
4272 EXESUF=$(exesuf $target_os)
4273 HOSTEXESUF=$(exesuf $host_os)
4274
4275 # set temporary file name
4276 : ${TMPDIR:=$TEMPDIR}
4277 : ${TMPDIR:=$TMP}
4278 : ${TMPDIR:=/tmp}
4279
4280 if [ -n "$tempprefix" ] ; then
4281     mktemp(){
4282         tmpname="$tempprefix.${HOSTNAME}.${UID}"
4283         echo "$tmpname"
4284         mkdir "$tmpname"
4285     }
4286 elif ! test_cmd mktemp -u XXXXXX; then
4287     # simple replacement for missing mktemp
4288     # NOT SAFE FOR GENERAL USE
4289     mktemp(){
4290         tmpname="${2%%XXX*}.${HOSTNAME}.${UID}.$$"
4291         echo "$tmpname"
4292         mkdir "$tmpname"
4293     }
4294 fi
4295
4296 FFTMPDIR=$(mktemp -d "${TMPDIR}/ffconf.XXXXXXXX" 2> /dev/null) ||
4297     die "Unable to create temporary directory in $TMPDIR."
4298
4299 tmpfile(){
4300     tmp="${FFTMPDIR}/test"$2
4301     (set -C; exec > $tmp) 2> /dev/null ||
4302         die "Unable to create temporary file in $FFTMPDIR."
4303     eval $1=$tmp
4304 }
4305
4306 trap 'rm -rf -- "$FFTMPDIR"' EXIT
4307 trap 'exit 2' INT
4308
4309 tmpfile TMPASM .asm
4310 tmpfile TMPC   .c
4311 tmpfile TMPCPP .cpp
4312 tmpfile TMPE   $EXESUF
4313 tmpfile TMPH   .h
4314 tmpfile TMPM   .m
4315 tmpfile TMPCU  .cu
4316 tmpfile TMPO   .o
4317 tmpfile TMPS   .S
4318 tmpfile TMPSH  .sh
4319 tmpfile TMPV   .ver
4320
4321 unset -f mktemp
4322
4323 chmod +x $TMPE
4324
4325 # make sure we can execute files in $TMPDIR
4326 cat > $TMPSH 2>> $logfile <<EOF
4327 #! /bin/sh
4328 EOF
4329 chmod +x $TMPSH >> $logfile 2>&1
4330 if ! $TMPSH >> $logfile 2>&1; then
4331     cat <<EOF
4332 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
4333 variable to another directory and make sure that it is not mounted noexec.
4334 EOF
4335     die "Sanity test failed."
4336 fi
4337
4338 armasm_flags(){
4339     for flag; do
4340         case $flag in
4341             # Filter out MSVC cl.exe options from cflags that shouldn't
4342             # be passed to gas-preprocessor
4343             -M[TD]*)                                            ;;
4344             *)                  echo $flag                      ;;
4345         esac
4346    done
4347 }
4348
4349 cparser_flags(){
4350     for flag; do
4351         case $flag in
4352             -Wno-switch)             echo -Wno-switch-enum ;;
4353             -Wno-format-zero-length) ;;
4354             -Wdisabled-optimization) ;;
4355             -Wno-pointer-sign)       echo -Wno-other ;;
4356             *)                       echo $flag ;;
4357         esac
4358     done
4359 }
4360
4361 msvc_common_flags(){
4362     for flag; do
4363         case $flag in
4364             # In addition to specifying certain flags under the compiler
4365             # specific filters, they must be specified here as well or else the
4366             # generic catch all at the bottom will print the original flag.
4367             -Wall)                ;;
4368             -Wextra)              ;;
4369             -std=c99)             ;;
4370             # Common flags
4371             -fomit-frame-pointer) ;;
4372             -g)                   echo -Z7 ;;
4373             -fno-math-errno)      ;;
4374             -fno-common)          ;;
4375             -fno-signed-zeros)    ;;
4376             -fPIC)                ;;
4377             -mthumb)              ;;
4378             -march=*)             ;;
4379             -lz)                  echo zlib.lib ;;
4380             -lx264)               echo libx264.lib ;;
4381             -lstdc++)             ;;
4382             -l*)                  echo ${flag#-l}.lib ;;
4383             -LARGEADDRESSAWARE)   echo $flag ;;
4384             -L*)                  echo -libpath:${flag#-L} ;;
4385             *)                    echo $flag ;;
4386         esac
4387     done
4388 }
4389
4390 msvc_flags(){
4391     msvc_common_flags "$@"
4392     for flag; do
4393         case $flag in
4394             -Wall)                echo -W3 -wd4018 -wd4146 -wd4244 -wd4305     \
4395                                        -wd4554 ;;
4396             -Wextra)              echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
4397                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
4398                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
4399                                        -wd4307 \
4400                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
4401         esac
4402     done
4403 }
4404
4405 icl_flags(){
4406     msvc_common_flags "$@"
4407     for flag; do
4408         case $flag in
4409             # Despite what Intel's documentation says -Wall, which is supported
4410             # on Windows, does enable remarks so disable them here.
4411             -Wall)                echo $flag -Qdiag-disable:remark ;;
4412             -std=c99)             echo -Qstd=c99 ;;
4413             -flto)                echo -ipo ;;
4414         esac
4415     done
4416 }
4417
4418 icc_flags(){
4419     for flag; do
4420         case $flag in
4421             -flto)                echo -ipo ;;
4422             *)                    echo $flag ;;
4423         esac
4424     done
4425 }
4426
4427 suncc_flags(){
4428     for flag; do
4429         case $flag in
4430             -march=*|-mcpu=*)
4431                 case "${flag#*=}" in
4432                     native)                   echo -xtarget=native       ;;
4433                     v9|niagara)               echo -xarch=sparc          ;;
4434                     ultrasparc)               echo -xarch=sparcvis       ;;
4435                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
4436                     i586|pentium)             echo -xchip=pentium        ;;
4437                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
4438                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
4439                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
4440                     pentium4*)          echo -xtarget=pentium4           ;;
4441                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
4442                     *-sse3)             echo -xarch=sse3                 ;;
4443                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
4444                     bonnell)                   echo -xarch=ssse3         ;;
4445                     corei7|nehalem)            echo -xtarget=nehalem     ;;
4446                     westmere)                  echo -xtarget=westmere    ;;
4447                     silvermont)                echo -xarch=sse4_2        ;;
4448                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
4449                     core-avx*|ivybridge|haswell|broadwell|skylake*|knl)
4450                                                echo -xarch=avx           ;;
4451                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
4452                     btver1)                    echo -xarch=amdsse4a      ;;
4453                     btver2|bdver*|znver*)      echo -xarch=avx           ;;
4454                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
4455                     k8|opteron|athlon64|athlon-fx)
4456                                                echo -xarch=sse2a         ;;
4457                     athlon*)                   echo -xarch=pentium_proa  ;;
4458                 esac
4459                 ;;
4460             -std=c99)             echo -xc99              ;;
4461             -fomit-frame-pointer) echo -xregs=frameptr    ;;
4462             -fPIC)                echo -KPIC -xcode=pic32 ;;
4463             -W*,*)                echo $flag              ;;
4464             -f*-*|-W*|-mimpure-text)                      ;;
4465             -shared)              echo -G                 ;;
4466             *)                    echo $flag              ;;
4467         esac
4468     done
4469 }
4470
4471 probe_cc(){
4472     pfx=$1
4473     _cc=$2
4474     first=$3
4475
4476     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
4477     unset _ld_o _ldflags _ld_lib _ld_path
4478     unset _depflags _DEPCMD _DEPFLAGS
4479     _flags_filter=echo
4480
4481     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
4482         true # no-op to avoid reading stdin in following checks
4483     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
4484         _type=llvm_gcc
4485         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
4486         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
4487         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4488         _cflags_speed='-O3'
4489         _cflags_size='-Os'
4490     elif $_cc -v 2>&1 | grep -qi ^gcc; then
4491         _type=gcc
4492         gcc_version=$($_cc --version | head -n1)
4493         gcc_basever=$($_cc -dumpversion)
4494         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
4495         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
4496         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
4497         case $gcc_basever in
4498             2) ;;
4499             2.*) ;;
4500             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
4501         esac
4502         if [ "$first" = true ]; then
4503             case $gcc_basever in
4504                 4.2*)
4505                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
4506             esac
4507         fi
4508         _cflags_speed='-O3'
4509         _cflags_size='-Os'
4510     elif $_cc --version 2>/dev/null | grep -q ^icc; then
4511         _type=icc
4512         _ident=$($_cc --version | head -n1)
4513         _depflags='-MMD'
4514         _cflags_speed='-O3'
4515         _cflags_size='-Os'
4516         _cflags_noopt='-O1'
4517         _flags_filter=icc_flags
4518     elif $_cc -v 2>&1 | grep -q xlc; then
4519         _type=xlc
4520         _ident=$($_cc -qversion 2>/dev/null | head -n1)
4521         _cflags_speed='-O5'
4522         _cflags_size='-O5 -qcompact'
4523     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
4524         test -d "$sysroot" || die "No valid sysroot specified."
4525         _type=armcc
4526         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
4527         armcc_conf="$PWD/armcc.conf"
4528         $_cc --arm_linux_configure                 \
4529              --arm_linux_config_file="$armcc_conf" \
4530              --configure_sysroot="$sysroot"        \
4531              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
4532              die "Error creating armcc configuration file."
4533         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
4534         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
4535         as_default="${cross_prefix}gcc"
4536         _depflags='-MMD'
4537         _cflags_speed='-O3'
4538         _cflags_size='-Os'
4539     elif $_cc -v 2>&1 | grep -q clang && ! $_cc -? > /dev/null 2>&1; then
4540         _type=clang
4541         _ident=$($_cc --version 2>/dev/null | head -n1)
4542         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4543         _cflags_speed='-O3'
4544         _cflags_size='-Oz'
4545     elif $_cc -V 2>&1 | grep -q Sun; then
4546         _type=suncc
4547         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
4548         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
4549         _DEPFLAGS='-xM1 -xc99'
4550         _ldflags='-std=c99'
4551         _cflags_speed='-O5'
4552         _cflags_size='-O5 -xspace'
4553         _flags_filter=suncc_flags
4554     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
4555         _type=pathscale
4556         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4557         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4558         _cflags_speed='-O2'
4559         _cflags_size='-Os'
4560         _flags_filter='filter_out -Wdisabled-optimization'
4561     elif $_cc -v 2>&1 | grep -q Open64; then
4562         _type=open64
4563         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4564         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4565         _cflags_speed='-O2'
4566         _cflags_size='-Os'
4567         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
4568     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
4569         _type=armasm
4570         _ident=$($_cc | head -n1)
4571         # 4509: "This form of conditional instruction is deprecated"
4572         _flags="-nologo -ignore 4509"
4573         _flags_filter=armasm_flags
4574     elif $_cc 2>&1 | grep -q Intel; then
4575         _type=icl
4576         _ident=$($_cc 2>&1 | head -n1)
4577         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
4578         # Not only is O3 broken on 13.x+ but it is slower on all previous
4579         # versions (tested) as well.
4580         _cflags_speed="-O2"
4581         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
4582         if $_cc 2>&1 | grep -q Linker; then
4583             _ld_o='-out:$@'
4584         else
4585             _ld_o='-Fe$@'
4586         fi
4587         _cc_o='-Fo$@'
4588         _cc_e='-P'
4589         _flags_filter=icl_flags
4590         _ld_lib='lib%.a'
4591         _ld_path='-libpath:'
4592         # -Qdiag-error to make icl error when seeing certain unknown arguments
4593         _flags='-nologo -Qdiag-error:4044,10157'
4594         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
4595         # with MSVC which enables it by default.
4596         _cflags='-Qms0 -Qvec- -Qsimd- -GS -fp:precise'
4597         disable stripping
4598     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
4599         # lld can emulate multiple different linkers; in ms link.exe mode,
4600         # the -? parameter gives the help output which contains an identifyable
4601         # string, while it gives an error in other modes.
4602         _type=lld-link
4603         # The link.exe mode doesn't have a switch for getting the version,
4604         # but we can force it back to gnu mode and get the version from there.
4605         _ident=$($_cc -flavor gnu --version 2>/dev/null)
4606         _ld_o='-out:$@'
4607         _flags_filter=msvc_flags
4608         _ld_lib='lib%.a'
4609         _ld_path='-libpath:'
4610     elif $_cc -nologo- 2>&1 | grep -q Microsoft || { $_cc -v 2>&1 | grep -q clang && $_cc -? > /dev/null 2>&1; }; then
4611         _type=msvc
4612         _ident=$($_cc 2>&1 | head -n1 | tr -d '\r')
4613         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
4614         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
4615         _cflags_speed="-O2"
4616         _cflags_size="-O1"
4617         _cflags_noopt="-O1"
4618         if $_cc -nologo- 2>&1 | grep -q Linker; then
4619             _ld_o='-out:$@'
4620         else
4621             _ld_o='-Fe$@'
4622         fi
4623         _cc_o='-Fo$@'
4624         _cc_e='-P -Fi$@'
4625         _flags_filter=msvc_flags
4626         _ld_lib='lib%.a'
4627         _ld_path='-libpath:'
4628         _flags='-nologo'
4629         disable stripping
4630     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
4631         _type=cparser
4632         _ident=$($_cc --version | head -n1)
4633         _depflags='-MMD'
4634         _cflags_speed='-O4'
4635         _cflags_size='-O2'
4636         _flags_filter=cparser_flags
4637     fi
4638
4639     eval ${pfx}_type=\$_type
4640     eval ${pfx}_ident=\$_ident
4641 }
4642
4643 set_ccvars(){
4644     eval ${1}_C=\${_cc_c-\${${1}_C}}
4645     eval ${1}_E=\${_cc_e-\${${1}_E}}
4646     eval ${1}_O=\${_cc_o-\${${1}_O}}
4647
4648     if [ -n "$_depflags" ]; then
4649         eval ${1}_DEPFLAGS=\$_depflags
4650     else
4651         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
4652         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
4653         eval DEP${1}FLAGS=\$_flags
4654     fi
4655 }
4656
4657 probe_cc cc "$cc" "true"
4658 cflags_filter=$_flags_filter
4659 cflags_speed=$_cflags_speed
4660 cflags_size=$_cflags_size
4661 cflags_noopt=$_cflags_noopt
4662 add_cflags $_flags $_cflags
4663 cc_ldflags=$_ldflags
4664 set_ccvars CC
4665 set_ccvars CXX
4666
4667 probe_cc hostcc "$host_cc"
4668 host_cflags_filter=$_flags_filter
4669 host_cflags_speed=$_cflags_speed
4670 add_host_cflags  $_flags $_cflags
4671 set_ccvars HOSTCC
4672
4673 test -n "$cc_type" && enable $cc_type ||
4674     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4675
4676 : ${as_default:=$cc}
4677 : ${objcc_default:=$cc}
4678 : ${dep_cc_default:=$cc}
4679 : ${ld_default:=$cc}
4680 : ${host_ld_default:=$host_cc}
4681 set_default ar as objcc dep_cc ld ln_s host_ld windres
4682
4683 probe_cc as "$as"
4684 asflags_filter=$_flags_filter
4685 add_asflags $_flags $_cflags
4686 set_ccvars AS
4687
4688 probe_cc objcc "$objcc"
4689 objcflags_filter=$_flags_filter
4690 add_objcflags $_flags $_cflags
4691 set_ccvars OBJC
4692
4693 probe_cc ld "$ld"
4694 ldflags_filter=$_flags_filter
4695 add_ldflags $_flags $_ldflags
4696 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4697 LD_O=${_ld_o-$LD_O}
4698 LD_LIB=${_ld_lib-$LD_LIB}
4699 LD_PATH=${_ld_path-$LD_PATH}
4700
4701 probe_cc hostld "$host_ld"
4702 host_ldflags_filter=$_flags_filter
4703 add_host_ldflags $_flags $_ldflags
4704 HOSTLD_O=${_ld_o-$HOSTLD_O}
4705
4706 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4707     probe_cc depcc "$dep_cc"
4708     CCDEP=${_DEPCMD:-$DEPCMD}
4709     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4710     DEPCCFLAGS=$_flags
4711 fi
4712
4713 if $ar 2>&1 | grep -q Microsoft; then
4714     arflags="-nologo"
4715     ar_o='-out:$@'
4716 elif $ar 2>&1 | grep -q "\[D\] "; then
4717     arflags="rcD"
4718     ar_o='$@'
4719 else
4720     arflags="rc"
4721     ar_o='$@'
4722 fi
4723
4724 add_cflags $extra_cflags
4725 add_cxxflags $extra_cxxflags
4726 add_objcflags $extra_objcflags
4727 add_asflags $extra_cflags
4728
4729 if test -n "$sysroot"; then
4730     case "$cc_type" in
4731         gcc|llvm_gcc|clang)
4732             add_cppflags --sysroot="$sysroot"
4733             add_ldflags --sysroot="$sysroot"
4734         ;;
4735     esac
4736 fi
4737
4738 if test "$cpu" = host; then
4739     enabled cross_compile &&
4740         die "--cpu=host makes no sense when cross-compiling."
4741
4742     case "$cc_type" in
4743         gcc|llvm_gcc)
4744             check_native(){
4745                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4746                 sed -n "/cc1.*$1=/{
4747                             s/.*$1=\\([^ ]*\\).*/\\1/
4748                             p
4749                             q
4750                         }" $TMPE
4751             }
4752             cpu=$(check_native -march || check_native -mcpu)
4753         ;;
4754         clang)
4755             check_native(){
4756                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4757                 sed -n "/cc1.*-target-cpu /{
4758                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4759                             p
4760                             q
4761                         }" $TMPE
4762             }
4763             cpu=$(check_native -march)
4764         ;;
4765     esac
4766
4767     test "${cpu:-host}" = host &&
4768         die "--cpu=host not supported with compiler $cc"
4769 fi
4770
4771 # Deal with common $arch aliases
4772 case "$arch" in
4773     aarch64|arm64)
4774         arch="aarch64"
4775     ;;
4776     arm*|iPad*|iPhone*)
4777         arch="arm"
4778     ;;
4779     mips*|IP*)
4780         case "$arch" in
4781         *el)
4782             add_cppflags -EL
4783             add_ldflags -EL
4784         ;;
4785         *eb)
4786             add_cppflags -EB
4787             add_ldflags -EB
4788         ;;
4789         esac
4790         arch="mips"
4791     ;;
4792     parisc*|hppa*)
4793         arch="parisc"
4794     ;;
4795     "Power Macintosh"|ppc*|powerpc*)
4796         arch="ppc"
4797     ;;
4798     s390|s390x)
4799         arch="s390"
4800     ;;
4801     sh4|sh)
4802         arch="sh4"
4803     ;;
4804     sun4*|sparc*)
4805         arch="sparc"
4806     ;;
4807     tilegx|tile-gx)
4808         arch="tilegx"
4809     ;;
4810     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4811         arch="x86"
4812     ;;
4813 esac
4814
4815 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4816 enable $arch
4817
4818 # Add processor-specific flags
4819 if enabled aarch64; then
4820
4821     case $cpu in
4822         armv*)
4823             cpuflags="-march=$cpu"
4824         ;;
4825         *)
4826             cpuflags="-mcpu=$cpu"
4827         ;;
4828     esac
4829
4830 elif enabled alpha; then
4831
4832     cpuflags="-mcpu=$cpu"
4833
4834 elif enabled arm; then
4835
4836     check_arm_arch() {
4837         test_cpp_condition stddef.h \
4838             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4839             $cpuflags
4840     }
4841
4842     probe_arm_arch() {
4843         if   check_arm_arch 4;        then echo armv4
4844         elif check_arm_arch 4T;       then echo armv4t
4845         elif check_arm_arch 5;        then echo armv5
4846         elif check_arm_arch 5E;       then echo armv5e
4847         elif check_arm_arch 5T;       then echo armv5t
4848         elif check_arm_arch 5TE;      then echo armv5te
4849         elif check_arm_arch 5TEJ;     then echo armv5te
4850         elif check_arm_arch 6;        then echo armv6
4851         elif check_arm_arch 6J;       then echo armv6j
4852         elif check_arm_arch 6K;       then echo armv6k
4853         elif check_arm_arch 6Z;       then echo armv6z
4854         elif check_arm_arch 6KZ;      then echo armv6zk
4855         elif check_arm_arch 6ZK;      then echo armv6zk
4856         elif check_arm_arch 6T2;      then echo armv6t2
4857         elif check_arm_arch 7;        then echo armv7
4858         elif check_arm_arch 7A  7_A;  then echo armv7-a
4859         elif check_arm_arch 7S;       then echo armv7-a
4860         elif check_arm_arch 7R  7_R;  then echo armv7-r
4861         elif check_arm_arch 7M  7_M;  then echo armv7-m
4862         elif check_arm_arch 7EM 7E_M; then echo armv7-m
4863         elif check_arm_arch 8A  8_A;  then echo armv8-a
4864         fi
4865     }
4866
4867     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4868
4869     case $cpu in
4870         armv*)
4871             cpuflags="-march=$cpu"
4872             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4873         ;;
4874         *)
4875             cpuflags="-mcpu=$cpu"
4876             case $cpu in
4877                 cortex-a*)                               subarch=armv7a  ;;
4878                 cortex-r*)                               subarch=armv7r  ;;
4879                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4880                 arm11*)                                  subarch=armv6   ;;
4881                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4882                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4883                 *)                             subarch=$(probe_arm_arch) ;;
4884             esac
4885         ;;
4886     esac
4887
4888     case "$subarch" in
4889         armv5t*)    enable fast_clz                ;;
4890         armv[6-8]*)
4891             enable fast_clz
4892             disabled fast_unaligned || enable fast_unaligned
4893             ;;
4894     esac
4895
4896 elif enabled avr32; then
4897
4898     case $cpu in
4899         ap7[02]0[0-2])
4900             subarch="avr32_ap"
4901             cpuflags="-mpart=$cpu"
4902         ;;
4903         ap)
4904             subarch="avr32_ap"
4905             cpuflags="-march=$cpu"
4906         ;;
4907         uc3[ab]*)
4908             subarch="avr32_uc"
4909             cpuflags="-mcpu=$cpu"
4910         ;;
4911         uc)
4912             subarch="avr32_uc"
4913             cpuflags="-march=$cpu"
4914         ;;
4915     esac
4916
4917 elif enabled bfin; then
4918
4919     cpuflags="-mcpu=$cpu"
4920
4921 elif enabled mips; then
4922
4923     cpuflags="-march=$cpu"
4924
4925     if [ "$cpu" != "generic" ]; then
4926         disable mips32r2
4927         disable mips32r5
4928         disable mips64r2
4929         disable mips32r6
4930         disable mips64r6
4931         disable loongson2
4932         disable loongson3
4933
4934         case $cpu in
4935             24kc|24kf*|24kec|34kc|1004kc|24kef*|34kf*|1004kf*|74kc|74kf)
4936                 enable mips32r2
4937                 disable msa
4938             ;;
4939             p5600|i6400|p6600)
4940                 disable mipsdsp
4941                 disable mipsdspr2
4942             ;;
4943             loongson*)
4944                 enable loongson2
4945                 enable loongson3
4946                 enable local_aligned
4947                 enable simd_align_16
4948                 enable fast_64bit
4949                 enable fast_clz
4950                 enable fast_cmov
4951                 enable fast_unaligned
4952                 disable aligned_stack
4953                 disable mipsdsp
4954                 disable mipsdspr2
4955                 # When gcc version less than 5.3.0, add -fno-expensive-optimizations flag.
4956                 if [ $cc == gcc ]; then
4957                     gcc_version=$(gcc -dumpversion)
4958                     if [ "$(echo "$gcc_version 5.3.0" | tr " " "\n" | sort -rV | head -n 1)" == "$gcc_version" ]; then
4959                         expensive_optimization_flag=""
4960                     else
4961                         expensive_optimization_flag="-fno-expensive-optimizations"
4962                     fi
4963                 fi
4964                 case $cpu in
4965                     loongson3*)
4966                         cpuflags="-march=loongson3a -mhard-float $expensive_optimization_flag"
4967                     ;;
4968                     loongson2e)
4969                         cpuflags="-march=loo