lavfi/opencl: add nlmeans_opencl filter
[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-cuvid          disable Nvidia CUVID support [autodetect]
326   --disable-d3d11va        disable Microsoft Direct3D 11 video acceleration code [autodetect]
327   --disable-dxva2          disable Microsoft DirectX 9 video acceleration code [autodetect]
328   --disable-ffnvcodec      disable dynamically linked Nvidia code [autodetect]
329   --enable-libdrm          enable DRM code (Linux) [no]
330   --enable-libmfx          enable Intel MediaSDK (AKA Quick Sync Video) code via libmfx [no]
331   --enable-libnpp          enable Nvidia Performance Primitives-based code [no]
332   --enable-mmal            enable Broadcom Multi-Media Abstraction Layer (Raspberry Pi) via MMAL [no]
333   --disable-nvdec          disable Nvidia video decoding acceleration (via hwaccel) [autodetect]
334   --disable-nvenc          disable Nvidia video encoding code [autodetect]
335   --enable-omx             enable OpenMAX IL code [no]
336   --enable-omx-rpi         enable OpenMAX IL code for Raspberry Pi [no]
337   --enable-rkmpp           enable Rockchip Media Process Platform code [no]
338   --disable-v4l2-m2m       disable V4L2 mem2mem code [autodetect]
339   --disable-vaapi          disable Video Acceleration API (mainly Unix/Intel) code [autodetect]
340   --disable-vdpau          disable Nvidia Video Decode and Presentation API for Unix code [autodetect]
341   --disable-videotoolbox   disable VideoToolbox code [autodetect]
342
343 Toolchain options:
344   --arch=ARCH              select architecture [$arch]
345   --cpu=CPU                select the minimum required CPU (affects
346                            instruction selection, may crash on older CPUs)
347   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
348   --progs-suffix=SUFFIX    program name suffix []
349   --enable-cross-compile   assume a cross-compiler is used
350   --sysroot=PATH           root of cross-build tree
351   --sysinclude=PATH        location of cross-build system headers
352   --target-os=OS           compiler targets OS [$target_os]
353   --target-exec=CMD        command to run executables on target
354   --target-path=DIR        path to view of build directory on target
355   --target-samples=DIR     path to samples directory on target
356   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
357   --toolchain=NAME         set tool defaults according to NAME
358                            (gcc-asan, clang-asan, gcc-msan, clang-msan,
359                            gcc-tsan, clang-tsan, gcc-usan, clang-usan,
360                            valgrind-massif, valgrind-memcheck,
361                            msvc, icl, gcov, llvm-cov, hardened)
362   --nm=NM                  use nm tool NM [$nm_default]
363   --ar=AR                  use archive tool AR [$ar_default]
364   --as=AS                  use assembler AS [$as_default]
365   --ln_s=LN_S              use symbolic link tool LN_S [$ln_s_default]
366   --strip=STRIP            use strip tool STRIP [$strip_default]
367   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
368   --x86asmexe=EXE          use nasm-compatible assembler EXE [$x86asmexe_default]
369   --cc=CC                  use C compiler CC [$cc_default]
370   --cxx=CXX                use C compiler CXX [$cxx_default]
371   --objcc=OCC              use ObjC compiler OCC [$cc_default]
372   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
373   --nvcc=NVCC              use Nvidia CUDA compiler NVCC [$nvcc_default]
374   --ld=LD                  use linker LD [$ld_default]
375   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
376   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
377   --ranlib=RANLIB          use ranlib RANLIB [$ranlib_default]
378   --doxygen=DOXYGEN        use DOXYGEN to generate API doc [$doxygen_default]
379   --host-cc=HOSTCC         use host C compiler HOSTCC
380   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
381   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
382   --host-ld=HOSTLD         use host linker HOSTLD
383   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
384   --host-extralibs=HLIBS   use libs HLIBS when linking for host
385   --host-os=OS             compiler host OS [$target_os]
386   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
387   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
388   --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
389   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
390   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
391   --extra-ldsoflags=ELDFLAGS add ELDFLAGS to LDSOFLAGS [$LDSOFLAGS]
392   --extra-libs=ELIBS       add ELIBS [$ELIBS]
393   --extra-version=STRING   version string suffix []
394   --optflags=OPTFLAGS      override optimization-related compiler flags
395   --nvccflags=NVCCFLAGS    override nvcc flags [$nvccflags_default]
396   --build-suffix=SUFFIX    library name suffix []
397   --enable-pic             build position-independent code
398   --enable-thumb           compile for Thumb instruction set
399   --enable-lto             use link-time optimization
400   --env="ENV=override"     override the environment variables
401
402 Advanced options (experts only):
403   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
404   --custom-allocator=NAME  use a supported custom allocator
405   --disable-symver         disable symbol versioning
406   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
407   --disable-safe-bitstream-reader
408                            disable buffer boundary checking in bitreaders
409                            (faster, but may crash)
410   --sws-max-filter-size=N  the max filter size swscale uses [$sws_max_filter_size_default]
411
412 Optimization options (experts only):
413   --disable-asm            disable all assembly optimizations
414   --disable-altivec        disable AltiVec optimizations
415   --disable-vsx            disable VSX optimizations
416   --disable-power8         disable POWER8 optimizations
417   --disable-amd3dnow       disable 3DNow! optimizations
418   --disable-amd3dnowext    disable 3DNow! extended optimizations
419   --disable-mmx            disable MMX optimizations
420   --disable-mmxext         disable MMXEXT optimizations
421   --disable-sse            disable SSE optimizations
422   --disable-sse2           disable SSE2 optimizations
423   --disable-sse3           disable SSE3 optimizations
424   --disable-ssse3          disable SSSE3 optimizations
425   --disable-sse4           disable SSE4 optimizations
426   --disable-sse42          disable SSE4.2 optimizations
427   --disable-avx            disable AVX optimizations
428   --disable-xop            disable XOP optimizations
429   --disable-fma3           disable FMA3 optimizations
430   --disable-fma4           disable FMA4 optimizations
431   --disable-avx2           disable AVX2 optimizations
432   --disable-avx512         disable AVX-512 optimizations
433   --disable-aesni          disable AESNI optimizations
434   --disable-armv5te        disable armv5te optimizations
435   --disable-armv6          disable armv6 optimizations
436   --disable-armv6t2        disable armv6t2 optimizations
437   --disable-vfp            disable VFP optimizations
438   --disable-neon           disable NEON optimizations
439   --disable-inline-asm     disable use of inline assembly
440   --disable-x86asm         disable use of standalone x86 assembly
441   --disable-mipsdsp        disable MIPS DSP ASE R1 optimizations
442   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
443   --disable-msa            disable MSA optimizations
444   --disable-mipsfpu        disable floating point MIPS optimizations
445   --disable-mmi            disable Loongson SIMD optimizations
446   --disable-fast-unaligned consider unaligned accesses slow
447
448 Developer options (useful when working on FFmpeg itself):
449   --disable-debug          disable debugging symbols
450   --enable-debug=LEVEL     set the debug level [$debuglevel]
451   --disable-optimizations  disable compiler optimizations
452   --enable-extra-warnings  enable more compiler warnings
453   --disable-stripping      disable stripping of executables and shared libraries
454   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
455                            2 causes a slowdown at runtime.
456   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
457   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
458                            leaks and errors, using the specified valgrind binary.
459                            Cannot be combined with --target-exec
460   --enable-ftrapv          Trap arithmetic overflows
461   --samples=PATH           location of test samples for FATE, if not set use
462                            \$FATE_SAMPLES at make invocation time.
463   --enable-neon-clobber-test check NEON registers for clobbering (should be
464                            used only for debugging purposes)
465   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
466                            should be used only for debugging purposes)
467   --enable-random          randomly enable/disable components
468   --disable-random
469   --enable-random=LIST     randomly enable/disable specific components or
470   --disable-random=LIST    component groups. LIST is a comma-separated list
471                            of NAME[:PROB] entries where NAME is a component
472                            (group) and PROB the probability associated with
473                            NAME (default 0.5).
474   --random-seed=VALUE      seed value for --enable/disable-random
475   --disable-valgrind-backtrace do not print a backtrace under Valgrind
476                            (only applies to --disable-optimizations builds)
477   --enable-ossfuzz         Enable building fuzzer tool
478   --libfuzzer=PATH         path to libfuzzer
479   --ignore-tests=TESTS     comma-separated list (without "fate-" prefix
480                            in the name) of tests whose result is ignored
481   --enable-linux-perf      enable Linux Performance Monitor API
482
483 NOTE: Object files are built at the place where configure is launched.
484 EOF
485   exit 0
486 }
487
488 if test -t 1 && which tput >/dev/null 2>&1; then
489     ncolors=$(tput colors)
490     if test -n "$ncolors" && test $ncolors -ge 8; then
491         bold_color=$(tput bold)
492         warn_color=$(tput setaf 3)
493         error_color=$(tput setaf 1)
494         reset_color=$(tput sgr0)
495     fi
496     # 72 used instead of 80 since that's the default of pr
497     ncols=$(tput cols)
498 fi
499 : ${ncols:=72}
500
501 log(){
502     echo "$@" >> $logfile
503 }
504
505 log_file(){
506     log BEGIN "$1"
507     log_file_i=1
508     while IFS= read -r log_file_line; do
509         printf '%5d\t%s\n' "$log_file_i" "$log_file_line"
510         log_file_i=$(($log_file_i+1))
511     done < "$1" >> "$logfile"
512     log END "$1"
513 }
514
515 warn(){
516     log "WARNING: $*"
517     WARNINGS="${WARNINGS}WARNING: $*\n"
518 }
519
520 die(){
521     log "$@"
522     echo "$error_color$bold_color$@$reset_color"
523     cat <<EOF
524
525 If you think configure made a mistake, make sure you are using the latest
526 version from Git.  If the latest version fails, report the problem to the
527 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
528 EOF
529     if disabled logging; then
530         cat <<EOF
531 Rerun configure with logging enabled (do not use --disable-logging), and
532 include the log this produces with your report.
533 EOF
534     else
535         cat <<EOF
536 Include the log file "$logfile" produced by configure as this will help
537 solve the problem.
538 EOF
539     fi
540     exit 1
541 }
542
543 # Avoid locale weirdness, besides we really just want to translate ASCII.
544 toupper(){
545     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
546 }
547
548 tolower(){
549     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
550 }
551
552 c_escape(){
553     echo "$*" | sed 's/["\\]/\\\0/g'
554 }
555
556 sh_quote(){
557     v=$(echo "$1" | sed "s/'/'\\\\''/g")
558     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
559     echo "$v"
560 }
561
562 cleanws(){
563     echo "$@" | sed 's/^ *//;s/[[:space:]][[:space:]]*/ /g;s/ *$//'
564 }
565
566 filter(){
567     pat=$1
568     shift
569     for v; do
570         eval "case '$v' in $pat) printf '%s ' '$v' ;; esac"
571     done
572 }
573
574 filter_out(){
575     pat=$1
576     shift
577     for v; do
578         eval "case '$v' in $pat) ;; *) printf '%s ' '$v' ;; esac"
579     done
580 }
581
582 map(){
583     m=$1
584     shift
585     for v; do eval $m; done
586 }
587
588 add_suffix(){
589     suffix=$1
590     shift
591     for v; do echo ${v}${suffix}; done
592 }
593
594 remove_suffix(){
595     suffix=$1
596     shift
597     for v; do echo ${v%$suffix}; done
598 }
599
600 set_all(){
601     value=$1
602     shift
603     for var in $*; do
604         eval $var=$value
605     done
606 }
607
608 set_weak(){
609     value=$1
610     shift
611     for var; do
612         eval : \${$var:=$value}
613     done
614 }
615
616 sanitize_var_name(){
617     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
618 }
619
620 set_sanitized(){
621     var=$1
622     shift
623     eval $(sanitize_var_name "$var")='$*'
624 }
625
626 get_sanitized(){
627     eval echo \$$(sanitize_var_name "$1")
628 }
629
630 pushvar(){
631     for pvar in $*; do
632         eval level=\${${pvar}_level:=0}
633         eval ${pvar}_${level}="\$$pvar"
634         eval ${pvar}_level=$(($level+1))
635     done
636 }
637
638 popvar(){
639     for pvar in $*; do
640         eval level=\${${pvar}_level:-0}
641         test $level = 0 && continue
642         eval level=$(($level-1))
643         eval $pvar="\${${pvar}_${level}}"
644         eval ${pvar}_level=$level
645         eval unset ${pvar}_${level}
646     done
647 }
648
649 request(){
650     for var in $*; do
651         eval ${var}_requested=yes
652         eval $var=
653     done
654 }
655
656 warn_if_gets_disabled(){
657     for var in $*; do
658         WARN_IF_GETS_DISABLED_LIST="$WARN_IF_GETS_DISABLED_LIST $var"
659     done
660 }
661
662 enable(){
663     set_all yes $*
664 }
665
666 disable(){
667     set_all no $*
668 }
669
670 disable_with_reason(){
671     disable $1
672     eval "${1}_disable_reason=\"$2\""
673     if requested $1; then
674         die "ERROR: $1 requested, but $2"
675     fi
676 }
677
678 enable_weak(){
679     set_weak yes $*
680 }
681
682 disable_weak(){
683     set_weak no $*
684 }
685
686 enable_sanitized(){
687     for var; do
688         enable $(sanitize_var_name $var)
689     done
690 }
691
692 disable_sanitized(){
693     for var; do
694         disable $(sanitize_var_name $var)
695     done
696 }
697
698 do_enable_deep(){
699     for var; do
700         enabled $var && continue
701         set -- $var
702         eval enable_deep \$${var}_select
703         var=$1
704         eval enable_deep_weak \$${var}_suggest
705     done
706 }
707
708 enable_deep(){
709     do_enable_deep $*
710     enable $*
711 }
712
713 enable_deep_weak(){
714     for var; do
715         disabled $var && continue
716         set -- $var
717         do_enable_deep $var
718         var=$1
719         enable_weak $var
720     done
721 }
722
723 requested(){
724     test "${1#!}" = "$1" && op="=" || op="!="
725     eval test "x\$${1#!}_requested" $op "xyes"
726 }
727
728 enabled(){
729     test "${1#!}" = "$1" && op="=" || op="!="
730     eval test "x\$${1#!}" $op "xyes"
731 }
732
733 disabled(){
734     test "${1#!}" = "$1" && op="=" || op="!="
735     eval test "x\$${1#!}" $op "xno"
736 }
737
738 enabled_all(){
739     for opt; do
740         enabled $opt || return 1
741     done
742 }
743
744 disabled_all(){
745     for opt; do
746         disabled $opt || return 1
747     done
748 }
749
750 enabled_any(){
751     for opt; do
752         enabled $opt && return 0
753     done
754 }
755
756 disabled_any(){
757     for opt; do
758         disabled $opt && return 0
759     done
760     return 1
761 }
762
763 set_default(){
764     for opt; do
765         eval : \${$opt:=\$${opt}_default}
766     done
767 }
768
769 is_in(){
770     value=$1
771     shift
772     for var in $*; do
773         [ $var = $value ] && return 0
774     done
775     return 1
776 }
777
778 # The cfg loop is very hot (several thousands iterations), and in bash also
779 # potentialy quite slow. Try to abort the iterations early, preferably without
780 # calling functions. 70%+ of the time cfg is already done or without deps.
781 check_deps(){
782     for cfg; do
783         eval [ x\$${cfg}_checking = xdone ] && continue
784         eval [ x\$${cfg}_checking = xinprogress ] && die "Circular dependency for $cfg."
785
786         eval "
787         dep_all=\$${cfg}_deps
788         dep_any=\$${cfg}_deps_any
789         dep_con=\$${cfg}_conflict
790         dep_sel=\$${cfg}_select
791         dep_sgs=\$${cfg}_suggest
792         dep_ifa=\$${cfg}_if
793         dep_ifn=\$${cfg}_if_any
794         "
795
796         # most of the time here $cfg has no deps - avoid costly no-op work
797         if [ "$dep_all$dep_any$dep_con$dep_sel$dep_sgs$dep_ifa$dep_ifn" ]; then
798             eval ${cfg}_checking=inprogress
799
800             set -- $cfg "$dep_all" "$dep_any" "$dep_con" "$dep_sel" "$dep_sgs" "$dep_ifa" "$dep_ifn"
801             check_deps $dep_all $dep_any $dep_con $dep_sel $dep_sgs $dep_ifa $dep_ifn
802             cfg=$1; dep_all=$2; dep_any=$3; dep_con=$4; dep_sel=$5 dep_sgs=$6; dep_ifa=$7; dep_ifn=$8
803
804             [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
805             [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
806             enabled_all  $dep_all || { disable_with_reason $cfg "not all dependencies are satisfied: $dep_all"; }
807             enabled_any  $dep_any || { disable_with_reason $cfg "not any dependency is satisfied: $dep_any"; }
808             disabled_all $dep_con || { disable_with_reason $cfg "some conflicting dependencies are unsatisfied: $dep_con"; }
809             disabled_any $dep_sel && { disable_with_reason $cfg "some selected dependency is unsatisfied: $dep_sel"; }
810
811             enabled $cfg && enable_deep_weak $dep_sel $dep_sgs
812
813             for dep in $dep_all $dep_any $dep_sel $dep_sgs; do
814                 # filter out library deps, these do not belong in extralibs
815                 is_in $dep $LIBRARY_LIST && continue
816                 enabled $dep && eval append ${cfg}_extralibs ${dep}_extralibs
817             done
818         fi
819
820         eval ${cfg}_checking=done
821     done
822 }
823
824 print_config(){
825     pfx=$1
826     files=$2
827     shift 2
828     map 'eval echo "$v \${$v:-no}"' "$@" |
829     awk "BEGIN { split(\"$files\", files) }
830         {
831             c = \"$pfx\" toupper(\$1);
832             v = \$2;
833             sub(/yes/, 1, v);
834             sub(/no/,  0, v);
835             for (f in files) {
836                 file = files[f];
837                 if (file ~ /\\.h\$/) {
838                     printf(\"#define %s %d\\n\", c, v) >>file;
839                 } else if (file ~ /\\.asm\$/) {
840                     printf(\"%%define %s %d\\n\", c, v) >>file;
841                 } else if (file ~ /\\.mak\$/) {
842                     n = -v ? \"\" : \"!\";
843                     printf(\"%s%s=yes\\n\", n, c) >>file;
844                 } else if (file ~ /\\.texi\$/) {
845                     pre = -v ? \"\" : \"@c \";
846                     yesno = \$2;
847                     c2 = tolower(c);
848                     gsub(/_/, \"-\", c2);
849                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
850                 }
851             }
852         }"
853 }
854
855 print_enabled(){
856     suf=$1
857     shift
858     for v; do
859         enabled $v && printf "%s\n" ${v%$suf}
860     done
861 }
862
863 append(){
864     var=$1
865     shift
866     eval "$var=\"\$$var $*\""
867 }
868
869 prepend(){
870     var=$1
871     shift
872     eval "$var=\"$* \$$var\""
873 }
874
875 reverse () {
876     eval '
877         reverse_out=
878         for v in $'$1'; do
879             reverse_out="$v $reverse_out"
880         done
881         '$1'=$reverse_out
882     '
883 }
884
885 # keeps the last occurence of each non-unique item
886 unique(){
887     unique_out=
888     eval unique_in=\$$1
889     reverse unique_in
890     for v in $unique_in; do
891         # " $unique_out" +space such that every item is surrounded with spaces
892         case " $unique_out" in *" $v "*) continue; esac  # already in list
893         unique_out="$unique_out$v "
894     done
895     reverse unique_out
896     eval $1=\$unique_out
897 }
898
899 resolve(){
900     resolve_out=
901     eval resolve_in=\$$1
902     for v in $resolve_in; do
903         eval 'resolve_out="$resolve_out$'$v' "'
904     done
905     eval $1=\$resolve_out
906 }
907
908 add_cppflags(){
909     append CPPFLAGS "$@"
910 }
911
912 add_cflags(){
913     append CFLAGS $($cflags_filter "$@")
914 }
915
916 add_cflags_headers(){
917     append CFLAGS_HEADERS $($cflags_filter "$@")
918 }
919
920 add_cxxflags(){
921     append CXXFLAGS $($cflags_filter "$@")
922 }
923
924 add_objcflags(){
925     append OBJCFLAGS $($objcflags_filter "$@")
926 }
927
928 add_asflags(){
929     append ASFLAGS $($asflags_filter "$@")
930 }
931
932 add_ldflags(){
933     append LDFLAGS $($ldflags_filter "$@")
934 }
935
936 add_ldexeflags(){
937     append LDEXEFLAGS $($ldflags_filter "$@")
938 }
939
940 add_ldsoflags(){
941     append LDSOFLAGS $($ldflags_filter "$@")
942 }
943
944 add_extralibs(){
945     prepend extralibs $($ldflags_filter "$@")
946 }
947
948 add_stripflags(){
949     append ASMSTRIPFLAGS "$@"
950 }
951
952 add_host_cppflags(){
953     append host_cppflags "$@"
954 }
955
956 add_host_cflags(){
957     append host_cflags $($host_cflags_filter "$@")
958 }
959
960 add_host_ldflags(){
961     append host_ldflags $($host_ldflags_filter "$@")
962 }
963
964 add_compat(){
965     append compat_objs $1
966     shift
967     map 'add_cppflags -D$v' "$@"
968 }
969
970 test_cmd(){
971     log "$@"
972     "$@" >> $logfile 2>&1
973 }
974
975 test_stat(){
976     log test_stat "$@"
977     stat "$1" >> $logfile 2>&1
978 }
979
980 cc_e(){
981     eval printf '%s\\n' $CC_E
982 }
983
984 cc_o(){
985     eval printf '%s\\n' $CC_O
986 }
987
988 as_o(){
989     eval printf '%s\\n' $AS_O
990 }
991
992 x86asm_o(){
993     eval printf '%s\\n' $X86ASM_O
994 }
995
996 ld_o(){
997     eval printf '%s\\n' $LD_O
998 }
999
1000 hostcc_e(){
1001     eval printf '%s\\n' $HOSTCC_E
1002 }
1003
1004 hostcc_o(){
1005     eval printf '%s\\n' $HOSTCC_O
1006 }
1007
1008 nvcc_o(){
1009     eval printf '%s\\n' $NVCC_O
1010 }
1011
1012 test_cc(){
1013     log test_cc "$@"
1014     cat > $TMPC
1015     log_file $TMPC
1016     test_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
1017 }
1018
1019 test_cxx(){
1020     log test_cxx "$@"
1021     cat > $TMPCPP
1022     log_file $TMPCPP
1023     test_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
1024 }
1025
1026 test_objcc(){
1027     log test_objcc "$@"
1028     cat > $TMPM
1029     log_file $TMPM
1030     test_cmd $objcc -Werror=missing-prototypes $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPM
1031 }
1032
1033 test_nvcc(){
1034     log test_nvcc "$@"
1035     cat > $TMPCU
1036     log_file $TMPCU
1037     tmpcu_=$TMPCU
1038     tmpo_=$TMPO
1039     [ -x "$(command -v cygpath)" ] && tmpcu_=$(cygpath -m $tmpcu_) && tmpo_=$(cygpath -m $tmpo_)
1040     test_cmd $nvcc -ptx $NVCCFLAGS "$@" $NVCC_C $(nvcc_o $tmpo_) $tmpcu_
1041 }
1042
1043 check_nvcc() {
1044     log check_nvcc "$@"
1045     test_nvcc <<EOF
1046 extern "C" {
1047     __global__ void hello(unsigned char *data) {}
1048 }
1049 EOF
1050 }
1051
1052 test_cpp(){
1053     log test_cpp "$@"
1054     cat > $TMPC
1055     log_file $TMPC
1056     test_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
1057 }
1058
1059 test_as(){
1060     log test_as "$@"
1061     cat > $TMPS
1062     log_file $TMPS
1063     test_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
1064 }
1065
1066 test_x86asm(){
1067     log test_x86asm "$@"
1068     echo "$1" > $TMPASM
1069     log_file $TMPASM
1070     shift
1071     test_cmd $x86asmexe $X86ASMFLAGS -Werror "$@" $(x86asm_o $TMPO) $TMPASM
1072 }
1073
1074 check_cmd(){
1075     log check_cmd "$@"
1076     cmd=$1
1077     disabled $cmd && return
1078     disable $cmd
1079     test_cmd $@ && enable $cmd
1080 }
1081
1082 check_as(){
1083     log check_as "$@"
1084     name=$1
1085     code=$2
1086     shift 2
1087     disable $name
1088     test_as $@ <<EOF && enable $name
1089 $code
1090 EOF
1091 }
1092
1093 check_inline_asm(){
1094     log check_inline_asm "$@"
1095     name="$1"
1096     code="$2"
1097     shift 2
1098     disable $name
1099     test_cc "$@" <<EOF && enable $name
1100 void foo(void){ __asm__ volatile($code); }
1101 EOF
1102 }
1103
1104 check_inline_asm_flags(){
1105     log check_inline_asm_flags "$@"
1106     name="$1"
1107     code="$2"
1108     flags=''
1109     shift 2
1110     while [ "$1" != "" ]; do
1111       append flags $1
1112       shift
1113     done;
1114     disable $name
1115     cat > $TMPC <<EOF
1116 void foo(void){ __asm__ volatile($code); }
1117 EOF
1118     log_file $TMPC
1119     test_cmd $cc $CPPFLAGS $CFLAGS $flags "$@" $CC_C $(cc_o $TMPO) $TMPC &&
1120     enable $name && add_cflags $flags && add_asflags $flags && add_ldflags $flags
1121 }
1122
1123 check_insn(){
1124     log check_insn "$@"
1125     check_inline_asm ${1}_inline "\"$2\""
1126     check_as ${1}_external "$2"
1127 }
1128
1129 check_x86asm(){
1130     log check_x86asm "$@"
1131     name=$1
1132     shift
1133     disable $name
1134     test_x86asm "$@" && enable $name
1135 }
1136
1137 test_ld(){
1138     log test_ld "$@"
1139     type=$1
1140     shift 1
1141     flags=$(filter_out '-l*|*.so' $@)
1142     libs=$(filter '-l*|*.so' $@)
1143     test_$type $($cflags_filter $flags) || return
1144     flags=$($ldflags_filter $flags)
1145     libs=$($ldflags_filter $libs)
1146     test_cmd $ld $LDFLAGS $LDEXEFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
1147 }
1148
1149 check_ld(){
1150     log check_ld "$@"
1151     type=$1
1152     name=$2
1153     shift 2
1154     disable $name
1155     test_ld $type $@ && enable $name
1156 }
1157
1158 print_include(){
1159     hdr=$1
1160     test "${hdr%.h}" = "${hdr}" &&
1161         echo "#include $hdr"    ||
1162         echo "#include <$hdr>"
1163 }
1164
1165 test_code(){
1166     log test_code "$@"
1167     check=$1
1168     headers=$2
1169     code=$3
1170     shift 3
1171     {
1172         for hdr in $headers; do
1173             print_include $hdr
1174         done
1175         echo "int main(void) { $code; return 0; }"
1176     } | test_$check "$@"
1177 }
1178
1179 check_cppflags(){
1180     log check_cppflags "$@"
1181     test_cpp "$@" <<EOF && append CPPFLAGS "$@"
1182 #include <stdlib.h>
1183 EOF
1184 }
1185
1186 test_cflags(){
1187     log test_cflags "$@"
1188     set -- $($cflags_filter "$@")
1189     test_cc "$@" <<EOF
1190 int x;
1191 EOF
1192 }
1193
1194 check_cflags(){
1195     log check_cflags "$@"
1196     test_cflags "$@" && add_cflags "$@"
1197 }
1198
1199 check_cxxflags(){
1200     log check_cxxflags "$@"
1201     set -- $($cflags_filter "$@")
1202     test_cxx "$@" <<EOF && append CXXFLAGS "$@"
1203 int x;
1204 EOF
1205 }
1206
1207 test_objcflags(){
1208     log test_objcflags "$@"
1209     set -- $($objcflags_filter "$@")
1210     test_objcc "$@" <<EOF
1211 int x;
1212 EOF
1213 }
1214
1215 check_objcflags(){
1216     log check_objcflags "$@"
1217     test_objcflags "$@" && add_objcflags "$@"
1218 }
1219
1220 test_ldflags(){
1221     log test_ldflags "$@"
1222     set -- $($ldflags_filter "$@")
1223     test_ld "cc" "$@" <<EOF
1224 int main(void){ return 0; }
1225 EOF
1226 }
1227
1228 check_ldflags(){
1229     log check_ldflags "$@"
1230     test_ldflags "$@" && add_ldflags "$@"
1231 }
1232
1233 test_stripflags(){
1234     log test_stripflags "$@"
1235     # call test_cc to get a fresh TMPO
1236     test_cc <<EOF
1237 int main(void) { return 0; }
1238 EOF
1239     test_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
1240 }
1241
1242 check_stripflags(){
1243     log check_stripflags "$@"
1244     test_stripflags "$@" && add_stripflags "$@"
1245 }
1246
1247 check_headers(){
1248     log check_headers "$@"
1249     headers=$1
1250     shift
1251     disable_sanitized $headers
1252     {
1253         for hdr in $headers; do
1254             print_include $hdr
1255         done
1256         echo "int x;"
1257     } | test_cpp "$@" && enable_sanitized $headers
1258 }
1259
1260 check_header_objcc(){
1261     log check_header_objcc "$@"
1262     rm -f -- "$TMPO"
1263     header=$1
1264     shift
1265     disable_sanitized $header
1266     {
1267        echo "#include <$header>"
1268        echo "int main(void) { return 0; }"
1269     } | test_objcc && test_stat "$TMPO" && enable_sanitized $header
1270 }
1271
1272 check_apple_framework(){
1273     log check_apple_framework "$@"
1274     framework="$1"
1275     name="$(tolower $framework)"
1276     header="${framework}/${framework}.h"
1277     disable $name
1278     check_header_objcc $header &&
1279         enable $name && eval ${name}_extralibs='"-framework $framework"'
1280 }
1281
1282 check_func(){
1283     log check_func "$@"
1284     func=$1
1285     shift
1286     disable $func
1287     test_ld "cc" "$@" <<EOF && enable $func
1288 extern int $func();
1289 int main(void){ $func(); }
1290 EOF
1291 }
1292
1293 check_complexfunc(){
1294     log check_complexfunc "$@"
1295     func=$1
1296     narg=$2
1297     shift 2
1298     test $narg = 2 && args="f, g" || args="f * I"
1299     disable $func
1300     test_ld "cc" "$@" <<EOF && enable $func
1301 #include <complex.h>
1302 #include <math.h>
1303 float foo(complex float f, complex float g) { return $func($args); }
1304 int main(void){ return (int) foo; }
1305 EOF
1306 }
1307
1308 check_mathfunc(){
1309     log check_mathfunc "$@"
1310     func=$1
1311     narg=$2
1312     shift 2
1313     test $narg = 2 && args="f, g" || args="f"
1314     disable $func
1315     test_ld "cc" "$@" <<EOF && enable $func
1316 #include <math.h>
1317 float foo(float f, float g) { return $func($args); }
1318 int main(void){ return (int) foo; }
1319 EOF
1320 }
1321
1322 check_func_headers(){
1323     log check_func_headers "$@"
1324     headers=$1
1325     funcs=$2
1326     shift 2
1327     {
1328         for hdr in $headers; do
1329             print_include $hdr
1330         done
1331         echo "#include <stdint.h>"
1332         for func in $funcs; do
1333             echo "long check_$func(void) { return (long) $func; }"
1334         done
1335         echo "int main(void) { int ret = 0;"
1336         # LTO could optimize out the test functions without this
1337         for func in $funcs; do
1338             echo " ret |= ((intptr_t)check_$func) & 0xFFFF;"
1339         done
1340         echo "return ret; }"
1341     } | test_ld "cc" "$@" && enable $funcs && enable_sanitized $headers
1342 }
1343
1344 check_class_headers_cpp(){
1345     log check_class_headers_cpp "$@"
1346     headers=$1
1347     classes=$2
1348     shift 2
1349     {
1350         for hdr in $headers; do
1351             echo "#include <$hdr>"
1352         done
1353         echo "int main(void) { "
1354         i=1
1355         for class in $classes; do
1356             echo "$class obj$i;"
1357             i=$(expr $i + 1)
1358         done
1359         echo "return 0; }"
1360     } | test_ld "cxx" "$@" && enable $funcs && enable_sanitized $headers
1361 }
1362
1363 test_cpp_condition(){
1364     log test_cpp_condition "$@"
1365     header=$1
1366     condition=$2
1367     shift 2
1368     test_cpp "$@" <<EOF
1369 #include <$header>
1370 #if !($condition)
1371 #error "unsatisfied condition: $condition"
1372 #endif
1373 EOF
1374 }
1375
1376 check_cpp_condition(){
1377     log check_cpp_condition "$@"
1378     name=$1
1379     shift 1
1380     disable $name
1381     test_cpp_condition "$@" && enable $name
1382 }
1383
1384 test_cflags_cc(){
1385     log test_cflags_cc "$@"
1386     flags=$1
1387     header=$2
1388     condition=$3
1389     shift 3
1390     set -- $($cflags_filter "$flags")
1391     test_cc "$@" <<EOF
1392 #include <$header>
1393 #if !($condition)
1394 #error "unsatisfied condition: $condition"
1395 #endif
1396 EOF
1397 }
1398
1399 check_lib(){
1400     log check_lib "$@"
1401     name="$1"
1402     headers="$2"
1403     funcs="$3"
1404     shift 3
1405     disable $name
1406     check_func_headers "$headers" "$funcs" "$@" &&
1407         enable $name && eval ${name}_extralibs="\$@"
1408 }
1409
1410 check_lib_cpp(){
1411     log check_lib_cpp "$@"
1412     name="$1"
1413     headers="$2"
1414     classes="$3"
1415     shift 3
1416     disable $name
1417     check_class_headers_cpp "$headers" "$classes" "$@" &&
1418         enable $name && eval ${name}_extralibs="\$@"
1419 }
1420
1421 test_pkg_config(){
1422     log test_pkg_config "$@"
1423     name="$1"
1424     pkg_version="$2"
1425     pkg="${2%% *}"
1426     headers="$3"
1427     funcs="$4"
1428     shift 4
1429     disable $name
1430     test_cmd $pkg_config --exists --print-errors $pkg_version || return
1431     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1432     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1433     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1434         enable $name &&
1435         set_sanitized "${name}_cflags"    $pkg_cflags &&
1436         set_sanitized "${name}_extralibs" $pkg_libs
1437 }
1438
1439 check_pkg_config(){
1440     log check_pkg_config "$@"
1441     name="$1"
1442     test_pkg_config "$@" &&
1443         eval add_cflags \$${name}_cflags
1444 }
1445
1446 test_exec(){
1447     test_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1448 }
1449
1450 check_exec_crash(){
1451     log check_exec_crash "$@"
1452     code=$(cat)
1453
1454     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1455     # are safe but may not be available everywhere.  Thus we use
1456     # raise(SIGTERM) instead.  The check is run in a subshell so we
1457     # can redirect the "Terminated" message from the shell.  SIGBUS
1458     # is not defined by standard C so it is used conditionally.
1459
1460     (test_exec "$@") >> $logfile 2>&1 <<EOF
1461 #include <signal.h>
1462 static void sighandler(int sig){
1463     raise(SIGTERM);
1464 }
1465 int foo(void){
1466     $code
1467 }
1468 int (*func_ptr)(void) = foo;
1469 int main(void){
1470     signal(SIGILL, sighandler);
1471     signal(SIGFPE, sighandler);
1472     signal(SIGSEGV, sighandler);
1473 #ifdef SIGBUS
1474     signal(SIGBUS, sighandler);
1475 #endif
1476     return func_ptr();
1477 }
1478 EOF
1479 }
1480
1481 check_type(){
1482     log check_type "$@"
1483     headers=$1
1484     type=$2
1485     shift 2
1486     disable_sanitized "$type"
1487     test_code cc "$headers" "$type v" "$@" && enable_sanitized "$type"
1488 }
1489
1490 check_struct(){
1491     log check_struct "$@"
1492     headers=$1
1493     struct=$2
1494     member=$3
1495     shift 3
1496     disable_sanitized "${struct}_${member}"
1497     test_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1498         enable_sanitized "${struct}_${member}"
1499 }
1500
1501 check_builtin(){
1502     log check_builtin "$@"
1503     name=$1
1504     headers=$2
1505     builtin=$3
1506     shift 3
1507     disable "$name"
1508     test_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1509 }
1510
1511 check_compile_assert(){
1512     log check_compile_assert "$@"
1513     name=$1
1514     headers=$2
1515     condition=$3
1516     shift 3
1517     disable "$name"
1518     test_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1519 }
1520
1521 check_cc(){
1522     log check_cc "$@"
1523     name=$1
1524     shift
1525     disable "$name"
1526     test_code cc "$@" && enable "$name"
1527 }
1528
1529 require(){
1530     log require "$@"
1531     name_version="$1"
1532     name="${1%% *}"
1533     shift
1534     check_lib $name "$@" || die "ERROR: $name_version not found"
1535 }
1536
1537 require_cc(){
1538     log require_cc "$@"
1539     name="$1"
1540     check_cc "$@" || die "ERROR: $name failed"
1541 }
1542
1543 require_cpp(){
1544     name="$1"
1545     headers="$2"
1546     classes="$3"
1547     shift 3
1548     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1549 }
1550
1551 require_headers(){
1552     log require_headers "$@"
1553     headers="$1"
1554     check_headers "$@" || die "ERROR: $headers not found"
1555 }
1556
1557 require_cpp_condition(){
1558     log require_cpp_condition "$@"
1559     condition="$3"
1560     check_cpp_condition "$@" || die "ERROR: $condition not satisfied"
1561 }
1562
1563 require_pkg_config(){
1564     log require_pkg_config "$@"
1565     pkg_version="$2"
1566     check_pkg_config "$@" || die "ERROR: $pkg_version not found using pkg-config$pkg_config_fail_message"
1567 }
1568
1569 test_host_cc(){
1570     log test_host_cc "$@"
1571     cat > $TMPC
1572     log_file $TMPC
1573     test_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1574 }
1575
1576 test_host_cpp(){
1577     log test_host_cpp "$@"
1578     cat > $TMPC
1579     log_file $TMPC
1580     test_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1581 }
1582
1583 check_host_cppflags(){
1584     log check_host_cppflags "$@"
1585     test_host_cpp "$@" <<EOF && append host_cppflags "$@"
1586 #include <stdlib.h>
1587 EOF
1588 }
1589
1590 check_host_cflags(){
1591     log check_host_cflags "$@"
1592     set -- $($host_cflags_filter "$@")
1593     test_host_cc "$@" <<EOF && append host_cflags "$@"
1594 int x;
1595 EOF
1596 }
1597
1598 test_host_cpp_condition(){
1599     log test_host_cpp_condition "$@"
1600     header=$1
1601     condition=$2
1602     shift 2
1603     test_host_cpp "$@" <<EOF
1604 #include <$header>
1605 #if !($condition)
1606 #error "unsatisfied condition: $condition"
1607 #endif
1608 EOF
1609 }
1610
1611 check_host_cpp_condition(){
1612     log check_host_cpp_condition "$@"
1613     name=$1
1614     shift 1
1615     disable $name
1616     test_host_cpp_condition "$@" && enable $name
1617 }
1618
1619 cp_if_changed(){
1620     cmp -s "$1" "$2" && { test "$quiet" != "yes" && echo "$2 is unchanged"; } && return
1621     mkdir -p "$(dirname $2)"
1622     cp -f "$1" "$2"
1623 }
1624
1625 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1626 # system-dependent things.
1627
1628 AVCODEC_COMPONENTS="
1629     bsfs
1630     decoders
1631     encoders
1632     hwaccels
1633     parsers
1634 "
1635
1636 AVDEVICE_COMPONENTS="
1637     indevs
1638     outdevs
1639 "
1640
1641 AVFILTER_COMPONENTS="
1642     filters
1643 "
1644
1645 AVFORMAT_COMPONENTS="
1646     demuxers
1647     muxers
1648     protocols
1649 "
1650
1651 COMPONENT_LIST="
1652     $AVCODEC_COMPONENTS
1653     $AVDEVICE_COMPONENTS
1654     $AVFILTER_COMPONENTS
1655     $AVFORMAT_COMPONENTS
1656 "
1657
1658 EXAMPLE_LIST="
1659     avio_dir_cmd_example
1660     avio_reading_example
1661     decode_audio_example
1662     decode_video_example
1663     demuxing_decoding_example
1664     encode_audio_example
1665     encode_video_example
1666     extract_mvs_example
1667     filter_audio_example
1668     filtering_audio_example
1669     filtering_video_example
1670     http_multiclient_example
1671     hw_decode_example
1672     metadata_example
1673     muxing_example
1674     qsvdec_example
1675     remuxing_example
1676     resampling_audio_example
1677     scaling_video_example
1678     transcode_aac_example
1679     transcoding_example
1680     vaapi_encode_example
1681     vaapi_transcode_example
1682 "
1683
1684 EXTERNAL_AUTODETECT_LIBRARY_LIST="
1685     alsa
1686     appkit
1687     avfoundation
1688     bzlib
1689     coreimage
1690     iconv
1691     libxcb
1692     libxcb_shm
1693     libxcb_shape
1694     libxcb_xfixes
1695     lzma
1696     schannel
1697     sdl2
1698     securetransport
1699     sndio
1700     xlib
1701     zlib
1702 "
1703
1704 EXTERNAL_LIBRARY_GPL_LIST="
1705     avisynth
1706     frei0r
1707     libcdio
1708     libdavs2
1709     librubberband
1710     libvidstab
1711     libx264
1712     libx265
1713     libxavs
1714     libxavs2
1715     libxvid
1716 "
1717
1718 EXTERNAL_LIBRARY_NONFREE_LIST="
1719     decklink
1720     libfdk_aac
1721     openssl
1722     libtls
1723 "
1724
1725 EXTERNAL_LIBRARY_VERSION3_LIST="
1726     gmp
1727     libaribb24
1728     liblensfun
1729     libopencore_amrnb
1730     libopencore_amrwb
1731     libvmaf
1732     libvo_amrwbenc
1733     mbedtls
1734     rkmpp
1735 "
1736
1737 EXTERNAL_LIBRARY_GPLV3_LIST="
1738     libsmbclient
1739 "
1740
1741 EXTERNAL_LIBRARY_LIST="
1742     $EXTERNAL_LIBRARY_GPL_LIST
1743     $EXTERNAL_LIBRARY_NONFREE_LIST
1744     $EXTERNAL_LIBRARY_VERSION3_LIST
1745     $EXTERNAL_LIBRARY_GPLV3_LIST
1746     chromaprint
1747     gcrypt
1748     gnutls
1749     jni
1750     ladspa
1751     libaom
1752     libass
1753     libbluray
1754     libbs2b
1755     libcaca
1756     libcelt
1757     libcodec2
1758     libdav1d
1759     libdc1394
1760     libdrm
1761     libflite
1762     libfontconfig
1763     libfreetype
1764     libfribidi
1765     libgme
1766     libgsm
1767     libiec61883
1768     libilbc
1769     libjack
1770     libklvanc
1771     libkvazaar
1772     libmodplug
1773     libmp3lame
1774     libmysofa
1775     libopencv
1776     libopenh264
1777     libopenjpeg
1778     libopenmpt
1779     libopus
1780     libpulse
1781     librsvg
1782     librtmp
1783     libshine
1784     libsmbclient
1785     libsnappy
1786     libsoxr
1787     libspeex
1788     libsrt
1789     libssh
1790     libtensorflow
1791     libtesseract
1792     libtheora
1793     libtwolame
1794     libv4l2
1795     libvorbis
1796     libvpx
1797     libwavpack
1798     libwebp
1799     libxml2
1800     libzimg
1801     libzmq
1802     libzvbi
1803     lv2
1804     mediacodec
1805     openal
1806     opengl
1807     pocketsphinx
1808     vapoursynth
1809 "
1810
1811 HWACCEL_AUTODETECT_LIBRARY_LIST="
1812     amf
1813     audiotoolbox
1814     crystalhd
1815     cuda
1816     cuvid
1817     d3d11va
1818     dxva2
1819     ffnvcodec
1820     nvdec
1821     nvenc
1822     vaapi
1823     vdpau
1824     videotoolbox
1825     v4l2_m2m
1826     xvmc
1827 "
1828
1829 # catchall list of things that require external libs to link
1830 EXTRALIBS_LIST="
1831     cpu_init
1832     cws2fws
1833 "
1834
1835 HWACCEL_LIBRARY_NONFREE_LIST="
1836     cuda_nvcc
1837     cuda_sdk
1838     libnpp
1839 "
1840
1841 HWACCEL_LIBRARY_LIST="
1842     $HWACCEL_LIBRARY_NONFREE_LIST
1843     libmfx
1844     mmal
1845     omx
1846     opencl
1847 "
1848
1849 DOCUMENT_LIST="
1850     doc
1851     htmlpages
1852     manpages
1853     podpages
1854     txtpages
1855 "
1856
1857 FEATURE_LIST="
1858     ftrapv
1859     gray
1860     hardcoded_tables
1861     omx_rpi
1862     runtime_cpudetect
1863     safe_bitstream_reader
1864     shared
1865     small
1866     static
1867     swscale_alpha
1868 "
1869
1870 # this list should be kept in linking order
1871 LIBRARY_LIST="
1872     avdevice
1873     avfilter
1874     swscale
1875     postproc
1876     avformat
1877     avcodec
1878     swresample
1879     avresample
1880     avutil
1881 "
1882
1883 LICENSE_LIST="
1884     gpl
1885     nonfree
1886     version3
1887 "
1888
1889 PROGRAM_LIST="
1890     ffplay
1891     ffprobe
1892     ffmpeg
1893 "
1894
1895 SUBSYSTEM_LIST="
1896     dct
1897     dwt
1898     error_resilience
1899     faan
1900     fast_unaligned
1901     fft
1902     lsp
1903     lzo
1904     mdct
1905     pixelutils
1906     network
1907     rdft
1908 "
1909
1910 # COMPONENT_LIST needs to come last to ensure correct dependency checking
1911 CONFIG_LIST="
1912     $DOCUMENT_LIST
1913     $EXAMPLE_LIST
1914     $EXTERNAL_LIBRARY_LIST
1915     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1916     $HWACCEL_LIBRARY_LIST
1917     $HWACCEL_AUTODETECT_LIBRARY_LIST
1918     $FEATURE_LIST
1919     $LICENSE_LIST
1920     $LIBRARY_LIST
1921     $PROGRAM_LIST
1922     $SUBSYSTEM_LIST
1923     autodetect
1924     fontconfig
1925     linux_perf
1926     memory_poisoning
1927     neon_clobber_test
1928     ossfuzz
1929     pic
1930     thumb
1931     valgrind_backtrace
1932     xmm_clobber_test
1933     $COMPONENT_LIST
1934 "
1935
1936 THREADS_LIST="
1937     pthreads
1938     os2threads
1939     w32threads
1940 "
1941
1942 ATOMICS_LIST="
1943     atomics_gcc
1944     atomics_suncc
1945     atomics_win32
1946 "
1947
1948 AUTODETECT_LIBS="
1949     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1950     $HWACCEL_AUTODETECT_LIBRARY_LIST
1951     $THREADS_LIST
1952 "
1953
1954 ARCH_LIST="
1955     aarch64
1956     alpha
1957     arm
1958     avr32
1959     avr32_ap
1960     avr32_uc
1961     bfin
1962     ia64
1963     m68k
1964     mips
1965     mips64
1966     parisc
1967     ppc
1968     ppc64
1969     s390
1970     sh4
1971     sparc
1972     sparc64
1973     tilegx
1974     tilepro
1975     tomi
1976     x86
1977     x86_32
1978     x86_64
1979 "
1980
1981 ARCH_EXT_LIST_ARM="
1982     armv5te
1983     armv6
1984     armv6t2
1985     armv8
1986     neon
1987     vfp
1988     vfpv3
1989     setend
1990 "
1991
1992 ARCH_EXT_LIST_MIPS="
1993     mipsfpu
1994     mips32r2
1995     mips32r5
1996     mips64r2
1997     mips32r6
1998     mips64r6
1999     mipsdsp
2000     mipsdspr2
2001     msa
2002 "
2003
2004 ARCH_EXT_LIST_LOONGSON="
2005     loongson2
2006     loongson3
2007     mmi
2008 "
2009
2010 ARCH_EXT_LIST_X86_SIMD="
2011     aesni
2012     amd3dnow
2013     amd3dnowext
2014     avx
2015     avx2
2016     avx512
2017     fma3
2018     fma4
2019     mmx
2020     mmxext
2021     sse
2022     sse2
2023     sse3
2024     sse4
2025     sse42
2026     ssse3
2027     xop
2028 "
2029
2030 ARCH_EXT_LIST_PPC="
2031     altivec
2032     dcbzl
2033     ldbrx
2034     power8
2035     ppc4xx
2036     vsx
2037 "
2038
2039 ARCH_EXT_LIST_X86="
2040     $ARCH_EXT_LIST_X86_SIMD
2041     cpunop
2042     i686
2043 "
2044
2045 ARCH_EXT_LIST="
2046     $ARCH_EXT_LIST_ARM
2047     $ARCH_EXT_LIST_PPC
2048     $ARCH_EXT_LIST_X86
2049     $ARCH_EXT_LIST_MIPS
2050     $ARCH_EXT_LIST_LOONGSON
2051 "
2052
2053 ARCH_FEATURES="
2054     aligned_stack
2055     fast_64bit
2056     fast_clz
2057     fast_cmov
2058     local_aligned
2059     simd_align_16
2060     simd_align_32
2061     simd_align_64
2062 "
2063
2064 BUILTIN_LIST="
2065     atomic_cas_ptr
2066     machine_rw_barrier
2067     MemoryBarrier
2068     mm_empty
2069     rdtsc
2070     sem_timedwait
2071     sync_val_compare_and_swap
2072 "
2073 HAVE_LIST_CMDLINE="
2074     inline_asm
2075     symver
2076     x86asm
2077 "
2078
2079 HAVE_LIST_PUB="
2080     bigendian
2081     fast_unaligned
2082 "
2083
2084 HEADERS_LIST="
2085     arpa_inet_h
2086     asm_types_h
2087     cdio_paranoia_h
2088     cdio_paranoia_paranoia_h
2089     cuda_h
2090     dispatch_dispatch_h
2091     dev_bktr_ioctl_bt848_h
2092     dev_bktr_ioctl_meteor_h
2093     dev_ic_bt8xx_h
2094     dev_video_bktr_ioctl_bt848_h
2095     dev_video_meteor_ioctl_meteor_h
2096     direct_h
2097     dirent_h
2098     dxgidebug_h
2099     dxva_h
2100     ES2_gl_h
2101     gsm_h
2102     io_h
2103     linux_perf_event_h
2104     machine_ioctl_bt848_h
2105     machine_ioctl_meteor_h
2106     malloc_h
2107     opencv2_core_core_c_h
2108     OpenGL_gl3_h
2109     poll_h
2110     sys_param_h
2111     sys_resource_h
2112     sys_select_h
2113     sys_soundcard_h
2114     sys_time_h
2115     sys_un_h
2116     sys_videoio_h
2117     termios_h
2118     udplite_h
2119     unistd_h
2120     valgrind_valgrind_h
2121     windows_h
2122     winsock2_h
2123 "
2124
2125 INTRINSICS_LIST="
2126     intrinsics_neon
2127 "
2128
2129 COMPLEX_FUNCS="
2130     cabs
2131     cexp
2132 "
2133
2134 MATH_FUNCS="
2135     atanf
2136     atan2f
2137     cbrt
2138     cbrtf
2139     copysign
2140     cosf
2141     erf
2142     exp2
2143     exp2f
2144     expf
2145     hypot
2146     isfinite
2147     isinf
2148     isnan
2149     ldexpf
2150     llrint
2151     llrintf
2152     log2
2153     log2f
2154     log10f
2155     lrint
2156     lrintf
2157     powf
2158     rint
2159     round
2160     roundf
2161     sinf
2162     trunc
2163     truncf
2164 "
2165
2166 SYSTEM_FEATURES="
2167     dos_paths
2168     libc_msvcrt
2169     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
2170     section_data_rel_ro
2171     threads
2172     uwp
2173     winrt
2174 "
2175
2176 SYSTEM_FUNCS="
2177     access
2178     aligned_malloc
2179     arc4random
2180     clock_gettime
2181     closesocket
2182     CommandLineToArgvW
2183     fcntl
2184     getaddrinfo
2185     gethrtime
2186     getopt
2187     GetProcessAffinityMask
2188     GetProcessMemoryInfo
2189     GetProcessTimes
2190     getrusage
2191     GetSystemTimeAsFileTime
2192     gettimeofday
2193     glob
2194     glXGetProcAddress
2195     gmtime_r
2196     inet_aton
2197     isatty
2198     kbhit
2199     localtime_r
2200     lstat
2201     lzo1x_999_compress
2202     mach_absolute_time
2203     MapViewOfFile
2204     memalign
2205     mkstemp
2206     mmap
2207     mprotect
2208     nanosleep
2209     PeekNamedPipe
2210     posix_memalign
2211     pthread_cancel
2212     sched_getaffinity
2213     SecItemImport
2214     SetConsoleTextAttribute
2215     SetConsoleCtrlHandler
2216     setmode
2217     setrlimit
2218     Sleep
2219     strerror_r
2220     sysconf
2221     sysctl
2222     usleep
2223     UTGetOSTypeFromString
2224     VirtualAlloc
2225     wglGetProcAddress
2226 "
2227
2228 SYSTEM_LIBRARIES="
2229     bcrypt
2230     vaapi_drm
2231     vaapi_x11
2232     vdpau_x11
2233 "
2234
2235 TOOLCHAIN_FEATURES="
2236     as_arch_directive
2237     as_dn_directive
2238     as_fpu_directive
2239     as_func
2240     as_object_arch
2241     asm_mod_q
2242     blocks_extension
2243     ebp_available
2244     ebx_available
2245     gnu_as
2246     gnu_windres
2247     ibm_asm
2248     inline_asm_direct_symbol_refs
2249     inline_asm_labels
2250     inline_asm_nonlocal_labels
2251     pragma_deprecated
2252     rsync_contimeout
2253     symver_asm_label
2254     symver_gnu_asm
2255     vfp_args
2256     xform_asm
2257     xmm_clobbers
2258 "
2259
2260 TYPES_LIST="
2261     kCMVideoCodecType_HEVC
2262     kCVPixelFormatType_420YpCbCr10BiPlanarVideoRange
2263     socklen_t
2264     struct_addrinfo
2265     struct_group_source_req
2266     struct_ip_mreq_source
2267     struct_ipv6_mreq
2268     struct_msghdr_msg_flags
2269     struct_pollfd
2270     struct_rusage_ru_maxrss
2271     struct_sctp_event_subscribe
2272     struct_sockaddr_in6
2273     struct_sockaddr_sa_len
2274     struct_sockaddr_storage
2275     struct_stat_st_mtim_tv_nsec
2276     struct_v4l2_frmivalenum_discrete
2277 "
2278
2279 HAVE_LIST="
2280     $ARCH_EXT_LIST
2281     $(add_suffix _external $ARCH_EXT_LIST)
2282     $(add_suffix _inline   $ARCH_EXT_LIST)
2283     $ARCH_FEATURES
2284     $BUILTIN_LIST
2285     $COMPLEX_FUNCS
2286     $HAVE_LIST_CMDLINE
2287     $HAVE_LIST_PUB
2288     $HEADERS_LIST
2289     $INTRINSICS_LIST
2290     $MATH_FUNCS
2291     $SYSTEM_FEATURES
2292     $SYSTEM_FUNCS
2293     $SYSTEM_LIBRARIES
2294     $THREADS_LIST
2295     $TOOLCHAIN_FEATURES
2296     $TYPES_LIST
2297     makeinfo
2298     makeinfo_html
2299     opencl_d3d11
2300     opencl_drm_arm
2301     opencl_drm_beignet
2302     opencl_dxva2
2303     opencl_vaapi_beignet
2304     opencl_vaapi_intel_media
2305     perl
2306     pod2man
2307     texi2html
2308 "
2309
2310 # options emitted with CONFIG_ prefix but not available on the command line
2311 CONFIG_EXTRA="
2312     aandcttables
2313     ac3dsp
2314     adts_header
2315     audio_frame_queue
2316     audiodsp
2317     blockdsp
2318     bswapdsp
2319     cabac
2320     cbs
2321     cbs_av1
2322     cbs_h264
2323     cbs_h265
2324     cbs_jpeg
2325     cbs_mpeg2
2326     cbs_vp9
2327     dirac_parse
2328     dnn
2329     dvprofile
2330     exif
2331     faandct
2332     faanidct
2333     fdctdsp
2334     flacdsp
2335     fmtconvert
2336     frame_thread_encoder
2337     g722dsp
2338     golomb
2339     gplv3
2340     h263dsp
2341     h264chroma
2342     h264dsp
2343     h264parse
2344     h264pred
2345     h264qpel
2346     hevcparse
2347     hpeldsp
2348     huffman
2349     huffyuvdsp
2350     huffyuvencdsp
2351     idctdsp
2352     iirfilter
2353     mdct15
2354     intrax8
2355     iso_media
2356     ividsp
2357     jpegtables
2358     lgplv3
2359     libx262
2360     llauddsp
2361     llviddsp
2362     llvidencdsp
2363     lpc
2364     lzf
2365     me_cmp
2366     mpeg_er
2367     mpegaudio
2368     mpegaudiodsp
2369     mpegaudioheader
2370     mpegvideo
2371     mpegvideoenc
2372     mss34dsp
2373     pixblockdsp
2374     qpeldsp
2375     qsv
2376     qsvdec
2377     qsvenc
2378     qsvvpp
2379     rangecoder
2380     riffdec
2381     riffenc
2382     rtpdec
2383     rtpenc_chain
2384     rv34dsp
2385     scene_sad
2386     sinewin
2387     snappy
2388     srtp
2389     startcode
2390     texturedsp
2391     texturedspenc
2392     tpeldsp
2393     vaapi_1
2394     vaapi_encode
2395     vc1dsp
2396     videodsp
2397     vp3dsp
2398     vp56dsp
2399     vp8dsp
2400     wma_freqs
2401     wmv2dsp
2402 "
2403
2404 CMDLINE_SELECT="
2405     $ARCH_EXT_LIST
2406     $CONFIG_LIST
2407     $HAVE_LIST_CMDLINE
2408     $THREADS_LIST
2409     asm
2410     cross_compile
2411     debug
2412     extra_warnings
2413     logging
2414     lto
2415     optimizations
2416     rpath
2417     stripping
2418 "
2419
2420 PATHS_LIST="
2421     bindir
2422     datadir
2423     docdir
2424     incdir
2425     libdir
2426     mandir
2427     pkgconfigdir
2428     prefix
2429     shlibdir
2430     install_name_dir
2431 "
2432
2433 CMDLINE_SET="
2434     $PATHS_LIST
2435     ar
2436     arch
2437     as
2438     assert_level
2439     build_suffix
2440     cc
2441     objcc
2442     cpu
2443     cross_prefix
2444     custom_allocator
2445     cxx
2446     dep_cc
2447     doxygen
2448     env
2449     extra_version
2450     gas
2451     host_cc
2452     host_cflags
2453     host_extralibs
2454     host_ld
2455     host_ldflags
2456     host_os
2457     ignore_tests
2458     install
2459     ld
2460     ln_s
2461     logfile
2462     malloc_prefix
2463     nm
2464     optflags
2465     nvcc
2466     nvccflags
2467     pkg_config
2468     pkg_config_flags
2469     progs_suffix
2470     random_seed
2471     ranlib
2472     samples
2473     strip
2474     sws_max_filter_size
2475     sysinclude
2476     sysroot
2477     target_exec
2478     target_os
2479     target_path
2480     target_samples
2481     tempprefix
2482     toolchain
2483     valgrind
2484     windres
2485     x86asmexe
2486 "
2487
2488 CMDLINE_APPEND="
2489     extra_cflags
2490     extra_cxxflags
2491     extra_objcflags
2492     host_cppflags
2493 "
2494
2495 # code dependency declarations
2496
2497 # architecture extensions
2498
2499 armv5te_deps="arm"
2500 armv6_deps="arm"
2501 armv6t2_deps="arm"
2502 armv8_deps="aarch64"
2503 neon_deps_any="aarch64 arm"
2504 intrinsics_neon_deps="neon"
2505 vfp_deps_any="aarch64 arm"
2506 vfpv3_deps="vfp"
2507 setend_deps="arm"
2508
2509 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2510
2511 altivec_deps="ppc"
2512 dcbzl_deps="ppc"
2513 ldbrx_deps="ppc"
2514 ppc4xx_deps="ppc"
2515 vsx_deps="altivec"
2516 power8_deps="vsx"
2517
2518 loongson2_deps="mips"
2519 loongson3_deps="mips"
2520 mips32r2_deps="mips"
2521 mips32r5_deps="mips"
2522 mips32r6_deps="mips"
2523 mips64r2_deps="mips"
2524 mips64r6_deps="mips"
2525 mipsfpu_deps="mips"
2526 mipsdsp_deps="mips"
2527 mipsdspr2_deps="mips"
2528 mmi_deps="mips"
2529 msa_deps="mipsfpu"
2530
2531 cpunop_deps="i686"
2532 x86_64_select="i686"
2533 x86_64_suggest="fast_cmov"
2534
2535 amd3dnow_deps="mmx"
2536 amd3dnowext_deps="amd3dnow"
2537 i686_deps="x86"
2538 mmx_deps="x86"
2539 mmxext_deps="mmx"
2540 sse_deps="mmxext"
2541 sse2_deps="sse"
2542 sse3_deps="sse2"
2543 ssse3_deps="sse3"
2544 sse4_deps="ssse3"
2545 sse42_deps="sse4"
2546 aesni_deps="sse42"
2547 avx_deps="sse42"
2548 xop_deps="avx"
2549 fma3_deps="avx"
2550 fma4_deps="avx"
2551 avx2_deps="avx"
2552 avx512_deps="avx2"
2553
2554 mmx_external_deps="x86asm"
2555 mmx_inline_deps="inline_asm x86"
2556 mmx_suggest="mmx_external mmx_inline"
2557
2558 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2559     eval dep=\$${ext}_deps
2560     eval ${ext}_external_deps='"${dep}_external"'
2561     eval ${ext}_inline_deps='"${dep}_inline"'
2562     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2563 done
2564
2565 aligned_stack_if_any="aarch64 ppc x86"
2566 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2567 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2568 fast_unaligned_if_any="aarch64 ppc x86"
2569 simd_align_16_if_any="altivec neon sse"
2570 simd_align_32_if_any="avx"
2571 simd_align_64_if_any="avx512"
2572
2573 # system capabilities
2574 linux_perf_deps="linux_perf_event_h"
2575 symver_if_any="symver_asm_label symver_gnu_asm"
2576 valgrind_backtrace_conflict="optimizations"
2577 valgrind_backtrace_deps="valgrind_valgrind_h"
2578
2579 # threading support
2580 atomics_gcc_if="sync_val_compare_and_swap"
2581 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2582 atomics_win32_if="MemoryBarrier"
2583 atomics_native_if_any="$ATOMICS_LIST"
2584 w32threads_deps="atomics_native"
2585 threads_if_any="$THREADS_LIST"
2586
2587 # subsystems
2588 cbs_av1_select="cbs"
2589 cbs_h264_select="cbs golomb"
2590 cbs_h265_select="cbs golomb"
2591 cbs_jpeg_select="cbs"
2592 cbs_mpeg2_select="cbs"
2593 cbs_vp9_select="cbs"
2594 dct_select="rdft"
2595 dirac_parse_select="golomb"
2596 dnn_suggest="libtensorflow"
2597 error_resilience_select="me_cmp"
2598 faandct_deps="faan"
2599 faandct_select="fdctdsp"
2600 faanidct_deps="faan"
2601 faanidct_select="idctdsp"
2602 h264dsp_select="startcode"
2603 hevcparse_select="golomb"
2604 frame_thread_encoder_deps="encoders threads"
2605 intrax8_select="blockdsp idctdsp"
2606 mdct_select="fft"
2607 mdct15_select="fft"
2608 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2609 mpeg_er_select="error_resilience"
2610 mpegaudio_select="mpegaudiodsp mpegaudioheader"
2611 mpegaudiodsp_select="dct"
2612 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2613 mpegvideoenc_select="aandcttables me_cmp mpegvideo pixblockdsp qpeldsp"
2614 vc1dsp_select="h264chroma qpeldsp startcode"
2615 rdft_select="fft"
2616
2617 # decoders / encoders
2618 aac_decoder_select="adts_header mdct15 mdct sinewin"
2619 aac_fixed_decoder_select="adts_header mdct sinewin"
2620 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2621 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2622 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2623 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2624 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2625 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2626 adpcm_g722_decoder_select="g722dsp"
2627 adpcm_g722_encoder_select="g722dsp"
2628 aic_decoder_select="golomb idctdsp"
2629 alac_encoder_select="lpc"
2630 als_decoder_select="bswapdsp"
2631 amrnb_decoder_select="lsp"
2632 amrwb_decoder_select="lsp"
2633 amv_decoder_select="sp5x_decoder exif"
2634 amv_encoder_select="jpegtables mpegvideoenc"
2635 ape_decoder_select="bswapdsp llauddsp"
2636 apng_decoder_deps="zlib"
2637 apng_encoder_deps="zlib"
2638 apng_encoder_select="llvidencdsp"
2639 aptx_decoder_select="audio_frame_queue"
2640 aptx_encoder_select="audio_frame_queue"
2641 aptx_hd_decoder_select="audio_frame_queue"
2642 aptx_hd_encoder_select="audio_frame_queue"
2643 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2644 asv1_encoder_select="aandcttables bswapdsp fdctdsp pixblockdsp"
2645 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2646 asv2_encoder_select="aandcttables bswapdsp fdctdsp pixblockdsp"
2647 atrac1_decoder_select="mdct sinewin"
2648 atrac3_decoder_select="mdct"
2649 atrac3p_decoder_select="mdct sinewin"
2650 atrac9_decoder_select="mdct"
2651 avrn_decoder_select="exif jpegtables"
2652 bink_decoder_select="blockdsp hpeldsp"
2653 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2654 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2655 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2656 clearvideo_decoder_select="idctdsp"
2657 cllc_decoder_select="bswapdsp"
2658 comfortnoise_encoder_select="lpc"
2659 cook_decoder_select="audiodsp mdct sinewin"
2660 cscd_decoder_select="lzo"
2661 cscd_decoder_suggest="zlib"
2662 dca_decoder_select="mdct"
2663 dds_decoder_select="texturedsp"
2664 dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
2665 dnxhd_decoder_select="blockdsp idctdsp"
2666 dnxhd_encoder_select="blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2667 dolby_e_decoder_select="mdct"
2668 dvvideo_decoder_select="dvprofile idctdsp"
2669 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2670 dxa_decoder_deps="zlib"
2671 dxv_decoder_select="lzf texturedsp"
2672 eac3_decoder_select="ac3_decoder"
2673 eac3_encoder_select="ac3_encoder"
2674 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2675 eatgq_decoder_select="aandcttables"
2676 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2677 exr_decoder_deps="zlib"
2678 ffv1_decoder_select="rangecoder"
2679 ffv1_encoder_select="rangecoder"
2680 ffvhuff_decoder_select="huffyuv_decoder"
2681 ffvhuff_encoder_select="huffyuv_encoder"
2682 fic_decoder_select="golomb"
2683 flac_decoder_select="flacdsp"
2684 flac_encoder_select="bswapdsp flacdsp lpc"
2685 flashsv2_decoder_deps="zlib"
2686 flashsv2_encoder_deps="zlib"
2687 flashsv_decoder_deps="zlib"
2688 flashsv_encoder_deps="zlib"
2689 flv_decoder_select="h263_decoder"
2690 flv_encoder_select="h263_encoder"
2691 fourxm_decoder_select="blockdsp bswapdsp"
2692 fraps_decoder_select="bswapdsp huffman"
2693 g2m_decoder_deps="zlib"
2694 g2m_decoder_select="blockdsp idctdsp jpegtables"
2695 g729_decoder_select="audiodsp"
2696 h261_decoder_select="mpegvideo"
2697 h261_encoder_select="mpegvideoenc"
2698 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2699 h263_encoder_select="h263dsp mpegvideoenc"
2700 h263i_decoder_select="h263_decoder"
2701 h263p_decoder_select="h263_decoder"
2702 h263p_encoder_select="h263_encoder"
2703 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
2704 h264_decoder_suggest="error_resilience"
2705 hap_decoder_select="snappy texturedsp"
2706 hap_encoder_deps="libsnappy"
2707 hap_encoder_select="texturedspenc"
2708 hevc_decoder_select="bswapdsp cabac golomb hevcparse videodsp"
2709 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2710 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llvidencdsp"
2711 hymt_decoder_select="huffyuv_decoder"
2712 iac_decoder_select="imc_decoder"
2713 imc_decoder_select="bswapdsp fft mdct sinewin"
2714 indeo3_decoder_select="hpeldsp"
2715 indeo4_decoder_select="ividsp"
2716 indeo5_decoder_select="ividsp"
2717 interplay_video_decoder_select="hpeldsp"
2718 jpegls_decoder_select="mjpeg_decoder"
2719 jv_decoder_select="blockdsp"
2720 lagarith_decoder_select="llviddsp"
2721 ljpeg_encoder_select="idctdsp jpegtables mpegvideoenc"
2722 lscr_decoder_deps="zlib"
2723 magicyuv_decoder_select="llviddsp"
2724 magicyuv_encoder_select="llvidencdsp"
2725 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2726 metasound_decoder_select="lsp mdct sinewin"
2727 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2728 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2729 mjpeg_encoder_select="jpegtables mpegvideoenc"
2730 mjpegb_decoder_select="mjpeg_decoder"
2731 mlp_decoder_select="mlp_parser"
2732 mlp_encoder_select="lpc audio_frame_queue"
2733 motionpixels_decoder_select="bswapdsp"
2734 mp1_decoder_select="mpegaudio"
2735 mp1float_decoder_select="mpegaudio"
2736 mp2_decoder_select="mpegaudio"
2737 mp2float_decoder_select="mpegaudio"
2738 mp3_decoder_select="mpegaudio"
2739 mp3adu_decoder_select="mpegaudio"
2740 mp3adufloat_decoder_select="mpegaudio"
2741 mp3float_decoder_select="mpegaudio"
2742 mp3on4_decoder_select="mpegaudio"
2743 mp3on4float_decoder_select="mpegaudio"
2744 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2745 mpc8_decoder_select="mpegaudiodsp"
2746 mpegvideo_decoder_select="mpegvideo"
2747 mpeg1video_decoder_select="mpegvideo"
2748 mpeg1video_encoder_select="mpegvideoenc h263dsp"
2749 mpeg2video_decoder_select="mpegvideo"
2750 mpeg2video_encoder_select="mpegvideoenc h263dsp"
2751 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2752 mpeg4_encoder_select="h263_encoder"
2753 msa1_decoder_select="mss34dsp"
2754 mscc_decoder_deps="zlib"
2755 msmpeg4v1_decoder_select="h263_decoder"
2756 msmpeg4v2_decoder_select="h263_decoder"
2757 msmpeg4v2_encoder_select="h263_encoder"
2758 msmpeg4v3_decoder_select="h263_decoder"
2759 msmpeg4v3_encoder_select="h263_encoder"
2760 mss2_decoder_select="mpegvideo qpeldsp vc1_decoder"
2761 mts2_decoder_select="mss34dsp"
2762 mwsc_decoder_deps="zlib"
2763 mxpeg_decoder_select="mjpeg_decoder"
2764 nellymoser_decoder_select="mdct sinewin"
2765 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2766 nuv_decoder_select="idctdsp lzo"
2767 on2avc_decoder_select="mdct"
2768 opus_decoder_deps="swresample"
2769 opus_decoder_select="mdct15"
2770 opus_encoder_select="audio_frame_queue mdct15"
2771 png_decoder_deps="zlib"
2772 png_encoder_deps="zlib"
2773 png_encoder_select="llvidencdsp"
2774 prores_decoder_select="blockdsp idctdsp"
2775 prores_encoder_select="fdctdsp"
2776 qcelp_decoder_select="lsp"
2777 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2778 ra_144_decoder_select="audiodsp"
2779 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2780 ralf_decoder_select="golomb"
2781 rasc_decoder_deps="zlib"
2782 rawvideo_decoder_select="bswapdsp"
2783 rscc_decoder_deps="zlib"
2784 rtjpeg_decoder_select="me_cmp"
2785 rv10_decoder_select="h263_decoder"
2786 rv10_encoder_select="h263_encoder"
2787 rv20_decoder_select="h263_decoder"
2788 rv20_encoder_select="h263_encoder"
2789 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2790 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2791 screenpresso_decoder_deps="zlib"
2792 shorten_decoder_select="bswapdsp"
2793 sipr_decoder_select="lsp"
2794 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2795 snow_encoder_select="dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2796 sonic_decoder_select="golomb rangecoder"
2797 sonic_encoder_select="golomb rangecoder"
2798 sonic_ls_encoder_select="golomb rangecoder"
2799 sp5x_decoder_select="mjpeg_decoder"
2800 speedhq_decoder_select="mpegvideo"
2801 srgc_decoder_deps="zlib"
2802 svq1_decoder_select="hpeldsp"
2803 svq1_encoder_select="hpeldsp me_cmp mpegvideoenc"
2804 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2805 svq3_decoder_suggest="zlib"
2806 tak_decoder_select="audiodsp"
2807 tdsc_decoder_deps="zlib"
2808 tdsc_decoder_select="mjpeg_decoder"
2809 theora_decoder_select="vp3_decoder"
2810 thp_decoder_select="mjpeg_decoder"
2811 tiff_decoder_suggest="zlib lzma"
2812 tiff_encoder_suggest="zlib"
2813 truehd_decoder_select="mlp_parser"
2814 truehd_encoder_select="lpc audio_frame_queue"
2815 truemotion2_decoder_select="bswapdsp"
2816 truespeech_decoder_select="bswapdsp"
2817 tscc_decoder_deps="zlib"
2818 twinvq_decoder_select="mdct lsp sinewin"
2819 txd_decoder_select="texturedsp"
2820 utvideo_decoder_select="bswapdsp llviddsp"
2821 utvideo_encoder_select="bswapdsp huffman llvidencdsp"
2822 vble_decoder_select="llviddsp"
2823 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 mpegvideo vc1dsp"
2824 vc1image_decoder_select="vc1_decoder"
2825 vorbis_decoder_select="mdct"
2826 vorbis_encoder_select="audio_frame_queue mdct"
2827 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2828 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2829 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2830 vp6a_decoder_select="vp6_decoder"
2831 vp6f_decoder_select="vp6_decoder"
2832 vp7_decoder_select="h264pred videodsp vp8dsp"
2833 vp8_decoder_select="h264pred videodsp vp8dsp"
2834 vp9_decoder_select="videodsp vp9_parser vp9_superframe_split_bsf"
2835 wcmv_decoder_deps="zlib"
2836 webp_decoder_select="vp8_decoder exif"
2837 wmalossless_decoder_select="llauddsp"
2838 wmapro_decoder_select="mdct sinewin wma_freqs"
2839 wmav1_decoder_select="mdct sinewin wma_freqs"
2840 wmav1_encoder_select="mdct sinewin wma_freqs"
2841 wmav2_decoder_select="mdct sinewin wma_freqs"
2842 wmav2_encoder_select="mdct sinewin wma_freqs"
2843 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2844 wmv1_decoder_select="h263_decoder"
2845 wmv1_encoder_select="h263_encoder"
2846 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2847 wmv2_encoder_select="h263_encoder wmv2dsp"
2848 wmv3_decoder_select="vc1_decoder"
2849 wmv3image_decoder_select="wmv3_decoder"
2850 xma1_decoder_select="wmapro_decoder"
2851 xma2_decoder_select="wmapro_decoder"
2852 zerocodec_decoder_deps="zlib"
2853 zlib_decoder_deps="zlib"
2854 zlib_encoder_deps="zlib"
2855 zmbv_decoder_deps="zlib"
2856 zmbv_encoder_deps="zlib"
2857
2858 # hardware accelerators
2859 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2860 cuda_deps="ffnvcodec"
2861 cuvid_deps="ffnvcodec"
2862 d3d11va_deps="dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2863 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode ole32 user32"
2864 ffnvcodec_deps_any="libdl LoadLibrary"
2865 nvdec_deps="ffnvcodec"
2866 vaapi_x11_deps="xlib"
2867 videotoolbox_hwaccel_deps="videotoolbox pthreads"
2868 videotoolbox_hwaccel_extralibs="-framework QuartzCore"
2869 xvmc_deps="X11_extensions_XvMClib_h"
2870
2871 h263_vaapi_hwaccel_deps="vaapi"
2872 h263_vaapi_hwaccel_select="h263_decoder"
2873 h263_videotoolbox_hwaccel_deps="videotoolbox"
2874 h263_videotoolbox_hwaccel_select="h263_decoder"
2875 h264_d3d11va_hwaccel_deps="d3d11va"
2876 h264_d3d11va_hwaccel_select="h264_decoder"
2877 h264_d3d11va2_hwaccel_deps="d3d11va"
2878 h264_d3d11va2_hwaccel_select="h264_decoder"
2879 h264_dxva2_hwaccel_deps="dxva2"
2880 h264_dxva2_hwaccel_select="h264_decoder"
2881 h264_nvdec_hwaccel_deps="nvdec"
2882 h264_nvdec_hwaccel_select="h264_decoder"
2883 h264_vaapi_hwaccel_deps="vaapi"
2884 h264_vaapi_hwaccel_select="h264_decoder"
2885 h264_vdpau_hwaccel_deps="vdpau"
2886 h264_vdpau_hwaccel_select="h264_decoder"
2887 h264_videotoolbox_hwaccel_deps="videotoolbox"
2888 h264_videotoolbox_hwaccel_select="h264_decoder"
2889 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2890 hevc_d3d11va_hwaccel_select="hevc_decoder"
2891 hevc_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2892 hevc_d3d11va2_hwaccel_select="hevc_decoder"
2893 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2894 hevc_dxva2_hwaccel_select="hevc_decoder"
2895 hevc_nvdec_hwaccel_deps="nvdec"
2896 hevc_nvdec_hwaccel_select="hevc_decoder"
2897 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2898 hevc_vaapi_hwaccel_select="hevc_decoder"
2899 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2900 hevc_vdpau_hwaccel_select="hevc_decoder"
2901 hevc_videotoolbox_hwaccel_deps="videotoolbox"
2902 hevc_videotoolbox_hwaccel_select="hevc_decoder"
2903 mjpeg_nvdec_hwaccel_deps="nvdec"
2904 mjpeg_nvdec_hwaccel_select="mjpeg_decoder"
2905 mjpeg_vaapi_hwaccel_deps="vaapi"
2906 mjpeg_vaapi_hwaccel_select="mjpeg_decoder"
2907 mpeg_xvmc_hwaccel_deps="xvmc"
2908 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2909 mpeg1_nvdec_hwaccel_deps="nvdec"
2910 mpeg1_nvdec_hwaccel_select="mpeg1video_decoder"
2911 mpeg1_vdpau_hwaccel_deps="vdpau"
2912 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2913 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2914 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2915 mpeg1_xvmc_hwaccel_deps="xvmc"
2916 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2917 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2918 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2919 mpeg2_d3d11va2_hwaccel_deps="d3d11va"
2920 mpeg2_d3d11va2_hwaccel_select="mpeg2video_decoder"
2921 mpeg2_dxva2_hwaccel_deps="dxva2"
2922 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2923 mpeg2_nvdec_hwaccel_deps="nvdec"
2924 mpeg2_nvdec_hwaccel_select="mpeg2video_decoder"
2925 mpeg2_vaapi_hwaccel_deps="vaapi"
2926 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2927 mpeg2_vdpau_hwaccel_deps="vdpau"
2928 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2929 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2930 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2931 mpeg2_xvmc_hwaccel_deps="xvmc"
2932 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2933 mpeg4_nvdec_hwaccel_deps="nvdec"
2934 mpeg4_nvdec_hwaccel_select="mpeg4_decoder"
2935 mpeg4_vaapi_hwaccel_deps="vaapi"
2936 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2937 mpeg4_vdpau_hwaccel_deps="vdpau"
2938 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2939 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2940 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2941 vc1_d3d11va_hwaccel_deps="d3d11va"
2942 vc1_d3d11va_hwaccel_select="vc1_decoder"
2943 vc1_d3d11va2_hwaccel_deps="d3d11va"
2944 vc1_d3d11va2_hwaccel_select="vc1_decoder"
2945 vc1_dxva2_hwaccel_deps="dxva2"
2946 vc1_dxva2_hwaccel_select="vc1_decoder"
2947 vc1_nvdec_hwaccel_deps="nvdec"
2948 vc1_nvdec_hwaccel_select="vc1_decoder"
2949 vc1_vaapi_hwaccel_deps="vaapi"
2950 vc1_vaapi_hwaccel_select="vc1_decoder"
2951 vc1_vdpau_hwaccel_deps="vdpau"
2952 vc1_vdpau_hwaccel_select="vc1_decoder"
2953 vp8_nvdec_hwaccel_deps="nvdec"
2954 vp8_nvdec_hwaccel_select="vp8_decoder"
2955 vp8_vaapi_hwaccel_deps="vaapi"
2956 vp8_vaapi_hwaccel_select="vp8_decoder"
2957 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2958 vp9_d3d11va_hwaccel_select="vp9_decoder"
2959 vp9_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2960 vp9_d3d11va2_hwaccel_select="vp9_decoder"
2961 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
2962 vp9_dxva2_hwaccel_select="vp9_decoder"
2963 vp9_nvdec_hwaccel_deps="nvdec"
2964 vp9_nvdec_hwaccel_select="vp9_decoder"
2965 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9_bit_depth"
2966 vp9_vaapi_hwaccel_select="vp9_decoder"
2967 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2968 wmv3_d3d11va2_hwaccel_select="vc1_d3d11va2_hwaccel"
2969 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2970 wmv3_nvdec_hwaccel_select="vc1_nvdec_hwaccel"
2971 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2972 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2973
2974 # hardware-accelerated codecs
2975 omx_deps="libdl pthreads"
2976 omx_rpi_select="omx"
2977 qsv_deps="libmfx"
2978 qsvdec_select="qsv"
2979 qsvenc_select="qsv"
2980 qsvvpp_select="qsv"
2981 vaapi_encode_deps="vaapi"
2982 v4l2_m2m_deps="linux_videodev2_h sem_timedwait"
2983
2984 hwupload_cuda_filter_deps="ffnvcodec"
2985 scale_npp_filter_deps="ffnvcodec libnpp"
2986 scale_cuda_filter_deps="ffnvcodec cuda_nvcc"
2987 thumbnail_cuda_filter_deps="ffnvcodec cuda_nvcc"
2988 transpose_npp_filter_deps="ffnvcodec libnpp"
2989
2990 amf_deps_any="libdl LoadLibrary"
2991 nvenc_deps="ffnvcodec"
2992 nvenc_deps_any="libdl LoadLibrary"
2993 nvenc_encoder_deps="nvenc"
2994
2995 h263_v4l2m2m_decoder_deps="v4l2_m2m h263_v4l2_m2m"
2996 h263_v4l2m2m_encoder_deps="v4l2_m2m h263_v4l2_m2m"
2997 h264_amf_encoder_deps="amf"
2998 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2999 h264_cuvid_decoder_deps="cuvid"
3000 h264_cuvid_decoder_select="h264_mp4toannexb_bsf"
3001 h264_mediacodec_decoder_deps="mediacodec"
3002 h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
3003 h264_mmal_decoder_deps="mmal"
3004 h264_nvenc_encoder_deps="nvenc"
3005 h264_omx_encoder_deps="omx"
3006 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec"
3007 h264_qsv_encoder_select="qsvenc"
3008 h264_rkmpp_decoder_deps="rkmpp"
3009 h264_rkmpp_decoder_select="h264_mp4toannexb_bsf"
3010 h264_vaapi_encoder_select="cbs_h264 vaapi_encode"
3011 h264_v4l2m2m_decoder_deps="v4l2_m2m h264_v4l2_m2m"
3012 h264_v4l2m2m_decoder_select="h264_mp4toannexb_bsf"
3013 h264_v4l2m2m_encoder_deps="v4l2_m2m h264_v4l2_m2m"
3014 hevc_amf_encoder_deps="amf"
3015 hevc_cuvid_decoder_deps="cuvid"
3016 hevc_cuvid_decoder_select="hevc_mp4toannexb_bsf"
3017 hevc_mediacodec_decoder_deps="mediacodec"
3018 hevc_mediacodec_decoder_select="hevc_mp4toannexb_bsf hevc_parser"
3019 hevc_nvenc_encoder_deps="nvenc"
3020 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec"
3021 hevc_qsv_encoder_select="hevcparse qsvenc"
3022 hevc_rkmpp_decoder_deps="rkmpp"
3023 hevc_rkmpp_decoder_select="hevc_mp4toannexb_bsf"
3024 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
3025 hevc_vaapi_encoder_select="cbs_h265 vaapi_encode"
3026 hevc_v4l2m2m_decoder_deps="v4l2_m2m hevc_v4l2_m2m"
3027 hevc_v4l2m2m_decoder_select="hevc_mp4toannexb_bsf"
3028 hevc_v4l2m2m_encoder_deps="v4l2_m2m hevc_v4l2_m2m"
3029 mjpeg_cuvid_decoder_deps="cuvid"
3030 mjpeg_qsv_encoder_deps="libmfx"
3031 mjpeg_qsv_encoder_select="qsvenc"
3032 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
3033 mjpeg_vaapi_encoder_select="cbs_jpeg jpegtables vaapi_encode"
3034 mpeg1_cuvid_decoder_deps="cuvid"
3035 mpeg1_v4l2m2m_decoder_deps="v4l2_m2m mpeg1_v4l2_m2m"
3036 mpeg2_crystalhd_decoder_select="crystalhd"
3037 mpeg2_cuvid_decoder_deps="cuvid"
3038 mpeg2_mmal_decoder_deps="mmal"
3039 mpeg2_mediacodec_decoder_deps="mediacodec"
3040 mpeg2_qsv_decoder_select="qsvdec mpegvideo_parser"
3041 mpeg2_qsv_encoder_select="qsvenc"
3042 mpeg2_vaapi_encoder_select="cbs_mpeg2 vaapi_encode"
3043 mpeg2_v4l2m2m_decoder_deps="v4l2_m2m mpeg2_v4l2_m2m"
3044 mpeg4_crystalhd_decoder_select="crystalhd"
3045 mpeg4_cuvid_decoder_deps="cuvid"
3046 mpeg4_mediacodec_decoder_deps="mediacodec"
3047 mpeg4_mmal_decoder_deps="mmal"
3048 mpeg4_omx_encoder_deps="omx"
3049 mpeg4_v4l2m2m_decoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
3050 mpeg4_v4l2m2m_encoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
3051 msmpeg4_crystalhd_decoder_select="crystalhd"
3052 nvenc_h264_encoder_select="h264_nvenc_encoder"
3053 nvenc_hevc_encoder_select="hevc_nvenc_encoder"
3054 vc1_crystalhd_decoder_select="crystalhd"
3055 vc1_cuvid_decoder_deps="cuvid"
3056 vc1_mmal_decoder_deps="mmal"
3057 vc1_qsv_decoder_select="qsvdec vc1_parser"
3058 vc1_v4l2m2m_decoder_deps="v4l2_m2m vc1_v4l2_m2m"
3059 vp8_cuvid_decoder_deps="cuvid"
3060 vp8_mediacodec_decoder_deps="mediacodec"
3061 vp8_qsv_decoder_select="qsvdec vp8_parser"
3062 vp8_rkmpp_decoder_deps="rkmpp"
3063 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
3064 vp8_vaapi_encoder_select="vaapi_encode"
3065 vp8_v4l2m2m_decoder_deps="v4l2_m2m vp8_v4l2_m2m"
3066 vp8_v4l2m2m_encoder_deps="v4l2_m2m vp8_v4l2_m2m"
3067 vp9_cuvid_decoder_deps="cuvid"
3068 vp9_mediacodec_decoder_deps="mediacodec"
3069 vp9_rkmpp_decoder_deps="rkmpp"
3070 vp9_vaapi_encoder_deps="VAEncPictureParameterBufferVP9"
3071 vp9_vaapi_encoder_select="vaapi_encode"
3072 vp9_v4l2m2m_decoder_deps="v4l2_m2m vp9_v4l2_m2m"
3073 wmv3_crystalhd_decoder_select="crystalhd"
3074
3075 # parsers
3076 aac_parser_select="adts_header"
3077 av1_parser_select="cbs_av1"
3078 h264_parser_select="golomb h264dsp h264parse"
3079 hevc_parser_select="hevcparse"
3080 mpegaudio_parser_select="mpegaudioheader"
3081 mpegvideo_parser_select="mpegvideo"
3082 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
3083 vc1_parser_select="vc1dsp"
3084
3085 # bitstream_filters
3086 aac_adtstoasc_bsf_select="adts_header"
3087 av1_frame_split_bsf_select="cbs_av1"
3088 av1_metadata_bsf_select="cbs_av1"
3089 eac3_core_bsf_select="ac3_parser"
3090 filter_units_bsf_select="cbs"
3091 h264_metadata_bsf_deps="const_nan"
3092 h264_metadata_bsf_select="cbs_h264"
3093 h264_redundant_pps_bsf_select="cbs_h264"
3094 hevc_metadata_bsf_select="cbs_h265"
3095 mjpeg2jpeg_bsf_select="jpegtables"
3096 mpeg2_metadata_bsf_select="cbs_mpeg2"
3097 trace_headers_bsf_select="cbs"
3098 vp9_metadata_bsf_select="cbs_vp9"
3099
3100 # external libraries
3101 aac_at_decoder_deps="audiotoolbox"
3102 aac_at_decoder_select="aac_adtstoasc_bsf"
3103 ac3_at_decoder_deps="audiotoolbox"
3104 ac3_at_decoder_select="ac3_parser"
3105 adpcm_ima_qt_at_decoder_deps="audiotoolbox"
3106 alac_at_decoder_deps="audiotoolbox"
3107 amr_nb_at_decoder_deps="audiotoolbox"
3108 avisynth_deps_any="libdl LoadLibrary"
3109 avisynth_demuxer_deps="avisynth"
3110 avisynth_demuxer_select="riffdec"
3111 eac3_at_decoder_deps="audiotoolbox"
3112 eac3_at_decoder_select="ac3_parser"
3113 gsm_ms_at_decoder_deps="audiotoolbox"
3114 ilbc_at_decoder_deps="audiotoolbox"
3115 mp1_at_decoder_deps="audiotoolbox"
3116 mp2_at_decoder_deps="audiotoolbox"
3117 mp3_at_decoder_deps="audiotoolbox"
3118 mp1_at_decoder_select="mpegaudioheader"
3119 mp2_at_decoder_select="mpegaudioheader"
3120 mp3_at_decoder_select="mpegaudioheader"
3121 pcm_alaw_at_decoder_deps="audiotoolbox"
3122 pcm_mulaw_at_decoder_deps="audiotoolbox"
3123 qdmc_at_decoder_deps="audiotoolbox"
3124 qdm2_at_decoder_deps="audiotoolbox"
3125 aac_at_encoder_deps="audiotoolbox"
3126 aac_at_encoder_select="audio_frame_queue"
3127 alac_at_encoder_deps="audiotoolbox"
3128 alac_at_encoder_select="audio_frame_queue"
3129 ilbc_at_encoder_deps="audiotoolbox"
3130 ilbc_at_encoder_select="audio_frame_queue"
3131 pcm_alaw_at_encoder_deps="audiotoolbox"
3132 pcm_alaw_at_encoder_select="audio_frame_queue"
3133 pcm_mulaw_at_encoder_deps="audiotoolbox"
3134 pcm_mulaw_at_encoder_select="audio_frame_queue"
3135 chromaprint_muxer_deps="chromaprint"
3136 h264_videotoolbox_encoder_deps="pthreads"
3137 h264_videotoolbox_encoder_select="videotoolbox_encoder"
3138 hevc_videotoolbox_encoder_deps="pthreads"
3139 hevc_videotoolbox_encoder_select="videotoolbox_encoder"
3140 libaom_av1_decoder_deps="libaom"
3141 libaom_av1_encoder_deps="libaom"
3142 libaom_av1_encoder_select="extract_extradata_bsf"
3143 libaribb24_decoder_deps="libaribb24"
3144 libcelt_decoder_deps="libcelt"
3145 libcodec2_decoder_deps="libcodec2"
3146 libcodec2_encoder_deps="libcodec2"
3147 libdav1d_decoder_deps="libdav1d"
3148 libdavs2_decoder_deps="libdavs2"
3149 libfdk_aac_decoder_deps="libfdk_aac"
3150 libfdk_aac_encoder_deps="libfdk_aac"
3151 libfdk_aac_encoder_select="audio_frame_queue"
3152 libgme_demuxer_deps="libgme"
3153 libgsm_decoder_deps="libgsm"
3154 libgsm_encoder_deps="libgsm"
3155 libgsm_ms_decoder_deps="libgsm"
3156 libgsm_ms_encoder_deps="libgsm"
3157 libilbc_decoder_deps="libilbc"
3158 libilbc_encoder_deps="libilbc"
3159 libkvazaar_encoder_deps="libkvazaar"
3160 libmodplug_demuxer_deps="libmodplug"
3161 libmp3lame_encoder_deps="libmp3lame"
3162 libmp3lame_encoder_select="audio_frame_queue mpegaudioheader"
3163 libopencore_amrnb_decoder_deps="libopencore_amrnb"
3164 libopencore_amrnb_encoder_deps="libopencore_amrnb"
3165 libopencore_amrnb_encoder_select="audio_frame_queue"
3166 libopencore_amrwb_decoder_deps="libopencore_amrwb"
3167 libopenh264_decoder_deps="libopenh264"
3168 libopenh264_decoder_select="h264_mp4toannexb_bsf"
3169 libopenh264_encoder_deps="libopenh264"
3170 libopenjpeg_decoder_deps="libopenjpeg"
3171 libopenjpeg_encoder_deps="libopenjpeg"
3172 libopenmpt_demuxer_deps="libopenmpt"
3173 libopus_decoder_deps="libopus"
3174 libopus_encoder_deps="libopus"
3175 libopus_encoder_select="audio_frame_queue"
3176 librsvg_decoder_deps="librsvg"
3177 libshine_encoder_deps="libshine"
3178 libshine_encoder_select="audio_frame_queue"
3179 libspeex_decoder_deps="libspeex"
3180 libspeex_encoder_deps="libspeex"
3181 libspeex_encoder_select="audio_frame_queue"
3182 libtheora_encoder_deps="libtheora"
3183 libtwolame_encoder_deps="libtwolame"
3184 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
3185 libvorbis_decoder_deps="libvorbis"
3186 libvorbis_encoder_deps="libvorbis libvorbisenc"
3187 libvorbis_encoder_select="audio_frame_queue"
3188 libvpx_vp8_decoder_deps="libvpx"
3189 libvpx_vp8_encoder_deps="libvpx"
3190 libvpx_vp9_decoder_deps="libvpx"
3191 libvpx_vp9_encoder_deps="libvpx"
3192 libwavpack_encoder_deps="libwavpack"
3193 libwavpack_encoder_select="audio_frame_queue"
3194 libwebp_encoder_deps="libwebp"
3195 libwebp_anim_encoder_deps="libwebp"
3196 libx262_encoder_deps="libx262"
3197 libx264_encoder_deps="libx264"
3198 libx264rgb_encoder_deps="libx264 x264_csp_bgr"
3199 libx264rgb_encoder_select="libx264_encoder"
3200 libx265_encoder_deps="libx265"
3201 libxavs_encoder_deps="libxavs"
3202 libxavs2_encoder_deps="libxavs2"
3203 libxvid_encoder_deps="libxvid"
3204 libzvbi_teletext_decoder_deps="libzvbi"
3205 vapoursynth_demuxer_deps="vapoursynth"
3206 videotoolbox_suggest="coreservices"
3207 videotoolbox_deps="corefoundation coremedia corevideo"
3208 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
3209
3210 # demuxers / muxers
3211 ac3_demuxer_select="ac3_parser"
3212 aiff_muxer_select="iso_media"
3213 asf_demuxer_select="riffdec"
3214 asf_o_demuxer_select="riffdec"
3215 asf_muxer_select="riffenc"
3216 asf_stream_muxer_select="asf_muxer"
3217 avi_demuxer_select="iso_media riffdec exif"
3218 avi_muxer_select="riffenc"
3219 caf_demuxer_select="iso_media riffdec"
3220 caf_muxer_select="iso_media"
3221 dash_muxer_select="mp4_muxer"
3222 dash_demuxer_deps="libxml2"
3223 dirac_demuxer_select="dirac_parser"
3224 dts_demuxer_select="dca_parser"
3225 dtshd_demuxer_select="dca_parser"
3226 dv_demuxer_select="dvprofile"
3227 dv_muxer_select="dvprofile"
3228 dxa_demuxer_select="riffdec"
3229 eac3_demuxer_select="ac3_parser"
3230 f4v_muxer_select="mov_muxer"
3231 fifo_muxer_deps="threads"
3232 flac_demuxer_select="flac_parser"
3233 hds_muxer_select="flv_muxer"
3234 hls_muxer_select="mpegts_muxer"
3235 hls_muxer_suggest="gcrypt openssl"
3236 image2_alias_pix_demuxer_select="image2_demuxer"
3237 image2_brender_pix_demuxer_select="image2_demuxer"
3238 ipod_muxer_select="mov_muxer"
3239 ismv_muxer_select="mov_muxer"
3240 ivf_muxer_select="av1_metadata_bsf vp9_superframe_bsf"
3241 matroska_audio_muxer_select="matroska_muxer"
3242 matroska_demuxer_select="iso_media riffdec"
3243 matroska_demuxer_suggest="bzlib lzo zlib"
3244 matroska_muxer_select="iso_media riffenc"
3245 mmf_muxer_select="riffenc"
3246 mov_demuxer_select="iso_media riffdec"
3247 mov_demuxer_suggest="zlib"
3248 mov_muxer_select="iso_media riffenc rtpenc_chain"
3249 mp3_demuxer_select="mpegaudio_parser"
3250 mp3_muxer_select="mpegaudioheader"
3251 mp4_muxer_select="mov_muxer"
3252 mpegts_demuxer_select="iso_media"
3253 mpegts_muxer_select="adts_muxer latm_muxer"
3254 mpegtsraw_demuxer_select="mpegts_demuxer"
3255 mxf_d10_muxer_select="mxf_muxer"
3256 mxf_opatom_muxer_select="mxf_muxer"
3257 nut_muxer_select="riffenc"
3258 nuv_demuxer_select="riffdec"
3259 oga_muxer_select="ogg_muxer"
3260 ogg_demuxer_select="dirac_parse"
3261 ogv_muxer_select="ogg_muxer"
3262 opus_muxer_select="ogg_muxer"
3263 psp_muxer_select="mov_muxer"
3264 rtp_demuxer_select="sdp_demuxer"
3265 rtp_muxer_select="golomb"
3266 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
3267 rtsp_demuxer_select="http_protocol rtpdec"
3268 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
3269 sap_demuxer_select="sdp_demuxer"
3270 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
3271 sdp_demuxer_select="rtpdec"
3272 smoothstreaming_muxer_select="ismv_muxer"
3273 spdif_demuxer_select="adts_header"
3274 spdif_muxer_select="adts_header"
3275 spx_muxer_select="ogg_muxer"
3276 swf_demuxer_suggest="zlib"
3277 tak_demuxer_select="tak_parser"
3278 tg2_muxer_select="mov_muxer"
3279 tgp_muxer_select="mov_muxer"
3280 vobsub_demuxer_select="mpegps_demuxer"
3281 w64_demuxer_select="wav_demuxer"
3282 w64_muxer_select="wav_muxer"
3283 wav_demuxer_select="riffdec"
3284 wav_muxer_select="riffenc"
3285 webm_muxer_select="iso_media riffenc"
3286 webm_dash_manifest_demuxer_select="matroska_demuxer"
3287 wtv_demuxer_select="mpegts_demuxer riffdec"
3288 wtv_muxer_select="mpegts_muxer riffenc"
3289 xmv_demuxer_select="riffdec"
3290 xwma_demuxer_select="riffdec"
3291
3292 # indevs / outdevs
3293 android_camera_indev_deps="android camera2ndk mediandk pthreads"
3294 android_camera_indev_extralibs="-landroid -lcamera2ndk -lmediandk"
3295 alsa_indev_deps="alsa"
3296 alsa_outdev_deps="alsa"
3297 avfoundation_indev_deps="avfoundation corevideo coremedia pthreads"
3298 avfoundation_indev_suggest="coregraphics applicationservices"
3299 avfoundation_indev_extralibs="-framework Foundation"
3300 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
3301 caca_outdev_deps="libcaca"
3302 decklink_deps_any="libdl LoadLibrary"
3303 decklink_indev_deps="decklink threads"
3304 decklink_indev_extralibs="-lstdc++"
3305 decklink_outdev_deps="decklink threads"
3306 decklink_outdev_suggest="libklvanc"
3307 decklink_outdev_extralibs="-lstdc++"
3308 dshow_indev_deps="IBaseFilter"
3309 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
3310 fbdev_indev_deps="linux_fb_h"
3311 fbdev_outdev_deps="linux_fb_h"
3312 gdigrab_indev_deps="CreateDIBSection"
3313 gdigrab_indev_extralibs="-lgdi32"
3314 gdigrab_indev_select="bmp_decoder"
3315 iec61883_indev_deps="libiec61883"
3316 jack_indev_deps="libjack"
3317 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
3318 kmsgrab_indev_deps="libdrm"
3319 lavfi_indev_deps="avfilter"
3320 libcdio_indev_deps="libcdio"
3321 libdc1394_indev_deps="libdc1394"
3322 openal_indev_deps="openal"
3323 opengl_outdev_deps="opengl"
3324 opengl_outdev_suggest="sdl2"
3325 oss_indev_deps_any="sys_soundcard_h"
3326 oss_outdev_deps_any="sys_soundcard_h"
3327 pulse_indev_deps="libpulse"
3328 pulse_outdev_deps="libpulse"
3329 sdl2_outdev_deps="sdl2"
3330 sndio_indev_deps="sndio"
3331 sndio_outdev_deps="sndio"
3332 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
3333 v4l2_indev_suggest="libv4l2"
3334 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
3335 v4l2_outdev_suggest="libv4l2"
3336 vfwcap_indev_deps="vfw32 vfwcap_defines"
3337 xcbgrab_indev_deps="libxcb"
3338 xcbgrab_indev_suggest="libxcb_shm libxcb_shape libxcb_xfixes"
3339 xv_outdev_deps="xlib"
3340
3341 # protocols
3342 async_protocol_deps="threads"
3343 bluray_protocol_deps="libbluray"
3344 ffrtmpcrypt_protocol_conflict="librtmp_protocol"
3345 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl mbedtls"
3346 ffrtmpcrypt_protocol_select="tcp_protocol"
3347 ffrtmphttp_protocol_conflict="librtmp_protocol"
3348 ffrtmphttp_protocol_select="http_protocol"
3349 ftp_protocol_select="tcp_protocol"
3350 gopher_protocol_select="network"
3351 http_protocol_select="tcp_protocol"
3352 http_protocol_suggest="zlib"
3353 httpproxy_protocol_select="tcp_protocol"
3354 httpproxy_protocol_suggest="zlib"
3355 https_protocol_select="tls_protocol"
3356 https_protocol_suggest="zlib"
3357 icecast_protocol_select="http_protocol"
3358 mmsh_protocol_select="http_protocol"
3359 mmst_protocol_select="network"
3360 rtmp_protocol_conflict="librtmp_protocol"
3361 rtmp_protocol_select="tcp_protocol"
3362 rtmp_protocol_suggest="zlib"
3363 rtmpe_protocol_select="ffrtmpcrypt_protocol"
3364 rtmpe_protocol_suggest="zlib"
3365 rtmps_protocol_conflict="librtmp_protocol"
3366 rtmps_protocol_select="tls_protocol"
3367 rtmps_protocol_suggest="zlib"
3368 rtmpt_protocol_select="ffrtmphttp_protocol"
3369 rtmpt_protocol_suggest="zlib"
3370 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
3371 rtmpte_protocol_suggest="zlib"
3372 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
3373 rtmpts_protocol_suggest="zlib"
3374 rtp_protocol_select="udp_protocol"
3375 schannel_conflict="openssl gnutls libtls mbedtls"
3376 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
3377 sctp_protocol_select="network"
3378 securetransport_conflict="openssl gnutls libtls mbedtls"
3379 srtp_protocol_select="rtp_protocol srtp"
3380 tcp_protocol_select="network"
3381 tls_protocol_deps_any="gnutls openssl schannel securetransport libtls mbedtls"
3382 tls_protocol_select="tcp_protocol"
3383 udp_protocol_select="network"
3384 udplite_protocol_select="network"
3385 unix_protocol_deps="sys_un_h"
3386 unix_protocol_select="network"
3387
3388 # external library protocols
3389 librtmp_protocol_deps="librtmp"
3390 librtmpe_protocol_deps="librtmp"
3391 librtmps_protocol_deps="librtmp"
3392 librtmpt_protocol_deps="librtmp"
3393 librtmpte_protocol_deps="librtmp"
3394 libsmbclient_protocol_deps="libsmbclient gplv3"
3395 libsrt_protocol_deps="libsrt"
3396 libsrt_protocol_select="network"
3397 libssh_protocol_deps="libssh"
3398 libtls_conflict="openssl gnutls mbedtls"
3399
3400 # filters
3401 afftdn_filter_deps="avcodec"
3402 afftdn_filter_select="fft"
3403 afftfilt_filter_deps="avcodec"
3404 afftfilt_filter_select="fft"
3405 afir_filter_deps="avcodec"
3406 afir_filter_select="fft"
3407 amovie_filter_deps="avcodec avformat"
3408 aresample_filter_deps="swresample"
3409 asr_filter_deps="pocketsphinx"
3410 ass_filter_deps="libass"
3411 atempo_filter_deps="avcodec"
3412 atempo_filter_select="rdft"
3413 avgblur_opencl_filter_deps="opencl"
3414 azmq_filter_deps="libzmq"
3415 blackframe_filter_deps="gpl"
3416 bm3d_filter_deps="avcodec"
3417 bm3d_filter_select="dct"
3418 boxblur_filter_deps="gpl"
3419 boxblur_opencl_filter_deps="opencl gpl"
3420 bs2b_filter_deps="libbs2b"
3421 colorkey_opencl_filter_deps="opencl"
3422 colormatrix_filter_deps="gpl"
3423 convolution_opencl_filter_deps="opencl"
3424 convolve_filter_deps="avcodec"
3425 convolve_filter_select="fft"
3426 coreimage_filter_deps="coreimage appkit"
3427 coreimage_filter_extralibs="-framework OpenGL"
3428 coreimagesrc_filter_deps="coreimage appkit"
3429 coreimagesrc_filter_extralibs="-framework OpenGL"
3430 cover_rect_filter_deps="avcodec avformat gpl"
3431 cropdetect_filter_deps="gpl"
3432 deconvolve_filter_deps="avcodec"
3433 deconvolve_filter_select="fft"
3434 deinterlace_qsv_filter_deps="libmfx"
3435 deinterlace_vaapi_filter_deps="vaapi"
3436 delogo_filter_deps="gpl"
3437 denoise_vaapi_filter_deps="vaapi"
3438 deshake_filter_select="pixelutils"
3439 dilation_opencl_filter_deps="opencl"
3440 drawtext_filter_deps="libfreetype"
3441 drawtext_filter_suggest="libfontconfig libfribidi"
3442 elbg_filter_deps="avcodec"
3443 eq_filter_deps="gpl"
3444 erosion_opencl_filter_deps="opencl"
3445 fftfilt_filter_deps="avcodec"
3446 fftfilt_filter_select="rdft"
3447 fftdnoiz_filter_deps="avcodec"
3448 fftdnoiz_filter_select="fft"
3449 find_rect_filter_deps="avcodec avformat gpl"
3450 firequalizer_filter_deps="avcodec"
3451 firequalizer_filter_select="rdft"
3452 flite_filter_deps="libflite"
3453 framerate_filter_select="scene_sad"
3454 freezedetect_filter_select="scene_sad"
3455 frei0r_filter_deps="frei0r libdl"
3456 frei0r_src_filter_deps="frei0r libdl"
3457 fspp_filter_deps="gpl"
3458 geq_filter_deps="gpl"
3459 histeq_filter_deps="gpl"
3460 hqdn3d_filter_deps="gpl"
3461 interlace_filter_deps="gpl"
3462 kerndeint_filter_deps="gpl"
3463 ladspa_filter_deps="ladspa libdl"
3464 lensfun_filter_deps="liblensfun version3"
3465 lv2_filter_deps="lv2"
3466 mcdeint_filter_deps="avcodec gpl"
3467 movie_filter_deps="avcodec avformat"
3468 mpdecimate_filter_deps="gpl"
3469 mpdecimate_filter_select="pixelutils"
3470 minterpolate_filter_select="scene_sad"
3471 mptestsrc_filter_deps="gpl"
3472 negate_filter_deps="lut_filter"
3473 nlmeans_opencl_filter_deps="opencl"
3474 nnedi_filter_deps="gpl"
3475 ocr_filter_deps="libtesseract"
3476 ocv_filter_deps="libopencv"
3477 openclsrc_filter_deps="opencl"
3478 overlay_opencl_filter_deps="opencl"
3479 overlay_qsv_filter_deps="libmfx"
3480 overlay_qsv_filter_select="qsvvpp"
3481 owdenoise_filter_deps="gpl"
3482 pan_filter_deps="swresample"
3483 perspective_filter_deps="gpl"
3484 phase_filter_deps="gpl"
3485 pp7_filter_deps="gpl"
3486 pp_filter_deps="gpl postproc"
3487 prewitt_opencl_filter_deps="opencl"
3488 procamp_vaapi_filter_deps="vaapi"
3489 program_opencl_filter_deps="opencl"
3490 pullup_filter_deps="gpl"
3491 removelogo_filter_deps="avcodec avformat swscale"
3492 repeatfields_filter_deps="gpl"
3493 resample_filter_deps="avresample"
3494 roberts_opencl_filter_deps="opencl"
3495 rubberband_filter_deps="librubberband"
3496 sab_filter_deps="gpl swscale"
3497 scale2ref_filter_deps="swscale"
3498 scale_filter_deps="swscale"
3499 scale_qsv_filter_deps="libmfx"
3500 select_filter_select="scene_sad"
3501 sharpness_vaapi_filter_deps="vaapi"
3502 showcqt_filter_deps="avcodec avformat swscale"
3503 showcqt_filter_suggest="libfontconfig libfreetype"
3504 showcqt_filter_select="fft"
3505 showfreqs_filter_deps="avcodec"
3506 showfreqs_filter_select="fft"
3507 showspectrum_filter_deps="avcodec"
3508 showspectrum_filter_select="fft"
3509 showspectrumpic_filter_deps="avcodec"
3510 showspectrumpic_filter_select="fft"
3511 signature_filter_deps="gpl avcodec avformat"
3512 smartblur_filter_deps="gpl swscale"
3513 sobel_opencl_filter_deps="opencl"
3514 sofalizer_filter_deps="libmysofa avcodec"
3515 sofalizer_filter_select="fft"
3516 spectrumsynth_filter_deps="avcodec"
3517 spectrumsynth_filter_select="fft"
3518 spp_filter_deps="gpl avcodec"
3519 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3520 sr_filter_deps="avformat swscale"
3521 sr_filter_select="dnn"
3522 stereo3d_filter_deps="gpl"
3523 subtitles_filter_deps="avformat avcodec libass"
3524 super2xsai_filter_deps="gpl"
3525 pixfmts_super2xsai_test_deps="super2xsai_filter"
3526 tinterlace_filter_deps="gpl"
3527 tinterlace_merge_test_deps="tinterlace_filter"
3528 tinterlace_pad_test_deps="tinterlace_filter"
3529 tonemap_filter_deps="const_nan"
3530 tonemap_opencl_filter_deps="opencl const_nan"
3531 transpose_opencl_filter_deps="opencl"
3532 transpose_vaapi_filter_deps="vaapi VAProcPipelineCaps_rotation_flags"
3533 unsharp_opencl_filter_deps="opencl"
3534 uspp_filter_deps="gpl avcodec"
3535 vaguedenoiser_filter_deps="gpl"
3536 vidstabdetect_filter_deps="libvidstab"
3537 vidstabtransform_filter_deps="libvidstab"
3538 libvmaf_filter_deps="libvmaf pthreads"
3539 zmq_filter_deps="libzmq"
3540 zoompan_filter_deps="swscale"
3541 zscale_filter_deps="libzimg const_nan"
3542 scale_vaapi_filter_deps="vaapi"
3543 vpp_qsv_filter_deps="libmfx"
3544 vpp_qsv_filter_select="qsvvpp"
3545 yadif_cuda_filter_deps="ffnvcodec cuda_nvcc"
3546
3547 # examples
3548 avio_dir_cmd_deps="avformat avutil"
3549 avio_reading_deps="avformat avcodec avutil"
3550 decode_audio_example_deps="avcodec avutil"
3551 decode_video_example_deps="avcodec avutil"
3552 demuxing_decoding_example_deps="avcodec avformat avutil"
3553 encode_audio_example_deps="avcodec avutil"
3554 encode_video_example_deps="avcodec avutil"
3555 extract_mvs_example_deps="avcodec avformat avutil"
3556 filter_audio_example_deps="avfilter avutil"
3557 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3558 filtering_video_example_deps="avfilter avcodec avformat avutil"
3559 http_multiclient_example_deps="avformat avutil fork"
3560 hw_decode_example_deps="avcodec avformat avutil"
3561 metadata_example_deps="avformat avutil"
3562 muxing_example_deps="avcodec avformat avutil swscale"
3563 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
3564 remuxing_example_deps="avcodec avformat avutil"
3565 resampling_audio_example_deps="avutil swresample"
3566 scaling_video_example_deps="avutil swscale"
3567 transcode_aac_example_deps="avcodec avformat swresample"
3568 transcoding_example_deps="avfilter avcodec avformat avutil"
3569 vaapi_encode_example_deps="avcodec avutil h264_vaapi_encoder"
3570 vaapi_transcode_example_deps="avcodec avformat avutil h264_vaapi_encoder"
3571
3572 # EXTRALIBS_LIST
3573 cpu_init_extralibs="pthreads_extralibs"
3574 cws2fws_extralibs="zlib_extralibs"
3575
3576 # libraries, in any order
3577 avcodec_deps="avutil"
3578 avcodec_suggest="libm"
3579 avcodec_select="null_bsf"
3580 avdevice_deps="avformat avcodec avutil"
3581 avdevice_suggest="libm"
3582 avfilter_deps="avutil"
3583 avfilter_suggest="libm"
3584 avformat_deps="avcodec avutil"
3585 avformat_suggest="libm network zlib"
3586 avresample_deps="avutil"
3587 avresample_suggest="libm"
3588 avutil_suggest="clock_gettime ffnvcodec libm libdrm libmfx opencl user32 vaapi videotoolbox corefoundation corevideo coremedia bcrypt"
3589 postproc_deps="avutil gpl"
3590 postproc_suggest="libm"
3591 swresample_deps="avutil"
3592 swresample_suggest="libm libsoxr"
3593 swscale_deps="avutil"
3594 swscale_suggest="libm"
3595
3596 avcodec_extralibs="pthreads_extralibs iconv_extralibs dxva2_extralibs"
3597 avfilter_extralibs="pthreads_extralibs"
3598 avutil_extralibs="d3d11va_extralibs nanosleep_extralibs pthreads_extralibs vaapi_drm_extralibs vaapi_x11_extralibs vdpau_x11_extralibs"
3599
3600 # programs
3601 ffmpeg_deps="avcodec avfilter avformat"
3602 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3603                hflip_filter null_filter
3604                transpose_filter trim_filter vflip_filter"
3605 ffmpeg_suggest="ole32 psapi shell32"
3606 ffplay_deps="avcodec avformat swscale swresample sdl2"
3607 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3608 ffplay_suggest="shell32"
3609 ffprobe_deps="avcodec avformat"
3610 ffprobe_suggest="shell32"
3611
3612 # documentation
3613 podpages_deps="perl"
3614 manpages_deps="perl pod2man"
3615 htmlpages_deps="perl"
3616 htmlpages_deps_any="makeinfo_html texi2html"
3617 txtpages_deps="perl makeinfo"
3618 doc_deps_any="manpages htmlpages podpages txtpages"
3619
3620 # default parameters
3621
3622 logfile="ffbuild/config.log"
3623
3624 # installation paths
3625 prefix_default="/usr/local"
3626 bindir_default='${prefix}/bin'
3627 datadir_default='${prefix}/share/ffmpeg'
3628 docdir_default='${prefix}/share/doc/ffmpeg'
3629 incdir_default='${prefix}/include'
3630 libdir_default='${prefix}/lib'
3631 mandir_default='${prefix}/share/man'
3632
3633 # toolchain
3634 ar_default="ar"
3635 cc_default="gcc"
3636 cxx_default="g++"
3637 host_cc_default="gcc"
3638 doxygen_default="doxygen"
3639 install="install"
3640 ln_s_default="ln -s -f"
3641 nm_default="nm -g"
3642 pkg_config_default=pkg-config
3643 ranlib_default="ranlib"
3644 strip_default="strip"
3645 version_script='--version-script'
3646 objformat="elf32"
3647 x86asmexe_default="nasm"
3648 windres_default="windres"
3649 nvcc_default="nvcc"
3650 nvccflags_default="-gencode arch=compute_30,code=sm_30 -O2"
3651 striptype="direct"
3652
3653 # OS
3654 target_os_default=$(tolower $(uname -s))
3655 host_os=$target_os_default
3656
3657 # machine
3658 if test "$target_os_default" = aix; then
3659     arch_default=$(uname -p)
3660     strip_default="strip -X32_64"
3661     nm_default="nm -g -X32_64"
3662 else
3663     arch_default=$(uname -m)
3664 fi
3665 cpu="generic"
3666 intrinsics="none"
3667
3668 # configurable options
3669 enable $PROGRAM_LIST
3670 enable $DOCUMENT_LIST
3671 enable $EXAMPLE_LIST
3672 enable $(filter_out avresample $LIBRARY_LIST)
3673 enable stripping
3674
3675 enable asm
3676 enable debug
3677 enable doc
3678 enable faan faandct faanidct
3679 enable optimizations
3680 enable runtime_cpudetect
3681 enable safe_bitstream_reader
3682 enable static
3683 enable swscale_alpha
3684 enable valgrind_backtrace
3685
3686 sws_max_filter_size_default=256
3687 set_default sws_max_filter_size
3688
3689 # internal components are enabled by default
3690 enable $EXTRALIBS_LIST
3691
3692 # Avoid external, non-system, libraries getting enabled by dependency resolution
3693 disable $EXTERNAL_LIBRARY_LIST $HWACCEL_LIBRARY_LIST
3694
3695 # build settings
3696 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3697 LIBPREF="lib"
3698 LIBSUF=".a"
3699 FULLNAME='$(NAME)$(BUILDSUF)'
3700 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3701 SLIBPREF="lib"
3702 SLIBSUF=".so"
3703 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3704 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3705 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3706 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3707 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3708 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3709 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
3710
3711 asflags_filter=echo
3712 cflags_filter=echo
3713 ldflags_filter=echo
3714
3715 AS_C='-c'
3716 AS_O='-o $@'
3717 CC_C='-c'
3718 CC_E='-E -o $@'
3719 CC_O='-o $@'
3720 CXX_C='-c'
3721 CXX_O='-o $@'
3722 OBJCC_C='-c'
3723 OBJCC_E='-E -o $@'
3724 OBJCC_O='-o $@'
3725 X86ASM_O='-o $@'
3726 LD_O='-o $@'
3727 LD_LIB='-l%'
3728 LD_PATH='-L'
3729 HOSTCC_C='-c'
3730 HOSTCC_E='-E -o $@'
3731 HOSTCC_O='-o $@'
3732 HOSTLD_O='-o $@'
3733 NVCC_C='-c'
3734 NVCC_O='-o $@'
3735
3736 host_extralibs='-lm'
3737 host_cflags_filter=echo
3738 host_ldflags_filter=echo
3739
3740 target_path='$(CURDIR)'
3741
3742 # since the object filename is not given with the -MM flag, the compiler
3743 # is only able to print the basename, and we must add the path ourselves
3744 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3745 DEPFLAGS='-MM'
3746
3747 mkdir -p ffbuild
3748
3749 # find source path
3750 if test -f configure; then
3751     source_path=.
3752 elif test -f src/configure; then
3753     source_path=src
3754 else
3755     source_path=$(cd $(dirname "$0"); pwd)
3756     case "$source_path" in
3757         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3758     esac
3759     test -e "$source_path/config.h" &&
3760         die "Out of tree builds are impossible with config.h in source dir."
3761 fi
3762
3763 for v in "$@"; do
3764     r=${v#*=}
3765     l=${v%"$r"}
3766     r=$(sh_quote "$r")
3767     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3768 done
3769
3770 find_things_extern(){
3771     thing=$1
3772     pattern=$2
3773     file=$source_path/$3
3774     out=${4:-$thing}
3775     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$out/p" "$file"
3776 }
3777
3778 find_filters_extern(){
3779     file=$source_path/$1
3780     sed -n 's/^extern AVFilter ff_[avfsinkrc]\{2,5\}_\([[:alnum:]_]\{1,\}\);/\1_filter/p' $file
3781 }
3782
3783 FILTER_LIST=$(find_filters_extern libavfilter/allfilters.c)
3784 OUTDEV_LIST=$(find_things_extern muxer AVOutputFormat libavdevice/alldevices.c outdev)
3785 INDEV_LIST=$(find_things_extern demuxer AVInputFormat libavdevice/alldevices.c indev)
3786 MUXER_LIST=$(find_things_extern muxer AVOutputFormat libavformat/allformats.c)
3787 DEMUXER_LIST=$(find_things_extern demuxer AVInputFormat libavformat/allformats.c)
3788 ENCODER_LIST=$(find_things_extern encoder AVCodec libavcodec/allcodecs.c)
3789 DECODER_LIST=$(find_things_extern decoder AVCodec libavcodec/allcodecs.c)
3790 CODEC_LIST="
3791     $ENCODER_LIST
3792     $DECODER_LIST
3793 "
3794 PARSER_LIST=$(find_things_extern parser AVCodecParser libavcodec/parsers.c)
3795 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3796 HWACCEL_LIST=$(find_things_extern hwaccel AVHWAccel libavcodec/hwaccels.h)
3797 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3798
3799 AVCODEC_COMPONENTS_LIST="
3800     $BSF_LIST
3801     $DECODER_LIST
3802     $ENCODER_LIST
3803     $HWACCEL_LIST
3804     $PARSER_LIST
3805 "
3806
3807 AVDEVICE_COMPONENTS_LIST="
3808     $INDEV_LIST
3809     $OUTDEV_LIST
3810 "
3811
3812 AVFILTER_COMPONENTS_LIST="
3813     $FILTER_LIST
3814 "
3815
3816 AVFORMAT_COMPONENTS_LIST="
3817     $DEMUXER_LIST
3818     $MUXER_LIST
3819     $PROTOCOL_LIST
3820 "
3821
3822 ALL_COMPONENTS="
3823     $AVCODEC_COMPONENTS_LIST
3824     $AVDEVICE_COMPONENTS_LIST
3825     $AVFILTER_COMPONENTS_LIST
3826     $AVFORMAT_COMPONENTS_LIST
3827 "
3828
3829 for n in $COMPONENT_LIST; do
3830     v=$(toupper ${n%s})_LIST
3831     eval enable \$$v
3832     eval ${n}_if_any="\$$v"
3833 done
3834
3835 enable $ARCH_EXT_LIST
3836
3837 die_unknown(){
3838     echo "Unknown option \"$1\"."
3839     echo "See $0 --help for available options."
3840     exit 1
3841 }
3842
3843 print_in_columns() {
3844     cols=$(expr $ncols / 24)
3845     cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
3846 }
3847
3848 show_list() {
3849     suffix=_$1
3850     shift
3851     echo $* | sed s/$suffix//g | print_in_columns
3852     exit 0
3853 }
3854
3855 rand_list(){
3856     IFS=', '
3857     set -- $*
3858     unset IFS
3859     for thing; do
3860         comp=${thing%:*}
3861         prob=${thing#$comp}
3862         prob=${prob#:}
3863         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3864         echo "prob ${prob:-0.5}"
3865         printf '%s\n' $comp
3866     done
3867 }
3868
3869 do_random(){
3870     action=$1
3871     shift
3872     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3873     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3874 }
3875
3876 for opt do
3877     optval="${opt#*=}"
3878     case "$opt" in
3879         --extra-ldflags=*)
3880             add_ldflags $optval
3881         ;;
3882         --extra-ldexeflags=*)
3883             add_ldexeflags $optval
3884         ;;
3885         --extra-ldsoflags=*)
3886             add_ldsoflags $optval
3887         ;;
3888         --extra-ldlibflags=*)
3889             warn "The --extra-ldlibflags option is only provided for compatibility and will be\n"\
3890                  "removed in the future. Use --extra-ldsoflags instead."
3891             add_ldsoflags $optval
3892         ;;
3893         --extra-libs=*)
3894             add_extralibs $optval
3895         ;;
3896         --disable-devices)
3897             disable $INDEV_LIST $OUTDEV_LIST
3898         ;;
3899         --enable-debug=*)
3900             debuglevel="$optval"
3901         ;;
3902         --disable-programs)
3903             disable $PROGRAM_LIST
3904         ;;
3905         --disable-everything)
3906             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3907         ;;
3908         --disable-all)
3909             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3910             disable $LIBRARY_LIST $PROGRAM_LIST doc
3911             enable avutil
3912         ;;
3913         --enable-random|--disable-random)
3914             action=${opt%%-random}
3915             do_random ${action#--} $COMPONENT_LIST
3916         ;;
3917         --enable-random=*|--disable-random=*)
3918             action=${opt%%-random=*}
3919             do_random ${action#--} $optval
3920         ;;
3921         --enable-sdl)
3922             enable sdl2
3923         ;;
3924         --enable-*=*|--disable-*=*)
3925             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3926             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3927             eval list=\$$(toupper $thing)_LIST
3928             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3929             list=$(filter "$name" $list)
3930             [ "$list" = "" ] && warn "Option $opt did not match anything"
3931             test $action = enable && warn_if_gets_disabled $list
3932             $action $list
3933         ;;
3934         --enable-yasm|--disable-yasm)
3935             warn "The ${opt} option is only provided for compatibility and will be\n"\
3936                  "removed in the future. Use --enable-x86asm / --disable-x86asm instead."
3937             test $opt = --enable-yasm && x86asm=yes || x86asm=no
3938         ;;
3939         --yasmexe=*)
3940             warn "The --yasmexe option is only provided for compatibility and will be\n"\
3941                  "removed in the future. Use --x86asmexe instead."
3942             x86asmexe="$optval"
3943         ;;
3944         --enable-?*|--disable-?*)
3945             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3946             if is_in $option $COMPONENT_LIST; then
3947                 test $action = disable && action=unset
3948                 eval $action \$$(toupper ${option%s})_LIST
3949             elif is_in $option $CMDLINE_SELECT; then
3950                 $action $option
3951             else
3952                 die_unknown $opt
3953             fi
3954         ;;
3955         --list-*)
3956             NAME="${opt#--list-}"
3957             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3958             NAME=${NAME%s}
3959             eval show_list $NAME \$$(toupper $NAME)_LIST
3960         ;;
3961         --help|-h) show_help
3962         ;;
3963         --quiet|-q) quiet=yes
3964         ;;
3965         --fatal-warnings) enable fatal_warnings
3966         ;;
3967         --libfuzzer=*)
3968             libfuzzer_path="$optval"
3969         ;;
3970         *)
3971             optname="${opt%%=*}"
3972             optname="${optname#--}"
3973             optname=$(echo "$optname" | sed 's/-/_/g')
3974             if is_in $optname $CMDLINE_SET; then
3975                 eval $optname='$optval'
3976             elif is_in $optname $CMDLINE_APPEND; then
3977                 append $optname "$optval"
3978             else
3979                 die_unknown $opt
3980             fi
3981         ;;
3982     esac
3983 done
3984
3985 for e in $env; do
3986     eval "export $e"
3987 done
3988
3989 if disabled autodetect; then
3990
3991     # Unless iconv is explicitely disabled by the user, we still want to probe
3992     # for the iconv from the libc.
3993     disabled iconv || enable libc_iconv
3994
3995     disable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3996     disable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3997 fi
3998 # Mark specifically enabled, but normally autodetected libraries as requested.
3999 for lib in $AUTODETECT_LIBS; do
4000     enabled $lib && request $lib
4001 done
4002 #TODO: switch to $AUTODETECT_LIBS when $THREADS_LIST is supported the same way
4003 enable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
4004 enable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
4005
4006 disabled logging && logfile=/dev/null
4007
4008 # command line configuration sanity checks
4009
4010 # we need to build at least one lib type
4011 if ! enabled_any static shared; then
4012     cat <<EOF
4013 At least one library type must be built.
4014 Specify --enable-static to build the static libraries or --enable-shared to
4015 build the shared libraries as well. To only build the shared libraries specify
4016 --disable-static in addition to --enable-shared.
4017 EOF
4018     exit 1
4019 fi
4020
4021 die_license_disabled() {
4022     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
4023 }
4024
4025 die_license_disabled_gpl() {
4026     enabled $1 || { enabled $v && die "$v is incompatible with the gpl and --enable-$1 is not specified."; }
4027 }
4028
4029 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
4030 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
4031
4032 enabled gpl && map "die_license_disabled_gpl nonfree" $EXTERNAL_LIBRARY_NONFREE_LIST
4033 map "die_license_disabled nonfree" $HWACCEL_LIBRARY_NONFREE_LIST
4034
4035 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
4036
4037 if enabled nonfree; then
4038     license="nonfree and unredistributable"
4039 elif enabled gplv3; then
4040     license="GPL version 3 or later"
4041 elif enabled lgplv3; then
4042     license="LGPL version 3 or later"
4043 elif enabled gpl; then
4044     license="GPL version 2 or later"
4045 else
4046     license="LGPL version 2.1 or later"
4047 fi
4048
4049 enabled_all gnutls openssl &&
4050     die "GnuTLS and OpenSSL must not be enabled at the same time."
4051
4052 enabled_all gnutls mbedtls &&
4053     die "GnuTLS and mbedTLS must not be enabled at the same time."
4054
4055 enabled_all openssl mbedtls &&
4056     die "OpenSSL and mbedTLS must not be enabled at the same time."
4057
4058 # Disable all the library-specific components if the library itself
4059 # is disabled, see AVCODEC_LIST and following _LIST variables.
4060
4061 disable_components(){
4062     disabled ${1} && disable $(
4063         eval components="\$$(toupper ${1})_COMPONENTS"
4064         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
4065     )
4066 }
4067
4068 map 'disable_components $v' $LIBRARY_LIST
4069
4070 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
4071 set >> $logfile
4072
4073 test -n "$valgrind" && toolchain="valgrind-memcheck"
4074
4075 enabled ossfuzz && ! echo $CFLAGS | grep -q -- "-fsanitize="  && ! echo $CFLAGS | grep -q -- "-fcoverage-mapping" &&{
4076     add_cflags  -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp -fno-omit-frame-pointer
4077     add_ldflags -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp
4078 }
4079
4080 case "$toolchain" in
4081     *-asan)
4082         cc_default="${toolchain%-asan}"
4083         add_cflags  -fsanitize=address
4084         add_ldflags -fsanitize=address
4085     ;;
4086     *-msan)
4087         cc_default="${toolchain%-msan}"
4088         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
4089         add_ldflags -fsanitize=memory
4090     ;;
4091     *-tsan)
4092         cc_default="${toolchain%-tsan}"
4093         add_cflags  -fsanitize=thread
4094         add_ldflags -fsanitize=thread
4095         case "$toolchain" in
4096             gcc-tsan)
4097                 add_cflags  -fPIC
4098                 add_ldflags -fPIC
4099                 ;;
4100         esac
4101     ;;
4102     *-usan)
4103         cc_default="${toolchain%-usan}"
4104         add_cflags  -fsanitize=undefined
4105         add_ldflags -fsanitize=undefined
4106     ;;
4107     valgrind-*)
4108         target_exec_default="valgrind"
4109         case "$toolchain" in
4110             valgrind-massif)
4111                 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"
4112                 ;;
4113             valgrind-memcheck)
4114                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
4115                 ;;
4116         esac
4117     ;;
4118     msvc)
4119         # Check whether the current MSVC version needs the C99 converter.
4120         # From MSVC 2013 (compiler major version 18) onwards, it does actually
4121         # support enough of C99 to build ffmpeg. Default to the new
4122         # behaviour if the regexp was unable to match anything, since this
4123         # successfully parses the version number of existing supported
4124         # versions that require the converter (MSVC 2010 and 2012).
4125         cl_major_ver=$(cl.exe 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
4126         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
4127             cc_default="cl.exe"
4128             cxx_default="cl.exe"
4129         else
4130             die "Unsupported MSVC version (2013 or newer required)"
4131         fi
4132         ld_default="$source_path/compat/windows/mslink"
4133         nm_default="dumpbin.exe -symbols"
4134         ar_default="lib.exe"
4135         case "$arch" in
4136         aarch64|arm64)
4137             as_default="armasm64.exe"
4138             ;;
4139         arm*)
4140             as_default="armasm.exe"
4141             ;;
4142         esac
4143         target_os_default="win32"
4144         # Use a relative path for TMPDIR. This makes sure all the
4145         # ffconf temp files are written with a relative path, avoiding
4146         # issues with msys/win32 path conversion for MSVC parameters
4147         # such as -Fo<file> or -out:<file>.
4148         TMPDIR=.
4149     ;;
4150     icl)
4151         cc_default="icl"
4152         ld_default="xilink"
4153         nm_default="dumpbin -symbols"
4154         ar_default="xilib"
4155         target_os_default="win32"
4156         TMPDIR=.
4157     ;;
4158     gcov)
4159         add_cflags  -fprofile-arcs -ftest-coverage
4160         add_ldflags -fprofile-arcs -ftest-coverage
4161     ;;
4162     llvm-cov)
4163         add_cflags -fprofile-arcs -ftest-coverage
4164         add_ldflags --coverage
4165     ;;
4166     hardened)
4167         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
4168         add_cflags   -fno-strict-overflow -fstack-protector-all
4169         add_ldflags  -Wl,-z,relro -Wl,-z,now
4170         add_cflags   -fPIE
4171         add_ldexeflags -fPIE -pie
4172     ;;
4173     ?*)
4174         die "Unknown toolchain $toolchain"
4175     ;;
4176 esac
4177
4178 if test -n "$cross_prefix"; then
4179     test -n "$arch" && test -n "$target_os" ||
4180         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
4181     enable cross_compile
4182 fi
4183
4184 set_default target_os
4185 if test "$target_os" = android; then
4186     cc_default="clang"
4187 fi
4188
4189 ar_default="${cross_prefix}${ar_default}"
4190 cc_default="${cross_prefix}${cc_default}"
4191 cxx_default="${cross_prefix}${cxx_default}"
4192 nm_default="${cross_prefix}${nm_default}"
4193 pkg_config_default="${cross_prefix}${pkg_config_default}"
4194 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
4195     ranlib_default="${cross_prefix}${ranlib_default} -D"
4196 else
4197     ranlib_default="${cross_prefix}${ranlib_default}"
4198 fi
4199 strip_default="${cross_prefix}${strip_default}"
4200 windres_default="${cross_prefix}${windres_default}"
4201
4202 sysinclude_default="${sysroot}/usr/include"
4203
4204 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
4205     target_exec x86asmexe nvcc
4206 enabled cross_compile || host_cc_default=$cc
4207 set_default host_cc
4208
4209 pkg_config_fail_message=""
4210 if ! $pkg_config --version >/dev/null 2>&1; then
4211     warn "$pkg_config not found, library detection may fail."
4212     pkg_config=false
4213 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
4214     pkg_config_fail_message="
4215 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
4216 fi
4217
4218 if test $doxygen != $doxygen_default && \
4219   ! $doxygen --version >/dev/null 2>&1; then
4220     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
4221 fi
4222
4223 exesuf() {
4224     case $1 in
4225         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
4226     esac
4227 }
4228
4229 EXESUF=$(exesuf $target_os)
4230 HOSTEXESUF=$(exesuf $host_os)
4231
4232 # set temporary file name
4233 : ${TMPDIR:=$TEMPDIR}
4234 : ${TMPDIR:=$TMP}
4235 : ${TMPDIR:=/tmp}
4236
4237 if [ -n "$tempprefix" ] ; then
4238     mktemp(){
4239         tmpname="$tempprefix.${HOSTNAME}.${UID}"
4240         echo "$tmpname"
4241         mkdir "$tmpname"
4242     }
4243 elif ! test_cmd mktemp -u XXXXXX; then
4244     # simple replacement for missing mktemp
4245     # NOT SAFE FOR GENERAL USE
4246     mktemp(){
4247         tmpname="${2%%XXX*}.${HOSTNAME}.${UID}.$$"
4248         echo "$tmpname"
4249         mkdir "$tmpname"
4250     }
4251 fi
4252
4253 FFTMPDIR=$(mktemp -d "${TMPDIR}/ffconf.XXXXXXXX" 2> /dev/null) ||
4254     die "Unable to create temporary directory in $TMPDIR."
4255
4256 tmpfile(){
4257     tmp="${FFTMPDIR}/test"$2
4258     (set -C; exec > $tmp) 2> /dev/null ||
4259         die "Unable to create temporary file in $FFTMPDIR."
4260     eval $1=$tmp
4261 }
4262
4263 trap 'rm -rf -- "$FFTMPDIR"' EXIT
4264 trap 'exit 2' INT
4265
4266 tmpfile TMPASM .asm
4267 tmpfile TMPC   .c
4268 tmpfile TMPCPP .cpp
4269 tmpfile TMPE   $EXESUF
4270 tmpfile TMPH   .h
4271 tmpfile TMPM   .m
4272 tmpfile TMPCU  .cu
4273 tmpfile TMPO   .o
4274 tmpfile TMPS   .S
4275 tmpfile TMPSH  .sh
4276 tmpfile TMPV   .ver
4277
4278 unset -f mktemp
4279
4280 chmod +x $TMPE
4281
4282 # make sure we can execute files in $TMPDIR
4283 cat > $TMPSH 2>> $logfile <<EOF
4284 #! /bin/sh
4285 EOF
4286 chmod +x $TMPSH >> $logfile 2>&1
4287 if ! $TMPSH >> $logfile 2>&1; then
4288     cat <<EOF
4289 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
4290 variable to another directory and make sure that it is not mounted noexec.
4291 EOF
4292     die "Sanity test failed."
4293 fi
4294
4295 armasm_flags(){
4296     for flag; do
4297         case $flag in
4298             # Filter out MSVC cl.exe options from cflags that shouldn't
4299             # be passed to gas-preprocessor
4300             -M[TD]*)                                            ;;
4301             *)                  echo $flag                      ;;
4302         esac
4303    done
4304 }
4305
4306 cparser_flags(){
4307     for flag; do
4308         case $flag in
4309             -Wno-switch)             echo -Wno-switch-enum ;;
4310             -Wno-format-zero-length) ;;
4311             -Wdisabled-optimization) ;;
4312             -Wno-pointer-sign)       echo -Wno-other ;;
4313             *)                       echo $flag ;;
4314         esac
4315     done
4316 }
4317
4318 msvc_common_flags(){
4319     for flag; do
4320         case $flag in
4321             # In addition to specifying certain flags under the compiler
4322             # specific filters, they must be specified here as well or else the
4323             # generic catch all at the bottom will print the original flag.
4324             -Wall)                ;;
4325             -Wextra)              ;;
4326             -std=c99)             ;;
4327             # Common flags
4328             -fomit-frame-pointer) ;;
4329             -g)                   echo -Z7 ;;
4330             -fno-math-errno)      ;;
4331             -fno-common)          ;;
4332             -fno-signed-zeros)    ;;
4333             -fPIC)                ;;
4334             -mthumb)              ;;
4335             -march=*)             ;;
4336             -lz)                  echo zlib.lib ;;
4337             -lx264)               echo libx264.lib ;;
4338             -lstdc++)             ;;
4339             -l*)                  echo ${flag#-l}.lib ;;
4340             -LARGEADDRESSAWARE)   echo $flag ;;
4341             -L*)                  echo -libpath:${flag#-L} ;;
4342             *)                    echo $flag ;;
4343         esac
4344     done
4345 }
4346
4347 msvc_flags(){
4348     msvc_common_flags "$@"
4349     for flag; do
4350         case $flag in
4351             -Wall)                echo -W3 -wd4018 -wd4146 -wd4244 -wd4305     \
4352                                        -wd4554 ;;
4353             -Wextra)              echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
4354                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
4355                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
4356                                        -wd4307 \
4357                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
4358         esac
4359     done
4360 }
4361
4362 icl_flags(){
4363     msvc_common_flags "$@"
4364     for flag; do
4365         case $flag in
4366             # Despite what Intel's documentation says -Wall, which is supported
4367             # on Windows, does enable remarks so disable them here.
4368             -Wall)                echo $flag -Qdiag-disable:remark ;;
4369             -std=c99)             echo -Qstd=c99 ;;
4370             -flto)                echo -ipo ;;
4371         esac
4372     done
4373 }
4374
4375 icc_flags(){
4376     for flag; do
4377         case $flag in
4378             -flto)                echo -ipo ;;
4379             *)                    echo $flag ;;
4380         esac
4381     done
4382 }
4383
4384 suncc_flags(){
4385     for flag; do
4386         case $flag in
4387             -march=*|-mcpu=*)
4388                 case "${flag#*=}" in
4389                     native)                   echo -xtarget=native       ;;
4390                     v9|niagara)               echo -xarch=sparc          ;;
4391                     ultrasparc)               echo -xarch=sparcvis       ;;
4392                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
4393                     i586|pentium)             echo -xchip=pentium        ;;
4394                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
4395                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
4396                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
4397                     pentium4*)          echo -xtarget=pentium4           ;;
4398                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
4399                     *-sse3)             echo -xarch=sse3                 ;;
4400                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
4401                     bonnell)                   echo -xarch=ssse3         ;;
4402                     corei7|nehalem)            echo -xtarget=nehalem     ;;
4403                     westmere)                  echo -xtarget=westmere    ;;
4404                     silvermont)                echo -xarch=sse4_2        ;;
4405                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
4406                     core-avx*|ivybridge|haswell|broadwell|skylake*|knl)
4407                                                echo -xarch=avx           ;;
4408                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
4409                     btver1)                    echo -xarch=amdsse4a      ;;
4410                     btver2|bdver*|znver*)      echo -xarch=avx           ;;
4411                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
4412                     k8|opteron|athlon64|athlon-fx)
4413                                                echo -xarch=sse2a         ;;
4414                     athlon*)                   echo -xarch=pentium_proa  ;;
4415                 esac
4416                 ;;
4417             -std=c99)             echo -xc99              ;;
4418             -fomit-frame-pointer) echo -xregs=frameptr    ;;
4419             -fPIC)                echo -KPIC -xcode=pic32 ;;
4420             -W*,*)                echo $flag              ;;
4421             -f*-*|-W*|-mimpure-text)                      ;;
4422             -shared)              echo -G                 ;;
4423             *)                    echo $flag              ;;
4424         esac
4425     done
4426 }
4427
4428 probe_cc(){
4429     pfx=$1
4430     _cc=$2
4431     first=$3
4432
4433     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
4434     unset _ld_o _ldflags _ld_lib _ld_path
4435     unset _depflags _DEPCMD _DEPFLAGS
4436     _flags_filter=echo
4437
4438     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
4439         true # no-op to avoid reading stdin in following checks
4440     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
4441         _type=llvm_gcc
4442         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
4443         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
4444         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4445         _cflags_speed='-O3'
4446         _cflags_size='-Os'
4447     elif $_cc -v 2>&1 | grep -qi ^gcc; then
4448         _type=gcc
4449         gcc_version=$($_cc --version | head -n1)
4450         gcc_basever=$($_cc -dumpversion)
4451         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
4452         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
4453         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
4454         case $gcc_basever in
4455             2) ;;
4456             2.*) ;;
4457             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
4458         esac
4459         if [ "$first" = true ]; then
4460             case $gcc_basever in
4461                 4.2*)
4462                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
4463             esac
4464         fi
4465         _cflags_speed='-O3'
4466         _cflags_size='-Os'
4467     elif $_cc --version 2>/dev/null | grep -q ^icc; then
4468         _type=icc
4469         _ident=$($_cc --version | head -n1)
4470         _depflags='-MMD'
4471         _cflags_speed='-O3'
4472         _cflags_size='-Os'
4473         _cflags_noopt='-O1'
4474         _flags_filter=icc_flags
4475     elif $_cc -v 2>&1 | grep -q xlc; then
4476         _type=xlc
4477         _ident=$($_cc -qversion 2>/dev/null | head -n1)
4478         _cflags_speed='-O5'
4479         _cflags_size='-O5 -qcompact'
4480     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
4481         test -d "$sysroot" || die "No valid sysroot specified."
4482         _type=armcc
4483         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
4484         armcc_conf="$PWD/armcc.conf"
4485         $_cc --arm_linux_configure                 \
4486              --arm_linux_config_file="$armcc_conf" \
4487              --configure_sysroot="$sysroot"        \
4488              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
4489              die "Error creating armcc configuration file."
4490         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
4491         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
4492         as_default="${cross_prefix}gcc"
4493         _depflags='-MMD'
4494         _cflags_speed='-O3'
4495         _cflags_size='-Os'
4496     elif $_cc -v 2>&1 | grep -q clang && ! $_cc -? > /dev/null 2>&1; then
4497         _type=clang
4498         _ident=$($_cc --version 2>/dev/null | head -n1)
4499         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4500         _cflags_speed='-O3'
4501         _cflags_size='-Oz'
4502     elif $_cc -V 2>&1 | grep -q Sun; then
4503         _type=suncc
4504         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
4505         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
4506         _DEPFLAGS='-xM1 -xc99'
4507         _ldflags='-std=c99'
4508         _cflags_speed='-O5'
4509         _cflags_size='-O5 -xspace'
4510         _flags_filter=suncc_flags
4511     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
4512         _type=pathscale
4513         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4514         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4515         _cflags_speed='-O2'
4516         _cflags_size='-Os'
4517         _flags_filter='filter_out -Wdisabled-optimization'
4518     elif $_cc -v 2>&1 | grep -q Open64; then
4519         _type=open64
4520         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4521         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4522         _cflags_speed='-O2'
4523         _cflags_size='-Os'
4524         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
4525     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
4526         _type=armasm
4527         _ident=$($_cc | head -n1)
4528         # 4509: "This form of conditional instruction is deprecated"
4529         _flags="-nologo -ignore 4509"
4530         _flags_filter=armasm_flags
4531     elif $_cc 2>&1 | grep -q Intel; then
4532         _type=icl
4533         _ident=$($_cc 2>&1 | head -n1)
4534         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
4535         # Not only is O3 broken on 13.x+ but it is slower on all previous
4536         # versions (tested) as well.
4537         _cflags_speed="-O2"
4538         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
4539         if $_cc 2>&1 | grep -q Linker; then
4540             _ld_o='-out:$@'
4541         else
4542             _ld_o='-Fe$@'
4543         fi
4544         _cc_o='-Fo$@'
4545         _cc_e='-P'
4546         _flags_filter=icl_flags
4547         _ld_lib='lib%.a'
4548         _ld_path='-libpath:'
4549         # -Qdiag-error to make icl error when seeing certain unknown arguments
4550         _flags='-nologo -Qdiag-error:4044,10157'
4551         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
4552         # with MSVC which enables it by default.
4553         _cflags='-Qms0 -Qvec- -Qsimd- -GS -fp:precise'
4554         disable stripping
4555     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
4556         # lld can emulate multiple different linkers; in ms link.exe mode,
4557         # the -? parameter gives the help output which contains an identifyable
4558         # string, while it gives an error in other modes.
4559         _type=lld-link
4560         # The link.exe mode doesn't have a switch for getting the version,
4561         # but we can force it back to gnu mode and get the version from there.
4562         _ident=$($_cc -flavor gnu --version 2>/dev/null)
4563         _ld_o='-out:$@'
4564         _flags_filter=msvc_flags
4565         _ld_lib='lib%.a'
4566         _ld_path='-libpath:'
4567     elif $_cc -nologo- 2>&1 | grep -q Microsoft || { $_cc -v 2>&1 | grep -q clang && $_cc -? > /dev/null 2>&1; }; then
4568         _type=msvc
4569         _ident=$($_cc 2>&1 | head -n1 | tr -d '\r')
4570         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
4571         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
4572         _cflags_speed="-O2"
4573         _cflags_size="-O1"
4574         _cflags_noopt="-O1"
4575         if $_cc -nologo- 2>&1 | grep -q Linker; then
4576             _ld_o='-out:$@'
4577         else
4578             _ld_o='-Fe$@'
4579         fi
4580         _cc_o='-Fo$@'
4581         _cc_e='-P -Fi$@'
4582         _flags_filter=msvc_flags
4583         _ld_lib='lib%.a'
4584         _ld_path='-libpath:'
4585         _flags='-nologo'
4586         disable stripping
4587     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
4588         _type=cparser
4589         _ident=$($_cc --version | head -n1)
4590         _depflags='-MMD'
4591         _cflags_speed='-O4'
4592         _cflags_size='-O2'
4593         _flags_filter=cparser_flags
4594     fi
4595
4596     eval ${pfx}_type=\$_type
4597     eval ${pfx}_ident=\$_ident
4598 }
4599
4600 set_ccvars(){
4601     eval ${1}_C=\${_cc_c-\${${1}_C}}
4602     eval ${1}_E=\${_cc_e-\${${1}_E}}
4603     eval ${1}_O=\${_cc_o-\${${1}_O}}
4604
4605     if [ -n "$_depflags" ]; then
4606         eval ${1}_DEPFLAGS=\$_depflags
4607     else
4608         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
4609         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
4610         eval DEP${1}FLAGS=\$_flags
4611     fi
4612 }
4613
4614 probe_cc cc "$cc" "true"
4615 cflags_filter=$_flags_filter
4616 cflags_speed=$_cflags_speed
4617 cflags_size=$_cflags_size
4618 cflags_noopt=$_cflags_noopt
4619 add_cflags $_flags $_cflags
4620 cc_ldflags=$_ldflags
4621 set_ccvars CC
4622 set_ccvars CXX
4623
4624 probe_cc hostcc "$host_cc"
4625 host_cflags_filter=$_flags_filter
4626 host_cflags_speed=$_cflags_speed
4627 add_host_cflags  $_flags $_cflags
4628 set_ccvars HOSTCC
4629
4630 test -n "$cc_type" && enable $cc_type ||
4631     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4632
4633 : ${as_default:=$cc}
4634 : ${objcc_default:=$cc}
4635 : ${dep_cc_default:=$cc}
4636 : ${ld_default:=$cc}
4637 : ${host_ld_default:=$host_cc}
4638 set_default ar as objcc dep_cc ld ln_s host_ld windres
4639
4640 probe_cc as "$as"
4641 asflags_filter=$_flags_filter
4642 add_asflags $_flags $_cflags
4643 set_ccvars AS
4644
4645 probe_cc objcc "$objcc"
4646 objcflags_filter=$_flags_filter
4647 add_objcflags $_flags $_cflags
4648 set_ccvars OBJC
4649
4650 probe_cc ld "$ld"
4651 ldflags_filter=$_flags_filter
4652 add_ldflags $_flags $_ldflags
4653 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4654 LD_O=${_ld_o-$LD_O}
4655 LD_LIB=${_ld_lib-$LD_LIB}
4656 LD_PATH=${_ld_path-$LD_PATH}
4657
4658 probe_cc hostld "$host_ld"
4659 host_ldflags_filter=$_flags_filter
4660 add_host_ldflags $_flags $_ldflags
4661 HOSTLD_O=${_ld_o-$HOSTLD_O}
4662
4663 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4664     probe_cc depcc "$dep_cc"
4665     CCDEP=${_DEPCMD:-$DEPCMD}
4666     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4667     DEPCCFLAGS=$_flags
4668 fi
4669
4670 if $ar 2>&1 | grep -q Microsoft; then
4671     arflags="-nologo"
4672     ar_o='-out:$@'
4673 elif $ar 2>&1 | grep -q "\[D\] "; then
4674     arflags="rcD"
4675     ar_o='$@'
4676 else
4677     arflags="rc"
4678     ar_o='$@'
4679 fi
4680
4681 add_cflags $extra_cflags
4682 add_cxxflags $extra_cxxflags
4683 add_objcflags $extra_objcflags
4684 add_asflags $extra_cflags
4685
4686 if test -n "$sysroot"; then
4687     case "$cc_type" in
4688         gcc|llvm_gcc|clang)
4689             add_cppflags --sysroot="$sysroot"
4690             add_ldflags --sysroot="$sysroot"
4691         ;;
4692     esac
4693 fi
4694
4695 if test "$cpu" = host; then
4696     enabled cross_compile &&
4697         die "--cpu=host makes no sense when cross-compiling."
4698
4699     case "$cc_type" in
4700         gcc|llvm_gcc)
4701             check_native(){
4702                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4703                 sed -n "/cc1.*$1=/{
4704                             s/.*$1=\\([^ ]*\\).*/\\1/
4705                             p
4706                             q
4707                         }" $TMPE
4708             }
4709             cpu=$(check_native -march || check_native -mcpu)
4710         ;;
4711         clang)
4712             check_native(){
4713                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4714                 sed -n "/cc1.*-target-cpu /{
4715                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4716                             p
4717                             q
4718                         }" $TMPE
4719             }
4720             cpu=$(check_native -march)
4721         ;;
4722     esac
4723
4724     test "${cpu:-host}" = host &&
4725         die "--cpu=host not supported with compiler $cc"
4726 fi
4727
4728 # Deal with common $arch aliases
4729 case "$arch" in
4730     aarch64|arm64)
4731         arch="aarch64"
4732     ;;
4733     arm*|iPad*|iPhone*)
4734         arch="arm"
4735     ;;
4736     mips*|IP*)
4737         case "$arch" in
4738         *el)
4739             add_cppflags -EL
4740             add_ldflags -EL
4741         ;;
4742         *eb)
4743             add_cppflags -EB
4744             add_ldflags -EB
4745         ;;
4746         esac
4747         arch="mips"
4748     ;;
4749     parisc*|hppa*)
4750         arch="parisc"
4751     ;;
4752     "Power Macintosh"|ppc*|powerpc*)
4753         arch="ppc"
4754     ;;
4755     s390|s390x)
4756         arch="s390"
4757     ;;
4758     sh4|sh)
4759         arch="sh4"
4760     ;;
4761     sun4*|sparc*)
4762         arch="sparc"
4763     ;;
4764     tilegx|tile-gx)
4765         arch="tilegx"
4766     ;;
4767     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4768         arch="x86"
4769     ;;
4770 esac
4771
4772 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4773 enable $arch
4774
4775 # Add processor-specific flags
4776 if enabled aarch64; then
4777
4778     case $cpu in
4779         armv*)
4780             cpuflags="-march=$cpu"
4781         ;;
4782         *)
4783             cpuflags="-mcpu=$cpu"
4784         ;;
4785     esac
4786
4787 elif enabled alpha; then
4788
4789     cpuflags="-mcpu=$cpu"
4790
4791 elif enabled arm; then
4792
4793     check_arm_arch() {
4794         test_cpp_condition stddef.h \
4795             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4796             $cpuflags
4797     }
4798
4799     probe_arm_arch() {
4800         if   check_arm_arch 4;        then echo armv4
4801         elif check_arm_arch 4T;       then echo armv4t
4802         elif check_arm_arch 5;        then echo armv5
4803         elif check_arm_arch 5E;       then echo armv5e
4804         elif check_arm_arch 5T;       then echo armv5t
4805         elif check_arm_arch 5TE;      then echo armv5te
4806         elif check_arm_arch 5TEJ;     then echo armv5te
4807         elif check_arm_arch 6;        then echo armv6
4808         elif check_arm_arch 6J;       then echo armv6j
4809         elif check_arm_arch 6K;       then echo armv6k
4810         elif check_arm_arch 6Z;       then echo armv6z
4811         elif check_arm_arch 6KZ;      then echo armv6zk
4812         elif check_arm_arch 6ZK;      then echo armv6zk
4813         elif check_arm_arch 6T2;      then echo armv6t2
4814         elif check_arm_arch 7;        then echo armv7
4815         elif check_arm_arch 7A  7_A;  then echo armv7-a
4816         elif check_arm_arch 7S;       then echo armv7-a
4817         elif check_arm_arch 7R  7_R;  then echo armv7-r
4818         elif check_arm_arch 7M  7_M;  then echo armv7-m
4819         elif check_arm_arch 7EM 7E_M; then echo armv7-m
4820         elif check_arm_arch 8A  8_A;  then echo armv8-a
4821         fi
4822     }
4823
4824     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4825
4826     case $cpu in
4827         armv*)
4828             cpuflags="-march=$cpu"
4829             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4830         ;;
4831         *)
4832             cpuflags="-mcpu=$cpu"
4833             case $cpu in
4834                 cortex-a*)                               subarch=armv7a  ;;
4835                 cortex-r*)                               subarch=armv7r  ;;
4836                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4837                 arm11*)                                  subarch=armv6   ;;
4838                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4839                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4840                 *)                             subarch=$(probe_arm_arch) ;;
4841             esac
4842         ;;
4843     esac
4844
4845     case "$subarch" in
4846         armv5t*)    enable fast_clz                ;;
4847         armv[6-8]*)
4848             enable fast_clz
4849             disabled fast_unaligned || enable fast_unaligned
4850             ;;
4851     esac
4852
4853 elif enabled avr32; then
4854
4855     case $cpu in
4856         ap7[02]0[0-2])
4857             subarch="avr32_ap"
4858             cpuflags="-mpart=$cpu"
4859         ;;
4860         ap)
4861             subarch="avr32_ap"
4862             cpuflags="-march=$cpu"
4863         ;;
4864         uc3[ab]*)
4865             subarch="avr32_uc"
4866             cpuflags="-mcpu=$cpu"
4867         ;;
4868         uc)
4869             subarch="avr32_uc"
4870             cpuflags="-march=$cpu"
4871         ;;
4872     esac
4873
4874 elif enabled bfin; then
4875
4876     cpuflags="-mcpu=$cpu"
4877
4878 elif enabled mips; then
4879
4880     cpuflags="-march=$cpu"
4881
4882     if [ "$cpu" != "generic" ]; then
4883         disable mips32r2
4884         disable mips32r5
4885         disable mips64r2
4886         disable mips32r6
4887         disable mips64r6
4888         disable loongson2
4889         disable loongson3
4890
4891         case $cpu in
4892             24kc|24kf*|24kec|34kc|1004kc|24kef*|34kf*|1004kf*|74kc|74kf)
4893                 enable mips32r2
4894                 disable msa
4895             ;;
4896             p5600|i6400|p6600)
4897                 disable mipsdsp
4898                 disable mipsdspr2
4899             ;;
4900             loongson*)
4901                 enable loongson2
4902                 enable loongson3
4903                 enable local_aligned
4904                 enable simd_align_16
4905                 enable fast_64bit
4906                 enable fast_clz
4907                 enable fast_cmov
4908                 enable fast_unaligned
4909                 disable aligned_stack
4910                 disable mipsdsp
4911                 disable mipsdspr2
4912                 # When gcc version less than 5.3.0, add -fno-expensive-optimizations flag.
4913                 if [ $cc == gcc ]; then
4914                     gcc_version=$(gcc -dumpversion)
4915                     if [ "$(echo "$gcc_version 5.3.0" | tr " " "\n" | sort -rV | head -n 1)" == "$gcc_version" ]; then
4916                         expensive_optimization_flag=""
4917                     else
4918                         expensive_optimization_flag="-fno-expensive-optimizations"
4919                     fi
4920                 fi
4921                 case $cpu in
4922                     loongson3*)
4923                         cpuflags="-march=loongson3a -mhard-float $expensive_optimization_flag"
4924                     ;;
4925                     loongson2e)
4926                         cpuflags="-march=loongson2e -mhard-float $expensive_optimization_flag"
4927                     ;;
4928                     loongson2f)
4929                         cpuflags="-march=loongson2f -mhard-float $expensive_optimization_flag"
4930                     ;;
4931                 esac
4932             ;;
4933             *)
4934                 # Unknown CPU. Disable everything.
4935                 warn "unknown CPU. Disabling all MIPS optimizations."
4936                 disable mipsfpu
4937                 disable mipsdsp
4938                 disable mipsdspr2
4939                 disable msa
4940                 disable mmi
4941             ;;
4942         esac
4943
4944         case $cpu in
4945             24kc)
4946                 disable mipsfpu
4947                 disable mipsdsp
4948                 disable mipsdspr2
4949             ;;
4950             24kf*)
4951                 disable mipsdsp
4952                 disable mipsdspr2
4953             ;;
4954             24kec|34kc|1004kc)
4955                 disable mipsfpu
4956                 disable mipsdspr2
4957             ;;
4958             24kef*|34kf*|1004kf*)
4959                 disable mipsdspr2
4960             ;;
4961             74kc)
4962                 disable mipsfpu
4963             ;;
4964           &nbs