avformat/vividas: Fix memleak of AVIOContext in track_header()
[ffmpeg.git] / configure
1 #!/bin/sh
2 #
3 # FFmpeg configure script
4 #
5 # Copyright (c) 2000-2002 Fabrice Bellard
6 # Copyright (c) 2005-2008 Diego Biurrun
7 # Copyright (c) 2005-2008 Mans Rullgard
8 #
9
10 # Prevent locale nonsense from breaking basic text processing.
11 LC_ALL=C
12 export LC_ALL
13
14 # make sure we are running under a compatible shell
15 # try to make this part work with most shells
16
17 try_exec(){
18     echo "Trying shell $1"
19     type "$1" > /dev/null 2>&1 && exec "$@"
20 }
21
22 unset foo
23 (: ${foo%%bar}) 2> /dev/null
24 E1="$?"
25
26 (: ${foo?}) 2> /dev/null
27 E2="$?"
28
29 if test "$E1" != 0 || test "$E2" = 0; then
30     echo "Broken shell detected.  Trying alternatives."
31     export FF_CONF_EXEC
32     if test "0$FF_CONF_EXEC" -lt 1; then
33         FF_CONF_EXEC=1
34         try_exec bash "$0" "$@"
35     fi
36     if test "0$FF_CONF_EXEC" -lt 2; then
37         FF_CONF_EXEC=2
38         try_exec ksh "$0" "$@"
39     fi
40     if test "0$FF_CONF_EXEC" -lt 3; then
41         FF_CONF_EXEC=3
42         try_exec /usr/xpg4/bin/sh "$0" "$@"
43     fi
44     echo "No compatible shell script interpreter found."
45     echo "This configure script requires a POSIX-compatible shell"
46     echo "such as bash or ksh."
47     echo "THIS IS NOT A BUG IN FFMPEG, DO NOT REPORT IT AS SUCH."
48     echo "Instead, install a working POSIX-compatible shell."
49     echo "Disabling this configure test will create a broken FFmpeg."
50     if test "$BASH_VERSION" = '2.04.0(1)-release'; then
51         echo "This bash version ($BASH_VERSION) is broken on your platform."
52         echo "Upgrade to a later version if available."
53     fi
54     exit 1
55 fi
56
57 test -d /usr/xpg4/bin && PATH=/usr/xpg4/bin:$PATH
58
59 show_help(){
60     cat <<EOF
61 Usage: configure [options]
62 Options: [defaults in brackets after descriptions]
63
64 Help options:
65   --help                   print this message
66   --quiet                  Suppress showing informative output
67   --list-decoders          show all available decoders
68   --list-encoders          show all available encoders
69   --list-hwaccels          show all available hardware accelerators
70   --list-demuxers          show all available demuxers
71   --list-muxers            show all available muxers
72   --list-parsers           show all available parsers
73   --list-protocols         show all available protocols
74   --list-bsfs              show all available bitstream filters
75   --list-indevs            show all available input devices
76   --list-outdevs           show all available output devices
77   --list-filters           show all available filters
78
79 Standard options:
80   --logfile=FILE           log tests and output to FILE [ffbuild/config.log]
81   --disable-logging        do not log configure debug information
82   --fatal-warnings         fail if any configure warning is generated
83   --prefix=PREFIX          install in PREFIX [$prefix_default]
84   --bindir=DIR             install binaries in DIR [PREFIX/bin]
85   --datadir=DIR            install data files in DIR [PREFIX/share/ffmpeg]
86   --docdir=DIR             install documentation in DIR [PREFIX/share/doc/ffmpeg]
87   --libdir=DIR             install libs in DIR [PREFIX/lib]
88   --shlibdir=DIR           install shared libs in DIR [LIBDIR]
89   --incdir=DIR             install includes in DIR [PREFIX/include]
90   --mandir=DIR             install man page in DIR [PREFIX/share/man]
91   --pkgconfigdir=DIR       install pkg-config files in DIR [LIBDIR/pkgconfig]
92   --enable-rpath           use rpath to allow installing libraries in paths
93                            not part of the dynamic linker search path
94                            use rpath when linking programs (USE WITH CARE)
95   --install-name-dir=DIR   Darwin directory name for installed targets
96
97 Licensing options:
98   --enable-gpl             allow use of GPL code, the resulting libs
99                            and binaries will be under GPL [no]
100   --enable-version3        upgrade (L)GPL to version 3 [no]
101   --enable-nonfree         allow use of nonfree code, the resulting libs
102                            and binaries will be unredistributable [no]
103
104 Configuration options:
105   --disable-static         do not build static libraries [no]
106   --enable-shared          build shared libraries [no]
107   --enable-small           optimize for size instead of speed
108   --disable-runtime-cpudetect disable detecting CPU capabilities at runtime (smaller binary)
109   --enable-gray            enable full grayscale support (slower color)
110   --disable-swscale-alpha  disable alpha channel support in swscale
111   --disable-all            disable building components, libraries and programs
112   --disable-autodetect     disable automatically detected external libraries [no]
113
114 Program options:
115   --disable-programs       do not build command line programs
116   --disable-ffmpeg         disable ffmpeg build
117   --disable-ffplay         disable ffplay build
118   --disable-ffprobe        disable ffprobe build
119
120 Documentation options:
121   --disable-doc            do not build documentation
122   --disable-htmlpages      do not build HTML documentation pages
123   --disable-manpages       do not build man documentation pages
124   --disable-podpages       do not build POD documentation pages
125   --disable-txtpages       do not build text documentation pages
126
127 Component options:
128   --disable-avdevice       disable libavdevice build
129   --disable-avcodec        disable libavcodec build
130   --disable-avformat       disable libavformat build
131   --disable-swresample     disable libswresample build
132   --disable-swscale        disable libswscale build
133   --disable-postproc       disable libpostproc build
134   --disable-avfilter       disable libavfilter build
135   --enable-avresample      enable libavresample build (deprecated) [no]
136   --disable-pthreads       disable pthreads [autodetect]
137   --disable-w32threads     disable Win32 threads [autodetect]
138   --disable-os2threads     disable OS/2 threads [autodetect]
139   --disable-network        disable network support [no]
140   --disable-dct            disable DCT code
141   --disable-dwt            disable DWT code
142   --disable-error-resilience disable error resilience code
143   --disable-lsp            disable LSP code
144   --disable-lzo            disable LZO decoder code
145   --disable-mdct           disable MDCT code
146   --disable-rdft           disable RDFT code
147   --disable-fft            disable FFT code
148   --disable-faan           disable floating point AAN (I)DCT code
149   --disable-pixelutils     disable pixel utils in libavutil
150
151 Individual component options:
152   --disable-everything     disable all components listed below
153   --disable-encoder=NAME   disable encoder NAME
154   --enable-encoder=NAME    enable encoder NAME
155   --disable-encoders       disable all encoders
156   --disable-decoder=NAME   disable decoder NAME
157   --enable-decoder=NAME    enable decoder NAME
158   --disable-decoders       disable all decoders
159   --disable-hwaccel=NAME   disable hwaccel NAME
160   --enable-hwaccel=NAME    enable hwaccel NAME
161   --disable-hwaccels       disable all hwaccels
162   --disable-muxer=NAME     disable muxer NAME
163   --enable-muxer=NAME      enable muxer NAME
164   --disable-muxers         disable all muxers
165   --disable-demuxer=NAME   disable demuxer NAME
166   --enable-demuxer=NAME    enable demuxer NAME
167   --disable-demuxers       disable all demuxers
168   --enable-parser=NAME     enable parser NAME
169   --disable-parser=NAME    disable parser NAME
170   --disable-parsers        disable all parsers
171   --enable-bsf=NAME        enable bitstream filter NAME
172   --disable-bsf=NAME       disable bitstream filter NAME
173   --disable-bsfs           disable all bitstream filters
174   --enable-protocol=NAME   enable protocol NAME
175   --disable-protocol=NAME  disable protocol NAME
176   --disable-protocols      disable all protocols
177   --enable-indev=NAME      enable input device NAME
178   --disable-indev=NAME     disable input device NAME
179   --disable-indevs         disable input devices
180   --enable-outdev=NAME     enable output device NAME
181   --disable-outdev=NAME    disable output device NAME
182   --disable-outdevs        disable output devices
183   --disable-devices        disable all devices
184   --enable-filter=NAME     enable filter NAME
185   --disable-filter=NAME    disable filter NAME
186   --disable-filters        disable all filters
187
188 External library support:
189
190   Using any of the following switches will allow FFmpeg to link to the
191   corresponding external library. All the components depending on that library
192   will become enabled, if all their other dependencies are met and they are not
193   explicitly disabled. E.g. --enable-libwavpack will enable linking to
194   libwavpack and allow the libwavpack encoder to be built, unless it is
195   specifically disabled with --disable-encoder=libwavpack.
196
197   Note that only the system libraries are auto-detected. All the other external
198   libraries must be explicitly enabled.
199
200   Also note that the following help text describes the purpose of the libraries
201   themselves, not all their features will necessarily be usable by FFmpeg.
202
203   --disable-alsa           disable ALSA support [autodetect]
204   --disable-appkit         disable Apple AppKit framework [autodetect]
205   --disable-avfoundation   disable Apple AVFoundation framework [autodetect]
206   --enable-avisynth        enable reading of AviSynth script files [no]
207   --disable-bzlib          disable bzlib [autodetect]
208   --disable-coreimage      disable Apple CoreImage framework [autodetect]
209   --enable-chromaprint     enable audio fingerprinting with chromaprint [no]
210   --enable-frei0r          enable frei0r video filtering [no]
211   --enable-gcrypt          enable gcrypt, needed for rtmp(t)e support
212                            if openssl, librtmp or gmp is not used [no]
213   --enable-gmp             enable gmp, needed for rtmp(t)e support
214                            if openssl or librtmp is not used [no]
215   --enable-gnutls          enable gnutls, needed for https support
216                            if openssl, libtls or mbedtls is not used [no]
217   --disable-iconv          disable iconv [autodetect]
218   --enable-jni             enable JNI support [no]
219   --enable-ladspa          enable LADSPA audio filtering [no]
220   --enable-libaom          enable AV1 video encoding/decoding via libaom [no]
221   --enable-libaribb24      enable ARIB text and caption decoding via libaribb24 [no]
222   --enable-libass          enable libass subtitles rendering,
223                            needed for subtitles and ass filter [no]
224   --enable-libbluray       enable BluRay reading using libbluray [no]
225   --enable-libbs2b         enable bs2b DSP library [no]
226   --enable-libcaca         enable textual display using libcaca [no]
227   --enable-libcelt         enable CELT decoding via libcelt [no]
228   --enable-libcdio         enable audio CD grabbing with libcdio [no]
229   --enable-libcodec2       enable codec2 en/decoding using libcodec2 [no]
230   --enable-libdav1d        enable AV1 decoding via libdav1d [no]
231   --enable-libdavs2        enable AVS2 decoding via libdavs2 [no]
232   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
233                            and libraw1394 [no]
234   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
235   --enable-libflite        enable flite (voice synthesis) support via libflite [no]
236   --enable-libfontconfig   enable libfontconfig, useful for drawtext filter [no]
237   --enable-libfreetype     enable libfreetype, needed for drawtext filter [no]
238   --enable-libfribidi      enable libfribidi, improves drawtext filter [no]
239   --enable-libgme          enable Game Music Emu via libgme [no]
240   --enable-libgsm          enable GSM de/encoding via libgsm [no]
241   --enable-libiec61883     enable iec61883 via libiec61883 [no]
242   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
243   --enable-libjack         enable JACK audio sound server [no]
244   --enable-libklvanc       enable Kernel Labs VANC processing [no]
245   --enable-libkvazaar      enable HEVC encoding via libkvazaar [no]
246   --enable-liblensfun      enable lensfun lens correction [no]
247   --enable-libmodplug      enable ModPlug via libmodplug [no]
248   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
249   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
250   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
251   --enable-libopencv       enable video filtering via libopencv [no]
252   --enable-libopenh264     enable H.264 encoding via OpenH264 [no]
253   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
254   --enable-libopenmpt      enable decoding tracked files via libopenmpt [no]
255   --enable-libopus         enable Opus de/encoding via libopus [no]
256   --enable-libpulse        enable Pulseaudio input via libpulse [no]
257   --enable-librsvg         enable SVG rasterization via librsvg [no]
258   --enable-librubberband   enable rubberband needed for rubberband filter [no]
259   --enable-librtmp         enable RTMP[E] support via librtmp [no]
260   --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
261   --enable-libsmbclient    enable Samba protocol via libsmbclient [no]
262   --enable-libsnappy       enable Snappy compression, needed for hap encoding [no]
263   --enable-libsoxr         enable Include libsoxr resampling [no]
264   --enable-libspeex        enable Speex de/encoding via libspeex [no]
265   --enable-libsrt          enable Haivision SRT protocol via libsrt [no]
266   --enable-libssh          enable SFTP protocol via libssh [no]
267   --enable-libtensorflow   enable TensorFlow as a DNN module backend
268                            for DNN based filters like sr [no]
269   --enable-libtesseract    enable Tesseract, needed for ocr filter [no]
270   --enable-libtheora       enable Theora encoding via libtheora [no]
271   --enable-libtls          enable LibreSSL (via libtls), needed for https support
272                            if openssl, gnutls or mbedtls is not used [no]
273   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
274   --enable-libv4l2         enable libv4l2/v4l-utils [no]
275   --enable-libvidstab      enable video stabilization using vid.stab [no]
276   --enable-libvmaf         enable vmaf filter via libvmaf [no]
277   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
278   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
279                            native implementation exists [no]
280   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
281   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
282   --enable-libwebp         enable WebP encoding via libwebp [no]
283   --enable-libx264         enable H.264 encoding via x264 [no]
284   --enable-libx265         enable HEVC encoding via x265 [no]
285   --enable-libxavs         enable AVS encoding via xavs [no]
286   --enable-libxavs2        enable AVS2 encoding via xavs2 [no]
287   --enable-libxcb          enable X11 grabbing using XCB [autodetect]
288   --enable-libxcb-shm      enable X11 grabbing shm communication [autodetect]
289   --enable-libxcb-xfixes   enable X11 grabbing mouse rendering [autodetect]
290   --enable-libxcb-shape    enable X11 grabbing shape rendering [autodetect]
291   --enable-libxvid         enable Xvid encoding via xvidcore,
292                            native MPEG-4/Xvid encoder exists [no]
293   --enable-libxml2         enable XML parsing using the C library libxml2, needed
294                            for dash demuxing support [no]
295   --enable-libzimg         enable z.lib, needed for zscale filter [no]
296   --enable-libzmq          enable message passing via libzmq [no]
297   --enable-libzvbi         enable teletext support via libzvbi [no]
298   --enable-lv2             enable LV2 audio filtering [no]
299   --disable-lzma           disable lzma [autodetect]
300   --enable-decklink        enable Blackmagic DeckLink I/O support [no]
301   --enable-mbedtls         enable mbedTLS, needed for https support
302                            if openssl, gnutls or libtls is not used [no]
303   --enable-mediacodec      enable Android MediaCodec support [no]
304   --enable-libmysofa       enable libmysofa, needed for sofalizer filter [no]
305   --enable-openal          enable OpenAL 1.1 capture support [no]
306   --enable-opencl          enable OpenCL processing [no]
307   --enable-opengl          enable OpenGL rendering [no]
308   --enable-openssl         enable openssl, needed for https support
309                            if gnutls, libtls or mbedtls is not used [no]
310   --enable-pocketsphinx    enable PocketSphinx, needed for asr filter [no]
311   --disable-sndio          disable sndio support [autodetect]
312   --disable-schannel       disable SChannel SSP, needed for TLS support on
313                            Windows if openssl and gnutls are not used [autodetect]
314   --disable-sdl2           disable sdl2 [autodetect]
315   --disable-securetransport disable Secure Transport, needed for TLS support
316                            on OSX if openssl and gnutls are not used [autodetect]
317   --enable-vapoursynth     enable VapourSynth demuxer [no]
318   --disable-xlib           disable xlib [autodetect]
319   --disable-zlib           disable zlib [autodetect]
320
321   The following libraries provide various hardware acceleration features:
322   --disable-amf            disable AMF video encoding code [autodetect]
323   --disable-audiotoolbox   disable Apple AudioToolbox code [autodetect]
324   --enable-cuda-nvcc       enable Nvidia CUDA compiler [no]
325   --disable-cuda-llvm      disable CUDA compilation using clang [autodetect]
326   --disable-cuvid          disable Nvidia CUVID support [autodetect]
327   --disable-d3d11va        disable Microsoft Direct3D 11 video acceleration code [autodetect]
328   --disable-dxva2          disable Microsoft DirectX 9 video acceleration code [autodetect]
329   --disable-ffnvcodec      disable dynamically linked Nvidia code [autodetect]
330   --enable-libdrm          enable DRM code (Linux) [no]
331   --enable-libmfx          enable Intel MediaSDK (AKA Quick Sync Video) code via libmfx [no]
332   --enable-libnpp          enable Nvidia Performance Primitives-based code [no]
333   --enable-mmal            enable Broadcom Multi-Media Abstraction Layer (Raspberry Pi) via MMAL [no]
334   --disable-nvdec          disable Nvidia video decoding acceleration (via hwaccel) [autodetect]
335   --disable-nvenc          disable Nvidia video encoding code [autodetect]
336   --enable-omx             enable OpenMAX IL code [no]
337   --enable-omx-rpi         enable OpenMAX IL code for Raspberry Pi [no]
338   --enable-rkmpp           enable Rockchip Media Process Platform code [no]
339   --disable-v4l2-m2m       disable V4L2 mem2mem code [autodetect]
340   --disable-vaapi          disable Video Acceleration API (mainly Unix/Intel) code [autodetect]
341   --disable-vdpau          disable Nvidia Video Decode and Presentation API for Unix code [autodetect]
342   --disable-videotoolbox   disable VideoToolbox code [autodetect]
343
344 Toolchain options:
345   --arch=ARCH              select architecture [$arch]
346   --cpu=CPU                select the minimum required CPU (affects
347                            instruction selection, may crash on older CPUs)
348   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
349   --progs-suffix=SUFFIX    program name suffix []
350   --enable-cross-compile   assume a cross-compiler is used
351   --sysroot=PATH           root of cross-build tree
352   --sysinclude=PATH        location of cross-build system headers
353   --target-os=OS           compiler targets OS [$target_os]
354   --target-exec=CMD        command to run executables on target
355   --target-path=DIR        path to view of build directory on target
356   --target-samples=DIR     path to samples directory on target
357   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
358   --toolchain=NAME         set tool defaults according to NAME
359                            (gcc-asan, clang-asan, gcc-msan, clang-msan,
360                            gcc-tsan, clang-tsan, gcc-usan, clang-usan,
361                            valgrind-massif, valgrind-memcheck,
362                            msvc, icl, gcov, llvm-cov, hardened)
363   --nm=NM                  use nm tool NM [$nm_default]
364   --ar=AR                  use archive tool AR [$ar_default]
365   --as=AS                  use assembler AS [$as_default]
366   --ln_s=LN_S              use symbolic link tool LN_S [$ln_s_default]
367   --strip=STRIP            use strip tool STRIP [$strip_default]
368   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
369   --x86asmexe=EXE          use nasm-compatible assembler EXE [$x86asmexe_default]
370   --cc=CC                  use C compiler CC [$cc_default]
371   --cxx=CXX                use C compiler CXX [$cxx_default]
372   --objcc=OCC              use ObjC compiler OCC [$cc_default]
373   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
374   --nvcc=NVCC              use Nvidia CUDA compiler NVCC or clang [$nvcc_default]
375   --ld=LD                  use linker LD [$ld_default]
376   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
377   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
378   --ranlib=RANLIB          use ranlib RANLIB [$ranlib_default]
379   --doxygen=DOXYGEN        use DOXYGEN to generate API doc [$doxygen_default]
380   --host-cc=HOSTCC         use host C compiler HOSTCC
381   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
382   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
383   --host-ld=HOSTLD         use host linker HOSTLD
384   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
385   --host-extralibs=HLIBS   use libs HLIBS when linking for host
386   --host-os=OS             compiler host OS [$target_os]
387   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
388   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
389   --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
390   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
391   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
392   --extra-ldsoflags=ELDFLAGS add ELDFLAGS to LDSOFLAGS [$LDSOFLAGS]
393   --extra-libs=ELIBS       add ELIBS [$ELIBS]
394   --extra-version=STRING   version string suffix []
395   --optflags=OPTFLAGS      override optimization-related compiler flags
396   --nvccflags=NVCCFLAGS    override nvcc flags [$nvccflags_default]
397   --build-suffix=SUFFIX    library name suffix []
398   --enable-pic             build position-independent code
399   --enable-thumb           compile for Thumb instruction set
400   --enable-lto             use link-time optimization
401   --env="ENV=override"     override the environment variables
402
403 Advanced options (experts only):
404   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
405   --custom-allocator=NAME  use a supported custom allocator
406   --disable-symver         disable symbol versioning
407   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
408   --disable-safe-bitstream-reader
409                            disable buffer boundary checking in bitreaders
410                            (faster, but may crash)
411   --sws-max-filter-size=N  the max filter size swscale uses [$sws_max_filter_size_default]
412
413 Optimization options (experts only):
414   --disable-asm            disable all assembly optimizations
415   --disable-altivec        disable AltiVec optimizations
416   --disable-vsx            disable VSX optimizations
417   --disable-power8         disable POWER8 optimizations
418   --disable-amd3dnow       disable 3DNow! optimizations
419   --disable-amd3dnowext    disable 3DNow! extended optimizations
420   --disable-mmx            disable MMX optimizations
421   --disable-mmxext         disable MMXEXT optimizations
422   --disable-sse            disable SSE optimizations
423   --disable-sse2           disable SSE2 optimizations
424   --disable-sse3           disable SSE3 optimizations
425   --disable-ssse3          disable SSSE3 optimizations
426   --disable-sse4           disable SSE4 optimizations
427   --disable-sse42          disable SSE4.2 optimizations
428   --disable-avx            disable AVX optimizations
429   --disable-xop            disable XOP optimizations
430   --disable-fma3           disable FMA3 optimizations
431   --disable-fma4           disable FMA4 optimizations
432   --disable-avx2           disable AVX2 optimizations
433   --disable-avx512         disable AVX-512 optimizations
434   --disable-aesni          disable AESNI optimizations
435   --disable-armv5te        disable armv5te optimizations
436   --disable-armv6          disable armv6 optimizations
437   --disable-armv6t2        disable armv6t2 optimizations
438   --disable-vfp            disable VFP optimizations
439   --disable-neon           disable NEON optimizations
440   --disable-inline-asm     disable use of inline assembly
441   --disable-x86asm         disable use of standalone x86 assembly
442   --disable-mipsdsp        disable MIPS DSP ASE R1 optimizations
443   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
444   --disable-msa            disable MSA optimizations
445   --disable-msa2           disable MSA2 optimizations
446   --disable-mipsfpu        disable floating point MIPS optimizations
447   --disable-mmi            disable Loongson SIMD optimizations
448   --disable-fast-unaligned consider unaligned accesses slow
449
450 Developer options (useful when working on FFmpeg itself):
451   --disable-debug          disable debugging symbols
452   --enable-debug=LEVEL     set the debug level [$debuglevel]
453   --disable-optimizations  disable compiler optimizations
454   --enable-extra-warnings  enable more compiler warnings
455   --disable-stripping      disable stripping of executables and shared libraries
456   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
457                            2 causes a slowdown at runtime.
458   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
459   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
460                            leaks and errors, using the specified valgrind binary.
461                            Cannot be combined with --target-exec
462   --enable-ftrapv          Trap arithmetic overflows
463   --samples=PATH           location of test samples for FATE, if not set use
464                            \$FATE_SAMPLES at make invocation time.
465   --enable-neon-clobber-test check NEON registers for clobbering (should be
466                            used only for debugging purposes)
467   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
468                            should be used only for debugging purposes)
469   --enable-random          randomly enable/disable components
470   --disable-random
471   --enable-random=LIST     randomly enable/disable specific components or
472   --disable-random=LIST    component groups. LIST is a comma-separated list
473                            of NAME[:PROB] entries where NAME is a component
474                            (group) and PROB the probability associated with
475                            NAME (default 0.5).
476   --random-seed=VALUE      seed value for --enable/disable-random
477   --disable-valgrind-backtrace do not print a backtrace under Valgrind
478                            (only applies to --disable-optimizations builds)
479   --enable-ossfuzz         Enable building fuzzer tool
480   --libfuzzer=PATH         path to libfuzzer
481   --ignore-tests=TESTS     comma-separated list (without "fate-" prefix
482                            in the name) of tests whose result is ignored
483   --enable-linux-perf      enable Linux Performance Monitor API
484
485 NOTE: Object files are built at the place where configure is launched.
486 EOF
487   exit 0
488 }
489
490 if test -t 1 && which tput >/dev/null 2>&1; then
491     ncolors=$(tput colors)
492     if test -n "$ncolors" && test $ncolors -ge 8; then
493         bold_color=$(tput bold)
494         warn_color=$(tput setaf 3)
495         error_color=$(tput setaf 1)
496         reset_color=$(tput sgr0)
497     fi
498     # 72 used instead of 80 since that's the default of pr
499     ncols=$(tput cols)
500 fi
501 : ${ncols:=72}
502
503 log(){
504     echo "$@" >> $logfile
505 }
506
507 log_file(){
508     log BEGIN "$1"
509     log_file_i=1
510     while IFS= read -r log_file_line; do
511         printf '%5d\t%s\n' "$log_file_i" "$log_file_line"
512         log_file_i=$(($log_file_i+1))
513     done < "$1" >> "$logfile"
514     log END "$1"
515 }
516
517 warn(){
518     log "WARNING: $*"
519     WARNINGS="${WARNINGS}WARNING: $*\n"
520 }
521
522 die(){
523     log "$@"
524     echo "$error_color$bold_color$@$reset_color"
525     cat <<EOF
526
527 If you think configure made a mistake, make sure you are using the latest
528 version from Git.  If the latest version fails, report the problem to the
529 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
530 EOF
531     if disabled logging; then
532         cat <<EOF
533 Rerun configure with logging enabled (do not use --disable-logging), and
534 include the log this produces with your report.
535 EOF
536     else
537         cat <<EOF
538 Include the log file "$logfile" produced by configure as this will help
539 solve the problem.
540 EOF
541     fi
542     exit 1
543 }
544
545 # Avoid locale weirdness, besides we really just want to translate ASCII.
546 toupper(){
547     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
548 }
549
550 tolower(){
551     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
552 }
553
554 c_escape(){
555     echo "$*" | sed 's/["\\]/\\\0/g'
556 }
557
558 sh_quote(){
559     v=$(echo "$1" | sed "s/'/'\\\\''/g")
560     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
561     echo "$v"
562 }
563
564 cleanws(){
565     echo "$@" | sed 's/^ *//;s/[[:space:]][[:space:]]*/ /g;s/ *$//'
566 }
567
568 filter(){
569     pat=$1
570     shift
571     for v; do
572         eval "case '$v' in $pat) printf '%s ' '$v' ;; esac"
573     done
574 }
575
576 filter_out(){
577     pat=$1
578     shift
579     for v; do
580         eval "case '$v' in $pat) ;; *) printf '%s ' '$v' ;; esac"
581     done
582 }
583
584 map(){
585     m=$1
586     shift
587     for v; do eval $m; done
588 }
589
590 add_suffix(){
591     suffix=$1
592     shift
593     for v; do echo ${v}${suffix}; done
594 }
595
596 remove_suffix(){
597     suffix=$1
598     shift
599     for v; do echo ${v%$suffix}; done
600 }
601
602 set_all(){
603     value=$1
604     shift
605     for var in $*; do
606         eval $var=$value
607     done
608 }
609
610 set_weak(){
611     value=$1
612     shift
613     for var; do
614         eval : \${$var:=$value}
615     done
616 }
617
618 sanitize_var_name(){
619     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
620 }
621
622 set_sanitized(){
623     var=$1
624     shift
625     eval $(sanitize_var_name "$var")='$*'
626 }
627
628 get_sanitized(){
629     eval echo \$$(sanitize_var_name "$1")
630 }
631
632 pushvar(){
633     for pvar in $*; do
634         eval level=\${${pvar}_level:=0}
635         eval ${pvar}_${level}="\$$pvar"
636         eval ${pvar}_level=$(($level+1))
637     done
638 }
639
640 popvar(){
641     for pvar in $*; do
642         eval level=\${${pvar}_level:-0}
643         test $level = 0 && continue
644         eval level=$(($level-1))
645         eval $pvar="\${${pvar}_${level}}"
646         eval ${pvar}_level=$level
647         eval unset ${pvar}_${level}
648     done
649 }
650
651 request(){
652     for var in $*; do
653         eval ${var}_requested=yes
654         eval $var=
655     done
656 }
657
658 warn_if_gets_disabled(){
659     for var in $*; do
660         WARN_IF_GETS_DISABLED_LIST="$WARN_IF_GETS_DISABLED_LIST $var"
661     done
662 }
663
664 enable(){
665     set_all yes $*
666 }
667
668 disable(){
669     set_all no $*
670 }
671
672 disable_with_reason(){
673     disable $1
674     eval "${1}_disable_reason=\"$2\""
675     if requested $1; then
676         die "ERROR: $1 requested, but $2"
677     fi
678 }
679
680 enable_weak(){
681     set_weak yes $*
682 }
683
684 disable_weak(){
685     set_weak no $*
686 }
687
688 enable_sanitized(){
689     for var; do
690         enable $(sanitize_var_name $var)
691     done
692 }
693
694 disable_sanitized(){
695     for var; do
696         disable $(sanitize_var_name $var)
697     done
698 }
699
700 do_enable_deep(){
701     for var; do
702         enabled $var && continue
703         set -- $var
704         eval enable_deep \$${var}_select
705         var=$1
706         eval enable_deep_weak \$${var}_suggest
707     done
708 }
709
710 enable_deep(){
711     do_enable_deep $*
712     enable $*
713 }
714
715 enable_deep_weak(){
716     for var; do
717         disabled $var && continue
718         set -- $var
719         do_enable_deep $var
720         var=$1
721         enable_weak $var
722     done
723 }
724
725 requested(){
726     test "${1#!}" = "$1" && op="=" || op="!="
727     eval test "x\$${1#!}_requested" $op "xyes"
728 }
729
730 enabled(){
731     test "${1#!}" = "$1" && op="=" || op="!="
732     eval test "x\$${1#!}" $op "xyes"
733 }
734
735 disabled(){
736     test "${1#!}" = "$1" && op="=" || op="!="
737     eval test "x\$${1#!}" $op "xno"
738 }
739
740 enabled_all(){
741     for opt; do
742         enabled $opt || return 1
743     done
744 }
745
746 disabled_all(){
747     for opt; do
748         disabled $opt || return 1
749     done
750 }
751
752 enabled_any(){
753     for opt; do
754         enabled $opt && return 0
755     done
756 }
757
758 disabled_any(){
759     for opt; do
760         disabled $opt && return 0
761     done
762     return 1
763 }
764
765 set_default(){
766     for opt; do
767         eval : \${$opt:=\$${opt}_default}
768     done
769 }
770
771 is_in(){
772     value=$1
773     shift
774     for var in $*; do
775         [ $var = $value ] && return 0
776     done
777     return 1
778 }
779
780 # The cfg loop is very hot (several thousands iterations), and in bash also
781 # potentialy quite slow. Try to abort the iterations early, preferably without
782 # calling functions. 70%+ of the time cfg is already done or without deps.
783 check_deps(){
784     for cfg; do
785         eval [ x\$${cfg}_checking = xdone ] && continue
786         eval [ x\$${cfg}_checking = xinprogress ] && die "Circular dependency for $cfg."
787
788         eval "
789         dep_all=\$${cfg}_deps
790         dep_any=\$${cfg}_deps_any
791         dep_con=\$${cfg}_conflict
792         dep_sel=\$${cfg}_select
793         dep_sgs=\$${cfg}_suggest
794         dep_ifa=\$${cfg}_if
795         dep_ifn=\$${cfg}_if_any
796         "
797
798         # most of the time here $cfg has no deps - avoid costly no-op work
799         if [ "$dep_all$dep_any$dep_con$dep_sel$dep_sgs$dep_ifa$dep_ifn" ]; then
800             eval ${cfg}_checking=inprogress
801
802             set -- $cfg "$dep_all" "$dep_any" "$dep_con" "$dep_sel" "$dep_sgs" "$dep_ifa" "$dep_ifn"
803             check_deps $dep_all $dep_any $dep_con $dep_sel $dep_sgs $dep_ifa $dep_ifn
804             cfg=$1; dep_all=$2; dep_any=$3; dep_con=$4; dep_sel=$5 dep_sgs=$6; dep_ifa=$7; dep_ifn=$8
805
806             [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
807             [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
808             enabled_all  $dep_all || { disable_with_reason $cfg "not all dependencies are satisfied: $dep_all"; }
809             enabled_any  $dep_any || { disable_with_reason $cfg "not any dependency is satisfied: $dep_any"; }
810             disabled_all $dep_con || { disable_with_reason $cfg "some conflicting dependencies are unsatisfied: $dep_con"; }
811             disabled_any $dep_sel && { disable_with_reason $cfg "some selected dependency is unsatisfied: $dep_sel"; }
812
813             enabled $cfg && enable_deep_weak $dep_sel $dep_sgs
814
815             for dep in $dep_all $dep_any $dep_sel $dep_sgs; do
816                 # filter out library deps, these do not belong in extralibs
817                 is_in $dep $LIBRARY_LIST && continue
818                 enabled $dep && eval append ${cfg}_extralibs ${dep}_extralibs
819             done
820         fi
821
822         eval ${cfg}_checking=done
823     done
824 }
825
826 print_config(){
827     pfx=$1
828     files=$2
829     shift 2
830     map 'eval echo "$v \${$v:-no}"' "$@" |
831     awk "BEGIN { split(\"$files\", files) }
832         {
833             c = \"$pfx\" toupper(\$1);
834             v = \$2;
835             sub(/yes/, 1, v);
836             sub(/no/,  0, v);
837             for (f in files) {
838                 file = files[f];
839                 if (file ~ /\\.h\$/) {
840                     printf(\"#define %s %d\\n\", c, v) >>file;
841                 } else if (file ~ /\\.asm\$/) {
842                     printf(\"%%define %s %d\\n\", c, v) >>file;
843                 } else if (file ~ /\\.mak\$/) {
844                     n = -v ? \"\" : \"!\";
845                     printf(\"%s%s=yes\\n\", n, c) >>file;
846                 } else if (file ~ /\\.texi\$/) {
847                     pre = -v ? \"\" : \"@c \";
848                     yesno = \$2;
849                     c2 = tolower(c);
850                     gsub(/_/, \"-\", c2);
851                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
852                 }
853             }
854         }"
855 }
856
857 print_enabled(){
858     suf=$1
859     shift
860     for v; do
861         enabled $v && printf "%s\n" ${v%$suf}
862     done
863 }
864
865 append(){
866     var=$1
867     shift
868     eval "$var=\"\$$var $*\""
869 }
870
871 prepend(){
872     var=$1
873     shift
874     eval "$var=\"$* \$$var\""
875 }
876
877 reverse () {
878     eval '
879         reverse_out=
880         for v in $'$1'; do
881             reverse_out="$v $reverse_out"
882         done
883         '$1'=$reverse_out
884     '
885 }
886
887 # keeps the last occurence of each non-unique item
888 unique(){
889     unique_out=
890     eval unique_in=\$$1
891     reverse unique_in
892     for v in $unique_in; do
893         # " $unique_out" +space such that every item is surrounded with spaces
894         case " $unique_out" in *" $v "*) continue; esac  # already in list
895         unique_out="$unique_out$v "
896     done
897     reverse unique_out
898     eval $1=\$unique_out
899 }
900
901 resolve(){
902     resolve_out=
903     eval resolve_in=\$$1
904     for v in $resolve_in; do
905         eval 'resolve_out="$resolve_out$'$v' "'
906     done
907     eval $1=\$resolve_out
908 }
909
910 add_cppflags(){
911     append CPPFLAGS "$@"
912 }
913
914 add_cflags(){
915     append CFLAGS $($cflags_filter "$@")
916 }
917
918 add_cflags_headers(){
919     append CFLAGS_HEADERS $($cflags_filter "$@")
920 }
921
922 add_cxxflags(){
923     append CXXFLAGS $($cflags_filter "$@")
924 }
925
926 add_objcflags(){
927     append OBJCFLAGS $($objcflags_filter "$@")
928 }
929
930 add_asflags(){
931     append ASFLAGS $($asflags_filter "$@")
932 }
933
934 add_ldflags(){
935     append LDFLAGS $($ldflags_filter "$@")
936 }
937
938 add_ldexeflags(){
939     append LDEXEFLAGS $($ldflags_filter "$@")
940 }
941
942 add_ldsoflags(){
943     append LDSOFLAGS $($ldflags_filter "$@")
944 }
945
946 add_extralibs(){
947     prepend extralibs $($ldflags_filter "$@")
948 }
949
950 add_stripflags(){
951     append ASMSTRIPFLAGS "$@"
952 }
953
954 add_host_cppflags(){
955     append host_cppflags "$@"
956 }
957
958 add_host_cflags(){
959     append host_cflags $($host_cflags_filter "$@")
960 }
961
962 add_host_ldflags(){
963     append host_ldflags $($host_ldflags_filter "$@")
964 }
965
966 add_compat(){
967     append compat_objs $1
968     shift
969     map 'add_cppflags -D$v' "$@"
970 }
971
972 test_cmd(){
973     log "$@"
974     "$@" >> $logfile 2>&1
975 }
976
977 test_stat(){
978     log test_stat "$@"
979     stat "$1" >> $logfile 2>&1
980 }
981
982 cc_e(){
983     eval printf '%s\\n' $CC_E
984 }
985
986 cc_o(){
987     eval printf '%s\\n' $CC_O
988 }
989
990 as_o(){
991     eval printf '%s\\n' $AS_O
992 }
993
994 x86asm_o(){
995     eval printf '%s\\n' $X86ASM_O
996 }
997
998 ld_o(){
999     eval printf '%s\\n' $LD_O
1000 }
1001
1002 hostcc_e(){
1003     eval printf '%s\\n' $HOSTCC_E
1004 }
1005
1006 hostcc_o(){
1007     eval printf '%s\\n' $HOSTCC_O
1008 }
1009
1010 nvcc_o(){
1011     eval printf '%s\\n' $NVCC_O
1012 }
1013
1014 test_cc(){
1015     log test_cc "$@"
1016     cat > $TMPC
1017     log_file $TMPC
1018     test_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
1019 }
1020
1021 test_cxx(){
1022     log test_cxx "$@"
1023     cat > $TMPCPP
1024     log_file $TMPCPP
1025     test_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
1026 }
1027
1028 test_objcc(){
1029     log test_objcc "$@"
1030     cat > $TMPM
1031     log_file $TMPM
1032     test_cmd $objcc -Werror=missing-prototypes $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPM
1033 }
1034
1035 test_nvcc(){
1036     log test_nvcc "$@"
1037     cat > $TMPCU
1038     log_file $TMPCU
1039     tmpcu_=$TMPCU
1040     tmpo_=$TMPO
1041     [ -x "$(command -v cygpath)" ] && tmpcu_=$(cygpath -m $tmpcu_) && tmpo_=$(cygpath -m $tmpo_)
1042     test_cmd $nvcc $nvccflags "$@" $NVCC_C $(nvcc_o $tmpo_) $tmpcu_
1043 }
1044
1045 check_nvcc() {
1046     log check_nvcc "$@"
1047     name=$1
1048     shift 1
1049     disabled $name && return
1050     disable $name
1051     test_nvcc "$@" <<EOF && enable $name
1052 extern "C" {
1053     __global__ void hello(unsigned char *data) {}
1054 }
1055 EOF
1056 }
1057
1058 test_cpp(){
1059     log test_cpp "$@"
1060     cat > $TMPC
1061     log_file $TMPC
1062     test_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
1063 }
1064
1065 test_as(){
1066     log test_as "$@"
1067     cat > $TMPS
1068     log_file $TMPS
1069     test_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
1070 }
1071
1072 test_x86asm(){
1073     log test_x86asm "$@"
1074     echo "$1" > $TMPASM
1075     log_file $TMPASM
1076     shift
1077     test_cmd $x86asmexe $X86ASMFLAGS -Werror "$@" $(x86asm_o $TMPO) $TMPASM
1078 }
1079
1080 check_cmd(){
1081     log check_cmd "$@"
1082     cmd=$1
1083     disabled $cmd && return
1084     disable $cmd
1085     test_cmd $@ && enable $cmd
1086 }
1087
1088 check_as(){
1089     log check_as "$@"
1090     name=$1
1091     code=$2
1092     shift 2
1093     disable $name
1094     test_as $@ <<EOF && enable $name
1095 $code
1096 EOF
1097 }
1098
1099 check_inline_asm(){
1100     log check_inline_asm "$@"
1101     name="$1"
1102     code="$2"
1103     shift 2
1104     disable $name
1105     test_cc "$@" <<EOF && enable $name
1106 void foo(void){ __asm__ volatile($code); }
1107 EOF
1108 }
1109
1110 check_inline_asm_flags(){
1111     log check_inline_asm_flags "$@"
1112     name="$1"
1113     code="$2"
1114     flags=''
1115     shift 2
1116     while [ "$1" != "" ]; do
1117       append flags $1
1118       shift
1119     done;
1120     disable $name
1121     cat > $TMPC <<EOF
1122 void foo(void){ __asm__ volatile($code); }
1123 EOF
1124     log_file $TMPC
1125     test_cmd $cc $CPPFLAGS $CFLAGS $flags "$@" $CC_C $(cc_o $TMPO) $TMPC &&
1126     enable $name && add_cflags $flags && add_asflags $flags && add_ldflags $flags
1127 }
1128
1129 check_insn(){
1130     log check_insn "$@"
1131     check_inline_asm ${1}_inline "\"$2\""
1132     check_as ${1}_external "$2"
1133 }
1134
1135 check_x86asm(){
1136     log check_x86asm "$@"
1137     name=$1
1138     shift
1139     disable $name
1140     test_x86asm "$@" && enable $name
1141 }
1142
1143 test_ld(){
1144     log test_ld "$@"
1145     type=$1
1146     shift 1
1147     flags=$(filter_out '-l*|*.so' $@)
1148     libs=$(filter '-l*|*.so' $@)
1149     test_$type $($cflags_filter $flags) || return
1150     flags=$($ldflags_filter $flags)
1151     libs=$($ldflags_filter $libs)
1152     test_cmd $ld $LDFLAGS $LDEXEFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
1153 }
1154
1155 check_ld(){
1156     log check_ld "$@"
1157     type=$1
1158     name=$2
1159     shift 2
1160     disable $name
1161     test_ld $type $@ && enable $name
1162 }
1163
1164 print_include(){
1165     hdr=$1
1166     test "${hdr%.h}" = "${hdr}" &&
1167         echo "#include $hdr"    ||
1168         echo "#include <$hdr>"
1169 }
1170
1171 test_code(){
1172     log test_code "$@"
1173     check=$1
1174     headers=$2
1175     code=$3
1176     shift 3
1177     {
1178         for hdr in $headers; do
1179             print_include $hdr
1180         done
1181         echo "int main(void) { $code; return 0; }"
1182     } | test_$check "$@"
1183 }
1184
1185 check_cppflags(){
1186     log check_cppflags "$@"
1187     test_cpp "$@" <<EOF && append CPPFLAGS "$@"
1188 #include <stdlib.h>
1189 EOF
1190 }
1191
1192 test_cflags(){
1193     log test_cflags "$@"
1194     set -- $($cflags_filter "$@")
1195     test_cc "$@" <<EOF
1196 int x;
1197 EOF
1198 }
1199
1200 check_cflags(){
1201     log check_cflags "$@"
1202     test_cflags "$@" && add_cflags "$@"
1203 }
1204
1205 check_cxxflags(){
1206     log check_cxxflags "$@"
1207     set -- $($cflags_filter "$@")
1208     test_cxx "$@" <<EOF && append CXXFLAGS "$@"
1209 int x;
1210 EOF
1211 }
1212
1213 test_objcflags(){
1214     log test_objcflags "$@"
1215     set -- $($objcflags_filter "$@")
1216     test_objcc "$@" <<EOF
1217 int x;
1218 EOF
1219 }
1220
1221 check_objcflags(){
1222     log check_objcflags "$@"
1223     test_objcflags "$@" && add_objcflags "$@"
1224 }
1225
1226 test_ldflags(){
1227     log test_ldflags "$@"
1228     set -- $($ldflags_filter "$@")
1229     test_ld "cc" "$@" <<EOF
1230 int main(void){ return 0; }
1231 EOF
1232 }
1233
1234 check_ldflags(){
1235     log check_ldflags "$@"
1236     test_ldflags "$@" && add_ldflags "$@"
1237 }
1238
1239 test_stripflags(){
1240     log test_stripflags "$@"
1241     # call test_cc to get a fresh TMPO
1242     test_cc <<EOF
1243 int main(void) { return 0; }
1244 EOF
1245     test_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
1246 }
1247
1248 check_stripflags(){
1249     log check_stripflags "$@"
1250     test_stripflags "$@" && add_stripflags "$@"
1251 }
1252
1253 check_headers(){
1254     log check_headers "$@"
1255     headers=$1
1256     shift
1257     disable_sanitized $headers
1258     {
1259         for hdr in $headers; do
1260             print_include $hdr
1261         done
1262         echo "int x;"
1263     } | test_cpp "$@" && enable_sanitized $headers
1264 }
1265
1266 check_header_objcc(){
1267     log check_header_objcc "$@"
1268     rm -f -- "$TMPO"
1269     header=$1
1270     shift
1271     disable_sanitized $header
1272     {
1273        echo "#include <$header>"
1274        echo "int main(void) { return 0; }"
1275     } | test_objcc && test_stat "$TMPO" && enable_sanitized $header
1276 }
1277
1278 check_apple_framework(){
1279     log check_apple_framework "$@"
1280     framework="$1"
1281     name="$(tolower $framework)"
1282     header="${framework}/${framework}.h"
1283     disable $name
1284     check_header_objcc $header &&
1285         enable $name && eval ${name}_extralibs='"-framework $framework"'
1286 }
1287
1288 check_func(){
1289     log check_func "$@"
1290     func=$1
1291     shift
1292     disable $func
1293     test_ld "cc" "$@" <<EOF && enable $func
1294 extern int $func();
1295 int main(void){ $func(); }
1296 EOF
1297 }
1298
1299 check_complexfunc(){
1300     log check_complexfunc "$@"
1301     func=$1
1302     narg=$2
1303     shift 2
1304     test $narg = 2 && args="f, g" || args="f * I"
1305     disable $func
1306     test_ld "cc" "$@" <<EOF && enable $func
1307 #include <complex.h>
1308 #include <math.h>
1309 float foo(complex float f, complex float g) { return $func($args); }
1310 int main(void){ return (int) foo; }
1311 EOF
1312 }
1313
1314 check_mathfunc(){
1315     log check_mathfunc "$@"
1316     func=$1
1317     narg=$2
1318     shift 2
1319     test $narg = 2 && args="f, g" || args="f"
1320     disable $func
1321     test_ld "cc" "$@" <<EOF && enable $func
1322 #include <math.h>
1323 float foo(float f, float g) { return $func($args); }
1324 int main(void){ return (int) foo; }
1325 EOF
1326 }
1327
1328 check_func_headers(){
1329     log check_func_headers "$@"
1330     headers=$1
1331     funcs=$2
1332     shift 2
1333     {
1334         for hdr in $headers; do
1335             print_include $hdr
1336         done
1337         echo "#include <stdint.h>"
1338         for func in $funcs; do
1339             echo "long check_$func(void) { return (long) $func; }"
1340         done
1341         echo "int main(void) { int ret = 0;"
1342         # LTO could optimize out the test functions without this
1343         for func in $funcs; do
1344             echo " ret |= ((intptr_t)check_$func) & 0xFFFF;"
1345         done
1346         echo "return ret; }"
1347     } | test_ld "cc" "$@" && enable $funcs && enable_sanitized $headers
1348 }
1349
1350 check_class_headers_cpp(){
1351     log check_class_headers_cpp "$@"
1352     headers=$1
1353     classes=$2
1354     shift 2
1355     {
1356         for hdr in $headers; do
1357             echo "#include <$hdr>"
1358         done
1359         echo "int main(void) { "
1360         i=1
1361         for class in $classes; do
1362             echo "$class obj$i;"
1363             i=$(expr $i + 1)
1364         done
1365         echo "return 0; }"
1366     } | test_ld "cxx" "$@" && enable $funcs && enable_sanitized $headers
1367 }
1368
1369 test_cpp_condition(){
1370     log test_cpp_condition "$@"
1371     header=$1
1372     condition=$2
1373     shift 2
1374     test_cpp "$@" <<EOF
1375 #include <$header>
1376 #if !($condition)
1377 #error "unsatisfied condition: $condition"
1378 #endif
1379 EOF
1380 }
1381
1382 check_cpp_condition(){
1383     log check_cpp_condition "$@"
1384     name=$1
1385     shift 1
1386     disable $name
1387     test_cpp_condition "$@" && enable $name
1388 }
1389
1390 test_cflags_cc(){
1391     log test_cflags_cc "$@"
1392     flags=$1
1393     header=$2
1394     condition=$3
1395     shift 3
1396     set -- $($cflags_filter "$flags")
1397     test_cc "$@" <<EOF
1398 #include <$header>
1399 #if !($condition)
1400 #error "unsatisfied condition: $condition"
1401 #endif
1402 EOF
1403 }
1404
1405 check_lib(){
1406     log check_lib "$@"
1407     name="$1"
1408     headers="$2"
1409     funcs="$3"
1410     shift 3
1411     disable $name
1412     check_func_headers "$headers" "$funcs" "$@" &&
1413         enable $name && eval ${name}_extralibs="\$@"
1414 }
1415
1416 check_lib_cpp(){
1417     log check_lib_cpp "$@"
1418     name="$1"
1419     headers="$2"
1420     classes="$3"
1421     shift 3
1422     disable $name
1423     check_class_headers_cpp "$headers" "$classes" "$@" &&
1424         enable $name && eval ${name}_extralibs="\$@"
1425 }
1426
1427 test_pkg_config(){
1428     log test_pkg_config "$@"
1429     name="$1"
1430     pkg_version="$2"
1431     pkg="${2%% *}"
1432     headers="$3"
1433     funcs="$4"
1434     shift 4
1435     disable $name
1436     test_cmd $pkg_config --exists --print-errors $pkg_version || return
1437     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1438     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1439     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1440         enable $name &&
1441         set_sanitized "${name}_cflags"    $pkg_cflags &&
1442         set_sanitized "${name}_extralibs" $pkg_libs
1443 }
1444
1445 check_pkg_config(){
1446     log check_pkg_config "$@"
1447     name="$1"
1448     test_pkg_config "$@" &&
1449         eval add_cflags \$${name}_cflags
1450 }
1451
1452 test_exec(){
1453     test_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1454 }
1455
1456 check_exec_crash(){
1457     log check_exec_crash "$@"
1458     code=$(cat)
1459
1460     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1461     # are safe but may not be available everywhere.  Thus we use
1462     # raise(SIGTERM) instead.  The check is run in a subshell so we
1463     # can redirect the "Terminated" message from the shell.  SIGBUS
1464     # is not defined by standard C so it is used conditionally.
1465
1466     (test_exec "$@") >> $logfile 2>&1 <<EOF
1467 #include <signal.h>
1468 static void sighandler(int sig){
1469     raise(SIGTERM);
1470 }
1471 int foo(void){
1472     $code
1473 }
1474 int (*func_ptr)(void) = foo;
1475 int main(void){
1476     signal(SIGILL, sighandler);
1477     signal(SIGFPE, sighandler);
1478     signal(SIGSEGV, sighandler);
1479 #ifdef SIGBUS
1480     signal(SIGBUS, sighandler);
1481 #endif
1482     return func_ptr();
1483 }
1484 EOF
1485 }
1486
1487 check_type(){
1488     log check_type "$@"
1489     headers=$1
1490     type=$2
1491     shift 2
1492     disable_sanitized "$type"
1493     test_code cc "$headers" "$type v" "$@" && enable_sanitized "$type"
1494 }
1495
1496 check_struct(){
1497     log check_struct "$@"
1498     headers=$1
1499     struct=$2
1500     member=$3
1501     shift 3
1502     disable_sanitized "${struct}_${member}"
1503     test_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1504         enable_sanitized "${struct}_${member}"
1505 }
1506
1507 check_builtin(){
1508     log check_builtin "$@"
1509     name=$1
1510     headers=$2
1511     builtin=$3
1512     shift 3
1513     disable "$name"
1514     test_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1515 }
1516
1517 check_compile_assert(){
1518     log check_compile_assert "$@"
1519     name=$1
1520     headers=$2
1521     condition=$3
1522     shift 3
1523     disable "$name"
1524     test_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1525 }
1526
1527 check_cc(){
1528     log check_cc "$@"
1529     name=$1
1530     shift
1531     disable "$name"
1532     test_code cc "$@" && enable "$name"
1533 }
1534
1535 require(){
1536     log require "$@"
1537     name_version="$1"
1538     name="${1%% *}"
1539     shift
1540     check_lib $name "$@" || die "ERROR: $name_version not found"
1541 }
1542
1543 require_cc(){
1544     log require_cc "$@"
1545     name="$1"
1546     check_cc "$@" || die "ERROR: $name failed"
1547 }
1548
1549 require_cpp(){
1550     name="$1"
1551     headers="$2"
1552     classes="$3"
1553     shift 3
1554     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1555 }
1556
1557 require_headers(){
1558     log require_headers "$@"
1559     headers="$1"
1560     check_headers "$@" || die "ERROR: $headers not found"
1561 }
1562
1563 require_cpp_condition(){
1564     log require_cpp_condition "$@"
1565     condition="$3"
1566     check_cpp_condition "$@" || die "ERROR: $condition not satisfied"
1567 }
1568
1569 require_pkg_config(){
1570     log require_pkg_config "$@"
1571     pkg_version="$2"
1572     check_pkg_config "$@" || die "ERROR: $pkg_version not found using pkg-config$pkg_config_fail_message"
1573 }
1574
1575 test_host_cc(){
1576     log test_host_cc "$@"
1577     cat > $TMPC
1578     log_file $TMPC
1579     test_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1580 }
1581
1582 test_host_cpp(){
1583     log test_host_cpp "$@"
1584     cat > $TMPC
1585     log_file $TMPC
1586     test_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1587 }
1588
1589 check_host_cppflags(){
1590     log check_host_cppflags "$@"
1591     test_host_cpp "$@" <<EOF && append host_cppflags "$@"
1592 #include <stdlib.h>
1593 EOF
1594 }
1595
1596 check_host_cflags(){
1597     log check_host_cflags "$@"
1598     set -- $($host_cflags_filter "$@")
1599     test_host_cc "$@" <<EOF && append host_cflags "$@"
1600 int x;
1601 EOF
1602 }
1603
1604 test_host_cpp_condition(){
1605     log test_host_cpp_condition "$@"
1606     header=$1
1607     condition=$2
1608     shift 2
1609     test_host_cpp "$@" <<EOF
1610 #include <$header>
1611 #if !($condition)
1612 #error "unsatisfied condition: $condition"
1613 #endif
1614 EOF
1615 }
1616
1617 check_host_cpp_condition(){
1618     log check_host_cpp_condition "$@"
1619     name=$1
1620     shift 1
1621     disable $name
1622     test_host_cpp_condition "$@" && enable $name
1623 }
1624
1625 cp_if_changed(){
1626     cmp -s "$1" "$2" && { test "$quiet" != "yes" && echo "$2 is unchanged"; } && return
1627     mkdir -p "$(dirname $2)"
1628     cp -f "$1" "$2"
1629 }
1630
1631 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1632 # system-dependent things.
1633
1634 AVCODEC_COMPONENTS="
1635     bsfs
1636     decoders
1637     encoders
1638     hwaccels
1639     parsers
1640 "
1641
1642 AVDEVICE_COMPONENTS="
1643     indevs
1644     outdevs
1645 "
1646
1647 AVFILTER_COMPONENTS="
1648     filters
1649 "
1650
1651 AVFORMAT_COMPONENTS="
1652     demuxers
1653     muxers
1654     protocols
1655 "
1656
1657 COMPONENT_LIST="
1658     $AVCODEC_COMPONENTS
1659     $AVDEVICE_COMPONENTS
1660     $AVFILTER_COMPONENTS
1661     $AVFORMAT_COMPONENTS
1662 "
1663
1664 EXAMPLE_LIST="
1665     avio_dir_cmd_example
1666     avio_reading_example
1667     decode_audio_example
1668     decode_video_example
1669     demuxing_decoding_example
1670     encode_audio_example
1671     encode_video_example
1672     extract_mvs_example
1673     filter_audio_example
1674     filtering_audio_example
1675     filtering_video_example
1676     http_multiclient_example
1677     hw_decode_example
1678     metadata_example
1679     muxing_example
1680     qsvdec_example
1681     remuxing_example
1682     resampling_audio_example
1683     scaling_video_example
1684     transcode_aac_example
1685     transcoding_example
1686     vaapi_encode_example
1687     vaapi_transcode_example
1688 "
1689
1690 EXTERNAL_AUTODETECT_LIBRARY_LIST="
1691     alsa
1692     appkit
1693     avfoundation
1694     bzlib
1695     coreimage
1696     iconv
1697     libxcb
1698     libxcb_shm
1699     libxcb_shape
1700     libxcb_xfixes
1701     lzma
1702     schannel
1703     sdl2
1704     securetransport
1705     sndio
1706     xlib
1707     zlib
1708 "
1709
1710 EXTERNAL_LIBRARY_GPL_LIST="
1711     avisynth
1712     frei0r
1713     libcdio
1714     libdavs2
1715     librubberband
1716     libvidstab
1717     libx264
1718     libx265
1719     libxavs
1720     libxavs2
1721     libxvid
1722 "
1723
1724 EXTERNAL_LIBRARY_NONFREE_LIST="
1725     decklink
1726     libfdk_aac
1727     openssl
1728     libtls
1729 "
1730
1731 EXTERNAL_LIBRARY_VERSION3_LIST="
1732     gmp
1733     libaribb24
1734     liblensfun
1735     libopencore_amrnb
1736     libopencore_amrwb
1737     libvmaf
1738     libvo_amrwbenc
1739     mbedtls
1740     rkmpp
1741 "
1742
1743 EXTERNAL_LIBRARY_GPLV3_LIST="
1744     libsmbclient
1745 "
1746
1747 EXTERNAL_LIBRARY_LIST="
1748     $EXTERNAL_LIBRARY_GPL_LIST
1749     $EXTERNAL_LIBRARY_NONFREE_LIST
1750     $EXTERNAL_LIBRARY_VERSION3_LIST
1751     $EXTERNAL_LIBRARY_GPLV3_LIST
1752     chromaprint
1753     gcrypt
1754     gnutls
1755     jni
1756     ladspa
1757     libaom
1758     libass
1759     libbluray
1760     libbs2b
1761     libcaca
1762     libcelt
1763     libcodec2
1764     libdav1d
1765     libdc1394
1766     libdrm
1767     libflite
1768     libfontconfig
1769     libfreetype
1770     libfribidi
1771     libgme
1772     libgsm
1773     libiec61883
1774     libilbc
1775     libjack
1776     libklvanc
1777     libkvazaar
1778     libmodplug
1779     libmp3lame
1780     libmysofa
1781     libopencv
1782     libopenh264
1783     libopenjpeg
1784     libopenmpt
1785     libopus
1786     libpulse
1787     librsvg
1788     librtmp
1789     libshine
1790     libsmbclient
1791     libsnappy
1792     libsoxr
1793     libspeex
1794     libsrt
1795     libssh
1796     libtensorflow
1797     libtesseract
1798     libtheora
1799     libtwolame
1800     libv4l2
1801     libvorbis
1802     libvpx
1803     libwavpack
1804     libwebp
1805     libxml2
1806     libzimg
1807     libzmq
1808     libzvbi
1809     lv2
1810     mediacodec
1811     openal
1812     opengl
1813     pocketsphinx
1814     vapoursynth
1815 "
1816
1817 HWACCEL_AUTODETECT_LIBRARY_LIST="
1818     amf
1819     audiotoolbox
1820     crystalhd
1821     cuda
1822     cuda_llvm
1823     cuvid
1824     d3d11va
1825     dxva2
1826     ffnvcodec
1827     nvdec
1828     nvenc
1829     vaapi
1830     vdpau
1831     videotoolbox
1832     v4l2_m2m
1833     xvmc
1834 "
1835
1836 # catchall list of things that require external libs to link
1837 EXTRALIBS_LIST="
1838     cpu_init
1839     cws2fws
1840 "
1841
1842 HWACCEL_LIBRARY_NONFREE_LIST="
1843     cuda_nvcc
1844     cuda_sdk
1845     libnpp
1846 "
1847
1848 HWACCEL_LIBRARY_LIST="
1849     $HWACCEL_LIBRARY_NONFREE_LIST
1850     libmfx
1851     mmal
1852     omx
1853     opencl
1854 "
1855
1856 DOCUMENT_LIST="
1857     doc
1858     htmlpages
1859     manpages
1860     podpages
1861     txtpages
1862 "
1863
1864 FEATURE_LIST="
1865     ftrapv
1866     gray
1867     hardcoded_tables
1868     omx_rpi
1869     runtime_cpudetect
1870     safe_bitstream_reader
1871     shared
1872     small
1873     static
1874     swscale_alpha
1875 "
1876
1877 # this list should be kept in linking order
1878 LIBRARY_LIST="
1879     avdevice
1880     avfilter
1881     swscale
1882     postproc
1883     avformat
1884     avcodec
1885     swresample
1886     avresample
1887     avutil
1888 "
1889
1890 LICENSE_LIST="
1891     gpl
1892     nonfree
1893     version3
1894 "
1895
1896 PROGRAM_LIST="
1897     ffplay
1898     ffprobe
1899     ffmpeg
1900 "
1901
1902 SUBSYSTEM_LIST="
1903     dct
1904     dwt
1905     error_resilience
1906     faan
1907     fast_unaligned
1908     fft
1909     lsp
1910     lzo
1911     mdct
1912     pixelutils
1913     network
1914     rdft
1915 "
1916
1917 # COMPONENT_LIST needs to come last to ensure correct dependency checking
1918 CONFIG_LIST="
1919     $DOCUMENT_LIST
1920     $EXAMPLE_LIST
1921     $EXTERNAL_LIBRARY_LIST
1922     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1923     $HWACCEL_LIBRARY_LIST
1924     $HWACCEL_AUTODETECT_LIBRARY_LIST
1925     $FEATURE_LIST
1926     $LICENSE_LIST
1927     $LIBRARY_LIST
1928     $PROGRAM_LIST
1929     $SUBSYSTEM_LIST
1930     autodetect
1931     fontconfig
1932     linux_perf
1933     memory_poisoning
1934     neon_clobber_test
1935     ossfuzz
1936     pic
1937     thumb
1938     valgrind_backtrace
1939     xmm_clobber_test
1940     $COMPONENT_LIST
1941 "
1942
1943 THREADS_LIST="
1944     pthreads
1945     os2threads
1946     w32threads
1947 "
1948
1949 ATOMICS_LIST="
1950     atomics_gcc
1951     atomics_suncc
1952     atomics_win32
1953 "
1954
1955 AUTODETECT_LIBS="
1956     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1957     $HWACCEL_AUTODETECT_LIBRARY_LIST
1958     $THREADS_LIST
1959 "
1960
1961 ARCH_LIST="
1962     aarch64
1963     alpha
1964     arm
1965     avr32
1966     avr32_ap
1967     avr32_uc
1968     bfin
1969     ia64
1970     m68k
1971     mips
1972     mips64
1973     parisc
1974     ppc
1975     ppc64
1976     s390
1977     sh4
1978     sparc
1979     sparc64
1980     tilegx
1981     tilepro
1982     tomi
1983     x86
1984     x86_32
1985     x86_64
1986 "
1987
1988 ARCH_EXT_LIST_ARM="
1989     armv5te
1990     armv6
1991     armv6t2
1992     armv8
1993     neon
1994     vfp
1995     vfpv3
1996     setend
1997 "
1998
1999 ARCH_EXT_LIST_MIPS="
2000     mipsfpu
2001     mips32r2
2002     mips32r5
2003     mips64r2
2004     mips32r6
2005     mips64r6
2006     mipsdsp
2007     mipsdspr2
2008     msa
2009     msa2
2010 "
2011
2012 ARCH_EXT_LIST_LOONGSON="
2013     loongson2
2014     loongson3
2015     mmi
2016 "
2017
2018 ARCH_EXT_LIST_X86_SIMD="
2019     aesni
2020     amd3dnow
2021     amd3dnowext
2022     avx
2023     avx2
2024     avx512
2025     fma3
2026     fma4
2027     mmx
2028     mmxext
2029     sse
2030     sse2
2031     sse3
2032     sse4
2033     sse42
2034     ssse3
2035     xop
2036 "
2037
2038 ARCH_EXT_LIST_PPC="
2039     altivec
2040     dcbzl
2041     ldbrx
2042     power8
2043     ppc4xx
2044     vsx
2045 "
2046
2047 ARCH_EXT_LIST_X86="
2048     $ARCH_EXT_LIST_X86_SIMD
2049     cpunop
2050     i686
2051 "
2052
2053 ARCH_EXT_LIST="
2054     $ARCH_EXT_LIST_ARM
2055     $ARCH_EXT_LIST_PPC
2056     $ARCH_EXT_LIST_X86
2057     $ARCH_EXT_LIST_MIPS
2058     $ARCH_EXT_LIST_LOONGSON
2059 "
2060
2061 ARCH_FEATURES="
2062     aligned_stack
2063     fast_64bit
2064     fast_clz
2065     fast_cmov
2066     local_aligned
2067     simd_align_16
2068     simd_align_32
2069     simd_align_64
2070 "
2071
2072 BUILTIN_LIST="
2073     atomic_cas_ptr
2074     machine_rw_barrier
2075     MemoryBarrier
2076     mm_empty
2077     rdtsc
2078     sem_timedwait
2079     sync_val_compare_and_swap
2080 "
2081 HAVE_LIST_CMDLINE="
2082     inline_asm
2083     symver
2084     x86asm
2085 "
2086
2087 HAVE_LIST_PUB="
2088     bigendian
2089     fast_unaligned
2090 "
2091
2092 HEADERS_LIST="
2093     arpa_inet_h
2094     asm_types_h
2095     cdio_paranoia_h
2096     cdio_paranoia_paranoia_h
2097     cuda_h
2098     dispatch_dispatch_h
2099     dev_bktr_ioctl_bt848_h
2100     dev_bktr_ioctl_meteor_h
2101     dev_ic_bt8xx_h
2102     dev_video_bktr_ioctl_bt848_h
2103     dev_video_meteor_ioctl_meteor_h
2104     direct_h
2105     dirent_h
2106     dxgidebug_h
2107     dxva_h
2108     ES2_gl_h
2109     gsm_h
2110     io_h
2111     linux_perf_event_h
2112     machine_ioctl_bt848_h
2113     machine_ioctl_meteor_h
2114     malloc_h
2115     opencv2_core_core_c_h
2116     OpenGL_gl3_h
2117     poll_h
2118     sys_param_h
2119     sys_resource_h
2120     sys_select_h
2121     sys_soundcard_h
2122     sys_time_h
2123     sys_un_h
2124     sys_videoio_h
2125     termios_h
2126     udplite_h
2127     unistd_h
2128     valgrind_valgrind_h
2129     windows_h
2130     winsock2_h
2131 "
2132
2133 INTRINSICS_LIST="
2134     intrinsics_neon
2135 "
2136
2137 COMPLEX_FUNCS="
2138     cabs
2139     cexp
2140 "
2141
2142 MATH_FUNCS="
2143     atanf
2144     atan2f
2145     cbrt
2146     cbrtf
2147     copysign
2148     cosf
2149     erf
2150     exp2
2151     exp2f
2152     expf
2153     hypot
2154     isfinite
2155     isinf
2156     isnan
2157     ldexpf
2158     llrint
2159     llrintf
2160     log2
2161     log2f
2162     log10f
2163     lrint
2164     lrintf
2165     powf
2166     rint
2167     round
2168     roundf
2169     sinf
2170     trunc
2171     truncf
2172 "
2173
2174 SYSTEM_FEATURES="
2175     dos_paths
2176     libc_msvcrt
2177     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
2178     section_data_rel_ro
2179     threads
2180     uwp
2181     winrt
2182 "
2183
2184 SYSTEM_FUNCS="
2185     access
2186     aligned_malloc
2187     arc4random
2188     clock_gettime
2189     closesocket
2190     CommandLineToArgvW
2191     fcntl
2192     getaddrinfo
2193     gethrtime
2194     getopt
2195     GetProcessAffinityMask
2196     GetProcessMemoryInfo
2197     GetProcessTimes
2198     getrusage
2199     GetSystemTimeAsFileTime
2200     gettimeofday
2201     glob
2202     glXGetProcAddress
2203     gmtime_r
2204     inet_aton
2205     isatty
2206     kbhit
2207     localtime_r
2208     lstat
2209     lzo1x_999_compress
2210     mach_absolute_time
2211     MapViewOfFile
2212     memalign
2213     mkstemp
2214     mmap
2215     mprotect
2216     nanosleep
2217     PeekNamedPipe
2218     posix_memalign
2219     pthread_cancel
2220     sched_getaffinity
2221     SecItemImport
2222     SetConsoleTextAttribute
2223     SetConsoleCtrlHandler
2224     setmode
2225     setrlimit
2226     Sleep
2227     strerror_r
2228     sysconf
2229     sysctl
2230     usleep
2231     UTGetOSTypeFromString
2232     VirtualAlloc
2233     wglGetProcAddress
2234 "
2235
2236 SYSTEM_LIBRARIES="
2237     bcrypt
2238     vaapi_drm
2239     vaapi_x11
2240     vdpau_x11
2241 "
2242
2243 TOOLCHAIN_FEATURES="
2244     as_arch_directive
2245     as_dn_directive
2246     as_fpu_directive
2247     as_func
2248     as_object_arch
2249     asm_mod_q
2250     blocks_extension
2251     ebp_available
2252     ebx_available
2253     gnu_as
2254     gnu_windres
2255     ibm_asm
2256     inline_asm_direct_symbol_refs
2257     inline_asm_labels
2258     inline_asm_nonlocal_labels
2259     pragma_deprecated
2260     rsync_contimeout
2261     symver_asm_label
2262     symver_gnu_asm
2263     vfp_args
2264     xform_asm
2265     xmm_clobbers
2266 "
2267
2268 TYPES_LIST="
2269     kCMVideoCodecType_HEVC
2270     kCVPixelFormatType_420YpCbCr10BiPlanarVideoRange
2271     socklen_t
2272     struct_addrinfo
2273     struct_group_source_req
2274     struct_ip_mreq_source
2275     struct_ipv6_mreq
2276     struct_msghdr_msg_flags
2277     struct_pollfd
2278     struct_rusage_ru_maxrss
2279     struct_sctp_event_subscribe
2280     struct_sockaddr_in6
2281     struct_sockaddr_sa_len
2282     struct_sockaddr_storage
2283     struct_stat_st_mtim_tv_nsec
2284     struct_v4l2_frmivalenum_discrete
2285 "
2286
2287 HAVE_LIST="
2288     $ARCH_EXT_LIST
2289     $(add_suffix _external $ARCH_EXT_LIST)
2290     $(add_suffix _inline   $ARCH_EXT_LIST)
2291     $ARCH_FEATURES
2292     $BUILTIN_LIST
2293     $COMPLEX_FUNCS
2294     $HAVE_LIST_CMDLINE
2295     $HAVE_LIST_PUB
2296     $HEADERS_LIST
2297     $INTRINSICS_LIST
2298     $MATH_FUNCS
2299     $SYSTEM_FEATURES
2300     $SYSTEM_FUNCS
2301     $SYSTEM_LIBRARIES
2302     $THREADS_LIST
2303     $TOOLCHAIN_FEATURES
2304     $TYPES_LIST
2305     makeinfo
2306     makeinfo_html
2307     opencl_d3d11
2308     opencl_drm_arm
2309     opencl_drm_beignet
2310     opencl_dxva2
2311     opencl_vaapi_beignet
2312     opencl_vaapi_intel_media
2313     perl
2314     pod2man
2315     texi2html
2316 "
2317
2318 # options emitted with CONFIG_ prefix but not available on the command line
2319 CONFIG_EXTRA="
2320     aandcttables
2321     ac3dsp
2322     adts_header
2323     audio_frame_queue
2324     audiodsp
2325     blockdsp
2326     bswapdsp
2327     cabac
2328     cbs
2329     cbs_av1
2330     cbs_h264
2331     cbs_h265
2332     cbs_jpeg
2333     cbs_mpeg2
2334     cbs_vp9
2335     dirac_parse
2336     dnn
2337     dvprofile
2338     exif
2339     faandct
2340     faanidct
2341     fdctdsp
2342     flacdsp
2343     fmtconvert
2344     frame_thread_encoder
2345     g722dsp
2346     golomb
2347     gplv3
2348     h263dsp
2349     h264chroma
2350     h264dsp
2351     h264parse
2352     h264pred
2353     h264qpel
2354     hevcparse
2355     hpeldsp
2356     huffman
2357     huffyuvdsp
2358     huffyuvencdsp
2359     idctdsp
2360     iirfilter
2361     mdct15
2362     intrax8
2363     iso_media
2364     ividsp
2365     jpegtables
2366     lgplv3
2367     libx262
2368     llauddsp
2369     llviddsp
2370     llvidencdsp
2371     lpc
2372     lzf
2373     me_cmp
2374     mpeg_er
2375     mpegaudio
2376     mpegaudiodsp
2377     mpegaudioheader
2378     mpegvideo
2379     mpegvideoenc
2380     mss34dsp
2381     pixblockdsp
2382     qpeldsp
2383     qsv
2384     qsvdec
2385     qsvenc
2386     qsvvpp
2387     rangecoder
2388     riffdec
2389     riffenc
2390     rtpdec
2391     rtpenc_chain
2392     rv34dsp
2393     scene_sad
2394     sinewin
2395     snappy
2396     srtp
2397     startcode
2398     texturedsp
2399     texturedspenc
2400     tpeldsp
2401     vaapi_1
2402     vaapi_encode
2403     vc1dsp
2404     videodsp
2405     vp3dsp
2406     vp56dsp
2407     vp8dsp
2408     wma_freqs
2409     wmv2dsp
2410 "
2411
2412 CMDLINE_SELECT="
2413     $ARCH_EXT_LIST
2414     $CONFIG_LIST
2415     $HAVE_LIST_CMDLINE
2416     $THREADS_LIST
2417     asm
2418     cross_compile
2419     debug
2420     extra_warnings
2421     logging
2422     lto
2423     optimizations
2424     rpath
2425     stripping
2426 "
2427
2428 PATHS_LIST="
2429     bindir
2430     datadir
2431     docdir
2432     incdir
2433     libdir
2434     mandir
2435     pkgconfigdir
2436     prefix
2437     shlibdir
2438     install_name_dir
2439 "
2440
2441 CMDLINE_SET="
2442     $PATHS_LIST
2443     ar
2444     arch
2445     as
2446     assert_level
2447     build_suffix
2448     cc
2449     objcc
2450     cpu
2451     cross_prefix
2452     custom_allocator
2453     cxx
2454     dep_cc
2455     doxygen
2456     env
2457     extra_version
2458     gas
2459     host_cc
2460     host_cflags
2461     host_extralibs
2462     host_ld
2463     host_ldflags
2464     host_os
2465     ignore_tests
2466     install
2467     ld
2468     ln_s
2469     logfile
2470     malloc_prefix
2471     nm
2472     optflags
2473     nvcc
2474     nvccflags
2475     pkg_config
2476     pkg_config_flags
2477     progs_suffix
2478     random_seed
2479     ranlib
2480     samples
2481     strip
2482     sws_max_filter_size
2483     sysinclude
2484     sysroot
2485     target_exec
2486     target_os
2487     target_path
2488     target_samples
2489     tempprefix
2490     toolchain
2491     valgrind
2492     windres
2493     x86asmexe
2494 "
2495
2496 CMDLINE_APPEND="
2497     extra_cflags
2498     extra_cxxflags
2499     extra_objcflags
2500     host_cppflags
2501 "
2502
2503 # code dependency declarations
2504
2505 # architecture extensions
2506
2507 armv5te_deps="arm"
2508 armv6_deps="arm"
2509 armv6t2_deps="arm"
2510 armv8_deps="aarch64"
2511 neon_deps_any="aarch64 arm"
2512 intrinsics_neon_deps="neon"
2513 vfp_deps_any="aarch64 arm"
2514 vfpv3_deps="vfp"
2515 setend_deps="arm"
2516
2517 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2518
2519 altivec_deps="ppc"
2520 dcbzl_deps="ppc"
2521 ldbrx_deps="ppc"
2522 ppc4xx_deps="ppc"
2523 vsx_deps="altivec"
2524 power8_deps="vsx"
2525
2526 loongson2_deps="mips"
2527 loongson3_deps="mips"
2528 mips32r2_deps="mips"
2529 mips32r5_deps="mips"
2530 mips32r6_deps="mips"
2531 mips64r2_deps="mips"
2532 mips64r6_deps="mips"
2533 mipsfpu_deps="mips"
2534 mipsdsp_deps="mips"
2535 mipsdspr2_deps="mips"
2536 mmi_deps="mips"
2537 msa_deps="mipsfpu"
2538 msa2_deps="msa"
2539
2540 cpunop_deps="i686"
2541 x86_64_select="i686"
2542 x86_64_suggest="fast_cmov"
2543
2544 amd3dnow_deps="mmx"
2545 amd3dnowext_deps="amd3dnow"
2546 i686_deps="x86"
2547 mmx_deps="x86"
2548 mmxext_deps="mmx"
2549 sse_deps="mmxext"
2550 sse2_deps="sse"
2551 sse3_deps="sse2"
2552 ssse3_deps="sse3"
2553 sse4_deps="ssse3"
2554 sse42_deps="sse4"
2555 aesni_deps="sse42"
2556 avx_deps="sse42"
2557 xop_deps="avx"
2558 fma3_deps="avx"
2559 fma4_deps="avx"
2560 avx2_deps="avx"
2561 avx512_deps="avx2"
2562
2563 mmx_external_deps="x86asm"
2564 mmx_inline_deps="inline_asm x86"
2565 mmx_suggest="mmx_external mmx_inline"
2566
2567 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2568     eval dep=\$${ext}_deps
2569     eval ${ext}_external_deps='"${dep}_external"'
2570     eval ${ext}_inline_deps='"${dep}_inline"'
2571     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2572 done
2573
2574 aligned_stack_if_any="aarch64 ppc x86"
2575 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2576 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2577 fast_unaligned_if_any="aarch64 ppc x86"
2578 simd_align_16_if_any="altivec neon sse"
2579 simd_align_32_if_any="avx"
2580 simd_align_64_if_any="avx512"
2581
2582 # system capabilities
2583 linux_perf_deps="linux_perf_event_h"
2584 symver_if_any="symver_asm_label symver_gnu_asm"
2585 valgrind_backtrace_conflict="optimizations"
2586 valgrind_backtrace_deps="valgrind_valgrind_h"
2587
2588 # threading support
2589 atomics_gcc_if="sync_val_compare_and_swap"
2590 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2591 atomics_win32_if="MemoryBarrier"
2592 atomics_native_if_any="$ATOMICS_LIST"
2593 w32threads_deps="atomics_native"
2594 threads_if_any="$THREADS_LIST"
2595
2596 # subsystems
2597 cbs_av1_select="cbs"
2598 cbs_h264_select="cbs"
2599 cbs_h265_select="cbs"
2600 cbs_jpeg_select="cbs"
2601 cbs_mpeg2_select="cbs"
2602 cbs_vp9_select="cbs"
2603 dct_select="rdft"
2604 dirac_parse_select="golomb"
2605 dnn_suggest="libtensorflow"
2606 error_resilience_select="me_cmp"
2607 faandct_deps="faan"
2608 faandct_select="fdctdsp"
2609 faanidct_deps="faan"
2610 faanidct_select="idctdsp"
2611 h264dsp_select="startcode"
2612 hevcparse_select="golomb"
2613 frame_thread_encoder_deps="encoders threads"
2614 intrax8_select="blockdsp idctdsp"
2615 mdct_select="fft"
2616 mdct15_select="fft"
2617 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2618 mpeg_er_select="error_resilience"
2619 mpegaudio_select="mpegaudiodsp mpegaudioheader"
2620 mpegaudiodsp_select="dct"
2621 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2622 mpegvideoenc_select="aandcttables me_cmp mpegvideo pixblockdsp qpeldsp"
2623 vc1dsp_select="h264chroma qpeldsp startcode"
2624 rdft_select="fft"
2625
2626 # decoders / encoders
2627 aac_decoder_select="adts_header mdct15 mdct sinewin"
2628 aac_fixed_decoder_select="adts_header mdct sinewin"
2629 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2630 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2631 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2632 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2633 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2634 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2635 adpcm_g722_decoder_select="g722dsp"
2636 adpcm_g722_encoder_select="g722dsp"
2637 aic_decoder_select="golomb idctdsp"
2638 alac_encoder_select="lpc"
2639 als_decoder_select="bswapdsp"
2640 amrnb_decoder_select="lsp"
2641 amrwb_decoder_select="lsp"
2642 amv_decoder_select="sp5x_decoder exif"
2643 amv_encoder_select="jpegtables mpegvideoenc"
2644 ape_decoder_select="bswapdsp llauddsp"
2645 apng_decoder_deps="zlib"
2646 apng_encoder_deps="zlib"
2647 apng_encoder_select="llvidencdsp"
2648 aptx_decoder_select="audio_frame_queue"
2649 aptx_encoder_select="audio_frame_queue"
2650 aptx_hd_decoder_select="audio_frame_queue"
2651 aptx_hd_encoder_select="audio_frame_queue"
2652 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2653 asv1_encoder_select="aandcttables bswapdsp fdctdsp pixblockdsp"
2654 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2655 asv2_encoder_select="aandcttables bswapdsp fdctdsp pixblockdsp"
2656 atrac1_decoder_select="mdct sinewin"
2657 atrac3_decoder_select="mdct"
2658 atrac3p_decoder_select="mdct sinewin"
2659 atrac9_decoder_select="mdct"
2660 avrn_decoder_select="exif jpegtables"
2661 bink_decoder_select="blockdsp hpeldsp"
2662 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2663 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2664 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2665 clearvideo_decoder_select="idctdsp"
2666 cllc_decoder_select="bswapdsp"
2667 comfortnoise_encoder_select="lpc"
2668 cook_decoder_select="audiodsp mdct sinewin"
2669 cscd_decoder_select="lzo"
2670 cscd_decoder_suggest="zlib"
2671 dca_decoder_select="mdct"
2672 dds_decoder_select="texturedsp"
2673 dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
2674 dnxhd_decoder_select="blockdsp idctdsp"
2675 dnxhd_encoder_select="blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2676 dolby_e_decoder_select="mdct"
2677 dvvideo_decoder_select="dvprofile idctdsp"
2678 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2679 dxa_decoder_deps="zlib"
2680 dxv_decoder_select="lzf texturedsp"
2681 eac3_decoder_select="ac3_decoder"
2682 eac3_encoder_select="ac3_encoder"
2683 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2684 eatgq_decoder_select="aandcttables"
2685 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2686 exr_decoder_deps="zlib"
2687 ffv1_decoder_select="rangecoder"
2688 ffv1_encoder_select="rangecoder"
2689 ffvhuff_decoder_select="huffyuv_decoder"
2690 ffvhuff_encoder_select="huffyuv_encoder"
2691 fic_decoder_select="golomb"
2692 flac_decoder_select="flacdsp"
2693 flac_encoder_select="bswapdsp flacdsp lpc"
2694 flashsv2_decoder_deps="zlib"
2695 flashsv2_encoder_deps="zlib"
2696 flashsv_decoder_deps="zlib"
2697 flashsv_encoder_deps="zlib"
2698 flv_decoder_select="h263_decoder"
2699 flv_encoder_select="h263_encoder"
2700 fourxm_decoder_select="blockdsp bswapdsp"
2701 fraps_decoder_select="bswapdsp huffman"
2702 g2m_decoder_deps="zlib"
2703 g2m_decoder_select="blockdsp idctdsp jpegtables"
2704 g729_decoder_select="audiodsp"
2705 h261_decoder_select="mpegvideo"
2706 h261_encoder_select="mpegvideoenc"
2707 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2708 h263_encoder_select="h263dsp mpegvideoenc"
2709 h263i_decoder_select="h263_decoder"
2710 h263p_decoder_select="h263_decoder"
2711 h263p_encoder_select="h263_encoder"
2712 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
2713 h264_decoder_suggest="error_resilience"
2714 hap_decoder_select="snappy texturedsp"
2715 hap_encoder_deps="libsnappy"
2716 hap_encoder_select="texturedspenc"
2717 hevc_decoder_select="bswapdsp cabac golomb hevcparse videodsp"
2718 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2719 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llvidencdsp"
2720 hymt_decoder_select="huffyuv_decoder"
2721 iac_decoder_select="imc_decoder"
2722 imc_decoder_select="bswapdsp fft mdct sinewin"
2723 indeo3_decoder_select="hpeldsp"
2724 indeo4_decoder_select="ividsp"
2725 indeo5_decoder_select="ividsp"
2726 interplay_video_decoder_select="hpeldsp"
2727 jpegls_decoder_select="mjpeg_decoder"
2728 jv_decoder_select="blockdsp"
2729 lagarith_decoder_select="llviddsp"
2730 ljpeg_encoder_select="idctdsp jpegtables mpegvideoenc"
2731 lscr_decoder_deps="zlib"
2732 magicyuv_decoder_select="llviddsp"
2733 magicyuv_encoder_select="llvidencdsp"
2734 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2735 metasound_decoder_select="lsp mdct sinewin"
2736 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2737 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2738 mjpeg_encoder_select="jpegtables mpegvideoenc"
2739 mjpegb_decoder_select="mjpeg_decoder"
2740 mlp_decoder_select="mlp_parser"
2741 mlp_encoder_select="lpc audio_frame_queue"
2742 motionpixels_decoder_select="bswapdsp"
2743 mp1_decoder_select="mpegaudio"
2744 mp1float_decoder_select="mpegaudio"
2745 mp2_decoder_select="mpegaudio"
2746 mp2float_decoder_select="mpegaudio"
2747 mp3_decoder_select="mpegaudio"
2748 mp3adu_decoder_select="mpegaudio"
2749 mp3adufloat_decoder_select="mpegaudio"
2750 mp3float_decoder_select="mpegaudio"
2751 mp3on4_decoder_select="mpegaudio"
2752 mp3on4float_decoder_select="mpegaudio"
2753 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2754 mpc8_decoder_select="mpegaudiodsp"
2755 mpegvideo_decoder_select="mpegvideo"
2756 mpeg1video_decoder_select="mpegvideo"
2757 mpeg1video_encoder_select="mpegvideoenc h263dsp"
2758 mpeg2video_decoder_select="mpegvideo"
2759 mpeg2video_encoder_select="mpegvideoenc h263dsp"
2760 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2761 mpeg4_encoder_select="h263_encoder"
2762 msa1_decoder_select="mss34dsp"
2763 mscc_decoder_deps="zlib"
2764 msmpeg4v1_decoder_select="h263_decoder"
2765 msmpeg4v2_decoder_select="h263_decoder"
2766 msmpeg4v2_encoder_select="h263_encoder"
2767 msmpeg4v3_decoder_select="h263_decoder"
2768 msmpeg4v3_encoder_select="h263_encoder"
2769 mss2_decoder_select="mpegvideo qpeldsp vc1_decoder"
2770 mts2_decoder_select="mss34dsp"
2771 mwsc_decoder_deps="zlib"
2772 mxpeg_decoder_select="mjpeg_decoder"
2773 nellymoser_decoder_select="mdct sinewin"
2774 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2775 nuv_decoder_select="idctdsp lzo"
2776 on2avc_decoder_select="mdct"
2777 opus_decoder_deps="swresample"
2778 opus_decoder_select="mdct15"
2779 opus_encoder_select="audio_frame_queue mdct15"
2780 png_decoder_deps="zlib"
2781 png_encoder_deps="zlib"
2782 png_encoder_select="llvidencdsp"
2783 prores_decoder_select="blockdsp idctdsp"
2784 prores_encoder_select="fdctdsp"
2785 qcelp_decoder_select="lsp"
2786 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2787 ra_144_decoder_select="audiodsp"
2788 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2789 ralf_decoder_select="golomb"
2790 rasc_decoder_deps="zlib"
2791 rawvideo_decoder_select="bswapdsp"
2792 rscc_decoder_deps="zlib"
2793 rtjpeg_decoder_select="me_cmp"
2794 rv10_decoder_select="h263_decoder"
2795 rv10_encoder_select="h263_encoder"
2796 rv20_decoder_select="h263_decoder"
2797 rv20_encoder_select="h263_encoder"
2798 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2799 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2800 screenpresso_decoder_deps="zlib"
2801 shorten_decoder_select="bswapdsp"
2802 sipr_decoder_select="lsp"
2803 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2804 snow_encoder_select="dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2805 sonic_decoder_select="golomb rangecoder"
2806 sonic_encoder_select="golomb rangecoder"
2807 sonic_ls_encoder_select="golomb rangecoder"
2808 sp5x_decoder_select="mjpeg_decoder"
2809 speedhq_decoder_select="mpegvideo"
2810 srgc_decoder_deps="zlib"
2811 svq1_decoder_select="hpeldsp"
2812 svq1_encoder_select="hpeldsp me_cmp mpegvideoenc"
2813 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2814 svq3_decoder_suggest="zlib"
2815 tak_decoder_select="audiodsp"
2816 tdsc_decoder_deps="zlib"
2817 tdsc_decoder_select="mjpeg_decoder"
2818 theora_decoder_select="vp3_decoder"
2819 thp_decoder_select="mjpeg_decoder"
2820 tiff_decoder_suggest="zlib lzma"
2821 tiff_encoder_suggest="zlib"
2822 truehd_decoder_select="mlp_parser"
2823 truehd_encoder_select="lpc audio_frame_queue"
2824 truemotion2_decoder_select="bswapdsp"
2825 truespeech_decoder_select="bswapdsp"
2826 tscc_decoder_deps="zlib"
2827 twinvq_decoder_select="mdct lsp sinewin"
2828 txd_decoder_select="texturedsp"
2829 utvideo_decoder_select="bswapdsp llviddsp"
2830 utvideo_encoder_select="bswapdsp huffman llvidencdsp"
2831 vble_decoder_select="llviddsp"
2832 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 mpegvideo vc1dsp"
2833 vc1image_decoder_select="vc1_decoder"
2834 vorbis_decoder_select="mdct"
2835 vorbis_encoder_select="audio_frame_queue mdct"
2836 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2837 vp4_decoder_select="vp3_decoder"
2838 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2839 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2840 vp6a_decoder_select="vp6_decoder"
2841 vp6f_decoder_select="vp6_decoder"
2842 vp7_decoder_select="h264pred videodsp vp8dsp"
2843 vp8_decoder_select="h264pred videodsp vp8dsp"
2844 vp9_decoder_select="videodsp vp9_parser vp9_superframe_split_bsf"
2845 wcmv_decoder_deps="zlib"
2846 webp_decoder_select="vp8_decoder exif"
2847 wmalossless_decoder_select="llauddsp"
2848 wmapro_decoder_select="mdct sinewin wma_freqs"
2849 wmav1_decoder_select="mdct sinewin wma_freqs"
2850 wmav1_encoder_select="mdct sinewin wma_freqs"
2851 wmav2_decoder_select="mdct sinewin wma_freqs"
2852 wmav2_encoder_select="mdct sinewin wma_freqs"
2853 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2854 wmv1_decoder_select="h263_decoder"
2855 wmv1_encoder_select="h263_encoder"
2856 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2857 wmv2_encoder_select="h263_encoder wmv2dsp"
2858 wmv3_decoder_select="vc1_decoder"
2859 wmv3image_decoder_select="wmv3_decoder"
2860 xma1_decoder_select="wmapro_decoder"
2861 xma2_decoder_select="wmapro_decoder"
2862 zerocodec_decoder_deps="zlib"
2863 zlib_decoder_deps="zlib"
2864 zlib_encoder_deps="zlib"
2865 zmbv_decoder_deps="zlib"
2866 zmbv_encoder_deps="zlib"
2867
2868 # hardware accelerators
2869 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2870 cuda_deps="ffnvcodec"
2871 cuvid_deps="ffnvcodec"
2872 d3d11va_deps="dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2873 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode ole32 user32"
2874 ffnvcodec_deps_any="libdl LoadLibrary"
2875 nvdec_deps="ffnvcodec"
2876 vaapi_x11_deps="xlib"
2877 videotoolbox_hwaccel_deps="videotoolbox pthreads"
2878 videotoolbox_hwaccel_extralibs="-framework QuartzCore"
2879 xvmc_deps="X11_extensions_XvMClib_h"
2880
2881 h263_vaapi_hwaccel_deps="vaapi"
2882 h263_vaapi_hwaccel_select="h263_decoder"
2883 h263_videotoolbox_hwaccel_deps="videotoolbox"
2884 h263_videotoolbox_hwaccel_select="h263_decoder"
2885 h264_d3d11va_hwaccel_deps="d3d11va"
2886 h264_d3d11va_hwaccel_select="h264_decoder"
2887 h264_d3d11va2_hwaccel_deps="d3d11va"
2888 h264_d3d11va2_hwaccel_select="h264_decoder"
2889 h264_dxva2_hwaccel_deps="dxva2"
2890 h264_dxva2_hwaccel_select="h264_decoder"
2891 h264_nvdec_hwaccel_deps="nvdec"
2892 h264_nvdec_hwaccel_select="h264_decoder"
2893 h264_vaapi_hwaccel_deps="vaapi"
2894 h264_vaapi_hwaccel_select="h264_decoder"
2895 h264_vdpau_hwaccel_deps="vdpau"
2896 h264_vdpau_hwaccel_select="h264_decoder"
2897 h264_videotoolbox_hwaccel_deps="videotoolbox"
2898 h264_videotoolbox_hwaccel_select="h264_decoder"
2899 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2900 hevc_d3d11va_hwaccel_select="hevc_decoder"
2901 hevc_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2902 hevc_d3d11va2_hwaccel_select="hevc_decoder"
2903 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2904 hevc_dxva2_hwaccel_select="hevc_decoder"
2905 hevc_nvdec_hwaccel_deps="nvdec"
2906 hevc_nvdec_hwaccel_select="hevc_decoder"
2907 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2908 hevc_vaapi_hwaccel_select="hevc_decoder"
2909 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2910 hevc_vdpau_hwaccel_select="hevc_decoder"
2911 hevc_videotoolbox_hwaccel_deps="videotoolbox"
2912 hevc_videotoolbox_hwaccel_select="hevc_decoder"
2913 mjpeg_nvdec_hwaccel_deps="nvdec"
2914 mjpeg_nvdec_hwaccel_select="mjpeg_decoder"
2915 mjpeg_vaapi_hwaccel_deps="vaapi"
2916 mjpeg_vaapi_hwaccel_select="mjpeg_decoder"
2917 mpeg_xvmc_hwaccel_deps="xvmc"
2918 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2919 mpeg1_nvdec_hwaccel_deps="nvdec"
2920 mpeg1_nvdec_hwaccel_select="mpeg1video_decoder"
2921 mpeg1_vdpau_hwaccel_deps="vdpau"
2922 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2923 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2924 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2925 mpeg1_xvmc_hwaccel_deps="xvmc"
2926 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2927 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2928 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2929 mpeg2_d3d11va2_hwaccel_deps="d3d11va"
2930 mpeg2_d3d11va2_hwaccel_select="mpeg2video_decoder"
2931 mpeg2_dxva2_hwaccel_deps="dxva2"
2932 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2933 mpeg2_nvdec_hwaccel_deps="nvdec"
2934 mpeg2_nvdec_hwaccel_select="mpeg2video_decoder"
2935 mpeg2_vaapi_hwaccel_deps="vaapi"
2936 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2937 mpeg2_vdpau_hwaccel_deps="vdpau"
2938 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2939 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2940 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2941 mpeg2_xvmc_hwaccel_deps="xvmc"
2942 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2943 mpeg4_nvdec_hwaccel_deps="nvdec"
2944 mpeg4_nvdec_hwaccel_select="mpeg4_decoder"
2945 mpeg4_vaapi_hwaccel_deps="vaapi"
2946 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2947 mpeg4_vdpau_hwaccel_deps="vdpau"
2948 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2949 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2950 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2951 vc1_d3d11va_hwaccel_deps="d3d11va"
2952 vc1_d3d11va_hwaccel_select="vc1_decoder"
2953 vc1_d3d11va2_hwaccel_deps="d3d11va"
2954 vc1_d3d11va2_hwaccel_select="vc1_decoder"
2955 vc1_dxva2_hwaccel_deps="dxva2"
2956 vc1_dxva2_hwaccel_select="vc1_decoder"
2957 vc1_nvdec_hwaccel_deps="nvdec"
2958 vc1_nvdec_hwaccel_select="vc1_decoder"
2959 vc1_vaapi_hwaccel_deps="vaapi"
2960 vc1_vaapi_hwaccel_select="vc1_decoder"
2961 vc1_vdpau_hwaccel_deps="vdpau"
2962 vc1_vdpau_hwaccel_select="vc1_decoder"
2963 vp8_nvdec_hwaccel_deps="nvdec"
2964 vp8_nvdec_hwaccel_select="vp8_decoder"
2965 vp8_vaapi_hwaccel_deps="vaapi"
2966 vp8_vaapi_hwaccel_select="vp8_decoder"
2967 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2968 vp9_d3d11va_hwaccel_select="vp9_decoder"
2969 vp9_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2970 vp9_d3d11va2_hwaccel_select="vp9_decoder"
2971 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
2972 vp9_dxva2_hwaccel_select="vp9_decoder"
2973 vp9_nvdec_hwaccel_deps="nvdec"
2974 vp9_nvdec_hwaccel_select="vp9_decoder"
2975 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9_bit_depth"
2976 vp9_vaapi_hwaccel_select="vp9_decoder"
2977 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2978 wmv3_d3d11va2_hwaccel_select="vc1_d3d11va2_hwaccel"
2979 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2980 wmv3_nvdec_hwaccel_select="vc1_nvdec_hwaccel"
2981 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2982 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2983
2984 # hardware-accelerated codecs
2985 omx_deps="libdl pthreads"
2986 omx_rpi_select="omx"
2987 qsv_deps="libmfx"
2988 qsvdec_select="qsv"
2989 qsvenc_select="qsv"
2990 qsvvpp_select="qsv"
2991 vaapi_encode_deps="vaapi"
2992 v4l2_m2m_deps="linux_videodev2_h sem_timedwait"
2993
2994 hwupload_cuda_filter_deps="ffnvcodec"
2995 scale_npp_filter_deps="ffnvcodec libnpp"
2996 scale_cuda_filter_deps="ffnvcodec"
2997 scale_cuda_filter_deps_any="cuda_nvcc cuda_llvm"
2998 thumbnail_cuda_filter_deps="ffnvcodec"
2999 thumbnail_cuda_filter_deps_any="cuda_nvcc cuda_llvm"
3000 transpose_npp_filter_deps="ffnvcodec libnpp"
3001
3002 amf_deps_any="libdl LoadLibrary"
3003 nvenc_deps="ffnvcodec"
3004 nvenc_deps_any="libdl LoadLibrary"
3005 nvenc_encoder_deps="nvenc"
3006
3007 h263_v4l2m2m_decoder_deps="v4l2_m2m h263_v4l2_m2m"
3008 h263_v4l2m2m_encoder_deps="v4l2_m2m h263_v4l2_m2m"
3009 h264_amf_encoder_deps="amf"
3010 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
3011 h264_cuvid_decoder_deps="cuvid"
3012 h264_cuvid_decoder_select="h264_mp4toannexb_bsf"
3013 h264_mediacodec_decoder_deps="mediacodec"
3014 h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
3015 h264_mmal_decoder_deps="mmal"
3016 h264_nvenc_encoder_deps="nvenc"
3017 h264_omx_encoder_deps="omx"
3018 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec"
3019 h264_qsv_encoder_select="qsvenc"
3020 h264_rkmpp_decoder_deps="rkmpp"
3021 h264_rkmpp_decoder_select="h264_mp4toannexb_bsf"
3022 h264_vaapi_encoder_select="cbs_h264 vaapi_encode"
3023 h264_v4l2m2m_decoder_deps="v4l2_m2m h264_v4l2_m2m"
3024 h264_v4l2m2m_decoder_select="h264_mp4toannexb_bsf"
3025 h264_v4l2m2m_encoder_deps="v4l2_m2m h264_v4l2_m2m"
3026 hevc_amf_encoder_deps="amf"
3027 hevc_cuvid_decoder_deps="cuvid"
3028 hevc_cuvid_decoder_select="hevc_mp4toannexb_bsf"
3029 hevc_mediacodec_decoder_deps="mediacodec"
3030 hevc_mediacodec_decoder_select="hevc_mp4toannexb_bsf hevc_parser"
3031 hevc_nvenc_encoder_deps="nvenc"
3032 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec"
3033 hevc_qsv_encoder_select="hevcparse qsvenc"
3034 hevc_rkmpp_decoder_deps="rkmpp"
3035 hevc_rkmpp_decoder_select="hevc_mp4toannexb_bsf"
3036 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
3037 hevc_vaapi_encoder_select="cbs_h265 vaapi_encode"
3038 hevc_v4l2m2m_decoder_deps="v4l2_m2m hevc_v4l2_m2m"
3039 hevc_v4l2m2m_decoder_select="hevc_mp4toannexb_bsf"
3040 hevc_v4l2m2m_encoder_deps="v4l2_m2m hevc_v4l2_m2m"
3041 mjpeg_cuvid_decoder_deps="cuvid"
3042 mjpeg_qsv_encoder_deps="libmfx"
3043 mjpeg_qsv_encoder_select="qsvenc"
3044 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
3045 mjpeg_vaapi_encoder_select="cbs_jpeg jpegtables vaapi_encode"
3046 mpeg1_cuvid_decoder_deps="cuvid"
3047 mpeg1_v4l2m2m_decoder_deps="v4l2_m2m mpeg1_v4l2_m2m"
3048 mpeg2_crystalhd_decoder_select="crystalhd"
3049 mpeg2_cuvid_decoder_deps="cuvid"
3050 mpeg2_mmal_decoder_deps="mmal"
3051 mpeg2_mediacodec_decoder_deps="mediacodec"
3052 mpeg2_qsv_decoder_select="qsvdec mpegvideo_parser"
3053 mpeg2_qsv_encoder_select="qsvenc"
3054 mpeg2_vaapi_encoder_select="cbs_mpeg2 vaapi_encode"
3055 mpeg2_v4l2m2m_decoder_deps="v4l2_m2m mpeg2_v4l2_m2m"
3056 mpeg4_crystalhd_decoder_select="crystalhd"
3057 mpeg4_cuvid_decoder_deps="cuvid"
3058 mpeg4_mediacodec_decoder_deps="mediacodec"
3059 mpeg4_mmal_decoder_deps="mmal"
3060 mpeg4_omx_encoder_deps="omx"
3061 mpeg4_v4l2m2m_decoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
3062 mpeg4_v4l2m2m_encoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
3063 msmpeg4_crystalhd_decoder_select="crystalhd"
3064 nvenc_h264_encoder_select="h264_nvenc_encoder"
3065 nvenc_hevc_encoder_select="hevc_nvenc_encoder"
3066 vc1_crystalhd_decoder_select="crystalhd"
3067 vc1_cuvid_decoder_deps="cuvid"
3068 vc1_mmal_decoder_deps="mmal"
3069 vc1_qsv_decoder_select="qsvdec vc1_parser"
3070 vc1_v4l2m2m_decoder_deps="v4l2_m2m vc1_v4l2_m2m"
3071 vp8_cuvid_decoder_deps="cuvid"
3072 vp8_mediacodec_decoder_deps="mediacodec"
3073 vp8_qsv_decoder_select="qsvdec vp8_parser"
3074 vp8_rkmpp_decoder_deps="rkmpp"
3075 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
3076 vp8_vaapi_encoder_select="vaapi_encode"
3077 vp8_v4l2m2m_decoder_deps="v4l2_m2m vp8_v4l2_m2m"
3078 vp8_v4l2m2m_encoder_deps="v4l2_m2m vp8_v4l2_m2m"
3079 vp9_cuvid_decoder_deps="cuvid"
3080 vp9_mediacodec_decoder_deps="mediacodec"
3081 vp9_rkmpp_decoder_deps="rkmpp"
3082 vp9_vaapi_encoder_deps="VAEncPictureParameterBufferVP9"
3083 vp9_vaapi_encoder_select="vaapi_encode"
3084 vp9_v4l2m2m_decoder_deps="v4l2_m2m vp9_v4l2_m2m"
3085 wmv3_crystalhd_decoder_select="crystalhd"
3086
3087 # parsers
3088 aac_parser_select="adts_header"
3089 av1_parser_select="cbs_av1"
3090 h264_parser_select="golomb h264dsp h264parse"
3091 hevc_parser_select="hevcparse"
3092 mpegaudio_parser_select="mpegaudioheader"
3093 mpegvideo_parser_select="mpegvideo"
3094 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
3095 vc1_parser_select="vc1dsp"
3096
3097 # bitstream_filters
3098 aac_adtstoasc_bsf_select="adts_header"
3099 av1_frame_split_bsf_select="cbs_av1"
3100 av1_metadata_bsf_select="cbs_av1"
3101 eac3_core_bsf_select="ac3_parser"
3102 filter_units_bsf_select="cbs"
3103 h264_metadata_bsf_deps="const_nan"
3104 h264_metadata_bsf_select="cbs_h264"
3105 h264_redundant_pps_bsf_select="cbs_h264"
3106 hevc_metadata_bsf_select="cbs_h265"
3107 mjpeg2jpeg_bsf_select="jpegtables"
3108 mpeg2_metadata_bsf_select="cbs_mpeg2"
3109 trace_headers_bsf_select="cbs"
3110 vp9_metadata_bsf_select="cbs_vp9"
3111
3112 # external libraries
3113 aac_at_decoder_deps="audiotoolbox"
3114 aac_at_decoder_select="aac_adtstoasc_bsf"
3115 ac3_at_decoder_deps="audiotoolbox"
3116 ac3_at_decoder_select="ac3_parser"
3117 adpcm_ima_qt_at_decoder_deps="audiotoolbox"
3118 alac_at_decoder_deps="audiotoolbox"
3119 amr_nb_at_decoder_deps="audiotoolbox"
3120 avisynth_deps_any="libdl LoadLibrary"
3121 avisynth_demuxer_deps="avisynth"
3122 avisynth_demuxer_select="riffdec"
3123 eac3_at_decoder_deps="audiotoolbox"
3124 eac3_at_decoder_select="ac3_parser"
3125 gsm_ms_at_decoder_deps="audiotoolbox"
3126 ilbc_at_decoder_deps="audiotoolbox"
3127 mp1_at_decoder_deps="audiotoolbox"
3128 mp2_at_decoder_deps="audiotoolbox"
3129 mp3_at_decoder_deps="audiotoolbox"
3130 mp1_at_decoder_select="mpegaudioheader"
3131 mp2_at_decoder_select="mpegaudioheader"
3132 mp3_at_decoder_select="mpegaudioheader"
3133 pcm_alaw_at_decoder_deps="audiotoolbox"
3134 pcm_mulaw_at_decoder_deps="audiotoolbox"
3135 qdmc_at_decoder_deps="audiotoolbox"
3136 qdm2_at_decoder_deps="audiotoolbox"
3137 aac_at_encoder_deps="audiotoolbox"
3138 aac_at_encoder_select="audio_frame_queue"
3139 alac_at_encoder_deps="audiotoolbox"
3140 alac_at_encoder_select="audio_frame_queue"
3141 ilbc_at_encoder_deps="audiotoolbox"
3142 ilbc_at_encoder_select="audio_frame_queue"
3143 pcm_alaw_at_encoder_deps="audiotoolbox"
3144 pcm_alaw_at_encoder_select="audio_frame_queue"
3145 pcm_mulaw_at_encoder_deps="audiotoolbox"
3146 pcm_mulaw_at_encoder_select="audio_frame_queue"
3147 chromaprint_muxer_deps="chromaprint"
3148 h264_videotoolbox_encoder_deps="pthreads"
3149 h264_videotoolbox_encoder_select="videotoolbox_encoder"
3150 hevc_videotoolbox_encoder_deps="pthreads"
3151 hevc_videotoolbox_encoder_select="videotoolbox_encoder"
3152 libaom_av1_decoder_deps="libaom"
3153 libaom_av1_encoder_deps="libaom"
3154 libaom_av1_encoder_select="extract_extradata_bsf"
3155 libaribb24_decoder_deps="libaribb24"
3156 libcelt_decoder_deps="libcelt"
3157 libcodec2_decoder_deps="libcodec2"
3158 libcodec2_encoder_deps="libcodec2"
3159 libdav1d_decoder_deps="libdav1d"
3160 libdavs2_decoder_deps="libdavs2"
3161 libfdk_aac_decoder_deps="libfdk_aac"
3162 libfdk_aac_encoder_deps="libfdk_aac"
3163 libfdk_aac_encoder_select="audio_frame_queue"
3164 libgme_demuxer_deps="libgme"
3165 libgsm_decoder_deps="libgsm"
3166 libgsm_encoder_deps="libgsm"
3167 libgsm_ms_decoder_deps="libgsm"
3168 libgsm_ms_encoder_deps="libgsm"
3169 libilbc_decoder_deps="libilbc"
3170 libilbc_encoder_deps="libilbc"
3171 libkvazaar_encoder_deps="libkvazaar"
3172 libmodplug_demuxer_deps="libmodplug"
3173 libmp3lame_encoder_deps="libmp3lame"
3174 libmp3lame_encoder_select="audio_frame_queue mpegaudioheader"
3175 libopencore_amrnb_decoder_deps="libopencore_amrnb"
3176 libopencore_amrnb_encoder_deps="libopencore_amrnb"
3177 libopencore_amrnb_encoder_select="audio_frame_queue"
3178 libopencore_amrwb_decoder_deps="libopencore_amrwb"
3179 libopenh264_decoder_deps="libopenh264"
3180 libopenh264_decoder_select="h264_mp4toannexb_bsf"
3181 libopenh264_encoder_deps="libopenh264"
3182 libopenjpeg_decoder_deps="libopenjpeg"
3183 libopenjpeg_encoder_deps="libopenjpeg"
3184 libopenmpt_demuxer_deps="libopenmpt"
3185 libopus_decoder_deps="libopus"
3186 libopus_encoder_deps="libopus"
3187 libopus_encoder_select="audio_frame_queue"
3188 librsvg_decoder_deps="librsvg"
3189 libshine_encoder_deps="libshine"
3190 libshine_encoder_select="audio_frame_queue"
3191 libspeex_decoder_deps="libspeex"
3192 libspeex_encoder_deps="libspeex"
3193 libspeex_encoder_select="audio_frame_queue"
3194 libtheora_encoder_deps="libtheora"
3195 libtwolame_encoder_deps="libtwolame"
3196 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
3197 libvorbis_decoder_deps="libvorbis"
3198 libvorbis_encoder_deps="libvorbis libvorbisenc"
3199 libvorbis_encoder_select="audio_frame_queue"
3200 libvpx_vp8_decoder_deps="libvpx"
3201 libvpx_vp8_encoder_deps="libvpx"
3202 libvpx_vp9_decoder_deps="libvpx"
3203 libvpx_vp9_encoder_deps="libvpx"
3204 libwavpack_encoder_deps="libwavpack"
3205 libwavpack_encoder_select="audio_frame_queue"
3206 libwebp_encoder_deps="libwebp"
3207 libwebp_anim_encoder_deps="libwebp"
3208 libx262_encoder_deps="libx262"
3209 libx264_encoder_deps="libx264"
3210 libx264rgb_encoder_deps="libx264 x264_csp_bgr"
3211 libx264rgb_encoder_select="libx264_encoder"
3212 libx265_encoder_deps="libx265"
3213 libxavs_encoder_deps="libxavs"
3214 libxavs2_encoder_deps="libxavs2"
3215 libxvid_encoder_deps="libxvid"
3216 libzvbi_teletext_decoder_deps="libzvbi"
3217 vapoursynth_demuxer_deps="vapoursynth"
3218 videotoolbox_suggest="coreservices"
3219 videotoolbox_deps="corefoundation coremedia corevideo"
3220 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
3221
3222 # demuxers / muxers
3223 ac3_demuxer_select="ac3_parser"
3224 aiff_muxer_select="iso_media"
3225 asf_demuxer_select="riffdec"
3226 asf_o_demuxer_select="riffdec"
3227 asf_muxer_select="riffenc"
3228 asf_stream_muxer_select="asf_muxer"
3229 avi_demuxer_select="iso_media riffdec exif"
3230 avi_muxer_select="riffenc"
3231 caf_demuxer_select="iso_media riffdec"
3232 caf_muxer_select="iso_media"
3233 dash_muxer_select="mp4_muxer"
3234 dash_demuxer_deps="libxml2"
3235 dirac_demuxer_select="dirac_parser"
3236 dts_demuxer_select="dca_parser"
3237 dtshd_demuxer_select="dca_parser"
3238 dv_demuxer_select="dvprofile"
3239 dv_muxer_select="dvprofile"
3240 dxa_demuxer_select="riffdec"
3241 eac3_demuxer_select="ac3_parser"
3242 f4v_muxer_select="mov_muxer"
3243 fifo_muxer_deps="threads"
3244 flac_demuxer_select="flac_parser"
3245 hds_muxer_select="flv_muxer"
3246 hls_muxer_select="mpegts_muxer"
3247 hls_muxer_suggest="gcrypt openssl"
3248 image2_alias_pix_demuxer_select="image2_demuxer"
3249 image2_brender_pix_demuxer_select="image2_demuxer"
3250 ipod_muxer_select="mov_muxer"
3251 ismv_muxer_select="mov_muxer"
3252 ivf_muxer_select="av1_metadata_bsf vp9_superframe_bsf"
3253 matroska_audio_muxer_select="matroska_muxer"
3254 matroska_demuxer_select="iso_media riffdec"
3255 matroska_demuxer_suggest="bzlib lzo zlib"
3256 matroska_muxer_select="iso_media riffenc"
3257 mmf_muxer_select="riffenc"
3258 mov_demuxer_select="iso_media riffdec"
3259 mov_demuxer_suggest="zlib"
3260 mov_muxer_select="iso_media riffenc rtpenc_chain"
3261 mp3_demuxer_select="mpegaudio_parser"
3262 mp3_muxer_select="mpegaudioheader"
3263 mp4_muxer_select="mov_muxer"
3264 mpegts_demuxer_select="iso_media"
3265 mpegts_muxer_select="adts_muxer latm_muxer"
3266 mpegtsraw_demuxer_select="mpegts_demuxer"
3267 mxf_d10_muxer_select="mxf_muxer"
3268 mxf_opatom_muxer_select="mxf_muxer"
3269 nut_muxer_select="riffenc"
3270 nuv_demuxer_select="riffdec"
3271 oga_muxer_select="ogg_muxer"
3272 ogg_demuxer_select="dirac_parse"
3273 ogv_muxer_select="ogg_muxer"
3274 opus_muxer_select="ogg_muxer"
3275 psp_muxer_select="mov_muxer"
3276 rtp_demuxer_select="sdp_demuxer"
3277 rtp_muxer_select="golomb"
3278 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
3279 rtsp_demuxer_select="http_protocol rtpdec"
3280 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
3281 sap_demuxer_select="sdp_demuxer"
3282 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
3283 sdp_demuxer_select="rtpdec"
3284 smoothstreaming_muxer_select="ismv_muxer"
3285 spdif_demuxer_select="adts_header"
3286 spdif_muxer_select="adts_header"
3287 spx_muxer_select="ogg_muxer"
3288 swf_demuxer_suggest="zlib"
3289 tak_demuxer_select="tak_parser"
3290 tg2_muxer_select="mov_muxer"
3291 tgp_muxer_select="mov_muxer"
3292 vobsub_demuxer_select="mpegps_demuxer"
3293 w64_demuxer_select="wav_demuxer"
3294 w64_muxer_select="wav_muxer"
3295 wav_demuxer_select="riffdec"
3296 wav_muxer_select="riffenc"
3297 webm_muxer_select="iso_media riffenc"
3298 webm_dash_manifest_demuxer_select="matroska_demuxer"
3299 wtv_demuxer_select="mpegts_demuxer riffdec"
3300 wtv_muxer_select="mpegts_muxer riffenc"
3301 xmv_demuxer_select="riffdec"
3302 xwma_demuxer_select="riffdec"
3303
3304 # indevs / outdevs
3305 android_camera_indev_deps="android camera2ndk mediandk pthreads"
3306 android_camera_indev_extralibs="-landroid -lcamera2ndk -lmediandk"
3307 alsa_indev_deps="alsa"
3308 alsa_outdev_deps="alsa"
3309 avfoundation_indev_deps="avfoundation corevideo coremedia pthreads"
3310 avfoundation_indev_suggest="coregraphics applicationservices"
3311 avfoundation_indev_extralibs="-framework Foundation"
3312 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
3313 caca_outdev_deps="libcaca"
3314 decklink_deps_any="libdl LoadLibrary"
3315 decklink_indev_deps="decklink threads"
3316 decklink_indev_extralibs="-lstdc++"
3317 decklink_outdev_deps="decklink threads"
3318 decklink_outdev_suggest="libklvanc"
3319 decklink_outdev_extralibs="-lstdc++"
3320 dshow_indev_deps="IBaseFilter"
3321 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
3322 fbdev_indev_deps="linux_fb_h"
3323 fbdev_outdev_deps="linux_fb_h"
3324 gdigrab_indev_deps="CreateDIBSection"
3325 gdigrab_indev_extralibs="-lgdi32"
3326 gdigrab_indev_select="bmp_decoder"
3327 iec61883_indev_deps="libiec61883"
3328 jack_indev_deps="libjack"
3329 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
3330 kmsgrab_indev_deps="libdrm"
3331 lavfi_indev_deps="avfilter"
3332 libcdio_indev_deps="libcdio"
3333 libdc1394_indev_deps="libdc1394"
3334 openal_indev_deps="openal"
3335 opengl_outdev_deps="opengl"
3336 opengl_outdev_suggest="sdl2"
3337 oss_indev_deps_any="sys_soundcard_h"
3338 oss_outdev_deps_any="sys_soundcard_h"
3339 pulse_indev_deps="libpulse"
3340 pulse_outdev_deps="libpulse"
3341 sdl2_outdev_deps="sdl2"
3342 sndio_indev_deps="sndio"
3343 sndio_outdev_deps="sndio"
3344 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
3345 v4l2_indev_suggest="libv4l2"
3346 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
3347 v4l2_outdev_suggest="libv4l2"
3348 vfwcap_indev_deps="vfw32 vfwcap_defines"
3349 xcbgrab_indev_deps="libxcb"
3350 xcbgrab_indev_suggest="libxcb_shm libxcb_shape libxcb_xfixes"
3351 xv_outdev_deps="xlib"
3352
3353 # protocols
3354 async_protocol_deps="threads"
3355 bluray_protocol_deps="libbluray"
3356 ffrtmpcrypt_protocol_conflict="librtmp_protocol"
3357 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl mbedtls"
3358 ffrtmpcrypt_protocol_select="tcp_protocol"
3359 ffrtmphttp_protocol_conflict="librtmp_protocol"
3360 ffrtmphttp_protocol_select="http_protocol"
3361 ftp_protocol_select="tcp_protocol"
3362 gopher_protocol_select="network"
3363 http_protocol_select="tcp_protocol"
3364 http_protocol_suggest="zlib"
3365 httpproxy_protocol_select="tcp_protocol"
3366 httpproxy_protocol_suggest="zlib"
3367 https_protocol_select="tls_protocol"
3368 https_protocol_suggest="zlib"
3369 icecast_protocol_select="http_protocol"
3370 mmsh_protocol_select="http_protocol"
3371 mmst_protocol_select="network"
3372 rtmp_protocol_conflict="librtmp_protocol"
3373 rtmp_protocol_select="tcp_protocol"
3374 rtmp_protocol_suggest="zlib"
3375 rtmpe_protocol_select="ffrtmpcrypt_protocol"
3376 rtmpe_protocol_suggest="zlib"
3377 rtmps_protocol_conflict="librtmp_protocol"
3378 rtmps_protocol_select="tls_protocol"
3379 rtmps_protocol_suggest="zlib"
3380 rtmpt_protocol_select="ffrtmphttp_protocol"
3381 rtmpt_protocol_suggest="zlib"
3382 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
3383 rtmpte_protocol_suggest="zlib"
3384 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
3385 rtmpts_protocol_suggest="zlib"
3386 rtp_protocol_select="udp_protocol"
3387 schannel_conflict="openssl gnutls libtls mbedtls"
3388 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
3389 sctp_protocol_select="network"
3390 securetransport_conflict="openssl gnutls libtls mbedtls"
3391 srtp_protocol_select="rtp_protocol srtp"
3392 tcp_protocol_select="network"
3393 tls_protocol_deps_any="gnutls openssl schannel securetransport libtls mbedtls"
3394 tls_protocol_select="tcp_protocol"
3395 udp_protocol_select="network"
3396 udplite_protocol_select="network"
3397 unix_protocol_deps="sys_un_h"
3398 unix_protocol_select="network"
3399
3400 # external library protocols
3401 librtmp_protocol_deps="librtmp"
3402 librtmpe_protocol_deps="librtmp"
3403 librtmps_protocol_deps="librtmp"
3404 librtmpt_protocol_deps="librtmp"
3405 librtmpte_protocol_deps="librtmp"
3406 libsmbclient_protocol_deps="libsmbclient gplv3"
3407 libsrt_protocol_deps="libsrt"
3408 libsrt_protocol_select="network"
3409 libssh_protocol_deps="libssh"
3410 libtls_conflict="openssl gnutls mbedtls"
3411
3412 # filters
3413 afftdn_filter_deps="avcodec"
3414 afftdn_filter_select="fft"
3415 afftfilt_filter_deps="avcodec"
3416 afftfilt_filter_select="fft"
3417 afir_filter_deps="avcodec"
3418 afir_filter_select="fft"
3419 amovie_filter_deps="avcodec avformat"
3420 aresample_filter_deps="swresample"
3421 asr_filter_deps="pocketsphinx"
3422 ass_filter_deps="libass"
3423 atempo_filter_deps="avcodec"
3424 atempo_filter_select="rdft"
3425 avgblur_opencl_filter_deps="opencl"
3426 azmq_filter_deps="libzmq"
3427 blackframe_filter_deps="gpl"
3428 bm3d_filter_deps="avcodec"
3429 bm3d_filter_select="dct"
3430 boxblur_filter_deps="gpl"
3431 boxblur_opencl_filter_deps="opencl gpl"
3432 bs2b_filter_deps="libbs2b"
3433 colorkey_opencl_filter_deps="opencl"
3434 colormatrix_filter_deps="gpl"
3435 convolution_opencl_filter_deps="opencl"
3436 convolve_filter_deps="avcodec"
3437 convolve_filter_select="fft"
3438 coreimage_filter_deps="coreimage appkit"
3439 coreimage_filter_extralibs="-framework OpenGL"
3440 coreimagesrc_filter_deps="coreimage appkit"
3441 coreimagesrc_filter_extralibs="-framework OpenGL"
3442 cover_rect_filter_deps="avcodec avformat gpl"
3443 cropdetect_filter_deps="gpl"
3444 deconvolve_filter_deps="avcodec"
3445 deconvolve_filter_select="fft"
3446 deinterlace_qsv_filter_deps="libmfx"
3447 deinterlace_vaapi_filter_deps="vaapi"
3448 delogo_filter_deps="gpl"
3449 denoise_vaapi_filter_deps="vaapi"
3450 derain_filter_select="dnn"
3451 deshake_filter_select="pixelutils"
3452 dilation_opencl_filter_deps="opencl"
3453 drawtext_filter_deps="libfreetype"
3454 drawtext_filter_suggest="libfontconfig libfribidi"
3455 elbg_filter_deps="avcodec"
3456 eq_filter_deps="gpl"
3457 erosion_opencl_filter_deps="opencl"
3458 fftfilt_filter_deps="avcodec"
3459 fftfilt_filter_select="rdft"
3460 fftdnoiz_filter_deps="avcodec"
3461 fftdnoiz_filter_select="fft"
3462 find_rect_filter_deps="avcodec avformat gpl"
3463 firequalizer_filter_deps="avcodec"
3464 firequalizer_filter_select="rdft"
3465 flite_filter_deps="libflite"
3466 framerate_filter_select="scene_sad"
3467 freezedetect_filter_select="scene_sad"
3468 frei0r_filter_deps="frei0r libdl"
3469 frei0r_src_filter_deps="frei0r libdl"
3470 fspp_filter_deps="gpl"
3471 geq_filter_deps="gpl"
3472 histeq_filter_deps="gpl"
3473 hqdn3d_filter_deps="gpl"
3474 interlace_filter_deps="gpl"
3475 kerndeint_filter_deps="gpl"
3476 ladspa_filter_deps="ladspa libdl"
3477 lensfun_filter_deps="liblensfun version3"
3478 lv2_filter_deps="lv2"
3479 mcdeint_filter_deps="avcodec gpl"
3480 movie_filter_deps="avcodec avformat"
3481 mpdecimate_filter_deps="gpl"
3482 mpdecimate_filter_select="pixelutils"
3483 minterpolate_filter_select="scene_sad"
3484 mptestsrc_filter_deps="gpl"
3485 negate_filter_deps="lut_filter"
3486 nlmeans_opencl_filter_deps="opencl"
3487 nnedi_filter_deps="gpl"
3488 ocr_filter_deps="libtesseract"
3489 ocv_filter_deps="libopencv"
3490 openclsrc_filter_deps="opencl"
3491 overlay_opencl_filter_deps="opencl"
3492 overlay_qsv_filter_deps="libmfx"
3493 overlay_qsv_filter_select="qsvvpp"
3494 owdenoise_filter_deps="gpl"
3495 pan_filter_deps="swresample"
3496 perspective_filter_deps="gpl"
3497 phase_filter_deps="gpl"
3498 pp7_filter_deps="gpl"
3499 pp_filter_deps="gpl postproc"
3500 prewitt_opencl_filter_deps="opencl"
3501 procamp_vaapi_filter_deps="vaapi"
3502 program_opencl_filter_deps="opencl"
3503 pullup_filter_deps="gpl"
3504 removelogo_filter_deps="avcodec avformat swscale"
3505 repeatfields_filter_deps="gpl"
3506 resample_filter_deps="avresample"
3507 roberts_opencl_filter_deps="opencl"
3508 rubberband_filter_deps="librubberband"
3509 sab_filter_deps="gpl swscale"
3510 scale2ref_filter_deps="swscale"
3511 scale_filter_deps="swscale"
3512 scale_qsv_filter_deps="libmfx"
3513 select_filter_select="scene_sad"
3514 sharpness_vaapi_filter_deps="vaapi"
3515 showcqt_filter_deps="avcodec avformat swscale"
3516 showcqt_filter_suggest="libfontconfig libfreetype"
3517 showcqt_filter_select="fft"
3518 showfreqs_filter_deps="avcodec"
3519 showfreqs_filter_select="fft"
3520 showspectrum_filter_deps="avcodec"
3521 showspectrum_filter_select="fft"
3522 showspectrumpic_filter_deps="avcodec"
3523 showspectrumpic_filter_select="fft"
3524 signature_filter_deps="gpl avcodec avformat"
3525 smartblur_filter_deps="gpl swscale"
3526 sobel_opencl_filter_deps="opencl"
3527 sofalizer_filter_deps="libmysofa avcodec"
3528 sofalizer_filter_select="fft"
3529 spectrumsynth_filter_deps="avcodec"
3530 spectrumsynth_filter_select="fft"
3531 spp_filter_deps="gpl avcodec"
3532 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3533 sr_filter_deps="avformat swscale"
3534 sr_filter_select="dnn"
3535 stereo3d_filter_deps="gpl"
3536 subtitles_filter_deps="avformat avcodec libass"
3537 super2xsai_filter_deps="gpl"
3538 pixfmts_super2xsai_test_deps="super2xsai_filter"
3539 tinterlace_filter_deps="gpl"
3540 tinterlace_merge_test_deps="tinterlace_filter"
3541 tinterlace_pad_test_deps="tinterlace_filter"
3542 tonemap_filter_deps="const_nan"
3543 tonemap_opencl_filter_deps="opencl const_nan"
3544 transpose_opencl_filter_deps="opencl"
3545 transpose_vaapi_filter_deps="vaapi VAProcPipelineCaps_rotation_flags"
3546 unsharp_opencl_filter_deps="opencl"
3547 uspp_filter_deps="gpl avcodec"
3548 vaguedenoiser_filter_deps="gpl"
3549 vidstabdetect_filter_deps="libvidstab"
3550 vidstabtransform_filter_deps="libvidstab"
3551 libvmaf_filter_deps="libvmaf pthreads"
3552 zmq_filter_deps="libzmq"
3553 zoompan_filter_deps="swscale"
3554 zscale_filter_deps="libzimg const_nan"
3555 scale_vaapi_filter_deps="vaapi"
3556 vpp_qsv_filter_deps="libmfx"
3557 vpp_qsv_filter_select="qsvvpp"
3558 yadif_cuda_filter_deps="ffnvcodec"
3559 yadif_cuda_filter_deps_any="cuda_nvcc cuda_llvm"
3560
3561 # examples
3562 avio_dir_cmd_deps="avformat avutil"
3563 avio_reading_deps="avformat avcodec avutil"
3564 decode_audio_example_deps="avcodec avutil"
3565 decode_video_example_deps="avcodec avutil"
3566 demuxing_decoding_example_deps="avcodec avformat avutil"
3567 encode_audio_example_deps="avcodec avutil"
3568 encode_video_example_deps="avcodec avutil"
3569 extract_mvs_example_deps="avcodec avformat avutil"
3570 filter_audio_example_deps="avfilter avutil"
3571 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3572 filtering_video_example_deps="avfilter avcodec avformat avutil"
3573 http_multiclient_example_deps="avformat avutil fork"
3574 hw_decode_example_deps="avcodec avformat avutil"
3575 metadata_example_deps="avformat avutil"
3576 muxing_example_deps="avcodec avformat avutil swscale"
3577 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
3578 remuxing_example_deps="avcodec avformat avutil"
3579 resampling_audio_example_deps="avutil swresample"
3580 scaling_video_example_deps="avutil swscale"
3581 transcode_aac_example_deps="avcodec avformat swresample"
3582 transcoding_example_deps="avfilter avcodec avformat avutil"
3583 vaapi_encode_example_deps="avcodec avutil h264_vaapi_encoder"
3584 vaapi_transcode_example_deps="avcodec avformat avutil h264_vaapi_encoder"
3585
3586 # EXTRALIBS_LIST
3587 cpu_init_extralibs="pthreads_extralibs"
3588 cws2fws_extralibs="zlib_extralibs"
3589
3590 # libraries, in any order
3591 avcodec_deps="avutil"
3592 avcodec_suggest="libm"
3593 avcodec_select="null_bsf"
3594 avdevice_deps="avformat avcodec avutil"
3595 avdevice_suggest="libm"
3596 avfilter_deps="avutil"
3597 avfilter_suggest="libm"
3598 avformat_deps="avcodec avutil"
3599 avformat_suggest="libm network zlib"
3600 avresample_deps="avutil"
3601 avresample_suggest="libm"
3602 avutil_suggest="clock_gettime ffnvcodec libm libdrm libmfx opencl user32 vaapi videotoolbox corefoundation corevideo coremedia bcrypt"
3603 postproc_deps="avutil gpl"
3604 postproc_suggest="libm"
3605 swresample_deps="avutil"
3606 swresample_suggest="libm libsoxr"
3607 swscale_deps="avutil"
3608 swscale_suggest="libm"
3609
3610 avcodec_extralibs="pthreads_extralibs iconv_extralibs dxva2_extralibs"
3611 avfilter_extralibs="pthreads_extralibs"
3612 avutil_extralibs="d3d11va_extralibs nanosleep_extralibs pthreads_extralibs vaapi_drm_extralibs vaapi_x11_extralibs vdpau_x11_extralibs"
3613
3614 # programs
3615 ffmpeg_deps="avcodec avfilter avformat"
3616 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3617                hflip_filter null_filter
3618                transpose_filter trim_filter vflip_filter"
3619 ffmpeg_suggest="ole32 psapi shell32"
3620 ffplay_deps="avcodec avformat swscale swresample sdl2"
3621 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3622 ffplay_suggest="shell32"
3623 ffprobe_deps="avcodec avformat"
3624 ffprobe_suggest="shell32"
3625
3626 # documentation
3627 podpages_deps="perl"
3628 manpages_deps="perl pod2man"
3629 htmlpages_deps="perl"
3630 htmlpages_deps_any="makeinfo_html texi2html"
3631 txtpages_deps="perl makeinfo"
3632 doc_deps_any="manpages htmlpages podpages txtpages"
3633
3634 # default parameters
3635
3636 logfile="ffbuild/config.log"
3637
3638 # installation paths
3639 prefix_default="/usr/local"
3640 bindir_default='${prefix}/bin'
3641 datadir_default='${prefix}/share/ffmpeg'
3642 docdir_default='${prefix}/share/doc/ffmpeg'
3643 incdir_default='${prefix}/include'
3644 libdir_default='${prefix}/lib'
3645 mandir_default='${prefix}/share/man'
3646
3647 # toolchain
3648 ar_default="ar"
3649 cc_default="gcc"
3650 cxx_default="g++"
3651 host_cc_default="gcc"
3652 doxygen_default="doxygen"
3653 install="install"
3654 ln_s_default="ln -s -f"
3655 nm_default="nm -g"
3656 pkg_config_default=pkg-config
3657 ranlib_default="ranlib"
3658 strip_default="strip"
3659 version_script='--version-script'
3660 objformat="elf32"
3661 x86asmexe_default="nasm"
3662 windres_default="windres"
3663 striptype="direct"
3664
3665 # OS
3666 target_os_default=$(tolower $(uname -s))
3667 host_os=$target_os_default
3668
3669 # machine
3670 if test "$target_os_default" = aix; then
3671     arch_default=$(uname -p)
3672     strip_default="strip -X32_64"
3673     nm_default="nm -g -X32_64"
3674 else
3675     arch_default=$(uname -m)
3676 fi
3677 cpu="generic"
3678 intrinsics="none"
3679
3680 # configurable options
3681 enable $PROGRAM_LIST
3682 enable $DOCUMENT_LIST
3683 enable $EXAMPLE_LIST
3684 enable $(filter_out avresample $LIBRARY_LIST)
3685 enable stripping
3686
3687 enable asm
3688 enable debug
3689 enable doc
3690 enable faan faandct faanidct
3691 enable optimizations
3692 enable runtime_cpudetect
3693 enable safe_bitstream_reader
3694 enable static
3695 enable swscale_alpha
3696 enable valgrind_backtrace
3697
3698 sws_max_filter_size_default=256
3699 set_default sws_max_filter_size
3700
3701 # internal components are enabled by default
3702 enable $EXTRALIBS_LIST
3703
3704 # Avoid external, non-system, libraries getting enabled by dependency resolution
3705 disable $EXTERNAL_LIBRARY_LIST $HWACCEL_LIBRARY_LIST
3706
3707 # build settings
3708 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3709 LIBPREF="lib"
3710 LIBSUF=".a"
3711 FULLNAME='$(NAME)$(BUILDSUF)'
3712 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3713 SLIBPREF="lib"
3714 SLIBSUF=".so"
3715 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3716 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3717 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3718 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3719 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3720 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3721 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
3722
3723 asflags_filter=echo
3724 cflags_filter=echo
3725 ldflags_filter=echo
3726
3727 AS_C='-c'
3728 AS_O='-o $@'
3729 CC_C='-c'
3730 CC_E='-E -o $@'
3731 CC_O='-o $@'
3732 CXX_C='-c'
3733 CXX_O='-o $@'
3734 OBJCC_C='-c'
3735 OBJCC_E='-E -o $@'
3736 OBJCC_O='-o $@'
3737 X86ASM_O='-o $@'
3738 LD_O='-o $@'
3739 LD_LIB='-l%'
3740 LD_PATH='-L'
3741 HOSTCC_C='-c'
3742 HOSTCC_E='-E -o $@'
3743 HOSTCC_O='-o $@'
3744 HOSTLD_O='-o $@'
3745 NVCC_C='-c'
3746 NVCC_O='-o $@'
3747
3748 host_extralibs='-lm'
3749 host_cflags_filter=echo
3750 host_ldflags_filter=echo
3751
3752 target_path='$(CURDIR)'
3753
3754 # since the object filename is not given with the -MM flag, the compiler
3755 # is only able to print the basename, and we must add the path ourselves
3756 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3757 DEPFLAGS='-MM'
3758
3759 mkdir -p ffbuild
3760
3761 # find source path
3762 if test -f configure; then
3763     source_path=.
3764 elif test -f src/configure; then
3765     source_path=src
3766 else
3767     source_path=$(cd $(dirname "$0"); pwd)
3768     case "$source_path" in
3769         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3770     esac
3771     test -e "$source_path/config.h" &&
3772         die "Out of tree builds are impossible with config.h in source dir."
3773 fi
3774
3775 for v in "$@"; do
3776     r=${v#*=}
3777     l=${v%"$r"}
3778     r=$(sh_quote "$r")
3779     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3780 done
3781
3782 find_things_extern(){
3783     thing=$1
3784     pattern=$2
3785     file=$source_path/$3
3786     out=${4:-$thing}
3787     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$out/p" "$file"
3788 }
3789
3790 find_filters_extern(){
3791     file=$source_path/$1
3792     sed -n 's/^extern AVFilter ff_[avfsinkrc]\{2,5\}_\([[:alnum:]_]\{1,\}\);/\1_filter/p' $file
3793 }
3794
3795 FILTER_LIST=$(find_filters_extern libavfilter/allfilters.c)
3796 OUTDEV_LIST=$(find_things_extern muxer AVOutputFormat libavdevice/alldevices.c outdev)
3797 INDEV_LIST=$(find_things_extern demuxer AVInputFormat libavdevice/alldevices.c indev)
3798 MUXER_LIST=$(find_things_extern muxer AVOutputFormat libavformat/allformats.c)
3799 DEMUXER_LIST=$(find_things_extern demuxer AVInputFormat libavformat/allformats.c)
3800 ENCODER_LIST=$(find_things_extern encoder AVCodec libavcodec/allcodecs.c)
3801 DECODER_LIST=$(find_things_extern decoder AVCodec libavcodec/allcodecs.c)
3802 CODEC_LIST="
3803     $ENCODER_LIST
3804     $DECODER_LIST
3805 "
3806 PARSER_LIST=$(find_things_extern parser AVCodecParser libavcodec/parsers.c)
3807 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3808 HWACCEL_LIST=$(find_things_extern hwaccel AVHWAccel libavcodec/hwaccels.h)
3809 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3810
3811 AVCODEC_COMPONENTS_LIST="
3812     $BSF_LIST
3813     $DECODER_LIST
3814     $ENCODER_LIST
3815     $HWACCEL_LIST
3816     $PARSER_LIST
3817 "
3818
3819 AVDEVICE_COMPONENTS_LIST="
3820     $INDEV_LIST
3821     $OUTDEV_LIST
3822 "
3823
3824 AVFILTER_COMPONENTS_LIST="
3825     $FILTER_LIST
3826 "
3827
3828 AVFORMAT_COMPONENTS_LIST="
3829     $DEMUXER_LIST
3830     $MUXER_LIST
3831     $PROTOCOL_LIST
3832 "
3833
3834 ALL_COMPONENTS="
3835     $AVCODEC_COMPONENTS_LIST
3836     $AVDEVICE_COMPONENTS_LIST
3837     $AVFILTER_COMPONENTS_LIST
3838     $AVFORMAT_COMPONENTS_LIST
3839 "
3840
3841 for n in $COMPONENT_LIST; do
3842     v=$(toupper ${n%s})_LIST
3843     eval enable \$$v
3844     eval ${n}_if_any="\$$v"
3845 done
3846
3847 enable $ARCH_EXT_LIST
3848
3849 die_unknown(){
3850     echo "Unknown option \"$1\"."
3851     echo "See $0 --help for available options."
3852     exit 1
3853 }
3854
3855 print_in_columns() {
3856     tr ' ' '\n' | sort | tr '\r\n' '  ' | awk -v col_width=24 -v width="$ncols" '
3857     {
3858         num_cols = width > col_width ? int(width / col_width) : 1;
3859         num_rows = int((NF + num_cols-1) / num_cols);
3860         y = x = 1;
3861         for (y = 1; y <= num_rows; y++) {
3862             i = y;
3863             for (x = 1; x <= num_cols; x++) {
3864                 if (i <= NF) {
3865                   line = sprintf("%s%-" col_width "s", line, $i);
3866                 }
3867                 i = i + num_rows;
3868             }
3869             print line; line = "";
3870         }
3871     }' | sed 's/ *$//'
3872 }
3873
3874 show_list() {
3875     suffix=_$1
3876     shift
3877     echo $* | sed s/$suffix//g | print_in_columns
3878     exit 0
3879 }
3880
3881 rand_list(){
3882     IFS=', '
3883     set -- $*
3884     unset IFS
3885     for thing; do
3886         comp=${thing%:*}
3887         prob=${thing#$comp}
3888         prob=${prob#:}
3889         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3890         echo "prob ${prob:-0.5}"
3891         printf '%s\n' $comp
3892     done
3893 }
3894
3895 do_random(){
3896     action=$1
3897     shift
3898     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3899     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3900 }
3901
3902 for opt do
3903     optval="${opt#*=}"
3904     case "$opt" in
3905         --extra-ldflags=*)
3906             add_ldflags $optval
3907         ;;
3908         --extra-ldexeflags=*)
3909             add_ldexeflags $optval
3910         ;;
3911         --extra-ldsoflags=*)
3912             add_ldsoflags $optval
3913         ;;
3914         --extra-ldlibflags=*)
3915             warn "The --extra-ldlibflags option is only provided for compatibility and will be\n"\
3916                  "removed in the future. Use --extra-ldsoflags instead."
3917             add_ldsoflags $optval
3918         ;;
3919         --extra-libs=*)
3920             add_extralibs $optval
3921         ;;
3922         --disable-devices)
3923             disable $INDEV_LIST $OUTDEV_LIST
3924         ;;
3925         --enable-debug=*)
3926             debuglevel="$optval"
3927         ;;
3928         --disable-programs)
3929             disable $PROGRAM_LIST
3930         ;;
3931         --disable-everything)
3932             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3933         ;;
3934         --disable-all)
3935             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3936             disable $LIBRARY_LIST $PROGRAM_LIST doc
3937             enable avutil
3938         ;;
3939         --enable-random|--disable-random)
3940             action=${opt%%-random}
3941             do_random ${action#--} $COMPONENT_LIST
3942         ;;
3943         --enable-random=*|--disable-random=*)
3944             action=${opt%%-random=*}
3945             do_random ${action#--} $optval
3946         ;;
3947         --enable-sdl)
3948             enable sdl2
3949         ;;
3950         --enable-*=*|--disable-*=*)
3951             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3952             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3953             eval list=\$$(toupper $thing)_LIST
3954             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3955             list=$(filter "$name" $list)
3956             [ "$list" = "" ] && warn "Option $opt did not match anything"
3957             test $action = enable && warn_if_gets_disabled $list
3958             $action $list
3959         ;;
3960         --enable-yasm|--disable-yasm)
3961             warn "The ${opt} option is only provided for compatibility and will be\n"\
3962                  "removed in the future. Use --enable-x86asm / --disable-x86asm instead."
3963             test $opt = --enable-yasm && x86asm=yes || x86asm=no
3964         ;;
3965         --yasmexe=*)
3966             warn "The --yasmexe option is only provided for compatibility and will be\n"\
3967                  "removed in the future. Use --x86asmexe instead."
3968             x86asmexe="$optval"
3969         ;;
3970         --enable-?*|--disable-?*)
3971             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3972             if is_in $option $COMPONENT_LIST; then
3973                 test $action = disable && action=unset
3974                 eval $action \$$(toupper ${option%s})_LIST
3975             elif is_in $option $CMDLINE_SELECT; then
3976                 $action $option
3977             else
3978                 die_unknown $opt
3979             fi
3980         ;;
3981         --list-*)
3982             NAME="${opt#--list-}"
3983             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3984             NAME=${NAME%s}
3985             eval show_list $NAME \$$(toupper $NAME)_LIST
3986         ;;
3987         --help|-h) show_help
3988         ;;
3989         --quiet|-q) quiet=yes
3990         ;;
3991         --fatal-warnings) enable fatal_warnings
3992         ;;
3993         --libfuzzer=*)
3994             libfuzzer_path="$optval"
3995         ;;
3996         *)
3997             optname="${opt%%=*}"
3998             optname="${optname#--}"
3999             optname=$(echo "$optname" | sed 's/-/_/g')
4000             if is_in $optname $CMDLINE_SET; then
4001                 eval $optname='$optval'
4002             elif is_in $optname $CMDLINE_APPEND; then
4003                 append $optname "$optval"
4004             else
4005                 die_unknown $opt
4006             fi
4007         ;;
4008     esac
4009 done
4010
4011 for e in $env; do
4012     eval "export $e"
4013 done
4014
4015 if disabled autodetect; then
4016
4017     # Unless iconv is explicitely disabled by the user, we still want to probe
4018     # for the iconv from the libc.
4019     disabled iconv || enable libc_iconv
4020
4021     disable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
4022     disable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
4023 fi
4024 # Mark specifically enabled, but normally autodetected libraries as requested.
4025 for lib in $AUTODETECT_LIBS; do
4026     enabled $lib && request $lib
4027 done
4028 #TODO: switch to $AUTODETECT_LIBS when $THREADS_LIST is supported the same way
4029 enable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
4030 enable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
4031
4032 disabled logging && logfile=/dev/null
4033
4034 # command line configuration sanity checks
4035
4036 # we need to build at least one lib type
4037 if ! enabled_any static shared; then
4038     cat <<EOF
4039 At least one library type must be built.
4040 Specify --enable-static to build the static libraries or --enable-shared to
4041 build the shared libraries as well. To only build the shared libraries specify
4042 --disable-static in addition to --enable-shared.
4043 EOF
4044     exit 1
4045 fi
4046
4047 die_license_disabled() {
4048     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
4049 }
4050
4051 die_license_disabled_gpl() {
4052     enabled $1 || { enabled $v && die "$v is incompatible with the gpl and --enable-$1 is not specified."; }
4053 }
4054
4055 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
4056 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
4057
4058 enabled gpl && map "die_license_disabled_gpl nonfree" $EXTERNAL_LIBRARY_NONFREE_LIST
4059 map "die_license_disabled nonfree" $HWACCEL_LIBRARY_NONFREE_LIST
4060
4061 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
4062
4063 if enabled nonfree; then
4064     license="nonfree and unredistributable"
4065 elif enabled gplv3; then
4066     license="GPL version 3 or later"
4067 elif enabled lgplv3; then
4068     license="LGPL version 3 or later"
4069 elif enabled gpl; then
4070     license="GPL version 2 or later"
4071 else
4072     license="LGPL version 2.1 or later"
4073 fi
4074
4075 enabled_all gnutls openssl &&
4076     die "GnuTLS and OpenSSL must not be enabled at the same time."
4077
4078 enabled_all gnutls mbedtls &&
4079     die "GnuTLS and mbedTLS must not be enabled at the same time."
4080
4081 enabled_all openssl mbedtls &&
4082     die "OpenSSL and mbedTLS must not be enabled at the same time."
4083
4084 # Disable all the library-specific components if the library itself
4085 # is disabled, see AVCODEC_LIST and following _LIST variables.
4086
4087 disable_components(){
4088     disabled ${1} && disable $(
4089         eval components="\$$(toupper ${1})_COMPONENTS"
4090         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
4091     )
4092 }
4093
4094 map 'disable_components $v' $LIBRARY_LIST
4095
4096 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
4097 set >> $logfile
4098
4099 test -n "$valgrind" && toolchain="valgrind-memcheck"
4100
4101 enabled ossfuzz && ! echo $CFLAGS | grep -q -- "-fsanitize="  && ! echo $CFLAGS | grep -q -- "-fcoverage-mapping" &&{
4102     add_cflags  -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp -fno-omit-frame-pointer
4103     add_ldflags -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp
4104 }
4105
4106 case "$toolchain" in
4107     *-asan)
4108         cc_default="${toolchain%-asan}"
4109         add_cflags  -fsanitize=address
4110         add_ldflags -fsanitize=address
4111     ;;
4112     *-msan)
4113         cc_default="${toolchain%-msan}"
4114         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
4115         add_ldflags -fsanitize=memory
4116     ;;
4117     *-tsan)
4118         cc_default="${toolchain%-tsan}"
4119         add_cflags  -fsanitize=thread
4120         add_ldflags -fsanitize=thread
4121         case "$toolchain" in
4122             gcc-tsan)
4123                 add_cflags  -fPIC
4124                 add_ldflags -fPIC
4125                 ;;
4126         esac
4127     ;;
4128     *-usan)
4129         cc_default="${toolchain%-usan}"
4130         add_cflags  -fsanitize=undefined
4131         add_ldflags -fsanitize=undefined
4132     ;;
4133     valgrind-*)
4134         target_exec_default="valgrind"
4135         case "$toolchain" in
4136             valgrind-massif)
4137                 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"
4138                 ;;
4139             valgrind-memcheck)
4140                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
4141                 ;;
4142         esac
4143     ;;
4144     msvc)
4145         # Check whether the current MSVC version needs the C99 converter.
4146         # From MSVC 2013 (compiler major version 18) onwards, it does actually
4147         # support enough of C99 to build ffmpeg. Default to the new
4148         # behaviour if the regexp was unable to match anything, since this
4149         # successfully parses the version number of existing supported
4150         # versions that require the converter (MSVC 2010 and 2012).
4151         cl_major_ver=$(cl.exe 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
4152         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
4153             cc_default="cl.exe"
4154             cxx_default="cl.exe"
4155         else
4156             die "Unsupported MSVC version (2013 or newer required)"
4157         fi
4158         ld_default="$source_path/compat/windows/mslink"
4159         nm_default="dumpbin.exe -symbols"
4160         ar_default="lib.exe"
4161         case "$arch" in
4162         aarch64|arm64)
4163             as_default="armasm64.exe"
4164             ;;
4165         arm*)
4166             as_default="armasm.exe"
4167             ;;
4168         esac
4169         target_os_default="win32"
4170         # Use a relative path for TMPDIR. This makes sure all the
4171         # ffconf temp files are written with a relative path, avoiding
4172         # issues with msys/win32 path conversion for MSVC parameters
4173         # such as -Fo<file> or -out:<file>.
4174         TMPDIR=.
4175     ;;
4176     icl)
4177         cc_default="icl"
4178         ld_default="xilink"
4179         nm_default="dumpbin -symbols"
4180         ar_default="xilib"
4181         target_os_default="win32"
4182         TMPDIR=.
4183     ;;
4184     gcov)
4185         add_cflags  -fprofile-arcs -ftest-coverage
4186         add_ldflags -fprofile-arcs -ftest-coverage
4187     ;;
4188     llvm-cov)
4189         add_cflags -fprofile-arcs -ftest-coverage
4190         add_ldflags --coverage
4191     ;;
4192     hardened)
4193         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
4194         add_cflags   -fno-strict-overflow -fstack-protector-all
4195         add_ldflags  -Wl,-z,relro -Wl,-z,now
4196         add_cflags   -fPIE
4197         add_ldexeflags -fPIE -pie
4198     ;;
4199     ?*)
4200         die "Unknown toolchain $toolchain"
4201     ;;
4202 esac
4203
4204 if test -n "$cross_prefix"; then
4205     test -n "$arch" && test -n "$target_os" ||
4206         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
4207     enable cross_compile
4208 fi
4209
4210 set_default target_os
4211 if test "$target_os" = android; then
4212     cc_default="clang"
4213 fi
4214
4215 ar_default="${cross_prefix}${ar_default}"
4216 cc_default="${cross_prefix}${cc_default}"
4217 cxx_default="${cross_prefix}${cxx_default}"
4218 nm_default="${cross_prefix}${nm_default}"
4219 pkg_config_default="${cross_prefix}${pkg_config_default}"
4220 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
4221     ranlib_default="${cross_prefix}${ranlib_default} -D"
4222 else
4223     ranlib_default="${cross_prefix}${ranlib_default}"
4224 fi
4225 strip_default="${cross_prefix}${strip_default}"
4226 windres_default="${cross_prefix}${windres_default}"
4227
4228 sysinclude_default="${sysroot}/usr/include"
4229
4230 if enabled cuda_sdk; then
4231     warn "Option --enable-cuda-sdk is deprecated. Use --enable-cuda-nvcc instead."
4232     enable cuda_nvcc
4233 fi
4234
4235 if enabled cuda_nvcc; then
4236     nvcc_default="nvcc"
4237     nvccflags_default="-gencode arch=compute_30,code=sm_30 -O2"
4238 else
4239     nvcc_default="clang"
4240     nvccflags_default="--cuda-gpu-arch=sm_30 -O2"
4241     NVCC_C=""
4242 fi
4243
4244 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
4245     target_exec x86asmexe nvcc
4246 enabled cross_compile || host_cc_default=$cc
4247 set_default host_cc
4248
4249 pkg_config_fail_message=""
4250 if ! $pkg_config --version >/dev/null 2>&1; then
4251     warn "$pkg_config not found, library detection may fail."
4252     pkg_config=false
4253 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
4254     pkg_config_fail_message="
4255 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
4256 fi
4257
4258 if test $doxygen != $doxygen_default && \
4259   ! $doxygen --version >/dev/null 2>&1; then
4260     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
4261 fi
4262
4263 exesuf() {
4264     case $1 in
4265         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
4266     esac
4267 }
4268
4269 EXESUF=$(exesuf $target_os)
4270 HOSTEXESUF=$(exesuf $host_os)
4271
4272 # set temporary file name
4273 : ${TMPDIR:=$TEMPDIR}
4274 : ${TMPDIR:=$TMP}
4275 : ${TMPDIR:=/tmp}
4276
4277 if [ -n "$tempprefix" ] ; then
4278     mktemp(){
4279         tmpname="$tempprefix.${HOSTNAME}.${UID}"
4280         echo "$tmpname"
4281         mkdir "$tmpname"
4282     }
4283 elif ! test_cmd mktemp -u XXXXXX; then
4284     # simple replacement for missing mktemp
4285     # NOT SAFE FOR GENERAL USE
4286     mktemp(){
4287         tmpname="${2%%XXX*}.${HOSTNAME}.${UID}.$$"
4288         echo "$tmpname"
4289         mkdir "$tmpname"
4290     }
4291 fi
4292
4293 FFTMPDIR=$(mktemp -d "${TMPDIR}/ffconf.XXXXXXXX" 2> /dev/null) ||
4294     die "Unable to create temporary directory in $TMPDIR."
4295
4296 tmpfile(){
4297     tmp="${FFTMPDIR}/test"$2
4298     (set -C; exec > $tmp) 2> /dev/null ||
4299         die "Unable to create temporary file in $FFTMPDIR."
4300     eval $1=$tmp
4301 }
4302
4303 trap 'rm -rf -- "$FFTMPDIR"' EXIT
4304 trap 'exit 2' INT
4305
4306 tmpfile TMPASM .asm
4307 tmpfile TMPC   .c
4308 tmpfile TMPCPP .cpp
4309 tmpfile TMPE   $EXESUF
4310 tmpfile TMPH   .h
4311 tmpfile TMPM   .m
4312 tmpfile TMPCU  .cu
4313 tmpfile TMPO   .o
4314 tmpfile TMPS   .S
4315 tmpfile TMPSH  .sh
4316 tmpfile TMPV   .ver
4317
4318 unset -f mktemp
4319
4320 chmod +x $TMPE
4321
4322 # make sure we can execute files in $TMPDIR
4323 cat > $TMPSH 2>> $logfile <<EOF
4324 #! /bin/sh
4325 EOF
4326 chmod +x $TMPSH >> $logfile 2>&1
4327 if ! $TMPSH >> $logfile 2>&1; then
4328     cat <<EOF
4329 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
4330 variable to another directory and make sure that it is not mounted noexec.
4331 EOF
4332     die "Sanity test failed."
4333 fi
4334
4335 armasm_flags(){
4336     for flag; do
4337         case $flag in
4338             # Filter out MSVC cl.exe options from cflags that shouldn't
4339             # be passed to gas-preprocessor
4340             -M[TD]*)                                            ;;
4341             *)                  echo $flag                      ;;
4342         esac
4343    done
4344 }
4345
4346 cparser_flags(){
4347     for flag; do
4348         case $flag in
4349             -Wno-switch)             echo -Wno-switch-enum ;;
4350             -Wno-format-zero-length) ;;
4351             -Wdisabled-optimization) ;;
4352             -Wno-pointer-sign)       echo -Wno-other ;;
4353             *)                       echo $flag ;;
4354         esac
4355     done
4356 }
4357
4358 msvc_common_flags(){
4359     for flag; do
4360         case $flag in
4361             # In addition to specifying certain flags under the compiler
4362             # specific filters, they must be specified here as well or else the
4363             # generic catch all at the bottom will print the original flag.
4364             -Wall)                ;;
4365             -Wextra)              ;;
4366             -std=c99)             ;;
4367             # Common flags
4368             -fomit-frame-pointer) ;;
4369             -g)                   echo -Z7 ;;
4370             -fno-math-errno)      ;;
4371             -fno-common)          ;;
4372             -fno-signed-zeros)    ;;
4373             -fPIC)                ;;
4374             -mthumb)              ;;
4375             -march=*)             ;;
4376             -lz)                  echo zlib.lib ;;
4377             -lx264)               echo libx264.lib ;;
4378             -lstdc++)             ;;
4379             -l*)                  echo ${flag#-l}.lib ;;
4380             -LARGEADDRESSAWARE)   echo $flag ;;
4381             -L*)                  echo -libpath:${flag#-L} ;;
4382             *)                    echo $flag ;;
4383         esac
4384     done
4385 }
4386
4387 msvc_flags(){
4388     msvc_common_flags "$@"
4389     for flag; do
4390         case $flag in
4391             -Wall)                echo -W3 -wd4018 -wd4146 -wd4244 -wd4305     \
4392                                        -wd4554 ;;
4393             -Wextra)              echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
4394                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
4395                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
4396                                        -wd4307 \
4397                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
4398         esac
4399     done
4400 }
4401
4402 icl_flags(){
4403     msvc_common_flags "$@"
4404     for flag; do
4405         case $flag in
4406             # Despite what Intel's documentation says -Wall, which is supported
4407             # on Windows, does enable remarks so disable them here.
4408             -Wall)                echo $flag -Qdiag-disable:remark ;;
4409             -std=c99)             echo -Qstd=c99 ;;
4410             -flto)                echo -ipo ;;
4411         esac
4412     done
4413 }
4414
4415 icc_flags(){
4416     for flag; do
4417         case $flag in
4418             -flto)                echo -ipo ;;
4419             *)                    echo $flag ;;
4420         esac
4421     done
4422 }
4423
4424 suncc_flags(){
4425     for flag; do
4426         case $flag in
4427             -march=*|-mcpu=*)
4428                 case "${flag#*=}" in
4429                     native)                   echo -xtarget=native       ;;
4430                     v9|niagara)               echo -xarch=sparc          ;;
4431                     ultrasparc)               echo -xarch=sparcvis       ;;
4432                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
4433                     i586|pentium)             echo -xchip=pentium        ;;
4434                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
4435                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
4436                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
4437                     pentium4*)          echo -xtarget=pentium4           ;;
4438                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
4439                     *-sse3)             echo -xarch=sse3                 ;;
4440                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
4441                     bonnell)                   echo -xarch=ssse3         ;;
4442                     corei7|nehalem)            echo -xtarget=nehalem     ;;
4443                     westmere)                  echo -xtarget=westmere    ;;
4444                     silvermont)                echo -xarch=sse4_2        ;;
4445                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
4446                     core-avx*|ivybridge|haswell|broadwell|skylake*|knl)
4447                                                echo -xarch=avx           ;;
4448                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
4449                     btver1)                    echo -xarch=amdsse4a      ;;
4450                     btver2|bdver*|znver*)      echo -xarch=avx           ;;
4451                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
4452                     k8|opteron|athlon64|athlon-fx)
4453                                                echo -xarch=sse2a         ;;
4454                     athlon*)                   echo -xarch=pentium_proa  ;;
4455                 esac
4456                 ;;
4457             -std=c99)             echo -xc99              ;;
4458             -fomit-frame-pointer) echo -xregs=frameptr    ;;
4459             -fPIC)                echo -KPIC -xcode=pic32 ;;
4460             -W*,*)                echo $flag              ;;
4461             -f*-*|-W*|-mimpure-text)                      ;;
4462             -shared)              echo -G                 ;;
4463             *)                    echo $flag              ;;
4464         esac
4465     done
4466 }
4467
4468 probe_cc(){
4469     pfx=$1
4470     _cc=$2
4471     first=$3
4472
4473     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
4474     unset _ld_o _ldflags _ld_lib _ld_path
4475     unset _depflags _DEPCMD _DEPFLAGS
4476     _flags_filter=echo
4477
4478     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
4479         true # no-op to avoid reading stdin in following checks
4480     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
4481         _type=llvm_gcc
4482         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
4483         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
4484         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4485         _cflags_speed='-O3'
4486         _cflags_size='-Os'
4487     elif $_cc -v 2>&1 | grep -qi ^gcc; then
4488         _type=gcc
4489         gcc_version=$($_cc --version | head -n1)
4490         gcc_basever=$($_cc -dumpversion)
4491         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
4492         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
4493         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
4494         case $gcc_basever in
4495             2) ;;
4496             2.*) ;;
4497             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
4498         esac
4499         if [ "$first" = true ]; then
4500             case $gcc_basever in
4501                 4.2*)
4502                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
4503             esac
4504         fi
4505         _cflags_speed='-O3'
4506         _cflags_size='-Os'
4507     elif $_cc --version 2>/dev/null | grep -q ^icc; then
4508         _type=icc
4509         _ident=$($_cc --version | head -n1)
4510         _depflags='-MMD'
4511         _cflags_speed='-O3'
4512         _cflags_size='-Os'
4513         _cflags_noopt='-O1'
4514         _flags_filter=icc_flags
4515     elif $_cc -v 2>&1 | grep -q xlc; then
4516         _type=xlc
4517         _ident=$($_cc -qversion 2>/dev/null | head -n1)
4518         _cflags_speed='-O5'
4519         _cflags_size='-O5 -qcompact'
4520     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
4521         test -d "$sysroot" || die "No valid sysroot specified."
4522         _type=armcc
4523         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
4524         armcc_conf="$PWD/armcc.conf"
4525         $_cc --arm_linux_configure                 \
4526              --arm_linux_config_file="$armcc_conf" \
4527              --configure_sysroot="$sysroot"        \
4528              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
4529              die "Error creating armcc configuration file."
4530         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
4531         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
4532         as_default="${cross_prefix}gcc"
4533         _depflags='-MMD'
4534         _cflags_speed='-O3'
4535         _cflags_size='-Os'
4536     elif $_cc -v 2>&1 | grep -q clang && ! $_cc -? > /dev/null 2>&1; then
4537         _type=clang
4538         _ident=$($_cc --version 2>/dev/null | head -n1)
4539         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4540         _cflags_speed='-O3'
4541         _cflags_size='-Oz'
4542     elif $_cc -V 2>&1 | grep -q Sun; then
4543         _type=suncc
4544         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
4545         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
4546         _DEPFLAGS='-xM1 -xc99'
4547         _ldflags='-std=c99'
4548         _cflags_speed='-O5'
4549         _cflags_size='-O5 -xspace'
4550         _flags_filter=suncc_flags
4551     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
4552         _type=pathscale
4553         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4554         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4555         _cflags_speed='-O2'
4556         _cflags_size='-Os'
4557         _flags_filter='filter_out -Wdisabled-optimization'
4558     elif $_cc -v 2>&1 | grep -q Open64; then
4559         _type=open64
4560         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4561         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4562         _cflags_speed='-O2'
4563         _cflags_size='-Os'
4564         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
4565     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
4566         _type=armasm
4567         _ident=$($_cc | head -n1)
4568         # 4509: "This form of conditional instruction is deprecated"
4569         _flags="-nologo -ignore 4509"
4570         _flags_filter=armasm_flags
4571     elif $_cc 2>&1 | grep -q Intel; then
4572         _type=icl
4573         _ident=$($_cc 2>&1 | head -n1)
4574         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
4575         # Not only is O3 broken on 13.x+ but it is slower on all previous
4576         # versions (tested) as well.
4577         _cflags_speed="-O2"
4578         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
4579         if $_cc 2>&1 | grep -q Linker; then
4580             _ld_o='-out:$@'
4581         else
4582             _ld_o='-Fe$@'
4583         fi
4584         _cc_o='-Fo$@'
4585         _cc_e='-P'
4586         _flags_filter=icl_flags
4587         _ld_lib='lib%.a'
4588         _ld_path='-libpath:'
4589         # -Qdiag-error to make icl error when seeing certain unknown arguments
4590         _flags='-nologo -Qdiag-error:4044,10157'
4591         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
4592         # with MSVC which enables it by default.
4593         _cflags='-Qms0 -Qvec- -Qsimd- -GS -fp:precise'
4594         disable stripping
4595     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
4596         # lld can emulate multiple different linkers; in ms link.exe mode,
4597         # the -? parameter gives the help output which contains an identifyable
4598         # string, while it gives an error in other modes.
4599         _type=lld-link
4600         # The link.exe mode doesn't have a switch for getting the version,
4601         # but we can force it back to gnu mode and get the version from there.
4602         _ident=$($_cc -flavor gnu --version 2>/dev/null)
4603         _ld_o='-out:$@'
4604         _flags_filter=msvc_flags
4605         _ld_lib='lib%.a'
4606         _ld_path='-libpath:'
4607     elif $_cc -nologo- 2>&1 | grep -q Microsoft || { $_cc -v 2>&1 | grep -q clang && $_cc -? > /dev/null 2>&1; }; then
4608         _type=msvc
4609         _ident=$($_cc 2>&1 | head -n1 | tr -d '\r')
4610         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
4611         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
4612         _cflags_speed="-O2"
4613         _cflags_size="-O1"
4614         _cflags_noopt="-O1"
4615         if $_cc -nologo- 2>&1 | grep -q Linker; then
4616             _ld_o='-out:$@'
4617         else
4618             _ld_o='-Fe$@'
4619         fi
4620         _cc_o='-Fo$@'
4621         _cc_e='-P -Fi$@'
4622         _flags_filter=msvc_flags
4623         _ld_lib='lib%.a'
4624         _ld_path='-libpath:'
4625         _flags='-nologo'
4626         disable stripping
4627     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
4628         _type=cparser
4629         _ident=$($_cc --version | head -n1)
4630         _depflags='-MMD'
4631         _cflags_speed='-O4'
4632         _cflags_size='-O2'
4633         _flags_filter=cparser_flags
4634     fi
4635
4636     eval ${pfx}_type=\$_type
4637     eval ${pfx}_ident=\$_ident
4638 }
4639
4640 set_ccvars(){
4641     eval ${1}_C=\${_cc_c-\${${1}_C}}
4642     eval ${1}_E=\${_cc_e-\${${1}_E}}
4643     eval ${1}_O=\${_cc_o-\${${1}_O}}
4644
4645     if [ -n "$_depflags" ]; then
4646         eval ${1}_DEPFLAGS=\$_depflags
4647     else
4648         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
4649         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
4650         eval DEP${1}FLAGS=\$_flags
4651     fi
4652 }
4653
4654 probe_cc cc "$cc" "true"
4655 cflags_filter=$_flags_filter
4656 cflags_speed=$_cflags_speed
4657 cflags_size=$_cflags_size
4658 cflags_noopt=$_cflags_noopt
4659 add_cflags $_flags $_cflags
4660 cc_ldflags=$_ldflags
4661 set_ccvars CC
4662 set_ccvars CXX
4663
4664 probe_cc hostcc "$host_cc"
4665 host_cflags_filter=$_flags_filter
4666 host_cflags_speed=$_cflags_speed
4667 add_host_cflags  $_flags $_cflags
4668 set_ccvars HOSTCC
4669
4670 test -n "$cc_type" && enable $cc_type ||
4671     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4672
4673 : ${as_default:=$cc}
4674 : ${objcc_default:=$cc}
4675 : ${dep_cc_default:=$cc}
4676 : ${ld_default:=$cc}
4677 : ${host_ld_default:=$host_cc}
4678 set_default ar as objcc dep_cc ld ln_s host_ld windres
4679
4680 probe_cc as "$as"
4681 asflags_filter=$_flags_filter
4682 add_asflags $_flags $_cflags
4683 set_ccvars AS
4684
4685 probe_cc objcc "$objcc"
4686 objcflags_filter=$_flags_filter
4687 add_objcflags $_flags $_cflags
4688 set_ccvars OBJC
4689
4690 probe_cc ld "$ld"
4691 ldflags_filter=$_flags_filter
4692 add_ldflags $_flags $_ldflags
4693 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4694 LD_O=${_ld_o-$LD_O}
4695 LD_LIB=${_ld_lib-$LD_LIB}
4696 LD_PATH=${_ld_path-$LD_PATH}
4697
4698 probe_cc hostld "$host_ld"
4699 host_ldflags_filter=$_flags_filter
4700 add_host_ldflags $_flags $_ldflags
4701 HOSTLD_O=${_ld_o-$HOSTLD_O}
4702
4703 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4704     probe_cc depcc "$dep_cc"
4705     CCDEP=${_DEPCMD:-$DEPCMD}
4706     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4707     DEPCCFLAGS=$_flags
4708 fi
4709
4710 if $ar 2>&1 | grep -q Microsoft; then
4711     arflags="-nologo"
4712     ar_o='-out:$@'
4713 elif $ar 2>&1 | grep -q "\[D\] "; then
4714     arflags="rcD"
4715     ar_o='$@'
4716 else
4717     arflags="rc"
4718     ar_o='$@'
4719 fi
4720
4721 add_cflags $extra_cflags
4722 add_cxxflags $extra_cxxflags
4723 add_objcflags $extra_objcflags
4724 add_asflags $extra_cflags
4725
4726 if test -n "$sysroot"; then
4727     case "$cc_type" in
4728         gcc|llvm_gcc|clang)
4729             add_cppflags --sysroot="$sysroot"
4730             add_ldflags --sysroot="$sysroot"
4731         ;;
4732     esac
4733 fi
4734
4735 if test "$cpu" = host; then
4736     enabled cross_compile &&
4737         die "--cpu=host makes no sense when cross-compiling."
4738
4739     case "$cc_type" in
4740         gcc|llvm_gcc)
4741             check_native(){
4742                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4743                 sed -n "/cc1.*$1=/{
4744                             s/.*$1=\\([^ ]*\\).*/\\1/
4745                             p
4746                             q
4747                         }" $TMPE
4748             }
4749             cpu=$(check_native -march || check_native -mcpu)
4750         ;;
4751         clang)
4752             check_native(){
4753                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4754                 sed -n "/cc1.*-target-cpu /{
4755                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4756                             p
4757                             q
4758                         }" $TMPE
4759             }
4760             cpu=$(check_native -march)
4761         ;;
4762     esac
4763
4764     test "${cpu:-host}" = host &&
4765         die "--cpu=host not supported with compiler $cc"
4766 fi
4767
4768 # Deal with common $arch aliases
4769 case "$arch" in
4770     aarch64|arm64)
4771         arch="aarch64"
4772     ;;
4773     arm*|iPad*|iPhone*)
4774         arch="arm"
4775     ;;
4776     mips*|IP*)
4777         case "$arch" in
4778         *el)
4779             add_cppflags -EL
4780             add_ldflags -EL
4781         ;;
4782         *eb)
4783             add_cppflags -EB
4784             add_ldflags -EB
4785         ;;
4786         esac
4787         arch="mips"
4788     ;;
4789     parisc*|hppa*)
4790         arch="parisc"
4791     ;;
4792     "Power Macintosh"|ppc*|powerpc*)
4793         arch="ppc"
4794     ;;
4795     s390|s390x)
4796         arch="s390"
4797     ;;
4798     sh4|sh)
4799         arch="sh4"
4800     ;;
4801     sun4*|sparc*)
4802         arch="sparc"
4803     ;;
4804     tilegx|tile-gx)
4805         arch="tilegx"
4806     ;;
4807     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4808         arch="x86"
4809     ;;
4810 esac
4811
4812 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4813 enable $arch
4814
4815 # Add processor-specific flags
4816 if enabled aarch64; then
4817
4818     case $cpu in
4819         armv*)
4820             cpuflags="-march=$cpu"
4821         ;;
4822         *)
4823             cpuflags="-mcpu=$cpu"
4824         ;;
4825     esac
4826
4827 elif enabled alpha; then
4828
4829     cpuflags="-mcpu=$cpu"
4830
4831 elif enabled arm; then
4832
4833     check_arm_arch() {
4834         test_cpp_condition stddef.h \
4835             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4836             $cpuflags
4837     }
4838
4839     probe_arm_arch() {
4840         if   check_arm_arch 4;        then echo armv4
4841         elif check_arm_arch 4T;       then echo armv4t
4842         elif check_arm_arch 5;        then echo armv5
4843         elif check_arm_arch 5E;       then echo armv5e
4844         elif check_arm_arch 5T;       then echo armv5t
4845         elif check_arm_arch 5TE;      then echo armv5te
4846         elif check_arm_arch 5TEJ;     then echo armv5te
4847         elif check_arm_arch 6;        then echo armv6
4848         elif check_arm_arch 6J;       then echo armv6j
4849         elif check_arm_arch 6K;       then echo armv6k
4850         elif check_arm_arch 6Z;       then echo armv6z
4851         elif check_arm_arch 6KZ;      then echo armv6zk
4852         elif check_arm_arch 6ZK;      then echo armv6zk
4853         elif check_arm_arch 6T2;      then echo armv6t2
4854         elif check_arm_arch 7;        then echo armv7
4855         elif check_arm_arch 7A  7_A;  then echo armv7-a
4856         elif check_arm_arch 7S;       then echo armv7-a
4857         elif check_arm_arch 7R  7_R;  then echo armv7-r
4858         elif check_arm_arch 7M  7_M;  then echo armv7-m
4859         elif check_arm_arch 7EM 7E_M; then echo armv7-m
4860         elif check_arm_arch 8A  8_A;  then echo armv8-a
4861         fi
4862     }
4863
4864     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4865
4866     case $cpu in
4867         armv*)
4868             cpuflags="-march=$cpu"
4869             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4870         ;;
4871         *)
4872             cpuflags="-mcpu=$cpu"
4873             case $cpu in
4874                 cortex-a*)                               subarch=armv7a  ;;
4875                 cortex-r*)                               subarch=armv7r  ;;
4876                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4877                 arm11*)                                  subarch=armv6   ;;
4878                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4879                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4880                 *)                             subarch=$(probe_arm_arch) ;;
4881             esac
4882         ;;
4883     esac
4884
4885     case "$subarch" in
4886         armv5t*)    enable fast_clz                ;;
4887         armv[6-8]*)
4888             enable fast_clz
4889             disabled fast_unaligned || enable fast_unaligned
4890             ;;
4891     esac
4892
4893 elif enabled avr32; then
4894
4895     case $cpu in
4896         ap7[02]0[0-2])
4897             subarch="avr32_ap"
4898             cpuflags="-mpart=$cpu"
4899         ;;
4900         ap)
4901             subarch="avr32_ap"
4902             cpuflags="-march=$cpu"
4903         ;;
4904         uc3[ab]*)
4905             subarch="avr32_uc"
4906             cpuflags="-mcpu=$cpu"
4907         ;;
4908         uc)
4909             subarch="avr32_uc"
4910             cpuflags="-march=$cpu"
4911         ;;
4912     esac
4913
4914 elif enabled bfin; then
4915
4916     cpuflags="-mcpu=$cpu"
4917
4918 elif enabled mips; then
4919
4920     cpuflags="-march=$cpu"
4921
4922     if [ "$cpu" != "generic" ]; then
4923         disable mips32r2
4924         disable mips32r5
4925         disable mips64r2
4926         disable mips32r6
4927         disable mips64r6
4928         disable loongson2
4929         disable loongson3
4930
4931         case $cpu in
4932             24kc|24kf*|24kec|34kc|1004kc|24kef*|34kf*|1004kf*|74kc|74kf)
4933                 enable mips32r2
4934                 disable msa
4935             ;;
4936             p5600|i6400|p6600)
4937                 disable mipsdsp
4938                 disable mipsdspr2
4939             ;;
4940             loongson*)
4941                 enable loongson2
4942                 enable loongson3
4943                 enable local_aligned
4944                 enable simd_align_16
4945                 enable fast_64bit
4946                 enable fast_clz
4947                 enable fast_cmov
4948                 enable fast_unaligned
4949                 disable aligned_stack
4950                 disable mipsdsp
4951                 disable mipsdspr2
4952                 # When gcc version less than 5.3.0, add -fno-expensive-optimizations flag.
4953                 if [ $cc == gcc ]; then
4954                     gcc_version=$(gcc -dumpversion)
4955                     if [ "$(echo "$gcc_version 5.3.0" | tr " " "\n" | sort -rV | head -n 1)" == "$gcc_version" ]; then
4956                         expensive_optimization_flag=""
4957                     else
4958                         expensive_optimization_flag="-fno-expensive-optimizations"
4959                     fi
4960                 fi
4961                 case $cpu in
4962                     loongson3*)
4963                         cpuflags="-march=loongson3a -mhard-float $expensive_optimization_flag"
4964                     ;;
4965                     loongson2e)
4966                         cpuflags="-march=loongson2e -mhard-float $expensive_optimization_flag"
4967                     ;;
4968                     loongson2f)