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