Merge commit 'a2fc8dbae85339d1b418d296f2982b6c04c53c57'
[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 or libtls 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-libass          enable libass subtitles rendering,
222                            needed for subtitles and ass filter [no]
223   --enable-libbluray       enable BluRay reading using libbluray [no]
224   --enable-libbs2b         enable bs2b DSP library [no]
225   --enable-libcaca         enable textual display using libcaca [no]
226   --enable-libcelt         enable CELT decoding via libcelt [no]
227   --enable-libcdio         enable audio CD grabbing with libcdio [no]
228   --enable-libcodec2       enable codec2 en/decoding using libcodec2 [no]
229   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
230                            and libraw1394 [no]
231   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
232   --enable-libflite        enable flite (voice synthesis) support via libflite [no]
233   --enable-libfontconfig   enable libfontconfig, useful for drawtext filter [no]
234   --enable-libfreetype     enable libfreetype, needed for drawtext filter [no]
235   --enable-libfribidi      enable libfribidi, improves drawtext filter [no]
236   --enable-libgme          enable Game Music Emu via libgme [no]
237   --enable-libgsm          enable GSM de/encoding via libgsm [no]
238   --enable-libiec61883     enable iec61883 via libiec61883 [no]
239   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
240   --enable-libjack         enable JACK audio sound server [no]
241   --enable-libkvazaar      enable HEVC encoding via libkvazaar [no]
242   --enable-libmodplug      enable ModPlug via libmodplug [no]
243   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
244   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
245   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
246   --enable-libopencv       enable video filtering via libopencv [no]
247   --enable-libopenh264     enable H.264 encoding via OpenH264 [no]
248   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
249   --enable-libopenmpt      enable decoding tracked files via libopenmpt [no]
250   --enable-libopus         enable Opus de/encoding via libopus [no]
251   --enable-libpulse        enable Pulseaudio input via libpulse [no]
252   --enable-librsvg         enable SVG rasterization via librsvg [no]
253   --enable-librubberband   enable rubberband needed for rubberband filter [no]
254   --enable-librtmp         enable RTMP[E] support via librtmp [no]
255   --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
256   --enable-libsmbclient    enable Samba protocol via libsmbclient [no]
257   --enable-libsnappy       enable Snappy compression, needed for hap encoding [no]
258   --enable-libsoxr         enable Include libsoxr resampling [no]
259   --enable-libspeex        enable Speex de/encoding via libspeex [no]
260   --enable-libsrt          enable Haivision SRT protocol via libsrt [no]
261   --enable-libssh          enable SFTP protocol via libssh [no]
262   --enable-libtesseract    enable Tesseract, needed for ocr filter [no]
263   --enable-libtheora       enable Theora encoding via libtheora [no]
264   --enable-libtls          enable LibreSSL (via libtls), needed for https support
265                            if openssl or gnutls is not used [no]
266   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
267   --enable-libv4l2         enable libv4l2/v4l-utils [no]
268   --enable-libvidstab      enable video stabilization using vid.stab [no]
269   --enable-libvmaf         enable vmaf filter via libvmaf [no]
270   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
271   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
272                            native implementation exists [no]
273   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
274   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
275   --enable-libwebp         enable WebP encoding via libwebp [no]
276   --enable-libx264         enable H.264 encoding via x264 [no]
277   --enable-libx265         enable HEVC encoding via x265 [no]
278   --enable-libxavs         enable AVS encoding via xavs [no]
279   --enable-libxcb          enable X11 grabbing using XCB [autodetect]
280   --enable-libxcb-shm      enable X11 grabbing shm communication [autodetect]
281   --enable-libxcb-xfixes   enable X11 grabbing mouse rendering [autodetect]
282   --enable-libxcb-shape    enable X11 grabbing shape rendering [autodetect]
283   --enable-libxvid         enable Xvid encoding via xvidcore,
284                            native MPEG-4/Xvid encoder exists [no]
285   --enable-libxml2         enable XML parsing using the C library libxml2 [no]
286   --enable-libzimg         enable z.lib, needed for zscale filter [no]
287   --enable-libzmq          enable message passing via libzmq [no]
288   --enable-libzvbi         enable teletext support via libzvbi [no]
289   --enable-lv2             enable LV2 audio filtering [no]
290   --disable-lzma           disable lzma [autodetect]
291   --enable-decklink        enable Blackmagic DeckLink I/O support [no]
292   --enable-libndi_newtek   enable Newteck NDI I/O support [no]
293   --enable-mediacodec      enable Android MediaCodec support [no]
294   --enable-libmysofa       enable libmysofa, needed for sofalizer filter [no]
295   --enable-openal          enable OpenAL 1.1 capture support [no]
296   --enable-opencl          enable OpenCL processing [no]
297   --enable-opengl          enable OpenGL rendering [no]
298   --enable-openssl         enable openssl, needed for https support
299                            if gnutls or libtls is not used [no]
300   --disable-sndio          disable sndio support [autodetect]
301   --disable-schannel       disable SChannel SSP, needed for TLS support on
302                            Windows if openssl and gnutls are not used [autodetect]
303   --disable-sdl2           disable sdl2 [autodetect]
304   --disable-securetransport disable Secure Transport, needed for TLS support
305                            on OSX if openssl and gnutls are not used [autodetect]
306   --disable-xlib           disable xlib [autodetect]
307   --disable-zlib           disable zlib [autodetect]
308
309   The following libraries provide various hardware acceleration features:
310   --disable-amf            disable AMF video encoding code [autodetect]
311   --disable-audiotoolbox   disable Apple AudioToolbox code [autodetect]
312   --enable-cuda-sdk        enable CUDA features that require the CUDA SDK [no]
313   --disable-cuvid          disable Nvidia CUVID support [autodetect]
314   --disable-d3d11va        disable Microsoft Direct3D 11 video acceleration code [autodetect]
315   --disable-dxva2          disable Microsoft DirectX 9 video acceleration code [autodetect]
316   --disable-ffnvcodec      disable dynamically linked Nvidia code [autodetect]
317   --enable-libdrm          enable DRM code (Linux) [no]
318   --enable-libmfx          enable Intel MediaSDK (AKA Quick Sync Video) code via libmfx [no]
319   --enable-libnpp          enable Nvidia Performance Primitives-based code [no]
320   --enable-mmal            enable Broadcom Multi-Media Abstraction Layer (Raspberry Pi) via MMAL [no]
321   --disable-nvdec          disable Nvidia video decoding acceleration (via hwaccel) [autodetect]
322   --disable-nvenc          disable Nvidia video encoding code [autodetect]
323   --enable-omx             enable OpenMAX IL code [no]
324   --enable-omx-rpi         enable OpenMAX IL code for Raspberry Pi [no]
325   --enable-rkmpp           enable Rockchip Media Process Platform code [no]
326   --disable-v4l2-m2m       disable V4L2 mem2mem code [autodetect]
327   --disable-vaapi          disable Video Acceleration API (mainly Unix/Intel) code [autodetect]
328   --disable-vdpau          disable Nvidia Video Decode and Presentation API for Unix code [autodetect]
329   --disable-videotoolbox   disable VideoToolbox code [autodetect]
330
331 Toolchain options:
332   --arch=ARCH              select architecture [$arch]
333   --cpu=CPU                select the minimum required CPU (affects
334                            instruction selection, may crash on older CPUs)
335   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
336   --progs-suffix=SUFFIX    program name suffix []
337   --enable-cross-compile   assume a cross-compiler is used
338   --sysroot=PATH           root of cross-build tree
339   --sysinclude=PATH        location of cross-build system headers
340   --target-os=OS           compiler targets OS [$target_os]
341   --target-exec=CMD        command to run executables on target
342   --target-path=DIR        path to view of build directory on target
343   --target-samples=DIR     path to samples directory on target
344   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
345   --toolchain=NAME         set tool defaults according to NAME
346                            (gcc-asan, clang-asan, gcc-msan, clang-msan,
347                            gcc-tsan, clang-tsan, gcc-usan, clang-usan,
348                            valgrind-massif, valgrind-memcheck,
349                            msvc, icl, gcov, llvm-cov, hardened)
350   --nm=NM                  use nm tool NM [$nm_default]
351   --ar=AR                  use archive tool AR [$ar_default]
352   --as=AS                  use assembler AS [$as_default]
353   --ln_s=LN_S              use symbolic link tool LN_S [$ln_s_default]
354   --strip=STRIP            use strip tool STRIP [$strip_default]
355   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
356   --x86asmexe=EXE          use nasm-compatible assembler EXE [$x86asmexe_default]
357   --cc=CC                  use C compiler CC [$cc_default]
358   --cxx=CXX                use C compiler CXX [$cxx_default]
359   --objcc=OCC              use ObjC compiler OCC [$cc_default]
360   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
361   --nvcc=NVCC              use Nvidia CUDA compiler NVCC [$nvcc_default]
362   --ld=LD                  use linker LD [$ld_default]
363   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
364   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
365   --ranlib=RANLIB          use ranlib RANLIB [$ranlib_default]
366   --doxygen=DOXYGEN        use DOXYGEN to generate API doc [$doxygen_default]
367   --host-cc=HOSTCC         use host C compiler HOSTCC
368   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
369   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
370   --host-ld=HOSTLD         use host linker HOSTLD
371   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
372   --host-libs=HLIBS        use libs HLIBS when linking for host
373   --host-os=OS             compiler host OS [$target_os]
374   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
375   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
376   --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
377   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
378   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
379   --extra-ldsoflags=ELDFLAGS add ELDFLAGS to LDSOFLAGS [$LDSOFLAGS]
380   --extra-libs=ELIBS       add ELIBS [$ELIBS]
381   --extra-version=STRING   version string suffix []
382   --optflags=OPTFLAGS      override optimization-related compiler flags
383   --nvccflags=NVCCFLAGS    override nvcc flags [$nvccflags_default]
384   --build-suffix=SUFFIX    library name suffix []
385   --enable-pic             build position-independent code
386   --enable-thumb           compile for Thumb instruction set
387   --enable-lto             use link-time optimization
388   --env="ENV=override"     override the environment variables
389
390 Advanced options (experts only):
391   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
392   --custom-allocator=NAME  use a supported custom allocator
393   --disable-symver         disable symbol versioning
394   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
395   --disable-safe-bitstream-reader
396                            disable buffer boundary checking in bitreaders
397                            (faster, but may crash)
398   --sws-max-filter-size=N  the max filter size swscale uses [$sws_max_filter_size_default]
399
400 Optimization options (experts only):
401   --disable-asm            disable all assembly optimizations
402   --disable-altivec        disable AltiVec optimizations
403   --disable-vsx            disable VSX optimizations
404   --disable-power8         disable POWER8 optimizations
405   --disable-amd3dnow       disable 3DNow! optimizations
406   --disable-amd3dnowext    disable 3DNow! extended optimizations
407   --disable-mmx            disable MMX optimizations
408   --disable-mmxext         disable MMXEXT optimizations
409   --disable-sse            disable SSE optimizations
410   --disable-sse2           disable SSE2 optimizations
411   --disable-sse3           disable SSE3 optimizations
412   --disable-ssse3          disable SSSE3 optimizations
413   --disable-sse4           disable SSE4 optimizations
414   --disable-sse42          disable SSE4.2 optimizations
415   --disable-avx            disable AVX optimizations
416   --disable-xop            disable XOP optimizations
417   --disable-fma3           disable FMA3 optimizations
418   --disable-fma4           disable FMA4 optimizations
419   --disable-avx2           disable AVX2 optimizations
420   --disable-avx512         disable AVX-512 optimizations
421   --disable-aesni          disable AESNI optimizations
422   --disable-armv5te        disable armv5te optimizations
423   --disable-armv6          disable armv6 optimizations
424   --disable-armv6t2        disable armv6t2 optimizations
425   --disable-vfp            disable VFP optimizations
426   --disable-neon           disable NEON optimizations
427   --disable-inline-asm     disable use of inline assembly
428   --disable-x86asm         disable use of standalone x86 assembly
429   --disable-mipsdsp        disable MIPS DSP ASE R1 optimizations
430   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
431   --disable-msa            disable MSA optimizations
432   --disable-mipsfpu        disable floating point MIPS optimizations
433   --disable-mmi            disable Loongson SIMD optimizations
434   --disable-fast-unaligned consider unaligned accesses slow
435
436 Developer options (useful when working on FFmpeg itself):
437   --disable-debug          disable debugging symbols
438   --enable-debug=LEVEL     set the debug level [$debuglevel]
439   --disable-optimizations  disable compiler optimizations
440   --enable-extra-warnings  enable more compiler warnings
441   --disable-stripping      disable stripping of executables and shared libraries
442   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
443                            2 causes a slowdown at runtime.
444   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
445   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
446                            leaks and errors, using the specified valgrind binary.
447                            Cannot be combined with --target-exec
448   --enable-ftrapv          Trap arithmetic overflows
449   --samples=PATH           location of test samples for FATE, if not set use
450                            \$FATE_SAMPLES at make invocation time.
451   --enable-neon-clobber-test check NEON registers for clobbering (should be
452                            used only for debugging purposes)
453   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
454                            should be used only for debugging purposes)
455   --enable-random          randomly enable/disable components
456   --disable-random
457   --enable-random=LIST     randomly enable/disable specific components or
458   --disable-random=LIST    component groups. LIST is a comma-separated list
459                            of NAME[:PROB] entries where NAME is a component
460                            (group) and PROB the probability associated with
461                            NAME (default 0.5).
462   --random-seed=VALUE      seed value for --enable/disable-random
463   --disable-valgrind-backtrace do not print a backtrace under Valgrind
464                            (only applies to --disable-optimizations builds)
465   --enable-osfuzz          Enable building fuzzer tool
466   --libfuzzer=PATH         path to libfuzzer
467   --ignore-tests=TESTS     comma-separated list (without "fate-" prefix
468                            in the name) of tests whose result is ignored
469   --enable-linux-perf      enable Linux Performance Monitor API
470
471 NOTE: Object files are built at the place where configure is launched.
472 EOF
473   exit 0
474 }
475
476 if test -t 1 && which tput >/dev/null 2>&1; then
477     ncolors=$(tput colors)
478     if test -n "$ncolors" && test $ncolors -ge 8; then
479         bold_color=$(tput bold)
480         warn_color=$(tput setaf 3)
481         error_color=$(tput setaf 1)
482         reset_color=$(tput sgr0)
483     fi
484     # 72 used instead of 80 since that's the default of pr
485     ncols=$(tput cols)
486 fi
487 : ${ncols:=72}
488
489 log(){
490     echo "$@" >> $logfile
491 }
492
493 log_file(){
494     log BEGIN $1
495     pr -n -t $1 >> $logfile
496     log END $1
497 }
498
499 warn(){
500     log "WARNING: $*"
501     WARNINGS="${WARNINGS}WARNING: $*\n"
502 }
503
504 die(){
505     log "$@"
506     echo "$error_color$bold_color$@$reset_color"
507     cat <<EOF
508
509 If you think configure made a mistake, make sure you are using the latest
510 version from Git.  If the latest version fails, report the problem to the
511 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
512 EOF
513     if disabled logging; then
514         cat <<EOF
515 Rerun configure with logging enabled (do not use --disable-logging), and
516 include the log this produces with your report.
517 EOF
518     else
519         cat <<EOF
520 Include the log file "$logfile" produced by configure as this will help
521 solve the problem.
522 EOF
523     fi
524     exit 1
525 }
526
527 # Avoid locale weirdness, besides we really just want to translate ASCII.
528 toupper(){
529     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
530 }
531
532 tolower(){
533     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
534 }
535
536 c_escape(){
537     echo "$*" | sed 's/["\\]/\\\0/g'
538 }
539
540 sh_quote(){
541     v=$(echo "$1" | sed "s/'/'\\\\''/g")
542     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
543     echo "$v"
544 }
545
546 cleanws(){
547     echo "$@" | sed 's/^ *//;s/[[:space:]][[:space:]]*/ /g;s/ *$//'
548 }
549
550 filter(){
551     pat=$1
552     shift
553     for v; do
554         eval "case '$v' in $pat) printf '%s ' '$v' ;; esac"
555     done
556 }
557
558 filter_out(){
559     pat=$1
560     shift
561     for v; do
562         eval "case '$v' in $pat) ;; *) printf '%s ' '$v' ;; esac"
563     done
564 }
565
566 map(){
567     m=$1
568     shift
569     for v; do eval $m; done
570 }
571
572 add_suffix(){
573     suffix=$1
574     shift
575     for v; do echo ${v}${suffix}; done
576 }
577
578 remove_suffix(){
579     suffix=$1
580     shift
581     for v; do echo ${v%$suffix}; done
582 }
583
584 set_all(){
585     value=$1
586     shift
587     for var in $*; do
588         eval $var=$value
589     done
590 }
591
592 set_weak(){
593     value=$1
594     shift
595     for var; do
596         eval : \${$var:=$value}
597     done
598 }
599
600 sanitize_var_name(){
601     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
602 }
603
604 set_sanitized(){
605     var=$1
606     shift
607     eval $(sanitize_var_name "$var")='$*'
608 }
609
610 get_sanitized(){
611     eval echo \$$(sanitize_var_name "$1")
612 }
613
614 pushvar(){
615     for pvar in $*; do
616         eval level=\${${pvar}_level:=0}
617         eval ${pvar}_${level}="\$$pvar"
618         eval ${pvar}_level=$(($level+1))
619     done
620 }
621
622 popvar(){
623     for pvar in $*; do
624         eval level=\${${pvar}_level:-0}
625         test $level = 0 && continue
626         eval level=$(($level-1))
627         eval $pvar="\${${pvar}_${level}}"
628         eval ${pvar}_level=$level
629         eval unset ${pvar}_${level}
630     done
631 }
632
633 request(){
634     for var in $*; do
635         eval ${var}_requested=yes
636         eval $var=
637     done
638 }
639
640 enable(){
641     set_all yes $*
642 }
643
644 disable(){
645     set_all no $*
646 }
647
648 enable_weak(){
649     set_weak yes $*
650 }
651
652 disable_weak(){
653     set_weak no $*
654 }
655
656 enable_sanitized(){
657     for var; do
658         enable $(sanitize_var_name $var)
659     done
660 }
661
662 disable_sanitized(){
663     for var; do
664         disable $(sanitize_var_name $var)
665     done
666 }
667
668 do_enable_deep(){
669     for var; do
670         enabled $var && continue
671         eval sel="\$${var}_select"
672         eval sgs="\$${var}_suggest"
673         pushvar var sgs
674         enable_deep $sel
675         popvar sgs
676         enable_deep_weak $sgs
677         popvar var
678     done
679 }
680
681 enable_deep(){
682     do_enable_deep $*
683     enable $*
684 }
685
686 enable_deep_weak(){
687     for var; do
688         disabled $var && continue
689         pushvar var
690         do_enable_deep $var
691         popvar var
692         enable_weak $var
693     done
694 }
695
696 requested(){
697     test "${1#!}" = "$1" && op="=" || op="!="
698     eval test "x\$${1#!}_requested" $op "xyes"
699 }
700
701 enabled(){
702     test "${1#!}" = "$1" && op="=" || op="!="
703     eval test "x\$${1#!}" $op "xyes"
704 }
705
706 disabled(){
707     test "${1#!}" = "$1" && op="=" || op="!="
708     eval test "x\$${1#!}" $op "xno"
709 }
710
711 enabled_all(){
712     for opt; do
713         enabled $opt || return 1
714     done
715 }
716
717 disabled_all(){
718     for opt; do
719         disabled $opt || return 1
720     done
721 }
722
723 enabled_any(){
724     for opt; do
725         enabled $opt && return 0
726     done
727 }
728
729 disabled_any(){
730     for opt; do
731         disabled $opt && return 0
732     done
733     return 1
734 }
735
736 set_default(){
737     for opt; do
738         eval : \${$opt:=\$${opt}_default}
739     done
740 }
741
742 is_in(){
743     value=$1
744     shift
745     for var in $*; do
746         [ $var = $value ] && return 0
747     done
748     return 1
749 }
750
751 check_deps(){
752     for cfg; do
753         enabled ${cfg}_checking && die "Circular dependency for $cfg."
754         disabled ${cfg}_checking && continue
755         enable ${cfg}_checking
756
757         eval dep_all="\$${cfg}_deps"
758         eval dep_any="\$${cfg}_deps_any"
759         eval dep_con="\$${cfg}_conflict"
760         eval dep_sel="\$${cfg}_select"
761         eval dep_sgs="\$${cfg}_suggest"
762         eval dep_ifa="\$${cfg}_if"
763         eval dep_ifn="\$${cfg}_if_any"
764
765         pushvar cfg dep_all dep_any dep_con dep_sel dep_sgs dep_ifa dep_ifn
766         check_deps $dep_all $dep_any $dep_con $dep_sel $dep_sgs $dep_ifa $dep_ifn
767         popvar cfg dep_all dep_any dep_con dep_sel dep_sgs dep_ifa dep_ifn
768
769         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
770         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
771         enabled_all  $dep_all || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but not all dependencies are satisfied: $dep_all"; }
772         enabled_any  $dep_any || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but not any dependency is satisfied: $dep_any"; }
773         disabled_all $dep_con || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but some conflicting dependencies are unsatisfied: $dep_con"; }
774         disabled_any $dep_sel && { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but some selected dependency is unsatisfied: $dep_sel"; }
775
776         enabled $cfg && enable_deep_weak $dep_sel $dep_sgs
777
778         for dep in $dep_all $dep_any $dep_sel $dep_sgs; do
779             # filter out library deps, these do not belong in extralibs
780             is_in $dep $LIBRARY_LIST && continue
781             enabled $dep && eval append ${cfg}_extralibs ${dep}_extralibs
782         done
783
784         disable ${cfg}_checking
785     done
786 }
787
788 print_config(){
789     pfx=$1
790     files=$2
791     shift 2
792     map 'eval echo "$v \${$v:-no}"' "$@" |
793     awk "BEGIN { split(\"$files\", files) }
794         {
795             c = \"$pfx\" toupper(\$1);
796             v = \$2;
797             sub(/yes/, 1, v);
798             sub(/no/,  0, v);
799             for (f in files) {
800                 file = files[f];
801                 if (file ~ /\\.h\$/) {
802                     printf(\"#define %s %d\\n\", c, v) >>file;
803                 } else if (file ~ /\\.asm\$/) {
804                     printf(\"%%define %s %d\\n\", c, v) >>file;
805                 } else if (file ~ /\\.mak\$/) {
806                     n = -v ? \"\" : \"!\";
807                     printf(\"%s%s=yes\\n\", n, c) >>file;
808                 } else if (file ~ /\\.texi\$/) {
809                     pre = -v ? \"\" : \"@c \";
810                     yesno = \$2;
811                     c2 = tolower(c);
812                     gsub(/_/, \"-\", c2);
813                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
814                 }
815             }
816         }"
817 }
818
819 print_enabled(){
820     suf=$1
821     shift
822     for v; do
823         enabled $v && printf "%s\n" ${v%$suf}
824     done
825 }
826
827 append(){
828     var=$1
829     shift
830     eval "$var=\"\$$var $*\""
831 }
832
833 prepend(){
834     var=$1
835     shift
836     eval "$var=\"$* \$$var\""
837 }
838
839 unique(){
840     var=$1
841     uniq_list=""
842     for tok in $(eval echo \$$var); do
843         uniq_list="$(filter_out $tok $uniq_list) $tok"
844     done
845     eval "$var=\"${uniq_list}\""
846 }
847
848 resolve(){
849     var=$1
850     tmpvar=
851     for entry in $(eval echo \$$var); do
852         tmpvar="$tmpvar $(eval echo \$${entry})"
853     done
854     eval "$var=\"${tmpvar}\""
855 }
856
857 add_cppflags(){
858     append CPPFLAGS "$@"
859 }
860
861 add_cflags(){
862     append CFLAGS $($cflags_filter "$@")
863 }
864
865 add_cflags_headers(){
866     append CFLAGS_HEADERS $($cflags_filter "$@")
867 }
868
869 add_cxxflags(){
870     append CXXFLAGS $($cflags_filter "$@")
871 }
872
873 add_asflags(){
874     append ASFLAGS $($asflags_filter "$@")
875 }
876
877 add_objcflags(){
878     append OBJCFLAGS $($objcflags_filter "$@")
879 }
880
881 add_ldflags(){
882     append LDFLAGS $($ldflags_filter "$@")
883 }
884
885 add_ldexeflags(){
886     append LDEXEFLAGS $($ldflags_filter "$@")
887 }
888
889 add_ldsoflags(){
890     append LDSOFLAGS $($ldflags_filter "$@")
891 }
892
893 add_stripflags(){
894     append ASMSTRIPFLAGS "$@"
895 }
896
897 add_extralibs(){
898     prepend extralibs $($ldflags_filter "$@")
899 }
900
901 add_host_cppflags(){
902     append host_cppflags "$@"
903 }
904
905 add_host_cflags(){
906     append host_cflags $($host_cflags_filter "$@")
907 }
908
909 add_host_ldflags(){
910     append host_ldflags $($host_ldflags_filter "$@")
911 }
912
913 add_compat(){
914     append compat_objs $1
915     shift
916     map 'add_cppflags -D$v' "$@"
917 }
918
919 test_cmd(){
920     log "$@"
921     "$@" >> $logfile 2>&1
922 }
923
924 test_stat(){
925     log test_stat "$@"
926     stat "$1" >> $logfile 2>&1
927 }
928
929 cc_o(){
930     eval printf '%s\\n' $CC_O
931 }
932
933 cc_e(){
934     eval printf '%s\\n' $CC_E
935 }
936
937 test_cc(){
938     log test_cc "$@"
939     cat > $TMPC
940     log_file $TMPC
941     test_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
942 }
943
944 test_cxx(){
945     log test_cxx "$@"
946     cat > $TMPCPP
947     log_file $TMPCPP
948     test_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
949 }
950
951 test_objcc(){
952     log test_objcc "$@"
953     cat > $TMPM
954     log_file $TMPM
955     test_cmd $objcc -Werror=missing-prototypes $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPM
956 }
957
958 test_cpp(){
959     log test_cpp "$@"
960     cat > $TMPC
961     log_file $TMPC
962     test_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
963 }
964
965 as_o(){
966     eval printf '%s\\n' $AS_O
967 }
968
969 test_as(){
970     log test_as "$@"
971     cat > $TMPS
972     log_file $TMPS
973     test_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
974 }
975
976 x86asm_o(){
977     eval printf '%s\\n' $X86ASM_O
978 }
979
980 test_x86asm(){
981     log test_x86asm "$@"
982     echo "$1" > $TMPASM
983     log_file $TMPASM
984     shift
985     test_cmd $x86asmexe $X86ASMFLAGS -Werror "$@" $(x86asm_o $TMPO) $TMPASM
986 }
987
988 check_cmd(){
989     log check_cmd "$@"
990     cmd=$1
991     disabled $cmd && return
992     disable $cmd
993     test_cmd $@ && enable $cmd
994 }
995
996 check_as(){
997     log check_as "$@"
998     name=$1
999     code=$2
1000     shift 2
1001     disable $name
1002     test_as $@ <<EOF && enable $name
1003 $code
1004 EOF
1005 }
1006
1007 check_inline_asm(){
1008     log check_inline_asm "$@"
1009     name="$1"
1010     code="$2"
1011     shift 2
1012     disable $name
1013     test_cc "$@" <<EOF && enable $name
1014 void foo(void){ __asm__ volatile($code); }
1015 EOF
1016 }
1017
1018 check_inline_asm_flags(){
1019     log check_inline_asm_flags "$@"
1020     name="$1"
1021     code="$2"
1022     flags=''
1023     shift 2
1024     while [ "$1" != "" ]; do
1025       append flags $1
1026       shift
1027     done;
1028     disable $name
1029     cat > $TMPC <<EOF
1030 void foo(void){ __asm__ volatile($code); }
1031 EOF
1032     log_file $TMPC
1033     test_cmd $cc $CPPFLAGS $CFLAGS $flags "$@" $CC_C $(cc_o $TMPO) $TMPC &&
1034     enable $name && add_cflags $flags && add_asflags $flags && add_ldflags $flags
1035 }
1036
1037 check_insn(){
1038     log check_insn "$@"
1039     check_inline_asm ${1}_inline "$2"
1040     check_as ${1}_external "$2"
1041 }
1042
1043 check_x86asm(){
1044     log check_x86asm "$@"
1045     name=$1
1046     shift
1047     disable $name
1048     test_x86asm "$@" && enable $name
1049 }
1050
1051 ld_o(){
1052     eval printf '%s\\n' $LD_O
1053 }
1054
1055 test_ld(){
1056     log test_ld "$@"
1057     type=$1
1058     shift 1
1059     flags=$(filter_out '-l*|*.so' $@)
1060     libs=$(filter '-l*|*.so' $@)
1061     test_$type $($cflags_filter $flags) || return
1062     flags=$($ldflags_filter $flags)
1063     libs=$($ldflags_filter $libs)
1064     test_cmd $ld $LDFLAGS $LDEXEFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
1065 }
1066
1067 check_ld(){
1068     log check_ld "$@"
1069     type=$1
1070     name=$2
1071     shift 2
1072     disable $name
1073     test_ld $type $@ && enable $name
1074 }
1075
1076 print_include(){
1077     hdr=$1
1078     test "${hdr%.h}" = "${hdr}" &&
1079         echo "#include $hdr"    ||
1080         echo "#include <$hdr>"
1081 }
1082
1083 test_code(){
1084     log test_code "$@"
1085     check=$1
1086     headers=$2
1087     code=$3
1088     shift 3
1089     {
1090         for hdr in $headers; do
1091             print_include $hdr
1092         done
1093         echo "int main(void) { $code; return 0; }"
1094     } | test_$check "$@"
1095 }
1096
1097 check_cppflags(){
1098     log check_cppflags "$@"
1099     test_cpp "$@" <<EOF && append CPPFLAGS "$@"
1100 #include <stdlib.h>
1101 EOF
1102 }
1103
1104 test_cflags(){
1105     log test_cflags "$@"
1106     set -- $($cflags_filter "$@")
1107     test_cc "$@" <<EOF
1108 int x;
1109 EOF
1110 }
1111
1112 check_cflags(){
1113     log check_cflags "$@"
1114     test_cflags "$@" && add_cflags "$@"
1115 }
1116
1117 check_cxxflags(){
1118     log check_cxxflags "$@"
1119     set -- $($cflags_filter "$@")
1120     test_cxx "$@" <<EOF && append CXXFLAGS "$@"
1121 int x;
1122 EOF
1123 }
1124
1125 test_objcflags(){
1126     log test_objcflags "$@"
1127     set -- $($objcflags_filter "$@")
1128     test_objcc "$@" <<EOF
1129 int x;
1130 EOF
1131 }
1132
1133 check_objcflags(){
1134     log check_objcflags "$@"
1135     test_objcflags "$@" && add_objcflags "$@"
1136 }
1137
1138 test_ldflags(){
1139     log test_ldflags "$@"
1140     set -- $($ldflags_filter "$@")
1141     test_ld "cc" "$@" <<EOF
1142 int main(void){ return 0; }
1143 EOF
1144 }
1145
1146 check_ldflags(){
1147     log check_ldflags "$@"
1148     test_ldflags "$@" && add_ldflags "$@"
1149 }
1150
1151 test_stripflags(){
1152     log test_stripflags "$@"
1153     # call test_cc to get a fresh TMPO
1154     test_cc <<EOF
1155 int main(void) { return 0; }
1156 EOF
1157     test_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
1158 }
1159
1160 check_stripflags(){
1161     log check_stripflags "$@"
1162     test_stripflags "$@" && add_stripflags "$@"
1163 }
1164
1165 check_header(){
1166     log check_header "$@"
1167     headers=$1
1168     shift
1169     disable_sanitized $headers
1170     {
1171         for hdr in $headers; do
1172             print_include $hdr
1173         done
1174         echo "int x;"
1175     } | test_cpp "$@" && enable_sanitized $headers
1176 }
1177
1178 check_header_objcc(){
1179     log check_header_objcc "$@"
1180     rm -f -- "$TMPO"
1181     header=$1
1182     shift
1183     disable_sanitized $header
1184     {
1185        echo "#include <$header>"
1186        echo "int main(void) { return 0; }"
1187     } | test_objcc && test_stat "$TMPO" && enable_sanitized $header
1188 }
1189
1190 check_apple_framework(){
1191     log check_apple_framework "$@"
1192     framework="$1"
1193     name="$(tolower $framework)"
1194     header="${framework}/${framework}.h"
1195     disable $name
1196     check_header_objcc $header &&
1197         enable $name && eval ${name}_extralibs='"-framework $framework"'
1198 }
1199
1200 check_func(){
1201     log check_func "$@"
1202     func=$1
1203     shift
1204     disable $func
1205     test_ld "cc" "$@" <<EOF && enable $func
1206 extern int $func();
1207 int main(void){ $func(); }
1208 EOF
1209 }
1210
1211 check_complexfunc(){
1212     log check_complexfunc "$@"
1213     func=$1
1214     narg=$2
1215     shift 2
1216     test $narg = 2 && args="f, g" || args="f * I"
1217     disable $func
1218     test_ld "cc" "$@" <<EOF && enable $func
1219 #include <complex.h>
1220 #include <math.h>
1221 float foo(complex float f, complex float g) { return $func($args); }
1222 int main(void){ return (int) foo; }
1223 EOF
1224 }
1225
1226 check_mathfunc(){
1227     log check_mathfunc "$@"
1228     func=$1
1229     narg=$2
1230     shift 2
1231     test $narg = 2 && args="f, g" || args="f"
1232     disable $func
1233     test_ld "cc" "$@" <<EOF && enable $func
1234 #include <math.h>
1235 float foo(float f, float g) { return $func($args); }
1236 int main(void){ return (int) foo; }
1237 EOF
1238 }
1239
1240 check_func_headers(){
1241     log check_func_headers "$@"
1242     headers=$1
1243     funcs=$2
1244     shift 2
1245     {
1246         for hdr in $headers; do
1247             print_include $hdr
1248         done
1249         echo "#include <stdint.h>"
1250         for func in $funcs; do
1251             echo "long check_$func(void) { return (long) $func; }"
1252         done
1253         echo "int main(void) { int ret = 0;"
1254         # LTO could optimize out the test functions without this
1255         for func in $funcs; do
1256             echo " ret |= ((intptr_t)check_$func) & 0xFFFF;"
1257         done
1258         echo "return ret; }"
1259     } | test_ld "cc" "$@" && enable $funcs && enable_sanitized $headers
1260 }
1261
1262 check_class_headers_cpp(){
1263     log check_class_headers_cpp "$@"
1264     headers=$1
1265     classes=$2
1266     shift 2
1267     {
1268         for hdr in $headers; do
1269             echo "#include <$hdr>"
1270         done
1271         echo "int main(void) { "
1272         i=1
1273         for class in $classes; do
1274             echo "$class obj$i;"
1275             i=$(expr $i + 1)
1276         done
1277         echo "return 0; }"
1278     } | test_ld "cxx" "$@" && enable $funcs && enable_sanitized $headers
1279 }
1280
1281 test_cpp_condition(){
1282     log test_cpp_condition "$@"
1283     header=$1
1284     condition=$2
1285     shift 2
1286     test_cpp "$@" <<EOF
1287 #include <$header>
1288 #if !($condition)
1289 #error "unsatisfied condition: $condition"
1290 #endif
1291 EOF
1292 }
1293
1294 check_cpp_condition(){
1295     log check_cpp_condition "$@"
1296     name=$1
1297     shift 1
1298     disable $name
1299     test_cpp_condition "$@" && enable $name
1300 }
1301
1302 test_cflags_cc(){
1303     log test_cflags_cc "$@"
1304     flags=$1
1305     header=$2
1306     condition=$3
1307     shift 3
1308     set -- $($cflags_filter "$flags")
1309     test_cc "$@" <<EOF
1310 #include <$header>
1311 #if !($condition)
1312 #error "unsatisfied condition: $condition"
1313 #endif
1314 EOF
1315 }
1316
1317 check_lib(){
1318     log check_lib "$@"
1319     name="$1"
1320     headers="$2"
1321     funcs="$3"
1322     shift 3
1323     disable $name
1324     check_func_headers "$headers" "$funcs" "$@" &&
1325         enable $name && eval ${name}_extralibs="\$@"
1326 }
1327
1328 check_lib_cpp(){
1329     log check_lib_cpp "$@"
1330     name="$1"
1331     headers="$2"
1332     classes="$3"
1333     shift 3
1334     disable $name
1335     check_class_headers_cpp "$headers" "$classes" "$@" &&
1336         enable $name && eval ${name}_extralibs="\$@"
1337 }
1338
1339 test_pkg_config(){
1340     log test_pkg_config "$@"
1341     name="$1"
1342     pkg_version="$2"
1343     pkg="${2%% *}"
1344     headers="$3"
1345     funcs="$4"
1346     shift 4
1347     disable $name
1348     test_cmd $pkg_config --exists --print-errors $pkg_version || return
1349     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1350     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1351     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1352         enable $name &&
1353         set_sanitized "${name}_cflags"    $pkg_cflags &&
1354         set_sanitized "${name}_extralibs" $pkg_libs
1355 }
1356
1357 check_pkg_config(){
1358     log check_pkg_config "$@"
1359     name="$1"
1360     test_pkg_config "$@" &&
1361         eval add_cflags \$${name}_cflags
1362 }
1363
1364 test_exec(){
1365     test_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1366 }
1367
1368 check_exec_crash(){
1369     log check_exec_crash "$@"
1370     code=$(cat)
1371
1372     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1373     # are safe but may not be available everywhere.  Thus we use
1374     # raise(SIGTERM) instead.  The check is run in a subshell so we
1375     # can redirect the "Terminated" message from the shell.  SIGBUS
1376     # is not defined by standard C so it is used conditionally.
1377
1378     (test_exec "$@") >> $logfile 2>&1 <<EOF
1379 #include <signal.h>
1380 static void sighandler(int sig){
1381     raise(SIGTERM);
1382 }
1383 int foo(void){
1384     $code
1385 }
1386 int (*func_ptr)(void) = foo;
1387 int main(void){
1388     signal(SIGILL, sighandler);
1389     signal(SIGFPE, sighandler);
1390     signal(SIGSEGV, sighandler);
1391 #ifdef SIGBUS
1392     signal(SIGBUS, sighandler);
1393 #endif
1394     return func_ptr();
1395 }
1396 EOF
1397 }
1398
1399 check_type(){
1400     log check_type "$@"
1401     headers=$1
1402     type=$2
1403     shift 2
1404     disable_sanitized "$type"
1405     test_code cc "$headers" "$type v" "$@" && enable_sanitized "$type"
1406 }
1407
1408 check_struct(){
1409     log check_struct "$@"
1410     headers=$1
1411     struct=$2
1412     member=$3
1413     shift 3
1414     disable_sanitized "${struct}_${member}"
1415     test_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1416         enable_sanitized "${struct}_${member}"
1417 }
1418
1419 check_builtin(){
1420     log check_builtin "$@"
1421     name=$1
1422     headers=$2
1423     builtin=$3
1424     shift 3
1425     disable "$name"
1426     test_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1427 }
1428
1429 check_compile_assert(){
1430     log check_compile_assert "$@"
1431     name=$1
1432     headers=$2
1433     condition=$3
1434     shift 3
1435     disable "$name"
1436     test_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1437 }
1438
1439 check_cc(){
1440     log check_cc "$@"
1441     name=$1
1442     shift
1443     disable "$name"
1444     test_code cc "$@" && enable "$name"
1445 }
1446
1447 require(){
1448     log require "$@"
1449     name_version="$1"
1450     name="${1%% *}"
1451     shift
1452     check_lib $name "$@" || die "ERROR: $name_version not found"
1453 }
1454
1455 require_cc(){
1456     log require_cc "$@"
1457     name="$1"
1458     shift
1459     test_code cc "$@" || die "ERROR: $name failed"
1460 }
1461
1462 require_cpp(){
1463     name="$1"
1464     headers="$2"
1465     classes="$3"
1466     shift 3
1467     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1468 }
1469
1470 require_header(){
1471     log require_header "$@"
1472     headers="$1"
1473     check_header "$@" || die "ERROR: $headers not found"
1474 }
1475
1476 require_cpp_condition(){
1477     log require_cpp_condition "$@"
1478     condition="$2"
1479     test_cpp_condition "$@" || die "ERROR: $condition not satisfied"
1480 }
1481
1482 require_pkg_config(){
1483     log require_pkg_config "$@"
1484     pkg_version="$2"
1485     check_pkg_config "$@" || die "ERROR: $pkg_version not found using pkg-config$pkg_config_fail_message"
1486 }
1487
1488 hostcc_e(){
1489     eval printf '%s\\n' $HOSTCC_E
1490 }
1491
1492 hostcc_o(){
1493     eval printf '%s\\n' $HOSTCC_O
1494 }
1495
1496 test_host_cc(){
1497     log test_host_cc "$@"
1498     cat > $TMPC
1499     log_file $TMPC
1500     test_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1501 }
1502
1503 test_host_cpp(){
1504     log test_host_cpp "$@"
1505     cat > $TMPC
1506     log_file $TMPC
1507     test_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1508 }
1509
1510 check_host_cppflags(){
1511     log check_host_cppflags "$@"
1512     test_host_cpp "$@" <<EOF && append host_cppflags "$@"
1513 #include <stdlib.h>
1514 EOF
1515 }
1516
1517 check_host_cflags(){
1518     log check_host_cflags "$@"
1519     set -- $($host_cflags_filter "$@")
1520     test_host_cc "$@" <<EOF && append host_cflags "$@"
1521 int x;
1522 EOF
1523 }
1524
1525 test_host_cpp_condition(){
1526     log test_host_cpp_condition "$@"
1527     header=$1
1528     condition=$2
1529     shift 2
1530     test_host_cpp "$@" <<EOF
1531 #include <$header>
1532 #if !($condition)
1533 #error "unsatisfied condition: $condition"
1534 #endif
1535 EOF
1536 }
1537
1538 check_host_cpp_condition(){
1539     log check_host_cpp_condition "$@"
1540     name=$1
1541     shift 1
1542     disable $name
1543     test_host_cpp_condition "$@" && enable $name
1544 }
1545
1546 cp_if_changed(){
1547     cmp -s "$1" "$2" && { test "$quiet" != "yes" && echo "$2 is unchanged"; } && return
1548     mkdir -p "$(dirname $2)"
1549     cp -f "$1" "$2"
1550 }
1551
1552 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1553 # system-dependent things.
1554
1555 AVCODEC_COMPONENTS="
1556     bsfs
1557     decoders
1558     encoders
1559     hwaccels
1560     parsers
1561 "
1562
1563 AVDEVICE_COMPONENTS="
1564     indevs
1565     outdevs
1566 "
1567
1568 AVFILTER_COMPONENTS="
1569     filters
1570 "
1571
1572 AVFORMAT_COMPONENTS="
1573     demuxers
1574     muxers
1575     protocols
1576 "
1577
1578 COMPONENT_LIST="
1579     $AVCODEC_COMPONENTS
1580     $AVDEVICE_COMPONENTS
1581     $AVFILTER_COMPONENTS
1582     $AVFORMAT_COMPONENTS
1583 "
1584
1585 EXAMPLE_LIST="
1586     avio_dir_cmd_example
1587     avio_reading_example
1588     decode_audio_example
1589     decode_video_example
1590     demuxing_decoding_example
1591     encode_audio_example
1592     encode_video_example
1593     extract_mvs_example
1594     filter_audio_example
1595     filtering_audio_example
1596     filtering_video_example
1597     http_multiclient_example
1598     hw_decode_example
1599     metadata_example
1600     muxing_example
1601     qsvdec_example
1602     remuxing_example
1603     resampling_audio_example
1604     scaling_video_example
1605     transcode_aac_example
1606     transcoding_example
1607     vaapi_encode_example
1608     vaapi_transcode_example
1609 "
1610
1611 EXTERNAL_AUTODETECT_LIBRARY_LIST="
1612     alsa
1613     appkit
1614     avfoundation
1615     bzlib
1616     coreimage
1617     iconv
1618     libxcb
1619     libxcb_shm
1620     libxcb_shape
1621     libxcb_xfixes
1622     lzma
1623     schannel
1624     sdl2
1625     securetransport
1626     sndio
1627     xlib
1628     zlib
1629 "
1630
1631 EXTERNAL_LIBRARY_GPL_LIST="
1632     avisynth
1633     frei0r
1634     libcdio
1635     librubberband
1636     libvidstab
1637     libx264
1638     libx265
1639     libxavs
1640     libxvid
1641 "
1642
1643 EXTERNAL_LIBRARY_NONFREE_LIST="
1644     decklink
1645     libndi_newtek
1646     libfdk_aac
1647     openssl
1648     libtls
1649 "
1650
1651 EXTERNAL_LIBRARY_VERSION3_LIST="
1652     gmp
1653     libopencore_amrnb
1654     libopencore_amrwb
1655     libvmaf
1656     libvo_amrwbenc
1657     rkmpp
1658 "
1659
1660 EXTERNAL_LIBRARY_GPLV3_LIST="
1661     libsmbclient
1662 "
1663
1664 EXTERNAL_LIBRARY_LIST="
1665     $EXTERNAL_LIBRARY_GPL_LIST
1666     $EXTERNAL_LIBRARY_NONFREE_LIST
1667     $EXTERNAL_LIBRARY_VERSION3_LIST
1668     $EXTERNAL_LIBRARY_GPLV3_LIST
1669     chromaprint
1670     gcrypt
1671     gnutls
1672     jni
1673     ladspa
1674     libaom
1675     libass
1676     libbluray
1677     libbs2b
1678     libcaca
1679     libcelt
1680     libcodec2
1681     libdc1394
1682     libdrm
1683     libflite
1684     libfontconfig
1685     libfreetype
1686     libfribidi
1687     libgme
1688     libgsm
1689     libiec61883
1690     libilbc
1691     libjack
1692     libkvazaar
1693     libmodplug
1694     libmp3lame
1695     libmysofa
1696     libopencv
1697     libopenh264
1698     libopenjpeg
1699     libopenmpt
1700     libopus
1701     libpulse
1702     librsvg
1703     librtmp
1704     libshine
1705     libsmbclient
1706     libsnappy
1707     libsoxr
1708     libspeex
1709     libsrt
1710     libssh
1711     libtesseract
1712     libtheora
1713     libtwolame
1714     libv4l2
1715     libvorbis
1716     libvpx
1717     libwavpack
1718     libwebp
1719     libxml2
1720     libzimg
1721     libzmq
1722     libzvbi
1723     lv2
1724     mediacodec
1725     openal
1726     opengl
1727 "
1728
1729 HWACCEL_AUTODETECT_LIBRARY_LIST="
1730     amf
1731     audiotoolbox
1732     crystalhd
1733     cuda
1734     cuvid
1735     d3d11va
1736     dxva2
1737     ffnvcodec
1738     nvdec
1739     nvenc
1740     vaapi
1741     vdpau
1742     videotoolbox
1743     v4l2_m2m
1744     xvmc
1745 "
1746
1747 # catchall list of things that require external libs to link
1748 EXTRALIBS_LIST="
1749     cpu_init
1750     cws2fws
1751 "
1752
1753 HWACCEL_LIBRARY_NONFREE_LIST="
1754     cuda_sdk
1755     libnpp
1756 "
1757
1758 HWACCEL_LIBRARY_LIST="
1759     $HWACCEL_LIBRARY_NONFREE_LIST
1760     libmfx
1761     mmal
1762     omx
1763     opencl
1764 "
1765
1766 DOCUMENT_LIST="
1767     doc
1768     htmlpages
1769     manpages
1770     podpages
1771     txtpages
1772 "
1773
1774 FEATURE_LIST="
1775     ftrapv
1776     gray
1777     hardcoded_tables
1778     omx_rpi
1779     runtime_cpudetect
1780     safe_bitstream_reader
1781     shared
1782     small
1783     static
1784     swscale_alpha
1785 "
1786
1787 LIBRARY_LIST="
1788     avcodec
1789     avdevice
1790     avfilter
1791     avformat
1792     avresample
1793     avutil
1794     postproc
1795     swresample
1796     swscale
1797 "
1798
1799 LICENSE_LIST="
1800     gpl
1801     nonfree
1802     version3
1803 "
1804
1805 PROGRAM_LIST="
1806     ffplay
1807     ffprobe
1808     ffmpeg
1809 "
1810
1811 SUBSYSTEM_LIST="
1812     dct
1813     dwt
1814     error_resilience
1815     faan
1816     fast_unaligned
1817     fft
1818     lsp
1819     lzo
1820     mdct
1821     pixelutils
1822     network
1823     rdft
1824 "
1825
1826 # COMPONENT_LIST needs to come last to ensure correct dependency checking
1827 CONFIG_LIST="
1828     $DOCUMENT_LIST
1829     $EXAMPLE_LIST
1830     $EXTERNAL_LIBRARY_LIST
1831     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1832     $HWACCEL_LIBRARY_LIST
1833     $HWACCEL_AUTODETECT_LIBRARY_LIST
1834     $FEATURE_LIST
1835     $LICENSE_LIST
1836     $LIBRARY_LIST
1837     $PROGRAM_LIST
1838     $SUBSYSTEM_LIST
1839     autodetect
1840     fontconfig
1841     linux_perf
1842     memory_poisoning
1843     neon_clobber_test
1844     ossfuzz
1845     pic
1846     thumb
1847     valgrind_backtrace
1848     xmm_clobber_test
1849     $COMPONENT_LIST
1850 "
1851
1852 THREADS_LIST="
1853     pthreads
1854     os2threads
1855     w32threads
1856 "
1857
1858 ATOMICS_LIST="
1859     atomics_gcc
1860     atomics_suncc
1861     atomics_win32
1862 "
1863
1864 AUTODETECT_LIBS="
1865     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1866     $HWACCEL_AUTODETECT_LIBRARY_LIST
1867     $THREADS_LIST
1868 "
1869
1870 ARCH_LIST="
1871     aarch64
1872     alpha
1873     arm
1874     avr32
1875     avr32_ap
1876     avr32_uc
1877     bfin
1878     ia64
1879     m68k
1880     mips
1881     mips64
1882     parisc
1883     ppc
1884     ppc64
1885     s390
1886     sh4
1887     sparc
1888     sparc64
1889     tilegx
1890     tilepro
1891     tomi
1892     x86
1893     x86_32
1894     x86_64
1895 "
1896
1897 ARCH_EXT_LIST_ARM="
1898     armv5te
1899     armv6
1900     armv6t2
1901     armv8
1902     neon
1903     vfp
1904     vfpv3
1905     setend
1906 "
1907
1908 ARCH_EXT_LIST_MIPS="
1909     mipsfpu
1910     mips32r2
1911     mips32r5
1912     mips64r2
1913     mips32r6
1914     mips64r6
1915     mipsdsp
1916     mipsdspr2
1917     msa
1918 "
1919
1920 ARCH_EXT_LIST_LOONGSON="
1921     loongson2
1922     loongson3
1923     mmi
1924 "
1925
1926 ARCH_EXT_LIST_X86_SIMD="
1927     aesni
1928     amd3dnow
1929     amd3dnowext
1930     avx
1931     avx2
1932     avx512
1933     fma3
1934     fma4
1935     mmx
1936     mmxext
1937     sse
1938     sse2
1939     sse3
1940     sse4
1941     sse42
1942     ssse3
1943     xop
1944 "
1945
1946 ARCH_EXT_LIST_PPC="
1947     altivec
1948     dcbzl
1949     ldbrx
1950     power8
1951     ppc4xx
1952     vsx
1953 "
1954
1955 ARCH_EXT_LIST_X86="
1956     $ARCH_EXT_LIST_X86_SIMD
1957     cpunop
1958     i686
1959 "
1960
1961 ARCH_EXT_LIST="
1962     $ARCH_EXT_LIST_ARM
1963     $ARCH_EXT_LIST_PPC
1964     $ARCH_EXT_LIST_X86
1965     $ARCH_EXT_LIST_MIPS
1966     $ARCH_EXT_LIST_LOONGSON
1967 "
1968
1969 ARCH_FEATURES="
1970     aligned_stack
1971     fast_64bit
1972     fast_clz
1973     fast_cmov
1974     local_aligned
1975     simd_align_16
1976     simd_align_32
1977     simd_align_64
1978 "
1979
1980 BUILTIN_LIST="
1981     atomic_cas_ptr
1982     machine_rw_barrier
1983     MemoryBarrier
1984     mm_empty
1985     rdtsc
1986     sem_timedwait
1987     sync_val_compare_and_swap
1988 "
1989 HAVE_LIST_CMDLINE="
1990     inline_asm
1991     symver
1992     x86asm
1993 "
1994
1995 HAVE_LIST_PUB="
1996     bigendian
1997     fast_unaligned
1998 "
1999
2000 HEADERS_LIST="
2001     arpa_inet_h
2002     asm_types_h
2003     cdio_paranoia_h
2004     cdio_paranoia_paranoia_h
2005     cuda_h
2006     dispatch_dispatch_h
2007     dev_bktr_ioctl_bt848_h
2008     dev_bktr_ioctl_meteor_h
2009     dev_ic_bt8xx_h
2010     dev_video_bktr_ioctl_bt848_h
2011     dev_video_meteor_ioctl_meteor_h
2012     direct_h
2013     dirent_h
2014     dxgidebug_h
2015     dxva_h
2016     ES2_gl_h
2017     gsm_h
2018     io_h
2019     machine_ioctl_bt848_h
2020     machine_ioctl_meteor_h
2021     malloc_h
2022     opencv2_core_core_c_h
2023     OpenGL_gl3_h
2024     poll_h
2025     sys_param_h
2026     sys_resource_h
2027     sys_select_h
2028     sys_soundcard_h
2029     sys_time_h
2030     sys_un_h
2031     sys_videoio_h
2032     termios_h
2033     udplite_h
2034     unistd_h
2035     valgrind_valgrind_h
2036     windows_h
2037     winsock2_h
2038 "
2039
2040 INTRINSICS_LIST="
2041     intrinsics_neon
2042 "
2043
2044 COMPLEX_FUNCS="
2045     cabs
2046     cexp
2047 "
2048
2049 MATH_FUNCS="
2050     atanf
2051     atan2f
2052     cbrt
2053     cbrtf
2054     copysign
2055     cosf
2056     erf
2057     exp2
2058     exp2f
2059     expf
2060     hypot
2061     isfinite
2062     isinf
2063     isnan
2064     ldexpf
2065     llrint
2066     llrintf
2067     log2
2068     log2f
2069     log10f
2070     lrint
2071     lrintf
2072     powf
2073     rint
2074     round
2075     roundf
2076     sinf
2077     trunc
2078     truncf
2079 "
2080
2081 SYSTEM_FEATURES="
2082     dos_paths
2083     libc_msvcrt
2084     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
2085     section_data_rel_ro
2086     threads
2087     uwp
2088     winrt
2089 "
2090
2091 SYSTEM_FUNCS="
2092     access
2093     aligned_malloc
2094     arc4random
2095     clock_gettime
2096     closesocket
2097     CommandLineToArgvW
2098     fcntl
2099     getaddrinfo
2100     gethrtime
2101     getopt
2102     GetProcessAffinityMask
2103     GetProcessMemoryInfo
2104     GetProcessTimes
2105     getrusage
2106     GetSystemTimeAsFileTime
2107     gettimeofday
2108     glob
2109     glXGetProcAddress
2110     gmtime_r
2111     inet_aton
2112     isatty
2113     kbhit
2114     localtime_r
2115     lstat
2116     lzo1x_999_compress
2117     mach_absolute_time
2118     MapViewOfFile
2119     memalign
2120     mkstemp
2121     mmap
2122     mprotect
2123     nanosleep
2124     PeekNamedPipe
2125     posix_memalign
2126     pthread_cancel
2127     sched_getaffinity
2128     SecItemImport
2129     SetConsoleTextAttribute
2130     SetConsoleCtrlHandler
2131     setmode
2132     setrlimit
2133     Sleep
2134     strerror_r
2135     sysconf
2136     sysctl
2137     usleep
2138     UTGetOSTypeFromString
2139     VirtualAlloc
2140     wglGetProcAddress
2141 "
2142
2143 SYSTEM_LIBRARIES="
2144     vaapi_drm
2145     vaapi_x11
2146     vdpau_x11
2147     wincrypt
2148 "
2149
2150 TOOLCHAIN_FEATURES="
2151     as_arch_directive
2152     as_fpu_directive
2153     as_func
2154     as_object_arch
2155     asm_mod_q
2156     blocks_extension
2157     ebp_available
2158     ebx_available
2159     gnu_as
2160     gnu_windres
2161     ibm_asm
2162     inline_asm_direct_symbol_refs
2163     inline_asm_labels
2164     inline_asm_nonlocal_labels
2165     pragma_deprecated
2166     rsync_contimeout
2167     symver_asm_label
2168     symver_gnu_asm
2169     vfp_args
2170     xform_asm
2171     xmm_clobbers
2172 "
2173
2174 TYPES_LIST="
2175     kCMVideoCodecType_HEVC
2176     socklen_t
2177     struct_addrinfo
2178     struct_group_source_req
2179     struct_ip_mreq_source
2180     struct_ipv6_mreq
2181     struct_msghdr_msg_flags
2182     struct_pollfd
2183     struct_rusage_ru_maxrss
2184     struct_sctp_event_subscribe
2185     struct_sockaddr_in6
2186     struct_sockaddr_sa_len
2187     struct_sockaddr_storage
2188     struct_stat_st_mtim_tv_nsec
2189     struct_v4l2_frmivalenum_discrete
2190 "
2191
2192 HAVE_LIST="
2193     $ARCH_EXT_LIST
2194     $(add_suffix _external $ARCH_EXT_LIST)
2195     $(add_suffix _inline   $ARCH_EXT_LIST)
2196     $ARCH_FEATURES
2197     $BUILTIN_LIST
2198     $COMPLEX_FUNCS
2199     $HAVE_LIST_CMDLINE
2200     $HAVE_LIST_PUB
2201     $HEADERS_LIST
2202     $INTRINSICS_LIST
2203     $MATH_FUNCS
2204     $SYSTEM_FEATURES
2205     $SYSTEM_FUNCS
2206     $SYSTEM_LIBRARIES
2207     $THREADS_LIST
2208     $TOOLCHAIN_FEATURES
2209     $TYPES_LIST
2210     makeinfo
2211     makeinfo_html
2212     opencl_d3d11
2213     opencl_drm_arm
2214     opencl_drm_beignet
2215     opencl_dxva2
2216     opencl_vaapi_beignet
2217     opencl_vaapi_intel_media
2218     perl
2219     pod2man
2220     texi2html
2221 "
2222
2223 # options emitted with CONFIG_ prefix but not available on the command line
2224 CONFIG_EXTRA="
2225     aandcttables
2226     ac3dsp
2227     adts_header
2228     audio_frame_queue
2229     audiodsp
2230     blockdsp
2231     bswapdsp
2232     cabac
2233     cbs
2234     cbs_h264
2235     cbs_h265
2236     cbs_mpeg2
2237     dirac_parse
2238     dvprofile
2239     exif
2240     faandct
2241     faanidct
2242     fdctdsp
2243     flacdsp
2244     fmtconvert
2245     frame_thread_encoder
2246     g722dsp
2247     golomb
2248     gplv3
2249     h263dsp
2250     h264chroma
2251     h264dsp
2252     h264parse
2253     h264pred
2254     h264qpel
2255     hevcparse
2256     hpeldsp
2257     huffman
2258     huffyuvdsp
2259     huffyuvencdsp
2260     idctdsp
2261     iirfilter
2262     mdct15
2263     intrax8
2264     iso_media
2265     ividsp
2266     jpegtables
2267     lgplv3
2268     libx262
2269     llauddsp
2270     llviddsp
2271     llvidencdsp
2272     lpc
2273     lzf
2274     me_cmp
2275     mpeg_er
2276     mpegaudio
2277     mpegaudiodsp
2278     mpegaudioheader
2279     mpegvideo
2280     mpegvideoenc
2281     mss34dsp
2282     pixblockdsp
2283     qpeldsp
2284     qsv
2285     qsvdec
2286     qsvenc
2287     qsvvpp
2288     rangecoder
2289     riffdec
2290     riffenc
2291     rtpdec
2292     rtpenc_chain
2293     rv34dsp
2294     sinewin
2295     snappy
2296     srtp
2297     startcode
2298     texturedsp
2299     texturedspenc
2300     tpeldsp
2301     vaapi_1
2302     vaapi_encode
2303     vc1dsp
2304     videodsp
2305     vp3dsp
2306     vp56dsp
2307     vp8dsp
2308     wma_freqs
2309     wmv2dsp
2310 "
2311
2312 CMDLINE_SELECT="
2313     $ARCH_EXT_LIST
2314     $CONFIG_LIST
2315     $HAVE_LIST_CMDLINE
2316     $THREADS_LIST
2317     asm
2318     cross_compile
2319     debug
2320     extra_warnings
2321     logging
2322     lto
2323     optimizations
2324     rpath
2325     stripping
2326 "
2327
2328 PATHS_LIST="
2329     bindir
2330     datadir
2331     docdir
2332     incdir
2333     libdir
2334     mandir
2335     pkgconfigdir
2336     prefix
2337     shlibdir
2338     install_name_dir
2339 "
2340
2341 CMDLINE_SET="
2342     $PATHS_LIST
2343     ar
2344     arch
2345     as
2346     assert_level
2347     build_suffix
2348     cc
2349     objcc
2350     cpu
2351     cross_prefix
2352     custom_allocator
2353     cxx
2354     dep_cc
2355     doxygen
2356     env
2357     extra_version
2358     gas
2359     host_cc
2360     host_cflags
2361     host_extralibs
2362     host_ld
2363     host_ldflags
2364     host_os
2365     ignore_tests
2366     install
2367     ld
2368     ln_s
2369     logfile
2370     malloc_prefix
2371     nm
2372     optflags
2373     nvccflags
2374     pkg_config
2375     pkg_config_flags
2376     progs_suffix
2377     random_seed
2378     ranlib
2379     samples
2380     strip
2381     sws_max_filter_size
2382     sysinclude
2383     sysroot
2384     target_exec
2385     target_os
2386     target_path
2387     target_samples
2388     tempprefix
2389     toolchain
2390     valgrind
2391     x86asmexe
2392 "
2393
2394 CMDLINE_APPEND="
2395     extra_cflags
2396     extra_cxxflags
2397     extra_objcflags
2398     host_cppflags
2399 "
2400
2401 # code dependency declarations
2402
2403 # architecture extensions
2404
2405 armv5te_deps="arm"
2406 armv6_deps="arm"
2407 armv6t2_deps="arm"
2408 armv8_deps="aarch64"
2409 neon_deps_any="aarch64 arm"
2410 intrinsics_neon_deps="neon"
2411 vfp_deps_any="aarch64 arm"
2412 vfpv3_deps="vfp"
2413 setend_deps="arm"
2414
2415 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2416
2417 altivec_deps="ppc"
2418 dcbzl_deps="ppc"
2419 ldbrx_deps="ppc"
2420 ppc4xx_deps="ppc"
2421 vsx_deps="altivec"
2422 power8_deps="vsx"
2423
2424 loongson2_deps="mips"
2425 loongson3_deps="mips"
2426 mips32r2_deps="mips"
2427 mips32r5_deps="mips"
2428 mips32r6_deps="mips"
2429 mips64r2_deps="mips"
2430 mips64r6_deps="mips"
2431 mipsfpu_deps="mips"
2432 mipsdsp_deps="mips"
2433 mipsdspr2_deps="mips"
2434 mmi_deps="mips"
2435 msa_deps="mipsfpu"
2436
2437 cpunop_deps="i686"
2438 x86_64_select="i686"
2439 x86_64_suggest="fast_cmov"
2440
2441 amd3dnow_deps="mmx"
2442 amd3dnowext_deps="amd3dnow"
2443 i686_deps="x86"
2444 mmx_deps="x86"
2445 mmxext_deps="mmx"
2446 sse_deps="mmxext"
2447 sse2_deps="sse"
2448 sse3_deps="sse2"
2449 ssse3_deps="sse3"
2450 sse4_deps="ssse3"
2451 sse42_deps="sse4"
2452 aesni_deps="sse42"
2453 avx_deps="sse42"
2454 xop_deps="avx"
2455 fma3_deps="avx"
2456 fma4_deps="avx"
2457 avx2_deps="avx"
2458 avx512_deps="avx2"
2459
2460 mmx_external_deps="x86asm"
2461 mmx_inline_deps="inline_asm x86"
2462 mmx_suggest="mmx_external mmx_inline"
2463
2464 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2465     eval dep=\$${ext}_deps
2466     eval ${ext}_external_deps='"${dep}_external"'
2467     eval ${ext}_inline_deps='"${dep}_inline"'
2468     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2469 done
2470
2471 aligned_stack_if_any="aarch64 ppc x86"
2472 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2473 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2474 fast_unaligned_if_any="aarch64 ppc x86"
2475 simd_align_16_if_any="altivec neon sse"
2476 simd_align_32_if_any="avx"
2477 simd_align_64_if_any="avx512"
2478
2479 # system capabilities
2480 symver_if_any="symver_asm_label symver_gnu_asm"
2481 valgrind_backtrace_conflict="optimizations"
2482 valgrind_backtrace_deps="valgrind_valgrind_h"
2483
2484 # threading support
2485 atomics_gcc_if="sync_val_compare_and_swap"
2486 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2487 atomics_win32_if="MemoryBarrier"
2488 atomics_native_if_any="$ATOMICS_LIST"
2489 w32threads_deps="atomics_native"
2490 threads_if_any="$THREADS_LIST"
2491
2492 # subsystems
2493 cbs_h264_select="cbs golomb"
2494 cbs_h265_select="cbs golomb"
2495 cbs_mpeg2_select="cbs"
2496 dct_select="rdft"
2497 dirac_parse_select="golomb"
2498 error_resilience_select="me_cmp"
2499 faandct_deps="faan"
2500 faandct_select="fdctdsp"
2501 faanidct_deps="faan"
2502 faanidct_select="idctdsp"
2503 h264dsp_select="startcode"
2504 hevcparse_select="golomb"
2505 frame_thread_encoder_deps="encoders threads"
2506 intrax8_select="blockdsp idctdsp"
2507 mdct_select="fft"
2508 mdct15_select="fft"
2509 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2510 mpeg_er_select="error_resilience"
2511 mpegaudio_select="mpegaudiodsp mpegaudioheader"
2512 mpegaudiodsp_select="dct"
2513 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2514 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
2515 vc1dsp_select="h264chroma qpeldsp startcode"
2516 rdft_select="fft"
2517
2518 # decoders / encoders
2519 aac_decoder_select="adts_header mdct15 mdct sinewin"
2520 aac_fixed_decoder_select="adts_header mdct sinewin"
2521 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2522 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2523 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2524 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2525 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2526 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2527 adpcm_g722_decoder_select="g722dsp"
2528 adpcm_g722_encoder_select="g722dsp"
2529 aic_decoder_select="golomb idctdsp"
2530 alac_encoder_select="lpc"
2531 als_decoder_select="bswapdsp"
2532 amrnb_decoder_select="lsp"
2533 amrwb_decoder_select="lsp"
2534 amv_decoder_select="sp5x_decoder exif"
2535 amv_encoder_select="aandcttables jpegtables mpegvideoenc"
2536 ape_decoder_select="bswapdsp llauddsp"
2537 apng_decoder_deps="zlib"
2538 apng_encoder_deps="zlib"
2539 apng_encoder_select="llvidencdsp"
2540 aptx_decoder_select="audio_frame_queue"
2541 aptx_encoder_select="audio_frame_queue"
2542 aptx_hd_decoder_select="audio_frame_queue"
2543 aptx_hd_encoder_select="audio_frame_queue"
2544 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2545 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2546 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2547 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2548 atrac1_decoder_select="mdct sinewin"
2549 atrac3_decoder_select="mdct"
2550 atrac3p_decoder_select="mdct sinewin"
2551 avrn_decoder_select="exif jpegtables"
2552 bink_decoder_select="blockdsp hpeldsp"
2553 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2554 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2555 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2556 clearvideo_decoder_select="idctdsp"
2557 cllc_decoder_select="bswapdsp"
2558 comfortnoise_encoder_select="lpc"
2559 cook_decoder_select="audiodsp mdct sinewin"
2560 cscd_decoder_select="lzo"
2561 cscd_decoder_suggest="zlib"
2562 dca_decoder_select="mdct"
2563 dds_decoder_select="texturedsp"
2564 dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
2565 dnxhd_decoder_select="blockdsp idctdsp"
2566 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2567 dolby_e_decoder_select="mdct"
2568 dvvideo_decoder_select="dvprofile idctdsp"
2569 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2570 dxa_decoder_deps="zlib"
2571 dxv_decoder_select="lzf texturedsp"
2572 eac3_decoder_select="ac3_decoder"
2573 eac3_encoder_select="ac3_encoder"
2574 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2575 eatgq_decoder_select="aandcttables"
2576 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2577 exr_decoder_deps="zlib"
2578 ffv1_decoder_select="rangecoder"
2579 ffv1_encoder_select="rangecoder"
2580 ffvhuff_decoder_select="huffyuv_decoder"
2581 ffvhuff_encoder_select="huffyuv_encoder"
2582 fic_decoder_select="golomb"
2583 flac_decoder_select="flacdsp"
2584 flac_encoder_select="bswapdsp flacdsp lpc"
2585 flashsv2_decoder_deps="zlib"
2586 flashsv2_encoder_deps="zlib"
2587 flashsv_decoder_deps="zlib"
2588 flashsv_encoder_deps="zlib"
2589 flv_decoder_select="h263_decoder"
2590 flv_encoder_select="h263_encoder"
2591 fourxm_decoder_select="blockdsp bswapdsp"
2592 fraps_decoder_select="bswapdsp huffman"
2593 g2m_decoder_deps="zlib"
2594 g2m_decoder_select="blockdsp idctdsp jpegtables"
2595 g729_decoder_select="audiodsp"
2596 h261_decoder_select="mpegvideo"
2597 h261_encoder_select="aandcttables mpegvideoenc"
2598 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2599 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2600 h263i_decoder_select="h263_decoder"
2601 h263p_decoder_select="h263_decoder"
2602 h263p_encoder_select="h263_encoder"
2603 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
2604 h264_decoder_suggest="error_resilience"
2605 hap_decoder_select="snappy texturedsp"
2606 hap_encoder_deps="libsnappy"
2607 hap_encoder_select="texturedspenc"
2608 hevc_decoder_select="bswapdsp cabac golomb hevcparse videodsp"
2609 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2610 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llvidencdsp"
2611 iac_decoder_select="imc_decoder"
2612 imc_decoder_select="bswapdsp fft mdct sinewin"
2613 indeo3_decoder_select="hpeldsp"
2614 indeo4_decoder_select="ividsp"
2615 indeo5_decoder_select="ividsp"
2616 interplay_video_decoder_select="hpeldsp"
2617 jpegls_decoder_select="mjpeg_decoder"
2618 jv_decoder_select="blockdsp"
2619 lagarith_decoder_select="llviddsp"
2620 ljpeg_encoder_select="aandcttables idctdsp jpegtables mpegvideoenc"
2621 magicyuv_decoder_select="llviddsp"
2622 magicyuv_encoder_select="llvidencdsp"
2623 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2624 metasound_decoder_select="lsp mdct sinewin"
2625 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2626 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2627 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2628 mjpegb_decoder_select="mjpeg_decoder"
2629 mlp_decoder_select="mlp_parser"
2630 mlp_encoder_select="lpc"
2631 motionpixels_decoder_select="bswapdsp"
2632 mp1_decoder_select="mpegaudio"
2633 mp1float_decoder_select="mpegaudio"
2634 mp2_decoder_select="mpegaudio"
2635 mp2float_decoder_select="mpegaudio"
2636 mp3_decoder_select="mpegaudio"
2637 mp3adu_decoder_select="mpegaudio"
2638 mp3adufloat_decoder_select="mpegaudio"
2639 mp3float_decoder_select="mpegaudio"
2640 mp3on4_decoder_select="mpegaudio"
2641 mp3on4float_decoder_select="mpegaudio"
2642 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2643 mpc8_decoder_select="mpegaudiodsp"
2644 mpegvideo_decoder_select="mpegvideo"
2645 mpeg1video_decoder_select="mpegvideo"
2646 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2647 mpeg2video_decoder_select="mpegvideo"
2648 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2649 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2650 mpeg4_encoder_select="h263_encoder"
2651 msa1_decoder_select="mss34dsp"
2652 mscc_decoder_deps="zlib"
2653 msmpeg4v1_decoder_select="h263_decoder"
2654 msmpeg4v2_decoder_select="h263_decoder"
2655 msmpeg4v2_encoder_select="h263_encoder"
2656 msmpeg4v3_decoder_select="h263_decoder"
2657 msmpeg4v3_encoder_select="h263_encoder"
2658 mss2_decoder_select="mpegvideo qpeldsp vc1_decoder"
2659 mts2_decoder_select="mss34dsp"
2660 mxpeg_decoder_select="mjpeg_decoder"
2661 nellymoser_decoder_select="mdct sinewin"
2662 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2663 nuv_decoder_select="idctdsp lzo"
2664 on2avc_decoder_select="mdct"
2665 opus_decoder_deps="swresample"
2666 opus_decoder_select="mdct15"
2667 opus_encoder_select="audio_frame_queue mdct15"
2668 png_decoder_deps="zlib"
2669 png_encoder_deps="zlib"
2670 png_encoder_select="llvidencdsp"
2671 prores_decoder_select="blockdsp idctdsp"
2672 prores_encoder_select="fdctdsp"
2673 qcelp_decoder_select="lsp"
2674 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2675 ra_144_decoder_select="audiodsp"
2676 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2677 ralf_decoder_select="golomb"
2678 rawvideo_decoder_select="bswapdsp"
2679 rscc_decoder_deps="zlib"
2680 rtjpeg_decoder_select="me_cmp"
2681 rv10_decoder_select="h263_decoder"
2682 rv10_encoder_select="h263_encoder"
2683 rv20_decoder_select="h263_decoder"
2684 rv20_encoder_select="h263_encoder"
2685 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2686 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2687 screenpresso_decoder_deps="zlib"
2688 shorten_decoder_select="bswapdsp"
2689 sipr_decoder_select="lsp"
2690 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2691 snow_encoder_select="aandcttables dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2692 sonic_decoder_select="golomb rangecoder"
2693 sonic_encoder_select="golomb rangecoder"
2694 sonic_ls_encoder_select="golomb rangecoder"
2695 sp5x_decoder_select="mjpeg_decoder"
2696 srgc_decoder_deps="zlib"
2697 svq1_decoder_select="hpeldsp"
2698 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2699 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2700 svq3_decoder_suggest="zlib"
2701 tak_decoder_select="audiodsp"
2702 tdsc_decoder_deps="zlib"
2703 tdsc_decoder_select="mjpeg_decoder"
2704 theora_decoder_select="vp3_decoder"
2705 thp_decoder_select="mjpeg_decoder"
2706 tiff_decoder_suggest="zlib lzma"
2707 tiff_encoder_suggest="zlib"
2708 truehd_decoder_select="mlp_parser"
2709 truehd_encoder_select="lpc"
2710 truemotion2_decoder_select="bswapdsp"
2711 truespeech_decoder_select="bswapdsp"
2712 tscc_decoder_deps="zlib"
2713 twinvq_decoder_select="mdct lsp sinewin"
2714 txd_decoder_select="texturedsp"
2715 utvideo_decoder_select="bswapdsp llviddsp"
2716 utvideo_encoder_select="bswapdsp huffman llvidencdsp"
2717 vble_decoder_select="llviddsp"
2718 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 mpegvideo vc1dsp"
2719 vc1image_decoder_select="vc1_decoder"
2720 vorbis_decoder_select="mdct"
2721 vorbis_encoder_select="audio_frame_queue mdct"
2722 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2723 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2724 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2725 vp6a_decoder_select="vp6_decoder"
2726 vp6f_decoder_select="vp6_decoder"
2727 vp7_decoder_select="h264pred videodsp vp8dsp"
2728 vp8_decoder_select="h264pred videodsp vp8dsp"
2729 vp9_decoder_select="videodsp vp9_parser vp9_superframe_split_bsf"
2730 webp_decoder_select="vp8_decoder exif"
2731 wmalossless_decoder_select="llauddsp"
2732 wmapro_decoder_select="mdct sinewin wma_freqs"
2733 wmav1_decoder_select="mdct sinewin wma_freqs"
2734 wmav1_encoder_select="mdct sinewin wma_freqs"
2735 wmav2_decoder_select="mdct sinewin wma_freqs"
2736 wmav2_encoder_select="mdct sinewin wma_freqs"
2737 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2738 wmv1_decoder_select="h263_decoder"
2739 wmv1_encoder_select="h263_encoder"
2740 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2741 wmv2_encoder_select="h263_encoder wmv2dsp"
2742 wmv3_decoder_select="vc1_decoder"
2743 wmv3image_decoder_select="wmv3_decoder"
2744 xma1_decoder_select="wmapro_decoder"
2745 xma2_decoder_select="wmapro_decoder"
2746 zerocodec_decoder_deps="zlib"
2747 zlib_decoder_deps="zlib"
2748 zlib_encoder_deps="zlib"
2749 zmbv_decoder_deps="zlib"
2750 zmbv_encoder_deps="zlib"
2751
2752 # hardware accelerators
2753 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2754 cuda_deps="ffnvcodec"
2755 cuvid_deps="ffnvcodec"
2756 d3d11va_deps="dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2757 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode ole32 user32"
2758 ffnvcodec_deps_any="libdl LoadLibrary"
2759 nvdec_deps="ffnvcodec"
2760 videotoolbox_hwaccel_deps="videotoolbox pthreads"
2761 videotoolbox_hwaccel_extralibs="-framework QuartzCore"
2762 xvmc_deps="X11_extensions_XvMClib_h"
2763
2764 h263_vaapi_hwaccel_deps="vaapi"
2765 h263_vaapi_hwaccel_select="h263_decoder"
2766 h263_videotoolbox_hwaccel_deps="videotoolbox"
2767 h263_videotoolbox_hwaccel_select="h263_decoder"
2768 h264_d3d11va_hwaccel_deps="d3d11va"
2769 h264_d3d11va_hwaccel_select="h264_decoder"
2770 h264_d3d11va2_hwaccel_deps="d3d11va"
2771 h264_d3d11va2_hwaccel_select="h264_decoder"
2772 h264_dxva2_hwaccel_deps="dxva2"
2773 h264_dxva2_hwaccel_select="h264_decoder"
2774 h264_nvdec_hwaccel_deps="nvdec"
2775 h264_nvdec_hwaccel_select="h264_decoder"
2776 h264_vaapi_hwaccel_deps="vaapi"
2777 h264_vaapi_hwaccel_select="h264_decoder"
2778 h264_vdpau_hwaccel_deps="vdpau"
2779 h264_vdpau_hwaccel_select="h264_decoder"
2780 h264_videotoolbox_hwaccel_deps="videotoolbox"
2781 h264_videotoolbox_hwaccel_select="h264_decoder"
2782 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2783 hevc_d3d11va_hwaccel_select="hevc_decoder"
2784 hevc_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2785 hevc_d3d11va2_hwaccel_select="hevc_decoder"
2786 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2787 hevc_dxva2_hwaccel_select="hevc_decoder"
2788 hevc_nvdec_hwaccel_deps="nvdec"
2789 hevc_nvdec_hwaccel_select="hevc_decoder"
2790 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2791 hevc_vaapi_hwaccel_select="hevc_decoder"
2792 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2793 hevc_vdpau_hwaccel_select="hevc_decoder"
2794 hevc_videotoolbox_hwaccel_deps="videotoolbox"
2795 hevc_videotoolbox_hwaccel_select="hevc_decoder"
2796 mjpeg_nvdec_hwaccel_deps="nvdec"
2797 mjpeg_nvdec_hwaccel_select="mjpeg_decoder"
2798 mjpeg_vaapi_hwaccel_deps="vaapi"
2799 mjpeg_vaapi_hwaccel_select="mjpeg_decoder"
2800 mpeg_xvmc_hwaccel_deps="xvmc"
2801 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2802 mpeg1_nvdec_hwaccel_deps="nvdec"
2803 mpeg1_nvdec_hwaccel_select="mpeg1video_decoder"
2804 mpeg1_vdpau_hwaccel_deps="vdpau"
2805 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2806 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2807 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2808 mpeg1_xvmc_hwaccel_deps="xvmc"
2809 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2810 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2811 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2812 mpeg2_d3d11va2_hwaccel_deps="d3d11va"
2813 mpeg2_d3d11va2_hwaccel_select="mpeg2video_decoder"
2814 mpeg2_dxva2_hwaccel_deps="dxva2"
2815 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2816 mpeg2_nvdec_hwaccel_deps="nvdec"
2817 mpeg2_nvdec_hwaccel_select="mpeg2video_decoder"
2818 mpeg2_vaapi_hwaccel_deps="vaapi"
2819 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2820 mpeg2_vdpau_hwaccel_deps="vdpau"
2821 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2822 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2823 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2824 mpeg2_xvmc_hwaccel_deps="xvmc"
2825 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2826 mpeg4_nvdec_hwaccel_deps="nvdec"
2827 mpeg4_nvdec_hwaccel_select="mpeg4_decoder"
2828 mpeg4_vaapi_hwaccel_deps="vaapi"
2829 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2830 mpeg4_vdpau_hwaccel_deps="vdpau"
2831 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2832 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2833 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2834 vc1_d3d11va_hwaccel_deps="d3d11va"
2835 vc1_d3d11va_hwaccel_select="vc1_decoder"
2836 vc1_d3d11va2_hwaccel_deps="d3d11va"
2837 vc1_d3d11va2_hwaccel_select="vc1_decoder"
2838 vc1_dxva2_hwaccel_deps="dxva2"
2839 vc1_dxva2_hwaccel_select="vc1_decoder"
2840 vc1_nvdec_hwaccel_deps="nvdec"
2841 vc1_nvdec_hwaccel_select="vc1_decoder"
2842 vc1_vaapi_hwaccel_deps="vaapi"
2843 vc1_vaapi_hwaccel_select="vc1_decoder"
2844 vc1_vdpau_hwaccel_deps="vdpau"
2845 vc1_vdpau_hwaccel_select="vc1_decoder"
2846 vp8_nvdec_hwaccel_deps="nvdec"
2847 vp8_nvdec_hwaccel_select="vp8_decoder"
2848 vp8_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferVP8"
2849 vp8_vaapi_hwaccel_select="vp8_decoder"
2850 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2851 vp9_d3d11va_hwaccel_select="vp9_decoder"
2852 vp9_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2853 vp9_d3d11va2_hwaccel_select="vp9_decoder"
2854 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
2855 vp9_dxva2_hwaccel_select="vp9_decoder"
2856 vp9_nvdec_hwaccel_deps="nvdec"
2857 vp9_nvdec_hwaccel_select="vp9_decoder"
2858 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9_bit_depth"
2859 vp9_vaapi_hwaccel_select="vp9_decoder"
2860 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2861 wmv3_d3d11va2_hwaccel_select="vc1_d3d11va2_hwaccel"
2862 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2863 wmv3_nvdec_hwaccel_select="vc1_nvdec_hwaccel"
2864 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2865 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2866
2867 # hardware-accelerated codecs
2868 omx_deps="libdl pthreads"
2869 omx_rpi_select="omx"
2870 qsv_deps="libmfx"
2871 qsvdec_select="qsv"
2872 qsvenc_select="qsv"
2873 qsvvpp_select="qsv"
2874 vaapi_encode_deps="vaapi"
2875 v4l2_m2m_deps_any="linux_videodev2_h"
2876
2877 hwupload_cuda_filter_deps="ffnvcodec"
2878 scale_npp_filter_deps="ffnvcodec libnpp"
2879 scale_cuda_filter_deps="cuda_sdk"
2880 thumbnail_cuda_filter_deps="cuda_sdk"
2881
2882 amf_deps_any="libdl LoadLibrary"
2883 nvenc_deps="ffnvcodec"
2884 nvenc_deps_any="libdl LoadLibrary"
2885 nvenc_encoder_deps="nvenc"
2886
2887 h263_v4l2m2m_decoder_deps="v4l2_m2m h263_v4l2_m2m"
2888 h263_v4l2m2m_encoder_deps="v4l2_m2m h263_v4l2_m2m"
2889 h264_amf_encoder_deps="amf"
2890 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2891 h264_cuvid_decoder_deps="cuvid"
2892 h264_cuvid_decoder_select="h264_mp4toannexb_bsf"
2893 h264_mediacodec_decoder_deps="mediacodec"
2894 h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
2895 h264_mmal_decoder_deps="mmal"
2896 h264_nvenc_encoder_deps="nvenc"
2897 h264_omx_encoder_deps="omx"
2898 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec"
2899 h264_qsv_encoder_select="qsvenc"
2900 h264_rkmpp_decoder_deps="rkmpp"
2901 h264_rkmpp_decoder_select="h264_mp4toannexb_bsf"
2902 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2903 h264_vaapi_encoder_select="cbs_h264 vaapi_encode"
2904 h264_v4l2m2m_decoder_deps="v4l2_m2m h264_v4l2_m2m"
2905 h264_v4l2m2m_encoder_deps="v4l2_m2m h264_v4l2_m2m"
2906 hevc_amf_encoder_deps="amf"
2907 hevc_cuvid_decoder_deps="cuvid"
2908 hevc_cuvid_decoder_select="hevc_mp4toannexb_bsf"
2909 hevc_mediacodec_decoder_deps="mediacodec"
2910 hevc_mediacodec_decoder_select="hevc_mp4toannexb_bsf hevc_parser"
2911 hevc_nvenc_encoder_deps="nvenc"
2912 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec"
2913 hevc_qsv_encoder_select="hevcparse qsvenc"
2914 hevc_rkmpp_decoder_deps="rkmpp"
2915 hevc_rkmpp_decoder_select="hevc_mp4toannexb_bsf"
2916 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2917 hevc_vaapi_encoder_select="cbs_h265 vaapi_encode"
2918 hevc_v4l2m2m_decoder_deps="v4l2_m2m hevc_v4l2_m2m"
2919 hevc_v4l2m2m_encoder_deps="v4l2_m2m hevc_v4l2_m2m"
2920 mjpeg_cuvid_decoder_deps="cuvid"
2921 mjpeg_qsv_encoder_deps="libmfx"
2922 mjpeg_qsv_encoder_select="qsvenc"
2923 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2924 mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
2925 mpeg1_cuvid_decoder_deps="cuvid"
2926 mpeg1_v4l2m2m_decoder_deps="v4l2_m2m mpeg1_v4l2_m2m"
2927 mpeg2_crystalhd_decoder_select="crystalhd"
2928 mpeg2_cuvid_decoder_deps="cuvid"
2929 mpeg2_mmal_decoder_deps="mmal"
2930 mpeg2_mediacodec_decoder_deps="mediacodec"
2931 mpeg2_qsv_decoder_select="qsvdec mpegvideo_parser"
2932 mpeg2_qsv_encoder_select="qsvenc"
2933 mpeg2_vaapi_encoder_deps="VAEncPictureParameterBufferMPEG2"
2934 mpeg2_vaapi_encoder_select="cbs_mpeg2 vaapi_encode"
2935 mpeg2_v4l2m2m_decoder_deps="v4l2_m2m mpeg2_v4l2_m2m"
2936 mpeg4_crystalhd_decoder_select="crystalhd"
2937 mpeg4_cuvid_decoder_deps="cuvid"
2938 mpeg4_mediacodec_decoder_deps="mediacodec"
2939 mpeg4_mmal_decoder_deps="mmal"
2940 mpeg4_omx_encoder_deps="omx"
2941 mpeg4_v4l2m2m_decoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
2942 mpeg4_v4l2m2m_encoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
2943 msmpeg4_crystalhd_decoder_select="crystalhd"
2944 nvenc_h264_encoder_select="h264_nvenc_encoder"
2945 nvenc_hevc_encoder_select="hevc_nvenc_encoder"
2946 vc1_crystalhd_decoder_select="crystalhd"
2947 vc1_cuvid_decoder_deps="cuvid"
2948 vc1_mmal_decoder_deps="mmal"
2949 vc1_qsv_decoder_select="qsvdec vc1_parser"
2950 vc1_v4l2m2m_decoder_deps="v4l2_m2m vc1_v4l2_m2m"
2951 vp8_cuvid_decoder_deps="cuvid"
2952 vp8_mediacodec_decoder_deps="mediacodec"
2953 vp8_qsv_decoder_select="qsvdec vp8_parser"
2954 vp8_rkmpp_decoder_deps="rkmpp"
2955 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
2956 vp8_vaapi_encoder_select="vaapi_encode"
2957 vp8_v4l2m2m_decoder_deps="v4l2_m2m vp8_v4l2_m2m"
2958 vp8_v4l2m2m_encoder_deps="v4l2_m2m vp8_v4l2_m2m"
2959 vp9_cuvid_decoder_deps="cuvid"
2960 vp9_mediacodec_decoder_deps="mediacodec"
2961 vp9_rkmpp_decoder_deps="rkmpp"
2962 vp9_vaapi_encoder_deps="VAEncPictureParameterBufferVP9"
2963 vp9_vaapi_encoder_select="vaapi_encode"
2964 vp9_v4l2m2m_decoder_deps="v4l2_m2m vp9_v4l2_m2m"
2965 wmv3_crystalhd_decoder_select="crystalhd"
2966
2967 # parsers
2968 aac_parser_select="adts_header"
2969 h264_parser_select="golomb h264dsp h264parse"
2970 hevc_parser_select="hevcparse"
2971 mpegaudio_parser_select="mpegaudioheader"
2972 mpegvideo_parser_select="mpegvideo"
2973 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
2974 vc1_parser_select="vc1dsp"
2975
2976 # bitstream_filters
2977 aac_adtstoasc_bsf_select="adts_header"
2978 filter_units_bsf_select="cbs"
2979 h264_metadata_bsf_deps="const_nan"
2980 h264_metadata_bsf_select="cbs_h264"
2981 h264_redundant_pps_bsf_select="cbs_h264"
2982 hevc_metadata_bsf_select="cbs_h265"
2983 mjpeg2jpeg_bsf_select="jpegtables"
2984 mpeg2_metadata_bsf_select="cbs_mpeg2"
2985 trace_headers_bsf_select="cbs"
2986
2987 # external libraries
2988 aac_at_decoder_deps="audiotoolbox"
2989 aac_at_decoder_select="aac_adtstoasc_bsf"
2990 ac3_at_decoder_deps="audiotoolbox"
2991 ac3_at_decoder_select="ac3_parser"
2992 adpcm_ima_qt_at_decoder_deps="audiotoolbox"
2993 alac_at_decoder_deps="audiotoolbox"
2994 amr_nb_at_decoder_deps="audiotoolbox"
2995 avisynth_deps_any="libdl LoadLibrary"
2996 avisynth_demuxer_deps="avisynth"
2997 avisynth_demuxer_select="riffdec"
2998 eac3_at_decoder_deps="audiotoolbox"
2999 eac3_at_decoder_select="ac3_parser"
3000 gsm_ms_at_decoder_deps="audiotoolbox"
3001 ilbc_at_decoder_deps="audiotoolbox"
3002 mp1_at_decoder_deps="audiotoolbox"
3003 mp2_at_decoder_deps="audiotoolbox"
3004 mp3_at_decoder_deps="audiotoolbox"
3005 mp1_at_decoder_select="mpegaudioheader"
3006 mp2_at_decoder_select="mpegaudioheader"
3007 mp3_at_decoder_select="mpegaudioheader"
3008 pcm_alaw_at_decoder_deps="audiotoolbox"
3009 pcm_mulaw_at_decoder_deps="audiotoolbox"
3010 qdmc_at_decoder_deps="audiotoolbox"
3011 qdm2_at_decoder_deps="audiotoolbox"
3012 aac_at_encoder_deps="audiotoolbox"
3013 aac_at_encoder_select="audio_frame_queue"
3014 alac_at_encoder_deps="audiotoolbox"
3015 alac_at_encoder_select="audio_frame_queue"
3016 ilbc_at_encoder_deps="audiotoolbox"
3017 ilbc_at_encoder_select="audio_frame_queue"
3018 pcm_alaw_at_encoder_deps="audiotoolbox"
3019 pcm_alaw_at_encoder_select="audio_frame_queue"
3020 pcm_mulaw_at_encoder_deps="audiotoolbox"
3021 pcm_mulaw_at_encoder_select="audio_frame_queue"
3022 chromaprint_muxer_deps="chromaprint"
3023 h264_videotoolbox_encoder_deps="pthreads"
3024 h264_videotoolbox_encoder_select="videotoolbox_encoder"
3025 hevc_videotoolbox_encoder_deps="pthreads"
3026 hevc_videotoolbox_encoder_select="videotoolbox_encoder"
3027 libaom_av1_decoder_deps="libaom"
3028 libaom_av1_encoder_deps="libaom"
3029 libcelt_decoder_deps="libcelt"
3030 libcodec2_decoder_deps="libcodec2"
3031 libcodec2_encoder_deps="libcodec2"
3032 libfdk_aac_decoder_deps="libfdk_aac"
3033 libfdk_aac_encoder_deps="libfdk_aac"
3034 libfdk_aac_encoder_select="audio_frame_queue"
3035 libgme_demuxer_deps="libgme"
3036 libgsm_decoder_deps="libgsm"
3037 libgsm_encoder_deps="libgsm"
3038 libgsm_ms_decoder_deps="libgsm"
3039 libgsm_ms_encoder_deps="libgsm"
3040 libilbc_decoder_deps="libilbc"
3041 libilbc_encoder_deps="libilbc"
3042 libkvazaar_encoder_deps="libkvazaar"
3043 libmodplug_demuxer_deps="libmodplug"
3044 libmp3lame_encoder_deps="libmp3lame"
3045 libmp3lame_encoder_select="audio_frame_queue mpegaudioheader"
3046 libopencore_amrnb_decoder_deps="libopencore_amrnb"
3047 libopencore_amrnb_encoder_deps="libopencore_amrnb"
3048 libopencore_amrnb_encoder_select="audio_frame_queue"
3049 libopencore_amrwb_decoder_deps="libopencore_amrwb"
3050 libopenh264_decoder_deps="libopenh264"
3051 libopenh264_decoder_select="h264_mp4toannexb_bsf"
3052 libopenh264_encoder_deps="libopenh264"
3053 libopenjpeg_decoder_deps="libopenjpeg"
3054 libopenjpeg_encoder_deps="libopenjpeg"
3055 libopenmpt_demuxer_deps="libopenmpt"
3056 libopus_decoder_deps="libopus"
3057 libopus_encoder_deps="libopus"
3058 libopus_encoder_select="audio_frame_queue"
3059 librsvg_decoder_deps="librsvg"
3060 libshine_encoder_deps="libshine"
3061 libshine_encoder_select="audio_frame_queue"
3062 libspeex_decoder_deps="libspeex"
3063 libspeex_encoder_deps="libspeex"
3064 libspeex_encoder_select="audio_frame_queue"
3065 libtheora_encoder_deps="libtheora"
3066 libtwolame_encoder_deps="libtwolame"
3067 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
3068 libvorbis_decoder_deps="libvorbis"
3069 libvorbis_encoder_deps="libvorbis libvorbisenc"
3070 libvorbis_encoder_select="audio_frame_queue"
3071 libvpx_vp8_decoder_deps="libvpx"
3072 libvpx_vp8_encoder_deps="libvpx"
3073 libvpx_vp9_decoder_deps="libvpx"
3074 libvpx_vp9_encoder_deps="libvpx"
3075 libwavpack_encoder_deps="libwavpack"
3076 libwavpack_encoder_select="audio_frame_queue"
3077 libwebp_encoder_deps="libwebp"
3078 libwebp_anim_encoder_deps="libwebp"
3079 libx262_encoder_deps="libx262"
3080 libx264_encoder_deps="libx264"
3081 libx264rgb_encoder_deps="libx264 x264_csp_bgr"
3082 libx264rgb_encoder_select="libx264_encoder"
3083 libx265_encoder_deps="libx265"
3084 libxavs_encoder_deps="libxavs"
3085 libxvid_encoder_deps="libxvid"
3086 libzvbi_teletext_decoder_deps="libzvbi"
3087 videotoolbox_suggest="coreservices"
3088 videotoolbox_deps="corefoundation coremedia corevideo"
3089 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
3090
3091 # demuxers / muxers
3092 ac3_demuxer_select="ac3_parser"
3093 aiff_muxer_select="iso_media"
3094 asf_demuxer_select="riffdec"
3095 asf_o_demuxer_select="riffdec"
3096 asf_muxer_select="riffenc"
3097 asf_stream_muxer_select="asf_muxer"
3098 avi_demuxer_select="iso_media riffdec exif"
3099 avi_muxer_select="riffenc"
3100 caf_demuxer_select="iso_media riffdec"
3101 caf_muxer_select="iso_media"
3102 dash_muxer_select="mp4_muxer"
3103 dash_demuxer_deps="libxml2"
3104 dirac_demuxer_select="dirac_parser"
3105 dts_demuxer_select="dca_parser"
3106 dtshd_demuxer_select="dca_parser"
3107 dv_demuxer_select="dvprofile"
3108 dv_muxer_select="dvprofile"
3109 dxa_demuxer_select="riffdec"
3110 eac3_demuxer_select="ac3_parser"
3111 f4v_muxer_select="mov_muxer"
3112 fifo_muxer_deps="threads"
3113 flac_demuxer_select="flac_parser"
3114 hds_muxer_select="flv_muxer"
3115 hls_muxer_select="mpegts_muxer"
3116 hls_muxer_suggest="gcrypt openssl"
3117 image2_alias_pix_demuxer_select="image2_demuxer"
3118 image2_brender_pix_demuxer_select="image2_demuxer"
3119 ipod_muxer_select="mov_muxer"
3120 ismv_muxer_select="mov_muxer"
3121 matroska_audio_muxer_select="matroska_muxer"
3122 matroska_demuxer_select="iso_media riffdec"
3123 matroska_demuxer_suggest="bzlib lzo zlib"
3124 matroska_muxer_select="iso_media riffenc"
3125 mmf_muxer_select="riffenc"
3126 mov_demuxer_select="iso_media riffdec"
3127 mov_demuxer_suggest="zlib"
3128 mov_muxer_select="iso_media riffenc rtpenc_chain"
3129 mp3_demuxer_select="mpegaudio_parser"
3130 mp3_muxer_select="mpegaudioheader"
3131 mp4_muxer_select="mov_muxer"
3132 mpegts_demuxer_select="iso_media"
3133 mpegts_muxer_select="adts_muxer latm_muxer"
3134 mpegtsraw_demuxer_select="mpegts_demuxer"
3135 mxf_d10_muxer_select="mxf_muxer"
3136 mxf_opatom_muxer_select="mxf_muxer"
3137 nut_muxer_select="riffenc"
3138 nuv_demuxer_select="riffdec"
3139 oga_muxer_select="ogg_muxer"
3140 ogg_demuxer_select="dirac_parse"
3141 ogv_muxer_select="ogg_muxer"
3142 opus_muxer_select="ogg_muxer"
3143 psp_muxer_select="mov_muxer"
3144 rtp_demuxer_select="sdp_demuxer"
3145 rtp_muxer_select="golomb"
3146 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
3147 rtsp_demuxer_select="http_protocol rtpdec"
3148 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
3149 sap_demuxer_select="sdp_demuxer"
3150 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
3151 sdp_demuxer_select="rtpdec"
3152 smoothstreaming_muxer_select="ismv_muxer"
3153 spdif_demuxer_select="adts_header"
3154 spdif_muxer_select="adts_header"
3155 spx_muxer_select="ogg_muxer"
3156 swf_demuxer_suggest="zlib"
3157 tak_demuxer_select="tak_parser"
3158 tg2_muxer_select="mov_muxer"
3159 tgp_muxer_select="mov_muxer"
3160 vobsub_demuxer_select="mpegps_demuxer"
3161 w64_demuxer_select="wav_demuxer"
3162 w64_muxer_select="wav_muxer"
3163 wav_demuxer_select="riffdec"
3164 wav_muxer_select="riffenc"
3165 webm_muxer_select="iso_media riffenc"
3166 webm_dash_manifest_demuxer_select="matroska_demuxer"
3167 wtv_demuxer_select="mpegts_demuxer riffdec"
3168 wtv_muxer_select="mpegts_muxer riffenc"
3169 xmv_demuxer_select="riffdec"
3170 xwma_demuxer_select="riffdec"
3171
3172 # indevs / outdevs
3173 android_camera_indev_deps="android camera2ndk mediandk pthreads"
3174 android_camera_indev_extralibs="-landroid -lcamera2ndk -lmediandk"
3175 alsa_indev_deps="alsa"
3176 alsa_outdev_deps="alsa"
3177 avfoundation_indev_deps="avfoundation corevideo coremedia pthreads"
3178 avfoundation_indev_suggest="coregraphics applicationservices"
3179 avfoundation_indev_extralibs="-framework Foundation"
3180 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
3181 caca_outdev_deps="libcaca"
3182 decklink_deps_any="libdl LoadLibrary"
3183 decklink_indev_deps="decklink threads"
3184 decklink_indev_extralibs="-lstdc++"
3185 decklink_outdev_deps="decklink threads"
3186 decklink_outdev_extralibs="-lstdc++"
3187 libndi_newtek_indev_deps="libndi_newtek"
3188 libndi_newtek_indev_extralibs="-lndi"
3189 libndi_newtek_outdev_deps="libndi_newtek"
3190 libndi_newtek_outdev_extralibs="-lndi"
3191 dshow_indev_deps="IBaseFilter"
3192 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
3193 fbdev_indev_deps="linux_fb_h"
3194 fbdev_outdev_deps="linux_fb_h"
3195 gdigrab_indev_deps="CreateDIBSection"
3196 gdigrab_indev_extralibs="-lgdi32"
3197 gdigrab_indev_select="bmp_decoder"
3198 iec61883_indev_deps="libiec61883"
3199 jack_indev_deps="libjack"
3200 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
3201 kmsgrab_indev_deps="libdrm"
3202 lavfi_indev_deps="avfilter"
3203 libcdio_indev_deps="libcdio"
3204 libdc1394_indev_deps="libdc1394"
3205 openal_indev_deps="openal"
3206 opengl_outdev_deps="opengl"
3207 oss_indev_deps_any="sys_soundcard_h"
3208 oss_outdev_deps_any="sys_soundcard_h"
3209 pulse_indev_deps="libpulse"
3210 pulse_outdev_deps="libpulse"
3211 sdl2_outdev_deps="sdl2"
3212 sndio_indev_deps="sndio"
3213 sndio_outdev_deps="sndio"
3214 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
3215 v4l2_indev_suggest="libv4l2"
3216 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
3217 v4l2_outdev_suggest="libv4l2"
3218 vfwcap_indev_deps="vfw32 vfwcap_defines"
3219 xcbgrab_indev_deps="libxcb"
3220 xcbgrab_indev_suggest="libxcb_shm libxcb_shape libxcb_xfixes"
3221 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
3222 xv_outdev_extralibs="-lXv -lX11 -lXext"
3223
3224 # protocols
3225 async_protocol_deps="threads"
3226 bluray_protocol_deps="libbluray"
3227 ffrtmpcrypt_protocol_conflict="librtmp_protocol"
3228 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
3229 ffrtmpcrypt_protocol_select="tcp_protocol"
3230 ffrtmphttp_protocol_conflict="librtmp_protocol"
3231 ffrtmphttp_protocol_select="http_protocol"
3232 ftp_protocol_select="tcp_protocol"
3233 gopher_protocol_select="network"
3234 http_protocol_select="tcp_protocol"
3235 http_protocol_suggest="zlib"
3236 httpproxy_protocol_select="tcp_protocol"
3237 httpproxy_protocol_suggest="zlib"
3238 https_protocol_select="tls_protocol"
3239 https_protocol_suggest="zlib"
3240 icecast_protocol_select="http_protocol"
3241 librtmp_protocol_deps="librtmp"
3242 librtmpe_protocol_deps="librtmp"
3243 librtmps_protocol_deps="librtmp"
3244 librtmpt_protocol_deps="librtmp"
3245 librtmpte_protocol_deps="librtmp"
3246 libsmbclient_protocol_deps="libsmbclient gplv3"
3247 libssh_protocol_deps="libssh"
3248 libtls_conflict="openssl gnutls"
3249 mmsh_protocol_select="http_protocol"
3250 mmst_protocol_select="network"
3251 libsrt_protocol_deps="libsrt"
3252 libsrt_protocol_select="network"
3253 rtmp_protocol_conflict="librtmp_protocol"
3254 rtmp_protocol_select="tcp_protocol"
3255 rtmp_protocol_suggest="zlib"
3256 rtmpe_protocol_select="ffrtmpcrypt_protocol"
3257 rtmpe_protocol_suggest="zlib"
3258 rtmps_protocol_conflict="librtmp_protocol"
3259 rtmps_protocol_select="tls_protocol"
3260 rtmps_protocol_suggest="zlib"
3261 rtmpt_protocol_select="ffrtmphttp_protocol"
3262 rtmpt_protocol_suggest="zlib"
3263 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
3264 rtmpte_protocol_suggest="zlib"
3265 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
3266 rtmpts_protocol_suggest="zlib"
3267 rtp_protocol_select="udp_protocol"
3268 schannel_conflict="openssl gnutls libtls"
3269 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
3270 sctp_protocol_select="network"
3271 securetransport_conflict="openssl gnutls libtls"
3272 srtp_protocol_select="rtp_protocol srtp"
3273 tcp_protocol_select="network"
3274 tls_protocol_deps_any="gnutls openssl schannel securetransport libtls"
3275 tls_protocol_select="tcp_protocol"
3276 udp_protocol_select="network"
3277 udplite_protocol_select="network"
3278 unix_protocol_deps="sys_un_h"
3279 unix_protocol_select="network"
3280
3281 # filters
3282 afftfilt_filter_deps="avcodec"
3283 afftfilt_filter_select="fft"
3284 afir_filter_deps="avcodec"
3285 afir_filter_select="fft"
3286 amovie_filter_deps="avcodec avformat"
3287 aresample_filter_deps="swresample"
3288 ass_filter_deps="libass"
3289 atempo_filter_deps="avcodec"
3290 atempo_filter_select="rdft"
3291 avgblur_opencl_filter_deps="opencl"
3292 azmq_filter_deps="libzmq"
3293 blackframe_filter_deps="gpl"
3294 boxblur_filter_deps="gpl"
3295 bs2b_filter_deps="libbs2b"
3296 colormatrix_filter_deps="gpl"
3297 convolution_opencl_filter_deps="opencl"
3298 convolve_filter_deps="avcodec"
3299 convolve_filter_select="fft"
3300 coreimage_filter_deps="coreimage appkit"
3301 coreimage_filter_extralibs="-framework OpenGL"
3302 coreimagesrc_filter_deps="coreimage appkit"
3303 coreimagesrc_filter_extralibs="-framework OpenGL"
3304 cover_rect_filter_deps="avcodec avformat gpl"
3305 cropdetect_filter_deps="gpl"
3306 deconvolve_filter_deps="avcodec"
3307 deconvolve_filter_select="fft"
3308 deinterlace_qsv_filter_deps="libmfx"
3309 deinterlace_vaapi_filter_deps="vaapi"
3310 delogo_filter_deps="gpl"
3311 denoise_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3312 deshake_filter_select="pixelutils"
3313 drawtext_filter_deps="libfreetype"
3314 drawtext_filter_suggest="libfontconfig libfribidi"
3315 elbg_filter_deps="avcodec"
3316 eq_filter_deps="gpl"
3317 fftfilt_filter_deps="avcodec"
3318 fftfilt_filter_select="rdft"
3319 find_rect_filter_deps="avcodec avformat gpl"
3320 firequalizer_filter_deps="avcodec"
3321 firequalizer_filter_select="rdft"
3322 flite_filter_deps="libflite"
3323 framerate_filter_select="pixelutils"
3324 frei0r_filter_deps="frei0r libdl"
3325 frei0r_src_filter_deps="frei0r libdl"
3326 fspp_filter_deps="gpl"
3327 geq_filter_deps="gpl"
3328 histeq_filter_deps="gpl"
3329 hqdn3d_filter_deps="gpl"
3330 interlace_filter_deps="gpl"
3331 kerndeint_filter_deps="gpl"
3332 ladspa_filter_deps="ladspa libdl"
3333 lv2_filter_deps="lv2"
3334 mcdeint_filter_deps="avcodec gpl"
3335 movie_filter_deps="avcodec avformat"
3336 mpdecimate_filter_deps="gpl"
3337 mpdecimate_filter_select="pixelutils"
3338 mptestsrc_filter_deps="gpl"
3339 negate_filter_deps="lut_filter"
3340 nnedi_filter_deps="gpl"
3341 ocr_filter_deps="libtesseract"
3342 ocv_filter_deps="libopencv"
3343 openclsrc_filter_deps="opencl"
3344 overlay_opencl_filter_deps="opencl"
3345 overlay_qsv_filter_deps="libmfx"
3346 overlay_qsv_filter_select="qsvvpp"
3347 owdenoise_filter_deps="gpl"
3348 pan_filter_deps="swresample"
3349 perspective_filter_deps="gpl"
3350 phase_filter_deps="gpl"
3351 pp7_filter_deps="gpl"
3352 pp_filter_deps="gpl postproc"
3353 procamp_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3354 program_opencl_filter_deps="opencl"
3355 pullup_filter_deps="gpl"
3356 removelogo_filter_deps="avcodec avformat swscale"
3357 repeatfields_filter_deps="gpl"
3358 resample_filter_deps="avresample"
3359 rubberband_filter_deps="librubberband"
3360 sab_filter_deps="gpl swscale"
3361 scale2ref_filter_deps="swscale"
3362 scale_filter_deps="swscale"
3363 scale_qsv_filter_deps="libmfx"
3364 select_filter_select="pixelutils"
3365 sharpness_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3366 showcqt_filter_deps="avcodec avformat swscale"
3367 showcqt_filter_suggest="libfontconfig libfreetype"
3368 showcqt_filter_select="fft"
3369 showfreqs_filter_deps="avcodec"
3370 showfreqs_filter_select="fft"
3371 showspectrum_filter_deps="avcodec"
3372 showspectrum_filter_select="fft"
3373 showspectrumpic_filter_deps="avcodec"
3374 showspectrumpic_filter_select="fft"
3375 signature_filter_deps="gpl avcodec avformat"
3376 smartblur_filter_deps="gpl swscale"
3377 sofalizer_filter_deps="libmysofa avcodec"
3378 sofalizer_filter_select="fft"
3379 spectrumsynth_filter_deps="avcodec"
3380 spectrumsynth_filter_select="fft"
3381 spp_filter_deps="gpl avcodec"
3382 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3383 stereo3d_filter_deps="gpl"
3384 subtitles_filter_deps="avformat avcodec libass"
3385 super2xsai_filter_deps="gpl"
3386 pixfmts_super2xsai_test_deps="super2xsai_filter"
3387 tinterlace_filter_deps="gpl"
3388 tinterlace_merge_test_deps="tinterlace_filter"
3389 tinterlace_pad_test_deps="tinterlace_filter"
3390 tonemap_filter_deps="const_nan"
3391 unsharp_opencl_filter_deps="opencl"
3392 uspp_filter_deps="gpl avcodec"
3393 vaguedenoiser_filter_deps="gpl"
3394 vidstabdetect_filter_deps="libvidstab"
3395 vidstabtransform_filter_deps="libvidstab"
3396 libvmaf_filter_deps="libvmaf pthreads"
3397 zmq_filter_deps="libzmq"
3398 zoompan_filter_deps="swscale"
3399 zscale_filter_deps="libzimg const_nan"
3400 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3401 vpp_qsv_filter_deps="libmfx"
3402 vpp_qsv_filter_select="qsvvpp"
3403
3404 # examples
3405 avio_dir_cmd_deps="avformat avutil"
3406 avio_reading_deps="avformat avcodec avutil"
3407 decode_audio_example_deps="avcodec avutil"
3408 decode_video_example_deps="avcodec avutil"
3409 demuxing_decoding_example_deps="avcodec avformat avutil"
3410 encode_audio_example_deps="avcodec avutil"
3411 encode_video_example_deps="avcodec avutil"
3412 extract_mvs_example_deps="avcodec avformat avutil"
3413 filter_audio_example_deps="avfilter avutil"
3414 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3415 filtering_video_example_deps="avfilter avcodec avformat avutil"
3416 http_multiclient_example_deps="avformat avutil fork"
3417 hw_decode_example_deps="avcodec avformat avutil"
3418 metadata_example_deps="avformat avutil"
3419 muxing_example_deps="avcodec avformat avutil swscale"
3420 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
3421 remuxing_example_deps="avcodec avformat avutil"
3422 resampling_audio_example_deps="avutil swresample"
3423 scaling_video_example_deps="avutil swscale"
3424 transcode_aac_example_deps="avcodec avformat swresample"
3425 transcoding_example_deps="avfilter avcodec avformat avutil"
3426 vaapi_encode_example_deps="avcodec avutil h264_vaapi_encoder"
3427 vaapi_transcode_example_deps="avcodec avformat avutil h264_vaapi_encoder"
3428
3429 # EXTRALIBS_LIST
3430 cpu_init_extralibs="pthreads_extralibs"
3431 cws2fws_extralibs="zlib_extralibs"
3432
3433 # libraries, in linking order
3434 avcodec_deps="avutil"
3435 avcodec_suggest="libm"
3436 avcodec_select="null_bsf"
3437 avdevice_deps="avformat avcodec avutil"
3438 avdevice_suggest="libm"
3439 avfilter_deps="avutil"
3440 avfilter_suggest="libm"
3441 avformat_deps="avcodec avutil"
3442 avformat_suggest="libm network zlib"
3443 avresample_deps="avutil"
3444 avresample_suggest="libm"
3445 avutil_suggest="clock_gettime ffnvcodec libm libdrm libmfx opencl user32 vaapi videotoolbox corefoundation corevideo coremedia wincrypt"
3446 postproc_deps="avutil gpl"
3447 postproc_suggest="libm"
3448 swresample_deps="avutil"
3449 swresample_suggest="libm libsoxr"
3450 swscale_deps="avutil"
3451 swscale_suggest="libm"
3452
3453 avcodec_extralibs="pthreads_extralibs iconv_extralibs"
3454 avfilter_extralibs="pthreads_extralibs"
3455 avutil_extralibs="d3d11va_extralibs nanosleep_extralibs pthreads_extralibs vaapi_drm_extralibs vaapi_x11_extralibs vdpau_x11_extralibs"
3456
3457 # programs
3458 ffmpeg_deps="avcodec avfilter avformat swresample"
3459 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3460                null_filter
3461                trim_filter"
3462 ffmpeg_suggest="ole32 psapi shell32"
3463 ffplay_deps="avcodec avformat swscale swresample sdl2"
3464 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3465 ffplay_suggest="shell32"
3466 ffprobe_deps="avcodec avformat"
3467 ffprobe_suggest="shell32"
3468
3469 # documentation
3470 podpages_deps="perl"
3471 manpages_deps="perl pod2man"
3472 htmlpages_deps="perl"
3473 htmlpages_deps_any="makeinfo_html texi2html"
3474 txtpages_deps="perl makeinfo"
3475 doc_deps_any="manpages htmlpages podpages txtpages"
3476
3477 # default parameters
3478
3479 logfile="ffbuild/config.log"
3480
3481 # installation paths
3482 prefix_default="/usr/local"
3483 bindir_default='${prefix}/bin'
3484 datadir_default='${prefix}/share/ffmpeg'
3485 docdir_default='${prefix}/share/doc/ffmpeg'
3486 incdir_default='${prefix}/include'
3487 libdir_default='${prefix}/lib'
3488 mandir_default='${prefix}/share/man'
3489
3490 # toolchain
3491 ar_default="ar"
3492 cc_default="gcc"
3493 cxx_default="g++"
3494 host_cc_default="gcc"
3495 doxygen_default="doxygen"
3496 install="install"
3497 ln_s_default="ln -s -f"
3498 nm_default="nm -g"
3499 pkg_config_default=pkg-config
3500 ranlib_default="ranlib"
3501 strip_default="strip"
3502 version_script='--version-script'
3503 objformat="elf32"
3504 x86asmexe_default="nasm"
3505 windres_default="windres"
3506 nvcc_default="nvcc"
3507 nvccflags_default="-gencode arch=compute_30,code=sm_30 -O2"
3508 striptype="direct"
3509
3510 # OS
3511 target_os_default=$(tolower $(uname -s))
3512 host_os=$target_os_default
3513
3514 # machine
3515 if test "$target_os_default" = aix; then
3516     arch_default=$(uname -p)
3517     strip_default="strip -X32_64"
3518 else
3519     arch_default=$(uname -m)
3520 fi
3521 cpu="generic"
3522 intrinsics="none"
3523
3524 # configurable options
3525 enable $PROGRAM_LIST
3526 enable $DOCUMENT_LIST
3527 enable $EXAMPLE_LIST
3528 enable $(filter_out avresample $LIBRARY_LIST)
3529 enable stripping
3530
3531 enable asm
3532 enable debug
3533 enable doc
3534 enable faan faandct faanidct
3535 enable optimizations
3536 enable runtime_cpudetect
3537 enable safe_bitstream_reader
3538 enable static
3539 enable swscale_alpha
3540 enable valgrind_backtrace
3541
3542 sws_max_filter_size_default=256
3543 set_default sws_max_filter_size
3544
3545 # internal components are enabled by default
3546 enable $EXTRALIBS_LIST
3547
3548 # Avoid external, non-system, libraries getting enabled by dependency resolution
3549 disable $EXTERNAL_LIBRARY_LIST $HWACCEL_LIBRARY_LIST
3550
3551 # build settings
3552 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3553 LIBPREF="lib"
3554 LIBSUF=".a"
3555 FULLNAME='$(NAME)$(BUILDSUF)'
3556 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3557 SLIBPREF="lib"
3558 SLIBSUF=".so"
3559 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3560 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3561 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3562 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3563 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3564 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3565 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
3566
3567 asflags_filter=echo
3568 cflags_filter=echo
3569 ldflags_filter=echo
3570
3571 AS_C='-c'
3572 AS_O='-o $@'
3573 CC_C='-c'
3574 CC_E='-E -o $@'
3575 CC_O='-o $@'
3576 CXX_C='-c'
3577 CXX_O='-o $@'
3578 OBJCC_C='-c'
3579 OBJCC_E='-E -o $@'
3580 OBJCC_O='-o $@'
3581 X86ASM_O='-o $@'
3582 LD_O='-o $@'
3583 LD_LIB='-l%'
3584 LD_PATH='-L'
3585 HOSTCC_C='-c'
3586 HOSTCC_E='-E -o $@'
3587 HOSTCC_O='-o $@'
3588 HOSTLD_O='-o $@'
3589 NVCC_C='-c'
3590 NVCC_O='-o $@'
3591
3592 host_extralibs='-lm'
3593 host_cflags_filter=echo
3594 host_ldflags_filter=echo
3595
3596 target_path='$(CURDIR)'
3597
3598 # since the object filename is not given with the -MM flag, the compiler
3599 # is only able to print the basename, and we must add the path ourselves
3600 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3601 DEPFLAGS='-MM'
3602
3603 mkdir -p ffbuild
3604
3605 # find source path
3606 if test -f configure; then
3607     source_path=.
3608 else
3609     source_path=$(cd $(dirname "$0"); pwd)
3610     case "$source_path" in
3611         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3612     esac
3613     test -e "$source_path/config.h" &&
3614         die "Out of tree builds are impossible with config.h in source dir."
3615 fi
3616
3617 for v in "$@"; do
3618     r=${v#*=}
3619     l=${v%"$r"}
3620     r=$(sh_quote "$r")
3621     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3622 done
3623
3624 find_things(){
3625     thing=$1
3626     pattern=$2
3627     file=$source_path/$3
3628     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
3629 }
3630
3631 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
3632
3633 find_things_extern(){
3634     thing=$1
3635     pattern=$2
3636     file=$source_path/$3
3637     out=${4:-$thing}
3638     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$out/p" "$file"
3639 }
3640
3641 OUTDEV_LIST=$(find_things_extern muxer AVOutputFormat libavdevice/alldevices.c outdev)
3642 INDEV_LIST=$(find_things_extern demuxer AVInputFormat libavdevice/alldevices.c indev)
3643 MUXER_LIST=$(find_things_extern muxer AVOutputFormat libavformat/allformats.c)
3644 DEMUXER_LIST=$(find_things_extern demuxer AVInputFormat libavformat/allformats.c)
3645 ENCODER_LIST=$(find_things_extern encoder AVCodec libavcodec/allcodecs.c)
3646 DECODER_LIST=$(find_things_extern decoder AVCodec libavcodec/allcodecs.c)
3647 CODEC_LIST="
3648     $ENCODER_LIST
3649     $DECODER_LIST
3650 "
3651 PARSER_LIST=$(find_things_extern parser AVCodecParser libavcodec/parser.c)
3652 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3653 HWACCEL_LIST=$(find_things_extern hwaccel AVHWAccel libavcodec/hwaccels.h)
3654 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3655
3656 AVCODEC_COMPONENTS_LIST="
3657     $BSF_LIST
3658     $DECODER_LIST
3659     $ENCODER_LIST
3660     $HWACCEL_LIST
3661     $PARSER_LIST
3662 "
3663
3664 AVDEVICE_COMPONENTS_LIST="
3665     $INDEV_LIST
3666     $OUTDEV_LIST
3667 "
3668
3669 AVFILTER_COMPONENTS_LIST="
3670     $FILTER_LIST
3671 "
3672
3673 AVFORMAT_COMPONENTS_LIST="
3674     $DEMUXER_LIST
3675     $MUXER_LIST
3676     $PROTOCOL_LIST
3677 "
3678
3679 ALL_COMPONENTS="
3680     $AVCODEC_COMPONENTS_LIST
3681     $AVDEVICE_COMPONENTS_LIST
3682     $AVFILTER_COMPONENTS_LIST
3683     $AVFORMAT_COMPONENTS_LIST
3684 "
3685
3686 for n in $COMPONENT_LIST; do
3687     v=$(toupper ${n%s})_LIST
3688     eval enable \$$v
3689     eval ${n}_if_any="\$$v"
3690 done
3691
3692 enable $ARCH_EXT_LIST
3693
3694 die_unknown(){
3695     echo "Unknown option \"$1\"."
3696     echo "See $0 --help for available options."
3697     exit 1
3698 }
3699
3700 print_in_columns() {
3701     cols=$(expr $ncols / 24)
3702     cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
3703 }
3704
3705 show_list() {
3706     suffix=_$1
3707     shift
3708     echo $* | sed s/$suffix//g | print_in_columns
3709     exit 0
3710 }
3711
3712 rand_list(){
3713     IFS=', '
3714     set -- $*
3715     unset IFS
3716     for thing; do
3717         comp=${thing%:*}
3718         prob=${thing#$comp}
3719         prob=${prob#:}
3720         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3721         echo "prob ${prob:-0.5}"
3722         printf '%s\n' $comp
3723     done
3724 }
3725
3726 do_random(){
3727     action=$1
3728     shift
3729     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3730     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3731 }
3732
3733 for opt do
3734     optval="${opt#*=}"
3735     case "$opt" in
3736         --extra-ldflags=*)
3737             add_ldflags $optval
3738         ;;
3739         --extra-ldexeflags=*)
3740             add_ldexeflags $optval
3741         ;;
3742         --extra-ldsoflags=*)
3743             add_ldsoflags $optval
3744         ;;
3745         --extra-ldlibflags=*)
3746             warn "The --extra-ldlibflags option is only provided for compatibility and will be\n"\
3747                  "removed in the future. Use --extra-ldsoflags instead."
3748             add_ldsoflags $optval
3749         ;;
3750         --extra-libs=*)
3751             add_extralibs $optval
3752         ;;
3753         --disable-devices)
3754             disable $INDEV_LIST $OUTDEV_LIST
3755         ;;
3756         --enable-debug=*)
3757             debuglevel="$optval"
3758         ;;
3759         --disable-programs)
3760             disable $PROGRAM_LIST
3761         ;;
3762         --disable-everything)
3763             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3764         ;;
3765         --disable-all)
3766             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3767             disable $LIBRARY_LIST $PROGRAM_LIST doc
3768             enable avutil
3769         ;;
3770         --enable-random|--disable-random)
3771             action=${opt%%-random}
3772             do_random ${action#--} $COMPONENT_LIST
3773         ;;
3774         --enable-random=*|--disable-random=*)
3775             action=${opt%%-random=*}
3776             do_random ${action#--} $optval
3777         ;;
3778         --enable-sdl)
3779             enable sdl2
3780         ;;
3781         --enable-*=*|--disable-*=*)
3782             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3783             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3784             eval list=\$$(toupper $thing)_LIST
3785             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3786             list=$(filter "$name" $list)
3787             [ "$list" = "" ] && warn "Option $opt did not match anything"
3788             $action $list
3789         ;;
3790         --enable-yasm|--disable-yasm)
3791             warn "The ${opt} option is only provided for compatibility and will be\n"\
3792                  "removed in the future. Use --enable-x86asm / --disable-x86asm instead."
3793             test $opt = --enable-yasm && x86asm=yes || x86asm=no
3794         ;;
3795         --yasmexe=*)
3796             warn "The --yasmexe option is only provided for compatibility and will be\n"\
3797                  "removed in the future. Use --x86asmexe instead."
3798             x86asmexe="$optval"
3799         ;;
3800         --enable-?*|--disable-?*)
3801             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3802             if is_in $option $COMPONENT_LIST; then
3803                 test $action = disable && action=unset
3804                 eval $action \$$(toupper ${option%s})_LIST
3805             elif is_in $option $CMDLINE_SELECT; then
3806                 $action $option
3807             else
3808                 die_unknown $opt
3809             fi
3810         ;;
3811         --list-*)
3812             NAME="${opt#--list-}"
3813             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3814             NAME=${NAME%s}
3815             eval show_list $NAME \$$(toupper $NAME)_LIST
3816         ;;
3817         --help|-h) show_help
3818         ;;
3819         --quiet|-q) quiet=yes
3820         ;;
3821         --fatal-warnings) enable fatal_warnings
3822         ;;
3823         --libfuzzer=*)
3824             libfuzzer_path="$optval"
3825         ;;
3826         *)
3827             optname="${opt%%=*}"
3828             optname="${optname#--}"
3829             optname=$(echo "$optname" | sed 's/-/_/g')
3830             if is_in $optname $CMDLINE_SET; then
3831                 eval $optname='$optval'
3832             elif is_in $optname $CMDLINE_APPEND; then
3833                 append $optname "$optval"
3834             else
3835                 die_unknown $opt
3836             fi
3837         ;;
3838     esac
3839 done
3840
3841 for e in $env; do
3842     eval "export $e"
3843 done
3844
3845 if disabled autodetect; then
3846
3847     # Unless iconv is explicitely disabled by the user, we still want to probe
3848     # for the iconv from the libc.
3849     disabled iconv || enable libc_iconv
3850
3851     disable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3852     disable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3853 fi
3854 # Mark specifically enabled, but normally autodetected libraries as requested.
3855 for lib in $AUTODETECT_LIBS; do
3856     enabled $lib && request $lib
3857 done
3858 #TODO: switch to $AUTODETECT_LIBS when $THREADS_LIST is supported the same way
3859 enable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3860 enable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3861
3862 disabled logging && logfile=/dev/null
3863
3864 # command line configuration sanity checks
3865
3866 # we need to build at least one lib type
3867 if ! enabled_any static shared; then
3868     cat <<EOF
3869 At least one library type must be built.
3870 Specify --enable-static to build the static libraries or --enable-shared to
3871 build the shared libraries as well. To only build the shared libraries specify
3872 --disable-static in addition to --enable-shared.
3873 EOF
3874     exit 1
3875 fi
3876
3877 die_license_disabled() {
3878     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
3879 }
3880
3881 die_license_disabled_gpl() {
3882     enabled $1 || { enabled $v && die "$v is incompatible with the gpl and --enable-$1 is not specified."; }
3883 }
3884
3885 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3886 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3887
3888 enabled gpl && map "die_license_disabled_gpl nonfree" $EXTERNAL_LIBRARY_NONFREE_LIST
3889 map "die_license_disabled nonfree" $HWACCEL_LIBRARY_NONFREE_LIST
3890
3891 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3892
3893 if enabled nonfree; then
3894     license="nonfree and unredistributable"
3895 elif enabled gplv3; then
3896     license="GPL version 3 or later"
3897 elif enabled lgplv3; then
3898     license="LGPL version 3 or later"
3899 elif enabled gpl; then
3900     license="GPL version 2 or later"
3901 else
3902     license="LGPL version 2.1 or later"
3903 fi
3904
3905 enabled_all gnutls openssl &&
3906     die "GnuTLS and OpenSSL must not be enabled at the same time."
3907
3908 # Disable all the library-specific components if the library itself
3909 # is disabled, see AVCODEC_LIST and following _LIST variables.
3910
3911 disable_components(){
3912     disabled ${1} && disable $(
3913         eval components="\$$(toupper ${1})_COMPONENTS"
3914         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
3915     )
3916 }
3917
3918 map 'disable_components $v' $LIBRARY_LIST
3919
3920 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
3921 set >> $logfile
3922
3923 test -n "$valgrind" && toolchain="valgrind-memcheck"
3924
3925 enabled ossfuzz && {
3926     add_cflags  -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp -fno-omit-frame-pointer
3927     add_ldflags -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp
3928 }
3929
3930 case "$toolchain" in
3931     *-asan)
3932         cc_default="${toolchain%-asan}"
3933         add_cflags  -fsanitize=address
3934         add_ldflags -fsanitize=address
3935     ;;
3936     *-msan)
3937         cc_default="${toolchain%-msan}"
3938         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
3939         add_ldflags -fsanitize=memory
3940     ;;
3941     *-tsan)
3942         cc_default="${toolchain%-tsan}"
3943         add_cflags  -fsanitize=thread -fPIE
3944         add_ldflags -fsanitize=thread -pie
3945         case "$toolchain" in
3946             gcc-tsan)
3947                 add_cflags  -fPIC
3948                 add_ldflags -fPIC
3949                 ;;
3950         esac
3951     ;;
3952     *-usan)
3953         cc_default="${toolchain%-usan}"
3954         add_cflags  -fsanitize=undefined
3955         add_ldflags -fsanitize=undefined
3956     ;;
3957     valgrind-*)
3958         target_exec_default="valgrind"
3959         case "$toolchain" in
3960             valgrind-massif)
3961                 target_exec_args="--tool=massif --alloc-fn=av_malloc --alloc-fn=av_mallocz --alloc-fn=av_calloc --alloc-fn=av_fast_padded_malloc --alloc-fn=av_fast_malloc --alloc-fn=av_realloc_f --alloc-fn=av_fast_realloc --alloc-fn=av_realloc"
3962                 ;;
3963             valgrind-memcheck)
3964                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3965                 ;;
3966         esac
3967     ;;
3968     msvc)
3969         # Check whether the current MSVC version needs the C99 converter.
3970         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3971         # support enough of C99 to build ffmpeg. Default to the new
3972         # behaviour if the regexp was unable to match anything, since this
3973         # successfully parses the version number of existing supported
3974         # versions that require the converter (MSVC 2010 and 2012).
3975         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3976         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3977             cc_default="cl"
3978             cxx_default="cl"
3979         else
3980             cc_default="c99wrap cl"
3981             cxx_default="c99wrap cl"
3982         fi
3983         ld_default="$source_path/compat/windows/mslink"
3984         nm_default="dumpbin -symbols"
3985         ar_default="lib"
3986         case "$arch" in
3987         aarch64|arm64)
3988             as_default="armasm64"
3989             ;;
3990         arm*)
3991             as_default="armasm"
3992             ;;
3993         esac
3994         target_os_default="win32"
3995         # Use a relative path for TMPDIR. This makes sure all the
3996         # ffconf temp files are written with a relative path, avoiding
3997         # issues with msys/win32 path conversion for MSVC parameters
3998         # such as -Fo<file> or -out:<file>.
3999         TMPDIR=.
4000     ;;
4001     icl)
4002         cc_default="icl"
4003         ld_default="xilink"
4004         nm_default="dumpbin -symbols"
4005         ar_default="xilib"
4006         target_os_default="win32"
4007         TMPDIR=.
4008     ;;
4009     gcov)
4010         add_cflags  -fprofile-arcs -ftest-coverage
4011         add_ldflags -fprofile-arcs -ftest-coverage
4012     ;;
4013     llvm-cov)
4014         add_cflags -fprofile-arcs -ftest-coverage
4015         add_ldflags --coverage
4016     ;;
4017     hardened)
4018         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
4019         add_cflags   -fno-strict-overflow -fstack-protector-all
4020         add_ldflags  -Wl,-z,relro -Wl,-z,now
4021         add_cflags   -fPIE
4022         add_ldexeflags -fPIE -pie
4023     ;;
4024     ?*)
4025         die "Unknown toolchain $toolchain"
4026     ;;
4027 esac
4028
4029 if test -n "$cross_prefix"; then
4030     test -n "$arch" && test -n "$target_os" ||
4031         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
4032     enable cross_compile
4033 fi
4034
4035 ar_default="${cross_prefix}${ar_default}"
4036 cc_default="${cross_prefix}${cc_default}"
4037 cxx_default="${cross_prefix}${cxx_default}"
4038 nm_default="${cross_prefix}${nm_default}"
4039 pkg_config_default="${cross_prefix}${pkg_config_default}"
4040 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
4041     ranlib_default="${cross_prefix}${ranlib_default} -D"
4042 else
4043     ranlib_default="${cross_prefix}${ranlib_default}"
4044 fi
4045 strip_default="${cross_prefix}${strip_default}"
4046 windres_default="${cross_prefix}${windres_default}"
4047
4048 sysinclude_default="${sysroot}/usr/include"
4049
4050 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
4051     target_exec target_os x86asmexe nvcc
4052 enabled cross_compile || host_cc_default=$cc
4053 set_default host_cc
4054
4055 pkg_config_fail_message=""
4056 if ! $pkg_config --version >/dev/null 2>&1; then
4057     warn "$pkg_config not found, library detection may fail."
4058     pkg_config=false
4059 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
4060     pkg_config_fail_message="
4061 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
4062 fi
4063
4064 if test $doxygen != $doxygen_default && \
4065   ! $doxygen --version >/dev/null 2>&1; then
4066     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
4067 fi
4068
4069 exesuf() {
4070     case $1 in
4071         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
4072     esac
4073 }
4074
4075 EXESUF=$(exesuf $target_os)
4076 HOSTEXESUF=$(exesuf $host_os)
4077
4078 # set temporary file name
4079 : ${TMPDIR:=$TEMPDIR}
4080 : ${TMPDIR:=$TMP}
4081 : ${TMPDIR:=/tmp}
4082
4083 if [ -n "$tempprefix" ] ; then
4084     mktemp(){
4085         tmpname="$tempprefix.${HOSTNAME}.${UID}"
4086         echo "$tmpname"
4087         mkdir "$tmpname"
4088     }
4089 elif ! test_cmd mktemp -u XXXXXX; then
4090     # simple replacement for missing mktemp
4091     # NOT SAFE FOR GENERAL USE
4092     mktemp(){
4093         tmpname="${2%%XXX*}.${HOSTNAME}.${UID}.$$"
4094         echo "$tmpname"
4095         mkdir "$tmpname"
4096     }
4097 fi
4098
4099 FFTMPDIR=$(mktemp -d "${TMPDIR}/ffconf.XXXXXXXX" 2> /dev/null) ||
4100     die "Unable to create temporary directory in $TMPDIR."
4101
4102 tmpfile(){
4103     tmp="${FFTMPDIR}/test"$2
4104     (set -C; exec > $tmp) 2> /dev/null ||
4105         die "Unable to create temporary file in $FFTMPDIR."
4106     eval $1=$tmp
4107 }
4108
4109 trap 'rm -rf -- "$FFTMPDIR"' EXIT
4110 trap 'exit 2' INT
4111
4112 tmpfile TMPASM .asm
4113 tmpfile TMPC   .c
4114 tmpfile TMPCPP .cpp
4115 tmpfile TMPE   $EXESUF
4116 tmpfile TMPH   .h
4117 tmpfile TMPM   .m
4118 tmpfile TMPO   .o
4119 tmpfile TMPS   .S
4120 tmpfile TMPSH  .sh
4121 tmpfile TMPV   .ver
4122
4123 unset -f mktemp
4124
4125 chmod +x $TMPE
4126
4127 # make sure we can execute files in $TMPDIR
4128 cat > $TMPSH 2>> $logfile <<EOF
4129 #! /bin/sh
4130 EOF
4131 chmod +x $TMPSH >> $logfile 2>&1
4132 if ! $TMPSH >> $logfile 2>&1; then
4133     cat <<EOF
4134 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
4135 variable to another directory and make sure that it is not mounted noexec.
4136 EOF
4137     die "Sanity test failed."
4138 fi
4139
4140 armasm_flags(){
4141     for flag; do
4142         case $flag in
4143             # Filter out MSVC cl.exe options from cflags that shouldn't
4144             # be passed to gas-preprocessor
4145             -M[TD]*)                                            ;;
4146             *)                  echo $flag                      ;;
4147         esac
4148    done
4149 }
4150
4151 cparser_flags(){
4152     for flag; do
4153         case $flag in
4154             -Wno-switch)             echo -Wno-switch-enum ;;
4155             -Wno-format-zero-length) ;;
4156             -Wdisabled-optimization) ;;
4157             -Wno-pointer-sign)       echo -Wno-other ;;
4158             *)                       echo $flag ;;
4159         esac
4160     done
4161 }
4162
4163 msvc_common_flags(){
4164     for flag; do
4165         case $flag in
4166             # In addition to specifying certain flags under the compiler
4167             # specific filters, they must be specified here as well or else the
4168             # generic catch all at the bottom will print the original flag.
4169             -Wall)                ;;
4170             -Wextra)              ;;
4171             -std=c99)             ;;
4172             # Common flags
4173             -fomit-frame-pointer) ;;
4174             -g)                   echo -Z7 ;;
4175             -fno-math-errno)      ;;
4176             -fno-common)          ;;
4177             -fno-signed-zeros)    ;;
4178             -fPIC)                ;;
4179             -mthumb)              ;;
4180             -march=*)             ;;
4181             -lz)                  echo zlib.lib ;;
4182             -lx264)               echo libx264.lib ;;
4183             -lstdc++)             ;;
4184             -l*)                  echo ${flag#-l}.lib ;;
4185             -LARGEADDRESSAWARE)   echo $flag ;;
4186             -L*)                  echo -libpath:${flag#-L} ;;
4187             *)                    echo $flag ;;
4188         esac
4189     done
4190 }
4191
4192 msvc_flags(){
4193     msvc_common_flags "$@"
4194     for flag; do
4195         case $flag in
4196             -Wall)                echo -W3 -wd4018 -wd4146 -wd4244 -wd4305     \
4197                                        -wd4554 ;;
4198             -Wextra)              echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
4199                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
4200                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
4201                                        -wd4307 \
4202                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
4203         esac
4204     done
4205 }
4206
4207 icl_flags(){
4208     msvc_common_flags "$@"
4209     for flag; do
4210         case $flag in
4211             # Despite what Intel's documentation says -Wall, which is supported
4212             # on Windows, does enable remarks so disable them here.
4213             -Wall)                echo $flag -Qdiag-disable:remark ;;
4214             -std=c99)             echo -Qstd=c99 ;;
4215             -flto)                echo -ipo ;;
4216         esac
4217     done
4218 }
4219
4220 icc_flags(){
4221     for flag; do
4222         case $flag in
4223             -flto)                echo -ipo ;;
4224             *)                    echo $flag ;;
4225         esac
4226     done
4227 }
4228
4229 suncc_flags(){
4230     for flag; do
4231         case $flag in
4232             -march=*|-mcpu=*)
4233                 case "${flag#*=}" in
4234                     native)                   echo -xtarget=native       ;;
4235                     v9|niagara)               echo -xarch=sparc          ;;
4236                     ultrasparc)               echo -xarch=sparcvis       ;;
4237                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
4238                     i586|pentium)             echo -xchip=pentium        ;;
4239                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
4240                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
4241                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
4242                     pentium4*)          echo -xtarget=pentium4           ;;
4243                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
4244                     *-sse3)             echo -xarch=sse3                 ;;
4245                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
4246                     bonnell)                   echo -xarch=ssse3         ;;
4247                     corei7|nehalem)            echo -xtarget=nehalem     ;;
4248                     westmere)                  echo -xtarget=westmere    ;;
4249                     silvermont)                echo -xarch=sse4_2        ;;
4250                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
4251                     core-avx*|ivybridge|haswell|broadwell|skylake*|knl)
4252                                                echo -xarch=avx           ;;
4253                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
4254                     btver1)                    echo -xarch=amdsse4a      ;;
4255                     btver2|bdver*|znver*)      echo -xarch=avx           ;;
4256                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
4257                     k8|opteron|athlon64|athlon-fx)
4258                                                echo -xarch=sse2a         ;;
4259                     athlon*)                   echo -xarch=pentium_proa  ;;
4260                 esac
4261                 ;;
4262             -std=c99)             echo -xc99              ;;
4263             -fomit-frame-pointer) echo -xregs=frameptr    ;;
4264             -fPIC)                echo -KPIC -xcode=pic32 ;;
4265             -W*,*)                echo $flag              ;;
4266             -f*-*|-W*|-mimpure-text)                      ;;
4267             -shared)              echo -G                 ;;
4268             *)                    echo $flag              ;;
4269         esac
4270     done
4271 }
4272
4273 probe_cc(){
4274     pfx=$1
4275     _cc=$2
4276     first=$3
4277
4278     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
4279     unset _ld_o _ldflags _ld_lib _ld_path
4280     unset _depflags _DEPCMD _DEPFLAGS
4281     _flags_filter=echo
4282
4283     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
4284         true # no-op to avoid reading stdin in following checks
4285     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
4286         _type=llvm_gcc
4287         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
4288         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
4289         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4290         _cflags_speed='-O3'
4291         _cflags_size='-Os'
4292     elif $_cc -v 2>&1 | grep -qi ^gcc; then
4293         _type=gcc
4294         gcc_version=$($_cc --version | head -n1)
4295         gcc_basever=$($_cc -dumpversion)
4296         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
4297         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
4298         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
4299         case $gcc_basever in
4300             2) ;;
4301             2.*) ;;
4302             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
4303         esac
4304         if [ "$first" = true ]; then
4305             case $gcc_basever in
4306                 4.2*)
4307                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
4308             esac
4309         fi
4310         _cflags_speed='-O3'
4311         _cflags_size='-Os'
4312     elif $_cc --version 2>/dev/null | grep -q ^icc; then
4313         _type=icc
4314         _ident=$($_cc --version | head -n1)
4315         _depflags='-MMD'
4316         _cflags_speed='-O3'
4317         _cflags_size='-Os'
4318         _cflags_noopt='-O1'
4319         _flags_filter=icc_flags
4320     elif $_cc -v 2>&1 | grep -q xlc; then
4321         _type=xlc
4322         _ident=$($_cc -qversion 2>/dev/null | head -n1)
4323         _cflags_speed='-O5'
4324         _cflags_size='-O5 -qcompact'
4325     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
4326         test -d "$sysroot" || die "No valid sysroot specified."
4327         _type=armcc
4328         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
4329         armcc_conf="$PWD/armcc.conf"
4330         $_cc --arm_linux_configure                 \
4331              --arm_linux_config_file="$armcc_conf" \
4332              --configure_sysroot="$sysroot"        \
4333              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
4334              die "Error creating armcc configuration file."
4335         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
4336         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
4337         as_default="${cross_prefix}gcc"
4338         _depflags='-MMD'
4339         _cflags_speed='-O3'
4340         _cflags_size='-Os'
4341     elif $_cc -v 2>&1 | grep -q clang; then
4342         _type=clang
4343         _ident=$($_cc --version 2>/dev/null | head -n1)
4344         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4345         _cflags_speed='-O3'
4346         _cflags_size='-Oz'
4347     elif $_cc -V 2>&1 | grep -q Sun; then
4348         _type=suncc
4349         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
4350         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
4351         _DEPFLAGS='-xM1 -xc99'
4352         _ldflags='-std=c99'
4353         _cflags_speed='-O5'
4354         _cflags_size='-O5 -xspace'
4355         _flags_filter=suncc_flags
4356     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
4357         _type=pathscale
4358         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4359         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4360         _cflags_speed='-O2'
4361         _cflags_size='-Os'
4362         _flags_filter='filter_out -Wdisabled-optimization'
4363     elif $_cc -v 2>&1 | grep -q Open64; then
4364         _type=open64
4365         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4366         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4367         _cflags_speed='-O2'
4368         _cflags_size='-Os'
4369         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
4370     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
4371         _type=armasm
4372         _ident=$($_cc | head -n1)
4373         # 4509: "This form of conditional instruction is deprecated"
4374         _flags="-nologo -ignore 4509"
4375         _flags_filter=armasm_flags
4376     elif $_cc 2>&1 | grep -q Intel; then
4377         _type=icl
4378         _ident=$($_cc 2>&1 | head -n1)
4379         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
4380         # Not only is O3 broken on 13.x+ but it is slower on all previous
4381         # versions (tested) as well.
4382         _cflags_speed="-O2"
4383         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
4384         if $_cc 2>&1 | grep -q Linker; then
4385             _ld_o='-out:$@'
4386         else
4387             _ld_o='-Fe$@'
4388         fi
4389         _cc_o='-Fo$@'
4390         _cc_e='-P'
4391         _flags_filter=icl_flags
4392         _ld_lib='lib%.a'
4393         _ld_path='-libpath:'
4394         # -Qdiag-error to make icl error when seeing certain unknown arguments
4395         _flags='-nologo -Qdiag-error:4044,10157'
4396         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
4397         # with MSVC which enables it by default.
4398         _cflags='-Qms0 -Qvec- -Qsimd- -GS -fp:precise'
4399         disable stripping
4400     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
4401         # lld can emulate multiple different linkers; in ms link.exe mode,
4402         # the -? parameter gives the help output which contains an identifyable
4403         # string, while it gives an error in other modes.
4404         _type=lld-link
4405         # The link.exe mode doesn't have a switch for getting the version,
4406         # but we can force it back to gnu mode and get the version from there.
4407         _ident=$($_cc -flavor gnu --version 2>/dev/null)
4408         _ld_o='-out:$@'
4409         _flags_filter=msvc_flags
4410         _ld_lib='lib%.a'
4411         _ld_path='-libpath:'
4412     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
4413         _type=msvc
4414         _ident=$($_cc 2>&1 | head -n1 | tr -d '\r')
4415         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
4416         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
4417         _cflags_speed="-O2"
4418         _cflags_size="-O1"
4419         _cflags_noopt="-O1"
4420         if $_cc -nologo- 2>&1 | grep -q Linker; then
4421             _ld_o='-out:$@'
4422         else
4423             _ld_o='-Fe$@'
4424         fi
4425         _cc_o='-Fo$@'
4426         _cc_e='-P -Fi$@'
4427         _flags_filter=msvc_flags
4428         _ld_lib='lib%.a'
4429         _ld_path='-libpath:'
4430         _flags='-nologo'
4431         disable stripping
4432     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
4433         _type=cparser
4434         _ident=$($_cc --version | head -n1)
4435         _depflags='-MMD'
4436         _cflags_speed='-O4'
4437         _cflags_size='-O2'
4438         _flags_filter=cparser_flags
4439     fi
4440
4441     eval ${pfx}_type=\$_type
4442     eval ${pfx}_ident=\$_ident
4443 }
4444
4445 set_ccvars(){
4446     eval ${1}_C=\${_cc_c-\${${1}_C}}
4447     eval ${1}_E=\${_cc_e-\${${1}_E}}
4448     eval ${1}_O=\${_cc_o-\${${1}_O}}
4449
4450     if [ -n "$_depflags" ]; then
4451         eval ${1}_DEPFLAGS=\$_depflags
4452     else
4453         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
4454         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
4455         eval DEP${1}FLAGS=\$_flags
4456     fi
4457 }
4458
4459 probe_cc cc "$cc" "true"
4460 cflags_filter=$_flags_filter
4461 cflags_speed=$_cflags_speed
4462 cflags_size=$_cflags_size
4463 cflags_noopt=$_cflags_noopt
4464 add_cflags $_flags $_cflags
4465 cc_ldflags=$_ldflags
4466 set_ccvars CC
4467 set_ccvars CXX
4468
4469 probe_cc hostcc "$host_cc"
4470 host_cflags_filter=$_flags_filter
4471 host_cflags_speed=$_cflags_speed
4472 add_host_cflags  $_flags $_cflags
4473 set_ccvars HOSTCC
4474
4475 test -n "$cc_type" && enable $cc_type ||
4476     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4477
4478 : ${as_default:=$cc}
4479 : ${objcc_default:=$cc}
4480 : ${dep_cc_default:=$cc}
4481 : ${ld_default:=$cc}
4482 : ${host_ld_default:=$host_cc}
4483 set_default ar as objcc dep_cc ld ln_s host_ld windres
4484
4485 probe_cc as "$as"
4486 asflags_filter=$_flags_filter
4487 add_asflags $_flags $_cflags
4488 set_ccvars AS
4489
4490 probe_cc objcc "$objcc"
4491 objcflags_filter=$_flags_filter
4492 add_objcflags $_flags $_cflags
4493 set_ccvars OBJC
4494
4495 probe_cc ld "$ld"
4496 ldflags_filter=$_flags_filter
4497 add_ldflags $_flags $_ldflags
4498 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4499 LD_O=${_ld_o-$LD_O}
4500 LD_LIB=${_ld_lib-$LD_LIB}
4501 LD_PATH=${_ld_path-$LD_PATH}
4502
4503 probe_cc hostld "$host_ld"
4504 host_ldflags_filter=$_flags_filter
4505 add_host_ldflags $_flags $_ldflags
4506 HOSTLD_O=${_ld_o-$HOSTLD_O}
4507
4508 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4509     probe_cc depcc "$dep_cc"
4510     CCDEP=${_DEPCMD:-$DEPCMD}
4511     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4512     DEPCCFLAGS=$_flags
4513 fi
4514
4515 if $ar 2>&1 | grep -q Microsoft; then
4516     arflags="-nologo"
4517     ar_o='-out:$@'
4518 elif $ar 2>&1 | grep -q "\[D\] "; then
4519     arflags="rcD"
4520     ar_o='$@'
4521 else
4522     arflags="rc"
4523     ar_o='$@'
4524 fi
4525
4526 add_cflags $extra_cflags
4527 add_cxxflags $extra_cxxflags
4528 add_objcflags $extra_objcflags
4529 add_asflags $extra_cflags
4530
4531 if test -n "$sysroot"; then
4532     case "$cc_type" in
4533         gcc|llvm_gcc|clang)
4534             add_cppflags --sysroot="$sysroot"
4535             add_ldflags --sysroot="$sysroot"
4536         ;;
4537     esac
4538 fi
4539
4540 if test "$cpu" = host; then
4541     enabled cross_compile &&
4542         die "--cpu=host makes no sense when cross-compiling."
4543
4544     case "$cc_type" in
4545         gcc|llvm_gcc)
4546             check_native(){
4547                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4548                 sed -n "/cc1.*$1=/{
4549                             s/.*$1=\\([^ ]*\\).*/\\1/
4550                             p
4551                             q
4552                         }" $TMPE
4553             }
4554             cpu=$(check_native -march || check_native -mcpu)
4555         ;;
4556         clang)
4557             check_native(){
4558                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4559                 sed -n "/cc1.*-target-cpu /{
4560                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4561                             p
4562                             q
4563                         }" $TMPE
4564             }
4565             cpu=$(check_native -march)
4566         ;;
4567     esac
4568
4569     test "${cpu:-host}" = host &&
4570         die "--cpu=host not supported with compiler $cc"
4571 fi
4572
4573 # Deal with common $arch aliases
4574 case "$arch" in
4575     aarch64|arm64)
4576         arch="aarch64"
4577     ;;
4578     arm*|iPad*|iPhone*)
4579         arch="arm"
4580     ;;
4581     mips*|IP*)
4582         case "$arch" in
4583         *el)
4584             add_cppflags -EL
4585             add_ldflags -EL
4586         ;;
4587         *eb)
4588             add_cppflags -EB
4589             add_ldflags -EB
4590         ;;
4591         esac
4592         arch="mips"
4593     ;;
4594     parisc*|hppa*)
4595         arch="parisc"
4596     ;;
4597     "Power Macintosh"|ppc*|powerpc*)
4598         arch="ppc"
4599     ;;
4600     s390|s390x)
4601         arch="s390"
4602     ;;
4603     sh4|sh)
4604         arch="sh4"
4605     ;;
4606     sun4*|sparc*)
4607         arch="sparc"
4608     ;;
4609     tilegx|tile-gx)
4610         arch="tilegx"
4611     ;;
4612     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4613         arch="x86"
4614     ;;
4615 esac
4616
4617 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4618 enable $arch
4619
4620 # Add processor-specific flags
4621 if enabled aarch64; then
4622
4623     case $cpu in
4624         armv*)
4625             cpuflags="-march=$cpu"
4626         ;;
4627         *)
4628             cpuflags="-mcpu=$cpu"
4629         ;;
4630     esac
4631
4632 elif enabled alpha; then
4633
4634     cpuflags="-mcpu=$cpu"
4635
4636 elif enabled arm; then
4637
4638     check_arm_arch() {
4639         test_cpp_condition stddef.h \
4640             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4641             $cpuflags
4642     }
4643
4644     probe_arm_arch() {
4645         if   check_arm_arch 4;        then echo armv4
4646         elif check_arm_arch 4T;       then echo armv4t
4647         elif check_arm_arch 5;        then echo armv5
4648         elif check_arm_arch 5E;       then echo armv5e
4649         elif check_arm_arch 5T;       then echo armv5t
4650         elif check_arm_arch 5TE;      then echo armv5te
4651         elif check_arm_arch 5TEJ;     then echo armv5te
4652         elif check_arm_arch 6;        then echo armv6
4653         elif check_arm_arch 6J;       then echo armv6j
4654         elif check_arm_arch 6K;       then echo armv6k
4655         elif check_arm_arch 6Z;       then echo armv6z
4656         elif check_arm_arch 6KZ;      then echo armv6zk
4657         elif check_arm_arch 6ZK;      then echo armv6zk
4658         elif check_arm_arch 6T2;      then echo armv6t2
4659         elif check_arm_arch 7;        then echo armv7
4660         elif check_arm_arch 7A  7_A;  then echo armv7-a
4661         elif check_arm_arch 7S;       then echo armv7-a
4662         elif check_arm_arch 7R  7_R;  then echo armv7-r
4663         elif check_arm_arch 7M  7_M;  then echo armv7-m
4664         elif check_arm_arch 7EM 7E_M; then echo armv7-m
4665         elif check_arm_arch 8A  8_A;  then echo armv8-a
4666         fi
4667     }
4668
4669     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4670
4671     case $cpu in
4672         armv*)
4673             cpuflags="-march=$cpu"
4674             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4675         ;;
4676         *)
4677             cpuflags="-mcpu=$cpu"
4678             case $cpu in
4679                 cortex-a*)                               subarch=armv7a  ;;
4680                 cortex-r*)                               subarch=armv7r  ;;
4681                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4682                 arm11*)                                  subarch=armv6   ;;
4683                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4684                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4685                 *)                             subarch=$(probe_arm_arch) ;;
4686             esac
4687         ;;
4688     esac
4689
4690     case "$subarch" in
4691         armv5t*)    enable fast_clz                ;;
4692         armv[6-8]*)
4693             enable fast_clz
4694             disabled fast_unaligned || enable fast_unaligned
4695             ;;
4696     esac
4697
4698 elif enabled avr32; then
4699
4700     case $cpu in
4701         ap7[02]0[0-2])
4702             subarch="avr32_ap"
4703             cpuflags="-mpart=$cpu"
4704         ;;
4705         ap)
4706             subarch="avr32_ap"
4707             cpuflags="-march=$cpu"
4708         ;;
4709         uc3[ab]*)
4710             subarch="avr32_uc"
4711             cpuflags="-mcpu=$cpu"
4712         ;;
4713         uc)
4714             subarch="avr32_uc"
4715             cpuflags="-march=$cpu"
4716         ;;
4717     esac
4718
4719 elif enabled bfin; then
4720
4721     cpuflags="-mcpu=$cpu"
4722
4723 elif enabled mips; then
4724
4725     cpuflags="-march=$cpu"
4726
4727     if [ "$cpu" != "generic" ]; then
4728         disable mips32r2
4729         disable mips32r5
4730         disable mips64r2
4731         disable mips32r6
4732         disable mips64r6
4733         disable loongson2
4734         disable loongson3
4735
4736         case $cpu in
4737             24kc|24kf*|24kec|34kc|1004kc|24kef*|34kf*|1004kf*|74kc|74kf)
4738                 enable mips32r2
4739                 disable msa
4740             ;;
4741             p5600|i6400|p6600)
4742                 disable mipsdsp
4743                 disable mipsdspr2
4744             ;;
4745             loongson*)
4746                 enable loongson2
4747                 enable loongson3
4748                 enable local_aligned
4749                 enable simd_align_16
4750                 enable fast_64bit
4751                 enable fast_clz
4752                 enable fast_cmov
4753                 enable fast_unaligned
4754                 disable aligned_stack
4755                 disable mipsfpu
4756                 disable mipsdsp
4757                 disable mipsdspr2
4758                 case $cpu in
4759                     loongson3*)
4760                         cpuflags="-march=loongson3a -mhard-float -fno-expensive-optimizations"
4761                     ;;
4762                     loongson2e)
4763                         cpuflags="-march=loongson2e -mhard-float -fno-expensive-optimizations"
4764                     ;;
4765                     loongson2f)
4766                         cpuflags="-march=loongson2f -mhard-float -fno-expensive-optimizations"
4767                     ;;
4768                 esac
4769             ;;
4770             *)
4771                 # Unknown CPU. Disable everything.
4772                 warn "unknown CPU. Disabling all MIPS optimizations."
4773                 disable mipsfpu
4774                 disable mipsdsp
4775                 disable mipsdspr2
4776                 disable msa
4777                 disable mmi
4778             ;;
4779         esac
4780
4781         case $cpu in
4782             24kc)
4783                 disable mipsfpu
4784                 disable mipsdsp
4785                 disable mipsdspr2
4786             ;;
4787             24kf*)
4788                 disable mipsdsp
4789                 disable mipsdspr2
4790             ;;
4791             24kec|34kc|1004kc)
4792                 disable mipsfpu
4793                 disable mipsdspr2
4794             ;;
4795             24kef*|34kf*|1004kf*)
4796                 disable mipsdspr2
4797             ;;
4798             74kc)
4799                 disable mipsfpu
4800             ;;
4801             p5600)
4802                 enable mips32r5
4803                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
4804             ;;
4805             i6400)
4806                 enable mips64r6
4807                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4808             ;;
4809             p6600)
4810                 enable mips64r6
4811                 check_cflags "-mtune=p6600 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4812             ;;
4813         esac
4814     else
4815         # We do not disable anything. Is up to the user to disable the unwanted features.
4816         warn 'generic cpu selected'
4817     fi
4818
4819 elif enabled ppc; then
4820
4821     disable ldbrx
4822
4823     case $(tolower $cpu) in
4824         601|ppc601|powerpc601)
4825             cpuflags="-mcpu=601"
4826             disable altivec
4827         ;;
4828         603*|ppc603*|powerpc603*)
4829             cpuflags="-mcpu=603"
4830             disable altivec
4831         ;;
4832         604*|ppc604*|powerpc604*)
4833             cpuflags="-mcpu=604"
4834             disable altivec
4835         ;;
4836         g3|75*|ppc75*|powerpc75*)
4837             cpuflags="-mcpu=750"
4838             disable altivec
4839         ;;
4840         g4|745*|ppc745*|powerpc745*)
4841             cpuflags="-mcpu=7450"
4842             disable vsx
4843         ;;
4844         74*|ppc74*|powerpc74*)
4845             cpuflags="-mcpu=7400"
4846             disable vsx
4847         ;;
4848         g5|970|ppc970|powerpc970)
4849             cpuflags="-mcpu=970"
4850             disable vsx
4851         ;;
4852         power[3-6]*)
4853             cpuflags="-mcpu=$cpu"
4854             disable vsx
4855         ;;
4856         power[7-8]*)
4857             cpuflags="-mcpu=$cpu"
4858         ;;
4859         cell)
4860             cpuflags="-mcpu=cell"
4861             enable ldbrx
4862             disable vsx
4863         ;;
4864         e500mc)
4865             cpuflags="-mcpu=e500mc"
4866             disable altivec
4867         ;;
4868         e500v2)
4869             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
4870             disable altivec
4871             disable dcbzl
4872         ;;
4873         e500)
4874             cpuflags="-mcpu=8540 -mhard-float"
4875             disable altivec
4876             disable dcbzl
4877         ;;
4878     esac
4879
4880 elif enabled sparc; then
4881
4882     case $cpu in
4883         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
4884             cpuflags="-mcpu=$cpu"
4885         ;;
4886         ultrasparc*|niagara[234])
4887             cpuflags="-mcpu=$cpu"
4888         ;;
4889     esac
4890
4891 elif enabled x86; then
4892
4893     case $cpu in
4894         i[345]86|pentium)
4895             cpuflags="-march=$cpu"
4896             disable i686
4897             disable mmx
4898         ;;
4899         # targets that do NOT support nopl and conditional mov (cmov)
4900         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
4901             cpuflags="-march=$cpu"
4902             disable i686
4903         ;;
4904         # targets that do support nopl and conditional mov (cmov)
4905         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
4906         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|skylake*|knl\
4907         |amdfam10|barcelona|b[dt]ver*|znver*)
4908             cpuflags="-march=$cpu"
4909             enable i686
4910             enable fast_cmov
4911         ;;
4912         # targets that do support conditional mov but on which it's slow
4913         pentium4|pentium4m|prescott|nocona)
4914             cpuflags="-march=$cpu"
4915             enable i686
4916             disable fast_cmov
4917         ;;
4918     esac
4919
4920 fi
4921
4922 if [ "$cpu" != generic ]; then
4923     add_cflags  $cpuflags
4924     add_asflags $cpuflags
4925     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
4926 fi
4927
4928 # compiler sanity check
4929 test_exec <<EOF
4930 int main(void){ return 0; }
4931 EOF
4932 if test "$?" != 0; then
4933     echo "$cc is unable to create an executable file."
4934     if test -z "$cross_prefix" && ! enabled cross_compile ; then
4935         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
4936         echo "Only do this if you know what cross compiling means."
4937     fi
4938     die "C compiler test failed."
4939 fi
4940
4941 add_cppflags -D_ISOC99_SOURCE
4942 add_cxxflags -D__STDC_CONSTANT_MACROS
4943 check_cxxflags -std=c++11 || check_cxxflags -std=c++0x
4944
4945 # some compilers silently accept -std=c11, so we also need to check that the
4946 # version macro is defined properly
4947 test_cflags_cc -std=c11 ctype.h "__STDC_VERSION__ >= 201112L" &&
4948     add_cflags -std=c11 ||
4949     check_cflags -std=c99
4950
4951 check_cppflags -D_FILE_OFFSET_BITS=64
4952 check_cppflags -D_LARGEFILE_SOURCE
4953
4954 add_host_cppflags -D_ISOC99_SOURCE
4955 check_host_cflags -std=c99
4956 check_host_cflags -Wall
4957 check_host_cflags $host_cflags_speed
4958
4959 check_64bit(){