avformat/argo_{asf,brp}: use variable frame sizes when (de)muxing adpcm_argo
[ffmpeg.git] / configure
1 #!/bin/sh
2 #
3 # FFmpeg configure script
4 #
5 # Copyright (c) 2000-2002 Fabrice Bellard
6 # Copyright (c) 2005-2008 Diego Biurrun
7 # Copyright (c) 2005-2008 Mans Rullgard
8 #
9
10 # Prevent locale nonsense from breaking basic text processing.
11 LC_ALL=C
12 export LC_ALL
13
14 # make sure we are running under a compatible shell
15 # try to make this part work with most shells
16
17 try_exec(){
18     echo "Trying shell $1"
19     type "$1" > /dev/null 2>&1 && exec "$@"
20 }
21
22 unset foo
23 (: ${foo%%bar}) 2> /dev/null
24 E1="$?"
25
26 (: ${foo?}) 2> /dev/null
27 E2="$?"
28
29 if test "$E1" != 0 || test "$E2" = 0; then
30     echo "Broken shell detected.  Trying alternatives."
31     export FF_CONF_EXEC
32     if test "0$FF_CONF_EXEC" -lt 1; then
33         FF_CONF_EXEC=1
34         try_exec bash "$0" "$@"
35     fi
36     if test "0$FF_CONF_EXEC" -lt 2; then
37         FF_CONF_EXEC=2
38         try_exec ksh "$0" "$@"
39     fi
40     if test "0$FF_CONF_EXEC" -lt 3; then
41         FF_CONF_EXEC=3
42         try_exec /usr/xpg4/bin/sh "$0" "$@"
43     fi
44     echo "No compatible shell script interpreter found."
45     echo "This configure script requires a POSIX-compatible shell"
46     echo "such as bash or ksh."
47     echo "THIS IS NOT A BUG IN FFMPEG, DO NOT REPORT IT AS SUCH."
48     echo "Instead, install a working POSIX-compatible shell."
49     echo "Disabling this configure test will create a broken FFmpeg."
50     if test "$BASH_VERSION" = '2.04.0(1)-release'; then
51         echo "This bash version ($BASH_VERSION) is broken on your platform."
52         echo "Upgrade to a later version if available."
53     fi
54     exit 1
55 fi
56
57 test -d /usr/xpg4/bin && PATH=/usr/xpg4/bin:$PATH
58
59 show_help(){
60     cat <<EOF
61 Usage: configure [options]
62 Options: [defaults in brackets after descriptions]
63
64 Help options:
65   --help                   print this message
66   --quiet                  Suppress showing informative output
67   --list-decoders          show all available decoders
68   --list-encoders          show all available encoders
69   --list-hwaccels          show all available hardware accelerators
70   --list-demuxers          show all available demuxers
71   --list-muxers            show all available muxers
72   --list-parsers           show all available parsers
73   --list-protocols         show all available protocols
74   --list-bsfs              show all available bitstream filters
75   --list-indevs            show all available input devices
76   --list-outdevs           show all available output devices
77   --list-filters           show all available filters
78
79 Standard options:
80   --logfile=FILE           log tests and output to FILE [ffbuild/config.log]
81   --disable-logging        do not log configure debug information
82   --fatal-warnings         fail if any configure warning is generated
83   --prefix=PREFIX          install in PREFIX [$prefix_default]
84   --bindir=DIR             install binaries in DIR [PREFIX/bin]
85   --datadir=DIR            install data files in DIR [PREFIX/share/ffmpeg]
86   --docdir=DIR             install documentation in DIR [PREFIX/share/doc/ffmpeg]
87   --libdir=DIR             install libs in DIR [PREFIX/lib]
88   --shlibdir=DIR           install shared libs in DIR [LIBDIR]
89   --incdir=DIR             install includes in DIR [PREFIX/include]
90   --mandir=DIR             install man page in DIR [PREFIX/share/man]
91   --pkgconfigdir=DIR       install pkg-config files in DIR [LIBDIR/pkgconfig]
92   --enable-rpath           use rpath to allow installing libraries in paths
93                            not part of the dynamic linker search path
94                            use rpath when linking programs (USE WITH CARE)
95   --install-name-dir=DIR   Darwin directory name for installed targets
96
97 Licensing options:
98   --enable-gpl             allow use of GPL code, the resulting libs
99                            and binaries will be under GPL [no]
100   --enable-version3        upgrade (L)GPL to version 3 [no]
101   --enable-nonfree         allow use of nonfree code, the resulting libs
102                            and binaries will be unredistributable [no]
103
104 Configuration options:
105   --disable-static         do not build static libraries [no]
106   --enable-shared          build shared libraries [no]
107   --enable-small           optimize for size instead of speed
108   --disable-runtime-cpudetect disable detecting CPU capabilities at runtime (smaller binary)
109   --enable-gray            enable full grayscale support (slower color)
110   --disable-swscale-alpha  disable alpha channel support in swscale
111   --disable-all            disable building components, libraries and programs
112   --disable-autodetect     disable automatically detected external libraries [no]
113
114 Program options:
115   --disable-programs       do not build command line programs
116   --disable-ffmpeg         disable ffmpeg build
117   --disable-ffplay         disable ffplay build
118   --disable-ffprobe        disable ffprobe build
119
120 Documentation options:
121   --disable-doc            do not build documentation
122   --disable-htmlpages      do not build HTML documentation pages
123   --disable-manpages       do not build man documentation pages
124   --disable-podpages       do not build POD documentation pages
125   --disable-txtpages       do not build text documentation pages
126
127 Component options:
128   --disable-avdevice       disable libavdevice build
129   --disable-avcodec        disable libavcodec build
130   --disable-avformat       disable libavformat build
131   --disable-swresample     disable libswresample build
132   --disable-swscale        disable libswscale build
133   --disable-postproc       disable libpostproc build
134   --disable-avfilter       disable libavfilter build
135   --enable-avresample      enable libavresample build (deprecated) [no]
136   --disable-pthreads       disable pthreads [autodetect]
137   --disable-w32threads     disable Win32 threads [autodetect]
138   --disable-os2threads     disable OS/2 threads [autodetect]
139   --disable-network        disable network support [no]
140   --disable-dct            disable DCT code
141   --disable-dwt            disable DWT code
142   --disable-error-resilience disable error resilience code
143   --disable-lsp            disable LSP code
144   --disable-lzo            disable LZO decoder code
145   --disable-mdct           disable MDCT code
146   --disable-rdft           disable RDFT code
147   --disable-fft            disable FFT code
148   --disable-faan           disable floating point AAN (I)DCT code
149   --disable-pixelutils     disable pixel utils in libavutil
150
151 Individual component options:
152   --disable-everything     disable all components listed below
153   --disable-encoder=NAME   disable encoder NAME
154   --enable-encoder=NAME    enable encoder NAME
155   --disable-encoders       disable all encoders
156   --disable-decoder=NAME   disable decoder NAME
157   --enable-decoder=NAME    enable decoder NAME
158   --disable-decoders       disable all decoders
159   --disable-hwaccel=NAME   disable hwaccel NAME
160   --enable-hwaccel=NAME    enable hwaccel NAME
161   --disable-hwaccels       disable all hwaccels
162   --disable-muxer=NAME     disable muxer NAME
163   --enable-muxer=NAME      enable muxer NAME
164   --disable-muxers         disable all muxers
165   --disable-demuxer=NAME   disable demuxer NAME
166   --enable-demuxer=NAME    enable demuxer NAME
167   --disable-demuxers       disable all demuxers
168   --enable-parser=NAME     enable parser NAME
169   --disable-parser=NAME    disable parser NAME
170   --disable-parsers        disable all parsers
171   --enable-bsf=NAME        enable bitstream filter NAME
172   --disable-bsf=NAME       disable bitstream filter NAME
173   --disable-bsfs           disable all bitstream filters
174   --enable-protocol=NAME   enable protocol NAME
175   --disable-protocol=NAME  disable protocol NAME
176   --disable-protocols      disable all protocols
177   --enable-indev=NAME      enable input device NAME
178   --disable-indev=NAME     disable input device NAME
179   --disable-indevs         disable input devices
180   --enable-outdev=NAME     enable output device NAME
181   --disable-outdev=NAME    disable output device NAME
182   --disable-outdevs        disable output devices
183   --disable-devices        disable all devices
184   --enable-filter=NAME     enable filter NAME
185   --disable-filter=NAME    disable filter NAME
186   --disable-filters        disable all filters
187
188 External library support:
189
190   Using any of the following switches will allow FFmpeg to link to the
191   corresponding external library. All the components depending on that library
192   will become enabled, if all their other dependencies are met and they are not
193   explicitly disabled. E.g. --enable-libwavpack will enable linking to
194   libwavpack and allow the libwavpack encoder to be built, unless it is
195   specifically disabled with --disable-encoder=libwavpack.
196
197   Note that only the system libraries are auto-detected. All the other external
198   libraries must be explicitly enabled.
199
200   Also note that the following help text describes the purpose of the libraries
201   themselves, not all their features will necessarily be usable by FFmpeg.
202
203   --disable-alsa           disable ALSA support [autodetect]
204   --disable-appkit         disable Apple AppKit framework [autodetect]
205   --disable-avfoundation   disable Apple AVFoundation framework [autodetect]
206   --enable-avisynth        enable reading of AviSynth script files [no]
207   --disable-bzlib          disable bzlib [autodetect]
208   --disable-coreimage      disable Apple CoreImage framework [autodetect]
209   --enable-chromaprint     enable audio fingerprinting with chromaprint [no]
210   --enable-frei0r          enable frei0r video filtering [no]
211   --enable-gcrypt          enable gcrypt, needed for rtmp(t)e support
212                            if openssl, librtmp or gmp is not used [no]
213   --enable-gmp             enable gmp, needed for rtmp(t)e support
214                            if openssl or librtmp is not used [no]
215   --enable-gnutls          enable gnutls, needed for https support
216                            if openssl, libtls or mbedtls is not used [no]
217   --disable-iconv          disable iconv [autodetect]
218   --enable-jni             enable JNI support [no]
219   --enable-ladspa          enable LADSPA audio filtering [no]
220   --enable-libaom          enable AV1 video encoding/decoding via libaom [no]
221   --enable-libaribb24      enable ARIB text and caption decoding via libaribb24 [no]
222   --enable-libass          enable libass subtitles rendering,
223                            needed for subtitles and ass filter [no]
224   --enable-libbluray       enable BluRay reading using libbluray [no]
225   --enable-libbs2b         enable bs2b DSP library [no]
226   --enable-libcaca         enable textual display using libcaca [no]
227   --enable-libcelt         enable CELT decoding via libcelt [no]
228   --enable-libcdio         enable audio CD grabbing with libcdio [no]
229   --enable-libcodec2       enable codec2 en/decoding using libcodec2 [no]
230   --enable-libdav1d        enable AV1 decoding via libdav1d [no]
231   --enable-libdavs2        enable AVS2 decoding via libdavs2 [no]
232   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
233                            and libraw1394 [no]
234   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
235   --enable-libflite        enable flite (voice synthesis) support via libflite [no]
236   --enable-libfontconfig   enable libfontconfig, useful for drawtext filter [no]
237   --enable-libfreetype     enable libfreetype, needed for drawtext filter [no]
238   --enable-libfribidi      enable libfribidi, improves drawtext filter [no]
239   --enable-libglslang      enable GLSL->SPIRV compilation via libglslang [no]
240   --enable-libgme          enable Game Music Emu via libgme [no]
241   --enable-libgsm          enable GSM de/encoding via libgsm [no]
242   --enable-libiec61883     enable iec61883 via libiec61883 [no]
243   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
244   --enable-libjack         enable JACK audio sound server [no]
245   --enable-libklvanc       enable Kernel Labs VANC processing [no]
246   --enable-libkvazaar      enable HEVC encoding via libkvazaar [no]
247   --enable-liblensfun      enable lensfun lens correction [no]
248   --enable-libmodplug      enable ModPlug via libmodplug [no]
249   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
250   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
251   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
252   --enable-libopencv       enable video filtering via libopencv [no]
253   --enable-libopenh264     enable H.264 encoding via OpenH264 [no]
254   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
255   --enable-libopenmpt      enable decoding tracked files via libopenmpt [no]
256   --enable-libopenvino     enable OpenVINO as a DNN module backend
257                            for DNN based filters like dnn_processing [no]
258   --enable-libopus         enable Opus de/encoding via libopus [no]
259   --enable-libpulse        enable Pulseaudio input via libpulse [no]
260   --enable-librabbitmq     enable RabbitMQ library [no]
261   --enable-librav1e        enable AV1 encoding via rav1e [no]
262   --enable-librsvg         enable SVG rasterization via librsvg [no]
263   --enable-librubberband   enable rubberband needed for rubberband filter [no]
264   --enable-librtmp         enable RTMP[E] support via librtmp [no]
265   --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
266   --enable-libsmbclient    enable Samba protocol via libsmbclient [no]
267   --enable-libsnappy       enable Snappy compression, needed for hap encoding [no]
268   --enable-libsoxr         enable Include libsoxr resampling [no]
269   --enable-libspeex        enable Speex de/encoding via libspeex [no]
270   --enable-libsrt          enable Haivision SRT protocol via libsrt [no]
271   --enable-libssh          enable SFTP protocol via libssh [no]
272   --enable-libsvtav1       enable AV1 encoding via SVT [no]
273   --enable-libtensorflow   enable TensorFlow as a DNN module backend
274                            for DNN based filters like sr [no]
275   --enable-libtesseract    enable Tesseract, needed for ocr filter [no]
276   --enable-libtheora       enable Theora encoding via libtheora [no]
277   --enable-libtls          enable LibreSSL (via libtls), needed for https support
278                            if openssl, gnutls or mbedtls is not used [no]
279   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
280   --enable-libv4l2         enable libv4l2/v4l-utils [no]
281   --enable-libvidstab      enable video stabilization using vid.stab [no]
282   --enable-libvmaf         enable vmaf filter via libvmaf [no]
283   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
284   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
285                            native implementation exists [no]
286   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
287   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
288   --enable-libwebp         enable WebP encoding via libwebp [no]
289   --enable-libx264         enable H.264 encoding via x264 [no]
290   --enable-libx265         enable HEVC encoding via x265 [no]
291   --enable-libxavs         enable AVS encoding via xavs [no]
292   --enable-libxavs2        enable AVS2 encoding via xavs2 [no]
293   --enable-libxcb          enable X11 grabbing using XCB [autodetect]
294   --enable-libxcb-shm      enable X11 grabbing shm communication [autodetect]
295   --enable-libxcb-xfixes   enable X11 grabbing mouse rendering [autodetect]
296   --enable-libxcb-shape    enable X11 grabbing shape rendering [autodetect]
297   --enable-libxvid         enable Xvid encoding via xvidcore,
298                            native MPEG-4/Xvid encoder exists [no]
299   --enable-libxml2         enable XML parsing using the C library libxml2, needed
300                            for dash demuxing support [no]
301   --enable-libzimg         enable z.lib, needed for zscale filter [no]
302   --enable-libzmq          enable message passing via libzmq [no]
303   --enable-libzvbi         enable teletext support via libzvbi [no]
304   --enable-lv2             enable LV2 audio filtering [no]
305   --disable-lzma           disable lzma [autodetect]
306   --enable-decklink        enable Blackmagic DeckLink I/O support [no]
307   --enable-mbedtls         enable mbedTLS, needed for https support
308                            if openssl, gnutls or libtls is not used [no]
309   --enable-mediacodec      enable Android MediaCodec support [no]
310   --enable-mediafoundation enable encoding via MediaFoundation [auto]
311   --enable-libmysofa       enable libmysofa, needed for sofalizer filter [no]
312   --enable-openal          enable OpenAL 1.1 capture support [no]
313   --enable-opencl          enable OpenCL processing [no]
314   --enable-opengl          enable OpenGL rendering [no]
315   --enable-openssl         enable openssl, needed for https support
316                            if gnutls, libtls or mbedtls is not used [no]
317   --enable-pocketsphinx    enable PocketSphinx, needed for asr filter [no]
318   --disable-sndio          disable sndio support [autodetect]
319   --disable-schannel       disable SChannel SSP, needed for TLS support on
320                            Windows if openssl and gnutls are not used [autodetect]
321   --disable-sdl2           disable sdl2 [autodetect]
322   --disable-securetransport disable Secure Transport, needed for TLS support
323                            on OSX if openssl and gnutls are not used [autodetect]
324   --enable-vapoursynth     enable VapourSynth demuxer [no]
325   --enable-vulkan          enable Vulkan code [no]
326   --disable-xlib           disable xlib [autodetect]
327   --disable-zlib           disable zlib [autodetect]
328
329   The following libraries provide various hardware acceleration features:
330   --disable-amf            disable AMF video encoding code [autodetect]
331   --disable-audiotoolbox   disable Apple AudioToolbox code [autodetect]
332   --enable-cuda-nvcc       enable Nvidia CUDA compiler [no]
333   --disable-cuda-llvm      disable CUDA compilation using clang [autodetect]
334   --disable-cuvid          disable Nvidia CUVID support [autodetect]
335   --disable-d3d11va        disable Microsoft Direct3D 11 video acceleration code [autodetect]
336   --disable-dxva2          disable Microsoft DirectX 9 video acceleration code [autodetect]
337   --disable-ffnvcodec      disable dynamically linked Nvidia code [autodetect]
338   --enable-libdrm          enable DRM code (Linux) [no]
339   --enable-libmfx          enable Intel MediaSDK (AKA Quick Sync Video) code via libmfx [no]
340   --enable-libnpp          enable Nvidia Performance Primitives-based code [no]
341   --enable-mmal            enable Broadcom Multi-Media Abstraction Layer (Raspberry Pi) via MMAL [no]
342   --disable-nvdec          disable Nvidia video decoding acceleration (via hwaccel) [autodetect]
343   --disable-nvenc          disable Nvidia video encoding code [autodetect]
344   --enable-omx             enable OpenMAX IL code [no]
345   --enable-omx-rpi         enable OpenMAX IL code for Raspberry Pi [no]
346   --enable-rkmpp           enable Rockchip Media Process Platform code [no]
347   --disable-v4l2-m2m       disable V4L2 mem2mem code [autodetect]
348   --disable-vaapi          disable Video Acceleration API (mainly Unix/Intel) code [autodetect]
349   --disable-vdpau          disable Nvidia Video Decode and Presentation API for Unix code [autodetect]
350   --disable-videotoolbox   disable VideoToolbox code [autodetect]
351
352 Toolchain options:
353   --arch=ARCH              select architecture [$arch]
354   --cpu=CPU                select the minimum required CPU (affects
355                            instruction selection, may crash on older CPUs)
356   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
357   --progs-suffix=SUFFIX    program name suffix []
358   --enable-cross-compile   assume a cross-compiler is used
359   --sysroot=PATH           root of cross-build tree
360   --sysinclude=PATH        location of cross-build system headers
361   --target-os=OS           compiler targets OS [$target_os]
362   --target-exec=CMD        command to run executables on target
363   --target-path=DIR        path to view of build directory on target
364   --target-samples=DIR     path to samples directory on target
365   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
366   --toolchain=NAME         set tool defaults according to NAME
367                            (gcc-asan, clang-asan, gcc-msan, clang-msan,
368                            gcc-tsan, clang-tsan, gcc-usan, clang-usan,
369                            valgrind-massif, valgrind-memcheck,
370                            msvc, icl, gcov, llvm-cov, hardened)
371   --nm=NM                  use nm tool NM [$nm_default]
372   --ar=AR                  use archive tool AR [$ar_default]
373   --as=AS                  use assembler AS [$as_default]
374   --ln_s=LN_S              use symbolic link tool LN_S [$ln_s_default]
375   --strip=STRIP            use strip tool STRIP [$strip_default]
376   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
377   --x86asmexe=EXE          use nasm-compatible assembler EXE [$x86asmexe_default]
378   --cc=CC                  use C compiler CC [$cc_default]
379   --cxx=CXX                use C compiler CXX [$cxx_default]
380   --objcc=OCC              use ObjC compiler OCC [$cc_default]
381   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
382   --nvcc=NVCC              use Nvidia CUDA compiler NVCC or clang [$nvcc_default]
383   --ld=LD                  use linker LD [$ld_default]
384   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
385   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
386   --ranlib=RANLIB          use ranlib RANLIB [$ranlib_default]
387   --doxygen=DOXYGEN        use DOXYGEN to generate API doc [$doxygen_default]
388   --host-cc=HOSTCC         use host C compiler HOSTCC
389   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
390   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
391   --host-ld=HOSTLD         use host linker HOSTLD
392   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
393   --host-extralibs=HLIBS   use libs HLIBS when linking for host
394   --host-os=OS             compiler host OS [$target_os]
395   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
396   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
397   --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
398   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
399   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
400   --extra-ldsoflags=ELDFLAGS add ELDFLAGS to LDSOFLAGS [$LDSOFLAGS]
401   --extra-libs=ELIBS       add ELIBS [$ELIBS]
402   --extra-version=STRING   version string suffix []
403   --optflags=OPTFLAGS      override optimization-related compiler flags
404   --nvccflags=NVCCFLAGS    override nvcc flags [$nvccflags_default]
405   --build-suffix=SUFFIX    library name suffix []
406   --enable-pic             build position-independent code
407   --enable-thumb           compile for Thumb instruction set
408   --enable-lto             use link-time optimization
409   --env="ENV=override"     override the environment variables
410
411 Advanced options (experts only):
412   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
413   --custom-allocator=NAME  use a supported custom allocator
414   --disable-symver         disable symbol versioning
415   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
416   --disable-safe-bitstream-reader
417                            disable buffer boundary checking in bitreaders
418                            (faster, but may crash)
419   --sws-max-filter-size=N  the max filter size swscale uses [$sws_max_filter_size_default]
420
421 Optimization options (experts only):
422   --disable-asm            disable all assembly optimizations
423   --disable-altivec        disable AltiVec optimizations
424   --disable-vsx            disable VSX optimizations
425   --disable-power8         disable POWER8 optimizations
426   --disable-amd3dnow       disable 3DNow! optimizations
427   --disable-amd3dnowext    disable 3DNow! extended optimizations
428   --disable-mmx            disable MMX optimizations
429   --disable-mmxext         disable MMXEXT optimizations
430   --disable-sse            disable SSE optimizations
431   --disable-sse2           disable SSE2 optimizations
432   --disable-sse3           disable SSE3 optimizations
433   --disable-ssse3          disable SSSE3 optimizations
434   --disable-sse4           disable SSE4 optimizations
435   --disable-sse42          disable SSE4.2 optimizations
436   --disable-avx            disable AVX optimizations
437   --disable-xop            disable XOP optimizations
438   --disable-fma3           disable FMA3 optimizations
439   --disable-fma4           disable FMA4 optimizations
440   --disable-avx2           disable AVX2 optimizations
441   --disable-avx512         disable AVX-512 optimizations
442   --disable-aesni          disable AESNI optimizations
443   --disable-armv5te        disable armv5te optimizations
444   --disable-armv6          disable armv6 optimizations
445   --disable-armv6t2        disable armv6t2 optimizations
446   --disable-vfp            disable VFP optimizations
447   --disable-neon           disable NEON optimizations
448   --disable-inline-asm     disable use of inline assembly
449   --disable-x86asm         disable use of standalone x86 assembly
450   --disable-mipsdsp        disable MIPS DSP ASE R1 optimizations
451   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
452   --disable-msa            disable MSA optimizations
453   --disable-msa2           disable MSA2 optimizations
454   --disable-mipsfpu        disable floating point MIPS optimizations
455   --disable-mmi            disable Loongson SIMD optimizations
456   --disable-fast-unaligned consider unaligned accesses slow
457
458 Developer options (useful when working on FFmpeg itself):
459   --disable-debug          disable debugging symbols
460   --enable-debug=LEVEL     set the debug level [$debuglevel]
461   --disable-optimizations  disable compiler optimizations
462   --enable-extra-warnings  enable more compiler warnings
463   --disable-stripping      disable stripping of executables and shared libraries
464   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
465                            2 causes a slowdown at runtime.
466   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
467   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
468                            leaks and errors, using the specified valgrind binary.
469                            Cannot be combined with --target-exec
470   --enable-ftrapv          Trap arithmetic overflows
471   --samples=PATH           location of test samples for FATE, if not set use
472                            \$FATE_SAMPLES at make invocation time.
473   --enable-neon-clobber-test check NEON registers for clobbering (should be
474                            used only for debugging purposes)
475   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
476                            should be used only for debugging purposes)
477   --enable-random          randomly enable/disable components
478   --disable-random
479   --enable-random=LIST     randomly enable/disable specific components or
480   --disable-random=LIST    component groups. LIST is a comma-separated list
481                            of NAME[:PROB] entries where NAME is a component
482                            (group) and PROB the probability associated with
483                            NAME (default 0.5).
484   --random-seed=VALUE      seed value for --enable/disable-random
485   --disable-valgrind-backtrace do not print a backtrace under Valgrind
486                            (only applies to --disable-optimizations builds)
487   --enable-ossfuzz         Enable building fuzzer tool
488   --libfuzzer=PATH         path to libfuzzer
489   --ignore-tests=TESTS     comma-separated list (without "fate-" prefix
490                            in the name) of tests whose result is ignored
491   --enable-linux-perf      enable Linux Performance Monitor API
492   --disable-large-tests    disable tests that use a large amount of memory
493
494 NOTE: Object files are built at the place where configure is launched.
495 EOF
496   exit 0
497 }
498
499 if test -t 1 && which tput >/dev/null 2>&1; then
500     ncolors=$(tput colors)
501     if test -n "$ncolors" && test $ncolors -ge 8; then
502         bold_color=$(tput bold)
503         warn_color=$(tput setaf 3)
504         error_color=$(tput setaf 1)
505         reset_color=$(tput sgr0)
506     fi
507     # 72 used instead of 80 since that's the default of pr
508     ncols=$(tput cols)
509 fi
510 : ${ncols:=72}
511
512 log(){
513     echo "$@" >> $logfile
514 }
515
516 log_file(){
517     log BEGIN "$1"
518     log_file_i=1
519     while IFS= read -r log_file_line; do
520         printf '%5d\t%s\n' "$log_file_i" "$log_file_line"
521         log_file_i=$(($log_file_i+1))
522     done < "$1" >> "$logfile"
523     log END "$1"
524 }
525
526 warn(){
527     log "WARNING: $*"
528     WARNINGS="${WARNINGS}WARNING: $*\n"
529 }
530
531 die(){
532     log "$@"
533     echo "$error_color$bold_color$@$reset_color"
534     cat <<EOF
535
536 If you think configure made a mistake, make sure you are using the latest
537 version from Git.  If the latest version fails, report the problem to the
538 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
539 EOF
540     if disabled logging; then
541         cat <<EOF
542 Rerun configure with logging enabled (do not use --disable-logging), and
543 include the log this produces with your report.
544 EOF
545     else
546         cat <<EOF
547 Include the log file "$logfile" produced by configure as this will help
548 solve the problem.
549 EOF
550     fi
551     exit 1
552 }
553
554 # Avoid locale weirdness, besides we really just want to translate ASCII.
555 toupper(){
556     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
557 }
558
559 tolower(){
560     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
561 }
562
563 c_escape(){
564     echo "$*" | sed 's/["\\]/\\\0/g'
565 }
566
567 sh_quote(){
568     v=$(echo "$1" | sed "s/'/'\\\\''/g")
569     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
570     echo "$v"
571 }
572
573 cleanws(){
574     echo "$@" | sed 's/^ *//;s/[[:space:]][[:space:]]*/ /g;s/ *$//'
575 }
576
577 filter(){
578     pat=$1
579     shift
580     for v; do
581         eval "case '$v' in $pat) printf '%s ' '$v' ;; esac"
582     done
583 }
584
585 filter_out(){
586     pat=$1
587     shift
588     for v; do
589         eval "case '$v' in $pat) ;; *) printf '%s ' '$v' ;; esac"
590     done
591 }
592
593 map(){
594     m=$1
595     shift
596     for v; do eval $m; done
597 }
598
599 add_suffix(){
600     suffix=$1
601     shift
602     for v; do echo ${v}${suffix}; done
603 }
604
605 remove_suffix(){
606     suffix=$1
607     shift
608     for v; do echo ${v%$suffix}; done
609 }
610
611 set_all(){
612     value=$1
613     shift
614     for var in $*; do
615         eval $var=$value
616     done
617 }
618
619 set_weak(){
620     value=$1
621     shift
622     for var; do
623         eval : \${$var:=$value}
624     done
625 }
626
627 sanitize_var_name(){
628     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
629 }
630
631 set_sanitized(){
632     var=$1
633     shift
634     eval $(sanitize_var_name "$var")='$*'
635 }
636
637 get_sanitized(){
638     eval echo \$$(sanitize_var_name "$1")
639 }
640
641 pushvar(){
642     for pvar in $*; do
643         eval level=\${${pvar}_level:=0}
644         eval ${pvar}_${level}="\$$pvar"
645         eval ${pvar}_level=$(($level+1))
646     done
647 }
648
649 popvar(){
650     for pvar in $*; do
651         eval level=\${${pvar}_level:-0}
652         test $level = 0 && continue
653         eval level=$(($level-1))
654         eval $pvar="\${${pvar}_${level}}"
655         eval ${pvar}_level=$level
656         eval unset ${pvar}_${level}
657     done
658 }
659
660 request(){
661     for var in $*; do
662         eval ${var}_requested=yes
663         eval $var=
664     done
665 }
666
667 warn_if_gets_disabled(){
668     for var in $*; do
669         WARN_IF_GETS_DISABLED_LIST="$WARN_IF_GETS_DISABLED_LIST $var"
670     done
671 }
672
673 enable(){
674     set_all yes $*
675 }
676
677 disable(){
678     set_all no $*
679 }
680
681 disable_with_reason(){
682     disable $1
683     eval "${1}_disable_reason=\"$2\""
684     if requested $1; then
685         die "ERROR: $1 requested, but $2"
686     fi
687 }
688
689 enable_weak(){
690     set_weak yes $*
691 }
692
693 disable_weak(){
694     set_weak no $*
695 }
696
697 enable_sanitized(){
698     for var; do
699         enable $(sanitize_var_name $var)
700     done
701 }
702
703 disable_sanitized(){
704     for var; do
705         disable $(sanitize_var_name $var)
706     done
707 }
708
709 do_enable_deep(){
710     for var; do
711         enabled $var && continue
712         set -- $var
713         eval enable_deep \$${var}_select
714         var=$1
715         eval enable_deep_weak \$${var}_suggest
716     done
717 }
718
719 enable_deep(){
720     do_enable_deep $*
721     enable $*
722 }
723
724 enable_deep_weak(){
725     for var; do
726         disabled $var && continue
727         set -- $var
728         do_enable_deep $var
729         var=$1
730         enable_weak $var
731     done
732 }
733
734 requested(){
735     test "${1#!}" = "$1" && op="=" || op="!="
736     eval test "x\$${1#!}_requested" $op "xyes"
737 }
738
739 enabled(){
740     test "${1#!}" = "$1" && op="=" || op="!="
741     eval test "x\$${1#!}" $op "xyes"
742 }
743
744 disabled(){
745     test "${1#!}" = "$1" && op="=" || op="!="
746     eval test "x\$${1#!}" $op "xno"
747 }
748
749 enabled_all(){
750     for opt; do
751         enabled $opt || return 1
752     done
753 }
754
755 disabled_all(){
756     for opt; do
757         disabled $opt || return 1
758     done
759 }
760
761 enabled_any(){
762     for opt; do
763         enabled $opt && return 0
764     done
765 }
766
767 disabled_any(){
768     for opt; do
769         disabled $opt && return 0
770     done
771     return 1
772 }
773
774 set_default(){
775     for opt; do
776         eval : \${$opt:=\$${opt}_default}
777     done
778 }
779
780 is_in(){
781     value=$1
782     shift
783     for var in $*; do
784         [ $var = $value ] && return 0
785     done
786     return 1
787 }
788
789 # The cfg loop is very hot (several thousands iterations), and in bash also
790 # potentialy quite slow. Try to abort the iterations early, preferably without
791 # calling functions. 70%+ of the time cfg is already done or without deps.
792 check_deps(){
793     for cfg; do
794         eval [ x\$${cfg}_checking = xdone ] && continue
795         eval [ x\$${cfg}_checking = xinprogress ] && die "Circular dependency for $cfg."
796
797         eval "
798         dep_all=\$${cfg}_deps
799         dep_any=\$${cfg}_deps_any
800         dep_con=\$${cfg}_conflict
801         dep_sel=\$${cfg}_select
802         dep_sgs=\$${cfg}_suggest
803         dep_ifa=\$${cfg}_if
804         dep_ifn=\$${cfg}_if_any
805         "
806
807         # most of the time here $cfg has no deps - avoid costly no-op work
808         if [ "$dep_all$dep_any$dep_con$dep_sel$dep_sgs$dep_ifa$dep_ifn" ]; then
809             eval ${cfg}_checking=inprogress
810
811             set -- $cfg "$dep_all" "$dep_any" "$dep_con" "$dep_sel" "$dep_sgs" "$dep_ifa" "$dep_ifn"
812             check_deps $dep_all $dep_any $dep_con $dep_sel $dep_sgs $dep_ifa $dep_ifn
813             cfg=$1; dep_all=$2; dep_any=$3; dep_con=$4; dep_sel=$5 dep_sgs=$6; dep_ifa=$7; dep_ifn=$8
814
815             [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
816             [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
817             enabled_all  $dep_all || { disable_with_reason $cfg "not all dependencies are satisfied: $dep_all"; }
818             enabled_any  $dep_any || { disable_with_reason $cfg "not any dependency is satisfied: $dep_any"; }
819             disabled_all $dep_con || { disable_with_reason $cfg "some conflicting dependencies are unsatisfied: $dep_con"; }
820             disabled_any $dep_sel && { disable_with_reason $cfg "some selected dependency is unsatisfied: $dep_sel"; }
821
822             enabled $cfg && enable_deep_weak $dep_sel $dep_sgs
823
824             for dep in $dep_all $dep_any $dep_sel $dep_sgs; do
825                 # filter out library deps, these do not belong in extralibs
826                 is_in $dep $LIBRARY_LIST && continue
827                 enabled $dep && eval append ${cfg}_extralibs ${dep}_extralibs
828             done
829         fi
830
831         eval ${cfg}_checking=done
832     done
833 }
834
835 print_config(){
836     pfx=$1
837     files=$2
838     shift 2
839     map 'eval echo "$v \${$v:-no}"' "$@" |
840     awk "BEGIN { split(\"$files\", files) }
841         {
842             c = \"$pfx\" toupper(\$1);
843             v = \$2;
844             sub(/yes/, 1, v);
845             sub(/no/,  0, v);
846             for (f in files) {
847                 file = files[f];
848                 if (file ~ /\\.h\$/) {
849                     printf(\"#define %s %d\\n\", c, v) >>file;
850                 } else if (file ~ /\\.asm\$/) {
851                     printf(\"%%define %s %d\\n\", c, v) >>file;
852                 } else if (file ~ /\\.mak\$/) {
853                     n = -v ? \"\" : \"!\";
854                     printf(\"%s%s=yes\\n\", n, c) >>file;
855                 } else if (file ~ /\\.texi\$/) {
856                     pre = -v ? \"\" : \"@c \";
857                     yesno = \$2;
858                     c2 = tolower(c);
859                     gsub(/_/, \"-\", c2);
860                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
861                 }
862             }
863         }"
864 }
865
866 print_enabled(){
867     suf=$1
868     shift
869     for v; do
870         enabled $v && printf "%s\n" ${v%$suf}
871     done
872 }
873
874 append(){
875     var=$1
876     shift
877     eval "$var=\"\$$var $*\""
878 }
879
880 prepend(){
881     var=$1
882     shift
883     eval "$var=\"$* \$$var\""
884 }
885
886 reverse () {
887     eval '
888         reverse_out=
889         for v in $'$1'; do
890             reverse_out="$v $reverse_out"
891         done
892         '$1'=$reverse_out
893     '
894 }
895
896 # keeps the last occurence of each non-unique item
897 unique(){
898     unique_out=
899     eval unique_in=\$$1
900     reverse unique_in
901     for v in $unique_in; do
902         # " $unique_out" +space such that every item is surrounded with spaces
903         case " $unique_out" in *" $v "*) continue; esac  # already in list
904         unique_out="$unique_out$v "
905     done
906     reverse unique_out
907     eval $1=\$unique_out
908 }
909
910 resolve(){
911     resolve_out=
912     eval resolve_in=\$$1
913     for v in $resolve_in; do
914         eval 'resolve_out="$resolve_out$'$v' "'
915     done
916     eval $1=\$resolve_out
917 }
918
919 add_cppflags(){
920     append CPPFLAGS "$@"
921 }
922
923 add_cflags(){
924     append CFLAGS $($cflags_filter "$@")
925 }
926
927 add_cflags_headers(){
928     append CFLAGS_HEADERS $($cflags_filter "$@")
929 }
930
931 add_cxxflags(){
932     append CXXFLAGS $($cflags_filter "$@")
933 }
934
935 add_objcflags(){
936     append OBJCFLAGS $($objcflags_filter "$@")
937 }
938
939 add_asflags(){
940     append ASFLAGS $($asflags_filter "$@")
941 }
942
943 add_ldflags(){
944     append LDFLAGS $($ldflags_filter "$@")
945 }
946
947 add_ldexeflags(){
948     append LDEXEFLAGS $($ldflags_filter "$@")
949 }
950
951 add_ldsoflags(){
952     append LDSOFLAGS $($ldflags_filter "$@")
953 }
954
955 add_extralibs(){
956     prepend extralibs $($ldflags_filter "$@")
957 }
958
959 add_stripflags(){
960     append ASMSTRIPFLAGS "$@"
961 }
962
963 add_host_cppflags(){
964     append host_cppflags "$@"
965 }
966
967 add_host_cflags(){
968     append host_cflags $($host_cflags_filter "$@")
969 }
970
971 add_host_ldflags(){
972     append host_ldflags $($host_ldflags_filter "$@")
973 }
974
975 add_compat(){
976     append compat_objs $1
977     shift
978     map 'add_cppflags -D$v' "$@"
979 }
980
981 test_cmd(){
982     log "$@"
983     "$@" >> $logfile 2>&1
984 }
985
986 test_stat(){
987     log test_stat "$@"
988     stat "$1" >> $logfile 2>&1
989 }
990
991 cc_e(){
992     eval printf '%s\\n' $CC_E
993 }
994
995 cc_o(){
996     eval printf '%s\\n' $CC_O
997 }
998
999 as_o(){
1000     eval printf '%s\\n' $AS_O
1001 }
1002
1003 x86asm_o(){
1004     eval printf '%s\\n' $X86ASM_O
1005 }
1006
1007 ld_o(){
1008     eval printf '%s\\n' $LD_O
1009 }
1010
1011 hostcc_e(){
1012     eval printf '%s\\n' $HOSTCC_E
1013 }
1014
1015 hostcc_o(){
1016     eval printf '%s\\n' $HOSTCC_O
1017 }
1018
1019 nvcc_o(){
1020     eval printf '%s\\n' $NVCC_O
1021 }
1022
1023 test_cc(){
1024     log test_cc "$@"
1025     cat > $TMPC
1026     log_file $TMPC
1027     test_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
1028 }
1029
1030 test_cxx(){
1031     log test_cxx "$@"
1032     cat > $TMPCPP
1033     log_file $TMPCPP
1034     test_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
1035 }
1036
1037 test_objcc(){
1038     log test_objcc "$@"
1039     cat > $TMPM
1040     log_file $TMPM
1041     test_cmd $objcc -Werror=missing-prototypes $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPM
1042 }
1043
1044 test_nvcc(){
1045     log test_nvcc "$@"
1046     cat > $TMPCU
1047     log_file $TMPCU
1048     tmpcu_=$TMPCU
1049     tmpo_=$TMPO
1050     [ -x "$(command -v cygpath)" ] && tmpcu_=$(cygpath -m $tmpcu_) && tmpo_=$(cygpath -m $tmpo_)
1051     test_cmd $nvcc $nvccflags "$@" $NVCC_C $(nvcc_o $tmpo_) $tmpcu_
1052 }
1053
1054 check_nvcc() {
1055     log check_nvcc "$@"
1056     name=$1
1057     shift 1
1058     disabled $name && return
1059     disable $name
1060     test_nvcc "$@" <<EOF && enable $name
1061 extern "C" {
1062     __global__ void hello(unsigned char *data) {}
1063 }
1064 EOF
1065 }
1066
1067 test_cpp(){
1068     log test_cpp "$@"
1069     cat > $TMPC
1070     log_file $TMPC
1071     test_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
1072 }
1073
1074 test_as(){
1075     log test_as "$@"
1076     cat > $TMPS
1077     log_file $TMPS
1078     test_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
1079 }
1080
1081 test_x86asm(){
1082     log test_x86asm "$@"
1083     echo "$1" > $TMPASM
1084     log_file $TMPASM
1085     shift
1086     test_cmd $x86asmexe $X86ASMFLAGS -Werror "$@" $(x86asm_o $TMPO) $TMPASM
1087 }
1088
1089 check_cmd(){
1090     log check_cmd "$@"
1091     cmd=$1
1092     disabled $cmd && return
1093     disable $cmd
1094     test_cmd $@ && enable $cmd
1095 }
1096
1097 check_as(){
1098     log check_as "$@"
1099     name=$1
1100     code=$2
1101     shift 2
1102     disable $name
1103     test_as $@ <<EOF && enable $name
1104 $code
1105 EOF
1106 }
1107
1108 check_inline_asm(){
1109     log check_inline_asm "$@"
1110     name="$1"
1111     code="$2"
1112     shift 2
1113     disable $name
1114     test_cc "$@" <<EOF && enable $name
1115 void foo(void){ __asm__ volatile($code); }
1116 EOF
1117 }
1118
1119 check_inline_asm_flags(){
1120     log check_inline_asm_flags "$@"
1121     name="$1"
1122     code="$2"
1123     flags=''
1124     shift 2
1125     while [ "$1" != "" ]; do
1126       append flags $1
1127       shift
1128     done;
1129     disable $name
1130     cat > $TMPC <<EOF
1131 void foo(void){ __asm__ volatile($code); }
1132 EOF
1133     log_file $TMPC
1134     test_cmd $cc $CPPFLAGS $CFLAGS $flags "$@" $CC_C $(cc_o $TMPO) $TMPC &&
1135     enable $name && add_cflags $flags && add_asflags $flags && add_ldflags $flags
1136 }
1137
1138 check_insn(){
1139     log check_insn "$@"
1140     check_inline_asm ${1}_inline "\"$2\""
1141     check_as ${1}_external "$2"
1142 }
1143
1144 check_x86asm(){
1145     log check_x86asm "$@"
1146     name=$1
1147     shift
1148     disable $name
1149     test_x86asm "$@" && enable $name
1150 }
1151
1152 test_ld(){
1153     log test_ld "$@"
1154     type=$1
1155     shift 1
1156     flags=$(filter_out '-l*|*.so' $@)
1157     libs=$(filter '-l*|*.so' $@)
1158     test_$type $($cflags_filter $flags) || return
1159     flags=$($ldflags_filter $flags)
1160     libs=$($ldflags_filter $libs)
1161     test_cmd $ld $LDFLAGS $LDEXEFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
1162 }
1163
1164 check_ld(){
1165     log check_ld "$@"
1166     type=$1
1167     name=$2
1168     shift 2
1169     disable $name
1170     test_ld $type $@ && enable $name
1171 }
1172
1173 print_include(){
1174     hdr=$1
1175     test "${hdr%.h}" = "${hdr}" &&
1176         echo "#include $hdr"    ||
1177         echo "#include <$hdr>"
1178 }
1179
1180 test_code(){
1181     log test_code "$@"
1182     check=$1
1183     headers=$2
1184     code=$3
1185     shift 3
1186     {
1187         for hdr in $headers; do
1188             print_include $hdr
1189         done
1190         echo "int main(void) { $code; return 0; }"
1191     } | test_$check "$@"
1192 }
1193
1194 check_cppflags(){
1195     log check_cppflags "$@"
1196     test_cpp "$@" <<EOF && append CPPFLAGS "$@"
1197 #include <stdlib.h>
1198 EOF
1199 }
1200
1201 test_cflags(){
1202     log test_cflags "$@"
1203     set -- $($cflags_filter "$@")
1204     test_cc "$@" <<EOF
1205 int x;
1206 EOF
1207 }
1208
1209 check_cflags(){
1210     log check_cflags "$@"
1211     test_cflags "$@" && add_cflags "$@"
1212 }
1213
1214 check_cxxflags(){
1215     log check_cxxflags "$@"
1216     set -- $($cflags_filter "$@")
1217     test_cxx "$@" <<EOF && append CXXFLAGS "$@"
1218 int x;
1219 EOF
1220 }
1221
1222 test_objcflags(){
1223     log test_objcflags "$@"
1224     set -- $($objcflags_filter "$@")
1225     test_objcc "$@" <<EOF
1226 int x;
1227 EOF
1228 }
1229
1230 check_objcflags(){
1231     log check_objcflags "$@"
1232     test_objcflags "$@" && add_objcflags "$@"
1233 }
1234
1235 test_ldflags(){
1236     log test_ldflags "$@"
1237     set -- $($ldflags_filter "$@")
1238     test_ld "cc" "$@" <<EOF
1239 int main(void){ return 0; }
1240 EOF
1241 }
1242
1243 check_ldflags(){
1244     log check_ldflags "$@"
1245     test_ldflags "$@" && add_ldflags "$@"
1246 }
1247
1248 test_stripflags(){
1249     log test_stripflags "$@"
1250     # call test_cc to get a fresh TMPO
1251     test_cc <<EOF
1252 int main(void) { return 0; }
1253 EOF
1254     test_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
1255 }
1256
1257 check_stripflags(){
1258     log check_stripflags "$@"
1259     test_stripflags "$@" && add_stripflags "$@"
1260 }
1261
1262 check_headers(){
1263     log check_headers "$@"
1264     headers=$1
1265     shift
1266     disable_sanitized $headers
1267     {
1268         for hdr in $headers; do
1269             print_include $hdr
1270         done
1271         echo "int x;"
1272     } | test_cpp "$@" && enable_sanitized $headers
1273 }
1274
1275 check_header_objcc(){
1276     log check_header_objcc "$@"
1277     rm -f -- "$TMPO"
1278     header=$1
1279     shift
1280     disable_sanitized $header
1281     {
1282        echo "#include <$header>"
1283        echo "int main(void) { return 0; }"
1284     } | test_objcc && test_stat "$TMPO" && enable_sanitized $header
1285 }
1286
1287 check_apple_framework(){
1288     log check_apple_framework "$@"
1289     framework="$1"
1290     name="$(tolower $framework)"
1291     header="${framework}/${framework}.h"
1292     disable $name
1293     check_header_objcc $header &&
1294         enable $name && eval ${name}_extralibs='"-framework $framework"'
1295 }
1296
1297 check_func(){
1298     log check_func "$@"
1299     func=$1
1300     shift
1301     disable $func
1302     test_ld "cc" "$@" <<EOF && enable $func
1303 extern int $func();
1304 int main(void){ $func(); }
1305 EOF
1306 }
1307
1308 check_complexfunc(){
1309     log check_complexfunc "$@"
1310     func=$1
1311     narg=$2
1312     shift 2
1313     test $narg = 2 && args="f, g" || args="f * I"
1314     disable $func
1315     test_ld "cc" "$@" <<EOF && enable $func
1316 #include <complex.h>
1317 #include <math.h>
1318 float foo(complex float f, complex float g) { return $func($args); }
1319 int main(void){ return (int) foo; }
1320 EOF
1321 }
1322
1323 check_mathfunc(){
1324     log check_mathfunc "$@"
1325     func=$1
1326     narg=$2
1327     shift 2
1328     test $narg = 2 && args="f, g" || args="f"
1329     disable $func
1330     test_ld "cc" "$@" <<EOF && enable $func
1331 #include <math.h>
1332 float foo(float f, float g) { return $func($args); }
1333 int main(void){ return (int) foo; }
1334 EOF
1335 }
1336
1337 check_func_headers(){
1338     log check_func_headers "$@"
1339     headers=$1
1340     funcs=$2
1341     shift 2
1342     {
1343         for hdr in $headers; do
1344             print_include $hdr
1345         done
1346         echo "#include <stdint.h>"
1347         for func in $funcs; do
1348             echo "long check_$func(void) { return (long) $func; }"
1349         done
1350         echo "int main(void) { int ret = 0;"
1351         # LTO could optimize out the test functions without this
1352         for func in $funcs; do
1353             echo " ret |= ((intptr_t)check_$func) & 0xFFFF;"
1354         done
1355         echo "return ret; }"
1356     } | test_ld "cc" "$@" && enable $funcs && enable_sanitized $headers
1357 }
1358
1359 check_class_headers_cpp(){
1360     log check_class_headers_cpp "$@"
1361     headers=$1
1362     classes=$2
1363     shift 2
1364     {
1365         for hdr in $headers; do
1366             echo "#include <$hdr>"
1367         done
1368         echo "int main(void) { "
1369         i=1
1370         for class in $classes; do
1371             echo "$class obj$i;"
1372             i=$(expr $i + 1)
1373         done
1374         echo "return 0; }"
1375     } | test_ld "cxx" "$@" && enable $funcs && enable_sanitized $headers
1376 }
1377
1378 test_cpp_condition(){
1379     log test_cpp_condition "$@"
1380     header=$1
1381     condition=$2
1382     shift 2
1383     test_cpp "$@" <<EOF
1384 #include <$header>
1385 #if !($condition)
1386 #error "unsatisfied condition: $condition"
1387 #endif
1388 EOF
1389 }
1390
1391 check_cpp_condition(){
1392     log check_cpp_condition "$@"
1393     name=$1
1394     shift 1
1395     disable $name
1396     test_cpp_condition "$@" && enable $name
1397 }
1398
1399 test_cflags_cc(){
1400     log test_cflags_cc "$@"
1401     flags=$1
1402     header=$2
1403     condition=$3
1404     shift 3
1405     set -- $($cflags_filter "$flags")
1406     test_cc "$@" <<EOF
1407 #include <$header>
1408 #if !($condition)
1409 #error "unsatisfied condition: $condition"
1410 #endif
1411 EOF
1412 }
1413
1414 check_lib(){
1415     log check_lib "$@"
1416     name="$1"
1417     headers="$2"
1418     funcs="$3"
1419     shift 3
1420     disable $name
1421     check_func_headers "$headers" "$funcs" "$@" &&
1422         enable $name && eval ${name}_extralibs="\$@"
1423 }
1424
1425 check_lib_cpp(){
1426     log check_lib_cpp "$@"
1427     name="$1"
1428     headers="$2"
1429     classes="$3"
1430     shift 3
1431     disable $name
1432     check_class_headers_cpp "$headers" "$classes" "$@" &&
1433         enable $name && eval ${name}_extralibs="\$@"
1434 }
1435
1436 test_pkg_config(){
1437     log test_pkg_config "$@"
1438     name="$1"
1439     pkg_version="$2"
1440     pkg="${2%% *}"
1441     headers="$3"
1442     funcs="$4"
1443     shift 4
1444     disable $name
1445     test_cmd $pkg_config --exists --print-errors $pkg_version || return
1446     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1447     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1448     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1449         enable $name &&
1450         set_sanitized "${name}_cflags"    $pkg_cflags &&
1451         set_sanitized "${name}_extralibs" $pkg_libs
1452 }
1453
1454 check_pkg_config(){
1455     log check_pkg_config "$@"
1456     name="$1"
1457     test_pkg_config "$@" &&
1458         eval add_cflags \$${name}_cflags
1459 }
1460
1461 test_exec(){
1462     test_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1463 }
1464
1465 check_exec_crash(){
1466     log check_exec_crash "$@"
1467     code=$(cat)
1468
1469     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1470     # are safe but may not be available everywhere.  Thus we use
1471     # raise(SIGTERM) instead.  The check is run in a subshell so we
1472     # can redirect the "Terminated" message from the shell.  SIGBUS
1473     # is not defined by standard C so it is used conditionally.
1474
1475     (test_exec "$@") >> $logfile 2>&1 <<EOF
1476 #include <signal.h>
1477 static void sighandler(int sig){
1478     raise(SIGTERM);
1479 }
1480 int foo(void){
1481     $code
1482 }
1483 int (*func_ptr)(void) = foo;
1484 int main(void){
1485     signal(SIGILL, sighandler);
1486     signal(SIGFPE, sighandler);
1487     signal(SIGSEGV, sighandler);
1488 #ifdef SIGBUS
1489     signal(SIGBUS, sighandler);
1490 #endif
1491     return func_ptr();
1492 }
1493 EOF
1494 }
1495
1496 check_type(){
1497     log check_type "$@"
1498     headers=$1
1499     type=$2
1500     shift 2
1501     disable_sanitized "$type"
1502     test_code cc "$headers" "$type v" "$@" && enable_sanitized "$type"
1503 }
1504
1505 check_struct(){
1506     log check_struct "$@"
1507     headers=$1
1508     struct=$2
1509     member=$3
1510     shift 3
1511     disable_sanitized "${struct}_${member}"
1512     test_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1513         enable_sanitized "${struct}_${member}"
1514 }
1515
1516 check_builtin(){
1517     log check_builtin "$@"
1518     name=$1
1519     headers=$2
1520     builtin=$3
1521     shift 3
1522     disable "$name"
1523     test_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1524 }
1525
1526 check_compile_assert(){
1527     log check_compile_assert "$@"
1528     name=$1
1529     headers=$2
1530     condition=$3
1531     shift 3
1532     disable "$name"
1533     test_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1534 }
1535
1536 check_cc(){
1537     log check_cc "$@"
1538     name=$1
1539     shift
1540     disable "$name"
1541     test_code cc "$@" && enable "$name"
1542 }
1543
1544 require(){
1545     log require "$@"
1546     name_version="$1"
1547     name="${1%% *}"
1548     shift
1549     check_lib $name "$@" || die "ERROR: $name_version not found"
1550 }
1551
1552 require_cc(){
1553     log require_cc "$@"
1554     name="$1"
1555     check_cc "$@" || die "ERROR: $name failed"
1556 }
1557
1558 require_cpp(){
1559     log require_cpp "$@"
1560     name_version="$1"
1561     name="${1%% *}"
1562     shift
1563     check_lib_cpp "$name" "$@" || die "ERROR: $name_version not found"
1564 }
1565
1566 require_headers(){
1567     log require_headers "$@"
1568     headers="$1"
1569     check_headers "$@" || die "ERROR: $headers not found"
1570 }
1571
1572 require_cpp_condition(){
1573     log require_cpp_condition "$@"
1574     condition="$3"
1575     check_cpp_condition "$@" || die "ERROR: $condition not satisfied"
1576 }
1577
1578 require_pkg_config(){
1579     log require_pkg_config "$@"
1580     pkg_version="$2"
1581     check_pkg_config "$@" || die "ERROR: $pkg_version not found using pkg-config$pkg_config_fail_message"
1582 }
1583
1584 test_host_cc(){
1585     log test_host_cc "$@"
1586     cat > $TMPC
1587     log_file $TMPC
1588     test_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1589 }
1590
1591 test_host_cpp(){
1592     log test_host_cpp "$@"
1593     cat > $TMPC
1594     log_file $TMPC
1595     test_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1596 }
1597
1598 check_host_cppflags(){
1599     log check_host_cppflags "$@"
1600     test_host_cpp "$@" <<EOF && append host_cppflags "$@"
1601 #include <stdlib.h>
1602 EOF
1603 }
1604
1605 check_host_cflags(){
1606     log check_host_cflags "$@"
1607     set -- $($host_cflags_filter "$@")
1608     test_host_cc "$@" <<EOF && append host_cflags "$@"
1609 int x;
1610 EOF
1611 }
1612
1613 test_host_cpp_condition(){
1614     log test_host_cpp_condition "$@"
1615     header=$1
1616     condition=$2
1617     shift 2
1618     test_host_cpp "$@" <<EOF
1619 #include <$header>
1620 #if !($condition)
1621 #error "unsatisfied condition: $condition"
1622 #endif
1623 EOF
1624 }
1625
1626 check_host_cpp_condition(){
1627     log check_host_cpp_condition "$@"
1628     name=$1
1629     shift 1
1630     disable $name
1631     test_host_cpp_condition "$@" && enable $name
1632 }
1633
1634 cp_if_changed(){
1635     cmp -s "$1" "$2" && { test "$quiet" != "yes" && echo "$2 is unchanged"; } && return
1636     mkdir -p "$(dirname $2)"
1637     cp -f "$1" "$2"
1638 }
1639
1640 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1641 # system-dependent things.
1642
1643 AVCODEC_COMPONENTS="
1644     bsfs
1645     decoders
1646     encoders
1647     hwaccels
1648     parsers
1649 "
1650
1651 AVDEVICE_COMPONENTS="
1652     indevs
1653     outdevs
1654 "
1655
1656 AVFILTER_COMPONENTS="
1657     filters
1658 "
1659
1660 AVFORMAT_COMPONENTS="
1661     demuxers
1662     muxers
1663     protocols
1664 "
1665
1666 COMPONENT_LIST="
1667     $AVCODEC_COMPONENTS
1668     $AVDEVICE_COMPONENTS
1669     $AVFILTER_COMPONENTS
1670     $AVFORMAT_COMPONENTS
1671 "
1672
1673 EXAMPLE_LIST="
1674     avio_list_dir_example
1675     avio_reading_example
1676     decode_audio_example
1677     decode_video_example
1678     demuxing_decoding_example
1679     encode_audio_example
1680     encode_video_example
1681     extract_mvs_example
1682     filter_audio_example
1683     filtering_audio_example
1684     filtering_video_example
1685     http_multiclient_example
1686     hw_decode_example
1687     metadata_example
1688     muxing_example
1689     qsvdec_example
1690     remuxing_example
1691     resampling_audio_example
1692     scaling_video_example
1693     transcode_aac_example
1694     transcoding_example
1695     vaapi_encode_example
1696     vaapi_transcode_example
1697 "
1698
1699 EXTERNAL_AUTODETECT_LIBRARY_LIST="
1700     alsa
1701     appkit
1702     avfoundation
1703     bzlib
1704     coreimage
1705     iconv
1706     libxcb
1707     libxcb_shm
1708     libxcb_shape
1709     libxcb_xfixes
1710     lzma
1711     mediafoundation
1712     schannel
1713     sdl2
1714     securetransport
1715     sndio
1716     xlib
1717     zlib
1718 "
1719
1720 EXTERNAL_LIBRARY_GPL_LIST="
1721     avisynth
1722     frei0r
1723     libcdio
1724     libdavs2
1725     librubberband
1726     libvidstab
1727     libx264
1728     libx265
1729     libxavs
1730     libxavs2
1731     libxvid
1732 "
1733
1734 EXTERNAL_LIBRARY_NONFREE_LIST="
1735     decklink
1736     libfdk_aac
1737     openssl
1738     libtls
1739 "
1740
1741 EXTERNAL_LIBRARY_VERSION3_LIST="
1742     gmp
1743     libaribb24
1744     liblensfun
1745     libopencore_amrnb
1746     libopencore_amrwb
1747     libvo_amrwbenc
1748     mbedtls
1749     rkmpp
1750 "
1751
1752 EXTERNAL_LIBRARY_GPLV3_LIST="
1753     libsmbclient
1754 "
1755
1756 EXTERNAL_LIBRARY_LIST="
1757     $EXTERNAL_LIBRARY_GPL_LIST
1758     $EXTERNAL_LIBRARY_NONFREE_LIST
1759     $EXTERNAL_LIBRARY_VERSION3_LIST
1760     $EXTERNAL_LIBRARY_GPLV3_LIST
1761     chromaprint
1762     gcrypt
1763     gnutls
1764     jni
1765     ladspa
1766     libaom
1767     libass
1768     libbluray
1769     libbs2b
1770     libcaca
1771     libcelt
1772     libcodec2
1773     libdav1d
1774     libdc1394
1775     libdrm
1776     libflite
1777     libfontconfig
1778     libfreetype
1779     libfribidi
1780     libglslang
1781     libgme
1782     libgsm
1783     libiec61883
1784     libilbc
1785     libjack
1786     libklvanc
1787     libkvazaar
1788     libmodplug
1789     libmp3lame
1790     libmysofa
1791     libopencv
1792     libopenh264
1793     libopenjpeg
1794     libopenmpt
1795     libopenvino
1796     libopus
1797     libpulse
1798     librabbitmq
1799     librav1e
1800     librsvg
1801     librtmp
1802     libshine
1803     libsmbclient
1804     libsnappy
1805     libsoxr
1806     libspeex
1807     libsrt
1808     libssh
1809     libsvtav1
1810     libtensorflow
1811     libtesseract
1812     libtheora
1813     libtwolame
1814     libv4l2
1815     libvmaf
1816     libvorbis
1817     libvpx
1818     libwavpack
1819     libwebp
1820     libxml2
1821     libzimg
1822     libzmq
1823     libzvbi
1824     lv2
1825     mediacodec
1826     openal
1827     opengl
1828     pocketsphinx
1829     vapoursynth
1830 "
1831
1832 HWACCEL_AUTODETECT_LIBRARY_LIST="
1833     amf
1834     audiotoolbox
1835     crystalhd
1836     cuda
1837     cuda_llvm
1838     cuvid
1839     d3d11va
1840     dxva2
1841     ffnvcodec
1842     nvdec
1843     nvenc
1844     vaapi
1845     vdpau
1846     videotoolbox
1847     v4l2_m2m
1848     xvmc
1849 "
1850
1851 # catchall list of things that require external libs to link
1852 EXTRALIBS_LIST="
1853     cpu_init
1854     cws2fws
1855 "
1856
1857 HWACCEL_LIBRARY_NONFREE_LIST="
1858     cuda_nvcc
1859     cuda_sdk
1860     libnpp
1861 "
1862
1863 HWACCEL_LIBRARY_LIST="
1864     $HWACCEL_LIBRARY_NONFREE_LIST
1865     libmfx
1866     mmal
1867     omx
1868     opencl
1869     vulkan
1870 "
1871
1872 DOCUMENT_LIST="
1873     doc
1874     htmlpages
1875     manpages
1876     podpages
1877     txtpages
1878 "
1879
1880 FEATURE_LIST="
1881     ftrapv
1882     gray
1883     hardcoded_tables
1884     omx_rpi
1885     runtime_cpudetect
1886     safe_bitstream_reader
1887     shared
1888     small
1889     static
1890     swscale_alpha
1891 "
1892
1893 # this list should be kept in linking order
1894 LIBRARY_LIST="
1895     avdevice
1896     avfilter
1897     swscale
1898     postproc
1899     avformat
1900     avcodec
1901     swresample
1902     avresample
1903     avutil
1904 "
1905
1906 LICENSE_LIST="
1907     gpl
1908     nonfree
1909     version3
1910 "
1911
1912 PROGRAM_LIST="
1913     ffplay
1914     ffprobe
1915     ffmpeg
1916 "
1917
1918 SUBSYSTEM_LIST="
1919     dct
1920     dwt
1921     error_resilience
1922     faan
1923     fast_unaligned
1924     fft
1925     lsp
1926     lzo
1927     mdct
1928     pixelutils
1929     network
1930     rdft
1931 "
1932
1933 # COMPONENT_LIST needs to come last to ensure correct dependency checking
1934 CONFIG_LIST="
1935     $DOCUMENT_LIST
1936     $EXAMPLE_LIST
1937     $EXTERNAL_LIBRARY_LIST
1938     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1939     $HWACCEL_LIBRARY_LIST
1940     $HWACCEL_AUTODETECT_LIBRARY_LIST
1941     $FEATURE_LIST
1942     $LICENSE_LIST
1943     $LIBRARY_LIST
1944     $PROGRAM_LIST
1945     $SUBSYSTEM_LIST
1946     autodetect
1947     fontconfig
1948     large_tests
1949     linux_perf
1950     memory_poisoning
1951     neon_clobber_test
1952     ossfuzz
1953     pic
1954     thumb
1955     valgrind_backtrace
1956     xmm_clobber_test
1957     $COMPONENT_LIST
1958 "
1959
1960 THREADS_LIST="
1961     pthreads
1962     os2threads
1963     w32threads
1964 "
1965
1966 ATOMICS_LIST="
1967     atomics_gcc
1968     atomics_suncc
1969     atomics_win32
1970 "
1971
1972 AUTODETECT_LIBS="
1973     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1974     $HWACCEL_AUTODETECT_LIBRARY_LIST
1975     $THREADS_LIST
1976 "
1977
1978 ARCH_LIST="
1979     aarch64
1980     alpha
1981     arm
1982     avr32
1983     avr32_ap
1984     avr32_uc
1985     bfin
1986     ia64
1987     m68k
1988     mips
1989     mips64
1990     parisc
1991     ppc
1992     ppc64
1993     s390
1994     sh4
1995     sparc
1996     sparc64
1997     tilegx
1998     tilepro
1999     tomi
2000     x86
2001     x86_32
2002     x86_64
2003 "
2004
2005 ARCH_EXT_LIST_ARM="
2006     armv5te
2007     armv6
2008     armv6t2
2009     armv8
2010     neon
2011     vfp
2012     vfpv3
2013     setend
2014 "
2015
2016 ARCH_EXT_LIST_MIPS="
2017     mipsfpu
2018     mips32r2
2019     mips32r5
2020     mips64r2
2021     mips32r6
2022     mips64r6
2023     mipsdsp
2024     mipsdspr2
2025     msa
2026     msa2
2027 "
2028
2029 ARCH_EXT_LIST_LOONGSON="
2030     loongson2
2031     loongson3
2032     mmi
2033 "
2034
2035 ARCH_EXT_LIST_X86_SIMD="
2036     aesni
2037     amd3dnow
2038     amd3dnowext
2039     avx
2040     avx2
2041     avx512
2042     fma3
2043     fma4
2044     mmx
2045     mmxext
2046     sse
2047     sse2
2048     sse3
2049     sse4
2050     sse42
2051     ssse3
2052     xop
2053 "
2054
2055 ARCH_EXT_LIST_PPC="
2056     altivec
2057     dcbzl
2058     ldbrx
2059     power8
2060     ppc4xx
2061     vsx
2062 "
2063
2064 ARCH_EXT_LIST_X86="
2065     $ARCH_EXT_LIST_X86_SIMD
2066     cpunop
2067     i686
2068 "
2069
2070 ARCH_EXT_LIST="
2071     $ARCH_EXT_LIST_ARM
2072     $ARCH_EXT_LIST_PPC
2073     $ARCH_EXT_LIST_X86
2074     $ARCH_EXT_LIST_MIPS
2075     $ARCH_EXT_LIST_LOONGSON
2076 "
2077
2078 ARCH_FEATURES="
2079     aligned_stack
2080     fast_64bit
2081     fast_clz
2082     fast_cmov
2083     local_aligned
2084     simd_align_16
2085     simd_align_32
2086     simd_align_64
2087 "
2088
2089 BUILTIN_LIST="
2090     atomic_cas_ptr
2091     machine_rw_barrier
2092     MemoryBarrier
2093     mm_empty
2094     rdtsc
2095     sem_timedwait
2096     sync_val_compare_and_swap
2097 "
2098 HAVE_LIST_CMDLINE="
2099     inline_asm
2100     symver
2101     x86asm
2102 "
2103
2104 HAVE_LIST_PUB="
2105     bigendian
2106     fast_unaligned
2107 "
2108
2109 HEADERS_LIST="
2110     arpa_inet_h
2111     asm_types_h
2112     cdio_paranoia_h
2113     cdio_paranoia_paranoia_h
2114     cuda_h
2115     dispatch_dispatch_h
2116     dev_bktr_ioctl_bt848_h
2117     dev_bktr_ioctl_meteor_h
2118     dev_ic_bt8xx_h
2119     dev_video_bktr_ioctl_bt848_h
2120     dev_video_meteor_ioctl_meteor_h
2121     direct_h
2122     dirent_h
2123     dxgidebug_h
2124     dxva_h
2125     ES2_gl_h
2126     gsm_h
2127     io_h
2128     linux_perf_event_h
2129     machine_ioctl_bt848_h
2130     machine_ioctl_meteor_h
2131     malloc_h
2132     opencv2_core_core_c_h
2133     OpenGL_gl3_h
2134     poll_h
2135     sys_param_h
2136     sys_resource_h
2137     sys_select_h
2138     sys_soundcard_h
2139     sys_time_h
2140     sys_un_h
2141     sys_videoio_h
2142     termios_h
2143     udplite_h
2144     unistd_h
2145     valgrind_valgrind_h
2146     windows_h
2147     winsock2_h
2148 "
2149
2150 INTRINSICS_LIST="
2151     intrinsics_neon
2152 "
2153
2154 COMPLEX_FUNCS="
2155     cabs
2156     cexp
2157 "
2158
2159 MATH_FUNCS="
2160     atanf
2161     atan2f
2162     cbrt
2163     cbrtf
2164     copysign
2165     cosf
2166     erf
2167     exp2
2168     exp2f
2169     expf
2170     hypot
2171     isfinite
2172     isinf
2173     isnan
2174     ldexpf
2175     llrint
2176     llrintf
2177     log2
2178     log2f
2179     log10f
2180     lrint
2181     lrintf
2182     powf
2183     rint
2184     round
2185     roundf
2186     sinf
2187     trunc
2188     truncf
2189 "
2190
2191 SYSTEM_FEATURES="
2192     dos_paths
2193     libc_msvcrt
2194     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
2195     section_data_rel_ro
2196     threads
2197     uwp
2198     winrt
2199 "
2200
2201 SYSTEM_FUNCS="
2202     access
2203     aligned_malloc
2204     arc4random
2205     clock_gettime
2206     closesocket
2207     CommandLineToArgvW
2208     fcntl
2209     getaddrinfo
2210     gethrtime
2211     getopt
2212     GetModuleHandle
2213     GetProcessAffinityMask
2214     GetProcessMemoryInfo
2215     GetProcessTimes
2216     getrusage
2217     GetStdHandle
2218     GetSystemTimeAsFileTime
2219     gettimeofday
2220     glob
2221     glXGetProcAddress
2222     gmtime_r
2223     inet_aton
2224     isatty
2225     kbhit
2226     localtime_r
2227     lstat
2228     lzo1x_999_compress
2229     mach_absolute_time
2230     MapViewOfFile
2231     memalign
2232     mkstemp
2233     mmap
2234     mprotect
2235     nanosleep
2236     PeekNamedPipe
2237     posix_memalign
2238     pthread_cancel
2239     sched_getaffinity
2240     SecItemImport
2241     SetConsoleTextAttribute
2242     SetConsoleCtrlHandler
2243     SetDllDirectory
2244     setmode
2245     setrlimit
2246     Sleep
2247     strerror_r
2248     sysconf
2249     sysctl
2250     usleep
2251     UTGetOSTypeFromString
2252     VirtualAlloc
2253     wglGetProcAddress
2254 "
2255
2256 SYSTEM_LIBRARIES="
2257     bcrypt
2258     vaapi_drm
2259     vaapi_x11
2260     vdpau_x11
2261 "
2262
2263 TOOLCHAIN_FEATURES="
2264     as_arch_directive
2265     as_dn_directive
2266     as_fpu_directive
2267     as_func
2268     as_object_arch
2269     asm_mod_q
2270     blocks_extension
2271     ebp_available
2272     ebx_available
2273     gnu_as
2274     gnu_windres
2275     ibm_asm
2276     inline_asm_direct_symbol_refs
2277     inline_asm_labels
2278     inline_asm_nonlocal_labels
2279     pragma_deprecated
2280     rsync_contimeout
2281     symver_asm_label
2282     symver_gnu_asm
2283     vfp_args
2284     xform_asm
2285     xmm_clobbers
2286 "
2287
2288 TYPES_LIST="
2289     kCMVideoCodecType_HEVC
2290     kCVPixelFormatType_420YpCbCr10BiPlanarVideoRange
2291     kCVImageBufferTransferFunction_SMPTE_ST_2084_PQ
2292     kCVImageBufferTransferFunction_ITU_R_2100_HLG
2293     kCVImageBufferTransferFunction_Linear
2294     socklen_t
2295     struct_addrinfo
2296     struct_group_source_req
2297     struct_ip_mreq_source
2298     struct_ipv6_mreq
2299     struct_msghdr_msg_flags
2300     struct_pollfd
2301     struct_rusage_ru_maxrss
2302     struct_sctp_event_subscribe
2303     struct_sockaddr_in6
2304     struct_sockaddr_sa_len
2305     struct_sockaddr_storage
2306     struct_stat_st_mtim_tv_nsec
2307     struct_v4l2_frmivalenum_discrete
2308 "
2309
2310 HAVE_LIST="
2311     $ARCH_EXT_LIST
2312     $(add_suffix _external $ARCH_EXT_LIST)
2313     $(add_suffix _inline   $ARCH_EXT_LIST)
2314     $ARCH_FEATURES
2315     $BUILTIN_LIST
2316     $COMPLEX_FUNCS
2317     $HAVE_LIST_CMDLINE
2318     $HAVE_LIST_PUB
2319     $HEADERS_LIST
2320     $INTRINSICS_LIST
2321     $MATH_FUNCS
2322     $SYSTEM_FEATURES
2323     $SYSTEM_FUNCS
2324     $SYSTEM_LIBRARIES
2325     $THREADS_LIST
2326     $TOOLCHAIN_FEATURES
2327     $TYPES_LIST
2328     libdrm_getfb2
2329     makeinfo
2330     makeinfo_html
2331     opencl_d3d11
2332     opencl_drm_arm
2333     opencl_drm_beignet
2334     opencl_dxva2
2335     opencl_vaapi_beignet
2336     opencl_vaapi_intel_media
2337     perl
2338     pod2man
2339     texi2html
2340 "
2341
2342 # options emitted with CONFIG_ prefix but not available on the command line
2343 CONFIG_EXTRA="
2344     aandcttables
2345     ac3dsp
2346     adts_header
2347     atsc_a53
2348     audio_frame_queue
2349     audiodsp
2350     blockdsp
2351     bswapdsp
2352     cabac
2353     cbs
2354     cbs_av1
2355     cbs_h264
2356     cbs_h265
2357     cbs_jpeg
2358     cbs_mpeg2
2359     cbs_vp9
2360     dirac_parse
2361     dnn
2362     dvprofile
2363     exif
2364     faandct
2365     faanidct
2366     fdctdsp
2367     flacdsp
2368     fmtconvert
2369     frame_thread_encoder
2370     g722dsp
2371     golomb
2372     gplv3
2373     h263dsp
2374     h264chroma
2375     h264dsp
2376     h264parse
2377     h264pred
2378     h264qpel
2379     hevcparse
2380     hpeldsp
2381     huffman
2382     huffyuvdsp
2383     huffyuvencdsp
2384     idctdsp
2385     iirfilter
2386     mdct15
2387     intrax8
2388     iso_media
2389     ividsp
2390     jpegtables
2391     lgplv3
2392     libx262
2393     llauddsp
2394     llviddsp
2395     llvidencdsp
2396     lpc
2397     lzf
2398     me_cmp
2399     mpeg_er
2400     mpegaudio
2401     mpegaudiodsp
2402     mpegaudioheader
2403     mpegvideo
2404     mpegvideoenc
2405     mss34dsp
2406     pixblockdsp
2407     qpeldsp
2408     qsv
2409     qsvdec
2410     qsvenc
2411     qsvvpp
2412     rangecoder
2413     riffdec
2414     riffenc
2415     rtpdec
2416     rtpenc_chain
2417     rv34dsp
2418     scene_sad
2419     sinewin
2420     snappy
2421     srtp
2422     startcode
2423     texturedsp
2424     texturedspenc
2425     tpeldsp
2426     vaapi_1
2427     vaapi_encode
2428     vc1dsp
2429     videodsp
2430     vp3dsp
2431     vp56dsp
2432     vp8dsp
2433     wma_freqs
2434     wmv2dsp
2435 "
2436
2437 CMDLINE_SELECT="
2438     $ARCH_EXT_LIST
2439     $CONFIG_LIST
2440     $HAVE_LIST_CMDLINE
2441     $THREADS_LIST
2442     asm
2443     cross_compile
2444     debug
2445     extra_warnings
2446     logging
2447     lto
2448     optimizations
2449     rpath
2450     stripping
2451 "
2452
2453 PATHS_LIST="
2454     bindir
2455     datadir
2456     docdir
2457     incdir
2458     libdir
2459     mandir
2460     pkgconfigdir
2461     prefix
2462     shlibdir
2463     install_name_dir
2464 "
2465
2466 CMDLINE_SET="
2467     $PATHS_LIST
2468     ar
2469     arch
2470     as
2471     assert_level
2472     build_suffix
2473     cc
2474     objcc
2475     cpu
2476     cross_prefix
2477     custom_allocator
2478     cxx
2479     dep_cc
2480     doxygen
2481     env
2482     extra_version
2483     gas
2484     host_cc
2485     host_cflags
2486     host_extralibs
2487     host_ld
2488     host_ldflags
2489     host_os
2490     ignore_tests
2491     install
2492     ld
2493     ln_s
2494     logfile
2495     malloc_prefix
2496     nm
2497     optflags
2498     nvcc
2499     nvccflags
2500     pkg_config
2501     pkg_config_flags
2502     progs_suffix
2503     random_seed
2504     ranlib
2505     samples
2506     strip
2507     sws_max_filter_size
2508     sysinclude
2509     sysroot
2510     target_exec
2511     target_os
2512     target_path
2513     target_samples
2514     tempprefix
2515     toolchain
2516     valgrind
2517     windres
2518     x86asmexe
2519 "
2520
2521 CMDLINE_APPEND="
2522     extra_cflags
2523     extra_cxxflags
2524     extra_objcflags
2525     host_cppflags
2526 "
2527
2528 # code dependency declarations
2529
2530 # architecture extensions
2531
2532 armv5te_deps="arm"
2533 armv6_deps="arm"
2534 armv6t2_deps="arm"
2535 armv8_deps="aarch64"
2536 neon_deps_any="aarch64 arm"
2537 intrinsics_neon_deps="neon"
2538 vfp_deps_any="aarch64 arm"
2539 vfpv3_deps="vfp"
2540 setend_deps="arm"
2541
2542 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2543
2544 altivec_deps="ppc"
2545 dcbzl_deps="ppc"
2546 ldbrx_deps="ppc"
2547 ppc4xx_deps="ppc"
2548 vsx_deps="altivec"
2549 power8_deps="vsx"
2550
2551 loongson2_deps="mips"
2552 loongson3_deps="mips"
2553 mips32r2_deps="mips"
2554 mips32r5_deps="mips"
2555 mips32r6_deps="mips"
2556 mips64r2_deps="mips"
2557 mips64r6_deps="mips"
2558 mipsfpu_deps="mips"
2559 mipsdsp_deps="mips"
2560 mipsdspr2_deps="mips"
2561 mmi_deps_any="loongson2 loongson3"
2562 msa_deps="mipsfpu"
2563 msa2_deps="msa"
2564
2565 cpunop_deps="i686"
2566 x86_64_select="i686"
2567 x86_64_suggest="fast_cmov"
2568
2569 amd3dnow_deps="mmx"
2570 amd3dnowext_deps="amd3dnow"
2571 i686_deps="x86"
2572 mmx_deps="x86"
2573 mmxext_deps="mmx"
2574 sse_deps="mmxext"
2575 sse2_deps="sse"
2576 sse3_deps="sse2"
2577 ssse3_deps="sse3"
2578 sse4_deps="ssse3"
2579 sse42_deps="sse4"
2580 aesni_deps="sse42"
2581 avx_deps="sse42"
2582 xop_deps="avx"
2583 fma3_deps="avx"
2584 fma4_deps="avx"
2585 avx2_deps="avx"
2586 avx512_deps="avx2"
2587
2588 mmx_external_deps="x86asm"
2589 mmx_inline_deps="inline_asm x86"
2590 mmx_suggest="mmx_external mmx_inline"
2591
2592 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2593     eval dep=\$${ext}_deps
2594     eval ${ext}_external_deps='"${dep}_external"'
2595     eval ${ext}_inline_deps='"${dep}_inline"'
2596     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2597 done
2598
2599 aligned_stack_if_any="aarch64 ppc x86"
2600 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2601 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2602 fast_unaligned_if_any="aarch64 ppc x86"
2603 simd_align_16_if_any="altivec neon sse"
2604 simd_align_32_if_any="avx"
2605 simd_align_64_if_any="avx512"
2606
2607 # system capabilities
2608 linux_perf_deps="linux_perf_event_h"
2609 symver_if_any="symver_asm_label symver_gnu_asm"
2610 valgrind_backtrace_conflict="optimizations"
2611 valgrind_backtrace_deps="valgrind_valgrind_h"
2612
2613 # threading support
2614 atomics_gcc_if="sync_val_compare_and_swap"
2615 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2616 atomics_win32_if="MemoryBarrier"
2617 atomics_native_if_any="$ATOMICS_LIST"
2618 w32threads_deps="atomics_native"
2619 threads_if_any="$THREADS_LIST"
2620
2621 # subsystems
2622 cbs_av1_select="cbs"
2623 cbs_h264_select="cbs"
2624 cbs_h265_select="cbs"
2625 cbs_jpeg_select="cbs"
2626 cbs_mpeg2_select="cbs"
2627 cbs_vp9_select="cbs"
2628 dct_select="rdft"
2629 dirac_parse_select="golomb"
2630 dnn_suggest="libtensorflow libopenvino"
2631 error_resilience_select="me_cmp"
2632 faandct_deps="faan"
2633 faandct_select="fdctdsp"
2634 faanidct_deps="faan"
2635 faanidct_select="idctdsp"
2636 h264dsp_select="startcode"
2637 hevcparse_select="golomb"
2638 frame_thread_encoder_deps="encoders threads"
2639 intrax8_select="blockdsp idctdsp"
2640 mdct_select="fft"
2641 mdct15_select="fft"
2642 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2643 mpeg_er_select="error_resilience"
2644 mpegaudio_select="mpegaudiodsp mpegaudioheader"
2645 mpegaudiodsp_select="dct"
2646 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2647 mpegvideoenc_select="aandcttables me_cmp mpegvideo pixblockdsp qpeldsp"
2648 vc1dsp_select="h264chroma qpeldsp startcode"
2649 rdft_select="fft"
2650
2651 # decoders / encoders
2652 aac_decoder_select="adts_header mdct15 mdct sinewin"
2653 aac_fixed_decoder_select="adts_header mdct sinewin"
2654 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2655 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2656 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2657 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2658 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2659 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2660 acelp_kelvin_decoder_select="audiodsp"
2661 adpcm_g722_decoder_select="g722dsp"
2662 adpcm_g722_encoder_select="g722dsp"
2663 aic_decoder_select="golomb idctdsp"
2664 alac_encoder_select="lpc"
2665 als_decoder_select="bswapdsp"
2666 amrnb_decoder_select="lsp"
2667 amrwb_decoder_select="lsp"
2668 amv_decoder_select="sp5x_decoder exif"
2669 amv_encoder_select="jpegtables mpegvideoenc"
2670 ape_decoder_select="bswapdsp llauddsp"
2671 apng_decoder_deps="zlib"
2672 apng_encoder_deps="zlib"
2673 apng_encoder_select="llvidencdsp"
2674 aptx_decoder_select="audio_frame_queue"
2675 aptx_encoder_select="audio_frame_queue"
2676 aptx_hd_decoder_select="audio_frame_queue"
2677 aptx_hd_encoder_select="audio_frame_queue"
2678 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2679 asv1_encoder_select="aandcttables bswapdsp fdctdsp pixblockdsp"
2680 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2681 asv2_encoder_select="aandcttables bswapdsp fdctdsp pixblockdsp"
2682 atrac1_decoder_select="mdct sinewin"
2683 atrac3_decoder_select="mdct"
2684 atrac3al_decoder_select="mdct"
2685 atrac3p_decoder_select="mdct sinewin"
2686 atrac3pal_decoder_select="mdct sinewin"
2687 atrac9_decoder_select="mdct"
2688 av1_decoder_select="cbs_av1"
2689 avrn_decoder_select="exif jpegtables"
2690 bink_decoder_select="blockdsp hpeldsp"
2691 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2692 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2693 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2694 clearvideo_decoder_select="idctdsp"
2695 cllc_decoder_select="bswapdsp"
2696 comfortnoise_encoder_select="lpc"
2697 cook_decoder_select="audiodsp mdct sinewin"
2698 cscd_decoder_select="lzo"
2699 cscd_decoder_suggest="zlib"
2700 dca_decoder_select="mdct"
2701 dca_encoder_select="mdct"
2702 dds_decoder_select="texturedsp"
2703 dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
2704 dnxhd_decoder_select="blockdsp idctdsp"
2705 dnxhd_encoder_select="blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2706 dolby_e_decoder_select="mdct"
2707 dvvideo_decoder_select="dvprofile idctdsp"
2708 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2709 dxa_decoder_deps="zlib"
2710 dxv_decoder_select="lzf texturedsp"
2711 eac3_decoder_select="ac3_decoder"
2712 eac3_encoder_select="ac3_encoder"
2713 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2714 eatgq_decoder_select="aandcttables"
2715 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2716 exr_decoder_deps="zlib"
2717 ffv1_decoder_select="rangecoder"
2718 ffv1_encoder_select="rangecoder"
2719 ffvhuff_decoder_select="huffyuv_decoder"
2720 ffvhuff_encoder_select="huffyuv_encoder"
2721 fic_decoder_select="golomb"
2722 flac_decoder_select="flacdsp"
2723 flac_encoder_select="bswapdsp flacdsp lpc"
2724 flashsv2_decoder_deps="zlib"
2725 flashsv2_encoder_deps="zlib"
2726 flashsv_decoder_deps="zlib"
2727 flashsv_encoder_deps="zlib"
2728 flv_decoder_select="h263_decoder"
2729 flv_encoder_select="h263_encoder"
2730 fourxm_decoder_select="blockdsp bswapdsp"
2731 fraps_decoder_select="bswapdsp huffman"
2732 g2m_decoder_deps="zlib"
2733 g2m_decoder_select="blockdsp idctdsp jpegtables"
2734 g729_decoder_select="audiodsp"
2735 h261_decoder_select="mpegvideo"
2736 h261_encoder_select="mpegvideoenc"
2737 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2738 h263_encoder_select="h263dsp mpegvideoenc"
2739 h263i_decoder_select="h263_decoder"
2740 h263p_decoder_select="h263_decoder"
2741 h263p_encoder_select="h263_encoder"
2742 h264_decoder_select="atsc_a53 cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
2743 h264_decoder_suggest="error_resilience"
2744 hap_decoder_select="snappy texturedsp"
2745 hap_encoder_deps="libsnappy"
2746 hap_encoder_select="texturedspenc"
2747 hevc_decoder_select="atsc_a53 bswapdsp cabac golomb hevcparse videodsp"
2748 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2749 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llvidencdsp"
2750 hymt_decoder_select="huffyuv_decoder"
2751 iac_decoder_select="imc_decoder"
2752 imc_decoder_select="bswapdsp fft mdct sinewin"
2753 imm4_decoder_select="bswapdsp"
2754 imm5_decoder_select="h264_decoder hevc_decoder"
2755 indeo3_decoder_select="hpeldsp"
2756 indeo4_decoder_select="ividsp"
2757 indeo5_decoder_select="ividsp"
2758 interplay_video_decoder_select="hpeldsp"
2759 jpegls_decoder_select="mjpeg_decoder"
2760 jv_decoder_select="blockdsp"
2761 lagarith_decoder_select="llviddsp"
2762 ljpeg_encoder_select="idctdsp jpegtables mpegvideoenc"
2763 lscr_decoder_deps="zlib"
2764 magicyuv_decoder_select="llviddsp"
2765 magicyuv_encoder_select="llvidencdsp"
2766 mdec_decoder_select="blockdsp bswapdsp idctdsp mpegvideo"
2767 metasound_decoder_select="lsp mdct sinewin"
2768 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2769 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2770 mjpeg_encoder_select="jpegtables mpegvideoenc"
2771 mjpegb_decoder_select="mjpeg_decoder"
2772 mlp_decoder_select="mlp_parser"
2773 mlp_encoder_select="lpc audio_frame_queue"
2774 mobiclip_decoder_select="bswapdsp golomb"
2775 motionpixels_decoder_select="bswapdsp"
2776 mp1_decoder_select="mpegaudio"
2777 mp1float_decoder_select="mpegaudio"
2778 mp2_decoder_select="mpegaudio"
2779 mp2float_decoder_select="mpegaudio"
2780 mp3_decoder_select="mpegaudio"
2781 mp3adu_decoder_select="mpegaudio"
2782 mp3adufloat_decoder_select="mpegaudio"
2783 mp3float_decoder_select="mpegaudio"
2784 mp3on4_decoder_select="mpegaudio"
2785 mp3on4float_decoder_select="mpegaudio"
2786 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2787 mpc8_decoder_select="mpegaudiodsp"
2788 mpegvideo_decoder_select="mpegvideo"
2789 mpeg1video_decoder_select="mpegvideo"
2790 mpeg1video_encoder_select="mpegvideoenc h263dsp"
2791 mpeg2video_decoder_select="mpegvideo"
2792 mpeg2video_encoder_select="mpegvideoenc h263dsp"
2793 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2794 mpeg4_encoder_select="h263_encoder"
2795 msa1_decoder_select="mss34dsp"
2796 mscc_decoder_deps="zlib"
2797 msmpeg4v1_decoder_select="h263_decoder"
2798 msmpeg4v2_decoder_select="h263_decoder"
2799 msmpeg4v2_encoder_select="h263_encoder"
2800 msmpeg4v3_decoder_select="h263_decoder"
2801 msmpeg4v3_encoder_select="h263_encoder"
2802 mss2_decoder_select="mpegvideo qpeldsp vc1_decoder"
2803 mts2_decoder_select="mss34dsp"
2804 mv30_decoder_select="aandcttables blockdsp"
2805 mvha_decoder_deps="zlib"
2806 mvha_decoder_select="llviddsp"
2807 mwsc_decoder_deps="zlib"
2808 mxpeg_decoder_select="mjpeg_decoder"
2809 nellymoser_decoder_select="mdct sinewin"
2810 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2811 notchlc_decoder_select="lzf"
2812 nuv_decoder_select="idctdsp lzo"
2813 on2avc_decoder_select="mdct"
2814 opus_decoder_deps="swresample"
2815 opus_decoder_select="mdct15"
2816 opus_encoder_select="audio_frame_queue mdct15"
2817 png_decoder_deps="zlib"
2818 png_encoder_deps="zlib"
2819 png_encoder_select="llvidencdsp"
2820 prores_decoder_select="blockdsp idctdsp"
2821 prores_encoder_select="fdctdsp"
2822 qcelp_decoder_select="lsp"
2823 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2824 ra_144_decoder_select="audiodsp"
2825 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2826 ralf_decoder_select="golomb"
2827 rasc_decoder_deps="zlib"
2828 rawvideo_decoder_select="bswapdsp"
2829 rscc_decoder_deps="zlib"
2830 rtjpeg_decoder_select="me_cmp"
2831 rv10_decoder_select="h263_decoder"
2832 rv10_encoder_select="h263_encoder"
2833 rv20_decoder_select="h263_decoder"
2834 rv20_encoder_select="h263_encoder"
2835 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2836 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2837 screenpresso_decoder_deps="zlib"
2838 shorten_decoder_select="bswapdsp"
2839 sipr_decoder_select="lsp"
2840 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2841 snow_encoder_select="dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2842 sonic_decoder_select="golomb rangecoder"
2843 sonic_encoder_select="golomb rangecoder"
2844 sonic_ls_encoder_select="golomb rangecoder"
2845 sp5x_decoder_select="mjpeg_decoder"
2846 speedhq_decoder_select="mpegvideo"
2847 srgc_decoder_deps="zlib"
2848 svq1_decoder_select="hpeldsp"
2849 svq1_encoder_select="hpeldsp me_cmp mpegvideoenc"
2850 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2851 svq3_decoder_suggest="zlib"
2852 tak_decoder_select="audiodsp"
2853 tdsc_decoder_deps="zlib"
2854 tdsc_decoder_select="mjpeg_decoder"
2855 theora_decoder_select="vp3_decoder"
2856 thp_decoder_select="mjpeg_decoder"
2857 tiff_decoder_select="mjpeg_decoder"
2858 tiff_decoder_suggest="zlib lzma"
2859 tiff_encoder_suggest="zlib"
2860 truehd_decoder_select="mlp_parser"
2861 truehd_encoder_select="lpc audio_frame_queue"
2862 truemotion2_decoder_select="bswapdsp"
2863 truespeech_decoder_select="bswapdsp"
2864 tscc_decoder_deps="zlib"
2865 twinvq_decoder_select="mdct lsp sinewin"
2866 txd_decoder_select="texturedsp"
2867 utvideo_decoder_select="bswapdsp llviddsp"
2868 utvideo_encoder_select="bswapdsp huffman llvidencdsp"
2869 vble_decoder_select="llviddsp"
2870 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 mpegvideo vc1dsp"
2871 vc1image_decoder_select="vc1_decoder"
2872 vorbis_decoder_select="mdct"
2873 vorbis_encoder_select="audio_frame_queue mdct"
2874 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2875 vp4_decoder_select="vp3_decoder"
2876 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2877 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2878 vp6a_decoder_select="vp6_decoder"
2879 vp6f_decoder_select="vp6_decoder"
2880 vp7_decoder_select="h264pred videodsp vp8dsp"
2881 vp8_decoder_select="h264pred videodsp vp8dsp"
2882 vp9_decoder_select="videodsp vp9_parser vp9_superframe_split_bsf"
2883 wcmv_decoder_deps="zlib"
2884 webp_decoder_select="vp8_decoder exif"
2885 wmalossless_decoder_select="llauddsp"
2886 wmapro_decoder_select="mdct sinewin wma_freqs"
2887 wmav1_decoder_select="mdct sinewin wma_freqs"
2888 wmav1_encoder_select="mdct sinewin wma_freqs"
2889 wmav2_decoder_select="mdct sinewin wma_freqs"
2890 wmav2_encoder_select="mdct sinewin wma_freqs"
2891 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2892 wmv1_decoder_select="h263_decoder"
2893 wmv1_encoder_select="h263_encoder"
2894 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2895 wmv2_encoder_select="h263_encoder wmv2dsp"
2896 wmv3_decoder_select="vc1_decoder"
2897 wmv3image_decoder_select="wmv3_decoder"
2898 xma1_decoder_select="wmapro_decoder"
2899 xma2_decoder_select="wmapro_decoder"
2900 ylc_decoder_select="bswapdsp"
2901 zerocodec_decoder_deps="zlib"
2902 zlib_decoder_deps="zlib"
2903 zlib_encoder_deps="zlib"
2904 zmbv_decoder_deps="zlib"
2905 zmbv_encoder_deps="zlib"
2906
2907 # hardware accelerators
2908 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2909 cuda_deps="ffnvcodec"
2910 cuvid_deps="ffnvcodec"
2911 d3d11va_deps="dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2912 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode ole32 user32"
2913 ffnvcodec_deps_any="libdl LoadLibrary"
2914 nvdec_deps="ffnvcodec"
2915 vaapi_x11_deps="xlib"
2916 videotoolbox_hwaccel_deps="videotoolbox pthreads"
2917 videotoolbox_hwaccel_extralibs="-framework QuartzCore"
2918 xvmc_deps="X11_extensions_XvMClib_h"
2919
2920 h263_vaapi_hwaccel_deps="vaapi"
2921 h263_vaapi_hwaccel_select="h263_decoder"
2922 h263_videotoolbox_hwaccel_deps="videotoolbox"
2923 h263_videotoolbox_hwaccel_select="h263_decoder"
2924 h264_d3d11va_hwaccel_deps="d3d11va"
2925 h264_d3d11va_hwaccel_select="h264_decoder"
2926 h264_d3d11va2_hwaccel_deps="d3d11va"
2927 h264_d3d11va2_hwaccel_select="h264_decoder"
2928 h264_dxva2_hwaccel_deps="dxva2"
2929 h264_dxva2_hwaccel_select="h264_decoder"
2930 h264_nvdec_hwaccel_deps="nvdec"
2931 h264_nvdec_hwaccel_select="h264_decoder"
2932 h264_vaapi_hwaccel_deps="vaapi"
2933 h264_vaapi_hwaccel_select="h264_decoder"
2934 h264_vdpau_hwaccel_deps="vdpau"
2935 h264_vdpau_hwaccel_select="h264_decoder"
2936 h264_videotoolbox_hwaccel_deps="videotoolbox"
2937 h264_videotoolbox_hwaccel_select="h264_decoder"
2938 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2939 hevc_d3d11va_hwaccel_select="hevc_decoder"
2940 hevc_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2941 hevc_d3d11va2_hwaccel_select="hevc_decoder"
2942 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2943 hevc_dxva2_hwaccel_select="hevc_decoder"
2944 hevc_nvdec_hwaccel_deps="nvdec"
2945 hevc_nvdec_hwaccel_select="hevc_decoder"
2946 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2947 hevc_vaapi_hwaccel_select="hevc_decoder"
2948 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2949 hevc_vdpau_hwaccel_select="hevc_decoder"
2950 hevc_videotoolbox_hwaccel_deps="videotoolbox"
2951 hevc_videotoolbox_hwaccel_select="hevc_decoder"
2952 mjpeg_nvdec_hwaccel_deps="nvdec"
2953 mjpeg_nvdec_hwaccel_select="mjpeg_decoder"
2954 mjpeg_vaapi_hwaccel_deps="vaapi"
2955 mjpeg_vaapi_hwaccel_select="mjpeg_decoder"
2956 mpeg_xvmc_hwaccel_deps="xvmc"
2957 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2958 mpeg1_nvdec_hwaccel_deps="nvdec"
2959 mpeg1_nvdec_hwaccel_select="mpeg1video_decoder"
2960 mpeg1_vdpau_hwaccel_deps="vdpau"
2961 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2962 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2963 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2964 mpeg1_xvmc_hwaccel_deps="xvmc"
2965 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2966 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2967 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2968 mpeg2_d3d11va2_hwaccel_deps="d3d11va"
2969 mpeg2_d3d11va2_hwaccel_select="mpeg2video_decoder"
2970 mpeg2_dxva2_hwaccel_deps="dxva2"
2971 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2972 mpeg2_nvdec_hwaccel_deps="nvdec"
2973 mpeg2_nvdec_hwaccel_select="mpeg2video_decoder"
2974 mpeg2_vaapi_hwaccel_deps="vaapi"
2975 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2976 mpeg2_vdpau_hwaccel_deps="vdpau"
2977 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2978 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2979 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2980 mpeg2_xvmc_hwaccel_deps="xvmc"
2981 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2982 mpeg4_nvdec_hwaccel_deps="nvdec"
2983 mpeg4_nvdec_hwaccel_select="mpeg4_decoder"
2984 mpeg4_vaapi_hwaccel_deps="vaapi"
2985 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2986 mpeg4_vdpau_hwaccel_deps="vdpau"
2987 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2988 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2989 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2990 vc1_d3d11va_hwaccel_deps="d3d11va"
2991 vc1_d3d11va_hwaccel_select="vc1_decoder"
2992 vc1_d3d11va2_hwaccel_deps="d3d11va"
2993 vc1_d3d11va2_hwaccel_select="vc1_decoder"
2994 vc1_dxva2_hwaccel_deps="dxva2"
2995 vc1_dxva2_hwaccel_select="vc1_decoder"
2996 vc1_nvdec_hwaccel_deps="nvdec"
2997 vc1_nvdec_hwaccel_select="vc1_decoder"
2998 vc1_vaapi_hwaccel_deps="vaapi"
2999 vc1_vaapi_hwaccel_select="vc1_decoder"
3000 vc1_vdpau_hwaccel_deps="vdpau"
3001 vc1_vdpau_hwaccel_select="vc1_decoder"
3002 vp8_nvdec_hwaccel_deps="nvdec"
3003 vp8_nvdec_hwaccel_select="vp8_decoder"
3004 vp8_vaapi_hwaccel_deps="vaapi"
3005 vp8_vaapi_hwaccel_select="vp8_decoder"
3006 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
3007 vp9_d3d11va_hwaccel_select="vp9_decoder"
3008 vp9_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
3009 vp9_d3d11va2_hwaccel_select="vp9_decoder"
3010 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
3011 vp9_dxva2_hwaccel_select="vp9_decoder"
3012 vp9_nvdec_hwaccel_deps="nvdec"
3013 vp9_nvdec_hwaccel_select="vp9_decoder"
3014 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9_bit_depth"
3015 vp9_vaapi_hwaccel_select="vp9_decoder"
3016 vp9_vdpau_hwaccel_deps="vdpau VdpPictureInfoVP9"
3017 vp9_vdpau_hwaccel_select="vp9_decoder"
3018 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
3019 wmv3_d3d11va2_hwaccel_select="vc1_d3d11va2_hwaccel"
3020 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
3021 wmv3_nvdec_hwaccel_select="vc1_nvdec_hwaccel"
3022 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
3023 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
3024
3025 # hardware-accelerated codecs
3026 mediafoundation_deps="mftransform_h MFCreateAlignedMemoryBuffer"
3027 mediafoundation_extralibs="-lmfplat -lmfuuid -lole32 -lstrmiids"
3028 omx_deps="libdl pthreads"
3029 omx_rpi_select="omx"
3030 qsv_deps="libmfx"
3031 qsvdec_select="qsv"
3032 qsvenc_select="qsv"
3033 qsvvpp_select="qsv"
3034 vaapi_encode_deps="vaapi"
3035 v4l2_m2m_deps="linux_videodev2_h sem_timedwait"
3036
3037 hwupload_cuda_filter_deps="ffnvcodec"
3038 scale_npp_filter_deps="ffnvcodec libnpp"
3039 scale_cuda_filter_deps="ffnvcodec"
3040 scale_cuda_filter_deps_any="cuda_nvcc cuda_llvm"
3041 thumbnail_cuda_filter_deps="ffnvcodec"
3042 thumbnail_cuda_filter_deps_any="cuda_nvcc cuda_llvm"
3043 transpose_npp_filter_deps="ffnvcodec libnpp"
3044 overlay_cuda_filter_deps="ffnvcodec"
3045 overlay_cuda_filter_deps_any="cuda_nvcc cuda_llvm"
3046
3047 amf_deps_any="libdl LoadLibrary"
3048 nvenc_deps="ffnvcodec"
3049 nvenc_deps_any="libdl LoadLibrary"
3050 nvenc_encoder_deps="nvenc"
3051
3052 aac_mf_encoder_deps="mediafoundation"
3053 ac3_mf_encoder_deps="mediafoundation"
3054 h263_v4l2m2m_decoder_deps="v4l2_m2m h263_v4l2_m2m"
3055 h263_v4l2m2m_encoder_deps="v4l2_m2m h263_v4l2_m2m"
3056 h264_amf_encoder_deps="amf"
3057 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
3058 h264_cuvid_decoder_deps="cuvid"
3059 h264_cuvid_decoder_select="h264_mp4toannexb_bsf"
3060 h264_mediacodec_decoder_deps="mediacodec"
3061 h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
3062 h264_mf_encoder_deps="mediafoundation"
3063 h264_mmal_decoder_deps="mmal"
3064 h264_nvenc_encoder_deps="nvenc"
3065 h264_nvenc_encoder_select="atsc_a53"
3066 h264_omx_encoder_deps="omx"
3067 h264_qsv_decoder_select="h264_mp4toannexb_bsf qsvdec"
3068 h264_qsv_encoder_select="atsc_a53 qsvenc"
3069 h264_rkmpp_decoder_deps="rkmpp"
3070 h264_rkmpp_decoder_select="h264_mp4toannexb_bsf"
3071 h264_vaapi_encoder_select="cbs_h264 vaapi_encode"
3072 h264_v4l2m2m_decoder_deps="v4l2_m2m h264_v4l2_m2m"
3073 h264_v4l2m2m_decoder_select="h264_mp4toannexb_bsf"
3074 h264_v4l2m2m_encoder_deps="v4l2_m2m h264_v4l2_m2m"
3075 hevc_amf_encoder_deps="amf"
3076 hevc_cuvid_decoder_deps="cuvid"
3077 hevc_cuvid_decoder_select="hevc_mp4toannexb_bsf"
3078 hevc_mediacodec_decoder_deps="mediacodec"
3079 hevc_mediacodec_decoder_select="hevc_mp4toannexb_bsf hevc_parser"
3080 hevc_mf_encoder_deps="mediafoundation"
3081 hevc_nvenc_encoder_deps="nvenc"
3082 hevc_nvenc_encoder_select="atsc_a53"
3083 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf qsvdec"
3084 hevc_qsv_encoder_select="hevcparse qsvenc"
3085 hevc_rkmpp_decoder_deps="rkmpp"
3086 hevc_rkmpp_decoder_select="hevc_mp4toannexb_bsf"
3087 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
3088 hevc_vaapi_encoder_select="cbs_h265 vaapi_encode"
3089 hevc_v4l2m2m_decoder_deps="v4l2_m2m hevc_v4l2_m2m"
3090 hevc_v4l2m2m_decoder_select="hevc_mp4toannexb_bsf"
3091 hevc_v4l2m2m_encoder_deps="v4l2_m2m hevc_v4l2_m2m"
3092 mjpeg_cuvid_decoder_deps="cuvid"
3093 mjpeg_qsv_decoder_select="qsvdec"
3094 mjpeg_qsv_encoder_deps="libmfx"
3095 mjpeg_qsv_encoder_select="qsvenc"
3096 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
3097 mjpeg_vaapi_encoder_select="cbs_jpeg jpegtables vaapi_encode"
3098 mp3_mf_encoder_deps="mediafoundation"
3099 mpeg1_cuvid_decoder_deps="cuvid"
3100 mpeg1_v4l2m2m_decoder_deps="v4l2_m2m mpeg1_v4l2_m2m"
3101 mpeg2_crystalhd_decoder_select="crystalhd"
3102 mpeg2_cuvid_decoder_deps="cuvid"
3103 mpeg2_mmal_decoder_deps="mmal"
3104 mpeg2_mediacodec_decoder_deps="mediacodec"
3105 mpeg2_qsv_decoder_select="qsvdec"
3106 mpeg2_qsv_encoder_select="qsvenc"
3107 mpeg2_vaapi_encoder_select="cbs_mpeg2 vaapi_encode"
3108 mpeg2_v4l2m2m_decoder_deps="v4l2_m2m mpeg2_v4l2_m2m"
3109 mpeg4_crystalhd_decoder_select="crystalhd"
3110 mpeg4_cuvid_decoder_deps="cuvid"
3111 mpeg4_mediacodec_decoder_deps="mediacodec"
3112 mpeg4_mmal_decoder_deps="mmal"
3113 mpeg4_omx_encoder_deps="omx"
3114 mpeg4_v4l2m2m_decoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
3115 mpeg4_v4l2m2m_encoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
3116 msmpeg4_crystalhd_decoder_select="crystalhd"
3117 nvenc_h264_encoder_select="h264_nvenc_encoder"
3118 nvenc_hevc_encoder_select="hevc_nvenc_encoder"
3119 vc1_crystalhd_decoder_select="crystalhd"
3120 vc1_cuvid_decoder_deps="cuvid"
3121 vc1_mmal_decoder_deps="mmal"
3122 vc1_qsv_decoder_select="qsvdec"
3123 vc1_v4l2m2m_decoder_deps="v4l2_m2m vc1_v4l2_m2m"
3124 vp8_cuvid_decoder_deps="cuvid"
3125 vp8_mediacodec_decoder_deps="mediacodec"
3126 vp8_qsv_decoder_select="qsvdec"
3127 vp8_rkmpp_decoder_deps="rkmpp"
3128 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
3129 vp8_vaapi_encoder_select="vaapi_encode"
3130 vp8_v4l2m2m_decoder_deps="v4l2_m2m vp8_v4l2_m2m"
3131 vp8_v4l2m2m_encoder_deps="v4l2_m2m vp8_v4l2_m2m"
3132 vp9_cuvid_decoder_deps="cuvid"
3133 vp9_mediacodec_decoder_deps="mediacodec"
3134 vp9_qsv_decoder_select="qsvdec"
3135 vp9_rkmpp_decoder_deps="rkmpp"
3136 vp9_vaapi_encoder_deps="VAEncPictureParameterBufferVP9"
3137 vp9_vaapi_encoder_select="vaapi_encode"
3138 vp9_qsv_encoder_deps="libmfx MFX_CODEC_VP9"
3139 vp9_qsv_encoder_select="qsvenc"
3140 vp9_v4l2m2m_decoder_deps="v4l2_m2m vp9_v4l2_m2m"
3141 wmv3_crystalhd_decoder_select="crystalhd"
3142
3143 # parsers
3144 aac_parser_select="adts_header"
3145 av1_parser_select="cbs_av1"
3146 h264_parser_select="golomb h264dsp h264parse"
3147 hevc_parser_select="hevcparse"
3148 mpegaudio_parser_select="mpegaudioheader"
3149 mpegvideo_parser_select="mpegvideo"
3150 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
3151 vc1_parser_select="vc1dsp"
3152
3153 # bitstream_filters
3154 aac_adtstoasc_bsf_select="adts_header"
3155 av1_frame_merge_bsf_select="cbs_av1"
3156 av1_frame_split_bsf_select="cbs_av1"
3157 av1_metadata_bsf_select="cbs_av1"
3158 eac3_core_bsf_select="ac3_parser"
3159 filter_units_bsf_select="cbs"
3160 h264_metadata_bsf_deps="const_nan"
3161 h264_metadata_bsf_select="cbs_h264"
3162 h264_redundant_pps_bsf_select="cbs_h264"
3163 hevc_metadata_bsf_select="cbs_h265"
3164 mjpeg2jpeg_bsf_select="jpegtables"
3165 mpeg2_metadata_bsf_select="cbs_mpeg2"
3166 trace_headers_bsf_select="cbs"
3167 vp9_metadata_bsf_select="cbs_vp9"
3168
3169 # external libraries
3170 aac_at_decoder_deps="audiotoolbox"
3171 aac_at_decoder_select="aac_adtstoasc_bsf"
3172 ac3_at_decoder_deps="audiotoolbox"
3173 ac3_at_decoder_select="ac3_parser"
3174 adpcm_ima_qt_at_decoder_deps="audiotoolbox"
3175 alac_at_decoder_deps="audiotoolbox"
3176 amr_nb_at_decoder_deps="audiotoolbox"
3177 avisynth_deps_any="libdl LoadLibrary"
3178 avisynth_demuxer_deps="avisynth"
3179 avisynth_demuxer_select="riffdec"
3180 eac3_at_decoder_deps="audiotoolbox"
3181 eac3_at_decoder_select="ac3_parser"
3182 gsm_ms_at_decoder_deps="audiotoolbox"
3183 ilbc_at_decoder_deps="audiotoolbox"
3184 mp1_at_decoder_deps="audiotoolbox"
3185 mp2_at_decoder_deps="audiotoolbox"
3186 mp3_at_decoder_deps="audiotoolbox"
3187 mp1_at_decoder_select="mpegaudioheader"
3188 mp2_at_decoder_select="mpegaudioheader"
3189 mp3_at_decoder_select="mpegaudioheader"
3190 pcm_alaw_at_decoder_deps="audiotoolbox"
3191 pcm_mulaw_at_decoder_deps="audiotoolbox"
3192 qdmc_decoder_select="fft"
3193 qdmc_at_decoder_deps="audiotoolbox"
3194 qdm2_at_decoder_deps="audiotoolbox"
3195 aac_at_encoder_deps="audiotoolbox"
3196 aac_at_encoder_select="audio_frame_queue"
3197 alac_at_encoder_deps="audiotoolbox"
3198 alac_at_encoder_select="audio_frame_queue"
3199 ilbc_at_encoder_deps="audiotoolbox"
3200 ilbc_at_encoder_select="audio_frame_queue"
3201 pcm_alaw_at_encoder_deps="audiotoolbox"
3202 pcm_alaw_at_encoder_select="audio_frame_queue"
3203 pcm_mulaw_at_encoder_deps="audiotoolbox"
3204 pcm_mulaw_at_encoder_select="audio_frame_queue"
3205 chromaprint_muxer_deps="chromaprint"
3206 h264_videotoolbox_encoder_deps="pthreads"
3207 h264_videotoolbox_encoder_select="atsc_a53 videotoolbox_encoder"
3208 hevc_videotoolbox_encoder_deps="pthreads"
3209 hevc_videotoolbox_encoder_select="atsc_a53 videotoolbox_encoder"
3210 libaom_av1_decoder_deps="libaom"
3211 libaom_av1_encoder_deps="libaom"
3212 libaom_av1_encoder_select="extract_extradata_bsf"
3213 libaribb24_decoder_deps="libaribb24"
3214 libcelt_decoder_deps="libcelt"
3215 libcodec2_decoder_deps="libcodec2"
3216 libcodec2_encoder_deps="libcodec2"
3217 libdav1d_decoder_deps="libdav1d"
3218 libdav1d_decoder_select="atsc_a53"
3219 libdavs2_decoder_deps="libdavs2"
3220 libfdk_aac_decoder_deps="libfdk_aac"
3221 libfdk_aac_encoder_deps="libfdk_aac"
3222 libfdk_aac_encoder_select="audio_frame_queue"
3223 libgme_demuxer_deps="libgme"
3224 libgsm_decoder_deps="libgsm"
3225 libgsm_encoder_deps="libgsm"
3226 libgsm_ms_decoder_deps="libgsm"
3227 libgsm_ms_encoder_deps="libgsm"
3228 libilbc_decoder_deps="libilbc"
3229 libilbc_encoder_deps="libilbc"
3230 libkvazaar_encoder_deps="libkvazaar"
3231 libmodplug_demuxer_deps="libmodplug"
3232 libmp3lame_encoder_deps="libmp3lame"
3233 libmp3lame_encoder_select="audio_frame_queue mpegaudioheader"
3234 libopencore_amrnb_decoder_deps="libopencore_amrnb"
3235 libopencore_amrnb_encoder_deps="libopencore_amrnb"
3236 libopencore_amrnb_encoder_select="audio_frame_queue"
3237 libopencore_amrwb_decoder_deps="libopencore_amrwb"
3238 libopenh264_decoder_deps="libopenh264"
3239 libopenh264_decoder_select="h264_mp4toannexb_bsf"
3240 libopenh264_encoder_deps="libopenh264"
3241 libopenjpeg_decoder_deps="libopenjpeg"
3242 libopenjpeg_encoder_deps="libopenjpeg"
3243 libopenmpt_demuxer_deps="libopenmpt"
3244 libopus_decoder_deps="libopus"
3245 libopus_encoder_deps="libopus"
3246 libopus_encoder_select="audio_frame_queue"
3247 librav1e_encoder_deps="librav1e"
3248 librav1e_encoder_select="extract_extradata_bsf"
3249 librsvg_decoder_deps="librsvg"
3250 libshine_encoder_deps="libshine"
3251 libshine_encoder_select="audio_frame_queue"
3252 libspeex_decoder_deps="libspeex"
3253 libspeex_encoder_deps="libspeex"
3254 libspeex_encoder_select="audio_frame_queue"
3255 libsvtav1_encoder_deps="libsvtav1"
3256 libtheora_encoder_deps="libtheora"
3257 libtwolame_encoder_deps="libtwolame"
3258 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
3259 libvorbis_decoder_deps="libvorbis"
3260 libvorbis_encoder_deps="libvorbis libvorbisenc"
3261 libvorbis_encoder_select="audio_frame_queue"
3262 libvpx_vp8_decoder_deps="libvpx"
3263 libvpx_vp8_encoder_deps="libvpx"
3264 libvpx_vp9_decoder_deps="libvpx"
3265 libvpx_vp9_encoder_deps="libvpx"
3266 libwavpack_encoder_deps="libwavpack"
3267 libwavpack_encoder_select="audio_frame_queue"
3268 libwebp_encoder_deps="libwebp"
3269 libwebp_anim_encoder_deps="libwebp"
3270 libx262_encoder_deps="libx262"
3271 libx264_encoder_deps="libx264"
3272 libx264_encoder_select="atsc_a53"
3273 libx264rgb_encoder_deps="libx264 x264_csp_bgr"
3274 libx264rgb_encoder_select="libx264_encoder"
3275 libx265_encoder_deps="libx265"
3276 libxavs_encoder_deps="libxavs"
3277 libxavs2_encoder_deps="libxavs2"
3278 libxvid_encoder_deps="libxvid"
3279 libzvbi_teletext_decoder_deps="libzvbi"
3280 vapoursynth_demuxer_deps="vapoursynth"
3281 videotoolbox_suggest="coreservices"
3282 videotoolbox_deps="corefoundation coremedia corevideo"
3283 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
3284
3285 # demuxers / muxers
3286 ac3_demuxer_select="ac3_parser"
3287 act_demuxer_select="riffdec"
3288 aiff_muxer_select="iso_media"
3289 asf_demuxer_select="riffdec"
3290 asf_o_demuxer_select="riffdec"
3291 asf_muxer_select="riffenc"
3292 asf_stream_muxer_select="asf_muxer"
3293 av1_demuxer_select="av1_frame_merge_bsf av1_parser"
3294 avi_demuxer_select="iso_media riffdec exif"
3295 avi_muxer_select="riffenc"
3296 caf_demuxer_select="iso_media riffdec"
3297 caf_muxer_select="iso_media"
3298 dash_muxer_select="mp4_muxer"
3299 dash_demuxer_deps="libxml2"
3300 dirac_demuxer_select="dirac_parser"
3301 dts_demuxer_select="dca_parser"
3302 dtshd_demuxer_select="dca_parser"
3303 dv_demuxer_select="dvprofile"
3304 dv_muxer_select="dvprofile"
3305 dxa_demuxer_select="riffdec"
3306 eac3_demuxer_select="ac3_parser"
3307 f4v_muxer_select="mov_muxer"
3308 fifo_muxer_deps="threads"
3309 flac_demuxer_select="flac_parser"
3310 flv_muxer_select="aac_adtstoasc_bsf"
3311 gxf_muxer_select="pcm_rechunk_bsf"
3312 hds_muxer_select="flv_muxer"
3313 hls_muxer_select="mpegts_muxer"
3314 hls_muxer_suggest="gcrypt openssl"
3315 image2_alias_pix_demuxer_select="image2_demuxer"
3316 image2_brender_pix_demuxer_select="image2_demuxer"
3317 ipod_muxer_select="mov_muxer"
3318 ismv_muxer_select="mov_muxer"
3319 ivf_muxer_select="av1_metadata_bsf vp9_superframe_bsf"
3320 latm_muxer_select="aac_adtstoasc_bsf"
3321 matroska_audio_muxer_select="matroska_muxer"
3322 matroska_demuxer_select="iso_media riffdec"
3323 matroska_demuxer_suggest="bzlib lzo zlib"
3324 matroska_muxer_select="iso_media riffenc vp9_superframe_bsf aac_adtstoasc_bsf"
3325 mlp_demuxer_select="mlp_parser"
3326 mmf_muxer_select="riffenc"
3327 mov_demuxer_select="iso_media riffdec"
3328 mov_demuxer_suggest="zlib"
3329 mov_muxer_select="iso_media riffenc rtpenc_chain vp9_superframe_bsf aac_adtstoasc_bsf"
3330 mp3_demuxer_select="mpegaudio_parser"
3331 mp3_muxer_select="mpegaudioheader"
3332 mp4_muxer_select="mov_muxer"
3333 mpegts_demuxer_select="iso_media"
3334 mpegts_muxer_select="ac3_parser adts_muxer latm_muxer h264_mp4toannexb_bsf hevc_mp4toannexb_bsf"
3335 mpegtsraw_demuxer_select="mpegts_demuxer"
3336 mxf_muxer_select="golomb pcm_rechunk_bsf"
3337 mxf_d10_muxer_select="mxf_muxer"
3338 mxf_opatom_muxer_select="mxf_muxer"
3339 nut_muxer_select="riffenc"
3340 nuv_demuxer_select="riffdec"
3341 obu_demuxer_select="av1_frame_merge_bsf av1_parser"
3342 oga_muxer_select="ogg_muxer"
3343 ogg_demuxer_select="dirac_parse"
3344 ogv_muxer_select="ogg_muxer"
3345 opus_muxer_select="ogg_muxer"
3346 psp_muxer_select="mov_muxer"
3347 rtp_demuxer_select="sdp_demuxer"
3348 rtp_muxer_select="golomb jpegtables"
3349 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
3350 rtsp_demuxer_select="http_protocol rtpdec"
3351 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
3352 sap_demuxer_select="sdp_demuxer"
3353 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
3354 sdp_demuxer_select="rtpdec"
3355 smoothstreaming_muxer_select="ismv_muxer"
3356 spdif_demuxer_select="adts_header"
3357 spdif_muxer_select="adts_header"
3358 spx_muxer_select="ogg_muxer"
3359 swf_demuxer_suggest="zlib"
3360 tak_demuxer_select="tak_parser"
3361 truehd_demuxer_select="mlp_parser"
3362 tg2_muxer_select="mov_muxer"
3363 tgp_muxer_select="mov_muxer"
3364 vobsub_demuxer_select="mpegps_demuxer"
3365 w64_demuxer_select="wav_demuxer"
3366 w64_muxer_select="wav_muxer"
3367 wav_demuxer_select="riffdec"
3368 wav_muxer_select="riffenc"
3369 webm_chunk_muxer_select="webm_muxer"
3370 webm_muxer_select="iso_media riffenc"
3371 webm_dash_manifest_demuxer_select="matroska_demuxer"
3372 wtv_demuxer_select="mpegts_demuxer riffdec"
3373 wtv_muxer_select="mpegts_muxer riffenc"
3374 xmv_demuxer_select="riffdec"
3375 xwma_demuxer_select="riffdec"
3376
3377 # indevs / outdevs
3378 android_camera_indev_deps="android camera2ndk mediandk pthreads"
3379 android_camera_indev_extralibs="-landroid -lcamera2ndk -lmediandk"
3380 alsa_indev_deps="alsa"
3381 alsa_outdev_deps="alsa"
3382 avfoundation_indev_deps="avfoundation corevideo coremedia pthreads"
3383 avfoundation_indev_suggest="coregraphics applicationservices"
3384 avfoundation_indev_extralibs="-framework Foundation"
3385 audiotoolbox_outdev_deps="audiotoolbox pthreads"
3386 audiotoolbox_outdev_extralibs="-framework AudioToolbox -framework CoreAudio"
3387 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
3388 caca_outdev_deps="libcaca"
3389 decklink_deps_any="libdl LoadLibrary"
3390 decklink_indev_deps="decklink threads"
3391 decklink_indev_extralibs="-lstdc++"
3392 decklink_outdev_deps="decklink threads"
3393 decklink_outdev_suggest="libklvanc"
3394 decklink_outdev_extralibs="-lstdc++"
3395 dshow_indev_deps="IBaseFilter"
3396 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
3397 fbdev_indev_deps="linux_fb_h"
3398 fbdev_outdev_deps="linux_fb_h"
3399 gdigrab_indev_deps="CreateDIBSection"
3400 gdigrab_indev_extralibs="-lgdi32"
3401 gdigrab_indev_select="bmp_decoder"
3402 iec61883_indev_deps="libiec61883"
3403 jack_indev_deps="libjack"
3404 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
3405 kmsgrab_indev_deps="libdrm"
3406 lavfi_indev_deps="avfilter"
3407 libcdio_indev_deps="libcdio"
3408 libdc1394_indev_deps="libdc1394"
3409 openal_indev_deps="openal"
3410 opengl_outdev_deps="opengl"
3411 opengl_outdev_suggest="sdl2"
3412 oss_indev_deps_any="sys_soundcard_h"
3413 oss_outdev_deps_any="sys_soundcard_h"
3414 pulse_indev_deps="libpulse"
3415 pulse_outdev_deps="libpulse"
3416 sdl2_outdev_deps="sdl2"
3417 sndio_indev_deps="sndio"
3418 sndio_outdev_deps="sndio"
3419 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
3420 v4l2_indev_suggest="libv4l2"
3421 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
3422 v4l2_outdev_suggest="libv4l2"
3423 vfwcap_indev_deps="vfw32 vfwcap_defines"
3424 xcbgrab_indev_deps="libxcb"
3425 xcbgrab_indev_suggest="libxcb_shm libxcb_shape libxcb_xfixes"
3426 xv_outdev_deps="xlib"
3427
3428 # protocols
3429 async_protocol_deps="threads"
3430 bluray_protocol_deps="libbluray"
3431 ffrtmpcrypt_protocol_conflict="librtmp_protocol"
3432 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl mbedtls"
3433 ffrtmpcrypt_protocol_select="tcp_protocol"
3434 ffrtmphttp_protocol_conflict="librtmp_protocol"
3435 ffrtmphttp_protocol_select="http_protocol"
3436 ftp_protocol_select="tcp_protocol"
3437 gopher_protocol_select="network"
3438 http_protocol_select="tcp_protocol"
3439 http_protocol_suggest="zlib"
3440 httpproxy_protocol_select="tcp_protocol"
3441 httpproxy_protocol_suggest="zlib"
3442 https_protocol_select="tls_protocol"
3443 https_protocol_suggest="zlib"
3444 icecast_protocol_select="http_protocol"
3445 mmsh_protocol_select="http_protocol"
3446 mmst_protocol_select="network"
3447 rtmp_protocol_conflict="librtmp_protocol"
3448 rtmp_protocol_select="tcp_protocol"
3449 rtmp_protocol_suggest="zlib"
3450 rtmpe_protocol_select="ffrtmpcrypt_protocol"
3451 rtmpe_protocol_suggest="zlib"
3452 rtmps_protocol_conflict="librtmp_protocol"
3453 rtmps_protocol_select="tls_protocol"
3454 rtmps_protocol_suggest="zlib"
3455 rtmpt_protocol_select="ffrtmphttp_protocol"
3456 rtmpt_protocol_suggest="zlib"
3457 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
3458 rtmpte_protocol_suggest="zlib"
3459 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
3460 rtmpts_protocol_suggest="zlib"
3461 rtp_protocol_select="udp_protocol"
3462 schannel_conflict="openssl gnutls libtls mbedtls"
3463 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
3464 sctp_protocol_select="network"
3465 securetransport_conflict="openssl gnutls libtls mbedtls"
3466 srtp_protocol_select="rtp_protocol srtp"
3467 tcp_protocol_select="network"
3468 tls_protocol_deps_any="gnutls openssl schannel securetransport libtls mbedtls"
3469 tls_protocol_select="tcp_protocol"
3470 udp_protocol_select="network"
3471 udplite_protocol_select="network"
3472 unix_protocol_deps="sys_un_h"
3473 unix_protocol_select="network"
3474
3475 # external library protocols
3476 libamqp_protocol_deps="librabbitmq"
3477 libamqp_protocol_select="network"
3478 librtmp_protocol_deps="librtmp"
3479 librtmpe_protocol_deps="librtmp"
3480 librtmps_protocol_deps="librtmp"
3481 librtmpt_protocol_deps="librtmp"
3482 librtmpte_protocol_deps="librtmp"
3483 libsmbclient_protocol_deps="libsmbclient gplv3"
3484 libsrt_protocol_deps="libsrt"
3485 libsrt_protocol_select="network"
3486 libssh_protocol_deps="libssh"
3487 libtls_conflict="openssl gnutls mbedtls"
3488 libzmq_protocol_deps="libzmq"
3489 libzmq_protocol_select="network"
3490
3491 # filters
3492 afftdn_filter_deps="avcodec"
3493 afftdn_filter_select="fft"
3494 afftfilt_filter_deps="avcodec"
3495 afftfilt_filter_select="fft"
3496 afir_filter_deps="avcodec"
3497 afir_filter_select="rdft"
3498 amovie_filter_deps="avcodec avformat"
3499 aresample_filter_deps="swresample"
3500 asr_filter_deps="pocketsphinx"
3501 ass_filter_deps="libass"
3502 atempo_filter_deps="avcodec"
3503 atempo_filter_select="rdft"
3504 avgblur_opencl_filter_deps="opencl"
3505 avgblur_vulkan_filter_deps="vulkan libglslang"
3506 azmq_filter_deps="libzmq"
3507 blackframe_filter_deps="gpl"
3508 bm3d_filter_deps="avcodec"
3509 bm3d_filter_select="dct"
3510 boxblur_filter_deps="gpl"
3511 boxblur_opencl_filter_deps="opencl gpl"
3512 bs2b_filter_deps="libbs2b"
3513 chromaber_vulkan_filter_deps="vulkan libglslang"
3514 colorkey_opencl_filter_deps="opencl"
3515 colormatrix_filter_deps="gpl"
3516 convolution_opencl_filter_deps="opencl"
3517 convolve_filter_deps="avcodec"
3518 convolve_filter_select="fft"
3519 coreimage_filter_deps="coreimage appkit"
3520 coreimage_filter_extralibs="-framework OpenGL"
3521 coreimagesrc_filter_deps="coreimage appkit"
3522 coreimagesrc_filter_extralibs="-framework OpenGL"
3523 cover_rect_filter_deps="avcodec avformat gpl"
3524 cropdetect_filter_deps="gpl"
3525 deconvolve_filter_deps="avcodec"
3526 deconvolve_filter_select="fft"
3527 deinterlace_qsv_filter_deps="libmfx"
3528 deinterlace_vaapi_filter_deps="vaapi"
3529 delogo_filter_deps="gpl"
3530 denoise_vaapi_filter_deps="vaapi"
3531 derain_filter_select="dnn"
3532 deshake_filter_select="pixelutils"
3533 deshake_opencl_filter_deps="opencl"
3534 dilation_opencl_filter_deps="opencl"
3535 dnn_processing_filter_deps="swscale"
3536 dnn_processing_filter_select="dnn"
3537 drawtext_filter_deps="libfreetype"
3538 drawtext_filter_suggest="libfontconfig libfribidi"
3539 elbg_filter_deps="avcodec"
3540 eq_filter_deps="gpl"
3541 erosion_opencl_filter_deps="opencl"
3542 fftfilt_filter_deps="avcodec"
3543 fftfilt_filter_select="rdft"
3544 fftdnoiz_filter_deps="avcodec"
3545 fftdnoiz_filter_select="fft"
3546 find_rect_filter_deps="avcodec avformat gpl"
3547 firequalizer_filter_deps="avcodec"
3548 firequalizer_filter_select="rdft"
3549 flite_filter_deps="libflite"
3550 framerate_filter_select="scene_sad"
3551 freezedetect_filter_select="scene_sad"
3552 frei0r_filter_deps="frei0r libdl"
3553 frei0r_src_filter_deps="frei0r libdl"
3554 fspp_filter_deps="gpl"
3555 headphone_filter_select="fft"
3556 histeq_filter_deps="gpl"
3557 hqdn3d_filter_deps="gpl"
3558 interlace_filter_deps="gpl"
3559 kerndeint_filter_deps="gpl"
3560 ladspa_filter_deps="ladspa libdl"
3561 lensfun_filter_deps="liblensfun version3"
3562 lv2_filter_deps="lv2"
3563 mcdeint_filter_deps="avcodec gpl"
3564 movie_filter_deps="avcodec avformat"
3565 mpdecimate_filter_deps="gpl"
3566 mpdecimate_filter_select="pixelutils"
3567 minterpolate_filter_select="scene_sad"
3568 mptestsrc_filter_deps="gpl"
3569 negate_filter_deps="lut_filter"
3570 nlmeans_opencl_filter_deps="opencl"
3571 nnedi_filter_deps="gpl"
3572 ocr_filter_deps="libtesseract"
3573 ocv_filter_deps="libopencv"
3574 openclsrc_filter_deps="opencl"
3575 overlay_opencl_filter_deps="opencl"
3576 overlay_qsv_filter_deps="libmfx"
3577 overlay_qsv_filter_select="qsvvpp"
3578 overlay_vulkan_filter_deps="vulkan libglslang"
3579 owdenoise_filter_deps="gpl"
3580 pad_opencl_filter_deps="opencl"
3581 pan_filter_deps="swresample"
3582 perspective_filter_deps="gpl"
3583 phase_filter_deps="gpl"
3584 pp7_filter_deps="gpl"
3585 pp_filter_deps="gpl postproc"
3586 prewitt_opencl_filter_deps="opencl"
3587 procamp_vaapi_filter_deps="vaapi"
3588 program_opencl_filter_deps="opencl"
3589 pullup_filter_deps="gpl"
3590 removelogo_filter_deps="avcodec avformat swscale"
3591 repeatfields_filter_deps="gpl"
3592 resample_filter_deps="avresample"
3593 roberts_opencl_filter_deps="opencl"
3594 rubberband_filter_deps="librubberband"
3595 sab_filter_deps="gpl swscale"
3596 scale2ref_filter_deps="swscale"
3597 scale_filter_deps="swscale"
3598 scale_qsv_filter_deps="libmfx"
3599 scdet_filter_select="scene_sad"
3600 select_filter_select="scene_sad"
3601 sharpness_vaapi_filter_deps="vaapi"
3602 showcqt_filter_deps="avcodec avformat swscale"
3603 showcqt_filter_suggest="libfontconfig libfreetype"
3604 showcqt_filter_select="fft"
3605 showfreqs_filter_deps="avcodec"
3606 showfreqs_filter_select="fft"
3607 showspatial_filter_select="fft"
3608 showspectrum_filter_deps="avcodec"
3609 showspectrum_filter_select="fft"
3610 showspectrumpic_filter_deps="avcodec"
3611 showspectrumpic_filter_select="fft"
3612 signature_filter_deps="gpl avcodec avformat"
3613 sinc_filter_select="rdft"
3614 smartblur_filter_deps="gpl swscale"
3615 sobel_opencl_filter_deps="opencl"
3616 sofalizer_filter_deps="libmysofa avcodec"
3617 sofalizer_filter_select="fft"
3618 spectrumsynth_filter_deps="avcodec"
3619 spectrumsynth_filter_select="fft"
3620 spp_filter_deps="gpl avcodec"
3621 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3622 sr_filter_deps="avformat swscale"
3623 sr_filter_select="dnn"
3624 stereo3d_filter_deps="gpl"
3625 subtitles_filter_deps="avformat avcodec libass"
3626 super2xsai_filter_deps="gpl"
3627 pixfmts_super2xsai_test_deps="super2xsai_filter"
3628 superequalizer_filter_select="rdft"
3629 surround_filter_select="rdft"
3630 tinterlace_filter_deps="gpl"
3631 tinterlace_merge_test_deps="tinterlace_filter"
3632 tinterlace_pad_test_deps="tinterlace_filter"
3633 tonemap_filter_deps="const_nan"
3634 tonemap_vaapi_filter_deps="vaapi VAProcFilterParameterBufferHDRToneMapping"
3635 tonemap_opencl_filter_deps="opencl const_nan"
3636 transpose_opencl_filter_deps="opencl"
3637 transpose_vaapi_filter_deps="vaapi VAProcPipelineCaps_rotation_flags"
3638 unsharp_opencl_filter_deps="opencl"
3639 uspp_filter_deps="gpl avcodec"
3640 vaguedenoiser_filter_deps="gpl"
3641 vidstabdetect_filter_deps="libvidstab"
3642 vidstabtransform_filter_deps="libvidstab"
3643 libvmaf_filter_deps="libvmaf pthreads"
3644 zmq_filter_deps="libzmq"
3645 zoompan_filter_deps="swscale"
3646 zscale_filter_deps="libzimg const_nan"
3647 scale_vaapi_filter_deps="vaapi"
3648 scale_vulkan_filter_deps="vulkan libglslang"
3649 vpp_qsv_filter_deps="libmfx"
3650 vpp_qsv_filter_select="qsvvpp"
3651 xfade_opencl_filter_deps="opencl"
3652 yadif_cuda_filter_deps="ffnvcodec"
3653 yadif_cuda_filter_deps_any="cuda_nvcc cuda_llvm"
3654
3655 # examples
3656 avio_list_dir_deps="avformat avutil"
3657 avio_reading_deps="avformat avcodec avutil"
3658 decode_audio_example_deps="avcodec avutil"
3659 decode_video_example_deps="avcodec avutil"
3660 demuxing_decoding_example_deps="avcodec avformat avutil"
3661 encode_audio_example_deps="avcodec avutil"
3662 encode_video_example_deps="avcodec avutil"
3663 extract_mvs_example_deps="avcodec avformat avutil"
3664 filter_audio_example_deps="avfilter avutil"
3665 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3666 filtering_video_example_deps="avfilter avcodec avformat avutil"
3667 http_multiclient_example_deps="avformat avutil fork"
3668 hw_decode_example_deps="avcodec avformat avutil"
3669 metadata_example_deps="avformat avutil"
3670 muxing_example_deps="avcodec avformat avutil swscale"
3671 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
3672 remuxing_example_deps="avcodec avformat avutil"
3673 resampling_audio_example_deps="avutil swresample"
3674 scaling_video_example_deps="avutil swscale"
3675 transcode_aac_example_deps="avcodec avformat swresample"
3676 transcoding_example_deps="avfilter avcodec avformat avutil"
3677 vaapi_encode_example_deps="avcodec avutil h264_vaapi_encoder"
3678 vaapi_transcode_example_deps="avcodec avformat avutil h264_vaapi_encoder"
3679
3680 # EXTRALIBS_LIST
3681 cpu_init_extralibs="pthreads_extralibs"
3682 cws2fws_extralibs="zlib_extralibs"
3683
3684 # libraries, in any order
3685 avcodec_deps="avutil"
3686 avcodec_suggest="libm"
3687 avcodec_select="null_bsf"
3688 avdevice_deps="avformat avcodec avutil"
3689 avdevice_suggest="libm"
3690 avfilter_deps="avutil"
3691 avfilter_suggest="libm"
3692 avformat_deps="avcodec avutil"
3693 avformat_suggest="libm network zlib"
3694 avresample_deps="avutil"
3695 avresample_suggest="libm"
3696 avutil_suggest="clock_gettime ffnvcodec libm libdrm libmfx opencl user32 vaapi vulkan videotoolbox corefoundation corevideo coremedia bcrypt"
3697 postproc_deps="avutil gpl"
3698 postproc_suggest="libm"
3699 swresample_deps="avutil"
3700 swresample_suggest="libm libsoxr"
3701 swscale_deps="avutil"
3702 swscale_suggest="libm"
3703
3704 avcodec_extralibs="pthreads_extralibs iconv_extralibs dxva2_extralibs"
3705 avfilter_extralibs="pthreads_extralibs"
3706 avutil_extralibs="d3d11va_extralibs nanosleep_extralibs pthreads_extralibs vaapi_drm_extralibs vaapi_x11_extralibs vdpau_x11_extralibs"
3707
3708 # programs
3709 ffmpeg_deps="avcodec avfilter avformat"
3710 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3711                hflip_filter null_filter
3712                transpose_filter trim_filter vflip_filter"
3713 ffmpeg_suggest="ole32 psapi shell32"
3714 ffplay_deps="avcodec avformat swscale swresample sdl2"
3715 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3716 ffplay_suggest="shell32"
3717 ffprobe_deps="avcodec avformat"
3718 ffprobe_suggest="shell32"
3719
3720 # documentation
3721 podpages_deps="perl"
3722 manpages_deps="perl pod2man"
3723 htmlpages_deps="perl"
3724 htmlpages_deps_any="makeinfo_html texi2html"
3725 txtpages_deps="perl makeinfo"
3726 doc_deps_any="manpages htmlpages podpages txtpages"
3727
3728 # default parameters
3729
3730 logfile="ffbuild/config.log"
3731
3732 # installation paths
3733 prefix_default="/usr/local"
3734 bindir_default='${prefix}/bin'
3735 datadir_default='${prefix}/share/ffmpeg'
3736 docdir_default='${prefix}/share/doc/ffmpeg'
3737 incdir_default='${prefix}/include'
3738 libdir_default='${prefix}/lib'
3739 mandir_default='${prefix}/share/man'
3740
3741 # toolchain
3742 ar_default="ar"
3743 cc_default="gcc"
3744 cxx_default="g++"
3745 host_cc_default="gcc"
3746 doxygen_default="doxygen"
3747 install="install"
3748 ln_s_default="ln -s -f"
3749 nm_default="nm -g"
3750 pkg_config_default=pkg-config
3751 ranlib_default="ranlib"
3752 strip_default="strip"
3753 version_script='--version-script'
3754 objformat="elf32"
3755 x86asmexe_default="nasm"
3756 windres_default="windres"
3757 striptype="direct"
3758
3759 # OS
3760 target_os_default=$(tolower $(uname -s))
3761 host_os=$target_os_default
3762
3763 # machine
3764 if test "$target_os_default" = aix; then
3765     arch_default=$(uname -p)
3766     strip_default="strip -X32_64"
3767     nm_default="nm -g -X32_64"
3768 else
3769     arch_default=$(uname -m)
3770 fi
3771 cpu="generic"
3772 intrinsics="none"
3773
3774 # configurable options
3775 enable $PROGRAM_LIST
3776 enable $DOCUMENT_LIST
3777 enable $EXAMPLE_LIST
3778 enable $(filter_out avresample $LIBRARY_LIST)
3779 enable stripping
3780
3781 enable asm
3782 enable debug
3783 enable doc
3784 enable faan faandct faanidct
3785 enable large_tests
3786 enable optimizations
3787 enable runtime_cpudetect
3788 enable safe_bitstream_reader
3789 enable static
3790 enable swscale_alpha
3791 enable valgrind_backtrace
3792
3793 sws_max_filter_size_default=256
3794 set_default sws_max_filter_size
3795
3796 # internal components are enabled by default
3797 enable $EXTRALIBS_LIST
3798
3799 # Avoid external, non-system, libraries getting enabled by dependency resolution
3800 disable $EXTERNAL_LIBRARY_LIST $HWACCEL_LIBRARY_LIST
3801
3802 # build settings
3803 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3804 LIBPREF="lib"
3805 LIBSUF=".a"
3806 FULLNAME='$(NAME)$(BUILDSUF)'
3807 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3808 SLIBPREF="lib"
3809 SLIBSUF=".so"
3810 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3811 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3812 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3813 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3814 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3815 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3816 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
3817
3818 asflags_filter=echo
3819 cflags_filter=echo
3820 ldflags_filter=echo
3821
3822 AS_C='-c'
3823 AS_O='-o $@'
3824 CC_C='-c'
3825 CC_E='-E -o $@'
3826 CC_O='-o $@'
3827 CXX_C='-c'
3828 CXX_O='-o $@'
3829 OBJCC_C='-c'
3830 OBJCC_E='-E -o $@'
3831 OBJCC_O='-o $@'
3832 X86ASM_O='-o $@'
3833 LD_O='-o $@'
3834 LD_LIB='-l%'
3835 LD_PATH='-L'
3836 HOSTCC_C='-c'
3837 HOSTCC_E='-E -o $@'
3838 HOSTCC_O='-o $@'
3839 HOSTLD_O='-o $@'
3840 NVCC_C='-c'
3841 NVCC_O='-o $@'
3842
3843 host_extralibs='-lm'
3844 host_cflags_filter=echo
3845 host_ldflags_filter=echo
3846
3847 target_path='$(CURDIR)'
3848
3849 # since the object filename is not given with the -MM flag, the compiler
3850 # is only able to print the basename, and we must add the path ourselves
3851 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3852 DEPFLAGS='-MM'
3853
3854 mkdir -p ffbuild
3855
3856 # find source path
3857 if test -f configure; then
3858     source_path=.
3859 elif test -f src/configure; then
3860     source_path=src
3861 else
3862     source_path=$(cd $(dirname "$0"); pwd)
3863     case "$source_path" in
3864         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3865     esac
3866     test -e "$source_path/config.h" &&
3867         die "Out of tree builds are impossible with config.h in source dir."
3868 fi
3869
3870 for v in "$@"; do
3871     r=${v#*=}
3872     l=${v%"$r"}
3873     r=$(sh_quote "$r")
3874     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3875 done
3876
3877 find_things_extern(){
3878     thing=$1
3879     pattern=$2
3880     file=$source_path/$3
3881     out=${4:-$thing}
3882     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$out/p" "$file"
3883 }
3884
3885 find_filters_extern(){
3886     file=$source_path/$1
3887     sed -n 's/^extern AVFilter ff_[avfsinkrc]\{2,5\}_\([[:alnum:]_]\{1,\}\);/\1_filter/p' $file
3888 }
3889
3890 FILTER_LIST=$(find_filters_extern libavfilter/allfilters.c)
3891 OUTDEV_LIST=$(find_things_extern muxer AVOutputFormat libavdevice/alldevices.c outdev)
3892 INDEV_LIST=$(find_things_extern demuxer AVInputFormat libavdevice/alldevices.c indev)
3893 MUXER_LIST=$(find_things_extern muxer AVOutputFormat libavformat/allformats.c)
3894 DEMUXER_LIST=$(find_things_extern demuxer AVInputFormat libavformat/allformats.c)
3895 ENCODER_LIST=$(find_things_extern encoder AVCodec libavcodec/allcodecs.c)
3896 DECODER_LIST=$(find_things_extern decoder AVCodec libavcodec/allcodecs.c)
3897 CODEC_LIST="
3898     $ENCODER_LIST
3899     $DECODER_LIST
3900 "
3901 PARSER_LIST=$(find_things_extern parser AVCodecParser libavcodec/parsers.c)
3902 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3903 HWACCEL_LIST=$(find_things_extern hwaccel AVHWAccel libavcodec/hwaccels.h)
3904 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3905
3906 AVCODEC_COMPONENTS_LIST="
3907     $BSF_LIST
3908     $DECODER_LIST
3909     $ENCODER_LIST
3910     $HWACCEL_LIST
3911     $PARSER_LIST
3912 "
3913
3914 AVDEVICE_COMPONENTS_LIST="
3915     $INDEV_LIST
3916     $OUTDEV_LIST
3917 "
3918
3919 AVFILTER_COMPONENTS_LIST="
3920     $FILTER_LIST
3921 "
3922
3923 AVFORMAT_COMPONENTS_LIST="
3924     $DEMUXER_LIST
3925     $MUXER_LIST
3926     $PROTOCOL_LIST
3927 "
3928
3929 ALL_COMPONENTS="
3930     $AVCODEC_COMPONENTS_LIST
3931     $AVDEVICE_COMPONENTS_LIST
3932     $AVFILTER_COMPONENTS_LIST
3933     $AVFORMAT_COMPONENTS_LIST
3934 "
3935
3936 for n in $COMPONENT_LIST; do
3937     v=$(toupper ${n%s})_LIST
3938     eval enable \$$v
3939     eval ${n}_if_any="\$$v"
3940 done
3941
3942 enable $ARCH_EXT_LIST
3943
3944 die_unknown(){
3945     echo "Unknown option \"$1\"."
3946     echo "See $0 --help for available options."
3947     exit 1
3948 }
3949
3950 print_in_columns() {
3951     tr ' ' '\n' | sort | tr '\r\n' '  ' | awk -v col_width=24 -v width="$ncols" '
3952     {
3953         num_cols = width > col_width ? int(width / col_width) : 1;
3954         num_rows = int((NF + num_cols-1) / num_cols);
3955         y = x = 1;
3956         for (y = 1; y <= num_rows; y++) {
3957             i = y;
3958             for (x = 1; x <= num_cols; x++) {
3959                 if (i <= NF) {
3960                   line = sprintf("%s%-" col_width "s", line, $i);
3961                 }
3962                 i = i + num_rows;
3963             }
3964             print line; line = "";
3965         }
3966     }' | sed 's/ *$//'
3967 }
3968
3969 show_list() {
3970     suffix=_$1
3971     shift
3972     echo $* | sed s/$suffix//g | print_in_columns
3973     exit 0
3974 }
3975
3976 rand_list(){
3977     IFS=', '
3978     set -- $*
3979     unset IFS
3980     for thing; do
3981         comp=${thing%:*}
3982         prob=${thing#$comp}
3983         prob=${prob#:}
3984         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3985         echo "prob ${prob:-0.5}"
3986         printf '%s\n' $comp
3987     done
3988 }
3989
3990 do_random(){
3991     action=$1
3992     shift
3993     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3994     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3995 }
3996
3997 for opt do
3998     optval="${opt#*=}"
3999     case "$opt" in
4000         --extra-ldflags=*)
4001             add_ldflags $optval
4002         ;;
4003         --extra-ldexeflags=*)
4004             add_ldexeflags $optval
4005         ;;
4006         --extra-ldsoflags=*)
4007             add_ldsoflags $optval
4008         ;;
4009         --extra-ldlibflags=*)
4010             warn "The --extra-ldlibflags option is only provided for compatibility and will be\n"\
4011                  "removed in the future. Use --extra-ldsoflags instead."
4012             add_ldsoflags $optval
4013         ;;
4014         --extra-libs=*)
4015             add_extralibs $optval
4016         ;;
4017         --disable-devices)
4018             disable $INDEV_LIST $OUTDEV_LIST
4019         ;;
4020         --enable-debug=*)
4021             debuglevel="$optval"
4022         ;;
4023         --disable-programs)
4024             disable $PROGRAM_LIST
4025         ;;
4026         --disable-everything)
4027             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
4028         ;;
4029         --disable-all)
4030             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
4031             disable $LIBRARY_LIST $PROGRAM_LIST doc
4032             enable avutil
4033         ;;
4034         --enable-random|--disable-random)
4035             action=${opt%%-random}
4036             do_random ${action#--} $COMPONENT_LIST
4037         ;;
4038         --enable-random=*|--disable-random=*)
4039             action=${opt%%-random=*}
4040             do_random ${action#--} $optval
4041         ;;
4042         --enable-sdl)
4043             enable sdl2
4044         ;;
4045         --enable-*=*|--disable-*=*)
4046             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
4047             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
4048             eval list=\$$(toupper $thing)_LIST
4049             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
4050             list=$(filter "$name" $list)
4051             [ "$list" = "" ] && warn "Option $opt did not match anything"
4052             test $action = enable && warn_if_gets_disabled $list
4053             $action $list
4054         ;;
4055         --enable-yasm|--disable-yasm)
4056             warn "The ${opt} option is only provided for compatibility and will be\n"\
4057                  "removed in the future. Use --enable-x86asm / --disable-x86asm instead."
4058             test $opt = --enable-yasm && x86asm=yes || x86asm=no
4059         ;;
4060         --yasmexe=*)
4061             warn "The --yasmexe option is only provided for compatibility and will be\n"\
4062                  "removed in the future. Use --x86asmexe instead."
4063             x86asmexe="$optval"
4064         ;;
4065         --enable-?*|--disable-?*)
4066             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
4067             if is_in $option $COMPONENT_LIST; then
4068                 test $action = disable && action=unset
4069                 eval $action \$$(toupper ${option%s})_LIST
4070             elif is_in $option $CMDLINE_SELECT; then
4071                 $action $option
4072             else
4073                 die_unknown $opt
4074             fi
4075         ;;
4076         --list-*)
4077             NAME="${opt#--list-}"
4078             is_in $NAME $COMPONENT_LIST || die_unknown $opt
4079             NAME=${NAME%s}
4080             eval show_list $NAME \$$(toupper $NAME)_LIST
4081         ;;
4082         --help|-h) show_help
4083         ;;
4084         --quiet|-q) quiet=yes
4085         ;;
4086         --fatal-warnings) enable fatal_warnings
4087         ;;
4088         --libfuzzer=*)
4089             libfuzzer_path="$optval"
4090         ;;
4091         *)
4092             optname="${opt%%=*}"
4093             optname="${optname#--}"
4094             optname=$(echo "$optname" | sed 's/-/_/g')
4095             if is_in $optname $CMDLINE_SET; then
4096                 eval $optname='$optval'
4097             elif is_in $optname $CMDLINE_APPEND; then
4098                 append $optname "$optval"
4099             else
4100                 die_unknown $opt
4101             fi
4102         ;;
4103     esac
4104 done
4105
4106 for e in $env; do
4107     eval "export $e"
4108 done
4109
4110 if disabled autodetect; then
4111
4112     # Unless iconv is explicitely disabled by the user, we still want to probe
4113     # for the iconv from the libc.
4114     disabled iconv || enable libc_iconv
4115
4116     disable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
4117     disable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
4118 fi
4119 # Mark specifically enabled, but normally autodetected libraries as requested.
4120 for lib in $AUTODETECT_LIBS; do
4121     enabled $lib && request $lib
4122 done
4123 #TODO: switch to $AUTODETECT_LIBS when $THREADS_LIST is supported the same way
4124 enable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
4125 enable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
4126
4127 disabled logging && logfile=/dev/null
4128
4129 # command line configuration sanity checks
4130
4131 # we need to build at least one lib type
4132 if ! enabled_any static shared; then
4133     cat <<EOF
4134 At least one library type must be built.
4135 Specify --enable-static to build the static libraries or --enable-shared to
4136 build the shared libraries as well. To only build the shared libraries specify
4137 --disable-static in addition to --enable-shared.
4138 EOF
4139     exit 1
4140 fi
4141
4142 die_license_disabled() {
4143     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
4144 }
4145
4146 die_license_disabled_gpl() {
4147     enabled $1 || { enabled $v && die "$v is incompatible with the gpl and --enable-$1 is not specified."; }
4148 }
4149
4150 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
4151 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
4152
4153 enabled gpl && map "die_license_disabled_gpl nonfree" $EXTERNAL_LIBRARY_NONFREE_LIST
4154 map "die_license_disabled nonfree" $HWACCEL_LIBRARY_NONFREE_LIST
4155
4156 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
4157
4158 if enabled nonfree; then
4159     license="nonfree and unredistributable"
4160 elif enabled gplv3; then
4161     license="GPL version 3 or later"
4162 elif enabled lgplv3; then
4163     license="LGPL version 3 or later"
4164 elif enabled gpl; then
4165     license="GPL version 2 or later"
4166 else
4167     license="LGPL version 2.1 or later"
4168 fi
4169
4170 enabled_all gnutls openssl &&
4171     die "GnuTLS and OpenSSL must not be enabled at the same time."
4172
4173 enabled_all gnutls mbedtls &&
4174     die "GnuTLS and mbedTLS must not be enabled at the same time."
4175
4176 enabled_all openssl mbedtls &&
4177     die "OpenSSL and mbedTLS must not be enabled at the same time."
4178
4179 # Disable all the library-specific components if the library itself
4180 # is disabled, see AVCODEC_LIST and following _LIST variables.
4181
4182 disable_components(){
4183     disabled ${1} && disable $(
4184         eval components="\$$(toupper ${1})_COMPONENTS"
4185         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
4186     )
4187 }
4188
4189 map 'disable_components $v' $LIBRARY_LIST
4190
4191 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
4192 set >> $logfile
4193
4194 test -n "$valgrind" && toolchain="valgrind-memcheck"
4195
4196 enabled ossfuzz && ! echo $CFLAGS | grep -q -- "-fsanitize="  && ! echo $CFLAGS | grep -q -- "-fcoverage-mapping" &&{
4197     add_cflags  -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp -fno-omit-frame-pointer
4198     add_ldflags -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp
4199 }
4200
4201 case "$toolchain" in
4202     *-asan)
4203         cc_default="${toolchain%-asan}"
4204         add_cflags  -fsanitize=address
4205         add_ldflags -fsanitize=address
4206     ;;
4207     *-msan)
4208         cc_default="${toolchain%-msan}"
4209         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
4210         add_ldflags -fsanitize=memory
4211     ;;
4212     *-tsan)
4213         cc_default="${toolchain%-tsan}"
4214         add_cflags  -fsanitize=thread
4215         add_ldflags -fsanitize=thread
4216         case "$toolchain" in
4217             gcc-tsan)
4218                 add_cflags  -fPIC
4219                 add_ldflags -fPIC
4220                 ;;
4221         esac
4222     ;;
4223     *-usan)
4224         cc_default="${toolchain%-usan}"
4225         add_cflags  -fsanitize=undefined
4226         add_ldflags -fsanitize=undefined
4227     ;;
4228     valgrind-*)
4229         target_exec_default="valgrind"
4230         case "$toolchain" in
4231             valgrind-massif)
4232                 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"
4233                 ;;
4234             valgrind-memcheck)
4235                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
4236                 ;;
4237         esac
4238     ;;
4239     msvc)
4240         # Check whether the current MSVC version needs the C99 converter.
4241         # From MSVC 2013 (compiler major version 18) onwards, it does actually
4242         # support enough of C99 to build ffmpeg. Default to the new
4243         # behaviour if the regexp was unable to match anything, since this
4244         # successfully parses the version number of existing supported
4245         # versions that require the converter (MSVC 2010 and 2012).
4246         cl_major_ver=$(cl.exe 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
4247         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
4248             cc_default="cl.exe"
4249             cxx_default="cl.exe"
4250         else
4251             die "Unsupported MSVC version (2013 or newer required)"
4252         fi
4253         ld_default="$source_path/compat/windows/mslink"
4254         nm_default="dumpbin.exe -symbols"
4255         ar_default="lib.exe"
4256         case "$arch" in
4257         aarch64|arm64)
4258             as_default="armasm64.exe"
4259             ;;
4260         arm*)
4261             as_default="armasm.exe"
4262             ;;
4263         esac
4264         target_os_default="win32"
4265         # Use a relative path for TMPDIR. This makes sure all the
4266         # ffconf temp files are written with a relative path, avoiding
4267         # issues with msys/win32 path conversion for MSVC parameters
4268         # such as -Fo<file> or -out:<file>.
4269         TMPDIR=.
4270     ;;
4271     icl)
4272         cc_default="icl"
4273         ld_default="xilink"
4274         nm_default="dumpbin -symbols"
4275         ar_default="xilib"
4276         target_os_default="win32"
4277         TMPDIR=.
4278     ;;
4279     gcov)
4280         add_cflags  -fprofile-arcs -ftest-coverage
4281         add_ldflags -fprofile-arcs -ftest-coverage
4282     ;;
4283     llvm-cov)
4284         add_cflags -fprofile-arcs -ftest-coverage
4285         add_ldflags --coverage
4286     ;;
4287     hardened)
4288         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
4289         add_cflags   -fno-strict-overflow -fstack-protector-all
4290         add_ldflags  -Wl,-z,relro -Wl,-z,now
4291         add_cflags   -fPIE
4292         add_ldexeflags -fPIE -pie
4293     ;;
4294     ?*)
4295         die "Unknown toolchain $toolchain"
4296     ;;
4297 esac
4298
4299 if test -n "$cross_prefix"; then
4300     test -n "$arch" && test -n "$target_os" ||
4301         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
4302     enable cross_compile
4303 fi
4304
4305 set_default target_os
4306 if test "$target_os" = android; then
4307     cc_default="clang"
4308 fi
4309
4310 ar_default="${cross_prefix}${ar_default}"
4311 cc_default="${cross_prefix}${cc_default}"
4312 cxx_default="${cross_prefix}${cxx_default}"
4313 nm_default="${cross_prefix}${nm_default}"
4314 pkg_config_default="${cross_prefix}${pkg_config_default}"
4315 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
4316     ranlib_default="${cross_prefix}${ranlib_default} -D"
4317 else
4318     ranlib_default="${cross_prefix}${ranlib_default}"
4319 fi
4320 strip_default="${cross_prefix}${strip_default}"
4321 windres_default="${cross_prefix}${windres_default}"
4322
4323 sysinclude_default="${sysroot}/usr/include"
4324
4325 if enabled cuda_sdk; then
4326     warn "Option --enable-cuda-sdk is deprecated. Use --enable-cuda-nvcc instead."
4327     enable cuda_nvcc
4328 fi
4329
4330 if enabled cuda_nvcc; then
4331     nvcc_default="nvcc"
4332     nvccflags_default="-gencode arch=compute_30,code=sm_30 -O2"
4333 else
4334     nvcc_default="clang"
4335     nvccflags_default="--cuda-gpu-arch=sm_30 -O2"
4336     NVCC_C=""
4337 fi
4338
4339 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
4340     target_exec x86asmexe nvcc
4341 enabled cross_compile || host_cc_default=$cc
4342 set_default host_cc
4343
4344 pkg_config_fail_message=""
4345 if ! $pkg_config --version >/dev/null 2>&1; then
4346     warn "$pkg_config not found, library detection may fail."
4347     pkg_config=false
4348 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
4349     pkg_config_fail_message="
4350 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
4351 fi
4352
4353 if test $doxygen != $doxygen_default && \
4354   ! $doxygen --version >/dev/null 2>&1; then
4355     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
4356 fi
4357
4358 exesuf() {
4359     case $1 in
4360         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
4361     esac
4362 }
4363
4364 EXESUF=$(exesuf $target_os)
4365 HOSTEXESUF=$(exesuf $host_os)
4366
4367 # set temporary file name
4368 : ${TMPDIR:=$TEMPDIR}
4369 : ${TMPDIR:=$TMP}
4370 : ${TMPDIR:=/tmp}
4371
4372 if [ -n "$tempprefix" ] ; then
4373     mktemp(){
4374         tmpname="$tempprefix.${HOSTNAME}.${UID}"
4375         echo "$tmpname"
4376         mkdir "$tmpname"
4377     }
4378 elif ! test_cmd mktemp -u XXXXXX; then
4379     # simple replacement for missing mktemp
4380     # NOT SAFE FOR GENERAL USE
4381     mktemp(){
4382         tmpname="${2%%XXX*}.${HOSTNAME}.${UID}.$$"
4383         echo "$tmpname"
4384         mkdir "$tmpname"
4385     }
4386 fi
4387
4388 FFTMPDIR=$(mktemp -d "${TMPDIR}/ffconf.XXXXXXXX" 2> /dev/null) ||
4389     die "Unable to create temporary directory in $TMPDIR."
4390
4391 tmpfile(){
4392     tmp="${FFTMPDIR}/test"$2
4393     (set -C; exec > $tmp) 2> /dev/null ||
4394         die "Unable to create temporary file in $FFTMPDIR."
4395     eval $1=$tmp
4396 }
4397
4398 trap 'rm -rf -- "$FFTMPDIR"' EXIT
4399 trap 'exit 2' INT
4400
4401 tmpfile TMPASM .asm
4402 tmpfile TMPC   .c
4403 tmpfile TMPCPP .cpp
4404 tmpfile TMPE   $EXESUF
4405 tmpfile TMPH   .h
4406 tmpfile TMPM   .m
4407 tmpfile TMPCU  .cu
4408 tmpfile TMPO   .o
4409 tmpfile TMPS   .S
4410 tmpfile TMPSH  .sh
4411 tmpfile TMPV   .ver
4412
4413 unset -f mktemp
4414
4415 chmod +x $TMPE
4416
4417 # make sure we can execute files in $TMPDIR
4418 cat > $TMPSH 2>> $logfile <<EOF
4419 #! /bin/sh
4420 EOF
4421 chmod +x $TMPSH >> $logfile 2>&1
4422 if ! $TMPSH >> $logfile 2>&1; then
4423     cat <<EOF
4424 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
4425 variable to another directory and make sure that it is not mounted noexec.
4426 EOF
4427     die "Sanity test failed."
4428 fi
4429
4430 armasm_flags(){
4431     for flag; do
4432         case $flag in
4433             # Filter out MSVC cl.exe options from cflags that shouldn't
4434             # be passed to gas-preprocessor
4435             -M[TD]*)                                            ;;
4436             *)                  echo $flag                      ;;
4437         esac
4438    done
4439 }
4440
4441 cparser_flags(){
4442     for flag; do
4443         case $flag in
4444             -Wno-switch)             echo -Wno-switch-enum ;;
4445             -Wno-format-zero-length) ;;
4446             -Wdisabled-optimization) ;;
4447             -Wno-pointer-sign)       echo -Wno-other ;;
4448             *)                       echo $flag ;;
4449         esac
4450     done
4451 }
4452
4453 msvc_common_flags(){
4454     for flag; do
4455         case $flag in
4456             # In addition to specifying certain flags under the compiler
4457             # specific filters, they must be specified here as well or else the
4458             # generic catch all at the bottom will print the original flag.
4459             -Wall)                ;;
4460             -Wextra)              ;;
4461             -std=c*)              ;;
4462             # Common flags
4463             -fomit-frame-pointer) ;;
4464             -g)                   echo -Z7 ;;
4465             -fno-math-errno)      ;;
4466             -fno-common)          ;;
4467             -fno-signed-zeros)    ;;
4468             -fPIC)                ;;
4469             -mthumb)              ;;
4470             -march=*)             ;;
4471             -lz)                  echo zlib.lib ;;
4472             -lx264)               echo libx264.lib ;;
4473             -lstdc++)             ;;
4474             -l*)                  echo ${flag#-l}.lib ;;
4475             -LARGEADDRESSAWARE)   echo $flag ;;
4476             -L*)                  echo -libpath:${flag#-L} ;;
4477             -Wl,*)                ;;
4478             *)                    echo $flag ;;
4479         esac
4480     done
4481 }
4482
4483 msvc_flags(){
4484     msvc_common_flags "$@"
4485     for flag; do
4486         case $flag in
4487             -Wall)                echo -W3 -wd4018 -wd4146 -wd4244 -wd4305     \
4488                                        -wd4554 ;;
4489             -Wextra)              echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
4490                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
4491                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
4492                                        -wd4307 \
4493                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
4494         esac
4495     done
4496 }
4497
4498 icl_flags(){
4499     msvc_common_flags "$@"
4500     for flag; do
4501         case $flag in
4502             # Despite what Intel's documentation says -Wall, which is supported
4503             # on Windows, does enable remarks so disable them here.
4504             -Wall)                echo $flag -Qdiag-disable:remark ;;
4505             -std=c99)             echo -Qstd=c99 ;;
4506             -flto)                echo -ipo ;;
4507         esac
4508     done
4509 }
4510
4511 icc_flags(){
4512     for flag; do
4513         case $flag in
4514             -flto)                echo -ipo ;;
4515             *)                    echo $flag ;;
4516         esac
4517     done
4518 }
4519
4520 suncc_flags(){
4521     for flag; do
4522         case $flag in
4523             -march=*|-mcpu=*)
4524                 case "${flag#*=}" in
4525                     native)                   echo -xtarget=native       ;;
4526                     v9|niagara)               echo -xarch=sparc          ;;
4527                     ultrasparc)               echo -xarch=sparcvis       ;;
4528                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
4529                     i586|pentium)             echo -xchip=pentium        ;;
4530                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
4531                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
4532                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
4533                     pentium4*)          echo -xtarget=pentium4           ;;
4534                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
4535                     *-sse3)             echo -xarch=sse3                 ;;
4536                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
4537                     bonnell)                   echo -xarch=ssse3         ;;
4538                     corei7|nehalem)            echo -xtarget=nehalem     ;;
4539                     westmere)                  echo -xtarget=westmere    ;;
4540                     silvermont)                echo -xarch=sse4_2        ;;
4541                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
4542                     core-avx*|ivybridge|haswell|broadwell|skylake*|knl)
4543                                                echo -xarch=avx           ;;
4544                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
4545                     btver1)                    echo -xarch=amdsse4a      ;;
4546                     btver2|bdver*|znver*)      echo -xarch=avx           ;;
4547                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
4548                     k8|opteron|athlon64|athlon-fx)
4549                                                echo -xarch=sse2a         ;;
4550                     athlon*)                   echo -xarch=pentium_proa  ;;
4551                 esac
4552                 ;;
4553             -std=c99)             echo -xc99              ;;
4554             -fomit-frame-pointer) echo -xregs=frameptr    ;;
4555             -fPIC)                echo -KPIC -xcode=pic32 ;;
4556             -W*,*)                echo $flag              ;;
4557             -f*-*|-W*|-mimpure-text)                      ;;
4558             -shared)              echo -G                 ;;
4559             *)                    echo $flag              ;;
4560         esac
4561     done
4562 }
4563
4564 probe_cc(){
4565     pfx=$1
4566     _cc=$2
4567     first=$3
4568
4569     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
4570     unset _ld_o _ldflags _ld_lib _ld_path
4571     unset _depflags _DEPCMD _DEPFLAGS
4572     _flags_filter=echo
4573
4574     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
4575         true # no-op to avoid reading stdin in following checks
4576     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
4577         _type=llvm_gcc
4578         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
4579         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
4580         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4581         _cflags_speed='-O3'
4582         _cflags_size='-Os'
4583     elif $_cc -v 2>&1 | grep -qi ^gcc; then
4584         _type=gcc
4585         gcc_version=$($_cc --version | head -n1)
4586         gcc_basever=$($_cc -dumpversion)
4587         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
4588         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
4589         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
4590         case $gcc_basever in
4591             2) ;;
4592             2.*) ;;
4593             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
4594         esac
4595         if [ "$first" = true ]; then
4596             case $gcc_basever in
4597                 4.2*)
4598                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
4599             esac
4600         fi
4601         _cflags_speed='-O3'
4602         _cflags_size='-Os'
4603     elif $_cc --version 2>/dev/null | grep -q ^icc; then
4604         _type=icc
4605         _ident=$($_cc --version | head -n1)
4606         _depflags='-MMD'
4607         _cflags_speed='-O3'
4608         _cflags_size='-Os'
4609         _cflags_noopt='-O1'
4610         _flags_filter=icc_flags
4611     elif $_cc -v 2>&1 | grep -q xlc; then
4612         _type=xlc
4613         _ident=$($_cc -qversion 2>/dev/null | head -n1)
4614         _cflags_speed='-O5'
4615         _cflags_size='-O5 -qcompact'
4616     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
4617         test -d "$sysroot" || die "No valid sysroot specified."
4618         _type=armcc
4619         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
4620         armcc_conf="$PWD/armcc.conf"
4621         $_cc --arm_linux_configure                 \
4622              --arm_linux_config_file="$armcc_conf" \
4623              --configure_sysroot="$sysroot"        \
4624              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
4625              die "Error creating armcc configuration file."
4626         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
4627         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
4628         as_default="${cross_prefix}gcc"
4629         _depflags='-MMD'
4630         _cflags_speed='-O3'
4631         _cflags_size='-Os'
4632     elif $_cc -v 2>&1 | grep -q clang && ! $_cc -? > /dev/null 2>&1; then
4633         _type=clang
4634         _ident=$($_cc --version 2>/dev/null | head -n1)
4635         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4636         _cflags_speed='-O3'
4637         _cflags_size='-Oz'
4638     elif $_cc -V 2>&1 | grep -q Sun; then
4639         _type=suncc
4640         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
4641         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
4642         _DEPFLAGS='-xM1 -xc99'
4643         _ldflags='-std=c99'
4644         _cflags_speed='-O5'
4645         _cflags_size='-O5 -xspace'
4646         _flags_filter=suncc_flags
4647     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
4648         _type=pathscale
4649         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4650         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4651         _cflags_speed='-O2'
4652         _cflags_size='-Os'
4653         _flags_filter='filter_out -Wdisabled-optimization'
4654     elif $_cc -v 2>&1 | grep -q Open64; then
4655         _type=open64
4656         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4657         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4658         _cflags_speed='-O2'
4659         _cflags_size='-Os'
4660         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
4661     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
4662         _type=armasm
4663         _ident=$($_cc | head -n1)
4664         # 4509: "This form of conditional instruction is deprecated"
4665         _flags="-nologo -ignore 4509"
4666         _flags_filter=armasm_flags
4667     elif $_cc 2>&1 | grep -q Intel; then
4668         _type=icl
4669         _ident=$($_cc 2>&1 | head -n1)
4670         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
4671         # Not only is O3 broken on 13.x+ but it is slower on all previous
4672         # versions (tested) as well.
4673         _cflags_speed="-O2"
4674         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
4675         if $_cc 2>&1 | grep -q Linker; then
4676             _ld_o='-out:$@'
4677         else
4678             _ld_o='-Fe$@'
4679         fi
4680         _cc_o='-Fo$@'
4681         _cc_e='-P'
4682         _flags_filter=icl_flags
4683         _ld_lib='lib%.a'
4684         _ld_path='-libpath:'
4685         # -Qdiag-error to make icl error when seeing certain unknown arguments
4686         _flags='-nologo -Qdiag-error:4044,10157'
4687         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
4688         # with MSVC which enables it by default.
4689         _cflags='-Qms0 -Qvec- -Qsimd- -GS -fp:precise'
4690         disable stripping
4691     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
4692         # lld can emulate multiple different linkers; in ms link.exe mode,
4693         # the -? parameter gives the help output which contains an identifyable
4694         # string, while it gives an error in other modes.
4695         _type=lld-link
4696         # The link.exe mode doesn't have a switch for getting the version,
4697         # but we can force it back to gnu mode and get the version from there.
4698         _ident=$($_cc -flavor gnu --version 2>/dev/null)
4699         _ld_o='-out:$@'
4700         _flags_filter=msvc_flags
4701         _ld_lib='lib%.a'
4702         _ld_path='-libpath:'
4703     elif $_cc -nologo- 2>&1 | grep -q Microsoft || { $_cc -v 2>&1 | grep -q clang && $_cc -? > /dev/null 2>&1; }; then
4704         _type=msvc
4705         if $_cc -nologo- 2>&1 | grep -q Microsoft; then
4706             _ident=$($_cc 2>&1 | head -n1 | tr -d '\r')
4707         else
4708             _ident=$($_cc --version 2>/dev/null | head -n1 | tr -d '\r')
4709         fi
4710         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
4711         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
4712         _cflags_speed="-O2"
4713         _cflags_size="-O1"
4714         _cflags_noopt="-O1"
4715         if $_cc -nologo- 2>&1 | grep -q Linker; then
4716             _ld_o='-out:$@'
4717         else
4718             _ld_o='-Fe$@'
4719         fi
4720         _cc_o='-Fo$@'
4721         _cc_e='-P -Fi$@'
4722         _flags_filter=msvc_flags
4723         _ld_lib='lib%.a'
4724         _ld_path='-libpath:'
4725         _flags='-nologo'
4726         disable stripping
4727     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
4728         _type=cparser
4729         _ident=$($_cc --version | head -n1)
4730         _depflags='-MMD'
4731         _cflags_speed='-O4'
4732         _cflags_size='-O2'
4733         _flags_filter=cparser_flags
4734     fi
4735
4736     eval ${pfx}_type=\$_type
4737     eval ${pfx}_ident=\$_ident
4738 }
4739
4740 set_ccvars(){
4741     eval ${1}_C=\${_cc_c-\${${1}_C}}
4742     eval ${1}_E=\${_cc_e-\${${1}_E}}
4743     eval ${1}_O=\${_cc_o-\${${1}_O}}
4744
4745     if [ -n "$_depflags" ]; then
4746         eval ${1}_DEPFLAGS=\$_depflags
4747     else
4748         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
4749         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
4750         eval DEP${1}FLAGS=\$_flags
4751     fi
4752 }
4753
4754 probe_cc cc "$cc" "true"
4755 cflags_filter=$_flags_filter
4756 cflags_speed=$_cflags_speed
4757 cflags_size=$_cflags_size
4758 cflags_noopt=$_cflags_noopt
4759 add_cflags $_flags $_cflags
4760 cc_ldflags=$_ldflags
4761 set_ccvars CC
4762 set_ccvars CXX
4763
4764 probe_cc hostcc "$host_cc"
4765 host_cflags_filter=$_flags_filter
4766 host_cflags_speed=$_cflags_speed
4767 add_host_cflags  $_flags $_cflags
4768 set_ccvars HOSTCC
4769
4770 test -n "$cc_type" && enable $cc_type ||
4771     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4772
4773 : ${as_default:=$cc}
4774 : ${objcc_default:=$cc}
4775 : ${dep_cc_default:=$cc}
4776 : ${ld_default:=$cc}
4777 : ${host_ld_default:=$host_cc}
4778 set_default ar as objcc dep_cc ld ln_s host_ld windres
4779
4780 probe_cc as "$as"
4781 asflags_filter=$_flags_filter
4782 add_asflags $_flags $_cflags
4783 set_ccvars AS
4784
4785 probe_cc objcc "$objcc"
4786 objcflags_filter=$_flags_filter
4787 add_objcflags $_flags $_cflags
4788 set_ccvars OBJC
4789
4790 probe_cc ld "$ld"
4791 ldflags_filter=$_flags_filter
4792 add_ldflags $_flags $_ldflags
4793 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4794 LD_O=${_ld_o-$LD_O}
4795 LD_LIB=${_ld_lib-$LD_LIB}
4796 LD_PATH=${_ld_path-$LD_PATH}
4797
4798 probe_cc hostld "$host_ld"
4799 host_ldflags_filter=$_flags_filter
4800 add_host_ldflags $_flags $_ldflags
4801 HOSTLD_O=${_ld_o-$HOSTLD_O}
4802
4803 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4804     probe_cc depcc "$dep_cc"
4805     CCDEP=${_DEPCMD:-$DEPCMD}
4806     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4807     DEPCCFLAGS=$_flags
4808 fi
4809
4810 if $ar 2>&1 | grep -q Microsoft; then
4811     arflags="-nologo"
4812     ar_o='-out:$@'
4813 elif $ar 2>&1 | grep -q "\[D\] "; then
4814     arflags="rcD"
4815     ar_o='$@'
4816 else
4817     arflags="rc"
4818     ar_o='$@'
4819 fi
4820
4821 add_cflags $extra_cflags
4822 add_cxxflags $extra_cxxflags
4823 add_objcflags $extra_objcflags
4824 add_asflags $extra_cflags
4825
4826 if test -n "$sysroot"; then
4827     case "$cc_type" in
4828         gcc|llvm_gcc|clang)
4829             add_cppflags --sysroot="$sysroot"
4830             add_ldflags --sysroot="$sysroot"
4831         ;;
4832     esac
4833 fi
4834
4835 if test "$cpu" = host; then
4836     enabled cross_compile &&
4837         warn "--cpu=host makes no sense when cross-compiling."
4838
4839     case "$cc_type" in
4840         gcc|llvm_gcc)
4841             check_native(){
4842                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4843                 sed -n "/cc1.*$1=/{
4844                             s/.*$1=\\([^ ]*\\).*/\\1/
4845                             p
4846                             q
4847                         }" $TMPE
4848             }
4849             cpu=$(check_native -march || check_native -mcpu)
4850         ;;
4851         clang)
4852             check_native(){
4853                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4854                 sed -n "/cc1.*-target-cpu /{
4855                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4856                             p
4857                             q
4858                         }" $TMPE
4859             }
4860             cpu=$(check_native -march)
4861         ;;
4862     esac
4863
4864     test "${cpu:-host}" = host &&
4865         die "--cpu=host not supported with compiler $cc"
4866 fi
4867
4868 # Deal with common $arch aliases
4869 case "$arch" in
4870     aarch64|arm64)
4871         arch="aarch64"
4872     ;;
4873     arm*|iPad*|iPhone*)
4874         arch="arm"
4875     ;;
4876     mips*|IP*)
4877         case "$arch" in
4878         *el)
4879             add_cppflags -EL
4880             add_ldflags -EL
4881         ;;
4882         *eb)
4883             add_cppflags -EB
4884             add_ldflags -EB
4885         ;;
4886         esac
4887         arch="mips"
4888     ;;
4889     parisc*|hppa*)
4890         arch="parisc"
4891     ;;
4892     "Power Macintosh"|ppc*|powerpc*)
4893         arch="ppc"
4894     ;;
4895     s390|s390x)
4896         arch="s390"
4897     ;;
4898     sh4|sh)
4899         arch="sh4"
4900     ;;
4901     sun4*|sparc*)
4902         arch="sparc"
4903     ;;
4904     tilegx|tile-gx)
4905         arch="tilegx"
4906     ;;
4907     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4908         arch="x86"
4909     ;;
4910 esac
4911
4912 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4913 enable $arch
4914
4915 # Add processor-specific flags
4916 if enabled aarch64; then
4917
4918     case $cpu in
4919         armv*)
4920             cpuflags="-march=$cpu"
4921         ;;
4922         *)
4923             cpuflags="-mcpu=$cpu"
4924         ;;
4925     esac
4926
4927 elif enabled alpha; then
4928
4929     cpuflags="-mcpu=$cpu"
4930
4931 elif enabled arm; then
4932
4933     check_arm_arch() {
4934         test_cpp_condition stddef.h \
4935             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4936             $cpuflags
4937     }
4938
4939     probe_arm_arch() {
4940         if   check_arm_arch 4;        then echo armv4
4941         elif check_arm_arch 4T;       then echo armv4t
4942         elif check_arm_arch 5;        then echo armv5
4943         elif check_arm_arch 5E;       then echo armv5e
4944         elif check_arm_arch 5T;       then echo armv5t
4945         elif check_arm_arch 5TE;      then echo armv5te
4946         elif check_arm_arch 5TEJ;     then echo armv5te
4947         elif check_arm_arch 6;        then echo armv6
4948         elif check_arm_arch 6J;       then echo armv6j
4949         elif check_arm_arch 6K;       then echo armv6k
4950         elif check_arm_arch 6Z;       then echo armv6z
4951         elif check_arm_arch 6KZ;      then echo armv6zk
4952         elif check_arm_arch 6ZK;      then echo armv6zk
4953         elif check_arm_arch 6T2;      then echo armv6t2
4954         elif check_arm_arch 7;        then echo armv7
4955         elif check_arm_arch 7A  7_A;  then echo armv7-a
4956         elif check_arm_arch 7S;       then echo armv7-a
4957         elif check_arm_arch 7R  7_R;  then echo armv7-r
4958         elif check_arm_arch 7M  7_M;  then echo armv7-m
4959         elif check_arm_arch 7EM 7E_M; then echo armv7-m
4960         elif check_arm_arch 8A  8_A;  then echo armv8-a
4961         fi
4962     }
4963
4964     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4965
4966     case $cpu in
4967         armv*)
4968             cpuflags="-march=$cpu"
4969             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4970         ;;
4971         *)
4972             cpuflags="-mcpu=$cpu"
4973             case $cpu in
4974                 cortex-a*)                               subarch=armv7a  ;;
4975                 cortex-r*)                               subarch=armv7r  ;;
4976                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4977                 arm11*)                                  subarch=armv6   ;;
4978                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4979                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4980                 *)                             subarch=$(probe_arm_arch) ;;
4981             esac
4982         ;;
4983     esac
4984
4985     case "$subarch" in
4986         armv5t*)    enable fast_clz                ;;
4987         armv[6-8]*)
4988             enable fast_clz
4989             disabled fast_unaligned || enable fast_unaligned
4990             ;;
4991     esac
4992
4993 elif enabled avr32; then
4994
4995     case $cpu in
4996         ap7[02]0[0-2])
4997             subarch="avr32_ap"
4998             cpuflags="-mpart=$cpu"
4999         ;;
5000         ap)
5001             subarch="avr32_ap"
5002             cpuflags="-march=$cpu"
5003         ;;
5004         uc3[ab]*)
5005             subarch="avr32_uc"
5006             cpuflags="-mcpu=$cpu"
5007         ;;
5008         uc)
5009             subarch="avr32_uc"
5010             cpuflags="-march=$cpu"
5011         ;;
5012     esac
5013
5014 elif enabled bfin; then
5015
5016     cpuflags="-mcpu=$cpu"
5017
5018 elif enabled mips; then
5019
5020     if [ "$cpu" != "generic" ]; then
5021         disable mips32r2
5022         disable mips32r5
5023         disable mips64r2
5024         disable mips32r6
5025         disable mips64r6
5026         disable loongson2
5027         disable loongson3
5028         disable mipsdsp
5029         disable mipsdspr2
5030
5031         cpuflags="-march=$cpu"
5032
5033         case $cpu in
5034             # General ISA levels
5035             mips1|mips3)
5036             ;;
5037             mips32r2)
5038                 enable mips32r2
5039             ;;
5040             mips32r5)
5041                 enable mips32r2
5042                 enable mips32r5
5043             ;;
5044             mips64r2|mips64r5)
5045                 enable mips64r2
5046                 enable loongson3
5047             ;;
5048             # Cores from MIPS(MTI)
5049             24kc)
5050                 disable mipsfpu
5051                 enable mips32r2
5052             ;;
5053             24kf*|24kec|34kc|74Kc|1004kc)
5054                 enable mips32r2
5055             ;;
5056             24kef*|34kf*|1004kf*)
5057                 enable mipsdsp
5058                 enable mips32r2
5059             ;;
5060             p5600)
5061                 enable mips32r2
5062                 enable mips32r5
5063                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
5064             ;;
5065             i6400)
5066                 enable mips64r6
5067                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
5068             ;;
5069             p6600)
5070                 enable mips64r6
5071                 check_cflags "-mtune=p6600 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
5072             ;;
5073             # Cores from Loongson
5074             loongson2e|loongson2f|loongson3*)
5075                 enable local_aligned
5076                 enable simd_align_16
5077                 enable fast_64bit
5078                 enable fast_clz
5079                 enable fast_cmov
5080                 enable fast_unaligned
5081                 disable aligned_stack
5082                 # When gcc version less than 5.3.0, add -fno-expensive-optimizations flag.
5083                 if test "$cc_type" = "gcc"; then
5084                     case $gcc_basever in
5085                         2|2.*|3.*|4.*|5.0|5.1|5.2)
5086                         expensive_optimization_flag="-fno-expensive-optimizations"
5087                         ;;
5088                         *)
5089                         expensive_optimization_flag=""
5090                         ;;
5091                     esac
5092                 fi
5093
5094                 case $cpu in
5095                     loongson3*)
5096                         enable loongson3
5097                         cpuflags="-march=loongson3a -mhard-float $expensive_optimization_flag"
5098                     ;;
5099                     loongson2e)
5100                         enable loongson2
5101                         cpuflags="-march=loongson2e -mhard-float $expensive_optimization_flag"
5102                     ;;
5103                     loongson2f)
5104                         enable loongson2
5105                         cpuflags="-march=loongson2f -mhard-float $expensive_optimization_flag"
5106                     ;;
5107                 esac
5108             ;;
5109             *)
5110                 warn "unknown MIPS CPU"
5111             ;;
5112         esac
5113
5114     else
5115         disable mipsdsp
5116         disable mipsdspr2
5117         # Disable DSP stuff for generic CPU, it can't be detected at runtime.
5118         warn 'generic cpu selected'
5119     fi
5120
5121 elif enabled ppc; then
5122
5123     disable ldbrx
5124
5125     case $(tolower $cpu) in
5126         601|ppc601|powerpc601)
5127             cpuflags="-mcpu=601"
5128             disable altivec
5129         ;;
5130         603*|ppc603*|powerpc603*)
5131             cpuflags="-mcpu=603"
5132             disable altivec
5133         ;;
5134         604*|ppc604*|powerpc604*)
5135             cpuflags="-mcpu=604"
5136             disable altivec
5137         ;;
5138         g3|75*|ppc75*|powerpc75*)
5139             cpuflags="-mcpu=750"
5140             disable altivec
5141         ;;
5142         g4|745*|ppc745*|powerpc745*)
5143             cpuflags="-mcpu=7450"
5144             disable vsx
5145         ;;
5146         74*|ppc74*|powerpc74*)
5147             cpuflags="-mcpu=7400"
5148             disable vsx
5149         ;;
5150         g5|970|ppc970|powerpc970)
5151             cpuflags="-mcpu=970"
5152             disable vsx
5153         ;;
5154         power[3-6]*)
5155             cpuflags="-mcpu=$cpu"
5156             disable vsx
5157         ;;
5158         power[7-8]*)
5159             cpuflags="-mcpu=$cpu"
5160         ;;
5161         cell)
5162             cpuflags="-mcpu=cell"
5163             enable ldbrx
5164             disable vsx
5165         ;;
5166         e500mc)
5167             cpuflags="-mcpu=e500mc"
5168             disable altivec
5169         ;;
5170         e500v2)
5171             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
5172             disable altivec
5173             disable dcbzl
5174         ;;
5175         e500)
5176             cpuflags="-mcpu=8540 -mhard-float"
5177             disable altivec
5178             disable dcbzl
5179         ;;
5180     esac
5181
5182 elif enabled sparc; then
5183
5184     case $cpu in
5185         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
5186             cpuflags="-mcpu=$cpu"
5187         ;;
5188         ultrasparc*|niagara[234])
5189             cpuflags="-mcpu=$cpu"
5190         ;;
5191     esac
5192
5193 elif enabled x86; then
5194
5195     case $cpu in
5196         i[345]86|pentium)
5197             cpuflags="-march=$cpu"
5198             disable i686
5199             disable mmx
5200         ;;
5201         # targets that do NOT support nopl and conditional mov (cmov)
5202         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
5203             cpuflags="-march=$cpu"
5204             disable i686
5205         ;;
5206         # targets that do support nopl and conditional mov (cmov)
5207         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
5208         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|skylake*|knl\
5209         |amdfam10|barcelona|b[dt]ver*|znver*)
5210             cpuflags="-march=$cpu"
5211             enable i686
5212             enable fast_cmov
5213         ;;
5214         # targets that do support conditional mov but on which it's slow
5215         pentium4|pentium4m|prescott|nocona)
5216             cpuflags="-march=$cpu"
5217             enable i686
5218             disable fast_cmov
5219         ;;
5220     esac
5221
5222 fi
5223
5224 if [ "$cpu" != generic ]; then
5225     add_cflags  $cpuflags
5226     add_asflags $cpuflags
5227     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
5228 fi
5229
5230 # compiler sanity check
5231 test_exec <<EOF
5232 int main(void){ return 0; }
5233 EOF
5234 if test "$?" != 0; then
5235     echo "$cc is unable to create an executable file."
5236     if test -z "$cross_prefix" && ! enabled cross_compile ; then
5237         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
5238         echo "Only do this if you know what cross compiling means."
5239     fi
5240     die "C compiler test failed."
5241 fi
5242
5243 add_cppflags -D_ISOC99_SOURCE
5244 add_cxxflags -D__STDC_CONSTANT_MACROS
5245 check_cxxflags -std=c++11 || check_cxxflags -std=c++0x
5246
5247 # some compilers silently accept -std=c11, so we also need to check that the
5248 # version macro is defined properly
5249 test_cflags_cc -std=c11 ctype.h "__STDC_VERSION__ >= 201112L" &&
5250     add_cflags -std=c11 ||
5251     check_cflags -std=c99
5252
5253 check_cppflags -D_FILE_OFFSET_BITS=64
5254 check_cppflags -D_LARGEFILE_SOURCE
5255
5256 add_host_cppflags -D_ISOC99_SOURCE
5257 check_host_cflags -std=c99
5258 check_host_cflags -Wall
5259 check_host_cflags $host_cflags_speed
5260
5261 check_64bit(){
5262     arch32=$1
5263     arch64=$2
5264     expr=${3:-'sizeof(void *) > 4'}
5265     test_code cc "" "int test[2*($expr) - 1]" &&
5266         subarch=$arch64 || subarch=$arch32
5267     enable $subarch
5268 }
5269
5270 case "$arch" in
5271     aarch64|alpha|ia64)
5272         enabled shared && enable_weak pic
5273     ;;
5274     mips)
5275         check_64bit mips mips64 '_MIPS_SIM > 1'
5276         enabled shared && enable_weak pic
5277     ;;
5278     parisc)
5279         check_64bit parisc parisc64
5280         enabled shared && enable_weak pic
5281     ;;
5282     ppc)
5283         check_64bit ppc ppc64
5284         enabled shared && enable_weak pic
5285     ;;
5286     s390)
5287         check_64bit s390 s390x
5288         enabled shared && enable_weak pic
5289     ;;
5290     sparc)
5291         check_64bit sparc sparc64
5292         enabled shared && enable_weak pic
5293     ;;
5294     x86)
5295         check_64bit x86_32 x86_64
5296         # Treat x32 as x64 for now. Note it also needs pic if shared
5297         test "$subarch" = "x86_32" && test_cpp_condition stddef.h 'defined(__x86_64__)' &&
5298             subarch=x86_64 && enable x86_64 && disable x86_32
5299         if enabled x86_64; then
5300             enabled shared && enable_weak pic
5301             objformat=elf64
5302         fi
5303     ;;
5304 esac
5305
5306 # OS specific
5307 case $target_os in
5308     aix)
5309         SHFLAGS=-shared
5310         add_cppflags '-I\$(SRC_PATH)/compat/aix'
5311         enabled shared && add_ldflags -Wl,-brtl
5312         arflags='-Xany -r -c'
5313         striptype=""
5314         ;;
5315     android)
5316         disable symver
5317         enable section_data_rel_ro
5318         add_cflags -fPIE
5319         add_ldexeflags -fPIE -pie
5320         SLIB_INSTALL_NAME='$(SLIBNAME)'
5321         SLIB_INSTALL_LINKS=
5322         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
5323         ;;
5324     haiku)
5325         prefix_default="/boot/common"
5326         network_extralibs="-lnetwork"
5327         host_extralibs=
5328         ;;
5329     sunos)
5330         SHFLAGS='-shared -Wl,-h,$$(@F)'
5331         enabled x86 && append SHFLAGS -mimpure-text
5332         network_extralibs="-lsocket -lnsl"
5333         add_cppflags -D__EXTENSIONS__
5334         # When using suncc to build, the Solaris linker will mark
5335         # an executable with each instruction set encountered by
5336         # the Solaris assembler.  As our libraries contain their own
5337         # guards for processor-specific code, instead suppress
5338         # generation of the HWCAPS ELF section on Solaris x86 only.
5339         enabled_all suncc x86 &&
5340             echo "hwcap_1 = OVERRIDE;" > mapfile &&
5341             add_ldflags -Wl,-M,mapfile
5342         nm_default='nm -P -g'
5343         striptype=""
5344         version_script='-M'
5345         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
5346         ;;
5347     netbsd)
5348         disable symver
5349         oss_indev_extralibs="-lossaudio"
5350         oss_outdev_extralibs="-lossaudio"
5351         enabled gcc || check_ldflags -Wl,-zmuldefs
5352         ;;
5353     openbsd|bitrig)
5354         disable symver
5355         enable section_data_rel_ro
5356         striptype=""
5357         SHFLAGS='-shared'
5358         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
5359         SLIB_INSTALL_LINKS=
5360         oss_indev_extralibs="-lossaudio"
5361         oss_outdev_extralibs="-lossaudio"
5362         ;;
5363     dragonfly)
5364         disable symver
5365         ;;
5366     freebsd)
5367         ;;
5368     bsd/os)
5369         add_extralibs -lpoll -lgnugetopt
5370         strip="strip -d"
5371         ;;
5372     darwin)
5373         enabled ppc && add_asflags -force_cpusubtype_ALL
5374         install_name_dir_default='$(SHLIBDIR)'
5375         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(INSTALL_NAME_DIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
5376         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
5377         strip="${strip} -x"
5378         add_ldflags -Wl,-dynamic,-search_paths_first
5379         check_cflags -Werror=partial-availability
5380         SLIBSUF=".dylib"
5381         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
5382         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
5383         enabled x86_64 && objformat="macho64" || objformat="macho32"
5384         enabled_any pic shared x86_64 ||
5385             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
5386         check_headers dispatch/dispatch.h &&
5387             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
5388         if test -n "$sysroot"; then
5389             is_in -isysroot $cc $CPPFLAGS $CFLAGS || check_cppflags -isysroot $sysroot
5390             is_in -isysroot $ld $LDFLAGS          || check_ldflags  -isysroot $sysroot
5391         fi
5392         version_script='-exported_symbols_list'
5393         VERSION_SCRIPT_POSTPROCESS_CMD='tr " " "\n" | sed -n /global:/,/local:/p | grep ";" | tr ";" "\n" | sed -E "s/(.+)/_\1/g" | sed -E "s/(.+[^*])$$$$/\1*/"'
5394         # Workaround for Xcode 11 -fstack-check bug
5395         if enabled clang; then
5396             clang_version=$($cc -dumpversion)
5397             test ${clang_version%%.*} -eq 11 && add_cflags -fno-stack-check
5398         fi
5399         ;;
5400     msys*)
5401         die "Native MSYS builds are discouraged, please use the MINGW environment."
5402         ;;
5403     mingw32*|mingw64*)
5404         target_os=mingw32
5405         LIBTARGET=i386
5406         if enabled x86_64; then
5407             LIBTARGET="i386:x86-64"
5408         elif enabled arm; then
5409             LIBTARGET="arm"
5410         elif enabled aarch64; then
5411             LIBTARGET="arm64"
5412         fi
5413         if enabled shared; then
5414             # Cannot build both shared and static libs when using dllimport.
5415             disable static
5416         fi
5417         enabled shared && ! enabled small && test_cmd $windres --version && enable gnu_windres
5418         enabled x86_32 && check_ldflags -Wl,--large-address-aware
5419         shlibdir_default="$bindir_default"
5420         SLIBPREF=""
5421         SLIBSUF=".dll"
5422         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5423         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5424         if test_cmd lib.exe -list; then
5425             SLIB_EXTRA_CMD=-'lib.exe -nologo -machine:$(LIBTARGET) -def:$$(@:$(SLIBSUF)=.def) -out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
5426             if enabled x86_64; then
5427                 LIBTARGET=x64
5428             fi
5429         else
5430             SLIB_EXTRA_CMD=-'$(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
5431         fi
5432         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5433         SLIB_INSTALL_LINKS=
5434         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
5435         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
5436         SLIB_CREATE_DEF_CMD='EXTERN_PREFIX="$(EXTERN_PREFIX)" AR="$(AR_CMD)" NM="$(NM_CMD)" $(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
5437         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--disable-auto-image-base $$(@:$(SLIBSUF)=.def)'
5438         enabled x86_64 && objformat="win64" || objformat="win32"
5439         dlltool="${cross_prefix}dlltool"
5440         ranlib=:
5441         enable dos_paths
5442         check_ldflags -Wl,--nxcompat,--dynamicbase
5443         # Lets work around some stupidity in binutils.
5444         # ld will strip relocations from executables even though we need them
5445         # for dynamicbase (ASLR).  Using -pie does retain the reloc section
5446         # however ld then forgets what the entry point should be (oops) so we
5447         # have to manually (re)set it.
5448         if enabled x86_32; then
5449             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,_mainCRTStartup
5450         elif enabled x86_64; then
5451             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,mainCRTStartup
5452             check_ldflags -Wl,--high-entropy-va # binutils 2.25
5453             # Set image base >4GB for extra entropy with HEASLR
5454             add_ldexeflags -Wl,--image-base,0x140000000
5455             append SHFLAGS -Wl,--image-base,0x180000000
5456         fi
5457         ;;
5458     win32|win64)
5459         disable symver
5460         if enabled shared; then
5461             # Link to the import library instead of the normal static library
5462             # for shared libs.
5463             LD_LIB='%.lib'
5464             # Cannot build both shared and static libs with MSVC or icl.
5465             disable static
5466         fi
5467         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
5468         shlibdir_default="$bindir_default"
5469         SLIBPREF=""
5470         SLIBSUF=".dll"
5471         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5472         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5473         SLIB_CREATE_DEF_CMD='EXTERN_PREFIX="$(EXTERN_PREFIX)" $(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
5474         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5475         SLIB_INSTALL_LINKS=
5476         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
5477         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
5478         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
5479         enabled x86_64 && objformat="win64" || objformat="win32"
5480         ranlib=:
5481         enable dos_paths
5482         ;;
5483     cygwin*)
5484         target_os=cygwin
5485         shlibdir_default="$bindir_default"
5486         SLIBPREF="cyg"
5487         SLIBSUF=".dll"
5488         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5489         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5490         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5491         SLIB_INSTALL_LINKS=
5492         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
5493         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
5494         enabled x86_64 && objformat="win64" || objformat="win32"
5495         enable dos_paths
5496         enabled shared && ! enabled small && test_cmd $windres --version && enable gnu_windres
5497         add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5498         ;;
5499     *-dos|freedos|opendos)
5500         network_extralibs="-lsocket"
5501         objformat="coff"
5502         enable dos_paths
5503         ;;
5504     linux)
5505         enable section_data_rel_ro
5506         enabled_any arm aarch64 && enable_weak linux_perf
5507         ;;
5508     irix*)
5509         target_os=irix
5510         ranlib="echo ignoring ranlib"
5511         ;;
5512     os/2*)
5513         strip="lxlite -CS"
5514         striptype=""
5515         objformat="aout"
5516         add_cppflags -D_GNU_SOURCE
5517         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zhigh-mem -Zmap
5518         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
5519         LIBSUF="_s.a"
5520         SLIBPREF=""
5521         SLIBSUF=".dll"
5522         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5523         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(FULLNAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
5524         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(FULLNAME).def; \
5525             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(FULLNAME).def; \
5526             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(FULLNAME).def; \
5527             echo EXPORTS >> $(SUBDIR)$(FULLNAME).def; \
5528             emxexp $(OBJS) >> $(SUBDIR)$(FULLNAME).def'
5529         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.a $(SUBDIR)$(FULLNAME).def; \
5530             emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.lib $(SUBDIR)$(FULLNAME).def;'
5531         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5532         SLIB_INSTALL_LINKS=
5533         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(FULLNAME)_dll.a $(LIBPREF)$(FULLNAME)_dll.lib'
5534         enable dos_paths
5535         enable_weak os2threads
5536         ;;
5537     gnu/kfreebsd)
5538         add_cppflags -D_BSD_SOURCE
5539         ;;
5540     gnu)
5541         ;;
5542     qnx)
5543         add_cppflags -D_QNX_SOURCE
5544         network_extralibs="-lsocket"
5545         ;;
5546     symbian)
5547         SLIBSUF=".dll"
5548         enable dos_paths
5549         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
5550         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
5551         add_ldflags -Wl,--target1-abs,--no-undefined \
5552                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
5553                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
5554         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
5555                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
5556                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
5557         ;;
5558     minix)
5559         ;;
5560     none)
5561         ;;
5562     *)
5563         die "Unknown OS '$target_os'."
5564         ;;
5565 esac
5566
5567 # test if creating links works
5568 link_dest=$(mktemp -u $TMPDIR/dest_XXXXXXXX)
5569 link_name=$(mktemp -u $TMPDIR/name_XXXXXXXX)
5570 mkdir "$link_dest"
5571 $ln_s "$link_dest" "$link_name"
5572 touch "$link_dest/test_file"
5573 if [ "$source_path" != "." ] && [ "$source_path" != "src" ] && ([ ! -d src ] || [ -L src ]) && [ -e "$link_name/test_file" ]; then
5574     # create link to source path
5575     [ -e src ] && rm src
5576     $ln_s "$source_path" src
5577     source_link=src
5578 else
5579     # creating directory links doesn't work
5580     # fall back to using the full source path
5581     source_link="$source_path"
5582 fi
5583 # cleanup
5584 rm -r "$link_dest"
5585 rm -r "$link_name"
5586
5587 # determine libc flavour
5588
5589 probe_libc(){
5590     pfx=$1
5591     pfx_no_=${pfx%_}
5592     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
5593     if test_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
5594         eval ${pfx}libc_type=uclibc
5595         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5596     elif test_${pfx}cpp_condition features.h "defined __GLIBC__"; then
5597         eval ${pfx}libc_type=glibc
5598         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5599     # MinGW headers can be installed on Cygwin, so check for newlib first.
5600     elif test_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
5601         eval ${pfx}libc_type=newlib
5602         add_${pfx}cppflags -U__STRICT_ANSI__ -D_XOPEN_SOURCE=600
5603     # MinGW64 is backwards compatible with MinGW32, so check for it first.
5604     elif test_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
5605         eval ${pfx}libc_type=mingw64
5606         if test_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
5607             add_compat msvcrt/snprintf.o
5608             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
5609         fi
5610         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5611         eval test \$${pfx_no_}cc_type = "gcc" &&
5612             add_${pfx}cppflags -D__printf__=__gnu_printf__
5613         test_${pfx}cpp_condition windows.h "!defined(_WIN32_WINNT) || _WIN32_WINNT < 0x0600" &&
5614             add_${pfx}cppflags -D_WIN32_WINNT=0x0600
5615         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5616     elif test_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
5617          test_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
5618         eval ${pfx}libc_type=mingw32
5619         test_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
5620             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
5621             die "ERROR: MinGW32 runtime version must be >= 3.15."
5622         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5623         test_${pfx}cpp_condition _mingw.h "__MSVCRT_VERSION__ < 0x0700" &&
5624             add_${pfx}cppflags -D__MSVCRT_VERSION__=0x0700
5625         test_${pfx}cpp_condition windows.h "!defined(_WIN32_WINNT) || _WIN32_WINNT < 0x0600" &&
5626             add_${pfx}cppflags -D_WIN32_WINNT=0x0600
5627         eval test \$${pfx_no_}cc_type = "gcc" &&
5628             add_${pfx}cppflags -D__printf__=__gnu_printf__
5629         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5630     elif test_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
5631         eval ${pfx}libc_type=msvcrt
5632         if test_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
5633             if [ "$pfx" = host_ ]; then
5634                 add_host_cppflags -Dsnprintf=_snprintf
5635             else
5636                 add_compat strtod.o strtod=avpriv_strtod
5637                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
5638                                              _snprintf=avpriv_snprintf  \
5639                                              vsnprintf=avpriv_vsnprintf
5640             fi
5641         fi
5642         add_${pfx}cppflags -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS
5643         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
5644         # 0x601 by default unless something else is set by the user.
5645         # This can easily lead to us detecting functions only present
5646         # in such new versions and producing binaries requiring windows 7.0.
5647         # Therefore explicitly set the default to Vista unless the user has
5648         # set something else on the command line.
5649         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
5650         # family. For these cases, configure is free to use any functions
5651         # found in the SDK headers by default. (Alternatively, we could force
5652         # _WIN32_WINNT to 0x0602 in that case.)
5653         test_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
5654             { test_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0600; }
5655 #ifdef WINAPI_FAMILY
5656 #include <winapifamily.h>
5657 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
5658 #error not desktop
5659 #endif
5660 #endif
5661 EOF
5662         if [ "$pfx" = "" ]; then
5663             check_func strtoll || add_cflags -Dstrtoll=_strtoi64
5664             check_func strtoull || add_cflags -Dstrtoull=_strtoui64
5665         fi
5666     elif test_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
5667         eval ${pfx}libc_type=klibc
5668     elif test_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
5669         eval ${pfx}libc_type=bionic
5670     elif test_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
5671         eval ${pfx}libc_type=solaris
5672         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
5673     elif test_${pfx}cpp_condition sys/version.h "defined __DJGPP__"; then
5674         eval ${pfx}libc_type=djgpp
5675         add_cppflags -U__STRICT_ANSI__
5676         add_cflags "-include $source_path/compat/djgpp/math.h"
5677         add_compat djgpp/math.o
5678     fi
5679     test_${pfx}cc <<EOF
5680 #include <time.h>
5681 void *v = localtime_r;
5682 EOF
5683 test "$?" != 0 && test_${pfx}cc -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600 <<EOF && add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5684 #include <time.h>
5685 void *v = localtime_r;
5686 EOF
5687
5688     eval test -n "\${${pfx}libc_type}" && enable ${pfx}libc_${libc_type}
5689 }
5690
5691 probe_libc
5692 probe_libc host_
5693
5694 # hacks for compiler/libc/os combinations
5695
5696 case $libc_type in
5697     bionic)
5698         add_compat strtod.o strtod=avpriv_strtod
5699         ;;
5700 esac
5701
5702 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
5703     add_cppflags '-I\$(SRC_PATH)/compat/float'
5704
5705 test_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
5706
5707 set_default libdir
5708 : ${shlibdir_default:="$libdir"}
5709 : ${pkgconfigdir_default:="$libdir/pkgconfig"}
5710
5711 set_default $PATHS_LIST
5712 set_default nm
5713
5714 disabled optimizations || enabled ossfuzz || check_cflags -fomit-frame-pointer
5715
5716 enable_weak_pic() {
5717     disabled pic && return
5718     enable pic
5719     add_cppflags -DPIC
5720     case "$target_os" in
5721     mingw*|cygwin*|win*)
5722         ;;
5723     *)
5724         add_cflags -fPIC
5725         add_asflags -fPIC
5726         ;;
5727     esac
5728 }
5729
5730 enabled pic && enable_weak_pic
5731
5732 test_cc <<EOF || die "Symbol mangling check failed."
5733 int ff_extern;
5734 EOF
5735 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
5736 extern_prefix=${sym%%ff_extern*}
5737
5738 ! disabled inline_asm && check_inline_asm inline_asm '"" ::'
5739
5740 for restrict_keyword in restrict __restrict__ __restrict ""; do
5741     test_code cc "" "char * $restrict_keyword p" && break
5742 done
5743
5744 check_cc pragma_deprecated "" '_Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"")'
5745
5746 # The global variable ensures the bits appear unchanged in the object file.
5747 test_cc <<EOF || die "endian test failed"
5748 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
5749 EOF
5750 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
5751
5752 check_cc const_nan math.h "struct { double d; } static const bar[] = { { NAN } }"
5753
5754 if ! enabled ppc64 || enabled bigendian; then
5755     disable vsx
5756 fi
5757
5758 check_gas() {
5759     log "check_gas using '$as' as AS"
5760     # :vararg is used on aarch64, arm and ppc altivec
5761     check_as vararg "
5762 .macro m n, y:vararg=0
5763 \n: .int \y
5764 .endm
5765 m x" || return 1
5766     # .altmacro is only used in arm asm
5767     ! enabled arm || check_as gnu_as ".altmacro"
5768 }
5769
5770 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
5771     nogas=:
5772     enabled_any arm aarch64 && nogas=die
5773     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
5774     as_noop=-v
5775
5776     case $as_type in
5777         arm*) gaspp_as_type=armasm; as_noop=-h ;;
5778         gcc)  gaspp_as_type=gas ;;
5779         *)    gaspp_as_type=$as_type ;;
5780     esac
5781
5782     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
5783
5784     test "${as#*gas-preprocessor.pl}" != "$as" ||
5785     test_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- ${as:=$cc} $as_noop &&
5786         gas="${gas:=gas-preprocessor.pl} -arch $arch -as-type $gaspp_as_type -- ${as:=$cc}"
5787
5788     if ! check_gas ; then
5789         as=${gas:=$as}
5790         check_gas || \
5791             $nogas "GNU assembler not found, install/update gas-preprocessor"
5792     fi
5793
5794     check_as as_func ".func test
5795                       .endfunc"
5796 fi
5797
5798 check_inline_asm inline_asm_labels '"1:\n"'
5799
5800 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
5801
5802 if enabled aarch64; then
5803     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
5804     # internal assembler in clang 3.3 does not support this instruction
5805     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
5806     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
5807
5808     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
5809
5810 elif enabled alpha; then
5811
5812     check_cflags -mieee
5813
5814 elif enabled arm; then
5815
5816     enabled msvc && check_cpp_condition thumb stddef.h "defined _M_ARMT"
5817     test_cpp_condition stddef.h "defined __thumb__" && test_cc <<EOF && enable_weak thumb
5818 float func(float a, float b){ return a+b; }
5819 EOF
5820     enabled thumb && check_cflags -mthumb || check_cflags -marm
5821
5822     if check_cpp_condition vfp_args stddef.h "defined __ARM_PCS_VFP"; then
5823         :
5824     elif check_cpp_condition vfp_args stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
5825         :
5826     elif ! test_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
5827         case "${cross_prefix:-$cc}" in
5828             *hardfloat*) enable vfp_args; fpabi=vfp ;;
5829             *) check_ld "cc" vfp_args <<EOF && fpabi=vfp || fpabi=soft ;;
5830 __asm__ (".eabi_attribute 28, 1");
5831 int main(void) { return 0; }
5832 EOF
5833         esac
5834         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
5835     fi
5836
5837     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
5838     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
5839     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
5840     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
5841     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
5842     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
5843     enabled setend  && check_insn setend  'setend be'
5844
5845     [ $target_os = linux ] || [ $target_os = android ] ||
5846         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
5847             $ARCH_EXT_LIST_ARM
5848
5849     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
5850
5851     check_as as_arch_directive ".arch armv7-a"
5852     check_as as_dn_directive   "ra .dn d0.i16"
5853     check_as as_fpu_directive  ".fpu neon"
5854
5855     # llvm's integrated assembler supports .object_arch from llvm 3.5
5856     [ "$objformat" = elf32 ] || [ "$objformat" = elf64 ] &&
5857         check_as as_object_arch ".object_arch armv4"
5858
5859     # MS armasm fails to assemble our PIC constructs
5860     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
5861
5862 elif enabled mips; then
5863
5864     # Check toolchain ISA level
5865     if enabled mips64; then
5866         enabled mips64r6 && check_inline_asm mips64r6 '"dlsa $0, $0, $0, 1"' &&
5867             disable mips64r2
5868
5869         enabled mips64r2 && check_inline_asm mips64r2 '"dext $0, $0, 0, 1"'
5870
5871         disable mips32r6 && disable mips32r5 && disable mips32r2
5872     else
5873         enabled mips32r6 && check_inline_asm mips32r6 '"aui $0, $0, 0"' &&
5874             disable mips32r5 && disable mips32r2
5875
5876         enabled mips32r5