avcodec/libsvtav1: remove unneeded svt_av1_enc_deinit_handle()
[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     audio_frame_queue
2348     audiodsp
2349     blockdsp
2350     bswapdsp
2351     cabac
2352     cbs
2353     cbs_av1
2354     cbs_h264
2355     cbs_h265
2356     cbs_jpeg
2357     cbs_mpeg2
2358     cbs_vp9
2359     dirac_parse
2360     dnn
2361     dvprofile
2362     exif
2363     faandct
2364     faanidct
2365     fdctdsp
2366     flacdsp
2367     fmtconvert
2368     frame_thread_encoder
2369     g722dsp
2370     golomb
2371     gplv3
2372     h263dsp
2373     h264chroma
2374     h264dsp
2375     h264parse
2376     h264pred
2377     h264qpel
2378     hevcparse
2379     hpeldsp
2380     huffman
2381     huffyuvdsp
2382     huffyuvencdsp
2383     idctdsp
2384     iirfilter
2385     mdct15
2386     intrax8
2387     iso_media
2388     ividsp
2389     jpegtables
2390     lgplv3
2391     libx262
2392     llauddsp
2393     llviddsp
2394     llvidencdsp
2395     lpc
2396     lzf
2397     me_cmp
2398     mpeg_er
2399     mpegaudio
2400     mpegaudiodsp
2401     mpegaudioheader
2402     mpegvideo
2403     mpegvideoenc
2404     mss34dsp
2405     pixblockdsp
2406     qpeldsp
2407     qsv
2408     qsvdec
2409     qsvenc
2410     qsvvpp
2411     rangecoder
2412     riffdec
2413     riffenc
2414     rtpdec
2415     rtpenc_chain
2416     rv34dsp
2417     scene_sad
2418     sinewin
2419     snappy
2420     srtp
2421     startcode
2422     texturedsp
2423     texturedspenc
2424     tpeldsp
2425     vaapi_1
2426     vaapi_encode
2427     vc1dsp
2428     videodsp
2429     vp3dsp
2430     vp56dsp
2431     vp8dsp
2432     wma_freqs
2433     wmv2dsp
2434 "
2435
2436 CMDLINE_SELECT="
2437     $ARCH_EXT_LIST
2438     $CONFIG_LIST
2439     $HAVE_LIST_CMDLINE
2440     $THREADS_LIST
2441     asm
2442     cross_compile
2443     debug
2444     extra_warnings
2445     logging
2446     lto
2447     optimizations
2448     rpath
2449     stripping
2450 "
2451
2452 PATHS_LIST="
2453     bindir
2454     datadir
2455     docdir
2456     incdir
2457     libdir
2458     mandir
2459     pkgconfigdir
2460     prefix
2461     shlibdir
2462     install_name_dir
2463 "
2464
2465 CMDLINE_SET="
2466     $PATHS_LIST
2467     ar
2468     arch
2469     as
2470     assert_level
2471     build_suffix
2472     cc
2473     objcc
2474     cpu
2475     cross_prefix
2476     custom_allocator
2477     cxx
2478     dep_cc
2479     doxygen
2480     env
2481     extra_version
2482     gas
2483     host_cc
2484     host_cflags
2485     host_extralibs
2486     host_ld
2487     host_ldflags
2488     host_os
2489     ignore_tests
2490     install
2491     ld
2492     ln_s
2493     logfile
2494     malloc_prefix
2495     nm
2496     optflags
2497     nvcc
2498     nvccflags
2499     pkg_config
2500     pkg_config_flags
2501     progs_suffix
2502     random_seed
2503     ranlib
2504     samples
2505     strip
2506     sws_max_filter_size
2507     sysinclude
2508     sysroot
2509     target_exec
2510     target_os
2511     target_path
2512     target_samples
2513     tempprefix
2514     toolchain
2515     valgrind
2516     windres
2517     x86asmexe
2518 "
2519
2520 CMDLINE_APPEND="
2521     extra_cflags
2522     extra_cxxflags
2523     extra_objcflags
2524     host_cppflags
2525 "
2526
2527 # code dependency declarations
2528
2529 # architecture extensions
2530
2531 armv5te_deps="arm"
2532 armv6_deps="arm"
2533 armv6t2_deps="arm"
2534 armv8_deps="aarch64"
2535 neon_deps_any="aarch64 arm"
2536 intrinsics_neon_deps="neon"
2537 vfp_deps_any="aarch64 arm"
2538 vfpv3_deps="vfp"
2539 setend_deps="arm"
2540
2541 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2542
2543 altivec_deps="ppc"
2544 dcbzl_deps="ppc"
2545 ldbrx_deps="ppc"
2546 ppc4xx_deps="ppc"
2547 vsx_deps="altivec"
2548 power8_deps="vsx"
2549
2550 loongson2_deps="mips"
2551 loongson3_deps="mips"
2552 mips32r2_deps="mips"
2553 mips32r5_deps="mips"
2554 mips32r6_deps="mips"
2555 mips64r2_deps="mips"
2556 mips64r6_deps="mips"
2557 mipsfpu_deps="mips"
2558 mipsdsp_deps="mips"
2559 mipsdspr2_deps="mips"
2560 mmi_deps_any="loongson2 loongson3"
2561 msa_deps="mipsfpu"
2562 msa2_deps="msa"
2563
2564 cpunop_deps="i686"
2565 x86_64_select="i686"
2566 x86_64_suggest="fast_cmov"
2567
2568 amd3dnow_deps="mmx"
2569 amd3dnowext_deps="amd3dnow"
2570 i686_deps="x86"
2571 mmx_deps="x86"
2572 mmxext_deps="mmx"
2573 sse_deps="mmxext"
2574 sse2_deps="sse"
2575 sse3_deps="sse2"
2576 ssse3_deps="sse3"
2577 sse4_deps="ssse3"
2578 sse42_deps="sse4"
2579 aesni_deps="sse42"
2580 avx_deps="sse42"
2581 xop_deps="avx"
2582 fma3_deps="avx"
2583 fma4_deps="avx"
2584 avx2_deps="avx"
2585 avx512_deps="avx2"
2586
2587 mmx_external_deps="x86asm"
2588 mmx_inline_deps="inline_asm x86"
2589 mmx_suggest="mmx_external mmx_inline"
2590
2591 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2592     eval dep=\$${ext}_deps
2593     eval ${ext}_external_deps='"${dep}_external"'
2594     eval ${ext}_inline_deps='"${dep}_inline"'
2595     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2596 done
2597
2598 aligned_stack_if_any="aarch64 ppc x86"
2599 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2600 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2601 fast_unaligned_if_any="aarch64 ppc x86"
2602 simd_align_16_if_any="altivec neon sse"
2603 simd_align_32_if_any="avx"
2604 simd_align_64_if_any="avx512"
2605
2606 # system capabilities
2607 linux_perf_deps="linux_perf_event_h"
2608 symver_if_any="symver_asm_label symver_gnu_asm"
2609 valgrind_backtrace_conflict="optimizations"
2610 valgrind_backtrace_deps="valgrind_valgrind_h"
2611
2612 # threading support
2613 atomics_gcc_if="sync_val_compare_and_swap"
2614 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2615 atomics_win32_if="MemoryBarrier"
2616 atomics_native_if_any="$ATOMICS_LIST"
2617 w32threads_deps="atomics_native"
2618 threads_if_any="$THREADS_LIST"
2619
2620 # subsystems
2621 cbs_av1_select="cbs"
2622 cbs_h264_select="cbs"
2623 cbs_h265_select="cbs"
2624 cbs_jpeg_select="cbs"
2625 cbs_mpeg2_select="cbs"
2626 cbs_vp9_select="cbs"
2627 dct_select="rdft"
2628 dirac_parse_select="golomb"
2629 dnn_suggest="libtensorflow libopenvino"
2630 error_resilience_select="me_cmp"
2631 faandct_deps="faan"
2632 faandct_select="fdctdsp"
2633 faanidct_deps="faan"
2634 faanidct_select="idctdsp"
2635 h264dsp_select="startcode"
2636 hevcparse_select="golomb"
2637 frame_thread_encoder_deps="encoders threads"
2638 intrax8_select="blockdsp idctdsp"
2639 mdct_select="fft"
2640 mdct15_select="fft"
2641 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2642 mpeg_er_select="error_resilience"
2643 mpegaudio_select="mpegaudiodsp mpegaudioheader"
2644 mpegaudiodsp_select="dct"
2645 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2646 mpegvideoenc_select="aandcttables me_cmp mpegvideo pixblockdsp qpeldsp"
2647 vc1dsp_select="h264chroma qpeldsp startcode"
2648 rdft_select="fft"
2649
2650 # decoders / encoders
2651 aac_decoder_select="adts_header mdct15 mdct sinewin"
2652 aac_fixed_decoder_select="adts_header mdct sinewin"
2653 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2654 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2655 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2656 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2657 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2658 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2659 acelp_kelvin_decoder_select="audiodsp"
2660 adpcm_g722_decoder_select="g722dsp"
2661 adpcm_g722_encoder_select="g722dsp"
2662 aic_decoder_select="golomb idctdsp"
2663 alac_encoder_select="lpc"
2664 als_decoder_select="bswapdsp"
2665 amrnb_decoder_select="lsp"
2666 amrwb_decoder_select="lsp"
2667 amv_decoder_select="sp5x_decoder exif"
2668 amv_encoder_select="jpegtables mpegvideoenc"
2669 ape_decoder_select="bswapdsp llauddsp"
2670 apng_decoder_deps="zlib"
2671 apng_encoder_deps="zlib"
2672 apng_encoder_select="llvidencdsp"
2673 aptx_decoder_select="audio_frame_queue"
2674 aptx_encoder_select="audio_frame_queue"
2675 aptx_hd_decoder_select="audio_frame_queue"
2676 aptx_hd_encoder_select="audio_frame_queue"
2677 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2678 asv1_encoder_select="aandcttables bswapdsp fdctdsp pixblockdsp"
2679 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2680 asv2_encoder_select="aandcttables bswapdsp fdctdsp pixblockdsp"
2681 atrac1_decoder_select="mdct sinewin"
2682 atrac3_decoder_select="mdct"
2683 atrac3al_decoder_select="mdct"
2684 atrac3p_decoder_select="mdct sinewin"
2685 atrac3pal_decoder_select="mdct sinewin"
2686 atrac9_decoder_select="mdct"
2687 avrn_decoder_select="exif jpegtables"
2688 bink_decoder_select="blockdsp hpeldsp"
2689 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2690 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2691 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2692 clearvideo_decoder_select="idctdsp"
2693 cllc_decoder_select="bswapdsp"
2694 comfortnoise_encoder_select="lpc"
2695 cook_decoder_select="audiodsp mdct sinewin"
2696 cscd_decoder_select="lzo"
2697 cscd_decoder_suggest="zlib"
2698 dca_decoder_select="mdct"
2699 dca_encoder_select="mdct"
2700 dds_decoder_select="texturedsp"
2701 dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
2702 dnxhd_decoder_select="blockdsp idctdsp"
2703 dnxhd_encoder_select="blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2704 dolby_e_decoder_select="mdct"
2705 dvvideo_decoder_select="dvprofile idctdsp"
2706 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2707 dxa_decoder_deps="zlib"
2708 dxv_decoder_select="lzf texturedsp"
2709 eac3_decoder_select="ac3_decoder"
2710 eac3_encoder_select="ac3_encoder"
2711 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2712 eatgq_decoder_select="aandcttables"
2713 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2714 exr_decoder_deps="zlib"
2715 ffv1_decoder_select="rangecoder"
2716 ffv1_encoder_select="rangecoder"
2717 ffvhuff_decoder_select="huffyuv_decoder"
2718 ffvhuff_encoder_select="huffyuv_encoder"
2719 fic_decoder_select="golomb"
2720 flac_decoder_select="flacdsp"
2721 flac_encoder_select="bswapdsp flacdsp lpc"
2722 flashsv2_decoder_deps="zlib"
2723 flashsv2_encoder_deps="zlib"
2724 flashsv_decoder_deps="zlib"
2725 flashsv_encoder_deps="zlib"
2726 flv_decoder_select="h263_decoder"
2727 flv_encoder_select="h263_encoder"
2728 fourxm_decoder_select="blockdsp bswapdsp"
2729 fraps_decoder_select="bswapdsp huffman"
2730 g2m_decoder_deps="zlib"
2731 g2m_decoder_select="blockdsp idctdsp jpegtables"
2732 g729_decoder_select="audiodsp"
2733 h261_decoder_select="mpegvideo"
2734 h261_encoder_select="mpegvideoenc"
2735 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2736 h263_encoder_select="h263dsp mpegvideoenc"
2737 h263i_decoder_select="h263_decoder"
2738 h263p_decoder_select="h263_decoder"
2739 h263p_encoder_select="h263_encoder"
2740 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
2741 h264_decoder_suggest="error_resilience"
2742 hap_decoder_select="snappy texturedsp"
2743 hap_encoder_deps="libsnappy"
2744 hap_encoder_select="texturedspenc"
2745 hevc_decoder_select="bswapdsp cabac golomb hevcparse videodsp"
2746 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2747 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llvidencdsp"
2748 hymt_decoder_select="huffyuv_decoder"
2749 iac_decoder_select="imc_decoder"
2750 imc_decoder_select="bswapdsp fft mdct sinewin"
2751 imm4_decoder_select="bswapdsp"
2752 imm5_decoder_select="h264_decoder hevc_decoder"
2753 indeo3_decoder_select="hpeldsp"
2754 indeo4_decoder_select="ividsp"
2755 indeo5_decoder_select="ividsp"
2756 interplay_video_decoder_select="hpeldsp"
2757 jpegls_decoder_select="mjpeg_decoder"
2758 jv_decoder_select="blockdsp"
2759 lagarith_decoder_select="llviddsp"
2760 ljpeg_encoder_select="idctdsp jpegtables mpegvideoenc"
2761 lscr_decoder_deps="zlib"
2762 magicyuv_decoder_select="llviddsp"
2763 magicyuv_encoder_select="llvidencdsp"
2764 mdec_decoder_select="blockdsp bswapdsp idctdsp mpegvideo"
2765 metasound_decoder_select="lsp mdct sinewin"
2766 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2767 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2768 mjpeg_encoder_select="jpegtables mpegvideoenc"
2769 mjpegb_decoder_select="mjpeg_decoder"
2770 mlp_decoder_select="mlp_parser"
2771 mlp_encoder_select="lpc audio_frame_queue"
2772 motionpixels_decoder_select="bswapdsp"
2773 mp1_decoder_select="mpegaudio"
2774 mp1float_decoder_select="mpegaudio"
2775 mp2_decoder_select="mpegaudio"
2776 mp2float_decoder_select="mpegaudio"
2777 mp3_decoder_select="mpegaudio"
2778 mp3adu_decoder_select="mpegaudio"
2779 mp3adufloat_decoder_select="mpegaudio"
2780 mp3float_decoder_select="mpegaudio"
2781 mp3on4_decoder_select="mpegaudio"
2782 mp3on4float_decoder_select="mpegaudio"
2783 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2784 mpc8_decoder_select="mpegaudiodsp"
2785 mpegvideo_decoder_select="mpegvideo"
2786 mpeg1video_decoder_select="mpegvideo"
2787 mpeg1video_encoder_select="mpegvideoenc h263dsp"
2788 mpeg2video_decoder_select="mpegvideo"
2789 mpeg2video_encoder_select="mpegvideoenc h263dsp"
2790 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2791 mpeg4_encoder_select="h263_encoder"
2792 msa1_decoder_select="mss34dsp"
2793 mscc_decoder_deps="zlib"
2794 msmpeg4v1_decoder_select="h263_decoder"
2795 msmpeg4v2_decoder_select="h263_decoder"
2796 msmpeg4v2_encoder_select="h263_encoder"
2797 msmpeg4v3_decoder_select="h263_decoder"
2798 msmpeg4v3_encoder_select="h263_encoder"
2799 mss2_decoder_select="mpegvideo qpeldsp vc1_decoder"
2800 mts2_decoder_select="mss34dsp"
2801 mv30_decoder_select="aandcttables blockdsp"
2802 mvha_decoder_deps="zlib"
2803 mvha_decoder_select="llviddsp"
2804 mwsc_decoder_deps="zlib"
2805 mxpeg_decoder_select="mjpeg_decoder"
2806 nellymoser_decoder_select="mdct sinewin"
2807 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2808 notchlc_decoder_select="lzf"
2809 nuv_decoder_select="idctdsp lzo"
2810 on2avc_decoder_select="mdct"
2811 opus_decoder_deps="swresample"
2812 opus_decoder_select="mdct15"
2813 opus_encoder_select="audio_frame_queue mdct15"
2814 png_decoder_deps="zlib"
2815 png_encoder_deps="zlib"
2816 png_encoder_select="llvidencdsp"
2817 prores_decoder_select="blockdsp idctdsp"
2818 prores_encoder_select="fdctdsp"
2819 qcelp_decoder_select="lsp"
2820 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2821 ra_144_decoder_select="audiodsp"
2822 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2823 ralf_decoder_select="golomb"
2824 rasc_decoder_deps="zlib"
2825 rawvideo_decoder_select="bswapdsp"
2826 rscc_decoder_deps="zlib"
2827 rtjpeg_decoder_select="me_cmp"
2828 rv10_decoder_select="h263_decoder"
2829 rv10_encoder_select="h263_encoder"
2830 rv20_decoder_select="h263_decoder"
2831 rv20_encoder_select="h263_encoder"
2832 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2833 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2834 screenpresso_decoder_deps="zlib"
2835 shorten_decoder_select="bswapdsp"
2836 sipr_decoder_select="lsp"
2837 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2838 snow_encoder_select="dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2839 sonic_decoder_select="golomb rangecoder"
2840 sonic_encoder_select="golomb rangecoder"
2841 sonic_ls_encoder_select="golomb rangecoder"
2842 sp5x_decoder_select="mjpeg_decoder"
2843 speedhq_decoder_select="mpegvideo"
2844 srgc_decoder_deps="zlib"
2845 svq1_decoder_select="hpeldsp"
2846 svq1_encoder_select="hpeldsp me_cmp mpegvideoenc"
2847 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2848 svq3_decoder_suggest="zlib"
2849 tak_decoder_select="audiodsp"
2850 tdsc_decoder_deps="zlib"
2851 tdsc_decoder_select="mjpeg_decoder"
2852 theora_decoder_select="vp3_decoder"
2853 thp_decoder_select="mjpeg_decoder"
2854 tiff_decoder_select="mjpeg_decoder"
2855 tiff_decoder_suggest="zlib lzma"
2856 tiff_encoder_suggest="zlib"
2857 truehd_decoder_select="mlp_parser"
2858 truehd_encoder_select="lpc audio_frame_queue"
2859 truemotion2_decoder_select="bswapdsp"
2860 truespeech_decoder_select="bswapdsp"
2861 tscc_decoder_deps="zlib"
2862 twinvq_decoder_select="mdct lsp sinewin"
2863 txd_decoder_select="texturedsp"
2864 utvideo_decoder_select="bswapdsp llviddsp"
2865 utvideo_encoder_select="bswapdsp huffman llvidencdsp"
2866 vble_decoder_select="llviddsp"
2867 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 mpegvideo vc1dsp"
2868 vc1image_decoder_select="vc1_decoder"
2869 vorbis_decoder_select="mdct"
2870 vorbis_encoder_select="audio_frame_queue mdct"
2871 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2872 vp4_decoder_select="vp3_decoder"
2873 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2874 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2875 vp6a_decoder_select="vp6_decoder"
2876 vp6f_decoder_select="vp6_decoder"
2877 vp7_decoder_select="h264pred videodsp vp8dsp"
2878 vp8_decoder_select="h264pred videodsp vp8dsp"
2879 vp9_decoder_select="videodsp vp9_parser vp9_superframe_split_bsf"
2880 wcmv_decoder_deps="zlib"
2881 webp_decoder_select="vp8_decoder exif"
2882 wmalossless_decoder_select="llauddsp"
2883 wmapro_decoder_select="mdct sinewin wma_freqs"
2884 wmav1_decoder_select="mdct sinewin wma_freqs"
2885 wmav1_encoder_select="mdct sinewin wma_freqs"
2886 wmav2_decoder_select="mdct sinewin wma_freqs"
2887 wmav2_encoder_select="mdct sinewin wma_freqs"
2888 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2889 wmv1_decoder_select="h263_decoder"
2890 wmv1_encoder_select="h263_encoder"
2891 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2892 wmv2_encoder_select="h263_encoder wmv2dsp"
2893 wmv3_decoder_select="vc1_decoder"
2894 wmv3image_decoder_select="wmv3_decoder"
2895 xma1_decoder_select="wmapro_decoder"
2896 xma2_decoder_select="wmapro_decoder"
2897 ylc_decoder_select="bswapdsp"
2898 zerocodec_decoder_deps="zlib"
2899 zlib_decoder_deps="zlib"
2900 zlib_encoder_deps="zlib"
2901 zmbv_decoder_deps="zlib"
2902 zmbv_encoder_deps="zlib"
2903
2904 # hardware accelerators
2905 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2906 cuda_deps="ffnvcodec"
2907 cuvid_deps="ffnvcodec"
2908 d3d11va_deps="dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2909 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode ole32 user32"
2910 ffnvcodec_deps_any="libdl LoadLibrary"
2911 nvdec_deps="ffnvcodec"
2912 vaapi_x11_deps="xlib"
2913 videotoolbox_hwaccel_deps="videotoolbox pthreads"
2914 videotoolbox_hwaccel_extralibs="-framework QuartzCore"
2915 xvmc_deps="X11_extensions_XvMClib_h"
2916
2917 h263_vaapi_hwaccel_deps="vaapi"
2918 h263_vaapi_hwaccel_select="h263_decoder"
2919 h263_videotoolbox_hwaccel_deps="videotoolbox"
2920 h263_videotoolbox_hwaccel_select="h263_decoder"
2921 h264_d3d11va_hwaccel_deps="d3d11va"
2922 h264_d3d11va_hwaccel_select="h264_decoder"
2923 h264_d3d11va2_hwaccel_deps="d3d11va"
2924 h264_d3d11va2_hwaccel_select="h264_decoder"
2925 h264_dxva2_hwaccel_deps="dxva2"
2926 h264_dxva2_hwaccel_select="h264_decoder"
2927 h264_nvdec_hwaccel_deps="nvdec"
2928 h264_nvdec_hwaccel_select="h264_decoder"
2929 h264_vaapi_hwaccel_deps="vaapi"
2930 h264_vaapi_hwaccel_select="h264_decoder"
2931 h264_vdpau_hwaccel_deps="vdpau"
2932 h264_vdpau_hwaccel_select="h264_decoder"
2933 h264_videotoolbox_hwaccel_deps="videotoolbox"
2934 h264_videotoolbox_hwaccel_select="h264_decoder"
2935 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2936 hevc_d3d11va_hwaccel_select="hevc_decoder"
2937 hevc_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2938 hevc_d3d11va2_hwaccel_select="hevc_decoder"
2939 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2940 hevc_dxva2_hwaccel_select="hevc_decoder"
2941 hevc_nvdec_hwaccel_deps="nvdec"
2942 hevc_nvdec_hwaccel_select="hevc_decoder"
2943 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2944 hevc_vaapi_hwaccel_select="hevc_decoder"
2945 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2946 hevc_vdpau_hwaccel_select="hevc_decoder"
2947 hevc_videotoolbox_hwaccel_deps="videotoolbox"
2948 hevc_videotoolbox_hwaccel_select="hevc_decoder"
2949 mjpeg_nvdec_hwaccel_deps="nvdec"
2950 mjpeg_nvdec_hwaccel_select="mjpeg_decoder"
2951 mjpeg_vaapi_hwaccel_deps="vaapi"
2952 mjpeg_vaapi_hwaccel_select="mjpeg_decoder"
2953 mpeg_xvmc_hwaccel_deps="xvmc"
2954 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2955 mpeg1_nvdec_hwaccel_deps="nvdec"
2956 mpeg1_nvdec_hwaccel_select="mpeg1video_decoder"
2957 mpeg1_vdpau_hwaccel_deps="vdpau"
2958 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2959 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2960 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2961 mpeg1_xvmc_hwaccel_deps="xvmc"
2962 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2963 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2964 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2965 mpeg2_d3d11va2_hwaccel_deps="d3d11va"
2966 mpeg2_d3d11va2_hwaccel_select="mpeg2video_decoder"
2967 mpeg2_dxva2_hwaccel_deps="dxva2"
2968 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2969 mpeg2_nvdec_hwaccel_deps="nvdec"
2970 mpeg2_nvdec_hwaccel_select="mpeg2video_decoder"
2971 mpeg2_vaapi_hwaccel_deps="vaapi"
2972 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2973 mpeg2_vdpau_hwaccel_deps="vdpau"
2974 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2975 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2976 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2977 mpeg2_xvmc_hwaccel_deps="xvmc"
2978 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2979 mpeg4_nvdec_hwaccel_deps="nvdec"
2980 mpeg4_nvdec_hwaccel_select="mpeg4_decoder"
2981 mpeg4_vaapi_hwaccel_deps="vaapi"
2982 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2983 mpeg4_vdpau_hwaccel_deps="vdpau"
2984 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2985 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2986 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2987 vc1_d3d11va_hwaccel_deps="d3d11va"
2988 vc1_d3d11va_hwaccel_select="vc1_decoder"
2989 vc1_d3d11va2_hwaccel_deps="d3d11va"
2990 vc1_d3d11va2_hwaccel_select="vc1_decoder"
2991 vc1_dxva2_hwaccel_deps="dxva2"
2992 vc1_dxva2_hwaccel_select="vc1_decoder"
2993 vc1_nvdec_hwaccel_deps="nvdec"
2994 vc1_nvdec_hwaccel_select="vc1_decoder"
2995 vc1_vaapi_hwaccel_deps="vaapi"
2996 vc1_vaapi_hwaccel_select="vc1_decoder"
2997 vc1_vdpau_hwaccel_deps="vdpau"
2998 vc1_vdpau_hwaccel_select="vc1_decoder"
2999 vp8_nvdec_hwaccel_deps="nvdec"
3000 vp8_nvdec_hwaccel_select="vp8_decoder"
3001 vp8_vaapi_hwaccel_deps="vaapi"
3002 vp8_vaapi_hwaccel_select="vp8_decoder"
3003 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
3004 vp9_d3d11va_hwaccel_select="vp9_decoder"
3005 vp9_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
3006 vp9_d3d11va2_hwaccel_select="vp9_decoder"
3007 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
3008 vp9_dxva2_hwaccel_select="vp9_decoder"
3009 vp9_nvdec_hwaccel_deps="nvdec"
3010 vp9_nvdec_hwaccel_select="vp9_decoder"
3011 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9_bit_depth"
3012 vp9_vaapi_hwaccel_select="vp9_decoder"
3013 vp9_vdpau_hwaccel_deps="vdpau VdpPictureInfoVP9"
3014 vp9_vdpau_hwaccel_select="vp9_decoder"
3015 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
3016 wmv3_d3d11va2_hwaccel_select="vc1_d3d11va2_hwaccel"
3017 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
3018 wmv3_nvdec_hwaccel_select="vc1_nvdec_hwaccel"
3019 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
3020 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
3021
3022 # hardware-accelerated codecs
3023 mediafoundation_deps="mftransform_h MFCreateAlignedMemoryBuffer"
3024 mediafoundation_extralibs="-lmfplat -lmfuuid -lole32 -lstrmiids"
3025 omx_deps="libdl pthreads"
3026 omx_rpi_select="omx"
3027 qsv_deps="libmfx"
3028 qsvdec_select="qsv"
3029 qsvenc_select="qsv"
3030 qsvvpp_select="qsv"
3031 vaapi_encode_deps="vaapi"
3032 v4l2_m2m_deps="linux_videodev2_h sem_timedwait"
3033
3034 hwupload_cuda_filter_deps="ffnvcodec"
3035 scale_npp_filter_deps="ffnvcodec libnpp"
3036 scale_cuda_filter_deps="ffnvcodec"
3037 scale_cuda_filter_deps_any="cuda_nvcc cuda_llvm"
3038 thumbnail_cuda_filter_deps="ffnvcodec"
3039 thumbnail_cuda_filter_deps_any="cuda_nvcc cuda_llvm"
3040 transpose_npp_filter_deps="ffnvcodec libnpp"
3041 overlay_cuda_filter_deps="ffnvcodec"
3042 overlay_cuda_filter_deps_any="cuda_nvcc cuda_llvm"
3043
3044 amf_deps_any="libdl LoadLibrary"
3045 nvenc_deps="ffnvcodec"
3046 nvenc_deps_any="libdl LoadLibrary"
3047 nvenc_encoder_deps="nvenc"
3048
3049 aac_mf_encoder_deps="mediafoundation"
3050 ac3_mf_encoder_deps="mediafoundation"
3051 h263_v4l2m2m_decoder_deps="v4l2_m2m h263_v4l2_m2m"
3052 h263_v4l2m2m_encoder_deps="v4l2_m2m h263_v4l2_m2m"
3053 h264_amf_encoder_deps="amf"
3054 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
3055 h264_cuvid_decoder_deps="cuvid"
3056 h264_cuvid_decoder_select="h264_mp4toannexb_bsf"
3057 h264_mediacodec_decoder_deps="mediacodec"
3058 h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
3059 h264_mf_encoder_deps="mediafoundation"
3060 h264_mmal_decoder_deps="mmal"
3061 h264_nvenc_encoder_deps="nvenc"
3062 h264_omx_encoder_deps="omx"
3063 h264_qsv_decoder_select="h264_mp4toannexb_bsf qsvdec"
3064 h264_qsv_encoder_select="qsvenc"
3065 h264_rkmpp_decoder_deps="rkmpp"
3066 h264_rkmpp_decoder_select="h264_mp4toannexb_bsf"
3067 h264_vaapi_encoder_select="cbs_h264 vaapi_encode"
3068 h264_v4l2m2m_decoder_deps="v4l2_m2m h264_v4l2_m2m"
3069 h264_v4l2m2m_decoder_select="h264_mp4toannexb_bsf"
3070 h264_v4l2m2m_encoder_deps="v4l2_m2m h264_v4l2_m2m"
3071 hevc_amf_encoder_deps="amf"
3072 hevc_cuvid_decoder_deps="cuvid"
3073 hevc_cuvid_decoder_select="hevc_mp4toannexb_bsf"
3074 hevc_mediacodec_decoder_deps="mediacodec"
3075 hevc_mediacodec_decoder_select="hevc_mp4toannexb_bsf hevc_parser"
3076 hevc_mf_encoder_deps="mediafoundation"
3077 hevc_nvenc_encoder_deps="nvenc"
3078 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf qsvdec"
3079 hevc_qsv_encoder_select="hevcparse qsvenc"
3080 hevc_rkmpp_decoder_deps="rkmpp"
3081 hevc_rkmpp_decoder_select="hevc_mp4toannexb_bsf"
3082 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
3083 hevc_vaapi_encoder_select="cbs_h265 vaapi_encode"
3084 hevc_v4l2m2m_decoder_deps="v4l2_m2m hevc_v4l2_m2m"
3085 hevc_v4l2m2m_decoder_select="hevc_mp4toannexb_bsf"
3086 hevc_v4l2m2m_encoder_deps="v4l2_m2m hevc_v4l2_m2m"
3087 mjpeg_cuvid_decoder_deps="cuvid"
3088 mjpeg_qsv_decoder_select="qsvdec"
3089 mjpeg_qsv_encoder_deps="libmfx"
3090 mjpeg_qsv_encoder_select="qsvenc"
3091 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
3092 mjpeg_vaapi_encoder_select="cbs_jpeg jpegtables vaapi_encode"
3093 mp3_mf_encoder_deps="mediafoundation"
3094 mpeg1_cuvid_decoder_deps="cuvid"
3095 mpeg1_v4l2m2m_decoder_deps="v4l2_m2m mpeg1_v4l2_m2m"
3096 mpeg2_crystalhd_decoder_select="crystalhd"
3097 mpeg2_cuvid_decoder_deps="cuvid"
3098 mpeg2_mmal_decoder_deps="mmal"
3099 mpeg2_mediacodec_decoder_deps="mediacodec"
3100 mpeg2_qsv_decoder_select="qsvdec"
3101 mpeg2_qsv_encoder_select="qsvenc"
3102 mpeg2_vaapi_encoder_select="cbs_mpeg2 vaapi_encode"
3103 mpeg2_v4l2m2m_decoder_deps="v4l2_m2m mpeg2_v4l2_m2m"
3104 mpeg4_crystalhd_decoder_select="crystalhd"
3105 mpeg4_cuvid_decoder_deps="cuvid"
3106 mpeg4_mediacodec_decoder_deps="mediacodec"
3107 mpeg4_mmal_decoder_deps="mmal"
3108 mpeg4_omx_encoder_deps="omx"
3109 mpeg4_v4l2m2m_decoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
3110 mpeg4_v4l2m2m_encoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
3111 msmpeg4_crystalhd_decoder_select="crystalhd"
3112 nvenc_h264_encoder_select="h264_nvenc_encoder"
3113 nvenc_hevc_encoder_select="hevc_nvenc_encoder"
3114 vc1_crystalhd_decoder_select="crystalhd"
3115 vc1_cuvid_decoder_deps="cuvid"
3116 vc1_mmal_decoder_deps="mmal"
3117 vc1_qsv_decoder_select="qsvdec"
3118 vc1_v4l2m2m_decoder_deps="v4l2_m2m vc1_v4l2_m2m"
3119 vp8_cuvid_decoder_deps="cuvid"
3120 vp8_mediacodec_decoder_deps="mediacodec"
3121 vp8_qsv_decoder_select="qsvdec"
3122 vp8_rkmpp_decoder_deps="rkmpp"
3123 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
3124 vp8_vaapi_encoder_select="vaapi_encode"
3125 vp8_v4l2m2m_decoder_deps="v4l2_m2m vp8_v4l2_m2m"
3126 vp8_v4l2m2m_encoder_deps="v4l2_m2m vp8_v4l2_m2m"
3127 vp9_cuvid_decoder_deps="cuvid"
3128 vp9_mediacodec_decoder_deps="mediacodec"
3129 vp9_qsv_decoder_select="qsvdec"
3130 vp9_rkmpp_decoder_deps="rkmpp"
3131 vp9_vaapi_encoder_deps="VAEncPictureParameterBufferVP9"
3132 vp9_vaapi_encoder_select="vaapi_encode"
3133 vp9_qsv_encoder_deps="libmfx MFX_CODEC_VP9"
3134 vp9_qsv_encoder_select="qsvenc"
3135 vp9_v4l2m2m_decoder_deps="v4l2_m2m vp9_v4l2_m2m"
3136 wmv3_crystalhd_decoder_select="crystalhd"
3137
3138 # parsers
3139 aac_parser_select="adts_header"
3140 av1_parser_select="cbs_av1"
3141 h264_parser_select="golomb h264dsp h264parse"
3142 hevc_parser_select="hevcparse"
3143 mpegaudio_parser_select="mpegaudioheader"
3144 mpegvideo_parser_select="mpegvideo"
3145 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
3146 vc1_parser_select="vc1dsp"
3147
3148 # bitstream_filters
3149 aac_adtstoasc_bsf_select="adts_header"
3150 av1_frame_merge_bsf_select="cbs_av1"
3151 av1_frame_split_bsf_select="cbs_av1"
3152 av1_metadata_bsf_select="cbs_av1"
3153 eac3_core_bsf_select="ac3_parser"
3154 filter_units_bsf_select="cbs"
3155 h264_metadata_bsf_deps="const_nan"
3156 h264_metadata_bsf_select="cbs_h264"
3157 h264_redundant_pps_bsf_select="cbs_h264"
3158 hevc_metadata_bsf_select="cbs_h265"
3159 mjpeg2jpeg_bsf_select="jpegtables"
3160 mpeg2_metadata_bsf_select="cbs_mpeg2"
3161 trace_headers_bsf_select="cbs"
3162 vp9_metadata_bsf_select="cbs_vp9"
3163
3164 # external libraries
3165 aac_at_decoder_deps="audiotoolbox"
3166 aac_at_decoder_select="aac_adtstoasc_bsf"
3167 ac3_at_decoder_deps="audiotoolbox"
3168 ac3_at_decoder_select="ac3_parser"
3169 adpcm_ima_qt_at_decoder_deps="audiotoolbox"
3170 alac_at_decoder_deps="audiotoolbox"
3171 amr_nb_at_decoder_deps="audiotoolbox"
3172 avisynth_deps_any="libdl LoadLibrary"
3173 avisynth_demuxer_deps="avisynth"
3174 avisynth_demuxer_select="riffdec"
3175 eac3_at_decoder_deps="audiotoolbox"
3176 eac3_at_decoder_select="ac3_parser"
3177 gsm_ms_at_decoder_deps="audiotoolbox"
3178 ilbc_at_decoder_deps="audiotoolbox"
3179 mp1_at_decoder_deps="audiotoolbox"
3180 mp2_at_decoder_deps="audiotoolbox"
3181 mp3_at_decoder_deps="audiotoolbox"
3182 mp1_at_decoder_select="mpegaudioheader"
3183 mp2_at_decoder_select="mpegaudioheader"
3184 mp3_at_decoder_select="mpegaudioheader"
3185 pcm_alaw_at_decoder_deps="audiotoolbox"
3186 pcm_mulaw_at_decoder_deps="audiotoolbox"
3187 qdmc_decoder_select="fft"
3188 qdmc_at_decoder_deps="audiotoolbox"
3189 qdm2_at_decoder_deps="audiotoolbox"
3190 aac_at_encoder_deps="audiotoolbox"
3191 aac_at_encoder_select="audio_frame_queue"
3192 alac_at_encoder_deps="audiotoolbox"
3193 alac_at_encoder_select="audio_frame_queue"
3194 ilbc_at_encoder_deps="audiotoolbox"
3195 ilbc_at_encoder_select="audio_frame_queue"
3196 pcm_alaw_at_encoder_deps="audiotoolbox"
3197 pcm_alaw_at_encoder_select="audio_frame_queue"
3198 pcm_mulaw_at_encoder_deps="audiotoolbox"
3199 pcm_mulaw_at_encoder_select="audio_frame_queue"
3200 chromaprint_muxer_deps="chromaprint"
3201 h264_videotoolbox_encoder_deps="pthreads"
3202 h264_videotoolbox_encoder_select="videotoolbox_encoder"
3203 hevc_videotoolbox_encoder_deps="pthreads"
3204 hevc_videotoolbox_encoder_select="videotoolbox_encoder"
3205 libaom_av1_decoder_deps="libaom"
3206 libaom_av1_encoder_deps="libaom"
3207 libaom_av1_encoder_select="extract_extradata_bsf"
3208 libaribb24_decoder_deps="libaribb24"
3209 libcelt_decoder_deps="libcelt"
3210 libcodec2_decoder_deps="libcodec2"
3211 libcodec2_encoder_deps="libcodec2"
3212 libdav1d_decoder_deps="libdav1d"
3213 libdavs2_decoder_deps="libdavs2"
3214 libfdk_aac_decoder_deps="libfdk_aac"
3215 libfdk_aac_encoder_deps="libfdk_aac"
3216 libfdk_aac_encoder_select="audio_frame_queue"
3217 libgme_demuxer_deps="libgme"
3218 libgsm_decoder_deps="libgsm"
3219 libgsm_encoder_deps="libgsm"
3220 libgsm_ms_decoder_deps="libgsm"
3221 libgsm_ms_encoder_deps="libgsm"
3222 libilbc_decoder_deps="libilbc"
3223 libilbc_encoder_deps="libilbc"
3224 libkvazaar_encoder_deps="libkvazaar"
3225 libmodplug_demuxer_deps="libmodplug"
3226 libmp3lame_encoder_deps="libmp3lame"
3227 libmp3lame_encoder_select="audio_frame_queue mpegaudioheader"
3228 libopencore_amrnb_decoder_deps="libopencore_amrnb"
3229 libopencore_amrnb_encoder_deps="libopencore_amrnb"
3230 libopencore_amrnb_encoder_select="audio_frame_queue"
3231 libopencore_amrwb_decoder_deps="libopencore_amrwb"
3232 libopenh264_decoder_deps="libopenh264"
3233 libopenh264_decoder_select="h264_mp4toannexb_bsf"
3234 libopenh264_encoder_deps="libopenh264"
3235 libopenjpeg_decoder_deps="libopenjpeg"
3236 libopenjpeg_encoder_deps="libopenjpeg"
3237 libopenmpt_demuxer_deps="libopenmpt"
3238 libopus_decoder_deps="libopus"
3239 libopus_encoder_deps="libopus"
3240 libopus_encoder_select="audio_frame_queue"
3241 librav1e_encoder_deps="librav1e"
3242 librav1e_encoder_select="extract_extradata_bsf"
3243 librsvg_decoder_deps="librsvg"
3244 libshine_encoder_deps="libshine"
3245 libshine_encoder_select="audio_frame_queue"
3246 libspeex_decoder_deps="libspeex"
3247 libspeex_encoder_deps="libspeex"
3248 libspeex_encoder_select="audio_frame_queue"
3249 libsvtav1_encoder_deps="libsvtav1"
3250 libtheora_encoder_deps="libtheora"
3251 libtwolame_encoder_deps="libtwolame"
3252 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
3253 libvorbis_decoder_deps="libvorbis"
3254 libvorbis_encoder_deps="libvorbis libvorbisenc"
3255 libvorbis_encoder_select="audio_frame_queue"
3256 libvpx_vp8_decoder_deps="libvpx"
3257 libvpx_vp8_encoder_deps="libvpx"
3258 libvpx_vp9_decoder_deps="libvpx"
3259 libvpx_vp9_encoder_deps="libvpx"
3260 libwavpack_encoder_deps="libwavpack"
3261 libwavpack_encoder_select="audio_frame_queue"
3262 libwebp_encoder_deps="libwebp"
3263 libwebp_anim_encoder_deps="libwebp"
3264 libx262_encoder_deps="libx262"
3265 libx264_encoder_deps="libx264"
3266 libx264rgb_encoder_deps="libx264 x264_csp_bgr"
3267 libx264rgb_encoder_select="libx264_encoder"
3268 libx265_encoder_deps="libx265"
3269 libxavs_encoder_deps="libxavs"
3270 libxavs2_encoder_deps="libxavs2"
3271 libxvid_encoder_deps="libxvid"
3272 libzvbi_teletext_decoder_deps="libzvbi"
3273 vapoursynth_demuxer_deps="vapoursynth"
3274 videotoolbox_suggest="coreservices"
3275 videotoolbox_deps="corefoundation coremedia corevideo"
3276 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
3277
3278 # demuxers / muxers
3279 ac3_demuxer_select="ac3_parser"
3280 act_demuxer_select="riffdec"
3281 aiff_muxer_select="iso_media"
3282 asf_demuxer_select="riffdec"
3283 asf_o_demuxer_select="riffdec"
3284 asf_muxer_select="riffenc"
3285 asf_stream_muxer_select="asf_muxer"
3286 av1_demuxer_select="av1_frame_merge_bsf av1_parser"
3287 avi_demuxer_select="iso_media riffdec exif"
3288 avi_muxer_select="riffenc"
3289 caf_demuxer_select="iso_media riffdec"
3290 caf_muxer_select="iso_media"
3291 dash_muxer_select="mp4_muxer"
3292 dash_demuxer_deps="libxml2"
3293 dirac_demuxer_select="dirac_parser"
3294 dts_demuxer_select="dca_parser"
3295 dtshd_demuxer_select="dca_parser"
3296 dv_demuxer_select="dvprofile"
3297 dv_muxer_select="dvprofile"
3298 dxa_demuxer_select="riffdec"
3299 eac3_demuxer_select="ac3_parser"
3300 f4v_muxer_select="mov_muxer"
3301 fifo_muxer_deps="threads"
3302 flac_demuxer_select="flac_parser"
3303 flv_muxer_select="aac_adtstoasc_bsf"
3304 gxf_muxer_select="pcm_rechunk_bsf"
3305 hds_muxer_select="flv_muxer"
3306 hls_muxer_select="mpegts_muxer"
3307 hls_muxer_suggest="gcrypt openssl"
3308 image2_alias_pix_demuxer_select="image2_demuxer"
3309 image2_brender_pix_demuxer_select="image2_demuxer"
3310 ipod_muxer_select="mov_muxer"
3311 ismv_muxer_select="mov_muxer"
3312 ivf_muxer_select="av1_metadata_bsf vp9_superframe_bsf"
3313 latm_muxer_select="aac_adtstoasc_bsf"
3314 matroska_audio_muxer_select="matroska_muxer"
3315 matroska_demuxer_select="iso_media riffdec"
3316 matroska_demuxer_suggest="bzlib lzo zlib"
3317 matroska_muxer_select="iso_media riffenc vp9_superframe_bsf aac_adtstoasc_bsf"
3318 mlp_demuxer_select="mlp_parser"
3319 mmf_muxer_select="riffenc"
3320 mov_demuxer_select="iso_media riffdec"
3321 mov_demuxer_suggest="zlib"
3322 mov_muxer_select="iso_media riffenc rtpenc_chain vp9_superframe_bsf aac_adtstoasc_bsf"
3323 mp3_demuxer_select="mpegaudio_parser"
3324 mp3_muxer_select="mpegaudioheader"
3325 mp4_muxer_select="mov_muxer"
3326 mpegts_demuxer_select="iso_media"
3327 mpegts_muxer_select="adts_muxer latm_muxer h264_mp4toannexb_bsf hevc_mp4toannexb_bsf"
3328 mpegtsraw_demuxer_select="mpegts_demuxer"
3329 mxf_muxer_select="golomb pcm_rechunk_bsf"
3330 mxf_d10_muxer_select="mxf_muxer"
3331 mxf_opatom_muxer_select="mxf_muxer"
3332 nut_muxer_select="riffenc"
3333 nuv_demuxer_select="riffdec"
3334 obu_demuxer_select="av1_frame_merge_bsf av1_parser"
3335 oga_muxer_select="ogg_muxer"
3336 ogg_demuxer_select="dirac_parse"
3337 ogv_muxer_select="ogg_muxer"
3338 opus_muxer_select="ogg_muxer"
3339 psp_muxer_select="mov_muxer"
3340 rtp_demuxer_select="sdp_demuxer"
3341 rtp_muxer_select="golomb jpegtables"
3342 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
3343 rtsp_demuxer_select="http_protocol rtpdec"
3344 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
3345 sap_demuxer_select="sdp_demuxer"
3346 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
3347 sdp_demuxer_select="rtpdec"
3348 smoothstreaming_muxer_select="ismv_muxer"
3349 spdif_demuxer_select="adts_header"
3350 spdif_muxer_select="adts_header"
3351 spx_muxer_select="ogg_muxer"
3352 swf_demuxer_suggest="zlib"
3353 tak_demuxer_select="tak_parser"
3354 truehd_demuxer_select="mlp_parser"
3355 tg2_muxer_select="mov_muxer"
3356 tgp_muxer_select="mov_muxer"
3357 vobsub_demuxer_select="mpegps_demuxer"
3358 w64_demuxer_select="wav_demuxer"
3359 w64_muxer_select="wav_muxer"
3360 wav_demuxer_select="riffdec"
3361 wav_muxer_select="riffenc"
3362 webm_chunk_muxer_select="webm_muxer"
3363 webm_muxer_select="iso_media riffenc"
3364 webm_dash_manifest_demuxer_select="matroska_demuxer"
3365 wtv_demuxer_select="mpegts_demuxer riffdec"
3366 wtv_muxer_select="mpegts_muxer riffenc"
3367 xmv_demuxer_select="riffdec"
3368 xwma_demuxer_select="riffdec"
3369
3370 # indevs / outdevs
3371 android_camera_indev_deps="android camera2ndk mediandk pthreads"
3372 android_camera_indev_extralibs="-landroid -lcamera2ndk -lmediandk"
3373 alsa_indev_deps="alsa"
3374 alsa_outdev_deps="alsa"
3375 avfoundation_indev_deps="avfoundation corevideo coremedia pthreads"
3376 avfoundation_indev_suggest="coregraphics applicationservices"
3377 avfoundation_indev_extralibs="-framework Foundation"
3378 audiotoolbox_outdev_deps="audiotoolbox pthreads"
3379 audiotoolbox_outdev_extralibs="-framework AudioToolbox -framework CoreAudio"
3380 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
3381 caca_outdev_deps="libcaca"
3382 decklink_deps_any="libdl LoadLibrary"
3383 decklink_indev_deps="decklink threads"
3384 decklink_indev_extralibs="-lstdc++"
3385 decklink_outdev_deps="decklink threads"
3386 decklink_outdev_suggest="libklvanc"
3387 decklink_outdev_extralibs="-lstdc++"
3388 dshow_indev_deps="IBaseFilter"
3389 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
3390 fbdev_indev_deps="linux_fb_h"
3391 fbdev_outdev_deps="linux_fb_h"
3392 gdigrab_indev_deps="CreateDIBSection"
3393 gdigrab_indev_extralibs="-lgdi32"
3394 gdigrab_indev_select="bmp_decoder"
3395 iec61883_indev_deps="libiec61883"
3396 jack_indev_deps="libjack"
3397 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
3398 kmsgrab_indev_deps="libdrm"
3399 lavfi_indev_deps="avfilter"
3400 libcdio_indev_deps="libcdio"
3401 libdc1394_indev_deps="libdc1394"
3402 openal_indev_deps="openal"
3403 opengl_outdev_deps="opengl"
3404 opengl_outdev_suggest="sdl2"
3405 oss_indev_deps_any="sys_soundcard_h"
3406 oss_outdev_deps_any="sys_soundcard_h"
3407 pulse_indev_deps="libpulse"
3408 pulse_outdev_deps="libpulse"
3409 sdl2_outdev_deps="sdl2"
3410 sndio_indev_deps="sndio"
3411 sndio_outdev_deps="sndio"
3412 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
3413 v4l2_indev_suggest="libv4l2"
3414 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
3415 v4l2_outdev_suggest="libv4l2"
3416 vfwcap_indev_deps="vfw32 vfwcap_defines"
3417 xcbgrab_indev_deps="libxcb"
3418 xcbgrab_indev_suggest="libxcb_shm libxcb_shape libxcb_xfixes"
3419 xv_outdev_deps="xlib"
3420
3421 # protocols
3422 async_protocol_deps="threads"
3423 bluray_protocol_deps="libbluray"
3424 ffrtmpcrypt_protocol_conflict="librtmp_protocol"
3425 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl mbedtls"
3426 ffrtmpcrypt_protocol_select="tcp_protocol"
3427 ffrtmphttp_protocol_conflict="librtmp_protocol"
3428 ffrtmphttp_protocol_select="http_protocol"
3429 ftp_protocol_select="tcp_protocol"
3430 gopher_protocol_select="network"
3431 http_protocol_select="tcp_protocol"
3432 http_protocol_suggest="zlib"
3433 httpproxy_protocol_select="tcp_protocol"
3434 httpproxy_protocol_suggest="zlib"
3435 https_protocol_select="tls_protocol"
3436 https_protocol_suggest="zlib"
3437 icecast_protocol_select="http_protocol"
3438 mmsh_protocol_select="http_protocol"
3439 mmst_protocol_select="network"
3440 rtmp_protocol_conflict="librtmp_protocol"
3441 rtmp_protocol_select="tcp_protocol"
3442 rtmp_protocol_suggest="zlib"
3443 rtmpe_protocol_select="ffrtmpcrypt_protocol"
3444 rtmpe_protocol_suggest="zlib"
3445 rtmps_protocol_conflict="librtmp_protocol"
3446 rtmps_protocol_select="tls_protocol"
3447 rtmps_protocol_suggest="zlib"
3448 rtmpt_protocol_select="ffrtmphttp_protocol"
3449 rtmpt_protocol_suggest="zlib"
3450 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
3451 rtmpte_protocol_suggest="zlib"
3452 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
3453 rtmpts_protocol_suggest="zlib"
3454 rtp_protocol_select="udp_protocol"
3455 schannel_conflict="openssl gnutls libtls mbedtls"
3456 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
3457 sctp_protocol_select="network"
3458 securetransport_conflict="openssl gnutls libtls mbedtls"
3459 srtp_protocol_select="rtp_protocol srtp"
3460 tcp_protocol_select="network"
3461 tls_protocol_deps_any="gnutls openssl schannel securetransport libtls mbedtls"
3462 tls_protocol_select="tcp_protocol"
3463 udp_protocol_select="network"
3464 udplite_protocol_select="network"
3465 unix_protocol_deps="sys_un_h"
3466 unix_protocol_select="network"
3467
3468 # external library protocols
3469 libamqp_protocol_deps="librabbitmq"
3470 libamqp_protocol_select="network"
3471 librtmp_protocol_deps="librtmp"
3472 librtmpe_protocol_deps="librtmp"
3473 librtmps_protocol_deps="librtmp"
3474 librtmpt_protocol_deps="librtmp"
3475 librtmpte_protocol_deps="librtmp"
3476 libsmbclient_protocol_deps="libsmbclient gplv3"
3477 libsrt_protocol_deps="libsrt"
3478 libsrt_protocol_select="network"
3479 libssh_protocol_deps="libssh"
3480 libtls_conflict="openssl gnutls mbedtls"
3481 libzmq_protocol_deps="libzmq"
3482 libzmq_protocol_select="network"
3483
3484 # filters
3485 afftdn_filter_deps="avcodec"
3486 afftdn_filter_select="fft"
3487 afftfilt_filter_deps="avcodec"
3488 afftfilt_filter_select="fft"
3489 afir_filter_deps="avcodec"
3490 afir_filter_select="rdft"
3491 amovie_filter_deps="avcodec avformat"
3492 aresample_filter_deps="swresample"
3493 asr_filter_deps="pocketsphinx"
3494 ass_filter_deps="libass"
3495 atempo_filter_deps="avcodec"
3496 atempo_filter_select="rdft"
3497 avgblur_opencl_filter_deps="opencl"
3498 avgblur_vulkan_filter_deps="vulkan libglslang"
3499 azmq_filter_deps="libzmq"
3500 blackframe_filter_deps="gpl"
3501 bm3d_filter_deps="avcodec"
3502 bm3d_filter_select="dct"
3503 boxblur_filter_deps="gpl"
3504 boxblur_opencl_filter_deps="opencl gpl"
3505 bs2b_filter_deps="libbs2b"
3506 chromaber_vulkan_filter_deps="vulkan libglslang"
3507 colorkey_opencl_filter_deps="opencl"
3508 colormatrix_filter_deps="gpl"
3509 convolution_opencl_filter_deps="opencl"
3510 convolve_filter_deps="avcodec"
3511 convolve_filter_select="fft"
3512 coreimage_filter_deps="coreimage appkit"
3513 coreimage_filter_extralibs="-framework OpenGL"
3514 coreimagesrc_filter_deps="coreimage appkit"
3515 coreimagesrc_filter_extralibs="-framework OpenGL"
3516 cover_rect_filter_deps="avcodec avformat gpl"
3517 cropdetect_filter_deps="gpl"
3518 deconvolve_filter_deps="avcodec"
3519 deconvolve_filter_select="fft"
3520 deinterlace_qsv_filter_deps="libmfx"
3521 deinterlace_vaapi_filter_deps="vaapi"
3522 delogo_filter_deps="gpl"
3523 denoise_vaapi_filter_deps="vaapi"
3524 derain_filter_select="dnn"
3525 deshake_filter_select="pixelutils"
3526 deshake_opencl_filter_deps="opencl"
3527 dilation_opencl_filter_deps="opencl"
3528 dnn_processing_filter_deps="swscale"
3529 dnn_processing_filter_select="dnn"
3530 drawtext_filter_deps="libfreetype"
3531 drawtext_filter_suggest="libfontconfig libfribidi"
3532 elbg_filter_deps="avcodec"
3533 eq_filter_deps="gpl"
3534 erosion_opencl_filter_deps="opencl"
3535 fftfilt_filter_deps="avcodec"
3536 fftfilt_filter_select="rdft"
3537 fftdnoiz_filter_deps="avcodec"
3538 fftdnoiz_filter_select="fft"
3539 find_rect_filter_deps="avcodec avformat gpl"
3540 firequalizer_filter_deps="avcodec"
3541 firequalizer_filter_select="rdft"
3542 flite_filter_deps="libflite"
3543 framerate_filter_select="scene_sad"
3544 freezedetect_filter_select="scene_sad"
3545 frei0r_filter_deps="frei0r libdl"
3546 frei0r_src_filter_deps="frei0r libdl"
3547 fspp_filter_deps="gpl"
3548 headphone_filter_select="fft"
3549 histeq_filter_deps="gpl"
3550 hqdn3d_filter_deps="gpl"
3551 interlace_filter_deps="gpl"
3552 kerndeint_filter_deps="gpl"
3553 ladspa_filter_deps="ladspa libdl"
3554 lensfun_filter_deps="liblensfun version3"
3555 lv2_filter_deps="lv2"
3556 mcdeint_filter_deps="avcodec gpl"
3557 movie_filter_deps="avcodec avformat"
3558 mpdecimate_filter_deps="gpl"
3559 mpdecimate_filter_select="pixelutils"
3560 minterpolate_filter_select="scene_sad"
3561 mptestsrc_filter_deps="gpl"
3562 negate_filter_deps="lut_filter"
3563 nlmeans_opencl_filter_deps="opencl"
3564 nnedi_filter_deps="gpl"
3565 ocr_filter_deps="libtesseract"
3566 ocv_filter_deps="libopencv"
3567 openclsrc_filter_deps="opencl"
3568 overlay_opencl_filter_deps="opencl"
3569 overlay_qsv_filter_deps="libmfx"
3570 overlay_qsv_filter_select="qsvvpp"
3571 overlay_vulkan_filter_deps="vulkan libglslang"
3572 owdenoise_filter_deps="gpl"
3573 pad_opencl_filter_deps="opencl"
3574 pan_filter_deps="swresample"
3575 perspective_filter_deps="gpl"
3576 phase_filter_deps="gpl"
3577 pp7_filter_deps="gpl"
3578 pp_filter_deps="gpl postproc"
3579 prewitt_opencl_filter_deps="opencl"
3580 procamp_vaapi_filter_deps="vaapi"
3581 program_opencl_filter_deps="opencl"
3582 pullup_filter_deps="gpl"
3583 removelogo_filter_deps="avcodec avformat swscale"
3584 repeatfields_filter_deps="gpl"
3585 resample_filter_deps="avresample"
3586 roberts_opencl_filter_deps="opencl"
3587 rubberband_filter_deps="librubberband"
3588 sab_filter_deps="gpl swscale"
3589 scale2ref_filter_deps="swscale"
3590 scale_filter_deps="swscale"
3591 scale_qsv_filter_deps="libmfx"
3592 scdet_filter_select="scene_sad"
3593 select_filter_select="scene_sad"
3594 sharpness_vaapi_filter_deps="vaapi"
3595 showcqt_filter_deps="avcodec avformat swscale"
3596 showcqt_filter_suggest="libfontconfig libfreetype"
3597 showcqt_filter_select="fft"
3598 showfreqs_filter_deps="avcodec"
3599 showfreqs_filter_select="fft"
3600 showspatial_filter_select="fft"
3601 showspectrum_filter_deps="avcodec"
3602 showspectrum_filter_select="fft"
3603 showspectrumpic_filter_deps="avcodec"
3604 showspectrumpic_filter_select="fft"
3605 signature_filter_deps="gpl avcodec avformat"
3606 sinc_filter_select="rdft"
3607 smartblur_filter_deps="gpl swscale"
3608 sobel_opencl_filter_deps="opencl"
3609 sofalizer_filter_deps="libmysofa avcodec"
3610 sofalizer_filter_select="fft"
3611 spectrumsynth_filter_deps="avcodec"
3612 spectrumsynth_filter_select="fft"
3613 spp_filter_deps="gpl avcodec"
3614 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3615 sr_filter_deps="avformat swscale"
3616 sr_filter_select="dnn"
3617 stereo3d_filter_deps="gpl"
3618 subtitles_filter_deps="avformat avcodec libass"
3619 super2xsai_filter_deps="gpl"
3620 pixfmts_super2xsai_test_deps="super2xsai_filter"
3621 superequalizer_filter_select="rdft"
3622 surround_filter_select="rdft"
3623 tinterlace_filter_deps="gpl"
3624 tinterlace_merge_test_deps="tinterlace_filter"
3625 tinterlace_pad_test_deps="tinterlace_filter"
3626 tonemap_filter_deps="const_nan"
3627 tonemap_vaapi_filter_deps="vaapi VAProcFilterParameterBufferHDRToneMapping"
3628 tonemap_opencl_filter_deps="opencl const_nan"
3629 transpose_opencl_filter_deps="opencl"
3630 transpose_vaapi_filter_deps="vaapi VAProcPipelineCaps_rotation_flags"
3631 unsharp_opencl_filter_deps="opencl"
3632 uspp_filter_deps="gpl avcodec"
3633 vaguedenoiser_filter_deps="gpl"
3634 vidstabdetect_filter_deps="libvidstab"
3635 vidstabtransform_filter_deps="libvidstab"
3636 libvmaf_filter_deps="libvmaf pthreads"
3637 zmq_filter_deps="libzmq"
3638 zoompan_filter_deps="swscale"
3639 zscale_filter_deps="libzimg const_nan"
3640 scale_vaapi_filter_deps="vaapi"
3641 scale_vulkan_filter_deps="vulkan libglslang"
3642 vpp_qsv_filter_deps="libmfx"
3643 vpp_qsv_filter_select="qsvvpp"
3644 xfade_opencl_filter_deps="opencl"
3645 yadif_cuda_filter_deps="ffnvcodec"
3646 yadif_cuda_filter_deps_any="cuda_nvcc cuda_llvm"
3647
3648 # examples
3649 avio_list_dir_deps="avformat avutil"
3650 avio_reading_deps="avformat avcodec avutil"
3651 decode_audio_example_deps="avcodec avutil"
3652 decode_video_example_deps="avcodec avutil"
3653 demuxing_decoding_example_deps="avcodec avformat avutil"
3654 encode_audio_example_deps="avcodec avutil"
3655 encode_video_example_deps="avcodec avutil"
3656 extract_mvs_example_deps="avcodec avformat avutil"
3657 filter_audio_example_deps="avfilter avutil"
3658 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3659 filtering_video_example_deps="avfilter avcodec avformat avutil"
3660 http_multiclient_example_deps="avformat avutil fork"
3661 hw_decode_example_deps="avcodec avformat avutil"
3662 metadata_example_deps="avformat avutil"
3663 muxing_example_deps="avcodec avformat avutil swscale"
3664 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
3665 remuxing_example_deps="avcodec avformat avutil"
3666 resampling_audio_example_deps="avutil swresample"
3667 scaling_video_example_deps="avutil swscale"
3668 transcode_aac_example_deps="avcodec avformat swresample"
3669 transcoding_example_deps="avfilter avcodec avformat avutil"
3670 vaapi_encode_example_deps="avcodec avutil h264_vaapi_encoder"
3671 vaapi_transcode_example_deps="avcodec avformat avutil h264_vaapi_encoder"
3672
3673 # EXTRALIBS_LIST
3674 cpu_init_extralibs="pthreads_extralibs"
3675 cws2fws_extralibs="zlib_extralibs"
3676
3677 # libraries, in any order
3678 avcodec_deps="avutil"
3679 avcodec_suggest="libm"
3680 avcodec_select="null_bsf"
3681 avdevice_deps="avformat avcodec avutil"
3682 avdevice_suggest="libm"
3683 avfilter_deps="avutil"
3684 avfilter_suggest="libm"
3685 avformat_deps="avcodec avutil"
3686 avformat_suggest="libm network zlib"
3687 avresample_deps="avutil"
3688 avresample_suggest="libm"
3689 avutil_suggest="clock_gettime ffnvcodec libm libdrm libmfx opencl user32 vaapi vulkan videotoolbox corefoundation corevideo coremedia bcrypt"
3690 postproc_deps="avutil gpl"
3691 postproc_suggest="libm"
3692 swresample_deps="avutil"
3693 swresample_suggest="libm libsoxr"
3694 swscale_deps="avutil"
3695 swscale_suggest="libm"
3696
3697 avcodec_extralibs="pthreads_extralibs iconv_extralibs dxva2_extralibs"
3698 avfilter_extralibs="pthreads_extralibs"
3699 avutil_extralibs="d3d11va_extralibs nanosleep_extralibs pthreads_extralibs vaapi_drm_extralibs vaapi_x11_extralibs vdpau_x11_extralibs"
3700
3701 # programs
3702 ffmpeg_deps="avcodec avfilter avformat"
3703 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3704                hflip_filter null_filter
3705                transpose_filter trim_filter vflip_filter"
3706 ffmpeg_suggest="ole32 psapi shell32"
3707 ffplay_deps="avcodec avformat swscale swresample sdl2"
3708 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3709 ffplay_suggest="shell32"
3710 ffprobe_deps="avcodec avformat"
3711 ffprobe_suggest="shell32"
3712
3713 # documentation
3714 podpages_deps="perl"
3715 manpages_deps="perl pod2man"
3716 htmlpages_deps="perl"
3717 htmlpages_deps_any="makeinfo_html texi2html"
3718 txtpages_deps="perl makeinfo"
3719 doc_deps_any="manpages htmlpages podpages txtpages"
3720
3721 # default parameters
3722
3723 logfile="ffbuild/config.log"
3724
3725 # installation paths
3726 prefix_default="/usr/local"
3727 bindir_default='${prefix}/bin'
3728 datadir_default='${prefix}/share/ffmpeg'
3729 docdir_default='${prefix}/share/doc/ffmpeg'
3730 incdir_default='${prefix}/include'
3731 libdir_default='${prefix}/lib'
3732 mandir_default='${prefix}/share/man'
3733
3734 # toolchain
3735 ar_default="ar"
3736 cc_default="gcc"
3737 cxx_default="g++"
3738 host_cc_default="gcc"
3739 doxygen_default="doxygen"
3740 install="install"
3741 ln_s_default="ln -s -f"
3742 nm_default="nm -g"
3743 pkg_config_default=pkg-config
3744 ranlib_default="ranlib"
3745 strip_default="strip"
3746 version_script='--version-script'
3747 objformat="elf32"
3748 x86asmexe_default="nasm"
3749 windres_default="windres"
3750 striptype="direct"
3751
3752 # OS
3753 target_os_default=$(tolower $(uname -s))
3754 host_os=$target_os_default
3755
3756 # machine
3757 if test "$target_os_default" = aix; then
3758     arch_default=$(uname -p)
3759     strip_default="strip -X32_64"
3760     nm_default="nm -g -X32_64"
3761 else
3762     arch_default=$(uname -m)
3763 fi
3764 cpu="generic"
3765 intrinsics="none"
3766
3767 # configurable options
3768 enable $PROGRAM_LIST
3769 enable $DOCUMENT_LIST
3770 enable $EXAMPLE_LIST
3771 enable $(filter_out avresample $LIBRARY_LIST)
3772 enable stripping
3773
3774 enable asm
3775 enable debug
3776 enable doc
3777 enable faan faandct faanidct
3778 enable large_tests
3779 enable optimizations
3780 enable runtime_cpudetect
3781 enable safe_bitstream_reader
3782 enable static
3783 enable swscale_alpha
3784 enable valgrind_backtrace
3785
3786 sws_max_filter_size_default=256
3787 set_default sws_max_filter_size
3788
3789 # internal components are enabled by default
3790 enable $EXTRALIBS_LIST
3791
3792 # Avoid external, non-system, libraries getting enabled by dependency resolution
3793 disable $EXTERNAL_LIBRARY_LIST $HWACCEL_LIBRARY_LIST
3794
3795 # build settings
3796 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3797 LIBPREF="lib"
3798 LIBSUF=".a"
3799 FULLNAME='$(NAME)$(BUILDSUF)'
3800 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3801 SLIBPREF="lib"
3802 SLIBSUF=".so"
3803 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3804 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3805 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3806 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3807 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3808 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3809 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
3810
3811 asflags_filter=echo
3812 cflags_filter=echo
3813 ldflags_filter=echo
3814
3815 AS_C='-c'
3816 AS_O='-o $@'
3817 CC_C='-c'
3818 CC_E='-E -o $@'
3819 CC_O='-o $@'
3820 CXX_C='-c'
3821 CXX_O='-o $@'
3822 OBJCC_C='-c'
3823 OBJCC_E='-E -o $@'
3824 OBJCC_O='-o $@'
3825 X86ASM_O='-o $@'
3826 LD_O='-o $@'
3827 LD_LIB='-l%'
3828 LD_PATH='-L'
3829 HOSTCC_C='-c'
3830 HOSTCC_E='-E -o $@'
3831 HOSTCC_O='-o $@'
3832 HOSTLD_O='-o $@'
3833 NVCC_C='-c'
3834 NVCC_O='-o $@'
3835
3836 host_extralibs='-lm'
3837 host_cflags_filter=echo
3838 host_ldflags_filter=echo
3839
3840 target_path='$(CURDIR)'
3841
3842 # since the object filename is not given with the -MM flag, the compiler
3843 # is only able to print the basename, and we must add the path ourselves
3844 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3845 DEPFLAGS='-MM'
3846
3847 mkdir -p ffbuild
3848
3849 # find source path
3850 if test -f configure; then
3851     source_path=.
3852 elif test -f src/configure; then
3853     source_path=src
3854 else
3855     source_path=$(cd $(dirname "$0"); pwd)
3856     case "$source_path" in
3857         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3858     esac
3859     test -e "$source_path/config.h" &&
3860         die "Out of tree builds are impossible with config.h in source dir."
3861 fi
3862
3863 for v in "$@"; do
3864     r=${v#*=}
3865     l=${v%"$r"}
3866     r=$(sh_quote "$r")
3867     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3868 done
3869
3870 find_things_extern(){
3871     thing=$1
3872     pattern=$2
3873     file=$source_path/$3
3874     out=${4:-$thing}
3875     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$out/p" "$file"
3876 }
3877
3878 find_filters_extern(){
3879     file=$source_path/$1
3880     sed -n 's/^extern AVFilter ff_[avfsinkrc]\{2,5\}_\([[:alnum:]_]\{1,\}\);/\1_filter/p' $file
3881 }
3882
3883 FILTER_LIST=$(find_filters_extern libavfilter/allfilters.c)
3884 OUTDEV_LIST=$(find_things_extern muxer AVOutputFormat libavdevice/alldevices.c outdev)
3885 INDEV_LIST=$(find_things_extern demuxer AVInputFormat libavdevice/alldevices.c indev)
3886 MUXER_LIST=$(find_things_extern muxer AVOutputFormat libavformat/allformats.c)
3887 DEMUXER_LIST=$(find_things_extern demuxer AVInputFormat libavformat/allformats.c)
3888 ENCODER_LIST=$(find_things_extern encoder AVCodec libavcodec/allcodecs.c)
3889 DECODER_LIST=$(find_things_extern decoder AVCodec libavcodec/allcodecs.c)
3890 CODEC_LIST="
3891     $ENCODER_LIST
3892     $DECODER_LIST
3893 "
3894 PARSER_LIST=$(find_things_extern parser AVCodecParser libavcodec/parsers.c)
3895 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3896 HWACCEL_LIST=$(find_things_extern hwaccel AVHWAccel libavcodec/hwaccels.h)
3897 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3898
3899 AVCODEC_COMPONENTS_LIST="
3900     $BSF_LIST
3901     $DECODER_LIST
3902     $ENCODER_LIST
3903     $HWACCEL_LIST
3904     $PARSER_LIST
3905 "
3906
3907 AVDEVICE_COMPONENTS_LIST="
3908     $INDEV_LIST
3909     $OUTDEV_LIST
3910 "
3911
3912 AVFILTER_COMPONENTS_LIST="
3913     $FILTER_LIST
3914 "
3915
3916 AVFORMAT_COMPONENTS_LIST="
3917     $DEMUXER_LIST
3918     $MUXER_LIST
3919     $PROTOCOL_LIST
3920 "
3921
3922 ALL_COMPONENTS="
3923     $AVCODEC_COMPONENTS_LIST
3924     $AVDEVICE_COMPONENTS_LIST
3925     $AVFILTER_COMPONENTS_LIST
3926     $AVFORMAT_COMPONENTS_LIST
3927 "
3928
3929 for n in $COMPONENT_LIST; do
3930     v=$(toupper ${n%s})_LIST
3931     eval enable \$$v
3932     eval ${n}_if_any="\$$v"
3933 done
3934
3935 enable $ARCH_EXT_LIST
3936
3937 die_unknown(){
3938     echo "Unknown option \"$1\"."
3939     echo "See $0 --help for available options."
3940     exit 1
3941 }
3942
3943 print_in_columns() {
3944     tr ' ' '\n' | sort | tr '\r\n' '  ' | awk -v col_width=24 -v width="$ncols" '
3945     {
3946         num_cols = width > col_width ? int(width / col_width) : 1;
3947         num_rows = int((NF + num_cols-1) / num_cols);
3948         y = x = 1;
3949         for (y = 1; y <= num_rows; y++) {
3950             i = y;
3951             for (x = 1; x <= num_cols; x++) {
3952                 if (i <= NF) {
3953                   line = sprintf("%s%-" col_width "s", line, $i);
3954                 }
3955                 i = i + num_rows;
3956             }
3957             print line; line = "";
3958         }
3959     }' | sed 's/ *$//'
3960 }
3961
3962 show_list() {
3963     suffix=_$1
3964     shift
3965     echo $* | sed s/$suffix//g | print_in_columns
3966     exit 0
3967 }
3968
3969 rand_list(){
3970     IFS=', '
3971     set -- $*
3972     unset IFS
3973     for thing; do
3974         comp=${thing%:*}
3975         prob=${thing#$comp}
3976         prob=${prob#:}
3977         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3978         echo "prob ${prob:-0.5}"
3979         printf '%s\n' $comp
3980     done
3981 }
3982
3983 do_random(){
3984     action=$1
3985     shift
3986     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3987     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3988 }
3989
3990 for opt do
3991     optval="${opt#*=}"
3992     case "$opt" in
3993         --extra-ldflags=*)
3994             add_ldflags $optval
3995         ;;
3996         --extra-ldexeflags=*)
3997             add_ldexeflags $optval
3998         ;;
3999         --extra-ldsoflags=*)
4000             add_ldsoflags $optval
4001         ;;
4002         --extra-ldlibflags=*)
4003             warn "The --extra-ldlibflags option is only provided for compatibility and will be\n"\
4004                  "removed in the future. Use --extra-ldsoflags instead."
4005             add_ldsoflags $optval
4006         ;;
4007         --extra-libs=*)
4008             add_extralibs $optval
4009         ;;
4010         --disable-devices)
4011             disable $INDEV_LIST $OUTDEV_LIST
4012         ;;
4013         --enable-debug=*)
4014             debuglevel="$optval"
4015         ;;
4016         --disable-programs)
4017             disable $PROGRAM_LIST
4018         ;;
4019         --disable-everything)
4020             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
4021         ;;
4022         --disable-all)
4023             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
4024             disable $LIBRARY_LIST $PROGRAM_LIST doc
4025             enable avutil
4026         ;;
4027         --enable-random|--disable-random)
4028             action=${opt%%-random}
4029             do_random ${action#--} $COMPONENT_LIST
4030         ;;
4031         --enable-random=*|--disable-random=*)
4032             action=${opt%%-random=*}
4033             do_random ${action#--} $optval
4034         ;;
4035         --enable-sdl)
4036             enable sdl2
4037         ;;
4038         --enable-*=*|--disable-*=*)
4039             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
4040             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
4041             eval list=\$$(toupper $thing)_LIST
4042             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
4043             list=$(filter "$name" $list)
4044             [ "$list" = "" ] && warn "Option $opt did not match anything"
4045             test $action = enable && warn_if_gets_disabled $list
4046             $action $list
4047         ;;
4048         --enable-yasm|--disable-yasm)
4049             warn "The ${opt} option is only provided for compatibility and will be\n"\
4050                  "removed in the future. Use --enable-x86asm / --disable-x86asm instead."
4051             test $opt = --enable-yasm && x86asm=yes || x86asm=no
4052         ;;
4053         --yasmexe=*)
4054             warn "The --yasmexe option is only provided for compatibility and will be\n"\
4055                  "removed in the future. Use --x86asmexe instead."
4056             x86asmexe="$optval"
4057         ;;
4058         --enable-?*|--disable-?*)
4059             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
4060             if is_in $option $COMPONENT_LIST; then
4061                 test $action = disable && action=unset
4062                 eval $action \$$(toupper ${option%s})_LIST
4063             elif is_in $option $CMDLINE_SELECT; then
4064                 $action $option
4065             else
4066                 die_unknown $opt
4067             fi
4068         ;;
4069         --list-*)
4070             NAME="${opt#--list-}"
4071             is_in $NAME $COMPONENT_LIST || die_unknown $opt
4072             NAME=${NAME%s}
4073             eval show_list $NAME \$$(toupper $NAME)_LIST
4074         ;;
4075         --help|-h) show_help
4076         ;;
4077         --quiet|-q) quiet=yes
4078         ;;
4079         --fatal-warnings) enable fatal_warnings
4080         ;;
4081         --libfuzzer=*)
4082             libfuzzer_path="$optval"
4083         ;;
4084         *)
4085             optname="${opt%%=*}"
4086             optname="${optname#--}"
4087             optname=$(echo "$optname" | sed 's/-/_/g')
4088             if is_in $optname $CMDLINE_SET; then
4089                 eval $optname='$optval'
4090             elif is_in $optname $CMDLINE_APPEND; then
4091                 append $optname "$optval"
4092             else
4093                 die_unknown $opt
4094             fi
4095         ;;
4096     esac
4097 done
4098
4099 for e in $env; do
4100     eval "export $e"
4101 done
4102
4103 if disabled autodetect; then
4104
4105     # Unless iconv is explicitely disabled by the user, we still want to probe
4106     # for the iconv from the libc.
4107     disabled iconv || enable libc_iconv
4108
4109     disable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
4110     disable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
4111 fi
4112 # Mark specifically enabled, but normally autodetected libraries as requested.
4113 for lib in $AUTODETECT_LIBS; do
4114     enabled $lib && request $lib
4115 done
4116 #TODO: switch to $AUTODETECT_LIBS when $THREADS_LIST is supported the same way
4117 enable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
4118 enable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
4119
4120 disabled logging && logfile=/dev/null
4121
4122 # command line configuration sanity checks
4123
4124 # we need to build at least one lib type
4125 if ! enabled_any static shared; then
4126     cat <<EOF
4127 At least one library type must be built.
4128 Specify --enable-static to build the static libraries or --enable-shared to
4129 build the shared libraries as well. To only build the shared libraries specify
4130 --disable-static in addition to --enable-shared.
4131 EOF
4132     exit 1
4133 fi
4134
4135 die_license_disabled() {
4136     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
4137 }
4138
4139 die_license_disabled_gpl() {
4140     enabled $1 || { enabled $v && die "$v is incompatible with the gpl and --enable-$1 is not specified."; }
4141 }
4142
4143 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
4144 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
4145
4146 enabled gpl && map "die_license_disabled_gpl nonfree" $EXTERNAL_LIBRARY_NONFREE_LIST
4147 map "die_license_disabled nonfree" $HWACCEL_LIBRARY_NONFREE_LIST
4148
4149 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
4150
4151 if enabled nonfree; then
4152     license="nonfree and unredistributable"
4153 elif enabled gplv3; then
4154     license="GPL version 3 or later"
4155 elif enabled lgplv3; then
4156     license="LGPL version 3 or later"
4157 elif enabled gpl; then
4158     license="GPL version 2 or later"
4159 else
4160     license="LGPL version 2.1 or later"
4161 fi
4162
4163 enabled_all gnutls openssl &&
4164     die "GnuTLS and OpenSSL must not be enabled at the same time."
4165
4166 enabled_all gnutls mbedtls &&
4167     die "GnuTLS and mbedTLS must not be enabled at the same time."
4168
4169 enabled_all openssl mbedtls &&
4170     die "OpenSSL and mbedTLS must not be enabled at the same time."
4171
4172 # Disable all the library-specific components if the library itself
4173 # is disabled, see AVCODEC_LIST and following _LIST variables.
4174
4175 disable_components(){
4176     disabled ${1} && disable $(
4177         eval components="\$$(toupper ${1})_COMPONENTS"
4178         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
4179     )
4180 }
4181
4182 map 'disable_components $v' $LIBRARY_LIST
4183
4184 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
4185 set >> $logfile
4186
4187 test -n "$valgrind" && toolchain="valgrind-memcheck"
4188
4189 enabled ossfuzz && ! echo $CFLAGS | grep -q -- "-fsanitize="  && ! echo $CFLAGS | grep -q -- "-fcoverage-mapping" &&{
4190     add_cflags  -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp -fno-omit-frame-pointer
4191     add_ldflags -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp
4192 }
4193
4194 case "$toolchain" in
4195     *-asan)
4196         cc_default="${toolchain%-asan}"
4197         add_cflags  -fsanitize=address
4198         add_ldflags -fsanitize=address
4199     ;;
4200     *-msan)
4201         cc_default="${toolchain%-msan}"
4202         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
4203         add_ldflags -fsanitize=memory
4204     ;;
4205     *-tsan)
4206         cc_default="${toolchain%-tsan}"
4207         add_cflags  -fsanitize=thread
4208         add_ldflags -fsanitize=thread
4209         case "$toolchain" in
4210             gcc-tsan)
4211                 add_cflags  -fPIC
4212                 add_ldflags -fPIC
4213                 ;;
4214         esac
4215     ;;
4216     *-usan)
4217         cc_default="${toolchain%-usan}"
4218         add_cflags  -fsanitize=undefined
4219         add_ldflags -fsanitize=undefined
4220     ;;
4221     valgrind-*)
4222         target_exec_default="valgrind"
4223         case "$toolchain" in
4224             valgrind-massif)
4225                 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"
4226                 ;;
4227             valgrind-memcheck)
4228                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
4229                 ;;
4230         esac
4231     ;;
4232     msvc)
4233         # Check whether the current MSVC version needs the C99 converter.
4234         # From MSVC 2013 (compiler major version 18) onwards, it does actually
4235         # support enough of C99 to build ffmpeg. Default to the new
4236         # behaviour if the regexp was unable to match anything, since this
4237         # successfully parses the version number of existing supported
4238         # versions that require the converter (MSVC 2010 and 2012).
4239         cl_major_ver=$(cl.exe 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
4240         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
4241             cc_default="cl.exe"
4242             cxx_default="cl.exe"
4243         else
4244             die "Unsupported MSVC version (2013 or newer required)"
4245         fi
4246         ld_default="$source_path/compat/windows/mslink"
4247         nm_default="dumpbin.exe -symbols"
4248         ar_default="lib.exe"
4249         case "$arch" in
4250         aarch64|arm64)
4251             as_default="armasm64.exe"
4252             ;;
4253         arm*)
4254             as_default="armasm.exe"
4255             ;;
4256         esac
4257         target_os_default="win32"
4258         # Use a relative path for TMPDIR. This makes sure all the
4259         # ffconf temp files are written with a relative path, avoiding
4260         # issues with msys/win32 path conversion for MSVC parameters
4261         # such as -Fo<file> or -out:<file>.
4262         TMPDIR=.
4263     ;;
4264     icl)
4265         cc_default="icl"
4266         ld_default="xilink"
4267         nm_default="dumpbin -symbols"
4268         ar_default="xilib"
4269         target_os_default="win32"
4270         TMPDIR=.
4271     ;;
4272     gcov)
4273         add_cflags  -fprofile-arcs -ftest-coverage
4274         add_ldflags -fprofile-arcs -ftest-coverage
4275     ;;
4276     llvm-cov)
4277         add_cflags -fprofile-arcs -ftest-coverage
4278         add_ldflags --coverage
4279     ;;
4280     hardened)
4281         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
4282         add_cflags   -fno-strict-overflow -fstack-protector-all
4283         add_ldflags  -Wl,-z,relro -Wl,-z,now
4284         add_cflags   -fPIE
4285         add_ldexeflags -fPIE -pie
4286     ;;
4287     ?*)
4288         die "Unknown toolchain $toolchain"
4289     ;;
4290 esac
4291
4292 if test -n "$cross_prefix"; then
4293     test -n "$arch" && test -n "$target_os" ||
4294         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
4295     enable cross_compile
4296 fi
4297
4298 set_default target_os
4299 if test "$target_os" = android; then
4300     cc_default="clang"
4301 fi
4302
4303 ar_default="${cross_prefix}${ar_default}"
4304 cc_default="${cross_prefix}${cc_default}"
4305 cxx_default="${cross_prefix}${cxx_default}"
4306 nm_default="${cross_prefix}${nm_default}"
4307 pkg_config_default="${cross_prefix}${pkg_config_default}"
4308 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
4309     ranlib_default="${cross_prefix}${ranlib_default} -D"
4310 else
4311     ranlib_default="${cross_prefix}${ranlib_default}"
4312 fi
4313 strip_default="${cross_prefix}${strip_default}"
4314 windres_default="${cross_prefix}${windres_default}"
4315
4316 sysinclude_default="${sysroot}/usr/include"
4317
4318 if enabled cuda_sdk; then
4319     warn "Option --enable-cuda-sdk is deprecated. Use --enable-cuda-nvcc instead."
4320     enable cuda_nvcc
4321 fi
4322
4323 if enabled cuda_nvcc; then
4324     nvcc_default="nvcc"
4325     nvccflags_default="-gencode arch=compute_30,code=sm_30 -O2"
4326 else
4327     nvcc_default="clang"
4328     nvccflags_default="--cuda-gpu-arch=sm_30 -O2"
4329     NVCC_C=""
4330 fi
4331
4332 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
4333     target_exec x86asmexe nvcc
4334 enabled cross_compile || host_cc_default=$cc
4335 set_default host_cc
4336
4337 pkg_config_fail_message=""
4338 if ! $pkg_config --version >/dev/null 2>&1; then
4339     warn "$pkg_config not found, library detection may fail."
4340     pkg_config=false
4341 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
4342     pkg_config_fail_message="
4343 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
4344 fi
4345
4346 if test $doxygen != $doxygen_default && \
4347   ! $doxygen --version >/dev/null 2>&1; then
4348     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
4349 fi
4350
4351 exesuf() {
4352     case $1 in
4353         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
4354     esac
4355 }
4356
4357 EXESUF=$(exesuf $target_os)
4358 HOSTEXESUF=$(exesuf $host_os)
4359
4360 # set temporary file name
4361 : ${TMPDIR:=$TEMPDIR}
4362 : ${TMPDIR:=$TMP}
4363 : ${TMPDIR:=/tmp}
4364
4365 if [ -n "$tempprefix" ] ; then
4366     mktemp(){
4367         tmpname="$tempprefix.${HOSTNAME}.${UID}"
4368         echo "$tmpname"
4369         mkdir "$tmpname"
4370     }
4371 elif ! test_cmd mktemp -u XXXXXX; then
4372     # simple replacement for missing mktemp
4373     # NOT SAFE FOR GENERAL USE
4374     mktemp(){
4375         tmpname="${2%%XXX*}.${HOSTNAME}.${UID}.$$"
4376         echo "$tmpname"
4377         mkdir "$tmpname"
4378     }
4379 fi
4380
4381 FFTMPDIR=$(mktemp -d "${TMPDIR}/ffconf.XXXXXXXX" 2> /dev/null) ||
4382     die "Unable to create temporary directory in $TMPDIR."
4383
4384 tmpfile(){
4385     tmp="${FFTMPDIR}/test"$2
4386     (set -C; exec > $tmp) 2> /dev/null ||
4387         die "Unable to create temporary file in $FFTMPDIR."
4388     eval $1=$tmp
4389 }
4390
4391 trap 'rm -rf -- "$FFTMPDIR"' EXIT
4392 trap 'exit 2' INT
4393
4394 tmpfile TMPASM .asm
4395 tmpfile TMPC   .c
4396 tmpfile TMPCPP .cpp
4397 tmpfile TMPE   $EXESUF
4398 tmpfile TMPH   .h
4399 tmpfile TMPM   .m
4400 tmpfile TMPCU  .cu
4401 tmpfile TMPO   .o
4402 tmpfile TMPS   .S
4403 tmpfile TMPSH  .sh
4404 tmpfile TMPV   .ver
4405
4406 unset -f mktemp
4407
4408 chmod +x $TMPE
4409
4410 # make sure we can execute files in $TMPDIR
4411 cat > $TMPSH 2>> $logfile <<EOF
4412 #! /bin/sh
4413 EOF
4414 chmod +x $TMPSH >> $logfile 2>&1
4415 if ! $TMPSH >> $logfile 2>&1; then
4416     cat <<EOF
4417 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
4418 variable to another directory and make sure that it is not mounted noexec.
4419 EOF
4420     die "Sanity test failed."
4421 fi
4422
4423 armasm_flags(){
4424     for flag; do
4425         case $flag in
4426             # Filter out MSVC cl.exe options from cflags that shouldn't
4427             # be passed to gas-preprocessor
4428             -M[TD]*)                                            ;;
4429             *)                  echo $flag                      ;;
4430         esac
4431    done
4432 }
4433
4434 cparser_flags(){
4435     for flag; do
4436         case $flag in
4437             -Wno-switch)             echo -Wno-switch-enum ;;
4438             -Wno-format-zero-length) ;;
4439             -Wdisabled-optimization) ;;
4440             -Wno-pointer-sign)       echo -Wno-other ;;
4441             *)                       echo $flag ;;
4442         esac
4443     done
4444 }
4445
4446 msvc_common_flags(){
4447     for flag; do
4448         case $flag in
4449             # In addition to specifying certain flags under the compiler
4450             # specific filters, they must be specified here as well or else the
4451             # generic catch all at the bottom will print the original flag.
4452             -Wall)                ;;
4453             -Wextra)              ;;
4454             -std=c*)              ;;
4455             # Common flags
4456             -fomit-frame-pointer) ;;
4457             -g)                   echo -Z7 ;;
4458             -fno-math-errno)      ;;
4459             -fno-common)          ;;
4460             -fno-signed-zeros)    ;;
4461             -fPIC)                ;;
4462             -mthumb)              ;;
4463             -march=*)             ;;
4464             -lz)                  echo zlib.lib ;;
4465             -lx264)               echo libx264.lib ;;
4466             -lstdc++)             ;;
4467             -l*)                  echo ${flag#-l}.lib ;;
4468             -LARGEADDRESSAWARE)   echo $flag ;;
4469             -L*)                  echo -libpath:${flag#-L} ;;
4470             -Wl,*)                ;;
4471             *)                    echo $flag ;;
4472         esac
4473     done
4474 }
4475
4476 msvc_flags(){
4477     msvc_common_flags "$@"
4478     for flag; do
4479         case $flag in
4480             -Wall)                echo -W3 -wd4018 -wd4146 -wd4244 -wd4305     \
4481                                        -wd4554 ;;
4482             -Wextra)              echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
4483                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
4484                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
4485                                        -wd4307 \
4486                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
4487         esac
4488     done
4489 }
4490
4491 icl_flags(){
4492     msvc_common_flags "$@"
4493     for flag; do
4494         case $flag in
4495             # Despite what Intel's documentation says -Wall, which is supported
4496             # on Windows, does enable remarks so disable them here.
4497             -Wall)                echo $flag -Qdiag-disable:remark ;;
4498             -std=c99)             echo -Qstd=c99 ;;
4499             -flto)                echo -ipo ;;
4500         esac
4501     done
4502 }
4503
4504 icc_flags(){
4505     for flag; do
4506         case $flag in
4507             -flto)                echo -ipo ;;
4508             *)                    echo $flag ;;
4509         esac
4510     done
4511 }
4512
4513 suncc_flags(){
4514     for flag; do
4515         case $flag in
4516             -march=*|-mcpu=*)
4517                 case "${flag#*=}" in
4518                     native)                   echo -xtarget=native       ;;
4519                     v9|niagara)               echo -xarch=sparc          ;;
4520                     ultrasparc)               echo -xarch=sparcvis       ;;
4521                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
4522                     i586|pentium)             echo -xchip=pentium        ;;
4523                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
4524                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
4525                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
4526                     pentium4*)          echo -xtarget=pentium4           ;;
4527                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
4528                     *-sse3)             echo -xarch=sse3                 ;;
4529                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
4530                     bonnell)                   echo -xarch=ssse3         ;;
4531                     corei7|nehalem)            echo -xtarget=nehalem     ;;
4532                     westmere)                  echo -xtarget=westmere    ;;
4533                     silvermont)                echo -xarch=sse4_2        ;;
4534                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
4535                     core-avx*|ivybridge|haswell|broadwell|skylake*|knl)
4536                                                echo -xarch=avx           ;;
4537                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
4538                     btver1)                    echo -xarch=amdsse4a      ;;
4539                     btver2|bdver*|znver*)      echo -xarch=avx           ;;
4540                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
4541                     k8|opteron|athlon64|athlon-fx)
4542                                                echo -xarch=sse2a         ;;
4543                     athlon*)                   echo -xarch=pentium_proa  ;;
4544                 esac
4545                 ;;
4546             -std=c99)             echo -xc99              ;;
4547             -fomit-frame-pointer) echo -xregs=frameptr    ;;
4548             -fPIC)                echo -KPIC -xcode=pic32 ;;
4549             -W*,*)                echo $flag              ;;
4550             -f*-*|-W*|-mimpure-text)                      ;;
4551             -shared)              echo -G                 ;;
4552             *)                    echo $flag              ;;
4553         esac
4554     done
4555 }
4556
4557 probe_cc(){
4558     pfx=$1
4559     _cc=$2
4560     first=$3
4561
4562     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
4563     unset _ld_o _ldflags _ld_lib _ld_path
4564     unset _depflags _DEPCMD _DEPFLAGS
4565     _flags_filter=echo
4566
4567     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
4568         true # no-op to avoid reading stdin in following checks
4569     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
4570         _type=llvm_gcc
4571         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
4572         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
4573         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4574         _cflags_speed='-O3'
4575         _cflags_size='-Os'
4576     elif $_cc -v 2>&1 | grep -qi ^gcc; then
4577         _type=gcc
4578         gcc_version=$($_cc --version | head -n1)
4579         gcc_basever=$($_cc -dumpversion)
4580         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
4581         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
4582         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
4583         case $gcc_basever in
4584             2) ;;
4585             2.*) ;;
4586             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
4587         esac
4588         if [ "$first" = true ]; then
4589             case $gcc_basever in
4590                 4.2*)
4591                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
4592             esac
4593         fi
4594         _cflags_speed='-O3'
4595         _cflags_size='-Os'
4596     elif $_cc --version 2>/dev/null | grep -q ^icc; then
4597         _type=icc
4598         _ident=$($_cc --version | head -n1)
4599         _depflags='-MMD'
4600         _cflags_speed='-O3'
4601         _cflags_size='-Os'
4602         _cflags_noopt='-O1'
4603         _flags_filter=icc_flags
4604     elif $_cc -v 2>&1 | grep -q xlc; then
4605         _type=xlc
4606         _ident=$($_cc -qversion 2>/dev/null | head -n1)
4607         _cflags_speed='-O5'
4608         _cflags_size='-O5 -qcompact'
4609     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
4610         test -d "$sysroot" || die "No valid sysroot specified."
4611         _type=armcc
4612         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
4613         armcc_conf="$PWD/armcc.conf"
4614         $_cc --arm_linux_configure                 \
4615              --arm_linux_config_file="$armcc_conf" \
4616              --configure_sysroot="$sysroot"        \
4617              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
4618              die "Error creating armcc configuration file."
4619         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
4620         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
4621         as_default="${cross_prefix}gcc"
4622         _depflags='-MMD'
4623         _cflags_speed='-O3'
4624         _cflags_size='-Os'
4625     elif $_cc -v 2>&1 | grep -q clang && ! $_cc -? > /dev/null 2>&1; then
4626         _type=clang
4627         _ident=$($_cc --version 2>/dev/null | head -n1)
4628         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4629         _cflags_speed='-O3'
4630         _cflags_size='-Oz'
4631     elif $_cc -V 2>&1 | grep -q Sun; then
4632         _type=suncc
4633         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
4634         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
4635         _DEPFLAGS='-xM1 -xc99'
4636         _ldflags='-std=c99'
4637         _cflags_speed='-O5'
4638         _cflags_size='-O5 -xspace'
4639         _flags_filter=suncc_flags
4640     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
4641         _type=pathscale
4642         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4643         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4644         _cflags_speed='-O2'
4645         _cflags_size='-Os'
4646         _flags_filter='filter_out -Wdisabled-optimization'
4647     elif $_cc -v 2>&1 | grep -q Open64; then
4648         _type=open64
4649         _ident=$($_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|-Wtype-limits|-fno-signed-zeros'
4654     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
4655         _type=armasm
4656         _ident=$($_cc | head -n1)
4657         # 4509: "This form of conditional instruction is deprecated"
4658         _flags="-nologo -ignore 4509"
4659         _flags_filter=armasm_flags
4660     elif $_cc 2>&1 | grep -q Intel; then
4661         _type=icl
4662         _ident=$($_cc 2>&1 | head -n1)
4663         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
4664         # Not only is O3 broken on 13.x+ but it is slower on all previous
4665         # versions (tested) as well.
4666         _cflags_speed="-O2"
4667         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
4668         if $_cc 2>&1 | grep -q Linker; then
4669             _ld_o='-out:$@'
4670         else
4671             _ld_o='-Fe$@'
4672         fi
4673         _cc_o='-Fo$@'
4674         _cc_e='-P'
4675         _flags_filter=icl_flags
4676         _ld_lib='lib%.a'
4677         _ld_path='-libpath:'
4678         # -Qdiag-error to make icl error when seeing certain unknown arguments
4679         _flags='-nologo -Qdiag-error:4044,10157'
4680         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
4681         # with MSVC which enables it by default.
4682         _cflags='-Qms0 -Qvec- -Qsimd- -GS -fp:precise'
4683         disable stripping
4684     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
4685         # lld can emulate multiple different linkers; in ms link.exe mode,
4686         # the -? parameter gives the help output which contains an identifyable
4687         # string, while it gives an error in other modes.
4688         _type=lld-link
4689         # The link.exe mode doesn't have a switch for getting the version,
4690         # but we can force it back to gnu mode and get the version from there.
4691         _ident=$($_cc -flavor gnu --version 2>/dev/null)
4692         _ld_o='-out:$@'
4693         _flags_filter=msvc_flags
4694         _ld_lib='lib%.a'
4695         _ld_path='-libpath:'
4696     elif $_cc -nologo- 2>&1 | grep -q Microsoft || { $_cc -v 2>&1 | grep -q clang && $_cc -? > /dev/null 2>&1; }; then
4697         _type=msvc
4698         if $_cc -nologo- 2>&1 | grep -q Microsoft; then
4699             _ident=$($_cc 2>&1 | head -n1 | tr -d '\r')
4700         else
4701             _ident=$($_cc --version 2>/dev/null | head -n1 | tr -d '\r')
4702         fi
4703         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
4704         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
4705         _cflags_speed="-O2"
4706         _cflags_size="-O1"
4707         _cflags_noopt="-O1"
4708         if $_cc -nologo- 2>&1 | grep -q Linker; then
4709             _ld_o='-out:$@'
4710         else
4711             _ld_o='-Fe$@'
4712         fi
4713         _cc_o='-Fo$@'
4714         _cc_e='-P -Fi$@'
4715         _flags_filter=msvc_flags
4716         _ld_lib='lib%.a'
4717         _ld_path='-libpath:'
4718         _flags='-nologo'
4719         disable stripping
4720     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
4721         _type=cparser
4722         _ident=$($_cc --version | head -n1)
4723         _depflags='-MMD'
4724         _cflags_speed='-O4'
4725         _cflags_size='-O2'
4726         _flags_filter=cparser_flags
4727     fi
4728
4729     eval ${pfx}_type=\$_type
4730     eval ${pfx}_ident=\$_ident
4731 }
4732
4733 set_ccvars(){
4734     eval ${1}_C=\${_cc_c-\${${1}_C}}
4735     eval ${1}_E=\${_cc_e-\${${1}_E}}
4736     eval ${1}_O=\${_cc_o-\${${1}_O}}
4737
4738     if [ -n "$_depflags" ]; then
4739         eval ${1}_DEPFLAGS=\$_depflags
4740     else
4741         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
4742         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
4743         eval DEP${1}FLAGS=\$_flags
4744     fi
4745 }
4746
4747 probe_cc cc "$cc" "true"
4748 cflags_filter=$_flags_filter
4749 cflags_speed=$_cflags_speed
4750 cflags_size=$_cflags_size
4751 cflags_noopt=$_cflags_noopt
4752 add_cflags $_flags $_cflags
4753 cc_ldflags=$_ldflags
4754 set_ccvars CC
4755 set_ccvars CXX
4756
4757 probe_cc hostcc "$host_cc"
4758 host_cflags_filter=$_flags_filter
4759 host_cflags_speed=$_cflags_speed
4760 add_host_cflags  $_flags $_cflags
4761 set_ccvars HOSTCC
4762
4763 test -n "$cc_type" && enable $cc_type ||
4764     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4765
4766 : ${as_default:=$cc}
4767 : ${objcc_default:=$cc}
4768 : ${dep_cc_default:=$cc}
4769 : ${ld_default:=$cc}
4770 : ${host_ld_default:=$host_cc}
4771 set_default ar as objcc dep_cc ld ln_s host_ld windres
4772
4773 probe_cc as "$as"
4774 asflags_filter=$_flags_filter
4775 add_asflags $_flags $_cflags
4776 set_ccvars AS
4777
4778 probe_cc objcc "$objcc"
4779 objcflags_filter=$_flags_filter
4780 add_objcflags $_flags $_cflags
4781 set_ccvars OBJC
4782
4783 probe_cc ld "$ld"
4784 ldflags_filter=$_flags_filter
4785 add_ldflags $_flags $_ldflags
4786 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4787 LD_O=${_ld_o-$LD_O}
4788 LD_LIB=${_ld_lib-$LD_LIB}
4789 LD_PATH=${_ld_path-$LD_PATH}
4790
4791 probe_cc hostld "$host_ld"
4792 host_ldflags_filter=$_flags_filter
4793 add_host_ldflags $_flags $_ldflags
4794 HOSTLD_O=${_ld_o-$HOSTLD_O}
4795
4796 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4797     probe_cc depcc "$dep_cc"
4798     CCDEP=${_DEPCMD:-$DEPCMD}
4799     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4800     DEPCCFLAGS=$_flags
4801 fi
4802
4803 if $ar 2>&1 | grep -q Microsoft; then
4804     arflags="-nologo"
4805     ar_o='-out:$@'
4806 elif $ar 2>&1 | grep -q "\[D\] "; then
4807     arflags="rcD"
4808     ar_o='$@'
4809 else
4810     arflags="rc"
4811     ar_o='$@'
4812 fi
4813
4814 add_cflags $extra_cflags
4815 add_cxxflags $extra_cxxflags
4816 add_objcflags $extra_objcflags
4817 add_asflags $extra_cflags
4818
4819 if test -n "$sysroot"; then
4820     case "$cc_type" in
4821         gcc|llvm_gcc|clang)
4822             add_cppflags --sysroot="$sysroot"
4823             add_ldflags --sysroot="$sysroot"
4824         ;;
4825     esac
4826 fi
4827
4828 if test "$cpu" = host; then
4829     enabled cross_compile &&
4830         warn "--cpu=host makes no sense when cross-compiling."
4831
4832     case "$cc_type" in
4833         gcc|llvm_gcc)
4834             check_native(){
4835                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4836                 sed -n "/cc1.*$1=/{
4837                             s/.*$1=\\([^ ]*\\).*/\\1/
4838                             p
4839                             q
4840                         }" $TMPE
4841             }
4842             cpu=$(check_native -march || check_native -mcpu)
4843         ;;
4844         clang)
4845             check_native(){
4846                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4847                 sed -n "/cc1.*-target-cpu /{
4848                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4849                             p
4850                             q
4851                         }" $TMPE
4852             }
4853             cpu=$(check_native -march)
4854         ;;
4855     esac
4856
4857     test "${cpu:-host}" = host &&
4858         die "--cpu=host not supported with compiler $cc"
4859 fi
4860
4861 # Deal with common $arch aliases
4862 case "$arch" in
4863     aarch64|arm64)
4864         arch="aarch64"
4865     ;;
4866     arm*|iPad*|iPhone*)
4867         arch="arm"
4868     ;;
4869     mips*|IP*)
4870         case "$arch" in
4871         *el)
4872             add_cppflags -EL
4873             add_ldflags -EL
4874         ;;
4875         *eb)
4876             add_cppflags -EB
4877             add_ldflags -EB
4878         ;;
4879         esac
4880         arch="mips"
4881     ;;
4882     parisc*|hppa*)
4883         arch="parisc"
4884     ;;
4885     "Power Macintosh"|ppc*|powerpc*)
4886         arch="ppc"
4887     ;;
4888     s390|s390x)
4889         arch="s390"
4890     ;;
4891     sh4|sh)
4892         arch="sh4"
4893     ;;
4894     sun4*|sparc*)
4895         arch="sparc"
4896     ;;
4897     tilegx|tile-gx)
4898         arch="tilegx"
4899     ;;
4900     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4901         arch="x86"
4902     ;;
4903 esac
4904
4905 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4906 enable $arch
4907
4908 # Add processor-specific flags
4909 if enabled aarch64; then
4910
4911     case $cpu in
4912         armv*)
4913             cpuflags="-march=$cpu"
4914         ;;
4915         *)
4916             cpuflags="-mcpu=$cpu"
4917         ;;
4918     esac
4919
4920 elif enabled alpha; then
4921
4922     cpuflags="-mcpu=$cpu"
4923
4924 elif enabled arm; then
4925
4926     check_arm_arch() {
4927         test_cpp_condition stddef.h \
4928             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4929             $cpuflags
4930     }
4931
4932     probe_arm_arch() {
4933         if   check_arm_arch 4;        then echo armv4
4934         elif check_arm_arch 4T;       then echo armv4t
4935         elif check_arm_arch 5;        then echo armv5
4936         elif check_arm_arch 5E;       then echo armv5e
4937         elif check_arm_arch 5T;       then echo armv5t
4938         elif check_arm_arch 5TE;      then echo armv5te
4939         elif check_arm_arch 5TEJ;     then echo armv5te
4940         elif check_arm_arch 6;        then echo armv6
4941         elif check_arm_arch 6J;       then echo armv6j
4942         elif check_arm_arch 6K;       then echo armv6k
4943         elif check_arm_arch 6Z;       then echo armv6z
4944         elif check_arm_arch 6KZ;      then echo armv6zk
4945         elif check_arm_arch 6ZK;      then echo armv6zk
4946         elif check_arm_arch 6T2;      then echo armv6t2
4947         elif check_arm_arch 7;        then echo armv7
4948         elif check_arm_arch 7A  7_A;  then echo armv7-a
4949         elif check_arm_arch 7S;       then echo armv7-a
4950         elif check_arm_arch 7R  7_R;  then echo armv7-r
4951         elif check_arm_arch 7M  7_M;  then echo armv7-m
4952         elif check_arm_arch 7EM 7E_M; then echo armv7-m
4953         elif check_arm_arch 8A  8_A;  then echo armv8-a
4954         fi
4955     }
4956
4957     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4958
4959     case $cpu in
4960         armv*)
4961             cpuflags="-march=$cpu"
4962             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4963         ;;
4964         *)
4965             cpuflags="-mcpu=$cpu"
4966             case $cpu in
4967                 cortex-a*)                               subarch=armv7a  ;;
4968                 cortex-r*)                               subarch=armv7r  ;;
4969                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4970                 arm11*)                                  subarch=armv6   ;;
4971                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4972                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4973                 *)                             subarch=$(probe_arm_arch) ;;
4974             esac
4975         ;;
4976     esac
4977
4978     case "$subarch" in
4979         armv5t*)    enable fast_clz                ;;
4980         armv[6-8]*)
4981             enable fast_clz
4982             disabled fast_unaligned || enable fast_unaligned
4983             ;;
4984     esac
4985
4986 elif enabled avr32; then
4987
4988     case $cpu in
4989         ap7[02]0[0-2])
4990             subarch="avr32_ap"
4991             cpuflags="-mpart=$cpu"
4992         ;;
4993         ap)
4994             subarch="avr32_ap"
4995             cpuflags="-march=$cpu"
4996         ;;
4997         uc3[ab]*)
4998             subarch="avr32_uc"
4999             cpuflags="-mcpu=$cpu"
5000         ;;
5001         uc)
5002             subarch="avr32_uc"
5003             cpuflags="-march=$cpu"
5004         ;;
5005     esac
5006
5007 elif enabled bfin; then
5008
5009     cpuflags="-mcpu=$cpu"
5010
5011 elif enabled mips; then
5012
5013     if [ "$cpu" != "generic" ]; then
5014         disable mips32r2
5015         disable mips32r5
5016         disable mips64r2
5017         disable mips32r6
5018         disable mips64r6
5019         disable loongson2
5020         disable loongson3
5021         disable mipsdsp
5022         disable mipsdspr2
5023         disable msa
5024         disable mmi
5025
5026         cpuflags="-march=$cpu"
5027
5028         case $cpu in
5029             # General ISA levels
5030             mips1|mips3)
5031             ;;
5032             mips32r2)
5033                 enable msa
5034                 enable mips32r2
5035             ;;
5036             mips32r5)
5037                 enable msa
5038                 enable mips32r2
5039                 enable mips32r5
5040             ;;
5041             mips64r2|mips64r5)
5042                 enable msa
5043                 enable mmi
5044                 enable mips64r2
5045                 enable loongson3
5046             ;;
5047             # Cores from MIPS(MTI)
5048             24kc)
5049                 disable mipsfpu
5050                 enable mips32r2
5051             ;;
5052             24kf*|24kec|34kc|74Kc|1004kc)
5053                 enable mips32r2
5054             ;;
5055             24kef*|34kf*|1004kf*)
5056                 enable mipsdsp
5057                 enable mips32r2
5058             ;;
5059             p5600)
5060                 enable msa
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 mmi
5076                 enable local_aligned
5077                 enable simd_align_16
5078                 enable fast_64bit
5079                 enable fast_clz
5080                 enable fast_cmov
5081                 enable fast_unaligned
5082                 disable aligned_stack
5083                 # When gcc version less than 5.3.0, add -fno-expensive-optimizations flag.
5084                 if test "$cc_type" = "gcc"; then
5085                     case $gcc_basever in
5086                         2|2.*|3.*|4.*|5.0|5.1|5.2)
5087                         expensive_optimization_flag="-fno-expensive-optimizations"
5088                         ;;
5089                         *)
5090                         expensive_optimization_flag=""
5091                         ;;
5092                     esac
5093                 fi
5094
5095                 case $cpu in
5096                     loongson3*)
5097                         enable loongson3
5098                         enable msa
5099                         cpuflags="-march=loongson3a -mhard-float $expensive_optimization_flag"
5100                     ;;
5101                     loongson2e)
5102                         enable loongson2
5103                         cpuflags="-march=loongson2e -mhard-float $expensive_optimization_flag"
5104                     ;;
5105                     loongson2f)
5106                         enable loongson2
5107                         cpuflags="-march=loongson2f -mhard-float $expensive_optimization_flag"
5108                     ;;
5109                 esac
5110             ;;
5111             *)
5112                 warn "unknown MIPS CPU"
5113             ;;
5114         esac
5115
5116     else
5117         disable mipsdsp
5118         disable mipsdspr2
5119         # Disable DSP stuff for generic CPU, it can't be detected at runtime.
5120         warn 'generic cpu selected'
5121     fi
5122
5123 elif enabled ppc; then
5124
5125     disable ldbrx
5126
5127     case $(tolower $cpu) in
5128         601|ppc601|powerpc601)
5129             cpuflags="-mcpu=601"
5130             disable altivec
5131         ;;
5132         603*|ppc603*|powerpc603*)
5133             cpuflags="-mcpu=603"
5134             disable altivec
5135         ;;
5136         604*|ppc604*|powerpc604*)
5137             cpuflags="-mcpu=604"
5138             disable altivec
5139         ;;
5140         g3|75*|ppc75*|powerpc75*)
5141             cpuflags="-mcpu=750"
5142             disable altivec
5143         ;;
5144         g4|745*|ppc745*|powerpc745*)
5145             cpuflags="-mcpu=7450"
5146             disable vsx
5147         ;;
5148         74*|ppc74*|powerpc74*)
5149             cpuflags="-mcpu=7400"
5150             disable vsx
5151         ;;
5152         g5|970|ppc970|powerpc970)
5153             cpuflags="-mcpu=970"
5154             disable vsx
5155         ;;
5156         power[3-6]*)
5157             cpuflags="-mcpu=$cpu"
5158             disable vsx
5159         ;;
5160         power[7-8]*)
5161             cpuflags="-mcpu=$cpu"
5162         ;;
5163         cell)
5164             cpuflags="-mcpu=cell"
5165             enable ldbrx
5166             disable vsx
5167         ;;
5168         e500mc)
5169             cpuflags="-mcpu=e500mc"
5170             disable altivec
5171         ;;
5172         e500v2)
5173             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
5174             disable altivec
5175             disable dcbzl
5176         ;;
5177         e500)
5178             cpuflags="-mcpu=8540 -mhard-float"
5179             disable altivec
5180             disable dcbzl
5181         ;;
5182     esac
5183
5184 elif enabled sparc; then
5185
5186     case $cpu in
5187         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
5188             cpuflags="-mcpu=$cpu"
5189         ;;
5190         ultrasparc*|niagara[234])
5191             cpuflags="-mcpu=$cpu"
5192         ;;
5193     esac
5194
5195 elif enabled x86; then
5196
5197     case $cpu in
5198         i[345]86|pentium)
5199             cpuflags="-march=$cpu"
5200             disable i686
5201             disable mmx
5202         ;;
5203         # targets that do NOT support nopl and conditional mov (cmov)
5204         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
5205             cpuflags="-march=$cpu"
5206             disable i686
5207         ;;
5208         # targets that do support nopl and conditional mov (cmov)
5209         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
5210         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|skylake*|knl\
5211         |amdfam10|barcelona|b[dt]ver*|znver*)
5212             cpuflags="-march=$cpu"
5213             enable i686
5214             enable fast_cmov
5215         ;;
5216         # targets that do support conditional mov but on which it's slow
5217         pentium4|pentium4m|prescott|nocona)
5218             cpuflags="-march=$cpu"
5219             enable i686
5220             disable fast_cmov
5221         ;;
5222     esac
5223
5224 fi
5225
5226 if [ "$cpu" != generic ]; then
5227     add_cflags  $cpuflags
5228     add_asflags $cpuflags
5229     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
5230 fi
5231
5232 # compiler sanity check
5233 test_exec <<EOF
5234 int main(void){ return 0; }
5235 EOF
5236 if test "$?" != 0; then
5237     echo "$cc is unable to create an executable file."
5238     if test -z "$cross_prefix" && ! enabled cross_compile ; then
5239         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
5240         echo "Only do this if you know what cross compiling means."
5241     fi
5242     die "C compiler test failed."
5243 fi
5244
5245 add_cppflags -D_ISOC99_SOURCE
5246 add_cxxflags -D__STDC_CONSTANT_MACROS
5247 check_cxxflags -std=c++11 || check_cxxflags -std=c++0x
5248
5249 # some compilers silently accept -std=c11, so we also need to check that the
5250 # version macro is defined properly
5251 test_cflags_cc -std=c11 ctype.h "__STDC_VERSION__ >= 201112L" &&
5252     add_cflags -std=c11 ||
5253     check_cflags -std=c99
5254
5255 check_cppflags -D_FILE_OFFSET_BITS=64
5256 check_cppflags -D_LARGEFILE_SOURCE
5257
5258 add_host_cppflags -D_ISOC99_SOURCE
5259 check_host_cflags -std=c99
5260 check_host_cflags -Wall
5261 check_host_cflags $host_cflags_speed
5262
5263 check_64bit(){
5264     arch32=$1
5265     arch64=$2
5266     expr=${3:-'sizeof(void *) > 4'}
5267     test_code cc "" "int test[2*($expr) - 1]" &&
5268         subarch=$arch64 || subarch=$arch32
5269     enable $subarch
5270 }
5271
5272 case "$arch" in
5273     aarch64|alpha|ia64)
5274         enabled shared && enable_weak pic
5275     ;;
5276     mips)
5277         check_64bit mips mips64 '_MIPS_SIM > 1'
5278         enabled shared && enable_weak pic
5279     ;;
5280     parisc)
5281         check_64bit parisc parisc64
5282         enabled shared && enable_weak pic
5283     ;;
5284     ppc)
5285         check_64bit ppc ppc64
5286         enabled shared && enable_weak pic
5287     ;;
5288     s390)
5289         check_64bit s390 s390x
5290         enabled shared && enable_weak pic
5291     ;;
5292     sparc)
5293         check_64bit sparc sparc64
5294         enabled shared && enable_weak pic
5295     ;;
5296     x86)
5297         check_64bit x86_32 x86_64
5298         # Treat x32 as x64 for now. Note it also needs pic if shared
5299         test "$subarch" = "x86_32" && test_cpp_condition stddef.h 'defined(__x86_64__)' &&
5300             subarch=x86_64 && enable x86_64 && disable x86_32
5301         if enabled x86_64; then
5302             enabled shared && enable_weak pic
5303             objformat=elf64
5304         fi
5305     ;;
5306 esac
5307
5308 # OS specific
5309 case $target_os in
5310     aix)
5311         SHFLAGS=-shared
5312         add_cppflags '-I\$(SRC_PATH)/compat/aix'
5313         enabled shared && add_ldflags -Wl,-brtl
5314         arflags='-Xany -r -c'
5315         striptype=""
5316         ;;
5317     android)
5318         disable symver
5319         enable section_data_rel_ro
5320         add_cflags -fPIE
5321         add_ldexeflags -fPIE -pie
5322         SLIB_INSTALL_NAME='$(SLIBNAME)'
5323         SLIB_INSTALL_LINKS=
5324         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
5325         ;;
5326     haiku)
5327         prefix_default="/boot/common"
5328         network_extralibs="-lnetwork"
5329         host_extralibs=
5330         ;;
5331     sunos)
5332         SHFLAGS='-shared -Wl,-h,$$(@F)'
5333         enabled x86 && append SHFLAGS -mimpure-text
5334         network_extralibs="-lsocket -lnsl"
5335         add_cppflags -D__EXTENSIONS__
5336         # When using suncc to build, the Solaris linker will mark
5337         # an executable with each instruction set encountered by
5338         # the Solaris assembler.  As our libraries contain their own
5339         # guards for processor-specific code, instead suppress
5340         # generation of the HWCAPS ELF section on Solaris x86 only.
5341         enabled_all suncc x86 &&
5342             echo "hwcap_1 = OVERRIDE;" > mapfile &&
5343             add_ldflags -Wl,-M,mapfile
5344         nm_default='nm -P -g'
5345         striptype=""
5346         version_script='-M'
5347         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
5348         ;;
5349     netbsd)
5350         disable symver
5351         oss_indev_extralibs="-lossaudio"
5352         oss_outdev_extralibs="-lossaudio"
5353         enabled gcc || check_ldflags -Wl,-zmuldefs
5354         ;;
5355     openbsd|bitrig)
5356         disable symver
5357         enable section_data_rel_ro
5358         striptype=""
5359         SHFLAGS='-shared'
5360         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
5361         SLIB_INSTALL_LINKS=
5362         oss_indev_extralibs="-lossaudio"
5363         oss_outdev_extralibs="-lossaudio"
5364         ;;
5365     dragonfly)
5366         disable symver
5367         ;;
5368     freebsd)
5369         ;;
5370     bsd/os)
5371         add_extralibs -lpoll -lgnugetopt
5372         strip="strip -d"
5373         ;;
5374     darwin)
5375         enabled ppc && add_asflags -force_cpusubtype_ALL
5376         install_name_dir_default='$(SHLIBDIR)'
5377         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(INSTALL_NAME_DIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
5378         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
5379         strip="${strip} -x"
5380         add_ldflags -Wl,-dynamic,-search_paths_first
5381         check_cflags -Werror=partial-availability
5382         SLIBSUF=".dylib"
5383         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
5384         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
5385         enabled x86_64 && objformat="macho64" || objformat="macho32"
5386         enabled_any pic shared x86_64 ||
5387             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
5388         check_headers dispatch/dispatch.h &&
5389             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
5390         if test -n "$sysroot"; then
5391             is_in -isysroot $cc $CPPFLAGS $CFLAGS || check_cppflags -isysroot $sysroot
5392             is_in -isysroot $ld $LDFLAGS          || check_ldflags  -isysroot $sysroot
5393         fi
5394         version_script='-exported_symbols_list'
5395         VERSION_SCRIPT_POSTPROCESS_CMD='tr " " "\n" | sed -n /global:/,/local:/p | grep ";" | tr ";" "\n" | sed -E "s/(.+)/_\1/g" | sed -E "s/(.+[^*])$$$$/\1*/"'
5396         # Workaround for Xcode 11 -fstack-check bug
5397         if enabled clang; then
5398             clang_version=$($cc -dumpversion)
5399             test ${clang_version%%.*} -eq 11 && add_cflags -fno-stack-check
5400         fi
5401         ;;
5402     msys*)
5403         die "Native MSYS builds are discouraged, please use the MINGW environment."
5404         ;;
5405     mingw32*|mingw64*)
5406         target_os=mingw32
5407         LIBTARGET=i386
5408         if enabled x86_64; then
5409             LIBTARGET="i386:x86-64"
5410         elif enabled arm; then
5411             LIBTARGET="arm"
5412         elif enabled aarch64; then
5413             LIBTARGET="arm64"
5414         fi
5415         if enabled shared; then
5416             # Cannot build both shared and static libs when using dllimport.
5417             disable static
5418         fi
5419         enabled shared && ! enabled small && test_cmd $windres --version && enable gnu_windres
5420         enabled x86_32 && check_ldflags -Wl,--large-address-aware
5421         shlibdir_default="$bindir_default"
5422         SLIBPREF=""
5423         SLIBSUF=".dll"
5424         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5425         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5426         if test_cmd lib.exe -list; then
5427             SLIB_EXTRA_CMD=-'lib.exe -nologo -machine:$(LIBTARGET) -def:$$(@:$(SLIBSUF)=.def) -out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
5428             if enabled x86_64; then
5429                 LIBTARGET=x64
5430             fi
5431         else
5432             SLIB_EXTRA_CMD=-'$(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
5433         fi
5434         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5435         SLIB_INSTALL_LINKS=
5436         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
5437         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
5438         SLIB_CREATE_DEF_CMD='EXTERN_PREFIX="$(EXTERN_PREFIX)" AR="$(AR_CMD)" NM="$(NM_CMD)" $(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
5439         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--disable-auto-image-base $$(@:$(SLIBSUF)=.def)'
5440         enabled x86_64 && objformat="win64" || objformat="win32"
5441         dlltool="${cross_prefix}dlltool"
5442         ranlib=:
5443         enable dos_paths
5444         check_ldflags -Wl,--nxcompat,--dynamicbase
5445         # Lets work around some stupidity in binutils.
5446         # ld will strip relocations from executables even though we need them
5447         # for dynamicbase (ASLR).  Using -pie does retain the reloc section
5448         # however ld then forgets what the entry point should be (oops) so we
5449         # have to manually (re)set it.
5450         if enabled x86_32; then
5451             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,_mainCRTStartup
5452         elif enabled x86_64; then
5453             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,mainCRTStartup
5454             check_ldflags -Wl,--high-entropy-va # binutils 2.25
5455             # Set image base >4GB for extra entropy with HEASLR
5456             add_ldexeflags -Wl,--image-base,0x140000000
5457             append SHFLAGS -Wl,--image-base,0x180000000
5458         fi
5459         ;;
5460     win32|win64)
5461         disable symver
5462         if enabled shared; then
5463             # Link to the import library instead of the normal static library
5464             # for shared libs.
5465             LD_LIB='%.lib'
5466             # Cannot build both shared and static libs with MSVC or icl.
5467             disable static
5468         fi
5469         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
5470         shlibdir_default="$bindir_default"
5471         SLIBPREF=""
5472         SLIBSUF=".dll"
5473         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5474         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5475         SLIB_CREATE_DEF_CMD='EXTERN_PREFIX="$(EXTERN_PREFIX)" $(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
5476         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5477         SLIB_INSTALL_LINKS=
5478         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
5479         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
5480         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
5481         enabled x86_64 && objformat="win64" || objformat="win32"
5482         ranlib=:
5483         enable dos_paths
5484         ;;
5485     cygwin*)
5486         target_os=cygwin
5487         shlibdir_default="$bindir_default"
5488         SLIBPREF="cyg"
5489         SLIBSUF=".dll"
5490         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5491         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
5492         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5493         SLIB_INSTALL_LINKS=
5494         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
5495         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
5496         enabled x86_64 && objformat="win64" || objformat="win32"
5497         enable dos_paths
5498         enabled shared && ! enabled small && test_cmd $windres --version && enable gnu_windres
5499         add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5500         ;;
5501     *-dos|freedos|opendos)
5502         network_extralibs="-lsocket"
5503         objformat="coff"
5504         enable dos_paths
5505         ;;
5506     linux)
5507         enable section_data_rel_ro
5508         enabled_any arm aarch64 && enable_weak linux_perf
5509         ;;
5510     irix*)
5511         target_os=irix
5512         ranlib="echo ignoring ranlib"
5513         ;;
5514     os/2*)
5515         strip="lxlite -CS"
5516         striptype=""
5517         objformat="aout"
5518         add_cppflags -D_GNU_SOURCE
5519         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zhigh-mem -Zmap
5520         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
5521         LIBSUF="_s.a"
5522         SLIBPREF=""
5523         SLIBSUF=".dll"
5524         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5525         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(FULLNAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
5526         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(FULLNAME).def; \
5527             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(FULLNAME).def; \
5528             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(FULLNAME).def; \
5529             echo EXPORTS >> $(SUBDIR)$(FULLNAME).def; \
5530             emxexp $(OBJS) >> $(SUBDIR)$(FULLNAME).def'
5531         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.a $(SUBDIR)$(FULLNAME).def; \
5532             emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.lib $(SUBDIR)$(FULLNAME).def;'
5533         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5534         SLIB_INSTALL_LINKS=
5535         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(FULLNAME)_dll.a $(LIBPREF)$(FULLNAME)_dll.lib'
5536         enable dos_paths
5537         enable_weak os2threads
5538         ;;
5539     gnu/kfreebsd)
5540         add_cppflags -D_BSD_SOURCE
5541         ;;
5542     gnu)
5543         ;;
5544     qnx)
5545         add_cppflags -D_QNX_SOURCE
5546         network_extralibs="-lsocket"
5547         ;;
5548     symbian)
5549         SLIBSUF=".dll"
5550         enable dos_paths
5551         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
5552         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
5553         add_ldflags -Wl,--target1-abs,--no-undefined \
5554                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
5555                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
5556         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
5557                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
5558                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
5559         ;;
5560     minix)
5561         ;;
5562     none)
5563         ;;
5564     *)
5565         die "Unknown OS '$target_os'."
5566         ;;
5567 esac
5568
5569 # test if creating links works
5570 link_dest=$(mktemp -u $TMPDIR/dest_XXXXXXXX)
5571 link_name=$(mktemp -u $TMPDIR/name_XXXXXXXX)
5572 mkdir "$link_dest"
5573 $ln_s "$link_dest" "$link_name"
5574 touch "$link_dest/test_file"
5575 if [ "$source_path" != "." ] && [ "$source_path" != "src" ] && ([ ! -d src ] || [ -L src ]) && [ -e "$link_name/test_file" ]; then
5576     # create link to source path
5577     [ -e src ] && rm src
5578     $ln_s "$source_path" src
5579     source_link=src
5580 else
5581     # creating directory links doesn't work
5582     # fall back to using the full source path
5583     source_link="$source_path"
5584 fi
5585 # cleanup
5586 rm -r "$link_dest"
5587 rm -r "$link_name"
5588
5589 # determine libc flavour
5590
5591 probe_libc(){
5592     pfx=$1
5593     pfx_no_=${pfx%_}
5594     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
5595     if test_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
5596         eval ${pfx}libc_type=uclibc
5597         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5598     elif test_${pfx}cpp_condition features.h "defined __GLIBC__"; then
5599         eval ${pfx}libc_type=glibc
5600         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5601     # MinGW headers can be installed on Cygwin, so check for newlib first.
5602     elif test_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
5603         eval ${pfx}libc_type=newlib
5604         add_${pfx}cppflags -U__STRICT_ANSI__ -D_XOPEN_SOURCE=600
5605     # MinGW64 is backwards compatible with MinGW32, so check for it first.
5606     elif test_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
5607         eval ${pfx}libc_type=mingw64
5608         if test_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
5609             add_compat msvcrt/snprintf.o
5610             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
5611         fi
5612         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5613         eval test \$${pfx_no_}cc_type = "gcc" &&
5614             add_${pfx}cppflags -D__printf__=__gnu_printf__
5615         test_${pfx}cpp_condition windows.h "!defined(_WIN32_WINNT) || _WIN32_WINNT < 0x0600" &&
5616             add_${pfx}cppflags -D_WIN32_WINNT=0x0600
5617         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5618     elif test_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
5619          test_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
5620         eval ${pfx}libc_type=mingw32
5621         test_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
5622             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
5623             die "ERROR: MinGW32 runtime version must be >= 3.15."
5624         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5625         test_${pfx}cpp_condition _mingw.h "__MSVCRT_VERSION__ < 0x0700" &&
5626             add_${pfx}cppflags -D__MSVCRT_VERSION__=0x0700
5627         test_${pfx}cpp_condition windows.h "!defined(_WIN32_WINNT) || _WIN32_WINNT < 0x0600" &&
5628             add_${pfx}cppflags -D_WIN32_WINNT=0x0600
5629         eval test \$${pfx_no_}cc_type = "gcc" &&
5630             add_${pfx}cppflags -D__printf__=__gnu_printf__
5631         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5632     elif test_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
5633         eval ${pfx}libc_type=msvcrt
5634         if test_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
5635             if [ "$pfx" = host_ ]; then
5636                 add_host_cppflags -Dsnprintf=_snprintf
5637             else
5638                 add_compat strtod.o strtod=avpriv_strtod
5639                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
5640                                              _snprintf=avpriv_snprintf  \
5641                                              vsnprintf=avpriv_vsnprintf
5642             fi
5643         fi
5644         add_${pfx}cppflags -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS
5645         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
5646         # 0x601 by default unless something else is set by the user.
5647         # This can easily lead to us detecting functions only present
5648         # in such new versions and producing binaries requiring windows 7.0.
5649         # Therefore explicitly set the default to Vista unless the user has
5650         # set something else on the command line.
5651         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
5652         # family. For these cases, configure is free to use any functions
5653         # found in the SDK headers by default. (Alternatively, we could force
5654         # _WIN32_WINNT to 0x0602 in that case.)
5655         test_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
5656             { test_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0600; }
5657 #ifdef WINAPI_FAMILY
5658 #include <winapifamily.h>
5659 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
5660 #error not desktop
5661 #endif
5662 #endif
5663 EOF
5664         if [ "$pfx" = "" ]; then
5665             check_func strtoll || add_cflags -Dstrtoll=_strtoi64
5666             check_func strtoull || add_cflags -Dstrtoull=_strtoui64
5667         fi
5668     elif test_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
5669         eval ${pfx}libc_type=klibc
5670     elif test_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
5671         eval ${pfx}libc_type=bionic
5672     elif test_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
5673         eval ${pfx}libc_type=solaris
5674         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
5675     elif test_${pfx}cpp_condition sys/version.h "defined __DJGPP__"; then
5676         eval ${pfx}libc_type=djgpp
5677         add_cppflags -U__STRICT_ANSI__
5678         add_cflags "-include $source_path/compat/djgpp/math.h"
5679         add_compat djgpp/math.o
5680     fi
5681     test_${pfx}cc <<EOF
5682 #include <time.h>
5683 void *v = localtime_r;
5684 EOF
5685 test "$?" != 0 && test_${pfx}cc -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600 <<EOF && add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5686 #include <time.h>
5687 void *v = localtime_r;
5688 EOF
5689
5690     eval test -n "\${${pfx}libc_type}" && enable ${pfx}libc_${libc_type}
5691 }
5692
5693 probe_libc
5694 probe_libc host_
5695
5696 # hacks for compiler/libc/os combinations
5697
5698 case $libc_type in
5699     bionic)
5700         add_compat strtod.o strtod=avpriv_strtod
5701         ;;
5702 esac
5703
5704 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
5705     add_cppflags '-I\$(SRC_PATH)/compat/float'
5706
5707 test_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
5708
5709 set_default libdir
5710 : ${shlibdir_default:="$libdir"}
5711 : ${pkgconfigdir_default:="$libdir/pkgconfig"}
5712
5713 set_default $PATHS_LIST
5714 set_default nm
5715
5716 disabled optimizations || enabled ossfuzz || check_cflags -fomit-frame-pointer
5717
5718 enable_weak_pic() {
5719     disabled pic && return
5720     enable pic
5721     add_cppflags -DPIC
5722     case "$target_os" in
5723     mingw*|cygwin*|win*)
5724         ;;
5725     *)
5726         add_cflags -fPIC
5727         add_asflags -fPIC
5728         ;;
5729     esac
5730 }
5731
5732 enabled pic && enable_weak_pic
5733
5734 test_cc <<EOF || die "Symbol mangling check failed."
5735 int ff_extern;
5736 EOF
5737 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
5738 extern_prefix=${sym%%ff_extern*}
5739
5740 ! disabled inline_asm && check_inline_asm inline_asm '"" ::'
5741
5742 for restrict_keyword in restrict __restrict__ __restrict ""; do
5743     test_code cc "" "char * $restrict_keyword p" && break
5744 done
5745
5746 check_cc pragma_deprecated "" '_Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"")'
5747
5748 # The global variable ensures the bits appear unchanged in the object file.
5749 test_cc <<EOF || die "endian test failed"
5750 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
5751 EOF
5752 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
5753
5754 check_cc const_nan math.h "struct { double d; } static const bar[] = { { NAN } }"
5755
5756 if ! enabled ppc64 || enabled bigendian; then
5757     disable vsx
5758 fi
5759
5760 check_gas() {
5761     log "check_gas using '$as' as AS"
5762     # :vararg is used on aarch64, arm and ppc altivec
5763     check_as vararg "
5764 .macro m n, y:vararg=0
5765 \n: .int \y
5766 .endm
5767 m x" || return 1
5768     # .altmacro is only used in arm asm
5769     ! enabled arm || check_as gnu_as ".altmacro"
5770 }
5771
5772 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
5773     nogas=:
5774     enabled_any arm aarch64 && nogas=die
5775     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
5776     as_noop=-v
5777
5778     case $as_type in
5779         arm*) gaspp_as_type=armasm; as_noop=-h ;;
5780         gcc)  gaspp_as_type=gas ;;
5781         *)    gaspp_as_type=$as_type ;;
5782     esac
5783
5784     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
5785
5786     test "${as#*gas-preprocessor.pl}" != "$as" ||
5787     test_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- ${as:=$cc} $as_noop &&
5788         gas="${gas:=gas-preprocessor.pl} -arch $arch -as-type $gaspp_as_type -- ${as:=$cc}"
5789
5790     if ! check_gas ; then
5791         as=${gas:=$as}
5792         check_gas || \
5793             $nogas "GNU assembler not found, install/update gas-preprocessor"
5794     fi
5795
5796     check_as as_func ".func test
5797                       .endfunc"
5798 fi
5799
5800 check_inline_asm inline_asm_labels '"1:\n"'
5801
5802 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
5803
5804 if enabled aarch64; then
5805     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
5806     # internal assembler in clang 3.3 does not support this instruction
5807     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
5808     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
5809
5810     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
5811
5812 elif enabled alpha; then
5813
5814     check_cflags -mieee
5815
5816 elif enabled arm; then
5817
5818     enabled msvc && check_cpp_condition thumb stddef.h "defined _M_ARMT"
5819     test_cpp_condition stddef.h "defined __thumb__" && test_cc <<EOF && enable_weak thumb
5820 float func(float a, float b){ return a+b; }
5821 EOF
5822     enabled thumb && check_cflags -mthumb || check_cflags -marm
5823
5824     if check_cpp_condition vfp_args stddef.h "defined __ARM_PCS_VFP"; then
5825         :
5826     elif check_cpp_condition vfp_args stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
5827         :
5828     elif ! test_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
5829         case "${cross_prefix:-$cc}" in
5830             *hardfloat*) enable vfp_args; fpabi=vfp ;;
5831             *) check_ld "cc" vfp_args <<EOF && fpabi=vfp || fpabi=soft ;;
5832 __asm__ (".eabi_attribute 28, 1");
5833 int main(void) { return 0; }
5834 EOF
5835         esac
5836         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
5837     fi
5838
5839     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
5840     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
5841     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
5842     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
5843     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
5844     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
5845     enabled setend  && check_insn setend  'setend be'
5846
5847     [ $target_os = linux ] || [ $target_os = android ] ||
5848         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
5849             $ARCH_EXT_LIST_ARM
5850
5851     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
5852
5853     check_as as_arch_directive ".arch armv7-a"
5854     check_as as_dn_directive   "ra .dn d0.i16"
5855     check_as as_fpu_directive  ".fpu neon"
5856
5857     # llvm's integrated assembler supports .object_arch from llvm 3.5
5858     [ "$objformat" = elf32 ] || [ "$objformat" = elf64 ] &&
5859         check_as as_object_arch ".object_arch armv4"
5860
5861     # MS armasm fails to assemble our PIC constructs
5862     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
5863
5864 elif enabled mips; then
5865
5866     # Check toolchain ISA level
5867     if enabled mips64; then
5868         enabled mips64r6 && check_inline_asm mips64r6 '"dlsa $0, $0, $0, 1"' &&
5869             disable mips64r2
5870
5871         enabled mips64r2 && check_inline_asm mips64r2 '"dext $0, $0, 0, 1"'
5872
5873         disable mips32r6 && disable mips32r5 && disable mips32r2
5874     else