Merge commit 'b93026777aada7742583d8c5ab079e9f4dfe9a5d'
[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-libass          enable libass subtitles rendering,
222                            needed for subtitles and ass filter [no]
223   --enable-libbluray       enable BluRay reading using libbluray [no]
224   --enable-libbs2b         enable bs2b DSP library [no]
225   --enable-libcaca         enable textual display using libcaca [no]
226   --enable-libcelt         enable CELT decoding via libcelt [no]
227   --enable-libcdio         enable audio CD grabbing with libcdio [no]
228   --enable-libcodec2       enable codec2 en/decoding using libcodec2 [no]
229   --enable-libdavs2        enable AVS2 decoding via libdavs2 [no]
230   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
231                            and libraw1394 [no]
232   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
233   --enable-libflite        enable flite (voice synthesis) support via libflite [no]
234   --enable-libfontconfig   enable libfontconfig, useful for drawtext filter [no]
235   --enable-libfreetype     enable libfreetype, needed for drawtext filter [no]
236   --enable-libfribidi      enable libfribidi, improves drawtext filter [no]
237   --enable-libgme          enable Game Music Emu via libgme [no]
238   --enable-libgsm          enable GSM de/encoding via libgsm [no]
239   --enable-libiec61883     enable iec61883 via libiec61883 [no]
240   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
241   --enable-libjack         enable JACK audio sound server [no]
242   --enable-libkvazaar      enable HEVC encoding via libkvazaar [no]
243   --enable-liblensfun      enable lensfun lens correction [no]
244   --enable-libmodplug      enable ModPlug via libmodplug [no]
245   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
246   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
247   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
248   --enable-libopencv       enable video filtering via libopencv [no]
249   --enable-libopenh264     enable H.264 encoding via OpenH264 [no]
250   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
251   --enable-libopenmpt      enable decoding tracked files via libopenmpt [no]
252   --enable-libopus         enable Opus de/encoding via libopus [no]
253   --enable-libpulse        enable Pulseaudio input via libpulse [no]
254   --enable-librsvg         enable SVG rasterization via librsvg [no]
255   --enable-librubberband   enable rubberband needed for rubberband filter [no]
256   --enable-librtmp         enable RTMP[E] support via librtmp [no]
257   --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
258   --enable-libsmbclient    enable Samba protocol via libsmbclient [no]
259   --enable-libsnappy       enable Snappy compression, needed for hap encoding [no]
260   --enable-libsoxr         enable Include libsoxr resampling [no]
261   --enable-libspeex        enable Speex de/encoding via libspeex [no]
262   --enable-libsrt          enable Haivision SRT protocol via libsrt [no]
263   --enable-libssh          enable SFTP protocol via libssh [no]
264   --enable-libtensorflow   enable TensorFlow as a DNN module backend
265                            for DNN based filters like sr [no]
266   --enable-libtesseract    enable Tesseract, needed for ocr filter [no]
267   --enable-libtheora       enable Theora encoding via libtheora [no]
268   --enable-libtls          enable LibreSSL (via libtls), needed for https support
269                            if openssl, gnutls or mbedtls is not used [no]
270   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
271   --enable-libv4l2         enable libv4l2/v4l-utils [no]
272   --enable-libvidstab      enable video stabilization using vid.stab [no]
273   --enable-libvmaf         enable vmaf filter via libvmaf [no]
274   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
275   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
276                            native implementation exists [no]
277   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
278   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
279   --enable-libwebp         enable WebP encoding via libwebp [no]
280   --enable-libx264         enable H.264 encoding via x264 [no]
281   --enable-libx265         enable HEVC encoding via x265 [no]
282   --enable-libxavs         enable AVS encoding via xavs [no]
283   --enable-libxcb          enable X11 grabbing using XCB [autodetect]
284   --enable-libxcb-shm      enable X11 grabbing shm communication [autodetect]
285   --enable-libxcb-xfixes   enable X11 grabbing mouse rendering [autodetect]
286   --enable-libxcb-shape    enable X11 grabbing shape rendering [autodetect]
287   --enable-libxvid         enable Xvid encoding via xvidcore,
288                            native MPEG-4/Xvid encoder exists [no]
289   --enable-libxml2         enable XML parsing using the C library libxml2, needed
290                            for dash demuxing support [no]
291   --enable-libzimg         enable z.lib, needed for zscale filter [no]
292   --enable-libzmq          enable message passing via libzmq [no]
293   --enable-libzvbi         enable teletext support via libzvbi [no]
294   --enable-lv2             enable LV2 audio filtering [no]
295   --disable-lzma           disable lzma [autodetect]
296   --enable-decklink        enable Blackmagic DeckLink I/O support [no]
297   --enable-libndi_newtek   enable Newteck NDI I/O support [no]
298   --enable-mbedtls         enable mbedTLS, needed for https support
299                            if openssl, gnutls or libtls is not used [no]
300   --enable-mediacodec      enable Android MediaCodec support [no]
301   --enable-libmysofa       enable libmysofa, needed for sofalizer filter [no]
302   --enable-openal          enable OpenAL 1.1 capture support [no]
303   --enable-opencl          enable OpenCL processing [no]
304   --enable-opengl          enable OpenGL rendering [no]
305   --enable-openssl         enable openssl, needed for https support
306                            if gnutls, libtls or mbedtls is not used [no]
307   --disable-sndio          disable sndio support [autodetect]
308   --disable-schannel       disable SChannel SSP, needed for TLS support on
309                            Windows if openssl and gnutls are not used [autodetect]
310   --disable-sdl2           disable sdl2 [autodetect]
311   --disable-securetransport disable Secure Transport, needed for TLS support
312                            on OSX if openssl and gnutls are not used [autodetect]
313   --enable-vapoursynth     enable VapourSynth demuxer [no]
314   --disable-xlib           disable xlib [autodetect]
315   --disable-zlib           disable zlib [autodetect]
316
317   The following libraries provide various hardware acceleration features:
318   --disable-amf            disable AMF video encoding code [autodetect]
319   --disable-audiotoolbox   disable Apple AudioToolbox code [autodetect]
320   --enable-cuda-sdk        enable CUDA features that require the CUDA SDK [no]
321   --disable-cuvid          disable Nvidia CUVID support [autodetect]
322   --disable-d3d11va        disable Microsoft Direct3D 11 video acceleration code [autodetect]
323   --disable-dxva2          disable Microsoft DirectX 9 video acceleration code [autodetect]
324   --disable-ffnvcodec      disable dynamically linked Nvidia code [autodetect]
325   --enable-libdrm          enable DRM code (Linux) [no]
326   --enable-libmfx          enable Intel MediaSDK (AKA Quick Sync Video) code via libmfx [no]
327   --enable-libnpp          enable Nvidia Performance Primitives-based code [no]
328   --enable-mmal            enable Broadcom Multi-Media Abstraction Layer (Raspberry Pi) via MMAL [no]
329   --disable-nvdec          disable Nvidia video decoding acceleration (via hwaccel) [autodetect]
330   --disable-nvenc          disable Nvidia video encoding code [autodetect]
331   --enable-omx             enable OpenMAX IL code [no]
332   --enable-omx-rpi         enable OpenMAX IL code for Raspberry Pi [no]
333   --enable-rkmpp           enable Rockchip Media Process Platform code [no]
334   --disable-v4l2-m2m       disable V4L2 mem2mem code [autodetect]
335   --disable-vaapi          disable Video Acceleration API (mainly Unix/Intel) code [autodetect]
336   --disable-vdpau          disable Nvidia Video Decode and Presentation API for Unix code [autodetect]
337   --disable-videotoolbox   disable VideoToolbox code [autodetect]
338
339 Toolchain options:
340   --arch=ARCH              select architecture [$arch]
341   --cpu=CPU                select the minimum required CPU (affects
342                            instruction selection, may crash on older CPUs)
343   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
344   --progs-suffix=SUFFIX    program name suffix []
345   --enable-cross-compile   assume a cross-compiler is used
346   --sysroot=PATH           root of cross-build tree
347   --sysinclude=PATH        location of cross-build system headers
348   --target-os=OS           compiler targets OS [$target_os]
349   --target-exec=CMD        command to run executables on target
350   --target-path=DIR        path to view of build directory on target
351   --target-samples=DIR     path to samples directory on target
352   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
353   --toolchain=NAME         set tool defaults according to NAME
354                            (gcc-asan, clang-asan, gcc-msan, clang-msan,
355                            gcc-tsan, clang-tsan, gcc-usan, clang-usan,
356                            valgrind-massif, valgrind-memcheck,
357                            msvc, icl, gcov, llvm-cov, hardened)
358   --nm=NM                  use nm tool NM [$nm_default]
359   --ar=AR                  use archive tool AR [$ar_default]
360   --as=AS                  use assembler AS [$as_default]
361   --ln_s=LN_S              use symbolic link tool LN_S [$ln_s_default]
362   --strip=STRIP            use strip tool STRIP [$strip_default]
363   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
364   --x86asmexe=EXE          use nasm-compatible assembler EXE [$x86asmexe_default]
365   --cc=CC                  use C compiler CC [$cc_default]
366   --cxx=CXX                use C compiler CXX [$cxx_default]
367   --objcc=OCC              use ObjC compiler OCC [$cc_default]
368   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
369   --nvcc=NVCC              use Nvidia CUDA compiler NVCC [$nvcc_default]
370   --ld=LD                  use linker LD [$ld_default]
371   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
372   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
373   --ranlib=RANLIB          use ranlib RANLIB [$ranlib_default]
374   --doxygen=DOXYGEN        use DOXYGEN to generate API doc [$doxygen_default]
375   --host-cc=HOSTCC         use host C compiler HOSTCC
376   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
377   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
378   --host-ld=HOSTLD         use host linker HOSTLD
379   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
380   --host-libs=HLIBS        use libs HLIBS when linking for host
381   --host-os=OS             compiler host OS [$target_os]
382   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
383   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
384   --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
385   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
386   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
387   --extra-ldsoflags=ELDFLAGS add ELDFLAGS to LDSOFLAGS [$LDSOFLAGS]
388   --extra-libs=ELIBS       add ELIBS [$ELIBS]
389   --extra-version=STRING   version string suffix []
390   --optflags=OPTFLAGS      override optimization-related compiler flags
391   --nvccflags=NVCCFLAGS    override nvcc flags [$nvccflags_default]
392   --build-suffix=SUFFIX    library name suffix []
393   --enable-pic             build position-independent code
394   --enable-thumb           compile for Thumb instruction set
395   --enable-lto             use link-time optimization
396   --env="ENV=override"     override the environment variables
397
398 Advanced options (experts only):
399   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
400   --custom-allocator=NAME  use a supported custom allocator
401   --disable-symver         disable symbol versioning
402   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
403   --disable-safe-bitstream-reader
404                            disable buffer boundary checking in bitreaders
405                            (faster, but may crash)
406   --sws-max-filter-size=N  the max filter size swscale uses [$sws_max_filter_size_default]
407
408 Optimization options (experts only):
409   --disable-asm            disable all assembly optimizations
410   --disable-altivec        disable AltiVec optimizations
411   --disable-vsx            disable VSX optimizations
412   --disable-power8         disable POWER8 optimizations
413   --disable-amd3dnow       disable 3DNow! optimizations
414   --disable-amd3dnowext    disable 3DNow! extended optimizations
415   --disable-mmx            disable MMX optimizations
416   --disable-mmxext         disable MMXEXT optimizations
417   --disable-sse            disable SSE optimizations
418   --disable-sse2           disable SSE2 optimizations
419   --disable-sse3           disable SSE3 optimizations
420   --disable-ssse3          disable SSSE3 optimizations
421   --disable-sse4           disable SSE4 optimizations
422   --disable-sse42          disable SSE4.2 optimizations
423   --disable-avx            disable AVX optimizations
424   --disable-xop            disable XOP optimizations
425   --disable-fma3           disable FMA3 optimizations
426   --disable-fma4           disable FMA4 optimizations
427   --disable-avx2           disable AVX2 optimizations
428   --disable-avx512         disable AVX-512 optimizations
429   --disable-aesni          disable AESNI optimizations
430   --disable-armv5te        disable armv5te optimizations
431   --disable-armv6          disable armv6 optimizations
432   --disable-armv6t2        disable armv6t2 optimizations
433   --disable-vfp            disable VFP optimizations
434   --disable-neon           disable NEON optimizations
435   --disable-inline-asm     disable use of inline assembly
436   --disable-x86asm         disable use of standalone x86 assembly
437   --disable-mipsdsp        disable MIPS DSP ASE R1 optimizations
438   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
439   --disable-msa            disable MSA optimizations
440   --disable-mipsfpu        disable floating point MIPS optimizations
441   --disable-mmi            disable Loongson SIMD optimizations
442   --disable-fast-unaligned consider unaligned accesses slow
443
444 Developer options (useful when working on FFmpeg itself):
445   --disable-debug          disable debugging symbols
446   --enable-debug=LEVEL     set the debug level [$debuglevel]
447   --disable-optimizations  disable compiler optimizations
448   --enable-extra-warnings  enable more compiler warnings
449   --disable-stripping      disable stripping of executables and shared libraries
450   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
451                            2 causes a slowdown at runtime.
452   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
453   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
454                            leaks and errors, using the specified valgrind binary.
455                            Cannot be combined with --target-exec
456   --enable-ftrapv          Trap arithmetic overflows
457   --samples=PATH           location of test samples for FATE, if not set use
458                            \$FATE_SAMPLES at make invocation time.
459   --enable-neon-clobber-test check NEON registers for clobbering (should be
460                            used only for debugging purposes)
461   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
462                            should be used only for debugging purposes)
463   --enable-random          randomly enable/disable components
464   --disable-random
465   --enable-random=LIST     randomly enable/disable specific components or
466   --disable-random=LIST    component groups. LIST is a comma-separated list
467                            of NAME[:PROB] entries where NAME is a component
468                            (group) and PROB the probability associated with
469                            NAME (default 0.5).
470   --random-seed=VALUE      seed value for --enable/disable-random
471   --disable-valgrind-backtrace do not print a backtrace under Valgrind
472                            (only applies to --disable-optimizations builds)
473   --enable-osfuzz          Enable building fuzzer tool
474   --libfuzzer=PATH         path to libfuzzer
475   --ignore-tests=TESTS     comma-separated list (without "fate-" prefix
476                            in the name) of tests whose result is ignored
477   --enable-linux-perf      enable Linux Performance Monitor API
478
479 NOTE: Object files are built at the place where configure is launched.
480 EOF
481   exit 0
482 }
483
484 if test -t 1 && which tput >/dev/null 2>&1; then
485     ncolors=$(tput colors)
486     if test -n "$ncolors" && test $ncolors -ge 8; then
487         bold_color=$(tput bold)
488         warn_color=$(tput setaf 3)
489         error_color=$(tput setaf 1)
490         reset_color=$(tput sgr0)
491     fi
492     # 72 used instead of 80 since that's the default of pr
493     ncols=$(tput cols)
494 fi
495 : ${ncols:=72}
496
497 log(){
498     echo "$@" >> $logfile
499 }
500
501 log_file(){
502     log BEGIN $1
503     pr -n -t $1 >> $logfile
504     log END $1
505 }
506
507 warn(){
508     log "WARNING: $*"
509     WARNINGS="${WARNINGS}WARNING: $*\n"
510 }
511
512 die(){
513     log "$@"
514     echo "$error_color$bold_color$@$reset_color"
515     cat <<EOF
516
517 If you think configure made a mistake, make sure you are using the latest
518 version from Git.  If the latest version fails, report the problem to the
519 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
520 EOF
521     if disabled logging; then
522         cat <<EOF
523 Rerun configure with logging enabled (do not use --disable-logging), and
524 include the log this produces with your report.
525 EOF
526     else
527         cat <<EOF
528 Include the log file "$logfile" produced by configure as this will help
529 solve the problem.
530 EOF
531     fi
532     exit 1
533 }
534
535 # Avoid locale weirdness, besides we really just want to translate ASCII.
536 toupper(){
537     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
538 }
539
540 tolower(){
541     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
542 }
543
544 c_escape(){
545     echo "$*" | sed 's/["\\]/\\\0/g'
546 }
547
548 sh_quote(){
549     v=$(echo "$1" | sed "s/'/'\\\\''/g")
550     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
551     echo "$v"
552 }
553
554 cleanws(){
555     echo "$@" | sed 's/^ *//;s/[[:space:]][[:space:]]*/ /g;s/ *$//'
556 }
557
558 filter(){
559     pat=$1
560     shift
561     for v; do
562         eval "case '$v' in $pat) printf '%s ' '$v' ;; esac"
563     done
564 }
565
566 filter_out(){
567     pat=$1
568     shift
569     for v; do
570         eval "case '$v' in $pat) ;; *) printf '%s ' '$v' ;; esac"
571     done
572 }
573
574 map(){
575     m=$1
576     shift
577     for v; do eval $m; done
578 }
579
580 add_suffix(){
581     suffix=$1
582     shift
583     for v; do echo ${v}${suffix}; done
584 }
585
586 remove_suffix(){
587     suffix=$1
588     shift
589     for v; do echo ${v%$suffix}; done
590 }
591
592 set_all(){
593     value=$1
594     shift
595     for var in $*; do
596         eval $var=$value
597     done
598 }
599
600 set_weak(){
601     value=$1
602     shift
603     for var; do
604         eval : \${$var:=$value}
605     done
606 }
607
608 sanitize_var_name(){
609     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
610 }
611
612 set_sanitized(){
613     var=$1
614     shift
615     eval $(sanitize_var_name "$var")='$*'
616 }
617
618 get_sanitized(){
619     eval echo \$$(sanitize_var_name "$1")
620 }
621
622 pushvar(){
623     for pvar in $*; do
624         eval level=\${${pvar}_level:=0}
625         eval ${pvar}_${level}="\$$pvar"
626         eval ${pvar}_level=$(($level+1))
627     done
628 }
629
630 popvar(){
631     for pvar in $*; do
632         eval level=\${${pvar}_level:-0}
633         test $level = 0 && continue
634         eval level=$(($level-1))
635         eval $pvar="\${${pvar}_${level}}"
636         eval ${pvar}_level=$level
637         eval unset ${pvar}_${level}
638     done
639 }
640
641 request(){
642     for var in $*; do
643         eval ${var}_requested=yes
644         eval $var=
645     done
646 }
647
648 enable(){
649     set_all yes $*
650 }
651
652 disable(){
653     set_all no $*
654 }
655
656 enable_weak(){
657     set_weak yes $*
658 }
659
660 disable_weak(){
661     set_weak no $*
662 }
663
664 enable_sanitized(){
665     for var; do
666         enable $(sanitize_var_name $var)
667     done
668 }
669
670 disable_sanitized(){
671     for var; do
672         disable $(sanitize_var_name $var)
673     done
674 }
675
676 do_enable_deep(){
677     for var; do
678         enabled $var && continue
679         set -- $var
680         eval enable_deep \$${var}_select
681         var=$1
682         eval enable_deep_weak \$${var}_suggest
683     done
684 }
685
686 enable_deep(){
687     do_enable_deep $*
688     enable $*
689 }
690
691 enable_deep_weak(){
692     for var; do
693         disabled $var && continue
694         set -- $var
695         do_enable_deep $var
696         var=$1
697         enable_weak $var
698     done
699 }
700
701 requested(){
702     test "${1#!}" = "$1" && op="=" || op="!="
703     eval test "x\$${1#!}_requested" $op "xyes"
704 }
705
706 enabled(){
707     test "${1#!}" = "$1" && op="=" || op="!="
708     eval test "x\$${1#!}" $op "xyes"
709 }
710
711 disabled(){
712     test "${1#!}" = "$1" && op="=" || op="!="
713     eval test "x\$${1#!}" $op "xno"
714 }
715
716 enabled_all(){
717     for opt; do
718         enabled $opt || return 1
719     done
720 }
721
722 disabled_all(){
723     for opt; do
724         disabled $opt || return 1
725     done
726 }
727
728 enabled_any(){
729     for opt; do
730         enabled $opt && return 0
731     done
732 }
733
734 disabled_any(){
735     for opt; do
736         disabled $opt && return 0
737     done
738     return 1
739 }
740
741 set_default(){
742     for opt; do
743         eval : \${$opt:=\$${opt}_default}
744     done
745 }
746
747 is_in(){
748     value=$1
749     shift
750     for var in $*; do
751         [ $var = $value ] && return 0
752     done
753     return 1
754 }
755
756 # The cfg loop is very hot (several thousands iterations), and in bash also
757 # potentialy quite slow. Try to abort the iterations early, preferably without
758 # calling functions. 70%+ of the time cfg is already done or without deps.
759 check_deps(){
760     for cfg; do
761         eval [ x\$${cfg}_checking = xdone ] && continue
762         eval [ x\$${cfg}_checking = xinprogress ] && die "Circular dependency for $cfg."
763
764         eval "
765         dep_all=\$${cfg}_deps
766         dep_any=\$${cfg}_deps_any
767         dep_con=\$${cfg}_conflict
768         dep_sel=\$${cfg}_select
769         dep_sgs=\$${cfg}_suggest
770         dep_ifa=\$${cfg}_if
771         dep_ifn=\$${cfg}_if_any
772         "
773
774         # most of the time here $cfg has no deps - avoid costly no-op work
775         if [ "$dep_all$dep_any$dep_con$dep_sel$dep_sgs$dep_ifa$dep_ifn" ]; then
776             eval ${cfg}_checking=inprogress
777
778             set -- $cfg "$dep_all" "$dep_any" "$dep_con" "$dep_sel" "$dep_sgs" "$dep_ifa" "$dep_ifn"
779             check_deps $dep_all $dep_any $dep_con $dep_sel $dep_sgs $dep_ifa $dep_ifn
780             cfg=$1; dep_all=$2; dep_any=$3; dep_con=$4; dep_sel=$5 dep_sgs=$6; dep_ifa=$7; dep_ifn=$8
781
782             [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
783             [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
784             enabled_all  $dep_all || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but not all dependencies are satisfied: $dep_all"; }
785             enabled_any  $dep_any || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but not any dependency is satisfied: $dep_any"; }
786             disabled_all $dep_con || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but some conflicting dependencies are unsatisfied: $dep_con"; }
787             disabled_any $dep_sel && { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but some selected dependency is unsatisfied: $dep_sel"; }
788
789             enabled $cfg && enable_deep_weak $dep_sel $dep_sgs
790
791             for dep in $dep_all $dep_any $dep_sel $dep_sgs; do
792                 # filter out library deps, these do not belong in extralibs
793                 is_in $dep $LIBRARY_LIST && continue
794                 enabled $dep && eval append ${cfg}_extralibs ${dep}_extralibs
795             done
796         fi
797
798         eval ${cfg}_checking=done
799     done
800 }
801
802 print_config(){
803     pfx=$1
804     files=$2
805     shift 2
806     map 'eval echo "$v \${$v:-no}"' "$@" |
807     awk "BEGIN { split(\"$files\", files) }
808         {
809             c = \"$pfx\" toupper(\$1);
810             v = \$2;
811             sub(/yes/, 1, v);
812             sub(/no/,  0, v);
813             for (f in files) {
814                 file = files[f];
815                 if (file ~ /\\.h\$/) {
816                     printf(\"#define %s %d\\n\", c, v) >>file;
817                 } else if (file ~ /\\.asm\$/) {
818                     printf(\"%%define %s %d\\n\", c, v) >>file;
819                 } else if (file ~ /\\.mak\$/) {
820                     n = -v ? \"\" : \"!\";
821                     printf(\"%s%s=yes\\n\", n, c) >>file;
822                 } else if (file ~ /\\.texi\$/) {
823                     pre = -v ? \"\" : \"@c \";
824                     yesno = \$2;
825                     c2 = tolower(c);
826                     gsub(/_/, \"-\", c2);
827                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
828                 }
829             }
830         }"
831 }
832
833 print_enabled(){
834     suf=$1
835     shift
836     for v; do
837         enabled $v && printf "%s\n" ${v%$suf}
838     done
839 }
840
841 append(){
842     var=$1
843     shift
844     eval "$var=\"\$$var $*\""
845 }
846
847 prepend(){
848     var=$1
849     shift
850     eval "$var=\"$* \$$var\""
851 }
852
853 reverse () {
854     eval '
855         reverse_out=
856         for v in $'$1'; do
857             reverse_out="$v $reverse_out"
858         done
859         '$1'=$reverse_out
860     '
861 }
862
863 # keeps the last occurence of each non-unique item
864 unique(){
865     unique_out=
866     eval unique_in=\$$1
867     reverse unique_in
868     for v in $unique_in; do
869         # " $unique_out" +space such that every item is surrounded with spaces
870         case " $unique_out" in *" $v "*) continue; esac  # already in list
871         unique_out="$unique_out$v "
872     done
873     reverse unique_out
874     eval $1=\$unique_out
875 }
876
877 resolve(){
878     resolve_out=
879     eval resolve_in=\$$1
880     for v in $resolve_in; do
881         eval 'resolve_out="$resolve_out$'$v' "'
882     done
883     eval $1=\$resolve_out
884 }
885
886 add_cppflags(){
887     append CPPFLAGS "$@"
888 }
889
890 add_cflags(){
891     append CFLAGS $($cflags_filter "$@")
892 }
893
894 add_cflags_headers(){
895     append CFLAGS_HEADERS $($cflags_filter "$@")
896 }
897
898 add_cxxflags(){
899     append CXXFLAGS $($cflags_filter "$@")
900 }
901
902 add_objcflags(){
903     append OBJCFLAGS $($objcflags_filter "$@")
904 }
905
906 add_asflags(){
907     append ASFLAGS $($asflags_filter "$@")
908 }
909
910 add_ldflags(){
911     append LDFLAGS $($ldflags_filter "$@")
912 }
913
914 add_ldexeflags(){
915     append LDEXEFLAGS $($ldflags_filter "$@")
916 }
917
918 add_ldsoflags(){
919     append LDSOFLAGS $($ldflags_filter "$@")
920 }
921
922 add_extralibs(){
923     prepend extralibs $($ldflags_filter "$@")
924 }
925
926 add_stripflags(){
927     append ASMSTRIPFLAGS "$@"
928 }
929
930 add_host_cppflags(){
931     append host_cppflags "$@"
932 }
933
934 add_host_cflags(){
935     append host_cflags $($host_cflags_filter "$@")
936 }
937
938 add_host_ldflags(){
939     append host_ldflags $($host_ldflags_filter "$@")
940 }
941
942 add_compat(){
943     append compat_objs $1
944     shift
945     map 'add_cppflags -D$v' "$@"
946 }
947
948 test_cmd(){
949     log "$@"
950     "$@" >> $logfile 2>&1
951 }
952
953 test_stat(){
954     log test_stat "$@"
955     stat "$1" >> $logfile 2>&1
956 }
957
958 cc_e(){
959     eval printf '%s\\n' $CC_E
960 }
961
962 cc_o(){
963     eval printf '%s\\n' $CC_O
964 }
965
966 as_o(){
967     eval printf '%s\\n' $AS_O
968 }
969
970 x86asm_o(){
971     eval printf '%s\\n' $X86ASM_O
972 }
973
974 ld_o(){
975     eval printf '%s\\n' $LD_O
976 }
977
978 hostcc_e(){
979     eval printf '%s\\n' $HOSTCC_E
980 }
981
982 hostcc_o(){
983     eval printf '%s\\n' $HOSTCC_O
984 }
985
986 test_cc(){
987     log test_cc "$@"
988     cat > $TMPC
989     log_file $TMPC
990     test_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
991 }
992
993 test_cxx(){
994     log test_cxx "$@"
995     cat > $TMPCPP
996     log_file $TMPCPP
997     test_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
998 }
999
1000 test_objcc(){
1001     log test_objcc "$@"
1002     cat > $TMPM
1003     log_file $TMPM
1004     test_cmd $objcc -Werror=missing-prototypes $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPM
1005 }
1006
1007 test_cpp(){
1008     log test_cpp "$@"
1009     cat > $TMPC
1010     log_file $TMPC
1011     test_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
1012 }
1013
1014 test_as(){
1015     log test_as "$@"
1016     cat > $TMPS
1017     log_file $TMPS
1018     test_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
1019 }
1020
1021 test_x86asm(){
1022     log test_x86asm "$@"
1023     echo "$1" > $TMPASM
1024     log_file $TMPASM
1025     shift
1026     test_cmd $x86asmexe $X86ASMFLAGS -Werror "$@" $(x86asm_o $TMPO) $TMPASM
1027 }
1028
1029 check_cmd(){
1030     log check_cmd "$@"
1031     cmd=$1
1032     disabled $cmd && return
1033     disable $cmd
1034     test_cmd $@ && enable $cmd
1035 }
1036
1037 check_as(){
1038     log check_as "$@"
1039     name=$1
1040     code=$2
1041     shift 2
1042     disable $name
1043     test_as $@ <<EOF && enable $name
1044 $code
1045 EOF
1046 }
1047
1048 check_inline_asm(){
1049     log check_inline_asm "$@"
1050     name="$1"
1051     code="$2"
1052     shift 2
1053     disable $name
1054     test_cc "$@" <<EOF && enable $name
1055 void foo(void){ __asm__ volatile($code); }
1056 EOF
1057 }
1058
1059 check_inline_asm_flags(){
1060     log check_inline_asm_flags "$@"
1061     name="$1"
1062     code="$2"
1063     flags=''
1064     shift 2
1065     while [ "$1" != "" ]; do
1066       append flags $1
1067       shift
1068     done;
1069     disable $name
1070     cat > $TMPC <<EOF
1071 void foo(void){ __asm__ volatile($code); }
1072 EOF
1073     log_file $TMPC
1074     test_cmd $cc $CPPFLAGS $CFLAGS $flags "$@" $CC_C $(cc_o $TMPO) $TMPC &&
1075     enable $name && add_cflags $flags && add_asflags $flags && add_ldflags $flags
1076 }
1077
1078 check_insn(){
1079     log check_insn "$@"
1080     check_inline_asm ${1}_inline "\"$2\""
1081     check_as ${1}_external "$2"
1082 }
1083
1084 check_x86asm(){
1085     log check_x86asm "$@"
1086     name=$1
1087     shift
1088     disable $name
1089     test_x86asm "$@" && enable $name
1090 }
1091
1092 test_ld(){
1093     log test_ld "$@"
1094     type=$1
1095     shift 1
1096     flags=$(filter_out '-l*|*.so' $@)
1097     libs=$(filter '-l*|*.so' $@)
1098     test_$type $($cflags_filter $flags) || return
1099     flags=$($ldflags_filter $flags)
1100     libs=$($ldflags_filter $libs)
1101     test_cmd $ld $LDFLAGS $LDEXEFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
1102 }
1103
1104 check_ld(){
1105     log check_ld "$@"
1106     type=$1
1107     name=$2
1108     shift 2
1109     disable $name
1110     test_ld $type $@ && enable $name
1111 }
1112
1113 print_include(){
1114     hdr=$1
1115     test "${hdr%.h}" = "${hdr}" &&
1116         echo "#include $hdr"    ||
1117         echo "#include <$hdr>"
1118 }
1119
1120 test_code(){
1121     log test_code "$@"
1122     check=$1
1123     headers=$2
1124     code=$3
1125     shift 3
1126     {
1127         for hdr in $headers; do
1128             print_include $hdr
1129         done
1130         echo "int main(void) { $code; return 0; }"
1131     } | test_$check "$@"
1132 }
1133
1134 check_cppflags(){
1135     log check_cppflags "$@"
1136     test_cpp "$@" <<EOF && append CPPFLAGS "$@"
1137 #include <stdlib.h>
1138 EOF
1139 }
1140
1141 test_cflags(){
1142     log test_cflags "$@"
1143     set -- $($cflags_filter "$@")
1144     test_cc "$@" <<EOF
1145 int x;
1146 EOF
1147 }
1148
1149 check_cflags(){
1150     log check_cflags "$@"
1151     test_cflags "$@" && add_cflags "$@"
1152 }
1153
1154 check_cxxflags(){
1155     log check_cxxflags "$@"
1156     set -- $($cflags_filter "$@")
1157     test_cxx "$@" <<EOF && append CXXFLAGS "$@"
1158 int x;
1159 EOF
1160 }
1161
1162 test_objcflags(){
1163     log test_objcflags "$@"
1164     set -- $($objcflags_filter "$@")
1165     test_objcc "$@" <<EOF
1166 int x;
1167 EOF
1168 }
1169
1170 check_objcflags(){
1171     log check_objcflags "$@"
1172     test_objcflags "$@" && add_objcflags "$@"
1173 }
1174
1175 test_ldflags(){
1176     log test_ldflags "$@"
1177     set -- $($ldflags_filter "$@")
1178     test_ld "cc" "$@" <<EOF
1179 int main(void){ return 0; }
1180 EOF
1181 }
1182
1183 check_ldflags(){
1184     log check_ldflags "$@"
1185     test_ldflags "$@" && add_ldflags "$@"
1186 }
1187
1188 test_stripflags(){
1189     log test_stripflags "$@"
1190     # call test_cc to get a fresh TMPO
1191     test_cc <<EOF
1192 int main(void) { return 0; }
1193 EOF
1194     test_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
1195 }
1196
1197 check_stripflags(){
1198     log check_stripflags "$@"
1199     test_stripflags "$@" && add_stripflags "$@"
1200 }
1201
1202 check_headers(){
1203     log check_headers "$@"
1204     headers=$1
1205     shift
1206     disable_sanitized $headers
1207     {
1208         for hdr in $headers; do
1209             print_include $hdr
1210         done
1211         echo "int x;"
1212     } | test_cpp "$@" && enable_sanitized $headers
1213 }
1214
1215 check_header_objcc(){
1216     log check_header_objcc "$@"
1217     rm -f -- "$TMPO"
1218     header=$1
1219     shift
1220     disable_sanitized $header
1221     {
1222        echo "#include <$header>"
1223        echo "int main(void) { return 0; }"
1224     } | test_objcc && test_stat "$TMPO" && enable_sanitized $header
1225 }
1226
1227 check_apple_framework(){
1228     log check_apple_framework "$@"
1229     framework="$1"
1230     name="$(tolower $framework)"
1231     header="${framework}/${framework}.h"
1232     disable $name
1233     check_header_objcc $header &&
1234         enable $name && eval ${name}_extralibs='"-framework $framework"'
1235 }
1236
1237 check_func(){
1238     log check_func "$@"
1239     func=$1
1240     shift
1241     disable $func
1242     test_ld "cc" "$@" <<EOF && enable $func
1243 extern int $func();
1244 int main(void){ $func(); }
1245 EOF
1246 }
1247
1248 check_complexfunc(){
1249     log check_complexfunc "$@"
1250     func=$1
1251     narg=$2
1252     shift 2
1253     test $narg = 2 && args="f, g" || args="f * I"
1254     disable $func
1255     test_ld "cc" "$@" <<EOF && enable $func
1256 #include <complex.h>
1257 #include <math.h>
1258 float foo(complex float f, complex float g) { return $func($args); }
1259 int main(void){ return (int) foo; }
1260 EOF
1261 }
1262
1263 check_mathfunc(){
1264     log check_mathfunc "$@"
1265     func=$1
1266     narg=$2
1267     shift 2
1268     test $narg = 2 && args="f, g" || args="f"
1269     disable $func
1270     test_ld "cc" "$@" <<EOF && enable $func
1271 #include <math.h>
1272 float foo(float f, float g) { return $func($args); }
1273 int main(void){ return (int) foo; }
1274 EOF
1275 }
1276
1277 check_func_headers(){
1278     log check_func_headers "$@"
1279     headers=$1
1280     funcs=$2
1281     shift 2
1282     {
1283         for hdr in $headers; do
1284             print_include $hdr
1285         done
1286         echo "#include <stdint.h>"
1287         for func in $funcs; do
1288             echo "long check_$func(void) { return (long) $func; }"
1289         done
1290         echo "int main(void) { int ret = 0;"
1291         # LTO could optimize out the test functions without this
1292         for func in $funcs; do
1293             echo " ret |= ((intptr_t)check_$func) & 0xFFFF;"
1294         done
1295         echo "return ret; }"
1296     } | test_ld "cc" "$@" && enable $funcs && enable_sanitized $headers
1297 }
1298
1299 check_class_headers_cpp(){
1300     log check_class_headers_cpp "$@"
1301     headers=$1
1302     classes=$2
1303     shift 2
1304     {
1305         for hdr in $headers; do
1306             echo "#include <$hdr>"
1307         done
1308         echo "int main(void) { "
1309         i=1
1310         for class in $classes; do
1311             echo "$class obj$i;"
1312             i=$(expr $i + 1)
1313         done
1314         echo "return 0; }"
1315     } | test_ld "cxx" "$@" && enable $funcs && enable_sanitized $headers
1316 }
1317
1318 test_cpp_condition(){
1319     log test_cpp_condition "$@"
1320     header=$1
1321     condition=$2
1322     shift 2
1323     test_cpp "$@" <<EOF
1324 #include <$header>
1325 #if !($condition)
1326 #error "unsatisfied condition: $condition"
1327 #endif
1328 EOF
1329 }
1330
1331 check_cpp_condition(){
1332     log check_cpp_condition "$@"
1333     name=$1
1334     shift 1
1335     disable $name
1336     test_cpp_condition "$@" && enable $name
1337 }
1338
1339 test_cflags_cc(){
1340     log test_cflags_cc "$@"
1341     flags=$1
1342     header=$2
1343     condition=$3
1344     shift 3
1345     set -- $($cflags_filter "$flags")
1346     test_cc "$@" <<EOF
1347 #include <$header>
1348 #if !($condition)
1349 #error "unsatisfied condition: $condition"
1350 #endif
1351 EOF
1352 }
1353
1354 check_lib(){
1355     log check_lib "$@"
1356     name="$1"
1357     headers="$2"
1358     funcs="$3"
1359     shift 3
1360     disable $name
1361     check_func_headers "$headers" "$funcs" "$@" &&
1362         enable $name && eval ${name}_extralibs="\$@"
1363 }
1364
1365 check_lib_cpp(){
1366     log check_lib_cpp "$@"
1367     name="$1"
1368     headers="$2"
1369     classes="$3"
1370     shift 3
1371     disable $name
1372     check_class_headers_cpp "$headers" "$classes" "$@" &&
1373         enable $name && eval ${name}_extralibs="\$@"
1374 }
1375
1376 test_pkg_config(){
1377     log test_pkg_config "$@"
1378     name="$1"
1379     pkg_version="$2"
1380     pkg="${2%% *}"
1381     headers="$3"
1382     funcs="$4"
1383     shift 4
1384     disable $name
1385     test_cmd $pkg_config --exists --print-errors $pkg_version || return
1386     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1387     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1388     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1389         enable $name &&
1390         set_sanitized "${name}_cflags"    $pkg_cflags &&
1391         set_sanitized "${name}_extralibs" $pkg_libs
1392 }
1393
1394 check_pkg_config(){
1395     log check_pkg_config "$@"
1396     name="$1"
1397     test_pkg_config "$@" &&
1398         eval add_cflags \$${name}_cflags
1399 }
1400
1401 test_exec(){
1402     test_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1403 }
1404
1405 check_exec_crash(){
1406     log check_exec_crash "$@"
1407     code=$(cat)
1408
1409     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1410     # are safe but may not be available everywhere.  Thus we use
1411     # raise(SIGTERM) instead.  The check is run in a subshell so we
1412     # can redirect the "Terminated" message from the shell.  SIGBUS
1413     # is not defined by standard C so it is used conditionally.
1414
1415     (test_exec "$@") >> $logfile 2>&1 <<EOF
1416 #include <signal.h>
1417 static void sighandler(int sig){
1418     raise(SIGTERM);
1419 }
1420 int foo(void){
1421     $code
1422 }
1423 int (*func_ptr)(void) = foo;
1424 int main(void){
1425     signal(SIGILL, sighandler);
1426     signal(SIGFPE, sighandler);
1427     signal(SIGSEGV, sighandler);
1428 #ifdef SIGBUS
1429     signal(SIGBUS, sighandler);
1430 #endif
1431     return func_ptr();
1432 }
1433 EOF
1434 }
1435
1436 check_type(){
1437     log check_type "$@"
1438     headers=$1
1439     type=$2
1440     shift 2
1441     disable_sanitized "$type"
1442     test_code cc "$headers" "$type v" "$@" && enable_sanitized "$type"
1443 }
1444
1445 check_struct(){
1446     log check_struct "$@"
1447     headers=$1
1448     struct=$2
1449     member=$3
1450     shift 3
1451     disable_sanitized "${struct}_${member}"
1452     test_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1453         enable_sanitized "${struct}_${member}"
1454 }
1455
1456 check_builtin(){
1457     log check_builtin "$@"
1458     name=$1
1459     headers=$2
1460     builtin=$3
1461     shift 3
1462     disable "$name"
1463     test_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1464 }
1465
1466 check_compile_assert(){
1467     log check_compile_assert "$@"
1468     name=$1
1469     headers=$2
1470     condition=$3
1471     shift 3
1472     disable "$name"
1473     test_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1474 }
1475
1476 check_cc(){
1477     log check_cc "$@"
1478     name=$1
1479     shift
1480     disable "$name"
1481     test_code cc "$@" && enable "$name"
1482 }
1483
1484 require(){
1485     log require "$@"
1486     name_version="$1"
1487     name="${1%% *}"
1488     shift
1489     check_lib $name "$@" || die "ERROR: $name_version not found"
1490 }
1491
1492 require_cc(){
1493     log require_cc "$@"
1494     name="$1"
1495     check_cc "$@" || die "ERROR: $name failed"
1496 }
1497
1498 require_cpp(){
1499     name="$1"
1500     headers="$2"
1501     classes="$3"
1502     shift 3
1503     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1504 }
1505
1506 require_headers(){
1507     log require_headers "$@"
1508     headers="$1"
1509     check_headers "$@" || die "ERROR: $headers not found"
1510 }
1511
1512 require_cpp_condition(){
1513     log require_cpp_condition "$@"
1514     condition="$3"
1515     check_cpp_condition "$@" || die "ERROR: $condition not satisfied"
1516 }
1517
1518 require_pkg_config(){
1519     log require_pkg_config "$@"
1520     pkg_version="$2"
1521     check_pkg_config "$@" || die "ERROR: $pkg_version not found using pkg-config$pkg_config_fail_message"
1522 }
1523
1524 test_host_cc(){
1525     log test_host_cc "$@"
1526     cat > $TMPC
1527     log_file $TMPC
1528     test_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1529 }
1530
1531 test_host_cpp(){
1532     log test_host_cpp "$@"
1533     cat > $TMPC
1534     log_file $TMPC
1535     test_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1536 }
1537
1538 check_host_cppflags(){
1539     log check_host_cppflags "$@"
1540     test_host_cpp "$@" <<EOF && append host_cppflags "$@"
1541 #include <stdlib.h>
1542 EOF
1543 }
1544
1545 check_host_cflags(){
1546     log check_host_cflags "$@"
1547     set -- $($host_cflags_filter "$@")
1548     test_host_cc "$@" <<EOF && append host_cflags "$@"
1549 int x;
1550 EOF
1551 }
1552
1553 test_host_cpp_condition(){
1554     log test_host_cpp_condition "$@"
1555     header=$1
1556     condition=$2
1557     shift 2
1558     test_host_cpp "$@" <<EOF
1559 #include <$header>
1560 #if !($condition)
1561 #error "unsatisfied condition: $condition"
1562 #endif
1563 EOF
1564 }
1565
1566 check_host_cpp_condition(){
1567     log check_host_cpp_condition "$@"
1568     name=$1
1569     shift 1
1570     disable $name
1571     test_host_cpp_condition "$@" && enable $name
1572 }
1573
1574 cp_if_changed(){
1575     cmp -s "$1" "$2" && { test "$quiet" != "yes" && echo "$2 is unchanged"; } && return
1576     mkdir -p "$(dirname $2)"
1577     cp -f "$1" "$2"
1578 }
1579
1580 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1581 # system-dependent things.
1582
1583 AVCODEC_COMPONENTS="
1584     bsfs
1585     decoders
1586     encoders
1587     hwaccels
1588     parsers
1589 "
1590
1591 AVDEVICE_COMPONENTS="
1592     indevs
1593     outdevs
1594 "
1595
1596 AVFILTER_COMPONENTS="
1597     filters
1598 "
1599
1600 AVFORMAT_COMPONENTS="
1601     demuxers
1602     muxers
1603     protocols
1604 "
1605
1606 COMPONENT_LIST="
1607     $AVCODEC_COMPONENTS
1608     $AVDEVICE_COMPONENTS
1609     $AVFILTER_COMPONENTS
1610     $AVFORMAT_COMPONENTS
1611 "
1612
1613 EXAMPLE_LIST="
1614     avio_dir_cmd_example
1615     avio_reading_example
1616     decode_audio_example
1617     decode_video_example
1618     demuxing_decoding_example
1619     encode_audio_example
1620     encode_video_example
1621     extract_mvs_example
1622     filter_audio_example
1623     filtering_audio_example
1624     filtering_video_example
1625     http_multiclient_example
1626     hw_decode_example
1627     metadata_example
1628     muxing_example
1629     qsvdec_example
1630     remuxing_example
1631     resampling_audio_example
1632     scaling_video_example
1633     transcode_aac_example
1634     transcoding_example
1635     vaapi_encode_example
1636     vaapi_transcode_example
1637 "
1638
1639 EXTERNAL_AUTODETECT_LIBRARY_LIST="
1640     alsa
1641     appkit
1642     avfoundation
1643     bzlib
1644     coreimage
1645     iconv
1646     libxcb
1647     libxcb_shm
1648     libxcb_shape
1649     libxcb_xfixes
1650     lzma
1651     schannel
1652     sdl2
1653     securetransport
1654     sndio
1655     xlib
1656     zlib
1657 "
1658
1659 EXTERNAL_LIBRARY_GPL_LIST="
1660     avisynth
1661     frei0r
1662     libcdio
1663     libdavs2
1664     librubberband
1665     libvidstab
1666     libx264
1667     libx265
1668     libxavs
1669     libxvid
1670 "
1671
1672 EXTERNAL_LIBRARY_NONFREE_LIST="
1673     decklink
1674     libndi_newtek
1675     libfdk_aac
1676     openssl
1677     libtls
1678 "
1679
1680 EXTERNAL_LIBRARY_VERSION3_LIST="
1681     gmp
1682     liblensfun
1683     libopencore_amrnb
1684     libopencore_amrwb
1685     libvmaf
1686     libvo_amrwbenc
1687     mbedtls
1688     rkmpp
1689 "
1690
1691 EXTERNAL_LIBRARY_GPLV3_LIST="
1692     libsmbclient
1693 "
1694
1695 EXTERNAL_LIBRARY_LIST="
1696     $EXTERNAL_LIBRARY_GPL_LIST
1697     $EXTERNAL_LIBRARY_NONFREE_LIST
1698     $EXTERNAL_LIBRARY_VERSION3_LIST
1699     $EXTERNAL_LIBRARY_GPLV3_LIST
1700     chromaprint
1701     gcrypt
1702     gnutls
1703     jni
1704     ladspa
1705     libaom
1706     libass
1707     libbluray
1708     libbs2b
1709     libcaca
1710     libcelt
1711     libcodec2
1712     libdc1394
1713     libdrm
1714     libflite
1715     libfontconfig
1716     libfreetype
1717     libfribidi
1718     libgme
1719     libgsm
1720     libiec61883
1721     libilbc
1722     libjack
1723     libkvazaar
1724     libmodplug
1725     libmp3lame
1726     libmysofa
1727     libopencv
1728     libopenh264
1729     libopenjpeg
1730     libopenmpt
1731     libopus
1732     libpulse
1733     librsvg
1734     librtmp
1735     libshine
1736     libsmbclient
1737     libsnappy
1738     libsoxr
1739     libspeex
1740     libsrt
1741     libssh
1742     libtensorflow
1743     libtesseract
1744     libtheora
1745     libtwolame
1746     libv4l2
1747     libvorbis
1748     libvpx
1749     libwavpack
1750     libwebp
1751     libxml2
1752     libzimg
1753     libzmq
1754     libzvbi
1755     lv2
1756     mediacodec
1757     openal
1758     opengl
1759     vapoursynth
1760 "
1761
1762 HWACCEL_AUTODETECT_LIBRARY_LIST="
1763     amf
1764     audiotoolbox
1765     crystalhd
1766     cuda
1767     cuvid
1768     d3d11va
1769     dxva2
1770     ffnvcodec
1771     nvdec
1772     nvenc
1773     vaapi
1774     vdpau
1775     videotoolbox
1776     v4l2_m2m
1777     xvmc
1778 "
1779
1780 # catchall list of things that require external libs to link
1781 EXTRALIBS_LIST="
1782     cpu_init
1783     cws2fws
1784 "
1785
1786 HWACCEL_LIBRARY_NONFREE_LIST="
1787     cuda_sdk
1788     libnpp
1789 "
1790
1791 HWACCEL_LIBRARY_LIST="
1792     $HWACCEL_LIBRARY_NONFREE_LIST
1793     libmfx
1794     mmal
1795     omx
1796     opencl
1797 "
1798
1799 DOCUMENT_LIST="
1800     doc
1801     htmlpages
1802     manpages
1803     podpages
1804     txtpages
1805 "
1806
1807 FEATURE_LIST="
1808     ftrapv
1809     gray
1810     hardcoded_tables
1811     omx_rpi
1812     runtime_cpudetect
1813     safe_bitstream_reader
1814     shared
1815     small
1816     static
1817     swscale_alpha
1818 "
1819
1820 # this list should be kept in linking order
1821 LIBRARY_LIST="
1822     avdevice
1823     avfilter
1824     swscale
1825     postproc
1826     avformat
1827     avcodec
1828     swresample
1829     avresample
1830     avutil
1831 "
1832
1833 LICENSE_LIST="
1834     gpl
1835     nonfree
1836     version3
1837 "
1838
1839 PROGRAM_LIST="
1840     ffplay
1841     ffprobe
1842     ffmpeg
1843 "
1844
1845 SUBSYSTEM_LIST="
1846     dct
1847     dwt
1848     error_resilience
1849     faan
1850     fast_unaligned
1851     fft
1852     lsp
1853     lzo
1854     mdct
1855     pixelutils
1856     network
1857     rdft
1858 "
1859
1860 # COMPONENT_LIST needs to come last to ensure correct dependency checking
1861 CONFIG_LIST="
1862     $DOCUMENT_LIST
1863     $EXAMPLE_LIST
1864     $EXTERNAL_LIBRARY_LIST
1865     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1866     $HWACCEL_LIBRARY_LIST
1867     $HWACCEL_AUTODETECT_LIBRARY_LIST
1868     $FEATURE_LIST
1869     $LICENSE_LIST
1870     $LIBRARY_LIST
1871     $PROGRAM_LIST
1872     $SUBSYSTEM_LIST
1873     autodetect
1874     fontconfig
1875     linux_perf
1876     memory_poisoning
1877     neon_clobber_test
1878     ossfuzz
1879     pic
1880     thumb
1881     valgrind_backtrace
1882     xmm_clobber_test
1883     $COMPONENT_LIST
1884 "
1885
1886 THREADS_LIST="
1887     pthreads
1888     os2threads
1889     w32threads
1890 "
1891
1892 ATOMICS_LIST="
1893     atomics_gcc
1894     atomics_suncc
1895     atomics_win32
1896 "
1897
1898 AUTODETECT_LIBS="
1899     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1900     $HWACCEL_AUTODETECT_LIBRARY_LIST
1901     $THREADS_LIST
1902 "
1903
1904 ARCH_LIST="
1905     aarch64
1906     alpha
1907     arm
1908     avr32
1909     avr32_ap
1910     avr32_uc
1911     bfin
1912     ia64
1913     m68k
1914     mips
1915     mips64
1916     parisc
1917     ppc
1918     ppc64
1919     s390
1920     sh4
1921     sparc
1922     sparc64
1923     tilegx
1924     tilepro
1925     tomi
1926     x86
1927     x86_32
1928     x86_64
1929 "
1930
1931 ARCH_EXT_LIST_ARM="
1932     armv5te
1933     armv6
1934     armv6t2
1935     armv8
1936     neon
1937     vfp
1938     vfpv3
1939     setend
1940 "
1941
1942 ARCH_EXT_LIST_MIPS="
1943     mipsfpu
1944     mips32r2
1945     mips32r5
1946     mips64r2
1947     mips32r6
1948     mips64r6
1949     mipsdsp
1950     mipsdspr2
1951     msa
1952 "
1953
1954 ARCH_EXT_LIST_LOONGSON="
1955     loongson2
1956     loongson3
1957     mmi
1958 "
1959
1960 ARCH_EXT_LIST_X86_SIMD="
1961     aesni
1962     amd3dnow
1963     amd3dnowext
1964     avx
1965     avx2
1966     avx512
1967     fma3
1968     fma4
1969     mmx
1970     mmxext
1971     sse
1972     sse2
1973     sse3
1974     sse4
1975     sse42
1976     ssse3
1977     xop
1978 "
1979
1980 ARCH_EXT_LIST_PPC="
1981     altivec
1982     dcbzl
1983     ldbrx
1984     power8
1985     ppc4xx
1986     vsx
1987 "
1988
1989 ARCH_EXT_LIST_X86="
1990     $ARCH_EXT_LIST_X86_SIMD
1991     cpunop
1992     i686
1993 "
1994
1995 ARCH_EXT_LIST="
1996     $ARCH_EXT_LIST_ARM
1997     $ARCH_EXT_LIST_PPC
1998     $ARCH_EXT_LIST_X86
1999     $ARCH_EXT_LIST_MIPS
2000     $ARCH_EXT_LIST_LOONGSON
2001 "
2002
2003 ARCH_FEATURES="
2004     aligned_stack
2005     fast_64bit
2006     fast_clz
2007     fast_cmov
2008     local_aligned
2009     simd_align_16
2010     simd_align_32
2011     simd_align_64
2012 "
2013
2014 BUILTIN_LIST="
2015     atomic_cas_ptr
2016     machine_rw_barrier
2017     MemoryBarrier
2018     mm_empty
2019     rdtsc
2020     sem_timedwait
2021     sync_val_compare_and_swap
2022 "
2023 HAVE_LIST_CMDLINE="
2024     inline_asm
2025     symver
2026     x86asm
2027 "
2028
2029 HAVE_LIST_PUB="
2030     bigendian
2031     fast_unaligned
2032 "
2033
2034 HEADERS_LIST="
2035     arpa_inet_h
2036     asm_types_h
2037     cdio_paranoia_h
2038     cdio_paranoia_paranoia_h
2039     cuda_h
2040     dispatch_dispatch_h
2041     dev_bktr_ioctl_bt848_h
2042     dev_bktr_ioctl_meteor_h
2043     dev_ic_bt8xx_h
2044     dev_video_bktr_ioctl_bt848_h
2045     dev_video_meteor_ioctl_meteor_h
2046     direct_h
2047     dirent_h
2048     dxgidebug_h
2049     dxva_h
2050     ES2_gl_h
2051     gsm_h
2052     io_h
2053     linux_perf_event_h
2054     machine_ioctl_bt848_h
2055     machine_ioctl_meteor_h
2056     malloc_h
2057     opencv2_core_core_c_h
2058     OpenGL_gl3_h
2059     poll_h
2060     sys_param_h
2061     sys_resource_h
2062     sys_select_h
2063     sys_soundcard_h
2064     sys_time_h
2065     sys_un_h
2066     sys_videoio_h
2067     termios_h
2068     udplite_h
2069     unistd_h
2070     valgrind_valgrind_h
2071     windows_h
2072     winsock2_h
2073 "
2074
2075 INTRINSICS_LIST="
2076     intrinsics_neon
2077 "
2078
2079 COMPLEX_FUNCS="
2080     cabs
2081     cexp
2082 "
2083
2084 MATH_FUNCS="
2085     atanf
2086     atan2f
2087     cbrt
2088     cbrtf
2089     copysign
2090     cosf
2091     erf
2092     exp2
2093     exp2f
2094     expf
2095     hypot
2096     isfinite
2097     isinf
2098     isnan
2099     ldexpf
2100     llrint
2101     llrintf
2102     log2
2103     log2f
2104     log10f
2105     lrint
2106     lrintf
2107     powf
2108     rint
2109     round
2110     roundf
2111     sinf
2112     trunc
2113     truncf
2114 "
2115
2116 SYSTEM_FEATURES="
2117     dos_paths
2118     libc_msvcrt
2119     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
2120     section_data_rel_ro
2121     threads
2122     uwp
2123     winrt
2124 "
2125
2126 SYSTEM_FUNCS="
2127     access
2128     aligned_malloc
2129     arc4random
2130     clock_gettime
2131     closesocket
2132     CommandLineToArgvW
2133     fcntl
2134     getaddrinfo
2135     gethrtime
2136     getopt
2137     GetProcessAffinityMask
2138     GetProcessMemoryInfo
2139     GetProcessTimes
2140     getrusage
2141     GetSystemTimeAsFileTime
2142     gettimeofday
2143     glob
2144     glXGetProcAddress
2145     gmtime_r
2146     inet_aton
2147     isatty
2148     kbhit
2149     localtime_r
2150     lstat
2151     lzo1x_999_compress
2152     mach_absolute_time
2153     MapViewOfFile
2154     memalign
2155     mkstemp
2156     mmap
2157     mprotect
2158     nanosleep
2159     PeekNamedPipe
2160     posix_memalign
2161     pthread_cancel
2162     sched_getaffinity
2163     SecItemImport
2164     SetConsoleTextAttribute
2165     SetConsoleCtrlHandler
2166     setmode
2167     setrlimit
2168     Sleep
2169     strerror_r
2170     sysconf
2171     sysctl
2172     usleep
2173     UTGetOSTypeFromString
2174     VirtualAlloc
2175     wglGetProcAddress
2176 "
2177
2178 SYSTEM_LIBRARIES="
2179     bcrypt
2180     vaapi_drm
2181     vaapi_x11
2182     vdpau_x11
2183 "
2184
2185 TOOLCHAIN_FEATURES="
2186     as_arch_directive
2187     as_dn_directive
2188     as_fpu_directive
2189     as_func
2190     as_object_arch
2191     asm_mod_q
2192     blocks_extension
2193     ebp_available
2194     ebx_available
2195     gnu_as
2196     gnu_windres
2197     ibm_asm
2198     inline_asm_direct_symbol_refs
2199     inline_asm_labels
2200     inline_asm_nonlocal_labels
2201     pragma_deprecated
2202     rsync_contimeout
2203     symver_asm_label
2204     symver_gnu_asm
2205     vfp_args
2206     xform_asm
2207     xmm_clobbers
2208 "
2209
2210 TYPES_LIST="
2211     kCMVideoCodecType_HEVC
2212     socklen_t
2213     struct_addrinfo
2214     struct_group_source_req
2215     struct_ip_mreq_source
2216     struct_ipv6_mreq
2217     struct_msghdr_msg_flags
2218     struct_pollfd
2219     struct_rusage_ru_maxrss
2220     struct_sctp_event_subscribe
2221     struct_sockaddr_in6
2222     struct_sockaddr_sa_len
2223     struct_sockaddr_storage
2224     struct_stat_st_mtim_tv_nsec
2225     struct_v4l2_frmivalenum_discrete
2226 "
2227
2228 HAVE_LIST="
2229     $ARCH_EXT_LIST
2230     $(add_suffix _external $ARCH_EXT_LIST)
2231     $(add_suffix _inline   $ARCH_EXT_LIST)
2232     $ARCH_FEATURES
2233     $BUILTIN_LIST
2234     $COMPLEX_FUNCS
2235     $HAVE_LIST_CMDLINE
2236     $HAVE_LIST_PUB
2237     $HEADERS_LIST
2238     $INTRINSICS_LIST
2239     $MATH_FUNCS
2240     $SYSTEM_FEATURES
2241     $SYSTEM_FUNCS
2242     $SYSTEM_LIBRARIES
2243     $THREADS_LIST
2244     $TOOLCHAIN_FEATURES
2245     $TYPES_LIST
2246     makeinfo
2247     makeinfo_html
2248     opencl_d3d11
2249     opencl_drm_arm
2250     opencl_drm_beignet
2251     opencl_dxva2
2252     opencl_vaapi_beignet
2253     opencl_vaapi_intel_media
2254     perl
2255     pod2man
2256     texi2html
2257 "
2258
2259 # options emitted with CONFIG_ prefix but not available on the command line
2260 CONFIG_EXTRA="
2261     aandcttables
2262     ac3dsp
2263     adts_header
2264     audio_frame_queue
2265     audiodsp
2266     blockdsp
2267     bswapdsp
2268     cabac
2269     cbs
2270     cbs_h264
2271     cbs_h265
2272     cbs_mpeg2
2273     cbs_vp9
2274     dirac_parse
2275     dnn
2276     dvprofile
2277     exif
2278     faandct
2279     faanidct
2280     fdctdsp
2281     flacdsp
2282     fmtconvert
2283     frame_thread_encoder
2284     g722dsp
2285     golomb
2286     gplv3
2287     h263dsp
2288     h264chroma
2289     h264dsp
2290     h264parse
2291     h264pred
2292     h264qpel
2293     hevcparse
2294     hpeldsp
2295     huffman
2296     huffyuvdsp
2297     huffyuvencdsp
2298     idctdsp
2299     iirfilter
2300     mdct15
2301     intrax8
2302     iso_media
2303     ividsp
2304     jpegtables
2305     lgplv3
2306     libx262
2307     llauddsp
2308     llviddsp
2309     llvidencdsp
2310     lpc
2311     lzf
2312     me_cmp
2313     mpeg_er
2314     mpegaudio
2315     mpegaudiodsp
2316     mpegaudioheader
2317     mpegvideo
2318     mpegvideoenc
2319     mss34dsp
2320     pixblockdsp
2321     qpeldsp
2322     qsv
2323     qsvdec
2324     qsvenc
2325     qsvvpp
2326     rangecoder
2327     riffdec
2328     riffenc
2329     rtpdec
2330     rtpenc_chain
2331     rv34dsp
2332     sinewin
2333     snappy
2334     srtp
2335     startcode
2336     texturedsp
2337     texturedspenc
2338     tpeldsp
2339     vaapi_1
2340     vaapi_encode
2341     vc1dsp
2342     videodsp
2343     vp3dsp
2344     vp56dsp
2345     vp8dsp
2346     wma_freqs
2347     wmv2dsp
2348 "
2349
2350 CMDLINE_SELECT="
2351     $ARCH_EXT_LIST
2352     $CONFIG_LIST
2353     $HAVE_LIST_CMDLINE
2354     $THREADS_LIST
2355     asm
2356     cross_compile
2357     debug
2358     extra_warnings
2359     logging
2360     lto
2361     optimizations
2362     rpath
2363     stripping
2364 "
2365
2366 PATHS_LIST="
2367     bindir
2368     datadir
2369     docdir
2370     incdir
2371     libdir
2372     mandir
2373     pkgconfigdir
2374     prefix
2375     shlibdir
2376     install_name_dir
2377 "
2378
2379 CMDLINE_SET="
2380     $PATHS_LIST
2381     ar
2382     arch
2383     as
2384     assert_level
2385     build_suffix
2386     cc
2387     objcc
2388     cpu
2389     cross_prefix
2390     custom_allocator
2391     cxx
2392     dep_cc
2393     doxygen
2394     env
2395     extra_version
2396     gas
2397     host_cc
2398     host_cflags
2399     host_extralibs
2400     host_ld
2401     host_ldflags
2402     host_os
2403     ignore_tests
2404     install
2405     ld
2406     ln_s
2407     logfile
2408     malloc_prefix
2409     nm
2410     optflags
2411     nvcc
2412     nvccflags
2413     pkg_config
2414     pkg_config_flags
2415     progs_suffix
2416     random_seed
2417     ranlib
2418     samples
2419     strip
2420     sws_max_filter_size
2421     sysinclude
2422     sysroot
2423     target_exec
2424     target_os
2425     target_path
2426     target_samples
2427     tempprefix
2428     toolchain
2429     valgrind
2430     x86asmexe
2431 "
2432
2433 CMDLINE_APPEND="
2434     extra_cflags
2435     extra_cxxflags
2436     extra_objcflags
2437     host_cppflags
2438 "
2439
2440 # code dependency declarations
2441
2442 # architecture extensions
2443
2444 armv5te_deps="arm"
2445 armv6_deps="arm"
2446 armv6t2_deps="arm"
2447 armv8_deps="aarch64"
2448 neon_deps_any="aarch64 arm"
2449 intrinsics_neon_deps="neon"
2450 vfp_deps_any="aarch64 arm"
2451 vfpv3_deps="vfp"
2452 setend_deps="arm"
2453
2454 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2455
2456 altivec_deps="ppc"
2457 dcbzl_deps="ppc"
2458 ldbrx_deps="ppc"
2459 ppc4xx_deps="ppc"
2460 vsx_deps="altivec"
2461 power8_deps="vsx"
2462
2463 loongson2_deps="mips"
2464 loongson3_deps="mips"
2465 mips32r2_deps="mips"
2466 mips32r5_deps="mips"
2467 mips32r6_deps="mips"
2468 mips64r2_deps="mips"
2469 mips64r6_deps="mips"
2470 mipsfpu_deps="mips"
2471 mipsdsp_deps="mips"
2472 mipsdspr2_deps="mips"
2473 mmi_deps="mips"
2474 msa_deps="mipsfpu"
2475
2476 cpunop_deps="i686"
2477 x86_64_select="i686"
2478 x86_64_suggest="fast_cmov"
2479
2480 amd3dnow_deps="mmx"
2481 amd3dnowext_deps="amd3dnow"
2482 i686_deps="x86"
2483 mmx_deps="x86"
2484 mmxext_deps="mmx"
2485 sse_deps="mmxext"
2486 sse2_deps="sse"
2487 sse3_deps="sse2"
2488 ssse3_deps="sse3"
2489 sse4_deps="ssse3"
2490 sse42_deps="sse4"
2491 aesni_deps="sse42"
2492 avx_deps="sse42"
2493 xop_deps="avx"
2494 fma3_deps="avx"
2495 fma4_deps="avx"
2496 avx2_deps="avx"
2497 avx512_deps="avx2"
2498
2499 mmx_external_deps="x86asm"
2500 mmx_inline_deps="inline_asm x86"
2501 mmx_suggest="mmx_external mmx_inline"
2502
2503 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2504     eval dep=\$${ext}_deps
2505     eval ${ext}_external_deps='"${dep}_external"'
2506     eval ${ext}_inline_deps='"${dep}_inline"'
2507     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2508 done
2509
2510 aligned_stack_if_any="aarch64 ppc x86"
2511 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2512 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2513 fast_unaligned_if_any="aarch64 ppc x86"
2514 simd_align_16_if_any="altivec neon sse"
2515 simd_align_32_if_any="avx"
2516 simd_align_64_if_any="avx512"
2517
2518 # system capabilities
2519 linux_perf_deps="linux_perf_event_h"
2520 symver_if_any="symver_asm_label symver_gnu_asm"
2521 valgrind_backtrace_conflict="optimizations"
2522 valgrind_backtrace_deps="valgrind_valgrind_h"
2523
2524 # threading support
2525 atomics_gcc_if="sync_val_compare_and_swap"
2526 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2527 atomics_win32_if="MemoryBarrier"
2528 atomics_native_if_any="$ATOMICS_LIST"
2529 w32threads_deps="atomics_native"
2530 threads_if_any="$THREADS_LIST"
2531
2532 # subsystems
2533 cbs_h264_select="cbs golomb"
2534 cbs_h265_select="cbs golomb"
2535 cbs_mpeg2_select="cbs"
2536 cbs_vp9_select="cbs"
2537 dct_select="rdft"
2538 dirac_parse_select="golomb"
2539 dnn_suggest="libtensorflow"
2540 error_resilience_select="me_cmp"
2541 faandct_deps="faan"
2542 faandct_select="fdctdsp"
2543 faanidct_deps="faan"
2544 faanidct_select="idctdsp"
2545 h264dsp_select="startcode"
2546 hevcparse_select="golomb"
2547 frame_thread_encoder_deps="encoders threads"
2548 intrax8_select="blockdsp idctdsp"
2549 mdct_select="fft"
2550 mdct15_select="fft"
2551 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2552 mpeg_er_select="error_resilience"
2553 mpegaudio_select="mpegaudiodsp mpegaudioheader"
2554 mpegaudiodsp_select="dct"
2555 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2556 mpegvideoenc_select="aandcttables me_cmp mpegvideo pixblockdsp qpeldsp"
2557 vc1dsp_select="h264chroma qpeldsp startcode"
2558 rdft_select="fft"
2559
2560 # decoders / encoders
2561 aac_decoder_select="adts_header mdct15 mdct sinewin"
2562 aac_fixed_decoder_select="adts_header mdct sinewin"
2563 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2564 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2565 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2566 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2567 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2568 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2569 adpcm_g722_decoder_select="g722dsp"
2570 adpcm_g722_encoder_select="g722dsp"
2571 aic_decoder_select="golomb idctdsp"
2572 alac_encoder_select="lpc"
2573 als_decoder_select="bswapdsp"
2574 amrnb_decoder_select="lsp"
2575 amrwb_decoder_select="lsp"
2576 amv_decoder_select="sp5x_decoder exif"
2577 amv_encoder_select="jpegtables mpegvideoenc"
2578 ape_decoder_select="bswapdsp llauddsp"
2579 apng_decoder_deps="zlib"
2580 apng_encoder_deps="zlib"
2581 apng_encoder_select="llvidencdsp"
2582 aptx_decoder_select="audio_frame_queue"
2583 aptx_encoder_select="audio_frame_queue"
2584 aptx_hd_decoder_select="audio_frame_queue"
2585 aptx_hd_encoder_select="audio_frame_queue"
2586 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2587 asv1_encoder_select="aandcttables bswapdsp fdctdsp pixblockdsp"
2588 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2589 asv2_encoder_select="aandcttables bswapdsp fdctdsp pixblockdsp"
2590 atrac1_decoder_select="mdct sinewin"
2591 atrac3_decoder_select="mdct"
2592 atrac3p_decoder_select="mdct sinewin"
2593 atrac9_decoder_select="mdct"
2594 avrn_decoder_select="exif jpegtables"
2595 bink_decoder_select="blockdsp hpeldsp"
2596 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2597 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2598 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2599 clearvideo_decoder_select="idctdsp"
2600 cllc_decoder_select="bswapdsp"
2601 comfortnoise_encoder_select="lpc"
2602 cook_decoder_select="audiodsp mdct sinewin"
2603 cscd_decoder_select="lzo"
2604 cscd_decoder_suggest="zlib"
2605 dca_decoder_select="mdct"
2606 dds_decoder_select="texturedsp"
2607 dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
2608 dnxhd_decoder_select="blockdsp idctdsp"
2609 dnxhd_encoder_select="blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2610 dolby_e_decoder_select="mdct"
2611 dvvideo_decoder_select="dvprofile idctdsp"
2612 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2613 dxa_decoder_deps="zlib"
2614 dxv_decoder_select="lzf texturedsp"
2615 eac3_decoder_select="ac3_decoder"
2616 eac3_encoder_select="ac3_encoder"
2617 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2618 eatgq_decoder_select="aandcttables"
2619 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2620 exr_decoder_deps="zlib"
2621 ffv1_decoder_select="rangecoder"
2622 ffv1_encoder_select="rangecoder"
2623 ffvhuff_decoder_select="huffyuv_decoder"
2624 ffvhuff_encoder_select="huffyuv_encoder"
2625 fic_decoder_select="golomb"
2626 flac_decoder_select="flacdsp"
2627 flac_encoder_select="bswapdsp flacdsp lpc"
2628 flashsv2_decoder_deps="zlib"
2629 flashsv2_encoder_deps="zlib"
2630 flashsv_decoder_deps="zlib"
2631 flashsv_encoder_deps="zlib"
2632 flv_decoder_select="h263_decoder"
2633 flv_encoder_select="h263_encoder"
2634 fourxm_decoder_select="blockdsp bswapdsp"
2635 fraps_decoder_select="bswapdsp huffman"
2636 g2m_decoder_deps="zlib"
2637 g2m_decoder_select="blockdsp idctdsp jpegtables"
2638 g729_decoder_select="audiodsp"
2639 h261_decoder_select="mpegvideo"
2640 h261_encoder_select="mpegvideoenc"
2641 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2642 h263_encoder_select="h263dsp mpegvideoenc"
2643 h263i_decoder_select="h263_decoder"
2644 h263p_decoder_select="h263_decoder"
2645 h263p_encoder_select="h263_encoder"
2646 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
2647 h264_decoder_suggest="error_resilience"
2648 hap_decoder_select="snappy texturedsp"
2649 hap_encoder_deps="libsnappy"
2650 hap_encoder_select="texturedspenc"
2651 hevc_decoder_select="bswapdsp cabac golomb hevcparse videodsp"
2652 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2653 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llvidencdsp"
2654 iac_decoder_select="imc_decoder"
2655 imc_decoder_select="bswapdsp fft mdct sinewin"
2656 indeo3_decoder_select="hpeldsp"
2657 indeo4_decoder_select="ividsp"
2658 indeo5_decoder_select="ividsp"
2659 interplay_video_decoder_select="hpeldsp"
2660 jpegls_decoder_select="mjpeg_decoder"
2661 jv_decoder_select="blockdsp"
2662 lagarith_decoder_select="llviddsp"
2663 ljpeg_encoder_select="idctdsp jpegtables mpegvideoenc"
2664 magicyuv_decoder_select="llviddsp"
2665 magicyuv_encoder_select="llvidencdsp"
2666 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2667 metasound_decoder_select="lsp mdct sinewin"
2668 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2669 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2670 mjpeg_encoder_select="jpegtables mpegvideoenc"
2671 mjpegb_decoder_select="mjpeg_decoder"
2672 mlp_decoder_select="mlp_parser"
2673 mlp_encoder_select="lpc"
2674 motionpixels_decoder_select="bswapdsp"
2675 mp1_decoder_select="mpegaudio"
2676 mp1float_decoder_select="mpegaudio"
2677 mp2_decoder_select="mpegaudio"
2678 mp2float_decoder_select="mpegaudio"
2679 mp3_decoder_select="mpegaudio"
2680 mp3adu_decoder_select="mpegaudio"
2681 mp3adufloat_decoder_select="mpegaudio"
2682 mp3float_decoder_select="mpegaudio"
2683 mp3on4_decoder_select="mpegaudio"
2684 mp3on4float_decoder_select="mpegaudio"
2685 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2686 mpc8_decoder_select="mpegaudiodsp"
2687 mpegvideo_decoder_select="mpegvideo"
2688 mpeg1video_decoder_select="mpegvideo"
2689 mpeg1video_encoder_select="mpegvideoenc h263dsp"
2690 mpeg2video_decoder_select="mpegvideo"
2691 mpeg2video_encoder_select="mpegvideoenc h263dsp"
2692 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2693 mpeg4_encoder_select="h263_encoder"
2694 msa1_decoder_select="mss34dsp"
2695 mscc_decoder_deps="zlib"
2696 msmpeg4v1_decoder_select="h263_decoder"
2697 msmpeg4v2_decoder_select="h263_decoder"
2698 msmpeg4v2_encoder_select="h263_encoder"
2699 msmpeg4v3_decoder_select="h263_decoder"
2700 msmpeg4v3_encoder_select="h263_encoder"
2701 mss2_decoder_select="mpegvideo qpeldsp vc1_decoder"
2702 mts2_decoder_select="mss34dsp"
2703 mwsc_decoder_deps="zlib"
2704 mxpeg_decoder_select="mjpeg_decoder"
2705 nellymoser_decoder_select="mdct sinewin"
2706 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2707 nuv_decoder_select="idctdsp lzo"
2708 on2avc_decoder_select="mdct"
2709 opus_decoder_deps="swresample"
2710 opus_decoder_select="mdct15"
2711 opus_encoder_select="audio_frame_queue mdct15"
2712 png_decoder_deps="zlib"
2713 png_encoder_deps="zlib"
2714 png_encoder_select="llvidencdsp"
2715 prores_decoder_select="blockdsp idctdsp"
2716 prores_encoder_select="fdctdsp"
2717 qcelp_decoder_select="lsp"
2718 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2719 ra_144_decoder_select="audiodsp"
2720 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2721 ralf_decoder_select="golomb"
2722 rawvideo_decoder_select="bswapdsp"
2723 rscc_decoder_deps="zlib"
2724 rtjpeg_decoder_select="me_cmp"
2725 rv10_decoder_select="h263_decoder"
2726 rv10_encoder_select="h263_encoder"
2727 rv20_decoder_select="h263_decoder"
2728 rv20_encoder_select="h263_encoder"
2729 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2730 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2731 screenpresso_decoder_deps="zlib"
2732 shorten_decoder_select="bswapdsp"
2733 sipr_decoder_select="lsp"
2734 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2735 snow_encoder_select="dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2736 sonic_decoder_select="golomb rangecoder"
2737 sonic_encoder_select="golomb rangecoder"
2738 sonic_ls_encoder_select="golomb rangecoder"
2739 sp5x_decoder_select="mjpeg_decoder"
2740 srgc_decoder_deps="zlib"
2741 svq1_decoder_select="hpeldsp"
2742 svq1_encoder_select="hpeldsp me_cmp mpegvideoenc"
2743 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2744 svq3_decoder_suggest="zlib"
2745 tak_decoder_select="audiodsp"
2746 tdsc_decoder_deps="zlib"
2747 tdsc_decoder_select="mjpeg_decoder"
2748 theora_decoder_select="vp3_decoder"
2749 thp_decoder_select="mjpeg_decoder"
2750 tiff_decoder_suggest="zlib lzma"
2751 tiff_encoder_suggest="zlib"
2752 truehd_decoder_select="mlp_parser"
2753 truehd_encoder_select="lpc"
2754 truemotion2_decoder_select="bswapdsp"
2755 truespeech_decoder_select="bswapdsp"
2756 tscc_decoder_deps="zlib"
2757 twinvq_decoder_select="mdct lsp sinewin"
2758 txd_decoder_select="texturedsp"
2759 utvideo_decoder_select="bswapdsp llviddsp"
2760 utvideo_encoder_select="bswapdsp huffman llvidencdsp"
2761 vble_decoder_select="llviddsp"
2762 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 mpegvideo vc1dsp"
2763 vc1image_decoder_select="vc1_decoder"
2764 vorbis_decoder_select="mdct"
2765 vorbis_encoder_select="audio_frame_queue mdct"
2766 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2767 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2768 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2769 vp6a_decoder_select="vp6_decoder"
2770 vp6f_decoder_select="vp6_decoder"
2771 vp7_decoder_select="h264pred videodsp vp8dsp"
2772 vp8_decoder_select="h264pred videodsp vp8dsp"
2773 vp9_decoder_select="videodsp vp9_parser vp9_superframe_split_bsf"
2774 wcmv_decoder_deps="zlib"
2775 webp_decoder_select="vp8_decoder exif"
2776 wmalossless_decoder_select="llauddsp"
2777 wmapro_decoder_select="mdct sinewin wma_freqs"
2778 wmav1_decoder_select="mdct sinewin wma_freqs"
2779 wmav1_encoder_select="mdct sinewin wma_freqs"
2780 wmav2_decoder_select="mdct sinewin wma_freqs"
2781 wmav2_encoder_select="mdct sinewin wma_freqs"
2782 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2783 wmv1_decoder_select="h263_decoder"
2784 wmv1_encoder_select="h263_encoder"
2785 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2786 wmv2_encoder_select="h263_encoder wmv2dsp"
2787 wmv3_decoder_select="vc1_decoder"
2788 wmv3image_decoder_select="wmv3_decoder"
2789 xma1_decoder_select="wmapro_decoder"
2790 xma2_decoder_select="wmapro_decoder"
2791 zerocodec_decoder_deps="zlib"
2792 zlib_decoder_deps="zlib"
2793 zlib_encoder_deps="zlib"
2794 zmbv_decoder_deps="zlib"
2795 zmbv_encoder_deps="zlib"
2796
2797 # hardware accelerators
2798 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2799 cuda_deps="ffnvcodec"
2800 cuvid_deps="ffnvcodec"
2801 d3d11va_deps="dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2802 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode ole32 user32"
2803 ffnvcodec_deps_any="libdl LoadLibrary"
2804 nvdec_deps="ffnvcodec"
2805 videotoolbox_hwaccel_deps="videotoolbox pthreads"
2806 videotoolbox_hwaccel_extralibs="-framework QuartzCore"
2807 xvmc_deps="X11_extensions_XvMClib_h"
2808
2809 h263_vaapi_hwaccel_deps="vaapi"
2810 h263_vaapi_hwaccel_select="h263_decoder"
2811 h263_videotoolbox_hwaccel_deps="videotoolbox"
2812 h263_videotoolbox_hwaccel_select="h263_decoder"
2813 h264_d3d11va_hwaccel_deps="d3d11va"
2814 h264_d3d11va_hwaccel_select="h264_decoder"
2815 h264_d3d11va2_hwaccel_deps="d3d11va"
2816 h264_d3d11va2_hwaccel_select="h264_decoder"
2817 h264_dxva2_hwaccel_deps="dxva2"
2818 h264_dxva2_hwaccel_select="h264_decoder"
2819 h264_nvdec_hwaccel_deps="nvdec"
2820 h264_nvdec_hwaccel_select="h264_decoder"
2821 h264_vaapi_hwaccel_deps="vaapi"
2822 h264_vaapi_hwaccel_select="h264_decoder"
2823 h264_vdpau_hwaccel_deps="vdpau"
2824 h264_vdpau_hwaccel_select="h264_decoder"
2825 h264_videotoolbox_hwaccel_deps="videotoolbox"
2826 h264_videotoolbox_hwaccel_select="h264_decoder"
2827 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2828 hevc_d3d11va_hwaccel_select="hevc_decoder"
2829 hevc_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2830 hevc_d3d11va2_hwaccel_select="hevc_decoder"
2831 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2832 hevc_dxva2_hwaccel_select="hevc_decoder"
2833 hevc_nvdec_hwaccel_deps="nvdec"
2834 hevc_nvdec_hwaccel_select="hevc_decoder"
2835 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2836 hevc_vaapi_hwaccel_select="hevc_decoder"
2837 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2838 hevc_vdpau_hwaccel_select="hevc_decoder"
2839 hevc_videotoolbox_hwaccel_deps="videotoolbox"
2840 hevc_videotoolbox_hwaccel_select="hevc_decoder"
2841 mjpeg_nvdec_hwaccel_deps="nvdec"
2842 mjpeg_nvdec_hwaccel_select="mjpeg_decoder"
2843 mjpeg_vaapi_hwaccel_deps="vaapi"
2844 mjpeg_vaapi_hwaccel_select="mjpeg_decoder"
2845 mpeg_xvmc_hwaccel_deps="xvmc"
2846 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2847 mpeg1_nvdec_hwaccel_deps="nvdec"
2848 mpeg1_nvdec_hwaccel_select="mpeg1video_decoder"
2849 mpeg1_vdpau_hwaccel_deps="vdpau"
2850 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2851 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2852 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2853 mpeg1_xvmc_hwaccel_deps="xvmc"
2854 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2855 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2856 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2857 mpeg2_d3d11va2_hwaccel_deps="d3d11va"
2858 mpeg2_d3d11va2_hwaccel_select="mpeg2video_decoder"
2859 mpeg2_dxva2_hwaccel_deps="dxva2"
2860 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2861 mpeg2_nvdec_hwaccel_deps="nvdec"
2862 mpeg2_nvdec_hwaccel_select="mpeg2video_decoder"
2863 mpeg2_vaapi_hwaccel_deps="vaapi"
2864 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2865 mpeg2_vdpau_hwaccel_deps="vdpau"
2866 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2867 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2868 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2869 mpeg2_xvmc_hwaccel_deps="xvmc"
2870 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2871 mpeg4_nvdec_hwaccel_deps="nvdec"
2872 mpeg4_nvdec_hwaccel_select="mpeg4_decoder"
2873 mpeg4_vaapi_hwaccel_deps="vaapi"
2874 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2875 mpeg4_vdpau_hwaccel_deps="vdpau"
2876 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2877 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2878 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2879 vc1_d3d11va_hwaccel_deps="d3d11va"
2880 vc1_d3d11va_hwaccel_select="vc1_decoder"
2881 vc1_d3d11va2_hwaccel_deps="d3d11va"
2882 vc1_d3d11va2_hwaccel_select="vc1_decoder"
2883 vc1_dxva2_hwaccel_deps="dxva2"
2884 vc1_dxva2_hwaccel_select="vc1_decoder"
2885 vc1_nvdec_hwaccel_deps="nvdec"
2886 vc1_nvdec_hwaccel_select="vc1_decoder"
2887 vc1_vaapi_hwaccel_deps="vaapi"
2888 vc1_vaapi_hwaccel_select="vc1_decoder"
2889 vc1_vdpau_hwaccel_deps="vdpau"
2890 vc1_vdpau_hwaccel_select="vc1_decoder"
2891 vp8_nvdec_hwaccel_deps="nvdec"
2892 vp8_nvdec_hwaccel_select="vp8_decoder"
2893 vp8_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferVP8"
2894 vp8_vaapi_hwaccel_select="vp8_decoder"
2895 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2896 vp9_d3d11va_hwaccel_select="vp9_decoder"
2897 vp9_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2898 vp9_d3d11va2_hwaccel_select="vp9_decoder"
2899 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
2900 vp9_dxva2_hwaccel_select="vp9_decoder"
2901 vp9_nvdec_hwaccel_deps="nvdec"
2902 vp9_nvdec_hwaccel_select="vp9_decoder"
2903 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9_bit_depth"
2904 vp9_vaapi_hwaccel_select="vp9_decoder"
2905 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2906 wmv3_d3d11va2_hwaccel_select="vc1_d3d11va2_hwaccel"
2907 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2908 wmv3_nvdec_hwaccel_select="vc1_nvdec_hwaccel"
2909 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2910 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2911
2912 # hardware-accelerated codecs
2913 omx_deps="libdl pthreads"
2914 omx_rpi_select="omx"
2915 qsv_deps="libmfx"
2916 qsvdec_select="qsv"
2917 qsvenc_select="qsv"
2918 qsvvpp_select="qsv"
2919 vaapi_encode_deps="vaapi"
2920 v4l2_m2m_deps="linux_videodev2_h sem_timedwait"
2921
2922 hwupload_cuda_filter_deps="ffnvcodec"
2923 scale_npp_filter_deps="ffnvcodec libnpp"
2924 scale_cuda_filter_deps="cuda_sdk"
2925 thumbnail_cuda_filter_deps="cuda_sdk"
2926
2927 amf_deps_any="libdl LoadLibrary"
2928 nvenc_deps="ffnvcodec"
2929 nvenc_deps_any="libdl LoadLibrary"
2930 nvenc_encoder_deps="nvenc"
2931
2932 h263_v4l2m2m_decoder_deps="v4l2_m2m h263_v4l2_m2m"
2933 h263_v4l2m2m_encoder_deps="v4l2_m2m h263_v4l2_m2m"
2934 h264_amf_encoder_deps="amf"
2935 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2936 h264_cuvid_decoder_deps="cuvid"
2937 h264_cuvid_decoder_select="h264_mp4toannexb_bsf"
2938 h264_mediacodec_decoder_deps="mediacodec"
2939 h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
2940 h264_mmal_decoder_deps="mmal"
2941 h264_nvenc_encoder_deps="nvenc"
2942 h264_omx_encoder_deps="omx"
2943 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec"
2944 h264_qsv_encoder_select="qsvenc"
2945 h264_rkmpp_decoder_deps="rkmpp"
2946 h264_rkmpp_decoder_select="h264_mp4toannexb_bsf"
2947 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2948 h264_vaapi_encoder_select="cbs_h264 vaapi_encode"
2949 h264_v4l2m2m_decoder_deps="v4l2_m2m h264_v4l2_m2m"
2950 h264_v4l2m2m_encoder_deps="v4l2_m2m h264_v4l2_m2m"
2951 hevc_amf_encoder_deps="amf"
2952 hevc_cuvid_decoder_deps="cuvid"
2953 hevc_cuvid_decoder_select="hevc_mp4toannexb_bsf"
2954 hevc_mediacodec_decoder_deps="mediacodec"
2955 hevc_mediacodec_decoder_select="hevc_mp4toannexb_bsf hevc_parser"
2956 hevc_nvenc_encoder_deps="nvenc"
2957 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec"
2958 hevc_qsv_encoder_select="hevcparse qsvenc"
2959 hevc_rkmpp_decoder_deps="rkmpp"
2960 hevc_rkmpp_decoder_select="hevc_mp4toannexb_bsf"
2961 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2962 hevc_vaapi_encoder_select="cbs_h265 vaapi_encode"
2963 hevc_v4l2m2m_decoder_deps="v4l2_m2m hevc_v4l2_m2m"
2964 hevc_v4l2m2m_encoder_deps="v4l2_m2m hevc_v4l2_m2m"
2965 mjpeg_cuvid_decoder_deps="cuvid"
2966 mjpeg_qsv_encoder_deps="libmfx"
2967 mjpeg_qsv_encoder_select="qsvenc"
2968 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2969 mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
2970 mpeg1_cuvid_decoder_deps="cuvid"
2971 mpeg1_v4l2m2m_decoder_deps="v4l2_m2m mpeg1_v4l2_m2m"
2972 mpeg2_crystalhd_decoder_select="crystalhd"
2973 mpeg2_cuvid_decoder_deps="cuvid"
2974 mpeg2_mmal_decoder_deps="mmal"
2975 mpeg2_mediacodec_decoder_deps="mediacodec"
2976 mpeg2_qsv_decoder_select="qsvdec mpegvideo_parser"
2977 mpeg2_qsv_encoder_select="qsvenc"
2978 mpeg2_vaapi_encoder_deps="VAEncPictureParameterBufferMPEG2"
2979 mpeg2_vaapi_encoder_select="cbs_mpeg2 vaapi_encode"
2980 mpeg2_v4l2m2m_decoder_deps="v4l2_m2m mpeg2_v4l2_m2m"
2981 mpeg4_crystalhd_decoder_select="crystalhd"
2982 mpeg4_cuvid_decoder_deps="cuvid"
2983 mpeg4_mediacodec_decoder_deps="mediacodec"
2984 mpeg4_mmal_decoder_deps="mmal"
2985 mpeg4_omx_encoder_deps="omx"
2986 mpeg4_v4l2m2m_decoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
2987 mpeg4_v4l2m2m_encoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
2988 msmpeg4_crystalhd_decoder_select="crystalhd"
2989 nvenc_h264_encoder_select="h264_nvenc_encoder"
2990 nvenc_hevc_encoder_select="hevc_nvenc_encoder"
2991 vc1_crystalhd_decoder_select="crystalhd"
2992 vc1_cuvid_decoder_deps="cuvid"
2993 vc1_mmal_decoder_deps="mmal"
2994 vc1_qsv_decoder_select="qsvdec vc1_parser"
2995 vc1_v4l2m2m_decoder_deps="v4l2_m2m vc1_v4l2_m2m"
2996 vp8_cuvid_decoder_deps="cuvid"
2997 vp8_mediacodec_decoder_deps="mediacodec"
2998 vp8_qsv_decoder_select="qsvdec vp8_parser"
2999 vp8_rkmpp_decoder_deps="rkmpp"
3000 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
3001 vp8_vaapi_encoder_select="vaapi_encode"
3002 vp8_v4l2m2m_decoder_deps="v4l2_m2m vp8_v4l2_m2m"
3003 vp8_v4l2m2m_encoder_deps="v4l2_m2m vp8_v4l2_m2m"
3004 vp9_cuvid_decoder_deps="cuvid"
3005 vp9_mediacodec_decoder_deps="mediacodec"
3006 vp9_rkmpp_decoder_deps="rkmpp"
3007 vp9_vaapi_encoder_deps="VAEncPictureParameterBufferVP9"
3008 vp9_vaapi_encoder_select="vaapi_encode"
3009 vp9_v4l2m2m_decoder_deps="v4l2_m2m vp9_v4l2_m2m"
3010 wmv3_crystalhd_decoder_select="crystalhd"
3011
3012 # parsers
3013 aac_parser_select="adts_header"
3014 h264_parser_select="golomb h264dsp h264parse"
3015 hevc_parser_select="hevcparse"
3016 mpegaudio_parser_select="mpegaudioheader"
3017 mpegvideo_parser_select="mpegvideo"
3018 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
3019 vc1_parser_select="vc1dsp"
3020
3021 # bitstream_filters
3022 aac_adtstoasc_bsf_select="adts_header"
3023 eac3_core_bsf_select="ac3_parser"
3024 filter_units_bsf_select="cbs"
3025 h264_metadata_bsf_deps="const_nan"
3026 h264_metadata_bsf_select="cbs_h264"
3027 h264_redundant_pps_bsf_select="cbs_h264"
3028 hevc_metadata_bsf_select="cbs_h265"
3029 mjpeg2jpeg_bsf_select="jpegtables"
3030 mpeg2_metadata_bsf_select="cbs_mpeg2"
3031 trace_headers_bsf_select="cbs"
3032 vp9_metadata_bsf_select="cbs_vp9"
3033
3034 # external libraries
3035 aac_at_decoder_deps="audiotoolbox"
3036 aac_at_decoder_select="aac_adtstoasc_bsf"
3037 ac3_at_decoder_deps="audiotoolbox"
3038 ac3_at_decoder_select="ac3_parser"
3039 adpcm_ima_qt_at_decoder_deps="audiotoolbox"
3040 alac_at_decoder_deps="audiotoolbox"
3041 amr_nb_at_decoder_deps="audiotoolbox"
3042 avisynth_deps_any="libdl LoadLibrary"
3043 avisynth_demuxer_deps="avisynth"
3044 avisynth_demuxer_select="riffdec"
3045 eac3_at_decoder_deps="audiotoolbox"
3046 eac3_at_decoder_select="ac3_parser"
3047 gsm_ms_at_decoder_deps="audiotoolbox"
3048 ilbc_at_decoder_deps="audiotoolbox"
3049 mp1_at_decoder_deps="audiotoolbox"
3050 mp2_at_decoder_deps="audiotoolbox"
3051 mp3_at_decoder_deps="audiotoolbox"
3052 mp1_at_decoder_select="mpegaudioheader"
3053 mp2_at_decoder_select="mpegaudioheader"
3054 mp3_at_decoder_select="mpegaudioheader"
3055 pcm_alaw_at_decoder_deps="audiotoolbox"
3056 pcm_mulaw_at_decoder_deps="audiotoolbox"
3057 qdmc_at_decoder_deps="audiotoolbox"
3058 qdm2_at_decoder_deps="audiotoolbox"
3059 aac_at_encoder_deps="audiotoolbox"
3060 aac_at_encoder_select="audio_frame_queue"
3061 alac_at_encoder_deps="audiotoolbox"
3062 alac_at_encoder_select="audio_frame_queue"
3063 ilbc_at_encoder_deps="audiotoolbox"
3064 ilbc_at_encoder_select="audio_frame_queue"
3065 pcm_alaw_at_encoder_deps="audiotoolbox"
3066 pcm_alaw_at_encoder_select="audio_frame_queue"
3067 pcm_mulaw_at_encoder_deps="audiotoolbox"
3068 pcm_mulaw_at_encoder_select="audio_frame_queue"
3069 chromaprint_muxer_deps="chromaprint"
3070 h264_videotoolbox_encoder_deps="pthreads"
3071 h264_videotoolbox_encoder_select="videotoolbox_encoder"
3072 hevc_videotoolbox_encoder_deps="pthreads"
3073 hevc_videotoolbox_encoder_select="videotoolbox_encoder"
3074 libaom_av1_decoder_deps="libaom"
3075 libaom_av1_encoder_deps="libaom"
3076 libaom_av1_encoder_select="extract_extradata_bsf"
3077 libcelt_decoder_deps="libcelt"
3078 libcodec2_decoder_deps="libcodec2"
3079 libcodec2_encoder_deps="libcodec2"
3080 libdavs2_decoder_deps="libdavs2"
3081 libfdk_aac_decoder_deps="libfdk_aac"
3082 libfdk_aac_encoder_deps="libfdk_aac"
3083 libfdk_aac_encoder_select="audio_frame_queue"
3084 libgme_demuxer_deps="libgme"
3085 libgsm_decoder_deps="libgsm"
3086 libgsm_encoder_deps="libgsm"
3087 libgsm_ms_decoder_deps="libgsm"
3088 libgsm_ms_encoder_deps="libgsm"
3089 libilbc_decoder_deps="libilbc"
3090 libilbc_encoder_deps="libilbc"
3091 libkvazaar_encoder_deps="libkvazaar"
3092 libmodplug_demuxer_deps="libmodplug"
3093 libmp3lame_encoder_deps="libmp3lame"
3094 libmp3lame_encoder_select="audio_frame_queue mpegaudioheader"
3095 libopencore_amrnb_decoder_deps="libopencore_amrnb"
3096 libopencore_amrnb_encoder_deps="libopencore_amrnb"
3097 libopencore_amrnb_encoder_select="audio_frame_queue"
3098 libopencore_amrwb_decoder_deps="libopencore_amrwb"
3099 libopenh264_decoder_deps="libopenh264"
3100 libopenh264_decoder_select="h264_mp4toannexb_bsf"
3101 libopenh264_encoder_deps="libopenh264"
3102 libopenjpeg_decoder_deps="libopenjpeg"
3103 libopenjpeg_encoder_deps="libopenjpeg"
3104 libopenmpt_demuxer_deps="libopenmpt"
3105 libopus_decoder_deps="libopus"
3106 libopus_encoder_deps="libopus"
3107 libopus_encoder_select="audio_frame_queue"
3108 librsvg_decoder_deps="librsvg"
3109 libshine_encoder_deps="libshine"
3110 libshine_encoder_select="audio_frame_queue"
3111 libspeex_decoder_deps="libspeex"
3112 libspeex_encoder_deps="libspeex"
3113 libspeex_encoder_select="audio_frame_queue"
3114 libtheora_encoder_deps="libtheora"
3115 libtwolame_encoder_deps="libtwolame"
3116 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
3117 libvorbis_decoder_deps="libvorbis"
3118 libvorbis_encoder_deps="libvorbis libvorbisenc"
3119 libvorbis_encoder_select="audio_frame_queue"
3120 libvpx_vp8_decoder_deps="libvpx"
3121 libvpx_vp8_encoder_deps="libvpx"
3122 libvpx_vp9_decoder_deps="libvpx"
3123 libvpx_vp9_encoder_deps="libvpx"
3124 libwavpack_encoder_deps="libwavpack"
3125 libwavpack_encoder_select="audio_frame_queue"
3126 libwebp_encoder_deps="libwebp"
3127 libwebp_anim_encoder_deps="libwebp"
3128 libx262_encoder_deps="libx262"
3129 libx264_encoder_deps="libx264"
3130 libx264rgb_encoder_deps="libx264 x264_csp_bgr"
3131 libx264rgb_encoder_select="libx264_encoder"
3132 libx265_encoder_deps="libx265"
3133 libxavs_encoder_deps="libxavs"
3134 libxvid_encoder_deps="libxvid"
3135 libzvbi_teletext_decoder_deps="libzvbi"
3136 vapoursynth_demuxer_deps="vapoursynth"
3137 videotoolbox_suggest="coreservices"
3138 videotoolbox_deps="corefoundation coremedia corevideo"
3139 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
3140
3141 # demuxers / muxers
3142 ac3_demuxer_select="ac3_parser"
3143 aiff_muxer_select="iso_media"
3144 asf_demuxer_select="riffdec"
3145 asf_o_demuxer_select="riffdec"
3146 asf_muxer_select="riffenc"
3147 asf_stream_muxer_select="asf_muxer"
3148 avi_demuxer_select="iso_media riffdec exif"
3149 avi_muxer_select="riffenc"
3150 caf_demuxer_select="iso_media riffdec"
3151 caf_muxer_select="iso_media"
3152 dash_muxer_select="mp4_muxer"
3153 dash_demuxer_deps="libxml2"
3154 dirac_demuxer_select="dirac_parser"
3155 dts_demuxer_select="dca_parser"
3156 dtshd_demuxer_select="dca_parser"
3157 dv_demuxer_select="dvprofile"
3158 dv_muxer_select="dvprofile"
3159 dxa_demuxer_select="riffdec"
3160 eac3_demuxer_select="ac3_parser"
3161 f4v_muxer_select="mov_muxer"
3162 fifo_muxer_deps="threads"
3163 flac_demuxer_select="flac_parser"
3164 hds_muxer_select="flv_muxer"
3165 hls_muxer_select="mpegts_muxer"
3166 hls_muxer_suggest="gcrypt openssl"
3167 image2_alias_pix_demuxer_select="image2_demuxer"
3168 image2_brender_pix_demuxer_select="image2_demuxer"
3169 ipod_muxer_select="mov_muxer"
3170 ismv_muxer_select="mov_muxer"
3171 matroska_audio_muxer_select="matroska_muxer"
3172 matroska_demuxer_select="iso_media riffdec"
3173 matroska_demuxer_suggest="bzlib lzo zlib"
3174 matroska_muxer_select="iso_media riffenc"
3175 mmf_muxer_select="riffenc"
3176 mov_demuxer_select="iso_media riffdec"
3177 mov_demuxer_suggest="zlib"
3178 mov_muxer_select="iso_media riffenc rtpenc_chain"
3179 mp3_demuxer_select="mpegaudio_parser"
3180 mp3_muxer_select="mpegaudioheader"
3181 mp4_muxer_select="mov_muxer"
3182 mpegts_demuxer_select="iso_media"
3183 mpegts_muxer_select="adts_muxer latm_muxer"
3184 mpegtsraw_demuxer_select="mpegts_demuxer"
3185 mxf_d10_muxer_select="mxf_muxer"
3186 mxf_opatom_muxer_select="mxf_muxer"
3187 nut_muxer_select="riffenc"
3188 nuv_demuxer_select="riffdec"
3189 oga_muxer_select="ogg_muxer"
3190 ogg_demuxer_select="dirac_parse"
3191 ogv_muxer_select="ogg_muxer"
3192 opus_muxer_select="ogg_muxer"
3193 psp_muxer_select="mov_muxer"
3194 rtp_demuxer_select="sdp_demuxer"
3195 rtp_muxer_select="golomb"
3196 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
3197 rtsp_demuxer_select="http_protocol rtpdec"
3198 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
3199 sap_demuxer_select="sdp_demuxer"
3200 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
3201 sdp_demuxer_select="rtpdec"
3202 smoothstreaming_muxer_select="ismv_muxer"
3203 spdif_demuxer_select="adts_header"
3204 spdif_muxer_select="adts_header"
3205 spx_muxer_select="ogg_muxer"
3206 swf_demuxer_suggest="zlib"
3207 tak_demuxer_select="tak_parser"
3208 tg2_muxer_select="mov_muxer"
3209 tgp_muxer_select="mov_muxer"
3210 vobsub_demuxer_select="mpegps_demuxer"
3211 w64_demuxer_select="wav_demuxer"
3212 w64_muxer_select="wav_muxer"
3213 wav_demuxer_select="riffdec"
3214 wav_muxer_select="riffenc"
3215 webm_muxer_select="iso_media riffenc"
3216 webm_dash_manifest_demuxer_select="matroska_demuxer"
3217 wtv_demuxer_select="mpegts_demuxer riffdec"
3218 wtv_muxer_select="mpegts_muxer riffenc"
3219 xmv_demuxer_select="riffdec"
3220 xwma_demuxer_select="riffdec"
3221
3222 # indevs / outdevs
3223 android_camera_indev_deps="android camera2ndk mediandk pthreads"
3224 android_camera_indev_extralibs="-landroid -lcamera2ndk -lmediandk"
3225 alsa_indev_deps="alsa"
3226 alsa_outdev_deps="alsa"
3227 avfoundation_indev_deps="avfoundation corevideo coremedia pthreads"
3228 avfoundation_indev_suggest="coregraphics applicationservices"
3229 avfoundation_indev_extralibs="-framework Foundation"
3230 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
3231 caca_outdev_deps="libcaca"
3232 decklink_deps_any="libdl LoadLibrary"
3233 decklink_indev_deps="decklink threads"
3234 decklink_indev_extralibs="-lstdc++"
3235 decklink_outdev_deps="decklink threads"
3236 decklink_outdev_extralibs="-lstdc++"
3237 libndi_newtek_indev_deps="libndi_newtek"
3238 libndi_newtek_indev_extralibs="-lndi"
3239 libndi_newtek_outdev_deps="libndi_newtek"
3240 libndi_newtek_outdev_extralibs="-lndi"
3241 dshow_indev_deps="IBaseFilter"
3242 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
3243 fbdev_indev_deps="linux_fb_h"
3244 fbdev_outdev_deps="linux_fb_h"
3245 gdigrab_indev_deps="CreateDIBSection"
3246 gdigrab_indev_extralibs="-lgdi32"
3247 gdigrab_indev_select="bmp_decoder"
3248 iec61883_indev_deps="libiec61883"
3249 jack_indev_deps="libjack"
3250 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
3251 kmsgrab_indev_deps="libdrm"
3252 lavfi_indev_deps="avfilter"
3253 libcdio_indev_deps="libcdio"
3254 libdc1394_indev_deps="libdc1394"
3255 openal_indev_deps="openal"
3256 opengl_outdev_deps="opengl"
3257 oss_indev_deps_any="sys_soundcard_h"
3258 oss_outdev_deps_any="sys_soundcard_h"
3259 pulse_indev_deps="libpulse"
3260 pulse_outdev_deps="libpulse"
3261 sdl2_outdev_deps="sdl2"
3262 sndio_indev_deps="sndio"
3263 sndio_outdev_deps="sndio"
3264 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
3265 v4l2_indev_suggest="libv4l2"
3266 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
3267 v4l2_outdev_suggest="libv4l2"
3268 vfwcap_indev_deps="vfw32 vfwcap_defines"
3269 xcbgrab_indev_deps="libxcb"
3270 xcbgrab_indev_suggest="libxcb_shm libxcb_shape libxcb_xfixes"
3271 xv_outdev_deps="xlib"
3272
3273 # protocols
3274 async_protocol_deps="threads"
3275 bluray_protocol_deps="libbluray"
3276 ffrtmpcrypt_protocol_conflict="librtmp_protocol"
3277 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl mbedtls"
3278 ffrtmpcrypt_protocol_select="tcp_protocol"
3279 ffrtmphttp_protocol_conflict="librtmp_protocol"
3280 ffrtmphttp_protocol_select="http_protocol"
3281 ftp_protocol_select="tcp_protocol"
3282 gopher_protocol_select="network"
3283 http_protocol_select="tcp_protocol"
3284 http_protocol_suggest="zlib"
3285 httpproxy_protocol_select="tcp_protocol"
3286 httpproxy_protocol_suggest="zlib"
3287 https_protocol_select="tls_protocol"
3288 https_protocol_suggest="zlib"
3289 icecast_protocol_select="http_protocol"
3290 mmsh_protocol_select="http_protocol"
3291 mmst_protocol_select="network"
3292 rtmp_protocol_conflict="librtmp_protocol"
3293 rtmp_protocol_select="tcp_protocol"
3294 rtmp_protocol_suggest="zlib"
3295 rtmpe_protocol_select="ffrtmpcrypt_protocol"
3296 rtmpe_protocol_suggest="zlib"
3297 rtmps_protocol_conflict="librtmp_protocol"
3298 rtmps_protocol_select="tls_protocol"
3299 rtmps_protocol_suggest="zlib"
3300 rtmpt_protocol_select="ffrtmphttp_protocol"
3301 rtmpt_protocol_suggest="zlib"
3302 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
3303 rtmpte_protocol_suggest="zlib"
3304 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
3305 rtmpts_protocol_suggest="zlib"
3306 rtp_protocol_select="udp_protocol"
3307 schannel_conflict="openssl gnutls libtls mbedtls"
3308 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
3309 sctp_protocol_select="network"
3310 securetransport_conflict="openssl gnutls libtls mbedtls"
3311 srtp_protocol_select="rtp_protocol srtp"
3312 tcp_protocol_select="network"
3313 tls_protocol_deps_any="gnutls openssl schannel securetransport libtls mbedtls"
3314 tls_protocol_select="tcp_protocol"
3315 udp_protocol_select="network"
3316 udplite_protocol_select="network"
3317 unix_protocol_deps="sys_un_h"
3318 unix_protocol_select="network"
3319
3320 # external library protocols
3321 librtmp_protocol_deps="librtmp"
3322 librtmpe_protocol_deps="librtmp"
3323 librtmps_protocol_deps="librtmp"
3324 librtmpt_protocol_deps="librtmp"
3325 librtmpte_protocol_deps="librtmp"
3326 libsmbclient_protocol_deps="libsmbclient gplv3"
3327 libsrt_protocol_deps="libsrt"
3328 libsrt_protocol_select="network"
3329 libssh_protocol_deps="libssh"
3330 libtls_conflict="openssl gnutls mbedtls"
3331
3332 # filters
3333 afftfilt_filter_deps="avcodec"
3334 afftfilt_filter_select="fft"
3335 afir_filter_deps="avcodec"
3336 afir_filter_select="fft"
3337 amovie_filter_deps="avcodec avformat"
3338 aresample_filter_deps="swresample"
3339 ass_filter_deps="libass"
3340 atempo_filter_deps="avcodec"
3341 atempo_filter_select="rdft"
3342 avgblur_opencl_filter_deps="opencl"
3343 azmq_filter_deps="libzmq"
3344 blackframe_filter_deps="gpl"
3345 boxblur_filter_deps="gpl"
3346 boxblur_opencl_filter_deps="opencl gpl"
3347 bs2b_filter_deps="libbs2b"
3348 colormatrix_filter_deps="gpl"
3349 convolution_opencl_filter_deps="opencl"
3350 convolve_filter_deps="avcodec"
3351 convolve_filter_select="fft"
3352 coreimage_filter_deps="coreimage appkit"
3353 coreimage_filter_extralibs="-framework OpenGL"
3354 coreimagesrc_filter_deps="coreimage appkit"
3355 coreimagesrc_filter_extralibs="-framework OpenGL"
3356 cover_rect_filter_deps="avcodec avformat gpl"
3357 cropdetect_filter_deps="gpl"
3358 deconvolve_filter_deps="avcodec"
3359 deconvolve_filter_select="fft"
3360 deinterlace_qsv_filter_deps="libmfx"
3361 deinterlace_vaapi_filter_deps="vaapi"
3362 delogo_filter_deps="gpl"
3363 denoise_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3364 deshake_filter_select="pixelutils"
3365 dilation_opencl_filter_deps="opencl"
3366 drawtext_filter_deps="libfreetype"
3367 drawtext_filter_suggest="libfontconfig libfribidi"
3368 elbg_filter_deps="avcodec"
3369 eq_filter_deps="gpl"
3370 erosion_opencl_filter_deps="opencl"
3371 fftfilt_filter_deps="avcodec"
3372 fftfilt_filter_select="rdft"
3373 fftdnoiz_filter_deps="avcodec"
3374 fftdnoiz_filter_select="fft"
3375 find_rect_filter_deps="avcodec avformat gpl"
3376 firequalizer_filter_deps="avcodec"
3377 firequalizer_filter_select="rdft"
3378 flite_filter_deps="libflite"
3379 framerate_filter_select="pixelutils"
3380 frei0r_filter_deps="frei0r libdl"
3381 frei0r_src_filter_deps="frei0r libdl"
3382 fspp_filter_deps="gpl"
3383 geq_filter_deps="gpl"
3384 histeq_filter_deps="gpl"
3385 hqdn3d_filter_deps="gpl"
3386 interlace_filter_deps="gpl"
3387 kerndeint_filter_deps="gpl"
3388 ladspa_filter_deps="ladspa libdl"
3389 lensfun_filter_deps="liblensfun version3"
3390 lv2_filter_deps="lv2"
3391 mcdeint_filter_deps="avcodec gpl"
3392 movie_filter_deps="avcodec avformat"
3393 mpdecimate_filter_deps="gpl"
3394 mpdecimate_filter_select="pixelutils"
3395 mptestsrc_filter_deps="gpl"
3396 negate_filter_deps="lut_filter"
3397 nnedi_filter_deps="gpl"
3398 ocr_filter_deps="libtesseract"
3399 ocv_filter_deps="libopencv"
3400 openclsrc_filter_deps="opencl"
3401 overlay_opencl_filter_deps="opencl"
3402 overlay_qsv_filter_deps="libmfx"
3403 overlay_qsv_filter_select="qsvvpp"
3404 owdenoise_filter_deps="gpl"
3405 pan_filter_deps="swresample"
3406 perspective_filter_deps="gpl"
3407 phase_filter_deps="gpl"
3408 pp7_filter_deps="gpl"
3409 pp_filter_deps="gpl postproc"
3410 prewitt_opencl_filter_deps="opencl"
3411 procamp_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3412 program_opencl_filter_deps="opencl"
3413 pullup_filter_deps="gpl"
3414 removelogo_filter_deps="avcodec avformat swscale"
3415 repeatfields_filter_deps="gpl"
3416 resample_filter_deps="avresample"
3417 roberts_opencl_filter_deps="opencl"
3418 rubberband_filter_deps="librubberband"
3419 sab_filter_deps="gpl swscale"
3420 scale2ref_filter_deps="swscale"
3421 scale_filter_deps="swscale"
3422 scale_qsv_filter_deps="libmfx"
3423 select_filter_select="pixelutils"
3424 sharpness_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3425 showcqt_filter_deps="avcodec avformat swscale"
3426 showcqt_filter_suggest="libfontconfig libfreetype"
3427 showcqt_filter_select="fft"
3428 showfreqs_filter_deps="avcodec"
3429 showfreqs_filter_select="fft"
3430 showspectrum_filter_deps="avcodec"
3431 showspectrum_filter_select="fft"
3432 showspectrumpic_filter_deps="avcodec"
3433 showspectrumpic_filter_select="fft"
3434 signature_filter_deps="gpl avcodec avformat"
3435 smartblur_filter_deps="gpl swscale"
3436 sobel_opencl_filter_deps="opencl"
3437 sofalizer_filter_deps="libmysofa avcodec"
3438 sofalizer_filter_select="fft"
3439 spectrumsynth_filter_deps="avcodec"
3440 spectrumsynth_filter_select="fft"
3441 spp_filter_deps="gpl avcodec"
3442 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3443 sr_filter_deps="avformat swscale"
3444 sr_filter_select="dnn"
3445 stereo3d_filter_deps="gpl"
3446 subtitles_filter_deps="avformat avcodec libass"
3447 super2xsai_filter_deps="gpl"
3448 pixfmts_super2xsai_test_deps="super2xsai_filter"
3449 tinterlace_filter_deps="gpl"
3450 tinterlace_merge_test_deps="tinterlace_filter"
3451 tinterlace_pad_test_deps="tinterlace_filter"
3452 tonemap_filter_deps="const_nan"
3453 tonemap_opencl_filter_deps="opencl const_nan"
3454 unsharp_opencl_filter_deps="opencl"
3455 uspp_filter_deps="gpl avcodec"
3456 vaguedenoiser_filter_deps="gpl"
3457 vidstabdetect_filter_deps="libvidstab"
3458 vidstabtransform_filter_deps="libvidstab"
3459 libvmaf_filter_deps="libvmaf pthreads"
3460 zmq_filter_deps="libzmq"
3461 zoompan_filter_deps="swscale"
3462 zscale_filter_deps="libzimg const_nan"
3463 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3464 vpp_qsv_filter_deps="libmfx"
3465 vpp_qsv_filter_select="qsvvpp"
3466
3467 # examples
3468 avio_dir_cmd_deps="avformat avutil"
3469 avio_reading_deps="avformat avcodec avutil"
3470 decode_audio_example_deps="avcodec avutil"
3471 decode_video_example_deps="avcodec avutil"
3472 demuxing_decoding_example_deps="avcodec avformat avutil"
3473 encode_audio_example_deps="avcodec avutil"
3474 encode_video_example_deps="avcodec avutil"
3475 extract_mvs_example_deps="avcodec avformat avutil"
3476 filter_audio_example_deps="avfilter avutil"
3477 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3478 filtering_video_example_deps="avfilter avcodec avformat avutil"
3479 http_multiclient_example_deps="avformat avutil fork"
3480 hw_decode_example_deps="avcodec avformat avutil"
3481 metadata_example_deps="avformat avutil"
3482 muxing_example_deps="avcodec avformat avutil swscale"
3483 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
3484 remuxing_example_deps="avcodec avformat avutil"
3485 resampling_audio_example_deps="avutil swresample"
3486 scaling_video_example_deps="avutil swscale"
3487 transcode_aac_example_deps="avcodec avformat swresample"
3488 transcoding_example_deps="avfilter avcodec avformat avutil"
3489 vaapi_encode_example_deps="avcodec avutil h264_vaapi_encoder"
3490 vaapi_transcode_example_deps="avcodec avformat avutil h264_vaapi_encoder"
3491
3492 # EXTRALIBS_LIST
3493 cpu_init_extralibs="pthreads_extralibs"
3494 cws2fws_extralibs="zlib_extralibs"
3495
3496 # libraries, in any order
3497 avcodec_deps="avutil"
3498 avcodec_suggest="libm"
3499 avcodec_select="null_bsf"
3500 avdevice_deps="avformat avcodec avutil"
3501 avdevice_suggest="libm"
3502 avfilter_deps="avutil"
3503 avfilter_suggest="libm"
3504 avformat_deps="avcodec avutil"
3505 avformat_suggest="libm network zlib"
3506 avresample_deps="avutil"
3507 avresample_suggest="libm"
3508 avutil_suggest="clock_gettime ffnvcodec libm libdrm libmfx opencl user32 vaapi videotoolbox corefoundation corevideo coremedia bcrypt"
3509 postproc_deps="avutil gpl"
3510 postproc_suggest="libm"
3511 swresample_deps="avutil"
3512 swresample_suggest="libm libsoxr"
3513 swscale_deps="avutil"
3514 swscale_suggest="libm"
3515
3516 avcodec_extralibs="pthreads_extralibs iconv_extralibs"
3517 avfilter_extralibs="pthreads_extralibs"
3518 avutil_extralibs="d3d11va_extralibs nanosleep_extralibs pthreads_extralibs vaapi_drm_extralibs vaapi_x11_extralibs vdpau_x11_extralibs"
3519
3520 # programs
3521 ffmpeg_deps="avcodec avfilter avformat"
3522 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3523                null_filter
3524                trim_filter"
3525 ffmpeg_suggest="ole32 psapi shell32"
3526 ffplay_deps="avcodec avformat swscale swresample sdl2"
3527 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3528 ffplay_suggest="shell32"
3529 ffprobe_deps="avcodec avformat"
3530 ffprobe_suggest="shell32"
3531
3532 # documentation
3533 podpages_deps="perl"
3534 manpages_deps="perl pod2man"
3535 htmlpages_deps="perl"
3536 htmlpages_deps_any="makeinfo_html texi2html"
3537 txtpages_deps="perl makeinfo"
3538 doc_deps_any="manpages htmlpages podpages txtpages"
3539
3540 # default parameters
3541
3542 logfile="ffbuild/config.log"
3543
3544 # installation paths
3545 prefix_default="/usr/local"
3546 bindir_default='${prefix}/bin'
3547 datadir_default='${prefix}/share/ffmpeg'
3548 docdir_default='${prefix}/share/doc/ffmpeg'
3549 incdir_default='${prefix}/include'
3550 libdir_default='${prefix}/lib'
3551 mandir_default='${prefix}/share/man'
3552
3553 # toolchain
3554 ar_default="ar"
3555 cc_default="gcc"
3556 cxx_default="g++"
3557 host_cc_default="gcc"
3558 doxygen_default="doxygen"
3559 install="install"
3560 ln_s_default="ln -s -f"
3561 nm_default="nm -g"
3562 pkg_config_default=pkg-config
3563 ranlib_default="ranlib"
3564 strip_default="strip"
3565 version_script='--version-script'
3566 objformat="elf32"
3567 x86asmexe_default="nasm"
3568 windres_default="windres"
3569 nvcc_default="nvcc"
3570 nvccflags_default="-gencode arch=compute_30,code=sm_30 -O2"
3571 striptype="direct"
3572
3573 # OS
3574 target_os_default=$(tolower $(uname -s))
3575 host_os=$target_os_default
3576
3577 # machine
3578 if test "$target_os_default" = aix; then
3579     arch_default=$(uname -p)
3580     strip_default="strip -X32_64"
3581 else
3582     arch_default=$(uname -m)
3583 fi
3584 cpu="generic"
3585 intrinsics="none"
3586
3587 # configurable options
3588 enable $PROGRAM_LIST
3589 enable $DOCUMENT_LIST
3590 enable $EXAMPLE_LIST
3591 enable $(filter_out avresample $LIBRARY_LIST)
3592 enable stripping
3593
3594 enable asm
3595 enable debug
3596 enable doc
3597 enable faan faandct faanidct
3598 enable optimizations
3599 enable runtime_cpudetect
3600 enable safe_bitstream_reader
3601 enable static
3602 enable swscale_alpha
3603 enable valgrind_backtrace
3604
3605 sws_max_filter_size_default=256
3606 set_default sws_max_filter_size
3607
3608 # internal components are enabled by default
3609 enable $EXTRALIBS_LIST
3610
3611 # Avoid external, non-system, libraries getting enabled by dependency resolution
3612 disable $EXTERNAL_LIBRARY_LIST $HWACCEL_LIBRARY_LIST
3613
3614 # build settings
3615 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3616 LIBPREF="lib"
3617 LIBSUF=".a"
3618 FULLNAME='$(NAME)$(BUILDSUF)'
3619 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3620 SLIBPREF="lib"
3621 SLIBSUF=".so"
3622 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3623 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3624 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3625 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3626 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3627 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3628 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
3629
3630 asflags_filter=echo
3631 cflags_filter=echo
3632 ldflags_filter=echo
3633
3634 AS_C='-c'
3635 AS_O='-o $@'
3636 CC_C='-c'
3637 CC_E='-E -o $@'
3638 CC_O='-o $@'
3639 CXX_C='-c'
3640 CXX_O='-o $@'
3641 OBJCC_C='-c'
3642 OBJCC_E='-E -o $@'
3643 OBJCC_O='-o $@'
3644 X86ASM_O='-o $@'
3645 LD_O='-o $@'
3646 LD_LIB='-l%'
3647 LD_PATH='-L'
3648 HOSTCC_C='-c'
3649 HOSTCC_E='-E -o $@'
3650 HOSTCC_O='-o $@'
3651 HOSTLD_O='-o $@'
3652 NVCC_C='-c'
3653 NVCC_O='-o $@'
3654
3655 host_extralibs='-lm'
3656 host_cflags_filter=echo
3657 host_ldflags_filter=echo
3658
3659 target_path='$(CURDIR)'
3660
3661 # since the object filename is not given with the -MM flag, the compiler
3662 # is only able to print the basename, and we must add the path ourselves
3663 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3664 DEPFLAGS='-MM'
3665
3666 mkdir -p ffbuild
3667
3668 # find source path
3669 if test -f configure; then
3670     source_path=.
3671 else
3672     source_path=$(cd $(dirname "$0"); pwd)
3673     case "$source_path" in
3674         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3675     esac
3676     test -e "$source_path/config.h" &&
3677         die "Out of tree builds are impossible with config.h in source dir."
3678 fi
3679
3680 for v in "$@"; do
3681     r=${v#*=}
3682     l=${v%"$r"}
3683     r=$(sh_quote "$r")
3684     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3685 done
3686
3687 find_things_extern(){
3688     thing=$1
3689     pattern=$2
3690     file=$source_path/$3
3691     out=${4:-$thing}
3692     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$out/p" "$file"
3693 }
3694
3695 find_filters_extern(){
3696     file=$source_path/$1
3697     #sed -n "s/^extern AVFilter ff_\([avfsinkrc]\{2,5\}\)_\(\w\+\);/\2_filter/p" $file
3698     sed -E -n "s/^extern AVFilter ff_([avfsinkrc]{2,5})_([a-zA-Z0-9_]+);/\2_filter/p" $file
3699 }
3700
3701 FILTER_LIST=$(find_filters_extern libavfilter/allfilters.c)
3702 OUTDEV_LIST=$(find_things_extern muxer AVOutputFormat libavdevice/alldevices.c outdev)
3703 INDEV_LIST=$(find_things_extern demuxer AVInputFormat libavdevice/alldevices.c indev)
3704 MUXER_LIST=$(find_things_extern muxer AVOutputFormat libavformat/allformats.c)
3705 DEMUXER_LIST=$(find_things_extern demuxer AVInputFormat libavformat/allformats.c)
3706 ENCODER_LIST=$(find_things_extern encoder AVCodec libavcodec/allcodecs.c)
3707 DECODER_LIST=$(find_things_extern decoder AVCodec libavcodec/allcodecs.c)
3708 CODEC_LIST="
3709     $ENCODER_LIST
3710     $DECODER_LIST
3711 "
3712 PARSER_LIST=$(find_things_extern parser AVCodecParser libavcodec/parsers.c)
3713 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3714 HWACCEL_LIST=$(find_things_extern hwaccel AVHWAccel libavcodec/hwaccels.h)
3715 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3716
3717 AVCODEC_COMPONENTS_LIST="
3718     $BSF_LIST
3719     $DECODER_LIST
3720     $ENCODER_LIST
3721     $HWACCEL_LIST
3722     $PARSER_LIST
3723 "
3724
3725 AVDEVICE_COMPONENTS_LIST="
3726     $INDEV_LIST
3727     $OUTDEV_LIST
3728 "
3729
3730 AVFILTER_COMPONENTS_LIST="
3731     $FILTER_LIST
3732 "
3733
3734 AVFORMAT_COMPONENTS_LIST="
3735     $DEMUXER_LIST
3736     $MUXER_LIST
3737     $PROTOCOL_LIST
3738 "
3739
3740 ALL_COMPONENTS="
3741     $AVCODEC_COMPONENTS_LIST
3742     $AVDEVICE_COMPONENTS_LIST
3743     $AVFILTER_COMPONENTS_LIST
3744     $AVFORMAT_COMPONENTS_LIST
3745 "
3746
3747 for n in $COMPONENT_LIST; do
3748     v=$(toupper ${n%s})_LIST
3749     eval enable \$$v
3750     eval ${n}_if_any="\$$v"
3751 done
3752
3753 enable $ARCH_EXT_LIST
3754
3755 die_unknown(){
3756     echo "Unknown option \"$1\"."
3757     echo "See $0 --help for available options."
3758     exit 1
3759 }
3760
3761 print_in_columns() {
3762     cols=$(expr $ncols / 24)
3763     cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
3764 }
3765
3766 show_list() {
3767     suffix=_$1
3768     shift
3769     echo $* | sed s/$suffix//g | print_in_columns
3770     exit 0
3771 }
3772
3773 rand_list(){
3774     IFS=', '
3775     set -- $*
3776     unset IFS
3777     for thing; do
3778         comp=${thing%:*}
3779         prob=${thing#$comp}
3780         prob=${prob#:}
3781         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3782         echo "prob ${prob:-0.5}"
3783         printf '%s\n' $comp
3784     done
3785 }
3786
3787 do_random(){
3788     action=$1
3789     shift
3790     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3791     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3792 }
3793
3794 for opt do
3795     optval="${opt#*=}"
3796     case "$opt" in
3797         --extra-ldflags=*)
3798             add_ldflags $optval
3799         ;;
3800         --extra-ldexeflags=*)
3801             add_ldexeflags $optval
3802         ;;
3803         --extra-ldsoflags=*)
3804             add_ldsoflags $optval
3805         ;;
3806         --extra-ldlibflags=*)
3807             warn "The --extra-ldlibflags option is only provided for compatibility and will be\n"\
3808                  "removed in the future. Use --extra-ldsoflags instead."
3809             add_ldsoflags $optval
3810         ;;
3811         --extra-libs=*)
3812             add_extralibs $optval
3813         ;;
3814         --disable-devices)
3815             disable $INDEV_LIST $OUTDEV_LIST
3816         ;;
3817         --enable-debug=*)
3818             debuglevel="$optval"
3819         ;;
3820         --disable-programs)
3821             disable $PROGRAM_LIST
3822         ;;
3823         --disable-everything)
3824             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3825         ;;
3826         --disable-all)
3827             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3828             disable $LIBRARY_LIST $PROGRAM_LIST doc
3829             enable avutil
3830         ;;
3831         --enable-random|--disable-random)
3832             action=${opt%%-random}
3833             do_random ${action#--} $COMPONENT_LIST
3834         ;;
3835         --enable-random=*|--disable-random=*)
3836             action=${opt%%-random=*}
3837             do_random ${action#--} $optval
3838         ;;
3839         --enable-sdl)
3840             enable sdl2
3841         ;;
3842         --enable-*=*|--disable-*=*)
3843             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3844             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3845             eval list=\$$(toupper $thing)_LIST
3846             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3847             list=$(filter "$name" $list)
3848             [ "$list" = "" ] && warn "Option $opt did not match anything"
3849             $action $list
3850         ;;
3851         --enable-yasm|--disable-yasm)
3852             warn "The ${opt} option is only provided for compatibility and will be\n"\
3853                  "removed in the future. Use --enable-x86asm / --disable-x86asm instead."
3854             test $opt = --enable-yasm && x86asm=yes || x86asm=no
3855         ;;
3856         --yasmexe=*)
3857             warn "The --yasmexe option is only provided for compatibility and will be\n"\
3858                  "removed in the future. Use --x86asmexe instead."
3859             x86asmexe="$optval"
3860         ;;
3861         --enable-?*|--disable-?*)
3862             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3863             if is_in $option $COMPONENT_LIST; then
3864                 test $action = disable && action=unset
3865                 eval $action \$$(toupper ${option%s})_LIST
3866             elif is_in $option $CMDLINE_SELECT; then
3867                 $action $option
3868             else
3869                 die_unknown $opt
3870             fi
3871         ;;
3872         --list-*)
3873             NAME="${opt#--list-}"
3874             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3875             NAME=${NAME%s}
3876             eval show_list $NAME \$$(toupper $NAME)_LIST
3877         ;;
3878         --help|-h) show_help
3879         ;;
3880         --quiet|-q) quiet=yes
3881         ;;
3882         --fatal-warnings) enable fatal_warnings
3883         ;;
3884         --libfuzzer=*)
3885             libfuzzer_path="$optval"
3886         ;;
3887         *)
3888             optname="${opt%%=*}"
3889             optname="${optname#--}"
3890             optname=$(echo "$optname" | sed 's/-/_/g')
3891             if is_in $optname $CMDLINE_SET; then
3892                 eval $optname='$optval'
3893             elif is_in $optname $CMDLINE_APPEND; then
3894                 append $optname "$optval"
3895             else
3896                 die_unknown $opt
3897             fi
3898         ;;
3899     esac
3900 done
3901
3902 for e in $env; do
3903     eval "export $e"
3904 done
3905
3906 if disabled autodetect; then
3907
3908     # Unless iconv is explicitely disabled by the user, we still want to probe
3909     # for the iconv from the libc.
3910     disabled iconv || enable libc_iconv
3911
3912     disable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3913     disable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3914 fi
3915 # Mark specifically enabled, but normally autodetected libraries as requested.
3916 for lib in $AUTODETECT_LIBS; do
3917     enabled $lib && request $lib
3918 done
3919 #TODO: switch to $AUTODETECT_LIBS when $THREADS_LIST is supported the same way
3920 enable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3921 enable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3922
3923 disabled logging && logfile=/dev/null
3924
3925 # command line configuration sanity checks
3926
3927 # we need to build at least one lib type
3928 if ! enabled_any static shared; then
3929     cat <<EOF
3930 At least one library type must be built.
3931 Specify --enable-static to build the static libraries or --enable-shared to
3932 build the shared libraries as well. To only build the shared libraries specify
3933 --disable-static in addition to --enable-shared.
3934 EOF
3935     exit 1
3936 fi
3937
3938 die_license_disabled() {
3939     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
3940 }
3941
3942 die_license_disabled_gpl() {
3943     enabled $1 || { enabled $v && die "$v is incompatible with the gpl and --enable-$1 is not specified."; }
3944 }
3945
3946 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3947 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3948
3949 enabled gpl && map "die_license_disabled_gpl nonfree" $EXTERNAL_LIBRARY_NONFREE_LIST
3950 map "die_license_disabled nonfree" $HWACCEL_LIBRARY_NONFREE_LIST
3951
3952 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3953
3954 if enabled nonfree; then
3955     license="nonfree and unredistributable"
3956 elif enabled gplv3; then
3957     license="GPL version 3 or later"
3958 elif enabled lgplv3; then
3959     license="LGPL version 3 or later"
3960 elif enabled gpl; then
3961     license="GPL version 2 or later"
3962 else
3963     license="LGPL version 2.1 or later"
3964 fi
3965
3966 enabled_all gnutls openssl &&
3967     die "GnuTLS and OpenSSL must not be enabled at the same time."
3968
3969 enabled_all gnutls mbedtls &&
3970     die "GnuTLS and mbedTLS must not be enabled at the same time."
3971
3972 enabled_all openssl mbedtls &&
3973     die "OpenSSL and mbedTLS must not be enabled at the same time."
3974
3975 # Disable all the library-specific components if the library itself
3976 # is disabled, see AVCODEC_LIST and following _LIST variables.
3977
3978 disable_components(){
3979     disabled ${1} && disable $(
3980         eval components="\$$(toupper ${1})_COMPONENTS"
3981         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
3982     )
3983 }
3984
3985 map 'disable_components $v' $LIBRARY_LIST
3986
3987 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
3988 set >> $logfile
3989
3990 test -n "$valgrind" && toolchain="valgrind-memcheck"
3991
3992 enabled ossfuzz && ! echo $CFLAGS | grep -q -- "-fsanitize="  && ! echo $CFLAGS | grep -q -- "-fcoverage-mapping" &&{
3993     add_cflags  -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp -fno-omit-frame-pointer
3994     add_ldflags -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp
3995 }
3996
3997 case "$toolchain" in
3998     *-asan)
3999         cc_default="${toolchain%-asan}"
4000         add_cflags  -fsanitize=address
4001         add_ldflags -fsanitize=address
4002     ;;
4003     *-msan)
4004         cc_default="${toolchain%-msan}"
4005         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
4006         add_ldflags -fsanitize=memory
4007     ;;
4008     *-tsan)
4009         cc_default="${toolchain%-tsan}"
4010         add_cflags  -fsanitize=thread
4011         add_ldflags -fsanitize=thread
4012         case "$toolchain" in
4013             gcc-tsan)
4014                 add_cflags  -fPIC
4015                 add_ldflags -fPIC
4016                 ;;
4017         esac
4018     ;;
4019     *-usan)
4020         cc_default="${toolchain%-usan}"
4021         add_cflags  -fsanitize=undefined
4022         add_ldflags -fsanitize=undefined
4023     ;;
4024     valgrind-*)
4025         target_exec_default="valgrind"
4026         case "$toolchain" in
4027             valgrind-massif)
4028                 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"
4029                 ;;
4030             valgrind-memcheck)
4031                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
4032                 ;;
4033         esac
4034     ;;
4035     msvc)
4036         # Check whether the current MSVC version needs the C99 converter.
4037         # From MSVC 2013 (compiler major version 18) onwards, it does actually
4038         # support enough of C99 to build ffmpeg. Default to the new
4039         # behaviour if the regexp was unable to match anything, since this
4040         # successfully parses the version number of existing supported
4041         # versions that require the converter (MSVC 2010 and 2012).
4042         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
4043         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
4044             cc_default="cl"
4045             cxx_default="cl"
4046         else
4047             die "Unsupported MSVC version (2013 or newer required)"
4048         fi
4049         ld_default="$source_path/compat/windows/mslink"
4050         nm_default="dumpbin -symbols"
4051         ar_default="lib"
4052         case "$arch" in
4053         aarch64|arm64)
4054             as_default="armasm64"
4055             ;;
4056         arm*)
4057             as_default="armasm"
4058             ;;
4059         esac
4060         target_os_default="win32"
4061         # Use a relative path for TMPDIR. This makes sure all the
4062         # ffconf temp files are written with a relative path, avoiding
4063         # issues with msys/win32 path conversion for MSVC parameters
4064         # such as -Fo<file> or -out:<file>.
4065         TMPDIR=.
4066     ;;
4067     icl)
4068         cc_default="icl"
4069         ld_default="xilink"
4070         nm_default="dumpbin -symbols"
4071         ar_default="xilib"
4072         target_os_default="win32"
4073         TMPDIR=.
4074     ;;
4075     gcov)
4076         add_cflags  -fprofile-arcs -ftest-coverage
4077         add_ldflags -fprofile-arcs -ftest-coverage
4078     ;;
4079     llvm-cov)
4080         add_cflags -fprofile-arcs -ftest-coverage
4081         add_ldflags --coverage
4082     ;;
4083     hardened)
4084         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
4085         add_cflags   -fno-strict-overflow -fstack-protector-all
4086         add_ldflags  -Wl,-z,relro -Wl,-z,now
4087         add_cflags   -fPIE
4088         add_ldexeflags -fPIE -pie
4089     ;;
4090     ?*)
4091         die "Unknown toolchain $toolchain"
4092     ;;
4093 esac
4094
4095 if test -n "$cross_prefix"; then
4096     test -n "$arch" && test -n "$target_os" ||
4097         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
4098     enable cross_compile
4099 fi
4100
4101 ar_default="${cross_prefix}${ar_default}"
4102 cc_default="${cross_prefix}${cc_default}"
4103 cxx_default="${cross_prefix}${cxx_default}"
4104 nm_default="${cross_prefix}${nm_default}"
4105 pkg_config_default="${cross_prefix}${pkg_config_default}"
4106 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
4107     ranlib_default="${cross_prefix}${ranlib_default} -D"
4108 else
4109     ranlib_default="${cross_prefix}${ranlib_default}"
4110 fi
4111 strip_default="${cross_prefix}${strip_default}"
4112 windres_default="${cross_prefix}${windres_default}"
4113
4114 sysinclude_default="${sysroot}/usr/include"
4115
4116 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
4117     target_exec target_os x86asmexe nvcc
4118 enabled cross_compile || host_cc_default=$cc
4119 set_default host_cc
4120
4121 pkg_config_fail_message=""
4122 if ! $pkg_config --version >/dev/null 2>&1; then
4123     warn "$pkg_config not found, library detection may fail."
4124     pkg_config=false
4125 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
4126     pkg_config_fail_message="
4127 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
4128 fi
4129
4130 if test $doxygen != $doxygen_default && \
4131   ! $doxygen --version >/dev/null 2>&1; then
4132     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
4133 fi
4134
4135 exesuf() {
4136     case $1 in
4137         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
4138     esac
4139 }
4140
4141 EXESUF=$(exesuf $target_os)
4142 HOSTEXESUF=$(exesuf $host_os)
4143
4144 # set temporary file name
4145 : ${TMPDIR:=$TEMPDIR}
4146 : ${TMPDIR:=$TMP}
4147 : ${TMPDIR:=/tmp}
4148
4149 if [ -n "$tempprefix" ] ; then
4150     mktemp(){
4151         tmpname="$tempprefix.${HOSTNAME}.${UID}"
4152         echo "$tmpname"
4153         mkdir "$tmpname"
4154     }
4155 elif ! test_cmd mktemp -u XXXXXX; then
4156     # simple replacement for missing mktemp
4157     # NOT SAFE FOR GENERAL USE
4158     mktemp(){
4159         tmpname="${2%%XXX*}.${HOSTNAME}.${UID}.$$"
4160         echo "$tmpname"
4161         mkdir "$tmpname"
4162     }
4163 fi
4164
4165 FFTMPDIR=$(mktemp -d "${TMPDIR}/ffconf.XXXXXXXX" 2> /dev/null) ||
4166     die "Unable to create temporary directory in $TMPDIR."
4167
4168 tmpfile(){
4169     tmp="${FFTMPDIR}/test"$2
4170     (set -C; exec > $tmp) 2> /dev/null ||
4171         die "Unable to create temporary file in $FFTMPDIR."
4172     eval $1=$tmp
4173 }
4174
4175 trap 'rm -rf -- "$FFTMPDIR"' EXIT
4176 trap 'exit 2' INT
4177
4178 tmpfile TMPASM .asm
4179 tmpfile TMPC   .c
4180 tmpfile TMPCPP .cpp
4181 tmpfile TMPE   $EXESUF
4182 tmpfile TMPH   .h
4183 tmpfile TMPM   .m
4184 tmpfile TMPO   .o
4185 tmpfile TMPS   .S
4186 tmpfile TMPSH  .sh
4187 tmpfile TMPV   .ver
4188
4189 unset -f mktemp
4190
4191 chmod +x $TMPE
4192
4193 # make sure we can execute files in $TMPDIR
4194 cat > $TMPSH 2>> $logfile <<EOF
4195 #! /bin/sh
4196 EOF
4197 chmod +x $TMPSH >> $logfile 2>&1
4198 if ! $TMPSH >> $logfile 2>&1; then
4199     cat <<EOF
4200 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
4201 variable to another directory and make sure that it is not mounted noexec.
4202 EOF
4203     die "Sanity test failed."
4204 fi
4205
4206 armasm_flags(){
4207     for flag; do
4208         case $flag in
4209             # Filter out MSVC cl.exe options from cflags that shouldn't
4210             # be passed to gas-preprocessor
4211             -M[TD]*)                                            ;;
4212             *)                  echo $flag                      ;;
4213         esac
4214    done
4215 }
4216
4217 cparser_flags(){
4218     for flag; do
4219         case $flag in
4220             -Wno-switch)             echo -Wno-switch-enum ;;
4221             -Wno-format-zero-length) ;;
4222             -Wdisabled-optimization) ;;
4223             -Wno-pointer-sign)       echo -Wno-other ;;
4224             *)                       echo $flag ;;
4225         esac
4226     done
4227 }
4228
4229 msvc_common_flags(){
4230     for flag; do
4231         case $flag in
4232             # In addition to specifying certain flags under the compiler
4233             # specific filters, they must be specified here as well or else the
4234             # generic catch all at the bottom will print the original flag.
4235             -Wall)                ;;
4236             -Wextra)              ;;
4237             -std=c99)             ;;
4238             # Common flags
4239             -fomit-frame-pointer) ;;
4240             -g)                   echo -Z7 ;;
4241             -fno-math-errno)      ;;
4242             -fno-common)          ;;
4243             -fno-signed-zeros)    ;;
4244             -fPIC)                ;;
4245             -mthumb)              ;;
4246             -march=*)             ;;
4247             -lz)                  echo zlib.lib ;;
4248             -lx264)               echo libx264.lib ;;
4249             -lstdc++)             ;;
4250             -l*)                  echo ${flag#-l}.lib ;;
4251             -LARGEADDRESSAWARE)   echo $flag ;;
4252             -L*)                  echo -libpath:${flag#-L} ;;
4253             *)                    echo $flag ;;
4254         esac
4255     done
4256 }
4257
4258 msvc_flags(){
4259     msvc_common_flags "$@"
4260     for flag; do
4261         case $flag in
4262             -Wall)                echo -W3 -wd4018 -wd4146 -wd4244 -wd4305     \
4263                                        -wd4554 ;;
4264             -Wextra)              echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
4265                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
4266                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
4267                                        -wd4307 \
4268                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
4269         esac
4270     done
4271 }
4272
4273 icl_flags(){
4274     msvc_common_flags "$@"
4275     for flag; do
4276         case $flag in
4277             # Despite what Intel's documentation says -Wall, which is supported
4278             # on Windows, does enable remarks so disable them here.
4279             -Wall)                echo $flag -Qdiag-disable:remark ;;
4280             -std=c99)             echo -Qstd=c99 ;;
4281             -flto)                echo -ipo ;;
4282         esac
4283     done
4284 }
4285
4286 icc_flags(){
4287     for flag; do
4288         case $flag in
4289             -flto)                echo -ipo ;;
4290             *)                    echo $flag ;;
4291         esac
4292     done
4293 }
4294
4295 suncc_flags(){
4296     for flag; do
4297         case $flag in
4298             -march=*|-mcpu=*)
4299                 case "${flag#*=}" in
4300                     native)                   echo -xtarget=native       ;;
4301                     v9|niagara)               echo -xarch=sparc          ;;
4302                     ultrasparc)               echo -xarch=sparcvis       ;;
4303                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
4304                     i586|pentium)             echo -xchip=pentium        ;;
4305                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
4306                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
4307                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
4308                     pentium4*)          echo -xtarget=pentium4           ;;
4309                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
4310                     *-sse3)             echo -xarch=sse3                 ;;
4311                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
4312                     bonnell)                   echo -xarch=ssse3         ;;
4313                     corei7|nehalem)            echo -xtarget=nehalem     ;;
4314                     westmere)                  echo -xtarget=westmere    ;;
4315                     silvermont)                echo -xarch=sse4_2        ;;
4316                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
4317                     core-avx*|ivybridge|haswell|broadwell|skylake*|knl)
4318                                                echo -xarch=avx           ;;
4319                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
4320                     btver1)                    echo -xarch=amdsse4a      ;;
4321                     btver2|bdver*|znver*)      echo -xarch=avx           ;;
4322                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
4323                     k8|opteron|athlon64|athlon-fx)
4324                                                echo -xarch=sse2a         ;;
4325                     athlon*)                   echo -xarch=pentium_proa  ;;
4326                 esac
4327                 ;;
4328             -std=c99)             echo -xc99              ;;
4329             -fomit-frame-pointer) echo -xregs=frameptr    ;;
4330             -fPIC)                echo -KPIC -xcode=pic32 ;;
4331             -W*,*)                echo $flag              ;;
4332             -f*-*|-W*|-mimpure-text)                      ;;
4333             -shared)              echo -G                 ;;
4334             *)                    echo $flag              ;;
4335         esac
4336     done
4337 }
4338
4339 probe_cc(){
4340     pfx=$1
4341     _cc=$2
4342     first=$3
4343
4344     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
4345     unset _ld_o _ldflags _ld_lib _ld_path
4346     unset _depflags _DEPCMD _DEPFLAGS
4347     _flags_filter=echo
4348
4349     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
4350         true # no-op to avoid reading stdin in following checks
4351     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
4352         _type=llvm_gcc
4353         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
4354         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
4355         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4356         _cflags_speed='-O3'
4357         _cflags_size='-Os'
4358     elif $_cc -v 2>&1 | grep -qi ^gcc; then
4359         _type=gcc
4360         gcc_version=$($_cc --version | head -n1)
4361         gcc_basever=$($_cc -dumpversion)
4362         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
4363         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
4364         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
4365         case $gcc_basever in
4366             2) ;;
4367             2.*) ;;
4368             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
4369         esac
4370         if [ "$first" = true ]; then
4371             case $gcc_basever in
4372                 4.2*)
4373                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
4374             esac
4375         fi
4376         _cflags_speed='-O3'
4377         _cflags_size='-Os'
4378     elif $_cc --version 2>/dev/null | grep -q ^icc; then
4379         _type=icc
4380         _ident=$($_cc --version | head -n1)
4381         _depflags='-MMD'
4382         _cflags_speed='-O3'
4383         _cflags_size='-Os'
4384         _cflags_noopt='-O1'
4385         _flags_filter=icc_flags
4386     elif $_cc -v 2>&1 | grep -q xlc; then
4387         _type=xlc
4388         _ident=$($_cc -qversion 2>/dev/null | head -n1)
4389         _cflags_speed='-O5'
4390         _cflags_size='-O5 -qcompact'
4391     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
4392         test -d "$sysroot" || die "No valid sysroot specified."
4393         _type=armcc
4394         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
4395         armcc_conf="$PWD/armcc.conf"
4396         $_cc --arm_linux_configure                 \
4397              --arm_linux_config_file="$armcc_conf" \
4398              --configure_sysroot="$sysroot"        \
4399              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
4400              die "Error creating armcc configuration file."
4401         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
4402         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
4403         as_default="${cross_prefix}gcc"
4404         _depflags='-MMD'
4405         _cflags_speed='-O3'
4406         _cflags_size='-Os'
4407     elif $_cc -v 2>&1 | grep -q clang && ! $_cc -? > /dev/null 2>&1; then
4408         _type=clang
4409         _ident=$($_cc --version 2>/dev/null | head -n1)
4410         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4411         _cflags_speed='-O3'
4412         _cflags_size='-Oz'
4413     elif $_cc -V 2>&1 | grep -q Sun; then
4414         _type=suncc
4415         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
4416         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
4417         _DEPFLAGS='-xM1 -xc99'
4418         _ldflags='-std=c99'
4419         _cflags_speed='-O5'
4420         _cflags_size='-O5 -xspace'
4421         _flags_filter=suncc_flags
4422     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
4423         _type=pathscale
4424         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4425         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4426         _cflags_speed='-O2'
4427         _cflags_size='-Os'
4428         _flags_filter='filter_out -Wdisabled-optimization'
4429     elif $_cc -v 2>&1 | grep -q Open64; then
4430         _type=open64
4431         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4432         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4433         _cflags_speed='-O2'
4434         _cflags_size='-Os'
4435         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
4436     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
4437         _type=armasm
4438         _ident=$($_cc | head -n1)
4439         # 4509: "This form of conditional instruction is deprecated"
4440         _flags="-nologo -ignore 4509"
4441         _flags_filter=armasm_flags
4442     elif $_cc 2>&1 | grep -q Intel; then
4443         _type=icl
4444         _ident=$($_cc 2>&1 | head -n1)
4445         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
4446         # Not only is O3 broken on 13.x+ but it is slower on all previous
4447         # versions (tested) as well.
4448         _cflags_speed="-O2"
4449         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
4450         if $_cc 2>&1 | grep -q Linker; then
4451             _ld_o='-out:$@'
4452         else
4453             _ld_o='-Fe$@'
4454         fi
4455         _cc_o='-Fo$@'
4456         _cc_e='-P'
4457         _flags_filter=icl_flags
4458         _ld_lib='lib%.a'
4459         _ld_path='-libpath:'
4460         # -Qdiag-error to make icl error when seeing certain unknown arguments
4461         _flags='-nologo -Qdiag-error:4044,10157'
4462         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
4463         # with MSVC which enables it by default.
4464         _cflags='-Qms0 -Qvec- -Qsimd- -GS -fp:precise'
4465         disable stripping
4466     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
4467         # lld can emulate multiple different linkers; in ms link.exe mode,
4468         # the -? parameter gives the help output which contains an identifyable
4469         # string, while it gives an error in other modes.
4470         _type=lld-link
4471         # The link.exe mode doesn't have a switch for getting the version,
4472         # but we can force it back to gnu mode and get the version from there.
4473         _ident=$($_cc -flavor gnu --version 2>/dev/null)
4474         _ld_o='-out:$@'
4475         _flags_filter=msvc_flags
4476         _ld_lib='lib%.a'
4477         _ld_path='-libpath:'
4478     elif $_cc -nologo- 2>&1 | grep -q Microsoft || { $_cc -v 2>&1 | grep -q clang && $_cc -? > /dev/null 2>&1; }; then
4479         _type=msvc
4480         _ident=$($_cc 2>&1 | head -n1 | tr -d '\r')
4481         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
4482         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
4483         _cflags_speed="-O2"
4484         _cflags_size="-O1"
4485         _cflags_noopt="-O1"
4486         if $_cc -nologo- 2>&1 | grep -q Linker; then
4487             _ld_o='-out:$@'
4488         else
4489             _ld_o='-Fe$@'
4490         fi
4491         _cc_o='-Fo$@'
4492         _cc_e='-P -Fi$@'
4493         _flags_filter=msvc_flags
4494         _ld_lib='lib%.a'
4495         _ld_path='-libpath:'
4496         _flags='-nologo'
4497         disable stripping
4498     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
4499         _type=cparser
4500         _ident=$($_cc --version | head -n1)
4501         _depflags='-MMD'
4502         _cflags_speed='-O4'
4503         _cflags_size='-O2'
4504         _flags_filter=cparser_flags
4505     fi
4506
4507     eval ${pfx}_type=\$_type
4508     eval ${pfx}_ident=\$_ident
4509 }
4510
4511 set_ccvars(){
4512     eval ${1}_C=\${_cc_c-\${${1}_C}}
4513     eval ${1}_E=\${_cc_e-\${${1}_E}}
4514     eval ${1}_O=\${_cc_o-\${${1}_O}}
4515
4516     if [ -n "$_depflags" ]; then
4517         eval ${1}_DEPFLAGS=\$_depflags
4518     else
4519         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
4520         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
4521         eval DEP${1}FLAGS=\$_flags
4522     fi
4523 }
4524
4525 probe_cc cc "$cc" "true"
4526 cflags_filter=$_flags_filter
4527 cflags_speed=$_cflags_speed
4528 cflags_size=$_cflags_size
4529 cflags_noopt=$_cflags_noopt
4530 add_cflags $_flags $_cflags
4531 cc_ldflags=$_ldflags
4532 set_ccvars CC
4533 set_ccvars CXX
4534
4535 probe_cc hostcc "$host_cc"
4536 host_cflags_filter=$_flags_filter
4537 host_cflags_speed=$_cflags_speed
4538 add_host_cflags  $_flags $_cflags
4539 set_ccvars HOSTCC
4540
4541 test -n "$cc_type" && enable $cc_type ||
4542     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4543
4544 : ${as_default:=$cc}
4545 : ${objcc_default:=$cc}
4546 : ${dep_cc_default:=$cc}
4547 : ${ld_default:=$cc}
4548 : ${host_ld_default:=$host_cc}
4549 set_default ar as objcc dep_cc ld ln_s host_ld windres
4550
4551 probe_cc as "$as"
4552 asflags_filter=$_flags_filter
4553 add_asflags $_flags $_cflags
4554 set_ccvars AS
4555
4556 probe_cc objcc "$objcc"
4557 objcflags_filter=$_flags_filter
4558 add_objcflags $_flags $_cflags
4559 set_ccvars OBJC
4560
4561 probe_cc ld "$ld"
4562 ldflags_filter=$_flags_filter
4563 add_ldflags $_flags $_ldflags
4564 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4565 LD_O=${_ld_o-$LD_O}
4566 LD_LIB=${_ld_lib-$LD_LIB}
4567 LD_PATH=${_ld_path-$LD_PATH}
4568
4569 probe_cc hostld "$host_ld"
4570 host_ldflags_filter=$_flags_filter
4571 add_host_ldflags $_flags $_ldflags
4572 HOSTLD_O=${_ld_o-$HOSTLD_O}
4573
4574 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4575     probe_cc depcc "$dep_cc"
4576     CCDEP=${_DEPCMD:-$DEPCMD}
4577     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4578     DEPCCFLAGS=$_flags
4579 fi
4580
4581 if $ar 2>&1 | grep -q Microsoft; then
4582     arflags="-nologo"
4583     ar_o='-out:$@'
4584 elif $ar 2>&1 | grep -q "\[D\] "; then
4585     arflags="rcD"
4586     ar_o='$@'
4587 else
4588     arflags="rc"
4589     ar_o='$@'
4590 fi
4591
4592 add_cflags $extra_cflags
4593 add_cxxflags $extra_cxxflags
4594 add_objcflags $extra_objcflags
4595 add_asflags $extra_cflags
4596
4597 if test -n "$sysroot"; then
4598     case "$cc_type" in
4599         gcc|llvm_gcc|clang)
4600             add_cppflags --sysroot="$sysroot"
4601             add_ldflags --sysroot="$sysroot"
4602         ;;
4603     esac
4604 fi
4605
4606 if test "$cpu" = host; then
4607     enabled cross_compile &&
4608         die "--cpu=host makes no sense when cross-compiling."
4609
4610     case "$cc_type" in
4611         gcc|llvm_gcc)
4612             check_native(){
4613                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4614                 sed -n "/cc1.*$1=/{
4615                             s/.*$1=\\([^ ]*\\).*/\\1/
4616                             p
4617                             q
4618                         }" $TMPE
4619             }
4620             cpu=$(check_native -march || check_native -mcpu)
4621         ;;
4622         clang)
4623             check_native(){
4624                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4625                 sed -n "/cc1.*-target-cpu /{
4626                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4627                             p
4628                             q
4629                         }" $TMPE
4630             }
4631             cpu=$(check_native -march)
4632         ;;
4633     esac
4634
4635     test "${cpu:-host}" = host &&
4636         die "--cpu=host not supported with compiler $cc"
4637 fi
4638
4639 # Deal with common $arch aliases
4640 case "$arch" in
4641     aarch64|arm64)
4642         arch="aarch64"
4643     ;;
4644     arm*|iPad*|iPhone*)
4645         arch="arm"
4646     ;;
4647     mips*|IP*)
4648         case "$arch" in
4649         *el)
4650             add_cppflags -EL
4651             add_ldflags -EL
4652         ;;
4653         *eb)
4654             add_cppflags -EB
4655             add_ldflags -EB
4656         ;;
4657         esac
4658         arch="mips"
4659     ;;
4660     parisc*|hppa*)
4661         arch="parisc"
4662     ;;
4663     "Power Macintosh"|ppc*|powerpc*)
4664         arch="ppc"
4665     ;;
4666     s390|s390x)
4667         arch="s390"
4668     ;;
4669     sh4|sh)
4670         arch="sh4"
4671     ;;
4672     sun4*|sparc*)
4673         arch="sparc"
4674     ;;
4675     tilegx|tile-gx)
4676         arch="tilegx"
4677     ;;
4678     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4679         arch="x86"
4680     ;;
4681 esac
4682
4683 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4684 enable $arch
4685
4686 # Add processor-specific flags
4687 if enabled aarch64; then
4688
4689     case $cpu in
4690         armv*)
4691             cpuflags="-march=$cpu"
4692         ;;
4693         *)
4694             cpuflags="-mcpu=$cpu"
4695         ;;
4696     esac
4697
4698 elif enabled alpha; then
4699
4700     cpuflags="-mcpu=$cpu"
4701
4702 elif enabled arm; then
4703
4704     check_arm_arch() {
4705         test_cpp_condition stddef.h \
4706             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4707             $cpuflags
4708     }
4709
4710     probe_arm_arch() {
4711         if   check_arm_arch 4;        then echo armv4
4712         elif check_arm_arch 4T;       then echo armv4t
4713         elif check_arm_arch 5;        then echo armv5
4714         elif check_arm_arch 5E;       then echo armv5e
4715         elif check_arm_arch 5T;       then echo armv5t
4716         elif check_arm_arch 5TE;      then echo armv5te
4717         elif check_arm_arch 5TEJ;     then echo armv5te
4718         elif check_arm_arch 6;        then echo armv6
4719         elif check_arm_arch 6J;       then echo armv6j
4720         elif check_arm_arch 6K;       then echo armv6k
4721         elif check_arm_arch 6Z;       then echo armv6z
4722         elif check_arm_arch 6KZ;      then echo armv6zk
4723         elif check_arm_arch 6ZK;      then echo armv6zk
4724         elif check_arm_arch 6T2;      then echo armv6t2
4725         elif check_arm_arch 7;        then echo armv7
4726         elif check_arm_arch 7A  7_A;  then echo armv7-a
4727         elif check_arm_arch 7S;       then echo armv7-a
4728         elif check_arm_arch 7R  7_R;  then echo armv7-r
4729         elif check_arm_arch 7M  7_M;  then echo armv7-m
4730         elif check_arm_arch 7EM 7E_M; then echo armv7-m
4731         elif check_arm_arch 8A  8_A;  then echo armv8-a
4732         fi
4733     }
4734
4735     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4736
4737     case $cpu in
4738         armv*)
4739             cpuflags="-march=$cpu"
4740             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4741         ;;
4742         *)
4743             cpuflags="-mcpu=$cpu"
4744             case $cpu in
4745                 cortex-a*)                               subarch=armv7a  ;;
4746                 cortex-r*)                               subarch=armv7r  ;;
4747                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4748                 arm11*)                                  subarch=armv6   ;;
4749                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4750                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4751                 *)                             subarch=$(probe_arm_arch) ;;
4752             esac
4753         ;;
4754     esac
4755
4756     case "$subarch" in
4757         armv5t*)    enable fast_clz                ;;
4758         armv[6-8]*)
4759             enable fast_clz
4760             disabled fast_unaligned || enable fast_unaligned
4761             ;;
4762     esac
4763
4764 elif enabled avr32; then
4765
4766     case $cpu in
4767         ap7[02]0[0-2])
4768             subarch="avr32_ap"
4769             cpuflags="-mpart=$cpu"
4770         ;;
4771         ap)
4772             subarch="avr32_ap"
4773             cpuflags="-march=$cpu"
4774         ;;
4775         uc3[ab]*)
4776             subarch="avr32_uc"
4777             cpuflags="-mcpu=$cpu"
4778         ;;
4779         uc)
4780             subarch="avr32_uc"
4781             cpuflags="-march=$cpu"
4782         ;;
4783     esac
4784
4785 elif enabled bfin; then
4786
4787     cpuflags="-mcpu=$cpu"
4788
4789 elif enabled mips; then
4790
4791     cpuflags="-march=$cpu"
4792
4793     if [ "$cpu" != "generic" ]; then
4794         disable mips32r2
4795         disable mips32r5
4796         disable mips64r2
4797         disable mips32r6
4798         disable mips64r6
4799         disable loongson2
4800         disable loongson3
4801
4802         case $cpu in
4803             24kc|24kf*|24kec|34kc|1004kc|24kef*|34kf*|1004kf*|74kc|74kf)
4804                 enable mips32r2
4805                 disable msa
4806             ;;
4807             p5600|i6400|p6600)
4808                 disable mipsdsp
4809                 disable mipsdspr2
4810             ;;
4811             loongson*)
4812                 enable loongson2
4813                 enable loongson3
4814                 enable local_aligned
4815                 enable simd_align_16
4816                 enable fast_64bit
4817                 enable fast_clz
4818                 enable fast_cmov
4819                 enable fast_unaligned
4820                 disable aligned_stack
4821                 disable mipsfpu
4822                 disable mipsdsp
4823                 disable mipsdspr2
4824                 # When gcc version less than 5.3.0, add -fno-expensive-optimizations flag.
4825                 if [ $cc == gcc ]; then
4826                     gcc_version=$(gcc -dumpversion)
4827                     if [ "$(echo "$gcc_version 5.3.0" | tr " " "\n" | sort -rV | head -n 1)" == "$gcc_version" ]; then
4828                         expensive_optimization_flag=""
4829                     else
4830                         expensive_optimization_flag="-fno-expensive-optimizations"
4831                     fi
4832                 fi
4833                 case $cpu in
4834                     loongson3*)
4835                         cpuflags="-march=loongson3a -mhard-float $expensive_optimization_flag"
4836                     ;;
4837                     loongson2e)
4838                         cpuflags="-march=loongson2e -mhard-float $expensive_optimization_flag"
4839                     ;;
4840                     loongson2f)
4841                         cpuflags="-march=loongson2f -mhard-float $expensive_optimization_flag"
4842                     ;;
4843                 esac
4844             ;;
4845             *)
4846                 # Unknown CPU. Disable everything.
4847                 warn "unknown CPU. Disabling all MIPS optimizations."
4848                 disable mipsfpu
4849                 disable mipsdsp
4850                 disable mipsdspr2
4851                 disable msa
4852                 disable mmi
4853             ;;
4854         esac
4855
4856         case $cpu in
4857             24kc)
4858                 disable mipsfpu
4859                 disable mipsdsp
4860                 disable mipsdspr2
4861             ;;
4862             24kf*)
4863                 disable mipsdsp
4864                 disable mipsdspr2
4865             ;;
4866             24kec|34kc|1004kc)
4867                 disable mipsfpu
4868                 disable mipsdspr2
4869             ;;
4870             24kef*|34kf*|1004kf*)
4871                 disable mipsdspr2
4872             ;;
4873             74kc)
4874                 disable mipsfpu
4875             ;;
4876             p5600)
4877                 enable mips32r5
4878                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
4879             ;;
4880             i6400)
4881                 enable mips64r6
4882                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4883             ;;
4884             p6600)
4885                 enable mips64r6
4886                 check_cflags "-mtune=p6600 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4887             ;;
4888         esac
4889     else
4890         # We do not disable anything. Is up to the user to disable the unwanted features.
4891         warn 'generic cpu selected'
4892     fi
4893
4894 elif enabled ppc; then
4895
4896     disable ldbrx
4897
4898     case $(tolower $cpu) in
4899         601|ppc601|powerpc601)
4900             cpuflags="-mcpu=601"
4901             disable altivec
4902         ;;
4903         603*|ppc603*|powerpc603*)
4904             cpuflags="-mcpu=603"
4905             disable altivec
4906         ;;
4907         604*|ppc604*|powerpc604*)
4908             cpuflags="-mcpu=604"
4909             disable altivec
4910         ;;
4911         g3|75*|ppc75*|powerpc75*)
4912             cpuflags="-mcpu=750"
4913             disable altivec
4914         ;;
4915         g4|745*|ppc745*|powerpc745*)
4916             cpuflags="-mcpu=7450"
4917             disable vsx
4918         ;;
4919         74*|ppc74*|powerpc74*)
4920             cpuflags="-mcpu=7400"
4921             disable vsx
4922         ;;
4923         g5|970|ppc970|powerpc970)
4924             cpuflags="-mcpu=970"
4925             disable vsx
4926         ;;
4927         power[3-6]*)
4928             cpuflags="-mcpu=$cpu"
4929             disable vsx
4930         ;;
4931         power[7-8]*)
4932             cpuflags="-mcpu=$cpu"
4933         ;;
4934         cell)
4935             cpuflags="-mcpu=cell"
4936             enable ldbrx
4937             disable vsx
4938         ;;
4939         e500mc)
4940             cpuflags="-mcpu=e500mc"
4941             disable altivec
4942         ;;
4943         e500v2)
4944             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
4945             disable altivec
4946             disable dcbzl
4947         ;;
4948         e500)
<