configure: [loongson] revert no-expensive-optimizations
[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_asflags(){
903     append ASFLAGS $($asflags_filter "$@")
904 }
905
906 add_objcflags(){
907     append OBJCFLAGS $($objcflags_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 "$@")
920 }
921
922 add_stripflags(){
923     append ASMSTRIPFLAGS "$@"
924 }
925
926 add_extralibs(){
927     prepend extralibs $($ldflags_filter "$@")
928 }
929
930 add_host_cppflags(){
931     append host_cppflags "$@"
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_o(){
959     eval printf '%s\\n' $CC_O
960 }
961
962 cc_e(){
963     eval printf '%s\\n' $CC_E
964 }
965
966 test_cc(){
967     log test_cc "$@"
968     cat > $TMPC
969     log_file $TMPC
970     test_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
971 }
972
973 test_cxx(){
974     log test_cxx "$@"
975     cat > $TMPCPP
976     log_file $TMPCPP
977     test_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
978 }
979
980 test_objcc(){
981     log test_objcc "$@"
982     cat > $TMPM
983     log_file $TMPM
984     test_cmd $objcc -Werror=missing-prototypes $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPM
985 }
986
987 test_cpp(){
988     log test_cpp "$@"
989     cat > $TMPC
990     log_file $TMPC
991     test_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
992 }
993
994 as_o(){
995     eval printf '%s\\n' $AS_O
996 }
997
998 test_as(){
999     log test_as "$@"
1000     cat > $TMPS
1001     log_file $TMPS
1002     test_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
1003 }
1004
1005 x86asm_o(){
1006     eval printf '%s\\n' $X86ASM_O
1007 }
1008
1009 test_x86asm(){
1010     log test_x86asm "$@"
1011     echo "$1" > $TMPASM
1012     log_file $TMPASM
1013     shift
1014     test_cmd $x86asmexe $X86ASMFLAGS -Werror "$@" $(x86asm_o $TMPO) $TMPASM
1015 }
1016
1017 check_cmd(){
1018     log check_cmd "$@"
1019     cmd=$1
1020     disabled $cmd && return
1021     disable $cmd
1022     test_cmd $@ && enable $cmd
1023 }
1024
1025 check_as(){
1026     log check_as "$@"
1027     name=$1
1028     code=$2
1029     shift 2
1030     disable $name
1031     test_as $@ <<EOF && enable $name
1032 $code
1033 EOF
1034 }
1035
1036 check_inline_asm(){
1037     log check_inline_asm "$@"
1038     name="$1"
1039     code="$2"
1040     shift 2
1041     disable $name
1042     test_cc "$@" <<EOF && enable $name
1043 void foo(void){ __asm__ volatile($code); }
1044 EOF
1045 }
1046
1047 check_inline_asm_flags(){
1048     log check_inline_asm_flags "$@"
1049     name="$1"
1050     code="$2"
1051     flags=''
1052     shift 2
1053     while [ "$1" != "" ]; do
1054       append flags $1
1055       shift
1056     done;
1057     disable $name
1058     cat > $TMPC <<EOF
1059 void foo(void){ __asm__ volatile($code); }
1060 EOF
1061     log_file $TMPC
1062     test_cmd $cc $CPPFLAGS $CFLAGS $flags "$@" $CC_C $(cc_o $TMPO) $TMPC &&
1063     enable $name && add_cflags $flags && add_asflags $flags && add_ldflags $flags
1064 }
1065
1066 check_insn(){
1067     log check_insn "$@"
1068     check_inline_asm ${1}_inline "\"$2\""
1069     check_as ${1}_external "$2"
1070 }
1071
1072 check_x86asm(){
1073     log check_x86asm "$@"
1074     name=$1
1075     shift
1076     disable $name
1077     test_x86asm "$@" && enable $name
1078 }
1079
1080 ld_o(){
1081     eval printf '%s\\n' $LD_O
1082 }
1083
1084 test_ld(){
1085     log test_ld "$@"
1086     type=$1
1087     shift 1
1088     flags=$(filter_out '-l*|*.so' $@)
1089     libs=$(filter '-l*|*.so' $@)
1090     test_$type $($cflags_filter $flags) || return
1091     flags=$($ldflags_filter $flags)
1092     libs=$($ldflags_filter $libs)
1093     test_cmd $ld $LDFLAGS $LDEXEFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
1094 }
1095
1096 check_ld(){
1097     log check_ld "$@"
1098     type=$1
1099     name=$2
1100     shift 2
1101     disable $name
1102     test_ld $type $@ && enable $name
1103 }
1104
1105 print_include(){
1106     hdr=$1
1107     test "${hdr%.h}" = "${hdr}" &&
1108         echo "#include $hdr"    ||
1109         echo "#include <$hdr>"
1110 }
1111
1112 test_code(){
1113     log test_code "$@"
1114     check=$1
1115     headers=$2
1116     code=$3
1117     shift 3
1118     {
1119         for hdr in $headers; do
1120             print_include $hdr
1121         done
1122         echo "int main(void) { $code; return 0; }"
1123     } | test_$check "$@"
1124 }
1125
1126 check_cppflags(){
1127     log check_cppflags "$@"
1128     test_cpp "$@" <<EOF && append CPPFLAGS "$@"
1129 #include <stdlib.h>
1130 EOF
1131 }
1132
1133 test_cflags(){
1134     log test_cflags "$@"
1135     set -- $($cflags_filter "$@")
1136     test_cc "$@" <<EOF
1137 int x;
1138 EOF
1139 }
1140
1141 check_cflags(){
1142     log check_cflags "$@"
1143     test_cflags "$@" && add_cflags "$@"
1144 }
1145
1146 check_cxxflags(){
1147     log check_cxxflags "$@"
1148     set -- $($cflags_filter "$@")
1149     test_cxx "$@" <<EOF && append CXXFLAGS "$@"
1150 int x;
1151 EOF
1152 }
1153
1154 test_objcflags(){
1155     log test_objcflags "$@"
1156     set -- $($objcflags_filter "$@")
1157     test_objcc "$@" <<EOF
1158 int x;
1159 EOF
1160 }
1161
1162 check_objcflags(){
1163     log check_objcflags "$@"
1164     test_objcflags "$@" && add_objcflags "$@"
1165 }
1166
1167 test_ldflags(){
1168     log test_ldflags "$@"
1169     set -- $($ldflags_filter "$@")
1170     test_ld "cc" "$@" <<EOF
1171 int main(void){ return 0; }
1172 EOF
1173 }
1174
1175 check_ldflags(){
1176     log check_ldflags "$@"
1177     test_ldflags "$@" && add_ldflags "$@"
1178 }
1179
1180 test_stripflags(){
1181     log test_stripflags "$@"
1182     # call test_cc to get a fresh TMPO
1183     test_cc <<EOF
1184 int main(void) { return 0; }
1185 EOF
1186     test_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
1187 }
1188
1189 check_stripflags(){
1190     log check_stripflags "$@"
1191     test_stripflags "$@" && add_stripflags "$@"
1192 }
1193
1194 check_header(){
1195     log check_header "$@"
1196     headers=$1
1197     shift
1198     disable_sanitized $headers
1199     {
1200         for hdr in $headers; do
1201             print_include $hdr
1202         done
1203         echo "int x;"
1204     } | test_cpp "$@" && enable_sanitized $headers
1205 }
1206
1207 check_header_objcc(){
1208     log check_header_objcc "$@"
1209     rm -f -- "$TMPO"
1210     header=$1
1211     shift
1212     disable_sanitized $header
1213     {
1214        echo "#include <$header>"
1215        echo "int main(void) { return 0; }"
1216     } | test_objcc && test_stat "$TMPO" && enable_sanitized $header
1217 }
1218
1219 check_apple_framework(){
1220     log check_apple_framework "$@"
1221     framework="$1"
1222     name="$(tolower $framework)"
1223     header="${framework}/${framework}.h"
1224     disable $name
1225     check_header_objcc $header &&
1226         enable $name && eval ${name}_extralibs='"-framework $framework"'
1227 }
1228
1229 check_func(){
1230     log check_func "$@"
1231     func=$1
1232     shift
1233     disable $func
1234     test_ld "cc" "$@" <<EOF && enable $func
1235 extern int $func();
1236 int main(void){ $func(); }
1237 EOF
1238 }
1239
1240 check_complexfunc(){
1241     log check_complexfunc "$@"
1242     func=$1
1243     narg=$2
1244     shift 2
1245     test $narg = 2 && args="f, g" || args="f * I"
1246     disable $func
1247     test_ld "cc" "$@" <<EOF && enable $func
1248 #include <complex.h>
1249 #include <math.h>
1250 float foo(complex float f, complex float g) { return $func($args); }
1251 int main(void){ return (int) foo; }
1252 EOF
1253 }
1254
1255 check_mathfunc(){
1256     log check_mathfunc "$@"
1257     func=$1
1258     narg=$2
1259     shift 2
1260     test $narg = 2 && args="f, g" || args="f"
1261     disable $func
1262     test_ld "cc" "$@" <<EOF && enable $func
1263 #include <math.h>
1264 float foo(float f, float g) { return $func($args); }
1265 int main(void){ return (int) foo; }
1266 EOF
1267 }
1268
1269 check_func_headers(){
1270     log check_func_headers "$@"
1271     headers=$1
1272     funcs=$2
1273     shift 2
1274     {
1275         for hdr in $headers; do
1276             print_include $hdr
1277         done
1278         echo "#include <stdint.h>"
1279         for func in $funcs; do
1280             echo "long check_$func(void) { return (long) $func; }"
1281         done
1282         echo "int main(void) { int ret = 0;"
1283         # LTO could optimize out the test functions without this
1284         for func in $funcs; do
1285             echo " ret |= ((intptr_t)check_$func) & 0xFFFF;"
1286         done
1287         echo "return ret; }"
1288     } | test_ld "cc" "$@" && enable $funcs && enable_sanitized $headers
1289 }
1290
1291 check_class_headers_cpp(){
1292     log check_class_headers_cpp "$@"
1293     headers=$1
1294     classes=$2
1295     shift 2
1296     {
1297         for hdr in $headers; do
1298             echo "#include <$hdr>"
1299         done
1300         echo "int main(void) { "
1301         i=1
1302         for class in $classes; do
1303             echo "$class obj$i;"
1304             i=$(expr $i + 1)
1305         done
1306         echo "return 0; }"
1307     } | test_ld "cxx" "$@" && enable $funcs && enable_sanitized $headers
1308 }
1309
1310 test_cpp_condition(){
1311     log test_cpp_condition "$@"
1312     header=$1
1313     condition=$2
1314     shift 2
1315     test_cpp "$@" <<EOF
1316 #include <$header>
1317 #if !($condition)
1318 #error "unsatisfied condition: $condition"
1319 #endif
1320 EOF
1321 }
1322
1323 check_cpp_condition(){
1324     log check_cpp_condition "$@"
1325     name=$1
1326     shift 1
1327     disable $name
1328     test_cpp_condition "$@" && enable $name
1329 }
1330
1331 test_cflags_cc(){
1332     log test_cflags_cc "$@"
1333     flags=$1
1334     header=$2
1335     condition=$3
1336     shift 3
1337     set -- $($cflags_filter "$flags")
1338     test_cc "$@" <<EOF
1339 #include <$header>
1340 #if !($condition)
1341 #error "unsatisfied condition: $condition"
1342 #endif
1343 EOF
1344 }
1345
1346 check_lib(){
1347     log check_lib "$@"
1348     name="$1"
1349     headers="$2"
1350     funcs="$3"
1351     shift 3
1352     disable $name
1353     check_func_headers "$headers" "$funcs" "$@" &&
1354         enable $name && eval ${name}_extralibs="\$@"
1355 }
1356
1357 check_lib_cpp(){
1358     log check_lib_cpp "$@"
1359     name="$1"
1360     headers="$2"
1361     classes="$3"
1362     shift 3
1363     disable $name
1364     check_class_headers_cpp "$headers" "$classes" "$@" &&
1365         enable $name && eval ${name}_extralibs="\$@"
1366 }
1367
1368 test_pkg_config(){
1369     log test_pkg_config "$@"
1370     name="$1"
1371     pkg_version="$2"
1372     pkg="${2%% *}"
1373     headers="$3"
1374     funcs="$4"
1375     shift 4
1376     disable $name
1377     test_cmd $pkg_config --exists --print-errors $pkg_version || return
1378     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1379     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1380     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1381         enable $name &&
1382         set_sanitized "${name}_cflags"    $pkg_cflags &&
1383         set_sanitized "${name}_extralibs" $pkg_libs
1384 }
1385
1386 check_pkg_config(){
1387     log check_pkg_config "$@"
1388     name="$1"
1389     test_pkg_config "$@" &&
1390         eval add_cflags \$${name}_cflags
1391 }
1392
1393 test_exec(){
1394     test_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1395 }
1396
1397 check_exec_crash(){
1398     log check_exec_crash "$@"
1399     code=$(cat)
1400
1401     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1402     # are safe but may not be available everywhere.  Thus we use
1403     # raise(SIGTERM) instead.  The check is run in a subshell so we
1404     # can redirect the "Terminated" message from the shell.  SIGBUS
1405     # is not defined by standard C so it is used conditionally.
1406
1407     (test_exec "$@") >> $logfile 2>&1 <<EOF
1408 #include <signal.h>
1409 static void sighandler(int sig){
1410     raise(SIGTERM);
1411 }
1412 int foo(void){
1413     $code
1414 }
1415 int (*func_ptr)(void) = foo;
1416 int main(void){
1417     signal(SIGILL, sighandler);
1418     signal(SIGFPE, sighandler);
1419     signal(SIGSEGV, sighandler);
1420 #ifdef SIGBUS
1421     signal(SIGBUS, sighandler);
1422 #endif
1423     return func_ptr();
1424 }
1425 EOF
1426 }
1427
1428 check_type(){
1429     log check_type "$@"
1430     headers=$1
1431     type=$2
1432     shift 2
1433     disable_sanitized "$type"
1434     test_code cc "$headers" "$type v" "$@" && enable_sanitized "$type"
1435 }
1436
1437 check_struct(){
1438     log check_struct "$@"
1439     headers=$1
1440     struct=$2
1441     member=$3
1442     shift 3
1443     disable_sanitized "${struct}_${member}"
1444     test_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1445         enable_sanitized "${struct}_${member}"
1446 }
1447
1448 check_builtin(){
1449     log check_builtin "$@"
1450     name=$1
1451     headers=$2
1452     builtin=$3
1453     shift 3
1454     disable "$name"
1455     test_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1456 }
1457
1458 check_compile_assert(){
1459     log check_compile_assert "$@"
1460     name=$1
1461     headers=$2
1462     condition=$3
1463     shift 3
1464     disable "$name"
1465     test_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1466 }
1467
1468 check_cc(){
1469     log check_cc "$@"
1470     name=$1
1471     shift
1472     disable "$name"
1473     test_code cc "$@" && enable "$name"
1474 }
1475
1476 require(){
1477     log require "$@"
1478     name_version="$1"
1479     name="${1%% *}"
1480     shift
1481     check_lib $name "$@" || die "ERROR: $name_version not found"
1482 }
1483
1484 require_cc(){
1485     log require_cc "$@"
1486     name="$1"
1487     shift
1488     test_code cc "$@" || die "ERROR: $name failed"
1489 }
1490
1491 require_cpp(){
1492     name="$1"
1493     headers="$2"
1494     classes="$3"
1495     shift 3
1496     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1497 }
1498
1499 require_header(){
1500     log require_header "$@"
1501     headers="$1"
1502     check_header "$@" || die "ERROR: $headers not found"
1503 }
1504
1505 require_cpp_condition(){
1506     log require_cpp_condition "$@"
1507     condition="$2"
1508     test_cpp_condition "$@" || die "ERROR: $condition not satisfied"
1509 }
1510
1511 require_pkg_config(){
1512     log require_pkg_config "$@"
1513     pkg_version="$2"
1514     check_pkg_config "$@" || die "ERROR: $pkg_version not found using pkg-config$pkg_config_fail_message"
1515 }
1516
1517 hostcc_e(){
1518     eval printf '%s\\n' $HOSTCC_E
1519 }
1520
1521 hostcc_o(){
1522     eval printf '%s\\n' $HOSTCC_O
1523 }
1524
1525 test_host_cc(){
1526     log test_host_cc "$@"
1527     cat > $TMPC
1528     log_file $TMPC
1529     test_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1530 }
1531
1532 test_host_cpp(){
1533     log test_host_cpp "$@"
1534     cat > $TMPC
1535     log_file $TMPC
1536     test_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1537 }
1538
1539 check_host_cppflags(){
1540     log check_host_cppflags "$@"
1541     test_host_cpp "$@" <<EOF && append host_cppflags "$@"
1542 #include <stdlib.h>
1543 EOF
1544 }
1545
1546 check_host_cflags(){
1547     log check_host_cflags "$@"
1548     set -- $($host_cflags_filter "$@")
1549     test_host_cc "$@" <<EOF && append host_cflags "$@"
1550 int x;
1551 EOF
1552 }
1553
1554 test_host_cpp_condition(){
1555     log test_host_cpp_condition "$@"
1556     header=$1
1557     condition=$2
1558     shift 2
1559     test_host_cpp "$@" <<EOF
1560 #include <$header>
1561 #if !($condition)
1562 #error "unsatisfied condition: $condition"
1563 #endif
1564 EOF
1565 }
1566
1567 check_host_cpp_condition(){
1568     log check_host_cpp_condition "$@"
1569     name=$1
1570     shift 1
1571     disable $name
1572     test_host_cpp_condition "$@" && enable $name
1573 }
1574
1575 cp_if_changed(){
1576     cmp -s "$1" "$2" && { test "$quiet" != "yes" && echo "$2 is unchanged"; } && return
1577     mkdir -p "$(dirname $2)"
1578     cp -f "$1" "$2"
1579 }
1580
1581 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1582 # system-dependent things.
1583
1584 AVCODEC_COMPONENTS="
1585     bsfs
1586     decoders
1587     encoders
1588     hwaccels
1589     parsers
1590 "
1591
1592 AVDEVICE_COMPONENTS="
1593     indevs
1594     outdevs
1595 "
1596
1597 AVFILTER_COMPONENTS="
1598     filters
1599 "
1600
1601 AVFORMAT_COMPONENTS="
1602     demuxers
1603     muxers
1604     protocols
1605 "
1606
1607 COMPONENT_LIST="
1608     $AVCODEC_COMPONENTS
1609     $AVDEVICE_COMPONENTS
1610     $AVFILTER_COMPONENTS
1611     $AVFORMAT_COMPONENTS
1612 "
1613
1614 EXAMPLE_LIST="
1615     avio_dir_cmd_example
1616     avio_reading_example
1617     decode_audio_example
1618     decode_video_example
1619     demuxing_decoding_example
1620     encode_audio_example
1621     encode_video_example
1622     extract_mvs_example
1623     filter_audio_example
1624     filtering_audio_example
1625     filtering_video_example
1626     http_multiclient_example
1627     hw_decode_example
1628     metadata_example
1629     muxing_example
1630     qsvdec_example
1631     remuxing_example
1632     resampling_audio_example
1633     scaling_video_example
1634     transcode_aac_example
1635     transcoding_example
1636     vaapi_encode_example
1637     vaapi_transcode_example
1638 "
1639
1640 EXTERNAL_AUTODETECT_LIBRARY_LIST="
1641     alsa
1642     appkit
1643     avfoundation
1644     bzlib
1645     coreimage
1646     iconv
1647     libxcb
1648     libxcb_shm
1649     libxcb_shape
1650     libxcb_xfixes
1651     lzma
1652     schannel
1653     sdl2
1654     securetransport
1655     sndio
1656     xlib
1657     zlib
1658 "
1659
1660 EXTERNAL_LIBRARY_GPL_LIST="
1661     avisynth
1662     frei0r
1663     libcdio
1664     libdavs2
1665     librubberband
1666     libvidstab
1667     libx264
1668     libx265
1669     libxavs
1670     libxvid
1671 "
1672
1673 EXTERNAL_LIBRARY_NONFREE_LIST="
1674     decklink
1675     libndi_newtek
1676     libfdk_aac
1677     openssl
1678     libtls
1679 "
1680
1681 EXTERNAL_LIBRARY_VERSION3_LIST="
1682     gmp
1683     liblensfun
1684     libopencore_amrnb
1685     libopencore_amrwb
1686     libvmaf
1687     libvo_amrwbenc
1688     mbedtls
1689     rkmpp
1690 "
1691
1692 EXTERNAL_LIBRARY_GPLV3_LIST="
1693     libsmbclient
1694 "
1695
1696 EXTERNAL_LIBRARY_LIST="
1697     $EXTERNAL_LIBRARY_GPL_LIST
1698     $EXTERNAL_LIBRARY_NONFREE_LIST
1699     $EXTERNAL_LIBRARY_VERSION3_LIST
1700     $EXTERNAL_LIBRARY_GPLV3_LIST
1701     chromaprint
1702     gcrypt
1703     gnutls
1704     jni
1705     ladspa
1706     libaom
1707     libass
1708     libbluray
1709     libbs2b
1710     libcaca
1711     libcelt
1712     libcodec2
1713     libdc1394
1714     libdrm
1715     libflite
1716     libfontconfig
1717     libfreetype
1718     libfribidi
1719     libgme
1720     libgsm
1721     libiec61883
1722     libilbc
1723     libjack
1724     libkvazaar
1725     libmodplug
1726     libmp3lame
1727     libmysofa
1728     libopencv
1729     libopenh264
1730     libopenjpeg
1731     libopenmpt
1732     libopus
1733     libpulse
1734     librsvg
1735     librtmp
1736     libshine
1737     libsmbclient
1738     libsnappy
1739     libsoxr
1740     libspeex
1741     libsrt
1742     libssh
1743     libtensorflow
1744     libtesseract
1745     libtheora
1746     libtwolame
1747     libv4l2
1748     libvorbis
1749     libvpx
1750     libwavpack
1751     libwebp
1752     libxml2
1753     libzimg
1754     libzmq
1755     libzvbi
1756     lv2
1757     mediacodec
1758     openal
1759     opengl
1760     vapoursynth
1761 "
1762
1763 HWACCEL_AUTODETECT_LIBRARY_LIST="
1764     amf
1765     audiotoolbox
1766     crystalhd
1767     cuda
1768     cuvid
1769     d3d11va
1770     dxva2
1771     ffnvcodec
1772     nvdec
1773     nvenc
1774     vaapi
1775     vdpau
1776     videotoolbox
1777     v4l2_m2m
1778     xvmc
1779 "
1780
1781 # catchall list of things that require external libs to link
1782 EXTRALIBS_LIST="
1783     cpu_init
1784     cws2fws
1785 "
1786
1787 HWACCEL_LIBRARY_NONFREE_LIST="
1788     cuda_sdk
1789     libnpp
1790 "
1791
1792 HWACCEL_LIBRARY_LIST="
1793     $HWACCEL_LIBRARY_NONFREE_LIST
1794     libmfx
1795     mmal
1796     omx
1797     opencl
1798 "
1799
1800 DOCUMENT_LIST="
1801     doc
1802     htmlpages
1803     manpages
1804     podpages
1805     txtpages
1806 "
1807
1808 FEATURE_LIST="
1809     ftrapv
1810     gray
1811     hardcoded_tables
1812     omx_rpi
1813     runtime_cpudetect
1814     safe_bitstream_reader
1815     shared
1816     small
1817     static
1818     swscale_alpha
1819 "
1820
1821 LIBRARY_LIST="
1822     avcodec
1823     avdevice
1824     avfilter
1825     avformat
1826     avresample
1827     avutil
1828     postproc
1829     swresample
1830     swscale
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 librtmp_protocol_deps="librtmp"
3291 librtmpe_protocol_deps="librtmp"
3292 librtmps_protocol_deps="librtmp"
3293 librtmpt_protocol_deps="librtmp"
3294 librtmpte_protocol_deps="librtmp"
3295 libsmbclient_protocol_deps="libsmbclient gplv3"
3296 libssh_protocol_deps="libssh"
3297 libtls_conflict="openssl gnutls mbedtls"
3298 mmsh_protocol_select="http_protocol"
3299 mmst_protocol_select="network"
3300 libsrt_protocol_deps="libsrt"
3301 libsrt_protocol_select="network"
3302 rtmp_protocol_conflict="librtmp_protocol"
3303 rtmp_protocol_select="tcp_protocol"
3304 rtmp_protocol_suggest="zlib"
3305 rtmpe_protocol_select="ffrtmpcrypt_protocol"
3306 rtmpe_protocol_suggest="zlib"
3307 rtmps_protocol_conflict="librtmp_protocol"
3308 rtmps_protocol_select="tls_protocol"
3309 rtmps_protocol_suggest="zlib"
3310 rtmpt_protocol_select="ffrtmphttp_protocol"
3311 rtmpt_protocol_suggest="zlib"
3312 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
3313 rtmpte_protocol_suggest="zlib"
3314 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
3315 rtmpts_protocol_suggest="zlib"
3316 rtp_protocol_select="udp_protocol"
3317 schannel_conflict="openssl gnutls libtls mbedtls"
3318 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
3319 sctp_protocol_select="network"
3320 securetransport_conflict="openssl gnutls libtls mbedtls"
3321 srtp_protocol_select="rtp_protocol srtp"
3322 tcp_protocol_select="network"
3323 tls_protocol_deps_any="gnutls openssl schannel securetransport libtls mbedtls"
3324 tls_protocol_select="tcp_protocol"
3325 udp_protocol_select="network"
3326 udplite_protocol_select="network"
3327 unix_protocol_deps="sys_un_h"
3328 unix_protocol_select="network"
3329
3330 # filters
3331 afftfilt_filter_deps="avcodec"
3332 afftfilt_filter_select="fft"
3333 afir_filter_deps="avcodec"
3334 afir_filter_select="fft"
3335 amovie_filter_deps="avcodec avformat"
3336 aresample_filter_deps="swresample"
3337 ass_filter_deps="libass"
3338 atempo_filter_deps="avcodec"
3339 atempo_filter_select="rdft"
3340 avgblur_opencl_filter_deps="opencl"
3341 azmq_filter_deps="libzmq"
3342 blackframe_filter_deps="gpl"
3343 boxblur_filter_deps="gpl"
3344 boxblur_opencl_filter_deps="opencl gpl"
3345 bs2b_filter_deps="libbs2b"
3346 colormatrix_filter_deps="gpl"
3347 convolution_opencl_filter_deps="opencl"
3348 convolve_filter_deps="avcodec"
3349 convolve_filter_select="fft"
3350 coreimage_filter_deps="coreimage appkit"
3351 coreimage_filter_extralibs="-framework OpenGL"
3352 coreimagesrc_filter_deps="coreimage appkit"
3353 coreimagesrc_filter_extralibs="-framework OpenGL"
3354 cover_rect_filter_deps="avcodec avformat gpl"
3355 cropdetect_filter_deps="gpl"
3356 deconvolve_filter_deps="avcodec"
3357 deconvolve_filter_select="fft"
3358 deinterlace_qsv_filter_deps="libmfx"
3359 deinterlace_vaapi_filter_deps="vaapi"
3360 delogo_filter_deps="gpl"
3361 denoise_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3362 deshake_filter_select="pixelutils"
3363 dilation_opencl_filter_deps="opencl"
3364 drawtext_filter_deps="libfreetype"
3365 drawtext_filter_suggest="libfontconfig libfribidi"
3366 elbg_filter_deps="avcodec"
3367 eq_filter_deps="gpl"
3368 erosion_opencl_filter_deps="opencl"
3369 fftfilt_filter_deps="avcodec"
3370 fftfilt_filter_select="rdft"
3371 fftdnoiz_filter_deps="avcodec"
3372 fftdnoiz_filter_select="fft"
3373 find_rect_filter_deps="avcodec avformat gpl"
3374 firequalizer_filter_deps="avcodec"
3375 firequalizer_filter_select="rdft"
3376 flite_filter_deps="libflite"
3377 framerate_filter_select="pixelutils"
3378 frei0r_filter_deps="frei0r libdl"
3379 frei0r_src_filter_deps="frei0r libdl"
3380 fspp_filter_deps="gpl"
3381 geq_filter_deps="gpl"
3382 histeq_filter_deps="gpl"
3383 hqdn3d_filter_deps="gpl"
3384 interlace_filter_deps="gpl"
3385 kerndeint_filter_deps="gpl"
3386 ladspa_filter_deps="ladspa libdl"
3387 lensfun_filter_deps="liblensfun version3"
3388 lv2_filter_deps="lv2"
3389 mcdeint_filter_deps="avcodec gpl"
3390 movie_filter_deps="avcodec avformat"
3391 mpdecimate_filter_deps="gpl"
3392 mpdecimate_filter_select="pixelutils"
3393 mptestsrc_filter_deps="gpl"
3394 negate_filter_deps="lut_filter"
3395 nnedi_filter_deps="gpl"
3396 ocr_filter_deps="libtesseract"
3397 ocv_filter_deps="libopencv"
3398 openclsrc_filter_deps="opencl"
3399 overlay_opencl_filter_deps="opencl"
3400 overlay_qsv_filter_deps="libmfx"
3401 overlay_qsv_filter_select="qsvvpp"
3402 owdenoise_filter_deps="gpl"
3403 pan_filter_deps="swresample"
3404 perspective_filter_deps="gpl"
3405 phase_filter_deps="gpl"
3406 pp7_filter_deps="gpl"
3407 pp_filter_deps="gpl postproc"
3408 prewitt_opencl_filter_deps="opencl"
3409 procamp_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3410 program_opencl_filter_deps="opencl"
3411 pullup_filter_deps="gpl"
3412 removelogo_filter_deps="avcodec avformat swscale"
3413 repeatfields_filter_deps="gpl"
3414 resample_filter_deps="avresample"
3415 roberts_opencl_filter_deps="opencl"
3416 rubberband_filter_deps="librubberband"
3417 sab_filter_deps="gpl swscale"
3418 scale2ref_filter_deps="swscale"
3419 scale_filter_deps="swscale"
3420 scale_qsv_filter_deps="libmfx"
3421 select_filter_select="pixelutils"
3422 sharpness_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3423 showcqt_filter_deps="avcodec avformat swscale"
3424 showcqt_filter_suggest="libfontconfig libfreetype"
3425 showcqt_filter_select="fft"
3426 showfreqs_filter_deps="avcodec"
3427 showfreqs_filter_select="fft"
3428 showspectrum_filter_deps="avcodec"
3429 showspectrum_filter_select="fft"
3430 showspectrumpic_filter_deps="avcodec"
3431 showspectrumpic_filter_select="fft"
3432 signature_filter_deps="gpl avcodec avformat"
3433 smartblur_filter_deps="gpl swscale"
3434 sobel_opencl_filter_deps="opencl"
3435 sofalizer_filter_deps="libmysofa avcodec"
3436 sofalizer_filter_select="fft"
3437 spectrumsynth_filter_deps="avcodec"
3438 spectrumsynth_filter_select="fft"
3439 spp_filter_deps="gpl avcodec"
3440 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3441 sr_filter_deps="avformat swscale"
3442 sr_filter_select="dnn"
3443 stereo3d_filter_deps="gpl"
3444 subtitles_filter_deps="avformat avcodec libass"
3445 super2xsai_filter_deps="gpl"
3446 pixfmts_super2xsai_test_deps="super2xsai_filter"
3447 tinterlace_filter_deps="gpl"
3448 tinterlace_merge_test_deps="tinterlace_filter"
3449 tinterlace_pad_test_deps="tinterlace_filter"
3450 tonemap_filter_deps="const_nan"
3451 tonemap_opencl_filter_deps="opencl const_nan"
3452 unsharp_opencl_filter_deps="opencl"
3453 uspp_filter_deps="gpl avcodec"
3454 vaguedenoiser_filter_deps="gpl"
3455 vidstabdetect_filter_deps="libvidstab"
3456 vidstabtransform_filter_deps="libvidstab"
3457 libvmaf_filter_deps="libvmaf pthreads"
3458 zmq_filter_deps="libzmq"
3459 zoompan_filter_deps="swscale"
3460 zscale_filter_deps="libzimg const_nan"
3461 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3462 vpp_qsv_filter_deps="libmfx"
3463 vpp_qsv_filter_select="qsvvpp"
3464
3465 # examples
3466 avio_dir_cmd_deps="avformat avutil"
3467 avio_reading_deps="avformat avcodec avutil"
3468 decode_audio_example_deps="avcodec avutil"
3469 decode_video_example_deps="avcodec avutil"
3470 demuxing_decoding_example_deps="avcodec avformat avutil"
3471 encode_audio_example_deps="avcodec avutil"
3472 encode_video_example_deps="avcodec avutil"
3473 extract_mvs_example_deps="avcodec avformat avutil"
3474 filter_audio_example_deps="avfilter avutil"
3475 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3476 filtering_video_example_deps="avfilter avcodec avformat avutil"
3477 http_multiclient_example_deps="avformat avutil fork"
3478 hw_decode_example_deps="avcodec avformat avutil"
3479 metadata_example_deps="avformat avutil"
3480 muxing_example_deps="avcodec avformat avutil swscale"
3481 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
3482 remuxing_example_deps="avcodec avformat avutil"
3483 resampling_audio_example_deps="avutil swresample"
3484 scaling_video_example_deps="avutil swscale"
3485 transcode_aac_example_deps="avcodec avformat swresample"
3486 transcoding_example_deps="avfilter avcodec avformat avutil"
3487 vaapi_encode_example_deps="avcodec avutil h264_vaapi_encoder"
3488 vaapi_transcode_example_deps="avcodec avformat avutil h264_vaapi_encoder"
3489
3490 # EXTRALIBS_LIST
3491 cpu_init_extralibs="pthreads_extralibs"
3492 cws2fws_extralibs="zlib_extralibs"
3493
3494 # libraries, in linking order
3495 avcodec_deps="avutil"
3496 avcodec_suggest="libm"
3497 avcodec_select="null_bsf"
3498 avdevice_deps="avformat avcodec avutil"
3499 avdevice_suggest="libm"
3500 avfilter_deps="avutil"
3501 avfilter_suggest="libm"
3502 avformat_deps="avcodec avutil"
3503 avformat_suggest="libm network zlib"
3504 avresample_deps="avutil"
3505 avresample_suggest="libm"
3506 avutil_suggest="clock_gettime ffnvcodec libm libdrm libmfx opencl user32 vaapi videotoolbox corefoundation corevideo coremedia bcrypt"
3507 postproc_deps="avutil gpl"
3508 postproc_suggest="libm"
3509 swresample_deps="avutil"
3510 swresample_suggest="libm libsoxr"
3511 swscale_deps="avutil"
3512 swscale_suggest="libm"
3513
3514 avcodec_extralibs="pthreads_extralibs iconv_extralibs"
3515 avfilter_extralibs="pthreads_extralibs"
3516 avutil_extralibs="d3d11va_extralibs nanosleep_extralibs pthreads_extralibs vaapi_drm_extralibs vaapi_x11_extralibs vdpau_x11_extralibs"
3517
3518 # programs
3519 ffmpeg_deps="avcodec avfilter avformat"
3520 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3521                null_filter
3522                trim_filter"
3523 ffmpeg_suggest="ole32 psapi shell32"
3524 ffplay_deps="avcodec avformat swscale swresample sdl2"
3525 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3526 ffplay_suggest="shell32"
3527 ffprobe_deps="avcodec avformat"
3528 ffprobe_suggest="shell32"
3529
3530 # documentation
3531 podpages_deps="perl"
3532 manpages_deps="perl pod2man"
3533 htmlpages_deps="perl"
3534 htmlpages_deps_any="makeinfo_html texi2html"
3535 txtpages_deps="perl makeinfo"
3536 doc_deps_any="manpages htmlpages podpages txtpages"
3537
3538 # default parameters
3539
3540 logfile="ffbuild/config.log"
3541
3542 # installation paths
3543 prefix_default="/usr/local"
3544 bindir_default='${prefix}/bin'
3545 datadir_default='${prefix}/share/ffmpeg'
3546 docdir_default='${prefix}/share/doc/ffmpeg'
3547 incdir_default='${prefix}/include'
3548 libdir_default='${prefix}/lib'
3549 mandir_default='${prefix}/share/man'
3550
3551 # toolchain
3552 ar_default="ar"
3553 cc_default="gcc"
3554 cxx_default="g++"
3555 host_cc_default="gcc"
3556 doxygen_default="doxygen"
3557 install="install"
3558 ln_s_default="ln -s -f"
3559 nm_default="nm -g"
3560 pkg_config_default=pkg-config
3561 ranlib_default="ranlib"
3562 strip_default="strip"
3563 version_script='--version-script'
3564 objformat="elf32"
3565 x86asmexe_default="nasm"
3566 windres_default="windres"
3567 nvcc_default="nvcc"
3568 nvccflags_default="-gencode arch=compute_30,code=sm_30 -O2"
3569 striptype="direct"
3570
3571 # OS
3572 target_os_default=$(tolower $(uname -s))
3573 host_os=$target_os_default
3574
3575 # machine
3576 if test "$target_os_default" = aix; then
3577     arch_default=$(uname -p)
3578     strip_default="strip -X32_64"
3579 else
3580     arch_default=$(uname -m)
3581 fi
3582 cpu="generic"
3583 intrinsics="none"
3584
3585 # configurable options
3586 enable $PROGRAM_LIST
3587 enable $DOCUMENT_LIST
3588 enable $EXAMPLE_LIST
3589 enable $(filter_out avresample $LIBRARY_LIST)
3590 enable stripping
3591
3592 enable asm
3593 enable debug
3594 enable doc
3595 enable faan faandct faanidct
3596 enable optimizations
3597 enable runtime_cpudetect
3598 enable safe_bitstream_reader
3599 enable static
3600 enable swscale_alpha
3601 enable valgrind_backtrace
3602
3603 sws_max_filter_size_default=256
3604 set_default sws_max_filter_size
3605
3606 # internal components are enabled by default
3607 enable $EXTRALIBS_LIST
3608
3609 # Avoid external, non-system, libraries getting enabled by dependency resolution
3610 disable $EXTERNAL_LIBRARY_LIST $HWACCEL_LIBRARY_LIST
3611
3612 # build settings
3613 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3614 LIBPREF="lib"
3615 LIBSUF=".a"
3616 FULLNAME='$(NAME)$(BUILDSUF)'
3617 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3618 SLIBPREF="lib"
3619 SLIBSUF=".so"
3620 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3621 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3622 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3623 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3624 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3625 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3626 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
3627
3628 asflags_filter=echo
3629 cflags_filter=echo
3630 ldflags_filter=echo
3631
3632 AS_C='-c'
3633 AS_O='-o $@'
3634 CC_C='-c'
3635 CC_E='-E -o $@'
3636 CC_O='-o $@'
3637 CXX_C='-c'
3638 CXX_O='-o $@'
3639 OBJCC_C='-c'
3640 OBJCC_E='-E -o $@'
3641 OBJCC_O='-o $@'
3642 X86ASM_O='-o $@'
3643 LD_O='-o $@'
3644 LD_LIB='-l%'
3645 LD_PATH='-L'
3646 HOSTCC_C='-c'
3647 HOSTCC_E='-E -o $@'
3648 HOSTCC_O='-o $@'
3649 HOSTLD_O='-o $@'
3650 NVCC_C='-c'
3651 NVCC_O='-o $@'
3652
3653 host_extralibs='-lm'
3654 host_cflags_filter=echo
3655 host_ldflags_filter=echo
3656
3657 target_path='$(CURDIR)'
3658
3659 # since the object filename is not given with the -MM flag, the compiler
3660 # is only able to print the basename, and we must add the path ourselves
3661 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3662 DEPFLAGS='-MM'
3663
3664 mkdir -p ffbuild
3665
3666 # find source path
3667 if test -f configure; then
3668     source_path=.
3669 else
3670     source_path=$(cd $(dirname "$0"); pwd)
3671     case "$source_path" in
3672         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3673     esac
3674     test -e "$source_path/config.h" &&
3675         die "Out of tree builds are impossible with config.h in source dir."
3676 fi
3677
3678 for v in "$@"; do
3679     r=${v#*=}
3680     l=${v%"$r"}
3681     r=$(sh_quote "$r")
3682     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3683 done
3684
3685 find_things_extern(){
3686     thing=$1
3687     pattern=$2
3688     file=$source_path/$3
3689     out=${4:-$thing}
3690     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$out/p" "$file"
3691 }
3692
3693 find_filters_extern(){
3694     file=$source_path/$1
3695     #sed -n "s/^extern AVFilter ff_\([avfsinkrc]\{2,5\}\)_\(\w\+\);/\2_filter/p" $file
3696     sed -E -n "s/^extern AVFilter ff_([avfsinkrc]{2,5})_([a-zA-Z0-9_]+);/\2_filter/p" $file
3697 }
3698
3699 FILTER_LIST=$(find_filters_extern libavfilter/allfilters.c)
3700 OUTDEV_LIST=$(find_things_extern muxer AVOutputFormat libavdevice/alldevices.c outdev)
3701 INDEV_LIST=$(find_things_extern demuxer AVInputFormat libavdevice/alldevices.c indev)
3702 MUXER_LIST=$(find_things_extern muxer AVOutputFormat libavformat/allformats.c)
3703 DEMUXER_LIST=$(find_things_extern demuxer AVInputFormat libavformat/allformats.c)
3704 ENCODER_LIST=$(find_things_extern encoder AVCodec libavcodec/allcodecs.c)
3705 DECODER_LIST=$(find_things_extern decoder AVCodec libavcodec/allcodecs.c)
3706 CODEC_LIST="
3707     $ENCODER_LIST
3708     $DECODER_LIST
3709 "
3710 PARSER_LIST=$(find_things_extern parser AVCodecParser libavcodec/parsers.c)
3711 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3712 HWACCEL_LIST=$(find_things_extern hwaccel AVHWAccel libavcodec/hwaccels.h)
3713 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3714
3715 AVCODEC_COMPONENTS_LIST="
3716     $BSF_LIST
3717     $DECODER_LIST
3718     $ENCODER_LIST
3719     $HWACCEL_LIST
3720     $PARSER_LIST
3721 "
3722
3723 AVDEVICE_COMPONENTS_LIST="
3724     $INDEV_LIST
3725     $OUTDEV_LIST
3726 "
3727
3728 AVFILTER_COMPONENTS_LIST="
3729     $FILTER_LIST
3730 "
3731
3732 AVFORMAT_COMPONENTS_LIST="
3733     $DEMUXER_LIST
3734     $MUXER_LIST
3735     $PROTOCOL_LIST
3736 "
3737
3738 ALL_COMPONENTS="
3739     $AVCODEC_COMPONENTS_LIST
3740     $AVDEVICE_COMPONENTS_LIST
3741     $AVFILTER_COMPONENTS_LIST
3742     $AVFORMAT_COMPONENTS_LIST
3743 "
3744
3745 for n in $COMPONENT_LIST; do
3746     v=$(toupper ${n%s})_LIST
3747     eval enable \$$v
3748     eval ${n}_if_any="\$$v"
3749 done
3750
3751 enable $ARCH_EXT_LIST
3752
3753 die_unknown(){
3754     echo "Unknown option \"$1\"."
3755     echo "See $0 --help for available options."
3756     exit 1
3757 }
3758
3759 print_in_columns() {
3760     cols=$(expr $ncols / 24)
3761     cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
3762 }
3763
3764 show_list() {
3765     suffix=_$1
3766     shift
3767     echo $* | sed s/$suffix//g | print_in_columns
3768     exit 0
3769 }
3770
3771 rand_list(){
3772     IFS=', '
3773     set -- $*
3774     unset IFS
3775     for thing; do
3776         comp=${thing%:*}
3777         prob=${thing#$comp}
3778         prob=${prob#:}
3779         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3780         echo "prob ${prob:-0.5}"
3781         printf '%s\n' $comp
3782     done
3783 }
3784
3785 do_random(){
3786     action=$1
3787     shift
3788     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3789     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3790 }
3791
3792 for opt do
3793     optval="${opt#*=}"
3794     case "$opt" in
3795         --extra-ldflags=*)
3796             add_ldflags $optval
3797         ;;
3798         --extra-ldexeflags=*)
3799             add_ldexeflags $optval
3800         ;;
3801         --extra-ldsoflags=*)
3802             add_ldsoflags $optval
3803         ;;
3804         --extra-ldlibflags=*)
3805             warn "The --extra-ldlibflags option is only provided for compatibility and will be\n"\
3806                  "removed in the future. Use --extra-ldsoflags instead."
3807             add_ldsoflags $optval
3808         ;;
3809         --extra-libs=*)
3810             add_extralibs $optval
3811         ;;
3812         --disable-devices)
3813             disable $INDEV_LIST $OUTDEV_LIST
3814         ;;
3815         --enable-debug=*)
3816             debuglevel="$optval"
3817         ;;
3818         --disable-programs)
3819             disable $PROGRAM_LIST
3820         ;;
3821         --disable-everything)
3822             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3823         ;;
3824         --disable-all)
3825             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3826             disable $LIBRARY_LIST $PROGRAM_LIST doc
3827             enable avutil
3828         ;;
3829         --enable-random|--disable-random)
3830             action=${opt%%-random}
3831             do_random ${action#--} $COMPONENT_LIST
3832         ;;
3833         --enable-random=*|--disable-random=*)
3834             action=${opt%%-random=*}
3835             do_random ${action#--} $optval
3836         ;;
3837         --enable-sdl)
3838             enable sdl2
3839         ;;
3840         --enable-*=*|--disable-*=*)
3841             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3842             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3843             eval list=\$$(toupper $thing)_LIST
3844             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3845             list=$(filter "$name" $list)
3846             [ "$list" = "" ] && warn "Option $opt did not match anything"
3847             $action $list
3848         ;;
3849         --enable-yasm|--disable-yasm)
3850             warn "The ${opt} option is only provided for compatibility and will be\n"\
3851                  "removed in the future. Use --enable-x86asm / --disable-x86asm instead."
3852             test $opt = --enable-yasm && x86asm=yes || x86asm=no
3853         ;;
3854         --yasmexe=*)
3855             warn "The --yasmexe option is only provided for compatibility and will be\n"\
3856                  "removed in the future. Use --x86asmexe instead."
3857             x86asmexe="$optval"
3858         ;;
3859         --enable-?*|--disable-?*)
3860             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3861             if is_in $option $COMPONENT_LIST; then
3862                 test $action = disable && action=unset
3863                 eval $action \$$(toupper ${option%s})_LIST
3864             elif is_in $option $CMDLINE_SELECT; then
3865                 $action $option
3866             else
3867                 die_unknown $opt
3868             fi
3869         ;;
3870         --list-*)
3871             NAME="${opt#--list-}"
3872             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3873             NAME=${NAME%s}
3874             eval show_list $NAME \$$(toupper $NAME)_LIST
3875         ;;
3876         --help|-h) show_help
3877         ;;
3878         --quiet|-q) quiet=yes
3879         ;;
3880         --fatal-warnings) enable fatal_warnings
3881         ;;
3882         --libfuzzer=*)
3883             libfuzzer_path="$optval"
3884         ;;
3885         *)
3886             optname="${opt%%=*}"
3887             optname="${optname#--}"
3888             optname=$(echo "$optname" | sed 's/-/_/g')
3889             if is_in $optname $CMDLINE_SET; then
3890                 eval $optname='$optval'
3891             elif is_in $optname $CMDLINE_APPEND; then
3892                 append $optname "$optval"
3893             else
3894                 die_unknown $opt
3895             fi
3896         ;;
3897     esac
3898 done
3899
3900 for e in $env; do
3901     eval "export $e"
3902 done
3903
3904 if disabled autodetect; then
3905
3906     # Unless iconv is explicitely disabled by the user, we still want to probe
3907     # for the iconv from the libc.
3908     disabled iconv || enable libc_iconv
3909
3910     disable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3911     disable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3912 fi
3913 # Mark specifically enabled, but normally autodetected libraries as requested.
3914 for lib in $AUTODETECT_LIBS; do
3915     enabled $lib && request $lib
3916 done
3917 #TODO: switch to $AUTODETECT_LIBS when $THREADS_LIST is supported the same way
3918 enable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3919 enable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3920
3921 disabled logging && logfile=/dev/null
3922
3923 # command line configuration sanity checks
3924
3925 # we need to build at least one lib type
3926 if ! enabled_any static shared; then
3927     cat <<EOF
3928 At least one library type must be built.
3929 Specify --enable-static to build the static libraries or --enable-shared to
3930 build the shared libraries as well. To only build the shared libraries specify
3931 --disable-static in addition to --enable-shared.
3932 EOF
3933     exit 1
3934 fi
3935
3936 die_license_disabled() {
3937     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
3938 }
3939
3940 die_license_disabled_gpl() {
3941     enabled $1 || { enabled $v && die "$v is incompatible with the gpl and --enable-$1 is not specified."; }
3942 }
3943
3944 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3945 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3946
3947 enabled gpl && map "die_license_disabled_gpl nonfree" $EXTERNAL_LIBRARY_NONFREE_LIST
3948 map "die_license_disabled nonfree" $HWACCEL_LIBRARY_NONFREE_LIST
3949
3950 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3951
3952 if enabled nonfree; then
3953     license="nonfree and unredistributable"
3954 elif enabled gplv3; then
3955     license="GPL version 3 or later"
3956 elif enabled lgplv3; then
3957     license="LGPL version 3 or later"
3958 elif enabled gpl; then
3959     license="GPL version 2 or later"
3960 else
3961     license="LGPL version 2.1 or later"
3962 fi
3963
3964 enabled_all gnutls openssl &&
3965     die "GnuTLS and OpenSSL must not be enabled at the same time."
3966
3967 enabled_all gnutls mbedtls &&
3968     die "GnuTLS and mbedTLS must not be enabled at the same time."
3969
3970 enabled_all openssl mbedtls &&
3971     die "OpenSSL and mbedTLS must not be enabled at the same time."
3972
3973 # Disable all the library-specific components if the library itself
3974 # is disabled, see AVCODEC_LIST and following _LIST variables.
3975
3976 disable_components(){
3977     disabled ${1} && disable $(
3978         eval components="\$$(toupper ${1})_COMPONENTS"
3979         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
3980     )
3981 }
3982
3983 map 'disable_components $v' $LIBRARY_LIST
3984
3985 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
3986 set >> $logfile
3987
3988 test -n "$valgrind" && toolchain="valgrind-memcheck"
3989
3990 enabled ossfuzz && ! echo $CFLAGS | grep -q -- "-fsanitize="  && ! echo $CFLAGS | grep -q -- "-fcoverage-mapping" &&{
3991     add_cflags  -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp -fno-omit-frame-pointer
3992     add_ldflags -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp
3993 }
3994
3995 case "$toolchain" in
3996     *-asan)
3997         cc_default="${toolchain%-asan}"
3998         add_cflags  -fsanitize=address
3999         add_ldflags -fsanitize=address
4000     ;;
4001     *-msan)
4002         cc_default="${toolchain%-msan}"
4003         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
4004         add_ldflags -fsanitize=memory
4005     ;;
4006     *-tsan)
4007         cc_default="${toolchain%-tsan}"
4008         add_cflags  -fsanitize=thread
4009         add_ldflags -fsanitize=thread
4010         case "$toolchain" in
4011             gcc-tsan)
4012                 add_cflags  -fPIC
4013                 add_ldflags -fPIC
4014                 ;;
4015         esac
4016     ;;
4017     *-usan)
4018         cc_default="${toolchain%-usan}"
4019         add_cflags  -fsanitize=undefined
4020         add_ldflags -fsanitize=undefined
4021     ;;
4022     valgrind-*)
4023         target_exec_default="valgrind"
4024         case "$toolchain" in
4025             valgrind-massif)
4026                 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"
4027                 ;;
4028             valgrind-memcheck)
4029                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
4030                 ;;
4031         esac
4032     ;;
4033     msvc)
4034         # Check whether the current MSVC version needs the C99 converter.
4035         # From MSVC 2013 (compiler major version 18) onwards, it does actually
4036         # support enough of C99 to build ffmpeg. Default to the new
4037         # behaviour if the regexp was unable to match anything, since this
4038         # successfully parses the version number of existing supported
4039         # versions that require the converter (MSVC 2010 and 2012).
4040         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
4041         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
4042             cc_default="cl"
4043             cxx_default="cl"
4044         else
4045             die "Unsupported MSVC version (2013 or newer required)"
4046         fi
4047         ld_default="$source_path/compat/windows/mslink"
4048         nm_default="dumpbin -symbols"
4049         ar_default="lib"
4050         case "$arch" in
4051         aarch64|arm64)
4052             as_default="armasm64"
4053             ;;
4054         arm*)
4055             as_default="armasm"
4056             ;;
4057         esac
4058         target_os_default="win32"
4059         # Use a relative path for TMPDIR. This makes sure all the
4060         # ffconf temp files are written with a relative path, avoiding
4061         # issues with msys/win32 path conversion for MSVC parameters
4062         # such as -Fo<file> or -out:<file>.
4063         TMPDIR=.
4064     ;;
4065     icl)
4066         cc_default="icl"
4067         ld_default="xilink"
4068         nm_default="dumpbin -symbols"
4069         ar_default="xilib"
4070         target_os_default="win32"
4071         TMPDIR=.
4072     ;;
4073     gcov)
4074         add_cflags  -fprofile-arcs -ftest-coverage
4075         add_ldflags -fprofile-arcs -ftest-coverage
4076     ;;
4077     llvm-cov)
4078         add_cflags -fprofile-arcs -ftest-coverage
4079         add_ldflags --coverage
4080     ;;
4081     hardened)
4082         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
4083         add_cflags   -fno-strict-overflow -fstack-protector-all
4084         add_ldflags  -Wl,-z,relro -Wl,-z,now
4085         add_cflags   -fPIE
4086         add_ldexeflags -fPIE -pie
4087     ;;
4088     ?*)
4089         die "Unknown toolchain $toolchain"
4090     ;;
4091 esac
4092
4093 if test -n "$cross_prefix"; then
4094     test -n "$arch" && test -n "$target_os" ||
4095         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
4096     enable cross_compile
4097 fi
4098
4099 ar_default="${cross_prefix}${ar_default}"
4100 cc_default="${cross_prefix}${cc_default}"
4101 cxx_default="${cross_prefix}${cxx_default}"
4102 nm_default="${cross_prefix}${nm_default}"
4103 pkg_config_default="${cross_prefix}${pkg_config_default}"
4104 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
4105     ranlib_default="${cross_prefix}${ranlib_default} -D"
4106 else
4107     ranlib_default="${cross_prefix}${ranlib_default}"
4108 fi
4109 strip_default="${cross_prefix}${strip_default}"
4110 windres_default="${cross_prefix}${windres_default}"
4111
4112 sysinclude_default="${sysroot}/usr/include"
4113
4114 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
4115     target_exec target_os x86asmexe nvcc
4116 enabled cross_compile || host_cc_default=$cc
4117 set_default host_cc
4118
4119 pkg_config_fail_message=""
4120 if ! $pkg_config --version >/dev/null 2>&1; then
4121     warn "$pkg_config not found, library detection may fail."
4122     pkg_config=false
4123 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
4124     pkg_config_fail_message="
4125 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
4126 fi
4127
4128 if test $doxygen != $doxygen_default && \
4129   ! $doxygen --version >/dev/null 2>&1; then
4130     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
4131 fi
4132
4133 exesuf() {
4134     case $1 in
4135         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
4136     esac
4137 }
4138
4139 EXESUF=$(exesuf $target_os)
4140 HOSTEXESUF=$(exesuf $host_os)
4141
4142 # set temporary file name
4143 : ${TMPDIR:=$TEMPDIR}
4144 : ${TMPDIR:=$TMP}
4145 : ${TMPDIR:=/tmp}
4146
4147 if [ -n "$tempprefix" ] ; then
4148     mktemp(){
4149         tmpname="$tempprefix.${HOSTNAME}.${UID}"
4150         echo "$tmpname"
4151         mkdir "$tmpname"
4152     }
4153 elif ! test_cmd mktemp -u XXXXXX; then
4154     # simple replacement for missing mktemp
4155     # NOT SAFE FOR GENERAL USE
4156     mktemp(){
4157         tmpname="${2%%XXX*}.${HOSTNAME}.${UID}.$$"
4158         echo "$tmpname"
4159         mkdir "$tmpname"
4160     }
4161 fi
4162
4163 FFTMPDIR=$(mktemp -d "${TMPDIR}/ffconf.XXXXXXXX" 2> /dev/null) ||
4164     die "Unable to create temporary directory in $TMPDIR."
4165
4166 tmpfile(){
4167     tmp="${FFTMPDIR}/test"$2
4168     (set -C; exec > $tmp) 2> /dev/null ||
4169         die "Unable to create temporary file in $FFTMPDIR."
4170     eval $1=$tmp
4171 }
4172
4173 trap 'rm -rf -- "$FFTMPDIR"' EXIT
4174 trap 'exit 2' INT
4175
4176 tmpfile TMPASM .asm
4177 tmpfile TMPC   .c
4178 tmpfile TMPCPP .cpp
4179 tmpfile TMPE   $EXESUF
4180 tmpfile TMPH   .h
4181 tmpfile TMPM   .m
4182 tmpfile TMPO   .o
4183 tmpfile TMPS   .S
4184 tmpfile TMPSH  .sh
4185 tmpfile TMPV   .ver
4186
4187 unset -f mktemp
4188
4189 chmod +x $TMPE
4190
4191 # make sure we can execute files in $TMPDIR
4192 cat > $TMPSH 2>> $logfile <<EOF
4193 #! /bin/sh
4194 EOF
4195 chmod +x $TMPSH >> $logfile 2>&1
4196 if ! $TMPSH >> $logfile 2>&1; then
4197     cat <<EOF
4198 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
4199 variable to another directory and make sure that it is not mounted noexec.
4200 EOF
4201     die "Sanity test failed."
4202 fi
4203
4204 armasm_flags(){
4205     for flag; do
4206         case $flag in
4207             # Filter out MSVC cl.exe options from cflags that shouldn't
4208             # be passed to gas-preprocessor
4209             -M[TD]*)                                            ;;
4210             *)                  echo $flag                      ;;
4211         esac
4212    done
4213 }
4214
4215 cparser_flags(){
4216     for flag; do
4217         case $flag in
4218             -Wno-switch)             echo -Wno-switch-enum ;;
4219             -Wno-format-zero-length) ;;
4220             -Wdisabled-optimization) ;;
4221             -Wno-pointer-sign)       echo -Wno-other ;;
4222             *)                       echo $flag ;;
4223         esac
4224     done
4225 }
4226
4227 msvc_common_flags(){
4228     for flag; do
4229         case $flag in
4230             # In addition to specifying certain flags under the compiler
4231             # specific filters, they must be specified here as well or else the
4232             # generic catch all at the bottom will print the original flag.
4233             -Wall)                ;;
4234             -Wextra)              ;;
4235             -std=c99)             ;;
4236             # Common flags
4237             -fomit-frame-pointer) ;;
4238             -g)                   echo -Z7 ;;
4239             -fno-math-errno)      ;;
4240             -fno-common)          ;;
4241             -fno-signed-zeros)    ;;
4242             -fPIC)                ;;
4243             -mthumb)              ;;
4244             -march=*)             ;;
4245             -lz)                  echo zlib.lib ;;
4246             -lx264)               echo libx264.lib ;;
4247             -lstdc++)             ;;
4248             -l*)                  echo ${flag#-l}.lib ;;
4249             -LARGEADDRESSAWARE)   echo $flag ;;
4250             -L*)                  echo -libpath:${flag#-L} ;;
4251             *)                    echo $flag ;;
4252         esac
4253     done
4254 }
4255
4256 msvc_flags(){
4257     msvc_common_flags "$@"
4258     for flag; do
4259         case $flag in
4260             -Wall)                echo -W3 -wd4018 -wd4146 -wd4244 -wd4305     \
4261                                        -wd4554 ;;
4262             -Wextra)              echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
4263                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
4264                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
4265                                        -wd4307 \
4266                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
4267         esac
4268     done
4269 }
4270
4271 icl_flags(){
4272     msvc_common_flags "$@"
4273     for flag; do
4274         case $flag in
4275             # Despite what Intel's documentation says -Wall, which is supported
4276             # on Windows, does enable remarks so disable them here.
4277             -Wall)                echo $flag -Qdiag-disable:remark ;;
4278             -std=c99)             echo -Qstd=c99 ;;
4279             -flto)                echo -ipo ;;
4280         esac
4281     done
4282 }
4283
4284 icc_flags(){
4285     for flag; do
4286         case $flag in
4287             -flto)                echo -ipo ;;
4288             *)                    echo $flag ;;
4289         esac
4290     done
4291 }
4292
4293 suncc_flags(){
4294     for flag; do
4295         case $flag in
4296             -march=*|-mcpu=*)
4297                 case "${flag#*=}" in
4298                     native)                   echo -xtarget=native       ;;
4299                     v9|niagara)               echo -xarch=sparc          ;;
4300                     ultrasparc)               echo -xarch=sparcvis       ;;
4301                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
4302                     i586|pentium)             echo -xchip=pentium        ;;
4303                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
4304                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
4305                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
4306                     pentium4*)          echo -xtarget=pentium4           ;;
4307                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
4308                     *-sse3)             echo -xarch=sse3                 ;;
4309                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
4310                     bonnell)                   echo -xarch=ssse3         ;;
4311                     corei7|nehalem)            echo -xtarget=nehalem     ;;
4312                     westmere)                  echo -xtarget=westmere    ;;
4313                     silvermont)                echo -xarch=sse4_2        ;;
4314                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
4315                     core-avx*|ivybridge|haswell|broadwell|skylake*|knl)
4316                                                echo -xarch=avx           ;;
4317                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
4318                     btver1)                    echo -xarch=amdsse4a      ;;
4319                     btver2|bdver*|znver*)      echo -xarch=avx           ;;
4320                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
4321                     k8|opteron|athlon64|athlon-fx)
4322                                                echo -xarch=sse2a         ;;
4323                     athlon*)                   echo -xarch=pentium_proa  ;;
4324                 esac
4325                 ;;
4326             -std=c99)             echo -xc99              ;;
4327             -fomit-frame-pointer) echo -xregs=frameptr    ;;
4328             -fPIC)                echo -KPIC -xcode=pic32 ;;
4329             -W*,*)                echo $flag              ;;
4330             -f*-*|-W*|-mimpure-text)                      ;;
4331             -shared)              echo -G                 ;;
4332             *)                    echo $flag              ;;
4333         esac
4334     done
4335 }
4336
4337 probe_cc(){
4338     pfx=$1
4339     _cc=$2
4340     first=$3
4341
4342     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
4343     unset _ld_o _ldflags _ld_lib _ld_path
4344     unset _depflags _DEPCMD _DEPFLAGS
4345     _flags_filter=echo
4346
4347     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
4348         true # no-op to avoid reading stdin in following checks
4349     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
4350         _type=llvm_gcc
4351         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
4352         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
4353         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4354         _cflags_speed='-O3'
4355         _cflags_size='-Os'
4356     elif $_cc -v 2>&1 | grep -qi ^gcc; then
4357         _type=gcc
4358         gcc_version=$($_cc --version | head -n1)
4359         gcc_basever=$($_cc -dumpversion)
4360         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
4361         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
4362         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
4363         case $gcc_basever in
4364             2) ;;
4365             2.*) ;;
4366             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
4367         esac
4368         if [ "$first" = true ]; then
4369             case $gcc_basever in
4370                 4.2*)
4371                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
4372             esac
4373         fi
4374         _cflags_speed='-O3'
4375         _cflags_size='-Os'
4376     elif $_cc --version 2>/dev/null | grep -q ^icc; then
4377         _type=icc
4378         _ident=$($_cc --version | head -n1)
4379         _depflags='-MMD'
4380         _cflags_speed='-O3'
4381         _cflags_size='-Os'
4382         _cflags_noopt='-O1'
4383         _flags_filter=icc_flags
4384     elif $_cc -v 2>&1 | grep -q xlc; then
4385         _type=xlc
4386         _ident=$($_cc -qversion 2>/dev/null | head -n1)
4387         _cflags_speed='-O5'
4388         _cflags_size='-O5 -qcompact'
4389     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
4390         test -d "$sysroot" || die "No valid sysroot specified."
4391         _type=armcc
4392         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
4393         armcc_conf="$PWD/armcc.conf"
4394         $_cc --arm_linux_configure                 \
4395              --arm_linux_config_file="$armcc_conf" \
4396              --configure_sysroot="$sysroot"        \
4397              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
4398              die "Error creating armcc configuration file."
4399         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
4400         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
4401         as_default="${cross_prefix}gcc"
4402         _depflags='-MMD'
4403         _cflags_speed='-O3'
4404         _cflags_size='-Os'
4405     elif $_cc -v 2>&1 | grep -q clang && ! $_cc -? > /dev/null 2>&1; then
4406         _type=clang
4407         _ident=$($_cc --version 2>/dev/null | head -n1)
4408         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4409         _cflags_speed='-O3'
4410         _cflags_size='-Oz'
4411     elif $_cc -V 2>&1 | grep -q Sun; then
4412         _type=suncc
4413         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
4414         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
4415         _DEPFLAGS='-xM1 -xc99'
4416         _ldflags='-std=c99'
4417         _cflags_speed='-O5'
4418         _cflags_size='-O5 -xspace'
4419         _flags_filter=suncc_flags
4420     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
4421         _type=pathscale
4422         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4423         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4424         _cflags_speed='-O2'
4425         _cflags_size='-Os'
4426         _flags_filter='filter_out -Wdisabled-optimization'
4427     elif $_cc -v 2>&1 | grep -q Open64; then
4428         _type=open64
4429         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4430         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4431         _cflags_speed='-O2'
4432         _cflags_size='-Os'
4433         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
4434     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
4435         _type=armasm
4436         _ident=$($_cc | head -n1)
4437         # 4509: "This form of conditional instruction is deprecated"
4438         _flags="-nologo -ignore 4509"
4439         _flags_filter=armasm_flags
4440     elif $_cc 2>&1 | grep -q Intel; then
4441         _type=icl
4442         _ident=$($_cc 2>&1 | head -n1)
4443         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
4444         # Not only is O3 broken on 13.x+ but it is slower on all previous
4445         # versions (tested) as well.
4446         _cflags_speed="-O2"
4447         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
4448         if $_cc 2>&1 | grep -q Linker; then
4449             _ld_o='-out:$@'
4450         else
4451             _ld_o='-Fe$@'
4452         fi
4453         _cc_o='-Fo$@'
4454         _cc_e='-P'
4455         _flags_filter=icl_flags
4456         _ld_lib='lib%.a'
4457         _ld_path='-libpath:'
4458         # -Qdiag-error to make icl error when seeing certain unknown arguments
4459         _flags='-nologo -Qdiag-error:4044,10157'
4460         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
4461         # with MSVC which enables it by default.
4462         _cflags='-Qms0 -Qvec- -Qsimd- -GS -fp:precise'
4463         disable stripping
4464     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
4465         # lld can emulate multiple different linkers; in ms link.exe mode,
4466         # the -? parameter gives the help output which contains an identifyable
4467         # string, while it gives an error in other modes.
4468         _type=lld-link
4469         # The link.exe mode doesn't have a switch for getting the version,
4470         # but we can force it back to gnu mode and get the version from there.
4471         _ident=$($_cc -flavor gnu --version 2>/dev/null)
4472         _ld_o='-out:$@'
4473         _flags_filter=msvc_flags
4474         _ld_lib='lib%.a'
4475         _ld_path='-libpath:'
4476     elif $_cc -nologo- 2>&1 | grep -q Microsoft || { $_cc -v 2>&1 | grep -q clang && $_cc -? > /dev/null 2>&1; }; then
4477         _type=msvc
4478         _ident=$($_cc 2>&1 | head -n1 | tr -d '\r')
4479         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
4480         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
4481         _cflags_speed="-O2"
4482         _cflags_size="-O1"
4483         _cflags_noopt="-O1"
4484         if $_cc -nologo- 2>&1 | grep -q Linker; then
4485             _ld_o='-out:$@'
4486         else
4487             _ld_o='-Fe$@'
4488         fi
4489         _cc_o='-Fo$@'
4490         _cc_e='-P -Fi$@'
4491         _flags_filter=msvc_flags
4492         _ld_lib='lib%.a'
4493         _ld_path='-libpath:'
4494         _flags='-nologo'
4495         disable stripping
4496     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
4497         _type=cparser
4498         _ident=$($_cc --version | head -n1)
4499         _depflags='-MMD'
4500         _cflags_speed='-O4'
4501         _cflags_size='-O2'
4502         _flags_filter=cparser_flags
4503     fi
4504
4505     eval ${pfx}_type=\$_type
4506     eval ${pfx}_ident=\$_ident
4507 }
4508
4509 set_ccvars(){
4510     eval ${1}_C=\${_cc_c-\${${1}_C}}
4511     eval ${1}_E=\${_cc_e-\${${1}_E}}
4512     eval ${1}_O=\${_cc_o-\${${1}_O}}
4513
4514     if [ -n "$_depflags" ]; then
4515         eval ${1}_DEPFLAGS=\$_depflags
4516     else
4517         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
4518         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
4519         eval DEP${1}FLAGS=\$_flags
4520     fi
4521 }
4522
4523 probe_cc cc "$cc" "true"
4524 cflags_filter=$_flags_filter
4525 cflags_speed=$_cflags_speed
4526 cflags_size=$_cflags_size
4527 cflags_noopt=$_cflags_noopt
4528 add_cflags $_flags $_cflags
4529 cc_ldflags=$_ldflags
4530 set_ccvars CC
4531 set_ccvars CXX
4532
4533 probe_cc hostcc "$host_cc"
4534 host_cflags_filter=$_flags_filter
4535 host_cflags_speed=$_cflags_speed
4536 add_host_cflags  $_flags $_cflags
4537 set_ccvars HOSTCC
4538
4539 test -n "$cc_type" && enable $cc_type ||
4540     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4541
4542 : ${as_default:=$cc}
4543 : ${objcc_default:=$cc}
4544 : ${dep_cc_default:=$cc}
4545 : ${ld_default:=$cc}
4546 : ${host_ld_default:=$host_cc}
4547 set_default ar as objcc dep_cc ld ln_s host_ld windres
4548
4549 probe_cc as "$as"
4550 asflags_filter=$_flags_filter
4551 add_asflags $_flags $_cflags
4552 set_ccvars AS
4553
4554 probe_cc objcc "$objcc"
4555 objcflags_filter=$_flags_filter
4556 add_objcflags $_flags $_cflags
4557 set_ccvars OBJC
4558
4559 probe_cc ld "$ld"
4560 ldflags_filter=$_flags_filter
4561 add_ldflags $_flags $_ldflags
4562 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4563 LD_O=${_ld_o-$LD_O}
4564 LD_LIB=${_ld_lib-$LD_LIB}
4565 LD_PATH=${_ld_path-$LD_PATH}
4566
4567 probe_cc hostld "$host_ld"
4568 host_ldflags_filter=$_flags_filter
4569 add_host_ldflags $_flags $_ldflags
4570 HOSTLD_O=${_ld_o-$HOSTLD_O}
4571
4572 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4573     probe_cc depcc "$dep_cc"
4574     CCDEP=${_DEPCMD:-$DEPCMD}
4575     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4576     DEPCCFLAGS=$_flags
4577 fi
4578
4579 if $ar 2>&1 | grep -q Microsoft; then
4580     arflags="-nologo"
4581     ar_o='-out:$@'
4582 elif $ar 2>&1 | grep -q "\[D\] "; then
4583     arflags="rcD"
4584     ar_o='$@'
4585 else
4586     arflags="rc"
4587     ar_o='$@'
4588 fi
4589
4590 add_cflags $extra_cflags
4591 add_cxxflags $extra_cxxflags
4592 add_objcflags $extra_objcflags
4593 add_asflags $extra_cflags
4594
4595 if test -n "$sysroot"; then
4596     case "$cc_type" in
4597         gcc|llvm_gcc|clang)
4598             add_cppflags --sysroot="$sysroot"
4599             add_ldflags --sysroot="$sysroot"
4600         ;;
4601     esac
4602 fi
4603
4604 if test "$cpu" = host; then
4605     enabled cross_compile &&
4606         die "--cpu=host makes no sense when cross-compiling."
4607
4608     case "$cc_type" in
4609         gcc|llvm_gcc)
4610             check_native(){
4611                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4612                 sed -n "/cc1.*$1=/{
4613                             s/.*$1=\\([^ ]*\\).*/\\1/
4614                             p
4615                             q
4616                         }" $TMPE
4617             }
4618             cpu=$(check_native -march || check_native -mcpu)
4619         ;;
4620         clang)
4621             check_native(){
4622                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4623                 sed -n "/cc1.*-target-cpu /{
4624                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4625                             p
4626                             q
4627                         }" $TMPE
4628             }
4629             cpu=$(check_native -march)
4630         ;;
4631     esac
4632
4633     test "${cpu:-host}" = host &&
4634         die "--cpu=host not supported with compiler $cc"
4635 fi
4636
4637 # Deal with common $arch aliases
4638 case "$arch" in
4639     aarch64|arm64)
4640         arch="aarch64"
4641     ;;
4642     arm*|iPad*|iPhone*)
4643         arch="arm"
4644     ;;
4645     mips*|IP*)
4646         case "$arch" in
4647         *el)
4648             add_cppflags -EL
4649             add_ldflags -EL
4650         ;;
4651         *eb)
4652             add_cppflags -EB
4653             add_ldflags -EB
4654         ;;
4655         esac
4656         arch="mips"
4657     ;;
4658     parisc*|hppa*)
4659         arch="parisc"
4660     ;;
4661     "Power Macintosh"|ppc*|powerpc*)
4662         arch="ppc"
4663     ;;
4664     s390|s390x)
4665         arch="s390"
4666     ;;
4667     sh4|sh)
4668         arch="sh4"
4669     ;;
4670     sun4*|sparc*)
4671         arch="sparc"
4672     ;;
4673     tilegx|tile-gx)
4674         arch="tilegx"
4675     ;;
4676     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4677         arch="x86"
4678     ;;
4679 esac
4680
4681 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4682 enable $arch
4683
4684 # Add processor-specific flags
4685 if enabled aarch64; then
4686
4687     case $cpu in
4688         armv*)
4689             cpuflags="-march=$cpu"
4690         ;;
4691         *)
4692             cpuflags="-mcpu=$cpu"
4693         ;;
4694     esac
4695
4696 elif enabled alpha; then
4697
4698     cpuflags="-mcpu=$cpu"
4699
4700 elif enabled arm; then
4701
4702     check_arm_arch() {
4703         test_cpp_condition stddef.h \
4704             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4705             $cpuflags
4706     }
4707
4708     probe_arm_arch() {
4709         if   check_arm_arch 4;        then echo armv4
4710         elif check_arm_arch 4T;       then echo armv4t
4711         elif check_arm_arch 5;        then echo armv5
4712         elif check_arm_arch 5E;       then echo armv5e
4713         elif check_arm_arch 5T;       then echo armv5t
4714         elif check_arm_arch 5TE;      then echo armv5te
4715         elif check_arm_arch 5TEJ;     then echo armv5te
4716         elif check_arm_arch 6;        then echo armv6
4717         elif check_arm_arch 6J;       then echo armv6j
4718         elif check_arm_arch 6K;       then echo armv6k
4719         elif check_arm_arch 6Z;       then echo armv6z
4720         elif check_arm_arch 6KZ;      then echo armv6zk
4721         elif check_arm_arch 6ZK;      then echo armv6zk
4722         elif check_arm_arch 6T2;      then echo armv6t2
4723         elif check_arm_arch 7;        then echo armv7
4724         elif check_arm_arch 7A  7_A;  then echo armv7-a
4725         elif check_arm_arch 7S;       then echo armv7-a
4726         elif check_arm_arch 7R  7_R;  then echo armv7-r
4727         elif check_arm_arch 7M  7_M;  then echo armv7-m
4728         elif check_arm_arch 7EM 7E_M; then echo armv7-m
4729         elif check_arm_arch 8A  8_A;  then echo armv8-a
4730         fi
4731     }
4732
4733     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4734
4735     case $cpu in
4736         armv*)
4737             cpuflags="-march=$cpu"
4738             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4739         ;;
4740         *)
4741             cpuflags="-mcpu=$cpu"
4742             case $cpu in
4743                 cortex-a*)                               subarch=armv7a  ;;
4744                 cortex-r*)                               subarch=armv7r  ;;
4745                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4746                 arm11*)                                  subarch=armv6   ;;
4747                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4748                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4749                 *)                             subarch=$(probe_arm_arch) ;;
4750             esac
4751         ;;
4752     esac
4753
4754     case "$subarch" in
4755         armv5t*)    enable fast_clz                ;;
4756         armv[6-8]*)
4757             enable fast_clz
4758             disabled fast_unaligned || enable fast_unaligned
4759             ;;
4760     esac
4761
4762 elif enabled avr32; then
4763
4764     case $cpu in
4765         ap7[02]0[0-2])
4766             subarch="avr32_ap"
4767             cpuflags="-mpart=$cpu"
4768         ;;
4769         ap)
4770             subarch="avr32_ap"
4771             cpuflags="-march=$cpu"
4772         ;;
4773         uc3[ab]*)
4774             subarch="avr32_uc"
4775             cpuflags="-mcpu=$cpu"
4776         ;;
4777         uc)
4778             subarch="avr32_uc"
4779             cpuflags="-march=$cpu"
4780         ;;
4781     esac
4782
4783 elif enabled bfin; then
4784
4785     cpuflags="-mcpu=$cpu"
4786
4787 elif enabled mips; then
4788
4789     cpuflags="-march=$cpu"
4790
4791     if [ "$cpu" != "generic" ]; then
4792         disable mips32r2
4793         disable mips32r5
4794         disable mips64r2
4795         disable mips32r6
4796         disable mips64r6
4797         disable loongson2
4798         disable loongson3
4799
4800         case $cpu in
4801             24kc|24kf*|24kec|34kc|1004kc|24kef*|34kf*|1004kf*|74kc|74kf)
4802                 enable mips32r2
4803                 disable msa
4804             ;;
4805             p5600|i6400|p6600)
4806                 disable mipsdsp
4807                 disable mipsdspr2
4808             ;;
4809             loongson*)
4810                 enable loongson2
4811                 enable loongson3
4812                 enable local_aligned
4813                 enable simd_align_16
4814                 enable fast_64bit
4815                 enable fast_clz
4816                 enable fast_cmov
4817                 enable fast_unaligned
4818                 disable aligned_stack
4819                 disable mipsfpu
4820                 disable mipsdsp
4821                 disable mipsdspr2
4822                 # When gcc version less than 5.3.0, add -fno-expensive-optimizations flag.
4823                 if [ $cc == gcc ]; then
4824                     gcc_version=$(gcc -dumpversion)
4825                     if [ "$(echo "$gcc_version 5.3.0" | tr " " "\n" | sort -rV | head -n 1)" == "$gcc_version" ]; then
4826                         expensive_optimization_flag=""
4827                     else
4828                         expensive_optimization_flag="-fno-expensive-optimizations"
4829                     fi
4830                 fi
4831                 case $cpu in
4832                     loongson3*)
4833                         cpuflags="-march=loongson3a -mhard-float $expensive_optimization_flag"
4834                     ;;
4835                     loongson2e)
4836                         cpuflags="-march=loongson2e -mhard-float $expensive_optimization_flag"
4837                     ;;
4838                     loongson2f)
4839                         cpuflags="-march=loongson2f -mhard-float $expensive_optimization_flag"
4840                     ;;
4841                 esac
4842             ;;
4843             *)
4844                 # Unknown CPU. Disable everything.
4845                 warn "unknown CPU. Disabling all MIPS optimizations."
4846                 disable mipsfpu
4847                 disable mipsdsp
4848                 disable mipsdspr2
4849                 disable msa
4850                 disable mmi
4851             ;;
4852         esac
4853
4854         case $cpu in
4855             24kc)
4856                 disable mipsfpu
4857                 disable mipsdsp
4858                 disable mipsdspr2
4859             ;;
4860             24kf*)
4861                 disable mipsdsp
4862                 disable mipsdspr2
4863             ;;
4864             24kec|34kc|1004kc)
4865                 disable mipsfpu
4866                 disable mipsdspr2
4867             ;;
4868             24kef*|34kf*|1004kf*)
4869                 disable mipsdspr2
4870             ;;
4871             74kc)
4872                 disable mipsfpu
4873             ;;
4874             p5600)
4875                 enable mips32r5
4876                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
4877             ;;
4878             i6400)
4879                 enable mips64r6
4880                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4881             ;;
4882             p6600)
4883                 enable mips64r6
4884                 check_cflags "-mtune=p6600 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4885             ;;
4886         esac
4887     else
4888         # We do not disable anything. Is up to the user to disable the unwanted features.
4889         warn 'generic cpu selected'
4890     fi
4891
4892 elif enabled ppc; then
4893
4894     disable ldbrx
4895
4896     case $(tolower $cpu) in
4897         601|ppc601|powerpc601)
4898             cpuflags="-mcpu=601"
4899             disable altivec
4900         ;;
4901         603*|ppc603*|powerpc603*)
4902             cpuflags="-mcpu=603"
4903             disable altivec
4904         ;;
4905         604*|ppc604*|powerpc604*)
4906             cpuflags="-mcpu=604"
4907             disable altivec
4908         ;;
4909         g3|75*|ppc75*|powerpc75*)
4910             cpuflags="-mcpu=750"
4911             disable altivec
4912         ;;
4913         g4|745*|ppc745*|powerpc745*)
4914             cpuflags="-mcpu=7450"
4915             disable vsx
4916         ;;
4917         74*|ppc74*|powerpc74*)
4918             cpuflags="-mcpu=7400"
4919             disable vsx
4920         ;;
4921         g5|970|ppc970|powerpc970)
4922             cpuflags="-mcpu=970"
4923             disable vsx
4924         ;;
4925         power[3-6]*)
4926             cpuflags="-mcpu=$cpu"
4927             disable vsx
4928         ;;
4929         power[7-8]*)
4930             cpuflags="-mcpu=$cpu"
4931         ;;
4932         cell)
4933             cpuflags="-mcpu=cell"
4934             enable ldbrx
4935             disable vsx
4936         ;;
4937         e500mc)
4938             cpuflags="-mcpu=e500mc"
4939             disable altivec
4940         ;;
4941         e500v2)
4942             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
4943             disable altivec
4944             disable dcbzl
4945         ;;
4946         e500)
4947             cpuflags="-mcpu=8540 -mhard-float"
4948 &n