lavc: Add coded bitstream read/write support for H.264
[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   --disable-ffserver       disable ffserver build
120
121 Documentation options:
122   --disable-doc            do not build documentation
123   --disable-htmlpages      do not build HTML documentation pages
124   --disable-manpages       do not build man documentation pages
125   --disable-podpages       do not build POD documentation pages
126   --disable-txtpages       do not build text documentation pages
127
128 Component options:
129   --disable-avdevice       disable libavdevice build
130   --disable-avcodec        disable libavcodec build
131   --disable-avformat       disable libavformat build
132   --disable-swresample     disable libswresample build
133   --disable-swscale        disable libswscale build
134   --disable-postproc       disable libpostproc build
135   --disable-avfilter       disable libavfilter build
136   --enable-avresample      enable libavresample build [no]
137   --disable-pthreads       disable pthreads [autodetect]
138   --disable-w32threads     disable Win32 threads [autodetect]
139   --disable-os2threads     disable OS/2 threads [autodetect]
140   --disable-network        disable network support [no]
141   --disable-dct            disable DCT code
142   --disable-dwt            disable DWT code
143   --disable-error-resilience disable error resilience code
144   --disable-lsp            disable LSP code
145   --disable-lzo            disable LZO decoder code
146   --disable-mdct           disable MDCT code
147   --disable-rdft           disable RDFT code
148   --disable-fft            disable FFT code
149   --disable-faan           disable floating point AAN (I)DCT code
150   --disable-pixelutils     disable pixel utils in libavutil
151
152 Individual component options:
153   --disable-everything     disable all components listed below
154   --disable-encoder=NAME   disable encoder NAME
155   --enable-encoder=NAME    enable encoder NAME
156   --disable-encoders       disable all encoders
157   --disable-decoder=NAME   disable decoder NAME
158   --enable-decoder=NAME    enable decoder NAME
159   --disable-decoders       disable all decoders
160   --disable-hwaccel=NAME   disable hwaccel NAME
161   --enable-hwaccel=NAME    enable hwaccel NAME
162   --disable-hwaccels       disable all hwaccels
163   --disable-muxer=NAME     disable muxer NAME
164   --enable-muxer=NAME      enable muxer NAME
165   --disable-muxers         disable all muxers
166   --disable-demuxer=NAME   disable demuxer NAME
167   --enable-demuxer=NAME    enable demuxer NAME
168   --disable-demuxers       disable all demuxers
169   --enable-parser=NAME     enable parser NAME
170   --disable-parser=NAME    disable parser NAME
171   --disable-parsers        disable all parsers
172   --enable-bsf=NAME        enable bitstream filter NAME
173   --disable-bsf=NAME       disable bitstream filter NAME
174   --disable-bsfs           disable all bitstream filters
175   --enable-protocol=NAME   enable protocol NAME
176   --disable-protocol=NAME  disable protocol NAME
177   --disable-protocols      disable all protocols
178   --enable-indev=NAME      enable input device NAME
179   --disable-indev=NAME     disable input device NAME
180   --disable-indevs         disable input devices
181   --enable-outdev=NAME     enable output device NAME
182   --disable-outdev=NAME    disable output device NAME
183   --disable-outdevs        disable output devices
184   --disable-devices        disable all devices
185   --enable-filter=NAME     enable filter NAME
186   --disable-filter=NAME    disable filter NAME
187   --disable-filters        disable all filters
188   --disable-v4l2_m2m       disable V4L2 mem2mem code [autodetect]
189
190 External library support:
191
192   Using any of the following switches will allow FFmpeg to link to the
193   corresponding external library. All the components depending on that library
194   will become enabled, if all their other dependencies are met and they are not
195   explicitly disabled. E.g. --enable-libwavpack will enable linking to
196   libwavpack and allow the libwavpack encoder to be built, unless it is
197   specifically disabled with --disable-encoder=libwavpack.
198
199   Note that only the system libraries are auto-detected. All the other external
200   libraries must be explicitly enabled.
201
202   Also note that the following help text describes the purpose of the libraries
203   themselves, not all their features will necessarily be usable by FFmpeg.
204
205   --disable-alsa           disable ALSA support [autodetect]
206   --disable-appkit         disable Apple AppKit framework [autodetect]
207   --disable-avfoundation   disable Apple AVFoundation framework [autodetect]
208   --enable-avisynth        enable reading of AviSynth script files [no]
209   --disable-bzlib          disable bzlib [autodetect]
210   --disable-coreimage      disable Apple CoreImage framework [autodetect]
211   --enable-chromaprint     enable audio fingerprinting with chromaprint [no]
212   --enable-frei0r          enable frei0r video filtering [no]
213   --enable-gcrypt          enable gcrypt, needed for rtmp(t)e support
214                            if openssl, librtmp or gmp is not used [no]
215   --enable-gmp             enable gmp, needed for rtmp(t)e support
216                            if openssl or librtmp is not used [no]
217   --enable-gnutls          enable gnutls, needed for https support
218                            if openssl is not used [no]
219   --disable-iconv          disable iconv [autodetect]
220   --disable-jack           disable libjack support [autodetect]
221   --enable-jni             enable JNI support [no]
222   --enable-ladspa          enable LADSPA audio filtering [no]
223   --enable-libass          enable libass subtitles rendering,
224                            needed for subtitles and ass filter [no]
225   --enable-libbluray       enable BluRay reading using libbluray [no]
226   --enable-libbs2b         enable bs2b DSP library [no]
227   --enable-libcaca         enable textual display using libcaca [no]
228   --enable-libcelt         enable CELT decoding via libcelt [no]
229   --enable-libcdio         enable audio CD grabbing with libcdio [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-libkvazaar      enable HEVC encoding via libkvazaar [no]
242   --enable-libmodplug      enable ModPlug via libmodplug [no]
243   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
244   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
245   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
246   --enable-libopencv       enable video filtering via libopencv [no]
247   --enable-libopenh264     enable H.264 encoding via OpenH264 [no]
248   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
249   --enable-libopenmpt      enable decoding tracked files via libopenmpt [no]
250   --enable-libopus         enable Opus de/encoding via libopus [no]
251   --enable-libpulse        enable Pulseaudio input via libpulse [no]
252   --enable-librsvg         enable SVG rasterization via librsvg [no]
253   --enable-librubberband   enable rubberband needed for rubberband filter [no]
254   --enable-librtmp         enable RTMP[E] support via librtmp [no]
255   --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
256   --enable-libsmbclient    enable Samba protocol via libsmbclient [no]
257   --enable-libsnappy       enable Snappy compression, needed for hap encoding [no]
258   --enable-libsoxr         enable Include libsoxr resampling [no]
259   --enable-libspeex        enable Speex de/encoding via libspeex [no]
260   --enable-libssh          enable SFTP protocol via libssh [no]
261   --enable-libtesseract    enable Tesseract, needed for ocr filter [no]
262   --enable-libtheora       enable Theora encoding via libtheora [no]
263   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
264   --enable-libv4l2         enable libv4l2/v4l-utils [no]
265   --enable-libvidstab      enable video stabilization using vid.stab [no]
266   --enable-libvmaf         enable vmaf filter via libvmaf [no]
267   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
268   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
269                            native implementation exists [no]
270   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
271   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
272   --enable-libwebp         enable WebP encoding via libwebp [no]
273   --enable-libx264         enable H.264 encoding via x264 [no]
274   --enable-libx265         enable HEVC encoding via x265 [no]
275   --enable-libxavs         enable AVS encoding via xavs [no]
276   --enable-libxcb          enable X11 grabbing using XCB [autodetect]
277   --enable-libxcb-shm      enable X11 grabbing shm communication [autodetect]
278   --enable-libxcb-xfixes   enable X11 grabbing mouse rendering [autodetect]
279   --enable-libxcb-shape    enable X11 grabbing shape rendering [autodetect]
280   --enable-libxvid         enable Xvid encoding via xvidcore,
281                            native MPEG-4/Xvid encoder exists [no]
282   --enable-libxml2         enable XML parsing using the C library libxml2 [no]
283   --enable-libzimg         enable z.lib, needed for zscale filter [no]
284   --enable-libzmq          enable message passing via libzmq [no]
285   --enable-libzvbi         enable teletext support via libzvbi [no]
286   --disable-lzma           disable lzma [autodetect]
287   --enable-decklink        enable Blackmagic DeckLink I/O support [no]
288   --enable-libndi_newtek   enable Newteck NDI I/O support [no]
289   --enable-mediacodec      enable Android MediaCodec support [no]
290   --enable-libmysofa       enable libmysofa, needed for sofalizer filter [no]
291   --enable-openal          enable OpenAL 1.1 capture support [no]
292   --enable-opencl          enable OpenCL code
293   --enable-opengl          enable OpenGL rendering [no]
294   --enable-openssl         enable openssl, needed for https support
295                            if gnutls is not used [no]
296   --disable-sndio          disable sndio support [autodetect]
297   --disable-schannel       disable SChannel SSP, needed for TLS support on
298                            Windows if openssl and gnutls are not used [autodetect]
299   --disable-sdl2           disable sdl2 [autodetect]
300   --disable-securetransport disable Secure Transport, needed for TLS support
301                            on OSX if openssl and gnutls are not used [autodetect]
302   --disable-xlib           disable xlib [autodetect]
303   --disable-zlib           disable zlib [autodetect]
304
305   The following libraries provide various hardware acceleration features:
306   --disable-audiotoolbox   disable Apple AudioToolbox code [autodetect]
307   --disable-cuda           disable dynamically linked Nvidia CUDA code [autodetect]
308   --enable-cuda-sdk        enable CUDA features that require the CUDA SDK [no]
309   --disable-cuvid          disable Nvidia CUVID support [autodetect]
310   --disable-d3d11va        disable Microsoft Direct3D 11 video acceleration code [autodetect]
311   --disable-dxva2          disable Microsoft DirectX 9 video acceleration code [autodetect]
312   --enable-libdrm          enable DRM code (Linux) [no]
313   --enable-libmfx          enable Intel MediaSDK (AKA Quick Sync Video) code via libmfx [no]
314   --enable-libnpp          enable Nvidia Performance Primitives-based code [no]
315   --enable-mmal            enable Broadcom Multi-Media Abstraction Layer (Raspberry Pi) via MMAL [no]
316   --disable-nvenc          disable Nvidia video encoding code [autodetect]
317   --enable-omx             enable OpenMAX IL code [no]
318   --enable-omx-rpi         enable OpenMAX IL code for Raspberry Pi [no]
319   --enable-rkmpp           enable Rockchip Media Process Platform code [no]
320   --disable-vaapi          disable Video Acceleration API (mainly Unix/Intel) code [autodetect]
321   --disable-vda            disable Apple Video Decode Acceleration code [autodetect]
322   --disable-vdpau          disable Nvidia Video Decode and Presentation API for Unix code [autodetect]
323   --disable-videotoolbox   disable VideoToolbox code [autodetect]
324
325 Toolchain options:
326   --arch=ARCH              select architecture [$arch]
327   --cpu=CPU                select the minimum required CPU (affects
328                            instruction selection, may crash on older CPUs)
329   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
330   --progs-suffix=SUFFIX    program name suffix []
331   --enable-cross-compile   assume a cross-compiler is used
332   --sysroot=PATH           root of cross-build tree
333   --sysinclude=PATH        location of cross-build system headers
334   --target-os=OS           compiler targets OS [$target_os]
335   --target-exec=CMD        command to run executables on target
336   --target-path=DIR        path to view of build directory on target
337   --target-samples=DIR     path to samples directory on target
338   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
339   --toolchain=NAME         set tool defaults according to NAME
340   --nm=NM                  use nm tool NM [$nm_default]
341   --ar=AR                  use archive tool AR [$ar_default]
342   --as=AS                  use assembler AS [$as_default]
343   --ln_s=LN_S              use symbolic link tool LN_S [$ln_s_default]
344   --strip=STRIP            use strip tool STRIP [$strip_default]
345   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
346   --x86asmexe=EXE          use nasm-compatible assembler EXE [$x86asmexe_default]
347   --cc=CC                  use C compiler CC [$cc_default]
348   --cxx=CXX                use C compiler CXX [$cxx_default]
349   --objcc=OCC              use ObjC compiler OCC [$cc_default]
350   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
351   --nvcc=NVCC              use Nvidia CUDA compiler NVCC [$nvcc_default]
352   --ld=LD                  use linker LD [$ld_default]
353   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
354   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
355   --ranlib=RANLIB          use ranlib RANLIB [$ranlib_default]
356   --doxygen=DOXYGEN        use DOXYGEN to generate API doc [$doxygen_default]
357   --host-cc=HOSTCC         use host C compiler HOSTCC
358   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
359   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
360   --host-ld=HOSTLD         use host linker HOSTLD
361   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
362   --host-libs=HLIBS        use libs HLIBS when linking for host
363   --host-os=OS             compiler host OS [$target_os]
364   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
365   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
366   --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
367   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
368   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
369   --extra-ldlibflags=ELDFLAGS add ELDFLAGS to LDLIBFLAGS [$LDLIBFLAGS]
370   --extra-libs=ELIBS       add ELIBS [$ELIBS]
371   --extra-version=STRING   version string suffix []
372   --optflags=OPTFLAGS      override optimization-related compiler flags
373   --nvccflags=NVCCFLAGS    override nvcc flags [$nvccflags_default]
374   --build-suffix=SUFFIX    library name suffix []
375   --enable-pic             build position-independent code
376   --enable-thumb           compile for Thumb instruction set
377   --enable-lto             use link-time optimization
378   --env="ENV=override"     override the environment variables
379
380 Advanced options (experts only):
381   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
382   --custom-allocator=NAME  use a supported custom allocator
383   --disable-symver         disable symbol versioning
384   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
385   --disable-safe-bitstream-reader
386                            disable buffer boundary checking in bitreaders
387                            (faster, but may crash)
388   --sws-max-filter-size=N  the max filter size swscale uses [$sws_max_filter_size_default]
389
390 Optimization options (experts only):
391   --disable-asm            disable all assembly optimizations
392   --disable-altivec        disable AltiVec optimizations
393   --disable-vsx            disable VSX optimizations
394   --disable-power8         disable POWER8 optimizations
395   --disable-amd3dnow       disable 3DNow! optimizations
396   --disable-amd3dnowext    disable 3DNow! extended optimizations
397   --disable-mmx            disable MMX optimizations
398   --disable-mmxext         disable MMXEXT optimizations
399   --disable-sse            disable SSE optimizations
400   --disable-sse2           disable SSE2 optimizations
401   --disable-sse3           disable SSE3 optimizations
402   --disable-ssse3          disable SSSE3 optimizations
403   --disable-sse4           disable SSE4 optimizations
404   --disable-sse42          disable SSE4.2 optimizations
405   --disable-avx            disable AVX optimizations
406   --disable-xop            disable XOP optimizations
407   --disable-fma3           disable FMA3 optimizations
408   --disable-fma4           disable FMA4 optimizations
409   --disable-avx2           disable AVX2 optimizations
410   --disable-aesni          disable AESNI optimizations
411   --disable-armv5te        disable armv5te optimizations
412   --disable-armv6          disable armv6 optimizations
413   --disable-armv6t2        disable armv6t2 optimizations
414   --disable-vfp            disable VFP optimizations
415   --disable-neon           disable NEON optimizations
416   --disable-inline-asm     disable use of inline assembly
417   --disable-x86asm         disable use of standalone x86 assembly
418   --disable-mipsdsp        disable MIPS DSP ASE R1 optimizations
419   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
420   --disable-msa            disable MSA optimizations
421   --disable-mipsfpu        disable floating point MIPS optimizations
422   --disable-mmi            disable Loongson SIMD optimizations
423   --disable-fast-unaligned consider unaligned accesses slow
424
425 Developer options (useful when working on FFmpeg itself):
426   --disable-debug          disable debugging symbols
427   --enable-debug=LEVEL     set the debug level [$debuglevel]
428   --disable-optimizations  disable compiler optimizations
429   --enable-extra-warnings  enable more compiler warnings
430   --disable-stripping      disable stripping of executables and shared libraries
431   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
432                            2 causes a slowdown at runtime.
433   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
434   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
435                            leaks and errors, using the specified valgrind binary.
436                            Cannot be combined with --target-exec
437   --enable-ftrapv          Trap arithmetic overflows
438   --samples=PATH           location of test samples for FATE, if not set use
439                            \$FATE_SAMPLES at make invocation time.
440   --enable-neon-clobber-test check NEON registers for clobbering (should be
441                            used only for debugging purposes)
442   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
443                            should be used only for debugging purposes)
444   --enable-random          randomly enable/disable components
445   --disable-random
446   --enable-random=LIST     randomly enable/disable specific components or
447   --disable-random=LIST    component groups. LIST is a comma-separated list
448                            of NAME[:PROB] entries where NAME is a component
449                            (group) and PROB the probability associated with
450                            NAME (default 0.5).
451   --random-seed=VALUE      seed value for --enable/disable-random
452   --disable-valgrind-backtrace do not print a backtrace under Valgrind
453                            (only applies to --disable-optimizations builds)
454   --enable-osfuzz          Enable building fuzzer tool
455   --libfuzzer=PATH         path to libfuzzer
456   --ignore-tests=TESTS     comma-separated list (without "fate-" prefix
457                            in the name) of tests whose result is ignored
458   --enable-linux-perf      enable Linux Performance Monitor API
459
460 NOTE: Object files are built at the place where configure is launched.
461 EOF
462   exit 0
463 }
464
465 quotes='""'
466 if test -t 1 && which tput >/dev/null 2>&1; then
467     ncolors=$(tput colors)
468     if test -n "$ncolors" && test $ncolors -ge 8; then
469         bold_color=$(tput bold)
470         warn_color=$(tput setaf 3)
471         error_color=$(tput setaf 1)
472         reset_color=$(tput sgr0)
473     fi
474     # 72 used instead of 80 since that's the default of pr
475     ncols=$(tput cols)
476 fi
477 : ${ncols:=72}
478
479 log(){
480     echo "$@" >> $logfile
481 }
482
483 log_file(){
484     log BEGIN $1
485     pr -n -t $1 >> $logfile
486     log END $1
487 }
488
489 warn(){
490     log "WARNING: $*"
491     WARNINGS="${WARNINGS}WARNING: $*\n"
492 }
493
494 die(){
495     log "$@"
496     echo "$error_color$bold_color$@$reset_color"
497     cat <<EOF
498
499 If you think configure made a mistake, make sure you are using the latest
500 version from Git.  If the latest version fails, report the problem to the
501 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
502 EOF
503     if disabled logging; then
504         cat <<EOF
505 Rerun configure with logging enabled (do not use --disable-logging), and
506 include the log this produces with your report.
507 EOF
508     else
509         cat <<EOF
510 Include the log file "$logfile" produced by configure as this will help
511 solve the problem.
512 EOF
513     fi
514     exit 1
515 }
516
517 # Avoid locale weirdness, besides we really just want to translate ASCII.
518 toupper(){
519     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
520 }
521
522 tolower(){
523     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
524 }
525
526 c_escape(){
527     echo "$*" | sed 's/["\\]/\\\0/g'
528 }
529
530 sh_quote(){
531     v=$(echo "$1" | sed "s/'/'\\\\''/g")
532     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
533     echo "$v"
534 }
535
536 cleanws(){
537     echo "$@" | sed 's/^ *//;s/[[:space:]][[:space:]]*/ /g;s/ *$//'
538 }
539
540 filter(){
541     pat=$1
542     shift
543     for v; do
544         eval "case $v in $pat) printf '%s ' $v ;; esac"
545     done
546 }
547
548 filter_out(){
549     pat=$1
550     shift
551     for v; do
552         eval "case $v in $pat) ;; *) printf '%s ' $v ;; esac"
553     done
554 }
555
556 map(){
557     m=$1
558     shift
559     for v; do eval $m; done
560 }
561
562 add_suffix(){
563     suffix=$1
564     shift
565     for v; do echo ${v}${suffix}; done
566 }
567
568 set_all(){
569     value=$1
570     shift
571     for var in $*; do
572         eval $var=$value
573     done
574 }
575
576 set_weak(){
577     value=$1
578     shift
579     for var; do
580         eval : \${$var:=$value}
581     done
582 }
583
584 sanitize_var_name(){
585     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
586 }
587
588 set_safe(){
589     var=$1
590     shift
591     eval $(sanitize_var_name "$var")='$*'
592 }
593
594 get_safe(){
595     eval echo \$$(sanitize_var_name "$1")
596 }
597
598 pushvar(){
599     for pvar in $*; do
600         eval level=\${${pvar}_level:=0}
601         eval ${pvar}_${level}="\$$pvar"
602         eval ${pvar}_level=$(($level+1))
603     done
604 }
605
606 popvar(){
607     for pvar in $*; do
608         eval level=\${${pvar}_level:-0}
609         test $level = 0 && continue
610         eval level=$(($level-1))
611         eval $pvar="\${${pvar}_${level}}"
612         eval ${pvar}_level=$level
613         eval unset ${pvar}_${level}
614     done
615 }
616
617 request(){
618     for var in $*; do
619         eval ${var}_requested=yes
620         eval $var=
621     done
622 }
623
624 enable(){
625     set_all yes $*
626 }
627
628 disable(){
629     set_all no $*
630 }
631
632 enable_weak(){
633     set_weak yes $*
634 }
635
636 disable_weak(){
637     set_weak no $*
638 }
639
640 enable_safe(){
641     for var; do
642         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
643     done
644 }
645
646 disable_safe(){
647     for var; do
648         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
649     done
650 }
651
652 do_enable_deep(){
653     for var; do
654         enabled $var && continue
655         eval sel="\$${var}_select"
656         eval sgs="\$${var}_suggest"
657         pushvar var sgs
658         enable_deep $sel
659         popvar sgs
660         enable_deep_weak $sgs
661         popvar var
662     done
663 }
664
665 enable_deep(){
666     do_enable_deep $*
667     enable $*
668 }
669
670 enable_deep_weak(){
671     for var; do
672         disabled $var && continue
673         pushvar var
674         do_enable_deep $var
675         popvar var
676         enable_weak $var
677     done
678 }
679
680 requested(){
681     test "${1#!}" = "$1" && op='=' || op=!=
682     eval test "x\$${1#!}_requested" $op "xyes"
683 }
684
685 enabled(){
686     test "${1#!}" = "$1" && op='=' || op=!=
687     eval test "x\$${1#!}" $op "xyes"
688 }
689
690 disabled(){
691     test "${1#!}" = "$1" && op='=' || op=!=
692     eval test "x\$${1#!}" $op "xno"
693 }
694
695 enabled_all(){
696     for opt; do
697         enabled $opt || return 1
698     done
699 }
700
701 disabled_all(){
702     for opt; do
703         disabled $opt || return 1
704     done
705 }
706
707 enabled_any(){
708     for opt; do
709         enabled $opt && return 0
710     done
711 }
712
713 disabled_any(){
714     for opt; do
715         disabled $opt && return 0
716     done
717     return 1
718 }
719
720 set_default(){
721     for opt; do
722         eval : \${$opt:=\$${opt}_default}
723     done
724 }
725
726 is_in(){
727     value=$1
728     shift
729     for var in $*; do
730         [ $var = $value ] && return 0
731     done
732     return 1
733 }
734
735 check_deps(){
736     for cfg; do
737         enabled ${cfg}_checking && die "Circular dependency for $cfg."
738         disabled ${cfg}_checking && continue
739         enable ${cfg}_checking
740
741         eval dep_all="\$${cfg}_deps"
742         eval dep_any="\$${cfg}_deps_any"
743         eval dep_con="\$${cfg}_conflict"
744         eval dep_sel="\$${cfg}_select"
745         eval dep_sgs="\$${cfg}_suggest"
746         eval dep_ifa="\$${cfg}_if"
747         eval dep_ifn="\$${cfg}_if_any"
748
749         pushvar cfg dep_all dep_any dep_con dep_sel dep_sgs dep_ifa dep_ifn
750         check_deps $dep_all $dep_any $dep_con $dep_sel $dep_sgs $dep_ifa $dep_ifn
751         popvar cfg dep_all dep_any dep_con dep_sel dep_sgs dep_ifa dep_ifn
752
753         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
754         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
755         enabled_all  $dep_all || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but not all dependencies are satisfied: $dep_all"; }
756         enabled_any  $dep_any || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but not any dependency is satisfied: $dep_any"; }
757         disabled_all $dep_con || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but some conflicting dependencies are unsatisfied: $dep_con"; }
758         disabled_any $dep_sel && { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but some selected dependency is unsatisfied: $dep_sel"; }
759
760         enabled $cfg && enable_deep_weak $dep_sel $dep_sgs
761
762         for dep in $dep_all $dep_any $dep_sel $dep_sgs; do
763             # filter out library deps, these do not belong in extralibs
764             is_in $dep $LIBRARY_LIST && continue
765             enabled $dep && eval append ${cfg}_extralibs ${dep}_extralibs
766         done
767
768         disable ${cfg}_checking
769     done
770 }
771
772 print_config(){
773     pfx=$1
774     files=$2
775     shift 2
776     map 'eval echo "$v \${$v:-no}"' "$@" |
777     awk "BEGIN { split(\"$files\", files) }
778         {
779             c = \"$pfx\" toupper(\$1);
780             v = \$2;
781             sub(/yes/, 1, v);
782             sub(/no/,  0, v);
783             for (f in files) {
784                 file = files[f];
785                 if (file ~ /\\.h\$/) {
786                     printf(\"#define %s %d\\n\", c, v) >>file;
787                 } else if (file ~ /\\.asm\$/) {
788                     printf(\"%%define %s %d\\n\", c, v) >>file;
789                 } else if (file ~ /\\.mak\$/) {
790                     n = -v ? \"\" : \"!\";
791                     printf(\"%s%s=yes\\n\", n, c) >>file;
792                 } else if (file ~ /\\.texi\$/) {
793                     pre = -v ? \"\" : \"@c \";
794                     yesno = \$2;
795                     c2 = tolower(c);
796                     gsub(/_/, \"-\", c2);
797                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
798                 }
799             }
800         }"
801 }
802
803 print_enabled(){
804     suf=$1
805     shift
806     for v; do
807         enabled $v && printf "%s\n" ${v%$suf}
808     done
809 }
810
811 append(){
812     var=$1
813     shift
814     eval "$var=\"\$$var $*\""
815 }
816
817 prepend(){
818     var=$1
819     shift
820     eval "$var=\"$* \$$var\""
821 }
822
823 unique(){
824     var=$1
825     uniq_list=""
826     for tok in $(eval echo \$$var); do
827         uniq_list="$(filter_out $tok $uniq_list) $tok"
828     done
829     eval "$var=\"${uniq_list}\""
830 }
831
832 resolve(){
833     var=$1
834     tmpvar=
835     for entry in $(eval echo \$$var); do
836         tmpvar="$tmpvar $(eval echo \$${entry})"
837     done
838     eval "$var=\"${tmpvar}\""
839 }
840
841 add_cppflags(){
842     append CPPFLAGS "$@"
843 }
844
845 add_cflags(){
846     append CFLAGS $($cflags_filter "$@")
847 }
848
849 add_cflags_headers(){
850     append CFLAGS_HEADERS $($cflags_filter "$@")
851 }
852
853 add_cxxflags(){
854     append CXXFLAGS $($cflags_filter "$@")
855 }
856
857 add_asflags(){
858     append ASFLAGS $($asflags_filter "$@")
859 }
860
861 add_objcflags(){
862     append OBJCFLAGS $($objcflags_filter "$@")
863 }
864
865 add_ldflags(){
866     append LDFLAGS $($ldflags_filter "$@")
867 }
868
869 add_ldexeflags(){
870     append LDEXEFLAGS $($ldflags_filter "$@")
871 }
872
873 add_ldlibflags(){
874     append LDLIBFLAGS $($ldflags_filter "$@")
875 }
876
877 add_stripflags(){
878     append ASMSTRIPFLAGS "$@"
879 }
880
881 add_extralibs(){
882     prepend extralibs $($ldflags_filter "$@")
883 }
884
885 add_host_cppflags(){
886     append host_cppflags "$@"
887 }
888
889 add_host_cflags(){
890     append host_cflags $($host_cflags_filter "$@")
891 }
892
893 add_host_ldflags(){
894     append host_ldflags $($host_ldflags_filter "$@")
895 }
896
897 add_compat(){
898     append compat_objs $1
899     shift
900     map 'add_cppflags -D$v' "$@"
901 }
902
903 check_cmd(){
904     log "$@"
905     "$@" >> $logfile 2>&1
906 }
907
908 check_stat(){
909     log check_stat "$@"
910     stat "$1" >> $logfile 2>&1
911 }
912
913 cc_o(){
914     eval printf '%s\\n' $CC_O
915 }
916
917 cc_e(){
918     eval printf '%s\\n' $CC_E
919 }
920
921 check_cc(){
922     log check_cc "$@"
923     cat > $TMPC
924     log_file $TMPC
925     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
926 }
927
928 check_cxx(){
929     log check_cxx "$@"
930     cat > $TMPCPP
931     log_file $TMPCPP
932     check_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
933 }
934
935 check_objcc(){
936     log check_objcc "$@"
937     cat > $TMPM
938     log_file $TMPM
939     check_cmd $objcc -Werror=missing-prototypes $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPM
940 }
941
942 check_cpp(){
943     log check_cpp "$@"
944     cat > $TMPC
945     log_file $TMPC
946     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
947 }
948
949 as_o(){
950     eval printf '%s\\n' $AS_O
951 }
952
953 check_as(){
954     log check_as "$@"
955     cat > $TMPS
956     log_file $TMPS
957     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
958 }
959
960 check_inline_asm(){
961     log check_inline_asm "$@"
962     name="$1"
963     code="$2"
964     shift 2
965     disable $name
966     check_cc "$@" <<EOF && enable $name
967 void foo(void){ __asm__ volatile($code); }
968 EOF
969 }
970
971 check_inline_asm_flags(){
972     log check_inline_asm_flags "$@"
973     name="$1"
974     code="$2"
975     flags=''
976     shift 2
977     while [ "$1" != "" ]; do
978       append flags $1
979       shift
980     done;
981     disable $name
982     cat > $TMPC <<EOF
983 void foo(void){ __asm__ volatile($code); }
984 EOF
985     log_file $TMPC
986     check_cmd $cc $CPPFLAGS $CFLAGS $flags "$@" $CC_C $(cc_o $TMPO) $TMPC &&
987     enable $name && add_cflags $flags && add_asflags $flags && add_ldflags $flags
988 }
989
990 check_insn(){
991     log check_insn "$@"
992     check_inline_asm ${1}_inline "\"$2\""
993     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
994 }
995
996 check_x86asm(){
997     log check_x86asm "$@"
998     echo "$1" > $TMPS
999     log_file $TMPS
1000     shift 1
1001     check_cmd $x86asmexe $X86ASMFLAGS -Werror "$@" -o $TMPO $TMPS
1002 }
1003
1004 ld_o(){
1005     eval printf '%s\\n' $LD_O
1006 }
1007
1008 check_ld(){
1009     log check_ld "$@"
1010     type=$1
1011     shift 1
1012     flags=$(filter_out '-l*|*.so' $@)
1013     libs=$(filter '-l*|*.so' $@)
1014     check_$type $($cflags_filter $flags) || return
1015     flags=$($ldflags_filter $flags)
1016     libs=$($ldflags_filter $libs)
1017     check_cmd $ld $LDFLAGS $LDEXEFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
1018 }
1019
1020 print_include(){
1021     hdr=$1
1022     test "${hdr%.h}" = "${hdr}" &&
1023         echo "#include $hdr"    ||
1024         echo "#include <$hdr>"
1025 }
1026
1027 check_code(){
1028     log check_code "$@"
1029     check=$1
1030     headers=$2
1031     code=$3
1032     shift 3
1033     {
1034         for hdr in $headers; do
1035             print_include $hdr
1036         done
1037         echo "int main(void) { $code; return 0; }"
1038     } | check_$check "$@"
1039 }
1040
1041 check_cppflags(){
1042     log check_cppflags "$@"
1043     check_cpp "$@" <<EOF && append CPPFLAGS "$@"
1044 #include <stdlib.h>
1045 EOF
1046 }
1047
1048 test_cflags(){
1049     log test_cflags "$@"
1050     set -- $($cflags_filter "$@")
1051     check_cc "$@" <<EOF
1052 int x;
1053 EOF
1054 }
1055
1056 check_cflags(){
1057     log check_cflags "$@"
1058     test_cflags "$@" && add_cflags "$@"
1059 }
1060
1061 check_cxxflags(){
1062     log check_cxxflags "$@"
1063     set -- $($cflags_filter "$@")
1064     check_cxx "$@" <<EOF && append CXXFLAGS "$@"
1065 int x;
1066 EOF
1067 }
1068
1069 test_objcflags(){
1070     log test_objcflags "$@"
1071     set -- $($objcflags_filter "$@")
1072     check_objcc "$@" <<EOF
1073 int x;
1074 EOF
1075 }
1076
1077 check_objcflags(){
1078     log check_objcflags "$@"
1079     test_objcflags "$@" && add_objcflags "$@"
1080 }
1081
1082 test_ldflags(){
1083     log test_ldflags "$@"
1084     check_ld "cc" "$@" <<EOF
1085 int main(void){ return 0; }
1086 EOF
1087 }
1088
1089 check_ldflags(){
1090     log check_ldflags "$@"
1091     test_ldflags "$@" && add_ldflags "$@"
1092 }
1093
1094 test_stripflags(){
1095     log test_stripflags "$@"
1096     # call check_cc to get a fresh TMPO
1097     check_cc <<EOF
1098 int main(void) { return 0; }
1099 EOF
1100     check_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
1101 }
1102
1103 check_stripflags(){
1104     log check_stripflags "$@"
1105     test_stripflags "$@" && add_stripflags "$@"
1106 }
1107
1108 check_header(){
1109     log check_header "$@"
1110     header=$1
1111     shift
1112     disable_safe $header
1113     check_cpp "$@" <<EOF && enable_safe $header
1114 #include <$header>
1115 int x;
1116 EOF
1117 }
1118
1119 check_header_objcc(){
1120     log check_header_objcc "$@"
1121     rm -f -- "$TMPO"
1122     header=$1
1123     shift
1124     disable_safe $header
1125     {
1126        echo "#include <$header>"
1127        echo "int main(void) { return 0; }"
1128     } | check_objcc && check_stat "$TMPO" && enable_safe $header
1129 }
1130
1131 check_apple_framework(){
1132     log check_apple_framework "$@"
1133     framework="$1"
1134     name="$(tolower $framework)"
1135     header="${framework}/${framework}.h"
1136     disable $name
1137     check_header_objcc $header &&
1138         enable $name && eval ${name}_extralibs='"-framework $framework"'
1139 }
1140
1141 check_func(){
1142     log check_func "$@"
1143     func=$1
1144     shift
1145     disable $func
1146     check_ld "cc" "$@" <<EOF && enable $func
1147 extern int $func();
1148 int main(void){ $func(); }
1149 EOF
1150 }
1151
1152 check_complexfunc(){
1153     log check_complexfunc "$@"
1154     func=$1
1155     narg=$2
1156     shift 2
1157     test $narg = 2 && args="f, g" || args="f * I"
1158     disable $func
1159     check_ld "cc" "$@" <<EOF && enable $func
1160 #include <complex.h>
1161 #include <math.h>
1162 float foo(complex float f, complex float g) { return $func($args); }
1163 int main(void){ return (int) foo; }
1164 EOF
1165 }
1166
1167 check_mathfunc(){
1168     log check_mathfunc "$@"
1169     func=$1
1170     narg=$2
1171     shift 2
1172     test $narg = 2 && args="f, g" || args="f"
1173     disable $func
1174     check_ld "cc" "$@" <<EOF && enable $func
1175 #include <math.h>
1176 float foo(float f, float g) { return $func($args); }
1177 int main(void){ return (int) foo; }
1178 EOF
1179 }
1180
1181 check_func_headers(){
1182     log check_func_headers "$@"
1183     headers=$1
1184     funcs=$2
1185     shift 2
1186     {
1187         for hdr in $headers; do
1188             print_include $hdr
1189         done
1190         echo "#include <stdint.h>"
1191         for func in $funcs; do
1192             echo "long check_$func(void) { return (long) $func; }"
1193         done
1194         echo "int main(void) { int ret = 0;"
1195         # LTO could optimize out the test functions without this
1196         for func in $funcs; do
1197             echo " ret |= ((intptr_t)check_$func) & 0xFFFF;"
1198         done
1199         echo "return ret; }"
1200     } | check_ld "cc" "$@" && enable $funcs && enable_safe $headers
1201 }
1202
1203 check_class_headers_cpp(){
1204     log check_class_headers_cpp "$@"
1205     headers=$1
1206     classes=$2
1207     shift 2
1208     {
1209         for hdr in $headers; do
1210             echo "#include <$hdr>"
1211         done
1212         echo "int main(void) { "
1213         i=1
1214         for class in $classes; do
1215             echo "$class obj$i;"
1216             i=$(expr $i + 1)
1217         done
1218         echo "return 0; }"
1219     } | check_ld "cxx" "$@" && enable $funcs && enable_safe $headers
1220 }
1221
1222 check_cpp_condition(){
1223     log check_cpp_condition "$@"
1224     header=$1
1225     condition=$2
1226     shift 2
1227     check_cpp "$@" <<EOF
1228 #include <$header>
1229 #if !($condition)
1230 #error "unsatisfied condition: $condition"
1231 #endif
1232 EOF
1233 }
1234
1235 test_cflags_cc(){
1236     log test_cflags_cc "$@"
1237     flags=$1
1238     header=$2
1239     condition=$3
1240     shift 3
1241     set -- $($cflags_filter "$flags")
1242     check_cc "$@" <<EOF
1243 #include <$header>
1244 #if !($condition)
1245 #error "unsatisfied condition: $condition"
1246 #endif
1247 EOF
1248 }
1249
1250 check_lib(){
1251     log check_lib "$@"
1252     name="$1"
1253     headers="$2"
1254     funcs="$3"
1255     shift 3
1256     disable $name
1257     check_func_headers "$headers" "$funcs" "$@" &&
1258         enable $name && eval ${name}_extralibs="\$@"
1259 }
1260
1261 check_lib_cpp(){
1262     log check_lib_cpp "$@"
1263     name="$1"
1264     headers="$2"
1265     classes="$3"
1266     shift 3
1267     disable $name
1268     check_class_headers_cpp "$headers" "$classes" "$@" &&
1269         enable $name && eval ${name}_extralibs="\$@"
1270 }
1271
1272 check_pkg_config(){
1273     log check_pkg_config "$@"
1274     name="$1"
1275     pkg_version="$2"
1276     pkg="${2%% *}"
1277     headers="$3"
1278     funcs="$4"
1279     shift 4
1280     disable $name
1281     check_cmd $pkg_config --exists --print-errors $pkg_version || return
1282     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1283     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1284     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1285         enable $name &&
1286         set_safe "${name}_cflags"    $pkg_cflags &&
1287         set_safe "${name}_extralibs" $pkg_libs
1288 }
1289
1290 check_exec(){
1291     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1292 }
1293
1294 check_exec_crash(){
1295     log check_exec_crash "$@"
1296     code=$(cat)
1297
1298     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1299     # are safe but may not be available everywhere.  Thus we use
1300     # raise(SIGTERM) instead.  The check is run in a subshell so we
1301     # can redirect the "Terminated" message from the shell.  SIGBUS
1302     # is not defined by standard C so it is used conditionally.
1303
1304     (check_exec "$@") >> $logfile 2>&1 <<EOF
1305 #include <signal.h>
1306 static void sighandler(int sig){
1307     raise(SIGTERM);
1308 }
1309 int foo(void){
1310     $code
1311 }
1312 int (*func_ptr)(void) = foo;
1313 int main(void){
1314     signal(SIGILL, sighandler);
1315     signal(SIGFPE, sighandler);
1316     signal(SIGSEGV, sighandler);
1317 #ifdef SIGBUS
1318     signal(SIGBUS, sighandler);
1319 #endif
1320     return func_ptr();
1321 }
1322 EOF
1323 }
1324
1325 check_type(){
1326     log check_type "$@"
1327     headers=$1
1328     type=$2
1329     shift 2
1330     disable_safe "$type"
1331     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1332 }
1333
1334 check_struct(){
1335     log check_struct "$@"
1336     headers=$1
1337     struct=$2
1338     member=$3
1339     shift 3
1340     disable_safe "${struct}_${member}"
1341     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1342         enable_safe "${struct}_${member}"
1343 }
1344
1345 check_builtin(){
1346     log check_builtin "$@"
1347     name=$1
1348     headers=$2
1349     builtin=$3
1350     shift 3
1351     disable "$name"
1352     check_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1353 }
1354
1355 check_compile_assert(){
1356     log check_compile_assert "$@"
1357     name=$1
1358     headers=$2
1359     condition=$3
1360     shift 3
1361     disable "$name"
1362     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1363 }
1364
1365 require(){
1366     log require "$@"
1367     name_version="$1"
1368     name="${1%% *}"
1369     headers="$2"
1370     func="$3"
1371     shift 3
1372     check_lib $name "$headers" $func "$@" || die "ERROR: $name_version not found"
1373 }
1374
1375 require_cpp(){
1376     name="$1"
1377     headers="$2"
1378     classes="$3"
1379     shift 3
1380     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1381 }
1382
1383 require_header(){
1384     log require "$@"
1385     header="$1"
1386     shift
1387     check_header "$header" "$@" || die "ERROR: $header header not found"
1388 }
1389
1390 require_cpp_condition(){
1391     log require "$@"
1392     header="$1"
1393     condition="$2"
1394     shift 2
1395     check_cpp_condition "$header" "$condition" "$@" || die "ERROR: $condition not satisfied"
1396 }
1397
1398 use_pkg_config(){
1399     log use_pkg_config "$@"
1400     name="$1"
1401     check_pkg_config "$@" || return 1
1402     add_cflags    $(get_safe "${name}_cflags")
1403 }
1404
1405 require_pkg_config(){
1406     log require_pkg_config "$@"
1407     pkg_version="$2"
1408     use_pkg_config "$@" || die "ERROR: $pkg_version not found using pkg-config$pkg_config_fail_message"
1409 }
1410
1411 hostcc_e(){
1412     eval printf '%s\\n' $HOSTCC_E
1413 }
1414
1415 hostcc_o(){
1416     eval printf '%s\\n' $HOSTCC_O
1417 }
1418
1419 check_host_cc(){
1420     log check_host_cc "$@"
1421     cat > $TMPC
1422     log_file $TMPC
1423     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1424 }
1425
1426 check_host_cpp(){
1427     log check_host_cpp "$@"
1428     cat > $TMPC
1429     log_file $TMPC
1430     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1431 }
1432
1433 check_host_cppflags(){
1434     log check_host_cppflags "$@"
1435     check_host_cpp "$@" <<EOF && append host_cppflags "$@"
1436 #include <stdlib.h>
1437 EOF
1438 }
1439
1440 check_host_cflags(){
1441     log check_host_cflags "$@"
1442     set -- $($host_cflags_filter "$@")
1443     check_host_cc "$@" <<EOF && append host_cflags "$@"
1444 int x;
1445 EOF
1446 }
1447
1448 check_host_cpp_condition(){
1449     log check_host_cpp_condition "$@"
1450     header=$1
1451     condition=$2
1452     shift 2
1453     check_host_cpp "$@" <<EOF
1454 #include <$header>
1455 #if !($condition)
1456 #error "unsatisfied condition: $condition"
1457 #endif
1458 EOF
1459 }
1460
1461 cp_if_changed(){
1462     cmp -s "$1" "$2" && { test "$quiet" != "yes" && echo "$2 is unchanged"; } && return
1463     mkdir -p "$(dirname $2)"
1464     cp -f "$1" "$2"
1465 }
1466
1467 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1468 # system-dependent things.
1469
1470 AVCODEC_COMPONENTS="
1471     bsfs
1472     decoders
1473     encoders
1474     hwaccels
1475     parsers
1476 "
1477
1478 AVDEVICE_COMPONENTS="
1479     indevs
1480     outdevs
1481 "
1482
1483 AVFILTER_COMPONENTS="
1484     filters
1485 "
1486
1487 AVFORMAT_COMPONENTS="
1488     demuxers
1489     muxers
1490     protocols
1491 "
1492
1493 AVRESAMPLE_COMPONENTS=""
1494
1495 AVUTIL_COMPONENTS=""
1496
1497 COMPONENT_LIST="
1498     $AVCODEC_COMPONENTS
1499     $AVDEVICE_COMPONENTS
1500     $AVFILTER_COMPONENTS
1501     $AVFORMAT_COMPONENTS
1502     $AVRESAMPLE_COMPONENTS
1503     $AVUTIL_COMPONENTS
1504 "
1505
1506 EXAMPLE_LIST="
1507     avio_dir_cmd_example
1508     avio_reading_example
1509     decode_audio_example
1510     decode_video_example
1511     demuxing_decoding_example
1512     encode_audio_example
1513     encode_video_example
1514     extract_mvs_example
1515     filter_audio_example
1516     filtering_audio_example
1517     filtering_video_example
1518     http_multiclient_example
1519     hw_decode_example
1520     metadata_example
1521     muxing_example
1522     qsvdec_example
1523     remuxing_example
1524     resampling_audio_example
1525     scaling_video_example
1526     transcode_aac_example
1527     transcoding_example
1528 "
1529
1530 EXTERNAL_AUTODETECT_LIBRARY_LIST="
1531     alsa
1532     appkit
1533     avfoundation
1534     bzlib
1535     coreimage
1536     iconv
1537     jack
1538     libxcb
1539     libxcb_shm
1540     libxcb_shape
1541     libxcb_xfixes
1542     lzma
1543     schannel
1544     sdl2
1545     securetransport
1546     sndio
1547     xlib
1548     zlib
1549 "
1550
1551 EXTERNAL_LIBRARY_GPL_LIST="
1552     avisynth
1553     frei0r
1554     libcdio
1555     librubberband
1556     libvidstab
1557     libx264
1558     libx265
1559     libxavs
1560     libxvid
1561 "
1562
1563 EXTERNAL_LIBRARY_NONFREE_LIST="
1564     decklink
1565     libndi_newtek
1566     libfdk_aac
1567     openssl
1568 "
1569
1570 EXTERNAL_LIBRARY_VERSION3_LIST="
1571     gmp
1572     libopencore_amrnb
1573     libopencore_amrwb
1574     libvo_amrwbenc
1575     rkmpp
1576 "
1577
1578 EXTERNAL_LIBRARY_GPLV3_LIST="
1579     libsmbclient
1580 "
1581
1582 EXTERNAL_LIBRARY_LIST="
1583     $EXTERNAL_LIBRARY_GPL_LIST
1584     $EXTERNAL_LIBRARY_NONFREE_LIST
1585     $EXTERNAL_LIBRARY_VERSION3_LIST
1586     $EXTERNAL_LIBRARY_GPLV3_LIST
1587     chromaprint
1588     gcrypt
1589     gnutls
1590     jni
1591     ladspa
1592     libass
1593     libbluray
1594     libbs2b
1595     libcaca
1596     libcelt
1597     libdc1394
1598     libdrm
1599     libflite
1600     libfontconfig
1601     libfreetype
1602     libfribidi
1603     libgme
1604     libgsm
1605     libiec61883
1606     libilbc
1607     libkvazaar
1608     libmodplug
1609     libmp3lame
1610     libmysofa
1611     libopencv
1612     libopenh264
1613     libopenjpeg
1614     libopenmpt
1615     libopus
1616     libpulse
1617     librsvg
1618     librtmp
1619     libshine
1620     libsmbclient
1621     libsnappy
1622     libsoxr
1623     libspeex
1624     libssh
1625     libtesseract
1626     libtheora
1627     libtwolame
1628     libv4l2
1629     libvmaf
1630     libvorbis
1631     libvpx
1632     libwavpack
1633     libwebp
1634     libxml2
1635     libzimg
1636     libzmq
1637     libzvbi
1638     mediacodec
1639     openal
1640     opencl
1641     opengl
1642 "
1643
1644 HWACCEL_AUTODETECT_LIBRARY_LIST="
1645     audiotoolbox
1646     crystalhd
1647     cuda
1648     cuvid
1649     d3d11va
1650     dxva2
1651     nvenc
1652     vaapi
1653     vda
1654     vdpau
1655     videotoolbox
1656     v4l2_m2m
1657     xvmc
1658 "
1659
1660 # catchall list of things that require external libs to link
1661 EXTRALIBS_LIST="
1662     cpu_init
1663     cws2fws
1664 "
1665
1666 HWACCEL_LIBRARY_NONFREE_LIST="
1667     cuda_sdk
1668     libnpp
1669 "
1670
1671 HWACCEL_LIBRARY_LIST="
1672     $HWACCEL_LIBRARY_NONFREE_LIST
1673     libmfx
1674     mmal
1675     omx
1676 "
1677
1678 DOCUMENT_LIST="
1679     doc
1680     htmlpages
1681     manpages
1682     podpages
1683     txtpages
1684 "
1685
1686 FEATURE_LIST="
1687     ftrapv
1688     gray
1689     hardcoded_tables
1690     omx_rpi
1691     runtime_cpudetect
1692     safe_bitstream_reader
1693     shared
1694     small
1695     static
1696     swscale_alpha
1697 "
1698
1699 LIBRARY_LIST="
1700     avcodec
1701     avdevice
1702     avfilter
1703     avformat
1704     avresample
1705     avutil
1706     postproc
1707     swresample
1708     swscale
1709 "
1710
1711 LICENSE_LIST="
1712     gpl
1713     nonfree
1714     version3
1715 "
1716
1717 PROGRAM_LIST="
1718     ffplay
1719     ffprobe
1720     ffserver
1721     ffmpeg
1722 "
1723
1724 SUBSYSTEM_LIST="
1725     dct
1726     dwt
1727     error_resilience
1728     faan
1729     fast_unaligned
1730     fft
1731     lsp
1732     lzo
1733     mdct
1734     pixelutils
1735     network
1736     rdft
1737 "
1738
1739 # COMPONENT_LIST needs to come last to ensure correct dependency checking
1740 CONFIG_LIST="
1741     $DOCUMENT_LIST
1742     $EXAMPLE_LIST
1743     $EXTERNAL_LIBRARY_LIST
1744     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1745     $HWACCEL_LIBRARY_LIST
1746     $HWACCEL_AUTODETECT_LIBRARY_LIST
1747     $FEATURE_LIST
1748     $LICENSE_LIST
1749     $LIBRARY_LIST
1750     $PROGRAM_LIST
1751     $SUBSYSTEM_LIST
1752     autodetect
1753     fontconfig
1754     linux_perf
1755     memory_poisoning
1756     neon_clobber_test
1757     ossfuzz
1758     pic
1759     thumb
1760     valgrind_backtrace
1761     xmm_clobber_test
1762     $COMPONENT_LIST
1763 "
1764
1765 THREADS_LIST="
1766     pthreads
1767     os2threads
1768     w32threads
1769 "
1770
1771 ATOMICS_LIST="
1772     atomics_gcc
1773     atomics_suncc
1774     atomics_win32
1775 "
1776
1777 AUTODETECT_LIBS="
1778     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1779     $HWACCEL_AUTODETECT_LIBRARY_LIST
1780     $THREADS_LIST
1781 "
1782
1783 ARCH_LIST="
1784     aarch64
1785     alpha
1786     arm
1787     avr32
1788     avr32_ap
1789     avr32_uc
1790     bfin
1791     ia64
1792     m68k
1793     mips
1794     mips64
1795     parisc
1796     ppc
1797     ppc64
1798     s390
1799     sh4
1800     sparc
1801     sparc64
1802     tilegx
1803     tilepro
1804     tomi
1805     x86
1806     x86_32
1807     x86_64
1808 "
1809
1810 ARCH_EXT_LIST_ARM="
1811     armv5te
1812     armv6
1813     armv6t2
1814     armv8
1815     neon
1816     vfp
1817     vfpv3
1818     setend
1819 "
1820
1821 ARCH_EXT_LIST_MIPS="
1822     mipsfpu
1823     mips32r2
1824     mips32r5
1825     mips64r2
1826     mips32r6
1827     mips64r6
1828     mipsdsp
1829     mipsdspr2
1830     msa
1831 "
1832
1833 ARCH_EXT_LIST_LOONGSON="
1834     loongson2
1835     loongson3
1836     mmi
1837 "
1838
1839 ARCH_EXT_LIST_X86_SIMD="
1840     aesni
1841     amd3dnow
1842     amd3dnowext
1843     avx
1844     avx2
1845     fma3
1846     fma4
1847     mmx
1848     mmxext
1849     sse
1850     sse2
1851     sse3
1852     sse4
1853     sse42
1854     ssse3
1855     xop
1856 "
1857
1858 ARCH_EXT_LIST_PPC="
1859     altivec
1860     dcbzl
1861     ldbrx
1862     power8
1863     ppc4xx
1864     vsx
1865 "
1866
1867 ARCH_EXT_LIST_X86="
1868     $ARCH_EXT_LIST_X86_SIMD
1869     cpunop
1870     i686
1871 "
1872
1873 ARCH_EXT_LIST="
1874     $ARCH_EXT_LIST_ARM
1875     $ARCH_EXT_LIST_PPC
1876     $ARCH_EXT_LIST_X86
1877     $ARCH_EXT_LIST_MIPS
1878     $ARCH_EXT_LIST_LOONGSON
1879 "
1880
1881 ARCH_FEATURES="
1882     aligned_stack
1883     fast_64bit
1884     fast_clz
1885     fast_cmov
1886     local_aligned_8
1887     local_aligned_16
1888     local_aligned_32
1889     simd_align_16
1890     simd_align_32
1891 "
1892
1893 BUILTIN_LIST="
1894     atomic_cas_ptr
1895     machine_rw_barrier
1896     MemoryBarrier
1897     mm_empty
1898     rdtsc
1899     sarestart
1900     sem_timedwait
1901     sync_val_compare_and_swap
1902 "
1903 HAVE_LIST_CMDLINE="
1904     inline_asm
1905     symver
1906     x86asm
1907 "
1908
1909 HAVE_LIST_PUB="
1910     bigendian
1911     fast_unaligned
1912 "
1913
1914 HEADERS_LIST="
1915     altivec_h
1916     arpa_inet_h
1917     asm_types_h
1918     cdio_paranoia_h
1919     cdio_paranoia_paranoia_h
1920     cuda_h
1921     d3d11_h
1922     dispatch_dispatch_h
1923     dev_bktr_ioctl_bt848_h
1924     dev_bktr_ioctl_meteor_h
1925     dev_ic_bt8xx_h
1926     dev_video_bktr_ioctl_bt848_h
1927     dev_video_meteor_ioctl_meteor_h
1928     direct_h
1929     dirent_h
1930     dlfcn_h
1931     dxgidebug_h
1932     dxva_h
1933     ES2_gl_h
1934     gsm_h
1935     io_h
1936     mach_mach_time_h
1937     machine_ioctl_bt848_h
1938     machine_ioctl_meteor_h
1939     malloc_h
1940     opencv2_core_core_c_h
1941     openjpeg_2_3_openjpeg_h
1942     openjpeg_2_2_openjpeg_h
1943     openjpeg_2_1_openjpeg_h
1944     openjpeg_2_0_openjpeg_h
1945     openjpeg_1_5_openjpeg_h
1946     OpenGL_gl3_h
1947     poll_h
1948     soundcard_h
1949     stdatomic_h
1950     sys_mman_h
1951     sys_param_h
1952     sys_resource_h
1953     sys_select_h
1954     sys_soundcard_h
1955     sys_time_h
1956     sys_un_h
1957     sys_videoio_h
1958     termios_h
1959     udplite_h
1960     unistd_h
1961     valgrind_valgrind_h
1962     windows_h
1963     winsock2_h
1964 "
1965
1966 INTRINSICS_LIST="
1967     intrinsics_neon
1968 "
1969
1970 COMPLEX_FUNCS="
1971     cabs
1972     cexp
1973 "
1974
1975 MATH_FUNCS="
1976     atanf
1977     atan2f
1978     cbrt
1979     cbrtf
1980     copysign
1981     cosf
1982     erf
1983     exp2
1984     exp2f
1985     expf
1986     hypot
1987     isfinite
1988     isinf
1989     isnan
1990     ldexpf
1991     llrint
1992     llrintf
1993     log2
1994     log2f
1995     log10f
1996     lrint
1997     lrintf
1998     powf
1999     rint
2000     round
2001     roundf
2002     sinf
2003     trunc
2004     truncf
2005 "
2006
2007 SYSTEM_FUNCS="
2008     access
2009     aligned_malloc
2010     arc4random
2011     clock_gettime
2012     closesocket
2013     CommandLineToArgvW
2014     CoTaskMemFree
2015     CryptGenRandom
2016     fcntl
2017     flt_lim
2018     fork
2019     getaddrinfo
2020     gethrtime
2021     getopt
2022     GetProcessAffinityMask
2023     GetProcessMemoryInfo
2024     GetProcessTimes
2025     getrusage
2026     GetSystemTimeAsFileTime
2027     gettimeofday
2028     glob
2029     glXGetProcAddress
2030     gmtime_r
2031     inet_aton
2032     isatty
2033     jack_port_get_latency_range
2034     kbhit
2035     LoadLibrary
2036     localtime_r
2037     lstat
2038     lzo1x_999_compress
2039     mach_absolute_time
2040     MapViewOfFile
2041     memalign
2042     mkstemp
2043     mmap
2044     mprotect
2045     nanosleep
2046     PeekNamedPipe
2047     posix_memalign
2048     pthread_cancel
2049     sched_getaffinity
2050     SetConsoleTextAttribute
2051     SetConsoleCtrlHandler
2052     setmode
2053     setrlimit
2054     Sleep
2055     strerror_r
2056     sysconf
2057     sysctl
2058     usleep
2059     UTGetOSTypeFromString
2060     VirtualAlloc
2061     wglGetProcAddress
2062 "
2063
2064 TOOLCHAIN_FEATURES="
2065     as_dn_directive
2066     as_fpu_directive
2067     as_func
2068     as_object_arch
2069     asm_mod_q
2070     attribute_may_alias
2071     attribute_packed
2072     blocks_extension
2073     ebp_available
2074     ebx_available
2075     gnu_as
2076     gnu_windres
2077     ibm_asm
2078     inline_asm_direct_symbol_refs
2079     inline_asm_labels
2080     inline_asm_nonlocal_labels
2081     pragma_deprecated
2082     rsync_contimeout
2083     symver_asm_label
2084     symver_gnu_asm
2085     vfp_args
2086     xform_asm
2087     xmm_clobbers
2088 "
2089
2090 TYPES_LIST="
2091     CONDITION_VARIABLE_Ptr
2092     kCMVideoCodecType_HEVC
2093     socklen_t
2094     struct_addrinfo
2095     struct_group_source_req
2096     struct_ip_mreq_source
2097     struct_ipv6_mreq
2098     struct_msghdr_msg_flags
2099     struct_pollfd
2100     struct_rusage_ru_maxrss
2101     struct_sctp_event_subscribe
2102     struct_sockaddr_in6
2103     struct_sockaddr_sa_len
2104     struct_sockaddr_storage
2105     struct_stat_st_mtim_tv_nsec
2106     struct_v4l2_frmivalenum_discrete
2107 "
2108
2109 HAVE_LIST="
2110     $ARCH_EXT_LIST
2111     $(add_suffix _external $ARCH_EXT_LIST)
2112     $(add_suffix _inline   $ARCH_EXT_LIST)
2113     $ARCH_FEATURES
2114     $ATOMICS_LIST
2115     $BUILTIN_LIST
2116     $COMPLEX_FUNCS
2117     $HAVE_LIST_CMDLINE
2118     $HAVE_LIST_PUB
2119     $HEADERS_LIST
2120     $INTRINSICS_LIST
2121     $MATH_FUNCS
2122     $SYSTEM_FUNCS
2123     $THREADS_LIST
2124     $TOOLCHAIN_FEATURES
2125     $TYPES_LIST
2126     atomics_native
2127     dos_paths
2128     libc_msvcrt
2129     makeinfo
2130     makeinfo_html
2131     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
2132     perl
2133     pod2man
2134     section_data_rel_ro
2135     texi2html
2136     threads
2137     uwp
2138     vaapi_drm
2139     vaapi_x11
2140     vdpau_x11
2141     winrt
2142 "
2143
2144 # options emitted with CONFIG_ prefix but not available on the command line
2145 CONFIG_EXTRA="
2146     aandcttables
2147     ac3dsp
2148     audio_frame_queue
2149     audiodsp
2150     blockdsp
2151     bswapdsp
2152     cabac
2153     cbs
2154     cbs_h264
2155     dirac_parse
2156     dvprofile
2157     exif
2158     faandct
2159     faanidct
2160     fdctdsp
2161     flacdsp
2162     fmtconvert
2163     frame_thread_encoder
2164     g722dsp
2165     golomb
2166     gplv3
2167     h263dsp
2168     h264chroma
2169     h264dsp
2170     h264parse
2171     h264pred
2172     h264qpel
2173     hevcparse
2174     hpeldsp
2175     huffman
2176     huffyuvdsp
2177     huffyuvencdsp
2178     idctdsp
2179     iirfilter
2180     mdct15
2181     intrax8
2182     iso_media
2183     ividsp
2184     jpegtables
2185     lgplv3
2186     libx262
2187     llauddsp
2188     llviddsp
2189     llvidencdsp
2190     lpc
2191     lzf
2192     me_cmp
2193     mpeg_er
2194     mpegaudio
2195     mpegaudiodsp
2196     mpegaudioheader
2197     mpegvideo
2198     mpegvideoenc
2199     mss34dsp
2200     pixblockdsp
2201     qpeldsp
2202     qsv
2203     qsvdec
2204     qsvenc
2205     rangecoder
2206     riffdec
2207     riffenc
2208     rtpdec
2209     rtpenc_chain
2210     rv34dsp
2211     sinewin
2212     snappy
2213     srtp
2214     startcode
2215     texturedsp
2216     texturedspenc
2217     tpeldsp
2218     vaapi_1
2219     vaapi_encode
2220     vc1dsp
2221     videodsp
2222     vp3dsp
2223     vp56dsp
2224     vp8dsp
2225     wma_freqs
2226     wmv2dsp
2227 "
2228
2229 CMDLINE_SELECT="
2230     $ARCH_EXT_LIST
2231     $CONFIG_LIST
2232     $HAVE_LIST_CMDLINE
2233     $THREADS_LIST
2234     asm
2235     cross_compile
2236     debug
2237     extra_warnings
2238     logging
2239     lto
2240     optimizations
2241     rpath
2242     stripping
2243 "
2244
2245 PATHS_LIST="
2246     bindir
2247     datadir
2248     docdir
2249     incdir
2250     libdir
2251     mandir
2252     pkgconfigdir
2253     prefix
2254     shlibdir
2255     install_name_dir
2256 "
2257
2258 CMDLINE_SET="
2259     $PATHS_LIST
2260     ar
2261     arch
2262     as
2263     assert_level
2264     build_suffix
2265     cc
2266     objcc
2267     cpu
2268     cross_prefix
2269     custom_allocator
2270     cxx
2271     dep_cc
2272     doxygen
2273     env
2274     extra_version
2275     gas
2276     host_cc
2277     host_cflags
2278     host_extralibs
2279     host_ld
2280     host_ldflags
2281     host_os
2282     ignore_tests
2283     install
2284     ld
2285     ln_s
2286     logfile
2287     malloc_prefix
2288     nm
2289     optflags
2290     nvccflags
2291     pkg_config
2292     pkg_config_flags
2293     progs_suffix
2294     random_seed
2295     ranlib
2296     samples
2297     strip
2298     sws_max_filter_size
2299     sysinclude
2300     sysroot
2301     target_exec
2302     target_os
2303     target_path
2304     target_samples
2305     tempprefix
2306     toolchain
2307     valgrind
2308     x86asmexe
2309 "
2310
2311 CMDLINE_APPEND="
2312     extra_cflags
2313     extra_cxxflags
2314     extra_objcflags
2315     host_cppflags
2316 "
2317
2318 # code dependency declarations
2319
2320 # architecture extensions
2321
2322 armv5te_deps="arm"
2323 armv6_deps="arm"
2324 armv6t2_deps="arm"
2325 armv8_deps="aarch64"
2326 neon_deps_any="aarch64 arm"
2327 intrinsics_neon_deps="neon"
2328 vfp_deps_any="aarch64 arm"
2329 vfpv3_deps="vfp"
2330 setend_deps="arm"
2331
2332 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2333
2334 loongson2_deps="mips"
2335 loongson3_deps="mips"
2336 mipsfpu_deps="mips"
2337 mipsdsp_deps="mips"
2338 mipsdspr2_deps="mips"
2339 mips32r2_deps="mips"
2340 mips32r5_deps="mips"
2341 mips32r6_deps="mips"
2342 mips64r2_deps="mips"
2343 mips64r6_deps="mips"
2344 msa_deps="mipsfpu"
2345 mmi_deps="mips"
2346
2347 altivec_deps="ppc"
2348 dcbzl_deps="ppc"
2349 ldbrx_deps="ppc"
2350 ppc4xx_deps="ppc"
2351 vsx_deps="altivec"
2352 power8_deps="vsx"
2353
2354 cpunop_deps="i686"
2355 x86_64_select="i686"
2356 x86_64_suggest="fast_cmov"
2357
2358 amd3dnow_deps="mmx"
2359 amd3dnowext_deps="amd3dnow"
2360 i686_deps="x86"
2361 mmx_deps="x86"
2362 mmxext_deps="mmx"
2363 sse_deps="mmxext"
2364 sse2_deps="sse"
2365 sse3_deps="sse2"
2366 ssse3_deps="sse3"
2367 sse4_deps="ssse3"
2368 sse42_deps="sse4"
2369 aesni_deps="sse42"
2370 avx_deps="sse42"
2371 xop_deps="avx"
2372 fma3_deps="avx"
2373 fma4_deps="avx"
2374 avx2_deps="avx"
2375
2376 mmx_external_deps="x86asm"
2377 mmx_inline_deps="inline_asm"
2378 mmx_suggest="mmx_external mmx_inline"
2379
2380 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2381     eval dep=\$${ext}_deps
2382     eval ${ext}_external_deps='"${dep}_external"'
2383     eval ${ext}_inline_deps='"${dep}_inline"'
2384     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2385 done
2386
2387 aligned_stack_if_any="aarch64 ppc x86"
2388 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2389 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2390 fast_unaligned_if_any="aarch64 ppc x86"
2391 simd_align_16_if_any="altivec neon sse"
2392 simd_align_32_if_any="avx"
2393
2394 # system capabilities
2395 symver_if_any="symver_asm_label symver_gnu_asm"
2396 valgrind_backtrace_conflict="optimizations"
2397 valgrind_backtrace_deps="valgrind_valgrind_h"
2398
2399 # threading support
2400 atomics_gcc_if="sync_val_compare_and_swap"
2401 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2402 atomics_win32_if="MemoryBarrier"
2403 atomics_native_if_any="$ATOMICS_LIST"
2404 w32threads_deps="atomics_native"
2405 threads_if_any="$THREADS_LIST"
2406
2407 # subsystems
2408 cbs_h264_select="cbs golomb"
2409 dct_select="rdft"
2410 dirac_parse_select="golomb"
2411 error_resilience_select="me_cmp"
2412 faandct_deps="faan fdctdsp"
2413 faanidct_deps="faan idctdsp"
2414 h264dsp_select="startcode"
2415 hevcparse_select="golomb"
2416 frame_thread_encoder_deps="encoders threads"
2417 intrax8_select="blockdsp idctdsp"
2418 mdct_select="fft"
2419 mdct15_select="fft"
2420 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2421 mpeg_er_select="error_resilience"
2422 mpegaudio_select="mpegaudiodsp mpegaudioheader"
2423 mpegaudiodsp_select="dct"
2424 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2425 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
2426 vc1dsp_select="h264chroma qpeldsp startcode"
2427 rdft_select="fft"
2428
2429 # decoders / encoders
2430 aac_decoder_select="mdct15 mdct sinewin"
2431 aac_fixed_decoder_select="mdct sinewin"
2432 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2433 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2434 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2435 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2436 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2437 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2438 adpcm_g722_decoder_select="g722dsp"
2439 adpcm_g722_encoder_select="g722dsp"
2440 aic_decoder_select="golomb idctdsp"
2441 alac_encoder_select="lpc"
2442 als_decoder_select="bswapdsp"
2443 amrnb_decoder_select="lsp"
2444 amrwb_decoder_select="lsp"
2445 amv_decoder_select="sp5x_decoder exif"
2446 amv_encoder_select="aandcttables jpegtables mpegvideoenc"
2447 ape_decoder_select="bswapdsp llauddsp"
2448 apng_decoder_select="zlib"
2449 apng_encoder_select="llvidencdsp zlib"
2450 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2451 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2452 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2453 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2454 atrac1_decoder_select="mdct sinewin"
2455 atrac3_decoder_select="mdct"
2456 atrac3p_decoder_select="mdct sinewin"
2457 avrn_decoder_select="exif jpegtables"
2458 bink_decoder_select="blockdsp hpeldsp"
2459 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2460 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2461 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2462 clearvideo_decoder_select="idctdsp"
2463 cllc_decoder_select="bswapdsp"
2464 comfortnoise_encoder_select="lpc"
2465 cook_decoder_select="audiodsp mdct sinewin"
2466 cscd_decoder_select="lzo"
2467 cscd_decoder_suggest="zlib"
2468 dca_decoder_select="mdct"
2469 dds_decoder_select="texturedsp"
2470 dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
2471 dnxhd_decoder_select="blockdsp idctdsp"
2472 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2473 dolby_e_decoder_select="mdct"
2474 dvvideo_decoder_select="dvprofile idctdsp"
2475 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2476 dxa_decoder_select="zlib"
2477 dxv_decoder_select="lzf texturedsp"
2478 eac3_decoder_select="ac3_decoder"
2479 eac3_encoder_select="ac3_encoder"
2480 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2481 eatgq_decoder_select="aandcttables"
2482 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2483 exr_decoder_select="zlib"
2484 ffv1_decoder_select="rangecoder"
2485 ffv1_encoder_select="rangecoder"
2486 ffvhuff_decoder_select="huffyuv_decoder"
2487 ffvhuff_encoder_select="huffyuv_encoder"
2488 fic_decoder_select="golomb"
2489 flac_decoder_select="flacdsp"
2490 flac_encoder_select="bswapdsp flacdsp lpc"
2491 flashsv2_decoder_select="zlib"
2492 flashsv2_encoder_select="zlib"
2493 flashsv_decoder_select="zlib"
2494 flashsv_encoder_select="zlib"
2495 flv_decoder_select="h263_decoder"
2496 flv_encoder_select="h263_encoder"
2497 fourxm_decoder_select="blockdsp bswapdsp"
2498 fraps_decoder_select="bswapdsp huffman"
2499 g2m_decoder_select="blockdsp idctdsp jpegtables zlib"
2500 g729_decoder_select="audiodsp"
2501 h261_decoder_select="mpegvideo"
2502 h261_encoder_select="aandcttables mpegvideoenc"
2503 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2504 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2505 h263i_decoder_select="h263_decoder"
2506 h263p_decoder_select="h263_decoder"
2507 h263p_encoder_select="h263_encoder"
2508 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
2509 h264_decoder_suggest="error_resilience"
2510 hap_decoder_select="snappy texturedsp"
2511 hap_encoder_deps="libsnappy"
2512 hap_encoder_select="texturedspenc"
2513 hevc_decoder_select="bswapdsp cabac golomb hevcparse videodsp"
2514 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2515 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llvidencdsp"
2516 iac_decoder_select="imc_decoder"
2517 imc_decoder_select="bswapdsp fft mdct sinewin"
2518 indeo3_decoder_select="hpeldsp"
2519 indeo4_decoder_select="ividsp"
2520 indeo5_decoder_select="ividsp"
2521 interplay_video_decoder_select="hpeldsp"
2522 jpegls_decoder_select="mjpeg_decoder"
2523 jv_decoder_select="blockdsp"
2524 lagarith_decoder_select="llviddsp"
2525 ljpeg_encoder_select="aandcttables idctdsp jpegtables mpegvideoenc"
2526 magicyuv_decoder_select="llviddsp"
2527 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2528 metasound_decoder_select="lsp mdct sinewin"
2529 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2530 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2531 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2532 mjpegb_decoder_select="mjpeg_decoder"
2533 mlp_decoder_select="mlp_parser"
2534 mlp_encoder_select="lpc"
2535 motionpixels_decoder_select="bswapdsp"
2536 mp1_decoder_select="mpegaudio"
2537 mp1float_decoder_select="mpegaudio"
2538 mp2_decoder_select="mpegaudio"
2539 mp2float_decoder_select="mpegaudio"
2540 mp3_decoder_select="mpegaudio"
2541 mp3adu_decoder_select="mpegaudio"
2542 mp3adufloat_decoder_select="mpegaudio"
2543 mp3float_decoder_select="mpegaudio"
2544 mp3on4_decoder_select="mpegaudio"
2545 mp3on4float_decoder_select="mpegaudio"
2546 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2547 mpc8_decoder_select="mpegaudiodsp"
2548 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
2549 mpeg_xvmc_decoder_select="mpeg2video_decoder"
2550 mpegvideo_decoder_select="mpegvideo"
2551 mpeg1video_decoder_select="mpegvideo"
2552 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2553 mpeg2video_decoder_select="mpegvideo"
2554 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2555 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2556 mpeg4_encoder_select="h263_encoder"
2557 msa1_decoder_select="mss34dsp"
2558 mscc_decoder_select="zlib"
2559 msmpeg4v1_decoder_select="h263_decoder"
2560 msmpeg4v2_decoder_select="h263_decoder"
2561 msmpeg4v2_encoder_select="h263_encoder"
2562 msmpeg4v3_decoder_select="h263_decoder"
2563 msmpeg4v3_encoder_select="h263_encoder"
2564 mss2_decoder_select="mpegvideo qpeldsp vc1_decoder"
2565 mts2_decoder_select="mss34dsp"
2566 mxpeg_decoder_select="mjpeg_decoder"
2567 nellymoser_decoder_select="mdct sinewin"
2568 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2569 nuv_decoder_select="idctdsp lzo"
2570 on2avc_decoder_select="mdct"
2571 opus_decoder_deps="swresample"
2572 opus_decoder_select="mdct15"
2573 opus_encoder_select="audio_frame_queue mdct15"
2574 png_decoder_select="zlib"
2575 png_encoder_select="llvidencdsp zlib"
2576 prores_decoder_select="blockdsp idctdsp"
2577 prores_encoder_select="fdctdsp"
2578 qcelp_decoder_select="lsp"
2579 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2580 ra_144_decoder_select="audiodsp"
2581 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2582 ralf_decoder_select="golomb"
2583 rawvideo_decoder_select="bswapdsp"
2584 rscc_decoder_select="zlib"
2585 rtjpeg_decoder_select="me_cmp"
2586 rv10_decoder_select="h263_decoder"
2587 rv10_encoder_select="h263_encoder"
2588 rv20_decoder_select="h263_decoder"
2589 rv20_encoder_select="h263_encoder"
2590 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2591 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2592 screenpresso_decoder_select="zlib"
2593 shorten_decoder_select="bswapdsp"
2594 sipr_decoder_select="lsp"
2595 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2596 snow_encoder_select="aandcttables dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2597 sonic_decoder_select="golomb rangecoder"
2598 sonic_encoder_select="golomb rangecoder"
2599 sonic_ls_encoder_select="golomb rangecoder"
2600 sp5x_decoder_select="mjpeg_decoder"
2601 srgc_decoder_select="zlib"
2602 svq1_decoder_select="hpeldsp"
2603 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2604 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2605 svq3_decoder_suggest="zlib"
2606 tak_decoder_select="audiodsp"
2607 tdsc_decoder_select="zlib mjpeg_decoder"
2608 theora_decoder_select="vp3_decoder"
2609 thp_decoder_select="mjpeg_decoder"
2610 tiff_decoder_suggest="zlib lzma"
2611 tiff_encoder_suggest="zlib"
2612 truehd_decoder_select="mlp_parser"
2613 truehd_encoder_select="lpc"
2614 truemotion2_decoder_select="bswapdsp"
2615 truespeech_decoder_select="bswapdsp"
2616 tscc_decoder_select="zlib"
2617 twinvq_decoder_select="mdct lsp sinewin"
2618 txd_decoder_select="texturedsp"
2619 utvideo_decoder_select="bswapdsp llviddsp"
2620 utvideo_encoder_select="bswapdsp huffman llvidencdsp"
2621 vble_decoder_select="llviddsp"
2622 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 mpegvideo vc1dsp"
2623 vc1_qsv_decoder_deps="libmfx"
2624 vc1_qsv_decoder_select="qsvdec vc1_qsv_hwaccel vc1_parser"
2625 vc1image_decoder_select="vc1_decoder"
2626 vorbis_decoder_select="mdct"
2627 vorbis_encoder_select="mdct"
2628 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2629 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2630 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2631 vp6a_decoder_select="vp6_decoder"
2632 vp6f_decoder_select="vp6_decoder"
2633 vp7_decoder_select="h264pred videodsp vp8dsp"
2634 vp8_decoder_select="h264pred videodsp vp8dsp"
2635 vp9_decoder_select="videodsp vp9_parser"
2636 webp_decoder_select="vp8_decoder exif"
2637 wmalossless_decoder_select="llauddsp"
2638 wmapro_decoder_select="mdct sinewin wma_freqs"
2639 wmav1_decoder_select="mdct sinewin wma_freqs"
2640 wmav1_encoder_select="mdct sinewin wma_freqs"
2641 wmav2_decoder_select="mdct sinewin wma_freqs"
2642 wmav2_encoder_select="mdct sinewin wma_freqs"
2643 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2644 wmv1_decoder_select="h263_decoder"
2645 wmv1_encoder_select="h263_encoder"
2646 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2647 wmv2_encoder_select="h263_encoder wmv2dsp"
2648 wmv3_decoder_select="vc1_decoder"
2649 wmv3image_decoder_select="wmv3_decoder"
2650 xma1_decoder_select="wmapro_decoder"
2651 xma2_decoder_select="wmapro_decoder"
2652 zerocodec_decoder_select="zlib"
2653 zlib_decoder_select="zlib"
2654 zlib_encoder_select="zlib"
2655 zmbv_decoder_select="zlib"
2656 zmbv_encoder_select="zlib"
2657
2658 # hardware accelerators
2659 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2660 cuda_deps_any="libdl LoadLibrary"
2661 cuvid_deps="cuda"
2662 d3d11va_deps="d3d11_h dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2663 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode ole32 user32"
2664 vda_framework_deps="VideoDecodeAcceleration_VDADecoder_h blocks_extension"
2665 vda_framework_extralibs="-framework VideoDecodeAcceleration"
2666 vda_deps="vda_framework pthreads corefoundation"
2667 vda_extralibs="-framework QuartzCore"
2668 videotoolbox_hwaccel_deps="videotoolbox pthreads"
2669 videotoolbox_hwaccel_extralibs="-framework QuartzCore"
2670 xvmc_deps="X11_extensions_XvMClib_h"
2671
2672 h263_vaapi_hwaccel_deps="vaapi"
2673 h263_vaapi_hwaccel_select="h263_decoder"
2674 h263_videotoolbox_hwaccel_deps="videotoolbox"
2675 h263_videotoolbox_hwaccel_select="h263_decoder"
2676 h264_cuvid_hwaccel_deps="cuda cuvid"
2677 h264_cuvid_hwaccel_select="h264_cuvid_decoder"
2678 h264_d3d11va_hwaccel_deps="d3d11va"
2679 h264_d3d11va_hwaccel_select="h264_decoder"
2680 h264_d3d11va2_hwaccel_deps="d3d11va"
2681 h264_d3d11va2_hwaccel_select="h264_decoder"
2682 h264_dxva2_hwaccel_deps="dxva2"
2683 h264_dxva2_hwaccel_select="h264_decoder"
2684 h264_mediacodec_hwaccel_deps="mediacodec"
2685 h264_mmal_hwaccel_deps="mmal"
2686 h264_qsv_hwaccel_deps="libmfx"
2687 h264_vaapi_hwaccel_deps="vaapi"
2688 h264_vaapi_hwaccel_select="h264_decoder"
2689 h264_vda_hwaccel_deps="vda"
2690 h264_vda_hwaccel_select="h264_decoder"
2691 h264_vda_old_hwaccel_deps="vda"
2692 h264_vda_old_hwaccel_select="h264_decoder"
2693 h264_vdpau_hwaccel_deps="vdpau"
2694 h264_vdpau_hwaccel_select="h264_decoder"
2695 h264_videotoolbox_hwaccel_deps="videotoolbox"
2696 h264_videotoolbox_hwaccel_select="h264_decoder"
2697 hevc_cuvid_hwaccel_deps="cuda cuvid"
2698 hevc_cuvid_hwaccel_select="hevc_cuvid_decoder"
2699 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2700 hevc_d3d11va_hwaccel_select="hevc_decoder"
2701 hevc_mediacodec_hwaccel_deps="mediacodec"
2702 hevc_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2703 hevc_d3d11va2_hwaccel_select="hevc_decoder"
2704 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2705 hevc_dxva2_hwaccel_select="hevc_decoder"
2706 hevc_qsv_hwaccel_deps="libmfx"
2707 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2708 hevc_vaapi_hwaccel_select="hevc_decoder"
2709 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2710 hevc_vdpau_hwaccel_select="hevc_decoder"
2711 hevc_videotoolbox_hwaccel_deps="videotoolbox"
2712 hevc_videotoolbox_hwaccel_select="hevc_decoder"
2713 mjpeg_cuvid_hwaccel_deps="cuda cuvid"
2714 mjpeg_cuvid_hwaccel_select="mjpeg_cuvid_decoder"
2715 mpeg_xvmc_hwaccel_deps="xvmc"
2716 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2717 mpeg1_cuvid_hwaccel_deps="cuda cuvid"
2718 mpeg1_cuvid_hwaccel_select="mpeg1_cuvid_decoder"
2719 mpeg1_vdpau_hwaccel_deps="vdpau"
2720 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2721 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2722 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2723 mpeg1_xvmc_hwaccel_deps="xvmc"
2724 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2725 mpeg2_cuvid_hwaccel_deps="cuda cuvid"
2726 mpeg2_cuvid_hwaccel_select="mpeg2_cuvid_decoder"
2727 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2728 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2729 mpeg2_d3d11va2_hwaccel_deps="d3d11va"
2730 mpeg2_d3d11va2_hwaccel_select="mpeg2video_decoder"
2731 mpeg2_dxva2_hwaccel_deps="dxva2"
2732 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2733 mpeg2_mediacodec_hwaccel_deps="mediacodec"
2734 mpeg2_mmal_hwaccel_deps="mmal"
2735 mpeg2_qsv_hwaccel_deps="libmfx"
2736 mpeg2_qsv_hwaccel_select="qsvdec_mpeg2"
2737 mpeg2_vaapi_hwaccel_deps="vaapi"
2738 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2739 mpeg2_vdpau_hwaccel_deps="vdpau"
2740 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2741 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2742 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2743 mpeg2_xvmc_hwaccel_deps="xvmc"
2744 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2745 mpeg4_cuvid_hwaccel_deps="cuda cuvid"
2746 mpeg4_cuvid_hwaccel_select="mpeg4_cuvid_decoder"
2747 mpeg4_mediacodec_hwaccel_deps="mediacodec"
2748 mpeg4_mmal_hwaccel_deps="mmal"
2749 mpeg4_vaapi_hwaccel_deps="vaapi"
2750 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2751 mpeg4_vdpau_hwaccel_deps="vdpau"
2752 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2753 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2754 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2755 vc1_cuvid_hwaccel_deps="cuda cuvid"
2756 vc1_cuvid_hwaccel_select="vc1_cuvid_decoder"
2757 vc1_d3d11va_hwaccel_deps="d3d11va"
2758 vc1_d3d11va_hwaccel_select="vc1_decoder"
2759 vc1_d3d11va2_hwaccel_deps="d3d11va"
2760 vc1_d3d11va2_hwaccel_select="vc1_decoder"
2761 vc1_dxva2_hwaccel_deps="dxva2"
2762 vc1_dxva2_hwaccel_select="vc1_decoder"
2763 vc1_mmal_hwaccel_deps="mmal"
2764 vc1_qsv_hwaccel_deps="libmfx"
2765 vc1_qsv_hwaccel_select="qsvdec_vc1"
2766 vc1_vaapi_hwaccel_deps="vaapi"
2767 vc1_vaapi_hwaccel_select="vc1_decoder"
2768 vc1_vdpau_hwaccel_deps="vdpau"
2769 vc1_vdpau_hwaccel_select="vc1_decoder"
2770 vp8_cuvid_hwaccel_deps="cuda cuvid"
2771 vp8_cuvid_hwaccel_select="vp8_cuvid_decoder"
2772 vp9_cuvid_hwaccel_deps="cuda cuvid"
2773 vp9_cuvid_hwaccel_select="vp9_cuvid_decoder"
2774 vp8_mediacodec_hwaccel_deps="mediacodec"
2775 vp8_qsv_hwaccel_deps="libmfx"
2776 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2777 vp9_d3d11va_hwaccel_select="vp9_decoder"
2778 vp9_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2779 vp9_d3d11va2_hwaccel_select="vp9_decoder"
2780 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
2781 vp9_dxva2_hwaccel_select="vp9_decoder"
2782 vp9_mediacodec_hwaccel_deps="mediacodec"
2783 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9_bit_depth"
2784 vp9_vaapi_hwaccel_select="vp9_decoder"
2785 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2786 wmv3_d3d11va2_hwaccel_select="vc1_d3d11va2_hwaccel"
2787 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2788 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2789 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2790
2791 # hardware-accelerated codecs
2792 omx_deps="libdl pthreads"
2793 omx_rpi_select="omx"
2794 qsvdec_select="qsv"
2795 qsvenc_select="qsv"
2796 vaapi_encode_deps="vaapi"
2797 v4l2_m2m_deps_any="linux_videodev2_h"
2798
2799 hwupload_cuda_filter_deps="cuda"
2800 scale_npp_filter_deps="cuda libnpp"
2801 scale_cuda_filter_deps="cuda_sdk"
2802 thumbnail_cuda_filter_deps="cuda_sdk"
2803
2804 nvenc_deps="cuda"
2805 nvenc_deps_any="libdl LoadLibrary"
2806 nvenc_encoder_deps="nvenc"
2807
2808 h263_v4l2m2m_decoder_deps="v4l2_m2m h263_v4l2_m2m"
2809 h263_v4l2m2m_encoder_deps="v4l2_m2m h263_v4l2_m2m"
2810 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2811 h264_cuvid_decoder_deps="cuda cuvid"
2812 h264_cuvid_decoder_select="h264_mp4toannexb_bsf"
2813 h264_mediacodec_decoder_deps="mediacodec"
2814 h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
2815 h264_mmal_decoder_deps="mmal"
2816 h264_nvenc_encoder_deps="nvenc"
2817 h264_omx_encoder_deps="omx"
2818 h264_qsv_decoder_deps="libmfx"
2819 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2820 h264_qsv_encoder_deps="libmfx"
2821 h264_qsv_encoder_select="qsvenc"
2822 h264_rkmpp_decoder_deps="rkmpp"
2823 h264_rkmpp_decoder_select="h264_mp4toannexb_bsf"
2824 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2825 h264_vaapi_encoder_select="vaapi_encode golomb"
2826 h264_vda_decoder_deps="vda"
2827 h264_vda_decoder_select="h264_decoder"
2828 h264_vdpau_decoder_deps="vdpau"
2829 h264_vdpau_decoder_select="h264_decoder"
2830 h264_v4l2m2m_decoder_deps="v4l2_m2m h264_v4l2_m2m"
2831 h264_v4l2m2m_encoder_deps="v4l2_m2m h264_v4l2_m2m"
2832 hevc_cuvid_decoder_deps="cuda cuvid"
2833 hevc_cuvid_decoder_select="hevc_mp4toannexb_bsf"
2834 hevc_mediacodec_decoder_deps="mediacodec"
2835 hevc_mediacodec_decoder_select="hevc_mp4toannexb_bsf hevc_parser"
2836 hevc_nvenc_encoder_deps="nvenc"
2837 hevc_qsv_decoder_deps="libmfx"
2838 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec hevc_qsv_hwaccel"
2839 hevc_qsv_encoder_deps="libmfx"
2840 hevc_qsv_encoder_select="hevcparse qsvenc"
2841 hevc_rkmpp_decoder_deps="rkmpp"
2842 hevc_rkmpp_decoder_select="hevc_mp4toannexb_bsf"
2843 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2844 hevc_vaapi_encoder_select="vaapi_encode golomb"
2845 hevc_v4l2m2m_decoder_deps="v4l2_m2m hevc_v4l2_m2m"
2846 hevc_v4l2m2m_encoder_deps="v4l2_m2m hevc_v4l2_m2m"
2847 mjpeg_cuvid_decoder_deps="cuda cuvid"
2848 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2849 mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
2850 mpeg1_cuvid_decoder_deps="cuda cuvid"
2851 mpeg1_vdpau_decoder_deps="vdpau"
2852 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
2853 mpeg1_v4l2m2m_decoder_deps="v4l2_m2m mpeg1_v4l2_m2m"
2854 mpeg2_crystalhd_decoder_select="crystalhd"
2855 mpeg2_cuvid_decoder_deps="cuda cuvid"
2856 mpeg2_mmal_decoder_deps="mmal"
2857 mpeg2_mediacodec_decoder_deps="mediacodec"
2858 mpeg2_qsv_decoder_deps="libmfx"
2859 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel"
2860 mpeg2_qsv_encoder_deps="libmfx"
2861 mpeg2_qsv_encoder_select="qsvenc"
2862 mpeg2_vaapi_encoder_deps="VAEncPictureParameterBufferMPEG2"
2863 mpeg2_vaapi_encoder_select="vaapi_encode"
2864 mpeg2_v4l2m2m_decoder_deps="v4l2_m2m mpeg2_v4l2_m2m"
2865 mpeg4_crystalhd_decoder_select="crystalhd"
2866 mpeg4_cuvid_decoder_deps="cuda cuvid"
2867 mpeg4_mediacodec_decoder_deps="mediacodec"
2868 mpeg4_mmal_decoder_deps="mmal"
2869 mpeg4_omx_encoder_deps="omx"
2870 mpeg4_vdpau_decoder_deps="vdpau"
2871 mpeg4_vdpau_decoder_select="mpeg4_decoder"
2872 mpeg4_v4l2m2m_decoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
2873 mpeg4_v4l2m2m_encoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
2874 mpeg_vdpau_decoder_deps="vdpau"
2875 mpeg_vdpau_decoder_select="mpeg2video_decoder"
2876 msmpeg4_crystalhd_decoder_select="crystalhd"
2877 nvenc_h264_encoder_select="h264_nvenc_encoder"
2878 nvenc_hevc_encoder_select="hevc_nvenc_encoder"
2879 vc1_crystalhd_decoder_select="crystalhd"
2880 vc1_cuvid_decoder_deps="cuda cuvid"
2881 vc1_mmal_decoder_deps="mmal"
2882 vc1_vdpau_decoder_deps="vdpau"
2883 vc1_vdpau_decoder_select="vc1_decoder"
2884 vc1_v4l2m2m_decoder_deps="v4l2_m2m vc1_v4l2_m2m"
2885 vp8_cuvid_decoder_deps="cuda cuvid"
2886 vp8_mediacodec_decoder_deps="mediacodec"
2887 vp8_qsv_decoder_deps="libmfx"
2888 vp8_qsv_decoder_select="qsvdec vp8_qsv_hwaccel vp8_parser"
2889 vp8_rkmpp_decoder_deps="rkmpp"
2890 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
2891 vp8_vaapi_encoder_select="vaapi_encode"
2892 vp8_v4l2m2m_decoder_deps="v4l2_m2m vp8_v4l2_m2m"
2893 vp8_v4l2m2m_encoder_deps="v4l2_m2m vp8_v4l2_m2m"
2894 vp9_cuvid_decoder_deps="cuda cuvid"
2895 vp9_mediacodec_decoder_deps="mediacodec"
2896 vp9_rkmpp_decoder_deps="rkmpp"
2897 vp9_vaapi_encoder_deps="VAEncPictureParameterBufferVP9"
2898 vp9_vaapi_encoder_select="vaapi_encode"
2899 vp9_v4l2m2m_decoder_deps="v4l2_m2m vp9_v4l2_m2m"
2900 wmv3_crystalhd_decoder_select="crystalhd"
2901 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
2902
2903 # parsers
2904 h264_parser_select="golomb h264dsp h264parse"
2905 hevc_parser_select="hevcparse"
2906 mpegaudio_parser_select="mpegaudioheader"
2907 mpegvideo_parser_select="mpegvideo"
2908 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
2909 vc1_parser_select="vc1dsp"
2910
2911 # bitstream_filters
2912 mjpeg2jpeg_bsf_select="jpegtables"
2913
2914 # external libraries
2915 aac_at_decoder_deps="audiotoolbox"
2916 ac3_at_decoder_deps="audiotoolbox"
2917 ac3_at_decoder_select="ac3_parser"
2918 adpcm_ima_qt_at_decoder_deps="audiotoolbox"
2919 alac_at_decoder_deps="audiotoolbox"
2920 amr_nb_at_decoder_deps="audiotoolbox"
2921 avisynth_deps_any="libdl LoadLibrary"
2922 avisynth_demuxer_deps="avisynth"
2923 avisynth_demuxer_select="riffdec"
2924 eac3_at_decoder_deps="audiotoolbox"
2925 eac3_at_decoder_select="ac3_parser"
2926 gsm_ms_at_decoder_deps="audiotoolbox"
2927 ilbc_at_decoder_deps="audiotoolbox"
2928 mp1_at_decoder_deps="audiotoolbox"
2929 mp2_at_decoder_deps="audiotoolbox"
2930 mp3_at_decoder_deps="audiotoolbox"
2931 mp1_at_decoder_select="mpegaudioheader"
2932 mp2_at_decoder_select="mpegaudioheader"
2933 mp3_at_decoder_select="mpegaudioheader"
2934 pcm_alaw_at_decoder_deps="audiotoolbox"
2935 pcm_mulaw_at_decoder_deps="audiotoolbox"
2936 qdmc_at_decoder_deps="audiotoolbox"
2937 qdm2_at_decoder_deps="audiotoolbox"
2938 aac_at_encoder_deps="audiotoolbox"
2939 aac_at_encoder_select="audio_frame_queue"
2940 alac_at_encoder_deps="audiotoolbox"
2941 alac_at_encoder_select="audio_frame_queue"
2942 ilbc_at_encoder_deps="audiotoolbox"
2943 ilbc_at_encoder_select="audio_frame_queue"
2944 pcm_alaw_at_encoder_deps="audiotoolbox"
2945 pcm_alaw_at_encoder_select="audio_frame_queue"
2946 pcm_mulaw_at_encoder_deps="audiotoolbox"
2947 pcm_mulaw_at_encoder_select="audio_frame_queue"
2948 chromaprint_muxer_deps="chromaprint"
2949 h264_videotoolbox_encoder_deps="pthreads"
2950 h264_videotoolbox_encoder_select="videotoolbox_encoder"
2951 libcelt_decoder_deps="libcelt"
2952 libfdk_aac_decoder_deps="libfdk_aac"
2953 libfdk_aac_encoder_deps="libfdk_aac"
2954 libfdk_aac_encoder_select="audio_frame_queue"
2955 libgme_demuxer_deps="libgme"
2956 libgsm_decoder_deps="libgsm"
2957 libgsm_encoder_deps="libgsm"
2958 libgsm_ms_decoder_deps="libgsm"
2959 libgsm_ms_encoder_deps="libgsm"
2960 libilbc_decoder_deps="libilbc"
2961 libilbc_encoder_deps="libilbc"
2962 libkvazaar_encoder_deps="libkvazaar"
2963 libmodplug_demuxer_deps="libmodplug"
2964 libmp3lame_encoder_deps="libmp3lame"
2965 libmp3lame_encoder_select="audio_frame_queue mpegaudioheader"
2966 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2967 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2968 libopencore_amrnb_encoder_select="audio_frame_queue"
2969 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2970 libopenh264_decoder_deps="libopenh264"
2971 libopenh264_decoder_select="h264_mp4toannexb_bsf"
2972 libopenh264_encoder_deps="libopenh264"
2973 libopenjpeg_decoder_deps="libopenjpeg"
2974 libopenjpeg_encoder_deps="libopenjpeg"
2975 libopenmpt_demuxer_deps="libopenmpt"
2976 libopus_decoder_deps="libopus"
2977 libopus_encoder_deps="libopus"
2978 libopus_encoder_select="audio_frame_queue"
2979 librsvg_decoder_deps="librsvg"
2980 libshine_encoder_deps="libshine"
2981 libshine_encoder_select="audio_frame_queue"
2982 libspeex_decoder_deps="libspeex"
2983 libspeex_encoder_deps="libspeex"
2984 libspeex_encoder_select="audio_frame_queue"
2985 libtheora_encoder_deps="libtheora"
2986 libtwolame_encoder_deps="libtwolame"
2987 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2988 libvorbis_decoder_deps="libvorbis"
2989 libvorbis_encoder_deps="libvorbis libvorbisenc"
2990 libvorbis_encoder_select="audio_frame_queue"
2991 libvpx_vp8_decoder_deps="libvpx"
2992 libvpx_vp8_encoder_deps="libvpx"
2993 libvpx_vp9_decoder_deps="libvpx"
2994 libvpx_vp9_encoder_deps="libvpx"
2995 libwavpack_encoder_deps="libwavpack"
2996 libwavpack_encoder_select="audio_frame_queue"
2997 libwebp_encoder_deps="libwebp"
2998 libwebp_anim_encoder_deps="libwebp"
2999 libx262_encoder_deps="libx262"
3000 libx264_encoder_deps="libx264"
3001 libx264rgb_encoder_deps="libx264 x264_csp_bgr"
3002 libx264rgb_encoder_select="libx264_encoder"
3003 libx265_encoder_deps="libx265"
3004 libxavs_encoder_deps="libxavs"
3005 libxvid_encoder_deps="libxvid"
3006 libzvbi_teletext_decoder_deps="libzvbi"
3007 videotoolbox_suggest="coreservices"
3008 videotoolbox_deps="corefoundation coremedia corevideo"
3009 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
3010 videotoolbox_encoder_suggest="vda_framework"
3011
3012 # demuxers / muxers
3013 ac3_demuxer_select="ac3_parser"
3014 aiff_muxer_select="iso_media"
3015 asf_demuxer_select="riffdec"
3016 asf_o_demuxer_select="riffdec"
3017 asf_muxer_select="riffenc"
3018 asf_stream_muxer_select="asf_muxer"
3019 avi_demuxer_select="iso_media riffdec exif"
3020 avi_muxer_select="riffenc"
3021 caf_demuxer_select="iso_media riffdec"
3022 caf_muxer_select="iso_media"
3023 dash_muxer_select="mp4_muxer"
3024 dash_demuxer_deps="libxml2"
3025 dirac_demuxer_select="dirac_parser"
3026 dts_demuxer_select="dca_parser"
3027 dtshd_demuxer_select="dca_parser"
3028 dv_demuxer_select="dvprofile"
3029 dv_muxer_select="dvprofile"
3030 dxa_demuxer_select="riffdec"
3031 eac3_demuxer_select="ac3_parser"
3032 f4v_muxer_select="mov_muxer"
3033 fifo_muxer_deps="threads"
3034 flac_demuxer_select="flac_parser"
3035 hds_muxer_select="flv_muxer"
3036 hls_muxer_select="mpegts_muxer"
3037 hls_muxer_suggest="gcrypt openssl"
3038 image2_alias_pix_demuxer_select="image2_demuxer"
3039 image2_brender_pix_demuxer_select="image2_demuxer"
3040 ipod_muxer_select="mov_muxer"
3041 ismv_muxer_select="mov_muxer"
3042 matroska_audio_muxer_select="matroska_muxer"
3043 matroska_demuxer_select="iso_media riffdec"
3044 matroska_demuxer_suggest="bzlib lzo zlib"
3045 matroska_muxer_select="iso_media riffenc"
3046 mmf_muxer_select="riffenc"
3047 mov_demuxer_select="iso_media riffdec"
3048 mov_demuxer_suggest="zlib"
3049 mov_muxer_select="iso_media riffenc rtpenc_chain"
3050 mp3_demuxer_select="mpegaudio_parser"
3051 mp3_muxer_select="mpegaudioheader"
3052 mp4_muxer_select="mov_muxer"
3053 mpegts_demuxer_select="iso_media"
3054 mpegts_muxer_select="adts_muxer latm_muxer"
3055 mpegtsraw_demuxer_select="mpegts_demuxer"
3056 mxf_d10_muxer_select="mxf_muxer"
3057 mxf_opatom_muxer_select="mxf_muxer"
3058 nut_muxer_select="riffenc"
3059 nuv_demuxer_select="riffdec"
3060 oga_muxer_select="ogg_muxer"
3061 ogg_demuxer_select="dirac_parse"
3062 ogv_muxer_select="ogg_muxer"
3063 opus_muxer_select="ogg_muxer"
3064 psp_muxer_select="mov_muxer"
3065 rtp_demuxer_select="sdp_demuxer"
3066 rtp_muxer_select="golomb"
3067 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
3068 rtsp_demuxer_select="http_protocol rtpdec"
3069 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
3070 sap_demuxer_select="sdp_demuxer"
3071 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
3072 sdp_demuxer_select="rtpdec"
3073 smoothstreaming_muxer_select="ismv_muxer"
3074 spdif_muxer_select="aac_parser"
3075 spx_muxer_select="ogg_muxer"
3076 swf_demuxer_suggest="zlib"
3077 tak_demuxer_select="tak_parser"
3078 tg2_muxer_select="mov_muxer"
3079 tgp_muxer_select="mov_muxer"
3080 vobsub_demuxer_select="mpegps_demuxer"
3081 w64_demuxer_select="wav_demuxer"
3082 w64_muxer_select="wav_muxer"
3083 wav_demuxer_select="riffdec"
3084 wav_muxer_select="riffenc"
3085 webm_muxer_select="iso_media riffenc"
3086 webm_dash_manifest_demuxer_select="matroska_demuxer"
3087 wtv_demuxer_select="mpegts_demuxer riffdec"
3088 wtv_muxer_select="mpegts_muxer riffenc"
3089 xmv_demuxer_select="riffdec"
3090 xwma_demuxer_select="riffdec"
3091
3092 # indevs / outdevs
3093 alsa_indev_deps="alsa"
3094 alsa_outdev_deps="alsa"
3095 avfoundation_indev_deps="avfoundation corevideo coremedia pthreads"
3096 avfoundation_indev_suggest="coregraphics applicationservices"
3097 avfoundation_indev_extralibs="-framework Foundation"
3098 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
3099 caca_outdev_deps="libcaca"
3100 decklink_deps_any="libdl LoadLibrary"
3101 decklink_indev_deps="decklink threads"
3102 decklink_indev_extralibs="-lstdc++"
3103 decklink_outdev_deps="decklink threads"
3104 decklink_outdev_extralibs="-lstdc++"
3105 libndi_newtek_indev_deps="libndi_newtek"
3106 libndi_newtek_indev_extralibs="-lndi"
3107 libndi_newtek_outdev_deps="libndi_newtek"
3108 libndi_newtek_outdev_extralibs="-lndi"
3109 dshow_indev_deps="IBaseFilter"
3110 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
3111 fbdev_indev_deps="linux_fb_h"
3112 fbdev_outdev_deps="linux_fb_h"
3113 gdigrab_indev_deps="CreateDIBSection"
3114 gdigrab_indev_extralibs="-lgdi32"
3115 gdigrab_indev_select="bmp_decoder"
3116 iec61883_indev_deps="libiec61883"
3117 jack_indev_deps="jack"
3118 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
3119 kmsgrab_indev_deps="libdrm"
3120 lavfi_indev_deps="avfilter"
3121 libcdio_indev_deps="libcdio"
3122 libdc1394_indev_deps="libdc1394"
3123 openal_indev_deps="openal"
3124 opengl_outdev_deps="opengl"
3125 oss_indev_deps_any="soundcard_h sys_soundcard_h"
3126 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
3127 pulse_indev_deps="libpulse"
3128 pulse_outdev_deps="libpulse"
3129 sdl2_outdev_deps="sdl2"
3130 sndio_indev_deps="sndio"
3131 sndio_outdev_deps="sndio"
3132 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
3133 v4l2_indev_suggest="libv4l2"
3134 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
3135 v4l2_outdev_suggest="libv4l2"
3136 vfwcap_indev_deps="vfw32 vfwcap_defines"
3137 xcbgrab_indev_deps="libxcb"
3138 xcbgrab_indev_suggest="libxcb_shm libxcb_shape libxcb_xfixes"
3139 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
3140 xv_outdev_extralibs="-lXv -lX11 -lXext"
3141
3142 # protocols
3143 async_protocol_deps="threads"
3144 bluray_protocol_deps="libbluray"
3145 ffrtmpcrypt_protocol_conflict="librtmp_protocol"
3146 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
3147 ffrtmpcrypt_protocol_select="tcp_protocol"
3148 ffrtmphttp_protocol_conflict="librtmp_protocol"
3149 ffrtmphttp_protocol_select="http_protocol"
3150 ftp_protocol_select="tcp_protocol"
3151 gopher_protocol_select="network"
3152 http_protocol_select="tcp_protocol"
3153 http_protocol_suggest="zlib"
3154 httpproxy_protocol_select="tcp_protocol"
3155 httpproxy_protocol_suggest="zlib"
3156 https_protocol_select="tls_protocol"
3157 https_protocol_suggest="zlib"
3158 icecast_protocol_select="http_protocol"
3159 librtmp_protocol_deps="librtmp"
3160 librtmpe_protocol_deps="librtmp"
3161 librtmps_protocol_deps="librtmp"
3162 librtmpt_protocol_deps="librtmp"
3163 librtmpte_protocol_deps="librtmp"
3164 libsmbclient_protocol_deps="libsmbclient gplv3"
3165 libssh_protocol_deps="libssh"
3166 mmsh_protocol_select="http_protocol"
3167 mmst_protocol_select="network"
3168 rtmp_protocol_conflict="librtmp_protocol"
3169 rtmp_protocol_select="tcp_protocol"
3170 rtmp_protocol_suggest="zlib"
3171 rtmpe_protocol_select="ffrtmpcrypt_protocol"
3172 rtmpe_protocol_suggest="zlib"
3173 rtmps_protocol_conflict="librtmp_protocol"
3174 rtmps_protocol_select="tls_protocol"
3175 rtmps_protocol_suggest="zlib"
3176 rtmpt_protocol_select="ffrtmphttp_protocol"
3177 rtmpt_protocol_suggest="zlib"
3178 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
3179 rtmpte_protocol_suggest="zlib"
3180 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
3181 rtmpts_protocol_suggest="zlib"
3182 rtp_protocol_select="udp_protocol"
3183 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
3184 sctp_protocol_select="network"
3185 srtp_protocol_select="rtp_protocol srtp"
3186 tcp_protocol_select="network"
3187 tls_gnutls_protocol_conflict="tls_schannel_protocol tls_securetransport_protocol"
3188 tls_gnutls_protocol_deps="gnutls"
3189 tls_gnutls_protocol_select="tcp_protocol"
3190 tls_openssl_protocol_conflict="tls_schannel_protocol tls_securetransport_protocol tls_gnutls_protocol"
3191 tls_openssl_protocol_deps="openssl"
3192 tls_openssl_protocol_select="tcp_protocol"
3193 tls_schannel_protocol_deps="schannel"
3194 tls_schannel_protocol_select="tcp_protocol"
3195 tls_securetransport_protocol_deps="securetransport"
3196 tls_securetransport_protocol_select="tcp_protocol"
3197 tls_protocol_deps_any="tls_schannel_protocol tls_securetransport_protocol tls_gnutls_protocol tls_openssl_protocol"
3198 udp_protocol_select="network"
3199 udplite_protocol_select="network"
3200 unix_protocol_deps="sys_un_h"
3201 unix_protocol_select="network"
3202
3203 # filters
3204 afftfilt_filter_deps="avcodec"
3205 afftfilt_filter_select="fft"
3206 afir_filter_deps="avcodec"
3207 afir_filter_select="fft"
3208 amovie_filter_deps="avcodec avformat"
3209 aresample_filter_deps="swresample"
3210 ass_filter_deps="libass"
3211 atempo_filter_deps="avcodec"
3212 atempo_filter_select="rdft"
3213 azmq_filter_deps="libzmq"
3214 blackframe_filter_deps="gpl"
3215 boxblur_filter_deps="gpl"
3216 bs2b_filter_deps="libbs2b"
3217 colormatrix_filter_deps="gpl"
3218 coreimage_filter_deps="coreimage appkit"
3219 coreimage_filter_extralibs="-framework OpenGL"
3220 coreimagesrc_filter_deps="coreimage appkit"
3221 coreimagesrc_filter_extralibs="-framework OpenGL"
3222 cover_rect_filter_deps="avcodec avformat gpl"
3223 cropdetect_filter_deps="gpl"
3224 deinterlace_qsv_filter_deps="libmfx"
3225 deinterlace_vaapi_filter_deps="vaapi"
3226 delogo_filter_deps="gpl"
3227 deshake_filter_select="pixelutils"
3228 deshake_filter_suggest="opencl"
3229 drawtext_filter_deps="libfreetype"
3230 drawtext_filter_suggest="libfontconfig libfribidi"
3231 elbg_filter_deps="avcodec"
3232 eq_filter_deps="gpl"
3233 fftfilt_filter_deps="avcodec"
3234 fftfilt_filter_select="rdft"
3235 find_rect_filter_deps="avcodec avformat gpl"
3236 firequalizer_filter_deps="avcodec"
3237 firequalizer_filter_select="rdft"
3238 flite_filter_deps="libflite"
3239 framerate_filter_select="pixelutils"
3240 frei0r_filter_deps="frei0r libdl"
3241 frei0r_src_filter_deps="frei0r libdl"
3242 fspp_filter_deps="gpl"
3243 geq_filter_deps="gpl"
3244 histeq_filter_deps="gpl"
3245 hqdn3d_filter_deps="gpl"
3246 interlace_filter_deps="gpl"
3247 kerndeint_filter_deps="gpl"
3248 ladspa_filter_deps="ladspa libdl"
3249 mcdeint_filter_deps="avcodec gpl"
3250 movie_filter_deps="avcodec avformat"
3251 mpdecimate_filter_deps="gpl"
3252 mpdecimate_filter_select="pixelutils"
3253 mptestsrc_filter_deps="gpl"
3254 negate_filter_deps="lut_filter"
3255 nnedi_filter_deps="gpl"
3256 ocr_filter_deps="libtesseract"
3257 ocv_filter_deps="libopencv"
3258 owdenoise_filter_deps="gpl"
3259 pan_filter_deps="swresample"
3260 perspective_filter_deps="gpl"
3261 phase_filter_deps="gpl"
3262 pp7_filter_deps="gpl"
3263 pp_filter_deps="gpl postproc"
3264 pullup_filter_deps="gpl"
3265 removelogo_filter_deps="avcodec avformat swscale"
3266 repeatfields_filter_deps="gpl"
3267 resample_filter_deps="avresample"
3268 rubberband_filter_deps="librubberband"
3269 sab_filter_deps="gpl swscale"
3270 scale2ref_filter_deps="swscale"
3271 scale_filter_deps="swscale"
3272 scale_qsv_filter_deps="libmfx"
3273 select_filter_select="pixelutils"
3274 showcqt_filter_deps="avcodec avformat swscale"
3275 showcqt_filter_suggest="libfontconfig libfreetype"
3276 showcqt_filter_select="fft"
3277 showfreqs_filter_deps="avcodec"
3278 showfreqs_filter_select="fft"
3279 showspectrum_filter_deps="avcodec"
3280 showspectrum_filter_select="fft"
3281 showspectrumpic_filter_deps="avcodec"
3282 showspectrumpic_filter_select="fft"
3283 signature_filter_deps="gpl avcodec avformat"
3284 smartblur_filter_deps="gpl swscale"
3285 sofalizer_filter_deps="libmysofa avcodec"
3286 sofalizer_filter_select="fft"
3287 spectrumsynth_filter_deps="avcodec"
3288 spectrumsynth_filter_select="fft"
3289 spp_filter_deps="gpl avcodec"
3290 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3291 stereo3d_filter_deps="gpl"
3292 subtitles_filter_deps="avformat avcodec libass"
3293 super2xsai_filter_deps="gpl"
3294 pixfmts_super2xsai_test_deps="super2xsai_filter"
3295 tinterlace_filter_deps="gpl"
3296 tinterlace_merge_test_deps="tinterlace_filter"
3297 tinterlace_pad_test_deps="tinterlace_filter"
3298 tonemap_filter_deps="const_nan"
3299 uspp_filter_deps="gpl avcodec"
3300 unsharp_filter_suggest="opencl"
3301 vaguedenoiser_filter_deps="gpl"
3302 vidstabdetect_filter_deps="libvidstab"
3303 vidstabtransform_filter_deps="libvidstab"
3304 libvmaf_filter_deps="libvmaf"
3305 zmq_filter_deps="libzmq"
3306 zoompan_filter_deps="swscale"
3307 zscale_filter_deps="libzimg const_nan"
3308 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3309
3310 # examples
3311 avio_dir_cmd_deps="avformat avutil"
3312 avio_reading_deps="avformat avcodec avutil"
3313 decode_audio_example_deps="avcodec avutil"
3314 decode_video_example_deps="avcodec avutil"
3315 demuxing_decoding_example_deps="avcodec avformat avutil"
3316 encode_audio_example_deps="avcodec avutil"
3317 encode_video_example_deps="avcodec avutil"
3318 extract_mvs_example_deps="avcodec avformat avutil"
3319 filter_audio_example_deps="avfilter avutil"
3320 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3321 filtering_video_example_deps="avfilter avcodec avformat avutil"
3322 http_multiclient_example_deps="avformat avutil fork"
3323 hw_decode_example_deps="avcodec avformat avutil"
3324 metadata_example_deps="avformat avutil"
3325 muxing_example_deps="avcodec avformat avutil swscale"
3326 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
3327 remuxing_example_deps="avcodec avformat avutil"
3328 resampling_audio_example_deps="avutil swresample"
3329 scaling_video_example_deps="avutil swscale"
3330 transcode_aac_example_deps="avcodec avformat swresample"
3331 transcoding_example_deps="avfilter avcodec avformat avutil"
3332
3333 # EXTRALIBS_LIST
3334 cpu_init_extralibs="pthreads_extralibs"
3335 cws2fws_extralibs="zlib_extralibs"
3336
3337 # libraries, in linking order
3338 avcodec_deps="avutil"
3339 avcodec_suggest="libm"
3340 avcodec_select="null_bsf"
3341 avdevice_deps="avformat avcodec avutil"
3342 avdevice_suggest="libm"
3343 avfilter_deps="avutil"
3344 avfilter_suggest="libm"
3345 avformat_deps="avcodec avutil"
3346 avformat_suggest="libm network"
3347 avresample_deps="avutil"
3348 avresample_suggest="libm"
3349 avutil_suggest="clock_gettime libm libdrm libmfx opencl user32 vaapi videotoolbox corefoundation corevideo coremedia wincrypt"
3350 postproc_deps="avutil gpl"
3351 postproc_suggest="libm"
3352 swresample_deps="avutil"
3353 swresample_suggest="libm libsoxr"
3354 swscale_deps="avutil"
3355 swscale_suggest="libm"
3356
3357 avcodec_extralibs="pthreads_extralibs iconv_extralibs"
3358 avfilter_extralibs="pthreads_extralibs"
3359 avutil_extralibs="nanosleep_extralibs pthreads_extralibs vaapi_drm_extralibs vaapi_x11_extralibs vdpau_x11_extralibs"
3360
3361 # programs
3362 ffmpeg_deps="avcodec avfilter avformat swresample"
3363 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3364                null_filter
3365                trim_filter"
3366 ffmpeg_suggest="ole32 psapi shell32"
3367 ffplay_deps="avcodec avformat swscale swresample sdl2"
3368 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3369 ffplay_suggest="shell32"
3370 ffprobe_deps="avcodec avformat"
3371 ffprobe_suggest="shell32"
3372 ffserver_deps="avformat fork sarestart"
3373 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
3374
3375 # documentation
3376 podpages_deps="perl"
3377 manpages_deps="perl pod2man"
3378 htmlpages_deps="perl"
3379 htmlpages_deps_any="makeinfo_html texi2html"
3380 txtpages_deps="perl makeinfo"
3381 doc_deps_any="manpages htmlpages podpages txtpages"
3382
3383 # default parameters
3384
3385 logfile="ffbuild/config.log"
3386
3387 # installation paths
3388 prefix_default="/usr/local"
3389 bindir_default='${prefix}/bin'
3390 datadir_default='${prefix}/share/ffmpeg'
3391 docdir_default='${prefix}/share/doc/ffmpeg'
3392 incdir_default='${prefix}/include'
3393 libdir_default='${prefix}/lib'
3394 mandir_default='${prefix}/share/man'
3395
3396 # toolchain
3397 ar_default="ar"
3398 cc_default="gcc"
3399 cxx_default="g++"
3400 host_cc_default="gcc"
3401 doxygen_default="doxygen"
3402 install="install"
3403 ln_s_default="ln -s -f"
3404 nm_default="nm -g"
3405 pkg_config_default=pkg-config
3406 ranlib_default="ranlib"
3407 strip_default="strip"
3408 version_script='--version-script'
3409 x86asmexe_default="nasm"
3410 windres_default="windres"
3411 nvcc_default="nvcc"
3412 nvccflags_default="-gencode arch=compute_30,code=sm_30 -O2"
3413 striptype="direct"
3414
3415 # OS
3416 target_os_default=$(tolower $(uname -s))
3417 host_os=$target_os_default
3418
3419 # machine
3420 if test "$target_os_default" = aix; then
3421     arch_default=$(uname -p)
3422     strip_default="strip -X32_64"
3423 else
3424     arch_default=$(uname -m)
3425 fi
3426 cpu="generic"
3427 intrinsics="none"
3428
3429 # configurable options
3430 enable $PROGRAM_LIST
3431 enable $DOCUMENT_LIST
3432 enable $EXAMPLE_LIST
3433 enable $(filter_out avresample $LIBRARY_LIST)
3434 enable stripping
3435
3436 enable asm
3437 enable debug
3438 enable doc
3439 enable faan faandct faanidct
3440 enable optimizations
3441 enable runtime_cpudetect
3442 enable safe_bitstream_reader
3443 enable static
3444 enable swscale_alpha
3445 enable valgrind_backtrace
3446
3447 sws_max_filter_size_default=256
3448 set_default sws_max_filter_size
3449
3450 # internal components are enabled by default
3451 enable $EXTRALIBS_LIST
3452
3453 # Avoid external, non-system, libraries getting enabled by dependency resolution
3454 disable $EXTERNAL_LIBRARY_LIST $HWACCEL_LIBRARY_LIST
3455
3456 # build settings
3457 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3458 LIBPREF="lib"
3459 LIBSUF=".a"
3460 FULLNAME='$(NAME)$(BUILDSUF)'
3461 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3462 SLIBPREF="lib"
3463 SLIBSUF=".so"
3464 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3465 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3466 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3467 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3468 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3469 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3470 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
3471
3472 asflags_filter=echo
3473 cflags_filter=echo
3474 ldflags_filter=echo
3475
3476 AS_C='-c'
3477 AS_O='-o $@'
3478 CC_C='-c'
3479 CC_E='-E -o $@'
3480 CC_O='-o $@'
3481 CXX_C='-c'
3482 CXX_O='-o $@'
3483 OBJCC_C='-c'
3484 OBJCC_E='-E -o $@'
3485 OBJCC_O='-o $@'
3486 X86ASM_O='-o $@'
3487 LD_O='-o $@'
3488 LD_LIB='-l%'
3489 LD_PATH='-L'
3490 HOSTCC_C='-c'
3491 HOSTCC_E='-E -o $@'
3492 HOSTCC_O='-o $@'
3493 HOSTLD_O='-o $@'
3494 NVCC_C='-c'
3495 NVCC_O='-o $@'
3496
3497 host_extralibs='-lm'
3498 host_cflags_filter=echo
3499 host_ldflags_filter=echo
3500
3501 target_path='$(CURDIR)'
3502
3503 # since the object filename is not given with the -MM flag, the compiler
3504 # is only able to print the basename, and we must add the path ourselves
3505 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3506 DEPFLAGS='-MM'
3507
3508 mkdir -p ffbuild
3509
3510 # find source path
3511 if test -f configure; then
3512     source_path=.
3513 else
3514     source_path=$(cd $(dirname "$0"); pwd)
3515     case "$source_path" in
3516         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3517     esac
3518     test -e "$source_path/config.h" &&
3519         die "Out of tree builds are impossible with config.h in source dir."
3520 fi
3521
3522 for v in "$@"; do
3523     r=${v#*=}
3524     l=${v%"$r"}
3525     r=$(sh_quote "$r")
3526     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3527 done
3528
3529 find_things(){
3530     thing=$1
3531     pattern=$2
3532     file=$source_path/$3
3533     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
3534 }
3535
3536 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
3537 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
3538 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
3539 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
3540 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
3541 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
3542 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
3543 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
3544 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
3545
3546 find_things_extern(){
3547     thing=$1
3548     pattern=$2
3549     file=$source_path/$3
3550     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
3551 }
3552
3553 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3554 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3555
3556 AVCODEC_COMPONENTS_LIST="
3557     $BSF_LIST
3558     $DECODER_LIST
3559     $ENCODER_LIST
3560     $HWACCEL_LIST
3561     $PARSER_LIST
3562 "
3563
3564 AVDEVICE_COMPONENTS_LIST="
3565     $INDEV_LIST
3566     $OUTDEV_LIST
3567 "
3568
3569 AVFILTER_COMPONENTS_LIST="
3570     $FILTER_LIST
3571 "
3572
3573 AVFORMAT_COMPONENTS_LIST="
3574     $DEMUXER_LIST
3575     $MUXER_LIST
3576     $PROTOCOL_LIST
3577 "
3578
3579 ALL_COMPONENTS="
3580     $AVCODEC_COMPONENTS_LIST
3581     $AVDEVICE_COMPONENTS_LIST
3582     $AVFILTER_COMPONENTS_LIST
3583     $AVFORMAT_COMPONENTS_LIST
3584 "
3585
3586 for n in $COMPONENT_LIST; do
3587     v=$(toupper ${n%s})_LIST
3588     eval enable \$$v
3589     eval ${n}_if_any="\$$v"
3590 done
3591
3592 enable $ARCH_EXT_LIST
3593
3594 die_unknown(){
3595     echo "Unknown option \"$1\"."
3596     echo "See $0 --help for available options."
3597     exit 1
3598 }
3599
3600 print_in_columns() {
3601     cols=$(expr $ncols / 24)
3602     cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
3603 }
3604
3605 show_list() {
3606     suffix=_$1
3607     shift
3608     echo $* | sed s/$suffix//g | print_in_columns
3609     exit 0
3610 }
3611
3612 rand_list(){
3613     IFS=', '
3614     set -- $*
3615     unset IFS
3616     for thing; do
3617         comp=${thing%:*}
3618         prob=${thing#$comp}
3619         prob=${prob#:}
3620         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3621         echo "prob ${prob:-0.5}"
3622         printf '%s\n' $comp
3623     done
3624 }
3625
3626 do_random(){
3627     action=$1
3628     shift
3629     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3630     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3631 }
3632
3633 for opt do
3634     optval="${opt#*=}"
3635     case "$opt" in
3636         --extra-ldflags=*)
3637             add_ldflags $optval
3638         ;;
3639         --extra-ldexeflags=*)
3640             add_ldexeflags $optval
3641         ;;
3642         --extra-ldlibflags=*)
3643             add_ldlibflags $optval
3644         ;;
3645         --extra-libs=*)
3646             add_extralibs $optval
3647         ;;
3648         --disable-devices)
3649             disable $INDEV_LIST $OUTDEV_LIST
3650         ;;
3651         --enable-debug=*)
3652             debuglevel="$optval"
3653         ;;
3654         --disable-programs)
3655             disable $PROGRAM_LIST
3656         ;;
3657         --disable-everything)
3658             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3659         ;;
3660         --disable-all)
3661             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3662             disable $LIBRARY_LIST $PROGRAM_LIST doc
3663             enable avutil
3664         ;;
3665         --enable-random|--disable-random)
3666             action=${opt%%-random}
3667             do_random ${action#--} $COMPONENT_LIST
3668         ;;
3669         --enable-random=*|--disable-random=*)
3670             action=${opt%%-random=*}
3671             do_random ${action#--} $optval
3672         ;;
3673         --enable-sdl)
3674             enable sdl2
3675         ;;
3676         --enable-*=*|--disable-*=*)
3677             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3678             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3679             eval list=\$$(toupper $thing)_LIST
3680             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3681             list=$(filter "$name" $list)
3682             [ "$list" = "" ] && warn "Option $opt did not match anything"
3683             $action $list
3684         ;;
3685         --enable-yasm|--disable-yasm)
3686             warn "The ${opt} option is only provided for compatibility and will be\n"\
3687                  "removed in the future. Use --enable-x86asm / --disable-x86asm instead."
3688             test $opt = --enable-yasm && x86asm=yes || x86asm=no
3689         ;;
3690         --yasmexe=*)
3691             warn "The --yasmexe option is only provided for compatibility and will be\n"\
3692                  "removed in the future. Use --x86asmexe instead."
3693             x86asmexe="$optval"
3694         ;;
3695         --enable-?*|--disable-?*)
3696             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3697             if is_in $option $COMPONENT_LIST; then
3698                 test $action = disable && action=unset
3699                 eval $action \$$(toupper ${option%s})_LIST
3700             elif is_in $option $CMDLINE_SELECT; then
3701                 $action $option
3702             else
3703                 die_unknown $opt
3704             fi
3705         ;;
3706         --list-*)
3707             NAME="${opt#--list-}"
3708             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3709             NAME=${NAME%s}
3710             eval show_list $NAME \$$(toupper $NAME)_LIST
3711         ;;
3712         --help|-h) show_help
3713         ;;
3714         --quiet|-q) quiet=yes
3715         ;;
3716         --fatal-warnings) enable fatal_warnings
3717         ;;
3718         --libfuzzer=*)
3719             libfuzzer_path="$optval"
3720         ;;
3721         *)
3722             optname="${opt%%=*}"
3723             optname="${optname#--}"
3724             optname=$(echo "$optname" | sed 's/-/_/g')
3725             if is_in $optname $CMDLINE_SET; then
3726                 eval $optname='$optval'
3727             elif is_in $optname $CMDLINE_APPEND; then
3728                 append $optname "$optval"
3729             else
3730                 die_unknown $opt
3731             fi
3732         ;;
3733     esac
3734 done
3735
3736 for e in $env; do
3737     eval "export $e"
3738 done
3739
3740 if disabled autodetect; then
3741
3742     # Unless iconv is explicitely disabled by the user, we still want to probe
3743     # for the iconv from the libc.
3744     disabled iconv || enable libc_iconv
3745
3746     disable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3747     disable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3748 fi
3749 # Mark specifically enabled, but normally autodetected libraries as requested.
3750 for lib in $AUTODETECT_LIBS; do
3751     enabled $lib && request $lib
3752 done
3753 #TODO: switch to $AUTODETECT_LIBS when $THREADS_LIST is supported the same way
3754 enable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3755 enable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3756
3757 disabled logging && logfile=/dev/null
3758
3759 die_license_disabled() {
3760     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
3761 }
3762
3763 die_license_disabled_gpl() {
3764     enabled $1 || { enabled $v && die "$v is incompatible with the gpl and --enable-$1 is not specified."; }
3765 }
3766
3767 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3768 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3769
3770 enabled gpl && map "die_license_disabled_gpl nonfree" $EXTERNAL_LIBRARY_NONFREE_LIST
3771 map "die_license_disabled nonfree" $HWACCEL_LIBRARY_NONFREE_LIST
3772
3773 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3774
3775 # Disable all the library-specific components if the library itself
3776 # is disabled, see AVCODEC_LIST and following _LIST variables.
3777
3778 disable_components(){
3779     disabled ${1} && disable $(
3780         eval components="\$$(toupper ${1})_COMPONENTS"
3781         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
3782     )
3783 }
3784
3785 map 'disable_components $v' $LIBRARY_LIST
3786
3787 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
3788 set >> $logfile
3789
3790 test -n "$valgrind" && toolchain="valgrind-memcheck"
3791
3792 enabled ossfuzz && {
3793     add_cflags  -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp -fno-omit-frame-pointer
3794     add_ldflags -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp
3795 }
3796
3797 case "$toolchain" in
3798     *-asan)
3799         cc_default="${toolchain%-asan}"
3800         add_cflags  -fsanitize=address
3801         add_ldflags -fsanitize=address
3802     ;;
3803     *-msan)
3804         cc_default="${toolchain%-msan}"
3805         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
3806         add_ldflags -fsanitize=memory
3807     ;;
3808     *-tsan)
3809         cc_default="${toolchain%-tsan}"
3810         add_cflags  -fsanitize=thread -fPIE
3811         add_ldflags -fsanitize=thread -pie
3812         case "$toolchain" in
3813             gcc-tsan)
3814                 add_cflags  -fPIC
3815                 add_ldflags -fPIC
3816                 ;;
3817         esac
3818     ;;
3819     *-usan)
3820         cc_default="${toolchain%-usan}"
3821         add_cflags  -fsanitize=undefined
3822         add_ldflags -fsanitize=undefined
3823     ;;
3824     valgrind-*)
3825         target_exec_default="valgrind"
3826         case "$toolchain" in
3827             valgrind-massif)
3828                 target_exec_args="--tool=massif --alloc-fn=av_malloc --alloc-fn=av_mallocz --alloc-fn=av_calloc --alloc-fn=av_fast_padded_malloc --alloc-fn=av_fast_malloc --alloc-fn=av_realloc_f --alloc-fn=av_fast_realloc --alloc-fn=av_realloc"
3829                 ;;
3830             valgrind-memcheck)
3831                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3832                 ;;
3833         esac
3834     ;;
3835     msvc)
3836         # Check whether the current MSVC version needs the C99 converter.
3837         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3838         # support enough of C99 to build ffmpeg. Default to the new
3839         # behaviour if the regexp was unable to match anything, since this
3840         # successfully parses the version number of existing supported
3841         # versions that require the converter (MSVC 2010 and 2012).
3842         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3843         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3844             cc_default="cl"
3845             cxx_default="cl"
3846         else
3847             cc_default="c99wrap cl"
3848             cxx_default="c99wrap cl"
3849         fi
3850         ld_default="$source_path/compat/windows/mslink"
3851         nm_default="dumpbin -symbols"
3852         ar_default="lib"
3853         case "$arch" in
3854         arm*)
3855             as_default="armasm"
3856             ;;
3857         esac
3858         target_os_default="win32"
3859         # Use a relative path for TMPDIR. This makes sure all the
3860         # ffconf temp files are written with a relative path, avoiding
3861         # issues with msys/win32 path conversion for MSVC parameters
3862         # such as -Fo<file> or -out:<file>.
3863         TMPDIR=.
3864     ;;
3865     icl)
3866         cc_default="icl"
3867         ld_default="xilink"
3868         nm_default="dumpbin -symbols"
3869         ar_default="xilib"
3870         target_os_default="win32"
3871         TMPDIR=.
3872     ;;
3873     gcov)
3874         add_cflags  -fprofile-arcs -ftest-coverage
3875         add_ldflags -fprofile-arcs -ftest-coverage
3876     ;;
3877     llvm-cov)
3878         add_cflags -fprofile-arcs -ftest-coverage
3879         add_ldflags --coverage
3880     ;;
3881     hardened)
3882         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3883         add_cflags   -fno-strict-overflow -fstack-protector-all
3884         add_ldflags  -Wl,-z,relro -Wl,-z,now
3885         add_cflags   -fPIE
3886         add_ldexeflags -fPIE -pie
3887     ;;
3888     ?*)
3889         die "Unknown toolchain $toolchain"
3890     ;;
3891 esac
3892
3893 test -n "$cross_prefix" && enable cross_compile
3894
3895 if enabled cross_compile; then
3896     test -n "$arch" && test -n "$target_os" ||
3897         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
3898 fi
3899
3900 ar_default="${cross_prefix}${ar_default}"
3901 cc_default="${cross_prefix}${cc_default}"
3902 cxx_default="${cross_prefix}${cxx_default}"
3903 nm_default="${cross_prefix}${nm_default}"
3904 pkg_config_default="${cross_prefix}${pkg_config_default}"
3905 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
3906     ranlib_default="${cross_prefix}${ranlib_default} -D"
3907 else
3908     ranlib_default="${cross_prefix}${ranlib_default}"
3909 fi
3910 strip_default="${cross_prefix}${strip_default}"
3911 windres_default="${cross_prefix}${windres_default}"
3912
3913 sysinclude_default="${sysroot}/usr/include"
3914
3915 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3916     target_exec target_os x86asmexe nvcc
3917 enabled cross_compile || host_cc_default=$cc
3918 set_default host_cc
3919
3920 pkg_config_fail_message=""
3921 if ! $pkg_config --version >/dev/null 2>&1; then
3922     warn "$pkg_config not found, library detection may fail."
3923     pkg_config=false
3924 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
3925     pkg_config_fail_message="
3926 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
3927 fi
3928
3929 if test $doxygen != $doxygen_default && \
3930   ! $doxygen --version >/dev/null 2>&1; then
3931     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3932 fi
3933
3934 exesuf() {
3935     case $1 in
3936         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3937     esac
3938 }
3939
3940 EXESUF=$(exesuf $target_os)
3941 HOSTEXESUF=$(exesuf $host_os)
3942
3943 # set temporary file name
3944 : ${TMPDIR:=$TEMPDIR}
3945 : ${TMPDIR:=$TMP}
3946 : ${TMPDIR:=/tmp}
3947
3948 if [ -n "$tempprefix" ] ; then
3949     mktemp(){
3950         tmpname="$tempprefix.${HOSTNAME}.${UID}"
3951         echo "$tmpname"
3952         mkdir "$tmpname"
3953     }
3954 elif ! check_cmd mktemp -u XXXXXX; then
3955     # simple replacement for missing mktemp
3956     # NOT SAFE FOR GENERAL USE
3957     mktemp(){
3958         tmpname="${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3959         echo "$tmpname"
3960         mkdir "$tmpname"
3961     }
3962 fi
3963
3964 FFTMPDIR=$(mktemp -d "${TMPDIR}/ffconf.XXXXXXXX" 2> /dev/null) ||
3965     die "Unable to create temporary directory in $TMPDIR."
3966
3967 tmpfile(){
3968     tmp="${FFTMPDIR}/test"$2
3969     (set -C; exec > $tmp) 2> /dev/null ||
3970         die "Unable to create temporary file in $FFTMPDIR."
3971     eval $1=$tmp
3972 }
3973
3974 trap 'rm -rf -- "$FFTMPDIR"' EXIT
3975 trap 'exit 2' INT
3976
3977 tmpfile TMPASM .asm
3978 tmpfile TMPC   .c
3979 tmpfile TMPCPP .cpp
3980 tmpfile TMPE   $EXESUF
3981 tmpfile TMPH   .h
3982 tmpfile TMPM   .m
3983 tmpfile TMPO   .o
3984 tmpfile TMPS   .S
3985 tmpfile TMPSH  .sh
3986 tmpfile TMPV   .ver
3987
3988 unset -f mktemp
3989
3990 chmod +x $TMPE
3991
3992 # make sure we can execute files in $TMPDIR
3993 cat > $TMPSH 2>> $logfile <<EOF
3994 #! /bin/sh
3995 EOF
3996 chmod +x $TMPSH >> $logfile 2>&1
3997 if ! $TMPSH >> $logfile 2>&1; then
3998     cat <<EOF
3999 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
4000 variable to another directory and make sure that it is not mounted noexec.
4001 EOF
4002     die "Sanity test failed."
4003 fi
4004
4005 armasm_flags(){
4006     for flag; do
4007         case $flag in
4008             # Filter out MSVC cl.exe options from cflags that shouldn't
4009             # be passed to gas-preprocessor
4010             -M[TD]*)                                            ;;
4011             *)                  echo $flag                      ;;
4012         esac
4013    done
4014 }
4015
4016 ccc_flags(){
4017     for flag; do
4018         case $flag in
4019             -std=c99)           echo -c99                       ;;
4020             -mcpu=*)            echo -arch ${flag#*=}           ;;
4021             -mieee)             echo -ieee                      ;;
4022             -O*|-fast)          echo $flag                      ;;
4023             -fno-math-errno)    echo -assume nomath_errno       ;;
4024             -g)                 echo -g3                        ;;
4025             -Wall)              echo -msg_enable level2         ;;
4026             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
4027             -Wl,*)              echo $flag                      ;;
4028             -f*|-W*)                                            ;;
4029             *)                  echo $flag                      ;;
4030         esac
4031    done
4032 }
4033
4034 cparser_flags(){
4035     for flag; do
4036         case $flag in
4037             -Wno-switch)             echo -Wno-switch-enum ;;
4038             -Wno-format-zero-length) ;;
4039             -Wdisabled-optimization) ;;
4040             -Wno-pointer-sign)       echo -Wno-other ;;
4041             *)                       echo $flag ;;
4042         esac
4043     done
4044 }
4045
4046 msvc_common_flags(){
4047     for flag; do
4048         case $flag in
4049             # In addition to specifying certain flags under the compiler
4050             # specific filters, they must be specified here as well or else the
4051             # generic catch all at the bottom will print the original flag.
4052             -Wall)                ;;
4053             -Wextra)              ;;
4054             -std=c99)             ;;
4055             # Common flags
4056             -fomit-frame-pointer) ;;
4057             -g)                   echo -Z7 ;;
4058             -fno-math-errno)      ;;
4059             -fno-common)          ;;
4060             -fno-signed-zeros)    ;;
4061             -fPIC)                ;;
4062             -mthumb)              ;;
4063             -march=*)             ;;
4064             -lz)                  echo zlib.lib ;;
4065             -lx264)               echo libx264.lib ;;
4066             -lstdc++)             ;;
4067             -l*)                  echo ${flag#-l}.lib ;;
4068             -LARGEADDRESSAWARE)   echo $flag ;;
4069             -L*)                  echo -libpath:${flag#-L} ;;
4070             *)                    echo $flag ;;
4071         esac
4072     done
4073 }
4074
4075 msvc_flags(){
4076     msvc_common_flags "$@"
4077     for flag; do
4078         case $flag in
4079             -Wall)                echo -W3 -wd4018 -wd4146 -wd4244 -wd4305     \
4080                                        -wd4554 ;;
4081             -Wextra)              echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
4082                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
4083                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
4084                                        -wd4307 \
4085                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
4086         esac
4087     done
4088 }
4089
4090 icl_flags(){
4091     msvc_common_flags "$@"
4092     for flag; do
4093         case $flag in
4094             # Despite what Intel's documentation says -Wall, which is supported
4095             # on Windows, does enable remarks so disable them here.
4096             -Wall)                echo $flag -Qdiag-disable:remark ;;
4097             -std=c99)             echo -Qstd=c99 ;;
4098             -flto)                echo -ipo ;;
4099         esac
4100     done
4101 }
4102
4103 icc_flags(){
4104     for flag; do
4105         case $flag in
4106             -flto)                echo -ipo ;;
4107             *)                    echo $flag ;;
4108         esac
4109     done
4110 }
4111
4112 pgi_flags(){
4113     for flag; do
4114         case $flag in
4115             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
4116             -fomit-frame-pointer) echo -Mnoframe ;;
4117             -g)                   echo -gopt ;;
4118             *)                    echo $flag ;;
4119         esac
4120     done
4121 }
4122
4123 suncc_flags(){
4124     for flag; do
4125         case $flag in
4126             -march=*|-mcpu=*)
4127                 case "${flag#*=}" in
4128                     native)                   echo -xtarget=native       ;;
4129                     v9|niagara)               echo -xarch=sparc          ;;
4130                     ultrasparc)               echo -xarch=sparcvis       ;;
4131                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
4132                     i586|pentium)             echo -xchip=pentium        ;;
4133                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
4134                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
4135                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
4136                     pentium4*)          echo -xtarget=pentium4           ;;
4137                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
4138                     *-sse3)             echo -xarch=sse3                 ;;
4139                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
4140                     bonnell)                   echo -xarch=ssse3         ;;
4141                     corei7|nehalem)            echo -xtarget=nehalem     ;;
4142                     westmere)                  echo -xtarget=westmere    ;;
4143                     silvermont)                echo -xarch=sse4_2        ;;
4144                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
4145                     core-avx*|ivybridge|haswell|broadwell|skylake*|knl)
4146                                                echo -xarch=avx           ;;
4147                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
4148                     btver1)                    echo -xarch=amdsse4a      ;;
4149                     btver2|bdver*|znver*)      echo -xarch=avx           ;;
4150                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
4151                     k8|opteron|athlon64|athlon-fx)
4152                                                echo -xarch=sse2a         ;;
4153                     athlon*)                   echo -xarch=pentium_proa  ;;
4154                 esac
4155                 ;;
4156             -std=c99)             echo -xc99              ;;
4157             -fomit-frame-pointer) echo -xregs=frameptr    ;;
4158             -fPIC)                echo -KPIC -xcode=pic32 ;;
4159             -W*,*)                echo $flag              ;;
4160             -f*-*|-W*|-mimpure-text)                      ;;
4161             -shared)              echo -G                 ;;
4162             *)                    echo $flag              ;;
4163         esac
4164     done
4165 }
4166
4167 tms470_flags(){
4168     for flag; do
4169         case $flag in
4170             -march=*|-mcpu=*)
4171                 case "${flag#*=}" in
4172                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
4173                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
4174                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
4175                     armv6*|arm11*)          echo -mv=6   ;;
4176                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
4177                                             echo -mv=5e  ;;
4178                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
4179                 esac
4180                 ;;
4181             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
4182             -mfpu=vfp)      echo --float_support=vfpv2        ;;
4183             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
4184             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
4185             -msoft-float)   echo --float_support=vfplib       ;;
4186             -O[0-3]|-mf=*)  echo $flag                        ;;
4187             -g)             echo -g -mn                       ;;
4188             -pds=*)         echo $flag                        ;;
4189             -D*|-I*)        echo $flag                        ;;
4190             --gcc|--abi=*)  echo $flag                        ;;
4191             -me)            echo $flag                        ;;
4192         esac
4193     done
4194 }
4195
4196 probe_cc(){
4197     pfx=$1
4198     _cc=$2
4199     first=$3
4200
4201     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
4202     unset _ld_o _ldflags _ld_lib _ld_path
4203     unset _depflags _DEPCMD _DEPFLAGS
4204     _flags_filter=echo
4205
4206     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
4207         true # no-op to avoid reading stdin in following checks
4208     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
4209         _type=llvm_gcc
4210         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
4211         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
4212         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4213         _cflags_speed='-O3'
4214         _cflags_size='-Os'
4215     elif $_cc -v 2>&1 | grep -qi ^gcc; then
4216         _type=gcc
4217         gcc_version=$($_cc --version | head -n1)
4218         gcc_basever=$($_cc -dumpversion)
4219         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
4220         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
4221         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
4222         case $gcc_basever in
4223             2) ;;
4224             2.*) ;;
4225             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
4226         esac
4227         if [ "$first" = true ]; then
4228             case $gcc_basever in
4229                 4.2*)
4230                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
4231             esac
4232         fi
4233         _cflags_speed='-O3'
4234         _cflags_size='-Os'
4235     elif $_cc --version 2>/dev/null | grep -q ^icc; then
4236         _type=icc
4237         _ident=$($_cc --version | head -n1)
4238         _depflags='-MMD'
4239         _cflags_speed='-O3'
4240         _cflags_size='-Os'
4241         _cflags_noopt='-O1'
4242         _flags_filter=icc_flags
4243     elif $_cc -v 2>&1 | grep -q xlc; then
4244         _type=xlc
4245         _ident=$($_cc -qversion 2>/dev/null | head -n1)
4246         _cflags_speed='-O5'
4247         _cflags_size='-O5 -qcompact'
4248     elif $_cc -V 2>/dev/null | grep -q Compaq; then
4249         _type=ccc
4250         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
4251         _DEPFLAGS='-M'
4252         _cflags_speed='-fast'
4253         _cflags_size='-O1'
4254         _flags_filter=ccc_flags
4255     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
4256         test -d "$sysroot" || die "No valid sysroot specified."
4257         _type=armcc
4258         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
4259         armcc_conf="$PWD/armcc.conf"
4260         $_cc --arm_linux_configure                 \
4261              --arm_linux_config_file="$armcc_conf" \
4262              --configure_sysroot="$sysroot"        \
4263              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
4264              die "Error creating armcc configuration file."
4265         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
4266         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
4267         as_default="${cross_prefix}gcc"
4268         _depflags='-MMD'
4269         _cflags_speed='-O3'
4270         _cflags_size='-Os'
4271     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
4272         _type=tms470
4273         _ident=$($_cc -version | head -n1 | tr -s ' ')
4274         _flags='--gcc --abi=eabi -me'
4275         _cc_e='-ppl -fe=$@'
4276         _cc_o='-fe=$@'
4277         _depflags='-ppa -ppd=$(@:.o=.d)'
4278         _cflags_speed='-O3 -mf=5'
4279         _cflags_size='-O3 -mf=2'
4280         _flags_filter=tms470_flags
4281     elif $_cc -v 2>&1 | grep -q clang; then
4282         _type=clang
4283         _ident=$($_cc --version 2>/dev/null | head -n1)
4284         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4285         _cflags_speed='-O3'
4286         _cflags_size='-Oz'
4287     elif $_cc -V 2>&1 | grep -q Sun; then
4288         _type=suncc
4289         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
4290         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
4291         _DEPFLAGS='-xM1 -xc99'
4292         _ldflags='-std=c99'
4293         _cflags_speed='-O5'
4294         _cflags_size='-O5 -xspace'
4295         _flags_filter=suncc_flags
4296     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
4297         _type=pathscale
4298         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4299         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4300         _cflags_speed='-O2'
4301         _cflags_size='-Os'
4302         _flags_filter='filter_out -Wdisabled-optimization'
4303     elif $_cc -v 2>&1 | grep -q Open64; then
4304         _type=open64
4305         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4306         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4307         _cflags_speed='-O2'
4308         _cflags_size='-Os'
4309         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
4310     elif $_cc -V 2>&1 | grep -q Portland; then
4311         _type=pgi
4312         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
4313         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
4314         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
4315         _cflags_size="-O2 -Munroll=c:1 $opt_common"
4316         _cflags_noopt="-O"
4317         _flags_filter=pgi_flags
4318     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
4319         _type=armasm
4320         _ident=$($_cc | head -n1)
4321         # 4509: "This form of conditional instruction is deprecated"
4322         _flags="-nologo -ignore 4509"
4323         _flags_filter=armasm_flags
4324     elif $_cc 2>&1 | grep -q Intel; then
4325         _type=icl
4326         _ident=$($_cc 2>&1 | head -n1)
4327         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
4328         # Not only is O3 broken on 13.x+ but it is slower on all previous
4329         # versions (tested) as well.
4330         _cflags_speed="-O2"
4331         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
4332         if $_cc 2>&1 | grep -q Linker; then
4333             _ld_o='-out:$@'
4334         else
4335             _ld_o='-Fe$@'
4336         fi
4337         _cc_o='-Fo$@'
4338         _cc_e='-P'
4339         _flags_filter=icl_flags
4340         _ld_lib='lib%.a'
4341         _ld_path='-libpath:'
4342         # -Qdiag-error to make icl error when seeing certain unknown arguments
4343         _flags='-nologo -Qdiag-error:4044,10157'
4344         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
4345         # with MSVC which enables it by default.
4346         _cflags='-Qms0 -Qvec- -Qsimd- -GS -fp:precise'
4347         disable stripping
4348     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
4349         # lld can emulate multiple different linkers; in ms link.exe mode,
4350         # the -? parameter gives the help output which contains an identifyable
4351         # string, while it gives an error in other modes.
4352         _type=lld-link
4353         # The link.exe mode doesn't have a switch for getting the version,
4354         # but we can force it back to gnu mode and get the version from there.
4355         _ident=$($_cc -flavor gnu --version 2>/dev/null)
4356         _ld_o='-out:$@'
4357         _flags_filter=msvc_flags
4358         _ld_lib='lib%.a'
4359         _ld_path='-libpath:'
4360     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
4361         _type=msvc
4362         _ident=$($_cc 2>&1 | head -n1)
4363         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
4364         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
4365         _cflags_speed="-O2"
4366         _cflags_size="-O1"
4367         _cflags_noopt="-O1"
4368         if $_cc -nologo- 2>&1 | grep -q Linker; then
4369             _ld_o='-out:$@'
4370         else
4371             _ld_o='-Fe$@'
4372         fi
4373         _cc_o='-Fo$@'
4374         _cc_e='-P -Fi$@'
4375         _flags_filter=msvc_flags
4376         _ld_lib='lib%.a'
4377         _ld_path='-libpath:'
4378         _flags='-nologo'
4379         disable stripping
4380     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
4381         _type=cparser
4382         _ident=$($_cc --version | head -n1)
4383         _depflags='-MMD'
4384         _cflags_speed='-O4'
4385         _cflags_size='-O2'
4386         _flags_filter=cparser_flags
4387     fi
4388
4389     eval ${pfx}_type=\$_type
4390     eval ${pfx}_ident=\$_ident
4391 }
4392
4393 set_ccvars(){
4394     eval ${1}_C=\${_cc_c-\${${1}_C}}
4395     eval ${1}_E=\${_cc_e-\${${1}_E}}
4396     eval ${1}_O=\${_cc_o-\${${1}_O}}
4397
4398     if [ -n "$_depflags" ]; then
4399         eval ${1}_DEPFLAGS=\$_depflags
4400     else
4401         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
4402         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
4403         eval DEP${1}FLAGS=\$_flags
4404     fi
4405 }
4406
4407 probe_cc cc "$cc" "true"
4408 cflags_filter=$_flags_filter
4409 cflags_speed=$_cflags_speed
4410 cflags_size=$_cflags_size
4411 cflags_noopt=$_cflags_noopt
4412 add_cflags $_flags $_cflags
4413 cc_ldflags=$_ldflags
4414 set_ccvars CC
4415 set_ccvars CXX
4416
4417 probe_cc hostcc "$host_cc"
4418 host_cflags_filter=$_flags_filter
4419 host_cflags_speed=$_cflags_speed
4420 add_host_cflags  $_flags $_cflags
4421 set_ccvars HOSTCC
4422
4423 test -n "$cc_type" && enable $cc_type ||
4424     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4425
4426 : ${as_default:=$cc}
4427 : ${objcc_default:=$cc}
4428 : ${dep_cc_default:=$cc}
4429 : ${ld_default:=$cc}
4430 : ${host_ld_default:=$host_cc}
4431 set_default ar as objcc dep_cc ld ln_s host_ld windres
4432
4433 probe_cc as "$as"
4434 asflags_filter=$_flags_filter
4435 add_asflags $_flags $_cflags
4436 set_ccvars AS
4437
4438 probe_cc objcc "$objcc"
4439 objcflags_filter=$_flags_filter
4440 add_objcflags $_flags $_cflags
4441 set_ccvars OBJC
4442
4443 probe_cc ld "$ld"
4444 ldflags_filter=$_flags_filter
4445 add_ldflags $_flags $_ldflags
4446 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4447 LD_O=${_ld_o-$LD_O}
4448 LD_LIB=${_ld_lib-$LD_LIB}
4449 LD_PATH=${_ld_path-$LD_PATH}
4450
4451 probe_cc hostld "$host_ld"
4452 host_ldflags_filter=$_flags_filter
4453 add_host_ldflags $_flags $_ldflags
4454 HOSTLD_O=${_ld_o-$HOSTLD_O}
4455
4456 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4457     probe_cc depcc "$dep_cc"
4458     CCDEP=${_DEPCMD:-$DEPCMD}
4459     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4460     DEPCCFLAGS=$_flags
4461 fi
4462
4463 if $ar 2>&1 | grep -q Microsoft; then
4464     arflags="-nologo"
4465     ar_o='-out:$@'
4466 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
4467     arflags="rq"
4468     ar_o='$@'
4469 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
4470     arflags='-Xany -r -c'
4471     ar_o='$@'
4472 elif $ar 2>&1 | grep -q "\[D\] "; then
4473     arflags="rcD"
4474     ar_o='$@'
4475 else
4476     arflags="rc"
4477     ar_o='$@'
4478 fi
4479
4480 add_cflags $extra_cflags
4481 add_cxxflags $extra_cxxflags
4482 add_objcflags $extra_objcflags
4483 add_asflags $extra_cflags
4484
4485 if test -n "$sysroot"; then
4486     case "$cc_type" in
4487         gcc|llvm_gcc|clang)
4488             add_cppflags --sysroot="$sysroot"
4489             add_ldflags --sysroot="$sysroot"
4490 # On Darwin --sysroot may be ignored, -isysroot always affects headers and linking
4491             add_cppflags -isysroot "$sysroot"
4492             add_ldflags -isysroot "$sysroot"
4493         ;;
4494         tms470)
4495             add_cppflags -I"$sysinclude"
4496             add_ldflags  --sysroot="$sysroot"
4497         ;;
4498     esac
4499 fi
4500
4501 if test "$cpu" = host; then
4502     enabled cross_compile &&
4503         die "--cpu=host makes no sense when cross-compiling."
4504
4505     case "$cc_type" in
4506         gcc|llvm_gcc)
4507             check_native(){
4508                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4509                 sed -n "/cc1.*$1=/{
4510                             s/.*$1=\\([^ ]*\\).*/\\1/
4511                             p
4512                             q
4513                         }" $TMPE
4514             }
4515             cpu=$(check_native -march || check_native -mcpu)
4516         ;;
4517         clang)
4518             check_native(){
4519                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4520                 sed -n "/cc1.*-target-cpu /{
4521                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4522                             p
4523                             q
4524                         }" $TMPE
4525             }
4526             cpu=$(check_native -march)
4527         ;;
4528     esac
4529
4530     test "${cpu:-host}" = host &&
4531         die "--cpu=host not supported with compiler $cc"
4532 fi
4533
4534 # Deal with common $arch aliases
4535 case "$arch" in
4536     aarch64|arm64)
4537         arch="aarch64"
4538     ;;
4539     arm*|iPad*|iPhone*)
4540         arch="arm"
4541     ;;
4542     mips*|IP*)
4543         case "$arch" in
4544         *el)
4545             add_cppflags -EL
4546             add_ldflags -EL
4547         ;;
4548         *eb)
4549             add_cppflags -EB
4550             add_ldflags -EB
4551         ;;
4552         esac
4553         arch="mips"
4554     ;;
4555     parisc*|hppa*)
4556         arch="parisc"
4557     ;;
4558     "Power Macintosh"|ppc*|powerpc*)
4559         arch="ppc"
4560     ;;
4561     s390|s390x)
4562         arch="s390"
4563     ;;
4564     sh4|sh)
4565         arch="sh4"
4566     ;;
4567     sun4*|sparc*)
4568         arch="sparc"
4569     ;;
4570     tilegx|tile-gx)
4571         arch="tilegx"
4572     ;;
4573     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4574         arch="x86"
4575     ;;
4576 esac
4577
4578 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4579 enable $arch
4580
4581 # Add processor-specific flags
4582 if enabled aarch64; then
4583
4584     case $cpu in
4585         armv*)
4586             cpuflags="-march=$cpu"
4587         ;;
4588         *)
4589             cpuflags="-mcpu=$cpu"
4590         ;;
4591     esac
4592
4593 elif enabled alpha; then
4594
4595     cpuflags="-mcpu=$cpu"
4596
4597 elif enabled arm; then
4598
4599     check_arm_arch() {
4600         check_cpp_condition stddef.h \
4601             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4602             $cpuflags
4603     }
4604
4605     probe_arm_arch() {
4606         if   check_arm_arch 4;        then echo armv4
4607         elif check_arm_arch 4T;       then echo armv4t
4608         elif check_arm_arch 5;        then echo armv5
4609         elif check_arm_arch 5E;       then echo armv5e
4610         elif check_arm_arch 5T;       then echo armv5t
4611         elif check_arm_arch 5TE;      then echo armv5te
4612         elif check_arm_arch 5TEJ;     then echo armv5te
4613         elif check_arm_arch 6;        then echo armv6
4614         elif check_arm_arch 6J;       then echo armv6j
4615         elif check_arm_arch 6K;       then echo armv6k
4616         elif check_arm_arch 6Z;       then echo armv6z
4617         elif check_arm_arch 6ZK;      then echo armv6zk
4618         elif check_arm_arch 6T2;      then echo armv6t2
4619         elif check_arm_arch 7;        then echo armv7
4620         elif check_arm_arch 7A  7_A;  then echo armv7-a
4621         elif check_arm_arch 7S;       then echo armv7-a
4622         elif check_arm_arch 7R  7_R;  then echo armv7-r
4623         elif check_arm_arch 7M  7_M;  then echo armv7-m
4624         elif check_arm_arch 7EM 7E_M; then echo armv7-m
4625         elif check_arm_arch 8A  8_A;  then echo armv8-a
4626         fi
4627     }
4628
4629     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4630
4631     case $cpu in
4632         armv*)
4633             cpuflags="-march=$cpu"
4634             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4635         ;;
4636         *)
4637             cpuflags="-mcpu=$cpu"
4638             case $cpu in
4639                 cortex-a*)                               subarch=armv7a  ;;
4640                 cortex-r*)                               subarch=armv7r  ;;
4641                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4642                 arm11*)                                  subarch=armv6   ;;
4643                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4644                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4645                 *)                             subarch=$(probe_arm_arch) ;;
4646             esac
4647         ;;
4648     esac
4649
4650     case "$subarch" in
4651         armv5t*)    enable fast_clz                ;;
4652         armv[6-8]*)
4653             enable fast_clz
4654             disabled fast_unaligned || enable fast_unaligned
4655             ;;
4656     esac
4657
4658 elif enabled avr32; then
4659
4660     case $cpu in
4661         ap7[02]0[0-2])
4662             subarch="avr32_ap"
4663             cpuflags="-mpart=$cpu"
4664         ;;
4665         ap)
4666             subarch="avr32_ap"
4667             cpuflags="-march=$cpu"
4668         ;;
4669         uc3[ab]*)
4670             subarch="avr32_uc"
4671             cpuflags="-mcpu=$cpu"
4672         ;;
4673         uc)
4674             subarch="avr32_uc"
4675             cpuflags="-march=$cpu"
4676         ;;
4677     esac
4678
4679 elif enabled bfin; then
4680
4681     cpuflags="-mcpu=$cpu"
4682
4683 elif enabled mips; then
4684
4685     cpuflags="-march=$cpu"
4686
4687     if [ "$cpu" != "generic" ]; then
4688         disable mips32r2
4689         disable mips32r5
4690         disable mips64r2
4691         disable mips32r6
4692         disable mips64r6
4693         disable loongson2
4694         disable loongson3
4695
4696         case $cpu in
4697             24kc|24kf*|24kec|34kc|1004kc|24kef*|34kf*|1004kf*|74kc|74kf)
4698                 enable mips32r2
4699                 disable msa
4700             ;;
4701             p5600|i6400|p6600)
4702                 disable mipsdsp
4703                 disable mipsdspr2
4704             ;;
4705             loongson*)
4706                 enable loongson2
4707                 enable loongson3
4708                 enable local_aligned_8 local_aligned_16 local_aligned_32
4709                 enable simd_align_16
4710                 enable fast_64bit
4711                 enable fast_clz
4712                 enable fast_cmov
4713                 enable fast_unaligned
4714                 disable aligned_stack
4715                 disable mipsfpu
4716                 disable mipsdsp
4717                 disable mipsdspr2
4718                 case $cpu in
4719                     loongson3*)
4720                         cpuflags="-march=loongson3a -mhard-float -fno-expensive-optimizations"
4721                     ;;
4722                     loongson2e)
4723                         cpuflags="-march=loongson2e -mhard-float -fno-expensive-optimizations"
4724                     ;;
4725                     loongson2f)
4726                         cpuflags="-march=loongson2f -mhard-float -fno-expensive-optimizations"
4727                     ;;
4728                 esac
4729             ;;
4730             *)
4731                 # Unknown CPU. Disable everything.
4732                 warn "unknown CPU. Disabling all MIPS optimizations."
4733                 disable mipsfpu
4734                 disable mipsdsp
4735                 disable mipsdspr2
4736                 disable msa
4737                 disable mmi
4738             ;;
4739         esac
4740
4741         case $cpu in
4742             24kc)
4743                 disable mipsfpu
4744                 disable mipsdsp
4745                 disable mipsdspr2
4746             ;;
4747             24kf*)
4748                 disable mipsdsp
4749                 disable mipsdspr2
4750             ;;
4751             24kec|34kc|1004kc)
4752                 disable mipsfpu
4753                 disable mipsdspr2
4754             ;;
4755             24kef*|34kf*|1004kf*)
4756                 disable mipsdspr2
4757             ;;
4758             74kc)
4759                 disable mipsfpu
4760             ;;
4761             p5600)
4762                 enable mips32r5
4763                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
4764             ;;
4765             i6400)
4766                 enable mips64r6
4767                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4768             ;;
4769             p6600)
4770                 enable mips64r6
4771                 check_cflags "-mtune=p6600 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4772             ;;
4773         esac
4774     else
4775         # We do not disable anything. Is up to the user to disable the unwanted features.
4776         warn 'generic cpu selected'
4777     fi
4778
4779 elif enabled ppc; then
4780
4781     disable ldbrx
4782
4783     case $(tolower $cpu) in
4784         601|ppc601|powerpc601)
4785             cpuflags="-mcpu=601"
4786             disable altivec
4787         ;;
4788         603*|ppc603*|powerpc603*)
4789             cpuflags="-mcpu=603"
4790             disable altivec
4791         ;;
4792         604*|ppc604*|powerpc604*)
4793             cpuflags="-mcpu=604"
4794             disable altivec
4795         ;;
4796         g3|75*|ppc75*|powerpc75*)
4797             cpuflags="-mcpu=750"
4798             disable altivec
4799         ;;
4800         g4|745*|ppc745*|powerpc745*)
4801             cpuflags="-mcpu=7450"
4802             disable vsx
4803         ;;
4804         74*|ppc74*|powerpc74*)
4805             cpuflags="-mcpu=7400"
4806             disable vsx
4807         ;;
4808         g5|970|ppc970|powerpc970)
4809             cpuflags="-mcpu=970"
4810             disable vsx
4811         ;;
4812         power[3-6]*)
4813             cpuflags="-mcpu=$cpu"
4814             disable vsx
4815         ;;
4816         power[7-8]*)
4817             cpuflags="-mcpu=$cpu"
4818         ;;
4819         cell)
4820             cpuflags="-mcpu=cell"
4821             enable ldbrx
4822             disable vsx
4823         ;;
4824         e500mc)
4825             cpuflags="-mcpu=e500mc"
4826             disable altivec
4827         ;;
4828         e500v2)
4829             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
4830             disable altivec
4831             disable dcbzl
4832         ;;
4833         e500)
4834             cpuflags="-mcpu=8540 -mhard-float"
4835             disable altivec
4836             disable dcbzl
4837         ;;
4838     esac
4839
4840 elif enabled sparc; then
4841
4842     case $cpu in
4843         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
4844             cpuflags="-mcpu=$cpu"
4845         ;;
4846         ultrasparc*|niagara[234])
4847             cpuflags="-mcpu=$cpu"
4848         ;;
4849     esac
4850
4851 elif enabled x86; then
4852
4853     case $cpu in
4854         i[345]86|pentium)
4855             cpuflags="-march=$cpu"
4856             disable i686
4857             disable mmx
4858         ;;
4859         # targets that do NOT support nopl and conditional mov (cmov)
4860         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
4861             cpuflags="-march=$cpu"
4862             disable i686
4863         ;;
4864         # targets that do support nopl and conditional mov (cmov)
4865         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
4866         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|skylake*|knl\
4867         |amdfam10|barcelona|b[dt]ver*|znver*)
4868             cpuflags="-march=$cpu"
4869             enable i686
4870             enable fast_cmov
4871         ;;
4872         # targets that do support conditional mov but on which it's slow
4873         pentium4|pentium4m|prescott|nocona)