9f95d58c6ee081e88295f1cb329e16b1f1525da3
[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     dirac_parse
2154     dvprofile
2155     exif
2156     faandct
2157     faanidct
2158     fdctdsp
2159     flacdsp
2160     fmtconvert
2161     frame_thread_encoder
2162     g722dsp
2163     golomb
2164     gplv3
2165     h263dsp
2166     h264chroma
2167     h264dsp
2168     h264parse
2169     h264pred
2170     h264qpel
2171     hevcparse
2172     hpeldsp
2173     huffman
2174     huffyuvdsp
2175     huffyuvencdsp
2176     idctdsp
2177     iirfilter
2178     mdct15
2179     intrax8
2180     iso_media
2181     ividsp
2182     jpegtables
2183     lgplv3
2184     libx262
2185     llauddsp
2186     llviddsp
2187     llvidencdsp
2188     lpc
2189     lzf
2190     me_cmp
2191     mpeg_er
2192     mpegaudio
2193     mpegaudiodsp
2194     mpegaudioheader
2195     mpegvideo
2196     mpegvideoenc
2197     mss34dsp
2198     pixblockdsp
2199     qpeldsp
2200     qsv
2201     qsvdec
2202     qsvenc
2203     rangecoder
2204     riffdec
2205     riffenc
2206     rtpdec
2207     rtpenc_chain
2208     rv34dsp
2209     sinewin
2210     snappy
2211     srtp
2212     startcode
2213     texturedsp
2214     texturedspenc
2215     tpeldsp
2216     vaapi_1
2217     vaapi_encode
2218     vc1dsp
2219     videodsp
2220     vp3dsp
2221     vp56dsp
2222     vp8dsp
2223     wma_freqs
2224     wmv2dsp
2225 "
2226
2227 CMDLINE_SELECT="
2228     $ARCH_EXT_LIST
2229     $CONFIG_LIST
2230     $HAVE_LIST_CMDLINE
2231     $THREADS_LIST
2232     asm
2233     cross_compile
2234     debug
2235     extra_warnings
2236     logging
2237     lto
2238     optimizations
2239     rpath
2240     stripping
2241 "
2242
2243 PATHS_LIST="
2244     bindir
2245     datadir
2246     docdir
2247     incdir
2248     libdir
2249     mandir
2250     pkgconfigdir
2251     prefix
2252     shlibdir
2253     install_name_dir
2254 "
2255
2256 CMDLINE_SET="
2257     $PATHS_LIST
2258     ar
2259     arch
2260     as
2261     assert_level
2262     build_suffix
2263     cc
2264     objcc
2265     cpu
2266     cross_prefix
2267     custom_allocator
2268     cxx
2269     dep_cc
2270     doxygen
2271     env
2272     extra_version
2273     gas
2274     host_cc
2275     host_cflags
2276     host_extralibs
2277     host_ld
2278     host_ldflags
2279     host_os
2280     ignore_tests
2281     install
2282     ld
2283     ln_s
2284     logfile
2285     malloc_prefix
2286     nm
2287     optflags
2288     nvccflags
2289     pkg_config
2290     pkg_config_flags
2291     progs_suffix
2292     random_seed
2293     ranlib
2294     samples
2295     strip
2296     sws_max_filter_size
2297     sysinclude
2298     sysroot
2299     target_exec
2300     target_os
2301     target_path
2302     target_samples
2303     tempprefix
2304     toolchain
2305     valgrind
2306     x86asmexe
2307 "
2308
2309 CMDLINE_APPEND="
2310     extra_cflags
2311     extra_cxxflags
2312     extra_objcflags
2313     host_cppflags
2314 "
2315
2316 # code dependency declarations
2317
2318 # architecture extensions
2319
2320 armv5te_deps="arm"
2321 armv6_deps="arm"
2322 armv6t2_deps="arm"
2323 armv8_deps="aarch64"
2324 neon_deps_any="aarch64 arm"
2325 intrinsics_neon_deps="neon"
2326 vfp_deps_any="aarch64 arm"
2327 vfpv3_deps="vfp"
2328 setend_deps="arm"
2329
2330 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2331
2332 loongson2_deps="mips"
2333 loongson3_deps="mips"
2334 mipsfpu_deps="mips"
2335 mipsdsp_deps="mips"
2336 mipsdspr2_deps="mips"
2337 mips32r2_deps="mips"
2338 mips32r5_deps="mips"
2339 mips32r6_deps="mips"
2340 mips64r2_deps="mips"
2341 mips64r6_deps="mips"
2342 msa_deps="mipsfpu"
2343 mmi_deps="mips"
2344
2345 altivec_deps="ppc"
2346 dcbzl_deps="ppc"
2347 ldbrx_deps="ppc"
2348 ppc4xx_deps="ppc"
2349 vsx_deps="altivec"
2350 power8_deps="vsx"
2351
2352 cpunop_deps="i686"
2353 x86_64_select="i686"
2354 x86_64_suggest="fast_cmov"
2355
2356 amd3dnow_deps="mmx"
2357 amd3dnowext_deps="amd3dnow"
2358 i686_deps="x86"
2359 mmx_deps="x86"
2360 mmxext_deps="mmx"
2361 sse_deps="mmxext"
2362 sse2_deps="sse"
2363 sse3_deps="sse2"
2364 ssse3_deps="sse3"
2365 sse4_deps="ssse3"
2366 sse42_deps="sse4"
2367 aesni_deps="sse42"
2368 avx_deps="sse42"
2369 xop_deps="avx"
2370 fma3_deps="avx"
2371 fma4_deps="avx"
2372 avx2_deps="avx"
2373
2374 mmx_external_deps="x86asm"
2375 mmx_inline_deps="inline_asm"
2376 mmx_suggest="mmx_external mmx_inline"
2377
2378 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2379     eval dep=\$${ext}_deps
2380     eval ${ext}_external_deps='"${dep}_external"'
2381     eval ${ext}_inline_deps='"${dep}_inline"'
2382     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2383 done
2384
2385 aligned_stack_if_any="aarch64 ppc x86"
2386 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2387 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2388 fast_unaligned_if_any="aarch64 ppc x86"
2389 simd_align_16_if_any="altivec neon sse"
2390 simd_align_32_if_any="avx"
2391
2392 # system capabilities
2393 symver_if_any="symver_asm_label symver_gnu_asm"
2394 valgrind_backtrace_conflict="optimizations"
2395 valgrind_backtrace_deps="valgrind_valgrind_h"
2396
2397 # threading support
2398 atomics_gcc_if="sync_val_compare_and_swap"
2399 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2400 atomics_win32_if="MemoryBarrier"
2401 atomics_native_if_any="$ATOMICS_LIST"
2402 w32threads_deps="atomics_native"
2403 threads_if_any="$THREADS_LIST"
2404
2405 # subsystems
2406 dct_select="rdft"
2407 dirac_parse_select="golomb"
2408 error_resilience_select="me_cmp"
2409 faandct_deps="faan fdctdsp"
2410 faanidct_deps="faan idctdsp"
2411 h264dsp_select="startcode"
2412 hevcparse_select="golomb"
2413 frame_thread_encoder_deps="encoders threads"
2414 intrax8_select="blockdsp idctdsp"
2415 mdct_select="fft"
2416 mdct15_select="fft"
2417 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2418 mpeg_er_select="error_resilience"
2419 mpegaudio_select="mpegaudiodsp mpegaudioheader"
2420 mpegaudiodsp_select="dct"
2421 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2422 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
2423 vc1dsp_select="h264chroma qpeldsp startcode"
2424 rdft_select="fft"
2425
2426 # decoders / encoders
2427 aac_decoder_select="mdct15 mdct sinewin"
2428 aac_fixed_decoder_select="mdct sinewin"
2429 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2430 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2431 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2432 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2433 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2434 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2435 adpcm_g722_decoder_select="g722dsp"
2436 adpcm_g722_encoder_select="g722dsp"
2437 aic_decoder_select="golomb idctdsp"
2438 alac_encoder_select="lpc"
2439 als_decoder_select="bswapdsp"
2440 amrnb_decoder_select="lsp"
2441 amrwb_decoder_select="lsp"
2442 amv_decoder_select="sp5x_decoder exif"
2443 amv_encoder_select="aandcttables jpegtables mpegvideoenc"
2444 ape_decoder_select="bswapdsp llauddsp"
2445 apng_decoder_select="zlib"
2446 apng_encoder_select="llvidencdsp zlib"
2447 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2448 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2449 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2450 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2451 atrac1_decoder_select="mdct sinewin"
2452 atrac3_decoder_select="mdct"
2453 atrac3p_decoder_select="mdct sinewin"
2454 avrn_decoder_select="exif jpegtables"
2455 bink_decoder_select="blockdsp hpeldsp"
2456 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2457 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2458 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2459 clearvideo_decoder_select="idctdsp"
2460 cllc_decoder_select="bswapdsp"
2461 comfortnoise_encoder_select="lpc"
2462 cook_decoder_select="audiodsp mdct sinewin"
2463 cscd_decoder_select="lzo"
2464 cscd_decoder_suggest="zlib"
2465 dca_decoder_select="mdct"
2466 dds_decoder_select="texturedsp"
2467 dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
2468 dnxhd_decoder_select="blockdsp idctdsp"
2469 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2470 dolby_e_decoder_select="mdct"
2471 dvvideo_decoder_select="dvprofile idctdsp"
2472 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2473 dxa_decoder_select="zlib"
2474 dxv_decoder_select="lzf texturedsp"
2475 eac3_decoder_select="ac3_decoder"
2476 eac3_encoder_select="ac3_encoder"
2477 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2478 eatgq_decoder_select="aandcttables"
2479 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2480 exr_decoder_select="zlib"
2481 ffv1_decoder_select="rangecoder"
2482 ffv1_encoder_select="rangecoder"
2483 ffvhuff_decoder_select="huffyuv_decoder"
2484 ffvhuff_encoder_select="huffyuv_encoder"
2485 fic_decoder_select="golomb"
2486 flac_decoder_select="flacdsp"
2487 flac_encoder_select="bswapdsp flacdsp lpc"
2488 flashsv2_decoder_select="zlib"
2489 flashsv2_encoder_select="zlib"
2490 flashsv_decoder_select="zlib"
2491 flashsv_encoder_select="zlib"
2492 flv_decoder_select="h263_decoder"
2493 flv_encoder_select="h263_encoder"
2494 fourxm_decoder_select="blockdsp bswapdsp"
2495 fraps_decoder_select="bswapdsp huffman"
2496 g2m_decoder_select="blockdsp idctdsp jpegtables zlib"
2497 g729_decoder_select="audiodsp"
2498 h261_decoder_select="mpegvideo"
2499 h261_encoder_select="aandcttables mpegvideoenc"
2500 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2501 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2502 h263i_decoder_select="h263_decoder"
2503 h263p_decoder_select="h263_decoder"
2504 h263p_encoder_select="h263_encoder"
2505 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
2506 h264_decoder_suggest="error_resilience"
2507 hap_decoder_select="snappy texturedsp"
2508 hap_encoder_deps="libsnappy"
2509 hap_encoder_select="texturedspenc"
2510 hevc_decoder_select="bswapdsp cabac golomb hevcparse videodsp"
2511 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2512 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llvidencdsp"
2513 iac_decoder_select="imc_decoder"
2514 imc_decoder_select="bswapdsp fft mdct sinewin"
2515 indeo3_decoder_select="hpeldsp"
2516 indeo4_decoder_select="ividsp"
2517 indeo5_decoder_select="ividsp"
2518 interplay_video_decoder_select="hpeldsp"
2519 jpegls_decoder_select="mjpeg_decoder"
2520 jv_decoder_select="blockdsp"
2521 lagarith_decoder_select="llviddsp"
2522 ljpeg_encoder_select="aandcttables idctdsp jpegtables mpegvideoenc"
2523 magicyuv_decoder_select="llviddsp"
2524 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2525 metasound_decoder_select="lsp mdct sinewin"
2526 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2527 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2528 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2529 mjpegb_decoder_select="mjpeg_decoder"
2530 mlp_decoder_select="mlp_parser"
2531 mlp_encoder_select="lpc"
2532 motionpixels_decoder_select="bswapdsp"
2533 mp1_decoder_select="mpegaudio"
2534 mp1float_decoder_select="mpegaudio"
2535 mp2_decoder_select="mpegaudio"
2536 mp2float_decoder_select="mpegaudio"
2537 mp3_decoder_select="mpegaudio"
2538 mp3adu_decoder_select="mpegaudio"
2539 mp3adufloat_decoder_select="mpegaudio"
2540 mp3float_decoder_select="mpegaudio"
2541 mp3on4_decoder_select="mpegaudio"
2542 mp3on4float_decoder_select="mpegaudio"
2543 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2544 mpc8_decoder_select="mpegaudiodsp"
2545 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
2546 mpeg_xvmc_decoder_select="mpeg2video_decoder"
2547 mpegvideo_decoder_select="mpegvideo"
2548 mpeg1video_decoder_select="mpegvideo"
2549 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2550 mpeg2video_decoder_select="mpegvideo"
2551 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2552 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2553 mpeg4_encoder_select="h263_encoder"
2554 msa1_decoder_select="mss34dsp"
2555 mscc_decoder_select="zlib"
2556 msmpeg4v1_decoder_select="h263_decoder"
2557 msmpeg4v2_decoder_select="h263_decoder"
2558 msmpeg4v2_encoder_select="h263_encoder"
2559 msmpeg4v3_decoder_select="h263_decoder"
2560 msmpeg4v3_encoder_select="h263_encoder"
2561 mss2_decoder_select="mpegvideo qpeldsp vc1_decoder"
2562 mts2_decoder_select="mss34dsp"
2563 mxpeg_decoder_select="mjpeg_decoder"
2564 nellymoser_decoder_select="mdct sinewin"
2565 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2566 nuv_decoder_select="idctdsp lzo"
2567 on2avc_decoder_select="mdct"
2568 opus_decoder_deps="swresample"
2569 opus_decoder_select="mdct15"
2570 opus_encoder_select="audio_frame_queue mdct15"
2571 png_decoder_select="zlib"
2572 png_encoder_select="llvidencdsp zlib"
2573 prores_decoder_select="blockdsp idctdsp"
2574 prores_encoder_select="fdctdsp"
2575 qcelp_decoder_select="lsp"
2576 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2577 ra_144_decoder_select="audiodsp"
2578 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2579 ralf_decoder_select="golomb"
2580 rawvideo_decoder_select="bswapdsp"
2581 rscc_decoder_select="zlib"
2582 rtjpeg_decoder_select="me_cmp"
2583 rv10_decoder_select="h263_decoder"
2584 rv10_encoder_select="h263_encoder"
2585 rv20_decoder_select="h263_decoder"
2586 rv20_encoder_select="h263_encoder"
2587 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2588 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2589 screenpresso_decoder_select="zlib"
2590 shorten_decoder_select="bswapdsp"
2591 sipr_decoder_select="lsp"
2592 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2593 snow_encoder_select="aandcttables dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2594 sonic_decoder_select="golomb rangecoder"
2595 sonic_encoder_select="golomb rangecoder"
2596 sonic_ls_encoder_select="golomb rangecoder"
2597 sp5x_decoder_select="mjpeg_decoder"
2598 srgc_decoder_select="zlib"
2599 svq1_decoder_select="hpeldsp"
2600 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2601 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2602 svq3_decoder_suggest="zlib"
2603 tak_decoder_select="audiodsp"
2604 tdsc_decoder_select="zlib mjpeg_decoder"
2605 theora_decoder_select="vp3_decoder"
2606 thp_decoder_select="mjpeg_decoder"
2607 tiff_decoder_suggest="zlib lzma"
2608 tiff_encoder_suggest="zlib"
2609 truehd_decoder_select="mlp_parser"
2610 truehd_encoder_select="lpc"
2611 truemotion2_decoder_select="bswapdsp"
2612 truespeech_decoder_select="bswapdsp"
2613 tscc_decoder_select="zlib"
2614 twinvq_decoder_select="mdct lsp sinewin"
2615 txd_decoder_select="texturedsp"
2616 utvideo_decoder_select="bswapdsp llviddsp"
2617 utvideo_encoder_select="bswapdsp huffman llvidencdsp"
2618 vble_decoder_select="llviddsp"
2619 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 mpegvideo vc1dsp"
2620 vc1_qsv_decoder_deps="libmfx"
2621 vc1_qsv_decoder_select="qsvdec vc1_qsv_hwaccel vc1_parser"
2622 vc1image_decoder_select="vc1_decoder"
2623 vorbis_decoder_select="mdct"
2624 vorbis_encoder_select="mdct"
2625 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2626 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2627 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2628 vp6a_decoder_select="vp6_decoder"
2629 vp6f_decoder_select="vp6_decoder"
2630 vp7_decoder_select="h264pred videodsp vp8dsp"
2631 vp8_decoder_select="h264pred videodsp vp8dsp"
2632 vp9_decoder_select="videodsp vp9_parser"
2633 webp_decoder_select="vp8_decoder exif"
2634 wmalossless_decoder_select="llauddsp"
2635 wmapro_decoder_select="mdct sinewin wma_freqs"
2636 wmav1_decoder_select="mdct sinewin wma_freqs"
2637 wmav1_encoder_select="mdct sinewin wma_freqs"
2638 wmav2_decoder_select="mdct sinewin wma_freqs"
2639 wmav2_encoder_select="mdct sinewin wma_freqs"
2640 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2641 wmv1_decoder_select="h263_decoder"
2642 wmv1_encoder_select="h263_encoder"
2643 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2644 wmv2_encoder_select="h263_encoder wmv2dsp"
2645 wmv3_decoder_select="vc1_decoder"
2646 wmv3image_decoder_select="wmv3_decoder"
2647 xma1_decoder_select="wmapro_decoder"
2648 xma2_decoder_select="wmapro_decoder"
2649 zerocodec_decoder_select="zlib"
2650 zlib_decoder_select="zlib"
2651 zlib_encoder_select="zlib"
2652 zmbv_decoder_select="zlib"
2653 zmbv_encoder_select="zlib"
2654
2655 # hardware accelerators
2656 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2657 cuda_deps_any="libdl LoadLibrary"
2658 cuvid_deps="cuda"
2659 d3d11va_deps="d3d11_h dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2660 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode ole32 user32"
2661 vda_framework_deps="VideoDecodeAcceleration_VDADecoder_h blocks_extension"
2662 vda_framework_extralibs="-framework VideoDecodeAcceleration"
2663 vda_deps="vda_framework pthreads corefoundation"
2664 vda_extralibs="-framework QuartzCore"
2665 videotoolbox_hwaccel_deps="videotoolbox pthreads"
2666 videotoolbox_hwaccel_extralibs="-framework QuartzCore"
2667 xvmc_deps="X11_extensions_XvMClib_h"
2668
2669 h263_vaapi_hwaccel_deps="vaapi"
2670 h263_vaapi_hwaccel_select="h263_decoder"
2671 h263_videotoolbox_hwaccel_deps="videotoolbox"
2672 h263_videotoolbox_hwaccel_select="h263_decoder"
2673 h264_cuvid_hwaccel_deps="cuda cuvid"
2674 h264_cuvid_hwaccel_select="h264_cuvid_decoder"
2675 h264_d3d11va_hwaccel_deps="d3d11va"
2676 h264_d3d11va_hwaccel_select="h264_decoder"
2677 h264_d3d11va2_hwaccel_deps="d3d11va"
2678 h264_d3d11va2_hwaccel_select="h264_decoder"
2679 h264_dxva2_hwaccel_deps="dxva2"
2680 h264_dxva2_hwaccel_select="h264_decoder"
2681 h264_mediacodec_hwaccel_deps="mediacodec"
2682 h264_mmal_hwaccel_deps="mmal"
2683 h264_qsv_hwaccel_deps="libmfx"
2684 h264_vaapi_hwaccel_deps="vaapi"
2685 h264_vaapi_hwaccel_select="h264_decoder"
2686 h264_vda_hwaccel_deps="vda"
2687 h264_vda_hwaccel_select="h264_decoder"
2688 h264_vda_old_hwaccel_deps="vda"
2689 h264_vda_old_hwaccel_select="h264_decoder"
2690 h264_vdpau_hwaccel_deps="vdpau"
2691 h264_vdpau_hwaccel_select="h264_decoder"
2692 h264_videotoolbox_hwaccel_deps="videotoolbox"
2693 h264_videotoolbox_hwaccel_select="h264_decoder"
2694 hevc_cuvid_hwaccel_deps="cuda cuvid"
2695 hevc_cuvid_hwaccel_select="hevc_cuvid_decoder"
2696 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2697 hevc_d3d11va_hwaccel_select="hevc_decoder"
2698 hevc_mediacodec_hwaccel_deps="mediacodec"
2699 hevc_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2700 hevc_d3d11va2_hwaccel_select="hevc_decoder"
2701 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2702 hevc_dxva2_hwaccel_select="hevc_decoder"
2703 hevc_qsv_hwaccel_deps="libmfx"
2704 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2705 hevc_vaapi_hwaccel_select="hevc_decoder"
2706 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2707 hevc_vdpau_hwaccel_select="hevc_decoder"
2708 hevc_videotoolbox_hwaccel_deps="videotoolbox"
2709 hevc_videotoolbox_hwaccel_select="hevc_decoder"
2710 mjpeg_cuvid_hwaccel_deps="cuda cuvid"
2711 mjpeg_cuvid_hwaccel_select="mjpeg_cuvid_decoder"
2712 mpeg_xvmc_hwaccel_deps="xvmc"
2713 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2714 mpeg1_cuvid_hwaccel_deps="cuda cuvid"
2715 mpeg1_cuvid_hwaccel_select="mpeg1_cuvid_decoder"
2716 mpeg1_vdpau_hwaccel_deps="vdpau"
2717 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2718 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2719 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2720 mpeg1_xvmc_hwaccel_deps="xvmc"
2721 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2722 mpeg2_cuvid_hwaccel_deps="cuda cuvid"
2723 mpeg2_cuvid_hwaccel_select="mpeg2_cuvid_decoder"
2724 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2725 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2726 mpeg2_d3d11va2_hwaccel_deps="d3d11va"
2727 mpeg2_d3d11va2_hwaccel_select="mpeg2video_decoder"
2728 mpeg2_dxva2_hwaccel_deps="dxva2"
2729 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2730 mpeg2_mediacodec_hwaccel_deps="mediacodec"
2731 mpeg2_mmal_hwaccel_deps="mmal"
2732 mpeg2_qsv_hwaccel_deps="libmfx"
2733 mpeg2_qsv_hwaccel_select="qsvdec_mpeg2"
2734 mpeg2_vaapi_hwaccel_deps="vaapi"
2735 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2736 mpeg2_vdpau_hwaccel_deps="vdpau"
2737 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2738 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2739 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2740 mpeg2_xvmc_hwaccel_deps="xvmc"
2741 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2742 mpeg4_cuvid_hwaccel_deps="cuda cuvid"
2743 mpeg4_cuvid_hwaccel_select="mpeg4_cuvid_decoder"
2744 mpeg4_mediacodec_hwaccel_deps="mediacodec"
2745 mpeg4_mmal_hwaccel_deps="mmal"
2746 mpeg4_vaapi_hwaccel_deps="vaapi"
2747 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2748 mpeg4_vdpau_hwaccel_deps="vdpau"
2749 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2750 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2751 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2752 vc1_cuvid_hwaccel_deps="cuda cuvid"
2753 vc1_cuvid_hwaccel_select="vc1_cuvid_decoder"
2754 vc1_d3d11va_hwaccel_deps="d3d11va"
2755 vc1_d3d11va_hwaccel_select="vc1_decoder"
2756 vc1_d3d11va2_hwaccel_deps="d3d11va"
2757 vc1_d3d11va2_hwaccel_select="vc1_decoder"
2758 vc1_dxva2_hwaccel_deps="dxva2"
2759 vc1_dxva2_hwaccel_select="vc1_decoder"
2760 vc1_mmal_hwaccel_deps="mmal"
2761 vc1_qsv_hwaccel_deps="libmfx"
2762 vc1_qsv_hwaccel_select="qsvdec_vc1"
2763 vc1_vaapi_hwaccel_deps="vaapi"
2764 vc1_vaapi_hwaccel_select="vc1_decoder"
2765 vc1_vdpau_hwaccel_deps="vdpau"
2766 vc1_vdpau_hwaccel_select="vc1_decoder"
2767 vp8_cuvid_hwaccel_deps="cuda cuvid"
2768 vp8_cuvid_hwaccel_select="vp8_cuvid_decoder"
2769 vp9_cuvid_hwaccel_deps="cuda cuvid"
2770 vp9_cuvid_hwaccel_select="vp9_cuvid_decoder"
2771 vp8_mediacodec_hwaccel_deps="mediacodec"
2772 vp8_qsv_hwaccel_deps="libmfx"
2773 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2774 vp9_d3d11va_hwaccel_select="vp9_decoder"
2775 vp9_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2776 vp9_d3d11va2_hwaccel_select="vp9_decoder"
2777 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
2778 vp9_dxva2_hwaccel_select="vp9_decoder"
2779 vp9_mediacodec_hwaccel_deps="mediacodec"
2780 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9_bit_depth"
2781 vp9_vaapi_hwaccel_select="vp9_decoder"
2782 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2783 wmv3_d3d11va2_hwaccel_select="vc1_d3d11va2_hwaccel"
2784 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2785 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2786 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2787
2788 # hardware-accelerated codecs
2789 omx_deps="libdl pthreads"
2790 omx_rpi_select="omx"
2791 qsvdec_select="qsv"
2792 qsvenc_select="qsv"
2793 vaapi_encode_deps="vaapi"
2794 v4l2_m2m_deps_any="linux_videodev2_h"
2795
2796 hwupload_cuda_filter_deps="cuda"
2797 scale_npp_filter_deps="cuda libnpp"
2798 scale_cuda_filter_deps="cuda_sdk"
2799 thumbnail_cuda_filter_deps="cuda_sdk"
2800
2801 nvenc_deps="cuda"
2802 nvenc_deps_any="libdl LoadLibrary"
2803 nvenc_encoder_deps="nvenc"
2804
2805 h263_v4l2m2m_decoder_deps="v4l2_m2m h263_v4l2_m2m"
2806 h263_v4l2m2m_encoder_deps="v4l2_m2m h263_v4l2_m2m"
2807 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2808 h264_cuvid_decoder_deps="cuda cuvid"
2809 h264_cuvid_decoder_select="h264_mp4toannexb_bsf"
2810 h264_mediacodec_decoder_deps="mediacodec"
2811 h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
2812 h264_mmal_decoder_deps="mmal"
2813 h264_nvenc_encoder_deps="nvenc"
2814 h264_omx_encoder_deps="omx"
2815 h264_qsv_decoder_deps="libmfx"
2816 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2817 h264_qsv_encoder_deps="libmfx"
2818 h264_qsv_encoder_select="qsvenc"
2819 h264_rkmpp_decoder_deps="rkmpp"
2820 h264_rkmpp_decoder_select="h264_mp4toannexb_bsf"
2821 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2822 h264_vaapi_encoder_select="vaapi_encode golomb"
2823 h264_vda_decoder_deps="vda"
2824 h264_vda_decoder_select="h264_decoder"
2825 h264_vdpau_decoder_deps="vdpau"
2826 h264_vdpau_decoder_select="h264_decoder"
2827 h264_v4l2m2m_decoder_deps="v4l2_m2m h264_v4l2_m2m"
2828 h264_v4l2m2m_encoder_deps="v4l2_m2m h264_v4l2_m2m"
2829 hevc_cuvid_decoder_deps="cuda cuvid"
2830 hevc_cuvid_decoder_select="hevc_mp4toannexb_bsf"
2831 hevc_mediacodec_decoder_deps="mediacodec"
2832 hevc_mediacodec_decoder_select="hevc_mp4toannexb_bsf hevc_parser"
2833 hevc_nvenc_encoder_deps="nvenc"
2834 hevc_qsv_decoder_deps="libmfx"
2835 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec hevc_qsv_hwaccel"
2836 hevc_qsv_encoder_deps="libmfx"
2837 hevc_qsv_encoder_select="hevcparse qsvenc"
2838 hevc_rkmpp_decoder_deps="rkmpp"
2839 hevc_rkmpp_decoder_select="hevc_mp4toannexb_bsf"
2840 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2841 hevc_vaapi_encoder_select="vaapi_encode golomb"
2842 hevc_v4l2m2m_decoder_deps="v4l2_m2m hevc_v4l2_m2m"
2843 hevc_v4l2m2m_encoder_deps="v4l2_m2m hevc_v4l2_m2m"
2844 mjpeg_cuvid_decoder_deps="cuda cuvid"
2845 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2846 mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
2847 mpeg1_cuvid_decoder_deps="cuda cuvid"
2848 mpeg1_vdpau_decoder_deps="vdpau"
2849 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
2850 mpeg1_v4l2m2m_decoder_deps="v4l2_m2m mpeg1_v4l2_m2m"
2851 mpeg2_crystalhd_decoder_select="crystalhd"
2852 mpeg2_cuvid_decoder_deps="cuda cuvid"
2853 mpeg2_mmal_decoder_deps="mmal"
2854 mpeg2_mediacodec_decoder_deps="mediacodec"
2855 mpeg2_qsv_decoder_deps="libmfx"
2856 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel"
2857 mpeg2_qsv_encoder_deps="libmfx"
2858 mpeg2_qsv_encoder_select="qsvenc"
2859 mpeg2_vaapi_encoder_deps="VAEncPictureParameterBufferMPEG2"
2860 mpeg2_vaapi_encoder_select="vaapi_encode"
2861 mpeg2_v4l2m2m_decoder_deps="v4l2_m2m mpeg2_v4l2_m2m"
2862 mpeg4_crystalhd_decoder_select="crystalhd"
2863 mpeg4_cuvid_decoder_deps="cuda cuvid"
2864 mpeg4_mediacodec_decoder_deps="mediacodec"
2865 mpeg4_mmal_decoder_deps="mmal"
2866 mpeg4_omx_encoder_deps="omx"
2867 mpeg4_vdpau_decoder_deps="vdpau"
2868 mpeg4_vdpau_decoder_select="mpeg4_decoder"
2869 mpeg4_v4l2m2m_decoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
2870 mpeg4_v4l2m2m_encoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
2871 mpeg_vdpau_decoder_deps="vdpau"
2872 mpeg_vdpau_decoder_select="mpeg2video_decoder"
2873 msmpeg4_crystalhd_decoder_select="crystalhd"
2874 nvenc_h264_encoder_select="h264_nvenc_encoder"
2875 nvenc_hevc_encoder_select="hevc_nvenc_encoder"
2876 vc1_crystalhd_decoder_select="crystalhd"
2877 vc1_cuvid_decoder_deps="cuda cuvid"
2878 vc1_mmal_decoder_deps="mmal"
2879 vc1_vdpau_decoder_deps="vdpau"
2880 vc1_vdpau_decoder_select="vc1_decoder"
2881 vc1_v4l2m2m_decoder_deps="v4l2_m2m vc1_v4l2_m2m"
2882 vp8_cuvid_decoder_deps="cuda cuvid"
2883 vp8_mediacodec_decoder_deps="mediacodec"
2884 vp8_qsv_decoder_deps="libmfx"
2885 vp8_qsv_decoder_select="qsvdec vp8_qsv_hwaccel vp8_parser"
2886 vp8_rkmpp_decoder_deps="rkmpp"
2887 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
2888 vp8_vaapi_encoder_select="vaapi_encode"
2889 vp8_v4l2m2m_decoder_deps="v4l2_m2m vp8_v4l2_m2m"
2890 vp8_v4l2m2m_encoder_deps="v4l2_m2m vp8_v4l2_m2m"
2891 vp9_cuvid_decoder_deps="cuda cuvid"
2892 vp9_mediacodec_decoder_deps="mediacodec"
2893 vp9_rkmpp_decoder_deps="rkmpp"
2894 vp9_vaapi_encoder_deps="VAEncPictureParameterBufferVP9"
2895 vp9_vaapi_encoder_select="vaapi_encode"
2896 vp9_v4l2m2m_decoder_deps="v4l2_m2m vp9_v4l2_m2m"
2897 wmv3_crystalhd_decoder_select="crystalhd"
2898 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
2899
2900 # parsers
2901 h264_parser_select="golomb h264dsp h264parse"
2902 hevc_parser_select="hevcparse"
2903 mpegaudio_parser_select="mpegaudioheader"
2904 mpegvideo_parser_select="mpegvideo"
2905 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
2906 vc1_parser_select="vc1dsp"
2907
2908 # bitstream_filters
2909 mjpeg2jpeg_bsf_select="jpegtables"
2910
2911 # external libraries
2912 aac_at_decoder_deps="audiotoolbox"
2913 ac3_at_decoder_deps="audiotoolbox"
2914 ac3_at_decoder_select="ac3_parser"
2915 adpcm_ima_qt_at_decoder_deps="audiotoolbox"
2916 alac_at_decoder_deps="audiotoolbox"
2917 amr_nb_at_decoder_deps="audiotoolbox"
2918 avisynth_deps_any="libdl LoadLibrary"
2919 avisynth_demuxer_deps="avisynth"
2920 avisynth_demuxer_select="riffdec"
2921 eac3_at_decoder_deps="audiotoolbox"
2922 eac3_at_decoder_select="ac3_parser"
2923 gsm_ms_at_decoder_deps="audiotoolbox"
2924 ilbc_at_decoder_deps="audiotoolbox"
2925 mp1_at_decoder_deps="audiotoolbox"
2926 mp2_at_decoder_deps="audiotoolbox"
2927 mp3_at_decoder_deps="audiotoolbox"
2928 mp1_at_decoder_select="mpegaudioheader"
2929 mp2_at_decoder_select="mpegaudioheader"
2930 mp3_at_decoder_select="mpegaudioheader"
2931 pcm_alaw_at_decoder_deps="audiotoolbox"
2932 pcm_mulaw_at_decoder_deps="audiotoolbox"
2933 qdmc_at_decoder_deps="audiotoolbox"
2934 qdm2_at_decoder_deps="audiotoolbox"
2935 aac_at_encoder_deps="audiotoolbox"
2936 aac_at_encoder_select="audio_frame_queue"
2937 alac_at_encoder_deps="audiotoolbox"
2938 alac_at_encoder_select="audio_frame_queue"
2939 ilbc_at_encoder_deps="audiotoolbox"
2940 ilbc_at_encoder_select="audio_frame_queue"
2941 pcm_alaw_at_encoder_deps="audiotoolbox"
2942 pcm_alaw_at_encoder_select="audio_frame_queue"
2943 pcm_mulaw_at_encoder_deps="audiotoolbox"
2944 pcm_mulaw_at_encoder_select="audio_frame_queue"
2945 chromaprint_muxer_deps="chromaprint"
2946 h264_videotoolbox_encoder_deps="pthreads"
2947 h264_videotoolbox_encoder_select="videotoolbox_encoder"
2948 libcelt_decoder_deps="libcelt"
2949 libfdk_aac_decoder_deps="libfdk_aac"
2950 libfdk_aac_encoder_deps="libfdk_aac"
2951 libfdk_aac_encoder_select="audio_frame_queue"
2952 libgme_demuxer_deps="libgme"
2953 libgsm_decoder_deps="libgsm"
2954 libgsm_encoder_deps="libgsm"
2955 libgsm_ms_decoder_deps="libgsm"
2956 libgsm_ms_encoder_deps="libgsm"
2957 libilbc_decoder_deps="libilbc"
2958 libilbc_encoder_deps="libilbc"
2959 libkvazaar_encoder_deps="libkvazaar"
2960 libmodplug_demuxer_deps="libmodplug"
2961 libmp3lame_encoder_deps="libmp3lame"
2962 libmp3lame_encoder_select="audio_frame_queue mpegaudioheader"
2963 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2964 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2965 libopencore_amrnb_encoder_select="audio_frame_queue"
2966 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2967 libopenh264_decoder_deps="libopenh264"
2968 libopenh264_decoder_select="h264_mp4toannexb_bsf"
2969 libopenh264_encoder_deps="libopenh264"
2970 libopenjpeg_decoder_deps="libopenjpeg"
2971 libopenjpeg_encoder_deps="libopenjpeg"
2972 libopenmpt_demuxer_deps="libopenmpt"
2973 libopus_decoder_deps="libopus"
2974 libopus_encoder_deps="libopus"
2975 libopus_encoder_select="audio_frame_queue"
2976 librsvg_decoder_deps="librsvg"
2977 libshine_encoder_deps="libshine"
2978 libshine_encoder_select="audio_frame_queue"
2979 libspeex_decoder_deps="libspeex"
2980 libspeex_encoder_deps="libspeex"
2981 libspeex_encoder_select="audio_frame_queue"
2982 libtheora_encoder_deps="libtheora"
2983 libtwolame_encoder_deps="libtwolame"
2984 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2985 libvorbis_decoder_deps="libvorbis"
2986 libvorbis_encoder_deps="libvorbis libvorbisenc"
2987 libvorbis_encoder_select="audio_frame_queue"
2988 libvpx_vp8_decoder_deps="libvpx"
2989 libvpx_vp8_encoder_deps="libvpx"
2990 libvpx_vp9_decoder_deps="libvpx"
2991 libvpx_vp9_encoder_deps="libvpx"
2992 libwavpack_encoder_deps="libwavpack"
2993 libwavpack_encoder_select="audio_frame_queue"
2994 libwebp_encoder_deps="libwebp"
2995 libwebp_anim_encoder_deps="libwebp"
2996 libx262_encoder_deps="libx262"
2997 libx264_encoder_deps="libx264"
2998 libx264rgb_encoder_deps="libx264 x264_csp_bgr"
2999 libx264rgb_encoder_select="libx264_encoder"
3000 libx265_encoder_deps="libx265"
3001 libxavs_encoder_deps="libxavs"
3002 libxvid_encoder_deps="libxvid"
3003 libzvbi_teletext_decoder_deps="libzvbi"
3004 videotoolbox_suggest="coreservices"
3005 videotoolbox_deps="corefoundation coremedia corevideo"
3006 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
3007 videotoolbox_encoder_suggest="vda_framework"
3008
3009 # demuxers / muxers
3010 ac3_demuxer_select="ac3_parser"
3011 aiff_muxer_select="iso_media"
3012 asf_demuxer_select="riffdec"
3013 asf_o_demuxer_select="riffdec"
3014 asf_muxer_select="riffenc"
3015 asf_stream_muxer_select="asf_muxer"
3016 avi_demuxer_select="iso_media riffdec exif"
3017 avi_muxer_select="riffenc"
3018 caf_demuxer_select="iso_media riffdec"
3019 caf_muxer_select="iso_media"
3020 dash_muxer_select="mp4_muxer"
3021 dash_demuxer_deps="libxml2"
3022 dirac_demuxer_select="dirac_parser"
3023 dts_demuxer_select="dca_parser"
3024 dtshd_demuxer_select="dca_parser"
3025 dv_demuxer_select="dvprofile"
3026 dv_muxer_select="dvprofile"
3027 dxa_demuxer_select="riffdec"
3028 eac3_demuxer_select="ac3_parser"
3029 f4v_muxer_select="mov_muxer"
3030 fifo_muxer_deps="threads"
3031 flac_demuxer_select="flac_parser"
3032 hds_muxer_select="flv_muxer"
3033 hls_muxer_select="mpegts_muxer"
3034 image2_alias_pix_demuxer_select="image2_demuxer"
3035 image2_brender_pix_demuxer_select="image2_demuxer"
3036 ipod_muxer_select="mov_muxer"
3037 ismv_muxer_select="mov_muxer"
3038 matroska_audio_muxer_select="matroska_muxer"
3039 matroska_demuxer_select="iso_media riffdec"
3040 matroska_demuxer_suggest="bzlib lzo zlib"
3041 matroska_muxer_select="iso_media riffenc"
3042 mmf_muxer_select="riffenc"
3043 mov_demuxer_select="iso_media riffdec"
3044 mov_demuxer_suggest="zlib"
3045 mov_muxer_select="iso_media riffenc rtpenc_chain"
3046 mp3_demuxer_select="mpegaudio_parser"
3047 mp3_muxer_select="mpegaudioheader"
3048 mp4_muxer_select="mov_muxer"
3049 mpegts_demuxer_select="iso_media"
3050 mpegts_muxer_select="adts_muxer latm_muxer"
3051 mpegtsraw_demuxer_select="mpegts_demuxer"
3052 mxf_d10_muxer_select="mxf_muxer"
3053 mxf_opatom_muxer_select="mxf_muxer"
3054 nut_muxer_select="riffenc"
3055 nuv_demuxer_select="riffdec"
3056 oga_muxer_select="ogg_muxer"
3057 ogg_demuxer_select="dirac_parse"
3058 ogv_muxer_select="ogg_muxer"
3059 opus_muxer_select="ogg_muxer"
3060 psp_muxer_select="mov_muxer"
3061 rtp_demuxer_select="sdp_demuxer"
3062 rtp_muxer_select="golomb"
3063 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
3064 rtsp_demuxer_select="http_protocol rtpdec"
3065 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
3066 sap_demuxer_select="sdp_demuxer"
3067 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
3068 sdp_demuxer_select="rtpdec"
3069 smoothstreaming_muxer_select="ismv_muxer"
3070 spdif_muxer_select="aac_parser"
3071 spx_muxer_select="ogg_muxer"
3072 swf_demuxer_suggest="zlib"
3073 tak_demuxer_select="tak_parser"
3074 tg2_muxer_select="mov_muxer"
3075 tgp_muxer_select="mov_muxer"
3076 vobsub_demuxer_select="mpegps_demuxer"
3077 w64_demuxer_select="wav_demuxer"
3078 w64_muxer_select="wav_muxer"
3079 wav_demuxer_select="riffdec"
3080 wav_muxer_select="riffenc"
3081 webm_muxer_select="iso_media riffenc"
3082 webm_dash_manifest_demuxer_select="matroska_demuxer"
3083 wtv_demuxer_select="mpegts_demuxer riffdec"
3084 wtv_muxer_select="mpegts_muxer riffenc"
3085 xmv_demuxer_select="riffdec"
3086 xwma_demuxer_select="riffdec"
3087
3088 # indevs / outdevs
3089 alsa_indev_deps="alsa"
3090 alsa_outdev_deps="alsa"
3091 avfoundation_indev_deps="avfoundation corevideo coremedia pthreads"
3092 avfoundation_indev_suggest="coregraphics applicationservices"
3093 avfoundation_indev_extralibs="-framework Foundation"
3094 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
3095 caca_outdev_deps="libcaca"
3096 decklink_deps_any="libdl LoadLibrary"
3097 decklink_indev_deps="decklink threads"
3098 decklink_indev_extralibs="-lstdc++"
3099 decklink_outdev_deps="decklink threads"
3100 decklink_outdev_extralibs="-lstdc++"
3101 libndi_newtek_indev_deps="libndi_newtek"
3102 libndi_newtek_indev_extralibs="-lndi"
3103 libndi_newtek_outdev_deps="libndi_newtek"
3104 libndi_newtek_outdev_extralibs="-lndi"
3105 dshow_indev_deps="IBaseFilter"
3106 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
3107 fbdev_indev_deps="linux_fb_h"
3108 fbdev_outdev_deps="linux_fb_h"
3109 gdigrab_indev_deps="CreateDIBSection"
3110 gdigrab_indev_extralibs="-lgdi32"
3111 gdigrab_indev_select="bmp_decoder"
3112 iec61883_indev_deps="libiec61883"
3113 jack_indev_deps="jack"
3114 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
3115 kmsgrab_indev_deps="libdrm"
3116 lavfi_indev_deps="avfilter"
3117 libcdio_indev_deps="libcdio"
3118 libdc1394_indev_deps="libdc1394"
3119 v4l2_indev_deps="libv4l2"
3120 openal_indev_deps="openal"
3121 opengl_outdev_deps="opengl"
3122 oss_indev_deps_any="soundcard_h sys_soundcard_h"
3123 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
3124 pulse_indev_deps="libpulse"
3125 pulse_outdev_deps="libpulse"
3126 sdl2_outdev_deps="sdl2"
3127 sndio_indev_deps="sndio"
3128 sndio_outdev_deps="sndio"
3129 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
3130 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
3131 vfwcap_indev_deps="vfw32 vfwcap_defines"
3132 xcbgrab_indev_deps="libxcb"
3133 xcbgrab_indev_suggest="libxcb_shm libxcb_shape libxcb_xfixes"
3134 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
3135 xv_outdev_extralibs="-lXv -lX11 -lXext"
3136
3137 # protocols
3138 async_protocol_deps="threads"
3139 bluray_protocol_deps="libbluray"
3140 ffrtmpcrypt_protocol_conflict="librtmp_protocol"
3141 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
3142 ffrtmpcrypt_protocol_select="tcp_protocol"
3143 ffrtmphttp_protocol_conflict="librtmp_protocol"
3144 ffrtmphttp_protocol_select="http_protocol"
3145 ftp_protocol_select="tcp_protocol"
3146 gopher_protocol_select="network"
3147 http_protocol_select="tcp_protocol"
3148 http_protocol_suggest="zlib"
3149 httpproxy_protocol_select="tcp_protocol"
3150 httpproxy_protocol_suggest="zlib"
3151 https_protocol_select="tls_protocol"
3152 https_protocol_suggest="zlib"
3153 icecast_protocol_select="http_protocol"
3154 librtmp_protocol_deps="librtmp"
3155 librtmpe_protocol_deps="librtmp"
3156 librtmps_protocol_deps="librtmp"
3157 librtmpt_protocol_deps="librtmp"
3158 librtmpte_protocol_deps="librtmp"
3159 libsmbclient_protocol_deps="libsmbclient gplv3"
3160 libssh_protocol_deps="libssh"
3161 mmsh_protocol_select="http_protocol"
3162 mmst_protocol_select="network"
3163 rtmp_protocol_conflict="librtmp_protocol"
3164 rtmp_protocol_select="tcp_protocol"
3165 rtmp_protocol_suggest="zlib"
3166 rtmpe_protocol_select="ffrtmpcrypt_protocol"
3167 rtmpe_protocol_suggest="zlib"
3168 rtmps_protocol_conflict="librtmp_protocol"
3169 rtmps_protocol_select="tls_protocol"
3170 rtmps_protocol_suggest="zlib"
3171 rtmpt_protocol_select="ffrtmphttp_protocol"
3172 rtmpt_protocol_suggest="zlib"
3173 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
3174 rtmpte_protocol_suggest="zlib"
3175 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
3176 rtmpts_protocol_suggest="zlib"
3177 rtp_protocol_select="udp_protocol"
3178 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
3179 sctp_protocol_select="network"
3180 srtp_protocol_select="rtp_protocol srtp"
3181 tcp_protocol_select="network"
3182 tls_gnutls_protocol_conflict="tls_schannel_protocol tls_securetransport_protocol"
3183 tls_gnutls_protocol_deps="gnutls"
3184 tls_gnutls_protocol_select="tcp_protocol"
3185 tls_openssl_protocol_conflict="tls_schannel_protocol tls_securetransport_protocol tls_gnutls_protocol"
3186 tls_openssl_protocol_deps="openssl"
3187 tls_openssl_protocol_select="tcp_protocol"
3188 tls_schannel_protocol_deps="schannel"
3189 tls_schannel_protocol_select="tcp_protocol"
3190 tls_securetransport_protocol_deps="securetransport"
3191 tls_securetransport_protocol_select="tcp_protocol"
3192 tls_protocol_deps_any="tls_schannel_protocol tls_securetransport_protocol tls_gnutls_protocol tls_openssl_protocol"
3193 udp_protocol_select="network"
3194 udplite_protocol_select="network"
3195 unix_protocol_deps="sys_un_h"
3196 unix_protocol_select="network"
3197
3198 # filters
3199 afftfilt_filter_deps="avcodec"
3200 afftfilt_filter_select="fft"
3201 afir_filter_deps="avcodec"
3202 afir_filter_select="fft"
3203 amovie_filter_deps="avcodec avformat"
3204 aresample_filter_deps="swresample"
3205 ass_filter_deps="libass"
3206 atempo_filter_deps="avcodec"
3207 atempo_filter_select="rdft"
3208 azmq_filter_deps="libzmq"
3209 blackframe_filter_deps="gpl"
3210 boxblur_filter_deps="gpl"
3211 bs2b_filter_deps="libbs2b"
3212 colormatrix_filter_deps="gpl"
3213 coreimage_filter_deps="coreimage appkit"
3214 coreimage_filter_extralibs="-framework OpenGL"
3215 coreimagesrc_filter_deps="coreimage appkit"
3216 coreimagesrc_filter_extralibs="-framework OpenGL"
3217 cover_rect_filter_deps="avcodec avformat gpl"
3218 cropdetect_filter_deps="gpl"
3219 deinterlace_qsv_filter_deps="libmfx"
3220 deinterlace_vaapi_filter_deps="vaapi"
3221 delogo_filter_deps="gpl"
3222 deshake_filter_select="pixelutils"
3223 deshake_filter_suggest="opencl"
3224 drawtext_filter_deps="libfreetype"
3225 drawtext_filter_suggest="libfontconfig"
3226 elbg_filter_deps="avcodec"
3227 eq_filter_deps="gpl"
3228 fftfilt_filter_deps="avcodec"
3229 fftfilt_filter_select="rdft"
3230 find_rect_filter_deps="avcodec avformat gpl"
3231 firequalizer_filter_deps="avcodec"
3232 firequalizer_filter_select="rdft"
3233 flite_filter_deps="libflite"
3234 framerate_filter_select="pixelutils"
3235 frei0r_filter_deps="frei0r libdl"
3236 frei0r_src_filter_deps="frei0r libdl"
3237 fspp_filter_deps="gpl"
3238 geq_filter_deps="gpl"
3239 histeq_filter_deps="gpl"
3240 hqdn3d_filter_deps="gpl"
3241 interlace_filter_deps="gpl"
3242 kerndeint_filter_deps="gpl"
3243 ladspa_filter_deps="ladspa libdl"
3244 mcdeint_filter_deps="avcodec gpl"
3245 movie_filter_deps="avcodec avformat"
3246 mpdecimate_filter_deps="gpl"
3247 mpdecimate_filter_select="pixelutils"
3248 mptestsrc_filter_deps="gpl"
3249 negate_filter_deps="lut_filter"
3250 nnedi_filter_deps="gpl"
3251 ocr_filter_deps="libtesseract"
3252 ocv_filter_deps="libopencv"
3253 owdenoise_filter_deps="gpl"
3254 pan_filter_deps="swresample"
3255 perspective_filter_deps="gpl"
3256 phase_filter_deps="gpl"
3257 pp7_filter_deps="gpl"
3258 pp_filter_deps="gpl postproc"
3259 pullup_filter_deps="gpl"
3260 removelogo_filter_deps="avcodec avformat swscale"
3261 repeatfields_filter_deps="gpl"
3262 resample_filter_deps="avresample"
3263 rubberband_filter_deps="librubberband"
3264 sab_filter_deps="gpl swscale"
3265 scale2ref_filter_deps="swscale"
3266 scale_filter_deps="swscale"
3267 scale_qsv_filter_deps="libmfx"
3268 select_filter_select="pixelutils"
3269 showcqt_filter_deps="avcodec avformat swscale"
3270 showcqt_filter_select="fft"
3271 showfreqs_filter_deps="avcodec"
3272 showfreqs_filter_select="fft"
3273 showspectrum_filter_deps="avcodec"
3274 showspectrum_filter_select="fft"
3275 showspectrumpic_filter_deps="avcodec"
3276 showspectrumpic_filter_select="fft"
3277 signature_filter_deps="gpl avcodec avformat"
3278 smartblur_filter_deps="gpl swscale"
3279 sofalizer_filter_deps="libmysofa avcodec"
3280 sofalizer_filter_select="fft"
3281 spectrumsynth_filter_deps="avcodec"
3282 spectrumsynth_filter_select="fft"
3283 spp_filter_deps="gpl avcodec"
3284 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3285 stereo3d_filter_deps="gpl"
3286 subtitles_filter_deps="avformat avcodec libass"
3287 super2xsai_filter_deps="gpl"
3288 pixfmts_super2xsai_test_deps="super2xsai_filter"
3289 tinterlace_filter_deps="gpl"
3290 tinterlace_merge_test_deps="tinterlace_filter"
3291 tinterlace_pad_test_deps="tinterlace_filter"
3292 tonemap_filter_deps="const_nan"
3293 uspp_filter_deps="gpl avcodec"
3294 unsharp_filter_suggest="opencl"
3295 vaguedenoiser_filter_deps="gpl"
3296 vidstabdetect_filter_deps="libvidstab"
3297 vidstabtransform_filter_deps="libvidstab"
3298 libvmaf_filter_deps="libvmaf"
3299 zmq_filter_deps="libzmq"
3300 zoompan_filter_deps="swscale"
3301 zscale_filter_deps="libzimg const_nan"
3302 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3303
3304 # examples
3305 avio_dir_cmd_deps="avformat avutil"
3306 avio_reading_deps="avformat avcodec avutil"
3307 decode_audio_example_deps="avcodec avutil"
3308 decode_video_example_deps="avcodec avutil"
3309 demuxing_decoding_example_deps="avcodec avformat avutil"
3310 encode_audio_example_deps="avcodec avutil"
3311 encode_video_example_deps="avcodec avutil"
3312 extract_mvs_example_deps="avcodec avformat avutil"
3313 filter_audio_example_deps="avfilter avutil"
3314 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3315 filtering_video_example_deps="avfilter avcodec avformat avutil"
3316 http_multiclient_example_deps="avformat avutil fork"
3317 hw_decode_example_deps="avcodec avformat avutil"
3318 metadata_example_deps="avformat avutil"
3319 muxing_example_deps="avcodec avformat avutil swscale"
3320 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
3321 remuxing_example_deps="avcodec avformat avutil"
3322 resampling_audio_example_deps="avutil swresample"
3323 scaling_video_example_deps="avutil swscale"
3324 transcode_aac_example_deps="avcodec avformat swresample"
3325 transcoding_example_deps="avfilter avcodec avformat avutil"
3326
3327 # EXTRALIBS_LIST
3328 cpu_init_extralibs="pthreads_extralibs"
3329 cws2fws_extralibs="zlib_extralibs"
3330
3331 # libraries, in linking order
3332 avcodec_deps="avutil"
3333 avcodec_suggest="libm"
3334 avcodec_select="null_bsf"
3335 avdevice_deps="avformat avcodec avutil"
3336 avdevice_suggest="libm"
3337 avfilter_deps="avutil"
3338 avfilter_suggest="libm"
3339 avformat_deps="avcodec avutil"
3340 avformat_suggest="libm network"
3341 avresample_deps="avutil"
3342 avresample_suggest="libm"
3343 avutil_suggest="libm libdrm libmfx user32 vaapi videotoolbox wincrypt"
3344 postproc_deps="avutil gpl"
3345 postproc_suggest="libm"
3346 swresample_deps="avutil"
3347 swresample_suggest="libm libsoxr"
3348 swscale_deps="avutil"
3349 swscale_suggest="libm"
3350
3351 avcodec_extralibs="pthreads_extralibs iconv_extralibs"
3352 avfilter_extralibs="pthreads_extralibs"
3353 avutil_extralibs="clock_gettime_extralibs nanosleep_extralibs pthreads_extralibs vaapi_drm_extralibs vaapi_x11_extralibs vdpau_x11_extralibs"
3354
3355 # programs
3356 ffmpeg_deps="avcodec avfilter avformat swresample"
3357 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3358                null_filter
3359                trim_filter"
3360 ffmpeg_suggest="ole32 psapi shell32"
3361 ffplay_deps="avcodec avformat swscale swresample sdl2"
3362 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3363 ffplay_suggest="shell32"
3364 ffprobe_deps="avcodec avformat"
3365 ffprobe_suggest="shell32"
3366 ffserver_deps="avformat fork sarestart"
3367 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
3368
3369 # documentation
3370 podpages_deps="perl"
3371 manpages_deps="perl pod2man"
3372 htmlpages_deps="perl"
3373 htmlpages_deps_any="makeinfo_html texi2html"
3374 txtpages_deps="perl makeinfo"
3375 doc_deps_any="manpages htmlpages podpages txtpages"
3376
3377 # default parameters
3378
3379 logfile="ffbuild/config.log"
3380
3381 # installation paths
3382 prefix_default="/usr/local"
3383 bindir_default='${prefix}/bin'
3384 datadir_default='${prefix}/share/ffmpeg'
3385 docdir_default='${prefix}/share/doc/ffmpeg'
3386 incdir_default='${prefix}/include'
3387 libdir_default='${prefix}/lib'
3388 mandir_default='${prefix}/share/man'
3389
3390 # toolchain
3391 ar_default="ar"
3392 cc_default="gcc"
3393 cxx_default="g++"
3394 host_cc_default="gcc"
3395 doxygen_default="doxygen"
3396 install="install"
3397 ln_s_default="ln -s -f"
3398 nm_default="nm -g"
3399 pkg_config_default=pkg-config
3400 ranlib_default="ranlib"
3401 strip_default="strip"
3402 version_script='--version-script'
3403 x86asmexe_default="nasm"
3404 windres_default="windres"
3405 nvcc_default="nvcc"
3406 nvccflags_default="-gencode arch=compute_30,code=sm_30 -O2"
3407 striptype="direct"
3408
3409 # OS
3410 target_os_default=$(tolower $(uname -s))
3411 host_os=$target_os_default
3412
3413 # machine
3414 if test "$target_os_default" = aix; then
3415     arch_default=$(uname -p)
3416     strip_default="strip -X32_64"
3417 else
3418     arch_default=$(uname -m)
3419 fi
3420 cpu="generic"
3421 intrinsics="none"
3422
3423 # configurable options
3424 enable $PROGRAM_LIST
3425 enable $DOCUMENT_LIST
3426 enable $EXAMPLE_LIST
3427 enable $(filter_out avresample $LIBRARY_LIST)
3428 enable stripping
3429
3430 enable asm
3431 enable debug
3432 enable doc
3433 enable faan faandct faanidct
3434 enable optimizations
3435 enable runtime_cpudetect
3436 enable safe_bitstream_reader
3437 enable static
3438 enable swscale_alpha
3439 enable valgrind_backtrace
3440
3441 sws_max_filter_size_default=256
3442 set_default sws_max_filter_size
3443
3444 # internal components are enabled by default
3445 enable $EXTRALIBS_LIST
3446
3447 # Avoid external, non-system, libraries getting enabled by dependency resolution
3448 disable $EXTERNAL_LIBRARY_LIST $HWACCEL_LIBRARY_LIST
3449
3450 # build settings
3451 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3452 LIBPREF="lib"
3453 LIBSUF=".a"
3454 FULLNAME='$(NAME)$(BUILDSUF)'
3455 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3456 SLIBPREF="lib"
3457 SLIBSUF=".so"
3458 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3459 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3460 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3461 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3462 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3463 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3464 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
3465
3466 asflags_filter=echo
3467 cflags_filter=echo
3468 ldflags_filter=echo
3469
3470 AS_C='-c'
3471 AS_O='-o $@'
3472 CC_C='-c'
3473 CC_E='-E -o $@'
3474 CC_O='-o $@'
3475 CXX_C='-c'
3476 CXX_O='-o $@'
3477 OBJCC_C='-c'
3478 OBJCC_E='-E -o $@'
3479 OBJCC_O='-o $@'
3480 X86ASM_O='-o $@'
3481 LD_O='-o $@'
3482 LD_LIB='-l%'
3483 LD_PATH='-L'
3484 HOSTCC_C='-c'
3485 HOSTCC_E='-E -o $@'
3486 HOSTCC_O='-o $@'
3487 HOSTLD_O='-o $@'
3488 NVCC_C='-c'
3489 NVCC_O='-o $@'
3490
3491 host_extralibs='-lm'
3492 host_cflags_filter=echo
3493 host_ldflags_filter=echo
3494
3495 target_path='$(CURDIR)'
3496
3497 # since the object filename is not given with the -MM flag, the compiler
3498 # is only able to print the basename, and we must add the path ourselves
3499 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3500 DEPFLAGS='-MM'
3501
3502 mkdir -p ffbuild
3503
3504 # find source path
3505 if test -f configure; then
3506     source_path=.
3507 else
3508     source_path=$(cd $(dirname "$0"); pwd)
3509     case "$source_path" in
3510         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3511     esac
3512     test -e "$source_path/config.h" &&
3513         die "Out of tree builds are impossible with config.h in source dir."
3514 fi
3515
3516 for v in "$@"; do
3517     r=${v#*=}
3518     l=${v%"$r"}
3519     r=$(sh_quote "$r")
3520     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3521 done
3522
3523 find_things(){
3524     thing=$1
3525     pattern=$2
3526     file=$source_path/$3
3527     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
3528 }
3529
3530 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
3531 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
3532 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
3533 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
3534 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
3535 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
3536 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
3537 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
3538 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
3539
3540 find_things_extern(){
3541     thing=$1
3542     pattern=$2
3543     file=$source_path/$3
3544     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
3545 }
3546
3547 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3548 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3549
3550 AVCODEC_COMPONENTS_LIST="
3551     $BSF_LIST
3552     $DECODER_LIST
3553     $ENCODER_LIST
3554     $HWACCEL_LIST
3555     $PARSER_LIST
3556 "
3557
3558 AVDEVICE_COMPONENTS_LIST="
3559     $INDEV_LIST
3560     $OUTDEV_LIST
3561 "
3562
3563 AVFILTER_COMPONENTS_LIST="
3564     $FILTER_LIST
3565 "
3566
3567 AVFORMAT_COMPONENTS_LIST="
3568     $DEMUXER_LIST
3569     $MUXER_LIST
3570     $PROTOCOL_LIST
3571 "
3572
3573 ALL_COMPONENTS="
3574     $AVCODEC_COMPONENTS_LIST
3575     $AVDEVICE_COMPONENTS_LIST
3576     $AVFILTER_COMPONENTS_LIST
3577     $AVFORMAT_COMPONENTS_LIST
3578 "
3579
3580 for n in $COMPONENT_LIST; do
3581     v=$(toupper ${n%s})_LIST
3582     eval enable \$$v
3583     eval ${n}_if_any="\$$v"
3584 done
3585
3586 enable $ARCH_EXT_LIST
3587
3588 die_unknown(){
3589     echo "Unknown option \"$1\"."
3590     echo "See $0 --help for available options."
3591     exit 1
3592 }
3593
3594 print_in_columns() {
3595     cols=$(expr $ncols / 24)
3596     cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
3597 }
3598
3599 show_list() {
3600     suffix=_$1
3601     shift
3602     echo $* | sed s/$suffix//g | print_in_columns
3603     exit 0
3604 }
3605
3606 rand_list(){
3607     IFS=', '
3608     set -- $*
3609     unset IFS
3610     for thing; do
3611         comp=${thing%:*}
3612         prob=${thing#$comp}
3613         prob=${prob#:}
3614         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3615         echo "prob ${prob:-0.5}"
3616         printf '%s\n' $comp
3617     done
3618 }
3619
3620 do_random(){
3621     action=$1
3622     shift
3623     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3624     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3625 }
3626
3627 for opt do
3628     optval="${opt#*=}"
3629     case "$opt" in
3630         --extra-ldflags=*)
3631             add_ldflags $optval
3632         ;;
3633         --extra-ldexeflags=*)
3634             add_ldexeflags $optval
3635         ;;
3636         --extra-ldlibflags=*)
3637             add_ldlibflags $optval
3638         ;;
3639         --extra-libs=*)
3640             add_extralibs $optval
3641         ;;
3642         --disable-devices)
3643             disable $INDEV_LIST $OUTDEV_LIST
3644         ;;
3645         --enable-debug=*)
3646             debuglevel="$optval"
3647         ;;
3648         --disable-programs)
3649             disable $PROGRAM_LIST
3650         ;;
3651         --disable-everything)
3652             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3653         ;;
3654         --disable-all)
3655             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3656             disable $LIBRARY_LIST $PROGRAM_LIST doc
3657             enable avutil
3658         ;;
3659         --enable-random|--disable-random)
3660             action=${opt%%-random}
3661             do_random ${action#--} $COMPONENT_LIST
3662         ;;
3663         --enable-random=*|--disable-random=*)
3664             action=${opt%%-random=*}
3665             do_random ${action#--} $optval
3666         ;;
3667         --enable-sdl)
3668             enable sdl2
3669         ;;
3670         --enable-*=*|--disable-*=*)
3671             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3672             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3673             eval list=\$$(toupper $thing)_LIST
3674             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3675             list=$(filter "$name" $list)
3676             [ "$list" = "" ] && warn "Option $opt did not match anything"
3677             $action $list
3678         ;;
3679         --enable-yasm|--disable-yasm)
3680             warn "The ${opt} option is only provided for compatibility and will be\n"\
3681                  "removed in the future. Use --enable-x86asm / --disable-x86asm instead."
3682             test $opt = --enable-yasm && x86asm=yes || x86asm=no
3683         ;;
3684         --yasmexe=*)
3685             warn "The --yasmexe option is only provided for compatibility and will be\n"\
3686                  "removed in the future. Use --x86asmexe instead."
3687             x86asmexe="$optval"
3688         ;;
3689         --enable-?*|--disable-?*)
3690             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3691             if is_in $option $COMPONENT_LIST; then
3692                 test $action = disable && action=unset
3693                 eval $action \$$(toupper ${option%s})_LIST
3694             elif is_in $option $CMDLINE_SELECT; then
3695                 $action $option
3696             else
3697                 die_unknown $opt
3698             fi
3699         ;;
3700         --list-*)
3701             NAME="${opt#--list-}"
3702             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3703             NAME=${NAME%s}
3704             eval show_list $NAME \$$(toupper $NAME)_LIST
3705         ;;
3706         --help|-h) show_help
3707         ;;
3708         --quiet|-q) quiet=yes
3709         ;;
3710         --fatal-warnings) enable fatal_warnings
3711         ;;
3712         --libfuzzer=*)
3713             libfuzzer_path="$optval"
3714         ;;
3715         *)
3716             optname="${opt%%=*}"
3717             optname="${optname#--}"
3718             optname=$(echo "$optname" | sed 's/-/_/g')
3719             if is_in $optname $CMDLINE_SET; then
3720                 eval $optname='$optval'
3721             elif is_in $optname $CMDLINE_APPEND; then
3722                 append $optname "$optval"
3723             else
3724                 die_unknown $opt
3725             fi
3726         ;;
3727     esac
3728 done
3729
3730 for e in $env; do
3731     eval "export $e"
3732 done
3733
3734 if disabled autodetect; then
3735
3736     # Unless iconv is explicitely disabled by the user, we still want to probe
3737     # for the iconv from the libc.
3738     disabled iconv || enable libc_iconv
3739
3740     disable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3741     disable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3742 fi
3743 # Mark specifically enabled, but normally autodetected libraries as requested.
3744 for lib in $AUTODETECT_LIBS; do
3745     enabled $lib && request $lib
3746 done
3747 #TODO: switch to $AUTODETECT_LIBS when $THREADS_LIST is supported the same way
3748 enable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3749 enable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3750
3751 disabled logging && logfile=/dev/null
3752
3753 die_license_disabled() {
3754     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
3755 }
3756
3757 die_license_disabled_gpl() {
3758     enabled $1 || { enabled $v && die "$v is incompatible with the gpl and --enable-$1 is not specified."; }
3759 }
3760
3761 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3762 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3763
3764 enabled gpl && map "die_license_disabled_gpl nonfree" $EXTERNAL_LIBRARY_NONFREE_LIST
3765 map "die_license_disabled nonfree" $HWACCEL_LIBRARY_NONFREE_LIST
3766
3767 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3768
3769 # Disable all the library-specific components if the library itself
3770 # is disabled, see AVCODEC_LIST and following _LIST variables.
3771
3772 disable_components(){
3773     disabled ${1} && disable $(
3774         eval components="\$$(toupper ${1})_COMPONENTS"
3775         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
3776     )
3777 }
3778
3779 map 'disable_components $v' $LIBRARY_LIST
3780
3781 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
3782 set >> $logfile
3783
3784 test -n "$valgrind" && toolchain="valgrind-memcheck"
3785
3786 enabled ossfuzz && {
3787     add_cflags  -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp -fno-omit-frame-pointer
3788     add_ldflags -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp
3789 }
3790
3791 case "$toolchain" in
3792     *-asan)
3793         cc_default="${toolchain%-asan}"
3794         add_cflags  -fsanitize=address
3795         add_ldflags -fsanitize=address
3796     ;;
3797     *-msan)
3798         cc_default="${toolchain%-msan}"
3799         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
3800         add_ldflags -fsanitize=memory
3801     ;;
3802     *-tsan)
3803         cc_default="${toolchain%-tsan}"
3804         add_cflags  -fsanitize=thread -fPIE
3805         add_ldflags -fsanitize=thread -pie
3806         case "$toolchain" in
3807             gcc-tsan)
3808                 add_cflags  -fPIC
3809                 add_ldflags -fPIC
3810                 ;;
3811         esac
3812     ;;
3813     *-usan)
3814         cc_default="${toolchain%-usan}"
3815         add_cflags  -fsanitize=undefined
3816         add_ldflags -fsanitize=undefined
3817     ;;
3818     valgrind-*)
3819         target_exec_default="valgrind"
3820         case "$toolchain" in
3821             valgrind-massif)
3822                 target_exec_args="--tool=massif --alloc-fn=av_malloc --alloc-fn=av_mallocz --alloc-fn=av_calloc --alloc-fn=av_fast_padded_malloc --alloc-fn=av_fast_malloc --alloc-fn=av_realloc_f --alloc-fn=av_fast_realloc --alloc-fn=av_realloc"
3823                 ;;
3824             valgrind-memcheck)
3825                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3826                 ;;
3827         esac
3828     ;;
3829     msvc)
3830         # Check whether the current MSVC version needs the C99 converter.
3831         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3832         # support enough of C99 to build ffmpeg. Default to the new
3833         # behaviour if the regexp was unable to match anything, since this
3834         # successfully parses the version number of existing supported
3835         # versions that require the converter (MSVC 2010 and 2012).
3836         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3837         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3838             cc_default="cl"
3839             cxx_default="cl"
3840         else
3841             cc_default="c99wrap cl"
3842             cxx_default="c99wrap cl"
3843         fi
3844         ld_default="$source_path/compat/windows/mslink"
3845         nm_default="dumpbin -symbols"
3846         ar_default="lib"
3847         case "$arch" in
3848         arm*)
3849             as_default="armasm"
3850             ;;
3851         esac
3852         target_os_default="win32"
3853         # Use a relative path for TMPDIR. This makes sure all the
3854         # ffconf temp files are written with a relative path, avoiding
3855         # issues with msys/win32 path conversion for MSVC parameters
3856         # such as -Fo<file> or -out:<file>.
3857         TMPDIR=.
3858     ;;
3859     icl)
3860         cc_default="icl"
3861         ld_default="xilink"
3862         nm_default="dumpbin -symbols"
3863         ar_default="xilib"
3864         target_os_default="win32"
3865         TMPDIR=.
3866     ;;
3867     gcov)
3868         add_cflags  -fprofile-arcs -ftest-coverage
3869         add_ldflags -fprofile-arcs -ftest-coverage
3870     ;;
3871     llvm-cov)
3872         add_cflags -fprofile-arcs -ftest-coverage
3873         add_ldflags --coverage
3874     ;;
3875     hardened)
3876         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3877         add_cflags   -fno-strict-overflow -fstack-protector-all
3878         add_ldflags  -Wl,-z,relro -Wl,-z,now
3879         add_cflags   -fPIE
3880         add_ldexeflags -fPIE -pie
3881     ;;
3882     ?*)
3883         die "Unknown toolchain $toolchain"
3884     ;;
3885 esac
3886
3887 test -n "$cross_prefix" && enable cross_compile
3888
3889 if enabled cross_compile; then
3890     test -n "$arch" && test -n "$target_os" ||
3891         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
3892 fi
3893
3894 ar_default="${cross_prefix}${ar_default}"
3895 cc_default="${cross_prefix}${cc_default}"
3896 cxx_default="${cross_prefix}${cxx_default}"
3897 nm_default="${cross_prefix}${nm_default}"
3898 pkg_config_default="${cross_prefix}${pkg_config_default}"
3899 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
3900     ranlib_default="${cross_prefix}${ranlib_default} -D"
3901 else
3902     ranlib_default="${cross_prefix}${ranlib_default}"
3903 fi
3904 strip_default="${cross_prefix}${strip_default}"
3905 windres_default="${cross_prefix}${windres_default}"
3906
3907 sysinclude_default="${sysroot}/usr/include"
3908
3909 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3910     target_exec target_os x86asmexe nvcc
3911 enabled cross_compile || host_cc_default=$cc
3912 set_default host_cc
3913
3914 pkg_config_fail_message=""
3915 if ! $pkg_config --version >/dev/null 2>&1; then
3916     warn "$pkg_config not found, library detection may fail."
3917     pkg_config=false
3918 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
3919     pkg_config_fail_message="
3920 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
3921 fi
3922
3923 if test $doxygen != $doxygen_default && \
3924   ! $doxygen --version >/dev/null 2>&1; then
3925     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3926 fi
3927
3928 exesuf() {
3929     case $1 in
3930         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3931     esac
3932 }
3933
3934 EXESUF=$(exesuf $target_os)
3935 HOSTEXESUF=$(exesuf $host_os)
3936
3937 # set temporary file name
3938 : ${TMPDIR:=$TEMPDIR}
3939 : ${TMPDIR:=$TMP}
3940 : ${TMPDIR:=/tmp}
3941
3942 if [ -n "$tempprefix" ] ; then
3943     mktemp(){
3944         tmpname="$tempprefix.${HOSTNAME}.${UID}"
3945         echo "$tmpname"
3946         mkdir "$tmpname"
3947     }
3948 elif ! check_cmd mktemp -u XXXXXX; then
3949     # simple replacement for missing mktemp
3950     # NOT SAFE FOR GENERAL USE
3951     mktemp(){
3952         tmpname="${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3953         echo "$tmpname"
3954         mkdir "$tmpname"
3955     }
3956 fi
3957
3958 FFTMPDIR=$(mktemp -d "${TMPDIR}/ffconf.XXXXXXXX" 2> /dev/null) ||
3959     die "Unable to create temporary directory in $TMPDIR."
3960
3961 tmpfile(){
3962     tmp="${FFTMPDIR}/test"$2
3963     (set -C; exec > $tmp) 2> /dev/null ||
3964         die "Unable to create temporary file in $FFTMPDIR."
3965     eval $1=$tmp
3966 }
3967
3968 trap 'rm -rf -- "$FFTMPDIR"' EXIT
3969 trap 'exit 2' INT
3970
3971 tmpfile TMPASM .asm
3972 tmpfile TMPC   .c
3973 tmpfile TMPCPP .cpp
3974 tmpfile TMPE   $EXESUF
3975 tmpfile TMPH   .h
3976 tmpfile TMPM   .m
3977 tmpfile TMPO   .o
3978 tmpfile TMPS   .S
3979 tmpfile TMPSH  .sh
3980 tmpfile TMPV   .ver
3981
3982 unset -f mktemp
3983
3984 chmod +x $TMPE
3985
3986 # make sure we can execute files in $TMPDIR
3987 cat > $TMPSH 2>> $logfile <<EOF
3988 #! /bin/sh
3989 EOF
3990 chmod +x $TMPSH >> $logfile 2>&1
3991 if ! $TMPSH >> $logfile 2>&1; then
3992     cat <<EOF
3993 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3994 variable to another directory and make sure that it is not mounted noexec.
3995 EOF
3996     die "Sanity test failed."
3997 fi
3998
3999 armasm_flags(){
4000     for flag; do
4001         case $flag in
4002             # Filter out MSVC cl.exe options from cflags that shouldn't
4003             # be passed to gas-preprocessor
4004             -M[TD]*)                                            ;;
4005             *)                  echo $flag                      ;;
4006         esac
4007    done
4008 }
4009
4010 ccc_flags(){
4011     for flag; do
4012         case $flag in
4013             -std=c99)           echo -c99                       ;;
4014             -mcpu=*)            echo -arch ${flag#*=}           ;;
4015             -mieee)             echo -ieee                      ;;
4016             -O*|-fast)          echo $flag                      ;;
4017             -fno-math-errno)    echo -assume nomath_errno       ;;
4018             -g)                 echo -g3                        ;;
4019             -Wall)              echo -msg_enable level2         ;;
4020             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
4021             -Wl,*)              echo $flag                      ;;
4022             -f*|-W*)                                            ;;
4023             *)                  echo $flag                      ;;
4024         esac
4025    done
4026 }
4027
4028 cparser_flags(){
4029     for flag; do
4030         case $flag in
4031             -Wno-switch)             echo -Wno-switch-enum ;;
4032             -Wno-format-zero-length) ;;
4033             -Wdisabled-optimization) ;;
4034             -Wno-pointer-sign)       echo -Wno-other ;;
4035             *)                       echo $flag ;;
4036         esac
4037     done
4038 }
4039
4040 msvc_common_flags(){
4041     for flag; do
4042         case $flag in
4043             # In addition to specifying certain flags under the compiler
4044             # specific filters, they must be specified here as well or else the
4045             # generic catch all at the bottom will print the original flag.
4046             -Wall)                ;;
4047             -Wextra)              ;;
4048             -std=c99)             ;;
4049             # Common flags
4050             -fomit-frame-pointer) ;;
4051             -g)                   echo -Z7 ;;
4052             -fno-math-errno)      ;;
4053             -fno-common)          ;;
4054             -fno-signed-zeros)    ;;
4055             -fPIC)                ;;
4056             -mthumb)              ;;
4057             -march=*)             ;;
4058             -lz)                  echo zlib.lib ;;
4059             -lx264)               echo libx264.lib ;;
4060             -lstdc++)             ;;
4061             -l*)                  echo ${flag#-l}.lib ;;
4062             -LARGEADDRESSAWARE)   echo $flag ;;
4063             -L*)                  echo -libpath:${flag#-L} ;;
4064             *)                    echo $flag ;;
4065         esac
4066     done
4067 }
4068
4069 msvc_flags(){
4070     msvc_common_flags "$@"
4071     for flag; do
4072         case $flag in
4073             -Wall)                echo -W3 -wd4018 -wd4146 -wd4244 -wd4305     \
4074                                        -wd4554 ;;
4075             -Wextra)              echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
4076                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
4077                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
4078                                        -wd4307 \
4079                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
4080         esac
4081     done
4082 }
4083
4084 icl_flags(){
4085     msvc_common_flags "$@"
4086     for flag; do
4087         case $flag in
4088             # Despite what Intel's documentation says -Wall, which is supported
4089             # on Windows, does enable remarks so disable them here.
4090             -Wall)                echo $flag -Qdiag-disable:remark ;;
4091             -std=c99)             echo -Qstd=c99 ;;
4092             -flto)                echo -ipo ;;
4093         esac
4094     done
4095 }
4096
4097 icc_flags(){
4098     for flag; do
4099         case $flag in
4100             -flto)                echo -ipo ;;
4101             *)                    echo $flag ;;
4102         esac
4103     done
4104 }
4105
4106 pgi_flags(){
4107     for flag; do
4108         case $flag in
4109             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
4110             -fomit-frame-pointer) echo -Mnoframe ;;
4111             -g)                   echo -gopt ;;
4112             *)                    echo $flag ;;
4113         esac
4114     done
4115 }
4116
4117 suncc_flags(){
4118     for flag; do
4119         case $flag in
4120             -march=*|-mcpu=*)
4121                 case "${flag#*=}" in
4122                     native)                   echo -xtarget=native       ;;
4123                     v9|niagara)               echo -xarch=sparc          ;;
4124                     ultrasparc)               echo -xarch=sparcvis       ;;
4125                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
4126                     i586|pentium)             echo -xchip=pentium        ;;
4127                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
4128                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
4129                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
4130                     pentium4*)          echo -xtarget=pentium4           ;;
4131                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
4132                     *-sse3)             echo -xarch=sse3                 ;;
4133                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
4134                     bonnell)                   echo -xarch=ssse3         ;;
4135                     corei7|nehalem)            echo -xtarget=nehalem     ;;
4136                     westmere)                  echo -xtarget=westmere    ;;
4137                     silvermont)                echo -xarch=sse4_2        ;;
4138                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
4139                     core-avx*|ivybridge|haswell|broadwell|skylake*|knl)
4140                                                echo -xarch=avx           ;;
4141                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
4142                     btver1)                    echo -xarch=amdsse4a      ;;
4143                     btver2|bdver*|znver*)      echo -xarch=avx           ;;
4144                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
4145                     k8|opteron|athlon64|athlon-fx)
4146                                                echo -xarch=sse2a         ;;
4147                     athlon*)                   echo -xarch=pentium_proa  ;;
4148                 esac
4149                 ;;
4150             -std=c99)             echo -xc99              ;;
4151             -fomit-frame-pointer) echo -xregs=frameptr    ;;
4152             -fPIC)                echo -KPIC -xcode=pic32 ;;
4153             -W*,*)                echo $flag              ;;
4154             -f*-*|-W*|-mimpure-text)                      ;;
4155             -shared)              echo -G                 ;;
4156             *)                    echo $flag              ;;
4157         esac
4158     done
4159 }
4160
4161 tms470_flags(){
4162     for flag; do
4163         case $flag in
4164             -march=*|-mcpu=*)
4165                 case "${flag#*=}" in
4166                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
4167                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
4168                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
4169                     armv6*|arm11*)          echo -mv=6   ;;
4170                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
4171                                             echo -mv=5e  ;;
4172                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
4173                 esac
4174                 ;;
4175             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
4176             -mfpu=vfp)      echo --float_support=vfpv2        ;;
4177             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
4178             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
4179             -msoft-float)   echo --float_support=vfplib       ;;
4180             -O[0-3]|-mf=*)  echo $flag                        ;;
4181             -g)             echo -g -mn                       ;;
4182             -pds=*)         echo $flag                        ;;
4183             -D*|-I*)        echo $flag                        ;;
4184             --gcc|--abi=*)  echo $flag                        ;;
4185             -me)            echo $flag                        ;;
4186         esac
4187     done
4188 }
4189
4190 probe_cc(){
4191     pfx=$1
4192     _cc=$2
4193     first=$3
4194
4195     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
4196     unset _ld_o _ldflags _ld_lib _ld_path
4197     unset _depflags _DEPCMD _DEPFLAGS
4198     _flags_filter=echo
4199
4200     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
4201         true # no-op to avoid reading stdin in following checks
4202     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
4203         _type=llvm_gcc
4204         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
4205         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
4206         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4207         _cflags_speed='-O3'
4208         _cflags_size='-Os'
4209     elif $_cc -v 2>&1 | grep -qi ^gcc; then
4210         _type=gcc
4211         gcc_version=$($_cc --version | head -n1)
4212         gcc_basever=$($_cc -dumpversion)
4213         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
4214         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
4215         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
4216         case $gcc_basever in
4217             2) ;;
4218             2.*) ;;
4219             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
4220         esac
4221         if [ "$first" = true ]; then
4222             case $gcc_basever in
4223                 4.2*)
4224                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
4225             esac
4226         fi
4227         _cflags_speed='-O3'
4228         _cflags_size='-Os'
4229     elif $_cc --version 2>/dev/null | grep -q ^icc; then
4230         _type=icc
4231         _ident=$($_cc --version | head -n1)
4232         _depflags='-MMD'
4233         _cflags_speed='-O3'
4234         _cflags_size='-Os'
4235         _cflags_noopt='-O1'
4236         _flags_filter=icc_flags
4237     elif $_cc -v 2>&1 | grep -q xlc; then
4238         _type=xlc
4239         _ident=$($_cc -qversion 2>/dev/null | head -n1)
4240         _cflags_speed='-O5'
4241         _cflags_size='-O5 -qcompact'
4242     elif $_cc -V 2>/dev/null | grep -q Compaq; then
4243         _type=ccc
4244         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
4245         _DEPFLAGS='-M'
4246         _cflags_speed='-fast'
4247         _cflags_size='-O1'
4248         _flags_filter=ccc_flags
4249     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
4250         test -d "$sysroot" || die "No valid sysroot specified."
4251         _type=armcc
4252         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
4253         armcc_conf="$PWD/armcc.conf"
4254         $_cc --arm_linux_configure                 \
4255              --arm_linux_config_file="$armcc_conf" \
4256              --configure_sysroot="$sysroot"        \
4257              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
4258              die "Error creating armcc configuration file."
4259         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
4260         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
4261         as_default="${cross_prefix}gcc"
4262         _depflags='-MMD'
4263         _cflags_speed='-O3'
4264         _cflags_size='-Os'
4265     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
4266         _type=tms470
4267         _ident=$($_cc -version | head -n1 | tr -s ' ')
4268         _flags='--gcc --abi=eabi -me'
4269         _cc_e='-ppl -fe=$@'
4270         _cc_o='-fe=$@'
4271         _depflags='-ppa -ppd=$(@:.o=.d)'
4272         _cflags_speed='-O3 -mf=5'
4273         _cflags_size='-O3 -mf=2'
4274         _flags_filter=tms470_flags
4275     elif $_cc -v 2>&1 | grep -q clang; then
4276         _type=clang
4277         _ident=$($_cc --version 2>/dev/null | head -n1)
4278         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4279         _cflags_speed='-O3'
4280         _cflags_size='-Oz'
4281     elif $_cc -V 2>&1 | grep -q Sun; then
4282         _type=suncc
4283         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
4284         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
4285         _DEPFLAGS='-xM1 -xc99'
4286         _ldflags='-std=c99'
4287         _cflags_speed='-O5'
4288         _cflags_size='-O5 -xspace'
4289         _flags_filter=suncc_flags
4290     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
4291         _type=pathscale
4292         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4293         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4294         _cflags_speed='-O2'
4295         _cflags_size='-Os'
4296         _flags_filter='filter_out -Wdisabled-optimization'
4297     elif $_cc -v 2>&1 | grep -q Open64; then
4298         _type=open64
4299         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4300         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4301         _cflags_speed='-O2'
4302         _cflags_size='-Os'
4303         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
4304     elif $_cc -V 2>&1 | grep -q Portland; then
4305         _type=pgi
4306         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
4307         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
4308         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
4309         _cflags_size="-O2 -Munroll=c:1 $opt_common"
4310         _cflags_noopt="-O"
4311         _flags_filter=pgi_flags
4312     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
4313         _type=armasm
4314         _ident=$($_cc | head -n1)
4315         # 4509: "This form of conditional instruction is deprecated"
4316         _flags="-nologo -ignore 4509"
4317         _flags_filter=armasm_flags
4318     elif $_cc 2>&1 | grep -q Intel; then
4319         _type=icl
4320         _ident=$($_cc 2>&1 | head -n1)
4321         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
4322         # Not only is O3 broken on 13.x+ but it is slower on all previous
4323         # versions (tested) as well.
4324         _cflags_speed="-O2"
4325         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
4326         if $_cc 2>&1 | grep -q Linker; then
4327             _ld_o='-out:$@'
4328         else
4329             _ld_o='-Fe$@'
4330         fi
4331         _cc_o='-Fo$@'
4332         _cc_e='-P'
4333         _flags_filter=icl_flags
4334         _ld_lib='lib%.a'
4335         _ld_path='-libpath:'
4336         # -Qdiag-error to make icl error when seeing certain unknown arguments
4337         _flags='-nologo -Qdiag-error:4044,10157'
4338         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
4339         # with MSVC which enables it by default.
4340         _cflags='-Qms0 -Qvec- -Qsimd- -GS -fp:precise'
4341         disable stripping
4342     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
4343         # lld can emulate multiple different linkers; in ms link.exe mode,
4344         # the -? parameter gives the help output which contains an identifyable
4345         # string, while it gives an error in other modes.
4346         _type=lld-link
4347         # The link.exe mode doesn't have a switch for getting the version,
4348         # but we can force it back to gnu mode and get the version from there.
4349         _ident=$($_cc -flavor gnu --version 2>/dev/null)
4350         _ld_o='-out:$@'
4351         _flags_filter=msvc_flags
4352         _ld_lib='lib%.a'
4353         _ld_path='-libpath:'
4354     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
4355         _type=msvc
4356         _ident=$($_cc 2>&1 | head -n1)
4357         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
4358         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
4359         _cflags_speed="-O2"
4360         _cflags_size="-O1"
4361         _cflags_noopt="-O1"
4362         if $_cc -nologo- 2>&1 | grep -q Linker; then
4363             _ld_o='-out:$@'
4364         else
4365             _ld_o='-Fe$@'
4366         fi
4367         _cc_o='-Fo$@'
4368         _cc_e='-P -Fi$@'
4369         _flags_filter=msvc_flags
4370         _ld_lib='lib%.a'
4371         _ld_path='-libpath:'
4372         _flags='-nologo'
4373         disable stripping
4374     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
4375         _type=cparser
4376         _ident=$($_cc --version | head -n1)
4377         _depflags='-MMD'
4378         _cflags_speed='-O4'
4379         _cflags_size='-O2'
4380         _flags_filter=cparser_flags
4381     fi
4382
4383     eval ${pfx}_type=\$_type
4384     eval ${pfx}_ident=\$_ident
4385 }
4386
4387 set_ccvars(){
4388     eval ${1}_C=\${_cc_c-\${${1}_C}}
4389     eval ${1}_E=\${_cc_e-\${${1}_E}}
4390     eval ${1}_O=\${_cc_o-\${${1}_O}}
4391
4392     if [ -n "$_depflags" ]; then
4393         eval ${1}_DEPFLAGS=\$_depflags
4394     else
4395         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
4396         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
4397         eval DEP${1}FLAGS=\$_flags
4398     fi
4399 }
4400
4401 probe_cc cc "$cc" "true"
4402 cflags_filter=$_flags_filter
4403 cflags_speed=$_cflags_speed
4404 cflags_size=$_cflags_size
4405 cflags_noopt=$_cflags_noopt
4406 add_cflags $_flags $_cflags
4407 cc_ldflags=$_ldflags
4408 set_ccvars CC
4409 set_ccvars CXX
4410
4411 probe_cc hostcc "$host_cc"
4412 host_cflags_filter=$_flags_filter
4413 host_cflags_speed=$_cflags_speed
4414 add_host_cflags  $_flags $_cflags
4415 set_ccvars HOSTCC
4416
4417 test -n "$cc_type" && enable $cc_type ||
4418     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4419
4420 : ${as_default:=$cc}
4421 : ${objcc_default:=$cc}
4422 : ${dep_cc_default:=$cc}
4423 : ${ld_default:=$cc}
4424 : ${host_ld_default:=$host_cc}
4425 set_default ar as objcc dep_cc ld ln_s host_ld windres
4426
4427 probe_cc as "$as"
4428 asflags_filter=$_flags_filter
4429 add_asflags $_flags $_cflags
4430 set_ccvars AS
4431
4432 probe_cc objcc "$objcc"
4433 objcflags_filter=$_flags_filter
4434 add_objcflags $_flags $_cflags
4435 set_ccvars OBJC
4436
4437 probe_cc ld "$ld"
4438 ldflags_filter=$_flags_filter
4439 add_ldflags $_flags $_ldflags
4440 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4441 LD_O=${_ld_o-$LD_O}
4442 LD_LIB=${_ld_lib-$LD_LIB}
4443 LD_PATH=${_ld_path-$LD_PATH}
4444
4445 probe_cc hostld "$host_ld"
4446 host_ldflags_filter=$_flags_filter
4447 add_host_ldflags $_flags $_ldflags
4448 HOSTLD_O=${_ld_o-$HOSTLD_O}
4449
4450 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4451     probe_cc depcc "$dep_cc"
4452     CCDEP=${_DEPCMD:-$DEPCMD}
4453     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4454     DEPCCFLAGS=$_flags
4455 fi
4456
4457 if $ar 2>&1 | grep -q Microsoft; then
4458     arflags="-nologo"
4459     ar_o='-out:$@'
4460 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
4461     arflags="rq"
4462     ar_o='$@'
4463 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
4464     arflags='-Xany -r -c'
4465     ar_o='$@'
4466 elif $ar 2>&1 | grep -q "\[D\] "; then
4467     arflags="rcD"
4468     ar_o='$@'
4469 else
4470     arflags="rc"
4471     ar_o='$@'
4472 fi
4473
4474 add_cflags $extra_cflags
4475 add_cxxflags $extra_cxxflags
4476 add_objcflags $extra_objcflags
4477 add_asflags $extra_cflags
4478
4479 if test -n "$sysroot"; then
4480     case "$cc_type" in
4481         gcc|llvm_gcc|clang)
4482             add_cppflags --sysroot="$sysroot"
4483             add_ldflags --sysroot="$sysroot"
4484 # On Darwin --sysroot may be ignored, -isysroot always affects headers and linking
4485             add_cppflags -isysroot "$sysroot"
4486             add_ldflags -isysroot "$sysroot"
4487         ;;
4488         tms470)
4489             add_cppflags -I"$sysinclude"
4490             add_ldflags  --sysroot="$sysroot"
4491         ;;
4492     esac
4493 fi
4494
4495 if test "$cpu" = host; then
4496     enabled cross_compile &&
4497         die "--cpu=host makes no sense when cross-compiling."
4498
4499     case "$cc_type" in
4500         gcc|llvm_gcc)
4501             check_native(){
4502                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4503                 sed -n "/cc1.*$1=/{
4504                             s/.*$1=\\([^ ]*\\).*/\\1/
4505                             p
4506                             q
4507                         }" $TMPE
4508             }
4509             cpu=$(check_native -march || check_native -mcpu)
4510         ;;
4511         clang)
4512             check_native(){
4513                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4514                 sed -n "/cc1.*-target-cpu /{
4515                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4516                             p
4517                             q
4518                         }" $TMPE
4519             }
4520             cpu=$(check_native -march)
4521         ;;
4522     esac
4523
4524     test "${cpu:-host}" = host &&
4525         die "--cpu=host not supported with compiler $cc"
4526 fi
4527
4528 # Deal with common $arch aliases
4529 case "$arch" in
4530     aarch64|arm64)
4531         arch="aarch64"
4532     ;;
4533     arm*|iPad*|iPhone*)
4534         arch="arm"
4535     ;;
4536     mips*|IP*)
4537         case "$arch" in
4538         *el)
4539             add_cppflags -EL
4540             add_ldflags -EL
4541         ;;
4542         *eb)
4543             add_cppflags -EB
4544             add_ldflags -EB
4545         ;;
4546         esac
4547         arch="mips"
4548     ;;
4549     parisc*|hppa*)
4550         arch="parisc"
4551     ;;
4552     "Power Macintosh"|ppc*|powerpc*)
4553         arch="ppc"
4554     ;;
4555     s390|s390x)
4556         arch="s390"
4557     ;;
4558     sh4|sh)
4559         arch="sh4"
4560     ;;
4561     sun4*|sparc*)
4562         arch="sparc"
4563     ;;
4564     tilegx|tile-gx)
4565         arch="tilegx"
4566     ;;
4567     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4568         arch="x86"
4569     ;;
4570 esac
4571
4572 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4573 enable $arch
4574
4575 # Add processor-specific flags
4576 if enabled aarch64; then
4577
4578     case $cpu in
4579         armv*)
4580             cpuflags="-march=$cpu"
4581         ;;
4582         *)
4583             cpuflags="-mcpu=$cpu"
4584         ;;
4585     esac
4586
4587 elif enabled alpha; then
4588
4589     cpuflags="-mcpu=$cpu"
4590
4591 elif enabled arm; then
4592
4593     check_arm_arch() {
4594         check_cpp_condition stddef.h \
4595             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4596             $cpuflags
4597     }
4598
4599     probe_arm_arch() {
4600         if   check_arm_arch 4;        then echo armv4
4601         elif check_arm_arch 4T;       then echo armv4t
4602         elif check_arm_arch 5;        then echo armv5
4603         elif check_arm_arch 5E;       then echo armv5e
4604         elif check_arm_arch 5T;       then echo armv5t
4605         elif check_arm_arch 5TE;      then echo armv5te
4606         elif check_arm_arch 5TEJ;     then echo armv5te
4607         elif check_arm_arch 6;        then echo armv6
4608         elif check_arm_arch 6J;       then echo armv6j
4609         elif check_arm_arch 6K;       then echo armv6k
4610         elif check_arm_arch 6Z;       then echo armv6z
4611         elif check_arm_arch 6ZK;      then echo armv6zk
4612         elif check_arm_arch 6T2;      then echo armv6t2
4613         elif check_arm_arch 7;        then echo armv7
4614         elif check_arm_arch 7A  7_A;  then echo armv7-a
4615         elif check_arm_arch 7S;       then echo armv7-a
4616         elif check_arm_arch 7R  7_R;  then echo armv7-r
4617         elif check_arm_arch 7M  7_M;  then echo armv7-m
4618         elif check_arm_arch 7EM 7E_M; then echo armv7-m
4619         elif check_arm_arch 8A  8_A;  then echo armv8-a
4620         fi
4621     }
4622
4623     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4624
4625     case $cpu in
4626         armv*)
4627             cpuflags="-march=$cpu"
4628             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4629         ;;
4630         *)
4631             cpuflags="-mcpu=$cpu"
4632             case $cpu in
4633                 cortex-a*)                               subarch=armv7a  ;;
4634                 cortex-r*)                               subarch=armv7r  ;;
4635                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4636                 arm11*)                                  subarch=armv6   ;;
4637                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4638                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4639                 *)                             subarch=$(probe_arm_arch) ;;
4640             esac
4641         ;;
4642     esac
4643
4644     case "$subarch" in
4645         armv5t*)    enable fast_clz                ;;
4646         armv[6-8]*)
4647             enable fast_clz
4648             disabled fast_unaligned || enable fast_unaligned
4649             ;;
4650     esac
4651
4652 elif enabled avr32; then
4653
4654     case $cpu in
4655         ap7[02]0[0-2])
4656             subarch="avr32_ap"
4657             cpuflags="-mpart=$cpu"
4658         ;;
4659         ap)
4660             subarch="avr32_ap"
4661             cpuflags="-march=$cpu"
4662         ;;
4663         uc3[ab]*)
4664             subarch="avr32_uc"
4665             cpuflags="-mcpu=$cpu"
4666         ;;
4667         uc)
4668             subarch="avr32_uc"
4669             cpuflags="-march=$cpu"
4670         ;;
4671     esac
4672
4673 elif enabled bfin; then
4674
4675     cpuflags="-mcpu=$cpu"
4676
4677 elif enabled mips; then
4678
4679     cpuflags="-march=$cpu"
4680
4681     if [ "$cpu" != "generic" ]; then
4682         disable mips32r2
4683         disable mips32r5
4684         disable mips64r2
4685         disable mips32r6
4686         disable mips64r6
4687         disable loongson2
4688         disable loongson3
4689
4690         case $cpu in
4691             24kc|24kf*|24kec|34kc|1004kc|24kef*|34kf*|1004kf*|74kc|74kf)
4692                 enable mips32r2
4693                 disable msa
4694             ;;
4695             p5600|i6400|p6600)
4696                 disable mipsdsp
4697                 disable mipsdspr2
4698             ;;
4699             loongson*)
4700                 enable loongson2
4701                 enable loongson3
4702                 enable local_aligned_8 local_aligned_16 local_aligned_32
4703                 enable simd_align_16
4704                 enable fast_64bit
4705                 enable fast_clz
4706                 enable fast_cmov
4707                 enable fast_unaligned
4708                 disable aligned_stack
4709                 disable mipsfpu
4710                 disable mipsdsp
4711                 disable mipsdspr2
4712                 case $cpu in
4713                     loongson3*)
4714                         cpuflags="-march=loongson3a -mhard-float -fno-expensive-optimizations"
4715                     ;;
4716                     loongson2e)
4717                         cpuflags="-march=loongson2e -mhard-float -fno-expensive-optimizations"
4718                     ;;
4719                     loongson2f)
4720                         cpuflags="-march=loongson2f -mhard-float -fno-expensive-optimizations"
4721                     ;;
4722                 esac
4723             ;;
4724             *)
4725                 # Unknown CPU. Disable everything.
4726                 warn "unknown CPU. Disabling all MIPS optimizations."
4727                 disable mipsfpu
4728                 disable mipsdsp
4729                 disable mipsdspr2
4730                 disable msa
4731                 disable mmi
4732             ;;
4733         esac
4734
4735         case $cpu in
4736             24kc)
4737                 disable mipsfpu
4738                 disable mipsdsp
4739                 disable mipsdspr2
4740             ;;
4741             24kf*)
4742                 disable mipsdsp
4743                 disable mipsdspr2
4744             ;;
4745             24kec|34kc|1004kc)
4746                 disable mipsfpu
4747                 disable mipsdspr2
4748             ;;
4749             24kef*|34kf*|1004kf*)
4750                 disable mipsdspr2
4751             ;;
4752             74kc)
4753                 disable mipsfpu
4754             ;;
4755             p5600)
4756                 enable mips32r5
4757                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
4758             ;;
4759             i6400)
4760                 enable mips64r6
4761                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4762             ;;
4763             p6600)
4764                 enable mips64r6
4765                 check_cflags "-mtune=p6600 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4766             ;;
4767         esac
4768     else
4769         # We do not disable anything. Is up to the user to disable the unwanted features.
4770         warn 'generic cpu selected'
4771     fi
4772
4773 elif enabled ppc; then
4774
4775     disable ldbrx
4776
4777     case $(tolower $cpu) in
4778         601|ppc601|powerpc601)
4779             cpuflags="-mcpu=601"
4780             disable altivec
4781         ;;
4782         603*|ppc603*|powerpc603*)
4783             cpuflags="-mcpu=603"
4784             disable altivec
4785         ;;
4786         604*|ppc604*|powerpc604*)
4787             cpuflags="-mcpu=604"
4788             disable altivec
4789         ;;
4790         g3|75*|ppc75*|powerpc75*)
4791             cpuflags="-mcpu=750"
4792             disable altivec
4793         ;;
4794         g4|745*|ppc745*|powerpc745*)
4795             cpuflags="-mcpu=7450"
4796             disable vsx
4797         ;;
4798         74*|ppc74*|powerpc74*)
4799             cpuflags="-mcpu=7400"
4800             disable vsx
4801         ;;
4802         g5|970|ppc970|powerpc970)
4803             cpuflags="-mcpu=970"
4804             disable vsx
4805         ;;
4806         power[3-6]*)
4807             cpuflags="-mcpu=$cpu"
4808             disable vsx
4809         ;;
4810         power[7-8]*)
4811             cpuflags="-mcpu=$cpu"
4812         ;;
4813         cell)
4814             cpuflags="-mcpu=cell"
4815             enable ldbrx
4816             disable vsx
4817         ;;
4818         e500mc)
4819             cpuflags="-mcpu=e500mc"
4820             disable altivec
4821         ;;
4822         e500v2)
4823             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
4824             disable altivec
4825             disable dcbzl
4826         ;;
4827         e500)
4828             cpuflags="-mcpu=8540 -mhard-float"
4829             disable altivec
4830             disable dcbzl
4831         ;;
4832     esac
4833
4834 elif enabled sparc; then
4835
4836     case $cpu in
4837         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
4838             cpuflags="-mcpu=$cpu"
4839         ;;
4840         ultrasparc*|niagara[234])
4841             cpuflags="-mcpu=$cpu"
4842         ;;
4843     esac
4844
4845 elif enabled x86; then
4846
4847     case $cpu in
4848         i[345]86|pentium)
4849             cpuflags="-march=$cpu"
4850             disable i686
4851             disable mmx
4852         ;;
4853         # targets that do NOT support nopl and conditional mov (cmov)
4854         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
4855             cpuflags="-march=$cpu"
4856             disable i686
4857         ;;
4858         # targets that do support nopl and conditional mov (cmov)
4859         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
4860         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|skylake*|knl\
4861         |amdfam10|barcelona|b[dt]ver*|znver*)
4862             cpuflags="-march=$cpu"
4863             enable i686
4864             enable fast_cmov
4865         ;;
4866         # targets that do support conditional mov but on which it's slow
4867         pentium4|pentium4m|prescott|nocona)
4868             cpuflags="-march=$cpu"
4869             enable i686
4870             disable fast_cmov
4871         ;;
4872     esac
4873
4874 fi
4875
4876 if [ "$cpu" != generic ]; then
4877     add_cflags  $cpuflags
4878     add_asflags $cpuflags
4879     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
4880 fi
4881
4882 # compiler sanity check
4883 check_exec <<EOF
4884 int main(void){ return 0; }
4885 EOF
4886 if test "$?" != 0; then
4887     echo "$cc is unable to create an executable file."
4888     if test -z "$cross_prefix" && ! enabled cross_compile ; then
4889         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
4890         echo "Only do this if you know what cross compiling means."
4891     fi
4892     die "C compiler test failed."
4893 fi
4894
4895 add_cppflags -D_ISOC99_SOURCE
4896 add_cxxflags -D__STDC_CONSTANT_MACROS
4897 check_cxxflags -std=c++11 || check_cxxflags -std=c++0x
4898
4899 # some compilers silently accept -std=c11, so we also need to check that the
4900 # version macro is defined properly
4901 test_cflags_cc