Merge commit '68649bfed30a35dc3e45ea240541b2774b2f282b'
[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   --enable-jni             enable JNI support [no]
221   --enable-ladspa          enable LADSPA audio filtering [no]
222   --enable-libass          enable libass subtitles rendering,
223                            needed for subtitles and ass filter [no]
224   --enable-libbluray       enable BluRay reading using libbluray [no]
225   --enable-libbs2b         enable bs2b DSP library [no]
226   --enable-libcaca         enable textual display using libcaca [no]
227   --enable-libcelt         enable CELT decoding via libcelt [no]
228   --enable-libcdio         enable audio CD grabbing with libcdio [no]
229   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
230                            and libraw1394 [no]
231   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
232   --enable-libflite        enable flite (voice synthesis) support via libflite [no]
233   --enable-libfontconfig   enable libfontconfig, useful for drawtext filter [no]
234   --enable-libfreetype     enable libfreetype, needed for drawtext filter [no]
235   --enable-libfribidi      enable libfribidi, improves drawtext filter [no]
236   --enable-libgme          enable Game Music Emu via libgme [no]
237   --enable-libgsm          enable GSM de/encoding via libgsm [no]
238   --enable-libiec61883     enable iec61883 via libiec61883 [no]
239   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
240   --enable-libjack         enable JACK audio sound server [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-nvdec          disable Nvidia video decoding acceleration (via hwaccel) [autodetect]
317   --disable-nvenc          disable Nvidia video encoding code [autodetect]
318   --enable-omx             enable OpenMAX IL code [no]
319   --enable-omx-rpi         enable OpenMAX IL code for Raspberry Pi [no]
320   --enable-rkmpp           enable Rockchip Media Process Platform code [no]
321   --disable-vaapi          disable Video Acceleration API (mainly Unix/Intel) 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 [$LDEXEFLAGS]
369   --extra-ldsoflags=ELDFLAGS add ELDFLAGS to LDSOFLAGS [$LDSOFLAGS]
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_sanitized(){
589     var=$1
590     shift
591     eval $(sanitize_var_name "$var")='$*'
592 }
593
594 get_sanitized(){
595     eval echo \$$(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_sanitized(){
641     for var; do
642         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
643     done
644 }
645
646 disable_sanitized(){
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_ldsoflags(){
874     append LDSOFLAGS $($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     headers=$1
1111     shift
1112     disable_sanitized $headers
1113     {
1114         for hdr in $headers; do
1115             print_include $hdr
1116         done
1117         echo "int x;"
1118     } | check_cpp "$@" && enable_sanitized $headers
1119 }
1120
1121 check_header_objcc(){
1122     log check_header_objcc "$@"
1123     rm -f -- "$TMPO"
1124     header=$1
1125     shift
1126     disable_sanitized $header
1127     {
1128        echo "#include <$header>"
1129        echo "int main(void) { return 0; }"
1130     } | check_objcc && check_stat "$TMPO" && enable_sanitized $header
1131 }
1132
1133 check_apple_framework(){
1134     log check_apple_framework "$@"
1135     framework="$1"
1136     name="$(tolower $framework)"
1137     header="${framework}/${framework}.h"
1138     disable $name
1139     check_header_objcc $header &&
1140         enable $name && eval ${name}_extralibs='"-framework $framework"'
1141 }
1142
1143 check_func(){
1144     log check_func "$@"
1145     func=$1
1146     shift
1147     disable $func
1148     check_ld "cc" "$@" <<EOF && enable $func
1149 extern int $func();
1150 int main(void){ $func(); }
1151 EOF
1152 }
1153
1154 check_complexfunc(){
1155     log check_complexfunc "$@"
1156     func=$1
1157     narg=$2
1158     shift 2
1159     test $narg = 2 && args="f, g" || args="f * I"
1160     disable $func
1161     check_ld "cc" "$@" <<EOF && enable $func
1162 #include <complex.h>
1163 #include <math.h>
1164 float foo(complex float f, complex float g) { return $func($args); }
1165 int main(void){ return (int) foo; }
1166 EOF
1167 }
1168
1169 check_mathfunc(){
1170     log check_mathfunc "$@"
1171     func=$1
1172     narg=$2
1173     shift 2
1174     test $narg = 2 && args="f, g" || args="f"
1175     disable $func
1176     check_ld "cc" "$@" <<EOF && enable $func
1177 #include <math.h>
1178 float foo(float f, float g) { return $func($args); }
1179 int main(void){ return (int) foo; }
1180 EOF
1181 }
1182
1183 check_func_headers(){
1184     log check_func_headers "$@"
1185     headers=$1
1186     funcs=$2
1187     shift 2
1188     {
1189         for hdr in $headers; do
1190             print_include $hdr
1191         done
1192         echo "#include <stdint.h>"
1193         for func in $funcs; do
1194             echo "long check_$func(void) { return (long) $func; }"
1195         done
1196         echo "int main(void) { int ret = 0;"
1197         # LTO could optimize out the test functions without this
1198         for func in $funcs; do
1199             echo " ret |= ((intptr_t)check_$func) & 0xFFFF;"
1200         done
1201         echo "return ret; }"
1202     } | check_ld "cc" "$@" && enable $funcs && enable_sanitized $headers
1203 }
1204
1205 check_class_headers_cpp(){
1206     log check_class_headers_cpp "$@"
1207     headers=$1
1208     classes=$2
1209     shift 2
1210     {
1211         for hdr in $headers; do
1212             echo "#include <$hdr>"
1213         done
1214         echo "int main(void) { "
1215         i=1
1216         for class in $classes; do
1217             echo "$class obj$i;"
1218             i=$(expr $i + 1)
1219         done
1220         echo "return 0; }"
1221     } | check_ld "cxx" "$@" && enable $funcs && enable_sanitized $headers
1222 }
1223
1224 check_cpp_condition(){
1225     log check_cpp_condition "$@"
1226     header=$1
1227     condition=$2
1228     shift 2
1229     check_cpp "$@" <<EOF
1230 #include <$header>
1231 #if !($condition)
1232 #error "unsatisfied condition: $condition"
1233 #endif
1234 EOF
1235 }
1236
1237 test_cflags_cc(){
1238     log test_cflags_cc "$@"
1239     flags=$1
1240     header=$2
1241     condition=$3
1242     shift 3
1243     set -- $($cflags_filter "$flags")
1244     check_cc "$@" <<EOF
1245 #include <$header>
1246 #if !($condition)
1247 #error "unsatisfied condition: $condition"
1248 #endif
1249 EOF
1250 }
1251
1252 check_lib(){
1253     log check_lib "$@"
1254     name="$1"
1255     headers="$2"
1256     funcs="$3"
1257     shift 3
1258     disable $name
1259     check_func_headers "$headers" "$funcs" "$@" &&
1260         enable $name && eval ${name}_extralibs="\$@"
1261 }
1262
1263 check_lib_cpp(){
1264     log check_lib_cpp "$@"
1265     name="$1"
1266     headers="$2"
1267     classes="$3"
1268     shift 3
1269     disable $name
1270     check_class_headers_cpp "$headers" "$classes" "$@" &&
1271         enable $name && eval ${name}_extralibs="\$@"
1272 }
1273
1274 test_pkg_config(){
1275     log test_pkg_config "$@"
1276     name="$1"
1277     pkg_version="$2"
1278     pkg="${2%% *}"
1279     headers="$3"
1280     funcs="$4"
1281     shift 4
1282     disable $name
1283     check_cmd $pkg_config --exists --print-errors $pkg_version || return
1284     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1285     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1286     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1287         enable $name &&
1288         set_sanitized "${name}_cflags"    $pkg_cflags &&
1289         set_sanitized "${name}_extralibs" $pkg_libs
1290 }
1291
1292 check_pkg_config(){
1293     log check_pkg_config "$@"
1294     name="$1"
1295     test_pkg_config "$@" &&
1296         eval add_cflags \$${name}_cflags
1297 }
1298
1299 check_exec(){
1300     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1301 }
1302
1303 check_exec_crash(){
1304     log check_exec_crash "$@"
1305     code=$(cat)
1306
1307     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1308     # are safe but may not be available everywhere.  Thus we use
1309     # raise(SIGTERM) instead.  The check is run in a subshell so we
1310     # can redirect the "Terminated" message from the shell.  SIGBUS
1311     # is not defined by standard C so it is used conditionally.
1312
1313     (check_exec "$@") >> $logfile 2>&1 <<EOF
1314 #include <signal.h>
1315 static void sighandler(int sig){
1316     raise(SIGTERM);
1317 }
1318 int foo(void){
1319     $code
1320 }
1321 int (*func_ptr)(void) = foo;
1322 int main(void){
1323     signal(SIGILL, sighandler);
1324     signal(SIGFPE, sighandler);
1325     signal(SIGSEGV, sighandler);
1326 #ifdef SIGBUS
1327     signal(SIGBUS, sighandler);
1328 #endif
1329     return func_ptr();
1330 }
1331 EOF
1332 }
1333
1334 check_type(){
1335     log check_type "$@"
1336     headers=$1
1337     type=$2
1338     shift 2
1339     disable_sanitized "$type"
1340     check_code cc "$headers" "$type v" "$@" && enable_sanitized "$type"
1341 }
1342
1343 check_struct(){
1344     log check_struct "$@"
1345     headers=$1
1346     struct=$2
1347     member=$3
1348     shift 3
1349     disable_sanitized "${struct}_${member}"
1350     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1351         enable_sanitized "${struct}_${member}"
1352 }
1353
1354 check_builtin(){
1355     log check_builtin "$@"
1356     name=$1
1357     headers=$2
1358     builtin=$3
1359     shift 3
1360     disable "$name"
1361     check_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1362 }
1363
1364 check_compile_assert(){
1365     log check_compile_assert "$@"
1366     name=$1
1367     headers=$2
1368     condition=$3
1369     shift 3
1370     disable "$name"
1371     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1372 }
1373
1374 require(){
1375     log require "$@"
1376     name_version="$1"
1377     name="${1%% *}"
1378     headers="$2"
1379     func="$3"
1380     shift 3
1381     check_lib $name "$headers" $func "$@" || die "ERROR: $name_version not found"
1382 }
1383
1384 require_cpp(){
1385     name="$1"
1386     headers="$2"
1387     classes="$3"
1388     shift 3
1389     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1390 }
1391
1392 require_header(){
1393     log require "$@"
1394     headers="$1"
1395     shift
1396     check_header "$headers" "$@" || die "ERROR: $headers not found"
1397 }
1398
1399 require_cpp_condition(){
1400     log require "$@"
1401     header="$1"
1402     condition="$2"
1403     shift 2
1404     check_cpp_condition "$header" "$condition" "$@" || die "ERROR: $condition not satisfied"
1405 }
1406
1407 require_pkg_config(){
1408     log require_pkg_config "$@"
1409     pkg_version="$2"
1410     check_pkg_config "$@" || die "ERROR: $pkg_version not found using pkg-config$pkg_config_fail_message"
1411 }
1412
1413 hostcc_e(){
1414     eval printf '%s\\n' $HOSTCC_E
1415 }
1416
1417 hostcc_o(){
1418     eval printf '%s\\n' $HOSTCC_O
1419 }
1420
1421 check_host_cc(){
1422     log check_host_cc "$@"
1423     cat > $TMPC
1424     log_file $TMPC
1425     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1426 }
1427
1428 check_host_cpp(){
1429     log check_host_cpp "$@"
1430     cat > $TMPC
1431     log_file $TMPC
1432     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1433 }
1434
1435 check_host_cppflags(){
1436     log check_host_cppflags "$@"
1437     check_host_cpp "$@" <<EOF && append host_cppflags "$@"
1438 #include <stdlib.h>
1439 EOF
1440 }
1441
1442 check_host_cflags(){
1443     log check_host_cflags "$@"
1444     set -- $($host_cflags_filter "$@")
1445     check_host_cc "$@" <<EOF && append host_cflags "$@"
1446 int x;
1447 EOF
1448 }
1449
1450 check_host_cpp_condition(){
1451     log check_host_cpp_condition "$@"
1452     header=$1
1453     condition=$2
1454     shift 2
1455     check_host_cpp "$@" <<EOF
1456 #include <$header>
1457 #if !($condition)
1458 #error "unsatisfied condition: $condition"
1459 #endif
1460 EOF
1461 }
1462
1463 cp_if_changed(){
1464     cmp -s "$1" "$2" && { test "$quiet" != "yes" && echo "$2 is unchanged"; } && return
1465     mkdir -p "$(dirname $2)"
1466     cp -f "$1" "$2"
1467 }
1468
1469 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1470 # system-dependent things.
1471
1472 AVCODEC_COMPONENTS="
1473     bsfs
1474     decoders
1475     encoders
1476     hwaccels
1477     parsers
1478 "
1479
1480 AVDEVICE_COMPONENTS="
1481     indevs
1482     outdevs
1483 "
1484
1485 AVFILTER_COMPONENTS="
1486     filters
1487 "
1488
1489 AVFORMAT_COMPONENTS="
1490     demuxers
1491     muxers
1492     protocols
1493 "
1494
1495 COMPONENT_LIST="
1496     $AVCODEC_COMPONENTS
1497     $AVDEVICE_COMPONENTS
1498     $AVFILTER_COMPONENTS
1499     $AVFORMAT_COMPONENTS
1500 "
1501
1502 EXAMPLE_LIST="
1503     avio_dir_cmd_example
1504     avio_reading_example
1505     decode_audio_example
1506     decode_video_example
1507     demuxing_decoding_example
1508     encode_audio_example
1509     encode_video_example
1510     extract_mvs_example
1511     filter_audio_example
1512     filtering_audio_example
1513     filtering_video_example
1514     http_multiclient_example
1515     hw_decode_example
1516     metadata_example
1517     muxing_example
1518     qsvdec_example
1519     remuxing_example
1520     resampling_audio_example
1521     scaling_video_example
1522     transcode_aac_example
1523     transcoding_example
1524 "
1525
1526 EXTERNAL_AUTODETECT_LIBRARY_LIST="
1527     alsa
1528     appkit
1529     avfoundation
1530     bzlib
1531     coreimage
1532     iconv
1533     libxcb
1534     libxcb_shm
1535     libxcb_shape
1536     libxcb_xfixes
1537     lzma
1538     schannel
1539     sdl2
1540     securetransport
1541     sndio
1542     xlib
1543     zlib
1544 "
1545
1546 EXTERNAL_LIBRARY_GPL_LIST="
1547     avisynth
1548     frei0r
1549     libcdio
1550     librubberband
1551     libvidstab
1552     libx264
1553     libx265
1554     libxavs
1555     libxvid
1556 "
1557
1558 EXTERNAL_LIBRARY_NONFREE_LIST="
1559     decklink
1560     libndi_newtek
1561     libfdk_aac
1562     openssl
1563 "
1564
1565 EXTERNAL_LIBRARY_VERSION3_LIST="
1566     gmp
1567     libopencore_amrnb
1568     libopencore_amrwb
1569     libvmaf
1570     libvo_amrwbenc
1571     rkmpp
1572 "
1573
1574 EXTERNAL_LIBRARY_GPLV3_LIST="
1575     libsmbclient
1576 "
1577
1578 EXTERNAL_LIBRARY_LIST="
1579     $EXTERNAL_LIBRARY_GPL_LIST
1580     $EXTERNAL_LIBRARY_NONFREE_LIST
1581     $EXTERNAL_LIBRARY_VERSION3_LIST
1582     $EXTERNAL_LIBRARY_GPLV3_LIST
1583     chromaprint
1584     gcrypt
1585     gnutls
1586     jni
1587     ladspa
1588     libass
1589     libbluray
1590     libbs2b
1591     libcaca
1592     libcelt
1593     libdc1394
1594     libdrm
1595     libflite
1596     libfontconfig
1597     libfreetype
1598     libfribidi
1599     libgme
1600     libgsm
1601     libiec61883
1602     libilbc
1603     libjack
1604     libkvazaar
1605     libmodplug
1606     libmp3lame
1607     libmysofa
1608     libopencv
1609     libopenh264
1610     libopenjpeg
1611     libopenmpt
1612     libopus
1613     libpulse
1614     librsvg
1615     librtmp
1616     libshine
1617     libsmbclient
1618     libsnappy
1619     libsoxr
1620     libspeex
1621     libssh
1622     libtesseract
1623     libtheora
1624     libtwolame
1625     libv4l2
1626     libvorbis
1627     libvpx
1628     libwavpack
1629     libwebp
1630     libxml2
1631     libzimg
1632     libzmq
1633     libzvbi
1634     mediacodec
1635     openal
1636     opencl
1637     opengl
1638 "
1639
1640 HWACCEL_AUTODETECT_LIBRARY_LIST="
1641     audiotoolbox
1642     crystalhd
1643     cuda
1644     cuvid
1645     d3d11va
1646     dxva2
1647     nvdec
1648     nvenc
1649     vaapi
1650     vdpau
1651     videotoolbox
1652     v4l2_m2m
1653     xvmc
1654 "
1655
1656 # catchall list of things that require external libs to link
1657 EXTRALIBS_LIST="
1658     cpu_init
1659     cws2fws
1660 "
1661
1662 HWACCEL_LIBRARY_NONFREE_LIST="
1663     cuda_sdk
1664     libnpp
1665 "
1666
1667 HWACCEL_LIBRARY_LIST="
1668     $HWACCEL_LIBRARY_NONFREE_LIST
1669     libmfx
1670     mmal
1671     omx
1672 "
1673
1674 DOCUMENT_LIST="
1675     doc
1676     htmlpages
1677     manpages
1678     podpages
1679     txtpages
1680 "
1681
1682 FEATURE_LIST="
1683     ftrapv
1684     gray
1685     hardcoded_tables
1686     omx_rpi
1687     runtime_cpudetect
1688     safe_bitstream_reader
1689     shared
1690     small
1691     static
1692     swscale_alpha
1693 "
1694
1695 LIBRARY_LIST="
1696     avcodec
1697     avdevice
1698     avfilter
1699     avformat
1700     avresample
1701     avutil
1702     postproc
1703     swresample
1704     swscale
1705 "
1706
1707 LICENSE_LIST="
1708     gpl
1709     nonfree
1710     version3
1711 "
1712
1713 PROGRAM_LIST="
1714     ffplay
1715     ffprobe
1716     ffserver
1717     ffmpeg
1718 "
1719
1720 SUBSYSTEM_LIST="
1721     dct
1722     dwt
1723     error_resilience
1724     faan
1725     fast_unaligned
1726     fft
1727     lsp
1728     lzo
1729     mdct
1730     pixelutils
1731     network
1732     rdft
1733 "
1734
1735 # COMPONENT_LIST needs to come last to ensure correct dependency checking
1736 CONFIG_LIST="
1737     $DOCUMENT_LIST
1738     $EXAMPLE_LIST
1739     $EXTERNAL_LIBRARY_LIST
1740     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1741     $HWACCEL_LIBRARY_LIST
1742     $HWACCEL_AUTODETECT_LIBRARY_LIST
1743     $FEATURE_LIST
1744     $LICENSE_LIST
1745     $LIBRARY_LIST
1746     $PROGRAM_LIST
1747     $SUBSYSTEM_LIST
1748     autodetect
1749     fontconfig
1750     linux_perf
1751     memory_poisoning
1752     neon_clobber_test
1753     ossfuzz
1754     pic
1755     thumb
1756     valgrind_backtrace
1757     xmm_clobber_test
1758     $COMPONENT_LIST
1759 "
1760
1761 THREADS_LIST="
1762     pthreads
1763     os2threads
1764     w32threads
1765 "
1766
1767 ATOMICS_LIST="
1768     atomics_gcc
1769     atomics_suncc
1770     atomics_win32
1771 "
1772
1773 AUTODETECT_LIBS="
1774     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1775     $HWACCEL_AUTODETECT_LIBRARY_LIST
1776     $THREADS_LIST
1777 "
1778
1779 ARCH_LIST="
1780     aarch64
1781     alpha
1782     arm
1783     avr32
1784     avr32_ap
1785     avr32_uc
1786     bfin
1787     ia64
1788     m68k
1789     mips
1790     mips64
1791     parisc
1792     ppc
1793     ppc64
1794     s390
1795     sh4
1796     sparc
1797     sparc64
1798     tilegx
1799     tilepro
1800     tomi
1801     x86
1802     x86_32
1803     x86_64
1804 "
1805
1806 ARCH_EXT_LIST_ARM="
1807     armv5te
1808     armv6
1809     armv6t2
1810     armv8
1811     neon
1812     vfp
1813     vfpv3
1814     setend
1815 "
1816
1817 ARCH_EXT_LIST_MIPS="
1818     mipsfpu
1819     mips32r2
1820     mips32r5
1821     mips64r2
1822     mips32r6
1823     mips64r6
1824     mipsdsp
1825     mipsdspr2
1826     msa
1827 "
1828
1829 ARCH_EXT_LIST_LOONGSON="
1830     loongson2
1831     loongson3
1832     mmi
1833 "
1834
1835 ARCH_EXT_LIST_X86_SIMD="
1836     aesni
1837     amd3dnow
1838     amd3dnowext
1839     avx
1840     avx2
1841     fma3
1842     fma4
1843     mmx
1844     mmxext
1845     sse
1846     sse2
1847     sse3
1848     sse4
1849     sse42
1850     ssse3
1851     xop
1852 "
1853
1854 ARCH_EXT_LIST_PPC="
1855     altivec
1856     dcbzl
1857     ldbrx
1858     power8
1859     ppc4xx
1860     vsx
1861 "
1862
1863 ARCH_EXT_LIST_X86="
1864     $ARCH_EXT_LIST_X86_SIMD
1865     cpunop
1866     i686
1867 "
1868
1869 ARCH_EXT_LIST="
1870     $ARCH_EXT_LIST_ARM
1871     $ARCH_EXT_LIST_PPC
1872     $ARCH_EXT_LIST_X86
1873     $ARCH_EXT_LIST_MIPS
1874     $ARCH_EXT_LIST_LOONGSON
1875 "
1876
1877 ARCH_FEATURES="
1878     aligned_stack
1879     fast_64bit
1880     fast_clz
1881     fast_cmov
1882     local_aligned
1883     simd_align_16
1884     simd_align_32
1885 "
1886
1887 BUILTIN_LIST="
1888     atomic_cas_ptr
1889     machine_rw_barrier
1890     MemoryBarrier
1891     mm_empty
1892     rdtsc
1893     sarestart
1894     sem_timedwait
1895     sync_val_compare_and_swap
1896 "
1897 HAVE_LIST_CMDLINE="
1898     inline_asm
1899     symver
1900     x86asm
1901 "
1902
1903 HAVE_LIST_PUB="
1904     bigendian
1905     fast_unaligned
1906 "
1907
1908 HEADERS_LIST="
1909     arpa_inet_h
1910     asm_types_h
1911     cdio_paranoia_h
1912     cdio_paranoia_paranoia_h
1913     cuda_h
1914     dispatch_dispatch_h
1915     dev_bktr_ioctl_bt848_h
1916     dev_bktr_ioctl_meteor_h
1917     dev_ic_bt8xx_h
1918     dev_video_bktr_ioctl_bt848_h
1919     dev_video_meteor_ioctl_meteor_h
1920     direct_h
1921     dirent_h
1922     dxgidebug_h
1923     dxva_h
1924     ES2_gl_h
1925     gsm_h
1926     io_h
1927     machine_ioctl_bt848_h
1928     machine_ioctl_meteor_h
1929     malloc_h
1930     opencv2_core_core_c_h
1931     OpenGL_gl3_h
1932     poll_h
1933     sys_param_h
1934     sys_resource_h
1935     sys_select_h
1936     sys_soundcard_h
1937     sys_time_h
1938     sys_un_h
1939     sys_videoio_h
1940     termios_h
1941     udplite_h
1942     unistd_h
1943     valgrind_valgrind_h
1944     windows_h
1945     winsock2_h
1946 "
1947
1948 INTRINSICS_LIST="
1949     intrinsics_neon
1950 "
1951
1952 COMPLEX_FUNCS="
1953     cabs
1954     cexp
1955 "
1956
1957 MATH_FUNCS="
1958     atanf
1959     atan2f
1960     cbrt
1961     cbrtf
1962     copysign
1963     cosf
1964     erf
1965     exp2
1966     exp2f
1967     expf
1968     hypot
1969     isfinite
1970     isinf
1971     isnan
1972     ldexpf
1973     llrint
1974     llrintf
1975     log2
1976     log2f
1977     log10f
1978     lrint
1979     lrintf
1980     powf
1981     rint
1982     round
1983     roundf
1984     sinf
1985     trunc
1986     truncf
1987 "
1988
1989 SYSTEM_FEATURES="
1990     atomics_native
1991     dos_paths
1992     libc_msvcrt
1993     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
1994     section_data_rel_ro
1995     threads
1996     uwp
1997     winrt
1998 "
1999
2000 SYSTEM_FUNCS="
2001     access
2002     aligned_malloc
2003     arc4random
2004     clock_gettime
2005     closesocket
2006     CommandLineToArgvW
2007     fcntl
2008     getaddrinfo
2009     gethrtime
2010     getopt
2011     GetProcessAffinityMask
2012     GetProcessMemoryInfo
2013     GetProcessTimes
2014     getrusage
2015     GetSystemTimeAsFileTime
2016     gettimeofday
2017     glob
2018     glXGetProcAddress
2019     gmtime_r
2020     inet_aton
2021     isatty
2022     kbhit
2023     localtime_r
2024     lstat
2025     lzo1x_999_compress
2026     mach_absolute_time
2027     MapViewOfFile
2028     memalign
2029     mkstemp
2030     mmap
2031     mprotect
2032     nanosleep
2033     PeekNamedPipe
2034     posix_memalign
2035     pthread_cancel
2036     sched_getaffinity
2037     SetConsoleTextAttribute
2038     SetConsoleCtrlHandler
2039     setmode
2040     setrlimit
2041     Sleep
2042     strerror_r
2043     sysconf
2044     sysctl
2045     usleep
2046     UTGetOSTypeFromString
2047     VirtualAlloc
2048     wglGetProcAddress
2049 "
2050
2051 SYSTEM_LIBRARIES="
2052     vaapi_drm
2053     vaapi_x11
2054     vdpau_x11
2055     wincrypt
2056 "
2057
2058 TOOLCHAIN_FEATURES="
2059     as_arch_directive
2060     as_fpu_directive
2061     as_func
2062     as_object_arch
2063     asm_mod_q
2064     blocks_extension
2065     ebp_available
2066     ebx_available
2067     gnu_as
2068     gnu_windres
2069     ibm_asm
2070     inline_asm_direct_symbol_refs
2071     inline_asm_labels
2072     inline_asm_nonlocal_labels
2073     pragma_deprecated
2074     rsync_contimeout
2075     symver_asm_label
2076     symver_gnu_asm
2077     vfp_args
2078     xform_asm
2079     xmm_clobbers
2080 "
2081
2082 TYPES_LIST="
2083     CONDITION_VARIABLE_Ptr
2084     kCMVideoCodecType_HEVC
2085     socklen_t
2086     struct_addrinfo
2087     struct_group_source_req
2088     struct_ip_mreq_source
2089     struct_ipv6_mreq
2090     struct_msghdr_msg_flags
2091     struct_pollfd
2092     struct_rusage_ru_maxrss
2093     struct_sctp_event_subscribe
2094     struct_sockaddr_in6
2095     struct_sockaddr_sa_len
2096     struct_sockaddr_storage
2097     struct_stat_st_mtim_tv_nsec
2098     struct_v4l2_frmivalenum_discrete
2099 "
2100
2101 HAVE_LIST="
2102     $ARCH_EXT_LIST
2103     $(add_suffix _external $ARCH_EXT_LIST)
2104     $(add_suffix _inline   $ARCH_EXT_LIST)
2105     $ARCH_FEATURES
2106     $ATOMICS_LIST
2107     $BUILTIN_LIST
2108     $COMPLEX_FUNCS
2109     $HAVE_LIST_CMDLINE
2110     $HAVE_LIST_PUB
2111     $HEADERS_LIST
2112     $INTRINSICS_LIST
2113     $MATH_FUNCS
2114     $SYSTEM_FEATURES
2115     $SYSTEM_FUNCS
2116     $SYSTEM_LIBRARIES
2117     $THREADS_LIST
2118     $TOOLCHAIN_FEATURES
2119     $TYPES_LIST
2120     makeinfo
2121     makeinfo_html
2122     perl
2123     pod2man
2124     texi2html
2125 "
2126
2127 # options emitted with CONFIG_ prefix but not available on the command line
2128 CONFIG_EXTRA="
2129     aandcttables
2130     ac3dsp
2131     adts_header
2132     audio_frame_queue
2133     audiodsp
2134     blockdsp
2135     bswapdsp
2136     cabac
2137     cbs
2138     cbs_h264
2139     cbs_h265
2140     cbs_mpeg2
2141     dirac_parse
2142     dvprofile
2143     exif
2144     faandct
2145     faanidct
2146     fdctdsp
2147     flacdsp
2148     fmtconvert
2149     frame_thread_encoder
2150     g722dsp
2151     golomb
2152     gplv3
2153     h263dsp
2154     h264chroma
2155     h264dsp
2156     h264parse
2157     h264pred
2158     h264qpel
2159     hevcparse
2160     hpeldsp
2161     huffman
2162     huffyuvdsp
2163     huffyuvencdsp
2164     idctdsp
2165     iirfilter
2166     mdct15
2167     intrax8
2168     iso_media
2169     ividsp
2170     jpegtables
2171     lgplv3
2172     libx262
2173     llauddsp
2174     llviddsp
2175     llvidencdsp
2176     lpc
2177     lzf
2178     me_cmp
2179     mpeg_er
2180     mpegaudio
2181     mpegaudiodsp
2182     mpegaudioheader
2183     mpegvideo
2184     mpegvideoenc
2185     mss34dsp
2186     pixblockdsp
2187     qpeldsp
2188     qsv
2189     qsvdec
2190     qsvenc
2191     qsvvpp
2192     rangecoder
2193     riffdec
2194     riffenc
2195     rtpdec
2196     rtpenc_chain
2197     rv34dsp
2198     sinewin
2199     snappy
2200     srtp
2201     startcode
2202     texturedsp
2203     texturedspenc
2204     tpeldsp
2205     vaapi_1
2206     vaapi_encode
2207     vc1dsp
2208     videodsp
2209     vp3dsp
2210     vp56dsp
2211     vp8dsp
2212     wma_freqs
2213     wmv2dsp
2214 "
2215
2216 CMDLINE_SELECT="
2217     $ARCH_EXT_LIST
2218     $CONFIG_LIST
2219     $HAVE_LIST_CMDLINE
2220     $THREADS_LIST
2221     asm
2222     cross_compile
2223     debug
2224     extra_warnings
2225     logging
2226     lto
2227     optimizations
2228     rpath
2229     stripping
2230 "
2231
2232 PATHS_LIST="
2233     bindir
2234     datadir
2235     docdir
2236     incdir
2237     libdir
2238     mandir
2239     pkgconfigdir
2240     prefix
2241     shlibdir
2242     install_name_dir
2243 "
2244
2245 CMDLINE_SET="
2246     $PATHS_LIST
2247     ar
2248     arch
2249     as
2250     assert_level
2251     build_suffix
2252     cc
2253     objcc
2254     cpu
2255     cross_prefix
2256     custom_allocator
2257     cxx
2258     dep_cc
2259     doxygen
2260     env
2261     extra_version
2262     gas
2263     host_cc
2264     host_cflags
2265     host_extralibs
2266     host_ld
2267     host_ldflags
2268     host_os
2269     ignore_tests
2270     install
2271     ld
2272     ln_s
2273     logfile
2274     malloc_prefix
2275     nm
2276     optflags
2277     nvccflags
2278     pkg_config
2279     pkg_config_flags
2280     progs_suffix
2281     random_seed
2282     ranlib
2283     samples
2284     strip
2285     sws_max_filter_size
2286     sysinclude
2287     sysroot
2288     target_exec
2289     target_os
2290     target_path
2291     target_samples
2292     tempprefix
2293     toolchain
2294     valgrind
2295     x86asmexe
2296 "
2297
2298 CMDLINE_APPEND="
2299     extra_cflags
2300     extra_cxxflags
2301     extra_objcflags
2302     host_cppflags
2303 "
2304
2305 # code dependency declarations
2306
2307 # architecture extensions
2308
2309 armv5te_deps="arm"
2310 armv6_deps="arm"
2311 armv6t2_deps="arm"
2312 armv8_deps="aarch64"
2313 neon_deps_any="aarch64 arm"
2314 intrinsics_neon_deps="neon"
2315 vfp_deps_any="aarch64 arm"
2316 vfpv3_deps="vfp"
2317 setend_deps="arm"
2318
2319 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2320
2321 altivec_deps="ppc"
2322 dcbzl_deps="ppc"
2323 ldbrx_deps="ppc"
2324 ppc4xx_deps="ppc"
2325 vsx_deps="altivec"
2326 power8_deps="vsx"
2327
2328 loongson2_deps="mips"
2329 loongson3_deps="mips"
2330 mips32r2_deps="mips"
2331 mips32r5_deps="mips"
2332 mips32r6_deps="mips"
2333 mips64r2_deps="mips"
2334 mips64r6_deps="mips"
2335 mipsfpu_deps="mips"
2336 mipsdsp_deps="mips"
2337 mipsdspr2_deps="mips"
2338 mmi_deps="mips"
2339 msa_deps="mipsfpu"
2340
2341 cpunop_deps="i686"
2342 x86_64_select="i686"
2343 x86_64_suggest="fast_cmov"
2344
2345 amd3dnow_deps="mmx"
2346 amd3dnowext_deps="amd3dnow"
2347 i686_deps="x86"
2348 mmx_deps="x86"
2349 mmxext_deps="mmx"
2350 sse_deps="mmxext"
2351 sse2_deps="sse"
2352 sse3_deps="sse2"
2353 ssse3_deps="sse3"
2354 sse4_deps="ssse3"
2355 sse42_deps="sse4"
2356 aesni_deps="sse42"
2357 avx_deps="sse42"
2358 xop_deps="avx"
2359 fma3_deps="avx"
2360 fma4_deps="avx"
2361 avx2_deps="avx"
2362
2363 mmx_external_deps="x86asm"
2364 mmx_inline_deps="inline_asm x86"
2365 mmx_suggest="mmx_external mmx_inline"
2366
2367 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2368     eval dep=\$${ext}_deps
2369     eval ${ext}_external_deps='"${dep}_external"'
2370     eval ${ext}_inline_deps='"${dep}_inline"'
2371     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2372 done
2373
2374 aligned_stack_if_any="aarch64 ppc x86"
2375 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2376 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2377 fast_unaligned_if_any="aarch64 ppc x86"
2378 simd_align_16_if_any="altivec neon sse"
2379 simd_align_32_if_any="avx"
2380
2381 # system capabilities
2382 symver_if_any="symver_asm_label symver_gnu_asm"
2383 valgrind_backtrace_conflict="optimizations"
2384 valgrind_backtrace_deps="valgrind_valgrind_h"
2385
2386 # threading support
2387 atomics_gcc_if="sync_val_compare_and_swap"
2388 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2389 atomics_win32_if="MemoryBarrier"
2390 atomics_native_if_any="$ATOMICS_LIST"
2391 w32threads_deps="atomics_native"
2392 threads_if_any="$THREADS_LIST"
2393
2394 # subsystems
2395 cbs_h264_select="cbs golomb"
2396 cbs_h265_select="cbs golomb"
2397 cbs_mpeg2_select="cbs"
2398 dct_select="rdft"
2399 dirac_parse_select="golomb"
2400 error_resilience_select="me_cmp"
2401 faandct_deps="faan"
2402 faandct_select="fdctdsp"
2403 faanidct_deps="faan"
2404 faanidct_select="idctdsp"
2405 h264dsp_select="startcode"
2406 hevcparse_select="golomb"
2407 frame_thread_encoder_deps="encoders threads"
2408 intrax8_select="blockdsp idctdsp"
2409 mdct_select="fft"
2410 mdct15_select="fft"
2411 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2412 mpeg_er_select="error_resilience"
2413 mpegaudio_select="mpegaudiodsp mpegaudioheader"
2414 mpegaudiodsp_select="dct"
2415 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2416 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
2417 vc1dsp_select="h264chroma qpeldsp startcode"
2418 rdft_select="fft"
2419
2420 # decoders / encoders
2421 aac_decoder_select="adts_header mdct15 mdct sinewin"
2422 aac_fixed_decoder_select="mdct sinewin"
2423 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2424 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2425 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2426 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2427 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2428 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2429 adpcm_g722_decoder_select="g722dsp"
2430 adpcm_g722_encoder_select="g722dsp"
2431 aic_decoder_select="golomb idctdsp"
2432 alac_encoder_select="lpc"
2433 als_decoder_select="bswapdsp"
2434 amrnb_decoder_select="lsp"
2435 amrwb_decoder_select="lsp"
2436 amv_decoder_select="sp5x_decoder exif"
2437 amv_encoder_select="aandcttables jpegtables mpegvideoenc"
2438 ape_decoder_select="bswapdsp llauddsp"
2439 apng_decoder_select="zlib"
2440 apng_encoder_select="llvidencdsp zlib"
2441 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2442 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2443 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2444 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2445 atrac1_decoder_select="mdct sinewin"
2446 atrac3_decoder_select="mdct"
2447 atrac3p_decoder_select="mdct sinewin"
2448 avrn_decoder_select="exif jpegtables"
2449 bink_decoder_select="blockdsp hpeldsp"
2450 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2451 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2452 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2453 clearvideo_decoder_select="idctdsp"
2454 cllc_decoder_select="bswapdsp"
2455 comfortnoise_encoder_select="lpc"
2456 cook_decoder_select="audiodsp mdct sinewin"
2457 cscd_decoder_select="lzo"
2458 cscd_decoder_suggest="zlib"
2459 dca_decoder_select="mdct"
2460 dds_decoder_select="texturedsp"
2461 dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
2462 dnxhd_decoder_select="blockdsp idctdsp"
2463 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2464 dolby_e_decoder_select="mdct"
2465 dvvideo_decoder_select="dvprofile idctdsp"
2466 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2467 dxa_decoder_select="zlib"
2468 dxv_decoder_select="lzf texturedsp"
2469 eac3_decoder_select="ac3_decoder"
2470 eac3_encoder_select="ac3_encoder"
2471 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2472 eatgq_decoder_select="aandcttables"
2473 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2474 exr_decoder_select="zlib"
2475 ffv1_decoder_select="rangecoder"
2476 ffv1_encoder_select="rangecoder"
2477 ffvhuff_decoder_select="huffyuv_decoder"
2478 ffvhuff_encoder_select="huffyuv_encoder"
2479 fic_decoder_select="golomb"
2480 flac_decoder_select="flacdsp"
2481 flac_encoder_select="bswapdsp flacdsp lpc"
2482 flashsv2_decoder_select="zlib"
2483 flashsv2_encoder_select="zlib"
2484 flashsv_decoder_select="zlib"
2485 flashsv_encoder_select="zlib"
2486 flv_decoder_select="h263_decoder"
2487 flv_encoder_select="h263_encoder"
2488 fourxm_decoder_select="blockdsp bswapdsp"
2489 fraps_decoder_select="bswapdsp huffman"
2490 g2m_decoder_select="blockdsp idctdsp jpegtables zlib"
2491 g729_decoder_select="audiodsp"
2492 h261_decoder_select="mpegvideo"
2493 h261_encoder_select="aandcttables mpegvideoenc"
2494 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2495 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2496 h263i_decoder_select="h263_decoder"
2497 h263p_decoder_select="h263_decoder"
2498 h263p_encoder_select="h263_encoder"
2499 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
2500 h264_decoder_suggest="error_resilience"
2501 hap_decoder_select="snappy texturedsp"
2502 hap_encoder_deps="libsnappy"
2503 hap_encoder_select="texturedspenc"
2504 hevc_decoder_select="bswapdsp cabac golomb hevcparse videodsp"
2505 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2506 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llvidencdsp"
2507 iac_decoder_select="imc_decoder"
2508 imc_decoder_select="bswapdsp fft mdct sinewin"
2509 indeo3_decoder_select="hpeldsp"
2510 indeo4_decoder_select="ividsp"
2511 indeo5_decoder_select="ividsp"
2512 interplay_video_decoder_select="hpeldsp"
2513 jpegls_decoder_select="mjpeg_decoder"
2514 jv_decoder_select="blockdsp"
2515 lagarith_decoder_select="llviddsp"
2516 ljpeg_encoder_select="aandcttables idctdsp jpegtables mpegvideoenc"
2517 magicyuv_decoder_select="llviddsp"
2518 magicyuv_encoder_select="llvidencdsp"
2519 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2520 metasound_decoder_select="lsp mdct sinewin"
2521 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2522 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2523 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2524 mjpegb_decoder_select="mjpeg_decoder"
2525 mlp_decoder_select="mlp_parser"
2526 mlp_encoder_select="lpc"
2527 motionpixels_decoder_select="bswapdsp"
2528 mp1_decoder_select="mpegaudio"
2529 mp1float_decoder_select="mpegaudio"
2530 mp2_decoder_select="mpegaudio"
2531 mp2float_decoder_select="mpegaudio"
2532 mp3_decoder_select="mpegaudio"
2533 mp3adu_decoder_select="mpegaudio"
2534 mp3adufloat_decoder_select="mpegaudio"
2535 mp3float_decoder_select="mpegaudio"
2536 mp3on4_decoder_select="mpegaudio"
2537 mp3on4float_decoder_select="mpegaudio"
2538 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2539 mpc8_decoder_select="mpegaudiodsp"
2540 mpegvideo_decoder_select="mpegvideo"
2541 mpeg1video_decoder_select="mpegvideo"
2542 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2543 mpeg2video_decoder_select="mpegvideo"
2544 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2545 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2546 mpeg4_encoder_select="h263_encoder"
2547 msa1_decoder_select="mss34dsp"
2548 mscc_decoder_select="zlib"
2549 msmpeg4v1_decoder_select="h263_decoder"
2550 msmpeg4v2_decoder_select="h263_decoder"
2551 msmpeg4v2_encoder_select="h263_encoder"
2552 msmpeg4v3_decoder_select="h263_decoder"
2553 msmpeg4v3_encoder_select="h263_encoder"
2554 mss2_decoder_select="mpegvideo qpeldsp vc1_decoder"
2555 mts2_decoder_select="mss34dsp"
2556 mxpeg_decoder_select="mjpeg_decoder"
2557 nellymoser_decoder_select="mdct sinewin"
2558 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2559 nuv_decoder_select="idctdsp lzo"
2560 on2avc_decoder_select="mdct"
2561 opus_decoder_deps="swresample"
2562 opus_decoder_select="mdct15"
2563 opus_encoder_select="audio_frame_queue mdct15"
2564 png_decoder_select="zlib"
2565 png_encoder_select="llvidencdsp zlib"
2566 prores_decoder_select="blockdsp idctdsp"
2567 prores_encoder_select="fdctdsp"
2568 qcelp_decoder_select="lsp"
2569 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2570 ra_144_decoder_select="audiodsp"
2571 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2572 ralf_decoder_select="golomb"
2573 rawvideo_decoder_select="bswapdsp"
2574 rscc_decoder_select="zlib"
2575 rtjpeg_decoder_select="me_cmp"
2576 rv10_decoder_select="h263_decoder"
2577 rv10_encoder_select="h263_encoder"
2578 rv20_decoder_select="h263_decoder"
2579 rv20_encoder_select="h263_encoder"
2580 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2581 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2582 screenpresso_decoder_select="zlib"
2583 shorten_decoder_select="bswapdsp"
2584 sipr_decoder_select="lsp"
2585 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2586 snow_encoder_select="aandcttables dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2587 sonic_decoder_select="golomb rangecoder"
2588 sonic_encoder_select="golomb rangecoder"
2589 sonic_ls_encoder_select="golomb rangecoder"
2590 sp5x_decoder_select="mjpeg_decoder"
2591 srgc_decoder_select="zlib"
2592 svq1_decoder_select="hpeldsp"
2593 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2594 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2595 svq3_decoder_suggest="zlib"
2596 tak_decoder_select="audiodsp"
2597 tdsc_decoder_select="zlib mjpeg_decoder"
2598 theora_decoder_select="vp3_decoder"
2599 thp_decoder_select="mjpeg_decoder"
2600 tiff_decoder_suggest="zlib lzma"
2601 tiff_encoder_suggest="zlib"
2602 truehd_decoder_select="mlp_parser"
2603 truehd_encoder_select="lpc"
2604 truemotion2_decoder_select="bswapdsp"
2605 truespeech_decoder_select="bswapdsp"
2606 tscc_decoder_select="zlib"
2607 twinvq_decoder_select="mdct lsp sinewin"
2608 txd_decoder_select="texturedsp"
2609 utvideo_decoder_select="bswapdsp llviddsp"
2610 utvideo_encoder_select="bswapdsp huffman llvidencdsp"
2611 vble_decoder_select="llviddsp"
2612 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 mpegvideo vc1dsp"
2613 vc1image_decoder_select="vc1_decoder"
2614 vorbis_decoder_select="mdct"
2615 vorbis_encoder_select="mdct"
2616 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2617 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2618 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2619 vp6a_decoder_select="vp6_decoder"
2620 vp6f_decoder_select="vp6_decoder"
2621 vp7_decoder_select="h264pred videodsp vp8dsp"
2622 vp8_decoder_select="h264pred videodsp vp8dsp"
2623 vp9_decoder_select="videodsp vp9_parser"
2624 webp_decoder_select="vp8_decoder exif"
2625 wmalossless_decoder_select="llauddsp"
2626 wmapro_decoder_select="mdct sinewin wma_freqs"
2627 wmav1_decoder_select="mdct sinewin wma_freqs"
2628 wmav1_encoder_select="mdct sinewin wma_freqs"
2629 wmav2_decoder_select="mdct sinewin wma_freqs"
2630 wmav2_encoder_select="mdct sinewin wma_freqs"
2631 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2632 wmv1_decoder_select="h263_decoder"
2633 wmv1_encoder_select="h263_encoder"
2634 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2635 wmv2_encoder_select="h263_encoder wmv2dsp"
2636 wmv3_decoder_select="vc1_decoder"
2637 wmv3image_decoder_select="wmv3_decoder"
2638 xma1_decoder_select="wmapro_decoder"
2639 xma2_decoder_select="wmapro_decoder"
2640 zerocodec_decoder_select="zlib"
2641 zlib_decoder_select="zlib"
2642 zlib_encoder_select="zlib"
2643 zmbv_decoder_select="zlib"
2644 zmbv_encoder_select="zlib"
2645
2646 # hardware accelerators
2647 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2648 cuda_deps_any="libdl LoadLibrary"
2649 cuvid_deps="cuda"
2650 d3d11va_deps="dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2651 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode ole32 user32"
2652 videotoolbox_hwaccel_deps="videotoolbox pthreads"
2653 videotoolbox_hwaccel_extralibs="-framework QuartzCore"
2654 xvmc_deps="X11_extensions_XvMClib_h"
2655
2656 h263_vaapi_hwaccel_deps="vaapi"
2657 h263_vaapi_hwaccel_select="h263_decoder"
2658 h263_videotoolbox_hwaccel_deps="videotoolbox"
2659 h263_videotoolbox_hwaccel_select="h263_decoder"
2660 h264_cuvid_hwaccel_deps="cuda cuvid"
2661 h264_cuvid_hwaccel_select="h264_cuvid_decoder"
2662 h264_d3d11va_hwaccel_deps="d3d11va"
2663 h264_d3d11va_hwaccel_select="h264_decoder"
2664 h264_d3d11va2_hwaccel_deps="d3d11va"
2665 h264_d3d11va2_hwaccel_select="h264_decoder"
2666 h264_dxva2_hwaccel_deps="dxva2"
2667 h264_dxva2_hwaccel_select="h264_decoder"
2668 h264_mediacodec_hwaccel_deps="mediacodec"
2669 h264_mmal_hwaccel_deps="mmal"
2670 h264_nvdec_hwaccel_deps="cuda nvdec"
2671 h264_nvdec_hwaccel_select="h264_decoder"
2672 h264_qsv_hwaccel_deps="libmfx"
2673 h264_vaapi_hwaccel_deps="vaapi"
2674 h264_vaapi_hwaccel_select="h264_decoder"
2675 h264_vdpau_hwaccel_deps="vdpau"
2676 h264_vdpau_hwaccel_select="h264_decoder"
2677 h264_videotoolbox_hwaccel_deps="videotoolbox"
2678 h264_videotoolbox_hwaccel_select="h264_decoder"
2679 hevc_cuvid_hwaccel_deps="cuda cuvid"
2680 hevc_cuvid_hwaccel_select="hevc_cuvid_decoder"
2681 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2682 hevc_d3d11va_hwaccel_select="hevc_decoder"
2683 hevc_mediacodec_hwaccel_deps="mediacodec"
2684 hevc_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2685 hevc_d3d11va2_hwaccel_select="hevc_decoder"
2686 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2687 hevc_dxva2_hwaccel_select="hevc_decoder"
2688 hevc_nvdec_hwaccel_deps="cuda nvdec"
2689 hevc_nvdec_hwaccel_select="hevc_decoder"
2690 hevc_qsv_hwaccel_deps="libmfx"
2691 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2692 hevc_vaapi_hwaccel_select="hevc_decoder"
2693 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2694 hevc_vdpau_hwaccel_select="hevc_decoder"
2695 hevc_videotoolbox_hwaccel_deps="videotoolbox"
2696 hevc_videotoolbox_hwaccel_select="hevc_decoder"
2697 mjpeg_cuvid_hwaccel_deps="cuda cuvid"
2698 mjpeg_cuvid_hwaccel_select="mjpeg_cuvid_decoder"
2699 mpeg_xvmc_hwaccel_deps="xvmc"
2700 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2701 mpeg1_cuvid_hwaccel_deps="cuda cuvid"
2702 mpeg1_cuvid_hwaccel_select="mpeg1_cuvid_decoder"
2703 mpeg1_vdpau_hwaccel_deps="vdpau"
2704 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2705 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2706 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2707 mpeg1_xvmc_hwaccel_deps="xvmc"
2708 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2709 mpeg2_cuvid_hwaccel_deps="cuda cuvid"
2710 mpeg2_cuvid_hwaccel_select="mpeg2_cuvid_decoder"
2711 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2712 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2713 mpeg2_d3d11va2_hwaccel_deps="d3d11va"
2714 mpeg2_d3d11va2_hwaccel_select="mpeg2video_decoder"
2715 mpeg2_dxva2_hwaccel_deps="dxva2"
2716 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2717 mpeg2_mediacodec_hwaccel_deps="mediacodec"
2718 mpeg2_mmal_hwaccel_deps="mmal"
2719 mpeg2_qsv_hwaccel_deps="libmfx"
2720 mpeg2_vaapi_hwaccel_deps="vaapi"
2721 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2722 mpeg2_vdpau_hwaccel_deps="vdpau"
2723 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2724 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2725 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2726 mpeg2_xvmc_hwaccel_deps="xvmc"
2727 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2728 mpeg4_cuvid_hwaccel_deps="cuda cuvid"
2729 mpeg4_cuvid_hwaccel_select="mpeg4_cuvid_decoder"
2730 mpeg4_mediacodec_hwaccel_deps="mediacodec"
2731 mpeg4_mmal_hwaccel_deps="mmal"
2732 mpeg4_vaapi_hwaccel_deps="vaapi"
2733 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2734 mpeg4_vdpau_hwaccel_deps="vdpau"
2735 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2736 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2737 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2738 vc1_cuvid_hwaccel_deps="cuda cuvid"
2739 vc1_cuvid_hwaccel_select="vc1_cuvid_decoder"
2740 vc1_d3d11va_hwaccel_deps="d3d11va"
2741 vc1_d3d11va_hwaccel_select="vc1_decoder"
2742 vc1_d3d11va2_hwaccel_deps="d3d11va"
2743 vc1_d3d11va2_hwaccel_select="vc1_decoder"
2744 vc1_dxva2_hwaccel_deps="dxva2"
2745 vc1_dxva2_hwaccel_select="vc1_decoder"
2746 vc1_mmal_hwaccel_deps="mmal"
2747 vc1_qsv_hwaccel_deps="libmfx"
2748 vc1_vaapi_hwaccel_deps="vaapi"
2749 vc1_vaapi_hwaccel_select="vc1_decoder"
2750 vc1_vdpau_hwaccel_deps="vdpau"
2751 vc1_vdpau_hwaccel_select="vc1_decoder"
2752 vp8_cuvid_hwaccel_deps="cuda cuvid"
2753 vp8_cuvid_hwaccel_select="vp8_cuvid_decoder"
2754 vp9_cuvid_hwaccel_deps="cuda cuvid"
2755 vp9_cuvid_hwaccel_select="vp9_cuvid_decoder"
2756 vp8_mediacodec_hwaccel_deps="mediacodec"
2757 vp8_qsv_hwaccel_deps="libmfx"
2758 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2759 vp9_d3d11va_hwaccel_select="vp9_decoder"
2760 vp9_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2761 vp9_d3d11va2_hwaccel_select="vp9_decoder"
2762 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
2763 vp9_dxva2_hwaccel_select="vp9_decoder"
2764 vp9_mediacodec_hwaccel_deps="mediacodec"
2765 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9_bit_depth"
2766 vp9_vaapi_hwaccel_select="vp9_decoder"
2767 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2768 wmv3_d3d11va2_hwaccel_select="vc1_d3d11va2_hwaccel"
2769 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2770 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2771 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2772
2773 # hardware-accelerated codecs
2774 omx_deps="libdl pthreads"
2775 omx_rpi_select="omx"
2776 qsv_deps="libmfx"
2777 qsvdec_select="qsv"
2778 qsvenc_select="qsv"
2779 qsvvpp_select="qsv"
2780 vaapi_encode_deps="vaapi"
2781 v4l2_m2m_deps_any="linux_videodev2_h"
2782
2783 hwupload_cuda_filter_deps="cuda"
2784 scale_npp_filter_deps="cuda libnpp"
2785 scale_cuda_filter_deps="cuda_sdk"
2786 thumbnail_cuda_filter_deps="cuda_sdk"
2787
2788 nvenc_deps="cuda"
2789 nvenc_deps_any="libdl LoadLibrary"
2790 nvenc_encoder_deps="nvenc"
2791
2792 h263_v4l2m2m_decoder_deps="v4l2_m2m h263_v4l2_m2m"
2793 h263_v4l2m2m_encoder_deps="v4l2_m2m h263_v4l2_m2m"
2794 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2795 h264_cuvid_decoder_deps="cuda cuvid"
2796 h264_cuvid_decoder_select="h264_mp4toannexb_bsf"
2797 h264_mediacodec_decoder_deps="mediacodec"
2798 h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
2799 h264_mmal_decoder_deps="mmal"
2800 h264_nvenc_encoder_deps="nvenc"
2801 h264_omx_encoder_deps="omx"
2802 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2803 h264_qsv_encoder_select="qsvenc"
2804 h264_rkmpp_decoder_deps="rkmpp"
2805 h264_rkmpp_decoder_select="h264_mp4toannexb_bsf"
2806 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2807 h264_vaapi_encoder_select="cbs_h264 vaapi_encode"
2808 h264_v4l2m2m_decoder_deps="v4l2_m2m h264_v4l2_m2m"
2809 h264_v4l2m2m_encoder_deps="v4l2_m2m h264_v4l2_m2m"
2810 hevc_cuvid_decoder_deps="cuda cuvid"
2811 hevc_cuvid_decoder_select="hevc_mp4toannexb_bsf"
2812 hevc_mediacodec_decoder_deps="mediacodec"
2813 hevc_mediacodec_decoder_select="hevc_mp4toannexb_bsf hevc_parser"
2814 hevc_nvenc_encoder_deps="nvenc"
2815 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec hevc_qsv_hwaccel"
2816 hevc_qsv_encoder_select="hevcparse qsvenc"
2817 hevc_rkmpp_decoder_deps="rkmpp"
2818 hevc_rkmpp_decoder_select="hevc_mp4toannexb_bsf"
2819 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2820 hevc_vaapi_encoder_select="cbs_h265 vaapi_encode"
2821 hevc_v4l2m2m_decoder_deps="v4l2_m2m hevc_v4l2_m2m"
2822 hevc_v4l2m2m_encoder_deps="v4l2_m2m hevc_v4l2_m2m"
2823 mjpeg_cuvid_decoder_deps="cuda cuvid"
2824 mjpeg_qsv_encoder_deps="libmfx"
2825 mjpeg_qsv_encoder_select="qsvenc"
2826 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2827 mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
2828 mpeg1_cuvid_decoder_deps="cuda cuvid"
2829 mpeg1_v4l2m2m_decoder_deps="v4l2_m2m mpeg1_v4l2_m2m"
2830 mpeg2_crystalhd_decoder_select="crystalhd"
2831 mpeg2_cuvid_decoder_deps="cuda cuvid"
2832 mpeg2_mmal_decoder_deps="mmal"
2833 mpeg2_mediacodec_decoder_deps="mediacodec"
2834 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel"
2835 mpeg2_qsv_encoder_select="qsvenc"
2836 mpeg2_vaapi_encoder_deps="VAEncPictureParameterBufferMPEG2"
2837 mpeg2_vaapi_encoder_select="cbs_mpeg2 vaapi_encode"
2838 mpeg2_v4l2m2m_decoder_deps="v4l2_m2m mpeg2_v4l2_m2m"
2839 mpeg4_crystalhd_decoder_select="crystalhd"
2840 mpeg4_cuvid_decoder_deps="cuda cuvid"
2841 mpeg4_mediacodec_decoder_deps="mediacodec"
2842 mpeg4_mmal_decoder_deps="mmal"
2843 mpeg4_omx_encoder_deps="omx"
2844 mpeg4_v4l2m2m_decoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
2845 mpeg4_v4l2m2m_encoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
2846 msmpeg4_crystalhd_decoder_select="crystalhd"
2847 nvenc_h264_encoder_select="h264_nvenc_encoder"
2848 nvenc_hevc_encoder_select="hevc_nvenc_encoder"
2849 vc1_crystalhd_decoder_select="crystalhd"
2850 vc1_cuvid_decoder_deps="cuda cuvid"
2851 vc1_mmal_decoder_deps="mmal"
2852 vc1_qsv_decoder_select="qsvdec vc1_qsv_hwaccel vc1_parser"
2853 vc1_v4l2m2m_decoder_deps="v4l2_m2m vc1_v4l2_m2m"
2854 vp8_cuvid_decoder_deps="cuda cuvid"
2855 vp8_mediacodec_decoder_deps="mediacodec"
2856 vp8_qsv_decoder_select="qsvdec vp8_qsv_hwaccel vp8_parser"
2857 vp8_rkmpp_decoder_deps="rkmpp"
2858 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
2859 vp8_vaapi_encoder_select="vaapi_encode"
2860 vp8_v4l2m2m_decoder_deps="v4l2_m2m vp8_v4l2_m2m"
2861 vp8_v4l2m2m_encoder_deps="v4l2_m2m vp8_v4l2_m2m"
2862 vp9_cuvid_decoder_deps="cuda cuvid"
2863 vp9_mediacodec_decoder_deps="mediacodec"
2864 vp9_rkmpp_decoder_deps="rkmpp"
2865 vp9_vaapi_encoder_deps="VAEncPictureParameterBufferVP9"
2866 vp9_vaapi_encoder_select="vaapi_encode"
2867 vp9_v4l2m2m_decoder_deps="v4l2_m2m vp9_v4l2_m2m"
2868 wmv3_crystalhd_decoder_select="crystalhd"
2869
2870 # parsers
2871 aac_parser_select="adts_header"
2872 h264_parser_select="golomb h264dsp h264parse"
2873 hevc_parser_select="hevcparse"
2874 mpegaudio_parser_select="mpegaudioheader"
2875 mpegvideo_parser_select="mpegvideo"
2876 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
2877 vc1_parser_select="vc1dsp"
2878
2879 # bitstream_filters
2880 aac_adtstoasc_bsf_select="adts_header"
2881 h264_metadata_bsf_select="cbs_h264"
2882 h264_redundant_pps_bsf_select="cbs_h264"
2883 hevc_metadata_bsf_select="cbs_h265"
2884 mjpeg2jpeg_bsf_select="jpegtables"
2885 mpeg2_metadata_bsf_select="cbs_mpeg2"
2886 trace_headers_bsf_select="cbs_h264 cbs_h265 cbs_mpeg2"
2887
2888 # external libraries
2889 aac_at_decoder_deps="audiotoolbox"
2890 ac3_at_decoder_deps="audiotoolbox"
2891 ac3_at_decoder_select="ac3_parser"
2892 adpcm_ima_qt_at_decoder_deps="audiotoolbox"
2893 alac_at_decoder_deps="audiotoolbox"
2894 amr_nb_at_decoder_deps="audiotoolbox"
2895 avisynth_deps_any="libdl LoadLibrary"
2896 avisynth_demuxer_deps="avisynth"
2897 avisynth_demuxer_select="riffdec"
2898 eac3_at_decoder_deps="audiotoolbox"
2899 eac3_at_decoder_select="ac3_parser"
2900 gsm_ms_at_decoder_deps="audiotoolbox"
2901 ilbc_at_decoder_deps="audiotoolbox"
2902 mp1_at_decoder_deps="audiotoolbox"
2903 mp2_at_decoder_deps="audiotoolbox"
2904 mp3_at_decoder_deps="audiotoolbox"
2905 mp1_at_decoder_select="mpegaudioheader"
2906 mp2_at_decoder_select="mpegaudioheader"
2907 mp3_at_decoder_select="mpegaudioheader"
2908 pcm_alaw_at_decoder_deps="audiotoolbox"
2909 pcm_mulaw_at_decoder_deps="audiotoolbox"
2910 qdmc_at_decoder_deps="audiotoolbox"
2911 qdm2_at_decoder_deps="audiotoolbox"
2912 aac_at_encoder_deps="audiotoolbox"
2913 aac_at_encoder_select="audio_frame_queue"
2914 alac_at_encoder_deps="audiotoolbox"
2915 alac_at_encoder_select="audio_frame_queue"
2916 ilbc_at_encoder_deps="audiotoolbox"
2917 ilbc_at_encoder_select="audio_frame_queue"
2918 pcm_alaw_at_encoder_deps="audiotoolbox"
2919 pcm_alaw_at_encoder_select="audio_frame_queue"
2920 pcm_mulaw_at_encoder_deps="audiotoolbox"
2921 pcm_mulaw_at_encoder_select="audio_frame_queue"
2922 chromaprint_muxer_deps="chromaprint"
2923 h264_videotoolbox_encoder_deps="pthreads"
2924 h264_videotoolbox_encoder_select="videotoolbox_encoder"
2925 libcelt_decoder_deps="libcelt"
2926 libfdk_aac_decoder_deps="libfdk_aac"
2927 libfdk_aac_encoder_deps="libfdk_aac"
2928 libfdk_aac_encoder_select="audio_frame_queue"
2929 libgme_demuxer_deps="libgme"
2930 libgsm_decoder_deps="libgsm"
2931 libgsm_encoder_deps="libgsm"
2932 libgsm_ms_decoder_deps="libgsm"
2933 libgsm_ms_encoder_deps="libgsm"
2934 libilbc_decoder_deps="libilbc"
2935 libilbc_encoder_deps="libilbc"
2936 libkvazaar_encoder_deps="libkvazaar"
2937 libmodplug_demuxer_deps="libmodplug"
2938 libmp3lame_encoder_deps="libmp3lame"
2939 libmp3lame_encoder_select="audio_frame_queue mpegaudioheader"
2940 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2941 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2942 libopencore_amrnb_encoder_select="audio_frame_queue"
2943 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2944 libopenh264_decoder_deps="libopenh264"
2945 libopenh264_decoder_select="h264_mp4toannexb_bsf"
2946 libopenh264_encoder_deps="libopenh264"
2947 libopenjpeg_decoder_deps="libopenjpeg"
2948 libopenjpeg_encoder_deps="libopenjpeg"
2949 libopenmpt_demuxer_deps="libopenmpt"
2950 libopus_decoder_deps="libopus"
2951 libopus_encoder_deps="libopus"
2952 libopus_encoder_select="audio_frame_queue"
2953 librsvg_decoder_deps="librsvg"
2954 libshine_encoder_deps="libshine"
2955 libshine_encoder_select="audio_frame_queue"
2956 libspeex_decoder_deps="libspeex"
2957 libspeex_encoder_deps="libspeex"
2958 libspeex_encoder_select="audio_frame_queue"
2959 libtheora_encoder_deps="libtheora"
2960 libtwolame_encoder_deps="libtwolame"
2961 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2962 libvorbis_decoder_deps="libvorbis"
2963 libvorbis_encoder_deps="libvorbis libvorbisenc"
2964 libvorbis_encoder_select="audio_frame_queue"
2965 libvpx_vp8_decoder_deps="libvpx"
2966 libvpx_vp8_encoder_deps="libvpx"
2967 libvpx_vp9_decoder_deps="libvpx"
2968 libvpx_vp9_encoder_deps="libvpx"
2969 libwavpack_encoder_deps="libwavpack"
2970 libwavpack_encoder_select="audio_frame_queue"
2971 libwebp_encoder_deps="libwebp"
2972 libwebp_anim_encoder_deps="libwebp"
2973 libx262_encoder_deps="libx262"
2974 libx264_encoder_deps="libx264"
2975 libx264rgb_encoder_deps="libx264 x264_csp_bgr"
2976 libx264rgb_encoder_select="libx264_encoder"
2977 libx265_encoder_deps="libx265"
2978 libxavs_encoder_deps="libxavs"
2979 libxvid_encoder_deps="libxvid"
2980 libzvbi_teletext_decoder_deps="libzvbi"
2981 videotoolbox_suggest="coreservices"
2982 videotoolbox_deps="corefoundation coremedia corevideo"
2983 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
2984
2985 # demuxers / muxers
2986 ac3_demuxer_select="ac3_parser"
2987 aiff_muxer_select="iso_media"
2988 asf_demuxer_select="riffdec"
2989 asf_o_demuxer_select="riffdec"
2990 asf_muxer_select="riffenc"
2991 asf_stream_muxer_select="asf_muxer"
2992 avi_demuxer_select="iso_media riffdec exif"
2993 avi_muxer_select="riffenc"
2994 caf_demuxer_select="iso_media riffdec"
2995 caf_muxer_select="iso_media"
2996 dash_muxer_select="mp4_muxer"
2997 dash_demuxer_deps="libxml2"
2998 dirac_demuxer_select="dirac_parser"
2999 dts_demuxer_select="dca_parser"
3000 dtshd_demuxer_select="dca_parser"
3001 dv_demuxer_select="dvprofile"
3002 dv_muxer_select="dvprofile"
3003 dxa_demuxer_select="riffdec"
3004 eac3_demuxer_select="ac3_parser"
3005 f4v_muxer_select="mov_muxer"
3006 fifo_muxer_deps="threads"
3007 flac_demuxer_select="flac_parser"
3008 hds_muxer_select="flv_muxer"
3009 hls_muxer_select="mpegts_muxer"
3010 hls_muxer_suggest="gcrypt openssl"
3011 image2_alias_pix_demuxer_select="image2_demuxer"
3012 image2_brender_pix_demuxer_select="image2_demuxer"
3013 ipod_muxer_select="mov_muxer"
3014 ismv_muxer_select="mov_muxer"
3015 matroska_audio_muxer_select="matroska_muxer"
3016 matroska_demuxer_select="iso_media riffdec"
3017 matroska_demuxer_suggest="bzlib lzo zlib"
3018 matroska_muxer_select="iso_media riffenc"
3019 mmf_muxer_select="riffenc"
3020 mov_demuxer_select="iso_media riffdec"
3021 mov_demuxer_suggest="zlib"
3022 mov_muxer_select="iso_media riffenc rtpenc_chain"
3023 mp3_demuxer_select="mpegaudio_parser"
3024 mp3_muxer_select="mpegaudioheader"
3025 mp4_muxer_select="mov_muxer"
3026 mpegts_demuxer_select="iso_media"
3027 mpegts_muxer_select="adts_muxer latm_muxer"
3028 mpegtsraw_demuxer_select="mpegts_demuxer"
3029 mxf_d10_muxer_select="mxf_muxer"
3030 mxf_opatom_muxer_select="mxf_muxer"
3031 nut_muxer_select="riffenc"
3032 nuv_demuxer_select="riffdec"
3033 oga_muxer_select="ogg_muxer"
3034 ogg_demuxer_select="dirac_parse"
3035 ogv_muxer_select="ogg_muxer"
3036 opus_muxer_select="ogg_muxer"
3037 psp_muxer_select="mov_muxer"
3038 rtp_demuxer_select="sdp_demuxer"
3039 rtp_muxer_select="golomb"
3040 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
3041 rtsp_demuxer_select="http_protocol rtpdec"
3042 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
3043 sap_demuxer_select="sdp_demuxer"
3044 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
3045 sdp_demuxer_select="rtpdec"
3046 smoothstreaming_muxer_select="ismv_muxer"
3047 spdif_demuxer_select="adts_header"
3048 spdif_muxer_select="adts_header"
3049 spx_muxer_select="ogg_muxer"
3050 swf_demuxer_suggest="zlib"
3051 tak_demuxer_select="tak_parser"
3052 tg2_muxer_select="mov_muxer"
3053 tgp_muxer_select="mov_muxer"
3054 vobsub_demuxer_select="mpegps_demuxer"
3055 w64_demuxer_select="wav_demuxer"
3056 w64_muxer_select="wav_muxer"
3057 wav_demuxer_select="riffdec"
3058 wav_muxer_select="riffenc"
3059 webm_muxer_select="iso_media riffenc"
3060 webm_dash_manifest_demuxer_select="matroska_demuxer"
3061 wtv_demuxer_select="mpegts_demuxer riffdec"
3062 wtv_muxer_select="mpegts_muxer riffenc"
3063 xmv_demuxer_select="riffdec"
3064 xwma_demuxer_select="riffdec"
3065
3066 # indevs / outdevs
3067 alsa_indev_deps="alsa"
3068 alsa_outdev_deps="alsa"
3069 avfoundation_indev_deps="avfoundation corevideo coremedia pthreads"
3070 avfoundation_indev_suggest="coregraphics applicationservices"
3071 avfoundation_indev_extralibs="-framework Foundation"
3072 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
3073 caca_outdev_deps="libcaca"
3074 decklink_deps_any="libdl LoadLibrary"
3075 decklink_indev_deps="decklink threads"
3076 decklink_indev_extralibs="-lstdc++"
3077 decklink_outdev_deps="decklink threads"
3078 decklink_outdev_extralibs="-lstdc++"
3079 libndi_newtek_indev_deps="libndi_newtek"
3080 libndi_newtek_indev_extralibs="-lndi"
3081 libndi_newtek_outdev_deps="libndi_newtek"
3082 libndi_newtek_outdev_extralibs="-lndi"
3083 dshow_indev_deps="IBaseFilter"
3084 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
3085 fbdev_indev_deps="linux_fb_h"
3086 fbdev_outdev_deps="linux_fb_h"
3087 gdigrab_indev_deps="CreateDIBSection"
3088 gdigrab_indev_extralibs="-lgdi32"
3089 gdigrab_indev_select="bmp_decoder"
3090 iec61883_indev_deps="libiec61883"
3091 jack_indev_deps="libjack"
3092 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
3093 kmsgrab_indev_deps="libdrm"
3094 lavfi_indev_deps="avfilter"
3095 libcdio_indev_deps="libcdio"
3096 libdc1394_indev_deps="libdc1394"
3097 openal_indev_deps="openal"
3098 opengl_outdev_deps="opengl"
3099 oss_indev_deps_any="sys_soundcard_h"
3100 oss_outdev_deps_any="sys_soundcard_h"
3101 pulse_indev_deps="libpulse"
3102 pulse_outdev_deps="libpulse"
3103 sdl2_outdev_deps="sdl2"
3104 sndio_indev_deps="sndio"
3105 sndio_outdev_deps="sndio"
3106 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
3107 v4l2_indev_suggest="libv4l2"
3108 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
3109 v4l2_outdev_suggest="libv4l2"
3110 vfwcap_indev_deps="vfw32 vfwcap_defines"
3111 xcbgrab_indev_deps="libxcb"
3112 xcbgrab_indev_suggest="libxcb_shm libxcb_shape libxcb_xfixes"
3113 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
3114 xv_outdev_extralibs="-lXv -lX11 -lXext"
3115
3116 # protocols
3117 async_protocol_deps="threads"
3118 bluray_protocol_deps="libbluray"
3119 ffrtmpcrypt_protocol_conflict="librtmp_protocol"
3120 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
3121 ffrtmpcrypt_protocol_select="tcp_protocol"
3122 ffrtmphttp_protocol_conflict="librtmp_protocol"
3123 ffrtmphttp_protocol_select="http_protocol"
3124 ftp_protocol_select="tcp_protocol"
3125 gopher_protocol_select="network"
3126 http_protocol_select="tcp_protocol"
3127 http_protocol_suggest="zlib"
3128 httpproxy_protocol_select="tcp_protocol"
3129 httpproxy_protocol_suggest="zlib"
3130 https_protocol_select="tls_protocol"
3131 https_protocol_suggest="zlib"
3132 icecast_protocol_select="http_protocol"
3133 librtmp_protocol_deps="librtmp"
3134 librtmpe_protocol_deps="librtmp"
3135 librtmps_protocol_deps="librtmp"
3136 librtmpt_protocol_deps="librtmp"
3137 librtmpte_protocol_deps="librtmp"
3138 libsmbclient_protocol_deps="libsmbclient gplv3"
3139 libssh_protocol_deps="libssh"
3140 mmsh_protocol_select="http_protocol"
3141 mmst_protocol_select="network"
3142 rtmp_protocol_conflict="librtmp_protocol"
3143 rtmp_protocol_select="tcp_protocol"
3144 rtmp_protocol_suggest="zlib"
3145 rtmpe_protocol_select="ffrtmpcrypt_protocol"
3146 rtmpe_protocol_suggest="zlib"
3147 rtmps_protocol_conflict="librtmp_protocol"
3148 rtmps_protocol_select="tls_protocol"
3149 rtmps_protocol_suggest="zlib"
3150 rtmpt_protocol_select="ffrtmphttp_protocol"
3151 rtmpt_protocol_suggest="zlib"
3152 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
3153 rtmpte_protocol_suggest="zlib"
3154 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
3155 rtmpts_protocol_suggest="zlib"
3156 rtp_protocol_select="udp_protocol"
3157 schannel_conflict="openssl gnutls"
3158 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
3159 sctp_protocol_select="network"
3160 securetransport_conflict="openssl gnutls"
3161 srtp_protocol_select="rtp_protocol srtp"
3162 tcp_protocol_select="network"
3163 tls_protocol_deps_any="gnutls openssl schannel securetransport"
3164 tls_protocol_select="tcp_protocol"
3165 udp_protocol_select="network"
3166 udplite_protocol_select="network"
3167 unix_protocol_deps="sys_un_h"
3168 unix_protocol_select="network"
3169
3170 # filters
3171 afftfilt_filter_deps="avcodec"
3172 afftfilt_filter_select="fft"
3173 afir_filter_deps="avcodec"
3174 afir_filter_select="fft"
3175 amovie_filter_deps="avcodec avformat"
3176 aresample_filter_deps="swresample"
3177 ass_filter_deps="libass"
3178 atempo_filter_deps="avcodec"
3179 atempo_filter_select="rdft"
3180 azmq_filter_deps="libzmq"
3181 blackframe_filter_deps="gpl"
3182 boxblur_filter_deps="gpl"
3183 bs2b_filter_deps="libbs2b"
3184 colormatrix_filter_deps="gpl"
3185 coreimage_filter_deps="coreimage appkit"
3186 coreimage_filter_extralibs="-framework OpenGL"
3187 coreimagesrc_filter_deps="coreimage appkit"
3188 coreimagesrc_filter_extralibs="-framework OpenGL"
3189 cover_rect_filter_deps="avcodec avformat gpl"
3190 cropdetect_filter_deps="gpl"
3191 deinterlace_qsv_filter_deps="libmfx"
3192 deinterlace_vaapi_filter_deps="vaapi"
3193 delogo_filter_deps="gpl"
3194 deshake_filter_select="pixelutils"
3195 deshake_filter_suggest="opencl"
3196 drawtext_filter_deps="libfreetype"
3197 drawtext_filter_suggest="libfontconfig libfribidi"
3198 elbg_filter_deps="avcodec"
3199 eq_filter_deps="gpl"
3200 fftfilt_filter_deps="avcodec"
3201 fftfilt_filter_select="rdft"
3202 find_rect_filter_deps="avcodec avformat gpl"
3203 firequalizer_filter_deps="avcodec"
3204 firequalizer_filter_select="rdft"
3205 flite_filter_deps="libflite"
3206 framerate_filter_select="pixelutils"
3207 frei0r_filter_deps="frei0r libdl"
3208 frei0r_src_filter_deps="frei0r libdl"
3209 fspp_filter_deps="gpl"
3210 geq_filter_deps="gpl"
3211 histeq_filter_deps="gpl"
3212 hqdn3d_filter_deps="gpl"
3213 interlace_filter_deps="gpl"
3214 kerndeint_filter_deps="gpl"
3215 ladspa_filter_deps="ladspa libdl"
3216 mcdeint_filter_deps="avcodec gpl"
3217 movie_filter_deps="avcodec avformat"
3218 mpdecimate_filter_deps="gpl"
3219 mpdecimate_filter_select="pixelutils"
3220 mptestsrc_filter_deps="gpl"
3221 negate_filter_deps="lut_filter"
3222 nnedi_filter_deps="gpl"
3223 ocr_filter_deps="libtesseract"
3224 ocv_filter_deps="libopencv"
3225 overlay_qsv_filter_deps="libmfx"
3226 overlay_qsv_filter_select="qsvvpp"
3227 owdenoise_filter_deps="gpl"
3228 pan_filter_deps="swresample"
3229 perspective_filter_deps="gpl"
3230 phase_filter_deps="gpl"
3231 pp7_filter_deps="gpl"
3232 pp_filter_deps="gpl postproc"
3233 pullup_filter_deps="gpl"
3234 removelogo_filter_deps="avcodec avformat swscale"
3235 repeatfields_filter_deps="gpl"
3236 resample_filter_deps="avresample"
3237 rubberband_filter_deps="librubberband"
3238 sab_filter_deps="gpl swscale"
3239 scale2ref_filter_deps="swscale"
3240 scale_filter_deps="swscale"
3241 scale_qsv_filter_deps="libmfx"
3242 select_filter_select="pixelutils"
3243 showcqt_filter_deps="avcodec avformat swscale"
3244 showcqt_filter_suggest="libfontconfig libfreetype"
3245 showcqt_filter_select="fft"
3246 showfreqs_filter_deps="avcodec"
3247 showfreqs_filter_select="fft"
3248 showspectrum_filter_deps="avcodec"
3249 showspectrum_filter_select="fft"
3250 showspectrumpic_filter_deps="avcodec"
3251 showspectrumpic_filter_select="fft"
3252 signature_filter_deps="gpl avcodec avformat"
3253 smartblur_filter_deps="gpl swscale"
3254 sofalizer_filter_deps="libmysofa avcodec"
3255 sofalizer_filter_select="fft"
3256 spectrumsynth_filter_deps="avcodec"
3257 spectrumsynth_filter_select="fft"
3258 spp_filter_deps="gpl avcodec"
3259 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3260 stereo3d_filter_deps="gpl"
3261 subtitles_filter_deps="avformat avcodec libass"
3262 super2xsai_filter_deps="gpl"
3263 pixfmts_super2xsai_test_deps="super2xsai_filter"
3264 tinterlace_filter_deps="gpl"
3265 tinterlace_merge_test_deps="tinterlace_filter"
3266 tinterlace_pad_test_deps="tinterlace_filter"
3267 tonemap_filter_deps="const_nan"
3268 uspp_filter_deps="gpl avcodec"
3269 unsharp_filter_suggest="opencl"
3270 vaguedenoiser_filter_deps="gpl"
3271 vidstabdetect_filter_deps="libvidstab"
3272 vidstabtransform_filter_deps="libvidstab"
3273 libvmaf_filter_deps="libvmaf"
3274 zmq_filter_deps="libzmq"
3275 zoompan_filter_deps="swscale"
3276 zscale_filter_deps="libzimg const_nan"
3277 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3278 vpp_qsv_filter_deps="libmfx"
3279 vpp_qsv_filter_select="qsvvpp"
3280
3281 # examples
3282 avio_dir_cmd_deps="avformat avutil"
3283 avio_reading_deps="avformat avcodec avutil"
3284 decode_audio_example_deps="avcodec avutil"
3285 decode_video_example_deps="avcodec avutil"
3286 demuxing_decoding_example_deps="avcodec avformat avutil"
3287 encode_audio_example_deps="avcodec avutil"
3288 encode_video_example_deps="avcodec avutil"
3289 extract_mvs_example_deps="avcodec avformat avutil"
3290 filter_audio_example_deps="avfilter avutil"
3291 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3292 filtering_video_example_deps="avfilter avcodec avformat avutil"
3293 http_multiclient_example_deps="avformat avutil fork"
3294 hw_decode_example_deps="avcodec avformat avutil"
3295 metadata_example_deps="avformat avutil"
3296 muxing_example_deps="avcodec avformat avutil swscale"
3297 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
3298 remuxing_example_deps="avcodec avformat avutil"
3299 resampling_audio_example_deps="avutil swresample"
3300 scaling_video_example_deps="avutil swscale"
3301 transcode_aac_example_deps="avcodec avformat swresample"
3302 transcoding_example_deps="avfilter avcodec avformat avutil"
3303
3304 # EXTRALIBS_LIST
3305 cpu_init_extralibs="pthreads_extralibs"
3306 cws2fws_extralibs="zlib_extralibs"
3307
3308 # libraries, in linking order
3309 avcodec_deps="avutil"
3310 avcodec_suggest="libm"
3311 avcodec_select="null_bsf"
3312 avdevice_deps="avformat avcodec avutil"
3313 avdevice_suggest="libm"
3314 avfilter_deps="avutil"
3315 avfilter_suggest="libm"
3316 avformat_deps="avcodec avutil"
3317 avformat_suggest="libm network zlib"
3318 avresample_deps="avutil"
3319 avresample_suggest="libm"
3320 avutil_suggest="clock_gettime cuda libm libdrm libmfx opencl user32 vaapi videotoolbox corefoundation corevideo coremedia wincrypt"
3321 postproc_deps="avutil gpl"
3322 postproc_suggest="libm"
3323 swresample_deps="avutil"
3324 swresample_suggest="libm libsoxr"
3325 swscale_deps="avutil"
3326 swscale_suggest="libm"
3327
3328 avcodec_extralibs="pthreads_extralibs iconv_extralibs"
3329 avfilter_extralibs="pthreads_extralibs"
3330 avutil_extralibs="d3d11va_extralibs nanosleep_extralibs pthreads_extralibs vaapi_drm_extralibs vaapi_x11_extralibs vdpau_x11_extralibs"
3331
3332 # programs
3333 ffmpeg_deps="avcodec avfilter avformat swresample"
3334 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3335                null_filter
3336                trim_filter"
3337 ffmpeg_suggest="ole32 psapi shell32"
3338 ffplay_deps="avcodec avformat swscale swresample sdl2"
3339 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3340 ffplay_suggest="shell32"
3341 ffprobe_deps="avcodec avformat"
3342 ffprobe_suggest="shell32"
3343 ffserver_deps="avformat fork sarestart"
3344 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
3345
3346 # documentation
3347 podpages_deps="perl"
3348 manpages_deps="perl pod2man"
3349 htmlpages_deps="perl"
3350 htmlpages_deps_any="makeinfo_html texi2html"
3351 txtpages_deps="perl makeinfo"
3352 doc_deps_any="manpages htmlpages podpages txtpages"
3353
3354 # default parameters
3355
3356 logfile="ffbuild/config.log"
3357
3358 # installation paths
3359 prefix_default="/usr/local"
3360 bindir_default='${prefix}/bin'
3361 datadir_default='${prefix}/share/ffmpeg'
3362 docdir_default='${prefix}/share/doc/ffmpeg'
3363 incdir_default='${prefix}/include'
3364 libdir_default='${prefix}/lib'
3365 mandir_default='${prefix}/share/man'
3366
3367 # toolchain
3368 ar_default="ar"
3369 cc_default="gcc"
3370 cxx_default="g++"
3371 host_cc_default="gcc"
3372 doxygen_default="doxygen"
3373 install="install"
3374 ln_s_default="ln -s -f"
3375 nm_default="nm -g"
3376 pkg_config_default=pkg-config
3377 ranlib_default="ranlib"
3378 strip_default="strip"
3379 version_script='--version-script'
3380 x86asmexe_default="nasm"
3381 windres_default="windres"
3382 nvcc_default="nvcc"
3383 nvccflags_default="-gencode arch=compute_30,code=sm_30 -O2"
3384 striptype="direct"
3385
3386 # OS
3387 target_os_default=$(tolower $(uname -s))
3388 host_os=$target_os_default
3389
3390 # machine
3391 if test "$target_os_default" = aix; then
3392     arch_default=$(uname -p)
3393     strip_default="strip -X32_64"
3394 else
3395     arch_default=$(uname -m)
3396 fi
3397 cpu="generic"
3398 intrinsics="none"
3399
3400 # configurable options
3401 enable $PROGRAM_LIST
3402 enable $DOCUMENT_LIST
3403 enable $EXAMPLE_LIST
3404 enable $(filter_out avresample $LIBRARY_LIST)
3405 enable stripping
3406
3407 enable asm
3408 enable debug
3409 enable doc
3410 enable faan faandct faanidct
3411 enable optimizations
3412 enable runtime_cpudetect
3413 enable safe_bitstream_reader
3414 enable static
3415 enable swscale_alpha
3416 enable valgrind_backtrace
3417
3418 sws_max_filter_size_default=256
3419 set_default sws_max_filter_size
3420
3421 # internal components are enabled by default
3422 enable $EXTRALIBS_LIST
3423
3424 # Avoid external, non-system, libraries getting enabled by dependency resolution
3425 disable $EXTERNAL_LIBRARY_LIST $HWACCEL_LIBRARY_LIST
3426
3427 # build settings
3428 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3429 LIBPREF="lib"
3430 LIBSUF=".a"
3431 FULLNAME='$(NAME)$(BUILDSUF)'
3432 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3433 SLIBPREF="lib"
3434 SLIBSUF=".so"
3435 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3436 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3437 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3438 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3439 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3440 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3441 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
3442
3443 asflags_filter=echo
3444 cflags_filter=echo
3445 ldflags_filter=echo
3446
3447 AS_C='-c'
3448 AS_O='-o $@'
3449 CC_C='-c'
3450 CC_E='-E -o $@'
3451 CC_O='-o $@'
3452 CXX_C='-c'
3453 CXX_O='-o $@'
3454 OBJCC_C='-c'
3455 OBJCC_E='-E -o $@'
3456 OBJCC_O='-o $@'
3457 X86ASM_O='-o $@'
3458 LD_O='-o $@'
3459 LD_LIB='-l%'
3460 LD_PATH='-L'
3461 HOSTCC_C='-c'
3462 HOSTCC_E='-E -o $@'
3463 HOSTCC_O='-o $@'
3464 HOSTLD_O='-o $@'
3465 NVCC_C='-c'
3466 NVCC_O='-o $@'
3467
3468 host_extralibs='-lm'
3469 host_cflags_filter=echo
3470 host_ldflags_filter=echo
3471
3472 target_path='$(CURDIR)'
3473
3474 # since the object filename is not given with the -MM flag, the compiler
3475 # is only able to print the basename, and we must add the path ourselves
3476 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3477 DEPFLAGS='-MM'
3478
3479 mkdir -p ffbuild
3480
3481 # find source path
3482 if test -f configure; then
3483     source_path=.
3484 else
3485     source_path=$(cd $(dirname "$0"); pwd)
3486     case "$source_path" in
3487         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3488     esac
3489     test -e "$source_path/config.h" &&
3490         die "Out of tree builds are impossible with config.h in source dir."
3491 fi
3492
3493 for v in "$@"; do
3494     r=${v#*=}
3495     l=${v%"$r"}
3496     r=$(sh_quote "$r")
3497     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3498 done
3499
3500 find_things(){
3501     thing=$1
3502     pattern=$2
3503     file=$source_path/$3
3504     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
3505 }
3506
3507 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
3508 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
3509 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
3510 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
3511 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
3512 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
3513 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
3514 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
3515 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
3516
3517 find_things_extern(){
3518     thing=$1
3519     pattern=$2
3520     file=$source_path/$3
3521     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
3522 }
3523
3524 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3525 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3526
3527 AVCODEC_COMPONENTS_LIST="
3528     $BSF_LIST
3529     $DECODER_LIST
3530     $ENCODER_LIST
3531     $HWACCEL_LIST
3532     $PARSER_LIST
3533 "
3534
3535 AVDEVICE_COMPONENTS_LIST="
3536     $INDEV_LIST
3537     $OUTDEV_LIST
3538 "
3539
3540 AVFILTER_COMPONENTS_LIST="
3541     $FILTER_LIST
3542 "
3543
3544 AVFORMAT_COMPONENTS_LIST="
3545     $DEMUXER_LIST
3546     $MUXER_LIST
3547     $PROTOCOL_LIST
3548 "
3549
3550 ALL_COMPONENTS="
3551     $AVCODEC_COMPONENTS_LIST
3552     $AVDEVICE_COMPONENTS_LIST
3553     $AVFILTER_COMPONENTS_LIST
3554     $AVFORMAT_COMPONENTS_LIST
3555 "
3556
3557 for n in $COMPONENT_LIST; do
3558     v=$(toupper ${n%s})_LIST
3559     eval enable \$$v
3560     eval ${n}_if_any="\$$v"
3561 done
3562
3563 enable $ARCH_EXT_LIST
3564
3565 die_unknown(){
3566     echo "Unknown option \"$1\"."
3567     echo "See $0 --help for available options."
3568     exit 1
3569 }
3570
3571 print_in_columns() {
3572     cols=$(expr $ncols / 24)
3573     cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
3574 }
3575
3576 show_list() {
3577     suffix=_$1
3578     shift
3579     echo $* | sed s/$suffix//g | print_in_columns
3580     exit 0
3581 }
3582
3583 rand_list(){
3584     IFS=', '
3585     set -- $*
3586     unset IFS
3587     for thing; do
3588         comp=${thing%:*}
3589         prob=${thing#$comp}
3590         prob=${prob#:}
3591         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3592         echo "prob ${prob:-0.5}"
3593         printf '%s\n' $comp
3594     done
3595 }
3596
3597 do_random(){
3598     action=$1
3599     shift
3600     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3601     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3602 }
3603
3604 for opt do
3605     optval="${opt#*=}"
3606     case "$opt" in
3607         --extra-ldflags=*)
3608             add_ldflags $optval
3609         ;;
3610         --extra-ldexeflags=*)
3611             add_ldexeflags $optval
3612         ;;
3613         --extra-ldsoflags=*)
3614             add_ldsoflags $optval
3615         ;;
3616         --extra-ldlibflags=*)
3617             warn "The --extra-ldlibflags option is only provided for compatibility and will be\n"\
3618                  "removed in the future. Use --extra-ldsoflags instead."
3619             add_ldsoflags $optval
3620         ;;
3621         --extra-libs=*)
3622             add_extralibs $optval
3623         ;;
3624         --disable-devices)
3625             disable $INDEV_LIST $OUTDEV_LIST
3626         ;;
3627         --enable-debug=*)
3628             debuglevel="$optval"
3629         ;;
3630         --disable-programs)
3631             disable $PROGRAM_LIST
3632         ;;
3633         --disable-everything)
3634             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3635         ;;
3636         --disable-all)
3637             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3638             disable $LIBRARY_LIST $PROGRAM_LIST doc
3639             enable avutil
3640         ;;
3641         --enable-random|--disable-random)
3642             action=${opt%%-random}
3643             do_random ${action#--} $COMPONENT_LIST
3644         ;;
3645         --enable-random=*|--disable-random=*)
3646             action=${opt%%-random=*}
3647             do_random ${action#--} $optval
3648         ;;
3649         --enable-sdl)
3650             enable sdl2
3651         ;;
3652         --enable-*=*|--disable-*=*)
3653             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3654             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3655             eval list=\$$(toupper $thing)_LIST
3656             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3657             list=$(filter "$name" $list)
3658             [ "$list" = "" ] && warn "Option $opt did not match anything"
3659             $action $list
3660         ;;
3661         --enable-yasm|--disable-yasm)
3662             warn "The ${opt} option is only provided for compatibility and will be\n"\
3663                  "removed in the future. Use --enable-x86asm / --disable-x86asm instead."
3664             test $opt = --enable-yasm && x86asm=yes || x86asm=no
3665         ;;
3666         --yasmexe=*)
3667             warn "The --yasmexe option is only provided for compatibility and will be\n"\
3668                  "removed in the future. Use --x86asmexe instead."
3669             x86asmexe="$optval"
3670         ;;
3671         --enable-?*|--disable-?*)
3672             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3673             if is_in $option $COMPONENT_LIST; then
3674                 test $action = disable && action=unset
3675                 eval $action \$$(toupper ${option%s})_LIST
3676             elif is_in $option $CMDLINE_SELECT; then
3677                 $action $option
3678             else
3679                 die_unknown $opt
3680             fi
3681         ;;
3682         --list-*)
3683             NAME="${opt#--list-}"
3684             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3685             NAME=${NAME%s}
3686             eval show_list $NAME \$$(toupper $NAME)_LIST
3687         ;;
3688         --help|-h) show_help
3689         ;;
3690         --quiet|-q) quiet=yes
3691         ;;
3692         --fatal-warnings) enable fatal_warnings
3693         ;;
3694         --libfuzzer=*)
3695             libfuzzer_path="$optval"
3696         ;;
3697         *)
3698             optname="${opt%%=*}"
3699             optname="${optname#--}"
3700             optname=$(echo "$optname" | sed 's/-/_/g')
3701             if is_in $optname $CMDLINE_SET; then
3702                 eval $optname='$optval'
3703             elif is_in $optname $CMDLINE_APPEND; then
3704                 append $optname "$optval"
3705             else
3706                 die_unknown $opt
3707             fi
3708         ;;
3709     esac
3710 done
3711
3712 for e in $env; do
3713     eval "export $e"
3714 done
3715
3716 if disabled autodetect; then
3717
3718     # Unless iconv is explicitely disabled by the user, we still want to probe
3719     # for the iconv from the libc.
3720     disabled iconv || enable libc_iconv
3721
3722     disable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3723     disable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3724 fi
3725 # Mark specifically enabled, but normally autodetected libraries as requested.
3726 for lib in $AUTODETECT_LIBS; do
3727     enabled $lib && request $lib
3728 done
3729 #TODO: switch to $AUTODETECT_LIBS when $THREADS_LIST is supported the same way
3730 enable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3731 enable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3732
3733 disabled logging && logfile=/dev/null
3734
3735 # we need to build at least one lib type
3736 if ! enabled_any static shared; then
3737     cat <<EOF
3738 At least one library type must be built.
3739 Specify --enable-static to build the static libraries or --enable-shared to
3740 build the shared libraries as well. To only build the shared libraries specify
3741 --disable-static in addition to --enable-shared.
3742 EOF
3743     exit 1
3744 fi
3745
3746 die_license_disabled() {
3747     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
3748 }
3749
3750 die_license_disabled_gpl() {
3751     enabled $1 || { enabled $v && die "$v is incompatible with the gpl and --enable-$1 is not specified."; }
3752 }
3753
3754 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3755 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3756
3757 enabled gpl && map "die_license_disabled_gpl nonfree" $EXTERNAL_LIBRARY_NONFREE_LIST
3758 map "die_license_disabled nonfree" $HWACCEL_LIBRARY_NONFREE_LIST
3759
3760 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3761
3762 enabled_all gnutls openssl &&
3763     die "GnuTLS and OpenSSL must not be enabled at the same time."
3764
3765 # Disable all the library-specific components if the library itself
3766 # is disabled, see AVCODEC_LIST and following _LIST variables.
3767
3768 disable_components(){
3769     disabled ${1} && disable $(
3770         eval components="\$$(toupper ${1})_COMPONENTS"
3771         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
3772     )
3773 }
3774
3775 map 'disable_components $v' $LIBRARY_LIST
3776
3777 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
3778 set >> $logfile
3779
3780 test -n "$valgrind" && toolchain="valgrind-memcheck"
3781
3782 enabled ossfuzz && {
3783     add_cflags  -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp -fno-omit-frame-pointer
3784     add_ldflags -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp
3785 }
3786
3787 case "$toolchain" in
3788     *-asan)
3789         cc_default="${toolchain%-asan}"
3790         add_cflags  -fsanitize=address
3791         add_ldflags -fsanitize=address
3792     ;;
3793     *-msan)
3794         cc_default="${toolchain%-msan}"
3795         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
3796         add_ldflags -fsanitize=memory
3797     ;;
3798     *-tsan)
3799         cc_default="${toolchain%-tsan}"
3800         add_cflags  -fsanitize=thread -fPIE
3801         add_ldflags -fsanitize=thread -pie
3802         case "$toolchain" in
3803             gcc-tsan)
3804                 add_cflags  -fPIC
3805                 add_ldflags -fPIC
3806                 ;;
3807         esac
3808     ;;
3809     *-usan)
3810         cc_default="${toolchain%-usan}"
3811         add_cflags  -fsanitize=undefined
3812         add_ldflags -fsanitize=undefined
3813     ;;
3814     valgrind-*)
3815         target_exec_default="valgrind"
3816         case "$toolchain" in
3817             valgrind-massif)
3818                 target_exec_args="--tool=massif --alloc-fn=av_malloc --alloc-fn=av_mallocz --alloc-fn=av_calloc --alloc-fn=av_fast_padded_malloc --alloc-fn=av_fast_malloc --alloc-fn=av_realloc_f --alloc-fn=av_fast_realloc --alloc-fn=av_realloc"
3819                 ;;
3820             valgrind-memcheck)
3821                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3822                 ;;
3823         esac
3824     ;;
3825     msvc)
3826         # Check whether the current MSVC version needs the C99 converter.
3827         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3828         # support enough of C99 to build ffmpeg. Default to the new
3829         # behaviour if the regexp was unable to match anything, since this
3830         # successfully parses the version number of existing supported
3831         # versions that require the converter (MSVC 2010 and 2012).
3832         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3833         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3834             cc_default="cl"
3835             cxx_default="cl"
3836         else
3837             cc_default="c99wrap cl"
3838             cxx_default="c99wrap cl"
3839         fi
3840         ld_default="$source_path/compat/windows/mslink"
3841         nm_default="dumpbin -symbols"
3842         ar_default="lib"
3843         case "$arch" in
3844         aarch64|arm64)
3845             as_default="armasm64"
3846             ;;
3847         arm*)
3848             as_default="armasm"
3849             ;;
3850         esac
3851         target_os_default="win32"
3852         # Use a relative path for TMPDIR. This makes sure all the
3853         # ffconf temp files are written with a relative path, avoiding
3854         # issues with msys/win32 path conversion for MSVC parameters
3855         # such as -Fo<file> or -out:<file>.
3856         TMPDIR=.
3857     ;;
3858     icl)
3859         cc_default="icl"
3860         ld_default="xilink"
3861         nm_default="dumpbin -symbols"
3862         ar_default="xilib"
3863         target_os_default="win32"
3864         TMPDIR=.
3865     ;;
3866     gcov)
3867         add_cflags  -fprofile-arcs -ftest-coverage
3868         add_ldflags -fprofile-arcs -ftest-coverage
3869     ;;
3870     llvm-cov)
3871         add_cflags -fprofile-arcs -ftest-coverage
3872         add_ldflags --coverage
3873     ;;
3874     hardened)
3875         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3876         add_cflags   -fno-strict-overflow -fstack-protector-all
3877         add_ldflags  -Wl,-z,relro -Wl,-z,now
3878         add_cflags   -fPIE
3879         add_ldexeflags -fPIE -pie
3880     ;;
3881     ?*)
3882         die "Unknown toolchain $toolchain"
3883     ;;
3884 esac
3885
3886 test -n "$cross_prefix" && enable cross_compile
3887
3888 if enabled cross_compile; then
3889     test -n "$arch" && test -n "$target_os" ||
3890         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
3891 fi
3892
3893 ar_default="${cross_prefix}${ar_default}"
3894 cc_default="${cross_prefix}${cc_default}"
3895 cxx_default="${cross_prefix}${cxx_default}"
3896 nm_default="${cross_prefix}${nm_default}"
3897 pkg_config_default="${cross_prefix}${pkg_config_default}"
3898 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
3899     ranlib_default="${cross_prefix}${ranlib_default} -D"
3900 else
3901     ranlib_default="${cross_prefix}${ranlib_default}"
3902 fi
3903 strip_default="${cross_prefix}${strip_default}"
3904 windres_default="${cross_prefix}${windres_default}"
3905
3906 sysinclude_default="${sysroot}/usr/include"
3907
3908 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3909     target_exec target_os x86asmexe nvcc
3910 enabled cross_compile || host_cc_default=$cc
3911 set_default host_cc
3912
3913 pkg_config_fail_message=""
3914 if ! $pkg_config --version >/dev/null 2>&1; then
3915     warn "$pkg_config not found, library detection may fail."
3916     pkg_config=false
3917 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
3918     pkg_config_fail_message="
3919 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
3920 fi
3921
3922 if test $doxygen != $doxygen_default && \
3923   ! $doxygen --version >/dev/null 2>&1; then
3924     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3925 fi
3926
3927 exesuf() {
3928     case $1 in
3929         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3930     esac
3931 }
3932
3933 EXESUF=$(exesuf $target_os)
3934 HOSTEXESUF=$(exesuf $host_os)
3935
3936 # set temporary file name
3937 : ${TMPDIR:=$TEMPDIR}
3938 : ${TMPDIR:=$TMP}
3939 : ${TMPDIR:=/tmp}
3940
3941 if [ -n "$tempprefix" ] ; then
3942     mktemp(){
3943         tmpname="$tempprefix.${HOSTNAME}.${UID}"
3944         echo "$tmpname"
3945         mkdir "$tmpname"
3946     }
3947 elif ! check_cmd mktemp -u XXXXXX; then
3948     # simple replacement for missing mktemp
3949     # NOT SAFE FOR GENERAL USE
3950     mktemp(){
3951         tmpname="${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3952         echo "$tmpname"
3953         mkdir "$tmpname"
3954     }
3955 fi
3956
3957 FFTMPDIR=$(mktemp -d "${TMPDIR}/ffconf.XXXXXXXX" 2> /dev/null) ||
3958     die "Unable to create temporary directory in $TMPDIR."
3959
3960 tmpfile(){
3961     tmp="${FFTMPDIR}/test"$2
3962     (set -C; exec > $tmp) 2> /dev/null ||
3963         die "Unable to create temporary file in $FFTMPDIR."
3964     eval $1=$tmp
3965 }
3966
3967 trap 'rm -rf -- "$FFTMPDIR"' EXIT
3968 trap 'exit 2' INT
3969
3970 tmpfile TMPASM .asm
3971 tmpfile TMPC   .c
3972 tmpfile TMPCPP .cpp
3973 tmpfile TMPE   $EXESUF
3974 tmpfile TMPH   .h
3975 tmpfile TMPM   .m
3976 tmpfile TMPO   .o
3977 tmpfile TMPS   .S
3978 tmpfile TMPSH  .sh
3979 tmpfile TMPV   .ver
3980
3981 unset -f mktemp
3982
3983 chmod +x $TMPE
3984
3985 # make sure we can execute files in $TMPDIR
3986 cat > $TMPSH 2>> $logfile <<EOF
3987 #! /bin/sh
3988 EOF
3989 chmod +x $TMPSH >> $logfile 2>&1
3990 if ! $TMPSH >> $logfile 2>&1; then
3991     cat <<EOF
3992 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3993 variable to another directory and make sure that it is not mounted noexec.
3994 EOF
3995     die "Sanity test failed."
3996 fi
3997
3998 armasm_flags(){
3999     for flag; do
4000         case $flag in
4001             # Filter out MSVC cl.exe options from cflags that shouldn't
4002             # be passed to gas-preprocessor
4003             -M[TD]*)                                            ;;
4004             *)                  echo $flag                      ;;
4005         esac
4006    done
4007 }
4008
4009 cparser_flags(){
4010     for flag; do
4011         case $flag in
4012             -Wno-switch)             echo -Wno-switch-enum ;;
4013             -Wno-format-zero-length) ;;
4014             -Wdisabled-optimization) ;;
4015             -Wno-pointer-sign)       echo -Wno-other ;;
4016             *)                       echo $flag ;;
4017         esac
4018     done
4019 }
4020
4021 msvc_common_flags(){
4022     for flag; do
4023         case $flag in
4024             # In addition to specifying certain flags under the compiler
4025             # specific filters, they must be specified here as well or else the
4026             # generic catch all at the bottom will print the original flag.
4027             -Wall)                ;;
4028             -Wextra)              ;;
4029             -std=c99)             ;;
4030             # Common flags
4031             -fomit-frame-pointer) ;;
4032             -g)                   echo -Z7 ;;
4033             -fno-math-errno)      ;;
4034             -fno-common)          ;;
4035             -fno-signed-zeros)    ;;
4036             -fPIC)                ;;
4037             -mthumb)              ;;
4038             -march=*)             ;;
4039             -lz)                  echo zlib.lib ;;
4040             -lx264)               echo libx264.lib ;;
4041             -lstdc++)             ;;
4042             -l*)                  echo ${flag#-l}.lib ;;
4043             -LARGEADDRESSAWARE)   echo $flag ;;
4044             -L*)                  echo -libpath:${flag#-L} ;;
4045             *)                    echo $flag ;;
4046         esac
4047     done
4048 }
4049
4050 msvc_flags(){
4051     msvc_common_flags "$@"
4052     for flag; do
4053         case $flag in
4054             -Wall)                echo -W3 -wd4018 -wd4146 -wd4244 -wd4305     \
4055                                        -wd4554 ;;
4056             -Wextra)              echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
4057                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
4058                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
4059                                        -wd4307 \
4060                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
4061         esac
4062     done
4063 }
4064
4065 icl_flags(){
4066     msvc_common_flags "$@"
4067     for flag; do
4068         case $flag in
4069             # Despite what Intel's documentation says -Wall, which is supported
4070             # on Windows, does enable remarks so disable them here.
4071             -Wall)                echo $flag -Qdiag-disable:remark ;;
4072             -std=c99)             echo -Qstd=c99 ;;
4073             -flto)                echo -ipo ;;
4074         esac
4075     done
4076 }
4077
4078 icc_flags(){
4079     for flag; do
4080         case $flag in
4081             -flto)                echo -ipo ;;
4082             *)                    echo $flag ;;
4083         esac
4084     done
4085 }
4086
4087 pgi_flags(){
4088     for flag; do
4089         case $flag in
4090             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
4091             -fomit-frame-pointer) echo -Mnoframe ;;
4092             -g)                   echo -gopt ;;
4093             *)                    echo $flag ;;
4094         esac
4095     done
4096 }
4097
4098 suncc_flags(){
4099     for flag; do
4100         case $flag in
4101             -march=*|-mcpu=*)
4102                 case "${flag#*=}" in
4103                     native)                   echo -xtarget=native       ;;
4104                     v9|niagara)               echo -xarch=sparc          ;;
4105                     ultrasparc)               echo -xarch=sparcvis       ;;
4106                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
4107                     i586|pentium)             echo -xchip=pentium        ;;
4108                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
4109                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
4110                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
4111                     pentium4*)          echo -xtarget=pentium4           ;;
4112                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
4113                     *-sse3)             echo -xarch=sse3                 ;;
4114                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
4115                     bonnell)                   echo -xarch=ssse3         ;;
4116                     corei7|nehalem)            echo -xtarget=nehalem     ;;
4117                     westmere)                  echo -xtarget=westmere    ;;
4118                     silvermont)                echo -xarch=sse4_2        ;;
4119                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
4120                     core-avx*|ivybridge|haswell|broadwell|skylake*|knl)
4121                                                echo -xarch=avx           ;;
4122                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
4123                     btver1)                    echo -xarch=amdsse4a      ;;
4124                     btver2|bdver*|znver*)      echo -xarch=avx           ;;
4125                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
4126                     k8|opteron|athlon64|athlon-fx)
4127                                                echo -xarch=sse2a         ;;
4128                     athlon*)                   echo -xarch=pentium_proa  ;;
4129                 esac
4130                 ;;
4131             -std=c99)             echo -xc99              ;;
4132             -fomit-frame-pointer) echo -xregs=frameptr    ;;
4133             -fPIC)                echo -KPIC -xcode=pic32 ;;
4134             -W*,*)                echo $flag              ;;
4135             -f*-*|-W*|-mimpure-text)                      ;;
4136             -shared)              echo -G                 ;;
4137             *)                    echo $flag              ;;
4138         esac
4139     done
4140 }
4141
4142 tms470_flags(){
4143     for flag; do
4144         case $flag in
4145             -march=*|-mcpu=*)
4146                 case "${flag#*=}" in
4147                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
4148                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
4149                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
4150                     armv6*|arm11*)          echo -mv=6   ;;
4151                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
4152                                             echo -mv=5e  ;;
4153                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
4154                 esac
4155                 ;;
4156             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
4157             -mfpu=vfp)      echo --float_support=vfpv2        ;;
4158             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
4159             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
4160             -msoft-float)   echo --float_support=vfplib       ;;
4161             -O[0-3]|-mf=*)  echo $flag                        ;;
4162             -g)             echo -g -mn                       ;;
4163             -pds=*)         echo $flag                        ;;
4164             -D*|-I*)        echo $flag                        ;;
4165             --gcc|--abi=*)  echo $flag                        ;;
4166             -me)            echo $flag                        ;;
4167         esac
4168     done
4169 }
4170
4171 probe_cc(){
4172     pfx=$1
4173     _cc=$2
4174     first=$3
4175
4176     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
4177     unset _ld_o _ldflags _ld_lib _ld_path
4178     unset _depflags _DEPCMD _DEPFLAGS
4179     _flags_filter=echo
4180
4181     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
4182         true # no-op to avoid reading stdin in following checks
4183     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
4184         _type=llvm_gcc
4185         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
4186         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
4187         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4188         _cflags_speed='-O3'
4189         _cflags_size='-Os'
4190     elif $_cc -v 2>&1 | grep -qi ^gcc; then
4191         _type=gcc
4192         gcc_version=$($_cc --version | head -n1)
4193         gcc_basever=$($_cc -dumpversion)
4194         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
4195         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
4196         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
4197         case $gcc_basever in
4198             2) ;;
4199             2.*) ;;
4200             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
4201         esac
4202         if [ "$first" = true ]; then
4203             case $gcc_basever in
4204                 4.2*)
4205                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
4206             esac
4207         fi
4208         _cflags_speed='-O3'
4209         _cflags_size='-Os'
4210     elif $_cc --version 2>/dev/null | grep -q ^icc; then
4211         _type=icc
4212         _ident=$($_cc --version | head -n1)
4213         _depflags='-MMD'
4214         _cflags_speed='-O3'
4215         _cflags_size='-Os'
4216         _cflags_noopt='-O1'
4217         _flags_filter=icc_flags
4218     elif $_cc -v 2>&1 | grep -q xlc; then
4219         _type=xlc
4220         _ident=$($_cc -qversion 2>/dev/null | head -n1)
4221         _cflags_speed='-O5'
4222         _cflags_size='-O5 -qcompact'
4223     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
4224         test -d "$sysroot" || die "No valid sysroot specified."
4225         _type=armcc
4226         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
4227         armcc_conf="$PWD/armcc.conf"
4228         $_cc --arm_linux_configure                 \
4229              --arm_linux_config_file="$armcc_conf" \
4230              --configure_sysroot="$sysroot"        \
4231              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
4232              die "Error creating armcc configuration file."
4233         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
4234         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
4235         as_default="${cross_prefix}gcc"
4236         _depflags='-MMD'
4237         _cflags_speed='-O3'
4238         _cflags_size='-Os'
4239     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
4240         _type=tms470
4241         _ident=$($_cc -version | head -n1 | tr -s ' ')
4242         _flags='--gcc --abi=eabi -me'
4243         _cc_e='-ppl -fe=$@'
4244         _cc_o='-fe=$@'
4245         _depflags='-ppa -ppd=$(@:.o=.d)'
4246         _cflags_speed='-O3 -mf=5'
4247         _cflags_size='-O3 -mf=2'
4248         _flags_filter=tms470_flags
4249     elif $_cc -v 2>&1 | grep -q clang; then
4250         _type=clang
4251         _ident=$($_cc --version 2>/dev/null | head -n1)
4252         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4253         _cflags_speed='-O3'
4254         _cflags_size='-Oz'
4255     elif $_cc -V 2>&1 | grep -q Sun; then
4256         _type=suncc
4257         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
4258         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
4259         _DEPFLAGS='-xM1 -xc99'
4260         _ldflags='-std=c99'
4261         _cflags_speed='-O5'
4262         _cflags_size='-O5 -xspace'
4263         _flags_filter=suncc_flags
4264     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
4265         _type=pathscale
4266         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4267         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4268         _cflags_speed='-O2'
4269         _cflags_size='-Os'
4270         _flags_filter='filter_out -Wdisabled-optimization'
4271     elif $_cc -v 2>&1 | grep -q Open64; then
4272         _type=open64
4273         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4274         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4275         _cflags_speed='-O2'
4276         _cflags_size='-Os'
4277         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
4278     elif $_cc -V 2>&1 | grep -q Portland; then
4279         _type=pgi
4280         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
4281         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
4282         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
4283         _cflags_size="-O2 -Munroll=c:1 $opt_common"
4284         _cflags_noopt="-O"
4285         _flags_filter=pgi_flags
4286     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
4287         _type=armasm
4288         _ident=$($_cc | head -n1)
4289         # 4509: "This form of conditional instruction is deprecated"
4290         _flags="-nologo -ignore 4509"
4291         _flags_filter=armasm_flags
4292     elif $_cc 2>&1 | grep -q Intel; then
4293         _type=icl
4294         _ident=$($_cc 2>&1 | head -n1)
4295         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
4296         # Not only is O3 broken on 13.x+ but it is slower on all previous
4297         # versions (tested) as well.
4298         _cflags_speed="-O2"
4299         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
4300         if $_cc 2>&1 | grep -q Linker; then
4301             _ld_o='-out:$@'
4302         else
4303             _ld_o='-Fe$@'
4304         fi
4305         _cc_o='-Fo$@'
4306         _cc_e='-P'
4307         _flags_filter=icl_flags
4308         _ld_lib='lib%.a'
4309         _ld_path='-libpath:'
4310         # -Qdiag-error to make icl error when seeing certain unknown arguments
4311         _flags='-nologo -Qdiag-error:4044,10157'
4312         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
4313         # with MSVC which enables it by default.
4314         _cflags='-Qms0 -Qvec- -Qsimd- -GS -fp:precise'
4315         disable stripping
4316     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
4317         # lld can emulate multiple different linkers; in ms link.exe mode,
4318         # the -? parameter gives the help output which contains an identifyable
4319         # string, while it gives an error in other modes.
4320         _type=lld-link
4321         # The link.exe mode doesn't have a switch for getting the version,
4322         # but we can force it back to gnu mode and get the version from there.
4323         _ident=$($_cc -flavor gnu --version 2>/dev/null)
4324         _ld_o='-out:$@'
4325         _flags_filter=msvc_flags
4326         _ld_lib='lib%.a'
4327         _ld_path='-libpath:'
4328     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
4329         _type=msvc
4330         _ident=$($_cc 2>&1 | head -n1)
4331         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
4332         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
4333         _cflags_speed="-O2"
4334         _cflags_size="-O1"
4335         _cflags_noopt="-O1"
4336         if $_cc -nologo- 2>&1 | grep -q Linker; then
4337             _ld_o='-out:$@'
4338         else
4339             _ld_o='-Fe$@'
4340         fi
4341         _cc_o='-Fo$@'
4342         _cc_e='-P -Fi$@'
4343         _flags_filter=msvc_flags
4344         _ld_lib='lib%.a'
4345         _ld_path='-libpath:'
4346         _flags='-nologo'
4347         disable stripping
4348     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
4349         _type=cparser
4350         _ident=$($_cc --version | head -n1)
4351         _depflags='-MMD'
4352         _cflags_speed='-O4'
4353         _cflags_size='-O2'
4354         _flags_filter=cparser_flags
4355     fi
4356
4357     eval ${pfx}_type=\$_type
4358     eval ${pfx}_ident=\$_ident
4359 }
4360
4361 set_ccvars(){
4362     eval ${1}_C=\${_cc_c-\${${1}_C}}
4363     eval ${1}_E=\${_cc_e-\${${1}_E}}
4364     eval ${1}_O=\${_cc_o-\${${1}_O}}
4365
4366     if [ -n "$_depflags" ]; then
4367         eval ${1}_DEPFLAGS=\$_depflags
4368     else
4369         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
4370         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
4371         eval DEP${1}FLAGS=\$_flags
4372     fi
4373 }
4374
4375 probe_cc cc "$cc" "true"
4376 cflags_filter=$_flags_filter
4377 cflags_speed=$_cflags_speed
4378 cflags_size=$_cflags_size
4379 cflags_noopt=$_cflags_noopt
4380 add_cflags $_flags $_cflags
4381 cc_ldflags=$_ldflags
4382 set_ccvars CC
4383 set_ccvars CXX
4384
4385 probe_cc hostcc "$host_cc"
4386 host_cflags_filter=$_flags_filter
4387 host_cflags_speed=$_cflags_speed
4388 add_host_cflags  $_flags $_cflags
4389 set_ccvars HOSTCC
4390
4391 test -n "$cc_type" && enable $cc_type ||
4392     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4393
4394 : ${as_default:=$cc}
4395 : ${objcc_default:=$cc}
4396 : ${dep_cc_default:=$cc}
4397 : ${ld_default:=$cc}
4398 : ${host_ld_default:=$host_cc}
4399 set_default ar as objcc dep_cc ld ln_s host_ld windres
4400
4401 probe_cc as "$as"
4402 asflags_filter=$_flags_filter
4403 add_asflags $_flags $_cflags
4404 set_ccvars AS
4405
4406 probe_cc objcc "$objcc"
4407 objcflags_filter=$_flags_filter
4408 add_objcflags $_flags $_cflags
4409 set_ccvars OBJC
4410
4411 probe_cc ld "$ld"
4412 ldflags_filter=$_flags_filter
4413 add_ldflags $_flags $_ldflags
4414 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4415 LD_O=${_ld_o-$LD_O}
4416 LD_LIB=${_ld_lib-$LD_LIB}
4417 LD_PATH=${_ld_path-$LD_PATH}
4418
4419 probe_cc hostld "$host_ld"
4420 host_ldflags_filter=$_flags_filter
4421 add_host_ldflags $_flags $_ldflags
4422 HOSTLD_O=${_ld_o-$HOSTLD_O}
4423
4424 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4425     probe_cc depcc "$dep_cc"
4426     CCDEP=${_DEPCMD:-$DEPCMD}
4427     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4428     DEPCCFLAGS=$_flags
4429 fi
4430
4431 if $ar 2>&1 | grep -q Microsoft; then
4432     arflags="-nologo"
4433     ar_o='-out:$@'
4434 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
4435     arflags="rq"
4436     ar_o='$@'
4437 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
4438     arflags='-Xany -r -c'
4439     ar_o='$@'
4440 elif $ar 2>&1 | grep -q "\[D\] "; then
4441     arflags="rcD"
4442     ar_o='$@'
4443 else
4444     arflags="rc"
4445     ar_o='$@'
4446 fi
4447
4448 add_cflags $extra_cflags
4449 add_cxxflags $extra_cxxflags
4450 add_objcflags $extra_objcflags
4451 add_asflags $extra_cflags
4452
4453 if test -n "$sysroot"; then
4454     case "$cc_type" in
4455         gcc|llvm_gcc|clang)
4456             add_cppflags --sysroot="$sysroot"
4457             add_ldflags --sysroot="$sysroot"
4458         ;;
4459         tms470)
4460             add_cppflags -I"$sysinclude"
4461             add_ldflags  --sysroot="$sysroot"
4462         ;;
4463     esac
4464 fi
4465
4466 if test "$cpu" = host; then
4467     enabled cross_compile &&
4468         die "--cpu=host makes no sense when cross-compiling."
4469
4470     case "$cc_type" in
4471         gcc|llvm_gcc)
4472             check_native(){
4473                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4474                 sed -n "/cc1.*$1=/{
4475                             s/.*$1=\\([^ ]*\\).*/\\1/
4476                             p
4477                             q
4478                         }" $TMPE
4479             }
4480             cpu=$(check_native -march || check_native -mcpu)
4481         ;;
4482         clang)
4483             check_native(){
4484                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4485                 sed -n "/cc1.*-target-cpu /{
4486                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4487                             p
4488                             q
4489                         }" $TMPE
4490             }
4491             cpu=$(check_native -march)
4492         ;;
4493     esac
4494
4495     test "${cpu:-host}" = host &&
4496         die "--cpu=host not supported with compiler $cc"
4497 fi
4498
4499 # Deal with common $arch aliases
4500 case "$arch" in
4501     aarch64|arm64)
4502         arch="aarch64"
4503     ;;
4504     arm*|iPad*|iPhone*)
4505         arch="arm"
4506     ;;
4507     mips*|IP*)
4508         case "$arch" in
4509         *el)
4510             add_cppflags -EL
4511             add_ldflags -EL
4512         ;;
4513         *eb)
4514             add_cppflags -EB
4515             add_ldflags -EB
4516         ;;
4517         esac
4518         arch="mips"
4519     ;;
4520     parisc*|hppa*)
4521         arch="parisc"
4522     ;;
4523     "Power Macintosh"|ppc*|powerpc*)
4524         arch="ppc"
4525     ;;
4526     s390|s390x)
4527         arch="s390"
4528     ;;
4529     sh4|sh)
4530         arch="sh4"
4531     ;;
4532     sun4*|sparc*)
4533         arch="sparc"
4534     ;;
4535     tilegx|tile-gx)
4536         arch="tilegx"
4537     ;;
4538     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4539         arch="x86"
4540     ;;
4541 esac
4542
4543 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4544 enable $arch
4545
4546 # Add processor-specific flags
4547 if enabled aarch64; then
4548
4549     case $cpu in
4550         armv*)
4551             cpuflags="-march=$cpu"
4552         ;;
4553         *)
4554             cpuflags="-mcpu=$cpu"
4555         ;;
4556     esac
4557
4558 elif enabled alpha; then
4559
4560     cpuflags="-mcpu=$cpu"
4561
4562 elif enabled arm; then
4563
4564     check_arm_arch() {
4565         check_cpp_condition stddef.h \
4566             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4567             $cpuflags
4568     }
4569
4570     probe_arm_arch() {
4571         if   check_arm_arch 4;        then echo armv4
4572         elif check_arm_arch 4T;       then echo armv4t
4573         elif check_arm_arch 5;        then echo armv5
4574         elif check_arm_arch 5E;       then echo armv5e
4575         elif check_arm_arch 5T;       then echo armv5t
4576         elif check_arm_arch 5TE;      then echo armv5te
4577         elif check_arm_arch 5TEJ;     then echo armv5te
4578         elif check_arm_arch 6;        then echo armv6
4579         elif check_arm_arch 6J;       then echo armv6j
4580         elif check_arm_arch 6K;       then echo armv6k
4581         elif check_arm_arch 6Z;       then echo armv6z
4582         elif check_arm_arch 6ZK;      then echo armv6zk
4583         elif check_arm_arch 6T2;      then echo armv6t2
4584         elif check_arm_arch 7;        then echo armv7
4585         elif check_arm_arch 7A  7_A;  then echo armv7-a
4586         elif check_arm_arch 7S;       then echo armv7-a
4587         elif check_arm_arch 7R  7_R;  then echo armv7-r
4588         elif check_arm_arch 7M  7_M;  then echo armv7-m
4589         elif check_arm_arch 7EM 7E_M; then echo armv7-m
4590         elif check_arm_arch 8A  8_A;  then echo armv8-a
4591         fi
4592     }
4593
4594     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4595
4596     case $cpu in
4597         armv*)
4598             cpuflags="-march=$cpu"
4599             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4600         ;;
4601         *)
4602             cpuflags="-mcpu=$cpu"
4603             case $cpu in
4604                 cortex-a*)                               subarch=armv7a  ;;
4605                 cortex-r*)                               subarch=armv7r  ;;
4606                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4607                 arm11*)                                  subarch=armv6   ;;
4608                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4609                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4610                 *)                             subarch=$(probe_arm_arch) ;;
4611             esac
4612         ;;
4613     esac
4614
4615     case "$subarch" in
4616         armv5t*)    enable fast_clz                ;;
4617         armv[6-8]*)
4618             enable fast_clz
4619             disabled fast_unaligned || enable fast_unaligned
4620             ;;
4621     esac
4622
4623 elif enabled avr32; then
4624
4625     case $cpu in
4626         ap7[02]0[0-2])
4627             subarch="avr32_ap"
4628             cpuflags="-mpart=$cpu"
4629         ;;
4630         ap)
4631             subarch="avr32_ap"
4632             cpuflags="-march=$cpu"
4633         ;;
4634         uc3[ab]*)
4635             subarch="avr32_uc"
4636             cpuflags="-mcpu=$cpu"
4637         ;;
4638         uc)
4639             subarch="avr32_uc"
4640             cpuflags="-march=$cpu"
4641         ;;
4642     esac
4643
4644 elif enabled bfin; then
4645
4646     cpuflags="-mcpu=$cpu"
4647
4648 elif enabled mips; then
4649
4650     cpuflags="-march=$cpu"
4651
4652     if [ "$cpu" != "generic" ]; then
4653         disable mips32r2
4654         disable mips32r5
4655         disable mips64r2
4656         disable mips32r6
4657         disable mips64r6
4658         disable loongson2
4659         disable loongson3
4660
4661         case $cpu in
4662             24kc|24kf*|24kec|34kc|1004kc|24kef*|34kf*|1004kf*|74kc|74kf)
4663                 enable mips32r2
4664                 disable msa
4665             ;;
4666             p5600|i6400|p6600)
4667                 disable mipsdsp
4668                 disable mipsdspr2
4669             ;;
4670             loongson*)
4671                 enable loongson2
4672                 enable loongson3
4673                 enable local_aligned
4674                 enable simd_align_16
4675                 enable fast_64bit
4676                 enable fast_clz
4677                 enable fast_cmov
4678                 enable fast_unaligned
4679                 disable aligned_stack
4680                 disable mipsfpu
4681                 disable mipsdsp
4682                 disable mipsdspr2
4683                 case $cpu in
4684                     loongson3*)
4685                         cpuflags="-march=loongson3a -mhard-float -fno-expensive-optimizations"
4686                     ;;
4687                     loongson2e)
4688                         cpuflags="-march=loongson2e -mhard-float -fno-expensive-optimizations"
4689                     ;;
4690                     loongson2f)
4691                         cpuflags="-march=loongson2f -mhard-float -fno-expensive-optimizations"
4692                     ;;
4693                 esac
4694             ;;
4695             *)
4696                 # Unknown CPU. Disable everything.
4697                 warn "unknown CPU. Disabling all MIPS optimizations."
4698                 disable mipsfpu
4699                 disable mipsdsp
4700                 disable mipsdspr2
4701                 disable msa
4702                 disable mmi
4703             ;;
4704         esac
4705
4706         case $cpu in
4707             24kc)
4708                 disable mipsfpu
4709                 disable mipsdsp
4710                 disable mipsdspr2
4711             ;;
4712             24kf*)
4713                 disable mipsdsp
4714                 disable mipsdspr2
4715             ;;
4716             24kec|34kc|1004kc)
4717                 disable mipsfpu
4718                 disable mipsdspr2
4719             ;;
4720             24kef*|34kf*|1004kf*)
4721                 disable mipsdspr2
4722             ;;
4723             74kc)
4724                 disable mipsfpu
4725             ;;
4726             p5600)
4727                 enable mips32r5
4728                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
4729             ;;
4730             i6400)
4731                 enable mips64r6
4732                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4733             ;;
4734             p6600)
4735                 enable mips64r6
4736                 check_cflags "-mtune=p6600 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4737             ;;
4738         esac
4739     else
4740         # We do not disable anything. Is up to the user to disable the unwanted features.
4741         warn 'generic cpu selected'
4742     fi
4743
4744 elif enabled ppc; then
4745
4746     disable ldbrx
4747
4748     case $(tolower $cpu) in
4749         601|ppc601|powerpc601)
4750             cpuflags="-mcpu=601"
4751             disable altivec
4752         ;;
4753         603*|ppc603*|powerpc603*)
4754             cpuflags="-mcpu=603"
4755             disable altivec
4756         ;;
4757         604*|ppc604*|powerpc604*)
4758             cpuflags="-mcpu=604"
4759             disable altivec
4760         ;;
4761         g3|75*|ppc75*|powerpc75*)
4762             cpuflags="-mcpu=750"
4763             disable altivec
4764         ;;
4765         g4|745*|ppc745*|powerpc745*)
4766             cpuflags="-mcpu=7450"
4767             disable vsx
4768         ;;
4769         74*|ppc74*|powerpc74*)
4770             cpuflags="-mcpu=7400"
4771             disable vsx
4772         ;;
4773         g5|970|ppc970|powerpc970)
4774             cpuflags="-mcpu=970"
4775             disable vsx
4776         ;;
4777         power[3-6]*)
4778             cpuflags="-mcpu=$cpu"
4779             disable vsx
4780         ;;
4781         power[7-8]*)
4782             cpuflags="-mcpu=$cpu"
4783         ;;
4784         cell)
4785             cpuflags="-mcpu=cell"
4786             enable ldbrx
4787             disable vsx
4788         ;;
4789         e500mc)
4790             cpuflags="-mcpu=e500mc"
4791             disable altivec
4792         ;;
4793         e500v2)
4794             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
4795             disable altivec
4796             disable dcbzl
4797         ;;
4798         e500)
4799             cpuflags="-mcpu=8540 -mhard-float"
4800             disable altivec
4801             disable dcbzl
4802         ;;
4803     esac
4804
4805 elif enabled sparc; then
4806
4807     case $cpu in
4808         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
4809             cpuflags="-mcpu=$cpu"
4810         ;;
4811         ultrasparc*|niagara[234])
4812             cpuflags="-mcpu=$cpu"
4813         ;;
4814     esac
4815
4816 elif enabled x86; then
4817
4818     case $cpu in
4819         i[345]86|pentium)
4820             cpuflags="-march=$cpu"
4821             disable i686
4822             disable mmx
4823         ;;
4824         # targets that do NOT support nopl and conditional mov (cmov)
4825         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
4826             cpuflags="-march=$cpu"
4827             disable i686
4828         ;;
4829         # targets that do support nopl and conditional mov (cmov)
4830         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
4831         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|skylake*|knl\
4832         |amdfam10|barcelona|b[dt]ver*|znver*)
4833             cpuflags="-march=$cpu"
4834             enable i686
4835             enable fast_cmov
4836         ;;
4837         # targets that do support conditional mov but on which it's slow
4838         pentium4|pentium4m|prescott|nocona)
4839             cpuflags="-march=$cpu"
4840             enable i686
4841             disable fast_cmov
4842         ;;
4843     esac
4844
4845 fi
4846
4847 if [ "$cpu" != generic ]; then
4848     add_cflags  $cpuflags
4849     add_asflags $cpuflags
4850     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
4851 fi
4852
4853 # compiler sanity check
4854 check_exec <<EOF
4855 int main(void){ return 0; }
4856 EOF
4857 if test "$?" != 0; then
4858     echo "$cc is unable to create an executable file."
4859     if test -z "$cross_prefix" && ! enabled cross_compile ; then
4860         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
4861         echo "Only do this if you know what cross compiling means."
4862     fi
4863     die "C compiler test failed."
4864 fi
4865
4866 add_cppflags -D_ISOC99_SOURCE
4867 add_cxxflags -D__STDC_CONSTANT_MACROS
4868 check_cxxflags -std=c++11 || check_cxxflags -std=c++0x
4869
4870 # some compilers silently accept -std=c11, so we also need to check that the
4871 # version macro is defined properly
4872 test_cflags_cc -std=c11 ctype.h "__STDC_VERSION__ >= 201112L" &&
4873     add_cflags -std=c11 ||
4874     check_cflags -std=c99
4875
4876 check_cppflags -D_FILE_OFFSET_BITS=64
4877 check_cppflags -D_LARGEFILE_SOURCE
4878
4879 add_host_cppflags -D_ISOC99_SOURCE
4880 check_host_cflags -std=c99
4881 check_host_cflags -Wall
4882 check_host_cflags $host_cflags_speed
4883
4884 check_64bit