Merge commit '26d9b60373bf45bc4f91ff6815f5fa36764d4d7b'
[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-nvenc          disable Nvidia video encoding code [autodetect]
317   --enable-omx             enable OpenMAX IL code [no]
318   --enable-omx-rpi         enable OpenMAX IL code for Raspberry Pi [no]
319   --enable-rkmpp           enable Rockchip Media Process Platform code [no]
320   --disable-vaapi          disable Video Acceleration API (mainly Unix/Intel) code [autodetect]
321   --disable-vdpau          disable Nvidia Video Decode and Presentation API for Unix code [autodetect]
322   --disable-videotoolbox   disable VideoToolbox code [autodetect]
323
324 Toolchain options:
325   --arch=ARCH              select architecture [$arch]
326   --cpu=CPU                select the minimum required CPU (affects
327                            instruction selection, may crash on older CPUs)
328   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
329   --progs-suffix=SUFFIX    program name suffix []
330   --enable-cross-compile   assume a cross-compiler is used
331   --sysroot=PATH           root of cross-build tree
332   --sysinclude=PATH        location of cross-build system headers
333   --target-os=OS           compiler targets OS [$target_os]
334   --target-exec=CMD        command to run executables on target
335   --target-path=DIR        path to view of build directory on target
336   --target-samples=DIR     path to samples directory on target
337   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
338   --toolchain=NAME         set tool defaults according to NAME
339   --nm=NM                  use nm tool NM [$nm_default]
340   --ar=AR                  use archive tool AR [$ar_default]
341   --as=AS                  use assembler AS [$as_default]
342   --ln_s=LN_S              use symbolic link tool LN_S [$ln_s_default]
343   --strip=STRIP            use strip tool STRIP [$strip_default]
344   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
345   --x86asmexe=EXE          use nasm-compatible assembler EXE [$x86asmexe_default]
346   --cc=CC                  use C compiler CC [$cc_default]
347   --cxx=CXX                use C compiler CXX [$cxx_default]
348   --objcc=OCC              use ObjC compiler OCC [$cc_default]
349   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
350   --nvcc=NVCC              use Nvidia CUDA compiler NVCC [$nvcc_default]
351   --ld=LD                  use linker LD [$ld_default]
352   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
353   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
354   --ranlib=RANLIB          use ranlib RANLIB [$ranlib_default]
355   --doxygen=DOXYGEN        use DOXYGEN to generate API doc [$doxygen_default]
356   --host-cc=HOSTCC         use host C compiler HOSTCC
357   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
358   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
359   --host-ld=HOSTLD         use host linker HOSTLD
360   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
361   --host-libs=HLIBS        use libs HLIBS when linking for host
362   --host-os=OS             compiler host OS [$target_os]
363   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
364   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
365   --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
366   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
367   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
368   --extra-ldlibflags=ELDFLAGS add ELDFLAGS to LDLIBFLAGS [$LDLIBFLAGS]
369   --extra-libs=ELIBS       add ELIBS [$ELIBS]
370   --extra-version=STRING   version string suffix []
371   --optflags=OPTFLAGS      override optimization-related compiler flags
372   --nvccflags=NVCCFLAGS    override nvcc flags [$nvccflags_default]
373   --build-suffix=SUFFIX    library name suffix []
374   --enable-pic             build position-independent code
375   --enable-thumb           compile for Thumb instruction set
376   --enable-lto             use link-time optimization
377   --env="ENV=override"     override the environment variables
378
379 Advanced options (experts only):
380   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
381   --custom-allocator=NAME  use a supported custom allocator
382   --disable-symver         disable symbol versioning
383   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
384   --disable-safe-bitstream-reader
385                            disable buffer boundary checking in bitreaders
386                            (faster, but may crash)
387   --sws-max-filter-size=N  the max filter size swscale uses [$sws_max_filter_size_default]
388
389 Optimization options (experts only):
390   --disable-asm            disable all assembly optimizations
391   --disable-altivec        disable AltiVec optimizations
392   --disable-vsx            disable VSX optimizations
393   --disable-power8         disable POWER8 optimizations
394   --disable-amd3dnow       disable 3DNow! optimizations
395   --disable-amd3dnowext    disable 3DNow! extended optimizations
396   --disable-mmx            disable MMX optimizations
397   --disable-mmxext         disable MMXEXT optimizations
398   --disable-sse            disable SSE optimizations
399   --disable-sse2           disable SSE2 optimizations
400   --disable-sse3           disable SSE3 optimizations
401   --disable-ssse3          disable SSSE3 optimizations
402   --disable-sse4           disable SSE4 optimizations
403   --disable-sse42          disable SSE4.2 optimizations
404   --disable-avx            disable AVX optimizations
405   --disable-xop            disable XOP optimizations
406   --disable-fma3           disable FMA3 optimizations
407   --disable-fma4           disable FMA4 optimizations
408   --disable-avx2           disable AVX2 optimizations
409   --disable-aesni          disable AESNI optimizations
410   --disable-armv5te        disable armv5te optimizations
411   --disable-armv6          disable armv6 optimizations
412   --disable-armv6t2        disable armv6t2 optimizations
413   --disable-vfp            disable VFP optimizations
414   --disable-neon           disable NEON optimizations
415   --disable-inline-asm     disable use of inline assembly
416   --disable-x86asm         disable use of standalone x86 assembly
417   --disable-mipsdsp        disable MIPS DSP ASE R1 optimizations
418   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
419   --disable-msa            disable MSA optimizations
420   --disable-mipsfpu        disable floating point MIPS optimizations
421   --disable-mmi            disable Loongson SIMD optimizations
422   --disable-fast-unaligned consider unaligned accesses slow
423
424 Developer options (useful when working on FFmpeg itself):
425   --disable-debug          disable debugging symbols
426   --enable-debug=LEVEL     set the debug level [$debuglevel]
427   --disable-optimizations  disable compiler optimizations
428   --enable-extra-warnings  enable more compiler warnings
429   --disable-stripping      disable stripping of executables and shared libraries
430   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
431                            2 causes a slowdown at runtime.
432   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
433   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
434                            leaks and errors, using the specified valgrind binary.
435                            Cannot be combined with --target-exec
436   --enable-ftrapv          Trap arithmetic overflows
437   --samples=PATH           location of test samples for FATE, if not set use
438                            \$FATE_SAMPLES at make invocation time.
439   --enable-neon-clobber-test check NEON registers for clobbering (should be
440                            used only for debugging purposes)
441   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
442                            should be used only for debugging purposes)
443   --enable-random          randomly enable/disable components
444   --disable-random
445   --enable-random=LIST     randomly enable/disable specific components or
446   --disable-random=LIST    component groups. LIST is a comma-separated list
447                            of NAME[:PROB] entries where NAME is a component
448                            (group) and PROB the probability associated with
449                            NAME (default 0.5).
450   --random-seed=VALUE      seed value for --enable/disable-random
451   --disable-valgrind-backtrace do not print a backtrace under Valgrind
452                            (only applies to --disable-optimizations builds)
453   --enable-osfuzz          Enable building fuzzer tool
454   --libfuzzer=PATH         path to libfuzzer
455   --ignore-tests=TESTS     comma-separated list (without "fate-" prefix
456                            in the name) of tests whose result is ignored
457   --enable-linux-perf      enable Linux Performance Monitor API
458
459 NOTE: Object files are built at the place where configure is launched.
460 EOF
461   exit 0
462 }
463
464 quotes='""'
465 if test -t 1 && which tput >/dev/null 2>&1; then
466     ncolors=$(tput colors)
467     if test -n "$ncolors" && test $ncolors -ge 8; then
468         bold_color=$(tput bold)
469         warn_color=$(tput setaf 3)
470         error_color=$(tput setaf 1)
471         reset_color=$(tput sgr0)
472     fi
473     # 72 used instead of 80 since that's the default of pr
474     ncols=$(tput cols)
475 fi
476 : ${ncols:=72}
477
478 log(){
479     echo "$@" >> $logfile
480 }
481
482 log_file(){
483     log BEGIN $1
484     pr -n -t $1 >> $logfile
485     log END $1
486 }
487
488 warn(){
489     log "WARNING: $*"
490     WARNINGS="${WARNINGS}WARNING: $*\n"
491 }
492
493 die(){
494     log "$@"
495     echo "$error_color$bold_color$@$reset_color"
496     cat <<EOF
497
498 If you think configure made a mistake, make sure you are using the latest
499 version from Git.  If the latest version fails, report the problem to the
500 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
501 EOF
502     if disabled logging; then
503         cat <<EOF
504 Rerun configure with logging enabled (do not use --disable-logging), and
505 include the log this produces with your report.
506 EOF
507     else
508         cat <<EOF
509 Include the log file "$logfile" produced by configure as this will help
510 solve the problem.
511 EOF
512     fi
513     exit 1
514 }
515
516 # Avoid locale weirdness, besides we really just want to translate ASCII.
517 toupper(){
518     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
519 }
520
521 tolower(){
522     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
523 }
524
525 c_escape(){
526     echo "$*" | sed 's/["\\]/\\\0/g'
527 }
528
529 sh_quote(){
530     v=$(echo "$1" | sed "s/'/'\\\\''/g")
531     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
532     echo "$v"
533 }
534
535 cleanws(){
536     echo "$@" | sed 's/^ *//;s/[[:space:]][[:space:]]*/ /g;s/ *$//'
537 }
538
539 filter(){
540     pat=$1
541     shift
542     for v; do
543         eval "case $v in $pat) printf '%s ' $v ;; esac"
544     done
545 }
546
547 filter_out(){
548     pat=$1
549     shift
550     for v; do
551         eval "case $v in $pat) ;; *) printf '%s ' $v ;; esac"
552     done
553 }
554
555 map(){
556     m=$1
557     shift
558     for v; do eval $m; done
559 }
560
561 add_suffix(){
562     suffix=$1
563     shift
564     for v; do echo ${v}${suffix}; done
565 }
566
567 set_all(){
568     value=$1
569     shift
570     for var in $*; do
571         eval $var=$value
572     done
573 }
574
575 set_weak(){
576     value=$1
577     shift
578     for var; do
579         eval : \${$var:=$value}
580     done
581 }
582
583 sanitize_var_name(){
584     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
585 }
586
587 set_safe(){
588     var=$1
589     shift
590     eval $(sanitize_var_name "$var")='$*'
591 }
592
593 get_safe(){
594     eval echo \$$(sanitize_var_name "$1")
595 }
596
597 pushvar(){
598     for pvar in $*; do
599         eval level=\${${pvar}_level:=0}
600         eval ${pvar}_${level}="\$$pvar"
601         eval ${pvar}_level=$(($level+1))
602     done
603 }
604
605 popvar(){
606     for pvar in $*; do
607         eval level=\${${pvar}_level:-0}
608         test $level = 0 && continue
609         eval level=$(($level-1))
610         eval $pvar="\${${pvar}_${level}}"
611         eval ${pvar}_level=$level
612         eval unset ${pvar}_${level}
613     done
614 }
615
616 request(){
617     for var in $*; do
618         eval ${var}_requested=yes
619         eval $var=
620     done
621 }
622
623 enable(){
624     set_all yes $*
625 }
626
627 disable(){
628     set_all no $*
629 }
630
631 enable_weak(){
632     set_weak yes $*
633 }
634
635 disable_weak(){
636     set_weak no $*
637 }
638
639 enable_safe(){
640     for var; do
641         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
642     done
643 }
644
645 disable_safe(){
646     for var; do
647         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
648     done
649 }
650
651 do_enable_deep(){
652     for var; do
653         enabled $var && continue
654         eval sel="\$${var}_select"
655         eval sgs="\$${var}_suggest"
656         pushvar var sgs
657         enable_deep $sel
658         popvar sgs
659         enable_deep_weak $sgs
660         popvar var
661     done
662 }
663
664 enable_deep(){
665     do_enable_deep $*
666     enable $*
667 }
668
669 enable_deep_weak(){
670     for var; do
671         disabled $var && continue
672         pushvar var
673         do_enable_deep $var
674         popvar var
675         enable_weak $var
676     done
677 }
678
679 requested(){
680     test "${1#!}" = "$1" && op='=' || op=!=
681     eval test "x\$${1#!}_requested" $op "xyes"
682 }
683
684 enabled(){
685     test "${1#!}" = "$1" && op='=' || op=!=
686     eval test "x\$${1#!}" $op "xyes"
687 }
688
689 disabled(){
690     test "${1#!}" = "$1" && op='=' || op=!=
691     eval test "x\$${1#!}" $op "xno"
692 }
693
694 enabled_all(){
695     for opt; do
696         enabled $opt || return 1
697     done
698 }
699
700 disabled_all(){
701     for opt; do
702         disabled $opt || return 1
703     done
704 }
705
706 enabled_any(){
707     for opt; do
708         enabled $opt && return 0
709     done
710 }
711
712 disabled_any(){
713     for opt; do
714         disabled $opt && return 0
715     done
716     return 1
717 }
718
719 set_default(){
720     for opt; do
721         eval : \${$opt:=\$${opt}_default}
722     done
723 }
724
725 is_in(){
726     value=$1
727     shift
728     for var in $*; do
729         [ $var = $value ] && return 0
730     done
731     return 1
732 }
733
734 check_deps(){
735     for cfg; do
736         enabled ${cfg}_checking && die "Circular dependency for $cfg."
737         disabled ${cfg}_checking && continue
738         enable ${cfg}_checking
739
740         eval dep_all="\$${cfg}_deps"
741         eval dep_any="\$${cfg}_deps_any"
742         eval dep_con="\$${cfg}_conflict"
743         eval dep_sel="\$${cfg}_select"
744         eval dep_sgs="\$${cfg}_suggest"
745         eval dep_ifa="\$${cfg}_if"
746         eval dep_ifn="\$${cfg}_if_any"
747
748         pushvar cfg dep_all dep_any dep_con dep_sel dep_sgs dep_ifa dep_ifn
749         check_deps $dep_all $dep_any $dep_con $dep_sel $dep_sgs $dep_ifa $dep_ifn
750         popvar cfg dep_all dep_any dep_con dep_sel dep_sgs dep_ifa dep_ifn
751
752         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
753         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
754         enabled_all  $dep_all || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but not all dependencies are satisfied: $dep_all"; }
755         enabled_any  $dep_any || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but not any dependency is satisfied: $dep_any"; }
756         disabled_all $dep_con || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but some conflicting dependencies are unsatisfied: $dep_con"; }
757         disabled_any $dep_sel && { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but some selected dependency is unsatisfied: $dep_sel"; }
758
759         enabled $cfg && enable_deep_weak $dep_sel $dep_sgs
760
761         for dep in $dep_all $dep_any $dep_sel $dep_sgs; do
762             # filter out library deps, these do not belong in extralibs
763             is_in $dep $LIBRARY_LIST && continue
764             enabled $dep && eval append ${cfg}_extralibs ${dep}_extralibs
765         done
766
767         disable ${cfg}_checking
768     done
769 }
770
771 print_config(){
772     pfx=$1
773     files=$2
774     shift 2
775     map 'eval echo "$v \${$v:-no}"' "$@" |
776     awk "BEGIN { split(\"$files\", files) }
777         {
778             c = \"$pfx\" toupper(\$1);
779             v = \$2;
780             sub(/yes/, 1, v);
781             sub(/no/,  0, v);
782             for (f in files) {
783                 file = files[f];
784                 if (file ~ /\\.h\$/) {
785                     printf(\"#define %s %d\\n\", c, v) >>file;
786                 } else if (file ~ /\\.asm\$/) {
787                     printf(\"%%define %s %d\\n\", c, v) >>file;
788                 } else if (file ~ /\\.mak\$/) {
789                     n = -v ? \"\" : \"!\";
790                     printf(\"%s%s=yes\\n\", n, c) >>file;
791                 } else if (file ~ /\\.texi\$/) {
792                     pre = -v ? \"\" : \"@c \";
793                     yesno = \$2;
794                     c2 = tolower(c);
795                     gsub(/_/, \"-\", c2);
796                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
797                 }
798             }
799         }"
800 }
801
802 print_enabled(){
803     suf=$1
804     shift
805     for v; do
806         enabled $v && printf "%s\n" ${v%$suf}
807     done
808 }
809
810 append(){
811     var=$1
812     shift
813     eval "$var=\"\$$var $*\""
814 }
815
816 prepend(){
817     var=$1
818     shift
819     eval "$var=\"$* \$$var\""
820 }
821
822 unique(){
823     var=$1
824     uniq_list=""
825     for tok in $(eval echo \$$var); do
826         uniq_list="$(filter_out $tok $uniq_list) $tok"
827     done
828     eval "$var=\"${uniq_list}\""
829 }
830
831 resolve(){
832     var=$1
833     tmpvar=
834     for entry in $(eval echo \$$var); do
835         tmpvar="$tmpvar $(eval echo \$${entry})"
836     done
837     eval "$var=\"${tmpvar}\""
838 }
839
840 add_cppflags(){
841     append CPPFLAGS "$@"
842 }
843
844 add_cflags(){
845     append CFLAGS $($cflags_filter "$@")
846 }
847
848 add_cflags_headers(){
849     append CFLAGS_HEADERS $($cflags_filter "$@")
850 }
851
852 add_cxxflags(){
853     append CXXFLAGS $($cflags_filter "$@")
854 }
855
856 add_asflags(){
857     append ASFLAGS $($asflags_filter "$@")
858 }
859
860 add_objcflags(){
861     append OBJCFLAGS $($objcflags_filter "$@")
862 }
863
864 add_ldflags(){
865     append LDFLAGS $($ldflags_filter "$@")
866 }
867
868 add_ldexeflags(){
869     append LDEXEFLAGS $($ldflags_filter "$@")
870 }
871
872 add_ldlibflags(){
873     append LDLIBFLAGS $($ldflags_filter "$@")
874 }
875
876 add_stripflags(){
877     append ASMSTRIPFLAGS "$@"
878 }
879
880 add_extralibs(){
881     prepend extralibs $($ldflags_filter "$@")
882 }
883
884 add_host_cppflags(){
885     append host_cppflags "$@"
886 }
887
888 add_host_cflags(){
889     append host_cflags $($host_cflags_filter "$@")
890 }
891
892 add_host_ldflags(){
893     append host_ldflags $($host_ldflags_filter "$@")
894 }
895
896 add_compat(){
897     append compat_objs $1
898     shift
899     map 'add_cppflags -D$v' "$@"
900 }
901
902 check_cmd(){
903     log "$@"
904     "$@" >> $logfile 2>&1
905 }
906
907 check_stat(){
908     log check_stat "$@"
909     stat "$1" >> $logfile 2>&1
910 }
911
912 cc_o(){
913     eval printf '%s\\n' $CC_O
914 }
915
916 cc_e(){
917     eval printf '%s\\n' $CC_E
918 }
919
920 check_cc(){
921     log check_cc "$@"
922     cat > $TMPC
923     log_file $TMPC
924     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
925 }
926
927 check_cxx(){
928     log check_cxx "$@"
929     cat > $TMPCPP
930     log_file $TMPCPP
931     check_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
932 }
933
934 check_objcc(){
935     log check_objcc "$@"
936     cat > $TMPM
937     log_file $TMPM
938     check_cmd $objcc -Werror=missing-prototypes $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPM
939 }
940
941 check_cpp(){
942     log check_cpp "$@"
943     cat > $TMPC
944     log_file $TMPC
945     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
946 }
947
948 as_o(){
949     eval printf '%s\\n' $AS_O
950 }
951
952 check_as(){
953     log check_as "$@"
954     cat > $TMPS
955     log_file $TMPS
956     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
957 }
958
959 check_inline_asm(){
960     log check_inline_asm "$@"
961     name="$1"
962     code="$2"
963     shift 2
964     disable $name
965     check_cc "$@" <<EOF && enable $name
966 void foo(void){ __asm__ volatile($code); }
967 EOF
968 }
969
970 check_inline_asm_flags(){
971     log check_inline_asm_flags "$@"
972     name="$1"
973     code="$2"
974     flags=''
975     shift 2
976     while [ "$1" != "" ]; do
977       append flags $1
978       shift
979     done;
980     disable $name
981     cat > $TMPC <<EOF
982 void foo(void){ __asm__ volatile($code); }
983 EOF
984     log_file $TMPC
985     check_cmd $cc $CPPFLAGS $CFLAGS $flags "$@" $CC_C $(cc_o $TMPO) $TMPC &&
986     enable $name && add_cflags $flags && add_asflags $flags && add_ldflags $flags
987 }
988
989 check_insn(){
990     log check_insn "$@"
991     check_inline_asm ${1}_inline "\"$2\""
992     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
993 }
994
995 check_x86asm(){
996     log check_x86asm "$@"
997     echo "$1" > $TMPS
998     log_file $TMPS
999     shift 1
1000     check_cmd $x86asmexe $X86ASMFLAGS -Werror "$@" -o $TMPO $TMPS
1001 }
1002
1003 ld_o(){
1004     eval printf '%s\\n' $LD_O
1005 }
1006
1007 check_ld(){
1008     log check_ld "$@"
1009     type=$1
1010     shift 1
1011     flags=$(filter_out '-l*|*.so' $@)
1012     libs=$(filter '-l*|*.so' $@)
1013     check_$type $($cflags_filter $flags) || return
1014     flags=$($ldflags_filter $flags)
1015     libs=$($ldflags_filter $libs)
1016     check_cmd $ld $LDFLAGS $LDEXEFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
1017 }
1018
1019 print_include(){
1020     hdr=$1
1021     test "${hdr%.h}" = "${hdr}" &&
1022         echo "#include $hdr"    ||
1023         echo "#include <$hdr>"
1024 }
1025
1026 check_code(){
1027     log check_code "$@"
1028     check=$1
1029     headers=$2
1030     code=$3
1031     shift 3
1032     {
1033         for hdr in $headers; do
1034             print_include $hdr
1035         done
1036         echo "int main(void) { $code; return 0; }"
1037     } | check_$check "$@"
1038 }
1039
1040 check_cppflags(){
1041     log check_cppflags "$@"
1042     check_cpp "$@" <<EOF && append CPPFLAGS "$@"
1043 #include <stdlib.h>
1044 EOF
1045 }
1046
1047 test_cflags(){
1048     log test_cflags "$@"
1049     set -- $($cflags_filter "$@")
1050     check_cc "$@" <<EOF
1051 int x;
1052 EOF
1053 }
1054
1055 check_cflags(){
1056     log check_cflags "$@"
1057     test_cflags "$@" && add_cflags "$@"
1058 }
1059
1060 check_cxxflags(){
1061     log check_cxxflags "$@"
1062     set -- $($cflags_filter "$@")
1063     check_cxx "$@" <<EOF && append CXXFLAGS "$@"
1064 int x;
1065 EOF
1066 }
1067
1068 test_objcflags(){
1069     log test_objcflags "$@"
1070     set -- $($objcflags_filter "$@")
1071     check_objcc "$@" <<EOF
1072 int x;
1073 EOF
1074 }
1075
1076 check_objcflags(){
1077     log check_objcflags "$@"
1078     test_objcflags "$@" && add_objcflags "$@"
1079 }
1080
1081 test_ldflags(){
1082     log test_ldflags "$@"
1083     check_ld "cc" "$@" <<EOF
1084 int main(void){ return 0; }
1085 EOF
1086 }
1087
1088 check_ldflags(){
1089     log check_ldflags "$@"
1090     test_ldflags "$@" && add_ldflags "$@"
1091 }
1092
1093 test_stripflags(){
1094     log test_stripflags "$@"
1095     # call check_cc to get a fresh TMPO
1096     check_cc <<EOF
1097 int main(void) { return 0; }
1098 EOF
1099     check_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
1100 }
1101
1102 check_stripflags(){
1103     log check_stripflags "$@"
1104     test_stripflags "$@" && add_stripflags "$@"
1105 }
1106
1107 check_header(){
1108     log check_header "$@"
1109     header=$1
1110     shift
1111     disable_safe $header
1112     check_cpp "$@" <<EOF && enable_safe $header
1113 #include <$header>
1114 int x;
1115 EOF
1116 }
1117
1118 check_header_objcc(){
1119     log check_header_objcc "$@"
1120     rm -f -- "$TMPO"
1121     header=$1
1122     shift
1123     disable_safe $header
1124     {
1125        echo "#include <$header>"
1126        echo "int main(void) { return 0; }"
1127     } | check_objcc && check_stat "$TMPO" && enable_safe $header
1128 }
1129
1130 check_apple_framework(){
1131     log check_apple_framework "$@"
1132     framework="$1"
1133     name="$(tolower $framework)"
1134     header="${framework}/${framework}.h"
1135     disable $name
1136     check_header_objcc $header &&
1137         enable $name && eval ${name}_extralibs='"-framework $framework"'
1138 }
1139
1140 check_func(){
1141     log check_func "$@"
1142     func=$1
1143     shift
1144     disable $func
1145     check_ld "cc" "$@" <<EOF && enable $func
1146 extern int $func();
1147 int main(void){ $func(); }
1148 EOF
1149 }
1150
1151 check_complexfunc(){
1152     log check_complexfunc "$@"
1153     func=$1
1154     narg=$2
1155     shift 2
1156     test $narg = 2 && args="f, g" || args="f * I"
1157     disable $func
1158     check_ld "cc" "$@" <<EOF && enable $func
1159 #include <complex.h>
1160 #include <math.h>
1161 float foo(complex float f, complex float g) { return $func($args); }
1162 int main(void){ return (int) foo; }
1163 EOF
1164 }
1165
1166 check_mathfunc(){
1167     log check_mathfunc "$@"
1168     func=$1
1169     narg=$2
1170     shift 2
1171     test $narg = 2 && args="f, g" || args="f"
1172     disable $func
1173     check_ld "cc" "$@" <<EOF && enable $func
1174 #include <math.h>
1175 float foo(float f, float g) { return $func($args); }
1176 int main(void){ return (int) foo; }
1177 EOF
1178 }
1179
1180 check_func_headers(){
1181     log check_func_headers "$@"
1182     headers=$1
1183     funcs=$2
1184     shift 2
1185     {
1186         for hdr in $headers; do
1187             print_include $hdr
1188         done
1189         echo "#include <stdint.h>"
1190         for func in $funcs; do
1191             echo "long check_$func(void) { return (long) $func; }"
1192         done
1193         echo "int main(void) { int ret = 0;"
1194         # LTO could optimize out the test functions without this
1195         for func in $funcs; do
1196             echo " ret |= ((intptr_t)check_$func) & 0xFFFF;"
1197         done
1198         echo "return ret; }"
1199     } | check_ld "cc" "$@" && enable $funcs && enable_safe $headers
1200 }
1201
1202 check_class_headers_cpp(){
1203     log check_class_headers_cpp "$@"
1204     headers=$1
1205     classes=$2
1206     shift 2
1207     {
1208         for hdr in $headers; do
1209             echo "#include <$hdr>"
1210         done
1211         echo "int main(void) { "
1212         i=1
1213         for class in $classes; do
1214             echo "$class obj$i;"
1215             i=$(expr $i + 1)
1216         done
1217         echo "return 0; }"
1218     } | check_ld "cxx" "$@" && enable $funcs && enable_safe $headers
1219 }
1220
1221 check_cpp_condition(){
1222     log check_cpp_condition "$@"
1223     header=$1
1224     condition=$2
1225     shift 2
1226     check_cpp "$@" <<EOF
1227 #include <$header>
1228 #if !($condition)
1229 #error "unsatisfied condition: $condition"
1230 #endif
1231 EOF
1232 }
1233
1234 test_cflags_cc(){
1235     log test_cflags_cc "$@"
1236     flags=$1
1237     header=$2
1238     condition=$3
1239     shift 3
1240     set -- $($cflags_filter "$flags")
1241     check_cc "$@" <<EOF
1242 #include <$header>
1243 #if !($condition)
1244 #error "unsatisfied condition: $condition"
1245 #endif
1246 EOF
1247 }
1248
1249 check_lib(){
1250     log check_lib "$@"
1251     name="$1"
1252     headers="$2"
1253     funcs="$3"
1254     shift 3
1255     disable $name
1256     check_func_headers "$headers" "$funcs" "$@" &&
1257         enable $name && eval ${name}_extralibs="\$@"
1258 }
1259
1260 check_lib_cpp(){
1261     log check_lib_cpp "$@"
1262     name="$1"
1263     headers="$2"
1264     classes="$3"
1265     shift 3
1266     disable $name
1267     check_class_headers_cpp "$headers" "$classes" "$@" &&
1268         enable $name && eval ${name}_extralibs="\$@"
1269 }
1270
1271 check_pkg_config(){
1272     log check_pkg_config "$@"
1273     name="$1"
1274     pkg_version="$2"
1275     pkg="${2%% *}"
1276     headers="$3"
1277     funcs="$4"
1278     shift 4
1279     disable $name
1280     check_cmd $pkg_config --exists --print-errors $pkg_version || return
1281     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1282     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1283     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1284         enable $name &&
1285         set_safe "${name}_cflags"    $pkg_cflags &&
1286         set_safe "${name}_extralibs" $pkg_libs
1287 }
1288
1289 check_exec(){
1290     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1291 }
1292
1293 check_exec_crash(){
1294     log check_exec_crash "$@"
1295     code=$(cat)
1296
1297     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1298     # are safe but may not be available everywhere.  Thus we use
1299     # raise(SIGTERM) instead.  The check is run in a subshell so we
1300     # can redirect the "Terminated" message from the shell.  SIGBUS
1301     # is not defined by standard C so it is used conditionally.
1302
1303     (check_exec "$@") >> $logfile 2>&1 <<EOF
1304 #include <signal.h>
1305 static void sighandler(int sig){
1306     raise(SIGTERM);
1307 }
1308 int foo(void){
1309     $code
1310 }
1311 int (*func_ptr)(void) = foo;
1312 int main(void){
1313     signal(SIGILL, sighandler);
1314     signal(SIGFPE, sighandler);
1315     signal(SIGSEGV, sighandler);
1316 #ifdef SIGBUS
1317     signal(SIGBUS, sighandler);
1318 #endif
1319     return func_ptr();
1320 }
1321 EOF
1322 }
1323
1324 check_type(){
1325     log check_type "$@"
1326     headers=$1
1327     type=$2
1328     shift 2
1329     disable_safe "$type"
1330     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1331 }
1332
1333 check_struct(){
1334     log check_struct "$@"
1335     headers=$1
1336     struct=$2
1337     member=$3
1338     shift 3
1339     disable_safe "${struct}_${member}"
1340     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1341         enable_safe "${struct}_${member}"
1342 }
1343
1344 check_builtin(){
1345     log check_builtin "$@"
1346     name=$1
1347     headers=$2
1348     builtin=$3
1349     shift 3
1350     disable "$name"
1351     check_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1352 }
1353
1354 check_compile_assert(){
1355     log check_compile_assert "$@"
1356     name=$1
1357     headers=$2
1358     condition=$3
1359     shift 3
1360     disable "$name"
1361     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1362 }
1363
1364 require(){
1365     log require "$@"
1366     name_version="$1"
1367     name="${1%% *}"
1368     headers="$2"
1369     func="$3"
1370     shift 3
1371     check_lib $name "$headers" $func "$@" || die "ERROR: $name_version not found"
1372 }
1373
1374 require_cpp(){
1375     name="$1"
1376     headers="$2"
1377     classes="$3"
1378     shift 3
1379     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1380 }
1381
1382 require_header(){
1383     log require "$@"
1384     header="$1"
1385     shift
1386     check_header "$header" "$@" || die "ERROR: $header header not found"
1387 }
1388
1389 require_cpp_condition(){
1390     log require "$@"
1391     header="$1"
1392     condition="$2"
1393     shift 2
1394     check_cpp_condition "$header" "$condition" "$@" || die "ERROR: $condition not satisfied"
1395 }
1396
1397 use_pkg_config(){
1398     log use_pkg_config "$@"
1399     name="$1"
1400     check_pkg_config "$@" || return 1
1401     add_cflags    $(get_safe "${name}_cflags")
1402 }
1403
1404 require_pkg_config(){
1405     log require_pkg_config "$@"
1406     pkg_version="$2"
1407     use_pkg_config "$@" || die "ERROR: $pkg_version not found using pkg-config$pkg_config_fail_message"
1408 }
1409
1410 hostcc_e(){
1411     eval printf '%s\\n' $HOSTCC_E
1412 }
1413
1414 hostcc_o(){
1415     eval printf '%s\\n' $HOSTCC_O
1416 }
1417
1418 check_host_cc(){
1419     log check_host_cc "$@"
1420     cat > $TMPC
1421     log_file $TMPC
1422     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1423 }
1424
1425 check_host_cpp(){
1426     log check_host_cpp "$@"
1427     cat > $TMPC
1428     log_file $TMPC
1429     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1430 }
1431
1432 check_host_cppflags(){
1433     log check_host_cppflags "$@"
1434     check_host_cpp "$@" <<EOF && append host_cppflags "$@"
1435 #include <stdlib.h>
1436 EOF
1437 }
1438
1439 check_host_cflags(){
1440     log check_host_cflags "$@"
1441     set -- $($host_cflags_filter "$@")
1442     check_host_cc "$@" <<EOF && append host_cflags "$@"
1443 int x;
1444 EOF
1445 }
1446
1447 check_host_cpp_condition(){
1448     log check_host_cpp_condition "$@"
1449     header=$1
1450     condition=$2
1451     shift 2
1452     check_host_cpp "$@" <<EOF
1453 #include <$header>
1454 #if !($condition)
1455 #error "unsatisfied condition: $condition"
1456 #endif
1457 EOF
1458 }
1459
1460 cp_if_changed(){
1461     cmp -s "$1" "$2" && { test "$quiet" != "yes" && echo "$2 is unchanged"; } && return
1462     mkdir -p "$(dirname $2)"
1463     cp -f "$1" "$2"
1464 }
1465
1466 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1467 # system-dependent things.
1468
1469 AVCODEC_COMPONENTS="
1470     bsfs
1471     decoders
1472     encoders
1473     hwaccels
1474     parsers
1475 "
1476
1477 AVDEVICE_COMPONENTS="
1478     indevs
1479     outdevs
1480 "
1481
1482 AVFILTER_COMPONENTS="
1483     filters
1484 "
1485
1486 AVFORMAT_COMPONENTS="
1487     demuxers
1488     muxers
1489     protocols
1490 "
1491
1492 AVRESAMPLE_COMPONENTS=""
1493
1494 AVUTIL_COMPONENTS=""
1495
1496 COMPONENT_LIST="
1497     $AVCODEC_COMPONENTS
1498     $AVDEVICE_COMPONENTS
1499     $AVFILTER_COMPONENTS
1500     $AVFORMAT_COMPONENTS
1501     $AVRESAMPLE_COMPONENTS
1502     $AVUTIL_COMPONENTS
1503 "
1504
1505 EXAMPLE_LIST="
1506     avio_dir_cmd_example
1507     avio_reading_example
1508     decode_audio_example
1509     decode_video_example
1510     demuxing_decoding_example
1511     encode_audio_example
1512     encode_video_example
1513     extract_mvs_example
1514     filter_audio_example
1515     filtering_audio_example
1516     filtering_video_example
1517     http_multiclient_example
1518     hw_decode_example
1519     metadata_example
1520     muxing_example
1521     qsvdec_example
1522     remuxing_example
1523     resampling_audio_example
1524     scaling_video_example
1525     transcode_aac_example
1526     transcoding_example
1527 "
1528
1529 EXTERNAL_AUTODETECT_LIBRARY_LIST="
1530     alsa
1531     appkit
1532     avfoundation
1533     bzlib
1534     coreimage
1535     iconv
1536     libxcb
1537     libxcb_shm
1538     libxcb_shape
1539     libxcb_xfixes
1540     lzma
1541     schannel
1542     sdl2
1543     securetransport
1544     sndio
1545     xlib
1546     zlib
1547 "
1548
1549 EXTERNAL_LIBRARY_GPL_LIST="
1550     avisynth
1551     frei0r
1552     libcdio
1553     librubberband
1554     libvidstab
1555     libx264
1556     libx265
1557     libxavs
1558     libxvid
1559 "
1560
1561 EXTERNAL_LIBRARY_NONFREE_LIST="
1562     decklink
1563     libndi_newtek
1564     libfdk_aac
1565     openssl
1566 "
1567
1568 EXTERNAL_LIBRARY_VERSION3_LIST="
1569     gmp
1570     libopencore_amrnb
1571     libopencore_amrwb
1572     libvo_amrwbenc
1573     rkmpp
1574 "
1575
1576 EXTERNAL_LIBRARY_GPLV3_LIST="
1577     libsmbclient
1578 "
1579
1580 EXTERNAL_LIBRARY_LIST="
1581     $EXTERNAL_LIBRARY_GPL_LIST
1582     $EXTERNAL_LIBRARY_NONFREE_LIST
1583     $EXTERNAL_LIBRARY_VERSION3_LIST
1584     $EXTERNAL_LIBRARY_GPLV3_LIST
1585     chromaprint
1586     gcrypt
1587     gnutls
1588     jni
1589     ladspa
1590     libass
1591     libbluray
1592     libbs2b
1593     libcaca
1594     libcelt
1595     libdc1394
1596     libdrm
1597     libflite
1598     libfontconfig
1599     libfreetype
1600     libfribidi
1601     libgme
1602     libgsm
1603     libiec61883
1604     libilbc
1605     libjack
1606     libkvazaar
1607     libmodplug
1608     libmp3lame
1609     libmysofa
1610     libopencv
1611     libopenh264
1612     libopenjpeg
1613     libopenmpt
1614     libopus
1615     libpulse
1616     librsvg
1617     librtmp
1618     libshine
1619     libsmbclient
1620     libsnappy
1621     libsoxr
1622     libspeex
1623     libssh
1624     libtesseract
1625     libtheora
1626     libtwolame
1627     libv4l2
1628     libvmaf
1629     libvorbis
1630     libvpx
1631     libwavpack
1632     libwebp
1633     libxml2
1634     libzimg
1635     libzmq
1636     libzvbi
1637     mediacodec
1638     openal
1639     opencl
1640     opengl
1641 "
1642
1643 HWACCEL_AUTODETECT_LIBRARY_LIST="
1644     audiotoolbox
1645     crystalhd
1646     cuda
1647     cuvid
1648     d3d11va
1649     dxva2
1650     nvenc
1651     vaapi
1652     vdpau
1653     videotoolbox
1654     v4l2_m2m
1655     xvmc
1656 "
1657
1658 # catchall list of things that require external libs to link
1659 EXTRALIBS_LIST="
1660     cpu_init
1661     cws2fws
1662 "
1663
1664 HWACCEL_LIBRARY_NONFREE_LIST="
1665     cuda_sdk
1666     libnpp
1667 "
1668
1669 HWACCEL_LIBRARY_LIST="
1670     $HWACCEL_LIBRARY_NONFREE_LIST
1671     libmfx
1672     mmal
1673     omx
1674 "
1675
1676 DOCUMENT_LIST="
1677     doc
1678     htmlpages
1679     manpages
1680     podpages
1681     txtpages
1682 "
1683
1684 FEATURE_LIST="
1685     ftrapv
1686     gray
1687     hardcoded_tables
1688     omx_rpi
1689     runtime_cpudetect
1690     safe_bitstream_reader
1691     shared
1692     small
1693     static
1694     swscale_alpha
1695 "
1696
1697 LIBRARY_LIST="
1698     avcodec
1699     avdevice
1700     avfilter
1701     avformat
1702     avresample
1703     avutil
1704     postproc
1705     swresample
1706     swscale
1707 "
1708
1709 LICENSE_LIST="
1710     gpl
1711     nonfree
1712     version3
1713 "
1714
1715 PROGRAM_LIST="
1716     ffplay
1717     ffprobe
1718     ffserver
1719     ffmpeg
1720 "
1721
1722 SUBSYSTEM_LIST="
1723     dct
1724     dwt
1725     error_resilience
1726     faan
1727     fast_unaligned
1728     fft
1729     lsp
1730     lzo
1731     mdct
1732     pixelutils
1733     network
1734     rdft
1735 "
1736
1737 # COMPONENT_LIST needs to come last to ensure correct dependency checking
1738 CONFIG_LIST="
1739     $DOCUMENT_LIST
1740     $EXAMPLE_LIST
1741     $EXTERNAL_LIBRARY_LIST
1742     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1743     $HWACCEL_LIBRARY_LIST
1744     $HWACCEL_AUTODETECT_LIBRARY_LIST
1745     $FEATURE_LIST
1746     $LICENSE_LIST
1747     $LIBRARY_LIST
1748     $PROGRAM_LIST
1749     $SUBSYSTEM_LIST
1750     autodetect
1751     fontconfig
1752     linux_perf
1753     memory_poisoning
1754     neon_clobber_test
1755     ossfuzz
1756     pic
1757     thumb
1758     valgrind_backtrace
1759     xmm_clobber_test
1760     $COMPONENT_LIST
1761 "
1762
1763 THREADS_LIST="
1764     pthreads
1765     os2threads
1766     w32threads
1767 "
1768
1769 ATOMICS_LIST="
1770     atomics_gcc
1771     atomics_suncc
1772     atomics_win32
1773 "
1774
1775 AUTODETECT_LIBS="
1776     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1777     $HWACCEL_AUTODETECT_LIBRARY_LIST
1778     $THREADS_LIST
1779 "
1780
1781 ARCH_LIST="
1782     aarch64
1783     alpha
1784     arm
1785     avr32
1786     avr32_ap
1787     avr32_uc
1788     bfin
1789     ia64
1790     m68k
1791     mips
1792     mips64
1793     parisc
1794     ppc
1795     ppc64
1796     s390
1797     sh4
1798     sparc
1799     sparc64
1800     tilegx
1801     tilepro
1802     tomi
1803     x86
1804     x86_32
1805     x86_64
1806 "
1807
1808 ARCH_EXT_LIST_ARM="
1809     armv5te
1810     armv6
1811     armv6t2
1812     armv8
1813     neon
1814     vfp
1815     vfpv3
1816     setend
1817 "
1818
1819 ARCH_EXT_LIST_MIPS="
1820     mipsfpu
1821     mips32r2
1822     mips32r5
1823     mips64r2
1824     mips32r6
1825     mips64r6
1826     mipsdsp
1827     mipsdspr2
1828     msa
1829 "
1830
1831 ARCH_EXT_LIST_LOONGSON="
1832     loongson2
1833     loongson3
1834     mmi
1835 "
1836
1837 ARCH_EXT_LIST_X86_SIMD="
1838     aesni
1839     amd3dnow
1840     amd3dnowext
1841     avx
1842     avx2
1843     fma3
1844     fma4
1845     mmx
1846     mmxext
1847     sse
1848     sse2
1849     sse3
1850     sse4
1851     sse42
1852     ssse3
1853     xop
1854 "
1855
1856 ARCH_EXT_LIST_PPC="
1857     altivec
1858     dcbzl
1859     ldbrx
1860     power8
1861     ppc4xx
1862     vsx
1863 "
1864
1865 ARCH_EXT_LIST_X86="
1866     $ARCH_EXT_LIST_X86_SIMD
1867     cpunop
1868     i686
1869 "
1870
1871 ARCH_EXT_LIST="
1872     $ARCH_EXT_LIST_ARM
1873     $ARCH_EXT_LIST_PPC
1874     $ARCH_EXT_LIST_X86
1875     $ARCH_EXT_LIST_MIPS
1876     $ARCH_EXT_LIST_LOONGSON
1877 "
1878
1879 ARCH_FEATURES="
1880     aligned_stack
1881     fast_64bit
1882     fast_clz
1883     fast_cmov
1884     local_aligned_8
1885     local_aligned_16
1886     local_aligned_32
1887     simd_align_16
1888     simd_align_32
1889 "
1890
1891 BUILTIN_LIST="
1892     atomic_cas_ptr
1893     machine_rw_barrier
1894     MemoryBarrier
1895     mm_empty
1896     rdtsc
1897     sarestart
1898     sem_timedwait
1899     sync_val_compare_and_swap
1900 "
1901 HAVE_LIST_CMDLINE="
1902     inline_asm
1903     symver
1904     x86asm
1905 "
1906
1907 HAVE_LIST_PUB="
1908     bigendian
1909     fast_unaligned
1910 "
1911
1912 HEADERS_LIST="
1913     altivec_h
1914     arpa_inet_h
1915     asm_types_h
1916     cdio_paranoia_h
1917     cdio_paranoia_paranoia_h
1918     cuda_h
1919     d3d11_h
1920     dispatch_dispatch_h
1921     dev_bktr_ioctl_bt848_h
1922     dev_bktr_ioctl_meteor_h
1923     dev_ic_bt8xx_h
1924     dev_video_bktr_ioctl_bt848_h
1925     dev_video_meteor_ioctl_meteor_h
1926     direct_h
1927     dirent_h
1928     dlfcn_h
1929     dxgidebug_h
1930     dxva_h
1931     ES2_gl_h
1932     gsm_h
1933     io_h
1934     mach_mach_time_h
1935     machine_ioctl_bt848_h
1936     machine_ioctl_meteor_h
1937     malloc_h
1938     opencv2_core_core_c_h
1939     OpenGL_gl3_h
1940     poll_h
1941     soundcard_h
1942     stdatomic_h
1943     sys_mman_h
1944     sys_param_h
1945     sys_resource_h
1946     sys_select_h
1947     sys_soundcard_h
1948     sys_time_h
1949     sys_un_h
1950     sys_videoio_h
1951     termios_h
1952     udplite_h
1953     unistd_h
1954     valgrind_valgrind_h
1955     windows_h
1956     winsock2_h
1957 "
1958
1959 INTRINSICS_LIST="
1960     intrinsics_neon
1961 "
1962
1963 COMPLEX_FUNCS="
1964     cabs
1965     cexp
1966 "
1967
1968 MATH_FUNCS="
1969     atanf
1970     atan2f
1971     cbrt
1972     cbrtf
1973     copysign
1974     cosf
1975     erf
1976     exp2
1977     exp2f
1978     expf
1979     hypot
1980     isfinite
1981     isinf
1982     isnan
1983     ldexpf
1984     llrint
1985     llrintf
1986     log2
1987     log2f
1988     log10f
1989     lrint
1990     lrintf
1991     powf
1992     rint
1993     round
1994     roundf
1995     sinf
1996     trunc
1997     truncf
1998 "
1999
2000 SYSTEM_FUNCS="
2001     access
2002     aligned_malloc
2003     arc4random
2004     clock_gettime
2005     closesocket
2006     CommandLineToArgvW
2007     CoTaskMemFree
2008     CryptGenRandom
2009     fcntl
2010     flt_lim
2011     fork
2012     getaddrinfo
2013     gethrtime
2014     getopt
2015     GetProcessAffinityMask
2016     GetProcessMemoryInfo
2017     GetProcessTimes
2018     getrusage
2019     GetSystemTimeAsFileTime
2020     gettimeofday
2021     glob
2022     glXGetProcAddress
2023     gmtime_r
2024     inet_aton
2025     isatty
2026     kbhit
2027     LoadLibrary
2028     localtime_r
2029     lstat
2030     lzo1x_999_compress
2031     mach_absolute_time
2032     MapViewOfFile
2033     memalign
2034     mkstemp
2035     mmap
2036     mprotect
2037     nanosleep
2038     PeekNamedPipe
2039     posix_memalign
2040     pthread_cancel
2041     sched_getaffinity
2042     SetConsoleTextAttribute
2043     SetConsoleCtrlHandler
2044     setmode
2045     setrlimit
2046     Sleep
2047     strerror_r
2048     sysconf
2049     sysctl
2050     usleep
2051     UTGetOSTypeFromString
2052     VirtualAlloc
2053     wglGetProcAddress
2054 "
2055
2056 TOOLCHAIN_FEATURES="
2057     as_dn_directive
2058     as_fpu_directive
2059     as_func
2060     as_object_arch
2061     asm_mod_q
2062     attribute_may_alias
2063     attribute_packed
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_FUNCS
2115     $THREADS_LIST
2116     $TOOLCHAIN_FEATURES
2117     $TYPES_LIST
2118     atomics_native
2119     dos_paths
2120     libc_msvcrt
2121     makeinfo
2122     makeinfo_html
2123     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
2124     perl
2125     pod2man
2126     section_data_rel_ro
2127     texi2html
2128     threads
2129     uwp
2130     vaapi_drm
2131     vaapi_x11
2132     vdpau_x11
2133     winrt
2134 "
2135
2136 # options emitted with CONFIG_ prefix but not available on the command line
2137 CONFIG_EXTRA="
2138     aandcttables
2139     ac3dsp
2140     audio_frame_queue
2141     audiodsp
2142     blockdsp
2143     bswapdsp
2144     cabac
2145     cbs
2146     cbs_h264
2147     cbs_h265
2148     cbs_mpeg2
2149     dirac_parse
2150     dvprofile
2151     exif
2152     faandct
2153     faanidct
2154     fdctdsp
2155     flacdsp
2156     fmtconvert
2157     frame_thread_encoder
2158     g722dsp
2159     golomb
2160     gplv3
2161     h263dsp
2162     h264chroma
2163     h264dsp
2164     h264parse
2165     h264pred
2166     h264qpel
2167     hevcparse
2168     hpeldsp
2169     huffman
2170     huffyuvdsp
2171     huffyuvencdsp
2172     idctdsp
2173     iirfilter
2174     mdct15
2175     intrax8
2176     iso_media
2177     ividsp
2178     jpegtables
2179     lgplv3
2180     libx262
2181     llauddsp
2182     llviddsp
2183     llvidencdsp
2184     lpc
2185     lzf
2186     me_cmp
2187     mpeg_er
2188     mpegaudio
2189     mpegaudiodsp
2190     mpegaudioheader
2191     mpegvideo
2192     mpegvideoenc
2193     mss34dsp
2194     pixblockdsp
2195     qpeldsp
2196     qsv
2197     qsvdec
2198     qsvenc
2199     rangecoder
2200     riffdec
2201     riffenc
2202     rtpdec
2203     rtpenc_chain
2204     rv34dsp
2205     sinewin
2206     snappy
2207     srtp
2208     startcode
2209     texturedsp
2210     texturedspenc
2211     tpeldsp
2212     vaapi_1
2213     vaapi_encode
2214     vc1dsp
2215     videodsp
2216     vp3dsp
2217     vp56dsp
2218     vp8dsp
2219     wma_freqs
2220     wmv2dsp
2221 "
2222
2223 CMDLINE_SELECT="
2224     $ARCH_EXT_LIST
2225     $CONFIG_LIST
2226     $HAVE_LIST_CMDLINE
2227     $THREADS_LIST
2228     asm
2229     cross_compile
2230     debug
2231     extra_warnings
2232     logging
2233     lto
2234     optimizations
2235     rpath
2236     stripping
2237 "
2238
2239 PATHS_LIST="
2240     bindir
2241     datadir
2242     docdir
2243     incdir
2244     libdir
2245     mandir
2246     pkgconfigdir
2247     prefix
2248     shlibdir
2249     install_name_dir
2250 "
2251
2252 CMDLINE_SET="
2253     $PATHS_LIST
2254     ar
2255     arch
2256     as
2257     assert_level
2258     build_suffix
2259     cc
2260     objcc
2261     cpu
2262     cross_prefix
2263     custom_allocator
2264     cxx
2265     dep_cc
2266     doxygen
2267     env
2268     extra_version
2269     gas
2270     host_cc
2271     host_cflags
2272     host_extralibs
2273     host_ld
2274     host_ldflags
2275     host_os
2276     ignore_tests
2277     install
2278     ld
2279     ln_s
2280     logfile
2281     malloc_prefix
2282     nm
2283     optflags
2284     nvccflags
2285     pkg_config
2286     pkg_config_flags
2287     progs_suffix
2288     random_seed
2289     ranlib
2290     samples
2291     strip
2292     sws_max_filter_size
2293     sysinclude
2294     sysroot
2295     target_exec
2296     target_os
2297     target_path
2298     target_samples
2299     tempprefix
2300     toolchain
2301     valgrind
2302     x86asmexe
2303 "
2304
2305 CMDLINE_APPEND="
2306     extra_cflags
2307     extra_cxxflags
2308     extra_objcflags
2309     host_cppflags
2310 "
2311
2312 # code dependency declarations
2313
2314 # architecture extensions
2315
2316 armv5te_deps="arm"
2317 armv6_deps="arm"
2318 armv6t2_deps="arm"
2319 armv8_deps="aarch64"
2320 neon_deps_any="aarch64 arm"
2321 intrinsics_neon_deps="neon"
2322 vfp_deps_any="aarch64 arm"
2323 vfpv3_deps="vfp"
2324 setend_deps="arm"
2325
2326 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2327
2328 loongson2_deps="mips"
2329 loongson3_deps="mips"
2330 mipsfpu_deps="mips"
2331 mipsdsp_deps="mips"
2332 mipsdspr2_deps="mips"
2333 mips32r2_deps="mips"
2334 mips32r5_deps="mips"
2335 mips32r6_deps="mips"
2336 mips64r2_deps="mips"
2337 mips64r6_deps="mips"
2338 msa_deps="mipsfpu"
2339 mmi_deps="mips"
2340
2341 altivec_deps="ppc"
2342 dcbzl_deps="ppc"
2343 ldbrx_deps="ppc"
2344 ppc4xx_deps="ppc"
2345 vsx_deps="altivec"
2346 power8_deps="vsx"
2347
2348 cpunop_deps="i686"
2349 x86_64_select="i686"
2350 x86_64_suggest="fast_cmov"
2351
2352 amd3dnow_deps="mmx"
2353 amd3dnowext_deps="amd3dnow"
2354 i686_deps="x86"
2355 mmx_deps="x86"
2356 mmxext_deps="mmx"
2357 sse_deps="mmxext"
2358 sse2_deps="sse"
2359 sse3_deps="sse2"
2360 ssse3_deps="sse3"
2361 sse4_deps="ssse3"
2362 sse42_deps="sse4"
2363 aesni_deps="sse42"
2364 avx_deps="sse42"
2365 xop_deps="avx"
2366 fma3_deps="avx"
2367 fma4_deps="avx"
2368 avx2_deps="avx"
2369
2370 mmx_external_deps="x86asm"
2371 mmx_inline_deps="inline_asm"
2372 mmx_suggest="mmx_external mmx_inline"
2373
2374 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2375     eval dep=\$${ext}_deps
2376     eval ${ext}_external_deps='"${dep}_external"'
2377     eval ${ext}_inline_deps='"${dep}_inline"'
2378     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2379 done
2380
2381 aligned_stack_if_any="aarch64 ppc x86"
2382 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2383 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2384 fast_unaligned_if_any="aarch64 ppc x86"
2385 simd_align_16_if_any="altivec neon sse"
2386 simd_align_32_if_any="avx"
2387
2388 # system capabilities
2389 symver_if_any="symver_asm_label symver_gnu_asm"
2390 valgrind_backtrace_conflict="optimizations"
2391 valgrind_backtrace_deps="valgrind_valgrind_h"
2392
2393 # threading support
2394 atomics_gcc_if="sync_val_compare_and_swap"
2395 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2396 atomics_win32_if="MemoryBarrier"
2397 atomics_native_if_any="$ATOMICS_LIST"
2398 w32threads_deps="atomics_native"
2399 threads_if_any="$THREADS_LIST"
2400
2401 # subsystems
2402 cbs_h264_select="cbs golomb"
2403 cbs_h265_select="cbs golomb"
2404 cbs_mpeg2_select="cbs"
2405 dct_select="rdft"
2406 dirac_parse_select="golomb"
2407 error_resilience_select="me_cmp"
2408 faandct_deps="faan fdctdsp"
2409 faanidct_deps="faan idctdsp"
2410 h264dsp_select="startcode"
2411 hevcparse_select="golomb"
2412 frame_thread_encoder_deps="encoders threads"
2413 intrax8_select="blockdsp idctdsp"
2414 mdct_select="fft"
2415 mdct15_select="fft"
2416 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2417 mpeg_er_select="error_resilience"
2418 mpegaudio_select="mpegaudiodsp mpegaudioheader"
2419 mpegaudiodsp_select="dct"
2420 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2421 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
2422 vc1dsp_select="h264chroma qpeldsp startcode"
2423 rdft_select="fft"
2424
2425 # decoders / encoders
2426 aac_decoder_select="mdct15 mdct sinewin"
2427 aac_fixed_decoder_select="mdct sinewin"
2428 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2429 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2430 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2431 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2432 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2433 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2434 adpcm_g722_decoder_select="g722dsp"
2435 adpcm_g722_encoder_select="g722dsp"
2436 aic_decoder_select="golomb idctdsp"
2437 alac_encoder_select="lpc"
2438 als_decoder_select="bswapdsp"
2439 amrnb_decoder_select="lsp"
2440 amrwb_decoder_select="lsp"
2441 amv_decoder_select="sp5x_decoder exif"
2442 amv_encoder_select="aandcttables jpegtables mpegvideoenc"
2443 ape_decoder_select="bswapdsp llauddsp"
2444 apng_decoder_select="zlib"
2445 apng_encoder_select="llvidencdsp zlib"
2446 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2447 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2448 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2449 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2450 atrac1_decoder_select="mdct sinewin"
2451 atrac3_decoder_select="mdct"
2452 atrac3p_decoder_select="mdct sinewin"
2453 avrn_decoder_select="exif jpegtables"
2454 bink_decoder_select="blockdsp hpeldsp"
2455 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2456 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2457 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2458 clearvideo_decoder_select="idctdsp"
2459 cllc_decoder_select="bswapdsp"
2460 comfortnoise_encoder_select="lpc"
2461 cook_decoder_select="audiodsp mdct sinewin"
2462 cscd_decoder_select="lzo"
2463 cscd_decoder_suggest="zlib"
2464 dca_decoder_select="mdct"
2465 dds_decoder_select="texturedsp"
2466 dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
2467 dnxhd_decoder_select="blockdsp idctdsp"
2468 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2469 dolby_e_decoder_select="mdct"
2470 dvvideo_decoder_select="dvprofile idctdsp"
2471 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2472 dxa_decoder_select="zlib"
2473 dxv_decoder_select="lzf texturedsp"
2474 eac3_decoder_select="ac3_decoder"
2475 eac3_encoder_select="ac3_encoder"
2476 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2477 eatgq_decoder_select="aandcttables"
2478 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2479 exr_decoder_select="zlib"
2480 ffv1_decoder_select="rangecoder"
2481 ffv1_encoder_select="rangecoder"
2482 ffvhuff_decoder_select="huffyuv_decoder"
2483 ffvhuff_encoder_select="huffyuv_encoder"
2484 fic_decoder_select="golomb"
2485 flac_decoder_select="flacdsp"
2486 flac_encoder_select="bswapdsp flacdsp lpc"
2487 flashsv2_decoder_select="zlib"
2488 flashsv2_encoder_select="zlib"
2489 flashsv_decoder_select="zlib"
2490 flashsv_encoder_select="zlib"
2491 flv_decoder_select="h263_decoder"
2492 flv_encoder_select="h263_encoder"
2493 fourxm_decoder_select="blockdsp bswapdsp"
2494 fraps_decoder_select="bswapdsp huffman"
2495 g2m_decoder_select="blockdsp idctdsp jpegtables zlib"
2496 g729_decoder_select="audiodsp"
2497 h261_decoder_select="mpegvideo"
2498 h261_encoder_select="aandcttables mpegvideoenc"
2499 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2500 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2501 h263i_decoder_select="h263_decoder"
2502 h263p_decoder_select="h263_decoder"
2503 h263p_encoder_select="h263_encoder"
2504 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
2505 h264_decoder_suggest="error_resilience"
2506 hap_decoder_select="snappy texturedsp"
2507 hap_encoder_deps="libsnappy"
2508 hap_encoder_select="texturedspenc"
2509 hevc_decoder_select="bswapdsp cabac golomb hevcparse videodsp"
2510 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2511 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llvidencdsp"
2512 iac_decoder_select="imc_decoder"
2513 imc_decoder_select="bswapdsp fft mdct sinewin"
2514 indeo3_decoder_select="hpeldsp"
2515 indeo4_decoder_select="ividsp"
2516 indeo5_decoder_select="ividsp"
2517 interplay_video_decoder_select="hpeldsp"
2518 jpegls_decoder_select="mjpeg_decoder"
2519 jv_decoder_select="blockdsp"
2520 lagarith_decoder_select="llviddsp"
2521 ljpeg_encoder_select="aandcttables idctdsp jpegtables mpegvideoenc"
2522 magicyuv_decoder_select="llviddsp"
2523 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2524 metasound_decoder_select="lsp mdct sinewin"
2525 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2526 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2527 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2528 mjpegb_decoder_select="mjpeg_decoder"
2529 mlp_decoder_select="mlp_parser"
2530 mlp_encoder_select="lpc"
2531 motionpixels_decoder_select="bswapdsp"
2532 mp1_decoder_select="mpegaudio"
2533 mp1float_decoder_select="mpegaudio"
2534 mp2_decoder_select="mpegaudio"
2535 mp2float_decoder_select="mpegaudio"
2536 mp3_decoder_select="mpegaudio"
2537 mp3adu_decoder_select="mpegaudio"
2538 mp3adufloat_decoder_select="mpegaudio"
2539 mp3float_decoder_select="mpegaudio"
2540 mp3on4_decoder_select="mpegaudio"
2541 mp3on4float_decoder_select="mpegaudio"
2542 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2543 mpc8_decoder_select="mpegaudiodsp"
2544 mpegvideo_decoder_select="mpegvideo"
2545 mpeg1video_decoder_select="mpegvideo"
2546 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2547 mpeg2video_decoder_select="mpegvideo"
2548 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2549 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2550 mpeg4_encoder_select="h263_encoder"
2551 msa1_decoder_select="mss34dsp"
2552 mscc_decoder_select="zlib"
2553 msmpeg4v1_decoder_select="h263_decoder"
2554 msmpeg4v2_decoder_select="h263_decoder"
2555 msmpeg4v2_encoder_select="h263_encoder"
2556 msmpeg4v3_decoder_select="h263_decoder"
2557 msmpeg4v3_encoder_select="h263_encoder"
2558 mss2_decoder_select="mpegvideo qpeldsp vc1_decoder"
2559 mts2_decoder_select="mss34dsp"
2560 mxpeg_decoder_select="mjpeg_decoder"
2561 nellymoser_decoder_select="mdct sinewin"
2562 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2563 nuv_decoder_select="idctdsp lzo"
2564 on2avc_decoder_select="mdct"
2565 opus_decoder_deps="swresample"
2566 opus_decoder_select="mdct15"
2567 opus_encoder_select="audio_frame_queue mdct15"
2568 png_decoder_select="zlib"
2569 png_encoder_select="llvidencdsp zlib"
2570 prores_decoder_select="blockdsp idctdsp"
2571 prores_encoder_select="fdctdsp"
2572 qcelp_decoder_select="lsp"
2573 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2574 ra_144_decoder_select="audiodsp"
2575 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2576 ralf_decoder_select="golomb"
2577 rawvideo_decoder_select="bswapdsp"
2578 rscc_decoder_select="zlib"
2579 rtjpeg_decoder_select="me_cmp"
2580 rv10_decoder_select="h263_decoder"
2581 rv10_encoder_select="h263_encoder"
2582 rv20_decoder_select="h263_decoder"
2583 rv20_encoder_select="h263_encoder"
2584 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2585 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2586 screenpresso_decoder_select="zlib"
2587 shorten_decoder_select="bswapdsp"
2588 sipr_decoder_select="lsp"
2589 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2590 snow_encoder_select="aandcttables dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2591 sonic_decoder_select="golomb rangecoder"
2592 sonic_encoder_select="golomb rangecoder"
2593 sonic_ls_encoder_select="golomb rangecoder"
2594 sp5x_decoder_select="mjpeg_decoder"
2595 srgc_decoder_select="zlib"
2596 svq1_decoder_select="hpeldsp"
2597 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2598 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2599 svq3_decoder_suggest="zlib"
2600 tak_decoder_select="audiodsp"
2601 tdsc_decoder_select="zlib mjpeg_decoder"
2602 theora_decoder_select="vp3_decoder"
2603 thp_decoder_select="mjpeg_decoder"
2604 tiff_decoder_suggest="zlib lzma"
2605 tiff_encoder_suggest="zlib"
2606 truehd_decoder_select="mlp_parser"
2607 truehd_encoder_select="lpc"
2608 truemotion2_decoder_select="bswapdsp"
2609 truespeech_decoder_select="bswapdsp"
2610 tscc_decoder_select="zlib"
2611 twinvq_decoder_select="mdct lsp sinewin"
2612 txd_decoder_select="texturedsp"
2613 utvideo_decoder_select="bswapdsp llviddsp"
2614 utvideo_encoder_select="bswapdsp huffman llvidencdsp"
2615 vble_decoder_select="llviddsp"
2616 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 mpegvideo vc1dsp"
2617 vc1_qsv_decoder_deps="libmfx"
2618 vc1_qsv_decoder_select="qsvdec vc1_qsv_hwaccel vc1_parser"
2619 vc1image_decoder_select="vc1_decoder"
2620 vorbis_decoder_select="mdct"
2621 vorbis_encoder_select="mdct"
2622 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2623 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2624 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2625 vp6a_decoder_select="vp6_decoder"
2626 vp6f_decoder_select="vp6_decoder"
2627 vp7_decoder_select="h264pred videodsp vp8dsp"
2628 vp8_decoder_select="h264pred videodsp vp8dsp"
2629 vp9_decoder_select="videodsp vp9_parser"
2630 webp_decoder_select="vp8_decoder exif"
2631 wmalossless_decoder_select="llauddsp"
2632 wmapro_decoder_select="mdct sinewin wma_freqs"
2633 wmav1_decoder_select="mdct sinewin wma_freqs"
2634 wmav1_encoder_select="mdct sinewin wma_freqs"
2635 wmav2_decoder_select="mdct sinewin wma_freqs"
2636 wmav2_encoder_select="mdct sinewin wma_freqs"
2637 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2638 wmv1_decoder_select="h263_decoder"
2639 wmv1_encoder_select="h263_encoder"
2640 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2641 wmv2_encoder_select="h263_encoder wmv2dsp"
2642 wmv3_decoder_select="vc1_decoder"
2643 wmv3image_decoder_select="wmv3_decoder"
2644 xma1_decoder_select="wmapro_decoder"
2645 xma2_decoder_select="wmapro_decoder"
2646 zerocodec_decoder_select="zlib"
2647 zlib_decoder_select="zlib"
2648 zlib_encoder_select="zlib"
2649 zmbv_decoder_select="zlib"
2650 zmbv_encoder_select="zlib"
2651
2652 # hardware accelerators
2653 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2654 cuda_deps_any="libdl LoadLibrary"
2655 cuvid_deps="cuda"
2656 d3d11va_deps="d3d11_h dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2657 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode ole32 user32"
2658 videotoolbox_hwaccel_deps="videotoolbox pthreads"
2659 videotoolbox_hwaccel_extralibs="-framework QuartzCore"
2660 xvmc_deps="X11_extensions_XvMClib_h"
2661
2662 h263_vaapi_hwaccel_deps="vaapi"
2663 h263_vaapi_hwaccel_select="h263_decoder"
2664 h263_videotoolbox_hwaccel_deps="videotoolbox"
2665 h263_videotoolbox_hwaccel_select="h263_decoder"
2666 h264_cuvid_hwaccel_deps="cuda cuvid"
2667 h264_cuvid_hwaccel_select="h264_cuvid_decoder"
2668 h264_d3d11va_hwaccel_deps="d3d11va"
2669 h264_d3d11va_hwaccel_select="h264_decoder"
2670 h264_d3d11va2_hwaccel_deps="d3d11va"
2671 h264_d3d11va2_hwaccel_select="h264_decoder"
2672 h264_dxva2_hwaccel_deps="dxva2"
2673 h264_dxva2_hwaccel_select="h264_decoder"
2674 h264_mediacodec_hwaccel_deps="mediacodec"
2675 h264_mmal_hwaccel_deps="mmal"
2676 h264_qsv_hwaccel_deps="libmfx"
2677 h264_vaapi_hwaccel_deps="vaapi"
2678 h264_vaapi_hwaccel_select="h264_decoder"
2679 h264_vdpau_hwaccel_deps="vdpau"
2680 h264_vdpau_hwaccel_select="h264_decoder"
2681 h264_videotoolbox_hwaccel_deps="videotoolbox"
2682 h264_videotoolbox_hwaccel_select="h264_decoder"
2683 hevc_cuvid_hwaccel_deps="cuda cuvid"
2684 hevc_cuvid_hwaccel_select="hevc_cuvid_decoder"
2685 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2686 hevc_d3d11va_hwaccel_select="hevc_decoder"
2687 hevc_mediacodec_hwaccel_deps="mediacodec"
2688 hevc_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2689 hevc_d3d11va2_hwaccel_select="hevc_decoder"
2690 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2691 hevc_dxva2_hwaccel_select="hevc_decoder"
2692 hevc_qsv_hwaccel_deps="libmfx"
2693 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2694 hevc_vaapi_hwaccel_select="hevc_decoder"
2695 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2696 hevc_vdpau_hwaccel_select="hevc_decoder"
2697 hevc_videotoolbox_hwaccel_deps="videotoolbox"
2698 hevc_videotoolbox_hwaccel_select="hevc_decoder"
2699 mjpeg_cuvid_hwaccel_deps="cuda cuvid"
2700 mjpeg_cuvid_hwaccel_select="mjpeg_cuvid_decoder"
2701 mpeg_xvmc_hwaccel_deps="xvmc"
2702 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2703 mpeg1_cuvid_hwaccel_deps="cuda cuvid"
2704 mpeg1_cuvid_hwaccel_select="mpeg1_cuvid_decoder"
2705 mpeg1_vdpau_hwaccel_deps="vdpau"
2706 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2707 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2708 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2709 mpeg1_xvmc_hwaccel_deps="xvmc"
2710 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2711 mpeg2_cuvid_hwaccel_deps="cuda cuvid"
2712 mpeg2_cuvid_hwaccel_select="mpeg2_cuvid_decoder"
2713 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2714 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2715 mpeg2_d3d11va2_hwaccel_deps="d3d11va"
2716 mpeg2_d3d11va2_hwaccel_select="mpeg2video_decoder"
2717 mpeg2_dxva2_hwaccel_deps="dxva2"
2718 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2719 mpeg2_mediacodec_hwaccel_deps="mediacodec"
2720 mpeg2_mmal_hwaccel_deps="mmal"
2721 mpeg2_qsv_hwaccel_deps="libmfx"
2722 mpeg2_qsv_hwaccel_select="qsvdec_mpeg2"
2723 mpeg2_vaapi_hwaccel_deps="vaapi"
2724 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2725 mpeg2_vdpau_hwaccel_deps="vdpau"
2726 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2727 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2728 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2729 mpeg2_xvmc_hwaccel_deps="xvmc"
2730 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2731 mpeg4_cuvid_hwaccel_deps="cuda cuvid"
2732 mpeg4_cuvid_hwaccel_select="mpeg4_cuvid_decoder"
2733 mpeg4_mediacodec_hwaccel_deps="mediacodec"
2734 mpeg4_mmal_hwaccel_deps="mmal"
2735 mpeg4_vaapi_hwaccel_deps="vaapi"
2736 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2737 mpeg4_vdpau_hwaccel_deps="vdpau"
2738 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2739 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2740 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2741 vc1_cuvid_hwaccel_deps="cuda cuvid"
2742 vc1_cuvid_hwaccel_select="vc1_cuvid_decoder"
2743 vc1_d3d11va_hwaccel_deps="d3d11va"
2744 vc1_d3d11va_hwaccel_select="vc1_decoder"
2745 vc1_d3d11va2_hwaccel_deps="d3d11va"
2746 vc1_d3d11va2_hwaccel_select="vc1_decoder"
2747 vc1_dxva2_hwaccel_deps="dxva2"
2748 vc1_dxva2_hwaccel_select="vc1_decoder"
2749 vc1_mmal_hwaccel_deps="mmal"
2750 vc1_qsv_hwaccel_deps="libmfx"
2751 vc1_qsv_hwaccel_select="qsvdec_vc1"
2752 vc1_vaapi_hwaccel_deps="vaapi"
2753 vc1_vaapi_hwaccel_select="vc1_decoder"
2754 vc1_vdpau_hwaccel_deps="vdpau"
2755 vc1_vdpau_hwaccel_select="vc1_decoder"
2756 vp8_cuvid_hwaccel_deps="cuda cuvid"
2757 vp8_cuvid_hwaccel_select="vp8_cuvid_decoder"
2758 vp9_cuvid_hwaccel_deps="cuda cuvid"
2759 vp9_cuvid_hwaccel_select="vp9_cuvid_decoder"
2760 vp8_mediacodec_hwaccel_deps="mediacodec"
2761 vp8_qsv_hwaccel_deps="libmfx"
2762 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2763 vp9_d3d11va_hwaccel_select="vp9_decoder"
2764 vp9_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2765 vp9_d3d11va2_hwaccel_select="vp9_decoder"
2766 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
2767 vp9_dxva2_hwaccel_select="vp9_decoder"
2768 vp9_mediacodec_hwaccel_deps="mediacodec"
2769 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9_bit_depth"
2770 vp9_vaapi_hwaccel_select="vp9_decoder"
2771 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2772 wmv3_d3d11va2_hwaccel_select="vc1_d3d11va2_hwaccel"
2773 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2774 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2775 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2776
2777 # hardware-accelerated codecs
2778 omx_deps="libdl pthreads"
2779 omx_rpi_select="omx"
2780 qsvdec_select="qsv"
2781 qsvenc_select="qsv"
2782 vaapi_encode_deps="vaapi"
2783 v4l2_m2m_deps_any="linux_videodev2_h"
2784
2785 hwupload_cuda_filter_deps="cuda"
2786 scale_npp_filter_deps="cuda libnpp"
2787 scale_cuda_filter_deps="cuda_sdk"
2788 thumbnail_cuda_filter_deps="cuda_sdk"
2789
2790 nvenc_deps="cuda"
2791 nvenc_deps_any="libdl LoadLibrary"
2792 nvenc_encoder_deps="nvenc"
2793
2794 h263_v4l2m2m_decoder_deps="v4l2_m2m h263_v4l2_m2m"
2795 h263_v4l2m2m_encoder_deps="v4l2_m2m h263_v4l2_m2m"
2796 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2797 h264_cuvid_decoder_deps="cuda cuvid"
2798 h264_cuvid_decoder_select="h264_mp4toannexb_bsf"
2799 h264_mediacodec_decoder_deps="mediacodec"
2800 h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
2801 h264_mmal_decoder_deps="mmal"
2802 h264_nvenc_encoder_deps="nvenc"
2803 h264_omx_encoder_deps="omx"
2804 h264_qsv_decoder_deps="libmfx"
2805 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2806 h264_qsv_encoder_deps="libmfx"
2807 h264_qsv_encoder_select="qsvenc"
2808 h264_rkmpp_decoder_deps="rkmpp"
2809 h264_rkmpp_decoder_select="h264_mp4toannexb_bsf"
2810 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2811 h264_vaapi_encoder_select="cbs_h264 vaapi_encode"
2812 h264_v4l2m2m_decoder_deps="v4l2_m2m h264_v4l2_m2m"
2813 h264_v4l2m2m_encoder_deps="v4l2_m2m h264_v4l2_m2m"
2814 hevc_cuvid_decoder_deps="cuda cuvid"
2815 hevc_cuvid_decoder_select="hevc_mp4toannexb_bsf"
2816 hevc_mediacodec_decoder_deps="mediacodec"
2817 hevc_mediacodec_decoder_select="hevc_mp4toannexb_bsf hevc_parser"
2818 hevc_nvenc_encoder_deps="nvenc"
2819 hevc_qsv_decoder_deps="libmfx"
2820 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec hevc_qsv_hwaccel"
2821 hevc_qsv_encoder_deps="libmfx"
2822 hevc_qsv_encoder_select="hevcparse qsvenc"
2823 hevc_rkmpp_decoder_deps="rkmpp"
2824 hevc_rkmpp_decoder_select="hevc_mp4toannexb_bsf"
2825 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2826 hevc_vaapi_encoder_select="cbs_h265 vaapi_encode"
2827 hevc_v4l2m2m_decoder_deps="v4l2_m2m hevc_v4l2_m2m"
2828 hevc_v4l2m2m_encoder_deps="v4l2_m2m hevc_v4l2_m2m"
2829 mjpeg_cuvid_decoder_deps="cuda cuvid"
2830 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2831 mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
2832 mpeg1_cuvid_decoder_deps="cuda cuvid"
2833 mpeg1_v4l2m2m_decoder_deps="v4l2_m2m mpeg1_v4l2_m2m"
2834 mpeg2_crystalhd_decoder_select="crystalhd"
2835 mpeg2_cuvid_decoder_deps="cuda cuvid"
2836 mpeg2_mmal_decoder_deps="mmal"
2837 mpeg2_mediacodec_decoder_deps="mediacodec"
2838 mpeg2_qsv_decoder_deps="libmfx"
2839 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel"
2840 mpeg2_qsv_encoder_deps="libmfx"
2841 mpeg2_qsv_encoder_select="qsvenc"
2842 mpeg2_vaapi_encoder_deps="VAEncPictureParameterBufferMPEG2"
2843 mpeg2_vaapi_encoder_select="cbs_mpeg2 vaapi_encode"
2844 mpeg2_v4l2m2m_decoder_deps="v4l2_m2m mpeg2_v4l2_m2m"
2845 mpeg4_crystalhd_decoder_select="crystalhd"
2846 mpeg4_cuvid_decoder_deps="cuda cuvid"
2847 mpeg4_mediacodec_decoder_deps="mediacodec"
2848 mpeg4_mmal_decoder_deps="mmal"
2849 mpeg4_omx_encoder_deps="omx"
2850 mpeg4_v4l2m2m_decoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
2851 mpeg4_v4l2m2m_encoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
2852 msmpeg4_crystalhd_decoder_select="crystalhd"
2853 nvenc_h264_encoder_select="h264_nvenc_encoder"
2854 nvenc_hevc_encoder_select="hevc_nvenc_encoder"
2855 vc1_crystalhd_decoder_select="crystalhd"
2856 vc1_cuvid_decoder_deps="cuda cuvid"
2857 vc1_mmal_decoder_deps="mmal"
2858 vc1_v4l2m2m_decoder_deps="v4l2_m2m vc1_v4l2_m2m"
2859 vp8_cuvid_decoder_deps="cuda cuvid"
2860 vp8_mediacodec_decoder_deps="mediacodec"
2861 vp8_qsv_decoder_deps="libmfx"
2862 vp8_qsv_decoder_select="qsvdec vp8_qsv_hwaccel vp8_parser"
2863 vp8_rkmpp_decoder_deps="rkmpp"
2864 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
2865 vp8_vaapi_encoder_select="vaapi_encode"
2866 vp8_v4l2m2m_decoder_deps="v4l2_m2m vp8_v4l2_m2m"
2867 vp8_v4l2m2m_encoder_deps="v4l2_m2m vp8_v4l2_m2m"
2868 vp9_cuvid_decoder_deps="cuda cuvid"
2869 vp9_mediacodec_decoder_deps="mediacodec"
2870 vp9_rkmpp_decoder_deps="rkmpp"
2871 vp9_vaapi_encoder_deps="VAEncPictureParameterBufferVP9"
2872 vp9_vaapi_encoder_select="vaapi_encode"
2873 vp9_v4l2m2m_decoder_deps="v4l2_m2m vp9_v4l2_m2m"
2874 wmv3_crystalhd_decoder_select="crystalhd"
2875
2876 # parsers
2877 h264_parser_select="golomb h264dsp h264parse"
2878 hevc_parser_select="hevcparse"
2879 mpegaudio_parser_select="mpegaudioheader"
2880 mpegvideo_parser_select="mpegvideo"
2881 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
2882 vc1_parser_select="vc1dsp"
2883
2884 # bitstream_filters
2885 h264_metadata_bsf_select="cbs_h264"
2886 h264_redundant_pps_bsf_select="cbs_h264"
2887 hevc_metadata_bsf_select="cbs_h265"
2888 mjpeg2jpeg_bsf_select="jpegtables"
2889 mpeg2_metadata_bsf_select="cbs_mpeg2"
2890 trace_headers_bsf_select="cbs_h264 cbs_h265 cbs_mpeg2"
2891
2892 # external libraries
2893 aac_at_decoder_deps="audiotoolbox"
2894 ac3_at_decoder_deps="audiotoolbox"
2895 ac3_at_decoder_select="ac3_parser"
2896 adpcm_ima_qt_at_decoder_deps="audiotoolbox"
2897 alac_at_decoder_deps="audiotoolbox"
2898 amr_nb_at_decoder_deps="audiotoolbox"
2899 avisynth_deps_any="libdl LoadLibrary"
2900 avisynth_demuxer_deps="avisynth"
2901 avisynth_demuxer_select="riffdec"
2902 eac3_at_decoder_deps="audiotoolbox"
2903 eac3_at_decoder_select="ac3_parser"
2904 gsm_ms_at_decoder_deps="audiotoolbox"
2905 ilbc_at_decoder_deps="audiotoolbox"
2906 mp1_at_decoder_deps="audiotoolbox"
2907 mp2_at_decoder_deps="audiotoolbox"
2908 mp3_at_decoder_deps="audiotoolbox"
2909 mp1_at_decoder_select="mpegaudioheader"
2910 mp2_at_decoder_select="mpegaudioheader"
2911 mp3_at_decoder_select="mpegaudioheader"
2912 pcm_alaw_at_decoder_deps="audiotoolbox"
2913 pcm_mulaw_at_decoder_deps="audiotoolbox"
2914 qdmc_at_decoder_deps="audiotoolbox"
2915 qdm2_at_decoder_deps="audiotoolbox"
2916 aac_at_encoder_deps="audiotoolbox"
2917 aac_at_encoder_select="audio_frame_queue"
2918 alac_at_encoder_deps="audiotoolbox"
2919 alac_at_encoder_select="audio_frame_queue"
2920 ilbc_at_encoder_deps="audiotoolbox"
2921 ilbc_at_encoder_select="audio_frame_queue"
2922 pcm_alaw_at_encoder_deps="audiotoolbox"
2923 pcm_alaw_at_encoder_select="audio_frame_queue"
2924 pcm_mulaw_at_encoder_deps="audiotoolbox"
2925 pcm_mulaw_at_encoder_select="audio_frame_queue"
2926 chromaprint_muxer_deps="chromaprint"
2927 h264_videotoolbox_encoder_deps="pthreads"
2928 h264_videotoolbox_encoder_select="videotoolbox_encoder"
2929 libcelt_decoder_deps="libcelt"
2930 libfdk_aac_decoder_deps="libfdk_aac"
2931 libfdk_aac_encoder_deps="libfdk_aac"
2932 libfdk_aac_encoder_select="audio_frame_queue"
2933 libgme_demuxer_deps="libgme"
2934 libgsm_decoder_deps="libgsm"
2935 libgsm_encoder_deps="libgsm"
2936 libgsm_ms_decoder_deps="libgsm"
2937 libgsm_ms_encoder_deps="libgsm"
2938 libilbc_decoder_deps="libilbc"
2939 libilbc_encoder_deps="libilbc"
2940 libkvazaar_encoder_deps="libkvazaar"
2941 libmodplug_demuxer_deps="libmodplug"
2942 libmp3lame_encoder_deps="libmp3lame"
2943 libmp3lame_encoder_select="audio_frame_queue mpegaudioheader"
2944 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2945 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2946 libopencore_amrnb_encoder_select="audio_frame_queue"
2947 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2948 libopenh264_decoder_deps="libopenh264"
2949 libopenh264_decoder_select="h264_mp4toannexb_bsf"
2950 libopenh264_encoder_deps="libopenh264"
2951 libopenjpeg_decoder_deps="libopenjpeg"
2952 libopenjpeg_encoder_deps="libopenjpeg"
2953 libopenmpt_demuxer_deps="libopenmpt"
2954 libopus_decoder_deps="libopus"
2955 libopus_encoder_deps="libopus"
2956 libopus_encoder_select="audio_frame_queue"
2957 librsvg_decoder_deps="librsvg"
2958 libshine_encoder_deps="libshine"
2959 libshine_encoder_select="audio_frame_queue"
2960 libspeex_decoder_deps="libspeex"
2961 libspeex_encoder_deps="libspeex"
2962 libspeex_encoder_select="audio_frame_queue"
2963 libtheora_encoder_deps="libtheora"
2964 libtwolame_encoder_deps="libtwolame"
2965 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2966 libvorbis_decoder_deps="libvorbis"
2967 libvorbis_encoder_deps="libvorbis libvorbisenc"
2968 libvorbis_encoder_select="audio_frame_queue"
2969 libvpx_vp8_decoder_deps="libvpx"
2970 libvpx_vp8_encoder_deps="libvpx"
2971 libvpx_vp9_decoder_deps="libvpx"
2972 libvpx_vp9_encoder_deps="libvpx"
2973 libwavpack_encoder_deps="libwavpack"
2974 libwavpack_encoder_select="audio_frame_queue"
2975 libwebp_encoder_deps="libwebp"
2976 libwebp_anim_encoder_deps="libwebp"
2977 libx262_encoder_deps="libx262"
2978 libx264_encoder_deps="libx264"
2979 libx264rgb_encoder_deps="libx264 x264_csp_bgr"
2980 libx264rgb_encoder_select="libx264_encoder"
2981 libx265_encoder_deps="libx265"
2982 libxavs_encoder_deps="libxavs"
2983 libxvid_encoder_deps="libxvid"
2984 libzvbi_teletext_decoder_deps="libzvbi"
2985 videotoolbox_suggest="coreservices"
2986 videotoolbox_deps="corefoundation coremedia corevideo"
2987 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
2988
2989 # demuxers / muxers
2990 ac3_demuxer_select="ac3_parser"
2991 aiff_muxer_select="iso_media"
2992 asf_demuxer_select="riffdec"
2993 asf_o_demuxer_select="riffdec"
2994 asf_muxer_select="riffenc"
2995 asf_stream_muxer_select="asf_muxer"
2996 avi_demuxer_select="iso_media riffdec exif"
2997 avi_muxer_select="riffenc"
2998 caf_demuxer_select="iso_media riffdec"
2999 caf_muxer_select="iso_media"
3000 dash_muxer_select="mp4_muxer"
3001 dash_demuxer_deps="libxml2"
3002 dirac_demuxer_select="dirac_parser"
3003 dts_demuxer_select="dca_parser"
3004 dtshd_demuxer_select="dca_parser"
3005 dv_demuxer_select="dvprofile"
3006 dv_muxer_select="dvprofile"
3007 dxa_demuxer_select="riffdec"
3008 eac3_demuxer_select="ac3_parser"
3009 f4v_muxer_select="mov_muxer"
3010 fifo_muxer_deps="threads"
3011 flac_demuxer_select="flac_parser"
3012 hds_muxer_select="flv_muxer"
3013 hls_muxer_select="mpegts_muxer"
3014 hls_muxer_suggest="gcrypt openssl"
3015 image2_alias_pix_demuxer_select="image2_demuxer"
3016 image2_brender_pix_demuxer_select="image2_demuxer"
3017 ipod_muxer_select="mov_muxer"
3018 ismv_muxer_select="mov_muxer"
3019 matroska_audio_muxer_select="matroska_muxer"
3020 matroska_demuxer_select="iso_media riffdec"
3021 matroska_demuxer_suggest="bzlib lzo zlib"
3022 matroska_muxer_select="iso_media riffenc"
3023 mmf_muxer_select="riffenc"
3024 mov_demuxer_select="iso_media riffdec"
3025 mov_demuxer_suggest="zlib"
3026 mov_muxer_select="iso_media riffenc rtpenc_chain"
3027 mp3_demuxer_select="mpegaudio_parser"
3028 mp3_muxer_select="mpegaudioheader"
3029 mp4_muxer_select="mov_muxer"
3030 mpegts_demuxer_select="iso_media"
3031 mpegts_muxer_select="adts_muxer latm_muxer"
3032 mpegtsraw_demuxer_select="mpegts_demuxer"
3033 mxf_d10_muxer_select="mxf_muxer"
3034 mxf_opatom_muxer_select="mxf_muxer"
3035 nut_muxer_select="riffenc"
3036 nuv_demuxer_select="riffdec"
3037 oga_muxer_select="ogg_muxer"
3038 ogg_demuxer_select="dirac_parse"
3039 ogv_muxer_select="ogg_muxer"
3040 opus_muxer_select="ogg_muxer"
3041 psp_muxer_select="mov_muxer"
3042 rtp_demuxer_select="sdp_demuxer"
3043 rtp_muxer_select="golomb"
3044 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
3045 rtsp_demuxer_select="http_protocol rtpdec"
3046 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
3047 sap_demuxer_select="sdp_demuxer"
3048 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
3049 sdp_demuxer_select="rtpdec"
3050 smoothstreaming_muxer_select="ismv_muxer"
3051 spdif_muxer_select="aac_parser"
3052 spx_muxer_select="ogg_muxer"
3053 swf_demuxer_suggest="zlib"
3054 tak_demuxer_select="tak_parser"
3055 tg2_muxer_select="mov_muxer"
3056 tgp_muxer_select="mov_muxer"
3057 vobsub_demuxer_select="mpegps_demuxer"
3058 w64_demuxer_select="wav_demuxer"
3059 w64_muxer_select="wav_muxer"
3060 wav_demuxer_select="riffdec"
3061 wav_muxer_select="riffenc"
3062 webm_muxer_select="iso_media riffenc"
3063 webm_dash_manifest_demuxer_select="matroska_demuxer"
3064 wtv_demuxer_select="mpegts_demuxer riffdec"
3065 wtv_muxer_select="mpegts_muxer riffenc"
3066 xmv_demuxer_select="riffdec"
3067 xwma_demuxer_select="riffdec"
3068
3069 # indevs / outdevs
3070 alsa_indev_deps="alsa"
3071 alsa_outdev_deps="alsa"
3072 avfoundation_indev_deps="avfoundation corevideo coremedia pthreads"
3073 avfoundation_indev_suggest="coregraphics applicationservices"
3074 avfoundation_indev_extralibs="-framework Foundation"
3075 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
3076 caca_outdev_deps="libcaca"
3077 decklink_deps_any="libdl LoadLibrary"
3078 decklink_indev_deps="decklink threads"
3079 decklink_indev_extralibs="-lstdc++"
3080 decklink_outdev_deps="decklink threads"
3081 decklink_outdev_extralibs="-lstdc++"
3082 libndi_newtek_indev_deps="libndi_newtek"
3083 libndi_newtek_indev_extralibs="-lndi"
3084 libndi_newtek_outdev_deps="libndi_newtek"
3085 libndi_newtek_outdev_extralibs="-lndi"
3086 dshow_indev_deps="IBaseFilter"
3087 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
3088 fbdev_indev_deps="linux_fb_h"
3089 fbdev_outdev_deps="linux_fb_h"
3090 gdigrab_indev_deps="CreateDIBSection"
3091 gdigrab_indev_extralibs="-lgdi32"
3092 gdigrab_indev_select="bmp_decoder"
3093 iec61883_indev_deps="libiec61883"
3094 jack_indev_deps="libjack"
3095 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
3096 kmsgrab_indev_deps="libdrm"
3097 lavfi_indev_deps="avfilter"
3098 libcdio_indev_deps="libcdio"
3099 libdc1394_indev_deps="libdc1394"
3100 openal_indev_deps="openal"
3101 opengl_outdev_deps="opengl"
3102 oss_indev_deps_any="soundcard_h sys_soundcard_h"
3103 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
3104 pulse_indev_deps="libpulse"
3105 pulse_outdev_deps="libpulse"
3106 sdl2_outdev_deps="sdl2"
3107 sndio_indev_deps="sndio"
3108 sndio_outdev_deps="sndio"
3109 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
3110 v4l2_indev_suggest="libv4l2"
3111 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
3112 v4l2_outdev_suggest="libv4l2"
3113 vfwcap_indev_deps="vfw32 vfwcap_defines"
3114 xcbgrab_indev_deps="libxcb"
3115 xcbgrab_indev_suggest="libxcb_shm libxcb_shape libxcb_xfixes"
3116 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
3117 xv_outdev_extralibs="-lXv -lX11 -lXext"
3118
3119 # protocols
3120 async_protocol_deps="threads"
3121 bluray_protocol_deps="libbluray"
3122 ffrtmpcrypt_protocol_conflict="librtmp_protocol"
3123 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
3124 ffrtmpcrypt_protocol_select="tcp_protocol"
3125 ffrtmphttp_protocol_conflict="librtmp_protocol"
3126 ffrtmphttp_protocol_select="http_protocol"
3127 ftp_protocol_select="tcp_protocol"
3128 gopher_protocol_select="network"
3129 http_protocol_select="tcp_protocol"
3130 http_protocol_suggest="zlib"
3131 httpproxy_protocol_select="tcp_protocol"
3132 httpproxy_protocol_suggest="zlib"
3133 https_protocol_select="tls_protocol"
3134 https_protocol_suggest="zlib"
3135 icecast_protocol_select="http_protocol"
3136 librtmp_protocol_deps="librtmp"
3137 librtmpe_protocol_deps="librtmp"
3138 librtmps_protocol_deps="librtmp"
3139 librtmpt_protocol_deps="librtmp"
3140 librtmpte_protocol_deps="librtmp"
3141 libsmbclient_protocol_deps="libsmbclient gplv3"
3142 libssh_protocol_deps="libssh"
3143 mmsh_protocol_select="http_protocol"
3144 mmst_protocol_select="network"
3145 rtmp_protocol_conflict="librtmp_protocol"
3146 rtmp_protocol_select="tcp_protocol"
3147 rtmp_protocol_suggest="zlib"
3148 rtmpe_protocol_select="ffrtmpcrypt_protocol"
3149 rtmpe_protocol_suggest="zlib"
3150 rtmps_protocol_conflict="librtmp_protocol"
3151 rtmps_protocol_select="tls_protocol"
3152 rtmps_protocol_suggest="zlib"
3153 rtmpt_protocol_select="ffrtmphttp_protocol"
3154 rtmpt_protocol_suggest="zlib"
3155 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
3156 rtmpte_protocol_suggest="zlib"
3157 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
3158 rtmpts_protocol_suggest="zlib"
3159 rtp_protocol_select="udp_protocol"
3160 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
3161 sctp_protocol_select="network"
3162 srtp_protocol_select="rtp_protocol srtp"
3163 tcp_protocol_select="network"
3164 tls_gnutls_protocol_conflict="tls_schannel_protocol tls_securetransport_protocol"
3165 tls_gnutls_protocol_deps="gnutls"
3166 tls_gnutls_protocol_select="tcp_protocol"
3167 tls_openssl_protocol_conflict="tls_schannel_protocol tls_securetransport_protocol tls_gnutls_protocol"
3168 tls_openssl_protocol_deps="openssl"
3169 tls_openssl_protocol_select="tcp_protocol"
3170 tls_schannel_protocol_deps="schannel"
3171 tls_schannel_protocol_select="tcp_protocol"
3172 tls_securetransport_protocol_deps="securetransport"
3173 tls_securetransport_protocol_select="tcp_protocol"
3174 tls_protocol_deps_any="tls_schannel_protocol tls_securetransport_protocol tls_gnutls_protocol tls_openssl_protocol"
3175 udp_protocol_select="network"
3176 udplite_protocol_select="network"
3177 unix_protocol_deps="sys_un_h"
3178 unix_protocol_select="network"
3179
3180 # filters
3181 afftfilt_filter_deps="avcodec"
3182 afftfilt_filter_select="fft"
3183 afir_filter_deps="avcodec"
3184 afir_filter_select="fft"
3185 amovie_filter_deps="avcodec avformat"
3186 aresample_filter_deps="swresample"
3187 ass_filter_deps="libass"
3188 atempo_filter_deps="avcodec"
3189 atempo_filter_select="rdft"
3190 azmq_filter_deps="libzmq"
3191 blackframe_filter_deps="gpl"
3192 boxblur_filter_deps="gpl"
3193 bs2b_filter_deps="libbs2b"
3194 colormatrix_filter_deps="gpl"
3195 coreimage_filter_deps="coreimage appkit"
3196 coreimage_filter_extralibs="-framework OpenGL"
3197 coreimagesrc_filter_deps="coreimage appkit"
3198 coreimagesrc_filter_extralibs="-framework OpenGL"
3199 cover_rect_filter_deps="avcodec avformat gpl"
3200 cropdetect_filter_deps="gpl"
3201 deinterlace_qsv_filter_deps="libmfx"
3202 deinterlace_vaapi_filter_deps="vaapi"
3203 delogo_filter_deps="gpl"
3204 deshake_filter_select="pixelutils"
3205 deshake_filter_suggest="opencl"
3206 drawtext_filter_deps="libfreetype"
3207 drawtext_filter_suggest="libfontconfig libfribidi"
3208 elbg_filter_deps="avcodec"
3209 eq_filter_deps="gpl"
3210 fftfilt_filter_deps="avcodec"
3211 fftfilt_filter_select="rdft"
3212 find_rect_filter_deps="avcodec avformat gpl"
3213 firequalizer_filter_deps="avcodec"
3214 firequalizer_filter_select="rdft"
3215 flite_filter_deps="libflite"
3216 framerate_filter_select="pixelutils"
3217 frei0r_filter_deps="frei0r libdl"
3218 frei0r_src_filter_deps="frei0r libdl"
3219 fspp_filter_deps="gpl"
3220 geq_filter_deps="gpl"
3221 histeq_filter_deps="gpl"
3222 hqdn3d_filter_deps="gpl"
3223 interlace_filter_deps="gpl"
3224 kerndeint_filter_deps="gpl"
3225 ladspa_filter_deps="ladspa libdl"
3226 mcdeint_filter_deps="avcodec gpl"
3227 movie_filter_deps="avcodec avformat"
3228 mpdecimate_filter_deps="gpl"
3229 mpdecimate_filter_select="pixelutils"
3230 mptestsrc_filter_deps="gpl"
3231 negate_filter_deps="lut_filter"
3232 nnedi_filter_deps="gpl"
3233 ocr_filter_deps="libtesseract"
3234 ocv_filter_deps="libopencv"
3235 owdenoise_filter_deps="gpl"
3236 pan_filter_deps="swresample"
3237 perspective_filter_deps="gpl"
3238 phase_filter_deps="gpl"
3239 pp7_filter_deps="gpl"
3240 pp_filter_deps="gpl postproc"
3241 pullup_filter_deps="gpl"
3242 removelogo_filter_deps="avcodec avformat swscale"
3243 repeatfields_filter_deps="gpl"
3244 resample_filter_deps="avresample"
3245 rubberband_filter_deps="librubberband"
3246 sab_filter_deps="gpl swscale"
3247 scale2ref_filter_deps="swscale"
3248 scale_filter_deps="swscale"
3249 scale_qsv_filter_deps="libmfx"
3250 select_filter_select="pixelutils"
3251 showcqt_filter_deps="avcodec avformat swscale"
3252 showcqt_filter_suggest="libfontconfig libfreetype"
3253 showcqt_filter_select="fft"
3254 showfreqs_filter_deps="avcodec"
3255 showfreqs_filter_select="fft"
3256 showspectrum_filter_deps="avcodec"
3257 showspectrum_filter_select="fft"
3258 showspectrumpic_filter_deps="avcodec"
3259 showspectrumpic_filter_select="fft"
3260 signature_filter_deps="gpl avcodec avformat"
3261 smartblur_filter_deps="gpl swscale"
3262 sofalizer_filter_deps="libmysofa avcodec"
3263 sofalizer_filter_select="fft"
3264 spectrumsynth_filter_deps="avcodec"
3265 spectrumsynth_filter_select="fft"
3266 spp_filter_deps="gpl avcodec"
3267 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3268 stereo3d_filter_deps="gpl"
3269 subtitles_filter_deps="avformat avcodec libass"
3270 super2xsai_filter_deps="gpl"
3271 pixfmts_super2xsai_test_deps="super2xsai_filter"
3272 tinterlace_filter_deps="gpl"
3273 tinterlace_merge_test_deps="tinterlace_filter"
3274 tinterlace_pad_test_deps="tinterlace_filter"
3275 tonemap_filter_deps="const_nan"
3276 uspp_filter_deps="gpl avcodec"
3277 unsharp_filter_suggest="opencl"
3278 vaguedenoiser_filter_deps="gpl"
3279 vidstabdetect_filter_deps="libvidstab"
3280 vidstabtransform_filter_deps="libvidstab"
3281 libvmaf_filter_deps="libvmaf"
3282 zmq_filter_deps="libzmq"
3283 zoompan_filter_deps="swscale"
3284 zscale_filter_deps="libzimg const_nan"
3285 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3286
3287 # examples
3288 avio_dir_cmd_deps="avformat avutil"
3289 avio_reading_deps="avformat avcodec avutil"
3290 decode_audio_example_deps="avcodec avutil"
3291 decode_video_example_deps="avcodec avutil"
3292 demuxing_decoding_example_deps="avcodec avformat avutil"
3293 encode_audio_example_deps="avcodec avutil"
3294 encode_video_example_deps="avcodec avutil"
3295 extract_mvs_example_deps="avcodec avformat avutil"
3296 filter_audio_example_deps="avfilter avutil"
3297 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3298 filtering_video_example_deps="avfilter avcodec avformat avutil"
3299 http_multiclient_example_deps="avformat avutil fork"
3300 hw_decode_example_deps="avcodec avformat avutil"
3301 metadata_example_deps="avformat avutil"
3302 muxing_example_deps="avcodec avformat avutil swscale"
3303 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
3304 remuxing_example_deps="avcodec avformat avutil"
3305 resampling_audio_example_deps="avutil swresample"
3306 scaling_video_example_deps="avutil swscale"
3307 transcode_aac_example_deps="avcodec avformat swresample"
3308 transcoding_example_deps="avfilter avcodec avformat avutil"
3309
3310 # EXTRALIBS_LIST
3311 cpu_init_extralibs="pthreads_extralibs"
3312 cws2fws_extralibs="zlib_extralibs"
3313
3314 # libraries, in linking order
3315 avcodec_deps="avutil"
3316 avcodec_suggest="libm"
3317 avcodec_select="null_bsf"
3318 avdevice_deps="avformat avcodec avutil"
3319 avdevice_suggest="libm"
3320 avfilter_deps="avutil"
3321 avfilter_suggest="libm"
3322 avformat_deps="avcodec avutil"
3323 avformat_suggest="libm network"
3324 avresample_deps="avutil"
3325 avresample_suggest="libm"
3326 avutil_suggest="clock_gettime libm libdrm libmfx opencl user32 vaapi videotoolbox corefoundation corevideo coremedia wincrypt"
3327 postproc_deps="avutil gpl"
3328 postproc_suggest="libm"
3329 swresample_deps="avutil"
3330 swresample_suggest="libm libsoxr"
3331 swscale_deps="avutil"
3332 swscale_suggest="libm"
3333
3334 avcodec_extralibs="pthreads_extralibs iconv_extralibs"
3335 avfilter_extralibs="pthreads_extralibs"
3336 avutil_extralibs="nanosleep_extralibs pthreads_extralibs vaapi_drm_extralibs vaapi_x11_extralibs vdpau_x11_extralibs"
3337
3338 # programs
3339 ffmpeg_deps="avcodec avfilter avformat swresample"
3340 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3341                null_filter
3342                trim_filter"
3343 ffmpeg_suggest="ole32 psapi shell32"
3344 ffplay_deps="avcodec avformat swscale swresample sdl2"
3345 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3346 ffplay_suggest="shell32"
3347 ffprobe_deps="avcodec avformat"
3348 ffprobe_suggest="shell32"
3349 ffserver_deps="avformat fork sarestart"
3350 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
3351
3352 # documentation
3353 podpages_deps="perl"
3354 manpages_deps="perl pod2man"
3355 htmlpages_deps="perl"
3356 htmlpages_deps_any="makeinfo_html texi2html"
3357 txtpages_deps="perl makeinfo"
3358 doc_deps_any="manpages htmlpages podpages txtpages"
3359
3360 # default parameters
3361
3362 logfile="ffbuild/config.log"
3363
3364 # installation paths
3365 prefix_default="/usr/local"
3366 bindir_default='${prefix}/bin'
3367 datadir_default='${prefix}/share/ffmpeg'
3368 docdir_default='${prefix}/share/doc/ffmpeg'
3369 incdir_default='${prefix}/include'
3370 libdir_default='${prefix}/lib'
3371 mandir_default='${prefix}/share/man'
3372
3373 # toolchain
3374 ar_default="ar"
3375 cc_default="gcc"
3376 cxx_default="g++"
3377 host_cc_default="gcc"
3378 doxygen_default="doxygen"
3379 install="install"
3380 ln_s_default="ln -s -f"
3381 nm_default="nm -g"
3382 pkg_config_default=pkg-config
3383 ranlib_default="ranlib"
3384 strip_default="strip"
3385 version_script='--version-script'
3386 x86asmexe_default="nasm"
3387 windres_default="windres"
3388 nvcc_default="nvcc"
3389 nvccflags_default="-gencode arch=compute_30,code=sm_30 -O2"
3390 striptype="direct"
3391
3392 # OS
3393 target_os_default=$(tolower $(uname -s))
3394 host_os=$target_os_default
3395
3396 # machine
3397 if test "$target_os_default" = aix; then
3398     arch_default=$(uname -p)
3399     strip_default="strip -X32_64"
3400 else
3401     arch_default=$(uname -m)
3402 fi
3403 cpu="generic"
3404 intrinsics="none"
3405
3406 # configurable options
3407 enable $PROGRAM_LIST
3408 enable $DOCUMENT_LIST
3409 enable $EXAMPLE_LIST
3410 enable $(filter_out avresample $LIBRARY_LIST)
3411 enable stripping
3412
3413 enable asm
3414 enable debug
3415 enable doc
3416 enable faan faandct faanidct
3417 enable optimizations
3418 enable runtime_cpudetect
3419 enable safe_bitstream_reader
3420 enable static
3421 enable swscale_alpha
3422 enable valgrind_backtrace
3423
3424 sws_max_filter_size_default=256
3425 set_default sws_max_filter_size
3426
3427 # internal components are enabled by default
3428 enable $EXTRALIBS_LIST
3429
3430 # Avoid external, non-system, libraries getting enabled by dependency resolution
3431 disable $EXTERNAL_LIBRARY_LIST $HWACCEL_LIBRARY_LIST
3432
3433 # build settings
3434 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3435 LIBPREF="lib"
3436 LIBSUF=".a"
3437 FULLNAME='$(NAME)$(BUILDSUF)'
3438 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3439 SLIBPREF="lib"
3440 SLIBSUF=".so"
3441 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3442 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3443 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3444 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3445 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3446 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3447 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
3448
3449 asflags_filter=echo
3450 cflags_filter=echo
3451 ldflags_filter=echo
3452
3453 AS_C='-c'
3454 AS_O='-o $@'
3455 CC_C='-c'
3456 CC_E='-E -o $@'
3457 CC_O='-o $@'
3458 CXX_C='-c'
3459 CXX_O='-o $@'
3460 OBJCC_C='-c'
3461 OBJCC_E='-E -o $@'
3462 OBJCC_O='-o $@'
3463 X86ASM_O='-o $@'
3464 LD_O='-o $@'
3465 LD_LIB='-l%'
3466 LD_PATH='-L'
3467 HOSTCC_C='-c'
3468 HOSTCC_E='-E -o $@'
3469 HOSTCC_O='-o $@'
3470 HOSTLD_O='-o $@'
3471 NVCC_C='-c'
3472 NVCC_O='-o $@'
3473
3474 host_extralibs='-lm'
3475 host_cflags_filter=echo
3476 host_ldflags_filter=echo
3477
3478 target_path='$(CURDIR)'
3479
3480 # since the object filename is not given with the -MM flag, the compiler
3481 # is only able to print the basename, and we must add the path ourselves
3482 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3483 DEPFLAGS='-MM'
3484
3485 mkdir -p ffbuild
3486
3487 # find source path
3488 if test -f configure; then
3489     source_path=.
3490 else
3491     source_path=$(cd $(dirname "$0"); pwd)
3492     case "$source_path" in
3493         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3494     esac
3495     test -e "$source_path/config.h" &&
3496         die "Out of tree builds are impossible with config.h in source dir."
3497 fi
3498
3499 for v in "$@"; do
3500     r=${v#*=}
3501     l=${v%"$r"}
3502     r=$(sh_quote "$r")
3503     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3504 done
3505
3506 find_things(){
3507     thing=$1
3508     pattern=$2
3509     file=$source_path/$3
3510     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
3511 }
3512
3513 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
3514 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
3515 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
3516 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
3517 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
3518 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
3519 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
3520 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
3521 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
3522
3523 find_things_extern(){
3524     thing=$1
3525     pattern=$2
3526     file=$source_path/$3
3527     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
3528 }
3529
3530 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3531 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3532
3533 AVCODEC_COMPONENTS_LIST="
3534     $BSF_LIST
3535     $DECODER_LIST
3536     $ENCODER_LIST
3537     $HWACCEL_LIST
3538     $PARSER_LIST
3539 "
3540
3541 AVDEVICE_COMPONENTS_LIST="
3542     $INDEV_LIST
3543     $OUTDEV_LIST
3544 "
3545
3546 AVFILTER_COMPONENTS_LIST="
3547     $FILTER_LIST
3548 "
3549
3550 AVFORMAT_COMPONENTS_LIST="
3551     $DEMUXER_LIST
3552     $MUXER_LIST
3553     $PROTOCOL_LIST
3554 "
3555
3556 ALL_COMPONENTS="
3557     $AVCODEC_COMPONENTS_LIST
3558     $AVDEVICE_COMPONENTS_LIST
3559     $AVFILTER_COMPONENTS_LIST
3560     $AVFORMAT_COMPONENTS_LIST
3561 "
3562
3563 for n in $COMPONENT_LIST; do
3564     v=$(toupper ${n%s})_LIST
3565     eval enable \$$v
3566     eval ${n}_if_any="\$$v"
3567 done
3568
3569 enable $ARCH_EXT_LIST
3570
3571 die_unknown(){
3572     echo "Unknown option \"$1\"."
3573     echo "See $0 --help for available options."
3574     exit 1
3575 }
3576
3577 print_in_columns() {
3578     cols=$(expr $ncols / 24)
3579     cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
3580 }
3581
3582 show_list() {
3583     suffix=_$1
3584     shift
3585     echo $* | sed s/$suffix//g | print_in_columns
3586     exit 0
3587 }
3588
3589 rand_list(){
3590     IFS=', '
3591     set -- $*
3592     unset IFS
3593     for thing; do
3594         comp=${thing%:*}
3595         prob=${thing#$comp}
3596         prob=${prob#:}
3597         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3598         echo "prob ${prob:-0.5}"
3599         printf '%s\n' $comp
3600     done
3601 }
3602
3603 do_random(){
3604     action=$1
3605     shift
3606     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3607     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3608 }
3609
3610 for opt do
3611     optval="${opt#*=}"
3612     case "$opt" in
3613         --extra-ldflags=*)
3614             add_ldflags $optval
3615         ;;
3616         --extra-ldexeflags=*)
3617             add_ldexeflags $optval
3618         ;;
3619         --extra-ldlibflags=*)
3620             add_ldlibflags $optval
3621         ;;
3622         --extra-libs=*)
3623             add_extralibs $optval
3624         ;;
3625         --disable-devices)
3626             disable $INDEV_LIST $OUTDEV_LIST
3627         ;;
3628         --enable-debug=*)
3629             debuglevel="$optval"
3630         ;;
3631         --disable-programs)
3632             disable $PROGRAM_LIST
3633         ;;
3634         --disable-everything)
3635             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3636         ;;
3637         --disable-all)
3638             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3639             disable $LIBRARY_LIST $PROGRAM_LIST doc
3640             enable avutil
3641         ;;
3642         --enable-random|--disable-random)
3643             action=${opt%%-random}
3644             do_random ${action#--} $COMPONENT_LIST
3645         ;;
3646         --enable-random=*|--disable-random=*)
3647             action=${opt%%-random=*}
3648             do_random ${action#--} $optval
3649         ;;
3650         --enable-sdl)
3651             enable sdl2
3652         ;;
3653         --enable-*=*|--disable-*=*)
3654             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3655             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3656             eval list=\$$(toupper $thing)_LIST
3657             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3658             list=$(filter "$name" $list)
3659             [ "$list" = "" ] && warn "Option $opt did not match anything"
3660             $action $list
3661         ;;
3662         --enable-yasm|--disable-yasm)
3663             warn "The ${opt} option is only provided for compatibility and will be\n"\
3664                  "removed in the future. Use --enable-x86asm / --disable-x86asm instead."
3665             test $opt = --enable-yasm && x86asm=yes || x86asm=no
3666         ;;
3667         --yasmexe=*)
3668             warn "The --yasmexe option is only provided for compatibility and will be\n"\
3669                  "removed in the future. Use --x86asmexe instead."
3670             x86asmexe="$optval"
3671         ;;
3672         --enable-?*|--disable-?*)
3673             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3674             if is_in $option $COMPONENT_LIST; then
3675                 test $action = disable && action=unset
3676                 eval $action \$$(toupper ${option%s})_LIST
3677             elif is_in $option $CMDLINE_SELECT; then
3678                 $action $option
3679             else
3680                 die_unknown $opt
3681             fi
3682         ;;
3683         --list-*)
3684             NAME="${opt#--list-}"
3685             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3686             NAME=${NAME%s}
3687             eval show_list $NAME \$$(toupper $NAME)_LIST
3688         ;;
3689         --help|-h) show_help
3690         ;;
3691         --quiet|-q) quiet=yes
3692         ;;
3693         --fatal-warnings) enable fatal_warnings
3694         ;;
3695         --libfuzzer=*)
3696             libfuzzer_path="$optval"
3697         ;;
3698         *)
3699             optname="${opt%%=*}"
3700             optname="${optname#--}"
3701             optname=$(echo "$optname" | sed 's/-/_/g')
3702             if is_in $optname $CMDLINE_SET; then
3703                 eval $optname='$optval'
3704             elif is_in $optname $CMDLINE_APPEND; then
3705                 append $optname "$optval"
3706             else
3707                 die_unknown $opt
3708             fi
3709         ;;
3710     esac
3711 done
3712
3713 for e in $env; do
3714     eval "export $e"
3715 done
3716
3717 if disabled autodetect; then
3718
3719     # Unless iconv is explicitely disabled by the user, we still want to probe
3720     # for the iconv from the libc.
3721     disabled iconv || enable libc_iconv
3722
3723     disable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3724     disable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3725 fi
3726 # Mark specifically enabled, but normally autodetected libraries as requested.
3727 for lib in $AUTODETECT_LIBS; do
3728     enabled $lib && request $lib
3729 done
3730 #TODO: switch to $AUTODETECT_LIBS when $THREADS_LIST is supported the same way
3731 enable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3732 enable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3733
3734 disabled logging && logfile=/dev/null
3735
3736 die_license_disabled() {
3737     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
3738 }
3739
3740 die_license_disabled_gpl() {
3741     enabled $1 || { enabled $v && die "$v is incompatible with the gpl and --enable-$1 is not specified."; }
3742 }
3743
3744 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3745 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3746
3747 enabled gpl && map "die_license_disabled_gpl nonfree" $EXTERNAL_LIBRARY_NONFREE_LIST
3748 map "die_license_disabled nonfree" $HWACCEL_LIBRARY_NONFREE_LIST
3749
3750 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3751
3752 # Disable all the library-specific components if the library itself
3753 # is disabled, see AVCODEC_LIST and following _LIST variables.
3754
3755 disable_components(){
3756     disabled ${1} && disable $(
3757         eval components="\$$(toupper ${1})_COMPONENTS"
3758         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
3759     )
3760 }
3761
3762 map 'disable_components $v' $LIBRARY_LIST
3763
3764 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
3765 set >> $logfile
3766
3767 test -n "$valgrind" && toolchain="valgrind-memcheck"
3768
3769 enabled ossfuzz && {
3770     add_cflags  -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp -fno-omit-frame-pointer
3771     add_ldflags -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp
3772 }
3773
3774 case "$toolchain" in
3775     *-asan)
3776         cc_default="${toolchain%-asan}"
3777         add_cflags  -fsanitize=address
3778         add_ldflags -fsanitize=address
3779     ;;
3780     *-msan)
3781         cc_default="${toolchain%-msan}"
3782         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
3783         add_ldflags -fsanitize=memory
3784     ;;
3785     *-tsan)
3786         cc_default="${toolchain%-tsan}"
3787         add_cflags  -fsanitize=thread -fPIE
3788         add_ldflags -fsanitize=thread -pie
3789         case "$toolchain" in
3790             gcc-tsan)
3791                 add_cflags  -fPIC
3792                 add_ldflags -fPIC
3793                 ;;
3794         esac
3795     ;;
3796     *-usan)
3797         cc_default="${toolchain%-usan}"
3798         add_cflags  -fsanitize=undefined
3799         add_ldflags -fsanitize=undefined
3800     ;;
3801     valgrind-*)
3802         target_exec_default="valgrind"
3803         case "$toolchain" in
3804             valgrind-massif)
3805                 target_exec_args="--tool=massif --alloc-fn=av_malloc --alloc-fn=av_mallocz --alloc-fn=av_calloc --alloc-fn=av_fast_padded_malloc --alloc-fn=av_fast_malloc --alloc-fn=av_realloc_f --alloc-fn=av_fast_realloc --alloc-fn=av_realloc"
3806                 ;;
3807             valgrind-memcheck)
3808                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3809                 ;;
3810         esac
3811     ;;
3812     msvc)
3813         # Check whether the current MSVC version needs the C99 converter.
3814         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3815         # support enough of C99 to build ffmpeg. Default to the new
3816         # behaviour if the regexp was unable to match anything, since this
3817         # successfully parses the version number of existing supported
3818         # versions that require the converter (MSVC 2010 and 2012).
3819         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3820         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3821             cc_default="cl"
3822             cxx_default="cl"
3823         else
3824             cc_default="c99wrap cl"
3825             cxx_default="c99wrap cl"
3826         fi
3827         ld_default="$source_path/compat/windows/mslink"
3828         nm_default="dumpbin -symbols"
3829         ar_default="lib"
3830         case "$arch" in
3831         arm*)
3832             as_default="armasm"
3833             ;;
3834         esac
3835         target_os_default="win32"
3836         # Use a relative path for TMPDIR. This makes sure all the
3837         # ffconf temp files are written with a relative path, avoiding
3838         # issues with msys/win32 path conversion for MSVC parameters
3839         # such as -Fo<file> or -out:<file>.
3840         TMPDIR=.
3841     ;;
3842     icl)
3843         cc_default="icl"
3844         ld_default="xilink"
3845         nm_default="dumpbin -symbols"
3846         ar_default="xilib"
3847         target_os_default="win32"
3848         TMPDIR=.
3849     ;;
3850     gcov)
3851         add_cflags  -fprofile-arcs -ftest-coverage
3852         add_ldflags -fprofile-arcs -ftest-coverage
3853     ;;
3854     llvm-cov)
3855         add_cflags -fprofile-arcs -ftest-coverage
3856         add_ldflags --coverage
3857     ;;
3858     hardened)
3859         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3860         add_cflags   -fno-strict-overflow -fstack-protector-all
3861         add_ldflags  -Wl,-z,relro -Wl,-z,now
3862         add_cflags   -fPIE
3863         add_ldexeflags -fPIE -pie
3864     ;;
3865     ?*)
3866         die "Unknown toolchain $toolchain"
3867     ;;
3868 esac
3869
3870 test -n "$cross_prefix" && enable cross_compile
3871
3872 if enabled cross_compile; then
3873     test -n "$arch" && test -n "$target_os" ||
3874         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
3875 fi
3876
3877 ar_default="${cross_prefix}${ar_default}"
3878 cc_default="${cross_prefix}${cc_default}"
3879 cxx_default="${cross_prefix}${cxx_default}"
3880 nm_default="${cross_prefix}${nm_default}"
3881 pkg_config_default="${cross_prefix}${pkg_config_default}"
3882 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
3883     ranlib_default="${cross_prefix}${ranlib_default} -D"
3884 else
3885     ranlib_default="${cross_prefix}${ranlib_default}"
3886 fi
3887 strip_default="${cross_prefix}${strip_default}"
3888 windres_default="${cross_prefix}${windres_default}"
3889
3890 sysinclude_default="${sysroot}/usr/include"
3891
3892 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3893     target_exec target_os x86asmexe nvcc
3894 enabled cross_compile || host_cc_default=$cc
3895 set_default host_cc
3896
3897 pkg_config_fail_message=""
3898 if ! $pkg_config --version >/dev/null 2>&1; then
3899     warn "$pkg_config not found, library detection may fail."
3900     pkg_config=false
3901 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
3902     pkg_config_fail_message="
3903 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
3904 fi
3905
3906 if test $doxygen != $doxygen_default && \
3907   ! $doxygen --version >/dev/null 2>&1; then
3908     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3909 fi
3910
3911 exesuf() {
3912     case $1 in
3913         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3914     esac
3915 }
3916
3917 EXESUF=$(exesuf $target_os)
3918 HOSTEXESUF=$(exesuf $host_os)
3919
3920 # set temporary file name
3921 : ${TMPDIR:=$TEMPDIR}
3922 : ${TMPDIR:=$TMP}
3923 : ${TMPDIR:=/tmp}
3924
3925 if [ -n "$tempprefix" ] ; then
3926     mktemp(){
3927         tmpname="$tempprefix.${HOSTNAME}.${UID}"
3928         echo "$tmpname"
3929         mkdir "$tmpname"
3930     }
3931 elif ! check_cmd mktemp -u XXXXXX; then
3932     # simple replacement for missing mktemp
3933     # NOT SAFE FOR GENERAL USE
3934     mktemp(){
3935         tmpname="${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3936         echo "$tmpname"
3937         mkdir "$tmpname"
3938     }
3939 fi
3940
3941 FFTMPDIR=$(mktemp -d "${TMPDIR}/ffconf.XXXXXXXX" 2> /dev/null) ||
3942     die "Unable to create temporary directory in $TMPDIR."
3943
3944 tmpfile(){
3945     tmp="${FFTMPDIR}/test"$2
3946     (set -C; exec > $tmp) 2> /dev/null ||
3947         die "Unable to create temporary file in $FFTMPDIR."
3948     eval $1=$tmp
3949 }
3950
3951 trap 'rm -rf -- "$FFTMPDIR"' EXIT
3952 trap 'exit 2' INT
3953
3954 tmpfile TMPASM .asm
3955 tmpfile TMPC   .c
3956 tmpfile TMPCPP .cpp
3957 tmpfile TMPE   $EXESUF
3958 tmpfile TMPH   .h
3959 tmpfile TMPM   .m
3960 tmpfile TMPO   .o
3961 tmpfile TMPS   .S
3962 tmpfile TMPSH  .sh
3963 tmpfile TMPV   .ver
3964
3965 unset -f mktemp
3966
3967 chmod +x $TMPE
3968
3969 # make sure we can execute files in $TMPDIR
3970 cat > $TMPSH 2>> $logfile <<EOF
3971 #! /bin/sh
3972 EOF
3973 chmod +x $TMPSH >> $logfile 2>&1
3974 if ! $TMPSH >> $logfile 2>&1; then
3975     cat <<EOF
3976 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3977 variable to another directory and make sure that it is not mounted noexec.
3978 EOF
3979     die "Sanity test failed."
3980 fi
3981
3982 armasm_flags(){
3983     for flag; do
3984         case $flag in
3985             # Filter out MSVC cl.exe options from cflags that shouldn't
3986             # be passed to gas-preprocessor
3987             -M[TD]*)                                            ;;
3988             *)                  echo $flag                      ;;
3989         esac
3990    done
3991 }
3992
3993 ccc_flags(){
3994     for flag; do
3995         case $flag in
3996             -std=c99)           echo -c99                       ;;
3997             -mcpu=*)            echo -arch ${flag#*=}           ;;
3998             -mieee)             echo -ieee                      ;;
3999             -O*|-fast)          echo $flag                      ;;
4000             -fno-math-errno)    echo -assume nomath_errno       ;;
4001             -g)                 echo -g3                        ;;
4002             -Wall)              echo -msg_enable level2         ;;
4003             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
4004             -Wl,*)              echo $flag                      ;;
4005             -f*|-W*)                                            ;;
4006             *)                  echo $flag                      ;;
4007         esac
4008    done
4009 }
4010
4011 cparser_flags(){
4012     for flag; do
4013         case $flag in
4014             -Wno-switch)             echo -Wno-switch-enum ;;
4015             -Wno-format-zero-length) ;;
4016             -Wdisabled-optimization) ;;
4017             -Wno-pointer-sign)       echo -Wno-other ;;
4018             *)                       echo $flag ;;
4019         esac
4020     done
4021 }
4022
4023 msvc_common_flags(){
4024     for flag; do
4025         case $flag in
4026             # In addition to specifying certain flags under the compiler
4027             # specific filters, they must be specified here as well or else the
4028             # generic catch all at the bottom will print the original flag.
4029             -Wall)                ;;
4030             -Wextra)              ;;
4031             -std=c99)             ;;
4032             # Common flags
4033             -fomit-frame-pointer) ;;
4034             -g)                   echo -Z7 ;;
4035             -fno-math-errno)      ;;
4036             -fno-common)          ;;
4037             -fno-signed-zeros)    ;;
4038             -fPIC)                ;;
4039             -mthumb)              ;;
4040             -march=*)             ;;
4041             -lz)                  echo zlib.lib ;;
4042             -lx264)               echo libx264.lib ;;
4043             -lstdc++)             ;;
4044             -l*)                  echo ${flag#-l}.lib ;;
4045             -LARGEADDRESSAWARE)   echo $flag ;;
4046             -L*)                  echo -libpath:${flag#-L} ;;
4047             *)                    echo $flag ;;
4048         esac
4049     done
4050 }
4051
4052 msvc_flags(){
4053     msvc_common_flags "$@"
4054     for flag; do
4055         case $flag in
4056             -Wall)                echo -W3 -wd4018 -wd4146 -wd4244 -wd4305     \
4057                                        -wd4554 ;;
4058             -Wextra)              echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
4059                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
4060                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
4061                                        -wd4307 \
4062                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
4063         esac
4064     done
4065 }
4066
4067 icl_flags(){
4068     msvc_common_flags "$@"
4069     for flag; do
4070         case $flag in
4071             # Despite what Intel's documentation says -Wall, which is supported
4072             # on Windows, does enable remarks so disable them here.
4073             -Wall)                echo $flag -Qdiag-disable:remark ;;
4074             -std=c99)             echo -Qstd=c99 ;;
4075             -flto)                echo -ipo ;;
4076         esac
4077     done
4078 }
4079
4080 icc_flags(){
4081     for flag; do
4082         case $flag in
4083             -flto)                echo -ipo ;;
4084             *)                    echo $flag ;;
4085         esac
4086     done
4087 }
4088
4089 pgi_flags(){
4090     for flag; do
4091         case $flag in
4092             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
4093             -fomit-frame-pointer) echo -Mnoframe ;;
4094             -g)                   echo -gopt ;;
4095             *)                    echo $flag ;;
4096         esac
4097     done
4098 }
4099
4100 suncc_flags(){
4101     for flag; do
4102         case $flag in
4103             -march=*|-mcpu=*)
4104                 case "${flag#*=}" in
4105                     native)                   echo -xtarget=native       ;;
4106                     v9|niagara)               echo -xarch=sparc          ;;
4107                     ultrasparc)               echo -xarch=sparcvis       ;;
4108                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
4109                     i586|pentium)             echo -xchip=pentium        ;;
4110                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
4111                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
4112                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
4113                     pentium4*)          echo -xtarget=pentium4           ;;
4114                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
4115                     *-sse3)             echo -xarch=sse3                 ;;
4116                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
4117                     bonnell)                   echo -xarch=ssse3         ;;
4118                     corei7|nehalem)            echo -xtarget=nehalem     ;;
4119                     westmere)                  echo -xtarget=westmere    ;;
4120                     silvermont)                echo -xarch=sse4_2        ;;
4121                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
4122                     core-avx*|ivybridge|haswell|broadwell|skylake*|knl)
4123                                                echo -xarch=avx           ;;
4124                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
4125                     btver1)                    echo -xarch=amdsse4a      ;;
4126                     btver2|bdver*|znver*)      echo -xarch=avx           ;;
4127                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
4128                     k8|opteron|athlon64|athlon-fx)
4129                                                echo -xarch=sse2a         ;;
4130                     athlon*)                   echo -xarch=pentium_proa  ;;
4131                 esac
4132                 ;;
4133             -std=c99)             echo -xc99              ;;
4134             -fomit-frame-pointer) echo -xregs=frameptr    ;;
4135             -fPIC)                echo -KPIC -xcode=pic32 ;;
4136             -W*,*)                echo $flag              ;;
4137             -f*-*|-W*|-mimpure-text)                      ;;
4138             -shared)              echo -G                 ;;
4139             *)                    echo $flag              ;;
4140         esac
4141     done
4142 }
4143
4144 tms470_flags(){
4145     for flag; do
4146         case $flag in
4147             -march=*|-mcpu=*)
4148                 case "${flag#*=}" in
4149                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
4150                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
4151                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
4152                     armv6*|arm11*)          echo -mv=6   ;;
4153                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
4154                                             echo -mv=5e  ;;
4155                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
4156                 esac
4157                 ;;
4158             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
4159             -mfpu=vfp)      echo --float_support=vfpv2        ;;
4160             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
4161             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
4162             -msoft-float)   echo --float_support=vfplib       ;;
4163             -O[0-3]|-mf=*)  echo $flag                        ;;
4164             -g)             echo -g -mn                       ;;
4165             -pds=*)         echo $flag                        ;;
4166             -D*|-I*)        echo $flag                        ;;
4167             --gcc|--abi=*)  echo $flag                        ;;
4168             -me)            echo $flag                        ;;
4169         esac
4170     done
4171 }
4172
4173 probe_cc(){
4174     pfx=$1
4175     _cc=$2
4176     first=$3
4177
4178     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
4179     unset _ld_o _ldflags _ld_lib _ld_path
4180     unset _depflags _DEPCMD _DEPFLAGS
4181     _flags_filter=echo
4182
4183     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
4184         true # no-op to avoid reading stdin in following checks
4185     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
4186         _type=llvm_gcc
4187         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
4188         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
4189         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4190         _cflags_speed='-O3'
4191         _cflags_size='-Os'
4192     elif $_cc -v 2>&1 | grep -qi ^gcc; then
4193         _type=gcc
4194         gcc_version=$($_cc --version | head -n1)
4195         gcc_basever=$($_cc -dumpversion)
4196         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
4197         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
4198         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
4199         case $gcc_basever in
4200             2) ;;
4201             2.*) ;;
4202             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
4203         esac
4204         if [ "$first" = true ]; then
4205             case $gcc_basever in
4206                 4.2*)
4207                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
4208             esac
4209         fi
4210         _cflags_speed='-O3'
4211         _cflags_size='-Os'
4212     elif $_cc --version 2>/dev/null | grep -q ^icc; then
4213         _type=icc
4214         _ident=$($_cc --version | head -n1)
4215         _depflags='-MMD'
4216         _cflags_speed='-O3'
4217         _cflags_size='-Os'
4218         _cflags_noopt='-O1'
4219         _flags_filter=icc_flags
4220     elif $_cc -v 2>&1 | grep -q xlc; then
4221         _type=xlc
4222         _ident=$($_cc -qversion 2>/dev/null | head -n1)
4223         _cflags_speed='-O5'
4224         _cflags_size='-O5 -qcompact'
4225     elif $_cc -V 2>/dev/null | grep -q Compaq; then
4226         _type=ccc
4227         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
4228         _DEPFLAGS='-M'
4229         _cflags_speed='-fast'
4230         _cflags_size='-O1'
4231         _flags_filter=ccc_flags
4232     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
4233         test -d "$sysroot" || die "No valid sysroot specified."
4234         _type=armcc
4235         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
4236         armcc_conf="$PWD/armcc.conf"
4237         $_cc --arm_linux_configure                 \
4238              --arm_linux_config_file="$armcc_conf" \
4239              --configure_sysroot="$sysroot"        \
4240              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
4241              die "Error creating armcc configuration file."
4242         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
4243         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
4244         as_default="${cross_prefix}gcc"
4245         _depflags='-MMD'
4246         _cflags_speed='-O3'
4247         _cflags_size='-Os'
4248     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
4249         _type=tms470
4250         _ident=$($_cc -version | head -n1 | tr -s ' ')
4251         _flags='--gcc --abi=eabi -me'
4252         _cc_e='-ppl -fe=$@'
4253         _cc_o='-fe=$@'
4254         _depflags='-ppa -ppd=$(@:.o=.d)'
4255         _cflags_speed='-O3 -mf=5'
4256         _cflags_size='-O3 -mf=2'
4257         _flags_filter=tms470_flags
4258     elif $_cc -v 2>&1 | grep -q clang; then
4259         _type=clang
4260         _ident=$($_cc --version 2>/dev/null | head -n1)
4261         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4262         _cflags_speed='-O3'
4263         _cflags_size='-Oz'
4264     elif $_cc -V 2>&1 | grep -q Sun; then
4265         _type=suncc
4266         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
4267         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
4268         _DEPFLAGS='-xM1 -xc99'
4269         _ldflags='-std=c99'
4270         _cflags_speed='-O5'
4271         _cflags_size='-O5 -xspace'
4272         _flags_filter=suncc_flags
4273     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
4274         _type=pathscale
4275         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4276         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4277         _cflags_speed='-O2'
4278         _cflags_size='-Os'
4279         _flags_filter='filter_out -Wdisabled-optimization'
4280     elif $_cc -v 2>&1 | grep -q Open64; then
4281         _type=open64
4282         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4283         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4284         _cflags_speed='-O2'
4285         _cflags_size='-Os'
4286         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
4287     elif $_cc -V 2>&1 | grep -q Portland; then
4288         _type=pgi
4289         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
4290         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
4291         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
4292         _cflags_size="-O2 -Munroll=c:1 $opt_common"
4293         _cflags_noopt="-O"
4294         _flags_filter=pgi_flags
4295     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
4296         _type=armasm
4297         _ident=$($_cc | head -n1)
4298         # 4509: "This form of conditional instruction is deprecated"
4299         _flags="-nologo -ignore 4509"
4300         _flags_filter=armasm_flags
4301     elif $_cc 2>&1 | grep -q Intel; then
4302         _type=icl
4303         _ident=$($_cc 2>&1 | head -n1)
4304         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
4305         # Not only is O3 broken on 13.x+ but it is slower on all previous
4306         # versions (tested) as well.
4307         _cflags_speed="-O2"
4308         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
4309         if $_cc 2>&1 | grep -q Linker; then
4310             _ld_o='-out:$@'
4311         else
4312             _ld_o='-Fe$@'
4313         fi
4314         _cc_o='-Fo$@'
4315         _cc_e='-P'
4316         _flags_filter=icl_flags
4317         _ld_lib='lib%.a'
4318         _ld_path='-libpath:'
4319         # -Qdiag-error to make icl error when seeing certain unknown arguments
4320         _flags='-nologo -Qdiag-error:4044,10157'
4321         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
4322         # with MSVC which enables it by default.
4323         _cflags='-Qms0 -Qvec- -Qsimd- -GS -fp:precise'
4324         disable stripping
4325     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
4326         # lld can emulate multiple different linkers; in ms link.exe mode,
4327         # the -? parameter gives the help output which contains an identifyable
4328         # string, while it gives an error in other modes.
4329         _type=lld-link
4330         # The link.exe mode doesn't have a switch for getting the version,
4331         # but we can force it back to gnu mode and get the version from there.
4332         _ident=$($_cc -flavor gnu --version 2>/dev/null)
4333         _ld_o='-out:$@'
4334         _flags_filter=msvc_flags
4335         _ld_lib='lib%.a'
4336         _ld_path='-libpath:'
4337     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
4338         _type=msvc
4339         _ident=$($_cc 2>&1 | head -n1)
4340         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
4341         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
4342         _cflags_speed="-O2"
4343         _cflags_size="-O1"
4344         _cflags_noopt="-O1"
4345         if $_cc -nologo- 2>&1 | grep -q Linker; then
4346             _ld_o='-out:$@'
4347         else
4348             _ld_o='-Fe$@'
4349         fi
4350         _cc_o='-Fo$@'
4351         _cc_e='-P -Fi$@'
4352         _flags_filter=msvc_flags
4353         _ld_lib='lib%.a'
4354         _ld_path='-libpath:'
4355         _flags='-nologo'
4356         disable stripping
4357     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
4358         _type=cparser
4359         _ident=$($_cc --version | head -n1)
4360         _depflags='-MMD'
4361         _cflags_speed='-O4'
4362         _cflags_size='-O2'
4363         _flags_filter=cparser_flags
4364     fi
4365
4366     eval ${pfx}_type=\$_type
4367     eval ${pfx}_ident=\$_ident
4368 }
4369
4370 set_ccvars(){
4371     eval ${1}_C=\${_cc_c-\${${1}_C}}
4372     eval ${1}_E=\${_cc_e-\${${1}_E}}
4373     eval ${1}_O=\${_cc_o-\${${1}_O}}
4374
4375     if [ -n "$_depflags" ]; then
4376         eval ${1}_DEPFLAGS=\$_depflags
4377     else
4378         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
4379         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
4380         eval DEP${1}FLAGS=\$_flags
4381     fi
4382 }
4383
4384 probe_cc cc "$cc" "true"
4385 cflags_filter=$_flags_filter
4386 cflags_speed=$_cflags_speed
4387 cflags_size=$_cflags_size
4388 cflags_noopt=$_cflags_noopt
4389 add_cflags $_flags $_cflags
4390 cc_ldflags=$_ldflags
4391 set_ccvars CC
4392 set_ccvars CXX
4393
4394 probe_cc hostcc "$host_cc"
4395 host_cflags_filter=$_flags_filter
4396 host_cflags_speed=$_cflags_speed
4397 add_host_cflags  $_flags $_cflags
4398 set_ccvars HOSTCC
4399
4400 test -n "$cc_type" && enable $cc_type ||
4401     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4402
4403 : ${as_default:=$cc}
4404 : ${objcc_default:=$cc}
4405 : ${dep_cc_default:=$cc}
4406 : ${ld_default:=$cc}
4407 : ${host_ld_default:=$host_cc}
4408 set_default ar as objcc dep_cc ld ln_s host_ld windres
4409
4410 probe_cc as "$as"
4411 asflags_filter=$_flags_filter
4412 add_asflags $_flags $_cflags
4413 set_ccvars AS
4414
4415 probe_cc objcc "$objcc"
4416 objcflags_filter=$_flags_filter
4417 add_objcflags $_flags $_cflags
4418 set_ccvars OBJC
4419
4420 probe_cc ld "$ld"
4421 ldflags_filter=$_flags_filter
4422 add_ldflags $_flags $_ldflags
4423 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4424 LD_O=${_ld_o-$LD_O}
4425 LD_LIB=${_ld_lib-$LD_LIB}
4426 LD_PATH=${_ld_path-$LD_PATH}
4427
4428 probe_cc hostld "$host_ld"
4429 host_ldflags_filter=$_flags_filter
4430 add_host_ldflags $_flags $_ldflags
4431 HOSTLD_O=${_ld_o-$HOSTLD_O}
4432
4433 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4434     probe_cc depcc "$dep_cc"
4435     CCDEP=${_DEPCMD:-$DEPCMD}
4436     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4437     DEPCCFLAGS=$_flags
4438 fi
4439
4440 if $ar 2>&1 | grep -q Microsoft; then
4441     arflags="-nologo"
4442     ar_o='-out:$@'
4443 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
4444     arflags="rq"
4445     ar_o='$@'
4446 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
4447     arflags='-Xany -r -c'
4448     ar_o='$@'
4449 elif $ar 2>&1 | grep -q "\[D\] "; then
4450     arflags="rcD"
4451     ar_o='$@'
4452 else
4453     arflags="rc"
4454     ar_o='$@'
4455 fi
4456
4457 add_cflags $extra_cflags
4458 add_cxxflags $extra_cxxflags
4459 add_objcflags $extra_objcflags
4460 add_asflags $extra_cflags
4461
4462 if test -n "$sysroot"; then
4463     case "$cc_type" in
4464         gcc|llvm_gcc|clang)
4465             add_cppflags --sysroot="$sysroot"
4466             add_ldflags --sysroot="$sysroot"
4467 # On Darwin --sysroot may be ignored, -isysroot always affects headers and linking
4468             add_cppflags -isysroot "$sysroot"
4469             add_ldflags -isysroot "$sysroot"
4470         ;;
4471         tms470)
4472             add_cppflags -I"$sysinclude"
4473             add_ldflags  --sysroot="$sysroot"
4474         ;;
4475     esac
4476 fi
4477
4478 if test "$cpu" = host; then
4479     enabled cross_compile &&
4480         die "--cpu=host makes no sense when cross-compiling."
4481
4482     case "$cc_type" in
4483         gcc|llvm_gcc)
4484             check_native(){
4485                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4486                 sed -n "/cc1.*$1=/{
4487                             s/.*$1=\\([^ ]*\\).*/\\1/
4488                             p
4489                             q
4490                         }" $TMPE
4491             }
4492             cpu=$(check_native -march || check_native -mcpu)
4493         ;;
4494         clang)
4495             check_native(){
4496                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4497                 sed -n "/cc1.*-target-cpu /{
4498                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4499                             p
4500                             q
4501                         }" $TMPE
4502             }
4503             cpu=$(check_native -march)
4504         ;;
4505     esac
4506
4507     test "${cpu:-host}" = host &&
4508         die "--cpu=host not supported with compiler $cc"
4509 fi
4510
4511 # Deal with common $arch aliases
4512 case "$arch" in
4513     aarch64|arm64)
4514         arch="aarch64"
4515     ;;
4516     arm*|iPad*|iPhone*)
4517         arch="arm"
4518     ;;
4519     mips*|IP*)
4520         case "$arch" in
4521         *el)
4522             add_cppflags -EL
4523             add_ldflags -EL
4524         ;;
4525         *eb)
4526             add_cppflags -EB
4527             add_ldflags -EB
4528         ;;
4529         esac
4530         arch="mips"
4531     ;;
4532     parisc*|hppa*)
4533         arch="parisc"
4534     ;;
4535     "Power Macintosh"|ppc*|powerpc*)
4536         arch="ppc"
4537     ;;
4538     s390|s390x)
4539         arch="s390"
4540     ;;
4541     sh4|sh)
4542         arch="sh4"
4543     ;;
4544     sun4*|sparc*)
4545         arch="sparc"
4546     ;;
4547     tilegx|tile-gx)
4548         arch="tilegx"
4549     ;;
4550     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4551         arch="x86"
4552     ;;
4553 esac
4554
4555 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4556 enable $arch
4557
4558 # Add processor-specific flags
4559 if enabled aarch64; then
4560
4561     case $cpu in
4562         armv*)
4563             cpuflags="-march=$cpu"
4564         ;;
4565         *)
4566             cpuflags="-mcpu=$cpu"
4567         ;;
4568     esac
4569
4570 elif enabled alpha; then
4571
4572     cpuflags="-mcpu=$cpu"
4573
4574 elif enabled arm; then
4575
4576     check_arm_arch() {
4577         check_cpp_condition stddef.h \
4578             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4579             $cpuflags
4580     }
4581
4582     probe_arm_arch() {
4583         if   check_arm_arch 4;        then echo armv4
4584         elif check_arm_arch 4T;       then echo armv4t
4585         elif check_arm_arch 5;        then echo armv5
4586         elif check_arm_arch 5E;       then echo armv5e
4587         elif check_arm_arch 5T;       then echo armv5t
4588         elif check_arm_arch 5TE;      then echo armv5te
4589         elif check_arm_arch 5TEJ;     then echo armv5te
4590         elif check_arm_arch 6;        then echo armv6
4591         elif check_arm_arch 6J;       then echo armv6j
4592         elif check_arm_arch 6K;       then echo armv6k
4593         elif check_arm_arch 6Z;       then echo armv6z
4594         elif check_arm_arch 6ZK;      then echo armv6zk
4595         elif check_arm_arch 6T2;      then echo armv6t2
4596         elif check_arm_arch 7;        then echo armv7
4597         elif check_arm_arch 7A  7_A;  then echo armv7-a
4598         elif check_arm_arch 7S;       then echo armv7-a
4599         elif check_arm_arch 7R  7_R;  then echo armv7-r
4600         elif check_arm_arch 7M  7_M;  then echo armv7-m
4601         elif check_arm_arch 7EM 7E_M; then echo armv7-m
4602         elif check_arm_arch 8A  8_A;  then echo armv8-a
4603         fi
4604     }
4605
4606     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4607
4608     case $cpu in
4609         armv*)
4610             cpuflags="-march=$cpu"
4611             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4612         ;;
4613         *)
4614             cpuflags="-mcpu=$cpu"
4615             case $cpu in
4616                 cortex-a*)                               subarch=armv7a  ;;
4617                 cortex-r*)                               subarch=armv7r  ;;
4618                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4619                 arm11*)                                  subarch=armv6   ;;
4620                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4621                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4622                 *)                             subarch=$(probe_arm_arch) ;;
4623             esac
4624         ;;
4625     esac
4626
4627     case "$subarch" in
4628         armv5t*)    enable fast_clz                ;;
4629         armv[6-8]*)
4630             enable fast_clz
4631             disabled fast_unaligned || enable fast_unaligned
4632             ;;
4633     esac
4634
4635 elif enabled avr32; then
4636
4637     case $cpu in
4638         ap7[02]0[0-2])
4639             subarch="avr32_ap"
4640             cpuflags="-mpart=$cpu"
4641         ;;
4642         ap)
4643             subarch="avr32_ap"
4644             cpuflags="-march=$cpu"
4645         ;;
4646         uc3[ab]*)
4647             subarch="avr32_uc"
4648             cpuflags="-mcpu=$cpu"
4649         ;;
4650         uc)
4651             subarch="avr32_uc"
4652             cpuflags="-march=$cpu"
4653         ;;
4654     esac
4655
4656 elif enabled bfin; then
4657
4658     cpuflags="-mcpu=$cpu"
4659
4660 elif enabled mips; then
4661
4662     cpuflags="-march=$cpu"
4663
4664     if [ "$cpu" != "generic" ]; then
4665         disable mips32r2
4666         disable mips32r5
4667         disable mips64r2
4668         disable mips32r6
4669         disable mips64r6
4670         disable loongson2
4671         disable loongson3
4672
4673         case $cpu in
4674             24kc|24kf*|24kec|34kc|1004kc|24kef*|34kf*|1004kf*|74kc|74kf)
4675                 enable mips32r2
4676                 disable msa
4677             ;;
4678             p5600|i6400|p6600)
4679                 disable mipsdsp
4680                 disable mipsdspr2
4681             ;;
4682             loongson*)
4683                 enable loongson2
4684                 enable loongson3
4685                 enable local_aligned_8 local_aligned_16 local_aligned_32
4686                 enable simd_align_16
4687                 enable fast_64bit
4688                 enable fast_clz
4689                 enable fast_cmov
4690                 enable fast_unaligned
4691                 disable aligned_stack
4692                 disable mipsfpu
4693                 disable mipsdsp
4694                 disable mipsdspr2
4695                 case $cpu in
4696                     loongson3*)
4697                         cpuflags="-march=loongson3a -mhard-float -fno-expensive-optimizations"
4698                     ;;
4699                     loongson2e)
4700                         cpuflags="-march=loongson2e -mhard-float -fno-expensive-optimizations"
4701                     ;;
4702                     loongson2f)
4703                         cpuflags="-march=loongson2f -mhard-float -fno-expensive-optimizations"
4704                     ;;
4705                 esac
4706             ;;
4707             *)
4708                 # Unknown CPU. Disable everything.
4709                 warn "unknown CPU. Disabling all MIPS optimizations."
4710                 disable mipsfpu
4711                 disable mipsdsp
4712                 disable mipsdspr2
4713                 disable msa
4714                 disable mmi
4715             ;;
4716         esac
4717
4718         case $cpu in
4719             24kc)
4720                 disable mipsfpu
4721                 disable mipsdsp
4722                 disable mipsdspr2
4723             ;;
4724             24kf*)
4725                 disable mipsdsp
4726                 disable mipsdspr2
4727             ;;
4728             24kec|34kc|1004kc)
4729                 disable mipsfpu
4730                 disable mipsdspr2
4731             ;;
4732             24kef*|34kf*|1004kf*)
4733                 disable mipsdspr2
4734             ;;
4735             74kc)
4736                 disable mipsfpu
4737             ;;
4738             p5600)
4739                 enable mips32r5
4740                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
4741             ;;
4742             i6400)
4743                 enable mips64r6
4744                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4745             ;;
4746             p6600)
4747                 enable mips64r6
4748                 check_cflags "-mtune=p6600 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4749             ;;
4750         esac
4751     else
4752         # We do not disable anything. Is up to the user to disable the unwanted features.
4753         warn 'generic cpu selected'
4754     fi
4755
4756 elif enabled ppc; then
4757
4758     disable ldbrx
4759
4760     case $(tolower $cpu) in
4761         601|ppc601|powerpc601)
4762             cpuflags="-mcpu=601"
4763             disable altivec
4764         ;;
4765         603*|ppc603*|powerpc603*)
4766             cpuflags="-mcpu=603"
4767             disable altivec
4768         ;;
4769         604*|ppc604*|powerpc604*)
4770             cpuflags="-mcpu=604"
4771             disable altivec
4772         ;;
4773         g3|75*|ppc75*|powerpc75*)
4774             cpuflags="-mcpu=750"
4775             disable altivec
4776         ;;
4777         g4|745*|ppc745*|powerpc745*)
4778             cpuflags="-mcpu=7450"
4779             disable vsx
4780         ;;
4781         74*|ppc74*|powerpc74*)
4782             cpuflags="-mcpu=7400"
4783             disable vsx
4784         ;;
4785         g5|970|ppc970|powerpc970)
4786             cpuflags="-mcpu=970"
4787             disable vsx
4788         ;;
4789         power[3-6]*)
4790             cpuflags="-mcpu=$cpu"
4791             disable vsx
4792         ;;
4793         power[7-8]*)
4794             cpuflags="-mcpu=$cpu"
4795         ;;
4796         cell)
4797             cpuflags="-mcpu=cell"
4798             enable ldbrx
4799             disable vsx
4800         ;;
4801         e500mc)
4802             cpuflags="-mcpu=e500mc"
4803             disable altivec
4804         ;;
4805         e500v2)
4806             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
4807             disable altivec
4808             disable dcbzl
4809         ;;
4810         e500)
4811             cpuflags="-mcpu=8540 -mhard-float"
4812             disable altivec
4813             disable dcbzl
4814         ;;
4815     esac
4816
4817 elif enabled sparc; then
4818
4819     case $cpu in
4820         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
4821             cpuflags="-mcpu=$cpu"
4822         ;;
4823         ultrasparc*|niagara[234])
4824             cpuflags="-mcpu=$cpu"
4825         ;;
4826     esac
4827
4828 elif enabled x86; then
4829
4830     case $cpu in
4831         i[345]86|pentium)
4832             cpuflags="-march=$cpu"
4833             disable i686
4834             disable mmx
4835         ;;
4836         # targets that do NOT support nopl and conditional mov (cmov)
4837         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
4838             cpuflags="-march=$cpu"
4839             disable i686
4840         ;;
4841         # targets that do support nopl and conditional mov (cmov)
4842         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
4843         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|skylake*|knl\
4844         |amdfam10|barcelona|b[dt]ver*|znver*)
4845             cpuflags="-march=$cpu"
4846             enable i686
4847             enable fast_cmov
4848         ;;
4849         # targets that do support conditional mov but on which it's slow
4850         pentium4|pentium4m|prescott|nocona)
4851             cpuflags="-march=$cpu"
4852             enable i686
4853             disable fast_cmov
4854         ;;
4855     esac
4856
4857 fi
4858
4859 if [ "$cpu" != generic ]; then
4860     add_cflags  $cpuflags
4861     add_asflags $cpuflags
4862     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
4863 fi
4864
4865 # compiler sanity check
4866 check_exec <<EOF
4867 int main(void){ return 0; }
4868 EOF
4869 if test "$?" != 0; then
4870     echo "$cc is unable to create an executable file."
4871     if test -z "$cross_prefix" && ! enabled cross_compile ; then
4872         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
4873         echo "Only do this if you know what cross compiling means."
4874     fi
4875     die "C compiler test failed."
4876 fi
4877
4878 add_cppflags -D_ISOC99_SOURCE
4879 add_cxxflags -D__STDC_CONSTANT_MACROS
4880 check_cxxflags -std=c++11 || check_cxxflags -std=c++0x
4881
4882 # some compilers silently accept -std=c11, so we also need to check that the
4883 # version macro is defined properly
4884 test_cflags_cc -std=c11 ctype.h "__STDC_VERSION__ >= 201112L" &&
4885     add_cflags -std=c11 ||
4886     check_cflags -std=c99
4887
4888 check_cppflags -D_FILE_OFFSET_BITS=64
4889 check_cppflags -D_LARGEFILE_SOURCE
4890
4891 add_host_cppflags -D_ISOC99_SOURCE
4892 check_host_cflags -std=c99
4893 check_host_cflags -Wall
4894 check_host_cflags $host_cflags_speed
4895
4896 check_64bit(){
4897     arch32=$1
4898     arch64=$2
4899     expr=$3
4900     check_code cc "" "int test[2*($expr) - 1]" &&
4901         subarch=$arch64 || subarch=$arch32
4902 }
4903
4904 case "$arch" in
4905     aarch64|alpha|ia64)
4906         spic=$shared
4907     ;;
4908     mips)
4909         check_64bit mips mips64 '_MIPS_SIM > 1'
4910         spic=$shared
4911     ;;
4912     parisc)
4913         check_64bit parisc parisc64 'sizeof(void *) > 4'
4914         spic=$shared
4915     ;;
4916     ppc)
4917         check_64bit ppc ppc64 'sizeof(void *) > 4'
4918         spic=$shared
4919     ;;
4920     s390)
4921         check_64bit s390 s390x 'sizeof(void *) > 4'
4922