Merge commit 'accb06120c13a4ead442464d96f2fa318fa07a4e'
[ffmpeg.git] / configure
1 #!/bin/sh
2 #
3 # FFmpeg configure script
4 #
5 # Copyright (c) 2000-2002 Fabrice Bellard
6 # Copyright (c) 2005-2008 Diego Biurrun
7 # Copyright (c) 2005-2008 Mans Rullgard
8 #
9
10 # Prevent locale nonsense from breaking basic text processing.
11 LC_ALL=C
12 export LC_ALL
13
14 # make sure we are running under a compatible shell
15 # try to make this part work with most shells
16
17 try_exec(){
18     echo "Trying shell $1"
19     type "$1" > /dev/null 2>&1 && exec "$@"
20 }
21
22 unset foo
23 (: ${foo%%bar}) 2> /dev/null
24 E1="$?"
25
26 (: ${foo?}) 2> /dev/null
27 E2="$?"
28
29 if test "$E1" != 0 || test "$E2" = 0; then
30     echo "Broken shell detected.  Trying alternatives."
31     export FF_CONF_EXEC
32     if test "0$FF_CONF_EXEC" -lt 1; then
33         FF_CONF_EXEC=1
34         try_exec bash "$0" "$@"
35     fi
36     if test "0$FF_CONF_EXEC" -lt 2; then
37         FF_CONF_EXEC=2
38         try_exec ksh "$0" "$@"
39     fi
40     if test "0$FF_CONF_EXEC" -lt 3; then
41         FF_CONF_EXEC=3
42         try_exec /usr/xpg4/bin/sh "$0" "$@"
43     fi
44     echo "No compatible shell script interpreter found."
45     echo "This configure script requires a POSIX-compatible shell"
46     echo "such as bash or ksh."
47     echo "THIS IS NOT A BUG IN FFMPEG, DO NOT REPORT IT AS SUCH."
48     echo "Instead, install a working POSIX-compatible shell."
49     echo "Disabling this configure test will create a broken FFmpeg."
50     if test "$BASH_VERSION" = '2.04.0(1)-release'; then
51         echo "This bash version ($BASH_VERSION) is broken on your platform."
52         echo "Upgrade to a later version if available."
53     fi
54     exit 1
55 fi
56
57 test -d /usr/xpg4/bin && PATH=/usr/xpg4/bin:$PATH
58
59 show_help(){
60     cat <<EOF
61 Usage: configure [options]
62 Options: [defaults in brackets after descriptions]
63
64 Help options:
65   --help                   print this message
66   --quiet                  Suppress showing informative output
67   --list-decoders          show all available decoders
68   --list-encoders          show all available encoders
69   --list-hwaccels          show all available hardware accelerators
70   --list-demuxers          show all available demuxers
71   --list-muxers            show all available muxers
72   --list-parsers           show all available parsers
73   --list-protocols         show all available protocols
74   --list-bsfs              show all available bitstream filters
75   --list-indevs            show all available input devices
76   --list-outdevs           show all available output devices
77   --list-filters           show all available filters
78
79 Standard options:
80   --logfile=FILE           log tests and output to FILE [ffbuild/config.log]
81   --disable-logging        do not log configure debug information
82   --fatal-warnings         fail if any configure warning is generated
83   --prefix=PREFIX          install in PREFIX [$prefix_default]
84   --bindir=DIR             install binaries in DIR [PREFIX/bin]
85   --datadir=DIR            install data files in DIR [PREFIX/share/ffmpeg]
86   --docdir=DIR             install documentation in DIR [PREFIX/share/doc/ffmpeg]
87   --libdir=DIR             install libs in DIR [PREFIX/lib]
88   --shlibdir=DIR           install shared libs in DIR [LIBDIR]
89   --incdir=DIR             install includes in DIR [PREFIX/include]
90   --mandir=DIR             install man page in DIR [PREFIX/share/man]
91   --pkgconfigdir=DIR       install pkg-config files in DIR [LIBDIR/pkgconfig]
92   --enable-rpath           use rpath to allow installing libraries in paths
93                            not part of the dynamic linker search path
94                            use rpath when linking programs (USE WITH CARE)
95   --install-name-dir=DIR   Darwin directory name for installed targets
96
97 Licensing options:
98   --enable-gpl             allow use of GPL code, the resulting libs
99                            and binaries will be under GPL [no]
100   --enable-version3        upgrade (L)GPL to version 3 [no]
101   --enable-nonfree         allow use of nonfree code, the resulting libs
102                            and binaries will be unredistributable [no]
103
104 Configuration options:
105   --disable-static         do not build static libraries [no]
106   --enable-shared          build shared libraries [no]
107   --enable-small           optimize for size instead of speed
108   --disable-runtime-cpudetect disable detecting CPU capabilities at runtime (smaller binary)
109   --enable-gray            enable full grayscale support (slower color)
110   --disable-swscale-alpha  disable alpha channel support in swscale
111   --disable-all            disable building components, libraries and programs
112   --disable-autodetect     disable automatically detected external libraries [no]
113
114 Program options:
115   --disable-programs       do not build command line programs
116   --disable-ffmpeg         disable ffmpeg build
117   --disable-ffplay         disable ffplay build
118   --disable-ffprobe        disable ffprobe build
119   --disable-ffserver       disable ffserver build
120
121 Documentation options:
122   --disable-doc            do not build documentation
123   --disable-htmlpages      do not build HTML documentation pages
124   --disable-manpages       do not build man documentation pages
125   --disable-podpages       do not build POD documentation pages
126   --disable-txtpages       do not build text documentation pages
127
128 Component options:
129   --disable-avdevice       disable libavdevice build
130   --disable-avcodec        disable libavcodec build
131   --disable-avformat       disable libavformat build
132   --disable-swresample     disable libswresample build
133   --disable-swscale        disable libswscale build
134   --disable-postproc       disable libpostproc build
135   --disable-avfilter       disable libavfilter build
136   --enable-avresample      enable libavresample build [no]
137   --disable-pthreads       disable pthreads [autodetect]
138   --disable-w32threads     disable Win32 threads [autodetect]
139   --disable-os2threads     disable OS/2 threads [autodetect]
140   --disable-network        disable network support [no]
141   --disable-dct            disable DCT code
142   --disable-dwt            disable DWT code
143   --disable-error-resilience disable error resilience code
144   --disable-lsp            disable LSP code
145   --disable-lzo            disable LZO decoder code
146   --disable-mdct           disable MDCT code
147   --disable-rdft           disable RDFT code
148   --disable-fft            disable FFT code
149   --disable-faan           disable floating point AAN (I)DCT code
150   --disable-pixelutils     disable pixel utils in libavutil
151
152 Individual component options:
153   --disable-everything     disable all components listed below
154   --disable-encoder=NAME   disable encoder NAME
155   --enable-encoder=NAME    enable encoder NAME
156   --disable-encoders       disable all encoders
157   --disable-decoder=NAME   disable decoder NAME
158   --enable-decoder=NAME    enable decoder NAME
159   --disable-decoders       disable all decoders
160   --disable-hwaccel=NAME   disable hwaccel NAME
161   --enable-hwaccel=NAME    enable hwaccel NAME
162   --disable-hwaccels       disable all hwaccels
163   --disable-muxer=NAME     disable muxer NAME
164   --enable-muxer=NAME      enable muxer NAME
165   --disable-muxers         disable all muxers
166   --disable-demuxer=NAME   disable demuxer NAME
167   --enable-demuxer=NAME    enable demuxer NAME
168   --disable-demuxers       disable all demuxers
169   --enable-parser=NAME     enable parser NAME
170   --disable-parser=NAME    disable parser NAME
171   --disable-parsers        disable all parsers
172   --enable-bsf=NAME        enable bitstream filter NAME
173   --disable-bsf=NAME       disable bitstream filter NAME
174   --disable-bsfs           disable all bitstream filters
175   --enable-protocol=NAME   enable protocol NAME
176   --disable-protocol=NAME  disable protocol NAME
177   --disable-protocols      disable all protocols
178   --enable-indev=NAME      enable input device NAME
179   --disable-indev=NAME     disable input device NAME
180   --disable-indevs         disable input devices
181   --enable-outdev=NAME     enable output device NAME
182   --disable-outdev=NAME    disable output device NAME
183   --disable-outdevs        disable output devices
184   --disable-devices        disable all devices
185   --enable-filter=NAME     enable filter NAME
186   --disable-filter=NAME    disable filter NAME
187   --disable-filters        disable all filters
188   --disable-v4l2_m2m       disable V4L2 mem2mem code [autodetect]
189
190 External library support:
191
192   Using any of the following switches will allow FFmpeg to link to the
193   corresponding external library. All the components depending on that library
194   will become enabled, if all their other dependencies are met and they are not
195   explicitly disabled. E.g. --enable-libwavpack will enable linking to
196   libwavpack and allow the libwavpack encoder to be built, unless it is
197   specifically disabled with --disable-encoder=libwavpack.
198
199   Note that only the system libraries are auto-detected. All the other external
200   libraries must be explicitly enabled.
201
202   Also note that the following help text describes the purpose of the libraries
203   themselves, not all their features will necessarily be usable by FFmpeg.
204
205   --disable-alsa           disable ALSA support [autodetect]
206   --disable-appkit         disable Apple AppKit framework [autodetect]
207   --disable-avfoundation   disable Apple AVFoundation framework [autodetect]
208   --enable-avisynth        enable reading of AviSynth script files [no]
209   --disable-bzlib          disable bzlib [autodetect]
210   --disable-coreimage      disable Apple CoreImage framework [autodetect]
211   --enable-chromaprint     enable audio fingerprinting with chromaprint [no]
212   --enable-frei0r          enable frei0r video filtering [no]
213   --enable-gcrypt          enable gcrypt, needed for rtmp(t)e support
214                            if openssl, librtmp or gmp is not used [no]
215   --enable-gmp             enable gmp, needed for rtmp(t)e support
216                            if openssl or librtmp is not used [no]
217   --enable-gnutls          enable gnutls, needed for https support
218                            if openssl is not used [no]
219   --disable-iconv          disable iconv [autodetect]
220   --enable-jni             enable JNI support [no]
221   --enable-ladspa          enable LADSPA audio filtering [no]
222   --enable-libass          enable libass subtitles rendering,
223                            needed for subtitles and ass filter [no]
224   --enable-libbluray       enable BluRay reading using libbluray [no]
225   --enable-libbs2b         enable bs2b DSP library [no]
226   --enable-libcaca         enable textual display using libcaca [no]
227   --enable-libcelt         enable CELT decoding via libcelt [no]
228   --enable-libcdio         enable audio CD grabbing with libcdio [no]
229   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
230                            and libraw1394 [no]
231   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
232   --enable-libflite        enable flite (voice synthesis) support via libflite [no]
233   --enable-libfontconfig   enable libfontconfig, useful for drawtext filter [no]
234   --enable-libfreetype     enable libfreetype, needed for drawtext filter [no]
235   --enable-libfribidi      enable libfribidi, improves drawtext filter [no]
236   --enable-libgme          enable Game Music Emu via libgme [no]
237   --enable-libgsm          enable GSM de/encoding via libgsm [no]
238   --enable-libiec61883     enable iec61883 via libiec61883 [no]
239   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
240   --enable-libjack         enable JACK audio sound server [no]
241   --enable-libkvazaar      enable HEVC encoding via libkvazaar [no]
242   --enable-libmodplug      enable ModPlug via libmodplug [no]
243   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
244   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
245   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
246   --enable-libopencv       enable video filtering via libopencv [no]
247   --enable-libopenh264     enable H.264 encoding via OpenH264 [no]
248   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
249   --enable-libopenmpt      enable decoding tracked files via libopenmpt [no]
250   --enable-libopus         enable Opus de/encoding via libopus [no]
251   --enable-libpulse        enable Pulseaudio input via libpulse [no]
252   --enable-librsvg         enable SVG rasterization via librsvg [no]
253   --enable-librubberband   enable rubberband needed for rubberband filter [no]
254   --enable-librtmp         enable RTMP[E] support via librtmp [no]
255   --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
256   --enable-libsmbclient    enable Samba protocol via libsmbclient [no]
257   --enable-libsnappy       enable Snappy compression, needed for hap encoding [no]
258   --enable-libsoxr         enable Include libsoxr resampling [no]
259   --enable-libspeex        enable Speex de/encoding via libspeex [no]
260   --enable-libssh          enable SFTP protocol via libssh [no]
261   --enable-libtesseract    enable Tesseract, needed for ocr filter [no]
262   --enable-libtheora       enable Theora encoding via libtheora [no]
263   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
264   --enable-libv4l2         enable libv4l2/v4l-utils [no]
265   --enable-libvidstab      enable video stabilization using vid.stab [no]
266   --enable-libvmaf         enable vmaf filter via libvmaf [no]
267   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
268   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
269                            native implementation exists [no]
270   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
271   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
272   --enable-libwebp         enable WebP encoding via libwebp [no]
273   --enable-libx264         enable H.264 encoding via x264 [no]
274   --enable-libx265         enable HEVC encoding via x265 [no]
275   --enable-libxavs         enable AVS encoding via xavs [no]
276   --enable-libxcb          enable X11 grabbing using XCB [autodetect]
277   --enable-libxcb-shm      enable X11 grabbing shm communication [autodetect]
278   --enable-libxcb-xfixes   enable X11 grabbing mouse rendering [autodetect]
279   --enable-libxcb-shape    enable X11 grabbing shape rendering [autodetect]
280   --enable-libxvid         enable Xvid encoding via xvidcore,
281                            native MPEG-4/Xvid encoder exists [no]
282   --enable-libxml2         enable XML parsing using the C library libxml2 [no]
283   --enable-libzimg         enable z.lib, needed for zscale filter [no]
284   --enable-libzmq          enable message passing via libzmq [no]
285   --enable-libzvbi         enable teletext support via libzvbi [no]
286   --disable-lzma           disable lzma [autodetect]
287   --enable-decklink        enable Blackmagic DeckLink I/O support [no]
288   --enable-libndi_newtek   enable Newteck NDI I/O support [no]
289   --enable-mediacodec      enable Android MediaCodec support [no]
290   --enable-libmysofa       enable libmysofa, needed for sofalizer filter [no]
291   --enable-openal          enable OpenAL 1.1 capture support [no]
292   --enable-opencl          enable OpenCL code
293   --enable-opengl          enable OpenGL rendering [no]
294   --enable-openssl         enable openssl, needed for https support
295                            if gnutls is not used [no]
296   --disable-sndio          disable sndio support [autodetect]
297   --disable-schannel       disable SChannel SSP, needed for TLS support on
298                            Windows if openssl and gnutls are not used [autodetect]
299   --disable-sdl2           disable sdl2 [autodetect]
300   --disable-securetransport disable Secure Transport, needed for TLS support
301                            on OSX if openssl and gnutls are not used [autodetect]
302   --disable-xlib           disable xlib [autodetect]
303   --disable-zlib           disable zlib [autodetect]
304
305   The following libraries provide various hardware acceleration features:
306   --disable-audiotoolbox   disable Apple AudioToolbox code [autodetect]
307   --disable-cuda           disable dynamically linked Nvidia CUDA code [autodetect]
308   --enable-cuda-sdk        enable CUDA features that require the CUDA SDK [no]
309   --disable-cuvid          disable Nvidia CUVID support [autodetect]
310   --disable-d3d11va        disable Microsoft Direct3D 11 video acceleration code [autodetect]
311   --disable-dxva2          disable Microsoft DirectX 9 video acceleration code [autodetect]
312   --enable-libdrm          enable DRM code (Linux) [no]
313   --enable-libmfx          enable Intel MediaSDK (AKA Quick Sync Video) code via libmfx [no]
314   --enable-libnpp          enable Nvidia Performance Primitives-based code [no]
315   --enable-mmal            enable Broadcom Multi-Media Abstraction Layer (Raspberry Pi) via MMAL [no]
316   --disable-nvdec          disable Nvidia video decoding acceleration (via hwaccel) [autodetect]
317   --disable-nvenc          disable Nvidia video encoding code [autodetect]
318   --enable-omx             enable OpenMAX IL code [no]
319   --enable-omx-rpi         enable OpenMAX IL code for Raspberry Pi [no]
320   --enable-rkmpp           enable Rockchip Media Process Platform code [no]
321   --disable-vaapi          disable Video Acceleration API (mainly Unix/Intel) code [autodetect]
322   --disable-vdpau          disable Nvidia Video Decode and Presentation API for Unix code [autodetect]
323   --disable-videotoolbox   disable VideoToolbox code [autodetect]
324
325 Toolchain options:
326   --arch=ARCH              select architecture [$arch]
327   --cpu=CPU                select the minimum required CPU (affects
328                            instruction selection, may crash on older CPUs)
329   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
330   --progs-suffix=SUFFIX    program name suffix []
331   --enable-cross-compile   assume a cross-compiler is used
332   --sysroot=PATH           root of cross-build tree
333   --sysinclude=PATH        location of cross-build system headers
334   --target-os=OS           compiler targets OS [$target_os]
335   --target-exec=CMD        command to run executables on target
336   --target-path=DIR        path to view of build directory on target
337   --target-samples=DIR     path to samples directory on target
338   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
339   --toolchain=NAME         set tool defaults according to NAME
340   --nm=NM                  use nm tool NM [$nm_default]
341   --ar=AR                  use archive tool AR [$ar_default]
342   --as=AS                  use assembler AS [$as_default]
343   --ln_s=LN_S              use symbolic link tool LN_S [$ln_s_default]
344   --strip=STRIP            use strip tool STRIP [$strip_default]
345   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
346   --x86asmexe=EXE          use nasm-compatible assembler EXE [$x86asmexe_default]
347   --cc=CC                  use C compiler CC [$cc_default]
348   --cxx=CXX                use C compiler CXX [$cxx_default]
349   --objcc=OCC              use ObjC compiler OCC [$cc_default]
350   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
351   --nvcc=NVCC              use Nvidia CUDA compiler NVCC [$nvcc_default]
352   --ld=LD                  use linker LD [$ld_default]
353   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
354   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
355   --ranlib=RANLIB          use ranlib RANLIB [$ranlib_default]
356   --doxygen=DOXYGEN        use DOXYGEN to generate API doc [$doxygen_default]
357   --host-cc=HOSTCC         use host C compiler HOSTCC
358   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
359   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
360   --host-ld=HOSTLD         use host linker HOSTLD
361   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
362   --host-libs=HLIBS        use libs HLIBS when linking for host
363   --host-os=OS             compiler host OS [$target_os]
364   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
365   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
366   --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
367   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
368   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
369   --extra-ldsoflags=ELDFLAGS add ELDFLAGS to LDSOFLAGS [$LDSOFLAGS]
370   --extra-libs=ELIBS       add ELIBS [$ELIBS]
371   --extra-version=STRING   version string suffix []
372   --optflags=OPTFLAGS      override optimization-related compiler flags
373   --nvccflags=NVCCFLAGS    override nvcc flags [$nvccflags_default]
374   --build-suffix=SUFFIX    library name suffix []
375   --enable-pic             build position-independent code
376   --enable-thumb           compile for Thumb instruction set
377   --enable-lto             use link-time optimization
378   --env="ENV=override"     override the environment variables
379
380 Advanced options (experts only):
381   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
382   --custom-allocator=NAME  use a supported custom allocator
383   --disable-symver         disable symbol versioning
384   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
385   --disable-safe-bitstream-reader
386                            disable buffer boundary checking in bitreaders
387                            (faster, but may crash)
388   --sws-max-filter-size=N  the max filter size swscale uses [$sws_max_filter_size_default]
389
390 Optimization options (experts only):
391   --disable-asm            disable all assembly optimizations
392   --disable-altivec        disable AltiVec optimizations
393   --disable-vsx            disable VSX optimizations
394   --disable-power8         disable POWER8 optimizations
395   --disable-amd3dnow       disable 3DNow! optimizations
396   --disable-amd3dnowext    disable 3DNow! extended optimizations
397   --disable-mmx            disable MMX optimizations
398   --disable-mmxext         disable MMXEXT optimizations
399   --disable-sse            disable SSE optimizations
400   --disable-sse2           disable SSE2 optimizations
401   --disable-sse3           disable SSE3 optimizations
402   --disable-ssse3          disable SSSE3 optimizations
403   --disable-sse4           disable SSE4 optimizations
404   --disable-sse42          disable SSE4.2 optimizations
405   --disable-avx            disable AVX optimizations
406   --disable-xop            disable XOP optimizations
407   --disable-fma3           disable FMA3 optimizations
408   --disable-fma4           disable FMA4 optimizations
409   --disable-avx2           disable AVX2 optimizations
410   --disable-aesni          disable AESNI optimizations
411   --disable-armv5te        disable armv5te optimizations
412   --disable-armv6          disable armv6 optimizations
413   --disable-armv6t2        disable armv6t2 optimizations
414   --disable-vfp            disable VFP optimizations
415   --disable-neon           disable NEON optimizations
416   --disable-inline-asm     disable use of inline assembly
417   --disable-x86asm         disable use of standalone x86 assembly
418   --disable-mipsdsp        disable MIPS DSP ASE R1 optimizations
419   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
420   --disable-msa            disable MSA optimizations
421   --disable-mipsfpu        disable floating point MIPS optimizations
422   --disable-mmi            disable Loongson SIMD optimizations
423   --disable-fast-unaligned consider unaligned accesses slow
424
425 Developer options (useful when working on FFmpeg itself):
426   --disable-debug          disable debugging symbols
427   --enable-debug=LEVEL     set the debug level [$debuglevel]
428   --disable-optimizations  disable compiler optimizations
429   --enable-extra-warnings  enable more compiler warnings
430   --disable-stripping      disable stripping of executables and shared libraries
431   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
432                            2 causes a slowdown at runtime.
433   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
434   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
435                            leaks and errors, using the specified valgrind binary.
436                            Cannot be combined with --target-exec
437   --enable-ftrapv          Trap arithmetic overflows
438   --samples=PATH           location of test samples for FATE, if not set use
439                            \$FATE_SAMPLES at make invocation time.
440   --enable-neon-clobber-test check NEON registers for clobbering (should be
441                            used only for debugging purposes)
442   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
443                            should be used only for debugging purposes)
444   --enable-random          randomly enable/disable components
445   --disable-random
446   --enable-random=LIST     randomly enable/disable specific components or
447   --disable-random=LIST    component groups. LIST is a comma-separated list
448                            of NAME[:PROB] entries where NAME is a component
449                            (group) and PROB the probability associated with
450                            NAME (default 0.5).
451   --random-seed=VALUE      seed value for --enable/disable-random
452   --disable-valgrind-backtrace do not print a backtrace under Valgrind
453                            (only applies to --disable-optimizations builds)
454   --enable-osfuzz          Enable building fuzzer tool
455   --libfuzzer=PATH         path to libfuzzer
456   --ignore-tests=TESTS     comma-separated list (without "fate-" prefix
457                            in the name) of tests whose result is ignored
458   --enable-linux-perf      enable Linux Performance Monitor API
459
460 NOTE: Object files are built at the place where configure is launched.
461 EOF
462   exit 0
463 }
464
465 quotes='""'
466 if test -t 1 && which tput >/dev/null 2>&1; then
467     ncolors=$(tput colors)
468     if test -n "$ncolors" && test $ncolors -ge 8; then
469         bold_color=$(tput bold)
470         warn_color=$(tput setaf 3)
471         error_color=$(tput setaf 1)
472         reset_color=$(tput sgr0)
473     fi
474     # 72 used instead of 80 since that's the default of pr
475     ncols=$(tput cols)
476 fi
477 : ${ncols:=72}
478
479 log(){
480     echo "$@" >> $logfile
481 }
482
483 log_file(){
484     log BEGIN $1
485     pr -n -t $1 >> $logfile
486     log END $1
487 }
488
489 warn(){
490     log "WARNING: $*"
491     WARNINGS="${WARNINGS}WARNING: $*\n"
492 }
493
494 die(){
495     log "$@"
496     echo "$error_color$bold_color$@$reset_color"
497     cat <<EOF
498
499 If you think configure made a mistake, make sure you are using the latest
500 version from Git.  If the latest version fails, report the problem to the
501 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
502 EOF
503     if disabled logging; then
504         cat <<EOF
505 Rerun configure with logging enabled (do not use --disable-logging), and
506 include the log this produces with your report.
507 EOF
508     else
509         cat <<EOF
510 Include the log file "$logfile" produced by configure as this will help
511 solve the problem.
512 EOF
513     fi
514     exit 1
515 }
516
517 # Avoid locale weirdness, besides we really just want to translate ASCII.
518 toupper(){
519     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
520 }
521
522 tolower(){
523     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
524 }
525
526 c_escape(){
527     echo "$*" | sed 's/["\\]/\\\0/g'
528 }
529
530 sh_quote(){
531     v=$(echo "$1" | sed "s/'/'\\\\''/g")
532     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
533     echo "$v"
534 }
535
536 cleanws(){
537     echo "$@" | sed 's/^ *//;s/[[:space:]][[:space:]]*/ /g;s/ *$//'
538 }
539
540 filter(){
541     pat=$1
542     shift
543     for v; do
544         eval "case '$v' in $pat) printf '%s ' '$v' ;; esac"
545     done
546 }
547
548 filter_out(){
549     pat=$1
550     shift
551     for v; do
552         eval "case '$v' in $pat) ;; *) printf '%s ' '$v' ;; esac"
553     done
554 }
555
556 map(){
557     m=$1
558     shift
559     for v; do eval $m; done
560 }
561
562 add_suffix(){
563     suffix=$1
564     shift
565     for v; do echo ${v}${suffix}; done
566 }
567
568 set_all(){
569     value=$1
570     shift
571     for var in $*; do
572         eval $var=$value
573     done
574 }
575
576 set_weak(){
577     value=$1
578     shift
579     for var; do
580         eval : \${$var:=$value}
581     done
582 }
583
584 sanitize_var_name(){
585     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
586 }
587
588 set_sanitized(){
589     var=$1
590     shift
591     eval $(sanitize_var_name "$var")='$*'
592 }
593
594 get_sanitized(){
595     eval echo \$$(sanitize_var_name "$1")
596 }
597
598 pushvar(){
599     for pvar in $*; do
600         eval level=\${${pvar}_level:=0}
601         eval ${pvar}_${level}="\$$pvar"
602         eval ${pvar}_level=$(($level+1))
603     done
604 }
605
606 popvar(){
607     for pvar in $*; do
608         eval level=\${${pvar}_level:-0}
609         test $level = 0 && continue
610         eval level=$(($level-1))
611         eval $pvar="\${${pvar}_${level}}"
612         eval ${pvar}_level=$level
613         eval unset ${pvar}_${level}
614     done
615 }
616
617 request(){
618     for var in $*; do
619         eval ${var}_requested=yes
620         eval $var=
621     done
622 }
623
624 enable(){
625     set_all yes $*
626 }
627
628 disable(){
629     set_all no $*
630 }
631
632 enable_weak(){
633     set_weak yes $*
634 }
635
636 disable_weak(){
637     set_weak no $*
638 }
639
640 enable_sanitized(){
641     for var; do
642         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
643     done
644 }
645
646 disable_sanitized(){
647     for var; do
648         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
649     done
650 }
651
652 do_enable_deep(){
653     for var; do
654         enabled $var && continue
655         eval sel="\$${var}_select"
656         eval sgs="\$${var}_suggest"
657         pushvar var sgs
658         enable_deep $sel
659         popvar sgs
660         enable_deep_weak $sgs
661         popvar var
662     done
663 }
664
665 enable_deep(){
666     do_enable_deep $*
667     enable $*
668 }
669
670 enable_deep_weak(){
671     for var; do
672         disabled $var && continue
673         pushvar var
674         do_enable_deep $var
675         popvar var
676         enable_weak $var
677     done
678 }
679
680 requested(){
681     test "${1#!}" = "$1" && op='=' || op=!=
682     eval test "x\$${1#!}_requested" $op "xyes"
683 }
684
685 enabled(){
686     test "${1#!}" = "$1" && op='=' || op=!=
687     eval test "x\$${1#!}" $op "xyes"
688 }
689
690 disabled(){
691     test "${1#!}" = "$1" && op='=' || op=!=
692     eval test "x\$${1#!}" $op "xno"
693 }
694
695 enabled_all(){
696     for opt; do
697         enabled $opt || return 1
698     done
699 }
700
701 disabled_all(){
702     for opt; do
703         disabled $opt || return 1
704     done
705 }
706
707 enabled_any(){
708     for opt; do
709         enabled $opt && return 0
710     done
711 }
712
713 disabled_any(){
714     for opt; do
715         disabled $opt && return 0
716     done
717     return 1
718 }
719
720 set_default(){
721     for opt; do
722         eval : \${$opt:=\$${opt}_default}
723     done
724 }
725
726 is_in(){
727     value=$1
728     shift
729     for var in $*; do
730         [ $var = $value ] && return 0
731     done
732     return 1
733 }
734
735 check_deps(){
736     for cfg; do
737         enabled ${cfg}_checking && die "Circular dependency for $cfg."
738         disabled ${cfg}_checking && continue
739         enable ${cfg}_checking
740
741         eval dep_all="\$${cfg}_deps"
742         eval dep_any="\$${cfg}_deps_any"
743         eval dep_con="\$${cfg}_conflict"
744         eval dep_sel="\$${cfg}_select"
745         eval dep_sgs="\$${cfg}_suggest"
746         eval dep_ifa="\$${cfg}_if"
747         eval dep_ifn="\$${cfg}_if_any"
748
749         pushvar cfg dep_all dep_any dep_con dep_sel dep_sgs dep_ifa dep_ifn
750         check_deps $dep_all $dep_any $dep_con $dep_sel $dep_sgs $dep_ifa $dep_ifn
751         popvar cfg dep_all dep_any dep_con dep_sel dep_sgs dep_ifa dep_ifn
752
753         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
754         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
755         enabled_all  $dep_all || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but not all dependencies are satisfied: $dep_all"; }
756         enabled_any  $dep_any || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but not any dependency is satisfied: $dep_any"; }
757         disabled_all $dep_con || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but some conflicting dependencies are unsatisfied: $dep_con"; }
758         disabled_any $dep_sel && { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but some selected dependency is unsatisfied: $dep_sel"; }
759
760         enabled $cfg && enable_deep_weak $dep_sel $dep_sgs
761
762         for dep in $dep_all $dep_any $dep_sel $dep_sgs; do
763             # filter out library deps, these do not belong in extralibs
764             is_in $dep $LIBRARY_LIST && continue
765             enabled $dep && eval append ${cfg}_extralibs ${dep}_extralibs
766         done
767
768         disable ${cfg}_checking
769     done
770 }
771
772 print_config(){
773     pfx=$1
774     files=$2
775     shift 2
776     map 'eval echo "$v \${$v:-no}"' "$@" |
777     awk "BEGIN { split(\"$files\", files) }
778         {
779             c = \"$pfx\" toupper(\$1);
780             v = \$2;
781             sub(/yes/, 1, v);
782             sub(/no/,  0, v);
783             for (f in files) {
784                 file = files[f];
785                 if (file ~ /\\.h\$/) {
786                     printf(\"#define %s %d\\n\", c, v) >>file;
787                 } else if (file ~ /\\.asm\$/) {
788                     printf(\"%%define %s %d\\n\", c, v) >>file;
789                 } else if (file ~ /\\.mak\$/) {
790                     n = -v ? \"\" : \"!\";
791                     printf(\"%s%s=yes\\n\", n, c) >>file;
792                 } else if (file ~ /\\.texi\$/) {
793                     pre = -v ? \"\" : \"@c \";
794                     yesno = \$2;
795                     c2 = tolower(c);
796                     gsub(/_/, \"-\", c2);
797                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
798                 }
799             }
800         }"
801 }
802
803 print_enabled(){
804     suf=$1
805     shift
806     for v; do
807         enabled $v && printf "%s\n" ${v%$suf}
808     done
809 }
810
811 append(){
812     var=$1
813     shift
814     eval "$var=\"\$$var $*\""
815 }
816
817 prepend(){
818     var=$1
819     shift
820     eval "$var=\"$* \$$var\""
821 }
822
823 unique(){
824     var=$1
825     uniq_list=""
826     for tok in $(eval echo \$$var); do
827         uniq_list="$(filter_out $tok $uniq_list) $tok"
828     done
829     eval "$var=\"${uniq_list}\""
830 }
831
832 resolve(){
833     var=$1
834     tmpvar=
835     for entry in $(eval echo \$$var); do
836         tmpvar="$tmpvar $(eval echo \$${entry})"
837     done
838     eval "$var=\"${tmpvar}\""
839 }
840
841 add_cppflags(){
842     append CPPFLAGS "$@"
843 }
844
845 add_cflags(){
846     append CFLAGS $($cflags_filter "$@")
847 }
848
849 add_cflags_headers(){
850     append CFLAGS_HEADERS $($cflags_filter "$@")
851 }
852
853 add_cxxflags(){
854     append CXXFLAGS $($cflags_filter "$@")
855 }
856
857 add_asflags(){
858     append ASFLAGS $($asflags_filter "$@")
859 }
860
861 add_objcflags(){
862     append OBJCFLAGS $($objcflags_filter "$@")
863 }
864
865 add_ldflags(){
866     append LDFLAGS $($ldflags_filter "$@")
867 }
868
869 add_ldexeflags(){
870     append LDEXEFLAGS $($ldflags_filter "$@")
871 }
872
873 add_ldsoflags(){
874     append LDSOFLAGS $($ldflags_filter "$@")
875 }
876
877 add_stripflags(){
878     append ASMSTRIPFLAGS "$@"
879 }
880
881 add_extralibs(){
882     prepend extralibs $($ldflags_filter "$@")
883 }
884
885 add_host_cppflags(){
886     append host_cppflags "$@"
887 }
888
889 add_host_cflags(){
890     append host_cflags $($host_cflags_filter "$@")
891 }
892
893 add_host_ldflags(){
894     append host_ldflags $($host_ldflags_filter "$@")
895 }
896
897 add_compat(){
898     append compat_objs $1
899     shift
900     map 'add_cppflags -D$v' "$@"
901 }
902
903 check_cmd(){
904     log "$@"
905     "$@" >> $logfile 2>&1
906 }
907
908 check_stat(){
909     log check_stat "$@"
910     stat "$1" >> $logfile 2>&1
911 }
912
913 cc_o(){
914     eval printf '%s\\n' $CC_O
915 }
916
917 cc_e(){
918     eval printf '%s\\n' $CC_E
919 }
920
921 check_cc(){
922     log check_cc "$@"
923     cat > $TMPC
924     log_file $TMPC
925     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
926 }
927
928 check_cxx(){
929     log check_cxx "$@"
930     cat > $TMPCPP
931     log_file $TMPCPP
932     check_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
933 }
934
935 check_objcc(){
936     log check_objcc "$@"
937     cat > $TMPM
938     log_file $TMPM
939     check_cmd $objcc -Werror=missing-prototypes $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPM
940 }
941
942 check_cpp(){
943     log check_cpp "$@"
944     cat > $TMPC
945     log_file $TMPC
946     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
947 }
948
949 as_o(){
950     eval printf '%s\\n' $AS_O
951 }
952
953 check_as(){
954     log check_as "$@"
955     cat > $TMPS
956     log_file $TMPS
957     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
958 }
959
960 check_inline_asm(){
961     log check_inline_asm "$@"
962     name="$1"
963     code="$2"
964     shift 2
965     disable $name
966     check_cc "$@" <<EOF && enable $name
967 void foo(void){ __asm__ volatile($code); }
968 EOF
969 }
970
971 check_inline_asm_flags(){
972     log check_inline_asm_flags "$@"
973     name="$1"
974     code="$2"
975     flags=''
976     shift 2
977     while [ "$1" != "" ]; do
978       append flags $1
979       shift
980     done;
981     disable $name
982     cat > $TMPC <<EOF
983 void foo(void){ __asm__ volatile($code); }
984 EOF
985     log_file $TMPC
986     check_cmd $cc $CPPFLAGS $CFLAGS $flags "$@" $CC_C $(cc_o $TMPO) $TMPC &&
987     enable $name && add_cflags $flags && add_asflags $flags && add_ldflags $flags
988 }
989
990 check_insn(){
991     log check_insn "$@"
992     check_inline_asm ${1}_inline "\"$2\""
993     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
994 }
995
996 check_x86asm(){
997     log check_x86asm "$@"
998     echo "$1" > $TMPS
999     log_file $TMPS
1000     shift 1
1001     check_cmd $x86asmexe $X86ASMFLAGS -Werror "$@" -o $TMPO $TMPS
1002 }
1003
1004 ld_o(){
1005     eval printf '%s\\n' $LD_O
1006 }
1007
1008 check_ld(){
1009     log check_ld "$@"
1010     type=$1
1011     shift 1
1012     flags=$(filter_out '-l*|*.so' $@)
1013     libs=$(filter '-l*|*.so' $@)
1014     check_$type $($cflags_filter $flags) || return
1015     flags=$($ldflags_filter $flags)
1016     libs=$($ldflags_filter $libs)
1017     check_cmd $ld $LDFLAGS $LDEXEFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
1018 }
1019
1020 print_include(){
1021     hdr=$1
1022     test "${hdr%.h}" = "${hdr}" &&
1023         echo "#include $hdr"    ||
1024         echo "#include <$hdr>"
1025 }
1026
1027 check_code(){
1028     log check_code "$@"
1029     check=$1
1030     headers=$2
1031     code=$3
1032     shift 3
1033     {
1034         for hdr in $headers; do
1035             print_include $hdr
1036         done
1037         echo "int main(void) { $code; return 0; }"
1038     } | check_$check "$@"
1039 }
1040
1041 check_cppflags(){
1042     log check_cppflags "$@"
1043     check_cpp "$@" <<EOF && append CPPFLAGS "$@"
1044 #include <stdlib.h>
1045 EOF
1046 }
1047
1048 test_cflags(){
1049     log test_cflags "$@"
1050     set -- $($cflags_filter "$@")
1051     check_cc "$@" <<EOF
1052 int x;
1053 EOF
1054 }
1055
1056 check_cflags(){
1057     log check_cflags "$@"
1058     test_cflags "$@" && add_cflags "$@"
1059 }
1060
1061 check_cxxflags(){
1062     log check_cxxflags "$@"
1063     set -- $($cflags_filter "$@")
1064     check_cxx "$@" <<EOF && append CXXFLAGS "$@"
1065 int x;
1066 EOF
1067 }
1068
1069 test_objcflags(){
1070     log test_objcflags "$@"
1071     set -- $($objcflags_filter "$@")
1072     check_objcc "$@" <<EOF
1073 int x;
1074 EOF
1075 }
1076
1077 check_objcflags(){
1078     log check_objcflags "$@"
1079     test_objcflags "$@" && add_objcflags "$@"
1080 }
1081
1082 test_ldflags(){
1083     log test_ldflags "$@"
1084     check_ld "cc" "$@" <<EOF
1085 int main(void){ return 0; }
1086 EOF
1087 }
1088
1089 check_ldflags(){
1090     log check_ldflags "$@"
1091     test_ldflags "$@" && add_ldflags "$@"
1092 }
1093
1094 test_stripflags(){
1095     log test_stripflags "$@"
1096     # call check_cc to get a fresh TMPO
1097     check_cc <<EOF
1098 int main(void) { return 0; }
1099 EOF
1100     check_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
1101 }
1102
1103 check_stripflags(){
1104     log check_stripflags "$@"
1105     test_stripflags "$@" && add_stripflags "$@"
1106 }
1107
1108 check_header(){
1109     log check_header "$@"
1110     header=$1
1111     shift
1112     disable_sanitized $header
1113     check_cpp "$@" <<EOF && enable_sanitized $header
1114 #include <$header>
1115 int x;
1116 EOF
1117 }
1118
1119 check_header_objcc(){
1120     log check_header_objcc "$@"
1121     rm -f -- "$TMPO"
1122     header=$1
1123     shift
1124     disable_sanitized $header
1125     {
1126        echo "#include <$header>"
1127        echo "int main(void) { return 0; }"
1128     } | check_objcc && check_stat "$TMPO" && enable_sanitized $header
1129 }
1130
1131 check_apple_framework(){
1132     log check_apple_framework "$@"
1133     framework="$1"
1134     name="$(tolower $framework)"
1135     header="${framework}/${framework}.h"
1136     disable $name
1137     check_header_objcc $header &&
1138         enable $name && eval ${name}_extralibs='"-framework $framework"'
1139 }
1140
1141 check_func(){
1142     log check_func "$@"
1143     func=$1
1144     shift
1145     disable $func
1146     check_ld "cc" "$@" <<EOF && enable $func
1147 extern int $func();
1148 int main(void){ $func(); }
1149 EOF
1150 }
1151
1152 check_complexfunc(){
1153     log check_complexfunc "$@"
1154     func=$1
1155     narg=$2
1156     shift 2
1157     test $narg = 2 && args="f, g" || args="f * I"
1158     disable $func
1159     check_ld "cc" "$@" <<EOF && enable $func
1160 #include <complex.h>
1161 #include <math.h>
1162 float foo(complex float f, complex float g) { return $func($args); }
1163 int main(void){ return (int) foo; }
1164 EOF
1165 }
1166
1167 check_mathfunc(){
1168     log check_mathfunc "$@"
1169     func=$1
1170     narg=$2
1171     shift 2
1172     test $narg = 2 && args="f, g" || args="f"
1173     disable $func
1174     check_ld "cc" "$@" <<EOF && enable $func
1175 #include <math.h>
1176 float foo(float f, float g) { return $func($args); }
1177 int main(void){ return (int) foo; }
1178 EOF
1179 }
1180
1181 check_func_headers(){
1182     log check_func_headers "$@"
1183     headers=$1
1184     funcs=$2
1185     shift 2
1186     {
1187         for hdr in $headers; do
1188             print_include $hdr
1189         done
1190         echo "#include <stdint.h>"
1191         for func in $funcs; do
1192             echo "long check_$func(void) { return (long) $func; }"
1193         done
1194         echo "int main(void) { int ret = 0;"
1195         # LTO could optimize out the test functions without this
1196         for func in $funcs; do
1197             echo " ret |= ((intptr_t)check_$func) & 0xFFFF;"
1198         done
1199         echo "return ret; }"
1200     } | check_ld "cc" "$@" && enable $funcs && enable_sanitized $headers
1201 }
1202
1203 check_class_headers_cpp(){
1204     log check_class_headers_cpp "$@"
1205     headers=$1
1206     classes=$2
1207     shift 2
1208     {
1209         for hdr in $headers; do
1210             echo "#include <$hdr>"
1211         done
1212         echo "int main(void) { "
1213         i=1
1214         for class in $classes; do
1215             echo "$class obj$i;"
1216             i=$(expr $i + 1)
1217         done
1218         echo "return 0; }"
1219     } | check_ld "cxx" "$@" && enable $funcs && enable_sanitized $headers
1220 }
1221
1222 check_cpp_condition(){
1223     log check_cpp_condition "$@"
1224     header=$1
1225     condition=$2
1226     shift 2
1227     check_cpp "$@" <<EOF
1228 #include <$header>
1229 #if !($condition)
1230 #error "unsatisfied condition: $condition"
1231 #endif
1232 EOF
1233 }
1234
1235 test_cflags_cc(){
1236     log test_cflags_cc "$@"
1237     flags=$1
1238     header=$2
1239     condition=$3
1240     shift 3
1241     set -- $($cflags_filter "$flags")
1242     check_cc "$@" <<EOF
1243 #include <$header>
1244 #if !($condition)
1245 #error "unsatisfied condition: $condition"
1246 #endif
1247 EOF
1248 }
1249
1250 check_lib(){
1251     log check_lib "$@"
1252     name="$1"
1253     headers="$2"
1254     funcs="$3"
1255     shift 3
1256     disable $name
1257     check_func_headers "$headers" "$funcs" "$@" &&
1258         enable $name && eval ${name}_extralibs="\$@"
1259 }
1260
1261 check_lib_cpp(){
1262     log check_lib_cpp "$@"
1263     name="$1"
1264     headers="$2"
1265     classes="$3"
1266     shift 3
1267     disable $name
1268     check_class_headers_cpp "$headers" "$classes" "$@" &&
1269         enable $name && eval ${name}_extralibs="\$@"
1270 }
1271
1272 check_pkg_config(){
1273     log check_pkg_config "$@"
1274     name="$1"
1275     pkg_version="$2"
1276     pkg="${2%% *}"
1277     headers="$3"
1278     funcs="$4"
1279     shift 4
1280     disable $name
1281     check_cmd $pkg_config --exists --print-errors $pkg_version || return
1282     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1283     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1284     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1285         enable $name &&
1286         set_sanitized "${name}_cflags"    $pkg_cflags &&
1287         set_sanitized "${name}_extralibs" $pkg_libs
1288 }
1289
1290 check_exec(){
1291     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1292 }
1293
1294 check_exec_crash(){
1295     log check_exec_crash "$@"
1296     code=$(cat)
1297
1298     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1299     # are safe but may not be available everywhere.  Thus we use
1300     # raise(SIGTERM) instead.  The check is run in a subshell so we
1301     # can redirect the "Terminated" message from the shell.  SIGBUS
1302     # is not defined by standard C so it is used conditionally.
1303
1304     (check_exec "$@") >> $logfile 2>&1 <<EOF
1305 #include <signal.h>
1306 static void sighandler(int sig){
1307     raise(SIGTERM);
1308 }
1309 int foo(void){
1310     $code
1311 }
1312 int (*func_ptr)(void) = foo;
1313 int main(void){
1314     signal(SIGILL, sighandler);
1315     signal(SIGFPE, sighandler);
1316     signal(SIGSEGV, sighandler);
1317 #ifdef SIGBUS
1318     signal(SIGBUS, sighandler);
1319 #endif
1320     return func_ptr();
1321 }
1322 EOF
1323 }
1324
1325 check_type(){
1326     log check_type "$@"
1327     headers=$1
1328     type=$2
1329     shift 2
1330     disable_sanitized "$type"
1331     check_code cc "$headers" "$type v" "$@" && enable_sanitized "$type"
1332 }
1333
1334 check_struct(){
1335     log check_struct "$@"
1336     headers=$1
1337     struct=$2
1338     member=$3
1339     shift 3
1340     disable_sanitized "${struct}_${member}"
1341     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1342         enable_sanitized "${struct}_${member}"
1343 }
1344
1345 check_builtin(){
1346     log check_builtin "$@"
1347     name=$1
1348     headers=$2
1349     builtin=$3
1350     shift 3
1351     disable "$name"
1352     check_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1353 }
1354
1355 check_compile_assert(){
1356     log check_compile_assert "$@"
1357     name=$1
1358     headers=$2
1359     condition=$3
1360     shift 3
1361     disable "$name"
1362     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1363 }
1364
1365 require(){
1366     log require "$@"
1367     name_version="$1"
1368     name="${1%% *}"
1369     headers="$2"
1370     func="$3"
1371     shift 3
1372     check_lib $name "$headers" $func "$@" || die "ERROR: $name_version not found"
1373 }
1374
1375 require_cpp(){
1376     name="$1"
1377     headers="$2"
1378     classes="$3"
1379     shift 3
1380     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1381 }
1382
1383 require_header(){
1384     log require "$@"
1385     header="$1"
1386     shift
1387     check_header "$header" "$@" || die "ERROR: $header header not found"
1388 }
1389
1390 require_cpp_condition(){
1391     log require "$@"
1392     header="$1"
1393     condition="$2"
1394     shift 2
1395     check_cpp_condition "$header" "$condition" "$@" || die "ERROR: $condition not satisfied"
1396 }
1397
1398 use_pkg_config(){
1399     log use_pkg_config "$@"
1400     name="$1"
1401     check_pkg_config "$@" || return 1
1402     add_cflags    $(get_sanitized "${name}_cflags")
1403 }
1404
1405 require_pkg_config(){
1406     log require_pkg_config "$@"
1407     pkg_version="$2"
1408     use_pkg_config "$@" || die "ERROR: $pkg_version not found using pkg-config$pkg_config_fail_message"
1409 }
1410
1411 hostcc_e(){
1412     eval printf '%s\\n' $HOSTCC_E
1413 }
1414
1415 hostcc_o(){
1416     eval printf '%s\\n' $HOSTCC_O
1417 }
1418
1419 check_host_cc(){
1420     log check_host_cc "$@"
1421     cat > $TMPC
1422     log_file $TMPC
1423     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1424 }
1425
1426 check_host_cpp(){
1427     log check_host_cpp "$@"
1428     cat > $TMPC
1429     log_file $TMPC
1430     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1431 }
1432
1433 check_host_cppflags(){
1434     log check_host_cppflags "$@"
1435     check_host_cpp "$@" <<EOF && append host_cppflags "$@"
1436 #include <stdlib.h>
1437 EOF
1438 }
1439
1440 check_host_cflags(){
1441     log check_host_cflags "$@"
1442     set -- $($host_cflags_filter "$@")
1443     check_host_cc "$@" <<EOF && append host_cflags "$@"
1444 int x;
1445 EOF
1446 }
1447
1448 check_host_cpp_condition(){
1449     log check_host_cpp_condition "$@"
1450     header=$1
1451     condition=$2
1452     shift 2
1453     check_host_cpp "$@" <<EOF
1454 #include <$header>
1455 #if !($condition)
1456 #error "unsatisfied condition: $condition"
1457 #endif
1458 EOF
1459 }
1460
1461 cp_if_changed(){
1462     cmp -s "$1" "$2" && { test "$quiet" != "yes" && echo "$2 is unchanged"; } && return
1463     mkdir -p "$(dirname $2)"
1464     cp -f "$1" "$2"
1465 }
1466
1467 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1468 # system-dependent things.
1469
1470 AVCODEC_COMPONENTS="
1471     bsfs
1472     decoders
1473     encoders
1474     hwaccels
1475     parsers
1476 "
1477
1478 AVDEVICE_COMPONENTS="
1479     indevs
1480     outdevs
1481 "
1482
1483 AVFILTER_COMPONENTS="
1484     filters
1485 "
1486
1487 AVFORMAT_COMPONENTS="
1488     demuxers
1489     muxers
1490     protocols
1491 "
1492
1493 AVRESAMPLE_COMPONENTS=""
1494
1495 AVUTIL_COMPONENTS=""
1496
1497 COMPONENT_LIST="
1498     $AVCODEC_COMPONENTS
1499     $AVDEVICE_COMPONENTS
1500     $AVFILTER_COMPONENTS
1501     $AVFORMAT_COMPONENTS
1502     $AVRESAMPLE_COMPONENTS
1503     $AVUTIL_COMPONENTS
1504 "
1505
1506 EXAMPLE_LIST="
1507     avio_dir_cmd_example
1508     avio_reading_example
1509     decode_audio_example
1510     decode_video_example
1511     demuxing_decoding_example
1512     encode_audio_example
1513     encode_video_example
1514     extract_mvs_example
1515     filter_audio_example
1516     filtering_audio_example
1517     filtering_video_example
1518     http_multiclient_example
1519     hw_decode_example
1520     metadata_example
1521     muxing_example
1522     qsvdec_example
1523     remuxing_example
1524     resampling_audio_example
1525     scaling_video_example
1526     transcode_aac_example
1527     transcoding_example
1528 "
1529
1530 EXTERNAL_AUTODETECT_LIBRARY_LIST="
1531     alsa
1532     appkit
1533     avfoundation
1534     bzlib
1535     coreimage
1536     iconv
1537     libxcb
1538     libxcb_shm
1539     libxcb_shape
1540     libxcb_xfixes
1541     lzma
1542     schannel
1543     sdl2
1544     securetransport
1545     sndio
1546     xlib
1547     zlib
1548 "
1549
1550 EXTERNAL_LIBRARY_GPL_LIST="
1551     avisynth
1552     frei0r
1553     libcdio
1554     librubberband
1555     libvidstab
1556     libx264
1557     libx265
1558     libxavs
1559     libxvid
1560 "
1561
1562 EXTERNAL_LIBRARY_NONFREE_LIST="
1563     decklink
1564     libndi_newtek
1565     libfdk_aac
1566     openssl
1567 "
1568
1569 EXTERNAL_LIBRARY_VERSION3_LIST="
1570     gmp
1571     libopencore_amrnb
1572     libopencore_amrwb
1573     libvmaf
1574     libvo_amrwbenc
1575     rkmpp
1576 "
1577
1578 EXTERNAL_LIBRARY_GPLV3_LIST="
1579     libsmbclient
1580 "
1581
1582 EXTERNAL_LIBRARY_LIST="
1583     $EXTERNAL_LIBRARY_GPL_LIST
1584     $EXTERNAL_LIBRARY_NONFREE_LIST
1585     $EXTERNAL_LIBRARY_VERSION3_LIST
1586     $EXTERNAL_LIBRARY_GPLV3_LIST
1587     chromaprint
1588     gcrypt
1589     gnutls
1590     jni
1591     ladspa
1592     libass
1593     libbluray
1594     libbs2b
1595     libcaca
1596     libcelt
1597     libdc1394
1598     libdrm
1599     libflite
1600     libfontconfig
1601     libfreetype
1602     libfribidi
1603     libgme
1604     libgsm
1605     libiec61883
1606     libilbc
1607     libjack
1608     libkvazaar
1609     libmodplug
1610     libmp3lame
1611     libmysofa
1612     libopencv
1613     libopenh264
1614     libopenjpeg
1615     libopenmpt
1616     libopus
1617     libpulse
1618     librsvg
1619     librtmp
1620     libshine
1621     libsmbclient
1622     libsnappy
1623     libsoxr
1624     libspeex
1625     libssh
1626     libtesseract
1627     libtheora
1628     libtwolame
1629     libv4l2
1630     libvorbis
1631     libvpx
1632     libwavpack
1633     libwebp
1634     libxml2
1635     libzimg
1636     libzmq
1637     libzvbi
1638     mediacodec
1639     openal
1640     opencl
1641     opengl
1642 "
1643
1644 HWACCEL_AUTODETECT_LIBRARY_LIST="
1645     audiotoolbox
1646     crystalhd
1647     cuda
1648     cuvid
1649     d3d11va
1650     dxva2
1651     nvdec
1652     nvenc
1653     vaapi
1654     vdpau
1655     videotoolbox
1656     v4l2_m2m
1657     xvmc
1658 "
1659
1660 # catchall list of things that require external libs to link
1661 EXTRALIBS_LIST="
1662     cpu_init
1663     cws2fws
1664 "
1665
1666 HWACCEL_LIBRARY_NONFREE_LIST="
1667     cuda_sdk
1668     libnpp
1669 "
1670
1671 HWACCEL_LIBRARY_LIST="
1672     $HWACCEL_LIBRARY_NONFREE_LIST
1673     libmfx
1674     mmal
1675     omx
1676 "
1677
1678 DOCUMENT_LIST="
1679     doc
1680     htmlpages
1681     manpages
1682     podpages
1683     txtpages
1684 "
1685
1686 FEATURE_LIST="
1687     ftrapv
1688     gray
1689     hardcoded_tables
1690     omx_rpi
1691     runtime_cpudetect
1692     safe_bitstream_reader
1693     shared
1694     small
1695     static
1696     swscale_alpha
1697 "
1698
1699 LIBRARY_LIST="
1700     avcodec
1701     avdevice
1702     avfilter
1703     avformat
1704     avresample
1705     avutil
1706     postproc
1707     swresample
1708     swscale
1709 "
1710
1711 LICENSE_LIST="
1712     gpl
1713     nonfree
1714     version3
1715 "
1716
1717 PROGRAM_LIST="
1718     ffplay
1719     ffprobe
1720     ffserver
1721     ffmpeg
1722 "
1723
1724 SUBSYSTEM_LIST="
1725     dct
1726     dwt
1727     error_resilience
1728     faan
1729     fast_unaligned
1730     fft
1731     lsp
1732     lzo
1733     mdct
1734     pixelutils
1735     network
1736     rdft
1737 "
1738
1739 # COMPONENT_LIST needs to come last to ensure correct dependency checking
1740 CONFIG_LIST="
1741     $DOCUMENT_LIST
1742     $EXAMPLE_LIST
1743     $EXTERNAL_LIBRARY_LIST
1744     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1745     $HWACCEL_LIBRARY_LIST
1746     $HWACCEL_AUTODETECT_LIBRARY_LIST
1747     $FEATURE_LIST
1748     $LICENSE_LIST
1749     $LIBRARY_LIST
1750     $PROGRAM_LIST
1751     $SUBSYSTEM_LIST
1752     autodetect
1753     fontconfig
1754     linux_perf
1755     memory_poisoning
1756     neon_clobber_test
1757     ossfuzz
1758     pic
1759     thumb
1760     valgrind_backtrace
1761     xmm_clobber_test
1762     $COMPONENT_LIST
1763 "
1764
1765 THREADS_LIST="
1766     pthreads
1767     os2threads
1768     w32threads
1769 "
1770
1771 ATOMICS_LIST="
1772     atomics_gcc
1773     atomics_suncc
1774     atomics_win32
1775 "
1776
1777 AUTODETECT_LIBS="
1778     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1779     $HWACCEL_AUTODETECT_LIBRARY_LIST
1780     $THREADS_LIST
1781 "
1782
1783 ARCH_LIST="
1784     aarch64
1785     alpha
1786     arm
1787     avr32
1788     avr32_ap
1789     avr32_uc
1790     bfin
1791     ia64
1792     m68k
1793     mips
1794     mips64
1795     parisc
1796     ppc
1797     ppc64
1798     s390
1799     sh4
1800     sparc
1801     sparc64
1802     tilegx
1803     tilepro
1804     tomi
1805     x86
1806     x86_32
1807     x86_64
1808 "
1809
1810 ARCH_EXT_LIST_ARM="
1811     armv5te
1812     armv6
1813     armv6t2
1814     armv8
1815     neon
1816     vfp
1817     vfpv3
1818     setend
1819 "
1820
1821 ARCH_EXT_LIST_MIPS="
1822     mipsfpu
1823     mips32r2
1824     mips32r5
1825     mips64r2
1826     mips32r6
1827     mips64r6
1828     mipsdsp
1829     mipsdspr2
1830     msa
1831 "
1832
1833 ARCH_EXT_LIST_LOONGSON="
1834     loongson2
1835     loongson3
1836     mmi
1837 "
1838
1839 ARCH_EXT_LIST_X86_SIMD="
1840     aesni
1841     amd3dnow
1842     amd3dnowext
1843     avx
1844     avx2
1845     fma3
1846     fma4
1847     mmx
1848     mmxext
1849     sse
1850     sse2
1851     sse3
1852     sse4
1853     sse42
1854     ssse3
1855     xop
1856 "
1857
1858 ARCH_EXT_LIST_PPC="
1859     altivec
1860     dcbzl
1861     ldbrx
1862     power8
1863     ppc4xx
1864     vsx
1865 "
1866
1867 ARCH_EXT_LIST_X86="
1868     $ARCH_EXT_LIST_X86_SIMD
1869     cpunop
1870     i686
1871 "
1872
1873 ARCH_EXT_LIST="
1874     $ARCH_EXT_LIST_ARM
1875     $ARCH_EXT_LIST_PPC
1876     $ARCH_EXT_LIST_X86
1877     $ARCH_EXT_LIST_MIPS
1878     $ARCH_EXT_LIST_LOONGSON
1879 "
1880
1881 ARCH_FEATURES="
1882     aligned_stack
1883     fast_64bit
1884     fast_clz
1885     fast_cmov
1886     local_aligned
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     arpa_inet_h
1914     asm_types_h
1915     cdio_paranoia_h
1916     cdio_paranoia_paranoia_h
1917     cuda_h
1918     d3d11_h
1919     dispatch_dispatch_h
1920     dev_bktr_ioctl_bt848_h
1921     dev_bktr_ioctl_meteor_h
1922     dev_ic_bt8xx_h
1923     dev_video_bktr_ioctl_bt848_h
1924     dev_video_meteor_ioctl_meteor_h
1925     direct_h
1926     dirent_h
1927     dlfcn_h
1928     dxgidebug_h
1929     dxva_h
1930     ES2_gl_h
1931     gsm_h
1932     io_h
1933     mach_mach_time_h
1934     machine_ioctl_bt848_h
1935     machine_ioctl_meteor_h
1936     malloc_h
1937     opencv2_core_core_c_h
1938     OpenGL_gl3_h
1939     poll_h
1940     soundcard_h
1941     stdatomic_h
1942     sys_mman_h
1943     sys_param_h
1944     sys_resource_h
1945     sys_select_h
1946     sys_soundcard_h
1947     sys_time_h
1948     sys_un_h
1949     sys_videoio_h
1950     termios_h
1951     udplite_h
1952     unistd_h
1953     valgrind_valgrind_h
1954     windows_h
1955     winsock2_h
1956 "
1957
1958 INTRINSICS_LIST="
1959     intrinsics_neon
1960 "
1961
1962 COMPLEX_FUNCS="
1963     cabs
1964     cexp
1965 "
1966
1967 MATH_FUNCS="
1968     atanf
1969     atan2f
1970     cbrt
1971     cbrtf
1972     copysign
1973     cosf
1974     erf
1975     exp2
1976     exp2f
1977     expf
1978     hypot
1979     isfinite
1980     isinf
1981     isnan
1982     ldexpf
1983     llrint
1984     llrintf
1985     log2
1986     log2f
1987     log10f
1988     lrint
1989     lrintf
1990     powf
1991     rint
1992     round
1993     roundf
1994     sinf
1995     trunc
1996     truncf
1997 "
1998
1999 SYSTEM_FUNCS="
2000     access
2001     aligned_malloc
2002     arc4random
2003     clock_gettime
2004     closesocket
2005     CommandLineToArgvW
2006     CoTaskMemFree
2007     CryptGenRandom
2008     fcntl
2009     flt_lim
2010     fork
2011     getaddrinfo
2012     gethrtime
2013     getopt
2014     GetProcessAffinityMask
2015     GetProcessMemoryInfo
2016     GetProcessTimes
2017     getrusage
2018     GetSystemTimeAsFileTime
2019     gettimeofday
2020     glob
2021     glXGetProcAddress
2022     gmtime_r
2023     inet_aton
2024     isatty
2025     kbhit
2026     LoadLibrary
2027     localtime_r
2028     lstat
2029     lzo1x_999_compress
2030     mach_absolute_time
2031     MapViewOfFile
2032     memalign
2033     mkstemp
2034     mmap
2035     mprotect
2036     nanosleep
2037     PeekNamedPipe
2038     posix_memalign
2039     pthread_cancel
2040     sched_getaffinity
2041     SetConsoleTextAttribute
2042     SetConsoleCtrlHandler
2043     setmode
2044     setrlimit
2045     Sleep
2046     strerror_r
2047     sysconf
2048     sysctl
2049     usleep
2050     UTGetOSTypeFromString
2051     VirtualAlloc
2052     wglGetProcAddress
2053 "
2054
2055 TOOLCHAIN_FEATURES="
2056     as_arch_directive
2057     as_fpu_directive
2058     as_func
2059     as_object_arch
2060     asm_mod_q
2061     attribute_may_alias
2062     attribute_packed
2063     blocks_extension
2064     ebp_available
2065     ebx_available
2066     gnu_as
2067     gnu_windres
2068     ibm_asm
2069     inline_asm_direct_symbol_refs
2070     inline_asm_labels
2071     inline_asm_nonlocal_labels
2072     pragma_deprecated
2073     rsync_contimeout
2074     symver_asm_label
2075     symver_gnu_asm
2076     vfp_args
2077     xform_asm
2078     xmm_clobbers
2079 "
2080
2081 TYPES_LIST="
2082     CONDITION_VARIABLE_Ptr
2083     kCMVideoCodecType_HEVC
2084     socklen_t
2085     struct_addrinfo
2086     struct_group_source_req
2087     struct_ip_mreq_source
2088     struct_ipv6_mreq
2089     struct_msghdr_msg_flags
2090     struct_pollfd
2091     struct_rusage_ru_maxrss
2092     struct_sctp_event_subscribe
2093     struct_sockaddr_in6
2094     struct_sockaddr_sa_len
2095     struct_sockaddr_storage
2096     struct_stat_st_mtim_tv_nsec
2097     struct_v4l2_frmivalenum_discrete
2098 "
2099
2100 HAVE_LIST="
2101     $ARCH_EXT_LIST
2102     $(add_suffix _external $ARCH_EXT_LIST)
2103     $(add_suffix _inline   $ARCH_EXT_LIST)
2104     $ARCH_FEATURES
2105     $ATOMICS_LIST
2106     $BUILTIN_LIST
2107     $COMPLEX_FUNCS
2108     $HAVE_LIST_CMDLINE
2109     $HAVE_LIST_PUB
2110     $HEADERS_LIST
2111     $INTRINSICS_LIST
2112     $MATH_FUNCS
2113     $SYSTEM_FUNCS
2114     $THREADS_LIST
2115     $TOOLCHAIN_FEATURES
2116     $TYPES_LIST
2117     atomics_native
2118     dos_paths
2119     libc_msvcrt
2120     makeinfo
2121     makeinfo_html
2122     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
2123     perl
2124     pod2man
2125     section_data_rel_ro
2126     texi2html
2127     threads
2128     uwp
2129     vaapi_drm
2130     vaapi_x11
2131     vdpau_x11
2132     winrt
2133 "
2134
2135 # options emitted with CONFIG_ prefix but not available on the command line
2136 CONFIG_EXTRA="
2137     aandcttables
2138     ac3dsp
2139     adts_header
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 altivec_deps="ppc"
2329 dcbzl_deps="ppc"
2330 ldbrx_deps="ppc"
2331 ppc4xx_deps="ppc"
2332 vsx_deps="altivec"
2333 power8_deps="vsx"
2334
2335 loongson2_deps="mips"
2336 loongson3_deps="mips"
2337 mips32r2_deps="mips"
2338 mips32r5_deps="mips"
2339 mips32r6_deps="mips"
2340 mips64r2_deps="mips"
2341 mips64r6_deps="mips"
2342 mipsfpu_deps="mips"
2343 mipsdsp_deps="mips"
2344 mipsdspr2_deps="mips"
2345 mmi_deps="mips"
2346 msa_deps="mipsfpu"
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 x86"
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"
2409 faandct_select="fdctdsp"
2410 faanidct_deps="faan"
2411 faanidct_select="idctdsp"
2412 h264dsp_select="startcode"
2413 hevcparse_select="golomb"
2414 frame_thread_encoder_deps="encoders threads"
2415 intrax8_select="blockdsp idctdsp"
2416 mdct_select="fft"
2417 mdct15_select="fft"
2418 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2419 mpeg_er_select="error_resilience"
2420 mpegaudio_select="mpegaudiodsp mpegaudioheader"
2421 mpegaudiodsp_select="dct"
2422 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2423 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
2424 vc1dsp_select="h264chroma qpeldsp startcode"
2425 rdft_select="fft"
2426
2427 # decoders / encoders
2428 aac_decoder_select="adts_header mdct15 mdct sinewin"
2429 aac_fixed_decoder_select="mdct sinewin"
2430 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2431 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2432 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2433 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2434 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2435 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2436 adpcm_g722_decoder_select="g722dsp"
2437 adpcm_g722_encoder_select="g722dsp"
2438 aic_decoder_select="golomb idctdsp"
2439 alac_encoder_select="lpc"
2440 als_decoder_select="bswapdsp"
2441 amrnb_decoder_select="lsp"
2442 amrwb_decoder_select="lsp"
2443 amv_decoder_select="sp5x_decoder exif"
2444 amv_encoder_select="aandcttables jpegtables mpegvideoenc"
2445 ape_decoder_select="bswapdsp llauddsp"
2446 apng_decoder_select="zlib"
2447 apng_encoder_select="llvidencdsp zlib"
2448 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2449 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2450 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2451 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2452 atrac1_decoder_select="mdct sinewin"
2453 atrac3_decoder_select="mdct"
2454 atrac3p_decoder_select="mdct sinewin"
2455 avrn_decoder_select="exif jpegtables"
2456 bink_decoder_select="blockdsp hpeldsp"
2457 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2458 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2459 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2460 clearvideo_decoder_select="idctdsp"
2461 cllc_decoder_select="bswapdsp"
2462 comfortnoise_encoder_select="lpc"
2463 cook_decoder_select="audiodsp mdct sinewin"
2464 cscd_decoder_select="lzo"
2465 cscd_decoder_suggest="zlib"
2466 dca_decoder_select="mdct"
2467 dds_decoder_select="texturedsp"
2468 dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
2469 dnxhd_decoder_select="blockdsp idctdsp"
2470 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2471 dolby_e_decoder_select="mdct"
2472 dvvideo_decoder_select="dvprofile idctdsp"
2473 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2474 dxa_decoder_select="zlib"
2475 dxv_decoder_select="lzf texturedsp"
2476 eac3_decoder_select="ac3_decoder"
2477 eac3_encoder_select="ac3_encoder"
2478 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2479 eatgq_decoder_select="aandcttables"
2480 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2481 exr_decoder_select="zlib"
2482 ffv1_decoder_select="rangecoder"
2483 ffv1_encoder_select="rangecoder"
2484 ffvhuff_decoder_select="huffyuv_decoder"
2485 ffvhuff_encoder_select="huffyuv_encoder"
2486 fic_decoder_select="golomb"
2487 flac_decoder_select="flacdsp"
2488 flac_encoder_select="bswapdsp flacdsp lpc"
2489 flashsv2_decoder_select="zlib"
2490 flashsv2_encoder_select="zlib"
2491 flashsv_decoder_select="zlib"
2492 flashsv_encoder_select="zlib"
2493 flv_decoder_select="h263_decoder"
2494 flv_encoder_select="h263_encoder"
2495 fourxm_decoder_select="blockdsp bswapdsp"
2496 fraps_decoder_select="bswapdsp huffman"
2497 g2m_decoder_select="blockdsp idctdsp jpegtables zlib"
2498 g729_decoder_select="audiodsp"
2499 h261_decoder_select="mpegvideo"
2500 h261_encoder_select="aandcttables mpegvideoenc"
2501 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2502 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2503 h263i_decoder_select="h263_decoder"
2504 h263p_decoder_select="h263_decoder"
2505 h263p_encoder_select="h263_encoder"
2506 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
2507 h264_decoder_suggest="error_resilience"
2508 hap_decoder_select="snappy texturedsp"
2509 hap_encoder_deps="libsnappy"
2510 hap_encoder_select="texturedspenc"
2511 hevc_decoder_select="bswapdsp cabac golomb hevcparse videodsp"
2512 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2513 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llvidencdsp"
2514 iac_decoder_select="imc_decoder"
2515 imc_decoder_select="bswapdsp fft mdct sinewin"
2516 indeo3_decoder_select="hpeldsp"
2517 indeo4_decoder_select="ividsp"
2518 indeo5_decoder_select="ividsp"
2519 interplay_video_decoder_select="hpeldsp"
2520 jpegls_decoder_select="mjpeg_decoder"
2521 jv_decoder_select="blockdsp"
2522 lagarith_decoder_select="llviddsp"
2523 ljpeg_encoder_select="aandcttables idctdsp jpegtables mpegvideoenc"
2524 magicyuv_decoder_select="llviddsp"
2525 magicyuv_encoder_select="llvidencdsp"
2526 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2527 metasound_decoder_select="lsp mdct sinewin"
2528 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2529 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2530 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2531 mjpegb_decoder_select="mjpeg_decoder"
2532 mlp_decoder_select="mlp_parser"
2533 mlp_encoder_select="lpc"
2534 motionpixels_decoder_select="bswapdsp"
2535 mp1_decoder_select="mpegaudio"
2536 mp1float_decoder_select="mpegaudio"
2537 mp2_decoder_select="mpegaudio"
2538 mp2float_decoder_select="mpegaudio"
2539 mp3_decoder_select="mpegaudio"
2540 mp3adu_decoder_select="mpegaudio"
2541 mp3adufloat_decoder_select="mpegaudio"
2542 mp3float_decoder_select="mpegaudio"
2543 mp3on4_decoder_select="mpegaudio"
2544 mp3on4float_decoder_select="mpegaudio"
2545 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2546 mpc8_decoder_select="mpegaudiodsp"
2547 mpegvideo_decoder_select="mpegvideo"
2548 mpeg1video_decoder_select="mpegvideo"
2549 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2550 mpeg2video_decoder_select="mpegvideo"
2551 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2552 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2553 mpeg4_encoder_select="h263_encoder"
2554 msa1_decoder_select="mss34dsp"
2555 mscc_decoder_select="zlib"
2556 msmpeg4v1_decoder_select="h263_decoder"
2557 msmpeg4v2_decoder_select="h263_decoder"
2558 msmpeg4v2_encoder_select="h263_encoder"
2559 msmpeg4v3_decoder_select="h263_decoder"
2560 msmpeg4v3_encoder_select="h263_encoder"
2561 mss2_decoder_select="mpegvideo qpeldsp vc1_decoder"
2562 mts2_decoder_select="mss34dsp"
2563 mxpeg_decoder_select="mjpeg_decoder"
2564 nellymoser_decoder_select="mdct sinewin"
2565 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2566 nuv_decoder_select="idctdsp lzo"
2567 on2avc_decoder_select="mdct"
2568 opus_decoder_deps="swresample"
2569 opus_decoder_select="mdct15"
2570 opus_encoder_select="audio_frame_queue mdct15"
2571 png_decoder_select="zlib"
2572 png_encoder_select="llvidencdsp zlib"
2573 prores_decoder_select="blockdsp idctdsp"
2574 prores_encoder_select="fdctdsp"
2575 qcelp_decoder_select="lsp"
2576 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2577 ra_144_decoder_select="audiodsp"
2578 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2579 ralf_decoder_select="golomb"
2580 rawvideo_decoder_select="bswapdsp"
2581 rscc_decoder_select="zlib"
2582 rtjpeg_decoder_select="me_cmp"
2583 rv10_decoder_select="h263_decoder"
2584 rv10_encoder_select="h263_encoder"
2585 rv20_decoder_select="h263_decoder"
2586 rv20_encoder_select="h263_encoder"
2587 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2588 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2589 screenpresso_decoder_select="zlib"
2590 shorten_decoder_select="bswapdsp"
2591 sipr_decoder_select="lsp"
2592 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2593 snow_encoder_select="aandcttables dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2594 sonic_decoder_select="golomb rangecoder"
2595 sonic_encoder_select="golomb rangecoder"
2596 sonic_ls_encoder_select="golomb rangecoder"
2597 sp5x_decoder_select="mjpeg_decoder"
2598 srgc_decoder_select="zlib"
2599 svq1_decoder_select="hpeldsp"
2600 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2601 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2602 svq3_decoder_suggest="zlib"
2603 tak_decoder_select="audiodsp"
2604 tdsc_decoder_select="zlib mjpeg_decoder"
2605 theora_decoder_select="vp3_decoder"
2606 thp_decoder_select="mjpeg_decoder"
2607 tiff_decoder_suggest="zlib lzma"
2608 tiff_encoder_suggest="zlib"
2609 truehd_decoder_select="mlp_parser"
2610 truehd_encoder_select="lpc"
2611 truemotion2_decoder_select="bswapdsp"
2612 truespeech_decoder_select="bswapdsp"
2613 tscc_decoder_select="zlib"
2614 twinvq_decoder_select="mdct lsp sinewin"
2615 txd_decoder_select="texturedsp"
2616 utvideo_decoder_select="bswapdsp llviddsp"
2617 utvideo_encoder_select="bswapdsp huffman llvidencdsp"
2618 vble_decoder_select="llviddsp"
2619 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 mpegvideo vc1dsp"
2620 vc1image_decoder_select="vc1_decoder"
2621 vorbis_decoder_select="mdct"
2622 vorbis_encoder_select="mdct"
2623 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2624 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2625 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2626 vp6a_decoder_select="vp6_decoder"
2627 vp6f_decoder_select="vp6_decoder"
2628 vp7_decoder_select="h264pred videodsp vp8dsp"
2629 vp8_decoder_select="h264pred videodsp vp8dsp"
2630 vp9_decoder_select="videodsp vp9_parser"
2631 webp_decoder_select="vp8_decoder exif"
2632 wmalossless_decoder_select="llauddsp"
2633 wmapro_decoder_select="mdct sinewin wma_freqs"
2634 wmav1_decoder_select="mdct sinewin wma_freqs"
2635 wmav1_encoder_select="mdct sinewin wma_freqs"
2636 wmav2_decoder_select="mdct sinewin wma_freqs"
2637 wmav2_encoder_select="mdct sinewin wma_freqs"
2638 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2639 wmv1_decoder_select="h263_decoder"
2640 wmv1_encoder_select="h263_encoder"
2641 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2642 wmv2_encoder_select="h263_encoder wmv2dsp"
2643 wmv3_decoder_select="vc1_decoder"
2644 wmv3image_decoder_select="wmv3_decoder"
2645 xma1_decoder_select="wmapro_decoder"
2646 xma2_decoder_select="wmapro_decoder"
2647 zerocodec_decoder_select="zlib"
2648 zlib_decoder_select="zlib"
2649 zlib_encoder_select="zlib"
2650 zmbv_decoder_select="zlib"
2651 zmbv_encoder_select="zlib"
2652
2653 # hardware accelerators
2654 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2655 cuda_deps_any="libdl LoadLibrary"
2656 cuvid_deps="cuda"
2657 d3d11va_deps="d3d11_h dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2658 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode ole32 user32"
2659 videotoolbox_hwaccel_deps="videotoolbox pthreads"
2660 videotoolbox_hwaccel_extralibs="-framework QuartzCore"
2661 xvmc_deps="X11_extensions_XvMClib_h"
2662
2663 h263_vaapi_hwaccel_deps="vaapi"
2664 h263_vaapi_hwaccel_select="h263_decoder"
2665 h263_videotoolbox_hwaccel_deps="videotoolbox"
2666 h263_videotoolbox_hwaccel_select="h263_decoder"
2667 h264_cuvid_hwaccel_deps="cuda cuvid"
2668 h264_cuvid_hwaccel_select="h264_cuvid_decoder"
2669 h264_d3d11va_hwaccel_deps="d3d11va"
2670 h264_d3d11va_hwaccel_select="h264_decoder"
2671 h264_d3d11va2_hwaccel_deps="d3d11va"
2672 h264_d3d11va2_hwaccel_select="h264_decoder"
2673 h264_dxva2_hwaccel_deps="dxva2"
2674 h264_dxva2_hwaccel_select="h264_decoder"
2675 h264_mediacodec_hwaccel_deps="mediacodec"
2676 h264_mmal_hwaccel_deps="mmal"
2677 h264_nvdec_hwaccel_deps="cuda nvdec"
2678 h264_nvdec_hwaccel_select="h264_decoder"
2679 h264_qsv_hwaccel_deps="libmfx"
2680 h264_vaapi_hwaccel_deps="vaapi"
2681 h264_vaapi_hwaccel_select="h264_decoder"
2682 h264_vdpau_hwaccel_deps="vdpau"
2683 h264_vdpau_hwaccel_select="h264_decoder"
2684 h264_videotoolbox_hwaccel_deps="videotoolbox"
2685 h264_videotoolbox_hwaccel_select="h264_decoder"
2686 hevc_cuvid_hwaccel_deps="cuda cuvid"
2687 hevc_cuvid_hwaccel_select="hevc_cuvid_decoder"
2688 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2689 hevc_d3d11va_hwaccel_select="hevc_decoder"
2690 hevc_mediacodec_hwaccel_deps="mediacodec"
2691 hevc_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2692 hevc_d3d11va2_hwaccel_select="hevc_decoder"
2693 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2694 hevc_dxva2_hwaccel_select="hevc_decoder"
2695 hevc_nvdec_hwaccel_deps="cuda nvdec"
2696 hevc_nvdec_hwaccel_select="hevc_decoder"
2697 hevc_qsv_hwaccel_deps="libmfx"
2698 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2699 hevc_vaapi_hwaccel_select="hevc_decoder"
2700 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2701 hevc_vdpau_hwaccel_select="hevc_decoder"
2702 hevc_videotoolbox_hwaccel_deps="videotoolbox"
2703 hevc_videotoolbox_hwaccel_select="hevc_decoder"
2704 mjpeg_cuvid_hwaccel_deps="cuda cuvid"
2705 mjpeg_cuvid_hwaccel_select="mjpeg_cuvid_decoder"
2706 mpeg_xvmc_hwaccel_deps="xvmc"
2707 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2708 mpeg1_cuvid_hwaccel_deps="cuda cuvid"
2709 mpeg1_cuvid_hwaccel_select="mpeg1_cuvid_decoder"
2710 mpeg1_vdpau_hwaccel_deps="vdpau"
2711 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2712 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2713 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2714 mpeg1_xvmc_hwaccel_deps="xvmc"
2715 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2716 mpeg2_cuvid_hwaccel_deps="cuda cuvid"
2717 mpeg2_cuvid_hwaccel_select="mpeg2_cuvid_decoder"
2718 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2719 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2720 mpeg2_d3d11va2_hwaccel_deps="d3d11va"
2721 mpeg2_d3d11va2_hwaccel_select="mpeg2video_decoder"
2722 mpeg2_dxva2_hwaccel_deps="dxva2"
2723 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2724 mpeg2_mediacodec_hwaccel_deps="mediacodec"
2725 mpeg2_mmal_hwaccel_deps="mmal"
2726 mpeg2_qsv_hwaccel_deps="libmfx"
2727 mpeg2_vaapi_hwaccel_deps="vaapi"
2728 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2729 mpeg2_vdpau_hwaccel_deps="vdpau"
2730 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2731 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2732 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2733 mpeg2_xvmc_hwaccel_deps="xvmc"
2734 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2735 mpeg4_cuvid_hwaccel_deps="cuda cuvid"
2736 mpeg4_cuvid_hwaccel_select="mpeg4_cuvid_decoder"
2737 mpeg4_mediacodec_hwaccel_deps="mediacodec"
2738 mpeg4_mmal_hwaccel_deps="mmal"
2739 mpeg4_vaapi_hwaccel_deps="vaapi"
2740 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2741 mpeg4_vdpau_hwaccel_deps="vdpau"
2742 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2743 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2744 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2745 vc1_cuvid_hwaccel_deps="cuda cuvid"
2746 vc1_cuvid_hwaccel_select="vc1_cuvid_decoder"
2747 vc1_d3d11va_hwaccel_deps="d3d11va"
2748 vc1_d3d11va_hwaccel_select="vc1_decoder"
2749 vc1_d3d11va2_hwaccel_deps="d3d11va"
2750 vc1_d3d11va2_hwaccel_select="vc1_decoder"
2751 vc1_dxva2_hwaccel_deps="dxva2"
2752 vc1_dxva2_hwaccel_select="vc1_decoder"
2753 vc1_mmal_hwaccel_deps="mmal"
2754 vc1_qsv_hwaccel_deps="libmfx"
2755 vc1_vaapi_hwaccel_deps="vaapi"
2756 vc1_vaapi_hwaccel_select="vc1_decoder"
2757 vc1_vdpau_hwaccel_deps="vdpau"
2758 vc1_vdpau_hwaccel_select="vc1_decoder"
2759 vp8_cuvid_hwaccel_deps="cuda cuvid"
2760 vp8_cuvid_hwaccel_select="vp8_cuvid_decoder"
2761 vp9_cuvid_hwaccel_deps="cuda cuvid"
2762 vp9_cuvid_hwaccel_select="vp9_cuvid_decoder"
2763 vp8_mediacodec_hwaccel_deps="mediacodec"
2764 vp8_qsv_hwaccel_deps="libmfx"
2765 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2766 vp9_d3d11va_hwaccel_select="vp9_decoder"
2767 vp9_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2768 vp9_d3d11va2_hwaccel_select="vp9_decoder"
2769 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
2770 vp9_dxva2_hwaccel_select="vp9_decoder"
2771 vp9_mediacodec_hwaccel_deps="mediacodec"
2772 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9_bit_depth"
2773 vp9_vaapi_hwaccel_select="vp9_decoder"
2774 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2775 wmv3_d3d11va2_hwaccel_select="vc1_d3d11va2_hwaccel"
2776 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2777 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2778 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2779
2780 # hardware-accelerated codecs
2781 omx_deps="libdl pthreads"
2782 omx_rpi_select="omx"
2783 qsv_deps="libmfx"
2784 qsvdec_select="qsv"
2785 qsvenc_select="qsv"
2786 vaapi_encode_deps="vaapi"
2787 v4l2_m2m_deps_any="linux_videodev2_h"
2788
2789 hwupload_cuda_filter_deps="cuda"
2790 scale_npp_filter_deps="cuda libnpp"
2791 scale_cuda_filter_deps="cuda_sdk"
2792 thumbnail_cuda_filter_deps="cuda_sdk"
2793
2794 nvenc_deps="cuda"
2795 nvenc_deps_any="libdl LoadLibrary"
2796 nvenc_encoder_deps="nvenc"
2797
2798 h263_v4l2m2m_decoder_deps="v4l2_m2m h263_v4l2_m2m"
2799 h263_v4l2m2m_encoder_deps="v4l2_m2m h263_v4l2_m2m"
2800 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2801 h264_cuvid_decoder_deps="cuda cuvid"
2802 h264_cuvid_decoder_select="h264_mp4toannexb_bsf"
2803 h264_mediacodec_decoder_deps="mediacodec"
2804 h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
2805 h264_mmal_decoder_deps="mmal"
2806 h264_nvenc_encoder_deps="nvenc"
2807 h264_omx_encoder_deps="omx"
2808 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2809 h264_qsv_encoder_select="qsvenc"
2810 h264_rkmpp_decoder_deps="rkmpp"
2811 h264_rkmpp_decoder_select="h264_mp4toannexb_bsf"
2812 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2813 h264_vaapi_encoder_select="cbs_h264 vaapi_encode"
2814 h264_v4l2m2m_decoder_deps="v4l2_m2m h264_v4l2_m2m"
2815 h264_v4l2m2m_encoder_deps="v4l2_m2m h264_v4l2_m2m"
2816 hevc_cuvid_decoder_deps="cuda cuvid"
2817 hevc_cuvid_decoder_select="hevc_mp4toannexb_bsf"
2818 hevc_mediacodec_decoder_deps="mediacodec"
2819 hevc_mediacodec_decoder_select="hevc_mp4toannexb_bsf hevc_parser"
2820 hevc_nvenc_encoder_deps="nvenc"
2821 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec hevc_qsv_hwaccel"
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_qsv_encoder_deps="libmfx"
2831 mjpeg_qsv_encoder_select="qsvenc"
2832 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2833 mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
2834 mpeg1_cuvid_decoder_deps="cuda cuvid"
2835 mpeg1_v4l2m2m_decoder_deps="v4l2_m2m mpeg1_v4l2_m2m"
2836 mpeg2_crystalhd_decoder_select="crystalhd"
2837 mpeg2_cuvid_decoder_deps="cuda cuvid"
2838 mpeg2_mmal_decoder_deps="mmal"
2839 mpeg2_mediacodec_decoder_deps="mediacodec"
2840 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel"
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_qsv_decoder_select="qsvdec vc1_qsv_hwaccel vc1_parser"
2859 vc1_v4l2m2m_decoder_deps="v4l2_m2m vc1_v4l2_m2m"
2860 vp8_cuvid_decoder_deps="cuda cuvid"
2861 vp8_mediacodec_decoder_deps="mediacodec"
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 aac_parser_select="adts_header"
2878 h264_parser_select="golomb h264dsp h264parse"
2879 hevc_parser_select="hevcparse"
2880 mpegaudio_parser_select="mpegaudioheader"
2881 mpegvideo_parser_select="mpegvideo"
2882 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
2883 vc1_parser_select="vc1dsp"
2884
2885 # bitstream_filters
2886 aac_adtstoasc_bsf_select="adts_header"
2887 h264_metadata_bsf_select="cbs_h264"
2888 h264_redundant_pps_bsf_select="cbs_h264"
2889 hevc_metadata_bsf_select="cbs_h265"
2890 mjpeg2jpeg_bsf_select="jpegtables"
2891 mpeg2_metadata_bsf_select="cbs_mpeg2"
2892 trace_headers_bsf_select="cbs_h264 cbs_h265 cbs_mpeg2"
2893
2894 # external libraries
2895 aac_at_decoder_deps="audiotoolbox"
2896 ac3_at_decoder_deps="audiotoolbox"
2897 ac3_at_decoder_select="ac3_parser"
2898 adpcm_ima_qt_at_decoder_deps="audiotoolbox"
2899 alac_at_decoder_deps="audiotoolbox"
2900 amr_nb_at_decoder_deps="audiotoolbox"
2901 avisynth_deps_any="libdl LoadLibrary"
2902 avisynth_demuxer_deps="avisynth"
2903 avisynth_demuxer_select="riffdec"
2904 eac3_at_decoder_deps="audiotoolbox"
2905 eac3_at_decoder_select="ac3_parser"
2906 gsm_ms_at_decoder_deps="audiotoolbox"
2907 ilbc_at_decoder_deps="audiotoolbox"
2908 mp1_at_decoder_deps="audiotoolbox"
2909 mp2_at_decoder_deps="audiotoolbox"
2910 mp3_at_decoder_deps="audiotoolbox"
2911 mp1_at_decoder_select="mpegaudioheader"
2912 mp2_at_decoder_select="mpegaudioheader"
2913 mp3_at_decoder_select="mpegaudioheader"
2914 pcm_alaw_at_decoder_deps="audiotoolbox"
2915 pcm_mulaw_at_decoder_deps="audiotoolbox"
2916 qdmc_at_decoder_deps="audiotoolbox"
2917 qdm2_at_decoder_deps="audiotoolbox"
2918 aac_at_encoder_deps="audiotoolbox"
2919 aac_at_encoder_select="audio_frame_queue"
2920 alac_at_encoder_deps="audiotoolbox"
2921 alac_at_encoder_select="audio_frame_queue"
2922 ilbc_at_encoder_deps="audiotoolbox"
2923 ilbc_at_encoder_select="audio_frame_queue"
2924 pcm_alaw_at_encoder_deps="audiotoolbox"
2925 pcm_alaw_at_encoder_select="audio_frame_queue"
2926 pcm_mulaw_at_encoder_deps="audiotoolbox"
2927 pcm_mulaw_at_encoder_select="audio_frame_queue"
2928 chromaprint_muxer_deps="chromaprint"
2929 h264_videotoolbox_encoder_deps="pthreads"
2930 h264_videotoolbox_encoder_select="videotoolbox_encoder"
2931 libcelt_decoder_deps="libcelt"
2932 libfdk_aac_decoder_deps="libfdk_aac"
2933 libfdk_aac_encoder_deps="libfdk_aac"
2934 libfdk_aac_encoder_select="audio_frame_queue"
2935 libgme_demuxer_deps="libgme"
2936 libgsm_decoder_deps="libgsm"
2937 libgsm_encoder_deps="libgsm"
2938 libgsm_ms_decoder_deps="libgsm"
2939 libgsm_ms_encoder_deps="libgsm"
2940 libilbc_decoder_deps="libilbc"
2941 libilbc_encoder_deps="libilbc"
2942 libkvazaar_encoder_deps="libkvazaar"
2943 libmodplug_demuxer_deps="libmodplug"
2944 libmp3lame_encoder_deps="libmp3lame"
2945 libmp3lame_encoder_select="audio_frame_queue mpegaudioheader"
2946 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2947 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2948 libopencore_amrnb_encoder_select="audio_frame_queue"
2949 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2950 libopenh264_decoder_deps="libopenh264"
2951 libopenh264_decoder_select="h264_mp4toannexb_bsf"
2952 libopenh264_encoder_deps="libopenh264"
2953 libopenjpeg_decoder_deps="libopenjpeg"
2954 libopenjpeg_encoder_deps="libopenjpeg"
2955 libopenmpt_demuxer_deps="libopenmpt"
2956 libopus_decoder_deps="libopus"
2957 libopus_encoder_deps="libopus"
2958 libopus_encoder_select="audio_frame_queue"
2959 librsvg_decoder_deps="librsvg"
2960 libshine_encoder_deps="libshine"
2961 libshine_encoder_select="audio_frame_queue"
2962 libspeex_decoder_deps="libspeex"
2963 libspeex_encoder_deps="libspeex"
2964 libspeex_encoder_select="audio_frame_queue"
2965 libtheora_encoder_deps="libtheora"
2966 libtwolame_encoder_deps="libtwolame"
2967 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2968 libvorbis_decoder_deps="libvorbis"
2969 libvorbis_encoder_deps="libvorbis libvorbisenc"
2970 libvorbis_encoder_select="audio_frame_queue"
2971 libvpx_vp8_decoder_deps="libvpx"
2972 libvpx_vp8_encoder_deps="libvpx"
2973 libvpx_vp9_decoder_deps="libvpx"
2974 libvpx_vp9_encoder_deps="libvpx"
2975 libwavpack_encoder_deps="libwavpack"
2976 libwavpack_encoder_select="audio_frame_queue"
2977 libwebp_encoder_deps="libwebp"
2978 libwebp_anim_encoder_deps="libwebp"
2979 libx262_encoder_deps="libx262"
2980 libx264_encoder_deps="libx264"
2981 libx264rgb_encoder_deps="libx264 x264_csp_bgr"
2982 libx264rgb_encoder_select="libx264_encoder"
2983 libx265_encoder_deps="libx265"
2984 libxavs_encoder_deps="libxavs"
2985 libxvid_encoder_deps="libxvid"
2986 libzvbi_teletext_decoder_deps="libzvbi"
2987 videotoolbox_suggest="coreservices"
2988 videotoolbox_deps="corefoundation coremedia corevideo"
2989 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
2990
2991 # demuxers / muxers
2992 ac3_demuxer_select="ac3_parser"
2993 aiff_muxer_select="iso_media"
2994 asf_demuxer_select="riffdec"
2995 asf_o_demuxer_select="riffdec"
2996 asf_muxer_select="riffenc"
2997 asf_stream_muxer_select="asf_muxer"
2998 avi_demuxer_select="iso_media riffdec exif"
2999 avi_muxer_select="riffenc"
3000 caf_demuxer_select="iso_media riffdec"
3001 caf_muxer_select="iso_media"
3002 dash_muxer_select="mp4_muxer"
3003 dash_demuxer_deps="libxml2"
3004 dirac_demuxer_select="dirac_parser"
3005 dts_demuxer_select="dca_parser"
3006 dtshd_demuxer_select="dca_parser"
3007 dv_demuxer_select="dvprofile"
3008 dv_muxer_select="dvprofile"
3009 dxa_demuxer_select="riffdec"
3010 eac3_demuxer_select="ac3_parser"
3011 f4v_muxer_select="mov_muxer"
3012 fifo_muxer_deps="threads"
3013 flac_demuxer_select="flac_parser"
3014 hds_muxer_select="flv_muxer"
3015 hls_muxer_select="mpegts_muxer"
3016 hls_muxer_suggest="gcrypt openssl"
3017 image2_alias_pix_demuxer_select="image2_demuxer"
3018 image2_brender_pix_demuxer_select="image2_demuxer"
3019 ipod_muxer_select="mov_muxer"
3020 ismv_muxer_select="mov_muxer"
3021 matroska_audio_muxer_select="matroska_muxer"
3022 matroska_demuxer_select="iso_media riffdec"
3023 matroska_demuxer_suggest="bzlib lzo zlib"
3024 matroska_muxer_select="iso_media riffenc"
3025 mmf_muxer_select="riffenc"
3026 mov_demuxer_select="iso_media riffdec"
3027 mov_demuxer_suggest="zlib"
3028 mov_muxer_select="iso_media riffenc rtpenc_chain"
3029 mp3_demuxer_select="mpegaudio_parser"
3030 mp3_muxer_select="mpegaudioheader"
3031 mp4_muxer_select="mov_muxer"
3032 mpegts_demuxer_select="iso_media"
3033 mpegts_muxer_select="adts_muxer latm_muxer"
3034 mpegtsraw_demuxer_select="mpegts_demuxer"
3035 mxf_d10_muxer_select="mxf_muxer"
3036 mxf_opatom_muxer_select="mxf_muxer"
3037 nut_muxer_select="riffenc"
3038 nuv_demuxer_select="riffdec"
3039 oga_muxer_select="ogg_muxer"
3040 ogg_demuxer_select="dirac_parse"
3041 ogv_muxer_select="ogg_muxer"
3042 opus_muxer_select="ogg_muxer"
3043 psp_muxer_select="mov_muxer"
3044 rtp_demuxer_select="sdp_demuxer"
3045 rtp_muxer_select="golomb"
3046 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
3047 rtsp_demuxer_select="http_protocol rtpdec"
3048 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
3049 sap_demuxer_select="sdp_demuxer"
3050 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
3051 sdp_demuxer_select="rtpdec"
3052 smoothstreaming_muxer_select="ismv_muxer"
3053 spdif_demuxer_select="adts_header"
3054 spdif_muxer_select="adts_header"
3055 spx_muxer_select="ogg_muxer"
3056 swf_demuxer_suggest="zlib"
3057 tak_demuxer_select="tak_parser"
3058 tg2_muxer_select="mov_muxer"
3059 tgp_muxer_select="mov_muxer"
3060 vobsub_demuxer_select="mpegps_demuxer"
3061 w64_demuxer_select="wav_demuxer"
3062 w64_muxer_select="wav_muxer"
3063 wav_demuxer_select="riffdec"
3064 wav_muxer_select="riffenc"
3065 webm_muxer_select="iso_media riffenc"
3066 webm_dash_manifest_demuxer_select="matroska_demuxer"
3067 wtv_demuxer_select="mpegts_demuxer riffdec"
3068 wtv_muxer_select="mpegts_muxer riffenc"
3069 xmv_demuxer_select="riffdec"
3070 xwma_demuxer_select="riffdec"
3071
3072 # indevs / outdevs
3073 alsa_indev_deps="alsa"
3074 alsa_outdev_deps="alsa"
3075 avfoundation_indev_deps="avfoundation corevideo coremedia pthreads"
3076 avfoundation_indev_suggest="coregraphics applicationservices"
3077 avfoundation_indev_extralibs="-framework Foundation"
3078 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
3079 caca_outdev_deps="libcaca"
3080 decklink_deps_any="libdl LoadLibrary"
3081 decklink_indev_deps="decklink threads"
3082 decklink_indev_extralibs="-lstdc++"
3083 decklink_outdev_deps="decklink threads"
3084 decklink_outdev_extralibs="-lstdc++"
3085 libndi_newtek_indev_deps="libndi_newtek"
3086 libndi_newtek_indev_extralibs="-lndi"
3087 libndi_newtek_outdev_deps="libndi_newtek"
3088 libndi_newtek_outdev_extralibs="-lndi"
3089 dshow_indev_deps="IBaseFilter"
3090 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
3091 fbdev_indev_deps="linux_fb_h"
3092 fbdev_outdev_deps="linux_fb_h"
3093 gdigrab_indev_deps="CreateDIBSection"
3094 gdigrab_indev_extralibs="-lgdi32"
3095 gdigrab_indev_select="bmp_decoder"
3096 iec61883_indev_deps="libiec61883"
3097 jack_indev_deps="libjack"
3098 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
3099 kmsgrab_indev_deps="libdrm"
3100 lavfi_indev_deps="avfilter"
3101 libcdio_indev_deps="libcdio"
3102 libdc1394_indev_deps="libdc1394"
3103 openal_indev_deps="openal"
3104 opengl_outdev_deps="opengl"
3105 oss_indev_deps_any="soundcard_h sys_soundcard_h"
3106 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
3107 pulse_indev_deps="libpulse"
3108 pulse_outdev_deps="libpulse"
3109 sdl2_outdev_deps="sdl2"
3110 sndio_indev_deps="sndio"
3111 sndio_outdev_deps="sndio"
3112 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
3113 v4l2_indev_suggest="libv4l2"
3114 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
3115 v4l2_outdev_suggest="libv4l2"
3116 vfwcap_indev_deps="vfw32 vfwcap_defines"
3117 xcbgrab_indev_deps="libxcb"
3118 xcbgrab_indev_suggest="libxcb_shm libxcb_shape libxcb_xfixes"
3119 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
3120 xv_outdev_extralibs="-lXv -lX11 -lXext"
3121
3122 # protocols
3123 async_protocol_deps="threads"
3124 bluray_protocol_deps="libbluray"
3125 ffrtmpcrypt_protocol_conflict="librtmp_protocol"
3126 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
3127 ffrtmpcrypt_protocol_select="tcp_protocol"
3128 ffrtmphttp_protocol_conflict="librtmp_protocol"
3129 ffrtmphttp_protocol_select="http_protocol"
3130 ftp_protocol_select="tcp_protocol"
3131 gopher_protocol_select="network"
3132 http_protocol_select="tcp_protocol"
3133 http_protocol_suggest="zlib"
3134 httpproxy_protocol_select="tcp_protocol"
3135 httpproxy_protocol_suggest="zlib"
3136 https_protocol_select="tls_protocol"
3137 https_protocol_suggest="zlib"
3138 icecast_protocol_select="http_protocol"
3139 librtmp_protocol_deps="librtmp"
3140 librtmpe_protocol_deps="librtmp"
3141 librtmps_protocol_deps="librtmp"
3142 librtmpt_protocol_deps="librtmp"
3143 librtmpte_protocol_deps="librtmp"
3144 libsmbclient_protocol_deps="libsmbclient gplv3"
3145 libssh_protocol_deps="libssh"
3146 mmsh_protocol_select="http_protocol"
3147 mmst_protocol_select="network"
3148 rtmp_protocol_conflict="librtmp_protocol"
3149 rtmp_protocol_select="tcp_protocol"
3150 rtmp_protocol_suggest="zlib"
3151 rtmpe_protocol_select="ffrtmpcrypt_protocol"
3152 rtmpe_protocol_suggest="zlib"
3153 rtmps_protocol_conflict="librtmp_protocol"
3154 rtmps_protocol_select="tls_protocol"
3155 rtmps_protocol_suggest="zlib"
3156 rtmpt_protocol_select="ffrtmphttp_protocol"
3157 rtmpt_protocol_suggest="zlib"
3158 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
3159 rtmpte_protocol_suggest="zlib"
3160 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
3161 rtmpts_protocol_suggest="zlib"
3162 rtp_protocol_select="udp_protocol"
3163 schannel_conflict="openssl gnutls"
3164 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
3165 sctp_protocol_select="network"
3166 securetransport_conflict="openssl gnutls"
3167 srtp_protocol_select="rtp_protocol srtp"
3168 tcp_protocol_select="network"
3169 tls_protocol_deps_any="gnutls openssl schannel securetransport"
3170 tls_protocol_select="tcp_protocol"
3171 udp_protocol_select="network"
3172 udplite_protocol_select="network"
3173 unix_protocol_deps="sys_un_h"
3174 unix_protocol_select="network"
3175
3176 # filters
3177 afftfilt_filter_deps="avcodec"
3178 afftfilt_filter_select="fft"
3179 afir_filter_deps="avcodec"
3180 afir_filter_select="fft"
3181 amovie_filter_deps="avcodec avformat"
3182 aresample_filter_deps="swresample"
3183 ass_filter_deps="libass"
3184 atempo_filter_deps="avcodec"
3185 atempo_filter_select="rdft"
3186 azmq_filter_deps="libzmq"
3187 blackframe_filter_deps="gpl"
3188 boxblur_filter_deps="gpl"
3189 bs2b_filter_deps="libbs2b"
3190 colormatrix_filter_deps="gpl"
3191 coreimage_filter_deps="coreimage appkit"
3192 coreimage_filter_extralibs="-framework OpenGL"
3193 coreimagesrc_filter_deps="coreimage appkit"
3194 coreimagesrc_filter_extralibs="-framework OpenGL"
3195 cover_rect_filter_deps="avcodec avformat gpl"
3196 cropdetect_filter_deps="gpl"
3197 deinterlace_qsv_filter_deps="libmfx"
3198 deinterlace_vaapi_filter_deps="vaapi"
3199 delogo_filter_deps="gpl"
3200 deshake_filter_select="pixelutils"
3201 deshake_filter_suggest="opencl"
3202 drawtext_filter_deps="libfreetype"
3203 drawtext_filter_suggest="libfontconfig libfribidi"
3204 elbg_filter_deps="avcodec"
3205 eq_filter_deps="gpl"
3206 fftfilt_filter_deps="avcodec"
3207 fftfilt_filter_select="rdft"
3208 find_rect_filter_deps="avcodec avformat gpl"
3209 firequalizer_filter_deps="avcodec"
3210 firequalizer_filter_select="rdft"
3211 flite_filter_deps="libflite"
3212 framerate_filter_select="pixelutils"
3213 frei0r_filter_deps="frei0r libdl"
3214 frei0r_src_filter_deps="frei0r libdl"
3215 fspp_filter_deps="gpl"
3216 geq_filter_deps="gpl"
3217 histeq_filter_deps="gpl"
3218 hqdn3d_filter_deps="gpl"
3219 interlace_filter_deps="gpl"
3220 kerndeint_filter_deps="gpl"
3221 ladspa_filter_deps="ladspa libdl"
3222 mcdeint_filter_deps="avcodec gpl"
3223 movie_filter_deps="avcodec avformat"
3224 mpdecimate_filter_deps="gpl"
3225 mpdecimate_filter_select="pixelutils"
3226 mptestsrc_filter_deps="gpl"
3227 negate_filter_deps="lut_filter"
3228 nnedi_filter_deps="gpl"
3229 ocr_filter_deps="libtesseract"
3230 ocv_filter_deps="libopencv"
3231 owdenoise_filter_deps="gpl"
3232 pan_filter_deps="swresample"
3233 perspective_filter_deps="gpl"
3234 phase_filter_deps="gpl"
3235 pp7_filter_deps="gpl"
3236 pp_filter_deps="gpl postproc"
3237 pullup_filter_deps="gpl"
3238 removelogo_filter_deps="avcodec avformat swscale"
3239 repeatfields_filter_deps="gpl"
3240 resample_filter_deps="avresample"
3241 rubberband_filter_deps="librubberband"
3242 sab_filter_deps="gpl swscale"
3243 scale2ref_filter_deps="swscale"
3244 scale_filter_deps="swscale"
3245 scale_qsv_filter_deps="libmfx"
3246 select_filter_select="pixelutils"
3247 showcqt_filter_deps="avcodec avformat swscale"
3248 showcqt_filter_suggest="libfontconfig libfreetype"
3249 showcqt_filter_select="fft"
3250 showfreqs_filter_deps="avcodec"
3251 showfreqs_filter_select="fft"
3252 showspectrum_filter_deps="avcodec"
3253 showspectrum_filter_select="fft"
3254 showspectrumpic_filter_deps="avcodec"
3255 showspectrumpic_filter_select="fft"
3256 signature_filter_deps="gpl avcodec avformat"
3257 smartblur_filter_deps="gpl swscale"
3258 sofalizer_filter_deps="libmysofa avcodec"
3259 sofalizer_filter_select="fft"
3260 spectrumsynth_filter_deps="avcodec"
3261 spectrumsynth_filter_select="fft"
3262 spp_filter_deps="gpl avcodec"
3263 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3264 stereo3d_filter_deps="gpl"
3265 subtitles_filter_deps="avformat avcodec libass"
3266 super2xsai_filter_deps="gpl"
3267 pixfmts_super2xsai_test_deps="super2xsai_filter"
3268 tinterlace_filter_deps="gpl"
3269 tinterlace_merge_test_deps="tinterlace_filter"
3270 tinterlace_pad_test_deps="tinterlace_filter"
3271 tonemap_filter_deps="const_nan"
3272 uspp_filter_deps="gpl avcodec"
3273 unsharp_filter_suggest="opencl"
3274 vaguedenoiser_filter_deps="gpl"
3275 vidstabdetect_filter_deps="libvidstab"
3276 vidstabtransform_filter_deps="libvidstab"
3277 libvmaf_filter_deps="libvmaf"
3278 zmq_filter_deps="libzmq"
3279 zoompan_filter_deps="swscale"
3280 zscale_filter_deps="libzimg const_nan"
3281 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3282
3283 # examples
3284 avio_dir_cmd_deps="avformat avutil"
3285 avio_reading_deps="avformat avcodec avutil"
3286 decode_audio_example_deps="avcodec avutil"
3287 decode_video_example_deps="avcodec avutil"
3288 demuxing_decoding_example_deps="avcodec avformat avutil"
3289 encode_audio_example_deps="avcodec avutil"
3290 encode_video_example_deps="avcodec avutil"
3291 extract_mvs_example_deps="avcodec avformat avutil"
3292 filter_audio_example_deps="avfilter avutil"
3293 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3294 filtering_video_example_deps="avfilter avcodec avformat avutil"
3295 http_multiclient_example_deps="avformat avutil fork"
3296 hw_decode_example_deps="avcodec avformat avutil"
3297 metadata_example_deps="avformat avutil"
3298 muxing_example_deps="avcodec avformat avutil swscale"
3299 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
3300 remuxing_example_deps="avcodec avformat avutil"
3301 resampling_audio_example_deps="avutil swresample"
3302 scaling_video_example_deps="avutil swscale"
3303 transcode_aac_example_deps="avcodec avformat swresample"
3304 transcoding_example_deps="avfilter avcodec avformat avutil"
3305
3306 # EXTRALIBS_LIST
3307 cpu_init_extralibs="pthreads_extralibs"
3308 cws2fws_extralibs="zlib_extralibs"
3309
3310 # libraries, in linking order
3311 avcodec_deps="avutil"
3312 avcodec_suggest="libm"
3313 avcodec_select="null_bsf"
3314 avdevice_deps="avformat avcodec avutil"
3315 avdevice_suggest="libm"
3316 avfilter_deps="avutil"
3317 avfilter_suggest="libm"
3318 avformat_deps="avcodec avutil"
3319 avformat_suggest="libm network zlib"
3320 avresample_deps="avutil"
3321 avresample_suggest="libm"
3322 avutil_suggest="clock_gettime cuda libm libdrm libmfx opencl user32 vaapi videotoolbox corefoundation corevideo coremedia wincrypt"
3323 postproc_deps="avutil gpl"
3324 postproc_suggest="libm"
3325 swresample_deps="avutil"
3326 swresample_suggest="libm libsoxr"
3327 swscale_deps="avutil"
3328 swscale_suggest="libm"
3329
3330 avcodec_extralibs="pthreads_extralibs iconv_extralibs"
3331 avfilter_extralibs="pthreads_extralibs"
3332 avutil_extralibs="d3d11va_extralibs nanosleep_extralibs pthreads_extralibs vaapi_drm_extralibs vaapi_x11_extralibs vdpau_x11_extralibs"
3333
3334 # programs
3335 ffmpeg_deps="avcodec avfilter avformat swresample"
3336 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3337                null_filter
3338                trim_filter"
3339 ffmpeg_suggest="ole32 psapi shell32"
3340 ffplay_deps="avcodec avformat swscale swresample sdl2"
3341 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3342 ffplay_suggest="shell32"
3343 ffprobe_deps="avcodec avformat"
3344 ffprobe_suggest="shell32"
3345 ffserver_deps="avformat fork sarestart"
3346 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
3347
3348 # documentation
3349 podpages_deps="perl"
3350 manpages_deps="perl pod2man"
3351 htmlpages_deps="perl"
3352 htmlpages_deps_any="makeinfo_html texi2html"
3353 txtpages_deps="perl makeinfo"
3354 doc_deps_any="manpages htmlpages podpages txtpages"
3355
3356 # default parameters
3357
3358 logfile="ffbuild/config.log"
3359
3360 # installation paths
3361 prefix_default="/usr/local"
3362 bindir_default='${prefix}/bin'
3363 datadir_default='${prefix}/share/ffmpeg'
3364 docdir_default='${prefix}/share/doc/ffmpeg'
3365 incdir_default='${prefix}/include'
3366 libdir_default='${prefix}/lib'
3367 mandir_default='${prefix}/share/man'
3368
3369 # toolchain
3370 ar_default="ar"
3371 cc_default="gcc"
3372 cxx_default="g++"
3373 host_cc_default="gcc"
3374 doxygen_default="doxygen"
3375 install="install"
3376 ln_s_default="ln -s -f"
3377 nm_default="nm -g"
3378 pkg_config_default=pkg-config
3379 ranlib_default="ranlib"
3380 strip_default="strip"
3381 version_script='--version-script'
3382 x86asmexe_default="nasm"
3383 windres_default="windres"
3384 nvcc_default="nvcc"
3385 nvccflags_default="-gencode arch=compute_30,code=sm_30 -O2"
3386 striptype="direct"
3387
3388 # OS
3389 target_os_default=$(tolower $(uname -s))
3390 host_os=$target_os_default
3391
3392 # machine
3393 if test "$target_os_default" = aix; then
3394     arch_default=$(uname -p)
3395     strip_default="strip -X32_64"
3396 else
3397     arch_default=$(uname -m)
3398 fi
3399 cpu="generic"
3400 intrinsics="none"
3401
3402 # configurable options
3403 enable $PROGRAM_LIST
3404 enable $DOCUMENT_LIST
3405 enable $EXAMPLE_LIST
3406 enable $(filter_out avresample $LIBRARY_LIST)
3407 enable stripping
3408
3409 enable asm
3410 enable debug
3411 enable doc
3412 enable faan faandct faanidct
3413 enable optimizations
3414 enable runtime_cpudetect
3415 enable safe_bitstream_reader
3416 enable static
3417 enable swscale_alpha
3418 enable valgrind_backtrace
3419
3420 sws_max_filter_size_default=256
3421 set_default sws_max_filter_size
3422
3423 # internal components are enabled by default
3424 enable $EXTRALIBS_LIST
3425
3426 # Avoid external, non-system, libraries getting enabled by dependency resolution
3427 disable $EXTERNAL_LIBRARY_LIST $HWACCEL_LIBRARY_LIST
3428
3429 # build settings
3430 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3431 LIBPREF="lib"
3432 LIBSUF=".a"
3433 FULLNAME='$(NAME)$(BUILDSUF)'
3434 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3435 SLIBPREF="lib"
3436 SLIBSUF=".so"
3437 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3438 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3439 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3440 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3441 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3442 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3443 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
3444
3445 asflags_filter=echo
3446 cflags_filter=echo
3447 ldflags_filter=echo
3448
3449 AS_C='-c'
3450 AS_O='-o $@'
3451 CC_C='-c'
3452 CC_E='-E -o $@'
3453 CC_O='-o $@'
3454 CXX_C='-c'
3455 CXX_O='-o $@'
3456 OBJCC_C='-c'
3457 OBJCC_E='-E -o $@'
3458 OBJCC_O='-o $@'
3459 X86ASM_O='-o $@'
3460 LD_O='-o $@'
3461 LD_LIB='-l%'
3462 LD_PATH='-L'
3463 HOSTCC_C='-c'
3464 HOSTCC_E='-E -o $@'
3465 HOSTCC_O='-o $@'
3466 HOSTLD_O='-o $@'
3467 NVCC_C='-c'
3468 NVCC_O='-o $@'
3469
3470 host_extralibs='-lm'
3471 host_cflags_filter=echo
3472 host_ldflags_filter=echo
3473
3474 target_path='$(CURDIR)'
3475
3476 # since the object filename is not given with the -MM flag, the compiler
3477 # is only able to print the basename, and we must add the path ourselves
3478 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3479 DEPFLAGS='-MM'
3480
3481 mkdir -p ffbuild
3482
3483 # find source path
3484 if test -f configure; then
3485     source_path=.
3486 else
3487     source_path=$(cd $(dirname "$0"); pwd)
3488     case "$source_path" in
3489         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3490     esac
3491     test -e "$source_path/config.h" &&
3492         die "Out of tree builds are impossible with config.h in source dir."
3493 fi
3494
3495 for v in "$@"; do
3496     r=${v#*=}
3497     l=${v%"$r"}
3498     r=$(sh_quote "$r")
3499     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3500 done
3501
3502 find_things(){
3503     thing=$1
3504     pattern=$2
3505     file=$source_path/$3
3506     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
3507 }
3508
3509 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
3510 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
3511 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
3512 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
3513 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
3514 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
3515 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
3516 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
3517 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
3518
3519 find_things_extern(){
3520     thing=$1
3521     pattern=$2
3522     file=$source_path/$3
3523     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
3524 }
3525
3526 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3527 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3528
3529 AVCODEC_COMPONENTS_LIST="
3530     $BSF_LIST
3531     $DECODER_LIST
3532     $ENCODER_LIST
3533     $HWACCEL_LIST
3534     $PARSER_LIST
3535 "
3536
3537 AVDEVICE_COMPONENTS_LIST="
3538     $INDEV_LIST
3539     $OUTDEV_LIST
3540 "
3541
3542 AVFILTER_COMPONENTS_LIST="
3543     $FILTER_LIST
3544 "
3545
3546 AVFORMAT_COMPONENTS_LIST="
3547     $DEMUXER_LIST
3548     $MUXER_LIST
3549     $PROTOCOL_LIST
3550 "
3551
3552 ALL_COMPONENTS="
3553     $AVCODEC_COMPONENTS_LIST
3554     $AVDEVICE_COMPONENTS_LIST
3555     $AVFILTER_COMPONENTS_LIST
3556     $AVFORMAT_COMPONENTS_LIST
3557 "
3558
3559 for n in $COMPONENT_LIST; do
3560     v=$(toupper ${n%s})_LIST
3561     eval enable \$$v
3562     eval ${n}_if_any="\$$v"
3563 done
3564
3565 enable $ARCH_EXT_LIST
3566
3567 die_unknown(){
3568     echo "Unknown option \"$1\"."
3569     echo "See $0 --help for available options."
3570     exit 1
3571 }
3572
3573 print_in_columns() {
3574     cols=$(expr $ncols / 24)
3575     cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
3576 }
3577
3578 show_list() {
3579     suffix=_$1
3580     shift
3581     echo $* | sed s/$suffix//g | print_in_columns
3582     exit 0
3583 }
3584
3585 rand_list(){
3586     IFS=', '
3587     set -- $*
3588     unset IFS
3589     for thing; do
3590         comp=${thing%:*}
3591         prob=${thing#$comp}
3592         prob=${prob#:}
3593         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3594         echo "prob ${prob:-0.5}"
3595         printf '%s\n' $comp
3596     done
3597 }
3598
3599 do_random(){
3600     action=$1
3601     shift
3602     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3603     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3604 }
3605
3606 for opt do
3607     optval="${opt#*=}"
3608     case "$opt" in
3609         --extra-ldflags=*)
3610             add_ldflags $optval
3611         ;;
3612         --extra-ldexeflags=*)
3613             add_ldexeflags $optval
3614         ;;
3615         --extra-ldsoflags=*)
3616             add_ldsoflags $optval
3617         ;;
3618         --extra-ldlibflags=*)
3619             warn "The --extra-ldlibflags option is only provided for compatibility and will be\n"\
3620                  "removed in the future. Use --extra-ldsoflags instead."
3621             add_ldsoflags $optval
3622         ;;
3623         --extra-libs=*)
3624             add_extralibs $optval
3625         ;;
3626         --disable-devices)
3627             disable $INDEV_LIST $OUTDEV_LIST
3628         ;;
3629         --enable-debug=*)
3630             debuglevel="$optval"
3631         ;;
3632         --disable-programs)
3633             disable $PROGRAM_LIST
3634         ;;
3635         --disable-everything)
3636             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3637         ;;
3638         --disable-all)
3639             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3640             disable $LIBRARY_LIST $PROGRAM_LIST doc
3641             enable avutil
3642         ;;
3643         --enable-random|--disable-random)
3644             action=${opt%%-random}
3645             do_random ${action#--} $COMPONENT_LIST
3646         ;;
3647         --enable-random=*|--disable-random=*)
3648             action=${opt%%-random=*}
3649             do_random ${action#--} $optval
3650         ;;
3651         --enable-sdl)
3652             enable sdl2
3653         ;;
3654         --enable-*=*|--disable-*=*)
3655             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3656             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3657             eval list=\$$(toupper $thing)_LIST
3658             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3659             list=$(filter "$name" $list)
3660             [ "$list" = "" ] && warn "Option $opt did not match anything"
3661             $action $list
3662         ;;
3663         --enable-yasm|--disable-yasm)
3664             warn "The ${opt} option is only provided for compatibility and will be\n"\
3665                  "removed in the future. Use --enable-x86asm / --disable-x86asm instead."
3666             test $opt = --enable-yasm && x86asm=yes || x86asm=no
3667         ;;
3668         --yasmexe=*)
3669             warn "The --yasmexe option is only provided for compatibility and will be\n"\
3670                  "removed in the future. Use --x86asmexe instead."
3671             x86asmexe="$optval"
3672         ;;
3673         --enable-?*|--disable-?*)
3674             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3675             if is_in $option $COMPONENT_LIST; then
3676                 test $action = disable && action=unset
3677                 eval $action \$$(toupper ${option%s})_LIST
3678             elif is_in $option $CMDLINE_SELECT; then
3679                 $action $option
3680             else
3681                 die_unknown $opt
3682             fi
3683         ;;
3684         --list-*)
3685             NAME="${opt#--list-}"
3686             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3687             NAME=${NAME%s}
3688             eval show_list $NAME \$$(toupper $NAME)_LIST
3689         ;;
3690         --help|-h) show_help
3691         ;;
3692         --quiet|-q) quiet=yes
3693         ;;
3694         --fatal-warnings) enable fatal_warnings
3695         ;;
3696         --libfuzzer=*)
3697             libfuzzer_path="$optval"
3698         ;;
3699         *)
3700             optname="${opt%%=*}"
3701             optname="${optname#--}"
3702             optname=$(echo "$optname" | sed 's/-/_/g')
3703             if is_in $optname $CMDLINE_SET; then
3704                 eval $optname='$optval'
3705             elif is_in $optname $CMDLINE_APPEND; then
3706                 append $optname "$optval"
3707             else
3708                 die_unknown $opt
3709             fi
3710         ;;
3711     esac
3712 done
3713
3714 for e in $env; do
3715     eval "export $e"
3716 done
3717
3718 if disabled autodetect; then
3719
3720     # Unless iconv is explicitely disabled by the user, we still want to probe
3721     # for the iconv from the libc.
3722     disabled iconv || enable libc_iconv
3723
3724     disable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3725     disable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3726 fi
3727 # Mark specifically enabled, but normally autodetected libraries as requested.
3728 for lib in $AUTODETECT_LIBS; do
3729     enabled $lib && request $lib
3730 done
3731 #TODO: switch to $AUTODETECT_LIBS when $THREADS_LIST is supported the same way
3732 enable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3733 enable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3734
3735 disabled logging && logfile=/dev/null
3736
3737 die_license_disabled() {
3738     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
3739 }
3740
3741 die_license_disabled_gpl() {
3742     enabled $1 || { enabled $v && die "$v is incompatible with the gpl and --enable-$1 is not specified."; }
3743 }
3744
3745 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3746 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3747
3748 enabled gpl && map "die_license_disabled_gpl nonfree" $EXTERNAL_LIBRARY_NONFREE_LIST
3749 map "die_license_disabled nonfree" $HWACCEL_LIBRARY_NONFREE_LIST
3750
3751 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3752
3753 enabled_all gnutls openssl &&
3754     die "GnuTLS and OpenSSL must not be enabled at the same time."
3755
3756 # Disable all the library-specific components if the library itself
3757 # is disabled, see AVCODEC_LIST and following _LIST variables.
3758
3759 disable_components(){
3760     disabled ${1} && disable $(
3761         eval components="\$$(toupper ${1})_COMPONENTS"
3762         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
3763     )
3764 }
3765
3766 map 'disable_components $v' $LIBRARY_LIST
3767
3768 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
3769 set >> $logfile
3770
3771 test -n "$valgrind" && toolchain="valgrind-memcheck"
3772
3773 enabled ossfuzz && {
3774     add_cflags  -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp -fno-omit-frame-pointer
3775     add_ldflags -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp
3776 }
3777
3778 case "$toolchain" in
3779     *-asan)
3780         cc_default="${toolchain%-asan}"
3781         add_cflags  -fsanitize=address
3782         add_ldflags -fsanitize=address
3783     ;;
3784     *-msan)
3785         cc_default="${toolchain%-msan}"
3786         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
3787         add_ldflags -fsanitize=memory
3788     ;;
3789     *-tsan)
3790         cc_default="${toolchain%-tsan}"
3791         add_cflags  -fsanitize=thread -fPIE
3792         add_ldflags -fsanitize=thread -pie
3793         case "$toolchain" in
3794             gcc-tsan)
3795                 add_cflags  -fPIC
3796                 add_ldflags -fPIC
3797                 ;;
3798         esac
3799     ;;
3800     *-usan)
3801         cc_default="${toolchain%-usan}"
3802         add_cflags  -fsanitize=undefined
3803         add_ldflags -fsanitize=undefined
3804     ;;
3805     valgrind-*)
3806         target_exec_default="valgrind"
3807         case "$toolchain" in
3808             valgrind-massif)
3809                 target_exec_args="--tool=massif --alloc-fn=av_malloc --alloc-fn=av_mallocz --alloc-fn=av_calloc --alloc-fn=av_fast_padded_malloc --alloc-fn=av_fast_malloc --alloc-fn=av_realloc_f --alloc-fn=av_fast_realloc --alloc-fn=av_realloc"
3810                 ;;
3811             valgrind-memcheck)
3812                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3813                 ;;
3814         esac
3815     ;;
3816     msvc)
3817         # Check whether the current MSVC version needs the C99 converter.
3818         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3819         # support enough of C99 to build ffmpeg. Default to the new
3820         # behaviour if the regexp was unable to match anything, since this
3821         # successfully parses the version number of existing supported
3822         # versions that require the converter (MSVC 2010 and 2012).
3823         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3824         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3825             cc_default="cl"
3826             cxx_default="cl"
3827         else
3828             cc_default="c99wrap cl"
3829             cxx_default="c99wrap cl"
3830         fi
3831         ld_default="$source_path/compat/windows/mslink"
3832         nm_default="dumpbin -symbols"
3833         ar_default="lib"
3834         case "$arch" in
3835         arm*)
3836             as_default="armasm"
3837             ;;
3838         esac
3839         target_os_default="win32"
3840         # Use a relative path for TMPDIR. This makes sure all the
3841         # ffconf temp files are written with a relative path, avoiding
3842         # issues with msys/win32 path conversion for MSVC parameters
3843         # such as -Fo<file> or -out:<file>.
3844         TMPDIR=.
3845     ;;
3846     icl)
3847         cc_default="icl"
3848         ld_default="xilink"
3849         nm_default="dumpbin -symbols"
3850         ar_default="xilib"
3851         target_os_default="win32"
3852         TMPDIR=.
3853     ;;
3854     gcov)
3855         add_cflags  -fprofile-arcs -ftest-coverage
3856         add_ldflags -fprofile-arcs -ftest-coverage
3857     ;;
3858     llvm-cov)
3859         add_cflags -fprofile-arcs -ftest-coverage
3860         add_ldflags --coverage
3861     ;;
3862     hardened)
3863         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3864         add_cflags   -fno-strict-overflow -fstack-protector-all
3865         add_ldflags  -Wl,-z,relro -Wl,-z,now
3866         add_cflags   -fPIE
3867         add_ldexeflags -fPIE -pie
3868     ;;
3869     ?*)
3870         die "Unknown toolchain $toolchain"
3871     ;;
3872 esac
3873
3874 test -n "$cross_prefix" && enable cross_compile
3875
3876 if enabled cross_compile; then
3877     test -n "$arch" && test -n "$target_os" ||
3878         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
3879 fi
3880
3881 ar_default="${cross_prefix}${ar_default}"
3882 cc_default="${cross_prefix}${cc_default}"
3883 cxx_default="${cross_prefix}${cxx_default}"
3884 nm_default="${cross_prefix}${nm_default}"
3885 pkg_config_default="${cross_prefix}${pkg_config_default}"
3886 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
3887     ranlib_default="${cross_prefix}${ranlib_default} -D"
3888 else
3889     ranlib_default="${cross_prefix}${ranlib_default}"
3890 fi
3891 strip_default="${cross_prefix}${strip_default}"
3892 windres_default="${cross_prefix}${windres_default}"
3893
3894 sysinclude_default="${sysroot}/usr/include"
3895
3896 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3897     target_exec target_os x86asmexe nvcc
3898 enabled cross_compile || host_cc_default=$cc
3899 set_default host_cc
3900
3901 pkg_config_fail_message=""
3902 if ! $pkg_config --version >/dev/null 2>&1; then
3903     warn "$pkg_config not found, library detection may fail."
3904     pkg_config=false
3905 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
3906     pkg_config_fail_message="
3907 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
3908 fi
3909
3910 if test $doxygen != $doxygen_default && \
3911   ! $doxygen --version >/dev/null 2>&1; then
3912     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3913 fi
3914
3915 exesuf() {
3916     case $1 in
3917         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3918     esac
3919 }
3920
3921 EXESUF=$(exesuf $target_os)
3922 HOSTEXESUF=$(exesuf $host_os)
3923
3924 # set temporary file name
3925 : ${TMPDIR:=$TEMPDIR}
3926 : ${TMPDIR:=$TMP}
3927 : ${TMPDIR:=/tmp}
3928
3929 if [ -n "$tempprefix" ] ; then
3930     mktemp(){
3931         tmpname="$tempprefix.${HOSTNAME}.${UID}"
3932         echo "$tmpname"
3933         mkdir "$tmpname"
3934     }
3935 elif ! check_cmd mktemp -u XXXXXX; then
3936     # simple replacement for missing mktemp
3937     # NOT SAFE FOR GENERAL USE
3938     mktemp(){
3939         tmpname="${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3940         echo "$tmpname"
3941         mkdir "$tmpname"
3942     }
3943 fi
3944
3945 FFTMPDIR=$(mktemp -d "${TMPDIR}/ffconf.XXXXXXXX" 2> /dev/null) ||
3946     die "Unable to create temporary directory in $TMPDIR."
3947
3948 tmpfile(){
3949     tmp="${FFTMPDIR}/test"$2
3950     (set -C; exec > $tmp) 2> /dev/null ||
3951         die "Unable to create temporary file in $FFTMPDIR."
3952     eval $1=$tmp
3953 }
3954
3955 trap 'rm -rf -- "$FFTMPDIR"' EXIT
3956 trap 'exit 2' INT
3957
3958 tmpfile TMPASM .asm
3959 tmpfile TMPC   .c
3960 tmpfile TMPCPP .cpp
3961 tmpfile TMPE   $EXESUF
3962 tmpfile TMPH   .h
3963 tmpfile TMPM   .m
3964 tmpfile TMPO   .o
3965 tmpfile TMPS   .S
3966 tmpfile TMPSH  .sh
3967 tmpfile TMPV   .ver
3968
3969 unset -f mktemp
3970
3971 chmod +x $TMPE
3972
3973 # make sure we can execute files in $TMPDIR
3974 cat > $TMPSH 2>> $logfile <<EOF
3975 #! /bin/sh
3976 EOF
3977 chmod +x $TMPSH >> $logfile 2>&1
3978 if ! $TMPSH >> $logfile 2>&1; then
3979     cat <<EOF
3980 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3981 variable to another directory and make sure that it is not mounted noexec.
3982 EOF
3983     die "Sanity test failed."
3984 fi
3985
3986 armasm_flags(){
3987     for flag; do
3988         case $flag in
3989             # Filter out MSVC cl.exe options from cflags that shouldn't
3990             # be passed to gas-preprocessor
3991             -M[TD]*)                                            ;;
3992             *)                  echo $flag                      ;;
3993         esac
3994    done
3995 }
3996
3997 ccc_flags(){
3998     for flag; do
3999         case $flag in
4000             -std=c99)           echo -c99                       ;;
4001             -mcpu=*)            echo -arch ${flag#*=}           ;;
4002             -mieee)             echo -ieee                      ;;
4003             -O*|-fast)          echo $flag                      ;;
4004             -fno-math-errno)    echo -assume nomath_errno       ;;
4005             -g)                 echo -g3                        ;;
4006             -Wall)              echo -msg_enable level2         ;;
4007             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
4008             -Wl,*)              echo $flag                      ;;
4009             -f*|-W*)                                            ;;
4010             *)                  echo $flag                      ;;
4011         esac
4012    done
4013 }
4014
4015 cparser_flags(){
4016     for flag; do
4017         case $flag in
4018             -Wno-switch)             echo -Wno-switch-enum ;;
4019             -Wno-format-zero-length) ;;
4020             -Wdisabled-optimization) ;;
4021             -Wno-pointer-sign)       echo -Wno-other ;;
4022             *)                       echo $flag ;;
4023         esac
4024     done
4025 }
4026
4027 msvc_common_flags(){
4028     for flag; do
4029         case $flag in
4030             # In addition to specifying certain flags under the compiler
4031             # specific filters, they must be specified here as well or else the
4032             # generic catch all at the bottom will print the original flag.
4033             -Wall)                ;;
4034             -Wextra)              ;;
4035             -std=c99)             ;;
4036             # Common flags
4037             -fomit-frame-pointer) ;;
4038             -g)                   echo -Z7 ;;
4039             -fno-math-errno)      ;;
4040             -fno-common)          ;;
4041             -fno-signed-zeros)    ;;
4042             -fPIC)                ;;
4043             -mthumb)              ;;
4044             -march=*)             ;;
4045             -lz)                  echo zlib.lib ;;
4046             -lx264)               echo libx264.lib ;;
4047             -lstdc++)             ;;
4048             -l*)                  echo ${flag#-l}.lib ;;
4049             -LARGEADDRESSAWARE)   echo $flag ;;
4050             -L*)                  echo -libpath:${flag#-L} ;;
4051             *)                    echo $flag ;;
4052         esac
4053     done
4054 }
4055
4056 msvc_flags(){
4057     msvc_common_flags "$@"
4058     for flag; do
4059         case $flag in
4060             -Wall)                echo -W3 -wd4018 -wd4146 -wd4244 -wd4305     \
4061                                        -wd4554 ;;
4062             -Wextra)              echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
4063                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
4064                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
4065                                        -wd4307 \
4066                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
4067         esac
4068     done
4069 }
4070
4071 icl_flags(){
4072     msvc_common_flags "$@"
4073     for flag; do
4074         case $flag in
4075             # Despite what Intel's documentation says -Wall, which is supported
4076             # on Windows, does enable remarks so disable them here.
4077             -Wall)                echo $flag -Qdiag-disable:remark ;;
4078             -std=c99)             echo -Qstd=c99 ;;
4079             -flto)                echo -ipo ;;
4080         esac
4081     done
4082 }
4083
4084 icc_flags(){
4085     for flag; do
4086         case $flag in
4087             -flto)                echo -ipo ;;
4088             *)                    echo $flag ;;
4089         esac
4090     done
4091 }
4092
4093 pgi_flags(){
4094     for flag; do
4095         case $flag in
4096             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
4097             -fomit-frame-pointer) echo -Mnoframe ;;
4098             -g)                   echo -gopt ;;
4099             *)                    echo $flag ;;
4100         esac
4101     done
4102 }
4103
4104 suncc_flags(){
4105     for flag; do
4106         case $flag in
4107             -march=*|-mcpu=*)
4108                 case "${flag#*=}" in
4109                     native)                   echo -xtarget=native       ;;
4110                     v9|niagara)               echo -xarch=sparc          ;;
4111                     ultrasparc)               echo -xarch=sparcvis       ;;
4112                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
4113                     i586|pentium)             echo -xchip=pentium        ;;
4114                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
4115                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
4116                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
4117                     pentium4*)          echo -xtarget=pentium4           ;;
4118                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
4119                     *-sse3)             echo -xarch=sse3                 ;;
4120                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
4121                     bonnell)                   echo -xarch=ssse3         ;;
4122                     corei7|nehalem)            echo -xtarget=nehalem     ;;
4123                     westmere)                  echo -xtarget=westmere    ;;
4124                     silvermont)                echo -xarch=sse4_2        ;;
4125                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
4126                     core-avx*|ivybridge|haswell|broadwell|skylake*|knl)
4127                                                echo -xarch=avx           ;;
4128                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
4129                     btver1)                    echo -xarch=amdsse4a      ;;
4130                     btver2|bdver*|znver*)      echo -xarch=avx           ;;
4131                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
4132                     k8|opteron|athlon64|athlon-fx)
4133                                                echo -xarch=sse2a         ;;
4134                     athlon*)                   echo -xarch=pentium_proa  ;;
4135                 esac
4136                 ;;
4137             -std=c99)             echo -xc99              ;;
4138             -fomit-frame-pointer) echo -xregs=frameptr    ;;
4139             -fPIC)                echo -KPIC -xcode=pic32 ;;
4140             -W*,*)                echo $flag              ;;
4141             -f*-*|-W*|-mimpure-text)                      ;;
4142             -shared)              echo -G                 ;;
4143             *)                    echo $flag              ;;
4144         esac
4145     done
4146 }
4147
4148 tms470_flags(){
4149     for flag; do
4150         case $flag in
4151             -march=*|-mcpu=*)
4152                 case "${flag#*=}" in
4153                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
4154                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
4155                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
4156                     armv6*|arm11*)          echo -mv=6   ;;
4157                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
4158                                             echo -mv=5e  ;;
4159                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
4160                 esac
4161                 ;;
4162             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
4163             -mfpu=vfp)      echo --float_support=vfpv2        ;;
4164             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
4165             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
4166             -msoft-float)   echo --float_support=vfplib       ;;
4167             -O[0-3]|-mf=*)  echo $flag                        ;;
4168             -g)             echo -g -mn                       ;;
4169             -pds=*)         echo $flag                        ;;
4170             -D*|-I*)        echo $flag                        ;;
4171             --gcc|--abi=*)  echo $flag                        ;;
4172             -me)            echo $flag                        ;;
4173         esac
4174     done
4175 }
4176
4177 probe_cc(){
4178     pfx=$1
4179     _cc=$2
4180     first=$3
4181
4182     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
4183     unset _ld_o _ldflags _ld_lib _ld_path
4184     unset _depflags _DEPCMD _DEPFLAGS
4185     _flags_filter=echo
4186
4187     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
4188         true # no-op to avoid reading stdin in following checks
4189     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
4190         _type=llvm_gcc
4191         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
4192         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
4193         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4194         _cflags_speed='-O3'
4195         _cflags_size='-Os'
4196     elif $_cc -v 2>&1 | grep -qi ^gcc; then
4197         _type=gcc
4198         gcc_version=$($_cc --version | head -n1)
4199         gcc_basever=$($_cc -dumpversion)
4200         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
4201         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
4202         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
4203         case $gcc_basever in
4204             2) ;;
4205             2.*) ;;
4206             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
4207         esac
4208         if [ "$first" = true ]; then
4209             case $gcc_basever in
4210                 4.2*)
4211                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
4212             esac
4213         fi
4214         _cflags_speed='-O3'
4215         _cflags_size='-Os'
4216     elif $_cc --version 2>/dev/null | grep -q ^icc; then
4217         _type=icc
4218         _ident=$($_cc --version | head -n1)
4219         _depflags='-MMD'
4220         _cflags_speed='-O3'
4221         _cflags_size='-Os'
4222         _cflags_noopt='-O1'
4223         _flags_filter=icc_flags
4224     elif $_cc -v 2>&1 | grep -q xlc; then
4225         _type=xlc
4226         _ident=$($_cc -qversion 2>/dev/null | head -n1)
4227         _cflags_speed='-O5'
4228         _cflags_size='-O5 -qcompact'
4229     elif $_cc -V 2>/dev/null | grep -q Compaq; then
4230         _type=ccc
4231         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
4232         _DEPFLAGS='-M'
4233         _cflags_speed='-fast'
4234         _cflags_size='-O1'
4235         _flags_filter=ccc_flags
4236     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
4237         test -d "$sysroot" || die "No valid sysroot specified."
4238         _type=armcc
4239         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
4240         armcc_conf="$PWD/armcc.conf"
4241         $_cc --arm_linux_configure                 \
4242              --arm_linux_config_file="$armcc_conf" \
4243              --configure_sysroot="$sysroot"        \
4244              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
4245              die "Error creating armcc configuration file."
4246         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
4247         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
4248         as_default="${cross_prefix}gcc"
4249         _depflags='-MMD'
4250         _cflags_speed='-O3'
4251         _cflags_size='-Os'
4252     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
4253         _type=tms470
4254         _ident=$($_cc -version | head -n1 | tr -s ' ')
4255         _flags='--gcc --abi=eabi -me'
4256         _cc_e='-ppl -fe=$@'
4257         _cc_o='-fe=$@'
4258         _depflags='-ppa -ppd=$(@:.o=.d)'
4259         _cflags_speed='-O3 -mf=5'
4260         _cflags_size='-O3 -mf=2'
4261         _flags_filter=tms470_flags
4262     elif $_cc -v 2>&1 | grep -q clang; then
4263         _type=clang
4264         _ident=$($_cc --version 2>/dev/null | head -n1)
4265         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4266         _cflags_speed='-O3'
4267         _cflags_size='-Oz'
4268     elif $_cc -V 2>&1 | grep -q Sun; then
4269         _type=suncc
4270         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
4271         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
4272         _DEPFLAGS='-xM1 -xc99'
4273         _ldflags='-std=c99'
4274         _cflags_speed='-O5'
4275         _cflags_size='-O5 -xspace'
4276         _flags_filter=suncc_flags
4277     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
4278         _type=pathscale
4279         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4280         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4281         _cflags_speed='-O2'
4282         _cflags_size='-Os'
4283         _flags_filter='filter_out -Wdisabled-optimization'
4284     elif $_cc -v 2>&1 | grep -q Open64; then
4285         _type=open64
4286         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4287         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4288         _cflags_speed='-O2'
4289         _cflags_size='-Os'
4290         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
4291     elif $_cc -V 2>&1 | grep -q Portland; then
4292         _type=pgi
4293         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
4294         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
4295         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
4296         _cflags_size="-O2 -Munroll=c:1 $opt_common"
4297         _cflags_noopt="-O"
4298         _flags_filter=pgi_flags
4299     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
4300         _type=armasm
4301         _ident=$($_cc | head -n1)
4302         # 4509: "This form of conditional instruction is deprecated"
4303         _flags="-nologo -ignore 4509"
4304         _flags_filter=armasm_flags
4305     elif $_cc 2>&1 | grep -q Intel; then
4306         _type=icl
4307         _ident=$($_cc 2>&1 | head -n1)
4308         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
4309         # Not only is O3 broken on 13.x+ but it is slower on all previous
4310         # versions (tested) as well.
4311         _cflags_speed="-O2"
4312         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
4313         if $_cc 2>&1 | grep -q Linker; then
4314             _ld_o='-out:$@'
4315         else
4316             _ld_o='-Fe$@'
4317         fi
4318         _cc_o='-Fo$@'
4319         _cc_e='-P'
4320         _flags_filter=icl_flags
4321         _ld_lib='lib%.a'
4322         _ld_path='-libpath:'
4323         # -Qdiag-error to make icl error when seeing certain unknown arguments
4324         _flags='-nologo -Qdiag-error:4044,10157'
4325         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
4326         # with MSVC which enables it by default.
4327         _cflags='-Qms0 -Qvec- -Qsimd- -GS -fp:precise'
4328         disable stripping
4329     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
4330         # lld can emulate multiple different linkers; in ms link.exe mode,
4331         # the -? parameter gives the help output which contains an identifyable
4332         # string, while it gives an error in other modes.
4333         _type=lld-link
4334         # The link.exe mode doesn't have a switch for getting the version,
4335         # but we can force it back to gnu mode and get the version from there.
4336         _ident=$($_cc -flavor gnu --version 2>/dev/null)
4337         _ld_o='-out:$@'
4338         _flags_filter=msvc_flags
4339         _ld_lib='lib%.a'
4340         _ld_path='-libpath:'
4341     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
4342         _type=msvc
4343         _ident=$($_cc 2>&1 | head -n1)
4344         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
4345         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
4346         _cflags_speed="-O2"
4347         _cflags_size="-O1"
4348         _cflags_noopt="-O1"
4349         if $_cc -nologo- 2>&1 | grep -q Linker; then
4350             _ld_o='-out:$@'
4351         else
4352             _ld_o='-Fe$@'
4353         fi
4354         _cc_o='-Fo$@'
4355         _cc_e='-P -Fi$@'
4356         _flags_filter=msvc_flags
4357         _ld_lib='lib%.a'
4358         _ld_path='-libpath:'
4359         _flags='-nologo'
4360         disable stripping
4361     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
4362         _type=cparser
4363         _ident=$($_cc --version | head -n1)
4364         _depflags='-MMD'
4365         _cflags_speed='-O4'
4366         _cflags_size='-O2'
4367         _flags_filter=cparser_flags
4368     fi
4369
4370     eval ${pfx}_type=\$_type
4371     eval ${pfx}_ident=\$_ident
4372 }
4373
4374 set_ccvars(){
4375     eval ${1}_C=\${_cc_c-\${${1}_C}}
4376     eval ${1}_E=\${_cc_e-\${${1}_E}}
4377     eval ${1}_O=\${_cc_o-\${${1}_O}}
4378
4379     if [ -n "$_depflags" ]; then
4380         eval ${1}_DEPFLAGS=\$_depflags
4381     else
4382         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
4383         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
4384         eval DEP${1}FLAGS=\$_flags
4385     fi
4386 }
4387
4388 probe_cc cc "$cc" "true"
4389 cflags_filter=$_flags_filter
4390 cflags_speed=$_cflags_speed
4391 cflags_size=$_cflags_size
4392 cflags_noopt=$_cflags_noopt
4393 add_cflags $_flags $_cflags
4394 cc_ldflags=$_ldflags
4395 set_ccvars CC
4396 set_ccvars CXX
4397
4398 probe_cc hostcc "$host_cc"
4399 host_cflags_filter=$_flags_filter
4400 host_cflags_speed=$_cflags_speed
4401 add_host_cflags  $_flags $_cflags
4402 set_ccvars HOSTCC
4403
4404 test -n "$cc_type" && enable $cc_type ||
4405     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4406
4407 : ${as_default:=$cc}
4408 : ${objcc_default:=$cc}
4409 : ${dep_cc_default:=$cc}
4410 : ${ld_default:=$cc}
4411 : ${host_ld_default:=$host_cc}
4412 set_default ar as objcc dep_cc ld ln_s host_ld windres
4413
4414 probe_cc as "$as"
4415 asflags_filter=$_flags_filter
4416 add_asflags $_flags $_cflags
4417 set_ccvars AS
4418
4419 probe_cc objcc "$objcc"
4420 objcflags_filter=$_flags_filter
4421 add_objcflags $_flags $_cflags
4422 set_ccvars OBJC
4423
4424 probe_cc ld "$ld"
4425 ldflags_filter=$_flags_filter
4426 add_ldflags $_flags $_ldflags
4427 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4428 LD_O=${_ld_o-$LD_O}
4429 LD_LIB=${_ld_lib-$LD_LIB}
4430 LD_PATH=${_ld_path-$LD_PATH}
4431
4432 probe_cc hostld "$host_ld"
4433 host_ldflags_filter=$_flags_filter
4434 add_host_ldflags $_flags $_ldflags
4435 HOSTLD_O=${_ld_o-$HOSTLD_O}
4436
4437 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4438     probe_cc depcc "$dep_cc"
4439     CCDEP=${_DEPCMD:-$DEPCMD}
4440     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4441     DEPCCFLAGS=$_flags
4442 fi
4443
4444 if $ar 2>&1 | grep -q Microsoft; then
4445     arflags="-nologo"
4446     ar_o='-out:$@'
4447 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
4448     arflags="rq"
4449     ar_o='$@'
4450 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
4451     arflags='-Xany -r -c'
4452     ar_o='$@'
4453 elif $ar 2>&1 | grep -q "\[D\] "; then
4454     arflags="rcD"
4455     ar_o='$@'
4456 else
4457     arflags="rc"
4458     ar_o='$@'
4459 fi
4460
4461 add_cflags $extra_cflags
4462 add_cxxflags $extra_cxxflags
4463 add_objcflags $extra_objcflags
4464 add_asflags $extra_cflags
4465
4466 if test -n "$sysroot"; then
4467     case "$cc_type" in
4468         gcc|llvm_gcc|clang)
4469             add_cppflags --sysroot="$sysroot"
4470             add_ldflags --sysroot="$sysroot"
4471         ;;
4472         tms470)
4473             add_cppflags -I"$sysinclude"
4474             add_ldflags  --sysroot="$sysroot"
4475         ;;
4476     esac
4477 fi
4478
4479 if test "$cpu" = host; then
4480     enabled cross_compile &&
4481         die "--cpu=host makes no sense when cross-compiling."
4482
4483     case "$cc_type" in
4484         gcc|llvm_gcc)
4485             check_native(){
4486                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4487                 sed -n "/cc1.*$1=/{
4488                             s/.*$1=\\([^ ]*\\).*/\\1/
4489                             p
4490                             q
4491                         }" $TMPE
4492             }
4493             cpu=$(check_native -march || check_native -mcpu)
4494         ;;
4495         clang)
4496             check_native(){
4497                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4498                 sed -n "/cc1.*-target-cpu /{
4499                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4500                             p
4501                             q
4502                         }" $TMPE
4503             }
4504             cpu=$(check_native -march)
4505         ;;
4506     esac
4507
4508     test "${cpu:-host}" = host &&
4509         die "--cpu=host not supported with compiler $cc"
4510 fi
4511
4512 # Deal with common $arch aliases
4513 case "$arch" in
4514     aarch64|arm64)
4515         arch="aarch64"
4516     ;;
4517     arm*|iPad*|iPhone*)
4518         arch="arm"
4519     ;;
4520     mips*|IP*)
4521         case "$arch" in
4522         *el)
4523             add_cppflags -EL
4524             add_ldflags -EL
4525         ;;
4526         *eb)
4527             add_cppflags -EB
4528             add_ldflags -EB
4529         ;;
4530         esac
4531         arch="mips"
4532     ;;
4533     parisc*|hppa*)
4534         arch="parisc"
4535     ;;
4536     "Power Macintosh"|ppc*|powerpc*)
4537         arch="ppc"
4538     ;;
4539     s390|s390x)
4540         arch="s390"
4541     ;;
4542     sh4|sh)
4543         arch="sh4"
4544     ;;
4545     sun4*|sparc*)
4546         arch="sparc"
4547     ;;
4548     tilegx|tile-gx)
4549         arch="tilegx"
4550     ;;
4551     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4552         arch="x86"
4553     ;;
4554 esac
4555
4556 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4557 enable $arch
4558
4559 # Add processor-specific flags
4560 if enabled aarch64; then
4561
4562     case $cpu in
4563         armv*)
4564             cpuflags="-march=$cpu"
4565         ;;
4566         *)
4567             cpuflags="-mcpu=$cpu"
4568         ;;
4569     esac
4570
4571 elif enabled alpha; then
4572
4573     cpuflags="-mcpu=$cpu"
4574
4575 elif enabled arm; then
4576
4577     check_arm_arch() {
4578         check_cpp_condition stddef.h \
4579             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4580             $cpuflags
4581     }
4582
4583     probe_arm_arch() {
4584         if   check_arm_arch 4;        then echo armv4
4585         elif check_arm_arch 4T;       then echo armv4t
4586         elif check_arm_arch 5;        then echo armv5
4587         elif check_arm_arch 5E;       then echo armv5e
4588         elif check_arm_arch 5T;       then echo armv5t
4589         elif check_arm_arch 5TE;      then echo armv5te
4590         elif check_arm_arch 5TEJ;     then echo armv5te
4591         elif check_arm_arch 6;        then echo armv6
4592         elif check_arm_arch 6J;       then echo armv6j
4593         elif check_arm_arch 6K;       then echo armv6k
4594         elif check_arm_arch 6Z;       then echo armv6z
4595         elif check_arm_arch 6ZK;      then echo armv6zk
4596         elif check_arm_arch 6T2;      then echo armv6t2
4597         elif check_arm_arch 7;        then echo armv7
4598         elif check_arm_arch 7A  7_A;  then echo armv7-a
4599         elif check_arm_arch 7S;       then echo armv7-a
4600         elif check_arm_arch 7R  7_R;  then echo armv7-r
4601         elif check_arm_arch 7M  7_M;  then echo armv7-m
4602         elif check_arm_arch 7EM 7E_M; then echo armv7-m
4603         elif check_arm_arch 8A  8_A;  then echo armv8-a
4604         fi
4605     }
4606
4607     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4608
4609     case $cpu in
4610         armv*)
4611             cpuflags="-march=$cpu"
4612             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4613         ;;
4614         *)
4615             cpuflags="-mcpu=$cpu"
4616             case $cpu in
4617                 cortex-a*)                               subarch=armv7a  ;;
4618                 cortex-r*)                               subarch=armv7r  ;;
4619                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4620                 arm11*)                                  subarch=armv6   ;;
4621                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4622                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4623                 *)                             subarch=$(probe_arm_arch) ;;
4624             esac
4625         ;;
4626     esac
4627
4628     case "$subarch" in
4629         armv5t*)    enable fast_clz                ;;
4630         armv[6-8]*)
4631             enable fast_clz
4632             disabled fast_unaligned || enable fast_unaligned
4633             ;;
4634     esac
4635
4636 elif enabled avr32; then
4637
4638     case $cpu in
4639         ap7[02]0[0-2])
4640             subarch="avr32_ap"
4641             cpuflags="-mpart=$cpu"
4642         ;;
4643         ap)
4644             subarch="avr32_ap"
4645             cpuflags="-march=$cpu"
4646         ;;
4647         uc3[ab]*)
4648             subarch="avr32_uc"
4649             cpuflags="-mcpu=$cpu"
4650         ;;
4651         uc)
4652             subarch="avr32_uc"
4653             cpuflags="-march=$cpu"
4654         ;;
4655     esac
4656
4657 elif enabled bfin; then
4658
4659     cpuflags="-mcpu=$cpu"
4660
4661 elif enabled mips; then
4662
4663     cpuflags="-march=$cpu"
4664
4665     if [ "$cpu" != "generic" ]; then
4666         disable mips32r2
4667         disable mips32r5
4668         disable mips64r2
4669         disable mips32r6
4670         disable mips64r6
4671         disable loongson2
4672         disable loongson3
4673
4674         case $cpu in
4675             24kc|24kf*|24kec|34kc|1004kc|24kef*|34kf*|1004kf*|74kc|74kf)
4676                 enable mips32r2
4677                 disable msa
4678             ;;
4679             p5600|i6400|p6600)
4680                 disable mipsdsp
4681                 disable mipsdspr2
4682             ;;
4683             loongson*)
4684                 enable loongson2
4685                 enable loongson3
4686                 enable local_aligned
4687                 enable simd_align_16
4688                 enable fast_64bit
4689                 enable fast_clz
4690                 enable fast_cmov
4691                 enable fast_unaligned
4692                 disable aligned_stack
4693                 disable mipsfpu
4694                 disable mipsdsp
4695                 disable mipsdspr2
4696                 case $cpu in
4697                     loongson3*)
4698                         cpuflags="-march=loongson3a -mhard-float -fno-expensive-optimizations"
4699                     ;;
4700                     loongson2e)
4701                         cpuflags="-march=loongson2e -mhard-float -fno-expensive-optimizations"
4702                     ;;
4703                     loongson2f)
4704                         cpuflags="-march=loongson2f -mhard-float -fno-expensive-optimizations"
4705                     ;;
4706                 esac
4707             ;;
4708             *)
4709                 # Unknown CPU. Disable everything.
4710                 warn "unknown CPU. Disabling all MIPS optimizations."
4711                 disable mipsfpu
4712                 disable mipsdsp
4713                 disable mipsdspr2
4714                 disable msa
4715                 disable mmi
4716             ;;
4717         esac
4718
4719         case $cpu in
4720             24kc)
4721                 disable mipsfpu
4722                 disable mipsdsp
4723                 disable mipsdspr2
4724             ;;
4725             24kf*)
4726                 disable mipsdsp
4727                 disable mipsdspr2
4728             ;;
4729             24kec|34kc|1004kc)
4730                 disable mipsfpu
4731                 disable mipsdspr2
4732             ;;
4733             24kef*|34kf*|1004kf*)
4734                 disable mipsdspr2
4735             ;;
4736             74kc)
4737                 disable mipsfpu
4738             ;;
4739             p5600)
4740                 enable mips32r5
4741                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
4742             ;;
4743             i6400)
4744                 enable mips64r6
4745                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4746             ;;
4747             p6600)
4748                 enable mips64r6
4749                 check_cflags "-mtune=p6600 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4750             ;;
4751         esac
4752     else
4753         # We do not disable anything. Is up to the user to disable the unwanted features.
4754         warn 'generic cpu selected'
4755     fi
4756
4757 elif enabled ppc; then
4758
4759     disable ldbrx
4760
4761     case $(tolower $cpu) in
4762         601|ppc601|powerpc601)
4763             cpuflags="-mcpu=601"
4764             disable altivec
4765         ;;
4766         603*|ppc603*|powerpc603*)
4767             cpuflags="-mcpu=603"
4768             disable altivec
4769         ;;
4770         604*|ppc604*|powerpc604*)
4771             cpuflags="-mcpu=604"
4772             disable altivec
4773         ;;
4774         g3|75*|ppc75*|powerpc75*)
4775             cpuflags="-mcpu=750"
4776             disable altivec
4777         ;;
4778         g4|745*|ppc745*|powerpc745*)
4779             cpuflags="-mcpu=7450"
4780             disable vsx
4781         ;;
4782         74*|ppc74*|powerpc74*)
4783             cpuflags="-mcpu=7400"
4784             disable vsx
4785         ;;
4786         g5|970|ppc970|powerpc970)
4787             cpuflags="-mcpu=970"
4788             disable vsx
4789         ;;
4790         power[3-6]*)
4791             cpuflags="-mcpu=$cpu"
4792             disable vsx
4793         ;;
4794         power[7-8]*)
4795             cpuflags="-mcpu=$cpu"
4796         ;;
4797         cell)
4798             cpuflags="-mcpu=cell"
4799             enable ldbrx
4800             disable vsx
4801         ;;
4802         e500mc)
4803             cpuflags="-mcpu=e500mc"
4804             disable altivec
4805         ;;
4806         e500v2)
4807             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
4808             disable altivec
4809             disable dcbzl
4810         ;;
4811         e500)
4812             cpuflags="-mcpu=8540 -mhard-float"
4813             disable altivec
4814             disable dcbzl
4815         ;;
4816     esac
4817
4818 elif enabled sparc; then
4819
4820     case $cpu in
4821         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
4822             cpuflags="-mcpu=$cpu"
4823         ;;
4824         ultrasparc*|niagara[234])
4825             cpuflags="-mcpu=$cpu"
4826         ;;
4827     esac
4828
4829 elif enabled x86; then
4830
4831     case $cpu in
4832         i[345]86|pentium)
4833             cpuflags="-march=$cpu"
4834             disable i686
4835             disable mmx
4836         ;;
4837         # targets that do NOT support nopl and conditional mov (cmov)
4838         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
4839             cpuflags="-march=$cpu"
4840             disable i686
4841         ;;
4842         # targets that do support nopl and conditional mov (cmov)
4843         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
4844         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|skylake*|knl\
4845         |amdfam10|barcelona|b[dt]ver*|znver*)
4846             cpuflags="-march=$cpu"
4847             enable i686
4848             enable fast_cmov
4849         ;;
4850         # targets that do support conditional mov but on which it's slow
4851         pentium4|pentium4m|prescott|nocona)
4852             cpuflags="-march=$cpu"
4853             enable i686
4854             disable fast_cmov
4855         ;;
4856     esac
4857
4858 fi
4859
4860 if [ "$cpu" != generic ]; then
4861     add_cflags  $cpuflags
4862     add_asflags $cpuflags
4863     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
4864 fi
4865
4866 # compiler sanity check
4867 check_exec <<EOF
4868 int main(void){ return 0; }
4869 EOF
4870 if test "$?" != 0; then
4871     echo "$cc is unable to create an executable file."
4872     if test -z "$cross_prefix" && ! enabled cross_compile ; then
4873         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
4874         echo "Only do this if you know what cross compiling means."
4875     fi
4876     die "C compiler test failed."
4877 fi
4878
4879 add_cppflags -D_ISOC99_SOURCE
4880 add_cxxflags -D__STDC_CONSTANT_MACROS
4881 check_cxxflags -std=c++11 || check_cxxflags -std=c++0x
4882
4883 # some compilers silently accept -std=c11, so we also need to check that the
4884 # version macro is defined properly
4885 test_cflags_cc -std=c11 ctype.h "__STDC_VERSION__ >= 201112L" &&
4886     add_cflags -std=c11 ||
4887     check_cflags -std=c99
4888
4889 check_cppflags -D_FILE_OFFSET_BITS=64
4890 check_cppflags -D_LARGEFILE_SOURCE
4891
4892 add_host_cppflags -D_ISOC99_SOURCE
4893 check_host_cflags -std=c99
4894 check_host_cflags -Wall
4895 check_host_cflags $host_cflags_speed
4896
4897 check_64bit(){
4898     arch32=$1
4899     arch64=$2
4900     expr=$3
4901     check_code cc "" "int test[2*($expr) - 1]" &&
4902         subarch=$arch64 || subarch=$arch32
4903 }
4904
4905 case "$arch" in
4906     aarch64|alpha|ia64)
4907         spic=$shared
4908     ;;
4909     mips)
4910         check_64bit mips mips64 '_MIPS_SIM > 1'
4911         spic=$shared
4912     ;;
4913     parisc)
4914         check_64bit parisc parisc64 'sizeof(void *) > 4'
4915         spic=$shared
4916     ;;
4917     ppc)
4918         check_64bit ppc ppc64 'sizeof(void *) > 4'
4919         spic=$shared
4920     ;;
4921