configure: add optional zlib dependency to avformat
[ffmpeg.git] / configure
1 #!/bin/sh
2 #
3 # FFmpeg configure script
4 #
5 # Copyright (c) 2000-2002 Fabrice Bellard
6 # Copyright (c) 2005-2008 Diego Biurrun
7 # Copyright (c) 2005-2008 Mans Rullgard
8 #
9
10 # Prevent locale nonsense from breaking basic text processing.
11 LC_ALL=C
12 export LC_ALL
13
14 # make sure we are running under a compatible shell
15 # try to make this part work with most shells
16
17 try_exec(){
18     echo "Trying shell $1"
19     type "$1" > /dev/null 2>&1 && exec "$@"
20 }
21
22 unset foo
23 (: ${foo%%bar}) 2> /dev/null
24 E1="$?"
25
26 (: ${foo?}) 2> /dev/null
27 E2="$?"
28
29 if test "$E1" != 0 || test "$E2" = 0; then
30     echo "Broken shell detected.  Trying alternatives."
31     export FF_CONF_EXEC
32     if test "0$FF_CONF_EXEC" -lt 1; then
33         FF_CONF_EXEC=1
34         try_exec bash "$0" "$@"
35     fi
36     if test "0$FF_CONF_EXEC" -lt 2; then
37         FF_CONF_EXEC=2
38         try_exec ksh "$0" "$@"
39     fi
40     if test "0$FF_CONF_EXEC" -lt 3; then
41         FF_CONF_EXEC=3
42         try_exec /usr/xpg4/bin/sh "$0" "$@"
43     fi
44     echo "No compatible shell script interpreter found."
45     echo "This configure script requires a POSIX-compatible shell"
46     echo "such as bash or ksh."
47     echo "THIS IS NOT A BUG IN FFMPEG, DO NOT REPORT IT AS SUCH."
48     echo "Instead, install a working POSIX-compatible shell."
49     echo "Disabling this configure test will create a broken FFmpeg."
50     if test "$BASH_VERSION" = '2.04.0(1)-release'; then
51         echo "This bash version ($BASH_VERSION) is broken on your platform."
52         echo "Upgrade to a later version if available."
53     fi
54     exit 1
55 fi
56
57 test -d /usr/xpg4/bin && PATH=/usr/xpg4/bin:$PATH
58
59 show_help(){
60     cat <<EOF
61 Usage: configure [options]
62 Options: [defaults in brackets after descriptions]
63
64 Help options:
65   --help                   print this message
66   --quiet                  Suppress showing informative output
67   --list-decoders          show all available decoders
68   --list-encoders          show all available encoders
69   --list-hwaccels          show all available hardware accelerators
70   --list-demuxers          show all available demuxers
71   --list-muxers            show all available muxers
72   --list-parsers           show all available parsers
73   --list-protocols         show all available protocols
74   --list-bsfs              show all available bitstream filters
75   --list-indevs            show all available input devices
76   --list-outdevs           show all available output devices
77   --list-filters           show all available filters
78
79 Standard options:
80   --logfile=FILE           log tests and output to FILE [ffbuild/config.log]
81   --disable-logging        do not log configure debug information
82   --fatal-warnings         fail if any configure warning is generated
83   --prefix=PREFIX          install in PREFIX [$prefix_default]
84   --bindir=DIR             install binaries in DIR [PREFIX/bin]
85   --datadir=DIR            install data files in DIR [PREFIX/share/ffmpeg]
86   --docdir=DIR             install documentation in DIR [PREFIX/share/doc/ffmpeg]
87   --libdir=DIR             install libs in DIR [PREFIX/lib]
88   --shlibdir=DIR           install shared libs in DIR [LIBDIR]
89   --incdir=DIR             install includes in DIR [PREFIX/include]
90   --mandir=DIR             install man page in DIR [PREFIX/share/man]
91   --pkgconfigdir=DIR       install pkg-config files in DIR [LIBDIR/pkgconfig]
92   --enable-rpath           use rpath to allow installing libraries in paths
93                            not part of the dynamic linker search path
94                            use rpath when linking programs (USE WITH CARE)
95   --install-name-dir=DIR   Darwin directory name for installed targets
96
97 Licensing options:
98   --enable-gpl             allow use of GPL code, the resulting libs
99                            and binaries will be under GPL [no]
100   --enable-version3        upgrade (L)GPL to version 3 [no]
101   --enable-nonfree         allow use of nonfree code, the resulting libs
102                            and binaries will be unredistributable [no]
103
104 Configuration options:
105   --disable-static         do not build static libraries [no]
106   --enable-shared          build shared libraries [no]
107   --enable-small           optimize for size instead of speed
108   --disable-runtime-cpudetect disable detecting CPU capabilities at runtime (smaller binary)
109   --enable-gray            enable full grayscale support (slower color)
110   --disable-swscale-alpha  disable alpha channel support in swscale
111   --disable-all            disable building components, libraries and programs
112   --disable-autodetect     disable automatically detected external libraries [no]
113
114 Program options:
115   --disable-programs       do not build command line programs
116   --disable-ffmpeg         disable ffmpeg build
117   --disable-ffplay         disable ffplay build
118   --disable-ffprobe        disable ffprobe build
119   --disable-ffserver       disable ffserver build
120
121 Documentation options:
122   --disable-doc            do not build documentation
123   --disable-htmlpages      do not build HTML documentation pages
124   --disable-manpages       do not build man documentation pages
125   --disable-podpages       do not build POD documentation pages
126   --disable-txtpages       do not build text documentation pages
127
128 Component options:
129   --disable-avdevice       disable libavdevice build
130   --disable-avcodec        disable libavcodec build
131   --disable-avformat       disable libavformat build
132   --disable-swresample     disable libswresample build
133   --disable-swscale        disable libswscale build
134   --disable-postproc       disable libpostproc build
135   --disable-avfilter       disable libavfilter build
136   --enable-avresample      enable libavresample build [no]
137   --disable-pthreads       disable pthreads [autodetect]
138   --disable-w32threads     disable Win32 threads [autodetect]
139   --disable-os2threads     disable OS/2 threads [autodetect]
140   --disable-network        disable network support [no]
141   --disable-dct            disable DCT code
142   --disable-dwt            disable DWT code
143   --disable-error-resilience disable error resilience code
144   --disable-lsp            disable LSP code
145   --disable-lzo            disable LZO decoder code
146   --disable-mdct           disable MDCT code
147   --disable-rdft           disable RDFT code
148   --disable-fft            disable FFT code
149   --disable-faan           disable floating point AAN (I)DCT code
150   --disable-pixelutils     disable pixel utils in libavutil
151
152 Individual component options:
153   --disable-everything     disable all components listed below
154   --disable-encoder=NAME   disable encoder NAME
155   --enable-encoder=NAME    enable encoder NAME
156   --disable-encoders       disable all encoders
157   --disable-decoder=NAME   disable decoder NAME
158   --enable-decoder=NAME    enable decoder NAME
159   --disable-decoders       disable all decoders
160   --disable-hwaccel=NAME   disable hwaccel NAME
161   --enable-hwaccel=NAME    enable hwaccel NAME
162   --disable-hwaccels       disable all hwaccels
163   --disable-muxer=NAME     disable muxer NAME
164   --enable-muxer=NAME      enable muxer NAME
165   --disable-muxers         disable all muxers
166   --disable-demuxer=NAME   disable demuxer NAME
167   --enable-demuxer=NAME    enable demuxer NAME
168   --disable-demuxers       disable all demuxers
169   --enable-parser=NAME     enable parser NAME
170   --disable-parser=NAME    disable parser NAME
171   --disable-parsers        disable all parsers
172   --enable-bsf=NAME        enable bitstream filter NAME
173   --disable-bsf=NAME       disable bitstream filter NAME
174   --disable-bsfs           disable all bitstream filters
175   --enable-protocol=NAME   enable protocol NAME
176   --disable-protocol=NAME  disable protocol NAME
177   --disable-protocols      disable all protocols
178   --enable-indev=NAME      enable input device NAME
179   --disable-indev=NAME     disable input device NAME
180   --disable-indevs         disable input devices
181   --enable-outdev=NAME     enable output device NAME
182   --disable-outdev=NAME    disable output device NAME
183   --disable-outdevs        disable output devices
184   --disable-devices        disable all devices
185   --enable-filter=NAME     enable filter NAME
186   --disable-filter=NAME    disable filter NAME
187   --disable-filters        disable all filters
188   --disable-v4l2_m2m       disable V4L2 mem2mem code [autodetect]
189
190 External library support:
191
192   Using any of the following switches will allow FFmpeg to link to the
193   corresponding external library. All the components depending on that library
194   will become enabled, if all their other dependencies are met and they are not
195   explicitly disabled. E.g. --enable-libwavpack will enable linking to
196   libwavpack and allow the libwavpack encoder to be built, unless it is
197   specifically disabled with --disable-encoder=libwavpack.
198
199   Note that only the system libraries are auto-detected. All the other external
200   libraries must be explicitly enabled.
201
202   Also note that the following help text describes the purpose of the libraries
203   themselves, not all their features will necessarily be usable by FFmpeg.
204
205   --disable-alsa           disable ALSA support [autodetect]
206   --disable-appkit         disable Apple AppKit framework [autodetect]
207   --disable-avfoundation   disable Apple AVFoundation framework [autodetect]
208   --enable-avisynth        enable reading of AviSynth script files [no]
209   --disable-bzlib          disable bzlib [autodetect]
210   --disable-coreimage      disable Apple CoreImage framework [autodetect]
211   --enable-chromaprint     enable audio fingerprinting with chromaprint [no]
212   --enable-frei0r          enable frei0r video filtering [no]
213   --enable-gcrypt          enable gcrypt, needed for rtmp(t)e support
214                            if openssl, librtmp or gmp is not used [no]
215   --enable-gmp             enable gmp, needed for rtmp(t)e support
216                            if openssl or librtmp is not used [no]
217   --enable-gnutls          enable gnutls, needed for https support
218                            if openssl is not used [no]
219   --disable-iconv          disable iconv [autodetect]
220   --enable-jni             enable JNI support [no]
221   --enable-ladspa          enable LADSPA audio filtering [no]
222   --enable-libass          enable libass subtitles rendering,
223                            needed for subtitles and ass filter [no]
224   --enable-libbluray       enable BluRay reading using libbluray [no]
225   --enable-libbs2b         enable bs2b DSP library [no]
226   --enable-libcaca         enable textual display using libcaca [no]
227   --enable-libcelt         enable CELT decoding via libcelt [no]
228   --enable-libcdio         enable audio CD grabbing with libcdio [no]
229   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
230                            and libraw1394 [no]
231   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
232   --enable-libflite        enable flite (voice synthesis) support via libflite [no]
233   --enable-libfontconfig   enable libfontconfig, useful for drawtext filter [no]
234   --enable-libfreetype     enable libfreetype, needed for drawtext filter [no]
235   --enable-libfribidi      enable libfribidi, improves drawtext filter [no]
236   --enable-libgme          enable Game Music Emu via libgme [no]
237   --enable-libgsm          enable GSM de/encoding via libgsm [no]
238   --enable-libiec61883     enable iec61883 via libiec61883 [no]
239   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
240   --enable-libjack         enable JACK audio sound server [no]
241   --enable-libkvazaar      enable HEVC encoding via libkvazaar [no]
242   --enable-libmodplug      enable ModPlug via libmodplug [no]
243   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
244   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
245   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
246   --enable-libopencv       enable video filtering via libopencv [no]
247   --enable-libopenh264     enable H.264 encoding via OpenH264 [no]
248   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
249   --enable-libopenmpt      enable decoding tracked files via libopenmpt [no]
250   --enable-libopus         enable Opus de/encoding via libopus [no]
251   --enable-libpulse        enable Pulseaudio input via libpulse [no]
252   --enable-librsvg         enable SVG rasterization via librsvg [no]
253   --enable-librubberband   enable rubberband needed for rubberband filter [no]
254   --enable-librtmp         enable RTMP[E] support via librtmp [no]
255   --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
256   --enable-libsmbclient    enable Samba protocol via libsmbclient [no]
257   --enable-libsnappy       enable Snappy compression, needed for hap encoding [no]
258   --enable-libsoxr         enable Include libsoxr resampling [no]
259   --enable-libspeex        enable Speex de/encoding via libspeex [no]
260   --enable-libssh          enable SFTP protocol via libssh [no]
261   --enable-libtesseract    enable Tesseract, needed for ocr filter [no]
262   --enable-libtheora       enable Theora encoding via libtheora [no]
263   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
264   --enable-libv4l2         enable libv4l2/v4l-utils [no]
265   --enable-libvidstab      enable video stabilization using vid.stab [no]
266   --enable-libvmaf         enable vmaf filter via libvmaf [no]
267   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
268   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
269                            native implementation exists [no]
270   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
271   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
272   --enable-libwebp         enable WebP encoding via libwebp [no]
273   --enable-libx264         enable H.264 encoding via x264 [no]
274   --enable-libx265         enable HEVC encoding via x265 [no]
275   --enable-libxavs         enable AVS encoding via xavs [no]
276   --enable-libxcb          enable X11 grabbing using XCB [autodetect]
277   --enable-libxcb-shm      enable X11 grabbing shm communication [autodetect]
278   --enable-libxcb-xfixes   enable X11 grabbing mouse rendering [autodetect]
279   --enable-libxcb-shape    enable X11 grabbing shape rendering [autodetect]
280   --enable-libxvid         enable Xvid encoding via xvidcore,
281                            native MPEG-4/Xvid encoder exists [no]
282   --enable-libxml2         enable XML parsing using the C library libxml2 [no]
283   --enable-libzimg         enable z.lib, needed for zscale filter [no]
284   --enable-libzmq          enable message passing via libzmq [no]
285   --enable-libzvbi         enable teletext support via libzvbi [no]
286   --disable-lzma           disable lzma [autodetect]
287   --enable-decklink        enable Blackmagic DeckLink I/O support [no]
288   --enable-libndi_newtek   enable Newteck NDI I/O support [no]
289   --enable-mediacodec      enable Android MediaCodec support [no]
290   --enable-libmysofa       enable libmysofa, needed for sofalizer filter [no]
291   --enable-openal          enable OpenAL 1.1 capture support [no]
292   --enable-opencl          enable OpenCL code
293   --enable-opengl          enable OpenGL rendering [no]
294   --enable-openssl         enable openssl, needed for https support
295                            if gnutls is not used [no]
296   --disable-sndio          disable sndio support [autodetect]
297   --disable-schannel       disable SChannel SSP, needed for TLS support on
298                            Windows if openssl and gnutls are not used [autodetect]
299   --disable-sdl2           disable sdl2 [autodetect]
300   --disable-securetransport disable Secure Transport, needed for TLS support
301                            on OSX if openssl and gnutls are not used [autodetect]
302   --disable-xlib           disable xlib [autodetect]
303   --disable-zlib           disable zlib [autodetect]
304
305   The following libraries provide various hardware acceleration features:
306   --disable-audiotoolbox   disable Apple AudioToolbox code [autodetect]
307   --disable-cuda           disable dynamically linked Nvidia CUDA code [autodetect]
308   --enable-cuda-sdk        enable CUDA features that require the CUDA SDK [no]
309   --disable-cuvid          disable Nvidia CUVID support [autodetect]
310   --disable-d3d11va        disable Microsoft Direct3D 11 video acceleration code [autodetect]
311   --disable-dxva2          disable Microsoft DirectX 9 video acceleration code [autodetect]
312   --enable-libdrm          enable DRM code (Linux) [no]
313   --enable-libmfx          enable Intel MediaSDK (AKA Quick Sync Video) code via libmfx [no]
314   --enable-libnpp          enable Nvidia Performance Primitives-based code [no]
315   --enable-mmal            enable Broadcom Multi-Media Abstraction Layer (Raspberry Pi) via MMAL [no]
316   --disable-nvenc          disable Nvidia video encoding code [autodetect]
317   --enable-omx             enable OpenMAX IL code [no]
318   --enable-omx-rpi         enable OpenMAX IL code for Raspberry Pi [no]
319   --enable-rkmpp           enable Rockchip Media Process Platform code [no]
320   --disable-vaapi          disable Video Acceleration API (mainly Unix/Intel) code [autodetect]
321   --disable-vdpau          disable Nvidia Video Decode and Presentation API for Unix code [autodetect]
322   --disable-videotoolbox   disable VideoToolbox code [autodetect]
323
324 Toolchain options:
325   --arch=ARCH              select architecture [$arch]
326   --cpu=CPU                select the minimum required CPU (affects
327                            instruction selection, may crash on older CPUs)
328   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
329   --progs-suffix=SUFFIX    program name suffix []
330   --enable-cross-compile   assume a cross-compiler is used
331   --sysroot=PATH           root of cross-build tree
332   --sysinclude=PATH        location of cross-build system headers
333   --target-os=OS           compiler targets OS [$target_os]
334   --target-exec=CMD        command to run executables on target
335   --target-path=DIR        path to view of build directory on target
336   --target-samples=DIR     path to samples directory on target
337   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
338   --toolchain=NAME         set tool defaults according to NAME
339   --nm=NM                  use nm tool NM [$nm_default]
340   --ar=AR                  use archive tool AR [$ar_default]
341   --as=AS                  use assembler AS [$as_default]
342   --ln_s=LN_S              use symbolic link tool LN_S [$ln_s_default]
343   --strip=STRIP            use strip tool STRIP [$strip_default]
344   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
345   --x86asmexe=EXE          use nasm-compatible assembler EXE [$x86asmexe_default]
346   --cc=CC                  use C compiler CC [$cc_default]
347   --cxx=CXX                use C compiler CXX [$cxx_default]
348   --objcc=OCC              use ObjC compiler OCC [$cc_default]
349   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
350   --nvcc=NVCC              use Nvidia CUDA compiler NVCC [$nvcc_default]
351   --ld=LD                  use linker LD [$ld_default]
352   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
353   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
354   --ranlib=RANLIB          use ranlib RANLIB [$ranlib_default]
355   --doxygen=DOXYGEN        use DOXYGEN to generate API doc [$doxygen_default]
356   --host-cc=HOSTCC         use host C compiler HOSTCC
357   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
358   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
359   --host-ld=HOSTLD         use host linker HOSTLD
360   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
361   --host-libs=HLIBS        use libs HLIBS when linking for host
362   --host-os=OS             compiler host OS [$target_os]
363   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
364   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
365   --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
366   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
367   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
368   --extra-ldlibflags=ELDFLAGS add ELDFLAGS to LDLIBFLAGS [$LDLIBFLAGS]
369   --extra-libs=ELIBS       add ELIBS [$ELIBS]
370   --extra-version=STRING   version string suffix []
371   --optflags=OPTFLAGS      override optimization-related compiler flags
372   --nvccflags=NVCCFLAGS    override nvcc flags [$nvccflags_default]
373   --build-suffix=SUFFIX    library name suffix []
374   --enable-pic             build position-independent code
375   --enable-thumb           compile for Thumb instruction set
376   --enable-lto             use link-time optimization
377   --env="ENV=override"     override the environment variables
378
379 Advanced options (experts only):
380   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
381   --custom-allocator=NAME  use a supported custom allocator
382   --disable-symver         disable symbol versioning
383   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
384   --disable-safe-bitstream-reader
385                            disable buffer boundary checking in bitreaders
386                            (faster, but may crash)
387   --sws-max-filter-size=N  the max filter size swscale uses [$sws_max_filter_size_default]
388
389 Optimization options (experts only):
390   --disable-asm            disable all assembly optimizations
391   --disable-altivec        disable AltiVec optimizations
392   --disable-vsx            disable VSX optimizations
393   --disable-power8         disable POWER8 optimizations
394   --disable-amd3dnow       disable 3DNow! optimizations
395   --disable-amd3dnowext    disable 3DNow! extended optimizations
396   --disable-mmx            disable MMX optimizations
397   --disable-mmxext         disable MMXEXT optimizations
398   --disable-sse            disable SSE optimizations
399   --disable-sse2           disable SSE2 optimizations
400   --disable-sse3           disable SSE3 optimizations
401   --disable-ssse3          disable SSSE3 optimizations
402   --disable-sse4           disable SSE4 optimizations
403   --disable-sse42          disable SSE4.2 optimizations
404   --disable-avx            disable AVX optimizations
405   --disable-xop            disable XOP optimizations
406   --disable-fma3           disable FMA3 optimizations
407   --disable-fma4           disable FMA4 optimizations
408   --disable-avx2           disable AVX2 optimizations
409   --disable-aesni          disable AESNI optimizations
410   --disable-armv5te        disable armv5te optimizations
411   --disable-armv6          disable armv6 optimizations
412   --disable-armv6t2        disable armv6t2 optimizations
413   --disable-vfp            disable VFP optimizations
414   --disable-neon           disable NEON optimizations
415   --disable-inline-asm     disable use of inline assembly
416   --disable-x86asm         disable use of standalone x86 assembly
417   --disable-mipsdsp        disable MIPS DSP ASE R1 optimizations
418   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
419   --disable-msa            disable MSA optimizations
420   --disable-mipsfpu        disable floating point MIPS optimizations
421   --disable-mmi            disable Loongson SIMD optimizations
422   --disable-fast-unaligned consider unaligned accesses slow
423
424 Developer options (useful when working on FFmpeg itself):
425   --disable-debug          disable debugging symbols
426   --enable-debug=LEVEL     set the debug level [$debuglevel]
427   --disable-optimizations  disable compiler optimizations
428   --enable-extra-warnings  enable more compiler warnings
429   --disable-stripping      disable stripping of executables and shared libraries
430   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
431                            2 causes a slowdown at runtime.
432   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
433   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
434                            leaks and errors, using the specified valgrind binary.
435                            Cannot be combined with --target-exec
436   --enable-ftrapv          Trap arithmetic overflows
437   --samples=PATH           location of test samples for FATE, if not set use
438                            \$FATE_SAMPLES at make invocation time.
439   --enable-neon-clobber-test check NEON registers for clobbering (should be
440                            used only for debugging purposes)
441   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
442                            should be used only for debugging purposes)
443   --enable-random          randomly enable/disable components
444   --disable-random
445   --enable-random=LIST     randomly enable/disable specific components or
446   --disable-random=LIST    component groups. LIST is a comma-separated list
447                            of NAME[:PROB] entries where NAME is a component
448                            (group) and PROB the probability associated with
449                            NAME (default 0.5).
450   --random-seed=VALUE      seed value for --enable/disable-random
451   --disable-valgrind-backtrace do not print a backtrace under Valgrind
452                            (only applies to --disable-optimizations builds)
453   --enable-osfuzz          Enable building fuzzer tool
454   --libfuzzer=PATH         path to libfuzzer
455   --ignore-tests=TESTS     comma-separated list (without "fate-" prefix
456                            in the name) of tests whose result is ignored
457   --enable-linux-perf      enable Linux Performance Monitor API
458
459 NOTE: Object files are built at the place where configure is launched.
460 EOF
461   exit 0
462 }
463
464 quotes='""'
465 if test -t 1 && which tput >/dev/null 2>&1; then
466     ncolors=$(tput colors)
467     if test -n "$ncolors" && test $ncolors -ge 8; then
468         bold_color=$(tput bold)
469         warn_color=$(tput setaf 3)
470         error_color=$(tput setaf 1)
471         reset_color=$(tput sgr0)
472     fi
473     # 72 used instead of 80 since that's the default of pr
474     ncols=$(tput cols)
475 fi
476 : ${ncols:=72}
477
478 log(){
479     echo "$@" >> $logfile
480 }
481
482 log_file(){
483     log BEGIN $1
484     pr -n -t $1 >> $logfile
485     log END $1
486 }
487
488 warn(){
489     log "WARNING: $*"
490     WARNINGS="${WARNINGS}WARNING: $*\n"
491 }
492
493 die(){
494     log "$@"
495     echo "$error_color$bold_color$@$reset_color"
496     cat <<EOF
497
498 If you think configure made a mistake, make sure you are using the latest
499 version from Git.  If the latest version fails, report the problem to the
500 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
501 EOF
502     if disabled logging; then
503         cat <<EOF
504 Rerun configure with logging enabled (do not use --disable-logging), and
505 include the log this produces with your report.
506 EOF
507     else
508         cat <<EOF
509 Include the log file "$logfile" produced by configure as this will help
510 solve the problem.
511 EOF
512     fi
513     exit 1
514 }
515
516 # Avoid locale weirdness, besides we really just want to translate ASCII.
517 toupper(){
518     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
519 }
520
521 tolower(){
522     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
523 }
524
525 c_escape(){
526     echo "$*" | sed 's/["\\]/\\\0/g'
527 }
528
529 sh_quote(){
530     v=$(echo "$1" | sed "s/'/'\\\\''/g")
531     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
532     echo "$v"
533 }
534
535 cleanws(){
536     echo "$@" | sed 's/^ *//;s/[[:space:]][[:space:]]*/ /g;s/ *$//'
537 }
538
539 filter(){
540     pat=$1
541     shift
542     for v; do
543         eval "case $v in $pat) printf '%s ' $v ;; esac"
544     done
545 }
546
547 filter_out(){
548     pat=$1
549     shift
550     for v; do
551         eval "case $v in $pat) ;; *) printf '%s ' $v ;; esac"
552     done
553 }
554
555 map(){
556     m=$1
557     shift
558     for v; do eval $m; done
559 }
560
561 add_suffix(){
562     suffix=$1
563     shift
564     for v; do echo ${v}${suffix}; done
565 }
566
567 set_all(){
568     value=$1
569     shift
570     for var in $*; do
571         eval $var=$value
572     done
573 }
574
575 set_weak(){
576     value=$1
577     shift
578     for var; do
579         eval : \${$var:=$value}
580     done
581 }
582
583 sanitize_var_name(){
584     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
585 }
586
587 set_safe(){
588     var=$1
589     shift
590     eval $(sanitize_var_name "$var")='$*'
591 }
592
593 get_safe(){
594     eval echo \$$(sanitize_var_name "$1")
595 }
596
597 pushvar(){
598     for pvar in $*; do
599         eval level=\${${pvar}_level:=0}
600         eval ${pvar}_${level}="\$$pvar"
601         eval ${pvar}_level=$(($level+1))
602     done
603 }
604
605 popvar(){
606     for pvar in $*; do
607         eval level=\${${pvar}_level:-0}
608         test $level = 0 && continue
609         eval level=$(($level-1))
610         eval $pvar="\${${pvar}_${level}}"
611         eval ${pvar}_level=$level
612         eval unset ${pvar}_${level}
613     done
614 }
615
616 request(){
617     for var in $*; do
618         eval ${var}_requested=yes
619         eval $var=
620     done
621 }
622
623 enable(){
624     set_all yes $*
625 }
626
627 disable(){
628     set_all no $*
629 }
630
631 enable_weak(){
632     set_weak yes $*
633 }
634
635 disable_weak(){
636     set_weak no $*
637 }
638
639 enable_safe(){
640     for var; do
641         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
642     done
643 }
644
645 disable_safe(){
646     for var; do
647         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
648     done
649 }
650
651 do_enable_deep(){
652     for var; do
653         enabled $var && continue
654         eval sel="\$${var}_select"
655         eval sgs="\$${var}_suggest"
656         pushvar var sgs
657         enable_deep $sel
658         popvar sgs
659         enable_deep_weak $sgs
660         popvar var
661     done
662 }
663
664 enable_deep(){
665     do_enable_deep $*
666     enable $*
667 }
668
669 enable_deep_weak(){
670     for var; do
671         disabled $var && continue
672         pushvar var
673         do_enable_deep $var
674         popvar var
675         enable_weak $var
676     done
677 }
678
679 requested(){
680     test "${1#!}" = "$1" && op='=' || op=!=
681     eval test "x\$${1#!}_requested" $op "xyes"
682 }
683
684 enabled(){
685     test "${1#!}" = "$1" && op='=' || op=!=
686     eval test "x\$${1#!}" $op "xyes"
687 }
688
689 disabled(){
690     test "${1#!}" = "$1" && op='=' || op=!=
691     eval test "x\$${1#!}" $op "xno"
692 }
693
694 enabled_all(){
695     for opt; do
696         enabled $opt || return 1
697     done
698 }
699
700 disabled_all(){
701     for opt; do
702         disabled $opt || return 1
703     done
704 }
705
706 enabled_any(){
707     for opt; do
708         enabled $opt && return 0
709     done
710 }
711
712 disabled_any(){
713     for opt; do
714         disabled $opt && return 0
715     done
716     return 1
717 }
718
719 set_default(){
720     for opt; do
721         eval : \${$opt:=\$${opt}_default}
722     done
723 }
724
725 is_in(){
726     value=$1
727     shift
728     for var in $*; do
729         [ $var = $value ] && return 0
730     done
731     return 1
732 }
733
734 check_deps(){
735     for cfg; do
736         enabled ${cfg}_checking && die "Circular dependency for $cfg."
737         disabled ${cfg}_checking && continue
738         enable ${cfg}_checking
739
740         eval dep_all="\$${cfg}_deps"
741         eval dep_any="\$${cfg}_deps_any"
742         eval dep_con="\$${cfg}_conflict"
743         eval dep_sel="\$${cfg}_select"
744         eval dep_sgs="\$${cfg}_suggest"
745         eval dep_ifa="\$${cfg}_if"
746         eval dep_ifn="\$${cfg}_if_any"
747
748         pushvar cfg dep_all dep_any dep_con dep_sel dep_sgs dep_ifa dep_ifn
749         check_deps $dep_all $dep_any $dep_con $dep_sel $dep_sgs $dep_ifa $dep_ifn
750         popvar cfg dep_all dep_any dep_con dep_sel dep_sgs dep_ifa dep_ifn
751
752         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
753         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
754         enabled_all  $dep_all || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but not all dependencies are satisfied: $dep_all"; }
755         enabled_any  $dep_any || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but not any dependency is satisfied: $dep_any"; }
756         disabled_all $dep_con || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but some conflicting dependencies are unsatisfied: $dep_con"; }
757         disabled_any $dep_sel && { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but some selected dependency is unsatisfied: $dep_sel"; }
758
759         enabled $cfg && enable_deep_weak $dep_sel $dep_sgs
760
761         for dep in $dep_all $dep_any $dep_sel $dep_sgs; do
762             # filter out library deps, these do not belong in extralibs
763             is_in $dep $LIBRARY_LIST && continue
764             enabled $dep && eval append ${cfg}_extralibs ${dep}_extralibs
765         done
766
767         disable ${cfg}_checking
768     done
769 }
770
771 print_config(){
772     pfx=$1
773     files=$2
774     shift 2
775     map 'eval echo "$v \${$v:-no}"' "$@" |
776     awk "BEGIN { split(\"$files\", files) }
777         {
778             c = \"$pfx\" toupper(\$1);
779             v = \$2;
780             sub(/yes/, 1, v);
781             sub(/no/,  0, v);
782             for (f in files) {
783                 file = files[f];
784                 if (file ~ /\\.h\$/) {
785                     printf(\"#define %s %d\\n\", c, v) >>file;
786                 } else if (file ~ /\\.asm\$/) {
787                     printf(\"%%define %s %d\\n\", c, v) >>file;
788                 } else if (file ~ /\\.mak\$/) {
789                     n = -v ? \"\" : \"!\";
790                     printf(\"%s%s=yes\\n\", n, c) >>file;
791                 } else if (file ~ /\\.texi\$/) {
792                     pre = -v ? \"\" : \"@c \";
793                     yesno = \$2;
794                     c2 = tolower(c);
795                     gsub(/_/, \"-\", c2);
796                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
797                 }
798             }
799         }"
800 }
801
802 print_enabled(){
803     suf=$1
804     shift
805     for v; do
806         enabled $v && printf "%s\n" ${v%$suf}
807     done
808 }
809
810 append(){
811     var=$1
812     shift
813     eval "$var=\"\$$var $*\""
814 }
815
816 prepend(){
817     var=$1
818     shift
819     eval "$var=\"$* \$$var\""
820 }
821
822 unique(){
823     var=$1
824     uniq_list=""
825     for tok in $(eval echo \$$var); do
826         uniq_list="$(filter_out $tok $uniq_list) $tok"
827     done
828     eval "$var=\"${uniq_list}\""
829 }
830
831 resolve(){
832     var=$1
833     tmpvar=
834     for entry in $(eval echo \$$var); do
835         tmpvar="$tmpvar $(eval echo \$${entry})"
836     done
837     eval "$var=\"${tmpvar}\""
838 }
839
840 add_cppflags(){
841     append CPPFLAGS "$@"
842 }
843
844 add_cflags(){
845     append CFLAGS $($cflags_filter "$@")
846 }
847
848 add_cflags_headers(){
849     append CFLAGS_HEADERS $($cflags_filter "$@")
850 }
851
852 add_cxxflags(){
853     append CXXFLAGS $($cflags_filter "$@")
854 }
855
856 add_asflags(){
857     append ASFLAGS $($asflags_filter "$@")
858 }
859
860 add_objcflags(){
861     append OBJCFLAGS $($objcflags_filter "$@")
862 }
863
864 add_ldflags(){
865     append LDFLAGS $($ldflags_filter "$@")
866 }
867
868 add_ldexeflags(){
869     append LDEXEFLAGS $($ldflags_filter "$@")
870 }
871
872 add_ldlibflags(){
873     append LDLIBFLAGS $($ldflags_filter "$@")
874 }
875
876 add_stripflags(){
877     append ASMSTRIPFLAGS "$@"
878 }
879
880 add_extralibs(){
881     prepend extralibs $($ldflags_filter "$@")
882 }
883
884 add_host_cppflags(){
885     append host_cppflags "$@"
886 }
887
888 add_host_cflags(){
889     append host_cflags $($host_cflags_filter "$@")
890 }
891
892 add_host_ldflags(){
893     append host_ldflags $($host_ldflags_filter "$@")
894 }
895
896 add_compat(){
897     append compat_objs $1
898     shift
899     map 'add_cppflags -D$v' "$@"
900 }
901
902 check_cmd(){
903     log "$@"
904     "$@" >> $logfile 2>&1
905 }
906
907 check_stat(){
908     log check_stat "$@"
909     stat "$1" >> $logfile 2>&1
910 }
911
912 cc_o(){
913     eval printf '%s\\n' $CC_O
914 }
915
916 cc_e(){
917     eval printf '%s\\n' $CC_E
918 }
919
920 check_cc(){
921     log check_cc "$@"
922     cat > $TMPC
923     log_file $TMPC
924     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
925 }
926
927 check_cxx(){
928     log check_cxx "$@"
929     cat > $TMPCPP
930     log_file $TMPCPP
931     check_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
932 }
933
934 check_objcc(){
935     log check_objcc "$@"
936     cat > $TMPM
937     log_file $TMPM
938     check_cmd $objcc -Werror=missing-prototypes $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPM
939 }
940
941 check_cpp(){
942     log check_cpp "$@"
943     cat > $TMPC
944     log_file $TMPC
945     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
946 }
947
948 as_o(){
949     eval printf '%s\\n' $AS_O
950 }
951
952 check_as(){
953     log check_as "$@"
954     cat > $TMPS
955     log_file $TMPS
956     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
957 }
958
959 check_inline_asm(){
960     log check_inline_asm "$@"
961     name="$1"
962     code="$2"
963     shift 2
964     disable $name
965     check_cc "$@" <<EOF && enable $name
966 void foo(void){ __asm__ volatile($code); }
967 EOF
968 }
969
970 check_inline_asm_flags(){
971     log check_inline_asm_flags "$@"
972     name="$1"
973     code="$2"
974     flags=''
975     shift 2
976     while [ "$1" != "" ]; do
977       append flags $1
978       shift
979     done;
980     disable $name
981     cat > $TMPC <<EOF
982 void foo(void){ __asm__ volatile($code); }
983 EOF
984     log_file $TMPC
985     check_cmd $cc $CPPFLAGS $CFLAGS $flags "$@" $CC_C $(cc_o $TMPO) $TMPC &&
986     enable $name && add_cflags $flags && add_asflags $flags && add_ldflags $flags
987 }
988
989 check_insn(){
990     log check_insn "$@"
991     check_inline_asm ${1}_inline "\"$2\""
992     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
993 }
994
995 check_x86asm(){
996     log check_x86asm "$@"
997     echo "$1" > $TMPS
998     log_file $TMPS
999     shift 1
1000     check_cmd $x86asmexe $X86ASMFLAGS -Werror "$@" -o $TMPO $TMPS
1001 }
1002
1003 ld_o(){
1004     eval printf '%s\\n' $LD_O
1005 }
1006
1007 check_ld(){
1008     log check_ld "$@"
1009     type=$1
1010     shift 1
1011     flags=$(filter_out '-l*|*.so' $@)
1012     libs=$(filter '-l*|*.so' $@)
1013     check_$type $($cflags_filter $flags) || return
1014     flags=$($ldflags_filter $flags)
1015     libs=$($ldflags_filter $libs)
1016     check_cmd $ld $LDFLAGS $LDEXEFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
1017 }
1018
1019 print_include(){
1020     hdr=$1
1021     test "${hdr%.h}" = "${hdr}" &&
1022         echo "#include $hdr"    ||
1023         echo "#include <$hdr>"
1024 }
1025
1026 check_code(){
1027     log check_code "$@"
1028     check=$1
1029     headers=$2
1030     code=$3
1031     shift 3
1032     {
1033         for hdr in $headers; do
1034             print_include $hdr
1035         done
1036         echo "int main(void) { $code; return 0; }"
1037     } | check_$check "$@"
1038 }
1039
1040 check_cppflags(){
1041     log check_cppflags "$@"
1042     check_cpp "$@" <<EOF && append CPPFLAGS "$@"
1043 #include <stdlib.h>
1044 EOF
1045 }
1046
1047 test_cflags(){
1048     log test_cflags "$@"
1049     set -- $($cflags_filter "$@")
1050     check_cc "$@" <<EOF
1051 int x;
1052 EOF
1053 }
1054
1055 check_cflags(){
1056     log check_cflags "$@"
1057     test_cflags "$@" && add_cflags "$@"
1058 }
1059
1060 check_cxxflags(){
1061     log check_cxxflags "$@"
1062     set -- $($cflags_filter "$@")
1063     check_cxx "$@" <<EOF && append CXXFLAGS "$@"
1064 int x;
1065 EOF
1066 }
1067
1068 test_objcflags(){
1069     log test_objcflags "$@"
1070     set -- $($objcflags_filter "$@")
1071     check_objcc "$@" <<EOF
1072 int x;
1073 EOF
1074 }
1075
1076 check_objcflags(){
1077     log check_objcflags "$@"
1078     test_objcflags "$@" && add_objcflags "$@"
1079 }
1080
1081 test_ldflags(){
1082     log test_ldflags "$@"
1083     check_ld "cc" "$@" <<EOF
1084 int main(void){ return 0; }
1085 EOF
1086 }
1087
1088 check_ldflags(){
1089     log check_ldflags "$@"
1090     test_ldflags "$@" && add_ldflags "$@"
1091 }
1092
1093 test_stripflags(){
1094     log test_stripflags "$@"
1095     # call check_cc to get a fresh TMPO
1096     check_cc <<EOF
1097 int main(void) { return 0; }
1098 EOF
1099     check_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
1100 }
1101
1102 check_stripflags(){
1103     log check_stripflags "$@"
1104     test_stripflags "$@" && add_stripflags "$@"
1105 }
1106
1107 check_header(){
1108     log check_header "$@"
1109     header=$1
1110     shift
1111     disable_safe $header
1112     check_cpp "$@" <<EOF && enable_safe $header
1113 #include <$header>
1114 int x;
1115 EOF
1116 }
1117
1118 check_header_objcc(){
1119     log check_header_objcc "$@"
1120     rm -f -- "$TMPO"
1121     header=$1
1122     shift
1123     disable_safe $header
1124     {
1125        echo "#include <$header>"
1126        echo "int main(void) { return 0; }"
1127     } | check_objcc && check_stat "$TMPO" && enable_safe $header
1128 }
1129
1130 check_apple_framework(){
1131     log check_apple_framework "$@"
1132     framework="$1"
1133     name="$(tolower $framework)"
1134     header="${framework}/${framework}.h"
1135     disable $name
1136     check_header_objcc $header &&
1137         enable $name && eval ${name}_extralibs='"-framework $framework"'
1138 }
1139
1140 check_func(){
1141     log check_func "$@"
1142     func=$1
1143     shift
1144     disable $func
1145     check_ld "cc" "$@" <<EOF && enable $func
1146 extern int $func();
1147 int main(void){ $func(); }
1148 EOF
1149 }
1150
1151 check_complexfunc(){
1152     log check_complexfunc "$@"
1153     func=$1
1154     narg=$2
1155     shift 2
1156     test $narg = 2 && args="f, g" || args="f * I"
1157     disable $func
1158     check_ld "cc" "$@" <<EOF && enable $func
1159 #include <complex.h>
1160 #include <math.h>
1161 float foo(complex float f, complex float g) { return $func($args); }
1162 int main(void){ return (int) foo; }
1163 EOF
1164 }
1165
1166 check_mathfunc(){
1167     log check_mathfunc "$@"
1168     func=$1
1169     narg=$2
1170     shift 2
1171     test $narg = 2 && args="f, g" || args="f"
1172     disable $func
1173     check_ld "cc" "$@" <<EOF && enable $func
1174 #include <math.h>
1175 float foo(float f, float g) { return $func($args); }
1176 int main(void){ return (int) foo; }
1177 EOF
1178 }
1179
1180 check_func_headers(){
1181     log check_func_headers "$@"
1182     headers=$1
1183     funcs=$2
1184     shift 2
1185     {
1186         for hdr in $headers; do
1187             print_include $hdr
1188         done
1189         echo "#include <stdint.h>"
1190         for func in $funcs; do
1191             echo "long check_$func(void) { return (long) $func; }"
1192         done
1193         echo "int main(void) { int ret = 0;"
1194         # LTO could optimize out the test functions without this
1195         for func in $funcs; do
1196             echo " ret |= ((intptr_t)check_$func) & 0xFFFF;"
1197         done
1198         echo "return ret; }"
1199     } | check_ld "cc" "$@" && enable $funcs && enable_safe $headers
1200 }
1201
1202 check_class_headers_cpp(){
1203     log check_class_headers_cpp "$@"
1204     headers=$1
1205     classes=$2
1206     shift 2
1207     {
1208         for hdr in $headers; do
1209             echo "#include <$hdr>"
1210         done
1211         echo "int main(void) { "
1212         i=1
1213         for class in $classes; do
1214             echo "$class obj$i;"
1215             i=$(expr $i + 1)
1216         done
1217         echo "return 0; }"
1218     } | check_ld "cxx" "$@" && enable $funcs && enable_safe $headers
1219 }
1220
1221 check_cpp_condition(){
1222     log check_cpp_condition "$@"
1223     header=$1
1224     condition=$2
1225     shift 2
1226     check_cpp "$@" <<EOF
1227 #include <$header>
1228 #if !($condition)
1229 #error "unsatisfied condition: $condition"
1230 #endif
1231 EOF
1232 }
1233
1234 test_cflags_cc(){
1235     log test_cflags_cc "$@"
1236     flags=$1
1237     header=$2
1238     condition=$3
1239     shift 3
1240     set -- $($cflags_filter "$flags")
1241     check_cc "$@" <<EOF
1242 #include <$header>
1243 #if !($condition)
1244 #error "unsatisfied condition: $condition"
1245 #endif
1246 EOF
1247 }
1248
1249 check_lib(){
1250     log check_lib "$@"
1251     name="$1"
1252     headers="$2"
1253     funcs="$3"
1254     shift 3
1255     disable $name
1256     check_func_headers "$headers" "$funcs" "$@" &&
1257         enable $name && eval ${name}_extralibs="\$@"
1258 }
1259
1260 check_lib_cpp(){
1261     log check_lib_cpp "$@"
1262     name="$1"
1263     headers="$2"
1264     classes="$3"
1265     shift 3
1266     disable $name
1267     check_class_headers_cpp "$headers" "$classes" "$@" &&
1268         enable $name && eval ${name}_extralibs="\$@"
1269 }
1270
1271 check_pkg_config(){
1272     log check_pkg_config "$@"
1273     name="$1"
1274     pkg_version="$2"
1275     pkg="${2%% *}"
1276     headers="$3"
1277     funcs="$4"
1278     shift 4
1279     disable $name
1280     check_cmd $pkg_config --exists --print-errors $pkg_version || return
1281     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1282     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1283     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1284         enable $name &&
1285         set_safe "${name}_cflags"    $pkg_cflags &&
1286         set_safe "${name}_extralibs" $pkg_libs
1287 }
1288
1289 check_exec(){
1290     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1291 }
1292
1293 check_exec_crash(){
1294     log check_exec_crash "$@"
1295     code=$(cat)
1296
1297     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1298     # are safe but may not be available everywhere.  Thus we use
1299     # raise(SIGTERM) instead.  The check is run in a subshell so we
1300     # can redirect the "Terminated" message from the shell.  SIGBUS
1301     # is not defined by standard C so it is used conditionally.
1302
1303     (check_exec "$@") >> $logfile 2>&1 <<EOF
1304 #include <signal.h>
1305 static void sighandler(int sig){
1306     raise(SIGTERM);
1307 }
1308 int foo(void){
1309     $code
1310 }
1311 int (*func_ptr)(void) = foo;
1312 int main(void){
1313     signal(SIGILL, sighandler);
1314     signal(SIGFPE, sighandler);
1315     signal(SIGSEGV, sighandler);
1316 #ifdef SIGBUS
1317     signal(SIGBUS, sighandler);
1318 #endif
1319     return func_ptr();
1320 }
1321 EOF
1322 }
1323
1324 check_type(){
1325     log check_type "$@"
1326     headers=$1
1327     type=$2
1328     shift 2
1329     disable_safe "$type"
1330     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1331 }
1332
1333 check_struct(){
1334     log check_struct "$@"
1335     headers=$1
1336     struct=$2
1337     member=$3
1338     shift 3
1339     disable_safe "${struct}_${member}"
1340     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1341         enable_safe "${struct}_${member}"
1342 }
1343
1344 check_builtin(){
1345     log check_builtin "$@"
1346     name=$1
1347     headers=$2
1348     builtin=$3
1349     shift 3
1350     disable "$name"
1351     check_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1352 }
1353
1354 check_compile_assert(){
1355     log check_compile_assert "$@"
1356     name=$1
1357     headers=$2
1358     condition=$3
1359     shift 3
1360     disable "$name"
1361     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1362 }
1363
1364 require(){
1365     log require "$@"
1366     name_version="$1"
1367     name="${1%% *}"
1368     headers="$2"
1369     func="$3"
1370     shift 3
1371     check_lib $name "$headers" $func "$@" || die "ERROR: $name_version not found"
1372 }
1373
1374 require_cpp(){
1375     name="$1"
1376     headers="$2"
1377     classes="$3"
1378     shift 3
1379     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1380 }
1381
1382 require_header(){
1383     log require "$@"
1384     header="$1"
1385     shift
1386     check_header "$header" "$@" || die "ERROR: $header header not found"
1387 }
1388
1389 require_cpp_condition(){
1390     log require "$@"
1391     header="$1"
1392     condition="$2"
1393     shift 2
1394     check_cpp_condition "$header" "$condition" "$@" || die "ERROR: $condition not satisfied"
1395 }
1396
1397 use_pkg_config(){
1398     log use_pkg_config "$@"
1399     name="$1"
1400     check_pkg_config "$@" || return 1
1401     add_cflags    $(get_safe "${name}_cflags")
1402 }
1403
1404 require_pkg_config(){
1405     log require_pkg_config "$@"
1406     pkg_version="$2"
1407     use_pkg_config "$@" || die "ERROR: $pkg_version not found using pkg-config$pkg_config_fail_message"
1408 }
1409
1410 hostcc_e(){
1411     eval printf '%s\\n' $HOSTCC_E
1412 }
1413
1414 hostcc_o(){
1415     eval printf '%s\\n' $HOSTCC_O
1416 }
1417
1418 check_host_cc(){
1419     log check_host_cc "$@"
1420     cat > $TMPC
1421     log_file $TMPC
1422     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1423 }
1424
1425 check_host_cpp(){
1426     log check_host_cpp "$@"
1427     cat > $TMPC
1428     log_file $TMPC
1429     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1430 }
1431
1432 check_host_cppflags(){
1433     log check_host_cppflags "$@"
1434     check_host_cpp "$@" <<EOF && append host_cppflags "$@"
1435 #include <stdlib.h>
1436 EOF
1437 }
1438
1439 check_host_cflags(){
1440     log check_host_cflags "$@"
1441     set -- $($host_cflags_filter "$@")
1442     check_host_cc "$@" <<EOF && append host_cflags "$@"
1443 int x;
1444 EOF
1445 }
1446
1447 check_host_cpp_condition(){
1448     log check_host_cpp_condition "$@"
1449     header=$1
1450     condition=$2
1451     shift 2
1452     check_host_cpp "$@" <<EOF
1453 #include <$header>
1454 #if !($condition)
1455 #error "unsatisfied condition: $condition"
1456 #endif
1457 EOF
1458 }
1459
1460 cp_if_changed(){
1461     cmp -s "$1" "$2" && { test "$quiet" != "yes" && echo "$2 is unchanged"; } && return
1462     mkdir -p "$(dirname $2)"
1463     cp -f "$1" "$2"
1464 }
1465
1466 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1467 # system-dependent things.
1468
1469 AVCODEC_COMPONENTS="
1470     bsfs
1471     decoders
1472     encoders
1473     hwaccels
1474     parsers
1475 "
1476
1477 AVDEVICE_COMPONENTS="
1478     indevs
1479     outdevs
1480 "
1481
1482 AVFILTER_COMPONENTS="
1483     filters
1484 "
1485
1486 AVFORMAT_COMPONENTS="
1487     demuxers
1488     muxers
1489     protocols
1490 "
1491
1492 AVRESAMPLE_COMPONENTS=""
1493
1494 AVUTIL_COMPONENTS=""
1495
1496 COMPONENT_LIST="
1497     $AVCODEC_COMPONENTS
1498     $AVDEVICE_COMPONENTS
1499     $AVFILTER_COMPONENTS
1500     $AVFORMAT_COMPONENTS
1501     $AVRESAMPLE_COMPONENTS
1502     $AVUTIL_COMPONENTS
1503 "
1504
1505 EXAMPLE_LIST="
1506     avio_dir_cmd_example
1507     avio_reading_example
1508     decode_audio_example
1509     decode_video_example
1510     demuxing_decoding_example
1511     encode_audio_example
1512     encode_video_example
1513     extract_mvs_example
1514     filter_audio_example
1515     filtering_audio_example
1516     filtering_video_example
1517     http_multiclient_example
1518     hw_decode_example
1519     metadata_example
1520     muxing_example
1521     qsvdec_example
1522     remuxing_example
1523     resampling_audio_example
1524     scaling_video_example
1525     transcode_aac_example
1526     transcoding_example
1527 "
1528
1529 EXTERNAL_AUTODETECT_LIBRARY_LIST="
1530     alsa
1531     appkit
1532     avfoundation
1533     bzlib
1534     coreimage
1535     iconv
1536     libxcb
1537     libxcb_shm
1538     libxcb_shape
1539     libxcb_xfixes
1540     lzma
1541     schannel
1542     sdl2
1543     securetransport
1544     sndio
1545     xlib
1546     zlib
1547 "
1548
1549 EXTERNAL_LIBRARY_GPL_LIST="
1550     avisynth
1551     frei0r
1552     libcdio
1553     librubberband
1554     libvidstab
1555     libx264
1556     libx265
1557     libxavs
1558     libxvid
1559 "
1560
1561 EXTERNAL_LIBRARY_NONFREE_LIST="
1562     decklink
1563     libndi_newtek
1564     libfdk_aac
1565     openssl
1566 "
1567
1568 EXTERNAL_LIBRARY_VERSION3_LIST="
1569     gmp
1570     libopencore_amrnb
1571     libopencore_amrwb
1572     libvo_amrwbenc
1573     rkmpp
1574 "
1575
1576 EXTERNAL_LIBRARY_GPLV3_LIST="
1577     libsmbclient
1578 "
1579
1580 EXTERNAL_LIBRARY_LIST="
1581     $EXTERNAL_LIBRARY_GPL_LIST
1582     $EXTERNAL_LIBRARY_NONFREE_LIST
1583     $EXTERNAL_LIBRARY_VERSION3_LIST
1584     $EXTERNAL_LIBRARY_GPLV3_LIST
1585     chromaprint
1586     gcrypt
1587     gnutls
1588     jni
1589     ladspa
1590     libass
1591     libbluray
1592     libbs2b
1593     libcaca
1594     libcelt
1595     libdc1394
1596     libdrm
1597     libflite
1598     libfontconfig
1599     libfreetype
1600     libfribidi
1601     libgme
1602     libgsm
1603     libiec61883
1604     libilbc
1605     libjack
1606     libkvazaar
1607     libmodplug
1608     libmp3lame
1609     libmysofa
1610     libopencv
1611     libopenh264
1612     libopenjpeg
1613     libopenmpt
1614     libopus
1615     libpulse
1616     librsvg
1617     librtmp
1618     libshine
1619     libsmbclient
1620     libsnappy
1621     libsoxr
1622     libspeex
1623     libssh
1624     libtesseract
1625     libtheora
1626     libtwolame
1627     libv4l2
1628     libvmaf
1629     libvorbis
1630     libvpx
1631     libwavpack
1632     libwebp
1633     libxml2
1634     libzimg
1635     libzmq
1636     libzvbi
1637     mediacodec
1638     openal
1639     opencl
1640     opengl
1641 "
1642
1643 HWACCEL_AUTODETECT_LIBRARY_LIST="
1644     audiotoolbox
1645     crystalhd
1646     cuda
1647     cuvid
1648     d3d11va
1649     dxva2
1650     nvenc
1651     vaapi
1652     vdpau
1653     videotoolbox
1654     v4l2_m2m
1655     xvmc
1656 "
1657
1658 # catchall list of things that require external libs to link
1659 EXTRALIBS_LIST="
1660     cpu_init
1661     cws2fws
1662 "
1663
1664 HWACCEL_LIBRARY_NONFREE_LIST="
1665     cuda_sdk
1666     libnpp
1667 "
1668
1669 HWACCEL_LIBRARY_LIST="
1670     $HWACCEL_LIBRARY_NONFREE_LIST
1671     libmfx
1672     mmal
1673     omx
1674 "
1675
1676 DOCUMENT_LIST="
1677     doc
1678     htmlpages
1679     manpages
1680     podpages
1681     txtpages
1682 "
1683
1684 FEATURE_LIST="
1685     ftrapv
1686     gray
1687     hardcoded_tables
1688     omx_rpi
1689     runtime_cpudetect
1690     safe_bitstream_reader
1691     shared
1692     small
1693     static
1694     swscale_alpha
1695 "
1696
1697 LIBRARY_LIST="
1698     avcodec
1699     avdevice
1700     avfilter
1701     avformat
1702     avresample
1703     avutil
1704     postproc
1705     swresample
1706     swscale
1707 "
1708
1709 LICENSE_LIST="
1710     gpl
1711     nonfree
1712     version3
1713 "
1714
1715 PROGRAM_LIST="
1716     ffplay
1717     ffprobe
1718     ffserver
1719     ffmpeg
1720 "
1721
1722 SUBSYSTEM_LIST="
1723     dct
1724     dwt
1725     error_resilience
1726     faan
1727     fast_unaligned
1728     fft
1729     lsp
1730     lzo
1731     mdct
1732     pixelutils
1733     network
1734     rdft
1735 "
1736
1737 # COMPONENT_LIST needs to come last to ensure correct dependency checking
1738 CONFIG_LIST="
1739     $DOCUMENT_LIST
1740     $EXAMPLE_LIST
1741     $EXTERNAL_LIBRARY_LIST
1742     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1743     $HWACCEL_LIBRARY_LIST
1744     $HWACCEL_AUTODETECT_LIBRARY_LIST
1745     $FEATURE_LIST
1746     $LICENSE_LIST
1747     $LIBRARY_LIST
1748     $PROGRAM_LIST
1749     $SUBSYSTEM_LIST
1750     autodetect
1751     fontconfig
1752     linux_perf
1753     memory_poisoning
1754     neon_clobber_test
1755     ossfuzz
1756     pic
1757     thumb
1758     valgrind_backtrace
1759     xmm_clobber_test
1760     $COMPONENT_LIST
1761 "
1762
1763 THREADS_LIST="
1764     pthreads
1765     os2threads
1766     w32threads
1767 "
1768
1769 ATOMICS_LIST="
1770     atomics_gcc
1771     atomics_suncc
1772     atomics_win32
1773 "
1774
1775 AUTODETECT_LIBS="
1776     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1777     $HWACCEL_AUTODETECT_LIBRARY_LIST
1778     $THREADS_LIST
1779 "
1780
1781 ARCH_LIST="
1782     aarch64
1783     alpha
1784     arm
1785     avr32
1786     avr32_ap
1787     avr32_uc
1788     bfin
1789     ia64
1790     m68k
1791     mips
1792     mips64
1793     parisc
1794     ppc
1795     ppc64
1796     s390
1797     sh4
1798     sparc
1799     sparc64
1800     tilegx
1801     tilepro
1802     tomi
1803     x86
1804     x86_32
1805     x86_64
1806 "
1807
1808 ARCH_EXT_LIST_ARM="
1809     armv5te
1810     armv6
1811     armv6t2
1812     armv8
1813     neon
1814     vfp
1815     vfpv3
1816     setend
1817 "
1818
1819 ARCH_EXT_LIST_MIPS="
1820     mipsfpu
1821     mips32r2
1822     mips32r5
1823     mips64r2
1824     mips32r6
1825     mips64r6
1826     mipsdsp
1827     mipsdspr2
1828     msa
1829 "
1830
1831 ARCH_EXT_LIST_LOONGSON="
1832     loongson2
1833     loongson3
1834     mmi
1835 "
1836
1837 ARCH_EXT_LIST_X86_SIMD="
1838     aesni
1839     amd3dnow
1840     amd3dnowext
1841     avx
1842     avx2
1843     fma3
1844     fma4
1845     mmx
1846     mmxext
1847     sse
1848     sse2
1849     sse3
1850     sse4
1851     sse42
1852     ssse3
1853     xop
1854 "
1855
1856 ARCH_EXT_LIST_PPC="
1857     altivec
1858     dcbzl
1859     ldbrx
1860     power8
1861     ppc4xx
1862     vsx
1863 "
1864
1865 ARCH_EXT_LIST_X86="
1866     $ARCH_EXT_LIST_X86_SIMD
1867     cpunop
1868     i686
1869 "
1870
1871 ARCH_EXT_LIST="
1872     $ARCH_EXT_LIST_ARM
1873     $ARCH_EXT_LIST_PPC
1874     $ARCH_EXT_LIST_X86
1875     $ARCH_EXT_LIST_MIPS
1876     $ARCH_EXT_LIST_LOONGSON
1877 "
1878
1879 ARCH_FEATURES="
1880     aligned_stack
1881     fast_64bit
1882     fast_clz
1883     fast_cmov
1884     local_aligned
1885     simd_align_16
1886     simd_align_32
1887 "
1888
1889 BUILTIN_LIST="
1890     atomic_cas_ptr
1891     machine_rw_barrier
1892     MemoryBarrier
1893     mm_empty
1894     rdtsc
1895     sarestart
1896     sem_timedwait
1897     sync_val_compare_and_swap
1898 "
1899 HAVE_LIST_CMDLINE="
1900     inline_asm
1901     symver
1902     x86asm
1903 "
1904
1905 HAVE_LIST_PUB="
1906     bigendian
1907     fast_unaligned
1908 "
1909
1910 HEADERS_LIST="
1911     altivec_h
1912     arpa_inet_h
1913     asm_types_h
1914     cdio_paranoia_h
1915     cdio_paranoia_paranoia_h
1916     cuda_h
1917     d3d11_h
1918     dispatch_dispatch_h
1919     dev_bktr_ioctl_bt848_h
1920     dev_bktr_ioctl_meteor_h
1921     dev_ic_bt8xx_h
1922     dev_video_bktr_ioctl_bt848_h
1923     dev_video_meteor_ioctl_meteor_h
1924     direct_h
1925     dirent_h
1926     dlfcn_h
1927     dxgidebug_h
1928     dxva_h
1929     ES2_gl_h
1930     gsm_h
1931     io_h
1932     mach_mach_time_h
1933     machine_ioctl_bt848_h
1934     machine_ioctl_meteor_h
1935     malloc_h
1936     opencv2_core_core_c_h
1937     OpenGL_gl3_h
1938     poll_h
1939     soundcard_h
1940     stdatomic_h
1941     sys_mman_h
1942     sys_param_h
1943     sys_resource_h
1944     sys_select_h
1945     sys_soundcard_h
1946     sys_time_h
1947     sys_un_h
1948     sys_videoio_h
1949     termios_h
1950     udplite_h
1951     unistd_h
1952     valgrind_valgrind_h
1953     windows_h
1954     winsock2_h
1955 "
1956
1957 INTRINSICS_LIST="
1958     intrinsics_neon
1959 "
1960
1961 COMPLEX_FUNCS="
1962     cabs
1963     cexp
1964 "
1965
1966 MATH_FUNCS="
1967     atanf
1968     atan2f
1969     cbrt
1970     cbrtf
1971     copysign
1972     cosf
1973     erf
1974     exp2
1975     exp2f
1976     expf
1977     hypot
1978     isfinite
1979     isinf
1980     isnan
1981     ldexpf
1982     llrint
1983     llrintf
1984     log2
1985     log2f
1986     log10f
1987     lrint
1988     lrintf
1989     powf
1990     rint
1991     round
1992     roundf
1993     sinf
1994     trunc
1995     truncf
1996 "
1997
1998 SYSTEM_FUNCS="
1999     access
2000     aligned_malloc
2001     arc4random
2002     clock_gettime
2003     closesocket
2004     CommandLineToArgvW
2005     CoTaskMemFree
2006     CryptGenRandom
2007     fcntl
2008     flt_lim
2009     fork
2010     getaddrinfo
2011     gethrtime
2012     getopt
2013     GetProcessAffinityMask
2014     GetProcessMemoryInfo
2015     GetProcessTimes
2016     getrusage
2017     GetSystemTimeAsFileTime
2018     gettimeofday
2019     glob
2020     glXGetProcAddress
2021     gmtime_r
2022     inet_aton
2023     isatty
2024     kbhit
2025     LoadLibrary
2026     localtime_r
2027     lstat
2028     lzo1x_999_compress
2029     mach_absolute_time
2030     MapViewOfFile
2031     memalign
2032     mkstemp
2033     mmap
2034     mprotect
2035     nanosleep
2036     PeekNamedPipe
2037     posix_memalign
2038     pthread_cancel
2039     sched_getaffinity
2040     SetConsoleTextAttribute
2041     SetConsoleCtrlHandler
2042     setmode
2043     setrlimit
2044     Sleep
2045     strerror_r
2046     sysconf
2047     sysctl
2048     usleep
2049     UTGetOSTypeFromString
2050     VirtualAlloc
2051     wglGetProcAddress
2052 "
2053
2054 TOOLCHAIN_FEATURES="
2055     as_dn_directive
2056     as_fpu_directive
2057     as_func
2058     as_object_arch
2059     asm_mod_q
2060     attribute_may_alias
2061     attribute_packed
2062     blocks_extension
2063     ebp_available
2064     ebx_available
2065     gnu_as
2066     gnu_windres
2067     ibm_asm
2068     inline_asm_direct_symbol_refs
2069     inline_asm_labels
2070     inline_asm_nonlocal_labels
2071     pragma_deprecated
2072     rsync_contimeout
2073     symver_asm_label
2074     symver_gnu_asm
2075     vfp_args
2076     xform_asm
2077     xmm_clobbers
2078 "
2079
2080 TYPES_LIST="
2081     CONDITION_VARIABLE_Ptr
2082     kCMVideoCodecType_HEVC
2083     socklen_t
2084     struct_addrinfo
2085     struct_group_source_req
2086     struct_ip_mreq_source
2087     struct_ipv6_mreq
2088     struct_msghdr_msg_flags
2089     struct_pollfd
2090     struct_rusage_ru_maxrss
2091     struct_sctp_event_subscribe
2092     struct_sockaddr_in6
2093     struct_sockaddr_sa_len
2094     struct_sockaddr_storage
2095     struct_stat_st_mtim_tv_nsec
2096     struct_v4l2_frmivalenum_discrete
2097 "
2098
2099 HAVE_LIST="
2100     $ARCH_EXT_LIST
2101     $(add_suffix _external $ARCH_EXT_LIST)
2102     $(add_suffix _inline   $ARCH_EXT_LIST)
2103     $ARCH_FEATURES
2104     $ATOMICS_LIST
2105     $BUILTIN_LIST
2106     $COMPLEX_FUNCS
2107     $HAVE_LIST_CMDLINE
2108     $HAVE_LIST_PUB
2109     $HEADERS_LIST
2110     $INTRINSICS_LIST
2111     $MATH_FUNCS
2112     $SYSTEM_FUNCS
2113     $THREADS_LIST
2114     $TOOLCHAIN_FEATURES
2115     $TYPES_LIST
2116     atomics_native
2117     dos_paths
2118     libc_msvcrt
2119     makeinfo
2120     makeinfo_html
2121     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
2122     perl
2123     pod2man
2124     section_data_rel_ro
2125     texi2html
2126     threads
2127     uwp
2128     vaapi_drm
2129     vaapi_x11
2130     vdpau_x11
2131     winrt
2132 "
2133
2134 # options emitted with CONFIG_ prefix but not available on the command line
2135 CONFIG_EXTRA="
2136     aandcttables
2137     ac3dsp
2138     audio_frame_queue
2139     audiodsp
2140     blockdsp
2141     bswapdsp
2142     cabac
2143     cbs
2144     cbs_h264
2145     cbs_h265
2146     cbs_mpeg2
2147     dirac_parse
2148     dvprofile
2149     exif
2150     faandct
2151     faanidct
2152     fdctdsp
2153     flacdsp
2154     fmtconvert
2155     frame_thread_encoder
2156     g722dsp
2157     golomb
2158     gplv3
2159     h263dsp
2160     h264chroma
2161     h264dsp
2162     h264parse
2163     h264pred
2164     h264qpel
2165     hevcparse
2166     hpeldsp
2167     huffman
2168     huffyuvdsp
2169     huffyuvencdsp
2170     idctdsp
2171     iirfilter
2172     mdct15
2173     intrax8
2174     iso_media
2175     ividsp
2176     jpegtables
2177     lgplv3
2178     libx262
2179     llauddsp
2180     llviddsp
2181     llvidencdsp
2182     lpc
2183     lzf
2184     me_cmp
2185     mpeg_er
2186     mpegaudio
2187     mpegaudiodsp
2188     mpegaudioheader
2189     mpegvideo
2190     mpegvideoenc
2191     mss34dsp
2192     pixblockdsp
2193     qpeldsp
2194     qsv
2195     qsvdec
2196     qsvenc
2197     rangecoder
2198     riffdec
2199     riffenc
2200     rtpdec
2201     rtpenc_chain
2202     rv34dsp
2203     sinewin
2204     snappy
2205     srtp
2206     startcode
2207     texturedsp
2208     texturedspenc
2209     tpeldsp
2210     vaapi_1
2211     vaapi_encode
2212     vc1dsp
2213     videodsp
2214     vp3dsp
2215     vp56dsp
2216     vp8dsp
2217     wma_freqs
2218     wmv2dsp
2219 "
2220
2221 CMDLINE_SELECT="
2222     $ARCH_EXT_LIST
2223     $CONFIG_LIST
2224     $HAVE_LIST_CMDLINE
2225     $THREADS_LIST
2226     asm
2227     cross_compile
2228     debug
2229     extra_warnings
2230     logging
2231     lto
2232     optimizations
2233     rpath
2234     stripping
2235 "
2236
2237 PATHS_LIST="
2238     bindir
2239     datadir
2240     docdir
2241     incdir
2242     libdir
2243     mandir
2244     pkgconfigdir
2245     prefix
2246     shlibdir
2247     install_name_dir
2248 "
2249
2250 CMDLINE_SET="
2251     $PATHS_LIST
2252     ar
2253     arch
2254     as
2255     assert_level
2256     build_suffix
2257     cc
2258     objcc
2259     cpu
2260     cross_prefix
2261     custom_allocator
2262     cxx
2263     dep_cc
2264     doxygen
2265     env
2266     extra_version
2267     gas
2268     host_cc
2269     host_cflags
2270     host_extralibs
2271     host_ld
2272     host_ldflags
2273     host_os
2274     ignore_tests
2275     install
2276     ld
2277     ln_s
2278     logfile
2279     malloc_prefix
2280     nm
2281     optflags
2282     nvccflags
2283     pkg_config
2284     pkg_config_flags
2285     progs_suffix
2286     random_seed
2287     ranlib
2288     samples
2289     strip
2290     sws_max_filter_size
2291     sysinclude
2292     sysroot
2293     target_exec
2294     target_os
2295     target_path
2296     target_samples
2297     tempprefix
2298     toolchain
2299     valgrind
2300     x86asmexe
2301 "
2302
2303 CMDLINE_APPEND="
2304     extra_cflags
2305     extra_cxxflags
2306     extra_objcflags
2307     host_cppflags
2308 "
2309
2310 # code dependency declarations
2311
2312 # architecture extensions
2313
2314 armv5te_deps="arm"
2315 armv6_deps="arm"
2316 armv6t2_deps="arm"
2317 armv8_deps="aarch64"
2318 neon_deps_any="aarch64 arm"
2319 intrinsics_neon_deps="neon"
2320 vfp_deps_any="aarch64 arm"
2321 vfpv3_deps="vfp"
2322 setend_deps="arm"
2323
2324 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2325
2326 loongson2_deps="mips"
2327 loongson3_deps="mips"
2328 mipsfpu_deps="mips"
2329 mipsdsp_deps="mips"
2330 mipsdspr2_deps="mips"
2331 mips32r2_deps="mips"
2332 mips32r5_deps="mips"
2333 mips32r6_deps="mips"
2334 mips64r2_deps="mips"
2335 mips64r6_deps="mips"
2336 msa_deps="mipsfpu"
2337 mmi_deps="mips"
2338
2339 altivec_deps="ppc"
2340 dcbzl_deps="ppc"
2341 ldbrx_deps="ppc"
2342 ppc4xx_deps="ppc"
2343 vsx_deps="altivec"
2344 power8_deps="vsx"
2345
2346 cpunop_deps="i686"
2347 x86_64_select="i686"
2348 x86_64_suggest="fast_cmov"
2349
2350 amd3dnow_deps="mmx"
2351 amd3dnowext_deps="amd3dnow"
2352 i686_deps="x86"
2353 mmx_deps="x86"
2354 mmxext_deps="mmx"
2355 sse_deps="mmxext"
2356 sse2_deps="sse"
2357 sse3_deps="sse2"
2358 ssse3_deps="sse3"
2359 sse4_deps="ssse3"
2360 sse42_deps="sse4"
2361 aesni_deps="sse42"
2362 avx_deps="sse42"
2363 xop_deps="avx"
2364 fma3_deps="avx"
2365 fma4_deps="avx"
2366 avx2_deps="avx"
2367
2368 mmx_external_deps="x86asm"
2369 mmx_inline_deps="inline_asm"
2370 mmx_suggest="mmx_external mmx_inline"
2371
2372 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2373     eval dep=\$${ext}_deps
2374     eval ${ext}_external_deps='"${dep}_external"'
2375     eval ${ext}_inline_deps='"${dep}_inline"'
2376     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2377 done
2378
2379 aligned_stack_if_any="aarch64 ppc x86"
2380 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2381 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2382 fast_unaligned_if_any="aarch64 ppc x86"
2383 simd_align_16_if_any="altivec neon sse"
2384 simd_align_32_if_any="avx"
2385
2386 # system capabilities
2387 symver_if_any="symver_asm_label symver_gnu_asm"
2388 valgrind_backtrace_conflict="optimizations"
2389 valgrind_backtrace_deps="valgrind_valgrind_h"
2390
2391 # threading support
2392 atomics_gcc_if="sync_val_compare_and_swap"
2393 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2394 atomics_win32_if="MemoryBarrier"
2395 atomics_native_if_any="$ATOMICS_LIST"
2396 w32threads_deps="atomics_native"
2397 threads_if_any="$THREADS_LIST"
2398
2399 # subsystems
2400 cbs_h264_select="cbs golomb"
2401 cbs_h265_select="cbs golomb"
2402 cbs_mpeg2_select="cbs"
2403 dct_select="rdft"
2404 dirac_parse_select="golomb"
2405 error_resilience_select="me_cmp"
2406 faandct_deps="faan fdctdsp"
2407 faanidct_deps="faan idctdsp"
2408 h264dsp_select="startcode"
2409 hevcparse_select="golomb"
2410 frame_thread_encoder_deps="encoders threads"
2411 intrax8_select="blockdsp idctdsp"
2412 mdct_select="fft"
2413 mdct15_select="fft"
2414 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2415 mpeg_er_select="error_resilience"
2416 mpegaudio_select="mpegaudiodsp mpegaudioheader"
2417 mpegaudiodsp_select="dct"
2418 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2419 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
2420 vc1dsp_select="h264chroma qpeldsp startcode"
2421 rdft_select="fft"
2422
2423 # decoders / encoders
2424 aac_decoder_select="mdct15 mdct sinewin"
2425 aac_fixed_decoder_select="mdct sinewin"
2426 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2427 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2428 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2429 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2430 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2431 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2432 adpcm_g722_decoder_select="g722dsp"
2433 adpcm_g722_encoder_select="g722dsp"
2434 aic_decoder_select="golomb idctdsp"
2435 alac_encoder_select="lpc"
2436 als_decoder_select="bswapdsp"
2437 amrnb_decoder_select="lsp"
2438 amrwb_decoder_select="lsp"
2439 amv_decoder_select="sp5x_decoder exif"
2440 amv_encoder_select="aandcttables jpegtables mpegvideoenc"
2441 ape_decoder_select="bswapdsp llauddsp"
2442 apng_decoder_select="zlib"
2443 apng_encoder_select="llvidencdsp zlib"
2444 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2445 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2446 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2447 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2448 atrac1_decoder_select="mdct sinewin"
2449 atrac3_decoder_select="mdct"
2450 atrac3p_decoder_select="mdct sinewin"
2451 avrn_decoder_select="exif jpegtables"
2452 bink_decoder_select="blockdsp hpeldsp"
2453 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2454 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2455 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2456 clearvideo_decoder_select="idctdsp"
2457 cllc_decoder_select="bswapdsp"
2458 comfortnoise_encoder_select="lpc"
2459 cook_decoder_select="audiodsp mdct sinewin"
2460 cscd_decoder_select="lzo"
2461 cscd_decoder_suggest="zlib"
2462 dca_decoder_select="mdct"
2463 dds_decoder_select="texturedsp"
2464 dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
2465 dnxhd_decoder_select="blockdsp idctdsp"
2466 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2467 dolby_e_decoder_select="mdct"
2468 dvvideo_decoder_select="dvprofile idctdsp"
2469 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2470 dxa_decoder_select="zlib"
2471 dxv_decoder_select="lzf texturedsp"
2472 eac3_decoder_select="ac3_decoder"
2473 eac3_encoder_select="ac3_encoder"
2474 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2475 eatgq_decoder_select="aandcttables"
2476 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2477 exr_decoder_select="zlib"
2478 ffv1_decoder_select="rangecoder"
2479 ffv1_encoder_select="rangecoder"
2480 ffvhuff_decoder_select="huffyuv_decoder"
2481 ffvhuff_encoder_select="huffyuv_encoder"
2482 fic_decoder_select="golomb"
2483 flac_decoder_select="flacdsp"
2484 flac_encoder_select="bswapdsp flacdsp lpc"
2485 flashsv2_decoder_select="zlib"
2486 flashsv2_encoder_select="zlib"
2487 flashsv_decoder_select="zlib"
2488 flashsv_encoder_select="zlib"
2489 flv_decoder_select="h263_decoder"
2490 flv_encoder_select="h263_encoder"
2491 fourxm_decoder_select="blockdsp bswapdsp"
2492 fraps_decoder_select="bswapdsp huffman"
2493 g2m_decoder_select="blockdsp idctdsp jpegtables zlib"
2494 g729_decoder_select="audiodsp"
2495 h261_decoder_select="mpegvideo"
2496 h261_encoder_select="aandcttables mpegvideoenc"
2497 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2498 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2499 h263i_decoder_select="h263_decoder"
2500 h263p_decoder_select="h263_decoder"
2501 h263p_encoder_select="h263_encoder"
2502 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
2503 h264_decoder_suggest="error_resilience"
2504 hap_decoder_select="snappy texturedsp"
2505 hap_encoder_deps="libsnappy"
2506 hap_encoder_select="texturedspenc"
2507 hevc_decoder_select="bswapdsp cabac golomb hevcparse videodsp"
2508 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2509 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llvidencdsp"
2510 iac_decoder_select="imc_decoder"
2511 imc_decoder_select="bswapdsp fft mdct sinewin"
2512 indeo3_decoder_select="hpeldsp"
2513 indeo4_decoder_select="ividsp"
2514 indeo5_decoder_select="ividsp"
2515 interplay_video_decoder_select="hpeldsp"
2516 jpegls_decoder_select="mjpeg_decoder"
2517 jv_decoder_select="blockdsp"
2518 lagarith_decoder_select="llviddsp"
2519 ljpeg_encoder_select="aandcttables idctdsp jpegtables mpegvideoenc"
2520 magicyuv_decoder_select="llviddsp"
2521 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2522 metasound_decoder_select="lsp mdct sinewin"
2523 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2524 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2525 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2526 mjpegb_decoder_select="mjpeg_decoder"
2527 mlp_decoder_select="mlp_parser"
2528 mlp_encoder_select="lpc"
2529 motionpixels_decoder_select="bswapdsp"
2530 mp1_decoder_select="mpegaudio"
2531 mp1float_decoder_select="mpegaudio"
2532 mp2_decoder_select="mpegaudio"
2533 mp2float_decoder_select="mpegaudio"
2534 mp3_decoder_select="mpegaudio"
2535 mp3adu_decoder_select="mpegaudio"
2536 mp3adufloat_decoder_select="mpegaudio"
2537 mp3float_decoder_select="mpegaudio"
2538 mp3on4_decoder_select="mpegaudio"
2539 mp3on4float_decoder_select="mpegaudio"
2540 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2541 mpc8_decoder_select="mpegaudiodsp"
2542 mpegvideo_decoder_select="mpegvideo"
2543 mpeg1video_decoder_select="mpegvideo"
2544 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2545 mpeg2video_decoder_select="mpegvideo"
2546 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2547 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2548 mpeg4_encoder_select="h263_encoder"
2549 msa1_decoder_select="mss34dsp"
2550 mscc_decoder_select="zlib"
2551 msmpeg4v1_decoder_select="h263_decoder"
2552 msmpeg4v2_decoder_select="h263_decoder"
2553 msmpeg4v2_encoder_select="h263_encoder"
2554 msmpeg4v3_decoder_select="h263_decoder"
2555 msmpeg4v3_encoder_select="h263_encoder"
2556 mss2_decoder_select="mpegvideo qpeldsp vc1_decoder"
2557 mts2_decoder_select="mss34dsp"
2558 mxpeg_decoder_select="mjpeg_decoder"
2559 nellymoser_decoder_select="mdct sinewin"
2560 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2561 nuv_decoder_select="idctdsp lzo"
2562 on2avc_decoder_select="mdct"
2563 opus_decoder_deps="swresample"
2564 opus_decoder_select="mdct15"
2565 opus_encoder_select="audio_frame_queue mdct15"
2566 png_decoder_select="zlib"
2567 png_encoder_select="llvidencdsp zlib"
2568 prores_decoder_select="blockdsp idctdsp"
2569 prores_encoder_select="fdctdsp"
2570 qcelp_decoder_select="lsp"
2571 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2572 ra_144_decoder_select="audiodsp"
2573 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2574 ralf_decoder_select="golomb"
2575 rawvideo_decoder_select="bswapdsp"
2576 rscc_decoder_select="zlib"
2577 rtjpeg_decoder_select="me_cmp"
2578 rv10_decoder_select="h263_decoder"
2579 rv10_encoder_select="h263_encoder"
2580 rv20_decoder_select="h263_decoder"
2581 rv20_encoder_select="h263_encoder"
2582 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2583 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2584 screenpresso_decoder_select="zlib"
2585 shorten_decoder_select="bswapdsp"
2586 sipr_decoder_select="lsp"
2587 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2588 snow_encoder_select="aandcttables dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2589 sonic_decoder_select="golomb rangecoder"
2590 sonic_encoder_select="golomb rangecoder"
2591 sonic_ls_encoder_select="golomb rangecoder"
2592 sp5x_decoder_select="mjpeg_decoder"
2593 srgc_decoder_select="zlib"
2594 svq1_decoder_select="hpeldsp"
2595 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2596 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2597 svq3_decoder_suggest="zlib"
2598 tak_decoder_select="audiodsp"
2599 tdsc_decoder_select="zlib mjpeg_decoder"
2600 theora_decoder_select="vp3_decoder"
2601 thp_decoder_select="mjpeg_decoder"
2602 tiff_decoder_suggest="zlib lzma"
2603 tiff_encoder_suggest="zlib"
2604 truehd_decoder_select="mlp_parser"
2605 truehd_encoder_select="lpc"
2606 truemotion2_decoder_select="bswapdsp"
2607 truespeech_decoder_select="bswapdsp"
2608 tscc_decoder_select="zlib"
2609 twinvq_decoder_select="mdct lsp sinewin"
2610 txd_decoder_select="texturedsp"
2611 utvideo_decoder_select="bswapdsp llviddsp"
2612 utvideo_encoder_select="bswapdsp huffman llvidencdsp"
2613 vble_decoder_select="llviddsp"
2614 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 mpegvideo vc1dsp"
2615 vc1_qsv_decoder_deps="libmfx"
2616 vc1_qsv_decoder_select="qsvdec vc1_qsv_hwaccel vc1_parser"
2617 vc1image_decoder_select="vc1_decoder"
2618 vorbis_decoder_select="mdct"
2619 vorbis_encoder_select="mdct"
2620 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2621 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2622 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2623 vp6a_decoder_select="vp6_decoder"
2624 vp6f_decoder_select="vp6_decoder"
2625 vp7_decoder_select="h264pred videodsp vp8dsp"
2626 vp8_decoder_select="h264pred videodsp vp8dsp"
2627 vp9_decoder_select="videodsp vp9_parser"
2628 webp_decoder_select="vp8_decoder exif"
2629 wmalossless_decoder_select="llauddsp"
2630 wmapro_decoder_select="mdct sinewin wma_freqs"
2631 wmav1_decoder_select="mdct sinewin wma_freqs"
2632 wmav1_encoder_select="mdct sinewin wma_freqs"
2633 wmav2_decoder_select="mdct sinewin wma_freqs"
2634 wmav2_encoder_select="mdct sinewin wma_freqs"
2635 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2636 wmv1_decoder_select="h263_decoder"
2637 wmv1_encoder_select="h263_encoder"
2638 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2639 wmv2_encoder_select="h263_encoder wmv2dsp"
2640 wmv3_decoder_select="vc1_decoder"
2641 wmv3image_decoder_select="wmv3_decoder"
2642 xma1_decoder_select="wmapro_decoder"
2643 xma2_decoder_select="wmapro_decoder"
2644 zerocodec_decoder_select="zlib"
2645 zlib_decoder_select="zlib"
2646 zlib_encoder_select="zlib"
2647 zmbv_decoder_select="zlib"
2648 zmbv_encoder_select="zlib"
2649
2650 # hardware accelerators
2651 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2652 cuda_deps_any="libdl LoadLibrary"
2653 cuvid_deps="cuda"
2654 d3d11va_deps="d3d11_h dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2655 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode ole32 user32"
2656 videotoolbox_hwaccel_deps="videotoolbox pthreads"
2657 videotoolbox_hwaccel_extralibs="-framework QuartzCore"
2658 xvmc_deps="X11_extensions_XvMClib_h"
2659
2660 h263_vaapi_hwaccel_deps="vaapi"
2661 h263_vaapi_hwaccel_select="h263_decoder"
2662 h263_videotoolbox_hwaccel_deps="videotoolbox"
2663 h263_videotoolbox_hwaccel_select="h263_decoder"
2664 h264_cuvid_hwaccel_deps="cuda cuvid"
2665 h264_cuvid_hwaccel_select="h264_cuvid_decoder"
2666 h264_d3d11va_hwaccel_deps="d3d11va"
2667 h264_d3d11va_hwaccel_select="h264_decoder"
2668 h264_d3d11va2_hwaccel_deps="d3d11va"
2669 h264_d3d11va2_hwaccel_select="h264_decoder"
2670 h264_dxva2_hwaccel_deps="dxva2"
2671 h264_dxva2_hwaccel_select="h264_decoder"
2672 h264_mediacodec_hwaccel_deps="mediacodec"
2673 h264_mmal_hwaccel_deps="mmal"
2674 h264_qsv_hwaccel_deps="libmfx"
2675 h264_vaapi_hwaccel_deps="vaapi"
2676 h264_vaapi_hwaccel_select="h264_decoder"
2677 h264_vdpau_hwaccel_deps="vdpau"
2678 h264_vdpau_hwaccel_select="h264_decoder"
2679 h264_videotoolbox_hwaccel_deps="videotoolbox"
2680 h264_videotoolbox_hwaccel_select="h264_decoder"
2681 hevc_cuvid_hwaccel_deps="cuda cuvid"
2682 hevc_cuvid_hwaccel_select="hevc_cuvid_decoder"
2683 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2684 hevc_d3d11va_hwaccel_select="hevc_decoder"
2685 hevc_mediacodec_hwaccel_deps="mediacodec"
2686 hevc_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2687 hevc_d3d11va2_hwaccel_select="hevc_decoder"
2688 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2689 hevc_dxva2_hwaccel_select="hevc_decoder"
2690 hevc_qsv_hwaccel_deps="libmfx"
2691 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2692 hevc_vaapi_hwaccel_select="hevc_decoder"
2693 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2694 hevc_vdpau_hwaccel_select="hevc_decoder"
2695 hevc_videotoolbox_hwaccel_deps="videotoolbox"
2696 hevc_videotoolbox_hwaccel_select="hevc_decoder"
2697 mjpeg_cuvid_hwaccel_deps="cuda cuvid"
2698 mjpeg_cuvid_hwaccel_select="mjpeg_cuvid_decoder"
2699 mpeg_xvmc_hwaccel_deps="xvmc"
2700 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2701 mpeg1_cuvid_hwaccel_deps="cuda cuvid"
2702 mpeg1_cuvid_hwaccel_select="mpeg1_cuvid_decoder"
2703 mpeg1_vdpau_hwaccel_deps="vdpau"
2704 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2705 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2706 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2707 mpeg1_xvmc_hwaccel_deps="xvmc"
2708 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2709 mpeg2_cuvid_hwaccel_deps="cuda cuvid"
2710 mpeg2_cuvid_hwaccel_select="mpeg2_cuvid_decoder"
2711 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2712 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2713 mpeg2_d3d11va2_hwaccel_deps="d3d11va"
2714 mpeg2_d3d11va2_hwaccel_select="mpeg2video_decoder"
2715 mpeg2_dxva2_hwaccel_deps="dxva2"
2716 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2717 mpeg2_mediacodec_hwaccel_deps="mediacodec"
2718 mpeg2_mmal_hwaccel_deps="mmal"
2719 mpeg2_qsv_hwaccel_deps="libmfx"
2720 mpeg2_qsv_hwaccel_select="qsvdec_mpeg2"
2721 mpeg2_vaapi_hwaccel_deps="vaapi"
2722 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2723 mpeg2_vdpau_hwaccel_deps="vdpau"
2724 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2725 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2726 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2727 mpeg2_xvmc_hwaccel_deps="xvmc"
2728 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2729 mpeg4_cuvid_hwaccel_deps="cuda cuvid"
2730 mpeg4_cuvid_hwaccel_select="mpeg4_cuvid_decoder"
2731 mpeg4_mediacodec_hwaccel_deps="mediacodec"
2732 mpeg4_mmal_hwaccel_deps="mmal"
2733 mpeg4_vaapi_hwaccel_deps="vaapi"
2734 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2735 mpeg4_vdpau_hwaccel_deps="vdpau"
2736 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2737 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2738 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2739 vc1_cuvid_hwaccel_deps="cuda cuvid"
2740 vc1_cuvid_hwaccel_select="vc1_cuvid_decoder"
2741 vc1_d3d11va_hwaccel_deps="d3d11va"
2742 vc1_d3d11va_hwaccel_select="vc1_decoder"
2743 vc1_d3d11va2_hwaccel_deps="d3d11va"
2744 vc1_d3d11va2_hwaccel_select="vc1_decoder"
2745 vc1_dxva2_hwaccel_deps="dxva2"
2746 vc1_dxva2_hwaccel_select="vc1_decoder"
2747 vc1_mmal_hwaccel_deps="mmal"
2748 vc1_qsv_hwaccel_deps="libmfx"
2749 vc1_qsv_hwaccel_select="qsvdec_vc1"
2750 vc1_vaapi_hwaccel_deps="vaapi"
2751 vc1_vaapi_hwaccel_select="vc1_decoder"
2752 vc1_vdpau_hwaccel_deps="vdpau"
2753 vc1_vdpau_hwaccel_select="vc1_decoder"
2754 vp8_cuvid_hwaccel_deps="cuda cuvid"
2755 vp8_cuvid_hwaccel_select="vp8_cuvid_decoder"
2756 vp9_cuvid_hwaccel_deps="cuda cuvid"
2757 vp9_cuvid_hwaccel_select="vp9_cuvid_decoder"
2758 vp8_mediacodec_hwaccel_deps="mediacodec"
2759 vp8_qsv_hwaccel_deps="libmfx"
2760 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2761 vp9_d3d11va_hwaccel_select="vp9_decoder"
2762 vp9_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2763 vp9_d3d11va2_hwaccel_select="vp9_decoder"
2764 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
2765 vp9_dxva2_hwaccel_select="vp9_decoder"
2766 vp9_mediacodec_hwaccel_deps="mediacodec"
2767 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9_bit_depth"
2768 vp9_vaapi_hwaccel_select="vp9_decoder"
2769 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2770 wmv3_d3d11va2_hwaccel_select="vc1_d3d11va2_hwaccel"
2771 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2772 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2773 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2774
2775 # hardware-accelerated codecs
2776 omx_deps="libdl pthreads"
2777 omx_rpi_select="omx"
2778 qsvdec_select="qsv"
2779 qsvenc_select="qsv"
2780 vaapi_encode_deps="vaapi"
2781 v4l2_m2m_deps_any="linux_videodev2_h"
2782
2783 hwupload_cuda_filter_deps="cuda"
2784 scale_npp_filter_deps="cuda libnpp"
2785 scale_cuda_filter_deps="cuda_sdk"
2786 thumbnail_cuda_filter_deps="cuda_sdk"
2787
2788 nvenc_deps="cuda"
2789 nvenc_deps_any="libdl LoadLibrary"
2790 nvenc_encoder_deps="nvenc"
2791
2792 h263_v4l2m2m_decoder_deps="v4l2_m2m h263_v4l2_m2m"
2793 h263_v4l2m2m_encoder_deps="v4l2_m2m h263_v4l2_m2m"
2794 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2795 h264_cuvid_decoder_deps="cuda cuvid"
2796 h264_cuvid_decoder_select="h264_mp4toannexb_bsf"
2797 h264_mediacodec_decoder_deps="mediacodec"
2798 h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
2799 h264_mmal_decoder_deps="mmal"
2800 h264_nvenc_encoder_deps="nvenc"
2801 h264_omx_encoder_deps="omx"
2802 h264_qsv_decoder_deps="libmfx"
2803 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2804 h264_qsv_encoder_deps="libmfx"
2805 h264_qsv_encoder_select="qsvenc"
2806 h264_rkmpp_decoder_deps="rkmpp"
2807 h264_rkmpp_decoder_select="h264_mp4toannexb_bsf"
2808 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2809 h264_vaapi_encoder_select="cbs_h264 vaapi_encode"
2810 h264_v4l2m2m_decoder_deps="v4l2_m2m h264_v4l2_m2m"
2811 h264_v4l2m2m_encoder_deps="v4l2_m2m h264_v4l2_m2m"
2812 hevc_cuvid_decoder_deps="cuda cuvid"
2813 hevc_cuvid_decoder_select="hevc_mp4toannexb_bsf"
2814 hevc_mediacodec_decoder_deps="mediacodec"
2815 hevc_mediacodec_decoder_select="hevc_mp4toannexb_bsf hevc_parser"
2816 hevc_nvenc_encoder_deps="nvenc"
2817 hevc_qsv_decoder_deps="libmfx"
2818 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec hevc_qsv_hwaccel"
2819 hevc_qsv_encoder_deps="libmfx"
2820 hevc_qsv_encoder_select="hevcparse qsvenc"
2821 hevc_rkmpp_decoder_deps="rkmpp"
2822 hevc_rkmpp_decoder_select="hevc_mp4toannexb_bsf"
2823 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2824 hevc_vaapi_encoder_select="cbs_h265 vaapi_encode"
2825 hevc_v4l2m2m_decoder_deps="v4l2_m2m hevc_v4l2_m2m"
2826 hevc_v4l2m2m_encoder_deps="v4l2_m2m hevc_v4l2_m2m"
2827 mjpeg_cuvid_decoder_deps="cuda cuvid"
2828 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2829 mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
2830 mpeg1_cuvid_decoder_deps="cuda cuvid"
2831 mpeg1_v4l2m2m_decoder_deps="v4l2_m2m mpeg1_v4l2_m2m"
2832 mpeg2_crystalhd_decoder_select="crystalhd"
2833 mpeg2_cuvid_decoder_deps="cuda cuvid"
2834 mpeg2_mmal_decoder_deps="mmal"
2835 mpeg2_mediacodec_decoder_deps="mediacodec"
2836 mpeg2_qsv_decoder_deps="libmfx"
2837 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel"
2838 mpeg2_qsv_encoder_deps="libmfx"
2839 mpeg2_qsv_encoder_select="qsvenc"
2840 mpeg2_vaapi_encoder_deps="VAEncPictureParameterBufferMPEG2"
2841 mpeg2_vaapi_encoder_select="cbs_mpeg2 vaapi_encode"
2842 mpeg2_v4l2m2m_decoder_deps="v4l2_m2m mpeg2_v4l2_m2m"
2843 mpeg4_crystalhd_decoder_select="crystalhd"
2844 mpeg4_cuvid_decoder_deps="cuda cuvid"
2845 mpeg4_mediacodec_decoder_deps="mediacodec"
2846 mpeg4_mmal_decoder_deps="mmal"
2847 mpeg4_omx_encoder_deps="omx"
2848 mpeg4_v4l2m2m_decoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
2849 mpeg4_v4l2m2m_encoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
2850 msmpeg4_crystalhd_decoder_select="crystalhd"
2851 nvenc_h264_encoder_select="h264_nvenc_encoder"
2852 nvenc_hevc_encoder_select="hevc_nvenc_encoder"
2853 vc1_crystalhd_decoder_select="crystalhd"
2854 vc1_cuvid_decoder_deps="cuda cuvid"
2855 vc1_mmal_decoder_deps="mmal"
2856 vc1_v4l2m2m_decoder_deps="v4l2_m2m vc1_v4l2_m2m"
2857 vp8_cuvid_decoder_deps="cuda cuvid"
2858 vp8_mediacodec_decoder_deps="mediacodec"
2859 vp8_qsv_decoder_deps="libmfx"
2860 vp8_qsv_decoder_select="qsvdec vp8_qsv_hwaccel vp8_parser"
2861 vp8_rkmpp_decoder_deps="rkmpp"
2862 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
2863 vp8_vaapi_encoder_select="vaapi_encode"
2864 vp8_v4l2m2m_decoder_deps="v4l2_m2m vp8_v4l2_m2m"
2865 vp8_v4l2m2m_encoder_deps="v4l2_m2m vp8_v4l2_m2m"
2866 vp9_cuvid_decoder_deps="cuda cuvid"
2867 vp9_mediacodec_decoder_deps="mediacodec"
2868 vp9_rkmpp_decoder_deps="rkmpp"
2869 vp9_vaapi_encoder_deps="VAEncPictureParameterBufferVP9"
2870 vp9_vaapi_encoder_select="vaapi_encode"
2871 vp9_v4l2m2m_decoder_deps="v4l2_m2m vp9_v4l2_m2m"
2872 wmv3_crystalhd_decoder_select="crystalhd"
2873
2874 # parsers
2875 h264_parser_select="golomb h264dsp h264parse"
2876 hevc_parser_select="hevcparse"
2877 mpegaudio_parser_select="mpegaudioheader"
2878 mpegvideo_parser_select="mpegvideo"
2879 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
2880 vc1_parser_select="vc1dsp"
2881
2882 # bitstream_filters
2883 h264_metadata_bsf_select="cbs_h264"
2884 h264_redundant_pps_bsf_select="cbs_h264"
2885 hevc_metadata_bsf_select="cbs_h265"
2886 mjpeg2jpeg_bsf_select="jpegtables"
2887 mpeg2_metadata_bsf_select="cbs_mpeg2"
2888 trace_headers_bsf_select="cbs_h264 cbs_h265 cbs_mpeg2"
2889
2890 # external libraries
2891 aac_at_decoder_deps="audiotoolbox"
2892 ac3_at_decoder_deps="audiotoolbox"
2893 ac3_at_decoder_select="ac3_parser"
2894 adpcm_ima_qt_at_decoder_deps="audiotoolbox"
2895 alac_at_decoder_deps="audiotoolbox"
2896 amr_nb_at_decoder_deps="audiotoolbox"
2897 avisynth_deps_any="libdl LoadLibrary"
2898 avisynth_demuxer_deps="avisynth"
2899 avisynth_demuxer_select="riffdec"
2900 eac3_at_decoder_deps="audiotoolbox"
2901 eac3_at_decoder_select="ac3_parser"
2902 gsm_ms_at_decoder_deps="audiotoolbox"
2903 ilbc_at_decoder_deps="audiotoolbox"
2904 mp1_at_decoder_deps="audiotoolbox"
2905 mp2_at_decoder_deps="audiotoolbox"
2906 mp3_at_decoder_deps="audiotoolbox"
2907 mp1_at_decoder_select="mpegaudioheader"
2908 mp2_at_decoder_select="mpegaudioheader"
2909 mp3_at_decoder_select="mpegaudioheader"
2910 pcm_alaw_at_decoder_deps="audiotoolbox"
2911 pcm_mulaw_at_decoder_deps="audiotoolbox"
2912 qdmc_at_decoder_deps="audiotoolbox"
2913 qdm2_at_decoder_deps="audiotoolbox"
2914 aac_at_encoder_deps="audiotoolbox"
2915 aac_at_encoder_select="audio_frame_queue"
2916 alac_at_encoder_deps="audiotoolbox"
2917 alac_at_encoder_select="audio_frame_queue"
2918 ilbc_at_encoder_deps="audiotoolbox"
2919 ilbc_at_encoder_select="audio_frame_queue"
2920 pcm_alaw_at_encoder_deps="audiotoolbox"
2921 pcm_alaw_at_encoder_select="audio_frame_queue"
2922 pcm_mulaw_at_encoder_deps="audiotoolbox"
2923 pcm_mulaw_at_encoder_select="audio_frame_queue"
2924 chromaprint_muxer_deps="chromaprint"
2925 h264_videotoolbox_encoder_deps="pthreads"
2926 h264_videotoolbox_encoder_select="videotoolbox_encoder"
2927 libcelt_decoder_deps="libcelt"
2928 libfdk_aac_decoder_deps="libfdk_aac"
2929 libfdk_aac_encoder_deps="libfdk_aac"
2930 libfdk_aac_encoder_select="audio_frame_queue"
2931 libgme_demuxer_deps="libgme"
2932 libgsm_decoder_deps="libgsm"
2933 libgsm_encoder_deps="libgsm"
2934 libgsm_ms_decoder_deps="libgsm"
2935 libgsm_ms_encoder_deps="libgsm"
2936 libilbc_decoder_deps="libilbc"
2937 libilbc_encoder_deps="libilbc"
2938 libkvazaar_encoder_deps="libkvazaar"
2939 libmodplug_demuxer_deps="libmodplug"
2940 libmp3lame_encoder_deps="libmp3lame"
2941 libmp3lame_encoder_select="audio_frame_queue mpegaudioheader"
2942 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2943 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2944 libopencore_amrnb_encoder_select="audio_frame_queue"
2945 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2946 libopenh264_decoder_deps="libopenh264"
2947 libopenh264_decoder_select="h264_mp4toannexb_bsf"
2948 libopenh264_encoder_deps="libopenh264"
2949 libopenjpeg_decoder_deps="libopenjpeg"
2950 libopenjpeg_encoder_deps="libopenjpeg"
2951 libopenmpt_demuxer_deps="libopenmpt"
2952 libopus_decoder_deps="libopus"
2953 libopus_encoder_deps="libopus"
2954 libopus_encoder_select="audio_frame_queue"
2955 librsvg_decoder_deps="librsvg"
2956 libshine_encoder_deps="libshine"
2957 libshine_encoder_select="audio_frame_queue"
2958 libspeex_decoder_deps="libspeex"
2959 libspeex_encoder_deps="libspeex"
2960 libspeex_encoder_select="audio_frame_queue"
2961 libtheora_encoder_deps="libtheora"
2962 libtwolame_encoder_deps="libtwolame"
2963 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2964 libvorbis_decoder_deps="libvorbis"
2965 libvorbis_encoder_deps="libvorbis libvorbisenc"
2966 libvorbis_encoder_select="audio_frame_queue"
2967 libvpx_vp8_decoder_deps="libvpx"
2968 libvpx_vp8_encoder_deps="libvpx"
2969 libvpx_vp9_decoder_deps="libvpx"
2970 libvpx_vp9_encoder_deps="libvpx"
2971 libwavpack_encoder_deps="libwavpack"
2972 libwavpack_encoder_select="audio_frame_queue"
2973 libwebp_encoder_deps="libwebp"
2974 libwebp_anim_encoder_deps="libwebp"
2975 libx262_encoder_deps="libx262"
2976 libx264_encoder_deps="libx264"
2977 libx264rgb_encoder_deps="libx264 x264_csp_bgr"
2978 libx264rgb_encoder_select="libx264_encoder"
2979 libx265_encoder_deps="libx265"
2980 libxavs_encoder_deps="libxavs"
2981 libxvid_encoder_deps="libxvid"
2982 libzvbi_teletext_decoder_deps="libzvbi"
2983 videotoolbox_suggest="coreservices"
2984 videotoolbox_deps="corefoundation coremedia corevideo"
2985 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
2986
2987 # demuxers / muxers
2988 ac3_demuxer_select="ac3_parser"
2989 aiff_muxer_select="iso_media"
2990 asf_demuxer_select="riffdec"
2991 asf_o_demuxer_select="riffdec"
2992 asf_muxer_select="riffenc"
2993 asf_stream_muxer_select="asf_muxer"
2994 avi_demuxer_select="iso_media riffdec exif"
2995 avi_muxer_select="riffenc"
2996 caf_demuxer_select="iso_media riffdec"
2997 caf_muxer_select="iso_media"
2998 dash_muxer_select="mp4_muxer"
2999 dash_demuxer_deps="libxml2"
3000 dirac_demuxer_select="dirac_parser"
3001 dts_demuxer_select="dca_parser"
3002 dtshd_demuxer_select="dca_parser"
3003 dv_demuxer_select="dvprofile"
3004 dv_muxer_select="dvprofile"
3005 dxa_demuxer_select="riffdec"
3006 eac3_demuxer_select="ac3_parser"
3007 f4v_muxer_select="mov_muxer"
3008 fifo_muxer_deps="threads"
3009 flac_demuxer_select="flac_parser"
3010 hds_muxer_select="flv_muxer"
3011 hls_muxer_select="mpegts_muxer"
3012 hls_muxer_suggest="gcrypt openssl"
3013 image2_alias_pix_demuxer_select="image2_demuxer"
3014 image2_brender_pix_demuxer_select="image2_demuxer"
3015 ipod_muxer_select="mov_muxer"
3016 ismv_muxer_select="mov_muxer"
3017 matroska_audio_muxer_select="matroska_muxer"
3018 matroska_demuxer_select="iso_media riffdec"
3019 matroska_demuxer_suggest="bzlib lzo zlib"
3020 matroska_muxer_select="iso_media riffenc"
3021 mmf_muxer_select="riffenc"
3022 mov_demuxer_select="iso_media riffdec"
3023 mov_demuxer_suggest="zlib"
3024 mov_muxer_select="iso_media riffenc rtpenc_chain"
3025 mp3_demuxer_select="mpegaudio_parser"
3026 mp3_muxer_select="mpegaudioheader"
3027 mp4_muxer_select="mov_muxer"
3028 mpegts_demuxer_select="iso_media"
3029 mpegts_muxer_select="adts_muxer latm_muxer"
3030 mpegtsraw_demuxer_select="mpegts_demuxer"
3031 mxf_d10_muxer_select="mxf_muxer"
3032 mxf_opatom_muxer_select="mxf_muxer"
3033 nut_muxer_select="riffenc"
3034 nuv_demuxer_select="riffdec"
3035 oga_muxer_select="ogg_muxer"
3036 ogg_demuxer_select="dirac_parse"
3037 ogv_muxer_select="ogg_muxer"
3038 opus_muxer_select="ogg_muxer"
3039 psp_muxer_select="mov_muxer"
3040 rtp_demuxer_select="sdp_demuxer"
3041 rtp_muxer_select="golomb"
3042 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
3043 rtsp_demuxer_select="http_protocol rtpdec"
3044 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
3045 sap_demuxer_select="sdp_demuxer"
3046 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
3047 sdp_demuxer_select="rtpdec"
3048 smoothstreaming_muxer_select="ismv_muxer"
3049 spdif_muxer_select="aac_parser"
3050 spx_muxer_select="ogg_muxer"
3051 swf_demuxer_suggest="zlib"
3052 tak_demuxer_select="tak_parser"
3053 tg2_muxer_select="mov_muxer"
3054 tgp_muxer_select="mov_muxer"
3055 vobsub_demuxer_select="mpegps_demuxer"
3056 w64_demuxer_select="wav_demuxer"
3057 w64_muxer_select="wav_muxer"
3058 wav_demuxer_select="riffdec"
3059 wav_muxer_select="riffenc"
3060 webm_muxer_select="iso_media riffenc"
3061 webm_dash_manifest_demuxer_select="matroska_demuxer"
3062 wtv_demuxer_select="mpegts_demuxer riffdec"
3063 wtv_muxer_select="mpegts_muxer riffenc"
3064 xmv_demuxer_select="riffdec"
3065 xwma_demuxer_select="riffdec"
3066
3067 # indevs / outdevs
3068 alsa_indev_deps="alsa"
3069 alsa_outdev_deps="alsa"
3070 avfoundation_indev_deps="avfoundation corevideo coremedia pthreads"
3071 avfoundation_indev_suggest="coregraphics applicationservices"
3072 avfoundation_indev_extralibs="-framework Foundation"
3073 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
3074 caca_outdev_deps="libcaca"
3075 decklink_deps_any="libdl LoadLibrary"
3076 decklink_indev_deps="decklink threads"
3077 decklink_indev_extralibs="-lstdc++"
3078 decklink_outdev_deps="decklink threads"
3079 decklink_outdev_extralibs="-lstdc++"
3080 libndi_newtek_indev_deps="libndi_newtek"
3081 libndi_newtek_indev_extralibs="-lndi"
3082 libndi_newtek_outdev_deps="libndi_newtek"
3083 libndi_newtek_outdev_extralibs="-lndi"
3084 dshow_indev_deps="IBaseFilter"
3085 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
3086 fbdev_indev_deps="linux_fb_h"
3087 fbdev_outdev_deps="linux_fb_h"
3088 gdigrab_indev_deps="CreateDIBSection"
3089 gdigrab_indev_extralibs="-lgdi32"
3090 gdigrab_indev_select="bmp_decoder"
3091 iec61883_indev_deps="libiec61883"
3092 jack_indev_deps="libjack"
3093 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
3094 kmsgrab_indev_deps="libdrm"
3095 lavfi_indev_deps="avfilter"
3096 libcdio_indev_deps="libcdio"
3097 libdc1394_indev_deps="libdc1394"
3098 openal_indev_deps="openal"
3099 opengl_outdev_deps="opengl"
3100 oss_indev_deps_any="soundcard_h sys_soundcard_h"
3101 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
3102 pulse_indev_deps="libpulse"
3103 pulse_outdev_deps="libpulse"
3104 sdl2_outdev_deps="sdl2"
3105 sndio_indev_deps="sndio"
3106 sndio_outdev_deps="sndio"
3107 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
3108 v4l2_indev_suggest="libv4l2"
3109 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
3110 v4l2_outdev_suggest="libv4l2"
3111 vfwcap_indev_deps="vfw32 vfwcap_defines"
3112 xcbgrab_indev_deps="libxcb"
3113 xcbgrab_indev_suggest="libxcb_shm libxcb_shape libxcb_xfixes"
3114 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
3115 xv_outdev_extralibs="-lXv -lX11 -lXext"
3116
3117 # protocols
3118 async_protocol_deps="threads"
3119 bluray_protocol_deps="libbluray"
3120 ffrtmpcrypt_protocol_conflict="librtmp_protocol"
3121 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
3122 ffrtmpcrypt_protocol_select="tcp_protocol"
3123 ffrtmphttp_protocol_conflict="librtmp_protocol"
3124 ffrtmphttp_protocol_select="http_protocol"
3125 ftp_protocol_select="tcp_protocol"
3126 gopher_protocol_select="network"
3127 http_protocol_select="tcp_protocol"
3128 http_protocol_suggest="zlib"
3129 httpproxy_protocol_select="tcp_protocol"
3130 httpproxy_protocol_suggest="zlib"
3131 https_protocol_select="tls_protocol"
3132 https_protocol_suggest="zlib"
3133 icecast_protocol_select="http_protocol"
3134 librtmp_protocol_deps="librtmp"
3135 librtmpe_protocol_deps="librtmp"
3136 librtmps_protocol_deps="librtmp"
3137 librtmpt_protocol_deps="librtmp"
3138 librtmpte_protocol_deps="librtmp"
3139 libsmbclient_protocol_deps="libsmbclient gplv3"
3140 libssh_protocol_deps="libssh"
3141 mmsh_protocol_select="http_protocol"
3142 mmst_protocol_select="network"
3143 rtmp_protocol_conflict="librtmp_protocol"
3144 rtmp_protocol_select="tcp_protocol"
3145 rtmp_protocol_suggest="zlib"
3146 rtmpe_protocol_select="ffrtmpcrypt_protocol"
3147 rtmpe_protocol_suggest="zlib"
3148 rtmps_protocol_conflict="librtmp_protocol"
3149 rtmps_protocol_select="tls_protocol"
3150 rtmps_protocol_suggest="zlib"
3151 rtmpt_protocol_select="ffrtmphttp_protocol"
3152 rtmpt_protocol_suggest="zlib"
3153 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
3154 rtmpte_protocol_suggest="zlib"
3155 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
3156 rtmpts_protocol_suggest="zlib"
3157 rtp_protocol_select="udp_protocol"
3158 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
3159 sctp_protocol_select="network"
3160 srtp_protocol_select="rtp_protocol srtp"
3161 tcp_protocol_select="network"
3162 tls_gnutls_protocol_conflict="tls_schannel_protocol tls_securetransport_protocol"
3163 tls_gnutls_protocol_deps="gnutls"
3164 tls_gnutls_protocol_select="tcp_protocol"
3165 tls_openssl_protocol_conflict="tls_schannel_protocol tls_securetransport_protocol tls_gnutls_protocol"
3166 tls_openssl_protocol_deps="openssl"
3167 tls_openssl_protocol_select="tcp_protocol"
3168 tls_schannel_protocol_deps="schannel"
3169 tls_schannel_protocol_select="tcp_protocol"
3170 tls_securetransport_protocol_deps="securetransport"
3171 tls_securetransport_protocol_select="tcp_protocol"
3172 tls_protocol_deps_any="tls_schannel_protocol tls_securetransport_protocol tls_gnutls_protocol tls_openssl_protocol"
3173 udp_protocol_select="network"
3174 udplite_protocol_select="network"
3175 unix_protocol_deps="sys_un_h"
3176 unix_protocol_select="network"
3177
3178 # filters
3179 afftfilt_filter_deps="avcodec"
3180 afftfilt_filter_select="fft"
3181 afir_filter_deps="avcodec"
3182 afir_filter_select="fft"
3183 amovie_filter_deps="avcodec avformat"
3184 aresample_filter_deps="swresample"
3185 ass_filter_deps="libass"
3186 atempo_filter_deps="avcodec"
3187 atempo_filter_select="rdft"
3188 azmq_filter_deps="libzmq"
3189 blackframe_filter_deps="gpl"
3190 boxblur_filter_deps="gpl"
3191 bs2b_filter_deps="libbs2b"
3192 colormatrix_filter_deps="gpl"
3193 coreimage_filter_deps="coreimage appkit"
3194 coreimage_filter_extralibs="-framework OpenGL"
3195 coreimagesrc_filter_deps="coreimage appkit"
3196 coreimagesrc_filter_extralibs="-framework OpenGL"
3197 cover_rect_filter_deps="avcodec avformat gpl"
3198 cropdetect_filter_deps="gpl"
3199 deinterlace_qsv_filter_deps="libmfx"
3200 deinterlace_vaapi_filter_deps="vaapi"
3201 delogo_filter_deps="gpl"
3202 deshake_filter_select="pixelutils"
3203 deshake_filter_suggest="opencl"
3204 drawtext_filter_deps="libfreetype"
3205 drawtext_filter_suggest="libfontconfig libfribidi"
3206 elbg_filter_deps="avcodec"
3207 eq_filter_deps="gpl"
3208 fftfilt_filter_deps="avcodec"
3209 fftfilt_filter_select="rdft"
3210 find_rect_filter_deps="avcodec avformat gpl"
3211 firequalizer_filter_deps="avcodec"
3212 firequalizer_filter_select="rdft"
3213 flite_filter_deps="libflite"
3214 framerate_filter_select="pixelutils"
3215 frei0r_filter_deps="frei0r libdl"
3216 frei0r_src_filter_deps="frei0r libdl"
3217 fspp_filter_deps="gpl"
3218 geq_filter_deps="gpl"
3219 histeq_filter_deps="gpl"
3220 hqdn3d_filter_deps="gpl"
3221 interlace_filter_deps="gpl"
3222 kerndeint_filter_deps="gpl"
3223 ladspa_filter_deps="ladspa libdl"
3224 mcdeint_filter_deps="avcodec gpl"
3225 movie_filter_deps="avcodec avformat"
3226 mpdecimate_filter_deps="gpl"
3227 mpdecimate_filter_select="pixelutils"
3228 mptestsrc_filter_deps="gpl"
3229 negate_filter_deps="lut_filter"
3230 nnedi_filter_deps="gpl"
3231 ocr_filter_deps="libtesseract"
3232 ocv_filter_deps="libopencv"
3233 owdenoise_filter_deps="gpl"
3234 pan_filter_deps="swresample"
3235 perspective_filter_deps="gpl"
3236 phase_filter_deps="gpl"
3237 pp7_filter_deps="gpl"
3238 pp_filter_deps="gpl postproc"
3239 pullup_filter_deps="gpl"
3240 removelogo_filter_deps="avcodec avformat swscale"
3241 repeatfields_filter_deps="gpl"
3242 resample_filter_deps="avresample"
3243 rubberband_filter_deps="librubberband"
3244 sab_filter_deps="gpl swscale"
3245 scale2ref_filter_deps="swscale"
3246 scale_filter_deps="swscale"
3247 scale_qsv_filter_deps="libmfx"
3248 select_filter_select="pixelutils"
3249 showcqt_filter_deps="avcodec avformat swscale"
3250 showcqt_filter_suggest="libfontconfig libfreetype"
3251 showcqt_filter_select="fft"
3252 showfreqs_filter_deps="avcodec"
3253 showfreqs_filter_select="fft"
3254 showspectrum_filter_deps="avcodec"
3255 showspectrum_filter_select="fft"
3256 showspectrumpic_filter_deps="avcodec"
3257 showspectrumpic_filter_select="fft"
3258 signature_filter_deps="gpl avcodec avformat"
3259 smartblur_filter_deps="gpl swscale"
3260 sofalizer_filter_deps="libmysofa avcodec"
3261 sofalizer_filter_select="fft"
3262 spectrumsynth_filter_deps="avcodec"
3263 spectrumsynth_filter_select="fft"
3264 spp_filter_deps="gpl avcodec"
3265 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3266 stereo3d_filter_deps="gpl"
3267 subtitles_filter_deps="avformat avcodec libass"
3268 super2xsai_filter_deps="gpl"
3269 pixfmts_super2xsai_test_deps="super2xsai_filter"
3270 tinterlace_filter_deps="gpl"
3271 tinterlace_merge_test_deps="tinterlace_filter"
3272 tinterlace_pad_test_deps="tinterlace_filter"
3273 tonemap_filter_deps="const_nan"
3274 uspp_filter_deps="gpl avcodec"
3275 unsharp_filter_suggest="opencl"
3276 vaguedenoiser_filter_deps="gpl"
3277 vidstabdetect_filter_deps="libvidstab"
3278 vidstabtransform_filter_deps="libvidstab"
3279 libvmaf_filter_deps="libvmaf"
3280 zmq_filter_deps="libzmq"
3281 zoompan_filter_deps="swscale"
3282 zscale_filter_deps="libzimg const_nan"
3283 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3284
3285 # examples
3286 avio_dir_cmd_deps="avformat avutil"
3287 avio_reading_deps="avformat avcodec avutil"
3288 decode_audio_example_deps="avcodec avutil"
3289 decode_video_example_deps="avcodec avutil"
3290 demuxing_decoding_example_deps="avcodec avformat avutil"
3291 encode_audio_example_deps="avcodec avutil"
3292 encode_video_example_deps="avcodec avutil"
3293 extract_mvs_example_deps="avcodec avformat avutil"
3294 filter_audio_example_deps="avfilter avutil"
3295 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3296 filtering_video_example_deps="avfilter avcodec avformat avutil"
3297 http_multiclient_example_deps="avformat avutil fork"
3298 hw_decode_example_deps="avcodec avformat avutil"
3299 metadata_example_deps="avformat avutil"
3300 muxing_example_deps="avcodec avformat avutil swscale"
3301 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
3302 remuxing_example_deps="avcodec avformat avutil"
3303 resampling_audio_example_deps="avutil swresample"
3304 scaling_video_example_deps="avutil swscale"
3305 transcode_aac_example_deps="avcodec avformat swresample"
3306 transcoding_example_deps="avfilter avcodec avformat avutil"
3307
3308 # EXTRALIBS_LIST
3309 cpu_init_extralibs="pthreads_extralibs"
3310 cws2fws_extralibs="zlib_extralibs"
3311
3312 # libraries, in linking order
3313 avcodec_deps="avutil"
3314 avcodec_suggest="libm"
3315 avcodec_select="null_bsf"
3316 avdevice_deps="avformat avcodec avutil"
3317 avdevice_suggest="libm"
3318 avfilter_deps="avutil"
3319 avfilter_suggest="libm"
3320 avformat_deps="avcodec avutil"
3321 avformat_suggest="libm network zlib"
3322 avresample_deps="avutil"
3323 avresample_suggest="libm"
3324 avutil_suggest="clock_gettime libm libdrm libmfx opencl user32 vaapi videotoolbox corefoundation corevideo coremedia wincrypt"
3325 postproc_deps="avutil gpl"
3326 postproc_suggest="libm"
3327 swresample_deps="avutil"
3328 swresample_suggest="libm libsoxr"
3329 swscale_deps="avutil"
3330 swscale_suggest="libm"
3331
3332 avcodec_extralibs="pthreads_extralibs iconv_extralibs"
3333 avfilter_extralibs="pthreads_extralibs"
3334 avutil_extralibs="nanosleep_extralibs pthreads_extralibs vaapi_drm_extralibs vaapi_x11_extralibs vdpau_x11_extralibs"
3335
3336 # programs
3337 ffmpeg_deps="avcodec avfilter avformat swresample"
3338 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3339                null_filter
3340                trim_filter"
3341 ffmpeg_suggest="ole32 psapi shell32"
3342 ffplay_deps="avcodec avformat swscale swresample sdl2"
3343 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3344 ffplay_suggest="shell32"
3345 ffprobe_deps="avcodec avformat"
3346 ffprobe_suggest="shell32"
3347 ffserver_deps="avformat fork sarestart"
3348 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
3349
3350 # documentation
3351 podpages_deps="perl"
3352 manpages_deps="perl pod2man"
3353 htmlpages_deps="perl"
3354 htmlpages_deps_any="makeinfo_html texi2html"
3355 txtpages_deps="perl makeinfo"
3356 doc_deps_any="manpages htmlpages podpages txtpages"
3357
3358 # default parameters
3359
3360 logfile="ffbuild/config.log"
3361
3362 # installation paths
3363 prefix_default="/usr/local"
3364 bindir_default='${prefix}/bin'
3365 datadir_default='${prefix}/share/ffmpeg'
3366 docdir_default='${prefix}/share/doc/ffmpeg'
3367 incdir_default='${prefix}/include'
3368 libdir_default='${prefix}/lib'
3369 mandir_default='${prefix}/share/man'
3370
3371 # toolchain
3372 ar_default="ar"
3373 cc_default="gcc"
3374 cxx_default="g++"
3375 host_cc_default="gcc"
3376 doxygen_default="doxygen"
3377 install="install"
3378 ln_s_default="ln -s -f"
3379 nm_default="nm -g"
3380 pkg_config_default=pkg-config
3381 ranlib_default="ranlib"
3382 strip_default="strip"
3383 version_script='--version-script'
3384 x86asmexe_default="nasm"
3385 windres_default="windres"
3386 nvcc_default="nvcc"
3387 nvccflags_default="-gencode arch=compute_30,code=sm_30 -O2"
3388 striptype="direct"
3389
3390 # OS
3391 target_os_default=$(tolower $(uname -s))
3392 host_os=$target_os_default
3393
3394 # machine
3395 if test "$target_os_default" = aix; then
3396     arch_default=$(uname -p)
3397     strip_default="strip -X32_64"
3398 else
3399     arch_default=$(uname -m)
3400 fi
3401 cpu="generic"
3402 intrinsics="none"
3403
3404 # configurable options
3405 enable $PROGRAM_LIST
3406 enable $DOCUMENT_LIST
3407 enable $EXAMPLE_LIST
3408 enable $(filter_out avresample $LIBRARY_LIST)
3409 enable stripping
3410
3411 enable asm
3412 enable debug
3413 enable doc
3414 enable faan faandct faanidct
3415 enable optimizations
3416 enable runtime_cpudetect
3417 enable safe_bitstream_reader
3418 enable static
3419 enable swscale_alpha
3420 enable valgrind_backtrace
3421
3422 sws_max_filter_size_default=256
3423 set_default sws_max_filter_size
3424
3425 # internal components are enabled by default
3426 enable $EXTRALIBS_LIST
3427
3428 # Avoid external, non-system, libraries getting enabled by dependency resolution
3429 disable $EXTERNAL_LIBRARY_LIST $HWACCEL_LIBRARY_LIST
3430
3431 # build settings
3432 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3433 LIBPREF="lib"
3434 LIBSUF=".a"
3435 FULLNAME='$(NAME)$(BUILDSUF)'
3436 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3437 SLIBPREF="lib"
3438 SLIBSUF=".so"
3439 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3440 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3441 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3442 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3443 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3444 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3445 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
3446
3447 asflags_filter=echo
3448 cflags_filter=echo
3449 ldflags_filter=echo
3450
3451 AS_C='-c'
3452 AS_O='-o $@'
3453 CC_C='-c'
3454 CC_E='-E -o $@'
3455 CC_O='-o $@'
3456 CXX_C='-c'
3457 CXX_O='-o $@'
3458 OBJCC_C='-c'
3459 OBJCC_E='-E -o $@'
3460 OBJCC_O='-o $@'
3461 X86ASM_O='-o $@'
3462 LD_O='-o $@'
3463 LD_LIB='-l%'
3464 LD_PATH='-L'
3465 HOSTCC_C='-c'
3466 HOSTCC_E='-E -o $@'
3467 HOSTCC_O='-o $@'
3468 HOSTLD_O='-o $@'
3469 NVCC_C='-c'
3470 NVCC_O='-o $@'
3471
3472 host_extralibs='-lm'
3473 host_cflags_filter=echo
3474 host_ldflags_filter=echo
3475
3476 target_path='$(CURDIR)'
3477
3478 # since the object filename is not given with the -MM flag, the compiler
3479 # is only able to print the basename, and we must add the path ourselves
3480 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3481 DEPFLAGS='-MM'
3482
3483 mkdir -p ffbuild
3484
3485 # find source path
3486 if test -f configure; then
3487     source_path=.
3488 else
3489     source_path=$(cd $(dirname "$0"); pwd)
3490     case "$source_path" in
3491         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3492     esac
3493     test -e "$source_path/config.h" &&
3494         die "Out of tree builds are impossible with config.h in source dir."
3495 fi
3496
3497 for v in "$@"; do
3498     r=${v#*=}
3499     l=${v%"$r"}
3500     r=$(sh_quote "$r")
3501     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3502 done
3503
3504 find_things(){
3505     thing=$1
3506     pattern=$2
3507     file=$source_path/$3
3508     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
3509 }
3510
3511 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
3512 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
3513 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
3514 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
3515 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
3516 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
3517 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
3518 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
3519 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
3520
3521 find_things_extern(){
3522     thing=$1
3523     pattern=$2
3524     file=$source_path/$3
3525     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
3526 }
3527
3528 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3529 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3530
3531 AVCODEC_COMPONENTS_LIST="
3532     $BSF_LIST
3533     $DECODER_LIST
3534     $ENCODER_LIST
3535     $HWACCEL_LIST
3536     $PARSER_LIST
3537 "
3538
3539 AVDEVICE_COMPONENTS_LIST="
3540     $INDEV_LIST
3541     $OUTDEV_LIST
3542 "
3543
3544 AVFILTER_COMPONENTS_LIST="
3545     $FILTER_LIST
3546 "
3547
3548 AVFORMAT_COMPONENTS_LIST="
3549     $DEMUXER_LIST
3550     $MUXER_LIST
3551     $PROTOCOL_LIST
3552 "
3553
3554 ALL_COMPONENTS="
3555     $AVCODEC_COMPONENTS_LIST
3556     $AVDEVICE_COMPONENTS_LIST
3557     $AVFILTER_COMPONENTS_LIST
3558     $AVFORMAT_COMPONENTS_LIST
3559 "
3560
3561 for n in $COMPONENT_LIST; do
3562     v=$(toupper ${n%s})_LIST
3563     eval enable \$$v
3564     eval ${n}_if_any="\$$v"
3565 done
3566
3567 enable $ARCH_EXT_LIST
3568
3569 die_unknown(){
3570     echo "Unknown option \"$1\"."
3571     echo "See $0 --help for available options."
3572     exit 1
3573 }
3574
3575 print_in_columns() {
3576     cols=$(expr $ncols / 24)
3577     cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
3578 }
3579
3580 show_list() {
3581     suffix=_$1
3582     shift
3583     echo $* | sed s/$suffix//g | print_in_columns
3584     exit 0
3585 }
3586
3587 rand_list(){
3588     IFS=', '
3589     set -- $*
3590     unset IFS
3591     for thing; do
3592         comp=${thing%:*}
3593         prob=${thing#$comp}
3594         prob=${prob#:}
3595         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3596         echo "prob ${prob:-0.5}"
3597         printf '%s\n' $comp
3598     done
3599 }
3600
3601 do_random(){
3602     action=$1
3603     shift
3604     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3605     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3606 }
3607
3608 for opt do
3609     optval="${opt#*=}"
3610     case "$opt" in
3611         --extra-ldflags=*)
3612             add_ldflags $optval
3613         ;;
3614         --extra-ldexeflags=*)
3615             add_ldexeflags $optval
3616         ;;
3617         --extra-ldlibflags=*)
3618             add_ldlibflags $optval
3619         ;;
3620         --extra-libs=*)
3621             add_extralibs $optval
3622         ;;
3623         --disable-devices)
3624             disable $INDEV_LIST $OUTDEV_LIST
3625         ;;
3626         --enable-debug=*)
3627             debuglevel="$optval"
3628         ;;
3629         --disable-programs)
3630             disable $PROGRAM_LIST
3631         ;;
3632         --disable-everything)
3633             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3634         ;;
3635         --disable-all)
3636             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3637             disable $LIBRARY_LIST $PROGRAM_LIST doc
3638             enable avutil
3639         ;;
3640         --enable-random|--disable-random)
3641             action=${opt%%-random}
3642             do_random ${action#--} $COMPONENT_LIST
3643         ;;
3644         --enable-random=*|--disable-random=*)
3645             action=${opt%%-random=*}
3646             do_random ${action#--} $optval
3647         ;;
3648         --enable-sdl)
3649             enable sdl2
3650         ;;
3651         --enable-*=*|--disable-*=*)
3652             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3653             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3654             eval list=\$$(toupper $thing)_LIST
3655             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3656             list=$(filter "$name" $list)
3657             [ "$list" = "" ] && warn "Option $opt did not match anything"
3658             $action $list
3659         ;;
3660         --enable-yasm|--disable-yasm)
3661             warn "The ${opt} option is only provided for compatibility and will be\n"\
3662                  "removed in the future. Use --enable-x86asm / --disable-x86asm instead."
3663             test $opt = --enable-yasm && x86asm=yes || x86asm=no
3664         ;;
3665         --yasmexe=*)
3666             warn "The --yasmexe option is only provided for compatibility and will be\n"\
3667                  "removed in the future. Use --x86asmexe instead."
3668             x86asmexe="$optval"
3669         ;;
3670         --enable-?*|--disable-?*)
3671             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3672             if is_in $option $COMPONENT_LIST; then
3673                 test $action = disable && action=unset
3674                 eval $action \$$(toupper ${option%s})_LIST
3675             elif is_in $option $CMDLINE_SELECT; then
3676                 $action $option
3677             else
3678                 die_unknown $opt
3679             fi
3680         ;;
3681         --list-*)
3682             NAME="${opt#--list-}"
3683             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3684             NAME=${NAME%s}
3685             eval show_list $NAME \$$(toupper $NAME)_LIST
3686         ;;
3687         --help|-h) show_help
3688         ;;
3689         --quiet|-q) quiet=yes
3690         ;;
3691         --fatal-warnings) enable fatal_warnings
3692         ;;
3693         --libfuzzer=*)
3694             libfuzzer_path="$optval"
3695         ;;
3696         *)
3697             optname="${opt%%=*}"
3698             optname="${optname#--}"
3699             optname=$(echo "$optname" | sed 's/-/_/g')
3700             if is_in $optname $CMDLINE_SET; then
3701                 eval $optname='$optval'
3702             elif is_in $optname $CMDLINE_APPEND; then
3703                 append $optname "$optval"
3704             else
3705                 die_unknown $opt
3706             fi
3707         ;;
3708     esac
3709 done
3710
3711 for e in $env; do
3712     eval "export $e"
3713 done
3714
3715 if disabled autodetect; then
3716
3717     # Unless iconv is explicitely disabled by the user, we still want to probe
3718     # for the iconv from the libc.
3719     disabled iconv || enable libc_iconv
3720
3721     disable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3722     disable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3723 fi
3724 # Mark specifically enabled, but normally autodetected libraries as requested.
3725 for lib in $AUTODETECT_LIBS; do
3726     enabled $lib && request $lib
3727 done
3728 #TODO: switch to $AUTODETECT_LIBS when $THREADS_LIST is supported the same way
3729 enable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3730 enable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3731
3732 disabled logging && logfile=/dev/null
3733
3734 die_license_disabled() {
3735     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
3736 }
3737
3738 die_license_disabled_gpl() {
3739     enabled $1 || { enabled $v && die "$v is incompatible with the gpl and --enable-$1 is not specified."; }
3740 }
3741
3742 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3743 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3744
3745 enabled gpl && map "die_license_disabled_gpl nonfree" $EXTERNAL_LIBRARY_NONFREE_LIST
3746 map "die_license_disabled nonfree" $HWACCEL_LIBRARY_NONFREE_LIST
3747
3748 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3749
3750 # Disable all the library-specific components if the library itself
3751 # is disabled, see AVCODEC_LIST and following _LIST variables.
3752
3753 disable_components(){
3754     disabled ${1} && disable $(
3755         eval components="\$$(toupper ${1})_COMPONENTS"
3756         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
3757     )
3758 }
3759
3760 map 'disable_components $v' $LIBRARY_LIST
3761
3762 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
3763 set >> $logfile
3764
3765 test -n "$valgrind" && toolchain="valgrind-memcheck"
3766
3767 enabled ossfuzz && {
3768     add_cflags  -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp -fno-omit-frame-pointer
3769     add_ldflags -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp
3770 }
3771
3772 case "$toolchain" in
3773     *-asan)
3774         cc_default="${toolchain%-asan}"
3775         add_cflags  -fsanitize=address
3776         add_ldflags -fsanitize=address
3777     ;;
3778     *-msan)
3779         cc_default="${toolchain%-msan}"
3780         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
3781         add_ldflags -fsanitize=memory
3782     ;;
3783     *-tsan)
3784         cc_default="${toolchain%-tsan}"
3785         add_cflags  -fsanitize=thread -fPIE
3786         add_ldflags -fsanitize=thread -pie
3787         case "$toolchain" in
3788             gcc-tsan)
3789                 add_cflags  -fPIC
3790                 add_ldflags -fPIC
3791                 ;;
3792         esac
3793     ;;
3794     *-usan)
3795         cc_default="${toolchain%-usan}"
3796         add_cflags  -fsanitize=undefined
3797         add_ldflags -fsanitize=undefined
3798     ;;
3799     valgrind-*)
3800         target_exec_default="valgrind"
3801         case "$toolchain" in
3802             valgrind-massif)
3803                 target_exec_args="--tool=massif --alloc-fn=av_malloc --alloc-fn=av_mallocz --alloc-fn=av_calloc --alloc-fn=av_fast_padded_malloc --alloc-fn=av_fast_malloc --alloc-fn=av_realloc_f --alloc-fn=av_fast_realloc --alloc-fn=av_realloc"
3804                 ;;
3805             valgrind-memcheck)
3806                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3807                 ;;
3808         esac
3809     ;;
3810     msvc)
3811         # Check whether the current MSVC version needs the C99 converter.
3812         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3813         # support enough of C99 to build ffmpeg. Default to the new
3814         # behaviour if the regexp was unable to match anything, since this
3815         # successfully parses the version number of existing supported
3816         # versions that require the converter (MSVC 2010 and 2012).
3817         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3818         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3819             cc_default="cl"
3820             cxx_default="cl"
3821         else
3822             cc_default="c99wrap cl"
3823             cxx_default="c99wrap cl"
3824         fi
3825         ld_default="$source_path/compat/windows/mslink"
3826         nm_default="dumpbin -symbols"
3827         ar_default="lib"
3828         case "$arch" in
3829         arm*)
3830             as_default="armasm"
3831             ;;
3832         esac
3833         target_os_default="win32"
3834         # Use a relative path for TMPDIR. This makes sure all the
3835         # ffconf temp files are written with a relative path, avoiding
3836         # issues with msys/win32 path conversion for MSVC parameters
3837         # such as -Fo<file> or -out:<file>.
3838         TMPDIR=.
3839     ;;
3840     icl)
3841         cc_default="icl"
3842         ld_default="xilink"
3843         nm_default="dumpbin -symbols"
3844         ar_default="xilib"
3845         target_os_default="win32"
3846         TMPDIR=.
3847     ;;
3848     gcov)
3849         add_cflags  -fprofile-arcs -ftest-coverage
3850         add_ldflags -fprofile-arcs -ftest-coverage
3851     ;;
3852     llvm-cov)
3853         add_cflags -fprofile-arcs -ftest-coverage
3854         add_ldflags --coverage
3855     ;;
3856     hardened)
3857         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3858         add_cflags   -fno-strict-overflow -fstack-protector-all
3859         add_ldflags  -Wl,-z,relro -Wl,-z,now
3860         add_cflags   -fPIE
3861         add_ldexeflags -fPIE -pie
3862     ;;
3863     ?*)
3864         die "Unknown toolchain $toolchain"
3865     ;;
3866 esac
3867
3868 test -n "$cross_prefix" && enable cross_compile
3869
3870 if enabled cross_compile; then
3871     test -n "$arch" && test -n "$target_os" ||
3872         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
3873 fi
3874
3875 ar_default="${cross_prefix}${ar_default}"
3876 cc_default="${cross_prefix}${cc_default}"
3877 cxx_default="${cross_prefix}${cxx_default}"
3878 nm_default="${cross_prefix}${nm_default}"
3879 pkg_config_default="${cross_prefix}${pkg_config_default}"
3880 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
3881     ranlib_default="${cross_prefix}${ranlib_default} -D"
3882 else
3883     ranlib_default="${cross_prefix}${ranlib_default}"
3884 fi
3885 strip_default="${cross_prefix}${strip_default}"
3886 windres_default="${cross_prefix}${windres_default}"
3887
3888 sysinclude_default="${sysroot}/usr/include"
3889
3890 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3891     target_exec target_os x86asmexe nvcc
3892 enabled cross_compile || host_cc_default=$cc
3893 set_default host_cc
3894
3895 pkg_config_fail_message=""
3896 if ! $pkg_config --version >/dev/null 2>&1; then
3897     warn "$pkg_config not found, library detection may fail."
3898     pkg_config=false
3899 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
3900     pkg_config_fail_message="
3901 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
3902 fi
3903
3904 if test $doxygen != $doxygen_default && \
3905   ! $doxygen --version >/dev/null 2>&1; then
3906     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3907 fi
3908
3909 exesuf() {
3910     case $1 in
3911         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3912     esac
3913 }
3914
3915 EXESUF=$(exesuf $target_os)
3916 HOSTEXESUF=$(exesuf $host_os)
3917
3918 # set temporary file name
3919 : ${TMPDIR:=$TEMPDIR}
3920 : ${TMPDIR:=$TMP}
3921 : ${TMPDIR:=/tmp}
3922
3923 if [ -n "$tempprefix" ] ; then
3924     mktemp(){
3925         tmpname="$tempprefix.${HOSTNAME}.${UID}"
3926         echo "$tmpname"
3927         mkdir "$tmpname"
3928     }
3929 elif ! check_cmd mktemp -u XXXXXX; then
3930     # simple replacement for missing mktemp
3931     # NOT SAFE FOR GENERAL USE
3932     mktemp(){
3933         tmpname="${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3934         echo "$tmpname"
3935         mkdir "$tmpname"
3936     }
3937 fi
3938
3939 FFTMPDIR=$(mktemp -d "${TMPDIR}/ffconf.XXXXXXXX" 2> /dev/null) ||
3940     die "Unable to create temporary directory in $TMPDIR."
3941
3942 tmpfile(){
3943     tmp="${FFTMPDIR}/test"$2
3944     (set -C; exec > $tmp) 2> /dev/null ||
3945         die "Unable to create temporary file in $FFTMPDIR."
3946     eval $1=$tmp
3947 }
3948
3949 trap 'rm -rf -- "$FFTMPDIR"' EXIT
3950 trap 'exit 2' INT
3951
3952 tmpfile TMPASM .asm
3953 tmpfile TMPC   .c
3954 tmpfile TMPCPP .cpp
3955 tmpfile TMPE   $EXESUF
3956 tmpfile TMPH   .h
3957 tmpfile TMPM   .m
3958 tmpfile TMPO   .o
3959 tmpfile TMPS   .S
3960 tmpfile TMPSH  .sh
3961 tmpfile TMPV   .ver
3962
3963 unset -f mktemp
3964
3965 chmod +x $TMPE
3966
3967 # make sure we can execute files in $TMPDIR
3968 cat > $TMPSH 2>> $logfile <<EOF
3969 #! /bin/sh
3970 EOF
3971 chmod +x $TMPSH >> $logfile 2>&1
3972 if ! $TMPSH >> $logfile 2>&1; then
3973     cat <<EOF
3974 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3975 variable to another directory and make sure that it is not mounted noexec.
3976 EOF
3977     die "Sanity test failed."
3978 fi
3979
3980 armasm_flags(){
3981     for flag; do
3982         case $flag in
3983             # Filter out MSVC cl.exe options from cflags that shouldn't
3984             # be passed to gas-preprocessor
3985             -M[TD]*)                                            ;;
3986             *)                  echo $flag                      ;;
3987         esac
3988    done
3989 }
3990
3991 ccc_flags(){
3992     for flag; do
3993         case $flag in
3994             -std=c99)           echo -c99                       ;;
3995             -mcpu=*)            echo -arch ${flag#*=}           ;;
3996             -mieee)             echo -ieee                      ;;
3997             -O*|-fast)          echo $flag                      ;;
3998             -fno-math-errno)    echo -assume nomath_errno       ;;
3999             -g)                 echo -g3                        ;;
4000             -Wall)              echo -msg_enable level2         ;;
4001             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
4002             -Wl,*)              echo $flag                      ;;
4003             -f*|-W*)                                            ;;
4004             *)                  echo $flag                      ;;
4005         esac
4006    done
4007 }
4008
4009 cparser_flags(){
4010     for flag; do
4011         case $flag in
4012             -Wno-switch)             echo -Wno-switch-enum ;;
4013             -Wno-format-zero-length) ;;
4014             -Wdisabled-optimization) ;;
4015             -Wno-pointer-sign)       echo -Wno-other ;;
4016             *)                       echo $flag ;;
4017         esac
4018     done
4019 }
4020
4021 msvc_common_flags(){
4022     for flag; do
4023         case $flag in
4024             # In addition to specifying certain flags under the compiler
4025             # specific filters, they must be specified here as well or else the
4026             # generic catch all at the bottom will print the original flag.
4027             -Wall)                ;;
4028             -Wextra)              ;;
4029             -std=c99)             ;;
4030             # Common flags
4031             -fomit-frame-pointer) ;;
4032             -g)                   echo -Z7 ;;
4033             -fno-math-errno)      ;;
4034             -fno-common)          ;;
4035             -fno-signed-zeros)    ;;
4036             -fPIC)                ;;
4037             -mthumb)              ;;
4038             -march=*)             ;;
4039             -lz)                  echo zlib.lib ;;
4040             -lx264)               echo libx264.lib ;;
4041             -lstdc++)             ;;
4042             -l*)                  echo ${flag#-l}.lib ;;
4043             -LARGEADDRESSAWARE)   echo $flag ;;
4044             -L*)                  echo -libpath:${flag#-L} ;;
4045             *)                    echo $flag ;;
4046         esac
4047     done
4048 }
4049
4050 msvc_flags(){
4051     msvc_common_flags "$@"
4052     for flag; do
4053         case $flag in
4054             -Wall)                echo -W3 -wd4018 -wd4146 -wd4244 -wd4305     \
4055                                        -wd4554 ;;
4056             -Wextra)              echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
4057                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
4058                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
4059                                        -wd4307 \
4060                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
4061         esac
4062     done
4063 }
4064
4065 icl_flags(){
4066     msvc_common_flags "$@"
4067     for flag; do
4068         case $flag in
4069             # Despite what Intel's documentation says -Wall, which is supported
4070             # on Windows, does enable remarks so disable them here.
4071             -Wall)                echo $flag -Qdiag-disable:remark ;;
4072             -std=c99)             echo -Qstd=c99 ;;
4073             -flto)                echo -ipo ;;
4074         esac
4075     done
4076 }
4077
4078 icc_flags(){
4079     for flag; do
4080         case $flag in
4081             -flto)                echo -ipo ;;
4082             *)                    echo $flag ;;
4083         esac
4084     done
4085 }
4086
4087 pgi_flags(){
4088     for flag; do
4089         case $flag in
4090             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
4091             -fomit-frame-pointer) echo -Mnoframe ;;
4092             -g)                   echo -gopt ;;
4093             *)                    echo $flag ;;
4094         esac
4095     done
4096 }
4097
4098 suncc_flags(){
4099     for flag; do
4100         case $flag in
4101             -march=*|-mcpu=*)
4102                 case "${flag#*=}" in
4103                     native)                   echo -xtarget=native       ;;
4104                     v9|niagara)               echo -xarch=sparc          ;;
4105                     ultrasparc)               echo -xarch=sparcvis       ;;
4106                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
4107                     i586|pentium)             echo -xchip=pentium        ;;
4108                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
4109                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
4110                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
4111                     pentium4*)          echo -xtarget=pentium4           ;;
4112                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
4113                     *-sse3)             echo -xarch=sse3                 ;;
4114                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
4115                     bonnell)                   echo -xarch=ssse3         ;;
4116                     corei7|nehalem)            echo -xtarget=nehalem     ;;
4117                     westmere)                  echo -xtarget=westmere    ;;
4118                     silvermont)                echo -xarch=sse4_2        ;;
4119                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
4120                     core-avx*|ivybridge|haswell|broadwell|skylake*|knl)
4121                                                echo -xarch=avx           ;;
4122                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
4123                     btver1)                    echo -xarch=amdsse4a      ;;
4124                     btver2|bdver*|znver*)      echo -xarch=avx           ;;
4125                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
4126                     k8|opteron|athlon64|athlon-fx)
4127                                                echo -xarch=sse2a         ;;
4128                     athlon*)                   echo -xarch=pentium_proa  ;;
4129                 esac
4130                 ;;
4131             -std=c99)             echo -xc99              ;;
4132             -fomit-frame-pointer) echo -xregs=frameptr    ;;
4133             -fPIC)                echo -KPIC -xcode=pic32 ;;
4134             -W*,*)                echo $flag              ;;
4135             -f*-*|-W*|-mimpure-text)                      ;;
4136             -shared)              echo -G                 ;;
4137             *)                    echo $flag              ;;
4138         esac
4139     done
4140 }
4141
4142 tms470_flags(){
4143     for flag; do
4144         case $flag in
4145             -march=*|-mcpu=*)
4146                 case "${flag#*=}" in
4147                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
4148                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
4149                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
4150                     armv6*|arm11*)          echo -mv=6   ;;
4151                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
4152                                             echo -mv=5e  ;;
4153                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
4154                 esac
4155                 ;;
4156             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
4157             -mfpu=vfp)      echo --float_support=vfpv2        ;;
4158             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
4159             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
4160             -msoft-float)   echo --float_support=vfplib       ;;
4161             -O[0-3]|-mf=*)  echo $flag                        ;;
4162             -g)             echo -g -mn                       ;;
4163             -pds=*)         echo $flag                        ;;
4164             -D*|-I*)        echo $flag                        ;;
4165             --gcc|--abi=*)  echo $flag                        ;;
4166             -me)            echo $flag                        ;;
4167         esac
4168     done
4169 }
4170
4171 probe_cc(){
4172     pfx=$1
4173     _cc=$2
4174     first=$3
4175
4176     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
4177     unset _ld_o _ldflags _ld_lib _ld_path
4178     unset _depflags _DEPCMD _DEPFLAGS
4179     _flags_filter=echo
4180
4181     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
4182         true # no-op to avoid reading stdin in following checks
4183     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
4184         _type=llvm_gcc
4185         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
4186         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
4187         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4188         _cflags_speed='-O3'
4189         _cflags_size='-Os'
4190     elif $_cc -v 2>&1 | grep -qi ^gcc; then
4191         _type=gcc
4192         gcc_version=$($_cc --version | head -n1)
4193         gcc_basever=$($_cc -dumpversion)
4194         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
4195         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
4196         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
4197         case $gcc_basever in
4198             2) ;;
4199             2.*) ;;
4200             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
4201         esac
4202         if [ "$first" = true ]; then
4203             case $gcc_basever in
4204                 4.2*)
4205                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
4206             esac
4207         fi
4208         _cflags_speed='-O3'
4209         _cflags_size='-Os'
4210     elif $_cc --version 2>/dev/null | grep -q ^icc; then
4211         _type=icc
4212         _ident=$($_cc --version | head -n1)
4213         _depflags='-MMD'
4214         _cflags_speed='-O3'
4215         _cflags_size='-Os'
4216         _cflags_noopt='-O1'
4217         _flags_filter=icc_flags
4218     elif $_cc -v 2>&1 | grep -q xlc; then
4219         _type=xlc
4220         _ident=$($_cc -qversion 2>/dev/null | head -n1)
4221         _cflags_speed='-O5'
4222         _cflags_size='-O5 -qcompact'
4223     elif $_cc -V 2>/dev/null | grep -q Compaq; then
4224         _type=ccc
4225         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
4226         _DEPFLAGS='-M'
4227         _cflags_speed='-fast'
4228         _cflags_size='-O1'
4229         _flags_filter=ccc_flags
4230     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
4231         test -d "$sysroot" || die "No valid sysroot specified."
4232         _type=armcc
4233         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
4234         armcc_conf="$PWD/armcc.conf"
4235         $_cc --arm_linux_configure                 \
4236              --arm_linux_config_file="$armcc_conf" \
4237              --configure_sysroot="$sysroot"        \
4238              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
4239              die "Error creating armcc configuration file."
4240         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
4241         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
4242         as_default="${cross_prefix}gcc"
4243         _depflags='-MMD'
4244         _cflags_speed='-O3'
4245         _cflags_size='-Os'
4246     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
4247         _type=tms470
4248         _ident=$($_cc -version | head -n1 | tr -s ' ')
4249         _flags='--gcc --abi=eabi -me'
4250         _cc_e='-ppl -fe=$@'
4251         _cc_o='-fe=$@'
4252         _depflags='-ppa -ppd=$(@:.o=.d)'
4253         _cflags_speed='-O3 -mf=5'
4254         _cflags_size='-O3 -mf=2'
4255         _flags_filter=tms470_flags
4256     elif $_cc -v 2>&1 | grep -q clang; then
4257         _type=clang
4258         _ident=$($_cc --version 2>/dev/null | head -n1)
4259         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4260         _cflags_speed='-O3'
4261         _cflags_size='-Oz'
4262     elif $_cc -V 2>&1 | grep -q Sun; then
4263         _type=suncc
4264         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
4265         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
4266         _DEPFLAGS='-xM1 -xc99'
4267         _ldflags='-std=c99'
4268         _cflags_speed='-O5'
4269         _cflags_size='-O5 -xspace'
4270         _flags_filter=suncc_flags
4271     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
4272         _type=pathscale
4273         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4274         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4275         _cflags_speed='-O2'
4276         _cflags_size='-Os'
4277         _flags_filter='filter_out -Wdisabled-optimization'
4278     elif $_cc -v 2>&1 | grep -q Open64; then
4279         _type=open64
4280         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4281         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4282         _cflags_speed='-O2'
4283         _cflags_size='-Os'
4284         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
4285     elif $_cc -V 2>&1 | grep -q Portland; then
4286         _type=pgi
4287         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
4288         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
4289         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
4290         _cflags_size="-O2 -Munroll=c:1 $opt_common"
4291         _cflags_noopt="-O"
4292         _flags_filter=pgi_flags
4293     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
4294         _type=armasm
4295         _ident=$($_cc | head -n1)
4296         # 4509: "This form of conditional instruction is deprecated"
4297         _flags="-nologo -ignore 4509"
4298         _flags_filter=armasm_flags
4299     elif $_cc 2>&1 | grep -q Intel; then
4300         _type=icl
4301         _ident=$($_cc 2>&1 | head -n1)
4302         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
4303         # Not only is O3 broken on 13.x+ but it is slower on all previous
4304         # versions (tested) as well.
4305         _cflags_speed="-O2"
4306         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
4307         if $_cc 2>&1 | grep -q Linker; then
4308             _ld_o='-out:$@'
4309         else
4310             _ld_o='-Fe$@'
4311         fi
4312         _cc_o='-Fo$@'
4313         _cc_e='-P'
4314         _flags_filter=icl_flags
4315         _ld_lib='lib%.a'
4316         _ld_path='-libpath:'
4317         # -Qdiag-error to make icl error when seeing certain unknown arguments
4318         _flags='-nologo -Qdiag-error:4044,10157'
4319         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
4320         # with MSVC which enables it by default.
4321         _cflags='-Qms0 -Qvec- -Qsimd- -GS -fp:precise'
4322         disable stripping
4323     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
4324         # lld can emulate multiple different linkers; in ms link.exe mode,
4325         # the -? parameter gives the help output which contains an identifyable
4326         # string, while it gives an error in other modes.
4327         _type=lld-link
4328         # The link.exe mode doesn't have a switch for getting the version,
4329         # but we can force it back to gnu mode and get the version from there.
4330         _ident=$($_cc -flavor gnu --version 2>/dev/null)
4331         _ld_o='-out:$@'
4332         _flags_filter=msvc_flags
4333         _ld_lib='lib%.a'
4334         _ld_path='-libpath:'
4335     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
4336         _type=msvc
4337         _ident=$($_cc 2>&1 | head -n1)
4338         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
4339         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
4340         _cflags_speed="-O2"
4341         _cflags_size="-O1"
4342         _cflags_noopt="-O1"
4343         if $_cc -nologo- 2>&1 | grep -q Linker; then
4344             _ld_o='-out:$@'
4345         else
4346             _ld_o='-Fe$@'
4347         fi
4348         _cc_o='-Fo$@'
4349         _cc_e='-P -Fi$@'
4350         _flags_filter=msvc_flags
4351         _ld_lib='lib%.a'
4352         _ld_path='-libpath:'
4353         _flags='-nologo'
4354         disable stripping
4355     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
4356         _type=cparser
4357         _ident=$($_cc --version | head -n1)
4358         _depflags='-MMD'
4359         _cflags_speed='-O4'
4360         _cflags_size='-O2'
4361         _flags_filter=cparser_flags
4362     fi
4363
4364     eval ${pfx}_type=\$_type
4365     eval ${pfx}_ident=\$_ident
4366 }
4367
4368 set_ccvars(){
4369     eval ${1}_C=\${_cc_c-\${${1}_C}}
4370     eval ${1}_E=\${_cc_e-\${${1}_E}}
4371     eval ${1}_O=\${_cc_o-\${${1}_O}}
4372
4373     if [ -n "$_depflags" ]; then
4374         eval ${1}_DEPFLAGS=\$_depflags
4375     else
4376         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
4377         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
4378         eval DEP${1}FLAGS=\$_flags
4379     fi
4380 }
4381
4382 probe_cc cc "$cc" "true"
4383 cflags_filter=$_flags_filter
4384 cflags_speed=$_cflags_speed
4385 cflags_size=$_cflags_size
4386 cflags_noopt=$_cflags_noopt
4387 add_cflags $_flags $_cflags
4388 cc_ldflags=$_ldflags
4389 set_ccvars CC
4390 set_ccvars CXX
4391
4392 probe_cc hostcc "$host_cc"
4393 host_cflags_filter=$_flags_filter
4394 host_cflags_speed=$_cflags_speed
4395 add_host_cflags  $_flags $_cflags
4396 set_ccvars HOSTCC
4397
4398 test -n "$cc_type" && enable $cc_type ||
4399     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4400
4401 : ${as_default:=$cc}
4402 : ${objcc_default:=$cc}
4403 : ${dep_cc_default:=$cc}
4404 : ${ld_default:=$cc}
4405 : ${host_ld_default:=$host_cc}
4406 set_default ar as objcc dep_cc ld ln_s host_ld windres
4407
4408 probe_cc as "$as"
4409 asflags_filter=$_flags_filter
4410 add_asflags $_flags $_cflags
4411 set_ccvars AS
4412
4413 probe_cc objcc "$objcc"
4414 objcflags_filter=$_flags_filter
4415 add_objcflags $_flags $_cflags
4416 set_ccvars OBJC
4417
4418 probe_cc ld "$ld"
4419 ldflags_filter=$_flags_filter
4420 add_ldflags $_flags $_ldflags
4421 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4422 LD_O=${_ld_o-$LD_O}
4423 LD_LIB=${_ld_lib-$LD_LIB}
4424 LD_PATH=${_ld_path-$LD_PATH}
4425
4426 probe_cc hostld "$host_ld"
4427 host_ldflags_filter=$_flags_filter
4428 add_host_ldflags $_flags $_ldflags
4429 HOSTLD_O=${_ld_o-$HOSTLD_O}
4430
4431 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4432     probe_cc depcc "$dep_cc"
4433     CCDEP=${_DEPCMD:-$DEPCMD}
4434     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4435     DEPCCFLAGS=$_flags
4436 fi
4437
4438 if $ar 2>&1 | grep -q Microsoft; then
4439     arflags="-nologo"
4440     ar_o='-out:$@'
4441 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
4442     arflags="rq"
4443     ar_o='$@'
4444 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
4445     arflags='-Xany -r -c'
4446     ar_o='$@'
4447 elif $ar 2>&1 | grep -q "\[D\] "; then
4448     arflags="rcD"
4449     ar_o='$@'
4450 else
4451     arflags="rc"
4452     ar_o='$@'
4453 fi
4454
4455 add_cflags $extra_cflags
4456 add_cxxflags $extra_cxxflags
4457 add_objcflags $extra_objcflags
4458 add_asflags $extra_cflags
4459
4460 if test -n "$sysroot"; then
4461     case "$cc_type" in
4462         gcc|llvm_gcc|clang)
4463             add_cppflags --sysroot="$sysroot"
4464             add_ldflags --sysroot="$sysroot"
4465 # On Darwin --sysroot may be ignored, -isysroot always affects headers and linking
4466             add_cppflags -isysroot "$sysroot"
4467             add_ldflags -isysroot "$sysroot"
4468         ;;
4469         tms470)
4470             add_cppflags -I"$sysinclude"
4471             add_ldflags  --sysroot="$sysroot"
4472         ;;
4473     esac
4474 fi
4475
4476 if test "$cpu" = host; then
4477     enabled cross_compile &&
4478         die "--cpu=host makes no sense when cross-compiling."
4479
4480     case "$cc_type" in
4481         gcc|llvm_gcc)
4482             check_native(){
4483                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4484                 sed -n "/cc1.*$1=/{
4485                             s/.*$1=\\([^ ]*\\).*/\\1/
4486                             p
4487                             q
4488                         }" $TMPE
4489             }
4490             cpu=$(check_native -march || check_native -mcpu)
4491         ;;
4492         clang)
4493             check_native(){
4494                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4495                 sed -n "/cc1.*-target-cpu /{
4496                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4497                             p
4498                             q
4499                         }" $TMPE
4500             }
4501             cpu=$(check_native -march)
4502         ;;
4503     esac
4504
4505     test "${cpu:-host}" = host &&
4506         die "--cpu=host not supported with compiler $cc"
4507 fi
4508
4509 # Deal with common $arch aliases
4510 case "$arch" in
4511     aarch64|arm64)
4512         arch="aarch64"
4513     ;;
4514     arm*|iPad*|iPhone*)
4515         arch="arm"
4516     ;;
4517     mips*|IP*)
4518         case "$arch" in
4519         *el)
4520             add_cppflags -EL
4521             add_ldflags -EL
4522         ;;
4523         *eb)
4524             add_cppflags -EB
4525             add_ldflags -EB
4526         ;;
4527         esac
4528         arch="mips"
4529     ;;
4530     parisc*|hppa*)
4531         arch="parisc"
4532     ;;
4533     "Power Macintosh"|ppc*|powerpc*)
4534         arch="ppc"
4535     ;;
4536     s390|s390x)
4537         arch="s390"
4538     ;;
4539     sh4|sh)
4540         arch="sh4"
4541     ;;
4542     sun4*|sparc*)
4543         arch="sparc"
4544     ;;
4545     tilegx|tile-gx)
4546         arch="tilegx"
4547     ;;
4548     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4549         arch="x86"
4550     ;;
4551 esac
4552
4553 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4554 enable $arch
4555
4556 # Add processor-specific flags
4557 if enabled aarch64; then
4558
4559     case $cpu in
4560         armv*)
4561             cpuflags="-march=$cpu"
4562         ;;
4563         *)
4564             cpuflags="-mcpu=$cpu"
4565         ;;
4566     esac
4567
4568 elif enabled alpha; then
4569
4570     cpuflags="-mcpu=$cpu"
4571
4572 elif enabled arm; then
4573
4574     check_arm_arch() {
4575         check_cpp_condition stddef.h \
4576             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4577             $cpuflags
4578     }
4579
4580     probe_arm_arch() {
4581         if   check_arm_arch 4;        then echo armv4
4582         elif check_arm_arch 4T;       then echo armv4t
4583         elif check_arm_arch 5;        then echo armv5
4584         elif check_arm_arch 5E;       then echo armv5e
4585         elif check_arm_arch 5T;       then echo armv5t
4586         elif check_arm_arch 5TE;      then echo armv5te
4587         elif check_arm_arch 5TEJ;     then echo armv5te
4588         elif check_arm_arch 6;        then echo armv6
4589         elif check_arm_arch 6J;       then echo armv6j
4590         elif check_arm_arch 6K;       then echo armv6k
4591         elif check_arm_arch 6Z;       then echo armv6z
4592         elif check_arm_arch 6ZK;      then echo armv6zk
4593         elif check_arm_arch 6T2;      then echo armv6t2
4594         elif check_arm_arch 7;        then echo armv7
4595         elif check_arm_arch 7A  7_A;  then echo armv7-a
4596         elif check_arm_arch 7S;       then echo armv7-a
4597         elif check_arm_arch 7R  7_R;  then echo armv7-r
4598         elif check_arm_arch 7M  7_M;  then echo armv7-m
4599         elif check_arm_arch 7EM 7E_M; then echo armv7-m
4600         elif check_arm_arch 8A  8_A;  then echo armv8-a
4601         fi
4602     }
4603
4604     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4605
4606     case $cpu in
4607         armv*)
4608             cpuflags="-march=$cpu"
4609             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4610         ;;
4611         *)
4612             cpuflags="-mcpu=$cpu"
4613             case $cpu in
4614                 cortex-a*)                               subarch=armv7a  ;;
4615                 cortex-r*)                               subarch=armv7r  ;;
4616                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4617                 arm11*)                                  subarch=armv6   ;;
4618                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4619                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4620                 *)                             subarch=$(probe_arm_arch) ;;
4621             esac
4622         ;;
4623     esac
4624
4625     case "$subarch" in
4626         armv5t*)    enable fast_clz                ;;
4627         armv[6-8]*)
4628             enable fast_clz
4629             disabled fast_unaligned || enable fast_unaligned
4630             ;;
4631     esac
4632
4633 elif enabled avr32; then
4634
4635     case $cpu in
4636         ap7[02]0[0-2])
4637             subarch="avr32_ap"
4638             cpuflags="-mpart=$cpu"
4639         ;;
4640         ap)
4641             subarch="avr32_ap"
4642             cpuflags="-march=$cpu"
4643         ;;
4644         uc3[ab]*)
4645             subarch="avr32_uc"
4646             cpuflags="-mcpu=$cpu"
4647         ;;
4648         uc)
4649             subarch="avr32_uc"
4650             cpuflags="-march=$cpu"
4651         ;;
4652     esac
4653
4654 elif enabled bfin; then
4655
4656     cpuflags="-mcpu=$cpu"
4657
4658 elif enabled mips; then
4659
4660     cpuflags="-march=$cpu"
4661
4662     if [ "$cpu" != "generic" ]; then
4663         disable mips32r2
4664         disable mips32r5
4665         disable mips64r2
4666         disable mips32r6
4667         disable mips64r6
4668         disable loongson2
4669         disable loongson3
4670
4671         case $cpu in
4672             24kc|24kf*|24kec|34kc|1004kc|24kef*|34kf*|1004kf*|74kc|74kf)
4673                 enable mips32r2
4674                 disable msa
4675             ;;
4676             p5600|i6400|p6600)
4677                 disable mipsdsp
4678                 disable mipsdspr2
4679             ;;
4680             loongson*)
4681                 enable loongson2
4682                 enable loongson3
4683                 enable local_aligned
4684                 enable simd_align_16
4685                 enable fast_64bit
4686                 enable fast_clz
4687                 enable fast_cmov
4688                 enable fast_unaligned
4689                 disable aligned_stack
4690                 disable mipsfpu
4691                 disable mipsdsp
4692                 disable mipsdspr2
4693                 case $cpu in
4694                     loongson3*)
4695                         cpuflags="-march=loongson3a -mhard-float -fno-expensive-optimizations"
4696                     ;;
4697                     loongson2e)
4698                         cpuflags="-march=loongson2e -mhard-float -fno-expensive-optimizations"
4699                     ;;
4700                     loongson2f)
4701                         cpuflags="-march=loongson2f -mhard-float -fno-expensive-optimizations"
4702                     ;;
4703                 esac
4704             ;;
4705             *)
4706                 # Unknown CPU. Disable everything.
4707                 warn "unknown CPU. Disabling all MIPS optimizations."
4708                 disable mipsfpu
4709                 disable mipsdsp
4710                 disable mipsdspr2
4711                 disable msa
4712                 disable mmi
4713             ;;
4714         esac
4715
4716         case $cpu in
4717             24kc)
4718                 disable mipsfpu
4719                 disable mipsdsp
4720                 disable mipsdspr2
4721             ;;
4722             24kf*)
4723                 disable mipsdsp
4724                 disable mipsdspr2
4725             ;;
4726             24kec|34kc|1004kc)
4727                 disable mipsfpu
4728                 disable mipsdspr2
4729             ;;
4730             24kef*|34kf*|1004kf*)
4731                 disable mipsdspr2
4732             ;;
4733             74kc)
4734                 disable mipsfpu
4735             ;;
4736             p5600)
4737                 enable mips32r5
4738                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
4739             ;;
4740             i6400)
4741                 enable mips64r6
4742                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4743             ;;
4744             p6600)
4745                 enable mips64r6
4746                 check_cflags "-mtune=p6600 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4747             ;;
4748         esac
4749     else
4750         # We do not disable anything. Is up to the user to disable the unwanted features.
4751         warn 'generic cpu selected'
4752     fi
4753
4754 elif enabled ppc; then
4755
4756     disable ldbrx
4757
4758     case $(tolower $cpu) in
4759         601|ppc601|powerpc601)
4760             cpuflags="-mcpu=601"
4761             disable altivec
4762         ;;
4763         603*|ppc603*|powerpc603*)
4764             cpuflags="-mcpu=603"
4765             disable altivec
4766         ;;
4767         604*|ppc604*|powerpc604*)
4768             cpuflags="-mcpu=604"
4769             disable altivec
4770         ;;
4771         g3|75*|ppc75*|powerpc75*)
4772             cpuflags="-mcpu=750"
4773             disable altivec
4774         ;;
4775         g4|745*|ppc745*|powerpc745*)
4776             cpuflags="-mcpu=7450"
4777             disable vsx
4778         ;;
4779         74*|ppc74*|powerpc74*)
4780             cpuflags="-mcpu=7400"
4781             disable vsx
4782         ;;
4783         g5|970|ppc970|powerpc970)
4784             cpuflags="-mcpu=970"
4785             disable vsx
4786         ;;
4787         power[3-6]*)
4788             cpuflags="-mcpu=$cpu"
4789             disable vsx
4790         ;;
4791         power[7-8]*)
4792             cpuflags="-mcpu=$cpu"
4793         ;;
4794         cell)
4795             cpuflags="-mcpu=cell"
4796             enable ldbrx
4797             disable vsx
4798         ;;
4799         e500mc)
4800             cpuflags="-mcpu=e500mc"
4801             disable altivec
4802         ;;
4803         e500v2)
4804             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
4805             disable altivec
4806             disable dcbzl
4807         ;;
4808         e500)
4809             cpuflags="-mcpu=8540 -mhard-float"
4810             disable altivec
4811             disable dcbzl
4812         ;;
4813     esac
4814
4815 elif enabled sparc; then
4816
4817     case $cpu in
4818         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
4819             cpuflags="-mcpu=$cpu"
4820         ;;
4821         ultrasparc*|niagara[234])
4822             cpuflags="-mcpu=$cpu"
4823         ;;
4824     esac
4825
4826 elif enabled x86; then
4827
4828     case $cpu in
4829         i[345]86|pentium)
4830             cpuflags="-march=$cpu"
4831             disable i686
4832             disable mmx
4833         ;;
4834         # targets that do NOT support nopl and conditional mov (cmov)
4835         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
4836             cpuflags="-march=$cpu"
4837             disable i686
4838         ;;
4839         # targets that do support nopl and conditional mov (cmov)
4840         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
4841         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|skylake*|knl\
4842         |amdfam10|barcelona|b[dt]ver*|znver*)
4843             cpuflags="-march=$cpu"
4844             enable i686
4845             enable fast_cmov
4846         ;;
4847         # targets that do support conditional mov but on which it's slow
4848         pentium4|pentium4m|prescott|nocona)
4849             cpuflags="-march=$cpu"
4850             enable i686
4851             disable fast_cmov
4852         ;;
4853     esac
4854
4855 fi
4856
4857 if [ "$cpu" != generic ]; then
4858     add_cflags  $cpuflags
4859     add_asflags $cpuflags
4860     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
4861 fi
4862
4863 # compiler sanity check
4864 check_exec <<EOF
4865 int main(void){ return 0; }
4866 EOF
4867 if test "$?" != 0; then
4868     echo "$cc is unable to create an executable file."
4869     if test -z "$cross_prefix" && ! enabled cross_compile ; then
4870         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
4871         echo "Only do this if you know what cross compiling means."
4872     fi
4873