Revert "Merge commit '8e97a8c69162afce47abea96c8c0914f3550e212'"
[ffmpeg.git] / configure
1 #!/bin/sh
2 #
3 # FFmpeg configure script
4 #
5 # Copyright (c) 2000-2002 Fabrice Bellard
6 # Copyright (c) 2005-2008 Diego Biurrun
7 # Copyright (c) 2005-2008 Mans Rullgard
8 #
9
10 # Prevent locale nonsense from breaking basic text processing.
11 LC_ALL=C
12 export LC_ALL
13
14 # make sure we are running under a compatible shell
15 # try to make this part work with most shells
16
17 try_exec(){
18     echo "Trying shell $1"
19     type "$1" > /dev/null 2>&1 && exec "$@"
20 }
21
22 unset foo
23 (: ${foo%%bar}) 2> /dev/null
24 E1="$?"
25
26 (: ${foo?}) 2> /dev/null
27 E2="$?"
28
29 if test "$E1" != 0 || test "$E2" = 0; then
30     echo "Broken shell detected.  Trying alternatives."
31     export FF_CONF_EXEC
32     if test "0$FF_CONF_EXEC" -lt 1; then
33         FF_CONF_EXEC=1
34         try_exec bash "$0" "$@"
35     fi
36     if test "0$FF_CONF_EXEC" -lt 2; then
37         FF_CONF_EXEC=2
38         try_exec ksh "$0" "$@"
39     fi
40     if test "0$FF_CONF_EXEC" -lt 3; then
41         FF_CONF_EXEC=3
42         try_exec /usr/xpg4/bin/sh "$0" "$@"
43     fi
44     echo "No compatible shell script interpreter found."
45     echo "This configure script requires a POSIX-compatible shell"
46     echo "such as bash or ksh."
47     echo "THIS IS NOT A BUG IN FFMPEG, DO NOT REPORT IT AS SUCH."
48     echo "Instead, install a working POSIX-compatible shell."
49     echo "Disabling this configure test will create a broken FFmpeg."
50     if test "$BASH_VERSION" = '2.04.0(1)-release'; then
51         echo "This bash version ($BASH_VERSION) is broken on your platform."
52         echo "Upgrade to a later version if available."
53     fi
54     exit 1
55 fi
56
57 test -d /usr/xpg4/bin && PATH=/usr/xpg4/bin:$PATH
58
59 show_help(){
60     cat <<EOF
61 Usage: configure [options]
62 Options: [defaults in brackets after descriptions]
63
64 Help options:
65   --help                   print this message
66   --quiet                  Suppress showing informative output
67   --list-decoders          show all available decoders
68   --list-encoders          show all available encoders
69   --list-hwaccels          show all available hardware accelerators
70   --list-demuxers          show all available demuxers
71   --list-muxers            show all available muxers
72   --list-parsers           show all available parsers
73   --list-protocols         show all available protocols
74   --list-bsfs              show all available bitstream filters
75   --list-indevs            show all available input devices
76   --list-outdevs           show all available output devices
77   --list-filters           show all available filters
78
79 Standard options:
80   --logfile=FILE           log tests and output to FILE [ffbuild/config.log]
81   --disable-logging        do not log configure debug information
82   --fatal-warnings         fail if any configure warning is generated
83   --prefix=PREFIX          install in PREFIX [$prefix_default]
84   --bindir=DIR             install binaries in DIR [PREFIX/bin]
85   --datadir=DIR            install data files in DIR [PREFIX/share/ffmpeg]
86   --docdir=DIR             install documentation in DIR [PREFIX/share/doc/ffmpeg]
87   --libdir=DIR             install libs in DIR [PREFIX/lib]
88   --shlibdir=DIR           install shared libs in DIR [LIBDIR]
89   --incdir=DIR             install includes in DIR [PREFIX/include]
90   --mandir=DIR             install man page in DIR [PREFIX/share/man]
91   --pkgconfigdir=DIR       install pkg-config files in DIR [LIBDIR/pkgconfig]
92   --enable-rpath           use rpath to allow installing libraries in paths
93                            not part of the dynamic linker search path
94                            use rpath when linking programs (USE WITH CARE)
95   --install-name-dir=DIR   Darwin directory name for installed targets
96
97 Licensing options:
98   --enable-gpl             allow use of GPL code, the resulting libs
99                            and binaries will be under GPL [no]
100   --enable-version3        upgrade (L)GPL to version 3 [no]
101   --enable-nonfree         allow use of nonfree code, the resulting libs
102                            and binaries will be unredistributable [no]
103
104 Configuration options:
105   --disable-static         do not build static libraries [no]
106   --enable-shared          build shared libraries [no]
107   --enable-small           optimize for size instead of speed
108   --disable-runtime-cpudetect disable detecting CPU capabilities at runtime (smaller binary)
109   --enable-gray            enable full grayscale support (slower color)
110   --disable-swscale-alpha  disable alpha channel support in swscale
111   --disable-all            disable building components, libraries and programs
112   --disable-autodetect     disable automatically detected external libraries [no]
113
114 Program options:
115   --disable-programs       do not build command line programs
116   --disable-ffmpeg         disable ffmpeg build
117   --disable-ffplay         disable ffplay build
118   --disable-ffprobe        disable ffprobe build
119   --disable-ffserver       disable ffserver build
120
121 Documentation options:
122   --disable-doc            do not build documentation
123   --disable-htmlpages      do not build HTML documentation pages
124   --disable-manpages       do not build man documentation pages
125   --disable-podpages       do not build POD documentation pages
126   --disable-txtpages       do not build text documentation pages
127
128 Component options:
129   --disable-avdevice       disable libavdevice build
130   --disable-avcodec        disable libavcodec build
131   --disable-avformat       disable libavformat build
132   --disable-swresample     disable libswresample build
133   --disable-swscale        disable libswscale build
134   --disable-postproc       disable libpostproc build
135   --disable-avfilter       disable libavfilter build
136   --enable-avresample      enable libavresample build [no]
137   --disable-pthreads       disable pthreads [autodetect]
138   --disable-w32threads     disable Win32 threads [autodetect]
139   --disable-os2threads     disable OS/2 threads [autodetect]
140   --disable-network        disable network support [no]
141   --disable-dct            disable DCT code
142   --disable-dwt            disable DWT code
143   --disable-error-resilience disable error resilience code
144   --disable-lsp            disable LSP code
145   --disable-lzo            disable LZO decoder code
146   --disable-mdct           disable MDCT code
147   --disable-rdft           disable RDFT code
148   --disable-fft            disable FFT code
149   --disable-faan           disable floating point AAN (I)DCT code
150   --disable-pixelutils     disable pixel utils in libavutil
151
152 Individual component options:
153   --disable-everything     disable all components listed below
154   --disable-encoder=NAME   disable encoder NAME
155   --enable-encoder=NAME    enable encoder NAME
156   --disable-encoders       disable all encoders
157   --disable-decoder=NAME   disable decoder NAME
158   --enable-decoder=NAME    enable decoder NAME
159   --disable-decoders       disable all decoders
160   --disable-hwaccel=NAME   disable hwaccel NAME
161   --enable-hwaccel=NAME    enable hwaccel NAME
162   --disable-hwaccels       disable all hwaccels
163   --disable-muxer=NAME     disable muxer NAME
164   --enable-muxer=NAME      enable muxer NAME
165   --disable-muxers         disable all muxers
166   --disable-demuxer=NAME   disable demuxer NAME
167   --enable-demuxer=NAME    enable demuxer NAME
168   --disable-demuxers       disable all demuxers
169   --enable-parser=NAME     enable parser NAME
170   --disable-parser=NAME    disable parser NAME
171   --disable-parsers        disable all parsers
172   --enable-bsf=NAME        enable bitstream filter NAME
173   --disable-bsf=NAME       disable bitstream filter NAME
174   --disable-bsfs           disable all bitstream filters
175   --enable-protocol=NAME   enable protocol NAME
176   --disable-protocol=NAME  disable protocol NAME
177   --disable-protocols      disable all protocols
178   --enable-indev=NAME      enable input device NAME
179   --disable-indev=NAME     disable input device NAME
180   --disable-indevs         disable input devices
181   --enable-outdev=NAME     enable output device NAME
182   --disable-outdev=NAME    disable output device NAME
183   --disable-outdevs        disable output devices
184   --disable-devices        disable all devices
185   --enable-filter=NAME     enable filter NAME
186   --disable-filter=NAME    disable filter NAME
187   --disable-filters        disable all filters
188   --disable-v4l2_m2m       disable V4L2 mem2mem code [autodetect]
189
190 External library support:
191
192   Using any of the following switches will allow FFmpeg to link to the
193   corresponding external library. All the components depending on that library
194   will become enabled, if all their other dependencies are met and they are not
195   explicitly disabled. E.g. --enable-libwavpack will enable linking to
196   libwavpack and allow the libwavpack encoder to be built, unless it is
197   specifically disabled with --disable-encoder=libwavpack.
198
199   Note that only the system libraries are auto-detected. All the other external
200   libraries must be explicitly enabled.
201
202   Also note that the following help text describes the purpose of the libraries
203   themselves, not all their features will necessarily be usable by FFmpeg.
204
205   --disable-alsa           disable ALSA support [autodetect]
206   --disable-appkit         disable Apple AppKit framework [autodetect]
207   --disable-avfoundation   disable Apple AVFoundation framework [autodetect]
208   --enable-avisynth        enable reading of AviSynth script files [no]
209   --disable-bzlib          disable bzlib [autodetect]
210   --disable-coreimage      disable Apple CoreImage framework [autodetect]
211   --enable-chromaprint     enable audio fingerprinting with chromaprint [no]
212   --enable-frei0r          enable frei0r video filtering [no]
213   --enable-gcrypt          enable gcrypt, needed for rtmp(t)e support
214                            if openssl, librtmp or gmp is not used [no]
215   --enable-gmp             enable gmp, needed for rtmp(t)e support
216                            if openssl or librtmp is not used [no]
217   --enable-gnutls          enable gnutls, needed for https support
218                            if openssl is not used [no]
219   --disable-iconv          disable iconv [autodetect]
220   --enable-jni             enable JNI support [no]
221   --enable-ladspa          enable LADSPA audio filtering [no]
222   --enable-libass          enable libass subtitles rendering,
223                            needed for subtitles and ass filter [no]
224   --enable-libbluray       enable BluRay reading using libbluray [no]
225   --enable-libbs2b         enable bs2b DSP library [no]
226   --enable-libcaca         enable textual display using libcaca [no]
227   --enable-libcelt         enable CELT decoding via libcelt [no]
228   --enable-libcdio         enable audio CD grabbing with libcdio [no]
229   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
230                            and libraw1394 [no]
231   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
232   --enable-libflite        enable flite (voice synthesis) support via libflite [no]
233   --enable-libfontconfig   enable libfontconfig, useful for drawtext filter [no]
234   --enable-libfreetype     enable libfreetype, needed for drawtext filter [no]
235   --enable-libfribidi      enable libfribidi, improves drawtext filter [no]
236   --enable-libgme          enable Game Music Emu via libgme [no]
237   --enable-libgsm          enable GSM de/encoding via libgsm [no]
238   --enable-libiec61883     enable iec61883 via libiec61883 [no]
239   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
240   --enable-libjack         enable JACK audio sound server [no]
241   --enable-libkvazaar      enable HEVC encoding via libkvazaar [no]
242   --enable-libmodplug      enable ModPlug via libmodplug [no]
243   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
244   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
245   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
246   --enable-libopencv       enable video filtering via libopencv [no]
247   --enable-libopenh264     enable H.264 encoding via OpenH264 [no]
248   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
249   --enable-libopenmpt      enable decoding tracked files via libopenmpt [no]
250   --enable-libopus         enable Opus de/encoding via libopus [no]
251   --enable-libpulse        enable Pulseaudio input via libpulse [no]
252   --enable-librsvg         enable SVG rasterization via librsvg [no]
253   --enable-librubberband   enable rubberband needed for rubberband filter [no]
254   --enable-librtmp         enable RTMP[E] support via librtmp [no]
255   --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
256   --enable-libsmbclient    enable Samba protocol via libsmbclient [no]
257   --enable-libsnappy       enable Snappy compression, needed for hap encoding [no]
258   --enable-libsoxr         enable Include libsoxr resampling [no]
259   --enable-libspeex        enable Speex de/encoding via libspeex [no]
260   --enable-libssh          enable SFTP protocol via libssh [no]
261   --enable-libtesseract    enable Tesseract, needed for ocr filter [no]
262   --enable-libtheora       enable Theora encoding via libtheora [no]
263   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
264   --enable-libv4l2         enable libv4l2/v4l-utils [no]
265   --enable-libvidstab      enable video stabilization using vid.stab [no]
266   --enable-libvmaf         enable vmaf filter via libvmaf [no]
267   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
268   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
269                            native implementation exists [no]
270   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
271   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
272   --enable-libwebp         enable WebP encoding via libwebp [no]
273   --enable-libx264         enable H.264 encoding via x264 [no]
274   --enable-libx265         enable HEVC encoding via x265 [no]
275   --enable-libxavs         enable AVS encoding via xavs [no]
276   --enable-libxcb          enable X11 grabbing using XCB [autodetect]
277   --enable-libxcb-shm      enable X11 grabbing shm communication [autodetect]
278   --enable-libxcb-xfixes   enable X11 grabbing mouse rendering [autodetect]
279   --enable-libxcb-shape    enable X11 grabbing shape rendering [autodetect]
280   --enable-libxvid         enable Xvid encoding via xvidcore,
281                            native MPEG-4/Xvid encoder exists [no]
282   --enable-libxml2         enable XML parsing using the C library libxml2 [no]
283   --enable-libzimg         enable z.lib, needed for zscale filter [no]
284   --enable-libzmq          enable message passing via libzmq [no]
285   --enable-libzvbi         enable teletext support via libzvbi [no]
286   --disable-lzma           disable lzma [autodetect]
287   --enable-decklink        enable Blackmagic DeckLink I/O support [no]
288   --enable-libndi_newtek   enable Newteck NDI I/O support [no]
289   --enable-mediacodec      enable Android MediaCodec support [no]
290   --enable-libmysofa       enable libmysofa, needed for sofalizer filter [no]
291   --enable-openal          enable OpenAL 1.1 capture support [no]
292   --enable-opencl          enable OpenCL code
293   --enable-opengl          enable OpenGL rendering [no]
294   --enable-openssl         enable openssl, needed for https support
295                            if gnutls is not used [no]
296   --disable-sndio          disable sndio support [autodetect]
297   --disable-schannel       disable SChannel SSP, needed for TLS support on
298                            Windows if openssl and gnutls are not used [autodetect]
299   --disable-sdl2           disable sdl2 [autodetect]
300   --disable-securetransport disable Secure Transport, needed for TLS support
301                            on OSX if openssl and gnutls are not used [autodetect]
302   --disable-xlib           disable xlib [autodetect]
303   --disable-zlib           disable zlib [autodetect]
304
305   The following libraries provide various hardware acceleration features:
306   --disable-audiotoolbox   disable Apple AudioToolbox code [autodetect]
307   --disable-cuda           disable dynamically linked Nvidia CUDA code [autodetect]
308   --enable-cuda-sdk        enable CUDA features that require the CUDA SDK [no]
309   --disable-cuvid          disable Nvidia CUVID support [autodetect]
310   --disable-d3d11va        disable Microsoft Direct3D 11 video acceleration code [autodetect]
311   --disable-dxva2          disable Microsoft DirectX 9 video acceleration code [autodetect]
312   --enable-libdrm          enable DRM code (Linux) [no]
313   --enable-libmfx          enable Intel MediaSDK (AKA Quick Sync Video) code via libmfx [no]
314   --enable-libnpp          enable Nvidia Performance Primitives-based code [no]
315   --enable-mmal            enable Broadcom Multi-Media Abstraction Layer (Raspberry Pi) via MMAL [no]
316   --disable-nvdec          disable Nvidia video decoding acceleration (via hwaccel) [autodetect]
317   --disable-nvenc          disable Nvidia video encoding code [autodetect]
318   --enable-omx             enable OpenMAX IL code [no]
319   --enable-omx-rpi         enable OpenMAX IL code for Raspberry Pi [no]
320   --enable-rkmpp           enable Rockchip Media Process Platform code [no]
321   --disable-vaapi          disable Video Acceleration API (mainly Unix/Intel) code [autodetect]
322   --disable-vdpau          disable Nvidia Video Decode and Presentation API for Unix code [autodetect]
323   --disable-videotoolbox   disable VideoToolbox code [autodetect]
324
325 Toolchain options:
326   --arch=ARCH              select architecture [$arch]
327   --cpu=CPU                select the minimum required CPU (affects
328                            instruction selection, may crash on older CPUs)
329   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
330   --progs-suffix=SUFFIX    program name suffix []
331   --enable-cross-compile   assume a cross-compiler is used
332   --sysroot=PATH           root of cross-build tree
333   --sysinclude=PATH        location of cross-build system headers
334   --target-os=OS           compiler targets OS [$target_os]
335   --target-exec=CMD        command to run executables on target
336   --target-path=DIR        path to view of build directory on target
337   --target-samples=DIR     path to samples directory on target
338   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
339   --toolchain=NAME         set tool defaults according to NAME
340   --nm=NM                  use nm tool NM [$nm_default]
341   --ar=AR                  use archive tool AR [$ar_default]
342   --as=AS                  use assembler AS [$as_default]
343   --ln_s=LN_S              use symbolic link tool LN_S [$ln_s_default]
344   --strip=STRIP            use strip tool STRIP [$strip_default]
345   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
346   --x86asmexe=EXE          use nasm-compatible assembler EXE [$x86asmexe_default]
347   --cc=CC                  use C compiler CC [$cc_default]
348   --cxx=CXX                use C compiler CXX [$cxx_default]
349   --objcc=OCC              use ObjC compiler OCC [$cc_default]
350   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
351   --nvcc=NVCC              use Nvidia CUDA compiler NVCC [$nvcc_default]
352   --ld=LD                  use linker LD [$ld_default]
353   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
354   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
355   --ranlib=RANLIB          use ranlib RANLIB [$ranlib_default]
356   --doxygen=DOXYGEN        use DOXYGEN to generate API doc [$doxygen_default]
357   --host-cc=HOSTCC         use host C compiler HOSTCC
358   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
359   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
360   --host-ld=HOSTLD         use host linker HOSTLD
361   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
362   --host-libs=HLIBS        use libs HLIBS when linking for host
363   --host-os=OS             compiler host OS [$target_os]
364   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
365   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
366   --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
367   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
368   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
369   --extra-ldsoflags=ELDFLAGS add ELDFLAGS to LDSOFLAGS [$LDSOFLAGS]
370   --extra-libs=ELIBS       add ELIBS [$ELIBS]
371   --extra-version=STRING   version string suffix []
372   --optflags=OPTFLAGS      override optimization-related compiler flags
373   --nvccflags=NVCCFLAGS    override nvcc flags [$nvccflags_default]
374   --build-suffix=SUFFIX    library name suffix []
375   --enable-pic             build position-independent code
376   --enable-thumb           compile for Thumb instruction set
377   --enable-lto             use link-time optimization
378   --env="ENV=override"     override the environment variables
379
380 Advanced options (experts only):
381   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
382   --custom-allocator=NAME  use a supported custom allocator
383   --disable-symver         disable symbol versioning
384   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
385   --disable-safe-bitstream-reader
386                            disable buffer boundary checking in bitreaders
387                            (faster, but may crash)
388   --sws-max-filter-size=N  the max filter size swscale uses [$sws_max_filter_size_default]
389
390 Optimization options (experts only):
391   --disable-asm            disable all assembly optimizations
392   --disable-altivec        disable AltiVec optimizations
393   --disable-vsx            disable VSX optimizations
394   --disable-power8         disable POWER8 optimizations
395   --disable-amd3dnow       disable 3DNow! optimizations
396   --disable-amd3dnowext    disable 3DNow! extended optimizations
397   --disable-mmx            disable MMX optimizations
398   --disable-mmxext         disable MMXEXT optimizations
399   --disable-sse            disable SSE optimizations
400   --disable-sse2           disable SSE2 optimizations
401   --disable-sse3           disable SSE3 optimizations
402   --disable-ssse3          disable SSSE3 optimizations
403   --disable-sse4           disable SSE4 optimizations
404   --disable-sse42          disable SSE4.2 optimizations
405   --disable-avx            disable AVX optimizations
406   --disable-xop            disable XOP optimizations
407   --disable-fma3           disable FMA3 optimizations
408   --disable-fma4           disable FMA4 optimizations
409   --disable-avx2           disable AVX2 optimizations
410   --disable-aesni          disable AESNI optimizations
411   --disable-armv5te        disable armv5te optimizations
412   --disable-armv6          disable armv6 optimizations
413   --disable-armv6t2        disable armv6t2 optimizations
414   --disable-vfp            disable VFP optimizations
415   --disable-neon           disable NEON optimizations
416   --disable-inline-asm     disable use of inline assembly
417   --disable-x86asm         disable use of standalone x86 assembly
418   --disable-mipsdsp        disable MIPS DSP ASE R1 optimizations
419   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
420   --disable-msa            disable MSA optimizations
421   --disable-mipsfpu        disable floating point MIPS optimizations
422   --disable-mmi            disable Loongson SIMD optimizations
423   --disable-fast-unaligned consider unaligned accesses slow
424
425 Developer options (useful when working on FFmpeg itself):
426   --disable-debug          disable debugging symbols
427   --enable-debug=LEVEL     set the debug level [$debuglevel]
428   --disable-optimizations  disable compiler optimizations
429   --enable-extra-warnings  enable more compiler warnings
430   --disable-stripping      disable stripping of executables and shared libraries
431   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
432                            2 causes a slowdown at runtime.
433   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
434   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
435                            leaks and errors, using the specified valgrind binary.
436                            Cannot be combined with --target-exec
437   --enable-ftrapv          Trap arithmetic overflows
438   --samples=PATH           location of test samples for FATE, if not set use
439                            \$FATE_SAMPLES at make invocation time.
440   --enable-neon-clobber-test check NEON registers for clobbering (should be
441                            used only for debugging purposes)
442   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
443                            should be used only for debugging purposes)
444   --enable-random          randomly enable/disable components
445   --disable-random
446   --enable-random=LIST     randomly enable/disable specific components or
447   --disable-random=LIST    component groups. LIST is a comma-separated list
448                            of NAME[:PROB] entries where NAME is a component
449                            (group) and PROB the probability associated with
450                            NAME (default 0.5).
451   --random-seed=VALUE      seed value for --enable/disable-random
452   --disable-valgrind-backtrace do not print a backtrace under Valgrind
453                            (only applies to --disable-optimizations builds)
454   --enable-osfuzz          Enable building fuzzer tool
455   --libfuzzer=PATH         path to libfuzzer
456   --ignore-tests=TESTS     comma-separated list (without "fate-" prefix
457                            in the name) of tests whose result is ignored
458   --enable-linux-perf      enable Linux Performance Monitor API
459
460 NOTE: Object files are built at the place where configure is launched.
461 EOF
462   exit 0
463 }
464
465 quotes='""'
466 if test -t 1 && which tput >/dev/null 2>&1; then
467     ncolors=$(tput colors)
468     if test -n "$ncolors" && test $ncolors -ge 8; then
469         bold_color=$(tput bold)
470         warn_color=$(tput setaf 3)
471         error_color=$(tput setaf 1)
472         reset_color=$(tput sgr0)
473     fi
474     # 72 used instead of 80 since that's the default of pr
475     ncols=$(tput cols)
476 fi
477 : ${ncols:=72}
478
479 log(){
480     echo "$@" >> $logfile
481 }
482
483 log_file(){
484     log BEGIN $1
485     pr -n -t $1 >> $logfile
486     log END $1
487 }
488
489 warn(){
490     log "WARNING: $*"
491     WARNINGS="${WARNINGS}WARNING: $*\n"
492 }
493
494 die(){
495     log "$@"
496     echo "$error_color$bold_color$@$reset_color"
497     cat <<EOF
498
499 If you think configure made a mistake, make sure you are using the latest
500 version from Git.  If the latest version fails, report the problem to the
501 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
502 EOF
503     if disabled logging; then
504         cat <<EOF
505 Rerun configure with logging enabled (do not use --disable-logging), and
506 include the log this produces with your report.
507 EOF
508     else
509         cat <<EOF
510 Include the log file "$logfile" produced by configure as this will help
511 solve the problem.
512 EOF
513     fi
514     exit 1
515 }
516
517 # Avoid locale weirdness, besides we really just want to translate ASCII.
518 toupper(){
519     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
520 }
521
522 tolower(){
523     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
524 }
525
526 c_escape(){
527     echo "$*" | sed 's/["\\]/\\\0/g'
528 }
529
530 sh_quote(){
531     v=$(echo "$1" | sed "s/'/'\\\\''/g")
532     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
533     echo "$v"
534 }
535
536 cleanws(){
537     echo "$@" | sed 's/^ *//;s/[[:space:]][[:space:]]*/ /g;s/ *$//'
538 }
539
540 filter(){
541     pat=$1
542     shift
543     for v; do
544         eval "case '$v' in $pat) printf '%s ' '$v' ;; esac"
545     done
546 }
547
548 filter_out(){
549     pat=$1
550     shift
551     for v; do
552         eval "case '$v' in $pat) ;; *) printf '%s ' '$v' ;; esac"
553     done
554 }
555
556 map(){
557     m=$1
558     shift
559     for v; do eval $m; done
560 }
561
562 add_suffix(){
563     suffix=$1
564     shift
565     for v; do echo ${v}${suffix}; done
566 }
567
568 set_all(){
569     value=$1
570     shift
571     for var in $*; do
572         eval $var=$value
573     done
574 }
575
576 set_weak(){
577     value=$1
578     shift
579     for var; do
580         eval : \${$var:=$value}
581     done
582 }
583
584 sanitize_var_name(){
585     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
586 }
587
588 set_sanitized(){
589     var=$1
590     shift
591     eval $(sanitize_var_name "$var")='$*'
592 }
593
594 get_sanitized(){
595     eval echo \$$(sanitize_var_name "$1")
596 }
597
598 pushvar(){
599     for pvar in $*; do
600         eval level=\${${pvar}_level:=0}
601         eval ${pvar}_${level}="\$$pvar"
602         eval ${pvar}_level=$(($level+1))
603     done
604 }
605
606 popvar(){
607     for pvar in $*; do
608         eval level=\${${pvar}_level:-0}
609         test $level = 0 && continue
610         eval level=$(($level-1))
611         eval $pvar="\${${pvar}_${level}}"
612         eval ${pvar}_level=$level
613         eval unset ${pvar}_${level}
614     done
615 }
616
617 request(){
618     for var in $*; do
619         eval ${var}_requested=yes
620         eval $var=
621     done
622 }
623
624 enable(){
625     set_all yes $*
626 }
627
628 disable(){
629     set_all no $*
630 }
631
632 enable_weak(){
633     set_weak yes $*
634 }
635
636 disable_weak(){
637     set_weak no $*
638 }
639
640 enable_sanitized(){
641     for var; do
642         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
643     done
644 }
645
646 disable_sanitized(){
647     for var; do
648         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
649     done
650 }
651
652 do_enable_deep(){
653     for var; do
654         enabled $var && continue
655         eval sel="\$${var}_select"
656         eval sgs="\$${var}_suggest"
657         pushvar var sgs
658         enable_deep $sel
659         popvar sgs
660         enable_deep_weak $sgs
661         popvar var
662     done
663 }
664
665 enable_deep(){
666     do_enable_deep $*
667     enable $*
668 }
669
670 enable_deep_weak(){
671     for var; do
672         disabled $var && continue
673         pushvar var
674         do_enable_deep $var
675         popvar var
676         enable_weak $var
677     done
678 }
679
680 requested(){
681     test "${1#!}" = "$1" && op='=' || op=!=
682     eval test "x\$${1#!}_requested" $op "xyes"
683 }
684
685 enabled(){
686     test "${1#!}" = "$1" && op='=' || op=!=
687     eval test "x\$${1#!}" $op "xyes"
688 }
689
690 disabled(){
691     test "${1#!}" = "$1" && op='=' || op=!=
692     eval test "x\$${1#!}" $op "xno"
693 }
694
695 enabled_all(){
696     for opt; do
697         enabled $opt || return 1
698     done
699 }
700
701 disabled_all(){
702     for opt; do
703         disabled $opt || return 1
704     done
705 }
706
707 enabled_any(){
708     for opt; do
709         enabled $opt && return 0
710     done
711 }
712
713 disabled_any(){
714     for opt; do
715         disabled $opt && return 0
716     done
717     return 1
718 }
719
720 set_default(){
721     for opt; do
722         eval : \${$opt:=\$${opt}_default}
723     done
724 }
725
726 is_in(){
727     value=$1
728     shift
729     for var in $*; do
730         [ $var = $value ] && return 0
731     done
732     return 1
733 }
734
735 check_deps(){
736     for cfg; do
737         enabled ${cfg}_checking && die "Circular dependency for $cfg."
738         disabled ${cfg}_checking && continue
739         enable ${cfg}_checking
740
741         eval dep_all="\$${cfg}_deps"
742         eval dep_any="\$${cfg}_deps_any"
743         eval dep_con="\$${cfg}_conflict"
744         eval dep_sel="\$${cfg}_select"
745         eval dep_sgs="\$${cfg}_suggest"
746         eval dep_ifa="\$${cfg}_if"
747         eval dep_ifn="\$${cfg}_if_any"
748
749         pushvar cfg dep_all dep_any dep_con dep_sel dep_sgs dep_ifa dep_ifn
750         check_deps $dep_all $dep_any $dep_con $dep_sel $dep_sgs $dep_ifa $dep_ifn
751         popvar cfg dep_all dep_any dep_con dep_sel dep_sgs dep_ifa dep_ifn
752
753         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
754         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
755         enabled_all  $dep_all || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but not all dependencies are satisfied: $dep_all"; }
756         enabled_any  $dep_any || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but not any dependency is satisfied: $dep_any"; }
757         disabled_all $dep_con || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but some conflicting dependencies are unsatisfied: $dep_con"; }
758         disabled_any $dep_sel && { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but some selected dependency is unsatisfied: $dep_sel"; }
759
760         enabled $cfg && enable_deep_weak $dep_sel $dep_sgs
761
762         for dep in $dep_all $dep_any $dep_sel $dep_sgs; do
763             # filter out library deps, these do not belong in extralibs
764             is_in $dep $LIBRARY_LIST && continue
765             enabled $dep && eval append ${cfg}_extralibs ${dep}_extralibs
766         done
767
768         disable ${cfg}_checking
769     done
770 }
771
772 print_config(){
773     pfx=$1
774     files=$2
775     shift 2
776     map 'eval echo "$v \${$v:-no}"' "$@" |
777     awk "BEGIN { split(\"$files\", files) }
778         {
779             c = \"$pfx\" toupper(\$1);
780             v = \$2;
781             sub(/yes/, 1, v);
782             sub(/no/,  0, v);
783             for (f in files) {
784                 file = files[f];
785                 if (file ~ /\\.h\$/) {
786                     printf(\"#define %s %d\\n\", c, v) >>file;
787                 } else if (file ~ /\\.asm\$/) {
788                     printf(\"%%define %s %d\\n\", c, v) >>file;
789                 } else if (file ~ /\\.mak\$/) {
790                     n = -v ? \"\" : \"!\";
791                     printf(\"%s%s=yes\\n\", n, c) >>file;
792                 } else if (file ~ /\\.texi\$/) {
793                     pre = -v ? \"\" : \"@c \";
794                     yesno = \$2;
795                     c2 = tolower(c);
796                     gsub(/_/, \"-\", c2);
797                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
798                 }
799             }
800         }"
801 }
802
803 print_enabled(){
804     suf=$1
805     shift
806     for v; do
807         enabled $v && printf "%s\n" ${v%$suf}
808     done
809 }
810
811 append(){
812     var=$1
813     shift
814     eval "$var=\"\$$var $*\""
815 }
816
817 prepend(){
818     var=$1
819     shift
820     eval "$var=\"$* \$$var\""
821 }
822
823 unique(){
824     var=$1
825     uniq_list=""
826     for tok in $(eval echo \$$var); do
827         uniq_list="$(filter_out $tok $uniq_list) $tok"
828     done
829     eval "$var=\"${uniq_list}\""
830 }
831
832 resolve(){
833     var=$1
834     tmpvar=
835     for entry in $(eval echo \$$var); do
836         tmpvar="$tmpvar $(eval echo \$${entry})"
837     done
838     eval "$var=\"${tmpvar}\""
839 }
840
841 add_cppflags(){
842     append CPPFLAGS "$@"
843 }
844
845 add_cflags(){
846     append CFLAGS $($cflags_filter "$@")
847 }
848
849 add_cflags_headers(){
850     append CFLAGS_HEADERS $($cflags_filter "$@")
851 }
852
853 add_cxxflags(){
854     append CXXFLAGS $($cflags_filter "$@")
855 }
856
857 add_asflags(){
858     append ASFLAGS $($asflags_filter "$@")
859 }
860
861 add_objcflags(){
862     append OBJCFLAGS $($objcflags_filter "$@")
863 }
864
865 add_ldflags(){
866     append LDFLAGS $($ldflags_filter "$@")
867 }
868
869 add_ldexeflags(){
870     append LDEXEFLAGS $($ldflags_filter "$@")
871 }
872
873 add_ldsoflags(){
874     append LDSOFLAGS $($ldflags_filter "$@")
875 }
876
877 add_stripflags(){
878     append ASMSTRIPFLAGS "$@"
879 }
880
881 add_extralibs(){
882     prepend extralibs $($ldflags_filter "$@")
883 }
884
885 add_host_cppflags(){
886     append host_cppflags "$@"
887 }
888
889 add_host_cflags(){
890     append host_cflags $($host_cflags_filter "$@")
891 }
892
893 add_host_ldflags(){
894     append host_ldflags $($host_ldflags_filter "$@")
895 }
896
897 add_compat(){
898     append compat_objs $1
899     shift
900     map 'add_cppflags -D$v' "$@"
901 }
902
903 check_cmd(){
904     log "$@"
905     "$@" >> $logfile 2>&1
906 }
907
908 check_stat(){
909     log check_stat "$@"
910     stat "$1" >> $logfile 2>&1
911 }
912
913 cc_o(){
914     eval printf '%s\\n' $CC_O
915 }
916
917 cc_e(){
918     eval printf '%s\\n' $CC_E
919 }
920
921 check_cc(){
922     log check_cc "$@"
923     cat > $TMPC
924     log_file $TMPC
925     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
926 }
927
928 check_cxx(){
929     log check_cxx "$@"
930     cat > $TMPCPP
931     log_file $TMPCPP
932     check_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
933 }
934
935 check_objcc(){
936     log check_objcc "$@"
937     cat > $TMPM
938     log_file $TMPM
939     check_cmd $objcc -Werror=missing-prototypes $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPM
940 }
941
942 check_cpp(){
943     log check_cpp "$@"
944     cat > $TMPC
945     log_file $TMPC
946     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
947 }
948
949 as_o(){
950     eval printf '%s\\n' $AS_O
951 }
952
953 check_as(){
954     log check_as "$@"
955     cat > $TMPS
956     log_file $TMPS
957     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
958 }
959
960 check_inline_asm(){
961     log check_inline_asm "$@"
962     name="$1"
963     code="$2"
964     shift 2
965     disable $name
966     check_cc "$@" <<EOF && enable $name
967 void foo(void){ __asm__ volatile($code); }
968 EOF
969 }
970
971 check_inline_asm_flags(){
972     log check_inline_asm_flags "$@"
973     name="$1"
974     code="$2"
975     flags=''
976     shift 2
977     while [ "$1" != "" ]; do
978       append flags $1
979       shift
980     done;
981     disable $name
982     cat > $TMPC <<EOF
983 void foo(void){ __asm__ volatile($code); }
984 EOF
985     log_file $TMPC
986     check_cmd $cc $CPPFLAGS $CFLAGS $flags "$@" $CC_C $(cc_o $TMPO) $TMPC &&
987     enable $name && add_cflags $flags && add_asflags $flags && add_ldflags $flags
988 }
989
990 check_insn(){
991     log check_insn "$@"
992     check_inline_asm ${1}_inline "\"$2\""
993     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
994 }
995
996 check_x86asm(){
997     log check_x86asm "$@"
998     echo "$1" > $TMPS
999     log_file $TMPS
1000     shift 1
1001     check_cmd $x86asmexe $X86ASMFLAGS -Werror "$@" -o $TMPO $TMPS
1002 }
1003
1004 ld_o(){
1005     eval printf '%s\\n' $LD_O
1006 }
1007
1008 check_ld(){
1009     log check_ld "$@"
1010     type=$1
1011     shift 1
1012     flags=$(filter_out '-l*|*.so' $@)
1013     libs=$(filter '-l*|*.so' $@)
1014     check_$type $($cflags_filter $flags) || return
1015     flags=$($ldflags_filter $flags)
1016     libs=$($ldflags_filter $libs)
1017     check_cmd $ld $LDFLAGS $LDEXEFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
1018 }
1019
1020 print_include(){
1021     hdr=$1
1022     test "${hdr%.h}" = "${hdr}" &&
1023         echo "#include $hdr"    ||
1024         echo "#include <$hdr>"
1025 }
1026
1027 check_code(){
1028     log check_code "$@"
1029     check=$1
1030     headers=$2
1031     code=$3
1032     shift 3
1033     {
1034         for hdr in $headers; do
1035             print_include $hdr
1036         done
1037         echo "int main(void) { $code; return 0; }"
1038     } | check_$check "$@"
1039 }
1040
1041 check_cppflags(){
1042     log check_cppflags "$@"
1043     check_cpp "$@" <<EOF && append CPPFLAGS "$@"
1044 #include <stdlib.h>
1045 EOF
1046 }
1047
1048 test_cflags(){
1049     log test_cflags "$@"
1050     set -- $($cflags_filter "$@")
1051     check_cc "$@" <<EOF
1052 int x;
1053 EOF
1054 }
1055
1056 check_cflags(){
1057     log check_cflags "$@"
1058     test_cflags "$@" && add_cflags "$@"
1059 }
1060
1061 check_cxxflags(){
1062     log check_cxxflags "$@"
1063     set -- $($cflags_filter "$@")
1064     check_cxx "$@" <<EOF && append CXXFLAGS "$@"
1065 int x;
1066 EOF
1067 }
1068
1069 test_objcflags(){
1070     log test_objcflags "$@"
1071     set -- $($objcflags_filter "$@")
1072     check_objcc "$@" <<EOF
1073 int x;
1074 EOF
1075 }
1076
1077 check_objcflags(){
1078     log check_objcflags "$@"
1079     test_objcflags "$@" && add_objcflags "$@"
1080 }
1081
1082 test_ldflags(){
1083     log test_ldflags "$@"
1084     check_ld "cc" "$@" <<EOF
1085 int main(void){ return 0; }
1086 EOF
1087 }
1088
1089 check_ldflags(){
1090     log check_ldflags "$@"
1091     test_ldflags "$@" && add_ldflags "$@"
1092 }
1093
1094 test_stripflags(){
1095     log test_stripflags "$@"
1096     # call check_cc to get a fresh TMPO
1097     check_cc <<EOF
1098 int main(void) { return 0; }
1099 EOF
1100     check_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
1101 }
1102
1103 check_stripflags(){
1104     log check_stripflags "$@"
1105     test_stripflags "$@" && add_stripflags "$@"
1106 }
1107
1108 check_header(){
1109     log check_header "$@"
1110     headers=$1
1111     shift
1112     disable_sanitized $headers
1113     {
1114         for hdr in $headers; do
1115             print_include $hdr
1116         done
1117         echo "int x;"
1118     } | check_cpp "$@" && enable_sanitized $headers
1119 }
1120
1121 check_header_objcc(){
1122     log check_header_objcc "$@"
1123     rm -f -- "$TMPO"
1124     header=$1
1125     shift
1126     disable_sanitized $header
1127     {
1128        echo "#include <$header>"
1129        echo "int main(void) { return 0; }"
1130     } | check_objcc && check_stat "$TMPO" && enable_sanitized $header
1131 }
1132
1133 check_apple_framework(){
1134     log check_apple_framework "$@"
1135     framework="$1"
1136     name="$(tolower $framework)"
1137     header="${framework}/${framework}.h"
1138     disable $name
1139     check_header_objcc $header &&
1140         enable $name && eval ${name}_extralibs='"-framework $framework"'
1141 }
1142
1143 check_func(){
1144     log check_func "$@"
1145     func=$1
1146     shift
1147     disable $func
1148     check_ld "cc" "$@" <<EOF && enable $func
1149 extern int $func();
1150 int main(void){ $func(); }
1151 EOF
1152 }
1153
1154 check_complexfunc(){
1155     log check_complexfunc "$@"
1156     func=$1
1157     narg=$2
1158     shift 2
1159     test $narg = 2 && args="f, g" || args="f * I"
1160     disable $func
1161     check_ld "cc" "$@" <<EOF && enable $func
1162 #include <complex.h>
1163 #include <math.h>
1164 float foo(complex float f, complex float g) { return $func($args); }
1165 int main(void){ return (int) foo; }
1166 EOF
1167 }
1168
1169 check_mathfunc(){
1170     log check_mathfunc "$@"
1171     func=$1
1172     narg=$2
1173     shift 2
1174     test $narg = 2 && args="f, g" || args="f"
1175     disable $func
1176     check_ld "cc" "$@" <<EOF && enable $func
1177 #include <math.h>
1178 float foo(float f, float g) { return $func($args); }
1179 int main(void){ return (int) foo; }
1180 EOF
1181 }
1182
1183 check_func_headers(){
1184     log check_func_headers "$@"
1185     headers=$1
1186     funcs=$2
1187     shift 2
1188     {
1189         for hdr in $headers; do
1190             print_include $hdr
1191         done
1192         echo "#include <stdint.h>"
1193         for func in $funcs; do
1194             echo "long check_$func(void) { return (long) $func; }"
1195         done
1196         echo "int main(void) { int ret = 0;"
1197         # LTO could optimize out the test functions without this
1198         for func in $funcs; do
1199             echo " ret |= ((intptr_t)check_$func) & 0xFFFF;"
1200         done
1201         echo "return ret; }"
1202     } | check_ld "cc" "$@" && enable $funcs && enable_sanitized $headers
1203 }
1204
1205 check_class_headers_cpp(){
1206     log check_class_headers_cpp "$@"
1207     headers=$1
1208     classes=$2
1209     shift 2
1210     {
1211         for hdr in $headers; do
1212             echo "#include <$hdr>"
1213         done
1214         echo "int main(void) { "
1215         i=1
1216         for class in $classes; do
1217             echo "$class obj$i;"
1218             i=$(expr $i + 1)
1219         done
1220         echo "return 0; }"
1221     } | check_ld "cxx" "$@" && enable $funcs && enable_sanitized $headers
1222 }
1223
1224 check_cpp_condition(){
1225     log check_cpp_condition "$@"
1226     header=$1
1227     condition=$2
1228     shift 2
1229     check_cpp "$@" <<EOF
1230 #include <$header>
1231 #if !($condition)
1232 #error "unsatisfied condition: $condition"
1233 #endif
1234 EOF
1235 }
1236
1237 test_cflags_cc(){
1238     log test_cflags_cc "$@"
1239     flags=$1
1240     header=$2
1241     condition=$3
1242     shift 3
1243     set -- $($cflags_filter "$flags")
1244     check_cc "$@" <<EOF
1245 #include <$header>
1246 #if !($condition)
1247 #error "unsatisfied condition: $condition"
1248 #endif
1249 EOF
1250 }
1251
1252 check_lib(){
1253     log check_lib "$@"
1254     name="$1"
1255     headers="$2"
1256     funcs="$3"
1257     shift 3
1258     disable $name
1259     check_func_headers "$headers" "$funcs" "$@" &&
1260         enable $name && eval ${name}_extralibs="\$@"
1261 }
1262
1263 check_lib_cpp(){
1264     log check_lib_cpp "$@"
1265     name="$1"
1266     headers="$2"
1267     classes="$3"
1268     shift 3
1269     disable $name
1270     check_class_headers_cpp "$headers" "$classes" "$@" &&
1271         enable $name && eval ${name}_extralibs="\$@"
1272 }
1273
1274 test_pkg_config(){
1275     log test_pkg_config "$@"
1276     name="$1"
1277     pkg_version="$2"
1278     pkg="${2%% *}"
1279     headers="$3"
1280     funcs="$4"
1281     shift 4
1282     disable $name
1283     check_cmd $pkg_config --exists --print-errors $pkg_version || return
1284     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1285     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1286     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1287         enable $name &&
1288         set_sanitized "${name}_cflags"    $pkg_cflags &&
1289         set_sanitized "${name}_extralibs" $pkg_libs
1290 }
1291
1292 check_pkg_config(){
1293     log check_pkg_config "$@"
1294     name="$1"
1295     test_pkg_config "$@" &&
1296         eval add_cflags \$${name}_cflags
1297 }
1298
1299 check_exec(){
1300     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1301 }
1302
1303 check_exec_crash(){
1304     log check_exec_crash "$@"
1305     code=$(cat)
1306
1307     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1308     # are safe but may not be available everywhere.  Thus we use
1309     # raise(SIGTERM) instead.  The check is run in a subshell so we
1310     # can redirect the "Terminated" message from the shell.  SIGBUS
1311     # is not defined by standard C so it is used conditionally.
1312
1313     (check_exec "$@") >> $logfile 2>&1 <<EOF
1314 #include <signal.h>
1315 static void sighandler(int sig){
1316     raise(SIGTERM);
1317 }
1318 int foo(void){
1319     $code
1320 }
1321 int (*func_ptr)(void) = foo;
1322 int main(void){
1323     signal(SIGILL, sighandler);
1324     signal(SIGFPE, sighandler);
1325     signal(SIGSEGV, sighandler);
1326 #ifdef SIGBUS
1327     signal(SIGBUS, sighandler);
1328 #endif
1329     return func_ptr();
1330 }
1331 EOF
1332 }
1333
1334 check_type(){
1335     log check_type "$@"
1336     headers=$1
1337     type=$2
1338     shift 2
1339     disable_sanitized "$type"
1340     check_code cc "$headers" "$type v" "$@" && enable_sanitized "$type"
1341 }
1342
1343 check_struct(){
1344     log check_struct "$@"
1345     headers=$1
1346     struct=$2
1347     member=$3
1348     shift 3
1349     disable_sanitized "${struct}_${member}"
1350     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1351         enable_sanitized "${struct}_${member}"
1352 }
1353
1354 check_builtin(){
1355     log check_builtin "$@"
1356     name=$1
1357     headers=$2
1358     builtin=$3
1359     shift 3
1360     disable "$name"
1361     check_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1362 }
1363
1364 check_compile_assert(){
1365     log check_compile_assert "$@"
1366     name=$1
1367     headers=$2
1368     condition=$3
1369     shift 3
1370     disable "$name"
1371     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1372 }
1373
1374 require(){
1375     log require "$@"
1376     name_version="$1"
1377     name="${1%% *}"
1378     headers="$2"
1379     func="$3"
1380     shift 3
1381     check_lib $name "$headers" $func "$@" || die "ERROR: $name_version not found"
1382 }
1383
1384 require_cpp(){
1385     name="$1"
1386     headers="$2"
1387     classes="$3"
1388     shift 3
1389     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1390 }
1391
1392 require_header(){
1393     log require "$@"
1394     headers="$1"
1395     shift
1396     check_header "$headers" "$@" || die "ERROR: $headers not found"
1397 }
1398
1399 require_cpp_condition(){
1400     log require "$@"
1401     header="$1"
1402     condition="$2"
1403     shift 2
1404     check_cpp_condition "$header" "$condition" "$@" || die "ERROR: $condition not satisfied"
1405 }
1406
1407 require_pkg_config(){
1408     log require_pkg_config "$@"
1409     pkg_version="$2"
1410     check_pkg_config "$@" || die "ERROR: $pkg_version not found using pkg-config$pkg_config_fail_message"
1411 }
1412
1413 hostcc_e(){
1414     eval printf '%s\\n' $HOSTCC_E
1415 }
1416
1417 hostcc_o(){
1418     eval printf '%s\\n' $HOSTCC_O
1419 }
1420
1421 check_host_cc(){
1422     log check_host_cc "$@"
1423     cat > $TMPC
1424     log_file $TMPC
1425     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1426 }
1427
1428 check_host_cpp(){
1429     log check_host_cpp "$@"
1430     cat > $TMPC
1431     log_file $TMPC
1432     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1433 }
1434
1435 check_host_cppflags(){
1436     log check_host_cppflags "$@"
1437     check_host_cpp "$@" <<EOF && append host_cppflags "$@"
1438 #include <stdlib.h>
1439 EOF
1440 }
1441
1442 check_host_cflags(){
1443     log check_host_cflags "$@"
1444     set -- $($host_cflags_filter "$@")
1445     check_host_cc "$@" <<EOF && append host_cflags "$@"
1446 int x;
1447 EOF
1448 }
1449
1450 check_host_cpp_condition(){
1451     log check_host_cpp_condition "$@"
1452     header=$1
1453     condition=$2
1454     shift 2
1455     check_host_cpp "$@" <<EOF
1456 #include <$header>
1457 #if !($condition)
1458 #error "unsatisfied condition: $condition"
1459 #endif
1460 EOF
1461 }
1462
1463 cp_if_changed(){
1464     cmp -s "$1" "$2" && { test "$quiet" != "yes" && echo "$2 is unchanged"; } && return
1465     mkdir -p "$(dirname $2)"
1466     cp -f "$1" "$2"
1467 }
1468
1469 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1470 # system-dependent things.
1471
1472 AVCODEC_COMPONENTS="
1473     bsfs
1474     decoders
1475     encoders
1476     hwaccels
1477     parsers
1478 "
1479
1480 AVDEVICE_COMPONENTS="
1481     indevs
1482     outdevs
1483 "
1484
1485 AVFILTER_COMPONENTS="
1486     filters
1487 "
1488
1489 AVFORMAT_COMPONENTS="
1490     demuxers
1491     muxers
1492     protocols
1493 "
1494
1495 COMPONENT_LIST="
1496     $AVCODEC_COMPONENTS
1497     $AVDEVICE_COMPONENTS
1498     $AVFILTER_COMPONENTS
1499     $AVFORMAT_COMPONENTS
1500 "
1501
1502 EXAMPLE_LIST="
1503     avio_dir_cmd_example
1504     avio_reading_example
1505     decode_audio_example
1506     decode_video_example
1507     demuxing_decoding_example
1508     encode_audio_example
1509     encode_video_example
1510     extract_mvs_example
1511     filter_audio_example
1512     filtering_audio_example
1513     filtering_video_example
1514     http_multiclient_example
1515     hw_decode_example
1516     metadata_example
1517     muxing_example
1518     qsvdec_example
1519     remuxing_example
1520     resampling_audio_example
1521     scaling_video_example
1522     transcode_aac_example
1523     transcoding_example
1524 "
1525
1526 EXTERNAL_AUTODETECT_LIBRARY_LIST="
1527     alsa
1528     appkit
1529     avfoundation
1530     bzlib
1531     coreimage
1532     iconv
1533     libxcb
1534     libxcb_shm
1535     libxcb_shape
1536     libxcb_xfixes
1537     lzma
1538     schannel
1539     sdl2
1540     securetransport
1541     sndio
1542     xlib
1543     zlib
1544 "
1545
1546 EXTERNAL_LIBRARY_GPL_LIST="
1547     avisynth
1548     frei0r
1549     libcdio
1550     librubberband
1551     libvidstab
1552     libx264
1553     libx265
1554     libxavs
1555     libxvid
1556 "
1557
1558 EXTERNAL_LIBRARY_NONFREE_LIST="
1559     decklink
1560     libndi_newtek
1561     libfdk_aac
1562     openssl
1563 "
1564
1565 EXTERNAL_LIBRARY_VERSION3_LIST="
1566     gmp
1567     libopencore_amrnb
1568     libopencore_amrwb
1569     libvmaf
1570     libvo_amrwbenc
1571     rkmpp
1572 "
1573
1574 EXTERNAL_LIBRARY_GPLV3_LIST="
1575     libsmbclient
1576 "
1577
1578 EXTERNAL_LIBRARY_LIST="
1579     $EXTERNAL_LIBRARY_GPL_LIST
1580     $EXTERNAL_LIBRARY_NONFREE_LIST
1581     $EXTERNAL_LIBRARY_VERSION3_LIST
1582     $EXTERNAL_LIBRARY_GPLV3_LIST
1583     chromaprint
1584     gcrypt
1585     gnutls
1586     jni
1587     ladspa
1588     libass
1589     libbluray
1590     libbs2b
1591     libcaca
1592     libcelt
1593     libdc1394
1594     libdrm
1595     libflite
1596     libfontconfig
1597     libfreetype
1598     libfribidi
1599     libgme
1600     libgsm
1601     libiec61883
1602     libilbc
1603     libjack
1604     libkvazaar
1605     libmodplug
1606     libmp3lame
1607     libmysofa
1608     libopencv
1609     libopenh264
1610     libopenjpeg
1611     libopenmpt
1612     libopus
1613     libpulse
1614     librsvg
1615     librtmp
1616     libshine
1617     libsmbclient
1618     libsnappy
1619     libsoxr
1620     libspeex
1621     libssh
1622     libtesseract
1623     libtheora
1624     libtwolame
1625     libv4l2
1626     libvorbis
1627     libvpx
1628     libwavpack
1629     libwebp
1630     libxml2
1631     libzimg
1632     libzmq
1633     libzvbi
1634     mediacodec
1635     openal
1636     opencl
1637     opengl
1638 "
1639
1640 HWACCEL_AUTODETECT_LIBRARY_LIST="
1641     audiotoolbox
1642     crystalhd
1643     cuda
1644     cuvid
1645     d3d11va
1646     dxva2
1647     nvdec
1648     nvenc
1649     vaapi
1650     vdpau
1651     videotoolbox
1652     v4l2_m2m
1653     xvmc
1654 "
1655
1656 # catchall list of things that require external libs to link
1657 EXTRALIBS_LIST="
1658     cpu_init
1659     cws2fws
1660 "
1661
1662 HWACCEL_LIBRARY_NONFREE_LIST="
1663     cuda_sdk
1664     libnpp
1665 "
1666
1667 HWACCEL_LIBRARY_LIST="
1668     $HWACCEL_LIBRARY_NONFREE_LIST
1669     libmfx
1670     mmal
1671     omx
1672 "
1673
1674 DOCUMENT_LIST="
1675     doc
1676     htmlpages
1677     manpages
1678     podpages
1679     txtpages
1680 "
1681
1682 FEATURE_LIST="
1683     ftrapv
1684     gray
1685     hardcoded_tables
1686     omx_rpi
1687     runtime_cpudetect
1688     safe_bitstream_reader
1689     shared
1690     small
1691     static
1692     swscale_alpha
1693 "
1694
1695 LIBRARY_LIST="
1696     avcodec
1697     avdevice
1698     avfilter
1699     avformat
1700     avresample
1701     avutil
1702     postproc
1703     swresample
1704     swscale
1705 "
1706
1707 LICENSE_LIST="
1708     gpl
1709     nonfree
1710     version3
1711 "
1712
1713 PROGRAM_LIST="
1714     ffplay
1715     ffprobe
1716     ffserver
1717     ffmpeg
1718 "
1719
1720 SUBSYSTEM_LIST="
1721     dct
1722     dwt
1723     error_resilience
1724     faan
1725     fast_unaligned
1726     fft
1727     lsp
1728     lzo
1729     mdct
1730     pixelutils
1731     network
1732     rdft
1733 "
1734
1735 # COMPONENT_LIST needs to come last to ensure correct dependency checking
1736 CONFIG_LIST="
1737     $DOCUMENT_LIST
1738     $EXAMPLE_LIST
1739     $EXTERNAL_LIBRARY_LIST
1740     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1741     $HWACCEL_LIBRARY_LIST
1742     $HWACCEL_AUTODETECT_LIBRARY_LIST
1743     $FEATURE_LIST
1744     $LICENSE_LIST
1745     $LIBRARY_LIST
1746     $PROGRAM_LIST
1747     $SUBSYSTEM_LIST
1748     autodetect
1749     fontconfig
1750     linux_perf
1751     memory_poisoning
1752     neon_clobber_test
1753     ossfuzz
1754     pic
1755     thumb
1756     valgrind_backtrace
1757     xmm_clobber_test
1758     $COMPONENT_LIST
1759 "
1760
1761 THREADS_LIST="
1762     pthreads
1763     os2threads
1764     w32threads
1765 "
1766
1767 ATOMICS_LIST="
1768     atomics_gcc
1769     atomics_suncc
1770     atomics_win32
1771 "
1772
1773 AUTODETECT_LIBS="
1774     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1775     $HWACCEL_AUTODETECT_LIBRARY_LIST
1776     $THREADS_LIST
1777 "
1778
1779 ARCH_LIST="
1780     aarch64
1781     alpha
1782     arm
1783     avr32
1784     avr32_ap
1785     avr32_uc
1786     bfin
1787     ia64
1788     m68k
1789     mips
1790     mips64
1791     parisc
1792     ppc
1793     ppc64
1794     s390
1795     sh4
1796     sparc
1797     sparc64
1798     tilegx
1799     tilepro
1800     tomi
1801     x86
1802     x86_32
1803     x86_64
1804 "
1805
1806 ARCH_EXT_LIST_ARM="
1807     armv5te
1808     armv6
1809     armv6t2
1810     armv8
1811     neon
1812     vfp
1813     vfpv3
1814     setend
1815 "
1816
1817 ARCH_EXT_LIST_MIPS="
1818     mipsfpu
1819     mips32r2
1820     mips32r5
1821     mips64r2
1822     mips32r6
1823     mips64r6
1824     mipsdsp
1825     mipsdspr2
1826     msa
1827 "
1828
1829 ARCH_EXT_LIST_LOONGSON="
1830     loongson2
1831     loongson3
1832     mmi
1833 "
1834
1835 ARCH_EXT_LIST_X86_SIMD="
1836     aesni
1837     amd3dnow
1838     amd3dnowext
1839     avx
1840     avx2
1841     fma3
1842     fma4
1843     mmx
1844     mmxext
1845     sse
1846     sse2
1847     sse3
1848     sse4
1849     sse42
1850     ssse3
1851     xop
1852 "
1853
1854 ARCH_EXT_LIST_PPC="
1855     altivec
1856     dcbzl
1857     ldbrx
1858     power8
1859     ppc4xx
1860     vsx
1861 "
1862
1863 ARCH_EXT_LIST_X86="
1864     $ARCH_EXT_LIST_X86_SIMD
1865     cpunop
1866     i686
1867 "
1868
1869 ARCH_EXT_LIST="
1870     $ARCH_EXT_LIST_ARM
1871     $ARCH_EXT_LIST_PPC
1872     $ARCH_EXT_LIST_X86
1873     $ARCH_EXT_LIST_MIPS
1874     $ARCH_EXT_LIST_LOONGSON
1875 "
1876
1877 ARCH_FEATURES="
1878     aligned_stack
1879     fast_64bit
1880     fast_clz
1881     fast_cmov
1882     local_aligned
1883     simd_align_16
1884     simd_align_32
1885 "
1886
1887 BUILTIN_LIST="
1888     atomic_cas_ptr
1889     machine_rw_barrier
1890     MemoryBarrier
1891     mm_empty
1892     rdtsc
1893     sarestart
1894     sem_timedwait
1895     sync_val_compare_and_swap
1896 "
1897 HAVE_LIST_CMDLINE="
1898     inline_asm
1899     symver
1900     x86asm
1901 "
1902
1903 HAVE_LIST_PUB="
1904     bigendian
1905     fast_unaligned
1906 "
1907
1908 HEADERS_LIST="
1909     arpa_inet_h
1910     asm_types_h
1911     cdio_paranoia_h
1912     cdio_paranoia_paranoia_h
1913     cuda_h
1914     dispatch_dispatch_h
1915     dev_bktr_ioctl_bt848_h
1916     dev_bktr_ioctl_meteor_h
1917     dev_ic_bt8xx_h
1918     dev_video_bktr_ioctl_bt848_h
1919     dev_video_meteor_ioctl_meteor_h
1920     direct_h
1921     dirent_h
1922     dxgidebug_h
1923     dxva_h
1924     ES2_gl_h
1925     gsm_h
1926     io_h
1927     machine_ioctl_bt848_h
1928     machine_ioctl_meteor_h
1929     malloc_h
1930     opencv2_core_core_c_h
1931     OpenGL_gl3_h
1932     poll_h
1933     sys_param_h
1934     sys_resource_h
1935     sys_select_h
1936     sys_soundcard_h
1937     sys_time_h
1938     sys_un_h
1939     sys_videoio_h
1940     termios_h
1941     udplite_h
1942     unistd_h
1943     valgrind_valgrind_h
1944     windows_h
1945     winsock2_h
1946 "
1947
1948 INTRINSICS_LIST="
1949     intrinsics_neon
1950 "
1951
1952 COMPLEX_FUNCS="
1953     cabs
1954     cexp
1955 "
1956
1957 MATH_FUNCS="
1958     atanf
1959     atan2f
1960     cbrt
1961     cbrtf
1962     copysign
1963     cosf
1964     erf
1965     exp2
1966     exp2f
1967     expf
1968     hypot
1969     isfinite
1970     isinf
1971     isnan
1972     ldexpf
1973     llrint
1974     llrintf
1975     log2
1976     log2f
1977     log10f
1978     lrint
1979     lrintf
1980     powf
1981     rint
1982     round
1983     roundf
1984     sinf
1985     trunc
1986     truncf
1987 "
1988
1989 SYSTEM_FUNCS="
1990     access
1991     aligned_malloc
1992     arc4random
1993     clock_gettime
1994     closesocket
1995     CommandLineToArgvW
1996     fcntl
1997     getaddrinfo
1998     gethrtime
1999     getopt
2000     GetProcessAffinityMask
2001     GetProcessMemoryInfo
2002     GetProcessTimes
2003     getrusage
2004     GetSystemTimeAsFileTime
2005     gettimeofday
2006     glob
2007     glXGetProcAddress
2008     gmtime_r
2009     inet_aton
2010     isatty
2011     kbhit
2012     localtime_r
2013     lstat
2014     lzo1x_999_compress
2015     mach_absolute_time
2016     MapViewOfFile
2017     memalign
2018     mkstemp
2019     mmap
2020     mprotect
2021     nanosleep
2022     PeekNamedPipe
2023     posix_memalign
2024     pthread_cancel
2025     sched_getaffinity
2026     SetConsoleTextAttribute
2027     SetConsoleCtrlHandler
2028     setmode
2029     setrlimit
2030     Sleep
2031     strerror_r
2032     sysconf
2033     sysctl
2034     usleep
2035     UTGetOSTypeFromString
2036     VirtualAlloc
2037     wglGetProcAddress
2038 "
2039
2040 TOOLCHAIN_FEATURES="
2041     as_arch_directive
2042     as_fpu_directive
2043     as_func
2044     as_object_arch
2045     asm_mod_q
2046     blocks_extension
2047     ebp_available
2048     ebx_available
2049     gnu_as
2050     gnu_windres
2051     ibm_asm
2052     inline_asm_direct_symbol_refs
2053     inline_asm_labels
2054     inline_asm_nonlocal_labels
2055     pragma_deprecated
2056     rsync_contimeout
2057     symver_asm_label
2058     symver_gnu_asm
2059     vfp_args
2060     xform_asm
2061     xmm_clobbers
2062 "
2063
2064 TYPES_LIST="
2065     CONDITION_VARIABLE_Ptr
2066     kCMVideoCodecType_HEVC
2067     socklen_t
2068     struct_addrinfo
2069     struct_group_source_req
2070     struct_ip_mreq_source
2071     struct_ipv6_mreq
2072     struct_msghdr_msg_flags
2073     struct_pollfd
2074     struct_rusage_ru_maxrss
2075     struct_sctp_event_subscribe
2076     struct_sockaddr_in6
2077     struct_sockaddr_sa_len
2078     struct_sockaddr_storage
2079     struct_stat_st_mtim_tv_nsec
2080     struct_v4l2_frmivalenum_discrete
2081 "
2082
2083 HAVE_LIST="
2084     $ARCH_EXT_LIST
2085     $(add_suffix _external $ARCH_EXT_LIST)
2086     $(add_suffix _inline   $ARCH_EXT_LIST)
2087     $ARCH_FEATURES
2088     $ATOMICS_LIST
2089     $BUILTIN_LIST
2090     $COMPLEX_FUNCS
2091     $HAVE_LIST_CMDLINE
2092     $HAVE_LIST_PUB
2093     $HEADERS_LIST
2094     $INTRINSICS_LIST
2095     $MATH_FUNCS
2096     $SYSTEM_FUNCS
2097     $THREADS_LIST
2098     $TOOLCHAIN_FEATURES
2099     $TYPES_LIST
2100     atomics_native
2101     dos_paths
2102     libc_msvcrt
2103     makeinfo
2104     makeinfo_html
2105     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
2106     perl
2107     pod2man
2108     section_data_rel_ro
2109     texi2html
2110     threads
2111     uwp
2112     vaapi_drm
2113     vaapi_x11
2114     vdpau_x11
2115     winrt
2116     wincrypt
2117 "
2118
2119 # options emitted with CONFIG_ prefix but not available on the command line
2120 CONFIG_EXTRA="
2121     aandcttables
2122     ac3dsp
2123     adts_header
2124     audio_frame_queue
2125     audiodsp
2126     blockdsp
2127     bswapdsp
2128     cabac
2129     cbs
2130     cbs_h264
2131     cbs_h265
2132     cbs_mpeg2
2133     dirac_parse
2134     dvprofile
2135     exif
2136     faandct
2137     faanidct
2138     fdctdsp
2139     flacdsp
2140     fmtconvert
2141     frame_thread_encoder
2142     g722dsp
2143     golomb
2144     gplv3
2145     h263dsp
2146     h264chroma
2147     h264dsp
2148     h264parse
2149     h264pred
2150     h264qpel
2151     hevcparse
2152     hpeldsp
2153     huffman
2154     huffyuvdsp
2155     huffyuvencdsp
2156     idctdsp
2157     iirfilter
2158     mdct15
2159     intrax8
2160     iso_media
2161     ividsp
2162     jpegtables
2163     lgplv3
2164     libx262
2165     llauddsp
2166     llviddsp
2167     llvidencdsp
2168     lpc
2169     lzf
2170     me_cmp
2171     mpeg_er
2172     mpegaudio
2173     mpegaudiodsp
2174     mpegaudioheader
2175     mpegvideo
2176     mpegvideoenc
2177     mss34dsp
2178     pixblockdsp
2179     qpeldsp
2180     qsv
2181     qsvdec
2182     qsvenc
2183     qsvvpp
2184     rangecoder
2185     riffdec
2186     riffenc
2187     rtpdec
2188     rtpenc_chain
2189     rv34dsp
2190     sinewin
2191     snappy
2192     srtp
2193     startcode
2194     texturedsp
2195     texturedspenc
2196     tpeldsp
2197     vaapi_1
2198     vaapi_encode
2199     vc1dsp
2200     videodsp
2201     vp3dsp
2202     vp56dsp
2203     vp8dsp
2204     wma_freqs
2205     wmv2dsp
2206 "
2207
2208 CMDLINE_SELECT="
2209     $ARCH_EXT_LIST
2210     $CONFIG_LIST
2211     $HAVE_LIST_CMDLINE
2212     $THREADS_LIST
2213     asm
2214     cross_compile
2215     debug
2216     extra_warnings
2217     logging
2218     lto
2219     optimizations
2220     rpath
2221     stripping
2222 "
2223
2224 PATHS_LIST="
2225     bindir
2226     datadir
2227     docdir
2228     incdir
2229     libdir
2230     mandir
2231     pkgconfigdir
2232     prefix
2233     shlibdir
2234     install_name_dir
2235 "
2236
2237 CMDLINE_SET="
2238     $PATHS_LIST
2239     ar
2240     arch
2241     as
2242     assert_level
2243     build_suffix
2244     cc
2245     objcc
2246     cpu
2247     cross_prefix
2248     custom_allocator
2249     cxx
2250     dep_cc
2251     doxygen
2252     env
2253     extra_version
2254     gas
2255     host_cc
2256     host_cflags
2257     host_extralibs
2258     host_ld
2259     host_ldflags
2260     host_os
2261     ignore_tests
2262     install
2263     ld
2264     ln_s
2265     logfile
2266     malloc_prefix
2267     nm
2268     optflags
2269     nvccflags
2270     pkg_config
2271     pkg_config_flags
2272     progs_suffix
2273     random_seed
2274     ranlib
2275     samples
2276     strip
2277     sws_max_filter_size
2278     sysinclude
2279     sysroot
2280     target_exec
2281     target_os
2282     target_path
2283     target_samples
2284     tempprefix
2285     toolchain
2286     valgrind
2287     x86asmexe
2288 "
2289
2290 CMDLINE_APPEND="
2291     extra_cflags
2292     extra_cxxflags
2293     extra_objcflags
2294     host_cppflags
2295 "
2296
2297 # code dependency declarations
2298
2299 # architecture extensions
2300
2301 armv5te_deps="arm"
2302 armv6_deps="arm"
2303 armv6t2_deps="arm"
2304 armv8_deps="aarch64"
2305 neon_deps_any="aarch64 arm"
2306 intrinsics_neon_deps="neon"
2307 vfp_deps_any="aarch64 arm"
2308 vfpv3_deps="vfp"
2309 setend_deps="arm"
2310
2311 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2312
2313 altivec_deps="ppc"
2314 dcbzl_deps="ppc"
2315 ldbrx_deps="ppc"
2316 ppc4xx_deps="ppc"
2317 vsx_deps="altivec"
2318 power8_deps="vsx"
2319
2320 loongson2_deps="mips"
2321 loongson3_deps="mips"
2322 mips32r2_deps="mips"
2323 mips32r5_deps="mips"
2324 mips32r6_deps="mips"
2325 mips64r2_deps="mips"
2326 mips64r6_deps="mips"
2327 mipsfpu_deps="mips"
2328 mipsdsp_deps="mips"
2329 mipsdspr2_deps="mips"
2330 mmi_deps="mips"
2331 msa_deps="mipsfpu"
2332
2333 cpunop_deps="i686"
2334 x86_64_select="i686"
2335 x86_64_suggest="fast_cmov"
2336
2337 amd3dnow_deps="mmx"
2338 amd3dnowext_deps="amd3dnow"
2339 i686_deps="x86"
2340 mmx_deps="x86"
2341 mmxext_deps="mmx"
2342 sse_deps="mmxext"
2343 sse2_deps="sse"
2344 sse3_deps="sse2"
2345 ssse3_deps="sse3"
2346 sse4_deps="ssse3"
2347 sse42_deps="sse4"
2348 aesni_deps="sse42"
2349 avx_deps="sse42"
2350 xop_deps="avx"
2351 fma3_deps="avx"
2352 fma4_deps="avx"
2353 avx2_deps="avx"
2354
2355 mmx_external_deps="x86asm"
2356 mmx_inline_deps="inline_asm x86"
2357 mmx_suggest="mmx_external mmx_inline"
2358
2359 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2360     eval dep=\$${ext}_deps
2361     eval ${ext}_external_deps='"${dep}_external"'
2362     eval ${ext}_inline_deps='"${dep}_inline"'
2363     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2364 done
2365
2366 aligned_stack_if_any="aarch64 ppc x86"
2367 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2368 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2369 fast_unaligned_if_any="aarch64 ppc x86"
2370 simd_align_16_if_any="altivec neon sse"
2371 simd_align_32_if_any="avx"
2372
2373 # system capabilities
2374 symver_if_any="symver_asm_label symver_gnu_asm"
2375 valgrind_backtrace_conflict="optimizations"
2376 valgrind_backtrace_deps="valgrind_valgrind_h"
2377
2378 # threading support
2379 atomics_gcc_if="sync_val_compare_and_swap"
2380 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2381 atomics_win32_if="MemoryBarrier"
2382 atomics_native_if_any="$ATOMICS_LIST"
2383 w32threads_deps="atomics_native"
2384 threads_if_any="$THREADS_LIST"
2385
2386 # subsystems
2387 cbs_h264_select="cbs golomb"
2388 cbs_h265_select="cbs golomb"
2389 cbs_mpeg2_select="cbs"
2390 dct_select="rdft"
2391 dirac_parse_select="golomb"
2392 error_resilience_select="me_cmp"
2393 faandct_deps="faan"
2394 faandct_select="fdctdsp"
2395 faanidct_deps="faan"
2396 faanidct_select="idctdsp"
2397 h264dsp_select="startcode"
2398 hevcparse_select="golomb"
2399 frame_thread_encoder_deps="encoders threads"
2400 intrax8_select="blockdsp idctdsp"
2401 mdct_select="fft"
2402 mdct15_select="fft"
2403 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2404 mpeg_er_select="error_resilience"
2405 mpegaudio_select="mpegaudiodsp mpegaudioheader"
2406 mpegaudiodsp_select="dct"
2407 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2408 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
2409 vc1dsp_select="h264chroma qpeldsp startcode"
2410 rdft_select="fft"
2411
2412 # decoders / encoders
2413 aac_decoder_select="adts_header mdct15 mdct sinewin"
2414 aac_fixed_decoder_select="mdct sinewin"
2415 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2416 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2417 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2418 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2419 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2420 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2421 adpcm_g722_decoder_select="g722dsp"
2422 adpcm_g722_encoder_select="g722dsp"
2423 aic_decoder_select="golomb idctdsp"
2424 alac_encoder_select="lpc"
2425 als_decoder_select="bswapdsp"
2426 amrnb_decoder_select="lsp"
2427 amrwb_decoder_select="lsp"
2428 amv_decoder_select="sp5x_decoder exif"
2429 amv_encoder_select="aandcttables jpegtables mpegvideoenc"
2430 ape_decoder_select="bswapdsp llauddsp"
2431 apng_decoder_select="zlib"
2432 apng_encoder_select="llvidencdsp zlib"
2433 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2434 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2435 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2436 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2437 atrac1_decoder_select="mdct sinewin"
2438 atrac3_decoder_select="mdct"
2439 atrac3p_decoder_select="mdct sinewin"
2440 avrn_decoder_select="exif jpegtables"
2441 bink_decoder_select="blockdsp hpeldsp"
2442 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2443 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2444 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2445 clearvideo_decoder_select="idctdsp"
2446 cllc_decoder_select="bswapdsp"
2447 comfortnoise_encoder_select="lpc"
2448 cook_decoder_select="audiodsp mdct sinewin"
2449 cscd_decoder_select="lzo"
2450 cscd_decoder_suggest="zlib"
2451 dca_decoder_select="mdct"
2452 dds_decoder_select="texturedsp"
2453 dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
2454 dnxhd_decoder_select="blockdsp idctdsp"
2455 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2456 dolby_e_decoder_select="mdct"
2457 dvvideo_decoder_select="dvprofile idctdsp"
2458 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2459 dxa_decoder_select="zlib"
2460 dxv_decoder_select="lzf texturedsp"
2461 eac3_decoder_select="ac3_decoder"
2462 eac3_encoder_select="ac3_encoder"
2463 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2464 eatgq_decoder_select="aandcttables"
2465 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2466 exr_decoder_select="zlib"
2467 ffv1_decoder_select="rangecoder"
2468 ffv1_encoder_select="rangecoder"
2469 ffvhuff_decoder_select="huffyuv_decoder"
2470 ffvhuff_encoder_select="huffyuv_encoder"
2471 fic_decoder_select="golomb"
2472 flac_decoder_select="flacdsp"
2473 flac_encoder_select="bswapdsp flacdsp lpc"
2474 flashsv2_decoder_select="zlib"
2475 flashsv2_encoder_select="zlib"
2476 flashsv_decoder_select="zlib"
2477 flashsv_encoder_select="zlib"
2478 flv_decoder_select="h263_decoder"
2479 flv_encoder_select="h263_encoder"
2480 fourxm_decoder_select="blockdsp bswapdsp"
2481 fraps_decoder_select="bswapdsp huffman"
2482 g2m_decoder_select="blockdsp idctdsp jpegtables zlib"
2483 g729_decoder_select="audiodsp"
2484 h261_decoder_select="mpegvideo"
2485 h261_encoder_select="aandcttables mpegvideoenc"
2486 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2487 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2488 h263i_decoder_select="h263_decoder"
2489 h263p_decoder_select="h263_decoder"
2490 h263p_encoder_select="h263_encoder"
2491 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
2492 h264_decoder_suggest="error_resilience"
2493 hap_decoder_select="snappy texturedsp"
2494 hap_encoder_deps="libsnappy"
2495 hap_encoder_select="texturedspenc"
2496 hevc_decoder_select="bswapdsp cabac golomb hevcparse videodsp"
2497 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2498 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llvidencdsp"
2499 iac_decoder_select="imc_decoder"
2500 imc_decoder_select="bswapdsp fft mdct sinewin"
2501 indeo3_decoder_select="hpeldsp"
2502 indeo4_decoder_select="ividsp"
2503 indeo5_decoder_select="ividsp"
2504 interplay_video_decoder_select="hpeldsp"
2505 jpegls_decoder_select="mjpeg_decoder"
2506 jv_decoder_select="blockdsp"
2507 lagarith_decoder_select="llviddsp"
2508 ljpeg_encoder_select="aandcttables idctdsp jpegtables mpegvideoenc"
2509 magicyuv_decoder_select="llviddsp"
2510 magicyuv_encoder_select="llvidencdsp"
2511 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2512 metasound_decoder_select="lsp mdct sinewin"
2513 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2514 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2515 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2516 mjpegb_decoder_select="mjpeg_decoder"
2517 mlp_decoder_select="mlp_parser"
2518 mlp_encoder_select="lpc"
2519 motionpixels_decoder_select="bswapdsp"
2520 mp1_decoder_select="mpegaudio"
2521 mp1float_decoder_select="mpegaudio"
2522 mp2_decoder_select="mpegaudio"
2523 mp2float_decoder_select="mpegaudio"
2524 mp3_decoder_select="mpegaudio"
2525 mp3adu_decoder_select="mpegaudio"
2526 mp3adufloat_decoder_select="mpegaudio"
2527 mp3float_decoder_select="mpegaudio"
2528 mp3on4_decoder_select="mpegaudio"
2529 mp3on4float_decoder_select="mpegaudio"
2530 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2531 mpc8_decoder_select="mpegaudiodsp"
2532 mpegvideo_decoder_select="mpegvideo"
2533 mpeg1video_decoder_select="mpegvideo"
2534 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2535 mpeg2video_decoder_select="mpegvideo"
2536 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2537 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2538 mpeg4_encoder_select="h263_encoder"
2539 msa1_decoder_select="mss34dsp"
2540 mscc_decoder_select="zlib"
2541 msmpeg4v1_decoder_select="h263_decoder"
2542 msmpeg4v2_decoder_select="h263_decoder"
2543 msmpeg4v2_encoder_select="h263_encoder"
2544 msmpeg4v3_decoder_select="h263_decoder"
2545 msmpeg4v3_encoder_select="h263_encoder"
2546 mss2_decoder_select="mpegvideo qpeldsp vc1_decoder"
2547 mts2_decoder_select="mss34dsp"
2548 mxpeg_decoder_select="mjpeg_decoder"
2549 nellymoser_decoder_select="mdct sinewin"
2550 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2551 nuv_decoder_select="idctdsp lzo"
2552 on2avc_decoder_select="mdct"
2553 opus_decoder_deps="swresample"
2554 opus_decoder_select="mdct15"
2555 opus_encoder_select="audio_frame_queue mdct15"
2556 png_decoder_select="zlib"
2557 png_encoder_select="llvidencdsp zlib"
2558 prores_decoder_select="blockdsp idctdsp"
2559 prores_encoder_select="fdctdsp"
2560 qcelp_decoder_select="lsp"
2561 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2562 ra_144_decoder_select="audiodsp"
2563 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2564 ralf_decoder_select="golomb"
2565 rawvideo_decoder_select="bswapdsp"
2566 rscc_decoder_select="zlib"
2567 rtjpeg_decoder_select="me_cmp"
2568 rv10_decoder_select="h263_decoder"
2569 rv10_encoder_select="h263_encoder"
2570 rv20_decoder_select="h263_decoder"
2571 rv20_encoder_select="h263_encoder"
2572 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2573 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2574 screenpresso_decoder_select="zlib"
2575 shorten_decoder_select="bswapdsp"
2576 sipr_decoder_select="lsp"
2577 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2578 snow_encoder_select="aandcttables dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2579 sonic_decoder_select="golomb rangecoder"
2580 sonic_encoder_select="golomb rangecoder"
2581 sonic_ls_encoder_select="golomb rangecoder"
2582 sp5x_decoder_select="mjpeg_decoder"
2583 srgc_decoder_select="zlib"
2584 svq1_decoder_select="hpeldsp"
2585 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2586 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2587 svq3_decoder_suggest="zlib"
2588 tak_decoder_select="audiodsp"
2589 tdsc_decoder_select="zlib mjpeg_decoder"
2590 theora_decoder_select="vp3_decoder"
2591 thp_decoder_select="mjpeg_decoder"
2592 tiff_decoder_suggest="zlib lzma"
2593 tiff_encoder_suggest="zlib"
2594 truehd_decoder_select="mlp_parser"
2595 truehd_encoder_select="lpc"
2596 truemotion2_decoder_select="bswapdsp"
2597 truespeech_decoder_select="bswapdsp"
2598 tscc_decoder_select="zlib"
2599 twinvq_decoder_select="mdct lsp sinewin"
2600 txd_decoder_select="texturedsp"
2601 utvideo_decoder_select="bswapdsp llviddsp"
2602 utvideo_encoder_select="bswapdsp huffman llvidencdsp"
2603 vble_decoder_select="llviddsp"
2604 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 mpegvideo vc1dsp"
2605 vc1image_decoder_select="vc1_decoder"
2606 vorbis_decoder_select="mdct"
2607 vorbis_encoder_select="mdct"
2608 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2609 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2610 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2611 vp6a_decoder_select="vp6_decoder"
2612 vp6f_decoder_select="vp6_decoder"
2613 vp7_decoder_select="h264pred videodsp vp8dsp"
2614 vp8_decoder_select="h264pred videodsp vp8dsp"
2615 vp9_decoder_select="videodsp vp9_parser"
2616 webp_decoder_select="vp8_decoder exif"
2617 wmalossless_decoder_select="llauddsp"
2618 wmapro_decoder_select="mdct sinewin wma_freqs"
2619 wmav1_decoder_select="mdct sinewin wma_freqs"
2620 wmav1_encoder_select="mdct sinewin wma_freqs"
2621 wmav2_decoder_select="mdct sinewin wma_freqs"
2622 wmav2_encoder_select="mdct sinewin wma_freqs"
2623 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2624 wmv1_decoder_select="h263_decoder"
2625 wmv1_encoder_select="h263_encoder"
2626 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2627 wmv2_encoder_select="h263_encoder wmv2dsp"
2628 wmv3_decoder_select="vc1_decoder"
2629 wmv3image_decoder_select="wmv3_decoder"
2630 xma1_decoder_select="wmapro_decoder"
2631 xma2_decoder_select="wmapro_decoder"
2632 zerocodec_decoder_select="zlib"
2633 zlib_decoder_select="zlib"
2634 zlib_encoder_select="zlib"
2635 zmbv_decoder_select="zlib"
2636 zmbv_encoder_select="zlib"
2637
2638 # hardware accelerators
2639 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2640 cuda_deps_any="libdl LoadLibrary"
2641 cuvid_deps="cuda"
2642 d3d11va_deps="dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2643 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode ole32 user32"
2644 videotoolbox_hwaccel_deps="videotoolbox pthreads"
2645 videotoolbox_hwaccel_extralibs="-framework QuartzCore"
2646 xvmc_deps="X11_extensions_XvMClib_h"
2647
2648 h263_vaapi_hwaccel_deps="vaapi"
2649 h263_vaapi_hwaccel_select="h263_decoder"
2650 h263_videotoolbox_hwaccel_deps="videotoolbox"
2651 h263_videotoolbox_hwaccel_select="h263_decoder"
2652 h264_cuvid_hwaccel_deps="cuda cuvid"
2653 h264_cuvid_hwaccel_select="h264_cuvid_decoder"
2654 h264_d3d11va_hwaccel_deps="d3d11va"
2655 h264_d3d11va_hwaccel_select="h264_decoder"
2656 h264_d3d11va2_hwaccel_deps="d3d11va"
2657 h264_d3d11va2_hwaccel_select="h264_decoder"
2658 h264_dxva2_hwaccel_deps="dxva2"
2659 h264_dxva2_hwaccel_select="h264_decoder"
2660 h264_mediacodec_hwaccel_deps="mediacodec"
2661 h264_mmal_hwaccel_deps="mmal"
2662 h264_nvdec_hwaccel_deps="cuda nvdec"
2663 h264_nvdec_hwaccel_select="h264_decoder"
2664 h264_qsv_hwaccel_deps="libmfx"
2665 h264_vaapi_hwaccel_deps="vaapi"
2666 h264_vaapi_hwaccel_select="h264_decoder"
2667 h264_vdpau_hwaccel_deps="vdpau"
2668 h264_vdpau_hwaccel_select="h264_decoder"
2669 h264_videotoolbox_hwaccel_deps="videotoolbox"
2670 h264_videotoolbox_hwaccel_select="h264_decoder"
2671 hevc_cuvid_hwaccel_deps="cuda cuvid"
2672 hevc_cuvid_hwaccel_select="hevc_cuvid_decoder"
2673 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2674 hevc_d3d11va_hwaccel_select="hevc_decoder"
2675 hevc_mediacodec_hwaccel_deps="mediacodec"
2676 hevc_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2677 hevc_d3d11va2_hwaccel_select="hevc_decoder"
2678 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2679 hevc_dxva2_hwaccel_select="hevc_decoder"
2680 hevc_nvdec_hwaccel_deps="cuda nvdec"
2681 hevc_nvdec_hwaccel_select="hevc_decoder"
2682 hevc_qsv_hwaccel_deps="libmfx"
2683 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2684 hevc_vaapi_hwaccel_select="hevc_decoder"
2685 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2686 hevc_vdpau_hwaccel_select="hevc_decoder"
2687 hevc_videotoolbox_hwaccel_deps="videotoolbox"
2688 hevc_videotoolbox_hwaccel_select="hevc_decoder"
2689 mjpeg_cuvid_hwaccel_deps="cuda cuvid"
2690 mjpeg_cuvid_hwaccel_select="mjpeg_cuvid_decoder"
2691 mpeg_xvmc_hwaccel_deps="xvmc"
2692 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2693 mpeg1_cuvid_hwaccel_deps="cuda cuvid"
2694 mpeg1_cuvid_hwaccel_select="mpeg1_cuvid_decoder"
2695 mpeg1_vdpau_hwaccel_deps="vdpau"
2696 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2697 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2698 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2699 mpeg1_xvmc_hwaccel_deps="xvmc"
2700 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2701 mpeg2_cuvid_hwaccel_deps="cuda cuvid"
2702 mpeg2_cuvid_hwaccel_select="mpeg2_cuvid_decoder"
2703 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2704 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2705 mpeg2_d3d11va2_hwaccel_deps="d3d11va"
2706 mpeg2_d3d11va2_hwaccel_select="mpeg2video_decoder"
2707 mpeg2_dxva2_hwaccel_deps="dxva2"
2708 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2709 mpeg2_mediacodec_hwaccel_deps="mediacodec"
2710 mpeg2_mmal_hwaccel_deps="mmal"
2711 mpeg2_qsv_hwaccel_deps="libmfx"
2712 mpeg2_vaapi_hwaccel_deps="vaapi"
2713 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2714 mpeg2_vdpau_hwaccel_deps="vdpau"
2715 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2716 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2717 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2718 mpeg2_xvmc_hwaccel_deps="xvmc"
2719 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2720 mpeg4_cuvid_hwaccel_deps="cuda cuvid"
2721 mpeg4_cuvid_hwaccel_select="mpeg4_cuvid_decoder"
2722 mpeg4_mediacodec_hwaccel_deps="mediacodec"
2723 mpeg4_mmal_hwaccel_deps="mmal"
2724 mpeg4_vaapi_hwaccel_deps="vaapi"
2725 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2726 mpeg4_vdpau_hwaccel_deps="vdpau"
2727 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2728 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2729 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2730 vc1_cuvid_hwaccel_deps="cuda cuvid"
2731 vc1_cuvid_hwaccel_select="vc1_cuvid_decoder"
2732 vc1_d3d11va_hwaccel_deps="d3d11va"
2733 vc1_d3d11va_hwaccel_select="vc1_decoder"
2734 vc1_d3d11va2_hwaccel_deps="d3d11va"
2735 vc1_d3d11va2_hwaccel_select="vc1_decoder"
2736 vc1_dxva2_hwaccel_deps="dxva2"
2737 vc1_dxva2_hwaccel_select="vc1_decoder"
2738 vc1_mmal_hwaccel_deps="mmal"
2739 vc1_qsv_hwaccel_deps="libmfx"
2740 vc1_vaapi_hwaccel_deps="vaapi"
2741 vc1_vaapi_hwaccel_select="vc1_decoder"
2742 vc1_vdpau_hwaccel_deps="vdpau"
2743 vc1_vdpau_hwaccel_select="vc1_decoder"
2744 vp8_cuvid_hwaccel_deps="cuda cuvid"
2745 vp8_cuvid_hwaccel_select="vp8_cuvid_decoder"
2746 vp9_cuvid_hwaccel_deps="cuda cuvid"
2747 vp9_cuvid_hwaccel_select="vp9_cuvid_decoder"
2748 vp8_mediacodec_hwaccel_deps="mediacodec"
2749 vp8_qsv_hwaccel_deps="libmfx"
2750 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2751 vp9_d3d11va_hwaccel_select="vp9_decoder"
2752 vp9_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2753 vp9_d3d11va2_hwaccel_select="vp9_decoder"
2754 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
2755 vp9_dxva2_hwaccel_select="vp9_decoder"
2756 vp9_mediacodec_hwaccel_deps="mediacodec"
2757 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9_bit_depth"
2758 vp9_vaapi_hwaccel_select="vp9_decoder"
2759 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2760 wmv3_d3d11va2_hwaccel_select="vc1_d3d11va2_hwaccel"
2761 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2762 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2763 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2764
2765 # hardware-accelerated codecs
2766 omx_deps="libdl pthreads"
2767 omx_rpi_select="omx"
2768 qsv_deps="libmfx"
2769 qsvdec_select="qsv"
2770 qsvenc_select="qsv"
2771 qsvvpp_select="qsv"
2772 vaapi_encode_deps="vaapi"
2773 v4l2_m2m_deps_any="linux_videodev2_h"
2774
2775 hwupload_cuda_filter_deps="cuda"
2776 scale_npp_filter_deps="cuda libnpp"
2777 scale_cuda_filter_deps="cuda_sdk"
2778 thumbnail_cuda_filter_deps="cuda_sdk"
2779
2780 nvenc_deps="cuda"
2781 nvenc_deps_any="libdl LoadLibrary"
2782 nvenc_encoder_deps="nvenc"
2783
2784 h263_v4l2m2m_decoder_deps="v4l2_m2m h263_v4l2_m2m"
2785 h263_v4l2m2m_encoder_deps="v4l2_m2m h263_v4l2_m2m"
2786 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2787 h264_cuvid_decoder_deps="cuda cuvid"
2788 h264_cuvid_decoder_select="h264_mp4toannexb_bsf"
2789 h264_mediacodec_decoder_deps="mediacodec"
2790 h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
2791 h264_mmal_decoder_deps="mmal"
2792 h264_nvenc_encoder_deps="nvenc"
2793 h264_omx_encoder_deps="omx"
2794 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2795 h264_qsv_encoder_select="qsvenc"
2796 h264_rkmpp_decoder_deps="rkmpp"
2797 h264_rkmpp_decoder_select="h264_mp4toannexb_bsf"
2798 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2799 h264_vaapi_encoder_select="cbs_h264 vaapi_encode"
2800 h264_v4l2m2m_decoder_deps="v4l2_m2m h264_v4l2_m2m"
2801 h264_v4l2m2m_encoder_deps="v4l2_m2m h264_v4l2_m2m"
2802 hevc_cuvid_decoder_deps="cuda cuvid"
2803 hevc_cuvid_decoder_select="hevc_mp4toannexb_bsf"
2804 hevc_mediacodec_decoder_deps="mediacodec"
2805 hevc_mediacodec_decoder_select="hevc_mp4toannexb_bsf hevc_parser"
2806 hevc_nvenc_encoder_deps="nvenc"
2807 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec hevc_qsv_hwaccel"
2808 hevc_qsv_encoder_select="hevcparse qsvenc"
2809 hevc_rkmpp_decoder_deps="rkmpp"
2810 hevc_rkmpp_decoder_select="hevc_mp4toannexb_bsf"
2811 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2812 hevc_vaapi_encoder_select="cbs_h265 vaapi_encode"
2813 hevc_v4l2m2m_decoder_deps="v4l2_m2m hevc_v4l2_m2m"
2814 hevc_v4l2m2m_encoder_deps="v4l2_m2m hevc_v4l2_m2m"
2815 mjpeg_cuvid_decoder_deps="cuda cuvid"
2816 mjpeg_qsv_encoder_deps="libmfx"
2817 mjpeg_qsv_encoder_select="qsvenc"
2818 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2819 mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
2820 mpeg1_cuvid_decoder_deps="cuda cuvid"
2821 mpeg1_v4l2m2m_decoder_deps="v4l2_m2m mpeg1_v4l2_m2m"
2822 mpeg2_crystalhd_decoder_select="crystalhd"
2823 mpeg2_cuvid_decoder_deps="cuda cuvid"
2824 mpeg2_mmal_decoder_deps="mmal"
2825 mpeg2_mediacodec_decoder_deps="mediacodec"
2826 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel"
2827 mpeg2_qsv_encoder_select="qsvenc"
2828 mpeg2_vaapi_encoder_deps="VAEncPictureParameterBufferMPEG2"
2829 mpeg2_vaapi_encoder_select="cbs_mpeg2 vaapi_encode"
2830 mpeg2_v4l2m2m_decoder_deps="v4l2_m2m mpeg2_v4l2_m2m"
2831 mpeg4_crystalhd_decoder_select="crystalhd"
2832 mpeg4_cuvid_decoder_deps="cuda cuvid"
2833 mpeg4_mediacodec_decoder_deps="mediacodec"
2834 mpeg4_mmal_decoder_deps="mmal"
2835 mpeg4_omx_encoder_deps="omx"
2836 mpeg4_v4l2m2m_decoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
2837 mpeg4_v4l2m2m_encoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
2838 msmpeg4_crystalhd_decoder_select="crystalhd"
2839 nvenc_h264_encoder_select="h264_nvenc_encoder"
2840 nvenc_hevc_encoder_select="hevc_nvenc_encoder"
2841 vc1_crystalhd_decoder_select="crystalhd"
2842 vc1_cuvid_decoder_deps="cuda cuvid"
2843 vc1_mmal_decoder_deps="mmal"
2844 vc1_qsv_decoder_select="qsvdec vc1_qsv_hwaccel vc1_parser"
2845 vc1_v4l2m2m_decoder_deps="v4l2_m2m vc1_v4l2_m2m"
2846 vp8_cuvid_decoder_deps="cuda cuvid"
2847 vp8_mediacodec_decoder_deps="mediacodec"
2848 vp8_qsv_decoder_select="qsvdec vp8_qsv_hwaccel vp8_parser"
2849 vp8_rkmpp_decoder_deps="rkmpp"
2850 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
2851 vp8_vaapi_encoder_select="vaapi_encode"
2852 vp8_v4l2m2m_decoder_deps="v4l2_m2m vp8_v4l2_m2m"
2853 vp8_v4l2m2m_encoder_deps="v4l2_m2m vp8_v4l2_m2m"
2854 vp9_cuvid_decoder_deps="cuda cuvid"
2855 vp9_mediacodec_decoder_deps="mediacodec"
2856 vp9_rkmpp_decoder_deps="rkmpp"
2857 vp9_vaapi_encoder_deps="VAEncPictureParameterBufferVP9"
2858 vp9_vaapi_encoder_select="vaapi_encode"
2859 vp9_v4l2m2m_decoder_deps="v4l2_m2m vp9_v4l2_m2m"
2860 wmv3_crystalhd_decoder_select="crystalhd"
2861
2862 # parsers
2863 aac_parser_select="adts_header"
2864 h264_parser_select="golomb h264dsp h264parse"
2865 hevc_parser_select="hevcparse"
2866 mpegaudio_parser_select="mpegaudioheader"
2867 mpegvideo_parser_select="mpegvideo"
2868 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
2869 vc1_parser_select="vc1dsp"
2870
2871 # bitstream_filters
2872 aac_adtstoasc_bsf_select="adts_header"
2873 h264_metadata_bsf_select="cbs_h264"
2874 h264_redundant_pps_bsf_select="cbs_h264"
2875 hevc_metadata_bsf_select="cbs_h265"
2876 mjpeg2jpeg_bsf_select="jpegtables"
2877 mpeg2_metadata_bsf_select="cbs_mpeg2"
2878 trace_headers_bsf_select="cbs_h264 cbs_h265 cbs_mpeg2"
2879
2880 # external libraries
2881 aac_at_decoder_deps="audiotoolbox"
2882 ac3_at_decoder_deps="audiotoolbox"
2883 ac3_at_decoder_select="ac3_parser"
2884 adpcm_ima_qt_at_decoder_deps="audiotoolbox"
2885 alac_at_decoder_deps="audiotoolbox"
2886 amr_nb_at_decoder_deps="audiotoolbox"
2887 avisynth_deps_any="libdl LoadLibrary"
2888 avisynth_demuxer_deps="avisynth"
2889 avisynth_demuxer_select="riffdec"
2890 eac3_at_decoder_deps="audiotoolbox"
2891 eac3_at_decoder_select="ac3_parser"
2892 gsm_ms_at_decoder_deps="audiotoolbox"
2893 ilbc_at_decoder_deps="audiotoolbox"
2894 mp1_at_decoder_deps="audiotoolbox"
2895 mp2_at_decoder_deps="audiotoolbox"
2896 mp3_at_decoder_deps="audiotoolbox"
2897 mp1_at_decoder_select="mpegaudioheader"
2898 mp2_at_decoder_select="mpegaudioheader"
2899 mp3_at_decoder_select="mpegaudioheader"
2900 pcm_alaw_at_decoder_deps="audiotoolbox"
2901 pcm_mulaw_at_decoder_deps="audiotoolbox"
2902 qdmc_at_decoder_deps="audiotoolbox"
2903 qdm2_at_decoder_deps="audiotoolbox"
2904 aac_at_encoder_deps="audiotoolbox"
2905 aac_at_encoder_select="audio_frame_queue"
2906 alac_at_encoder_deps="audiotoolbox"
2907 alac_at_encoder_select="audio_frame_queue"
2908 ilbc_at_encoder_deps="audiotoolbox"
2909 ilbc_at_encoder_select="audio_frame_queue"
2910 pcm_alaw_at_encoder_deps="audiotoolbox"
2911 pcm_alaw_at_encoder_select="audio_frame_queue"
2912 pcm_mulaw_at_encoder_deps="audiotoolbox"
2913 pcm_mulaw_at_encoder_select="audio_frame_queue"
2914 chromaprint_muxer_deps="chromaprint"
2915 h264_videotoolbox_encoder_deps="pthreads"
2916 h264_videotoolbox_encoder_select="videotoolbox_encoder"
2917 libcelt_decoder_deps="libcelt"
2918 libfdk_aac_decoder_deps="libfdk_aac"
2919 libfdk_aac_encoder_deps="libfdk_aac"
2920 libfdk_aac_encoder_select="audio_frame_queue"
2921 libgme_demuxer_deps="libgme"
2922 libgsm_decoder_deps="libgsm"
2923 libgsm_encoder_deps="libgsm"
2924 libgsm_ms_decoder_deps="libgsm"
2925 libgsm_ms_encoder_deps="libgsm"
2926 libilbc_decoder_deps="libilbc"
2927 libilbc_encoder_deps="libilbc"
2928 libkvazaar_encoder_deps="libkvazaar"
2929 libmodplug_demuxer_deps="libmodplug"
2930 libmp3lame_encoder_deps="libmp3lame"
2931 libmp3lame_encoder_select="audio_frame_queue mpegaudioheader"
2932 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2933 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2934 libopencore_amrnb_encoder_select="audio_frame_queue"
2935 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2936 libopenh264_decoder_deps="libopenh264"
2937 libopenh264_decoder_select="h264_mp4toannexb_bsf"
2938 libopenh264_encoder_deps="libopenh264"
2939 libopenjpeg_decoder_deps="libopenjpeg"
2940 libopenjpeg_encoder_deps="libopenjpeg"
2941 libopenmpt_demuxer_deps="libopenmpt"
2942 libopus_decoder_deps="libopus"
2943 libopus_encoder_deps="libopus"
2944 libopus_encoder_select="audio_frame_queue"
2945 librsvg_decoder_deps="librsvg"
2946 libshine_encoder_deps="libshine"
2947 libshine_encoder_select="audio_frame_queue"
2948 libspeex_decoder_deps="libspeex"
2949 libspeex_encoder_deps="libspeex"
2950 libspeex_encoder_select="audio_frame_queue"
2951 libtheora_encoder_deps="libtheora"
2952 libtwolame_encoder_deps="libtwolame"
2953 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2954 libvorbis_decoder_deps="libvorbis"
2955 libvorbis_encoder_deps="libvorbis libvorbisenc"
2956 libvorbis_encoder_select="audio_frame_queue"
2957 libvpx_vp8_decoder_deps="libvpx"
2958 libvpx_vp8_encoder_deps="libvpx"
2959 libvpx_vp9_decoder_deps="libvpx"
2960 libvpx_vp9_encoder_deps="libvpx"
2961 libwavpack_encoder_deps="libwavpack"
2962 libwavpack_encoder_select="audio_frame_queue"
2963 libwebp_encoder_deps="libwebp"
2964 libwebp_anim_encoder_deps="libwebp"
2965 libx262_encoder_deps="libx262"
2966 libx264_encoder_deps="libx264"
2967 libx264rgb_encoder_deps="libx264 x264_csp_bgr"
2968 libx264rgb_encoder_select="libx264_encoder"
2969 libx265_encoder_deps="libx265"
2970 libxavs_encoder_deps="libxavs"
2971 libxvid_encoder_deps="libxvid"
2972 libzvbi_teletext_decoder_deps="libzvbi"
2973 videotoolbox_suggest="coreservices"
2974 videotoolbox_deps="corefoundation coremedia corevideo"
2975 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
2976
2977 # demuxers / muxers
2978 ac3_demuxer_select="ac3_parser"
2979 aiff_muxer_select="iso_media"
2980 asf_demuxer_select="riffdec"
2981 asf_o_demuxer_select="riffdec"
2982 asf_muxer_select="riffenc"
2983 asf_stream_muxer_select="asf_muxer"
2984 avi_demuxer_select="iso_media riffdec exif"
2985 avi_muxer_select="riffenc"
2986 caf_demuxer_select="iso_media riffdec"
2987 caf_muxer_select="iso_media"
2988 dash_muxer_select="mp4_muxer"
2989 dash_demuxer_deps="libxml2"
2990 dirac_demuxer_select="dirac_parser"
2991 dts_demuxer_select="dca_parser"
2992 dtshd_demuxer_select="dca_parser"
2993 dv_demuxer_select="dvprofile"
2994 dv_muxer_select="dvprofile"
2995 dxa_demuxer_select="riffdec"
2996 eac3_demuxer_select="ac3_parser"
2997 f4v_muxer_select="mov_muxer"
2998 fifo_muxer_deps="threads"
2999 flac_demuxer_select="flac_parser"
3000 hds_muxer_select="flv_muxer"
3001 hls_muxer_select="mpegts_muxer"
3002 hls_muxer_suggest="gcrypt openssl"
3003 image2_alias_pix_demuxer_select="image2_demuxer"
3004 image2_brender_pix_demuxer_select="image2_demuxer"
3005 ipod_muxer_select="mov_muxer"
3006 ismv_muxer_select="mov_muxer"
3007 matroska_audio_muxer_select="matroska_muxer"
3008 matroska_demuxer_select="iso_media riffdec"
3009 matroska_demuxer_suggest="bzlib lzo zlib"
3010 matroska_muxer_select="iso_media riffenc"
3011 mmf_muxer_select="riffenc"
3012 mov_demuxer_select="iso_media riffdec"
3013 mov_demuxer_suggest="zlib"
3014 mov_muxer_select="iso_media riffenc rtpenc_chain"
3015 mp3_demuxer_select="mpegaudio_parser"
3016 mp3_muxer_select="mpegaudioheader"
3017 mp4_muxer_select="mov_muxer"
3018 mpegts_demuxer_select="iso_media"
3019 mpegts_muxer_select="adts_muxer latm_muxer"
3020 mpegtsraw_demuxer_select="mpegts_demuxer"
3021 mxf_d10_muxer_select="mxf_muxer"
3022 mxf_opatom_muxer_select="mxf_muxer"
3023 nut_muxer_select="riffenc"
3024 nuv_demuxer_select="riffdec"
3025 oga_muxer_select="ogg_muxer"
3026 ogg_demuxer_select="dirac_parse"
3027 ogv_muxer_select="ogg_muxer"
3028 opus_muxer_select="ogg_muxer"
3029 psp_muxer_select="mov_muxer"
3030 rtp_demuxer_select="sdp_demuxer"
3031 rtp_muxer_select="golomb"
3032 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
3033 rtsp_demuxer_select="http_protocol rtpdec"
3034 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
3035 sap_demuxer_select="sdp_demuxer"
3036 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
3037 sdp_demuxer_select="rtpdec"
3038 smoothstreaming_muxer_select="ismv_muxer"
3039 spdif_demuxer_select="adts_header"
3040 spdif_muxer_select="adts_header"
3041 spx_muxer_select="ogg_muxer"
3042 swf_demuxer_suggest="zlib"
3043 tak_demuxer_select="tak_parser"
3044 tg2_muxer_select="mov_muxer"
3045 tgp_muxer_select="mov_muxer"
3046 vobsub_demuxer_select="mpegps_demuxer"
3047 w64_demuxer_select="wav_demuxer"
3048 w64_muxer_select="wav_muxer"
3049 wav_demuxer_select="riffdec"
3050 wav_muxer_select="riffenc"
3051 webm_muxer_select="iso_media riffenc"
3052 webm_dash_manifest_demuxer_select="matroska_demuxer"
3053 wtv_demuxer_select="mpegts_demuxer riffdec"
3054 wtv_muxer_select="mpegts_muxer riffenc"
3055 xmv_demuxer_select="riffdec"
3056 xwma_demuxer_select="riffdec"
3057
3058 # indevs / outdevs
3059 alsa_indev_deps="alsa"
3060 alsa_outdev_deps="alsa"
3061 avfoundation_indev_deps="avfoundation corevideo coremedia pthreads"
3062 avfoundation_indev_suggest="coregraphics applicationservices"
3063 avfoundation_indev_extralibs="-framework Foundation"
3064 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
3065 caca_outdev_deps="libcaca"
3066 decklink_deps_any="libdl LoadLibrary"
3067 decklink_indev_deps="decklink threads"
3068 decklink_indev_extralibs="-lstdc++"
3069 decklink_outdev_deps="decklink threads"
3070 decklink_outdev_extralibs="-lstdc++"
3071 libndi_newtek_indev_deps="libndi_newtek"
3072 libndi_newtek_indev_extralibs="-lndi"
3073 libndi_newtek_outdev_deps="libndi_newtek"
3074 libndi_newtek_outdev_extralibs="-lndi"
3075 dshow_indev_deps="IBaseFilter"
3076 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
3077 fbdev_indev_deps="linux_fb_h"
3078 fbdev_outdev_deps="linux_fb_h"
3079 gdigrab_indev_deps="CreateDIBSection"
3080 gdigrab_indev_extralibs="-lgdi32"
3081 gdigrab_indev_select="bmp_decoder"
3082 iec61883_indev_deps="libiec61883"
3083 jack_indev_deps="libjack"
3084 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
3085 kmsgrab_indev_deps="libdrm"
3086 lavfi_indev_deps="avfilter"
3087 libcdio_indev_deps="libcdio"
3088 libdc1394_indev_deps="libdc1394"
3089 openal_indev_deps="openal"
3090 opengl_outdev_deps="opengl"
3091 oss_indev_deps_any="sys_soundcard_h"
3092 oss_outdev_deps_any="sys_soundcard_h"
3093 pulse_indev_deps="libpulse"
3094 pulse_outdev_deps="libpulse"
3095 sdl2_outdev_deps="sdl2"
3096 sndio_indev_deps="sndio"
3097 sndio_outdev_deps="sndio"
3098 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
3099 v4l2_indev_suggest="libv4l2"
3100 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
3101 v4l2_outdev_suggest="libv4l2"
3102 vfwcap_indev_deps="vfw32 vfwcap_defines"
3103 xcbgrab_indev_deps="libxcb"
3104 xcbgrab_indev_suggest="libxcb_shm libxcb_shape libxcb_xfixes"
3105 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
3106 xv_outdev_extralibs="-lXv -lX11 -lXext"
3107
3108 # protocols
3109 async_protocol_deps="threads"
3110 bluray_protocol_deps="libbluray"
3111 ffrtmpcrypt_protocol_conflict="librtmp_protocol"
3112 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
3113 ffrtmpcrypt_protocol_select="tcp_protocol"
3114 ffrtmphttp_protocol_conflict="librtmp_protocol"
3115 ffrtmphttp_protocol_select="http_protocol"
3116 ftp_protocol_select="tcp_protocol"
3117 gopher_protocol_select="network"
3118 http_protocol_select="tcp_protocol"
3119 http_protocol_suggest="zlib"
3120 httpproxy_protocol_select="tcp_protocol"
3121 httpproxy_protocol_suggest="zlib"
3122 https_protocol_select="tls_protocol"
3123 https_protocol_suggest="zlib"
3124 icecast_protocol_select="http_protocol"
3125 librtmp_protocol_deps="librtmp"
3126 librtmpe_protocol_deps="librtmp"
3127 librtmps_protocol_deps="librtmp"
3128 librtmpt_protocol_deps="librtmp"
3129 librtmpte_protocol_deps="librtmp"
3130 libsmbclient_protocol_deps="libsmbclient gplv3"
3131 libssh_protocol_deps="libssh"
3132 mmsh_protocol_select="http_protocol"
3133 mmst_protocol_select="network"
3134 rtmp_protocol_conflict="librtmp_protocol"
3135 rtmp_protocol_select="tcp_protocol"
3136 rtmp_protocol_suggest="zlib"
3137 rtmpe_protocol_select="ffrtmpcrypt_protocol"
3138 rtmpe_protocol_suggest="zlib"
3139 rtmps_protocol_conflict="librtmp_protocol"
3140 rtmps_protocol_select="tls_protocol"
3141 rtmps_protocol_suggest="zlib"
3142 rtmpt_protocol_select="ffrtmphttp_protocol"
3143 rtmpt_protocol_suggest="zlib"
3144 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
3145 rtmpte_protocol_suggest="zlib"
3146 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
3147 rtmpts_protocol_suggest="zlib"
3148 rtp_protocol_select="udp_protocol"
3149 schannel_conflict="openssl gnutls"
3150 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
3151 sctp_protocol_select="network"
3152 securetransport_conflict="openssl gnutls"
3153 srtp_protocol_select="rtp_protocol srtp"
3154 tcp_protocol_select="network"
3155 tls_protocol_deps_any="gnutls openssl schannel securetransport"
3156 tls_protocol_select="tcp_protocol"
3157 udp_protocol_select="network"
3158 udplite_protocol_select="network"
3159 unix_protocol_deps="sys_un_h"
3160 unix_protocol_select="network"
3161
3162 # filters
3163 afftfilt_filter_deps="avcodec"
3164 afftfilt_filter_select="fft"
3165 afir_filter_deps="avcodec"
3166 afir_filter_select="fft"
3167 amovie_filter_deps="avcodec avformat"
3168 aresample_filter_deps="swresample"
3169 ass_filter_deps="libass"
3170 atempo_filter_deps="avcodec"
3171 atempo_filter_select="rdft"
3172 azmq_filter_deps="libzmq"
3173 blackframe_filter_deps="gpl"
3174 boxblur_filter_deps="gpl"
3175 bs2b_filter_deps="libbs2b"
3176 colormatrix_filter_deps="gpl"
3177 coreimage_filter_deps="coreimage appkit"
3178 coreimage_filter_extralibs="-framework OpenGL"
3179 coreimagesrc_filter_deps="coreimage appkit"
3180 coreimagesrc_filter_extralibs="-framework OpenGL"
3181 cover_rect_filter_deps="avcodec avformat gpl"
3182 cropdetect_filter_deps="gpl"
3183 deinterlace_qsv_filter_deps="libmfx"
3184 deinterlace_vaapi_filter_deps="vaapi"
3185 delogo_filter_deps="gpl"
3186 deshake_filter_select="pixelutils"
3187 deshake_filter_suggest="opencl"
3188 drawtext_filter_deps="libfreetype"
3189 drawtext_filter_suggest="libfontconfig libfribidi"
3190 elbg_filter_deps="avcodec"
3191 eq_filter_deps="gpl"
3192 fftfilt_filter_deps="avcodec"
3193 fftfilt_filter_select="rdft"
3194 find_rect_filter_deps="avcodec avformat gpl"
3195 firequalizer_filter_deps="avcodec"
3196 firequalizer_filter_select="rdft"
3197 flite_filter_deps="libflite"
3198 framerate_filter_select="pixelutils"
3199 frei0r_filter_deps="frei0r libdl"
3200 frei0r_src_filter_deps="frei0r libdl"
3201 fspp_filter_deps="gpl"
3202 geq_filter_deps="gpl"
3203 histeq_filter_deps="gpl"
3204 hqdn3d_filter_deps="gpl"
3205 interlace_filter_deps="gpl"
3206 kerndeint_filter_deps="gpl"
3207 ladspa_filter_deps="ladspa libdl"
3208 mcdeint_filter_deps="avcodec gpl"
3209 movie_filter_deps="avcodec avformat"
3210 mpdecimate_filter_deps="gpl"
3211 mpdecimate_filter_select="pixelutils"
3212 mptestsrc_filter_deps="gpl"
3213 negate_filter_deps="lut_filter"
3214 nnedi_filter_deps="gpl"
3215 ocr_filter_deps="libtesseract"
3216 ocv_filter_deps="libopencv"
3217 overlay_qsv_filter_deps="libmfx"
3218 overlay_qsv_filter_select="qsvvpp"
3219 owdenoise_filter_deps="gpl"
3220 pan_filter_deps="swresample"
3221 perspective_filter_deps="gpl"
3222 phase_filter_deps="gpl"
3223 pp7_filter_deps="gpl"
3224 pp_filter_deps="gpl postproc"
3225 pullup_filter_deps="gpl"
3226 removelogo_filter_deps="avcodec avformat swscale"
3227 repeatfields_filter_deps="gpl"
3228 resample_filter_deps="avresample"
3229 rubberband_filter_deps="librubberband"
3230 sab_filter_deps="gpl swscale"
3231 scale2ref_filter_deps="swscale"
3232 scale_filter_deps="swscale"
3233 scale_qsv_filter_deps="libmfx"
3234 select_filter_select="pixelutils"
3235 showcqt_filter_deps="avcodec avformat swscale"
3236 showcqt_filter_suggest="libfontconfig libfreetype"
3237 showcqt_filter_select="fft"
3238 showfreqs_filter_deps="avcodec"
3239 showfreqs_filter_select="fft"
3240 showspectrum_filter_deps="avcodec"
3241 showspectrum_filter_select="fft"
3242 showspectrumpic_filter_deps="avcodec"
3243 showspectrumpic_filter_select="fft"
3244 signature_filter_deps="gpl avcodec avformat"
3245 smartblur_filter_deps="gpl swscale"
3246 sofalizer_filter_deps="libmysofa avcodec"
3247 sofalizer_filter_select="fft"
3248 spectrumsynth_filter_deps="avcodec"
3249 spectrumsynth_filter_select="fft"
3250 spp_filter_deps="gpl avcodec"
3251 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3252 stereo3d_filter_deps="gpl"
3253 subtitles_filter_deps="avformat avcodec libass"
3254 super2xsai_filter_deps="gpl"
3255 pixfmts_super2xsai_test_deps="super2xsai_filter"
3256 tinterlace_filter_deps="gpl"
3257 tinterlace_merge_test_deps="tinterlace_filter"
3258 tinterlace_pad_test_deps="tinterlace_filter"
3259 tonemap_filter_deps="const_nan"
3260 uspp_filter_deps="gpl avcodec"
3261 unsharp_filter_suggest="opencl"
3262 vaguedenoiser_filter_deps="gpl"
3263 vidstabdetect_filter_deps="libvidstab"
3264 vidstabtransform_filter_deps="libvidstab"
3265 libvmaf_filter_deps="libvmaf"
3266 zmq_filter_deps="libzmq"
3267 zoompan_filter_deps="swscale"
3268 zscale_filter_deps="libzimg const_nan"
3269 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3270 vpp_qsv_filter_deps="libmfx"
3271 vpp_qsv_filter_select="qsvvpp"
3272
3273 # examples
3274 avio_dir_cmd_deps="avformat avutil"
3275 avio_reading_deps="avformat avcodec avutil"
3276 decode_audio_example_deps="avcodec avutil"
3277 decode_video_example_deps="avcodec avutil"
3278 demuxing_decoding_example_deps="avcodec avformat avutil"
3279 encode_audio_example_deps="avcodec avutil"
3280 encode_video_example_deps="avcodec avutil"
3281 extract_mvs_example_deps="avcodec avformat avutil"
3282 filter_audio_example_deps="avfilter avutil"
3283 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3284 filtering_video_example_deps="avfilter avcodec avformat avutil"
3285 http_multiclient_example_deps="avformat avutil fork"
3286 hw_decode_example_deps="avcodec avformat avutil"
3287 metadata_example_deps="avformat avutil"
3288 muxing_example_deps="avcodec avformat avutil swscale"
3289 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
3290 remuxing_example_deps="avcodec avformat avutil"
3291 resampling_audio_example_deps="avutil swresample"
3292 scaling_video_example_deps="avutil swscale"
3293 transcode_aac_example_deps="avcodec avformat swresample"
3294 transcoding_example_deps="avfilter avcodec avformat avutil"
3295
3296 # EXTRALIBS_LIST
3297 cpu_init_extralibs="pthreads_extralibs"
3298 cws2fws_extralibs="zlib_extralibs"
3299
3300 # libraries, in linking order
3301 avcodec_deps="avutil"
3302 avcodec_suggest="libm"
3303 avcodec_select="null_bsf"
3304 avdevice_deps="avformat avcodec avutil"
3305 avdevice_suggest="libm"
3306 avfilter_deps="avutil"
3307 avfilter_suggest="libm"
3308 avformat_deps="avcodec avutil"
3309 avformat_suggest="libm network zlib"
3310 avresample_deps="avutil"
3311 avresample_suggest="libm"
3312 avutil_suggest="clock_gettime cuda libm libdrm libmfx opencl user32 vaapi videotoolbox corefoundation corevideo coremedia wincrypt"
3313 postproc_deps="avutil gpl"
3314 postproc_suggest="libm"
3315 swresample_deps="avutil"
3316 swresample_suggest="libm libsoxr"
3317 swscale_deps="avutil"
3318 swscale_suggest="libm"
3319
3320 avcodec_extralibs="pthreads_extralibs iconv_extralibs"
3321 avfilter_extralibs="pthreads_extralibs"
3322 avutil_extralibs="d3d11va_extralibs nanosleep_extralibs pthreads_extralibs vaapi_drm_extralibs vaapi_x11_extralibs vdpau_x11_extralibs"
3323
3324 # programs
3325 ffmpeg_deps="avcodec avfilter avformat swresample"
3326 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3327                null_filter
3328                trim_filter"
3329 ffmpeg_suggest="ole32 psapi shell32"
3330 ffplay_deps="avcodec avformat swscale swresample sdl2"
3331 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3332 ffplay_suggest="shell32"
3333 ffprobe_deps="avcodec avformat"
3334 ffprobe_suggest="shell32"
3335 ffserver_deps="avformat fork sarestart"
3336 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
3337
3338 # documentation
3339 podpages_deps="perl"
3340 manpages_deps="perl pod2man"
3341 htmlpages_deps="perl"
3342 htmlpages_deps_any="makeinfo_html texi2html"
3343 txtpages_deps="perl makeinfo"
3344 doc_deps_any="manpages htmlpages podpages txtpages"
3345
3346 # default parameters
3347
3348 logfile="ffbuild/config.log"
3349
3350 # installation paths
3351 prefix_default="/usr/local"
3352 bindir_default='${prefix}/bin'
3353 datadir_default='${prefix}/share/ffmpeg'
3354 docdir_default='${prefix}/share/doc/ffmpeg'
3355 incdir_default='${prefix}/include'
3356 libdir_default='${prefix}/lib'
3357 mandir_default='${prefix}/share/man'
3358
3359 # toolchain
3360 ar_default="ar"
3361 cc_default="gcc"
3362 cxx_default="g++"
3363 host_cc_default="gcc"
3364 doxygen_default="doxygen"
3365 install="install"
3366 ln_s_default="ln -s -f"
3367 nm_default="nm -g"
3368 pkg_config_default=pkg-config
3369 ranlib_default="ranlib"
3370 strip_default="strip"
3371 version_script='--version-script'
3372 x86asmexe_default="nasm"
3373 windres_default="windres"
3374 nvcc_default="nvcc"
3375 nvccflags_default="-gencode arch=compute_30,code=sm_30 -O2"
3376 striptype="direct"
3377
3378 # OS
3379 target_os_default=$(tolower $(uname -s))
3380 host_os=$target_os_default
3381
3382 # machine
3383 if test "$target_os_default" = aix; then
3384     arch_default=$(uname -p)
3385     strip_default="strip -X32_64"
3386 else
3387     arch_default=$(uname -m)
3388 fi
3389 cpu="generic"
3390 intrinsics="none"
3391
3392 # configurable options
3393 enable $PROGRAM_LIST
3394 enable $DOCUMENT_LIST
3395 enable $EXAMPLE_LIST
3396 enable $(filter_out avresample $LIBRARY_LIST)
3397 enable stripping
3398
3399 enable asm
3400 enable debug
3401 enable doc
3402 enable faan faandct faanidct
3403 enable optimizations
3404 enable runtime_cpudetect
3405 enable safe_bitstream_reader
3406 enable static
3407 enable swscale_alpha
3408 enable valgrind_backtrace
3409
3410 sws_max_filter_size_default=256
3411 set_default sws_max_filter_size
3412
3413 # internal components are enabled by default
3414 enable $EXTRALIBS_LIST
3415
3416 # Avoid external, non-system, libraries getting enabled by dependency resolution
3417 disable $EXTERNAL_LIBRARY_LIST $HWACCEL_LIBRARY_LIST
3418
3419 # build settings
3420 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3421 LIBPREF="lib"
3422 LIBSUF=".a"
3423 FULLNAME='$(NAME)$(BUILDSUF)'
3424 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3425 SLIBPREF="lib"
3426 SLIBSUF=".so"
3427 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3428 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3429 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3430 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3431 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3432 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3433 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
3434
3435 asflags_filter=echo
3436 cflags_filter=echo
3437 ldflags_filter=echo
3438
3439 AS_C='-c'
3440 AS_O='-o $@'
3441 CC_C='-c'
3442 CC_E='-E -o $@'
3443 CC_O='-o $@'
3444 CXX_C='-c'
3445 CXX_O='-o $@'
3446 OBJCC_C='-c'
3447 OBJCC_E='-E -o $@'
3448 OBJCC_O='-o $@'
3449 X86ASM_O='-o $@'
3450 LD_O='-o $@'
3451 LD_LIB='-l%'
3452 LD_PATH='-L'
3453 HOSTCC_C='-c'
3454 HOSTCC_E='-E -o $@'
3455 HOSTCC_O='-o $@'
3456 HOSTLD_O='-o $@'
3457 NVCC_C='-c'
3458 NVCC_O='-o $@'
3459
3460 host_extralibs='-lm'
3461 host_cflags_filter=echo
3462 host_ldflags_filter=echo
3463
3464 target_path='$(CURDIR)'
3465
3466 # since the object filename is not given with the -MM flag, the compiler
3467 # is only able to print the basename, and we must add the path ourselves
3468 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3469 DEPFLAGS='-MM'
3470
3471 mkdir -p ffbuild
3472
3473 # find source path
3474 if test -f configure; then
3475     source_path=.
3476 else
3477     source_path=$(cd $(dirname "$0"); pwd)
3478     case "$source_path" in
3479         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3480     esac
3481     test -e "$source_path/config.h" &&
3482         die "Out of tree builds are impossible with config.h in source dir."
3483 fi
3484
3485 for v in "$@"; do
3486     r=${v#*=}
3487     l=${v%"$r"}
3488     r=$(sh_quote "$r")
3489     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3490 done
3491
3492 find_things(){
3493     thing=$1
3494     pattern=$2
3495     file=$source_path/$3
3496     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
3497 }
3498
3499 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
3500 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
3501 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
3502 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
3503 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
3504 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
3505 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
3506 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
3507 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
3508
3509 find_things_extern(){
3510     thing=$1
3511     pattern=$2
3512     file=$source_path/$3
3513     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
3514 }
3515
3516 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3517 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3518
3519 AVCODEC_COMPONENTS_LIST="
3520     $BSF_LIST
3521     $DECODER_LIST
3522     $ENCODER_LIST
3523     $HWACCEL_LIST
3524     $PARSER_LIST
3525 "
3526
3527 AVDEVICE_COMPONENTS_LIST="
3528     $INDEV_LIST
3529     $OUTDEV_LIST
3530 "
3531
3532 AVFILTER_COMPONENTS_LIST="
3533     $FILTER_LIST
3534 "
3535
3536 AVFORMAT_COMPONENTS_LIST="
3537     $DEMUXER_LIST
3538     $MUXER_LIST
3539     $PROTOCOL_LIST
3540 "
3541
3542 ALL_COMPONENTS="
3543     $AVCODEC_COMPONENTS_LIST
3544     $AVDEVICE_COMPONENTS_LIST
3545     $AVFILTER_COMPONENTS_LIST
3546     $AVFORMAT_COMPONENTS_LIST
3547 "
3548
3549 for n in $COMPONENT_LIST; do
3550     v=$(toupper ${n%s})_LIST
3551     eval enable \$$v
3552     eval ${n}_if_any="\$$v"
3553 done
3554
3555 enable $ARCH_EXT_LIST
3556
3557 die_unknown(){
3558     echo "Unknown option \"$1\"."
3559     echo "See $0 --help for available options."
3560     exit 1
3561 }
3562
3563 print_in_columns() {
3564     cols=$(expr $ncols / 24)
3565     cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
3566 }
3567
3568 show_list() {
3569     suffix=_$1
3570     shift
3571     echo $* | sed s/$suffix//g | print_in_columns
3572     exit 0
3573 }
3574
3575 rand_list(){
3576     IFS=', '
3577     set -- $*
3578     unset IFS
3579     for thing; do
3580         comp=${thing%:*}
3581         prob=${thing#$comp}
3582         prob=${prob#:}
3583         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3584         echo "prob ${prob:-0.5}"
3585         printf '%s\n' $comp
3586     done
3587 }
3588
3589 do_random(){
3590     action=$1
3591     shift
3592     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3593     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3594 }
3595
3596 for opt do
3597     optval="${opt#*=}"
3598     case "$opt" in
3599         --extra-ldflags=*)
3600             add_ldflags $optval
3601         ;;
3602         --extra-ldexeflags=*)
3603             add_ldexeflags $optval
3604         ;;
3605         --extra-ldsoflags=*)
3606             add_ldsoflags $optval
3607         ;;
3608         --extra-ldlibflags=*)
3609             warn "The --extra-ldlibflags option is only provided for compatibility and will be\n"\
3610                  "removed in the future. Use --extra-ldsoflags instead."
3611             add_ldsoflags $optval
3612         ;;
3613         --extra-libs=*)
3614             add_extralibs $optval
3615         ;;
3616         --disable-devices)
3617             disable $INDEV_LIST $OUTDEV_LIST
3618         ;;
3619         --enable-debug=*)
3620             debuglevel="$optval"
3621         ;;
3622         --disable-programs)
3623             disable $PROGRAM_LIST
3624         ;;
3625         --disable-everything)
3626             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3627         ;;
3628         --disable-all)
3629             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3630             disable $LIBRARY_LIST $PROGRAM_LIST doc
3631             enable avutil
3632         ;;
3633         --enable-random|--disable-random)
3634             action=${opt%%-random}
3635             do_random ${action#--} $COMPONENT_LIST
3636         ;;
3637         --enable-random=*|--disable-random=*)
3638             action=${opt%%-random=*}
3639             do_random ${action#--} $optval
3640         ;;
3641         --enable-sdl)
3642             enable sdl2
3643         ;;
3644         --enable-*=*|--disable-*=*)
3645             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3646             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3647             eval list=\$$(toupper $thing)_LIST
3648             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3649             list=$(filter "$name" $list)
3650             [ "$list" = "" ] && warn "Option $opt did not match anything"
3651             $action $list
3652         ;;
3653         --enable-yasm|--disable-yasm)
3654             warn "The ${opt} option is only provided for compatibility and will be\n"\
3655                  "removed in the future. Use --enable-x86asm / --disable-x86asm instead."
3656             test $opt = --enable-yasm && x86asm=yes || x86asm=no
3657         ;;
3658         --yasmexe=*)
3659             warn "The --yasmexe option is only provided for compatibility and will be\n"\
3660                  "removed in the future. Use --x86asmexe instead."
3661             x86asmexe="$optval"
3662         ;;
3663         --enable-?*|--disable-?*)
3664             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3665             if is_in $option $COMPONENT_LIST; then
3666                 test $action = disable && action=unset
3667                 eval $action \$$(toupper ${option%s})_LIST
3668             elif is_in $option $CMDLINE_SELECT; then
3669                 $action $option
3670             else
3671                 die_unknown $opt
3672             fi
3673         ;;
3674         --list-*)
3675             NAME="${opt#--list-}"
3676             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3677             NAME=${NAME%s}
3678             eval show_list $NAME \$$(toupper $NAME)_LIST
3679         ;;
3680         --help|-h) show_help
3681         ;;
3682         --quiet|-q) quiet=yes
3683         ;;
3684         --fatal-warnings) enable fatal_warnings
3685         ;;
3686         --libfuzzer=*)
3687             libfuzzer_path="$optval"
3688         ;;
3689         *)
3690             optname="${opt%%=*}"
3691             optname="${optname#--}"
3692             optname=$(echo "$optname" | sed 's/-/_/g')
3693             if is_in $optname $CMDLINE_SET; then
3694                 eval $optname='$optval'
3695             elif is_in $optname $CMDLINE_APPEND; then
3696                 append $optname "$optval"
3697             else
3698                 die_unknown $opt
3699             fi
3700         ;;
3701     esac
3702 done
3703
3704 for e in $env; do
3705     eval "export $e"
3706 done
3707
3708 if disabled autodetect; then
3709
3710     # Unless iconv is explicitely disabled by the user, we still want to probe
3711     # for the iconv from the libc.
3712     disabled iconv || enable libc_iconv
3713
3714     disable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3715     disable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3716 fi
3717 # Mark specifically enabled, but normally autodetected libraries as requested.
3718 for lib in $AUTODETECT_LIBS; do
3719     enabled $lib && request $lib
3720 done
3721 #TODO: switch to $AUTODETECT_LIBS when $THREADS_LIST is supported the same way
3722 enable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3723 enable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3724
3725 disabled logging && logfile=/dev/null
3726
3727 die_license_disabled() {
3728     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
3729 }
3730
3731 die_license_disabled_gpl() {
3732     enabled $1 || { enabled $v && die "$v is incompatible with the gpl and --enable-$1 is not specified."; }
3733 }
3734
3735 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3736 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3737
3738 enabled gpl && map "die_license_disabled_gpl nonfree" $EXTERNAL_LIBRARY_NONFREE_LIST
3739 map "die_license_disabled nonfree" $HWACCEL_LIBRARY_NONFREE_LIST
3740
3741 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3742
3743 enabled_all gnutls openssl &&
3744     die "GnuTLS and OpenSSL must not be enabled at the same time."
3745
3746 # Disable all the library-specific components if the library itself
3747 # is disabled, see AVCODEC_LIST and following _LIST variables.
3748
3749 disable_components(){
3750     disabled ${1} && disable $(
3751         eval components="\$$(toupper ${1})_COMPONENTS"
3752         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
3753     )
3754 }
3755
3756 map 'disable_components $v' $LIBRARY_LIST
3757
3758 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
3759 set >> $logfile
3760
3761 test -n "$valgrind" && toolchain="valgrind-memcheck"
3762
3763 enabled ossfuzz && {
3764     add_cflags  -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp -fno-omit-frame-pointer
3765     add_ldflags -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp
3766 }
3767
3768 case "$toolchain" in
3769     *-asan)
3770         cc_default="${toolchain%-asan}"
3771         add_cflags  -fsanitize=address
3772         add_ldflags -fsanitize=address
3773     ;;
3774     *-msan)
3775         cc_default="${toolchain%-msan}"
3776         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
3777         add_ldflags -fsanitize=memory
3778     ;;
3779     *-tsan)
3780         cc_default="${toolchain%-tsan}"
3781         add_cflags  -fsanitize=thread -fPIE
3782         add_ldflags -fsanitize=thread -pie
3783         case "$toolchain" in
3784             gcc-tsan)
3785                 add_cflags  -fPIC
3786                 add_ldflags -fPIC
3787                 ;;
3788         esac
3789     ;;
3790     *-usan)
3791         cc_default="${toolchain%-usan}"
3792         add_cflags  -fsanitize=undefined
3793         add_ldflags -fsanitize=undefined
3794     ;;
3795     valgrind-*)
3796         target_exec_default="valgrind"
3797         case "$toolchain" in
3798             valgrind-massif)
3799                 target_exec_args="--tool=massif --alloc-fn=av_malloc --alloc-fn=av_mallocz --alloc-fn=av_calloc --alloc-fn=av_fast_padded_malloc --alloc-fn=av_fast_malloc --alloc-fn=av_realloc_f --alloc-fn=av_fast_realloc --alloc-fn=av_realloc"
3800                 ;;
3801             valgrind-memcheck)
3802                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3803                 ;;
3804         esac
3805     ;;
3806     msvc)
3807         # Check whether the current MSVC version needs the C99 converter.
3808         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3809         # support enough of C99 to build ffmpeg. Default to the new
3810         # behaviour if the regexp was unable to match anything, since this
3811         # successfully parses the version number of existing supported
3812         # versions that require the converter (MSVC 2010 and 2012).
3813         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3814         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3815             cc_default="cl"
3816             cxx_default="cl"
3817         else
3818             cc_default="c99wrap cl"
3819             cxx_default="c99wrap cl"
3820         fi
3821         ld_default="$source_path/compat/windows/mslink"
3822         nm_default="dumpbin -symbols"
3823         ar_default="lib"
3824         case "$arch" in
3825         aarch64|arm64)
3826             as_default="armasm64"
3827             ;;
3828         arm*)
3829             as_default="armasm"
3830             ;;
3831         esac
3832         target_os_default="win32"
3833         # Use a relative path for TMPDIR. This makes sure all the
3834         # ffconf temp files are written with a relative path, avoiding
3835         # issues with msys/win32 path conversion for MSVC parameters
3836         # such as -Fo<file> or -out:<file>.
3837         TMPDIR=.
3838     ;;
3839     icl)
3840         cc_default="icl"
3841         ld_default="xilink"
3842         nm_default="dumpbin -symbols"
3843         ar_default="xilib"
3844         target_os_default="win32"
3845         TMPDIR=.
3846     ;;
3847     gcov)
3848         add_cflags  -fprofile-arcs -ftest-coverage
3849         add_ldflags -fprofile-arcs -ftest-coverage
3850     ;;
3851     llvm-cov)
3852         add_cflags -fprofile-arcs -ftest-coverage
3853         add_ldflags --coverage
3854     ;;
3855     hardened)
3856         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3857         add_cflags   -fno-strict-overflow -fstack-protector-all
3858         add_ldflags  -Wl,-z,relro -Wl,-z,now
3859         add_cflags   -fPIE
3860         add_ldexeflags -fPIE -pie
3861     ;;
3862     ?*)
3863         die "Unknown toolchain $toolchain"
3864     ;;
3865 esac
3866
3867 test -n "$cross_prefix" && enable cross_compile
3868
3869 if enabled cross_compile; then
3870     test -n "$arch" && test -n "$target_os" ||
3871         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
3872 fi
3873
3874 ar_default="${cross_prefix}${ar_default}"
3875 cc_default="${cross_prefix}${cc_default}"
3876 cxx_default="${cross_prefix}${cxx_default}"
3877 nm_default="${cross_prefix}${nm_default}"
3878 pkg_config_default="${cross_prefix}${pkg_config_default}"
3879 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
3880     ranlib_default="${cross_prefix}${ranlib_default} -D"
3881 else
3882     ranlib_default="${cross_prefix}${ranlib_default}"
3883 fi
3884 strip_default="${cross_prefix}${strip_default}"
3885 windres_default="${cross_prefix}${windres_default}"
3886
3887 sysinclude_default="${sysroot}/usr/include"
3888
3889 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3890     target_exec target_os x86asmexe nvcc
3891 enabled cross_compile || host_cc_default=$cc
3892 set_default host_cc
3893
3894 pkg_config_fail_message=""
3895 if ! $pkg_config --version >/dev/null 2>&1; then
3896     warn "$pkg_config not found, library detection may fail."
3897     pkg_config=false
3898 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
3899     pkg_config_fail_message="
3900 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
3901 fi
3902
3903 if test $doxygen != $doxygen_default && \
3904   ! $doxygen --version >/dev/null 2>&1; then
3905     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3906 fi
3907
3908 exesuf() {
3909     case $1 in
3910         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3911     esac
3912 }
3913
3914 EXESUF=$(exesuf $target_os)
3915 HOSTEXESUF=$(exesuf $host_os)
3916
3917 # set temporary file name
3918 : ${TMPDIR:=$TEMPDIR}
3919 : ${TMPDIR:=$TMP}
3920 : ${TMPDIR:=/tmp}
3921
3922 if [ -n "$tempprefix" ] ; then
3923     mktemp(){
3924         tmpname="$tempprefix.${HOSTNAME}.${UID}"
3925         echo "$tmpname"
3926         mkdir "$tmpname"
3927     }
3928 elif ! check_cmd mktemp -u XXXXXX; then
3929     # simple replacement for missing mktemp
3930     # NOT SAFE FOR GENERAL USE
3931     mktemp(){
3932         tmpname="${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3933         echo "$tmpname"
3934         mkdir "$tmpname"
3935     }
3936 fi
3937
3938 FFTMPDIR=$(mktemp -d "${TMPDIR}/ffconf.XXXXXXXX" 2> /dev/null) ||
3939     die "Unable to create temporary directory in $TMPDIR."
3940
3941 tmpfile(){
3942     tmp="${FFTMPDIR}/test"$2
3943     (set -C; exec > $tmp) 2> /dev/null ||
3944         die "Unable to create temporary file in $FFTMPDIR."
3945     eval $1=$tmp
3946 }
3947
3948 trap 'rm -rf -- "$FFTMPDIR"' EXIT
3949 trap 'exit 2' INT
3950
3951 tmpfile TMPASM .asm
3952 tmpfile TMPC   .c
3953 tmpfile TMPCPP .cpp
3954 tmpfile TMPE   $EXESUF
3955 tmpfile TMPH   .h
3956 tmpfile TMPM   .m
3957 tmpfile TMPO   .o
3958 tmpfile TMPS   .S
3959 tmpfile TMPSH  .sh
3960 tmpfile TMPV   .ver
3961
3962 unset -f mktemp
3963
3964 chmod +x $TMPE
3965
3966 # make sure we can execute files in $TMPDIR
3967 cat > $TMPSH 2>> $logfile <<EOF
3968 #! /bin/sh
3969 EOF
3970 chmod +x $TMPSH >> $logfile 2>&1
3971 if ! $TMPSH >> $logfile 2>&1; then
3972     cat <<EOF
3973 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3974 variable to another directory and make sure that it is not mounted noexec.
3975 EOF
3976     die "Sanity test failed."
3977 fi
3978
3979 armasm_flags(){
3980     for flag; do
3981         case $flag in
3982             # Filter out MSVC cl.exe options from cflags that shouldn't
3983             # be passed to gas-preprocessor
3984             -M[TD]*)                                            ;;
3985             *)                  echo $flag                      ;;
3986         esac
3987    done
3988 }
3989
3990 cparser_flags(){
3991     for flag; do
3992         case $flag in
3993             -Wno-switch)             echo -Wno-switch-enum ;;
3994             -Wno-format-zero-length) ;;
3995             -Wdisabled-optimization) ;;
3996             -Wno-pointer-sign)       echo -Wno-other ;;
3997             *)                       echo $flag ;;
3998         esac
3999     done
4000 }
4001
4002 msvc_common_flags(){
4003     for flag; do
4004         case $flag in
4005             # In addition to specifying certain flags under the compiler
4006             # specific filters, they must be specified here as well or else the
4007             # generic catch all at the bottom will print the original flag.
4008             -Wall)                ;;
4009             -Wextra)              ;;
4010             -std=c99)             ;;
4011             # Common flags
4012             -fomit-frame-pointer) ;;
4013             -g)                   echo -Z7 ;;
4014             -fno-math-errno)      ;;
4015             -fno-common)          ;;
4016             -fno-signed-zeros)    ;;
4017             -fPIC)                ;;
4018             -mthumb)              ;;
4019             -march=*)             ;;
4020             -lz)                  echo zlib.lib ;;
4021             -lx264)               echo libx264.lib ;;
4022             -lstdc++)             ;;
4023             -l*)                  echo ${flag#-l}.lib ;;
4024             -LARGEADDRESSAWARE)   echo $flag ;;
4025             -L*)                  echo -libpath:${flag#-L} ;;
4026             *)                    echo $flag ;;
4027         esac
4028     done
4029 }
4030
4031 msvc_flags(){
4032     msvc_common_flags "$@"
4033     for flag; do
4034         case $flag in
4035             -Wall)                echo -W3 -wd4018 -wd4146 -wd4244 -wd4305     \
4036                                        -wd4554 ;;
4037             -Wextra)              echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
4038                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
4039                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
4040                                        -wd4307 \
4041                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
4042         esac
4043     done
4044 }
4045
4046 icl_flags(){
4047     msvc_common_flags "$@"
4048     for flag; do
4049         case $flag in
4050             # Despite what Intel's documentation says -Wall, which is supported
4051             # on Windows, does enable remarks so disable them here.
4052             -Wall)                echo $flag -Qdiag-disable:remark ;;
4053             -std=c99)             echo -Qstd=c99 ;;
4054             -flto)                echo -ipo ;;
4055         esac
4056     done
4057 }
4058
4059 icc_flags(){
4060     for flag; do
4061         case $flag in
4062             -flto)                echo -ipo ;;
4063             *)                    echo $flag ;;
4064         esac
4065     done
4066 }
4067
4068 pgi_flags(){
4069     for flag; do
4070         case $flag in
4071             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
4072             -fomit-frame-pointer) echo -Mnoframe ;;
4073             -g)                   echo -gopt ;;
4074             *)                    echo $flag ;;
4075         esac
4076     done
4077 }
4078
4079 suncc_flags(){
4080     for flag; do
4081         case $flag in
4082             -march=*|-mcpu=*)
4083                 case "${flag#*=}" in
4084                     native)                   echo -xtarget=native       ;;
4085                     v9|niagara)               echo -xarch=sparc          ;;
4086                     ultrasparc)               echo -xarch=sparcvis       ;;
4087                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
4088                     i586|pentium)             echo -xchip=pentium        ;;
4089                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
4090                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
4091                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
4092                     pentium4*)          echo -xtarget=pentium4           ;;
4093                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
4094                     *-sse3)             echo -xarch=sse3                 ;;
4095                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
4096                     bonnell)                   echo -xarch=ssse3         ;;
4097                     corei7|nehalem)            echo -xtarget=nehalem     ;;
4098                     westmere)                  echo -xtarget=westmere    ;;
4099                     silvermont)                echo -xarch=sse4_2        ;;
4100                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
4101                     core-avx*|ivybridge|haswell|broadwell|skylake*|knl)
4102                                                echo -xarch=avx           ;;
4103                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
4104                     btver1)                    echo -xarch=amdsse4a      ;;
4105                     btver2|bdver*|znver*)      echo -xarch=avx           ;;
4106                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
4107                     k8|opteron|athlon64|athlon-fx)
4108                                                echo -xarch=sse2a         ;;
4109                     athlon*)                   echo -xarch=pentium_proa  ;;
4110                 esac
4111                 ;;
4112             -std=c99)             echo -xc99              ;;
4113             -fomit-frame-pointer) echo -xregs=frameptr    ;;
4114             -fPIC)                echo -KPIC -xcode=pic32 ;;
4115             -W*,*)                echo $flag              ;;
4116             -f*-*|-W*|-mimpure-text)                      ;;
4117             -shared)              echo -G                 ;;
4118             *)                    echo $flag              ;;
4119         esac
4120     done
4121 }
4122
4123 tms470_flags(){
4124     for flag; do
4125         case $flag in
4126             -march=*|-mcpu=*)
4127                 case "${flag#*=}" in
4128                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
4129                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
4130                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
4131                     armv6*|arm11*)          echo -mv=6   ;;
4132                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
4133                                             echo -mv=5e  ;;
4134                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
4135                 esac
4136                 ;;
4137             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
4138             -mfpu=vfp)      echo --float_support=vfpv2        ;;
4139             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
4140             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
4141             -msoft-float)   echo --float_support=vfplib       ;;
4142             -O[0-3]|-mf=*)  echo $flag                        ;;
4143             -g)             echo -g -mn                       ;;
4144             -pds=*)         echo $flag                        ;;
4145             -D*|-I*)        echo $flag                        ;;
4146             --gcc|--abi=*)  echo $flag                        ;;
4147             -me)            echo $flag                        ;;
4148         esac
4149     done
4150 }
4151
4152 probe_cc(){
4153     pfx=$1
4154     _cc=$2
4155     first=$3
4156
4157     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
4158     unset _ld_o _ldflags _ld_lib _ld_path
4159     unset _depflags _DEPCMD _DEPFLAGS
4160     _flags_filter=echo
4161
4162     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
4163         true # no-op to avoid reading stdin in following checks
4164     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
4165         _type=llvm_gcc
4166         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
4167         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
4168         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4169         _cflags_speed='-O3'
4170         _cflags_size='-Os'
4171     elif $_cc -v 2>&1 | grep -qi ^gcc; then
4172         _type=gcc
4173         gcc_version=$($_cc --version | head -n1)
4174         gcc_basever=$($_cc -dumpversion)
4175         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
4176         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
4177         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
4178         case $gcc_basever in
4179             2) ;;
4180             2.*) ;;
4181             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
4182         esac
4183         if [ "$first" = true ]; then
4184             case $gcc_basever in
4185                 4.2*)
4186                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
4187             esac
4188         fi
4189         _cflags_speed='-O3'
4190         _cflags_size='-Os'
4191     elif $_cc --version 2>/dev/null | grep -q ^icc; then
4192         _type=icc
4193         _ident=$($_cc --version | head -n1)
4194         _depflags='-MMD'
4195         _cflags_speed='-O3'
4196         _cflags_size='-Os'
4197         _cflags_noopt='-O1'
4198         _flags_filter=icc_flags
4199     elif $_cc -v 2>&1 | grep -q xlc; then
4200         _type=xlc
4201         _ident=$($_cc -qversion 2>/dev/null | head -n1)
4202         _cflags_speed='-O5'
4203         _cflags_size='-O5 -qcompact'
4204     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
4205         test -d "$sysroot" || die "No valid sysroot specified."
4206         _type=armcc
4207         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
4208         armcc_conf="$PWD/armcc.conf"
4209         $_cc --arm_linux_configure                 \
4210              --arm_linux_config_file="$armcc_conf" \
4211              --configure_sysroot="$sysroot"        \
4212              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
4213              die "Error creating armcc configuration file."
4214         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
4215         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
4216         as_default="${cross_prefix}gcc"
4217         _depflags='-MMD'
4218         _cflags_speed='-O3'
4219         _cflags_size='-Os'
4220     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
4221         _type=tms470
4222         _ident=$($_cc -version | head -n1 | tr -s ' ')
4223         _flags='--gcc --abi=eabi -me'
4224         _cc_e='-ppl -fe=$@'
4225         _cc_o='-fe=$@'
4226         _depflags='-ppa -ppd=$(@:.o=.d)'
4227         _cflags_speed='-O3 -mf=5'
4228         _cflags_size='-O3 -mf=2'
4229         _flags_filter=tms470_flags
4230     elif $_cc -v 2>&1 | grep -q clang; then
4231         _type=clang
4232         _ident=$($_cc --version 2>/dev/null | head -n1)
4233         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4234         _cflags_speed='-O3'
4235         _cflags_size='-Oz'
4236     elif $_cc -V 2>&1 | grep -q Sun; then
4237         _type=suncc
4238         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
4239         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
4240         _DEPFLAGS='-xM1 -xc99'
4241         _ldflags='-std=c99'
4242         _cflags_speed='-O5'
4243         _cflags_size='-O5 -xspace'
4244         _flags_filter=suncc_flags
4245     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
4246         _type=pathscale
4247         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4248         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4249         _cflags_speed='-O2'
4250         _cflags_size='-Os'
4251         _flags_filter='filter_out -Wdisabled-optimization'
4252     elif $_cc -v 2>&1 | grep -q Open64; then
4253         _type=open64
4254         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4255         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4256         _cflags_speed='-O2'
4257         _cflags_size='-Os'
4258         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
4259     elif $_cc -V 2>&1 | grep -q Portland; then
4260         _type=pgi
4261         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
4262         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
4263         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
4264         _cflags_size="-O2 -Munroll=c:1 $opt_common"
4265         _cflags_noopt="-O"
4266         _flags_filter=pgi_flags
4267     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
4268         _type=armasm
4269         _ident=$($_cc | head -n1)
4270         # 4509: "This form of conditional instruction is deprecated"
4271         _flags="-nologo -ignore 4509"
4272         _flags_filter=armasm_flags
4273     elif $_cc 2>&1 | grep -q Intel; then
4274         _type=icl
4275         _ident=$($_cc 2>&1 | head -n1)
4276         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
4277         # Not only is O3 broken on 13.x+ but it is slower on all previous
4278         # versions (tested) as well.
4279         _cflags_speed="-O2"
4280         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
4281         if $_cc 2>&1 | grep -q Linker; then
4282             _ld_o='-out:$@'
4283         else
4284             _ld_o='-Fe$@'
4285         fi
4286         _cc_o='-Fo$@'
4287         _cc_e='-P'
4288         _flags_filter=icl_flags
4289         _ld_lib='lib%.a'
4290         _ld_path='-libpath:'
4291         # -Qdiag-error to make icl error when seeing certain unknown arguments
4292         _flags='-nologo -Qdiag-error:4044,10157'
4293         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
4294         # with MSVC which enables it by default.
4295         _cflags='-Qms0 -Qvec- -Qsimd- -GS -fp:precise'
4296         disable stripping
4297     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
4298         # lld can emulate multiple different linkers; in ms link.exe mode,
4299         # the -? parameter gives the help output which contains an identifyable
4300         # string, while it gives an error in other modes.
4301         _type=lld-link
4302         # The link.exe mode doesn't have a switch for getting the version,
4303         # but we can force it back to gnu mode and get the version from there.
4304         _ident=$($_cc -flavor gnu --version 2>/dev/null)
4305         _ld_o='-out:$@'
4306         _flags_filter=msvc_flags
4307         _ld_lib='lib%.a'
4308         _ld_path='-libpath:'
4309     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
4310         _type=msvc
4311         _ident=$($_cc 2>&1 | head -n1)
4312         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
4313         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
4314         _cflags_speed="-O2"
4315         _cflags_size="-O1"
4316         _cflags_noopt="-O1"
4317         if $_cc -nologo- 2>&1 | grep -q Linker; then
4318             _ld_o='-out:$@'
4319         else
4320             _ld_o='-Fe$@'
4321         fi
4322         _cc_o='-Fo$@'
4323         _cc_e='-P -Fi$@'
4324         _flags_filter=msvc_flags
4325         _ld_lib='lib%.a'
4326         _ld_path='-libpath:'
4327         _flags='-nologo'
4328         disable stripping
4329     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
4330         _type=cparser
4331         _ident=$($_cc --version | head -n1)
4332         _depflags='-MMD'
4333         _cflags_speed='-O4'
4334         _cflags_size='-O2'
4335         _flags_filter=cparser_flags
4336     fi
4337
4338     eval ${pfx}_type=\$_type
4339     eval ${pfx}_ident=\$_ident
4340 }
4341
4342 set_ccvars(){
4343     eval ${1}_C=\${_cc_c-\${${1}_C}}
4344     eval ${1}_E=\${_cc_e-\${${1}_E}}
4345     eval ${1}_O=\${_cc_o-\${${1}_O}}
4346
4347     if [ -n "$_depflags" ]; then
4348         eval ${1}_DEPFLAGS=\$_depflags
4349     else
4350         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
4351         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
4352         eval DEP${1}FLAGS=\$_flags
4353     fi
4354 }
4355
4356 probe_cc cc "$cc" "true"
4357 cflags_filter=$_flags_filter
4358 cflags_speed=$_cflags_speed
4359 cflags_size=$_cflags_size
4360 cflags_noopt=$_cflags_noopt
4361 add_cflags $_flags $_cflags
4362 cc_ldflags=$_ldflags
4363 set_ccvars CC
4364 set_ccvars CXX
4365
4366 probe_cc hostcc "$host_cc"
4367 host_cflags_filter=$_flags_filter
4368 host_cflags_speed=$_cflags_speed
4369 add_host_cflags  $_flags $_cflags
4370 set_ccvars HOSTCC
4371
4372 test -n "$cc_type" && enable $cc_type ||
4373     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4374
4375 : ${as_default:=$cc}
4376 : ${objcc_default:=$cc}
4377 : ${dep_cc_default:=$cc}
4378 : ${ld_default:=$cc}
4379 : ${host_ld_default:=$host_cc}
4380 set_default ar as objcc dep_cc ld ln_s host_ld windres
4381
4382 probe_cc as "$as"
4383 asflags_filter=$_flags_filter
4384 add_asflags $_flags $_cflags
4385 set_ccvars AS
4386
4387 probe_cc objcc "$objcc"
4388 objcflags_filter=$_flags_filter
4389 add_objcflags $_flags $_cflags
4390 set_ccvars OBJC
4391
4392 probe_cc ld "$ld"
4393 ldflags_filter=$_flags_filter
4394 add_ldflags $_flags $_ldflags
4395 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4396 LD_O=${_ld_o-$LD_O}
4397 LD_LIB=${_ld_lib-$LD_LIB}
4398 LD_PATH=${_ld_path-$LD_PATH}
4399
4400 probe_cc hostld "$host_ld"
4401 host_ldflags_filter=$_flags_filter
4402 add_host_ldflags $_flags $_ldflags
4403 HOSTLD_O=${_ld_o-$HOSTLD_O}
4404
4405 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4406     probe_cc depcc "$dep_cc"
4407     CCDEP=${_DEPCMD:-$DEPCMD}
4408     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4409     DEPCCFLAGS=$_flags
4410 fi
4411
4412 if $ar 2>&1 | grep -q Microsoft; then
4413     arflags="-nologo"
4414     ar_o='-out:$@'
4415 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
4416     arflags="rq"
4417     ar_o='$@'
4418 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
4419     arflags='-Xany -r -c'
4420     ar_o='$@'
4421 elif $ar 2>&1 | grep -q "\[D\] "; then
4422     arflags="rcD"
4423     ar_o='$@'
4424 else
4425     arflags="rc"
4426     ar_o='$@'
4427 fi
4428
4429 add_cflags $extra_cflags
4430 add_cxxflags $extra_cxxflags
4431 add_objcflags $extra_objcflags
4432 add_asflags $extra_cflags
4433
4434 if test -n "$sysroot"; then
4435     case "$cc_type" in
4436         gcc|llvm_gcc|clang)
4437             add_cppflags --sysroot="$sysroot"
4438             add_ldflags --sysroot="$sysroot"
4439         ;;
4440         tms470)
4441             add_cppflags -I"$sysinclude"
4442             add_ldflags  --sysroot="$sysroot"
4443         ;;
4444     esac
4445 fi
4446
4447 if test "$cpu" = host; then
4448     enabled cross_compile &&
4449         die "--cpu=host makes no sense when cross-compiling."
4450
4451     case "$cc_type" in
4452         gcc|llvm_gcc)
4453             check_native(){
4454                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4455                 sed -n "/cc1.*$1=/{
4456                             s/.*$1=\\([^ ]*\\).*/\\1/
4457                             p
4458                             q
4459                         }" $TMPE
4460             }
4461             cpu=$(check_native -march || check_native -mcpu)
4462         ;;
4463         clang)
4464             check_native(){
4465                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4466                 sed -n "/cc1.*-target-cpu /{
4467                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4468                             p
4469                             q
4470                         }" $TMPE
4471             }
4472             cpu=$(check_native -march)
4473         ;;
4474     esac
4475
4476     test "${cpu:-host}" = host &&
4477         die "--cpu=host not supported with compiler $cc"
4478 fi
4479
4480 # Deal with common $arch aliases
4481 case "$arch" in
4482     aarch64|arm64)
4483         arch="aarch64"
4484     ;;
4485     arm*|iPad*|iPhone*)
4486         arch="arm"
4487     ;;
4488     mips*|IP*)
4489         case "$arch" in
4490         *el)
4491             add_cppflags -EL
4492             add_ldflags -EL
4493         ;;
4494         *eb)
4495             add_cppflags -EB
4496             add_ldflags -EB
4497         ;;
4498         esac
4499         arch="mips"
4500     ;;
4501     parisc*|hppa*)
4502         arch="parisc"
4503     ;;
4504     "Power Macintosh"|ppc*|powerpc*)
4505         arch="ppc"
4506     ;;
4507     s390|s390x)
4508         arch="s390"
4509     ;;
4510     sh4|sh)
4511         arch="sh4"
4512     ;;
4513     sun4*|sparc*)
4514         arch="sparc"
4515     ;;
4516     tilegx|tile-gx)
4517         arch="tilegx"
4518     ;;
4519     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4520         arch="x86"
4521     ;;
4522 esac
4523
4524 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4525 enable $arch
4526
4527 # Add processor-specific flags
4528 if enabled aarch64; then
4529
4530     case $cpu in
4531         armv*)
4532             cpuflags="-march=$cpu"
4533         ;;
4534         *)
4535             cpuflags="-mcpu=$cpu"
4536         ;;
4537     esac
4538
4539 elif enabled alpha; then
4540
4541     cpuflags="-mcpu=$cpu"
4542
4543 elif enabled arm; then
4544
4545     check_arm_arch() {
4546         check_cpp_condition stddef.h \
4547             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4548             $cpuflags
4549     }
4550
4551     probe_arm_arch() {
4552         if   check_arm_arch 4;        then echo armv4
4553         elif check_arm_arch 4T;       then echo armv4t
4554         elif check_arm_arch 5;        then echo armv5
4555         elif check_arm_arch 5E;       then echo armv5e
4556         elif check_arm_arch 5T;       then echo armv5t
4557         elif check_arm_arch 5TE;      then echo armv5te
4558         elif check_arm_arch 5TEJ;     then echo armv5te
4559         elif check_arm_arch 6;        then echo armv6
4560         elif check_arm_arch 6J;       then echo armv6j
4561         elif check_arm_arch 6K;       then echo armv6k
4562         elif check_arm_arch 6Z;       then echo armv6z
4563         elif check_arm_arch 6ZK;      then echo armv6zk
4564         elif check_arm_arch 6T2;      then echo armv6t2
4565         elif check_arm_arch 7;        then echo armv7
4566         elif check_arm_arch 7A  7_A;  then echo armv7-a
4567         elif check_arm_arch 7S;       then echo armv7-a
4568         elif check_arm_arch 7R  7_R;  then echo armv7-r
4569         elif check_arm_arch 7M  7_M;  then echo armv7-m
4570         elif check_arm_arch 7EM 7E_M; then echo armv7-m
4571         elif check_arm_arch 8A  8_A;  then echo armv8-a
4572         fi
4573     }
4574
4575     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4576
4577     case $cpu in
4578         armv*)
4579             cpuflags="-march=$cpu"
4580             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4581         ;;
4582         *)
4583             cpuflags="-mcpu=$cpu"
4584             case $cpu in
4585                 cortex-a*)                               subarch=armv7a  ;;
4586                 cortex-r*)                               subarch=armv7r  ;;
4587                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4588                 arm11*)                                  subarch=armv6   ;;
4589                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4590                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4591                 *)                             subarch=$(probe_arm_arch) ;;
4592             esac
4593         ;;
4594     esac
4595
4596     case "$subarch" in
4597         armv5t*)    enable fast_clz                ;;
4598         armv[6-8]*)
4599             enable fast_clz
4600             disabled fast_unaligned || enable fast_unaligned
4601             ;;
4602     esac
4603
4604 elif enabled avr32; then
4605
4606     case $cpu in
4607         ap7[02]0[0-2])
4608             subarch="avr32_ap"
4609             cpuflags="-mpart=$cpu"
4610         ;;
4611         ap)
4612             subarch="avr32_ap"
4613             cpuflags="-march=$cpu"
4614         ;;
4615         uc3[ab]*)
4616             subarch="avr32_uc"
4617             cpuflags="-mcpu=$cpu"
4618         ;;
4619         uc)
4620             subarch="avr32_uc"
4621             cpuflags="-march=$cpu"
4622         ;;
4623     esac
4624
4625 elif enabled bfin; then
4626
4627     cpuflags="-mcpu=$cpu"
4628
4629 elif enabled mips; then
4630
4631     cpuflags="-march=$cpu"
4632
4633     if [ "$cpu" != "generic" ]; then
4634         disable mips32r2
4635         disable mips32r5
4636         disable mips64r2
4637         disable mips32r6
4638         disable mips64r6
4639         disable loongson2
4640         disable loongson3
4641
4642         case $cpu in
4643             24kc|24kf*|24kec|34kc|1004kc|24kef*|34kf*|1004kf*|74kc|74kf)
4644                 enable mips32r2
4645                 disable msa
4646             ;;
4647             p5600|i6400|p6600)
4648                 disable mipsdsp
4649                 disable mipsdspr2
4650             ;;
4651             loongson*)
4652                 enable loongson2
4653                 enable loongson3
4654                 enable local_aligned
4655                 enable simd_align_16
4656                 enable fast_64bit
4657                 enable fast_clz
4658                 enable fast_cmov
4659                 enable fast_unaligned
4660                 disable aligned_stack
4661                 disable mipsfpu
4662                 disable mipsdsp
4663                 disable mipsdspr2
4664                 case $cpu in
4665                     loongson3*)
4666                         cpuflags="-march=loongson3a -mhard-float -fno-expensive-optimizations"
4667                     ;;
4668                     loongson2e)
4669                         cpuflags="-march=loongson2e -mhard-float -fno-expensive-optimizations"
4670                     ;;
4671                     loongson2f)
4672                         cpuflags="-march=loongson2f -mhard-float -fno-expensive-optimizations"
4673                     ;;
4674                 esac
4675             ;;
4676             *)
4677                 # Unknown CPU. Disable everything.
4678                 warn "unknown CPU. Disabling all MIPS optimizations."
4679                 disable mipsfpu
4680                 disable mipsdsp
4681                 disable mipsdspr2
4682                 disable msa
4683                 disable mmi
4684             ;;
4685         esac
4686
4687         case $cpu in
4688             24kc)
4689                 disable mipsfpu
4690                 disable mipsdsp
4691                 disable mipsdspr2
4692             ;;
4693             24kf*)
4694                 disable mipsdsp
4695                 disable mipsdspr2
4696             ;;
4697             24kec|34kc|1004kc)
4698                 disable mipsfpu
4699                 disable mipsdspr2
4700             ;;
4701             24kef*|34kf*|1004kf*)
4702                 disable mipsdspr2
4703             ;;
4704             74kc)
4705                 disable mipsfpu
4706             ;;
4707             p5600)
4708                 enable mips32r5
4709                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
4710             ;;
4711             i6400)
4712                 enable mips64r6
4713                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4714             ;;
4715             p6600)
4716                 enable mips64r6
4717                 check_cflags "-mtune=p6600 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4718             ;;
4719         esac
4720     else
4721         # We do not disable anything. Is up to the user to disable the unwanted features.
4722         warn 'generic cpu selected'
4723     fi
4724
4725 elif enabled ppc; then
4726
4727     disable ldbrx
4728
4729     case $(tolower $cpu) in
4730         601|ppc601|powerpc601)
4731             cpuflags="-mcpu=601"
4732             disable altivec
4733         ;;
4734         603*|ppc603*|powerpc603*)
4735             cpuflags="-mcpu=603"
4736             disable altivec
4737         ;;
4738         604*|ppc604*|powerpc604*)
4739             cpuflags="-mcpu=604"
4740             disable altivec
4741         ;;
4742         g3|75*|ppc75*|powerpc75*)
4743             cpuflags="-mcpu=750"
4744             disable altivec
4745         ;;
4746         g4|745*|ppc745*|powerpc745*)
4747             cpuflags="-mcpu=7450"
4748             disable vsx
4749         ;;
4750         74*|ppc74*|powerpc74*)
4751             cpuflags="-mcpu=7400"
4752             disable vsx
4753         ;;
4754         g5|970|ppc970|powerpc970)
4755             cpuflags="-mcpu=970"
4756             disable vsx
4757         ;;
4758         power[3-6]*)
4759             cpuflags="-mcpu=$cpu"
4760             disable vsx
4761         ;;
4762         power[7-8]*)
4763             cpuflags="-mcpu=$cpu"
4764         ;;
4765         cell)
4766             cpuflags="-mcpu=cell"
4767             enable ldbrx
4768             disable vsx
4769         ;;
4770         e500mc)
4771             cpuflags="-mcpu=e500mc"
4772             disable altivec
4773         ;;
4774         e500v2)
4775             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
4776             disable altivec
4777             disable dcbzl
4778         ;;
4779         e500)
4780             cpuflags="-mcpu=8540 -mhard-float"
4781             disable altivec
4782             disable dcbzl
4783         ;;
4784     esac
4785
4786 elif enabled sparc; then
4787
4788     case $cpu in
4789         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
4790             cpuflags="-mcpu=$cpu"
4791         ;;
4792         ultrasparc*|niagara[234])
4793             cpuflags="-mcpu=$cpu"
4794         ;;
4795     esac
4796
4797 elif enabled x86; then
4798
4799     case $cpu in
4800         i[345]86|pentium)
4801             cpuflags="-march=$cpu"
4802             disable i686
4803             disable mmx
4804         ;;
4805         # targets that do NOT support nopl and conditional mov (cmov)
4806         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
4807             cpuflags="-march=$cpu"
4808             disable i686
4809         ;;
4810         # targets that do support nopl and conditional mov (cmov)
4811         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
4812         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|skylake*|knl\
4813         |amdfam10|barcelona|b[dt]ver*|znver*)
4814             cpuflags="-march=$cpu"
4815             enable i686
4816             enable fast_cmov
4817         ;;
4818         # targets that do support conditional mov but on which it's slow
4819         pentium4|pentium4m|prescott|nocona)
4820             cpuflags="-march=$cpu"
4821             enable i686
4822             disable fast_cmov
4823         ;;
4824     esac
4825
4826 fi
4827
4828 if [ "$cpu" != generic ]; then
4829     add_cflags  $cpuflags
4830     add_asflags $cpuflags
4831     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
4832 fi
4833
4834 # compiler sanity check
4835 check_exec <<EOF
4836 int main(void){ return 0; }
4837 EOF
4838 if test "$?" != 0; then
4839     echo "$cc is unable to create an executable file."
4840     if test -z "$cross_prefix" && ! enabled cross_compile ; then
4841         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
4842         echo "Only do this if you know what cross compiling means."
4843     fi
4844     die "C compiler test failed."
4845 fi
4846
4847 add_cppflags -D_ISOC99_SOURCE
4848 add_cxxflags -D__STDC_CONSTANT_MACROS
4849 check_cxxflags -std=c++11 || check_cxxflags -std=c++0x
4850
4851 # some compilers silently accept -std=c11, so we also need to check that the
4852 # version macro is defined properly
4853 test_cflags_cc -std=c11 ctype.h "__STDC_VERSION__ >= 201112L" &&
4854     add_cflags -std=c11 ||
4855     check_cflags -std=c99
4856
4857 check_cppflags -D_FILE_OFFSET_BITS=64
4858 check_cppflags -D_LARGEFILE_SOURCE
4859
4860 add_host_cppflags -D_ISOC99_SOURCE
4861 check_host_cflags -std=c99
4862 check_host_cflags -Wall
4863 check_host_cflags $host_cflags_speed
4864
4865 check_64bit(){
4866     arch32=$1
4867     arch64=$2
4868     expr=$3
4869     check_code cc "" "int test[2*($expr) - 1]" &&
4870         subarch=$arch64 || subarch=$arch32
4871 }
4872
4873 case "$arch" in
4874     aarch64|alpha|ia64)
4875         spic=$shared
4876     ;;
4877     mips)
4878         check_64bit mips mips64 '_MIPS_SIM > 1'
4879         spic=$shared
4880     ;;
4881     parisc)
4882         check_64bit parisc parisc64 'sizeof(void *) > 4'
4883  &n