Merge commit '29ccc641b17afad058a5c24071ea827865a8b3a9'
[ffmpeg.git] / configure
1 #!/bin/sh
2 #
3 # FFmpeg configure script
4 #
5 # Copyright (c) 2000-2002 Fabrice Bellard
6 # Copyright (c) 2005-2008 Diego Biurrun
7 # Copyright (c) 2005-2008 Mans Rullgard
8 #
9
10 # Prevent locale nonsense from breaking basic text processing.
11 LC_ALL=C
12 export LC_ALL
13
14 # make sure we are running under a compatible shell
15 # try to make this part work with most shells
16
17 try_exec(){
18     echo "Trying shell $1"
19     type "$1" > /dev/null 2>&1 && exec "$@"
20 }
21
22 unset foo
23 (: ${foo%%bar}) 2> /dev/null
24 E1="$?"
25
26 (: ${foo?}) 2> /dev/null
27 E2="$?"
28
29 if test "$E1" != 0 || test "$E2" = 0; then
30     echo "Broken shell detected.  Trying alternatives."
31     export FF_CONF_EXEC
32     if test "0$FF_CONF_EXEC" -lt 1; then
33         FF_CONF_EXEC=1
34         try_exec bash "$0" "$@"
35     fi
36     if test "0$FF_CONF_EXEC" -lt 2; then
37         FF_CONF_EXEC=2
38         try_exec ksh "$0" "$@"
39     fi
40     if test "0$FF_CONF_EXEC" -lt 3; then
41         FF_CONF_EXEC=3
42         try_exec /usr/xpg4/bin/sh "$0" "$@"
43     fi
44     echo "No compatible shell script interpreter found."
45     echo "This configure script requires a POSIX-compatible shell"
46     echo "such as bash or ksh."
47     echo "THIS IS NOT A BUG IN FFMPEG, DO NOT REPORT IT AS SUCH."
48     echo "Instead, install a working POSIX-compatible shell."
49     echo "Disabling this configure test will create a broken FFmpeg."
50     if test "$BASH_VERSION" = '2.04.0(1)-release'; then
51         echo "This bash version ($BASH_VERSION) is broken on your platform."
52         echo "Upgrade to a later version if available."
53     fi
54     exit 1
55 fi
56
57 test -d /usr/xpg4/bin && PATH=/usr/xpg4/bin:$PATH
58
59 show_help(){
60     cat <<EOF
61 Usage: configure [options]
62 Options: [defaults in brackets after descriptions]
63
64 Help options:
65   --help                   print this message
66   --quiet                  Suppress showing informative output
67   --list-decoders          show all available decoders
68   --list-encoders          show all available encoders
69   --list-hwaccels          show all available hardware accelerators
70   --list-demuxers          show all available demuxers
71   --list-muxers            show all available muxers
72   --list-parsers           show all available parsers
73   --list-protocols         show all available protocols
74   --list-bsfs              show all available bitstream filters
75   --list-indevs            show all available input devices
76   --list-outdevs           show all available output devices
77   --list-filters           show all available filters
78
79 Standard options:
80   --logfile=FILE           log tests and output to FILE [ffbuild/config.log]
81   --disable-logging        do not log configure debug information
82   --fatal-warnings         fail if any configure warning is generated
83   --prefix=PREFIX          install in PREFIX [$prefix_default]
84   --bindir=DIR             install binaries in DIR [PREFIX/bin]
85   --datadir=DIR            install data files in DIR [PREFIX/share/ffmpeg]
86   --docdir=DIR             install documentation in DIR [PREFIX/share/doc/ffmpeg]
87   --libdir=DIR             install libs in DIR [PREFIX/lib]
88   --shlibdir=DIR           install shared libs in DIR [LIBDIR]
89   --incdir=DIR             install includes in DIR [PREFIX/include]
90   --mandir=DIR             install man page in DIR [PREFIX/share/man]
91   --pkgconfigdir=DIR       install pkg-config files in DIR [LIBDIR/pkgconfig]
92   --enable-rpath           use rpath to allow installing libraries in paths
93                            not part of the dynamic linker search path
94                            use rpath when linking programs (USE WITH CARE)
95   --install-name-dir=DIR   Darwin directory name for installed targets
96
97 Licensing options:
98   --enable-gpl             allow use of GPL code, the resulting libs
99                            and binaries will be under GPL [no]
100   --enable-version3        upgrade (L)GPL to version 3 [no]
101   --enable-nonfree         allow use of nonfree code, the resulting libs
102                            and binaries will be unredistributable [no]
103
104 Configuration options:
105   --disable-static         do not build static libraries [no]
106   --enable-shared          build shared libraries [no]
107   --enable-small           optimize for size instead of speed
108   --disable-runtime-cpudetect disable detecting CPU capabilities at runtime (smaller binary)
109   --enable-gray            enable full grayscale support (slower color)
110   --disable-swscale-alpha  disable alpha channel support in swscale
111   --disable-all            disable building components, libraries and programs
112   --disable-autodetect     disable automatically detected external libraries [no]
113
114 Program options:
115   --disable-programs       do not build command line programs
116   --disable-ffmpeg         disable ffmpeg build
117   --disable-ffplay         disable ffplay build
118   --disable-ffprobe        disable ffprobe build
119   --disable-ffserver       disable ffserver build
120
121 Documentation options:
122   --disable-doc            do not build documentation
123   --disable-htmlpages      do not build HTML documentation pages
124   --disable-manpages       do not build man documentation pages
125   --disable-podpages       do not build POD documentation pages
126   --disable-txtpages       do not build text documentation pages
127
128 Component options:
129   --disable-avdevice       disable libavdevice build
130   --disable-avcodec        disable libavcodec build
131   --disable-avformat       disable libavformat build
132   --disable-swresample     disable libswresample build
133   --disable-swscale        disable libswscale build
134   --disable-postproc       disable libpostproc build
135   --disable-avfilter       disable libavfilter build
136   --enable-avresample      enable libavresample build [no]
137   --disable-pthreads       disable pthreads [autodetect]
138   --disable-w32threads     disable Win32 threads [autodetect]
139   --disable-os2threads     disable OS/2 threads [autodetect]
140   --disable-network        disable network support [no]
141   --disable-dct            disable DCT code
142   --disable-dwt            disable DWT code
143   --disable-error-resilience disable error resilience code
144   --disable-lsp            disable LSP code
145   --disable-lzo            disable LZO decoder code
146   --disable-mdct           disable MDCT code
147   --disable-rdft           disable RDFT code
148   --disable-fft            disable FFT code
149   --disable-faan           disable floating point AAN (I)DCT code
150   --disable-pixelutils     disable pixel utils in libavutil
151
152 Individual component options:
153   --disable-everything     disable all components listed below
154   --disable-encoder=NAME   disable encoder NAME
155   --enable-encoder=NAME    enable encoder NAME
156   --disable-encoders       disable all encoders
157   --disable-decoder=NAME   disable decoder NAME
158   --enable-decoder=NAME    enable decoder NAME
159   --disable-decoders       disable all decoders
160   --disable-hwaccel=NAME   disable hwaccel NAME
161   --enable-hwaccel=NAME    enable hwaccel NAME
162   --disable-hwaccels       disable all hwaccels
163   --disable-muxer=NAME     disable muxer NAME
164   --enable-muxer=NAME      enable muxer NAME
165   --disable-muxers         disable all muxers
166   --disable-demuxer=NAME   disable demuxer NAME
167   --enable-demuxer=NAME    enable demuxer NAME
168   --disable-demuxers       disable all demuxers
169   --enable-parser=NAME     enable parser NAME
170   --disable-parser=NAME    disable parser NAME
171   --disable-parsers        disable all parsers
172   --enable-bsf=NAME        enable bitstream filter NAME
173   --disable-bsf=NAME       disable bitstream filter NAME
174   --disable-bsfs           disable all bitstream filters
175   --enable-protocol=NAME   enable protocol NAME
176   --disable-protocol=NAME  disable protocol NAME
177   --disable-protocols      disable all protocols
178   --enable-indev=NAME      enable input device NAME
179   --disable-indev=NAME     disable input device NAME
180   --disable-indevs         disable input devices
181   --enable-outdev=NAME     enable output device NAME
182   --disable-outdev=NAME    disable output device NAME
183   --disable-outdevs        disable output devices
184   --disable-devices        disable all devices
185   --enable-filter=NAME     enable filter NAME
186   --disable-filter=NAME    disable filter NAME
187   --disable-filters        disable all filters
188   --disable-v4l2_m2m       disable V4L2 mem2mem code [autodetect]
189
190 External library support:
191
192   Using any of the following switches will allow FFmpeg to link to the
193   corresponding external library. All the components depending on that library
194   will become enabled, if all their other dependencies are met and they are not
195   explicitly disabled. E.g. --enable-libwavpack will enable linking to
196   libwavpack and allow the libwavpack encoder to be built, unless it is
197   specifically disabled with --disable-encoder=libwavpack.
198
199   Note that only the system libraries are auto-detected. All the other external
200   libraries must be explicitly enabled.
201
202   Also note that the following help text describes the purpose of the libraries
203   themselves, not all their features will necessarily be usable by FFmpeg.
204
205   --disable-alsa           disable ALSA support [autodetect]
206   --disable-appkit         disable Apple AppKit framework [autodetect]
207   --disable-avfoundation   disable Apple AVFoundation framework [autodetect]
208   --enable-avisynth        enable reading of AviSynth script files [no]
209   --disable-bzlib          disable bzlib [autodetect]
210   --disable-coreimage      disable Apple CoreImage framework [autodetect]
211   --enable-chromaprint     enable audio fingerprinting with chromaprint [no]
212   --enable-frei0r          enable frei0r video filtering [no]
213   --enable-gcrypt          enable gcrypt, needed for rtmp(t)e support
214                            if openssl, librtmp or gmp is not used [no]
215   --enable-gmp             enable gmp, needed for rtmp(t)e support
216                            if openssl or librtmp is not used [no]
217   --enable-gnutls          enable gnutls, needed for https support
218                            if openssl is not used [no]
219   --disable-iconv          disable iconv [autodetect]
220   --enable-jni             enable JNI support [no]
221   --enable-ladspa          enable LADSPA audio filtering [no]
222   --enable-libass          enable libass subtitles rendering,
223                            needed for subtitles and ass filter [no]
224   --enable-libbluray       enable BluRay reading using libbluray [no]
225   --enable-libbs2b         enable bs2b DSP library [no]
226   --enable-libcaca         enable textual display using libcaca [no]
227   --enable-libcelt         enable CELT decoding via libcelt [no]
228   --enable-libcdio         enable audio CD grabbing with libcdio [no]
229   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
230                            and libraw1394 [no]
231   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
232   --enable-libflite        enable flite (voice synthesis) support via libflite [no]
233   --enable-libfontconfig   enable libfontconfig, useful for drawtext filter [no]
234   --enable-libfreetype     enable libfreetype, needed for drawtext filter [no]
235   --enable-libfribidi      enable libfribidi, improves drawtext filter [no]
236   --enable-libgme          enable Game Music Emu via libgme [no]
237   --enable-libgsm          enable GSM de/encoding via libgsm [no]
238   --enable-libiec61883     enable iec61883 via libiec61883 [no]
239   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
240   --enable-libjack         enable JACK audio sound server [no]
241   --enable-libkvazaar      enable HEVC encoding via libkvazaar [no]
242   --enable-libmodplug      enable ModPlug via libmodplug [no]
243   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
244   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
245   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
246   --enable-libopencv       enable video filtering via libopencv [no]
247   --enable-libopenh264     enable H.264 encoding via OpenH264 [no]
248   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
249   --enable-libopenmpt      enable decoding tracked files via libopenmpt [no]
250   --enable-libopus         enable Opus de/encoding via libopus [no]
251   --enable-libpulse        enable Pulseaudio input via libpulse [no]
252   --enable-librsvg         enable SVG rasterization via librsvg [no]
253   --enable-librubberband   enable rubberband needed for rubberband filter [no]
254   --enable-librtmp         enable RTMP[E] support via librtmp [no]
255   --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
256   --enable-libsmbclient    enable Samba protocol via libsmbclient [no]
257   --enable-libsnappy       enable Snappy compression, needed for hap encoding [no]
258   --enable-libsoxr         enable Include libsoxr resampling [no]
259   --enable-libspeex        enable Speex de/encoding via libspeex [no]
260   --enable-libssh          enable SFTP protocol via libssh [no]
261   --enable-libtesseract    enable Tesseract, needed for ocr filter [no]
262   --enable-libtheora       enable Theora encoding via libtheora [no]
263   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
264   --enable-libv4l2         enable libv4l2/v4l-utils [no]
265   --enable-libvidstab      enable video stabilization using vid.stab [no]
266   --enable-libvmaf         enable vmaf filter via libvmaf [no]
267   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
268   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
269                            native implementation exists [no]
270   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
271   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
272   --enable-libwebp         enable WebP encoding via libwebp [no]
273   --enable-libx264         enable H.264 encoding via x264 [no]
274   --enable-libx265         enable HEVC encoding via x265 [no]
275   --enable-libxavs         enable AVS encoding via xavs [no]
276   --enable-libxcb          enable X11 grabbing using XCB [autodetect]
277   --enable-libxcb-shm      enable X11 grabbing shm communication [autodetect]
278   --enable-libxcb-xfixes   enable X11 grabbing mouse rendering [autodetect]
279   --enable-libxcb-shape    enable X11 grabbing shape rendering [autodetect]
280   --enable-libxvid         enable Xvid encoding via xvidcore,
281                            native MPEG-4/Xvid encoder exists [no]
282   --enable-libxml2         enable XML parsing using the C library libxml2 [no]
283   --enable-libzimg         enable z.lib, needed for zscale filter [no]
284   --enable-libzmq          enable message passing via libzmq [no]
285   --enable-libzvbi         enable teletext support via libzvbi [no]
286   --disable-lzma           disable lzma [autodetect]
287   --enable-decklink        enable Blackmagic DeckLink I/O support [no]
288   --enable-libndi_newtek   enable Newteck NDI I/O support [no]
289   --enable-mediacodec      enable Android MediaCodec support [no]
290   --enable-libmysofa       enable libmysofa, needed for sofalizer filter [no]
291   --enable-openal          enable OpenAL 1.1 capture support [no]
292   --enable-opencl          enable OpenCL code
293   --enable-opengl          enable OpenGL rendering [no]
294   --enable-openssl         enable openssl, needed for https support
295                            if gnutls is not used [no]
296   --disable-sndio          disable sndio support [autodetect]
297   --disable-schannel       disable SChannel SSP, needed for TLS support on
298                            Windows if openssl and gnutls are not used [autodetect]
299   --disable-sdl2           disable sdl2 [autodetect]
300   --disable-securetransport disable Secure Transport, needed for TLS support
301                            on OSX if openssl and gnutls are not used [autodetect]
302   --disable-xlib           disable xlib [autodetect]
303   --disable-zlib           disable zlib [autodetect]
304
305   The following libraries provide various hardware acceleration features:
306   --disable-audiotoolbox   disable Apple AudioToolbox code [autodetect]
307   --disable-cuda           disable dynamically linked Nvidia CUDA code [autodetect]
308   --enable-cuda-sdk        enable CUDA features that require the CUDA SDK [no]
309   --disable-cuvid          disable Nvidia CUVID support [autodetect]
310   --disable-d3d11va        disable Microsoft Direct3D 11 video acceleration code [autodetect]
311   --disable-dxva2          disable Microsoft DirectX 9 video acceleration code [autodetect]
312   --enable-libdrm          enable DRM code (Linux) [no]
313   --enable-libmfx          enable Intel MediaSDK (AKA Quick Sync Video) code via libmfx [no]
314   --enable-libnpp          enable Nvidia Performance Primitives-based code [no]
315   --enable-mmal            enable Broadcom Multi-Media Abstraction Layer (Raspberry Pi) via MMAL [no]
316   --disable-nvdec          disable Nvidia video decoding acceleration (via hwaccel) [autodetect]
317   --disable-nvenc          disable Nvidia video encoding code [autodetect]
318   --enable-omx             enable OpenMAX IL code [no]
319   --enable-omx-rpi         enable OpenMAX IL code for Raspberry Pi [no]
320   --enable-rkmpp           enable Rockchip Media Process Platform code [no]
321   --disable-vaapi          disable Video Acceleration API (mainly Unix/Intel) code [autodetect]
322   --disable-vdpau          disable Nvidia Video Decode and Presentation API for Unix code [autodetect]
323   --disable-videotoolbox   disable VideoToolbox code [autodetect]
324
325 Toolchain options:
326   --arch=ARCH              select architecture [$arch]
327   --cpu=CPU                select the minimum required CPU (affects
328                            instruction selection, may crash on older CPUs)
329   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
330   --progs-suffix=SUFFIX    program name suffix []
331   --enable-cross-compile   assume a cross-compiler is used
332   --sysroot=PATH           root of cross-build tree
333   --sysinclude=PATH        location of cross-build system headers
334   --target-os=OS           compiler targets OS [$target_os]
335   --target-exec=CMD        command to run executables on target
336   --target-path=DIR        path to view of build directory on target
337   --target-samples=DIR     path to samples directory on target
338   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
339   --toolchain=NAME         set tool defaults according to NAME
340   --nm=NM                  use nm tool NM [$nm_default]
341   --ar=AR                  use archive tool AR [$ar_default]
342   --as=AS                  use assembler AS [$as_default]
343   --ln_s=LN_S              use symbolic link tool LN_S [$ln_s_default]
344   --strip=STRIP            use strip tool STRIP [$strip_default]
345   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
346   --x86asmexe=EXE          use nasm-compatible assembler EXE [$x86asmexe_default]
347   --cc=CC                  use C compiler CC [$cc_default]
348   --cxx=CXX                use C compiler CXX [$cxx_default]
349   --objcc=OCC              use ObjC compiler OCC [$cc_default]
350   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
351   --nvcc=NVCC              use Nvidia CUDA compiler NVCC [$nvcc_default]
352   --ld=LD                  use linker LD [$ld_default]
353   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
354   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
355   --ranlib=RANLIB          use ranlib RANLIB [$ranlib_default]
356   --doxygen=DOXYGEN        use DOXYGEN to generate API doc [$doxygen_default]
357   --host-cc=HOSTCC         use host C compiler HOSTCC
358   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
359   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
360   --host-ld=HOSTLD         use host linker HOSTLD
361   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
362   --host-libs=HLIBS        use libs HLIBS when linking for host
363   --host-os=OS             compiler host OS [$target_os]
364   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
365   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
366   --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
367   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
368   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
369   --extra-ldsoflags=ELDFLAGS add ELDFLAGS to LDSOFLAGS [$LDSOFLAGS]
370   --extra-libs=ELIBS       add ELIBS [$ELIBS]
371   --extra-version=STRING   version string suffix []
372   --optflags=OPTFLAGS      override optimization-related compiler flags
373   --nvccflags=NVCCFLAGS    override nvcc flags [$nvccflags_default]
374   --build-suffix=SUFFIX    library name suffix []
375   --enable-pic             build position-independent code
376   --enable-thumb           compile for Thumb instruction set
377   --enable-lto             use link-time optimization
378   --env="ENV=override"     override the environment variables
379
380 Advanced options (experts only):
381   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
382   --custom-allocator=NAME  use a supported custom allocator
383   --disable-symver         disable symbol versioning
384   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
385   --disable-safe-bitstream-reader
386                            disable buffer boundary checking in bitreaders
387                            (faster, but may crash)
388   --sws-max-filter-size=N  the max filter size swscale uses [$sws_max_filter_size_default]
389
390 Optimization options (experts only):
391   --disable-asm            disable all assembly optimizations
392   --disable-altivec        disable AltiVec optimizations
393   --disable-vsx            disable VSX optimizations
394   --disable-power8         disable POWER8 optimizations
395   --disable-amd3dnow       disable 3DNow! optimizations
396   --disable-amd3dnowext    disable 3DNow! extended optimizations
397   --disable-mmx            disable MMX optimizations
398   --disable-mmxext         disable MMXEXT optimizations
399   --disable-sse            disable SSE optimizations
400   --disable-sse2           disable SSE2 optimizations
401   --disable-sse3           disable SSE3 optimizations
402   --disable-ssse3          disable SSSE3 optimizations
403   --disable-sse4           disable SSE4 optimizations
404   --disable-sse42          disable SSE4.2 optimizations
405   --disable-avx            disable AVX optimizations
406   --disable-xop            disable XOP optimizations
407   --disable-fma3           disable FMA3 optimizations
408   --disable-fma4           disable FMA4 optimizations
409   --disable-avx2           disable AVX2 optimizations
410   --disable-aesni          disable AESNI optimizations
411   --disable-armv5te        disable armv5te optimizations
412   --disable-armv6          disable armv6 optimizations
413   --disable-armv6t2        disable armv6t2 optimizations
414   --disable-vfp            disable VFP optimizations
415   --disable-neon           disable NEON optimizations
416   --disable-inline-asm     disable use of inline assembly
417   --disable-x86asm         disable use of standalone x86 assembly
418   --disable-mipsdsp        disable MIPS DSP ASE R1 optimizations
419   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
420   --disable-msa            disable MSA optimizations
421   --disable-mipsfpu        disable floating point MIPS optimizations
422   --disable-mmi            disable Loongson SIMD optimizations
423   --disable-fast-unaligned consider unaligned accesses slow
424
425 Developer options (useful when working on FFmpeg itself):
426   --disable-debug          disable debugging symbols
427   --enable-debug=LEVEL     set the debug level [$debuglevel]
428   --disable-optimizations  disable compiler optimizations
429   --enable-extra-warnings  enable more compiler warnings
430   --disable-stripping      disable stripping of executables and shared libraries
431   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
432                            2 causes a slowdown at runtime.
433   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
434   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
435                            leaks and errors, using the specified valgrind binary.
436                            Cannot be combined with --target-exec
437   --enable-ftrapv          Trap arithmetic overflows
438   --samples=PATH           location of test samples for FATE, if not set use
439                            \$FATE_SAMPLES at make invocation time.
440   --enable-neon-clobber-test check NEON registers for clobbering (should be
441                            used only for debugging purposes)
442   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
443                            should be used only for debugging purposes)
444   --enable-random          randomly enable/disable components
445   --disable-random
446   --enable-random=LIST     randomly enable/disable specific components or
447   --disable-random=LIST    component groups. LIST is a comma-separated list
448                            of NAME[:PROB] entries where NAME is a component
449                            (group) and PROB the probability associated with
450                            NAME (default 0.5).
451   --random-seed=VALUE      seed value for --enable/disable-random
452   --disable-valgrind-backtrace do not print a backtrace under Valgrind
453                            (only applies to --disable-optimizations builds)
454   --enable-osfuzz          Enable building fuzzer tool
455   --libfuzzer=PATH         path to libfuzzer
456   --ignore-tests=TESTS     comma-separated list (without "fate-" prefix
457                            in the name) of tests whose result is ignored
458   --enable-linux-perf      enable Linux Performance Monitor API
459
460 NOTE: Object files are built at the place where configure is launched.
461 EOF
462   exit 0
463 }
464
465 quotes='""'
466 if test -t 1 && which tput >/dev/null 2>&1; then
467     ncolors=$(tput colors)
468     if test -n "$ncolors" && test $ncolors -ge 8; then
469         bold_color=$(tput bold)
470         warn_color=$(tput setaf 3)
471         error_color=$(tput setaf 1)
472         reset_color=$(tput sgr0)
473     fi
474     # 72 used instead of 80 since that's the default of pr
475     ncols=$(tput cols)
476 fi
477 : ${ncols:=72}
478
479 log(){
480     echo "$@" >> $logfile
481 }
482
483 log_file(){
484     log BEGIN $1
485     pr -n -t $1 >> $logfile
486     log END $1
487 }
488
489 warn(){
490     log "WARNING: $*"
491     WARNINGS="${WARNINGS}WARNING: $*\n"
492 }
493
494 die(){
495     log "$@"
496     echo "$error_color$bold_color$@$reset_color"
497     cat <<EOF
498
499 If you think configure made a mistake, make sure you are using the latest
500 version from Git.  If the latest version fails, report the problem to the
501 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
502 EOF
503     if disabled logging; then
504         cat <<EOF
505 Rerun configure with logging enabled (do not use --disable-logging), and
506 include the log this produces with your report.
507 EOF
508     else
509         cat <<EOF
510 Include the log file "$logfile" produced by configure as this will help
511 solve the problem.
512 EOF
513     fi
514     exit 1
515 }
516
517 # Avoid locale weirdness, besides we really just want to translate ASCII.
518 toupper(){
519     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
520 }
521
522 tolower(){
523     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
524 }
525
526 c_escape(){
527     echo "$*" | sed 's/["\\]/\\\0/g'
528 }
529
530 sh_quote(){
531     v=$(echo "$1" | sed "s/'/'\\\\''/g")
532     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
533     echo "$v"
534 }
535
536 cleanws(){
537     echo "$@" | sed 's/^ *//;s/[[:space:]][[:space:]]*/ /g;s/ *$//'
538 }
539
540 filter(){
541     pat=$1
542     shift
543     for v; do
544         eval "case '$v' in $pat) printf '%s ' '$v' ;; esac"
545     done
546 }
547
548 filter_out(){
549     pat=$1
550     shift
551     for v; do
552         eval "case '$v' in $pat) ;; *) printf '%s ' '$v' ;; esac"
553     done
554 }
555
556 map(){
557     m=$1
558     shift
559     for v; do eval $m; done
560 }
561
562 add_suffix(){
563     suffix=$1
564     shift
565     for v; do echo ${v}${suffix}; done
566 }
567
568 set_all(){
569     value=$1
570     shift
571     for var in $*; do
572         eval $var=$value
573     done
574 }
575
576 set_weak(){
577     value=$1
578     shift
579     for var; do
580         eval : \${$var:=$value}
581     done
582 }
583
584 sanitize_var_name(){
585     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
586 }
587
588 set_sanitized(){
589     var=$1
590     shift
591     eval $(sanitize_var_name "$var")='$*'
592 }
593
594 get_sanitized(){
595     eval echo \$$(sanitize_var_name "$1")
596 }
597
598 pushvar(){
599     for pvar in $*; do
600         eval level=\${${pvar}_level:=0}
601         eval ${pvar}_${level}="\$$pvar"
602         eval ${pvar}_level=$(($level+1))
603     done
604 }
605
606 popvar(){
607     for pvar in $*; do
608         eval level=\${${pvar}_level:-0}
609         test $level = 0 && continue
610         eval level=$(($level-1))
611         eval $pvar="\${${pvar}_${level}}"
612         eval ${pvar}_level=$level
613         eval unset ${pvar}_${level}
614     done
615 }
616
617 request(){
618     for var in $*; do
619         eval ${var}_requested=yes
620         eval $var=
621     done
622 }
623
624 enable(){
625     set_all yes $*
626 }
627
628 disable(){
629     set_all no $*
630 }
631
632 enable_weak(){
633     set_weak yes $*
634 }
635
636 disable_weak(){
637     set_weak no $*
638 }
639
640 enable_sanitized(){
641     for var; do
642         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
643     done
644 }
645
646 disable_sanitized(){
647     for var; do
648         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
649     done
650 }
651
652 do_enable_deep(){
653     for var; do
654         enabled $var && continue
655         eval sel="\$${var}_select"
656         eval sgs="\$${var}_suggest"
657         pushvar var sgs
658         enable_deep $sel
659         popvar sgs
660         enable_deep_weak $sgs
661         popvar var
662     done
663 }
664
665 enable_deep(){
666     do_enable_deep $*
667     enable $*
668 }
669
670 enable_deep_weak(){
671     for var; do
672         disabled $var && continue
673         pushvar var
674         do_enable_deep $var
675         popvar var
676         enable_weak $var
677     done
678 }
679
680 requested(){
681     test "${1#!}" = "$1" && op='=' || op=!=
682     eval test "x\$${1#!}_requested" $op "xyes"
683 }
684
685 enabled(){
686     test "${1#!}" = "$1" && op='=' || op=!=
687     eval test "x\$${1#!}" $op "xyes"
688 }
689
690 disabled(){
691     test "${1#!}" = "$1" && op='=' || op=!=
692     eval test "x\$${1#!}" $op "xno"
693 }
694
695 enabled_all(){
696     for opt; do
697         enabled $opt || return 1
698     done
699 }
700
701 disabled_all(){
702     for opt; do
703         disabled $opt || return 1
704     done
705 }
706
707 enabled_any(){
708     for opt; do
709         enabled $opt && return 0
710     done
711 }
712
713 disabled_any(){
714     for opt; do
715         disabled $opt && return 0
716     done
717     return 1
718 }
719
720 set_default(){
721     for opt; do
722         eval : \${$opt:=\$${opt}_default}
723     done
724 }
725
726 is_in(){
727     value=$1
728     shift
729     for var in $*; do
730         [ $var = $value ] && return 0
731     done
732     return 1
733 }
734
735 check_deps(){
736     for cfg; do
737         enabled ${cfg}_checking && die "Circular dependency for $cfg."
738         disabled ${cfg}_checking && continue
739         enable ${cfg}_checking
740
741         eval dep_all="\$${cfg}_deps"
742         eval dep_any="\$${cfg}_deps_any"
743         eval dep_con="\$${cfg}_conflict"
744         eval dep_sel="\$${cfg}_select"
745         eval dep_sgs="\$${cfg}_suggest"
746         eval dep_ifa="\$${cfg}_if"
747         eval dep_ifn="\$${cfg}_if_any"
748
749         pushvar cfg dep_all dep_any dep_con dep_sel dep_sgs dep_ifa dep_ifn
750         check_deps $dep_all $dep_any $dep_con $dep_sel $dep_sgs $dep_ifa $dep_ifn
751         popvar cfg dep_all dep_any dep_con dep_sel dep_sgs dep_ifa dep_ifn
752
753         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
754         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
755         enabled_all  $dep_all || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but not all dependencies are satisfied: $dep_all"; }
756         enabled_any  $dep_any || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but not any dependency is satisfied: $dep_any"; }
757         disabled_all $dep_con || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but some conflicting dependencies are unsatisfied: $dep_con"; }
758         disabled_any $dep_sel && { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but some selected dependency is unsatisfied: $dep_sel"; }
759
760         enabled $cfg && enable_deep_weak $dep_sel $dep_sgs
761
762         for dep in $dep_all $dep_any $dep_sel $dep_sgs; do
763             # filter out library deps, these do not belong in extralibs
764             is_in $dep $LIBRARY_LIST && continue
765             enabled $dep && eval append ${cfg}_extralibs ${dep}_extralibs
766         done
767
768         disable ${cfg}_checking
769     done
770 }
771
772 print_config(){
773     pfx=$1
774     files=$2
775     shift 2
776     map 'eval echo "$v \${$v:-no}"' "$@" |
777     awk "BEGIN { split(\"$files\", files) }
778         {
779             c = \"$pfx\" toupper(\$1);
780             v = \$2;
781             sub(/yes/, 1, v);
782             sub(/no/,  0, v);
783             for (f in files) {
784                 file = files[f];
785                 if (file ~ /\\.h\$/) {
786                     printf(\"#define %s %d\\n\", c, v) >>file;
787                 } else if (file ~ /\\.asm\$/) {
788                     printf(\"%%define %s %d\\n\", c, v) >>file;
789                 } else if (file ~ /\\.mak\$/) {
790                     n = -v ? \"\" : \"!\";
791                     printf(\"%s%s=yes\\n\", n, c) >>file;
792                 } else if (file ~ /\\.texi\$/) {
793                     pre = -v ? \"\" : \"@c \";
794                     yesno = \$2;
795                     c2 = tolower(c);
796                     gsub(/_/, \"-\", c2);
797                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
798                 }
799             }
800         }"
801 }
802
803 print_enabled(){
804     suf=$1
805     shift
806     for v; do
807         enabled $v && printf "%s\n" ${v%$suf}
808     done
809 }
810
811 append(){
812     var=$1
813     shift
814     eval "$var=\"\$$var $*\""
815 }
816
817 prepend(){
818     var=$1
819     shift
820     eval "$var=\"$* \$$var\""
821 }
822
823 unique(){
824     var=$1
825     uniq_list=""
826     for tok in $(eval echo \$$var); do
827         uniq_list="$(filter_out $tok $uniq_list) $tok"
828     done
829     eval "$var=\"${uniq_list}\""
830 }
831
832 resolve(){
833     var=$1
834     tmpvar=
835     for entry in $(eval echo \$$var); do
836         tmpvar="$tmpvar $(eval echo \$${entry})"
837     done
838     eval "$var=\"${tmpvar}\""
839 }
840
841 add_cppflags(){
842     append CPPFLAGS "$@"
843 }
844
845 add_cflags(){
846     append CFLAGS $($cflags_filter "$@")
847 }
848
849 add_cflags_headers(){
850     append CFLAGS_HEADERS $($cflags_filter "$@")
851 }
852
853 add_cxxflags(){
854     append CXXFLAGS $($cflags_filter "$@")
855 }
856
857 add_asflags(){
858     append ASFLAGS $($asflags_filter "$@")
859 }
860
861 add_objcflags(){
862     append OBJCFLAGS $($objcflags_filter "$@")
863 }
864
865 add_ldflags(){
866     append LDFLAGS $($ldflags_filter "$@")
867 }
868
869 add_ldexeflags(){
870     append LDEXEFLAGS $($ldflags_filter "$@")
871 }
872
873 add_ldsoflags(){
874     append LDSOFLAGS $($ldflags_filter "$@")
875 }
876
877 add_stripflags(){
878     append ASMSTRIPFLAGS "$@"
879 }
880
881 add_extralibs(){
882     prepend extralibs $($ldflags_filter "$@")
883 }
884
885 add_host_cppflags(){
886     append host_cppflags "$@"
887 }
888
889 add_host_cflags(){
890     append host_cflags $($host_cflags_filter "$@")
891 }
892
893 add_host_ldflags(){
894     append host_ldflags $($host_ldflags_filter "$@")
895 }
896
897 add_compat(){
898     append compat_objs $1
899     shift
900     map 'add_cppflags -D$v' "$@"
901 }
902
903 check_cmd(){
904     log "$@"
905     "$@" >> $logfile 2>&1
906 }
907
908 check_stat(){
909     log check_stat "$@"
910     stat "$1" >> $logfile 2>&1
911 }
912
913 cc_o(){
914     eval printf '%s\\n' $CC_O
915 }
916
917 cc_e(){
918     eval printf '%s\\n' $CC_E
919 }
920
921 check_cc(){
922     log check_cc "$@"
923     cat > $TMPC
924     log_file $TMPC
925     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
926 }
927
928 check_cxx(){
929     log check_cxx "$@"
930     cat > $TMPCPP
931     log_file $TMPCPP
932     check_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
933 }
934
935 check_objcc(){
936     log check_objcc "$@"
937     cat > $TMPM
938     log_file $TMPM
939     check_cmd $objcc -Werror=missing-prototypes $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPM
940 }
941
942 check_cpp(){
943     log check_cpp "$@"
944     cat > $TMPC
945     log_file $TMPC
946     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
947 }
948
949 as_o(){
950     eval printf '%s\\n' $AS_O
951 }
952
953 check_as(){
954     log check_as "$@"
955     cat > $TMPS
956     log_file $TMPS
957     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
958 }
959
960 check_inline_asm(){
961     log check_inline_asm "$@"
962     name="$1"
963     code="$2"
964     shift 2
965     disable $name
966     check_cc "$@" <<EOF && enable $name
967 void foo(void){ __asm__ volatile($code); }
968 EOF
969 }
970
971 check_inline_asm_flags(){
972     log check_inline_asm_flags "$@"
973     name="$1"
974     code="$2"
975     flags=''
976     shift 2
977     while [ "$1" != "" ]; do
978       append flags $1
979       shift
980     done;
981     disable $name
982     cat > $TMPC <<EOF
983 void foo(void){ __asm__ volatile($code); }
984 EOF
985     log_file $TMPC
986     check_cmd $cc $CPPFLAGS $CFLAGS $flags "$@" $CC_C $(cc_o $TMPO) $TMPC &&
987     enable $name && add_cflags $flags && add_asflags $flags && add_ldflags $flags
988 }
989
990 check_insn(){
991     log check_insn "$@"
992     check_inline_asm ${1}_inline "\"$2\""
993     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
994 }
995
996 check_x86asm(){
997     log check_x86asm "$@"
998     echo "$1" > $TMPS
999     log_file $TMPS
1000     shift 1
1001     check_cmd $x86asmexe $X86ASMFLAGS -Werror "$@" -o $TMPO $TMPS
1002 }
1003
1004 ld_o(){
1005     eval printf '%s\\n' $LD_O
1006 }
1007
1008 check_ld(){
1009     log check_ld "$@"
1010     type=$1
1011     shift 1
1012     flags=$(filter_out '-l*|*.so' $@)
1013     libs=$(filter '-l*|*.so' $@)
1014     check_$type $($cflags_filter $flags) || return
1015     flags=$($ldflags_filter $flags)
1016     libs=$($ldflags_filter $libs)
1017     check_cmd $ld $LDFLAGS $LDEXEFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
1018 }
1019
1020 print_include(){
1021     hdr=$1
1022     test "${hdr%.h}" = "${hdr}" &&
1023         echo "#include $hdr"    ||
1024         echo "#include <$hdr>"
1025 }
1026
1027 check_code(){
1028     log check_code "$@"
1029     check=$1
1030     headers=$2
1031     code=$3
1032     shift 3
1033     {
1034         for hdr in $headers; do
1035             print_include $hdr
1036         done
1037         echo "int main(void) { $code; return 0; }"
1038     } | check_$check "$@"
1039 }
1040
1041 check_cppflags(){
1042     log check_cppflags "$@"
1043     check_cpp "$@" <<EOF && append CPPFLAGS "$@"
1044 #include <stdlib.h>
1045 EOF
1046 }
1047
1048 test_cflags(){
1049     log test_cflags "$@"
1050     set -- $($cflags_filter "$@")
1051     check_cc "$@" <<EOF
1052 int x;
1053 EOF
1054 }
1055
1056 check_cflags(){
1057     log check_cflags "$@"
1058     test_cflags "$@" && add_cflags "$@"
1059 }
1060
1061 check_cxxflags(){
1062     log check_cxxflags "$@"
1063     set -- $($cflags_filter "$@")
1064     check_cxx "$@" <<EOF && append CXXFLAGS "$@"
1065 int x;
1066 EOF
1067 }
1068
1069 test_objcflags(){
1070     log test_objcflags "$@"
1071     set -- $($objcflags_filter "$@")
1072     check_objcc "$@" <<EOF
1073 int x;
1074 EOF
1075 }
1076
1077 check_objcflags(){
1078     log check_objcflags "$@"
1079     test_objcflags "$@" && add_objcflags "$@"
1080 }
1081
1082 test_ldflags(){
1083     log test_ldflags "$@"
1084     check_ld "cc" "$@" <<EOF
1085 int main(void){ return 0; }
1086 EOF
1087 }
1088
1089 check_ldflags(){
1090     log check_ldflags "$@"
1091     test_ldflags "$@" && add_ldflags "$@"
1092 }
1093
1094 test_stripflags(){
1095     log test_stripflags "$@"
1096     # call check_cc to get a fresh TMPO
1097     check_cc <<EOF
1098 int main(void) { return 0; }
1099 EOF
1100     check_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
1101 }
1102
1103 check_stripflags(){
1104     log check_stripflags "$@"
1105     test_stripflags "$@" && add_stripflags "$@"
1106 }
1107
1108 check_header(){
1109     log check_header "$@"
1110     header=$1
1111     shift
1112     disable_sanitized $header
1113     check_cpp "$@" <<EOF && enable_sanitized $header
1114 #include <$header>
1115 int x;
1116 EOF
1117 }
1118
1119 check_header_objcc(){
1120     log check_header_objcc "$@"
1121     rm -f -- "$TMPO"
1122     header=$1
1123     shift
1124     disable_sanitized $header
1125     {
1126        echo "#include <$header>"
1127        echo "int main(void) { return 0; }"
1128     } | check_objcc && check_stat "$TMPO" && enable_sanitized $header
1129 }
1130
1131 check_apple_framework(){
1132     log check_apple_framework "$@"
1133     framework="$1"
1134     name="$(tolower $framework)"
1135     header="${framework}/${framework}.h"
1136     disable $name
1137     check_header_objcc $header &&
1138         enable $name && eval ${name}_extralibs='"-framework $framework"'
1139 }
1140
1141 check_func(){
1142     log check_func "$@"
1143     func=$1
1144     shift
1145     disable $func
1146     check_ld "cc" "$@" <<EOF && enable $func
1147 extern int $func();
1148 int main(void){ $func(); }
1149 EOF
1150 }
1151
1152 check_complexfunc(){
1153     log check_complexfunc "$@"
1154     func=$1
1155     narg=$2
1156     shift 2
1157     test $narg = 2 && args="f, g" || args="f * I"
1158     disable $func
1159     check_ld "cc" "$@" <<EOF && enable $func
1160 #include <complex.h>
1161 #include <math.h>
1162 float foo(complex float f, complex float g) { return $func($args); }
1163 int main(void){ return (int) foo; }
1164 EOF
1165 }
1166
1167 check_mathfunc(){
1168     log check_mathfunc "$@"
1169     func=$1
1170     narg=$2
1171     shift 2
1172     test $narg = 2 && args="f, g" || args="f"
1173     disable $func
1174     check_ld "cc" "$@" <<EOF && enable $func
1175 #include <math.h>
1176 float foo(float f, float g) { return $func($args); }
1177 int main(void){ return (int) foo; }
1178 EOF
1179 }
1180
1181 check_func_headers(){
1182     log check_func_headers "$@"
1183     headers=$1
1184     funcs=$2
1185     shift 2
1186     {
1187         for hdr in $headers; do
1188             print_include $hdr
1189         done
1190         echo "#include <stdint.h>"
1191         for func in $funcs; do
1192             echo "long check_$func(void) { return (long) $func; }"
1193         done
1194         echo "int main(void) { int ret = 0;"
1195         # LTO could optimize out the test functions without this
1196         for func in $funcs; do
1197             echo " ret |= ((intptr_t)check_$func) & 0xFFFF;"
1198         done
1199         echo "return ret; }"
1200     } | check_ld "cc" "$@" && enable $funcs && enable_sanitized $headers
1201 }
1202
1203 check_class_headers_cpp(){
1204     log check_class_headers_cpp "$@"
1205     headers=$1
1206     classes=$2
1207     shift 2
1208     {
1209         for hdr in $headers; do
1210             echo "#include <$hdr>"
1211         done
1212         echo "int main(void) { "
1213         i=1
1214         for class in $classes; do
1215             echo "$class obj$i;"
1216             i=$(expr $i + 1)
1217         done
1218         echo "return 0; }"
1219     } | check_ld "cxx" "$@" && enable $funcs && enable_sanitized $headers
1220 }
1221
1222 check_cpp_condition(){
1223     log check_cpp_condition "$@"
1224     header=$1
1225     condition=$2
1226     shift 2
1227     check_cpp "$@" <<EOF
1228 #include <$header>
1229 #if !($condition)
1230 #error "unsatisfied condition: $condition"
1231 #endif
1232 EOF
1233 }
1234
1235 test_cflags_cc(){
1236     log test_cflags_cc "$@"
1237     flags=$1
1238     header=$2
1239     condition=$3
1240     shift 3
1241     set -- $($cflags_filter "$flags")
1242     check_cc "$@" <<EOF
1243 #include <$header>
1244 #if !($condition)
1245 #error "unsatisfied condition: $condition"
1246 #endif
1247 EOF
1248 }
1249
1250 check_lib(){
1251     log check_lib "$@"
1252     name="$1"
1253     headers="$2"
1254     funcs="$3"
1255     shift 3
1256     disable $name
1257     check_func_headers "$headers" "$funcs" "$@" &&
1258         enable $name && eval ${name}_extralibs="\$@"
1259 }
1260
1261 check_lib_cpp(){
1262     log check_lib_cpp "$@"
1263     name="$1"
1264     headers="$2"
1265     classes="$3"
1266     shift 3
1267     disable $name
1268     check_class_headers_cpp "$headers" "$classes" "$@" &&
1269         enable $name && eval ${name}_extralibs="\$@"
1270 }
1271
1272 test_pkg_config(){
1273     log test_pkg_config "$@"
1274     name="$1"
1275     pkg_version="$2"
1276     pkg="${2%% *}"
1277     headers="$3"
1278     funcs="$4"
1279     shift 4
1280     disable $name
1281     check_cmd $pkg_config --exists --print-errors $pkg_version || return
1282     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1283     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1284     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1285         enable $name &&
1286         set_sanitized "${name}_cflags"    $pkg_cflags &&
1287         set_sanitized "${name}_extralibs" $pkg_libs
1288 }
1289
1290 check_pkg_config(){
1291     log check_pkg_config "$@"
1292     name="$1"
1293     test_pkg_config "$@" &&
1294         eval add_cflags \$${name}_cflags
1295 }
1296
1297 check_exec(){
1298     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1299 }
1300
1301 check_exec_crash(){
1302     log check_exec_crash "$@"
1303     code=$(cat)
1304
1305     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1306     # are safe but may not be available everywhere.  Thus we use
1307     # raise(SIGTERM) instead.  The check is run in a subshell so we
1308     # can redirect the "Terminated" message from the shell.  SIGBUS
1309     # is not defined by standard C so it is used conditionally.
1310
1311     (check_exec "$@") >> $logfile 2>&1 <<EOF
1312 #include <signal.h>
1313 static void sighandler(int sig){
1314     raise(SIGTERM);
1315 }
1316 int foo(void){
1317     $code
1318 }
1319 int (*func_ptr)(void) = foo;
1320 int main(void){
1321     signal(SIGILL, sighandler);
1322     signal(SIGFPE, sighandler);
1323     signal(SIGSEGV, sighandler);
1324 #ifdef SIGBUS
1325     signal(SIGBUS, sighandler);
1326 #endif
1327     return func_ptr();
1328 }
1329 EOF
1330 }
1331
1332 check_type(){
1333     log check_type "$@"
1334     headers=$1
1335     type=$2
1336     shift 2
1337     disable_sanitized "$type"
1338     check_code cc "$headers" "$type v" "$@" && enable_sanitized "$type"
1339 }
1340
1341 check_struct(){
1342     log check_struct "$@"
1343     headers=$1
1344     struct=$2
1345     member=$3
1346     shift 3
1347     disable_sanitized "${struct}_${member}"
1348     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1349         enable_sanitized "${struct}_${member}"
1350 }
1351
1352 check_builtin(){
1353     log check_builtin "$@"
1354     name=$1
1355     headers=$2
1356     builtin=$3
1357     shift 3
1358     disable "$name"
1359     check_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1360 }
1361
1362 check_compile_assert(){
1363     log check_compile_assert "$@"
1364     name=$1
1365     headers=$2
1366     condition=$3
1367     shift 3
1368     disable "$name"
1369     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1370 }
1371
1372 require(){
1373     log require "$@"
1374     name_version="$1"
1375     name="${1%% *}"
1376     headers="$2"
1377     func="$3"
1378     shift 3
1379     check_lib $name "$headers" $func "$@" || die "ERROR: $name_version not found"
1380 }
1381
1382 require_cpp(){
1383     name="$1"
1384     headers="$2"
1385     classes="$3"
1386     shift 3
1387     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1388 }
1389
1390 require_header(){
1391     log require "$@"
1392     header="$1"
1393     shift
1394     check_header "$header" "$@" || die "ERROR: $header header not found"
1395 }
1396
1397 require_cpp_condition(){
1398     log require "$@"
1399     header="$1"
1400     condition="$2"
1401     shift 2
1402     check_cpp_condition "$header" "$condition" "$@" || die "ERROR: $condition not satisfied"
1403 }
1404
1405 require_pkg_config(){
1406     log require_pkg_config "$@"
1407     pkg_version="$2"
1408     check_pkg_config "$@" || die "ERROR: $pkg_version not found using pkg-config$pkg_config_fail_message"
1409 }
1410
1411 hostcc_e(){
1412     eval printf '%s\\n' $HOSTCC_E
1413 }
1414
1415 hostcc_o(){
1416     eval printf '%s\\n' $HOSTCC_O
1417 }
1418
1419 check_host_cc(){
1420     log check_host_cc "$@"
1421     cat > $TMPC
1422     log_file $TMPC
1423     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1424 }
1425
1426 check_host_cpp(){
1427     log check_host_cpp "$@"
1428     cat > $TMPC
1429     log_file $TMPC
1430     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1431 }
1432
1433 check_host_cppflags(){
1434     log check_host_cppflags "$@"
1435     check_host_cpp "$@" <<EOF && append host_cppflags "$@"
1436 #include <stdlib.h>
1437 EOF
1438 }
1439
1440 check_host_cflags(){
1441     log check_host_cflags "$@"
1442     set -- $($host_cflags_filter "$@")
1443     check_host_cc "$@" <<EOF && append host_cflags "$@"
1444 int x;
1445 EOF
1446 }
1447
1448 check_host_cpp_condition(){
1449     log check_host_cpp_condition "$@"
1450     header=$1
1451     condition=$2
1452     shift 2
1453     check_host_cpp "$@" <<EOF
1454 #include <$header>
1455 #if !($condition)
1456 #error "unsatisfied condition: $condition"
1457 #endif
1458 EOF
1459 }
1460
1461 cp_if_changed(){
1462     cmp -s "$1" "$2" && { test "$quiet" != "yes" && echo "$2 is unchanged"; } && return
1463     mkdir -p "$(dirname $2)"
1464     cp -f "$1" "$2"
1465 }
1466
1467 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1468 # system-dependent things.
1469
1470 AVCODEC_COMPONENTS="
1471     bsfs
1472     decoders
1473     encoders
1474     hwaccels
1475     parsers
1476 "
1477
1478 AVDEVICE_COMPONENTS="
1479     indevs
1480     outdevs
1481 "
1482
1483 AVFILTER_COMPONENTS="
1484     filters
1485 "
1486
1487 AVFORMAT_COMPONENTS="
1488     demuxers
1489     muxers
1490     protocols
1491 "
1492
1493 AVRESAMPLE_COMPONENTS=""
1494
1495 AVUTIL_COMPONENTS=""
1496
1497 COMPONENT_LIST="
1498     $AVCODEC_COMPONENTS
1499     $AVDEVICE_COMPONENTS
1500     $AVFILTER_COMPONENTS
1501     $AVFORMAT_COMPONENTS
1502     $AVRESAMPLE_COMPONENTS
1503     $AVUTIL_COMPONENTS
1504 "
1505
1506 EXAMPLE_LIST="
1507     avio_dir_cmd_example
1508     avio_reading_example
1509     decode_audio_example
1510     decode_video_example
1511     demuxing_decoding_example
1512     encode_audio_example
1513     encode_video_example
1514     extract_mvs_example
1515     filter_audio_example
1516     filtering_audio_example
1517     filtering_video_example
1518     http_multiclient_example
1519     hw_decode_example
1520     metadata_example
1521     muxing_example
1522     qsvdec_example
1523     remuxing_example
1524     resampling_audio_example
1525     scaling_video_example
1526     transcode_aac_example
1527     transcoding_example
1528 "
1529
1530 EXTERNAL_AUTODETECT_LIBRARY_LIST="
1531     alsa
1532     appkit
1533     avfoundation
1534     bzlib
1535     coreimage
1536     iconv
1537     libxcb
1538     libxcb_shm
1539     libxcb_shape
1540     libxcb_xfixes
1541     lzma
1542     schannel
1543     sdl2
1544     securetransport
1545     sndio
1546     xlib
1547     zlib
1548 "
1549
1550 EXTERNAL_LIBRARY_GPL_LIST="
1551     avisynth
1552     frei0r
1553     libcdio
1554     librubberband
1555     libvidstab
1556     libx264
1557     libx265
1558     libxavs
1559     libxvid
1560 "
1561
1562 EXTERNAL_LIBRARY_NONFREE_LIST="
1563     decklink
1564     libndi_newtek
1565     libfdk_aac
1566     openssl
1567 "
1568
1569 EXTERNAL_LIBRARY_VERSION3_LIST="
1570     gmp
1571     libopencore_amrnb
1572     libopencore_amrwb
1573     libvmaf
1574     libvo_amrwbenc
1575     rkmpp
1576 "
1577
1578 EXTERNAL_LIBRARY_GPLV3_LIST="
1579     libsmbclient
1580 "
1581
1582 EXTERNAL_LIBRARY_LIST="
1583     $EXTERNAL_LIBRARY_GPL_LIST
1584     $EXTERNAL_LIBRARY_NONFREE_LIST
1585     $EXTERNAL_LIBRARY_VERSION3_LIST
1586     $EXTERNAL_LIBRARY_GPLV3_LIST
1587     chromaprint
1588     gcrypt
1589     gnutls
1590     jni
1591     ladspa
1592     libass
1593     libbluray
1594     libbs2b
1595     libcaca
1596     libcelt
1597     libdc1394
1598     libdrm
1599     libflite
1600     libfontconfig
1601     libfreetype
1602     libfribidi
1603     libgme
1604     libgsm
1605     libiec61883
1606     libilbc
1607     libjack
1608     libkvazaar
1609     libmodplug
1610     libmp3lame
1611     libmysofa
1612     libopencv
1613     libopenh264
1614     libopenjpeg
1615     libopenmpt
1616     libopus
1617     libpulse
1618     librsvg
1619     librtmp
1620     libshine
1621     libsmbclient
1622     libsnappy
1623     libsoxr
1624     libspeex
1625     libssh
1626     libtesseract
1627     libtheora
1628     libtwolame
1629     libv4l2
1630     libvorbis
1631     libvpx
1632     libwavpack
1633     libwebp
1634     libxml2
1635     libzimg
1636     libzmq
1637     libzvbi
1638     mediacodec
1639     openal
1640     opencl
1641     opengl
1642 "
1643
1644 HWACCEL_AUTODETECT_LIBRARY_LIST="
1645     audiotoolbox
1646     crystalhd
1647     cuda
1648     cuvid
1649     d3d11va
1650     dxva2
1651     nvdec
1652     nvenc
1653     vaapi
1654     vdpau
1655     videotoolbox
1656     v4l2_m2m
1657     xvmc
1658 "
1659
1660 # catchall list of things that require external libs to link
1661 EXTRALIBS_LIST="
1662     cpu_init
1663     cws2fws
1664 "
1665
1666 HWACCEL_LIBRARY_NONFREE_LIST="
1667     cuda_sdk
1668     libnpp
1669 "
1670
1671 HWACCEL_LIBRARY_LIST="
1672     $HWACCEL_LIBRARY_NONFREE_LIST
1673     libmfx
1674     mmal
1675     omx
1676 "
1677
1678 DOCUMENT_LIST="
1679     doc
1680     htmlpages
1681     manpages
1682     podpages
1683     txtpages
1684 "
1685
1686 FEATURE_LIST="
1687     ftrapv
1688     gray
1689     hardcoded_tables
1690     omx_rpi
1691     runtime_cpudetect
1692     safe_bitstream_reader
1693     shared
1694     small
1695     static
1696     swscale_alpha
1697 "
1698
1699 LIBRARY_LIST="
1700     avcodec
1701     avdevice
1702     avfilter
1703     avformat
1704     avresample
1705     avutil
1706     postproc
1707     swresample
1708     swscale
1709 "
1710
1711 LICENSE_LIST="
1712     gpl
1713     nonfree
1714     version3
1715 "
1716
1717 PROGRAM_LIST="
1718     ffplay
1719     ffprobe
1720     ffserver
1721     ffmpeg
1722 "
1723
1724 SUBSYSTEM_LIST="
1725     dct
1726     dwt
1727     error_resilience
1728     faan
1729     fast_unaligned
1730     fft
1731     lsp
1732     lzo
1733     mdct
1734     pixelutils
1735     network
1736     rdft
1737 "
1738
1739 # COMPONENT_LIST needs to come last to ensure correct dependency checking
1740 CONFIG_LIST="
1741     $DOCUMENT_LIST
1742     $EXAMPLE_LIST
1743     $EXTERNAL_LIBRARY_LIST
1744     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1745     $HWACCEL_LIBRARY_LIST
1746     $HWACCEL_AUTODETECT_LIBRARY_LIST
1747     $FEATURE_LIST
1748     $LICENSE_LIST
1749     $LIBRARY_LIST
1750     $PROGRAM_LIST
1751     $SUBSYSTEM_LIST
1752     autodetect
1753     fontconfig
1754     linux_perf
1755     memory_poisoning
1756     neon_clobber_test
1757     ossfuzz
1758     pic
1759     thumb
1760     valgrind_backtrace
1761     xmm_clobber_test
1762     $COMPONENT_LIST
1763 "
1764
1765 THREADS_LIST="
1766     pthreads
1767     os2threads
1768     w32threads
1769 "
1770
1771 ATOMICS_LIST="
1772     atomics_gcc
1773     atomics_suncc
1774     atomics_win32
1775 "
1776
1777 AUTODETECT_LIBS="
1778     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1779     $HWACCEL_AUTODETECT_LIBRARY_LIST
1780     $THREADS_LIST
1781 "
1782
1783 ARCH_LIST="
1784     aarch64
1785     alpha
1786     arm
1787     avr32
1788     avr32_ap
1789     avr32_uc
1790     bfin
1791     ia64
1792     m68k
1793     mips
1794     mips64
1795     parisc
1796     ppc
1797     ppc64
1798     s390
1799     sh4
1800     sparc
1801     sparc64
1802     tilegx
1803     tilepro
1804     tomi
1805     x86
1806     x86_32
1807     x86_64
1808 "
1809
1810 ARCH_EXT_LIST_ARM="
1811     armv5te
1812     armv6
1813     armv6t2
1814     armv8
1815     neon
1816     vfp
1817     vfpv3
1818     setend
1819 "
1820
1821 ARCH_EXT_LIST_MIPS="
1822     mipsfpu
1823     mips32r2
1824     mips32r5
1825     mips64r2
1826     mips32r6
1827     mips64r6
1828     mipsdsp
1829     mipsdspr2
1830     msa
1831 "
1832
1833 ARCH_EXT_LIST_LOONGSON="
1834     loongson2
1835     loongson3
1836     mmi
1837 "
1838
1839 ARCH_EXT_LIST_X86_SIMD="
1840     aesni
1841     amd3dnow
1842     amd3dnowext
1843     avx
1844     avx2
1845     fma3
1846     fma4
1847     mmx
1848     mmxext
1849     sse
1850     sse2
1851     sse3
1852     sse4
1853     sse42
1854     ssse3
1855     xop
1856 "
1857
1858 ARCH_EXT_LIST_PPC="
1859     altivec
1860     dcbzl
1861     ldbrx
1862     power8
1863     ppc4xx
1864     vsx
1865 "
1866
1867 ARCH_EXT_LIST_X86="
1868     $ARCH_EXT_LIST_X86_SIMD
1869     cpunop
1870     i686
1871 "
1872
1873 ARCH_EXT_LIST="
1874     $ARCH_EXT_LIST_ARM
1875     $ARCH_EXT_LIST_PPC
1876     $ARCH_EXT_LIST_X86
1877     $ARCH_EXT_LIST_MIPS
1878     $ARCH_EXT_LIST_LOONGSON
1879 "
1880
1881 ARCH_FEATURES="
1882     aligned_stack
1883     fast_64bit
1884     fast_clz
1885     fast_cmov
1886     local_aligned
1887     simd_align_16
1888     simd_align_32
1889 "
1890
1891 BUILTIN_LIST="
1892     atomic_cas_ptr
1893     machine_rw_barrier
1894     MemoryBarrier
1895     mm_empty
1896     rdtsc
1897     sarestart
1898     sem_timedwait
1899     sync_val_compare_and_swap
1900 "
1901 HAVE_LIST_CMDLINE="
1902     inline_asm
1903     symver
1904     x86asm
1905 "
1906
1907 HAVE_LIST_PUB="
1908     bigendian
1909     fast_unaligned
1910 "
1911
1912 HEADERS_LIST="
1913     arpa_inet_h
1914     asm_types_h
1915     cdio_paranoia_h
1916     cdio_paranoia_paranoia_h
1917     cuda_h
1918     dispatch_dispatch_h
1919     dev_bktr_ioctl_bt848_h
1920     dev_bktr_ioctl_meteor_h
1921     dev_ic_bt8xx_h
1922     dev_video_bktr_ioctl_bt848_h
1923     dev_video_meteor_ioctl_meteor_h
1924     direct_h
1925     dirent_h
1926     dxgidebug_h
1927     dxva_h
1928     ES2_gl_h
1929     gsm_h
1930     io_h
1931     mach_mach_time_h
1932     machine_ioctl_bt848_h
1933     machine_ioctl_meteor_h
1934     malloc_h
1935     opencv2_core_core_c_h
1936     OpenGL_gl3_h
1937     poll_h
1938     soundcard_h
1939     stdatomic_h
1940     sys_param_h
1941     sys_resource_h
1942     sys_select_h
1943     sys_soundcard_h
1944     sys_time_h
1945     sys_un_h
1946     sys_videoio_h
1947     termios_h
1948     udplite_h
1949     unistd_h
1950     valgrind_valgrind_h
1951     windows_h
1952     winsock2_h
1953 "
1954
1955 INTRINSICS_LIST="
1956     intrinsics_neon
1957 "
1958
1959 COMPLEX_FUNCS="
1960     cabs
1961     cexp
1962 "
1963
1964 MATH_FUNCS="
1965     atanf
1966     atan2f
1967     cbrt
1968     cbrtf
1969     copysign
1970     cosf
1971     erf
1972     exp2
1973     exp2f
1974     expf
1975     hypot
1976     isfinite
1977     isinf
1978     isnan
1979     ldexpf
1980     llrint
1981     llrintf
1982     log2
1983     log2f
1984     log10f
1985     lrint
1986     lrintf
1987     powf
1988     rint
1989     round
1990     roundf
1991     sinf
1992     trunc
1993     truncf
1994 "
1995
1996 SYSTEM_FUNCS="
1997     access
1998     aligned_malloc
1999     arc4random
2000     clock_gettime
2001     closesocket
2002     CommandLineToArgvW
2003     CryptGenRandom
2004     fcntl
2005     fork
2006     getaddrinfo
2007     gethrtime
2008     getopt
2009     GetProcessAffinityMask
2010     GetProcessMemoryInfo
2011     GetProcessTimes
2012     getrusage
2013     GetSystemTimeAsFileTime
2014     gettimeofday
2015     glob
2016     glXGetProcAddress
2017     gmtime_r
2018     inet_aton
2019     isatty
2020     kbhit
2021     localtime_r
2022     lstat
2023     lzo1x_999_compress
2024     mach_absolute_time
2025     MapViewOfFile
2026     memalign
2027     mkstemp
2028     mmap
2029     mprotect
2030     nanosleep
2031     PeekNamedPipe
2032     posix_memalign
2033     pthread_cancel
2034     sched_getaffinity
2035     SetConsoleTextAttribute
2036     SetConsoleCtrlHandler
2037     setmode
2038     setrlimit
2039     Sleep
2040     strerror_r
2041     sysconf
2042     sysctl
2043     usleep
2044     UTGetOSTypeFromString
2045     VirtualAlloc
2046     wglGetProcAddress
2047 "
2048
2049 TOOLCHAIN_FEATURES="
2050     as_arch_directive
2051     as_fpu_directive
2052     as_func
2053     as_object_arch
2054     asm_mod_q
2055     attribute_may_alias
2056     attribute_packed
2057     blocks_extension
2058     ebp_available
2059     ebx_available
2060     gnu_as
2061     gnu_windres
2062     ibm_asm
2063     inline_asm_direct_symbol_refs
2064     inline_asm_labels
2065     inline_asm_nonlocal_labels
2066     pragma_deprecated
2067     rsync_contimeout
2068     symver_asm_label
2069     symver_gnu_asm
2070     vfp_args
2071     xform_asm
2072     xmm_clobbers
2073 "
2074
2075 TYPES_LIST="
2076     CONDITION_VARIABLE_Ptr
2077     kCMVideoCodecType_HEVC
2078     socklen_t
2079     struct_addrinfo
2080     struct_group_source_req
2081     struct_ip_mreq_source
2082     struct_ipv6_mreq
2083     struct_msghdr_msg_flags
2084     struct_pollfd
2085     struct_rusage_ru_maxrss
2086     struct_sctp_event_subscribe
2087     struct_sockaddr_in6
2088     struct_sockaddr_sa_len
2089     struct_sockaddr_storage
2090     struct_stat_st_mtim_tv_nsec
2091     struct_v4l2_frmivalenum_discrete
2092 "
2093
2094 HAVE_LIST="
2095     $ARCH_EXT_LIST
2096     $(add_suffix _external $ARCH_EXT_LIST)
2097     $(add_suffix _inline   $ARCH_EXT_LIST)
2098     $ARCH_FEATURES
2099     $ATOMICS_LIST
2100     $BUILTIN_LIST
2101     $COMPLEX_FUNCS
2102     $HAVE_LIST_CMDLINE
2103     $HAVE_LIST_PUB
2104     $HEADERS_LIST
2105     $INTRINSICS_LIST
2106     $MATH_FUNCS
2107     $SYSTEM_FUNCS
2108     $THREADS_LIST
2109     $TOOLCHAIN_FEATURES
2110     $TYPES_LIST
2111     atomics_native
2112     dos_paths
2113     libc_msvcrt
2114     makeinfo
2115     makeinfo_html
2116     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
2117     perl
2118     pod2man
2119     section_data_rel_ro
2120     texi2html
2121     threads
2122     uwp
2123     vaapi_drm
2124     vaapi_x11
2125     vdpau_x11
2126     winrt
2127 "
2128
2129 # options emitted with CONFIG_ prefix but not available on the command line
2130 CONFIG_EXTRA="
2131     aandcttables
2132     ac3dsp
2133     adts_header
2134     audio_frame_queue
2135     audiodsp
2136     blockdsp
2137     bswapdsp
2138     cabac
2139     cbs
2140     cbs_h264
2141     cbs_h265
2142     cbs_mpeg2
2143     dirac_parse
2144     dvprofile
2145     exif
2146     faandct
2147     faanidct
2148     fdctdsp
2149     flacdsp
2150     fmtconvert
2151     frame_thread_encoder
2152     g722dsp
2153     golomb
2154     gplv3
2155     h263dsp
2156     h264chroma
2157     h264dsp
2158     h264parse
2159     h264pred
2160     h264qpel
2161     hevcparse
2162     hpeldsp
2163     huffman
2164     huffyuvdsp
2165     huffyuvencdsp
2166     idctdsp
2167     iirfilter
2168     mdct15
2169     intrax8
2170     iso_media
2171     ividsp
2172     jpegtables
2173     lgplv3
2174     libx262
2175     llauddsp
2176     llviddsp
2177     llvidencdsp
2178     lpc
2179     lzf
2180     me_cmp
2181     mpeg_er
2182     mpegaudio
2183     mpegaudiodsp
2184     mpegaudioheader
2185     mpegvideo
2186     mpegvideoenc
2187     mss34dsp
2188     pixblockdsp
2189     qpeldsp
2190     qsv
2191     qsvdec
2192     qsvenc
2193     qsvvpp
2194     rangecoder
2195     riffdec
2196     riffenc
2197     rtpdec
2198     rtpenc_chain
2199     rv34dsp
2200     sinewin
2201     snappy
2202     srtp
2203     startcode
2204     texturedsp
2205     texturedspenc
2206     tpeldsp
2207     vaapi_1
2208     vaapi_encode
2209     vc1dsp
2210     videodsp
2211     vp3dsp
2212     vp56dsp
2213     vp8dsp
2214     wma_freqs
2215     wmv2dsp
2216 "
2217
2218 CMDLINE_SELECT="
2219     $ARCH_EXT_LIST
2220     $CONFIG_LIST
2221     $HAVE_LIST_CMDLINE
2222     $THREADS_LIST
2223     asm
2224     cross_compile
2225     debug
2226     extra_warnings
2227     logging
2228     lto
2229     optimizations
2230     rpath
2231     stripping
2232 "
2233
2234 PATHS_LIST="
2235     bindir
2236     datadir
2237     docdir
2238     incdir
2239     libdir
2240     mandir
2241     pkgconfigdir
2242     prefix
2243     shlibdir
2244     install_name_dir
2245 "
2246
2247 CMDLINE_SET="
2248     $PATHS_LIST
2249     ar
2250     arch
2251     as
2252     assert_level
2253     build_suffix
2254     cc
2255     objcc
2256     cpu
2257     cross_prefix
2258     custom_allocator
2259     cxx
2260     dep_cc
2261     doxygen
2262     env
2263     extra_version
2264     gas
2265     host_cc
2266     host_cflags
2267     host_extralibs
2268     host_ld
2269     host_ldflags
2270     host_os
2271     ignore_tests
2272     install
2273     ld
2274     ln_s
2275     logfile
2276     malloc_prefix
2277     nm
2278     optflags
2279     nvccflags
2280     pkg_config
2281     pkg_config_flags
2282     progs_suffix
2283     random_seed
2284     ranlib
2285     samples
2286     strip
2287     sws_max_filter_size
2288     sysinclude
2289     sysroot
2290     target_exec
2291     target_os
2292     target_path
2293     target_samples
2294     tempprefix
2295     toolchain
2296     valgrind
2297     x86asmexe
2298 "
2299
2300 CMDLINE_APPEND="
2301     extra_cflags
2302     extra_cxxflags
2303     extra_objcflags
2304     host_cppflags
2305 "
2306
2307 # code dependency declarations
2308
2309 # architecture extensions
2310
2311 armv5te_deps="arm"
2312 armv6_deps="arm"
2313 armv6t2_deps="arm"
2314 armv8_deps="aarch64"
2315 neon_deps_any="aarch64 arm"
2316 intrinsics_neon_deps="neon"
2317 vfp_deps_any="aarch64 arm"
2318 vfpv3_deps="vfp"
2319 setend_deps="arm"
2320
2321 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2322
2323 altivec_deps="ppc"
2324 dcbzl_deps="ppc"
2325 ldbrx_deps="ppc"
2326 ppc4xx_deps="ppc"
2327 vsx_deps="altivec"
2328 power8_deps="vsx"
2329
2330 loongson2_deps="mips"
2331 loongson3_deps="mips"
2332 mips32r2_deps="mips"
2333 mips32r5_deps="mips"
2334 mips32r6_deps="mips"
2335 mips64r2_deps="mips"
2336 mips64r6_deps="mips"
2337 mipsfpu_deps="mips"
2338 mipsdsp_deps="mips"
2339 mipsdspr2_deps="mips"
2340 mmi_deps="mips"
2341 msa_deps="mipsfpu"
2342
2343 cpunop_deps="i686"
2344 x86_64_select="i686"
2345 x86_64_suggest="fast_cmov"
2346
2347 amd3dnow_deps="mmx"
2348 amd3dnowext_deps="amd3dnow"
2349 i686_deps="x86"
2350 mmx_deps="x86"
2351 mmxext_deps="mmx"
2352 sse_deps="mmxext"
2353 sse2_deps="sse"
2354 sse3_deps="sse2"
2355 ssse3_deps="sse3"
2356 sse4_deps="ssse3"
2357 sse42_deps="sse4"
2358 aesni_deps="sse42"
2359 avx_deps="sse42"
2360 xop_deps="avx"
2361 fma3_deps="avx"
2362 fma4_deps="avx"
2363 avx2_deps="avx"
2364
2365 mmx_external_deps="x86asm"
2366 mmx_inline_deps="inline_asm x86"
2367 mmx_suggest="mmx_external mmx_inline"
2368
2369 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2370     eval dep=\$${ext}_deps
2371     eval ${ext}_external_deps='"${dep}_external"'
2372     eval ${ext}_inline_deps='"${dep}_inline"'
2373     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2374 done
2375
2376 aligned_stack_if_any="aarch64 ppc x86"
2377 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2378 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2379 fast_unaligned_if_any="aarch64 ppc x86"
2380 simd_align_16_if_any="altivec neon sse"
2381 simd_align_32_if_any="avx"
2382
2383 # system capabilities
2384 symver_if_any="symver_asm_label symver_gnu_asm"
2385 valgrind_backtrace_conflict="optimizations"
2386 valgrind_backtrace_deps="valgrind_valgrind_h"
2387
2388 # threading support
2389 atomics_gcc_if="sync_val_compare_and_swap"
2390 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2391 atomics_win32_if="MemoryBarrier"
2392 atomics_native_if_any="$ATOMICS_LIST"
2393 w32threads_deps="atomics_native"
2394 threads_if_any="$THREADS_LIST"
2395
2396 # subsystems
2397 cbs_h264_select="cbs golomb"
2398 cbs_h265_select="cbs golomb"
2399 cbs_mpeg2_select="cbs"
2400 dct_select="rdft"
2401 dirac_parse_select="golomb"
2402 error_resilience_select="me_cmp"
2403 faandct_deps="faan"
2404 faandct_select="fdctdsp"
2405 faanidct_deps="faan"
2406 faanidct_select="idctdsp"
2407 h264dsp_select="startcode"
2408 hevcparse_select="golomb"
2409 frame_thread_encoder_deps="encoders threads"
2410 intrax8_select="blockdsp idctdsp"
2411 mdct_select="fft"
2412 mdct15_select="fft"
2413 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2414 mpeg_er_select="error_resilience"
2415 mpegaudio_select="mpegaudiodsp mpegaudioheader"
2416 mpegaudiodsp_select="dct"
2417 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2418 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
2419 vc1dsp_select="h264chroma qpeldsp startcode"
2420 rdft_select="fft"
2421
2422 # decoders / encoders
2423 aac_decoder_select="adts_header mdct15 mdct sinewin"
2424 aac_fixed_decoder_select="mdct sinewin"
2425 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2426 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2427 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2428 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2429 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2430 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2431 adpcm_g722_decoder_select="g722dsp"
2432 adpcm_g722_encoder_select="g722dsp"
2433 aic_decoder_select="golomb idctdsp"
2434 alac_encoder_select="lpc"
2435 als_decoder_select="bswapdsp"
2436 amrnb_decoder_select="lsp"
2437 amrwb_decoder_select="lsp"
2438 amv_decoder_select="sp5x_decoder exif"
2439 amv_encoder_select="aandcttables jpegtables mpegvideoenc"
2440 ape_decoder_select="bswapdsp llauddsp"
2441 apng_decoder_select="zlib"
2442 apng_encoder_select="llvidencdsp zlib"
2443 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2444 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2445 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2446 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2447 atrac1_decoder_select="mdct sinewin"
2448 atrac3_decoder_select="mdct"
2449 atrac3p_decoder_select="mdct sinewin"
2450 avrn_decoder_select="exif jpegtables"
2451 bink_decoder_select="blockdsp hpeldsp"
2452 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2453 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2454 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2455 clearvideo_decoder_select="idctdsp"
2456 cllc_decoder_select="bswapdsp"
2457 comfortnoise_encoder_select="lpc"
2458 cook_decoder_select="audiodsp mdct sinewin"
2459 cscd_decoder_select="lzo"
2460 cscd_decoder_suggest="zlib"
2461 dca_decoder_select="mdct"
2462 dds_decoder_select="texturedsp"
2463 dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
2464 dnxhd_decoder_select="blockdsp idctdsp"
2465 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2466 dolby_e_decoder_select="mdct"
2467 dvvideo_decoder_select="dvprofile idctdsp"
2468 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2469 dxa_decoder_select="zlib"
2470 dxv_decoder_select="lzf texturedsp"
2471 eac3_decoder_select="ac3_decoder"
2472 eac3_encoder_select="ac3_encoder"
2473 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2474 eatgq_decoder_select="aandcttables"
2475 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2476 exr_decoder_select="zlib"
2477 ffv1_decoder_select="rangecoder"
2478 ffv1_encoder_select="rangecoder"
2479 ffvhuff_decoder_select="huffyuv_decoder"
2480 ffvhuff_encoder_select="huffyuv_encoder"
2481 fic_decoder_select="golomb"
2482 flac_decoder_select="flacdsp"
2483 flac_encoder_select="bswapdsp flacdsp lpc"
2484 flashsv2_decoder_select="zlib"
2485 flashsv2_encoder_select="zlib"
2486 flashsv_decoder_select="zlib"
2487 flashsv_encoder_select="zlib"
2488 flv_decoder_select="h263_decoder"
2489 flv_encoder_select="h263_encoder"
2490 fourxm_decoder_select="blockdsp bswapdsp"
2491 fraps_decoder_select="bswapdsp huffman"
2492 g2m_decoder_select="blockdsp idctdsp jpegtables zlib"
2493 g729_decoder_select="audiodsp"
2494 h261_decoder_select="mpegvideo"
2495 h261_encoder_select="aandcttables mpegvideoenc"
2496 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2497 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2498 h263i_decoder_select="h263_decoder"
2499 h263p_decoder_select="h263_decoder"
2500 h263p_encoder_select="h263_encoder"
2501 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
2502 h264_decoder_suggest="error_resilience"
2503 hap_decoder_select="snappy texturedsp"
2504 hap_encoder_deps="libsnappy"
2505 hap_encoder_select="texturedspenc"
2506 hevc_decoder_select="bswapdsp cabac golomb hevcparse videodsp"
2507 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2508 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llvidencdsp"
2509 iac_decoder_select="imc_decoder"
2510 imc_decoder_select="bswapdsp fft mdct sinewin"
2511 indeo3_decoder_select="hpeldsp"
2512 indeo4_decoder_select="ividsp"
2513 indeo5_decoder_select="ividsp"
2514 interplay_video_decoder_select="hpeldsp"
2515 jpegls_decoder_select="mjpeg_decoder"
2516 jv_decoder_select="blockdsp"
2517 lagarith_decoder_select="llviddsp"
2518 ljpeg_encoder_select="aandcttables idctdsp jpegtables mpegvideoenc"
2519 magicyuv_decoder_select="llviddsp"
2520 magicyuv_encoder_select="llvidencdsp"
2521 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2522 metasound_decoder_select="lsp mdct sinewin"
2523 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2524 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2525 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2526 mjpegb_decoder_select="mjpeg_decoder"
2527 mlp_decoder_select="mlp_parser"
2528 mlp_encoder_select="lpc"
2529 motionpixels_decoder_select="bswapdsp"
2530 mp1_decoder_select="mpegaudio"
2531 mp1float_decoder_select="mpegaudio"
2532 mp2_decoder_select="mpegaudio"
2533 mp2float_decoder_select="mpegaudio"
2534 mp3_decoder_select="mpegaudio"
2535 mp3adu_decoder_select="mpegaudio"
2536 mp3adufloat_decoder_select="mpegaudio"
2537 mp3float_decoder_select="mpegaudio"
2538 mp3on4_decoder_select="mpegaudio"
2539 mp3on4float_decoder_select="mpegaudio"
2540 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2541 mpc8_decoder_select="mpegaudiodsp"
2542 mpegvideo_decoder_select="mpegvideo"
2543 mpeg1video_decoder_select="mpegvideo"
2544 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2545 mpeg2video_decoder_select="mpegvideo"
2546 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2547 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2548 mpeg4_encoder_select="h263_encoder"
2549 msa1_decoder_select="mss34dsp"
2550 mscc_decoder_select="zlib"
2551 msmpeg4v1_decoder_select="h263_decoder"
2552 msmpeg4v2_decoder_select="h263_decoder"
2553 msmpeg4v2_encoder_select="h263_encoder"
2554 msmpeg4v3_decoder_select="h263_decoder"
2555 msmpeg4v3_encoder_select="h263_encoder"
2556 mss2_decoder_select="mpegvideo qpeldsp vc1_decoder"
2557 mts2_decoder_select="mss34dsp"
2558 mxpeg_decoder_select="mjpeg_decoder"
2559 nellymoser_decoder_select="mdct sinewin"
2560 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2561 nuv_decoder_select="idctdsp lzo"
2562 on2avc_decoder_select="mdct"
2563 opus_decoder_deps="swresample"
2564 opus_decoder_select="mdct15"
2565 opus_encoder_select="audio_frame_queue mdct15"
2566 png_decoder_select="zlib"
2567 png_encoder_select="llvidencdsp zlib"
2568 prores_decoder_select="blockdsp idctdsp"
2569 prores_encoder_select="fdctdsp"
2570 qcelp_decoder_select="lsp"
2571 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2572 ra_144_decoder_select="audiodsp"
2573 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2574 ralf_decoder_select="golomb"
2575 rawvideo_decoder_select="bswapdsp"
2576 rscc_decoder_select="zlib"
2577 rtjpeg_decoder_select="me_cmp"
2578 rv10_decoder_select="h263_decoder"
2579 rv10_encoder_select="h263_encoder"
2580 rv20_decoder_select="h263_decoder"
2581 rv20_encoder_select="h263_encoder"
2582 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2583 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2584 screenpresso_decoder_select="zlib"
2585 shorten_decoder_select="bswapdsp"
2586 sipr_decoder_select="lsp"
2587 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2588 snow_encoder_select="aandcttables dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2589 sonic_decoder_select="golomb rangecoder"
2590 sonic_encoder_select="golomb rangecoder"
2591 sonic_ls_encoder_select="golomb rangecoder"
2592 sp5x_decoder_select="mjpeg_decoder"
2593 srgc_decoder_select="zlib"
2594 svq1_decoder_select="hpeldsp"
2595 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2596 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2597 svq3_decoder_suggest="zlib"
2598 tak_decoder_select="audiodsp"
2599 tdsc_decoder_select="zlib mjpeg_decoder"
2600 theora_decoder_select="vp3_decoder"
2601 thp_decoder_select="mjpeg_decoder"
2602 tiff_decoder_suggest="zlib lzma"
2603 tiff_encoder_suggest="zlib"
2604 truehd_decoder_select="mlp_parser"
2605 truehd_encoder_select="lpc"
2606 truemotion2_decoder_select="bswapdsp"
2607 truespeech_decoder_select="bswapdsp"
2608 tscc_decoder_select="zlib"
2609 twinvq_decoder_select="mdct lsp sinewin"
2610 txd_decoder_select="texturedsp"
2611 utvideo_decoder_select="bswapdsp llviddsp"
2612 utvideo_encoder_select="bswapdsp huffman llvidencdsp"
2613 vble_decoder_select="llviddsp"
2614 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 mpegvideo vc1dsp"
2615 vc1image_decoder_select="vc1_decoder"
2616 vorbis_decoder_select="mdct"
2617 vorbis_encoder_select="mdct"
2618 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2619 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2620 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2621 vp6a_decoder_select="vp6_decoder"
2622 vp6f_decoder_select="vp6_decoder"
2623 vp7_decoder_select="h264pred videodsp vp8dsp"
2624 vp8_decoder_select="h264pred videodsp vp8dsp"
2625 vp9_decoder_select="videodsp vp9_parser"
2626 webp_decoder_select="vp8_decoder exif"
2627 wmalossless_decoder_select="llauddsp"
2628 wmapro_decoder_select="mdct sinewin wma_freqs"
2629 wmav1_decoder_select="mdct sinewin wma_freqs"
2630 wmav1_encoder_select="mdct sinewin wma_freqs"
2631 wmav2_decoder_select="mdct sinewin wma_freqs"
2632 wmav2_encoder_select="mdct sinewin wma_freqs"
2633 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2634 wmv1_decoder_select="h263_decoder"
2635 wmv1_encoder_select="h263_encoder"
2636 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2637 wmv2_encoder_select="h263_encoder wmv2dsp"
2638 wmv3_decoder_select="vc1_decoder"
2639 wmv3image_decoder_select="wmv3_decoder"
2640 xma1_decoder_select="wmapro_decoder"
2641 xma2_decoder_select="wmapro_decoder"
2642 zerocodec_decoder_select="zlib"
2643 zlib_decoder_select="zlib"
2644 zlib_encoder_select="zlib"
2645 zmbv_decoder_select="zlib"
2646 zmbv_encoder_select="zlib"
2647
2648 # hardware accelerators
2649 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2650 cuda_deps_any="libdl LoadLibrary"
2651 cuvid_deps="cuda"
2652 d3d11va_deps="dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2653 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode ole32 user32"
2654 videotoolbox_hwaccel_deps="videotoolbox pthreads"
2655 videotoolbox_hwaccel_extralibs="-framework QuartzCore"
2656 xvmc_deps="X11_extensions_XvMClib_h"
2657
2658 h263_vaapi_hwaccel_deps="vaapi"
2659 h263_vaapi_hwaccel_select="h263_decoder"
2660 h263_videotoolbox_hwaccel_deps="videotoolbox"
2661 h263_videotoolbox_hwaccel_select="h263_decoder"
2662 h264_cuvid_hwaccel_deps="cuda cuvid"
2663 h264_cuvid_hwaccel_select="h264_cuvid_decoder"
2664 h264_d3d11va_hwaccel_deps="d3d11va"
2665 h264_d3d11va_hwaccel_select="h264_decoder"
2666 h264_d3d11va2_hwaccel_deps="d3d11va"
2667 h264_d3d11va2_hwaccel_select="h264_decoder"
2668 h264_dxva2_hwaccel_deps="dxva2"
2669 h264_dxva2_hwaccel_select="h264_decoder"
2670 h264_mediacodec_hwaccel_deps="mediacodec"
2671 h264_mmal_hwaccel_deps="mmal"
2672 h264_nvdec_hwaccel_deps="cuda nvdec"
2673 h264_nvdec_hwaccel_select="h264_decoder"
2674 h264_qsv_hwaccel_deps="libmfx"
2675 h264_vaapi_hwaccel_deps="vaapi"
2676 h264_vaapi_hwaccel_select="h264_decoder"
2677 h264_vdpau_hwaccel_deps="vdpau"
2678 h264_vdpau_hwaccel_select="h264_decoder"
2679 h264_videotoolbox_hwaccel_deps="videotoolbox"
2680 h264_videotoolbox_hwaccel_select="h264_decoder"
2681 hevc_cuvid_hwaccel_deps="cuda cuvid"
2682 hevc_cuvid_hwaccel_select="hevc_cuvid_decoder"
2683 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2684 hevc_d3d11va_hwaccel_select="hevc_decoder"
2685 hevc_mediacodec_hwaccel_deps="mediacodec"
2686 hevc_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2687 hevc_d3d11va2_hwaccel_select="hevc_decoder"
2688 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2689 hevc_dxva2_hwaccel_select="hevc_decoder"
2690 hevc_nvdec_hwaccel_deps="cuda nvdec"
2691 hevc_nvdec_hwaccel_select="hevc_decoder"
2692 hevc_qsv_hwaccel_deps="libmfx"
2693 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2694 hevc_vaapi_hwaccel_select="hevc_decoder"
2695 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2696 hevc_vdpau_hwaccel_select="hevc_decoder"
2697 hevc_videotoolbox_hwaccel_deps="videotoolbox"
2698 hevc_videotoolbox_hwaccel_select="hevc_decoder"
2699 mjpeg_cuvid_hwaccel_deps="cuda cuvid"
2700 mjpeg_cuvid_hwaccel_select="mjpeg_cuvid_decoder"
2701 mpeg_xvmc_hwaccel_deps="xvmc"
2702 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2703 mpeg1_cuvid_hwaccel_deps="cuda cuvid"
2704 mpeg1_cuvid_hwaccel_select="mpeg1_cuvid_decoder"
2705 mpeg1_vdpau_hwaccel_deps="vdpau"
2706 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2707 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2708 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2709 mpeg1_xvmc_hwaccel_deps="xvmc"
2710 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2711 mpeg2_cuvid_hwaccel_deps="cuda cuvid"
2712 mpeg2_cuvid_hwaccel_select="mpeg2_cuvid_decoder"
2713 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2714 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2715 mpeg2_d3d11va2_hwaccel_deps="d3d11va"
2716 mpeg2_d3d11va2_hwaccel_select="mpeg2video_decoder"
2717 mpeg2_dxva2_hwaccel_deps="dxva2"
2718 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2719 mpeg2_mediacodec_hwaccel_deps="mediacodec"
2720 mpeg2_mmal_hwaccel_deps="mmal"
2721 mpeg2_qsv_hwaccel_deps="libmfx"
2722 mpeg2_vaapi_hwaccel_deps="vaapi"
2723 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2724 mpeg2_vdpau_hwaccel_deps="vdpau"
2725 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2726 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2727 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2728 mpeg2_xvmc_hwaccel_deps="xvmc"
2729 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2730 mpeg4_cuvid_hwaccel_deps="cuda cuvid"
2731 mpeg4_cuvid_hwaccel_select="mpeg4_cuvid_decoder"
2732 mpeg4_mediacodec_hwaccel_deps="mediacodec"
2733 mpeg4_mmal_hwaccel_deps="mmal"
2734 mpeg4_vaapi_hwaccel_deps="vaapi"
2735 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2736 mpeg4_vdpau_hwaccel_deps="vdpau"
2737 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2738 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2739 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2740 vc1_cuvid_hwaccel_deps="cuda cuvid"
2741 vc1_cuvid_hwaccel_select="vc1_cuvid_decoder"
2742 vc1_d3d11va_hwaccel_deps="d3d11va"
2743 vc1_d3d11va_hwaccel_select="vc1_decoder"
2744 vc1_d3d11va2_hwaccel_deps="d3d11va"
2745 vc1_d3d11va2_hwaccel_select="vc1_decoder"
2746 vc1_dxva2_hwaccel_deps="dxva2"
2747 vc1_dxva2_hwaccel_select="vc1_decoder"
2748 vc1_mmal_hwaccel_deps="mmal"
2749 vc1_qsv_hwaccel_deps="libmfx"
2750 vc1_vaapi_hwaccel_deps="vaapi"
2751 vc1_vaapi_hwaccel_select="vc1_decoder"
2752 vc1_vdpau_hwaccel_deps="vdpau"
2753 vc1_vdpau_hwaccel_select="vc1_decoder"
2754 vp8_cuvid_hwaccel_deps="cuda cuvid"
2755 vp8_cuvid_hwaccel_select="vp8_cuvid_decoder"
2756 vp9_cuvid_hwaccel_deps="cuda cuvid"
2757 vp9_cuvid_hwaccel_select="vp9_cuvid_decoder"
2758 vp8_mediacodec_hwaccel_deps="mediacodec"
2759 vp8_qsv_hwaccel_deps="libmfx"
2760 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2761 vp9_d3d11va_hwaccel_select="vp9_decoder"
2762 vp9_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2763 vp9_d3d11va2_hwaccel_select="vp9_decoder"
2764 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
2765 vp9_dxva2_hwaccel_select="vp9_decoder"
2766 vp9_mediacodec_hwaccel_deps="mediacodec"
2767 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9_bit_depth"
2768 vp9_vaapi_hwaccel_select="vp9_decoder"
2769 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2770 wmv3_d3d11va2_hwaccel_select="vc1_d3d11va2_hwaccel"
2771 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2772 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2773 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2774
2775 # hardware-accelerated codecs
2776 omx_deps="libdl pthreads"
2777 omx_rpi_select="omx"
2778 qsv_deps="libmfx"
2779 qsvdec_select="qsv"
2780 qsvenc_select="qsv"
2781 qsvvpp_select="qsv"
2782 vaapi_encode_deps="vaapi"
2783 v4l2_m2m_deps_any="linux_videodev2_h"
2784
2785 hwupload_cuda_filter_deps="cuda"
2786 scale_npp_filter_deps="cuda libnpp"
2787 scale_cuda_filter_deps="cuda_sdk"
2788 thumbnail_cuda_filter_deps="cuda_sdk"
2789
2790 nvenc_deps="cuda"
2791 nvenc_deps_any="libdl LoadLibrary"
2792 nvenc_encoder_deps="nvenc"
2793
2794 h263_v4l2m2m_decoder_deps="v4l2_m2m h263_v4l2_m2m"
2795 h263_v4l2m2m_encoder_deps="v4l2_m2m h263_v4l2_m2m"
2796 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2797 h264_cuvid_decoder_deps="cuda cuvid"
2798 h264_cuvid_decoder_select="h264_mp4toannexb_bsf"
2799 h264_mediacodec_decoder_deps="mediacodec"
2800 h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
2801 h264_mmal_decoder_deps="mmal"
2802 h264_nvenc_encoder_deps="nvenc"
2803 h264_omx_encoder_deps="omx"
2804 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2805 h264_qsv_encoder_select="qsvenc"
2806 h264_rkmpp_decoder_deps="rkmpp"
2807 h264_rkmpp_decoder_select="h264_mp4toannexb_bsf"
2808 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2809 h264_vaapi_encoder_select="cbs_h264 vaapi_encode"
2810 h264_v4l2m2m_decoder_deps="v4l2_m2m h264_v4l2_m2m"
2811 h264_v4l2m2m_encoder_deps="v4l2_m2m h264_v4l2_m2m"
2812 hevc_cuvid_decoder_deps="cuda cuvid"
2813 hevc_cuvid_decoder_select="hevc_mp4toannexb_bsf"
2814 hevc_mediacodec_decoder_deps="mediacodec"
2815 hevc_mediacodec_decoder_select="hevc_mp4toannexb_bsf hevc_parser"
2816 hevc_nvenc_encoder_deps="nvenc"
2817 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec hevc_qsv_hwaccel"
2818 hevc_qsv_encoder_select="hevcparse qsvenc"
2819 hevc_rkmpp_decoder_deps="rkmpp"
2820 hevc_rkmpp_decoder_select="hevc_mp4toannexb_bsf"
2821 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2822 hevc_vaapi_encoder_select="cbs_h265 vaapi_encode"
2823 hevc_v4l2m2m_decoder_deps="v4l2_m2m hevc_v4l2_m2m"
2824 hevc_v4l2m2m_encoder_deps="v4l2_m2m hevc_v4l2_m2m"
2825 mjpeg_cuvid_decoder_deps="cuda cuvid"
2826 mjpeg_qsv_encoder_deps="libmfx"
2827 mjpeg_qsv_encoder_select="qsvenc"
2828 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2829 mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
2830 mpeg1_cuvid_decoder_deps="cuda cuvid"
2831 mpeg1_v4l2m2m_decoder_deps="v4l2_m2m mpeg1_v4l2_m2m"
2832 mpeg2_crystalhd_decoder_select="crystalhd"
2833 mpeg2_cuvid_decoder_deps="cuda cuvid"
2834 mpeg2_mmal_decoder_deps="mmal"
2835 mpeg2_mediacodec_decoder_deps="mediacodec"
2836 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel"
2837 mpeg2_qsv_encoder_select="qsvenc"
2838 mpeg2_vaapi_encoder_deps="VAEncPictureParameterBufferMPEG2"
2839 mpeg2_vaapi_encoder_select="cbs_mpeg2 vaapi_encode"
2840 mpeg2_v4l2m2m_decoder_deps="v4l2_m2m mpeg2_v4l2_m2m"
2841 mpeg4_crystalhd_decoder_select="crystalhd"
2842 mpeg4_cuvid_decoder_deps="cuda cuvid"
2843 mpeg4_mediacodec_decoder_deps="mediacodec"
2844 mpeg4_mmal_decoder_deps="mmal"
2845 mpeg4_omx_encoder_deps="omx"
2846 mpeg4_v4l2m2m_decoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
2847 mpeg4_v4l2m2m_encoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
2848 msmpeg4_crystalhd_decoder_select="crystalhd"
2849 nvenc_h264_encoder_select="h264_nvenc_encoder"
2850 nvenc_hevc_encoder_select="hevc_nvenc_encoder"
2851 vc1_crystalhd_decoder_select="crystalhd"
2852 vc1_cuvid_decoder_deps="cuda cuvid"
2853 vc1_mmal_decoder_deps="mmal"
2854 vc1_qsv_decoder_select="qsvdec vc1_qsv_hwaccel vc1_parser"
2855 vc1_v4l2m2m_decoder_deps="v4l2_m2m vc1_v4l2_m2m"
2856 vp8_cuvid_decoder_deps="cuda cuvid"
2857 vp8_mediacodec_decoder_deps="mediacodec"
2858 vp8_qsv_decoder_select="qsvdec vp8_qsv_hwaccel vp8_parser"
2859 vp8_rkmpp_decoder_deps="rkmpp"
2860 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
2861 vp8_vaapi_encoder_select="vaapi_encode"
2862 vp8_v4l2m2m_decoder_deps="v4l2_m2m vp8_v4l2_m2m"
2863 vp8_v4l2m2m_encoder_deps="v4l2_m2m vp8_v4l2_m2m"
2864 vp9_cuvid_decoder_deps="cuda cuvid"
2865 vp9_mediacodec_decoder_deps="mediacodec"
2866 vp9_rkmpp_decoder_deps="rkmpp"
2867 vp9_vaapi_encoder_deps="VAEncPictureParameterBufferVP9"
2868 vp9_vaapi_encoder_select="vaapi_encode"
2869 vp9_v4l2m2m_decoder_deps="v4l2_m2m vp9_v4l2_m2m"
2870 wmv3_crystalhd_decoder_select="crystalhd"
2871
2872 # parsers
2873 aac_parser_select="adts_header"
2874 h264_parser_select="golomb h264dsp h264parse"
2875 hevc_parser_select="hevcparse"
2876 mpegaudio_parser_select="mpegaudioheader"
2877 mpegvideo_parser_select="mpegvideo"
2878 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
2879 vc1_parser_select="vc1dsp"
2880
2881 # bitstream_filters
2882 aac_adtstoasc_bsf_select="adts_header"
2883 h264_metadata_bsf_select="cbs_h264"
2884 h264_redundant_pps_bsf_select="cbs_h264"
2885 hevc_metadata_bsf_select="cbs_h265"
2886 mjpeg2jpeg_bsf_select="jpegtables"
2887 mpeg2_metadata_bsf_select="cbs_mpeg2"
2888 trace_headers_bsf_select="cbs_h264 cbs_h265 cbs_mpeg2"
2889
2890 # external libraries
2891 aac_at_decoder_deps="audiotoolbox"
2892 ac3_at_decoder_deps="audiotoolbox"
2893 ac3_at_decoder_select="ac3_parser"
2894 adpcm_ima_qt_at_decoder_deps="audiotoolbox"
2895 alac_at_decoder_deps="audiotoolbox"
2896 amr_nb_at_decoder_deps="audiotoolbox"
2897 avisynth_deps_any="libdl LoadLibrary"
2898 avisynth_demuxer_deps="avisynth"
2899 avisynth_demuxer_select="riffdec"
2900 eac3_at_decoder_deps="audiotoolbox"
2901 eac3_at_decoder_select="ac3_parser"
2902 gsm_ms_at_decoder_deps="audiotoolbox"
2903 ilbc_at_decoder_deps="audiotoolbox"
2904 mp1_at_decoder_deps="audiotoolbox"
2905 mp2_at_decoder_deps="audiotoolbox"
2906 mp3_at_decoder_deps="audiotoolbox"
2907 mp1_at_decoder_select="mpegaudioheader"
2908 mp2_at_decoder_select="mpegaudioheader"
2909 mp3_at_decoder_select="mpegaudioheader"
2910 pcm_alaw_at_decoder_deps="audiotoolbox"
2911 pcm_mulaw_at_decoder_deps="audiotoolbox"
2912 qdmc_at_decoder_deps="audiotoolbox"
2913 qdm2_at_decoder_deps="audiotoolbox"
2914 aac_at_encoder_deps="audiotoolbox"
2915 aac_at_encoder_select="audio_frame_queue"
2916 alac_at_encoder_deps="audiotoolbox"
2917 alac_at_encoder_select="audio_frame_queue"
2918 ilbc_at_encoder_deps="audiotoolbox"
2919 ilbc_at_encoder_select="audio_frame_queue"
2920 pcm_alaw_at_encoder_deps="audiotoolbox"
2921 pcm_alaw_at_encoder_select="audio_frame_queue"
2922 pcm_mulaw_at_encoder_deps="audiotoolbox"
2923 pcm_mulaw_at_encoder_select="audio_frame_queue"
2924 chromaprint_muxer_deps="chromaprint"
2925 h264_videotoolbox_encoder_deps="pthreads"
2926 h264_videotoolbox_encoder_select="videotoolbox_encoder"
2927 libcelt_decoder_deps="libcelt"
2928 libfdk_aac_decoder_deps="libfdk_aac"
2929 libfdk_aac_encoder_deps="libfdk_aac"
2930 libfdk_aac_encoder_select="audio_frame_queue"
2931 libgme_demuxer_deps="libgme"
2932 libgsm_decoder_deps="libgsm"
2933 libgsm_encoder_deps="libgsm"
2934 libgsm_ms_decoder_deps="libgsm"
2935 libgsm_ms_encoder_deps="libgsm"
2936 libilbc_decoder_deps="libilbc"
2937 libilbc_encoder_deps="libilbc"
2938 libkvazaar_encoder_deps="libkvazaar"
2939 libmodplug_demuxer_deps="libmodplug"
2940 libmp3lame_encoder_deps="libmp3lame"
2941 libmp3lame_encoder_select="audio_frame_queue mpegaudioheader"
2942 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2943 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2944 libopencore_amrnb_encoder_select="audio_frame_queue"
2945 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2946 libopenh264_decoder_deps="libopenh264"
2947 libopenh264_decoder_select="h264_mp4toannexb_bsf"
2948 libopenh264_encoder_deps="libopenh264"
2949 libopenjpeg_decoder_deps="libopenjpeg"
2950 libopenjpeg_encoder_deps="libopenjpeg"
2951 libopenmpt_demuxer_deps="libopenmpt"
2952 libopus_decoder_deps="libopus"
2953 libopus_encoder_deps="libopus"
2954 libopus_encoder_select="audio_frame_queue"
2955 librsvg_decoder_deps="librsvg"
2956 libshine_encoder_deps="libshine"
2957 libshine_encoder_select="audio_frame_queue"
2958 libspeex_decoder_deps="libspeex"
2959 libspeex_encoder_deps="libspeex"
2960 libspeex_encoder_select="audio_frame_queue"
2961 libtheora_encoder_deps="libtheora"
2962 libtwolame_encoder_deps="libtwolame"
2963 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2964 libvorbis_decoder_deps="libvorbis"
2965 libvorbis_encoder_deps="libvorbis libvorbisenc"
2966 libvorbis_encoder_select="audio_frame_queue"
2967 libvpx_vp8_decoder_deps="libvpx"
2968 libvpx_vp8_encoder_deps="libvpx"
2969 libvpx_vp9_decoder_deps="libvpx"
2970 libvpx_vp9_encoder_deps="libvpx"
2971 libwavpack_encoder_deps="libwavpack"
2972 libwavpack_encoder_select="audio_frame_queue"
2973 libwebp_encoder_deps="libwebp"
2974 libwebp_anim_encoder_deps="libwebp"
2975 libx262_encoder_deps="libx262"
2976 libx264_encoder_deps="libx264"
2977 libx264rgb_encoder_deps="libx264 x264_csp_bgr"
2978 libx264rgb_encoder_select="libx264_encoder"
2979 libx265_encoder_deps="libx265"
2980 libxavs_encoder_deps="libxavs"
2981 libxvid_encoder_deps="libxvid"
2982 libzvbi_teletext_decoder_deps="libzvbi"
2983 videotoolbox_suggest="coreservices"
2984 videotoolbox_deps="corefoundation coremedia corevideo"
2985 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
2986
2987 # demuxers / muxers
2988 ac3_demuxer_select="ac3_parser"
2989 aiff_muxer_select="iso_media"
2990 asf_demuxer_select="riffdec"
2991 asf_o_demuxer_select="riffdec"
2992 asf_muxer_select="riffenc"
2993 asf_stream_muxer_select="asf_muxer"
2994 avi_demuxer_select="iso_media riffdec exif"
2995 avi_muxer_select="riffenc"
2996 caf_demuxer_select="iso_media riffdec"
2997 caf_muxer_select="iso_media"
2998 dash_muxer_select="mp4_muxer"
2999 dash_demuxer_deps="libxml2"
3000 dirac_demuxer_select="dirac_parser"
3001 dts_demuxer_select="dca_parser"
3002 dtshd_demuxer_select="dca_parser"
3003 dv_demuxer_select="dvprofile"
3004 dv_muxer_select="dvprofile"
3005 dxa_demuxer_select="riffdec"
3006 eac3_demuxer_select="ac3_parser"
3007 f4v_muxer_select="mov_muxer"
3008 fifo_muxer_deps="threads"
3009 flac_demuxer_select="flac_parser"
3010 hds_muxer_select="flv_muxer"
3011 hls_muxer_select="mpegts_muxer"
3012 hls_muxer_suggest="gcrypt openssl"
3013 image2_alias_pix_demuxer_select="image2_demuxer"
3014 image2_brender_pix_demuxer_select="image2_demuxer"
3015 ipod_muxer_select="mov_muxer"
3016 ismv_muxer_select="mov_muxer"
3017 matroska_audio_muxer_select="matroska_muxer"
3018 matroska_demuxer_select="iso_media riffdec"
3019 matroska_demuxer_suggest="bzlib lzo zlib"
3020 matroska_muxer_select="iso_media riffenc"
3021 mmf_muxer_select="riffenc"
3022 mov_demuxer_select="iso_media riffdec"
3023 mov_demuxer_suggest="zlib"
3024 mov_muxer_select="iso_media riffenc rtpenc_chain"
3025 mp3_demuxer_select="mpegaudio_parser"
3026 mp3_muxer_select="mpegaudioheader"
3027 mp4_muxer_select="mov_muxer"
3028 mpegts_demuxer_select="iso_media"
3029 mpegts_muxer_select="adts_muxer latm_muxer"
3030 mpegtsraw_demuxer_select="mpegts_demuxer"
3031 mxf_d10_muxer_select="mxf_muxer"
3032 mxf_opatom_muxer_select="mxf_muxer"
3033 nut_muxer_select="riffenc"
3034 nuv_demuxer_select="riffdec"
3035 oga_muxer_select="ogg_muxer"
3036 ogg_demuxer_select="dirac_parse"
3037 ogv_muxer_select="ogg_muxer"
3038 opus_muxer_select="ogg_muxer"
3039 psp_muxer_select="mov_muxer"
3040 rtp_demuxer_select="sdp_demuxer"
3041 rtp_muxer_select="golomb"
3042 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
3043 rtsp_demuxer_select="http_protocol rtpdec"
3044 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
3045 sap_demuxer_select="sdp_demuxer"
3046 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
3047 sdp_demuxer_select="rtpdec"
3048 smoothstreaming_muxer_select="ismv_muxer"
3049 spdif_demuxer_select="adts_header"
3050 spdif_muxer_select="adts_header"
3051 spx_muxer_select="ogg_muxer"
3052 swf_demuxer_suggest="zlib"
3053 tak_demuxer_select="tak_parser"
3054 tg2_muxer_select="mov_muxer"
3055 tgp_muxer_select="mov_muxer"
3056 vobsub_demuxer_select="mpegps_demuxer"
3057 w64_demuxer_select="wav_demuxer"
3058 w64_muxer_select="wav_muxer"
3059 wav_demuxer_select="riffdec"
3060 wav_muxer_select="riffenc"
3061 webm_muxer_select="iso_media riffenc"
3062 webm_dash_manifest_demuxer_select="matroska_demuxer"
3063 wtv_demuxer_select="mpegts_demuxer riffdec"
3064 wtv_muxer_select="mpegts_muxer riffenc"
3065 xmv_demuxer_select="riffdec"
3066 xwma_demuxer_select="riffdec"
3067
3068 # indevs / outdevs
3069 alsa_indev_deps="alsa"
3070 alsa_outdev_deps="alsa"
3071 avfoundation_indev_deps="avfoundation corevideo coremedia pthreads"
3072 avfoundation_indev_suggest="coregraphics applicationservices"
3073 avfoundation_indev_extralibs="-framework Foundation"
3074 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
3075 caca_outdev_deps="libcaca"
3076 decklink_deps_any="libdl LoadLibrary"
3077 decklink_indev_deps="decklink threads"
3078 decklink_indev_extralibs="-lstdc++"
3079 decklink_outdev_deps="decklink threads"
3080 decklink_outdev_extralibs="-lstdc++"
3081 libndi_newtek_indev_deps="libndi_newtek"
3082 libndi_newtek_indev_extralibs="-lndi"
3083 libndi_newtek_outdev_deps="libndi_newtek"
3084 libndi_newtek_outdev_extralibs="-lndi"
3085 dshow_indev_deps="IBaseFilter"
3086 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
3087 fbdev_indev_deps="linux_fb_h"
3088 fbdev_outdev_deps="linux_fb_h"
3089 gdigrab_indev_deps="CreateDIBSection"
3090 gdigrab_indev_extralibs="-lgdi32"
3091 gdigrab_indev_select="bmp_decoder"
3092 iec61883_indev_deps="libiec61883"
3093 jack_indev_deps="libjack"
3094 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
3095 kmsgrab_indev_deps="libdrm"
3096 lavfi_indev_deps="avfilter"
3097 libcdio_indev_deps="libcdio"
3098 libdc1394_indev_deps="libdc1394"
3099 openal_indev_deps="openal"
3100 opengl_outdev_deps="opengl"
3101 oss_indev_deps_any="soundcard_h sys_soundcard_h"
3102 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
3103 pulse_indev_deps="libpulse"
3104 pulse_outdev_deps="libpulse"
3105 sdl2_outdev_deps="sdl2"
3106 sndio_indev_deps="sndio"
3107 sndio_outdev_deps="sndio"
3108 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
3109 v4l2_indev_suggest="libv4l2"
3110 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
3111 v4l2_outdev_suggest="libv4l2"
3112 vfwcap_indev_deps="vfw32 vfwcap_defines"
3113 xcbgrab_indev_deps="libxcb"
3114 xcbgrab_indev_suggest="libxcb_shm libxcb_shape libxcb_xfixes"
3115 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
3116 xv_outdev_extralibs="-lXv -lX11 -lXext"
3117
3118 # protocols
3119 async_protocol_deps="threads"
3120 bluray_protocol_deps="libbluray"
3121 ffrtmpcrypt_protocol_conflict="librtmp_protocol"
3122 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
3123 ffrtmpcrypt_protocol_select="tcp_protocol"
3124 ffrtmphttp_protocol_conflict="librtmp_protocol"
3125 ffrtmphttp_protocol_select="http_protocol"
3126 ftp_protocol_select="tcp_protocol"
3127 gopher_protocol_select="network"
3128 http_protocol_select="tcp_protocol"
3129 http_protocol_suggest="zlib"
3130 httpproxy_protocol_select="tcp_protocol"
3131 httpproxy_protocol_suggest="zlib"
3132 https_protocol_select="tls_protocol"
3133 https_protocol_suggest="zlib"
3134 icecast_protocol_select="http_protocol"
3135 librtmp_protocol_deps="librtmp"
3136 librtmpe_protocol_deps="librtmp"
3137 librtmps_protocol_deps="librtmp"
3138 librtmpt_protocol_deps="librtmp"
3139 librtmpte_protocol_deps="librtmp"
3140 libsmbclient_protocol_deps="libsmbclient gplv3"
3141 libssh_protocol_deps="libssh"
3142 mmsh_protocol_select="http_protocol"
3143 mmst_protocol_select="network"
3144 rtmp_protocol_conflict="librtmp_protocol"
3145 rtmp_protocol_select="tcp_protocol"
3146 rtmp_protocol_suggest="zlib"
3147 rtmpe_protocol_select="ffrtmpcrypt_protocol"
3148 rtmpe_protocol_suggest="zlib"
3149 rtmps_protocol_conflict="librtmp_protocol"
3150 rtmps_protocol_select="tls_protocol"
3151 rtmps_protocol_suggest="zlib"
3152 rtmpt_protocol_select="ffrtmphttp_protocol"
3153 rtmpt_protocol_suggest="zlib"
3154 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
3155 rtmpte_protocol_suggest="zlib"
3156 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
3157 rtmpts_protocol_suggest="zlib"
3158 rtp_protocol_select="udp_protocol"
3159 schannel_conflict="openssl gnutls"
3160 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
3161 sctp_protocol_select="network"
3162 securetransport_conflict="openssl gnutls"
3163 srtp_protocol_select="rtp_protocol srtp"
3164 tcp_protocol_select="network"
3165 tls_protocol_deps_any="gnutls openssl schannel securetransport"
3166 tls_protocol_select="tcp_protocol"
3167 udp_protocol_select="network"
3168 udplite_protocol_select="network"
3169 unix_protocol_deps="sys_un_h"
3170 unix_protocol_select="network"
3171
3172 # filters
3173 afftfilt_filter_deps="avcodec"
3174 afftfilt_filter_select="fft"
3175 afir_filter_deps="avcodec"
3176 afir_filter_select="fft"
3177 amovie_filter_deps="avcodec avformat"
3178 aresample_filter_deps="swresample"
3179 ass_filter_deps="libass"
3180 atempo_filter_deps="avcodec"
3181 atempo_filter_select="rdft"
3182 azmq_filter_deps="libzmq"
3183 blackframe_filter_deps="gpl"
3184 boxblur_filter_deps="gpl"
3185 bs2b_filter_deps="libbs2b"
3186 colormatrix_filter_deps="gpl"
3187 coreimage_filter_deps="coreimage appkit"
3188 coreimage_filter_extralibs="-framework OpenGL"
3189 coreimagesrc_filter_deps="coreimage appkit"
3190 coreimagesrc_filter_extralibs="-framework OpenGL"
3191 cover_rect_filter_deps="avcodec avformat gpl"
3192 cropdetect_filter_deps="gpl"
3193 deinterlace_qsv_filter_deps="libmfx"
3194 deinterlace_vaapi_filter_deps="vaapi"
3195 delogo_filter_deps="gpl"
3196 deshake_filter_select="pixelutils"
3197 deshake_filter_suggest="opencl"
3198 drawtext_filter_deps="libfreetype"
3199 drawtext_filter_suggest="libfontconfig libfribidi"
3200 elbg_filter_deps="avcodec"
3201 eq_filter_deps="gpl"
3202 fftfilt_filter_deps="avcodec"
3203 fftfilt_filter_select="rdft"
3204 find_rect_filter_deps="avcodec avformat gpl"
3205 firequalizer_filter_deps="avcodec"
3206 firequalizer_filter_select="rdft"
3207 flite_filter_deps="libflite"
3208 framerate_filter_select="pixelutils"
3209 frei0r_filter_deps="frei0r libdl"
3210 frei0r_src_filter_deps="frei0r libdl"
3211 fspp_filter_deps="gpl"
3212 geq_filter_deps="gpl"
3213 histeq_filter_deps="gpl"
3214 hqdn3d_filter_deps="gpl"
3215 interlace_filter_deps="gpl"
3216 kerndeint_filter_deps="gpl"
3217 ladspa_filter_deps="ladspa libdl"
3218 mcdeint_filter_deps="avcodec gpl"
3219 movie_filter_deps="avcodec avformat"
3220 mpdecimate_filter_deps="gpl"
3221 mpdecimate_filter_select="pixelutils"
3222 mptestsrc_filter_deps="gpl"
3223 negate_filter_deps="lut_filter"
3224 nnedi_filter_deps="gpl"
3225 ocr_filter_deps="libtesseract"
3226 ocv_filter_deps="libopencv"
3227 overlay_qsv_filter_deps="libmfx"
3228 overlay_qsv_filter_select="qsvvpp"
3229 owdenoise_filter_deps="gpl"
3230 pan_filter_deps="swresample"
3231 perspective_filter_deps="gpl"
3232 phase_filter_deps="gpl"
3233 pp7_filter_deps="gpl"
3234 pp_filter_deps="gpl postproc"
3235 pullup_filter_deps="gpl"
3236 removelogo_filter_deps="avcodec avformat swscale"
3237 repeatfields_filter_deps="gpl"
3238 resample_filter_deps="avresample"
3239 rubberband_filter_deps="librubberband"
3240 sab_filter_deps="gpl swscale"
3241 scale2ref_filter_deps="swscale"
3242 scale_filter_deps="swscale"
3243 scale_qsv_filter_deps="libmfx"
3244 select_filter_select="pixelutils"
3245 showcqt_filter_deps="avcodec avformat swscale"
3246 showcqt_filter_suggest="libfontconfig libfreetype"
3247 showcqt_filter_select="fft"
3248 showfreqs_filter_deps="avcodec"
3249 showfreqs_filter_select="fft"
3250 showspectrum_filter_deps="avcodec"
3251 showspectrum_filter_select="fft"
3252 showspectrumpic_filter_deps="avcodec"
3253 showspectrumpic_filter_select="fft"
3254 signature_filter_deps="gpl avcodec avformat"
3255 smartblur_filter_deps="gpl swscale"
3256 sofalizer_filter_deps="libmysofa avcodec"
3257 sofalizer_filter_select="fft"
3258 spectrumsynth_filter_deps="avcodec"
3259 spectrumsynth_filter_select="fft"
3260 spp_filter_deps="gpl avcodec"
3261 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3262 stereo3d_filter_deps="gpl"
3263 subtitles_filter_deps="avformat avcodec libass"
3264 super2xsai_filter_deps="gpl"
3265 pixfmts_super2xsai_test_deps="super2xsai_filter"
3266 tinterlace_filter_deps="gpl"
3267 tinterlace_merge_test_deps="tinterlace_filter"
3268 tinterlace_pad_test_deps="tinterlace_filter"
3269 tonemap_filter_deps="const_nan"
3270 uspp_filter_deps="gpl avcodec"
3271 unsharp_filter_suggest="opencl"
3272 vaguedenoiser_filter_deps="gpl"
3273 vidstabdetect_filter_deps="libvidstab"
3274 vidstabtransform_filter_deps="libvidstab"
3275 libvmaf_filter_deps="libvmaf"
3276 zmq_filter_deps="libzmq"
3277 zoompan_filter_deps="swscale"
3278 zscale_filter_deps="libzimg const_nan"
3279 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3280 vpp_qsv_filter_deps="libmfx"
3281 vpp_qsv_filter_select="qsvvpp"
3282
3283 # examples
3284 avio_dir_cmd_deps="avformat avutil"
3285 avio_reading_deps="avformat avcodec avutil"
3286 decode_audio_example_deps="avcodec avutil"
3287 decode_video_example_deps="avcodec avutil"
3288 demuxing_decoding_example_deps="avcodec avformat avutil"
3289 encode_audio_example_deps="avcodec avutil"
3290 encode_video_example_deps="avcodec avutil"
3291 extract_mvs_example_deps="avcodec avformat avutil"
3292 filter_audio_example_deps="avfilter avutil"
3293 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3294 filtering_video_example_deps="avfilter avcodec avformat avutil"
3295 http_multiclient_example_deps="avformat avutil fork"
3296 hw_decode_example_deps="avcodec avformat avutil"
3297 metadata_example_deps="avformat avutil"
3298 muxing_example_deps="avcodec avformat avutil swscale"
3299 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
3300 remuxing_example_deps="avcodec avformat avutil"
3301 resampling_audio_example_deps="avutil swresample"
3302 scaling_video_example_deps="avutil swscale"
3303 transcode_aac_example_deps="avcodec avformat swresample"
3304 transcoding_example_deps="avfilter avcodec avformat avutil"
3305
3306 # EXTRALIBS_LIST
3307 cpu_init_extralibs="pthreads_extralibs"
3308 cws2fws_extralibs="zlib_extralibs"
3309
3310 # libraries, in linking order
3311 avcodec_deps="avutil"
3312 avcodec_suggest="libm"
3313 avcodec_select="null_bsf"
3314 avdevice_deps="avformat avcodec avutil"
3315 avdevice_suggest="libm"
3316 avfilter_deps="avutil"
3317 avfilter_suggest="libm"
3318 avformat_deps="avcodec avutil"
3319 avformat_suggest="libm network zlib"
3320 avresample_deps="avutil"
3321 avresample_suggest="libm"
3322 avutil_suggest="clock_gettime cuda libm libdrm libmfx opencl user32 vaapi videotoolbox corefoundation corevideo coremedia wincrypt"
3323 postproc_deps="avutil gpl"
3324 postproc_suggest="libm"
3325 swresample_deps="avutil"
3326 swresample_suggest="libm libsoxr"
3327 swscale_deps="avutil"
3328 swscale_suggest="libm"
3329
3330 avcodec_extralibs="pthreads_extralibs iconv_extralibs"
3331 avfilter_extralibs="pthreads_extralibs"
3332 avutil_extralibs="d3d11va_extralibs nanosleep_extralibs pthreads_extralibs vaapi_drm_extralibs vaapi_x11_extralibs vdpau_x11_extralibs"
3333
3334 # programs
3335 ffmpeg_deps="avcodec avfilter avformat swresample"
3336 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3337                null_filter
3338                trim_filter"
3339 ffmpeg_suggest="ole32 psapi shell32"
3340 ffplay_deps="avcodec avformat swscale swresample sdl2"
3341 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3342 ffplay_suggest="shell32"
3343 ffprobe_deps="avcodec avformat"
3344 ffprobe_suggest="shell32"
3345 ffserver_deps="avformat fork sarestart"
3346 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
3347
3348 # documentation
3349 podpages_deps="perl"
3350 manpages_deps="perl pod2man"
3351 htmlpages_deps="perl"
3352 htmlpages_deps_any="makeinfo_html texi2html"
3353 txtpages_deps="perl makeinfo"
3354 doc_deps_any="manpages htmlpages podpages txtpages"
3355
3356 # default parameters
3357
3358 logfile="ffbuild/config.log"
3359
3360 # installation paths
3361 prefix_default="/usr/local"
3362 bindir_default='${prefix}/bin'
3363 datadir_default='${prefix}/share/ffmpeg'
3364 docdir_default='${prefix}/share/doc/ffmpeg'
3365 incdir_default='${prefix}/include'
3366 libdir_default='${prefix}/lib'
3367 mandir_default='${prefix}/share/man'
3368
3369 # toolchain
3370 ar_default="ar"
3371 cc_default="gcc"
3372 cxx_default="g++"
3373 host_cc_default="gcc"
3374 doxygen_default="doxygen"
3375 install="install"
3376 ln_s_default="ln -s -f"
3377 nm_default="nm -g"
3378 pkg_config_default=pkg-config
3379 ranlib_default="ranlib"
3380 strip_default="strip"
3381 version_script='--version-script'
3382 x86asmexe_default="nasm"
3383 windres_default="windres"
3384 nvcc_default="nvcc"
3385 nvccflags_default="-gencode arch=compute_30,code=sm_30 -O2"
3386 striptype="direct"
3387
3388 # OS
3389 target_os_default=$(tolower $(uname -s))
3390 host_os=$target_os_default
3391
3392 # machine
3393 if test "$target_os_default" = aix; then
3394     arch_default=$(uname -p)
3395     strip_default="strip -X32_64"
3396 else
3397     arch_default=$(uname -m)
3398 fi
3399 cpu="generic"
3400 intrinsics="none"
3401
3402 # configurable options
3403 enable $PROGRAM_LIST
3404 enable $DOCUMENT_LIST
3405 enable $EXAMPLE_LIST
3406 enable $(filter_out avresample $LIBRARY_LIST)
3407 enable stripping
3408
3409 enable asm
3410 enable debug
3411 enable doc
3412 enable faan faandct faanidct
3413 enable optimizations
3414 enable runtime_cpudetect
3415 enable safe_bitstream_reader
3416 enable static
3417 enable swscale_alpha
3418 enable valgrind_backtrace
3419
3420 sws_max_filter_size_default=256
3421 set_default sws_max_filter_size
3422
3423 # internal components are enabled by default
3424 enable $EXTRALIBS_LIST
3425
3426 # Avoid external, non-system, libraries getting enabled by dependency resolution
3427 disable $EXTERNAL_LIBRARY_LIST $HWACCEL_LIBRARY_LIST
3428
3429 # build settings
3430 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3431 LIBPREF="lib"
3432 LIBSUF=".a"
3433 FULLNAME='$(NAME)$(BUILDSUF)'
3434 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3435 SLIBPREF="lib"
3436 SLIBSUF=".so"
3437 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3438 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3439 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3440 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3441 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3442 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3443 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
3444
3445 asflags_filter=echo
3446 cflags_filter=echo
3447 ldflags_filter=echo
3448
3449 AS_C='-c'
3450 AS_O='-o $@'
3451 CC_C='-c'
3452 CC_E='-E -o $@'
3453 CC_O='-o $@'
3454 CXX_C='-c'
3455 CXX_O='-o $@'
3456 OBJCC_C='-c'
3457 OBJCC_E='-E -o $@'
3458 OBJCC_O='-o $@'
3459 X86ASM_O='-o $@'
3460 LD_O='-o $@'
3461 LD_LIB='-l%'
3462 LD_PATH='-L'
3463 HOSTCC_C='-c'
3464 HOSTCC_E='-E -o $@'
3465 HOSTCC_O='-o $@'
3466 HOSTLD_O='-o $@'
3467 NVCC_C='-c'
3468 NVCC_O='-o $@'
3469
3470 host_extralibs='-lm'
3471 host_cflags_filter=echo
3472 host_ldflags_filter=echo
3473
3474 target_path='$(CURDIR)'
3475
3476 # since the object filename is not given with the -MM flag, the compiler
3477 # is only able to print the basename, and we must add the path ourselves
3478 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3479 DEPFLAGS='-MM'
3480
3481 mkdir -p ffbuild
3482
3483 # find source path
3484 if test -f configure; then
3485     source_path=.
3486 else
3487     source_path=$(cd $(dirname "$0"); pwd)
3488     case "$source_path" in
3489         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3490     esac
3491     test -e "$source_path/config.h" &&
3492         die "Out of tree builds are impossible with config.h in source dir."
3493 fi
3494
3495 for v in "$@"; do
3496     r=${v#*=}
3497     l=${v%"$r"}
3498     r=$(sh_quote "$r")
3499     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3500 done
3501
3502 find_things(){
3503     thing=$1
3504     pattern=$2
3505     file=$source_path/$3
3506     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
3507 }
3508
3509 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
3510 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
3511 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
3512 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
3513 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
3514 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
3515 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
3516 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
3517 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
3518
3519 find_things_extern(){
3520     thing=$1
3521     pattern=$2
3522     file=$source_path/$3
3523     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
3524 }
3525
3526 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3527 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3528
3529 AVCODEC_COMPONENTS_LIST="
3530     $BSF_LIST
3531     $DECODER_LIST
3532     $ENCODER_LIST
3533     $HWACCEL_LIST
3534     $PARSER_LIST
3535 "
3536
3537 AVDEVICE_COMPONENTS_LIST="
3538     $INDEV_LIST
3539     $OUTDEV_LIST
3540 "
3541
3542 AVFILTER_COMPONENTS_LIST="
3543     $FILTER_LIST
3544 "
3545
3546 AVFORMAT_COMPONENTS_LIST="
3547     $DEMUXER_LIST
3548     $MUXER_LIST
3549     $PROTOCOL_LIST
3550 "
3551
3552 ALL_COMPONENTS="
3553     $AVCODEC_COMPONENTS_LIST
3554     $AVDEVICE_COMPONENTS_LIST
3555     $AVFILTER_COMPONENTS_LIST
3556     $AVFORMAT_COMPONENTS_LIST
3557 "
3558
3559 for n in $COMPONENT_LIST; do
3560     v=$(toupper ${n%s})_LIST
3561     eval enable \$$v
3562     eval ${n}_if_any="\$$v"
3563 done
3564
3565 enable $ARCH_EXT_LIST
3566
3567 die_unknown(){
3568     echo "Unknown option \"$1\"."
3569     echo "See $0 --help for available options."
3570     exit 1
3571 }
3572
3573 print_in_columns() {
3574     cols=$(expr $ncols / 24)
3575     cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
3576 }
3577
3578 show_list() {
3579     suffix=_$1
3580     shift
3581     echo $* | sed s/$suffix//g | print_in_columns
3582     exit 0
3583 }
3584
3585 rand_list(){
3586     IFS=', '
3587     set -- $*
3588     unset IFS
3589     for thing; do
3590         comp=${thing%:*}
3591         prob=${thing#$comp}
3592         prob=${prob#:}
3593         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3594         echo "prob ${prob:-0.5}"
3595         printf '%s\n' $comp
3596     done
3597 }
3598
3599 do_random(){
3600     action=$1
3601     shift
3602     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3603     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3604 }
3605
3606 for opt do
3607     optval="${opt#*=}"
3608     case "$opt" in
3609         --extra-ldflags=*)
3610             add_ldflags $optval
3611         ;;
3612         --extra-ldexeflags=*)
3613             add_ldexeflags $optval
3614         ;;
3615         --extra-ldsoflags=*)
3616             add_ldsoflags $optval
3617         ;;
3618         --extra-ldlibflags=*)
3619             warn "The --extra-ldlibflags option is only provided for compatibility and will be\n"\
3620                  "removed in the future. Use --extra-ldsoflags instead."
3621             add_ldsoflags $optval
3622         ;;
3623         --extra-libs=*)
3624             add_extralibs $optval
3625         ;;
3626         --disable-devices)
3627             disable $INDEV_LIST $OUTDEV_LIST
3628         ;;
3629         --enable-debug=*)
3630             debuglevel="$optval"
3631         ;;
3632         --disable-programs)
3633             disable $PROGRAM_LIST
3634         ;;
3635         --disable-everything)
3636             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3637         ;;
3638         --disable-all)
3639             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3640             disable $LIBRARY_LIST $PROGRAM_LIST doc
3641             enable avutil
3642         ;;
3643         --enable-random|--disable-random)
3644             action=${opt%%-random}
3645             do_random ${action#--} $COMPONENT_LIST
3646         ;;
3647         --enable-random=*|--disable-random=*)
3648             action=${opt%%-random=*}
3649             do_random ${action#--} $optval
3650         ;;
3651         --enable-sdl)
3652             enable sdl2
3653         ;;
3654         --enable-*=*|--disable-*=*)
3655             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3656             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3657             eval list=\$$(toupper $thing)_LIST
3658             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3659             list=$(filter "$name" $list)
3660             [ "$list" = "" ] && warn "Option $opt did not match anything"
3661             $action $list
3662         ;;
3663         --enable-yasm|--disable-yasm)
3664             warn "The ${opt} option is only provided for compatibility and will be\n"\
3665                  "removed in the future. Use --enable-x86asm / --disable-x86asm instead."
3666             test $opt = --enable-yasm && x86asm=yes || x86asm=no
3667         ;;
3668         --yasmexe=*)
3669             warn "The --yasmexe option is only provided for compatibility and will be\n"\
3670                  "removed in the future. Use --x86asmexe instead."
3671             x86asmexe="$optval"
3672         ;;
3673         --enable-?*|--disable-?*)
3674             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3675             if is_in $option $COMPONENT_LIST; then
3676                 test $action = disable && action=unset
3677                 eval $action \$$(toupper ${option%s})_LIST
3678             elif is_in $option $CMDLINE_SELECT; then
3679                 $action $option
3680             else
3681                 die_unknown $opt
3682             fi
3683         ;;
3684         --list-*)
3685             NAME="${opt#--list-}"
3686             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3687             NAME=${NAME%s}
3688             eval show_list $NAME \$$(toupper $NAME)_LIST
3689         ;;
3690         --help|-h) show_help
3691         ;;
3692         --quiet|-q) quiet=yes
3693         ;;
3694         --fatal-warnings) enable fatal_warnings
3695         ;;
3696         --libfuzzer=*)
3697             libfuzzer_path="$optval"
3698         ;;
3699         *)
3700             optname="${opt%%=*}"
3701             optname="${optname#--}"
3702             optname=$(echo "$optname" | sed 's/-/_/g')
3703             if is_in $optname $CMDLINE_SET; then
3704                 eval $optname='$optval'
3705             elif is_in $optname $CMDLINE_APPEND; then
3706                 append $optname "$optval"
3707             else
3708                 die_unknown $opt
3709             fi
3710         ;;
3711     esac
3712 done
3713
3714 for e in $env; do
3715     eval "export $e"
3716 done
3717
3718 if disabled autodetect; then
3719
3720     # Unless iconv is explicitely disabled by the user, we still want to probe
3721     # for the iconv from the libc.
3722     disabled iconv || enable libc_iconv
3723
3724     disable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3725     disable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3726 fi
3727 # Mark specifically enabled, but normally autodetected libraries as requested.
3728 for lib in $AUTODETECT_LIBS; do
3729     enabled $lib && request $lib
3730 done
3731 #TODO: switch to $AUTODETECT_LIBS when $THREADS_LIST is supported the same way
3732 enable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3733 enable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3734
3735 disabled logging && logfile=/dev/null
3736
3737 die_license_disabled() {
3738     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
3739 }
3740
3741 die_license_disabled_gpl() {
3742     enabled $1 || { enabled $v && die "$v is incompatible with the gpl and --enable-$1 is not specified."; }
3743 }
3744
3745 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3746 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3747
3748 enabled gpl && map "die_license_disabled_gpl nonfree" $EXTERNAL_LIBRARY_NONFREE_LIST
3749 map "die_license_disabled nonfree" $HWACCEL_LIBRARY_NONFREE_LIST
3750
3751 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3752
3753 enabled_all gnutls openssl &&
3754     die "GnuTLS and OpenSSL must not be enabled at the same time."
3755
3756 # Disable all the library-specific components if the library itself
3757 # is disabled, see AVCODEC_LIST and following _LIST variables.
3758
3759 disable_components(){
3760     disabled ${1} && disable $(
3761         eval components="\$$(toupper ${1})_COMPONENTS"
3762         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
3763     )
3764 }
3765
3766 map 'disable_components $v' $LIBRARY_LIST
3767
3768 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
3769 set >> $logfile
3770
3771 test -n "$valgrind" && toolchain="valgrind-memcheck"
3772
3773 enabled ossfuzz && {
3774     add_cflags  -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp -fno-omit-frame-pointer
3775     add_ldflags -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp
3776 }
3777
3778 case "$toolchain" in
3779     *-asan)
3780         cc_default="${toolchain%-asan}"
3781         add_cflags  -fsanitize=address
3782         add_ldflags -fsanitize=address
3783     ;;
3784     *-msan)
3785         cc_default="${toolchain%-msan}"
3786         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
3787         add_ldflags -fsanitize=memory
3788     ;;
3789     *-tsan)
3790         cc_default="${toolchain%-tsan}"
3791         add_cflags  -fsanitize=thread -fPIE
3792         add_ldflags -fsanitize=thread -pie
3793         case "$toolchain" in
3794             gcc-tsan)
3795                 add_cflags  -fPIC
3796                 add_ldflags -fPIC
3797                 ;;
3798         esac
3799     ;;
3800     *-usan)
3801         cc_default="${toolchain%-usan}"
3802         add_cflags  -fsanitize=undefined
3803         add_ldflags -fsanitize=undefined
3804     ;;
3805     valgrind-*)
3806         target_exec_default="valgrind"
3807         case "$toolchain" in
3808             valgrind-massif)
3809                 target_exec_args="--tool=massif --alloc-fn=av_malloc --alloc-fn=av_mallocz --alloc-fn=av_calloc --alloc-fn=av_fast_padded_malloc --alloc-fn=av_fast_malloc --alloc-fn=av_realloc_f --alloc-fn=av_fast_realloc --alloc-fn=av_realloc"
3810                 ;;
3811             valgrind-memcheck)
3812                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3813                 ;;
3814         esac
3815     ;;
3816     msvc)
3817         # Check whether the current MSVC version needs the C99 converter.
3818         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3819         # support enough of C99 to build ffmpeg. Default to the new
3820         # behaviour if the regexp was unable to match anything, since this
3821         # successfully parses the version number of existing supported
3822         # versions that require the converter (MSVC 2010 and 2012).
3823         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3824         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3825             cc_default="cl"
3826             cxx_default="cl"
3827         else
3828             cc_default="c99wrap cl"
3829             cxx_default="c99wrap cl"
3830         fi
3831         ld_default="$source_path/compat/windows/mslink"
3832         nm_default="dumpbin -symbols"
3833         ar_default="lib"
3834         case "$arch" in
3835         arm*)
3836             as_default="armasm"
3837             ;;
3838         esac
3839         target_os_default="win32"
3840         # Use a relative path for TMPDIR. This makes sure all the
3841         # ffconf temp files are written with a relative path, avoiding
3842         # issues with msys/win32 path conversion for MSVC parameters
3843         # such as -Fo<file> or -out:<file>.
3844         TMPDIR=.
3845     ;;
3846     icl)
3847         cc_default="icl"
3848         ld_default="xilink"
3849         nm_default="dumpbin -symbols"
3850         ar_default="xilib"
3851         target_os_default="win32"
3852         TMPDIR=.
3853     ;;
3854     gcov)
3855         add_cflags  -fprofile-arcs -ftest-coverage
3856         add_ldflags -fprofile-arcs -ftest-coverage
3857     ;;
3858     llvm-cov)
3859         add_cflags -fprofile-arcs -ftest-coverage
3860         add_ldflags --coverage
3861     ;;
3862     hardened)
3863         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3864         add_cflags   -fno-strict-overflow -fstack-protector-all
3865         add_ldflags  -Wl,-z,relro -Wl,-z,now
3866         add_cflags   -fPIE
3867         add_ldexeflags -fPIE -pie
3868     ;;
3869     ?*)
3870         die "Unknown toolchain $toolchain"
3871     ;;
3872 esac
3873
3874 test -n "$cross_prefix" && enable cross_compile
3875
3876 if enabled cross_compile; then
3877     test -n "$arch" && test -n "$target_os" ||
3878         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
3879 fi
3880
3881 ar_default="${cross_prefix}${ar_default}"
3882 cc_default="${cross_prefix}${cc_default}"
3883 cxx_default="${cross_prefix}${cxx_default}"
3884 nm_default="${cross_prefix}${nm_default}"
3885 pkg_config_default="${cross_prefix}${pkg_config_default}"
3886 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
3887     ranlib_default="${cross_prefix}${ranlib_default} -D"
3888 else
3889     ranlib_default="${cross_prefix}${ranlib_default}"
3890 fi
3891 strip_default="${cross_prefix}${strip_default}"
3892 windres_default="${cross_prefix}${windres_default}"
3893
3894 sysinclude_default="${sysroot}/usr/include"
3895
3896 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3897     target_exec target_os x86asmexe nvcc
3898 enabled cross_compile || host_cc_default=$cc
3899 set_default host_cc
3900
3901 pkg_config_fail_message=""
3902 if ! $pkg_config --version >/dev/null 2>&1; then
3903     warn "$pkg_config not found, library detection may fail."
3904     pkg_config=false
3905 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
3906     pkg_config_fail_message="
3907 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
3908 fi
3909
3910 if test $doxygen != $doxygen_default && \
3911   ! $doxygen --version >/dev/null 2>&1; then
3912     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3913 fi
3914
3915 exesuf() {
3916     case $1 in
3917         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3918     esac
3919 }
3920
3921 EXESUF=$(exesuf $target_os)
3922 HOSTEXESUF=$(exesuf $host_os)
3923
3924 # set temporary file name
3925 : ${TMPDIR:=$TEMPDIR}
3926 : ${TMPDIR:=$TMP}
3927 : ${TMPDIR:=/tmp}
3928
3929 if [ -n "$tempprefix" ] ; then
3930     mktemp(){
3931         tmpname="$tempprefix.${HOSTNAME}.${UID}"
3932         echo "$tmpname"
3933         mkdir "$tmpname"
3934     }
3935 elif ! check_cmd mktemp -u XXXXXX; then
3936     # simple replacement for missing mktemp
3937     # NOT SAFE FOR GENERAL USE
3938     mktemp(){
3939         tmpname="${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3940         echo "$tmpname"
3941         mkdir "$tmpname"
3942     }
3943 fi
3944
3945 FFTMPDIR=$(mktemp -d "${TMPDIR}/ffconf.XXXXXXXX" 2> /dev/null) ||
3946     die "Unable to create temporary directory in $TMPDIR."
3947
3948 tmpfile(){
3949     tmp="${FFTMPDIR}/test"$2
3950     (set -C; exec > $tmp) 2> /dev/null ||
3951         die "Unable to create temporary file in $FFTMPDIR."
3952     eval $1=$tmp
3953 }
3954
3955 trap 'rm -rf -- "$FFTMPDIR"' EXIT
3956 trap 'exit 2' INT
3957
3958 tmpfile TMPASM .asm
3959 tmpfile TMPC   .c
3960 tmpfile TMPCPP .cpp
3961 tmpfile TMPE   $EXESUF
3962 tmpfile TMPH   .h
3963 tmpfile TMPM   .m
3964 tmpfile TMPO   .o
3965 tmpfile TMPS   .S
3966 tmpfile TMPSH  .sh
3967 tmpfile TMPV   .ver
3968
3969 unset -f mktemp
3970
3971 chmod +x $TMPE
3972
3973 # make sure we can execute files in $TMPDIR
3974 cat > $TMPSH 2>> $logfile <<EOF
3975 #! /bin/sh
3976 EOF
3977 chmod +x $TMPSH >> $logfile 2>&1
3978 if ! $TMPSH >> $logfile 2>&1; then
3979     cat <<EOF
3980 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3981 variable to another directory and make sure that it is not mounted noexec.
3982 EOF
3983     die "Sanity test failed."
3984 fi
3985
3986 armasm_flags(){
3987     for flag; do
3988         case $flag in
3989             # Filter out MSVC cl.exe options from cflags that shouldn't
3990             # be passed to gas-preprocessor
3991             -M[TD]*)                                            ;;
3992             *)                  echo $flag                      ;;
3993         esac
3994    done
3995 }
3996
3997 cparser_flags(){
3998     for flag; do
3999         case $flag in
4000             -Wno-switch)             echo -Wno-switch-enum ;;
4001             -Wno-format-zero-length) ;;
4002             -Wdisabled-optimization) ;;
4003             -Wno-pointer-sign)       echo -Wno-other ;;
4004             *)                       echo $flag ;;
4005         esac
4006     done
4007 }
4008
4009 msvc_common_flags(){
4010     for flag; do
4011         case $flag in
4012             # In addition to specifying certain flags under the compiler
4013             # specific filters, they must be specified here as well or else the
4014             # generic catch all at the bottom will print the original flag.
4015             -Wall)                ;;
4016             -Wextra)              ;;
4017             -std=c99)             ;;
4018             # Common flags
4019             -fomit-frame-pointer) ;;
4020             -g)                   echo -Z7 ;;
4021             -fno-math-errno)      ;;
4022             -fno-common)          ;;
4023             -fno-signed-zeros)    ;;
4024             -fPIC)                ;;
4025             -mthumb)              ;;
4026             -march=*)             ;;
4027             -lz)                  echo zlib.lib ;;
4028             -lx264)               echo libx264.lib ;;
4029             -lstdc++)             ;;
4030             -l*)                  echo ${flag#-l}.lib ;;
4031             -LARGEADDRESSAWARE)   echo $flag ;;
4032             -L*)                  echo -libpath:${flag#-L} ;;
4033             *)                    echo $flag ;;
4034         esac
4035     done
4036 }
4037
4038 msvc_flags(){
4039     msvc_common_flags "$@"
4040     for flag; do
4041         case $flag in
4042             -Wall)                echo -W3 -wd4018 -wd4146 -wd4244 -wd4305     \
4043                                        -wd4554 ;;
4044             -Wextra)              echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
4045                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
4046                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
4047                                        -wd4307 \
4048                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
4049         esac
4050     done
4051 }
4052
4053 icl_flags(){
4054     msvc_common_flags "$@"
4055     for flag; do
4056         case $flag in
4057             # Despite what Intel's documentation says -Wall, which is supported
4058             # on Windows, does enable remarks so disable them here.
4059             -Wall)                echo $flag -Qdiag-disable:remark ;;
4060             -std=c99)             echo -Qstd=c99 ;;
4061             -flto)                echo -ipo ;;
4062         esac
4063     done
4064 }
4065
4066 icc_flags(){
4067     for flag; do
4068         case $flag in
4069             -flto)                echo -ipo ;;
4070             *)                    echo $flag ;;
4071         esac
4072     done
4073 }
4074
4075 pgi_flags(){
4076     for flag; do
4077         case $flag in
4078             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
4079             -fomit-frame-pointer) echo -Mnoframe ;;
4080             -g)                   echo -gopt ;;
4081             *)                    echo $flag ;;
4082         esac
4083     done
4084 }
4085
4086 suncc_flags(){
4087     for flag; do
4088         case $flag in
4089             -march=*|-mcpu=*)
4090                 case "${flag#*=}" in
4091                     native)                   echo -xtarget=native       ;;
4092                     v9|niagara)               echo -xarch=sparc          ;;
4093                     ultrasparc)               echo -xarch=sparcvis       ;;
4094                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
4095                     i586|pentium)             echo -xchip=pentium        ;;
4096                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
4097                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
4098                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
4099                     pentium4*)          echo -xtarget=pentium4           ;;
4100                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
4101                     *-sse3)             echo -xarch=sse3                 ;;
4102                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
4103                     bonnell)                   echo -xarch=ssse3         ;;
4104                     corei7|nehalem)            echo -xtarget=nehalem     ;;
4105                     westmere)                  echo -xtarget=westmere    ;;
4106                     silvermont)                echo -xarch=sse4_2        ;;
4107                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
4108                     core-avx*|ivybridge|haswell|broadwell|skylake*|knl)
4109                                                echo -xarch=avx           ;;
4110                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
4111                     btver1)                    echo -xarch=amdsse4a      ;;
4112                     btver2|bdver*|znver*)      echo -xarch=avx           ;;
4113                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
4114                     k8|opteron|athlon64|athlon-fx)
4115                                                echo -xarch=sse2a         ;;
4116                     athlon*)                   echo -xarch=pentium_proa  ;;
4117                 esac
4118                 ;;
4119             -std=c99)             echo -xc99              ;;
4120             -fomit-frame-pointer) echo -xregs=frameptr    ;;
4121             -fPIC)                echo -KPIC -xcode=pic32 ;;
4122             -W*,*)                echo $flag              ;;
4123             -f*-*|-W*|-mimpure-text)                      ;;
4124             -shared)              echo -G                 ;;
4125             *)                    echo $flag              ;;
4126         esac
4127     done
4128 }
4129
4130 tms470_flags(){
4131     for flag; do
4132         case $flag in
4133             -march=*|-mcpu=*)
4134                 case "${flag#*=}" in
4135                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
4136                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
4137                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
4138                     armv6*|arm11*)          echo -mv=6   ;;
4139                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
4140                                             echo -mv=5e  ;;
4141                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
4142                 esac
4143                 ;;
4144             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
4145             -mfpu=vfp)      echo --float_support=vfpv2        ;;
4146             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
4147             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
4148             -msoft-float)   echo --float_support=vfplib       ;;
4149             -O[0-3]|-mf=*)  echo $flag                        ;;
4150             -g)             echo -g -mn                       ;;
4151             -pds=*)         echo $flag                        ;;
4152             -D*|-I*)        echo $flag                        ;;
4153             --gcc|--abi=*)  echo $flag                        ;;
4154             -me)            echo $flag                        ;;
4155         esac
4156     done
4157 }
4158
4159 probe_cc(){
4160     pfx=$1
4161     _cc=$2
4162     first=$3
4163
4164     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
4165     unset _ld_o _ldflags _ld_lib _ld_path
4166     unset _depflags _DEPCMD _DEPFLAGS
4167     _flags_filter=echo
4168
4169     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
4170         true # no-op to avoid reading stdin in following checks
4171     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
4172         _type=llvm_gcc
4173         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
4174         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
4175         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4176         _cflags_speed='-O3'
4177         _cflags_size='-Os'
4178     elif $_cc -v 2>&1 | grep -qi ^gcc; then
4179         _type=gcc
4180         gcc_version=$($_cc --version | head -n1)
4181         gcc_basever=$($_cc -dumpversion)
4182         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
4183         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
4184         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
4185         case $gcc_basever in
4186             2) ;;
4187             2.*) ;;
4188             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
4189         esac
4190         if [ "$first" = true ]; then
4191             case $gcc_basever in
4192                 4.2*)
4193                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
4194             esac
4195         fi
4196         _cflags_speed='-O3'
4197         _cflags_size='-Os'
4198     elif $_cc --version 2>/dev/null | grep -q ^icc; then
4199         _type=icc
4200         _ident=$($_cc --version | head -n1)
4201         _depflags='-MMD'
4202         _cflags_speed='-O3'
4203         _cflags_size='-Os'
4204         _cflags_noopt='-O1'
4205         _flags_filter=icc_flags
4206     elif $_cc -v 2>&1 | grep -q xlc; then
4207         _type=xlc
4208         _ident=$($_cc -qversion 2>/dev/null | head -n1)
4209         _cflags_speed='-O5'
4210         _cflags_size='-O5 -qcompact'
4211     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
4212         test -d "$sysroot" || die "No valid sysroot specified."
4213         _type=armcc
4214         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
4215         armcc_conf="$PWD/armcc.conf"
4216         $_cc --arm_linux_configure                 \
4217              --arm_linux_config_file="$armcc_conf" \
4218              --configure_sysroot="$sysroot"        \
4219              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
4220              die "Error creating armcc configuration file."
4221         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
4222         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
4223         as_default="${cross_prefix}gcc"
4224         _depflags='-MMD'
4225         _cflags_speed='-O3'
4226         _cflags_size='-Os'
4227     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
4228         _type=tms470
4229         _ident=$($_cc -version | head -n1 | tr -s ' ')
4230         _flags='--gcc --abi=eabi -me'
4231         _cc_e='-ppl -fe=$@'
4232         _cc_o='-fe=$@'
4233         _depflags='-ppa -ppd=$(@:.o=.d)'
4234         _cflags_speed='-O3 -mf=5'
4235         _cflags_size='-O3 -mf=2'
4236         _flags_filter=tms470_flags
4237     elif $_cc -v 2>&1 | grep -q clang; then
4238         _type=clang
4239         _ident=$($_cc --version 2>/dev/null | head -n1)
4240         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4241         _cflags_speed='-O3'
4242         _cflags_size='-Oz'
4243     elif $_cc -V 2>&1 | grep -q Sun; then
4244         _type=suncc
4245         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
4246         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
4247         _DEPFLAGS='-xM1 -xc99'
4248         _ldflags='-std=c99'
4249         _cflags_speed='-O5'
4250         _cflags_size='-O5 -xspace'
4251         _flags_filter=suncc_flags
4252     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
4253         _type=pathscale
4254         _ident=$($_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'
4259     elif $_cc -v 2>&1 | grep -q Open64; then
4260         _type=open64
4261         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4262         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4263         _cflags_speed='-O2'
4264         _cflags_size='-Os'
4265         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
4266     elif $_cc -V 2>&1 | grep -q Portland; then
4267         _type=pgi
4268         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
4269         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
4270         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
4271         _cflags_size="-O2 -Munroll=c:1 $opt_common"
4272         _cflags_noopt="-O"
4273         _flags_filter=pgi_flags
4274     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
4275         _type=armasm
4276         _ident=$($_cc | head -n1)
4277         # 4509: "This form of conditional instruction is deprecated"
4278         _flags="-nologo -ignore 4509"
4279         _flags_filter=armasm_flags
4280     elif $_cc 2>&1 | grep -q Intel; then
4281         _type=icl
4282         _ident=$($_cc 2>&1 | head -n1)
4283         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
4284         # Not only is O3 broken on 13.x+ but it is slower on all previous
4285         # versions (tested) as well.
4286         _cflags_speed="-O2"
4287         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
4288         if $_cc 2>&1 | grep -q Linker; then
4289             _ld_o='-out:$@'
4290         else
4291             _ld_o='-Fe$@'
4292         fi
4293         _cc_o='-Fo$@'
4294         _cc_e='-P'
4295         _flags_filter=icl_flags
4296         _ld_lib='lib%.a'
4297         _ld_path='-libpath:'
4298         # -Qdiag-error to make icl error when seeing certain unknown arguments
4299         _flags='-nologo -Qdiag-error:4044,10157'
4300         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
4301         # with MSVC which enables it by default.
4302         _cflags='-Qms0 -Qvec- -Qsimd- -GS -fp:precise'
4303         disable stripping
4304     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
4305         # lld can emulate multiple different linkers; in ms link.exe mode,
4306         # the -? parameter gives the help output which contains an identifyable
4307         # string, while it gives an error in other modes.
4308         _type=lld-link
4309         # The link.exe mode doesn't have a switch for getting the version,
4310         # but we can force it back to gnu mode and get the version from there.
4311         _ident=$($_cc -flavor gnu --version 2>/dev/null)
4312         _ld_o='-out:$@'
4313         _flags_filter=msvc_flags
4314         _ld_lib='lib%.a'
4315         _ld_path='-libpath:'
4316     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
4317         _type=msvc
4318         _ident=$($_cc 2>&1 | head -n1)
4319         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
4320         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
4321         _cflags_speed="-O2"
4322         _cflags_size="-O1"
4323         _cflags_noopt="-O1"
4324         if $_cc -nologo- 2>&1 | grep -q Linker; then
4325             _ld_o='-out:$@'
4326         else
4327             _ld_o='-Fe$@'
4328         fi
4329         _cc_o='-Fo$@'
4330         _cc_e='-P -Fi$@'
4331         _flags_filter=msvc_flags
4332         _ld_lib='lib%.a'
4333         _ld_path='-libpath:'
4334         _flags='-nologo'
4335         disable stripping
4336     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
4337         _type=cparser
4338         _ident=$($_cc --version | head -n1)
4339         _depflags='-MMD'
4340         _cflags_speed='-O4'
4341         _cflags_size='-O2'
4342         _flags_filter=cparser_flags
4343     fi
4344
4345     eval ${pfx}_type=\$_type
4346     eval ${pfx}_ident=\$_ident
4347 }
4348
4349 set_ccvars(){
4350     eval ${1}_C=\${_cc_c-\${${1}_C}}
4351     eval ${1}_E=\${_cc_e-\${${1}_E}}
4352     eval ${1}_O=\${_cc_o-\${${1}_O}}
4353
4354     if [ -n "$_depflags" ]; then
4355         eval ${1}_DEPFLAGS=\$_depflags
4356     else
4357         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
4358         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
4359         eval DEP${1}FLAGS=\$_flags
4360     fi
4361 }
4362
4363 probe_cc cc "$cc" "true"
4364 cflags_filter=$_flags_filter
4365 cflags_speed=$_cflags_speed
4366 cflags_size=$_cflags_size
4367 cflags_noopt=$_cflags_noopt
4368 add_cflags $_flags $_cflags
4369 cc_ldflags=$_ldflags
4370 set_ccvars CC
4371 set_ccvars CXX
4372
4373 probe_cc hostcc "$host_cc"
4374 host_cflags_filter=$_flags_filter
4375 host_cflags_speed=$_cflags_speed
4376 add_host_cflags  $_flags $_cflags
4377 set_ccvars HOSTCC
4378
4379 test -n "$cc_type" && enable $cc_type ||
4380     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4381
4382 : ${as_default:=$cc}
4383 : ${objcc_default:=$cc}
4384 : ${dep_cc_default:=$cc}
4385 : ${ld_default:=$cc}
4386 : ${host_ld_default:=$host_cc}
4387 set_default ar as objcc dep_cc ld ln_s host_ld windres
4388
4389 probe_cc as "$as"
4390 asflags_filter=$_flags_filter
4391 add_asflags $_flags $_cflags
4392 set_ccvars AS
4393
4394 probe_cc objcc "$objcc"
4395 objcflags_filter=$_flags_filter
4396 add_objcflags $_flags $_cflags
4397 set_ccvars OBJC
4398
4399 probe_cc ld "$ld"
4400 ldflags_filter=$_flags_filter
4401 add_ldflags $_flags $_ldflags
4402 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4403 LD_O=${_ld_o-$LD_O}
4404 LD_LIB=${_ld_lib-$LD_LIB}
4405 LD_PATH=${_ld_path-$LD_PATH}
4406
4407 probe_cc hostld "$host_ld"
4408 host_ldflags_filter=$_flags_filter
4409 add_host_ldflags $_flags $_ldflags
4410 HOSTLD_O=${_ld_o-$HOSTLD_O}
4411
4412 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4413     probe_cc depcc "$dep_cc"
4414     CCDEP=${_DEPCMD:-$DEPCMD}
4415     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4416     DEPCCFLAGS=$_flags
4417 fi
4418
4419 if $ar 2>&1 | grep -q Microsoft; then
4420     arflags="-nologo"
4421     ar_o='-out:$@'
4422 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
4423     arflags="rq"
4424     ar_o='$@'
4425 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
4426     arflags='-Xany -r -c'
4427     ar_o='$@'
4428 elif $ar 2>&1 | grep -q "\[D\] "; then
4429     arflags="rcD"
4430     ar_o='$@'
4431 else
4432     arflags="rc"
4433     ar_o='$@'
4434 fi
4435
4436 add_cflags $extra_cflags
4437 add_cxxflags $extra_cxxflags
4438 add_objcflags $extra_objcflags
4439 add_asflags $extra_cflags
4440
4441 if test -n "$sysroot"; then
4442     case "$cc_type" in
4443         gcc|llvm_gcc|clang)
4444             add_cppflags --sysroot="$sysroot"
4445             add_ldflags --sysroot="$sysroot"
4446         ;;
4447         tms470)
4448             add_cppflags -I"$sysinclude"
4449             add_ldflags  --sysroot="$sysroot"
4450         ;;
4451     esac
4452 fi
4453
4454 if test "$cpu" = host; then
4455     enabled cross_compile &&
4456         die "--cpu=host makes no sense when cross-compiling."
4457
4458     case "$cc_type" in
4459         gcc|llvm_gcc)
4460             check_native(){
4461                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4462                 sed -n "/cc1.*$1=/{
4463                             s/.*$1=\\([^ ]*\\).*/\\1/
4464                             p
4465                             q
4466                         }" $TMPE
4467             }
4468             cpu=$(check_native -march || check_native -mcpu)
4469         ;;
4470         clang)
4471             check_native(){
4472                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4473                 sed -n "/cc1.*-target-cpu /{
4474                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4475                             p
4476                             q
4477                         }" $TMPE
4478             }
4479             cpu=$(check_native -march)
4480         ;;
4481     esac
4482
4483     test "${cpu:-host}" = host &&
4484         die "--cpu=host not supported with compiler $cc"
4485 fi
4486
4487 # Deal with common $arch aliases
4488 case "$arch" in
4489     aarch64|arm64)
4490         arch="aarch64"
4491     ;;
4492     arm*|iPad*|iPhone*)
4493         arch="arm"
4494     ;;
4495     mips*|IP*)
4496         case "$arch" in
4497         *el)
4498             add_cppflags -EL
4499             add_ldflags -EL
4500         ;;
4501         *eb)
4502             add_cppflags -EB
4503             add_ldflags -EB
4504         ;;
4505         esac
4506         arch="mips"
4507     ;;
4508     parisc*|hppa*)
4509         arch="parisc"
4510     ;;
4511     "Power Macintosh"|ppc*|powerpc*)
4512         arch="ppc"
4513     ;;
4514     s390|s390x)
4515         arch="s390"
4516     ;;
4517     sh4|sh)
4518         arch="sh4"
4519     ;;
4520     sun4*|sparc*)
4521         arch="sparc"
4522     ;;
4523     tilegx|tile-gx)
4524         arch="tilegx"
4525     ;;
4526     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4527         arch="x86"
4528     ;;
4529 esac
4530
4531 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4532 enable $arch
4533
4534 # Add processor-specific flags
4535 if enabled aarch64; then
4536
4537     case $cpu in
4538         armv*)
4539             cpuflags="-march=$cpu"
4540         ;;
4541         *)
4542             cpuflags="-mcpu=$cpu"
4543         ;;
4544     esac
4545
4546 elif enabled alpha; then
4547
4548     cpuflags="-mcpu=$cpu"
4549
4550 elif enabled arm; then
4551
4552     check_arm_arch() {
4553         check_cpp_condition stddef.h \
4554             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4555             $cpuflags
4556     }
4557
4558     probe_arm_arch() {
4559         if   check_arm_arch 4;        then echo armv4
4560         elif check_arm_arch 4T;       then echo armv4t
4561         elif check_arm_arch 5;        then echo armv5
4562         elif check_arm_arch 5E;       then echo armv5e
4563         elif check_arm_arch 5T;       then echo armv5t
4564         elif check_arm_arch 5TE;      then echo armv5te
4565         elif check_arm_arch 5TEJ;     then echo armv5te
4566         elif check_arm_arch 6;        then echo armv6
4567         elif check_arm_arch 6J;       then echo armv6j
4568         elif check_arm_arch 6K;       then echo armv6k
4569         elif check_arm_arch 6Z;       then echo armv6z
4570         elif check_arm_arch 6ZK;      then echo armv6zk
4571         elif check_arm_arch 6T2;      then echo armv6t2
4572         elif check_arm_arch 7;        then echo armv7
4573         elif check_arm_arch 7A  7_A;  then echo armv7-a
4574         elif check_arm_arch 7S;       then echo armv7-a
4575         elif check_arm_arch 7R  7_R;  then echo armv7-r
4576         elif check_arm_arch 7M  7_M;  then echo armv7-m
4577         elif check_arm_arch 7EM 7E_M; then echo armv7-m
4578         elif check_arm_arch 8A  8_A;  then echo armv8-a
4579         fi
4580     }
4581
4582     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4583
4584     case $cpu in
4585         armv*)
4586             cpuflags="-march=$cpu"
4587             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4588         ;;
4589         *)
4590             cpuflags="-mcpu=$cpu"
4591             case $cpu in
4592                 cortex-a*)                               subarch=armv7a  ;;
4593                 cortex-r*)                               subarch=armv7r  ;;
4594                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4595                 arm11*)                                  subarch=armv6   ;;
4596                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4597                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4598                 *)                             subarch=$(probe_arm_arch) ;;
4599             esac
4600         ;;
4601     esac
4602
4603     case "$subarch" in
4604         armv5t*)    enable fast_clz                ;;
4605         armv[6-8]*)
4606             enable fast_clz
4607             disabled fast_unaligned || enable fast_unaligned
4608             ;;
4609     esac
4610
4611 elif enabled avr32; then
4612
4613     case $cpu in
4614         ap7[02]0[0-2])
4615             subarch="avr32_ap"
4616             cpuflags="-mpart=$cpu"
4617         ;;
4618         ap)
4619             subarch="avr32_ap"
4620             cpuflags="-march=$cpu"
4621         ;;
4622         uc3[ab]*)
4623             subarch="avr32_uc"
4624             cpuflags="-mcpu=$cpu"
4625         ;;
4626         uc)
4627             subarch="avr32_uc"
4628             cpuflags="-march=$cpu"
4629         ;;
4630     esac
4631
4632 elif enabled bfin; then
4633
4634     cpuflags="-mcpu=$cpu"
4635
4636 elif enabled mips; then
4637
4638     cpuflags="-march=$cpu"
4639
4640     if [ "$cpu" != "generic" ]; then
4641         disable mips32r2
4642         disable mips32r5
4643         disable mips64r2
4644         disable mips32r6
4645         disable mips64r6
4646         disable loongson2
4647         disable loongson3
4648
4649         case $cpu in
4650             24kc|24kf*|24kec|34kc|1004kc|24kef*|34kf*|1004kf*|74kc|74kf)
4651                 enable mips32r2
4652                 disable msa
4653             ;;
4654             p5600|i6400|p6600)
4655                 disable mipsdsp
4656                 disable mipsdspr2
4657             ;;
4658             loongson*)
4659                 enable loongson2
4660                 enable loongson3
4661                 enable local_aligned
4662                 enable simd_align_16
4663                 enable fast_64bit
4664                 enable fast_clz
4665                 enable fast_cmov
4666                 enable fast_unaligned
4667                 disable aligned_stack
4668                 disable mipsfpu
4669                 disable mipsdsp
4670                 disable mipsdspr2
4671                 case $cpu in
4672                     loongson3*)
4673                         cpuflags="-march=loongson3a -mhard-float -fno-expensive-optimizations"
4674                     ;;
4675                     loongson2e)
4676                         cpuflags="-march=loongson2e -mhard-float -fno-expensive-optimizations"
4677                     ;;
4678                     loongson2f)
4679                         cpuflags="-march=loongson2f -mhard-float -fno-expensive-optimizations"
4680                     ;;
4681                 esac
4682             ;;
4683             *)
4684                 # Unknown CPU. Disable everything.
4685                 warn "unknown CPU. Disabling all MIPS optimizations."
4686                 disable mipsfpu
4687                 disable mipsdsp
4688                 disable mipsdspr2
4689                 disable msa
4690                 disable mmi
4691             ;;
4692         esac
4693
4694         case $cpu in
4695             24kc)
4696                 disable mipsfpu
4697                 disable mipsdsp
4698                 disable mipsdspr2
4699             ;;
4700             24kf*)
4701                 disable mipsdsp
4702                 disable mipsdspr2
4703             ;;
4704             24kec|34kc|1004kc)
4705                 disable mipsfpu
4706                 disable mipsdspr2
4707             ;;
4708             24kef*|34kf*|1004kf*)
4709                 disable mipsdspr2
4710             ;;
4711             74kc)
4712                 disable mipsfpu
4713             ;;
4714             p5600)
4715                 enable mips32r5
4716                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
4717             ;;
4718             i6400)
4719                 enable mips64r6
4720                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4721             ;;
4722             p6600)
4723                 enable mips64r6
4724                 check_cflags "-mtune=p6600 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4725             ;;
4726         esac
4727     else
4728         # We do not disable anything. Is up to the user to disable the unwanted features.
4729         warn 'generic cpu selected'
4730     fi
4731
4732 elif enabled ppc; then
4733
4734     disable ldbrx
4735
4736     case $(tolower $cpu) in
4737         601|ppc601|powerpc601)
4738             cpuflags="-mcpu=601"
4739             disable altivec
4740         ;;
4741         603*|ppc603*|powerpc603*)
4742             cpuflags="-mcpu=603"
4743             disable altivec
4744         ;;
4745         604*|ppc604*|powerpc604*)
4746             cpuflags="-mcpu=604"
4747             disable altivec
4748         ;;
4749         g3|75*|ppc75*|powerpc75*)
4750             cpuflags="-mcpu=750"
4751             disable altivec
4752         ;;
4753         g4|745*|ppc745*|powerpc745*)
4754             cpuflags="-mcpu=7450"
4755             disable vsx
4756         ;;
4757         74*|ppc74*|powerpc74*)
4758             cpuflags="-mcpu=7400"
4759             disable vsx
4760         ;;
4761         g5|970|ppc970|powerpc970)
4762             cpuflags="-mcpu=970"
4763             disable vsx
4764         ;;
4765         power[3-6]*)
4766             cpuflags="-mcpu=$cpu"
4767             disable vsx
4768         ;;
4769         power[7-8]*)
4770             cpuflags="-mcpu=$cpu"
4771         ;;
4772         cell)
4773             cpuflags="-mcpu=cell"
4774             enable ldbrx
4775             disable vsx
4776         ;;
4777         e500mc)
4778             cpuflags="-mcpu=e500mc"
4779             disable altivec
4780         ;;
4781         e500v2)
4782             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
4783             disable altivec
4784             disable dcbzl
4785         ;;
4786         e500)
4787             cpuflags="-mcpu=8540 -mhard-float"
4788             disable altivec
4789             disable dcbzl
4790         ;;
4791     esac
4792
4793 elif enabled sparc; then
4794
4795     case $cpu in
4796         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
4797             cpuflags="-mcpu=$cpu"
4798         ;;
4799         ultrasparc*|niagara[234])
4800             cpuflags="-mcpu=$cpu"
4801         ;;
4802     esac
4803
4804 elif enabled x86; then
4805
4806     case $cpu in
4807         i[345]86|pentium)
4808             cpuflags="-march=$cpu"
4809             disable i686
4810             disable mmx
4811         ;;
4812         # targets that do NOT support nopl and conditional mov (cmov)
4813         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
4814             cpuflags="-march=$cpu"
4815             disable i686
4816         ;;
4817         # targets that do support nopl and conditional mov (cmov)
4818         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
4819         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|skylake*|knl\
4820         |amdfam10|barcelona|b[dt]ver*|znver*)
4821             cpuflags="-march=$cpu"
4822             enable i686
4823             enable fast_cmov
4824         ;;
4825         # targets that do support conditional mov but on which it's slow
4826         pentium4|pentium4m|prescott|nocona)
4827             cpuflags="-march=$cpu"
4828             enable i686
4829             disable fast_cmov
4830         ;;
4831     esac
4832
4833 fi
4834
4835 if [ "$cpu" != generic ]; then
4836     add_cflags  $cpuflags
4837     add_asflags $cpuflags
4838     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
4839 fi
4840
4841 # compiler sanity check
4842 check_exec <<EOF
4843 int main(void){ return 0; }
4844 EOF
4845 if test "$?" != 0; then
4846     echo "$cc is unable to create an executable file."
4847     if test -z "$cross_prefix" && ! enabled cross_compile ; then
4848         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
4849         echo "Only do this if you know what cross compiling means."
4850     fi
4851     die "C compiler test failed."
4852 fi
4853
4854 add_cppflags -D_ISOC99_SOURCE
4855 add_cxxflags -D__STDC_CONSTANT_MACROS
4856 check_cxxflags -std=c++11 || check_cxxflags -std=c++0x
4857
4858 # some compilers silently accept -std=c11, so we also need to check that the
4859 # version macro is defined properly
4860 test_cflags_cc -std=c11 ctype.h "__STDC_VERSION__ >= 201112L" &&
4861     add_cflags -std=c11 ||
4862     check_cflags -std=c99
4863
4864 check_cppflags -D_FILE_OFFSET_BITS=64
4865 check_cppflags -D_LARGEFILE_SOURCE
4866
4867 add_host_cppflags -D_ISOC99_SOURCE
4868 check_host_cflags -std=c99
4869 check_host_cflags -Wall
4870 check_host_cflags $host_cflags_speed
4871
4872 check_64bit(){
4873     arch32=$1
4874     arch64=$2
4875     expr=$3
4876     check_code cc "" "int test[2*($expr) - 1]" &&
4877         subarch=$arch64 || subarch=$arch32
4878 }
4879
4880 case "$arch" in
4881     aarch64|alpha|ia64)
4882         spic=$shared
4883     ;;
4884     mips)
4885         check_64bit mips mips64 '_MIPS_SIM > 1'