hwcontext_opencl: DXVA2 to OpenCL mapping
[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 processing [no]
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 if test -t 1 && which tput >/dev/null 2>&1; then
466     ncolors=$(tput colors)
467     if test -n "$ncolors" && test $ncolors -ge 8; then
468         bold_color=$(tput bold)
469         warn_color=$(tput setaf 3)
470         error_color=$(tput setaf 1)
471         reset_color=$(tput sgr0)
472     fi
473     # 72 used instead of 80 since that's the default of pr
474     ncols=$(tput cols)
475 fi
476 : ${ncols:=72}
477
478 log(){
479     echo "$@" >> $logfile
480 }
481
482 log_file(){
483     log BEGIN $1
484     pr -n -t $1 >> $logfile
485     log END $1
486 }
487
488 warn(){
489     log "WARNING: $*"
490     WARNINGS="${WARNINGS}WARNING: $*\n"
491 }
492
493 die(){
494     log "$@"
495     echo "$error_color$bold_color$@$reset_color"
496     cat <<EOF
497
498 If you think configure made a mistake, make sure you are using the latest
499 version from Git.  If the latest version fails, report the problem to the
500 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
501 EOF
502     if disabled logging; then
503         cat <<EOF
504 Rerun configure with logging enabled (do not use --disable-logging), and
505 include the log this produces with your report.
506 EOF
507     else
508         cat <<EOF
509 Include the log file "$logfile" produced by configure as this will help
510 solve the problem.
511 EOF
512     fi
513     exit 1
514 }
515
516 # Avoid locale weirdness, besides we really just want to translate ASCII.
517 toupper(){
518     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
519 }
520
521 tolower(){
522     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
523 }
524
525 c_escape(){
526     echo "$*" | sed 's/["\\]/\\\0/g'
527 }
528
529 sh_quote(){
530     v=$(echo "$1" | sed "s/'/'\\\\''/g")
531     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
532     echo "$v"
533 }
534
535 cleanws(){
536     echo "$@" | sed 's/^ *//;s/[[:space:]][[:space:]]*/ /g;s/ *$//'
537 }
538
539 filter(){
540     pat=$1
541     shift
542     for v; do
543         eval "case '$v' in $pat) printf '%s ' '$v' ;; esac"
544     done
545 }
546
547 filter_out(){
548     pat=$1
549     shift
550     for v; do
551         eval "case '$v' in $pat) ;; *) printf '%s ' '$v' ;; esac"
552     done
553 }
554
555 map(){
556     m=$1
557     shift
558     for v; do eval $m; done
559 }
560
561 add_suffix(){
562     suffix=$1
563     shift
564     for v; do echo ${v}${suffix}; done
565 }
566
567 set_all(){
568     value=$1
569     shift
570     for var in $*; do
571         eval $var=$value
572     done
573 }
574
575 set_weak(){
576     value=$1
577     shift
578     for var; do
579         eval : \${$var:=$value}
580     done
581 }
582
583 sanitize_var_name(){
584     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
585 }
586
587 set_sanitized(){
588     var=$1
589     shift
590     eval $(sanitize_var_name "$var")='$*'
591 }
592
593 get_sanitized(){
594     eval echo \$$(sanitize_var_name "$1")
595 }
596
597 pushvar(){
598     for pvar in $*; do
599         eval level=\${${pvar}_level:=0}
600         eval ${pvar}_${level}="\$$pvar"
601         eval ${pvar}_level=$(($level+1))
602     done
603 }
604
605 popvar(){
606     for pvar in $*; do
607         eval level=\${${pvar}_level:-0}
608         test $level = 0 && continue
609         eval level=$(($level-1))
610         eval $pvar="\${${pvar}_${level}}"
611         eval ${pvar}_level=$level
612         eval unset ${pvar}_${level}
613     done
614 }
615
616 request(){
617     for var in $*; do
618         eval ${var}_requested=yes
619         eval $var=
620     done
621 }
622
623 enable(){
624     set_all yes $*
625 }
626
627 disable(){
628     set_all no $*
629 }
630
631 enable_weak(){
632     set_weak yes $*
633 }
634
635 disable_weak(){
636     set_weak no $*
637 }
638
639 enable_sanitized(){
640     for var; do
641         enable $(sanitize_var_name $var)
642     done
643 }
644
645 disable_sanitized(){
646     for var; do
647         disable $(sanitize_var_name $var)
648     done
649 }
650
651 do_enable_deep(){
652     for var; do
653         enabled $var && continue
654         eval sel="\$${var}_select"
655         eval sgs="\$${var}_suggest"
656         pushvar var sgs
657         enable_deep $sel
658         popvar sgs
659         enable_deep_weak $sgs
660         popvar var
661     done
662 }
663
664 enable_deep(){
665     do_enable_deep $*
666     enable $*
667 }
668
669 enable_deep_weak(){
670     for var; do
671         disabled $var && continue
672         pushvar var
673         do_enable_deep $var
674         popvar var
675         enable_weak $var
676     done
677 }
678
679 requested(){
680     test "${1#!}" = "$1" && op="=" || op="!="
681     eval test "x\$${1#!}_requested" $op "xyes"
682 }
683
684 enabled(){
685     test "${1#!}" = "$1" && op="=" || op="!="
686     eval test "x\$${1#!}" $op "xyes"
687 }
688
689 disabled(){
690     test "${1#!}" = "$1" && op="=" || op="!="
691     eval test "x\$${1#!}" $op "xno"
692 }
693
694 enabled_all(){
695     for opt; do
696         enabled $opt || return 1
697     done
698 }
699
700 disabled_all(){
701     for opt; do
702         disabled $opt || return 1
703     done
704 }
705
706 enabled_any(){
707     for opt; do
708         enabled $opt && return 0
709     done
710 }
711
712 disabled_any(){
713     for opt; do
714         disabled $opt && return 0
715     done
716     return 1
717 }
718
719 set_default(){
720     for opt; do
721         eval : \${$opt:=\$${opt}_default}
722     done
723 }
724
725 is_in(){
726     value=$1
727     shift
728     for var in $*; do
729         [ $var = $value ] && return 0
730     done
731     return 1
732 }
733
734 check_deps(){
735     for cfg; do
736         enabled ${cfg}_checking && die "Circular dependency for $cfg."
737         disabled ${cfg}_checking && continue
738         enable ${cfg}_checking
739
740         eval dep_all="\$${cfg}_deps"
741         eval dep_any="\$${cfg}_deps_any"
742         eval dep_con="\$${cfg}_conflict"
743         eval dep_sel="\$${cfg}_select"
744         eval dep_sgs="\$${cfg}_suggest"
745         eval dep_ifa="\$${cfg}_if"
746         eval dep_ifn="\$${cfg}_if_any"
747
748         pushvar cfg dep_all dep_any dep_con dep_sel dep_sgs dep_ifa dep_ifn
749         check_deps $dep_all $dep_any $dep_con $dep_sel $dep_sgs $dep_ifa $dep_ifn
750         popvar cfg dep_all dep_any dep_con dep_sel dep_sgs dep_ifa dep_ifn
751
752         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
753         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
754         enabled_all  $dep_all || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but not all dependencies are satisfied: $dep_all"; }
755         enabled_any  $dep_any || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but not any dependency is satisfied: $dep_any"; }
756         disabled_all $dep_con || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but some conflicting dependencies are unsatisfied: $dep_con"; }
757         disabled_any $dep_sel && { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but some selected dependency is unsatisfied: $dep_sel"; }
758
759         enabled $cfg && enable_deep_weak $dep_sel $dep_sgs
760
761         for dep in $dep_all $dep_any $dep_sel $dep_sgs; do
762             # filter out library deps, these do not belong in extralibs
763             is_in $dep $LIBRARY_LIST && continue
764             enabled $dep && eval append ${cfg}_extralibs ${dep}_extralibs
765         done
766
767         disable ${cfg}_checking
768     done
769 }
770
771 print_config(){
772     pfx=$1
773     files=$2
774     shift 2
775     map 'eval echo "$v \${$v:-no}"' "$@" |
776     awk "BEGIN { split(\"$files\", files) }
777         {
778             c = \"$pfx\" toupper(\$1);
779             v = \$2;
780             sub(/yes/, 1, v);
781             sub(/no/,  0, v);
782             for (f in files) {
783                 file = files[f];
784                 if (file ~ /\\.h\$/) {
785                     printf(\"#define %s %d\\n\", c, v) >>file;
786                 } else if (file ~ /\\.asm\$/) {
787                     printf(\"%%define %s %d\\n\", c, v) >>file;
788                 } else if (file ~ /\\.mak\$/) {
789                     n = -v ? \"\" : \"!\";
790                     printf(\"%s%s=yes\\n\", n, c) >>file;
791                 } else if (file ~ /\\.texi\$/) {
792                     pre = -v ? \"\" : \"@c \";
793                     yesno = \$2;
794                     c2 = tolower(c);
795                     gsub(/_/, \"-\", c2);
796                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
797                 }
798             }
799         }"
800 }
801
802 print_enabled(){
803     suf=$1
804     shift
805     for v; do
806         enabled $v && printf "%s\n" ${v%$suf}
807     done
808 }
809
810 append(){
811     var=$1
812     shift
813     eval "$var=\"\$$var $*\""
814 }
815
816 prepend(){
817     var=$1
818     shift
819     eval "$var=\"$* \$$var\""
820 }
821
822 unique(){
823     var=$1
824     uniq_list=""
825     for tok in $(eval echo \$$var); do
826         uniq_list="$(filter_out $tok $uniq_list) $tok"
827     done
828     eval "$var=\"${uniq_list}\""
829 }
830
831 resolve(){
832     var=$1
833     tmpvar=
834     for entry in $(eval echo \$$var); do
835         tmpvar="$tmpvar $(eval echo \$${entry})"
836     done
837     eval "$var=\"${tmpvar}\""
838 }
839
840 add_cppflags(){
841     append CPPFLAGS "$@"
842 }
843
844 add_cflags(){
845     append CFLAGS $($cflags_filter "$@")
846 }
847
848 add_cflags_headers(){
849     append CFLAGS_HEADERS $($cflags_filter "$@")
850 }
851
852 add_cxxflags(){
853     append CXXFLAGS $($cflags_filter "$@")
854 }
855
856 add_asflags(){
857     append ASFLAGS $($asflags_filter "$@")
858 }
859
860 add_objcflags(){
861     append OBJCFLAGS $($objcflags_filter "$@")
862 }
863
864 add_ldflags(){
865     append LDFLAGS $($ldflags_filter "$@")
866 }
867
868 add_ldexeflags(){
869     append LDEXEFLAGS $($ldflags_filter "$@")
870 }
871
872 add_ldsoflags(){
873     append LDSOFLAGS $($ldflags_filter "$@")
874 }
875
876 add_stripflags(){
877     append ASMSTRIPFLAGS "$@"
878 }
879
880 add_extralibs(){
881     prepend extralibs $($ldflags_filter "$@")
882 }
883
884 add_host_cppflags(){
885     append host_cppflags "$@"
886 }
887
888 add_host_cflags(){
889     append host_cflags $($host_cflags_filter "$@")
890 }
891
892 add_host_ldflags(){
893     append host_ldflags $($host_ldflags_filter "$@")
894 }
895
896 add_compat(){
897     append compat_objs $1
898     shift
899     map 'add_cppflags -D$v' "$@"
900 }
901
902 check_cmd(){
903     log "$@"
904     "$@" >> $logfile 2>&1
905 }
906
907 check_stat(){
908     log check_stat "$@"
909     stat "$1" >> $logfile 2>&1
910 }
911
912 cc_o(){
913     eval printf '%s\\n' $CC_O
914 }
915
916 cc_e(){
917     eval printf '%s\\n' $CC_E
918 }
919
920 check_cc(){
921     log check_cc "$@"
922     cat > $TMPC
923     log_file $TMPC
924     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
925 }
926
927 check_cxx(){
928     log check_cxx "$@"
929     cat > $TMPCPP
930     log_file $TMPCPP
931     check_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
932 }
933
934 check_objcc(){
935     log check_objcc "$@"
936     cat > $TMPM
937     log_file $TMPM
938     check_cmd $objcc -Werror=missing-prototypes $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPM
939 }
940
941 check_cpp(){
942     log check_cpp "$@"
943     cat > $TMPC
944     log_file $TMPC
945     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
946 }
947
948 as_o(){
949     eval printf '%s\\n' $AS_O
950 }
951
952 check_as(){
953     log check_as "$@"
954     cat > $TMPS
955     log_file $TMPS
956     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
957 }
958
959 check_inline_asm(){
960     log check_inline_asm "$@"
961     name="$1"
962     code="$2"
963     shift 2
964     disable $name
965     check_cc "$@" <<EOF && enable $name
966 void foo(void){ __asm__ volatile($code); }
967 EOF
968 }
969
970 check_inline_asm_flags(){
971     log check_inline_asm_flags "$@"
972     name="$1"
973     code="$2"
974     flags=''
975     shift 2
976     while [ "$1" != "" ]; do
977       append flags $1
978       shift
979     done;
980     disable $name
981     cat > $TMPC <<EOF
982 void foo(void){ __asm__ volatile($code); }
983 EOF
984     log_file $TMPC
985     check_cmd $cc $CPPFLAGS $CFLAGS $flags "$@" $CC_C $(cc_o $TMPO) $TMPC &&
986     enable $name && add_cflags $flags && add_asflags $flags && add_ldflags $flags
987 }
988
989 check_insn(){
990     log check_insn "$@"
991     check_inline_asm ${1}_inline "\"$2\""
992     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
993 }
994
995 check_x86asm(){
996     log check_x86asm "$@"
997     echo "$1" > $TMPS
998     log_file $TMPS
999     shift 1
1000     check_cmd $x86asmexe $X86ASMFLAGS -Werror "$@" -o $TMPO $TMPS
1001 }
1002
1003 ld_o(){
1004     eval printf '%s\\n' $LD_O
1005 }
1006
1007 check_ld(){
1008     log check_ld "$@"
1009     type=$1
1010     shift 1
1011     flags=$(filter_out '-l*|*.so' $@)
1012     libs=$(filter '-l*|*.so' $@)
1013     check_$type $($cflags_filter $flags) || return
1014     flags=$($ldflags_filter $flags)
1015     libs=$($ldflags_filter $libs)
1016     check_cmd $ld $LDFLAGS $LDEXEFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
1017 }
1018
1019 print_include(){
1020     hdr=$1
1021     test "${hdr%.h}" = "${hdr}" &&
1022         echo "#include $hdr"    ||
1023         echo "#include <$hdr>"
1024 }
1025
1026 check_code(){
1027     log check_code "$@"
1028     check=$1
1029     headers=$2
1030     code=$3
1031     shift 3
1032     {
1033         for hdr in $headers; do
1034             print_include $hdr
1035         done
1036         echo "int main(void) { $code; return 0; }"
1037     } | check_$check "$@"
1038 }
1039
1040 check_cppflags(){
1041     log check_cppflags "$@"
1042     check_cpp "$@" <<EOF && append CPPFLAGS "$@"
1043 #include <stdlib.h>
1044 EOF
1045 }
1046
1047 test_cflags(){
1048     log test_cflags "$@"
1049     set -- $($cflags_filter "$@")
1050     check_cc "$@" <<EOF
1051 int x;
1052 EOF
1053 }
1054
1055 check_cflags(){
1056     log check_cflags "$@"
1057     test_cflags "$@" && add_cflags "$@"
1058 }
1059
1060 check_cxxflags(){
1061     log check_cxxflags "$@"
1062     set -- $($cflags_filter "$@")
1063     check_cxx "$@" <<EOF && append CXXFLAGS "$@"
1064 int x;
1065 EOF
1066 }
1067
1068 test_objcflags(){
1069     log test_objcflags "$@"
1070     set -- $($objcflags_filter "$@")
1071     check_objcc "$@" <<EOF
1072 int x;
1073 EOF
1074 }
1075
1076 check_objcflags(){
1077     log check_objcflags "$@"
1078     test_objcflags "$@" && add_objcflags "$@"
1079 }
1080
1081 test_ldflags(){
1082     log test_ldflags "$@"
1083     set -- $($ldflags_filter "$@")
1084     check_ld "cc" "$@" <<EOF
1085 int main(void){ return 0; }
1086 EOF
1087 }
1088
1089 check_ldflags(){
1090     log check_ldflags "$@"
1091     test_ldflags "$@" && add_ldflags "$@"
1092 }
1093
1094 test_stripflags(){
1095     log test_stripflags "$@"
1096     # call check_cc to get a fresh TMPO
1097     check_cc <<EOF
1098 int main(void) { return 0; }
1099 EOF
1100     check_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
1101 }
1102
1103 check_stripflags(){
1104     log check_stripflags "$@"
1105     test_stripflags "$@" && add_stripflags "$@"
1106 }
1107
1108 check_header(){
1109     log check_header "$@"
1110     headers=$1
1111     shift
1112     disable_sanitized $headers
1113     {
1114         for hdr in $headers; do
1115             print_include $hdr
1116         done
1117         echo "int x;"
1118     } | check_cpp "$@" && enable_sanitized $headers
1119 }
1120
1121 check_header_objcc(){
1122     log check_header_objcc "$@"
1123     rm -f -- "$TMPO"
1124     header=$1
1125     shift
1126     disable_sanitized $header
1127     {
1128        echo "#include <$header>"
1129        echo "int main(void) { return 0; }"
1130     } | check_objcc && check_stat "$TMPO" && enable_sanitized $header
1131 }
1132
1133 check_apple_framework(){
1134     log check_apple_framework "$@"
1135     framework="$1"
1136     name="$(tolower $framework)"
1137     header="${framework}/${framework}.h"
1138     disable $name
1139     check_header_objcc $header &&
1140         enable $name && eval ${name}_extralibs='"-framework $framework"'
1141 }
1142
1143 check_func(){
1144     log check_func "$@"
1145     func=$1
1146     shift
1147     disable $func
1148     check_ld "cc" "$@" <<EOF && enable $func
1149 extern int $func();
1150 int main(void){ $func(); }
1151 EOF
1152 }
1153
1154 check_complexfunc(){
1155     log check_complexfunc "$@"
1156     func=$1
1157     narg=$2
1158     shift 2
1159     test $narg = 2 && args="f, g" || args="f * I"
1160     disable $func
1161     check_ld "cc" "$@" <<EOF && enable $func
1162 #include <complex.h>
1163 #include <math.h>
1164 float foo(complex float f, complex float g) { return $func($args); }
1165 int main(void){ return (int) foo; }
1166 EOF
1167 }
1168
1169 check_mathfunc(){
1170     log check_mathfunc "$@"
1171     func=$1
1172     narg=$2
1173     shift 2
1174     test $narg = 2 && args="f, g" || args="f"
1175     disable $func
1176     check_ld "cc" "$@" <<EOF && enable $func
1177 #include <math.h>
1178 float foo(float f, float g) { return $func($args); }
1179 int main(void){ return (int) foo; }
1180 EOF
1181 }
1182
1183 check_func_headers(){
1184     log check_func_headers "$@"
1185     headers=$1
1186     funcs=$2
1187     shift 2
1188     {
1189         for hdr in $headers; do
1190             print_include $hdr
1191         done
1192         echo "#include <stdint.h>"
1193         for func in $funcs; do
1194             echo "long check_$func(void) { return (long) $func; }"
1195         done
1196         echo "int main(void) { int ret = 0;"
1197         # LTO could optimize out the test functions without this
1198         for func in $funcs; do
1199             echo " ret |= ((intptr_t)check_$func) & 0xFFFF;"
1200         done
1201         echo "return ret; }"
1202     } | check_ld "cc" "$@" && enable $funcs && enable_sanitized $headers
1203 }
1204
1205 check_class_headers_cpp(){
1206     log check_class_headers_cpp "$@"
1207     headers=$1
1208     classes=$2
1209     shift 2
1210     {
1211         for hdr in $headers; do
1212             echo "#include <$hdr>"
1213         done
1214         echo "int main(void) { "
1215         i=1
1216         for class in $classes; do
1217             echo "$class obj$i;"
1218             i=$(expr $i + 1)
1219         done
1220         echo "return 0; }"
1221     } | check_ld "cxx" "$@" && enable $funcs && enable_sanitized $headers
1222 }
1223
1224 check_cpp_condition(){
1225     log check_cpp_condition "$@"
1226     header=$1
1227     condition=$2
1228     shift 2
1229     check_cpp "$@" <<EOF
1230 #include <$header>
1231 #if !($condition)
1232 #error "unsatisfied condition: $condition"
1233 #endif
1234 EOF
1235 }
1236
1237 test_cflags_cc(){
1238     log test_cflags_cc "$@"
1239     flags=$1
1240     header=$2
1241     condition=$3
1242     shift 3
1243     set -- $($cflags_filter "$flags")
1244     check_cc "$@" <<EOF
1245 #include <$header>
1246 #if !($condition)
1247 #error "unsatisfied condition: $condition"
1248 #endif
1249 EOF
1250 }
1251
1252 check_lib(){
1253     log check_lib "$@"
1254     name="$1"
1255     headers="$2"
1256     funcs="$3"
1257     shift 3
1258     disable $name
1259     check_func_headers "$headers" "$funcs" "$@" &&
1260         enable $name && eval ${name}_extralibs="\$@"
1261 }
1262
1263 check_lib_cpp(){
1264     log check_lib_cpp "$@"
1265     name="$1"
1266     headers="$2"
1267     classes="$3"
1268     shift 3
1269     disable $name
1270     check_class_headers_cpp "$headers" "$classes" "$@" &&
1271         enable $name && eval ${name}_extralibs="\$@"
1272 }
1273
1274 test_pkg_config(){
1275     log test_pkg_config "$@"
1276     name="$1"
1277     pkg_version="$2"
1278     pkg="${2%% *}"
1279     headers="$3"
1280     funcs="$4"
1281     shift 4
1282     disable $name
1283     check_cmd $pkg_config --exists --print-errors $pkg_version || return
1284     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1285     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1286     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1287         enable $name &&
1288         set_sanitized "${name}_cflags"    $pkg_cflags &&
1289         set_sanitized "${name}_extralibs" $pkg_libs
1290 }
1291
1292 check_pkg_config(){
1293     log check_pkg_config "$@"
1294     name="$1"
1295     test_pkg_config "$@" &&
1296         eval add_cflags \$${name}_cflags
1297 }
1298
1299 check_exec(){
1300     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1301 }
1302
1303 check_exec_crash(){
1304     log check_exec_crash "$@"
1305     code=$(cat)
1306
1307     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1308     # are safe but may not be available everywhere.  Thus we use
1309     # raise(SIGTERM) instead.  The check is run in a subshell so we
1310     # can redirect the "Terminated" message from the shell.  SIGBUS
1311     # is not defined by standard C so it is used conditionally.
1312
1313     (check_exec "$@") >> $logfile 2>&1 <<EOF
1314 #include <signal.h>
1315 static void sighandler(int sig){
1316     raise(SIGTERM);
1317 }
1318 int foo(void){
1319     $code
1320 }
1321 int (*func_ptr)(void) = foo;
1322 int main(void){
1323     signal(SIGILL, sighandler);
1324     signal(SIGFPE, sighandler);
1325     signal(SIGSEGV, sighandler);
1326 #ifdef SIGBUS
1327     signal(SIGBUS, sighandler);
1328 #endif
1329     return func_ptr();
1330 }
1331 EOF
1332 }
1333
1334 check_type(){
1335     log check_type "$@"
1336     headers=$1
1337     type=$2
1338     shift 2
1339     disable_sanitized "$type"
1340     check_code cc "$headers" "$type v" "$@" && enable_sanitized "$type"
1341 }
1342
1343 check_struct(){
1344     log check_struct "$@"
1345     headers=$1
1346     struct=$2
1347     member=$3
1348     shift 3
1349     disable_sanitized "${struct}_${member}"
1350     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1351         enable_sanitized "${struct}_${member}"
1352 }
1353
1354 check_builtin(){
1355     log check_builtin "$@"
1356     name=$1
1357     headers=$2
1358     builtin=$3
1359     shift 3
1360     disable "$name"
1361     check_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1362 }
1363
1364 check_compile_assert(){
1365     log check_compile_assert "$@"
1366     name=$1
1367     headers=$2
1368     condition=$3
1369     shift 3
1370     disable "$name"
1371     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1372 }
1373
1374 require(){
1375     log require "$@"
1376     name_version="$1"
1377     name="${1%% *}"
1378     headers="$2"
1379     func="$3"
1380     shift 3
1381     check_lib $name "$headers" $func "$@" || die "ERROR: $name_version not found"
1382 }
1383
1384 require_cpp(){
1385     name="$1"
1386     headers="$2"
1387     classes="$3"
1388     shift 3
1389     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1390 }
1391
1392 require_header(){
1393     log require_header "$@"
1394     headers="$1"
1395     shift
1396     check_header "$headers" "$@" || die "ERROR: $headers not found"
1397 }
1398
1399 require_cpp_condition(){
1400     log require_cpp_condition "$@"
1401     header="$1"
1402     condition="$2"
1403     shift 2
1404     check_cpp_condition "$header" "$condition" "$@" || die "ERROR: $condition not satisfied"
1405 }
1406
1407 require_pkg_config(){
1408     log require_pkg_config "$@"
1409     pkg_version="$2"
1410     check_pkg_config "$@" || die "ERROR: $pkg_version not found using pkg-config$pkg_config_fail_message"
1411 }
1412
1413 hostcc_e(){
1414     eval printf '%s\\n' $HOSTCC_E
1415 }
1416
1417 hostcc_o(){
1418     eval printf '%s\\n' $HOSTCC_O
1419 }
1420
1421 check_host_cc(){
1422     log check_host_cc "$@"
1423     cat > $TMPC
1424     log_file $TMPC
1425     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1426 }
1427
1428 check_host_cpp(){
1429     log check_host_cpp "$@"
1430     cat > $TMPC
1431     log_file $TMPC
1432     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1433 }
1434
1435 check_host_cppflags(){
1436     log check_host_cppflags "$@"
1437     check_host_cpp "$@" <<EOF && append host_cppflags "$@"
1438 #include <stdlib.h>
1439 EOF
1440 }
1441
1442 check_host_cflags(){
1443     log check_host_cflags "$@"
1444     set -- $($host_cflags_filter "$@")
1445     check_host_cc "$@" <<EOF && append host_cflags "$@"
1446 int x;
1447 EOF
1448 }
1449
1450 check_host_cpp_condition(){
1451     log check_host_cpp_condition "$@"
1452     header=$1
1453     condition=$2
1454     shift 2
1455     check_host_cpp "$@" <<EOF
1456 #include <$header>
1457 #if !($condition)
1458 #error "unsatisfied condition: $condition"
1459 #endif
1460 EOF
1461 }
1462
1463 cp_if_changed(){
1464     cmp -s "$1" "$2" && { test "$quiet" != "yes" && echo "$2 is unchanged"; } && return
1465     mkdir -p "$(dirname $2)"
1466     cp -f "$1" "$2"
1467 }
1468
1469 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1470 # system-dependent things.
1471
1472 AVCODEC_COMPONENTS="
1473     bsfs
1474     decoders
1475     encoders
1476     hwaccels
1477     parsers
1478 "
1479
1480 AVDEVICE_COMPONENTS="
1481     indevs
1482     outdevs
1483 "
1484
1485 AVFILTER_COMPONENTS="
1486     filters
1487 "
1488
1489 AVFORMAT_COMPONENTS="
1490     demuxers
1491     muxers
1492     protocols
1493 "
1494
1495 COMPONENT_LIST="
1496     $AVCODEC_COMPONENTS
1497     $AVDEVICE_COMPONENTS
1498     $AVFILTER_COMPONENTS
1499     $AVFORMAT_COMPONENTS
1500 "
1501
1502 EXAMPLE_LIST="
1503     avio_dir_cmd_example
1504     avio_reading_example
1505     decode_audio_example
1506     decode_video_example
1507     demuxing_decoding_example
1508     encode_audio_example
1509     encode_video_example
1510     extract_mvs_example
1511     filter_audio_example
1512     filtering_audio_example
1513     filtering_video_example
1514     http_multiclient_example
1515     hw_decode_example
1516     metadata_example
1517     muxing_example
1518     qsvdec_example
1519     remuxing_example
1520     resampling_audio_example
1521     scaling_video_example
1522     transcode_aac_example
1523     transcoding_example
1524 "
1525
1526 EXTERNAL_AUTODETECT_LIBRARY_LIST="
1527     alsa
1528     appkit
1529     avfoundation
1530     bzlib
1531     coreimage
1532     iconv
1533     libxcb
1534     libxcb_shm
1535     libxcb_shape
1536     libxcb_xfixes
1537     lzma
1538     schannel
1539     sdl2
1540     securetransport
1541     sndio
1542     xlib
1543     zlib
1544 "
1545
1546 EXTERNAL_LIBRARY_GPL_LIST="
1547     avisynth
1548     frei0r
1549     libcdio
1550     librubberband
1551     libvidstab
1552     libx264
1553     libx265
1554     libxavs
1555     libxvid
1556 "
1557
1558 EXTERNAL_LIBRARY_NONFREE_LIST="
1559     decklink
1560     libndi_newtek
1561     libfdk_aac
1562     openssl
1563 "
1564
1565 EXTERNAL_LIBRARY_VERSION3_LIST="
1566     gmp
1567     libopencore_amrnb
1568     libopencore_amrwb
1569     libvmaf
1570     libvo_amrwbenc
1571     rkmpp
1572 "
1573
1574 EXTERNAL_LIBRARY_GPLV3_LIST="
1575     libsmbclient
1576 "
1577
1578 EXTERNAL_LIBRARY_LIST="
1579     $EXTERNAL_LIBRARY_GPL_LIST
1580     $EXTERNAL_LIBRARY_NONFREE_LIST
1581     $EXTERNAL_LIBRARY_VERSION3_LIST
1582     $EXTERNAL_LIBRARY_GPLV3_LIST
1583     chromaprint
1584     gcrypt
1585     gnutls
1586     jni
1587     ladspa
1588     libass
1589     libbluray
1590     libbs2b
1591     libcaca
1592     libcelt
1593     libdc1394
1594     libdrm
1595     libflite
1596     libfontconfig
1597     libfreetype
1598     libfribidi
1599     libgme
1600     libgsm
1601     libiec61883
1602     libilbc
1603     libjack
1604     libkvazaar
1605     libmodplug
1606     libmp3lame
1607     libmysofa
1608     libopencv
1609     libopenh264
1610     libopenjpeg
1611     libopenmpt
1612     libopus
1613     libpulse
1614     librsvg
1615     librtmp
1616     libshine
1617     libsmbclient
1618     libsnappy
1619     libsoxr
1620     libspeex
1621     libssh
1622     libtesseract
1623     libtheora
1624     libtwolame
1625     libv4l2
1626     libvorbis
1627     libvpx
1628     libwavpack
1629     libwebp
1630     libxml2
1631     libzimg
1632     libzmq
1633     libzvbi
1634     mediacodec
1635     openal
1636     opengl
1637 "
1638
1639 HWACCEL_AUTODETECT_LIBRARY_LIST="
1640     audiotoolbox
1641     crystalhd
1642     cuda
1643     cuvid
1644     d3d11va
1645     dxva2
1646     nvdec
1647     nvenc
1648     vaapi
1649     vdpau
1650     videotoolbox
1651     v4l2_m2m
1652     xvmc
1653 "
1654
1655 # catchall list of things that require external libs to link
1656 EXTRALIBS_LIST="
1657     cpu_init
1658     cws2fws
1659 "
1660
1661 HWACCEL_LIBRARY_NONFREE_LIST="
1662     cuda_sdk
1663     libnpp
1664 "
1665
1666 HWACCEL_LIBRARY_LIST="
1667     $HWACCEL_LIBRARY_NONFREE_LIST
1668     libmfx
1669     mmal
1670     omx
1671     opencl
1672 "
1673
1674 DOCUMENT_LIST="
1675     doc
1676     htmlpages
1677     manpages
1678     podpages
1679     txtpages
1680 "
1681
1682 FEATURE_LIST="
1683     ftrapv
1684     gray
1685     hardcoded_tables
1686     omx_rpi
1687     runtime_cpudetect
1688     safe_bitstream_reader
1689     shared
1690     small
1691     static
1692     swscale_alpha
1693 "
1694
1695 LIBRARY_LIST="
1696     avcodec
1697     avdevice
1698     avfilter
1699     avformat
1700     avresample
1701     avutil
1702     postproc
1703     swresample
1704     swscale
1705 "
1706
1707 LICENSE_LIST="
1708     gpl
1709     nonfree
1710     version3
1711 "
1712
1713 PROGRAM_LIST="
1714     ffplay
1715     ffprobe
1716     ffserver
1717     ffmpeg
1718 "
1719
1720 SUBSYSTEM_LIST="
1721     dct
1722     dwt
1723     error_resilience
1724     faan
1725     fast_unaligned
1726     fft
1727     lsp
1728     lzo
1729     mdct
1730     pixelutils
1731     network
1732     rdft
1733 "
1734
1735 # COMPONENT_LIST needs to come last to ensure correct dependency checking
1736 CONFIG_LIST="
1737     $DOCUMENT_LIST
1738     $EXAMPLE_LIST
1739     $EXTERNAL_LIBRARY_LIST
1740     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1741     $HWACCEL_LIBRARY_LIST
1742     $HWACCEL_AUTODETECT_LIBRARY_LIST
1743     $FEATURE_LIST
1744     $LICENSE_LIST
1745     $LIBRARY_LIST
1746     $PROGRAM_LIST
1747     $SUBSYSTEM_LIST
1748     autodetect
1749     fontconfig
1750     linux_perf
1751     memory_poisoning
1752     neon_clobber_test
1753     ossfuzz
1754     pic
1755     thumb
1756     valgrind_backtrace
1757     xmm_clobber_test
1758     $COMPONENT_LIST
1759 "
1760
1761 THREADS_LIST="
1762     pthreads
1763     os2threads
1764     w32threads
1765 "
1766
1767 ATOMICS_LIST="
1768     atomics_gcc
1769     atomics_suncc
1770     atomics_win32
1771 "
1772
1773 AUTODETECT_LIBS="
1774     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1775     $HWACCEL_AUTODETECT_LIBRARY_LIST
1776     $THREADS_LIST
1777 "
1778
1779 ARCH_LIST="
1780     aarch64
1781     alpha
1782     arm
1783     avr32
1784     avr32_ap
1785     avr32_uc
1786     bfin
1787     ia64
1788     m68k
1789     mips
1790     mips64
1791     parisc
1792     ppc
1793     ppc64
1794     s390
1795     sh4
1796     sparc
1797     sparc64
1798     tilegx
1799     tilepro
1800     tomi
1801     x86
1802     x86_32
1803     x86_64
1804 "
1805
1806 ARCH_EXT_LIST_ARM="
1807     armv5te
1808     armv6
1809     armv6t2
1810     armv8
1811     neon
1812     vfp
1813     vfpv3
1814     setend
1815 "
1816
1817 ARCH_EXT_LIST_MIPS="
1818     mipsfpu
1819     mips32r2
1820     mips32r5
1821     mips64r2
1822     mips32r6
1823     mips64r6
1824     mipsdsp
1825     mipsdspr2
1826     msa
1827 "
1828
1829 ARCH_EXT_LIST_LOONGSON="
1830     loongson2
1831     loongson3
1832     mmi
1833 "
1834
1835 ARCH_EXT_LIST_X86_SIMD="
1836     aesni
1837     amd3dnow
1838     amd3dnowext
1839     avx
1840     avx2
1841     fma3
1842     fma4
1843     mmx
1844     mmxext
1845     sse
1846     sse2
1847     sse3
1848     sse4
1849     sse42
1850     ssse3
1851     xop
1852 "
1853
1854 ARCH_EXT_LIST_PPC="
1855     altivec
1856     dcbzl
1857     ldbrx
1858     power8
1859     ppc4xx
1860     vsx
1861 "
1862
1863 ARCH_EXT_LIST_X86="
1864     $ARCH_EXT_LIST_X86_SIMD
1865     cpunop
1866     i686
1867 "
1868
1869 ARCH_EXT_LIST="
1870     $ARCH_EXT_LIST_ARM
1871     $ARCH_EXT_LIST_PPC
1872     $ARCH_EXT_LIST_X86
1873     $ARCH_EXT_LIST_MIPS
1874     $ARCH_EXT_LIST_LOONGSON
1875 "
1876
1877 ARCH_FEATURES="
1878     aligned_stack
1879     fast_64bit
1880     fast_clz
1881     fast_cmov
1882     local_aligned
1883     simd_align_16
1884     simd_align_32
1885 "
1886
1887 BUILTIN_LIST="
1888     atomic_cas_ptr
1889     machine_rw_barrier
1890     MemoryBarrier
1891     mm_empty
1892     rdtsc
1893     sarestart
1894     sem_timedwait
1895     sync_val_compare_and_swap
1896 "
1897 HAVE_LIST_CMDLINE="
1898     inline_asm
1899     symver
1900     x86asm
1901 "
1902
1903 HAVE_LIST_PUB="
1904     bigendian
1905     fast_unaligned
1906 "
1907
1908 HEADERS_LIST="
1909     arpa_inet_h
1910     asm_types_h
1911     cdio_paranoia_h
1912     cdio_paranoia_paranoia_h
1913     cuda_h
1914     dispatch_dispatch_h
1915     dev_bktr_ioctl_bt848_h
1916     dev_bktr_ioctl_meteor_h
1917     dev_ic_bt8xx_h
1918     dev_video_bktr_ioctl_bt848_h
1919     dev_video_meteor_ioctl_meteor_h
1920     direct_h
1921     dirent_h
1922     dxgidebug_h
1923     dxva_h
1924     ES2_gl_h
1925     gsm_h
1926     io_h
1927     machine_ioctl_bt848_h
1928     machine_ioctl_meteor_h
1929     malloc_h
1930     opencv2_core_core_c_h
1931     OpenGL_gl3_h
1932     poll_h
1933     sys_param_h
1934     sys_resource_h
1935     sys_select_h
1936     sys_soundcard_h
1937     sys_time_h
1938     sys_un_h
1939     sys_videoio_h
1940     termios_h
1941     udplite_h
1942     unistd_h
1943     valgrind_valgrind_h
1944     windows_h
1945     winsock2_h
1946 "
1947
1948 INTRINSICS_LIST="
1949     intrinsics_neon
1950 "
1951
1952 COMPLEX_FUNCS="
1953     cabs
1954     cexp
1955 "
1956
1957 MATH_FUNCS="
1958     atanf
1959     atan2f
1960     cbrt
1961     cbrtf
1962     copysign
1963     cosf
1964     erf
1965     exp2
1966     exp2f
1967     expf
1968     hypot
1969     isfinite
1970     isinf
1971     isnan
1972     ldexpf
1973     llrint
1974     llrintf
1975     log2
1976     log2f
1977     log10f
1978     lrint
1979     lrintf
1980     powf
1981     rint
1982     round
1983     roundf
1984     sinf
1985     trunc
1986     truncf
1987 "
1988
1989 SYSTEM_FEATURES="
1990     atomics_native
1991     dos_paths
1992     libc_msvcrt
1993     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
1994     section_data_rel_ro
1995     threads
1996     uwp
1997     winrt
1998 "
1999
2000 SYSTEM_FUNCS="
2001     access
2002     aligned_malloc
2003     arc4random
2004     clock_gettime
2005     closesocket
2006     CommandLineToArgvW
2007     fcntl
2008     getaddrinfo
2009     gethrtime
2010     getopt
2011     GetProcessAffinityMask
2012     GetProcessMemoryInfo
2013     GetProcessTimes
2014     getrusage
2015     GetSystemTimeAsFileTime
2016     gettimeofday
2017     glob
2018     glXGetProcAddress
2019     gmtime_r
2020     inet_aton
2021     isatty
2022     kbhit
2023     localtime_r
2024     lstat
2025     lzo1x_999_compress
2026     mach_absolute_time
2027     MapViewOfFile
2028     memalign
2029     mkstemp
2030     mmap
2031     mprotect
2032     nanosleep
2033     PeekNamedPipe
2034     posix_memalign
2035     pthread_cancel
2036     sched_getaffinity
2037     SecItemImport
2038     SetConsoleTextAttribute
2039     SetConsoleCtrlHandler
2040     setmode
2041     setrlimit
2042     Sleep
2043     strerror_r
2044     sysconf
2045     sysctl
2046     usleep
2047     UTGetOSTypeFromString
2048     VirtualAlloc
2049     wglGetProcAddress
2050 "
2051
2052 SYSTEM_LIBRARIES="
2053     vaapi_drm
2054     vaapi_x11
2055     vdpau_x11
2056     wincrypt
2057 "
2058
2059 TOOLCHAIN_FEATURES="
2060     as_arch_directive
2061     as_fpu_directive
2062     as_func
2063     as_object_arch
2064     asm_mod_q
2065     blocks_extension
2066     ebp_available
2067     ebx_available
2068     gnu_as
2069     gnu_windres
2070     ibm_asm
2071     inline_asm_direct_symbol_refs
2072     inline_asm_labels
2073     inline_asm_nonlocal_labels
2074     pragma_deprecated
2075     rsync_contimeout
2076     symver_asm_label
2077     symver_gnu_asm
2078     vfp_args
2079     xform_asm
2080     xmm_clobbers
2081 "
2082
2083 TYPES_LIST="
2084     CONDITION_VARIABLE_Ptr
2085     kCMVideoCodecType_HEVC
2086     socklen_t
2087     struct_addrinfo
2088     struct_group_source_req
2089     struct_ip_mreq_source
2090     struct_ipv6_mreq
2091     struct_msghdr_msg_flags
2092     struct_pollfd
2093     struct_rusage_ru_maxrss
2094     struct_sctp_event_subscribe
2095     struct_sockaddr_in6
2096     struct_sockaddr_sa_len
2097     struct_sockaddr_storage
2098     struct_stat_st_mtim_tv_nsec
2099     struct_v4l2_frmivalenum_discrete
2100 "
2101
2102 HAVE_LIST="
2103     $ARCH_EXT_LIST
2104     $(add_suffix _external $ARCH_EXT_LIST)
2105     $(add_suffix _inline   $ARCH_EXT_LIST)
2106     $ARCH_FEATURES
2107     $ATOMICS_LIST
2108     $BUILTIN_LIST
2109     $COMPLEX_FUNCS
2110     $HAVE_LIST_CMDLINE
2111     $HAVE_LIST_PUB
2112     $HEADERS_LIST
2113     $INTRINSICS_LIST
2114     $MATH_FUNCS
2115     $SYSTEM_FEATURES
2116     $SYSTEM_FUNCS
2117     $SYSTEM_LIBRARIES
2118     $THREADS_LIST
2119     $TOOLCHAIN_FEATURES
2120     $TYPES_LIST
2121     makeinfo
2122     makeinfo_html
2123     opencl_dxva2
2124     opencl_vaapi_beignet
2125     opencl_vaapi_intel_media
2126     perl
2127     pod2man
2128     texi2html
2129 "
2130
2131 # options emitted with CONFIG_ prefix but not available on the command line
2132 CONFIG_EXTRA="
2133     aandcttables
2134     ac3dsp
2135     adts_header
2136     audio_frame_queue
2137     audiodsp
2138     blockdsp
2139     bswapdsp
2140     cabac
2141     cbs
2142     cbs_h264
2143     cbs_h265
2144     cbs_mpeg2
2145     dirac_parse
2146     dvprofile
2147     exif
2148     faandct
2149     faanidct
2150     fdctdsp
2151     flacdsp
2152     fmtconvert
2153     frame_thread_encoder
2154     g722dsp
2155     golomb
2156     gplv3
2157     h263dsp
2158     h264chroma
2159     h264dsp
2160     h264parse
2161     h264pred
2162     h264qpel
2163     hevcparse
2164     hpeldsp
2165     huffman
2166     huffyuvdsp
2167     huffyuvencdsp
2168     idctdsp
2169     iirfilter
2170     mdct15
2171     intrax8
2172     iso_media
2173     ividsp
2174     jpegtables
2175     lgplv3
2176     libx262
2177     llauddsp
2178     llviddsp
2179     llvidencdsp
2180     lpc
2181     lzf
2182     me_cmp
2183     mpeg_er
2184     mpegaudio
2185     mpegaudiodsp
2186     mpegaudioheader
2187     mpegvideo
2188     mpegvideoenc
2189     mss34dsp
2190     pixblockdsp
2191     qpeldsp
2192     qsv
2193     qsvdec
2194     qsvenc
2195     qsvvpp
2196     rangecoder
2197     riffdec
2198     riffenc
2199     rtpdec
2200     rtpenc_chain
2201     rv34dsp
2202     sinewin
2203     snappy
2204     srtp
2205     startcode
2206     texturedsp
2207     texturedspenc
2208     tpeldsp
2209     vaapi_1
2210     vaapi_encode
2211     vc1dsp
2212     videodsp
2213     vp3dsp
2214     vp56dsp
2215     vp8dsp
2216     wma_freqs
2217     wmv2dsp
2218 "
2219
2220 CMDLINE_SELECT="
2221     $ARCH_EXT_LIST
2222     $CONFIG_LIST
2223     $HAVE_LIST_CMDLINE
2224     $THREADS_LIST
2225     asm
2226     cross_compile
2227     debug
2228     extra_warnings
2229     logging
2230     lto
2231     optimizations
2232     rpath
2233     stripping
2234 "
2235
2236 PATHS_LIST="
2237     bindir
2238     datadir
2239     docdir
2240     incdir
2241     libdir
2242     mandir
2243     pkgconfigdir
2244     prefix
2245     shlibdir
2246     install_name_dir
2247 "
2248
2249 CMDLINE_SET="
2250     $PATHS_LIST
2251     ar
2252     arch
2253     as
2254     assert_level
2255     build_suffix
2256     cc
2257     objcc
2258     cpu
2259     cross_prefix
2260     custom_allocator
2261     cxx
2262     dep_cc
2263     doxygen
2264     env
2265     extra_version
2266     gas
2267     host_cc
2268     host_cflags
2269     host_extralibs
2270     host_ld
2271     host_ldflags
2272     host_os
2273     ignore_tests
2274     install
2275     ld
2276     ln_s
2277     logfile
2278     malloc_prefix
2279     nm
2280     optflags
2281     nvccflags
2282     pkg_config
2283     pkg_config_flags
2284     progs_suffix
2285     random_seed
2286     ranlib
2287     samples
2288     strip
2289     sws_max_filter_size
2290     sysinclude
2291     sysroot
2292     target_exec
2293     target_os
2294     target_path
2295     target_samples
2296     tempprefix
2297     toolchain
2298     valgrind
2299     x86asmexe
2300 "
2301
2302 CMDLINE_APPEND="
2303     extra_cflags
2304     extra_cxxflags
2305     extra_objcflags
2306     host_cppflags
2307 "
2308
2309 # code dependency declarations
2310
2311 # architecture extensions
2312
2313 armv5te_deps="arm"
2314 armv6_deps="arm"
2315 armv6t2_deps="arm"
2316 armv8_deps="aarch64"
2317 neon_deps_any="aarch64 arm"
2318 intrinsics_neon_deps="neon"
2319 vfp_deps_any="aarch64 arm"
2320 vfpv3_deps="vfp"
2321 setend_deps="arm"
2322
2323 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2324
2325 altivec_deps="ppc"
2326 dcbzl_deps="ppc"
2327 ldbrx_deps="ppc"
2328 ppc4xx_deps="ppc"
2329 vsx_deps="altivec"
2330 power8_deps="vsx"
2331
2332 loongson2_deps="mips"
2333 loongson3_deps="mips"
2334 mips32r2_deps="mips"
2335 mips32r5_deps="mips"
2336 mips32r6_deps="mips"
2337 mips64r2_deps="mips"
2338 mips64r6_deps="mips"
2339 mipsfpu_deps="mips"
2340 mipsdsp_deps="mips"
2341 mipsdspr2_deps="mips"
2342 mmi_deps="mips"
2343 msa_deps="mipsfpu"
2344
2345 cpunop_deps="i686"
2346 x86_64_select="i686"
2347 x86_64_suggest="fast_cmov"
2348
2349 amd3dnow_deps="mmx"
2350 amd3dnowext_deps="amd3dnow"
2351 i686_deps="x86"
2352 mmx_deps="x86"
2353 mmxext_deps="mmx"
2354 sse_deps="mmxext"
2355 sse2_deps="sse"
2356 sse3_deps="sse2"
2357 ssse3_deps="sse3"
2358 sse4_deps="ssse3"
2359 sse42_deps="sse4"
2360 aesni_deps="sse42"
2361 avx_deps="sse42"
2362 xop_deps="avx"
2363 fma3_deps="avx"
2364 fma4_deps="avx"
2365 avx2_deps="avx"
2366
2367 mmx_external_deps="x86asm"
2368 mmx_inline_deps="inline_asm x86"
2369 mmx_suggest="mmx_external mmx_inline"
2370
2371 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2372     eval dep=\$${ext}_deps
2373     eval ${ext}_external_deps='"${dep}_external"'
2374     eval ${ext}_inline_deps='"${dep}_inline"'
2375     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2376 done
2377
2378 aligned_stack_if_any="aarch64 ppc x86"
2379 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2380 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2381 fast_unaligned_if_any="aarch64 ppc x86"
2382 simd_align_16_if_any="altivec neon sse"
2383 simd_align_32_if_any="avx"
2384
2385 # system capabilities
2386 symver_if_any="symver_asm_label symver_gnu_asm"
2387 valgrind_backtrace_conflict="optimizations"
2388 valgrind_backtrace_deps="valgrind_valgrind_h"
2389
2390 # threading support
2391 atomics_gcc_if="sync_val_compare_and_swap"
2392 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2393 atomics_win32_if="MemoryBarrier"
2394 atomics_native_if_any="$ATOMICS_LIST"
2395 w32threads_deps="atomics_native"
2396 threads_if_any="$THREADS_LIST"
2397
2398 # subsystems
2399 cbs_h264_select="cbs golomb"
2400 cbs_h265_select="cbs golomb"
2401 cbs_mpeg2_select="cbs"
2402 dct_select="rdft"
2403 dirac_parse_select="golomb"
2404 error_resilience_select="me_cmp"
2405 faandct_deps="faan"
2406 faandct_select="fdctdsp"
2407 faanidct_deps="faan"
2408 faanidct_select="idctdsp"
2409 h264dsp_select="startcode"
2410 hevcparse_select="golomb"
2411 frame_thread_encoder_deps="encoders threads"
2412 intrax8_select="blockdsp idctdsp"
2413 mdct_select="fft"
2414 mdct15_select="fft"
2415 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2416 mpeg_er_select="error_resilience"
2417 mpegaudio_select="mpegaudiodsp mpegaudioheader"
2418 mpegaudiodsp_select="dct"
2419 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2420 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
2421 vc1dsp_select="h264chroma qpeldsp startcode"
2422 rdft_select="fft"
2423
2424 # decoders / encoders
2425 aac_decoder_select="adts_header mdct15 mdct sinewin"
2426 aac_fixed_decoder_select="mdct sinewin"
2427 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2428 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2429 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2430 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2431 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2432 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2433 adpcm_g722_decoder_select="g722dsp"
2434 adpcm_g722_encoder_select="g722dsp"
2435 aic_decoder_select="golomb idctdsp"
2436 alac_encoder_select="lpc"
2437 als_decoder_select="bswapdsp"
2438 amrnb_decoder_select="lsp"
2439 amrwb_decoder_select="lsp"
2440 amv_decoder_select="sp5x_decoder exif"
2441 amv_encoder_select="aandcttables jpegtables mpegvideoenc"
2442 ape_decoder_select="bswapdsp llauddsp"
2443 apng_decoder_deps="zlib"
2444 apng_encoder_deps="zlib"
2445 apng_encoder_select="llvidencdsp"
2446 aptx_decoder_select="audio_frame_queue"
2447 aptx_encoder_select="audio_frame_queue"
2448 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2449 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2450 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2451 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2452 atrac1_decoder_select="mdct sinewin"
2453 atrac3_decoder_select="mdct"
2454 atrac3p_decoder_select="mdct sinewin"
2455 avrn_decoder_select="exif jpegtables"
2456 bink_decoder_select="blockdsp hpeldsp"
2457 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2458 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2459 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2460 clearvideo_decoder_select="idctdsp"
2461 cllc_decoder_select="bswapdsp"
2462 comfortnoise_encoder_select="lpc"
2463 cook_decoder_select="audiodsp mdct sinewin"
2464 cscd_decoder_select="lzo"
2465 cscd_decoder_suggest="zlib"
2466 dca_decoder_select="mdct"
2467 dds_decoder_select="texturedsp"
2468 dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
2469 dnxhd_decoder_select="blockdsp idctdsp"
2470 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2471 dolby_e_decoder_select="mdct"
2472 dvvideo_decoder_select="dvprofile idctdsp"
2473 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2474 dxa_decoder_deps="zlib"
2475 dxv_decoder_select="lzf texturedsp"
2476 eac3_decoder_select="ac3_decoder"
2477 eac3_encoder_select="ac3_encoder"
2478 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2479 eatgq_decoder_select="aandcttables"
2480 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2481 exr_decoder_deps="zlib"
2482 ffv1_decoder_select="rangecoder"
2483 ffv1_encoder_select="rangecoder"
2484 ffvhuff_decoder_select="huffyuv_decoder"
2485 ffvhuff_encoder_select="huffyuv_encoder"
2486 fic_decoder_select="golomb"
2487 flac_decoder_select="flacdsp"
2488 flac_encoder_select="bswapdsp flacdsp lpc"
2489 flashsv2_decoder_deps="zlib"
2490 flashsv2_encoder_deps="zlib"
2491 flashsv_decoder_deps="zlib"
2492 flashsv_encoder_deps="zlib"
2493 flv_decoder_select="h263_decoder"
2494 flv_encoder_select="h263_encoder"
2495 fourxm_decoder_select="blockdsp bswapdsp"
2496 fraps_decoder_select="bswapdsp huffman"
2497 g2m_decoder_deps="zlib"
2498 g2m_decoder_select="blockdsp idctdsp jpegtables"
2499 g729_decoder_select="audiodsp"
2500 h261_decoder_select="mpegvideo"
2501 h261_encoder_select="aandcttables mpegvideoenc"
2502 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2503 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2504 h263i_decoder_select="h263_decoder"
2505 h263p_decoder_select="h263_decoder"
2506 h263p_encoder_select="h263_encoder"
2507 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
2508 h264_decoder_suggest="error_resilience"
2509 hap_decoder_select="snappy texturedsp"
2510 hap_encoder_deps="libsnappy"
2511 hap_encoder_select="texturedspenc"
2512 hevc_decoder_select="bswapdsp cabac golomb hevcparse videodsp"
2513 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2514 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llvidencdsp"
2515 iac_decoder_select="imc_decoder"
2516 imc_decoder_select="bswapdsp fft mdct sinewin"
2517 indeo3_decoder_select="hpeldsp"
2518 indeo4_decoder_select="ividsp"
2519 indeo5_decoder_select="ividsp"
2520 interplay_video_decoder_select="hpeldsp"
2521 jpegls_decoder_select="mjpeg_decoder"
2522 jv_decoder_select="blockdsp"
2523 lagarith_decoder_select="llviddsp"
2524 ljpeg_encoder_select="aandcttables idctdsp jpegtables mpegvideoenc"
2525 magicyuv_decoder_select="llviddsp"
2526 magicyuv_encoder_select="llvidencdsp"
2527 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2528 metasound_decoder_select="lsp mdct sinewin"
2529 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2530 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2531 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2532 mjpegb_decoder_select="mjpeg_decoder"
2533 mlp_decoder_select="mlp_parser"
2534 mlp_encoder_select="lpc"
2535 motionpixels_decoder_select="bswapdsp"
2536 mp1_decoder_select="mpegaudio"
2537 mp1float_decoder_select="mpegaudio"
2538 mp2_decoder_select="mpegaudio"
2539 mp2float_decoder_select="mpegaudio"
2540 mp3_decoder_select="mpegaudio"
2541 mp3adu_decoder_select="mpegaudio"
2542 mp3adufloat_decoder_select="mpegaudio"
2543 mp3float_decoder_select="mpegaudio"
2544 mp3on4_decoder_select="mpegaudio"
2545 mp3on4float_decoder_select="mpegaudio"
2546 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2547 mpc8_decoder_select="mpegaudiodsp"
2548 mpegvideo_decoder_select="mpegvideo"
2549 mpeg1video_decoder_select="mpegvideo"
2550 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2551 mpeg2video_decoder_select="mpegvideo"
2552 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2553 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2554 mpeg4_encoder_select="h263_encoder"
2555 msa1_decoder_select="mss34dsp"
2556 mscc_decoder_deps="zlib"
2557 msmpeg4v1_decoder_select="h263_decoder"
2558 msmpeg4v2_decoder_select="h263_decoder"
2559 msmpeg4v2_encoder_select="h263_encoder"
2560 msmpeg4v3_decoder_select="h263_decoder"
2561 msmpeg4v3_encoder_select="h263_encoder"
2562 mss2_decoder_select="mpegvideo qpeldsp vc1_decoder"
2563 mts2_decoder_select="mss34dsp"
2564 mxpeg_decoder_select="mjpeg_decoder"
2565 nellymoser_decoder_select="mdct sinewin"
2566 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2567 nuv_decoder_select="idctdsp lzo"
2568 on2avc_decoder_select="mdct"
2569 opus_decoder_deps="swresample"
2570 opus_decoder_select="mdct15"
2571 opus_encoder_select="audio_frame_queue mdct15"
2572 png_decoder_deps="zlib"
2573 png_encoder_deps="zlib"
2574 png_encoder_select="llvidencdsp"
2575 prores_decoder_select="blockdsp idctdsp"
2576 prores_encoder_select="fdctdsp"
2577 qcelp_decoder_select="lsp"
2578 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2579 ra_144_decoder_select="audiodsp"
2580 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2581 ralf_decoder_select="golomb"
2582 rawvideo_decoder_select="bswapdsp"
2583 rscc_decoder_deps="zlib"
2584 rtjpeg_decoder_select="me_cmp"
2585 rv10_decoder_select="h263_decoder"
2586 rv10_encoder_select="h263_encoder"
2587 rv20_decoder_select="h263_decoder"
2588 rv20_encoder_select="h263_encoder"
2589 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2590 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2591 screenpresso_decoder_deps="zlib"
2592 shorten_decoder_select="bswapdsp"
2593 sipr_decoder_select="lsp"
2594 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2595 snow_encoder_select="aandcttables dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2596 sonic_decoder_select="golomb rangecoder"
2597 sonic_encoder_select="golomb rangecoder"
2598 sonic_ls_encoder_select="golomb rangecoder"
2599 sp5x_decoder_select="mjpeg_decoder"
2600 srgc_decoder_deps="zlib"
2601 svq1_decoder_select="hpeldsp"
2602 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2603 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2604 svq3_decoder_suggest="zlib"
2605 tak_decoder_select="audiodsp"
2606 tdsc_decoder_deps="zlib"
2607 tdsc_decoder_select="mjpeg_decoder"
2608 theora_decoder_select="vp3_decoder"
2609 thp_decoder_select="mjpeg_decoder"
2610 tiff_decoder_suggest="zlib lzma"
2611 tiff_encoder_suggest="zlib"
2612 truehd_decoder_select="mlp_parser"
2613 truehd_encoder_select="lpc"
2614 truemotion2_decoder_select="bswapdsp"
2615 truespeech_decoder_select="bswapdsp"
2616 tscc_decoder_deps="zlib"
2617 twinvq_decoder_select="mdct lsp sinewin"
2618 txd_decoder_select="texturedsp"
2619 utvideo_decoder_select="bswapdsp llviddsp"
2620 utvideo_encoder_select="bswapdsp huffman llvidencdsp"
2621 vble_decoder_select="llviddsp"
2622 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 mpegvideo vc1dsp"
2623 vc1image_decoder_select="vc1_decoder"
2624 vorbis_decoder_select="mdct"
2625 vorbis_encoder_select="mdct"
2626 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2627 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2628 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2629 vp6a_decoder_select="vp6_decoder"
2630 vp6f_decoder_select="vp6_decoder"
2631 vp7_decoder_select="h264pred videodsp vp8dsp"
2632 vp8_decoder_select="h264pred videodsp vp8dsp"
2633 vp9_decoder_select="videodsp vp9_parser"
2634 webp_decoder_select="vp8_decoder exif"
2635 wmalossless_decoder_select="llauddsp"
2636 wmapro_decoder_select="mdct sinewin wma_freqs"
2637 wmav1_decoder_select="mdct sinewin wma_freqs"
2638 wmav1_encoder_select="mdct sinewin wma_freqs"
2639 wmav2_decoder_select="mdct sinewin wma_freqs"
2640 wmav2_encoder_select="mdct sinewin wma_freqs"
2641 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2642 wmv1_decoder_select="h263_decoder"
2643 wmv1_encoder_select="h263_encoder"
2644 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2645 wmv2_encoder_select="h263_encoder wmv2dsp"
2646 wmv3_decoder_select="vc1_decoder"
2647 wmv3image_decoder_select="wmv3_decoder"
2648 xma1_decoder_select="wmapro_decoder"
2649 xma2_decoder_select="wmapro_decoder"
2650 zerocodec_decoder_deps="zlib"
2651 zlib_decoder_deps="zlib"
2652 zlib_encoder_deps="zlib"
2653 zmbv_decoder_deps="zlib"
2654 zmbv_encoder_deps="zlib"
2655
2656 # hardware accelerators
2657 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2658 cuda_deps_any="libdl LoadLibrary"
2659 cuvid_deps="cuda"
2660 d3d11va_deps="dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2661 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode ole32 user32"
2662 nvdec_deps="cuda"
2663 videotoolbox_hwaccel_deps="videotoolbox pthreads"
2664 videotoolbox_hwaccel_extralibs="-framework QuartzCore"
2665 xvmc_deps="X11_extensions_XvMClib_h"
2666
2667 h263_vaapi_hwaccel_deps="vaapi"
2668 h263_vaapi_hwaccel_select="h263_decoder"
2669 h263_videotoolbox_hwaccel_deps="videotoolbox"
2670 h263_videotoolbox_hwaccel_select="h263_decoder"
2671 h264_cuvid_hwaccel_select="h264_cuvid_decoder"
2672 h264_d3d11va_hwaccel_deps="d3d11va"
2673 h264_d3d11va_hwaccel_select="h264_decoder"
2674 h264_d3d11va2_hwaccel_deps="d3d11va"
2675 h264_d3d11va2_hwaccel_select="h264_decoder"
2676 h264_dxva2_hwaccel_deps="dxva2"
2677 h264_dxva2_hwaccel_select="h264_decoder"
2678 h264_mediacodec_hwaccel_deps="mediacodec"
2679 h264_mmal_hwaccel_deps="mmal"
2680 h264_nvdec_hwaccel_deps="nvdec"
2681 h264_nvdec_hwaccel_select="h264_decoder"
2682 h264_qsv_hwaccel_deps="libmfx"
2683 h264_vaapi_hwaccel_deps="vaapi"
2684 h264_vaapi_hwaccel_select="h264_decoder"
2685 h264_vdpau_hwaccel_deps="vdpau"
2686 h264_vdpau_hwaccel_select="h264_decoder"
2687 h264_videotoolbox_hwaccel_deps="videotoolbox"
2688 h264_videotoolbox_hwaccel_select="h264_decoder"
2689 hevc_cuvid_hwaccel_select="hevc_cuvid_decoder"
2690 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2691 hevc_d3d11va_hwaccel_select="hevc_decoder"
2692 hevc_mediacodec_hwaccel_deps="mediacodec"
2693 hevc_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2694 hevc_d3d11va2_hwaccel_select="hevc_decoder"
2695 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2696 hevc_dxva2_hwaccel_select="hevc_decoder"
2697 hevc_nvdec_hwaccel_deps="nvdec"
2698 hevc_nvdec_hwaccel_select="hevc_decoder"
2699 hevc_qsv_hwaccel_deps="libmfx"
2700 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2701 hevc_vaapi_hwaccel_select="hevc_decoder"
2702 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2703 hevc_vdpau_hwaccel_select="hevc_decoder"
2704 hevc_videotoolbox_hwaccel_deps="videotoolbox"
2705 hevc_videotoolbox_hwaccel_select="hevc_decoder"
2706 mjpeg_cuvid_hwaccel_select="mjpeg_cuvid_decoder"
2707 mpeg_xvmc_hwaccel_deps="xvmc"
2708 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2709 mpeg1_cuvid_hwaccel_select="mpeg1_cuvid_decoder"
2710 mpeg1_nvdec_hwaccel_deps="nvdec"
2711 mpeg1_nvdec_hwaccel_select="mpeg1video_decoder"
2712 mpeg1_vdpau_hwaccel_deps="vdpau"
2713 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2714 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2715 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2716 mpeg1_xvmc_hwaccel_deps="xvmc"
2717 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2718 mpeg2_cuvid_hwaccel_select="mpeg2_cuvid_decoder"
2719 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2720 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2721 mpeg2_d3d11va2_hwaccel_deps="d3d11va"
2722 mpeg2_d3d11va2_hwaccel_select="mpeg2video_decoder"
2723 mpeg2_dxva2_hwaccel_deps="dxva2"
2724 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2725 mpeg2_mediacodec_hwaccel_deps="mediacodec"
2726 mpeg2_mmal_hwaccel_deps="mmal"
2727 mpeg2_nvdec_hwaccel_deps="nvdec"
2728 mpeg2_nvdec_hwaccel_select="mpeg2video_decoder"
2729 mpeg2_qsv_hwaccel_deps="libmfx"
2730 mpeg2_vaapi_hwaccel_deps="vaapi"
2731 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2732 mpeg2_vdpau_hwaccel_deps="vdpau"
2733 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2734 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2735 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2736 mpeg2_xvmc_hwaccel_deps="xvmc"
2737 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2738 mpeg4_cuvid_hwaccel_select="mpeg4_cuvid_decoder"
2739 mpeg4_mediacodec_hwaccel_deps="mediacodec"
2740 mpeg4_mmal_hwaccel_deps="mmal"
2741 mpeg4_nvdec_hwaccel_deps="nvdec"
2742 mpeg4_nvdec_hwaccel_select="mpeg4_decoder"
2743 mpeg4_vaapi_hwaccel_deps="vaapi"
2744 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2745 mpeg4_vdpau_hwaccel_deps="vdpau"
2746 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2747 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2748 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2749 vc1_cuvid_hwaccel_select="vc1_cuvid_decoder"
2750 vc1_d3d11va_hwaccel_deps="d3d11va"
2751 vc1_d3d11va_hwaccel_select="vc1_decoder"
2752 vc1_d3d11va2_hwaccel_deps="d3d11va"
2753 vc1_d3d11va2_hwaccel_select="vc1_decoder"
2754 vc1_dxva2_hwaccel_deps="dxva2"
2755 vc1_dxva2_hwaccel_select="vc1_decoder"
2756 vc1_mmal_hwaccel_deps="mmal"
2757 vc1_nvdec_hwaccel_deps="nvdec"
2758 vc1_nvdec_hwaccel_select="vc1_decoder"
2759 vc1_qsv_hwaccel_deps="libmfx"
2760 vc1_vaapi_hwaccel_deps="vaapi"
2761 vc1_vaapi_hwaccel_select="vc1_decoder"
2762 vc1_vdpau_hwaccel_deps="vdpau"
2763 vc1_vdpau_hwaccel_select="vc1_decoder"
2764 vp8_cuvid_hwaccel_select="vp8_cuvid_decoder"
2765 vp9_cuvid_hwaccel_select="vp9_cuvid_decoder"
2766 vp8_mediacodec_hwaccel_deps="mediacodec"
2767 vp8_qsv_hwaccel_deps="libmfx"
2768 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2769 vp9_d3d11va_hwaccel_select="vp9_decoder"
2770 vp9_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2771 vp9_d3d11va2_hwaccel_select="vp9_decoder"
2772 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
2773 vp9_dxva2_hwaccel_select="vp9_decoder"
2774 vp9_mediacodec_hwaccel_deps="mediacodec"
2775 vp9_nvdec_hwaccel_deps="nvdec"
2776 vp9_nvdec_hwaccel_select="vp9_decoder"
2777 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9_bit_depth"
2778 vp9_vaapi_hwaccel_select="vp9_decoder"
2779 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2780 wmv3_d3d11va2_hwaccel_select="vc1_d3d11va2_hwaccel"
2781 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2782 wmv3_nvdec_hwaccel_select="vc1_nvdec_hwaccel"
2783 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2784 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2785
2786 # hardware-accelerated codecs
2787 omx_deps="libdl pthreads"
2788 omx_rpi_select="omx"
2789 qsv_deps="libmfx"
2790 qsvdec_select="qsv"
2791 qsvenc_select="qsv"
2792 qsvvpp_select="qsv"
2793 vaapi_encode_deps="vaapi"
2794 v4l2_m2m_deps_any="linux_videodev2_h"
2795
2796 hwupload_cuda_filter_deps="cuda"
2797 scale_npp_filter_deps="cuda libnpp"
2798 scale_cuda_filter_deps="cuda_sdk"
2799 thumbnail_cuda_filter_deps="cuda_sdk"
2800
2801 nvenc_deps="cuda"
2802 nvenc_deps_any="libdl LoadLibrary"
2803 nvenc_encoder_deps="nvenc"
2804
2805 h263_v4l2m2m_decoder_deps="v4l2_m2m h263_v4l2_m2m"
2806 h263_v4l2m2m_encoder_deps="v4l2_m2m h263_v4l2_m2m"
2807 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2808 h264_cuvid_decoder_deps="cuvid"
2809 h264_cuvid_decoder_select="h264_mp4toannexb_bsf"
2810 h264_mediacodec_decoder_deps="mediacodec"
2811 h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
2812 h264_mmal_decoder_deps="mmal"
2813 h264_nvenc_encoder_deps="nvenc"
2814 h264_omx_encoder_deps="omx"
2815 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2816 h264_qsv_encoder_select="qsvenc"
2817 h264_rkmpp_decoder_deps="rkmpp"
2818 h264_rkmpp_decoder_select="h264_mp4toannexb_bsf"
2819 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2820 h264_vaapi_encoder_select="cbs_h264 vaapi_encode"
2821 h264_v4l2m2m_decoder_deps="v4l2_m2m h264_v4l2_m2m"
2822 h264_v4l2m2m_encoder_deps="v4l2_m2m h264_v4l2_m2m"
2823 hevc_cuvid_decoder_deps="cuvid"
2824 hevc_cuvid_decoder_select="hevc_mp4toannexb_bsf"
2825 hevc_mediacodec_decoder_deps="mediacodec"
2826 hevc_mediacodec_decoder_select="hevc_mp4toannexb_bsf hevc_parser"
2827 hevc_nvenc_encoder_deps="nvenc"
2828 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec hevc_qsv_hwaccel"
2829 hevc_qsv_encoder_select="hevcparse qsvenc"
2830 hevc_rkmpp_decoder_deps="rkmpp"
2831 hevc_rkmpp_decoder_select="hevc_mp4toannexb_bsf"
2832 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2833 hevc_vaapi_encoder_select="cbs_h265 vaapi_encode"
2834 hevc_v4l2m2m_decoder_deps="v4l2_m2m hevc_v4l2_m2m"
2835 hevc_v4l2m2m_encoder_deps="v4l2_m2m hevc_v4l2_m2m"
2836 mjpeg_cuvid_decoder_deps="cuvid"
2837 mjpeg_qsv_encoder_deps="libmfx"
2838 mjpeg_qsv_encoder_select="qsvenc"
2839 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2840 mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
2841 mpeg1_cuvid_decoder_deps="cuvid"
2842 mpeg1_v4l2m2m_decoder_deps="v4l2_m2m mpeg1_v4l2_m2m"
2843 mpeg2_crystalhd_decoder_select="crystalhd"
2844 mpeg2_cuvid_decoder_deps="cuvid"
2845 mpeg2_mmal_decoder_deps="mmal"
2846 mpeg2_mediacodec_decoder_deps="mediacodec"
2847 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel"
2848 mpeg2_qsv_encoder_select="qsvenc"
2849 mpeg2_vaapi_encoder_deps="VAEncPictureParameterBufferMPEG2"
2850 mpeg2_vaapi_encoder_select="cbs_mpeg2 vaapi_encode"
2851 mpeg2_v4l2m2m_decoder_deps="v4l2_m2m mpeg2_v4l2_m2m"
2852 mpeg4_crystalhd_decoder_select="crystalhd"
2853 mpeg4_cuvid_decoder_deps="cuvid"
2854 mpeg4_mediacodec_decoder_deps="mediacodec"
2855 mpeg4_mmal_decoder_deps="mmal"
2856 mpeg4_omx_encoder_deps="omx"
2857 mpeg4_v4l2m2m_decoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
2858 mpeg4_v4l2m2m_encoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
2859 msmpeg4_crystalhd_decoder_select="crystalhd"
2860 nvenc_h264_encoder_select="h264_nvenc_encoder"
2861 nvenc_hevc_encoder_select="hevc_nvenc_encoder"
2862 vc1_crystalhd_decoder_select="crystalhd"
2863 vc1_cuvid_decoder_deps="cuvid"
2864 vc1_mmal_decoder_deps="mmal"
2865 vc1_qsv_decoder_select="qsvdec vc1_qsv_hwaccel vc1_parser"
2866 vc1_v4l2m2m_decoder_deps="v4l2_m2m vc1_v4l2_m2m"
2867 vp8_cuvid_decoder_deps="cuvid"
2868 vp8_mediacodec_decoder_deps="mediacodec"
2869 vp8_qsv_decoder_select="qsvdec vp8_qsv_hwaccel vp8_parser"
2870 vp8_rkmpp_decoder_deps="rkmpp"
2871 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
2872 vp8_vaapi_encoder_select="vaapi_encode"
2873 vp8_v4l2m2m_decoder_deps="v4l2_m2m vp8_v4l2_m2m"
2874 vp8_v4l2m2m_encoder_deps="v4l2_m2m vp8_v4l2_m2m"
2875 vp9_cuvid_decoder_deps="cuvid"
2876 vp9_mediacodec_decoder_deps="mediacodec"
2877 vp9_rkmpp_decoder_deps="rkmpp"
2878 vp9_vaapi_encoder_deps="VAEncPictureParameterBufferVP9"
2879 vp9_vaapi_encoder_select="vaapi_encode"
2880 vp9_v4l2m2m_decoder_deps="v4l2_m2m vp9_v4l2_m2m"
2881 wmv3_crystalhd_decoder_select="crystalhd"
2882
2883 # parsers
2884 aac_parser_select="adts_header"
2885 h264_parser_select="golomb h264dsp h264parse"
2886 hevc_parser_select="hevcparse"
2887 mpegaudio_parser_select="mpegaudioheader"
2888 mpegvideo_parser_select="mpegvideo"
2889 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
2890 vc1_parser_select="vc1dsp"
2891
2892 # bitstream_filters
2893 aac_adtstoasc_bsf_select="adts_header"
2894 h264_metadata_bsf_select="cbs_h264"
2895 h264_redundant_pps_bsf_select="cbs_h264"
2896 hevc_metadata_bsf_select="cbs_h265"
2897 mjpeg2jpeg_bsf_select="jpegtables"
2898 mpeg2_metadata_bsf_select="cbs_mpeg2"
2899 trace_headers_bsf_select="cbs_h264 cbs_h265 cbs_mpeg2"
2900
2901 # external libraries
2902 aac_at_decoder_deps="audiotoolbox"
2903 ac3_at_decoder_deps="audiotoolbox"
2904 ac3_at_decoder_select="ac3_parser"
2905 adpcm_ima_qt_at_decoder_deps="audiotoolbox"
2906 alac_at_decoder_deps="audiotoolbox"
2907 amr_nb_at_decoder_deps="audiotoolbox"
2908 avisynth_deps_any="libdl LoadLibrary"
2909 avisynth_demuxer_deps="avisynth"
2910 avisynth_demuxer_select="riffdec"
2911 eac3_at_decoder_deps="audiotoolbox"
2912 eac3_at_decoder_select="ac3_parser"
2913 gsm_ms_at_decoder_deps="audiotoolbox"
2914 ilbc_at_decoder_deps="audiotoolbox"
2915 mp1_at_decoder_deps="audiotoolbox"
2916 mp2_at_decoder_deps="audiotoolbox"
2917 mp3_at_decoder_deps="audiotoolbox"
2918 mp1_at_decoder_select="mpegaudioheader"
2919 mp2_at_decoder_select="mpegaudioheader"
2920 mp3_at_decoder_select="mpegaudioheader"
2921 pcm_alaw_at_decoder_deps="audiotoolbox"
2922 pcm_mulaw_at_decoder_deps="audiotoolbox"
2923 qdmc_at_decoder_deps="audiotoolbox"
2924 qdm2_at_decoder_deps="audiotoolbox"
2925 aac_at_encoder_deps="audiotoolbox"
2926 aac_at_encoder_select="audio_frame_queue"
2927 alac_at_encoder_deps="audiotoolbox"
2928 alac_at_encoder_select="audio_frame_queue"
2929 ilbc_at_encoder_deps="audiotoolbox"
2930 ilbc_at_encoder_select="audio_frame_queue"
2931 pcm_alaw_at_encoder_deps="audiotoolbox"
2932 pcm_alaw_at_encoder_select="audio_frame_queue"
2933 pcm_mulaw_at_encoder_deps="audiotoolbox"
2934 pcm_mulaw_at_encoder_select="audio_frame_queue"
2935 chromaprint_muxer_deps="chromaprint"
2936 h264_videotoolbox_encoder_deps="pthreads"
2937 h264_videotoolbox_encoder_select="videotoolbox_encoder"
2938 hevc_videotoolbox_encoder_deps="pthreads"
2939 hevc_videotoolbox_encoder_select="videotoolbox_encoder"
2940 libcelt_decoder_deps="libcelt"
2941 libfdk_aac_decoder_deps="libfdk_aac"
2942 libfdk_aac_encoder_deps="libfdk_aac"
2943 libfdk_aac_encoder_select="audio_frame_queue"
2944 libgme_demuxer_deps="libgme"
2945 libgsm_decoder_deps="libgsm"
2946 libgsm_encoder_deps="libgsm"
2947 libgsm_ms_decoder_deps="libgsm"
2948 libgsm_ms_encoder_deps="libgsm"
2949 libilbc_decoder_deps="libilbc"
2950 libilbc_encoder_deps="libilbc"
2951 libkvazaar_encoder_deps="libkvazaar"
2952 libmodplug_demuxer_deps="libmodplug"
2953 libmp3lame_encoder_deps="libmp3lame"
2954 libmp3lame_encoder_select="audio_frame_queue mpegaudioheader"
2955 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2956 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2957 libopencore_amrnb_encoder_select="audio_frame_queue"
2958 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2959 libopenh264_decoder_deps="libopenh264"
2960 libopenh264_decoder_select="h264_mp4toannexb_bsf"
2961 libopenh264_encoder_deps="libopenh264"
2962 libopenjpeg_decoder_deps="libopenjpeg"
2963 libopenjpeg_encoder_deps="libopenjpeg"
2964 libopenmpt_demuxer_deps="libopenmpt"
2965 libopus_decoder_deps="libopus"
2966 libopus_encoder_deps="libopus"
2967 libopus_encoder_select="audio_frame_queue"
2968 librsvg_decoder_deps="librsvg"
2969 libshine_encoder_deps="libshine"
2970 libshine_encoder_select="audio_frame_queue"
2971 libspeex_decoder_deps="libspeex"
2972 libspeex_encoder_deps="libspeex"
2973 libspeex_encoder_select="audio_frame_queue"
2974 libtheora_encoder_deps="libtheora"
2975 libtwolame_encoder_deps="libtwolame"
2976 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2977 libvorbis_decoder_deps="libvorbis"
2978 libvorbis_encoder_deps="libvorbis libvorbisenc"
2979 libvorbis_encoder_select="audio_frame_queue"
2980 libvpx_vp8_decoder_deps="libvpx"
2981 libvpx_vp8_encoder_deps="libvpx"
2982 libvpx_vp9_decoder_deps="libvpx"
2983 libvpx_vp9_encoder_deps="libvpx"
2984 libwavpack_encoder_deps="libwavpack"
2985 libwavpack_encoder_select="audio_frame_queue"
2986 libwebp_encoder_deps="libwebp"
2987 libwebp_anim_encoder_deps="libwebp"
2988 libx262_encoder_deps="libx262"
2989 libx264_encoder_deps="libx264"
2990 libx264rgb_encoder_deps="libx264 x264_csp_bgr"
2991 libx264rgb_encoder_select="libx264_encoder"
2992 libx265_encoder_deps="libx265"
2993 libxavs_encoder_deps="libxavs"
2994 libxvid_encoder_deps="libxvid"
2995 libzvbi_teletext_decoder_deps="libzvbi"
2996 videotoolbox_suggest="coreservices"
2997 videotoolbox_deps="corefoundation coremedia corevideo"
2998 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
2999
3000 # demuxers / muxers
3001 ac3_demuxer_select="ac3_parser"
3002 aiff_muxer_select="iso_media"
3003 asf_demuxer_select="riffdec"
3004 asf_o_demuxer_select="riffdec"
3005 asf_muxer_select="riffenc"
3006 asf_stream_muxer_select="asf_muxer"
3007 avi_demuxer_select="iso_media riffdec exif"
3008 avi_muxer_select="riffenc"
3009 caf_demuxer_select="iso_media riffdec"
3010 caf_muxer_select="iso_media"
3011 dash_muxer_select="mp4_muxer"
3012 dash_demuxer_deps="libxml2"
3013 dirac_demuxer_select="dirac_parser"
3014 dts_demuxer_select="dca_parser"
3015 dtshd_demuxer_select="dca_parser"
3016 dv_demuxer_select="dvprofile"
3017 dv_muxer_select="dvprofile"
3018 dxa_demuxer_select="riffdec"
3019 eac3_demuxer_select="ac3_parser"
3020 f4v_muxer_select="mov_muxer"
3021 fifo_muxer_deps="threads"
3022 flac_demuxer_select="flac_parser"
3023 hds_muxer_select="flv_muxer"
3024 hls_muxer_select="mpegts_muxer"
3025 hls_muxer_suggest="gcrypt openssl"
3026 image2_alias_pix_demuxer_select="image2_demuxer"
3027 image2_brender_pix_demuxer_select="image2_demuxer"
3028 ipod_muxer_select="mov_muxer"
3029 ismv_muxer_select="mov_muxer"
3030 matroska_audio_muxer_select="matroska_muxer"
3031 matroska_demuxer_select="iso_media riffdec"
3032 matroska_demuxer_suggest="bzlib lzo zlib"
3033 matroska_muxer_select="iso_media riffenc"
3034 mmf_muxer_select="riffenc"
3035 mov_demuxer_select="iso_media riffdec"
3036 mov_demuxer_suggest="zlib"
3037 mov_muxer_select="iso_media riffenc rtpenc_chain"
3038 mp3_demuxer_select="mpegaudio_parser"
3039 mp3_muxer_select="mpegaudioheader"
3040 mp4_muxer_select="mov_muxer"
3041 mpegts_demuxer_select="iso_media"
3042 mpegts_muxer_select="adts_muxer latm_muxer"
3043 mpegtsraw_demuxer_select="mpegts_demuxer"
3044 mxf_d10_muxer_select="mxf_muxer"
3045 mxf_opatom_muxer_select="mxf_muxer"
3046 nut_muxer_select="riffenc"
3047 nuv_demuxer_select="riffdec"
3048 oga_muxer_select="ogg_muxer"
3049 ogg_demuxer_select="dirac_parse"
3050 ogv_muxer_select="ogg_muxer"
3051 opus_muxer_select="ogg_muxer"
3052 psp_muxer_select="mov_muxer"
3053 rtp_demuxer_select="sdp_demuxer"
3054 rtp_muxer_select="golomb"
3055 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
3056 rtsp_demuxer_select="http_protocol rtpdec"
3057 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
3058 sap_demuxer_select="sdp_demuxer"
3059 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
3060 sdp_demuxer_select="rtpdec"
3061 smoothstreaming_muxer_select="ismv_muxer"
3062 spdif_demuxer_select="adts_header"
3063 spdif_muxer_select="adts_header"
3064 spx_muxer_select="ogg_muxer"
3065 swf_demuxer_suggest="zlib"
3066 tak_demuxer_select="tak_parser"
3067 tg2_muxer_select="mov_muxer"
3068 tgp_muxer_select="mov_muxer"
3069 vobsub_demuxer_select="mpegps_demuxer"
3070 w64_demuxer_select="wav_demuxer"
3071 w64_muxer_select="wav_muxer"
3072 wav_demuxer_select="riffdec"
3073 wav_muxer_select="riffenc"
3074 webm_muxer_select="iso_media riffenc"
3075 webm_dash_manifest_demuxer_select="matroska_demuxer"
3076 wtv_demuxer_select="mpegts_demuxer riffdec"
3077 wtv_muxer_select="mpegts_muxer riffenc"
3078 xmv_demuxer_select="riffdec"
3079 xwma_demuxer_select="riffdec"
3080
3081 # indevs / outdevs
3082 alsa_indev_deps="alsa"
3083 alsa_outdev_deps="alsa"
3084 avfoundation_indev_deps="avfoundation corevideo coremedia pthreads"
3085 avfoundation_indev_suggest="coregraphics applicationservices"
3086 avfoundation_indev_extralibs="-framework Foundation"
3087 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
3088 caca_outdev_deps="libcaca"
3089 decklink_deps_any="libdl LoadLibrary"
3090 decklink_indev_deps="decklink threads"
3091 decklink_indev_extralibs="-lstdc++"
3092 decklink_outdev_deps="decklink threads"
3093 decklink_outdev_extralibs="-lstdc++"
3094 libndi_newtek_indev_deps="libndi_newtek"
3095 libndi_newtek_indev_extralibs="-lndi"
3096 libndi_newtek_outdev_deps="libndi_newtek"
3097 libndi_newtek_outdev_extralibs="-lndi"
3098 dshow_indev_deps="IBaseFilter"
3099 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
3100 fbdev_indev_deps="linux_fb_h"
3101 fbdev_outdev_deps="linux_fb_h"
3102 gdigrab_indev_deps="CreateDIBSection"
3103 gdigrab_indev_extralibs="-lgdi32"
3104 gdigrab_indev_select="bmp_decoder"
3105 iec61883_indev_deps="libiec61883"
3106 jack_indev_deps="libjack"
3107 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
3108 kmsgrab_indev_deps="libdrm"
3109 lavfi_indev_deps="avfilter"
3110 libcdio_indev_deps="libcdio"
3111 libdc1394_indev_deps="libdc1394"
3112 openal_indev_deps="openal"
3113 opengl_outdev_deps="opengl"
3114 oss_indev_deps_any="sys_soundcard_h"
3115 oss_outdev_deps_any="sys_soundcard_h"
3116 pulse_indev_deps="libpulse"
3117 pulse_outdev_deps="libpulse"
3118 sdl2_outdev_deps="sdl2"
3119 sndio_indev_deps="sndio"
3120 sndio_outdev_deps="sndio"
3121 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
3122 v4l2_indev_suggest="libv4l2"
3123 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
3124 v4l2_outdev_suggest="libv4l2"
3125 vfwcap_indev_deps="vfw32 vfwcap_defines"
3126 xcbgrab_indev_deps="libxcb"
3127 xcbgrab_indev_suggest="libxcb_shm libxcb_shape libxcb_xfixes"
3128 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
3129 xv_outdev_extralibs="-lXv -lX11 -lXext"
3130
3131 # protocols
3132 async_protocol_deps="threads"
3133 bluray_protocol_deps="libbluray"
3134 ffrtmpcrypt_protocol_conflict="librtmp_protocol"
3135 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
3136 ffrtmpcrypt_protocol_select="tcp_protocol"
3137 ffrtmphttp_protocol_conflict="librtmp_protocol"
3138 ffrtmphttp_protocol_select="http_protocol"
3139 ftp_protocol_select="tcp_protocol"
3140 gopher_protocol_select="network"
3141 http_protocol_select="tcp_protocol"
3142 http_protocol_suggest="zlib"
3143 httpproxy_protocol_select="tcp_protocol"
3144 httpproxy_protocol_suggest="zlib"
3145 https_protocol_select="tls_protocol"
3146 https_protocol_suggest="zlib"
3147 icecast_protocol_select="http_protocol"
3148 librtmp_protocol_deps="librtmp"
3149 librtmpe_protocol_deps="librtmp"
3150 librtmps_protocol_deps="librtmp"
3151 librtmpt_protocol_deps="librtmp"
3152 librtmpte_protocol_deps="librtmp"
3153 libsmbclient_protocol_deps="libsmbclient gplv3"
3154 libssh_protocol_deps="libssh"
3155 mmsh_protocol_select="http_protocol"
3156 mmst_protocol_select="network"
3157 rtmp_protocol_conflict="librtmp_protocol"
3158 rtmp_protocol_select="tcp_protocol"
3159 rtmp_protocol_suggest="zlib"
3160 rtmpe_protocol_select="ffrtmpcrypt_protocol"
3161 rtmpe_protocol_suggest="zlib"
3162 rtmps_protocol_conflict="librtmp_protocol"
3163 rtmps_protocol_select="tls_protocol"
3164 rtmps_protocol_suggest="zlib"
3165 rtmpt_protocol_select="ffrtmphttp_protocol"
3166 rtmpt_protocol_suggest="zlib"
3167 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
3168 rtmpte_protocol_suggest="zlib"
3169 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
3170 rtmpts_protocol_suggest="zlib"
3171 rtp_protocol_select="udp_protocol"
3172 schannel_conflict="openssl gnutls"
3173 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
3174 sctp_protocol_select="network"
3175 securetransport_conflict="openssl gnutls"
3176 srtp_protocol_select="rtp_protocol srtp"
3177 tcp_protocol_select="network"
3178 tls_protocol_deps_any="gnutls openssl schannel securetransport"
3179 tls_protocol_select="tcp_protocol"
3180 udp_protocol_select="network"
3181 udplite_protocol_select="network"
3182 unix_protocol_deps="sys_un_h"
3183 unix_protocol_select="network"
3184
3185 # filters
3186 afftfilt_filter_deps="avcodec"
3187 afftfilt_filter_select="fft"
3188 afir_filter_deps="avcodec"
3189 afir_filter_select="fft"
3190 amovie_filter_deps="avcodec avformat"
3191 aresample_filter_deps="swresample"
3192 ass_filter_deps="libass"
3193 atempo_filter_deps="avcodec"
3194 atempo_filter_select="rdft"
3195 azmq_filter_deps="libzmq"
3196 blackframe_filter_deps="gpl"
3197 boxblur_filter_deps="gpl"
3198 bs2b_filter_deps="libbs2b"
3199 colormatrix_filter_deps="gpl"
3200 coreimage_filter_deps="coreimage appkit"
3201 coreimage_filter_extralibs="-framework OpenGL"
3202 coreimagesrc_filter_deps="coreimage appkit"
3203 coreimagesrc_filter_extralibs="-framework OpenGL"
3204 cover_rect_filter_deps="avcodec avformat gpl"
3205 cropdetect_filter_deps="gpl"
3206 deinterlace_qsv_filter_deps="libmfx"
3207 deinterlace_vaapi_filter_deps="vaapi"
3208 delogo_filter_deps="gpl"
3209 deshake_filter_select="pixelutils"
3210 deshake_filter_suggest="opencl"
3211 drawtext_filter_deps="libfreetype"
3212 drawtext_filter_suggest="libfontconfig libfribidi"
3213 elbg_filter_deps="avcodec"
3214 eq_filter_deps="gpl"
3215 fftfilt_filter_deps="avcodec"
3216 fftfilt_filter_select="rdft"
3217 find_rect_filter_deps="avcodec avformat gpl"
3218 firequalizer_filter_deps="avcodec"
3219 firequalizer_filter_select="rdft"
3220 flite_filter_deps="libflite"
3221 framerate_filter_select="pixelutils"
3222 frei0r_filter_deps="frei0r libdl"
3223 frei0r_src_filter_deps="frei0r libdl"
3224 fspp_filter_deps="gpl"
3225 geq_filter_deps="gpl"
3226 histeq_filter_deps="gpl"
3227 hqdn3d_filter_deps="gpl"
3228 interlace_filter_deps="gpl"
3229 kerndeint_filter_deps="gpl"
3230 ladspa_filter_deps="ladspa libdl"
3231 mcdeint_filter_deps="avcodec gpl"
3232 movie_filter_deps="avcodec avformat"
3233 mpdecimate_filter_deps="gpl"
3234 mpdecimate_filter_select="pixelutils"
3235 mptestsrc_filter_deps="gpl"
3236 negate_filter_deps="lut_filter"
3237 nnedi_filter_deps="gpl"
3238 ocr_filter_deps="libtesseract"
3239 ocv_filter_deps="libopencv"
3240 overlay_qsv_filter_deps="libmfx"
3241 overlay_qsv_filter_select="qsvvpp"
3242 owdenoise_filter_deps="gpl"
3243 pan_filter_deps="swresample"
3244 perspective_filter_deps="gpl"
3245 phase_filter_deps="gpl"
3246 pp7_filter_deps="gpl"
3247 pp_filter_deps="gpl postproc"
3248 pullup_filter_deps="gpl"
3249 removelogo_filter_deps="avcodec avformat swscale"
3250 repeatfields_filter_deps="gpl"
3251 resample_filter_deps="avresample"
3252 rubberband_filter_deps="librubberband"
3253 sab_filter_deps="gpl swscale"
3254 scale2ref_filter_deps="swscale"
3255 scale_filter_deps="swscale"
3256 scale_qsv_filter_deps="libmfx"
3257 select_filter_select="pixelutils"
3258 showcqt_filter_deps="avcodec avformat swscale"
3259 showcqt_filter_suggest="libfontconfig libfreetype"
3260 showcqt_filter_select="fft"
3261 showfreqs_filter_deps="avcodec"
3262 showfreqs_filter_select="fft"
3263 showspectrum_filter_deps="avcodec"
3264 showspectrum_filter_select="fft"
3265 showspectrumpic_filter_deps="avcodec"
3266 showspectrumpic_filter_select="fft"
3267 signature_filter_deps="gpl avcodec avformat"
3268 smartblur_filter_deps="gpl swscale"
3269 sofalizer_filter_deps="libmysofa avcodec"
3270 sofalizer_filter_select="fft"
3271 spectrumsynth_filter_deps="avcodec"
3272 spectrumsynth_filter_select="fft"
3273 spp_filter_deps="gpl avcodec"
3274 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3275 stereo3d_filter_deps="gpl"
3276 subtitles_filter_deps="avformat avcodec libass"
3277 super2xsai_filter_deps="gpl"
3278 pixfmts_super2xsai_test_deps="super2xsai_filter"
3279 tinterlace_filter_deps="gpl"
3280 tinterlace_merge_test_deps="tinterlace_filter"
3281 tinterlace_pad_test_deps="tinterlace_filter"
3282 tonemap_filter_deps="const_nan"
3283 uspp_filter_deps="gpl avcodec"
3284 unsharp_filter_suggest="opencl"
3285 vaguedenoiser_filter_deps="gpl"
3286 vidstabdetect_filter_deps="libvidstab"
3287 vidstabtransform_filter_deps="libvidstab"
3288 libvmaf_filter_deps="libvmaf"
3289 zmq_filter_deps="libzmq"
3290 zoompan_filter_deps="swscale"
3291 zscale_filter_deps="libzimg const_nan"
3292 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3293 vpp_qsv_filter_deps="libmfx"
3294 vpp_qsv_filter_select="qsvvpp"
3295
3296 # examples
3297 avio_dir_cmd_deps="avformat avutil"
3298 avio_reading_deps="avformat avcodec avutil"
3299 decode_audio_example_deps="avcodec avutil"
3300 decode_video_example_deps="avcodec avutil"
3301 demuxing_decoding_example_deps="avcodec avformat avutil"
3302 encode_audio_example_deps="avcodec avutil"
3303 encode_video_example_deps="avcodec avutil"
3304 extract_mvs_example_deps="avcodec avformat avutil"
3305 filter_audio_example_deps="avfilter avutil"
3306 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3307 filtering_video_example_deps="avfilter avcodec avformat avutil"
3308 http_multiclient_example_deps="avformat avutil fork"
3309 hw_decode_example_deps="avcodec avformat avutil"
3310 metadata_example_deps="avformat avutil"
3311 muxing_example_deps="avcodec avformat avutil swscale"
3312 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
3313 remuxing_example_deps="avcodec avformat avutil"
3314 resampling_audio_example_deps="avutil swresample"
3315 scaling_video_example_deps="avutil swscale"
3316 transcode_aac_example_deps="avcodec avformat swresample"
3317 transcoding_example_deps="avfilter avcodec avformat avutil"
3318
3319 # EXTRALIBS_LIST
3320 cpu_init_extralibs="pthreads_extralibs"
3321 cws2fws_extralibs="zlib_extralibs"
3322
3323 # libraries, in linking order
3324 avcodec_deps="avutil"
3325 avcodec_suggest="libm"
3326 avcodec_select="null_bsf"
3327 avdevice_deps="avformat avcodec avutil"
3328 avdevice_suggest="libm"
3329 avfilter_deps="avutil"
3330 avfilter_suggest="libm"
3331 avformat_deps="avcodec avutil"
3332 avformat_suggest="libm network zlib"
3333 avresample_deps="avutil"
3334 avresample_suggest="libm"
3335 avutil_suggest="clock_gettime cuda libm libdrm libmfx opencl user32 vaapi videotoolbox corefoundation corevideo coremedia wincrypt"
3336 postproc_deps="avutil gpl"
3337 postproc_suggest="libm"
3338 swresample_deps="avutil"
3339 swresample_suggest="libm libsoxr"
3340 swscale_deps="avutil"
3341 swscale_suggest="libm"
3342
3343 avcodec_extralibs="pthreads_extralibs iconv_extralibs"
3344 avfilter_extralibs="pthreads_extralibs"
3345 avutil_extralibs="d3d11va_extralibs nanosleep_extralibs pthreads_extralibs vaapi_drm_extralibs vaapi_x11_extralibs vdpau_x11_extralibs"
3346
3347 # programs
3348 ffmpeg_deps="avcodec avfilter avformat swresample"
3349 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3350                null_filter
3351                trim_filter"
3352 ffmpeg_suggest="ole32 psapi shell32"
3353 ffplay_deps="avcodec avformat swscale swresample sdl2"
3354 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3355 ffplay_suggest="shell32"
3356 ffprobe_deps="avcodec avformat"
3357 ffprobe_suggest="shell32"
3358 ffserver_deps="avformat fork sarestart"
3359 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
3360
3361 # documentation
3362 podpages_deps="perl"
3363 manpages_deps="perl pod2man"
3364 htmlpages_deps="perl"
3365 htmlpages_deps_any="makeinfo_html texi2html"
3366 txtpages_deps="perl makeinfo"
3367 doc_deps_any="manpages htmlpages podpages txtpages"
3368
3369 # default parameters
3370
3371 logfile="ffbuild/config.log"
3372
3373 # installation paths
3374 prefix_default="/usr/local"
3375 bindir_default='${prefix}/bin'
3376 datadir_default='${prefix}/share/ffmpeg'
3377 docdir_default='${prefix}/share/doc/ffmpeg'
3378 incdir_default='${prefix}/include'
3379 libdir_default='${prefix}/lib'
3380 mandir_default='${prefix}/share/man'
3381
3382 # toolchain
3383 ar_default="ar"
3384 cc_default="gcc"
3385 cxx_default="g++"
3386 host_cc_default="gcc"
3387 doxygen_default="doxygen"
3388 install="install"
3389 ln_s_default="ln -s -f"
3390 nm_default="nm -g"
3391 pkg_config_default=pkg-config
3392 ranlib_default="ranlib"
3393 strip_default="strip"
3394 version_script='--version-script'
3395 objformat="elf32"
3396 x86asmexe_default="nasm"
3397 windres_default="windres"
3398 nvcc_default="nvcc"
3399 nvccflags_default="-gencode arch=compute_30,code=sm_30 -O2"
3400 striptype="direct"
3401
3402 # OS
3403 target_os_default=$(tolower $(uname -s))
3404 host_os=$target_os_default
3405
3406 # machine
3407 if test "$target_os_default" = aix; then
3408     arch_default=$(uname -p)
3409     strip_default="strip -X32_64"
3410 else
3411     arch_default=$(uname -m)
3412 fi
3413 cpu="generic"
3414 intrinsics="none"
3415
3416 # configurable options
3417 enable $PROGRAM_LIST
3418 enable $DOCUMENT_LIST
3419 enable $EXAMPLE_LIST
3420 enable $(filter_out avresample $LIBRARY_LIST)
3421 enable stripping
3422
3423 enable asm
3424 enable debug
3425 enable doc
3426 enable faan faandct faanidct
3427 enable optimizations
3428 enable runtime_cpudetect
3429 enable safe_bitstream_reader
3430 enable static
3431 enable swscale_alpha
3432 enable valgrind_backtrace
3433
3434 sws_max_filter_size_default=256
3435 set_default sws_max_filter_size
3436
3437 # internal components are enabled by default
3438 enable $EXTRALIBS_LIST
3439
3440 # Avoid external, non-system, libraries getting enabled by dependency resolution
3441 disable $EXTERNAL_LIBRARY_LIST $HWACCEL_LIBRARY_LIST
3442
3443 # build settings
3444 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3445 LIBPREF="lib"
3446 LIBSUF=".a"
3447 FULLNAME='$(NAME)$(BUILDSUF)'
3448 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3449 SLIBPREF="lib"
3450 SLIBSUF=".so"
3451 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3452 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3453 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3454 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3455 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3456 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3457 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
3458
3459 asflags_filter=echo
3460 cflags_filter=echo
3461 ldflags_filter=echo
3462
3463 AS_C='-c'
3464 AS_O='-o $@'
3465 CC_C='-c'
3466 CC_E='-E -o $@'
3467 CC_O='-o $@'
3468 CXX_C='-c'
3469 CXX_O='-o $@'
3470 OBJCC_C='-c'
3471 OBJCC_E='-E -o $@'
3472 OBJCC_O='-o $@'
3473 X86ASM_O='-o $@'
3474 LD_O='-o $@'
3475 LD_LIB='-l%'
3476 LD_PATH='-L'
3477 HOSTCC_C='-c'
3478 HOSTCC_E='-E -o $@'
3479 HOSTCC_O='-o $@'
3480 HOSTLD_O='-o $@'
3481 NVCC_C='-c'
3482 NVCC_O='-o $@'
3483
3484 host_extralibs='-lm'
3485 host_cflags_filter=echo
3486 host_ldflags_filter=echo
3487
3488 target_path='$(CURDIR)'
3489
3490 # since the object filename is not given with the -MM flag, the compiler
3491 # is only able to print the basename, and we must add the path ourselves
3492 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3493 DEPFLAGS='-MM'
3494
3495 mkdir -p ffbuild
3496
3497 # find source path
3498 if test -f configure; then
3499     source_path=.
3500 else
3501     source_path=$(cd $(dirname "$0"); pwd)
3502     case "$source_path" in
3503         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3504     esac
3505     test -e "$source_path/config.h" &&
3506         die "Out of tree builds are impossible with config.h in source dir."
3507 fi
3508
3509 for v in "$@"; do
3510     r=${v#*=}
3511     l=${v%"$r"}
3512     r=$(sh_quote "$r")
3513     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3514 done
3515
3516 find_things(){
3517     thing=$1
3518     pattern=$2
3519     file=$source_path/$3
3520     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
3521 }
3522
3523 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
3524 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
3525 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
3526 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
3527 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
3528 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
3529 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
3530 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
3531 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
3532
3533 find_things_extern(){
3534     thing=$1
3535     pattern=$2
3536     file=$source_path/$3
3537     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
3538 }
3539
3540 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3541 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3542
3543 AVCODEC_COMPONENTS_LIST="
3544     $BSF_LIST
3545     $DECODER_LIST
3546     $ENCODER_LIST
3547     $HWACCEL_LIST
3548     $PARSER_LIST
3549 "
3550
3551 AVDEVICE_COMPONENTS_LIST="
3552     $INDEV_LIST
3553     $OUTDEV_LIST
3554 "
3555
3556 AVFILTER_COMPONENTS_LIST="
3557     $FILTER_LIST
3558 "
3559
3560 AVFORMAT_COMPONENTS_LIST="
3561     $DEMUXER_LIST
3562     $MUXER_LIST
3563     $PROTOCOL_LIST
3564 "
3565
3566 ALL_COMPONENTS="
3567     $AVCODEC_COMPONENTS_LIST
3568     $AVDEVICE_COMPONENTS_LIST
3569     $AVFILTER_COMPONENTS_LIST
3570     $AVFORMAT_COMPONENTS_LIST
3571 "
3572
3573 for n in $COMPONENT_LIST; do
3574     v=$(toupper ${n%s})_LIST
3575     eval enable \$$v
3576     eval ${n}_if_any="\$$v"
3577 done
3578
3579 enable $ARCH_EXT_LIST
3580
3581 die_unknown(){
3582     echo "Unknown option \"$1\"."
3583     echo "See $0 --help for available options."
3584     exit 1
3585 }
3586
3587 print_in_columns() {
3588     cols=$(expr $ncols / 24)
3589     cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
3590 }
3591
3592 show_list() {
3593     suffix=_$1
3594     shift
3595     echo $* | sed s/$suffix//g | print_in_columns
3596     exit 0
3597 }
3598
3599 rand_list(){
3600     IFS=', '
3601     set -- $*
3602     unset IFS
3603     for thing; do
3604         comp=${thing%:*}
3605         prob=${thing#$comp}
3606         prob=${prob#:}
3607         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3608         echo "prob ${prob:-0.5}"
3609         printf '%s\n' $comp
3610     done
3611 }
3612
3613 do_random(){
3614     action=$1
3615     shift
3616     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3617     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3618 }
3619
3620 for opt do
3621     optval="${opt#*=}"
3622     case "$opt" in
3623         --extra-ldflags=*)
3624             add_ldflags $optval
3625         ;;
3626         --extra-ldexeflags=*)
3627             add_ldexeflags $optval
3628         ;;
3629         --extra-ldsoflags=*)
3630             add_ldsoflags $optval
3631         ;;
3632         --extra-ldlibflags=*)
3633             warn "The --extra-ldlibflags option is only provided for compatibility and will be\n"\
3634                  "removed in the future. Use --extra-ldsoflags instead."
3635             add_ldsoflags $optval
3636         ;;
3637         --extra-libs=*)
3638             add_extralibs $optval
3639         ;;
3640         --disable-devices)
3641             disable $INDEV_LIST $OUTDEV_LIST
3642         ;;
3643         --enable-debug=*)
3644             debuglevel="$optval"
3645         ;;
3646         --disable-programs)
3647             disable $PROGRAM_LIST
3648         ;;
3649         --disable-everything)
3650             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3651         ;;
3652         --disable-all)
3653             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3654             disable $LIBRARY_LIST $PROGRAM_LIST doc
3655             enable avutil
3656         ;;
3657         --enable-random|--disable-random)
3658             action=${opt%%-random}
3659             do_random ${action#--} $COMPONENT_LIST
3660         ;;
3661         --enable-random=*|--disable-random=*)
3662             action=${opt%%-random=*}
3663             do_random ${action#--} $optval
3664         ;;
3665         --enable-sdl)
3666             enable sdl2
3667         ;;
3668         --enable-*=*|--disable-*=*)
3669             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3670             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3671             eval list=\$$(toupper $thing)_LIST
3672             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3673             list=$(filter "$name" $list)
3674             [ "$list" = "" ] && warn "Option $opt did not match anything"
3675             $action $list
3676         ;;
3677         --enable-yasm|--disable-yasm)
3678             warn "The ${opt} option is only provided for compatibility and will be\n"\
3679                  "removed in the future. Use --enable-x86asm / --disable-x86asm instead."
3680             test $opt = --enable-yasm && x86asm=yes || x86asm=no
3681         ;;
3682         --yasmexe=*)
3683             warn "The --yasmexe option is only provided for compatibility and will be\n"\
3684                  "removed in the future. Use --x86asmexe instead."
3685             x86asmexe="$optval"
3686         ;;
3687         --enable-?*|--disable-?*)
3688             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3689             if is_in $option $COMPONENT_LIST; then
3690                 test $action = disable && action=unset
3691                 eval $action \$$(toupper ${option%s})_LIST
3692             elif is_in $option $CMDLINE_SELECT; then
3693                 $action $option
3694             else
3695                 die_unknown $opt
3696             fi
3697         ;;
3698         --list-*)
3699             NAME="${opt#--list-}"
3700             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3701             NAME=${NAME%s}
3702             eval show_list $NAME \$$(toupper $NAME)_LIST
3703         ;;
3704         --help|-h) show_help
3705         ;;
3706         --quiet|-q) quiet=yes
3707         ;;
3708         --fatal-warnings) enable fatal_warnings
3709         ;;
3710         --libfuzzer=*)
3711             libfuzzer_path="$optval"
3712         ;;
3713         *)
3714             optname="${opt%%=*}"
3715             optname="${optname#--}"
3716             optname=$(echo "$optname" | sed 's/-/_/g')
3717             if is_in $optname $CMDLINE_SET; then
3718                 eval $optname='$optval'
3719             elif is_in $optname $CMDLINE_APPEND; then
3720                 append $optname "$optval"
3721             else
3722                 die_unknown $opt
3723             fi
3724         ;;
3725     esac
3726 done
3727
3728 for e in $env; do
3729     eval "export $e"
3730 done
3731
3732 if disabled autodetect; then
3733
3734     # Unless iconv is explicitely disabled by the user, we still want to probe
3735     # for the iconv from the libc.
3736     disabled iconv || enable libc_iconv
3737
3738     disable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3739     disable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3740 fi
3741 # Mark specifically enabled, but normally autodetected libraries as requested.
3742 for lib in $AUTODETECT_LIBS; do
3743     enabled $lib && request $lib
3744 done
3745 #TODO: switch to $AUTODETECT_LIBS when $THREADS_LIST is supported the same way
3746 enable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3747 enable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3748
3749 disabled logging && logfile=/dev/null
3750
3751 # command line configuration sanity checks
3752
3753 # we need to build at least one lib type
3754 if ! enabled_any static shared; then
3755     cat <<EOF
3756 At least one library type must be built.
3757 Specify --enable-static to build the static libraries or --enable-shared to
3758 build the shared libraries as well. To only build the shared libraries specify
3759 --disable-static in addition to --enable-shared.
3760 EOF
3761     exit 1
3762 fi
3763
3764 die_license_disabled() {
3765     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
3766 }
3767
3768 die_license_disabled_gpl() {
3769     enabled $1 || { enabled $v && die "$v is incompatible with the gpl and --enable-$1 is not specified."; }
3770 }
3771
3772 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3773 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3774
3775 enabled gpl && map "die_license_disabled_gpl nonfree" $EXTERNAL_LIBRARY_NONFREE_LIST
3776 map "die_license_disabled nonfree" $HWACCEL_LIBRARY_NONFREE_LIST
3777
3778 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3779
3780 enabled_all gnutls openssl &&
3781     die "GnuTLS and OpenSSL must not be enabled at the same time."
3782
3783 # Disable all the library-specific components if the library itself
3784 # is disabled, see AVCODEC_LIST and following _LIST variables.
3785
3786 disable_components(){
3787     disabled ${1} && disable $(
3788         eval components="\$$(toupper ${1})_COMPONENTS"
3789         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
3790     )
3791 }
3792
3793 map 'disable_components $v' $LIBRARY_LIST
3794
3795 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
3796 set >> $logfile
3797
3798 test -n "$valgrind" && toolchain="valgrind-memcheck"
3799
3800 enabled ossfuzz && {
3801     add_cflags  -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp -fno-omit-frame-pointer
3802     add_ldflags -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp
3803 }
3804
3805 case "$toolchain" in
3806     *-asan)
3807         cc_default="${toolchain%-asan}"
3808         add_cflags  -fsanitize=address
3809         add_ldflags -fsanitize=address
3810     ;;
3811     *-msan)
3812         cc_default="${toolchain%-msan}"
3813         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
3814         add_ldflags -fsanitize=memory
3815     ;;
3816     *-tsan)
3817         cc_default="${toolchain%-tsan}"
3818         add_cflags  -fsanitize=thread -fPIE
3819         add_ldflags -fsanitize=thread -pie
3820         case "$toolchain" in
3821             gcc-tsan)
3822                 add_cflags  -fPIC
3823                 add_ldflags -fPIC
3824                 ;;
3825         esac
3826     ;;
3827     *-usan)
3828         cc_default="${toolchain%-usan}"
3829         add_cflags  -fsanitize=undefined
3830         add_ldflags -fsanitize=undefined
3831     ;;
3832     valgrind-*)
3833         target_exec_default="valgrind"
3834         case "$toolchain" in
3835             valgrind-massif)
3836                 target_exec_args="--tool=massif --alloc-fn=av_malloc --alloc-fn=av_mallocz --alloc-fn=av_calloc --alloc-fn=av_fast_padded_malloc --alloc-fn=av_fast_malloc --alloc-fn=av_realloc_f --alloc-fn=av_fast_realloc --alloc-fn=av_realloc"
3837                 ;;
3838             valgrind-memcheck)
3839                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3840                 ;;
3841         esac
3842     ;;
3843     msvc)
3844         # Check whether the current MSVC version needs the C99 converter.
3845         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3846         # support enough of C99 to build ffmpeg. Default to the new
3847         # behaviour if the regexp was unable to match anything, since this
3848         # successfully parses the version number of existing supported
3849         # versions that require the converter (MSVC 2010 and 2012).
3850         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3851         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3852             cc_default="cl"
3853             cxx_default="cl"
3854         else
3855             cc_default="c99wrap cl"
3856             cxx_default="c99wrap cl"
3857         fi
3858         ld_default="$source_path/compat/windows/mslink"
3859         nm_default="dumpbin -symbols"
3860         ar_default="lib"
3861         case "$arch" in
3862         aarch64|arm64)
3863             as_default="armasm64"
3864             ;;
3865         arm*)
3866             as_default="armasm"
3867             ;;
3868         esac
3869         target_os_default="win32"
3870         # Use a relative path for TMPDIR. This makes sure all the
3871         # ffconf temp files are written with a relative path, avoiding
3872         # issues with msys/win32 path conversion for MSVC parameters
3873         # such as -Fo<file> or -out:<file>.
3874         TMPDIR=.
3875     ;;
3876     icl)
3877         cc_default="icl"
3878         ld_default="xilink"
3879         nm_default="dumpbin -symbols"
3880         ar_default="xilib"
3881         target_os_default="win32"
3882         TMPDIR=.
3883     ;;
3884     gcov)
3885         add_cflags  -fprofile-arcs -ftest-coverage
3886         add_ldflags -fprofile-arcs -ftest-coverage
3887     ;;
3888     llvm-cov)
3889         add_cflags -fprofile-arcs -ftest-coverage
3890         add_ldflags --coverage
3891     ;;
3892     hardened)
3893         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3894         add_cflags   -fno-strict-overflow -fstack-protector-all
3895         add_ldflags  -Wl,-z,relro -Wl,-z,now
3896         add_cflags   -fPIE
3897         add_ldexeflags -fPIE -pie
3898     ;;
3899     ?*)
3900         die "Unknown toolchain $toolchain"
3901     ;;
3902 esac
3903
3904 if test -n "$cross_prefix"; then
3905     test -n "$arch" && test -n "$target_os" ||
3906         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
3907     enable cross_compile
3908 fi
3909
3910 ar_default="${cross_prefix}${ar_default}"
3911 cc_default="${cross_prefix}${cc_default}"
3912 cxx_default="${cross_prefix}${cxx_default}"
3913 nm_default="${cross_prefix}${nm_default}"
3914 pkg_config_default="${cross_prefix}${pkg_config_default}"
3915 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
3916     ranlib_default="${cross_prefix}${ranlib_default} -D"
3917 else
3918     ranlib_default="${cross_prefix}${ranlib_default}"
3919 fi
3920 strip_default="${cross_prefix}${strip_default}"
3921 windres_default="${cross_prefix}${windres_default}"
3922
3923 sysinclude_default="${sysroot}/usr/include"
3924
3925 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3926     target_exec target_os x86asmexe nvcc
3927 enabled cross_compile || host_cc_default=$cc
3928 set_default host_cc
3929
3930 pkg_config_fail_message=""
3931 if ! $pkg_config --version >/dev/null 2>&1; then
3932     warn "$pkg_config not found, library detection may fail."
3933     pkg_config=false
3934 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
3935     pkg_config_fail_message="
3936 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
3937 fi
3938
3939 if test $doxygen != $doxygen_default && \
3940   ! $doxygen --version >/dev/null 2>&1; then
3941     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3942 fi
3943
3944 exesuf() {
3945     case $1 in
3946         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3947     esac
3948 }
3949
3950 EXESUF=$(exesuf $target_os)
3951 HOSTEXESUF=$(exesuf $host_os)
3952
3953 # set temporary file name
3954 : ${TMPDIR:=$TEMPDIR}
3955 : ${TMPDIR:=$TMP}
3956 : ${TMPDIR:=/tmp}
3957
3958 if [ -n "$tempprefix" ] ; then
3959     mktemp(){
3960         tmpname="$tempprefix.${HOSTNAME}.${UID}"
3961         echo "$tmpname"
3962         mkdir "$tmpname"
3963     }
3964 elif ! check_cmd mktemp -u XXXXXX; then
3965     # simple replacement for missing mktemp
3966     # NOT SAFE FOR GENERAL USE
3967     mktemp(){
3968         tmpname="${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3969         echo "$tmpname"
3970         mkdir "$tmpname"
3971     }
3972 fi
3973
3974 FFTMPDIR=$(mktemp -d "${TMPDIR}/ffconf.XXXXXXXX" 2> /dev/null) ||
3975     die "Unable to create temporary directory in $TMPDIR."
3976
3977 tmpfile(){
3978     tmp="${FFTMPDIR}/test"$2
3979     (set -C; exec > $tmp) 2> /dev/null ||
3980         die "Unable to create temporary file in $FFTMPDIR."
3981     eval $1=$tmp
3982 }
3983
3984 trap 'rm -rf -- "$FFTMPDIR"' EXIT
3985 trap 'exit 2' INT
3986
3987 tmpfile TMPASM .asm
3988 tmpfile TMPC   .c
3989 tmpfile TMPCPP .cpp
3990 tmpfile TMPE   $EXESUF
3991 tmpfile TMPH   .h
3992 tmpfile TMPM   .m
3993 tmpfile TMPO   .o
3994 tmpfile TMPS   .S
3995 tmpfile TMPSH  .sh
3996 tmpfile TMPV   .ver
3997
3998 unset -f mktemp
3999
4000 chmod +x $TMPE
4001
4002 # make sure we can execute files in $TMPDIR
4003 cat > $TMPSH 2>> $logfile <<EOF
4004 #! /bin/sh
4005 EOF
4006 chmod +x $TMPSH >> $logfile 2>&1
4007 if ! $TMPSH >> $logfile 2>&1; then
4008     cat <<EOF
4009 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
4010 variable to another directory and make sure that it is not mounted noexec.
4011 EOF
4012     die "Sanity test failed."
4013 fi
4014
4015 armasm_flags(){
4016     for flag; do
4017         case $flag in
4018             # Filter out MSVC cl.exe options from cflags that shouldn't
4019             # be passed to gas-preprocessor
4020             -M[TD]*)                                            ;;
4021             *)                  echo $flag                      ;;
4022         esac
4023    done
4024 }
4025
4026 cparser_flags(){
4027     for flag; do
4028         case $flag in
4029             -Wno-switch)             echo -Wno-switch-enum ;;
4030             -Wno-format-zero-length) ;;
4031             -Wdisabled-optimization) ;;
4032             -Wno-pointer-sign)       echo -Wno-other ;;
4033             *)                       echo $flag ;;
4034         esac
4035     done
4036 }
4037
4038 msvc_common_flags(){
4039     for flag; do
4040         case $flag in
4041             # In addition to specifying certain flags under the compiler
4042             # specific filters, they must be specified here as well or else the
4043             # generic catch all at the bottom will print the original flag.
4044             -Wall)                ;;
4045             -Wextra)              ;;
4046             -std=c99)             ;;
4047             # Common flags
4048             -fomit-frame-pointer) ;;
4049             -g)                   echo -Z7 ;;
4050             -fno-math-errno)      ;;
4051             -fno-common)          ;;
4052             -fno-signed-zeros)    ;;
4053             -fPIC)                ;;
4054             -mthumb)              ;;
4055             -march=*)             ;;
4056             -lz)                  echo zlib.lib ;;
4057             -lx264)               echo libx264.lib ;;
4058             -lstdc++)             ;;
4059             -l*)                  echo ${flag#-l}.lib ;;
4060             -LARGEADDRESSAWARE)   echo $flag ;;
4061             -L*)                  echo -libpath:${flag#-L} ;;
4062             *)                    echo $flag ;;
4063         esac
4064     done
4065 }
4066
4067 msvc_flags(){
4068     msvc_common_flags "$@"
4069     for flag; do
4070         case $flag in
4071             -Wall)                echo -W3 -wd4018 -wd4146 -wd4244 -wd4305     \
4072                                        -wd4554 ;;
4073             -Wextra)              echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
4074                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
4075                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
4076                                        -wd4307 \
4077                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
4078         esac
4079     done
4080 }
4081
4082 icl_flags(){
4083     msvc_common_flags "$@"
4084     for flag; do
4085         case $flag in
4086             # Despite what Intel's documentation says -Wall, which is supported
4087             # on Windows, does enable remarks so disable them here.
4088             -Wall)                echo $flag -Qdiag-disable:remark ;;
4089             -std=c99)             echo -Qstd=c99 ;;
4090             -flto)                echo -ipo ;;
4091         esac
4092     done
4093 }
4094
4095 icc_flags(){
4096     for flag; do
4097         case $flag in
4098             -flto)                echo -ipo ;;
4099             *)                    echo $flag ;;
4100         esac
4101     done
4102 }
4103
4104 suncc_flags(){
4105     for flag; do
4106         case $flag in
4107             -march=*|-mcpu=*)
4108                 case "${flag#*=}" in
4109                     native)                   echo -xtarget=native       ;;
4110                     v9|niagara)               echo -xarch=sparc          ;;
4111                     ultrasparc)               echo -xarch=sparcvis       ;;
4112                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
4113                     i586|pentium)             echo -xchip=pentium        ;;
4114                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
4115                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
4116                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
4117                     pentium4*)          echo -xtarget=pentium4           ;;
4118                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
4119                     *-sse3)             echo -xarch=sse3                 ;;
4120                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
4121                     bonnell)                   echo -xarch=ssse3         ;;
4122                     corei7|nehalem)            echo -xtarget=nehalem     ;;
4123                     westmere)                  echo -xtarget=westmere    ;;
4124                     silvermont)                echo -xarch=sse4_2        ;;
4125                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
4126                     core-avx*|ivybridge|haswell|broadwell|skylake*|knl)
4127                                                echo -xarch=avx           ;;
4128                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
4129                     btver1)                    echo -xarch=amdsse4a      ;;
4130                     btver2|bdver*|znver*)      echo -xarch=avx           ;;
4131                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
4132                     k8|opteron|athlon64|athlon-fx)
4133                                                echo -xarch=sse2a         ;;
4134                     athlon*)                   echo -xarch=pentium_proa  ;;
4135                 esac
4136                 ;;
4137             -std=c99)             echo -xc99              ;;
4138             -fomit-frame-pointer) echo -xregs=frameptr    ;;
4139             -fPIC)                echo -KPIC -xcode=pic32 ;;
4140             -W*,*)                echo $flag              ;;
4141             -f*-*|-W*|-mimpure-text)                      ;;
4142             -shared)              echo -G                 ;;
4143             *)                    echo $flag              ;;
4144         esac
4145     done
4146 }
4147
4148 probe_cc(){
4149     pfx=$1
4150     _cc=$2
4151     first=$3
4152
4153     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
4154     unset _ld_o _ldflags _ld_lib _ld_path
4155     unset _depflags _DEPCMD _DEPFLAGS
4156     _flags_filter=echo
4157
4158     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
4159         true # no-op to avoid reading stdin in following checks
4160     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
4161         _type=llvm_gcc
4162         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
4163         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
4164         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4165         _cflags_speed='-O3'
4166         _cflags_size='-Os'
4167     elif $_cc -v 2>&1 | grep -qi ^gcc; then
4168         _type=gcc
4169         gcc_version=$($_cc --version | head -n1)
4170         gcc_basever=$($_cc -dumpversion)
4171         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
4172         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
4173         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
4174         case $gcc_basever in
4175             2) ;;
4176             2.*) ;;
4177             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
4178         esac
4179         if [ "$first" = true ]; then
4180             case $gcc_basever in
4181                 4.2*)
4182                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
4183             esac
4184         fi
4185         _cflags_speed='-O3'
4186         _cflags_size='-Os'
4187     elif $_cc --version 2>/dev/null | grep -q ^icc; then
4188         _type=icc
4189         _ident=$($_cc --version | head -n1)
4190         _depflags='-MMD'
4191         _cflags_speed='-O3'
4192         _cflags_size='-Os'
4193         _cflags_noopt='-O1'
4194         _flags_filter=icc_flags
4195     elif $_cc -v 2>&1 | grep -q xlc; then
4196         _type=xlc
4197         _ident=$($_cc -qversion 2>/dev/null | head -n1)
4198         _cflags_speed='-O5'
4199         _cflags_size='-O5 -qcompact'
4200     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
4201         test -d "$sysroot" || die "No valid sysroot specified."
4202         _type=armcc
4203         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
4204         armcc_conf="$PWD/armcc.conf"
4205         $_cc --arm_linux_configure                 \
4206              --arm_linux_config_file="$armcc_conf" \
4207              --configure_sysroot="$sysroot"        \
4208              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
4209              die "Error creating armcc configuration file."
4210         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
4211         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
4212         as_default="${cross_prefix}gcc"
4213         _depflags='-MMD'
4214         _cflags_speed='-O3'
4215         _cflags_size='-Os'
4216     elif $_cc -v 2>&1 | grep -q clang; then
4217         _type=clang
4218         _ident=$($_cc --version 2>/dev/null | head -n1)
4219         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4220         _cflags_speed='-O3'
4221         _cflags_size='-Oz'
4222     elif $_cc -V 2>&1 | grep -q Sun; then
4223         _type=suncc
4224         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
4225         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
4226         _DEPFLAGS='-xM1 -xc99'
4227         _ldflags='-std=c99'
4228         _cflags_speed='-O5'
4229         _cflags_size='-O5 -xspace'
4230         _flags_filter=suncc_flags
4231     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
4232         _type=pathscale
4233         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4234         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4235         _cflags_speed='-O2'
4236         _cflags_size='-Os'
4237         _flags_filter='filter_out -Wdisabled-optimization'
4238     elif $_cc -v 2>&1 | grep -q Open64; then
4239         _type=open64
4240         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4241         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4242         _cflags_speed='-O2'
4243         _cflags_size='-Os'
4244         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
4245     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
4246         _type=armasm
4247         _ident=$($_cc | head -n1)
4248         # 4509: "This form of conditional instruction is deprecated"
4249         _flags="-nologo -ignore 4509"
4250         _flags_filter=armasm_flags
4251     elif $_cc 2>&1 | grep -q Intel; then
4252         _type=icl
4253         _ident=$($_cc 2>&1 | head -n1)
4254         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
4255         # Not only is O3 broken on 13.x+ but it is slower on all previous
4256         # versions (tested) as well.
4257         _cflags_speed="-O2"
4258         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
4259         if $_cc 2>&1 | grep -q Linker; then
4260             _ld_o='-out:$@'
4261         else
4262             _ld_o='-Fe$@'
4263         fi
4264         _cc_o='-Fo$@'
4265         _cc_e='-P'
4266         _flags_filter=icl_flags
4267         _ld_lib='lib%.a'
4268         _ld_path='-libpath:'
4269         # -Qdiag-error to make icl error when seeing certain unknown arguments
4270         _flags='-nologo -Qdiag-error:4044,10157'
4271         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
4272         # with MSVC which enables it by default.
4273         _cflags='-Qms0 -Qvec- -Qsimd- -GS -fp:precise'
4274         disable stripping
4275     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
4276         # lld can emulate multiple different linkers; in ms link.exe mode,
4277         # the -? parameter gives the help output which contains an identifyable
4278         # string, while it gives an error in other modes.
4279         _type=lld-link
4280         # The link.exe mode doesn't have a switch for getting the version,
4281         # but we can force it back to gnu mode and get the version from there.
4282         _ident=$($_cc -flavor gnu --version 2>/dev/null)
4283         _ld_o='-out:$@'
4284         _flags_filter=msvc_flags
4285         _ld_lib='lib%.a'
4286         _ld_path='-libpath:'
4287     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
4288         _type=msvc
4289         _ident=$($_cc 2>&1 | head -n1)
4290         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
4291         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
4292         _cflags_speed="-O2"
4293         _cflags_size="-O1"
4294         _cflags_noopt="-O1"
4295         if $_cc -nologo- 2>&1 | grep -q Linker; then
4296             _ld_o='-out:$@'
4297         else
4298             _ld_o='-Fe$@'
4299         fi
4300         _cc_o='-Fo$@'
4301         _cc_e='-P -Fi$@'
4302         _flags_filter=msvc_flags
4303         _ld_lib='lib%.a'
4304         _ld_path='-libpath:'
4305         _flags='-nologo'
4306         disable stripping
4307     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
4308         _type=cparser
4309         _ident=$($_cc --version | head -n1)
4310         _depflags='-MMD'
4311         _cflags_speed='-O4'
4312         _cflags_size='-O2'
4313         _flags_filter=cparser_flags
4314     fi
4315
4316     eval ${pfx}_type=\$_type
4317     eval ${pfx}_ident=\$_ident
4318 }
4319
4320 set_ccvars(){
4321     eval ${1}_C=\${_cc_c-\${${1}_C}}
4322     eval ${1}_E=\${_cc_e-\${${1}_E}}
4323     eval ${1}_O=\${_cc_o-\${${1}_O}}
4324
4325     if [ -n "$_depflags" ]; then
4326         eval ${1}_DEPFLAGS=\$_depflags
4327     else
4328         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
4329         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
4330         eval DEP${1}FLAGS=\$_flags
4331     fi
4332 }
4333
4334 probe_cc cc "$cc" "true"
4335 cflags_filter=$_flags_filter
4336 cflags_speed=$_cflags_speed
4337 cflags_size=$_cflags_size
4338 cflags_noopt=$_cflags_noopt
4339 add_cflags $_flags $_cflags
4340 cc_ldflags=$_ldflags
4341 set_ccvars CC
4342 set_ccvars CXX
4343
4344 probe_cc hostcc "$host_cc"
4345 host_cflags_filter=$_flags_filter
4346 host_cflags_speed=$_cflags_speed
4347 add_host_cflags  $_flags $_cflags
4348 set_ccvars HOSTCC
4349
4350 test -n "$cc_type" && enable $cc_type ||
4351     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4352
4353 : ${as_default:=$cc}
4354 : ${objcc_default:=$cc}
4355 : ${dep_cc_default:=$cc}
4356 : ${ld_default:=$cc}
4357 : ${host_ld_default:=$host_cc}
4358 set_default ar as objcc dep_cc ld ln_s host_ld windres
4359
4360 probe_cc as "$as"
4361 asflags_filter=$_flags_filter
4362 add_asflags $_flags $_cflags
4363 set_ccvars AS
4364
4365 probe_cc objcc "$objcc"
4366 objcflags_filter=$_flags_filter
4367 add_objcflags $_flags $_cflags
4368 set_ccvars OBJC
4369
4370 probe_cc ld "$ld"
4371 ldflags_filter=$_flags_filter
4372 add_ldflags $_flags $_ldflags
4373 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4374 LD_O=${_ld_o-$LD_O}
4375 LD_LIB=${_ld_lib-$LD_LIB}
4376 LD_PATH=${_ld_path-$LD_PATH}
4377
4378 probe_cc hostld "$host_ld"
4379 host_ldflags_filter=$_flags_filter
4380 add_host_ldflags $_flags $_ldflags
4381 HOSTLD_O=${_ld_o-$HOSTLD_O}
4382
4383 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4384     probe_cc depcc "$dep_cc"
4385     CCDEP=${_DEPCMD:-$DEPCMD}
4386     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4387     DEPCCFLAGS=$_flags
4388 fi
4389
4390 if $ar 2>&1 | grep -q Microsoft; then
4391     arflags="-nologo"
4392     ar_o='-out:$@'
4393 elif $ar 2>&1 | grep -q "\[D\] "; then
4394     arflags="rcD"
4395     ar_o='$@'
4396 else
4397     arflags="rc"
4398     ar_o='$@'
4399 fi
4400
4401 add_cflags $extra_cflags
4402 add_cxxflags $extra_cxxflags
4403 add_objcflags $extra_objcflags
4404 add_asflags $extra_cflags
4405
4406 if test -n "$sysroot"; then
4407     case "$cc_type" in
4408         gcc|llvm_gcc|clang)
4409             add_cppflags --sysroot="$sysroot"
4410             add_ldflags --sysroot="$sysroot"
4411         ;;
4412     esac
4413 fi
4414
4415 if test "$cpu" = host; then
4416     enabled cross_compile &&
4417         die "--cpu=host makes no sense when cross-compiling."
4418
4419     case "$cc_type" in
4420         gcc|llvm_gcc)
4421             check_native(){
4422                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4423                 sed -n "/cc1.*$1=/{
4424                             s/.*$1=\\([^ ]*\\).*/\\1/
4425                             p
4426                             q
4427                         }" $TMPE
4428             }
4429             cpu=$(check_native -march || check_native -mcpu)
4430         ;;
4431         clang)
4432             check_native(){
4433                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4434                 sed -n "/cc1.*-target-cpu /{
4435                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4436                             p
4437                             q
4438                         }" $TMPE
4439             }
4440             cpu=$(check_native -march)
4441         ;;
4442     esac
4443
4444     test "${cpu:-host}" = host &&
4445         die "--cpu=host not supported with compiler $cc"
4446 fi
4447
4448 # Deal with common $arch aliases
4449 case "$arch" in
4450     aarch64|arm64)
4451         arch="aarch64"
4452     ;;
4453     arm*|iPad*|iPhone*)
4454         arch="arm"
4455     ;;
4456     mips*|IP*)
4457         case "$arch" in
4458         *el)
4459             add_cppflags -EL
4460             add_ldflags -EL
4461         ;;
4462         *eb)
4463             add_cppflags -EB
4464             add_ldflags -EB
4465         ;;
4466         esac
4467         arch="mips"
4468     ;;
4469     parisc*|hppa*)
4470         arch="parisc"
4471     ;;
4472     "Power Macintosh"|ppc*|powerpc*)
4473         arch="ppc"
4474     ;;
4475     s390|s390x)
4476         arch="s390"
4477     ;;
4478     sh4|sh)
4479         arch="sh4"
4480     ;;
4481     sun4*|sparc*)
4482         arch="sparc"
4483     ;;
4484     tilegx|tile-gx)
4485         arch="tilegx"
4486     ;;
4487     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4488         arch="x86"
4489     ;;
4490 esac
4491
4492 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4493 enable $arch
4494
4495 # Add processor-specific flags
4496 if enabled aarch64; then
4497
4498     case $cpu in
4499         armv*)
4500             cpuflags="-march=$cpu"
4501         ;;
4502         *)
4503             cpuflags="-mcpu=$cpu"
4504         ;;
4505     esac
4506
4507 elif enabled alpha; then
4508
4509     cpuflags="-mcpu=$cpu"
4510
4511 elif enabled arm; then
4512
4513     check_arm_arch() {
4514         check_cpp_condition stddef.h \
4515             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4516             $cpuflags
4517     }
4518
4519     probe_arm_arch() {
4520         if   check_arm_arch 4;        then echo armv4
4521         elif check_arm_arch 4T;       then echo armv4t
4522         elif check_arm_arch 5;        then echo armv5
4523         elif check_arm_arch 5E;       then echo armv5e
4524         elif check_arm_arch 5T;       then echo armv5t
4525         elif check_arm_arch 5TE;      then echo armv5te
4526         elif check_arm_arch 5TEJ;     then echo armv5te
4527         elif check_arm_arch 6;        then echo armv6
4528         elif check_arm_arch 6J;       then echo armv6j
4529         elif check_arm_arch 6K;       then echo armv6k
4530         elif check_arm_arch 6Z;       then echo armv6z
4531         elif check_arm_arch 6ZK;      then echo armv6zk
4532         elif check_arm_arch 6T2;      then echo armv6t2
4533         elif check_arm_arch 7;        then echo armv7
4534         elif check_arm_arch 7A  7_A;  then echo armv7-a
4535         elif check_arm_arch 7S;       then echo armv7-a
4536         elif check_arm_arch 7R  7_R;  then echo armv7-r
4537         elif check_arm_arch 7M  7_M;  then echo armv7-m
4538         elif check_arm_arch 7EM 7E_M; then echo armv7-m
4539         elif check_arm_arch 8A  8_A;  then echo armv8-a
4540         fi
4541     }
4542
4543     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4544
4545     case $cpu in
4546         armv*)
4547             cpuflags="-march=$cpu"
4548             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4549         ;;
4550         *)
4551             cpuflags="-mcpu=$cpu"
4552             case $cpu in
4553                 cortex-a*)                               subarch=armv7a  ;;
4554                 cortex-r*)                               subarch=armv7r  ;;
4555                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4556                 arm11*)                                  subarch=armv6   ;;
4557                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4558                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4559                 *)                             subarch=$(probe_arm_arch) ;;
4560             esac
4561         ;;
4562     esac
4563
4564     case "$subarch" in
4565         armv5t*)    enable fast_clz                ;;
4566         armv[6-8]*)
4567             enable fast_clz
4568             disabled fast_unaligned || enable fast_unaligned
4569             ;;
4570     esac
4571
4572 elif enabled avr32; then
4573
4574     case $cpu in
4575         ap7[02]0[0-2])
4576             subarch="avr32_ap"
4577             cpuflags="-mpart=$cpu"
4578         ;;
4579         ap)
4580             subarch="avr32_ap"
4581             cpuflags="-march=$cpu"
4582         ;;
4583         uc3[ab]*)
4584             subarch="avr32_uc"
4585             cpuflags="-mcpu=$cpu"
4586         ;;
4587         uc)
4588             subarch="avr32_uc"
4589             cpuflags="-march=$cpu"
4590         ;;
4591     esac
4592
4593 elif enabled bfin; then
4594
4595     cpuflags="-mcpu=$cpu"
4596
4597 elif enabled mips; then
4598
4599     cpuflags="-march=$cpu"
4600
4601     if [ "$cpu" != "generic" ]; then
4602         disable mips32r2
4603         disable mips32r5
4604         disable mips64r2
4605         disable mips32r6
4606         disable mips64r6
4607         disable loongson2
4608         disable loongson3
4609
4610         case $cpu in
4611             24kc|24kf*|24kec|34kc|1004kc|24kef*|34kf*|1004kf*|74kc|74kf)
4612                 enable mips32r2
4613                 disable msa
4614             ;;
4615             p5600|i6400|p6600)
4616                 disable mipsdsp
4617                 disable mipsdspr2
4618             ;;
4619             loongson*)
4620                 enable loongson2
4621                 enable loongson3
4622                 enable local_aligned
4623                 enable simd_align_16
4624                 enable fast_64bit
4625                 enable fast_clz
4626                 enable fast_cmov
4627                 enable fast_unaligned
4628                 disable aligned_stack
4629                 disable mipsfpu
4630                 disable mipsdsp
4631                 disable mipsdspr2
4632                 case $cpu in
4633                     loongson3*)
4634                         cpuflags="-march=loongson3a -mhard-float -fno-expensive-optimizations"
4635                     ;;
4636                     loongson2e)
4637                         cpuflags="-march=loongson2e -mhard-float -fno-expensive-optimizations"
4638                     ;;
4639                     loongson2f)
4640                         cpuflags="-march=loongson2f -mhard-float -fno-expensive-optimizations"
4641                     ;;
4642                 esac
4643             ;;
4644             *)
4645                 # Unknown CPU. Disable everything.
4646                 warn "unknown CPU. Disabling all MIPS optimizations."
4647                 disable mipsfpu
4648                 disable mipsdsp
4649                 disable mipsdspr2
4650                 disable msa
4651                 disable mmi
4652             ;;
4653         esac
4654
4655         case $cpu in
4656             24kc)
4657                 disable mipsfpu
4658                 disable mipsdsp
4659                 disable mipsdspr2
4660             ;;
4661             24kf*)
4662                 disable mipsdsp
4663                 disable mipsdspr2
4664             ;;
4665             24kec|34kc|1004kc)
4666                 disable mipsfpu
4667                 disable mipsdspr2
4668             ;;
4669             24kef*|34kf*|1004kf*)
4670                 disable mipsdspr2
4671             ;;
4672             74kc)
4673                 disable mipsfpu
4674             ;;
4675             p5600)
4676                 enable mips32r5
4677                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
4678             ;;
4679             i6400)
4680                 enable mips64r6
4681                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4682             ;;
4683             p6600)
4684                 enable mips64r6
4685                 check_cflags "-mtune=p6600 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4686             ;;
4687         esac
4688     else
4689         # We do not disable anything. Is up to the user to disable the unwanted features.
4690         warn 'generic cpu selected'
4691     fi
4692
4693 elif enabled ppc; then
4694
4695     disable ldbrx
4696
4697     case $(tolower $cpu) in
4698         601|ppc601|powerpc601)
4699             cpuflags="-mcpu=601"
4700             disable altivec
4701         ;;
4702         603*|ppc603*|powerpc603*)
4703             cpuflags="-mcpu=603"
4704             disable altivec
4705         ;;
4706         604*|ppc604*|powerpc604*)
4707             cpuflags="-mcpu=604"
4708             disable altivec
4709         ;;
4710         g3|75*|ppc75*|powerpc75*)
4711             cpuflags="-mcpu=750"
4712             disable altivec
4713         ;;
4714         g4|745*|ppc745*|powerpc745*)
4715             cpuflags="-mcpu=7450"
4716             disable vsx
4717         ;;
4718         74*|ppc74*|powerpc74*)
4719             cpuflags="-mcpu=7400"
4720             disable vsx
4721         ;;
4722         g5|970|ppc970|powerpc970)
4723             cpuflags="-mcpu=970"
4724             disable vsx
4725         ;;
4726         power[3-6]*)
4727             cpuflags="-mcpu=$cpu"
4728             disable vsx
4729         ;;
4730         power[7-8]*)
4731             cpuflags="-mcpu=$cpu"
4732         ;;
4733         cell)
4734             cpuflags="-mcpu=cell"
4735             enable ldbrx
4736             disable vsx
4737         ;;
4738         e500mc)
4739             cpuflags="-mcpu=e500mc"
4740             disable altivec
4741         ;;
4742         e500v2)
4743             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
4744             disable altivec
4745             disable dcbzl
4746         ;;
4747         e500)
4748             cpuflags="-mcpu=8540 -mhard-float"
4749             disable altivec
4750             disable dcbzl
4751         ;;
4752     esac
4753
4754 elif enabled sparc; then
4755
4756     case $cpu in
4757         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
4758             cpuflags="-mcpu=$cpu"
4759         ;;
4760         ultrasparc*|niagara[234])
4761             cpuflags="-mcpu=$cpu"
4762         ;;
4763     esac
4764
4765 elif enabled x86; then
4766
4767     case $cpu in
4768         i[345]86|pentium)
4769             cpuflags="-march=$cpu"
4770             disable i686
4771             disable mmx
4772         ;;
4773         # targets that do NOT support nopl and conditional mov (cmov)
4774         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
4775             cpuflags="-march=$cpu"
4776             disable i686
4777         ;;
4778         # targets that do support nopl and conditional mov (cmov)
4779         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
4780         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|skylake*|knl\
4781         |amdfam10|barcelona|b[dt]ver*|znver*)
4782             cpuflags="-march=$cpu"
4783             enable i686
4784             enable fast_cmov
4785         ;;
4786         # targets that do support conditional mov but on which it's slow
4787         pentium4|pentium4m|prescott|nocona)
4788             cpuflags="-march=$cpu"
4789             enable i686
4790             disable fast_cmov
4791         ;;
4792     esac
4793
4794 fi
4795
4796 if [ "$cpu" != generic ]; then
4797     add_cflags  $cpuflags
4798     add_asflags $cpuflags
4799     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
4800 fi
4801
4802 # compiler sanity check
4803 check_exec <<EOF
4804 int main(void){ return 0; }
4805 EOF
4806 if test "$?" != 0; then
4807     echo "$cc is unable to create an executable file."
4808     if test -z "$cross_prefix" && ! enabled cross_compile ; then
4809         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
4810         echo "Only do this if you know what cross compiling means."
4811     fi
4812     die "C compiler test failed."
4813 fi
4814
4815 add_cppflags -D_ISOC99_SOURCE
4816 add_cxxflags -D__STDC_CONSTANT_MACROS
4817 check_cxxflags -std=c++11 || check_cxxflags -std=c++0x
4818
4819 # some compilers silently accept -std=c11, so we also need to check that the
4820 # version macro is defined properly
4821 test_cflags_cc -std=c11 ctype.h "__STDC_VERSION__ >= 201112L" &&
4822     add_cflags -std=c11 ||
4823     check_cflags -std=c99
4824
4825 check_cppflags -D_FILE_OFFSET_BITS=64
4826 check_cppflags -D_LARGEFILE_SOURCE
4827
4828 add_host_cppflags -D_ISOC99_SOURCE
4829 check_host_cflags -std=c99
4830 check_host_cflags -Wall
4831 check_host_cflags $host_cflags_speed
4832
4833 check_64bit(){
4834     arch32=$1
4835     arch64=$2
4836     expr=$3
4837     check_code cc "" "int test[2*($expr) - 1]" &&
4838         subarch=$arch64 || subarch=$arch32
4839     enable $subarch
4840 }
4841
4842 case "$arch" in
4843     aarch64|alpha|ia64)
4844         enabled shared && enable_weak pic
4845     ;;
4846     mips)
4847         check_64bit mips mips64 '_MIPS_SIM > 1'
4848         enabled shared && enable_weak pic
4849     ;;
4850     parisc)
4851         check_64bit parisc parisc64 'sizeof(void *) > 4'
4852         enabled shared && enable_weak pic
4853     ;;
4854     ppc)
4855         check_64bit ppc ppc64 'sizeof(void *) > 4'
4856         enabled shared && enable_weak pic
4857     ;;
4858     s390)
4859         check_64bit s390 s390x 'sizeof(void *) > 4'
4860         enabled shared && enable_weak pic
4861     ;;
4862     sparc)
4863         check_64bit sparc sparc64 'sizeof(void *) > 4'
4864         enabled shared && enable_weak pic
4865     ;;
4866     x86)
4867         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
4868         # Treat x32 as x64 for now. Note it also needs pic if shared
4869         test "$subarch" = "x86_32" && check_cpp_condition stddef.h 'defined(__x86_64__)' &&
4870             subarch=x86_64 && enable x86_64 && disable x86_32
4871         if enabled x86_64; then
4872             enabled shared && enable_weak pic
4873             objformat=elf64
4874         fi
4875     ;;
4876 esac
4877
4878 # OS specific
4879 case $target_os in
4880     aix)
4881         SHFLAGS=-shared
4882         add_cppflags '-I\$(SRC_PATH)/compat/aix'
4883         enabled shared && add_ldflags -Wl,-brtl
4884         arflags='-Xany -r -c'
4885         ;;
4886     android)
4887         disable symver
4888         enable section_data_rel_ro
4889         SLIB_INSTALL_NAME='$(SLIBNAME)'
4890         SLIB_INSTALL_LINKS=
4891         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
4892         ;;
4893     haiku)
4894         prefix_default="/boot/common"
4895         network_extralibs="-lnetwork"
4896         host_extralibs=
4897         ;;
4898     sunos)
4899         SHFLAGS='-shared -Wl,-h,$$(@F)'
4900         enabled x86 && append SHFLAGS -mimpure-text
4901         network_extralibs="-lsocket -lnsl"
4902         add_cppflags -D__EXTENSIONS__