lavc: Delete all fake hwaccels
[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   --enable-lv2             enable LV2 audio filtering [no]
287   --disable-lzma           disable lzma [autodetect]
288   --enable-decklink        enable Blackmagic DeckLink I/O support [no]
289   --enable-libndi_newtek   enable Newteck NDI I/O support [no]
290   --enable-mediacodec      enable Android MediaCodec support [no]
291   --enable-libmysofa       enable libmysofa, needed for sofalizer filter [no]
292   --enable-openal          enable OpenAL 1.1 capture support [no]
293   --enable-opencl          enable OpenCL processing [no]
294   --enable-opengl          enable OpenGL rendering [no]
295   --enable-openssl         enable openssl, needed for https support
296                            if gnutls is not used [no]
297   --disable-sndio          disable sndio support [autodetect]
298   --disable-schannel       disable SChannel SSP, needed for TLS support on
299                            Windows if openssl and gnutls are not used [autodetect]
300   --disable-sdl2           disable sdl2 [autodetect]
301   --disable-securetransport disable Secure Transport, needed for TLS support
302                            on OSX if openssl and gnutls are not used [autodetect]
303   --disable-xlib           disable xlib [autodetect]
304   --disable-zlib           disable zlib [autodetect]
305
306   The following libraries provide various hardware acceleration features:
307   --disable-audiotoolbox   disable Apple AudioToolbox code [autodetect]
308   --disable-cuda           disable dynamically linked Nvidia CUDA code [autodetect]
309   --enable-cuda-sdk        enable CUDA features that require the CUDA SDK [no]
310   --disable-cuvid          disable Nvidia CUVID support [autodetect]
311   --disable-d3d11va        disable Microsoft Direct3D 11 video acceleration code [autodetect]
312   --disable-dxva2          disable Microsoft DirectX 9 video acceleration code [autodetect]
313   --enable-libdrm          enable DRM code (Linux) [no]
314   --enable-libmfx          enable Intel MediaSDK (AKA Quick Sync Video) code via libmfx [no]
315   --enable-libnpp          enable Nvidia Performance Primitives-based code [no]
316   --enable-mmal            enable Broadcom Multi-Media Abstraction Layer (Raspberry Pi) via MMAL [no]
317   --disable-nvdec          disable Nvidia video decoding acceleration (via hwaccel) [autodetect]
318   --disable-nvenc          disable Nvidia video encoding code [autodetect]
319   --enable-omx             enable OpenMAX IL code [no]
320   --enable-omx-rpi         enable OpenMAX IL code for Raspberry Pi [no]
321   --enable-rkmpp           enable Rockchip Media Process Platform code [no]
322   --disable-vaapi          disable Video Acceleration API (mainly Unix/Intel) code [autodetect]
323   --disable-vdpau          disable Nvidia Video Decode and Presentation API for Unix code [autodetect]
324   --disable-videotoolbox   disable VideoToolbox code [autodetect]
325
326 Toolchain options:
327   --arch=ARCH              select architecture [$arch]
328   --cpu=CPU                select the minimum required CPU (affects
329                            instruction selection, may crash on older CPUs)
330   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
331   --progs-suffix=SUFFIX    program name suffix []
332   --enable-cross-compile   assume a cross-compiler is used
333   --sysroot=PATH           root of cross-build tree
334   --sysinclude=PATH        location of cross-build system headers
335   --target-os=OS           compiler targets OS [$target_os]
336   --target-exec=CMD        command to run executables on target
337   --target-path=DIR        path to view of build directory on target
338   --target-samples=DIR     path to samples directory on target
339   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
340   --toolchain=NAME         set tool defaults according to NAME
341   --nm=NM                  use nm tool NM [$nm_default]
342   --ar=AR                  use archive tool AR [$ar_default]
343   --as=AS                  use assembler AS [$as_default]
344   --ln_s=LN_S              use symbolic link tool LN_S [$ln_s_default]
345   --strip=STRIP            use strip tool STRIP [$strip_default]
346   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
347   --x86asmexe=EXE          use nasm-compatible assembler EXE [$x86asmexe_default]
348   --cc=CC                  use C compiler CC [$cc_default]
349   --cxx=CXX                use C compiler CXX [$cxx_default]
350   --objcc=OCC              use ObjC compiler OCC [$cc_default]
351   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
352   --nvcc=NVCC              use Nvidia CUDA compiler NVCC [$nvcc_default]
353   --ld=LD                  use linker LD [$ld_default]
354   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
355   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
356   --ranlib=RANLIB          use ranlib RANLIB [$ranlib_default]
357   --doxygen=DOXYGEN        use DOXYGEN to generate API doc [$doxygen_default]
358   --host-cc=HOSTCC         use host C compiler HOSTCC
359   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
360   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
361   --host-ld=HOSTLD         use host linker HOSTLD
362   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
363   --host-libs=HLIBS        use libs HLIBS when linking for host
364   --host-os=OS             compiler host OS [$target_os]
365   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
366   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
367   --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
368   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
369   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
370   --extra-ldsoflags=ELDFLAGS add ELDFLAGS to LDSOFLAGS [$LDSOFLAGS]
371   --extra-libs=ELIBS       add ELIBS [$ELIBS]
372   --extra-version=STRING   version string suffix []
373   --optflags=OPTFLAGS      override optimization-related compiler flags
374   --nvccflags=NVCCFLAGS    override nvcc flags [$nvccflags_default]
375   --build-suffix=SUFFIX    library name suffix []
376   --enable-pic             build position-independent code
377   --enable-thumb           compile for Thumb instruction set
378   --enable-lto             use link-time optimization
379   --env="ENV=override"     override the environment variables
380
381 Advanced options (experts only):
382   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
383   --custom-allocator=NAME  use a supported custom allocator
384   --disable-symver         disable symbol versioning
385   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
386   --disable-safe-bitstream-reader
387                            disable buffer boundary checking in bitreaders
388                            (faster, but may crash)
389   --sws-max-filter-size=N  the max filter size swscale uses [$sws_max_filter_size_default]
390
391 Optimization options (experts only):
392   --disable-asm            disable all assembly optimizations
393   --disable-altivec        disable AltiVec optimizations
394   --disable-vsx            disable VSX optimizations
395   --disable-power8         disable POWER8 optimizations
396   --disable-amd3dnow       disable 3DNow! optimizations
397   --disable-amd3dnowext    disable 3DNow! extended optimizations
398   --disable-mmx            disable MMX optimizations
399   --disable-mmxext         disable MMXEXT optimizations
400   --disable-sse            disable SSE optimizations
401   --disable-sse2           disable SSE2 optimizations
402   --disable-sse3           disable SSE3 optimizations
403   --disable-ssse3          disable SSSE3 optimizations
404   --disable-sse4           disable SSE4 optimizations
405   --disable-sse42          disable SSE4.2 optimizations
406   --disable-avx            disable AVX optimizations
407   --disable-xop            disable XOP optimizations
408   --disable-fma3           disable FMA3 optimizations
409   --disable-fma4           disable FMA4 optimizations
410   --disable-avx2           disable AVX2 optimizations
411   --disable-aesni          disable AESNI optimizations
412   --disable-armv5te        disable armv5te optimizations
413   --disable-armv6          disable armv6 optimizations
414   --disable-armv6t2        disable armv6t2 optimizations
415   --disable-vfp            disable VFP optimizations
416   --disable-neon           disable NEON optimizations
417   --disable-inline-asm     disable use of inline assembly
418   --disable-x86asm         disable use of standalone x86 assembly
419   --disable-mipsdsp        disable MIPS DSP ASE R1 optimizations
420   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
421   --disable-msa            disable MSA optimizations
422   --disable-mipsfpu        disable floating point MIPS optimizations
423   --disable-mmi            disable Loongson SIMD optimizations
424   --disable-fast-unaligned consider unaligned accesses slow
425
426 Developer options (useful when working on FFmpeg itself):
427   --disable-debug          disable debugging symbols
428   --enable-debug=LEVEL     set the debug level [$debuglevel]
429   --disable-optimizations  disable compiler optimizations
430   --enable-extra-warnings  enable more compiler warnings
431   --disable-stripping      disable stripping of executables and shared libraries
432   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
433                            2 causes a slowdown at runtime.
434   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
435   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
436                            leaks and errors, using the specified valgrind binary.
437                            Cannot be combined with --target-exec
438   --enable-ftrapv          Trap arithmetic overflows
439   --samples=PATH           location of test samples for FATE, if not set use
440                            \$FATE_SAMPLES at make invocation time.
441   --enable-neon-clobber-test check NEON registers for clobbering (should be
442                            used only for debugging purposes)
443   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
444                            should be used only for debugging purposes)
445   --enable-random          randomly enable/disable components
446   --disable-random
447   --enable-random=LIST     randomly enable/disable specific components or
448   --disable-random=LIST    component groups. LIST is a comma-separated list
449                            of NAME[:PROB] entries where NAME is a component
450                            (group) and PROB the probability associated with
451                            NAME (default 0.5).
452   --random-seed=VALUE      seed value for --enable/disable-random
453   --disable-valgrind-backtrace do not print a backtrace under Valgrind
454                            (only applies to --disable-optimizations builds)
455   --enable-osfuzz          Enable building fuzzer tool
456   --libfuzzer=PATH         path to libfuzzer
457   --ignore-tests=TESTS     comma-separated list (without "fate-" prefix
458                            in the name) of tests whose result is ignored
459   --enable-linux-perf      enable Linux Performance Monitor API
460
461 NOTE: Object files are built at the place where configure is launched.
462 EOF
463   exit 0
464 }
465
466 if test -t 1 && which tput >/dev/null 2>&1; then
467     ncolors=$(tput colors)
468     if test -n "$ncolors" && test $ncolors -ge 8; then
469         bold_color=$(tput bold)
470         warn_color=$(tput setaf 3)
471         error_color=$(tput setaf 1)
472         reset_color=$(tput sgr0)
473     fi
474     # 72 used instead of 80 since that's the default of pr
475     ncols=$(tput cols)
476 fi
477 : ${ncols:=72}
478
479 log(){
480     echo "$@" >> $logfile
481 }
482
483 log_file(){
484     log BEGIN $1
485     pr -n -t $1 >> $logfile
486     log END $1
487 }
488
489 warn(){
490     log "WARNING: $*"
491     WARNINGS="${WARNINGS}WARNING: $*\n"
492 }
493
494 die(){
495     log "$@"
496     echo "$error_color$bold_color$@$reset_color"
497     cat <<EOF
498
499 If you think configure made a mistake, make sure you are using the latest
500 version from Git.  If the latest version fails, report the problem to the
501 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
502 EOF
503     if disabled logging; then
504         cat <<EOF
505 Rerun configure with logging enabled (do not use --disable-logging), and
506 include the log this produces with your report.
507 EOF
508     else
509         cat <<EOF
510 Include the log file "$logfile" produced by configure as this will help
511 solve the problem.
512 EOF
513     fi
514     exit 1
515 }
516
517 # Avoid locale weirdness, besides we really just want to translate ASCII.
518 toupper(){
519     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
520 }
521
522 tolower(){
523     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
524 }
525
526 c_escape(){
527     echo "$*" | sed 's/["\\]/\\\0/g'
528 }
529
530 sh_quote(){
531     v=$(echo "$1" | sed "s/'/'\\\\''/g")
532     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
533     echo "$v"
534 }
535
536 cleanws(){
537     echo "$@" | sed 's/^ *//;s/[[:space:]][[:space:]]*/ /g;s/ *$//'
538 }
539
540 filter(){
541     pat=$1
542     shift
543     for v; do
544         eval "case '$v' in $pat) printf '%s ' '$v' ;; esac"
545     done
546 }
547
548 filter_out(){
549     pat=$1
550     shift
551     for v; do
552         eval "case '$v' in $pat) ;; *) printf '%s ' '$v' ;; esac"
553     done
554 }
555
556 map(){
557     m=$1
558     shift
559     for v; do eval $m; done
560 }
561
562 add_suffix(){
563     suffix=$1
564     shift
565     for v; do echo ${v}${suffix}; done
566 }
567
568 set_all(){
569     value=$1
570     shift
571     for var in $*; do
572         eval $var=$value
573     done
574 }
575
576 set_weak(){
577     value=$1
578     shift
579     for var; do
580         eval : \${$var:=$value}
581     done
582 }
583
584 sanitize_var_name(){
585     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
586 }
587
588 set_sanitized(){
589     var=$1
590     shift
591     eval $(sanitize_var_name "$var")='$*'
592 }
593
594 get_sanitized(){
595     eval echo \$$(sanitize_var_name "$1")
596 }
597
598 pushvar(){
599     for pvar in $*; do
600         eval level=\${${pvar}_level:=0}
601         eval ${pvar}_${level}="\$$pvar"
602         eval ${pvar}_level=$(($level+1))
603     done
604 }
605
606 popvar(){
607     for pvar in $*; do
608         eval level=\${${pvar}_level:-0}
609         test $level = 0 && continue
610         eval level=$(($level-1))
611         eval $pvar="\${${pvar}_${level}}"
612         eval ${pvar}_level=$level
613         eval unset ${pvar}_${level}
614     done
615 }
616
617 request(){
618     for var in $*; do
619         eval ${var}_requested=yes
620         eval $var=
621     done
622 }
623
624 enable(){
625     set_all yes $*
626 }
627
628 disable(){
629     set_all no $*
630 }
631
632 enable_weak(){
633     set_weak yes $*
634 }
635
636 disable_weak(){
637     set_weak no $*
638 }
639
640 enable_sanitized(){
641     for var; do
642         enable $(sanitize_var_name $var)
643     done
644 }
645
646 disable_sanitized(){
647     for var; do
648         disable $(sanitize_var_name $var)
649     done
650 }
651
652 do_enable_deep(){
653     for var; do
654         enabled $var && continue
655         eval sel="\$${var}_select"
656         eval sgs="\$${var}_suggest"
657         pushvar var sgs
658         enable_deep $sel
659         popvar sgs
660         enable_deep_weak $sgs
661         popvar var
662     done
663 }
664
665 enable_deep(){
666     do_enable_deep $*
667     enable $*
668 }
669
670 enable_deep_weak(){
671     for var; do
672         disabled $var && continue
673         pushvar var
674         do_enable_deep $var
675         popvar var
676         enable_weak $var
677     done
678 }
679
680 requested(){
681     test "${1#!}" = "$1" && op="=" || op="!="
682     eval test "x\$${1#!}_requested" $op "xyes"
683 }
684
685 enabled(){
686     test "${1#!}" = "$1" && op="=" || op="!="
687     eval test "x\$${1#!}" $op "xyes"
688 }
689
690 disabled(){
691     test "${1#!}" = "$1" && op="=" || op="!="
692     eval test "x\$${1#!}" $op "xno"
693 }
694
695 enabled_all(){
696     for opt; do
697         enabled $opt || return 1
698     done
699 }
700
701 disabled_all(){
702     for opt; do
703         disabled $opt || return 1
704     done
705 }
706
707 enabled_any(){
708     for opt; do
709         enabled $opt && return 0
710     done
711 }
712
713 disabled_any(){
714     for opt; do
715         disabled $opt && return 0
716     done
717     return 1
718 }
719
720 set_default(){
721     for opt; do
722         eval : \${$opt:=\$${opt}_default}
723     done
724 }
725
726 is_in(){
727     value=$1
728     shift
729     for var in $*; do
730         [ $var = $value ] && return 0
731     done
732     return 1
733 }
734
735 check_deps(){
736     for cfg; do
737         enabled ${cfg}_checking && die "Circular dependency for $cfg."
738         disabled ${cfg}_checking && continue
739         enable ${cfg}_checking
740
741         eval dep_all="\$${cfg}_deps"
742         eval dep_any="\$${cfg}_deps_any"
743         eval dep_con="\$${cfg}_conflict"
744         eval dep_sel="\$${cfg}_select"
745         eval dep_sgs="\$${cfg}_suggest"
746         eval dep_ifa="\$${cfg}_if"
747         eval dep_ifn="\$${cfg}_if_any"
748
749         pushvar cfg dep_all dep_any dep_con dep_sel dep_sgs dep_ifa dep_ifn
750         check_deps $dep_all $dep_any $dep_con $dep_sel $dep_sgs $dep_ifa $dep_ifn
751         popvar cfg dep_all dep_any dep_con dep_sel dep_sgs dep_ifa dep_ifn
752
753         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
754         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
755         enabled_all  $dep_all || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but not all dependencies are satisfied: $dep_all"; }
756         enabled_any  $dep_any || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but not any dependency is satisfied: $dep_any"; }
757         disabled_all $dep_con || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but some conflicting dependencies are unsatisfied: $dep_con"; }
758         disabled_any $dep_sel && { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but some selected dependency is unsatisfied: $dep_sel"; }
759
760         enabled $cfg && enable_deep_weak $dep_sel $dep_sgs
761
762         for dep in $dep_all $dep_any $dep_sel $dep_sgs; do
763             # filter out library deps, these do not belong in extralibs
764             is_in $dep $LIBRARY_LIST && continue
765             enabled $dep && eval append ${cfg}_extralibs ${dep}_extralibs
766         done
767
768         disable ${cfg}_checking
769     done
770 }
771
772 print_config(){
773     pfx=$1
774     files=$2
775     shift 2
776     map 'eval echo "$v \${$v:-no}"' "$@" |
777     awk "BEGIN { split(\"$files\", files) }
778         {
779             c = \"$pfx\" toupper(\$1);
780             v = \$2;
781             sub(/yes/, 1, v);
782             sub(/no/,  0, v);
783             for (f in files) {
784                 file = files[f];
785                 if (file ~ /\\.h\$/) {
786                     printf(\"#define %s %d\\n\", c, v) >>file;
787                 } else if (file ~ /\\.asm\$/) {
788                     printf(\"%%define %s %d\\n\", c, v) >>file;
789                 } else if (file ~ /\\.mak\$/) {
790                     n = -v ? \"\" : \"!\";
791                     printf(\"%s%s=yes\\n\", n, c) >>file;
792                 } else if (file ~ /\\.texi\$/) {
793                     pre = -v ? \"\" : \"@c \";
794                     yesno = \$2;
795                     c2 = tolower(c);
796                     gsub(/_/, \"-\", c2);
797                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
798                 }
799             }
800         }"
801 }
802
803 print_enabled(){
804     suf=$1
805     shift
806     for v; do
807         enabled $v && printf "%s\n" ${v%$suf}
808     done
809 }
810
811 append(){
812     var=$1
813     shift
814     eval "$var=\"\$$var $*\""
815 }
816
817 prepend(){
818     var=$1
819     shift
820     eval "$var=\"$* \$$var\""
821 }
822
823 unique(){
824     var=$1
825     uniq_list=""
826     for tok in $(eval echo \$$var); do
827         uniq_list="$(filter_out $tok $uniq_list) $tok"
828     done
829     eval "$var=\"${uniq_list}\""
830 }
831
832 resolve(){
833     var=$1
834     tmpvar=
835     for entry in $(eval echo \$$var); do
836         tmpvar="$tmpvar $(eval echo \$${entry})"
837     done
838     eval "$var=\"${tmpvar}\""
839 }
840
841 add_cppflags(){
842     append CPPFLAGS "$@"
843 }
844
845 add_cflags(){
846     append CFLAGS $($cflags_filter "$@")
847 }
848
849 add_cflags_headers(){
850     append CFLAGS_HEADERS $($cflags_filter "$@")
851 }
852
853 add_cxxflags(){
854     append CXXFLAGS $($cflags_filter "$@")
855 }
856
857 add_asflags(){
858     append ASFLAGS $($asflags_filter "$@")
859 }
860
861 add_objcflags(){
862     append OBJCFLAGS $($objcflags_filter "$@")
863 }
864
865 add_ldflags(){
866     append LDFLAGS $($ldflags_filter "$@")
867 }
868
869 add_ldexeflags(){
870     append LDEXEFLAGS $($ldflags_filter "$@")
871 }
872
873 add_ldsoflags(){
874     append LDSOFLAGS $($ldflags_filter "$@")
875 }
876
877 add_stripflags(){
878     append ASMSTRIPFLAGS "$@"
879 }
880
881 add_extralibs(){
882     prepend extralibs $($ldflags_filter "$@")
883 }
884
885 add_host_cppflags(){
886     append host_cppflags "$@"
887 }
888
889 add_host_cflags(){
890     append host_cflags $($host_cflags_filter "$@")
891 }
892
893 add_host_ldflags(){
894     append host_ldflags $($host_ldflags_filter "$@")
895 }
896
897 add_compat(){
898     append compat_objs $1
899     shift
900     map 'add_cppflags -D$v' "$@"
901 }
902
903 check_cmd(){
904     log "$@"
905     "$@" >> $logfile 2>&1
906 }
907
908 check_stat(){
909     log check_stat "$@"
910     stat "$1" >> $logfile 2>&1
911 }
912
913 cc_o(){
914     eval printf '%s\\n' $CC_O
915 }
916
917 cc_e(){
918     eval printf '%s\\n' $CC_E
919 }
920
921 check_cc(){
922     log check_cc "$@"
923     cat > $TMPC
924     log_file $TMPC
925     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
926 }
927
928 check_cxx(){
929     log check_cxx "$@"
930     cat > $TMPCPP
931     log_file $TMPCPP
932     check_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
933 }
934
935 check_objcc(){
936     log check_objcc "$@"
937     cat > $TMPM
938     log_file $TMPM
939     check_cmd $objcc -Werror=missing-prototypes $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPM
940 }
941
942 check_cpp(){
943     log check_cpp "$@"
944     cat > $TMPC
945     log_file $TMPC
946     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
947 }
948
949 as_o(){
950     eval printf '%s\\n' $AS_O
951 }
952
953 check_as(){
954     log check_as "$@"
955     cat > $TMPS
956     log_file $TMPS
957     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
958 }
959
960 check_inline_asm(){
961     log check_inline_asm "$@"
962     name="$1"
963     code="$2"
964     shift 2
965     disable $name
966     check_cc "$@" <<EOF && enable $name
967 void foo(void){ __asm__ volatile($code); }
968 EOF
969 }
970
971 check_inline_asm_flags(){
972     log check_inline_asm_flags "$@"
973     name="$1"
974     code="$2"
975     flags=''
976     shift 2
977     while [ "$1" != "" ]; do
978       append flags $1
979       shift
980     done;
981     disable $name
982     cat > $TMPC <<EOF
983 void foo(void){ __asm__ volatile($code); }
984 EOF
985     log_file $TMPC
986     check_cmd $cc $CPPFLAGS $CFLAGS $flags "$@" $CC_C $(cc_o $TMPO) $TMPC &&
987     enable $name && add_cflags $flags && add_asflags $flags && add_ldflags $flags
988 }
989
990 check_insn(){
991     log check_insn "$@"
992     check_inline_asm ${1}_inline "\"$2\""
993     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
994 }
995
996 check_x86asm(){
997     log check_x86asm "$@"
998     echo "$1" > $TMPS
999     log_file $TMPS
1000     shift 1
1001     check_cmd $x86asmexe $X86ASMFLAGS -Werror "$@" -o $TMPO $TMPS
1002 }
1003
1004 ld_o(){
1005     eval printf '%s\\n' $LD_O
1006 }
1007
1008 check_ld(){
1009     log check_ld "$@"
1010     type=$1
1011     shift 1
1012     flags=$(filter_out '-l*|*.so' $@)
1013     libs=$(filter '-l*|*.so' $@)
1014     check_$type $($cflags_filter $flags) || return
1015     flags=$($ldflags_filter $flags)
1016     libs=$($ldflags_filter $libs)
1017     check_cmd $ld $LDFLAGS $LDEXEFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
1018 }
1019
1020 print_include(){
1021     hdr=$1
1022     test "${hdr%.h}" = "${hdr}" &&
1023         echo "#include $hdr"    ||
1024         echo "#include <$hdr>"
1025 }
1026
1027 check_code(){
1028     log check_code "$@"
1029     check=$1
1030     headers=$2
1031     code=$3
1032     shift 3
1033     {
1034         for hdr in $headers; do
1035             print_include $hdr
1036         done
1037         echo "int main(void) { $code; return 0; }"
1038     } | check_$check "$@"
1039 }
1040
1041 check_cppflags(){
1042     log check_cppflags "$@"
1043     check_cpp "$@" <<EOF && append CPPFLAGS "$@"
1044 #include <stdlib.h>
1045 EOF
1046 }
1047
1048 test_cflags(){
1049     log test_cflags "$@"
1050     set -- $($cflags_filter "$@")
1051     check_cc "$@" <<EOF
1052 int x;
1053 EOF
1054 }
1055
1056 check_cflags(){
1057     log check_cflags "$@"
1058     test_cflags "$@" && add_cflags "$@"
1059 }
1060
1061 check_cxxflags(){
1062     log check_cxxflags "$@"
1063     set -- $($cflags_filter "$@")
1064     check_cxx "$@" <<EOF && append CXXFLAGS "$@"
1065 int x;
1066 EOF
1067 }
1068
1069 test_objcflags(){
1070     log test_objcflags "$@"
1071     set -- $($objcflags_filter "$@")
1072     check_objcc "$@" <<EOF
1073 int x;
1074 EOF
1075 }
1076
1077 check_objcflags(){
1078     log check_objcflags "$@"
1079     test_objcflags "$@" && add_objcflags "$@"
1080 }
1081
1082 test_ldflags(){
1083     log test_ldflags "$@"
1084     set -- $($ldflags_filter "$@")
1085     check_ld "cc" "$@" <<EOF
1086 int main(void){ return 0; }
1087 EOF
1088 }
1089
1090 check_ldflags(){
1091     log check_ldflags "$@"
1092     test_ldflags "$@" && add_ldflags "$@"
1093 }
1094
1095 test_stripflags(){
1096     log test_stripflags "$@"
1097     # call check_cc to get a fresh TMPO
1098     check_cc <<EOF
1099 int main(void) { return 0; }
1100 EOF
1101     check_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
1102 }
1103
1104 check_stripflags(){
1105     log check_stripflags "$@"
1106     test_stripflags "$@" && add_stripflags "$@"
1107 }
1108
1109 check_header(){
1110     log check_header "$@"
1111     headers=$1
1112     shift
1113     disable_sanitized $headers
1114     {
1115         for hdr in $headers; do
1116             print_include $hdr
1117         done
1118         echo "int x;"
1119     } | check_cpp "$@" && enable_sanitized $headers
1120 }
1121
1122 check_header_objcc(){
1123     log check_header_objcc "$@"
1124     rm -f -- "$TMPO"
1125     header=$1
1126     shift
1127     disable_sanitized $header
1128     {
1129        echo "#include <$header>"
1130        echo "int main(void) { return 0; }"
1131     } | check_objcc && check_stat "$TMPO" && enable_sanitized $header
1132 }
1133
1134 check_apple_framework(){
1135     log check_apple_framework "$@"
1136     framework="$1"
1137     name="$(tolower $framework)"
1138     header="${framework}/${framework}.h"
1139     disable $name
1140     check_header_objcc $header &&
1141         enable $name && eval ${name}_extralibs='"-framework $framework"'
1142 }
1143
1144 check_func(){
1145     log check_func "$@"
1146     func=$1
1147     shift
1148     disable $func
1149     check_ld "cc" "$@" <<EOF && enable $func
1150 extern int $func();
1151 int main(void){ $func(); }
1152 EOF
1153 }
1154
1155 check_complexfunc(){
1156     log check_complexfunc "$@"
1157     func=$1
1158     narg=$2
1159     shift 2
1160     test $narg = 2 && args="f, g" || args="f * I"
1161     disable $func
1162     check_ld "cc" "$@" <<EOF && enable $func
1163 #include <complex.h>
1164 #include <math.h>
1165 float foo(complex float f, complex float g) { return $func($args); }
1166 int main(void){ return (int) foo; }
1167 EOF
1168 }
1169
1170 check_mathfunc(){
1171     log check_mathfunc "$@"
1172     func=$1
1173     narg=$2
1174     shift 2
1175     test $narg = 2 && args="f, g" || args="f"
1176     disable $func
1177     check_ld "cc" "$@" <<EOF && enable $func
1178 #include <math.h>
1179 float foo(float f, float g) { return $func($args); }
1180 int main(void){ return (int) foo; }
1181 EOF
1182 }
1183
1184 check_func_headers(){
1185     log check_func_headers "$@"
1186     headers=$1
1187     funcs=$2
1188     shift 2
1189     {
1190         for hdr in $headers; do
1191             print_include $hdr
1192         done
1193         echo "#include <stdint.h>"
1194         for func in $funcs; do
1195             echo "long check_$func(void) { return (long) $func; }"
1196         done
1197         echo "int main(void) { int ret = 0;"
1198         # LTO could optimize out the test functions without this
1199         for func in $funcs; do
1200             echo " ret |= ((intptr_t)check_$func) & 0xFFFF;"
1201         done
1202         echo "return ret; }"
1203     } | check_ld "cc" "$@" && enable $funcs && enable_sanitized $headers
1204 }
1205
1206 check_class_headers_cpp(){
1207     log check_class_headers_cpp "$@"
1208     headers=$1
1209     classes=$2
1210     shift 2
1211     {
1212         for hdr in $headers; do
1213             echo "#include <$hdr>"
1214         done
1215         echo "int main(void) { "
1216         i=1
1217         for class in $classes; do
1218             echo "$class obj$i;"
1219             i=$(expr $i + 1)
1220         done
1221         echo "return 0; }"
1222     } | check_ld "cxx" "$@" && enable $funcs && enable_sanitized $headers
1223 }
1224
1225 check_cpp_condition(){
1226     log check_cpp_condition "$@"
1227     header=$1
1228     condition=$2
1229     shift 2
1230     check_cpp "$@" <<EOF
1231 #include <$header>
1232 #if !($condition)
1233 #error "unsatisfied condition: $condition"
1234 #endif
1235 EOF
1236 }
1237
1238 test_cflags_cc(){
1239     log test_cflags_cc "$@"
1240     flags=$1
1241     header=$2
1242     condition=$3
1243     shift 3
1244     set -- $($cflags_filter "$flags")
1245     check_cc "$@" <<EOF
1246 #include <$header>
1247 #if !($condition)
1248 #error "unsatisfied condition: $condition"
1249 #endif
1250 EOF
1251 }
1252
1253 check_lib(){
1254     log check_lib "$@"
1255     name="$1"
1256     headers="$2"
1257     funcs="$3"
1258     shift 3
1259     disable $name
1260     check_func_headers "$headers" "$funcs" "$@" &&
1261         enable $name && eval ${name}_extralibs="\$@"
1262 }
1263
1264 check_lib_cpp(){
1265     log check_lib_cpp "$@"
1266     name="$1"
1267     headers="$2"
1268     classes="$3"
1269     shift 3
1270     disable $name
1271     check_class_headers_cpp "$headers" "$classes" "$@" &&
1272         enable $name && eval ${name}_extralibs="\$@"
1273 }
1274
1275 test_pkg_config(){
1276     log test_pkg_config "$@"
1277     name="$1"
1278     pkg_version="$2"
1279     pkg="${2%% *}"
1280     headers="$3"
1281     funcs="$4"
1282     shift 4
1283     disable $name
1284     check_cmd $pkg_config --exists --print-errors $pkg_version || return
1285     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1286     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1287     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1288         enable $name &&
1289         set_sanitized "${name}_cflags"    $pkg_cflags &&
1290         set_sanitized "${name}_extralibs" $pkg_libs
1291 }
1292
1293 check_pkg_config(){
1294     log check_pkg_config "$@"
1295     name="$1"
1296     test_pkg_config "$@" &&
1297         eval add_cflags \$${name}_cflags
1298 }
1299
1300 check_exec(){
1301     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1302 }
1303
1304 check_exec_crash(){
1305     log check_exec_crash "$@"
1306     code=$(cat)
1307
1308     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1309     # are safe but may not be available everywhere.  Thus we use
1310     # raise(SIGTERM) instead.  The check is run in a subshell so we
1311     # can redirect the "Terminated" message from the shell.  SIGBUS
1312     # is not defined by standard C so it is used conditionally.
1313
1314     (check_exec "$@") >> $logfile 2>&1 <<EOF
1315 #include <signal.h>
1316 static void sighandler(int sig){
1317     raise(SIGTERM);
1318 }
1319 int foo(void){
1320     $code
1321 }
1322 int (*func_ptr)(void) = foo;
1323 int main(void){
1324     signal(SIGILL, sighandler);
1325     signal(SIGFPE, sighandler);
1326     signal(SIGSEGV, sighandler);
1327 #ifdef SIGBUS
1328     signal(SIGBUS, sighandler);
1329 #endif
1330     return func_ptr();
1331 }
1332 EOF
1333 }
1334
1335 check_type(){
1336     log check_type "$@"
1337     headers=$1
1338     type=$2
1339     shift 2
1340     disable_sanitized "$type"
1341     check_code cc "$headers" "$type v" "$@" && enable_sanitized "$type"
1342 }
1343
1344 check_struct(){
1345     log check_struct "$@"
1346     headers=$1
1347     struct=$2
1348     member=$3
1349     shift 3
1350     disable_sanitized "${struct}_${member}"
1351     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1352         enable_sanitized "${struct}_${member}"
1353 }
1354
1355 check_builtin(){
1356     log check_builtin "$@"
1357     name=$1
1358     headers=$2
1359     builtin=$3
1360     shift 3
1361     disable "$name"
1362     check_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1363 }
1364
1365 check_compile_assert(){
1366     log check_compile_assert "$@"
1367     name=$1
1368     headers=$2
1369     condition=$3
1370     shift 3
1371     disable "$name"
1372     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1373 }
1374
1375 require(){
1376     log require "$@"
1377     name_version="$1"
1378     name="${1%% *}"
1379     headers="$2"
1380     func="$3"
1381     shift 3
1382     check_lib $name "$headers" $func "$@" || die "ERROR: $name_version not found"
1383 }
1384
1385 require_cpp(){
1386     name="$1"
1387     headers="$2"
1388     classes="$3"
1389     shift 3
1390     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1391 }
1392
1393 require_header(){
1394     log require_header "$@"
1395     headers="$1"
1396     shift
1397     check_header "$headers" "$@" || die "ERROR: $headers not found"
1398 }
1399
1400 require_cpp_condition(){
1401     log require_cpp_condition "$@"
1402     header="$1"
1403     condition="$2"
1404     shift 2
1405     check_cpp_condition "$header" "$condition" "$@" || die "ERROR: $condition not satisfied"
1406 }
1407
1408 require_pkg_config(){
1409     log require_pkg_config "$@"
1410     pkg_version="$2"
1411     check_pkg_config "$@" || die "ERROR: $pkg_version not found using pkg-config$pkg_config_fail_message"
1412 }
1413
1414 hostcc_e(){
1415     eval printf '%s\\n' $HOSTCC_E
1416 }
1417
1418 hostcc_o(){
1419     eval printf '%s\\n' $HOSTCC_O
1420 }
1421
1422 check_host_cc(){
1423     log check_host_cc "$@"
1424     cat > $TMPC
1425     log_file $TMPC
1426     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1427 }
1428
1429 check_host_cpp(){
1430     log check_host_cpp "$@"
1431     cat > $TMPC
1432     log_file $TMPC
1433     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1434 }
1435
1436 check_host_cppflags(){
1437     log check_host_cppflags "$@"
1438     check_host_cpp "$@" <<EOF && append host_cppflags "$@"
1439 #include <stdlib.h>
1440 EOF
1441 }
1442
1443 check_host_cflags(){
1444     log check_host_cflags "$@"
1445     set -- $($host_cflags_filter "$@")
1446     check_host_cc "$@" <<EOF && append host_cflags "$@"
1447 int x;
1448 EOF
1449 }
1450
1451 check_host_cpp_condition(){
1452     log check_host_cpp_condition "$@"
1453     header=$1
1454     condition=$2
1455     shift 2
1456     check_host_cpp "$@" <<EOF
1457 #include <$header>
1458 #if !($condition)
1459 #error "unsatisfied condition: $condition"
1460 #endif
1461 EOF
1462 }
1463
1464 cp_if_changed(){
1465     cmp -s "$1" "$2" && { test "$quiet" != "yes" && echo "$2 is unchanged"; } && return
1466     mkdir -p "$(dirname $2)"
1467     cp -f "$1" "$2"
1468 }
1469
1470 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1471 # system-dependent things.
1472
1473 AVCODEC_COMPONENTS="
1474     bsfs
1475     decoders
1476     encoders
1477     hwaccels
1478     parsers
1479 "
1480
1481 AVDEVICE_COMPONENTS="
1482     indevs
1483     outdevs
1484 "
1485
1486 AVFILTER_COMPONENTS="
1487     filters
1488 "
1489
1490 AVFORMAT_COMPONENTS="
1491     demuxers
1492     muxers
1493     protocols
1494 "
1495
1496 COMPONENT_LIST="
1497     $AVCODEC_COMPONENTS
1498     $AVDEVICE_COMPONENTS
1499     $AVFILTER_COMPONENTS
1500     $AVFORMAT_COMPONENTS
1501 "
1502
1503 EXAMPLE_LIST="
1504     avio_dir_cmd_example
1505     avio_reading_example
1506     decode_audio_example
1507     decode_video_example
1508     demuxing_decoding_example
1509     encode_audio_example
1510     encode_video_example
1511     extract_mvs_example
1512     filter_audio_example
1513     filtering_audio_example
1514     filtering_video_example
1515     http_multiclient_example
1516     hw_decode_example
1517     metadata_example
1518     muxing_example
1519     qsvdec_example
1520     remuxing_example
1521     resampling_audio_example
1522     scaling_video_example
1523     transcode_aac_example
1524     transcoding_example
1525 "
1526
1527 EXTERNAL_AUTODETECT_LIBRARY_LIST="
1528     alsa
1529     appkit
1530     avfoundation
1531     bzlib
1532     coreimage
1533     iconv
1534     libxcb
1535     libxcb_shm
1536     libxcb_shape
1537     libxcb_xfixes
1538     lzma
1539     schannel
1540     sdl2
1541     securetransport
1542     sndio
1543     xlib
1544     zlib
1545 "
1546
1547 EXTERNAL_LIBRARY_GPL_LIST="
1548     avisynth
1549     frei0r
1550     libcdio
1551     librubberband
1552     libvidstab
1553     libx264
1554     libx265
1555     libxavs
1556     libxvid
1557 "
1558
1559 EXTERNAL_LIBRARY_NONFREE_LIST="
1560     decklink
1561     libndi_newtek
1562     libfdk_aac
1563     openssl
1564 "
1565
1566 EXTERNAL_LIBRARY_VERSION3_LIST="
1567     gmp
1568     libopencore_amrnb
1569     libopencore_amrwb
1570     libvmaf
1571     libvo_amrwbenc
1572     rkmpp
1573 "
1574
1575 EXTERNAL_LIBRARY_GPLV3_LIST="
1576     libsmbclient
1577 "
1578
1579 EXTERNAL_LIBRARY_LIST="
1580     $EXTERNAL_LIBRARY_GPL_LIST
1581     $EXTERNAL_LIBRARY_NONFREE_LIST
1582     $EXTERNAL_LIBRARY_VERSION3_LIST
1583     $EXTERNAL_LIBRARY_GPLV3_LIST
1584     chromaprint
1585     gcrypt
1586     gnutls
1587     jni
1588     ladspa
1589     libass
1590     libbluray
1591     libbs2b
1592     libcaca
1593     libcelt
1594     libdc1394
1595     libdrm
1596     libflite
1597     libfontconfig
1598     libfreetype
1599     libfribidi
1600     libgme
1601     libgsm
1602     libiec61883
1603     libilbc
1604     libjack
1605     libkvazaar
1606     libmodplug
1607     libmp3lame
1608     libmysofa
1609     libopencv
1610     libopenh264
1611     libopenjpeg
1612     libopenmpt
1613     libopus
1614     libpulse
1615     librsvg
1616     librtmp
1617     libshine
1618     libsmbclient
1619     libsnappy
1620     libsoxr
1621     libspeex
1622     libssh
1623     libtesseract
1624     libtheora
1625     libtwolame
1626     libv4l2
1627     libvorbis
1628     libvpx
1629     libwavpack
1630     libwebp
1631     libxml2
1632     libzimg
1633     libzmq
1634     libzvbi
1635     lv2
1636     mediacodec
1637     openal
1638     opengl
1639 "
1640
1641 HWACCEL_AUTODETECT_LIBRARY_LIST="
1642     audiotoolbox
1643     crystalhd
1644     cuda
1645     cuvid
1646     d3d11va
1647     dxva2
1648     nvdec
1649     nvenc
1650     vaapi
1651     vdpau
1652     videotoolbox
1653     v4l2_m2m
1654     xvmc
1655 "
1656
1657 # catchall list of things that require external libs to link
1658 EXTRALIBS_LIST="
1659     cpu_init
1660     cws2fws
1661 "
1662
1663 HWACCEL_LIBRARY_NONFREE_LIST="
1664     cuda_sdk
1665     libnpp
1666 "
1667
1668 HWACCEL_LIBRARY_LIST="
1669     $HWACCEL_LIBRARY_NONFREE_LIST
1670     libmfx
1671     mmal
1672     omx
1673     opencl
1674 "
1675
1676 DOCUMENT_LIST="
1677     doc
1678     htmlpages
1679     manpages
1680     podpages
1681     txtpages
1682 "
1683
1684 FEATURE_LIST="
1685     ftrapv
1686     gray
1687     hardcoded_tables
1688     omx_rpi
1689     runtime_cpudetect
1690     safe_bitstream_reader
1691     shared
1692     small
1693     static
1694     swscale_alpha
1695 "
1696
1697 LIBRARY_LIST="
1698     avcodec
1699     avdevice
1700     avfilter
1701     avformat
1702     avresample
1703     avutil
1704     postproc
1705     swresample
1706     swscale
1707 "
1708
1709 LICENSE_LIST="
1710     gpl
1711     nonfree
1712     version3
1713 "
1714
1715 PROGRAM_LIST="
1716     ffplay
1717     ffprobe
1718     ffserver
1719     ffmpeg
1720 "
1721
1722 SUBSYSTEM_LIST="
1723     dct
1724     dwt
1725     error_resilience
1726     faan
1727     fast_unaligned
1728     fft
1729     lsp
1730     lzo
1731     mdct
1732     pixelutils
1733     network
1734     rdft
1735 "
1736
1737 # COMPONENT_LIST needs to come last to ensure correct dependency checking
1738 CONFIG_LIST="
1739     $DOCUMENT_LIST
1740     $EXAMPLE_LIST
1741     $EXTERNAL_LIBRARY_LIST
1742     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1743     $HWACCEL_LIBRARY_LIST
1744     $HWACCEL_AUTODETECT_LIBRARY_LIST
1745     $FEATURE_LIST
1746     $LICENSE_LIST
1747     $LIBRARY_LIST
1748     $PROGRAM_LIST
1749     $SUBSYSTEM_LIST
1750     autodetect
1751     fontconfig
1752     linux_perf
1753     memory_poisoning
1754     neon_clobber_test
1755     ossfuzz
1756     pic
1757     thumb
1758     valgrind_backtrace
1759     xmm_clobber_test
1760     $COMPONENT_LIST
1761 "
1762
1763 THREADS_LIST="
1764     pthreads
1765     os2threads
1766     w32threads
1767 "
1768
1769 ATOMICS_LIST="
1770     atomics_gcc
1771     atomics_suncc
1772     atomics_win32
1773 "
1774
1775 AUTODETECT_LIBS="
1776     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1777     $HWACCEL_AUTODETECT_LIBRARY_LIST
1778     $THREADS_LIST
1779 "
1780
1781 ARCH_LIST="
1782     aarch64
1783     alpha
1784     arm
1785     avr32
1786     avr32_ap
1787     avr32_uc
1788     bfin
1789     ia64
1790     m68k
1791     mips
1792     mips64
1793     parisc
1794     ppc
1795     ppc64
1796     s390
1797     sh4
1798     sparc
1799     sparc64
1800     tilegx
1801     tilepro
1802     tomi
1803     x86
1804     x86_32
1805     x86_64
1806 "
1807
1808 ARCH_EXT_LIST_ARM="
1809     armv5te
1810     armv6
1811     armv6t2
1812     armv8
1813     neon
1814     vfp
1815     vfpv3
1816     setend
1817 "
1818
1819 ARCH_EXT_LIST_MIPS="
1820     mipsfpu
1821     mips32r2
1822     mips32r5
1823     mips64r2
1824     mips32r6
1825     mips64r6
1826     mipsdsp
1827     mipsdspr2
1828     msa
1829 "
1830
1831 ARCH_EXT_LIST_LOONGSON="
1832     loongson2
1833     loongson3
1834     mmi
1835 "
1836
1837 ARCH_EXT_LIST_X86_SIMD="
1838     aesni
1839     amd3dnow
1840     amd3dnowext
1841     avx
1842     avx2
1843     fma3
1844     fma4
1845     mmx
1846     mmxext
1847     sse
1848     sse2
1849     sse3
1850     sse4
1851     sse42
1852     ssse3
1853     xop
1854 "
1855
1856 ARCH_EXT_LIST_PPC="
1857     altivec
1858     dcbzl
1859     ldbrx
1860     power8
1861     ppc4xx
1862     vsx
1863 "
1864
1865 ARCH_EXT_LIST_X86="
1866     $ARCH_EXT_LIST_X86_SIMD
1867     cpunop
1868     i686
1869 "
1870
1871 ARCH_EXT_LIST="
1872     $ARCH_EXT_LIST_ARM
1873     $ARCH_EXT_LIST_PPC
1874     $ARCH_EXT_LIST_X86
1875     $ARCH_EXT_LIST_MIPS
1876     $ARCH_EXT_LIST_LOONGSON
1877 "
1878
1879 ARCH_FEATURES="
1880     aligned_stack
1881     fast_64bit
1882     fast_clz
1883     fast_cmov
1884     local_aligned
1885     simd_align_16
1886     simd_align_32
1887 "
1888
1889 BUILTIN_LIST="
1890     atomic_cas_ptr
1891     machine_rw_barrier
1892     MemoryBarrier
1893     mm_empty
1894     rdtsc
1895     sarestart
1896     sem_timedwait
1897     sync_val_compare_and_swap
1898 "
1899 HAVE_LIST_CMDLINE="
1900     inline_asm
1901     symver
1902     x86asm
1903 "
1904
1905 HAVE_LIST_PUB="
1906     bigendian
1907     fast_unaligned
1908 "
1909
1910 HEADERS_LIST="
1911     arpa_inet_h
1912     asm_types_h
1913     cdio_paranoia_h
1914     cdio_paranoia_paranoia_h
1915     cuda_h
1916     dispatch_dispatch_h
1917     dev_bktr_ioctl_bt848_h
1918     dev_bktr_ioctl_meteor_h
1919     dev_ic_bt8xx_h
1920     dev_video_bktr_ioctl_bt848_h
1921     dev_video_meteor_ioctl_meteor_h
1922     direct_h
1923     dirent_h
1924     dxgidebug_h
1925     dxva_h
1926     ES2_gl_h
1927     gsm_h
1928     io_h
1929     machine_ioctl_bt848_h
1930     machine_ioctl_meteor_h
1931     malloc_h
1932     opencv2_core_core_c_h
1933     OpenGL_gl3_h
1934     poll_h
1935     sys_param_h
1936     sys_resource_h
1937     sys_select_h
1938     sys_soundcard_h
1939     sys_time_h
1940     sys_un_h
1941     sys_videoio_h
1942     termios_h
1943     udplite_h
1944     unistd_h
1945     valgrind_valgrind_h
1946     windows_h
1947     winsock2_h
1948 "
1949
1950 INTRINSICS_LIST="
1951     intrinsics_neon
1952 "
1953
1954 COMPLEX_FUNCS="
1955     cabs
1956     cexp
1957 "
1958
1959 MATH_FUNCS="
1960     atanf
1961     atan2f
1962     cbrt
1963     cbrtf
1964     copysign
1965     cosf
1966     erf
1967     exp2
1968     exp2f
1969     expf
1970     hypot
1971     isfinite
1972     isinf
1973     isnan
1974     ldexpf
1975     llrint
1976     llrintf
1977     log2
1978     log2f
1979     log10f
1980     lrint
1981     lrintf
1982     powf
1983     rint
1984     round
1985     roundf
1986     sinf
1987     trunc
1988     truncf
1989 "
1990
1991 SYSTEM_FEATURES="
1992     atomics_native
1993     dos_paths
1994     libc_msvcrt
1995     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
1996     section_data_rel_ro
1997     threads
1998     uwp
1999     winrt
2000 "
2001
2002 SYSTEM_FUNCS="
2003     access
2004     aligned_malloc
2005     arc4random
2006     clock_gettime
2007     closesocket
2008     CommandLineToArgvW
2009     fcntl
2010     getaddrinfo
2011     gethrtime
2012     getopt
2013     GetProcessAffinityMask
2014     GetProcessMemoryInfo
2015     GetProcessTimes
2016     getrusage
2017     GetSystemTimeAsFileTime
2018     gettimeofday
2019     glob
2020     glXGetProcAddress
2021     gmtime_r
2022     inet_aton
2023     isatty
2024     kbhit
2025     localtime_r
2026     lstat
2027     lzo1x_999_compress
2028     mach_absolute_time
2029     MapViewOfFile
2030     memalign
2031     mkstemp
2032     mmap
2033     mprotect
2034     nanosleep
2035     PeekNamedPipe
2036     posix_memalign
2037     pthread_cancel
2038     sched_getaffinity
2039     SecItemImport
2040     SetConsoleTextAttribute
2041     SetConsoleCtrlHandler
2042     setmode
2043     setrlimit
2044     Sleep
2045     strerror_r
2046     sysconf
2047     sysctl
2048     usleep
2049     UTGetOSTypeFromString
2050     VirtualAlloc
2051     wglGetProcAddress
2052 "
2053
2054 SYSTEM_LIBRARIES="
2055     vaapi_drm
2056     vaapi_x11
2057     vdpau_x11
2058     wincrypt
2059 "
2060
2061 TOOLCHAIN_FEATURES="
2062     as_arch_directive
2063     as_fpu_directive
2064     as_func
2065     as_object_arch
2066     asm_mod_q
2067     blocks_extension
2068     ebp_available
2069     ebx_available
2070     gnu_as
2071     gnu_windres
2072     ibm_asm
2073     inline_asm_direct_symbol_refs
2074     inline_asm_labels
2075     inline_asm_nonlocal_labels
2076     pragma_deprecated
2077     rsync_contimeout
2078     symver_asm_label
2079     symver_gnu_asm
2080     vfp_args
2081     xform_asm
2082     xmm_clobbers
2083 "
2084
2085 TYPES_LIST="
2086     CONDITION_VARIABLE_Ptr
2087     kCMVideoCodecType_HEVC
2088     socklen_t
2089     struct_addrinfo
2090     struct_group_source_req
2091     struct_ip_mreq_source
2092     struct_ipv6_mreq
2093     struct_msghdr_msg_flags
2094     struct_pollfd
2095     struct_rusage_ru_maxrss
2096     struct_sctp_event_subscribe
2097     struct_sockaddr_in6
2098     struct_sockaddr_sa_len
2099     struct_sockaddr_storage
2100     struct_stat_st_mtim_tv_nsec
2101     struct_v4l2_frmivalenum_discrete
2102 "
2103
2104 HAVE_LIST="
2105     $ARCH_EXT_LIST
2106     $(add_suffix _external $ARCH_EXT_LIST)
2107     $(add_suffix _inline   $ARCH_EXT_LIST)
2108     $ARCH_FEATURES
2109     $ATOMICS_LIST
2110     $BUILTIN_LIST
2111     $COMPLEX_FUNCS
2112     $HAVE_LIST_CMDLINE
2113     $HAVE_LIST_PUB
2114     $HEADERS_LIST
2115     $INTRINSICS_LIST
2116     $MATH_FUNCS
2117     $SYSTEM_FEATURES
2118     $SYSTEM_FUNCS
2119     $SYSTEM_LIBRARIES
2120     $THREADS_LIST
2121     $TOOLCHAIN_FEATURES
2122     $TYPES_LIST
2123     makeinfo
2124     makeinfo_html
2125     opencl_d3d11
2126     opencl_drm_arm
2127     opencl_dxva2
2128     opencl_vaapi_beignet
2129     opencl_vaapi_intel_media
2130     perl
2131     pod2man
2132     texi2html
2133 "
2134
2135 # options emitted with CONFIG_ prefix but not available on the command line
2136 CONFIG_EXTRA="
2137     aandcttables
2138     ac3dsp
2139     adts_header
2140     audio_frame_queue
2141     audiodsp
2142     blockdsp
2143     bswapdsp
2144     cabac
2145     cbs
2146     cbs_h264
2147     cbs_h265
2148     cbs_mpeg2
2149     dirac_parse
2150     dvprofile
2151     exif
2152     faandct
2153     faanidct
2154     fdctdsp
2155     flacdsp
2156     fmtconvert
2157     frame_thread_encoder
2158     g722dsp
2159     golomb
2160     gplv3
2161     h263dsp
2162     h264chroma
2163     h264dsp
2164     h264parse
2165     h264pred
2166     h264qpel
2167     hevcparse
2168     hpeldsp
2169     huffman
2170     huffyuvdsp
2171     huffyuvencdsp
2172     idctdsp
2173     iirfilter
2174     mdct15
2175     intrax8
2176     iso_media
2177     ividsp
2178     jpegtables
2179     lgplv3
2180     libx262
2181     llauddsp
2182     llviddsp
2183     llvidencdsp
2184     lpc
2185     lzf
2186     me_cmp
2187     mpeg_er
2188     mpegaudio
2189     mpegaudiodsp
2190     mpegaudioheader
2191     mpegvideo
2192     mpegvideoenc
2193     mss34dsp
2194     pixblockdsp
2195     qpeldsp
2196     qsv
2197     qsvdec
2198     qsvenc
2199     qsvvpp
2200     rangecoder
2201     riffdec
2202     riffenc
2203     rtpdec
2204     rtpenc_chain
2205     rv34dsp
2206     sinewin
2207     snappy
2208     srtp
2209     startcode
2210     texturedsp
2211     texturedspenc
2212     tpeldsp
2213     vaapi_1
2214     vaapi_encode
2215     vc1dsp
2216     videodsp
2217     vp3dsp
2218     vp56dsp
2219     vp8dsp
2220     wma_freqs
2221     wmv2dsp
2222 "
2223
2224 CMDLINE_SELECT="
2225     $ARCH_EXT_LIST
2226     $CONFIG_LIST
2227     $HAVE_LIST_CMDLINE
2228     $THREADS_LIST
2229     asm
2230     cross_compile
2231     debug
2232     extra_warnings
2233     logging
2234     lto
2235     optimizations
2236     rpath
2237     stripping
2238 "
2239
2240 PATHS_LIST="
2241     bindir
2242     datadir
2243     docdir
2244     incdir
2245     libdir
2246     mandir
2247     pkgconfigdir
2248     prefix
2249     shlibdir
2250     install_name_dir
2251 "
2252
2253 CMDLINE_SET="
2254     $PATHS_LIST
2255     ar
2256     arch
2257     as
2258     assert_level
2259     build_suffix
2260     cc
2261     objcc
2262     cpu
2263     cross_prefix
2264     custom_allocator
2265     cxx
2266     dep_cc
2267     doxygen
2268     env
2269     extra_version
2270     gas
2271     host_cc
2272     host_cflags
2273     host_extralibs
2274     host_ld
2275     host_ldflags
2276     host_os
2277     ignore_tests
2278     install
2279     ld
2280     ln_s
2281     logfile
2282     malloc_prefix
2283     nm
2284     optflags
2285     nvccflags
2286     pkg_config
2287     pkg_config_flags
2288     progs_suffix
2289     random_seed
2290     ranlib
2291     samples
2292     strip
2293     sws_max_filter_size
2294     sysinclude
2295     sysroot
2296     target_exec
2297     target_os
2298     target_path
2299     target_samples
2300     tempprefix
2301     toolchain
2302     valgrind
2303     x86asmexe
2304 "
2305
2306 CMDLINE_APPEND="
2307     extra_cflags
2308     extra_cxxflags
2309     extra_objcflags
2310     host_cppflags
2311 "
2312
2313 # code dependency declarations
2314
2315 # architecture extensions
2316
2317 armv5te_deps="arm"
2318 armv6_deps="arm"
2319 armv6t2_deps="arm"
2320 armv8_deps="aarch64"
2321 neon_deps_any="aarch64 arm"
2322 intrinsics_neon_deps="neon"
2323 vfp_deps_any="aarch64 arm"
2324 vfpv3_deps="vfp"
2325 setend_deps="arm"
2326
2327 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2328
2329 altivec_deps="ppc"
2330 dcbzl_deps="ppc"
2331 ldbrx_deps="ppc"
2332 ppc4xx_deps="ppc"
2333 vsx_deps="altivec"
2334 power8_deps="vsx"
2335
2336 loongson2_deps="mips"
2337 loongson3_deps="mips"
2338 mips32r2_deps="mips"
2339 mips32r5_deps="mips"
2340 mips32r6_deps="mips"
2341 mips64r2_deps="mips"
2342 mips64r6_deps="mips"
2343 mipsfpu_deps="mips"
2344 mipsdsp_deps="mips"
2345 mipsdspr2_deps="mips"
2346 mmi_deps="mips"
2347 msa_deps="mipsfpu"
2348
2349 cpunop_deps="i686"
2350 x86_64_select="i686"
2351 x86_64_suggest="fast_cmov"
2352
2353 amd3dnow_deps="mmx"
2354 amd3dnowext_deps="amd3dnow"
2355 i686_deps="x86"
2356 mmx_deps="x86"
2357 mmxext_deps="mmx"
2358 sse_deps="mmxext"
2359 sse2_deps="sse"
2360 sse3_deps="sse2"
2361 ssse3_deps="sse3"
2362 sse4_deps="ssse3"
2363 sse42_deps="sse4"
2364 aesni_deps="sse42"
2365 avx_deps="sse42"
2366 xop_deps="avx"
2367 fma3_deps="avx"
2368 fma4_deps="avx"
2369 avx2_deps="avx"
2370
2371 mmx_external_deps="x86asm"
2372 mmx_inline_deps="inline_asm x86"
2373 mmx_suggest="mmx_external mmx_inline"
2374
2375 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2376     eval dep=\$${ext}_deps
2377     eval ${ext}_external_deps='"${dep}_external"'
2378     eval ${ext}_inline_deps='"${dep}_inline"'
2379     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2380 done
2381
2382 aligned_stack_if_any="aarch64 ppc x86"
2383 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2384 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2385 fast_unaligned_if_any="aarch64 ppc x86"
2386 simd_align_16_if_any="altivec neon sse"
2387 simd_align_32_if_any="avx"
2388
2389 # system capabilities
2390 symver_if_any="symver_asm_label symver_gnu_asm"
2391 valgrind_backtrace_conflict="optimizations"
2392 valgrind_backtrace_deps="valgrind_valgrind_h"
2393
2394 # threading support
2395 atomics_gcc_if="sync_val_compare_and_swap"
2396 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2397 atomics_win32_if="MemoryBarrier"
2398 atomics_native_if_any="$ATOMICS_LIST"
2399 w32threads_deps="atomics_native"
2400 threads_if_any="$THREADS_LIST"
2401
2402 # subsystems
2403 cbs_h264_select="cbs golomb"
2404 cbs_h265_select="cbs golomb"
2405 cbs_mpeg2_select="cbs"
2406 dct_select="rdft"
2407 dirac_parse_select="golomb"
2408 error_resilience_select="me_cmp"
2409 faandct_deps="faan"
2410 faandct_select="fdctdsp"
2411 faanidct_deps="faan"
2412 faanidct_select="idctdsp"
2413 h264dsp_select="startcode"
2414 hevcparse_select="golomb"
2415 frame_thread_encoder_deps="encoders threads"
2416 intrax8_select="blockdsp idctdsp"
2417 mdct_select="fft"
2418 mdct15_select="fft"
2419 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2420 mpeg_er_select="error_resilience"
2421 mpegaudio_select="mpegaudiodsp mpegaudioheader"
2422 mpegaudiodsp_select="dct"
2423 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2424 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
2425 vc1dsp_select="h264chroma qpeldsp startcode"
2426 rdft_select="fft"
2427
2428 # decoders / encoders
2429 aac_decoder_select="adts_header mdct15 mdct sinewin"
2430 aac_fixed_decoder_select="mdct sinewin"
2431 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2432 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2433 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2434 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2435 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2436 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2437 adpcm_g722_decoder_select="g722dsp"
2438 adpcm_g722_encoder_select="g722dsp"
2439 aic_decoder_select="golomb idctdsp"
2440 alac_encoder_select="lpc"
2441 als_decoder_select="bswapdsp"
2442 amrnb_decoder_select="lsp"
2443 amrwb_decoder_select="lsp"
2444 amv_decoder_select="sp5x_decoder exif"
2445 amv_encoder_select="aandcttables jpegtables mpegvideoenc"
2446 ape_decoder_select="bswapdsp llauddsp"
2447 apng_decoder_deps="zlib"
2448 apng_encoder_deps="zlib"
2449 apng_encoder_select="llvidencdsp"
2450 aptx_decoder_select="audio_frame_queue"
2451 aptx_encoder_select="audio_frame_queue"
2452 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2453 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2454 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2455 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2456 atrac1_decoder_select="mdct sinewin"
2457 atrac3_decoder_select="mdct"
2458 atrac3p_decoder_select="mdct sinewin"
2459 avrn_decoder_select="exif jpegtables"
2460 bink_decoder_select="blockdsp hpeldsp"
2461 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2462 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2463 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2464 clearvideo_decoder_select="idctdsp"
2465 cllc_decoder_select="bswapdsp"
2466 comfortnoise_encoder_select="lpc"
2467 cook_decoder_select="audiodsp mdct sinewin"
2468 cscd_decoder_select="lzo"
2469 cscd_decoder_suggest="zlib"
2470 dca_decoder_select="mdct"
2471 dds_decoder_select="texturedsp"
2472 dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
2473 dnxhd_decoder_select="blockdsp idctdsp"
2474 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2475 dolby_e_decoder_select="mdct"
2476 dvvideo_decoder_select="dvprofile idctdsp"
2477 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2478 dxa_decoder_deps="zlib"
2479 dxv_decoder_select="lzf texturedsp"
2480 eac3_decoder_select="ac3_decoder"
2481 eac3_encoder_select="ac3_encoder"
2482 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2483 eatgq_decoder_select="aandcttables"
2484 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2485 exr_decoder_deps="zlib"
2486 ffv1_decoder_select="rangecoder"
2487 ffv1_encoder_select="rangecoder"
2488 ffvhuff_decoder_select="huffyuv_decoder"
2489 ffvhuff_encoder_select="huffyuv_encoder"
2490 fic_decoder_select="golomb"
2491 flac_decoder_select="flacdsp"
2492 flac_encoder_select="bswapdsp flacdsp lpc"
2493 flashsv2_decoder_deps="zlib"
2494 flashsv2_encoder_deps="zlib"
2495 flashsv_decoder_deps="zlib"
2496 flashsv_encoder_deps="zlib"
2497 flv_decoder_select="h263_decoder"
2498 flv_encoder_select="h263_encoder"
2499 fourxm_decoder_select="blockdsp bswapdsp"
2500 fraps_decoder_select="bswapdsp huffman"
2501 g2m_decoder_deps="zlib"
2502 g2m_decoder_select="blockdsp idctdsp jpegtables"
2503 g729_decoder_select="audiodsp"
2504 h261_decoder_select="mpegvideo"
2505 h261_encoder_select="aandcttables mpegvideoenc"
2506 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2507 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2508 h263i_decoder_select="h263_decoder"
2509 h263p_decoder_select="h263_decoder"
2510 h263p_encoder_select="h263_encoder"
2511 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
2512 h264_decoder_suggest="error_resilience"
2513 hap_decoder_select="snappy texturedsp"
2514 hap_encoder_deps="libsnappy"
2515 hap_encoder_select="texturedspenc"
2516 hevc_decoder_select="bswapdsp cabac golomb hevcparse videodsp"
2517 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2518 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llvidencdsp"
2519 iac_decoder_select="imc_decoder"
2520 imc_decoder_select="bswapdsp fft mdct sinewin"
2521 indeo3_decoder_select="hpeldsp"
2522 indeo4_decoder_select="ividsp"
2523 indeo5_decoder_select="ividsp"
2524 interplay_video_decoder_select="hpeldsp"
2525 jpegls_decoder_select="mjpeg_decoder"
2526 jv_decoder_select="blockdsp"
2527 lagarith_decoder_select="llviddsp"
2528 ljpeg_encoder_select="aandcttables idctdsp jpegtables mpegvideoenc"
2529 magicyuv_decoder_select="llviddsp"
2530 magicyuv_encoder_select="llvidencdsp"
2531 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2532 metasound_decoder_select="lsp mdct sinewin"
2533 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2534 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2535 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2536 mjpegb_decoder_select="mjpeg_decoder"
2537 mlp_decoder_select="mlp_parser"
2538 mlp_encoder_select="lpc"
2539 motionpixels_decoder_select="bswapdsp"
2540 mp1_decoder_select="mpegaudio"
2541 mp1float_decoder_select="mpegaudio"
2542 mp2_decoder_select="mpegaudio"
2543 mp2float_decoder_select="mpegaudio"
2544 mp3_decoder_select="mpegaudio"
2545 mp3adu_decoder_select="mpegaudio"
2546 mp3adufloat_decoder_select="mpegaudio"
2547 mp3float_decoder_select="mpegaudio"
2548 mp3on4_decoder_select="mpegaudio"
2549 mp3on4float_decoder_select="mpegaudio"
2550 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2551 mpc8_decoder_select="mpegaudiodsp"
2552 mpegvideo_decoder_select="mpegvideo"
2553 mpeg1video_decoder_select="mpegvideo"
2554 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2555 mpeg2video_decoder_select="mpegvideo"
2556 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2557 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2558 mpeg4_encoder_select="h263_encoder"
2559 msa1_decoder_select="mss34dsp"
2560 mscc_decoder_deps="zlib"
2561 msmpeg4v1_decoder_select="h263_decoder"
2562 msmpeg4v2_decoder_select="h263_decoder"
2563 msmpeg4v2_encoder_select="h263_encoder"
2564 msmpeg4v3_decoder_select="h263_decoder"
2565 msmpeg4v3_encoder_select="h263_encoder"
2566 mss2_decoder_select="mpegvideo qpeldsp vc1_decoder"
2567 mts2_decoder_select="mss34dsp"
2568 mxpeg_decoder_select="mjpeg_decoder"
2569 nellymoser_decoder_select="mdct sinewin"
2570 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2571 nuv_decoder_select="idctdsp lzo"
2572 on2avc_decoder_select="mdct"
2573 opus_decoder_deps="swresample"
2574 opus_decoder_select="mdct15"
2575 opus_encoder_select="audio_frame_queue mdct15"
2576 png_decoder_deps="zlib"
2577 png_encoder_deps="zlib"
2578 png_encoder_select="llvidencdsp"
2579 prores_decoder_select="blockdsp idctdsp"
2580 prores_encoder_select="fdctdsp"
2581 qcelp_decoder_select="lsp"
2582 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2583 ra_144_decoder_select="audiodsp"
2584 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2585 ralf_decoder_select="golomb"
2586 rawvideo_decoder_select="bswapdsp"
2587 rscc_decoder_deps="zlib"
2588 rtjpeg_decoder_select="me_cmp"
2589 rv10_decoder_select="h263_decoder"
2590 rv10_encoder_select="h263_encoder"
2591 rv20_decoder_select="h263_decoder"
2592 rv20_encoder_select="h263_encoder"
2593 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2594 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2595 screenpresso_decoder_deps="zlib"
2596 shorten_decoder_select="bswapdsp"
2597 sipr_decoder_select="lsp"
2598 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2599 snow_encoder_select="aandcttables dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2600 sonic_decoder_select="golomb rangecoder"
2601 sonic_encoder_select="golomb rangecoder"
2602 sonic_ls_encoder_select="golomb rangecoder"
2603 sp5x_decoder_select="mjpeg_decoder"
2604 srgc_decoder_deps="zlib"
2605 svq1_decoder_select="hpeldsp"
2606 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2607 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2608 svq3_decoder_suggest="zlib"
2609 tak_decoder_select="audiodsp"
2610 tdsc_decoder_deps="zlib"
2611 tdsc_decoder_select="mjpeg_decoder"
2612 theora_decoder_select="vp3_decoder"
2613 thp_decoder_select="mjpeg_decoder"
2614 tiff_decoder_suggest="zlib lzma"
2615 tiff_encoder_suggest="zlib"
2616 truehd_decoder_select="mlp_parser"
2617 truehd_encoder_select="lpc"
2618 truemotion2_decoder_select="bswapdsp"
2619 truespeech_decoder_select="bswapdsp"
2620 tscc_decoder_deps="zlib"
2621 twinvq_decoder_select="mdct lsp sinewin"
2622 txd_decoder_select="texturedsp"
2623 utvideo_decoder_select="bswapdsp llviddsp"
2624 utvideo_encoder_select="bswapdsp huffman llvidencdsp"
2625 vble_decoder_select="llviddsp"
2626 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 mpegvideo vc1dsp"
2627 vc1image_decoder_select="vc1_decoder"
2628 vorbis_decoder_select="mdct"
2629 vorbis_encoder_select="mdct"
2630 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2631 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2632 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2633 vp6a_decoder_select="vp6_decoder"
2634 vp6f_decoder_select="vp6_decoder"
2635 vp7_decoder_select="h264pred videodsp vp8dsp"
2636 vp8_decoder_select="h264pred videodsp vp8dsp"
2637 vp9_decoder_select="videodsp vp9_parser"
2638 webp_decoder_select="vp8_decoder exif"
2639 wmalossless_decoder_select="llauddsp"
2640 wmapro_decoder_select="mdct sinewin wma_freqs"
2641 wmav1_decoder_select="mdct sinewin wma_freqs"
2642 wmav1_encoder_select="mdct sinewin wma_freqs"
2643 wmav2_decoder_select="mdct sinewin wma_freqs"
2644 wmav2_encoder_select="mdct sinewin wma_freqs"
2645 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2646 wmv1_decoder_select="h263_decoder"
2647 wmv1_encoder_select="h263_encoder"
2648 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2649 wmv2_encoder_select="h263_encoder wmv2dsp"
2650 wmv3_decoder_select="vc1_decoder"
2651 wmv3image_decoder_select="wmv3_decoder"
2652 xma1_decoder_select="wmapro_decoder"
2653 xma2_decoder_select="wmapro_decoder"
2654 zerocodec_decoder_deps="zlib"
2655 zlib_decoder_deps="zlib"
2656 zlib_encoder_deps="zlib"
2657 zmbv_decoder_deps="zlib"
2658 zmbv_encoder_deps="zlib"
2659
2660 # hardware accelerators
2661 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2662 cuda_deps_any="libdl LoadLibrary"
2663 cuvid_deps="cuda"
2664 d3d11va_deps="dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2665 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode ole32 user32"
2666 nvdec_deps="cuda"
2667 videotoolbox_hwaccel_deps="videotoolbox pthreads"
2668 videotoolbox_hwaccel_extralibs="-framework QuartzCore"
2669 xvmc_deps="X11_extensions_XvMClib_h"
2670
2671 h263_vaapi_hwaccel_deps="vaapi"
2672 h263_vaapi_hwaccel_select="h263_decoder"
2673 h263_videotoolbox_hwaccel_deps="videotoolbox"
2674 h263_videotoolbox_hwaccel_select="h263_decoder"
2675 h264_d3d11va_hwaccel_deps="d3d11va"
2676 h264_d3d11va_hwaccel_select="h264_decoder"
2677 h264_d3d11va2_hwaccel_deps="d3d11va"
2678 h264_d3d11va2_hwaccel_select="h264_decoder"
2679 h264_dxva2_hwaccel_deps="dxva2"
2680 h264_dxva2_hwaccel_select="h264_decoder"
2681 h264_nvdec_hwaccel_deps="nvdec"
2682 h264_nvdec_hwaccel_select="h264_decoder"
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_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2690 hevc_d3d11va_hwaccel_select="hevc_decoder"
2691 hevc_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2692 hevc_d3d11va2_hwaccel_select="hevc_decoder"
2693 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2694 hevc_dxva2_hwaccel_select="hevc_decoder"
2695 hevc_nvdec_hwaccel_deps="nvdec"
2696 hevc_nvdec_hwaccel_select="hevc_decoder"
2697 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2698 hevc_vaapi_hwaccel_select="hevc_decoder"
2699 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2700 hevc_vdpau_hwaccel_select="hevc_decoder"
2701 hevc_videotoolbox_hwaccel_deps="videotoolbox"
2702 hevc_videotoolbox_hwaccel_select="hevc_decoder"
2703 mpeg_xvmc_hwaccel_deps="xvmc"
2704 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2705 mpeg1_nvdec_hwaccel_deps="nvdec"
2706 mpeg1_nvdec_hwaccel_select="mpeg1video_decoder"
2707 mpeg1_vdpau_hwaccel_deps="vdpau"
2708 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2709 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2710 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2711 mpeg1_xvmc_hwaccel_deps="xvmc"
2712 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2713 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2714 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2715 mpeg2_d3d11va2_hwaccel_deps="d3d11va"
2716 mpeg2_d3d11va2_hwaccel_select="mpeg2video_decoder"
2717 mpeg2_dxva2_hwaccel_deps="dxva2"
2718 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2719 mpeg2_nvdec_hwaccel_deps="nvdec"
2720 mpeg2_nvdec_hwaccel_select="mpeg2video_decoder"
2721 mpeg2_vaapi_hwaccel_deps="vaapi"
2722 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2723 mpeg2_vdpau_hwaccel_deps="vdpau"
2724 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2725 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2726 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2727 mpeg2_xvmc_hwaccel_deps="xvmc"
2728 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2729 mpeg4_nvdec_hwaccel_deps="nvdec"
2730 mpeg4_nvdec_hwaccel_select="mpeg4_decoder"
2731 mpeg4_vaapi_hwaccel_deps="vaapi"
2732 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2733 mpeg4_vdpau_hwaccel_deps="vdpau"
2734 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2735 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2736 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2737 vc1_d3d11va_hwaccel_deps="d3d11va"
2738 vc1_d3d11va_hwaccel_select="vc1_decoder"
2739 vc1_d3d11va2_hwaccel_deps="d3d11va"
2740 vc1_d3d11va2_hwaccel_select="vc1_decoder"
2741 vc1_dxva2_hwaccel_deps="dxva2"
2742 vc1_dxva2_hwaccel_select="vc1_decoder"
2743 vc1_nvdec_hwaccel_deps="nvdec"
2744 vc1_nvdec_hwaccel_select="vc1_decoder"
2745 vc1_vaapi_hwaccel_deps="vaapi"
2746 vc1_vaapi_hwaccel_select="vc1_decoder"
2747 vc1_vdpau_hwaccel_deps="vdpau"
2748 vc1_vdpau_hwaccel_select="vc1_decoder"
2749 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2750 vp9_d3d11va_hwaccel_select="vp9_decoder"
2751 vp9_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2752 vp9_d3d11va2_hwaccel_select="vp9_decoder"
2753 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
2754 vp9_dxva2_hwaccel_select="vp9_decoder"
2755 vp9_nvdec_hwaccel_deps="nvdec"
2756 vp9_nvdec_hwaccel_select="vp9_decoder"
2757 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9_bit_depth"
2758 vp9_vaapi_hwaccel_select="vp9_decoder"
2759 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2760 wmv3_d3d11va2_hwaccel_select="vc1_d3d11va2_hwaccel"
2761 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2762 wmv3_nvdec_hwaccel_select="vc1_nvdec_hwaccel"
2763 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2764 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2765
2766 # hardware-accelerated codecs
2767 omx_deps="libdl pthreads"
2768 omx_rpi_select="omx"
2769 qsv_deps="libmfx"
2770 qsvdec_select="qsv"
2771 qsvenc_select="qsv"
2772 qsvvpp_select="qsv"
2773 vaapi_encode_deps="vaapi"
2774 v4l2_m2m_deps_any="linux_videodev2_h"
2775
2776 hwupload_cuda_filter_deps="cuda"
2777 scale_npp_filter_deps="cuda libnpp"
2778 scale_cuda_filter_deps="cuda_sdk"
2779 thumbnail_cuda_filter_deps="cuda_sdk"
2780
2781 nvenc_deps="cuda"
2782 nvenc_deps_any="libdl LoadLibrary"
2783 nvenc_encoder_deps="nvenc"
2784
2785 h263_v4l2m2m_decoder_deps="v4l2_m2m h263_v4l2_m2m"
2786 h263_v4l2m2m_encoder_deps="v4l2_m2m h263_v4l2_m2m"
2787 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2788 h264_cuvid_decoder_deps="cuvid"
2789 h264_cuvid_decoder_select="h264_mp4toannexb_bsf"
2790 h264_mediacodec_decoder_deps="mediacodec"
2791 h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
2792 h264_mmal_decoder_deps="mmal"
2793 h264_nvenc_encoder_deps="nvenc"
2794 h264_omx_encoder_deps="omx"
2795 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec"
2796 h264_qsv_encoder_select="qsvenc"
2797 h264_rkmpp_decoder_deps="rkmpp"
2798 h264_rkmpp_decoder_select="h264_mp4toannexb_bsf"
2799 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2800 h264_vaapi_encoder_select="cbs_h264 vaapi_encode"
2801 h264_v4l2m2m_decoder_deps="v4l2_m2m h264_v4l2_m2m"
2802 h264_v4l2m2m_encoder_deps="v4l2_m2m h264_v4l2_m2m"
2803 hevc_cuvid_decoder_deps="cuvid"
2804 hevc_cuvid_decoder_select="hevc_mp4toannexb_bsf"
2805 hevc_mediacodec_decoder_deps="mediacodec"
2806 hevc_mediacodec_decoder_select="hevc_mp4toannexb_bsf hevc_parser"
2807 hevc_nvenc_encoder_deps="nvenc"
2808 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec"
2809 hevc_qsv_encoder_select="hevcparse qsvenc"
2810 hevc_rkmpp_decoder_deps="rkmpp"
2811 hevc_rkmpp_decoder_select="hevc_mp4toannexb_bsf"
2812 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2813 hevc_vaapi_encoder_select="cbs_h265 vaapi_encode"
2814 hevc_v4l2m2m_decoder_deps="v4l2_m2m hevc_v4l2_m2m"
2815 hevc_v4l2m2m_encoder_deps="v4l2_m2m hevc_v4l2_m2m"
2816 mjpeg_cuvid_decoder_deps="cuvid"
2817 mjpeg_qsv_encoder_deps="libmfx"
2818 mjpeg_qsv_encoder_select="qsvenc"
2819 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2820 mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
2821 mpeg1_cuvid_decoder_deps="cuvid"
2822 mpeg1_v4l2m2m_decoder_deps="v4l2_m2m mpeg1_v4l2_m2m"
2823 mpeg2_crystalhd_decoder_select="crystalhd"
2824 mpeg2_cuvid_decoder_deps="cuvid"
2825 mpeg2_mmal_decoder_deps="mmal"
2826 mpeg2_mediacodec_decoder_deps="mediacodec"
2827 mpeg2_qsv_decoder_select="qsvdec mpegvideo_parser"
2828 mpeg2_qsv_encoder_select="qsvenc"
2829 mpeg2_vaapi_encoder_deps="VAEncPictureParameterBufferMPEG2"
2830 mpeg2_vaapi_encoder_select="cbs_mpeg2 vaapi_encode"
2831 mpeg2_v4l2m2m_decoder_deps="v4l2_m2m mpeg2_v4l2_m2m"
2832 mpeg4_crystalhd_decoder_select="crystalhd"
2833 mpeg4_cuvid_decoder_deps="cuvid"
2834 mpeg4_mediacodec_decoder_deps="mediacodec"
2835 mpeg4_mmal_decoder_deps="mmal"
2836 mpeg4_omx_encoder_deps="omx"
2837 mpeg4_v4l2m2m_decoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
2838 mpeg4_v4l2m2m_encoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
2839 msmpeg4_crystalhd_decoder_select="crystalhd"
2840 nvenc_h264_encoder_select="h264_nvenc_encoder"
2841 nvenc_hevc_encoder_select="hevc_nvenc_encoder"
2842 vc1_crystalhd_decoder_select="crystalhd"
2843 vc1_cuvid_decoder_deps="cuvid"
2844 vc1_mmal_decoder_deps="mmal"
2845 vc1_qsv_decoder_select="qsvdec vc1_parser"
2846 vc1_v4l2m2m_decoder_deps="v4l2_m2m vc1_v4l2_m2m"
2847 vp8_cuvid_decoder_deps="cuvid"
2848 vp8_mediacodec_decoder_deps="mediacodec"
2849 vp8_qsv_decoder_select="qsvdec vp8_parser"
2850 vp8_rkmpp_decoder_deps="rkmpp"
2851 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
2852 vp8_vaapi_encoder_select="vaapi_encode"
2853 vp8_v4l2m2m_decoder_deps="v4l2_m2m vp8_v4l2_m2m"
2854 vp8_v4l2m2m_encoder_deps="v4l2_m2m vp8_v4l2_m2m"
2855 vp9_cuvid_decoder_deps="cuvid"
2856 vp9_mediacodec_decoder_deps="mediacodec"
2857 vp9_rkmpp_decoder_deps="rkmpp"
2858 vp9_vaapi_encoder_deps="VAEncPictureParameterBufferVP9"
2859 vp9_vaapi_encoder_select="vaapi_encode"
2860 vp9_v4l2m2m_decoder_deps="v4l2_m2m vp9_v4l2_m2m"
2861 wmv3_crystalhd_decoder_select="crystalhd"
2862
2863 # parsers
2864 aac_parser_select="adts_header"
2865 h264_parser_select="golomb h264dsp h264parse"
2866 hevc_parser_select="hevcparse"
2867 mpegaudio_parser_select="mpegaudioheader"
2868 mpegvideo_parser_select="mpegvideo"
2869 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
2870 vc1_parser_select="vc1dsp"
2871
2872 # bitstream_filters
2873 aac_adtstoasc_bsf_select="adts_header"
2874 h264_metadata_bsf_select="cbs_h264"
2875 h264_redundant_pps_bsf_select="cbs_h264"
2876 hevc_metadata_bsf_select="cbs_h265"
2877 mjpeg2jpeg_bsf_select="jpegtables"
2878 mpeg2_metadata_bsf_select="cbs_mpeg2"
2879 trace_headers_bsf_select="cbs_h264 cbs_h265 cbs_mpeg2"
2880
2881 # external libraries
2882 aac_at_decoder_deps="audiotoolbox"
2883 ac3_at_decoder_deps="audiotoolbox"
2884 ac3_at_decoder_select="ac3_parser"
2885 adpcm_ima_qt_at_decoder_deps="audiotoolbox"
2886 alac_at_decoder_deps="audiotoolbox"
2887 amr_nb_at_decoder_deps="audiotoolbox"
2888 avisynth_deps_any="libdl LoadLibrary"
2889 avisynth_demuxer_deps="avisynth"
2890 avisynth_demuxer_select="riffdec"
2891 eac3_at_decoder_deps="audiotoolbox"
2892 eac3_at_decoder_select="ac3_parser"
2893 gsm_ms_at_decoder_deps="audiotoolbox"
2894 ilbc_at_decoder_deps="audiotoolbox"
2895 mp1_at_decoder_deps="audiotoolbox"
2896 mp2_at_decoder_deps="audiotoolbox"
2897 mp3_at_decoder_deps="audiotoolbox"
2898 mp1_at_decoder_select="mpegaudioheader"
2899 mp2_at_decoder_select="mpegaudioheader"
2900 mp3_at_decoder_select="mpegaudioheader"
2901 pcm_alaw_at_decoder_deps="audiotoolbox"
2902 pcm_mulaw_at_decoder_deps="audiotoolbox"
2903 qdmc_at_decoder_deps="audiotoolbox"
2904 qdm2_at_decoder_deps="audiotoolbox"
2905 aac_at_encoder_deps="audiotoolbox"
2906 aac_at_encoder_select="audio_frame_queue"
2907 alac_at_encoder_deps="audiotoolbox"
2908 alac_at_encoder_select="audio_frame_queue"
2909 ilbc_at_encoder_deps="audiotoolbox"
2910 ilbc_at_encoder_select="audio_frame_queue"
2911 pcm_alaw_at_encoder_deps="audiotoolbox"
2912 pcm_alaw_at_encoder_select="audio_frame_queue"
2913 pcm_mulaw_at_encoder_deps="audiotoolbox"
2914 pcm_mulaw_at_encoder_select="audio_frame_queue"
2915 chromaprint_muxer_deps="chromaprint"
2916 h264_videotoolbox_encoder_deps="pthreads"
2917 h264_videotoolbox_encoder_select="videotoolbox_encoder"
2918 hevc_videotoolbox_encoder_deps="pthreads"
2919 hevc_videotoolbox_encoder_select="videotoolbox_encoder"
2920 libcelt_decoder_deps="libcelt"
2921 libfdk_aac_decoder_deps="libfdk_aac"
2922 libfdk_aac_encoder_deps="libfdk_aac"
2923 libfdk_aac_encoder_select="audio_frame_queue"
2924 libgme_demuxer_deps="libgme"
2925 libgsm_decoder_deps="libgsm"
2926 libgsm_encoder_deps="libgsm"
2927 libgsm_ms_decoder_deps="libgsm"
2928 libgsm_ms_encoder_deps="libgsm"
2929 libilbc_decoder_deps="libilbc"
2930 libilbc_encoder_deps="libilbc"
2931 libkvazaar_encoder_deps="libkvazaar"
2932 libmodplug_demuxer_deps="libmodplug"
2933 libmp3lame_encoder_deps="libmp3lame"
2934 libmp3lame_encoder_select="audio_frame_queue mpegaudioheader"
2935 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2936 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2937 libopencore_amrnb_encoder_select="audio_frame_queue"
2938 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2939 libopenh264_decoder_deps="libopenh264"
2940 libopenh264_decoder_select="h264_mp4toannexb_bsf"
2941 libopenh264_encoder_deps="libopenh264"
2942 libopenjpeg_decoder_deps="libopenjpeg"
2943 libopenjpeg_encoder_deps="libopenjpeg"
2944 libopenmpt_demuxer_deps="libopenmpt"
2945 libopus_decoder_deps="libopus"
2946 libopus_encoder_deps="libopus"
2947 libopus_encoder_select="audio_frame_queue"
2948 librsvg_decoder_deps="librsvg"
2949 libshine_encoder_deps="libshine"
2950 libshine_encoder_select="audio_frame_queue"
2951 libspeex_decoder_deps="libspeex"
2952 libspeex_encoder_deps="libspeex"
2953 libspeex_encoder_select="audio_frame_queue"
2954 libtheora_encoder_deps="libtheora"
2955 libtwolame_encoder_deps="libtwolame"
2956 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2957 libvorbis_decoder_deps="libvorbis"
2958 libvorbis_encoder_deps="libvorbis libvorbisenc"
2959 libvorbis_encoder_select="audio_frame_queue"
2960 libvpx_vp8_decoder_deps="libvpx"
2961 libvpx_vp8_encoder_deps="libvpx"
2962 libvpx_vp9_decoder_deps="libvpx"
2963 libvpx_vp9_encoder_deps="libvpx"
2964 libwavpack_encoder_deps="libwavpack"
2965 libwavpack_encoder_select="audio_frame_queue"
2966 libwebp_encoder_deps="libwebp"
2967 libwebp_anim_encoder_deps="libwebp"
2968 libx262_encoder_deps="libx262"
2969 libx264_encoder_deps="libx264"
2970 libx264rgb_encoder_deps="libx264 x264_csp_bgr"
2971 libx264rgb_encoder_select="libx264_encoder"
2972 libx265_encoder_deps="libx265"
2973 libxavs_encoder_deps="libxavs"
2974 libxvid_encoder_deps="libxvid"
2975 libzvbi_teletext_decoder_deps="libzvbi"
2976 videotoolbox_suggest="coreservices"
2977 videotoolbox_deps="corefoundation coremedia corevideo"
2978 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
2979
2980 # demuxers / muxers
2981 ac3_demuxer_select="ac3_parser"
2982 aiff_muxer_select="iso_media"
2983 asf_demuxer_select="riffdec"
2984 asf_o_demuxer_select="riffdec"
2985 asf_muxer_select="riffenc"
2986 asf_stream_muxer_select="asf_muxer"
2987 avi_demuxer_select="iso_media riffdec exif"
2988 avi_muxer_select="riffenc"
2989 caf_demuxer_select="iso_media riffdec"
2990 caf_muxer_select="iso_media"
2991 dash_muxer_select="mp4_muxer"
2992 dash_demuxer_deps="libxml2"
2993 dirac_demuxer_select="dirac_parser"
2994 dts_demuxer_select="dca_parser"
2995 dtshd_demuxer_select="dca_parser"
2996 dv_demuxer_select="dvprofile"
2997 dv_muxer_select="dvprofile"
2998 dxa_demuxer_select="riffdec"
2999 eac3_demuxer_select="ac3_parser"
3000 f4v_muxer_select="mov_muxer"
3001 fifo_muxer_deps="threads"
3002 flac_demuxer_select="flac_parser"
3003 hds_muxer_select="flv_muxer"
3004 hls_muxer_select="mpegts_muxer"
3005 hls_muxer_suggest="gcrypt openssl"
3006 image2_alias_pix_demuxer_select="image2_demuxer"
3007 image2_brender_pix_demuxer_select="image2_demuxer"
3008 ipod_muxer_select="mov_muxer"
3009 ismv_muxer_select="mov_muxer"
3010 matroska_audio_muxer_select="matroska_muxer"
3011 matroska_demuxer_select="iso_media riffdec"
3012 matroska_demuxer_suggest="bzlib lzo zlib"
3013 matroska_muxer_select="iso_media riffenc"
3014 mmf_muxer_select="riffenc"
3015 mov_demuxer_select="iso_media riffdec"
3016 mov_demuxer_suggest="zlib"
3017 mov_muxer_select="iso_media riffenc rtpenc_chain"
3018 mp3_demuxer_select="mpegaudio_parser"
3019 mp3_muxer_select="mpegaudioheader"
3020 mp4_muxer_select="mov_muxer"
3021 mpegts_demuxer_select="iso_media"
3022 mpegts_muxer_select="adts_muxer latm_muxer"
3023 mpegtsraw_demuxer_select="mpegts_demuxer"
3024 mxf_d10_muxer_select="mxf_muxer"
3025 mxf_opatom_muxer_select="mxf_muxer"
3026 nut_muxer_select="riffenc"
3027 nuv_demuxer_select="riffdec"
3028 oga_muxer_select="ogg_muxer"
3029 ogg_demuxer_select="dirac_parse"
3030 ogv_muxer_select="ogg_muxer"
3031 opus_muxer_select="ogg_muxer"
3032 psp_muxer_select="mov_muxer"
3033 rtp_demuxer_select="sdp_demuxer"
3034 rtp_muxer_select="golomb"
3035 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
3036 rtsp_demuxer_select="http_protocol rtpdec"
3037 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
3038 sap_demuxer_select="sdp_demuxer"
3039 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
3040 sdp_demuxer_select="rtpdec"
3041 smoothstreaming_muxer_select="ismv_muxer"
3042 spdif_demuxer_select="adts_header"
3043 spdif_muxer_select="adts_header"
3044 spx_muxer_select="ogg_muxer"
3045 swf_demuxer_suggest="zlib"
3046 tak_demuxer_select="tak_parser"
3047 tg2_muxer_select="mov_muxer"
3048 tgp_muxer_select="mov_muxer"
3049 vobsub_demuxer_select="mpegps_demuxer"
3050 w64_demuxer_select="wav_demuxer"
3051 w64_muxer_select="wav_muxer"
3052 wav_demuxer_select="riffdec"
3053 wav_muxer_select="riffenc"
3054 webm_muxer_select="iso_media riffenc"
3055 webm_dash_manifest_demuxer_select="matroska_demuxer"
3056 wtv_demuxer_select="mpegts_demuxer riffdec"
3057 wtv_muxer_select="mpegts_muxer riffenc"
3058 xmv_demuxer_select="riffdec"
3059 xwma_demuxer_select="riffdec"
3060
3061 # indevs / outdevs
3062 alsa_indev_deps="alsa"
3063 alsa_outdev_deps="alsa"
3064 avfoundation_indev_deps="avfoundation corevideo coremedia pthreads"
3065 avfoundation_indev_suggest="coregraphics applicationservices"
3066 avfoundation_indev_extralibs="-framework Foundation"
3067 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
3068 caca_outdev_deps="libcaca"
3069 decklink_deps_any="libdl LoadLibrary"
3070 decklink_indev_deps="decklink threads"
3071 decklink_indev_extralibs="-lstdc++"
3072 decklink_outdev_deps="decklink threads"
3073 decklink_outdev_extralibs="-lstdc++"
3074 libndi_newtek_indev_deps="libndi_newtek"
3075 libndi_newtek_indev_extralibs="-lndi"
3076 libndi_newtek_outdev_deps="libndi_newtek"
3077 libndi_newtek_outdev_extralibs="-lndi"
3078 dshow_indev_deps="IBaseFilter"
3079 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
3080 fbdev_indev_deps="linux_fb_h"
3081 fbdev_outdev_deps="linux_fb_h"
3082 gdigrab_indev_deps="CreateDIBSection"
3083 gdigrab_indev_extralibs="-lgdi32"
3084 gdigrab_indev_select="bmp_decoder"
3085 iec61883_indev_deps="libiec61883"
3086 jack_indev_deps="libjack"
3087 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
3088 kmsgrab_indev_deps="libdrm"
3089 lavfi_indev_deps="avfilter"
3090 libcdio_indev_deps="libcdio"
3091 libdc1394_indev_deps="libdc1394"
3092 openal_indev_deps="openal"
3093 opengl_outdev_deps="opengl"
3094 oss_indev_deps_any="sys_soundcard_h"
3095 oss_outdev_deps_any="sys_soundcard_h"
3096 pulse_indev_deps="libpulse"
3097 pulse_outdev_deps="libpulse"
3098 sdl2_outdev_deps="sdl2"
3099 sndio_indev_deps="sndio"
3100 sndio_outdev_deps="sndio"
3101 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
3102 v4l2_indev_suggest="libv4l2"
3103 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
3104 v4l2_outdev_suggest="libv4l2"
3105 vfwcap_indev_deps="vfw32 vfwcap_defines"
3106 xcbgrab_indev_deps="libxcb"
3107 xcbgrab_indev_suggest="libxcb_shm libxcb_shape libxcb_xfixes"
3108 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
3109 xv_outdev_extralibs="-lXv -lX11 -lXext"
3110
3111 # protocols
3112 async_protocol_deps="threads"
3113 bluray_protocol_deps="libbluray"
3114 ffrtmpcrypt_protocol_conflict="librtmp_protocol"
3115 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
3116 ffrtmpcrypt_protocol_select="tcp_protocol"
3117 ffrtmphttp_protocol_conflict="librtmp_protocol"
3118 ffrtmphttp_protocol_select="http_protocol"
3119 ftp_protocol_select="tcp_protocol"
3120 gopher_protocol_select="network"
3121 http_protocol_select="tcp_protocol"
3122 http_protocol_suggest="zlib"
3123 httpproxy_protocol_select="tcp_protocol"
3124 httpproxy_protocol_suggest="zlib"
3125 https_protocol_select="tls_protocol"
3126 https_protocol_suggest="zlib"
3127 icecast_protocol_select="http_protocol"
3128 librtmp_protocol_deps="librtmp"
3129 librtmpe_protocol_deps="librtmp"
3130 librtmps_protocol_deps="librtmp"
3131 librtmpt_protocol_deps="librtmp"
3132 librtmpte_protocol_deps="librtmp"
3133 libsmbclient_protocol_deps="libsmbclient gplv3"
3134 libssh_protocol_deps="libssh"
3135 mmsh_protocol_select="http_protocol"
3136 mmst_protocol_select="network"
3137 rtmp_protocol_conflict="librtmp_protocol"
3138 rtmp_protocol_select="tcp_protocol"
3139 rtmp_protocol_suggest="zlib"
3140 rtmpe_protocol_select="ffrtmpcrypt_protocol"
3141 rtmpe_protocol_suggest="zlib"
3142 rtmps_protocol_conflict="librtmp_protocol"
3143 rtmps_protocol_select="tls_protocol"
3144 rtmps_protocol_suggest="zlib"
3145 rtmpt_protocol_select="ffrtmphttp_protocol"
3146 rtmpt_protocol_suggest="zlib"
3147 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
3148 rtmpte_protocol_suggest="zlib"
3149 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
3150 rtmpts_protocol_suggest="zlib"
3151 rtp_protocol_select="udp_protocol"
3152 schannel_conflict="openssl gnutls"
3153 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
3154 sctp_protocol_select="network"
3155 securetransport_conflict="openssl gnutls"
3156 srtp_protocol_select="rtp_protocol srtp"
3157 tcp_protocol_select="network"
3158 tls_protocol_deps_any="gnutls openssl schannel securetransport"
3159 tls_protocol_select="tcp_protocol"
3160 udp_protocol_select="network"
3161 udplite_protocol_select="network"
3162 unix_protocol_deps="sys_un_h"
3163 unix_protocol_select="network"
3164
3165 # filters
3166 afftfilt_filter_deps="avcodec"
3167 afftfilt_filter_select="fft"
3168 afir_filter_deps="avcodec"
3169 afir_filter_select="fft"
3170 amovie_filter_deps="avcodec avformat"
3171 aresample_filter_deps="swresample"
3172 ass_filter_deps="libass"
3173 atempo_filter_deps="avcodec"
3174 atempo_filter_select="rdft"
3175 azmq_filter_deps="libzmq"
3176 blackframe_filter_deps="gpl"
3177 boxblur_filter_deps="gpl"
3178 bs2b_filter_deps="libbs2b"
3179 colormatrix_filter_deps="gpl"
3180 coreimage_filter_deps="coreimage appkit"
3181 coreimage_filter_extralibs="-framework OpenGL"
3182 coreimagesrc_filter_deps="coreimage appkit"
3183 coreimagesrc_filter_extralibs="-framework OpenGL"
3184 cover_rect_filter_deps="avcodec avformat gpl"
3185 cropdetect_filter_deps="gpl"
3186 deinterlace_qsv_filter_deps="libmfx"
3187 deinterlace_vaapi_filter_deps="vaapi"
3188 delogo_filter_deps="gpl"
3189 deshake_filter_select="pixelutils"
3190 drawtext_filter_deps="libfreetype"
3191 drawtext_filter_suggest="libfontconfig libfribidi"
3192 elbg_filter_deps="avcodec"
3193 eq_filter_deps="gpl"
3194 fftfilt_filter_deps="avcodec"
3195 fftfilt_filter_select="rdft"
3196 find_rect_filter_deps="avcodec avformat gpl"
3197 firequalizer_filter_deps="avcodec"
3198 firequalizer_filter_select="rdft"
3199 flite_filter_deps="libflite"
3200 framerate_filter_select="pixelutils"
3201 frei0r_filter_deps="frei0r libdl"
3202 frei0r_src_filter_deps="frei0r libdl"
3203 fspp_filter_deps="gpl"
3204 geq_filter_deps="gpl"
3205 histeq_filter_deps="gpl"
3206 hqdn3d_filter_deps="gpl"
3207 interlace_filter_deps="gpl"
3208 kerndeint_filter_deps="gpl"
3209 ladspa_filter_deps="ladspa libdl"
3210 lv2_filter_deps="lv2"
3211 mcdeint_filter_deps="avcodec gpl"
3212 movie_filter_deps="avcodec avformat"
3213 mpdecimate_filter_deps="gpl"
3214 mpdecimate_filter_select="pixelutils"
3215 mptestsrc_filter_deps="gpl"
3216 negate_filter_deps="lut_filter"
3217 nnedi_filter_deps="gpl"
3218 ocr_filter_deps="libtesseract"
3219 ocv_filter_deps="libopencv"
3220 overlay_opencl_filter_deps="opencl"
3221 overlay_qsv_filter_deps="libmfx"
3222 overlay_qsv_filter_select="qsvvpp"
3223 owdenoise_filter_deps="gpl"
3224 pan_filter_deps="swresample"
3225 perspective_filter_deps="gpl"
3226 phase_filter_deps="gpl"
3227 pp7_filter_deps="gpl"
3228 pp_filter_deps="gpl postproc"
3229 pullup_filter_deps="gpl"
3230 removelogo_filter_deps="avcodec avformat swscale"
3231 repeatfields_filter_deps="gpl"
3232 resample_filter_deps="avresample"
3233 rubberband_filter_deps="librubberband"
3234 sab_filter_deps="gpl swscale"
3235 scale2ref_filter_deps="swscale"
3236 scale_filter_deps="swscale"
3237 scale_qsv_filter_deps="libmfx"
3238 select_filter_select="pixelutils"
3239 showcqt_filter_deps="avcodec avformat swscale"
3240 showcqt_filter_suggest="libfontconfig libfreetype"
3241 showcqt_filter_select="fft"
3242 showfreqs_filter_deps="avcodec"
3243 showfreqs_filter_select="fft"
3244 showspectrum_filter_deps="avcodec"
3245 showspectrum_filter_select="fft"
3246 showspectrumpic_filter_deps="avcodec"
3247 showspectrumpic_filter_select="fft"
3248 signature_filter_deps="gpl avcodec avformat"
3249 smartblur_filter_deps="gpl swscale"
3250 sofalizer_filter_deps="libmysofa avcodec"
3251 sofalizer_filter_select="fft"
3252 spectrumsynth_filter_deps="avcodec"
3253 spectrumsynth_filter_select="fft"
3254 spp_filter_deps="gpl avcodec"
3255 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3256 stereo3d_filter_deps="gpl"
3257 subtitles_filter_deps="avformat avcodec libass"
3258 super2xsai_filter_deps="gpl"
3259 pixfmts_super2xsai_test_deps="super2xsai_filter"
3260 tinterlace_filter_deps="gpl"
3261 tinterlace_merge_test_deps="tinterlace_filter"
3262 tinterlace_pad_test_deps="tinterlace_filter"
3263 tonemap_filter_deps="const_nan"
3264 unsharp_opencl_filter_deps="opencl"
3265 uspp_filter_deps="gpl avcodec"
3266 vaguedenoiser_filter_deps="gpl"
3267 vidstabdetect_filter_deps="libvidstab"
3268 vidstabtransform_filter_deps="libvidstab"
3269 libvmaf_filter_deps="libvmaf"
3270 zmq_filter_deps="libzmq"
3271 zoompan_filter_deps="swscale"
3272 zscale_filter_deps="libzimg const_nan"
3273 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3274 vpp_qsv_filter_deps="libmfx"
3275 vpp_qsv_filter_select="qsvvpp"
3276
3277 # examples
3278 avio_dir_cmd_deps="avformat avutil"
3279 avio_reading_deps="avformat avcodec avutil"
3280 decode_audio_example_deps="avcodec avutil"
3281 decode_video_example_deps="avcodec avutil"
3282 demuxing_decoding_example_deps="avcodec avformat avutil"
3283 encode_audio_example_deps="avcodec avutil"
3284 encode_video_example_deps="avcodec avutil"
3285 extract_mvs_example_deps="avcodec avformat avutil"
3286 filter_audio_example_deps="avfilter avutil"
3287 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3288 filtering_video_example_deps="avfilter avcodec avformat avutil"
3289 http_multiclient_example_deps="avformat avutil fork"
3290 hw_decode_example_deps="avcodec avformat avutil"
3291 metadata_example_deps="avformat avutil"
3292 muxing_example_deps="avcodec avformat avutil swscale"
3293 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
3294 remuxing_example_deps="avcodec avformat avutil"
3295 resampling_audio_example_deps="avutil swresample"
3296 scaling_video_example_deps="avutil swscale"
3297 transcode_aac_example_deps="avcodec avformat swresample"
3298 transcoding_example_deps="avfilter avcodec avformat avutil"
3299
3300 # EXTRALIBS_LIST
3301 cpu_init_extralibs="pthreads_extralibs"
3302 cws2fws_extralibs="zlib_extralibs"
3303
3304 # libraries, in linking order
3305 avcodec_deps="avutil"
3306 avcodec_suggest="libm"
3307 avcodec_select="null_bsf"
3308 avdevice_deps="avformat avcodec avutil"
3309 avdevice_suggest="libm"
3310 avfilter_deps="avutil"
3311 avfilter_suggest="libm"
3312 avformat_deps="avcodec avutil"
3313 avformat_suggest="libm network zlib"
3314 avresample_deps="avutil"
3315 avresample_suggest="libm"
3316 avutil_suggest="clock_gettime cuda libm libdrm libmfx opencl user32 vaapi videotoolbox corefoundation corevideo coremedia wincrypt"
3317 postproc_deps="avutil gpl"
3318 postproc_suggest="libm"
3319 swresample_deps="avutil"
3320 swresample_suggest="libm libsoxr"
3321 swscale_deps="avutil"
3322 swscale_suggest="libm"
3323
3324 avcodec_extralibs="pthreads_extralibs iconv_extralibs"
3325 avfilter_extralibs="pthreads_extralibs"
3326 avutil_extralibs="d3d11va_extralibs nanosleep_extralibs pthreads_extralibs vaapi_drm_extralibs vaapi_x11_extralibs vdpau_x11_extralibs"
3327
3328 # programs
3329 ffmpeg_deps="avcodec avfilter avformat swresample"
3330 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3331                null_filter
3332                trim_filter"
3333 ffmpeg_suggest="ole32 psapi shell32"
3334 ffplay_deps="avcodec avformat swscale swresample sdl2"
3335 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3336 ffplay_suggest="shell32"
3337 ffprobe_deps="avcodec avformat"
3338 ffprobe_suggest="shell32"
3339 ffserver_deps="avformat fork sarestart"
3340 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
3341
3342 # documentation
3343 podpages_deps="perl"
3344 manpages_deps="perl pod2man"
3345 htmlpages_deps="perl"
3346 htmlpages_deps_any="makeinfo_html texi2html"
3347 txtpages_deps="perl makeinfo"
3348 doc_deps_any="manpages htmlpages podpages txtpages"
3349
3350 # default parameters
3351
3352 logfile="ffbuild/config.log"
3353
3354 # installation paths
3355 prefix_default="/usr/local"
3356 bindir_default='${prefix}/bin'
3357 datadir_default='${prefix}/share/ffmpeg'
3358 docdir_default='${prefix}/share/doc/ffmpeg'
3359 incdir_default='${prefix}/include'
3360 libdir_default='${prefix}/lib'
3361 mandir_default='${prefix}/share/man'
3362
3363 # toolchain
3364 ar_default="ar"
3365 cc_default="gcc"
3366 cxx_default="g++"
3367 host_cc_default="gcc"
3368 doxygen_default="doxygen"
3369 install="install"
3370 ln_s_default="ln -s -f"
3371 nm_default="nm -g"
3372 pkg_config_default=pkg-config
3373 ranlib_default="ranlib"
3374 strip_default="strip"
3375 version_script='--version-script'
3376 objformat="elf32"
3377 x86asmexe_default="nasm"
3378 windres_default="windres"
3379 nvcc_default="nvcc"
3380 nvccflags_default="-gencode arch=compute_30,code=sm_30 -O2"
3381 striptype="direct"
3382
3383 # OS
3384 target_os_default=$(tolower $(uname -s))
3385 host_os=$target_os_default
3386
3387 # machine
3388 if test "$target_os_default" = aix; then
3389     arch_default=$(uname -p)
3390     strip_default="strip -X32_64"
3391 else
3392     arch_default=$(uname -m)
3393 fi
3394 cpu="generic"
3395 intrinsics="none"
3396
3397 # configurable options
3398 enable $PROGRAM_LIST
3399 enable $DOCUMENT_LIST
3400 enable $EXAMPLE_LIST
3401 enable $(filter_out avresample $LIBRARY_LIST)
3402 enable stripping
3403
3404 enable asm
3405 enable debug
3406 enable doc
3407 enable faan faandct faanidct
3408 enable optimizations
3409 enable runtime_cpudetect
3410 enable safe_bitstream_reader
3411 enable static
3412 enable swscale_alpha
3413 enable valgrind_backtrace
3414
3415 sws_max_filter_size_default=256
3416 set_default sws_max_filter_size
3417
3418 # internal components are enabled by default
3419 enable $EXTRALIBS_LIST
3420
3421 # Avoid external, non-system, libraries getting enabled by dependency resolution
3422 disable $EXTERNAL_LIBRARY_LIST $HWACCEL_LIBRARY_LIST
3423
3424 # build settings
3425 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3426 LIBPREF="lib"
3427 LIBSUF=".a"
3428 FULLNAME='$(NAME)$(BUILDSUF)'
3429 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3430 SLIBPREF="lib"
3431 SLIBSUF=".so"
3432 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3433 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3434 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3435 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3436 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3437 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3438 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
3439
3440 asflags_filter=echo
3441 cflags_filter=echo
3442 ldflags_filter=echo
3443
3444 AS_C='-c'
3445 AS_O='-o $@'
3446 CC_C='-c'
3447 CC_E='-E -o $@'
3448 CC_O='-o $@'
3449 CXX_C='-c'
3450 CXX_O='-o $@'
3451 OBJCC_C='-c'
3452 OBJCC_E='-E -o $@'
3453 OBJCC_O='-o $@'
3454 X86ASM_O='-o $@'
3455 LD_O='-o $@'
3456 LD_LIB='-l%'
3457 LD_PATH='-L'
3458 HOSTCC_C='-c'
3459 HOSTCC_E='-E -o $@'
3460 HOSTCC_O='-o $@'
3461 HOSTLD_O='-o $@'
3462 NVCC_C='-c'
3463 NVCC_O='-o $@'
3464
3465 host_extralibs='-lm'
3466 host_cflags_filter=echo
3467 host_ldflags_filter=echo
3468
3469 target_path='$(CURDIR)'
3470
3471 # since the object filename is not given with the -MM flag, the compiler
3472 # is only able to print the basename, and we must add the path ourselves
3473 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3474 DEPFLAGS='-MM'
3475
3476 mkdir -p ffbuild
3477
3478 # find source path
3479 if test -f configure; then
3480     source_path=.
3481 else
3482     source_path=$(cd $(dirname "$0"); pwd)
3483     case "$source_path" in
3484         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3485     esac
3486     test -e "$source_path/config.h" &&
3487         die "Out of tree builds are impossible with config.h in source dir."
3488 fi
3489
3490 for v in "$@"; do
3491     r=${v#*=}
3492     l=${v%"$r"}
3493     r=$(sh_quote "$r")
3494     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3495 done
3496
3497 find_things(){
3498     thing=$1
3499     pattern=$2
3500     file=$source_path/$3
3501     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
3502 }
3503
3504 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
3505 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
3506 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
3507 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
3508 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
3509 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
3510 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
3511 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
3512
3513 find_things_extern(){
3514     thing=$1
3515     pattern=$2
3516     file=$source_path/$3
3517     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
3518 }
3519
3520 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3521 HWACCEL_LIST=$(find_things_extern hwaccel AVHWAccel libavcodec/hwaccels.h)
3522 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3523
3524 AVCODEC_COMPONENTS_LIST="
3525     $BSF_LIST
3526     $DECODER_LIST
3527     $ENCODER_LIST
3528     $HWACCEL_LIST
3529     $PARSER_LIST
3530 "
3531
3532 AVDEVICE_COMPONENTS_LIST="
3533     $INDEV_LIST
3534     $OUTDEV_LIST
3535 "
3536
3537 AVFILTER_COMPONENTS_LIST="
3538     $FILTER_LIST
3539 "
3540
3541 AVFORMAT_COMPONENTS_LIST="
3542     $DEMUXER_LIST
3543     $MUXER_LIST
3544     $PROTOCOL_LIST
3545 "
3546
3547 ALL_COMPONENTS="
3548     $AVCODEC_COMPONENTS_LIST
3549     $AVDEVICE_COMPONENTS_LIST
3550     $AVFILTER_COMPONENTS_LIST
3551     $AVFORMAT_COMPONENTS_LIST
3552 "
3553
3554 for n in $COMPONENT_LIST; do
3555     v=$(toupper ${n%s})_LIST
3556     eval enable \$$v
3557     eval ${n}_if_any="\$$v"
3558 done
3559
3560 enable $ARCH_EXT_LIST
3561
3562 die_unknown(){
3563     echo "Unknown option \"$1\"."
3564     echo "See $0 --help for available options."
3565     exit 1
3566 }
3567
3568 print_in_columns() {
3569     cols=$(expr $ncols / 24)
3570     cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
3571 }
3572
3573 show_list() {
3574     suffix=_$1
3575     shift
3576     echo $* | sed s/$suffix//g | print_in_columns
3577     exit 0
3578 }
3579
3580 rand_list(){
3581     IFS=', '
3582     set -- $*
3583     unset IFS
3584     for thing; do
3585         comp=${thing%:*}
3586         prob=${thing#$comp}
3587         prob=${prob#:}
3588         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3589         echo "prob ${prob:-0.5}"
3590         printf '%s\n' $comp
3591     done
3592 }
3593
3594 do_random(){
3595     action=$1
3596     shift
3597     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3598     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3599 }
3600
3601 for opt do
3602     optval="${opt#*=}"
3603     case "$opt" in
3604         --extra-ldflags=*)
3605             add_ldflags $optval
3606         ;;
3607         --extra-ldexeflags=*)
3608             add_ldexeflags $optval
3609         ;;
3610         --extra-ldsoflags=*)
3611             add_ldsoflags $optval
3612         ;;
3613         --extra-ldlibflags=*)
3614             warn "The --extra-ldlibflags option is only provided for compatibility and will be\n"\
3615                  "removed in the future. Use --extra-ldsoflags instead."
3616             add_ldsoflags $optval
3617         ;;
3618         --extra-libs=*)
3619             add_extralibs $optval
3620         ;;
3621         --disable-devices)
3622             disable $INDEV_LIST $OUTDEV_LIST
3623         ;;
3624         --enable-debug=*)
3625             debuglevel="$optval"
3626         ;;
3627         --disable-programs)
3628             disable $PROGRAM_LIST
3629         ;;
3630         --disable-everything)
3631             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3632         ;;
3633         --disable-all)
3634             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3635             disable $LIBRARY_LIST $PROGRAM_LIST doc
3636             enable avutil
3637         ;;
3638         --enable-random|--disable-random)
3639             action=${opt%%-random}
3640             do_random ${action#--} $COMPONENT_LIST
3641         ;;
3642         --enable-random=*|--disable-random=*)
3643             action=${opt%%-random=*}
3644             do_random ${action#--} $optval
3645         ;;
3646         --enable-sdl)
3647             enable sdl2
3648         ;;
3649         --enable-*=*|--disable-*=*)
3650             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3651             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3652             eval list=\$$(toupper $thing)_LIST
3653             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3654             list=$(filter "$name" $list)
3655             [ "$list" = "" ] && warn "Option $opt did not match anything"
3656             $action $list
3657         ;;
3658         --enable-yasm|--disable-yasm)
3659             warn "The ${opt} option is only provided for compatibility and will be\n"\
3660                  "removed in the future. Use --enable-x86asm / --disable-x86asm instead."
3661             test $opt = --enable-yasm && x86asm=yes || x86asm=no
3662         ;;
3663         --yasmexe=*)
3664             warn "The --yasmexe option is only provided for compatibility and will be\n"\
3665                  "removed in the future. Use --x86asmexe instead."
3666             x86asmexe="$optval"
3667         ;;
3668         --enable-?*|--disable-?*)
3669             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3670             if is_in $option $COMPONENT_LIST; then
3671                 test $action = disable && action=unset
3672                 eval $action \$$(toupper ${option%s})_LIST
3673             elif is_in $option $CMDLINE_SELECT; then
3674                 $action $option
3675             else
3676                 die_unknown $opt
3677             fi
3678         ;;
3679         --list-*)
3680             NAME="${opt#--list-}"
3681             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3682             NAME=${NAME%s}
3683             eval show_list $NAME \$$(toupper $NAME)_LIST
3684         ;;
3685         --help|-h) show_help
3686         ;;
3687         --quiet|-q) quiet=yes
3688         ;;
3689         --fatal-warnings) enable fatal_warnings
3690         ;;
3691         --libfuzzer=*)
3692             libfuzzer_path="$optval"
3693         ;;
3694         *)
3695             optname="${opt%%=*}"
3696             optname="${optname#--}"
3697             optname=$(echo "$optname" | sed 's/-/_/g')
3698             if is_in $optname $CMDLINE_SET; then
3699                 eval $optname='$optval'
3700             elif is_in $optname $CMDLINE_APPEND; then
3701                 append $optname "$optval"
3702             else
3703                 die_unknown $opt
3704             fi
3705         ;;
3706     esac
3707 done
3708
3709 for e in $env; do
3710     eval "export $e"
3711 done
3712
3713 if disabled autodetect; then
3714
3715     # Unless iconv is explicitely disabled by the user, we still want to probe
3716     # for the iconv from the libc.
3717     disabled iconv || enable libc_iconv
3718
3719     disable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3720     disable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3721 fi
3722 # Mark specifically enabled, but normally autodetected libraries as requested.
3723 for lib in $AUTODETECT_LIBS; do
3724     enabled $lib && request $lib
3725 done
3726 #TODO: switch to $AUTODETECT_LIBS when $THREADS_LIST is supported the same way
3727 enable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3728 enable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3729
3730 disabled logging && logfile=/dev/null
3731
3732 # command line configuration sanity checks
3733
3734 # we need to build at least one lib type
3735 if ! enabled_any static shared; then
3736     cat <<EOF
3737 At least one library type must be built.
3738 Specify --enable-static to build the static libraries or --enable-shared to
3739 build the shared libraries as well. To only build the shared libraries specify
3740 --disable-static in addition to --enable-shared.
3741 EOF
3742     exit 1
3743 fi
3744
3745 die_license_disabled() {
3746     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
3747 }
3748
3749 die_license_disabled_gpl() {
3750     enabled $1 || { enabled $v && die "$v is incompatible with the gpl and --enable-$1 is not specified."; }
3751 }
3752
3753 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3754 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3755
3756 enabled gpl && map "die_license_disabled_gpl nonfree" $EXTERNAL_LIBRARY_NONFREE_LIST
3757 map "die_license_disabled nonfree" $HWACCEL_LIBRARY_NONFREE_LIST
3758
3759 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3760
3761 enabled_all gnutls openssl &&
3762     die "GnuTLS and OpenSSL must not be enabled at the same time."
3763
3764 # Disable all the library-specific components if the library itself
3765 # is disabled, see AVCODEC_LIST and following _LIST variables.
3766
3767 disable_components(){
3768     disabled ${1} && disable $(
3769         eval components="\$$(toupper ${1})_COMPONENTS"
3770         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
3771     )
3772 }
3773
3774 map 'disable_components $v' $LIBRARY_LIST
3775
3776 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
3777 set >> $logfile
3778
3779 test -n "$valgrind" && toolchain="valgrind-memcheck"
3780
3781 enabled ossfuzz && {
3782     add_cflags  -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp -fno-omit-frame-pointer
3783     add_ldflags -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp
3784 }
3785
3786 case "$toolchain" in
3787     *-asan)
3788         cc_default="${toolchain%-asan}"
3789         add_cflags  -fsanitize=address
3790         add_ldflags -fsanitize=address
3791     ;;
3792     *-msan)
3793         cc_default="${toolchain%-msan}"
3794         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
3795         add_ldflags -fsanitize=memory
3796     ;;
3797     *-tsan)
3798         cc_default="${toolchain%-tsan}"
3799         add_cflags  -fsanitize=thread -fPIE
3800         add_ldflags -fsanitize=thread -pie
3801         case "$toolchain" in
3802             gcc-tsan)
3803                 add_cflags  -fPIC
3804                 add_ldflags -fPIC
3805                 ;;
3806         esac
3807     ;;
3808     *-usan)
3809         cc_default="${toolchain%-usan}"
3810         add_cflags  -fsanitize=undefined
3811         add_ldflags -fsanitize=undefined
3812     ;;
3813     valgrind-*)
3814         target_exec_default="valgrind"
3815         case "$toolchain" in
3816             valgrind-massif)
3817                 target_exec_args="--tool=massif --alloc-fn=av_malloc --alloc-fn=av_mallocz --alloc-fn=av_calloc --alloc-fn=av_fast_padded_malloc --alloc-fn=av_fast_malloc --alloc-fn=av_realloc_f --alloc-fn=av_fast_realloc --alloc-fn=av_realloc"
3818                 ;;
3819             valgrind-memcheck)
3820                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3821                 ;;
3822         esac
3823     ;;
3824     msvc)
3825         # Check whether the current MSVC version needs the C99 converter.
3826         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3827         # support enough of C99 to build ffmpeg. Default to the new
3828         # behaviour if the regexp was unable to match anything, since this
3829         # successfully parses the version number of existing supported
3830         # versions that require the converter (MSVC 2010 and 2012).
3831         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3832         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3833             cc_default="cl"
3834             cxx_default="cl"
3835         else
3836             cc_default="c99wrap cl"
3837             cxx_default="c99wrap cl"
3838         fi
3839         ld_default="$source_path/compat/windows/mslink"
3840         nm_default="dumpbin -symbols"
3841         ar_default="lib"
3842         case "$arch" in
3843         aarch64|arm64)
3844             as_default="armasm64"
3845             ;;
3846         arm*)
3847             as_default="armasm"
3848             ;;
3849         esac
3850         target_os_default="win32"
3851         # Use a relative path for TMPDIR. This makes sure all the
3852         # ffconf temp files are written with a relative path, avoiding
3853         # issues with msys/win32 path conversion for MSVC parameters
3854         # such as -Fo<file> or -out:<file>.
3855         TMPDIR=.
3856     ;;
3857     icl)
3858         cc_default="icl"
3859         ld_default="xilink"
3860         nm_default="dumpbin -symbols"
3861         ar_default="xilib"
3862         target_os_default="win32"
3863         TMPDIR=.
3864     ;;
3865     gcov)
3866         add_cflags  -fprofile-arcs -ftest-coverage
3867         add_ldflags -fprofile-arcs -ftest-coverage
3868     ;;
3869     llvm-cov)
3870         add_cflags -fprofile-arcs -ftest-coverage
3871         add_ldflags --coverage
3872     ;;
3873     hardened)
3874         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3875         add_cflags   -fno-strict-overflow -fstack-protector-all
3876         add_ldflags  -Wl,-z,relro -Wl,-z,now
3877         add_cflags   -fPIE
3878         add_ldexeflags -fPIE -pie
3879     ;;
3880     ?*)
3881         die "Unknown toolchain $toolchain"
3882     ;;
3883 esac
3884
3885 if test -n "$cross_prefix"; then
3886     test -n "$arch" && test -n "$target_os" ||
3887         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
3888     enable cross_compile
3889 fi
3890
3891 ar_default="${cross_prefix}${ar_default}"
3892 cc_default="${cross_prefix}${cc_default}"
3893 cxx_default="${cross_prefix}${cxx_default}"
3894 nm_default="${cross_prefix}${nm_default}"
3895 pkg_config_default="${cross_prefix}${pkg_config_default}"
3896 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
3897     ranlib_default="${cross_prefix}${ranlib_default} -D"
3898 else
3899     ranlib_default="${cross_prefix}${ranlib_default}"
3900 fi
3901 strip_default="${cross_prefix}${strip_default}"
3902 windres_default="${cross_prefix}${windres_default}"
3903
3904 sysinclude_default="${sysroot}/usr/include"
3905
3906 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3907     target_exec target_os x86asmexe nvcc
3908 enabled cross_compile || host_cc_default=$cc
3909 set_default host_cc
3910
3911 pkg_config_fail_message=""
3912 if ! $pkg_config --version >/dev/null 2>&1; then
3913     warn "$pkg_config not found, library detection may fail."
3914     pkg_config=false
3915 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
3916     pkg_config_fail_message="
3917 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
3918 fi
3919
3920 if test $doxygen != $doxygen_default && \
3921   ! $doxygen --version >/dev/null 2>&1; then
3922     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3923 fi
3924
3925 exesuf() {
3926     case $1 in
3927         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3928     esac
3929 }
3930
3931 EXESUF=$(exesuf $target_os)
3932 HOSTEXESUF=$(exesuf $host_os)
3933
3934 # set temporary file name
3935 : ${TMPDIR:=$TEMPDIR}
3936 : ${TMPDIR:=$TMP}
3937 : ${TMPDIR:=/tmp}
3938
3939 if [ -n "$tempprefix" ] ; then
3940     mktemp(){
3941         tmpname="$tempprefix.${HOSTNAME}.${UID}"
3942         echo "$tmpname"
3943         mkdir "$tmpname"
3944     }
3945 elif ! check_cmd mktemp -u XXXXXX; then
3946     # simple replacement for missing mktemp
3947     # NOT SAFE FOR GENERAL USE
3948     mktemp(){
3949         tmpname="${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3950         echo "$tmpname"
3951         mkdir "$tmpname"
3952     }
3953 fi
3954
3955 FFTMPDIR=$(mktemp -d "${TMPDIR}/ffconf.XXXXXXXX" 2> /dev/null) ||
3956     die "Unable to create temporary directory in $TMPDIR."
3957
3958 tmpfile(){
3959     tmp="${FFTMPDIR}/test"$2
3960     (set -C; exec > $tmp) 2> /dev/null ||
3961         die "Unable to create temporary file in $FFTMPDIR."
3962     eval $1=$tmp
3963 }
3964
3965 trap 'rm -rf -- "$FFTMPDIR"' EXIT
3966 trap 'exit 2' INT
3967
3968 tmpfile TMPASM .asm
3969 tmpfile TMPC   .c
3970 tmpfile TMPCPP .cpp
3971 tmpfile TMPE   $EXESUF
3972 tmpfile TMPH   .h
3973 tmpfile TMPM   .m
3974 tmpfile TMPO   .o
3975 tmpfile TMPS   .S
3976 tmpfile TMPSH  .sh
3977 tmpfile TMPV   .ver
3978
3979 unset -f mktemp
3980
3981 chmod +x $TMPE
3982
3983 # make sure we can execute files in $TMPDIR
3984 cat > $TMPSH 2>> $logfile <<EOF
3985 #! /bin/sh
3986 EOF
3987 chmod +x $TMPSH >> $logfile 2>&1
3988 if ! $TMPSH >> $logfile 2>&1; then
3989     cat <<EOF
3990 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3991 variable to another directory and make sure that it is not mounted noexec.
3992 EOF
3993     die "Sanity test failed."
3994 fi
3995
3996 armasm_flags(){
3997     for flag; do
3998         case $flag in
3999             # Filter out MSVC cl.exe options from cflags that shouldn't
4000             # be passed to gas-preprocessor
4001             -M[TD]*)                                            ;;
4002             *)                  echo $flag                      ;;
4003         esac
4004    done
4005 }
4006
4007 cparser_flags(){
4008     for flag; do
4009         case $flag in
4010             -Wno-switch)             echo -Wno-switch-enum ;;
4011             -Wno-format-zero-length) ;;
4012             -Wdisabled-optimization) ;;
4013             -Wno-pointer-sign)       echo -Wno-other ;;
4014             *)                       echo $flag ;;
4015         esac
4016     done
4017 }
4018
4019 msvc_common_flags(){
4020     for flag; do
4021         case $flag in
4022             # In addition to specifying certain flags under the compiler
4023             # specific filters, they must be specified here as well or else the
4024             # generic catch all at the bottom will print the original flag.
4025             -Wall)                ;;
4026             -Wextra)              ;;
4027             -std=c99)             ;;
4028             # Common flags
4029             -fomit-frame-pointer) ;;
4030             -g)                   echo -Z7 ;;
4031             -fno-math-errno)      ;;
4032             -fno-common)          ;;
4033             -fno-signed-zeros)    ;;
4034             -fPIC)                ;;
4035             -mthumb)              ;;
4036             -march=*)             ;;
4037             -lz)                  echo zlib.lib ;;
4038             -lx264)               echo libx264.lib ;;
4039             -lstdc++)             ;;
4040             -l*)                  echo ${flag#-l}.lib ;;
4041             -LARGEADDRESSAWARE)   echo $flag ;;
4042             -L*)                  echo -libpath:${flag#-L} ;;
4043             *)                    echo $flag ;;
4044         esac
4045     done
4046 }
4047
4048 msvc_flags(){
4049     msvc_common_flags "$@"
4050     for flag; do
4051         case $flag in
4052             -Wall)                echo -W3 -wd4018 -wd4146 -wd4244 -wd4305     \
4053                                        -wd4554 ;;
4054             -Wextra)              echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
4055                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
4056                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
4057                                        -wd4307 \
4058                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
4059         esac
4060     done
4061 }
4062
4063 icl_flags(){
4064     msvc_common_flags "$@"
4065     for flag; do
4066         case $flag in
4067             # Despite what Intel's documentation says -Wall, which is supported
4068             # on Windows, does enable remarks so disable them here.
4069             -Wall)                echo $flag -Qdiag-disable:remark ;;
4070             -std=c99)             echo -Qstd=c99 ;;
4071             -flto)                echo -ipo ;;
4072         esac
4073     done
4074 }
4075
4076 icc_flags(){
4077     for flag; do
4078         case $flag in
4079             -flto)                echo -ipo ;;
4080             *)                    echo $flag ;;
4081         esac
4082     done
4083 }
4084
4085 suncc_flags(){
4086     for flag; do
4087         case $flag in
4088             -march=*|-mcpu=*)
4089                 case "${flag#*=}" in
4090                     native)                   echo -xtarget=native       ;;
4091                     v9|niagara)               echo -xarch=sparc          ;;
4092                     ultrasparc)               echo -xarch=sparcvis       ;;
4093                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
4094                     i586|pentium)             echo -xchip=pentium        ;;
4095                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
4096                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
4097                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
4098                     pentium4*)          echo -xtarget=pentium4           ;;
4099                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
4100                     *-sse3)             echo -xarch=sse3                 ;;
4101                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
4102                     bonnell)                   echo -xarch=ssse3         ;;
4103                     corei7|nehalem)            echo -xtarget=nehalem     ;;
4104                     westmere)                  echo -xtarget=westmere    ;;
4105                     silvermont)                echo -xarch=sse4_2        ;;
4106                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
4107                     core-avx*|ivybridge|haswell|broadwell|skylake*|knl)
4108                                                echo -xarch=avx           ;;
4109                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
4110                     btver1)                    echo -xarch=amdsse4a      ;;
4111                     btver2|bdver*|znver*)      echo -xarch=avx           ;;
4112                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
4113                     k8|opteron|athlon64|athlon-fx)
4114                                                echo -xarch=sse2a         ;;
4115                     athlon*)                   echo -xarch=pentium_proa  ;;
4116                 esac
4117                 ;;
4118             -std=c99)             echo -xc99              ;;
4119             -fomit-frame-pointer) echo -xregs=frameptr    ;;
4120             -fPIC)                echo -KPIC -xcode=pic32 ;;
4121             -W*,*)                echo $flag              ;;
4122             -f*-*|-W*|-mimpure-text)                      ;;
4123             -shared)              echo -G                 ;;
4124             *)                    echo $flag              ;;
4125         esac
4126     done
4127 }
4128
4129 probe_cc(){
4130     pfx=$1
4131     _cc=$2
4132     first=$3
4133
4134     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
4135     unset _ld_o _ldflags _ld_lib _ld_path
4136     unset _depflags _DEPCMD _DEPFLAGS
4137     _flags_filter=echo
4138
4139     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
4140         true # no-op to avoid reading stdin in following checks
4141     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
4142         _type=llvm_gcc
4143         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
4144         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
4145         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4146         _cflags_speed='-O3'
4147         _cflags_size='-Os'
4148     elif $_cc -v 2>&1 | grep -qi ^gcc; then
4149         _type=gcc
4150         gcc_version=$($_cc --version | head -n1)
4151         gcc_basever=$($_cc -dumpversion)
4152         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
4153         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
4154         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
4155         case $gcc_basever in
4156             2) ;;
4157             2.*) ;;
4158             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
4159         esac
4160         if [ "$first" = true ]; then
4161             case $gcc_basever in
4162                 4.2*)
4163                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
4164             esac
4165         fi
4166         _cflags_speed='-O3'
4167         _cflags_size='-Os'
4168     elif $_cc --version 2>/dev/null | grep -q ^icc; then
4169         _type=icc
4170         _ident=$($_cc --version | head -n1)
4171         _depflags='-MMD'
4172         _cflags_speed='-O3'
4173         _cflags_size='-Os'
4174         _cflags_noopt='-O1'
4175         _flags_filter=icc_flags
4176     elif $_cc -v 2>&1 | grep -q xlc; then
4177         _type=xlc
4178         _ident=$($_cc -qversion 2>/dev/null | head -n1)
4179         _cflags_speed='-O5'
4180         _cflags_size='-O5 -qcompact'
4181     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
4182         test -d "$sysroot" || die "No valid sysroot specified."
4183         _type=armcc
4184         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
4185         armcc_conf="$PWD/armcc.conf"
4186         $_cc --arm_linux_configure                 \
4187              --arm_linux_config_file="$armcc_conf" \
4188              --configure_sysroot="$sysroot"        \
4189              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
4190              die "Error creating armcc configuration file."
4191         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
4192         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
4193         as_default="${cross_prefix}gcc"
4194         _depflags='-MMD'
4195         _cflags_speed='-O3'
4196         _cflags_size='-Os'
4197     elif $_cc -v 2>&1 | grep -q clang; then
4198         _type=clang
4199         _ident=$($_cc --version 2>/dev/null | head -n1)
4200         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4201         _cflags_speed='-O3'
4202         _cflags_size='-Oz'
4203     elif $_cc -V 2>&1 | grep -q Sun; then
4204         _type=suncc
4205         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
4206         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
4207         _DEPFLAGS='-xM1 -xc99'
4208         _ldflags='-std=c99'
4209         _cflags_speed='-O5'
4210         _cflags_size='-O5 -xspace'
4211         _flags_filter=suncc_flags
4212     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
4213         _type=pathscale
4214         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4215         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4216         _cflags_speed='-O2'
4217         _cflags_size='-Os'
4218         _flags_filter='filter_out -Wdisabled-optimization'
4219     elif $_cc -v 2>&1 | grep -q Open64; then
4220         _type=open64
4221         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4222         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4223         _cflags_speed='-O2'
4224         _cflags_size='-Os'
4225         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
4226     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
4227         _type=armasm
4228         _ident=$($_cc | head -n1)
4229         # 4509: "This form of conditional instruction is deprecated"
4230         _flags="-nologo -ignore 4509"
4231         _flags_filter=armasm_flags
4232     elif $_cc 2>&1 | grep -q Intel; then
4233         _type=icl
4234         _ident=$($_cc 2>&1 | head -n1)
4235         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
4236         # Not only is O3 broken on 13.x+ but it is slower on all previous
4237         # versions (tested) as well.
4238         _cflags_speed="-O2"
4239         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
4240         if $_cc 2>&1 | grep -q Linker; then
4241             _ld_o='-out:$@'
4242         else
4243             _ld_o='-Fe$@'
4244         fi
4245         _cc_o='-Fo$@'
4246         _cc_e='-P'
4247         _flags_filter=icl_flags
4248         _ld_lib='lib%.a'
4249         _ld_path='-libpath:'
4250         # -Qdiag-error to make icl error when seeing certain unknown arguments
4251         _flags='-nologo -Qdiag-error:4044,10157'
4252         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
4253         # with MSVC which enables it by default.
4254         _cflags='-Qms0 -Qvec- -Qsimd- -GS -fp:precise'
4255         disable stripping
4256     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
4257         # lld can emulate multiple different linkers; in ms link.exe mode,
4258         # the -? parameter gives the help output which contains an identifyable
4259         # string, while it gives an error in other modes.
4260         _type=lld-link
4261         # The link.exe mode doesn't have a switch for getting the version,
4262         # but we can force it back to gnu mode and get the version from there.
4263         _ident=$($_cc -flavor gnu --version 2>/dev/null)
4264         _ld_o='-out:$@'
4265         _flags_filter=msvc_flags
4266         _ld_lib='lib%.a'
4267         _ld_path='-libpath:'
4268     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
4269         _type=msvc
4270         _ident=$($_cc 2>&1 | head -n1)
4271         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
4272         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
4273         _cflags_speed="-O2"
4274         _cflags_size="-O1"
4275         _cflags_noopt="-O1"
4276         if $_cc -nologo- 2>&1 | grep -q Linker; then
4277             _ld_o='-out:$@'
4278         else
4279             _ld_o='-Fe$@'
4280         fi
4281         _cc_o='-Fo$@'
4282         _cc_e='-P -Fi$@'
4283         _flags_filter=msvc_flags
4284         _ld_lib='lib%.a'
4285         _ld_path='-libpath:'
4286         _flags='-nologo'
4287         disable stripping
4288     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
4289         _type=cparser
4290         _ident=$($_cc --version | head -n1)
4291         _depflags='-MMD'
4292         _cflags_speed='-O4'
4293         _cflags_size='-O2'
4294         _flags_filter=cparser_flags
4295     fi
4296
4297     eval ${pfx}_type=\$_type
4298     eval ${pfx}_ident=\$_ident
4299 }
4300
4301 set_ccvars(){
4302     eval ${1}_C=\${_cc_c-\${${1}_C}}
4303     eval ${1}_E=\${_cc_e-\${${1}_E}}
4304     eval ${1}_O=\${_cc_o-\${${1}_O}}
4305
4306     if [ -n "$_depflags" ]; then
4307         eval ${1}_DEPFLAGS=\$_depflags
4308     else
4309         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
4310         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
4311         eval DEP${1}FLAGS=\$_flags
4312     fi
4313 }
4314
4315 probe_cc cc "$cc" "true"
4316 cflags_filter=$_flags_filter
4317 cflags_speed=$_cflags_speed
4318 cflags_size=$_cflags_size
4319 cflags_noopt=$_cflags_noopt
4320 add_cflags $_flags $_cflags
4321 cc_ldflags=$_ldflags
4322 set_ccvars CC
4323 set_ccvars CXX
4324
4325 probe_cc hostcc "$host_cc"
4326 host_cflags_filter=$_flags_filter
4327 host_cflags_speed=$_cflags_speed
4328 add_host_cflags  $_flags $_cflags
4329 set_ccvars HOSTCC
4330
4331 test -n "$cc_type" && enable $cc_type ||
4332     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4333
4334 : ${as_default:=$cc}
4335 : ${objcc_default:=$cc}
4336 : ${dep_cc_default:=$cc}
4337 : ${ld_default:=$cc}
4338 : ${host_ld_default:=$host_cc}
4339 set_default ar as objcc dep_cc ld ln_s host_ld windres
4340
4341 probe_cc as "$as"
4342 asflags_filter=$_flags_filter
4343 add_asflags $_flags $_cflags
4344 set_ccvars AS
4345
4346 probe_cc objcc "$objcc"
4347 objcflags_filter=$_flags_filter
4348 add_objcflags $_flags $_cflags
4349 set_ccvars OBJC
4350
4351 probe_cc ld "$ld"
4352 ldflags_filter=$_flags_filter
4353 add_ldflags $_flags $_ldflags
4354 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4355 LD_O=${_ld_o-$LD_O}
4356 LD_LIB=${_ld_lib-$LD_LIB}
4357 LD_PATH=${_ld_path-$LD_PATH}
4358
4359 probe_cc hostld "$host_ld"
4360 host_ldflags_filter=$_flags_filter
4361 add_host_ldflags $_flags $_ldflags
4362 HOSTLD_O=${_ld_o-$HOSTLD_O}
4363
4364 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4365     probe_cc depcc "$dep_cc"
4366     CCDEP=${_DEPCMD:-$DEPCMD}
4367     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4368     DEPCCFLAGS=$_flags
4369 fi
4370
4371 if $ar 2>&1 | grep -q Microsoft; then
4372     arflags="-nologo"
4373     ar_o='-out:$@'
4374 elif $ar 2>&1 | grep -q "\[D\] "; then
4375     arflags="rcD"
4376     ar_o='$@'
4377 else
4378     arflags="rc"
4379     ar_o='$@'
4380 fi
4381
4382 add_cflags $extra_cflags
4383 add_cxxflags $extra_cxxflags
4384 add_objcflags $extra_objcflags
4385 add_asflags $extra_cflags
4386
4387 if test -n "$sysroot"; then
4388     case "$cc_type" in
4389         gcc|llvm_gcc|clang)
4390             add_cppflags --sysroot="$sysroot"
4391             add_ldflags --sysroot="$sysroot"
4392         ;;
4393     esac
4394 fi
4395
4396 if test "$cpu" = host; then
4397     enabled cross_compile &&
4398         die "--cpu=host makes no sense when cross-compiling."
4399
4400     case "$cc_type" in
4401         gcc|llvm_gcc)
4402             check_native(){
4403                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4404                 sed -n "/cc1.*$1=/{
4405                             s/.*$1=\\([^ ]*\\).*/\\1/
4406                             p
4407                             q
4408                         }" $TMPE
4409             }
4410             cpu=$(check_native -march || check_native -mcpu)
4411         ;;
4412         clang)
4413             check_native(){
4414                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4415                 sed -n "/cc1.*-target-cpu /{
4416                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4417                             p
4418                             q
4419                         }" $TMPE
4420             }
4421             cpu=$(check_native -march)
4422         ;;
4423     esac
4424
4425     test "${cpu:-host}" = host &&
4426         die "--cpu=host not supported with compiler $cc"
4427 fi
4428
4429 # Deal with common $arch aliases
4430 case "$arch" in
4431     aarch64|arm64)
4432         arch="aarch64"
4433     ;;
4434     arm*|iPad*|iPhone*)
4435         arch="arm"
4436     ;;
4437     mips*|IP*)
4438         case "$arch" in
4439         *el)
4440             add_cppflags -EL
4441             add_ldflags -EL
4442         ;;
4443         *eb)
4444             add_cppflags -EB
4445             add_ldflags -EB
4446         ;;
4447         esac
4448         arch="mips"
4449     ;;
4450     parisc*|hppa*)
4451         arch="parisc"
4452     ;;
4453     "Power Macintosh"|ppc*|powerpc*)
4454         arch="ppc"
4455     ;;
4456     s390|s390x)
4457         arch="s390"
4458     ;;
4459     sh4|sh)
4460         arch="sh4"
4461     ;;
4462     sun4*|sparc*)
4463         arch="sparc"
4464     ;;
4465     tilegx|tile-gx)
4466         arch="tilegx"
4467     ;;
4468     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4469         arch="x86"
4470     ;;
4471 esac
4472
4473 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4474 enable $arch
4475
4476 # Add processor-specific flags
4477 if enabled aarch64; then
4478
4479     case $cpu in
4480         armv*)
4481             cpuflags="-march=$cpu"
4482         ;;
4483         *)
4484             cpuflags="-mcpu=$cpu"
4485         ;;
4486     esac
4487
4488 elif enabled alpha; then
4489
4490     cpuflags="-mcpu=$cpu"
4491
4492 elif enabled arm; then
4493
4494     check_arm_arch() {
4495         check_cpp_condition stddef.h \
4496             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4497             $cpuflags
4498     }
4499
4500     probe_arm_arch() {
4501         if   check_arm_arch 4;        then echo armv4
4502         elif check_arm_arch 4T;       then echo armv4t
4503         elif check_arm_arch 5;        then echo armv5
4504         elif check_arm_arch 5E;       then echo armv5e
4505         elif check_arm_arch 5T;       then echo armv5t
4506         elif check_arm_arch 5TE;      then echo armv5te
4507         elif check_arm_arch 5TEJ;     then echo armv5te
4508         elif check_arm_arch 6;        then echo armv6
4509         elif check_arm_arch 6J;       then echo armv6j
4510         elif check_arm_arch 6K;       then echo armv6k
4511         elif check_arm_arch 6Z;       then echo armv6z
4512         elif check_arm_arch 6ZK;      then echo armv6zk
4513         elif check_arm_arch 6T2;      then echo armv6t2
4514         elif check_arm_arch 7;        then echo armv7
4515         elif check_arm_arch 7A  7_A;  then echo armv7-a
4516         elif check_arm_arch 7S;       then echo armv7-a
4517         elif check_arm_arch 7R  7_R;  then echo armv7-r
4518         elif check_arm_arch 7M  7_M;  then echo armv7-m
4519         elif check_arm_arch 7EM 7E_M; then echo armv7-m
4520         elif check_arm_arch 8A  8_A;  then echo armv8-a
4521         fi
4522     }
4523
4524     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4525
4526     case $cpu in
4527         armv*)
4528             cpuflags="-march=$cpu"
4529             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4530         ;;
4531         *)
4532             cpuflags="-mcpu=$cpu"
4533             case $cpu in
4534                 cortex-a*)                               subarch=armv7a  ;;
4535                 cortex-r*)                               subarch=armv7r  ;;
4536                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4537                 arm11*)                                  subarch=armv6   ;;
4538                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4539                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4540                 *)                             subarch=$(probe_arm_arch) ;;
4541             esac
4542         ;;
4543     esac
4544
4545     case "$subarch" in
4546         armv5t*)    enable fast_clz                ;;
4547         armv[6-8]*)
4548             enable fast_clz
4549             disabled fast_unaligned || enable fast_unaligned
4550             ;;
4551     esac
4552
4553 elif enabled avr32; then
4554
4555     case $cpu in
4556         ap7[02]0[0-2])
4557             subarch="avr32_ap"
4558             cpuflags="-mpart=$cpu"
4559         ;;
4560         ap)
4561             subarch="avr32_ap"
4562             cpuflags="-march=$cpu"
4563         ;;
4564         uc3[ab]*)
4565             subarch="avr32_uc"
4566             cpuflags="-mcpu=$cpu"
4567         ;;
4568         uc)
4569             subarch="avr32_uc"
4570             cpuflags="-march=$cpu"
4571         ;;
4572     esac
4573
4574 elif enabled bfin; then
4575
4576     cpuflags="-mcpu=$cpu"
4577
4578 elif enabled mips; then
4579
4580     cpuflags="-march=$cpu"
4581
4582     if [ "$cpu" != "generic" ]; then
4583         disable mips32r2
4584         disable mips32r5
4585         disable mips64r2
4586         disable mips32r6
4587         disable mips64r6
4588         disable loongson2
4589         disable loongson3
4590
4591         case $cpu in
4592             24kc|24kf*|24kec|34kc|1004kc|24kef*|34kf*|1004kf*|74kc|74kf)
4593                 enable mips32r2
4594                 disable msa
4595             ;;
4596             p5600|i6400|p6600)
4597                 disable mipsdsp
4598                 disable mipsdspr2
4599             ;;
4600             loongson*)
4601                 enable loongson2
4602                 enable loongson3
4603                 enable local_aligned
4604                 enable simd_align_16
4605                 enable fast_64bit
4606                 enable fast_clz
4607                 enable fast_cmov
4608                 enable fast_unaligned
4609                 disable aligned_stack
4610                 disable mipsfpu
4611                 disable mipsdsp
4612                 disable mipsdspr2
4613                 case $cpu in
4614                     loongson3*)
4615                         cpuflags="-march=loongson3a -mhard-float -fno-expensive-optimizations"
4616                     ;;
4617                     loongson2e)
4618                         cpuflags="-march=loongson2e -mhard-float -fno-expensive-optimizations"
4619                     ;;
4620                     loongson2f)
4621                         cpuflags="-march=loongson2f -mhard-float -fno-expensive-optimizations"
4622                     ;;
4623                 esac
4624             ;;
4625             *)
4626                 # Unknown CPU. Disable everything.
4627                 warn "unknown CPU. Disabling all MIPS optimizations."
4628                 disable mipsfpu
4629                 disable mipsdsp
4630                 disable mipsdspr2
4631                 disable msa
4632                 disable mmi
4633             ;;
4634         esac
4635
4636         case $cpu in
4637             24kc)
4638                 disable mipsfpu
4639                 disable mipsdsp
4640                 disable mipsdspr2
4641             ;;
4642             24kf*)
4643                 disable mipsdsp
4644                 disable mipsdspr2
4645             ;;
4646             24kec|34kc|1004kc)
4647                 disable mipsfpu
4648                 disable mipsdspr2
4649             ;;
4650             24kef*|34kf*|1004kf*)
4651                 disable mipsdspr2
4652             ;;
4653             74kc)
4654                 disable mipsfpu
4655             ;;
4656             p5600)
4657                 enable mips32r5
4658                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
4659             ;;
4660             i6400)
4661                 enable mips64r6
4662                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4663             ;;
4664             p6600)
4665                 enable mips64r6
4666                 check_cflags "-mtune=p6600 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4667             ;;
4668         esac
4669     else
4670         # We do not disable anything. Is up to the user to disable the unwanted features.
4671         warn 'generic cpu selected'
4672     fi
4673
4674 elif enabled ppc; then
4675
4676     disable ldbrx
4677
4678     case $(tolower $cpu) in
4679         601|ppc601|powerpc601)
4680             cpuflags="-mcpu=601"
4681             disable altivec
4682         ;;
4683         603*|ppc603*|powerpc603*)
4684             cpuflags="-mcpu=603"
4685             disable altivec
4686         ;;
4687         604*|ppc604*|powerpc604*)
4688             cpuflags="-mcpu=604"
4689             disable altivec
4690         ;;
4691         g3|75*|ppc75*|powerpc75*)
4692             cpuflags="-mcpu=750"
4693             disable altivec
4694         ;;
4695         g4|745*|ppc745*|powerpc745*)
4696             cpuflags="-mcpu=7450"
4697             disable vsx
4698         ;;
4699         74*|ppc74*|powerpc74*)
4700             cpuflags="-mcpu=7400"
4701             disable vsx
4702         ;;
4703         g5|970|ppc970|powerpc970)
4704             cpuflags="-mcpu=970"
4705             disable vsx
4706         ;;
4707         power[3-6]*)
4708             cpuflags="-mcpu=$cpu"
4709             disable vsx
4710         ;;
4711         power[7-8]*)
4712             cpuflags="-mcpu=$cpu"
4713         ;;
4714         cell)
4715             cpuflags="-mcpu=cell"
4716             enable ldbrx
4717             disable vsx
4718         ;;
4719         e500mc)
4720             cpuflags="-mcpu=e500mc"
4721             disable altivec
4722         ;;
4723         e500v2)
4724             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
4725             disable altivec
4726             disable dcbzl
4727         ;;
4728         e500)
4729             cpuflags="-mcpu=8540 -mhard-float"
4730             disable altivec
4731             disable dcbzl
4732         ;;
4733     esac
4734
4735 elif enabled sparc; then
4736
4737     case $cpu in
4738         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
4739             cpuflags="-mcpu=$cpu"
4740         ;;
4741         ultrasparc*|niagara[234])
4742             cpuflags="-mcpu=$cpu"
4743         ;;
4744     esac
4745
4746 elif enabled x86; then
4747
4748     case $cpu in
4749         i[345]86|pentium)
4750             cpuflags="-march=$cpu"
4751             disable i686
4752             disable mmx
4753         ;;
4754         # targets that do NOT support nopl and conditional mov (cmov)
4755         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
4756             cpuflags="-march=$cpu"
4757             disable i686
4758         ;;
4759         # targets that do support nopl and conditional mov (cmov)
4760         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
4761         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|skylake*|knl\
4762         |amdfam10|barcelona|b[dt]ver*|znver*)
4763             cpuflags="-march=$cpu"
4764             enable i686
4765             enable fast_cmov
4766         ;;
4767         # targets that do support conditional mov but on which it's slow
4768         pentium4|pentium4m|prescott|nocona)
4769             cpuflags="-march=$cpu"
4770             enable i686
4771             disable fast_cmov
4772         ;;
4773     esac
4774
4775 fi
4776
4777 if [ "$cpu" != generic ]; then
4778     add_cflags  $cpuflags
4779     add_asflags $cpuflags
4780     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
4781 fi
4782
4783 # compiler sanity check
4784 check_exec <<EOF
4785 int main(void){ return 0; }
4786 EOF
4787 if test "$?" != 0; then
4788     echo "$cc is unable to create an executable file."
4789     if test -z "$cross_prefix" && ! enabled cross_compile ; then
4790         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
4791         echo "Only do this if you know what cross compiling means."
4792     fi
4793     die "C compiler test failed."
4794 fi
4795
4796 add_cppflags -D_ISOC99_SOURCE
4797 add_cxxflags -D__STDC_CONSTANT_MACROS
4798 check_cxxflags -std=c++11 || check_cxxflags -std=c++0x
4799
4800 # some compilers silently accept -std=c11, so we also need to check that the
4801 # version macro is defined properly
4802 test_cflags_cc -std=c11 ctype.h "__STDC_VERSION__ >= 201112L" &&
4803     add_cflags -std=c11 ||
4804     check_cflags -std=c99
4805
4806 check_cppflags -D_FILE_OFFSET_BITS=64
4807 check_cppflags -D_LARGEFILE_SOURCE
4808
4809 add_host_cppflags -D_ISOC99_SOURCE
4810 check_host_cflags -std=c99
4811 check_host_cflags -Wall
4812 check_host_cflags $host_cflags_speed
4813
4814 check_64bit(){
4815     arch32=$1
4816     arch64=$2
4817     expr=$3
4818     check_code cc "" "int test[2*($expr) - 1]" &&
4819         subarch=$arch64 || subarch=$arch32
4820     enable $subarch
4821 }
4822
4823 case "$arch" in
4824     aarch64|alpha|ia64)
4825         enabled shared && enable_weak pic
4826     ;;
4827     mips)
4828         check_64bit mips mips64 '_MIPS_SIM > 1'
4829         enabled shared && enable_weak pic
4830     ;;
4831     parisc)
4832         check_64bit parisc parisc64 'sizeof(void *) > 4'
4833         enabled shared && enable_weak pic
4834     ;;
4835     ppc)
4836         check_64bit ppc ppc64 'sizeof(void *) > 4'
4837         enabled shared && enable_weak pic
4838     ;;
4839     s390)
4840         check_64bit s390 s390x 'sizeof(void *) > 4'
4841         enabled shared && enable_weak pic
4842     ;;
4843     sparc)
4844         check_64bit sparc sparc64 'sizeof(void *) > 4'
4845         enabled shared && enable_weak pic
4846     ;;
4847     x86)
4848         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
4849         # Treat x32 as x64 for now. Note it also needs pic if shared
4850         test "$subarch" = "x86_32" && check_cpp_condition stddef.h 'defined(__x86_64__)' &&
4851             subarch=x86_64 && enable x86_64 && disable x86_32
4852         if enabled x86_64; then
4853             enabled shared && enable_weak pic
4854             objformat=elf64
4855         fi
4856     ;;
4857 esac
4858
4859 # OS specific
4860 case $target_os in
4861     aix)
4862         SHFLAGS=-shared
4863         add_cppflags '-I\$(SRC_PATH)/compat/aix'
4864         enabled shared && add_ldflags -Wl,-brtl
4865         arflags='-Xany -r -c'
4866         ;;
4867     android)
4868         disable symver
4869         enable section_data_rel_ro
4870         SLIB_INSTALL_NAME='$(SLIBNAME)'
4871         SLIB_INSTALL_LINKS=
4872         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
4873         ;;
4874     haiku)
4875         prefix_default="/boot/common"
4876         network_extralibs="-lnetwork"
4877         host_extralibs=
4878         ;;
4879     sunos)
4880         SHFLAGS='-shared -Wl,-h,$$(@F)'
4881         enabled x86 && append SHFLAGS -mimpure-text
4882         network_extralibs="-lsocket -lnsl"
4883         add_cppflags -D__EXTENSIONS__
4884         # When using suncc to build, the Solaris linker will mark
4885         # an executable with each instruction set encountered by
4886         # the Solaris assembler.  As our libraries contain their own
4887         # guards for processor-specific code, instead suppress
4888         # generation of the HWCAPS ELF section on Solaris x86 only.
4889         enabled_all suncc x86 &&
4890             echo "hwcap_1 = OVERRIDE;" > mapfile &&
4891             add_ldflags -Wl,-M,mapfile
4892         nm_default='nm -P -g'
4893         version_script='-M'
4894         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
4895         ;;
4896     netbsd)
4897         disable symver
4898         oss_indev_extralibs="-lossaudio"
4899         oss_outdev_extralibs="-lossaudio"
4900         enabled gcc || check_ldflags -Wl,-zmuldefs
4901         ;;
4902     openbsd|bitrig)
4903         disable symver
4904         SHFLAGS='-shared'
4905         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
4906         SLIB_INSTALL_LINKS=
4907         oss_indev_extralibs="-lossaudio"
4908         oss_outdev_extralibs="-lossaudio"
4909         ;;
4910     dragonfly)
4911         disable symver
4912         ;;
4913     freebsd)
4914         ;;
4915     bsd/os)
4916         add_extralibs -lpoll -lgnugetopt
4917         strip="strip -d"
4918         ;;
4919     darwin)
4920         enabled ppc && add_asflags -force_cpusubtype_ALL
4921         install_name_dir_default='$(SHLIBDIR)'
4922         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(INSTALL_NAME_DIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
4923         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
4924         strip="${strip} -x"
4925         add_ldflags -Wl,-dynamic,-search_paths_first
4926         check_cflags -Werror=partial-availability
4927         SLIBSUF=".dylib"
4928         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
4929         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
4930         enabled x86_64 && objformat="macho64" || objformat="macho32"
4931         enabled_any pic shared x86_64 ||
4932             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
4933         check_header dispatch/dispatch.h &&
4934             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
4935         if test -n "$sysroot"; then
4936             is_in -isysroot $cc $CPPFLAGS $CFLAGS || check_cppflags -isysroot $sysroot
4937             is_in -isysroot $ld $LDFLAGS          || check_ldflags  -isysroot $sysroot
4938         fi