examples: Add a VA-API encode example.
[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     vaapi_encode_example
1526 "
1527
1528 EXTERNAL_AUTODETECT_LIBRARY_LIST="
1529     alsa
1530     appkit
1531     avfoundation
1532     bzlib
1533     coreimage
1534     iconv
1535     libxcb
1536     libxcb_shm
1537     libxcb_shape
1538     libxcb_xfixes
1539     lzma
1540     schannel
1541     sdl2
1542     securetransport
1543     sndio
1544     xlib
1545     zlib
1546 "
1547
1548 EXTERNAL_LIBRARY_GPL_LIST="
1549     avisynth
1550     frei0r
1551     libcdio
1552     librubberband
1553     libvidstab
1554     libx264
1555     libx265
1556     libxavs
1557     libxvid
1558 "
1559
1560 EXTERNAL_LIBRARY_NONFREE_LIST="
1561     decklink
1562     libndi_newtek
1563     libfdk_aac
1564     openssl
1565 "
1566
1567 EXTERNAL_LIBRARY_VERSION3_LIST="
1568     gmp
1569     libopencore_amrnb
1570     libopencore_amrwb
1571     libvmaf
1572     libvo_amrwbenc
1573     rkmpp
1574 "
1575
1576 EXTERNAL_LIBRARY_GPLV3_LIST="
1577     libsmbclient
1578 "
1579
1580 EXTERNAL_LIBRARY_LIST="
1581     $EXTERNAL_LIBRARY_GPL_LIST
1582     $EXTERNAL_LIBRARY_NONFREE_LIST
1583     $EXTERNAL_LIBRARY_VERSION3_LIST
1584     $EXTERNAL_LIBRARY_GPLV3_LIST
1585     chromaprint
1586     gcrypt
1587     gnutls
1588     jni
1589     ladspa
1590     libass
1591     libbluray
1592     libbs2b
1593     libcaca
1594     libcelt
1595     libdc1394
1596     libdrm
1597     libflite
1598     libfontconfig
1599     libfreetype
1600     libfribidi
1601     libgme
1602     libgsm
1603     libiec61883
1604     libilbc
1605     libjack
1606     libkvazaar
1607     libmodplug
1608     libmp3lame
1609     libmysofa
1610     libopencv
1611     libopenh264
1612     libopenjpeg
1613     libopenmpt
1614     libopus
1615     libpulse
1616     librsvg
1617     librtmp
1618     libshine
1619     libsmbclient
1620     libsnappy
1621     libsoxr
1622     libspeex
1623     libssh
1624     libtesseract
1625     libtheora
1626     libtwolame
1627     libv4l2
1628     libvorbis
1629     libvpx
1630     libwavpack
1631     libwebp
1632     libxml2
1633     libzimg
1634     libzmq
1635     libzvbi
1636     lv2
1637     mediacodec
1638     openal
1639     opengl
1640 "
1641
1642 HWACCEL_AUTODETECT_LIBRARY_LIST="
1643     audiotoolbox
1644     crystalhd
1645     cuda
1646     cuvid
1647     d3d11va
1648     dxva2
1649     nvdec
1650     nvenc
1651     vaapi
1652     vdpau
1653     videotoolbox
1654     v4l2_m2m
1655     xvmc
1656 "
1657
1658 # catchall list of things that require external libs to link
1659 EXTRALIBS_LIST="
1660     cpu_init
1661     cws2fws
1662 "
1663
1664 HWACCEL_LIBRARY_NONFREE_LIST="
1665     cuda_sdk
1666     libnpp
1667 "
1668
1669 HWACCEL_LIBRARY_LIST="
1670     $HWACCEL_LIBRARY_NONFREE_LIST
1671     libmfx
1672     mmal
1673     omx
1674     opencl
1675 "
1676
1677 DOCUMENT_LIST="
1678     doc
1679     htmlpages
1680     manpages
1681     podpages
1682     txtpages
1683 "
1684
1685 FEATURE_LIST="
1686     ftrapv
1687     gray
1688     hardcoded_tables
1689     omx_rpi
1690     runtime_cpudetect
1691     safe_bitstream_reader
1692     shared
1693     small
1694     static
1695     swscale_alpha
1696 "
1697
1698 LIBRARY_LIST="
1699     avcodec
1700     avdevice
1701     avfilter
1702     avformat
1703     avresample
1704     avutil
1705     postproc
1706     swresample
1707     swscale
1708 "
1709
1710 LICENSE_LIST="
1711     gpl
1712     nonfree
1713     version3
1714 "
1715
1716 PROGRAM_LIST="
1717     ffplay
1718     ffprobe
1719     ffserver
1720     ffmpeg
1721 "
1722
1723 SUBSYSTEM_LIST="
1724     dct
1725     dwt
1726     error_resilience
1727     faan
1728     fast_unaligned
1729     fft
1730     lsp
1731     lzo
1732     mdct
1733     pixelutils
1734     network
1735     rdft
1736 "
1737
1738 # COMPONENT_LIST needs to come last to ensure correct dependency checking
1739 CONFIG_LIST="
1740     $DOCUMENT_LIST
1741     $EXAMPLE_LIST
1742     $EXTERNAL_LIBRARY_LIST
1743     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1744     $HWACCEL_LIBRARY_LIST
1745     $HWACCEL_AUTODETECT_LIBRARY_LIST
1746     $FEATURE_LIST
1747     $LICENSE_LIST
1748     $LIBRARY_LIST
1749     $PROGRAM_LIST
1750     $SUBSYSTEM_LIST
1751     autodetect
1752     fontconfig
1753     linux_perf
1754     memory_poisoning
1755     neon_clobber_test
1756     ossfuzz
1757     pic
1758     thumb
1759     valgrind_backtrace
1760     xmm_clobber_test
1761     $COMPONENT_LIST
1762 "
1763
1764 THREADS_LIST="
1765     pthreads
1766     os2threads
1767     w32threads
1768 "
1769
1770 ATOMICS_LIST="
1771     atomics_gcc
1772     atomics_suncc
1773     atomics_win32
1774 "
1775
1776 AUTODETECT_LIBS="
1777     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1778     $HWACCEL_AUTODETECT_LIBRARY_LIST
1779     $THREADS_LIST
1780 "
1781
1782 ARCH_LIST="
1783     aarch64
1784     alpha
1785     arm
1786     avr32
1787     avr32_ap
1788     avr32_uc
1789     bfin
1790     ia64
1791     m68k
1792     mips
1793     mips64
1794     parisc
1795     ppc
1796     ppc64
1797     s390
1798     sh4
1799     sparc
1800     sparc64
1801     tilegx
1802     tilepro
1803     tomi
1804     x86
1805     x86_32
1806     x86_64
1807 "
1808
1809 ARCH_EXT_LIST_ARM="
1810     armv5te
1811     armv6
1812     armv6t2
1813     armv8
1814     neon
1815     vfp
1816     vfpv3
1817     setend
1818 "
1819
1820 ARCH_EXT_LIST_MIPS="
1821     mipsfpu
1822     mips32r2
1823     mips32r5
1824     mips64r2
1825     mips32r6
1826     mips64r6
1827     mipsdsp
1828     mipsdspr2
1829     msa
1830 "
1831
1832 ARCH_EXT_LIST_LOONGSON="
1833     loongson2
1834     loongson3
1835     mmi
1836 "
1837
1838 ARCH_EXT_LIST_X86_SIMD="
1839     aesni
1840     amd3dnow
1841     amd3dnowext
1842     avx
1843     avx2
1844     fma3
1845     fma4
1846     mmx
1847     mmxext
1848     sse
1849     sse2
1850     sse3
1851     sse4
1852     sse42
1853     ssse3
1854     xop
1855 "
1856
1857 ARCH_EXT_LIST_PPC="
1858     altivec
1859     dcbzl
1860     ldbrx
1861     power8
1862     ppc4xx
1863     vsx
1864 "
1865
1866 ARCH_EXT_LIST_X86="
1867     $ARCH_EXT_LIST_X86_SIMD
1868     cpunop
1869     i686
1870 "
1871
1872 ARCH_EXT_LIST="
1873     $ARCH_EXT_LIST_ARM
1874     $ARCH_EXT_LIST_PPC
1875     $ARCH_EXT_LIST_X86
1876     $ARCH_EXT_LIST_MIPS
1877     $ARCH_EXT_LIST_LOONGSON
1878 "
1879
1880 ARCH_FEATURES="
1881     aligned_stack
1882     fast_64bit
1883     fast_clz
1884     fast_cmov
1885     local_aligned
1886     simd_align_16
1887     simd_align_32
1888 "
1889
1890 BUILTIN_LIST="
1891     atomic_cas_ptr
1892     machine_rw_barrier
1893     MemoryBarrier
1894     mm_empty
1895     rdtsc
1896     sarestart
1897     sem_timedwait
1898     sync_val_compare_and_swap
1899 "
1900 HAVE_LIST_CMDLINE="
1901     inline_asm
1902     symver
1903     x86asm
1904 "
1905
1906 HAVE_LIST_PUB="
1907     bigendian
1908     fast_unaligned
1909 "
1910
1911 HEADERS_LIST="
1912     arpa_inet_h
1913     asm_types_h
1914     cdio_paranoia_h
1915     cdio_paranoia_paranoia_h
1916     cuda_h
1917     dispatch_dispatch_h
1918     dev_bktr_ioctl_bt848_h
1919     dev_bktr_ioctl_meteor_h
1920     dev_ic_bt8xx_h
1921     dev_video_bktr_ioctl_bt848_h
1922     dev_video_meteor_ioctl_meteor_h
1923     direct_h
1924     dirent_h
1925     dxgidebug_h
1926     dxva_h
1927     ES2_gl_h
1928     gsm_h
1929     io_h
1930     machine_ioctl_bt848_h
1931     machine_ioctl_meteor_h
1932     malloc_h
1933     opencv2_core_core_c_h
1934     OpenGL_gl3_h
1935     poll_h
1936     sys_param_h
1937     sys_resource_h
1938     sys_select_h
1939     sys_soundcard_h
1940     sys_time_h
1941     sys_un_h
1942     sys_videoio_h
1943     termios_h
1944     udplite_h
1945     unistd_h
1946     valgrind_valgrind_h
1947     windows_h
1948     winsock2_h
1949 "
1950
1951 INTRINSICS_LIST="
1952     intrinsics_neon
1953 "
1954
1955 COMPLEX_FUNCS="
1956     cabs
1957     cexp
1958 "
1959
1960 MATH_FUNCS="
1961     atanf
1962     atan2f
1963     cbrt
1964     cbrtf
1965     copysign
1966     cosf
1967     erf
1968     exp2
1969     exp2f
1970     expf
1971     hypot
1972     isfinite
1973     isinf
1974     isnan
1975     ldexpf
1976     llrint
1977     llrintf
1978     log2
1979     log2f
1980     log10f
1981     lrint
1982     lrintf
1983     powf
1984     rint
1985     round
1986     roundf
1987     sinf
1988     trunc
1989     truncf
1990 "
1991
1992 SYSTEM_FEATURES="
1993     atomics_native
1994     dos_paths
1995     libc_msvcrt
1996     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
1997     section_data_rel_ro
1998     threads
1999     uwp
2000     winrt
2001 "
2002
2003 SYSTEM_FUNCS="
2004     access
2005     aligned_malloc
2006     arc4random
2007     clock_gettime
2008     closesocket
2009     CommandLineToArgvW
2010     fcntl
2011     getaddrinfo
2012     gethrtime
2013     getopt
2014     GetProcessAffinityMask
2015     GetProcessMemoryInfo
2016     GetProcessTimes
2017     getrusage
2018     GetSystemTimeAsFileTime
2019     gettimeofday
2020     glob
2021     glXGetProcAddress
2022     gmtime_r
2023     inet_aton
2024     isatty
2025     kbhit
2026     localtime_r
2027     lstat
2028     lzo1x_999_compress
2029     mach_absolute_time
2030     MapViewOfFile
2031     memalign
2032     mkstemp
2033     mmap
2034     mprotect
2035     nanosleep
2036     PeekNamedPipe
2037     posix_memalign
2038     pthread_cancel
2039     sched_getaffinity
2040     SecItemImport
2041     SetConsoleTextAttribute
2042     SetConsoleCtrlHandler
2043     setmode
2044     setrlimit
2045     Sleep
2046     strerror_r
2047     sysconf
2048     sysctl
2049     usleep
2050     UTGetOSTypeFromString
2051     VirtualAlloc
2052     wglGetProcAddress
2053 "
2054
2055 SYSTEM_LIBRARIES="
2056     vaapi_drm
2057     vaapi_x11
2058     vdpau_x11
2059     wincrypt
2060 "
2061
2062 TOOLCHAIN_FEATURES="
2063     as_arch_directive
2064     as_fpu_directive
2065     as_func
2066     as_object_arch
2067     asm_mod_q
2068     blocks_extension
2069     ebp_available
2070     ebx_available
2071     gnu_as
2072     gnu_windres
2073     ibm_asm
2074     inline_asm_direct_symbol_refs
2075     inline_asm_labels
2076     inline_asm_nonlocal_labels
2077     pragma_deprecated
2078     rsync_contimeout
2079     symver_asm_label
2080     symver_gnu_asm
2081     vfp_args
2082     xform_asm
2083     xmm_clobbers
2084 "
2085
2086 TYPES_LIST="
2087     CONDITION_VARIABLE_Ptr
2088     kCMVideoCodecType_HEVC
2089     socklen_t
2090     struct_addrinfo
2091     struct_group_source_req
2092     struct_ip_mreq_source
2093     struct_ipv6_mreq
2094     struct_msghdr_msg_flags
2095     struct_pollfd
2096     struct_rusage_ru_maxrss
2097     struct_sctp_event_subscribe
2098     struct_sockaddr_in6
2099     struct_sockaddr_sa_len
2100     struct_sockaddr_storage
2101     struct_stat_st_mtim_tv_nsec
2102     struct_v4l2_frmivalenum_discrete
2103 "
2104
2105 HAVE_LIST="
2106     $ARCH_EXT_LIST
2107     $(add_suffix _external $ARCH_EXT_LIST)
2108     $(add_suffix _inline   $ARCH_EXT_LIST)
2109     $ARCH_FEATURES
2110     $ATOMICS_LIST
2111     $BUILTIN_LIST
2112     $COMPLEX_FUNCS
2113     $HAVE_LIST_CMDLINE
2114     $HAVE_LIST_PUB
2115     $HEADERS_LIST
2116     $INTRINSICS_LIST
2117     $MATH_FUNCS
2118     $SYSTEM_FEATURES
2119     $SYSTEM_FUNCS
2120     $SYSTEM_LIBRARIES
2121     $THREADS_LIST
2122     $TOOLCHAIN_FEATURES
2123     $TYPES_LIST
2124     makeinfo
2125     makeinfo_html
2126     opencl_d3d11
2127     opencl_drm_arm
2128     opencl_dxva2
2129     opencl_vaapi_beignet
2130     opencl_vaapi_intel_media
2131     perl
2132     pod2man
2133     texi2html
2134 "
2135
2136 # options emitted with CONFIG_ prefix but not available on the command line
2137 CONFIG_EXTRA="
2138     aandcttables
2139     ac3dsp
2140     adts_header
2141     audio_frame_queue
2142     audiodsp
2143     blockdsp
2144     bswapdsp
2145     cabac
2146     cbs
2147     cbs_h264
2148     cbs_h265
2149     cbs_mpeg2
2150     dirac_parse
2151     dvprofile
2152     exif
2153     faandct
2154     faanidct
2155     fdctdsp
2156     flacdsp
2157     fmtconvert
2158     frame_thread_encoder
2159     g722dsp
2160     golomb
2161     gplv3
2162     h263dsp
2163     h264chroma
2164     h264dsp
2165     h264parse
2166     h264pred
2167     h264qpel
2168     hevcparse
2169     hpeldsp
2170     huffman
2171     huffyuvdsp
2172     huffyuvencdsp
2173     idctdsp
2174     iirfilter
2175     mdct15
2176     intrax8
2177     iso_media
2178     ividsp
2179     jpegtables
2180     lgplv3
2181     libx262
2182     llauddsp
2183     llviddsp
2184     llvidencdsp
2185     lpc
2186     lzf
2187     me_cmp
2188     mpeg_er
2189     mpegaudio
2190     mpegaudiodsp
2191     mpegaudioheader
2192     mpegvideo
2193     mpegvideoenc
2194     mss34dsp
2195     pixblockdsp
2196     qpeldsp
2197     qsv
2198     qsvdec
2199     qsvenc
2200     qsvvpp
2201     rangecoder
2202     riffdec
2203     riffenc
2204     rtpdec
2205     rtpenc_chain
2206     rv34dsp
2207     sinewin
2208     snappy
2209     srtp
2210     startcode
2211     texturedsp
2212     texturedspenc
2213     tpeldsp
2214     vaapi_1
2215     vaapi_encode
2216     vc1dsp
2217     videodsp
2218     vp3dsp
2219     vp56dsp
2220     vp8dsp
2221     wma_freqs
2222     wmv2dsp
2223 "
2224
2225 CMDLINE_SELECT="
2226     $ARCH_EXT_LIST
2227     $CONFIG_LIST
2228     $HAVE_LIST_CMDLINE
2229     $THREADS_LIST
2230     asm
2231     cross_compile
2232     debug
2233     extra_warnings
2234     logging
2235     lto
2236     optimizations
2237     rpath
2238     stripping
2239 "
2240
2241 PATHS_LIST="
2242     bindir
2243     datadir
2244     docdir
2245     incdir
2246     libdir
2247     mandir
2248     pkgconfigdir
2249     prefix
2250     shlibdir
2251     install_name_dir
2252 "
2253
2254 CMDLINE_SET="
2255     $PATHS_LIST
2256     ar
2257     arch
2258     as
2259     assert_level
2260     build_suffix
2261     cc
2262     objcc
2263     cpu
2264     cross_prefix
2265     custom_allocator
2266     cxx
2267     dep_cc
2268     doxygen
2269     env
2270     extra_version
2271     gas
2272     host_cc
2273     host_cflags
2274     host_extralibs
2275     host_ld
2276     host_ldflags
2277     host_os
2278     ignore_tests
2279     install
2280     ld
2281     ln_s
2282     logfile
2283     malloc_prefix
2284     nm
2285     optflags
2286     nvccflags
2287     pkg_config
2288     pkg_config_flags
2289     progs_suffix
2290     random_seed
2291     ranlib
2292     samples
2293     strip
2294     sws_max_filter_size
2295     sysinclude
2296     sysroot
2297     target_exec
2298     target_os
2299     target_path
2300     target_samples
2301     tempprefix
2302     toolchain
2303     valgrind
2304     x86asmexe
2305 "
2306
2307 CMDLINE_APPEND="
2308     extra_cflags
2309     extra_cxxflags
2310     extra_objcflags
2311     host_cppflags
2312 "
2313
2314 # code dependency declarations
2315
2316 # architecture extensions
2317
2318 armv5te_deps="arm"
2319 armv6_deps="arm"
2320 armv6t2_deps="arm"
2321 armv8_deps="aarch64"
2322 neon_deps_any="aarch64 arm"
2323 intrinsics_neon_deps="neon"
2324 vfp_deps_any="aarch64 arm"
2325 vfpv3_deps="vfp"
2326 setend_deps="arm"
2327
2328 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2329
2330 altivec_deps="ppc"
2331 dcbzl_deps="ppc"
2332 ldbrx_deps="ppc"
2333 ppc4xx_deps="ppc"
2334 vsx_deps="altivec"
2335 power8_deps="vsx"
2336
2337 loongson2_deps="mips"
2338 loongson3_deps="mips"
2339 mips32r2_deps="mips"
2340 mips32r5_deps="mips"
2341 mips32r6_deps="mips"
2342 mips64r2_deps="mips"
2343 mips64r6_deps="mips"
2344 mipsfpu_deps="mips"
2345 mipsdsp_deps="mips"
2346 mipsdspr2_deps="mips"
2347 mmi_deps="mips"
2348 msa_deps="mipsfpu"
2349
2350 cpunop_deps="i686"
2351 x86_64_select="i686"
2352 x86_64_suggest="fast_cmov"
2353
2354 amd3dnow_deps="mmx"
2355 amd3dnowext_deps="amd3dnow"
2356 i686_deps="x86"
2357 mmx_deps="x86"
2358 mmxext_deps="mmx"
2359 sse_deps="mmxext"
2360 sse2_deps="sse"
2361 sse3_deps="sse2"
2362 ssse3_deps="sse3"
2363 sse4_deps="ssse3"
2364 sse42_deps="sse4"
2365 aesni_deps="sse42"
2366 avx_deps="sse42"
2367 xop_deps="avx"
2368 fma3_deps="avx"
2369 fma4_deps="avx"
2370 avx2_deps="avx"
2371
2372 mmx_external_deps="x86asm"
2373 mmx_inline_deps="inline_asm x86"
2374 mmx_suggest="mmx_external mmx_inline"
2375
2376 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2377     eval dep=\$${ext}_deps
2378     eval ${ext}_external_deps='"${dep}_external"'
2379     eval ${ext}_inline_deps='"${dep}_inline"'
2380     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2381 done
2382
2383 aligned_stack_if_any="aarch64 ppc x86"
2384 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2385 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2386 fast_unaligned_if_any="aarch64 ppc x86"
2387 simd_align_16_if_any="altivec neon sse"
2388 simd_align_32_if_any="avx"
2389
2390 # system capabilities
2391 symver_if_any="symver_asm_label symver_gnu_asm"
2392 valgrind_backtrace_conflict="optimizations"
2393 valgrind_backtrace_deps="valgrind_valgrind_h"
2394
2395 # threading support
2396 atomics_gcc_if="sync_val_compare_and_swap"
2397 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2398 atomics_win32_if="MemoryBarrier"
2399 atomics_native_if_any="$ATOMICS_LIST"
2400 w32threads_deps="atomics_native"
2401 threads_if_any="$THREADS_LIST"
2402
2403 # subsystems
2404 cbs_h264_select="cbs golomb"
2405 cbs_h265_select="cbs golomb"
2406 cbs_mpeg2_select="cbs"
2407 dct_select="rdft"
2408 dirac_parse_select="golomb"
2409 error_resilience_select="me_cmp"
2410 faandct_deps="faan"
2411 faandct_select="fdctdsp"
2412 faanidct_deps="faan"
2413 faanidct_select="idctdsp"
2414 h264dsp_select="startcode"
2415 hevcparse_select="golomb"
2416 frame_thread_encoder_deps="encoders threads"
2417 intrax8_select="blockdsp idctdsp"
2418 mdct_select="fft"
2419 mdct15_select="fft"
2420 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2421 mpeg_er_select="error_resilience"
2422 mpegaudio_select="mpegaudiodsp mpegaudioheader"
2423 mpegaudiodsp_select="dct"
2424 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2425 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
2426 vc1dsp_select="h264chroma qpeldsp startcode"
2427 rdft_select="fft"
2428
2429 # decoders / encoders
2430 aac_decoder_select="adts_header mdct15 mdct sinewin"
2431 aac_fixed_decoder_select="mdct sinewin"
2432 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2433 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2434 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2435 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2436 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2437 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2438 adpcm_g722_decoder_select="g722dsp"
2439 adpcm_g722_encoder_select="g722dsp"
2440 aic_decoder_select="golomb idctdsp"
2441 alac_encoder_select="lpc"
2442 als_decoder_select="bswapdsp"
2443 amrnb_decoder_select="lsp"
2444 amrwb_decoder_select="lsp"
2445 amv_decoder_select="sp5x_decoder exif"
2446 amv_encoder_select="aandcttables jpegtables mpegvideoenc"
2447 ape_decoder_select="bswapdsp llauddsp"
2448 apng_decoder_deps="zlib"
2449 apng_encoder_deps="zlib"
2450 apng_encoder_select="llvidencdsp"
2451 aptx_decoder_select="audio_frame_queue"
2452 aptx_encoder_select="audio_frame_queue"
2453 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2454 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2455 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2456 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2457 atrac1_decoder_select="mdct sinewin"
2458 atrac3_decoder_select="mdct"
2459 atrac3p_decoder_select="mdct sinewin"
2460 avrn_decoder_select="exif jpegtables"
2461 bink_decoder_select="blockdsp hpeldsp"
2462 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2463 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2464 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2465 clearvideo_decoder_select="idctdsp"
2466 cllc_decoder_select="bswapdsp"
2467 comfortnoise_encoder_select="lpc"
2468 cook_decoder_select="audiodsp mdct sinewin"
2469 cscd_decoder_select="lzo"
2470 cscd_decoder_suggest="zlib"
2471 dca_decoder_select="mdct"
2472 dds_decoder_select="texturedsp"
2473 dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
2474 dnxhd_decoder_select="blockdsp idctdsp"
2475 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2476 dolby_e_decoder_select="mdct"
2477 dvvideo_decoder_select="dvprofile idctdsp"
2478 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2479 dxa_decoder_deps="zlib"
2480 dxv_decoder_select="lzf texturedsp"
2481 eac3_decoder_select="ac3_decoder"
2482 eac3_encoder_select="ac3_encoder"
2483 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2484 eatgq_decoder_select="aandcttables"
2485 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2486 exr_decoder_deps="zlib"
2487 ffv1_decoder_select="rangecoder"
2488 ffv1_encoder_select="rangecoder"
2489 ffvhuff_decoder_select="huffyuv_decoder"
2490 ffvhuff_encoder_select="huffyuv_encoder"
2491 fic_decoder_select="golomb"
2492 flac_decoder_select="flacdsp"
2493 flac_encoder_select="bswapdsp flacdsp lpc"
2494 flashsv2_decoder_deps="zlib"
2495 flashsv2_encoder_deps="zlib"
2496 flashsv_decoder_deps="zlib"
2497 flashsv_encoder_deps="zlib"
2498 flv_decoder_select="h263_decoder"
2499 flv_encoder_select="h263_encoder"
2500 fourxm_decoder_select="blockdsp bswapdsp"
2501 fraps_decoder_select="bswapdsp huffman"
2502 g2m_decoder_deps="zlib"
2503 g2m_decoder_select="blockdsp idctdsp jpegtables"
2504 g729_decoder_select="audiodsp"
2505 h261_decoder_select="mpegvideo"
2506 h261_encoder_select="aandcttables mpegvideoenc"
2507 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2508 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2509 h263i_decoder_select="h263_decoder"
2510 h263p_decoder_select="h263_decoder"
2511 h263p_encoder_select="h263_encoder"
2512 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
2513 h264_decoder_suggest="error_resilience"
2514 hap_decoder_select="snappy texturedsp"
2515 hap_encoder_deps="libsnappy"
2516 hap_encoder_select="texturedspenc"
2517 hevc_decoder_select="bswapdsp cabac golomb hevcparse videodsp"
2518 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2519 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llvidencdsp"
2520 iac_decoder_select="imc_decoder"
2521 imc_decoder_select="bswapdsp fft mdct sinewin"
2522 indeo3_decoder_select="hpeldsp"
2523 indeo4_decoder_select="ividsp"
2524 indeo5_decoder_select="ividsp"
2525 interplay_video_decoder_select="hpeldsp"
2526 jpegls_decoder_select="mjpeg_decoder"
2527 jv_decoder_select="blockdsp"
2528 lagarith_decoder_select="llviddsp"
2529 ljpeg_encoder_select="aandcttables idctdsp jpegtables mpegvideoenc"
2530 magicyuv_decoder_select="llviddsp"
2531 magicyuv_encoder_select="llvidencdsp"
2532 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2533 metasound_decoder_select="lsp mdct sinewin"
2534 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2535 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2536 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2537 mjpegb_decoder_select="mjpeg_decoder"
2538 mlp_decoder_select="mlp_parser"
2539 mlp_encoder_select="lpc"
2540 motionpixels_decoder_select="bswapdsp"
2541 mp1_decoder_select="mpegaudio"
2542 mp1float_decoder_select="mpegaudio"
2543 mp2_decoder_select="mpegaudio"
2544 mp2float_decoder_select="mpegaudio"
2545 mp3_decoder_select="mpegaudio"
2546 mp3adu_decoder_select="mpegaudio"
2547 mp3adufloat_decoder_select="mpegaudio"
2548 mp3float_decoder_select="mpegaudio"
2549 mp3on4_decoder_select="mpegaudio"
2550 mp3on4float_decoder_select="mpegaudio"
2551 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2552 mpc8_decoder_select="mpegaudiodsp"
2553 mpegvideo_decoder_select="mpegvideo"
2554 mpeg1video_decoder_select="mpegvideo"
2555 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2556 mpeg2video_decoder_select="mpegvideo"
2557 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2558 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2559 mpeg4_encoder_select="h263_encoder"
2560 msa1_decoder_select="mss34dsp"
2561 mscc_decoder_deps="zlib"
2562 msmpeg4v1_decoder_select="h263_decoder"
2563 msmpeg4v2_decoder_select="h263_decoder"
2564 msmpeg4v2_encoder_select="h263_encoder"
2565 msmpeg4v3_decoder_select="h263_decoder"
2566 msmpeg4v3_encoder_select="h263_encoder"
2567 mss2_decoder_select="mpegvideo qpeldsp vc1_decoder"
2568 mts2_decoder_select="mss34dsp"
2569 mxpeg_decoder_select="mjpeg_decoder"
2570 nellymoser_decoder_select="mdct sinewin"
2571 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2572 nuv_decoder_select="idctdsp lzo"
2573 on2avc_decoder_select="mdct"
2574 opus_decoder_deps="swresample"
2575 opus_decoder_select="mdct15"
2576 opus_encoder_select="audio_frame_queue mdct15"
2577 png_decoder_deps="zlib"
2578 png_encoder_deps="zlib"
2579 png_encoder_select="llvidencdsp"
2580 prores_decoder_select="blockdsp idctdsp"
2581 prores_encoder_select="fdctdsp"
2582 qcelp_decoder_select="lsp"
2583 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2584 ra_144_decoder_select="audiodsp"
2585 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2586 ralf_decoder_select="golomb"
2587 rawvideo_decoder_select="bswapdsp"
2588 rscc_decoder_deps="zlib"
2589 rtjpeg_decoder_select="me_cmp"
2590 rv10_decoder_select="h263_decoder"
2591 rv10_encoder_select="h263_encoder"
2592 rv20_decoder_select="h263_decoder"
2593 rv20_encoder_select="h263_encoder"
2594 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2595 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2596 screenpresso_decoder_deps="zlib"
2597 shorten_decoder_select="bswapdsp"
2598 sipr_decoder_select="lsp"
2599 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2600 snow_encoder_select="aandcttables dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2601 sonic_decoder_select="golomb rangecoder"
2602 sonic_encoder_select="golomb rangecoder"
2603 sonic_ls_encoder_select="golomb rangecoder"
2604 sp5x_decoder_select="mjpeg_decoder"
2605 srgc_decoder_deps="zlib"
2606 svq1_decoder_select="hpeldsp"
2607 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2608 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2609 svq3_decoder_suggest="zlib"
2610 tak_decoder_select="audiodsp"
2611 tdsc_decoder_deps="zlib"
2612 tdsc_decoder_select="mjpeg_decoder"
2613 theora_decoder_select="vp3_decoder"
2614 thp_decoder_select="mjpeg_decoder"
2615 tiff_decoder_suggest="zlib lzma"
2616 tiff_encoder_suggest="zlib"
2617 truehd_decoder_select="mlp_parser"
2618 truehd_encoder_select="lpc"
2619 truemotion2_decoder_select="bswapdsp"
2620 truespeech_decoder_select="bswapdsp"
2621 tscc_decoder_deps="zlib"
2622 twinvq_decoder_select="mdct lsp sinewin"
2623 txd_decoder_select="texturedsp"
2624 utvideo_decoder_select="bswapdsp llviddsp"
2625 utvideo_encoder_select="bswapdsp huffman llvidencdsp"
2626 vble_decoder_select="llviddsp"
2627 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 mpegvideo vc1dsp"
2628 vc1image_decoder_select="vc1_decoder"
2629 vorbis_decoder_select="mdct"
2630 vorbis_encoder_select="mdct"
2631 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2632 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2633 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2634 vp6a_decoder_select="vp6_decoder"
2635 vp6f_decoder_select="vp6_decoder"
2636 vp7_decoder_select="h264pred videodsp vp8dsp"
2637 vp8_decoder_select="h264pred videodsp vp8dsp"
2638 vp9_decoder_select="videodsp vp9_parser"
2639 webp_decoder_select="vp8_decoder exif"
2640 wmalossless_decoder_select="llauddsp"
2641 wmapro_decoder_select="mdct sinewin wma_freqs"
2642 wmav1_decoder_select="mdct sinewin wma_freqs"
2643 wmav1_encoder_select="mdct sinewin wma_freqs"
2644 wmav2_decoder_select="mdct sinewin wma_freqs"
2645 wmav2_encoder_select="mdct sinewin wma_freqs"
2646 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2647 wmv1_decoder_select="h263_decoder"
2648 wmv1_encoder_select="h263_encoder"
2649 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2650 wmv2_encoder_select="h263_encoder wmv2dsp"
2651 wmv3_decoder_select="vc1_decoder"
2652 wmv3image_decoder_select="wmv3_decoder"
2653 xma1_decoder_select="wmapro_decoder"
2654 xma2_decoder_select="wmapro_decoder"
2655 zerocodec_decoder_deps="zlib"
2656 zlib_decoder_deps="zlib"
2657 zlib_encoder_deps="zlib"
2658 zmbv_decoder_deps="zlib"
2659 zmbv_encoder_deps="zlib"
2660
2661 # hardware accelerators
2662 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2663 cuda_deps_any="libdl LoadLibrary"
2664 cuvid_deps="cuda"
2665 d3d11va_deps="dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2666 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode ole32 user32"
2667 nvdec_deps="cuda"
2668 videotoolbox_hwaccel_deps="videotoolbox pthreads"
2669 videotoolbox_hwaccel_extralibs="-framework QuartzCore"
2670 xvmc_deps="X11_extensions_XvMClib_h"
2671
2672 h263_vaapi_hwaccel_deps="vaapi"
2673 h263_vaapi_hwaccel_select="h263_decoder"
2674 h263_videotoolbox_hwaccel_deps="videotoolbox"
2675 h263_videotoolbox_hwaccel_select="h263_decoder"
2676 h264_d3d11va_hwaccel_deps="d3d11va"
2677 h264_d3d11va_hwaccel_select="h264_decoder"
2678 h264_d3d11va2_hwaccel_deps="d3d11va"
2679 h264_d3d11va2_hwaccel_select="h264_decoder"
2680 h264_dxva2_hwaccel_deps="dxva2"
2681 h264_dxva2_hwaccel_select="h264_decoder"
2682 h264_nvdec_hwaccel_deps="nvdec"
2683 h264_nvdec_hwaccel_select="h264_decoder"
2684 h264_vaapi_hwaccel_deps="vaapi"
2685 h264_vaapi_hwaccel_select="h264_decoder"
2686 h264_vdpau_hwaccel_deps="vdpau"
2687 h264_vdpau_hwaccel_select="h264_decoder"
2688 h264_videotoolbox_hwaccel_deps="videotoolbox"
2689 h264_videotoolbox_hwaccel_select="h264_decoder"
2690 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2691 hevc_d3d11va_hwaccel_select="hevc_decoder"
2692 hevc_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2693 hevc_d3d11va2_hwaccel_select="hevc_decoder"
2694 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2695 hevc_dxva2_hwaccel_select="hevc_decoder"
2696 hevc_nvdec_hwaccel_deps="nvdec"
2697 hevc_nvdec_hwaccel_select="hevc_decoder"
2698 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2699 hevc_vaapi_hwaccel_select="hevc_decoder"
2700 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2701 hevc_vdpau_hwaccel_select="hevc_decoder"
2702 hevc_videotoolbox_hwaccel_deps="videotoolbox"
2703 hevc_videotoolbox_hwaccel_select="hevc_decoder"
2704 mpeg_xvmc_hwaccel_deps="xvmc"
2705 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2706 mpeg1_nvdec_hwaccel_deps="nvdec"
2707 mpeg1_nvdec_hwaccel_select="mpeg1video_decoder"
2708 mpeg1_vdpau_hwaccel_deps="vdpau"
2709 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2710 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2711 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2712 mpeg1_xvmc_hwaccel_deps="xvmc"
2713 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2714 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2715 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2716 mpeg2_d3d11va2_hwaccel_deps="d3d11va"
2717 mpeg2_d3d11va2_hwaccel_select="mpeg2video_decoder"
2718 mpeg2_dxva2_hwaccel_deps="dxva2"
2719 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2720 mpeg2_nvdec_hwaccel_deps="nvdec"
2721 mpeg2_nvdec_hwaccel_select="mpeg2video_decoder"
2722 mpeg2_vaapi_hwaccel_deps="vaapi"
2723 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2724 mpeg2_vdpau_hwaccel_deps="vdpau"
2725 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2726 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2727 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2728 mpeg2_xvmc_hwaccel_deps="xvmc"
2729 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2730 mpeg4_nvdec_hwaccel_deps="nvdec"
2731 mpeg4_nvdec_hwaccel_select="mpeg4_decoder"
2732 mpeg4_vaapi_hwaccel_deps="vaapi"
2733 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2734 mpeg4_vdpau_hwaccel_deps="vdpau"
2735 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2736 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2737 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2738 vc1_d3d11va_hwaccel_deps="d3d11va"
2739 vc1_d3d11va_hwaccel_select="vc1_decoder"
2740 vc1_d3d11va2_hwaccel_deps="d3d11va"
2741 vc1_d3d11va2_hwaccel_select="vc1_decoder"
2742 vc1_dxva2_hwaccel_deps="dxva2"
2743 vc1_dxva2_hwaccel_select="vc1_decoder"
2744 vc1_nvdec_hwaccel_deps="nvdec"
2745 vc1_nvdec_hwaccel_select="vc1_decoder"
2746 vc1_vaapi_hwaccel_deps="vaapi"
2747 vc1_vaapi_hwaccel_select="vc1_decoder"
2748 vc1_vdpau_hwaccel_deps="vdpau"
2749 vc1_vdpau_hwaccel_select="vc1_decoder"
2750 vp8_nvdec_hwaccel_deps="nvdec"
2751 vp8_nvdec_hwaccel_select="vp8_decoder"
2752 vp8_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferVP8"
2753 vp8_vaapi_hwaccel_select="vp8_decoder"
2754 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2755 vp9_d3d11va_hwaccel_select="vp9_decoder"
2756 vp9_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2757 vp9_d3d11va2_hwaccel_select="vp9_decoder"
2758 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
2759 vp9_dxva2_hwaccel_select="vp9_decoder"
2760 vp9_nvdec_hwaccel_deps="nvdec"
2761 vp9_nvdec_hwaccel_select="vp9_decoder"
2762 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9_bit_depth"
2763 vp9_vaapi_hwaccel_select="vp9_decoder"
2764 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2765 wmv3_d3d11va2_hwaccel_select="vc1_d3d11va2_hwaccel"
2766 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2767 wmv3_nvdec_hwaccel_select="vc1_nvdec_hwaccel"
2768 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2769 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2770
2771 # hardware-accelerated codecs
2772 omx_deps="libdl pthreads"
2773 omx_rpi_select="omx"
2774 qsv_deps="libmfx"
2775 qsvdec_select="qsv"
2776 qsvenc_select="qsv"
2777 qsvvpp_select="qsv"
2778 vaapi_encode_deps="vaapi"
2779 v4l2_m2m_deps_any="linux_videodev2_h"
2780
2781 hwupload_cuda_filter_deps="cuda"
2782 scale_npp_filter_deps="cuda libnpp"
2783 scale_cuda_filter_deps="cuda_sdk"
2784 thumbnail_cuda_filter_deps="cuda_sdk"
2785
2786 nvenc_deps="cuda"
2787 nvenc_deps_any="libdl LoadLibrary"
2788 nvenc_encoder_deps="nvenc"
2789
2790 h263_v4l2m2m_decoder_deps="v4l2_m2m h263_v4l2_m2m"
2791 h263_v4l2m2m_encoder_deps="v4l2_m2m h263_v4l2_m2m"
2792 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2793 h264_cuvid_decoder_deps="cuvid"
2794 h264_cuvid_decoder_select="h264_mp4toannexb_bsf"
2795 h264_mediacodec_decoder_deps="mediacodec"
2796 h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
2797 h264_mmal_decoder_deps="mmal"
2798 h264_nvenc_encoder_deps="nvenc"
2799 h264_omx_encoder_deps="omx"
2800 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec"
2801 h264_qsv_encoder_select="qsvenc"
2802 h264_rkmpp_decoder_deps="rkmpp"
2803 h264_rkmpp_decoder_select="h264_mp4toannexb_bsf"
2804 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2805 h264_vaapi_encoder_select="cbs_h264 vaapi_encode"
2806 h264_v4l2m2m_decoder_deps="v4l2_m2m h264_v4l2_m2m"
2807 h264_v4l2m2m_encoder_deps="v4l2_m2m h264_v4l2_m2m"
2808 hevc_cuvid_decoder_deps="cuvid"
2809 hevc_cuvid_decoder_select="hevc_mp4toannexb_bsf"
2810 hevc_mediacodec_decoder_deps="mediacodec"
2811 hevc_mediacodec_decoder_select="hevc_mp4toannexb_bsf hevc_parser"
2812 hevc_nvenc_encoder_deps="nvenc"
2813 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec"
2814 hevc_qsv_encoder_select="hevcparse qsvenc"
2815 hevc_rkmpp_decoder_deps="rkmpp"
2816 hevc_rkmpp_decoder_select="hevc_mp4toannexb_bsf"
2817 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2818 hevc_vaapi_encoder_select="cbs_h265 vaapi_encode"
2819 hevc_v4l2m2m_decoder_deps="v4l2_m2m hevc_v4l2_m2m"
2820 hevc_v4l2m2m_encoder_deps="v4l2_m2m hevc_v4l2_m2m"
2821 mjpeg_cuvid_decoder_deps="cuvid"
2822 mjpeg_qsv_encoder_deps="libmfx"
2823 mjpeg_qsv_encoder_select="qsvenc"
2824 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2825 mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
2826 mpeg1_cuvid_decoder_deps="cuvid"
2827 mpeg1_v4l2m2m_decoder_deps="v4l2_m2m mpeg1_v4l2_m2m"
2828 mpeg2_crystalhd_decoder_select="crystalhd"
2829 mpeg2_cuvid_decoder_deps="cuvid"
2830 mpeg2_mmal_decoder_deps="mmal"
2831 mpeg2_mediacodec_decoder_deps="mediacodec"
2832 mpeg2_qsv_decoder_select="qsvdec mpegvideo_parser"
2833 mpeg2_qsv_encoder_select="qsvenc"
2834 mpeg2_vaapi_encoder_deps="VAEncPictureParameterBufferMPEG2"
2835 mpeg2_vaapi_encoder_select="cbs_mpeg2 vaapi_encode"
2836 mpeg2_v4l2m2m_decoder_deps="v4l2_m2m mpeg2_v4l2_m2m"
2837 mpeg4_crystalhd_decoder_select="crystalhd"
2838 mpeg4_cuvid_decoder_deps="cuvid"
2839 mpeg4_mediacodec_decoder_deps="mediacodec"
2840 mpeg4_mmal_decoder_deps="mmal"
2841 mpeg4_omx_encoder_deps="omx"
2842 mpeg4_v4l2m2m_decoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
2843 mpeg4_v4l2m2m_encoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
2844 msmpeg4_crystalhd_decoder_select="crystalhd"
2845 nvenc_h264_encoder_select="h264_nvenc_encoder"
2846 nvenc_hevc_encoder_select="hevc_nvenc_encoder"
2847 vc1_crystalhd_decoder_select="crystalhd"
2848 vc1_cuvid_decoder_deps="cuvid"
2849 vc1_mmal_decoder_deps="mmal"
2850 vc1_qsv_decoder_select="qsvdec vc1_parser"
2851 vc1_v4l2m2m_decoder_deps="v4l2_m2m vc1_v4l2_m2m"
2852 vp8_cuvid_decoder_deps="cuvid"
2853 vp8_mediacodec_decoder_deps="mediacodec"
2854 vp8_qsv_decoder_select="qsvdec vp8_parser"
2855 vp8_rkmpp_decoder_deps="rkmpp"
2856 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
2857 vp8_vaapi_encoder_select="vaapi_encode"
2858 vp8_v4l2m2m_decoder_deps="v4l2_m2m vp8_v4l2_m2m"
2859 vp8_v4l2m2m_encoder_deps="v4l2_m2m vp8_v4l2_m2m"
2860 vp9_cuvid_decoder_deps="cuvid"
2861 vp9_mediacodec_decoder_deps="mediacodec"
2862 vp9_rkmpp_decoder_deps="rkmpp"
2863 vp9_vaapi_encoder_deps="VAEncPictureParameterBufferVP9"
2864 vp9_vaapi_encoder_select="vaapi_encode"
2865 vp9_v4l2m2m_decoder_deps="v4l2_m2m vp9_v4l2_m2m"
2866 wmv3_crystalhd_decoder_select="crystalhd"
2867
2868 # parsers
2869 aac_parser_select="adts_header"
2870 h264_parser_select="golomb h264dsp h264parse"
2871 hevc_parser_select="hevcparse"
2872 mpegaudio_parser_select="mpegaudioheader"
2873 mpegvideo_parser_select="mpegvideo"
2874 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
2875 vc1_parser_select="vc1dsp"
2876
2877 # bitstream_filters
2878 aac_adtstoasc_bsf_select="adts_header"
2879 h264_metadata_bsf_select="cbs_h264"
2880 h264_redundant_pps_bsf_select="cbs_h264"
2881 hevc_metadata_bsf_select="cbs_h265"
2882 mjpeg2jpeg_bsf_select="jpegtables"
2883 mpeg2_metadata_bsf_select="cbs_mpeg2"
2884 trace_headers_bsf_select="cbs_h264 cbs_h265 cbs_mpeg2"
2885
2886 # external libraries
2887 aac_at_decoder_deps="audiotoolbox"
2888 ac3_at_decoder_deps="audiotoolbox"
2889 ac3_at_decoder_select="ac3_parser"
2890 adpcm_ima_qt_at_decoder_deps="audiotoolbox"
2891 alac_at_decoder_deps="audiotoolbox"
2892 amr_nb_at_decoder_deps="audiotoolbox"
2893 avisynth_deps_any="libdl LoadLibrary"
2894 avisynth_demuxer_deps="avisynth"
2895 avisynth_demuxer_select="riffdec"
2896 eac3_at_decoder_deps="audiotoolbox"
2897 eac3_at_decoder_select="ac3_parser"
2898 gsm_ms_at_decoder_deps="audiotoolbox"
2899 ilbc_at_decoder_deps="audiotoolbox"
2900 mp1_at_decoder_deps="audiotoolbox"
2901 mp2_at_decoder_deps="audiotoolbox"
2902 mp3_at_decoder_deps="audiotoolbox"
2903 mp1_at_decoder_select="mpegaudioheader"
2904 mp2_at_decoder_select="mpegaudioheader"
2905 mp3_at_decoder_select="mpegaudioheader"
2906 pcm_alaw_at_decoder_deps="audiotoolbox"
2907 pcm_mulaw_at_decoder_deps="audiotoolbox"
2908 qdmc_at_decoder_deps="audiotoolbox"
2909 qdm2_at_decoder_deps="audiotoolbox"
2910 aac_at_encoder_deps="audiotoolbox"
2911 aac_at_encoder_select="audio_frame_queue"
2912 alac_at_encoder_deps="audiotoolbox"
2913 alac_at_encoder_select="audio_frame_queue"
2914 ilbc_at_encoder_deps="audiotoolbox"
2915 ilbc_at_encoder_select="audio_frame_queue"
2916 pcm_alaw_at_encoder_deps="audiotoolbox"
2917 pcm_alaw_at_encoder_select="audio_frame_queue"
2918 pcm_mulaw_at_encoder_deps="audiotoolbox"
2919 pcm_mulaw_at_encoder_select="audio_frame_queue"
2920 chromaprint_muxer_deps="chromaprint"
2921 h264_videotoolbox_encoder_deps="pthreads"
2922 h264_videotoolbox_encoder_select="videotoolbox_encoder"
2923 hevc_videotoolbox_encoder_deps="pthreads"
2924 hevc_videotoolbox_encoder_select="videotoolbox_encoder"
2925 libcelt_decoder_deps="libcelt"
2926 libfdk_aac_decoder_deps="libfdk_aac"
2927 libfdk_aac_encoder_deps="libfdk_aac"
2928 libfdk_aac_encoder_select="audio_frame_queue"
2929 libgme_demuxer_deps="libgme"
2930 libgsm_decoder_deps="libgsm"
2931 libgsm_encoder_deps="libgsm"
2932 libgsm_ms_decoder_deps="libgsm"
2933 libgsm_ms_encoder_deps="libgsm"
2934 libilbc_decoder_deps="libilbc"
2935 libilbc_encoder_deps="libilbc"
2936 libkvazaar_encoder_deps="libkvazaar"
2937 libmodplug_demuxer_deps="libmodplug"
2938 libmp3lame_encoder_deps="libmp3lame"
2939 libmp3lame_encoder_select="audio_frame_queue mpegaudioheader"
2940 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2941 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2942 libopencore_amrnb_encoder_select="audio_frame_queue"
2943 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2944 libopenh264_decoder_deps="libopenh264"
2945 libopenh264_decoder_select="h264_mp4toannexb_bsf"
2946 libopenh264_encoder_deps="libopenh264"
2947 libopenjpeg_decoder_deps="libopenjpeg"
2948 libopenjpeg_encoder_deps="libopenjpeg"
2949 libopenmpt_demuxer_deps="libopenmpt"
2950 libopus_decoder_deps="libopus"
2951 libopus_encoder_deps="libopus"
2952 libopus_encoder_select="audio_frame_queue"
2953 librsvg_decoder_deps="librsvg"
2954 libshine_encoder_deps="libshine"
2955 libshine_encoder_select="audio_frame_queue"
2956 libspeex_decoder_deps="libspeex"
2957 libspeex_encoder_deps="libspeex"
2958 libspeex_encoder_select="audio_frame_queue"
2959 libtheora_encoder_deps="libtheora"
2960 libtwolame_encoder_deps="libtwolame"
2961 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2962 libvorbis_decoder_deps="libvorbis"
2963 libvorbis_encoder_deps="libvorbis libvorbisenc"
2964 libvorbis_encoder_select="audio_frame_queue"
2965 libvpx_vp8_decoder_deps="libvpx"
2966 libvpx_vp8_encoder_deps="libvpx"
2967 libvpx_vp9_decoder_deps="libvpx"
2968 libvpx_vp9_encoder_deps="libvpx"
2969 libwavpack_encoder_deps="libwavpack"
2970 libwavpack_encoder_select="audio_frame_queue"
2971 libwebp_encoder_deps="libwebp"
2972 libwebp_anim_encoder_deps="libwebp"
2973 libx262_encoder_deps="libx262"
2974 libx264_encoder_deps="libx264"
2975 libx264rgb_encoder_deps="libx264 x264_csp_bgr"
2976 libx264rgb_encoder_select="libx264_encoder"
2977 libx265_encoder_deps="libx265"
2978 libxavs_encoder_deps="libxavs"
2979 libxvid_encoder_deps="libxvid"
2980 libzvbi_teletext_decoder_deps="libzvbi"
2981 videotoolbox_suggest="coreservices"
2982 videotoolbox_deps="corefoundation coremedia corevideo"
2983 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
2984
2985 # demuxers / muxers
2986 ac3_demuxer_select="ac3_parser"
2987 aiff_muxer_select="iso_media"
2988 asf_demuxer_select="riffdec"
2989 asf_o_demuxer_select="riffdec"
2990 asf_muxer_select="riffenc"
2991 asf_stream_muxer_select="asf_muxer"
2992 avi_demuxer_select="iso_media riffdec exif"
2993 avi_muxer_select="riffenc"
2994 caf_demuxer_select="iso_media riffdec"
2995 caf_muxer_select="iso_media"
2996 dash_muxer_select="mp4_muxer"
2997 dash_demuxer_deps="libxml2"
2998 dirac_demuxer_select="dirac_parser"
2999 dts_demuxer_select="dca_parser"
3000 dtshd_demuxer_select="dca_parser"
3001 dv_demuxer_select="dvprofile"
3002 dv_muxer_select="dvprofile"
3003 dxa_demuxer_select="riffdec"
3004 eac3_demuxer_select="ac3_parser"
3005 f4v_muxer_select="mov_muxer"
3006 fifo_muxer_deps="threads"
3007 flac_demuxer_select="flac_parser"
3008 hds_muxer_select="flv_muxer"
3009 hls_muxer_select="mpegts_muxer"
3010 hls_muxer_suggest="gcrypt openssl"
3011 image2_alias_pix_demuxer_select="image2_demuxer"
3012 image2_brender_pix_demuxer_select="image2_demuxer"
3013 ipod_muxer_select="mov_muxer"
3014 ismv_muxer_select="mov_muxer"
3015 matroska_audio_muxer_select="matroska_muxer"
3016 matroska_demuxer_select="iso_media riffdec"
3017 matroska_demuxer_suggest="bzlib lzo zlib"
3018 matroska_muxer_select="iso_media riffenc"
3019 mmf_muxer_select="riffenc"
3020 mov_demuxer_select="iso_media riffdec"
3021 mov_demuxer_suggest="zlib"
3022 mov_muxer_select="iso_media riffenc rtpenc_chain"
3023 mp3_demuxer_select="mpegaudio_parser"
3024 mp3_muxer_select="mpegaudioheader"
3025 mp4_muxer_select="mov_muxer"
3026 mpegts_demuxer_select="iso_media"
3027 mpegts_muxer_select="adts_muxer latm_muxer"
3028 mpegtsraw_demuxer_select="mpegts_demuxer"
3029 mxf_d10_muxer_select="mxf_muxer"
3030 mxf_opatom_muxer_select="mxf_muxer"
3031 nut_muxer_select="riffenc"
3032 nuv_demuxer_select="riffdec"
3033 oga_muxer_select="ogg_muxer"
3034 ogg_demuxer_select="dirac_parse"
3035 ogv_muxer_select="ogg_muxer"
3036 opus_muxer_select="ogg_muxer"
3037 psp_muxer_select="mov_muxer"
3038 rtp_demuxer_select="sdp_demuxer"
3039 rtp_muxer_select="golomb"
3040 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
3041 rtsp_demuxer_select="http_protocol rtpdec"
3042 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
3043 sap_demuxer_select="sdp_demuxer"
3044 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
3045 sdp_demuxer_select="rtpdec"
3046 smoothstreaming_muxer_select="ismv_muxer"
3047 spdif_demuxer_select="adts_header"
3048 spdif_muxer_select="adts_header"
3049 spx_muxer_select="ogg_muxer"
3050 swf_demuxer_suggest="zlib"
3051 tak_demuxer_select="tak_parser"
3052 tg2_muxer_select="mov_muxer"
3053 tgp_muxer_select="mov_muxer"
3054 vobsub_demuxer_select="mpegps_demuxer"
3055 w64_demuxer_select="wav_demuxer"
3056 w64_muxer_select="wav_muxer"
3057 wav_demuxer_select="riffdec"
3058 wav_muxer_select="riffenc"
3059 webm_muxer_select="iso_media riffenc"
3060 webm_dash_manifest_demuxer_select="matroska_demuxer"
3061 wtv_demuxer_select="mpegts_demuxer riffdec"
3062 wtv_muxer_select="mpegts_muxer riffenc"
3063 xmv_demuxer_select="riffdec"
3064 xwma_demuxer_select="riffdec"
3065
3066 # indevs / outdevs
3067 alsa_indev_deps="alsa"
3068 alsa_outdev_deps="alsa"
3069 avfoundation_indev_deps="avfoundation corevideo coremedia pthreads"
3070 avfoundation_indev_suggest="coregraphics applicationservices"
3071 avfoundation_indev_extralibs="-framework Foundation"
3072 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
3073 caca_outdev_deps="libcaca"
3074 decklink_deps_any="libdl LoadLibrary"
3075 decklink_indev_deps="decklink threads"
3076 decklink_indev_extralibs="-lstdc++"
3077 decklink_outdev_deps="decklink threads"
3078 decklink_outdev_extralibs="-lstdc++"
3079 libndi_newtek_indev_deps="libndi_newtek"
3080 libndi_newtek_indev_extralibs="-lndi"
3081 libndi_newtek_outdev_deps="libndi_newtek"
3082 libndi_newtek_outdev_extralibs="-lndi"
3083 dshow_indev_deps="IBaseFilter"
3084 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
3085 fbdev_indev_deps="linux_fb_h"
3086 fbdev_outdev_deps="linux_fb_h"
3087 gdigrab_indev_deps="CreateDIBSection"
3088 gdigrab_indev_extralibs="-lgdi32"
3089 gdigrab_indev_select="bmp_decoder"
3090 iec61883_indev_deps="libiec61883"
3091 jack_indev_deps="libjack"
3092 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
3093 kmsgrab_indev_deps="libdrm"
3094 lavfi_indev_deps="avfilter"
3095 libcdio_indev_deps="libcdio"
3096 libdc1394_indev_deps="libdc1394"
3097 openal_indev_deps="openal"
3098 opengl_outdev_deps="opengl"
3099 oss_indev_deps_any="sys_soundcard_h"
3100 oss_outdev_deps_any="sys_soundcard_h"
3101 pulse_indev_deps="libpulse"
3102 pulse_outdev_deps="libpulse"
3103 sdl2_outdev_deps="sdl2"
3104 sndio_indev_deps="sndio"
3105 sndio_outdev_deps="sndio"
3106 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
3107 v4l2_indev_suggest="libv4l2"
3108 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
3109 v4l2_outdev_suggest="libv4l2"
3110 vfwcap_indev_deps="vfw32 vfwcap_defines"
3111 xcbgrab_indev_deps="libxcb"
3112 xcbgrab_indev_suggest="libxcb_shm libxcb_shape libxcb_xfixes"
3113 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
3114 xv_outdev_extralibs="-lXv -lX11 -lXext"
3115
3116 # protocols
3117 async_protocol_deps="threads"
3118 bluray_protocol_deps="libbluray"
3119 ffrtmpcrypt_protocol_conflict="librtmp_protocol"
3120 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
3121 ffrtmpcrypt_protocol_select="tcp_protocol"
3122 ffrtmphttp_protocol_conflict="librtmp_protocol"
3123 ffrtmphttp_protocol_select="http_protocol"
3124 ftp_protocol_select="tcp_protocol"
3125 gopher_protocol_select="network"
3126 http_protocol_select="tcp_protocol"
3127 http_protocol_suggest="zlib"
3128 httpproxy_protocol_select="tcp_protocol"
3129 httpproxy_protocol_suggest="zlib"
3130 https_protocol_select="tls_protocol"
3131 https_protocol_suggest="zlib"
3132 icecast_protocol_select="http_protocol"
3133 librtmp_protocol_deps="librtmp"
3134 librtmpe_protocol_deps="librtmp"
3135 librtmps_protocol_deps="librtmp"
3136 librtmpt_protocol_deps="librtmp"
3137 librtmpte_protocol_deps="librtmp"
3138 libsmbclient_protocol_deps="libsmbclient gplv3"
3139 libssh_protocol_deps="libssh"
3140 mmsh_protocol_select="http_protocol"
3141 mmst_protocol_select="network"
3142 rtmp_protocol_conflict="librtmp_protocol"
3143 rtmp_protocol_select="tcp_protocol"
3144 rtmp_protocol_suggest="zlib"
3145 rtmpe_protocol_select="ffrtmpcrypt_protocol"
3146 rtmpe_protocol_suggest="zlib"
3147 rtmps_protocol_conflict="librtmp_protocol"
3148 rtmps_protocol_select="tls_protocol"
3149 rtmps_protocol_suggest="zlib"
3150 rtmpt_protocol_select="ffrtmphttp_protocol"
3151 rtmpt_protocol_suggest="zlib"
3152 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
3153 rtmpte_protocol_suggest="zlib"
3154 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
3155 rtmpts_protocol_suggest="zlib"
3156 rtp_protocol_select="udp_protocol"
3157 schannel_conflict="openssl gnutls"
3158 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
3159 sctp_protocol_select="network"
3160 securetransport_conflict="openssl gnutls"
3161 srtp_protocol_select="rtp_protocol srtp"
3162 tcp_protocol_select="network"
3163 tls_protocol_deps_any="gnutls openssl schannel securetransport"
3164 tls_protocol_select="tcp_protocol"
3165 udp_protocol_select="network"
3166 udplite_protocol_select="network"
3167 unix_protocol_deps="sys_un_h"
3168 unix_protocol_select="network"
3169
3170 # filters
3171 afftfilt_filter_deps="avcodec"
3172 afftfilt_filter_select="fft"
3173 afir_filter_deps="avcodec"
3174 afir_filter_select="fft"
3175 amovie_filter_deps="avcodec avformat"
3176 aresample_filter_deps="swresample"
3177 ass_filter_deps="libass"
3178 atempo_filter_deps="avcodec"
3179 atempo_filter_select="rdft"
3180 azmq_filter_deps="libzmq"
3181 blackframe_filter_deps="gpl"
3182 boxblur_filter_deps="gpl"
3183 bs2b_filter_deps="libbs2b"
3184 colormatrix_filter_deps="gpl"
3185 coreimage_filter_deps="coreimage appkit"
3186 coreimage_filter_extralibs="-framework OpenGL"
3187 coreimagesrc_filter_deps="coreimage appkit"
3188 coreimagesrc_filter_extralibs="-framework OpenGL"
3189 cover_rect_filter_deps="avcodec avformat gpl"
3190 cropdetect_filter_deps="gpl"
3191 deinterlace_qsv_filter_deps="libmfx"
3192 deinterlace_vaapi_filter_deps="vaapi"
3193 delogo_filter_deps="gpl"
3194 deshake_filter_select="pixelutils"
3195 drawtext_filter_deps="libfreetype"
3196 drawtext_filter_suggest="libfontconfig libfribidi"
3197 elbg_filter_deps="avcodec"
3198 eq_filter_deps="gpl"
3199 fftfilt_filter_deps="avcodec"
3200 fftfilt_filter_select="rdft"
3201 find_rect_filter_deps="avcodec avformat gpl"
3202 firequalizer_filter_deps="avcodec"
3203 firequalizer_filter_select="rdft"
3204 flite_filter_deps="libflite"
3205 framerate_filter_select="pixelutils"
3206 frei0r_filter_deps="frei0r libdl"
3207 frei0r_src_filter_deps="frei0r libdl"
3208 fspp_filter_deps="gpl"
3209 geq_filter_deps="gpl"
3210 histeq_filter_deps="gpl"
3211 hqdn3d_filter_deps="gpl"
3212 interlace_filter_deps="gpl"
3213 kerndeint_filter_deps="gpl"
3214 ladspa_filter_deps="ladspa libdl"
3215 lv2_filter_deps="lv2"
3216 mcdeint_filter_deps="avcodec gpl"
3217 movie_filter_deps="avcodec avformat"
3218 mpdecimate_filter_deps="gpl"
3219 mpdecimate_filter_select="pixelutils"
3220 mptestsrc_filter_deps="gpl"
3221 negate_filter_deps="lut_filter"
3222 nnedi_filter_deps="gpl"
3223 ocr_filter_deps="libtesseract"
3224 ocv_filter_deps="libopencv"
3225 overlay_opencl_filter_deps="opencl"
3226 overlay_qsv_filter_deps="libmfx"
3227 overlay_qsv_filter_select="qsvvpp"
3228 owdenoise_filter_deps="gpl"
3229 pan_filter_deps="swresample"
3230 perspective_filter_deps="gpl"
3231 phase_filter_deps="gpl"
3232 pp7_filter_deps="gpl"
3233 pp_filter_deps="gpl postproc"
3234 pullup_filter_deps="gpl"
3235 removelogo_filter_deps="avcodec avformat swscale"
3236 repeatfields_filter_deps="gpl"
3237 resample_filter_deps="avresample"
3238 rubberband_filter_deps="librubberband"
3239 sab_filter_deps="gpl swscale"
3240 scale2ref_filter_deps="swscale"
3241 scale_filter_deps="swscale"
3242 scale_qsv_filter_deps="libmfx"
3243 select_filter_select="pixelutils"
3244 showcqt_filter_deps="avcodec avformat swscale"
3245 showcqt_filter_suggest="libfontconfig libfreetype"
3246 showcqt_filter_select="fft"
3247 showfreqs_filter_deps="avcodec"
3248 showfreqs_filter_select="fft"
3249 showspectrum_filter_deps="avcodec"
3250 showspectrum_filter_select="fft"
3251 showspectrumpic_filter_deps="avcodec"
3252 showspectrumpic_filter_select="fft"
3253 signature_filter_deps="gpl avcodec avformat"
3254 smartblur_filter_deps="gpl swscale"
3255 sofalizer_filter_deps="libmysofa avcodec"
3256 sofalizer_filter_select="fft"
3257 spectrumsynth_filter_deps="avcodec"
3258 spectrumsynth_filter_select="fft"
3259 spp_filter_deps="gpl avcodec"
3260 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3261 stereo3d_filter_deps="gpl"
3262 subtitles_filter_deps="avformat avcodec libass"
3263 super2xsai_filter_deps="gpl"
3264 pixfmts_super2xsai_test_deps="super2xsai_filter"
3265 tinterlace_filter_deps="gpl"
3266 tinterlace_merge_test_deps="tinterlace_filter"
3267 tinterlace_pad_test_deps="tinterlace_filter"
3268 tonemap_filter_deps="const_nan"
3269 unsharp_opencl_filter_deps="opencl"
3270 uspp_filter_deps="gpl avcodec"
3271 vaguedenoiser_filter_deps="gpl"
3272 vidstabdetect_filter_deps="libvidstab"
3273 vidstabtransform_filter_deps="libvidstab"
3274 libvmaf_filter_deps="libvmaf"
3275 zmq_filter_deps="libzmq"
3276 zoompan_filter_deps="swscale"
3277 zscale_filter_deps="libzimg const_nan"
3278 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3279 vpp_qsv_filter_deps="libmfx"
3280 vpp_qsv_filter_select="qsvvpp"
3281
3282 # examples
3283 avio_dir_cmd_deps="avformat avutil"
3284 avio_reading_deps="avformat avcodec avutil"
3285 decode_audio_example_deps="avcodec avutil"
3286 decode_video_example_deps="avcodec avutil"
3287 demuxing_decoding_example_deps="avcodec avformat avutil"
3288 encode_audio_example_deps="avcodec avutil"
3289 encode_video_example_deps="avcodec avutil"
3290 extract_mvs_example_deps="avcodec avformat avutil"
3291 filter_audio_example_deps="avfilter avutil"
3292 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3293 filtering_video_example_deps="avfilter avcodec avformat avutil"
3294 http_multiclient_example_deps="avformat avutil fork"
3295 hw_decode_example_deps="avcodec avformat avutil"
3296 metadata_example_deps="avformat avutil"
3297 muxing_example_deps="avcodec avformat avutil swscale"
3298 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
3299 remuxing_example_deps="avcodec avformat avutil"
3300 resampling_audio_example_deps="avutil swresample"
3301 scaling_video_example_deps="avutil swscale"
3302 transcode_aac_example_deps="avcodec avformat swresample"
3303 transcoding_example_deps="avfilter avcodec avformat avutil"
3304 vaapi_encode_example_deps="avcodec avutil"
3305
3306 # EXTRALIBS_LIST
3307 cpu_init_extralibs="pthreads_extralibs"
3308 cws2fws_extralibs="zlib_extralibs"
3309
3310 # libraries, in linking order
3311 avcodec_deps="avutil"
3312 avcodec_suggest="libm"
3313 avcodec_select="null_bsf"
3314 avdevice_deps="avformat avcodec avutil"
3315 avdevice_suggest="libm"
3316 avfilter_deps="avutil"
3317 avfilter_suggest="libm"
3318 avformat_deps="avcodec avutil"
3319 avformat_suggest="libm network zlib"
3320 avresample_deps="avutil"
3321 avresample_suggest="libm"
3322 avutil_suggest="clock_gettime cuda libm libdrm libmfx opencl user32 vaapi videotoolbox corefoundation corevideo coremedia wincrypt"
3323 postproc_deps="avutil gpl"
3324 postproc_suggest="libm"
3325 swresample_deps="avutil"
3326 swresample_suggest="libm libsoxr"
3327 swscale_deps="avutil"
3328 swscale_suggest="libm"
3329
3330 avcodec_extralibs="pthreads_extralibs iconv_extralibs"
3331 avfilter_extralibs="pthreads_extralibs"
3332 avutil_extralibs="d3d11va_extralibs nanosleep_extralibs pthreads_extralibs vaapi_drm_extralibs vaapi_x11_extralibs vdpau_x11_extralibs"
3333
3334 # programs
3335 ffmpeg_deps="avcodec avfilter avformat swresample"
3336 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3337                null_filter
3338                trim_filter"
3339 ffmpeg_suggest="ole32 psapi shell32"
3340 ffplay_deps="avcodec avformat swscale swresample sdl2"
3341 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3342 ffplay_suggest="shell32"
3343 ffprobe_deps="avcodec avformat"
3344 ffprobe_suggest="shell32"
3345 ffserver_deps="avformat fork sarestart"
3346 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
3347
3348 # documentation
3349 podpages_deps="perl"
3350 manpages_deps="perl pod2man"
3351 htmlpages_deps="perl"
3352 htmlpages_deps_any="makeinfo_html texi2html"
3353 txtpages_deps="perl makeinfo"
3354 doc_deps_any="manpages htmlpages podpages txtpages"
3355
3356 # default parameters
3357
3358 logfile="ffbuild/config.log"
3359
3360 # installation paths
3361 prefix_default="/usr/local"
3362 bindir_default='${prefix}/bin'
3363 datadir_default='${prefix}/share/ffmpeg'
3364 docdir_default='${prefix}/share/doc/ffmpeg'
3365 incdir_default='${prefix}/include'
3366 libdir_default='${prefix}/lib'
3367 mandir_default='${prefix}/share/man'
3368
3369 # toolchain
3370 ar_default="ar"
3371 cc_default="gcc"
3372 cxx_default="g++"
3373 host_cc_default="gcc"
3374 doxygen_default="doxygen"
3375 install="install"
3376 ln_s_default="ln -s -f"
3377 nm_default="nm -g"
3378 pkg_config_default=pkg-config
3379 ranlib_default="ranlib"
3380 strip_default="strip"
3381 version_script='--version-script'
3382 objformat="elf32"
3383 x86asmexe_default="nasm"
3384 windres_default="windres"
3385 nvcc_default="nvcc"
3386 nvccflags_default="-gencode arch=compute_30,code=sm_30 -O2"
3387 striptype="direct"
3388
3389 # OS
3390 target_os_default=$(tolower $(uname -s))
3391 host_os=$target_os_default
3392
3393 # machine
3394 if test "$target_os_default" = aix; then
3395     arch_default=$(uname -p)
3396     strip_default="strip -X32_64"
3397 else
3398     arch_default=$(uname -m)
3399 fi
3400 cpu="generic"
3401 intrinsics="none"
3402
3403 # configurable options
3404 enable $PROGRAM_LIST
3405 enable $DOCUMENT_LIST
3406 enable $EXAMPLE_LIST
3407 enable $(filter_out avresample $LIBRARY_LIST)
3408 enable stripping
3409
3410 enable asm
3411 enable debug
3412 enable doc
3413 enable faan faandct faanidct
3414 enable optimizations
3415 enable runtime_cpudetect
3416 enable safe_bitstream_reader
3417 enable static
3418 enable swscale_alpha
3419 enable valgrind_backtrace
3420
3421 sws_max_filter_size_default=256
3422 set_default sws_max_filter_size
3423
3424 # internal components are enabled by default
3425 enable $EXTRALIBS_LIST
3426
3427 # Avoid external, non-system, libraries getting enabled by dependency resolution
3428 disable $EXTERNAL_LIBRARY_LIST $HWACCEL_LIBRARY_LIST
3429
3430 # build settings
3431 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3432 LIBPREF="lib"
3433 LIBSUF=".a"
3434 FULLNAME='$(NAME)$(BUILDSUF)'
3435 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3436 SLIBPREF="lib"
3437 SLIBSUF=".so"
3438 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3439 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3440 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3441 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3442 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3443 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3444 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
3445
3446 asflags_filter=echo
3447 cflags_filter=echo
3448 ldflags_filter=echo
3449
3450 AS_C='-c'
3451 AS_O='-o $@'
3452 CC_C='-c'
3453 CC_E='-E -o $@'
3454 CC_O='-o $@'
3455 CXX_C='-c'
3456 CXX_O='-o $@'
3457 OBJCC_C='-c'
3458 OBJCC_E='-E -o $@'
3459 OBJCC_O='-o $@'
3460 X86ASM_O='-o $@'
3461 LD_O='-o $@'
3462 LD_LIB='-l%'
3463 LD_PATH='-L'
3464 HOSTCC_C='-c'
3465 HOSTCC_E='-E -o $@'
3466 HOSTCC_O='-o $@'
3467 HOSTLD_O='-o $@'
3468 NVCC_C='-c'
3469 NVCC_O='-o $@'
3470
3471 host_extralibs='-lm'
3472 host_cflags_filter=echo
3473 host_ldflags_filter=echo
3474
3475 target_path='$(CURDIR)'
3476
3477 # since the object filename is not given with the -MM flag, the compiler
3478 # is only able to print the basename, and we must add the path ourselves
3479 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3480 DEPFLAGS='-MM'
3481
3482 mkdir -p ffbuild
3483
3484 # find source path
3485 if test -f configure; then
3486     source_path=.
3487 else
3488     source_path=$(cd $(dirname "$0"); pwd)
3489     case "$source_path" in
3490         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3491     esac
3492     test -e "$source_path/config.h" &&
3493         die "Out of tree builds are impossible with config.h in source dir."
3494 fi
3495
3496 for v in "$@"; do
3497     r=${v#*=}
3498     l=${v%"$r"}
3499     r=$(sh_quote "$r")
3500     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3501 done
3502
3503 find_things(){
3504     thing=$1
3505     pattern=$2
3506     file=$source_path/$3
3507     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
3508 }
3509
3510 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
3511 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
3512 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
3513 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
3514 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
3515 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
3516 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
3517 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
3518
3519 find_things_extern(){
3520     thing=$1
3521     pattern=$2
3522     file=$source_path/$3
3523     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
3524 }
3525
3526 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3527 HWACCEL_LIST=$(find_things_extern hwaccel AVHWAccel libavcodec/hwaccels.h)
3528 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3529
3530 AVCODEC_COMPONENTS_LIST="
3531     $BSF_LIST
3532     $DECODER_LIST
3533     $ENCODER_LIST
3534     $HWACCEL_LIST
3535     $PARSER_LIST
3536 "
3537
3538 AVDEVICE_COMPONENTS_LIST="
3539     $INDEV_LIST
3540     $OUTDEV_LIST
3541 "
3542
3543 AVFILTER_COMPONENTS_LIST="
3544     $FILTER_LIST
3545 "
3546
3547 AVFORMAT_COMPONENTS_LIST="
3548     $DEMUXER_LIST
3549     $MUXER_LIST
3550     $PROTOCOL_LIST
3551 "
3552
3553 ALL_COMPONENTS="
3554     $AVCODEC_COMPONENTS_LIST
3555     $AVDEVICE_COMPONENTS_LIST
3556     $AVFILTER_COMPONENTS_LIST
3557     $AVFORMAT_COMPONENTS_LIST
3558 "
3559
3560 for n in $COMPONENT_LIST; do
3561     v=$(toupper ${n%s})_LIST
3562     eval enable \$$v
3563     eval ${n}_if_any="\$$v"
3564 done
3565
3566 enable $ARCH_EXT_LIST
3567
3568 die_unknown(){
3569     echo "Unknown option \"$1\"."
3570     echo "See $0 --help for available options."
3571     exit 1
3572 }
3573
3574 print_in_columns() {
3575     cols=$(expr $ncols / 24)
3576     cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
3577 }
3578
3579 show_list() {
3580     suffix=_$1
3581     shift
3582     echo $* | sed s/$suffix//g | print_in_columns
3583     exit 0
3584 }
3585
3586 rand_list(){
3587     IFS=', '
3588     set -- $*
3589     unset IFS
3590     for thing; do
3591         comp=${thing%:*}
3592         prob=${thing#$comp}
3593         prob=${prob#:}
3594         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3595         echo "prob ${prob:-0.5}"
3596         printf '%s\n' $comp
3597     done
3598 }
3599
3600 do_random(){
3601     action=$1
3602     shift
3603     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3604     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3605 }
3606
3607 for opt do
3608     optval="${opt#*=}"
3609     case "$opt" in
3610         --extra-ldflags=*)
3611             add_ldflags $optval
3612         ;;
3613         --extra-ldexeflags=*)
3614             add_ldexeflags $optval
3615         ;;
3616         --extra-ldsoflags=*)
3617             add_ldsoflags $optval
3618         ;;
3619         --extra-ldlibflags=*)
3620             warn "The --extra-ldlibflags option is only provided for compatibility and will be\n"\
3621                  "removed in the future. Use --extra-ldsoflags instead."
3622             add_ldsoflags $optval
3623         ;;
3624         --extra-libs=*)
3625             add_extralibs $optval
3626         ;;
3627         --disable-devices)
3628             disable $INDEV_LIST $OUTDEV_LIST
3629         ;;
3630         --enable-debug=*)
3631             debuglevel="$optval"
3632         ;;
3633         --disable-programs)
3634             disable $PROGRAM_LIST
3635         ;;
3636         --disable-everything)
3637             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3638         ;;
3639         --disable-all)
3640             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3641             disable $LIBRARY_LIST $PROGRAM_LIST doc
3642             enable avutil
3643         ;;
3644         --enable-random|--disable-random)
3645             action=${opt%%-random}
3646             do_random ${action#--} $COMPONENT_LIST
3647         ;;
3648         --enable-random=*|--disable-random=*)
3649             action=${opt%%-random=*}
3650             do_random ${action#--} $optval
3651         ;;
3652         --enable-sdl)
3653             enable sdl2
3654         ;;
3655         --enable-*=*|--disable-*=*)
3656             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3657             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3658             eval list=\$$(toupper $thing)_LIST
3659             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3660             list=$(filter "$name" $list)
3661             [ "$list" = "" ] && warn "Option $opt did not match anything"
3662             $action $list
3663         ;;
3664         --enable-yasm|--disable-yasm)
3665             warn "The ${opt} option is only provided for compatibility and will be\n"\
3666                  "removed in the future. Use --enable-x86asm / --disable-x86asm instead."
3667             test $opt = --enable-yasm && x86asm=yes || x86asm=no
3668         ;;
3669         --yasmexe=*)
3670             warn "The --yasmexe option is only provided for compatibility and will be\n"\
3671                  "removed in the future. Use --x86asmexe instead."
3672             x86asmexe="$optval"
3673         ;;
3674         --enable-?*|--disable-?*)
3675             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3676             if is_in $option $COMPONENT_LIST; then
3677                 test $action = disable && action=unset
3678                 eval $action \$$(toupper ${option%s})_LIST
3679             elif is_in $option $CMDLINE_SELECT; then
3680                 $action $option
3681             else
3682                 die_unknown $opt
3683             fi
3684         ;;
3685         --list-*)
3686             NAME="${opt#--list-}"
3687             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3688             NAME=${NAME%s}
3689             eval show_list $NAME \$$(toupper $NAME)_LIST
3690         ;;
3691         --help|-h) show_help
3692         ;;
3693         --quiet|-q) quiet=yes
3694         ;;
3695         --fatal-warnings) enable fatal_warnings
3696         ;;
3697         --libfuzzer=*)
3698             libfuzzer_path="$optval"
3699         ;;
3700         *)
3701             optname="${opt%%=*}"
3702             optname="${optname#--}"
3703             optname=$(echo "$optname" | sed 's/-/_/g')
3704             if is_in $optname $CMDLINE_SET; then
3705                 eval $optname='$optval'
3706             elif is_in $optname $CMDLINE_APPEND; then
3707                 append $optname "$optval"
3708             else
3709                 die_unknown $opt
3710             fi
3711         ;;
3712     esac
3713 done
3714
3715 for e in $env; do
3716     eval "export $e"
3717 done
3718
3719 if disabled autodetect; then
3720
3721     # Unless iconv is explicitely disabled by the user, we still want to probe
3722     # for the iconv from the libc.
3723     disabled iconv || enable libc_iconv
3724
3725     disable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3726     disable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3727 fi
3728 # Mark specifically enabled, but normally autodetected libraries as requested.
3729 for lib in $AUTODETECT_LIBS; do
3730     enabled $lib && request $lib
3731 done
3732 #TODO: switch to $AUTODETECT_LIBS when $THREADS_LIST is supported the same way
3733 enable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3734 enable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3735
3736 disabled logging && logfile=/dev/null
3737
3738 # command line configuration sanity checks
3739
3740 # we need to build at least one lib type
3741 if ! enabled_any static shared; then
3742     cat <<EOF
3743 At least one library type must be built.
3744 Specify --enable-static to build the static libraries or --enable-shared to
3745 build the shared libraries as well. To only build the shared libraries specify
3746 --disable-static in addition to --enable-shared.
3747 EOF
3748     exit 1
3749 fi
3750
3751 die_license_disabled() {
3752     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
3753 }
3754
3755 die_license_disabled_gpl() {
3756     enabled $1 || { enabled $v && die "$v is incompatible with the gpl and --enable-$1 is not specified."; }
3757 }
3758
3759 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3760 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3761
3762 enabled gpl && map "die_license_disabled_gpl nonfree" $EXTERNAL_LIBRARY_NONFREE_LIST
3763 map "die_license_disabled nonfree" $HWACCEL_LIBRARY_NONFREE_LIST
3764
3765 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3766
3767 enabled_all gnutls openssl &&
3768     die "GnuTLS and OpenSSL must not be enabled at the same time."
3769
3770 # Disable all the library-specific components if the library itself
3771 # is disabled, see AVCODEC_LIST and following _LIST variables.
3772
3773 disable_components(){
3774     disabled ${1} && disable $(
3775         eval components="\$$(toupper ${1})_COMPONENTS"
3776         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
3777     )
3778 }
3779
3780 map 'disable_components $v' $LIBRARY_LIST
3781
3782 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
3783 set >> $logfile
3784
3785 test -n "$valgrind" && toolchain="valgrind-memcheck"
3786
3787 enabled ossfuzz && {
3788     add_cflags  -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp -fno-omit-frame-pointer
3789     add_ldflags -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp
3790 }
3791
3792 case "$toolchain" in
3793     *-asan)
3794         cc_default="${toolchain%-asan}"
3795         add_cflags  -fsanitize=address
3796         add_ldflags -fsanitize=address
3797     ;;
3798     *-msan)
3799         cc_default="${toolchain%-msan}"
3800         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
3801         add_ldflags -fsanitize=memory
3802     ;;
3803     *-tsan)
3804         cc_default="${toolchain%-tsan}"
3805         add_cflags  -fsanitize=thread -fPIE
3806         add_ldflags -fsanitize=thread -pie
3807         case "$toolchain" in
3808             gcc-tsan)
3809                 add_cflags  -fPIC
3810                 add_ldflags -fPIC
3811                 ;;
3812         esac
3813     ;;
3814     *-usan)
3815         cc_default="${toolchain%-usan}"
3816         add_cflags  -fsanitize=undefined
3817         add_ldflags -fsanitize=undefined
3818     ;;
3819     valgrind-*)
3820         target_exec_default="valgrind"
3821         case "$toolchain" in
3822             valgrind-massif)
3823                 target_exec_args="--tool=massif --alloc-fn=av_malloc --alloc-fn=av_mallocz --alloc-fn=av_calloc --alloc-fn=av_fast_padded_malloc --alloc-fn=av_fast_malloc --alloc-fn=av_realloc_f --alloc-fn=av_fast_realloc --alloc-fn=av_realloc"
3824                 ;;
3825             valgrind-memcheck)
3826                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3827                 ;;
3828         esac
3829     ;;
3830     msvc)
3831         # Check whether the current MSVC version needs the C99 converter.
3832         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3833         # support enough of C99 to build ffmpeg. Default to the new
3834         # behaviour if the regexp was unable to match anything, since this
3835         # successfully parses the version number of existing supported
3836         # versions that require the converter (MSVC 2010 and 2012).
3837         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3838         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3839             cc_default="cl"
3840             cxx_default="cl"
3841         else
3842             cc_default="c99wrap cl"
3843             cxx_default="c99wrap cl"
3844         fi
3845         ld_default="$source_path/compat/windows/mslink"
3846         nm_default="dumpbin -symbols"
3847         ar_default="lib"
3848         case "$arch" in
3849         aarch64|arm64)
3850             as_default="armasm64"
3851             ;;
3852         arm*)
3853             as_default="armasm"
3854             ;;
3855         esac
3856         target_os_default="win32"
3857         # Use a relative path for TMPDIR. This makes sure all the
3858         # ffconf temp files are written with a relative path, avoiding
3859         # issues with msys/win32 path conversion for MSVC parameters
3860         # such as -Fo<file> or -out:<file>.
3861         TMPDIR=.
3862     ;;
3863     icl)
3864         cc_default="icl"
3865         ld_default="xilink"
3866         nm_default="dumpbin -symbols"
3867         ar_default="xilib"
3868         target_os_default="win32"
3869         TMPDIR=.
3870     ;;
3871     gcov)
3872         add_cflags  -fprofile-arcs -ftest-coverage
3873         add_ldflags -fprofile-arcs -ftest-coverage
3874     ;;
3875     llvm-cov)
3876         add_cflags -fprofile-arcs -ftest-coverage
3877         add_ldflags --coverage
3878     ;;
3879     hardened)
3880         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3881         add_cflags   -fno-strict-overflow -fstack-protector-all
3882         add_ldflags  -Wl,-z,relro -Wl,-z,now
3883         add_cflags   -fPIE
3884         add_ldexeflags -fPIE -pie
3885     ;;
3886     ?*)
3887         die "Unknown toolchain $toolchain"
3888     ;;
3889 esac
3890
3891 if test -n "$cross_prefix"; then
3892     test -n "$arch" && test -n "$target_os" ||
3893         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
3894     enable cross_compile
3895 fi
3896
3897 ar_default="${cross_prefix}${ar_default}"
3898 cc_default="${cross_prefix}${cc_default}"
3899 cxx_default="${cross_prefix}${cxx_default}"
3900 nm_default="${cross_prefix}${nm_default}"
3901 pkg_config_default="${cross_prefix}${pkg_config_default}"
3902 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
3903     ranlib_default="${cross_prefix}${ranlib_default} -D"
3904 else
3905     ranlib_default="${cross_prefix}${ranlib_default}"
3906 fi
3907 strip_default="${cross_prefix}${strip_default}"
3908 windres_default="${cross_prefix}${windres_default}"
3909
3910 sysinclude_default="${sysroot}/usr/include"
3911
3912 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3913     target_exec target_os x86asmexe nvcc
3914 enabled cross_compile || host_cc_default=$cc
3915 set_default host_cc
3916
3917 pkg_config_fail_message=""
3918 if ! $pkg_config --version >/dev/null 2>&1; then
3919     warn "$pkg_config not found, library detection may fail."
3920     pkg_config=false
3921 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
3922     pkg_config_fail_message="
3923 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
3924 fi
3925
3926 if test $doxygen != $doxygen_default && \
3927   ! $doxygen --version >/dev/null 2>&1; then
3928     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3929 fi
3930
3931 exesuf() {
3932     case $1 in
3933         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3934     esac
3935 }
3936
3937 EXESUF=$(exesuf $target_os)
3938 HOSTEXESUF=$(exesuf $host_os)
3939
3940 # set temporary file name
3941 : ${TMPDIR:=$TEMPDIR}
3942 : ${TMPDIR:=$TMP}
3943 : ${TMPDIR:=/tmp}
3944
3945 if [ -n "$tempprefix" ] ; then
3946     mktemp(){
3947         tmpname="$tempprefix.${HOSTNAME}.${UID}"
3948         echo "$tmpname"
3949         mkdir "$tmpname"
3950     }
3951 elif ! check_cmd mktemp -u XXXXXX; then
3952     # simple replacement for missing mktemp
3953     # NOT SAFE FOR GENERAL USE
3954     mktemp(){
3955         tmpname="${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3956         echo "$tmpname"
3957         mkdir "$tmpname"
3958     }
3959 fi
3960
3961 FFTMPDIR=$(mktemp -d "${TMPDIR}/ffconf.XXXXXXXX" 2> /dev/null) ||
3962     die "Unable to create temporary directory in $TMPDIR."
3963
3964 tmpfile(){
3965     tmp="${FFTMPDIR}/test"$2
3966     (set -C; exec > $tmp) 2> /dev/null ||
3967         die "Unable to create temporary file in $FFTMPDIR."
3968     eval $1=$tmp
3969 }
3970
3971 trap 'rm -rf -- "$FFTMPDIR"' EXIT
3972 trap 'exit 2' INT
3973
3974 tmpfile TMPASM .asm
3975 tmpfile TMPC   .c
3976 tmpfile TMPCPP .cpp
3977 tmpfile TMPE   $EXESUF
3978 tmpfile TMPH   .h
3979 tmpfile TMPM   .m
3980 tmpfile TMPO   .o
3981 tmpfile TMPS   .S
3982 tmpfile TMPSH  .sh
3983 tmpfile TMPV   .ver
3984
3985 unset -f mktemp
3986
3987 chmod +x $TMPE
3988
3989 # make sure we can execute files in $TMPDIR
3990 cat > $TMPSH 2>> $logfile <<EOF
3991 #! /bin/sh
3992 EOF
3993 chmod +x $TMPSH >> $logfile 2>&1
3994 if ! $TMPSH >> $logfile 2>&1; then
3995     cat <<EOF
3996 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3997 variable to another directory and make sure that it is not mounted noexec.
3998 EOF
3999     die "Sanity test failed."
4000 fi
4001
4002 armasm_flags(){
4003     for flag; do
4004         case $flag in
4005             # Filter out MSVC cl.exe options from cflags that shouldn't
4006             # be passed to gas-preprocessor
4007             -M[TD]*)                                            ;;
4008             *)                  echo $flag                      ;;
4009         esac
4010    done
4011 }
4012
4013 cparser_flags(){
4014     for flag; do
4015         case $flag in
4016             -Wno-switch)             echo -Wno-switch-enum ;;
4017             -Wno-format-zero-length) ;;
4018             -Wdisabled-optimization) ;;
4019             -Wno-pointer-sign)       echo -Wno-other ;;
4020             *)                       echo $flag ;;
4021         esac
4022     done
4023 }
4024
4025 msvc_common_flags(){
4026     for flag; do
4027         case $flag in
4028             # In addition to specifying certain flags under the compiler
4029             # specific filters, they must be specified here as well or else the
4030             # generic catch all at the bottom will print the original flag.
4031             -Wall)                ;;
4032             -Wextra)              ;;
4033             -std=c99)             ;;
4034             # Common flags
4035             -fomit-frame-pointer) ;;
4036             -g)                   echo -Z7 ;;
4037             -fno-math-errno)      ;;
4038             -fno-common)          ;;
4039             -fno-signed-zeros)    ;;
4040             -fPIC)                ;;
4041             -mthumb)              ;;
4042             -march=*)             ;;
4043             -lz)                  echo zlib.lib ;;
4044             -lx264)               echo libx264.lib ;;
4045             -lstdc++)             ;;
4046             -l*)                  echo ${flag#-l}.lib ;;
4047             -LARGEADDRESSAWARE)   echo $flag ;;
4048             -L*)                  echo -libpath:${flag#-L} ;;
4049             *)                    echo $flag ;;
4050         esac
4051     done
4052 }
4053
4054 msvc_flags(){
4055     msvc_common_flags "$@"
4056     for flag; do
4057         case $flag in
4058             -Wall)                echo -W3 -wd4018 -wd4146 -wd4244 -wd4305     \
4059                                        -wd4554 ;;
4060             -Wextra)              echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
4061                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
4062                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
4063                                        -wd4307 \
4064                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
4065         esac
4066     done
4067 }
4068
4069 icl_flags(){
4070     msvc_common_flags "$@"
4071     for flag; do
4072         case $flag in
4073             # Despite what Intel's documentation says -Wall, which is supported
4074             # on Windows, does enable remarks so disable them here.
4075             -Wall)                echo $flag -Qdiag-disable:remark ;;
4076             -std=c99)             echo -Qstd=c99 ;;
4077             -flto)                echo -ipo ;;
4078         esac
4079     done
4080 }
4081
4082 icc_flags(){
4083     for flag; do
4084         case $flag in
4085             -flto)                echo -ipo ;;
4086             *)                    echo $flag ;;
4087         esac
4088     done
4089 }
4090
4091 suncc_flags(){
4092     for flag; do
4093         case $flag in
4094             -march=*|-mcpu=*)
4095                 case "${flag#*=}" in
4096                     native)                   echo -xtarget=native       ;;
4097                     v9|niagara)               echo -xarch=sparc          ;;
4098                     ultrasparc)               echo -xarch=sparcvis       ;;
4099                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
4100                     i586|pentium)             echo -xchip=pentium        ;;
4101                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
4102                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
4103                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
4104                     pentium4*)          echo -xtarget=pentium4           ;;
4105                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
4106                     *-sse3)             echo -xarch=sse3                 ;;
4107                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
4108                     bonnell)                   echo -xarch=ssse3         ;;
4109                     corei7|nehalem)            echo -xtarget=nehalem     ;;
4110                     westmere)                  echo -xtarget=westmere    ;;
4111                     silvermont)                echo -xarch=sse4_2        ;;
4112                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
4113                     core-avx*|ivybridge|haswell|broadwell|skylake*|knl)
4114                                                echo -xarch=avx           ;;
4115                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
4116                     btver1)                    echo -xarch=amdsse4a      ;;
4117                     btver2|bdver*|znver*)      echo -xarch=avx           ;;
4118                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
4119                     k8|opteron|athlon64|athlon-fx)
4120                                                echo -xarch=sse2a         ;;
4121                     athlon*)                   echo -xarch=pentium_proa  ;;
4122                 esac
4123                 ;;
4124             -std=c99)             echo -xc99              ;;
4125             -fomit-frame-pointer) echo -xregs=frameptr    ;;
4126             -fPIC)                echo -KPIC -xcode=pic32 ;;
4127             -W*,*)                echo $flag              ;;
4128             -f*-*|-W*|-mimpure-text)                      ;;
4129             -shared)              echo -G                 ;;
4130             *)                    echo $flag              ;;
4131         esac
4132     done
4133 }
4134
4135 probe_cc(){
4136     pfx=$1
4137     _cc=$2
4138     first=$3
4139
4140     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
4141     unset _ld_o _ldflags _ld_lib _ld_path
4142     unset _depflags _DEPCMD _DEPFLAGS
4143     _flags_filter=echo
4144
4145     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
4146         true # no-op to avoid reading stdin in following checks
4147     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
4148         _type=llvm_gcc
4149         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
4150         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
4151         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4152         _cflags_speed='-O3'
4153         _cflags_size='-Os'
4154     elif $_cc -v 2>&1 | grep -qi ^gcc; then
4155         _type=gcc
4156         gcc_version=$($_cc --version | head -n1)
4157         gcc_basever=$($_cc -dumpversion)
4158         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
4159         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
4160         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
4161         case $gcc_basever in
4162             2) ;;
4163             2.*) ;;
4164             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
4165         esac
4166         if [ "$first" = true ]; then
4167             case $gcc_basever in
4168                 4.2*)
4169                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
4170             esac
4171         fi
4172         _cflags_speed='-O3'
4173         _cflags_size='-Os'
4174     elif $_cc --version 2>/dev/null | grep -q ^icc; then
4175         _type=icc
4176         _ident=$($_cc --version | head -n1)
4177         _depflags='-MMD'
4178         _cflags_speed='-O3'
4179         _cflags_size='-Os'
4180         _cflags_noopt='-O1'
4181         _flags_filter=icc_flags
4182     elif $_cc -v 2>&1 | grep -q xlc; then
4183         _type=xlc
4184         _ident=$($_cc -qversion 2>/dev/null | head -n1)
4185         _cflags_speed='-O5'
4186         _cflags_size='-O5 -qcompact'
4187     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
4188         test -d "$sysroot" || die "No valid sysroot specified."
4189         _type=armcc
4190         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
4191         armcc_conf="$PWD/armcc.conf"
4192         $_cc --arm_linux_configure                 \
4193              --arm_linux_config_file="$armcc_conf" \
4194              --configure_sysroot="$sysroot"        \
4195              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
4196              die "Error creating armcc configuration file."
4197         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
4198         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
4199         as_default="${cross_prefix}gcc"
4200         _depflags='-MMD'
4201         _cflags_speed='-O3'
4202         _cflags_size='-Os'
4203     elif $_cc -v 2>&1 | grep -q clang; then
4204         _type=clang
4205         _ident=$($_cc --version 2>/dev/null | head -n1)
4206         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4207         _cflags_speed='-O3'
4208         _cflags_size='-Oz'
4209     elif $_cc -V 2>&1 | grep -q Sun; then
4210         _type=suncc
4211         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
4212         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
4213         _DEPFLAGS='-xM1 -xc99'
4214         _ldflags='-std=c99'
4215         _cflags_speed='-O5'
4216         _cflags_size='-O5 -xspace'
4217         _flags_filter=suncc_flags
4218     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
4219         _type=pathscale
4220         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4221         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4222         _cflags_speed='-O2'
4223         _cflags_size='-Os'
4224         _flags_filter='filter_out -Wdisabled-optimization'
4225     elif $_cc -v 2>&1 | grep -q Open64; then
4226         _type=open64
4227         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4228         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4229         _cflags_speed='-O2'
4230         _cflags_size='-Os'
4231         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
4232     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
4233         _type=armasm
4234         _ident=$($_cc | head -n1)
4235         # 4509: "This form of conditional instruction is deprecated"
4236         _flags="-nologo -ignore 4509"
4237         _flags_filter=armasm_flags
4238     elif $_cc 2>&1 | grep -q Intel; then
4239         _type=icl
4240         _ident=$($_cc 2>&1 | head -n1)
4241         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
4242         # Not only is O3 broken on 13.x+ but it is slower on all previous
4243         # versions (tested) as well.
4244         _cflags_speed="-O2"
4245         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
4246         if $_cc 2>&1 | grep -q Linker; then
4247             _ld_o='-out:$@'
4248         else
4249             _ld_o='-Fe$@'
4250         fi
4251         _cc_o='-Fo$@'
4252         _cc_e='-P'
4253         _flags_filter=icl_flags
4254         _ld_lib='lib%.a'
4255         _ld_path='-libpath:'
4256         # -Qdiag-error to make icl error when seeing certain unknown arguments
4257         _flags='-nologo -Qdiag-error:4044,10157'
4258         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
4259         # with MSVC which enables it by default.
4260         _cflags='-Qms0 -Qvec- -Qsimd- -GS -fp:precise'
4261         disable stripping
4262     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
4263         # lld can emulate multiple different linkers; in ms link.exe mode,
4264         # the -? parameter gives the help output which contains an identifyable
4265         # string, while it gives an error in other modes.
4266         _type=lld-link
4267         # The link.exe mode doesn't have a switch for getting the version,
4268         # but we can force it back to gnu mode and get the version from there.
4269         _ident=$($_cc -flavor gnu --version 2>/dev/null)
4270         _ld_o='-out:$@'
4271         _flags_filter=msvc_flags
4272         _ld_lib='lib%.a'
4273         _ld_path='-libpath:'
4274     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
4275         _type=msvc
4276         _ident=$($_cc 2>&1 | head -n1)
4277         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
4278         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
4279         _cflags_speed="-O2"
4280         _cflags_size="-O1"
4281         _cflags_noopt="-O1"
4282         if $_cc -nologo- 2>&1 | grep -q Linker; then
4283             _ld_o='-out:$@'
4284         else
4285             _ld_o='-Fe$@'
4286         fi
4287         _cc_o='-Fo$@'
4288         _cc_e='-P -Fi$@'
4289         _flags_filter=msvc_flags
4290         _ld_lib='lib%.a'
4291         _ld_path='-libpath:'
4292         _flags='-nologo'
4293         disable stripping
4294     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
4295         _type=cparser
4296         _ident=$($_cc --version | head -n1)
4297         _depflags='-MMD'
4298         _cflags_speed='-O4'
4299         _cflags_size='-O2'
4300         _flags_filter=cparser_flags
4301     fi
4302
4303     eval ${pfx}_type=\$_type
4304     eval ${pfx}_ident=\$_ident
4305 }
4306
4307 set_ccvars(){
4308     eval ${1}_C=\${_cc_c-\${${1}_C}}
4309     eval ${1}_E=\${_cc_e-\${${1}_E}}
4310     eval ${1}_O=\${_cc_o-\${${1}_O}}
4311
4312     if [ -n "$_depflags" ]; then
4313         eval ${1}_DEPFLAGS=\$_depflags
4314     else
4315         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
4316         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
4317         eval DEP${1}FLAGS=\$_flags
4318     fi
4319 }
4320
4321 probe_cc cc "$cc" "true"
4322 cflags_filter=$_flags_filter
4323 cflags_speed=$_cflags_speed
4324 cflags_size=$_cflags_size
4325 cflags_noopt=$_cflags_noopt
4326 add_cflags $_flags $_cflags
4327 cc_ldflags=$_ldflags
4328 set_ccvars CC
4329 set_ccvars CXX
4330
4331 probe_cc hostcc "$host_cc"
4332 host_cflags_filter=$_flags_filter
4333 host_cflags_speed=$_cflags_speed
4334 add_host_cflags  $_flags $_cflags
4335 set_ccvars HOSTCC
4336
4337 test -n "$cc_type" && enable $cc_type ||
4338     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4339
4340 : ${as_default:=$cc}
4341 : ${objcc_default:=$cc}
4342 : ${dep_cc_default:=$cc}
4343 : ${ld_default:=$cc}
4344 : ${host_ld_default:=$host_cc}
4345 set_default ar as objcc dep_cc ld ln_s host_ld windres
4346
4347 probe_cc as "$as"
4348 asflags_filter=$_flags_filter
4349 add_asflags $_flags $_cflags
4350 set_ccvars AS
4351
4352 probe_cc objcc "$objcc"
4353 objcflags_filter=$_flags_filter
4354 add_objcflags $_flags $_cflags
4355 set_ccvars OBJC
4356
4357 probe_cc ld "$ld"
4358 ldflags_filter=$_flags_filter
4359 add_ldflags $_flags $_ldflags
4360 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4361 LD_O=${_ld_o-$LD_O}
4362 LD_LIB=${_ld_lib-$LD_LIB}
4363 LD_PATH=${_ld_path-$LD_PATH}
4364
4365 probe_cc hostld "$host_ld"
4366 host_ldflags_filter=$_flags_filter
4367 add_host_ldflags $_flags $_ldflags
4368 HOSTLD_O=${_ld_o-$HOSTLD_O}
4369
4370 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4371     probe_cc depcc "$dep_cc"
4372     CCDEP=${_DEPCMD:-$DEPCMD}
4373     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4374     DEPCCFLAGS=$_flags
4375 fi
4376
4377 if $ar 2>&1 | grep -q Microsoft; then
4378     arflags="-nologo"
4379     ar_o='-out:$@'
4380 elif $ar 2>&1 | grep -q "\[D\] "; then
4381     arflags="rcD"
4382     ar_o='$@'
4383 else
4384     arflags="rc"
4385     ar_o='$@'
4386 fi
4387
4388 add_cflags $extra_cflags
4389 add_cxxflags $extra_cxxflags
4390 add_objcflags $extra_objcflags
4391 add_asflags $extra_cflags
4392
4393 if test -n "$sysroot"; then
4394     case "$cc_type" in
4395         gcc|llvm_gcc|clang)
4396             add_cppflags --sysroot="$sysroot"
4397             add_ldflags --sysroot="$sysroot"
4398         ;;
4399     esac
4400 fi
4401
4402 if test "$cpu" = host; then
4403     enabled cross_compile &&
4404         die "--cpu=host makes no sense when cross-compiling."
4405
4406     case "$cc_type" in
4407         gcc|llvm_gcc)
4408             check_native(){
4409                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4410                 sed -n "/cc1.*$1=/{
4411                             s/.*$1=\\([^ ]*\\).*/\\1/
4412                             p
4413                             q
4414                         }" $TMPE
4415             }
4416             cpu=$(check_native -march || check_native -mcpu)
4417         ;;
4418         clang)
4419             check_native(){
4420                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4421                 sed -n "/cc1.*-target-cpu /{
4422                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4423                             p
4424                             q
4425                         }" $TMPE
4426             }
4427             cpu=$(check_native -march)
4428         ;;
4429     esac
4430
4431     test "${cpu:-host}" = host &&
4432         die "--cpu=host not supported with compiler $cc"
4433 fi
4434
4435 # Deal with common $arch aliases
4436 case "$arch" in
4437     aarch64|arm64)
4438         arch="aarch64"
4439     ;;
4440     arm*|iPad*|iPhone*)
4441         arch="arm"
4442     ;;
4443     mips*|IP*)
4444         case "$arch" in
4445         *el)
4446             add_cppflags -EL
4447             add_ldflags -EL
4448         ;;
4449         *eb)
4450             add_cppflags -EB
4451             add_ldflags -EB
4452         ;;
4453         esac
4454         arch="mips"
4455     ;;
4456     parisc*|hppa*)
4457         arch="parisc"
4458     ;;
4459     "Power Macintosh"|ppc*|powerpc*)
4460         arch="ppc"
4461     ;;
4462     s390|s390x)
4463         arch="s390"
4464     ;;
4465     sh4|sh)
4466         arch="sh4"
4467     ;;
4468     sun4*|sparc*)
4469         arch="sparc"
4470     ;;
4471     tilegx|tile-gx)
4472         arch="tilegx"
4473     ;;
4474     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4475         arch="x86"
4476     ;;
4477 esac
4478
4479 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4480 enable $arch
4481
4482 # Add processor-specific flags
4483 if enabled aarch64; then
4484
4485     case $cpu in
4486         armv*)
4487             cpuflags="-march=$cpu"
4488         ;;
4489         *)
4490             cpuflags="-mcpu=$cpu"
4491         ;;
4492     esac
4493
4494 elif enabled alpha; then
4495
4496     cpuflags="-mcpu=$cpu"
4497
4498 elif enabled arm; then
4499
4500     check_arm_arch() {
4501         check_cpp_condition stddef.h \
4502             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4503             $cpuflags
4504     }
4505
4506     probe_arm_arch() {
4507         if   check_arm_arch 4;        then echo armv4
4508         elif check_arm_arch 4T;       then echo armv4t
4509         elif check_arm_arch 5;        then echo armv5
4510         elif check_arm_arch 5E;       then echo armv5e
4511         elif check_arm_arch 5T;       then echo armv5t
4512         elif check_arm_arch 5TE;      then echo armv5te
4513         elif check_arm_arch 5TEJ;     then echo armv5te
4514         elif check_arm_arch 6;        then echo armv6
4515         elif check_arm_arch 6J;       then echo armv6j
4516         elif check_arm_arch 6K;       then echo armv6k
4517         elif check_arm_arch 6Z;       then echo armv6z
4518         elif check_arm_arch 6ZK;      then echo armv6zk
4519         elif check_arm_arch 6T2;      then echo armv6t2
4520         elif check_arm_arch 7;        then echo armv7
4521         elif check_arm_arch 7A  7_A;  then echo armv7-a
4522         elif check_arm_arch 7S;       then echo armv7-a
4523         elif check_arm_arch 7R  7_R;  then echo armv7-r
4524         elif check_arm_arch 7M  7_M;  then echo armv7-m
4525         elif check_arm_arch 7EM 7E_M; then echo armv7-m
4526         elif check_arm_arch 8A  8_A;  then echo armv8-a
4527         fi
4528     }
4529
4530     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4531
4532     case $cpu in
4533         armv*)
4534             cpuflags="-march=$cpu"
4535             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4536         ;;
4537         *)
4538             cpuflags="-mcpu=$cpu"
4539             case $cpu in
4540                 cortex-a*)                               subarch=armv7a  ;;
4541                 cortex-r*)                               subarch=armv7r  ;;
4542                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4543                 arm11*)                                  subarch=armv6   ;;
4544                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4545                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4546                 *)                             subarch=$(probe_arm_arch) ;;
4547             esac
4548         ;;
4549     esac
4550
4551     case "$subarch" in
4552         armv5t*)    enable fast_clz                ;;
4553         armv[6-8]*)
4554             enable fast_clz
4555             disabled fast_unaligned || enable fast_unaligned
4556             ;;
4557     esac
4558
4559 elif enabled avr32; then
4560
4561     case $cpu in
4562         ap7[02]0[0-2])
4563             subarch="avr32_ap"
4564             cpuflags="-mpart=$cpu"
4565         ;;
4566         ap)
4567             subarch="avr32_ap"
4568             cpuflags="-march=$cpu"
4569         ;;
4570         uc3[ab]*)
4571             subarch="avr32_uc"
4572             cpuflags="-mcpu=$cpu"
4573         ;;
4574         uc)
4575             subarch="avr32_uc"
4576             cpuflags="-march=$cpu"
4577         ;;
4578     esac
4579
4580 elif enabled bfin; then
4581
4582     cpuflags="-mcpu=$cpu"
4583
4584 elif enabled mips; then
4585
4586     cpuflags="-march=$cpu"
4587
4588     if [ "$cpu" != "generic" ]; then
4589         disable mips32r2
4590         disable mips32r5
4591         disable mips64r2
4592         disable mips32r6
4593         disable mips64r6
4594         disable loongson2
4595         disable loongson3
4596
4597         case $cpu in
4598             24kc|24kf*|24kec|34kc|1004kc|24kef*|34kf*|1004kf*|74kc|74kf)
4599                 enable mips32r2
4600                 disable msa
4601             ;;
4602             p5600|i6400|p6600)
4603                 disable mipsdsp
4604                 disable mipsdspr2
4605             ;;
4606             loongson*)
4607                 enable loongson2
4608                 enable loongson3
4609                 enable local_aligned
4610                 enable simd_align_16
4611                 enable fast_64bit
4612                 enable fast_clz
4613                 enable fast_cmov
4614                 enable fast_unaligned
4615                 disable aligned_stack
4616                 disable mipsfpu
4617                 disable mipsdsp
4618                 disable mipsdspr2
4619                 case $cpu in
4620                     loongson3*)
4621                         cpuflags="-march=loongson3a -mhard-float -fno-expensive-optimizations"
4622                     ;;
4623                     loongson2e)
4624                         cpuflags="-march=loongson2e -mhard-float -fno-expensive-optimizations"
4625                     ;;
4626                     loongson2f)
4627                         cpuflags="-march=loongson2f -mhard-float -fno-expensive-optimizations"
4628                     ;;
4629                 esac
4630             ;;
4631             *)
4632                 # Unknown CPU. Disable everything.
4633                 warn "unknown CPU. Disabling all MIPS optimizations."
4634                 disable mipsfpu
4635                 disable mipsdsp
4636                 disable mipsdspr2
4637                 disable msa
4638                 disable mmi
4639             ;;
4640         esac
4641
4642         case $cpu in
4643             24kc)
4644                 disable mipsfpu
4645                 disable mipsdsp
4646                 disable mipsdspr2
4647             ;;
4648             24kf*)
4649                 disable mipsdsp
4650                 disable mipsdspr2
4651             ;;
4652             24kec|34kc|1004kc)
4653                 disable mipsfpu
4654                 disable mipsdspr2
4655             ;;
4656             24kef*|34kf*|1004kf*)
4657                 disable mipsdspr2
4658             ;;
4659             74kc)
4660                 disable mipsfpu
4661             ;;
4662             p5600)
4663                 enable mips32r5
4664                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
4665             ;;
4666             i6400)
4667                 enable mips64r6
4668                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4669             ;;
4670             p6600)
4671                 enable mips64r6
4672                 check_cflags "-mtune=p6600 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4673             ;;
4674         esac
4675     else
4676         # We do not disable anything. Is up to the user to disable the unwanted features.
4677         warn 'generic cpu selected'
4678     fi
4679
4680 elif enabled ppc; then
4681
4682     disable ldbrx
4683
4684     case $(tolower $cpu) in
4685         601|ppc601|powerpc601)
4686             cpuflags="-mcpu=601"
4687             disable altivec
4688         ;;
4689         603*|ppc603*|powerpc603*)
4690             cpuflags="-mcpu=603"
4691             disable altivec
4692         ;;
4693         604*|ppc604*|powerpc604*)
4694             cpuflags="-mcpu=604"
4695             disable altivec
4696         ;;
4697         g3|75*|ppc75*|powerpc75*)
4698             cpuflags="-mcpu=750"
4699             disable altivec
4700         ;;
4701         g4|745*|ppc745*|powerpc745*)
4702             cpuflags="-mcpu=7450"
4703             disable vsx
4704         ;;
4705         74*|ppc74*|powerpc74*)
4706             cpuflags="-mcpu=7400"
4707             disable vsx
4708         ;;
4709         g5|970|ppc970|powerpc970)
4710             cpuflags="-mcpu=970"
4711             disable vsx
4712         ;;
4713         power[3-6]*)
4714             cpuflags="-mcpu=$cpu"
4715             disable vsx
4716         ;;
4717         power[7-8]*)
4718             cpuflags="-mcpu=$cpu"
4719         ;;
4720         cell)
4721             cpuflags="-mcpu=cell"
4722             enable ldbrx
4723             disable vsx
4724         ;;
4725         e500mc)
4726             cpuflags="-mcpu=e500mc"
4727             disable altivec
4728         ;;
4729         e500v2)
4730             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
4731             disable altivec
4732             disable dcbzl
4733         ;;
4734         e500)
4735             cpuflags="-mcpu=8540 -mhard-float"
4736             disable altivec
4737             disable dcbzl
4738         ;;
4739     esac
4740
4741 elif enabled sparc; then
4742
4743     case $cpu in
4744         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
4745             cpuflags="-mcpu=$cpu"
4746         ;;
4747         ultrasparc*|niagara[234])
4748             cpuflags="-mcpu=$cpu"
4749         ;;
4750     esac
4751
4752 elif enabled x86; then
4753
4754     case $cpu in
4755         i[345]86|pentium)
4756             cpuflags="-march=$cpu"
4757             disable i686
4758             disable mmx
4759         ;;
4760         # targets that do NOT support nopl and conditional mov (cmov)
4761         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
4762             cpuflags="-march=$cpu"
4763             disable i686
4764         ;;
4765         # targets that do support nopl and conditional mov (cmov)
4766         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
4767         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|skylake*|knl\
4768         |amdfam10|barcelona|b[dt]ver*|znver*)
4769             cpuflags="-march=$cpu"
4770             enable i686
4771             enable fast_cmov
4772         ;;
4773         # targets that do support conditional mov but on which it's slow
4774         pentium4|pentium4m|prescott|nocona)
4775             cpuflags="-march=$cpu"
4776             enable i686
4777             disable fast_cmov
4778         ;;
4779     esac
4780
4781 fi
4782
4783 if [ "$cpu" != generic ]; then
4784     add_cflags  $cpuflags
4785     add_asflags $cpuflags
4786     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
4787 fi
4788
4789 # compiler sanity check
4790 check_exec <<EOF
4791 int main(void){ return 0; }
4792 EOF
4793 if test "$?" != 0; then
4794     echo "$cc is unable to create an executable file."
4795     if test -z "$cross_prefix" && ! enabled cross_compile ; then
4796         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
4797         echo "Only do this if you know what cross compiling means."
4798     fi
4799     die "C compiler test failed."
4800 fi
4801
4802 add_cppflags -D_ISOC99_SOURCE
4803 add_cxxflags -D__STDC_CONSTANT_MACROS
4804 check_cxxflags -std=c++11 || check_cxxflags -std=c++0x
4805
4806 # some compilers silently accept -std=c11, so we also need to check that the
4807 # version macro is defined properly
4808 test_cflags_cc -std=c11 ctype.h "__STDC_VERSION__ >= 201112L" &&
4809     add_cflags -std=c11 ||
4810     check_cflags -std=c99
4811
4812 check_cppflags -D_FILE_OFFSET_BITS=64
4813 check_cppflags -D_LARGEFILE_SOURCE
4814
4815 add_host_cppflags -D_ISOC99_SOURCE
4816 check_host_cflags -std=c99
4817 check_host_cflags -Wall
4818 check_host_cflags $host_cflags_speed
4819
4820 check_64bit(){
4821     arch32=$1
4822     arch64=$2
4823     expr=$3
4824     check_code cc "" "int test[2*($expr) - 1]" &&
4825         subarch=$arch64 || subarch=$arch32
4826     enable $subarch
4827 }
4828
4829 case "$arch" in
4830     aarch64|alpha|ia64)
4831         enabled shared && enable_weak pic
4832     ;;
4833     mips)
4834         check_64bit mips mips64 '_MIPS_SIM > 1'
4835         enabled shared && enable_weak pic
4836     ;;
4837     parisc)
4838         check_64bit parisc parisc64 'sizeof(void *) > 4'
4839         enabled shared && enable_weak pic
4840     ;;
4841     ppc)
4842         check_64bit ppc ppc64 'sizeof(void *) > 4'
4843         enabled shared && enable_weak pic
4844     ;;
4845     s390)
4846         check_64bit s390 s390x 'sizeof(void *) > 4'
4847         enabled shared && enable_weak pic
4848     ;;
4849     sparc)
4850         check_64bit sparc sparc64 'sizeof(void *) > 4'
4851         enabled shared && enable_weak pic
4852     ;;
4853     x86)
4854         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
4855         # Treat x32 as x64 for now. Note it also needs pic if shared
4856         test "$subarch" = "x86_32" && check_cpp_condition stddef.h 'defined(__x86_64__)' &&
4857             subarch=x86_64 && enable x86_64 && disable x86_32
4858         if enabled x86_64; then
4859             enabled shared && enable_weak pic
4860             objformat=elf64
4861         fi
4862     ;;
4863 esac
4864
4865 # OS specific
4866 case $target_os in
4867     aix)
4868         SHFLAGS=-shared
4869         add_cppflags '-I\$(SRC_PATH)/compat/aix'
4870         enabled shared && add_ldflags -Wl,-brtl
4871         arflags='-Xany -r -c'
4872         ;;
4873     android)
4874         disable symver
4875         enable section_data_rel_ro
4876         SLIB_INSTALL_NAME='$(SLIBNAME)'
4877         SLIB_INSTALL_LINKS=
4878         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
4879         ;;
4880     haiku)
4881         prefix_default="/boot/common"
4882         network_extralibs="-lnetwork"
4883         host_extralibs=
4884         ;;
4885     sunos)
4886         SHFLAGS='-shared -Wl,-h,$$(@F)'
4887         enabled x86 && append SHFLAGS -mimpure-text
4888         network_extralibs="-lsocket -lnsl"
4889         add_cppflags -D__EXTENSIONS__
4890         # When using suncc to build, the Solaris linker will mark
4891         # an executable with each instruction set encountered by
4892         # the Solaris assembler.  As our libraries contain their own
4893         # guards for processor-specific code, instead suppress
4894         # generation of the HWCAPS ELF section on Solaris x86 only.
4895         enabled_all suncc x86 &&
4896             echo "hwcap_1 = OVERRIDE;" > mapfile &&
4897             add_ldflags -Wl,-M,mapfile
4898         nm_default='nm -P -g'
4899