avcodec: Implement mpeg1 nvdec hwaccel
[ffmpeg.git] / configure
1 #!/bin/sh
2 #
3 # FFmpeg configure script
4 #
5 # Copyright (c) 2000-2002 Fabrice Bellard
6 # Copyright (c) 2005-2008 Diego Biurrun
7 # Copyright (c) 2005-2008 Mans Rullgard
8 #
9
10 # Prevent locale nonsense from breaking basic text processing.
11 LC_ALL=C
12 export LC_ALL
13
14 # make sure we are running under a compatible shell
15 # try to make this part work with most shells
16
17 try_exec(){
18     echo "Trying shell $1"
19     type "$1" > /dev/null 2>&1 && exec "$@"
20 }
21
22 unset foo
23 (: ${foo%%bar}) 2> /dev/null
24 E1="$?"
25
26 (: ${foo?}) 2> /dev/null
27 E2="$?"
28
29 if test "$E1" != 0 || test "$E2" = 0; then
30     echo "Broken shell detected.  Trying alternatives."
31     export FF_CONF_EXEC
32     if test "0$FF_CONF_EXEC" -lt 1; then
33         FF_CONF_EXEC=1
34         try_exec bash "$0" "$@"
35     fi
36     if test "0$FF_CONF_EXEC" -lt 2; then
37         FF_CONF_EXEC=2
38         try_exec ksh "$0" "$@"
39     fi
40     if test "0$FF_CONF_EXEC" -lt 3; then
41         FF_CONF_EXEC=3
42         try_exec /usr/xpg4/bin/sh "$0" "$@"
43     fi
44     echo "No compatible shell script interpreter found."
45     echo "This configure script requires a POSIX-compatible shell"
46     echo "such as bash or ksh."
47     echo "THIS IS NOT A BUG IN FFMPEG, DO NOT REPORT IT AS SUCH."
48     echo "Instead, install a working POSIX-compatible shell."
49     echo "Disabling this configure test will create a broken FFmpeg."
50     if test "$BASH_VERSION" = '2.04.0(1)-release'; then
51         echo "This bash version ($BASH_VERSION) is broken on your platform."
52         echo "Upgrade to a later version if available."
53     fi
54     exit 1
55 fi
56
57 test -d /usr/xpg4/bin && PATH=/usr/xpg4/bin:$PATH
58
59 show_help(){
60     cat <<EOF
61 Usage: configure [options]
62 Options: [defaults in brackets after descriptions]
63
64 Help options:
65   --help                   print this message
66   --quiet                  Suppress showing informative output
67   --list-decoders          show all available decoders
68   --list-encoders          show all available encoders
69   --list-hwaccels          show all available hardware accelerators
70   --list-demuxers          show all available demuxers
71   --list-muxers            show all available muxers
72   --list-parsers           show all available parsers
73   --list-protocols         show all available protocols
74   --list-bsfs              show all available bitstream filters
75   --list-indevs            show all available input devices
76   --list-outdevs           show all available output devices
77   --list-filters           show all available filters
78
79 Standard options:
80   --logfile=FILE           log tests and output to FILE [ffbuild/config.log]
81   --disable-logging        do not log configure debug information
82   --fatal-warnings         fail if any configure warning is generated
83   --prefix=PREFIX          install in PREFIX [$prefix_default]
84   --bindir=DIR             install binaries in DIR [PREFIX/bin]
85   --datadir=DIR            install data files in DIR [PREFIX/share/ffmpeg]
86   --docdir=DIR             install documentation in DIR [PREFIX/share/doc/ffmpeg]
87   --libdir=DIR             install libs in DIR [PREFIX/lib]
88   --shlibdir=DIR           install shared libs in DIR [LIBDIR]
89   --incdir=DIR             install includes in DIR [PREFIX/include]
90   --mandir=DIR             install man page in DIR [PREFIX/share/man]
91   --pkgconfigdir=DIR       install pkg-config files in DIR [LIBDIR/pkgconfig]
92   --enable-rpath           use rpath to allow installing libraries in paths
93                            not part of the dynamic linker search path
94                            use rpath when linking programs (USE WITH CARE)
95   --install-name-dir=DIR   Darwin directory name for installed targets
96
97 Licensing options:
98   --enable-gpl             allow use of GPL code, the resulting libs
99                            and binaries will be under GPL [no]
100   --enable-version3        upgrade (L)GPL to version 3 [no]
101   --enable-nonfree         allow use of nonfree code, the resulting libs
102                            and binaries will be unredistributable [no]
103
104 Configuration options:
105   --disable-static         do not build static libraries [no]
106   --enable-shared          build shared libraries [no]
107   --enable-small           optimize for size instead of speed
108   --disable-runtime-cpudetect disable detecting CPU capabilities at runtime (smaller binary)
109   --enable-gray            enable full grayscale support (slower color)
110   --disable-swscale-alpha  disable alpha channel support in swscale
111   --disable-all            disable building components, libraries and programs
112   --disable-autodetect     disable automatically detected external libraries [no]
113
114 Program options:
115   --disable-programs       do not build command line programs
116   --disable-ffmpeg         disable ffmpeg build
117   --disable-ffplay         disable ffplay build
118   --disable-ffprobe        disable ffprobe build
119   --disable-ffserver       disable ffserver build
120
121 Documentation options:
122   --disable-doc            do not build documentation
123   --disable-htmlpages      do not build HTML documentation pages
124   --disable-manpages       do not build man documentation pages
125   --disable-podpages       do not build POD documentation pages
126   --disable-txtpages       do not build text documentation pages
127
128 Component options:
129   --disable-avdevice       disable libavdevice build
130   --disable-avcodec        disable libavcodec build
131   --disable-avformat       disable libavformat build
132   --disable-swresample     disable libswresample build
133   --disable-swscale        disable libswscale build
134   --disable-postproc       disable libpostproc build
135   --disable-avfilter       disable libavfilter build
136   --enable-avresample      enable libavresample build [no]
137   --disable-pthreads       disable pthreads [autodetect]
138   --disable-w32threads     disable Win32 threads [autodetect]
139   --disable-os2threads     disable OS/2 threads [autodetect]
140   --disable-network        disable network support [no]
141   --disable-dct            disable DCT code
142   --disable-dwt            disable DWT code
143   --disable-error-resilience disable error resilience code
144   --disable-lsp            disable LSP code
145   --disable-lzo            disable LZO decoder code
146   --disable-mdct           disable MDCT code
147   --disable-rdft           disable RDFT code
148   --disable-fft            disable FFT code
149   --disable-faan           disable floating point AAN (I)DCT code
150   --disable-pixelutils     disable pixel utils in libavutil
151
152 Individual component options:
153   --disable-everything     disable all components listed below
154   --disable-encoder=NAME   disable encoder NAME
155   --enable-encoder=NAME    enable encoder NAME
156   --disable-encoders       disable all encoders
157   --disable-decoder=NAME   disable decoder NAME
158   --enable-decoder=NAME    enable decoder NAME
159   --disable-decoders       disable all decoders
160   --disable-hwaccel=NAME   disable hwaccel NAME
161   --enable-hwaccel=NAME    enable hwaccel NAME
162   --disable-hwaccels       disable all hwaccels
163   --disable-muxer=NAME     disable muxer NAME
164   --enable-muxer=NAME      enable muxer NAME
165   --disable-muxers         disable all muxers
166   --disable-demuxer=NAME   disable demuxer NAME
167   --enable-demuxer=NAME    enable demuxer NAME
168   --disable-demuxers       disable all demuxers
169   --enable-parser=NAME     enable parser NAME
170   --disable-parser=NAME    disable parser NAME
171   --disable-parsers        disable all parsers
172   --enable-bsf=NAME        enable bitstream filter NAME
173   --disable-bsf=NAME       disable bitstream filter NAME
174   --disable-bsfs           disable all bitstream filters
175   --enable-protocol=NAME   enable protocol NAME
176   --disable-protocol=NAME  disable protocol NAME
177   --disable-protocols      disable all protocols
178   --enable-indev=NAME      enable input device NAME
179   --disable-indev=NAME     disable input device NAME
180   --disable-indevs         disable input devices
181   --enable-outdev=NAME     enable output device NAME
182   --disable-outdev=NAME    disable output device NAME
183   --disable-outdevs        disable output devices
184   --disable-devices        disable all devices
185   --enable-filter=NAME     enable filter NAME
186   --disable-filter=NAME    disable filter NAME
187   --disable-filters        disable all filters
188   --disable-v4l2_m2m       disable V4L2 mem2mem code [autodetect]
189
190 External library support:
191
192   Using any of the following switches will allow FFmpeg to link to the
193   corresponding external library. All the components depending on that library
194   will become enabled, if all their other dependencies are met and they are not
195   explicitly disabled. E.g. --enable-libwavpack will enable linking to
196   libwavpack and allow the libwavpack encoder to be built, unless it is
197   specifically disabled with --disable-encoder=libwavpack.
198
199   Note that only the system libraries are auto-detected. All the other external
200   libraries must be explicitly enabled.
201
202   Also note that the following help text describes the purpose of the libraries
203   themselves, not all their features will necessarily be usable by FFmpeg.
204
205   --disable-alsa           disable ALSA support [autodetect]
206   --disable-appkit         disable Apple AppKit framework [autodetect]
207   --disable-avfoundation   disable Apple AVFoundation framework [autodetect]
208   --enable-avisynth        enable reading of AviSynth script files [no]
209   --disable-bzlib          disable bzlib [autodetect]
210   --disable-coreimage      disable Apple CoreImage framework [autodetect]
211   --enable-chromaprint     enable audio fingerprinting with chromaprint [no]
212   --enable-frei0r          enable frei0r video filtering [no]
213   --enable-gcrypt          enable gcrypt, needed for rtmp(t)e support
214                            if openssl, librtmp or gmp is not used [no]
215   --enable-gmp             enable gmp, needed for rtmp(t)e support
216                            if openssl or librtmp is not used [no]
217   --enable-gnutls          enable gnutls, needed for https support
218                            if openssl is not used [no]
219   --disable-iconv          disable iconv [autodetect]
220   --enable-jni             enable JNI support [no]
221   --enable-ladspa          enable LADSPA audio filtering [no]
222   --enable-libass          enable libass subtitles rendering,
223                            needed for subtitles and ass filter [no]
224   --enable-libbluray       enable BluRay reading using libbluray [no]
225   --enable-libbs2b         enable bs2b DSP library [no]
226   --enable-libcaca         enable textual display using libcaca [no]
227   --enable-libcelt         enable CELT decoding via libcelt [no]
228   --enable-libcdio         enable audio CD grabbing with libcdio [no]
229   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
230                            and libraw1394 [no]
231   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
232   --enable-libflite        enable flite (voice synthesis) support via libflite [no]
233   --enable-libfontconfig   enable libfontconfig, useful for drawtext filter [no]
234   --enable-libfreetype     enable libfreetype, needed for drawtext filter [no]
235   --enable-libfribidi      enable libfribidi, improves drawtext filter [no]
236   --enable-libgme          enable Game Music Emu via libgme [no]
237   --enable-libgsm          enable GSM de/encoding via libgsm [no]
238   --enable-libiec61883     enable iec61883 via libiec61883 [no]
239   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
240   --enable-libjack         enable JACK audio sound server [no]
241   --enable-libkvazaar      enable HEVC encoding via libkvazaar [no]
242   --enable-libmodplug      enable ModPlug via libmodplug [no]
243   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
244   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
245   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
246   --enable-libopencv       enable video filtering via libopencv [no]
247   --enable-libopenh264     enable H.264 encoding via OpenH264 [no]
248   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
249   --enable-libopenmpt      enable decoding tracked files via libopenmpt [no]
250   --enable-libopus         enable Opus de/encoding via libopus [no]
251   --enable-libpulse        enable Pulseaudio input via libpulse [no]
252   --enable-librsvg         enable SVG rasterization via librsvg [no]
253   --enable-librubberband   enable rubberband needed for rubberband filter [no]
254   --enable-librtmp         enable RTMP[E] support via librtmp [no]
255   --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
256   --enable-libsmbclient    enable Samba protocol via libsmbclient [no]
257   --enable-libsnappy       enable Snappy compression, needed for hap encoding [no]
258   --enable-libsoxr         enable Include libsoxr resampling [no]
259   --enable-libspeex        enable Speex de/encoding via libspeex [no]
260   --enable-libssh          enable SFTP protocol via libssh [no]
261   --enable-libtesseract    enable Tesseract, needed for ocr filter [no]
262   --enable-libtheora       enable Theora encoding via libtheora [no]
263   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
264   --enable-libv4l2         enable libv4l2/v4l-utils [no]
265   --enable-libvidstab      enable video stabilization using vid.stab [no]
266   --enable-libvmaf         enable vmaf filter via libvmaf [no]
267   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
268   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
269                            native implementation exists [no]
270   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
271   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
272   --enable-libwebp         enable WebP encoding via libwebp [no]
273   --enable-libx264         enable H.264 encoding via x264 [no]
274   --enable-libx265         enable HEVC encoding via x265 [no]
275   --enable-libxavs         enable AVS encoding via xavs [no]
276   --enable-libxcb          enable X11 grabbing using XCB [autodetect]
277   --enable-libxcb-shm      enable X11 grabbing shm communication [autodetect]
278   --enable-libxcb-xfixes   enable X11 grabbing mouse rendering [autodetect]
279   --enable-libxcb-shape    enable X11 grabbing shape rendering [autodetect]
280   --enable-libxvid         enable Xvid encoding via xvidcore,
281                            native MPEG-4/Xvid encoder exists [no]
282   --enable-libxml2         enable XML parsing using the C library libxml2 [no]
283   --enable-libzimg         enable z.lib, needed for zscale filter [no]
284   --enable-libzmq          enable message passing via libzmq [no]
285   --enable-libzvbi         enable teletext support via libzvbi [no]
286   --disable-lzma           disable lzma [autodetect]
287   --enable-decklink        enable Blackmagic DeckLink I/O support [no]
288   --enable-libndi_newtek   enable Newteck NDI I/O support [no]
289   --enable-mediacodec      enable Android MediaCodec support [no]
290   --enable-libmysofa       enable libmysofa, needed for sofalizer filter [no]
291   --enable-openal          enable OpenAL 1.1 capture support [no]
292   --enable-opencl          enable OpenCL code
293   --enable-opengl          enable OpenGL rendering [no]
294   --enable-openssl         enable openssl, needed for https support
295                            if gnutls is not used [no]
296   --disable-sndio          disable sndio support [autodetect]
297   --disable-schannel       disable SChannel SSP, needed for TLS support on
298                            Windows if openssl and gnutls are not used [autodetect]
299   --disable-sdl2           disable sdl2 [autodetect]
300   --disable-securetransport disable Secure Transport, needed for TLS support
301                            on OSX if openssl and gnutls are not used [autodetect]
302   --disable-xlib           disable xlib [autodetect]
303   --disable-zlib           disable zlib [autodetect]
304
305   The following libraries provide various hardware acceleration features:
306   --disable-audiotoolbox   disable Apple AudioToolbox code [autodetect]
307   --disable-cuda           disable dynamically linked Nvidia CUDA code [autodetect]
308   --enable-cuda-sdk        enable CUDA features that require the CUDA SDK [no]
309   --disable-cuvid          disable Nvidia CUVID support [autodetect]
310   --disable-d3d11va        disable Microsoft Direct3D 11 video acceleration code [autodetect]
311   --disable-dxva2          disable Microsoft DirectX 9 video acceleration code [autodetect]
312   --enable-libdrm          enable DRM code (Linux) [no]
313   --enable-libmfx          enable Intel MediaSDK (AKA Quick Sync Video) code via libmfx [no]
314   --enable-libnpp          enable Nvidia Performance Primitives-based code [no]
315   --enable-mmal            enable Broadcom Multi-Media Abstraction Layer (Raspberry Pi) via MMAL [no]
316   --disable-nvdec          disable Nvidia video decoding acceleration (via hwaccel) [autodetect]
317   --disable-nvenc          disable Nvidia video encoding code [autodetect]
318   --enable-omx             enable OpenMAX IL code [no]
319   --enable-omx-rpi         enable OpenMAX IL code for Raspberry Pi [no]
320   --enable-rkmpp           enable Rockchip Media Process Platform code [no]
321   --disable-vaapi          disable Video Acceleration API (mainly Unix/Intel) code [autodetect]
322   --disable-vdpau          disable Nvidia Video Decode and Presentation API for Unix code [autodetect]
323   --disable-videotoolbox   disable VideoToolbox code [autodetect]
324
325 Toolchain options:
326   --arch=ARCH              select architecture [$arch]
327   --cpu=CPU                select the minimum required CPU (affects
328                            instruction selection, may crash on older CPUs)
329   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
330   --progs-suffix=SUFFIX    program name suffix []
331   --enable-cross-compile   assume a cross-compiler is used
332   --sysroot=PATH           root of cross-build tree
333   --sysinclude=PATH        location of cross-build system headers
334   --target-os=OS           compiler targets OS [$target_os]
335   --target-exec=CMD        command to run executables on target
336   --target-path=DIR        path to view of build directory on target
337   --target-samples=DIR     path to samples directory on target
338   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
339   --toolchain=NAME         set tool defaults according to NAME
340   --nm=NM                  use nm tool NM [$nm_default]
341   --ar=AR                  use archive tool AR [$ar_default]
342   --as=AS                  use assembler AS [$as_default]
343   --ln_s=LN_S              use symbolic link tool LN_S [$ln_s_default]
344   --strip=STRIP            use strip tool STRIP [$strip_default]
345   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
346   --x86asmexe=EXE          use nasm-compatible assembler EXE [$x86asmexe_default]
347   --cc=CC                  use C compiler CC [$cc_default]
348   --cxx=CXX                use C compiler CXX [$cxx_default]
349   --objcc=OCC              use ObjC compiler OCC [$cc_default]
350   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
351   --nvcc=NVCC              use Nvidia CUDA compiler NVCC [$nvcc_default]
352   --ld=LD                  use linker LD [$ld_default]
353   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
354   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
355   --ranlib=RANLIB          use ranlib RANLIB [$ranlib_default]
356   --doxygen=DOXYGEN        use DOXYGEN to generate API doc [$doxygen_default]
357   --host-cc=HOSTCC         use host C compiler HOSTCC
358   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
359   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
360   --host-ld=HOSTLD         use host linker HOSTLD
361   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
362   --host-libs=HLIBS        use libs HLIBS when linking for host
363   --host-os=OS             compiler host OS [$target_os]
364   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
365   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
366   --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
367   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
368   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
369   --extra-ldsoflags=ELDFLAGS add ELDFLAGS to LDSOFLAGS [$LDSOFLAGS]
370   --extra-libs=ELIBS       add ELIBS [$ELIBS]
371   --extra-version=STRING   version string suffix []
372   --optflags=OPTFLAGS      override optimization-related compiler flags
373   --nvccflags=NVCCFLAGS    override nvcc flags [$nvccflags_default]
374   --build-suffix=SUFFIX    library name suffix []
375   --enable-pic             build position-independent code
376   --enable-thumb           compile for Thumb instruction set
377   --enable-lto             use link-time optimization
378   --env="ENV=override"     override the environment variables
379
380 Advanced options (experts only):
381   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
382   --custom-allocator=NAME  use a supported custom allocator
383   --disable-symver         disable symbol versioning
384   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
385   --disable-safe-bitstream-reader
386                            disable buffer boundary checking in bitreaders
387                            (faster, but may crash)
388   --sws-max-filter-size=N  the max filter size swscale uses [$sws_max_filter_size_default]
389
390 Optimization options (experts only):
391   --disable-asm            disable all assembly optimizations
392   --disable-altivec        disable AltiVec optimizations
393   --disable-vsx            disable VSX optimizations
394   --disable-power8         disable POWER8 optimizations
395   --disable-amd3dnow       disable 3DNow! optimizations
396   --disable-amd3dnowext    disable 3DNow! extended optimizations
397   --disable-mmx            disable MMX optimizations
398   --disable-mmxext         disable MMXEXT optimizations
399   --disable-sse            disable SSE optimizations
400   --disable-sse2           disable SSE2 optimizations
401   --disable-sse3           disable SSE3 optimizations
402   --disable-ssse3          disable SSSE3 optimizations
403   --disable-sse4           disable SSE4 optimizations
404   --disable-sse42          disable SSE4.2 optimizations
405   --disable-avx            disable AVX optimizations
406   --disable-xop            disable XOP optimizations
407   --disable-fma3           disable FMA3 optimizations
408   --disable-fma4           disable FMA4 optimizations
409   --disable-avx2           disable AVX2 optimizations
410   --disable-aesni          disable AESNI optimizations
411   --disable-armv5te        disable armv5te optimizations
412   --disable-armv6          disable armv6 optimizations
413   --disable-armv6t2        disable armv6t2 optimizations
414   --disable-vfp            disable VFP optimizations
415   --disable-neon           disable NEON optimizations
416   --disable-inline-asm     disable use of inline assembly
417   --disable-x86asm         disable use of standalone x86 assembly
418   --disable-mipsdsp        disable MIPS DSP ASE R1 optimizations
419   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
420   --disable-msa            disable MSA optimizations
421   --disable-mipsfpu        disable floating point MIPS optimizations
422   --disable-mmi            disable Loongson SIMD optimizations
423   --disable-fast-unaligned consider unaligned accesses slow
424
425 Developer options (useful when working on FFmpeg itself):
426   --disable-debug          disable debugging symbols
427   --enable-debug=LEVEL     set the debug level [$debuglevel]
428   --disable-optimizations  disable compiler optimizations
429   --enable-extra-warnings  enable more compiler warnings
430   --disable-stripping      disable stripping of executables and shared libraries
431   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
432                            2 causes a slowdown at runtime.
433   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
434   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
435                            leaks and errors, using the specified valgrind binary.
436                            Cannot be combined with --target-exec
437   --enable-ftrapv          Trap arithmetic overflows
438   --samples=PATH           location of test samples for FATE, if not set use
439                            \$FATE_SAMPLES at make invocation time.
440   --enable-neon-clobber-test check NEON registers for clobbering (should be
441                            used only for debugging purposes)
442   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
443                            should be used only for debugging purposes)
444   --enable-random          randomly enable/disable components
445   --disable-random
446   --enable-random=LIST     randomly enable/disable specific components or
447   --disable-random=LIST    component groups. LIST is a comma-separated list
448                            of NAME[:PROB] entries where NAME is a component
449                            (group) and PROB the probability associated with
450                            NAME (default 0.5).
451   --random-seed=VALUE      seed value for --enable/disable-random
452   --disable-valgrind-backtrace do not print a backtrace under Valgrind
453                            (only applies to --disable-optimizations builds)
454   --enable-osfuzz          Enable building fuzzer tool
455   --libfuzzer=PATH         path to libfuzzer
456   --ignore-tests=TESTS     comma-separated list (without "fate-" prefix
457                            in the name) of tests whose result is ignored
458   --enable-linux-perf      enable Linux Performance Monitor API
459
460 NOTE: Object files are built at the place where configure is launched.
461 EOF
462   exit 0
463 }
464
465 if test -t 1 && which tput >/dev/null 2>&1; then
466     ncolors=$(tput colors)
467     if test -n "$ncolors" && test $ncolors -ge 8; then
468         bold_color=$(tput bold)
469         warn_color=$(tput setaf 3)
470         error_color=$(tput setaf 1)
471         reset_color=$(tput sgr0)
472     fi
473     # 72 used instead of 80 since that's the default of pr
474     ncols=$(tput cols)
475 fi
476 : ${ncols:=72}
477
478 log(){
479     echo "$@" >> $logfile
480 }
481
482 log_file(){
483     log BEGIN $1
484     pr -n -t $1 >> $logfile
485     log END $1
486 }
487
488 warn(){
489     log "WARNING: $*"
490     WARNINGS="${WARNINGS}WARNING: $*\n"
491 }
492
493 die(){
494     log "$@"
495     echo "$error_color$bold_color$@$reset_color"
496     cat <<EOF
497
498 If you think configure made a mistake, make sure you are using the latest
499 version from Git.  If the latest version fails, report the problem to the
500 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
501 EOF
502     if disabled logging; then
503         cat <<EOF
504 Rerun configure with logging enabled (do not use --disable-logging), and
505 include the log this produces with your report.
506 EOF
507     else
508         cat <<EOF
509 Include the log file "$logfile" produced by configure as this will help
510 solve the problem.
511 EOF
512     fi
513     exit 1
514 }
515
516 # Avoid locale weirdness, besides we really just want to translate ASCII.
517 toupper(){
518     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
519 }
520
521 tolower(){
522     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
523 }
524
525 c_escape(){
526     echo "$*" | sed 's/["\\]/\\\0/g'
527 }
528
529 sh_quote(){
530     v=$(echo "$1" | sed "s/'/'\\\\''/g")
531     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
532     echo "$v"
533 }
534
535 cleanws(){
536     echo "$@" | sed 's/^ *//;s/[[:space:]][[:space:]]*/ /g;s/ *$//'
537 }
538
539 filter(){
540     pat=$1
541     shift
542     for v; do
543         eval "case '$v' in $pat) printf '%s ' '$v' ;; esac"
544     done
545 }
546
547 filter_out(){
548     pat=$1
549     shift
550     for v; do
551         eval "case '$v' in $pat) ;; *) printf '%s ' '$v' ;; esac"
552     done
553 }
554
555 map(){
556     m=$1
557     shift
558     for v; do eval $m; done
559 }
560
561 add_suffix(){
562     suffix=$1
563     shift
564     for v; do echo ${v}${suffix}; done
565 }
566
567 set_all(){
568     value=$1
569     shift
570     for var in $*; do
571         eval $var=$value
572     done
573 }
574
575 set_weak(){
576     value=$1
577     shift
578     for var; do
579         eval : \${$var:=$value}
580     done
581 }
582
583 sanitize_var_name(){
584     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
585 }
586
587 set_sanitized(){
588     var=$1
589     shift
590     eval $(sanitize_var_name "$var")='$*'
591 }
592
593 get_sanitized(){
594     eval echo \$$(sanitize_var_name "$1")
595 }
596
597 pushvar(){
598     for pvar in $*; do
599         eval level=\${${pvar}_level:=0}
600         eval ${pvar}_${level}="\$$pvar"
601         eval ${pvar}_level=$(($level+1))
602     done
603 }
604
605 popvar(){
606     for pvar in $*; do
607         eval level=\${${pvar}_level:-0}
608         test $level = 0 && continue
609         eval level=$(($level-1))
610         eval $pvar="\${${pvar}_${level}}"
611         eval ${pvar}_level=$level
612         eval unset ${pvar}_${level}
613     done
614 }
615
616 request(){
617     for var in $*; do
618         eval ${var}_requested=yes
619         eval $var=
620     done
621 }
622
623 enable(){
624     set_all yes $*
625 }
626
627 disable(){
628     set_all no $*
629 }
630
631 enable_weak(){
632     set_weak yes $*
633 }
634
635 disable_weak(){
636     set_weak no $*
637 }
638
639 enable_sanitized(){
640     for var; do
641         enable $(sanitize_var_name $var)
642     done
643 }
644
645 disable_sanitized(){
646     for var; do
647         disable $(sanitize_var_name $var)
648     done
649 }
650
651 do_enable_deep(){
652     for var; do
653         enabled $var && continue
654         eval sel="\$${var}_select"
655         eval sgs="\$${var}_suggest"
656         pushvar var sgs
657         enable_deep $sel
658         popvar sgs
659         enable_deep_weak $sgs
660         popvar var
661     done
662 }
663
664 enable_deep(){
665     do_enable_deep $*
666     enable $*
667 }
668
669 enable_deep_weak(){
670     for var; do
671         disabled $var && continue
672         pushvar var
673         do_enable_deep $var
674         popvar var
675         enable_weak $var
676     done
677 }
678
679 requested(){
680     test "${1#!}" = "$1" && op="=" || op="!="
681     eval test "x\$${1#!}_requested" $op "xyes"
682 }
683
684 enabled(){
685     test "${1#!}" = "$1" && op="=" || op="!="
686     eval test "x\$${1#!}" $op "xyes"
687 }
688
689 disabled(){
690     test "${1#!}" = "$1" && op="=" || op="!="
691     eval test "x\$${1#!}" $op "xno"
692 }
693
694 enabled_all(){
695     for opt; do
696         enabled $opt || return 1
697     done
698 }
699
700 disabled_all(){
701     for opt; do
702         disabled $opt || return 1
703     done
704 }
705
706 enabled_any(){
707     for opt; do
708         enabled $opt && return 0
709     done
710 }
711
712 disabled_any(){
713     for opt; do
714         disabled $opt && return 0
715     done
716     return 1
717 }
718
719 set_default(){
720     for opt; do
721         eval : \${$opt:=\$${opt}_default}
722     done
723 }
724
725 is_in(){
726     value=$1
727     shift
728     for var in $*; do
729         [ $var = $value ] && return 0
730     done
731     return 1
732 }
733
734 check_deps(){
735     for cfg; do
736         enabled ${cfg}_checking && die "Circular dependency for $cfg."
737         disabled ${cfg}_checking && continue
738         enable ${cfg}_checking
739
740         eval dep_all="\$${cfg}_deps"
741         eval dep_any="\$${cfg}_deps_any"
742         eval dep_con="\$${cfg}_conflict"
743         eval dep_sel="\$${cfg}_select"
744         eval dep_sgs="\$${cfg}_suggest"
745         eval dep_ifa="\$${cfg}_if"
746         eval dep_ifn="\$${cfg}_if_any"
747
748         pushvar cfg dep_all dep_any dep_con dep_sel dep_sgs dep_ifa dep_ifn
749         check_deps $dep_all $dep_any $dep_con $dep_sel $dep_sgs $dep_ifa $dep_ifn
750         popvar cfg dep_all dep_any dep_con dep_sel dep_sgs dep_ifa dep_ifn
751
752         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
753         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
754         enabled_all  $dep_all || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but not all dependencies are satisfied: $dep_all"; }
755         enabled_any  $dep_any || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but not any dependency is satisfied: $dep_any"; }
756         disabled_all $dep_con || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but some conflicting dependencies are unsatisfied: $dep_con"; }
757         disabled_any $dep_sel && { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but some selected dependency is unsatisfied: $dep_sel"; }
758
759         enabled $cfg && enable_deep_weak $dep_sel $dep_sgs
760
761         for dep in $dep_all $dep_any $dep_sel $dep_sgs; do
762             # filter out library deps, these do not belong in extralibs
763             is_in $dep $LIBRARY_LIST && continue
764             enabled $dep && eval append ${cfg}_extralibs ${dep}_extralibs
765         done
766
767         disable ${cfg}_checking
768     done
769 }
770
771 print_config(){
772     pfx=$1
773     files=$2
774     shift 2
775     map 'eval echo "$v \${$v:-no}"' "$@" |
776     awk "BEGIN { split(\"$files\", files) }
777         {
778             c = \"$pfx\" toupper(\$1);
779             v = \$2;
780             sub(/yes/, 1, v);
781             sub(/no/,  0, v);
782             for (f in files) {
783                 file = files[f];
784                 if (file ~ /\\.h\$/) {
785                     printf(\"#define %s %d\\n\", c, v) >>file;
786                 } else if (file ~ /\\.asm\$/) {
787                     printf(\"%%define %s %d\\n\", c, v) >>file;
788                 } else if (file ~ /\\.mak\$/) {
789                     n = -v ? \"\" : \"!\";
790                     printf(\"%s%s=yes\\n\", n, c) >>file;
791                 } else if (file ~ /\\.texi\$/) {
792                     pre = -v ? \"\" : \"@c \";
793                     yesno = \$2;
794                     c2 = tolower(c);
795                     gsub(/_/, \"-\", c2);
796                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
797                 }
798             }
799         }"
800 }
801
802 print_enabled(){
803     suf=$1
804     shift
805     for v; do
806         enabled $v && printf "%s\n" ${v%$suf}
807     done
808 }
809
810 append(){
811     var=$1
812     shift
813     eval "$var=\"\$$var $*\""
814 }
815
816 prepend(){
817     var=$1
818     shift
819     eval "$var=\"$* \$$var\""
820 }
821
822 unique(){
823     var=$1
824     uniq_list=""
825     for tok in $(eval echo \$$var); do
826         uniq_list="$(filter_out $tok $uniq_list) $tok"
827     done
828     eval "$var=\"${uniq_list}\""
829 }
830
831 resolve(){
832     var=$1
833     tmpvar=
834     for entry in $(eval echo \$$var); do
835         tmpvar="$tmpvar $(eval echo \$${entry})"
836     done
837     eval "$var=\"${tmpvar}\""
838 }
839
840 add_cppflags(){
841     append CPPFLAGS "$@"
842 }
843
844 add_cflags(){
845     append CFLAGS $($cflags_filter "$@")
846 }
847
848 add_cflags_headers(){
849     append CFLAGS_HEADERS $($cflags_filter "$@")
850 }
851
852 add_cxxflags(){
853     append CXXFLAGS $($cflags_filter "$@")
854 }
855
856 add_asflags(){
857     append ASFLAGS $($asflags_filter "$@")
858 }
859
860 add_objcflags(){
861     append OBJCFLAGS $($objcflags_filter "$@")
862 }
863
864 add_ldflags(){
865     append LDFLAGS $($ldflags_filter "$@")
866 }
867
868 add_ldexeflags(){
869     append LDEXEFLAGS $($ldflags_filter "$@")
870 }
871
872 add_ldsoflags(){
873     append LDSOFLAGS $($ldflags_filter "$@")
874 }
875
876 add_stripflags(){
877     append ASMSTRIPFLAGS "$@"
878 }
879
880 add_extralibs(){
881     prepend extralibs $($ldflags_filter "$@")
882 }
883
884 add_host_cppflags(){
885     append host_cppflags "$@"
886 }
887
888 add_host_cflags(){
889     append host_cflags $($host_cflags_filter "$@")
890 }
891
892 add_host_ldflags(){
893     append host_ldflags $($host_ldflags_filter "$@")
894 }
895
896 add_compat(){
897     append compat_objs $1
898     shift
899     map 'add_cppflags -D$v' "$@"
900 }
901
902 check_cmd(){
903     log "$@"
904     "$@" >> $logfile 2>&1
905 }
906
907 check_stat(){
908     log check_stat "$@"
909     stat "$1" >> $logfile 2>&1
910 }
911
912 cc_o(){
913     eval printf '%s\\n' $CC_O
914 }
915
916 cc_e(){
917     eval printf '%s\\n' $CC_E
918 }
919
920 check_cc(){
921     log check_cc "$@"
922     cat > $TMPC
923     log_file $TMPC
924     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
925 }
926
927 check_cxx(){
928     log check_cxx "$@"
929     cat > $TMPCPP
930     log_file $TMPCPP
931     check_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
932 }
933
934 check_objcc(){
935     log check_objcc "$@"
936     cat > $TMPM
937     log_file $TMPM
938     check_cmd $objcc -Werror=missing-prototypes $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPM
939 }
940
941 check_cpp(){
942     log check_cpp "$@"
943     cat > $TMPC
944     log_file $TMPC
945     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
946 }
947
948 as_o(){
949     eval printf '%s\\n' $AS_O
950 }
951
952 check_as(){
953     log check_as "$@"
954     cat > $TMPS
955     log_file $TMPS
956     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
957 }
958
959 check_inline_asm(){
960     log check_inline_asm "$@"
961     name="$1"
962     code="$2"
963     shift 2
964     disable $name
965     check_cc "$@" <<EOF && enable $name
966 void foo(void){ __asm__ volatile($code); }
967 EOF
968 }
969
970 check_inline_asm_flags(){
971     log check_inline_asm_flags "$@"
972     name="$1"
973     code="$2"
974     flags=''
975     shift 2
976     while [ "$1" != "" ]; do
977       append flags $1
978       shift
979     done;
980     disable $name
981     cat > $TMPC <<EOF
982 void foo(void){ __asm__ volatile($code); }
983 EOF
984     log_file $TMPC
985     check_cmd $cc $CPPFLAGS $CFLAGS $flags "$@" $CC_C $(cc_o $TMPO) $TMPC &&
986     enable $name && add_cflags $flags && add_asflags $flags && add_ldflags $flags
987 }
988
989 check_insn(){
990     log check_insn "$@"
991     check_inline_asm ${1}_inline "\"$2\""
992     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
993 }
994
995 check_x86asm(){
996     log check_x86asm "$@"
997     echo "$1" > $TMPS
998     log_file $TMPS
999     shift 1
1000     check_cmd $x86asmexe $X86ASMFLAGS -Werror "$@" -o $TMPO $TMPS
1001 }
1002
1003 ld_o(){
1004     eval printf '%s\\n' $LD_O
1005 }
1006
1007 check_ld(){
1008     log check_ld "$@"
1009     type=$1
1010     shift 1
1011     flags=$(filter_out '-l*|*.so' $@)
1012     libs=$(filter '-l*|*.so' $@)
1013     check_$type $($cflags_filter $flags) || return
1014     flags=$($ldflags_filter $flags)
1015     libs=$($ldflags_filter $libs)
1016     check_cmd $ld $LDFLAGS $LDEXEFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
1017 }
1018
1019 print_include(){
1020     hdr=$1
1021     test "${hdr%.h}" = "${hdr}" &&
1022         echo "#include $hdr"    ||
1023         echo "#include <$hdr>"
1024 }
1025
1026 check_code(){
1027     log check_code "$@"
1028     check=$1
1029     headers=$2
1030     code=$3
1031     shift 3
1032     {
1033         for hdr in $headers; do
1034             print_include $hdr
1035         done
1036         echo "int main(void) { $code; return 0; }"
1037     } | check_$check "$@"
1038 }
1039
1040 check_cppflags(){
1041     log check_cppflags "$@"
1042     check_cpp "$@" <<EOF && append CPPFLAGS "$@"
1043 #include <stdlib.h>
1044 EOF
1045 }
1046
1047 test_cflags(){
1048     log test_cflags "$@"
1049     set -- $($cflags_filter "$@")
1050     check_cc "$@" <<EOF
1051 int x;
1052 EOF
1053 }
1054
1055 check_cflags(){
1056     log check_cflags "$@"
1057     test_cflags "$@" && add_cflags "$@"
1058 }
1059
1060 check_cxxflags(){
1061     log check_cxxflags "$@"
1062     set -- $($cflags_filter "$@")
1063     check_cxx "$@" <<EOF && append CXXFLAGS "$@"
1064 int x;
1065 EOF
1066 }
1067
1068 test_objcflags(){
1069     log test_objcflags "$@"
1070     set -- $($objcflags_filter "$@")
1071     check_objcc "$@" <<EOF
1072 int x;
1073 EOF
1074 }
1075
1076 check_objcflags(){
1077     log check_objcflags "$@"
1078     test_objcflags "$@" && add_objcflags "$@"
1079 }
1080
1081 test_ldflags(){
1082     log test_ldflags "$@"
1083     set -- $($ldflags_filter "$@")
1084     check_ld "cc" "$@" <<EOF
1085 int main(void){ return 0; }
1086 EOF
1087 }
1088
1089 check_ldflags(){
1090     log check_ldflags "$@"
1091     test_ldflags "$@" && add_ldflags "$@"
1092 }
1093
1094 test_stripflags(){
1095     log test_stripflags "$@"
1096     # call check_cc to get a fresh TMPO
1097     check_cc <<EOF
1098 int main(void) { return 0; }
1099 EOF
1100     check_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
1101 }
1102
1103 check_stripflags(){
1104     log check_stripflags "$@"
1105     test_stripflags "$@" && add_stripflags "$@"
1106 }
1107
1108 check_header(){
1109     log check_header "$@"
1110     headers=$1
1111     shift
1112     disable_sanitized $headers
1113     {
1114         for hdr in $headers; do
1115             print_include $hdr
1116         done
1117         echo "int x;"
1118     } | check_cpp "$@" && enable_sanitized $headers
1119 }
1120
1121 check_header_objcc(){
1122     log check_header_objcc "$@"
1123     rm -f -- "$TMPO"
1124     header=$1
1125     shift
1126     disable_sanitized $header
1127     {
1128        echo "#include <$header>"
1129        echo "int main(void) { return 0; }"
1130     } | check_objcc && check_stat "$TMPO" && enable_sanitized $header
1131 }
1132
1133 check_apple_framework(){
1134     log check_apple_framework "$@"
1135     framework="$1"
1136     name="$(tolower $framework)"
1137     header="${framework}/${framework}.h"
1138     disable $name
1139     check_header_objcc $header &&
1140         enable $name && eval ${name}_extralibs='"-framework $framework"'
1141 }
1142
1143 check_func(){
1144     log check_func "$@"
1145     func=$1
1146     shift
1147     disable $func
1148     check_ld "cc" "$@" <<EOF && enable $func
1149 extern int $func();
1150 int main(void){ $func(); }
1151 EOF
1152 }
1153
1154 check_complexfunc(){
1155     log check_complexfunc "$@"
1156     func=$1
1157     narg=$2
1158     shift 2
1159     test $narg = 2 && args="f, g" || args="f * I"
1160     disable $func
1161     check_ld "cc" "$@" <<EOF && enable $func
1162 #include <complex.h>
1163 #include <math.h>
1164 float foo(complex float f, complex float g) { return $func($args); }
1165 int main(void){ return (int) foo; }
1166 EOF
1167 }
1168
1169 check_mathfunc(){
1170     log check_mathfunc "$@"
1171     func=$1
1172     narg=$2
1173     shift 2
1174     test $narg = 2 && args="f, g" || args="f"
1175     disable $func
1176     check_ld "cc" "$@" <<EOF && enable $func
1177 #include <math.h>
1178 float foo(float f, float g) { return $func($args); }
1179 int main(void){ return (int) foo; }
1180 EOF
1181 }
1182
1183 check_func_headers(){
1184     log check_func_headers "$@"
1185     headers=$1
1186     funcs=$2
1187     shift 2
1188     {
1189         for hdr in $headers; do
1190             print_include $hdr
1191         done
1192         echo "#include <stdint.h>"
1193         for func in $funcs; do
1194             echo "long check_$func(void) { return (long) $func; }"
1195         done
1196         echo "int main(void) { int ret = 0;"
1197         # LTO could optimize out the test functions without this
1198         for func in $funcs; do
1199             echo " ret |= ((intptr_t)check_$func) & 0xFFFF;"
1200         done
1201         echo "return ret; }"
1202     } | check_ld "cc" "$@" && enable $funcs && enable_sanitized $headers
1203 }
1204
1205 check_class_headers_cpp(){
1206     log check_class_headers_cpp "$@"
1207     headers=$1
1208     classes=$2
1209     shift 2
1210     {
1211         for hdr in $headers; do
1212             echo "#include <$hdr>"
1213         done
1214         echo "int main(void) { "
1215         i=1
1216         for class in $classes; do
1217             echo "$class obj$i;"
1218             i=$(expr $i + 1)
1219         done
1220         echo "return 0; }"
1221     } | check_ld "cxx" "$@" && enable $funcs && enable_sanitized $headers
1222 }
1223
1224 check_cpp_condition(){
1225     log check_cpp_condition "$@"
1226     header=$1
1227     condition=$2
1228     shift 2
1229     check_cpp "$@" <<EOF
1230 #include <$header>
1231 #if !($condition)
1232 #error "unsatisfied condition: $condition"
1233 #endif
1234 EOF
1235 }
1236
1237 test_cflags_cc(){
1238     log test_cflags_cc "$@"
1239     flags=$1
1240     header=$2
1241     condition=$3
1242     shift 3
1243     set -- $($cflags_filter "$flags")
1244     check_cc "$@" <<EOF
1245 #include <$header>
1246 #if !($condition)
1247 #error "unsatisfied condition: $condition"
1248 #endif
1249 EOF
1250 }
1251
1252 check_lib(){
1253     log check_lib "$@"
1254     name="$1"
1255     headers="$2"
1256     funcs="$3"
1257     shift 3
1258     disable $name
1259     check_func_headers "$headers" "$funcs" "$@" &&
1260         enable $name && eval ${name}_extralibs="\$@"
1261 }
1262
1263 check_lib_cpp(){
1264     log check_lib_cpp "$@"
1265     name="$1"
1266     headers="$2"
1267     classes="$3"
1268     shift 3
1269     disable $name
1270     check_class_headers_cpp "$headers" "$classes" "$@" &&
1271         enable $name && eval ${name}_extralibs="\$@"
1272 }
1273
1274 test_pkg_config(){
1275     log test_pkg_config "$@"
1276     name="$1"
1277     pkg_version="$2"
1278     pkg="${2%% *}"
1279     headers="$3"
1280     funcs="$4"
1281     shift 4
1282     disable $name
1283     check_cmd $pkg_config --exists --print-errors $pkg_version || return
1284     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1285     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1286     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1287         enable $name &&
1288         set_sanitized "${name}_cflags"    $pkg_cflags &&
1289         set_sanitized "${name}_extralibs" $pkg_libs
1290 }
1291
1292 check_pkg_config(){
1293     log check_pkg_config "$@"
1294     name="$1"
1295     test_pkg_config "$@" &&
1296         eval add_cflags \$${name}_cflags
1297 }
1298
1299 check_exec(){
1300     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1301 }
1302
1303 check_exec_crash(){
1304     log check_exec_crash "$@"
1305     code=$(cat)
1306
1307     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1308     # are safe but may not be available everywhere.  Thus we use
1309     # raise(SIGTERM) instead.  The check is run in a subshell so we
1310     # can redirect the "Terminated" message from the shell.  SIGBUS
1311     # is not defined by standard C so it is used conditionally.
1312
1313     (check_exec "$@") >> $logfile 2>&1 <<EOF
1314 #include <signal.h>
1315 static void sighandler(int sig){
1316     raise(SIGTERM);
1317 }
1318 int foo(void){
1319     $code
1320 }
1321 int (*func_ptr)(void) = foo;
1322 int main(void){
1323     signal(SIGILL, sighandler);
1324     signal(SIGFPE, sighandler);
1325     signal(SIGSEGV, sighandler);
1326 #ifdef SIGBUS
1327     signal(SIGBUS, sighandler);
1328 #endif
1329     return func_ptr();
1330 }
1331 EOF
1332 }
1333
1334 check_type(){
1335     log check_type "$@"
1336     headers=$1
1337     type=$2
1338     shift 2
1339     disable_sanitized "$type"
1340     check_code cc "$headers" "$type v" "$@" && enable_sanitized "$type"
1341 }
1342
1343 check_struct(){
1344     log check_struct "$@"
1345     headers=$1
1346     struct=$2
1347     member=$3
1348     shift 3
1349     disable_sanitized "${struct}_${member}"
1350     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1351         enable_sanitized "${struct}_${member}"
1352 }
1353
1354 check_builtin(){
1355     log check_builtin "$@"
1356     name=$1
1357     headers=$2
1358     builtin=$3
1359     shift 3
1360     disable "$name"
1361     check_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1362 }
1363
1364 check_compile_assert(){
1365     log check_compile_assert "$@"
1366     name=$1
1367     headers=$2
1368     condition=$3
1369     shift 3
1370     disable "$name"
1371     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1372 }
1373
1374 require(){
1375     log require "$@"
1376     name_version="$1"
1377     name="${1%% *}"
1378     headers="$2"
1379     func="$3"
1380     shift 3
1381     check_lib $name "$headers" $func "$@" || die "ERROR: $name_version not found"
1382 }
1383
1384 require_cpp(){
1385     name="$1"
1386     headers="$2"
1387     classes="$3"
1388     shift 3
1389     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1390 }
1391
1392 require_header(){
1393     log require_header "$@"
1394     headers="$1"
1395     shift
1396     check_header "$headers" "$@" || die "ERROR: $headers not found"
1397 }
1398
1399 require_cpp_condition(){
1400     log require_cpp_condition "$@"
1401     header="$1"
1402     condition="$2"
1403     shift 2
1404     check_cpp_condition "$header" "$condition" "$@" || die "ERROR: $condition not satisfied"
1405 }
1406
1407 require_pkg_config(){
1408     log require_pkg_config "$@"
1409     pkg_version="$2"
1410     check_pkg_config "$@" || die "ERROR: $pkg_version not found using pkg-config$pkg_config_fail_message"
1411 }
1412
1413 hostcc_e(){
1414     eval printf '%s\\n' $HOSTCC_E
1415 }
1416
1417 hostcc_o(){
1418     eval printf '%s\\n' $HOSTCC_O
1419 }
1420
1421 check_host_cc(){
1422     log check_host_cc "$@"
1423     cat > $TMPC
1424     log_file $TMPC
1425     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1426 }
1427
1428 check_host_cpp(){
1429     log check_host_cpp "$@"
1430     cat > $TMPC
1431     log_file $TMPC
1432     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1433 }
1434
1435 check_host_cppflags(){
1436     log check_host_cppflags "$@"
1437     check_host_cpp "$@" <<EOF && append host_cppflags "$@"
1438 #include <stdlib.h>
1439 EOF
1440 }
1441
1442 check_host_cflags(){
1443     log check_host_cflags "$@"
1444     set -- $($host_cflags_filter "$@")
1445     check_host_cc "$@" <<EOF && append host_cflags "$@"
1446 int x;
1447 EOF
1448 }
1449
1450 check_host_cpp_condition(){
1451     log check_host_cpp_condition "$@"
1452     header=$1
1453     condition=$2
1454     shift 2
1455     check_host_cpp "$@" <<EOF
1456 #include <$header>
1457 #if !($condition)
1458 #error "unsatisfied condition: $condition"
1459 #endif
1460 EOF
1461 }
1462
1463 cp_if_changed(){
1464     cmp -s "$1" "$2" && { test "$quiet" != "yes" && echo "$2 is unchanged"; } && return
1465     mkdir -p "$(dirname $2)"
1466     cp -f "$1" "$2"
1467 }
1468
1469 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1470 # system-dependent things.
1471
1472 AVCODEC_COMPONENTS="
1473     bsfs
1474     decoders
1475     encoders
1476     hwaccels
1477     parsers
1478 "
1479
1480 AVDEVICE_COMPONENTS="
1481     indevs
1482     outdevs
1483 "
1484
1485 AVFILTER_COMPONENTS="
1486     filters
1487 "
1488
1489 AVFORMAT_COMPONENTS="
1490     demuxers
1491     muxers
1492     protocols
1493 "
1494
1495 COMPONENT_LIST="
1496     $AVCODEC_COMPONENTS
1497     $AVDEVICE_COMPONENTS
1498     $AVFILTER_COMPONENTS
1499     $AVFORMAT_COMPONENTS
1500 "
1501
1502 EXAMPLE_LIST="
1503     avio_dir_cmd_example
1504     avio_reading_example
1505     decode_audio_example
1506     decode_video_example
1507     demuxing_decoding_example
1508     encode_audio_example
1509     encode_video_example
1510     extract_mvs_example
1511     filter_audio_example
1512     filtering_audio_example
1513     filtering_video_example
1514     http_multiclient_example
1515     hw_decode_example
1516     metadata_example
1517     muxing_example
1518     qsvdec_example
1519     remuxing_example
1520     resampling_audio_example
1521     scaling_video_example
1522     transcode_aac_example
1523     transcoding_example
1524 "
1525
1526 EXTERNAL_AUTODETECT_LIBRARY_LIST="
1527     alsa
1528     appkit
1529     avfoundation
1530     bzlib
1531     coreimage
1532     iconv
1533     libxcb
1534     libxcb_shm
1535     libxcb_shape
1536     libxcb_xfixes
1537     lzma
1538     schannel
1539     sdl2
1540     securetransport
1541     sndio
1542     xlib
1543     zlib
1544 "
1545
1546 EXTERNAL_LIBRARY_GPL_LIST="
1547     avisynth
1548     frei0r
1549     libcdio
1550     librubberband
1551     libvidstab
1552     libx264
1553     libx265
1554     libxavs
1555     libxvid
1556 "
1557
1558 EXTERNAL_LIBRARY_NONFREE_LIST="
1559     decklink
1560     libndi_newtek
1561     libfdk_aac
1562     openssl
1563 "
1564
1565 EXTERNAL_LIBRARY_VERSION3_LIST="
1566     gmp
1567     libopencore_amrnb
1568     libopencore_amrwb
1569     libvmaf
1570     libvo_amrwbenc
1571     rkmpp
1572 "
1573
1574 EXTERNAL_LIBRARY_GPLV3_LIST="
1575     libsmbclient
1576 "
1577
1578 EXTERNAL_LIBRARY_LIST="
1579     $EXTERNAL_LIBRARY_GPL_LIST
1580     $EXTERNAL_LIBRARY_NONFREE_LIST
1581     $EXTERNAL_LIBRARY_VERSION3_LIST
1582     $EXTERNAL_LIBRARY_GPLV3_LIST
1583     chromaprint
1584     gcrypt
1585     gnutls
1586     jni
1587     ladspa
1588     libass
1589     libbluray
1590     libbs2b
1591     libcaca
1592     libcelt
1593     libdc1394
1594     libdrm
1595     libflite
1596     libfontconfig
1597     libfreetype
1598     libfribidi
1599     libgme
1600     libgsm
1601     libiec61883
1602     libilbc
1603     libjack
1604     libkvazaar
1605     libmodplug
1606     libmp3lame
1607     libmysofa
1608     libopencv
1609     libopenh264
1610     libopenjpeg
1611     libopenmpt
1612     libopus
1613     libpulse
1614     librsvg
1615     librtmp
1616     libshine
1617     libsmbclient
1618     libsnappy
1619     libsoxr
1620     libspeex
1621     libssh
1622     libtesseract
1623     libtheora
1624     libtwolame
1625     libv4l2
1626     libvorbis
1627     libvpx
1628     libwavpack
1629     libwebp
1630     libxml2
1631     libzimg
1632     libzmq
1633     libzvbi
1634     mediacodec
1635     openal
1636     opencl
1637     opengl
1638 "
1639
1640 HWACCEL_AUTODETECT_LIBRARY_LIST="
1641     audiotoolbox
1642     crystalhd
1643     cuda
1644     cuvid
1645     d3d11va
1646     dxva2
1647     nvdec
1648     nvenc
1649     vaapi
1650     vdpau
1651     videotoolbox
1652     v4l2_m2m
1653     xvmc
1654 "
1655
1656 # catchall list of things that require external libs to link
1657 EXTRALIBS_LIST="
1658     cpu_init
1659     cws2fws
1660 "
1661
1662 HWACCEL_LIBRARY_NONFREE_LIST="
1663     cuda_sdk
1664     libnpp
1665 "
1666
1667 HWACCEL_LIBRARY_LIST="
1668     $HWACCEL_LIBRARY_NONFREE_LIST
1669     libmfx
1670     mmal
1671     omx
1672 "
1673
1674 DOCUMENT_LIST="
1675     doc
1676     htmlpages
1677     manpages
1678     podpages
1679     txtpages
1680 "
1681
1682 FEATURE_LIST="
1683     ftrapv
1684     gray
1685     hardcoded_tables
1686     omx_rpi
1687     runtime_cpudetect
1688     safe_bitstream_reader
1689     shared
1690     small
1691     static
1692     swscale_alpha
1693 "
1694
1695 LIBRARY_LIST="
1696     avcodec
1697     avdevice
1698     avfilter
1699     avformat
1700     avresample
1701     avutil
1702     postproc
1703     swresample
1704     swscale
1705 "
1706
1707 LICENSE_LIST="
1708     gpl
1709     nonfree
1710     version3
1711 "
1712
1713 PROGRAM_LIST="
1714     ffplay
1715     ffprobe
1716     ffserver
1717     ffmpeg
1718 "
1719
1720 SUBSYSTEM_LIST="
1721     dct
1722     dwt
1723     error_resilience
1724     faan
1725     fast_unaligned
1726     fft
1727     lsp
1728     lzo
1729     mdct
1730     pixelutils
1731     network
1732     rdft
1733 "
1734
1735 # COMPONENT_LIST needs to come last to ensure correct dependency checking
1736 CONFIG_LIST="
1737     $DOCUMENT_LIST
1738     $EXAMPLE_LIST
1739     $EXTERNAL_LIBRARY_LIST
1740     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1741     $HWACCEL_LIBRARY_LIST
1742     $HWACCEL_AUTODETECT_LIBRARY_LIST
1743     $FEATURE_LIST
1744     $LICENSE_LIST
1745     $LIBRARY_LIST
1746     $PROGRAM_LIST
1747     $SUBSYSTEM_LIST
1748     autodetect
1749     fontconfig
1750     linux_perf
1751     memory_poisoning
1752     neon_clobber_test
1753     ossfuzz
1754     pic
1755     thumb
1756     valgrind_backtrace
1757     xmm_clobber_test
1758     $COMPONENT_LIST
1759 "
1760
1761 THREADS_LIST="
1762     pthreads
1763     os2threads
1764     w32threads
1765 "
1766
1767 ATOMICS_LIST="
1768     atomics_gcc
1769     atomics_suncc
1770     atomics_win32
1771 "
1772
1773 AUTODETECT_LIBS="
1774     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1775     $HWACCEL_AUTODETECT_LIBRARY_LIST
1776     $THREADS_LIST
1777 "
1778
1779 ARCH_LIST="
1780     aarch64
1781     alpha
1782     arm
1783     avr32
1784     avr32_ap
1785     avr32_uc
1786     bfin
1787     ia64
1788     m68k
1789     mips
1790     mips64
1791     parisc
1792     ppc
1793     ppc64
1794     s390
1795     sh4
1796     sparc
1797     sparc64
1798     tilegx
1799     tilepro
1800     tomi
1801     x86
1802     x86_32
1803     x86_64
1804 "
1805
1806 ARCH_EXT_LIST_ARM="
1807     armv5te
1808     armv6
1809     armv6t2
1810     armv8
1811     neon
1812     vfp
1813     vfpv3
1814     setend
1815 "
1816
1817 ARCH_EXT_LIST_MIPS="
1818     mipsfpu
1819     mips32r2
1820     mips32r5
1821     mips64r2
1822     mips32r6
1823     mips64r6
1824     mipsdsp
1825     mipsdspr2
1826     msa
1827 "
1828
1829 ARCH_EXT_LIST_LOONGSON="
1830     loongson2
1831     loongson3
1832     mmi
1833 "
1834
1835 ARCH_EXT_LIST_X86_SIMD="
1836     aesni
1837     amd3dnow
1838     amd3dnowext
1839     avx
1840     avx2
1841     fma3
1842     fma4
1843     mmx
1844     mmxext
1845     sse
1846     sse2
1847     sse3
1848     sse4
1849     sse42
1850     ssse3
1851     xop
1852 "
1853
1854 ARCH_EXT_LIST_PPC="
1855     altivec
1856     dcbzl
1857     ldbrx
1858     power8
1859     ppc4xx
1860     vsx
1861 "
1862
1863 ARCH_EXT_LIST_X86="
1864     $ARCH_EXT_LIST_X86_SIMD
1865     cpunop
1866     i686
1867 "
1868
1869 ARCH_EXT_LIST="
1870     $ARCH_EXT_LIST_ARM
1871     $ARCH_EXT_LIST_PPC
1872     $ARCH_EXT_LIST_X86
1873     $ARCH_EXT_LIST_MIPS
1874     $ARCH_EXT_LIST_LOONGSON
1875 "
1876
1877 ARCH_FEATURES="
1878     aligned_stack
1879     fast_64bit
1880     fast_clz
1881     fast_cmov
1882     local_aligned
1883     simd_align_16
1884     simd_align_32
1885 "
1886
1887 BUILTIN_LIST="
1888     atomic_cas_ptr
1889     machine_rw_barrier
1890     MemoryBarrier
1891     mm_empty
1892     rdtsc
1893     sarestart
1894     sem_timedwait
1895     sync_val_compare_and_swap
1896 "
1897 HAVE_LIST_CMDLINE="
1898     inline_asm
1899     symver
1900     x86asm
1901 "
1902
1903 HAVE_LIST_PUB="
1904     bigendian
1905     fast_unaligned
1906 "
1907
1908 HEADERS_LIST="
1909     arpa_inet_h
1910     asm_types_h
1911     cdio_paranoia_h
1912     cdio_paranoia_paranoia_h
1913     cuda_h
1914     dispatch_dispatch_h
1915     dev_bktr_ioctl_bt848_h
1916     dev_bktr_ioctl_meteor_h
1917     dev_ic_bt8xx_h
1918     dev_video_bktr_ioctl_bt848_h
1919     dev_video_meteor_ioctl_meteor_h
1920     direct_h
1921     dirent_h
1922     dxgidebug_h
1923     dxva_h
1924     ES2_gl_h
1925     gsm_h
1926     io_h
1927     machine_ioctl_bt848_h
1928     machine_ioctl_meteor_h
1929     malloc_h
1930     opencv2_core_core_c_h
1931     OpenGL_gl3_h
1932     poll_h
1933     sys_param_h
1934     sys_resource_h
1935     sys_select_h
1936     sys_soundcard_h
1937     sys_time_h
1938     sys_un_h
1939     sys_videoio_h
1940     termios_h
1941     udplite_h
1942     unistd_h
1943     valgrind_valgrind_h
1944     windows_h
1945     winsock2_h
1946 "
1947
1948 INTRINSICS_LIST="
1949     intrinsics_neon
1950 "
1951
1952 COMPLEX_FUNCS="
1953     cabs
1954     cexp
1955 "
1956
1957 MATH_FUNCS="
1958     atanf
1959     atan2f
1960     cbrt
1961     cbrtf
1962     copysign
1963     cosf
1964     erf
1965     exp2
1966     exp2f
1967     expf
1968     hypot
1969     isfinite
1970     isinf
1971     isnan
1972     ldexpf
1973     llrint
1974     llrintf
1975     log2
1976     log2f
1977     log10f
1978     lrint
1979     lrintf
1980     powf
1981     rint
1982     round
1983     roundf
1984     sinf
1985     trunc
1986     truncf
1987 "
1988
1989 SYSTEM_FEATURES="
1990     atomics_native
1991     dos_paths
1992     libc_msvcrt
1993     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
1994     section_data_rel_ro
1995     threads
1996     uwp
1997     winrt
1998 "
1999
2000 SYSTEM_FUNCS="
2001     access
2002     aligned_malloc
2003     arc4random
2004     clock_gettime
2005     closesocket
2006     CommandLineToArgvW
2007     fcntl
2008     getaddrinfo
2009     gethrtime
2010     getopt
2011     GetProcessAffinityMask
2012     GetProcessMemoryInfo
2013     GetProcessTimes
2014     getrusage
2015     GetSystemTimeAsFileTime
2016     gettimeofday
2017     glob
2018     glXGetProcAddress
2019     gmtime_r
2020     inet_aton
2021     isatty
2022     kbhit
2023     localtime_r
2024     lstat
2025     lzo1x_999_compress
2026     mach_absolute_time
2027     MapViewOfFile
2028     memalign
2029     mkstemp
2030     mmap
2031     mprotect
2032     nanosleep
2033     PeekNamedPipe
2034     posix_memalign
2035     pthread_cancel
2036     sched_getaffinity
2037     SecItemImport
2038     SetConsoleTextAttribute
2039     SetConsoleCtrlHandler
2040     setmode
2041     setrlimit
2042     Sleep
2043     strerror_r
2044     sysconf
2045     sysctl
2046     usleep
2047     UTGetOSTypeFromString
2048     VirtualAlloc
2049     wglGetProcAddress
2050 "
2051
2052 SYSTEM_LIBRARIES="
2053     vaapi_drm
2054     vaapi_x11
2055     vdpau_x11
2056     wincrypt
2057 "
2058
2059 TOOLCHAIN_FEATURES="
2060     as_arch_directive
2061     as_fpu_directive
2062     as_func
2063     as_object_arch
2064     asm_mod_q
2065     blocks_extension
2066     ebp_available
2067     ebx_available
2068     gnu_as
2069     gnu_windres
2070     ibm_asm
2071     inline_asm_direct_symbol_refs
2072     inline_asm_labels
2073     inline_asm_nonlocal_labels
2074     pragma_deprecated
2075     rsync_contimeout
2076     symver_asm_label
2077     symver_gnu_asm
2078     vfp_args
2079     xform_asm
2080     xmm_clobbers
2081 "
2082
2083 TYPES_LIST="
2084     CONDITION_VARIABLE_Ptr
2085     kCMVideoCodecType_HEVC
2086     socklen_t
2087     struct_addrinfo
2088     struct_group_source_req
2089     struct_ip_mreq_source
2090     struct_ipv6_mreq
2091     struct_msghdr_msg_flags
2092     struct_pollfd
2093     struct_rusage_ru_maxrss
2094     struct_sctp_event_subscribe
2095     struct_sockaddr_in6
2096     struct_sockaddr_sa_len
2097     struct_sockaddr_storage
2098     struct_stat_st_mtim_tv_nsec
2099     struct_v4l2_frmivalenum_discrete
2100 "
2101
2102 HAVE_LIST="
2103     $ARCH_EXT_LIST
2104     $(add_suffix _external $ARCH_EXT_LIST)
2105     $(add_suffix _inline   $ARCH_EXT_LIST)
2106     $ARCH_FEATURES
2107     $ATOMICS_LIST
2108     $BUILTIN_LIST
2109     $COMPLEX_FUNCS
2110     $HAVE_LIST_CMDLINE
2111     $HAVE_LIST_PUB
2112     $HEADERS_LIST
2113     $INTRINSICS_LIST
2114     $MATH_FUNCS
2115     $SYSTEM_FEATURES
2116     $SYSTEM_FUNCS
2117     $SYSTEM_LIBRARIES
2118     $THREADS_LIST
2119     $TOOLCHAIN_FEATURES
2120     $TYPES_LIST
2121     makeinfo
2122     makeinfo_html
2123     perl
2124     pod2man
2125     texi2html
2126 "
2127
2128 # options emitted with CONFIG_ prefix but not available on the command line
2129 CONFIG_EXTRA="
2130     aandcttables
2131     ac3dsp
2132     adts_header
2133     audio_frame_queue
2134     audiodsp
2135     blockdsp
2136     bswapdsp
2137     cabac
2138     cbs
2139     cbs_h264
2140     cbs_h265
2141     cbs_mpeg2
2142     dirac_parse
2143     dvprofile
2144     exif
2145     faandct
2146     faanidct
2147     fdctdsp
2148     flacdsp
2149     fmtconvert
2150     frame_thread_encoder
2151     g722dsp
2152     golomb
2153     gplv3
2154     h263dsp
2155     h264chroma
2156     h264dsp
2157     h264parse
2158     h264pred
2159     h264qpel
2160     hevcparse
2161     hpeldsp
2162     huffman
2163     huffyuvdsp
2164     huffyuvencdsp
2165     idctdsp
2166     iirfilter
2167     mdct15
2168     intrax8
2169     iso_media
2170     ividsp
2171     jpegtables
2172     lgplv3
2173     libx262
2174     llauddsp
2175     llviddsp
2176     llvidencdsp
2177     lpc
2178     lzf
2179     me_cmp
2180     mpeg_er
2181     mpegaudio
2182     mpegaudiodsp
2183     mpegaudioheader
2184     mpegvideo
2185     mpegvideoenc
2186     mss34dsp
2187     pixblockdsp
2188     qpeldsp
2189     qsv
2190     qsvdec
2191     qsvenc
2192     qsvvpp
2193     rangecoder
2194     riffdec
2195     riffenc
2196     rtpdec
2197     rtpenc_chain
2198     rv34dsp
2199     sinewin
2200     snappy
2201     srtp
2202     startcode
2203     texturedsp
2204     texturedspenc
2205     tpeldsp
2206     vaapi_1
2207     vaapi_encode
2208     vc1dsp
2209     videodsp
2210     vp3dsp
2211     vp56dsp
2212     vp8dsp
2213     wma_freqs
2214     wmv2dsp
2215 "
2216
2217 CMDLINE_SELECT="
2218     $ARCH_EXT_LIST
2219     $CONFIG_LIST
2220     $HAVE_LIST_CMDLINE
2221     $THREADS_LIST
2222     asm
2223     cross_compile
2224     debug
2225     extra_warnings
2226     logging
2227     lto
2228     optimizations
2229     rpath
2230     stripping
2231 "
2232
2233 PATHS_LIST="
2234     bindir
2235     datadir
2236     docdir
2237     incdir
2238     libdir
2239     mandir
2240     pkgconfigdir
2241     prefix
2242     shlibdir
2243     install_name_dir
2244 "
2245
2246 CMDLINE_SET="
2247     $PATHS_LIST
2248     ar
2249     arch
2250     as
2251     assert_level
2252     build_suffix
2253     cc
2254     objcc
2255     cpu
2256     cross_prefix
2257     custom_allocator
2258     cxx
2259     dep_cc
2260     doxygen
2261     env
2262     extra_version
2263     gas
2264     host_cc
2265     host_cflags
2266     host_extralibs
2267     host_ld
2268     host_ldflags
2269     host_os
2270     ignore_tests
2271     install
2272     ld
2273     ln_s
2274     logfile
2275     malloc_prefix
2276     nm
2277     optflags
2278     nvccflags
2279     pkg_config
2280     pkg_config_flags
2281     progs_suffix
2282     random_seed
2283     ranlib
2284     samples
2285     strip
2286     sws_max_filter_size
2287     sysinclude
2288     sysroot
2289     target_exec
2290     target_os
2291     target_path
2292     target_samples
2293     tempprefix
2294     toolchain
2295     valgrind
2296     x86asmexe
2297 "
2298
2299 CMDLINE_APPEND="
2300     extra_cflags
2301     extra_cxxflags
2302     extra_objcflags
2303     host_cppflags
2304 "
2305
2306 # code dependency declarations
2307
2308 # architecture extensions
2309
2310 armv5te_deps="arm"
2311 armv6_deps="arm"
2312 armv6t2_deps="arm"
2313 armv8_deps="aarch64"
2314 neon_deps_any="aarch64 arm"
2315 intrinsics_neon_deps="neon"
2316 vfp_deps_any="aarch64 arm"
2317 vfpv3_deps="vfp"
2318 setend_deps="arm"
2319
2320 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2321
2322 altivec_deps="ppc"
2323 dcbzl_deps="ppc"
2324 ldbrx_deps="ppc"
2325 ppc4xx_deps="ppc"
2326 vsx_deps="altivec"
2327 power8_deps="vsx"
2328
2329 loongson2_deps="mips"
2330 loongson3_deps="mips"
2331 mips32r2_deps="mips"
2332 mips32r5_deps="mips"
2333 mips32r6_deps="mips"
2334 mips64r2_deps="mips"
2335 mips64r6_deps="mips"
2336 mipsfpu_deps="mips"
2337 mipsdsp_deps="mips"
2338 mipsdspr2_deps="mips"
2339 mmi_deps="mips"
2340 msa_deps="mipsfpu"
2341
2342 cpunop_deps="i686"
2343 x86_64_select="i686"
2344 x86_64_suggest="fast_cmov"
2345
2346 amd3dnow_deps="mmx"
2347 amd3dnowext_deps="amd3dnow"
2348 i686_deps="x86"
2349 mmx_deps="x86"
2350 mmxext_deps="mmx"
2351 sse_deps="mmxext"
2352 sse2_deps="sse"
2353 sse3_deps="sse2"
2354 ssse3_deps="sse3"
2355 sse4_deps="ssse3"
2356 sse42_deps="sse4"
2357 aesni_deps="sse42"
2358 avx_deps="sse42"
2359 xop_deps="avx"
2360 fma3_deps="avx"
2361 fma4_deps="avx"
2362 avx2_deps="avx"
2363
2364 mmx_external_deps="x86asm"
2365 mmx_inline_deps="inline_asm x86"
2366 mmx_suggest="mmx_external mmx_inline"
2367
2368 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2369     eval dep=\$${ext}_deps
2370     eval ${ext}_external_deps='"${dep}_external"'
2371     eval ${ext}_inline_deps='"${dep}_inline"'
2372     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2373 done
2374
2375 aligned_stack_if_any="aarch64 ppc x86"
2376 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2377 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2378 fast_unaligned_if_any="aarch64 ppc x86"
2379 simd_align_16_if_any="altivec neon sse"
2380 simd_align_32_if_any="avx"
2381
2382 # system capabilities
2383 symver_if_any="symver_asm_label symver_gnu_asm"
2384 valgrind_backtrace_conflict="optimizations"
2385 valgrind_backtrace_deps="valgrind_valgrind_h"
2386
2387 # threading support
2388 atomics_gcc_if="sync_val_compare_and_swap"
2389 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2390 atomics_win32_if="MemoryBarrier"
2391 atomics_native_if_any="$ATOMICS_LIST"
2392 w32threads_deps="atomics_native"
2393 threads_if_any="$THREADS_LIST"
2394
2395 # subsystems
2396 cbs_h264_select="cbs golomb"
2397 cbs_h265_select="cbs golomb"
2398 cbs_mpeg2_select="cbs"
2399 dct_select="rdft"
2400 dirac_parse_select="golomb"
2401 error_resilience_select="me_cmp"
2402 faandct_deps="faan"
2403 faandct_select="fdctdsp"
2404 faanidct_deps="faan"
2405 faanidct_select="idctdsp"
2406 h264dsp_select="startcode"
2407 hevcparse_select="golomb"
2408 frame_thread_encoder_deps="encoders threads"
2409 intrax8_select="blockdsp idctdsp"
2410 mdct_select="fft"
2411 mdct15_select="fft"
2412 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2413 mpeg_er_select="error_resilience"
2414 mpegaudio_select="mpegaudiodsp mpegaudioheader"
2415 mpegaudiodsp_select="dct"
2416 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2417 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
2418 vc1dsp_select="h264chroma qpeldsp startcode"
2419 rdft_select="fft"
2420
2421 # decoders / encoders
2422 aac_decoder_select="adts_header mdct15 mdct sinewin"
2423 aac_fixed_decoder_select="mdct sinewin"
2424 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2425 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2426 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2427 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2428 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2429 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2430 adpcm_g722_decoder_select="g722dsp"
2431 adpcm_g722_encoder_select="g722dsp"
2432 aic_decoder_select="golomb idctdsp"
2433 alac_encoder_select="lpc"
2434 als_decoder_select="bswapdsp"
2435 amrnb_decoder_select="lsp"
2436 amrwb_decoder_select="lsp"
2437 amv_decoder_select="sp5x_decoder exif"
2438 amv_encoder_select="aandcttables jpegtables mpegvideoenc"
2439 ape_decoder_select="bswapdsp llauddsp"
2440 apng_decoder_deps="zlib"
2441 apng_encoder_deps="zlib"
2442 apng_encoder_select="llvidencdsp"
2443 aptx_decoder_select="audio_frame_queue"
2444 aptx_encoder_select="audio_frame_queue"
2445 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2446 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2447 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2448 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2449 atrac1_decoder_select="mdct sinewin"
2450 atrac3_decoder_select="mdct"
2451 atrac3p_decoder_select="mdct sinewin"
2452 avrn_decoder_select="exif jpegtables"
2453 bink_decoder_select="blockdsp hpeldsp"
2454 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2455 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2456 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2457 clearvideo_decoder_select="idctdsp"
2458 cllc_decoder_select="bswapdsp"
2459 comfortnoise_encoder_select="lpc"
2460 cook_decoder_select="audiodsp mdct sinewin"
2461 cscd_decoder_select="lzo"
2462 cscd_decoder_suggest="zlib"
2463 dca_decoder_select="mdct"
2464 dds_decoder_select="texturedsp"
2465 dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
2466 dnxhd_decoder_select="blockdsp idctdsp"
2467 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2468 dolby_e_decoder_select="mdct"
2469 dvvideo_decoder_select="dvprofile idctdsp"
2470 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2471 dxa_decoder_deps="zlib"
2472 dxv_decoder_select="lzf texturedsp"
2473 eac3_decoder_select="ac3_decoder"
2474 eac3_encoder_select="ac3_encoder"
2475 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2476 eatgq_decoder_select="aandcttables"
2477 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2478 exr_decoder_deps="zlib"
2479 ffv1_decoder_select="rangecoder"
2480 ffv1_encoder_select="rangecoder"
2481 ffvhuff_decoder_select="huffyuv_decoder"
2482 ffvhuff_encoder_select="huffyuv_encoder"
2483 fic_decoder_select="golomb"
2484 flac_decoder_select="flacdsp"
2485 flac_encoder_select="bswapdsp flacdsp lpc"
2486 flashsv2_decoder_deps="zlib"
2487 flashsv2_encoder_deps="zlib"
2488 flashsv_decoder_deps="zlib"
2489 flashsv_encoder_deps="zlib"
2490 flv_decoder_select="h263_decoder"
2491 flv_encoder_select="h263_encoder"
2492 fourxm_decoder_select="blockdsp bswapdsp"
2493 fraps_decoder_select="bswapdsp huffman"
2494 g2m_decoder_deps="zlib"
2495 g2m_decoder_select="blockdsp idctdsp jpegtables"
2496 g729_decoder_select="audiodsp"
2497 h261_decoder_select="mpegvideo"
2498 h261_encoder_select="aandcttables mpegvideoenc"
2499 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2500 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2501 h263i_decoder_select="h263_decoder"
2502 h263p_decoder_select="h263_decoder"
2503 h263p_encoder_select="h263_encoder"
2504 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
2505 h264_decoder_suggest="error_resilience"
2506 hap_decoder_select="snappy texturedsp"
2507 hap_encoder_deps="libsnappy"
2508 hap_encoder_select="texturedspenc"
2509 hevc_decoder_select="bswapdsp cabac golomb hevcparse videodsp"
2510 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2511 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llvidencdsp"
2512 iac_decoder_select="imc_decoder"
2513 imc_decoder_select="bswapdsp fft mdct sinewin"
2514 indeo3_decoder_select="hpeldsp"
2515 indeo4_decoder_select="ividsp"
2516 indeo5_decoder_select="ividsp"
2517 interplay_video_decoder_select="hpeldsp"
2518 jpegls_decoder_select="mjpeg_decoder"
2519 jv_decoder_select="blockdsp"
2520 lagarith_decoder_select="llviddsp"
2521 ljpeg_encoder_select="aandcttables idctdsp jpegtables mpegvideoenc"
2522 magicyuv_decoder_select="llviddsp"
2523 magicyuv_encoder_select="llvidencdsp"
2524 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2525 metasound_decoder_select="lsp mdct sinewin"
2526 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2527 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2528 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2529 mjpegb_decoder_select="mjpeg_decoder"
2530 mlp_decoder_select="mlp_parser"
2531 mlp_encoder_select="lpc"
2532 motionpixels_decoder_select="bswapdsp"
2533 mp1_decoder_select="mpegaudio"
2534 mp1float_decoder_select="mpegaudio"
2535 mp2_decoder_select="mpegaudio"
2536 mp2float_decoder_select="mpegaudio"
2537 mp3_decoder_select="mpegaudio"
2538 mp3adu_decoder_select="mpegaudio"
2539 mp3adufloat_decoder_select="mpegaudio"
2540 mp3float_decoder_select="mpegaudio"
2541 mp3on4_decoder_select="mpegaudio"
2542 mp3on4float_decoder_select="mpegaudio"
2543 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2544 mpc8_decoder_select="mpegaudiodsp"
2545 mpegvideo_decoder_select="mpegvideo"
2546 mpeg1video_decoder_select="mpegvideo"
2547 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2548 mpeg2video_decoder_select="mpegvideo"
2549 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2550 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2551 mpeg4_encoder_select="h263_encoder"
2552 msa1_decoder_select="mss34dsp"
2553 mscc_decoder_deps="zlib"
2554 msmpeg4v1_decoder_select="h263_decoder"
2555 msmpeg4v2_decoder_select="h263_decoder"
2556 msmpeg4v2_encoder_select="h263_encoder"
2557 msmpeg4v3_decoder_select="h263_decoder"
2558 msmpeg4v3_encoder_select="h263_encoder"
2559 mss2_decoder_select="mpegvideo qpeldsp vc1_decoder"
2560 mts2_decoder_select="mss34dsp"
2561 mxpeg_decoder_select="mjpeg_decoder"
2562 nellymoser_decoder_select="mdct sinewin"
2563 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2564 nuv_decoder_select="idctdsp lzo"
2565 on2avc_decoder_select="mdct"
2566 opus_decoder_deps="swresample"
2567 opus_decoder_select="mdct15"
2568 opus_encoder_select="audio_frame_queue mdct15"
2569 png_decoder_deps="zlib"
2570 png_encoder_deps="zlib"
2571 png_encoder_select="llvidencdsp"
2572 prores_decoder_select="blockdsp idctdsp"
2573 prores_encoder_select="fdctdsp"
2574 qcelp_decoder_select="lsp"
2575 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2576 ra_144_decoder_select="audiodsp"
2577 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2578 ralf_decoder_select="golomb"
2579 rawvideo_decoder_select="bswapdsp"
2580 rscc_decoder_deps="zlib"
2581 rtjpeg_decoder_select="me_cmp"
2582 rv10_decoder_select="h263_decoder"
2583 rv10_encoder_select="h263_encoder"
2584 rv20_decoder_select="h263_decoder"
2585 rv20_encoder_select="h263_encoder"
2586 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2587 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2588 screenpresso_decoder_deps="zlib"
2589 shorten_decoder_select="bswapdsp"
2590 sipr_decoder_select="lsp"
2591 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2592 snow_encoder_select="aandcttables dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2593 sonic_decoder_select="golomb rangecoder"
2594 sonic_encoder_select="golomb rangecoder"
2595 sonic_ls_encoder_select="golomb rangecoder"
2596 sp5x_decoder_select="mjpeg_decoder"
2597 srgc_decoder_deps="zlib"
2598 svq1_decoder_select="hpeldsp"
2599 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2600 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2601 svq3_decoder_suggest="zlib"
2602 tak_decoder_select="audiodsp"
2603 tdsc_decoder_deps="zlib"
2604 tdsc_decoder_select="mjpeg_decoder"
2605 theora_decoder_select="vp3_decoder"
2606 thp_decoder_select="mjpeg_decoder"
2607 tiff_decoder_suggest="zlib lzma"
2608 tiff_encoder_suggest="zlib"
2609 truehd_decoder_select="mlp_parser"
2610 truehd_encoder_select="lpc"
2611 truemotion2_decoder_select="bswapdsp"
2612 truespeech_decoder_select="bswapdsp"
2613 tscc_decoder_deps="zlib"
2614 twinvq_decoder_select="mdct lsp sinewin"
2615 txd_decoder_select="texturedsp"
2616 utvideo_decoder_select="bswapdsp llviddsp"
2617 utvideo_encoder_select="bswapdsp huffman llvidencdsp"
2618 vble_decoder_select="llviddsp"
2619 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 mpegvideo vc1dsp"
2620 vc1image_decoder_select="vc1_decoder"
2621 vorbis_decoder_select="mdct"
2622 vorbis_encoder_select="mdct"
2623 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2624 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2625 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2626 vp6a_decoder_select="vp6_decoder"
2627 vp6f_decoder_select="vp6_decoder"
2628 vp7_decoder_select="h264pred videodsp vp8dsp"
2629 vp8_decoder_select="h264pred videodsp vp8dsp"
2630 vp9_decoder_select="videodsp vp9_parser"
2631 webp_decoder_select="vp8_decoder exif"
2632 wmalossless_decoder_select="llauddsp"
2633 wmapro_decoder_select="mdct sinewin wma_freqs"
2634 wmav1_decoder_select="mdct sinewin wma_freqs"
2635 wmav1_encoder_select="mdct sinewin wma_freqs"
2636 wmav2_decoder_select="mdct sinewin wma_freqs"
2637 wmav2_encoder_select="mdct sinewin wma_freqs"
2638 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2639 wmv1_decoder_select="h263_decoder"
2640 wmv1_encoder_select="h263_encoder"
2641 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2642 wmv2_encoder_select="h263_encoder wmv2dsp"
2643 wmv3_decoder_select="vc1_decoder"
2644 wmv3image_decoder_select="wmv3_decoder"
2645 xma1_decoder_select="wmapro_decoder"
2646 xma2_decoder_select="wmapro_decoder"
2647 zerocodec_decoder_deps="zlib"
2648 zlib_decoder_deps="zlib"
2649 zlib_encoder_deps="zlib"
2650 zmbv_decoder_deps="zlib"
2651 zmbv_encoder_deps="zlib"
2652
2653 # hardware accelerators
2654 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2655 cuda_deps_any="libdl LoadLibrary"
2656 cuvid_deps="cuda"
2657 d3d11va_deps="dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2658 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode ole32 user32"
2659 nvdec_deps="cuda"
2660 videotoolbox_hwaccel_deps="videotoolbox pthreads"
2661 videotoolbox_hwaccel_extralibs="-framework QuartzCore"
2662 xvmc_deps="X11_extensions_XvMClib_h"
2663
2664 h263_vaapi_hwaccel_deps="vaapi"
2665 h263_vaapi_hwaccel_select="h263_decoder"
2666 h263_videotoolbox_hwaccel_deps="videotoolbox"
2667 h263_videotoolbox_hwaccel_select="h263_decoder"
2668 h264_cuvid_hwaccel_select="h264_cuvid_decoder"
2669 h264_d3d11va_hwaccel_deps="d3d11va"
2670 h264_d3d11va_hwaccel_select="h264_decoder"
2671 h264_d3d11va2_hwaccel_deps="d3d11va"
2672 h264_d3d11va2_hwaccel_select="h264_decoder"
2673 h264_dxva2_hwaccel_deps="dxva2"
2674 h264_dxva2_hwaccel_select="h264_decoder"
2675 h264_mediacodec_hwaccel_deps="mediacodec"
2676 h264_mmal_hwaccel_deps="mmal"
2677 h264_nvdec_hwaccel_deps="nvdec"
2678 h264_nvdec_hwaccel_select="h264_decoder"
2679 h264_qsv_hwaccel_deps="libmfx"
2680 h264_vaapi_hwaccel_deps="vaapi"
2681 h264_vaapi_hwaccel_select="h264_decoder"
2682 h264_vdpau_hwaccel_deps="vdpau"
2683 h264_vdpau_hwaccel_select="h264_decoder"
2684 h264_videotoolbox_hwaccel_deps="videotoolbox"
2685 h264_videotoolbox_hwaccel_select="h264_decoder"
2686 hevc_cuvid_hwaccel_select="hevc_cuvid_decoder"
2687 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2688 hevc_d3d11va_hwaccel_select="hevc_decoder"
2689 hevc_mediacodec_hwaccel_deps="mediacodec"
2690 hevc_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2691 hevc_d3d11va2_hwaccel_select="hevc_decoder"
2692 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2693 hevc_dxva2_hwaccel_select="hevc_decoder"
2694 hevc_nvdec_hwaccel_deps="nvdec"
2695 hevc_nvdec_hwaccel_select="hevc_decoder"
2696 hevc_qsv_hwaccel_deps="libmfx"
2697 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2698 hevc_vaapi_hwaccel_select="hevc_decoder"
2699 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2700 hevc_vdpau_hwaccel_select="hevc_decoder"
2701 hevc_videotoolbox_hwaccel_deps="videotoolbox"
2702 hevc_videotoolbox_hwaccel_select="hevc_decoder"
2703 mjpeg_cuvid_hwaccel_select="mjpeg_cuvid_decoder"
2704 mpeg_xvmc_hwaccel_deps="xvmc"
2705 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2706 mpeg1_cuvid_hwaccel_select="mpeg1_cuvid_decoder"
2707 mpeg1_nvdec_hwaccel_deps="nvdec"
2708 mpeg1_nvdec_hwaccel_select="mpeg1video_decoder"
2709 mpeg1_vdpau_hwaccel_deps="vdpau"
2710 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2711 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2712 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2713 mpeg1_xvmc_hwaccel_deps="xvmc"
2714 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2715 mpeg2_cuvid_hwaccel_select="mpeg2_cuvid_decoder"
2716 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2717 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2718 mpeg2_d3d11va2_hwaccel_deps="d3d11va"
2719 mpeg2_d3d11va2_hwaccel_select="mpeg2video_decoder"
2720 mpeg2_dxva2_hwaccel_deps="dxva2"
2721 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2722 mpeg2_mediacodec_hwaccel_deps="mediacodec"
2723 mpeg2_mmal_hwaccel_deps="mmal"
2724 mpeg2_nvdec_hwaccel_deps="nvdec"
2725 mpeg2_nvdec_hwaccel_select="mpeg2video_decoder"
2726 mpeg2_qsv_hwaccel_deps="libmfx"
2727 mpeg2_vaapi_hwaccel_deps="vaapi"
2728 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2729 mpeg2_vdpau_hwaccel_deps="vdpau"
2730 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2731 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2732 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2733 mpeg2_xvmc_hwaccel_deps="xvmc"
2734 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2735 mpeg4_cuvid_hwaccel_select="mpeg4_cuvid_decoder"
2736 mpeg4_mediacodec_hwaccel_deps="mediacodec"
2737 mpeg4_mmal_hwaccel_deps="mmal"
2738 mpeg4_vaapi_hwaccel_deps="vaapi"
2739 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2740 mpeg4_vdpau_hwaccel_deps="vdpau"
2741 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2742 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2743 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2744 vc1_cuvid_hwaccel_select="vc1_cuvid_decoder"
2745 vc1_d3d11va_hwaccel_deps="d3d11va"
2746 vc1_d3d11va_hwaccel_select="vc1_decoder"
2747 vc1_d3d11va2_hwaccel_deps="d3d11va"
2748 vc1_d3d11va2_hwaccel_select="vc1_decoder"
2749 vc1_dxva2_hwaccel_deps="dxva2"
2750 vc1_dxva2_hwaccel_select="vc1_decoder"
2751 vc1_mmal_hwaccel_deps="mmal"
2752 vc1_nvdec_hwaccel_deps="nvdec"
2753 vc1_nvdec_hwaccel_select="vc1_decoder"
2754 vc1_qsv_hwaccel_deps="libmfx"
2755 vc1_vaapi_hwaccel_deps="vaapi"
2756 vc1_vaapi_hwaccel_select="vc1_decoder"
2757 vc1_vdpau_hwaccel_deps="vdpau"
2758 vc1_vdpau_hwaccel_select="vc1_decoder"
2759 vp8_cuvid_hwaccel_select="vp8_cuvid_decoder"
2760 vp9_cuvid_hwaccel_select="vp9_cuvid_decoder"
2761 vp8_mediacodec_hwaccel_deps="mediacodec"
2762 vp8_qsv_hwaccel_deps="libmfx"
2763 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2764 vp9_d3d11va_hwaccel_select="vp9_decoder"
2765 vp9_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2766 vp9_d3d11va2_hwaccel_select="vp9_decoder"
2767 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
2768 vp9_dxva2_hwaccel_select="vp9_decoder"
2769 vp9_mediacodec_hwaccel_deps="mediacodec"
2770 vp9_nvdec_hwaccel_deps="nvdec"
2771 vp9_nvdec_hwaccel_select="vp9_decoder"
2772 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9_bit_depth"
2773 vp9_vaapi_hwaccel_select="vp9_decoder"
2774 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2775 wmv3_d3d11va2_hwaccel_select="vc1_d3d11va2_hwaccel"
2776 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2777 wmv3_nvdec_hwaccel_select="vc1_nvdec_hwaccel"
2778 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2779 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2780
2781 # hardware-accelerated codecs
2782 omx_deps="libdl pthreads"
2783 omx_rpi_select="omx"
2784 qsv_deps="libmfx"
2785 qsvdec_select="qsv"
2786 qsvenc_select="qsv"
2787 qsvvpp_select="qsv"
2788 vaapi_encode_deps="vaapi"
2789 v4l2_m2m_deps_any="linux_videodev2_h"
2790
2791 hwupload_cuda_filter_deps="cuda"
2792 scale_npp_filter_deps="cuda libnpp"
2793 scale_cuda_filter_deps="cuda_sdk"
2794 thumbnail_cuda_filter_deps="cuda_sdk"
2795
2796 nvenc_deps="cuda"
2797 nvenc_deps_any="libdl LoadLibrary"
2798 nvenc_encoder_deps="nvenc"
2799
2800 h263_v4l2m2m_decoder_deps="v4l2_m2m h263_v4l2_m2m"
2801 h263_v4l2m2m_encoder_deps="v4l2_m2m h263_v4l2_m2m"
2802 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2803 h264_cuvid_decoder_deps="cuvid"
2804 h264_cuvid_decoder_select="h264_mp4toannexb_bsf"
2805 h264_mediacodec_decoder_deps="mediacodec"
2806 h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
2807 h264_mmal_decoder_deps="mmal"
2808 h264_nvenc_encoder_deps="nvenc"
2809 h264_omx_encoder_deps="omx"
2810 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2811 h264_qsv_encoder_select="qsvenc"
2812 h264_rkmpp_decoder_deps="rkmpp"
2813 h264_rkmpp_decoder_select="h264_mp4toannexb_bsf"
2814 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2815 h264_vaapi_encoder_select="cbs_h264 vaapi_encode"
2816 h264_v4l2m2m_decoder_deps="v4l2_m2m h264_v4l2_m2m"
2817 h264_v4l2m2m_encoder_deps="v4l2_m2m h264_v4l2_m2m"
2818 hevc_cuvid_decoder_deps="cuvid"
2819 hevc_cuvid_decoder_select="hevc_mp4toannexb_bsf"
2820 hevc_mediacodec_decoder_deps="mediacodec"
2821 hevc_mediacodec_decoder_select="hevc_mp4toannexb_bsf hevc_parser"
2822 hevc_nvenc_encoder_deps="nvenc"
2823 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec hevc_qsv_hwaccel"
2824 hevc_qsv_encoder_select="hevcparse qsvenc"
2825 hevc_rkmpp_decoder_deps="rkmpp"
2826 hevc_rkmpp_decoder_select="hevc_mp4toannexb_bsf"
2827 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2828 hevc_vaapi_encoder_select="cbs_h265 vaapi_encode"
2829 hevc_v4l2m2m_decoder_deps="v4l2_m2m hevc_v4l2_m2m"
2830 hevc_v4l2m2m_encoder_deps="v4l2_m2m hevc_v4l2_m2m"
2831 mjpeg_cuvid_decoder_deps="cuvid"
2832 mjpeg_qsv_encoder_deps="libmfx"
2833 mjpeg_qsv_encoder_select="qsvenc"
2834 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2835 mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
2836 mpeg1_cuvid_decoder_deps="cuvid"
2837 mpeg1_v4l2m2m_decoder_deps="v4l2_m2m mpeg1_v4l2_m2m"
2838 mpeg2_crystalhd_decoder_select="crystalhd"
2839 mpeg2_cuvid_decoder_deps="cuvid"
2840 mpeg2_mmal_decoder_deps="mmal"
2841 mpeg2_mediacodec_decoder_deps="mediacodec"
2842 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel"
2843 mpeg2_qsv_encoder_select="qsvenc"
2844 mpeg2_vaapi_encoder_deps="VAEncPictureParameterBufferMPEG2"
2845 mpeg2_vaapi_encoder_select="cbs_mpeg2 vaapi_encode"
2846 mpeg2_v4l2m2m_decoder_deps="v4l2_m2m mpeg2_v4l2_m2m"
2847 mpeg4_crystalhd_decoder_select="crystalhd"
2848 mpeg4_cuvid_decoder_deps="cuvid"
2849 mpeg4_mediacodec_decoder_deps="mediacodec"
2850 mpeg4_mmal_decoder_deps="mmal"
2851 mpeg4_omx_encoder_deps="omx"
2852 mpeg4_v4l2m2m_decoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
2853 mpeg4_v4l2m2m_encoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
2854 msmpeg4_crystalhd_decoder_select="crystalhd"
2855 nvenc_h264_encoder_select="h264_nvenc_encoder"
2856 nvenc_hevc_encoder_select="hevc_nvenc_encoder"
2857 vc1_crystalhd_decoder_select="crystalhd"
2858 vc1_cuvid_decoder_deps="cuvid"
2859 vc1_mmal_decoder_deps="mmal"
2860 vc1_qsv_decoder_select="qsvdec vc1_qsv_hwaccel vc1_parser"
2861 vc1_v4l2m2m_decoder_deps="v4l2_m2m vc1_v4l2_m2m"
2862 vp8_cuvid_decoder_deps="cuvid"
2863 vp8_mediacodec_decoder_deps="mediacodec"
2864 vp8_qsv_decoder_select="qsvdec vp8_qsv_hwaccel vp8_parser"
2865 vp8_rkmpp_decoder_deps="rkmpp"
2866 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
2867 vp8_vaapi_encoder_select="vaapi_encode"
2868 vp8_v4l2m2m_decoder_deps="v4l2_m2m vp8_v4l2_m2m"
2869 vp8_v4l2m2m_encoder_deps="v4l2_m2m vp8_v4l2_m2m"
2870 vp9_cuvid_decoder_deps="cuvid"
2871 vp9_mediacodec_decoder_deps="mediacodec"
2872 vp9_rkmpp_decoder_deps="rkmpp"
2873 vp9_vaapi_encoder_deps="VAEncPictureParameterBufferVP9"
2874 vp9_vaapi_encoder_select="vaapi_encode"
2875 vp9_v4l2m2m_decoder_deps="v4l2_m2m vp9_v4l2_m2m"
2876 wmv3_crystalhd_decoder_select="crystalhd"
2877
2878 # parsers
2879 aac_parser_select="adts_header"
2880 h264_parser_select="golomb h264dsp h264parse"
2881 hevc_parser_select="hevcparse"
2882 mpegaudio_parser_select="mpegaudioheader"
2883 mpegvideo_parser_select="mpegvideo"
2884 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
2885 vc1_parser_select="vc1dsp"
2886
2887 # bitstream_filters
2888 aac_adtstoasc_bsf_select="adts_header"
2889 h264_metadata_bsf_select="cbs_h264"
2890 h264_redundant_pps_bsf_select="cbs_h264"
2891 hevc_metadata_bsf_select="cbs_h265"
2892 mjpeg2jpeg_bsf_select="jpegtables"
2893 mpeg2_metadata_bsf_select="cbs_mpeg2"
2894 trace_headers_bsf_select="cbs_h264 cbs_h265 cbs_mpeg2"
2895
2896 # external libraries
2897 aac_at_decoder_deps="audiotoolbox"
2898 ac3_at_decoder_deps="audiotoolbox"
2899 ac3_at_decoder_select="ac3_parser"
2900 adpcm_ima_qt_at_decoder_deps="audiotoolbox"
2901 alac_at_decoder_deps="audiotoolbox"
2902 amr_nb_at_decoder_deps="audiotoolbox"
2903 avisynth_deps_any="libdl LoadLibrary"
2904 avisynth_demuxer_deps="avisynth"
2905 avisynth_demuxer_select="riffdec"
2906 eac3_at_decoder_deps="audiotoolbox"
2907 eac3_at_decoder_select="ac3_parser"
2908 gsm_ms_at_decoder_deps="audiotoolbox"
2909 ilbc_at_decoder_deps="audiotoolbox"
2910 mp1_at_decoder_deps="audiotoolbox"
2911 mp2_at_decoder_deps="audiotoolbox"
2912 mp3_at_decoder_deps="audiotoolbox"
2913 mp1_at_decoder_select="mpegaudioheader"
2914 mp2_at_decoder_select="mpegaudioheader"
2915 mp3_at_decoder_select="mpegaudioheader"
2916 pcm_alaw_at_decoder_deps="audiotoolbox"
2917 pcm_mulaw_at_decoder_deps="audiotoolbox"
2918 qdmc_at_decoder_deps="audiotoolbox"
2919 qdm2_at_decoder_deps="audiotoolbox"
2920 aac_at_encoder_deps="audiotoolbox"
2921 aac_at_encoder_select="audio_frame_queue"
2922 alac_at_encoder_deps="audiotoolbox"
2923 alac_at_encoder_select="audio_frame_queue"
2924 ilbc_at_encoder_deps="audiotoolbox"
2925 ilbc_at_encoder_select="audio_frame_queue"
2926 pcm_alaw_at_encoder_deps="audiotoolbox"
2927 pcm_alaw_at_encoder_select="audio_frame_queue"
2928 pcm_mulaw_at_encoder_deps="audiotoolbox"
2929 pcm_mulaw_at_encoder_select="audio_frame_queue"
2930 chromaprint_muxer_deps="chromaprint"
2931 h264_videotoolbox_encoder_deps="pthreads"
2932 h264_videotoolbox_encoder_select="videotoolbox_encoder"
2933 hevc_videotoolbox_encoder_deps="pthreads"
2934 hevc_videotoolbox_encoder_select="videotoolbox_encoder"
2935 libcelt_decoder_deps="libcelt"
2936 libfdk_aac_decoder_deps="libfdk_aac"
2937 libfdk_aac_encoder_deps="libfdk_aac"
2938 libfdk_aac_encoder_select="audio_frame_queue"
2939 libgme_demuxer_deps="libgme"
2940 libgsm_decoder_deps="libgsm"
2941 libgsm_encoder_deps="libgsm"
2942 libgsm_ms_decoder_deps="libgsm"
2943 libgsm_ms_encoder_deps="libgsm"
2944 libilbc_decoder_deps="libilbc"
2945 libilbc_encoder_deps="libilbc"
2946 libkvazaar_encoder_deps="libkvazaar"
2947 libmodplug_demuxer_deps="libmodplug"
2948 libmp3lame_encoder_deps="libmp3lame"
2949 libmp3lame_encoder_select="audio_frame_queue mpegaudioheader"
2950 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2951 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2952 libopencore_amrnb_encoder_select="audio_frame_queue"
2953 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2954 libopenh264_decoder_deps="libopenh264"
2955 libopenh264_decoder_select="h264_mp4toannexb_bsf"
2956 libopenh264_encoder_deps="libopenh264"
2957 libopenjpeg_decoder_deps="libopenjpeg"
2958 libopenjpeg_encoder_deps="libopenjpeg"
2959 libopenmpt_demuxer_deps="libopenmpt"
2960 libopus_decoder_deps="libopus"
2961 libopus_encoder_deps="libopus"
2962 libopus_encoder_select="audio_frame_queue"
2963 librsvg_decoder_deps="librsvg"
2964 libshine_encoder_deps="libshine"
2965 libshine_encoder_select="audio_frame_queue"
2966 libspeex_decoder_deps="libspeex"
2967 libspeex_encoder_deps="libspeex"
2968 libspeex_encoder_select="audio_frame_queue"
2969 libtheora_encoder_deps="libtheora"
2970 libtwolame_encoder_deps="libtwolame"
2971 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2972 libvorbis_decoder_deps="libvorbis"
2973 libvorbis_encoder_deps="libvorbis libvorbisenc"
2974 libvorbis_encoder_select="audio_frame_queue"
2975 libvpx_vp8_decoder_deps="libvpx"
2976 libvpx_vp8_encoder_deps="libvpx"
2977 libvpx_vp9_decoder_deps="libvpx"
2978 libvpx_vp9_encoder_deps="libvpx"
2979 libwavpack_encoder_deps="libwavpack"
2980 libwavpack_encoder_select="audio_frame_queue"
2981 libwebp_encoder_deps="libwebp"
2982 libwebp_anim_encoder_deps="libwebp"
2983 libx262_encoder_deps="libx262"
2984 libx264_encoder_deps="libx264"
2985 libx264rgb_encoder_deps="libx264 x264_csp_bgr"
2986 libx264rgb_encoder_select="libx264_encoder"
2987 libx265_encoder_deps="libx265"
2988 libxavs_encoder_deps="libxavs"
2989 libxvid_encoder_deps="libxvid"
2990 libzvbi_teletext_decoder_deps="libzvbi"
2991 videotoolbox_suggest="coreservices"
2992 videotoolbox_deps="corefoundation coremedia corevideo"
2993 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
2994
2995 # demuxers / muxers
2996 ac3_demuxer_select="ac3_parser"
2997 aiff_muxer_select="iso_media"
2998 asf_demuxer_select="riffdec"
2999 asf_o_demuxer_select="riffdec"
3000 asf_muxer_select="riffenc"
3001 asf_stream_muxer_select="asf_muxer"
3002 avi_demuxer_select="iso_media riffdec exif"
3003 avi_muxer_select="riffenc"
3004 caf_demuxer_select="iso_media riffdec"
3005 caf_muxer_select="iso_media"
3006 dash_muxer_select="mp4_muxer"
3007 dash_demuxer_deps="libxml2"
3008 dirac_demuxer_select="dirac_parser"
3009 dts_demuxer_select="dca_parser"
3010 dtshd_demuxer_select="dca_parser"
3011 dv_demuxer_select="dvprofile"
3012 dv_muxer_select="dvprofile"
3013 dxa_demuxer_select="riffdec"
3014 eac3_demuxer_select="ac3_parser"
3015 f4v_muxer_select="mov_muxer"
3016 fifo_muxer_deps="threads"
3017 flac_demuxer_select="flac_parser"
3018 hds_muxer_select="flv_muxer"
3019 hls_muxer_select="mpegts_muxer"
3020 hls_muxer_suggest="gcrypt openssl"
3021 image2_alias_pix_demuxer_select="image2_demuxer"
3022 image2_brender_pix_demuxer_select="image2_demuxer"
3023 ipod_muxer_select="mov_muxer"
3024 ismv_muxer_select="mov_muxer"
3025 matroska_audio_muxer_select="matroska_muxer"
3026 matroska_demuxer_select="iso_media riffdec"
3027 matroska_demuxer_suggest="bzlib lzo zlib"
3028 matroska_muxer_select="iso_media riffenc"
3029 mmf_muxer_select="riffenc"
3030 mov_demuxer_select="iso_media riffdec"
3031 mov_demuxer_suggest="zlib"
3032 mov_muxer_select="iso_media riffenc rtpenc_chain"
3033 mp3_demuxer_select="mpegaudio_parser"
3034 mp3_muxer_select="mpegaudioheader"
3035 mp4_muxer_select="mov_muxer"
3036 mpegts_demuxer_select="iso_media"
3037 mpegts_muxer_select="adts_muxer latm_muxer"
3038 mpegtsraw_demuxer_select="mpegts_demuxer"
3039 mxf_d10_muxer_select="mxf_muxer"
3040 mxf_opatom_muxer_select="mxf_muxer"
3041 nut_muxer_select="riffenc"
3042 nuv_demuxer_select="riffdec"
3043 oga_muxer_select="ogg_muxer"
3044 ogg_demuxer_select="dirac_parse"
3045 ogv_muxer_select="ogg_muxer"
3046 opus_muxer_select="ogg_muxer"
3047 psp_muxer_select="mov_muxer"
3048 rtp_demuxer_select="sdp_demuxer"
3049 rtp_muxer_select="golomb"
3050 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
3051 rtsp_demuxer_select="http_protocol rtpdec"
3052 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
3053 sap_demuxer_select="sdp_demuxer"
3054 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
3055 sdp_demuxer_select="rtpdec"
3056 smoothstreaming_muxer_select="ismv_muxer"
3057 spdif_demuxer_select="adts_header"
3058 spdif_muxer_select="adts_header"
3059 spx_muxer_select="ogg_muxer"
3060 swf_demuxer_suggest="zlib"
3061 tak_demuxer_select="tak_parser"
3062 tg2_muxer_select="mov_muxer"
3063 tgp_muxer_select="mov_muxer"
3064 vobsub_demuxer_select="mpegps_demuxer"
3065 w64_demuxer_select="wav_demuxer"
3066 w64_muxer_select="wav_muxer"
3067 wav_demuxer_select="riffdec"
3068 wav_muxer_select="riffenc"
3069 webm_muxer_select="iso_media riffenc"
3070 webm_dash_manifest_demuxer_select="matroska_demuxer"
3071 wtv_demuxer_select="mpegts_demuxer riffdec"
3072 wtv_muxer_select="mpegts_muxer riffenc"
3073 xmv_demuxer_select="riffdec"
3074 xwma_demuxer_select="riffdec"
3075
3076 # indevs / outdevs
3077 alsa_indev_deps="alsa"
3078 alsa_outdev_deps="alsa"
3079 avfoundation_indev_deps="avfoundation corevideo coremedia pthreads"
3080 avfoundation_indev_suggest="coregraphics applicationservices"
3081 avfoundation_indev_extralibs="-framework Foundation"
3082 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
3083 caca_outdev_deps="libcaca"
3084 decklink_deps_any="libdl LoadLibrary"
3085 decklink_indev_deps="decklink threads"
3086 decklink_indev_extralibs="-lstdc++"
3087 decklink_outdev_deps="decklink threads"
3088 decklink_outdev_extralibs="-lstdc++"
3089 libndi_newtek_indev_deps="libndi_newtek"
3090 libndi_newtek_indev_extralibs="-lndi"
3091 libndi_newtek_outdev_deps="libndi_newtek"
3092 libndi_newtek_outdev_extralibs="-lndi"
3093 dshow_indev_deps="IBaseFilter"
3094 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
3095 fbdev_indev_deps="linux_fb_h"
3096 fbdev_outdev_deps="linux_fb_h"
3097 gdigrab_indev_deps="CreateDIBSection"
3098 gdigrab_indev_extralibs="-lgdi32"
3099 gdigrab_indev_select="bmp_decoder"
3100 iec61883_indev_deps="libiec61883"
3101 jack_indev_deps="libjack"
3102 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
3103 kmsgrab_indev_deps="libdrm"
3104 lavfi_indev_deps="avfilter"
3105 libcdio_indev_deps="libcdio"
3106 libdc1394_indev_deps="libdc1394"
3107 openal_indev_deps="openal"
3108 opengl_outdev_deps="opengl"
3109 oss_indev_deps_any="sys_soundcard_h"
3110 oss_outdev_deps_any="sys_soundcard_h"
3111 pulse_indev_deps="libpulse"
3112 pulse_outdev_deps="libpulse"
3113 sdl2_outdev_deps="sdl2"
3114 sndio_indev_deps="sndio"
3115 sndio_outdev_deps="sndio"
3116 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
3117 v4l2_indev_suggest="libv4l2"
3118 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
3119 v4l2_outdev_suggest="libv4l2"
3120 vfwcap_indev_deps="vfw32 vfwcap_defines"
3121 xcbgrab_indev_deps="libxcb"
3122 xcbgrab_indev_suggest="libxcb_shm libxcb_shape libxcb_xfixes"
3123 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
3124 xv_outdev_extralibs="-lXv -lX11 -lXext"
3125
3126 # protocols
3127 async_protocol_deps="threads"
3128 bluray_protocol_deps="libbluray"
3129 ffrtmpcrypt_protocol_conflict="librtmp_protocol"
3130 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
3131 ffrtmpcrypt_protocol_select="tcp_protocol"
3132 ffrtmphttp_protocol_conflict="librtmp_protocol"
3133 ffrtmphttp_protocol_select="http_protocol"
3134 ftp_protocol_select="tcp_protocol"
3135 gopher_protocol_select="network"
3136 http_protocol_select="tcp_protocol"
3137 http_protocol_suggest="zlib"
3138 httpproxy_protocol_select="tcp_protocol"
3139 httpproxy_protocol_suggest="zlib"
3140 https_protocol_select="tls_protocol"
3141 https_protocol_suggest="zlib"
3142 icecast_protocol_select="http_protocol"
3143 librtmp_protocol_deps="librtmp"
3144 librtmpe_protocol_deps="librtmp"
3145 librtmps_protocol_deps="librtmp"
3146 librtmpt_protocol_deps="librtmp"
3147 librtmpte_protocol_deps="librtmp"
3148 libsmbclient_protocol_deps="libsmbclient gplv3"
3149 libssh_protocol_deps="libssh"
3150 mmsh_protocol_select="http_protocol"
3151 mmst_protocol_select="network"
3152 rtmp_protocol_conflict="librtmp_protocol"
3153 rtmp_protocol_select="tcp_protocol"
3154 rtmp_protocol_suggest="zlib"
3155 rtmpe_protocol_select="ffrtmpcrypt_protocol"
3156 rtmpe_protocol_suggest="zlib"
3157 rtmps_protocol_conflict="librtmp_protocol"
3158 rtmps_protocol_select="tls_protocol"
3159 rtmps_protocol_suggest="zlib"
3160 rtmpt_protocol_select="ffrtmphttp_protocol"
3161 rtmpt_protocol_suggest="zlib"
3162 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
3163 rtmpte_protocol_suggest="zlib"
3164 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
3165 rtmpts_protocol_suggest="zlib"
3166 rtp_protocol_select="udp_protocol"
3167 schannel_conflict="openssl gnutls"
3168 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
3169 sctp_protocol_select="network"
3170 securetransport_conflict="openssl gnutls"
3171 srtp_protocol_select="rtp_protocol srtp"
3172 tcp_protocol_select="network"
3173 tls_protocol_deps_any="gnutls openssl schannel securetransport"
3174 tls_protocol_select="tcp_protocol"
3175 udp_protocol_select="network"
3176 udplite_protocol_select="network"
3177 unix_protocol_deps="sys_un_h"
3178 unix_protocol_select="network"
3179
3180 # filters
3181 afftfilt_filter_deps="avcodec"
3182 afftfilt_filter_select="fft"
3183 afir_filter_deps="avcodec"
3184 afir_filter_select="fft"
3185 amovie_filter_deps="avcodec avformat"
3186 aresample_filter_deps="swresample"
3187 ass_filter_deps="libass"
3188 atempo_filter_deps="avcodec"
3189 atempo_filter_select="rdft"
3190 azmq_filter_deps="libzmq"
3191 blackframe_filter_deps="gpl"
3192 boxblur_filter_deps="gpl"
3193 bs2b_filter_deps="libbs2b"
3194 colormatrix_filter_deps="gpl"
3195 coreimage_filter_deps="coreimage appkit"
3196 coreimage_filter_extralibs="-framework OpenGL"
3197 coreimagesrc_filter_deps="coreimage appkit"
3198 coreimagesrc_filter_extralibs="-framework OpenGL"
3199 cover_rect_filter_deps="avcodec avformat gpl"
3200 cropdetect_filter_deps="gpl"
3201 deinterlace_qsv_filter_deps="libmfx"
3202 deinterlace_vaapi_filter_deps="vaapi"
3203 delogo_filter_deps="gpl"
3204 deshake_filter_select="pixelutils"
3205 deshake_filter_suggest="opencl"
3206 drawtext_filter_deps="libfreetype"
3207 drawtext_filter_suggest="libfontconfig libfribidi"
3208 elbg_filter_deps="avcodec"
3209 eq_filter_deps="gpl"
3210 fftfilt_filter_deps="avcodec"
3211 fftfilt_filter_select="rdft"
3212 find_rect_filter_deps="avcodec avformat gpl"
3213 firequalizer_filter_deps="avcodec"
3214 firequalizer_filter_select="rdft"
3215 flite_filter_deps="libflite"
3216 framerate_filter_select="pixelutils"
3217 frei0r_filter_deps="frei0r libdl"
3218 frei0r_src_filter_deps="frei0r libdl"
3219 fspp_filter_deps="gpl"
3220 geq_filter_deps="gpl"
3221 histeq_filter_deps="gpl"
3222 hqdn3d_filter_deps="gpl"
3223 interlace_filter_deps="gpl"
3224 kerndeint_filter_deps="gpl"
3225 ladspa_filter_deps="ladspa libdl"
3226 mcdeint_filter_deps="avcodec gpl"
3227 movie_filter_deps="avcodec avformat"
3228 mpdecimate_filter_deps="gpl"
3229 mpdecimate_filter_select="pixelutils"
3230 mptestsrc_filter_deps="gpl"
3231 negate_filter_deps="lut_filter"
3232 nnedi_filter_deps="gpl"
3233 ocr_filter_deps="libtesseract"
3234 ocv_filter_deps="libopencv"
3235 overlay_qsv_filter_deps="libmfx"
3236 overlay_qsv_filter_select="qsvvpp"
3237 owdenoise_filter_deps="gpl"
3238 pan_filter_deps="swresample"
3239 perspective_filter_deps="gpl"
3240 phase_filter_deps="gpl"
3241 pp7_filter_deps="gpl"
3242 pp_filter_deps="gpl postproc"
3243 pullup_filter_deps="gpl"
3244 removelogo_filter_deps="avcodec avformat swscale"
3245 repeatfields_filter_deps="gpl"
3246 resample_filter_deps="avresample"
3247 rubberband_filter_deps="librubberband"
3248 sab_filter_deps="gpl swscale"
3249 scale2ref_filter_deps="swscale"
3250 scale_filter_deps="swscale"
3251 scale_qsv_filter_deps="libmfx"
3252 select_filter_select="pixelutils"
3253 showcqt_filter_deps="avcodec avformat swscale"
3254 showcqt_filter_suggest="libfontconfig libfreetype"
3255 showcqt_filter_select="fft"
3256 showfreqs_filter_deps="avcodec"
3257 showfreqs_filter_select="fft"
3258 showspectrum_filter_deps="avcodec"
3259 showspectrum_filter_select="fft"
3260 showspectrumpic_filter_deps="avcodec"
3261 showspectrumpic_filter_select="fft"
3262 signature_filter_deps="gpl avcodec avformat"
3263 smartblur_filter_deps="gpl swscale"
3264 sofalizer_filter_deps="libmysofa avcodec"
3265 sofalizer_filter_select="fft"
3266 spectrumsynth_filter_deps="avcodec"
3267 spectrumsynth_filter_select="fft"
3268 spp_filter_deps="gpl avcodec"
3269 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3270 stereo3d_filter_deps="gpl"
3271 subtitles_filter_deps="avformat avcodec libass"
3272 super2xsai_filter_deps="gpl"
3273 pixfmts_super2xsai_test_deps="super2xsai_filter"
3274 tinterlace_filter_deps="gpl"
3275 tinterlace_merge_test_deps="tinterlace_filter"
3276 tinterlace_pad_test_deps="tinterlace_filter"
3277 tonemap_filter_deps="const_nan"
3278 uspp_filter_deps="gpl avcodec"
3279 unsharp_filter_suggest="opencl"
3280 vaguedenoiser_filter_deps="gpl"
3281 vidstabdetect_filter_deps="libvidstab"
3282 vidstabtransform_filter_deps="libvidstab"
3283 libvmaf_filter_deps="libvmaf"
3284 zmq_filter_deps="libzmq"
3285 zoompan_filter_deps="swscale"
3286 zscale_filter_deps="libzimg const_nan"
3287 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3288 vpp_qsv_filter_deps="libmfx"
3289 vpp_qsv_filter_select="qsvvpp"
3290
3291 # examples
3292 avio_dir_cmd_deps="avformat avutil"
3293 avio_reading_deps="avformat avcodec avutil"
3294 decode_audio_example_deps="avcodec avutil"
3295 decode_video_example_deps="avcodec avutil"
3296 demuxing_decoding_example_deps="avcodec avformat avutil"
3297 encode_audio_example_deps="avcodec avutil"
3298 encode_video_example_deps="avcodec avutil"
3299 extract_mvs_example_deps="avcodec avformat avutil"
3300 filter_audio_example_deps="avfilter avutil"
3301 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3302 filtering_video_example_deps="avfilter avcodec avformat avutil"
3303 http_multiclient_example_deps="avformat avutil fork"
3304 hw_decode_example_deps="avcodec avformat avutil"
3305 metadata_example_deps="avformat avutil"
3306 muxing_example_deps="avcodec avformat avutil swscale"
3307 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
3308 remuxing_example_deps="avcodec avformat avutil"
3309 resampling_audio_example_deps="avutil swresample"
3310 scaling_video_example_deps="avutil swscale"
3311 transcode_aac_example_deps="avcodec avformat swresample"
3312 transcoding_example_deps="avfilter avcodec avformat avutil"
3313
3314 # EXTRALIBS_LIST
3315 cpu_init_extralibs="pthreads_extralibs"
3316 cws2fws_extralibs="zlib_extralibs"
3317
3318 # libraries, in linking order
3319 avcodec_deps="avutil"
3320 avcodec_suggest="libm"
3321 avcodec_select="null_bsf"
3322 avdevice_deps="avformat avcodec avutil"
3323 avdevice_suggest="libm"
3324 avfilter_deps="avutil"
3325 avfilter_suggest="libm"
3326 avformat_deps="avcodec avutil"
3327 avformat_suggest="libm network zlib"
3328 avresample_deps="avutil"
3329 avresample_suggest="libm"
3330 avutil_suggest="clock_gettime cuda libm libdrm libmfx opencl user32 vaapi videotoolbox corefoundation corevideo coremedia wincrypt"
3331 postproc_deps="avutil gpl"
3332 postproc_suggest="libm"
3333 swresample_deps="avutil"
3334 swresample_suggest="libm libsoxr"
3335 swscale_deps="avutil"
3336 swscale_suggest="libm"
3337
3338 avcodec_extralibs="pthreads_extralibs iconv_extralibs"
3339 avfilter_extralibs="pthreads_extralibs"
3340 avutil_extralibs="d3d11va_extralibs nanosleep_extralibs pthreads_extralibs vaapi_drm_extralibs vaapi_x11_extralibs vdpau_x11_extralibs"
3341
3342 # programs
3343 ffmpeg_deps="avcodec avfilter avformat swresample"
3344 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3345                null_filter
3346                trim_filter"
3347 ffmpeg_suggest="ole32 psapi shell32"
3348 ffplay_deps="avcodec avformat swscale swresample sdl2"
3349 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3350 ffplay_suggest="shell32"
3351 ffprobe_deps="avcodec avformat"
3352 ffprobe_suggest="shell32"
3353 ffserver_deps="avformat fork sarestart"
3354 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
3355
3356 # documentation
3357 podpages_deps="perl"
3358 manpages_deps="perl pod2man"
3359 htmlpages_deps="perl"
3360 htmlpages_deps_any="makeinfo_html texi2html"
3361 txtpages_deps="perl makeinfo"
3362 doc_deps_any="manpages htmlpages podpages txtpages"
3363
3364 # default parameters
3365
3366 logfile="ffbuild/config.log"
3367
3368 # installation paths
3369 prefix_default="/usr/local"
3370 bindir_default='${prefix}/bin'
3371 datadir_default='${prefix}/share/ffmpeg'
3372 docdir_default='${prefix}/share/doc/ffmpeg'
3373 incdir_default='${prefix}/include'
3374 libdir_default='${prefix}/lib'
3375 mandir_default='${prefix}/share/man'
3376
3377 # toolchain
3378 ar_default="ar"
3379 cc_default="gcc"
3380 cxx_default="g++"
3381 host_cc_default="gcc"
3382 doxygen_default="doxygen"
3383 install="install"
3384 ln_s_default="ln -s -f"
3385 nm_default="nm -g"
3386 pkg_config_default=pkg-config
3387 ranlib_default="ranlib"
3388 strip_default="strip"
3389 version_script='--version-script'
3390 objformat="elf32"
3391 x86asmexe_default="nasm"
3392 windres_default="windres"
3393 nvcc_default="nvcc"
3394 nvccflags_default="-gencode arch=compute_30,code=sm_30 -O2"
3395 striptype="direct"
3396
3397 # OS
3398 target_os_default=$(tolower $(uname -s))
3399 host_os=$target_os_default
3400
3401 # machine
3402 if test "$target_os_default" = aix; then
3403     arch_default=$(uname -p)
3404     strip_default="strip -X32_64"
3405 else
3406     arch_default=$(uname -m)
3407 fi
3408 cpu="generic"
3409 intrinsics="none"
3410
3411 # configurable options
3412 enable $PROGRAM_LIST
3413 enable $DOCUMENT_LIST
3414 enable $EXAMPLE_LIST
3415 enable $(filter_out avresample $LIBRARY_LIST)
3416 enable stripping
3417
3418 enable asm
3419 enable debug
3420 enable doc
3421 enable faan faandct faanidct
3422 enable optimizations
3423 enable runtime_cpudetect
3424 enable safe_bitstream_reader
3425 enable static
3426 enable swscale_alpha
3427 enable valgrind_backtrace
3428
3429 sws_max_filter_size_default=256
3430 set_default sws_max_filter_size
3431
3432 # internal components are enabled by default
3433 enable $EXTRALIBS_LIST
3434
3435 # Avoid external, non-system, libraries getting enabled by dependency resolution
3436 disable $EXTERNAL_LIBRARY_LIST $HWACCEL_LIBRARY_LIST
3437
3438 # build settings
3439 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3440 LIBPREF="lib"
3441 LIBSUF=".a"
3442 FULLNAME='$(NAME)$(BUILDSUF)'
3443 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3444 SLIBPREF="lib"
3445 SLIBSUF=".so"
3446 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3447 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3448 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3449 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3450 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3451 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3452 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
3453
3454 asflags_filter=echo
3455 cflags_filter=echo
3456 ldflags_filter=echo
3457
3458 AS_C='-c'
3459 AS_O='-o $@'
3460 CC_C='-c'
3461 CC_E='-E -o $@'
3462 CC_O='-o $@'
3463 CXX_C='-c'
3464 CXX_O='-o $@'
3465 OBJCC_C='-c'
3466 OBJCC_E='-E -o $@'
3467 OBJCC_O='-o $@'
3468 X86ASM_O='-o $@'
3469 LD_O='-o $@'
3470 LD_LIB='-l%'
3471 LD_PATH='-L'
3472 HOSTCC_C='-c'
3473 HOSTCC_E='-E -o $@'
3474 HOSTCC_O='-o $@'
3475 HOSTLD_O='-o $@'
3476 NVCC_C='-c'
3477 NVCC_O='-o $@'
3478
3479 host_extralibs='-lm'
3480 host_cflags_filter=echo
3481 host_ldflags_filter=echo
3482
3483 target_path='$(CURDIR)'
3484
3485 # since the object filename is not given with the -MM flag, the compiler
3486 # is only able to print the basename, and we must add the path ourselves
3487 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3488 DEPFLAGS='-MM'
3489
3490 mkdir -p ffbuild
3491
3492 # find source path
3493 if test -f configure; then
3494     source_path=.
3495 else
3496     source_path=$(cd $(dirname "$0"); pwd)
3497     case "$source_path" in
3498         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3499     esac
3500     test -e "$source_path/config.h" &&
3501         die "Out of tree builds are impossible with config.h in source dir."
3502 fi
3503
3504 for v in "$@"; do
3505     r=${v#*=}
3506     l=${v%"$r"}
3507     r=$(sh_quote "$r")
3508     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3509 done
3510
3511 find_things(){
3512     thing=$1
3513     pattern=$2
3514     file=$source_path/$3
3515     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
3516 }
3517
3518 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
3519 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
3520 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
3521 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
3522 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
3523 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
3524 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
3525 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
3526 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
3527
3528 find_things_extern(){
3529     thing=$1
3530     pattern=$2
3531     file=$source_path/$3
3532     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
3533 }
3534
3535 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3536 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3537
3538 AVCODEC_COMPONENTS_LIST="
3539     $BSF_LIST
3540     $DECODER_LIST
3541     $ENCODER_LIST
3542     $HWACCEL_LIST
3543     $PARSER_LIST
3544 "
3545
3546 AVDEVICE_COMPONENTS_LIST="
3547     $INDEV_LIST
3548     $OUTDEV_LIST
3549 "
3550
3551 AVFILTER_COMPONENTS_LIST="
3552     $FILTER_LIST
3553 "
3554
3555 AVFORMAT_COMPONENTS_LIST="
3556     $DEMUXER_LIST
3557     $MUXER_LIST
3558     $PROTOCOL_LIST
3559 "
3560
3561 ALL_COMPONENTS="
3562     $AVCODEC_COMPONENTS_LIST
3563     $AVDEVICE_COMPONENTS_LIST
3564     $AVFILTER_COMPONENTS_LIST
3565     $AVFORMAT_COMPONENTS_LIST
3566 "
3567
3568 for n in $COMPONENT_LIST; do
3569     v=$(toupper ${n%s})_LIST
3570     eval enable \$$v
3571     eval ${n}_if_any="\$$v"
3572 done
3573
3574 enable $ARCH_EXT_LIST
3575
3576 die_unknown(){
3577     echo "Unknown option \"$1\"."
3578     echo "See $0 --help for available options."
3579     exit 1
3580 }
3581
3582 print_in_columns() {
3583     cols=$(expr $ncols / 24)
3584     cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
3585 }
3586
3587 show_list() {
3588     suffix=_$1
3589     shift
3590     echo $* | sed s/$suffix//g | print_in_columns
3591     exit 0
3592 }
3593
3594 rand_list(){
3595     IFS=', '
3596     set -- $*
3597     unset IFS
3598     for thing; do
3599         comp=${thing%:*}
3600         prob=${thing#$comp}
3601         prob=${prob#:}
3602         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3603         echo "prob ${prob:-0.5}"
3604         printf '%s\n' $comp
3605     done
3606 }
3607
3608 do_random(){
3609     action=$1
3610     shift
3611     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3612     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3613 }
3614
3615 for opt do
3616     optval="${opt#*=}"
3617     case "$opt" in
3618         --extra-ldflags=*)
3619             add_ldflags $optval
3620         ;;
3621         --extra-ldexeflags=*)
3622             add_ldexeflags $optval
3623         ;;
3624         --extra-ldsoflags=*)
3625             add_ldsoflags $optval
3626         ;;
3627         --extra-ldlibflags=*)
3628             warn "The --extra-ldlibflags option is only provided for compatibility and will be\n"\
3629                  "removed in the future. Use --extra-ldsoflags instead."
3630             add_ldsoflags $optval
3631         ;;
3632         --extra-libs=*)
3633             add_extralibs $optval
3634         ;;
3635         --disable-devices)
3636             disable $INDEV_LIST $OUTDEV_LIST
3637         ;;
3638         --enable-debug=*)
3639             debuglevel="$optval"
3640         ;;
3641         --disable-programs)
3642             disable $PROGRAM_LIST
3643         ;;
3644         --disable-everything)
3645             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3646         ;;
3647         --disable-all)
3648             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3649             disable $LIBRARY_LIST $PROGRAM_LIST doc
3650             enable avutil
3651         ;;
3652         --enable-random|--disable-random)
3653             action=${opt%%-random}
3654             do_random ${action#--} $COMPONENT_LIST
3655         ;;
3656         --enable-random=*|--disable-random=*)
3657             action=${opt%%-random=*}
3658             do_random ${action#--} $optval
3659         ;;
3660         --enable-sdl)
3661             enable sdl2
3662         ;;
3663         --enable-*=*|--disable-*=*)
3664             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3665             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3666             eval list=\$$(toupper $thing)_LIST
3667             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3668             list=$(filter "$name" $list)
3669             [ "$list" = "" ] && warn "Option $opt did not match anything"
3670             $action $list
3671         ;;
3672         --enable-yasm|--disable-yasm)
3673             warn "The ${opt} option is only provided for compatibility and will be\n"\
3674                  "removed in the future. Use --enable-x86asm / --disable-x86asm instead."
3675             test $opt = --enable-yasm && x86asm=yes || x86asm=no
3676         ;;
3677         --yasmexe=*)
3678             warn "The --yasmexe option is only provided for compatibility and will be\n"\
3679                  "removed in the future. Use --x86asmexe instead."
3680             x86asmexe="$optval"
3681         ;;
3682         --enable-?*|--disable-?*)
3683             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3684             if is_in $option $COMPONENT_LIST; then
3685                 test $action = disable && action=unset
3686                 eval $action \$$(toupper ${option%s})_LIST
3687             elif is_in $option $CMDLINE_SELECT; then
3688                 $action $option
3689             else
3690                 die_unknown $opt
3691             fi
3692         ;;
3693         --list-*)
3694             NAME="${opt#--list-}"
3695             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3696             NAME=${NAME%s}
3697             eval show_list $NAME \$$(toupper $NAME)_LIST
3698         ;;
3699         --help|-h) show_help
3700         ;;
3701         --quiet|-q) quiet=yes
3702         ;;
3703         --fatal-warnings) enable fatal_warnings
3704         ;;
3705         --libfuzzer=*)
3706             libfuzzer_path="$optval"
3707         ;;
3708         *)
3709             optname="${opt%%=*}"
3710             optname="${optname#--}"
3711             optname=$(echo "$optname" | sed 's/-/_/g')
3712             if is_in $optname $CMDLINE_SET; then
3713                 eval $optname='$optval'
3714             elif is_in $optname $CMDLINE_APPEND; then
3715                 append $optname "$optval"
3716             else
3717                 die_unknown $opt
3718             fi
3719         ;;
3720     esac
3721 done
3722
3723 for e in $env; do
3724     eval "export $e"
3725 done
3726
3727 if disabled autodetect; then
3728
3729     # Unless iconv is explicitely disabled by the user, we still want to probe
3730     # for the iconv from the libc.
3731     disabled iconv || enable libc_iconv
3732
3733     disable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3734     disable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3735 fi
3736 # Mark specifically enabled, but normally autodetected libraries as requested.
3737 for lib in $AUTODETECT_LIBS; do
3738     enabled $lib && request $lib
3739 done
3740 #TODO: switch to $AUTODETECT_LIBS when $THREADS_LIST is supported the same way
3741 enable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3742 enable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3743
3744 disabled logging && logfile=/dev/null
3745
3746 # command line configuration sanity checks
3747
3748 # we need to build at least one lib type
3749 if ! enabled_any static shared; then
3750     cat <<EOF
3751 At least one library type must be built.
3752 Specify --enable-static to build the static libraries or --enable-shared to
3753 build the shared libraries as well. To only build the shared libraries specify
3754 --disable-static in addition to --enable-shared.
3755 EOF
3756     exit 1
3757 fi
3758
3759 die_license_disabled() {
3760     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
3761 }
3762
3763 die_license_disabled_gpl() {
3764     enabled $1 || { enabled $v && die "$v is incompatible with the gpl and --enable-$1 is not specified."; }
3765 }
3766
3767 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3768 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3769
3770 enabled gpl && map "die_license_disabled_gpl nonfree" $EXTERNAL_LIBRARY_NONFREE_LIST
3771 map "die_license_disabled nonfree" $HWACCEL_LIBRARY_NONFREE_LIST
3772
3773 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3774
3775 enabled_all gnutls openssl &&
3776     die "GnuTLS and OpenSSL must not be enabled at the same time."
3777
3778 # Disable all the library-specific components if the library itself
3779 # is disabled, see AVCODEC_LIST and following _LIST variables.
3780
3781 disable_components(){
3782     disabled ${1} && disable $(
3783         eval components="\$$(toupper ${1})_COMPONENTS"
3784         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
3785     )
3786 }
3787
3788 map 'disable_components $v' $LIBRARY_LIST
3789
3790 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
3791 set >> $logfile
3792
3793 test -n "$valgrind" && toolchain="valgrind-memcheck"
3794
3795 enabled ossfuzz && {
3796     add_cflags  -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp -fno-omit-frame-pointer
3797     add_ldflags -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp
3798 }
3799
3800 case "$toolchain" in
3801     *-asan)
3802         cc_default="${toolchain%-asan}"
3803         add_cflags  -fsanitize=address
3804         add_ldflags -fsanitize=address
3805     ;;
3806     *-msan)
3807         cc_default="${toolchain%-msan}"
3808         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
3809         add_ldflags -fsanitize=memory
3810     ;;
3811     *-tsan)
3812         cc_default="${toolchain%-tsan}"
3813         add_cflags  -fsanitize=thread -fPIE
3814         add_ldflags -fsanitize=thread -pie
3815         case "$toolchain" in
3816             gcc-tsan)
3817                 add_cflags  -fPIC
3818                 add_ldflags -fPIC
3819                 ;;
3820         esac
3821     ;;
3822     *-usan)
3823         cc_default="${toolchain%-usan}"
3824         add_cflags  -fsanitize=undefined
3825         add_ldflags -fsanitize=undefined
3826     ;;
3827     valgrind-*)
3828         target_exec_default="valgrind"
3829         case "$toolchain" in
3830             valgrind-massif)
3831                 target_exec_args="--tool=massif --alloc-fn=av_malloc --alloc-fn=av_mallocz --alloc-fn=av_calloc --alloc-fn=av_fast_padded_malloc --alloc-fn=av_fast_malloc --alloc-fn=av_realloc_f --alloc-fn=av_fast_realloc --alloc-fn=av_realloc"
3832                 ;;
3833             valgrind-memcheck)
3834                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3835                 ;;
3836         esac
3837     ;;
3838     msvc)
3839         # Check whether the current MSVC version needs the C99 converter.
3840         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3841         # support enough of C99 to build ffmpeg. Default to the new
3842         # behaviour if the regexp was unable to match anything, since this
3843         # successfully parses the version number of existing supported
3844         # versions that require the converter (MSVC 2010 and 2012).
3845         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3846         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3847             cc_default="cl"
3848             cxx_default="cl"
3849         else
3850             cc_default="c99wrap cl"
3851             cxx_default="c99wrap cl"
3852         fi
3853         ld_default="$source_path/compat/windows/mslink"
3854         nm_default="dumpbin -symbols"
3855         ar_default="lib"
3856         case "$arch" in
3857         aarch64|arm64)
3858             as_default="armasm64"
3859             ;;
3860         arm*)
3861             as_default="armasm"
3862             ;;
3863         esac
3864         target_os_default="win32"
3865         # Use a relative path for TMPDIR. This makes sure all the
3866         # ffconf temp files are written with a relative path, avoiding
3867         # issues with msys/win32 path conversion for MSVC parameters
3868         # such as -Fo<file> or -out:<file>.
3869         TMPDIR=.
3870     ;;
3871     icl)
3872         cc_default="icl"
3873         ld_default="xilink"
3874         nm_default="dumpbin -symbols"
3875         ar_default="xilib"
3876         target_os_default="win32"
3877         TMPDIR=.
3878     ;;
3879     gcov)
3880         add_cflags  -fprofile-arcs -ftest-coverage
3881         add_ldflags -fprofile-arcs -ftest-coverage
3882     ;;
3883     llvm-cov)
3884         add_cflags -fprofile-arcs -ftest-coverage
3885         add_ldflags --coverage
3886     ;;
3887     hardened)
3888         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3889         add_cflags   -fno-strict-overflow -fstack-protector-all
3890         add_ldflags  -Wl,-z,relro -Wl,-z,now
3891         add_cflags   -fPIE
3892         add_ldexeflags -fPIE -pie
3893     ;;
3894     ?*)
3895         die "Unknown toolchain $toolchain"
3896     ;;
3897 esac
3898
3899 if test -n "$cross_prefix"; then
3900     test -n "$arch" && test -n "$target_os" ||
3901         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
3902     enable cross_compile
3903 fi
3904
3905 ar_default="${cross_prefix}${ar_default}"
3906 cc_default="${cross_prefix}${cc_default}"
3907 cxx_default="${cross_prefix}${cxx_default}"
3908 nm_default="${cross_prefix}${nm_default}"
3909 pkg_config_default="${cross_prefix}${pkg_config_default}"
3910 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
3911     ranlib_default="${cross_prefix}${ranlib_default} -D"
3912 else
3913     ranlib_default="${cross_prefix}${ranlib_default}"
3914 fi
3915 strip_default="${cross_prefix}${strip_default}"
3916 windres_default="${cross_prefix}${windres_default}"
3917
3918 sysinclude_default="${sysroot}/usr/include"
3919
3920 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3921     target_exec target_os x86asmexe nvcc
3922 enabled cross_compile || host_cc_default=$cc
3923 set_default host_cc
3924
3925 pkg_config_fail_message=""
3926 if ! $pkg_config --version >/dev/null 2>&1; then
3927     warn "$pkg_config not found, library detection may fail."
3928     pkg_config=false
3929 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
3930     pkg_config_fail_message="
3931 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
3932 fi
3933
3934 if test $doxygen != $doxygen_default && \
3935   ! $doxygen --version >/dev/null 2>&1; then
3936     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3937 fi
3938
3939 exesuf() {
3940     case $1 in
3941         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3942     esac
3943 }
3944
3945 EXESUF=$(exesuf $target_os)
3946 HOSTEXESUF=$(exesuf $host_os)
3947
3948 # set temporary file name
3949 : ${TMPDIR:=$TEMPDIR}
3950 : ${TMPDIR:=$TMP}
3951 : ${TMPDIR:=/tmp}
3952
3953 if [ -n "$tempprefix" ] ; then
3954     mktemp(){
3955         tmpname="$tempprefix.${HOSTNAME}.${UID}"
3956         echo "$tmpname"
3957         mkdir "$tmpname"
3958     }
3959 elif ! check_cmd mktemp -u XXXXXX; then
3960     # simple replacement for missing mktemp
3961     # NOT SAFE FOR GENERAL USE
3962     mktemp(){
3963         tmpname="${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3964         echo "$tmpname"
3965         mkdir "$tmpname"
3966     }
3967 fi
3968
3969 FFTMPDIR=$(mktemp -d "${TMPDIR}/ffconf.XXXXXXXX" 2> /dev/null) ||
3970     die "Unable to create temporary directory in $TMPDIR."
3971
3972 tmpfile(){
3973     tmp="${FFTMPDIR}/test"$2
3974     (set -C; exec > $tmp) 2> /dev/null ||
3975         die "Unable to create temporary file in $FFTMPDIR."
3976     eval $1=$tmp
3977 }
3978
3979 trap 'rm -rf -- "$FFTMPDIR"' EXIT
3980 trap 'exit 2' INT
3981
3982 tmpfile TMPASM .asm
3983 tmpfile TMPC   .c
3984 tmpfile TMPCPP .cpp
3985 tmpfile TMPE   $EXESUF
3986 tmpfile TMPH   .h
3987 tmpfile TMPM   .m
3988 tmpfile TMPO   .o
3989 tmpfile TMPS   .S
3990 tmpfile TMPSH  .sh
3991 tmpfile TMPV   .ver
3992
3993 unset -f mktemp
3994
3995 chmod +x $TMPE
3996
3997 # make sure we can execute files in $TMPDIR
3998 cat > $TMPSH 2>> $logfile <<EOF
3999 #! /bin/sh
4000 EOF
4001 chmod +x $TMPSH >> $logfile 2>&1
4002 if ! $TMPSH >> $logfile 2>&1; then
4003     cat <<EOF
4004 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
4005 variable to another directory and make sure that it is not mounted noexec.
4006 EOF
4007     die "Sanity test failed."
4008 fi
4009
4010 armasm_flags(){
4011     for flag; do
4012         case $flag in
4013             # Filter out MSVC cl.exe options from cflags that shouldn't
4014             # be passed to gas-preprocessor
4015             -M[TD]*)                                            ;;
4016             *)                  echo $flag                      ;;
4017         esac
4018    done
4019 }
4020
4021 cparser_flags(){
4022     for flag; do
4023         case $flag in
4024             -Wno-switch)             echo -Wno-switch-enum ;;
4025             -Wno-format-zero-length) ;;
4026             -Wdisabled-optimization) ;;
4027             -Wno-pointer-sign)       echo -Wno-other ;;
4028             *)                       echo $flag ;;
4029         esac
4030     done
4031 }
4032
4033 msvc_common_flags(){
4034     for flag; do
4035         case $flag in
4036             # In addition to specifying certain flags under the compiler
4037             # specific filters, they must be specified here as well or else the
4038             # generic catch all at the bottom will print the original flag.
4039             -Wall)                ;;
4040             -Wextra)              ;;
4041             -std=c99)             ;;
4042             # Common flags
4043             -fomit-frame-pointer) ;;
4044             -g)                   echo -Z7 ;;
4045             -fno-math-errno)      ;;
4046             -fno-common)          ;;
4047             -fno-signed-zeros)    ;;
4048             -fPIC)                ;;
4049             -mthumb)              ;;
4050             -march=*)             ;;
4051             -lz)                  echo zlib.lib ;;
4052             -lx264)               echo libx264.lib ;;
4053             -lstdc++)             ;;
4054             -l*)                  echo ${flag#-l}.lib ;;
4055             -LARGEADDRESSAWARE)   echo $flag ;;
4056             -L*)                  echo -libpath:${flag#-L} ;;
4057             *)                    echo $flag ;;
4058         esac
4059     done
4060 }
4061
4062 msvc_flags(){
4063     msvc_common_flags "$@"
4064     for flag; do
4065         case $flag in
4066             -Wall)                echo -W3 -wd4018 -wd4146 -wd4244 -wd4305     \
4067                                        -wd4554 ;;
4068             -Wextra)              echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
4069                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
4070                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
4071                                        -wd4307 \
4072                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
4073         esac
4074     done
4075 }
4076
4077 icl_flags(){
4078     msvc_common_flags "$@"
4079     for flag; do
4080         case $flag in
4081             # Despite what Intel's documentation says -Wall, which is supported
4082             # on Windows, does enable remarks so disable them here.
4083             -Wall)                echo $flag -Qdiag-disable:remark ;;
4084             -std=c99)             echo -Qstd=c99 ;;
4085             -flto)                echo -ipo ;;
4086         esac
4087     done
4088 }
4089
4090 icc_flags(){
4091     for flag; do
4092         case $flag in
4093             -flto)                echo -ipo ;;
4094             *)                    echo $flag ;;
4095         esac
4096     done
4097 }
4098
4099 suncc_flags(){
4100     for flag; do
4101         case $flag in
4102             -march=*|-mcpu=*)
4103                 case "${flag#*=}" in
4104                     native)                   echo -xtarget=native       ;;
4105                     v9|niagara)               echo -xarch=sparc          ;;
4106                     ultrasparc)               echo -xarch=sparcvis       ;;
4107                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
4108                     i586|pentium)             echo -xchip=pentium        ;;
4109                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
4110                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
4111                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
4112                     pentium4*)          echo -xtarget=pentium4           ;;
4113                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
4114                     *-sse3)             echo -xarch=sse3                 ;;
4115                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
4116                     bonnell)                   echo -xarch=ssse3         ;;
4117                     corei7|nehalem)            echo -xtarget=nehalem     ;;
4118                     westmere)                  echo -xtarget=westmere    ;;
4119                     silvermont)                echo -xarch=sse4_2        ;;
4120                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
4121                     core-avx*|ivybridge|haswell|broadwell|skylake*|knl)
4122                                                echo -xarch=avx           ;;
4123                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
4124                     btver1)                    echo -xarch=amdsse4a      ;;
4125                     btver2|bdver*|znver*)      echo -xarch=avx           ;;
4126                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
4127                     k8|opteron|athlon64|athlon-fx)
4128                                                echo -xarch=sse2a         ;;
4129                     athlon*)                   echo -xarch=pentium_proa  ;;
4130                 esac
4131                 ;;
4132             -std=c99)             echo -xc99              ;;
4133             -fomit-frame-pointer) echo -xregs=frameptr    ;;
4134             -fPIC)                echo -KPIC -xcode=pic32 ;;
4135             -W*,*)                echo $flag              ;;
4136             -f*-*|-W*|-mimpure-text)                      ;;
4137             -shared)              echo -G                 ;;
4138             *)                    echo $flag              ;;
4139         esac
4140     done
4141 }
4142
4143 probe_cc(){
4144     pfx=$1
4145     _cc=$2
4146     first=$3
4147
4148     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
4149     unset _ld_o _ldflags _ld_lib _ld_path
4150     unset _depflags _DEPCMD _DEPFLAGS
4151     _flags_filter=echo
4152
4153     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
4154         true # no-op to avoid reading stdin in following checks
4155     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
4156         _type=llvm_gcc
4157         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
4158         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
4159         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4160         _cflags_speed='-O3'
4161         _cflags_size='-Os'
4162     elif $_cc -v 2>&1 | grep -qi ^gcc; then
4163         _type=gcc
4164         gcc_version=$($_cc --version | head -n1)
4165         gcc_basever=$($_cc -dumpversion)
4166         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
4167         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
4168         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
4169         case $gcc_basever in
4170             2) ;;
4171             2.*) ;;
4172             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
4173         esac
4174         if [ "$first" = true ]; then
4175             case $gcc_basever in
4176                 4.2*)
4177                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
4178             esac
4179         fi
4180         _cflags_speed='-O3'
4181         _cflags_size='-Os'
4182     elif $_cc --version 2>/dev/null | grep -q ^icc; then
4183         _type=icc
4184         _ident=$($_cc --version | head -n1)
4185         _depflags='-MMD'
4186         _cflags_speed='-O3'
4187         _cflags_size='-Os'
4188         _cflags_noopt='-O1'
4189         _flags_filter=icc_flags
4190     elif $_cc -v 2>&1 | grep -q xlc; then
4191         _type=xlc
4192         _ident=$($_cc -qversion 2>/dev/null | head -n1)
4193         _cflags_speed='-O5'
4194         _cflags_size='-O5 -qcompact'
4195     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
4196         test -d "$sysroot" || die "No valid sysroot specified."
4197         _type=armcc
4198         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
4199         armcc_conf="$PWD/armcc.conf"
4200         $_cc --arm_linux_configure                 \
4201              --arm_linux_config_file="$armcc_conf" \
4202              --configure_sysroot="$sysroot"        \
4203              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
4204              die "Error creating armcc configuration file."
4205         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
4206         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
4207         as_default="${cross_prefix}gcc"
4208         _depflags='-MMD'
4209         _cflags_speed='-O3'
4210         _cflags_size='-Os'
4211     elif $_cc -v 2>&1 | grep -q clang; then
4212         _type=clang
4213         _ident=$($_cc --version 2>/dev/null | head -n1)
4214         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4215         _cflags_speed='-O3'
4216         _cflags_size='-Oz'
4217     elif $_cc -V 2>&1 | grep -q Sun; then
4218         _type=suncc
4219         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
4220         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
4221         _DEPFLAGS='-xM1 -xc99'
4222         _ldflags='-std=c99'
4223         _cflags_speed='-O5'
4224         _cflags_size='-O5 -xspace'
4225         _flags_filter=suncc_flags
4226     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
4227         _type=pathscale
4228         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4229         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4230         _cflags_speed='-O2'
4231         _cflags_size='-Os'
4232         _flags_filter='filter_out -Wdisabled-optimization'
4233     elif $_cc -v 2>&1 | grep -q Open64; then
4234         _type=open64
4235         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4236         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4237         _cflags_speed='-O2'
4238         _cflags_size='-Os'
4239         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
4240     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
4241         _type=armasm
4242         _ident=$($_cc | head -n1)
4243         # 4509: "This form of conditional instruction is deprecated"
4244         _flags="-nologo -ignore 4509"
4245         _flags_filter=armasm_flags
4246     elif $_cc 2>&1 | grep -q Intel; then
4247         _type=icl
4248         _ident=$($_cc 2>&1 | head -n1)
4249         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
4250         # Not only is O3 broken on 13.x+ but it is slower on all previous
4251         # versions (tested) as well.
4252         _cflags_speed="-O2"
4253         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
4254         if $_cc 2>&1 | grep -q Linker; then
4255             _ld_o='-out:$@'
4256         else
4257             _ld_o='-Fe$@'
4258         fi
4259         _cc_o='-Fo$@'
4260         _cc_e='-P'
4261         _flags_filter=icl_flags
4262         _ld_lib='lib%.a'
4263         _ld_path='-libpath:'
4264         # -Qdiag-error to make icl error when seeing certain unknown arguments
4265         _flags='-nologo -Qdiag-error:4044,10157'
4266         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
4267         # with MSVC which enables it by default.
4268         _cflags='-Qms0 -Qvec- -Qsimd- -GS -fp:precise'
4269         disable stripping
4270     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
4271         # lld can emulate multiple different linkers; in ms link.exe mode,
4272         # the -? parameter gives the help output which contains an identifyable
4273         # string, while it gives an error in other modes.
4274         _type=lld-link
4275         # The link.exe mode doesn't have a switch for getting the version,
4276         # but we can force it back to gnu mode and get the version from there.
4277         _ident=$($_cc -flavor gnu --version 2>/dev/null)
4278         _ld_o='-out:$@'
4279         _flags_filter=msvc_flags
4280         _ld_lib='lib%.a'
4281         _ld_path='-libpath:'
4282     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
4283         _type=msvc
4284         _ident=$($_cc 2>&1 | head -n1)
4285         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
4286         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
4287         _cflags_speed="-O2"
4288         _cflags_size="-O1"
4289         _cflags_noopt="-O1"
4290         if $_cc -nologo- 2>&1 | grep -q Linker; then
4291             _ld_o='-out:$@'
4292         else
4293             _ld_o='-Fe$@'
4294         fi
4295         _cc_o='-Fo$@'
4296         _cc_e='-P -Fi$@'
4297         _flags_filter=msvc_flags
4298         _ld_lib='lib%.a'
4299         _ld_path='-libpath:'
4300         _flags='-nologo'
4301         disable stripping
4302     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
4303         _type=cparser
4304         _ident=$($_cc --version | head -n1)
4305         _depflags='-MMD'
4306         _cflags_speed='-O4'
4307         _cflags_size='-O2'
4308         _flags_filter=cparser_flags
4309     fi
4310
4311     eval ${pfx}_type=\$_type
4312     eval ${pfx}_ident=\$_ident
4313 }
4314
4315 set_ccvars(){
4316     eval ${1}_C=\${_cc_c-\${${1}_C}}
4317     eval ${1}_E=\${_cc_e-\${${1}_E}}
4318     eval ${1}_O=\${_cc_o-\${${1}_O}}
4319
4320     if [ -n "$_depflags" ]; then
4321         eval ${1}_DEPFLAGS=\$_depflags
4322     else
4323         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
4324         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
4325         eval DEP${1}FLAGS=\$_flags
4326     fi
4327 }
4328
4329 probe_cc cc "$cc" "true"
4330 cflags_filter=$_flags_filter
4331 cflags_speed=$_cflags_speed
4332 cflags_size=$_cflags_size
4333 cflags_noopt=$_cflags_noopt
4334 add_cflags $_flags $_cflags
4335 cc_ldflags=$_ldflags
4336 set_ccvars CC
4337 set_ccvars CXX
4338
4339 probe_cc hostcc "$host_cc"
4340 host_cflags_filter=$_flags_filter
4341 host_cflags_speed=$_cflags_speed
4342 add_host_cflags  $_flags $_cflags
4343 set_ccvars HOSTCC
4344
4345 test -n "$cc_type" && enable $cc_type ||
4346     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4347
4348 : ${as_default:=$cc}
4349 : ${objcc_default:=$cc}
4350 : ${dep_cc_default:=$cc}
4351 : ${ld_default:=$cc}
4352 : ${host_ld_default:=$host_cc}
4353 set_default ar as objcc dep_cc ld ln_s host_ld windres
4354
4355 probe_cc as "$as"
4356 asflags_filter=$_flags_filter
4357 add_asflags $_flags $_cflags
4358 set_ccvars AS
4359
4360 probe_cc objcc "$objcc"
4361 objcflags_filter=$_flags_filter
4362 add_objcflags $_flags $_cflags
4363 set_ccvars OBJC
4364
4365 probe_cc ld "$ld"
4366 ldflags_filter=$_flags_filter
4367 add_ldflags $_flags $_ldflags
4368 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4369 LD_O=${_ld_o-$LD_O}
4370 LD_LIB=${_ld_lib-$LD_LIB}
4371 LD_PATH=${_ld_path-$LD_PATH}
4372
4373 probe_cc hostld "$host_ld"
4374 host_ldflags_filter=$_flags_filter
4375 add_host_ldflags $_flags $_ldflags
4376 HOSTLD_O=${_ld_o-$HOSTLD_O}
4377
4378 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4379     probe_cc depcc "$dep_cc"
4380     CCDEP=${_DEPCMD:-$DEPCMD}
4381     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4382     DEPCCFLAGS=$_flags
4383 fi
4384
4385 if $ar 2>&1 | grep -q Microsoft; then
4386     arflags="-nologo"
4387     ar_o='-out:$@'
4388 elif $ar 2>&1 | grep -q "\[D\] "; then
4389     arflags="rcD"
4390     ar_o='$@'
4391 else
4392     arflags="rc"
4393     ar_o='$@'
4394 fi
4395
4396 add_cflags $extra_cflags
4397 add_cxxflags $extra_cxxflags
4398 add_objcflags $extra_objcflags
4399 add_asflags $extra_cflags
4400
4401 if test -n "$sysroot"; then
4402     case "$cc_type" in
4403         gcc|llvm_gcc|clang)
4404             add_cppflags --sysroot="$sysroot"
4405             add_ldflags --sysroot="$sysroot"
4406         ;;
4407     esac
4408 fi
4409
4410 if test "$cpu" = host; then
4411     enabled cross_compile &&
4412         die "--cpu=host makes no sense when cross-compiling."
4413
4414     case "$cc_type" in
4415         gcc|llvm_gcc)
4416             check_native(){
4417                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4418                 sed -n "/cc1.*$1=/{
4419                             s/.*$1=\\([^ ]*\\).*/\\1/
4420                             p
4421                             q
4422                         }" $TMPE
4423             }
4424             cpu=$(check_native -march || check_native -mcpu)
4425         ;;
4426         clang)
4427             check_native(){
4428                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4429                 sed -n "/cc1.*-target-cpu /{
4430                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4431                             p
4432                             q
4433                         }" $TMPE
4434             }
4435             cpu=$(check_native -march)
4436         ;;
4437     esac
4438
4439     test "${cpu:-host}" = host &&
4440         die "--cpu=host not supported with compiler $cc"
4441 fi
4442
4443 # Deal with common $arch aliases
4444 case "$arch" in
4445     aarch64|arm64)
4446         arch="aarch64"
4447     ;;
4448     arm*|iPad*|iPhone*)
4449         arch="arm"
4450     ;;
4451     mips*|IP*)
4452         case "$arch" in
4453         *el)
4454             add_cppflags -EL
4455             add_ldflags -EL
4456         ;;
4457         *eb)
4458             add_cppflags -EB
4459             add_ldflags -EB
4460         ;;
4461         esac
4462         arch="mips"
4463     ;;
4464     parisc*|hppa*)
4465         arch="parisc"
4466     ;;
4467     "Power Macintosh"|ppc*|powerpc*)
4468         arch="ppc"
4469     ;;
4470     s390|s390x)
4471         arch="s390"
4472     ;;
4473     sh4|sh)
4474         arch="sh4"
4475     ;;
4476     sun4*|sparc*)
4477         arch="sparc"
4478     ;;
4479     tilegx|tile-gx)
4480         arch="tilegx"
4481     ;;
4482     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4483         arch="x86"
4484     ;;
4485 esac
4486
4487 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4488 enable $arch
4489
4490 # Add processor-specific flags
4491 if enabled aarch64; then
4492
4493     case $cpu in
4494         armv*)
4495             cpuflags="-march=$cpu"
4496         ;;
4497         *)
4498             cpuflags="-mcpu=$cpu"
4499         ;;
4500     esac
4501
4502 elif enabled alpha; then
4503
4504     cpuflags="-mcpu=$cpu"
4505
4506 elif enabled arm; then
4507
4508     check_arm_arch() {
4509         check_cpp_condition stddef.h \
4510             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4511             $cpuflags
4512     }
4513
4514     probe_arm_arch() {
4515         if   check_arm_arch 4;        then echo armv4
4516         elif check_arm_arch 4T;       then echo armv4t
4517         elif check_arm_arch 5;        then echo armv5
4518         elif check_arm_arch 5E;       then echo armv5e
4519         elif check_arm_arch 5T;       then echo armv5t
4520         elif check_arm_arch 5TE;      then echo armv5te
4521         elif check_arm_arch 5TEJ;     then echo armv5te
4522         elif check_arm_arch 6;        then echo armv6
4523         elif check_arm_arch 6J;       then echo armv6j
4524         elif check_arm_arch 6K;       then echo armv6k
4525         elif check_arm_arch 6Z;       then echo armv6z
4526         elif check_arm_arch 6ZK;      then echo armv6zk
4527         elif check_arm_arch 6T2;      then echo armv6t2
4528         elif check_arm_arch 7;        then echo armv7
4529         elif check_arm_arch 7A  7_A;  then echo armv7-a
4530         elif check_arm_arch 7S;       then echo armv7-a
4531         elif check_arm_arch 7R  7_R;  then echo armv7-r
4532         elif check_arm_arch 7M  7_M;  then echo armv7-m
4533         elif check_arm_arch 7EM 7E_M; then echo armv7-m
4534         elif check_arm_arch 8A  8_A;  then echo armv8-a
4535         fi
4536     }
4537
4538     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4539
4540     case $cpu in
4541         armv*)
4542             cpuflags="-march=$cpu"
4543             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4544         ;;
4545         *)
4546             cpuflags="-mcpu=$cpu"
4547             case $cpu in
4548                 cortex-a*)                               subarch=armv7a  ;;
4549                 cortex-r*)                               subarch=armv7r  ;;
4550                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4551                 arm11*)                                  subarch=armv6   ;;
4552                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4553                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4554                 *)                             subarch=$(probe_arm_arch) ;;
4555             esac
4556         ;;
4557     esac
4558
4559     case "$subarch" in
4560         armv5t*)    enable fast_clz                ;;
4561         armv[6-8]*)
4562             enable fast_clz
4563             disabled fast_unaligned || enable fast_unaligned
4564             ;;
4565     esac
4566
4567 elif enabled avr32; then
4568
4569     case $cpu in
4570         ap7[02]0[0-2])
4571             subarch="avr32_ap"
4572             cpuflags="-mpart=$cpu"
4573         ;;
4574         ap)
4575             subarch="avr32_ap"
4576             cpuflags="-march=$cpu"
4577         ;;
4578         uc3[ab]*)
4579             subarch="avr32_uc"
4580             cpuflags="-mcpu=$cpu"
4581         ;;
4582         uc)
4583             subarch="avr32_uc"
4584             cpuflags="-march=$cpu"
4585         ;;
4586     esac
4587
4588 elif enabled bfin; then
4589
4590     cpuflags="-mcpu=$cpu"
4591
4592 elif enabled mips; then
4593
4594     cpuflags="-march=$cpu"
4595
4596     if [ "$cpu" != "generic" ]; then
4597         disable mips32r2
4598         disable mips32r5
4599         disable mips64r2
4600         disable mips32r6
4601         disable mips64r6
4602         disable loongson2
4603         disable loongson3
4604
4605         case $cpu in
4606             24kc|24kf*|24kec|34kc|1004kc|24kef*|34kf*|1004kf*|74kc|74kf)
4607                 enable mips32r2
4608                 disable msa
4609             ;;
4610             p5600|i6400|p6600)
4611                 disable mipsdsp
4612                 disable mipsdspr2
4613             ;;
4614             loongson*)
4615                 enable loongson2
4616                 enable loongson3
4617                 enable local_aligned
4618                 enable simd_align_16
4619                 enable fast_64bit
4620                 enable fast_clz
4621                 enable fast_cmov
4622                 enable fast_unaligned
4623                 disable aligned_stack
4624                 disable mipsfpu
4625                 disable mipsdsp
4626                 disable mipsdspr2
4627                 case $cpu in
4628                     loongson3*)
4629                         cpuflags="-march=loongson3a -mhard-float -fno-expensive-optimizations"
4630                     ;;
4631                     loongson2e)
4632                         cpuflags="-march=loongson2e -mhard-float -fno-expensive-optimizations"
4633                     ;;
4634                     loongson2f)
4635                         cpuflags="-march=loongson2f -mhard-float -fno-expensive-optimizations"
4636                     ;;
4637                 esac
4638             ;;
4639             *)
4640                 # Unknown CPU. Disable everything.
4641                 warn "unknown CPU. Disabling all MIPS optimizations."
4642                 disable mipsfpu
4643                 disable mipsdsp
4644                 disable mipsdspr2
4645                 disable msa
4646                 disable mmi
4647             ;;
4648         esac
4649
4650         case $cpu in
4651             24kc)
4652                 disable mipsfpu
4653                 disable mipsdsp
4654                 disable mipsdspr2
4655             ;;
4656             24kf*)
4657                 disable mipsdsp
4658                 disable mipsdspr2
4659             ;;
4660             24kec|34kc|1004kc)
4661                 disable mipsfpu
4662                 disable mipsdspr2
4663             ;;
4664             24kef*|34kf*|1004kf*)
4665                 disable mipsdspr2
4666             ;;
4667             74kc)
4668                 disable mipsfpu
4669             ;;
4670             p5600)
4671                 enable mips32r5
4672                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
4673             ;;
4674             i6400)
4675                 enable mips64r6
4676                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4677             ;;
4678             p6600)
4679                 enable mips64r6
4680                 check_cflags "-mtune=p6600 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4681             ;;
4682         esac
4683     else
4684         # We do not disable anything. Is up to the user to disable the unwanted features.
4685         warn 'generic cpu selected'
4686     fi
4687
4688 elif enabled ppc; then
4689
4690     disable ldbrx
4691
4692     case $(tolower $cpu) in
4693         601|ppc601|powerpc601)
4694             cpuflags="-mcpu=601"
4695             disable altivec
4696         ;;
4697         603*|ppc603*|powerpc603*)
4698             cpuflags="-mcpu=603"
4699             disable altivec
4700         ;;
4701         604*|ppc604*|powerpc604*)
4702             cpuflags="-mcpu=604"
4703             disable altivec
4704         ;;
4705         g3|75*|ppc75*|powerpc75*)
4706             cpuflags="-mcpu=750"
4707             disable altivec
4708         ;;
4709         g4|745*|ppc745*|powerpc745*)
4710             cpuflags="-mcpu=7450"
4711             disable vsx
4712         ;;
4713         74*|ppc74*|powerpc74*)
4714             cpuflags="-mcpu=7400"
4715             disable vsx
4716         ;;
4717         g5|970|ppc970|powerpc970)
4718             cpuflags="-mcpu=970"
4719             disable vsx
4720         ;;
4721         power[3-6]*)
4722             cpuflags="-mcpu=$cpu"
4723             disable vsx
4724         ;;
4725         power[7-8]*)
4726             cpuflags="-mcpu=$cpu"
4727         ;;
4728         cell)
4729             cpuflags="-mcpu=cell"
4730             enable ldbrx
4731             disable vsx
4732         ;;
4733         e500mc)
4734             cpuflags="-mcpu=e500mc"
4735             disable altivec
4736         ;;
4737         e500v2)
4738             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
4739             disable altivec
4740             disable dcbzl
4741         ;;
4742         e500)
4743             cpuflags="-mcpu=8540 -mhard-float"
4744             disable altivec
4745             disable dcbzl
4746         ;;
4747     esac
4748
4749 elif enabled sparc; then
4750
4751     case $cpu in
4752         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
4753             cpuflags="-mcpu=$cpu"
4754         ;;
4755         ultrasparc*|niagara[234])
4756             cpuflags="-mcpu=$cpu"
4757         ;;
4758     esac
4759
4760 elif enabled x86; then
4761
4762     case $cpu in
4763         i[345]86|pentium)
4764             cpuflags="-march=$cpu"
4765             disable i686
4766             disable mmx
4767         ;;
4768         # targets that do NOT support nopl and conditional mov (cmov)
4769         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
4770             cpuflags="-march=$cpu"
4771             disable i686
4772         ;;
4773         # targets that do support nopl and conditional mov (cmov)
4774         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
4775         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|skylake*|knl\
4776         |amdfam10|barcelona|b[dt]ver*|znver*)
4777             cpuflags="-march=$cpu"
4778             enable i686
4779             enable fast_cmov
4780         ;;
4781         # targets that do support conditional mov but on which it's slow
4782         pentium4|pentium4m|prescott|nocona)
4783             cpuflags="-march=$cpu"
4784             enable i686
4785             disable fast_cmov
4786         ;;
4787     esac
4788
4789 fi
4790
4791 if [ "$cpu" != generic ]; then
4792     add_cflags  $cpuflags
4793     add_asflags $cpuflags
4794     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
4795 fi
4796
4797 # compiler sanity check
4798 check_exec <<EOF
4799 int main(void){ return 0; }
4800 EOF
4801 if test "$?" != 0; then
4802     echo "$cc is unable to create an executable file."
4803     if test -z "$cross_prefix" && ! enabled cross_compile ; then
4804         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
4805         echo "Only do this if you know what cross compiling means."
4806     fi
4807     die "C compiler test failed."
4808 fi
4809
4810 add_cppflags -D_ISOC99_SOURCE
4811 add_cxxflags -D__STDC_CONSTANT_MACROS
4812 check_cxxflags -std=c++11 || check_cxxflags -std=c++0x
4813
4814 # some compilers silently accept -std=c11, so we also need to check that the
4815 # version macro is defined properly
4816 test_cflags_cc -std=c11 ctype.h "__STDC_VERSION__ >= 201112L" &&
4817     add_cflags -std=c11 ||
4818     check_cflags -std=c99
4819
4820 check_cppflags -D_FILE_OFFSET_BITS=64
4821 check_cppflags -D_LARGEFILE_SOURCE
4822
4823 add_host_cppflags -D_ISOC99_SOURCE
4824 check_host_cflags -std=c99
4825 check_host_cflags -Wall
4826 check_host_cflags $host_cflags_speed
4827
4828 check_64bit(){
4829     arch32=$1
4830     arch64=$2
4831     expr=$3
4832     check_code cc "" "int test[2*($expr) - 1]" &&
4833         subarch=$arch64 || subarch=$arch32
4834     enable $subarch
4835 }
4836
4837 case "$arch" in
4838     aarch64|alpha|ia64)
4839         enabled shared && enable_weak pic
4840     ;;
4841     mips)
4842         check_64bit mips mips64 '_MIPS_SIM > 1'
4843         enabled shared && enable_weak pic
4844     ;;
4845     parisc)
4846         check_64bit parisc parisc64 'sizeof(void *) > 4'
4847         enabled shared && enable_weak pic
4848     ;;
4849     ppc)
4850         check_64bit ppc ppc64 'sizeof(void *) > 4'
4851         enabled shared && enable_weak pic
4852     ;;
4853     s390)
4854         check_64bit s390 s390x 'sizeof(void *) > 4'
4855         enabled shared && enable_weak pic
4856     ;;
4857     sparc)
4858         check_64bit sparc sparc64 'sizeof(void *) > 4'
4859         enabled shared && enable_weak pic
4860     ;;
4861     x86)
4862         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
4863         # Treat x32 as x64 for now. Note it also needs pic if shared
4864         test "$subarch" = "x86_32" && check_cpp_condition stddef.h 'defined(__x86_64__)' &&
4865             subarch=x86_64 && enable x86_64 && disable x86_32
4866         if enabled x86_64; then
4867             enabled shared && enable_weak pic
4868             objformat=elf64
4869         fi
4870     ;;
4871 esac
4872
4873 # OS specific
4874 case $target_os in
4875     aix)
4876         SHFLAGS=-shared
4877         add_cppflags '-I\$(SRC_PATH)/compat/aix'
4878         enabled shared && add_ldflags -Wl,-brtl
4879         arflags='-Xany -r -c'
4880         ;;
4881     android)
4882         disable symver
4883         enable section_data_rel_ro
4884         SLIB_INSTALL_NAME='$(SLIBNAME)'
4885         SLIB_INSTALL_LINKS=
4886         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
4887         ;;
4888     haiku)
4889         prefix_default="/boot/common"
4890         network_extralibs="-lnetwork"
4891         host_extralibs=
4892         ;;
4893     sunos)
4894         SHFLAGS='-shared -Wl,-h,$$(@F)'
4895         enabled x86 && append SHFLAGS -mimpure-text
4896         network_extralibs="-lsocket -lnsl"
4897         add_cppflags -D__EXTENSIONS__
4898         # When using suncc to build, the Solaris linker will mark
4899         # an executable with each instruction set encountered by
4900         # the Solaris assembler.  As our libraries contain their own
4901         #&nbs