libavcodec: v4l2: add support for v4l2 mem2mem codecs
[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   --disable-jack           disable libjack support [autodetect]
221   --enable-jni             enable JNI support [no]
222   --enable-ladspa          enable LADSPA audio filtering [no]
223   --enable-libass          enable libass subtitles rendering,
224                            needed for subtitles and ass filter [no]
225   --enable-libbluray       enable BluRay reading using libbluray [no]
226   --enable-libbs2b         enable bs2b DSP library [no]
227   --enable-libcaca         enable textual display using libcaca [no]
228   --enable-libcelt         enable CELT decoding via libcelt [no]
229   --enable-libcdio         enable audio CD grabbing with libcdio [no]
230   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
231                            and libraw1394 [no]
232   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
233   --enable-libflite        enable flite (voice synthesis) support via libflite [no]
234   --enable-libfontconfig   enable libfontconfig, useful for drawtext filter [no]
235   --enable-libfreetype     enable libfreetype, needed for drawtext filter [no]
236   --enable-libfribidi      enable libfribidi, improves drawtext filter [no]
237   --enable-libgme          enable Game Music Emu via libgme [no]
238   --enable-libgsm          enable GSM de/encoding via libgsm [no]
239   --enable-libiec61883     enable iec61883 via libiec61883 [no]
240   --enable-libilbc         enable iLBC de/encoding via libilbc [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-nvenc          disable Nvidia video encoding code [autodetect]
317   --enable-omx             enable OpenMAX IL code [no]
318   --enable-omx-rpi         enable OpenMAX IL code for Raspberry Pi [no]
319   --disable-vaapi          disable Video Acceleration API (mainly Unix/Intel) code [autodetect]
320   --disable-vda            disable Apple Video Decode Acceleration code [autodetect]
321   --disable-vdpau          disable Nvidia Video Decode and Presentation API for Unix code [autodetect]
322   --disable-videotoolbox   disable VideoToolbox code [autodetect]
323
324 Toolchain options:
325   --arch=ARCH              select architecture [$arch]
326   --cpu=CPU                select the minimum required CPU (affects
327                            instruction selection, may crash on older CPUs)
328   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
329   --progs-suffix=SUFFIX    program name suffix []
330   --enable-cross-compile   assume a cross-compiler is used
331   --sysroot=PATH           root of cross-build tree
332   --sysinclude=PATH        location of cross-build system headers
333   --target-os=OS           compiler targets OS [$target_os]
334   --target-exec=CMD        command to run executables on target
335   --target-path=DIR        path to view of build directory on target
336   --target-samples=DIR     path to samples directory on target
337   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
338   --toolchain=NAME         set tool defaults according to NAME
339   --nm=NM                  use nm tool NM [$nm_default]
340   --ar=AR                  use archive tool AR [$ar_default]
341   --as=AS                  use assembler AS [$as_default]
342   --ln_s=LN_S              use symbolic link tool LN_S [$ln_s_default]
343   --strip=STRIP            use strip tool STRIP [$strip_default]
344   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
345   --x86asmexe=EXE          use nasm-compatible assembler EXE [$x86asmexe_default]
346   --cc=CC                  use C compiler CC [$cc_default]
347   --cxx=CXX                use C compiler CXX [$cxx_default]
348   --objcc=OCC              use ObjC compiler OCC [$cc_default]
349   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
350   --nvcc=NVCC              use Nvidia CUDA compiler NVCC [$nvcc_default]
351   --ld=LD                  use linker LD [$ld_default]
352   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
353   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
354   --ranlib=RANLIB          use ranlib RANLIB [$ranlib_default]
355   --doxygen=DOXYGEN        use DOXYGEN to generate API doc [$doxygen_default]
356   --host-cc=HOSTCC         use host C compiler HOSTCC
357   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
358   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
359   --host-ld=HOSTLD         use host linker HOSTLD
360   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
361   --host-libs=HLIBS        use libs HLIBS when linking for host
362   --host-os=OS             compiler host OS [$target_os]
363   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
364   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
365   --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
366   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
367   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
368   --extra-ldlibflags=ELDFLAGS add ELDFLAGS to LDLIBFLAGS [$LDLIBFLAGS]
369   --extra-libs=ELIBS       add ELIBS [$ELIBS]
370   --extra-version=STRING   version string suffix []
371   --optflags=OPTFLAGS      override optimization-related compiler flags
372   --nvccflags=NVCCFLAGS    override nvcc flags [$nvccflags_default]
373   --build-suffix=SUFFIX    library name suffix []
374   --enable-pic             build position-independent code
375   --enable-thumb           compile for Thumb instruction set
376   --enable-lto             use link-time optimization
377   --env="ENV=override"     override the environment variables
378
379 Advanced options (experts only):
380   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
381   --custom-allocator=NAME  use a supported custom allocator
382   --disable-symver         disable symbol versioning
383   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
384   --disable-safe-bitstream-reader
385                            disable buffer boundary checking in bitreaders
386                            (faster, but may crash)
387   --sws-max-filter-size=N  the max filter size swscale uses [$sws_max_filter_size_default]
388
389 Optimization options (experts only):
390   --disable-asm            disable all assembly optimizations
391   --disable-altivec        disable AltiVec optimizations
392   --disable-vsx            disable VSX optimizations
393   --disable-power8         disable POWER8 optimizations
394   --disable-amd3dnow       disable 3DNow! optimizations
395   --disable-amd3dnowext    disable 3DNow! extended optimizations
396   --disable-mmx            disable MMX optimizations
397   --disable-mmxext         disable MMXEXT optimizations
398   --disable-sse            disable SSE optimizations
399   --disable-sse2           disable SSE2 optimizations
400   --disable-sse3           disable SSE3 optimizations
401   --disable-ssse3          disable SSSE3 optimizations
402   --disable-sse4           disable SSE4 optimizations
403   --disable-sse42          disable SSE4.2 optimizations
404   --disable-avx            disable AVX optimizations
405   --disable-xop            disable XOP optimizations
406   --disable-fma3           disable FMA3 optimizations
407   --disable-fma4           disable FMA4 optimizations
408   --disable-avx2           disable AVX2 optimizations
409   --disable-aesni          disable AESNI optimizations
410   --disable-armv5te        disable armv5te optimizations
411   --disable-armv6          disable armv6 optimizations
412   --disable-armv6t2        disable armv6t2 optimizations
413   --disable-vfp            disable VFP optimizations
414   --disable-neon           disable NEON optimizations
415   --disable-inline-asm     disable use of inline assembly
416   --disable-x86asm         disable use of standalone x86 assembly
417   --disable-mipsdsp        disable MIPS DSP ASE R1 optimizations
418   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
419   --disable-msa            disable MSA optimizations
420   --disable-mipsfpu        disable floating point MIPS optimizations
421   --disable-mmi            disable Loongson SIMD optimizations
422   --disable-fast-unaligned consider unaligned accesses slow
423
424 Developer options (useful when working on FFmpeg itself):
425   --disable-debug          disable debugging symbols
426   --enable-debug=LEVEL     set the debug level [$debuglevel]
427   --disable-optimizations  disable compiler optimizations
428   --enable-extra-warnings  enable more compiler warnings
429   --disable-stripping      disable stripping of executables and shared libraries
430   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
431                            2 causes a slowdown at runtime.
432   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
433   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
434                            leaks and errors, using the specified valgrind binary.
435                            Cannot be combined with --target-exec
436   --enable-ftrapv          Trap arithmetic overflows
437   --samples=PATH           location of test samples for FATE, if not set use
438                            \$FATE_SAMPLES at make invocation time.
439   --enable-neon-clobber-test check NEON registers for clobbering (should be
440                            used only for debugging purposes)
441   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
442                            should be used only for debugging purposes)
443   --enable-random          randomly enable/disable components
444   --disable-random
445   --enable-random=LIST     randomly enable/disable specific components or
446   --disable-random=LIST    component groups. LIST is a comma-separated list
447                            of NAME[:PROB] entries where NAME is a component
448                            (group) and PROB the probability associated with
449                            NAME (default 0.5).
450   --random-seed=VALUE      seed value for --enable/disable-random
451   --disable-valgrind-backtrace do not print a backtrace under Valgrind
452                            (only applies to --disable-optimizations builds)
453   --enable-osfuzz          Enable building fuzzer tool
454   --libfuzzer=PATH         path to libfuzzer
455   --ignore-tests=TESTS     comma-separated list (without "fate-" prefix
456                            in the name) of tests whose result is ignored
457   --enable-linux-perf      enable Linux Performance Monitor API
458
459 NOTE: Object files are built at the place where configure is launched.
460 EOF
461   exit 0
462 }
463
464 quotes='""'
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_safe(){
588     var=$1
589     shift
590     eval $(sanitize_var_name "$var")='$*'
591 }
592
593 get_safe(){
594     eval echo \$$(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_safe(){
640     for var; do
641         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
642     done
643 }
644
645 disable_safe(){
646     for var; do
647         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
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 = $value ] && return 0
730     done
731     return 1
732 }
733
734 do_check_deps(){
735     for cfg; do
736         cfg="${cfg#!}"
737         enabled ${cfg}_checking && die "Circular dependency for $cfg."
738         disabled ${cfg}_checking && continue
739         enable ${cfg}_checking
740         append allopts $cfg
741
742         eval dep_all="\$${cfg}_deps"
743         eval dep_any="\$${cfg}_deps_any"
744         eval dep_sel="\$${cfg}_select"
745         eval dep_sgs="\$${cfg}_suggest"
746         eval dep_ifa="\$${cfg}_if"
747         eval dep_ifn="\$${cfg}_if_any"
748
749         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
750         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
751         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
752
753         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
754         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
755         enabled_all  $dep_all || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but not all dependencies are satisfied: $dep_all"; }
756         enabled_any  $dep_any || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but not any dependency is satisfied: $dep_any"; }
757         disabled_any $dep_sel && { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but some selected dependency is unsatisfied: $dep_sel"; }
758
759         if enabled $cfg; then
760             enable_deep $dep_sel
761             enable_deep_weak $dep_sgs
762         fi
763
764         disable ${cfg}_checking
765     done
766 }
767
768 check_deps(){
769     unset allopts
770
771     do_check_deps "$@"
772
773     for cfg in $allopts; do
774         enabled $cfg || continue
775         eval dep_extralibs="\$${cfg}_extralibs"
776         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
777     done
778 }
779
780 print_config(){
781     pfx=$1
782     files=$2
783     shift 2
784     map 'eval echo "$v \${$v:-no}"' "$@" |
785     awk "BEGIN { split(\"$files\", files) }
786         {
787             c = \"$pfx\" toupper(\$1);
788             v = \$2;
789             sub(/yes/, 1, v);
790             sub(/no/,  0, v);
791             for (f in files) {
792                 file = files[f];
793                 if (file ~ /\\.h\$/) {
794                     printf(\"#define %s %d\\n\", c, v) >>file;
795                 } else if (file ~ /\\.asm\$/) {
796                     printf(\"%%define %s %d\\n\", c, v) >>file;
797                 } else if (file ~ /\\.mak\$/) {
798                     n = -v ? \"\" : \"!\";
799                     printf(\"%s%s=yes\\n\", n, c) >>file;
800                 } else if (file ~ /\\.texi\$/) {
801                     pre = -v ? \"\" : \"@c \";
802                     yesno = \$2;
803                     c2 = tolower(c);
804                     gsub(/_/, \"-\", c2);
805                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
806                 }
807             }
808         }"
809 }
810
811 print_enabled(){
812     suf=$1
813     shift
814     for v; do
815         enabled $v && printf "%s\n" ${v%$suf}
816     done
817 }
818
819 append(){
820     var=$1
821     shift
822     eval "$var=\"\$$var $*\""
823 }
824
825 prepend(){
826     var=$1
827     shift
828     eval "$var=\"$* \$$var\""
829 }
830
831 unique(){
832     var=$1
833     uniq_list=""
834     for tok in $(eval echo \$$var); do
835         uniq_list="$(filter_out $tok $uniq_list) $tok"
836     done
837     eval "$var=\"${uniq_list}\""
838 }
839
840 add_cppflags(){
841     append CPPFLAGS "$@"
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_ldlibflags(){
873     append LDLIBFLAGS $($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 int x;
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     check_ld "cc" "$@" <<EOF
1084 int main(void){ return 0; }
1085 EOF
1086 }
1087
1088 check_ldflags(){
1089     log check_ldflags "$@"
1090     test_ldflags "$@" && add_ldflags "$@"
1091 }
1092
1093 test_stripflags(){
1094     log test_stripflags "$@"
1095     # call check_cc to get a fresh TMPO
1096     check_cc <<EOF
1097 int main(void) { return 0; }
1098 EOF
1099     check_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
1100 }
1101
1102 check_stripflags(){
1103     log check_stripflags "$@"
1104     test_stripflags "$@" && add_stripflags "$@"
1105 }
1106
1107 check_header(){
1108     log check_header "$@"
1109     header=$1
1110     shift
1111     disable_safe $header
1112     check_cpp "$@" <<EOF && enable_safe $header
1113 #include <$header>
1114 int x;
1115 EOF
1116 }
1117
1118 check_header_objcc(){
1119     log check_header_objcc "$@"
1120     rm -f -- "$TMPO"
1121     header=$1
1122     shift
1123     disable_safe $header
1124     {
1125        echo "#include <$header>"
1126        echo "int main(void) { return 0; }"
1127     } | check_objcc && check_stat "$TMPO" && enable_safe $header
1128 }
1129
1130 check_apple_framework(){
1131     log check_apple_framework "$@"
1132     framework="$1"
1133     name="$(tolower $framework)"
1134     header="${framework}/${framework}.h"
1135     disable $name
1136     check_header_objcc $header && enable $name && add_extralibs "-framework $framework"
1137 }
1138
1139 check_func(){
1140     log check_func "$@"
1141     func=$1
1142     shift
1143     disable $func
1144     check_ld "cc" "$@" <<EOF && enable $func
1145 extern int $func();
1146 int main(void){ $func(); }
1147 EOF
1148 }
1149
1150 check_complexfunc(){
1151     log check_complexfunc "$@"
1152     func=$1
1153     narg=$2
1154     shift 2
1155     test $narg = 2 && args="f, g" || args="f * I"
1156     disable $func
1157     check_ld "cc" "$@" <<EOF && enable $func
1158 #include <complex.h>
1159 #include <math.h>
1160 float foo(complex float f, complex float g) { return $func($args); }
1161 int main(void){ return (int) foo; }
1162 EOF
1163 }
1164
1165 check_mathfunc(){
1166     log check_mathfunc "$@"
1167     func=$1
1168     narg=$2
1169     shift 2
1170     test $narg = 2 && args="f, g" || args="f"
1171     disable $func
1172     check_ld "cc" "$@" <<EOF && enable $func
1173 #include <math.h>
1174 float foo(float f, float g) { return $func($args); }
1175 int main(void){ return (int) foo; }
1176 EOF
1177 }
1178
1179 check_func_headers(){
1180     log check_func_headers "$@"
1181     headers=$1
1182     funcs=$2
1183     shift 2
1184     {
1185         for hdr in $headers; do
1186             print_include $hdr
1187         done
1188         echo "#include <stdint.h>"
1189         for func in $funcs; do
1190             echo "long check_$func(void) { return (long) $func; }"
1191         done
1192         echo "int main(void) { int ret = 0;"
1193         # LTO could optimize out the test functions without this
1194         for func in $funcs; do
1195             echo " ret |= ((intptr_t)check_$func) & 0xFFFF;"
1196         done
1197         echo "return ret; }"
1198     } | check_ld "cc" "$@" && enable $funcs && enable_safe $headers
1199 }
1200
1201 check_class_headers_cpp(){
1202     log check_class_headers_cpp "$@"
1203     headers=$1
1204     classes=$2
1205     shift 2
1206     {
1207         for hdr in $headers; do
1208             echo "#include <$hdr>"
1209         done
1210         echo "int main(void) { "
1211         i=1
1212         for class in $classes; do
1213             echo "$class obj$i;"
1214             i=$(expr $i + 1)
1215         done
1216         echo "return 0; }"
1217     } | check_ld "cxx" "$@" && enable $funcs && enable_safe $headers
1218 }
1219
1220 check_cpp_condition(){
1221     log check_cpp_condition "$@"
1222     header=$1
1223     condition=$2
1224     shift 2
1225     check_cpp "$@" <<EOF
1226 #include <$header>
1227 #if !($condition)
1228 #error "unsatisfied condition: $condition"
1229 #endif
1230 EOF
1231 }
1232
1233 test_cflags_cc(){
1234     log test_cflags_cc "$@"
1235     flags=$1
1236     header=$2
1237     condition=$3
1238     shift 3
1239     set -- $($cflags_filter "$flags")
1240     check_cc "$@" <<EOF
1241 #include <$header>
1242 #if !($condition)
1243 #error "unsatisfied condition: $condition"
1244 #endif
1245 EOF
1246 }
1247
1248 check_lib(){
1249     log check_lib "$@"
1250     name="$1"
1251     headers="$2"
1252     funcs="$3"
1253     shift 3
1254     disable $name
1255     check_func_headers "$headers" "$funcs" "$@" &&
1256         enable $name && add_extralibs "$@"
1257 }
1258
1259 check_lib_cpp(){
1260     log check_lib_cpp "$@"
1261     headers="$1"
1262     classes="$2"
1263     shift 2
1264     check_class_headers_cpp "$headers" "$classes" "$@" && add_extralibs "$@"
1265 }
1266
1267 check_pkg_config(){
1268     log check_pkg_config "$@"
1269     pkg_version="$1"
1270     pkg="${1%% *}"
1271     headers="$2"
1272     funcs="$3"
1273     shift 3
1274     check_cmd $pkg_config --exists --print-errors $pkg_version || return
1275     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1276     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1277     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1278         set_safe "${pkg}_cflags"    $pkg_cflags &&
1279         set_safe "${pkg}_extralibs" $pkg_libs
1280 }
1281
1282 check_exec(){
1283     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1284 }
1285
1286 check_exec_crash(){
1287     log check_exec_crash "$@"
1288     code=$(cat)
1289
1290     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1291     # are safe but may not be available everywhere.  Thus we use
1292     # raise(SIGTERM) instead.  The check is run in a subshell so we
1293     # can redirect the "Terminated" message from the shell.  SIGBUS
1294     # is not defined by standard C so it is used conditionally.
1295
1296     (check_exec "$@") >> $logfile 2>&1 <<EOF
1297 #include <signal.h>
1298 static void sighandler(int sig){
1299     raise(SIGTERM);
1300 }
1301 int foo(void){
1302     $code
1303 }
1304 int (*func_ptr)(void) = foo;
1305 int main(void){
1306     signal(SIGILL, sighandler);
1307     signal(SIGFPE, sighandler);
1308     signal(SIGSEGV, sighandler);
1309 #ifdef SIGBUS
1310     signal(SIGBUS, sighandler);
1311 #endif
1312     return func_ptr();
1313 }
1314 EOF
1315 }
1316
1317 check_type(){
1318     log check_type "$@"
1319     headers=$1
1320     type=$2
1321     shift 2
1322     disable_safe "$type"
1323     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1324 }
1325
1326 check_struct(){
1327     log check_struct "$@"
1328     headers=$1
1329     struct=$2
1330     member=$3
1331     shift 3
1332     disable_safe "${struct}_${member}"
1333     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1334         enable_safe "${struct}_${member}"
1335 }
1336
1337 check_builtin(){
1338     log check_builtin "$@"
1339     name=$1
1340     headers=$2
1341     builtin=$3
1342     shift 3
1343     disable "$name"
1344     check_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1345 }
1346
1347 check_compile_assert(){
1348     log check_compile_assert "$@"
1349     name=$1
1350     headers=$2
1351     condition=$3
1352     shift 3
1353     disable "$name"
1354     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1355 }
1356
1357 require(){
1358     log require "$@"
1359     name_version="$1"
1360     name="${1%% *}"
1361     headers="$2"
1362     func="$3"
1363     shift 3
1364     check_lib $name "$headers" $func "$@" || die "ERROR: $name_version not found"
1365 }
1366
1367 require_cpp(){
1368     name="$1"
1369     headers="$2"
1370     classes="$3"
1371     shift 3
1372     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1373 }
1374
1375 use_pkg_config(){
1376     log use_pkg_config "$@"
1377     pkg="$1"
1378     check_pkg_config "$@" || return 1
1379     add_cflags    $(get_safe "${pkg}_cflags")
1380     add_extralibs $(get_safe "${pkg}_extralibs")
1381 }
1382
1383 require_pkg_config(){
1384     use_pkg_config "$@" || die "ERROR: $pkg not found using pkg-config$pkg_config_fail_message"
1385 }
1386
1387 hostcc_e(){
1388     eval printf '%s\\n' $HOSTCC_E
1389 }
1390
1391 hostcc_o(){
1392     eval printf '%s\\n' $HOSTCC_O
1393 }
1394
1395 check_host_cc(){
1396     log check_host_cc "$@"
1397     cat > $TMPC
1398     log_file $TMPC
1399     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1400 }
1401
1402 check_host_cpp(){
1403     log check_host_cpp "$@"
1404     cat > $TMPC
1405     log_file $TMPC
1406     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1407 }
1408
1409 check_host_cppflags(){
1410     log check_host_cppflags "$@"
1411     check_host_cpp "$@" <<EOF && append host_cppflags "$@"
1412 int x;
1413 EOF
1414 }
1415
1416 check_host_cflags(){
1417     log check_host_cflags "$@"
1418     set -- $($host_cflags_filter "$@")
1419     check_host_cc "$@" <<EOF && append host_cflags "$@"
1420 int x;
1421 EOF
1422 }
1423
1424 check_host_cpp_condition(){
1425     log check_host_cpp_condition "$@"
1426     header=$1
1427     condition=$2
1428     shift 2
1429     check_host_cpp "$@" <<EOF
1430 #include <$header>
1431 #if !($condition)
1432 #error "unsatisfied condition: $condition"
1433 #endif
1434 EOF
1435 }
1436
1437 cp_if_changed(){
1438     cmp -s "$1" "$2" && { test "$quiet" != "yes" && echo "$2 is unchanged"; } && return
1439     mkdir -p "$(dirname $2)"
1440     cp -f "$1" "$2"
1441 }
1442
1443 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1444 # system-dependent things.
1445
1446 AVCODEC_COMPONENTS="
1447     bsfs
1448     decoders
1449     encoders
1450     hwaccels
1451     parsers
1452 "
1453
1454 AVDEVICE_COMPONENTS="
1455     indevs
1456     outdevs
1457 "
1458
1459 AVFILTER_COMPONENTS="
1460     filters
1461 "
1462
1463 AVFORMAT_COMPONENTS="
1464     demuxers
1465     muxers
1466     protocols
1467 "
1468
1469 AVRESAMPLE_COMPONENTS=""
1470
1471 AVUTIL_COMPONENTS=""
1472
1473 COMPONENT_LIST="
1474     $AVCODEC_COMPONENTS
1475     $AVDEVICE_COMPONENTS
1476     $AVFILTER_COMPONENTS
1477     $AVFORMAT_COMPONENTS
1478     $AVRESAMPLE_COMPONENTS
1479     $AVUTIL_COMPONENTS
1480 "
1481
1482 EXAMPLE_LIST="
1483     avio_dir_cmd_example
1484     avio_reading_example
1485     decode_audio_example
1486     decode_video_example
1487     demuxing_decoding_example
1488     encode_audio_example
1489     encode_video_example
1490     extract_mvs_example
1491     filter_audio_example
1492     filtering_audio_example
1493     filtering_video_example
1494     http_multiclient_example
1495     hw_decode_example
1496     metadata_example
1497     muxing_example
1498     qsvdec_example
1499     remuxing_example
1500     resampling_audio_example
1501     scaling_video_example
1502     transcode_aac_example
1503     transcoding_example
1504 "
1505
1506 EXTERNAL_AUTODETECT_LIBRARY_LIST="
1507     alsa
1508     appkit
1509     avfoundation
1510     bzlib
1511     coreimage
1512     iconv
1513     jack
1514     libxcb
1515     libxcb_shm
1516     libxcb_shape
1517     libxcb_xfixes
1518     lzma
1519     schannel
1520     sdl2
1521     securetransport
1522     sndio
1523     xlib
1524     zlib
1525 "
1526
1527 EXTERNAL_LIBRARY_GPL_LIST="
1528     avisynth
1529     frei0r
1530     libcdio
1531     librubberband
1532     libvidstab
1533     libx264
1534     libx265
1535     libxavs
1536     libxvid
1537 "
1538
1539 EXTERNAL_LIBRARY_NONFREE_LIST="
1540     decklink
1541     libndi_newtek
1542     libfdk_aac
1543     openssl
1544 "
1545
1546 EXTERNAL_LIBRARY_VERSION3_LIST="
1547     gmp
1548     libopencore_amrnb
1549     libopencore_amrwb
1550     libvo_amrwbenc
1551 "
1552
1553 EXTERNAL_LIBRARY_GPLV3_LIST="
1554     libsmbclient
1555 "
1556
1557 EXTERNAL_LIBRARY_LIST="
1558     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1559     $EXTERNAL_LIBRARY_GPL_LIST
1560     $EXTERNAL_LIBRARY_NONFREE_LIST
1561     $EXTERNAL_LIBRARY_VERSION3_LIST
1562     $EXTERNAL_LIBRARY_GPLV3_LIST
1563     chromaprint
1564     gcrypt
1565     gnutls
1566     jni
1567     ladspa
1568     libass
1569     libbluray
1570     libbs2b
1571     libcaca
1572     libcelt
1573     libdc1394
1574     libdrm
1575     libflite
1576     libfontconfig
1577     libfreetype
1578     libfribidi
1579     libgme
1580     libgsm
1581     libiec61883
1582     libilbc
1583     libkvazaar
1584     libmodplug
1585     libmp3lame
1586     libmysofa
1587     libopencv
1588     libopenh264
1589     libopenjpeg
1590     libopenmpt
1591     libopus
1592     libpulse
1593     librsvg
1594     librtmp
1595     libshine
1596     libsmbclient
1597     libsnappy
1598     libsoxr
1599     libspeex
1600     libssh
1601     libtesseract
1602     libtheora
1603     libtwolame
1604     libv4l2
1605     libvmaf
1606     libvorbis
1607     libvpx
1608     libwavpack
1609     libwebp
1610     libxml2
1611     libzimg
1612     libzmq
1613     libzvbi
1614     mediacodec
1615     openal
1616     opencl
1617     opengl
1618 "
1619
1620 HWACCEL_AUTODETECT_LIBRARY_LIST="
1621     audiotoolbox
1622     crystalhd
1623     cuda
1624     cuvid
1625     d3d11va
1626     dxva2
1627     nvenc
1628     vaapi
1629     vda
1630     vdpau
1631     videotoolbox
1632     v4l2_m2m
1633     xvmc
1634 "
1635
1636 HWACCEL_LIBRARY_NONFREE_LIST="
1637     cuda_sdk
1638     libnpp
1639 "
1640
1641 HWACCEL_LIBRARY_LIST="
1642     $HWACCEL_AUTODETECT_LIBRARY_LIST
1643     $HWACCEL_LIBRARY_NONFREE_LIST
1644     libmfx
1645     mmal
1646     omx
1647 "
1648
1649 DOCUMENT_LIST="
1650     doc
1651     htmlpages
1652     manpages
1653     podpages
1654     txtpages
1655 "
1656
1657 FEATURE_LIST="
1658     ftrapv
1659     gray
1660     hardcoded_tables
1661     omx_rpi
1662     runtime_cpudetect
1663     safe_bitstream_reader
1664     shared
1665     small
1666     static
1667     swscale_alpha
1668 "
1669
1670 LIBRARY_LIST="
1671     avcodec
1672     avdevice
1673     avfilter
1674     avformat
1675     avresample
1676     avutil
1677     postproc
1678     swresample
1679     swscale
1680 "
1681
1682 LICENSE_LIST="
1683     gpl
1684     nonfree
1685     version3
1686 "
1687
1688 PROGRAM_LIST="
1689     ffplay
1690     ffprobe
1691     ffserver
1692     ffmpeg
1693 "
1694
1695 SUBSYSTEM_LIST="
1696     dct
1697     dwt
1698     error_resilience
1699     faan
1700     fast_unaligned
1701     fft
1702     lsp
1703     lzo
1704     mdct
1705     pixelutils
1706     network
1707     rdft
1708 "
1709
1710 # COMPONENT_LIST needs to come last to ensure correct dependency checking
1711 CONFIG_LIST="
1712     $DOCUMENT_LIST
1713     $EXAMPLE_LIST
1714     $EXTERNAL_LIBRARY_LIST
1715     $HWACCEL_LIBRARY_LIST
1716     $FEATURE_LIST
1717     $LICENSE_LIST
1718     $LIBRARY_LIST
1719     $PROGRAM_LIST
1720     $SUBSYSTEM_LIST
1721     autodetect
1722     fontconfig
1723     linux_perf
1724     memory_poisoning
1725     neon_clobber_test
1726     ossfuzz
1727     pic
1728     thumb
1729     valgrind_backtrace
1730     xmm_clobber_test
1731     $COMPONENT_LIST
1732 "
1733
1734 THREADS_LIST="
1735     pthreads
1736     os2threads
1737     w32threads
1738 "
1739
1740 ATOMICS_LIST="
1741     atomics_gcc
1742     atomics_suncc
1743     atomics_win32
1744 "
1745
1746 AUTODETECT_LIBS="
1747     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1748     $HWACCEL_AUTODETECT_LIBRARY_LIST
1749     $THREADS_LIST
1750 "
1751
1752 ARCH_LIST="
1753     aarch64
1754     alpha
1755     arm
1756     avr32
1757     avr32_ap
1758     avr32_uc
1759     bfin
1760     ia64
1761     m68k
1762     mips
1763     mips64
1764     parisc
1765     ppc
1766     ppc64
1767     s390
1768     sh4
1769     sparc
1770     sparc64
1771     tilegx
1772     tilepro
1773     tomi
1774     x86
1775     x86_32
1776     x86_64
1777 "
1778
1779 ARCH_EXT_LIST_ARM="
1780     armv5te
1781     armv6
1782     armv6t2
1783     armv8
1784     neon
1785     vfp
1786     vfpv3
1787     setend
1788 "
1789
1790 ARCH_EXT_LIST_MIPS="
1791     mipsfpu
1792     mips32r2
1793     mips32r5
1794     mips64r2
1795     mips32r6
1796     mips64r6
1797     mipsdsp
1798     mipsdspr2
1799     msa
1800 "
1801
1802 ARCH_EXT_LIST_LOONGSON="
1803     loongson2
1804     loongson3
1805     mmi
1806 "
1807
1808 ARCH_EXT_LIST_X86_SIMD="
1809     aesni
1810     amd3dnow
1811     amd3dnowext
1812     avx
1813     avx2
1814     fma3
1815     fma4
1816     mmx
1817     mmxext
1818     sse
1819     sse2
1820     sse3
1821     sse4
1822     sse42
1823     ssse3
1824     xop
1825 "
1826
1827 ARCH_EXT_LIST_PPC="
1828     altivec
1829     dcbzl
1830     ldbrx
1831     power8
1832     ppc4xx
1833     vsx
1834 "
1835
1836 ARCH_EXT_LIST_X86="
1837     $ARCH_EXT_LIST_X86_SIMD
1838     cpunop
1839     i686
1840 "
1841
1842 ARCH_EXT_LIST="
1843     $ARCH_EXT_LIST_ARM
1844     $ARCH_EXT_LIST_PPC
1845     $ARCH_EXT_LIST_X86
1846     $ARCH_EXT_LIST_MIPS
1847     $ARCH_EXT_LIST_LOONGSON
1848 "
1849
1850 ARCH_FEATURES="
1851     aligned_stack
1852     fast_64bit
1853     fast_clz
1854     fast_cmov
1855     local_aligned_8
1856     local_aligned_16
1857     local_aligned_32
1858     simd_align_16
1859     simd_align_32
1860 "
1861
1862 BUILTIN_LIST="
1863     atomic_cas_ptr
1864     machine_rw_barrier
1865     MemoryBarrier
1866     mm_empty
1867     rdtsc
1868     sarestart
1869     sem_timedwait
1870     sync_val_compare_and_swap
1871 "
1872 HAVE_LIST_CMDLINE="
1873     inline_asm
1874     symver
1875     x86asm
1876 "
1877
1878 HAVE_LIST_PUB="
1879     bigendian
1880     fast_unaligned
1881 "
1882
1883 HEADERS_LIST="
1884     altivec_h
1885     arpa_inet_h
1886     asm_types_h
1887     cdio_paranoia_h
1888     cdio_paranoia_paranoia_h
1889     cuda_h
1890     d3d11_h
1891     dispatch_dispatch_h
1892     dev_bktr_ioctl_bt848_h
1893     dev_bktr_ioctl_meteor_h
1894     dev_ic_bt8xx_h
1895     dev_video_bktr_ioctl_bt848_h
1896     dev_video_meteor_ioctl_meteor_h
1897     direct_h
1898     dirent_h
1899     dlfcn_h
1900     dxgidebug_h
1901     dxva_h
1902     ES2_gl_h
1903     gsm_h
1904     io_h
1905     mach_mach_time_h
1906     machine_ioctl_bt848_h
1907     machine_ioctl_meteor_h
1908     malloc_h
1909     opencv2_core_core_c_h
1910     openjpeg_2_2_openjpeg_h
1911     openjpeg_2_1_openjpeg_h
1912     openjpeg_2_0_openjpeg_h
1913     openjpeg_1_5_openjpeg_h
1914     OpenGL_gl3_h
1915     poll_h
1916     soundcard_h
1917     stdatomic_h
1918     sys_mman_h
1919     sys_param_h
1920     sys_resource_h
1921     sys_select_h
1922     sys_soundcard_h
1923     sys_time_h
1924     sys_un_h
1925     sys_videoio_h
1926     termios_h
1927     udplite_h
1928     unistd_h
1929     valgrind_valgrind_h
1930     windows_h
1931     winsock2_h
1932 "
1933
1934 INTRINSICS_LIST="
1935     intrinsics_neon
1936 "
1937
1938 COMPLEX_FUNCS="
1939     cabs
1940     cexp
1941 "
1942
1943 MATH_FUNCS="
1944     atanf
1945     atan2f
1946     cbrt
1947     cbrtf
1948     copysign
1949     cosf
1950     erf
1951     exp2
1952     exp2f
1953     expf
1954     hypot
1955     isfinite
1956     isinf
1957     isnan
1958     ldexpf
1959     llrint
1960     llrintf
1961     log2
1962     log2f
1963     log10f
1964     lrint
1965     lrintf
1966     powf
1967     rint
1968     round
1969     roundf
1970     sinf
1971     trunc
1972     truncf
1973 "
1974
1975 SYSTEM_FUNCS="
1976     access
1977     aligned_malloc
1978     arc4random
1979     clock_gettime
1980     closesocket
1981     CommandLineToArgvW
1982     CoTaskMemFree
1983     CryptGenRandom
1984     dlopen
1985     fcntl
1986     flt_lim
1987     fork
1988     getaddrinfo
1989     gethrtime
1990     getopt
1991     GetProcessAffinityMask
1992     GetProcessMemoryInfo
1993     GetProcessTimes
1994     getrusage
1995     GetSystemTimeAsFileTime
1996     gettimeofday
1997     glob
1998     glXGetProcAddress
1999     gmtime_r
2000     inet_aton
2001     isatty
2002     jack_port_get_latency_range
2003     kbhit
2004     LoadLibrary
2005     localtime_r
2006     lstat
2007     lzo1x_999_compress
2008     mach_absolute_time
2009     MapViewOfFile
2010     memalign
2011     mkstemp
2012     mmap
2013     mprotect
2014     nanosleep
2015     PeekNamedPipe
2016     posix_memalign
2017     pthread_cancel
2018     sched_getaffinity
2019     SetConsoleTextAttribute
2020     SetConsoleCtrlHandler
2021     setmode
2022     setrlimit
2023     Sleep
2024     strerror_r
2025     sysconf
2026     sysctl
2027     usleep
2028     UTGetOSTypeFromString
2029     VirtualAlloc
2030     wglGetProcAddress
2031 "
2032
2033 TOOLCHAIN_FEATURES="
2034     as_dn_directive
2035     as_fpu_directive
2036     as_func
2037     as_object_arch
2038     asm_mod_q
2039     attribute_may_alias
2040     attribute_packed
2041     blocks_extension
2042     ebp_available
2043     ebx_available
2044     gnu_as
2045     gnu_windres
2046     ibm_asm
2047     inline_asm_direct_symbol_refs
2048     inline_asm_labels
2049     inline_asm_nonlocal_labels
2050     pragma_deprecated
2051     rsync_contimeout
2052     symver_asm_label
2053     symver_gnu_asm
2054     vfp_args
2055     xform_asm
2056     xmm_clobbers
2057 "
2058
2059 TYPES_LIST="
2060     CONDITION_VARIABLE_Ptr
2061     socklen_t
2062     struct_addrinfo
2063     struct_group_source_req
2064     struct_ip_mreq_source
2065     struct_ipv6_mreq
2066     struct_msghdr_msg_flags
2067     struct_pollfd
2068     struct_rusage_ru_maxrss
2069     struct_sctp_event_subscribe
2070     struct_sockaddr_in6
2071     struct_sockaddr_sa_len
2072     struct_sockaddr_storage
2073     struct_stat_st_mtim_tv_nsec
2074     struct_v4l2_frmivalenum_discrete
2075 "
2076
2077 HAVE_LIST="
2078     $ARCH_EXT_LIST
2079     $(add_suffix _external $ARCH_EXT_LIST)
2080     $(add_suffix _inline   $ARCH_EXT_LIST)
2081     $ARCH_FEATURES
2082     $ATOMICS_LIST
2083     $BUILTIN_LIST
2084     $COMPLEX_FUNCS
2085     $HAVE_LIST_CMDLINE
2086     $HAVE_LIST_PUB
2087     $HEADERS_LIST
2088     $INTRINSICS_LIST
2089     $MATH_FUNCS
2090     $SYSTEM_FUNCS
2091     $THREADS_LIST
2092     $TOOLCHAIN_FEATURES
2093     $TYPES_LIST
2094     atomics_native
2095     dos_paths
2096     libc_msvcrt
2097     makeinfo
2098     makeinfo_html
2099     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
2100     perl
2101     pod2man
2102     section_data_rel_ro
2103     texi2html
2104     threads
2105     uwp
2106     vaapi_drm
2107     vaapi_x11
2108     vdpau_x11
2109     winrt
2110 "
2111
2112 # options emitted with CONFIG_ prefix but not available on the command line
2113 CONFIG_EXTRA="
2114     aandcttables
2115     ac3dsp
2116     audio_frame_queue
2117     audiodsp
2118     blockdsp
2119     bswapdsp
2120     cabac
2121     dirac_parse
2122     dvprofile
2123     exif
2124     faandct
2125     faanidct
2126     fdctdsp
2127     flacdsp
2128     fmtconvert
2129     frame_thread_encoder
2130     g722dsp
2131     golomb
2132     gplv3
2133     h263dsp
2134     h264chroma
2135     h264dsp
2136     h264parse
2137     h264pred
2138     h264qpel
2139     hevcparse
2140     hpeldsp
2141     huffman
2142     huffyuvdsp
2143     huffyuvencdsp
2144     idctdsp
2145     iirfilter
2146     mdct15
2147     intrax8
2148     iso_media
2149     ividsp
2150     jpegtables
2151     lgplv3
2152     libx262
2153     llauddsp
2154     llviddsp
2155     llvidencdsp
2156     lpc
2157     lzf
2158     me_cmp
2159     mpeg_er
2160     mpegaudio
2161     mpegaudiodsp
2162     mpegaudioheader
2163     mpegvideo
2164     mpegvideoenc
2165     mss34dsp
2166     pixblockdsp
2167     qpeldsp
2168     qsv
2169     qsvdec
2170     qsvenc
2171     rangecoder
2172     riffdec
2173     riffenc
2174     rtpdec
2175     rtpenc_chain
2176     rv34dsp
2177     sinewin
2178     snappy
2179     srtp
2180     startcode
2181     texturedsp
2182     texturedspenc
2183     tpeldsp
2184     vaapi_encode
2185     vc1dsp
2186     videodsp
2187     vp3dsp
2188     vp56dsp
2189     vp8dsp
2190     wma_freqs
2191     wmv2dsp
2192 "
2193
2194 CMDLINE_SELECT="
2195     $ARCH_EXT_LIST
2196     $CONFIG_LIST
2197     $HAVE_LIST_CMDLINE
2198     $THREADS_LIST
2199     asm
2200     cross_compile
2201     debug
2202     extra_warnings
2203     logging
2204     lto
2205     optimizations
2206     rpath
2207     stripping
2208 "
2209
2210 PATHS_LIST="
2211     bindir
2212     datadir
2213     docdir
2214     incdir
2215     libdir
2216     mandir
2217     pkgconfigdir
2218     prefix
2219     shlibdir
2220     install_name_dir
2221 "
2222
2223 CMDLINE_SET="
2224     $PATHS_LIST
2225     ar
2226     arch
2227     as
2228     assert_level
2229     build_suffix
2230     cc
2231     objcc
2232     cpu
2233     cross_prefix
2234     custom_allocator
2235     cxx
2236     dep_cc
2237     doxygen
2238     env
2239     extra_version
2240     gas
2241     host_cc
2242     host_cflags
2243     host_extralibs
2244     host_ld
2245     host_ldflags
2246     host_os
2247     ignore_tests
2248     install
2249     ld
2250     ln_s
2251     logfile
2252     malloc_prefix
2253     nm
2254     optflags
2255     nvccflags
2256     pkg_config
2257     pkg_config_flags
2258     progs_suffix
2259     random_seed
2260     ranlib
2261     samples
2262     strip
2263     sws_max_filter_size
2264     sysinclude
2265     sysroot
2266     target_exec
2267     target_os
2268     target_path
2269     target_samples
2270     tempprefix
2271     toolchain
2272     valgrind
2273     x86asmexe
2274 "
2275
2276 CMDLINE_APPEND="
2277     extra_cflags
2278     extra_cxxflags
2279     extra_objcflags
2280     host_cppflags
2281 "
2282
2283 # code dependency declarations
2284
2285 # architecture extensions
2286
2287 armv5te_deps="arm"
2288 armv6_deps="arm"
2289 armv6t2_deps="arm"
2290 armv8_deps="aarch64"
2291 neon_deps_any="aarch64 arm"
2292 intrinsics_neon_deps="neon"
2293 vfp_deps_any="aarch64 arm"
2294 vfpv3_deps="vfp"
2295 setend_deps="arm"
2296
2297 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2298
2299 loongson2_deps="mips"
2300 loongson3_deps="mips"
2301 mipsfpu_deps="mips"
2302 mipsdsp_deps="mips"
2303 mipsdspr2_deps="mips"
2304 mips32r2_deps="mips"
2305 mips32r5_deps="mips"
2306 mips32r6_deps="mips"
2307 mips64r2_deps="mips"
2308 mips64r6_deps="mips"
2309 msa_deps="mipsfpu"
2310 mmi_deps="mips"
2311
2312 altivec_deps="ppc"
2313 dcbzl_deps="ppc"
2314 ldbrx_deps="ppc"
2315 ppc4xx_deps="ppc"
2316 vsx_deps="altivec"
2317 power8_deps="vsx"
2318
2319 cpunop_deps="i686"
2320 x86_64_select="i686"
2321 x86_64_suggest="fast_cmov"
2322
2323 amd3dnow_deps="mmx"
2324 amd3dnowext_deps="amd3dnow"
2325 i686_deps="x86"
2326 mmx_deps="x86"
2327 mmxext_deps="mmx"
2328 sse_deps="mmxext"
2329 sse2_deps="sse"
2330 sse3_deps="sse2"
2331 ssse3_deps="sse3"
2332 sse4_deps="ssse3"
2333 sse42_deps="sse4"
2334 aesni_deps="sse42"
2335 avx_deps="sse42"
2336 xop_deps="avx"
2337 fma3_deps="avx"
2338 fma4_deps="avx"
2339 avx2_deps="avx"
2340
2341 mmx_external_deps="x86asm"
2342 mmx_inline_deps="inline_asm"
2343 mmx_suggest="mmx_external mmx_inline"
2344
2345 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2346     eval dep=\$${ext}_deps
2347     eval ${ext}_external_deps='"${dep}_external"'
2348     eval ${ext}_inline_deps='"${dep}_inline"'
2349     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2350 done
2351
2352 aligned_stack_if_any="aarch64 ppc x86"
2353 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2354 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2355 fast_unaligned_if_any="aarch64 ppc x86"
2356 simd_align_16_if_any="altivec neon sse"
2357 simd_align_32_if_any="avx"
2358
2359 # system capabilities
2360 symver_if_any="symver_asm_label symver_gnu_asm"
2361 valgrind_backtrace_deps="!optimizations valgrind_valgrind_h"
2362
2363 # threading support
2364 atomics_gcc_if="sync_val_compare_and_swap"
2365 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2366 atomics_win32_if="MemoryBarrier"
2367 atomics_native_if_any="$ATOMICS_LIST"
2368 w32threads_deps="atomics_native"
2369 threads_if_any="$THREADS_LIST"
2370
2371 # subsystems
2372 dct_select="rdft"
2373 dirac_parse_select="golomb"
2374 error_resilience_select="me_cmp"
2375 faandct_deps="faan fdctdsp"
2376 faanidct_deps="faan idctdsp"
2377 h264dsp_select="startcode"
2378 hevcparse_select="golomb"
2379 frame_thread_encoder_deps="encoders threads"
2380 intrax8_select="blockdsp idctdsp"
2381 mdct_select="fft"
2382 mdct15_select="fft"
2383 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2384 mpeg_er_select="error_resilience"
2385 mpegaudio_select="mpegaudiodsp mpegaudioheader"
2386 mpegaudiodsp_select="dct"
2387 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2388 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
2389 vc1dsp_select="h264chroma qpeldsp startcode"
2390 rdft_select="fft"
2391
2392 # decoders / encoders
2393 aac_decoder_select="mdct15 mdct sinewin"
2394 aac_fixed_decoder_select="mdct sinewin"
2395 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2396 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2397 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2398 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2399 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2400 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2401 adpcm_g722_decoder_select="g722dsp"
2402 adpcm_g722_encoder_select="g722dsp"
2403 aic_decoder_select="golomb idctdsp"
2404 alac_encoder_select="lpc"
2405 als_decoder_select="bswapdsp"
2406 amrnb_decoder_select="lsp"
2407 amrwb_decoder_select="lsp"
2408 amv_decoder_select="sp5x_decoder exif"
2409 amv_encoder_select="aandcttables jpegtables mpegvideoenc"
2410 ape_decoder_select="bswapdsp llauddsp"
2411 apng_decoder_select="zlib"
2412 apng_encoder_select="llvidencdsp zlib"
2413 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2414 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2415 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2416 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2417 atrac1_decoder_select="mdct sinewin"
2418 atrac3_decoder_select="mdct"
2419 atrac3p_decoder_select="mdct sinewin"
2420 avrn_decoder_select="exif jpegtables"
2421 bink_decoder_select="blockdsp hpeldsp"
2422 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2423 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2424 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2425 clearvideo_decoder_select="idctdsp"
2426 cllc_decoder_select="bswapdsp"
2427 comfortnoise_encoder_select="lpc"
2428 cook_decoder_select="audiodsp mdct sinewin"
2429 cscd_decoder_select="lzo"
2430 cscd_decoder_suggest="zlib"
2431 dca_decoder_select="mdct"
2432 dds_decoder_select="texturedsp"
2433 dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
2434 dnxhd_decoder_select="blockdsp idctdsp"
2435 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2436 dolby_e_decoder_select="mdct"
2437 dvvideo_decoder_select="dvprofile idctdsp"
2438 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2439 dxa_decoder_select="zlib"
2440 dxv_decoder_select="lzf texturedsp"
2441 eac3_decoder_select="ac3_decoder"
2442 eac3_encoder_select="ac3_encoder"
2443 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2444 eatgq_decoder_select="aandcttables"
2445 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2446 exr_decoder_select="zlib"
2447 ffv1_decoder_select="rangecoder"
2448 ffv1_encoder_select="rangecoder"
2449 ffvhuff_decoder_select="huffyuv_decoder"
2450 ffvhuff_encoder_select="huffyuv_encoder"
2451 fic_decoder_select="golomb"
2452 flac_decoder_select="flacdsp"
2453 flac_encoder_select="bswapdsp flacdsp lpc"
2454 flashsv2_decoder_select="zlib"
2455 flashsv2_encoder_select="zlib"
2456 flashsv_decoder_select="zlib"
2457 flashsv_encoder_select="zlib"
2458 flv_decoder_select="h263_decoder"
2459 flv_encoder_select="h263_encoder"
2460 fourxm_decoder_select="blockdsp bswapdsp"
2461 fraps_decoder_select="bswapdsp huffman"
2462 g2m_decoder_select="blockdsp idctdsp jpegtables zlib"
2463 g729_decoder_select="audiodsp"
2464 h261_decoder_select="mpegvideo"
2465 h261_encoder_select="aandcttables mpegvideoenc"
2466 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2467 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2468 h263i_decoder_select="h263_decoder"
2469 h263p_decoder_select="h263_decoder"
2470 h263p_encoder_select="h263_encoder"
2471 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
2472 h264_decoder_suggest="error_resilience"
2473 hap_decoder_select="snappy texturedsp"
2474 hap_encoder_deps="libsnappy"
2475 hap_encoder_select="texturedspenc"
2476 hevc_decoder_select="bswapdsp cabac golomb hevcparse videodsp"
2477 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2478 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llvidencdsp"
2479 iac_decoder_select="imc_decoder"
2480 imc_decoder_select="bswapdsp fft mdct sinewin"
2481 indeo3_decoder_select="hpeldsp"
2482 indeo4_decoder_select="ividsp"
2483 indeo5_decoder_select="ividsp"
2484 interplay_video_decoder_select="hpeldsp"
2485 jpegls_decoder_select="mjpeg_decoder"
2486 jv_decoder_select="blockdsp"
2487 lagarith_decoder_select="llviddsp"
2488 ljpeg_encoder_select="aandcttables idctdsp jpegtables mpegvideoenc"
2489 magicyuv_decoder_select="llviddsp"
2490 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2491 metasound_decoder_select="lsp mdct sinewin"
2492 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2493 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2494 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2495 mjpegb_decoder_select="mjpeg_decoder"
2496 mlp_decoder_select="mlp_parser"
2497 mlp_encoder_select="lpc"
2498 motionpixels_decoder_select="bswapdsp"
2499 mp1_decoder_select="mpegaudio"
2500 mp1float_decoder_select="mpegaudio"
2501 mp2_decoder_select="mpegaudio"
2502 mp2float_decoder_select="mpegaudio"
2503 mp3_decoder_select="mpegaudio"
2504 mp3adu_decoder_select="mpegaudio"
2505 mp3adufloat_decoder_select="mpegaudio"
2506 mp3float_decoder_select="mpegaudio"
2507 mp3on4_decoder_select="mpegaudio"
2508 mp3on4float_decoder_select="mpegaudio"
2509 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2510 mpc8_decoder_select="mpegaudiodsp"
2511 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
2512 mpeg_xvmc_decoder_select="mpeg2video_decoder"
2513 mpegvideo_decoder_select="mpegvideo"
2514 mpeg1video_decoder_select="mpegvideo"
2515 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2516 mpeg2video_decoder_select="mpegvideo"
2517 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2518 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2519 mpeg4_encoder_select="h263_encoder"
2520 msa1_decoder_select="mss34dsp"
2521 mscc_decoder_select="zlib"
2522 msmpeg4v1_decoder_select="h263_decoder"
2523 msmpeg4v2_decoder_select="h263_decoder"
2524 msmpeg4v2_encoder_select="h263_encoder"
2525 msmpeg4v3_decoder_select="h263_decoder"
2526 msmpeg4v3_encoder_select="h263_encoder"
2527 mss2_decoder_select="mpegvideo qpeldsp vc1_decoder"
2528 mts2_decoder_select="mss34dsp"
2529 mxpeg_decoder_select="mjpeg_decoder"
2530 nellymoser_decoder_select="mdct sinewin"
2531 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2532 nuv_decoder_select="idctdsp lzo"
2533 on2avc_decoder_select="mdct"
2534 opus_decoder_deps="swresample"
2535 opus_decoder_select="mdct15"
2536 opus_encoder_select="audio_frame_queue mdct15"
2537 png_decoder_select="zlib"
2538 png_encoder_select="llvidencdsp zlib"
2539 prores_decoder_select="blockdsp idctdsp"
2540 prores_encoder_select="fdctdsp"
2541 qcelp_decoder_select="lsp"
2542 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2543 ra_144_decoder_select="audiodsp"
2544 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2545 ralf_decoder_select="golomb"
2546 rawvideo_decoder_select="bswapdsp"
2547 rscc_decoder_select="zlib"
2548 rtjpeg_decoder_select="me_cmp"
2549 rv10_decoder_select="h263_decoder"
2550 rv10_encoder_select="h263_encoder"
2551 rv20_decoder_select="h263_decoder"
2552 rv20_encoder_select="h263_encoder"
2553 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2554 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2555 screenpresso_decoder_select="zlib"
2556 shorten_decoder_select="bswapdsp"
2557 sipr_decoder_select="lsp"
2558 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2559 snow_encoder_select="aandcttables dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2560 sonic_decoder_select="golomb rangecoder"
2561 sonic_encoder_select="golomb rangecoder"
2562 sonic_ls_encoder_select="golomb rangecoder"
2563 sp5x_decoder_select="mjpeg_decoder"
2564 srgc_decoder_select="zlib"
2565 svq1_decoder_select="hpeldsp"
2566 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2567 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2568 svq3_decoder_suggest="zlib"
2569 tak_decoder_select="audiodsp"
2570 tdsc_decoder_select="zlib mjpeg_decoder"
2571 theora_decoder_select="vp3_decoder"
2572 thp_decoder_select="mjpeg_decoder"
2573 tiff_decoder_suggest="zlib lzma"
2574 tiff_encoder_suggest="zlib"
2575 truehd_decoder_select="mlp_parser"
2576 truehd_encoder_select="lpc"
2577 truemotion2_decoder_select="bswapdsp"
2578 truespeech_decoder_select="bswapdsp"
2579 tscc_decoder_select="zlib"
2580 twinvq_decoder_select="mdct lsp sinewin"
2581 txd_decoder_select="texturedsp"
2582 utvideo_decoder_select="bswapdsp llviddsp"
2583 utvideo_encoder_select="bswapdsp huffman llvidencdsp"
2584 vble_decoder_select="llviddsp"
2585 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 mpegvideo vc1dsp"
2586 vc1_qsv_decoder_deps="libmfx"
2587 vc1_qsv_decoder_select="qsvdec vc1_qsv_hwaccel vc1_parser"
2588 vc1image_decoder_select="vc1_decoder"
2589 vorbis_decoder_select="mdct"
2590 vorbis_encoder_select="mdct"
2591 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2592 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2593 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2594 vp6a_decoder_select="vp6_decoder"
2595 vp6f_decoder_select="vp6_decoder"
2596 vp7_decoder_select="h264pred videodsp vp8dsp"
2597 vp8_decoder_select="h264pred videodsp vp8dsp"
2598 vp9_decoder_select="videodsp vp9_parser"
2599 webp_decoder_select="vp8_decoder exif"
2600 wmalossless_decoder_select="llauddsp"
2601 wmapro_decoder_select="mdct sinewin wma_freqs"
2602 wmav1_decoder_select="mdct sinewin wma_freqs"
2603 wmav1_encoder_select="mdct sinewin wma_freqs"
2604 wmav2_decoder_select="mdct sinewin wma_freqs"
2605 wmav2_encoder_select="mdct sinewin wma_freqs"
2606 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2607 wmv1_decoder_select="h263_decoder"
2608 wmv1_encoder_select="h263_encoder"
2609 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2610 wmv2_encoder_select="h263_encoder wmv2dsp"
2611 wmv3_decoder_select="vc1_decoder"
2612 wmv3image_decoder_select="wmv3_decoder"
2613 xma1_decoder_select="wmapro_decoder"
2614 xma2_decoder_select="wmapro_decoder"
2615 zerocodec_decoder_select="zlib"
2616 zlib_decoder_select="zlib"
2617 zlib_encoder_select="zlib"
2618 zmbv_decoder_select="zlib"
2619 zmbv_encoder_select="zlib"
2620
2621 # hardware accelerators
2622 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2623 cuda_deps_any="dlopen LoadLibrary"
2624 cuvid_deps="cuda"
2625 d3d11va_deps="d3d11_h dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2626 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode ole32"
2627 dxva2_extralibs="-luser32"
2628 vda_framework_deps="VideoDecodeAcceleration_VDADecoder_h blocks_extension"
2629 vda_framework_extralibs="-framework VideoDecodeAcceleration"
2630 vda_deps="vda_framework pthreads"
2631 vda_extralibs="-framework CoreFoundation -framework QuartzCore"
2632 videotoolbox_hwaccel_deps="videotoolbox pthreads"
2633 videotoolbox_hwaccel_extralibs="-framework QuartzCore"
2634 xvmc_deps="X11_extensions_XvMClib_h"
2635
2636 h263_vaapi_hwaccel_deps="vaapi"
2637 h263_vaapi_hwaccel_select="h263_decoder"
2638 h263_videotoolbox_hwaccel_deps="videotoolbox"
2639 h263_videotoolbox_hwaccel_select="h263_decoder"
2640 h264_cuvid_hwaccel_deps="cuda cuvid"
2641 h264_cuvid_hwaccel_select="h264_cuvid_decoder"
2642 h264_d3d11va_hwaccel_deps="d3d11va"
2643 h264_d3d11va_hwaccel_select="h264_decoder"
2644 h264_d3d11va2_hwaccel_deps="d3d11va"
2645 h264_d3d11va2_hwaccel_select="h264_decoder"
2646 h264_dxva2_hwaccel_deps="dxva2"
2647 h264_dxva2_hwaccel_select="h264_decoder"
2648 h264_mediacodec_hwaccel_deps="mediacodec"
2649 h264_mmal_hwaccel_deps="mmal"
2650 h264_qsv_hwaccel_deps="libmfx"
2651 h264_vaapi_hwaccel_deps="vaapi"
2652 h264_vaapi_hwaccel_select="h264_decoder"
2653 h264_vda_hwaccel_deps="vda"
2654 h264_vda_hwaccel_select="h264_decoder"
2655 h264_vda_old_hwaccel_deps="vda"
2656 h264_vda_old_hwaccel_select="h264_decoder"
2657 h264_vdpau_hwaccel_deps="vdpau"
2658 h264_vdpau_hwaccel_select="h264_decoder"
2659 h264_videotoolbox_hwaccel_deps="videotoolbox"
2660 h264_videotoolbox_hwaccel_select="h264_decoder"
2661 hevc_cuvid_hwaccel_deps="cuda cuvid"
2662 hevc_cuvid_hwaccel_select="hevc_cuvid_decoder"
2663 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2664 hevc_d3d11va_hwaccel_select="hevc_decoder"
2665 hevc_mediacodec_hwaccel_deps="mediacodec"
2666 hevc_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2667 hevc_d3d11va2_hwaccel_select="hevc_decoder"
2668 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2669 hevc_dxva2_hwaccel_select="hevc_decoder"
2670 hevc_qsv_hwaccel_deps="libmfx"
2671 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2672 hevc_vaapi_hwaccel_select="hevc_decoder"
2673 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2674 hevc_vdpau_hwaccel_select="hevc_decoder"
2675 mjpeg_cuvid_hwaccel_deps="cuda cuvid"
2676 mjpeg_cuvid_hwaccel_select="mjpeg_cuvid_decoder"
2677 mpeg_xvmc_hwaccel_deps="xvmc"
2678 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2679 mpeg1_cuvid_hwaccel_deps="cuda cuvid"
2680 mpeg1_cuvid_hwaccel_select="mpeg1_cuvid_decoder"
2681 mpeg1_vdpau_hwaccel_deps="vdpau"
2682 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2683 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2684 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2685 mpeg1_xvmc_hwaccel_deps="xvmc"
2686 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2687 mpeg2_cuvid_hwaccel_deps="cuda cuvid"
2688 mpeg2_cuvid_hwaccel_select="mpeg2_cuvid_decoder"
2689 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2690 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2691 mpeg2_d3d11va2_hwaccel_deps="d3d11va"
2692 mpeg2_d3d11va2_hwaccel_select="mpeg2video_decoder"
2693 mpeg2_dxva2_hwaccel_deps="dxva2"
2694 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2695 mpeg2_mediacodec_hwaccel_deps="mediacodec"
2696 mpeg2_mmal_hwaccel_deps="mmal"
2697 mpeg2_qsv_hwaccel_deps="libmfx"
2698 mpeg2_qsv_hwaccel_select="qsvdec_mpeg2"
2699 mpeg2_vaapi_hwaccel_deps="vaapi"
2700 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2701 mpeg2_vdpau_hwaccel_deps="vdpau"
2702 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2703 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2704 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2705 mpeg2_xvmc_hwaccel_deps="xvmc"
2706 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2707 mpeg4_cuvid_hwaccel_deps="cuda cuvid"
2708 mpeg4_cuvid_hwaccel_select="mpeg4_cuvid_decoder"
2709 mpeg4_mediacodec_hwaccel_deps="mediacodec"
2710 mpeg4_mmal_hwaccel_deps="mmal"
2711 mpeg4_vaapi_hwaccel_deps="vaapi"
2712 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2713 mpeg4_vdpau_hwaccel_deps="vdpau"
2714 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2715 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2716 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2717 vc1_cuvid_hwaccel_deps="cuda cuvid"
2718 vc1_cuvid_hwaccel_select="vc1_cuvid_decoder"
2719 vc1_d3d11va_hwaccel_deps="d3d11va"
2720 vc1_d3d11va_hwaccel_select="vc1_decoder"
2721 vc1_d3d11va2_hwaccel_deps="d3d11va"
2722 vc1_d3d11va2_hwaccel_select="vc1_decoder"
2723 vc1_dxva2_hwaccel_deps="dxva2"
2724 vc1_dxva2_hwaccel_select="vc1_decoder"
2725 vc1_mmal_hwaccel_deps="mmal"
2726 vc1_qsv_hwaccel_deps="libmfx"
2727 vc1_qsv_hwaccel_select="qsvdec_vc1"
2728 vc1_vaapi_hwaccel_deps="vaapi"
2729 vc1_vaapi_hwaccel_select="vc1_decoder"
2730 vc1_vdpau_hwaccel_deps="vdpau"
2731 vc1_vdpau_hwaccel_select="vc1_decoder"
2732 vp8_cuvid_hwaccel_deps="cuda cuvid"
2733 vp8_cuvid_hwaccel_select="vp8_cuvid_decoder"
2734 vp9_cuvid_hwaccel_deps="cuda cuvid"
2735 vp9_cuvid_hwaccel_select="vp9_cuvid_decoder"
2736 vp8_mediacodec_hwaccel_deps="mediacodec"
2737 vp8_qsv_hwaccel_deps="libmfx"
2738 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2739 vp9_d3d11va_hwaccel_select="vp9_decoder"
2740 vp9_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2741 vp9_d3d11va2_hwaccel_select="vp9_decoder"
2742 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
2743 vp9_dxva2_hwaccel_select="vp9_decoder"
2744 vp9_mediacodec_hwaccel_deps="mediacodec"
2745 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9_bit_depth"
2746 vp9_vaapi_hwaccel_select="vp9_decoder"
2747 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2748 wmv3_d3d11va2_hwaccel_select="vc1_d3d11va2_hwaccel"
2749 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2750 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2751 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2752
2753 # hardware-accelerated codecs
2754 omx_deps="dlopen pthreads"
2755 omx_extralibs='$ldl'
2756 omx_rpi_select="omx"
2757 qsvdec_select="qsv"
2758 qsvenc_select="qsv"
2759 vaapi_encode_deps="vaapi"
2760 v4l2_m2m_deps_any="linux_videodev2_h"
2761
2762 hwupload_cuda_filter_deps="cuda"
2763 scale_npp_filter_deps="cuda libnpp"
2764 scale_cuda_filter_deps="cuda_sdk"
2765 thumbnail_cuda_filter_deps="cuda_sdk"
2766
2767 nvenc_deps="cuda"
2768 nvenc_deps_any="dlopen LoadLibrary"
2769 nvenc_encoder_deps="nvenc"
2770
2771 h263_v4l2m2m_decoder_deps="v4l2_m2m h263_v4l2_m2m"
2772 h263_v4l2m2m_encoder_deps="v4l2_m2m h263_v4l2_m2m"
2773 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2774 h264_cuvid_decoder_deps="cuda cuvid"
2775 h264_cuvid_decoder_select="h264_mp4toannexb_bsf"
2776 h264_mediacodec_decoder_deps="mediacodec"
2777 h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
2778 h264_mmal_decoder_deps="mmal"
2779 h264_nvenc_encoder_deps="nvenc"
2780 h264_omx_encoder_deps="omx"
2781 h264_qsv_decoder_deps="libmfx"
2782 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2783 h264_qsv_encoder_deps="libmfx"
2784 h264_qsv_encoder_select="qsvenc"
2785 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2786 h264_vaapi_encoder_select="vaapi_encode golomb"
2787 h264_vda_decoder_deps="vda"
2788 h264_vda_decoder_select="h264_decoder"
2789 h264_vdpau_decoder_deps="vdpau"
2790 h264_vdpau_decoder_select="h264_decoder"
2791 h264_v4l2m2m_decoder_deps="v4l2_m2m h264_v4l2_m2m"
2792 h264_v4l2m2m_encoder_deps="v4l2_m2m h264_v4l2_m2m"
2793 hevc_cuvid_decoder_deps="cuda cuvid"
2794 hevc_cuvid_decoder_select="hevc_mp4toannexb_bsf"
2795 hevc_mediacodec_decoder_deps="mediacodec"
2796 hevc_mediacodec_decoder_select="hevc_mp4toannexb_bsf hevc_parser"
2797 hevc_nvenc_encoder_deps="nvenc"
2798 hevc_qsv_decoder_deps="libmfx"
2799 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec hevc_qsv_hwaccel"
2800 hevc_qsv_encoder_deps="libmfx"
2801 hevc_qsv_encoder_select="hevcparse qsvenc"
2802 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2803 hevc_vaapi_encoder_select="vaapi_encode golomb"
2804 hevc_v4l2m2m_decoder_deps="v4l2_m2m hevc_v4l2_m2m"
2805 hevc_v4l2m2m_encoder_deps="v4l2_m2m hevc_v4l2_m2m"
2806 mjpeg_cuvid_decoder_deps="cuda cuvid"
2807 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2808 mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
2809 mpeg1_cuvid_decoder_deps="cuda cuvid"
2810 mpeg1_vdpau_decoder_deps="vdpau"
2811 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
2812 mpeg1_v4l2m2m_decoder_deps="v4l2_m2m mpeg1_v4l2_m2m"
2813 mpeg2_crystalhd_decoder_select="crystalhd"
2814 mpeg2_cuvid_decoder_deps="cuda cuvid"
2815 mpeg2_mmal_decoder_deps="mmal"
2816 mpeg2_mediacodec_decoder_deps="mediacodec"
2817 mpeg2_qsv_decoder_deps="libmfx"
2818 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel"
2819 mpeg2_qsv_encoder_deps="libmfx"
2820 mpeg2_qsv_encoder_select="qsvenc"
2821 mpeg2_vaapi_encoder_deps="VAEncPictureParameterBufferMPEG2"
2822 mpeg2_vaapi_encoder_select="vaapi_encode"
2823 mpeg2_v4l2m2m_decoder_deps="v4l2_m2m mpeg2_v4l2_m2m"
2824 mpeg4_crystalhd_decoder_select="crystalhd"
2825 mpeg4_cuvid_decoder_deps="cuda cuvid"
2826 mpeg4_mediacodec_decoder_deps="mediacodec"
2827 mpeg4_mmal_decoder_deps="mmal"
2828 mpeg4_omx_encoder_deps="omx"
2829 mpeg4_vdpau_decoder_deps="vdpau"
2830 mpeg4_vdpau_decoder_select="mpeg4_decoder"
2831 mpeg4_v4l2m2m_decoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
2832 mpeg4_v4l2m2m_encoder_deps="v4l2_m2m mpeg4_v4l2_m2m"
2833 mpeg_vdpau_decoder_deps="vdpau"
2834 mpeg_vdpau_decoder_select="mpeg2video_decoder"
2835 msmpeg4_crystalhd_decoder_select="crystalhd"
2836 nvenc_h264_encoder_select="h264_nvenc_encoder"
2837 nvenc_hevc_encoder_select="hevc_nvenc_encoder"
2838 vc1_crystalhd_decoder_select="crystalhd"
2839 vc1_cuvid_decoder_deps="cuda cuvid"
2840 vc1_mmal_decoder_deps="mmal"
2841 vc1_vdpau_decoder_deps="vdpau"
2842 vc1_vdpau_decoder_select="vc1_decoder"
2843 vc1_v4l2m2m_decoder_deps="v4l2_m2m vc1_v4l2_m2m"
2844 vp8_cuvid_decoder_deps="cuda cuvid"
2845 vp8_mediacodec_decoder_deps="mediacodec"
2846 vp8_qsv_decoder_deps="libmfx"
2847 vp8_qsv_decoder_select="qsvdec vp8_qsv_hwaccel vp8_parser"
2848 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
2849 vp8_vaapi_encoder_select="vaapi_encode"
2850 vp8_v4l2m2m_decoder_deps="v4l2_m2m vp8_v4l2_m2m"
2851 vp8_v4l2m2m_encoder_deps="v4l2_m2m vp8_v4l2_m2m"
2852 vp9_cuvid_decoder_deps="cuda cuvid"
2853 vp9_mediacodec_decoder_deps="mediacodec"
2854 vp9_vaapi_encoder_deps="VAEncPictureParameterBufferVP9"
2855 vp9_vaapi_encoder_select="vaapi_encode"
2856 vp9_v4l2m2m_decoder_deps="v4l2_m2m vp9_v4l2_m2m"
2857 wmv3_crystalhd_decoder_select="crystalhd"
2858 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
2859
2860 # parsers
2861 h264_parser_select="golomb h264dsp h264parse"
2862 hevc_parser_select="hevcparse"
2863 mpegaudio_parser_select="mpegaudioheader"
2864 mpegvideo_parser_select="mpegvideo"
2865 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
2866 vc1_parser_select="vc1dsp"
2867
2868 # bitstream_filters
2869 mjpeg2jpeg_bsf_select="jpegtables"
2870
2871 # external libraries
2872 aac_at_decoder_deps="audiotoolbox"
2873 ac3_at_decoder_deps="audiotoolbox"
2874 ac3_at_decoder_select="ac3_parser"
2875 adpcm_ima_qt_at_decoder_deps="audiotoolbox"
2876 alac_at_decoder_deps="audiotoolbox"
2877 amr_nb_at_decoder_deps="audiotoolbox"
2878 avisynth_deps_any="dlopen LoadLibrary"
2879 avisynth_demuxer_deps="avisynth"
2880 avisynth_demuxer_select="riffdec"
2881 eac3_at_decoder_deps="audiotoolbox"
2882 eac3_at_decoder_select="ac3_parser"
2883 gsm_ms_at_decoder_deps="audiotoolbox"
2884 ilbc_at_decoder_deps="audiotoolbox"
2885 mp1_at_decoder_deps="audiotoolbox"
2886 mp2_at_decoder_deps="audiotoolbox"
2887 mp3_at_decoder_deps="audiotoolbox"
2888 mp1_at_decoder_select="mpegaudioheader"
2889 mp2_at_decoder_select="mpegaudioheader"
2890 mp3_at_decoder_select="mpegaudioheader"
2891 pcm_alaw_at_decoder_deps="audiotoolbox"
2892 pcm_mulaw_at_decoder_deps="audiotoolbox"
2893 qdmc_at_decoder_deps="audiotoolbox"
2894 qdm2_at_decoder_deps="audiotoolbox"
2895 aac_at_encoder_deps="audiotoolbox"
2896 aac_at_encoder_select="audio_frame_queue"
2897 alac_at_encoder_deps="audiotoolbox"
2898 alac_at_encoder_select="audio_frame_queue"
2899 ilbc_at_encoder_deps="audiotoolbox"
2900 ilbc_at_encoder_select="audio_frame_queue"
2901 pcm_alaw_at_encoder_deps="audiotoolbox"
2902 pcm_alaw_at_encoder_select="audio_frame_queue"
2903 pcm_mulaw_at_encoder_deps="audiotoolbox"
2904 pcm_mulaw_at_encoder_select="audio_frame_queue"
2905 chromaprint_muxer_deps="chromaprint"
2906 h264_videotoolbox_encoder_deps="videotoolbox_encoder pthreads"
2907 libcelt_decoder_deps="libcelt"
2908 libfdk_aac_decoder_deps="libfdk_aac"
2909 libfdk_aac_encoder_deps="libfdk_aac"
2910 libfdk_aac_encoder_select="audio_frame_queue"
2911 libgme_demuxer_deps="libgme"
2912 libgsm_decoder_deps="libgsm"
2913 libgsm_encoder_deps="libgsm"
2914 libgsm_ms_decoder_deps="libgsm"
2915 libgsm_ms_encoder_deps="libgsm"
2916 libilbc_decoder_deps="libilbc"
2917 libilbc_encoder_deps="libilbc"
2918 libkvazaar_encoder_deps="libkvazaar"
2919 libmodplug_demuxer_deps="libmodplug"
2920 libmp3lame_encoder_deps="libmp3lame"
2921 libmp3lame_encoder_select="audio_frame_queue mpegaudioheader"
2922 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2923 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2924 libopencore_amrnb_encoder_select="audio_frame_queue"
2925 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2926 libopenh264_decoder_deps="libopenh264"
2927 libopenh264_decoder_select="h264_mp4toannexb_bsf"
2928 libopenh264_encoder_deps="libopenh264"
2929 libopenjpeg_decoder_deps="libopenjpeg"
2930 libopenjpeg_encoder_deps="libopenjpeg"
2931 libopenmpt_demuxer_deps="libopenmpt"
2932 libopus_decoder_deps="libopus"
2933 libopus_encoder_deps="libopus"
2934 libopus_encoder_select="audio_frame_queue"
2935 librsvg_decoder_deps="librsvg"
2936 libshine_encoder_deps="libshine"
2937 libshine_encoder_select="audio_frame_queue"
2938 libspeex_decoder_deps="libspeex"
2939 libspeex_encoder_deps="libspeex"
2940 libspeex_encoder_select="audio_frame_queue"
2941 libtheora_encoder_deps="libtheora"
2942 libtwolame_encoder_deps="libtwolame"
2943 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2944 libvorbis_decoder_deps="libvorbis"
2945 libvorbis_encoder_deps="libvorbis"
2946 libvorbis_encoder_select="audio_frame_queue"
2947 libvpx_vp8_decoder_deps="libvpx"
2948 libvpx_vp8_encoder_deps="libvpx"
2949 libvpx_vp9_decoder_deps="libvpx"
2950 libvpx_vp9_encoder_deps="libvpx"
2951 libwavpack_encoder_deps="libwavpack"
2952 libwavpack_encoder_select="audio_frame_queue"
2953 libwebp_encoder_deps="libwebp"
2954 libwebp_anim_encoder_deps="libwebp"
2955 libx262_encoder_deps="libx262"
2956 libx264_encoder_deps="libx264"
2957 libx264rgb_encoder_deps="libx264 x264_csp_bgr"
2958 libx264rgb_encoder_select="libx264_encoder"
2959 libx265_encoder_deps="libx265"
2960 libxavs_encoder_deps="libxavs"
2961 libxvid_encoder_deps="libxvid"
2962 libzvbi_teletext_decoder_deps="libzvbi"
2963 videotoolbox_extralibs="-framework CoreFoundation -framework VideoToolbox -framework CoreMedia -framework CoreVideo"
2964 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
2965 videotoolbox_encoder_suggest="vda_framework"
2966
2967 # demuxers / muxers
2968 ac3_demuxer_select="ac3_parser"
2969 aiff_muxer_select="iso_media"
2970 asf_demuxer_select="riffdec"
2971 asf_o_demuxer_select="riffdec"
2972 asf_muxer_select="riffenc"
2973 asf_stream_muxer_select="asf_muxer"
2974 avi_demuxer_select="iso_media riffdec exif"
2975 avi_muxer_select="riffenc"
2976 caf_demuxer_select="iso_media riffdec"
2977 caf_muxer_select="iso_media"
2978 dash_muxer_select="mp4_muxer"
2979 dash_demuxer_deps="libxml2"
2980 dirac_demuxer_select="dirac_parser"
2981 dts_demuxer_select="dca_parser"
2982 dtshd_demuxer_select="dca_parser"
2983 dv_demuxer_select="dvprofile"
2984 dv_muxer_select="dvprofile"
2985 dxa_demuxer_select="riffdec"
2986 eac3_demuxer_select="ac3_parser"
2987 f4v_muxer_select="mov_muxer"
2988 fifo_muxer_deps="threads"
2989 flac_demuxer_select="flac_parser"
2990 hds_muxer_select="flv_muxer"
2991 hls_muxer_select="mpegts_muxer"
2992 image2_alias_pix_demuxer_select="image2_demuxer"
2993 image2_brender_pix_demuxer_select="image2_demuxer"
2994 ipod_muxer_select="mov_muxer"
2995 ismv_muxer_select="mov_muxer"
2996 matroska_audio_muxer_select="matroska_muxer"
2997 matroska_demuxer_select="iso_media riffdec"
2998 matroska_demuxer_suggest="bzlib lzo zlib"
2999 matroska_muxer_select="iso_media riffenc"
3000 mmf_muxer_select="riffenc"
3001 mov_demuxer_select="iso_media riffdec"
3002 mov_demuxer_suggest="zlib"
3003 mov_muxer_select="iso_media riffenc rtpenc_chain"
3004 mp3_demuxer_select="mpegaudio_parser"
3005 mp3_muxer_select="mpegaudioheader"
3006 mp4_muxer_select="mov_muxer"
3007 mpegts_demuxer_select="iso_media"
3008 mpegts_muxer_select="adts_muxer latm_muxer"
3009 mpegtsraw_demuxer_select="mpegts_demuxer"
3010 mxf_d10_muxer_select="mxf_muxer"
3011 mxf_opatom_muxer_select="mxf_muxer"
3012 nut_muxer_select="riffenc"
3013 nuv_demuxer_select="riffdec"
3014 oga_muxer_select="ogg_muxer"
3015 ogg_demuxer_select="dirac_parse"
3016 ogv_muxer_select="ogg_muxer"
3017 opus_muxer_select="ogg_muxer"
3018 psp_muxer_select="mov_muxer"
3019 rtp_demuxer_select="sdp_demuxer"
3020 rtp_muxer_select="golomb"
3021 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
3022 rtsp_demuxer_select="http_protocol rtpdec"
3023 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
3024 sap_demuxer_select="sdp_demuxer"
3025 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
3026 sdp_demuxer_select="rtpdec"
3027 smoothstreaming_muxer_select="ismv_muxer"
3028 spdif_muxer_select="aac_parser"
3029 spx_muxer_select="ogg_muxer"
3030 swf_demuxer_suggest="zlib"
3031 tak_demuxer_select="tak_parser"
3032 tg2_muxer_select="mov_muxer"
3033 tgp_muxer_select="mov_muxer"
3034 vobsub_demuxer_select="mpegps_demuxer"
3035 w64_demuxer_select="wav_demuxer"
3036 w64_muxer_select="wav_muxer"
3037 wav_demuxer_select="riffdec"
3038 wav_muxer_select="riffenc"
3039 webm_muxer_select="iso_media riffenc"
3040 webm_dash_manifest_demuxer_select="matroska_demuxer"
3041 wtv_demuxer_select="mpegts_demuxer riffdec"
3042 wtv_muxer_select="mpegts_muxer riffenc"
3043 xmv_demuxer_select="riffdec"
3044 xwma_demuxer_select="riffdec"
3045
3046 # indevs / outdevs
3047 alsa_indev_deps="alsa"
3048 alsa_outdev_deps="alsa"
3049 avfoundation_indev_deps="avfoundation pthreads"
3050 avfoundation_indev_extralibs="-framework Foundation -framework CoreVideo -framework CoreMedia"
3051 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
3052 caca_outdev_deps="libcaca"
3053 decklink_indev_deps="decklink threads"
3054 decklink_indev_extralibs="-lstdc++"
3055 decklink_outdev_deps="decklink threads"
3056 decklink_outdev_extralibs="-lstdc++"
3057 libndi_newtek_indev_deps="libndi_newtek"
3058 libndi_newtek_indev_extralibs="-lndi"
3059 libndi_newtek_outdev_deps="libndi_newtek"
3060 libndi_newtek_outdev_extralibs="-lndi"
3061 dshow_indev_deps="IBaseFilter"
3062 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
3063 dv1394_indev_deps="dv1394"
3064 dv1394_indev_select="dv_demuxer"
3065 fbdev_indev_deps="linux_fb_h"
3066 fbdev_outdev_deps="linux_fb_h"
3067 gdigrab_indev_deps="CreateDIBSection"
3068 gdigrab_indev_extralibs="-lgdi32"
3069 gdigrab_indev_select="bmp_decoder"
3070 iec61883_indev_deps="libiec61883"
3071 jack_indev_deps="jack"
3072 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
3073 kmsgrab_indev_deps="libdrm"
3074 lavfi_indev_deps="avfilter"
3075 libcdio_indev_deps="libcdio"
3076 libdc1394_indev_deps="libdc1394"
3077 libv4l2_indev_deps="libv4l2"
3078 openal_indev_deps="openal"
3079 opengl_outdev_deps="opengl"
3080 oss_indev_deps_any="soundcard_h sys_soundcard_h"
3081 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
3082 pulse_indev_deps="libpulse"
3083 pulse_outdev_deps="libpulse"
3084 sdl2_outdev_deps="sdl2"
3085 sndio_indev_deps="sndio"
3086 sndio_outdev_deps="sndio"
3087 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
3088 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
3089 vfwcap_indev_deps="vfw32 vfwcap_defines"
3090 xcbgrab_indev_deps="libxcb"
3091 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
3092 xv_outdev_extralibs="-lXv -lX11 -lXext"
3093
3094 # protocols
3095 async_protocol_deps="threads"
3096 bluray_protocol_deps="libbluray"
3097 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
3098 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
3099 ffrtmpcrypt_protocol_select="tcp_protocol"
3100 ffrtmphttp_protocol_deps="!librtmp_protocol"
3101 ffrtmphttp_protocol_select="http_protocol"
3102 ftp_protocol_select="tcp_protocol"
3103 gopher_protocol_select="network"
3104 http_protocol_select="tcp_protocol"
3105 httpproxy_protocol_select="tcp_protocol"
3106 https_protocol_select="tls_protocol"
3107 icecast_protocol_select="http_protocol"
3108 librtmp_protocol_deps="librtmp"
3109 librtmpe_protocol_deps="librtmp"
3110 librtmps_protocol_deps="librtmp"
3111 librtmpt_protocol_deps="librtmp"
3112 librtmpte_protocol_deps="librtmp"
3113 libsmbclient_protocol_deps="libsmbclient gplv3"
3114 libssh_protocol_deps="libssh"
3115 mmsh_protocol_select="http_protocol"
3116 mmst_protocol_select="network"
3117 rtmp_protocol_deps="!librtmp_protocol"
3118 rtmp_protocol_select="tcp_protocol"
3119 rtmpe_protocol_select="ffrtmpcrypt_protocol"
3120 rtmps_protocol_deps="!librtmp_protocol"
3121 rtmps_protocol_select="tls_protocol"
3122 rtmpt_protocol_select="ffrtmphttp_protocol"
3123 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
3124 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
3125 rtp_protocol_select="udp_protocol"
3126 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
3127 sctp_protocol_select="network"
3128 srtp_protocol_select="rtp_protocol srtp"
3129 tcp_protocol_select="network"
3130 tls_gnutls_protocol_deps="gnutls !tls_schannel_protocol !tls_securetransport_protocol"
3131 tls_gnutls_protocol_select="tcp_protocol"
3132 tls_openssl_protocol_deps="openssl !tls_schannel_protocol !tls_securetransport_protocol !tls_gnutls_protocol"
3133 tls_openssl_protocol_select="tcp_protocol"
3134 tls_schannel_protocol_deps="schannel"
3135 tls_schannel_protocol_select="tcp_protocol"
3136 tls_securetransport_protocol_deps="securetransport"
3137 tls_securetransport_protocol_select="tcp_protocol"
3138 tls_protocol_deps_any="tls_schannel_protocol tls_securetransport_protocol tls_gnutls_protocol tls_openssl_protocol"
3139 udp_protocol_select="network"
3140 udplite_protocol_select="network"
3141 unix_protocol_deps="sys_un_h"
3142 unix_protocol_select="network"
3143
3144 # filters
3145 afftfilt_filter_deps="avcodec"
3146 afftfilt_filter_select="fft"
3147 afir_filter_deps="avcodec"
3148 afir_filter_select="fft"
3149 amovie_filter_deps="avcodec avformat"
3150 aresample_filter_deps="swresample"
3151 ass_filter_deps="libass"
3152 atempo_filter_deps="avcodec"
3153 atempo_filter_select="rdft"
3154 azmq_filter_deps="libzmq"
3155 blackframe_filter_deps="gpl"
3156 boxblur_filter_deps="gpl"
3157 bs2b_filter_deps="libbs2b"
3158 colormatrix_filter_deps="gpl"
3159 coreimage_filter_deps="coreimage appkit"
3160 coreimage_filter_extralibs="-framework OpenGL"
3161 coreimagesrc_filter_deps="coreimage appkit"
3162 coreimagesrc_filter_extralibs="-framework OpenGL"
3163 cover_rect_filter_deps="avcodec avformat gpl"
3164 cropdetect_filter_deps="gpl"
3165 deinterlace_qsv_filter_deps="libmfx"
3166 deinterlace_vaapi_filter_deps="vaapi"
3167 delogo_filter_deps="gpl"
3168 deshake_filter_select="pixelutils"
3169 drawtext_filter_deps="libfreetype"
3170 elbg_filter_deps="avcodec"
3171 eq_filter_deps="gpl"
3172 fftfilt_filter_deps="avcodec"
3173 fftfilt_filter_select="rdft"
3174 find_rect_filter_deps="avcodec avformat gpl"
3175 firequalizer_filter_deps="avcodec"
3176 firequalizer_filter_select="rdft"
3177 flite_filter_deps="libflite"
3178 framerate_filter_select="pixelutils"
3179 frei0r_filter_deps="frei0r dlopen"
3180 frei0r_src_filter_deps="frei0r dlopen"
3181 fspp_filter_deps="gpl"
3182 geq_filter_deps="gpl"
3183 histeq_filter_deps="gpl"
3184 hqdn3d_filter_deps="gpl"
3185 interlace_filter_deps="gpl"
3186 kerndeint_filter_deps="gpl"
3187 ladspa_filter_deps="ladspa dlopen"
3188 mcdeint_filter_deps="avcodec gpl"
3189 movie_filter_deps="avcodec avformat"
3190 mpdecimate_filter_deps="gpl"
3191 mpdecimate_filter_select="pixelutils"
3192 mptestsrc_filter_deps="gpl"
3193 negate_filter_deps="lut_filter"
3194 nnedi_filter_deps="gpl"
3195 ocr_filter_deps="libtesseract"
3196 ocv_filter_deps="libopencv"
3197 owdenoise_filter_deps="gpl"
3198 pan_filter_deps="swresample"
3199 perspective_filter_deps="gpl"
3200 phase_filter_deps="gpl"
3201 pp7_filter_deps="gpl"
3202 pp_filter_deps="gpl postproc"
3203 pullup_filter_deps="gpl"
3204 removelogo_filter_deps="avcodec avformat swscale"
3205 repeatfields_filter_deps="gpl"
3206 resample_filter_deps="avresample"
3207 rubberband_filter_deps="librubberband"
3208 sab_filter_deps="gpl swscale"
3209 scale2ref_filter_deps="swscale"
3210 scale_filter_deps="swscale"
3211 scale_qsv_filter_deps="libmfx"
3212 select_filter_select="pixelutils"
3213 showcqt_filter_deps="avcodec avformat swscale"
3214 showcqt_filter_select="fft"
3215 showfreqs_filter_deps="avcodec"
3216 showfreqs_filter_select="fft"
3217 showspectrum_filter_deps="avcodec"
3218 showspectrum_filter_select="fft"
3219 showspectrumpic_filter_deps="avcodec"
3220 showspectrumpic_filter_select="fft"
3221 signature_filter_deps="gpl avcodec avformat"
3222 smartblur_filter_deps="gpl swscale"
3223 sofalizer_filter_deps="libmysofa avcodec"
3224 sofalizer_filter_select="fft"
3225 spectrumsynth_filter_deps="avcodec"
3226 spectrumsynth_filter_select="fft"
3227 spp_filter_deps="gpl avcodec"
3228 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3229 stereo3d_filter_deps="gpl"
3230 subtitles_filter_deps="avformat avcodec libass"
3231 super2xsai_filter_deps="gpl"
3232 pixfmts_super2xsai_test_deps="super2xsai_filter"
3233 tinterlace_filter_deps="gpl"
3234 tinterlace_merge_test_deps="tinterlace_filter"
3235 tinterlace_pad_test_deps="tinterlace_filter"
3236 tonemap_filter_deps="const_nan"
3237 uspp_filter_deps="gpl avcodec"
3238 vaguedenoiser_filter_deps="gpl"
3239 vidstabdetect_filter_deps="libvidstab"
3240 vidstabtransform_filter_deps="libvidstab"
3241 libvmaf_filter_deps="libvmaf"
3242 zmq_filter_deps="libzmq"
3243 zoompan_filter_deps="swscale"
3244 zscale_filter_deps="libzimg const_nan"
3245 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3246
3247 # examples
3248 avio_dir_cmd_deps="avformat avutil"
3249 avio_reading_deps="avformat avcodec avutil"
3250 decode_audio_example_deps="avcodec avutil"
3251 decode_video_example_deps="avcodec avutil"
3252 demuxing_decoding_example_deps="avcodec avformat avutil"
3253 encode_audio_example_deps="avcodec avutil"
3254 encode_video_example_deps="avcodec avutil"
3255 extract_mvs_example_deps="avcodec avformat avutil"
3256 filter_audio_example_deps="avfilter avutil"
3257 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3258 filtering_video_example_deps="avfilter avcodec avformat avutil"
3259 http_multiclient_example_deps="avformat avutil fork"
3260 hw_decode_example_deps="avcodec avformat avutil"
3261 metadata_example_deps="avformat avutil"
3262 muxing_example_deps="avcodec avformat avutil swscale"
3263 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
3264 remuxing_example_deps="avcodec avformat avutil"
3265 resampling_audio_example_deps="avutil swresample"
3266 scaling_video_example_deps="avutil swscale"
3267 transcode_aac_example_deps="avcodec avformat swresample"
3268 transcoding_example_deps="avfilter avcodec avformat avutil"
3269
3270 # libraries, in linking order
3271 avcodec_deps="avutil"
3272 avcodec_select="null_bsf"
3273 avdevice_deps="avformat avcodec avutil"
3274 avfilter_deps="avutil"
3275 avformat_deps="avcodec avutil"
3276 avresample_deps="avutil"
3277 postproc_deps="avutil gpl"
3278 swresample_deps="avutil"
3279 swscale_deps="avutil"
3280
3281 # programs
3282 ffmpeg_deps="avcodec avfilter avformat swresample"
3283 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3284                null_filter
3285                trim_filter"
3286 ffplay_deps="avcodec avformat swscale swresample sdl2"
3287 ffplay_extralibs='$sdl2_extralibs'
3288 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3289 ffprobe_deps="avcodec avformat"
3290 ffserver_deps="avformat fork sarestart"
3291 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
3292
3293 # documentation
3294 podpages_deps="perl"
3295 manpages_deps="perl pod2man"
3296 htmlpages_deps="perl"
3297 htmlpages_deps_any="makeinfo_html texi2html"
3298 txtpages_deps="perl makeinfo"
3299 doc_deps_any="manpages htmlpages podpages txtpages"
3300
3301 # default parameters
3302
3303 logfile="ffbuild/config.log"
3304
3305 # installation paths
3306 prefix_default="/usr/local"
3307 bindir_default='${prefix}/bin'
3308 datadir_default='${prefix}/share/ffmpeg'
3309 docdir_default='${prefix}/share/doc/ffmpeg'
3310 incdir_default='${prefix}/include'
3311 libdir_default='${prefix}/lib'
3312 mandir_default='${prefix}/share/man'
3313
3314 # toolchain
3315 ar_default="ar"
3316 cc_default="gcc"
3317 cxx_default="g++"
3318 host_cc_default="gcc"
3319 doxygen_default="doxygen"
3320 install="install"
3321 ln_s_default="ln -s -f"
3322 nm_default="nm -g"
3323 pkg_config_default=pkg-config
3324 ranlib_default="ranlib"
3325 strip_default="strip"
3326 version_script='--version-script'
3327 x86asmexe_default="nasm"
3328 windres_default="windres"
3329 nvcc_default="nvcc"
3330 nvccflags_default="-gencode arch=compute_30,code=sm_30 -O2"
3331
3332 # OS
3333 target_os_default=$(tolower $(uname -s))
3334 host_os=$target_os_default
3335
3336 # machine
3337 if test "$target_os_default" = aix; then
3338     arch_default=$(uname -p)
3339     strip_default="strip -X32_64"
3340 else
3341     arch_default=$(uname -m)
3342 fi
3343 cpu="generic"
3344 intrinsics="none"
3345
3346 # configurable options
3347 enable $PROGRAM_LIST
3348 enable $DOCUMENT_LIST
3349 enable $EXAMPLE_LIST
3350 enable $(filter_out avresample $LIBRARY_LIST)
3351 enable stripping
3352
3353 enable asm
3354 enable debug
3355 enable doc
3356 enable faan faandct faanidct
3357 enable optimizations
3358 enable runtime_cpudetect
3359 enable safe_bitstream_reader
3360 enable static
3361 enable swscale_alpha
3362 enable valgrind_backtrace
3363
3364 sws_max_filter_size_default=256
3365 set_default sws_max_filter_size
3366
3367 # build settings
3368 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3369 LIBPREF="lib"
3370 LIBSUF=".a"
3371 FULLNAME='$(NAME)$(BUILDSUF)'
3372 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3373 SLIBPREF="lib"
3374 SLIBSUF=".so"
3375 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3376 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3377 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3378 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3379 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3380 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3381 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
3382
3383 asflags_filter=echo
3384 cflags_filter=echo
3385 ldflags_filter=echo
3386
3387 AS_C='-c'
3388 AS_O='-o $@'
3389 CC_C='-c'
3390 CC_E='-E -o $@'
3391 CC_O='-o $@'
3392 CXX_C='-c'
3393 CXX_O='-o $@'
3394 OBJCC_C='-c'
3395 OBJCC_E='-E -o $@'
3396 OBJCC_O='-o $@'
3397 X86ASM_O='-o $@'
3398 LD_O='-o $@'
3399 LD_LIB='-l%'
3400 LD_PATH='-L'
3401 HOSTCC_C='-c'
3402 HOSTCC_E='-E -o $@'
3403 HOSTCC_O='-o $@'
3404 HOSTLD_O='-o $@'
3405 NVCC_C='-c'
3406 NVCC_O='-o $@'
3407
3408 host_extralibs='-lm'
3409 host_cflags_filter=echo
3410 host_ldflags_filter=echo
3411
3412 target_path='$(CURDIR)'
3413
3414 # since the object filename is not given with the -MM flag, the compiler
3415 # is only able to print the basename, and we must add the path ourselves
3416 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3417 DEPFLAGS='-MM'
3418
3419 mkdir -p ffbuild
3420
3421 # find source path
3422 if test -f configure; then
3423     source_path=.
3424 else
3425     source_path=$(cd $(dirname "$0"); pwd)
3426     case "$source_path" in
3427         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3428     esac
3429     test -e "$source_path/config.h" &&
3430         die "Out of tree builds are impossible with config.h in source dir."
3431 fi
3432
3433 for v in "$@"; do
3434     r=${v#*=}
3435     l=${v%"$r"}
3436     r=$(sh_quote "$r")
3437     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3438 done
3439
3440 find_things(){
3441     thing=$1
3442     pattern=$2
3443     file=$source_path/$3
3444     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
3445 }
3446
3447 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
3448 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
3449 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
3450 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
3451 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
3452 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
3453 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
3454 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
3455 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
3456
3457 find_things_extern(){
3458     thing=$1
3459     pattern=$2
3460     file=$source_path/$3
3461     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
3462 }
3463
3464 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3465 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3466
3467 ALL_COMPONENTS="
3468     $BSF_LIST
3469     $DECODER_LIST
3470     $DEMUXER_LIST
3471     $ENCODER_LIST
3472     $FILTER_LIST
3473     $HWACCEL_LIST
3474     $INDEV_LIST
3475     $MUXER_LIST
3476     $OUTDEV_LIST
3477     $PARSER_LIST
3478     $PROTOCOL_LIST
3479 "
3480
3481 for n in $COMPONENT_LIST; do
3482     v=$(toupper ${n%s})_LIST
3483     eval enable \$$v
3484     eval ${n}_if_any="\$$v"
3485 done
3486
3487 enable $ARCH_EXT_LIST
3488
3489 die_unknown(){
3490     echo "Unknown option \"$1\"."
3491     echo "See $0 --help for available options."
3492     exit 1
3493 }
3494
3495 print_in_columns() {
3496     cols=$(expr $ncols / 24)
3497     cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
3498 }
3499
3500 show_list() {
3501     suffix=_$1
3502     shift
3503     echo $* | sed s/$suffix//g | print_in_columns
3504     exit 0
3505 }
3506
3507 rand_list(){
3508     IFS=', '
3509     set -- $*
3510     unset IFS
3511     for thing; do
3512         comp=${thing%:*}
3513         prob=${thing#$comp}
3514         prob=${prob#:}
3515         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3516         echo "prob ${prob:-0.5}"
3517         printf '%s\n' $comp
3518     done
3519 }
3520
3521 do_random(){
3522     action=$1
3523     shift
3524     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3525     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3526 }
3527
3528 for opt do
3529     optval="${opt#*=}"
3530     case "$opt" in
3531         --extra-ldflags=*)
3532             add_ldflags $optval
3533         ;;
3534         --extra-ldexeflags=*)
3535             add_ldexeflags $optval
3536         ;;
3537         --extra-ldlibflags=*)
3538             add_ldlibflags $optval
3539         ;;
3540         --extra-libs=*)
3541             add_extralibs $optval
3542         ;;
3543         --disable-devices)
3544             disable $INDEV_LIST $OUTDEV_LIST
3545         ;;
3546         --enable-debug=*)
3547             debuglevel="$optval"
3548         ;;
3549         --disable-programs)
3550             disable $PROGRAM_LIST
3551         ;;
3552         --disable-everything)
3553             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3554         ;;
3555         --disable-all)
3556             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3557             disable $LIBRARY_LIST $PROGRAM_LIST doc
3558             enable avutil
3559         ;;
3560         --enable-random|--disable-random)
3561             action=${opt%%-random}
3562             do_random ${action#--} $COMPONENT_LIST
3563         ;;
3564         --enable-random=*|--disable-random=*)
3565             action=${opt%%-random=*}
3566             do_random ${action#--} $optval
3567         ;;
3568         --enable-sdl)
3569             enable sdl2
3570         ;;
3571         --enable-*=*|--disable-*=*)
3572             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3573             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3574             eval list=\$$(toupper $thing)_LIST
3575             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3576             list=$(filter "$name" $list)
3577             [ "$list" = "" ] && warn "Option $opt did not match anything"
3578             $action $list
3579         ;;
3580         --enable-yasm|--disable-yasm)
3581             warn "The ${opt} option is only provided for compatibility and will be\n"\
3582                  "removed in the future. Use --enable-x86asm / --disable-x86asm instead."
3583             test $opt = --enable-yasm && x86asm=yes || x86asm=no
3584         ;;
3585         --yasmexe=*)
3586             warn "The --yasmexe option is only provided for compatibility and will be\n"\
3587                  "removed in the future. Use --x86asmexe instead."
3588             x86asmexe="$optval"
3589         ;;
3590         --enable-?*|--disable-?*)
3591             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3592             if is_in $option $COMPONENT_LIST; then
3593                 test $action = disable && action=unset
3594                 eval $action \$$(toupper ${option%s})_LIST
3595             elif is_in $option $CMDLINE_SELECT; then
3596                 $action $option
3597             else
3598                 die_unknown $opt
3599             fi
3600         ;;
3601         --list-*)
3602             NAME="${opt#--list-}"
3603             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3604             NAME=${NAME%s}
3605             eval show_list $NAME \$$(toupper $NAME)_LIST
3606         ;;
3607         --help|-h) show_help
3608         ;;
3609         --quiet|-q) quiet=yes
3610         ;;
3611         --fatal-warnings) enable fatal_warnings
3612         ;;
3613         --libfuzzer=*)
3614             libfuzzer_path="$optval"
3615         ;;
3616         *)
3617             optname="${opt%%=*}"
3618             optname="${optname#--}"
3619             optname=$(echo "$optname" | sed 's/-/_/g')
3620             if is_in $optname $CMDLINE_SET; then
3621                 eval $optname='$optval'
3622             elif is_in $optname $CMDLINE_APPEND; then
3623                 append $optname "$optval"
3624             else
3625                 die_unknown $opt
3626             fi
3627         ;;
3628     esac
3629 done
3630
3631 for e in $env; do
3632     eval "export $e"
3633 done
3634
3635 if disabled autodetect; then
3636
3637     # Unless iconv is explicitely disabled by the user, we still want to probe
3638     # for the iconv from the libc.
3639     disabled iconv || enable libc_iconv
3640
3641     disable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3642     disable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3643 fi
3644 # Mark specifically enabled, but normally autodetected libraries as requested.
3645 for lib in $AUTODETECT_LIBS; do
3646     enabled $lib && request $lib
3647 done
3648 #TODO: switch to $AUTODETECT_LIBS when $THREADS_LIST is supported the same way
3649 enable_weak $EXTERNAL_AUTODETECT_LIBRARY_LIST
3650 enable_weak $HWACCEL_AUTODETECT_LIBRARY_LIST
3651
3652 disabled logging && logfile=/dev/null
3653
3654 die_license_disabled() {
3655     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
3656 }
3657
3658 die_license_disabled_gpl() {
3659     enabled $1 || { enabled $v && die "$v is incompatible with the gpl and --enable-$1 is not specified."; }
3660 }
3661
3662 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3663 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3664
3665 enabled gpl && map "die_license_disabled_gpl nonfree" $EXTERNAL_LIBRARY_NONFREE_LIST
3666 map "die_license_disabled nonfree" $HWACCEL_LIBRARY_NONFREE_LIST
3667
3668 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3669
3670 # Disable all the library-specific components if the library itself
3671 # is disabled, see AVCODEC_LIST and following _LIST variables.
3672
3673 disable_components(){
3674     disabled ${1} && disable $(
3675         eval components="\$$(toupper ${1})_COMPONENTS"
3676         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
3677     )
3678 }
3679
3680 map 'disable_components $v' $LIBRARY_LIST
3681
3682 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
3683 set >> $logfile
3684
3685 test -n "$valgrind" && toolchain="valgrind-memcheck"
3686
3687 enabled ossfuzz && {
3688     add_cflags  -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp -fno-omit-frame-pointer
3689     add_ldflags -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp
3690 }
3691
3692 case "$toolchain" in
3693     *-asan)
3694         cc_default="${toolchain%-asan}"
3695         add_cflags  -fsanitize=address
3696         add_ldflags -fsanitize=address
3697     ;;
3698     *-msan)
3699         cc_default="${toolchain%-msan}"
3700         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
3701         add_ldflags -fsanitize=memory
3702     ;;
3703     *-tsan)
3704         cc_default="${toolchain%-tsan}"
3705         add_cflags  -fsanitize=thread -fPIE
3706         add_ldflags -fsanitize=thread -pie
3707         case "$toolchain" in
3708             gcc-tsan)
3709                 add_cflags  -fPIC
3710                 add_ldflags -fPIC
3711                 ;;
3712         esac
3713     ;;
3714     *-usan)
3715         cc_default="${toolchain%-usan}"
3716         add_cflags  -fsanitize=undefined
3717         add_ldflags -fsanitize=undefined
3718     ;;
3719     valgrind-*)
3720         target_exec_default="valgrind"
3721         case "$toolchain" in
3722             valgrind-massif)
3723                 target_exec_args="--tool=massif --alloc-fn=av_malloc --alloc-fn=av_mallocz --alloc-fn=av_calloc --alloc-fn=av_fast_padded_malloc --alloc-fn=av_fast_malloc --alloc-fn=av_realloc_f --alloc-fn=av_fast_realloc --alloc-fn=av_realloc"
3724                 ;;
3725             valgrind-memcheck)
3726                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3727                 ;;
3728         esac
3729     ;;
3730     msvc)
3731         # Check whether the current MSVC version needs the C99 converter.
3732         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3733         # support enough of C99 to build ffmpeg. Default to the new
3734         # behaviour if the regexp was unable to match anything, since this
3735         # successfully parses the version number of existing supported
3736         # versions that require the converter (MSVC 2010 and 2012).
3737         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3738         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3739             cc_default="cl"
3740             cxx_default="cl"
3741         else
3742             cc_default="c99wrap cl"
3743             cxx_default="c99wrap cl"
3744         fi
3745         ld_default="$source_path/compat/windows/mslink"
3746         nm_default="dumpbin -symbols"
3747         ar_default="lib"
3748         case "$arch" in
3749         arm*)
3750             as_default="armasm"
3751             ;;
3752         esac
3753         target_os_default="win32"
3754         # Use a relative path for TMPDIR. This makes sure all the
3755         # ffconf temp files are written with a relative path, avoiding
3756         # issues with msys/win32 path conversion for MSVC parameters
3757         # such as -Fo<file> or -out:<file>.
3758         TMPDIR=.
3759     ;;
3760     icl)
3761         cc_default="icl"
3762         ld_default="xilink"
3763         nm_default="dumpbin -symbols"
3764         ar_default="xilib"
3765         target_os_default="win32"
3766         TMPDIR=.
3767     ;;
3768     gcov)
3769         add_cflags  -fprofile-arcs -ftest-coverage
3770         add_ldflags -fprofile-arcs -ftest-coverage
3771     ;;
3772     llvm-cov)
3773         add_cflags -fprofile-arcs -ftest-coverage
3774         add_ldflags --coverage
3775     ;;
3776     hardened)
3777         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3778         add_cflags   -fno-strict-overflow -fstack-protector-all
3779         add_ldflags  -Wl,-z,relro -Wl,-z,now
3780         add_cflags   -fPIE
3781         add_ldexeflags -fPIE -pie
3782     ;;
3783     ?*)
3784         die "Unknown toolchain $toolchain"
3785     ;;
3786 esac
3787
3788 test -n "$cross_prefix" && enable cross_compile
3789
3790 if enabled cross_compile; then
3791     test -n "$arch" && test -n "$target_os" ||
3792         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
3793 fi
3794
3795 ar_default="${cross_prefix}${ar_default}"
3796 cc_default="${cross_prefix}${cc_default}"
3797 cxx_default="${cross_prefix}${cxx_default}"
3798 nm_default="${cross_prefix}${nm_default}"
3799 pkg_config_default="${cross_prefix}${pkg_config_default}"
3800 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
3801     ranlib_default="${cross_prefix}${ranlib_default} -D"
3802 else
3803     ranlib_default="${cross_prefix}${ranlib_default}"
3804 fi
3805 strip_default="${cross_prefix}${strip_default}"
3806 windres_default="${cross_prefix}${windres_default}"
3807
3808 sysinclude_default="${sysroot}/usr/include"
3809
3810 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3811     target_exec target_os x86asmexe nvcc
3812 enabled cross_compile || host_cc_default=$cc
3813 set_default host_cc
3814
3815 pkg_config_fail_message=""
3816 if ! $pkg_config --version >/dev/null 2>&1; then
3817     warn "$pkg_config not found, library detection may fail."
3818     pkg_config=false
3819 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
3820     pkg_config_fail_message="
3821 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
3822 fi
3823
3824 if test $doxygen != $doxygen_default && \
3825   ! $doxygen --version >/dev/null 2>&1; then
3826     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3827 fi
3828
3829 exesuf() {
3830     case $1 in
3831         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3832     esac
3833 }
3834
3835 EXESUF=$(exesuf $target_os)
3836 HOSTEXESUF=$(exesuf $host_os)
3837
3838 # set temporary file name
3839 : ${TMPDIR:=$TEMPDIR}
3840 : ${TMPDIR:=$TMP}
3841 : ${TMPDIR:=/tmp}
3842
3843 if [ -n "$tempprefix" ] ; then
3844     mktemp(){
3845         tmpname="$tempprefix.${HOSTNAME}.${UID}"
3846         echo "$tmpname"
3847         mkdir "$tmpname"
3848     }
3849 elif ! check_cmd mktemp -u XXXXXX; then
3850     # simple replacement for missing mktemp
3851     # NOT SAFE FOR GENERAL USE
3852     mktemp(){
3853         tmpname="${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3854         echo "$tmpname"
3855         mkdir "$tmpname"
3856     }
3857 fi
3858
3859 FFTMPDIR=$(mktemp -d "${TMPDIR}/ffconf.XXXXXXXX" 2> /dev/null) ||
3860     die "Unable to create temporary directory in $TMPDIR."
3861
3862 tmpfile(){
3863     tmp="${FFTMPDIR}/test"$2
3864     (set -C; exec > $tmp) 2> /dev/null ||
3865         die "Unable to create temporary file in $FFTMPDIR."
3866     eval $1=$tmp
3867 }
3868
3869 trap 'rm -rf -- "$FFTMPDIR"' EXIT
3870 trap 'exit 2' INT
3871
3872 tmpfile TMPASM .asm
3873 tmpfile TMPC   .c
3874 tmpfile TMPCPP .cpp
3875 tmpfile TMPE   $EXESUF
3876 tmpfile TMPH   .h
3877 tmpfile TMPM   .m
3878 tmpfile TMPO   .o
3879 tmpfile TMPS   .S
3880 tmpfile TMPSH  .sh
3881 tmpfile TMPV   .ver
3882
3883 unset -f mktemp
3884
3885 chmod +x $TMPE
3886
3887 # make sure we can execute files in $TMPDIR
3888 cat > $TMPSH 2>> $logfile <<EOF
3889 #! /bin/sh
3890 EOF
3891 chmod +x $TMPSH >> $logfile 2>&1
3892 if ! $TMPSH >> $logfile 2>&1; then
3893     cat <<EOF
3894 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3895 variable to another directory and make sure that it is not mounted noexec.
3896 EOF
3897     die "Sanity test failed."
3898 fi
3899
3900 armasm_flags(){
3901     for flag; do
3902         case $flag in
3903             # Filter out MSVC cl.exe options from cflags that shouldn't
3904             # be passed to gas-preprocessor
3905             -M[TD]*)                                            ;;
3906             *)                  echo $flag                      ;;
3907         esac
3908    done
3909 }
3910
3911 ccc_flags(){
3912     for flag; do
3913         case $flag in
3914             -std=c99)           echo -c99                       ;;
3915             -mcpu=*)            echo -arch ${flag#*=}           ;;
3916             -mieee)             echo -ieee                      ;;
3917             -O*|-fast)          echo $flag                      ;;
3918             -fno-math-errno)    echo -assume nomath_errno       ;;
3919             -g)                 echo -g3                        ;;
3920             -Wall)              echo -msg_enable level2         ;;
3921             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
3922             -Wl,*)              echo $flag                      ;;
3923             -f*|-W*)                                            ;;
3924             *)                  echo $flag                      ;;
3925         esac
3926    done
3927 }
3928
3929 cparser_flags(){
3930     for flag; do
3931         case $flag in
3932             -Wno-switch)             echo -Wno-switch-enum ;;
3933             -Wno-format-zero-length) ;;
3934             -Wdisabled-optimization) ;;
3935             -Wno-pointer-sign)       echo -Wno-other ;;
3936             *)                       echo $flag ;;
3937         esac
3938     done
3939 }
3940
3941 msvc_common_flags(){
3942     for flag; do
3943         case $flag in
3944             # In addition to specifying certain flags under the compiler
3945             # specific filters, they must be specified here as well or else the
3946             # generic catch all at the bottom will print the original flag.
3947             -Wall)                ;;
3948             -Wextra)              ;;
3949             -std=c99)             ;;
3950             # Common flags
3951             -fomit-frame-pointer) ;;
3952             -g)                   echo -Z7 ;;
3953             -fno-math-errno)      ;;
3954             -fno-common)          ;;
3955             -fno-signed-zeros)    ;;
3956             -fPIC)                ;;
3957             -mthumb)              ;;
3958             -march=*)             ;;
3959             -lz)                  echo zlib.lib ;;
3960             -lx264)               echo libx264.lib ;;
3961             -lstdc++)             ;;
3962             -l*)                  echo ${flag#-l}.lib ;;
3963             -LARGEADDRESSAWARE)   echo $flag ;;
3964             -L*)                  echo -libpath:${flag#-L} ;;
3965             *)                    echo $flag ;;
3966         esac
3967     done
3968 }
3969
3970 msvc_flags(){
3971     msvc_common_flags "$@"
3972     for flag; do
3973         case $flag in
3974             -Wall)                echo -W3 -wd4018 -wd4146 -wd4244 -wd4305     \
3975                                        -wd4554 ;;
3976             -Wextra)              echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3977                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3978                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3979                                        -wd4307 \
3980                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
3981         esac
3982     done
3983 }
3984
3985 icl_flags(){
3986     msvc_common_flags "$@"
3987     for flag; do
3988         case $flag in
3989             # Despite what Intel's documentation says -Wall, which is supported
3990             # on Windows, does enable remarks so disable them here.
3991             -Wall)                echo $flag -Qdiag-disable:remark ;;
3992             -std=c99)             echo -Qstd=c99 ;;
3993             -flto)                echo -ipo ;;
3994         esac
3995     done
3996 }
3997
3998 icc_flags(){
3999     for flag; do
4000         case $flag in
4001             -flto)                echo -ipo ;;
4002             *)                    echo $flag ;;
4003         esac
4004     done
4005 }
4006
4007 pgi_flags(){
4008     for flag; do
4009         case $flag in
4010             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
4011             -fomit-frame-pointer) echo -Mnoframe ;;
4012             -g)                   echo -gopt ;;
4013             *)                    echo $flag ;;
4014         esac
4015     done
4016 }
4017
4018 suncc_flags(){
4019     for flag; do
4020         case $flag in
4021             -march=*|-mcpu=*)
4022                 case "${flag#*=}" in
4023                     native)                   echo -xtarget=native       ;;
4024                     v9|niagara)               echo -xarch=sparc          ;;
4025                     ultrasparc)               echo -xarch=sparcvis       ;;
4026                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
4027                     i586|pentium)             echo -xchip=pentium        ;;
4028                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
4029                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
4030                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
4031                     pentium4*)          echo -xtarget=pentium4           ;;
4032                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
4033                     *-sse3)             echo -xarch=sse3                 ;;
4034                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
4035                     bonnell)                   echo -xarch=ssse3         ;;
4036                     corei7|nehalem)            echo -xtarget=nehalem     ;;
4037                     westmere)                  echo -xtarget=westmere    ;;
4038                     silvermont)                echo -xarch=sse4_2        ;;
4039                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
4040                     core-avx*|ivybridge|haswell|broadwell|skylake*|knl)
4041                                                echo -xarch=avx           ;;
4042                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
4043                     btver1)                    echo -xarch=amdsse4a      ;;
4044                     btver2|bdver*|znver*)      echo -xarch=avx           ;;
4045                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
4046                     k8|opteron|athlon64|athlon-fx)
4047                                                echo -xarch=sse2a         ;;
4048                     athlon*)                   echo -xarch=pentium_proa  ;;
4049                 esac
4050                 ;;
4051             -std=c99)             echo -xc99              ;;
4052             -fomit-frame-pointer) echo -xregs=frameptr    ;;
4053             -fPIC)                echo -KPIC -xcode=pic32 ;;
4054             -W*,*)                echo $flag              ;;
4055             -f*-*|-W*|-mimpure-text)                      ;;
4056             -shared)              echo -G                 ;;
4057             *)                    echo $flag              ;;
4058         esac
4059     done
4060 }
4061
4062 tms470_flags(){
4063     for flag; do
4064         case $flag in
4065             -march=*|-mcpu=*)
4066                 case "${flag#*=}" in
4067                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
4068                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
4069                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
4070                     armv6*|arm11*)          echo -mv=6   ;;
4071                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
4072                                             echo -mv=5e  ;;
4073                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
4074                 esac
4075                 ;;
4076             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
4077             -mfpu=vfp)      echo --float_support=vfpv2        ;;
4078             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
4079             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
4080             -msoft-float)   echo --float_support=vfplib       ;;
4081             -O[0-3]|-mf=*)  echo $flag                        ;;
4082             -g)             echo -g -mn                       ;;
4083             -pds=*)         echo $flag                        ;;
4084             -D*|-I*)        echo $flag                        ;;
4085             --gcc|--abi=*)  echo $flag                        ;;
4086             -me)            echo $flag                        ;;
4087         esac
4088     done
4089 }
4090
4091 probe_cc(){
4092     pfx=$1
4093     _cc=$2
4094     first=$3
4095
4096     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
4097     unset _ld_o _ldflags _ld_lib _ld_path
4098     unset _depflags _DEPCMD _DEPFLAGS
4099     _flags_filter=echo
4100
4101     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
4102         true # no-op to avoid reading stdin in following checks
4103     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
4104         _type=llvm_gcc
4105         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
4106         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
4107         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4108         _cflags_speed='-O3'
4109         _cflags_size='-Os'
4110     elif $_cc -v 2>&1 | grep -qi ^gcc; then
4111         _type=gcc
4112         gcc_version=$($_cc --version | head -n1)
4113         gcc_basever=$($_cc -dumpversion)
4114         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
4115         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
4116         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
4117         case $gcc_basever in
4118             2) ;;
4119             2.*) ;;
4120             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
4121         esac
4122         if [ "$first" = true ]; then
4123             case $gcc_basever in
4124                 4.2*)
4125                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
4126             esac
4127         fi
4128         _cflags_speed='-O3'
4129         _cflags_size='-Os'
4130     elif $_cc --version 2>/dev/null | grep -q ^icc; then
4131         _type=icc
4132         _ident=$($_cc --version | head -n1)
4133         _depflags='-MMD'
4134         _cflags_speed='-O3'
4135         _cflags_size='-Os'
4136         _cflags_noopt='-O1'
4137         _flags_filter=icc_flags
4138     elif $_cc -v 2>&1 | grep -q xlc; then
4139         _type=xlc
4140         _ident=$($_cc -qversion 2>/dev/null | head -n1)
4141         _cflags_speed='-O5'
4142         _cflags_size='-O5 -qcompact'
4143     elif $_cc -V 2>/dev/null | grep -q Compaq; then
4144         _type=ccc
4145         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
4146         _DEPFLAGS='-M'
4147         _cflags_speed='-fast'
4148         _cflags_size='-O1'
4149         _flags_filter=ccc_flags
4150     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
4151         test -d "$sysroot" || die "No valid sysroot specified."
4152         _type=armcc
4153         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
4154         armcc_conf="$PWD/armcc.conf"
4155         $_cc --arm_linux_configure                 \
4156              --arm_linux_config_file="$armcc_conf" \
4157              --configure_sysroot="$sysroot"        \
4158              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
4159              die "Error creating armcc configuration file."
4160         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
4161         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
4162         as_default="${cross_prefix}gcc"
4163         _depflags='-MMD'
4164         _cflags_speed='-O3'
4165         _cflags_size='-Os'
4166     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
4167         _type=tms470
4168         _ident=$($_cc -version | head -n1 | tr -s ' ')
4169         _flags='--gcc --abi=eabi -me'
4170         _cc_e='-ppl -fe=$@'
4171         _cc_o='-fe=$@'
4172         _depflags='-ppa -ppd=$(@:.o=.d)'
4173         _cflags_speed='-O3 -mf=5'
4174         _cflags_size='-O3 -mf=2'
4175         _flags_filter=tms470_flags
4176     elif $_cc -v 2>&1 | grep -q clang; then
4177         _type=clang
4178         _ident=$($_cc --version 2>/dev/null | head -n1)
4179         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4180         _cflags_speed='-O3'
4181         _cflags_size='-Oz'
4182     elif $_cc -V 2>&1 | grep -q Sun; then
4183         _type=suncc
4184         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
4185         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
4186         _DEPFLAGS='-xM1 -xc99'
4187         _ldflags='-std=c99'
4188         _cflags_speed='-O5'
4189         _cflags_size='-O5 -xspace'
4190         _flags_filter=suncc_flags
4191     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
4192         _type=pathscale
4193         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4194         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4195         _cflags_speed='-O2'
4196         _cflags_size='-Os'
4197         _flags_filter='filter_out -Wdisabled-optimization'
4198     elif $_cc -v 2>&1 | grep -q Open64; then
4199         _type=open64
4200         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4201         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4202         _cflags_speed='-O2'
4203         _cflags_size='-Os'
4204         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
4205     elif $_cc -V 2>&1 | grep -q Portland; then
4206         _type=pgi
4207         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
4208         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
4209         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
4210         _cflags_size="-O2 -Munroll=c:1 $opt_common"
4211         _cflags_noopt="-O"
4212         _flags_filter=pgi_flags
4213     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
4214         _type=armasm
4215         _ident=$($_cc | head -n1)
4216         # 4509: "This form of conditional instruction is deprecated"
4217         _flags="-nologo -ignore 4509"
4218         _flags_filter=armasm_flags
4219     elif $_cc 2>&1 | grep -q Intel; then
4220         _type=icl
4221         _ident=$($_cc 2>&1 | head -n1)
4222         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
4223         # Not only is O3 broken on 13.x+ but it is slower on all previous
4224         # versions (tested) as well.
4225         _cflags_speed="-O2"
4226         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
4227         if $_cc 2>&1 | grep -q Linker; then
4228             _ld_o='-out:$@'
4229         else
4230             _ld_o='-Fe$@'
4231         fi
4232         _cc_o='-Fo$@'
4233         _cc_e='-P'
4234         _flags_filter=icl_flags
4235         _ld_lib='lib%.a'
4236         _ld_path='-libpath:'
4237         # -Qdiag-error to make icl error when seeing certain unknown arguments
4238         _flags='-nologo -Qdiag-error:4044,10157'
4239         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
4240         # with MSVC which enables it by default.
4241         _cflags='-Qms0 -Qvec- -Qsimd- -GS -fp:precise'
4242         disable stripping
4243     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
4244         # lld can emulate multiple different linkers; in ms link.exe mode,
4245         # the -? parameter gives the help output which contains an identifyable
4246         # string, while it gives an error in other modes.
4247         _type=lld-link
4248         # The link.exe mode doesn't have a switch for getting the version,
4249         # but we can force it back to gnu mode and get the version from there.
4250         _ident=$($_cc -flavor gnu --version 2>/dev/null)
4251         _ld_o='-out:$@'
4252         _flags_filter=msvc_flags
4253         _ld_lib='lib%.a'
4254         _ld_path='-libpath:'
4255     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
4256         _type=msvc
4257         _ident=$($_cc 2>&1 | head -n1)
4258         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
4259         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
4260         _cflags_speed="-O2"
4261         _cflags_size="-O1"
4262         _cflags_noopt="-O1"
4263         if $_cc -nologo- 2>&1 | grep -q Linker; then
4264             _ld_o='-out:$@'
4265         else
4266             _ld_o='-Fe$@'
4267         fi
4268         _cc_o='-Fo$@'
4269         _cc_e='-P -Fi$@'
4270         _flags_filter=msvc_flags
4271         _ld_lib='lib%.a'
4272         _ld_path='-libpath:'
4273         _flags='-nologo'
4274         disable stripping
4275     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
4276         _type=cparser
4277         _ident=$($_cc --version | head -n1)
4278         _depflags='-MMD'
4279         _cflags_speed='-O4'
4280         _cflags_size='-O2'
4281         _flags_filter=cparser_flags
4282     fi
4283
4284     eval ${pfx}_type=\$_type
4285     eval ${pfx}_ident=\$_ident
4286 }
4287
4288 set_ccvars(){
4289     eval ${1}_C=\${_cc_c-\${${1}_C}}
4290     eval ${1}_E=\${_cc_e-\${${1}_E}}
4291     eval ${1}_O=\${_cc_o-\${${1}_O}}
4292
4293     if [ -n "$_depflags" ]; then
4294         eval ${1}_DEPFLAGS=\$_depflags
4295     else
4296         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
4297         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
4298         eval DEP${1}FLAGS=\$_flags
4299     fi
4300 }
4301
4302 probe_cc cc "$cc" "true"
4303 cflags_filter=$_flags_filter
4304 cflags_speed=$_cflags_speed
4305 cflags_size=$_cflags_size
4306 cflags_noopt=$_cflags_noopt
4307 add_cflags $_flags $_cflags
4308 cc_ldflags=$_ldflags
4309 set_ccvars CC
4310 set_ccvars CXX
4311
4312 probe_cc hostcc "$host_cc"
4313 host_cflags_filter=$_flags_filter
4314 host_cflags_speed=$_cflags_speed
4315 add_host_cflags  $_flags $_cflags
4316 set_ccvars HOSTCC
4317
4318 test -n "$cc_type" && enable $cc_type ||
4319     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4320
4321 : ${as_default:=$cc}
4322 : ${objcc_default:=$cc}
4323 : ${dep_cc_default:=$cc}
4324 : ${ld_default:=$cc}
4325 : ${host_ld_default:=$host_cc}
4326 set_default ar as objcc dep_cc ld ln_s host_ld windres
4327
4328 probe_cc as "$as"
4329 asflags_filter=$_flags_filter
4330 add_asflags $_flags $_cflags
4331 set_ccvars AS
4332
4333 probe_cc objcc "$objcc"
4334 objcflags_filter=$_flags_filter
4335 add_objcflags $_flags $_cflags
4336 set_ccvars OBJC
4337
4338 probe_cc ld "$ld"
4339 ldflags_filter=$_flags_filter
4340 add_ldflags $_flags $_ldflags
4341 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4342 LD_O=${_ld_o-$LD_O}
4343 LD_LIB=${_ld_lib-$LD_LIB}
4344 LD_PATH=${_ld_path-$LD_PATH}
4345
4346 probe_cc hostld "$host_ld"
4347 host_ldflags_filter=$_flags_filter
4348 add_host_ldflags $_flags $_ldflags
4349 HOSTLD_O=${_ld_o-$HOSTLD_O}
4350
4351 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4352     probe_cc depcc "$dep_cc"
4353     CCDEP=${_DEPCMD:-$DEPCMD}
4354     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4355     DEPCCFLAGS=$_flags
4356 fi
4357
4358 if $ar 2>&1 | grep -q Microsoft; then
4359     arflags="-nologo"
4360     ar_o='-out:$@'
4361 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
4362     arflags="rq"
4363     ar_o='$@'
4364 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
4365     arflags='-Xany -r -c'
4366     ar_o='$@'
4367 elif $ar 2>&1 | grep -q "\[D\] "; then
4368     arflags="rcD"
4369     ar_o='$@'
4370 else
4371     arflags="rc"
4372     ar_o='$@'
4373 fi
4374
4375 add_cflags $extra_cflags
4376 add_cxxflags $extra_cxxflags
4377 add_objcflags $extra_objcflags
4378 add_asflags $extra_cflags
4379
4380 if test -n "$sysroot"; then
4381     case "$cc_type" in
4382         gcc|llvm_gcc|clang)
4383             add_cppflags --sysroot="$sysroot"
4384             add_ldflags --sysroot="$sysroot"
4385 # On Darwin --sysroot may be ignored, -isysroot always affects headers and linking
4386             add_cppflags -isysroot "$sysroot"
4387             add_ldflags -isysroot "$sysroot"
4388         ;;
4389         tms470)
4390             add_cppflags -I"$sysinclude"
4391             add_ldflags  --sysroot="$sysroot"
4392         ;;
4393     esac
4394 fi
4395
4396 if test "$cpu" = host; then
4397     enabled cross_compile &&
4398         die "--cpu=host makes no sense when cross-compiling."
4399
4400     case "$cc_type" in
4401         gcc|llvm_gcc)
4402             check_native(){
4403                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4404                 sed -n "/cc1.*$1=/{
4405                             s/.*$1=\\([^ ]*\\).*/\\1/
4406                             p
4407                             q
4408                         }" $TMPE
4409             }
4410             cpu=$(check_native -march || check_native -mcpu)
4411         ;;
4412         clang)
4413             check_native(){
4414                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4415                 sed -n "/cc1.*-target-cpu /{
4416                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4417                             p
4418                             q
4419                         }" $TMPE
4420             }
4421             cpu=$(check_native -march)
4422         ;;
4423     esac
4424
4425     test "${cpu:-host}" = host &&
4426         die "--cpu=host not supported with compiler $cc"
4427 fi
4428
4429 # Deal with common $arch aliases
4430 case "$arch" in
4431     aarch64|arm64)
4432         arch="aarch64"
4433     ;;
4434     arm*|iPad*|iPhone*)
4435         arch="arm"
4436     ;;
4437     mips*|IP*)
4438         case "$arch" in
4439         *el)
4440             add_cppflags -EL
4441             add_ldflags -EL
4442         ;;
4443         *eb)
4444             add_cppflags -EB
4445             add_ldflags -EB
4446         ;;
4447         esac
4448         arch="mips"
4449     ;;
4450     parisc*|hppa*)
4451         arch="parisc"
4452     ;;
4453     "Power Macintosh"|ppc*|powerpc*)
4454         arch="ppc"
4455     ;;
4456     s390|s390x)
4457         arch="s390"
4458     ;;
4459     sh4|sh)
4460         arch="sh4"
4461     ;;
4462     sun4*|sparc*)
4463         arch="sparc"
4464     ;;
4465     tilegx|tile-gx)
4466         arch="tilegx"
4467     ;;
4468     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4469         arch="x86"
4470     ;;
4471 esac
4472
4473 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4474 enable $arch
4475
4476 # Add processor-specific flags
4477 if enabled aarch64; then
4478
4479     case $cpu in
4480         armv*)
4481             cpuflags="-march=$cpu"
4482         ;;
4483         *)
4484             cpuflags="-mcpu=$cpu"
4485         ;;
4486     esac
4487
4488 elif enabled alpha; then
4489
4490     cpuflags="-mcpu=$cpu"
4491
4492 elif enabled arm; then
4493
4494     check_arm_arch() {
4495         check_cpp_condition stddef.h \
4496             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4497             $cpuflags
4498     }
4499
4500     probe_arm_arch() {
4501         if   check_arm_arch 4;        then echo armv4
4502         elif check_arm_arch 4T;       then echo armv4t
4503         elif check_arm_arch 5;        then echo armv5
4504         elif check_arm_arch 5E;       then echo armv5e
4505         elif check_arm_arch 5T;       then echo armv5t
4506         elif check_arm_arch 5TE;      then echo armv5te
4507         elif check_arm_arch 5TEJ;     then echo armv5te
4508         elif check_arm_arch 6;        then echo armv6
4509         elif check_arm_arch 6J;       then echo armv6j
4510         elif check_arm_arch 6K;       then echo armv6k
4511         elif check_arm_arch 6Z;       then echo armv6z
4512         elif check_arm_arch 6ZK;      then echo armv6zk
4513         elif check_arm_arch 6T2;      then echo armv6t2
4514         elif check_arm_arch 7;        then echo armv7
4515         elif check_arm_arch 7A  7_A;  then echo armv7-a
4516         elif check_arm_arch 7S;       then echo armv7-a
4517         elif check_arm_arch 7R  7_R;  then echo armv7-r
4518         elif check_arm_arch 7M  7_M;  then echo armv7-m
4519         elif check_arm_arch 7EM 7E_M; then echo armv7-m
4520         elif check_arm_arch 8A  8_A;  then echo armv8-a
4521         fi
4522     }
4523
4524     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4525
4526     case $cpu in
4527         armv*)
4528             cpuflags="-march=$cpu"
4529             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4530         ;;
4531         *)
4532             cpuflags="-mcpu=$cpu"
4533             case $cpu in
4534                 cortex-a*)                               subarch=armv7a  ;;
4535                 cortex-r*)                               subarch=armv7r  ;;
4536                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4537                 arm11*)                                  subarch=armv6   ;;
4538                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4539                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4540                 *)                             subarch=$(probe_arm_arch) ;;
4541             esac
4542         ;;
4543     esac
4544
4545     case "$subarch" in
4546         armv5t*)    enable fast_clz                ;;
4547         armv[6-8]*)
4548             enable fast_clz
4549             disabled fast_unaligned || enable fast_unaligned
4550             ;;
4551     esac
4552
4553 elif enabled avr32; then
4554
4555     case $cpu in
4556         ap7[02]0[0-2])
4557             subarch="avr32_ap"
4558             cpuflags="-mpart=$cpu"
4559         ;;
4560         ap)
4561             subarch="avr32_ap"
4562             cpuflags="-march=$cpu"
4563         ;;
4564         uc3[ab]*)
4565             subarch="avr32_uc"
4566             cpuflags="-mcpu=$cpu"
4567         ;;
4568         uc)
4569             subarch="avr32_uc"
4570             cpuflags="-march=$cpu"
4571         ;;
4572     esac
4573
4574 elif enabled bfin; then
4575
4576     cpuflags="-mcpu=$cpu"
4577
4578 elif enabled mips; then
4579
4580     cpuflags="-march=$cpu"
4581
4582     if [ "$cpu" != "generic" ]; then
4583         disable mips32r2
4584         disable mips32r5
4585         disable mips64r2
4586         disable mips32r6
4587         disable mips64r6
4588         disable loongson2
4589         disable loongson3
4590
4591         case $cpu in
4592             24kc|24kf*|24kec|34kc|1004kc|24kef*|34kf*|1004kf*|74kc|74kf)
4593                 enable mips32r2
4594                 disable msa
4595             ;;
4596             p5600|i6400|p6600)
4597                 disable mipsdsp
4598                 disable mipsdspr2
4599             ;;
4600             loongson*)
4601                 enable loongson2
4602                 enable loongson3
4603                 enable local_aligned_8 local_aligned_16 local_aligned_32
4604                 enable simd_align_16
4605                 enable fast_64bit
4606                 enable fast_clz
4607                 enable fast_cmov
4608                 enable fast_unaligned
4609                 disable aligned_stack
4610                 disable mipsfpu
4611                 disable mipsdsp
4612                 disable mipsdspr2
4613                 case $cpu in
4614                     loongson3*)
4615                         cpuflags="-march=loongson3a -mhard-float -fno-expensive-optimizations"
4616                     ;;
4617                     loongson2e)
4618                         cpuflags="-march=loongson2e -mhard-float -fno-expensive-optimizations"
4619                     ;;
4620                     loongson2f)
4621                         cpuflags="-march=loongson2f -mhard-float -fno-expensive-optimizations"
4622                     ;;
4623                 esac
4624             ;;
4625             *)
4626                 # Unknown CPU. Disable everything.
4627                 warn "unknown CPU. Disabling all MIPS optimizations."
4628                 disable mipsfpu
4629                 disable mipsdsp
4630                 disable mipsdspr2
4631                 disable msa
4632                 disable mmi
4633             ;;
4634         esac
4635
4636         case $cpu in
4637             24kc)
4638                 disable mipsfpu
4639                 disable mipsdsp
4640                 disable mipsdspr2
4641             ;;
4642             24kf*)
4643                 disable mipsdsp
4644                 disable mipsdspr2
4645             ;;
4646             24kec|34kc|1004kc)
4647                 disable mipsfpu
4648                 disable mipsdspr2
4649             ;;
4650             24kef*|34kf*|1004kf*)
4651                 disable mipsdspr2
4652             ;;
4653             74kc)
4654                 disable mipsfpu
4655             ;;
4656             p5600)
4657                 enable mips32r5
4658                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
4659             ;;
4660             i6400)
4661                 enable mips64r6
4662                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4663             ;;
4664             p6600)
4665                 enable mips64r6
4666                 check_cflags "-mtune=p6600 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4667             ;;
4668         esac
4669     else
4670         # We do not disable anything. Is up to the user to disable the unwanted features.
4671         warn 'generic cpu selected'
4672     fi
4673
4674 elif enabled ppc; then
4675
4676     disable ldbrx
4677
4678     case $(tolower $cpu) in
4679         601|ppc601|powerpc601)
4680             cpuflags="-mcpu=601"
4681             disable altivec
4682         ;;
4683         603*|ppc603*|powerpc603*)
4684             cpuflags="-mcpu=603"
4685             disable altivec
4686         ;;
4687         604*|ppc604*|powerpc604*)
4688             cpuflags="-mcpu=604"
4689             disable altivec
4690         ;;
4691         g3|75*|ppc75*|powerpc75*)
4692             cpuflags="-mcpu=750"
4693             disable altivec
4694         ;;
4695         g4|745*|ppc745*|powerpc745*)
4696             cpuflags="-mcpu=7450"
4697             disable vsx
4698         ;;
4699         74*|ppc74*|powerpc74*)
4700             cpuflags="-mcpu=7400"
4701             disable vsx
4702         ;;
4703         g5|970|ppc970|powerpc970)
4704             cpuflags="-mcpu=970"
4705             disable vsx
4706         ;;
4707         power[3-6]*)
4708             cpuflags="-mcpu=$cpu"
4709             disable vsx
4710         ;;
4711         power[7-8]*)
4712             cpuflags="-mcpu=$cpu"
4713         ;;
4714         cell)
4715             cpuflags="-mcpu=cell"
4716             enable ldbrx
4717             disable vsx
4718         ;;
4719         e500mc)
4720             cpuflags="-mcpu=e500mc"
4721             disable altivec
4722         ;;
4723         e500v2)
4724             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
4725             disable altivec
4726             disable dcbzl
4727         ;;
4728         e500)
4729             cpuflags="-mcpu=8540 -mhard-float"
4730             disable altivec
4731             disable dcbzl
4732         ;;
4733     esac
4734
4735 elif enabled sparc; then
4736
4737     case $cpu in
4738         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
4739             cpuflags="-mcpu=$cpu"
4740         ;;
4741         ultrasparc*|niagara[234])
4742             cpuflags="-mcpu=$cpu"
4743         ;;
4744     esac
4745
4746 elif enabled x86; then
4747
4748     case $cpu in
4749         i[345]86|pentium)
4750             cpuflags="-march=$cpu"
4751             disable i686
4752             disable mmx
4753         ;;
4754         # targets that do NOT support nopl and conditional mov (cmov)
4755         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
4756             cpuflags="-march=$cpu"
4757             disable i686
4758         ;;
4759         # targets that do support nopl and conditional mov (cmov)
4760         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
4761         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|skylake*|knl\
4762         |amdfam10|barcelona|b[dt]ver*|znver*)
4763             cpuflags="-march=$cpu"
4764             enable i686
4765             enable fast_cmov
4766         ;;
4767         # targets that do support conditional mov but on which it's slow
4768         pentium4|pentium4m|prescott|nocona)
4769             cpuflags="-march=$cpu"
4770             enable i686
4771             disable fast_cmov
4772         ;;
4773     esac
4774
4775 fi
4776
4777 if [ "$cpu" != generic ]; then
4778     add_cflags  $cpuflags
4779     add_asflags $cpuflags
4780     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
4781 fi
4782
4783 # compiler sanity check
4784 check_exec <<EOF
4785 int main(void){ return 0; }
4786 EOF
4787 if test "$?" != 0; then
4788     echo "$cc is unable to create an executable file."
4789     if test -z "$cross_prefix" && ! enabled cross_compile ; then
4790         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
4791         echo "Only do this if you know what cross compiling means."
4792     fi
4793     die "C compiler test failed."
4794 fi
4795
4796 add_cppflags -D_ISOC99_SOURCE
4797 add_cxxflags -D__STDC_CONSTANT_MACROS
4798 check_cxxflags -std=c++11 || check_cxxflags -std=c++0x
4799
4800 # some compilers silently accept -std=c11, so we also need to check that the
4801 # version macro is defined properly
4802 if test_cflags_cc -std=c11 ctype.h "__STDC_VERSION__ >= 201112L"; then
4803     add_cflags -std=c11
4804 else
4805     check_cflags -std=c99
4806 fi
4807
4808 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
4809 #include <stdlib.h>
4810 EOF
4811 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
4812 #include <stdlib.h>
4813 EOF
4814
4815 add_host_cppflags -D_ISOC99_SOURCE
4816 check_host_cflags -std=c99
4817 check_host_cflags -Wall
4818 check_host_cflags $host_cflags_speed
4819
4820 check_64bit(){
4821     arch32=$1
4822     arch64=$2
4823     expr=$3
4824     check_code cc "" "int test[2*($expr) - 1]" &&
4825         subarch=$arch64 || subarch=$arch32
4826 }
4827
4828 case "$arch" in
4829     aarch64|alpha|ia64)
4830         spic=$shared
4831     ;;
4832     mips)
4833         check_64bit mips mips64 '_MIPS_SIM > 1'
4834         spic=$shared
4835     ;;
4836     parisc)
4837         check_64bit parisc parisc64 'sizeof(void *) > 4'
4838         spic=$shared
4839     ;;
4840     ppc)
4841         check_64bit ppc ppc64 'sizeof(void *) > 4'
4842         spic=$shared
4843     ;;
4844     s390)
4845         check_64bit s390 s390x 'sizeof(void *) > 4'
4846         spic=$shared
4847     ;;
4848     sparc)
4849         check_64bit sparc sparc64 'sizeof(void *) > 4'
4850         spic=$shared
4851     ;;
4852     x86)
4853         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
4854         # Treat x32 as x64 for now. Note it also needs spic=$shared
4855         test "$subarch" = "x86_32" && check_cpp_condition stddef.h 'defined(__x86_64__)' &&
4856             subarch=x86_64
4857         if test "$subarch" = "x86_64"; then
4858             spic=$shared
4859         fi
4860     ;;
4861     ppc)
4862         check_cc <<EOF && subarch="ppc64"
4863         int test[(int)sizeof(char*) - 7];
4864 EOF
4865     ;;
4866 esac
4867
4868 enable $subarch
4869 enabled spic && enable_weak pic
4870
4871 enabled x86_64 &