configure: libnpp does not need to link libcuda
[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
113 Program options:
114   --disable-programs       do not build command line programs
115   --disable-ffmpeg         disable ffmpeg build
116   --disable-ffplay         disable ffplay build
117   --disable-ffprobe        disable ffprobe build
118   --disable-ffserver       disable ffserver build
119
120 Documentation options:
121   --disable-doc            do not build documentation
122   --disable-htmlpages      do not build HTML documentation pages
123   --disable-manpages       do not build man documentation pages
124   --disable-podpages       do not build POD documentation pages
125   --disable-txtpages       do not build text documentation pages
126
127 Component options:
128   --disable-avdevice       disable libavdevice build
129   --disable-avcodec        disable libavcodec build
130   --disable-avformat       disable libavformat build
131   --disable-swresample     disable libswresample build
132   --disable-swscale        disable libswscale build
133   --disable-postproc       disable libpostproc build
134   --disable-avfilter       disable libavfilter build
135   --enable-avresample      enable libavresample build [no]
136   --disable-pthreads       disable pthreads [autodetect]
137   --disable-w32threads     disable Win32 threads [autodetect]
138   --disable-os2threads     disable OS/2 threads [autodetect]
139   --disable-network        disable network support [no]
140   --disable-dct            disable DCT code
141   --disable-dwt            disable DWT code
142   --disable-error-resilience disable error resilience code
143   --disable-lsp            disable LSP code
144   --disable-lzo            disable LZO decoder code
145   --disable-mdct           disable MDCT code
146   --disable-rdft           disable RDFT code
147   --disable-fft            disable FFT code
148   --disable-faan           disable floating point AAN (I)DCT code
149   --disable-pixelutils     disable pixel utils in libavutil
150
151 Individual component options:
152   --disable-everything     disable all components listed below
153   --disable-encoder=NAME   disable encoder NAME
154   --enable-encoder=NAME    enable encoder NAME
155   --disable-encoders       disable all encoders
156   --disable-decoder=NAME   disable decoder NAME
157   --enable-decoder=NAME    enable decoder NAME
158   --disable-decoders       disable all decoders
159   --disable-hwaccel=NAME   disable hwaccel NAME
160   --enable-hwaccel=NAME    enable hwaccel NAME
161   --disable-hwaccels       disable all hwaccels
162   --disable-muxer=NAME     disable muxer NAME
163   --enable-muxer=NAME      enable muxer NAME
164   --disable-muxers         disable all muxers
165   --disable-demuxer=NAME   disable demuxer NAME
166   --enable-demuxer=NAME    enable demuxer NAME
167   --disable-demuxers       disable all demuxers
168   --enable-parser=NAME     enable parser NAME
169   --disable-parser=NAME    disable parser NAME
170   --disable-parsers        disable all parsers
171   --enable-bsf=NAME        enable bitstream filter NAME
172   --disable-bsf=NAME       disable bitstream filter NAME
173   --disable-bsfs           disable all bitstream filters
174   --enable-protocol=NAME   enable protocol NAME
175   --disable-protocol=NAME  disable protocol NAME
176   --disable-protocols      disable all protocols
177   --enable-indev=NAME      enable input device NAME
178   --disable-indev=NAME     disable input device NAME
179   --disable-indevs         disable input devices
180   --enable-outdev=NAME     enable output device NAME
181   --disable-outdev=NAME    disable output device NAME
182   --disable-outdevs        disable output devices
183   --disable-devices        disable all devices
184   --enable-filter=NAME     enable filter NAME
185   --disable-filter=NAME    disable filter NAME
186   --disable-filters        disable all filters
187
188 External library support:
189
190   Using any of the following switches will allow FFmpeg to link to the
191   corresponding external library. All the components depending on that library
192   will become enabled, if all their other dependencies are met and they are not
193   explicitly disabled. E.g. --enable-libwavpack will enable linking to
194   libwavpack and allow the libwavpack encoder to be built, unless it is
195   specifically disabled with --disable-encoder=libwavpack.
196
197   Note that only the system libraries are auto-detected. All the other external
198   libraries must be explicitly enabled.
199
200   Also note that the following help text describes the purpose of the libraries
201   themselves, not all their features will necessarily be usable by FFmpeg.
202
203   --enable-avisynth        enable reading of AviSynth script files [no]
204   --disable-bzlib          disable bzlib [autodetect]
205   --enable-chromaprint     enable audio fingerprinting with chromaprint [no]
206   --enable-frei0r          enable frei0r video filtering [no]
207   --enable-gcrypt          enable gcrypt, needed for rtmp(t)e support
208                            if openssl, librtmp or gmp is not used [no]
209   --enable-gmp             enable gmp, needed for rtmp(t)e support
210                            if openssl or librtmp is not used [no]
211   --enable-gnutls          enable gnutls, needed for https support
212                            if openssl is not used [no]
213   --disable-iconv          disable iconv [autodetect]
214   --enable-jni             enable JNI support [no]
215   --enable-ladspa          enable LADSPA audio filtering [no]
216   --enable-libass          enable libass subtitles rendering,
217                            needed for subtitles and ass filter [no]
218   --enable-libbluray       enable BluRay reading using libbluray [no]
219   --enable-libbs2b         enable bs2b DSP library [no]
220   --enable-libcaca         enable textual display using libcaca [no]
221   --enable-libcelt         enable CELT decoding via libcelt [no]
222   --enable-libcdio         enable audio CD grabbing with libcdio [no]
223   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
224                            and libraw1394 [no]
225   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
226   --enable-libflite        enable flite (voice synthesis) support via libflite [no]
227   --enable-libfontconfig   enable libfontconfig, useful for drawtext filter [no]
228   --enable-libfreetype     enable libfreetype, needed for drawtext filter [no]
229   --enable-libfribidi      enable libfribidi, improves drawtext filter [no]
230   --enable-libgme          enable Game Music Emu via libgme [no]
231   --enable-libgsm          enable GSM de/encoding via libgsm [no]
232   --enable-libiec61883     enable iec61883 via libiec61883 [no]
233   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
234   --enable-libkvazaar      enable HEVC encoding via libkvazaar [no]
235   --enable-libmodplug      enable ModPlug via libmodplug [no]
236   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
237   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
238   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
239   --enable-libopencv       enable video filtering via libopencv [no]
240   --enable-libopenh264     enable H.264 encoding via OpenH264 [no]
241   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
242   --enable-libopenmpt      enable decoding tracked files via libopenmpt [no]
243   --enable-libopus         enable Opus de/encoding via libopus [no]
244   --enable-libpulse        enable Pulseaudio input via libpulse [no]
245   --enable-librsvg         enable SVG rasterization via librsvg [no]
246   --enable-librubberband   enable rubberband needed for rubberband filter [no]
247   --enable-librtmp         enable RTMP[E] support via librtmp [no]
248   --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
249   --enable-libsmbclient    enable Samba protocol via libsmbclient [no]
250   --enable-libsnappy       enable Snappy compression, needed for hap encoding [no]
251   --enable-libsoxr         enable Include libsoxr resampling [no]
252   --enable-libspeex        enable Speex de/encoding via libspeex [no]
253   --enable-libssh          enable SFTP protocol via libssh [no]
254   --enable-libtesseract    enable Tesseract, needed for ocr filter [no]
255   --enable-libtheora       enable Theora encoding via libtheora [no]
256   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
257   --enable-libv4l2         enable libv4l2/v4l-utils [no]
258   --enable-libvidstab      enable video stabilization using vid.stab [no]
259   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
260   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
261                            native implementation exists [no]
262   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
263   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
264   --enable-libwebp         enable WebP encoding via libwebp [no]
265   --enable-libx264         enable H.264 encoding via x264 [no]
266   --enable-libx265         enable HEVC encoding via x265 [no]
267   --enable-libxavs         enable AVS encoding via xavs [no]
268   --enable-libxcb          enable X11 grabbing using XCB [autodetect]
269   --enable-libxcb-shm      enable X11 grabbing shm communication [autodetect]
270   --enable-libxcb-xfixes   enable X11 grabbing mouse rendering [autodetect]
271   --enable-libxcb-shape    enable X11 grabbing shape rendering [autodetect]
272   --enable-libxvid         enable Xvid encoding via xvidcore,
273                            native MPEG-4/Xvid encoder exists [no]
274   --enable-libzimg         enable z.lib, needed for zscale filter [no]
275   --enable-libzmq          enable message passing via libzmq [no]
276   --enable-libzvbi         enable teletext support via libzvbi [no]
277   --disable-lzma           disable lzma [autodetect]
278   --enable-decklink        enable Blackmagic DeckLink I/O support [no]
279   --enable-mediacodec      enable Android MediaCodec support [no]
280   --enable-netcdf          enable NetCDF, needed for sofalizer filter [no]
281   --enable-openal          enable OpenAL 1.1 capture support [no]
282   --enable-opencl          enable OpenCL code
283   --enable-opengl          enable OpenGL rendering [no]
284   --enable-openssl         enable openssl, needed for https support
285                            if gnutls is not used [no]
286   --disable-schannel       disable SChannel SSP, needed for TLS support on
287                            Windows if openssl and gnutls are not used [autodetect]
288   --disable-sdl2           disable sdl2 [autodetect]
289   --disable-securetransport disable Secure Transport, needed for TLS support
290                            on OSX if openssl and gnutls are not used [autodetect]
291   --disable-xlib           disable xlib [autodetect]
292   --disable-zlib           disable zlib [autodetect]
293
294   The following libraries provide various hardware acceleration features:
295   --disable-audiotoolbox   disable Apple AudioToolbox code [autodetect]
296   --disable-cuda           disable dynamically linked Nvidia CUDA code [autodetect]
297   --enable-cuda-sdk        enable CUDA features that require the CUDA SDK [no]
298   --disable-cuvid          disable Nvidia CUVID support [autodetect]
299   --disable-d3d11va        disable Microsoft Direct3D 11 video acceleration code [autodetect]
300   --disable-dxva2          disable Microsoft DirectX 9 video acceleration code [autodetect]
301   --enable-libmfx          enable Intel MediaSDK (AKA Quick Sync Video) code via libmfx [no]
302   --enable-libnpp          enable Nvidia Performance Primitives-based code [no]
303   --enable-mmal            enable Broadcom Multi-Media Abstraction Layer (Raspberry Pi) via MMAL [no]
304   --disable-nvenc          disable Nvidia video encoding code [autodetect]
305   --enable-omx             enable OpenMAX IL code [no]
306   --enable-omx-rpi         enable OpenMAX IL code for Raspberry Pi [no]
307   --disable-vaapi          disable Video Acceleration API (mainly Unix/Intel) code [autodetect]
308   --disable-vda            disable Apple Video Decode Acceleration code [autodetect]
309   --disable-vdpau          disable Nvidia Video Decode and Presentation API for Unix code [autodetect]
310   --disable-videotoolbox   disable VideoToolbox code [autodetect]
311
312 Toolchain options:
313   --arch=ARCH              select architecture [$arch]
314   --cpu=CPU                select the minimum required CPU (affects
315                            instruction selection, may crash on older CPUs)
316   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
317   --progs-suffix=SUFFIX    program name suffix []
318   --enable-cross-compile   assume a cross-compiler is used
319   --sysroot=PATH           root of cross-build tree
320   --sysinclude=PATH        location of cross-build system headers
321   --target-os=OS           compiler targets OS [$target_os]
322   --target-exec=CMD        command to run executables on target
323   --target-path=DIR        path to view of build directory on target
324   --target-samples=DIR     path to samples directory on target
325   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
326   --toolchain=NAME         set tool defaults according to NAME
327   --nm=NM                  use nm tool NM [$nm_default]
328   --ar=AR                  use archive tool AR [$ar_default]
329   --as=AS                  use assembler AS [$as_default]
330   --ln_s=LN_S              use symbolic link tool LN_S [$ln_s_default]
331   --strip=STRIP            use strip tool STRIP [$strip_default]
332   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
333   --yasmexe=EXE            use yasm-compatible assembler EXE [$yasmexe_default]
334   --cc=CC                  use C compiler CC [$cc_default]
335   --cxx=CXX                use C compiler CXX [$cxx_default]
336   --objcc=OCC              use ObjC compiler OCC [$cc_default]
337   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
338   --nvcc=NVCC              use Nvidia CUDA compiler NVCC [$nvcc_default]
339   --ld=LD                  use linker LD [$ld_default]
340   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
341   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
342   --ranlib=RANLIB          use ranlib RANLIB [$ranlib_default]
343   --doxygen=DOXYGEN        use DOXYGEN to generate API doc [$doxygen_default]
344   --host-cc=HOSTCC         use host C compiler HOSTCC
345   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
346   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
347   --host-ld=HOSTLD         use host linker HOSTLD
348   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
349   --host-libs=HLIBS        use libs HLIBS when linking for host
350   --host-os=OS             compiler host OS [$target_os]
351   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
352   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
353   --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
354   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
355   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
356   --extra-ldlibflags=ELDFLAGS add ELDFLAGS to LDLIBFLAGS [$LDLIBFLAGS]
357   --extra-libs=ELIBS       add ELIBS [$ELIBS]
358   --extra-version=STRING   version string suffix []
359   --optflags=OPTFLAGS      override optimization-related compiler flags
360   --nvccflags=NVCCFLAGS    override nvcc flags [$nvccflags_default]
361   --build-suffix=SUFFIX    library name suffix []
362   --enable-pic             build position-independent code
363   --enable-thumb           compile for Thumb instruction set
364   --enable-lto             use link-time optimization
365   --env="ENV=override"     override the environment variables
366
367 Advanced options (experts only):
368   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
369   --custom-allocator=NAME  use a supported custom allocator
370   --disable-symver         disable symbol versioning
371   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
372   --disable-safe-bitstream-reader
373                            disable buffer boundary checking in bitreaders
374                            (faster, but may crash)
375   --sws-max-filter-size=N  the max filter size swscale uses [$sws_max_filter_size_default]
376
377 Optimization options (experts only):
378   --disable-asm            disable all assembly optimizations
379   --disable-altivec        disable AltiVec optimizations
380   --disable-vsx            disable VSX optimizations
381   --disable-power8         disable POWER8 optimizations
382   --disable-amd3dnow       disable 3DNow! optimizations
383   --disable-amd3dnowext    disable 3DNow! extended optimizations
384   --disable-mmx            disable MMX optimizations
385   --disable-mmxext         disable MMXEXT optimizations
386   --disable-sse            disable SSE optimizations
387   --disable-sse2           disable SSE2 optimizations
388   --disable-sse3           disable SSE3 optimizations
389   --disable-ssse3          disable SSSE3 optimizations
390   --disable-sse4           disable SSE4 optimizations
391   --disable-sse42          disable SSE4.2 optimizations
392   --disable-avx            disable AVX optimizations
393   --disable-xop            disable XOP optimizations
394   --disable-fma3           disable FMA3 optimizations
395   --disable-fma4           disable FMA4 optimizations
396   --disable-avx2           disable AVX2 optimizations
397   --disable-aesni          disable AESNI optimizations
398   --disable-armv5te        disable armv5te optimizations
399   --disable-armv6          disable armv6 optimizations
400   --disable-armv6t2        disable armv6t2 optimizations
401   --disable-vfp            disable VFP optimizations
402   --disable-neon           disable NEON optimizations
403   --disable-inline-asm     disable use of inline assembly
404   --disable-yasm           disable use of nasm/yasm assembly
405   --disable-mipsdsp        disable MIPS DSP ASE R1 optimizations
406   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
407   --disable-msa            disable MSA optimizations
408   --disable-mipsfpu        disable floating point MIPS optimizations
409   --disable-mmi            disable Loongson SIMD optimizations
410   --disable-fast-unaligned consider unaligned accesses slow
411
412 Developer options (useful when working on FFmpeg itself):
413   --disable-debug          disable debugging symbols
414   --enable-debug=LEVEL     set the debug level [$debuglevel]
415   --disable-optimizations  disable compiler optimizations
416   --enable-extra-warnings  enable more compiler warnings
417   --disable-stripping      disable stripping of executables and shared libraries
418   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
419                            2 causes a slowdown at runtime.
420   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
421   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
422                            leaks and errors, using the specified valgrind binary.
423                            Cannot be combined with --target-exec
424   --enable-ftrapv          Trap arithmetic overflows
425   --samples=PATH           location of test samples for FATE, if not set use
426                            \$FATE_SAMPLES at make invocation time.
427   --enable-neon-clobber-test check NEON registers for clobbering (should be
428                            used only for debugging purposes)
429   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
430                            should be used only for debugging purposes)
431   --enable-random          randomly enable/disable components
432   --disable-random
433   --enable-random=LIST     randomly enable/disable specific components or
434   --disable-random=LIST    component groups. LIST is a comma-separated list
435                            of NAME[:PROB] entries where NAME is a component
436                            (group) and PROB the probability associated with
437                            NAME (default 0.5).
438   --random-seed=VALUE      seed value for --enable/disable-random
439   --disable-valgrind-backtrace do not print a backtrace under Valgrind
440                            (only applies to --disable-optimizations builds)
441   --enable-osfuzz          Enable building fuzzer tool
442   --libfuzzer=PATH         path to libfuzzer
443   --ignore-tests=TESTS     comma-separated list (without "fate-" prefix
444                            in the name) of tests whose result is ignored
445
446 NOTE: Object files are built at the place where configure is launched.
447 EOF
448   exit 0
449 }
450
451 quotes='""'
452 if test -t 1 && which tput >/dev/null 2>&1; then
453     ncolors=$(tput colors)
454     if test -n "$ncolors" && test $ncolors -ge 8; then
455         bold_color=$(tput bold)
456         warn_color=$(tput setaf 3)
457         error_color=$(tput setaf 1)
458         reset_color=$(tput sgr0)
459     fi
460     # 72 used instead of 80 since that's the default of pr
461     ncols=$(tput cols)
462 fi
463 : ${ncols:=72}
464
465 log(){
466     echo "$@" >> $logfile
467 }
468
469 log_file(){
470     log BEGIN $1
471     pr -n -t $1 >> $logfile
472     log END $1
473 }
474
475 warn(){
476     log "WARNING: $*"
477     WARNINGS="${WARNINGS}WARNING: $*\n"
478 }
479
480 die(){
481     log "$@"
482     echo "$error_color$bold_color$@$reset_color"
483     cat <<EOF
484
485 If you think configure made a mistake, make sure you are using the latest
486 version from Git.  If the latest version fails, report the problem to the
487 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
488 EOF
489     if disabled logging; then
490         cat <<EOF
491 Rerun configure with logging enabled (do not use --disable-logging), and
492 include the log this produces with your report.
493 EOF
494     else
495         cat <<EOF
496 Include the log file "$logfile" produced by configure as this will help
497 solve the problem.
498 EOF
499     fi
500     exit 1
501 }
502
503 # Avoid locale weirdness, besides we really just want to translate ASCII.
504 toupper(){
505     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
506 }
507
508 tolower(){
509     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
510 }
511
512 c_escape(){
513     echo "$*" | sed 's/["\\]/\\\0/g'
514 }
515
516 sh_quote(){
517     v=$(echo "$1" | sed "s/'/'\\\\''/g")
518     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
519     echo "$v"
520 }
521
522 cleanws(){
523     echo "$@" | sed 's/^ *//;s/[[:space:]][[:space:]]*/ /g;s/ *$//'
524 }
525
526 filter(){
527     pat=$1
528     shift
529     for v; do
530         eval "case $v in $pat) printf '%s ' $v ;; esac"
531     done
532 }
533
534 filter_out(){
535     pat=$1
536     shift
537     for v; do
538         eval "case $v in $pat) ;; *) printf '%s ' $v ;; esac"
539     done
540 }
541
542 map(){
543     m=$1
544     shift
545     for v; do eval $m; done
546 }
547
548 add_suffix(){
549     suffix=$1
550     shift
551     for v; do echo ${v}${suffix}; done
552 }
553
554 set_all(){
555     value=$1
556     shift
557     for var in $*; do
558         eval $var=$value
559     done
560 }
561
562 set_weak(){
563     value=$1
564     shift
565     for var; do
566         eval : \${$var:=$value}
567     done
568 }
569
570 sanitize_var_name(){
571     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
572 }
573
574 set_safe(){
575     var=$1
576     shift
577     eval $(sanitize_var_name "$var")='$*'
578 }
579
580 get_safe(){
581     eval echo \$$(sanitize_var_name "$1")
582 }
583
584 pushvar(){
585     for pvar in $*; do
586         eval level=\${${pvar}_level:=0}
587         eval ${pvar}_${level}="\$$pvar"
588         eval ${pvar}_level=$(($level+1))
589     done
590 }
591
592 popvar(){
593     for pvar in $*; do
594         eval level=\${${pvar}_level:-0}
595         test $level = 0 && continue
596         eval level=$(($level-1))
597         eval $pvar="\${${pvar}_${level}}"
598         eval ${pvar}_level=$level
599         eval unset ${pvar}_${level}
600     done
601 }
602
603 request(){
604     for var in $*; do
605         eval ${var}_requested=yes
606         eval $var=
607     done
608 }
609
610 enable(){
611     set_all yes $*
612 }
613
614 disable(){
615     set_all no $*
616 }
617
618 enable_weak(){
619     set_weak yes $*
620 }
621
622 disable_weak(){
623     set_weak no $*
624 }
625
626 enable_safe(){
627     for var; do
628         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
629     done
630 }
631
632 disable_safe(){
633     for var; do
634         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
635     done
636 }
637
638 do_enable_deep(){
639     for var; do
640         enabled $var && continue
641         eval sel="\$${var}_select"
642         eval sgs="\$${var}_suggest"
643         pushvar var sgs
644         enable_deep $sel
645         popvar sgs
646         enable_deep_weak $sgs
647         popvar var
648     done
649 }
650
651 enable_deep(){
652     do_enable_deep $*
653     enable $*
654 }
655
656 enable_deep_weak(){
657     for var; do
658         disabled $var && continue
659         pushvar var
660         do_enable_deep $var
661         popvar var
662         enable_weak $var
663     done
664 }
665
666 requested(){
667     test "${1#!}" = "$1" && op='=' || op=!=
668     eval test "x\$${1#!}_requested" $op "xyes"
669 }
670
671 enabled(){
672     test "${1#!}" = "$1" && op='=' || op=!=
673     eval test "x\$${1#!}" $op "xyes"
674 }
675
676 disabled(){
677     test "${1#!}" = "$1" && op='=' || op=!=
678     eval test "x\$${1#!}" $op "xno"
679 }
680
681 enabled_all(){
682     for opt; do
683         enabled $opt || return 1
684     done
685 }
686
687 disabled_all(){
688     for opt; do
689         disabled $opt || return 1
690     done
691 }
692
693 enabled_any(){
694     for opt; do
695         enabled $opt && return 0
696     done
697 }
698
699 disabled_any(){
700     for opt; do
701         disabled $opt && return 0
702     done
703     return 1
704 }
705
706 set_default(){
707     for opt; do
708         eval : \${$opt:=\$${opt}_default}
709     done
710 }
711
712 is_in(){
713     value=$1
714     shift
715     for var in $*; do
716         [ $var = $value ] && return 0
717     done
718     return 1
719 }
720
721 do_check_deps(){
722     for cfg; do
723         cfg="${cfg#!}"
724         enabled ${cfg}_checking && die "Circular dependency for $cfg."
725         disabled ${cfg}_checking && continue
726         enable ${cfg}_checking
727         append allopts $cfg
728
729         eval dep_all="\$${cfg}_deps"
730         eval dep_any="\$${cfg}_deps_any"
731         eval dep_sel="\$${cfg}_select"
732         eval dep_sgs="\$${cfg}_suggest"
733         eval dep_ifa="\$${cfg}_if"
734         eval dep_ifn="\$${cfg}_if_any"
735
736         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
737         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
738         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
739
740         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
741         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
742         enabled_all  $dep_all || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but not all dependencies are satisfied: $dep_all"; }
743         enabled_any  $dep_any || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but not any dependency is satisfied: $dep_any"; }
744         disabled_any $dep_sel && { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but some selected dependency is unsatisfied: $dep_sel"; }
745
746         if enabled $cfg; then
747             enable_deep $dep_sel
748             enable_deep_weak $dep_sgs
749         fi
750
751         disable ${cfg}_checking
752     done
753 }
754
755 check_deps(){
756     unset allopts
757
758     do_check_deps "$@"
759
760     for cfg in $allopts; do
761         enabled $cfg || continue
762         eval dep_extralibs="\$${cfg}_extralibs"
763         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
764     done
765 }
766
767 print_config(){
768     pfx=$1
769     files=$2
770     shift 2
771     map 'eval echo "$v \${$v:-no}"' "$@" |
772     awk "BEGIN { split(\"$files\", files) }
773         {
774             c = \"$pfx\" toupper(\$1);
775             v = \$2;
776             sub(/yes/, 1, v);
777             sub(/no/,  0, v);
778             for (f in files) {
779                 file = files[f];
780                 if (file ~ /\\.h\$/) {
781                     printf(\"#define %s %d\\n\", c, v) >>file;
782                 } else if (file ~ /\\.asm\$/) {
783                     printf(\"%%define %s %d\\n\", c, v) >>file;
784                 } else if (file ~ /\\.mak\$/) {
785                     n = -v ? \"\" : \"!\";
786                     printf(\"%s%s=yes\\n\", n, c) >>file;
787                 } else if (file ~ /\\.texi\$/) {
788                     pre = -v ? \"\" : \"@c \";
789                     yesno = \$2;
790                     c2 = tolower(c);
791                     gsub(/_/, \"-\", c2);
792                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
793                 }
794             }
795         }"
796 }
797
798 print_enabled(){
799     suf=$1
800     shift
801     for v; do
802         enabled $v && printf "%s\n" ${v%$suf}
803     done
804 }
805
806 append(){
807     var=$1
808     shift
809     eval "$var=\"\$$var $*\""
810 }
811
812 prepend(){
813     var=$1
814     shift
815     eval "$var=\"$* \$$var\""
816 }
817
818 unique(){
819     var=$1
820     uniq_list=""
821     for tok in $(eval echo \$$var); do
822         uniq_list="$(filter_out $tok $uniq_list) $tok"
823     done
824     eval "$var=\"${uniq_list}\""
825 }
826
827 add_cppflags(){
828     append CPPFLAGS "$@"
829 }
830
831 add_cflags(){
832     append CFLAGS $($cflags_filter "$@")
833 }
834
835 add_cflags_headers(){
836     append CFLAGS_HEADERS $($cflags_filter "$@")
837 }
838
839 add_cxxflags(){
840     append CXXFLAGS $($cflags_filter "$@")
841 }
842
843 add_asflags(){
844     append ASFLAGS $($asflags_filter "$@")
845 }
846
847 add_objcflags(){
848     append OBJCFLAGS $($objcflags_filter "$@")
849 }
850
851 add_ldflags(){
852     append LDFLAGS $($ldflags_filter "$@")
853 }
854
855 add_ldexeflags(){
856     append LDEXEFLAGS $($ldflags_filter "$@")
857 }
858
859 add_ldlibflags(){
860     append LDLIBFLAGS $($ldflags_filter "$@")
861 }
862
863 add_stripflags(){
864     append ASMSTRIPFLAGS "$@"
865 }
866
867 add_extralibs(){
868     prepend extralibs $($ldflags_filter "$@")
869 }
870
871 add_host_cppflags(){
872     append host_cppflags "$@"
873 }
874
875 add_host_cflags(){
876     append host_cflags $($host_cflags_filter "$@")
877 }
878
879 add_host_ldflags(){
880     append host_ldflags $($host_ldflags_filter "$@")
881 }
882
883 add_compat(){
884     append compat_objs $1
885     shift
886     map 'add_cppflags -D$v' "$@"
887 }
888
889 check_cmd(){
890     log "$@"
891     "$@" >> $logfile 2>&1
892 }
893
894 check_stat(){
895     log check_stat "$@"
896     stat "$1" >> $logfile 2>&1
897 }
898
899 cc_o(){
900     eval printf '%s\\n' $CC_O
901 }
902
903 cc_e(){
904     eval printf '%s\\n' $CC_E
905 }
906
907 check_cc(){
908     log check_cc "$@"
909     cat > $TMPC
910     log_file $TMPC
911     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
912 }
913
914 check_cxx(){
915     log check_cxx "$@"
916     cat > $TMPCPP
917     log_file $TMPCPP
918     check_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
919 }
920
921 check_objcc(){
922     log check_objcc "$@"
923     cat > $TMPM
924     log_file $TMPM
925     check_cmd $objcc -Werror=missing-prototypes $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPM
926 }
927
928 check_cpp(){
929     log check_cpp "$@"
930     cat > $TMPC
931     log_file $TMPC
932     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
933 }
934
935 as_o(){
936     eval printf '%s\\n' $AS_O
937 }
938
939 check_as(){
940     log check_as "$@"
941     cat > $TMPS
942     log_file $TMPS
943     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
944 }
945
946 check_inline_asm(){
947     log check_inline_asm "$@"
948     name="$1"
949     code="$2"
950     shift 2
951     disable $name
952     check_cc "$@" <<EOF && enable $name
953 void foo(void){ __asm__ volatile($code); }
954 EOF
955 }
956
957 check_inline_asm_flags(){
958     log check_inline_asm_flags "$@"
959     name="$1"
960     code="$2"
961     flags=''
962     shift 2
963     while [ "$1" != "" ]; do
964       append flags $1
965       shift
966     done;
967     disable $name
968     cat > $TMPC <<EOF
969 void foo(void){ __asm__ volatile($code); }
970 EOF
971     log_file $TMPC
972     check_cmd $cc $CPPFLAGS $CFLAGS $flags "$@" $CC_C $(cc_o $TMPO) $TMPC &&
973     enable $name && add_cflags $flags && add_asflags $flags && add_ldflags $flags
974 }
975
976 check_insn(){
977     log check_insn "$@"
978     check_inline_asm ${1}_inline "\"$2\""
979     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
980 }
981
982 check_yasm(){
983     log check_yasm "$@"
984     echo "$1" > $TMPS
985     log_file $TMPS
986     shift 1
987     check_cmd $yasmexe $YASMFLAGS -Werror "$@" -o $TMPO $TMPS
988 }
989
990 ld_o(){
991     eval printf '%s\\n' $LD_O
992 }
993
994 check_ld(){
995     log check_ld "$@"
996     type=$1
997     shift 1
998     flags=$(filter_out '-l*|*.so' $@)
999     libs=$(filter '-l*|*.so' $@)
1000     check_$type $($cflags_filter $flags) || return
1001     flags=$($ldflags_filter $flags)
1002     libs=$($ldflags_filter $libs)
1003     check_cmd $ld $LDFLAGS $LDEXEFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
1004 }
1005
1006 print_include(){
1007     hdr=$1
1008     test "${hdr%.h}" = "${hdr}" &&
1009         echo "#include $hdr"    ||
1010         echo "#include <$hdr>"
1011 }
1012
1013 check_code(){
1014     log check_code "$@"
1015     check=$1
1016     headers=$2
1017     code=$3
1018     shift 3
1019     {
1020         for hdr in $headers; do
1021             print_include $hdr
1022         done
1023         echo "int main(void) { $code; return 0; }"
1024     } | check_$check "$@"
1025 }
1026
1027 check_cppflags(){
1028     log check_cppflags "$@"
1029     check_cpp "$@" <<EOF && append CPPFLAGS "$@"
1030 int x;
1031 EOF
1032 }
1033
1034 test_cflags(){
1035     log test_cflags "$@"
1036     set -- $($cflags_filter "$@")
1037     check_cc "$@" <<EOF
1038 int x;
1039 EOF
1040 }
1041
1042 check_cflags(){
1043     log check_cflags "$@"
1044     test_cflags "$@" && add_cflags "$@"
1045 }
1046
1047 check_cxxflags(){
1048     log check_cxxflags "$@"
1049     set -- $($cflags_filter "$@")
1050     check_cxx "$@" <<EOF && append CXXFLAGS "$@"
1051 int x;
1052 EOF
1053 }
1054
1055 test_objcflags(){
1056     log test_objcflags "$@"
1057     set -- $($objcflags_filter "$@")
1058     check_objcc "$@" <<EOF
1059 int x;
1060 EOF
1061 }
1062
1063 check_objcflags(){
1064     log check_objcflags "$@"
1065     test_objcflags "$@" && add_objcflags "$@"
1066 }
1067
1068 test_ldflags(){
1069     log test_ldflags "$@"
1070     check_ld "cc" "$@" <<EOF
1071 int main(void){ return 0; }
1072 EOF
1073 }
1074
1075 check_ldflags(){
1076     log check_ldflags "$@"
1077     test_ldflags "$@" && add_ldflags "$@"
1078 }
1079
1080 test_stripflags(){
1081     log test_stripflags "$@"
1082     # call check_cc to get a fresh TMPO
1083     check_cc <<EOF
1084 int main(void) { return 0; }
1085 EOF
1086     check_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
1087 }
1088
1089 check_stripflags(){
1090     log check_stripflags "$@"
1091     test_stripflags "$@" && add_stripflags "$@"
1092 }
1093
1094 check_header(){
1095     log check_header "$@"
1096     header=$1
1097     shift
1098     disable_safe $header
1099     check_cpp "$@" <<EOF && enable_safe $header
1100 #include <$header>
1101 int x;
1102 EOF
1103 }
1104
1105 check_header_objcc(){
1106     log check_header_objcc "$@"
1107     rm -f -- "$TMPO"
1108     header=$1
1109     shift
1110     disable_safe $header
1111     {
1112        echo "#include <$header>"
1113        echo "int main(void) { return 0; }"
1114     } | check_objcc && check_stat "$TMPO" && enable_safe $headers
1115 }
1116
1117 check_func(){
1118     log check_func "$@"
1119     func=$1
1120     shift
1121     disable $func
1122     check_ld "cc" "$@" <<EOF && enable $func
1123 extern int $func();
1124 int main(void){ $func(); }
1125 EOF
1126 }
1127
1128 check_complexfunc(){
1129     log check_complexfunc "$@"
1130     func=$1
1131     narg=$2
1132     shift 2
1133     test $narg = 2 && args="f, g" || args="f * I"
1134     disable $func
1135     check_ld "cc" "$@" <<EOF && enable $func
1136 #include <complex.h>
1137 #include <math.h>
1138 float foo(complex float f, complex float g) { return $func($args); }
1139 int main(void){ return (int) foo; }
1140 EOF
1141 }
1142
1143 check_mathfunc(){
1144     log check_mathfunc "$@"
1145     func=$1
1146     narg=$2
1147     shift 2
1148     test $narg = 2 && args="f, g" || args="f"
1149     disable $func
1150     check_ld "cc" "$@" <<EOF && enable $func
1151 #include <math.h>
1152 float foo(float f, float g) { return $func($args); }
1153 int main(void){ return (int) foo; }
1154 EOF
1155 }
1156
1157 check_func_headers(){
1158     log check_func_headers "$@"
1159     headers=$1
1160     funcs=$2
1161     shift 2
1162     {
1163         for hdr in $headers; do
1164             print_include $hdr
1165         done
1166         echo "#include <stdint.h>"
1167         for func in $funcs; do
1168             echo "long check_$func(void) { return (long) $func; }"
1169         done
1170         echo "int main(void) { int ret = 0;"
1171         # LTO could optimize out the test functions without this
1172         for func in $funcs; do
1173             echo " ret |= ((intptr_t)check_$func) & 0xFFFF;"
1174         done
1175         echo "return ret; }"
1176     } | check_ld "cc" "$@" && enable $funcs && enable_safe $headers
1177 }
1178
1179 check_class_headers_cpp(){
1180     log check_class_headers_cpp "$@"
1181     headers=$1
1182     classes=$2
1183     shift 2
1184     {
1185         for hdr in $headers; do
1186             echo "#include <$hdr>"
1187         done
1188         echo "int main(void) { "
1189         i=1
1190         for class in $classes; do
1191             echo "$class obj$i;"
1192             i=$(expr $i + 1)
1193         done
1194         echo "return 0; }"
1195     } | check_ld "cxx" "$@" && enable $funcs && enable_safe $headers
1196 }
1197
1198 check_cpp_condition(){
1199     log check_cpp_condition "$@"
1200     header=$1
1201     condition=$2
1202     shift 2
1203     check_cpp "$@" <<EOF
1204 #include <$header>
1205 #if !($condition)
1206 #error "unsatisfied condition: $condition"
1207 #endif
1208 EOF
1209 }
1210
1211 test_cflags_cc(){
1212     log test_cflags_cc "$@"
1213     flags=$1
1214     header=$2
1215     condition=$3
1216     shift 3
1217     set -- $($cflags_filter "$flags")
1218     check_cc "$@" <<EOF
1219 #include <$header>
1220 #if !($condition)
1221 #error "unsatisfied condition: $condition"
1222 #endif
1223 EOF
1224 }
1225
1226 check_lib(){
1227     log check_lib "$@"
1228     name="$1"
1229     headers="$2"
1230     funcs="$3"
1231     shift 3
1232     disable $name
1233     check_func_headers "$headers" "$funcs" "$@" &&
1234         enable $name && add_extralibs "$@"
1235 }
1236
1237 check_lib_cpp(){
1238     log check_lib_cpp "$@"
1239     headers="$1"
1240     classes="$2"
1241     shift 2
1242     check_class_headers_cpp "$headers" "$classes" "$@" && add_extralibs "$@"
1243 }
1244
1245 check_pkg_config(){
1246     log check_pkg_config "$@"
1247     pkg_version="$1"
1248     pkg="${1%% *}"
1249     headers="$2"
1250     funcs="$3"
1251     shift 3
1252     check_cmd $pkg_config --exists --print-errors $pkg_version || return
1253     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1254     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1255     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1256         set_safe "${pkg}_cflags"    $pkg_cflags &&
1257         set_safe "${pkg}_extralibs" $pkg_libs
1258 }
1259
1260 check_exec(){
1261     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1262 }
1263
1264 check_exec_crash(){
1265     log check_exec_crash "$@"
1266     code=$(cat)
1267
1268     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1269     # are safe but may not be available everywhere.  Thus we use
1270     # raise(SIGTERM) instead.  The check is run in a subshell so we
1271     # can redirect the "Terminated" message from the shell.  SIGBUS
1272     # is not defined by standard C so it is used conditionally.
1273
1274     (check_exec "$@") >> $logfile 2>&1 <<EOF
1275 #include <signal.h>
1276 static void sighandler(int sig){
1277     raise(SIGTERM);
1278 }
1279 int foo(void){
1280     $code
1281 }
1282 int (*func_ptr)(void) = foo;
1283 int main(void){
1284     signal(SIGILL, sighandler);
1285     signal(SIGFPE, sighandler);
1286     signal(SIGSEGV, sighandler);
1287 #ifdef SIGBUS
1288     signal(SIGBUS, sighandler);
1289 #endif
1290     return func_ptr();
1291 }
1292 EOF
1293 }
1294
1295 check_type(){
1296     log check_type "$@"
1297     headers=$1
1298     type=$2
1299     shift 2
1300     disable_safe "$type"
1301     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1302 }
1303
1304 check_struct(){
1305     log check_struct "$@"
1306     headers=$1
1307     struct=$2
1308     member=$3
1309     shift 3
1310     disable_safe "${struct}_${member}"
1311     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1312         enable_safe "${struct}_${member}"
1313 }
1314
1315 check_builtin(){
1316     log check_builtin "$@"
1317     name=$1
1318     headers=$2
1319     builtin=$3
1320     shift 3
1321     disable "$name"
1322     check_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1323 }
1324
1325 check_compile_assert(){
1326     log check_compile_assert "$@"
1327     name=$1
1328     headers=$2
1329     condition=$3
1330     shift 3
1331     disable "$name"
1332     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1333 }
1334
1335 require(){
1336     log require "$@"
1337     name_version="$1"
1338     name="${1%% *}"
1339     headers="$2"
1340     func="$3"
1341     shift 3
1342     check_lib $name "$headers" $func "$@" || die "ERROR: $name_version not found"
1343 }
1344
1345 require_cpp(){
1346     name="$1"
1347     headers="$2"
1348     classes="$3"
1349     shift 3
1350     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1351 }
1352
1353 use_pkg_config(){
1354     log use_pkg_config "$@"
1355     pkg="$1"
1356     check_pkg_config "$@" || return 1
1357     add_cflags    $(get_safe "${pkg}_cflags")
1358     add_extralibs $(get_safe "${pkg}_extralibs")
1359 }
1360
1361 require_pkg_config(){
1362     use_pkg_config "$@" || die "ERROR: $pkg not found using pkg-config$pkg_config_fail_message"
1363 }
1364
1365 hostcc_e(){
1366     eval printf '%s\\n' $HOSTCC_E
1367 }
1368
1369 hostcc_o(){
1370     eval printf '%s\\n' $HOSTCC_O
1371 }
1372
1373 check_host_cc(){
1374     log check_host_cc "$@"
1375     cat > $TMPC
1376     log_file $TMPC
1377     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1378 }
1379
1380 check_host_cpp(){
1381     log check_host_cpp "$@"
1382     cat > $TMPC
1383     log_file $TMPC
1384     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1385 }
1386
1387 check_host_cppflags(){
1388     log check_host_cppflags "$@"
1389     check_host_cpp "$@" <<EOF && append host_cppflags "$@"
1390 int x;
1391 EOF
1392 }
1393
1394 check_host_cflags(){
1395     log check_host_cflags "$@"
1396     set -- $($host_cflags_filter "$@")
1397     check_host_cc "$@" <<EOF && append host_cflags "$@"
1398 int x;
1399 EOF
1400 }
1401
1402 check_host_cpp_condition(){
1403     log check_host_cpp_condition "$@"
1404     header=$1
1405     condition=$2
1406     shift 2
1407     check_host_cpp "$@" <<EOF
1408 #include <$header>
1409 #if !($condition)
1410 #error "unsatisfied condition: $condition"
1411 #endif
1412 EOF
1413 }
1414
1415 cp_if_changed(){
1416     cmp -s "$1" "$2" && { test "$quiet" != "yes" && echo "$2 is unchanged"; } && return
1417     mkdir -p "$(dirname $2)"
1418     cp -f "$1" "$2"
1419 }
1420
1421 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1422 # system-dependent things.
1423
1424 AVCODEC_COMPONENTS="
1425     bsfs
1426     decoders
1427     encoders
1428     hwaccels
1429     parsers
1430 "
1431
1432 AVDEVICE_COMPONENTS="
1433     indevs
1434     outdevs
1435 "
1436 AVFILTER_COMPONENTS="
1437     filters
1438 "
1439 AVFORMAT_COMPONENTS="
1440     demuxers
1441     muxers
1442     protocols
1443 "
1444
1445 AVRESAMPLE_COMPONENTS=""
1446 AVUTIL_COMPONENTS=""
1447
1448 COMPONENT_LIST="
1449     $AVCODEC_COMPONENTS
1450     $AVDEVICE_COMPONENTS
1451     $AVFILTER_COMPONENTS
1452     $AVFORMAT_COMPONENTS
1453     $AVRESAMPLE_COMPONENTS
1454     $AVUTIL_COMPONENTS
1455 "
1456
1457 EXAMPLE_LIST="
1458     avio_dir_cmd_example
1459     avio_reading_example
1460     decode_audio_example
1461     decode_video_example
1462     demuxing_decoding_example
1463     encode_audio_example
1464     encode_video_example
1465     extract_mvs_example
1466     filter_audio_example
1467     filtering_audio_example
1468     filtering_video_example
1469     http_multiclient_example
1470     metadata_example
1471     muxing_example
1472     qsvdec_example
1473     remuxing_example
1474     resampling_audio_example
1475     scaling_video_example
1476     transcode_aac_example
1477     transcoding_example
1478 "
1479 EXTERNAL_AUTODETECT_LIBRARY_LIST="
1480     bzlib
1481     iconv
1482     libxcb
1483     libxcb_shm
1484     libxcb_shape
1485     libxcb_xfixes
1486     lzma
1487     schannel
1488     sdl
1489     sdl2
1490     securetransport
1491     xlib
1492     zlib
1493 "
1494
1495 EXTERNAL_LIBRARY_GPL_LIST="
1496     avisynth
1497     frei0r
1498     libcdio
1499     librubberband
1500     libvidstab
1501     libx264
1502     libx265
1503     libxavs
1504     libxvid
1505 "
1506
1507 EXTERNAL_LIBRARY_NONFREE_LIST="
1508     decklink
1509     libfdk_aac
1510     openssl
1511 "
1512
1513 EXTERNAL_LIBRARY_VERSION3_LIST="
1514     gmp
1515     libopencore_amrnb
1516     libopencore_amrwb
1517     libvo_amrwbenc
1518 "
1519
1520 EXTERNAL_LIBRARY_GPLV3_LIST="
1521     libsmbclient
1522 "
1523
1524 EXTERNAL_LIBRARY_LIST="
1525     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1526     $EXTERNAL_LIBRARY_GPL_LIST
1527     $EXTERNAL_LIBRARY_NONFREE_LIST
1528     $EXTERNAL_LIBRARY_VERSION3_LIST
1529     $EXTERNAL_LIBRARY_GPLV3_LIST
1530     chromaprint
1531     crystalhd
1532     gcrypt
1533     gnutls
1534     jni
1535     ladspa
1536     libass
1537     libbluray
1538     libbs2b
1539     libcaca
1540     libcelt
1541     libdc1394
1542     libflite
1543     libfontconfig
1544     libfreetype
1545     libfribidi
1546     libgme
1547     libgsm
1548     libiec61883
1549     libilbc
1550     libkvazaar
1551     libmodplug
1552     libmp3lame
1553     libopencv
1554     libopenh264
1555     libopenjpeg
1556     libopenmpt
1557     libopus
1558     libpulse
1559     librsvg
1560     librtmp
1561     libshine
1562     libsmbclient
1563     libsnappy
1564     libsoxr
1565     libspeex
1566     libssh
1567     libtesseract
1568     libtheora
1569     libtwolame
1570     libv4l2
1571     libvorbis
1572     libvpx
1573     libwavpack
1574     libwebp
1575     libzimg
1576     libzmq
1577     libzvbi
1578     mediacodec
1579     netcdf
1580     openal
1581     opencl
1582     opengl
1583     videotoolbox
1584 "
1585 HWACCEL_AUTODETECT_LIBRARY_LIST="
1586     audiotoolbox
1587     cuda
1588     cuvid
1589     d3d11va
1590     dxva2
1591     nvenc
1592     vaapi
1593     vda
1594     vdpau
1595     videotoolbox_hwaccel
1596     xvmc
1597 "
1598
1599 HWACCEL_LIBRARY_NONFREE_LIST="
1600     cuda_sdk
1601     libnpp
1602 "
1603
1604 HWACCEL_LIBRARY_LIST="
1605     $HWACCEL_AUTODETECT_LIBRARY_LIST
1606     $HWACCEL_LIBRARY_NONFREE_LIST
1607     libmfx
1608     mmal
1609     omx
1610 "
1611
1612 DOCUMENT_LIST="
1613     doc
1614     htmlpages
1615     manpages
1616     podpages
1617     txtpages
1618 "
1619
1620 FEATURE_LIST="
1621     ftrapv
1622     gray
1623     hardcoded_tables
1624     omx_rpi
1625     runtime_cpudetect
1626     safe_bitstream_reader
1627     shared
1628     small
1629     static
1630     swscale_alpha
1631 "
1632
1633 LIBRARY_LIST="
1634     avcodec
1635     avdevice
1636     avfilter
1637     avformat
1638     avresample
1639     avutil
1640     postproc
1641     swresample
1642     swscale
1643 "
1644
1645 LICENSE_LIST="
1646     gpl
1647     nonfree
1648     version3
1649 "
1650
1651 PROGRAM_LIST="
1652     ffplay
1653     ffprobe
1654     ffserver
1655     ffmpeg
1656 "
1657
1658 SUBSYSTEM_LIST="
1659     dct
1660     dwt
1661     error_resilience
1662     faan
1663     fast_unaligned
1664     fft
1665     lsp
1666     lzo
1667     mdct
1668     pixelutils
1669     network
1670     rdft
1671 "
1672
1673 # COMPONENT_LIST needs to come last to ensure correct dependency checking
1674 CONFIG_LIST="
1675     $DOCUMENT_LIST
1676     $EXAMPLE_LIST
1677     $EXTERNAL_LIBRARY_LIST
1678     $HWACCEL_LIBRARY_LIST
1679     $FEATURE_LIST
1680     $LICENSE_LIST
1681     $LIBRARY_LIST
1682     $PROGRAM_LIST
1683     $SUBSYSTEM_LIST
1684     fontconfig
1685     memory_poisoning
1686     neon_clobber_test
1687     ossfuzz
1688     pic
1689     thumb
1690     valgrind_backtrace
1691     xmm_clobber_test
1692     $COMPONENT_LIST
1693 "
1694
1695 THREADS_LIST="
1696     pthreads
1697     os2threads
1698     w32threads
1699 "
1700
1701 ATOMICS_LIST="
1702     atomics_gcc
1703     atomics_suncc
1704     atomics_win32
1705 "
1706
1707 AUTODETECT_LIBS="
1708     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1709     $HWACCEL_AUTODETECT_LIBRARY_LIST
1710     $THREADS_LIST
1711 "
1712
1713 ARCH_LIST="
1714     aarch64
1715     alpha
1716     arm
1717     avr32
1718     avr32_ap
1719     avr32_uc
1720     bfin
1721     ia64
1722     m68k
1723     mips
1724     mips64
1725     parisc
1726     ppc
1727     ppc64
1728     s390
1729     sh4
1730     sparc
1731     sparc64
1732     tilegx
1733     tilepro
1734     tomi
1735     x86
1736     x86_32
1737     x86_64
1738 "
1739
1740 ARCH_EXT_LIST_ARM="
1741     armv5te
1742     armv6
1743     armv6t2
1744     armv8
1745     neon
1746     vfp
1747     vfpv3
1748     setend
1749 "
1750
1751 ARCH_EXT_LIST_MIPS="
1752     mipsfpu
1753     mips32r2
1754     mips32r5
1755     mips64r2
1756     mips32r6
1757     mips64r6
1758     mipsdsp
1759     mipsdspr2
1760     msa
1761 "
1762
1763 ARCH_EXT_LIST_LOONGSON="
1764     loongson2
1765     loongson3
1766     mmi
1767 "
1768
1769 ARCH_EXT_LIST_X86_SIMD="
1770     aesni
1771     amd3dnow
1772     amd3dnowext
1773     avx
1774     avx2
1775     fma3
1776     fma4
1777     mmx
1778     mmxext
1779     sse
1780     sse2
1781     sse3
1782     sse4
1783     sse42
1784     ssse3
1785     xop
1786 "
1787
1788 ARCH_EXT_LIST_PPC="
1789     altivec
1790     dcbzl
1791     ldbrx
1792     power8
1793     ppc4xx
1794     vsx
1795 "
1796
1797 ARCH_EXT_LIST_X86="
1798     $ARCH_EXT_LIST_X86_SIMD
1799     cpunop
1800     i686
1801 "
1802
1803 ARCH_EXT_LIST="
1804     $ARCH_EXT_LIST_ARM
1805     $ARCH_EXT_LIST_PPC
1806     $ARCH_EXT_LIST_X86
1807     $ARCH_EXT_LIST_MIPS
1808     $ARCH_EXT_LIST_LOONGSON
1809 "
1810
1811 ARCH_FEATURES="
1812     aligned_stack
1813     fast_64bit
1814     fast_clz
1815     fast_cmov
1816     local_aligned_8
1817     local_aligned_16
1818     local_aligned_32
1819     simd_align_16
1820     simd_align_32
1821 "
1822
1823 BUILTIN_LIST="
1824     atomic_cas_ptr
1825     machine_rw_barrier
1826     MemoryBarrier
1827     mm_empty
1828     rdtsc
1829     sarestart
1830     sem_timedwait
1831     sync_val_compare_and_swap
1832 "
1833 HAVE_LIST_CMDLINE="
1834     inline_asm
1835     symver
1836     yasm
1837 "
1838
1839 HAVE_LIST_PUB="
1840     bigendian
1841     fast_unaligned
1842 "
1843
1844 HEADERS_LIST="
1845     alsa_asoundlib_h
1846     altivec_h
1847     arpa_inet_h
1848     asm_types_h
1849     cdio_paranoia_h
1850     cdio_paranoia_paranoia_h
1851     cuda_h
1852     d3d11_h
1853     dispatch_dispatch_h
1854     dev_bktr_ioctl_bt848_h
1855     dev_bktr_ioctl_meteor_h
1856     dev_ic_bt8xx_h
1857     dev_video_bktr_ioctl_bt848_h
1858     dev_video_meteor_ioctl_meteor_h
1859     direct_h
1860     dirent_h
1861     dlfcn_h
1862     dxva_h
1863     ES2_gl_h
1864     gsm_h
1865     io_h
1866     mach_mach_time_h
1867     machine_ioctl_bt848_h
1868     machine_ioctl_meteor_h
1869     malloc_h
1870     opencv2_core_core_c_h
1871     openjpeg_2_1_openjpeg_h
1872     openjpeg_2_0_openjpeg_h
1873     openjpeg_1_5_openjpeg_h
1874     OpenGL_gl3_h
1875     poll_h
1876     sndio_h
1877     soundcard_h
1878     stdatomic_h
1879     sys_mman_h
1880     sys_param_h
1881     sys_resource_h
1882     sys_select_h
1883     sys_soundcard_h
1884     sys_time_h
1885     sys_un_h
1886     sys_videoio_h
1887     termios_h
1888     udplite_h
1889     unistd_h
1890     valgrind_valgrind_h
1891     windows_h
1892     winsock2_h
1893 "
1894
1895 INTRINSICS_LIST="
1896     intrinsics_neon
1897 "
1898
1899 COMPLEX_FUNCS="
1900     cabs
1901     cexp
1902 "
1903
1904 MATH_FUNCS="
1905     atanf
1906     atan2f
1907     cbrt
1908     cbrtf
1909     copysign
1910     cosf
1911     erf
1912     exp2
1913     exp2f
1914     expf
1915     hypot
1916     isfinite
1917     isinf
1918     isnan
1919     ldexpf
1920     llrint
1921     llrintf
1922     log2
1923     log2f
1924     log10f
1925     lrint
1926     lrintf
1927     powf
1928     rint
1929     round
1930     roundf
1931     sinf
1932     trunc
1933     truncf
1934 "
1935
1936 SYSTEM_FUNCS="
1937     access
1938     aligned_malloc
1939     arc4random
1940     clock_gettime
1941     closesocket
1942     CommandLineToArgvW
1943     CoTaskMemFree
1944     CryptGenRandom
1945     dlopen
1946     fcntl
1947     flt_lim
1948     fork
1949     getaddrinfo
1950     gethrtime
1951     getopt
1952     GetProcessAffinityMask
1953     GetProcessMemoryInfo
1954     GetProcessTimes
1955     getrusage
1956     GetSystemTimeAsFileTime
1957     gettimeofday
1958     glob
1959     glXGetProcAddress
1960     gmtime_r
1961     inet_aton
1962     isatty
1963     jack_port_get_latency_range
1964     kbhit
1965     LoadLibrary
1966     localtime_r
1967     lstat
1968     lzo1x_999_compress
1969     mach_absolute_time
1970     MapViewOfFile
1971     memalign
1972     mkstemp
1973     mmap
1974     mprotect
1975     nanosleep
1976     PeekNamedPipe
1977     posix_memalign
1978     pthread_cancel
1979     sched_getaffinity
1980     SetConsoleTextAttribute
1981     SetConsoleCtrlHandler
1982     setmode
1983     setrlimit
1984     Sleep
1985     strerror_r
1986     sysconf
1987     sysctl
1988     usleep
1989     UTGetOSTypeFromString
1990     VirtualAlloc
1991     wglGetProcAddress
1992 "
1993
1994 TOOLCHAIN_FEATURES="
1995     as_dn_directive
1996     as_fpu_directive
1997     as_func
1998     as_object_arch
1999     asm_mod_q
2000     attribute_may_alias
2001     attribute_packed
2002     blocks_extension
2003     ebp_available
2004     ebx_available
2005     gnu_as
2006     gnu_windres
2007     ibm_asm
2008     inline_asm_direct_symbol_refs
2009     inline_asm_labels
2010     inline_asm_nonlocal_labels
2011     pragma_deprecated
2012     rsync_contimeout
2013     symver_asm_label
2014     symver_gnu_asm
2015     vfp_args
2016     xform_asm
2017     xmm_clobbers
2018 "
2019
2020 TYPES_LIST="
2021     CONDITION_VARIABLE_Ptr
2022     socklen_t
2023     struct_addrinfo
2024     struct_group_source_req
2025     struct_ip_mreq_source
2026     struct_ipv6_mreq
2027     struct_msghdr_msg_flags
2028     struct_pollfd
2029     struct_rusage_ru_maxrss
2030     struct_sctp_event_subscribe
2031     struct_sockaddr_in6
2032     struct_sockaddr_sa_len
2033     struct_sockaddr_storage
2034     struct_stat_st_mtim_tv_nsec
2035     struct_v4l2_frmivalenum_discrete
2036 "
2037
2038 HAVE_LIST="
2039     $ARCH_EXT_LIST
2040     $(add_suffix _external $ARCH_EXT_LIST)
2041     $(add_suffix _inline   $ARCH_EXT_LIST)
2042     $ARCH_FEATURES
2043     $ATOMICS_LIST
2044     $BUILTIN_LIST
2045     $COMPLEX_FUNCS
2046     $HAVE_LIST_CMDLINE
2047     $HAVE_LIST_PUB
2048     $HEADERS_LIST
2049     $INTRINSICS_LIST
2050     $MATH_FUNCS
2051     $SYSTEM_FUNCS
2052     $THREADS_LIST
2053     $TOOLCHAIN_FEATURES
2054     $TYPES_LIST
2055     alsa
2056     atomics_native
2057     dos_paths
2058     dxva2_lib
2059     dxva2api_cobj
2060     jack
2061     libc_msvcrt
2062     makeinfo
2063     makeinfo_html
2064     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
2065     perl
2066     pod2man
2067     sdl2
2068     section_data_rel_ro
2069     sndio
2070     texi2html
2071     threads
2072     vaapi_drm
2073     vaapi_x11
2074     vdpau_x11
2075     winrt
2076 "
2077
2078 # options emitted with CONFIG_ prefix but not available on the command line
2079 CONFIG_EXTRA="
2080     aandcttables
2081     ac3dsp
2082     audio_frame_queue
2083     audiodsp
2084     blockdsp
2085     bswapdsp
2086     cabac
2087     dirac_parse
2088     dvprofile
2089     exif
2090     faandct
2091     faanidct
2092     fdctdsp
2093     flacdsp
2094     fmtconvert
2095     frame_thread_encoder
2096     g722dsp
2097     golomb
2098     gplv3
2099     h263dsp
2100     h264chroma
2101     h264dsp
2102     h264parse
2103     h264pred
2104     h264qpel
2105     hevcparse
2106     hpeldsp
2107     huffman
2108     huffyuvdsp
2109     huffyuvencdsp
2110     idctdsp
2111     iirfilter
2112     mdct15
2113     intrax8
2114     iso_media
2115     ividsp
2116     jpegtables
2117     lgplv3
2118     libx262
2119     llauddsp
2120     llviddsp
2121     llvidencdsp
2122     lpc
2123     lzf
2124     me_cmp
2125     mpeg_er
2126     mpegaudio
2127     mpegaudiodsp
2128     mpegaudioheader
2129     mpegvideo
2130     mpegvideoenc
2131     mss34dsp
2132     pixblockdsp
2133     qpeldsp
2134     qsv
2135     qsvdec
2136     qsvenc
2137     rangecoder
2138     riffdec
2139     riffenc
2140     rtpdec
2141     rtpenc_chain
2142     rv34dsp
2143     sinewin
2144     snappy
2145     srtp
2146     startcode
2147     texturedsp
2148     texturedspenc
2149     tpeldsp
2150     vaapi_encode
2151     vc1dsp
2152     videodsp
2153     vp3dsp
2154     vp56dsp
2155     vp8dsp
2156     vt_bt2020
2157     wma_freqs
2158     wmv2dsp
2159 "
2160
2161 CMDLINE_SELECT="
2162     $ARCH_EXT_LIST
2163     $CONFIG_LIST
2164     $HAVE_LIST_CMDLINE
2165     $THREADS_LIST
2166     asm
2167     cross_compile
2168     debug
2169     extra_warnings
2170     logging
2171     lto
2172     optimizations
2173     rpath
2174     stripping
2175 "
2176
2177 PATHS_LIST="
2178     bindir
2179     datadir
2180     docdir
2181     incdir
2182     libdir
2183     mandir
2184     pkgconfigdir
2185     prefix
2186     shlibdir
2187     install_name_dir
2188 "
2189
2190 CMDLINE_SET="
2191     $PATHS_LIST
2192     ar
2193     arch
2194     as
2195     assert_level
2196     build_suffix
2197     cc
2198     objcc
2199     cpu
2200     cross_prefix
2201     custom_allocator
2202     cxx
2203     dep_cc
2204     doxygen
2205     env
2206     extra_version
2207     gas
2208     host_cc
2209     host_cflags
2210     host_extralibs
2211     host_ld
2212     host_ldflags
2213     host_os
2214     ignore_tests
2215     install
2216     ld
2217     ln_s
2218     logfile
2219     malloc_prefix
2220     nm
2221     optflags
2222     nvccflags
2223     pkg_config
2224     pkg_config_flags
2225     progs_suffix
2226     random_seed
2227     ranlib
2228     samples
2229     strip
2230     sws_max_filter_size
2231     sysinclude
2232     sysroot
2233     target_exec
2234     target_os
2235     target_path
2236     target_samples
2237     tempprefix
2238     toolchain
2239     valgrind
2240     yasmexe
2241 "
2242
2243 CMDLINE_APPEND="
2244     extra_cflags
2245     extra_cxxflags
2246     extra_objcflags
2247     host_cppflags
2248 "
2249
2250 # code dependency declarations
2251
2252 # architecture extensions
2253
2254 armv5te_deps="arm"
2255 armv6_deps="arm"
2256 armv6t2_deps="arm"
2257 armv8_deps="aarch64"
2258 neon_deps_any="aarch64 arm"
2259 intrinsics_neon_deps="neon"
2260 vfp_deps_any="aarch64 arm"
2261 vfpv3_deps="vfp"
2262 setend_deps="arm"
2263
2264 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2265
2266 loongson2_deps="mips"
2267 loongson3_deps="mips"
2268 mipsfpu_deps="mips"
2269 mipsdsp_deps="mips"
2270 mipsdspr2_deps="mips"
2271 mips32r2_deps="mips"
2272 mips32r5_deps="mips"
2273 mips32r6_deps="mips"
2274 mips64r2_deps="mips"
2275 mips64r6_deps="mips"
2276 msa_deps="mipsfpu"
2277 mmi_deps="mips"
2278
2279 altivec_deps="ppc"
2280 dcbzl_deps="ppc"
2281 ldbrx_deps="ppc"
2282 ppc4xx_deps="ppc"
2283 vsx_deps="altivec"
2284 power8_deps="vsx"
2285
2286 cpunop_deps="i686"
2287 x86_64_select="i686"
2288 x86_64_suggest="fast_cmov"
2289
2290 amd3dnow_deps="mmx"
2291 amd3dnowext_deps="amd3dnow"
2292 i686_deps="x86"
2293 mmx_deps="x86"
2294 mmxext_deps="mmx"
2295 sse_deps="mmxext"
2296 sse2_deps="sse"
2297 sse3_deps="sse2"
2298 ssse3_deps="sse3"
2299 sse4_deps="ssse3"
2300 sse42_deps="sse4"
2301 aesni_deps="sse42"
2302 avx_deps="sse42"
2303 xop_deps="avx"
2304 fma3_deps="avx"
2305 fma4_deps="avx"
2306 avx2_deps="avx"
2307
2308 mmx_external_deps="yasm"
2309 mmx_inline_deps="inline_asm"
2310 mmx_suggest="mmx_external mmx_inline"
2311
2312 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2313     eval dep=\$${ext}_deps
2314     eval ${ext}_external_deps='"${dep}_external"'
2315     eval ${ext}_inline_deps='"${dep}_inline"'
2316     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2317 done
2318
2319 aligned_stack_if_any="aarch64 ppc x86"
2320 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2321 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2322 fast_unaligned_if_any="aarch64 ppc x86"
2323 simd_align_16_if_any="altivec neon sse"
2324 simd_align_32_if_any="avx"
2325
2326 # system capabilities
2327 symver_if_any="symver_asm_label symver_gnu_asm"
2328 valgrind_backtrace_deps="!optimizations valgrind_valgrind_h"
2329
2330 # threading support
2331 atomics_gcc_if="sync_val_compare_and_swap"
2332 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2333 atomics_win32_if="MemoryBarrier"
2334 atomics_native_if_any="$ATOMICS_LIST"
2335 w32threads_deps="atomics_native"
2336 threads_if_any="$THREADS_LIST"
2337
2338 # subsystems
2339 dct_select="rdft"
2340 dirac_parse_select="golomb"
2341 error_resilience_select="me_cmp"
2342 faandct_deps="faan fdctdsp"
2343 faanidct_deps="faan idctdsp"
2344 h264dsp_select="startcode"
2345 hevcparse_select="golomb"
2346 frame_thread_encoder_deps="encoders threads"
2347 intrax8_select="blockdsp idctdsp"
2348 mdct_select="fft"
2349 mdct15_select="fft"
2350 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2351 mpeg_er_select="error_resilience"
2352 mpegaudio_select="mpegaudiodsp mpegaudioheader"
2353 mpegaudiodsp_select="dct"
2354 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2355 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
2356 vc1dsp_select="h264chroma qpeldsp startcode"
2357 rdft_select="fft"
2358
2359 # decoders / encoders
2360 aac_decoder_select="mdct15 mdct sinewin"
2361 aac_fixed_decoder_select="mdct sinewin"
2362 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2363 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2364 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2365 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2366 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2367 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2368 adpcm_g722_decoder_select="g722dsp"
2369 adpcm_g722_encoder_select="g722dsp"
2370 aic_decoder_select="golomb idctdsp"
2371 alac_encoder_select="lpc"
2372 als_decoder_select="bswapdsp"
2373 amrnb_decoder_select="lsp"
2374 amrwb_decoder_select="lsp"
2375 amv_decoder_select="sp5x_decoder exif"
2376 amv_encoder_select="aandcttables jpegtables mpegvideoenc"
2377 ape_decoder_select="bswapdsp llauddsp"
2378 apng_decoder_select="zlib"
2379 apng_encoder_select="llvidencdsp zlib"
2380 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2381 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2382 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2383 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2384 atrac1_decoder_select="mdct sinewin"
2385 atrac3_decoder_select="mdct"
2386 atrac3p_decoder_select="mdct sinewin"
2387 avrn_decoder_select="exif jpegtables"
2388 bink_decoder_select="blockdsp hpeldsp"
2389 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2390 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2391 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2392 cllc_decoder_select="bswapdsp"
2393 comfortnoise_encoder_select="lpc"
2394 cook_decoder_select="audiodsp mdct sinewin"
2395 cscd_decoder_select="lzo"
2396 cscd_decoder_suggest="zlib"
2397 dca_decoder_select="mdct"
2398 dds_decoder_select="texturedsp"
2399 dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
2400 dnxhd_decoder_select="blockdsp idctdsp"
2401 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2402 dvvideo_decoder_select="dvprofile idctdsp"
2403 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2404 dxa_decoder_select="zlib"
2405 dxv_decoder_select="lzf texturedsp"
2406 eac3_decoder_select="ac3_decoder"
2407 eac3_encoder_select="ac3_encoder"
2408 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2409 eatgq_decoder_select="aandcttables"
2410 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2411 exr_decoder_select="zlib"
2412 ffv1_decoder_select="rangecoder"
2413 ffv1_encoder_select="rangecoder"
2414 ffvhuff_decoder_select="huffyuv_decoder"
2415 ffvhuff_encoder_select="huffyuv_encoder"
2416 fic_decoder_select="golomb"
2417 flac_decoder_select="flacdsp"
2418 flac_encoder_select="bswapdsp flacdsp lpc"
2419 flashsv2_decoder_select="zlib"
2420 flashsv2_encoder_select="zlib"
2421 flashsv_decoder_select="zlib"
2422 flashsv_encoder_select="zlib"
2423 flv_decoder_select="h263_decoder"
2424 flv_encoder_select="h263_encoder"
2425 fourxm_decoder_select="blockdsp bswapdsp"
2426 fraps_decoder_select="bswapdsp huffman"
2427 g2m_decoder_select="blockdsp idctdsp jpegtables zlib"
2428 g729_decoder_select="audiodsp"
2429 h261_decoder_select="mpegvideo"
2430 h261_encoder_select="aandcttables mpegvideoenc"
2431 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2432 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2433 h263i_decoder_select="h263_decoder"
2434 h263p_decoder_select="h263_decoder"
2435 h263p_encoder_select="h263_encoder"
2436 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
2437 h264_decoder_suggest="error_resilience"
2438 hap_decoder_select="snappy texturedsp"
2439 hap_encoder_deps="libsnappy"
2440 hap_encoder_select="texturedspenc"
2441 hevc_decoder_select="bswapdsp cabac golomb hevcparse videodsp"
2442 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2443 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llvidencdsp"
2444 iac_decoder_select="imc_decoder"
2445 imc_decoder_select="bswapdsp fft mdct sinewin"
2446 indeo3_decoder_select="hpeldsp"
2447 indeo4_decoder_select="ividsp"
2448 indeo5_decoder_select="ividsp"
2449 interplay_video_decoder_select="hpeldsp"
2450 jpegls_decoder_select="mjpeg_decoder"
2451 jv_decoder_select="blockdsp"
2452 lagarith_decoder_select="llviddsp"
2453 ljpeg_encoder_select="aandcttables idctdsp jpegtables mpegvideoenc"
2454 magicyuv_decoder_select="llviddsp"
2455 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2456 metasound_decoder_select="lsp mdct sinewin"
2457 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2458 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2459 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2460 mjpegb_decoder_select="mjpeg_decoder"
2461 mlp_decoder_select="mlp_parser"
2462 mlp_encoder_select="lpc"
2463 motionpixels_decoder_select="bswapdsp"
2464 mp1_decoder_select="mpegaudio"
2465 mp1float_decoder_select="mpegaudio"
2466 mp2_decoder_select="mpegaudio"
2467 mp2float_decoder_select="mpegaudio"
2468 mp3_decoder_select="mpegaudio"
2469 mp3adu_decoder_select="mpegaudio"
2470 mp3adufloat_decoder_select="mpegaudio"
2471 mp3float_decoder_select="mpegaudio"
2472 mp3on4_decoder_select="mpegaudio"
2473 mp3on4float_decoder_select="mpegaudio"
2474 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2475 mpc8_decoder_select="mpegaudiodsp"
2476 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
2477 mpeg_xvmc_decoder_select="mpeg2video_decoder"
2478 mpegvideo_decoder_select="mpegvideo"
2479 mpeg1video_decoder_select="mpegvideo"
2480 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2481 mpeg2video_decoder_select="mpegvideo"
2482 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2483 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2484 mpeg4_encoder_select="h263_encoder"
2485 msa1_decoder_select="mss34dsp"
2486 mscc_decoder_select="zlib"
2487 msmpeg4v1_decoder_select="h263_decoder"
2488 msmpeg4v2_decoder_select="h263_decoder"
2489 msmpeg4v2_encoder_select="h263_encoder"
2490 msmpeg4v3_decoder_select="h263_decoder"
2491 msmpeg4v3_encoder_select="h263_encoder"
2492 mss2_decoder_select="mpegvideo qpeldsp vc1_decoder"
2493 mts2_decoder_select="mss34dsp"
2494 mxpeg_decoder_select="mjpeg_decoder"
2495 nellymoser_decoder_select="mdct sinewin"
2496 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2497 nuv_decoder_select="idctdsp lzo"
2498 on2avc_decoder_select="mdct"
2499 opus_decoder_deps="swresample"
2500 opus_decoder_select="mdct15"
2501 opus_encoder_select="audio_frame_queue mdct15"
2502 png_decoder_select="zlib"
2503 png_encoder_select="llvidencdsp zlib"
2504 prores_decoder_select="blockdsp idctdsp"
2505 prores_encoder_select="fdctdsp"
2506 qcelp_decoder_select="lsp"
2507 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2508 ra_144_decoder_select="audiodsp"
2509 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2510 ralf_decoder_select="golomb"
2511 rawvideo_decoder_select="bswapdsp"
2512 rscc_decoder_select="zlib"
2513 rtjpeg_decoder_select="me_cmp"
2514 rv10_decoder_select="h263_decoder"
2515 rv10_encoder_select="h263_encoder"
2516 rv20_decoder_select="h263_decoder"
2517 rv20_encoder_select="h263_encoder"
2518 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2519 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2520 screenpresso_decoder_select="zlib"
2521 shorten_decoder_select="bswapdsp"
2522 sipr_decoder_select="lsp"
2523 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2524 snow_encoder_select="aandcttables dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2525 sonic_decoder_select="golomb rangecoder"
2526 sonic_encoder_select="golomb rangecoder"
2527 sonic_ls_encoder_select="golomb rangecoder"
2528 sp5x_decoder_select="mjpeg_decoder"
2529 srgc_decoder_select="zlib"
2530 svq1_decoder_select="hpeldsp"
2531 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2532 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2533 svq3_decoder_suggest="zlib"
2534 tak_decoder_select="audiodsp"
2535 tdsc_decoder_select="zlib mjpeg_decoder"
2536 theora_decoder_select="vp3_decoder"
2537 thp_decoder_select="mjpeg_decoder"
2538 tiff_decoder_suggest="zlib lzma"
2539 tiff_encoder_suggest="zlib"
2540 truehd_decoder_select="mlp_parser"
2541 truehd_encoder_select="lpc"
2542 truemotion2_decoder_select="bswapdsp"
2543 truespeech_decoder_select="bswapdsp"
2544 tscc_decoder_select="zlib"
2545 twinvq_decoder_select="mdct lsp sinewin"
2546 txd_decoder_select="texturedsp"
2547 utvideo_decoder_select="bswapdsp llviddsp"
2548 utvideo_encoder_select="bswapdsp huffman llvidencdsp"
2549 vble_decoder_select="llviddsp"
2550 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 mpegvideo vc1dsp"
2551 vc1_qsv_decoder_deps="libmfx"
2552 vc1_qsv_decoder_select="qsvdec vc1_qsv_hwaccel vc1_parser"
2553 vc1image_decoder_select="vc1_decoder"
2554 vorbis_decoder_select="mdct"
2555 vorbis_encoder_select="mdct"
2556 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2557 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2558 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2559 vp6a_decoder_select="vp6_decoder"
2560 vp6f_decoder_select="vp6_decoder"
2561 vp7_decoder_select="h264pred videodsp vp8dsp"
2562 vp8_decoder_select="h264pred videodsp vp8dsp"
2563 vp9_decoder_select="videodsp vp9_parser"
2564 webp_decoder_select="vp8_decoder exif"
2565 wmalossless_decoder_select="llauddsp"
2566 wmapro_decoder_select="mdct sinewin wma_freqs"
2567 wmav1_decoder_select="mdct sinewin wma_freqs"
2568 wmav1_encoder_select="mdct sinewin wma_freqs"
2569 wmav2_decoder_select="mdct sinewin wma_freqs"
2570 wmav2_encoder_select="mdct sinewin wma_freqs"
2571 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2572 wmv1_decoder_select="h263_decoder"
2573 wmv1_encoder_select="h263_encoder"
2574 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2575 wmv2_encoder_select="h263_encoder wmv2dsp"
2576 wmv3_decoder_select="vc1_decoder"
2577 wmv3image_decoder_select="wmv3_decoder"
2578 xma1_decoder_select="wmapro_decoder"
2579 xma2_decoder_select="wmapro_decoder"
2580 zerocodec_decoder_select="zlib"
2581 zlib_decoder_select="zlib"
2582 zlib_encoder_select="zlib"
2583 zmbv_decoder_select="zlib"
2584 zmbv_encoder_select="zlib"
2585
2586 # platform codecs
2587 audiotoolbox_deps="AudioToolbox_AudioToolbox_h"
2588 audiotoolbox_extralibs="-framework CoreFoundation -framework AudioToolbox -framework CoreMedia"
2589
2590 # hardware accelerators
2591 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2592 cuda_deps_any="dlopen LoadLibrary"
2593 cuvid_deps="cuda"
2594 d3d11va_deps="d3d11_h dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2595 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode"
2596 dxva2_extralibs="-luser32"
2597 dxva2_lib_deps="dxva2"
2598 vda_framework_deps="VideoDecodeAcceleration_VDADecoder_h blocks_extension"
2599 vda_framework_extralibs="-framework VideoDecodeAcceleration"
2600 vda_deps="vda_framework pthreads"
2601 vda_extralibs="-framework CoreFoundation -framework QuartzCore"
2602 videotoolbox_hwaccel_deps="videotoolbox pthreads"
2603 videotoolbox_hwaccel_extralibs="-framework QuartzCore"
2604 xvmc_deps="X11_extensions_XvMClib_h"
2605
2606 h263_vaapi_hwaccel_deps="vaapi"
2607 h263_vaapi_hwaccel_select="h263_decoder"
2608 h263_videotoolbox_hwaccel_deps="videotoolbox"
2609 h263_videotoolbox_hwaccel_select="h263_decoder"
2610 h264_cuvid_hwaccel_deps="cuda cuvid"
2611 h264_cuvid_hwaccel_select="h264_cuvid_decoder"
2612 h264_d3d11va_hwaccel_deps="d3d11va"
2613 h264_d3d11va_hwaccel_select="h264_decoder"
2614 h264_dxva2_hwaccel_deps="dxva2"
2615 h264_dxva2_hwaccel_select="h264_decoder"
2616 h264_mediacodec_hwaccel_deps="mediacodec"
2617 h264_mmal_hwaccel_deps="mmal"
2618 h264_qsv_hwaccel_deps="libmfx"
2619 h264_vaapi_hwaccel_deps="vaapi"
2620 h264_vaapi_hwaccel_select="h264_decoder"
2621 h264_vda_hwaccel_deps="vda"
2622 h264_vda_hwaccel_select="h264_decoder"
2623 h264_vda_old_hwaccel_deps="vda"
2624 h264_vda_old_hwaccel_select="h264_decoder"
2625 h264_vdpau_hwaccel_deps="vdpau"
2626 h264_vdpau_hwaccel_select="h264_decoder"
2627 h264_videotoolbox_hwaccel_deps="videotoolbox"
2628 h264_videotoolbox_hwaccel_select="h264_decoder"
2629 hevc_cuvid_hwaccel_deps="cuda cuvid"
2630 hevc_cuvid_hwaccel_select="hevc_cuvid_decoder"
2631 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2632 hevc_d3d11va_hwaccel_select="hevc_decoder"
2633 hevc_mediacodec_hwaccel_deps="mediacodec"
2634 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2635 hevc_dxva2_hwaccel_select="hevc_decoder"
2636 hevc_qsv_hwaccel_deps="libmfx"
2637 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2638 hevc_vaapi_hwaccel_select="hevc_decoder"
2639 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2640 hevc_vdpau_hwaccel_select="hevc_decoder"
2641 mjpeg_cuvid_hwaccel_deps="cuda cuvid"
2642 mjpeg_cuvid_hwaccel_select="mjpeg_cuvid_decoder"
2643 mpeg_xvmc_hwaccel_deps="xvmc"
2644 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2645 mpeg1_cuvid_hwaccel_deps="cuda cuvid"
2646 mpeg1_cuvid_hwaccel_select="mpeg1_cuvid_decoder"
2647 mpeg1_vdpau_hwaccel_deps="vdpau"
2648 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2649 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2650 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2651 mpeg1_xvmc_hwaccel_deps="xvmc"
2652 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2653 mpeg2_cuvid_hwaccel_deps="cuda cuvid"
2654 mpeg2_cuvid_hwaccel_select="mpeg2_cuvid_decoder"
2655 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2656 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2657 mpeg2_dxva2_hwaccel_deps="dxva2"
2658 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2659 mpeg2_mmal_hwaccel_deps="mmal"
2660 mpeg2_qsv_hwaccel_deps="libmfx"
2661 mpeg2_qsv_hwaccel_select="qsvdec_mpeg2"
2662 mpeg2_vaapi_hwaccel_deps="vaapi"
2663 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2664 mpeg2_vdpau_hwaccel_deps="vdpau"
2665 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2666 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2667 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2668 mpeg2_xvmc_hwaccel_deps="xvmc"
2669 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2670 mpeg4_cuvid_hwaccel_deps="cuda cuvid"
2671 mpeg4_cuvid_hwaccel_select="mpeg4_cuvid_decoder"
2672 mpeg4_mediacodec_hwaccel_deps="mediacodec"
2673 mpeg4_mmal_hwaccel_deps="mmal"
2674 mpeg4_vaapi_hwaccel_deps="vaapi"
2675 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2676 mpeg4_vdpau_hwaccel_deps="vdpau"
2677 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2678 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2679 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2680 vc1_cuvid_hwaccel_deps="cuda cuvid"
2681 vc1_cuvid_hwaccel_select="vc1_cuvid_decoder"
2682 vc1_d3d11va_hwaccel_deps="d3d11va"
2683 vc1_d3d11va_hwaccel_select="vc1_decoder"
2684 vc1_dxva2_hwaccel_deps="dxva2"
2685 vc1_dxva2_hwaccel_select="vc1_decoder"
2686 vc1_mmal_hwaccel_deps="mmal"
2687 vc1_qsv_hwaccel_deps="libmfx"
2688 vc1_qsv_hwaccel_select="qsvdec_vc1"
2689 vc1_vaapi_hwaccel_deps="vaapi"
2690 vc1_vaapi_hwaccel_select="vc1_decoder"
2691 vc1_vdpau_hwaccel_deps="vdpau"
2692 vc1_vdpau_hwaccel_select="vc1_decoder"
2693 vp8_cuvid_hwaccel_deps="cuda cuvid"
2694 vp8_cuvid_hwaccel_select="vp8_cuvid_decoder"
2695 vp9_cuvid_hwaccel_deps="cuda cuvid"
2696 vp9_cuvid_hwaccel_select="vp9_cuvid_decoder"
2697 vp8_mediacodec_hwaccel_deps="mediacodec"
2698 vp8_qsv_hwaccel_deps="libmfx"
2699 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2700 vp9_d3d11va_hwaccel_select="vp9_decoder"
2701 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
2702 vp9_dxva2_hwaccel_select="vp9_decoder"
2703 vp9_mediacodec_hwaccel_deps="mediacodec"
2704 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9_bit_depth"
2705 vp9_vaapi_hwaccel_select="vp9_decoder"
2706 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2707 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2708 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2709 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2710
2711 # hardware-accelerated codecs
2712 omx_deps="dlopen pthreads"
2713 omx_extralibs='$ldl'
2714 omx_rpi_select="omx"
2715 qsvdec_select="qsv"
2716 qsvenc_select="qsv"
2717 vaapi_encode_deps="vaapi"
2718
2719 hwupload_cuda_filter_deps="cuda"
2720 scale_npp_filter_deps="cuda libnpp"
2721 scale_cuda_filter_deps="cuda_sdk"
2722
2723 nvenc_deps="cuda"
2724 nvenc_deps_any="dlopen LoadLibrary"
2725 nvenc_encoder_deps="nvenc"
2726
2727 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2728 h264_cuvid_decoder_deps="cuda cuvid"
2729 h264_cuvid_decoder_select="h264_mp4toannexb_bsf"
2730 h264_mediacodec_decoder_deps="mediacodec"
2731 h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
2732 h264_mmal_decoder_deps="mmal"
2733 h264_nvenc_encoder_deps="nvenc"
2734 h264_omx_encoder_deps="omx"
2735 h264_qsv_decoder_deps="libmfx"
2736 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2737 h264_qsv_encoder_deps="libmfx"
2738 h264_qsv_encoder_select="qsvenc"
2739 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2740 h264_vaapi_encoder_select="vaapi_encode golomb"
2741 h264_vda_decoder_deps="vda"
2742 h264_vda_decoder_select="h264_decoder"
2743 h264_vdpau_decoder_deps="vdpau"
2744 h264_vdpau_decoder_select="h264_decoder"
2745 hevc_cuvid_decoder_deps="cuda cuvid"
2746 hevc_cuvid_decoder_select="hevc_mp4toannexb_bsf"
2747 hevc_mediacodec_decoder_deps="mediacodec"
2748 hevc_mediacodec_decoder_select="hevc_mp4toannexb_bsf hevc_parser"
2749 hevc_nvenc_encoder_deps="nvenc"
2750 hevc_qsv_decoder_deps="libmfx"
2751 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec hevc_qsv_hwaccel"
2752 hevc_qsv_encoder_deps="libmfx"
2753 hevc_qsv_encoder_select="hevcparse qsvenc"
2754 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2755 hevc_vaapi_encoder_select="vaapi_encode golomb"
2756 mjpeg_cuvid_decoder_deps="cuda cuvid"
2757 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2758 mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
2759 mpeg1_cuvid_decoder_deps="cuda cuvid"
2760 mpeg1_vdpau_decoder_deps="vdpau"
2761 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
2762 mpeg2_crystalhd_decoder_select="crystalhd"
2763 mpeg2_cuvid_decoder_deps="cuda cuvid"
2764 mpeg2_mmal_decoder_deps="mmal"
2765 mpeg2_qsv_decoder_deps="libmfx"
2766 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel"
2767 mpeg2_qsv_encoder_deps="libmfx"
2768 mpeg2_qsv_encoder_select="qsvenc"
2769 mpeg2_vaapi_encoder_deps="VAEncPictureParameterBufferMPEG2"
2770 mpeg2_vaapi_encoder_select="vaapi_encode"
2771 mpeg4_crystalhd_decoder_select="crystalhd"
2772 mpeg4_cuvid_decoder_deps="cuda cuvid"
2773 mpeg4_mediacodec_decoder_deps="mediacodec"
2774 mpeg4_mmal_decoder_deps="mmal"
2775 mpeg4_omx_encoder_deps="omx"
2776 mpeg4_vdpau_decoder_deps="vdpau"
2777 mpeg4_vdpau_decoder_select="mpeg4_decoder"
2778 mpeg_vdpau_decoder_deps="vdpau"
2779 mpeg_vdpau_decoder_select="mpeg2video_decoder"
2780 msmpeg4_crystalhd_decoder_select="crystalhd"
2781 nvenc_h264_encoder_select="h264_nvenc_encoder"
2782 nvenc_hevc_encoder_select="hevc_nvenc_encoder"
2783 vc1_crystalhd_decoder_select="crystalhd"
2784 vc1_cuvid_decoder_deps="cuda cuvid"
2785 vc1_mmal_decoder_deps="mmal"
2786 vc1_vdpau_decoder_deps="vdpau"
2787 vc1_vdpau_decoder_select="vc1_decoder"
2788 vp8_cuvid_decoder_deps="cuda cuvid"
2789 vp8_mediacodec_decoder_deps="mediacodec"
2790 vp8_qsv_decoder_deps="libmfx"
2791 vp8_qsv_decoder_select="qsvdec vp8_qsv_hwaccel vp8_parser"
2792 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
2793 vp8_vaapi_encoder_select="vaapi_encode"
2794 vp9_cuvid_decoder_deps="cuda cuvid"
2795 vp9_mediacodec_decoder_deps="mediacodec"
2796 wmv3_crystalhd_decoder_select="crystalhd"
2797 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
2798
2799 # parsers
2800 h264_parser_select="golomb h264dsp h264parse"
2801 hevc_parser_select="hevcparse"
2802 mpegaudio_parser_select="mpegaudioheader"
2803 mpegvideo_parser_select="mpegvideo"
2804 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
2805 vc1_parser_select="vc1dsp"
2806
2807 # bitstream_filters
2808 mjpeg2jpeg_bsf_select="jpegtables"
2809
2810 # external libraries
2811 aac_at_decoder_deps="audiotoolbox"
2812 ac3_at_decoder_deps="audiotoolbox"
2813 ac3_at_decoder_select="ac3_parser"
2814 adpcm_ima_qt_at_decoder_deps="audiotoolbox"
2815 alac_at_decoder_deps="audiotoolbox"
2816 amr_nb_at_decoder_deps="audiotoolbox"
2817 avisynth_deps_any="dlopen LoadLibrary"
2818 avisynth_demuxer_deps="avisynth"
2819 avisynth_demuxer_select="riffdec"
2820 eac3_at_decoder_deps="audiotoolbox"
2821 eac3_at_decoder_select="ac3_parser"
2822 gsm_ms_at_decoder_deps="audiotoolbox"
2823 ilbc_at_decoder_deps="audiotoolbox"
2824 mp1_at_decoder_deps="audiotoolbox"
2825 mp2_at_decoder_deps="audiotoolbox"
2826 mp3_at_decoder_deps="audiotoolbox"
2827 mp1_at_decoder_select="mpegaudioheader"
2828 mp2_at_decoder_select="mpegaudioheader"
2829 mp3_at_decoder_select="mpegaudioheader"
2830 pcm_alaw_at_decoder_deps="audiotoolbox"
2831 pcm_mulaw_at_decoder_deps="audiotoolbox"
2832 qdmc_at_decoder_deps="audiotoolbox"
2833 qdm2_at_decoder_deps="audiotoolbox"
2834 aac_at_encoder_deps="audiotoolbox"
2835 aac_at_encoder_select="audio_frame_queue"
2836 alac_at_encoder_deps="audiotoolbox"
2837 alac_at_encoder_select="audio_frame_queue"
2838 ilbc_at_encoder_deps="audiotoolbox"
2839 ilbc_at_encoder_select="audio_frame_queue"
2840 pcm_alaw_at_encoder_deps="audiotoolbox"
2841 pcm_alaw_at_encoder_select="audio_frame_queue"
2842 pcm_mulaw_at_encoder_deps="audiotoolbox"
2843 pcm_mulaw_at_encoder_select="audio_frame_queue"
2844 chromaprint_muxer_deps="chromaprint"
2845 h264_videotoolbox_encoder_deps="videotoolbox_encoder pthreads"
2846 libcelt_decoder_deps="libcelt"
2847 libfdk_aac_decoder_deps="libfdk_aac"
2848 libfdk_aac_encoder_deps="libfdk_aac"
2849 libfdk_aac_encoder_select="audio_frame_queue"
2850 libgme_demuxer_deps="libgme"
2851 libgsm_decoder_deps="libgsm"
2852 libgsm_encoder_deps="libgsm"
2853 libgsm_ms_decoder_deps="libgsm"
2854 libgsm_ms_encoder_deps="libgsm"
2855 libilbc_decoder_deps="libilbc"
2856 libilbc_encoder_deps="libilbc"
2857 libkvazaar_encoder_deps="libkvazaar"
2858 libmodplug_demuxer_deps="libmodplug"
2859 libmp3lame_encoder_deps="libmp3lame"
2860 libmp3lame_encoder_select="audio_frame_queue mpegaudioheader"
2861 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2862 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2863 libopencore_amrnb_encoder_select="audio_frame_queue"
2864 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2865 libopenh264_decoder_deps="libopenh264"
2866 libopenh264_decoder_select="h264_mp4toannexb_bsf"
2867 libopenh264_encoder_deps="libopenh264"
2868 libopenjpeg_decoder_deps="libopenjpeg"
2869 libopenjpeg_encoder_deps="libopenjpeg"
2870 libopenmpt_demuxer_deps="libopenmpt"
2871 libopus_decoder_deps="libopus"
2872 libopus_encoder_deps="libopus"
2873 libopus_encoder_select="audio_frame_queue"
2874 librsvg_decoder_deps="librsvg"
2875 libshine_encoder_deps="libshine"
2876 libshine_encoder_select="audio_frame_queue"
2877 libspeex_decoder_deps="libspeex"
2878 libspeex_encoder_deps="libspeex"
2879 libspeex_encoder_select="audio_frame_queue"
2880 libtheora_encoder_deps="libtheora"
2881 libtwolame_encoder_deps="libtwolame"
2882 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2883 libvorbis_decoder_deps="libvorbis"
2884 libvorbis_encoder_deps="libvorbis"
2885 libvorbis_encoder_select="audio_frame_queue"
2886 libvpx_vp8_decoder_deps="libvpx"
2887 libvpx_vp8_encoder_deps="libvpx"
2888 libvpx_vp9_decoder_deps="libvpx"
2889 libvpx_vp9_encoder_deps="libvpx"
2890 libwavpack_encoder_deps="libwavpack"
2891 libwavpack_encoder_select="audio_frame_queue"
2892 libwebp_encoder_deps="libwebp"
2893 libwebp_anim_encoder_deps="libwebp"
2894 libx262_encoder_deps="libx262"
2895 libx264_encoder_deps="libx264"
2896 libx264rgb_encoder_deps="libx264 x264_csp_bgr"
2897 libx264rgb_encoder_select="libx264_encoder"
2898 libx265_encoder_deps="libx265"
2899 libxavs_encoder_deps="libxavs"
2900 libxvid_encoder_deps="libxvid"
2901 libzvbi_teletext_decoder_deps="libzvbi"
2902 videotoolbox_deps="VideoToolbox_VideoToolbox_h"
2903 videotoolbox_extralibs="-framework CoreFoundation -framework VideoToolbox -framework CoreMedia -framework CoreVideo"
2904 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
2905 videotoolbox_encoder_suggest="vda_framework vt_bt2020"
2906 vt_bt2020_deps="kCVImageBufferColorPrimaries_ITU_R_2020"
2907
2908 # demuxers / muxers
2909 ac3_demuxer_select="ac3_parser"
2910 aiff_muxer_select="iso_media"
2911 asf_demuxer_select="riffdec"
2912 asf_o_demuxer_select="riffdec"
2913 asf_muxer_select="riffenc"
2914 asf_stream_muxer_select="asf_muxer"
2915 avi_demuxer_select="iso_media riffdec exif"
2916 avi_muxer_select="riffenc"
2917 caf_demuxer_select="iso_media riffdec"
2918 caf_muxer_select="iso_media"
2919 dash_muxer_select="mp4_muxer"
2920 dirac_demuxer_select="dirac_parser"
2921 dts_demuxer_select="dca_parser"
2922 dtshd_demuxer_select="dca_parser"
2923 dv_demuxer_select="dvprofile"
2924 dv_muxer_select="dvprofile"
2925 dxa_demuxer_select="riffdec"
2926 eac3_demuxer_select="ac3_parser"
2927 f4v_muxer_select="mov_muxer"
2928 fifo_muxer_deps="threads"
2929 flac_demuxer_select="flac_parser"
2930 hds_muxer_select="flv_muxer"
2931 hls_muxer_select="mpegts_muxer"
2932 image2_alias_pix_demuxer_select="image2_demuxer"
2933 image2_brender_pix_demuxer_select="image2_demuxer"
2934 ipod_muxer_select="mov_muxer"
2935 ismv_muxer_select="mov_muxer"
2936 matroska_audio_muxer_select="matroska_muxer"
2937 matroska_demuxer_select="iso_media riffdec"
2938 matroska_demuxer_suggest="bzlib lzo zlib"
2939 matroska_muxer_select="iso_media riffenc"
2940 mmf_muxer_select="riffenc"
2941 mov_demuxer_select="iso_media riffdec"
2942 mov_demuxer_suggest="zlib"
2943 mov_muxer_select="iso_media riffenc rtpenc_chain"
2944 mp3_demuxer_select="mpegaudio_parser"
2945 mp3_muxer_select="mpegaudioheader"
2946 mp4_muxer_select="mov_muxer"
2947 mpegts_demuxer_select="iso_media"
2948 mpegts_muxer_select="adts_muxer latm_muxer"
2949 mpegtsraw_demuxer_select="mpegts_demuxer"
2950 mxf_d10_muxer_select="mxf_muxer"
2951 mxf_opatom_muxer_select="mxf_muxer"
2952 nut_muxer_select="riffenc"
2953 nuv_demuxer_select="riffdec"
2954 oga_muxer_select="ogg_muxer"
2955 ogg_demuxer_select="dirac_parse"
2956 ogv_muxer_select="ogg_muxer"
2957 opus_muxer_select="ogg_muxer"
2958 psp_muxer_select="mov_muxer"
2959 rtp_demuxer_select="sdp_demuxer"
2960 rtp_muxer_select="golomb"
2961 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
2962 rtsp_demuxer_select="http_protocol rtpdec"
2963 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2964 sap_demuxer_select="sdp_demuxer"
2965 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2966 sdp_demuxer_select="rtpdec"
2967 smoothstreaming_muxer_select="ismv_muxer"
2968 spdif_muxer_select="aac_parser"
2969 spx_muxer_select="ogg_muxer"
2970 swf_demuxer_suggest="zlib"
2971 tak_demuxer_select="tak_parser"
2972 tg2_muxer_select="mov_muxer"
2973 tgp_muxer_select="mov_muxer"
2974 vobsub_demuxer_select="mpegps_demuxer"
2975 w64_demuxer_select="wav_demuxer"
2976 w64_muxer_select="wav_muxer"
2977 wav_demuxer_select="riffdec"
2978 wav_muxer_select="riffenc"
2979 webm_muxer_select="iso_media riffenc"
2980 webm_dash_manifest_demuxer_select="matroska_demuxer"
2981 wtv_demuxer_select="mpegts_demuxer riffdec"
2982 wtv_muxer_select="mpegts_muxer riffenc"
2983 xmv_demuxer_select="riffdec"
2984 xwma_demuxer_select="riffdec"
2985
2986 # indevs / outdevs
2987 alsa_indev_deps="alsa"
2988 alsa_outdev_deps="alsa"
2989 avfoundation_indev_deps="pthreads"
2990 avfoundation_indev_extralibs="-framework Foundation -framework AVFoundation -framework CoreVideo -framework CoreMedia"
2991 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2992 caca_outdev_deps="libcaca"
2993 decklink_indev_deps="decklink threads"
2994 decklink_indev_extralibs="-lstdc++"
2995 decklink_outdev_deps="decklink threads"
2996 decklink_outdev_extralibs="-lstdc++"
2997 dshow_indev_deps="IBaseFilter"
2998 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
2999 dv1394_indev_deps="dv1394"
3000 dv1394_indev_select="dv_demuxer"
3001 fbdev_indev_deps="linux_fb_h"
3002 fbdev_outdev_deps="linux_fb_h"
3003 gdigrab_indev_deps="CreateDIBSection"
3004 gdigrab_indev_extralibs="-lgdi32"
3005 gdigrab_indev_select="bmp_decoder"
3006 iec61883_indev_deps="libiec61883"
3007 jack_indev_deps="jack"
3008 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
3009 lavfi_indev_deps="avfilter"
3010 libcdio_indev_deps="libcdio"
3011 libdc1394_indev_deps="libdc1394"
3012 libv4l2_indev_deps="libv4l2"
3013 openal_indev_deps="openal"
3014 opengl_outdev_deps="opengl"
3015 oss_indev_deps_any="soundcard_h sys_soundcard_h"
3016 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
3017 pulse_indev_deps="libpulse"
3018 pulse_outdev_deps="libpulse"
3019 qtkit_indev_extralibs="-framework QTKit -framework Foundation -framework QuartzCore"
3020 qtkit_indev_select="qtkit"
3021 sdl2_outdev_deps="sdl2"
3022 sndio_indev_deps="sndio"
3023 sndio_outdev_deps="sndio"
3024 v4l_indev_deps="linux_videodev_h"
3025 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
3026 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
3027 vfwcap_indev_deps="vfw32 vfwcap_defines"
3028 xcbgrab_indev_deps="libxcb"
3029 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
3030 xv_outdev_extralibs="-lXv -lX11 -lXext"
3031
3032 # protocols
3033 async_protocol_deps="threads"
3034 bluray_protocol_deps="libbluray"
3035 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
3036 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
3037 ffrtmpcrypt_protocol_select="tcp_protocol"
3038 ffrtmphttp_protocol_deps="!librtmp_protocol"
3039 ffrtmphttp_protocol_select="http_protocol"
3040 ftp_protocol_select="tcp_protocol"
3041 gopher_protocol_select="network"
3042 http_protocol_select="tcp_protocol"
3043 httpproxy_protocol_select="tcp_protocol"
3044 https_protocol_select="tls_protocol"
3045 icecast_protocol_select="http_protocol"
3046 librtmp_protocol_deps="librtmp"
3047 librtmpe_protocol_deps="librtmp"
3048 librtmps_protocol_deps="librtmp"
3049 librtmpt_protocol_deps="librtmp"
3050 librtmpte_protocol_deps="librtmp"
3051 libsmbclient_protocol_deps="libsmbclient gplv3"
3052 libssh_protocol_deps="libssh"
3053 mmsh_protocol_select="http_protocol"
3054 mmst_protocol_select="network"
3055 rtmp_protocol_deps="!librtmp_protocol"
3056 rtmp_protocol_select="tcp_protocol"
3057 rtmpe_protocol_select="ffrtmpcrypt_protocol"
3058 rtmps_protocol_deps="!librtmp_protocol"
3059 rtmps_protocol_select="tls_protocol"
3060 rtmpt_protocol_select="ffrtmphttp_protocol"
3061 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
3062 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
3063 rtp_protocol_select="udp_protocol"
3064 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
3065 sctp_protocol_select="network"
3066 srtp_protocol_select="rtp_protocol srtp"
3067 tcp_protocol_select="network"
3068 tls_gnutls_protocol_deps="gnutls !tls_schannel_protocol !tls_securetransport_protocol"
3069 tls_gnutls_protocol_select="tcp_protocol"
3070 tls_openssl_protocol_deps="openssl !tls_schannel_protocol !tls_securetransport_protocol !tls_gnutls_protocol"
3071 tls_openssl_protocol_select="tcp_protocol"
3072 tls_schannel_protocol_deps="schannel"
3073 tls_schannel_protocol_select="tcp_protocol"
3074 tls_securetransport_protocol_deps="securetransport"
3075 tls_securetransport_protocol_select="tcp_protocol"
3076 tls_protocol_deps_any="tls_schannel_protocol tls_securetransport_protocol tls_gnutls_protocol tls_openssl_protocol"
3077 udp_protocol_select="network"
3078 udplite_protocol_select="network"
3079 unix_protocol_deps="sys_un_h"
3080 unix_protocol_select="network"
3081
3082 # filters
3083 afftfilt_filter_deps="avcodec"
3084 afftfilt_filter_select="fft"
3085 afir_filter_deps="avcodec"
3086 afir_filter_select="fft"
3087 amovie_filter_deps="avcodec avformat"
3088 aresample_filter_deps="swresample"
3089 ass_filter_deps="libass"
3090 atempo_filter_deps="avcodec"
3091 atempo_filter_select="rdft"
3092 azmq_filter_deps="libzmq"
3093 blackframe_filter_deps="gpl"
3094 boxblur_filter_deps="gpl"
3095 bs2b_filter_deps="libbs2b"
3096 colormatrix_filter_deps="gpl"
3097 cover_rect_filter_deps="avcodec avformat gpl"
3098 cropdetect_filter_deps="gpl"
3099 deinterlace_qsv_filter_deps="libmfx"
3100 deinterlace_vaapi_filter_deps="vaapi"
3101 delogo_filter_deps="gpl"
3102 deshake_filter_select="pixelutils"
3103 drawtext_filter_deps="libfreetype"
3104 elbg_filter_deps="avcodec"
3105 eq_filter_deps="gpl"
3106 fftfilt_filter_deps="avcodec"
3107 fftfilt_filter_select="rdft"
3108 find_rect_filter_deps="avcodec avformat gpl"
3109 firequalizer_filter_deps="avcodec"
3110 firequalizer_filter_select="rdft"
3111 flite_filter_deps="libflite"
3112 framerate_filter_select="pixelutils"
3113 frei0r_filter_deps="frei0r dlopen"
3114 frei0r_src_filter_deps="frei0r dlopen"
3115 fspp_filter_deps="gpl"
3116 geq_filter_deps="gpl"
3117 histeq_filter_deps="gpl"
3118 hqdn3d_filter_deps="gpl"
3119 interlace_filter_deps="gpl"
3120 kerndeint_filter_deps="gpl"
3121 ladspa_filter_deps="ladspa dlopen"
3122 mcdeint_filter_deps="avcodec gpl"
3123 movie_filter_deps="avcodec avformat"
3124 mpdecimate_filter_deps="gpl"
3125 mpdecimate_filter_select="pixelutils"
3126 mptestsrc_filter_deps="gpl"
3127 negate_filter_deps="lut_filter"
3128 nnedi_filter_deps="gpl"
3129 ocr_filter_deps="libtesseract"
3130 ocv_filter_deps="libopencv"
3131 owdenoise_filter_deps="gpl"
3132 pan_filter_deps="swresample"
3133 perspective_filter_deps="gpl"
3134 phase_filter_deps="gpl"
3135 pp7_filter_deps="gpl"
3136 pp_filter_deps="gpl postproc"
3137 pullup_filter_deps="gpl"
3138 removelogo_filter_deps="avcodec avformat swscale"
3139 repeatfields_filter_deps="gpl"
3140 resample_filter_deps="avresample"
3141 rubberband_filter_deps="librubberband"
3142 sab_filter_deps="gpl swscale"
3143 scale2ref_filter_deps="swscale"
3144 scale_filter_deps="swscale"
3145 scale_qsv_filter_deps="libmfx"
3146 select_filter_select="pixelutils"
3147 showcqt_filter_deps="avcodec avformat swscale"
3148 showcqt_filter_select="fft"
3149 showfreqs_filter_deps="avcodec"
3150 showfreqs_filter_select="fft"
3151 showspectrum_filter_deps="avcodec"
3152 showspectrum_filter_select="fft"
3153 showspectrumpic_filter_deps="avcodec"
3154 showspectrumpic_filter_select="fft"
3155 signature_filter_deps="gpl avcodec avformat"
3156 smartblur_filter_deps="gpl swscale"
3157 sofalizer_filter_deps="netcdf avcodec"
3158 sofalizer_filter_select="fft"
3159 spectrumsynth_filter_deps="avcodec"
3160 spectrumsynth_filter_select="fft"
3161 spp_filter_deps="gpl avcodec"
3162 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3163 stereo3d_filter_deps="gpl"
3164 subtitles_filter_deps="avformat avcodec libass"
3165 super2xsai_filter_deps="gpl"
3166 pixfmts_super2xsai_test_deps="super2xsai_filter"
3167 tinterlace_filter_deps="gpl"
3168 tinterlace_merge_test_deps="tinterlace_filter"
3169 tinterlace_pad_test_deps="tinterlace_filter"
3170 uspp_filter_deps="gpl avcodec"
3171 vaguedenoiser_filter_deps="gpl"
3172 vidstabdetect_filter_deps="libvidstab"
3173 vidstabtransform_filter_deps="libvidstab"
3174 zmq_filter_deps="libzmq"
3175 zoompan_filter_deps="swscale"
3176 zscale_filter_deps="libzimg"
3177 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3178
3179 # examples
3180 avio_dir_cmd_deps="avformat avutil"
3181 avio_reading_deps="avformat avcodec avutil"
3182 decode_audio_example_deps="avcodec avutil"
3183 decode_video_example_deps="avcodec avutil"
3184 demuxing_decoding_example_deps="avcodec avformat avutil"
3185 encode_audio_example_deps="avcodec avutil"
3186 encode_video_example_deps="avcodec avutil"
3187 extract_mvs_example_deps="avcodec avformat avutil"
3188 filter_audio_example_deps="avfilter avutil"
3189 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3190 filtering_video_example_deps="avfilter avcodec avformat avutil"
3191 http_multiclient_example_deps="avformat avutil fork"
3192 metadata_example_deps="avformat avutil"
3193 muxing_example_deps="avcodec avformat avutil swscale"
3194 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
3195 remuxing_example_deps="avcodec avformat avutil"
3196 resampling_audio_example_deps="avutil swresample"
3197 scaling_video_example_deps="avutil swscale"
3198 transcode_aac_example_deps="avcodec avformat swresample"
3199 transcoding_example_deps="avfilter avcodec avformat avutil"
3200
3201 # libraries, in linking order
3202 avcodec_deps="avutil"
3203 avcodec_select="null_bsf"
3204 avdevice_deps="avformat avcodec avutil"
3205 avfilter_deps="avutil"
3206 avformat_deps="avcodec avutil"
3207 avresample_deps="avutil"
3208 postproc_deps="avutil gpl"
3209 swresample_deps="avutil"
3210 swscale_deps="avutil"
3211
3212 # programs
3213 ffmpeg_deps="avcodec avfilter avformat swresample"
3214 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3215                null_filter
3216                trim_filter"
3217 ffplay_deps="avcodec avformat swscale swresample sdl2"
3218 ffplay_extralibs='$sdl2_extralibs'
3219 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3220 ffprobe_deps="avcodec avformat"
3221 ffserver_deps="avformat fork sarestart"
3222 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
3223
3224 # documentation
3225 podpages_deps="perl"
3226 manpages_deps="perl pod2man"
3227 htmlpages_deps="perl"
3228 htmlpages_deps_any="makeinfo_html texi2html"
3229 txtpages_deps="perl makeinfo"
3230 doc_deps_any="manpages htmlpages podpages txtpages"
3231
3232 # default parameters
3233
3234 logfile="ffbuild/config.log"
3235
3236 # installation paths
3237 prefix_default="/usr/local"
3238 bindir_default='${prefix}/bin'
3239 datadir_default='${prefix}/share/ffmpeg'
3240 docdir_default='${prefix}/share/doc/ffmpeg'
3241 incdir_default='${prefix}/include'
3242 libdir_default='${prefix}/lib'
3243 mandir_default='${prefix}/share/man'
3244
3245 # toolchain
3246 ar_default="ar"
3247 cc_default="gcc"
3248 cxx_default="g++"
3249 host_cc_default="gcc"
3250 doxygen_default="doxygen"
3251 install="install"
3252 ln_s_default="ln -s -f"
3253 nm_default="nm -g"
3254 objformat="elf"
3255 pkg_config_default=pkg-config
3256 ranlib_default="ranlib"
3257 strip_default="strip"
3258 version_script='--version-script'
3259 yasmexe_default="yasm"
3260 windres_default="windres"
3261 nvcc_default="nvcc"
3262 nvccflags_default="-gencode arch=compute_30,code=sm_30 -O2"
3263
3264 # OS
3265 target_os_default=$(tolower $(uname -s))
3266 host_os=$target_os_default
3267
3268 # machine
3269 if test "$target_os_default" = aix; then
3270     arch_default=$(uname -p)
3271     strip_default="strip -X32_64"
3272 else
3273     arch_default=$(uname -m)
3274 fi
3275 cpu="generic"
3276 intrinsics="none"
3277
3278 # configurable options
3279 enable $PROGRAM_LIST
3280 enable $DOCUMENT_LIST
3281 enable $EXAMPLE_LIST
3282 enable $(filter_out avresample $LIBRARY_LIST)
3283 enable stripping
3284
3285 enable asm
3286 enable debug
3287 enable doc
3288 enable faan faandct faanidct
3289 enable optimizations
3290 enable runtime_cpudetect
3291 enable safe_bitstream_reader
3292 enable static
3293 enable swscale_alpha
3294 enable valgrind_backtrace
3295
3296 sws_max_filter_size_default=256
3297 set_default sws_max_filter_size
3298
3299 # build settings
3300 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3301 LIBPREF="lib"
3302 LIBSUF=".a"
3303 FULLNAME='$(NAME)$(BUILDSUF)'
3304 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3305 SLIBPREF="lib"
3306 SLIBSUF=".so"
3307 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3308 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3309 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3310 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3311 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3312 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3313 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
3314
3315 asflags_filter=echo
3316 cflags_filter=echo
3317 ldflags_filter=echo
3318
3319 AS_C='-c'
3320 AS_O='-o $@'
3321 CC_C='-c'
3322 CC_E='-E -o $@'
3323 CC_O='-o $@'
3324 CXX_C='-c'
3325 CXX_O='-o $@'
3326 OBJCC_C='-c'
3327 OBJCC_E='-E -o $@'
3328 OBJCC_O='-o $@'
3329 LD_O='-o $@'
3330 LD_LIB='-l%'
3331 LD_PATH='-L'
3332 HOSTCC_C='-c'
3333 HOSTCC_E='-E -o $@'
3334 HOSTCC_O='-o $@'
3335 HOSTLD_O='-o $@'
3336 NVCC_C='-c'
3337 NVCC_O='-o $@'
3338
3339 host_extralibs='-lm'
3340 host_cflags_filter=echo
3341 host_ldflags_filter=echo
3342
3343 target_path='$(CURDIR)'
3344
3345 # since the object filename is not given with the -MM flag, the compiler
3346 # is only able to print the basename, and we must add the path ourselves
3347 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3348 DEPFLAGS='-MM'
3349
3350 # find source path
3351 if test -f configure; then
3352     source_path=.
3353 else
3354     source_path=$(cd $(dirname "$0"); pwd)
3355     case "$source_path" in
3356         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3357     esac
3358     test -e "$source_path/config.h" &&
3359         die "Out of tree builds are impossible with config.h in source dir."
3360 fi
3361
3362 for v in "$@"; do
3363     r=${v#*=}
3364     l=${v%"$r"}
3365     r=$(sh_quote "$r")
3366     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3367 done
3368
3369 find_things(){
3370     thing=$1
3371     pattern=$2
3372     file=$source_path/$3
3373     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
3374 }
3375
3376 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
3377 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
3378 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
3379 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
3380 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
3381 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
3382 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
3383 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
3384 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
3385
3386 find_things_extern(){
3387     thing=$1
3388     pattern=$2
3389     file=$source_path/$3
3390     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
3391 }
3392
3393 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3394 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3395
3396 ALL_COMPONENTS="
3397     $BSF_LIST
3398     $DECODER_LIST
3399     $DEMUXER_LIST
3400     $ENCODER_LIST
3401     $FILTER_LIST
3402     $HWACCEL_LIST
3403     $INDEV_LIST
3404     $MUXER_LIST
3405     $OUTDEV_LIST
3406     $PARSER_LIST
3407     $PROTOCOL_LIST
3408 "
3409
3410 for n in $COMPONENT_LIST; do
3411     v=$(toupper ${n%s})_LIST
3412     eval enable \$$v
3413     eval ${n}_if_any="\$$v"
3414 done
3415
3416 enable $ARCH_EXT_LIST
3417
3418 die_unknown(){
3419     echo "Unknown option \"$1\"."
3420     echo "See $0 --help for available options."
3421     exit 1
3422 }
3423
3424 print_in_columns() {
3425     cols=$(expr $ncols / 24)
3426     cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
3427 }
3428
3429 show_list() {
3430     suffix=_$1
3431     shift
3432     echo $* | sed s/$suffix//g | print_in_columns
3433     exit 0
3434 }
3435
3436 rand_list(){
3437     IFS=', '
3438     set -- $*
3439     unset IFS
3440     for thing; do
3441         comp=${thing%:*}
3442         prob=${thing#$comp}
3443         prob=${prob#:}
3444         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3445         echo "prob ${prob:-0.5}"
3446         printf '%s\n' $comp
3447     done
3448 }
3449
3450 do_random(){
3451     action=$1
3452     shift
3453     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3454     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3455 }
3456
3457 for opt do
3458     optval="${opt#*=}"
3459     case "$opt" in
3460         --extra-ldflags=*)
3461             add_ldflags $optval
3462         ;;
3463         --extra-ldexeflags=*)
3464             add_ldexeflags $optval
3465         ;;
3466         --extra-ldlibflags=*)
3467             add_ldlibflags $optval
3468         ;;
3469         --extra-libs=*)
3470             add_extralibs $optval
3471         ;;
3472         --disable-devices)
3473             disable $INDEV_LIST $OUTDEV_LIST
3474         ;;
3475         --enable-debug=*)
3476             debuglevel="$optval"
3477         ;;
3478         --disable-programs)
3479             disable $PROGRAM_LIST
3480         ;;
3481         --disable-everything)
3482             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3483         ;;
3484         --disable-all)
3485             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3486             disable $LIBRARY_LIST $PROGRAM_LIST doc
3487             enable avutil
3488         ;;
3489         --enable-random|--disable-random)
3490             action=${opt%%-random}
3491             do_random ${action#--} $COMPONENT_LIST
3492         ;;
3493         --enable-random=*|--disable-random=*)
3494             action=${opt%%-random=*}
3495             do_random ${action#--} $optval
3496         ;;
3497         --enable-*=*|--disable-*=*)
3498             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3499             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3500             eval list=\$$(toupper $thing)_LIST
3501             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3502             list=$(filter "$name" $list)
3503             [ "$list" = "" ] && warn "Option $opt did not match anything"
3504             $action $list
3505         ;;
3506         --enable-?*|--disable-?*)
3507             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3508             if is_in $option $COMPONENT_LIST; then
3509                 test $action = disable && action=unset
3510                 eval $action \$$(toupper ${option%s})_LIST
3511             elif is_in $option $CMDLINE_SELECT; then
3512                 $action $option
3513             else
3514                 die_unknown $opt
3515             fi
3516         ;;
3517         --list-*)
3518             NAME="${opt#--list-}"
3519             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3520             NAME=${NAME%s}
3521             eval show_list $NAME \$$(toupper $NAME)_LIST
3522         ;;
3523         --help|-h) show_help
3524         ;;
3525         --quiet|-q) quiet=yes
3526         ;;
3527         --fatal-warnings) enable fatal_warnings
3528         ;;
3529         --libfuzzer=*)
3530             libfuzzer_path="$optval"
3531         ;;
3532         *)
3533             optname="${opt%%=*}"
3534             optname="${optname#--}"
3535             optname=$(echo "$optname" | sed 's/-/_/g')
3536             if is_in $optname $CMDLINE_SET; then
3537                 eval $optname='$optval'
3538             elif is_in $optname $CMDLINE_APPEND; then
3539                 append $optname "$optval"
3540             else
3541                 die_unknown $opt
3542             fi
3543         ;;
3544     esac
3545 done
3546
3547 for e in $env; do
3548     eval "export $e"
3549 done
3550
3551 # Mark specifically enabled, but normally autodetected libraries as requested.
3552 for lib in $AUTODETECT_LIBS; do
3553     enabled $lib && request $lib
3554 done
3555
3556 # Enable platform codecs by default.
3557 enable_weak audiotoolbox
3558
3559 # Enable hwaccels by default.
3560 enable_weak d3d11va dxva2 vaapi vda vdpau videotoolbox_hwaccel xvmc
3561 enable_weak xlib
3562
3563 enable_weak cuda cuvid nvenc vda_framework videotoolbox videotoolbox_encoder
3564
3565 disabled logging && logfile=/dev/null
3566
3567 die_license_disabled() {
3568     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
3569 }
3570
3571 die_license_disabled_gpl() {
3572     enabled $1 || { enabled $v && die "$v is incompatible with the gpl and --enable-$1 is not specified."; }
3573 }
3574
3575 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3576 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3577
3578 enabled gpl && map "die_license_disabled_gpl nonfree" $EXTERNAL_LIBRARY_NONFREE_LIST
3579 map "die_license_disabled nonfree" $HWACCEL_LIBRARY_NONFREE_LIST
3580
3581 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3582
3583 # Disable all the library-specific components if the library itself
3584 # is disabled, see AVCODEC_LIST and following _LIST variables.
3585
3586 disable_components(){
3587     disabled ${1} && disable $(
3588         eval components="\$$(toupper ${1})_COMPONENTS"
3589         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
3590     )
3591 }
3592
3593 map 'disable_components $v' $LIBRARY_LIST
3594
3595 mkdir -p ffbuild
3596 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
3597 set >> $logfile
3598
3599 test -n "$valgrind" && toolchain="valgrind-memcheck"
3600
3601 enabled ossfuzz && {
3602     add_cflags  -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp -fno-omit-frame-pointer
3603     add_ldflags -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp
3604 }
3605
3606 case "$toolchain" in
3607     *-asan)
3608         cc_default="${toolchain%-asan}"
3609         add_cflags  -fsanitize=address
3610         add_ldflags -fsanitize=address
3611     ;;
3612     *-msan)
3613         cc_default="${toolchain%-msan}"
3614         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
3615         add_ldflags -fsanitize=memory
3616     ;;
3617     *-tsan)
3618         cc_default="${toolchain%-tsan}"
3619         add_cflags  -fsanitize=thread -fPIE
3620         add_ldflags -fsanitize=thread -pie
3621         case "$toolchain" in
3622             gcc-tsan)
3623                 add_cflags  -fPIC
3624                 add_ldflags -fPIC
3625                 ;;
3626         esac
3627     ;;
3628     *-usan)
3629         cc_default="${toolchain%-usan}"
3630         add_cflags  -fsanitize=undefined
3631         add_ldflags -fsanitize=undefined
3632     ;;
3633     valgrind-*)
3634         target_exec_default="valgrind"
3635         case "$toolchain" in
3636             valgrind-massif)
3637                 target_exec_args="--tool=massif --alloc-fn=av_malloc --alloc-fn=av_mallocz --alloc-fn=av_calloc --alloc-fn=av_fast_padded_malloc --alloc-fn=av_fast_malloc --alloc-fn=av_realloc_f --alloc-fn=av_fast_realloc --alloc-fn=av_realloc"
3638                 ;;
3639             valgrind-memcheck)
3640                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3641                 ;;
3642         esac
3643     ;;
3644     msvc)
3645         # Check whether the current MSVC version needs the C99 converter.
3646         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3647         # support enough of C99 to build ffmpeg. Default to the new
3648         # behaviour if the regexp was unable to match anything, since this
3649         # successfully parses the version number of existing supported
3650         # versions that require the converter (MSVC 2010 and 2012).
3651         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3652         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3653             cc_default="cl"
3654             cxx_default="cl"
3655         else
3656             cc_default="c99wrap cl"
3657             cxx_default="c99wrap cl"
3658         fi
3659         ld_default="$source_path/compat/windows/mslink"
3660         nm_default="dumpbin -symbols"
3661         ar_default="lib"
3662         case "$arch" in
3663         arm*)
3664             as_default="armasm"
3665             ;;
3666         esac
3667         target_os_default="win32"
3668         # Use a relative path for TMPDIR. This makes sure all the
3669         # ffconf temp files are written with a relative path, avoiding
3670         # issues with msys/win32 path conversion for MSVC parameters
3671         # such as -Fo<file> or -out:<file>.
3672         TMPDIR=.
3673     ;;
3674     icl)
3675         cc_default="icl"
3676         ld_default="xilink"
3677         nm_default="dumpbin -symbols"
3678         ar_default="xilib"
3679         target_os_default="win32"
3680         TMPDIR=.
3681     ;;
3682     gcov)
3683         add_cflags  -fprofile-arcs -ftest-coverage
3684         add_ldflags -fprofile-arcs -ftest-coverage
3685     ;;
3686     llvm-cov)
3687         add_cflags -fprofile-arcs -ftest-coverage
3688         add_ldflags --coverage
3689     ;;
3690     hardened)
3691         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3692         add_cflags   -fno-strict-overflow -fstack-protector-all
3693         add_ldflags  -Wl,-z,relro -Wl,-z,now
3694         add_cflags   -fPIE
3695         add_ldexeflags -fPIE -pie
3696     ;;
3697     ?*)
3698         die "Unknown toolchain $toolchain"
3699     ;;
3700 esac
3701
3702 test -n "$cross_prefix" && enable cross_compile
3703
3704 if enabled cross_compile; then
3705     test -n "$arch" && test -n "$target_os" ||
3706         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
3707 fi
3708
3709 ar_default="${cross_prefix}${ar_default}"
3710 cc_default="${cross_prefix}${cc_default}"
3711 cxx_default="${cross_prefix}${cxx_default}"
3712 nm_default="${cross_prefix}${nm_default}"
3713 pkg_config_default="${cross_prefix}${pkg_config_default}"
3714 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
3715     ranlib_default="${cross_prefix}${ranlib_default} -D"
3716 else
3717     ranlib_default="${cross_prefix}${ranlib_default}"
3718 fi
3719 strip_default="${cross_prefix}${strip_default}"
3720 windres_default="${cross_prefix}${windres_default}"
3721
3722 sysinclude_default="${sysroot}/usr/include"
3723
3724 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3725     target_exec target_os yasmexe nvcc
3726 enabled cross_compile || host_cc_default=$cc
3727 set_default host_cc
3728
3729 pkg_config_fail_message=""
3730 if ! $pkg_config --version >/dev/null 2>&1; then
3731     warn "$pkg_config not found, library detection may fail."
3732     pkg_config=false
3733 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
3734     pkg_config_fail_message="
3735 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
3736 fi
3737
3738 if test $doxygen != $doxygen_default && \
3739   ! $doxygen --version >/dev/null 2>&1; then
3740     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3741 fi
3742
3743 exesuf() {
3744     case $1 in
3745         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3746     esac
3747 }
3748
3749 EXESUF=$(exesuf $target_os)
3750 HOSTEXESUF=$(exesuf $host_os)
3751
3752 # set temporary file name
3753 : ${TMPDIR:=$TEMPDIR}
3754 : ${TMPDIR:=$TMP}
3755 : ${TMPDIR:=/tmp}
3756
3757 if [ -n "$tempprefix" ] ; then
3758     mktemp(){
3759         tmpname="$tempprefix.${HOSTNAME}.${UID}"
3760         echo "$tmpname"
3761         mkdir "$tmpname"
3762     }
3763 elif ! check_cmd mktemp -u XXXXXX; then
3764     # simple replacement for missing mktemp
3765     # NOT SAFE FOR GENERAL USE
3766     mktemp(){
3767         tmpname="${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3768         echo "$tmpname"
3769         mkdir "$tmpname"
3770     }
3771 fi
3772
3773 FFTMPDIR=$(mktemp -d "${TMPDIR}/ffconf.XXXXXXXX" 2> /dev/null) ||
3774     die "Unable to create temporary directory in $TMPDIR."
3775
3776 tmpfile(){
3777     tmp="${FFTMPDIR}/test"$2
3778     (set -C; exec > $tmp) 2> /dev/null ||
3779         die "Unable to create temporary file in $FFTMPDIR."
3780     eval $1=$tmp
3781 }
3782
3783 trap 'rm -rf -- "$FFTMPDIR"' EXIT
3784 trap 'exit 2' INT
3785
3786 tmpfile TMPASM .asm
3787 tmpfile TMPC   .c
3788 tmpfile TMPCPP .cpp
3789 tmpfile TMPE   $EXESUF
3790 tmpfile TMPH   .h
3791 tmpfile TMPM   .m
3792 tmpfile TMPO   .o
3793 tmpfile TMPS   .S
3794 tmpfile TMPSH  .sh
3795 tmpfile TMPV   .ver
3796
3797 unset -f mktemp
3798
3799 chmod +x $TMPE
3800
3801 # make sure we can execute files in $TMPDIR
3802 cat > $TMPSH 2>> $logfile <<EOF
3803 #! /bin/sh
3804 EOF
3805 chmod +x $TMPSH >> $logfile 2>&1
3806 if ! $TMPSH >> $logfile 2>&1; then
3807     cat <<EOF
3808 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3809 variable to another directory and make sure that it is not mounted noexec.
3810 EOF
3811     die "Sanity test failed."
3812 fi
3813
3814 armasm_flags(){
3815     for flag; do
3816         case $flag in
3817             # Filter out MSVC cl.exe options from cflags that shouldn't
3818             # be passed to gas-preprocessor
3819             -M[TD]*)                                            ;;
3820             *)                  echo $flag                      ;;
3821         esac
3822    done
3823 }
3824
3825 ccc_flags(){
3826     for flag; do
3827         case $flag in
3828             -std=c99)           echo -c99                       ;;
3829             -mcpu=*)            echo -arch ${flag#*=}           ;;
3830             -mieee)             echo -ieee                      ;;
3831             -O*|-fast)          echo $flag                      ;;
3832             -fno-math-errno)    echo -assume nomath_errno       ;;
3833             -g)                 echo -g3                        ;;
3834             -Wall)              echo -msg_enable level2         ;;
3835             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
3836             -Wl,*)              echo $flag                      ;;
3837             -f*|-W*)                                            ;;
3838             *)                  echo $flag                      ;;
3839         esac
3840    done
3841 }
3842
3843 cparser_flags(){
3844     for flag; do
3845         case $flag in
3846             -Wno-switch)             echo -Wno-switch-enum ;;
3847             -Wno-format-zero-length) ;;
3848             -Wdisabled-optimization) ;;
3849             -Wno-pointer-sign)       echo -Wno-other ;;
3850             *)                       echo $flag ;;
3851         esac
3852     done
3853 }
3854
3855 msvc_common_flags(){
3856     for flag; do
3857         case $flag in
3858             # In addition to specifying certain flags under the compiler
3859             # specific filters, they must be specified here as well or else the
3860             # generic catch all at the bottom will print the original flag.
3861             -Wall)                ;;
3862             -Wextra)              ;;
3863             -std=c99)             ;;
3864             # Common flags
3865             -fomit-frame-pointer) ;;
3866             -g)                   echo -Z7 ;;
3867             -fno-math-errno)      ;;
3868             -fno-common)          ;;
3869             -fno-signed-zeros)    ;;
3870             -fPIC)                ;;
3871             -mthumb)              ;;
3872             -march=*)             ;;
3873             -lz)                  echo zlib.lib ;;
3874             -lx264)               echo libx264.lib ;;
3875             -lstdc++)             ;;
3876             -l*)                  echo ${flag#-l}.lib ;;
3877             -LARGEADDRESSAWARE)   echo $flag ;;
3878             -L*)                  echo -libpath:${flag#-L} ;;
3879             *)                    echo $flag ;;
3880         esac
3881     done
3882 }
3883
3884 msvc_flags(){
3885     msvc_common_flags "$@"
3886     for flag; do
3887         case $flag in
3888             -Wall)                echo -W3 -wd4018 -wd4146 -wd4244 -wd4305     \
3889                                        -wd4554 ;;
3890             -Wextra)              echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3891                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3892                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3893                                        -wd4307 \
3894                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
3895         esac
3896     done
3897 }
3898
3899 icl_flags(){
3900     msvc_common_flags "$@"
3901     for flag; do
3902         case $flag in
3903             # Despite what Intel's documentation says -Wall, which is supported
3904             # on Windows, does enable remarks so disable them here.
3905             -Wall)                echo $flag -Qdiag-disable:remark ;;
3906             -std=c99)             echo -Qstd=c99 ;;
3907             -flto)                echo -ipo ;;
3908         esac
3909     done
3910 }
3911
3912 icc_flags(){
3913     for flag; do
3914         case $flag in
3915             -flto)                echo -ipo ;;
3916             *)                    echo $flag ;;
3917         esac
3918     done
3919 }
3920
3921 pgi_flags(){
3922     for flag; do
3923         case $flag in
3924             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3925             -fomit-frame-pointer) echo -Mnoframe ;;
3926             -g)                   echo -gopt ;;
3927             *)                    echo $flag ;;
3928         esac
3929     done
3930 }
3931
3932 suncc_flags(){
3933     for flag; do
3934         case $flag in
3935             -march=*|-mcpu=*)
3936                 case "${flag#*=}" in
3937                     native)                   echo -xtarget=native       ;;
3938                     v9|niagara)               echo -xarch=sparc          ;;
3939                     ultrasparc)               echo -xarch=sparcvis       ;;
3940                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3941                     i586|pentium)             echo -xchip=pentium        ;;
3942                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3943                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3944                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3945                     pentium4*)          echo -xtarget=pentium4           ;;
3946                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3947                     *-sse3)             echo -xarch=sse3                 ;;
3948                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3949                     bonnell)                   echo -xarch=ssse3         ;;
3950                     corei7|nehalem)            echo -xtarget=nehalem     ;;
3951                     westmere)                  echo -xtarget=westmere    ;;
3952                     silvermont)                echo -xarch=sse4_2        ;;
3953                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
3954                     core-avx*|ivybridge|haswell|broadwell|skylake*|knl)
3955                                                echo -xarch=avx           ;;
3956                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
3957                     btver1)                    echo -xarch=amdsse4a      ;;
3958                     btver2|bdver*|znver*)      echo -xarch=avx           ;;
3959                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3960                     k8|opteron|athlon64|athlon-fx)
3961                                                echo -xarch=sse2a         ;;
3962                     athlon*)                   echo -xarch=pentium_proa  ;;
3963                 esac
3964                 ;;
3965             -std=c99)             echo -xc99              ;;
3966             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3967             -fPIC)                echo -KPIC -xcode=pic32 ;;
3968             -W*,*)                echo $flag              ;;
3969             -f*-*|-W*|-mimpure-text)                      ;;
3970             -shared)              echo -G                 ;;
3971             *)                    echo $flag              ;;
3972         esac
3973     done
3974 }
3975
3976 tms470_flags(){
3977     for flag; do
3978         case $flag in
3979             -march=*|-mcpu=*)
3980                 case "${flag#*=}" in
3981                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3982                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3983                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3984                     armv6*|arm11*)          echo -mv=6   ;;
3985                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3986                                             echo -mv=5e  ;;
3987                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3988                 esac
3989                 ;;
3990             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3991             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3992             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3993             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3994             -msoft-float)   echo --float_support=vfplib       ;;
3995             -O[0-3]|-mf=*)  echo $flag                        ;;
3996             -g)             echo -g -mn                       ;;
3997             -pds=*)         echo $flag                        ;;
3998             -D*|-I*)        echo $flag                        ;;
3999             --gcc|--abi=*)  echo $flag                        ;;
4000             -me)            echo $flag                        ;;
4001         esac
4002     done
4003 }
4004
4005 probe_cc(){
4006     pfx=$1
4007     _cc=$2
4008     first=$3
4009
4010     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
4011     unset _ld_o _ldflags _ld_lib _ld_path
4012     unset _depflags _DEPCMD _DEPFLAGS
4013     _flags_filter=echo
4014
4015     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
4016         true # no-op to avoid reading stdin in following checks
4017     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
4018         _type=llvm_gcc
4019         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
4020         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
4021         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4022         _cflags_speed='-O3'
4023         _cflags_size='-Os'
4024     elif $_cc -v 2>&1 | grep -qi ^gcc; then
4025         _type=gcc
4026         gcc_version=$($_cc --version | head -n1)
4027         gcc_basever=$($_cc -dumpversion)
4028         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
4029         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
4030         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
4031         case $gcc_basever in
4032             2) ;;
4033             2.*) ;;
4034             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
4035         esac
4036         if [ "$first" = true ]; then
4037             case $gcc_basever in
4038                 4.2*)
4039                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
4040             esac
4041         fi
4042         _cflags_speed='-O3'
4043         _cflags_size='-Os'
4044     elif $_cc --version 2>/dev/null | grep -q ^icc; then
4045         _type=icc
4046         _ident=$($_cc --version | head -n1)
4047         _depflags='-MMD'
4048         _cflags_speed='-O3'
4049         _cflags_size='-Os'
4050         _cflags_noopt='-O1'
4051         _flags_filter=icc_flags
4052     elif $_cc -v 2>&1 | grep -q xlc; then
4053         _type=xlc
4054         _ident=$($_cc -qversion 2>/dev/null | head -n1)
4055         _cflags_speed='-O5'
4056         _cflags_size='-O5 -qcompact'
4057     elif $_cc -V 2>/dev/null | grep -q Compaq; then
4058         _type=ccc
4059         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
4060         _DEPFLAGS='-M'
4061         _cflags_speed='-fast'
4062         _cflags_size='-O1'
4063         _flags_filter=ccc_flags
4064     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
4065         test -d "$sysroot" || die "No valid sysroot specified."
4066         _type=armcc
4067         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
4068         armcc_conf="$PWD/armcc.conf"
4069         $_cc --arm_linux_configure                 \
4070              --arm_linux_config_file="$armcc_conf" \
4071              --configure_sysroot="$sysroot"        \
4072              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
4073              die "Error creating armcc configuration file."
4074         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
4075         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
4076         as_default="${cross_prefix}gcc"
4077         _depflags='-MMD'
4078         _cflags_speed='-O3'
4079         _cflags_size='-Os'
4080     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
4081         _type=tms470
4082         _ident=$($_cc -version | head -n1 | tr -s ' ')
4083         _flags='--gcc --abi=eabi -me'
4084         _cc_e='-ppl -fe=$@'
4085         _cc_o='-fe=$@'
4086         _depflags='-ppa -ppd=$(@:.o=.d)'
4087         _cflags_speed='-O3 -mf=5'
4088         _cflags_size='-O3 -mf=2'
4089         _flags_filter=tms470_flags
4090     elif $_cc -v 2>&1 | grep -q clang; then
4091         _type=clang
4092         _ident=$($_cc --version 2>/dev/null | head -n1)
4093         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4094         _cflags_speed='-O3'
4095         _cflags_size='-Oz'
4096     elif $_cc -V 2>&1 | grep -q Sun; then
4097         _type=suncc
4098         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
4099         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
4100         _DEPFLAGS='-xM1 -xc99'
4101         _ldflags='-std=c99'
4102         _cflags_speed='-O5'
4103         _cflags_size='-O5 -xspace'
4104         _flags_filter=suncc_flags
4105     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
4106         _type=pathscale
4107         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4108         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4109         _cflags_speed='-O2'
4110         _cflags_size='-Os'
4111         _flags_filter='filter_out -Wdisabled-optimization'
4112     elif $_cc -v 2>&1 | grep -q Open64; then
4113         _type=open64
4114         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4115         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4116         _cflags_speed='-O2'
4117         _cflags_size='-Os'
4118         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
4119     elif $_cc -V 2>&1 | grep -q Portland; then
4120         _type=pgi
4121         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
4122         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
4123         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
4124         _cflags_size="-O2 -Munroll=c:1 $opt_common"
4125         _cflags_noopt="-O"
4126         _flags_filter=pgi_flags
4127     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
4128         _type=armasm
4129         _ident=$($_cc | head -n1)
4130         # 4509: "This form of conditional instruction is deprecated"
4131         _flags="-nologo -ignore 4509"
4132         _flags_filter=armasm_flags
4133     elif $_cc 2>&1 | grep -q Intel; then
4134         _type=icl
4135         _ident=$($_cc 2>&1 | head -n1)
4136         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
4137         # Not only is O3 broken on 13.x+ but it is slower on all previous
4138         # versions (tested) as well.
4139         _cflags_speed="-O2"
4140         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
4141         if $_cc 2>&1 | grep -q Linker; then
4142             _ld_o='-out:$@'
4143         else
4144             _ld_o='-Fe$@'
4145         fi
4146         _cc_o='-Fo$@'
4147         _cc_e='-P'
4148         _flags_filter=icl_flags
4149         _ld_lib='lib%.a'
4150         _ld_path='-libpath:'
4151         # -Qdiag-error to make icl error when seeing certain unknown arguments
4152         _flags='-nologo -Qdiag-error:4044,10157'
4153         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
4154         # with MSVC which enables it by default.
4155         _cflags='-Qms0 -Qvec- -Qsimd- -GS -fp:precise'
4156         disable stripping
4157     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
4158         # lld can emulate multiple different linkers; in ms link.exe mode,
4159         # the -? parameter gives the help output which contains an identifyable
4160         # string, while it gives an error in other modes.
4161         _type=lld-link
4162         # The link.exe mode doesn't have a switch for getting the version,
4163         # but we can force it back to gnu mode and get the version from there.
4164         _ident=$($_cc -flavor gnu --version 2>/dev/null)
4165         _ld_o='-out:$@'
4166         _flags_filter=msvc_flags
4167         _ld_lib='lib%.a'
4168         _ld_path='-libpath:'
4169     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
4170         _type=msvc
4171         _ident=$($_cc 2>&1 | head -n1)
4172         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
4173         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
4174         _cflags_speed="-O2"
4175         _cflags_size="-O1"
4176         _cflags_noopt="-O1"
4177         if $_cc -nologo- 2>&1 | grep -q Linker; then
4178             _ld_o='-out:$@'
4179         else
4180             _ld_o='-Fe$@'
4181         fi
4182         _cc_o='-Fo$@'
4183         _cc_e='-P -Fi$@'
4184         _flags_filter=msvc_flags
4185         _ld_lib='lib%.a'
4186         _ld_path='-libpath:'
4187         _flags='-nologo'
4188         disable stripping
4189     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
4190         _type=cparser
4191         _ident=$($_cc --version | head -n1)
4192         _depflags='-MMD'
4193         _cflags_speed='-O4'
4194         _cflags_size='-O2'
4195         _flags_filter=cparser_flags
4196     fi
4197
4198     eval ${pfx}_type=\$_type
4199     eval ${pfx}_ident=\$_ident
4200 }
4201
4202 set_ccvars(){
4203     eval ${1}_C=\${_cc_c-\${${1}_C}}
4204     eval ${1}_E=\${_cc_e-\${${1}_E}}
4205     eval ${1}_O=\${_cc_o-\${${1}_O}}
4206
4207     if [ -n "$_depflags" ]; then
4208         eval ${1}_DEPFLAGS=\$_depflags
4209     else
4210         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
4211         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
4212         eval DEP${1}FLAGS=\$_flags
4213     fi
4214 }
4215
4216 probe_cc cc "$cc" "true"
4217 cflags_filter=$_flags_filter
4218 cflags_speed=$_cflags_speed
4219 cflags_size=$_cflags_size
4220 cflags_noopt=$_cflags_noopt
4221 add_cflags $_flags $_cflags
4222 cc_ldflags=$_ldflags
4223 set_ccvars CC
4224 set_ccvars CXX
4225
4226 probe_cc hostcc "$host_cc"
4227 host_cflags_filter=$_flags_filter
4228 host_cflags_speed=$_cflags_speed
4229 add_host_cflags  $_flags $_cflags
4230 set_ccvars HOSTCC
4231
4232 test -n "$cc_type" && enable $cc_type ||
4233     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4234
4235 : ${as_default:=$cc}
4236 : ${objcc_default:=$cc}
4237 : ${dep_cc_default:=$cc}
4238 : ${ld_default:=$cc}
4239 : ${host_ld_default:=$host_cc}
4240 set_default ar as objcc dep_cc ld ln_s host_ld windres
4241
4242 probe_cc as "$as"
4243 asflags_filter=$_flags_filter
4244 add_asflags $_flags $_cflags
4245 set_ccvars AS
4246
4247 probe_cc objcc "$objcc"
4248 objcflags_filter=$_flags_filter
4249 add_objcflags $_flags $_cflags
4250 set_ccvars OBJC
4251
4252 probe_cc ld "$ld"
4253 ldflags_filter=$_flags_filter
4254 add_ldflags $_flags $_ldflags
4255 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4256 LD_O=${_ld_o-$LD_O}
4257 LD_LIB=${_ld_lib-$LD_LIB}
4258 LD_PATH=${_ld_path-$LD_PATH}
4259
4260 probe_cc hostld "$host_ld"
4261 host_ldflags_filter=$_flags_filter
4262 add_host_ldflags $_flags $_ldflags
4263 HOSTLD_O=${_ld_o-$HOSTLD_O}
4264
4265 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4266     probe_cc depcc "$dep_cc"
4267     CCDEP=${_DEPCMD:-$DEPCMD}
4268     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4269     DEPCCFLAGS=$_flags
4270 fi
4271
4272 if $ar 2>&1 | grep -q Microsoft; then
4273     arflags="-nologo"
4274     ar_o='-out:$@'
4275 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
4276     arflags="rq"
4277     ar_o='$@'
4278 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
4279     arflags='-Xany -r -c'
4280     ar_o='$@'
4281 elif $ar 2>&1 | grep -q "\[D\] "; then
4282     arflags="rcD"
4283     ar_o='$@'
4284 else
4285     arflags="rc"
4286     ar_o='$@'
4287 fi
4288
4289 add_cflags $extra_cflags
4290 add_cxxflags $extra_cxxflags
4291 add_objcflags $extra_objcflags
4292 add_asflags $extra_cflags
4293
4294 if test -n "$sysroot"; then
4295     case "$cc_type" in
4296         gcc|llvm_gcc|clang)
4297             add_cppflags --sysroot="$sysroot"
4298             add_ldflags --sysroot="$sysroot"
4299 # On Darwin --sysroot may be ignored, -isysroot always affects headers and linking
4300             add_cppflags -isysroot "$sysroot"
4301             add_ldflags -isysroot "$sysroot"
4302         ;;
4303         tms470)
4304             add_cppflags -I"$sysinclude"
4305             add_ldflags  --sysroot="$sysroot"
4306         ;;
4307     esac
4308 fi
4309
4310 if test "$cpu" = host; then
4311     enabled cross_compile &&
4312         die "--cpu=host makes no sense when cross-compiling."
4313
4314     case "$cc_type" in
4315         gcc|llvm_gcc)
4316             check_native(){
4317                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4318                 sed -n "/cc1.*$1=/{
4319                             s/.*$1=\\([^ ]*\\).*/\\1/
4320                             p
4321                             q
4322                         }" $TMPE
4323             }
4324             cpu=$(check_native -march || check_native -mcpu)
4325         ;;
4326         clang)
4327             check_native(){
4328                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4329                 sed -n "/cc1.*-target-cpu /{
4330                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4331                             p
4332                             q
4333                         }" $TMPE
4334             }
4335             cpu=$(check_native -march)
4336         ;;
4337     esac
4338
4339     test "${cpu:-host}" = host &&
4340         die "--cpu=host not supported with compiler $cc"
4341 fi
4342
4343 # Deal with common $arch aliases
4344 case "$arch" in
4345     aarch64|arm64)
4346         arch="aarch64"
4347     ;;
4348     arm*|iPad*|iPhone*)
4349         arch="arm"
4350     ;;
4351     mips*|IP*)
4352         case "$arch" in
4353         *el)
4354             add_cppflags -EL
4355             add_ldflags -EL
4356         ;;
4357         *eb)
4358             add_cppflags -EB
4359             add_ldflags -EB
4360         ;;
4361         esac
4362         arch="mips"
4363     ;;
4364     parisc*|hppa*)
4365         arch="parisc"
4366     ;;
4367     "Power Macintosh"|ppc*|powerpc*)
4368         arch="ppc"
4369     ;;
4370     s390|s390x)
4371         arch="s390"
4372     ;;
4373     sh4|sh)
4374         arch="sh4"
4375     ;;
4376     sun4*|sparc*)
4377         arch="sparc"
4378     ;;
4379     tilegx|tile-gx)
4380         arch="tilegx"
4381     ;;
4382     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4383         arch="x86"
4384     ;;
4385 esac
4386
4387 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4388 enable $arch
4389
4390 # Add processor-specific flags
4391 if enabled aarch64; then
4392
4393     case $cpu in
4394         armv*)
4395             cpuflags="-march=$cpu"
4396         ;;
4397         *)
4398             cpuflags="-mcpu=$cpu"
4399         ;;
4400     esac
4401
4402 elif enabled alpha; then
4403
4404     cpuflags="-mcpu=$cpu"
4405
4406 elif enabled arm; then
4407
4408     check_arm_arch() {
4409         check_cpp_condition stddef.h \
4410             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4411             $cpuflags
4412     }
4413
4414     probe_arm_arch() {
4415         if   check_arm_arch 4;        then echo armv4
4416         elif check_arm_arch 4T;       then echo armv4t
4417         elif check_arm_arch 5;        then echo armv5
4418         elif check_arm_arch 5E;       then echo armv5e
4419         elif check_arm_arch 5T;       then echo armv5t
4420         elif check_arm_arch 5TE;      then echo armv5te
4421         elif check_arm_arch 5TEJ;     then echo armv5te
4422         elif check_arm_arch 6;        then echo armv6
4423         elif check_arm_arch 6J;       then echo armv6j
4424         elif check_arm_arch 6K;       then echo armv6k
4425         elif check_arm_arch 6Z;       then echo armv6z
4426         elif check_arm_arch 6ZK;      then echo armv6zk
4427         elif check_arm_arch 6T2;      then echo armv6t2
4428         elif check_arm_arch 7;        then echo armv7
4429         elif check_arm_arch 7A  7_A;  then echo armv7-a
4430         elif check_arm_arch 7S;       then echo armv7-a
4431         elif check_arm_arch 7R  7_R;  then echo armv7-r
4432         elif check_arm_arch 7M  7_M;  then echo armv7-m
4433         elif check_arm_arch 7EM 7E_M; then echo armv7-m
4434         elif check_arm_arch 8A  8_A;  then echo armv8-a
4435         fi
4436     }
4437
4438     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4439
4440     case $cpu in
4441         armv*)
4442             cpuflags="-march=$cpu"
4443             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4444         ;;
4445         *)
4446             cpuflags="-mcpu=$cpu"
4447             case $cpu in
4448                 cortex-a*)                               subarch=armv7a  ;;
4449                 cortex-r*)                               subarch=armv7r  ;;
4450                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4451                 arm11*)                                  subarch=armv6   ;;
4452                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4453                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4454                 *)                             subarch=$(probe_arm_arch) ;;
4455             esac
4456         ;;
4457     esac
4458
4459     case "$subarch" in
4460         armv5t*)    enable fast_clz                ;;
4461         armv[6-8]*)
4462             enable fast_clz
4463             disabled fast_unaligned || enable fast_unaligned
4464             ;;
4465     esac
4466
4467 elif enabled avr32; then
4468
4469     case $cpu in
4470         ap7[02]0[0-2])
4471             subarch="avr32_ap"
4472             cpuflags="-mpart=$cpu"
4473         ;;
4474         ap)
4475             subarch="avr32_ap"
4476             cpuflags="-march=$cpu"
4477         ;;
4478         uc3[ab]*)
4479             subarch="avr32_uc"
4480             cpuflags="-mcpu=$cpu"
4481         ;;
4482         uc)
4483             subarch="avr32_uc"
4484             cpuflags="-march=$cpu"
4485         ;;
4486     esac
4487
4488 elif enabled bfin; then
4489
4490     cpuflags="-mcpu=$cpu"
4491
4492 elif enabled mips; then
4493
4494     cpuflags="-march=$cpu"
4495
4496     if [ "$cpu" != "generic" ]; then
4497         disable mips32r2
4498         disable mips32r5
4499         disable mips64r2
4500         disable mips32r6
4501         disable mips64r6
4502         disable loongson2
4503         disable loongson3
4504
4505         case $cpu in
4506             24kc|24kf*|24kec|34kc|1004kc|24kef*|34kf*|1004kf*|74kc|74kf)
4507                 enable mips32r2
4508                 disable msa
4509             ;;
4510             p5600|i6400|p6600)
4511                 disable mipsdsp
4512                 disable mipsdspr2
4513             ;;
4514             loongson*)
4515                 enable loongson2
4516                 enable loongson3
4517                 enable local_aligned_8 local_aligned_16 local_aligned_32
4518                 enable simd_align_16
4519                 enable fast_64bit
4520                 enable fast_clz
4521                 enable fast_cmov
4522                 enable fast_unaligned
4523                 disable aligned_stack
4524                 disable mipsfpu
4525                 disable mipsdsp
4526                 disable mipsdspr2
4527                 case $cpu in
4528                     loongson3*)
4529                         cpuflags="-march=loongson3a -mhard-float -fno-expensive-optimizations"
4530                     ;;
4531                     loongson2e)
4532                         cpuflags="-march=loongson2e -mhard-float -fno-expensive-optimizations"
4533                     ;;
4534                     loongson2f)
4535                         cpuflags="-march=loongson2f -mhard-float -fno-expensive-optimizations"
4536                     ;;
4537                 esac
4538             ;;
4539             *)
4540                 # Unknown CPU. Disable everything.
4541                 warn "unknown CPU. Disabling all MIPS optimizations."
4542                 disable mipsfpu
4543                 disable mipsdsp
4544                 disable mipsdspr2
4545                 disable msa
4546                 disable mmi
4547             ;;
4548         esac
4549
4550         case $cpu in
4551             24kc)
4552                 disable mipsfpu
4553                 disable mipsdsp
4554                 disable mipsdspr2
4555             ;;
4556             24kf*)
4557                 disable mipsdsp
4558                 disable mipsdspr2
4559             ;;
4560             24kec|34kc|1004kc)
4561                 disable mipsfpu
4562                 disable mipsdspr2
4563             ;;
4564             24kef*|34kf*|1004kf*)
4565                 disable mipsdspr2
4566             ;;
4567             74kc)
4568                 disable mipsfpu
4569             ;;
4570             p5600)
4571                 enable mips32r5
4572                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
4573             ;;
4574             i6400)
4575                 enable mips64r6
4576                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4577             ;;
4578             p6600)
4579                 enable mips64r6
4580                 check_cflags "-mtune=p6600 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4581             ;;
4582         esac
4583     else
4584         # We do not disable anything. Is up to the user to disable the unwanted features.
4585         warn 'generic cpu selected'
4586     fi
4587
4588 elif enabled ppc; then
4589
4590     disable ldbrx
4591
4592     case $(tolower $cpu) in
4593         601|ppc601|powerpc601)
4594             cpuflags="-mcpu=601"
4595             disable altivec
4596         ;;
4597         603*|ppc603*|powerpc603*)
4598             cpuflags="-mcpu=603"
4599             disable altivec
4600         ;;
4601         604*|ppc604*|powerpc604*)
4602             cpuflags="-mcpu=604"
4603             disable altivec
4604         ;;
4605         g3|75*|ppc75*|powerpc75*)
4606             cpuflags="-mcpu=750"
4607             disable altivec
4608         ;;
4609         g4|745*|ppc745*|powerpc745*)
4610             cpuflags="-mcpu=7450"
4611             disable vsx
4612         ;;
4613         74*|ppc74*|powerpc74*)
4614             cpuflags="-mcpu=7400"
4615             disable vsx
4616         ;;
4617         g5|970|ppc970|powerpc970)
4618             cpuflags="-mcpu=970"
4619             disable vsx
4620         ;;
4621         power[3-6]*)
4622             cpuflags="-mcpu=$cpu"
4623             disable vsx
4624         ;;
4625         power[7-8]*)
4626             cpuflags="-mcpu=$cpu"
4627         ;;
4628         cell)
4629             cpuflags="-mcpu=cell"
4630             enable ldbrx
4631             disable vsx
4632         ;;
4633         e500mc)
4634             cpuflags="-mcpu=e500mc"
4635             disable altivec
4636         ;;
4637         e500v2)
4638             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
4639             disable altivec
4640             disable dcbzl
4641         ;;
4642         e500)
4643             cpuflags="-mcpu=8540 -mhard-float"
4644             disable altivec
4645             disable dcbzl
4646         ;;
4647     esac
4648
4649 elif enabled sparc; then
4650
4651     case $cpu in
4652         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
4653             cpuflags="-mcpu=$cpu"
4654         ;;
4655         ultrasparc*|niagara[234])
4656             cpuflags="-mcpu=$cpu"
4657         ;;
4658     esac
4659
4660 elif enabled x86; then
4661
4662     case $cpu in
4663         i[345]86|pentium)
4664             cpuflags="-march=$cpu"
4665             disable i686
4666             disable mmx
4667         ;;
4668         # targets that do NOT support nopl and conditional mov (cmov)
4669         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
4670             cpuflags="-march=$cpu"
4671             disable i686
4672         ;;
4673         # targets that do support nopl and conditional mov (cmov)
4674         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
4675         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|skylake*|knl\
4676         |amdfam10|barcelona|b[dt]ver*|znver*)
4677             cpuflags="-march=$cpu"
4678             enable i686
4679             enable fast_cmov
4680         ;;
4681         # targets that do support conditional mov but on which it's slow
4682         pentium4|pentium4m|prescott|nocona)
4683             cpuflags="-march=$cpu"
4684             enable i686
4685             disable fast_cmov
4686         ;;
4687     esac
4688
4689 fi
4690
4691 if [ "$cpu" != generic ]; then
4692     add_cflags  $cpuflags
4693     add_asflags $cpuflags
4694     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
4695 fi
4696
4697 # compiler sanity check
4698 check_exec <<EOF
4699 int main(void){ return 0; }
4700 EOF
4701 if test "$?" != 0; then
4702     echo "$cc is unable to create an executable file."
4703     if test -z "$cross_prefix" && ! enabled cross_compile ; then
4704         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
4705         echo "Only do this if you know what cross compiling means."
4706     fi
4707     die "C compiler test failed."
4708 fi
4709
4710 add_cppflags -D_ISOC99_SOURCE
4711 add_cxxflags -D__STDC_CONSTANT_MACROS
4712 check_cxxflags -std=c++11 || check_cxxflags -std=c++0x
4713
4714 # some compilers silently accept -std=c11, so we also need to check that the
4715 # version macro is defined properly
4716 if test_cflags_cc -std=c11 ctype.h "__STDC_VERSION__ >= 201112L"; then
4717     add_cflags -std=c11
4718 else
4719     check_cflags -std=c99
4720 fi
4721
4722 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
4723 #include <stdlib.h>
4724 EOF
4725 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
4726 #include <stdlib.h>
4727 EOF
4728
4729 add_host_cppflags -D_ISOC99_SOURCE
4730 check_host_cflags -std=c99
4731 check_host_cflags -Wall
4732 check_host_cflags $host_cflags_speed
4733
4734 check_64bit(){
4735     arch32=$1
4736     arch64=$2
4737     expr=$3
4738     check_code cc "" "int test[2*($expr) - 1]" &&
4739         subarch=$arch64 || subarch=$arch32
4740 }
4741
4742 case "$arch" in
4743     aarch64|alpha|ia64)
4744         spic=$shared
4745     ;;
4746     mips)
4747         check_64bit mips mips64 '_MIPS_SIM > 1'
4748         spic=$shared
4749     ;;
4750     parisc)
4751         check_64bit parisc parisc64 'sizeof(void *) > 4'
4752         spic=$shared
4753     ;;
4754     ppc)
4755         check_64bit ppc ppc64 'sizeof(void *) > 4'
4756         spic=$shared
4757     ;;
4758     s390)
4759         check_64bit s390 s390x 'sizeof(void *) > 4'
4760         spic=$shared
4761     ;;
4762     sparc)
4763         check_64bit sparc sparc64 'sizeof(void *) > 4'
4764         spic=$shared
4765     ;;
4766     x86)
4767         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
4768         # Treat x32 as x64 for now. Note it also needs spic=$shared
4769         test "$subarch" = "x86_32" && check_cpp_condition stddef.h 'defined(__x86_64__)' &&
4770             subarch=x86_64
4771         if test "$subarch" = "x86_64"; then
4772             spic=$shared
4773         fi
4774     ;;
4775     ppc)
4776         check_cc <<EOF && subarch="ppc64"
4777         int test[(int)sizeof(char*) - 7];
4778 EOF
4779     ;;
4780 esac
4781
4782 enable $subarch
4783 enabled spic && enable_weak pic
4784
4785 # OS specific
4786 case $target_os in
4787     aix)
4788         SHFLAGS=-shared
4789         add_cppflags '-I\$(SRC_PATH)/compat/aix'
4790         enabled shared && add_ldflags -Wl,-brtl
4791         ;;
4792     android)
4793         disable symver
4794         enable section_data_rel_ro
4795         SLIB_INSTALL_NAME='$(SLIBNAME)'
4796         SLIB_INSTALL_LINKS=
4797         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
4798         ;;
4799     haiku)
4800         prefix_default="/boot/common"
4801         network_extralibs="-lnetwork"
4802         host_extralibs=
4803         ;;
4804     sunos)
4805         SHFLAGS='-shared -Wl,-h,$$(@F)'
4806         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
4807         network_extralibs="-lsocket -lnsl"
4808         add_cppflags -D__EXTENSIONS__
4809         # When using suncc to build, the Solaris linker will mark
4810         # an executable with each instruction set encountered by
4811         # the Solaris assembler.  As our libraries contain their own
4812         # guards for processor-specific code, instead suppress
4813         # generation of the HWCAPS ELF section on Solaris x86 only.
4814         enabled_all suncc x86 &&
4815             echo "hwcap_1 = OVERRIDE;" > mapfile &&
4816             add_ldflags -Wl,-M,mapfile
4817         nm_default='nm -P -g'
4818         version_script='-M'
4819         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
4820         ;;
4821     netbsd)
4822         disable symver
4823         oss_indev_extralibs="-lossaudio"
4824         oss_outdev_extralibs="-lossaudio"
4825         enabled gcc || check_ldflags -Wl,-zmuldefs
4826         ;;
4827     openbsd|bitrig)
4828         disable symver
4829         SHFLAGS='-shared'
4830         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
4831         SLIB_INSTALL_LINKS=
4832         oss_indev_extralibs="-lossaudio"
4833         oss_outdev_extralibs="-lossaudio"
4834         ;;
4835     dragonfly)
4836         disable symver
4837         ;;
4838     freebsd)
4839         ;;
4840     bsd/os)
4841         add_extralibs -lpoll -lgnugetopt
4842         strip="strip -d"
4843         ;;
4844     darwin)
4845         enabled ppc && add_asflags -force_cpusubtype_ALL
4846         install_name_dir_default='$(SHLIBDIR)'
4847         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(INSTALL_NAME_DIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
4848         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
4849         strip="${strip} -x"
4850         add_ldflags -Wl,-dynamic,-search_paths_first
4851         SLIBSUF=".dylib"
4852         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
4853         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
4854         objformat="macho"
4855         enabled x86_64 && objformat="macho64"
4856         enabled_any pic shared x86_64 ||
4857             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
4858         check_header dispatch/dispatch.h &&
4859             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
4860         version_script='-exported_symbols_list'
4861         VERSION_SCRIPT_POSTPROCESS_CMD='tr " " "\n" | sed -n /global:/,/local:/p | grep ";" | tr ";" "\n" | sed -E "s/(.+)/_\1/g" | sed -E "s/(.+[^*])$$$$/\1*/"'
4862         ;;
4863     msys*)
4864         die "Native MSYS builds are discouraged, please use the MINGW environment."
4865         ;;