Merge commit 'ac7bfd69678f3966e38debdb27f4bde94dc0345c'
[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:$PATH
58
59 show_help(){
60     cat <<EOF
61 Usage: configure [options]
62 Options: [defaults in brackets after descriptions]
63
64 Help options:
65   --help                   print this message
66   --list-decoders          show all available decoders
67   --list-encoders          show all available encoders
68   --list-hwaccels          show all available hardware accelerators
69   --list-demuxers          show all available demuxers
70   --list-muxers            show all available muxers
71   --list-parsers           show all available parsers
72   --list-protocols         show all available protocols
73   --list-bsfs              show all available bitstream filters
74   --list-indevs            show all available input devices
75   --list-outdevs           show all available output devices
76   --list-filters           show all available filters
77
78 Standard options:
79   --logfile=FILE           log tests and output to FILE [config.log]
80   --disable-logging        do not log configure debug information
81   --fatal-warnings         fail if any configure warning is generated
82   --prefix=PREFIX          install in PREFIX [$prefix]
83   --bindir=DIR             install binaries in DIR [PREFIX/bin]
84   --datadir=DIR            install data files in DIR [PREFIX/share/ffmpeg]
85   --docdir=DIR             install documentation in DIR [PREFIX/share/doc/ffmpeg]
86   --libdir=DIR             install libs in DIR [PREFIX/lib]
87   --shlibdir=DIR           install shared libs in DIR [LIBDIR]
88   --incdir=DIR             install includes in DIR [PREFIX/include]
89   --mandir=DIR             install man page in DIR [PREFIX/share/man]
90   --pkgconfigdir=DIR       install pkg-config files in DIR [LIBDIR/pkgconfig]
91   --enable-rpath           use rpath to allow installing libraries in paths
92                            not part of the dynamic linker search path
93                            use rpath when linking programs [USE WITH CARE]
94   --install-name-dir=DIR   Darwin directory name for installed targets
95
96 Licensing options:
97   --enable-gpl             allow use of GPL code, the resulting libs
98                            and binaries will be under GPL [no]
99   --enable-version3        upgrade (L)GPL to version 3 [no]
100   --enable-nonfree         allow use of nonfree code, the resulting libs
101                            and binaries will be unredistributable [no]
102
103 Configuration options:
104   --disable-static         do not build static libraries [no]
105   --enable-shared          build shared libraries [no]
106   --enable-small           optimize for size instead of speed
107   --disable-runtime-cpudetect disable detecting cpu capabilities at runtime (smaller binary)
108   --enable-gray            enable full grayscale support (slower color)
109   --disable-swscale-alpha  disable alpha channel support in swscale
110   --disable-all            disable building components, libraries and programs
111   --enable-incompatible-libav-abi enable incompatible Libav fork ABI [no]
112   --enable-raise-major     increase major version numbers in sonames [no]
113
114 Program options:
115   --disable-programs       do not build command line programs
116   --disable-ffmpeg         disable ffmpeg build
117   --disable-ffplay         disable ffplay build
118   --disable-ffprobe        disable ffprobe build
119   --disable-ffserver       disable ffserver build
120
121 Documentation options:
122   --disable-doc            do not build documentation
123   --disable-htmlpages      do not build HTML documentation pages
124   --disable-manpages       do not build man documentation pages
125   --disable-podpages       do not build POD documentation pages
126   --disable-txtpages       do not build text documentation pages
127
128 Component options:
129   --disable-avdevice       disable libavdevice build
130   --disable-avcodec        disable libavcodec build
131   --disable-avformat       disable libavformat build
132   --disable-swresample     disable libswresample build
133   --disable-swscale        disable libswscale build
134   --disable-postproc       disable libpostproc build
135   --disable-avfilter       disable libavfilter build
136   --enable-avresample      enable libavresample build [no]
137   --disable-pthreads       disable pthreads [autodetect]
138   --disable-w32threads     disable Win32 threads [autodetect]
139   --disable-os2threads     disable OS/2 threads [autodetect]
140   --disable-network        disable network support [no]
141   --disable-dct            disable DCT code
142   --disable-dwt            disable DWT code
143   --disable-error-resilience disable error resilience code
144   --disable-lsp            disable LSP code
145   --disable-lzo            disable LZO decoder code
146   --disable-mdct           disable MDCT code
147   --disable-rdft           disable RDFT code
148   --disable-fft            disable FFT code
149   --disable-faan           disable floating point AAN (I)DCT code
150   --disable-pixelutils     disable pixel utils in libavutil
151
152 Individual component options:
153   --disable-everything     disable all components listed below
154   --disable-encoder=NAME   disable encoder NAME
155   --enable-encoder=NAME    enable encoder NAME
156   --disable-encoders       disable all encoders
157   --disable-decoder=NAME   disable decoder NAME
158   --enable-decoder=NAME    enable decoder NAME
159   --disable-decoders       disable all decoders
160   --disable-hwaccel=NAME   disable hwaccel NAME
161   --enable-hwaccel=NAME    enable hwaccel NAME
162   --disable-hwaccels       disable all hwaccels
163   --disable-muxer=NAME     disable muxer NAME
164   --enable-muxer=NAME      enable muxer NAME
165   --disable-muxers         disable all muxers
166   --disable-demuxer=NAME   disable demuxer NAME
167   --enable-demuxer=NAME    enable demuxer NAME
168   --disable-demuxers       disable all demuxers
169   --enable-parser=NAME     enable parser NAME
170   --disable-parser=NAME    disable parser NAME
171   --disable-parsers        disable all parsers
172   --enable-bsf=NAME        enable bitstream filter NAME
173   --disable-bsf=NAME       disable bitstream filter NAME
174   --disable-bsfs           disable all bitstream filters
175   --enable-protocol=NAME   enable protocol NAME
176   --disable-protocol=NAME  disable protocol NAME
177   --disable-protocols      disable all protocols
178   --enable-indev=NAME      enable input device NAME
179   --disable-indev=NAME     disable input device NAME
180   --disable-indevs         disable input devices
181   --enable-outdev=NAME     enable output device NAME
182   --disable-outdev=NAME    disable output device NAME
183   --disable-outdevs        disable output devices
184   --disable-devices        disable all devices
185   --enable-filter=NAME     enable filter NAME
186   --disable-filter=NAME    disable filter NAME
187   --disable-filters        disable all filters
188
189 External library support:
190
191   Using any of the following switches will allow FFmpeg to link to the
192   corresponding external library. All the components depending on that library
193   will become enabled, if all their other dependencies are met and they are not
194   explicitly disabled. E.g. --enable-libwavpack will enable linking to
195   libwavpack and allow the libwavpack encoder to be built, unless it is
196   specifically disabled with --disable-encoder=libwavpack.
197
198   Note that only the system libraries are auto-detected. All the other external
199   libraries must be explicitly enabled.
200
201   Also note that the following help text describes the purpose of the libraries
202   themselves, not all their features will necessarily be usable by FFmpeg.
203
204   --enable-avisynth        enable reading of AviSynth script files [no]
205   --disable-bzlib          disable bzlib [autodetect]
206   --enable-chromaprint     enable audio fingerprinting with chromaprint [no]
207   --enable-frei0r          enable frei0r video filtering [no]
208   --enable-gcrypt          enable gcrypt, needed for rtmp(t)e support
209                            if openssl, librtmp or gmp is not used [no]
210   --enable-gmp             enable gmp, needed for rtmp(t)e support
211                            if openssl or librtmp is not used [no]
212   --enable-gnutls          enable gnutls, needed for https support
213                            if openssl is not used [no]
214   --disable-iconv          disable iconv [autodetect]
215   --enable-jni             enable JNI support [no]
216   --enable-ladspa          enable LADSPA audio filtering [no]
217   --enable-libass          enable libass subtitles rendering,
218                            needed for subtitles and ass filter [no]
219   --enable-libbluray       enable BluRay reading using libbluray [no]
220   --enable-libbs2b         enable bs2b DSP library [no]
221   --enable-libcaca         enable textual display using libcaca [no]
222   --enable-libcelt         enable CELT decoding via libcelt [no]
223   --enable-libcdio         enable audio CD grabbing with libcdio [no]
224   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
225                            and libraw1394 [no]
226   --enable-libebur128      enable libebur128 for EBU R128 measurement,
227                            needed for loudnorm filter [no]
228   --enable-libfaac         enable AAC encoding via libfaac [no]
229   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
230   --enable-libflite        enable flite (voice synthesis) support via libflite [no]
231   --enable-libfontconfig   enable libfontconfig, useful for drawtext filter [no]
232   --enable-libfreetype     enable libfreetype, needed for drawtext filter [no]
233   --enable-libfribidi      enable libfribidi, improves drawtext filter [no]
234   --enable-libgme          enable Game Music Emu via libgme [no]
235   --enable-libgsm          enable GSM de/encoding via libgsm [no]
236   --enable-libiec61883     enable iec61883 via libiec61883 [no]
237   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
238   --enable-libkvazaar      enable HEVC encoding via libkvazaar [no]
239   --enable-libmodplug      enable ModPlug via libmodplug [no]
240   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
241   --enable-libnut          enable NUT (de)muxing via libnut,
242                            native (de)muxer exists [no]
243   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
244   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
245   --enable-libopencv       enable video filtering via libopencv [no]
246   --enable-libopenh264     enable H.264 encoding via OpenH264 [no]
247   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
248   --enable-libopenmpt      enable decoding tracked files via libopenmpt [no]
249   --enable-libopus         enable Opus de/encoding via libopus [no]
250   --enable-libpulse        enable Pulseaudio input via libpulse [no]
251   --enable-librubberband   enable rubberband needed for rubberband filter [no]
252   --enable-librtmp         enable RTMP[E] support via librtmp [no]
253   --enable-libschroedinger enable Dirac de/encoding via libschroedinger [no]
254   --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
255   --enable-libsmbclient    enable Samba protocol via libsmbclient [no]
256   --enable-libsnappy       enable Snappy compression, needed for hap encoding [no]
257   --enable-libsoxr         enable Include libsoxr resampling [no]
258   --enable-libspeex        enable Speex de/encoding via libspeex [no]
259   --enable-libssh          enable SFTP protocol via libssh [no]
260   --enable-libtesseract    enable Tesseract, needed for ocr filter [no]
261   --enable-libtheora       enable Theora encoding via libtheora [no]
262   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
263   --enable-libv4l2         enable libv4l2/v4l-utils [no]
264   --enable-libvidstab      enable video stabilization using vid.stab [no]
265   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
266   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
267                            native implementation exists [no]
268   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
269   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
270   --enable-libwebp         enable WebP encoding via libwebp [no]
271   --enable-libx264         enable H.264 encoding via x264 [no]
272   --enable-libx265         enable HEVC encoding via x265 [no]
273   --enable-libxavs         enable AVS encoding via xavs [no]
274   --enable-libxcb          enable X11 grabbing using XCB [autodetect]
275   --enable-libxcb-shm      enable X11 grabbing shm communication [autodetect]
276   --enable-libxcb-xfixes   enable X11 grabbing mouse rendering [autodetect]
277   --enable-libxcb-shape    enable X11 grabbing shape rendering [autodetect]
278   --enable-libxvid         enable Xvid encoding via xvidcore,
279                            native MPEG-4/Xvid encoder exists [no]
280   --enable-libzimg         enable z.lib, needed for zscale filter [no]
281   --enable-libzmq          enable message passing via libzmq [no]
282   --enable-libzvbi         enable teletext support via libzvbi [no]
283   --disable-lzma           disable lzma [autodetect]
284   --enable-decklink        enable Blackmagic DeckLink I/O support [no]
285   --enable-mediacodec      enable Android MediaCodec support [no]
286   --enable-netcdf          enable NetCDF, needed for sofalizer filter [no]
287   --enable-openal          enable OpenAL 1.1 capture support [no]
288   --enable-opencl          enable OpenCL code
289   --enable-opengl          enable OpenGL rendering [no]
290   --enable-openssl         enable openssl, needed for https support
291                            if gnutls is not used [no]
292   --disable-schannel       disable SChannel SSP, needed for TLS support on
293                            Windows if openssl and gnutls are not used [autodetect]
294   --disable-sdl2           disable sdl2 [autodetect]
295   --disable-securetransport disable Secure Transport, needed for TLS support
296                            on OSX if openssl and gnutls are not used [autodetect]
297   --enable-x11grab         enable X11 grabbing (legacy) [no]
298   --disable-xlib           disable xlib [autodetect]
299   --disable-zlib           disable zlib [autodetect]
300
301   The following libraries provide various hardware acceleration features:
302   --disable-audiotoolbox   disable Apple AudioToolbox code [autodetect]
303   --enable-cuda            enable dynamically linked Nvidia CUDA code [no]
304   --enable-cuvid           enable Nvidia CUVID support [autodetect]
305   --disable-d3d11va        disable Microsoft Direct3D 11 video acceleration code [autodetect]
306   --disable-dxva2          disable Microsoft DirectX 9 video acceleration code [autodetect]
307   --enable-libmfx          enable Intel MediaSDK (AKA Quick Sync Video) code via libmfx [no]
308   --enable-libnpp          enable Nvidia Performance Primitives-based code [no]
309   --enable-mmal            enable Broadcom Multi-Media Abstraction Layer (Raspberry Pi) via MMAL [no]
310   --disable-nvenc          disable Nvidia video encoding code [autodetect]
311   --enable-omx             enable OpenMAX IL code [no]
312   --enable-omx-rpi         enable OpenMAX IL code for Raspberry Pi [no]
313   --disable-vaapi          disable Video Acceleration API (mainly Unix/Intel) code [autodetect]
314   --disable-vda            disable Apple Video Decode Acceleration code [autodetect]
315   --disable-vdpau          disable Nvidia Video Decode and Presentation API for Unix code [autodetect]
316   --disable-videotoolbox   disable VideoToolbox code [autodetect]
317
318 Toolchain options:
319   --arch=ARCH              select architecture [$arch]
320   --cpu=CPU                select the minimum required CPU (affects
321                            instruction selection, may crash on older CPUs)
322   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
323   --progs-suffix=SUFFIX    program name suffix []
324   --enable-cross-compile   assume a cross-compiler is used
325   --sysroot=PATH           root of cross-build tree
326   --sysinclude=PATH        location of cross-build system headers
327   --target-os=OS           compiler targets OS [$target_os]
328   --target-exec=CMD        command to run executables on target
329   --target-path=DIR        path to view of build directory on target
330   --target-samples=DIR     path to samples directory on target
331   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
332   --toolchain=NAME         set tool defaults according to NAME
333   --nm=NM                  use nm tool NM [$nm_default]
334   --ar=AR                  use archive tool AR [$ar_default]
335   --as=AS                  use assembler AS [$as_default]
336   --ln_s=LN_S              use symbolic link tool LN_S [$ln_s_default]
337   --strip=STRIP            use strip tool STRIP [$strip_default]
338   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
339   --yasmexe=EXE            use yasm-compatible assembler EXE [$yasmexe_default]
340   --cc=CC                  use C compiler CC [$cc_default]
341   --cxx=CXX                use C compiler CXX [$cxx_default]
342   --objcc=OCC              use ObjC compiler OCC [$cc_default]
343   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
344   --ld=LD                  use linker LD [$ld_default]
345   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
346   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
347   --ranlib=RANLIB          use ranlib RANLIB [$ranlib_default]
348   --doxygen=DOXYGEN        use DOXYGEN to generate API doc [$doxygen_default]
349   --host-cc=HOSTCC         use host C compiler HOSTCC
350   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
351   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
352   --host-ld=HOSTLD         use host linker HOSTLD
353   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
354   --host-libs=HLIBS        use libs HLIBS when linking for host
355   --host-os=OS             compiler host OS [$target_os]
356   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
357   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
358   --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
359   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
360   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
361   --extra-ldlibflags=ELDFLAGS add ELDFLAGS to LDLIBFLAGS [$LDLIBFLAGS]
362   --extra-libs=ELIBS       add ELIBS [$ELIBS]
363   --extra-version=STRING   version string suffix []
364   --optflags=OPTFLAGS      override optimization-related compiler flags
365   --build-suffix=SUFFIX    library name suffix []
366   --enable-pic             build position-independent code
367   --enable-thumb           compile for Thumb instruction set
368   --enable-lto             use link-time optimization
369   --env="ENV=override"     override the environment variables
370
371 Advanced options (experts only):
372   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
373   --custom-allocator=NAME  use a supported custom allocator
374   --disable-symver         disable symbol versioning
375   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
376   --disable-safe-bitstream-reader
377                            disable buffer boundary checking in bitreaders
378                            (faster, but may crash)
379   --enable-memalign-hack   emulate memalign, interferes with memory debuggers
380   --sws-max-filter-size=N  the max filter size swscale uses [$sws_max_filter_size_default]
381
382 Optimization options (experts only):
383   --disable-asm            disable all assembly optimizations
384   --disable-altivec        disable AltiVec optimizations
385   --disable-vsx            disable VSX optimizations
386   --disable-power8         disable POWER8 optimizations
387   --disable-amd3dnow       disable 3DNow! optimizations
388   --disable-amd3dnowext    disable 3DNow! extended optimizations
389   --disable-mmx            disable MMX optimizations
390   --disable-mmxext         disable MMXEXT optimizations
391   --disable-sse            disable SSE optimizations
392   --disable-sse2           disable SSE2 optimizations
393   --disable-sse3           disable SSE3 optimizations
394   --disable-ssse3          disable SSSE3 optimizations
395   --disable-sse4           disable SSE4 optimizations
396   --disable-sse42          disable SSE4.2 optimizations
397   --disable-avx            disable AVX optimizations
398   --disable-xop            disable XOP optimizations
399   --disable-fma3           disable FMA3 optimizations
400   --disable-fma4           disable FMA4 optimizations
401   --disable-avx2           disable AVX2 optimizations
402   --disable-aesni          disable AESNI optimizations
403   --disable-armv5te        disable armv5te optimizations
404   --disable-armv6          disable armv6 optimizations
405   --disable-armv6t2        disable armv6t2 optimizations
406   --disable-vfp            disable VFP optimizations
407   --disable-neon           disable NEON optimizations
408   --disable-inline-asm     disable use of inline assembly
409   --disable-yasm           disable use of nasm/yasm assembly
410   --disable-mipsdsp        disable MIPS DSP ASE R1 optimizations
411   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
412   --disable-msa            disable MSA optimizations
413   --disable-mipsfpu        disable floating point MIPS optimizations
414   --disable-mmi            disable Loongson SIMD optimizations
415   --disable-fast-unaligned consider unaligned accesses slow
416
417 Developer options (useful when working on FFmpeg itself):
418   --disable-debug          disable debugging symbols
419   --enable-debug=LEVEL     set the debug level [$debuglevel]
420   --disable-optimizations  disable compiler optimizations
421   --enable-extra-warnings  enable more compiler warnings
422   --disable-stripping      disable stripping of executables and shared libraries
423   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
424                            2 causes a slowdown at runtime.
425   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
426   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
427                            leaks and errors, using the specified valgrind binary.
428                            Cannot be combined with --target-exec
429   --enable-ftrapv          Trap arithmetic overflows
430   --samples=PATH           location of test samples for FATE, if not set use
431                            \$FATE_SAMPLES at make invocation time.
432   --enable-neon-clobber-test check NEON registers for clobbering (should be
433                            used only for debugging purposes)
434   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
435                            should be used only for debugging purposes)
436   --enable-random          randomly enable/disable components
437   --disable-random
438   --enable-random=LIST     randomly enable/disable specific components or
439   --disable-random=LIST    component groups. LIST is a comma-separated list
440                            of NAME[:PROB] entries where NAME is a component
441                            (group) and PROB the probability associated with
442                            NAME (default 0.5).
443   --random-seed=VALUE      seed value for --enable/disable-random
444   --disable-valgrind-backtrace do not print a backtrace under Valgrind
445                            (only applies to --disable-optimizations builds)
446
447 NOTE: Object files are built at the place where configure is launched.
448 EOF
449   exit 0
450 }
451
452 quotes='""'
453 if test -t 1 && which tput >/dev/null 2>&1; then
454     ncolors=$(tput colors)
455     if test -n "$ncolors" && test $ncolors -ge 8; then
456         bold_color=$(tput bold)
457         warn_color=$(tput setaf 3)
458         error_color=$(tput setaf 1)
459         reset_color=$(tput sgr0)
460     fi
461     # 72 used instead of 80 since that's the default of pr
462     ncols=$(tput cols)
463 fi
464 : ${ncols:=72}
465
466 log(){
467     echo "$@" >> $logfile
468 }
469
470 log_file(){
471     log BEGIN $1
472     pr -n -t $1 >> $logfile
473     log END $1
474 }
475
476 warn(){
477     log "WARNING: $*"
478     WARNINGS="${WARNINGS}WARNING: $*\n"
479 }
480
481 die(){
482     log "$@"
483     echo "$error_color$bold_color$@$reset_color"
484     cat <<EOF
485
486 If you think configure made a mistake, make sure you are using the latest
487 version from Git.  If the latest version fails, report the problem to the
488 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
489 EOF
490     if disabled logging; then
491         cat <<EOF
492 Rerun configure with logging enabled (do not use --disable-logging), and
493 include the log this produces with your report.
494 EOF
495     else
496         cat <<EOF
497 Include the log file "$logfile" produced by configure as this will help
498 solve the problem.
499 EOF
500     fi
501     exit 1
502 }
503
504 # Avoid locale weirdness, besides we really just want to translate ASCII.
505 toupper(){
506     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
507 }
508
509 tolower(){
510     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
511 }
512
513 c_escape(){
514     echo "$*" | sed 's/["\\]/\\\0/g'
515 }
516
517 sh_quote(){
518     v=$(echo "$1" | sed "s/'/'\\\\''/g")
519     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
520     echo "$v"
521 }
522
523 cleanws(){
524     echo "$@" | sed 's/^ *//;s/[[:space:]][[:space:]]*/ /g;s/ *$//'
525 }
526
527 filter(){
528     pat=$1
529     shift
530     for v; do
531         eval "case $v in $pat) echo $v ;; esac"
532     done
533 }
534
535 filter_out(){
536     pat=$1
537     shift
538     for v; do
539         eval "case $v in $pat) ;; *) echo $v ;; esac"
540     done
541 }
542
543 map(){
544     m=$1
545     shift
546     for v; do eval $m; done
547 }
548
549 add_suffix(){
550     suffix=$1
551     shift
552     for v; do echo ${v}${suffix}; done
553 }
554
555 set_all(){
556     value=$1
557     shift
558     for var in $*; do
559         eval $var=$value
560     done
561 }
562
563 set_weak(){
564     value=$1
565     shift
566     for var; do
567         eval : \${$var:=$value}
568     done
569 }
570
571 sanitize_var_name(){
572     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
573 }
574
575 set_safe(){
576     var=$1
577     shift
578     eval $(sanitize_var_name "$var")='$*'
579 }
580
581 get_safe(){
582     eval echo \$$(sanitize_var_name "$1")
583 }
584
585 pushvar(){
586     for pvar in $*; do
587         eval level=\${${pvar}_level:=0}
588         eval ${pvar}_${level}="\$$pvar"
589         eval ${pvar}_level=$(($level+1))
590     done
591 }
592
593 popvar(){
594     for pvar in $*; do
595         eval level=\${${pvar}_level:-0}
596         test $level = 0 && continue
597         eval level=$(($level-1))
598         eval $pvar="\${${pvar}_${level}}"
599         eval ${pvar}_level=$level
600         eval unset ${pvar}_${level}
601     done
602 }
603
604 enable(){
605     set_all yes $*
606 }
607
608 disable(){
609     set_all no $*
610 }
611
612 enable_weak(){
613     set_weak yes $*
614 }
615
616 disable_weak(){
617     set_weak no $*
618 }
619
620 enable_safe(){
621     for var; do
622         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
623     done
624 }
625
626 disable_safe(){
627     for var; do
628         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
629     done
630 }
631
632 do_enable_deep(){
633     for var; do
634         enabled $var && continue
635         eval sel="\$${var}_select"
636         eval sgs="\$${var}_suggest"
637         pushvar var sgs
638         enable_deep $sel
639         popvar sgs
640         enable_deep_weak $sgs
641         popvar var
642     done
643 }
644
645 enable_deep(){
646     do_enable_deep $*
647     enable $*
648 }
649
650 enable_deep_weak(){
651     for var; do
652         disabled $var && continue
653         pushvar var
654         do_enable_deep $var
655         popvar var
656         enable_weak $var
657     done
658 }
659
660 enabled(){
661     test "${1#!}" = "$1" && op='=' || op=!=
662     eval test "x\$${1#!}" $op "xyes"
663 }
664
665 disabled(){
666     test "${1#!}" = "$1" && op='=' || op=!=
667     eval test "x\$${1#!}" $op "xno"
668 }
669
670 enabled_all(){
671     for opt; do
672         enabled $opt || return 1
673     done
674 }
675
676 disabled_all(){
677     for opt; do
678         disabled $opt || return 1
679     done
680 }
681
682 enabled_any(){
683     for opt; do
684         enabled $opt && return 0
685     done
686 }
687
688 disabled_any(){
689     for opt; do
690         disabled $opt && return 0
691     done
692     return 1
693 }
694
695 set_default(){
696     for opt; do
697         eval : \${$opt:=\$${opt}_default}
698     done
699 }
700
701 is_in(){
702     value=$1
703     shift
704     for var in $*; do
705         [ $var = $value ] && return 0
706     done
707     return 1
708 }
709
710 do_check_deps(){
711     for cfg; do
712         cfg="${cfg#!}"
713         enabled ${cfg}_checking && die "Circular dependency for $cfg."
714         disabled ${cfg}_checking && continue
715         enable ${cfg}_checking
716         append allopts $cfg
717
718         eval dep_all="\$${cfg}_deps"
719         eval dep_any="\$${cfg}_deps_any"
720         eval dep_sel="\$${cfg}_select"
721         eval dep_sgs="\$${cfg}_suggest"
722         eval dep_ifa="\$${cfg}_if"
723         eval dep_ifn="\$${cfg}_if_any"
724
725         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
726         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
727         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
728
729         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
730         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
731         enabled_all  $dep_all || disable $cfg
732         enabled_any  $dep_any || disable $cfg
733         disabled_any $dep_sel && disable $cfg
734
735         if enabled $cfg; then
736             enable_deep $dep_sel
737             enable_deep_weak $dep_sgs
738         fi
739
740         disable ${cfg}_checking
741     done
742 }
743
744 check_deps(){
745     unset allopts
746
747     do_check_deps "$@"
748
749     for cfg in $allopts; do
750         enabled $cfg || continue
751         eval dep_extralibs="\$${cfg}_extralibs"
752         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
753     done
754 }
755
756 print_config(){
757     pfx=$1
758     files=$2
759     shift 2
760     map 'eval echo "$v \${$v:-no}"' "$@" |
761     awk "BEGIN { split(\"$files\", files) }
762         {
763             c = \"$pfx\" toupper(\$1);
764             v = \$2;
765             sub(/yes/, 1, v);
766             sub(/no/,  0, v);
767             for (f in files) {
768                 file = files[f];
769                 if (file ~ /\\.h\$/) {
770                     printf(\"#define %s %d\\n\", c, v) >>file;
771                 } else if (file ~ /\\.asm\$/) {
772                     printf(\"%%define %s %d\\n\", c, v) >>file;
773                 } else if (file ~ /\\.mak\$/) {
774                     n = -v ? \"\" : \"!\";
775                     printf(\"%s%s=yes\\n\", n, c) >>file;
776                 } else if (file ~ /\\.texi\$/) {
777                     pre = -v ? \"\" : \"@c \";
778                     yesno = \$2;
779                     c2 = tolower(c);
780                     gsub(/_/, \"-\", c2);
781                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
782                 }
783             }
784         }"
785 }
786
787 print_enabled(){
788     suf=$1
789     shift
790     for v; do
791         enabled $v && printf "%s\n" ${v%$suf}
792     done
793 }
794
795 append(){
796     var=$1
797     shift
798     eval "$var=\"\$$var $*\""
799 }
800
801 prepend(){
802     var=$1
803     shift
804     eval "$var=\"$* \$$var\""
805 }
806
807 unique(){
808     var=$1
809     uniq_list=""
810     for tok in $(eval echo \$$var); do
811         uniq_list="$(filter_out $tok $uniq_list) $tok"
812     done
813     eval "$var=\"${uniq_list}\""
814 }
815
816 add_cppflags(){
817     append CPPFLAGS "$@"
818 }
819
820 add_cflags(){
821     append CFLAGS $($cflags_filter "$@")
822 }
823
824 add_cxxflags(){
825     append CXXFLAGS $($cflags_filter "$@")
826 }
827
828 add_asflags(){
829     append ASFLAGS $($asflags_filter "$@")
830 }
831
832 add_objcflags(){
833     append OBJCFLAGS $($objcflags_filter "$@")
834 }
835
836 add_ldflags(){
837     append LDFLAGS $($ldflags_filter "$@")
838 }
839
840 add_ldexeflags(){
841     append LDEXEFLAGS $($ldflags_filter "$@")
842 }
843
844 add_ldlibflags(){
845     append LDLIBFLAGS $($ldflags_filter "$@")
846 }
847
848 add_stripflags(){
849     append ASMSTRIPFLAGS "$@"
850 }
851
852 add_extralibs(){
853     prepend extralibs $($ldflags_filter "$@")
854 }
855
856 add_host_cppflags(){
857     append host_cppflags "$@"
858 }
859
860 add_host_cflags(){
861     append host_cflags $($host_cflags_filter "$@")
862 }
863
864 add_host_ldflags(){
865     append host_ldflags $($host_ldflags_filter "$@")
866 }
867
868 add_compat(){
869     append compat_objs $1
870     shift
871     map 'add_cppflags -D$v' "$@"
872 }
873
874 check_cmd(){
875     log "$@"
876     "$@" >> $logfile 2>&1
877 }
878
879 check_stat(){
880     log check_stat "$@"
881     stat "$1" >> $logfile 2>&1
882 }
883
884 cc_o(){
885     eval printf '%s\\n' $CC_O
886 }
887
888 cc_e(){
889     eval printf '%s\\n' $CC_E
890 }
891
892 check_cc(){
893     log check_cc "$@"
894     cat > $TMPC
895     log_file $TMPC
896     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
897 }
898
899 check_cxx(){
900     log check_cxx "$@"
901     cat > $TMPCPP
902     log_file $TMPCPP
903     check_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
904 }
905
906 check_objcc(){
907     log check_objcc "$@"
908     cat > $TMPM
909     log_file $TMPM
910     check_cmd $objcc -Werror=missing-prototypes $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPM
911 }
912
913 check_cpp(){
914     log check_cpp "$@"
915     cat > $TMPC
916     log_file $TMPC
917     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
918 }
919
920 as_o(){
921     eval printf '%s\\n' $AS_O
922 }
923
924 check_as(){
925     log check_as "$@"
926     cat > $TMPS
927     log_file $TMPS
928     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
929 }
930
931 check_inline_asm(){
932     log check_inline_asm "$@"
933     name="$1"
934     code="$2"
935     shift 2
936     disable $name
937     check_cc "$@" <<EOF && enable $name
938 void foo(void){ __asm__ volatile($code); }
939 EOF
940 }
941
942 check_inline_asm_flags(){
943     log check_inline_asm_flags "$@"
944     name="$1"
945     code="$2"
946     flags=''
947     shift 2
948     while [ "$1" != "" ]; do
949       append flags $1
950       shift
951     done;
952     disable $name
953     cat > $TMPC <<EOF
954 void foo(void){ __asm__ volatile($code); }
955 EOF
956     log_file $TMPC
957     check_cmd $cc $CPPFLAGS $CFLAGS $flags "$@" $CC_C $(cc_o $TMPO) $TMPC &&
958     enable $name && add_cflags $flags && add_asflags $flags && add_ldflags $flags
959 }
960
961 check_insn(){
962     log check_insn "$@"
963     check_inline_asm ${1}_inline "\"$2\""
964     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
965 }
966
967 check_yasm(){
968     log check_yasm "$@"
969     echo "$1" > $TMPS
970     log_file $TMPS
971     shift 1
972     check_cmd $yasmexe $YASMFLAGS -Werror "$@" -o $TMPO $TMPS
973 }
974
975 ld_o(){
976     eval printf '%s\\n' $LD_O
977 }
978
979 check_ld(){
980     log check_ld "$@"
981     type=$1
982     shift 1
983     flags=$(filter_out '-l*|*.so' $@)
984     libs=$(filter '-l*|*.so' $@)
985     check_$type $($cflags_filter $flags) || return
986     flags=$($ldflags_filter $flags)
987     libs=$($ldflags_filter $libs)
988     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
989 }
990
991 print_include(){
992     hdr=$1
993     test "${hdr%.h}" = "${hdr}" &&
994         echo "#include $hdr"    ||
995         echo "#include <$hdr>"
996 }
997
998 check_code(){
999     log check_code "$@"
1000     check=$1
1001     headers=$2
1002     code=$3
1003     shift 3
1004     {
1005         for hdr in $headers; do
1006             print_include $hdr
1007         done
1008         echo "int main(void) { $code; return 0; }"
1009     } | check_$check "$@"
1010 }
1011
1012 check_cppflags(){
1013     log check_cppflags "$@"
1014     check_cc "$@" <<EOF && append CPPFLAGS "$@"
1015 int x;
1016 EOF
1017 }
1018
1019 test_cflags(){
1020     log test_cflags "$@"
1021     set -- $($cflags_filter "$@")
1022     check_cc "$@" <<EOF
1023 int x;
1024 EOF
1025 }
1026
1027 check_cflags(){
1028     log check_cflags "$@"
1029     test_cflags "$@" && add_cflags "$@"
1030 }
1031
1032 check_cxxflags(){
1033     log check_cxxflags "$@"
1034     set -- $($cflags_filter "$@")
1035     check_cxx "$@" <<EOF && append CXXFLAGS "$@"
1036 int x;
1037 EOF
1038 }
1039
1040 test_objcflags(){
1041     log test_cflags "$@"
1042     set -- $($cflags_filter "$@")
1043     check_objcc "$@" <<EOF
1044 int x;
1045 EOF
1046 }
1047
1048 check_objcflags(){
1049     log check_cflags "$@"
1050     test_objcflags "$@" && add_objcflags "$@"
1051 }
1052
1053 test_ldflags(){
1054     log test_ldflags "$@"
1055     check_ld "cc" "$@" <<EOF
1056 int main(void){ return 0; }
1057 EOF
1058 }
1059
1060 check_ldflags(){
1061     log check_ldflags "$@"
1062     test_ldflags "$@" && add_ldflags "$@"
1063 }
1064
1065 test_stripflags(){
1066     log test_stripflags "$@"
1067     # call check_cc to get a fresh TMPO
1068     check_cc <<EOF
1069 int main(void) { return 0; }
1070 EOF
1071     check_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
1072 }
1073
1074 check_stripflags(){
1075     log check_stripflags "$@"
1076     test_stripflags "$@" && add_stripflags "$@"
1077 }
1078
1079 check_header(){
1080     log check_header "$@"
1081     header=$1
1082     shift
1083     disable_safe $header
1084     check_cpp "$@" <<EOF && enable_safe $header
1085 #include <$header>
1086 int x;
1087 EOF
1088 }
1089
1090 check_header_objcc(){
1091     log check_header_objcc "$@"
1092     rm -f -- "$TMPO"
1093     header=$1
1094     shift
1095     disable_safe $header
1096     {
1097        echo "#include <$header>"
1098        echo "int main(void) { return 0; }"
1099     } | check_objcc && check_stat "$TMPO" && enable_safe $headers
1100 }
1101
1102 check_func(){
1103     log check_func "$@"
1104     func=$1
1105     shift
1106     disable $func
1107     check_ld "cc" "$@" <<EOF && enable $func
1108 extern int $func();
1109 int main(void){ $func(); }
1110 EOF
1111 }
1112
1113 check_complexfunc(){
1114     log check_complexfunc "$@"
1115     func=$1
1116     narg=$2
1117     shift 2
1118     test $narg = 2 && args="f, g" || args="f * I"
1119     disable $func
1120     check_ld "cc" "$@" <<EOF && enable $func
1121 #include <complex.h>
1122 #include <math.h>
1123 float foo(complex float f, complex float g) { return $func($args); }
1124 int main(void){ return (int) foo; }
1125 EOF
1126 }
1127
1128 check_mathfunc(){
1129     log check_mathfunc "$@"
1130     func=$1
1131     narg=$2
1132     shift 2
1133     test $narg = 2 && args="f, g" || args="f"
1134     disable $func
1135     check_ld "cc" "$@" <<EOF && enable $func
1136 #include <math.h>
1137 float foo(float f, float g) { return $func($args); }
1138 int main(void){ return (int) foo; }
1139 EOF
1140 }
1141
1142 check_func_headers(){
1143     log check_func_headers "$@"
1144     headers=$1
1145     funcs=$2
1146     shift 2
1147     {
1148         for hdr in $headers; do
1149             print_include $hdr
1150         done
1151         for func in $funcs; do
1152             echo "long check_$func(void) { return (long) $func; }"
1153         done
1154         echo "int main(void) { return 0; }"
1155     } | check_ld "cc" "$@" && enable $funcs && enable_safe $headers
1156 }
1157
1158 check_class_headers_cpp(){
1159     log check_class_headers_cpp "$@"
1160     headers=$1
1161     classes=$2
1162     shift 2
1163     {
1164         for hdr in $headers; do
1165             echo "#include <$hdr>"
1166         done
1167         echo "int main(void) { "
1168         i=1
1169         for class in $classes; do
1170             echo "$class obj$i;"
1171             i=$(expr $i + 1)
1172         done
1173         echo "return 0; }"
1174     } | check_ld "cxx" "$@" && enable $funcs && enable_safe $headers
1175 }
1176
1177 check_cpp_condition(){
1178     log check_cpp_condition "$@"
1179     header=$1
1180     condition=$2
1181     shift 2
1182     check_cpp "$@" <<EOF
1183 #include <$header>
1184 #if !($condition)
1185 #error "unsatisfied condition: $condition"
1186 #endif
1187 EOF
1188 }
1189
1190 check_lib(){
1191     log check_lib "$@"
1192     header="$1"
1193     func="$2"
1194     shift 2
1195     check_header $header && check_func $func "$@" && add_extralibs "$@"
1196 }
1197
1198 check_lib2(){
1199     log check_lib2 "$@"
1200     headers="$1"
1201     funcs="$2"
1202     shift 2
1203     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
1204 }
1205
1206 check_lib_cpp(){
1207     log check_lib_cpp "$@"
1208     headers="$1"
1209     classes="$2"
1210     shift 2
1211     check_class_headers_cpp "$headers" "$classes" "$@" && add_extralibs "$@"
1212 }
1213
1214 check_pkg_config(){
1215     log check_pkg_config "$@"
1216     pkgandversion="$1"
1217     pkg="${1%% *}"
1218     headers="$2"
1219     funcs="$3"
1220     shift 3
1221     check_cmd $pkg_config --exists --print-errors $pkgandversion || return
1222     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1223     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1224     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1225         set_safe "${pkg}_cflags" $pkg_cflags   &&
1226         set_safe "${pkg}_libs"   $pkg_libs
1227 }
1228
1229 check_exec(){
1230     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1231 }
1232
1233 check_exec_crash(){
1234     code=$(cat)
1235
1236     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1237     # are safe but may not be available everywhere.  Thus we use
1238     # raise(SIGTERM) instead.  The check is run in a subshell so we
1239     # can redirect the "Terminated" message from the shell.  SIGBUS
1240     # is not defined by standard C so it is used conditionally.
1241
1242     (check_exec "$@") >> $logfile 2>&1 <<EOF
1243 #include <signal.h>
1244 static void sighandler(int sig){
1245     raise(SIGTERM);
1246 }
1247 int foo(void){
1248     $code
1249 }
1250 int (*func_ptr)(void) = foo;
1251 int main(void){
1252     signal(SIGILL, sighandler);
1253     signal(SIGFPE, sighandler);
1254     signal(SIGSEGV, sighandler);
1255 #ifdef SIGBUS
1256     signal(SIGBUS, sighandler);
1257 #endif
1258     return func_ptr();
1259 }
1260 EOF
1261 }
1262
1263 check_type(){
1264     log check_type "$@"
1265     headers=$1
1266     type=$2
1267     shift 2
1268     disable_safe "$type"
1269     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1270 }
1271
1272 check_struct(){
1273     log check_struct "$@"
1274     headers=$1
1275     struct=$2
1276     member=$3
1277     shift 3
1278     disable_safe "${struct}_${member}"
1279     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1280         enable_safe "${struct}_${member}"
1281 }
1282
1283 check_builtin(){
1284     log check_builtin "$@"
1285     name=$1
1286     headers=$2
1287     builtin=$3
1288     shift 3
1289     disable "$name"
1290     check_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1291 }
1292
1293 check_compile_assert(){
1294     log check_compile_assert "$@"
1295     name=$1
1296     headers=$2
1297     condition=$3
1298     shift 3
1299     disable "$name"
1300     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1301 }
1302
1303 require(){
1304     name="$1"
1305     header="$2"
1306     func="$3"
1307     shift 3
1308     check_lib $header $func "$@" || die "ERROR: $name not found"
1309 }
1310
1311 require2(){
1312     name="$1"
1313     headers="$2"
1314     func="$3"
1315     shift 3
1316     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
1317 }
1318
1319 require_cpp(){
1320     name="$1"
1321     headers="$2"
1322     classes="$3"
1323     shift 3
1324     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1325 }
1326
1327 use_pkg_config(){
1328     pkg="$1"
1329     check_pkg_config "$@" || return 1
1330     add_cflags    $(get_safe "${pkg}_cflags")
1331     add_extralibs $(get_safe "${pkg}_libs")
1332 }
1333
1334 require_pkg_config(){
1335     use_pkg_config "$@" || die "ERROR: $pkg not found using pkg-config$pkg_config_fail_message"
1336 }
1337
1338 require_libfreetype(){
1339     log require_libfreetype "$@"
1340     pkg="freetype2"
1341     check_cmd $pkg_config --exists --print-errors $pkg \
1342       || die "ERROR: $pkg not found"
1343     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1344     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1345     {
1346         echo "#include <ft2build.h>"
1347         echo "#include FT_FREETYPE_H"
1348         echo "long check_func(void) { return (long) FT_Init_FreeType; }"
1349         echo "int main(void) { return 0; }"
1350     } | check_ld "cc" $pkg_cflags $pkg_libs \
1351       && set_safe "${pkg}_cflags" $pkg_cflags \
1352       && set_safe "${pkg}_libs"   $pkg_libs \
1353       || die "ERROR: $pkg not found"
1354     add_cflags    $(get_safe "${pkg}_cflags")
1355     add_extralibs $(get_safe "${pkg}_libs")
1356 }
1357
1358 hostcc_e(){
1359     eval printf '%s\\n' $HOSTCC_E
1360 }
1361
1362 hostcc_o(){
1363     eval printf '%s\\n' $HOSTCC_O
1364 }
1365
1366 check_host_cc(){
1367     log check_host_cc "$@"
1368     cat > $TMPC
1369     log_file $TMPC
1370     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1371 }
1372
1373 check_host_cpp(){
1374     log check_host_cpp "$@"
1375     cat > $TMPC
1376     log_file $TMPC
1377     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1378 }
1379
1380 check_host_cppflags(){
1381     log check_host_cppflags "$@"
1382     check_host_cc "$@" <<EOF && append host_cppflags "$@"
1383 int x;
1384 EOF
1385 }
1386
1387 check_host_cflags(){
1388     log check_host_cflags "$@"
1389     set -- $($host_cflags_filter "$@")
1390     check_host_cc "$@" <<EOF && append host_cflags "$@"
1391 int x;
1392 EOF
1393 }
1394
1395 check_host_cpp_condition(){
1396     log check_host_cpp_condition "$@"
1397     header=$1
1398     condition=$2
1399     shift 2
1400     check_host_cpp "$@" <<EOF
1401 #include <$header>
1402 #if !($condition)
1403 #error "unsatisfied condition: $condition"
1404 #endif
1405 EOF
1406 }
1407
1408 cp_if_changed(){
1409     cmp -s "$1" "$2" && echo "$2 is unchanged" && return
1410     mkdir -p "$(dirname $2)"
1411     $cp_f "$1" "$2"
1412 }
1413
1414 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1415 # system-dependent things.
1416
1417 AVCODEC_COMPONENTS="
1418     bsfs
1419     decoders
1420     encoders
1421     hwaccels
1422     parsers
1423 "
1424
1425 AVDEVICE_COMPONENTS="
1426     indevs
1427     outdevs
1428 "
1429 AVFILTER_COMPONENTS="
1430     filters
1431 "
1432 AVFORMAT_COMPONENTS="
1433     demuxers
1434     muxers
1435     protocols
1436 "
1437
1438 AVRESAMPLE_COMPONENTS=""
1439 AVUTIL_COMPONENTS=""
1440
1441 COMPONENT_LIST="
1442     $AVCODEC_COMPONENTS
1443     $AVDEVICE_COMPONENTS
1444     $AVFILTER_COMPONENTS
1445     $AVFORMAT_COMPONENTS
1446     $AVRESAMPLE_COMPONENTS
1447     $AVUTIL_COMPONENTS
1448 "
1449
1450 EXAMPLE_LIST="
1451     avio_dir_cmd_example
1452     avio_reading_example
1453     decoding_encoding_example
1454     demuxing_decoding_example
1455     extract_mvs_example
1456     filter_audio_example
1457     filtering_audio_example
1458     filtering_video_example
1459     http_multiclient_example
1460     metadata_example
1461     muxing_example
1462     qsvdec_example
1463     remuxing_example
1464     resampling_audio_example
1465     scaling_video_example
1466     transcode_aac_example
1467     transcoding_example
1468 "
1469
1470 EXTERNAL_LIBRARY_LIST="
1471     avisynth
1472     bzlib
1473     chromaprint
1474     crystalhd
1475     decklink
1476     frei0r
1477     gcrypt
1478     gmp
1479     gnutls
1480     iconv
1481     jni
1482     ladspa
1483     libass
1484     libbluray
1485     libbs2b
1486     libcaca
1487     libcdio
1488     libcelt
1489     libdc1394
1490     libebur128
1491     libfaac
1492     libfdk_aac
1493     libflite
1494     libfontconfig
1495     libfreetype
1496     libfribidi
1497     libgme
1498     libgsm
1499     libiec61883
1500     libilbc
1501     libkvazaar
1502     libmodplug
1503     libmp3lame
1504     libnut
1505     libopencore_amrnb
1506     libopencore_amrwb
1507     libopencv
1508     libopenh264
1509     libopenjpeg
1510     libopenmpt
1511     libopus
1512     libpulse
1513     librtmp
1514     librubberband
1515     libschroedinger
1516     libshine
1517     libsmbclient
1518     libsnappy
1519     libsoxr
1520     libspeex
1521     libssh
1522     libtesseract
1523     libtheora
1524     libtwolame
1525     libv4l2
1526     libvidstab
1527     libvo_amrwbenc
1528     libvorbis
1529     libvpx
1530     libwavpack
1531     libwebp
1532     libx264
1533     libx265
1534     libxavs
1535     libxcb
1536     libxcb_shm
1537     libxcb_shape
1538     libxcb_xfixes
1539     libxvid
1540     libzimg
1541     libzmq
1542     libzvbi
1543     lzma
1544     mediacodec
1545     netcdf
1546     openal
1547     opencl
1548     opengl
1549     openssl
1550     schannel
1551     sdl
1552     sdl2
1553     securetransport
1554     videotoolbox
1555     x11grab
1556     xlib
1557     zlib
1558 "
1559
1560 HWACCEL_LIBRARY_LIST="
1561     audiotoolbox
1562     cuda
1563     cuvid
1564     d3d11va
1565     dxva2
1566     libmfx
1567     libnpp
1568     mmal
1569     nvenc
1570     omx
1571     vaapi
1572     vda
1573     vdpau
1574     videotoolbox_hwaccel
1575     xvmc
1576 "
1577
1578 DOCUMENT_LIST="
1579     doc
1580     htmlpages
1581     manpages
1582     podpages
1583     txtpages
1584 "
1585
1586 FEATURE_LIST="
1587     ftrapv
1588     gray
1589     hardcoded_tables
1590     omx_rpi
1591     runtime_cpudetect
1592     safe_bitstream_reader
1593     shared
1594     small
1595     static
1596     swscale_alpha
1597 "
1598
1599 LIBRARY_LIST="
1600     avcodec
1601     avdevice
1602     avfilter
1603     avformat
1604     avresample
1605     avutil
1606     postproc
1607     swresample
1608     swscale
1609 "
1610
1611 LICENSE_LIST="
1612     gpl
1613     nonfree
1614     version3
1615 "
1616
1617 PROGRAM_LIST="
1618     ffplay
1619     ffprobe
1620     ffserver
1621     ffmpeg
1622 "
1623
1624 SUBSYSTEM_LIST="
1625     dct
1626     dwt
1627     error_resilience
1628     faan
1629     fast_unaligned
1630     fft
1631     lsp
1632     lzo
1633     mdct
1634     pixelutils
1635     network
1636     rdft
1637 "
1638
1639 CONFIG_LIST="
1640     $COMPONENT_LIST
1641     $DOCUMENT_LIST
1642     $EXAMPLE_LIST
1643     $EXTERNAL_LIBRARY_LIST
1644     $HWACCEL_LIBRARY_LIST
1645     $FEATURE_LIST
1646     $LICENSE_LIST
1647     $LIBRARY_LIST
1648     $PROGRAM_LIST
1649     $SUBSYSTEM_LIST
1650     fontconfig
1651     incompatible_libav_abi
1652     memalign_hack
1653     memory_poisoning
1654     neon_clobber_test
1655     pic
1656     pod2man
1657     raise_major
1658     thumb
1659     valgrind_backtrace
1660     xmm_clobber_test
1661 "
1662
1663 THREADS_LIST="
1664     pthreads
1665     os2threads
1666     w32threads
1667 "
1668
1669 ATOMICS_LIST="
1670     atomics_gcc
1671     atomics_suncc
1672     atomics_win32
1673 "
1674
1675 ARCH_LIST="
1676     aarch64
1677     alpha
1678     arm
1679     avr32
1680     avr32_ap
1681     avr32_uc
1682     bfin
1683     ia64
1684     m68k
1685     mips
1686     mips64
1687     parisc
1688     ppc
1689     ppc64
1690     s390
1691     sh4
1692     sparc
1693     sparc64
1694     tilegx
1695     tilepro
1696     tomi
1697     x86
1698     x86_32
1699     x86_64
1700 "
1701
1702 ARCH_EXT_LIST_ARM="
1703     armv5te
1704     armv6
1705     armv6t2
1706     armv8
1707     neon
1708     vfp
1709     vfpv3
1710     setend
1711 "
1712
1713 ARCH_EXT_LIST_MIPS="
1714     mipsfpu
1715     mips32r2
1716     mips32r5
1717     mips64r2
1718     mips32r6
1719     mips64r6
1720     mipsdsp
1721     mipsdspr2
1722     msa
1723 "
1724
1725 ARCH_EXT_LIST_LOONGSON="
1726     loongson2
1727     loongson3
1728     mmi
1729 "
1730
1731 ARCH_EXT_LIST_X86_SIMD="
1732     aesni
1733     amd3dnow
1734     amd3dnowext
1735     avx
1736     avx2
1737     fma3
1738     fma4
1739     mmx
1740     mmxext
1741     sse
1742     sse2
1743     sse3
1744     sse4
1745     sse42
1746     ssse3
1747     xop
1748 "
1749
1750 ARCH_EXT_LIST_PPC="
1751     altivec
1752     dcbzl
1753     ldbrx
1754     power8
1755     ppc4xx
1756     vsx
1757 "
1758
1759 ARCH_EXT_LIST_X86="
1760     $ARCH_EXT_LIST_X86_SIMD
1761     cpunop
1762     i686
1763 "
1764
1765 ARCH_EXT_LIST="
1766     $ARCH_EXT_LIST_ARM
1767     $ARCH_EXT_LIST_PPC
1768     $ARCH_EXT_LIST_X86
1769     $ARCH_EXT_LIST_MIPS
1770     $ARCH_EXT_LIST_LOONGSON
1771 "
1772
1773 ARCH_FEATURES="
1774     aligned_stack
1775     fast_64bit
1776     fast_clz
1777     fast_cmov
1778     local_aligned_8
1779     local_aligned_16
1780     local_aligned_32
1781     simd_align_16
1782 "
1783
1784 BUILTIN_LIST="
1785     atomic_cas_ptr
1786     atomic_compare_exchange
1787     machine_rw_barrier
1788     MemoryBarrier
1789     mm_empty
1790     rdtsc
1791     sarestart
1792     sem_timedwait
1793     sync_val_compare_and_swap
1794 "
1795 HAVE_LIST_CMDLINE="
1796     inline_asm
1797     symver
1798     yasm
1799 "
1800
1801 HAVE_LIST_PUB="
1802     bigendian
1803     fast_unaligned
1804     incompatible_libav_abi
1805 "
1806
1807 HEADERS_LIST="
1808     alsa_asoundlib_h
1809     altivec_h
1810     arpa_inet_h
1811     asm_types_h
1812     cdio_paranoia_h
1813     cdio_paranoia_paranoia_h
1814     dispatch_dispatch_h
1815     dev_bktr_ioctl_bt848_h
1816     dev_bktr_ioctl_meteor_h
1817     dev_ic_bt8xx_h
1818     dev_video_bktr_ioctl_bt848_h
1819     dev_video_meteor_ioctl_meteor_h
1820     direct_h
1821     dirent_h
1822     dlfcn_h
1823     d3d11_h
1824     dxva_h
1825     ES2_gl_h
1826     gsm_h
1827     io_h
1828     mach_mach_time_h
1829     machine_ioctl_bt848_h
1830     machine_ioctl_meteor_h
1831     malloc_h
1832     opencv2_core_core_c_h
1833     openjpeg_2_1_openjpeg_h
1834     openjpeg_2_0_openjpeg_h
1835     openjpeg_1_5_openjpeg_h
1836     OpenGL_gl3_h
1837     poll_h
1838     sndio_h
1839     soundcard_h
1840     sys_mman_h
1841     sys_param_h
1842     sys_resource_h
1843     sys_select_h
1844     sys_soundcard_h
1845     sys_time_h
1846     sys_un_h
1847     sys_videoio_h
1848     termios_h
1849     udplite_h
1850     unistd_h
1851     valgrind_valgrind_h
1852     windows_h
1853     winsock2_h
1854 "
1855
1856 INTRINSICS_LIST="
1857     intrinsics_neon
1858 "
1859
1860 COMPLEX_FUNCS="
1861     cabs
1862     cexp
1863 "
1864
1865 MATH_FUNCS="
1866     atanf
1867     atan2f
1868     cbrt
1869     cbrtf
1870     copysign
1871     cosf
1872     erf
1873     exp2
1874     exp2f
1875     expf
1876     hypot
1877     isfinite
1878     isinf
1879     isnan
1880     ldexpf
1881     llrint
1882     llrintf
1883     log2
1884     log2f
1885     log10f
1886     lrint
1887     lrintf
1888     powf
1889     rint
1890     round
1891     roundf
1892     sinf
1893     trunc
1894     truncf
1895 "
1896
1897 SYSTEM_FUNCS="
1898     access
1899     aligned_malloc
1900     arc4random
1901     clock_gettime
1902     closesocket
1903     CommandLineToArgvW
1904     CoTaskMemFree
1905     CryptGenRandom
1906     dlopen
1907     fcntl
1908     flt_lim
1909     fork
1910     getaddrinfo
1911     gethrtime
1912     getopt
1913     GetProcessAffinityMask
1914     GetProcessMemoryInfo
1915     GetProcessTimes
1916     getrusage
1917     GetSystemTimeAsFileTime
1918     gettimeofday
1919     glob
1920     glXGetProcAddress
1921     gmtime_r
1922     inet_aton
1923     isatty
1924     jack_port_get_latency_range
1925     kbhit
1926     LoadLibrary
1927     localtime_r
1928     lstat
1929     lzo1x_999_compress
1930     mach_absolute_time
1931     MapViewOfFile
1932     memalign
1933     mkstemp
1934     mmap
1935     mprotect
1936     nanosleep
1937     PeekNamedPipe
1938     posix_memalign
1939     pthread_cancel
1940     sched_getaffinity
1941     SetConsoleTextAttribute
1942     SetConsoleCtrlHandler
1943     setmode
1944     setrlimit
1945     Sleep
1946     strerror_r
1947     sysconf
1948     sysctl
1949     usleep
1950     UTGetOSTypeFromString
1951     VirtualAlloc
1952     wglGetProcAddress
1953 "
1954
1955 TOOLCHAIN_FEATURES="
1956     as_dn_directive
1957     as_func
1958     as_object_arch
1959     asm_mod_q
1960     attribute_may_alias
1961     attribute_packed
1962     ebp_available
1963     ebx_available
1964     gnu_as
1965     gnu_windres
1966     ibm_asm
1967     inline_asm_direct_symbol_refs
1968     inline_asm_labels
1969     inline_asm_nonlocal_labels
1970     pragma_deprecated
1971     rsync_contimeout
1972     symver_asm_label
1973     symver_gnu_asm
1974     vfp_args
1975     xform_asm
1976     xmm_clobbers
1977 "
1978
1979 TYPES_LIST="
1980     CONDITION_VARIABLE_Ptr
1981     socklen_t
1982     struct_addrinfo
1983     struct_group_source_req
1984     struct_ip_mreq_source
1985     struct_ipv6_mreq
1986     struct_msghdr_msg_flags
1987     struct_pollfd
1988     struct_rusage_ru_maxrss
1989     struct_sctp_event_subscribe
1990     struct_sockaddr_in6
1991     struct_sockaddr_sa_len
1992     struct_sockaddr_storage
1993     struct_stat_st_mtim_tv_nsec
1994     struct_v4l2_frmivalenum_discrete
1995 "
1996
1997 HAVE_LIST="
1998     $ARCH_EXT_LIST
1999     $(add_suffix _external $ARCH_EXT_LIST)
2000     $(add_suffix _inline   $ARCH_EXT_LIST)
2001     $ARCH_FEATURES
2002     $ATOMICS_LIST
2003     $BUILTIN_LIST
2004     $COMPLEX_FUNCS
2005     $HAVE_LIST_CMDLINE
2006     $HAVE_LIST_PUB
2007     $HEADERS_LIST
2008     $INTRINSICS_LIST
2009     $MATH_FUNCS
2010     $SYSTEM_FUNCS
2011     $THREADS_LIST
2012     $TOOLCHAIN_FEATURES
2013     $TYPES_LIST
2014     atomics_native
2015     dos_paths
2016     dxva2_lib
2017     dxva2api_cobj
2018     libc_msvcrt
2019     libdc1394_1
2020     libdc1394_2
2021     makeinfo
2022     makeinfo_html
2023     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
2024     perl
2025     pod2man
2026     sdl2
2027     section_data_rel_ro
2028     texi2html
2029     threads
2030     vaapi_drm
2031     vaapi_x11
2032     vdpau_x11
2033     winrt
2034     xlib
2035 "
2036
2037 # options emitted with CONFIG_ prefix but not available on the command line
2038 CONFIG_EXTRA="
2039     aandcttables
2040     ac3dsp
2041     audio_frame_queue
2042     audiodsp
2043     blockdsp
2044     bswapdsp
2045     cabac
2046     dirac_parse
2047     dvprofile
2048     exif
2049     faandct
2050     faanidct
2051     fdctdsp
2052     flacdsp
2053     fmtconvert
2054     frame_thread_encoder
2055     g722dsp
2056     golomb
2057     gplv3
2058     h263dsp
2059     h264chroma
2060     h264dsp
2061     h264pred
2062     h264qpel
2063     hpeldsp
2064     huffman
2065     huffyuvdsp
2066     huffyuvencdsp
2067     idctdsp
2068     iirfilter
2069     imdct15
2070     intrax8
2071     iso_media
2072     ividsp
2073     jpegtables
2074     lgplv3
2075     libx262
2076     llauddsp
2077     llviddsp
2078     lpc
2079     lzf
2080     me_cmp
2081     mpeg_er
2082     mpegaudio
2083     mpegaudiodsp
2084     mpegvideo
2085     mpegvideoenc
2086     mss34dsp
2087     pixblockdsp
2088     qpeldsp
2089     qsv
2090     qsvdec
2091     qsvenc
2092     rangecoder
2093     riffdec
2094     riffenc
2095     rtpdec
2096     rtpenc_chain
2097     rv34dsp
2098     sinewin
2099     snappy
2100     srtp
2101     startcode
2102     texturedsp
2103     texturedspenc
2104     tpeldsp
2105     vaapi_encode
2106     vc1dsp
2107     videodsp
2108     vp3dsp
2109     vp56dsp
2110     vp8dsp
2111     vt_bt2020
2112     wma_freqs
2113     wmv2dsp
2114 "
2115
2116 CMDLINE_SELECT="
2117     $ARCH_EXT_LIST
2118     $CONFIG_LIST
2119     $HAVE_LIST_CMDLINE
2120     $THREADS_LIST
2121     asm
2122     cross_compile
2123     debug
2124     extra_warnings
2125     logging
2126     lto
2127     optimizations
2128     rpath
2129     stripping
2130 "
2131
2132 PATHS_LIST="
2133     bindir
2134     datadir
2135     docdir
2136     incdir
2137     libdir
2138     mandir
2139     pkgconfigdir
2140     prefix
2141     shlibdir
2142     install_name_dir
2143 "
2144
2145 CMDLINE_SET="
2146     $PATHS_LIST
2147     ar
2148     arch
2149     as
2150     assert_level
2151     build_suffix
2152     cc
2153     objcc
2154     cpu
2155     cross_prefix
2156     custom_allocator
2157     cxx
2158     dep_cc
2159     doxygen
2160     env
2161     extra_version
2162     gas
2163     host_cc
2164     host_cflags
2165     host_ld
2166     host_ldflags
2167     host_libs
2168     host_os
2169     install
2170     ld
2171     ln_s
2172     logfile
2173     malloc_prefix
2174     nm
2175     optflags
2176     pkg_config
2177     pkg_config_flags
2178     progs_suffix
2179     random_seed
2180     ranlib
2181     samples
2182     strip
2183     sws_max_filter_size
2184     sysinclude
2185     sysroot
2186     target_exec
2187     target_os
2188     target_path
2189     target_samples
2190     tempprefix
2191     toolchain
2192     valgrind
2193     yasmexe
2194 "
2195
2196 CMDLINE_APPEND="
2197     extra_cflags
2198     extra_cxxflags
2199     extra_objcflags
2200     host_cppflags
2201 "
2202
2203 # code dependency declarations
2204
2205 # architecture extensions
2206
2207 armv5te_deps="arm"
2208 armv6_deps="arm"
2209 armv6t2_deps="arm"
2210 armv8_deps="aarch64"
2211 neon_deps_any="aarch64 arm"
2212 intrinsics_neon_deps="neon"
2213 vfp_deps_any="aarch64 arm"
2214 vfpv3_deps="vfp"
2215 setend_deps="arm"
2216
2217 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2218
2219 loongson2_deps="mips"
2220 loongson3_deps="mips"
2221 mipsfpu_deps="mips"
2222 mipsdsp_deps="mips"
2223 mipsdspr2_deps="mips"
2224 mips32r2_deps="mips"
2225 mips32r5_deps="mips"
2226 mips32r6_deps="mips"
2227 mips64r2_deps="mips"
2228 mips64r6_deps="mips"
2229 msa_deps="mipsfpu"
2230 mmi_deps="mips"
2231
2232 altivec_deps="ppc"
2233 dcbzl_deps="ppc"
2234 ldbrx_deps="ppc"
2235 ppc4xx_deps="ppc"
2236 vsx_deps="altivec"
2237 power8_deps="vsx"
2238
2239 cpunop_deps="i686"
2240 x86_64_select="i686"
2241 x86_64_suggest="fast_cmov"
2242
2243 amd3dnow_deps="mmx"
2244 amd3dnowext_deps="amd3dnow"
2245 i686_deps="x86"
2246 mmx_deps="x86"
2247 mmxext_deps="mmx"
2248 sse_deps="mmxext"
2249 sse2_deps="sse"
2250 sse3_deps="sse2"
2251 ssse3_deps="sse3"
2252 sse4_deps="ssse3"
2253 sse42_deps="sse4"
2254 aesni_deps="sse42"
2255 avx_deps="sse42"
2256 xop_deps="avx"
2257 fma3_deps="avx"
2258 fma4_deps="avx"
2259 avx2_deps="avx"
2260
2261 mmx_external_deps="yasm"
2262 mmx_inline_deps="inline_asm"
2263 mmx_suggest="mmx_external mmx_inline"
2264
2265 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2266     eval dep=\$${ext}_deps
2267     eval ${ext}_external_deps='"${dep}_external"'
2268     eval ${ext}_inline_deps='"${dep}_inline"'
2269     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2270 done
2271
2272 aligned_stack_if_any="aarch64 ppc x86"
2273 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2274 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2275 fast_unaligned_if_any="aarch64 ppc x86"
2276 simd_align_16_if_any="altivec neon sse"
2277
2278 # system capabilities
2279 symver_if_any="symver_asm_label symver_gnu_asm"
2280 valgrind_backtrace_deps="!optimizations valgrind_valgrind_h"
2281
2282 # threading support
2283 atomics_gcc_if_any="sync_val_compare_and_swap atomic_compare_exchange"
2284 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2285 atomics_win32_if="MemoryBarrier"
2286 atomics_native_if_any="$ATOMICS_LIST"
2287 w32threads_deps="atomics_native"
2288 threads_if_any="$THREADS_LIST"
2289
2290 # subsystems
2291 dct_select="rdft"
2292 dirac_parse_select="golomb"
2293 error_resilience_select="me_cmp"
2294 faandct_deps="faan fdctdsp"
2295 faanidct_deps="faan idctdsp"
2296 h264dsp_select="startcode"
2297 frame_thread_encoder_deps="encoders threads"
2298 intrax8_select="blockdsp idctdsp"
2299 mdct_select="fft"
2300 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2301 mpeg_er_select="error_resilience"
2302 mpegaudio_select="mpegaudiodsp"
2303 mpegaudiodsp_select="dct"
2304 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2305 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
2306 vc1dsp_select="h264chroma qpeldsp startcode"
2307 rdft_select="fft"
2308
2309 # decoders / encoders
2310 aac_decoder_select="imdct15 mdct sinewin"
2311 aac_fixed_decoder_select="mdct sinewin"
2312 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2313 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2314 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2315 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2316 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2317 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2318 adpcm_g722_decoder_select="g722dsp"
2319 adpcm_g722_encoder_select="g722dsp"
2320 aic_decoder_select="golomb idctdsp"
2321 alac_encoder_select="lpc"
2322 als_decoder_select="bswapdsp"
2323 amrnb_decoder_select="lsp"
2324 amrwb_decoder_select="lsp"
2325 amv_decoder_select="sp5x_decoder exif"
2326 amv_encoder_select="aandcttables jpegtables mpegvideoenc"
2327 ape_decoder_select="bswapdsp llauddsp"
2328 apng_decoder_select="zlib"
2329 apng_encoder_select="huffyuvencdsp zlib"
2330 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2331 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2332 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2333 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2334 atrac1_decoder_select="mdct sinewin"
2335 atrac3_decoder_select="mdct"
2336 atrac3p_decoder_select="mdct sinewin"
2337 avrn_decoder_select="exif jpegtables"
2338 bink_decoder_select="blockdsp hpeldsp"
2339 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2340 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2341 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2342 cllc_decoder_select="bswapdsp"
2343 comfortnoise_encoder_select="lpc"
2344 cook_decoder_select="audiodsp mdct sinewin"
2345 cscd_decoder_select="lzo"
2346 cscd_decoder_suggest="zlib"
2347 dca_decoder_select="mdct"
2348 dds_decoder_select="texturedsp"
2349 dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
2350 dnxhd_decoder_select="blockdsp idctdsp"
2351 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2352 dvvideo_decoder_select="dvprofile idctdsp"
2353 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2354 dxa_decoder_select="zlib"
2355 dxv_decoder_select="lzf texturedsp"
2356 eac3_decoder_select="ac3_decoder"
2357 eac3_encoder_select="ac3_encoder"
2358 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2359 eatgq_decoder_select="aandcttables"
2360 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2361 exr_decoder_select="zlib"
2362 ffv1_decoder_select="golomb rangecoder"
2363 ffv1_encoder_select="rangecoder"
2364 ffvhuff_decoder_select="huffyuv_decoder"
2365 ffvhuff_encoder_select="huffyuv_encoder"
2366 fic_decoder_select="golomb"
2367 flac_decoder_select="flacdsp golomb"
2368 flac_encoder_select="bswapdsp flacdsp golomb lpc"
2369 flashsv2_decoder_select="zlib"
2370 flashsv2_encoder_select="zlib"
2371 flashsv_decoder_select="zlib"
2372 flashsv_encoder_select="zlib"
2373 flv_decoder_select="h263_decoder"
2374 flv_encoder_select="h263_encoder"
2375 fourxm_decoder_select="blockdsp bswapdsp"
2376 fraps_decoder_select="bswapdsp huffman"
2377 g2m_decoder_select="blockdsp idctdsp jpegtables zlib"
2378 g729_decoder_select="audiodsp"
2379 h261_decoder_select="mpegvideo"
2380 h261_encoder_select="aandcttables mpegvideoenc"
2381 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2382 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2383 h263i_decoder_select="h263_decoder"
2384 h263p_decoder_select="h263_decoder"
2385 h263p_encoder_select="h263_encoder"
2386 h264_decoder_select="cabac golomb h264chroma h264dsp h264pred h264qpel videodsp"
2387 h264_decoder_suggest="error_resilience"
2388 hap_decoder_select="snappy texturedsp"
2389 hap_encoder_deps="libsnappy"
2390 hap_encoder_select="texturedspenc"
2391 hevc_decoder_select="bswapdsp cabac golomb videodsp"
2392 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2393 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llviddsp"
2394 iac_decoder_select="imc_decoder"
2395 imc_decoder_select="bswapdsp fft mdct sinewin"
2396 indeo3_decoder_select="hpeldsp"
2397 indeo4_decoder_select="ividsp"
2398 indeo5_decoder_select="ividsp"
2399 interplay_video_decoder_select="hpeldsp"
2400 jpegls_decoder_select="golomb mjpeg_decoder"
2401 jpegls_encoder_select="golomb"
2402 jv_decoder_select="blockdsp"
2403 lagarith_decoder_select="huffyuvdsp"
2404 ljpeg_encoder_select="aandcttables idctdsp jpegtables"
2405 loco_decoder_select="golomb"
2406 magicyuv_decoder_select="huffyuvdsp"
2407 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2408 metasound_decoder_select="lsp mdct sinewin"
2409 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2410 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2411 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2412 mjpegb_decoder_select="mjpeg_decoder"
2413 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2414 mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
2415 mlp_decoder_select="mlp_parser"
2416 motionpixels_decoder_select="bswapdsp"
2417 mp1_decoder_select="mpegaudio"
2418 mp1float_decoder_select="mpegaudio"
2419 mp2_decoder_select="mpegaudio"
2420 mp2float_decoder_select="mpegaudio"
2421 mp3_decoder_select="mpegaudio"
2422 mp3adu_decoder_select="mpegaudio"
2423 mp3adufloat_decoder_select="mpegaudio"
2424 mp3float_decoder_select="mpegaudio"
2425 mp3on4_decoder_select="mpegaudio"
2426 mp3on4float_decoder_select="mpegaudio"
2427 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2428 mpc8_decoder_select="mpegaudiodsp"
2429 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
2430 mpeg_xvmc_decoder_select="mpeg2video_decoder"
2431 mpegvideo_decoder_select="mpegvideo"
2432 mpeg1video_decoder_select="mpegvideo"
2433 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2434 mpeg2video_decoder_select="mpegvideo"
2435 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2436 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2437 mpeg4_encoder_select="h263_encoder"
2438 msa1_decoder_select="mss34dsp"
2439 msmpeg4v1_decoder_select="h263_decoder"
2440 msmpeg4v2_decoder_select="h263_decoder"
2441 msmpeg4v2_encoder_select="h263_encoder"
2442 msmpeg4v3_decoder_select="h263_decoder"
2443 msmpeg4v3_encoder_select="h263_encoder"
2444 mss2_decoder_select="vc1_decoder mpegvideo"
2445 mts2_decoder_select="mss34dsp"
2446 mxpeg_decoder_select="mjpeg_decoder"
2447 nellymoser_decoder_select="mdct sinewin"
2448 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2449 nuv_decoder_select="idctdsp lzo"
2450 on2avc_decoder_select="mdct"
2451 opus_decoder_deps="swresample"
2452 opus_decoder_select="imdct15"
2453 png_decoder_select="zlib"
2454 png_encoder_select="huffyuvencdsp zlib"
2455 prores_decoder_select="blockdsp idctdsp"
2456 prores_encoder_select="fdctdsp"
2457 qcelp_decoder_select="lsp"
2458 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2459 ra_144_decoder_select="audiodsp"
2460 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2461 ralf_decoder_select="golomb"
2462 rawvideo_decoder_select="bswapdsp"
2463 rscc_decoder_select="zlib"
2464 rtjpeg_decoder_select="me_cmp"
2465 rv10_decoder_select="h263_decoder"
2466 rv10_encoder_select="h263_encoder"
2467 rv20_decoder_select="h263_decoder"
2468 rv20_encoder_select="h263_encoder"
2469 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2470 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2471 screenpresso_decoder_select="zlib"
2472 shorten_decoder_select="golomb"
2473 sipr_decoder_select="lsp"
2474 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2475 snow_encoder_select="aandcttables dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2476 sonic_decoder_select="golomb rangecoder"
2477 sonic_encoder_select="golomb rangecoder"
2478 sonic_ls_encoder_select="golomb rangecoder"
2479 sp5x_decoder_select="mjpeg_decoder"
2480 svq1_decoder_select="hpeldsp"
2481 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2482 svq3_decoder_select="golomb h264dsp h264pred hpeldsp tpeldsp videodsp"
2483 svq3_decoder_suggest="zlib"
2484 tak_decoder_select="audiodsp"
2485 tdsc_decoder_select="zlib mjpeg_decoder"
2486 theora_decoder_select="vp3_decoder"
2487 thp_decoder_select="mjpeg_decoder"
2488 tiff_decoder_suggest="zlib lzma"
2489 tiff_encoder_suggest="zlib"
2490 truehd_decoder_select="mlp_parser"
2491 truemotion2_decoder_select="bswapdsp"
2492 truespeech_decoder_select="bswapdsp"
2493 tscc_decoder_select="zlib"
2494 twinvq_decoder_select="mdct lsp sinewin"
2495 txd_decoder_select="texturedsp"
2496 utvideo_decoder_select="bswapdsp"
2497 utvideo_encoder_select="bswapdsp huffman huffyuvencdsp"
2498 vble_decoder_select="huffyuvdsp"
2499 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 mpegvideo vc1dsp"
2500 vc1_qsv_decoder_deps="libmfx"
2501 vc1_qsv_decoder_select="qsvdec vc1_qsv_hwaccel"
2502 vc1image_decoder_select="vc1_decoder"
2503 vorbis_decoder_select="mdct"
2504 vorbis_encoder_select="mdct"
2505 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2506 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2507 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2508 vp6a_decoder_select="vp6_decoder"
2509 vp6f_decoder_select="vp6_decoder"
2510 vp7_decoder_select="h264pred videodsp vp8dsp"
2511 vp8_decoder_select="h264pred videodsp vp8dsp"
2512 vp9_decoder_select="videodsp vp9_parser"
2513 webp_decoder_select="vp8_decoder exif"
2514 wmalossless_decoder_select="llauddsp"
2515 wmapro_decoder_select="mdct sinewin wma_freqs"
2516 wmav1_decoder_select="mdct sinewin wma_freqs"
2517 wmav1_encoder_select="mdct sinewin wma_freqs"
2518 wmav2_decoder_select="mdct sinewin wma_freqs"
2519 wmav2_encoder_select="mdct sinewin wma_freqs"
2520 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2521 wmv1_decoder_select="h263_decoder"
2522 wmv1_encoder_select="h263_encoder"
2523 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2524 wmv2_encoder_select="h263_encoder wmv2dsp"
2525 wmv3_decoder_select="vc1_decoder"
2526 wmv3image_decoder_select="wmv3_decoder"
2527 xma1_decoder_select="wmapro_decoder"
2528 xma2_decoder_select="wmapro_decoder"
2529 zerocodec_decoder_select="zlib"
2530 zlib_decoder_select="zlib"
2531 zlib_encoder_select="zlib"
2532 zmbv_decoder_select="zlib"
2533 zmbv_encoder_select="zlib"
2534
2535 # platform codecs
2536 audiotoolbox_deps="AudioToolbox_AudioToolbox_h"
2537 audiotoolbox_extralibs="-framework CoreFoundation -framework AudioToolbox -framework CoreMedia"
2538
2539 # hardware accelerators
2540 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2541 cuvid_deps="cuda"
2542 d3d11va_deps="d3d11_h dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2543 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode"
2544 vaapi_deps="va_va_h"
2545 vda_framework_deps="VideoDecodeAcceleration_VDADecoder_h"
2546 vda_framework_extralibs="-framework VideoDecodeAcceleration"
2547 vda_deps="vda_framework pthreads"
2548 vda_extralibs="-framework CoreFoundation -framework QuartzCore"
2549 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
2550 videotoolbox_hwaccel_deps="videotoolbox pthreads"
2551 videotoolbox_hwaccel_extralibs="-framework QuartzCore"
2552 xvmc_deps="X11_extensions_XvMClib_h"
2553
2554 h263_cuvid_hwaccel_deps="cuda cuvid"
2555 h263_vaapi_hwaccel_deps="vaapi"
2556 h263_vaapi_hwaccel_select="h263_decoder"
2557 h263_videotoolbox_hwaccel_deps="videotoolbox"
2558 h263_videotoolbox_hwaccel_select="h263_decoder"
2559 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2560 h264_cuvid_hwaccel_deps="cuda cuvid"
2561 h264_d3d11va_hwaccel_deps="d3d11va"
2562 h264_d3d11va_hwaccel_select="h264_decoder"
2563 h264_dxva2_hwaccel_deps="dxva2"
2564 h264_dxva2_hwaccel_select="h264_decoder"
2565 h264_mediacodec_decoder_deps="mediacodec"
2566 h264_mediacodec_hwaccel_deps="mediacodec"
2567 h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
2568 h264_mmal_decoder_deps="mmal"
2569 h264_mmal_decoder_select="mmal"
2570 h264_mmal_hwaccel_deps="mmal"
2571 h264_omx_encoder_deps="omx"
2572 h264_qsv_hwaccel_deps="libmfx"
2573 h264_vaapi_hwaccel_deps="vaapi"
2574 h264_vaapi_hwaccel_select="h264_decoder"
2575 h264_vda_decoder_deps="vda"
2576 h264_vda_decoder_select="h264_decoder"
2577 h264_vda_hwaccel_deps="vda"
2578 h264_vda_hwaccel_select="h264_decoder"
2579 h264_vda_old_hwaccel_deps="vda"
2580 h264_vda_old_hwaccel_select="h264_decoder"
2581 h264_vdpau_decoder_deps="vdpau"
2582 h264_vdpau_decoder_select="h264_decoder"
2583 h264_vdpau_hwaccel_deps="vdpau"
2584 h264_vdpau_hwaccel_select="h264_decoder"
2585 h264_videotoolbox_hwaccel_deps="videotoolbox"
2586 h264_videotoolbox_hwaccel_select="h264_decoder"
2587 hevc_cuvid_hwaccel_deps="cuda cuvid"
2588 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2589 hevc_d3d11va_hwaccel_select="hevc_decoder"
2590 hevc_mediacodec_decoder_deps="mediacodec"
2591 hevc_mediacodec_hwaccel_deps="mediacodec"
2592 hevc_mediacodec_decoder_select="hevc_mp4toannexb_bsf hevc_parser"
2593 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2594 hevc_dxva2_hwaccel_select="hevc_decoder"
2595 hevc_qsv_hwaccel_deps="libmfx"
2596 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2597 hevc_vaapi_hwaccel_select="hevc_decoder"
2598 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2599 hevc_vdpau_hwaccel_select="hevc_decoder"
2600 mjpeg_cuvid_hwaccel_deps="cuda cuvid"
2601 mpeg_vdpau_decoder_deps="vdpau"
2602 mpeg_vdpau_decoder_select="mpeg2video_decoder"
2603 mpeg_xvmc_hwaccel_deps="xvmc"
2604 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2605 mpeg1_cuvid_hwaccel_deps="cuda cuvid"
2606 mpeg1_vdpau_decoder_deps="vdpau"
2607 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
2608 mpeg1_vdpau_hwaccel_deps="vdpau"
2609 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2610 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2611 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2612 mpeg1_xvmc_hwaccel_deps="xvmc"
2613 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2614 mpeg2_crystalhd_decoder_select="crystalhd"
2615 mpeg2_cuvid_hwaccel_deps="cuda cuvid"
2616 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2617 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2618 mpeg2_dxva2_hwaccel_deps="dxva2"
2619 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2620 mpeg2_mmal_decoder_deps="mmal"
2621 mpeg2_mmal_decoder_select="mmal"
2622 mpeg2_mmal_hwaccel_deps="mmal"
2623 mpeg2_qsv_hwaccel_deps="libmfx"
2624 mpeg2_qsv_hwaccel_select="qsvdec_mpeg2"
2625 mpeg2_vaapi_hwaccel_deps="vaapi"
2626 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2627 mpeg2_vdpau_hwaccel_deps="vdpau"
2628 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2629 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2630 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2631 mpeg2_xvmc_hwaccel_deps="xvmc"
2632 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2633 mpeg4_crystalhd_decoder_select="crystalhd"
2634 mpeg4_cuvid_hwaccel_deps="cuda cuvid"
2635 mpeg4_mmal_decoder_deps="mmal"
2636 mpeg4_mmal_decoder_select="mmal"
2637 mpeg4_mmal_hwaccel_deps="mmal"
2638 mpeg4_omx_encoder_deps="omx"
2639 mpeg4_vaapi_hwaccel_deps="vaapi"
2640 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2641 mpeg4_vdpau_decoder_deps="vdpau"
2642 mpeg4_vdpau_decoder_select="mpeg4_decoder"
2643 mpeg4_vdpau_hwaccel_deps="vdpau"
2644 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2645 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2646 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2647 msmpeg4_crystalhd_decoder_select="crystalhd"
2648 vc1_crystalhd_decoder_select="crystalhd"
2649 vc1_cuvid_hwaccel_deps="cuda cuvid"
2650 vc1_d3d11va_hwaccel_deps="d3d11va"
2651 vc1_d3d11va_hwaccel_select="vc1_decoder"
2652 vc1_dxva2_hwaccel_deps="dxva2"
2653 vc1_dxva2_hwaccel_select="vc1_decoder"
2654 vc1_mmal_decoder_deps="mmal"
2655 vc1_mmal_decoder_select="mmal"
2656 vc1_mmal_hwaccel_deps="mmal"
2657 vc1_qsv_hwaccel_deps="libmfx"
2658 vc1_qsv_hwaccel_select="qsvdec_vc1"
2659 vc1_vaapi_hwaccel_deps="vaapi"
2660 vc1_vaapi_hwaccel_select="vc1_decoder"
2661 vc1_vdpau_decoder_deps="vdpau"
2662 vc1_vdpau_decoder_select="vc1_decoder"
2663 vc1_vdpau_hwaccel_deps="vdpau"
2664 vc1_vdpau_hwaccel_select="vc1_decoder"
2665 vp8_cuvid_hwaccel_deps="cuda cuvid"
2666 vp9_cuvid_hwaccel_deps="cuda cuvid"
2667 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2668 vp9_d3d11va_hwaccel_select="vp9_decoder"
2669 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
2670 vp9_dxva2_hwaccel_select="vp9_decoder"
2671 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9"
2672 vp9_vaapi_hwaccel_select="vp9_decoder"
2673 wmv3_crystalhd_decoder_select="crystalhd"
2674 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2675 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2676 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2677 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
2678 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2679
2680 # hardware-accelerated codecs
2681 omx_deps="dlopen pthreads"
2682 omx_extralibs='$ldl'
2683 qsvdec_select="qsv"
2684 qsvenc_select="qsv"
2685 vaapi_encode_deps="vaapi"
2686
2687 hwupload_cuda_filter_deps="cuda"
2688 scale_npp_filter_deps="cuda libnpp"
2689
2690 nvenc_deps_any="dlopen LoadLibrary"
2691 nvenc_encoder_deps="nvenc"
2692 h263_cuvid_decoder_deps="cuda cuvid"
2693 h263_cuvid_decoder_select="h263_cuvid_hwaccel"
2694 h264_cuvid_decoder_deps="cuda cuvid"
2695 h264_cuvid_decoder_select="h264_mp4toannexb_bsf h264_cuvid_hwaccel"
2696 h264_nvenc_encoder_deps="nvenc"
2697 h264_qsv_decoder_deps="libmfx"
2698 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2699 h264_qsv_encoder_deps="libmfx"
2700 h264_qsv_encoder_select="qsvenc"
2701 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2702 h264_vaapi_encoder_select="vaapi_encode golomb"
2703
2704 hevc_cuvid_decoder_deps="cuda cuvid"
2705 hevc_cuvid_decoder_select="hevc_mp4toannexb_bsf hevc_cuvid_hwaccel"
2706 hevc_nvenc_encoder_deps="nvenc"
2707 hevc_qsv_decoder_deps="libmfx"
2708 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec hevc_qsv_hwaccel"
2709 hevc_qsv_encoder_deps="libmfx"
2710 hevc_qsv_encoder_select="qsvenc"
2711 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2712 hevc_vaapi_encoder_select="vaapi_encode golomb"
2713 mjpeg_cuvid_decoder_deps="cuda cuvid"
2714 mjpeg_cuvid_decoder_select="mjpeg_cuvid_hwaccel"
2715 mpeg1_cuvid_decoder_deps="cuda cuvid"
2716 mpeg1_cuvid_decoder_select="mpeg1_cuvid_hwaccel"
2717 mpeg2_cuvid_decoder_deps="cuda cuvid"
2718 mpeg2_cuvid_decoder_select="mpeg2_cuvid_hwaccel"
2719 mpeg2_qsv_decoder_deps="libmfx"
2720 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel"
2721 mpeg2_qsv_encoder_deps="libmfx"
2722 mpeg2_qsv_encoder_select="qsvenc"
2723 mpeg4_cuvid_decoder_deps="cuda cuvid"
2724 mpeg4_cuvid_decoder_select="mpeg4_cuvid_hwaccel"
2725 nvenc_h264_encoder_deps="nvenc"
2726 nvenc_hevc_encoder_deps="nvenc"
2727
2728 vc1_cuvid_decoder_deps="cuda cuvid"
2729 vc1_cuvid_decoder_select="vc1_cuvid_hwaccel"
2730 vp8_cuvid_decoder_deps="cuda cuvid"
2731 vp8_cuvid_decoder_select="vp8_cuvid_hwaccel"
2732 vp9_cuvid_decoder_deps="cuda cuvid"
2733 vp9_cuvid_decoder_select="vp9_cuvid_hwaccel"
2734
2735 # parsers
2736 h264_parser_select="golomb h264dsp"
2737 hevc_parser_select="golomb"
2738 mpegvideo_parser_select="mpegvideo"
2739 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
2740 vc1_parser_select="vc1dsp"
2741
2742 # bitstream_filters
2743 mjpeg2jpeg_bsf_select="jpegtables"
2744
2745 # external libraries
2746 aac_at_decoder_deps="audiotoolbox"
2747 ac3_at_decoder_deps="audiotoolbox"
2748 ac3_at_decoder_select="ac3_parser"
2749 adpcm_ima_qt_at_decoder_deps="audiotoolbox"
2750 alac_at_decoder_deps="audiotoolbox"
2751 amr_nb_at_decoder_deps="audiotoolbox"
2752 eac3_at_decoder_deps="audiotoolbox"
2753 eac3_at_decoder_select="ac3_parser"
2754 gsm_ms_at_decoder_deps="audiotoolbox"
2755 ilbc_at_decoder_deps="audiotoolbox"
2756 mp1_at_decoder_deps="audiotoolbox"
2757 mp2_at_decoder_deps="audiotoolbox"
2758 mp3_at_decoder_deps="audiotoolbox"
2759 pcm_alaw_at_decoder_deps="audiotoolbox"
2760 pcm_mulaw_at_decoder_deps="audiotoolbox"
2761 qdmc_at_decoder_deps="audiotoolbox"
2762 qdm2_at_decoder_deps="audiotoolbox"
2763 aac_at_encoder_deps="audiotoolbox"
2764 aac_at_encoder_select="audio_frame_queue"
2765 alac_at_encoder_deps="audiotoolbox"
2766 alac_at_encoder_select="audio_frame_queue"
2767 ilbc_at_encoder_deps="audiotoolbox"
2768 ilbc_at_encoder_select="audio_frame_queue"
2769 pcm_alaw_at_encoder_deps="audiotoolbox"
2770 pcm_alaw_at_encoder_select="audio_frame_queue"
2771 pcm_mulaw_at_encoder_deps="audiotoolbox"
2772 pcm_mulaw_at_encoder_select="audio_frame_queue"
2773 chromaprint_muxer_deps="chromaprint"
2774 h264_videotoolbox_encoder_deps="videotoolbox_encoder pthreads"
2775 libcelt_decoder_deps="libcelt"
2776 libfaac_encoder_deps="libfaac"
2777 libfaac_encoder_select="audio_frame_queue"
2778 libfdk_aac_decoder_deps="libfdk_aac"
2779 libfdk_aac_encoder_deps="libfdk_aac"
2780 libfdk_aac_encoder_select="audio_frame_queue"
2781 libgme_demuxer_deps="libgme"
2782 libgsm_decoder_deps="libgsm"
2783 libgsm_encoder_deps="libgsm"
2784 libgsm_ms_decoder_deps="libgsm"
2785 libgsm_ms_encoder_deps="libgsm"
2786 libilbc_decoder_deps="libilbc"
2787 libilbc_encoder_deps="libilbc"
2788 libkvazaar_encoder_deps="libkvazaar"
2789 libmodplug_demuxer_deps="libmodplug"
2790 libmp3lame_encoder_deps="libmp3lame"
2791 libmp3lame_encoder_select="audio_frame_queue"
2792 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2793 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2794 libopencore_amrnb_encoder_select="audio_frame_queue"
2795 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2796 libopenh264_decoder_deps="libopenh264"
2797 libopenh264_decoder_select="h264_mp4toannexb_bsf"
2798 libopenh264_encoder_deps="libopenh264"
2799 libopenjpeg_decoder_deps="libopenjpeg"
2800 libopenjpeg_encoder_deps="libopenjpeg"
2801 libopenmpt_demuxer_deps="libopenmpt"
2802 libopus_decoder_deps="libopus"
2803 libopus_encoder_deps="libopus"
2804 libopus_encoder_select="audio_frame_queue"
2805 libschroedinger_decoder_deps="libschroedinger"
2806 libschroedinger_encoder_deps="libschroedinger"
2807 libshine_encoder_deps="libshine"
2808 libshine_encoder_select="audio_frame_queue"
2809 libspeex_decoder_deps="libspeex"
2810 libspeex_encoder_deps="libspeex"
2811 libspeex_encoder_select="audio_frame_queue"
2812 libtheora_encoder_deps="libtheora"
2813 libtwolame_encoder_deps="libtwolame"
2814 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2815 libvorbis_decoder_deps="libvorbis"
2816 libvorbis_encoder_deps="libvorbis"
2817 libvorbis_encoder_select="audio_frame_queue"
2818 libvpx_vp8_decoder_deps="libvpx"
2819 libvpx_vp8_encoder_deps="libvpx"
2820 libvpx_vp9_decoder_deps="libvpx"
2821 libvpx_vp9_encoder_deps="libvpx"
2822 libwavpack_encoder_deps="libwavpack"
2823 libwebp_encoder_deps="libwebp"
2824 libwebp_anim_encoder_deps="libwebp"
2825 libx262_encoder_deps="libx262"
2826 libx264_encoder_deps="libx264"
2827 libx264rgb_encoder_deps="libx264 x264_csp_bgr"
2828 libx264rgb_encoder_select="libx264_encoder"
2829 libx265_encoder_deps="libx265"
2830 libxavs_encoder_deps="libxavs"
2831 libxvid_encoder_deps="libxvid"
2832 libzvbi_teletext_decoder_deps="libzvbi"
2833 videotoolbox_deps="VideoToolbox_VideoToolbox_h"
2834 videotoolbox_extralibs="-framework CoreFoundation -framework VideoToolbox -framework CoreMedia -framework CoreVideo"
2835 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
2836 videotoolbox_encoder_suggest="vda_framework vt_bt2020"
2837 vt_bt2020_deps="kCVImageBufferColorPrimaries_ITU_R_2020"
2838
2839 # demuxers / muxers
2840 ac3_demuxer_select="ac3_parser"
2841 asf_demuxer_select="riffdec"
2842 asf_o_demuxer_select="riffdec"
2843 asf_muxer_select="riffenc"
2844 asf_stream_muxer_select="asf_muxer"
2845 avi_demuxer_select="iso_media riffdec exif"
2846 avi_muxer_select="riffenc"
2847 avisynth_demuxer_deps="avisynth"
2848 avisynth_demuxer_select="riffdec"
2849 caf_demuxer_select="iso_media riffdec"
2850 dash_muxer_select="mp4_muxer"
2851 dirac_demuxer_select="dirac_parser"
2852 dts_demuxer_select="dca_parser"
2853 dtshd_demuxer_select="dca_parser"
2854 dv_demuxer_select="dvprofile"
2855 dv_muxer_select="dvprofile"
2856 dxa_demuxer_select="riffdec"
2857 eac3_demuxer_select="ac3_parser"
2858 f4v_muxer_select="mov_muxer"
2859 fifo_muxer_deps="threads"
2860 flac_demuxer_select="flac_parser"
2861 hds_muxer_select="flv_muxer"
2862 hls_muxer_select="mpegts_muxer"
2863 image2_alias_pix_demuxer_select="image2_demuxer"
2864 image2_brender_pix_demuxer_select="image2_demuxer"
2865 ipod_muxer_select="mov_muxer"
2866 ismv_muxer_select="mov_muxer"
2867 libnut_demuxer_deps="libnut"
2868 libnut_muxer_deps="libnut"
2869 matroska_audio_muxer_select="matroska_muxer"
2870 matroska_demuxer_select="iso_media riffdec"
2871 matroska_demuxer_suggest="bzlib lzo zlib"
2872 matroska_muxer_select="iso_media riffenc"
2873 mmf_muxer_select="riffenc"
2874 mov_demuxer_select="iso_media riffdec"
2875 mov_demuxer_suggest="zlib"
2876 mov_muxer_select="iso_media riffenc rtpenc_chain"
2877 mp3_demuxer_select="mpegaudio_parser"
2878 mp4_muxer_select="mov_muxer"
2879 mpegts_demuxer_select="iso_media"
2880 mpegts_muxer_select="adts_muxer latm_muxer"
2881 mpegtsraw_demuxer_select="mpegts_demuxer"
2882 mxf_d10_muxer_select="mxf_muxer"
2883 mxf_opatom_muxer_select="mxf_muxer"
2884 nut_muxer_select="riffenc"
2885 nuv_demuxer_select="riffdec"
2886 oga_muxer_select="ogg_muxer"
2887 ogg_demuxer_select="dirac_parse"
2888 ogv_muxer_select="ogg_muxer"
2889 opus_muxer_select="ogg_muxer"
2890 psp_muxer_select="mov_muxer"
2891 rtp_demuxer_select="sdp_demuxer"
2892 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
2893 rtsp_demuxer_select="http_protocol rtpdec"
2894 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2895 sap_demuxer_select="sdp_demuxer"
2896 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2897 sdp_demuxer_select="rtpdec"
2898 smoothstreaming_muxer_select="ismv_muxer"
2899 spdif_muxer_select="aac_parser"
2900 spx_muxer_select="ogg_muxer"
2901 swf_demuxer_suggest="zlib"
2902 tak_demuxer_select="tak_parser"
2903 tg2_muxer_select="mov_muxer"
2904 tgp_muxer_select="mov_muxer"
2905 vobsub_demuxer_select="mpegps_demuxer"
2906 w64_demuxer_select="wav_demuxer"
2907 w64_muxer_select="wav_muxer"
2908 wav_demuxer_select="riffdec"
2909 wav_muxer_select="riffenc"
2910 webm_muxer_select="iso_media riffenc"
2911 webm_dash_manifest_demuxer_select="matroska_demuxer"
2912 wtv_demuxer_select="mpegts_demuxer riffdec"
2913 wtv_muxer_select="mpegts_muxer riffenc"
2914 xmv_demuxer_select="riffdec"
2915 xwma_demuxer_select="riffdec"
2916
2917 # indevs / outdevs
2918 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2919 alsa_outdev_deps="alsa_asoundlib_h"
2920 avfoundation_indev_extralibs="-framework CoreVideo -framework Foundation -framework AVFoundation -framework CoreMedia"
2921 avfoundation_indev_select="avfoundation"
2922 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2923 caca_outdev_deps="libcaca"
2924 decklink_indev_deps="decklink pthreads"
2925 decklink_indev_extralibs="-lstdc++"
2926 decklink_outdev_deps="decklink pthreads"
2927 decklink_outdev_extralibs="-lstdc++"
2928 dshow_indev_deps="IBaseFilter"
2929 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
2930 dv1394_indev_deps="dv1394"
2931 dv1394_indev_select="dv_demuxer"
2932 fbdev_indev_deps="linux_fb_h"
2933 fbdev_outdev_deps="linux_fb_h"
2934 gdigrab_indev_deps="CreateDIBSection"
2935 gdigrab_indev_extralibs="-lgdi32"
2936 gdigrab_indev_select="bmp_decoder"
2937 iec61883_indev_deps="libiec61883"
2938 jack_indev_deps="jack_jack_h"
2939 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
2940 lavfi_indev_deps="avfilter"
2941 libcdio_indev_deps="libcdio"
2942 libdc1394_indev_deps="libdc1394"
2943 libv4l2_indev_deps="libv4l2"
2944 openal_indev_deps="openal"
2945 opengl_outdev_deps="opengl"
2946 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2947 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2948 pulse_indev_deps="libpulse"
2949 pulse_outdev_deps="libpulse"
2950 qtkit_indev_extralibs="-framework QTKit -framework Foundation -framework QuartzCore"
2951 qtkit_indev_select="qtkit"
2952 sdl2_outdev_deps="sdl2"
2953 sndio_indev_deps="sndio_h"
2954 sndio_outdev_deps="sndio_h"
2955 v4l_indev_deps="linux_videodev_h"
2956 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2957 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
2958 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2959 vfwcap_indev_extralibs="-lavicap32"
2960 x11grab_indev_deps="x11grab"
2961 x11grab_xcb_indev_deps="libxcb"
2962 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
2963 xv_outdev_extralibs="-lXv -lX11 -lXext"
2964
2965 # protocols
2966 async_protocol_deps="threads"
2967 bluray_protocol_deps="libbluray"
2968 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2969 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
2970 ffrtmpcrypt_protocol_select="tcp_protocol"
2971 ffrtmphttp_protocol_deps="!librtmp_protocol"
2972 ffrtmphttp_protocol_select="http_protocol"
2973 ftp_protocol_select="tcp_protocol"
2974 gopher_protocol_select="network"
2975 http_protocol_select="tcp_protocol"
2976 httpproxy_protocol_select="tcp_protocol"
2977 https_protocol_select="tls_protocol"
2978 icecast_protocol_select="http_protocol"
2979 librtmp_protocol_deps="librtmp"
2980 librtmpe_protocol_deps="librtmp"
2981 librtmps_protocol_deps="librtmp"
2982 librtmpt_protocol_deps="librtmp"
2983 librtmpte_protocol_deps="librtmp"
2984 libsmbclient_protocol_deps="libsmbclient gplv3"
2985 libssh_protocol_deps="libssh"
2986 mmsh_protocol_select="http_protocol"
2987 mmst_protocol_select="network"
2988 rtmp_protocol_deps="!librtmp_protocol"
2989 rtmp_protocol_select="tcp_protocol"
2990 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2991 rtmps_protocol_deps="!librtmp_protocol"
2992 rtmps_protocol_select="tls_protocol"
2993 rtmpt_protocol_select="ffrtmphttp_protocol"
2994 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2995 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2996 rtp_protocol_select="udp_protocol"
2997 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
2998 sctp_protocol_select="network"
2999 srtp_protocol_select="rtp_protocol srtp"
3000 tcp_protocol_select="network"
3001 tls_gnutls_protocol_deps="gnutls !tls_schannel_protocol !tls_securetransport_protocol"
3002 tls_gnutls_protocol_select="tcp_protocol"
3003 tls_openssl_protocol_deps="openssl !tls_schannel_protocol !tls_securetransport_protocol !tls_gnutls_protocol"
3004 tls_openssl_protocol_select="tcp_protocol"
3005 tls_schannel_protocol_deps="schannel"
3006 tls_schannel_protocol_select="tcp_protocol"
3007 tls_securetransport_protocol_deps="securetransport"
3008 tls_securetransport_protocol_select="tcp_protocol"
3009 tls_protocol_deps_any="tls_schannel_protocol tls_securetransport_protocol tls_gnutls_protocol tls_openssl_protocol"
3010 udp_protocol_select="network"
3011 udplite_protocol_select="network"
3012 unix_protocol_deps="sys_un_h"
3013 unix_protocol_select="network"
3014
3015 # filters
3016 afftfilt_filter_deps="avcodec"
3017 afftfilt_filter_select="fft"
3018 amovie_filter_deps="avcodec avformat"
3019 aresample_filter_deps="swresample"
3020 ass_filter_deps="libass"
3021 asyncts_filter_deps="avresample"
3022 atempo_filter_deps="avcodec"
3023 atempo_filter_select="rdft"
3024 azmq_filter_deps="libzmq"
3025 blackframe_filter_deps="gpl"
3026 boxblur_filter_deps="gpl"
3027 bs2b_filter_deps="libbs2b"
3028 colormatrix_filter_deps="gpl"
3029 cover_rect_filter_deps="avcodec avformat gpl"
3030 cropdetect_filter_deps="gpl"
3031 delogo_filter_deps="gpl"
3032 deshake_filter_select="pixelutils"
3033 drawtext_filter_deps="libfreetype"
3034 ebur128_filter_deps="gpl"
3035 eq_filter_deps="gpl"
3036 fftfilt_filter_deps="avcodec"
3037 fftfilt_filter_select="rdft"
3038 find_rect_filter_deps="avcodec avformat gpl"
3039 firequalizer_filter_deps="avcodec"
3040 firequalizer_filter_select="rdft"
3041 flite_filter_deps="libflite"
3042 framerate_filter_select="pixelutils"
3043 frei0r_filter_deps="frei0r dlopen"
3044 frei0r_src_filter_deps="frei0r dlopen"
3045 fspp_filter_deps="gpl"
3046 geq_filter_deps="gpl"
3047 histeq_filter_deps="gpl"
3048 hqdn3d_filter_deps="gpl"
3049 interlace_filter_deps="gpl"
3050 kerndeint_filter_deps="gpl"
3051 ladspa_filter_deps="ladspa dlopen"
3052 loudnorm_filter_deps="libebur128"
3053 mcdeint_filter_deps="avcodec gpl"
3054 movie_filter_deps="avcodec avformat"
3055 mpdecimate_filter_deps="gpl"
3056 mpdecimate_filter_select="pixelutils"
3057 mptestsrc_filter_deps="gpl"
3058 negate_filter_deps="lut_filter"
3059 nnedi_filter_deps="gpl"
3060 ocr_filter_deps="libtesseract"
3061 ocv_filter_deps="libopencv"
3062 owdenoise_filter_deps="gpl"
3063 pan_filter_deps="swresample"
3064 perspective_filter_deps="gpl"
3065 phase_filter_deps="gpl"
3066 pp7_filter_deps="gpl"
3067 pp_filter_deps="gpl postproc"
3068 pullup_filter_deps="gpl"
3069 removelogo_filter_deps="avcodec avformat swscale"
3070 repeatfields_filter_deps="gpl"
3071 resample_filter_deps="avresample"
3072 rubberband_filter_deps="librubberband"
3073 sab_filter_deps="gpl swscale"
3074 scale2ref_filter_deps="swscale"
3075 scale_filter_deps="swscale"
3076 select_filter_select="pixelutils"
3077 showcqt_filter_deps="avcodec avformat swscale"
3078 showcqt_filter_select="fft"
3079 showfreqs_filter_deps="avcodec"
3080 showfreqs_filter_select="fft"
3081 showspectrum_filter_deps="avcodec"
3082 showspectrum_filter_select="fft"
3083 showspectrumpic_filter_deps="avcodec"
3084 showspectrumpic_filter_select="fft"
3085 smartblur_filter_deps="gpl swscale"
3086 sofalizer_filter_deps="netcdf avcodec"
3087 sofalizer_filter_select="fft"
3088 spectrumsynth_filter_deps="avcodec"
3089 spectrumsynth_filter_select="fft"
3090 spp_filter_deps="gpl avcodec"
3091 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3092 stereo3d_filter_deps="gpl"
3093 subtitles_filter_deps="avformat avcodec libass"
3094 super2xsai_filter_deps="gpl"
3095 pixfmts_super2xsai_test_deps="super2xsai_filter"
3096 tinterlace_filter_deps="gpl"
3097 tinterlace_merge_test_deps="tinterlace_filter"
3098 tinterlace_pad_test_deps="tinterlace_filter"
3099 uspp_filter_deps="gpl avcodec"
3100 vaguedenoiser_filter_deps="gpl"
3101 vidstabdetect_filter_deps="libvidstab"
3102 vidstabtransform_filter_deps="libvidstab"
3103 zmq_filter_deps="libzmq"
3104 zoompan_filter_deps="swscale"
3105 zscale_filter_deps="libzimg"
3106 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3107
3108 # examples
3109 avio_dir_cmd_deps="avformat avutil"
3110 avio_reading_deps="avformat avcodec avutil"
3111 decoding_encoding_example_deps="avcodec avformat avutil"
3112 demuxing_decoding_example_deps="avcodec avformat avutil"
3113 extract_mvs_example_deps="avcodec avformat avutil"
3114 filter_audio_example_deps="avfilter avutil"
3115 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3116 filtering_video_example_deps="avfilter avcodec avformat avutil"
3117 http_multiclient_example_deps="avformat avutil"
3118 metadata_example_deps="avformat avutil"
3119 muxing_example_deps="avcodec avformat avutil swscale"
3120 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder vaapi_x11"
3121 remuxing_example_deps="avcodec avformat avutil"
3122 resampling_audio_example_deps="avutil swresample"
3123 scaling_video_example_deps="avutil swscale"
3124 transcode_aac_example_deps="avcodec avformat swresample"
3125 transcoding_example_deps="avfilter avcodec avformat avutil"
3126
3127 # libraries, in linking order
3128 avcodec_deps="avutil"
3129 avdevice_deps="avformat avcodec avutil"
3130 avfilter_deps="avutil"
3131 avformat_deps="avcodec avutil"
3132 avresample_deps="avutil"
3133 postproc_deps="avutil gpl"
3134 swresample_deps="avutil"
3135 swscale_deps="avutil"
3136
3137 # programs
3138 ffmpeg_deps="avcodec avfilter avformat swresample"
3139 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3140                null_filter
3141                setpts_filter trim_filter"
3142 ffplay_deps="avcodec avformat swscale swresample sdl2"
3143 ffplay_libs='$sdl2_libs'
3144 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3145 ffprobe_deps="avcodec avformat"
3146 ffserver_deps="avformat fork sarestart"
3147 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
3148
3149 # documentation
3150 podpages_deps="perl"
3151 manpages_deps="perl pod2man"
3152 htmlpages_deps="perl"
3153 htmlpages_deps_any="makeinfo_html texi2html"
3154 txtpages_deps="perl makeinfo"
3155 doc_deps_any="manpages htmlpages podpages txtpages"
3156
3157 # default parameters
3158
3159 logfile="config.log"
3160
3161 # installation paths
3162 prefix_default="/usr/local"
3163 bindir_default='${prefix}/bin'
3164 datadir_default='${prefix}/share/ffmpeg'
3165 docdir_default='${prefix}/share/doc/ffmpeg'
3166 incdir_default='${prefix}/include'
3167 libdir_default='${prefix}/lib'
3168 mandir_default='${prefix}/share/man'
3169
3170 # toolchain
3171 ar_default="ar"
3172 cc_default="gcc"
3173 cxx_default="g++"
3174 host_cc_default="gcc"
3175 cp_f="cp -f"
3176 doxygen_default="doxygen"
3177 install="install"
3178 ln_s_default="ln -s -f"
3179 nm_default="nm -g"
3180 objformat="elf"
3181 pkg_config_default=pkg-config
3182 ranlib_default="ranlib"
3183 strip_default="strip"
3184 version_script='--version-script'
3185 yasmexe_default="yasm"
3186 windres_default="windres"
3187
3188 # OS
3189 target_os_default=$(tolower $(uname -s))
3190 host_os=$target_os_default
3191
3192 # machine
3193 if test "$target_os_default" = aix; then
3194     arch_default=$(uname -p)
3195     strip_default="strip -X32_64"
3196 else
3197     arch_default=$(uname -m)
3198 fi
3199 cpu="generic"
3200 intrinsics="none"
3201
3202 # configurable options
3203 enable $PROGRAM_LIST
3204 enable $DOCUMENT_LIST
3205 enable $EXAMPLE_LIST
3206 enable $(filter_out avresample $LIBRARY_LIST)
3207 enable stripping
3208
3209 enable asm
3210 enable debug
3211 enable doc
3212 enable faan faandct faanidct
3213 enable optimizations
3214 enable runtime_cpudetect
3215 enable safe_bitstream_reader
3216 enable static
3217 enable swscale_alpha
3218 enable valgrind_backtrace
3219
3220 sws_max_filter_size_default=256
3221 set_default sws_max_filter_size
3222
3223 # Enable platform codecs by default.
3224 enable audiotoolbox
3225
3226 # Enable hwaccels by default.
3227 enable d3d11va dxva2 vaapi vda vdpau videotoolbox_hwaccel xvmc
3228 enable xlib
3229
3230 enable nvenc vda_framework videotoolbox videotoolbox_encoder
3231
3232 # build settings
3233 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3234 LIBPREF="lib"
3235 LIBSUF=".a"
3236 FULLNAME='$(NAME)$(BUILDSUF)'
3237 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3238 SLIBPREF="lib"
3239 SLIBSUF=".so"
3240 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3241 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3242 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3243 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3244 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3245 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3246 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
3247
3248 asflags_filter=echo
3249 cflags_filter=echo
3250 ldflags_filter=echo
3251
3252 AS_C='-c'
3253 AS_O='-o $@'
3254 CC_C='-c'
3255 CC_E='-E -o $@'
3256 CC_O='-o $@'
3257 CXX_C='-c'
3258 CXX_O='-o $@'
3259 OBJCC_C='-c'
3260 OBJCC_E='-E -o $@'
3261 OBJCC_O='-o $@'
3262 LD_O='-o $@'
3263 LD_LIB='-l%'
3264 LD_PATH='-L'
3265 HOSTCC_C='-c'
3266 HOSTCC_E='-E -o $@'
3267 HOSTCC_O='-o $@'
3268 HOSTLD_O='-o $@'
3269
3270 host_libs='-lm'
3271 host_cflags_filter=echo
3272 host_ldflags_filter=echo
3273
3274 target_path='$(CURDIR)'
3275
3276 # since the object filename is not given with the -MM flag, the compiler
3277 # is only able to print the basename, and we must add the path ourselves
3278 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3279 DEPFLAGS='-MM'
3280
3281 # find source path
3282 if test -f configure; then
3283     source_path=.
3284 else
3285     source_path=$(cd $(dirname "$0"); pwd)
3286     case "$source_path" in
3287         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3288     esac
3289     test -e "$source_path/config.h" &&
3290         die "Out of tree builds are impossible with config.h in source dir."
3291 fi
3292
3293 for v in "$@"; do
3294     r=${v#*=}
3295     l=${v%"$r"}
3296     r=$(sh_quote "$r")
3297     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3298 done
3299
3300 find_things(){
3301     thing=$1
3302     pattern=$2
3303     file=$source_path/$3
3304     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
3305 }
3306
3307 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
3308 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
3309 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
3310 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
3311 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
3312 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
3313 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
3314 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
3315 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
3316
3317 find_things_extern(){
3318     thing=$1
3319     pattern=$2
3320     file=$source_path/$3
3321     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
3322 }
3323
3324 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3325 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3326
3327 ALL_COMPONENTS="
3328     $BSF_LIST
3329     $DECODER_LIST
3330     $DEMUXER_LIST
3331     $ENCODER_LIST
3332     $FILTER_LIST
3333     $HWACCEL_LIST
3334     $INDEV_LIST
3335     $MUXER_LIST
3336     $OUTDEV_LIST
3337     $PARSER_LIST
3338     $PROTOCOL_LIST
3339 "
3340
3341 for n in $COMPONENT_LIST; do
3342     v=$(toupper ${n%s})_LIST
3343     eval enable \$$v
3344     eval ${n}_if_any="\$$v"
3345 done
3346
3347 enable $ARCH_EXT_LIST
3348
3349 die_unknown(){
3350     echo "Unknown option \"$1\"."
3351     echo "See $0 --help for available options."
3352     exit 1
3353 }
3354
3355 print_in_columns() {
3356     cols=$(expr $ncols / 24)
3357     cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
3358 }
3359
3360 show_list() {
3361     suffix=_$1
3362     shift
3363     echo $* | sed s/$suffix//g | print_in_columns
3364     exit 0
3365 }
3366
3367 rand_list(){
3368     IFS=', '
3369     set -- $*
3370     unset IFS
3371     for thing; do
3372         comp=${thing%:*}
3373         prob=${thing#$comp}
3374         prob=${prob#:}
3375         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3376         echo "prob ${prob:-0.5}"
3377         printf '%s\n' $comp
3378     done
3379 }
3380
3381 do_random(){
3382     action=$1
3383     shift
3384     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3385     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3386 }
3387
3388 for opt do
3389     optval="${opt#*=}"
3390     case "$opt" in
3391         --extra-ldflags=*)
3392             add_ldflags $optval
3393         ;;
3394         --extra-ldexeflags=*)
3395             add_ldexeflags $optval
3396         ;;
3397         --extra-ldlibflags=*)
3398             add_ldlibflags $optval
3399         ;;
3400         --extra-libs=*)
3401             add_extralibs $optval
3402         ;;
3403         --disable-devices)
3404             disable $INDEV_LIST $OUTDEV_LIST
3405         ;;
3406         --enable-debug=*)
3407             debuglevel="$optval"
3408         ;;
3409         --disable-programs)
3410             disable $PROGRAM_LIST
3411         ;;
3412         --disable-everything)
3413             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3414         ;;
3415         --disable-all)
3416             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3417             disable $LIBRARY_LIST $PROGRAM_LIST doc
3418             enable avutil
3419         ;;
3420         --enable-random|--disable-random)
3421             action=${opt%%-random}
3422             do_random ${action#--} $COMPONENT_LIST
3423         ;;
3424         --enable-random=*|--disable-random=*)
3425             action=${opt%%-random=*}
3426             do_random ${action#--} $optval
3427         ;;
3428         --enable-*=*|--disable-*=*)
3429             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3430             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3431             eval list=\$$(toupper $thing)_LIST
3432             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3433             list=$(filter "$name" $list)
3434             [ "$list" = "" ] && warn "Option $opt did not match anything"
3435             $action $list
3436         ;;
3437         --enable-?*|--disable-?*)
3438             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3439             if is_in $option $COMPONENT_LIST; then
3440                 test $action = disable && action=unset
3441                 eval $action \$$(toupper ${option%s})_LIST
3442             elif is_in $option $CMDLINE_SELECT; then
3443                 $action $option
3444             else
3445                 die_unknown $opt
3446             fi
3447         ;;
3448         --list-*)
3449             NAME="${opt#--list-}"
3450             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3451             NAME=${NAME%s}
3452             eval show_list $NAME \$$(toupper $NAME)_LIST
3453         ;;
3454         --help|-h) show_help
3455         ;;
3456         --fatal-warnings) enable fatal_warnings
3457         ;;
3458         *)
3459             optname="${opt%%=*}"
3460             optname="${optname#--}"
3461             optname=$(echo "$optname" | sed 's/-/_/g')
3462             if is_in $optname $CMDLINE_SET; then
3463                 eval $optname='$optval'
3464             elif is_in $optname $CMDLINE_APPEND; then
3465                 append $optname "$optval"
3466             else
3467                 die_unknown $opt
3468             fi
3469         ;;
3470     esac
3471 done
3472
3473 for e in $env; do
3474     eval "export $e"
3475 done
3476
3477 disabled logging && logfile=/dev/null
3478
3479 # Disable all the library-specific components if the library itself
3480 # is disabled, see AVCODEC_LIST and following _LIST variables.
3481
3482 disable_components(){
3483     disabled ${1} && disable $(
3484         eval components="\$$(toupper ${1})_COMPONENTS"
3485         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
3486     )
3487 }
3488
3489 map 'disable_components $v' $LIBRARY_LIST
3490
3491 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
3492 set >> $logfile
3493
3494 test -n "$valgrind" && toolchain="valgrind-memcheck"
3495
3496 case "$toolchain" in
3497     *-asan)
3498         cc_default="${toolchain%-asan}"
3499         add_cflags  -fsanitize=address
3500         add_ldflags -fsanitize=address
3501     ;;
3502     *-msan)
3503         cc_default="${toolchain%-msan}"
3504         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
3505         add_ldflags -fsanitize=memory
3506     ;;
3507     *-tsan)
3508         cc_default="${toolchain%-tsan}"
3509         add_cflags  -fsanitize=thread -pie
3510         add_ldflags -fsanitize=thread -pie
3511         case "$toolchain" in
3512             gcc-tsan)
3513                 add_cflags  -fPIC
3514                 add_ldflags -fPIC
3515                 ;;
3516         esac
3517     ;;
3518     *-usan)
3519         cc_default="${toolchain%-usan}"
3520         add_cflags  -fsanitize=undefined
3521         add_ldflags -fsanitize=undefined
3522     ;;
3523     valgrind-*)
3524         target_exec_default="valgrind"
3525         case "$toolchain" in
3526             valgrind-massif)
3527                 target_exec_args="--tool=massif --alloc-fn=av_malloc --alloc-fn=av_mallocz --alloc-fn=av_calloc --alloc-fn=av_fast_padded_malloc --alloc-fn=av_fast_malloc --alloc-fn=av_realloc_f --alloc-fn=av_fast_realloc --alloc-fn=av_realloc"
3528                 ;;
3529             valgrind-memcheck)
3530                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3531                 ;;
3532         esac
3533     ;;
3534     msvc)
3535         # Check whether the current MSVC version needs the C99 converter.
3536         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3537         # support enough of C99 to build ffmpeg. Default to the new
3538         # behaviour if the regexp was unable to match anything, since this
3539         # successfully parses the version number of existing supported
3540         # versions that require the converter (MSVC 2010 and 2012).
3541         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3542         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3543             cc_default="cl"
3544         else
3545             cc_default="c99wrap cl"
3546         fi
3547         ld_default="$source_path/compat/windows/mslink"
3548         nm_default="dumpbin -symbols"
3549         ar_default="lib"
3550         case "$arch" in
3551         arm*)
3552             as_default="armasm"
3553             ;;
3554         esac
3555         target_os_default="win32"
3556         # Use a relative path for TMPDIR. This makes sure all the
3557         # ffconf temp files are written with a relative path, avoiding
3558         # issues with msys/win32 path conversion for MSVC parameters
3559         # such as -Fo<file> or -out:<file>.
3560         TMPDIR=.
3561     ;;
3562     icl)
3563         cc_default="icl"
3564         ld_default="xilink"
3565         nm_default="dumpbin -symbols"
3566         ar_default="xilib"
3567         target_os_default="win32"
3568         TMPDIR=.
3569     ;;
3570     gcov)
3571         add_cflags  -fprofile-arcs -ftest-coverage
3572         add_ldflags -fprofile-arcs -ftest-coverage
3573     ;;
3574     llvm-cov)
3575         add_cflags -fprofile-arcs -ftest-coverage
3576         add_ldflags --coverage
3577     ;;
3578     hardened)
3579         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3580         add_cflags   -fno-strict-overflow -fstack-protector-all
3581         add_ldflags  -Wl,-z,relro -Wl,-z,now
3582     ;;
3583     ?*)
3584         die "Unknown toolchain $toolchain"
3585     ;;
3586 esac
3587
3588 test -n "$cross_prefix" && enable cross_compile
3589
3590 if enabled cross_compile; then
3591     test -n "$arch" && test -n "$target_os" ||
3592         die "Must specify target arch and OS when cross-compiling"
3593 fi
3594
3595 ar_default="${cross_prefix}${ar_default}"
3596 cc_default="${cross_prefix}${cc_default}"
3597 cxx_default="${cross_prefix}${cxx_default}"
3598 nm_default="${cross_prefix}${nm_default}"
3599 pkg_config_default="${cross_prefix}${pkg_config_default}"
3600 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
3601     ranlib_default="${cross_prefix}${ranlib_default} -D"
3602 else
3603     ranlib_default="${cross_prefix}${ranlib_default}"
3604 fi
3605 strip_default="${cross_prefix}${strip_default}"
3606 windres_default="${cross_prefix}${windres_default}"
3607
3608 sysinclude_default="${sysroot}/usr/include"
3609
3610 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3611     target_exec target_os yasmexe
3612 enabled cross_compile || host_cc_default=$cc
3613 set_default host_cc
3614
3615 pkg_config_fail_message=""
3616 if ! $pkg_config --version >/dev/null 2>&1; then
3617     warn "$pkg_config not found, library detection may fail."
3618     pkg_config=false
3619 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
3620     pkg_config_fail_message="
3621 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
3622 fi
3623
3624 if test $doxygen != $doxygen_default && \
3625   ! $doxygen --version >/dev/null 2>&1; then
3626     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3627 fi
3628
3629 exesuf() {
3630     case $1 in
3631         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3632     esac
3633 }
3634
3635 EXESUF=$(exesuf $target_os)
3636 HOSTEXESUF=$(exesuf $host_os)
3637
3638 # set temporary file name
3639 : ${TMPDIR:=$TEMPDIR}
3640 : ${TMPDIR:=$TMP}
3641 : ${TMPDIR:=/tmp}
3642
3643 if [ -n "$tempprefix" ] ; then
3644     mktemp(){
3645         echo $tempprefix.${HOSTNAME}.${UID}
3646     }
3647 elif ! check_cmd mktemp -u XXXXXX; then
3648     # simple replacement for missing mktemp
3649     # NOT SAFE FOR GENERAL USE
3650     mktemp(){
3651         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3652     }
3653 fi
3654
3655 tmpfile(){
3656     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
3657         (set -C; exec > $tmp) 2>/dev/null ||
3658         die "Unable to create temporary file in $TMPDIR."
3659     append TMPFILES $tmp
3660     eval $1=$tmp
3661 }
3662
3663 trap 'rm -f -- $TMPFILES' EXIT
3664
3665 tmpfile TMPASM .asm
3666 tmpfile TMPC   .c
3667 tmpfile TMPCPP .cpp
3668 tmpfile TMPE   $EXESUF
3669 tmpfile TMPH   .h
3670 tmpfile TMPM   .m
3671 tmpfile TMPO   .o
3672 tmpfile TMPS   .S
3673 tmpfile TMPSH  .sh
3674 tmpfile TMPV   .ver
3675
3676 unset -f mktemp
3677
3678 chmod +x $TMPE
3679
3680 # make sure we can execute files in $TMPDIR
3681 cat > $TMPSH 2>> $logfile <<EOF
3682 #! /bin/sh
3683 EOF
3684 chmod +x $TMPSH >> $logfile 2>&1
3685 if ! $TMPSH >> $logfile 2>&1; then
3686     cat <<EOF
3687 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3688 variable to another directory and make sure that it is not mounted noexec.
3689 EOF
3690     die "Sanity test failed."
3691 fi
3692
3693 armasm_flags(){
3694     for flag; do
3695         case $flag in
3696             # Filter out MSVC cl.exe options from cflags that shouldn't
3697             # be passed to gas-preprocessor
3698             -M[TD]*)                                            ;;
3699             *)                  echo $flag                      ;;
3700         esac
3701    done
3702 }
3703
3704 ccc_flags(){
3705     for flag; do
3706         case $flag in
3707             -std=c99)           echo -c99                       ;;
3708             -mcpu=*)            echo -arch ${flag#*=}           ;;
3709             -mieee)             echo -ieee                      ;;
3710             -O*|-fast)          echo $flag                      ;;
3711             -fno-math-errno)    echo -assume nomath_errno       ;;
3712             -g)                 echo -g3                        ;;
3713             -Wall)              echo -msg_enable level2         ;;
3714             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
3715             -Wl,*)              echo $flag                      ;;
3716             -f*|-W*)                                            ;;
3717             *)                  echo $flag                      ;;
3718         esac
3719    done
3720 }
3721
3722 cparser_flags(){
3723     for flag; do
3724         case $flag in
3725             -Wno-switch)             echo -Wno-switch-enum ;;
3726             -Wno-format-zero-length) ;;
3727             -Wdisabled-optimization) ;;
3728             -Wno-pointer-sign)       echo -Wno-other ;;
3729             *)                       echo $flag ;;
3730         esac
3731     done
3732 }
3733
3734 msvc_common_flags(){
3735     for flag; do
3736         case $flag in
3737             # In addition to specifying certain flags under the compiler
3738             # specific filters, they must be specified here as well or else the
3739             # generic catch all at the bottom will print the original flag.
3740             -Wall)                ;;
3741             -std=c99)             ;;
3742             # Common flags
3743             -fomit-frame-pointer) ;;
3744             -g)                   echo -Z7 ;;
3745             -fno-math-errno)      ;;
3746             -fno-common)          ;;
3747             -fno-signed-zeros)    ;;
3748             -fPIC)                ;;
3749             -mthumb)              ;;
3750             -march=*)             ;;
3751             -lz)                  echo zlib.lib ;;
3752             -lavifil32)           echo vfw32.lib ;;
3753             -lavicap32)           echo vfw32.lib user32.lib ;;
3754             -lx264)               echo libx264.lib ;;
3755             -l*)                  echo ${flag#-l}.lib ;;
3756             -LARGEADDRESSAWARE)   echo $flag ;;
3757             -L*)                  echo -libpath:${flag#-L} ;;
3758             *)                    echo $flag ;;
3759         esac
3760     done
3761 }
3762
3763 msvc_flags(){
3764     msvc_common_flags "$@"
3765     for flag; do
3766         case $flag in
3767             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3768                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3769                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3770                                        -wd4307 \
3771                                        -wd4273 -wd4554 -wd4701 ;;
3772         esac
3773     done
3774 }
3775
3776 icl_flags(){
3777     msvc_common_flags "$@"
3778     for flag; do
3779         case $flag in
3780             # Despite what Intel's documentation says -Wall, which is supported
3781             # on Windows, does enable remarks so disable them here.
3782             -Wall)                echo $flag -Qdiag-disable:remark ;;
3783             -std=c99)             echo -Qstd=c99 ;;
3784             -flto)                echo -ipo ;;
3785         esac
3786     done
3787 }
3788
3789 icc_flags(){
3790     for flag; do
3791         case $flag in
3792             -flto)                echo -ipo ;;
3793             *)                    echo $flag ;;
3794         esac
3795     done
3796 }
3797
3798 pgi_flags(){
3799     for flag; do
3800         case $flag in
3801             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3802             -fomit-frame-pointer) echo -Mnoframe ;;
3803             -g)                   echo -gopt ;;
3804             *)                    echo $flag ;;
3805         esac
3806     done
3807 }
3808
3809 suncc_flags(){
3810     for flag; do
3811         case $flag in
3812             -march=*|-mcpu=*)
3813                 case "${flag#*=}" in
3814                     native)                   echo -xtarget=native       ;;
3815                     v9|niagara)               echo -xarch=sparc          ;;
3816                     ultrasparc)               echo -xarch=sparcvis       ;;
3817                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3818                     i586|pentium)             echo -xchip=pentium        ;;
3819                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3820                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3821                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3822                     pentium4*)          echo -xtarget=pentium4           ;;
3823                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3824                     *-sse3)             echo -xarch=sse3                 ;;
3825                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3826                     bonnell)                   echo -xarch=ssse3         ;;
3827                     corei7|nehalem)            echo -xtarget=nehalem     ;;
3828                     westmere)                  echo -xtarget=westmere    ;;
3829                     silvermont)                echo -xarch=sse4_2        ;;
3830                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
3831                     core-avx*|ivybridge|haswell|broadwell|skylake*|knl)
3832                                                echo -xarch=avx           ;;
3833                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
3834                     btver1)                    echo -xarch=amdsse4a      ;;
3835                     btver2|bdver*|znver*)      echo -xarch=avx           ;;
3836                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3837                     k8|opteron|athlon64|athlon-fx)
3838                                                echo -xarch=sse2a         ;;
3839                     athlon*)                   echo -xarch=pentium_proa  ;;
3840                 esac
3841                 ;;
3842             -std=c99)             echo -xc99              ;;
3843             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3844             -fPIC)                echo -KPIC -xcode=pic32 ;;
3845             -W*,*)                echo $flag              ;;
3846             -f*-*|-W*|-mimpure-text)                      ;;
3847             -shared)              echo -G                 ;;
3848             *)                    echo $flag              ;;
3849         esac
3850     done
3851 }
3852
3853 tms470_flags(){
3854     for flag; do
3855         case $flag in
3856             -march=*|-mcpu=*)
3857                 case "${flag#*=}" in
3858                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3859                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3860                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3861                     armv6*|arm11*)          echo -mv=6   ;;
3862                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3863                                             echo -mv=5e  ;;
3864                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3865                 esac
3866                 ;;
3867             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3868             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3869             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3870             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3871             -msoft-float)   echo --float_support=vfplib       ;;
3872             -O[0-3]|-mf=*)  echo $flag                        ;;
3873             -g)             echo -g -mn                       ;;
3874             -pds=*)         echo $flag                        ;;
3875             -D*|-I*)        echo $flag                        ;;
3876             --gcc|--abi=*)  echo $flag                        ;;
3877             -me)            echo $flag                        ;;
3878         esac
3879     done
3880 }
3881
3882 probe_cc(){
3883     pfx=$1
3884     _cc=$2
3885     first=$3
3886
3887     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3888     unset _ld_o _ldflags _ld_lib _ld_path
3889     unset _depflags _DEPCMD _DEPFLAGS
3890     _flags_filter=echo
3891
3892     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
3893         true # no-op to avoid reading stdin in following checks
3894     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3895         _type=llvm_gcc
3896         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
3897         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
3898         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3899         _cflags_speed='-O3'
3900         _cflags_size='-Os'
3901     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3902         _type=gcc
3903         gcc_version=$($_cc --version | head -n1)
3904         gcc_basever=$($_cc -dumpversion)
3905         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3906         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3907         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3908         case $gcc_basever in
3909             2) ;;
3910             2.*) ;;
3911             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
3912         esac
3913         if [ "$first" = true ]; then
3914             case $gcc_basever in
3915                 4.2*)
3916                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
3917             esac
3918         fi
3919         _cflags_speed='-O3'
3920         _cflags_size='-Os'
3921     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3922         _type=icc
3923         _ident=$($_cc --version | head -n1)
3924         _depflags='-MMD'
3925         _cflags_speed='-O3'
3926         _cflags_size='-Os'
3927         _cflags_noopt='-O1'
3928         _flags_filter=icc_flags
3929     elif $_cc -v 2>&1 | grep -q xlc; then
3930         _type=xlc
3931         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3932         _cflags_speed='-O5'
3933         _cflags_size='-O5 -qcompact'
3934     elif $_cc -V 2>/dev/null | grep -q Compaq; then
3935         _type=ccc
3936         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
3937         _DEPFLAGS='-M'
3938         _cflags_speed='-fast'
3939         _cflags_size='-O1'
3940         _flags_filter=ccc_flags
3941     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
3942         test -d "$sysroot" || die "No valid sysroot specified."
3943         _type=armcc
3944         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
3945         armcc_conf="$PWD/armcc.conf"
3946         $_cc --arm_linux_configure                 \
3947              --arm_linux_config_file="$armcc_conf" \
3948              --configure_sysroot="$sysroot"        \
3949              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
3950              die "Error creating armcc configuration file."
3951         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
3952         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
3953         as_default="${cross_prefix}gcc"
3954         _depflags='-MMD'
3955         _cflags_speed='-O3'
3956         _cflags_size='-Os'
3957     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
3958         _type=tms470
3959         _ident=$($_cc -version | head -n1 | tr -s ' ')
3960         _flags='--gcc --abi=eabi -me'
3961         _cc_e='-ppl -fe=$@'
3962         _cc_o='-fe=$@'
3963         _depflags='-ppa -ppd=$(@:.o=.d)'
3964         _cflags_speed='-O3 -mf=5'
3965         _cflags_size='-O3 -mf=2'
3966         _flags_filter=tms470_flags
3967     elif $_cc -v 2>&1 | grep -q clang; then
3968         _type=clang
3969         _ident=$($_cc --version 2>/dev/null | head -n1)
3970         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3971         _cflags_speed='-O3'
3972         _cflags_size='-Os'
3973     elif $_cc -V 2>&1 | grep -q Sun; then
3974         _type=suncc
3975         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
3976         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3977         _DEPFLAGS='-xM1 -xc99'
3978         _ldflags='-std=c99'
3979         _cflags_speed='-O5'
3980         _cflags_size='-O5 -xspace'
3981         _flags_filter=suncc_flags
3982     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3983         _type=pathscale
3984         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3985         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3986         _cflags_speed='-O2'
3987         _cflags_size='-Os'
3988         _flags_filter='filter_out -Wdisabled-optimization'
3989     elif $_cc -v 2>&1 | grep -q Open64; then
3990         _type=open64
3991         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3992         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3993         _cflags_speed='-O2'
3994         _cflags_size='-Os'
3995         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3996     elif $_cc -V 2>&1 | grep -q Portland; then
3997         _type=pgi
3998         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
3999         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
4000         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
4001         _cflags_size="-O2 -Munroll=c:1 $opt_common"
4002         _cflags_noopt="-O"
4003         _flags_filter=pgi_flags
4004     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
4005         _type=armasm
4006         _ident=$($_cc | head -n1)
4007         # 4509: "This form of conditional instruction is deprecated"
4008         _flags="-nologo -ignore 4509"
4009         _flags_filter=armasm_flags
4010     elif $_cc 2>&1 | grep -q Intel; then
4011         _type=icl
4012         _ident=$($_cc 2>&1 | head -n1)
4013         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
4014         # Not only is O3 broken on 13.x+ but it is slower on all previous
4015         # versions (tested) as well.
4016         _cflags_speed="-O2"
4017         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
4018         if $_cc 2>&1 | grep -q Linker; then
4019             _ld_o='-out:$@'
4020         else
4021             _ld_o='-Fe$@'
4022         fi
4023         _cc_o='-Fo$@'
4024         _cc_e='-P'
4025         _flags_filter=icl_flags
4026         _ld_lib='lib%.a'
4027         _ld_path='-libpath:'
4028         # -Qdiag-error to make icl error when seeing certain unknown arguments
4029         _flags='-nologo -Qdiag-error:4044,10157'
4030         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
4031         # with MSVC which enables it by default.
4032         _cflags='-D_USE_MATH_DEFINES -Qms0 -Qvec- -Qsimd- -GS -fp:precise'
4033         disable stripping
4034     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
4035         _type=msvc
4036         _ident=$($_cc 2>&1 | head -n1)
4037         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
4038         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
4039         _cflags_speed="-O2"
4040         _cflags_size="-O1"
4041         if $_cc -nologo- 2>&1 | grep -q Linker; then
4042             _ld_o='-out:$@'
4043         else
4044             _ld_o='-Fe$@'
4045         fi
4046         _cc_o='-Fo$@'
4047         _cc_e='-P -Fi$@'
4048         _flags_filter=msvc_flags
4049         _ld_lib='lib%.a'
4050         _ld_path='-libpath:'
4051         _flags='-nologo'
4052         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS'
4053         disable stripping
4054     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
4055         _type=cparser
4056         _ident=$($_cc --version | head -n1)
4057         _depflags='-MMD'
4058         _cflags_speed='-O4'
4059         _cflags_size='-O2'
4060         _flags_filter=cparser_flags
4061     fi
4062
4063     eval ${pfx}_type=\$_type
4064     eval ${pfx}_ident=\$_ident
4065 }
4066
4067 set_ccvars(){
4068     eval ${1}_C=\${_cc_c-\${${1}_C}}
4069     eval ${1}_E=\${_cc_e-\${${1}_E}}
4070     eval ${1}_O=\${_cc_o-\${${1}_O}}
4071
4072     if [ -n "$_depflags" ]; then
4073         eval ${1}_DEPFLAGS=\$_depflags
4074     else
4075         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
4076         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
4077         eval DEP${1}FLAGS=\$_flags
4078     fi
4079 }
4080
4081 probe_cc cc "$cc" "true"
4082 cflags_filter=$_flags_filter
4083 cflags_speed=$_cflags_speed
4084 cflags_size=$_cflags_size
4085 cflags_noopt=$_cflags_noopt
4086 add_cflags $_flags $_cflags
4087 cc_ldflags=$_ldflags
4088 set_ccvars CC
4089
4090 probe_cc hostcc "$host_cc"
4091 host_cflags_filter=$_flags_filter
4092 add_host_cflags  $_flags $_cflags
4093 set_ccvars HOSTCC
4094
4095 test -n "$cc_type" && enable $cc_type ||
4096     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4097
4098 : ${as_default:=$cc}
4099 : ${objcc_default:=$cc}
4100 : ${dep_cc_default:=$cc}
4101 : ${ld_default:=$cc}
4102 : ${host_ld_default:=$host_cc}
4103 set_default ar as objcc dep_cc ld ln_s host_ld windres
4104
4105 probe_cc as "$as"
4106 asflags_filter=$_flags_filter
4107 add_asflags $_flags $_cflags
4108 set_ccvars AS
4109
4110 probe_cc objcc "$objcc"
4111 objcflags_filter=$_flags_filter
4112 add_objcflags $_flags $_cflags
4113 set_ccvars OBJC
4114
4115 probe_cc ld "$ld"
4116 ldflags_filter=$_flags_filter
4117 add_ldflags $_flags $_ldflags
4118 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4119 LD_O=${_ld_o-$LD_O}
4120 LD_LIB=${_ld_lib-$LD_LIB}
4121 LD_PATH=${_ld_path-$LD_PATH}
4122
4123 probe_cc hostld "$host_ld"
4124 host_ldflags_filter=$_flags_filter
4125 add_host_ldflags $_flags $_ldflags
4126 HOSTLD_O=${_ld_o-$HOSTLD_O}
4127
4128 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4129     probe_cc depcc "$dep_cc"
4130     CCDEP=${_DEPCMD:-$DEPCMD}
4131     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4132     DEPCCFLAGS=$_flags
4133 fi
4134
4135 if $ar 2>&1 | grep -q Microsoft; then
4136     arflags="-nologo"
4137     ar_o='-out:$@'
4138 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
4139     arflags="rq"
4140     ar_o='$@'
4141 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
4142     arflags='-Xany -r -c'
4143     ar_o='$@'
4144 elif $ar 2>&1 | grep -q "\[D\] "; then
4145     arflags="rcD"
4146     ar_o='$@'
4147 else
4148     arflags="rc"
4149     ar_o='$@'
4150 fi
4151
4152 add_cflags $extra_cflags
4153 add_cxxflags $extra_cxxflags
4154 add_objcflags $extra_objcflags
4155 add_asflags $extra_cflags
4156
4157 if test -n "$sysroot"; then
4158     case "$cc_type" in
4159         gcc|llvm_gcc|clang)
4160             add_cppflags --sysroot="$sysroot"
4161             add_ldflags --sysroot="$sysroot"
4162 # On Darwin --sysroot may be ignored, -isysroot always affects headers and linking
4163             add_cppflags -isysroot "$sysroot"
4164             add_ldflags -isysroot "$sysroot"
4165         ;;
4166         tms470)
4167             add_cppflags -I"$sysinclude"
4168             add_ldflags  --sysroot="$sysroot"
4169         ;;
4170     esac
4171 fi
4172
4173 if test "$cpu" = host; then
4174     enabled cross_compile &&
4175         die "--cpu=host makes no sense when cross-compiling."
4176
4177     case "$cc_type" in
4178         gcc|llvm_gcc)
4179             check_native(){
4180                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4181                 sed -n "/cc1.*$1=/{
4182                             s/.*$1=\\([^ ]*\\).*/\\1/
4183                             p
4184                             q
4185                         }" $TMPE
4186             }
4187             cpu=$(check_native -march || check_native -mcpu)
4188         ;;
4189         clang)
4190             check_native(){
4191                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4192                 sed -n "/cc1.*-target-cpu /{
4193                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4194                             p
4195                             q
4196                         }" $TMPE
4197             }
4198             cpu=$(check_native -march)
4199         ;;
4200     esac
4201
4202     test "${cpu:-host}" = host &&
4203         die "--cpu=host not supported with compiler $cc"
4204 fi
4205
4206 # Deal with common $arch aliases
4207 case "$arch" in
4208     aarch64|arm64)
4209         arch="aarch64"
4210     ;;
4211     arm*|iPad*|iPhone*)
4212         arch="arm"
4213     ;;
4214     mips*|IP*)
4215         case "$arch" in
4216         *el)
4217             add_cppflags -EL
4218             add_ldflags -EL
4219         ;;
4220         *eb)
4221             add_cppflags -EB
4222             add_ldflags -EB
4223         ;;
4224         esac
4225         arch="mips"
4226     ;;
4227     parisc*|hppa*)
4228         arch="parisc"
4229     ;;
4230     "Power Macintosh"|ppc*|powerpc*)
4231         arch="ppc"
4232     ;;
4233     s390|s390x)
4234         arch="s390"
4235     ;;
4236     sh4|sh)
4237         arch="sh4"
4238     ;;
4239     sun4*|sparc*)
4240         arch="sparc"
4241     ;;
4242     tilegx|tile-gx)
4243         arch="tilegx"
4244     ;;
4245     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4246         arch="x86"
4247     ;;
4248 esac
4249
4250 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4251 enable $arch
4252
4253 # Add processor-specific flags
4254 if enabled aarch64; then
4255
4256     case $cpu in
4257         armv*)
4258             cpuflags="-march=$cpu"
4259         ;;
4260         *)
4261             cpuflags="-mcpu=$cpu"
4262         ;;
4263     esac
4264
4265 elif enabled alpha; then
4266
4267     cpuflags="-mcpu=$cpu"
4268
4269 elif enabled arm; then
4270
4271     check_arm_arch() {
4272         check_cpp_condition stddef.h \
4273             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4274             $cpuflags
4275     }
4276
4277     probe_arm_arch() {
4278         if   check_arm_arch 4;        then echo armv4
4279         elif check_arm_arch 4T;       then echo armv4t
4280         elif check_arm_arch 5;        then echo armv5
4281         elif check_arm_arch 5E;       then echo armv5e
4282         elif check_arm_arch 5T;       then echo armv5t
4283         elif check_arm_arch 5TE;      then echo armv5te
4284         elif check_arm_arch 5TEJ;     then echo armv5te
4285         elif check_arm_arch 6;        then echo armv6
4286         elif check_arm_arch 6J;       then echo armv6j
4287         elif check_arm_arch 6K;       then echo armv6k
4288         elif check_arm_arch 6Z;       then echo armv6z
4289         elif check_arm_arch 6ZK;      then echo armv6zk
4290         elif check_arm_arch 6T2;      then echo armv6t2
4291         elif check_arm_arch 7;        then echo armv7
4292         elif check_arm_arch 7A  7_A;  then echo armv7-a
4293         elif check_arm_arch 7S;       then echo armv7-a
4294         elif check_arm_arch 7R  7_R;  then echo armv7-r
4295         elif check_arm_arch 7M  7_M;  then echo armv7-m
4296         elif check_arm_arch 7EM 7E_M; then echo armv7-m
4297         elif check_arm_arch 8A  8_A;  then echo armv8-a
4298         fi
4299     }
4300
4301     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4302
4303     case $cpu in
4304         armv*)
4305             cpuflags="-march=$cpu"
4306             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4307         ;;
4308         *)
4309             cpuflags="-mcpu=$cpu"
4310             case $cpu in
4311                 cortex-a*)                               subarch=armv7a  ;;
4312                 cortex-r*)                               subarch=armv7r  ;;
4313                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4314                 arm11*)                                  subarch=armv6   ;;
4315                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4316                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4317                 *)                             subarch=$(probe_arm_arch) ;;
4318             esac
4319         ;;
4320     esac
4321
4322     case "$subarch" in
4323         armv5t*)    enable fast_clz                ;;
4324         armv[6-8]*)
4325             enable fast_clz
4326             disabled fast_unaligned || enable fast_unaligned
4327             ;;
4328     esac
4329
4330 elif enabled avr32; then
4331
4332     case $cpu in
4333         ap7[02]0[0-2])
4334             subarch="avr32_ap"
4335             cpuflags="-mpart=$cpu"
4336         ;;
4337         ap)
4338             subarch="avr32_ap"
4339             cpuflags="-march=$cpu"
4340         ;;
4341         uc3[ab]*)
4342             subarch="avr32_uc"
4343             cpuflags="-mcpu=$cpu"
4344         ;;
4345         uc)
4346             subarch="avr32_uc"
4347             cpuflags="-march=$cpu"
4348         ;;
4349     esac
4350
4351 elif enabled bfin; then
4352
4353     cpuflags="-mcpu=$cpu"
4354
4355 elif enabled mips; then
4356
4357     cpuflags="-march=$cpu"
4358
4359     if [ "$cpu" != "generic" ]; then
4360         disable mips32r2
4361         disable mips32r5
4362         disable mips64r2
4363         disable mips32r6
4364         disable mips64r6
4365         disable loongson2
4366         disable loongson3
4367
4368         case $cpu in
4369             24kc|24kf*|24kec|34kc|1004kc|24kef*|34kf*|1004kf*|74kc|74kf)
4370                 enable mips32r2
4371                 disable msa
4372             ;;
4373             p5600|i6400|p6600)
4374                 disable mipsdsp
4375                 disable mipsdspr2
4376             ;;
4377             loongson*)
4378                 enable loongson2
4379                 enable loongson3
4380                 enable local_aligned_8 local_aligned_16 local_aligned_32
4381                 enable simd_align_16
4382                 enable fast_64bit
4383                 enable fast_clz
4384                 enable fast_cmov
4385                 enable fast_unaligned
4386                 disable aligned_stack
4387                 case $cpu in
4388                     loongson3*)
4389                         cpuflags="-march=loongson3a -mhard-float -fno-expensive-optimizations"
4390                     ;;
4391                     loongson2e)
4392                         cpuflags="-march=loongson2e -mhard-float -fno-expensive-optimizations"
4393                     ;;
4394                     loongson2f)
4395                         cpuflags="-march=loongson2f -mhard-float -fno-expensive-optimizations"
4396                     ;;
4397                 esac
4398             ;;
4399             *)
4400                 # Unknown CPU. Disable everything.
4401                 warn "unknown CPU. Disabling all MIPS optimizations."
4402                 disable mipsfpu
4403                 disable mipsdsp
4404                 disable mipsdspr2
4405                 disable msa
4406                 disable mmi
4407             ;;
4408         esac
4409
4410         case $cpu in
4411             24kc)
4412                 disable mipsfpu
4413                 disable mipsdsp
4414                 disable mipsdspr2
4415             ;;
4416             24kf*)
4417                 disable mipsdsp
4418                 disable mipsdspr2
4419             ;;
4420             24kec|34kc|1004kc)
4421                 disable mipsfpu
4422                 disable mipsdspr2
4423             ;;
4424             24kef*|34kf*|1004kf*)
4425                 disable mipsdspr2
4426             ;;
4427             74kc)
4428                 disable mipsfpu
4429             ;;
4430             p5600)
4431                 enable mips32r5
4432                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
4433             ;;
4434             i6400)
4435                 enable mips64r6
4436                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4437             ;;
4438             p6600)
4439                 enable mips64r6
4440                 check_cflags "-mtune=p6600 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4441             ;;
4442         esac
4443     else
4444         # We do not disable anything. Is up to the user to disable the unwanted features.
4445         warn 'generic cpu selected'
4446     fi
4447
4448 elif enabled ppc; then
4449
4450     disable ldbrx
4451
4452     case $(tolower $cpu) in
4453         601|ppc601|powerpc601)
4454             cpuflags="-mcpu=601"
4455             disable altivec
4456         ;;
4457         603*|ppc603*|powerpc603*)
4458             cpuflags="-mcpu=603"
4459             disable altivec
4460         ;;
4461         604*|ppc604*|powerpc604*)
4462             cpuflags="-mcpu=604"
4463             disable altivec
4464         ;;
4465         g3|75*|ppc75*|powerpc75*)
4466             cpuflags="-mcpu=750"
4467             disable altivec
4468         ;;
4469         g4|745*|ppc745*|powerpc745*)
4470             cpuflags="-mcpu=7450"
4471             disable vsx
4472         ;;
4473         74*|ppc74*|powerpc74*)
4474             cpuflags="-mcpu=7400"
4475             disable vsx
4476         ;;
4477         g5|970|ppc970|powerpc970)
4478             cpuflags="-mcpu=970"
4479             disable vsx
4480         ;;
4481         power[3-6]*)
4482             cpuflags="-mcpu=$cpu"
4483             disable vsx
4484         ;;
4485         power[7-8]*)
4486             cpuflags="-mcpu=$cpu"
4487         ;;
4488         cell)
4489             cpuflags="-mcpu=cell"
4490             enable ldbrx
4491             disable vsx
4492         ;;
4493         e500mc)
4494             cpuflags="-mcpu=e500mc"
4495             disable altivec
4496         ;;
4497         e500v2)
4498             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
4499             disable altivec
4500             disable dcbzl
4501         ;;
4502         e500)
4503             cpuflags="-mcpu=8540 -mhard-float"
4504             disable altivec
4505             disable dcbzl
4506         ;;
4507     esac
4508
4509 elif enabled sparc; then
4510
4511     case $cpu in
4512         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
4513             cpuflags="-mcpu=$cpu"
4514         ;;
4515         ultrasparc*|niagara[234])
4516             cpuflags="-mcpu=$cpu"
4517         ;;
4518     esac
4519
4520 elif enabled x86; then
4521
4522     case $cpu in
4523         i[345]86|pentium)
4524             cpuflags="-march=$cpu"
4525             disable i686
4526             disable mmx
4527         ;;
4528         # targets that do NOT support nopl and conditional mov (cmov)
4529         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
4530             cpuflags="-march=$cpu"
4531             disable i686
4532         ;;
4533         # targets that do support nopl and conditional mov (cmov)
4534         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
4535         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|skylake*|knl\
4536         |amdfam10|barcelona|b[dt]ver*|znver*)
4537             cpuflags="-march=$cpu"
4538             enable i686
4539             enable fast_cmov
4540         ;;
4541         # targets that do support conditional mov but on which it's slow
4542         pentium4|pentium4m|prescott|nocona)
4543             cpuflags="-march=$cpu"
4544             enable i686
4545             disable fast_cmov
4546         ;;
4547     esac
4548
4549 fi
4550
4551 if [ "$cpu" != generic ]; then
4552     add_cflags  $cpuflags
4553     add_asflags $cpuflags
4554     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
4555 fi
4556
4557 # compiler sanity check
4558 check_exec <<EOF
4559 int main(void){ return 0; }
4560 EOF
4561 if test "$?" != 0; then
4562     echo "$cc is unable to create an executable file."
4563     if test -z "$cross_prefix" && ! enabled cross_compile ; then
4564         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
4565         echo "Only do this if you know what cross compiling means."
4566     fi
4567     die "C compiler test failed."
4568 fi
4569
4570 add_cppflags -D_ISOC99_SOURCE
4571 add_cxxflags -D__STDC_CONSTANT_MACROS
4572 add_cxxflags -std=c++98
4573 check_cflags -std=c99
4574 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
4575 #include <stdlib.h>
4576 EOF
4577 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
4578 #include <stdlib.h>
4579 EOF
4580
4581 add_host_cppflags -D_ISOC99_SOURCE
4582 check_host_cflags -std=c99
4583 check_host_cflags -Wall
4584 check_host_cflags -O3
4585
4586 check_64bit(){
4587     arch32=$1
4588     arch64=$2
4589     expr=$3
4590     check_code cc "" "int test[2*($expr) - 1]" &&
4591         subarch=$arch64 || subarch=$arch32
4592 }
4593
4594 case "$arch" in
4595     aarch64|alpha|ia64)
4596         spic=$shared
4597     ;;
4598     mips)
4599         check_64bit mips mips64 '_MIPS_SIM > 1'
4600         spic=$shared
4601     ;;
4602     parisc)
4603         check_64bit parisc parisc64 'sizeof(void *) > 4'
4604         spic=$shared
4605     ;;
4606     ppc)
4607         check_64bit ppc ppc64 'sizeof(void *) > 4'
4608         spic=$shared
4609     ;;
4610     s390)
4611         check_64bit s390 s390x 'sizeof(void *) > 4'
4612         spic=$shared
4613     ;;
4614     sparc)
4615         check_64bit sparc sparc64 'sizeof(void *) > 4'
4616         spic=$shared
4617     ;;
4618     x86)
4619         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
4620         # Treat x32 as x64 for now. Note it also needs spic=$shared
4621         test "$subarch" = "x86_32" && check_cpp_condition stddef.h 'defined(__x86_64__)' &&
4622             subarch=x86_64
4623         if test "$subarch" = "x86_64"; then
4624             spic=$shared
4625         fi
4626     ;;
4627     ppc)
4628         check_cc <<EOF && subarch="ppc64"
4629         int test[(int)sizeof(char*) - 7];
4630 EOF
4631     ;;
4632 esac
4633
4634 enable $subarch
4635 enabled spic && enable_weak pic
4636
4637 # OS specific
4638 case $target_os in
4639     aix)
4640         SHFLAGS=-shared
4641         add_cppflags '-I\$(SRC_PATH)/compat/aix'
4642         enabled shared && add_ldflags -Wl,-brtl
4643         ;;
4644     android)
4645         disable symver
4646         enable section_data_rel_ro
4647         SLIB_INSTALL_NAME='$(SLIBNAME)'
4648         SLIB_INSTALL_LINKS=
4649         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
4650         ;;
4651     haiku)
4652         prefix_default="/boot/common"
4653         network_extralibs="-lnetwork"
4654         host_libs=
4655         ;;
4656     sunos)
4657         SHFLAGS='-shared -Wl,-h,$$(@F)'
4658         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
4659         network_extralibs="-lsocket -lnsl"
4660         add_cppflags -D__EXTENSIONS__
4661         # When using suncc to build, the Solaris linker will mark
4662         # an executable with each instruction set encountered by
4663         # the Solaris assembler.  As our libraries contain their own
4664         # guards for processor-specific code, instead suppress
4665         # generation of the HWCAPS ELF section on Solaris x86 only.
4666         enabled_all suncc x86 &&
4667             echo "hwcap_1 = OVERRIDE;" > mapfile &&
4668             add_ldflags -Wl,-M,mapfile
4669         nm_default='nm -P -g'
4670         version_script='-M'
4671         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
4672         ;;
4673     netbsd)
4674         disable symver
4675         oss_indev_extralibs="-lossaudio"
4676         oss_outdev_extralibs="-lossaudio"
4677         enabled gcc || check_ldflags -Wl,-zmuldefs
4678         ;;
4679     openbsd|bitrig)
4680         disable symver
4681         SHFLAGS='-shared'
4682         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
4683         SLIB_INSTALL_LINKS=
4684         oss_indev_extralibs="-lossaudio"
4685         oss_outdev_extralibs="-lossaudio"
4686         ;;
4687     dragonfly)
4688         disable symver
4689         ;;
4690     freebsd)
4691         ;;
4692     bsd/os)
4693         add_extralibs -lpoll -lgnugetopt
4694         strip="strip -d"
4695         ;;
4696     darwin)
4697         enabled ppc && add_asflags -force_cpusubtype_ALL
4698         install_name_dir_default='$(SHLIBDIR)'
4699         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(INSTALL_NAME_DIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
4700         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
4701         strip="${strip} -x"
4702         add_ldflags -Wl,-dynamic,-search_paths_first
4703         SLIBSUF=".dylib"
4704         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
4705         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
4706         objformat="macho"
4707         enabled x86_64 && objformat="macho64"
4708         enabled_any pic shared x86_64 ||
4709             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
4710         check_header dispatch/dispatch.h &&
4711             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
4712         ;;
4713     msys*)
4714         die "Native MSYS builds are discouraged, please use the MINGW environment."
4715         ;;
4716     mingw32*|mingw64*)
4717         if test $target_os = "mingw32ce"; then
4718             disable network
4719         else
4720             target_os=mingw32
4721         fi
4722         decklink_outdev_extralibs="$decklink_outdev_extralibs -lole32 -loleaut32"
4723         decklink_indev_extralibs="$decklink_indev_extralibs -lole32 -loleaut32"
4724         LIBTARGET=i386
4725         if enabled x86_64; then
4726             LIBTARGET="i386:x86-64"
4727         elif enabled arm; then
4728             LIBTARGET=arm-wince
4729         fi
4730         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4731         enabled x86_32 && check_ldflags -Wl,--large-address-aware
4732         shlibdir_default="$bindir_default"
4733         SLIBPREF=""
4734         SLIBSUF=".dll"
4735         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4736         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4737         dlltool="${cross_prefix}dlltool"
4738         if check_cmd lib.exe -list; then
4739             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe /machine:$(LIBTARGET) /def:$$(@:$(SLIBSUF)=.def) /out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4740             if enabled x86_64; then
4741                 LIBTARGET=x64
4742             fi
4743         elif check_cmd $dlltool --version; then
4744             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
4745         fi
4746         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4747         SLIB_INSTALL_LINKS=
4748         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4749         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4750         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--disable-auto-image-base'
4751         objformat="win32"
4752         ranlib=:
4753         enable dos_paths
4754         check_ldflags -Wl,--nxcompat,--dynamicbase
4755         # Lets work around some stupidity in binutils.
4756         # ld will strip relocations from executables even though we need them
4757         # for dynamicbase (ASLR).  Using -pie does retain the reloc section
4758         # however ld then forgets what the entry point should be (oops) so we
4759         # have to manually (re)set it.
4760         if enabled x86_32; then
4761             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,_mainCRTStartup
4762         elif enabled x86_64; then
4763             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,mainCRTStartup
4764             check_ldflags -Wl,--high-entropy-va # binutils 2.25
4765             # Set image base >4GB for extra entropy with HEASLR
4766             add_ldexeflags -Wl,--image-base,0x140000000
4767             append SHFLAGS -Wl,--image-base,0x180000000
4768         fi
4769         ;;
4770     win32|win64)
4771         disable symver
4772         if enabled shared; then
4773             # Link to the import library instead of the normal static library
4774             # for shared libs.
4775             LD_LIB='%.lib'
4776             # Cannot build both shared and static libs with MSVC or icl.
4777             disable static
4778         fi
4779         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
4780         shlibdir_default="$bindir_default"
4781         SLIBPREF=""
4782         SLIBSUF=".dll"
4783         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4784         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4785         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
4786         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4787         SLIB_INSTALL_LINKS=
4788         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4789         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4790         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4791         objformat="win32"
4792         ranlib=:
4793         enable dos_paths
4794         ;;
4795     cygwin*)
4796         target_os=cygwin
4797         shlibdir_default="$bindir_default"
4798         SLIBPREF="cyg"
4799         SLIBSUF=".dll"
4800         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4801         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4802         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4803         SLIB_INSTALL_LINKS=
4804         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
4805         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
4806         objformat="win32"
4807         enable dos_paths
4808         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4809         ;;
4810     *-dos|freedos|opendos)
4811         network_extralibs="-lsocket"
4812         objformat="coff"
4813         enable dos_paths
4814         add_cppflags -U__STRICT_ANSI__
4815         ;;
4816     linux)
4817         enable dv1394
4818         enable section_data_rel_ro
4819         ;;
4820     irix*)
4821         target_os=irix
4822         ranlib="echo ignoring ranlib"
4823         ;;
4824     os/2*)
4825         strip="lxlite -CS"
4826         objformat="aout"
4827         add_cppflags -D_GNU_SOURCE
4828         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
4829         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
4830         LIBSUF="_s.a"
4831         SLIBPREF=""
4832         SLIBSUF=".dll"
4833         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4834         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(FULLNAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
4835         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(FULLNAME).def; \
4836             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(FULLNAME).def; \
4837             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(FULLNAME).def; \
4838             echo EXPORTS >> $(SUBDIR)$(FULLNAME).def; \
4839             emxexp $(OBJS) >> $(SUBDIR)$(FULLNAME).def'
4840         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.a $(SUBDIR)$(FULLNAME).def; \
4841             emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.lib $(SUBDIR)$(FULLNAME).def;'
4842         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4843         SLIB_INSTALL_LINKS=
4844         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(FULLNAME)_dll.a $(LIBPREF)$(FULLNAME)_dll.lib'
4845         enable dos_paths
4846         enable_weak os2threads
4847         ;;
4848     gnu/kfreebsd)
4849         add_cppflags -D_BSD_SOURCE
4850         ;;
4851     gnu)
4852         ;;
4853     qnx)
4854         add_cppflags -D_QNX_SOURCE
4855         network_extralibs="-lsocket"
4856         ;;
4857     symbian)
4858         SLIBSUF=".dll"
4859         enable dos_paths
4860         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
4861         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
4862         add_ldflags -Wl,--target1-abs,--no-undefined \
4863                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
4864                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
4865         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
4866                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
4867                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
4868         ;;
4869     osf1)
4870         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
4871         ;;
4872     minix)
4873         ;;
4874     plan9)
4875         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
4876                      -D_REENTRANT_SOURCE        \
4877                      -D_RESEARCH_SOURCE         \
4878                      -DFD_SETSIZE=96            \
4879                      -DHAVE_SOCK_OPTS
4880         add_compat strtod.o strtod=avpriv_strtod
4881