build: sort EXAMPLE_LIST
[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     metadata_example
1460     muxing_example
1461     qsvdec_example
1462     remuxing_example
1463     resampling_audio_example
1464     scaling_video_example
1465     transcode_aac_example
1466     transcoding_example
1467 "
1468
1469 EXTERNAL_LIBRARY_LIST="
1470     avisynth
1471     bzlib
1472     chromaprint
1473     crystalhd
1474     decklink
1475     frei0r
1476     gcrypt
1477     gmp
1478     gnutls
1479     iconv
1480     jni
1481     ladspa
1482     libass
1483     libbluray
1484     libbs2b
1485     libcaca
1486     libcdio
1487     libcelt
1488     libdc1394
1489     libebur128
1490     libfaac
1491     libfdk_aac
1492     libflite
1493     libfontconfig
1494     libfreetype
1495     libfribidi
1496     libgme
1497     libgsm
1498     libiec61883
1499     libilbc
1500     libkvazaar
1501     libmodplug
1502     libmp3lame
1503     libnut
1504     libopencore_amrnb
1505     libopencore_amrwb
1506     libopencv
1507     libopenh264
1508     libopenjpeg
1509     libopenmpt
1510     libopus
1511     libpulse
1512     librtmp
1513     librubberband
1514     libschroedinger
1515     libshine
1516     libsmbclient
1517     libsnappy
1518     libsoxr
1519     libspeex
1520     libssh
1521     libtesseract
1522     libtheora
1523     libtwolame
1524     libv4l2
1525     libvidstab
1526     libvo_amrwbenc
1527     libvorbis
1528     libvpx
1529     libwavpack
1530     libwebp
1531     libx264
1532     libx265
1533     libxavs
1534     libxcb
1535     libxcb_shm
1536     libxcb_shape
1537     libxcb_xfixes
1538     libxvid
1539     libzimg
1540     libzmq
1541     libzvbi
1542     lzma
1543     mediacodec
1544     netcdf
1545     openal
1546     opencl
1547     opengl
1548     openssl
1549     schannel
1550     sdl
1551     sdl2
1552     securetransport
1553     videotoolbox
1554     x11grab
1555     xlib
1556     zlib
1557 "
1558
1559 HWACCEL_LIBRARY_LIST="
1560     audiotoolbox
1561     cuda
1562     cuvid
1563     d3d11va
1564     dxva2
1565     libmfx
1566     libnpp
1567     mmal
1568     nvenc
1569     omx
1570     vaapi
1571     vda
1572     vdpau
1573     videotoolbox_hwaccel
1574     xvmc
1575 "
1576
1577 DOCUMENT_LIST="
1578     doc
1579     htmlpages
1580     manpages
1581     podpages
1582     txtpages
1583 "
1584
1585 FEATURE_LIST="
1586     ftrapv
1587     gray
1588     hardcoded_tables
1589     omx_rpi
1590     runtime_cpudetect
1591     safe_bitstream_reader
1592     shared
1593     small
1594     static
1595     swscale_alpha
1596 "
1597
1598 LIBRARY_LIST="
1599     avcodec
1600     avdevice
1601     avfilter
1602     avformat
1603     avresample
1604     avutil
1605     postproc
1606     swresample
1607     swscale
1608 "
1609
1610 LICENSE_LIST="
1611     gpl
1612     nonfree
1613     version3
1614 "
1615
1616 PROGRAM_LIST="
1617     ffplay
1618     ffprobe
1619     ffserver
1620     ffmpeg
1621 "
1622
1623 SUBSYSTEM_LIST="
1624     dct
1625     dwt
1626     error_resilience
1627     faan
1628     fast_unaligned
1629     fft
1630     lsp
1631     lzo
1632     mdct
1633     pixelutils
1634     network
1635     rdft
1636 "
1637
1638 CONFIG_LIST="
1639     $COMPONENT_LIST
1640     $DOCUMENT_LIST
1641     $EXAMPLE_LIST
1642     $EXTERNAL_LIBRARY_LIST
1643     $HWACCEL_LIBRARY_LIST
1644     $FEATURE_LIST
1645     $LICENSE_LIST
1646     $LIBRARY_LIST
1647     $PROGRAM_LIST
1648     $SUBSYSTEM_LIST
1649     fontconfig
1650     incompatible_libav_abi
1651     memalign_hack
1652     memory_poisoning
1653     neon_clobber_test
1654     pic
1655     pod2man
1656     raise_major
1657     thumb
1658     valgrind_backtrace
1659     xmm_clobber_test
1660 "
1661
1662 THREADS_LIST="
1663     pthreads
1664     os2threads
1665     w32threads
1666 "
1667
1668 ATOMICS_LIST="
1669     atomics_gcc
1670     atomics_suncc
1671     atomics_win32
1672 "
1673
1674 ARCH_LIST="
1675     aarch64
1676     alpha
1677     arm
1678     avr32
1679     avr32_ap
1680     avr32_uc
1681     bfin
1682     ia64
1683     m68k
1684     mips
1685     mips64
1686     parisc
1687     ppc
1688     ppc64
1689     s390
1690     sh4
1691     sparc
1692     sparc64
1693     tilegx
1694     tilepro
1695     tomi
1696     x86
1697     x86_32
1698     x86_64
1699 "
1700
1701 ARCH_EXT_LIST_ARM="
1702     armv5te
1703     armv6
1704     armv6t2
1705     armv8
1706     neon
1707     vfp
1708     vfpv3
1709     setend
1710 "
1711
1712 ARCH_EXT_LIST_MIPS="
1713     mipsfpu
1714     mips32r2
1715     mips32r5
1716     mips64r2
1717     mips32r6
1718     mips64r6
1719     mipsdsp
1720     mipsdspr2
1721     msa
1722 "
1723
1724 ARCH_EXT_LIST_LOONGSON="
1725     loongson2
1726     loongson3
1727     mmi
1728 "
1729
1730 ARCH_EXT_LIST_X86_SIMD="
1731     aesni
1732     amd3dnow
1733     amd3dnowext
1734     avx
1735     avx2
1736     fma3
1737     fma4
1738     mmx
1739     mmxext
1740     sse
1741     sse2
1742     sse3
1743     sse4
1744     sse42
1745     ssse3
1746     xop
1747 "
1748
1749 ARCH_EXT_LIST_PPC="
1750     altivec
1751     dcbzl
1752     ldbrx
1753     power8
1754     ppc4xx
1755     vsx
1756 "
1757
1758 ARCH_EXT_LIST_X86="
1759     $ARCH_EXT_LIST_X86_SIMD
1760     cpunop
1761     i686
1762 "
1763
1764 ARCH_EXT_LIST="
1765     $ARCH_EXT_LIST_ARM
1766     $ARCH_EXT_LIST_PPC
1767     $ARCH_EXT_LIST_X86
1768     $ARCH_EXT_LIST_MIPS
1769     $ARCH_EXT_LIST_LOONGSON
1770 "
1771
1772 ARCH_FEATURES="
1773     aligned_stack
1774     fast_64bit
1775     fast_clz
1776     fast_cmov
1777     local_aligned_8
1778     local_aligned_16
1779     local_aligned_32
1780     simd_align_16
1781 "
1782
1783 BUILTIN_LIST="
1784     atomic_cas_ptr
1785     atomic_compare_exchange
1786     machine_rw_barrier
1787     MemoryBarrier
1788     mm_empty
1789     rdtsc
1790     sarestart
1791     sem_timedwait
1792     sync_val_compare_and_swap
1793 "
1794 HAVE_LIST_CMDLINE="
1795     inline_asm
1796     symver
1797     yasm
1798 "
1799
1800 HAVE_LIST_PUB="
1801     bigendian
1802     fast_unaligned
1803     incompatible_libav_abi
1804 "
1805
1806 HEADERS_LIST="
1807     alsa_asoundlib_h
1808     altivec_h
1809     arpa_inet_h
1810     asm_types_h
1811     cdio_paranoia_h
1812     cdio_paranoia_paranoia_h
1813     dispatch_dispatch_h
1814     dev_bktr_ioctl_bt848_h
1815     dev_bktr_ioctl_meteor_h
1816     dev_ic_bt8xx_h
1817     dev_video_bktr_ioctl_bt848_h
1818     dev_video_meteor_ioctl_meteor_h
1819     direct_h
1820     dirent_h
1821     dlfcn_h
1822     d3d11_h
1823     dxva_h
1824     ES2_gl_h
1825     gsm_h
1826     io_h
1827     mach_mach_time_h
1828     machine_ioctl_bt848_h
1829     machine_ioctl_meteor_h
1830     malloc_h
1831     opencv2_core_core_c_h
1832     openjpeg_2_1_openjpeg_h
1833     openjpeg_2_0_openjpeg_h
1834     openjpeg_1_5_openjpeg_h
1835     OpenGL_gl3_h
1836     poll_h
1837     sndio_h
1838     soundcard_h
1839     sys_mman_h
1840     sys_param_h
1841     sys_resource_h
1842     sys_select_h
1843     sys_soundcard_h
1844     sys_time_h
1845     sys_un_h
1846     sys_videoio_h
1847     termios_h
1848     udplite_h
1849     unistd_h
1850     valgrind_valgrind_h
1851     windows_h
1852     winsock2_h
1853 "
1854
1855 INTRINSICS_LIST="
1856     intrinsics_neon
1857 "
1858
1859 COMPLEX_FUNCS="
1860     cabs
1861     cexp
1862 "
1863
1864 MATH_FUNCS="
1865     atanf
1866     atan2f
1867     cbrt
1868     cbrtf
1869     copysign
1870     cosf
1871     erf
1872     exp2
1873     exp2f
1874     expf
1875     hypot
1876     isfinite
1877     isinf
1878     isnan
1879     ldexpf
1880     llrint
1881     llrintf
1882     log2
1883     log2f
1884     log10f
1885     lrint
1886     lrintf
1887     powf
1888     rint
1889     round
1890     roundf
1891     sinf
1892     trunc
1893     truncf
1894 "
1895
1896 SYSTEM_FUNCS="
1897     access
1898     aligned_malloc
1899     arc4random
1900     clock_gettime
1901     closesocket
1902     CommandLineToArgvW
1903     CoTaskMemFree
1904     CryptGenRandom
1905     dlopen
1906     fcntl
1907     flt_lim
1908     fork
1909     getaddrinfo
1910     gethrtime
1911     getopt
1912     GetProcessAffinityMask
1913     GetProcessMemoryInfo
1914     GetProcessTimes
1915     getrusage
1916     GetSystemTimeAsFileTime
1917     gettimeofday
1918     glob
1919     glXGetProcAddress
1920     gmtime_r
1921     inet_aton
1922     isatty
1923     jack_port_get_latency_range
1924     kbhit
1925     LoadLibrary
1926     localtime_r
1927     lstat
1928     lzo1x_999_compress
1929     mach_absolute_time
1930     MapViewOfFile
1931     memalign
1932     mkstemp
1933     mmap
1934     mprotect
1935     nanosleep
1936     PeekNamedPipe
1937     posix_memalign
1938     pthread_cancel
1939     sched_getaffinity
1940     SetConsoleTextAttribute
1941     SetConsoleCtrlHandler
1942     setmode
1943     setrlimit
1944     Sleep
1945     strerror_r
1946     sysconf
1947     sysctl
1948     usleep
1949     UTGetOSTypeFromString
1950     VirtualAlloc
1951     wglGetProcAddress
1952 "
1953
1954 TOOLCHAIN_FEATURES="
1955     as_dn_directive
1956     as_func
1957     as_object_arch
1958     asm_mod_q
1959     attribute_may_alias
1960     attribute_packed
1961     ebp_available
1962     ebx_available
1963     gnu_as
1964     gnu_windres
1965     ibm_asm
1966     inline_asm_direct_symbol_refs
1967     inline_asm_labels
1968     inline_asm_nonlocal_labels
1969     pragma_deprecated
1970     rsync_contimeout
1971     symver_asm_label
1972     symver_gnu_asm
1973     vfp_args
1974     xform_asm
1975     xmm_clobbers
1976 "
1977
1978 TYPES_LIST="
1979     CONDITION_VARIABLE_Ptr
1980     socklen_t
1981     struct_addrinfo
1982     struct_group_source_req
1983     struct_ip_mreq_source
1984     struct_ipv6_mreq
1985     struct_msghdr_msg_flags
1986     struct_pollfd
1987     struct_rusage_ru_maxrss
1988     struct_sctp_event_subscribe
1989     struct_sockaddr_in6
1990     struct_sockaddr_sa_len
1991     struct_sockaddr_storage
1992     struct_stat_st_mtim_tv_nsec
1993     struct_v4l2_frmivalenum_discrete
1994 "
1995
1996 HAVE_LIST="
1997     $ARCH_EXT_LIST
1998     $(add_suffix _external $ARCH_EXT_LIST)
1999     $(add_suffix _inline   $ARCH_EXT_LIST)
2000     $ARCH_FEATURES
2001     $ATOMICS_LIST
2002     $BUILTIN_LIST
2003     $COMPLEX_FUNCS
2004     $HAVE_LIST_CMDLINE
2005     $HAVE_LIST_PUB
2006     $HEADERS_LIST
2007     $INTRINSICS_LIST
2008     $MATH_FUNCS
2009     $SYSTEM_FUNCS
2010     $THREADS_LIST
2011     $TOOLCHAIN_FEATURES
2012     $TYPES_LIST
2013     atomics_native
2014     dos_paths
2015     dxva2_lib
2016     dxva2api_cobj
2017     libc_msvcrt
2018     libdc1394_1
2019     libdc1394_2
2020     makeinfo
2021     makeinfo_html
2022     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
2023     perl
2024     pod2man
2025     sdl2
2026     section_data_rel_ro
2027     texi2html
2028     threads
2029     vaapi_drm
2030     vaapi_x11
2031     vdpau_x11
2032     winrt
2033     xlib
2034 "
2035
2036 # options emitted with CONFIG_ prefix but not available on the command line
2037 CONFIG_EXTRA="
2038     aandcttables
2039     ac3dsp
2040     audio_frame_queue
2041     audiodsp
2042     blockdsp
2043     bswapdsp
2044     cabac
2045     dirac_parse
2046     dvprofile
2047     exif
2048     faandct
2049     faanidct
2050     fdctdsp
2051     flacdsp
2052     fmtconvert
2053     frame_thread_encoder
2054     g722dsp
2055     golomb
2056     gplv3
2057     h263dsp
2058     h264chroma
2059     h264dsp
2060     h264pred
2061     h264qpel
2062     hpeldsp
2063     huffman
2064     huffyuvdsp
2065     huffyuvencdsp
2066     idctdsp
2067     iirfilter
2068     imdct15
2069     intrax8
2070     iso_media
2071     ividsp
2072     jpegtables
2073     lgplv3
2074     libx262
2075     llauddsp
2076     llviddsp
2077     lpc
2078     lzf
2079     me_cmp
2080     mpeg_er
2081     mpegaudio
2082     mpegaudiodsp
2083     mpegvideo
2084     mpegvideoenc
2085     mss34dsp
2086     pixblockdsp
2087     qpeldsp
2088     qsv
2089     qsvdec
2090     qsvenc
2091     rangecoder
2092     riffdec
2093     riffenc
2094     rtpdec
2095     rtpenc_chain
2096     rv34dsp
2097     sinewin
2098     snappy
2099     srtp
2100     startcode
2101     texturedsp
2102     texturedspenc
2103     tpeldsp
2104     vaapi_encode
2105     vc1dsp
2106     videodsp
2107     vp3dsp
2108     vp56dsp
2109     vp8dsp
2110     vt_bt2020
2111     wma_freqs
2112     wmv2dsp
2113 "
2114
2115 CMDLINE_SELECT="
2116     $ARCH_EXT_LIST
2117     $CONFIG_LIST
2118     $HAVE_LIST_CMDLINE
2119     $THREADS_LIST
2120     asm
2121     cross_compile
2122     debug
2123     extra_warnings
2124     logging
2125     lto
2126     optimizations
2127     rpath
2128     stripping
2129 "
2130
2131 PATHS_LIST="
2132     bindir
2133     datadir
2134     docdir
2135     incdir
2136     libdir
2137     mandir
2138     pkgconfigdir
2139     prefix
2140     shlibdir
2141     install_name_dir
2142 "
2143
2144 CMDLINE_SET="
2145     $PATHS_LIST
2146     ar
2147     arch
2148     as
2149     assert_level
2150     build_suffix
2151     cc
2152     objcc
2153     cpu
2154     cross_prefix
2155     custom_allocator
2156     cxx
2157     dep_cc
2158     doxygen
2159     env
2160     extra_version
2161     gas
2162     host_cc
2163     host_cflags
2164     host_ld
2165     host_ldflags
2166     host_libs
2167     host_os
2168     install
2169     ld
2170     ln_s
2171     logfile
2172     malloc_prefix
2173     nm
2174     optflags
2175     pkg_config
2176     pkg_config_flags
2177     progs_suffix
2178     random_seed
2179     ranlib
2180     samples
2181     strip
2182     sws_max_filter_size
2183     sysinclude
2184     sysroot
2185     target_exec
2186     target_os
2187     target_path
2188     target_samples
2189     tempprefix
2190     toolchain
2191     valgrind
2192     yasmexe
2193 "
2194
2195 CMDLINE_APPEND="
2196     extra_cflags
2197     extra_cxxflags
2198     extra_objcflags
2199     host_cppflags
2200 "
2201
2202 # code dependency declarations
2203
2204 # architecture extensions
2205
2206 armv5te_deps="arm"
2207 armv6_deps="arm"
2208 armv6t2_deps="arm"
2209 armv8_deps="aarch64"
2210 neon_deps_any="aarch64 arm"
2211 intrinsics_neon_deps="neon"
2212 vfp_deps_any="aarch64 arm"
2213 vfpv3_deps="vfp"
2214 setend_deps="arm"
2215
2216 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2217
2218 loongson2_deps="mips"
2219 loongson3_deps="mips"
2220 mipsfpu_deps="mips"
2221 mipsdsp_deps="mips"
2222 mipsdspr2_deps="mips"
2223 mips32r2_deps="mips"
2224 mips32r5_deps="mips"
2225 mips32r6_deps="mips"
2226 mips64r2_deps="mips"
2227 mips64r6_deps="mips"
2228 msa_deps="mipsfpu"
2229 mmi_deps="mips"
2230
2231 altivec_deps="ppc"
2232 dcbzl_deps="ppc"
2233 ldbrx_deps="ppc"
2234 ppc4xx_deps="ppc"
2235 vsx_deps="altivec"
2236 power8_deps="vsx"
2237
2238 cpunop_deps="i686"
2239 x86_64_select="i686"
2240 x86_64_suggest="fast_cmov"
2241
2242 amd3dnow_deps="mmx"
2243 amd3dnowext_deps="amd3dnow"
2244 i686_deps="x86"
2245 mmx_deps="x86"
2246 mmxext_deps="mmx"
2247 sse_deps="mmxext"
2248 sse2_deps="sse"
2249 sse3_deps="sse2"
2250 ssse3_deps="sse3"
2251 sse4_deps="ssse3"
2252 sse42_deps="sse4"
2253 aesni_deps="sse42"
2254 avx_deps="sse42"
2255 xop_deps="avx"
2256 fma3_deps="avx"
2257 fma4_deps="avx"
2258 avx2_deps="avx"
2259
2260 mmx_external_deps="yasm"
2261 mmx_inline_deps="inline_asm"
2262 mmx_suggest="mmx_external mmx_inline"
2263
2264 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2265     eval dep=\$${ext}_deps
2266     eval ${ext}_external_deps='"${dep}_external"'
2267     eval ${ext}_inline_deps='"${dep}_inline"'
2268     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2269 done
2270
2271 aligned_stack_if_any="aarch64 ppc x86"
2272 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2273 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2274 fast_unaligned_if_any="aarch64 ppc x86"
2275 simd_align_16_if_any="altivec neon sse"
2276
2277 # system capabilities
2278 symver_if_any="symver_asm_label symver_gnu_asm"
2279 valgrind_backtrace_deps="!optimizations valgrind_valgrind_h"
2280
2281 # threading support
2282 atomics_gcc_if_any="sync_val_compare_and_swap atomic_compare_exchange"
2283 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2284 atomics_win32_if="MemoryBarrier"
2285 atomics_native_if_any="$ATOMICS_LIST"
2286 w32threads_deps="atomics_native"
2287 threads_if_any="$THREADS_LIST"
2288
2289 # subsystems
2290 dct_select="rdft"
2291 dirac_parse_select="golomb"
2292 error_resilience_select="me_cmp"
2293 faandct_deps="faan fdctdsp"
2294 faanidct_deps="faan idctdsp"
2295 h264dsp_select="startcode"
2296 frame_thread_encoder_deps="encoders threads"
2297 intrax8_select="blockdsp idctdsp"
2298 mdct_select="fft"
2299 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2300 mpeg_er_select="error_resilience"
2301 mpegaudio_select="mpegaudiodsp"
2302 mpegaudiodsp_select="dct"
2303 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2304 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
2305 vc1dsp_select="h264chroma qpeldsp startcode"
2306 rdft_select="fft"
2307
2308 # decoders / encoders
2309 aac_decoder_select="imdct15 mdct sinewin"
2310 aac_fixed_decoder_select="mdct sinewin"
2311 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2312 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2313 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2314 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2315 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2316 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2317 adpcm_g722_decoder_select="g722dsp"
2318 adpcm_g722_encoder_select="g722dsp"
2319 aic_decoder_select="golomb idctdsp"
2320 alac_encoder_select="lpc"
2321 als_decoder_select="bswapdsp"
2322 amrnb_decoder_select="lsp"
2323 amrwb_decoder_select="lsp"
2324 amv_decoder_select="sp5x_decoder exif"
2325 amv_encoder_select="aandcttables jpegtables mpegvideoenc"
2326 ape_decoder_select="bswapdsp llauddsp"
2327 apng_decoder_select="zlib"
2328 apng_encoder_select="huffyuvencdsp zlib"
2329 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2330 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2331 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2332 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2333 atrac1_decoder_select="mdct sinewin"
2334 atrac3_decoder_select="mdct"
2335 atrac3p_decoder_select="mdct sinewin"
2336 avrn_decoder_select="exif jpegtables"
2337 bink_decoder_select="blockdsp hpeldsp"
2338 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2339 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2340 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2341 cllc_decoder_select="bswapdsp"
2342 comfortnoise_encoder_select="lpc"
2343 cook_decoder_select="audiodsp mdct sinewin"
2344 cscd_decoder_select="lzo"
2345 cscd_decoder_suggest="zlib"
2346 dca_decoder_select="mdct"
2347 dds_decoder_select="texturedsp"
2348 dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
2349 dnxhd_decoder_select="blockdsp idctdsp"
2350 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2351 dvvideo_decoder_select="dvprofile idctdsp"
2352 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2353 dxa_decoder_select="zlib"
2354 dxv_decoder_select="lzf texturedsp"
2355 eac3_decoder_select="ac3_decoder"
2356 eac3_encoder_select="ac3_encoder"
2357 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2358 eatgq_decoder_select="aandcttables"
2359 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2360 exr_decoder_select="zlib"
2361 ffv1_decoder_select="golomb rangecoder"
2362 ffv1_encoder_select="rangecoder"
2363 ffvhuff_decoder_select="huffyuv_decoder"
2364 ffvhuff_encoder_select="huffyuv_encoder"
2365 fic_decoder_select="golomb"
2366 flac_decoder_select="flacdsp golomb"
2367 flac_encoder_select="bswapdsp flacdsp golomb lpc"
2368 flashsv2_decoder_select="zlib"
2369 flashsv2_encoder_select="zlib"
2370 flashsv_decoder_select="zlib"
2371 flashsv_encoder_select="zlib"
2372 flv_decoder_select="h263_decoder"
2373 flv_encoder_select="h263_encoder"
2374 fourxm_decoder_select="blockdsp bswapdsp"
2375 fraps_decoder_select="bswapdsp huffman"
2376 g2m_decoder_select="blockdsp idctdsp jpegtables zlib"
2377 g729_decoder_select="audiodsp"
2378 h261_decoder_select="mpegvideo"
2379 h261_encoder_select="aandcttables mpegvideoenc"
2380 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2381 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2382 h263i_decoder_select="h263_decoder"
2383 h263p_decoder_select="h263_decoder"
2384 h263p_encoder_select="h263_encoder"
2385 h264_decoder_select="cabac golomb h264chroma h264dsp h264pred h264qpel videodsp"
2386 h264_decoder_suggest="error_resilience"
2387 hap_decoder_select="snappy texturedsp"
2388 hap_encoder_deps="libsnappy"
2389 hap_encoder_select="texturedspenc"
2390 hevc_decoder_select="bswapdsp cabac golomb videodsp"
2391 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2392 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llviddsp"
2393 iac_decoder_select="imc_decoder"
2394 imc_decoder_select="bswapdsp fft mdct sinewin"
2395 indeo3_decoder_select="hpeldsp"
2396 indeo4_decoder_select="ividsp"
2397 indeo5_decoder_select="ividsp"
2398 interplay_video_decoder_select="hpeldsp"
2399 jpegls_decoder_select="golomb mjpeg_decoder"
2400 jpegls_encoder_select="golomb"
2401 jv_decoder_select="blockdsp"
2402 lagarith_decoder_select="huffyuvdsp"
2403 ljpeg_encoder_select="aandcttables idctdsp jpegtables"
2404 loco_decoder_select="golomb"
2405 magicyuv_decoder_select="huffyuvdsp"
2406 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2407 metasound_decoder_select="lsp mdct sinewin"
2408 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2409 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2410 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2411 mjpegb_decoder_select="mjpeg_decoder"
2412 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2413 mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
2414 mlp_decoder_select="mlp_parser"
2415 motionpixels_decoder_select="bswapdsp"
2416 mp1_decoder_select="mpegaudio"
2417 mp1float_decoder_select="mpegaudio"
2418 mp2_decoder_select="mpegaudio"
2419 mp2float_decoder_select="mpegaudio"
2420 mp3_decoder_select="mpegaudio"
2421 mp3adu_decoder_select="mpegaudio"
2422 mp3adufloat_decoder_select="mpegaudio"
2423 mp3float_decoder_select="mpegaudio"
2424 mp3on4_decoder_select="mpegaudio"
2425 mp3on4float_decoder_select="mpegaudio"
2426 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2427 mpc8_decoder_select="mpegaudiodsp"
2428 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
2429 mpeg_xvmc_decoder_select="mpeg2video_decoder"
2430 mpegvideo_decoder_select="mpegvideo"
2431 mpeg1video_decoder_select="mpegvideo"
2432 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2433 mpeg2video_decoder_select="mpegvideo"
2434 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2435 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2436 mpeg4_encoder_select="h263_encoder"
2437 msa1_decoder_select="mss34dsp"
2438 msmpeg4v1_decoder_select="h263_decoder"
2439 msmpeg4v2_decoder_select="h263_decoder"
2440 msmpeg4v2_encoder_select="h263_encoder"
2441 msmpeg4v3_decoder_select="h263_decoder"
2442 msmpeg4v3_encoder_select="h263_encoder"
2443 mss2_decoder_select="vc1_decoder mpegvideo"
2444 mts2_decoder_select="mss34dsp"
2445 mxpeg_decoder_select="mjpeg_decoder"
2446 nellymoser_decoder_select="mdct sinewin"
2447 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2448 nuv_decoder_select="idctdsp lzo"
2449 on2avc_decoder_select="mdct"
2450 opus_decoder_deps="swresample"
2451 opus_decoder_select="imdct15"
2452 png_decoder_select="zlib"
2453 png_encoder_select="huffyuvencdsp zlib"
2454 prores_decoder_select="blockdsp idctdsp"
2455 prores_encoder_select="fdctdsp"
2456 qcelp_decoder_select="lsp"
2457 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2458 ra_144_decoder_select="audiodsp"
2459 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2460 ralf_decoder_select="golomb"
2461 rawvideo_decoder_select="bswapdsp"
2462 rscc_decoder_select="zlib"
2463 rtjpeg_decoder_select="me_cmp"
2464 rv10_decoder_select="h263_decoder"
2465 rv10_encoder_select="h263_encoder"
2466 rv20_decoder_select="h263_decoder"
2467 rv20_encoder_select="h263_encoder"
2468 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2469 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2470 screenpresso_decoder_select="zlib"
2471 shorten_decoder_select="golomb"
2472 sipr_decoder_select="lsp"
2473 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2474 snow_encoder_select="aandcttables dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2475 sonic_decoder_select="golomb rangecoder"
2476 sonic_encoder_select="golomb rangecoder"
2477 sonic_ls_encoder_select="golomb rangecoder"
2478 sp5x_decoder_select="mjpeg_decoder"
2479 svq1_decoder_select="hpeldsp"
2480 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2481 svq3_decoder_select="golomb h264dsp h264pred hpeldsp tpeldsp videodsp"
2482 svq3_decoder_suggest="zlib"
2483 tak_decoder_select="audiodsp"
2484 tdsc_decoder_select="zlib mjpeg_decoder"
2485 theora_decoder_select="vp3_decoder"
2486 thp_decoder_select="mjpeg_decoder"
2487 tiff_decoder_suggest="zlib lzma"
2488 tiff_encoder_suggest="zlib"
2489 truehd_decoder_select="mlp_parser"
2490 truemotion2_decoder_select="bswapdsp"
2491 truespeech_decoder_select="bswapdsp"
2492 tscc_decoder_select="zlib"
2493 twinvq_decoder_select="mdct lsp sinewin"
2494 txd_decoder_select="texturedsp"
2495 utvideo_decoder_select="bswapdsp"
2496 utvideo_encoder_select="bswapdsp huffman huffyuvencdsp"
2497 vble_decoder_select="huffyuvdsp"
2498 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 mpegvideo vc1dsp"
2499 vc1_qsv_decoder_deps="libmfx"
2500 vc1_qsv_decoder_select="qsvdec vc1_qsv_hwaccel"
2501 vc1image_decoder_select="vc1_decoder"
2502 vorbis_decoder_select="mdct"
2503 vorbis_encoder_select="mdct"
2504 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2505 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2506 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2507 vp6a_decoder_select="vp6_decoder"
2508 vp6f_decoder_select="vp6_decoder"
2509 vp7_decoder_select="h264pred videodsp vp8dsp"
2510 vp8_decoder_select="h264pred videodsp vp8dsp"
2511 vp9_decoder_select="videodsp vp9_parser"
2512 webp_decoder_select="vp8_decoder exif"
2513 wmalossless_decoder_select="llauddsp"
2514 wmapro_decoder_select="mdct sinewin wma_freqs"
2515 wmav1_decoder_select="mdct sinewin wma_freqs"
2516 wmav1_encoder_select="mdct sinewin wma_freqs"
2517 wmav2_decoder_select="mdct sinewin wma_freqs"
2518 wmav2_encoder_select="mdct sinewin wma_freqs"
2519 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2520 wmv1_decoder_select="h263_decoder"
2521 wmv1_encoder_select="h263_encoder"
2522 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2523 wmv2_encoder_select="h263_encoder wmv2dsp"
2524 wmv3_decoder_select="vc1_decoder"
2525 wmv3image_decoder_select="wmv3_decoder"
2526 xma1_decoder_select="wmapro_decoder"
2527 xma2_decoder_select="wmapro_decoder"
2528 zerocodec_decoder_select="zlib"
2529 zlib_decoder_select="zlib"
2530 zlib_encoder_select="zlib"
2531 zmbv_decoder_select="zlib"
2532 zmbv_encoder_select="zlib"
2533
2534 # platform codecs
2535 audiotoolbox_deps="AudioToolbox_AudioToolbox_h"
2536 audiotoolbox_extralibs="-framework CoreFoundation -framework AudioToolbox -framework CoreMedia"
2537
2538 # hardware accelerators
2539 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2540 cuvid_deps="cuda"
2541 d3d11va_deps="d3d11_h dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2542 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode"
2543 vaapi_deps="va_va_h"
2544 vda_framework_deps="VideoDecodeAcceleration_VDADecoder_h"
2545 vda_framework_extralibs="-framework VideoDecodeAcceleration"
2546 vda_deps="vda_framework pthreads"
2547 vda_extralibs="-framework CoreFoundation -framework QuartzCore"
2548 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
2549 videotoolbox_hwaccel_deps="videotoolbox pthreads"
2550 videotoolbox_hwaccel_extralibs="-framework QuartzCore"
2551 xvmc_deps="X11_extensions_XvMClib_h"
2552
2553 h263_cuvid_hwaccel_deps="cuda cuvid"
2554 h263_vaapi_hwaccel_deps="vaapi"
2555 h263_vaapi_hwaccel_select="h263_decoder"
2556 h263_videotoolbox_hwaccel_deps="videotoolbox"
2557 h263_videotoolbox_hwaccel_select="h263_decoder"
2558 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2559 h264_cuvid_hwaccel_deps="cuda cuvid"
2560 h264_d3d11va_hwaccel_deps="d3d11va"
2561 h264_d3d11va_hwaccel_select="h264_decoder"
2562 h264_dxva2_hwaccel_deps="dxva2"
2563 h264_dxva2_hwaccel_select="h264_decoder"
2564 h264_mediacodec_decoder_deps="mediacodec"
2565 h264_mediacodec_hwaccel_deps="mediacodec"
2566 h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
2567 h264_mmal_decoder_deps="mmal"
2568 h264_mmal_decoder_select="mmal"
2569 h264_mmal_hwaccel_deps="mmal"
2570 h264_omx_encoder_deps="omx"
2571 h264_qsv_hwaccel_deps="libmfx"
2572 h264_vaapi_hwaccel_deps="vaapi"
2573 h264_vaapi_hwaccel_select="h264_decoder"
2574 h264_vda_decoder_deps="vda"
2575 h264_vda_decoder_select="h264_decoder"
2576 h264_vda_hwaccel_deps="vda"
2577 h264_vda_hwaccel_select="h264_decoder"
2578 h264_vda_old_hwaccel_deps="vda"
2579 h264_vda_old_hwaccel_select="h264_decoder"
2580 h264_vdpau_decoder_deps="vdpau"
2581 h264_vdpau_decoder_select="h264_decoder"
2582 h264_vdpau_hwaccel_deps="vdpau"
2583 h264_vdpau_hwaccel_select="h264_decoder"
2584 h264_videotoolbox_hwaccel_deps="videotoolbox"
2585 h264_videotoolbox_hwaccel_select="h264_decoder"
2586 hevc_cuvid_hwaccel_deps="cuda cuvid"
2587 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2588 hevc_d3d11va_hwaccel_select="hevc_decoder"
2589 hevc_mediacodec_decoder_deps="mediacodec"
2590 hevc_mediacodec_hwaccel_deps="mediacodec"
2591 hevc_mediacodec_decoder_select="hevc_mp4toannexb_bsf hevc_parser"
2592 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2593 hevc_dxva2_hwaccel_select="hevc_decoder"
2594 hevc_qsv_hwaccel_deps="libmfx"
2595 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2596 hevc_vaapi_hwaccel_select="hevc_decoder"
2597 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2598 hevc_vdpau_hwaccel_select="hevc_decoder"
2599 mjpeg_cuvid_hwaccel_deps="cuda cuvid"
2600 mpeg_vdpau_decoder_deps="vdpau"
2601 mpeg_vdpau_decoder_select="mpeg2video_decoder"
2602 mpeg_xvmc_hwaccel_deps="xvmc"
2603 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2604 mpeg1_cuvid_hwaccel_deps="cuda cuvid"
2605 mpeg1_vdpau_decoder_deps="vdpau"
2606 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
2607 mpeg1_vdpau_hwaccel_deps="vdpau"
2608 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2609 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2610 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2611 mpeg1_xvmc_hwaccel_deps="xvmc"
2612 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2613 mpeg2_crystalhd_decoder_select="crystalhd"
2614 mpeg2_cuvid_hwaccel_deps="cuda cuvid"
2615 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2616 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2617 mpeg2_dxva2_hwaccel_deps="dxva2"
2618 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2619 mpeg2_mmal_decoder_deps="mmal"
2620 mpeg2_mmal_decoder_select="mmal"
2621 mpeg2_mmal_hwaccel_deps="mmal"
2622 mpeg2_qsv_hwaccel_deps="libmfx"
2623 mpeg2_qsv_hwaccel_select="qsvdec_mpeg2"
2624 mpeg2_vaapi_hwaccel_deps="vaapi"
2625 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2626 mpeg2_vdpau_hwaccel_deps="vdpau"
2627 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2628 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2629 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2630 mpeg2_xvmc_hwaccel_deps="xvmc"
2631 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2632 mpeg4_crystalhd_decoder_select="crystalhd"
2633 mpeg4_cuvid_hwaccel_deps="cuda cuvid"
2634 mpeg4_mmal_decoder_deps="mmal"
2635 mpeg4_mmal_decoder_select="mmal"
2636 mpeg4_mmal_hwaccel_deps="mmal"
2637 mpeg4_omx_encoder_deps="omx"
2638 mpeg4_vaapi_hwaccel_deps="vaapi"
2639 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2640 mpeg4_vdpau_decoder_deps="vdpau"
2641 mpeg4_vdpau_decoder_select="mpeg4_decoder"
2642 mpeg4_vdpau_hwaccel_deps="vdpau"
2643 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2644 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2645 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2646 msmpeg4_crystalhd_decoder_select="crystalhd"
2647 vc1_crystalhd_decoder_select="crystalhd"
2648 vc1_cuvid_hwaccel_deps="cuda cuvid"
2649 vc1_d3d11va_hwaccel_deps="d3d11va"
2650 vc1_d3d11va_hwaccel_select="vc1_decoder"
2651 vc1_dxva2_hwaccel_deps="dxva2"
2652 vc1_dxva2_hwaccel_select="vc1_decoder"
2653 vc1_mmal_decoder_deps="mmal"
2654 vc1_mmal_decoder_select="mmal"
2655 vc1_mmal_hwaccel_deps="mmal"
2656 vc1_qsv_hwaccel_deps="libmfx"
2657 vc1_qsv_hwaccel_select="qsvdec_vc1"
2658 vc1_vaapi_hwaccel_deps="vaapi"
2659 vc1_vaapi_hwaccel_select="vc1_decoder"
2660 vc1_vdpau_decoder_deps="vdpau"
2661 vc1_vdpau_decoder_select="vc1_decoder"
2662 vc1_vdpau_hwaccel_deps="vdpau"
2663 vc1_vdpau_hwaccel_select="vc1_decoder"
2664 vp8_cuvid_hwaccel_deps="cuda cuvid"
2665 vp9_cuvid_hwaccel_deps="cuda cuvid"
2666 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2667 vp9_d3d11va_hwaccel_select="vp9_decoder"
2668 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
2669 vp9_dxva2_hwaccel_select="vp9_decoder"
2670 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9"
2671 vp9_vaapi_hwaccel_select="vp9_decoder"
2672 wmv3_crystalhd_decoder_select="crystalhd"
2673 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2674 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2675 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2676 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
2677 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2678
2679 # hardware-accelerated codecs
2680 omx_deps="dlopen pthreads"
2681 omx_extralibs='$ldl'
2682 qsvdec_select="qsv"
2683 qsvenc_select="qsv"
2684 vaapi_encode_deps="vaapi"
2685
2686 hwupload_cuda_filter_deps="cuda"
2687 scale_npp_filter_deps="cuda libnpp"
2688
2689 nvenc_deps_any="dlopen LoadLibrary"
2690 nvenc_encoder_deps="nvenc"
2691 h263_cuvid_decoder_deps="cuda cuvid"
2692 h263_cuvid_decoder_select="h263_cuvid_hwaccel"
2693 h264_cuvid_decoder_deps="cuda cuvid"
2694 h264_cuvid_decoder_select="h264_mp4toannexb_bsf h264_cuvid_hwaccel"
2695 h264_nvenc_encoder_deps="nvenc"
2696 h264_qsv_decoder_deps="libmfx"
2697 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2698 h264_qsv_encoder_deps="libmfx"
2699 h264_qsv_encoder_select="qsvenc"
2700 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2701 h264_vaapi_encoder_select="vaapi_encode golomb"
2702
2703 hevc_cuvid_decoder_deps="cuda cuvid"
2704 hevc_cuvid_decoder_select="hevc_mp4toannexb_bsf hevc_cuvid_hwaccel"
2705 hevc_nvenc_encoder_deps="nvenc"
2706 hevc_qsv_decoder_deps="libmfx"
2707 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec hevc_qsv_hwaccel"
2708 hevc_qsv_encoder_deps="libmfx"
2709 hevc_qsv_encoder_select="qsvenc"
2710 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2711 hevc_vaapi_encoder_select="vaapi_encode golomb"
2712 mjpeg_cuvid_decoder_deps="cuda cuvid"
2713 mjpeg_cuvid_decoder_select="mjpeg_cuvid_hwaccel"
2714 mpeg1_cuvid_decoder_deps="cuda cuvid"
2715 mpeg1_cuvid_decoder_select="mpeg1_cuvid_hwaccel"
2716 mpeg2_cuvid_decoder_deps="cuda cuvid"
2717 mpeg2_cuvid_decoder_select="mpeg2_cuvid_hwaccel"
2718 mpeg2_qsv_decoder_deps="libmfx"
2719 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel"
2720 mpeg2_qsv_encoder_deps="libmfx"
2721 mpeg2_qsv_encoder_select="qsvenc"
2722 mpeg4_cuvid_decoder_deps="cuda cuvid"
2723 mpeg4_cuvid_decoder_select="mpeg4_cuvid_hwaccel"
2724 nvenc_h264_encoder_deps="nvenc"
2725 nvenc_hevc_encoder_deps="nvenc"
2726
2727 vc1_cuvid_decoder_deps="cuda cuvid"
2728 vc1_cuvid_decoder_select="vc1_cuvid_hwaccel"
2729 vp8_cuvid_decoder_deps="cuda cuvid"
2730 vp8_cuvid_decoder_select="vp8_cuvid_hwaccel"
2731 vp9_cuvid_decoder_deps="cuda cuvid"
2732 vp9_cuvid_decoder_select="vp9_cuvid_hwaccel"
2733
2734 # parsers
2735 h264_parser_select="golomb h264dsp"
2736 hevc_parser_select="golomb"
2737 mpegvideo_parser_select="mpegvideo"
2738 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
2739 vc1_parser_select="vc1dsp"
2740
2741 # bitstream_filters
2742 mjpeg2jpeg_bsf_select="jpegtables"
2743
2744 # external libraries
2745 aac_at_decoder_deps="audiotoolbox"
2746 ac3_at_decoder_deps="audiotoolbox"
2747 ac3_at_decoder_select="ac3_parser"
2748 adpcm_ima_qt_at_decoder_deps="audiotoolbox"
2749 alac_at_decoder_deps="audiotoolbox"
2750 amr_nb_at_decoder_deps="audiotoolbox"
2751 eac3_at_decoder_deps="audiotoolbox"
2752 eac3_at_decoder_select="ac3_parser"
2753 gsm_ms_at_decoder_deps="audiotoolbox"
2754 ilbc_at_decoder_deps="audiotoolbox"
2755 mp1_at_decoder_deps="audiotoolbox"
2756 mp2_at_decoder_deps="audiotoolbox"
2757 mp3_at_decoder_deps="audiotoolbox"
2758 pcm_alaw_at_decoder_deps="audiotoolbox"
2759 pcm_mulaw_at_decoder_deps="audiotoolbox"
2760 qdmc_at_decoder_deps="audiotoolbox"
2761 qdm2_at_decoder_deps="audiotoolbox"
2762 aac_at_encoder_deps="audiotoolbox"
2763 aac_at_encoder_select="audio_frame_queue"
2764 alac_at_encoder_deps="audiotoolbox"
2765 alac_at_encoder_select="audio_frame_queue"
2766 ilbc_at_encoder_deps="audiotoolbox"
2767 ilbc_at_encoder_select="audio_frame_queue"
2768 pcm_alaw_at_encoder_deps="audiotoolbox"
2769 pcm_alaw_at_encoder_select="audio_frame_queue"
2770 pcm_mulaw_at_encoder_deps="audiotoolbox"
2771 pcm_mulaw_at_encoder_select="audio_frame_queue"
2772 chromaprint_muxer_deps="chromaprint"
2773 h264_videotoolbox_encoder_deps="videotoolbox_encoder pthreads"
2774 libcelt_decoder_deps="libcelt"
2775 libfaac_encoder_deps="libfaac"
2776 libfaac_encoder_select="audio_frame_queue"
2777 libfdk_aac_decoder_deps="libfdk_aac"
2778 libfdk_aac_encoder_deps="libfdk_aac"
2779 libfdk_aac_encoder_select="audio_frame_queue"
2780 libgme_demuxer_deps="libgme"
2781 libgsm_decoder_deps="libgsm"
2782 libgsm_encoder_deps="libgsm"
2783 libgsm_ms_decoder_deps="libgsm"
2784 libgsm_ms_encoder_deps="libgsm"
2785 libilbc_decoder_deps="libilbc"
2786 libilbc_encoder_deps="libilbc"
2787 libkvazaar_encoder_deps="libkvazaar"
2788 libmodplug_demuxer_deps="libmodplug"
2789 libmp3lame_encoder_deps="libmp3lame"
2790 libmp3lame_encoder_select="audio_frame_queue"
2791 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2792 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2793 libopencore_amrnb_encoder_select="audio_frame_queue"
2794 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2795 libopenh264_decoder_deps="libopenh264"
2796 libopenh264_decoder_select="h264_mp4toannexb_bsf"
2797 libopenh264_encoder_deps="libopenh264"
2798 libopenjpeg_decoder_deps="libopenjpeg"
2799 libopenjpeg_encoder_deps="libopenjpeg"
2800 libopenmpt_demuxer_deps="libopenmpt"
2801 libopus_decoder_deps="libopus"
2802 libopus_encoder_deps="libopus"
2803 libopus_encoder_select="audio_frame_queue"
2804 libschroedinger_decoder_deps="libschroedinger"
2805 libschroedinger_encoder_deps="libschroedinger"
2806 libshine_encoder_deps="libshine"
2807 libshine_encoder_select="audio_frame_queue"
2808 libspeex_decoder_deps="libspeex"
2809 libspeex_encoder_deps="libspeex"
2810 libspeex_encoder_select="audio_frame_queue"
2811 libtheora_encoder_deps="libtheora"
2812 libtwolame_encoder_deps="libtwolame"
2813 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2814 libvorbis_decoder_deps="libvorbis"
2815 libvorbis_encoder_deps="libvorbis"
2816 libvorbis_encoder_select="audio_frame_queue"
2817 libvpx_vp8_decoder_deps="libvpx"
2818 libvpx_vp8_encoder_deps="libvpx"
2819 libvpx_vp9_decoder_deps="libvpx"
2820 libvpx_vp9_encoder_deps="libvpx"
2821 libwavpack_encoder_deps="libwavpack"
2822 libwebp_encoder_deps="libwebp"
2823 libwebp_anim_encoder_deps="libwebp"
2824 libx262_encoder_deps="libx262"
2825 libx264_encoder_deps="libx264"
2826 libx264rgb_encoder_deps="libx264 x264_csp_bgr"
2827 libx264rgb_encoder_select="libx264_encoder"
2828 libx265_encoder_deps="libx265"
2829 libxavs_encoder_deps="libxavs"
2830 libxvid_encoder_deps="libxvid"
2831 libzvbi_teletext_decoder_deps="libzvbi"
2832 videotoolbox_deps="VideoToolbox_VideoToolbox_h"
2833 videotoolbox_extralibs="-framework CoreFoundation -framework VideoToolbox -framework CoreMedia -framework CoreVideo"
2834 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
2835 videotoolbox_encoder_suggest="vda_framework vt_bt2020"
2836 vt_bt2020_deps="kCVImageBufferColorPrimaries_ITU_R_2020"
2837
2838 # demuxers / muxers
2839 ac3_demuxer_select="ac3_parser"
2840 asf_demuxer_select="riffdec"
2841 asf_o_demuxer_select="riffdec"
2842 asf_muxer_select="riffenc"
2843 asf_stream_muxer_select="asf_muxer"
2844 avi_demuxer_select="iso_media riffdec exif"
2845 avi_muxer_select="riffenc"
2846 avisynth_demuxer_deps="avisynth"
2847 avisynth_demuxer_select="riffdec"
2848 caf_demuxer_select="iso_media riffdec"
2849 dash_muxer_select="mp4_muxer"
2850 dirac_demuxer_select="dirac_parser"
2851 dts_demuxer_select="dca_parser"
2852 dtshd_demuxer_select="dca_parser"
2853 dv_demuxer_select="dvprofile"
2854 dv_muxer_select="dvprofile"
2855 dxa_demuxer_select="riffdec"
2856 eac3_demuxer_select="ac3_parser"
2857 f4v_muxer_select="mov_muxer"
2858 fifo_muxer_deps="threads"
2859 flac_demuxer_select="flac_parser"
2860 hds_muxer_select="flv_muxer"
2861 hls_muxer_select="mpegts_muxer"
2862 image2_alias_pix_demuxer_select="image2_demuxer"
2863 image2_brender_pix_demuxer_select="image2_demuxer"
2864 ipod_muxer_select="mov_muxer"
2865 ismv_muxer_select="mov_muxer"
2866 libnut_demuxer_deps="libnut"
2867 libnut_muxer_deps="libnut"
2868 matroska_audio_muxer_select="matroska_muxer"
2869 matroska_demuxer_select="iso_media riffdec"
2870 matroska_demuxer_suggest="bzlib lzo zlib"
2871 matroska_muxer_select="iso_media riffenc"
2872 mmf_muxer_select="riffenc"
2873 mov_demuxer_select="iso_media riffdec"
2874 mov_demuxer_suggest="zlib"
2875 mov_muxer_select="iso_media riffenc rtpenc_chain"
2876 mp3_demuxer_select="mpegaudio_parser"
2877 mp4_muxer_select="mov_muxer"
2878 mpegts_demuxer_select="iso_media"
2879 mpegts_muxer_select="adts_muxer latm_muxer"
2880 mpegtsraw_demuxer_select="mpegts_demuxer"
2881 mxf_d10_muxer_select="mxf_muxer"
2882 mxf_opatom_muxer_select="mxf_muxer"
2883 nut_muxer_select="riffenc"
2884 nuv_demuxer_select="riffdec"
2885 oga_muxer_select="ogg_muxer"
2886 ogg_demuxer_select="dirac_parse"
2887 ogv_muxer_select="ogg_muxer"
2888 opus_muxer_select="ogg_muxer"
2889 psp_muxer_select="mov_muxer"
2890 rtp_demuxer_select="sdp_demuxer"
2891 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
2892 rtsp_demuxer_select="http_protocol rtpdec"
2893 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2894 sap_demuxer_select="sdp_demuxer"
2895 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2896 sdp_demuxer_select="rtpdec"
2897 smoothstreaming_muxer_select="ismv_muxer"
2898 spdif_muxer_select="aac_parser"
2899 spx_muxer_select="ogg_muxer"
2900 swf_demuxer_suggest="zlib"
2901 tak_demuxer_select="tak_parser"
2902 tg2_muxer_select="mov_muxer"
2903 tgp_muxer_select="mov_muxer"
2904 vobsub_demuxer_select="mpegps_demuxer"
2905 w64_demuxer_select="wav_demuxer"
2906 w64_muxer_select="wav_muxer"
2907 wav_demuxer_select="riffdec"
2908 wav_muxer_select="riffenc"
2909 webm_muxer_select="iso_media riffenc"
2910 webm_dash_manifest_demuxer_select="matroska_demuxer"
2911 wtv_demuxer_select="mpegts_demuxer riffdec"
2912 wtv_muxer_select="mpegts_muxer riffenc"
2913 xmv_demuxer_select="riffdec"
2914 xwma_demuxer_select="riffdec"
2915
2916 # indevs / outdevs
2917 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2918 alsa_outdev_deps="alsa_asoundlib_h"
2919 avfoundation_indev_extralibs="-framework CoreVideo -framework Foundation -framework AVFoundation -framework CoreMedia"
2920 avfoundation_indev_select="avfoundation"
2921 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2922 caca_outdev_deps="libcaca"
2923 decklink_indev_deps="decklink pthreads"
2924 decklink_indev_extralibs="-lstdc++"
2925 decklink_outdev_deps="decklink pthreads"
2926 decklink_outdev_extralibs="-lstdc++"
2927 dshow_indev_deps="IBaseFilter"
2928 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
2929 dv1394_indev_deps="dv1394"
2930 dv1394_indev_select="dv_demuxer"
2931 fbdev_indev_deps="linux_fb_h"
2932 fbdev_outdev_deps="linux_fb_h"
2933 gdigrab_indev_deps="CreateDIBSection"
2934 gdigrab_indev_extralibs="-lgdi32"
2935 gdigrab_indev_select="bmp_decoder"
2936 iec61883_indev_deps="libiec61883"
2937 jack_indev_deps="jack_jack_h"
2938 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
2939 lavfi_indev_deps="avfilter"
2940 libcdio_indev_deps="libcdio"
2941 libdc1394_indev_deps="libdc1394"
2942 libv4l2_indev_deps="libv4l2"
2943 openal_indev_deps="openal"
2944 opengl_outdev_deps="opengl"
2945 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2946 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2947 pulse_indev_deps="libpulse"
2948 pulse_outdev_deps="libpulse"
2949 qtkit_indev_extralibs="-framework QTKit -framework Foundation -framework QuartzCore"
2950 qtkit_indev_select="qtkit"
2951 sdl2_outdev_deps="sdl2"
2952 sndio_indev_deps="sndio_h"
2953 sndio_outdev_deps="sndio_h"
2954 v4l_indev_deps="linux_videodev_h"
2955 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2956 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
2957 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2958 vfwcap_indev_extralibs="-lavicap32"
2959 x11grab_indev_deps="x11grab"
2960 x11grab_xcb_indev_deps="libxcb"
2961 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
2962 xv_outdev_extralibs="-lXv -lX11 -lXext"
2963
2964 # protocols
2965 async_protocol_deps="threads"
2966 bluray_protocol_deps="libbluray"
2967 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2968 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
2969 ffrtmpcrypt_protocol_select="tcp_protocol"
2970 ffrtmphttp_protocol_deps="!librtmp_protocol"
2971 ffrtmphttp_protocol_select="http_protocol"
2972 ftp_protocol_select="tcp_protocol"
2973 gopher_protocol_select="network"
2974 http_protocol_select="tcp_protocol"
2975 httpproxy_protocol_select="tcp_protocol"
2976 https_protocol_select="tls_protocol"
2977 icecast_protocol_select="http_protocol"
2978 librtmp_protocol_deps="librtmp"
2979 librtmpe_protocol_deps="librtmp"
2980 librtmps_protocol_deps="librtmp"
2981 librtmpt_protocol_deps="librtmp"
2982 librtmpte_protocol_deps="librtmp"
2983 libsmbclient_protocol_deps="libsmbclient gplv3"
2984 libssh_protocol_deps="libssh"
2985 mmsh_protocol_select="http_protocol"
2986 mmst_protocol_select="network"
2987 rtmp_protocol_deps="!librtmp_protocol"
2988 rtmp_protocol_select="tcp_protocol"
2989 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2990 rtmps_protocol_deps="!librtmp_protocol"
2991 rtmps_protocol_select="tls_protocol"
2992 rtmpt_protocol_select="ffrtmphttp_protocol"
2993 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2994 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2995 rtp_protocol_select="udp_protocol"
2996 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
2997 sctp_protocol_select="network"
2998 srtp_protocol_select="rtp_protocol srtp"
2999 tcp_protocol_select="network"
3000 tls_gnutls_protocol_deps="gnutls !tls_schannel_protocol !tls_securetransport_protocol"
3001 tls_gnutls_protocol_select="tcp_protocol"
3002 tls_openssl_protocol_deps="openssl !tls_schannel_protocol !tls_securetransport_protocol !tls_gnutls_protocol"
3003 tls_openssl_protocol_select="tcp_protocol"
3004 tls_schannel_protocol_deps="schannel"
3005 tls_schannel_protocol_select="tcp_protocol"
3006 tls_securetransport_protocol_deps="securetransport"
3007 tls_securetransport_protocol_select="tcp_protocol"
3008 tls_protocol_deps_any="tls_schannel_protocol tls_securetransport_protocol tls_gnutls_protocol tls_openssl_protocol"
3009 udp_protocol_select="network"
3010 udplite_protocol_select="network"
3011 unix_protocol_deps="sys_un_h"
3012 unix_protocol_select="network"
3013
3014 # filters
3015 afftfilt_filter_deps="avcodec"
3016 afftfilt_filter_select="fft"
3017 amovie_filter_deps="avcodec avformat"
3018 aresample_filter_deps="swresample"
3019 ass_filter_deps="libass"
3020 asyncts_filter_deps="avresample"
3021 atempo_filter_deps="avcodec"
3022 atempo_filter_select="rdft"
3023 azmq_filter_deps="libzmq"
3024 blackframe_filter_deps="gpl"
3025 boxblur_filter_deps="gpl"
3026 bs2b_filter_deps="libbs2b"
3027 colormatrix_filter_deps="gpl"
3028 cover_rect_filter_deps="avcodec avformat gpl"
3029 cropdetect_filter_deps="gpl"
3030 delogo_filter_deps="gpl"
3031 deshake_filter_select="pixelutils"
3032 drawtext_filter_deps="libfreetype"
3033 ebur128_filter_deps="gpl"
3034 eq_filter_deps="gpl"
3035 fftfilt_filter_deps="avcodec"
3036 fftfilt_filter_select="rdft"
3037 find_rect_filter_deps="avcodec avformat gpl"
3038 firequalizer_filter_deps="avcodec"
3039 firequalizer_filter_select="rdft"
3040 flite_filter_deps="libflite"
3041 framerate_filter_select="pixelutils"
3042 frei0r_filter_deps="frei0r dlopen"
3043 frei0r_src_filter_deps="frei0r dlopen"
3044 fspp_filter_deps="gpl"
3045 geq_filter_deps="gpl"
3046 histeq_filter_deps="gpl"
3047 hqdn3d_filter_deps="gpl"
3048 interlace_filter_deps="gpl"
3049 kerndeint_filter_deps="gpl"
3050 ladspa_filter_deps="ladspa dlopen"
3051 loudnorm_filter_deps="libebur128"
3052 mcdeint_filter_deps="avcodec gpl"
3053 movie_filter_deps="avcodec avformat"
3054 mpdecimate_filter_deps="gpl"
3055 mpdecimate_filter_select="pixelutils"
3056 mptestsrc_filter_deps="gpl"
3057 negate_filter_deps="lut_filter"
3058 nnedi_filter_deps="gpl"
3059 ocr_filter_deps="libtesseract"
3060 ocv_filter_deps="libopencv"
3061 owdenoise_filter_deps="gpl"
3062 pan_filter_deps="swresample"
3063 perspective_filter_deps="gpl"
3064 phase_filter_deps="gpl"
3065 pp7_filter_deps="gpl"
3066 pp_filter_deps="gpl postproc"
3067 pullup_filter_deps="gpl"
3068 removelogo_filter_deps="avcodec avformat swscale"
3069 repeatfields_filter_deps="gpl"
3070 resample_filter_deps="avresample"
3071 rubberband_filter_deps="librubberband"
3072 sab_filter_deps="gpl swscale"
3073 scale2ref_filter_deps="swscale"
3074 scale_filter_deps="swscale"
3075 select_filter_select="pixelutils"
3076 showcqt_filter_deps="avcodec avformat swscale"
3077 showcqt_filter_select="fft"
3078 showfreqs_filter_deps="avcodec"
3079 showfreqs_filter_select="fft"
3080 showspectrum_filter_deps="avcodec"
3081 showspectrum_filter_select="fft"
3082 showspectrumpic_filter_deps="avcodec"
3083 showspectrumpic_filter_select="fft"
3084 smartblur_filter_deps="gpl swscale"
3085 sofalizer_filter_deps="netcdf avcodec"
3086 sofalizer_filter_select="fft"
3087 spectrumsynth_filter_deps="avcodec"
3088 spectrumsynth_filter_select="fft"
3089 spp_filter_deps="gpl avcodec"
3090 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3091 stereo3d_filter_deps="gpl"
3092 subtitles_filter_deps="avformat avcodec libass"
3093 super2xsai_filter_deps="gpl"
3094 pixfmts_super2xsai_test_deps="super2xsai_filter"
3095 tinterlace_filter_deps="gpl"
3096 tinterlace_merge_test_deps="tinterlace_filter"
3097 tinterlace_pad_test_deps="tinterlace_filter"
3098 uspp_filter_deps="gpl avcodec"
3099 vaguedenoiser_filter_deps="gpl"
3100 vidstabdetect_filter_deps="libvidstab"
3101 vidstabtransform_filter_deps="libvidstab"
3102 zmq_filter_deps="libzmq"
3103 zoompan_filter_deps="swscale"
3104 zscale_filter_deps="libzimg"
3105 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3106
3107 # examples
3108 avcodec_example_deps="avcodec avutil"
3109 avio_dir_cmd="avformat avutil"
3110 avio_reading="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 metadata_example_deps="avformat avutil"
3118 muxing_example_deps="avcodec avformat avutil swscale"
3119 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder vaapi_x11"
3120 remuxing_example_deps="avcodec avformat avutil"
3121 resampling_audio_example_deps="avutil swresample"
3122 scaling_video_example_deps="avutil swscale"
3123 transcode_aac_example_deps="avcodec avformat swresample"
3124 transcoding_example_deps="avfilter avcodec avformat avutil"
3125
3126 # libraries, in linking order
3127 avcodec_deps="avutil"
3128 avdevice_deps="avformat avcodec avutil"
3129 avfilter_deps="avutil"
3130 avformat_deps="avcodec avutil"
3131 avresample_deps="avutil"
3132 postproc_deps="avutil gpl"
3133 swresample_deps="avutil"
3134 swscale_deps="avutil"
3135
3136 # programs
3137 ffmpeg_deps="avcodec avfilter avformat swresample"
3138 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3139                null_filter
3140                setpts_filter trim_filter"
3141 ffplay_deps="avcodec avformat swscale swresample sdl2"
3142 ffplay_libs='$sdl2_libs'
3143 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3144 ffprobe_deps="avcodec avformat"
3145 ffserver_deps="avformat fork sarestart"
3146 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
3147
3148 # documentation
3149 podpages_deps="perl"
3150 manpages_deps="perl pod2man"
3151 htmlpages_deps="perl"
3152 htmlpages_deps_any="makeinfo_html texi2html"
3153 txtpages_deps="perl makeinfo"
3154 doc_deps_any="manpages htmlpages podpages txtpages"
3155
3156 # default parameters
3157
3158 logfile="config.log"
3159
3160 # installation paths
3161 prefix_default="/usr/local"
3162 bindir_default='${prefix}/bin'
3163 datadir_default='${prefix}/share/ffmpeg'
3164 docdir_default='${prefix}/share/doc/ffmpeg'
3165 incdir_default='${prefix}/include'
3166 libdir_default='${prefix}/lib'
3167 mandir_default='${prefix}/share/man'
3168
3169 # toolchain
3170 ar_default="ar"
3171 cc_default="gcc"
3172 cxx_default="g++"
3173 host_cc_default="gcc"
3174 cp_f="cp -f"
3175 doxygen_default="doxygen"
3176 install="install"
3177 ln_s_default="ln -s -f"
3178 nm_default="nm -g"
3179 objformat="elf"
3180 pkg_config_default=pkg-config
3181 ranlib_default="ranlib"
3182 strip_default="strip"
3183 version_script='--version-script'
3184 yasmexe_default="yasm"
3185 windres_default="windres"
3186
3187 # OS
3188 target_os_default=$(tolower $(uname -s))
3189 host_os=$target_os_default
3190
3191 # machine
3192 if test "$target_os_default" = aix; then
3193     arch_default=$(uname -p)
3194     strip_default="strip -X32_64"
3195 else
3196     arch_default=$(uname -m)
3197 fi
3198 cpu="generic"
3199 intrinsics="none"
3200
3201 # configurable options
3202 enable $PROGRAM_LIST
3203 enable $DOCUMENT_LIST
3204 enable $EXAMPLE_LIST
3205 enable $(filter_out avresample $LIBRARY_LIST)
3206 enable stripping
3207
3208 enable asm
3209 enable debug
3210 enable doc
3211 enable faan faandct faanidct
3212 enable optimizations
3213 enable runtime_cpudetect
3214 enable safe_bitstream_reader
3215 enable static
3216 enable swscale_alpha
3217 enable valgrind_backtrace
3218
3219 sws_max_filter_size_default=256
3220 set_default sws_max_filter_size
3221
3222 # Enable platform codecs by default.
3223 enable audiotoolbox
3224
3225 # Enable hwaccels by default.
3226 enable d3d11va dxva2 vaapi vda vdpau videotoolbox_hwaccel xvmc
3227 enable xlib
3228
3229 enable nvenc vda_framework videotoolbox videotoolbox_encoder
3230
3231 # build settings
3232 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3233 LIBPREF="lib"
3234 LIBSUF=".a"
3235 FULLNAME='$(NAME)$(BUILDSUF)'
3236 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3237 SLIBPREF="lib"
3238 SLIBSUF=".so"
3239 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3240 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3241 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3242 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3243 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3244 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3245 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
3246
3247 asflags_filter=echo
3248 cflags_filter=echo
3249 ldflags_filter=echo
3250
3251 AS_C='-c'
3252 AS_O='-o $@'
3253 CC_C='-c'
3254 CC_E='-E -o $@'
3255 CC_O='-o $@'
3256 CXX_C='-c'
3257 CXX_O='-o $@'
3258 OBJCC_C='-c'
3259 OBJCC_E='-E -o $@'
3260 OBJCC_O='-o $@'
3261 LD_O='-o $@'
3262 LD_LIB='-l%'
3263 LD_PATH='-L'
3264 HOSTCC_C='-c'
3265 HOSTCC_E='-E -o $@'
3266 HOSTCC_O='-o $@'
3267 HOSTLD_O='-o $@'
3268
3269 host_libs='-lm'
3270 host_cflags_filter=echo
3271 host_ldflags_filter=echo
3272
3273 target_path='$(CURDIR)'
3274
3275 # since the object filename is not given with the -MM flag, the compiler
3276 # is only able to print the basename, and we must add the path ourselves
3277 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3278 DEPFLAGS='-MM'
3279
3280 # find source path
3281 if test -f configure; then
3282     source_path=.
3283 else
3284     source_path=$(cd $(dirname "$0"); pwd)
3285     case "$source_path" in
3286         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3287     esac
3288     test -e "$source_path/config.h" &&
3289         die "Out of tree builds are impossible with config.h in source dir."
3290 fi
3291
3292 for v in "$@"; do
3293     r=${v#*=}
3294     l=${v%"$r"}
3295     r=$(sh_quote "$r")
3296     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3297 done
3298
3299 find_things(){
3300     thing=$1
3301     pattern=$2
3302     file=$source_path/$3
3303     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
3304 }
3305
3306 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
3307 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
3308 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
3309 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
3310 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
3311 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
3312 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
3313 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
3314 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
3315
3316 find_things_extern(){
3317     thing=$1
3318     pattern=$2
3319     file=$source_path/$3
3320     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
3321 }
3322
3323 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3324 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3325
3326 ALL_COMPONENTS="
3327     $BSF_LIST
3328     $DECODER_LIST
3329     $DEMUXER_LIST
3330     $ENCODER_LIST
3331     $FILTER_LIST
3332     $HWACCEL_LIST
3333     $INDEV_LIST
3334     $MUXER_LIST
3335     $OUTDEV_LIST
3336     $PARSER_LIST
3337     $PROTOCOL_LIST
3338 "
3339
3340 for n in $COMPONENT_LIST; do
3341     v=$(toupper ${n%s})_LIST
3342     eval enable \$$v
3343     eval ${n}_if_any="\$$v"
3344 done
3345
3346 enable $ARCH_EXT_LIST
3347
3348 die_unknown(){
3349     echo "Unknown option \"$1\"."
3350     echo "See $0 --help for available options."
3351     exit 1
3352 }
3353
3354 print_in_columns() {
3355     cols=$(expr $ncols / 24)
3356     cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
3357 }
3358
3359 show_list() {
3360     suffix=_$1
3361     shift
3362     echo $* | sed s/$suffix//g | print_in_columns
3363     exit 0
3364 }
3365
3366 rand_list(){
3367     IFS=', '
3368     set -- $*
3369     unset IFS
3370     for thing; do
3371         comp=${thing%:*}
3372         prob=${thing#$comp}
3373         prob=${prob#:}
3374         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3375         echo "prob ${prob:-0.5}"
3376         printf '%s\n' $comp
3377     done
3378 }
3379
3380 do_random(){
3381     action=$1
3382     shift
3383     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3384     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3385 }
3386
3387 for opt do
3388     optval="${opt#*=}"
3389     case "$opt" in
3390         --extra-ldflags=*)
3391             add_ldflags $optval
3392         ;;
3393         --extra-ldexeflags=*)
3394             add_ldexeflags $optval
3395         ;;
3396         --extra-ldlibflags=*)
3397             add_ldlibflags $optval
3398         ;;
3399         --extra-libs=*)
3400             add_extralibs $optval
3401         ;;
3402         --disable-devices)
3403             disable $INDEV_LIST $OUTDEV_LIST
3404         ;;
3405         --enable-debug=*)
3406             debuglevel="$optval"
3407         ;;
3408         --disable-programs)
3409             disable $PROGRAM_LIST
3410         ;;
3411         --disable-everything)
3412             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3413         ;;
3414         --disable-all)
3415             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3416             disable $LIBRARY_LIST $PROGRAM_LIST doc
3417             enable avutil
3418         ;;
3419         --enable-random|--disable-random)
3420             action=${opt%%-random}
3421             do_random ${action#--} $COMPONENT_LIST
3422         ;;
3423         --enable-random=*|--disable-random=*)
3424             action=${opt%%-random=*}
3425             do_random ${action#--} $optval
3426         ;;
3427         --enable-*=*|--disable-*=*)
3428             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3429             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3430             eval list=\$$(toupper $thing)_LIST
3431             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3432             list=$(filter "$name" $list)
3433             [ "$list" = "" ] && warn "Option $opt did not match anything"
3434             $action $list
3435         ;;
3436         --enable-?*|--disable-?*)
3437             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3438             if is_in $option $COMPONENT_LIST; then
3439                 test $action = disable && action=unset
3440                 eval $action \$$(toupper ${option%s})_LIST
3441             elif is_in $option $CMDLINE_SELECT; then
3442                 $action $option
3443             else
3444                 die_unknown $opt
3445             fi
3446         ;;
3447         --list-*)
3448             NAME="${opt#--list-}"
3449             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3450             NAME=${NAME%s}
3451             eval show_list $NAME \$$(toupper $NAME)_LIST
3452         ;;
3453         --help|-h) show_help
3454         ;;
3455         --fatal-warnings) enable fatal_warnings
3456         ;;
3457         *)
3458             optname="${opt%%=*}"
3459             optname="${optname#--}"
3460             optname=$(echo "$optname" | sed 's/-/_/g')
3461             if is_in $optname $CMDLINE_SET; then
3462                 eval $optname='$optval'
3463             elif is_in $optname $CMDLINE_APPEND; then
3464                 append $optname "$optval"
3465             else
3466                 die_unknown $opt
3467             fi
3468         ;;
3469     esac
3470 done
3471
3472 for e in $env; do
3473     eval "export $e"
3474 done
3475
3476 disabled logging && logfile=/dev/null
3477
3478 # Disable all the library-specific components if the library itself
3479 # is disabled, see AVCODEC_LIST and following _LIST variables.
3480
3481 disable_components(){
3482     disabled ${1} && disable $(
3483         eval components="\$$(toupper ${1})_COMPONENTS"
3484         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
3485     )
3486 }
3487
3488 map 'disable_components $v' $LIBRARY_LIST
3489
3490 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
3491 set >> $logfile
3492
3493 test -n "$valgrind" && toolchain="valgrind-memcheck"
3494
3495 case "$toolchain" in
3496     *-asan)
3497         cc_default="${toolchain%-asan}"
3498         add_cflags  -fsanitize=address
3499         add_ldflags -fsanitize=address
3500     ;;
3501     *-msan)
3502         cc_default="${toolchain%-msan}"
3503         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
3504         add_ldflags -fsanitize=memory
3505     ;;
3506     *-tsan)
3507         cc_default="${toolchain%-tsan}"
3508         add_cflags  -fsanitize=thread -pie
3509         add_ldflags -fsanitize=thread -pie
3510         case "$toolchain" in
3511             gcc-tsan)
3512                 add_cflags  -fPIC
3513                 add_ldflags -fPIC
3514                 ;;
3515         esac
3516     ;;
3517     *-usan)
3518         cc_default="${toolchain%-usan}"
3519         add_cflags  -fsanitize=undefined
3520         add_ldflags -fsanitize=undefined
3521     ;;
3522     valgrind-*)
3523         target_exec_default="valgrind"
3524         case "$toolchain" in
3525             valgrind-massif)
3526                 target_exec_args="--tool=massif --alloc-fn=av_malloc --alloc-fn=av_mallocz --alloc-fn=av_calloc --alloc-fn=av_fast_padded_malloc --alloc-fn=av_fast_malloc --alloc-fn=av_realloc_f --alloc-fn=av_fast_realloc --alloc-fn=av_realloc"
3527                 ;;
3528             valgrind-memcheck)
3529                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3530                 ;;
3531         esac
3532     ;;
3533     msvc)
3534         # Check whether the current MSVC version needs the C99 converter.
3535         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3536         # support enough of C99 to build ffmpeg. Default to the new
3537         # behaviour if the regexp was unable to match anything, since this
3538         # successfully parses the version number of existing supported
3539         # versions that require the converter (MSVC 2010 and 2012).
3540         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3541         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3542             cc_default="cl"
3543         else
3544             cc_default="c99wrap cl"
3545         fi
3546         ld_default="$source_path/compat/windows/mslink"
3547         nm_default="dumpbin -symbols"
3548         ar_default="lib"
3549         case "$arch" in
3550         arm*)
3551             as_default="armasm"
3552             ;;
3553         esac
3554         target_os_default="win32"
3555         # Use a relative path for TMPDIR. This makes sure all the
3556         # ffconf temp files are written with a relative path, avoiding
3557         # issues with msys/win32 path conversion for MSVC parameters
3558         # such as -Fo<file> or -out:<file>.
3559         TMPDIR=.
3560     ;;
3561     icl)
3562         cc_default="icl"
3563         ld_default="xilink"
3564         nm_default="dumpbin -symbols"
3565         ar_default="xilib"
3566         target_os_default="win32"
3567         TMPDIR=.
3568     ;;
3569     gcov)
3570         add_cflags  -fprofile-arcs -ftest-coverage
3571         add_ldflags -fprofile-arcs -ftest-coverage
3572     ;;
3573     llvm-cov)
3574         add_cflags -fprofile-arcs -ftest-coverage
3575         add_ldflags --coverage
3576     ;;
3577     hardened)
3578         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3579         add_cflags   -fno-strict-overflow -fstack-protector-all
3580         add_ldflags  -Wl,-z,relro -Wl,-z,now
3581     ;;
3582     ?*)
3583         die "Unknown toolchain $toolchain"
3584     ;;
3585 esac
3586
3587 test -n "$cross_prefix" && enable cross_compile
3588
3589 if enabled cross_compile; then
3590     test -n "$arch" && test -n "$target_os" ||
3591         die "Must specify target arch and OS when cross-compiling"
3592 fi
3593
3594 ar_default="${cross_prefix}${ar_default}"
3595 cc_default="${cross_prefix}${cc_default}"
3596 cxx_default="${cross_prefix}${cxx_default}"
3597 nm_default="${cross_prefix}${nm_default}"
3598 pkg_config_default="${cross_prefix}${pkg_config_default}"
3599 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
3600     ranlib_default="${cross_prefix}${ranlib_default} -D"
3601 else
3602     ranlib_default="${cross_prefix}${ranlib_default}"
3603 fi
3604 strip_default="${cross_prefix}${strip_default}"
3605 windres_default="${cross_prefix}${windres_default}"
3606
3607 sysinclude_default="${sysroot}/usr/include"
3608
3609 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3610     target_exec target_os yasmexe
3611 enabled cross_compile || host_cc_default=$cc
3612 set_default host_cc
3613
3614 pkg_config_fail_message=""
3615 if ! $pkg_config --version >/dev/null 2>&1; then
3616     warn "$pkg_config not found, library detection may fail."
3617     pkg_config=false
3618 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
3619     pkg_config_fail_message="
3620 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
3621 fi
3622
3623 if test $doxygen != $doxygen_default && \
3624   ! $doxygen --version >/dev/null 2>&1; then
3625     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3626 fi
3627
3628 exesuf() {
3629     case $1 in
3630         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3631     esac
3632 }
3633
3634 EXESUF=$(exesuf $target_os)
3635 HOSTEXESUF=$(exesuf $host_os)
3636
3637 # set temporary file name
3638 : ${TMPDIR:=$TEMPDIR}
3639 : ${TMPDIR:=$TMP}
3640 : ${TMPDIR:=/tmp}
3641
3642 if [ -n "$tempprefix" ] ; then
3643     mktemp(){
3644         echo $tempprefix.${HOSTNAME}.${UID}
3645     }
3646 elif ! check_cmd mktemp -u XXXXXX; then
3647     # simple replacement for missing mktemp
3648     # NOT SAFE FOR GENERAL USE
3649     mktemp(){
3650         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3651     }
3652 fi
3653
3654 tmpfile(){
3655     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
3656         (set -C; exec > $tmp) 2>/dev/null ||
3657         die "Unable to create temporary file in $TMPDIR."
3658     append TMPFILES $tmp
3659     eval $1=$tmp
3660 }
3661
3662 trap 'rm -f -- $TMPFILES' EXIT
3663
3664 tmpfile TMPASM .asm
3665 tmpfile TMPC   .c
3666 tmpfile TMPCPP .cpp
3667 tmpfile TMPE   $EXESUF
3668 tmpfile TMPH   .h
3669 tmpfile TMPM   .m
3670 tmpfile TMPO   .o
3671 tmpfile TMPS   .S
3672 tmpfile TMPSH  .sh
3673 tmpfile TMPV   .ver
3674
3675 unset -f mktemp
3676
3677 chmod +x $TMPE
3678
3679 # make sure we can execute files in $TMPDIR
3680 cat > $TMPSH 2>> $logfile <<EOF
3681 #! /bin/sh
3682 EOF
3683 chmod +x $TMPSH >> $logfile 2>&1
3684 if ! $TMPSH >> $logfile 2>&1; then
3685     cat <<EOF
3686 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3687 variable to another directory and make sure that it is not mounted noexec.
3688 EOF
3689     die "Sanity test failed."
3690 fi
3691
3692 armasm_flags(){
3693     for flag; do
3694         case $flag in
3695             # Filter out MSVC cl.exe options from cflags that shouldn't
3696             # be passed to gas-preprocessor
3697             -M[TD]*)                                            ;;
3698             *)                  echo $flag                      ;;
3699         esac
3700    done
3701 }
3702
3703 ccc_flags(){
3704     for flag; do
3705         case $flag in
3706             -std=c99)           echo -c99                       ;;
3707             -mcpu=*)            echo -arch ${flag#*=}           ;;
3708             -mieee)             echo -ieee                      ;;
3709             -O*|-fast)          echo $flag                      ;;
3710             -fno-math-errno)    echo -assume nomath_errno       ;;
3711             -g)                 echo -g3                        ;;
3712             -Wall)              echo -msg_enable level2         ;;
3713             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
3714             -Wl,*)              echo $flag                      ;;
3715             -f*|-W*)                                            ;;
3716             *)                  echo $flag                      ;;
3717         esac
3718    done
3719 }
3720
3721 cparser_flags(){
3722     for flag; do
3723         case $flag in
3724             -Wno-switch)             echo -Wno-switch-enum ;;
3725             -Wno-format-zero-length) ;;
3726             -Wdisabled-optimization) ;;
3727             -Wno-pointer-sign)       echo -Wno-other ;;
3728             *)                       echo $flag ;;
3729         esac
3730     done
3731 }
3732
3733 msvc_common_flags(){
3734     for flag; do
3735         case $flag in
3736             # In addition to specifying certain flags under the compiler
3737             # specific filters, they must be specified here as well or else the
3738             # generic catch all at the bottom will print the original flag.
3739             -Wall)                ;;
3740             -std=c99)             ;;
3741             # Common flags
3742             -fomit-frame-pointer) ;;
3743             -g)                   echo -Z7 ;;
3744             -fno-math-errno)      ;;
3745             -fno-common)          ;;
3746             -fno-signed-zeros)    ;;
3747             -fPIC)                ;;
3748             -mthumb)              ;;
3749             -march=*)             ;;
3750             -lz)                  echo zlib.lib ;;
3751             -lavifil32)           echo vfw32.lib ;;
3752             -lavicap32)           echo vfw32.lib user32.lib ;;
3753             -lx264)               echo libx264.lib ;;
3754             -l*)                  echo ${flag#-l}.lib ;;
3755             -LARGEADDRESSAWARE)   echo $flag ;;
3756             -L*)                  echo -libpath:${flag#-L} ;;
3757             *)                    echo $flag ;;
3758         esac
3759     done
3760 }
3761
3762 msvc_flags(){
3763     msvc_common_flags "$@"
3764     for flag; do
3765         case $flag in
3766             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3767                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3768                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3769                                        -wd4307 \
3770                                        -wd4273 -wd4554 -wd4701 ;;
3771         esac
3772     done
3773 }
3774
3775 icl_flags(){
3776     msvc_common_flags "$@"
3777     for flag; do
3778         case $flag in
3779             # Despite what Intel's documentation says -Wall, which is supported
3780             # on Windows, does enable remarks so disable them here.
3781             -Wall)                echo $flag -Qdiag-disable:remark ;;
3782             -std=c99)             echo -Qstd=c99 ;;
3783             -flto)                echo -ipo ;;
3784         esac
3785     done
3786 }
3787
3788 icc_flags(){
3789     for flag; do
3790         case $flag in
3791             -flto)                echo -ipo ;;
3792             *)                    echo $flag ;;
3793         esac
3794     done
3795 }
3796
3797 pgi_flags(){
3798     for flag; do
3799         case $flag in
3800             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3801             -fomit-frame-pointer) echo -Mnoframe ;;
3802             -g)                   echo -gopt ;;
3803             *)                    echo $flag ;;
3804         esac
3805     done
3806 }
3807
3808 suncc_flags(){
3809     for flag; do
3810         case $flag in
3811             -march=*|-mcpu=*)
3812                 case "${flag#*=}" in
3813                     native)                   echo -xtarget=native       ;;
3814                     v9|niagara)               echo -xarch=sparc          ;;
3815                     ultrasparc)               echo -xarch=sparcvis       ;;
3816                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3817                     i586|pentium)             echo -xchip=pentium        ;;
3818                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3819                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3820                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3821                     pentium4*)          echo -xtarget=pentium4           ;;
3822                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3823                     *-sse3)             echo -xarch=sse3                 ;;
3824                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3825                     bonnell)                   echo -xarch=ssse3         ;;
3826                     corei7|nehalem)            echo -xtarget=nehalem     ;;
3827                     westmere)                  echo -xtarget=westmere    ;;
3828                     silvermont)                echo -xarch=sse4_2        ;;
3829                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
3830                     core-avx*|ivybridge|haswell|broadwell|skylake*|knl)
3831                                                echo -xarch=avx           ;;
3832                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
3833                     btver1)                    echo -xarch=amdsse4a      ;;
3834                     btver2|bdver*|znver*)      echo -xarch=avx           ;;
3835                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3836                     k8|opteron|athlon64|athlon-fx)
3837                                                echo -xarch=sse2a         ;;
3838                     athlon*)                   echo -xarch=pentium_proa  ;;
3839                 esac
3840                 ;;
3841             -std=c99)             echo -xc99              ;;
3842             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3843             -fPIC)                echo -KPIC -xcode=pic32 ;;
3844             -W*,*)                echo $flag              ;;
3845             -f*-*|-W*|-mimpure-text)                      ;;
3846             -shared)              echo -G                 ;;
3847             *)                    echo $flag              ;;
3848         esac
3849     done
3850 }
3851
3852 tms470_flags(){
3853     for flag; do
3854         case $flag in
3855             -march=*|-mcpu=*)
3856                 case "${flag#*=}" in
3857                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3858                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3859                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3860                     armv6*|arm11*)          echo -mv=6   ;;
3861                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3862                                             echo -mv=5e  ;;
3863                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3864                 esac
3865                 ;;
3866             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3867             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3868             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3869             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3870             -msoft-float)   echo --float_support=vfplib       ;;
3871             -O[0-3]|-mf=*)  echo $flag                        ;;
3872             -g)             echo -g -mn                       ;;
3873             -pds=*)         echo $flag                        ;;
3874             -D*|-I*)        echo $flag                        ;;
3875             --gcc|--abi=*)  echo $flag                        ;;
3876             -me)            echo $flag                        ;;
3877         esac
3878     done
3879 }
3880
3881 probe_cc(){
3882     pfx=$1
3883     _cc=$2
3884     first=$3
3885
3886     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3887     unset _ld_o _ldflags _ld_lib _ld_path
3888     unset _depflags _DEPCMD _DEPFLAGS
3889     _flags_filter=echo
3890
3891     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
3892         true # no-op to avoid reading stdin in following checks
3893     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3894         _type=llvm_gcc
3895         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
3896         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
3897         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3898         _cflags_speed='-O3'
3899         _cflags_size='-Os'
3900     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3901         _type=gcc
3902         gcc_version=$($_cc --version | head -n1)
3903         gcc_basever=$($_cc -dumpversion)
3904         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3905         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3906         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3907         case $gcc_basever in
3908             2) ;;
3909             2.*) ;;
3910             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
3911         esac
3912         if [ "$first" = true ]; then
3913             case $gcc_basever in
3914                 4.2*)
3915                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
3916             esac
3917         fi
3918         _cflags_speed='-O3'
3919         _cflags_size='-Os'
3920     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3921         _type=icc
3922         _ident=$($_cc --version | head -n1)
3923         _depflags='-MMD'
3924         _cflags_speed='-O3'
3925         _cflags_size='-Os'
3926         _cflags_noopt='-O1'
3927         _flags_filter=icc_flags
3928     elif $_cc -v 2>&1 | grep -q xlc; then
3929         _type=xlc
3930         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3931         _cflags_speed='-O5'
3932         _cflags_size='-O5 -qcompact'
3933     elif $_cc -V 2>/dev/null | grep -q Compaq; then
3934         _type=ccc
3935         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
3936         _DEPFLAGS='-M'
3937         _cflags_speed='-fast'
3938         _cflags_size='-O1'
3939         _flags_filter=ccc_flags
3940     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
3941         test -d "$sysroot" || die "No valid sysroot specified."
3942         _type=armcc
3943         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
3944         armcc_conf="$PWD/armcc.conf"
3945         $_cc --arm_linux_configure                 \
3946              --arm_linux_config_file="$armcc_conf" \
3947              --configure_sysroot="$sysroot"        \
3948              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
3949              die "Error creating armcc configuration file."
3950         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
3951         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
3952         as_default="${cross_prefix}gcc"
3953         _depflags='-MMD'
3954         _cflags_speed='-O3'
3955         _cflags_size='-Os'
3956     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
3957         _type=tms470
3958         _ident=$($_cc -version | head -n1 | tr -s ' ')
3959         _flags='--gcc --abi=eabi -me'
3960         _cc_e='-ppl -fe=$@'
3961         _cc_o='-fe=$@'
3962         _depflags='-ppa -ppd=$(@:.o=.d)'
3963         _cflags_speed='-O3 -mf=5'
3964         _cflags_size='-O3 -mf=2'
3965         _flags_filter=tms470_flags
3966     elif $_cc -v 2>&1 | grep -q clang; then
3967         _type=clang
3968         _ident=$($_cc --version 2>/dev/null | head -n1)
3969         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3970         _cflags_speed='-O3'
3971         _cflags_size='-Os'
3972     elif $_cc -V 2>&1 | grep -q Sun; then
3973         _type=suncc
3974         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
3975         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3976         _DEPFLAGS='-xM1 -xc99'
3977         _ldflags='-std=c99'
3978         _cflags_speed='-O5'
3979         _cflags_size='-O5 -xspace'
3980         _flags_filter=suncc_flags
3981     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3982         _type=pathscale
3983         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3984         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3985         _cflags_speed='-O2'
3986         _cflags_size='-Os'
3987         _flags_filter='filter_out -Wdisabled-optimization'
3988     elif $_cc -v 2>&1 | grep -q Open64; then
3989         _type=open64
3990         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3991         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3992         _cflags_speed='-O2'
3993         _cflags_size='-Os'
3994         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3995     elif $_cc -V 2>&1 | grep -q Portland; then
3996         _type=pgi
3997         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
3998         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
3999         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
4000         _cflags_size="-O2 -Munroll=c:1 $opt_common"
4001         _cflags_noopt="-O"
4002         _flags_filter=pgi_flags
4003     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
4004         _type=armasm
4005         _ident=$($_cc | head -n1)
4006         # 4509: "This form of conditional instruction is deprecated"
4007         _flags="-nologo -ignore 4509"
4008         _flags_filter=armasm_flags
4009     elif $_cc 2>&1 | grep -q Intel; then
4010         _type=icl
4011         _ident=$($_cc 2>&1 | head -n1)
4012         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
4013         # Not only is O3 broken on 13.x+ but it is slower on all previous
4014         # versions (tested) as well.
4015         _cflags_speed="-O2"
4016         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
4017         if $_cc 2>&1 | grep -q Linker; then
4018             _ld_o='-out:$@'
4019         else
4020             _ld_o='-Fe$@'
4021         fi
4022         _cc_o='-Fo$@'
4023         _cc_e='-P'
4024         _flags_filter=icl_flags
4025         _ld_lib='lib%.a'
4026         _ld_path='-libpath:'
4027         # -Qdiag-error to make icl error when seeing certain unknown arguments
4028         _flags='-nologo -Qdiag-error:4044,10157'
4029         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
4030         # with MSVC which enables it by default.
4031         _cflags='-D_USE_MATH_DEFINES -Qms0 -Qvec- -Qsimd- -GS -fp:precise'
4032         disable stripping
4033     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
4034         _type=msvc
4035         _ident=$($_cc 2>&1 | head -n1)
4036         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
4037         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
4038         _cflags_speed="-O2"
4039         _cflags_size="-O1"
4040         if $_cc -nologo- 2>&1 | grep -q Linker; then
4041             _ld_o='-out:$@'
4042         else
4043             _ld_o='-Fe$@'
4044         fi
4045         _cc_o='-Fo$@'
4046         _cc_e='-P -Fi$@'
4047         _flags_filter=msvc_flags
4048         _ld_lib='lib%.a'
4049         _ld_path='-libpath:'
4050         _flags='-nologo'
4051         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS'
4052         disable stripping
4053     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
4054         _type=cparser
4055         _ident=$($_cc --version | head -n1)
4056         _depflags='-MMD'
4057         _cflags_speed='-O4'
4058         _cflags_size='-O2'
4059         _flags_filter=cparser_flags
4060     fi
4061
4062     eval ${pfx}_type=\$_type
4063     eval ${pfx}_ident=\$_ident
4064 }
4065
4066 set_ccvars(){
4067     eval ${1}_C=\${_cc_c-\${${1}_C}}
4068     eval ${1}_E=\${_cc_e-\${${1}_E}}
4069     eval ${1}_O=\${_cc_o-\${${1}_O}}
4070
4071     if [ -n "$_depflags" ]; then
4072         eval ${1}_DEPFLAGS=\$_depflags
4073     else
4074         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
4075         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
4076         eval DEP${1}FLAGS=\$_flags
4077     fi
4078 }
4079
4080 probe_cc cc "$cc" "true"
4081 cflags_filter=$_flags_filter
4082 cflags_speed=$_cflags_speed
4083 cflags_size=$_cflags_size
4084 cflags_noopt=$_cflags_noopt
4085 add_cflags $_flags $_cflags
4086 cc_ldflags=$_ldflags
4087 set_ccvars CC
4088
4089 probe_cc hostcc "$host_cc"
4090 host_cflags_filter=$_flags_filter
4091 add_host_cflags  $_flags $_cflags
4092 set_ccvars HOSTCC
4093
4094 test -n "$cc_type" && enable $cc_type ||
4095     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4096
4097 : ${as_default:=$cc}
4098 : ${objcc_default:=$cc}
4099 : ${dep_cc_default:=$cc}
4100 : ${ld_default:=$cc}
4101 : ${host_ld_default:=$host_cc}
4102 set_default ar as objcc dep_cc ld ln_s host_ld windres
4103
4104 probe_cc as "$as"
4105 asflags_filter=$_flags_filter
4106 add_asflags $_flags $_cflags
4107 set_ccvars AS
4108
4109 probe_cc objcc "$objcc"
4110 objcflags_filter=$_flags_filter
4111 add_objcflags $_flags $_cflags
4112 set_ccvars OBJC
4113
4114 probe_cc ld "$ld"
4115 ldflags_filter=$_flags_filter
4116 add_ldflags $_flags $_ldflags
4117 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4118 LD_O=${_ld_o-$LD_O}
4119 LD_LIB=${_ld_lib-$LD_LIB}
4120 LD_PATH=${_ld_path-$LD_PATH}
4121
4122 probe_cc hostld "$host_ld"
4123 host_ldflags_filter=$_flags_filter
4124 add_host_ldflags $_flags $_ldflags
4125 HOSTLD_O=${_ld_o-$HOSTLD_O}
4126
4127 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4128     probe_cc depcc "$dep_cc"
4129     CCDEP=${_DEPCMD:-$DEPCMD}
4130     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4131     DEPCCFLAGS=$_flags
4132 fi
4133
4134 if $ar 2>&1 | grep -q Microsoft; then
4135     arflags="-nologo"
4136     ar_o='-out:$@'
4137 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
4138     arflags="rq"
4139     ar_o='$@'
4140 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
4141     arflags='-Xany -r -c'
4142     ar_o='$@'
4143 elif $ar 2>&1 | grep -q "\[D\] "; then
4144     arflags="rcD"
4145     ar_o='$@'
4146 else
4147     arflags="rc"
4148     ar_o='$@'
4149 fi
4150
4151 add_cflags $extra_cflags
4152 add_cxxflags $extra_cxxflags
4153 add_objcflags $extra_objcflags
4154 add_asflags $extra_cflags
4155
4156 if test -n "$sysroot"; then
4157     case "$cc_type" in
4158         gcc|llvm_gcc|clang)
4159             add_cppflags --sysroot="$sysroot"
4160             add_ldflags --sysroot="$sysroot"
4161 # On Darwin --sysroot may be ignored, -isysroot always affects headers and linking
4162             add_cppflags -isysroot "$sysroot"
4163             add_ldflags -isysroot "$sysroot"
4164         ;;
4165         tms470)
4166             add_cppflags -I"$sysinclude"
4167             add_ldflags  --sysroot="$sysroot"
4168         ;;
4169     esac
4170 fi
4171
4172 if test "$cpu" = host; then
4173     enabled cross_compile &&
4174         die "--cpu=host makes no sense when cross-compiling."
4175
4176     case "$cc_type" in
4177         gcc|llvm_gcc)
4178             check_native(){
4179                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4180                 sed -n "/cc1.*$1=/{
4181                             s/.*$1=\\([^ ]*\\).*/\\1/
4182                             p
4183                             q
4184                         }" $TMPE
4185             }
4186             cpu=$(check_native -march || check_native -mcpu)
4187         ;;
4188         clang)
4189             check_native(){
4190                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4191                 sed -n "/cc1.*-target-cpu /{
4192                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4193                             p
4194                             q
4195                         }" $TMPE
4196             }
4197             cpu=$(check_native -march)
4198         ;;
4199     esac
4200
4201     test "${cpu:-host}" = host &&
4202         die "--cpu=host not supported with compiler $cc"
4203 fi
4204
4205 # Deal with common $arch aliases
4206 case "$arch" in
4207     aarch64|arm64)
4208         arch="aarch64"
4209     ;;
4210     arm*|iPad*|iPhone*)
4211         arch="arm"
4212     ;;
4213     mips*|IP*)
4214         case "$arch" in
4215         *el)
4216             add_cppflags -EL
4217             add_ldflags -EL
4218         ;;
4219         *eb)
4220             add_cppflags -EB
4221             add_ldflags -EB
4222         ;;
4223         esac
4224         arch="mips"
4225     ;;
4226     parisc*|hppa*)
4227         arch="parisc"
4228     ;;
4229     "Power Macintosh"|ppc*|powerpc*)
4230         arch="ppc"
4231     ;;
4232     s390|s390x)
4233         arch="s390"
4234     ;;
4235     sh4|sh)
4236         arch="sh4"
4237     ;;
4238     sun4*|sparc*)
4239         arch="sparc"
4240     ;;
4241     tilegx|tile-gx)
4242         arch="tilegx"
4243     ;;
4244     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4245         arch="x86"
4246     ;;
4247 esac
4248
4249 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4250 enable $arch
4251
4252 # Add processor-specific flags
4253 if enabled aarch64; then
4254
4255     case $cpu in
4256         armv*)
4257             cpuflags="-march=$cpu"
4258         ;;
4259         *)
4260             cpuflags="-mcpu=$cpu"
4261         ;;
4262     esac
4263
4264 elif enabled alpha; then
4265
4266     cpuflags="-mcpu=$cpu"
4267
4268 elif enabled arm; then
4269
4270     check_arm_arch() {
4271         check_cpp_condition stddef.h \
4272             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4273             $cpuflags
4274     }
4275
4276     probe_arm_arch() {
4277         if   check_arm_arch 4;        then echo armv4
4278         elif check_arm_arch 4T;       then echo armv4t
4279         elif check_arm_arch 5;        then echo armv5
4280         elif check_arm_arch 5E;       then echo armv5e
4281         elif check_arm_arch 5T;       then echo armv5t
4282         elif check_arm_arch 5TE;      then echo armv5te
4283         elif check_arm_arch 5TEJ;     then echo armv5te
4284         elif check_arm_arch 6;        then echo armv6
4285         elif check_arm_arch 6J;       then echo armv6j
4286         elif check_arm_arch 6K;       then echo armv6k
4287         elif check_arm_arch 6Z;       then echo armv6z
4288         elif check_arm_arch 6ZK;      then echo armv6zk
4289         elif check_arm_arch 6T2;      then echo armv6t2
4290         elif check_arm_arch 7;        then echo armv7
4291         elif check_arm_arch 7A  7_A;  then echo armv7-a
4292         elif check_arm_arch 7S;       then echo armv7-a
4293         elif check_arm_arch 7R  7_R;  then echo armv7-r
4294         elif check_arm_arch 7M  7_M;  then echo armv7-m
4295         elif check_arm_arch 7EM 7E_M; then echo armv7-m
4296         elif check_arm_arch 8A  8_A;  then echo armv8-a
4297         fi
4298     }
4299
4300     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4301
4302     case $cpu in
4303         armv*)
4304             cpuflags="-march=$cpu"
4305             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4306         ;;
4307         *)
4308             cpuflags="-mcpu=$cpu"
4309             case $cpu in
4310                 cortex-a*)                               subarch=armv7a  ;;
4311                 cortex-r*)                               subarch=armv7r  ;;
4312                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4313                 arm11*)                                  subarch=armv6   ;;
4314                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4315                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4316                 *)                             subarch=$(probe_arm_arch) ;;
4317             esac
4318         ;;
4319     esac
4320
4321     case "$subarch" in
4322         armv5t*)    enable fast_clz                ;;
4323         armv[6-8]*)
4324             enable fast_clz
4325             disabled fast_unaligned || enable fast_unaligned
4326             ;;
4327     esac
4328
4329 elif enabled avr32; then
4330
4331     case $cpu in
4332         ap7[02]0[0-2])
4333             subarch="avr32_ap"
4334             cpuflags="-mpart=$cpu"
4335         ;;
4336         ap)
4337             subarch="avr32_ap"
4338             cpuflags="-march=$cpu"
4339         ;;
4340         uc3[ab]*)
4341             subarch="avr32_uc"
4342             cpuflags="-mcpu=$cpu"
4343         ;;
4344         uc)
4345             subarch="avr32_uc"
4346             cpuflags="-march=$cpu"
4347         ;;
4348     esac
4349
4350 elif enabled bfin; then
4351
4352     cpuflags="-mcpu=$cpu"
4353
4354 elif enabled mips; then
4355
4356     cpuflags="-march=$cpu"
4357
4358     if [ "$cpu" != "generic" ]; then
4359         disable mips32r2
4360         disable mips32r5
4361         disable mips64r2
4362         disable mips32r6
4363         disable mips64r6
4364         disable loongson2
4365         disable loongson3
4366
4367         case $cpu in
4368             24kc|24kf*|24kec|34kc|1004kc|24kef*|34kf*|1004kf*|74kc|74kf)
4369                 enable mips32r2
4370                 disable msa
4371             ;;
4372             p5600|i6400|p6600)
4373                 disable mipsdsp
4374                 disable mipsdspr2
4375             ;;
4376             loongson*)
4377                 enable loongson2
4378                 enable loongson3
4379                 enable local_aligned_8 local_aligned_16 local_aligned_32
4380                 enable simd_align_16
4381                 enable fast_64bit
4382                 enable fast_clz
4383                 enable fast_cmov
4384                 enable fast_unaligned
4385                 disable aligned_stack
4386                 case $cpu in
4387                     loongson3*)
4388                         cpuflags="-march=loongson3a -mhard-float -fno-expensive-optimizations"
4389                     ;;
4390                     loongson2e)
4391                         cpuflags="-march=loongson2e -mhard-float -fno-expensive-optimizations"
4392                     ;;
4393                     loongson2f)
4394                         cpuflags="-march=loongson2f -mhard-float -fno-expensive-optimizations"
4395                     ;;
4396                 esac
4397             ;;
4398             *)
4399                 # Unknown CPU. Disable everything.
4400                 warn "unknown CPU. Disabling all MIPS optimizations."
4401                 disable mipsfpu
4402                 disable mipsdsp
4403                 disable mipsdspr2
4404                 disable msa
4405                 disable mmi
4406             ;;
4407         esac
4408
4409         case $cpu in
4410             24kc)
4411                 disable mipsfpu
4412                 disable mipsdsp
4413                 disable mipsdspr2
4414             ;;
4415             24kf*)
4416                 disable mipsdsp
4417                 disable mipsdspr2
4418             ;;
4419             24kec|34kc|1004kc)
4420                 disable mipsfpu
4421                 disable mipsdspr2
4422             ;;
4423             24kef*|34kf*|1004kf*)
4424                 disable mipsdspr2
4425             ;;
4426             74kc)
4427                 disable mipsfpu
4428             ;;
4429             p5600)
4430                 enable mips32r5
4431                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
4432             ;;
4433             i6400)
4434                 enable mips64r6
4435                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4436             ;;
4437             p6600)
4438                 enable mips64r6
4439                 check_cflags "-mtune=p6600 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4440             ;;
4441         esac
4442     else
4443         # We do not disable anything. Is up to the user to disable the unwanted features.
4444         warn 'generic cpu selected'
4445     fi
4446
4447 elif enabled ppc; then
4448
4449     disable ldbrx
4450
4451     case $(tolower $cpu) in
4452         601|ppc601|powerpc601)
4453             cpuflags="-mcpu=601"
4454             disable altivec
4455         ;;
4456         603*|ppc603*|powerpc603*)
4457             cpuflags="-mcpu=603"
4458             disable altivec
4459         ;;
4460         604*|ppc604*|powerpc604*)
4461             cpuflags="-mcpu=604"
4462             disable altivec
4463         ;;
4464         g3|75*|ppc75*|powerpc75*)
4465             cpuflags="-mcpu=750"
4466             disable altivec
4467         ;;
4468         g4|745*|ppc745*|powerpc745*)
4469             cpuflags="-mcpu=7450"
4470             disable vsx
4471         ;;
4472         74*|ppc74*|powerpc74*)
4473             cpuflags="-mcpu=7400"
4474             disable vsx
4475         ;;
4476         g5|970|ppc970|powerpc970)
4477             cpuflags="-mcpu=970"
4478             disable vsx
4479         ;;
4480         power[3-6]*)
4481             cpuflags="-mcpu=$cpu"
4482             disable vsx
4483         ;;
4484         power[7-8]*)
4485             cpuflags="-mcpu=$cpu"
4486         ;;
4487         cell)
4488             cpuflags="-mcpu=cell"
4489             enable ldbrx
4490             disable vsx
4491         ;;
4492         e500mc)
4493             cpuflags="-mcpu=e500mc"
4494             disable altivec
4495         ;;
4496         e500v2)
4497             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
4498             disable altivec
4499             disable dcbzl
4500         ;;
4501         e500)
4502             cpuflags="-mcpu=8540 -mhard-float"
4503             disable altivec
4504             disable dcbzl
4505         ;;
4506     esac
4507
4508 elif enabled sparc; then
4509
4510     case $cpu in
4511         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
4512             cpuflags="-mcpu=$cpu"
4513         ;;
4514         ultrasparc*|niagara[234])
4515             cpuflags="-mcpu=$cpu"
4516         ;;
4517     esac
4518
4519 elif enabled x86; then
4520
4521     case $cpu in
4522         i[345]86|pentium)
4523             cpuflags="-march=$cpu"
4524             disable i686
4525             disable mmx
4526         ;;
4527         # targets that do NOT support nopl and conditional mov (cmov)
4528         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
4529             cpuflags="-march=$cpu"
4530             disable i686
4531         ;;
4532         # targets that do support nopl and conditional mov (cmov)
4533         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
4534         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|skylake*|knl\
4535         |amdfam10|barcelona|b[dt]ver*|znver*)
4536             cpuflags="-march=$cpu"
4537             enable i686
4538             enable fast_cmov
4539         ;;
4540         # targets that do support conditional mov but on which it's slow
4541         pentium4|pentium4m|prescott|nocona)
4542             cpuflags="-march=$cpu"
4543             enable i686
4544             disable fast_cmov
4545         ;;
4546     esac
4547
4548 fi
4549
4550 if [ "$cpu" != generic ]; then
4551     add_cflags  $cpuflags
4552     add_asflags $cpuflags
4553     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
4554 fi
4555
4556 # compiler sanity check
4557 check_exec <<EOF
4558 int main(void){ return 0; }
4559 EOF
4560 if test "$?" != 0; then
4561     echo "$cc is unable to create an executable file."
4562     if test -z "$cross_prefix" && ! enabled cross_compile ; then
4563         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
4564         echo "Only do this if you know what cross compiling means."
4565     fi
4566     die "C compiler test failed."
4567 fi
4568
4569 add_cppflags -D_ISOC99_SOURCE
4570 add_cxxflags -D__STDC_CONSTANT_MACROS
4571 add_cxxflags -std=c++98
4572 check_cflags -std=c99
4573 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
4574 #include <stdlib.h>
4575 EOF
4576 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
4577 #include <stdlib.h>
4578 EOF
4579
4580 add_host_cppflags -D_ISOC99_SOURCE
4581 check_host_cflags -std=c99
4582 check_host_cflags -Wall
4583 check_host_cflags -O3
4584
4585 check_64bit(){
4586     arch32=$1
4587     arch64=$2
4588     expr=$3
4589     check_code cc "" "int test[2*($expr) - 1]" &&
4590         subarch=$arch64 || subarch=$arch32
4591 }
4592
4593 case "$arch" in
4594     aarch64|alpha|ia64)
4595         spic=$shared
4596     ;;
4597     mips)
4598         check_64bit mips mips64 '_MIPS_SIM > 1'
4599         spic=$shared
4600     ;;
4601     parisc)
4602         check_64bit parisc parisc64 'sizeof(void *) > 4'
4603         spic=$shared
4604     ;;
4605     ppc)
4606         check_64bit ppc ppc64 'sizeof(void *) > 4'
4607         spic=$shared
4608     ;;
4609     s390)
4610         check_64bit s390 s390x 'sizeof(void *) > 4'
4611         spic=$shared
4612     ;;
4613     sparc)
4614         check_64bit sparc sparc64 'sizeof(void *) > 4'
4615         spic=$shared
4616     ;;
4617     x86)
4618         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
4619         # Treat x32 as x64 for now. Note it also needs spic=$shared
4620         test "$subarch" = "x86_32" && check_cpp_condition stddef.h 'defined(__x86_64__)' &&
4621             subarch=x86_64
4622         if test "$subarch" = "x86_64"; then
4623             spic=$shared
4624         fi
4625     ;;
4626     ppc)
4627         check_cc <<EOF && subarch="ppc64"
4628         int test[(int)sizeof(char*) - 7];
4629 EOF
4630     ;;
4631 esac
4632
4633 enable $subarch
4634 enabled spic && enable_weak pic
4635
4636 # OS specific
4637 case $target_os in
4638     aix)
4639         SHFLAGS=-shared
4640         add_cppflags '-I\$(SRC_PATH)/compat/aix'
4641         enabled shared && add_ldflags -Wl,-brtl
4642         ;;
4643     android)
4644         disable symver
4645         enable section_data_rel_ro
4646         SLIB_INSTALL_NAME='$(SLIBNAME)'
4647         SLIB_INSTALL_LINKS=
4648         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
4649         ;;
4650     haiku)
4651         prefix_default="/boot/common"
4652         network_extralibs="-lnetwork"
4653         host_libs=
4654         ;;
4655     sunos)
4656         SHFLAGS='-shared -Wl,-h,$$(@F)'
4657         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
4658         network_extralibs="-lsocket -lnsl"
4659         add_cppflags -D__EXTENSIONS__
4660         # When using suncc to build, the Solaris linker will mark
4661         # an executable with each instruction set encountered by
4662         # the Solaris assembler.  As our libraries contain their own
4663         # guards for processor-specific code, instead suppress
4664         # generation of the HWCAPS ELF section on Solaris x86 only.
4665         enabled_all suncc x86 &&
4666             echo "hwcap_1 = OVERRIDE;" > mapfile &&
4667             add_ldflags -Wl,-M,mapfile
4668         nm_default='nm -P -g'
4669         version_script='-M'
4670         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
4671         ;;
4672     netbsd)
4673         disable symver
4674         oss_indev_extralibs="-lossaudio"
4675         oss_outdev_extralibs="-lossaudio"
4676         enabled gcc || check_ldflags -Wl,-zmuldefs
4677         ;;
4678     openbsd|bitrig)
4679         disable symver
4680         SHFLAGS='-shared'
4681         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
4682         SLIB_INSTALL_LINKS=
4683         oss_indev_extralibs="-lossaudio"
4684         oss_outdev_extralibs="-lossaudio"
4685         ;;
4686     dragonfly)
4687         disable symver
4688         ;;
4689     freebsd)
4690         ;;
4691     bsd/os)
4692         add_extralibs -lpoll -lgnugetopt
4693         strip="strip -d"
4694         ;;
4695     darwin)
4696         enabled ppc && add_asflags -force_cpusubtype_ALL
4697         install_name_dir_default='$(SHLIBDIR)'
4698         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(INSTALL_NAME_DIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
4699         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
4700         strip="${strip} -x"
4701         add_ldflags -Wl,-dynamic,-search_paths_first
4702         SLIBSUF=".dylib"
4703         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
4704         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
4705         objformat="macho"
4706         enabled x86_64 && objformat="macho64"
4707         enabled_any pic shared x86_64 ||
4708             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
4709         check_header dispatch/dispatch.h &&
4710             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
4711         ;;
4712     msys*)
4713         die "Native MSYS builds are discouraged, please use the MINGW environment."
4714         ;;
4715     mingw32*|mingw64*)
4716         if test $target_os = "mingw32ce"; then
4717             disable network
4718         else
4719             target_os=mingw32
4720         fi
4721         decklink_outdev_extralibs="$decklink_outdev_extralibs -lole32 -loleaut32"
4722         decklink_indev_extralibs="$decklink_indev_extralibs -lole32 -loleaut32"
4723         LIBTARGET=i386
4724         if enabled x86_64; then
4725             LIBTARGET="i386:x86-64"
4726         elif enabled arm; then
4727             LIBTARGET=arm-wince
4728         fi
4729         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4730         enabled x86_32 && check_ldflags -Wl,--large-address-aware
4731         shlibdir_default="$bindir_default"
4732         SLIBPREF=""
4733         SLIBSUF=".dll"
4734         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4735         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4736         dlltool="${cross_prefix}dlltool"
4737         if check_cmd lib.exe -list; then
4738             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe /machine:$(LIBTARGET) /def:$$(@:$(SLIBSUF)=.def) /out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4739             if enabled x86_64; then
4740                 LIBTARGET=x64
4741             fi
4742         elif check_cmd $dlltool --version; then
4743             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
4744         fi
4745         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4746         SLIB_INSTALL_LINKS=
4747         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4748         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4749         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--disable-auto-image-base'
4750         objformat="win32"
4751         ranlib=:
4752         enable dos_paths
4753         check_ldflags -Wl,--nxcompat,--dynamicbase
4754         # Lets work around some stupidity in binutils.
4755         # ld will strip relocations from executables even though we need them
4756         # for dynamicbase (ASLR).  Using -pie does retain the reloc section
4757         # however ld then forgets what the entry point should be (oops) so we
4758         # have to manually (re)set it.
4759         if enabled x86_32; then
4760             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,_mainCRTStartup
4761         elif enabled x86_64; then
4762             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,mainCRTStartup
4763             check_ldflags -Wl,--high-entropy-va # binutils 2.25
4764             # Set image base >4GB for extra entropy with HEASLR
4765             add_ldexeflags -Wl,--image-base,0x140000000
4766             append SHFLAGS -Wl,--image-base,0x180000000
4767         fi
4768         ;;
4769     win32|win64)
4770         disable symver
4771         if enabled shared; then
4772             # Link to the import library instead of the normal static library
4773             # for shared libs.
4774             LD_LIB='%.lib'
4775             # Cannot build both shared and static libs with MSVC or icl.
4776             disable static
4777         fi
4778         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
4779         shlibdir_default="$bindir_default"
4780         SLIBPREF=""
4781         SLIBSUF=".dll"
4782         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4783         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4784         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
4785         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4786         SLIB_INSTALL_LINKS=
4787         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4788         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4789         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4790         objformat="win32"
4791         ranlib=:
4792         enable dos_paths
4793         ;;
4794     cygwin*)
4795         target_os=cygwin
4796         shlibdir_default="$bindir_default"
4797         SLIBPREF="cyg"
4798         SLIBSUF=".dll"
4799         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4800         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4801         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4802         SLIB_INSTALL_LINKS=
4803         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
4804         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
4805         objformat="win32"
4806         enable dos_paths
4807         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4808         ;;
4809     *-dos|freedos|opendos)
4810         network_extralibs="-lsocket"
4811         objformat="coff"
4812         enable dos_paths
4813         add_cppflags -U__STRICT_ANSI__
4814         ;;
4815     linux)
4816         enable dv1394
4817         enable section_data_rel_ro
4818         ;;
4819     irix*)
4820         target_os=irix
4821         ranlib="echo ignoring ranlib"
4822         ;;
4823     os/2*)
4824         strip="lxlite -CS"
4825         objformat="aout"
4826         add_cppflags -D_GNU_SOURCE
4827         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
4828         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
4829         LIBSUF="_s.a"
4830         SLIBPREF=""
4831         SLIBSUF=".dll"
4832         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4833         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(FULLNAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
4834         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(FULLNAME).def; \
4835             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(FULLNAME).def; \
4836             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(FULLNAME).def; \
4837             echo EXPORTS >> $(SUBDIR)$(FULLNAME).def; \
4838             emxexp $(OBJS) >> $(SUBDIR)$(FULLNAME).def'
4839         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.a $(SUBDIR)$(FULLNAME).def; \
4840             emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.lib $(SUBDIR)$(FULLNAME).def;'
4841         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4842         SLIB_INSTALL_LINKS=
4843         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(FULLNAME)_dll.a $(LIBPREF)$(FULLNAME)_dll.lib'
4844         enable dos_paths
4845         enable_weak os2threads
4846         ;;
4847     gnu/kfreebsd)
4848         add_cppflags -D_BSD_SOURCE
4849         ;;
4850     gnu)
4851         ;;
4852     qnx)
4853         add_cppflags -D_QNX_SOURCE
4854         network_extralibs="-lsocket"
4855         ;;
4856     symbian)
4857         SLIBSUF=".dll"
4858         enable dos_paths
4859         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
4860         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
4861         add_ldflags -Wl,--target1-abs,--no-undefined \
4862                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
4863                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
4864         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
4865                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
4866                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
4867         ;;
4868     osf1)
4869         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
4870         ;;
4871     minix)
4872         ;;
4873     plan9)
4874         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
4875                      -D_REENTRANT_SOURCE        \
4876                      -D_RESEARCH_SOURCE         \
4877                      -DFD_SETSIZE=96            \
4878                      -DHAVE_SOCK_OPTS
4879         add_compat strtod.o strtod=avpriv_strtod
4880         network_extralibs='-lbsd'
4881       &n