avutil/libm: correct isnan, isinf compat hacks
[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
95 Licensing options:
96   --enable-gpl             allow use of GPL code, the resulting libs
97                            and binaries will be under GPL [no]
98   --enable-version3        upgrade (L)GPL to version 3 [no]
99   --enable-nonfree         allow use of nonfree code, the resulting libs
100                            and binaries will be unredistributable [no]
101
102 Configuration options:
103   --disable-static         do not build static libraries [no]
104   --enable-shared          build shared libraries [no]
105   --enable-small           optimize for size instead of speed
106   --disable-runtime-cpudetect disable detecting cpu capabilities at runtime (smaller binary)
107   --enable-gray            enable full grayscale support (slower color)
108   --disable-swscale-alpha  disable alpha channel support in swscale
109   --disable-all            disable building components, libraries and programs
110   --enable-incompatible-libav-abi enable incompatible Libav fork ABI [no]
111   --enable-raise-major     increase major version numbers in sonames [no]
112
113 Program options:
114   --disable-programs       do not build command line programs
115   --disable-ffmpeg         disable ffmpeg build
116   --disable-ffplay         disable ffplay build
117   --disable-ffprobe        disable ffprobe build
118   --disable-ffserver       disable ffserver build
119
120 Documentation options:
121   --disable-doc            do not build documentation
122   --disable-htmlpages      do not build HTML documentation pages
123   --disable-manpages       do not build man documentation pages
124   --disable-podpages       do not build POD documentation pages
125   --disable-txtpages       do not build text documentation pages
126
127 Component options:
128   --disable-avdevice       disable libavdevice build
129   --disable-avcodec        disable libavcodec build
130   --disable-avformat       disable libavformat build
131   --disable-swresample     disable libswresample build
132   --disable-swscale        disable libswscale build
133   --disable-postproc       disable libpostproc build
134   --disable-avfilter       disable libavfilter build
135   --enable-avresample      enable libavresample build [no]
136   --disable-pthreads       disable pthreads [autodetect]
137   --disable-w32threads     disable Win32 threads [autodetect]
138   --disable-os2threads     disable OS/2 threads [autodetect]
139   --disable-network        disable network support [no]
140   --disable-dct            disable DCT code
141   --disable-dwt            disable DWT code
142   --disable-error-resilience disable error resilience code
143   --disable-lsp            disable LSP code
144   --disable-lzo            disable LZO decoder code
145   --disable-mdct           disable MDCT code
146   --disable-rdft           disable RDFT code
147   --disable-fft            disable FFT code
148   --disable-faan           disable floating point AAN (I)DCT code
149   --disable-pixelutils     disable pixel utils in libavutil
150
151 Hardware accelerators:
152   --disable-d3d11va        disable D3D11VA code [autodetect]
153   --disable-dxva2          disable DXVA2 code [autodetect]
154   --disable-vaapi          disable VAAPI code [autodetect]
155   --disable-vda            disable VDA code [autodetect]
156   --disable-vdpau          disable VDPAU code [autodetect]
157   --enable-videotoolbox    enable VideoToolbox code [autodetect]
158
159 Individual component options:
160   --disable-everything     disable all components listed below
161   --disable-encoder=NAME   disable encoder NAME
162   --enable-encoder=NAME    enable encoder NAME
163   --disable-encoders       disable all encoders
164   --disable-decoder=NAME   disable decoder NAME
165   --enable-decoder=NAME    enable decoder NAME
166   --disable-decoders       disable all decoders
167   --disable-hwaccel=NAME   disable hwaccel NAME
168   --enable-hwaccel=NAME    enable hwaccel NAME
169   --disable-hwaccels       disable all hwaccels
170   --disable-muxer=NAME     disable muxer NAME
171   --enable-muxer=NAME      enable muxer NAME
172   --disable-muxers         disable all muxers
173   --disable-demuxer=NAME   disable demuxer NAME
174   --enable-demuxer=NAME    enable demuxer NAME
175   --disable-demuxers       disable all demuxers
176   --enable-parser=NAME     enable parser NAME
177   --disable-parser=NAME    disable parser NAME
178   --disable-parsers        disable all parsers
179   --enable-bsf=NAME        enable bitstream filter NAME
180   --disable-bsf=NAME       disable bitstream filter NAME
181   --disable-bsfs           disable all bitstream filters
182   --enable-protocol=NAME   enable protocol NAME
183   --disable-protocol=NAME  disable protocol NAME
184   --disable-protocols      disable all protocols
185   --enable-indev=NAME      enable input device NAME
186   --disable-indev=NAME     disable input device NAME
187   --disable-indevs         disable input devices
188   --enable-outdev=NAME     enable output device NAME
189   --disable-outdev=NAME    disable output device NAME
190   --disable-outdevs        disable output devices
191   --disable-devices        disable all devices
192   --enable-filter=NAME     enable filter NAME
193   --disable-filter=NAME    disable filter NAME
194   --disable-filters        disable all filters
195
196 External library support:
197   --enable-avisynth        enable reading of AviSynth script files [no]
198   --disable-bzlib          disable bzlib [autodetect]
199   --enable-chromaprint     enable audio fingerprinting with chromaprint [no]
200   --enable-fontconfig      enable fontconfig, useful for drawtext filter [no]
201   --enable-frei0r          enable frei0r video filtering [no]
202   --enable-gnutls          enable gnutls, needed for https support
203                            if openssl is not used [no]
204   --disable-iconv          disable iconv [autodetect]
205   --enable-ladspa          enable LADSPA audio filtering [no]
206   --enable-libaacplus      enable AAC+ encoding via libaacplus [no]
207   --enable-libass          enable libass subtitles rendering,
208                            needed for subtitles and ass filter [no]
209   --enable-libbluray       enable BluRay reading using libbluray [no]
210   --enable-libbs2b         enable bs2b DSP library [no]
211   --enable-libcaca         enable textual display using libcaca [no]
212   --enable-libcelt         enable CELT decoding via libcelt [no]
213   --enable-libcdio         enable audio CD grabbing with libcdio [no]
214   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
215                            and libraw1394 [no]
216   --enable-libdcadec       enable DCA decoding via libdcadec [no]
217   --enable-libfaac         enable AAC encoding via libfaac [no]
218   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
219   --enable-libflite        enable flite (voice synthesis) support via libflite [no]
220   --enable-libfreetype     enable libfreetype, needed for drawtext filter [no]
221   --enable-libfribidi      enable libfribidi, improves drawtext filter [no]
222   --enable-libgme          enable Game Music Emu via libgme [no]
223   --enable-libgsm          enable GSM de/encoding via libgsm [no]
224   --enable-libiec61883     enable iec61883 via libiec61883 [no]
225   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
226   --enable-libkvazaar      enable HEVC encoding via libkvazaar [no]
227   --enable-libmfx          enable HW acceleration through libmfx
228   --enable-libmodplug      enable ModPlug via libmodplug [no]
229   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
230   --enable-libnut          enable NUT (de)muxing via libnut,
231                            native (de)muxer exists [no]
232   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
233   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
234   --enable-libopencv       enable video filtering via libopencv [no]
235   --enable-libopenh264     enable H.264 encoding via OpenH264 [no]
236   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
237   --enable-libopus         enable Opus de/encoding via libopus [no]
238   --enable-libpulse        enable Pulseaudio input via libpulse [no]
239   --enable-librubberband   enable rubberband needed for rubberband filter [no]
240   --enable-libquvi         enable quvi input via libquvi [no]
241   --enable-librtmp         enable RTMP[E] support via librtmp [no]
242   --enable-libschroedinger enable Dirac de/encoding via libschroedinger [no]
243   --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
244   --enable-libsmbclient    enable Samba protocol via libsmbclient [no]
245   --enable-libsnappy       enable Snappy compression, needed for hap encoding [no]
246   --enable-libsoxr         enable Include libsoxr resampling [no]
247   --enable-libspeex        enable Speex de/encoding via libspeex [no]
248   --enable-libssh          enable SFTP protocol via libssh [no]
249   --enable-libstagefright-h264  enable H.264 decoding via libstagefright [no]
250   --enable-libtesseract    enable Tesseract, needed for ocr filter [no]
251   --enable-libtheora       enable Theora encoding via libtheora [no]
252   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
253   --enable-libutvideo      enable Ut Video encoding and decoding via libutvideo [no]
254   --enable-libv4l2         enable libv4l2/v4l-utils [no]
255   --enable-libvidstab      enable video stabilization using vid.stab [no]
256   --enable-libvo-aacenc    enable AAC encoding via libvo-aacenc [no]
257   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
258   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
259                            native implementation exists [no]
260   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
261   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
262   --enable-libwebp         enable WebP encoding via libwebp [no]
263   --enable-libx264         enable H.264 encoding via x264 [no]
264   --enable-libx265         enable HEVC encoding via x265 [no]
265   --enable-libxavs         enable AVS encoding via xavs [no]
266   --enable-libxcb          enable X11 grabbing using XCB [autodetect]
267   --enable-libxcb-shm      enable X11 grabbing shm communication [autodetect]
268   --enable-libxcb-xfixes   enable X11 grabbing mouse rendering [autodetect]
269   --enable-libxcb-shape    enable X11 grabbing shape rendering [autodetect]
270   --enable-libxvid         enable Xvid encoding via xvidcore,
271                            native MPEG-4/Xvid encoder exists [no]
272   --enable-libzimg         enable z.lib, needed for zscale filter [no]
273   --enable-libzmq          enable message passing via libzmq [no]
274   --enable-libzvbi         enable teletext support via libzvbi [no]
275   --disable-lzma           disable lzma [autodetect]
276   --enable-decklink        enable Blackmagick DeckLink I/O support [no]
277   --enable-mmal            enable decoding via MMAL [no]
278   --enable-nvenc           enable NVIDIA NVENC support [no]
279   --enable-openal          enable OpenAL 1.1 capture support [no]
280   --enable-opencl          enable OpenCL code
281   --enable-opengl          enable OpenGL rendering [no]
282   --enable-openssl         enable openssl, needed for https support
283                            if gnutls is not used [no]
284   --disable-schannel       disable SChannel SSP, needed for TLS support on
285                            Windows if openssl and gnutls are not used [autodetect]
286   --disable-sdl            disable sdl [autodetect]
287   --disable-securetransport disable Secure Transport, needed for TLS support
288                            on OSX if openssl and gnutls are not used [autodetect]
289   --enable-x11grab         enable X11 grabbing (legacy) [no]
290   --disable-xlib           disable xlib [autodetect]
291   --disable-zlib           disable zlib [autodetect]
292
293 Toolchain options:
294   --arch=ARCH              select architecture [$arch]
295   --cpu=CPU                select the minimum required CPU (affects
296                            instruction selection, may crash on older CPUs)
297   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
298   --progs-suffix=SUFFIX    program name suffix []
299   --enable-cross-compile   assume a cross-compiler is used
300   --sysroot=PATH           root of cross-build tree
301   --sysinclude=PATH        location of cross-build system headers
302   --target-os=OS           compiler targets OS [$target_os]
303   --target-exec=CMD        command to run executables on target
304   --target-path=DIR        path to view of build directory on target
305   --target-samples=DIR     path to samples directory on target
306   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
307   --toolchain=NAME         set tool defaults according to NAME
308   --nm=NM                  use nm tool NM [$nm_default]
309   --ar=AR                  use archive tool AR [$ar_default]
310   --as=AS                  use assembler AS [$as_default]
311   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
312   --yasmexe=EXE            use yasm-compatible assembler EXE [$yasmexe_default]
313   --cc=CC                  use C compiler CC [$cc_default]
314   --cxx=CXX                use C compiler CXX [$cxx_default]
315   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
316   --ld=LD                  use linker LD [$ld_default]
317   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
318   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
319   --ranlib=RANLIB          use ranlib RANLIB [$ranlib_default]
320   --doxygen=DOXYGEN        use DOXYGEN to generate API doc [$doxygen_default]
321   --host-cc=HOSTCC         use host C compiler HOSTCC
322   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
323   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
324   --host-ld=HOSTLD         use host linker HOSTLD
325   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
326   --host-libs=HLIBS        use libs HLIBS when linking for host
327   --host-os=OS             compiler host OS [$target_os]
328   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
329   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
330   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
331   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
332   --extra-ldlibflags=ELDFLAGS add ELDFLAGS to LDLIBFLAGS [$LDLIBFLAGS]
333   --extra-libs=ELIBS       add ELIBS [$ELIBS]
334   --extra-version=STRING   version string suffix []
335   --optflags=OPTFLAGS      override optimization-related compiler flags
336   --build-suffix=SUFFIX    library name suffix []
337   --enable-pic             build position-independent code
338   --enable-thumb           compile for Thumb instruction set
339   --enable-lto             use link-time optimization
340   --env="ENV=override"     override the environment variables
341
342 Advanced options (experts only):
343   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
344   --custom-allocator=NAME  use a supported custom allocator
345   --disable-symver         disable symbol versioning
346   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
347   --disable-safe-bitstream-reader
348                            disable buffer boundary checking in bitreaders
349                            (faster, but may crash)
350   --enable-memalign-hack   emulate memalign, interferes with memory debuggers
351   --sws-max-filter-size=N  the max filter size swscale uses [$sws_max_filter_size_default]
352
353 Optimization options (experts only):
354   --disable-asm            disable all assembly optimizations
355   --disable-altivec        disable AltiVec optimizations
356   --disable-vsx            disable VSX optimizations
357   --disable-power8         disable POWER8 optimizations
358   --disable-amd3dnow       disable 3DNow! optimizations
359   --disable-amd3dnowext    disable 3DNow! extended optimizations
360   --disable-mmx            disable MMX optimizations
361   --disable-mmxext         disable MMXEXT optimizations
362   --disable-sse            disable SSE optimizations
363   --disable-sse2           disable SSE2 optimizations
364   --disable-sse3           disable SSE3 optimizations
365   --disable-ssse3          disable SSSE3 optimizations
366   --disable-sse4           disable SSE4 optimizations
367   --disable-sse42          disable SSE4.2 optimizations
368   --disable-avx            disable AVX optimizations
369   --disable-xop            disable XOP optimizations
370   --disable-fma3           disable FMA3 optimizations
371   --disable-fma4           disable FMA4 optimizations
372   --disable-avx2           disable AVX2 optimizations
373   --disable-aesni          disable AESNI optimizations
374   --disable-armv5te        disable armv5te optimizations
375   --disable-armv6          disable armv6 optimizations
376   --disable-armv6t2        disable armv6t2 optimizations
377   --disable-vfp            disable VFP optimizations
378   --disable-neon           disable NEON optimizations
379   --disable-inline-asm     disable use of inline assembly
380   --disable-yasm           disable use of nasm/yasm assembly
381   --disable-mips32r5       disable MIPS32R5 optimizations
382   --disable-mips64r6       disable MIPS64R6 optimizations
383   --disable-mipsdspr1      disable MIPS DSP ASE R1 optimizations
384   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
385   --disable-msa            disable MSA optimizations
386   --disable-mipsfpu        disable floating point MIPS optimizations
387   --disable-mmi            disable Loongson SIMD optimizations
388   --disable-fast-unaligned consider unaligned accesses slow
389
390 Developer options (useful when working on FFmpeg itself):
391   --disable-debug          disable debugging symbols
392   --enable-debug=LEVEL     set the debug level [$debuglevel]
393   --disable-optimizations  disable compiler optimizations
394   --enable-extra-warnings  enable more compiler warnings
395   --disable-stripping      disable stripping of executables and shared libraries
396   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
397                            2 causes a slowdown at runtime.
398   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
399   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
400                            leaks and errors, using the specified valgrind binary.
401                            Cannot be combined with --target-exec
402   --enable-ftrapv          Trap arithmetic overflows
403   --samples=PATH           location of test samples for FATE, if not set use
404                            \$FATE_SAMPLES at make invocation time.
405   --enable-neon-clobber-test check NEON registers for clobbering (should be
406                            used only for debugging purposes)
407   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
408                            should be used only for debugging purposes)
409   --enable-random          randomly enable/disable components
410   --disable-random
411   --enable-random=LIST     randomly enable/disable specific components or
412   --disable-random=LIST    component groups. LIST is a comma-separated list
413                            of NAME[:PROB] entries where NAME is a component
414                            (group) and PROB the probability associated with
415                            NAME (default 0.5).
416   --random-seed=VALUE      seed value for --enable/disable-random
417   --disable-valgrind-backtrace do not print a backtrace under Valgrind
418                            (only applies to --disable-optimizations builds)
419
420 NOTE: Object files are built at the place where configure is launched.
421 EOF
422   exit 0
423 }
424
425 quotes='""'
426 if test -t 1 && which tput >/dev/null 2>&1; then
427     ncolors=$(tput colors)
428     if test -n "$ncolors" && test $ncolors -ge 8; then
429         bold_color=$(tput bold)
430         warn_color=$(tput setaf 3)
431         error_color=$(tput setaf 1)
432         reset_color=$(tput sgr0)
433     fi
434     # 72 used instead of 80 since that's the default of pr
435     ncols=$(tput cols)
436 fi
437 : ${ncols:=72}
438
439 log(){
440     echo "$@" >> $logfile
441 }
442
443 log_file(){
444     log BEGIN $1
445     pr -n -t $1 >> $logfile
446     log END $1
447 }
448
449 warn(){
450     log "WARNING: $*"
451     WARNINGS="${WARNINGS}WARNING: $*\n"
452 }
453
454 die(){
455     log "$@"
456     echo "$error_color$bold_color$@$reset_color"
457     cat <<EOF
458
459 If you think configure made a mistake, make sure you are using the latest
460 version from Git.  If the latest version fails, report the problem to the
461 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
462 EOF
463     if disabled logging; then
464         cat <<EOF
465 Rerun configure with logging enabled (do not use --disable-logging), and
466 include the log this produces with your report.
467 EOF
468     else
469         cat <<EOF
470 Include the log file "$logfile" produced by configure as this will help
471 solve the problem.
472 EOF
473     fi
474     exit 1
475 }
476
477 # Avoid locale weirdness, besides we really just want to translate ASCII.
478 toupper(){
479     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
480 }
481
482 tolower(){
483     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
484 }
485
486 c_escape(){
487     echo "$*" | sed 's/["\\]/\\\0/g'
488 }
489
490 sh_quote(){
491     v=$(echo "$1" | sed "s/'/'\\\\''/g")
492     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
493     echo "$v"
494 }
495
496 cleanws(){
497     echo "$@" | sed 's/^ *//;s/[[:space:]][[:space:]]*/ /g;s/ *$//'
498 }
499
500 filter(){
501     pat=$1
502     shift
503     for v; do
504         eval "case $v in $pat) echo $v ;; esac"
505     done
506 }
507
508 filter_out(){
509     pat=$1
510     shift
511     for v; do
512         eval "case $v in $pat) ;; *) echo $v ;; esac"
513     done
514 }
515
516 map(){
517     m=$1
518     shift
519     for v; do eval $m; done
520 }
521
522 add_suffix(){
523     suffix=$1
524     shift
525     for v; do echo ${v}${suffix}; done
526 }
527
528 set_all(){
529     value=$1
530     shift
531     for var in $*; do
532         eval $var=$value
533     done
534 }
535
536 set_weak(){
537     value=$1
538     shift
539     for var; do
540         eval : \${$var:=$value}
541     done
542 }
543
544 sanitize_var_name(){
545     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
546 }
547
548 set_safe(){
549     var=$1
550     shift
551     eval $(sanitize_var_name "$var")='$*'
552 }
553
554 get_safe(){
555     eval echo \$$(sanitize_var_name "$1")
556 }
557
558 pushvar(){
559     for pvar in $*; do
560         eval level=\${${pvar}_level:=0}
561         eval ${pvar}_${level}="\$$pvar"
562         eval ${pvar}_level=$(($level+1))
563     done
564 }
565
566 popvar(){
567     for pvar in $*; do
568         eval level=\${${pvar}_level:-0}
569         test $level = 0 && continue
570         eval level=$(($level-1))
571         eval $pvar="\${${pvar}_${level}}"
572         eval ${pvar}_level=$level
573         eval unset ${pvar}_${level}
574     done
575 }
576
577 enable(){
578     set_all yes $*
579 }
580
581 disable(){
582     set_all no $*
583 }
584
585 enable_weak(){
586     set_weak yes $*
587 }
588
589 disable_weak(){
590     set_weak no $*
591 }
592
593 enable_safe(){
594     for var; do
595         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
596     done
597 }
598
599 disable_safe(){
600     for var; do
601         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
602     done
603 }
604
605 do_enable_deep(){
606     for var; do
607         enabled $var && continue
608         eval sel="\$${var}_select"
609         eval sgs="\$${var}_suggest"
610         pushvar var sgs
611         enable_deep $sel
612         popvar sgs
613         enable_deep_weak $sgs
614         popvar var
615     done
616 }
617
618 enable_deep(){
619     do_enable_deep $*
620     enable $*
621 }
622
623 enable_deep_weak(){
624     for var; do
625         disabled $var && continue
626         pushvar var
627         do_enable_deep $var
628         popvar var
629         enable_weak $var
630     done
631 }
632
633 enabled(){
634     test "${1#!}" = "$1" && op='=' || op=!=
635     eval test "x\$${1#!}" $op "xyes"
636 }
637
638 disabled(){
639     test "${1#!}" = "$1" && op='=' || op=!=
640     eval test "x\$${1#!}" $op "xno"
641 }
642
643 enabled_all(){
644     for opt; do
645         enabled $opt || return 1
646     done
647 }
648
649 disabled_all(){
650     for opt; do
651         disabled $opt || return 1
652     done
653 }
654
655 enabled_any(){
656     for opt; do
657         enabled $opt && return 0
658     done
659 }
660
661 disabled_any(){
662     for opt; do
663         disabled $opt && return 0
664     done
665     return 1
666 }
667
668 set_default(){
669     for opt; do
670         eval : \${$opt:=\$${opt}_default}
671     done
672 }
673
674 is_in(){
675     value=$1
676     shift
677     for var in $*; do
678         [ $var = $value ] && return 0
679     done
680     return 1
681 }
682
683 do_check_deps(){
684     for cfg; do
685         cfg="${cfg#!}"
686         enabled ${cfg}_checking && die "Circular dependency for $cfg."
687         disabled ${cfg}_checking && continue
688         enable ${cfg}_checking
689         append allopts $cfg
690
691         eval dep_all="\$${cfg}_deps"
692         eval dep_any="\$${cfg}_deps_any"
693         eval dep_sel="\$${cfg}_select"
694         eval dep_sgs="\$${cfg}_suggest"
695         eval dep_ifa="\$${cfg}_if"
696         eval dep_ifn="\$${cfg}_if_any"
697
698         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
699         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
700         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
701
702         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
703         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
704         enabled_all  $dep_all || disable $cfg
705         enabled_any  $dep_any || disable $cfg
706         disabled_any $dep_sel && disable $cfg
707
708         if enabled $cfg; then
709             enable_deep $dep_sel
710             enable_deep_weak $dep_sgs
711         fi
712
713         disable ${cfg}_checking
714     done
715 }
716
717 check_deps(){
718     unset allopts
719
720     do_check_deps "$@"
721
722     for cfg in $allopts; do
723         enabled $cfg || continue
724         eval dep_extralibs="\$${cfg}_extralibs"
725         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
726     done
727 }
728
729 print_config(){
730     pfx=$1
731     files=$2
732     shift 2
733     map 'eval echo "$v \${$v:-no}"' "$@" |
734     awk "BEGIN { split(\"$files\", files) }
735         {
736             c = \"$pfx\" toupper(\$1);
737             v = \$2;
738             sub(/yes/, 1, v);
739             sub(/no/,  0, v);
740             for (f in files) {
741                 file = files[f];
742                 if (file ~ /\\.h\$/) {
743                     printf(\"#define %s %d\\n\", c, v) >>file;
744                 } else if (file ~ /\\.asm\$/) {
745                     printf(\"%%define %s %d\\n\", c, v) >>file;
746                 } else if (file ~ /\\.mak\$/) {
747                     n = -v ? \"\" : \"!\";
748                     printf(\"%s%s=yes\\n\", n, c) >>file;
749                 } else if (file ~ /\\.texi\$/) {
750                     pre = -v ? \"\" : \"@c \";
751                     yesno = \$2;
752                     c2 = tolower(c);
753                     gsub(/_/, \"-\", c2);
754                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
755                 }
756             }
757         }"
758 }
759
760 print_enabled(){
761     suf=$1
762     shift
763     for v; do
764         enabled $v && printf "%s\n" ${v%$suf};
765     done
766 }
767
768 append(){
769     var=$1
770     shift
771     eval "$var=\"\$$var $*\""
772 }
773
774 prepend(){
775     var=$1
776     shift
777     eval "$var=\"$* \$$var\""
778 }
779
780 unique(){
781     var=$1
782     uniq_list=""
783     for tok in $(eval echo \$$var); do
784         uniq_list="$(filter_out $tok $uniq_list) $tok"
785     done
786     eval "$var=\"${uniq_list}\""
787 }
788
789 add_cppflags(){
790     append CPPFLAGS "$@"
791 }
792
793 add_cflags(){
794     append CFLAGS $($cflags_filter "$@")
795 }
796
797 add_cxxflags(){
798     append CXXFLAGS $($cflags_filter "$@")
799 }
800
801 add_asflags(){
802     append ASFLAGS $($asflags_filter "$@")
803 }
804
805 add_ldflags(){
806     append LDFLAGS $($ldflags_filter "$@")
807 }
808
809 add_ldexeflags(){
810     append LDEXEFLAGS $($ldflags_filter "$@")
811 }
812
813 add_ldlibflags(){
814     append LDLIBFLAGS $($ldflags_filter "$@")
815 }
816
817 add_stripflags(){
818     append ASMSTRIPFLAGS "$@"
819 }
820
821 add_extralibs(){
822     prepend extralibs $($ldflags_filter "$@")
823 }
824
825 add_host_cppflags(){
826     append host_cppflags "$@"
827 }
828
829 add_host_cflags(){
830     append host_cflags $($host_cflags_filter "$@")
831 }
832
833 add_host_ldflags(){
834     append host_ldflags $($host_ldflags_filter "$@")
835 }
836
837 add_compat(){
838     append compat_objs $1
839     shift
840     map 'add_cppflags -D$v' "$@"
841 }
842
843 check_cmd(){
844     log "$@"
845     "$@" >> $logfile 2>&1
846 }
847
848 check_stat(){
849     log check_stat "$@"
850     stat "$1" >> $logfile 2>&1
851 }
852
853 cc_o(){
854     eval printf '%s\\n' $CC_O
855 }
856
857 cc_e(){
858     eval printf '%s\\n' $CC_E
859 }
860
861 check_cc(){
862     log check_cc "$@"
863     cat > $TMPC
864     log_file $TMPC
865     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
866 }
867
868 check_cxx(){
869     log check_cxx "$@"
870     cat > $TMPCPP
871     log_file $TMPCPP
872     check_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
873 }
874
875 check_oc(){
876     log check_oc "$@"
877     cat > $TMPM
878     log_file $TMPM
879     check_cmd $cc -Werror=missing-prototypes $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPM
880 }
881
882 check_cpp(){
883     log check_cpp "$@"
884     cat > $TMPC
885     log_file $TMPC
886     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
887 }
888
889 as_o(){
890     eval printf '%s\\n' $AS_O
891 }
892
893 check_as(){
894     log check_as "$@"
895     cat > $TMPS
896     log_file $TMPS
897     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
898 }
899
900 check_inline_asm(){
901     log check_inline_asm "$@"
902     name="$1"
903     code="$2"
904     shift 2
905     disable $name
906     check_cc "$@" <<EOF && enable $name
907 void foo(void){ __asm__ volatile($code); }
908 EOF
909 }
910
911 check_insn(){
912     log check_insn "$@"
913     check_inline_asm ${1}_inline "\"$2\""
914     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
915 }
916
917 check_yasm(){
918     log check_yasm "$@"
919     echo "$1" > $TMPS
920     log_file $TMPS
921     shift 1
922     check_cmd $yasmexe $YASMFLAGS -Werror "$@" -o $TMPO $TMPS
923 }
924
925 ld_o(){
926     eval printf '%s\\n' $LD_O
927 }
928
929 check_ld(){
930     log check_ld "$@"
931     type=$1
932     shift 1
933     flags=$(filter_out '-l*|*.so' $@)
934     libs=$(filter '-l*|*.so' $@)
935     check_$type $($cflags_filter $flags) || return
936     flags=$($ldflags_filter $flags)
937     libs=$($ldflags_filter $libs)
938     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
939 }
940
941 print_include(){
942     hdr=$1
943     test "${hdr%.h}" = "${hdr}" &&
944         echo "#include $hdr"    ||
945         echo "#include <$hdr>"
946 }
947
948 check_code(){
949     log check_code "$@"
950     check=$1
951     headers=$2
952     code=$3
953     shift 3
954     {
955         for hdr in $headers; do
956             print_include $hdr
957         done
958         echo "int main(void) { $code; return 0; }"
959     } | check_$check "$@"
960 }
961
962 check_cppflags(){
963     log check_cppflags "$@"
964     check_cc "$@" <<EOF && append CPPFLAGS "$@"
965 int x;
966 EOF
967 }
968
969 test_cflags(){
970     log test_cflags "$@"
971     set -- $($cflags_filter "$@")
972     check_cc "$@" <<EOF
973 int x;
974 EOF
975 }
976
977 check_cflags(){
978     log check_cflags "$@"
979     test_cflags "$@" && add_cflags "$@"
980 }
981
982 check_cxxflags(){
983     log check_cxxflags "$@"
984     set -- $($cflags_filter "$@")
985     check_cxx "$@" <<EOF && append CXXFLAGS "$@"
986 int x;
987 EOF
988 }
989
990 test_ldflags(){
991     log test_ldflags "$@"
992     check_ld "cc" "$@" <<EOF
993 int main(void){ return 0; }
994 EOF
995 }
996
997 check_ldflags(){
998     log check_ldflags "$@"
999     test_ldflags "$@" && add_ldflags "$@"
1000 }
1001
1002 test_stripflags(){
1003     log test_stripflags "$@"
1004     # call check_cc to get a fresh TMPO
1005     check_cc <<EOF
1006 int main(void) { return 0; }
1007 EOF
1008     check_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
1009 }
1010
1011 check_stripflags(){
1012     log check_stripflags "$@"
1013     test_stripflags "$@" && add_stripflags "$@"
1014 }
1015
1016 check_header(){
1017     log check_header "$@"
1018     header=$1
1019     shift
1020     disable_safe $header
1021     check_cpp "$@" <<EOF && enable_safe $header
1022 #include <$header>
1023 int x;
1024 EOF
1025 }
1026
1027 check_header_oc(){
1028     log check_header_oc "$@"
1029     rm -f -- "$TMPO"
1030     header=$1
1031     shift
1032     disable_safe $header
1033     {
1034        echo "#include <$header>"
1035        echo "int main(void) { return 0; }"
1036     } | check_oc && check_stat "$TMPO" && enable_safe $headers
1037 }
1038
1039 check_func(){
1040     log check_func "$@"
1041     func=$1
1042     shift
1043     disable $func
1044     check_ld "cc" "$@" <<EOF && enable $func
1045 extern int $func();
1046 int main(void){ $func(); }
1047 EOF
1048 }
1049
1050 check_mathfunc(){
1051     log check_mathfunc "$@"
1052     func=$1
1053     narg=$2
1054     shift 2
1055     test $narg = 2 && args="f, g" || args="f"
1056     disable $func
1057     check_ld "cc" "$@" <<EOF && enable $func
1058 #include <math.h>
1059 float foo(float f, float g) { return $func($args); }
1060 int main(void){ return (int) foo; }
1061 EOF
1062 }
1063
1064 check_func_headers(){
1065     log check_func_headers "$@"
1066     headers=$1
1067     funcs=$2
1068     shift 2
1069     {
1070         for hdr in $headers; do
1071             print_include $hdr
1072         done
1073         for func in $funcs; do
1074             echo "long check_$func(void) { return (long) $func; }"
1075         done
1076         echo "int main(void) { return 0; }"
1077     } | check_ld "cc" "$@" && enable $funcs && enable_safe $headers
1078 }
1079
1080 check_class_headers_cpp(){
1081     log check_class_headers_cpp "$@"
1082     headers=$1
1083     classes=$2
1084     shift 2
1085     {
1086         for hdr in $headers; do
1087             echo "#include <$hdr>"
1088         done
1089         echo "int main(void) { "
1090         i=1
1091         for class in $classes; do
1092             echo "$class obj$i;"
1093             i=$(expr $i + 1)
1094         done
1095         echo "return 0; }"
1096     } | check_ld "cxx" "$@" && enable $funcs && enable_safe $headers
1097 }
1098
1099 check_cpp_condition(){
1100     log check_cpp_condition "$@"
1101     header=$1
1102     condition=$2
1103     shift 2
1104     check_cpp "$@" <<EOF
1105 #include <$header>
1106 #if !($condition)
1107 #error "unsatisfied condition: $condition"
1108 #endif
1109 EOF
1110 }
1111
1112 check_lib(){
1113     log check_lib "$@"
1114     header="$1"
1115     func="$2"
1116     shift 2
1117     check_header $header && check_func $func "$@" && add_extralibs "$@"
1118 }
1119
1120 check_lib2(){
1121     log check_lib2 "$@"
1122     headers="$1"
1123     funcs="$2"
1124     shift 2
1125     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
1126 }
1127
1128 check_lib_cpp(){
1129     log check_lib_cpp "$@"
1130     headers="$1"
1131     classes="$2"
1132     shift 2
1133     check_class_headers_cpp "$headers" "$classes" "$@" && add_extralibs "$@"
1134 }
1135
1136 check_pkg_config(){
1137     log check_pkg_config "$@"
1138     pkgandversion="$1"
1139     pkg="${1%% *}"
1140     headers="$2"
1141     funcs="$3"
1142     shift 3
1143     check_cmd $pkg_config --exists --print-errors $pkgandversion || return
1144     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1145     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1146     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1147         set_safe "${pkg}_cflags" $pkg_cflags   &&
1148         set_safe "${pkg}_libs"   $pkg_libs
1149 }
1150
1151 check_exec(){
1152     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1153 }
1154
1155 check_exec_crash(){
1156     code=$(cat)
1157
1158     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1159     # are safe but may not be available everywhere.  Thus we use
1160     # raise(SIGTERM) instead.  The check is run in a subshell so we
1161     # can redirect the "Terminated" message from the shell.  SIGBUS
1162     # is not defined by standard C so it is used conditionally.
1163
1164     (check_exec "$@") >> $logfile 2>&1 <<EOF
1165 #include <signal.h>
1166 static void sighandler(int sig){
1167     raise(SIGTERM);
1168 }
1169 int foo(void){
1170     $code
1171 }
1172 int (*func_ptr)(void) = foo;
1173 int main(void){
1174     signal(SIGILL, sighandler);
1175     signal(SIGFPE, sighandler);
1176     signal(SIGSEGV, sighandler);
1177 #ifdef SIGBUS
1178     signal(SIGBUS, sighandler);
1179 #endif
1180     return func_ptr();
1181 }
1182 EOF
1183 }
1184
1185 check_type(){
1186     log check_type "$@"
1187     headers=$1
1188     type=$2
1189     shift 2
1190     disable_safe "$type"
1191     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1192 }
1193
1194 check_struct(){
1195     log check_struct "$@"
1196     headers=$1
1197     struct=$2
1198     member=$3
1199     shift 3
1200     disable_safe "${struct}_${member}"
1201     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1202         enable_safe "${struct}_${member}"
1203 }
1204
1205 check_builtin(){
1206     log check_builtin "$@"
1207     name=$1
1208     headers=$2
1209     builtin=$3
1210     shift 3
1211     disable "$name"
1212     check_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1213 }
1214
1215 check_compile_assert(){
1216     log check_compile_assert "$@"
1217     name=$1
1218     headers=$2
1219     condition=$3
1220     shift 3
1221     disable "$name"
1222     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1223 }
1224
1225 require(){
1226     name="$1"
1227     header="$2"
1228     func="$3"
1229     shift 3
1230     check_lib $header $func "$@" || die "ERROR: $name not found"
1231 }
1232
1233 require2(){
1234     name="$1"
1235     headers="$2"
1236     func="$3"
1237     shift 3
1238     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
1239 }
1240
1241 require_cpp(){
1242     name="$1"
1243     headers="$2"
1244     classes="$3"
1245     shift 3
1246     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1247 }
1248
1249 use_pkg_config(){
1250     pkg="$1"
1251     check_pkg_config "$@" || return 1
1252     add_cflags    $(get_safe "${pkg}_cflags")
1253     add_extralibs $(get_safe "${pkg}_libs")
1254 }
1255
1256 require_pkg_config(){
1257     use_pkg_config "$@" || die "ERROR: $pkg not found using pkg-config$pkg_config_fail_message"
1258 }
1259
1260 require_libfreetype(){
1261     log require_libfreetype "$@"
1262     pkg="freetype2"
1263     check_cmd $pkg_config --exists --print-errors $pkg \
1264       || die "ERROR: $pkg not found"
1265     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1266     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1267     {
1268         echo "#include <ft2build.h>"
1269         echo "#include FT_FREETYPE_H"
1270         echo "long check_func(void) { return (long) FT_Init_FreeType; }"
1271         echo "int main(void) { return 0; }"
1272     } | check_ld "cc" $pkg_cflags $pkg_libs \
1273       && set_safe "${pkg}_cflags" $pkg_cflags \
1274       && set_safe "${pkg}_libs"   $pkg_libs \
1275       || die "ERROR: $pkg not found"
1276     add_cflags    $(get_safe "${pkg}_cflags")
1277     add_extralibs $(get_safe "${pkg}_libs")
1278 }
1279
1280 hostcc_e(){
1281     eval printf '%s\\n' $HOSTCC_E
1282 }
1283
1284 hostcc_o(){
1285     eval printf '%s\\n' $HOSTCC_O
1286 }
1287
1288 check_host_cc(){
1289     log check_host_cc "$@"
1290     cat > $TMPC
1291     log_file $TMPC
1292     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1293 }
1294
1295 check_host_cpp(){
1296     log check_host_cpp "$@"
1297     cat > $TMPC
1298     log_file $TMPC
1299     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1300 }
1301
1302 check_host_cppflags(){
1303     log check_host_cppflags "$@"
1304     check_host_cc "$@" <<EOF && append host_cppflags "$@"
1305 int x;
1306 EOF
1307 }
1308
1309 check_host_cflags(){
1310     log check_host_cflags "$@"
1311     set -- $($host_cflags_filter "$@")
1312     check_host_cc "$@" <<EOF && append host_cflags "$@"
1313 int x;
1314 EOF
1315 }
1316
1317 check_host_cpp_condition(){
1318     log check_host_cpp_condition "$@"
1319     header=$1
1320     condition=$2
1321     shift 2
1322     check_host_cpp "$@" <<EOF
1323 #include <$header>
1324 #if !($condition)
1325 #error "unsatisfied condition: $condition"
1326 #endif
1327 EOF
1328 }
1329
1330 cp_if_changed(){
1331     cmp -s "$1" "$2" && echo "$2 is unchanged" && return
1332     mkdir -p "$(dirname $2)"
1333     $cp_f "$1" "$2"
1334 }
1335
1336 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1337 # system-dependent things.
1338
1339 AVCODEC_COMPONENTS="
1340     bsfs
1341     decoders
1342     encoders
1343     hwaccels
1344     parsers
1345 "
1346
1347 AVDEVICE_COMPONENTS="
1348     indevs
1349     outdevs
1350 "
1351 AVFILTER_COMPONENTS="
1352     filters
1353 "
1354 AVFORMAT_COMPONENTS="
1355     demuxers
1356     muxers
1357     protocols
1358 "
1359
1360 AVRESAMPLE_COMPONENTS=""
1361 AVUTIL_COMPONENTS=""
1362
1363 COMPONENT_LIST="
1364     $AVCODEC_COMPONENTS
1365     $AVDEVICE_COMPONENTS
1366     $AVFILTER_COMPONENTS
1367     $AVFORMAT_COMPONENTS
1368     $AVRESAMPLE_COMPONENTS
1369     $AVUTIL_COMPONENTS
1370 "
1371
1372 EXAMPLE_LIST="
1373     avio_reading_example
1374     avio_dir_cmd_example
1375     decoding_encoding_example
1376     demuxing_decoding_example
1377     extract_mvs_example
1378     filter_audio_example
1379     filtering_audio_example
1380     filtering_video_example
1381     metadata_example
1382     muxing_example
1383     qsvdec_example
1384     remuxing_example
1385     resampling_audio_example
1386     scaling_video_example
1387     transcode_aac_example
1388     transcoding_example
1389 "
1390
1391 EXTERNAL_LIBRARY_LIST="
1392     avisynth
1393     bzlib
1394     chromaprint
1395     crystalhd
1396     decklink
1397     frei0r
1398     gnutls
1399     iconv
1400     ladspa
1401     libaacplus
1402     libass
1403     libbluray
1404     libbs2b
1405     libcaca
1406     libcdio
1407     libcelt
1408     libdc1394
1409     libdcadec
1410     libfaac
1411     libfdk_aac
1412     libflite
1413     libfontconfig
1414     libfreetype
1415     libfribidi
1416     libgme
1417     libgsm
1418     libiec61883
1419     libilbc
1420     libkvazaar
1421     libmfx
1422     libmodplug
1423     libmp3lame
1424     libnut
1425     libopencore_amrnb
1426     libopencore_amrwb
1427     libopencv
1428     libopenh264
1429     libopenjpeg
1430     libopus
1431     libpulse
1432     libquvi
1433     librtmp
1434     librubberband
1435     libschroedinger
1436     libshine
1437     libsmbclient
1438     libsnappy
1439     libsoxr
1440     libspeex
1441     libssh
1442     libstagefright_h264
1443     libtesseract
1444     libtheora
1445     libtwolame
1446     libutvideo
1447     libv4l2
1448     libvidstab
1449     libvo_aacenc
1450     libvo_amrwbenc
1451     libvorbis
1452     libvpx
1453     libwavpack
1454     libwebp
1455     libx264
1456     libx265
1457     libxavs
1458     libxcb
1459     libxcb_shm
1460     libxcb_shape
1461     libxcb_xfixes
1462     libxvid
1463     libzimg
1464     libzmq
1465     libzvbi
1466     lzma
1467     mmal
1468     nvenc
1469     openal
1470     opencl
1471     opengl
1472     openssl
1473     schannel
1474     sdl
1475     securetransport
1476     x11grab
1477     xlib
1478     zlib
1479 "
1480
1481 DOCUMENT_LIST="
1482     doc
1483     htmlpages
1484     manpages
1485     podpages
1486     txtpages
1487 "
1488
1489 FEATURE_LIST="
1490     ftrapv
1491     gray
1492     hardcoded_tables
1493     runtime_cpudetect
1494     safe_bitstream_reader
1495     shared
1496     small
1497     static
1498     swscale_alpha
1499 "
1500
1501 HWACCEL_LIST="
1502     d3d11va
1503     dxva2
1504     vaapi
1505     vda
1506     vdpau
1507     videotoolbox
1508     xvmc
1509 "
1510
1511 LIBRARY_LIST="
1512     avcodec
1513     avdevice
1514     avfilter
1515     avformat
1516     avresample
1517     avutil
1518     postproc
1519     swresample
1520     swscale
1521 "
1522
1523 LICENSE_LIST="
1524     gpl
1525     nonfree
1526     version3
1527 "
1528
1529 PROGRAM_LIST="
1530     ffplay
1531     ffprobe
1532     ffserver
1533     ffmpeg
1534 "
1535
1536 SUBSYSTEM_LIST="
1537     dct
1538     dwt
1539     error_resilience
1540     faan
1541     fast_unaligned
1542     fft
1543     lsp
1544     lzo
1545     mdct
1546     pixelutils
1547     network
1548     rdft
1549 "
1550
1551 CONFIG_LIST="
1552     $COMPONENT_LIST
1553     $DOCUMENT_LIST
1554     $EXAMPLE_LIST
1555     $EXTERNAL_LIBRARY_LIST
1556     $FEATURE_LIST
1557     $HWACCEL_LIST
1558     $LICENSE_LIST
1559     $LIBRARY_LIST
1560     $PROGRAM_LIST
1561     $SUBSYSTEM_LIST
1562     fontconfig
1563     incompatible_libav_abi
1564     memalign_hack
1565     memory_poisoning
1566     neon_clobber_test
1567     pic
1568     pod2man
1569     raise_major
1570     thumb
1571     valgrind_backtrace
1572     xmm_clobber_test
1573 "
1574
1575 THREADS_LIST="
1576     pthreads
1577     os2threads
1578     w32threads
1579 "
1580
1581 ATOMICS_LIST="
1582     atomics_gcc
1583     atomics_suncc
1584     atomics_win32
1585 "
1586
1587 ARCH_LIST="
1588     aarch64
1589     alpha
1590     arm
1591     avr32
1592     avr32_ap
1593     avr32_uc
1594     bfin
1595     ia64
1596     m68k
1597     mips
1598     mips64
1599     parisc
1600     ppc
1601     ppc64
1602     s390
1603     sh4
1604     sparc
1605     sparc64
1606     tilegx
1607     tilepro
1608     tomi
1609     x86
1610     x86_32
1611     x86_64
1612 "
1613
1614 ARCH_EXT_LIST_ARM="
1615     armv5te
1616     armv6
1617     armv6t2
1618     armv8
1619     neon
1620     vfp
1621     vfpv3
1622     setend
1623 "
1624
1625 ARCH_EXT_LIST_MIPS="
1626     mipsfpu
1627     mips32r2
1628     mips32r5
1629     mips64r6
1630     mipsdspr1
1631     mipsdspr2
1632     msa
1633 "
1634
1635 ARCH_EXT_LIST_LOONGSON="
1636     loongson2
1637     loongson3
1638     mmi
1639 "
1640
1641 ARCH_EXT_LIST_X86_SIMD="
1642     aesni
1643     amd3dnow
1644     amd3dnowext
1645     avx
1646     avx2
1647     fma3
1648     fma4
1649     mmx
1650     mmxext
1651     sse
1652     sse2
1653     sse3
1654     sse4
1655     sse42
1656     ssse3
1657     xop
1658 "
1659
1660 ARCH_EXT_LIST_PPC="
1661     altivec
1662     dcbzl
1663     ldbrx
1664     power8
1665     ppc4xx
1666     vsx
1667 "
1668
1669 ARCH_EXT_LIST_X86="
1670     $ARCH_EXT_LIST_X86_SIMD
1671     cpunop
1672     i686
1673 "
1674
1675 ARCH_EXT_LIST="
1676     $ARCH_EXT_LIST_ARM
1677     $ARCH_EXT_LIST_PPC
1678     $ARCH_EXT_LIST_X86
1679     $ARCH_EXT_LIST_MIPS
1680     $ARCH_EXT_LIST_LOONGSON
1681 "
1682
1683 ARCH_FEATURES="
1684     aligned_stack
1685     fast_64bit
1686     fast_clz
1687     fast_cmov
1688     local_aligned_8
1689     local_aligned_16
1690     local_aligned_32
1691     simd_align_16
1692 "
1693
1694 BUILTIN_LIST="
1695     atomic_cas_ptr
1696     atomic_compare_exchange
1697     machine_rw_barrier
1698     MemoryBarrier
1699     mm_empty
1700     rdtsc
1701     sarestart
1702     sync_val_compare_and_swap
1703 "
1704 HAVE_LIST_CMDLINE="
1705     inline_asm
1706     symver
1707     yasm
1708 "
1709
1710 HAVE_LIST_PUB="
1711     bigendian
1712     fast_unaligned
1713     incompatible_libav_abi
1714 "
1715
1716 HEADERS_LIST="
1717     alsa_asoundlib_h
1718     altivec_h
1719     arpa_inet_h
1720     asm_types_h
1721     cdio_paranoia_h
1722     cdio_paranoia_paranoia_h
1723     dev_bktr_ioctl_bt848_h
1724     dev_bktr_ioctl_meteor_h
1725     dev_ic_bt8xx_h
1726     dev_video_bktr_ioctl_bt848_h
1727     dev_video_meteor_ioctl_meteor_h
1728     direct_h
1729     dirent_h
1730     dlfcn_h
1731     d3d11_h
1732     dxva_h
1733     ES2_gl_h
1734     gsm_h
1735     io_h
1736     mach_mach_time_h
1737     machine_ioctl_bt848_h
1738     machine_ioctl_meteor_h
1739     malloc_h
1740     openjpeg_1_5_openjpeg_h
1741     OpenGL_gl3_h
1742     poll_h
1743     sndio_h
1744     soundcard_h
1745     sys_mman_h
1746     sys_param_h
1747     sys_resource_h
1748     sys_select_h
1749     sys_soundcard_h
1750     sys_time_h
1751     sys_un_h
1752     sys_videoio_h
1753     termios_h
1754     udplite_h
1755     unistd_h
1756     valgrind_valgrind_h
1757     windows_h
1758     winsock2_h
1759 "
1760
1761 INTRINSICS_LIST="
1762     intrinsics_neon
1763 "
1764
1765 MATH_FUNCS="
1766     atanf
1767     atan2f
1768     cbrt
1769     cbrtf
1770     copysign
1771     cosf
1772     erf
1773     exp2
1774     exp2f
1775     expf
1776     isinf
1777     isnan
1778     ldexpf
1779     llrint
1780     llrintf
1781     log2
1782     log2f
1783     log10f
1784     lrint
1785     lrintf
1786     powf
1787     rint
1788     round
1789     roundf
1790     sinf
1791     trunc
1792     truncf
1793 "
1794
1795 SYSTEM_FUNCS="
1796     access
1797     aligned_malloc
1798     clock_gettime
1799     closesocket
1800     CommandLineToArgvW
1801     CoTaskMemFree
1802     CryptGenRandom
1803     dlopen
1804     fcntl
1805     flt_lim
1806     fork
1807     getaddrinfo
1808     gethrtime
1809     getopt
1810     GetProcessAffinityMask
1811     GetProcessMemoryInfo
1812     GetProcessTimes
1813     getrusage
1814     GetSystemTimeAsFileTime
1815     gettimeofday
1816     glob
1817     glXGetProcAddress
1818     gmtime_r
1819     inet_aton
1820     isatty
1821     jack_port_get_latency_range
1822     kbhit
1823     localtime_r
1824     lstat
1825     lzo1x_999_compress
1826     mach_absolute_time
1827     MapViewOfFile
1828     memalign
1829     mkstemp
1830     mmap
1831     mprotect
1832     nanosleep
1833     PeekNamedPipe
1834     posix_memalign
1835     pthread_cancel
1836     sched_getaffinity
1837     SetConsoleTextAttribute
1838     SetConsoleCtrlHandler
1839     setmode
1840     setrlimit
1841     Sleep
1842     strerror_r
1843     sysconf
1844     sysctl
1845     usleep
1846     UTGetOSTypeFromString
1847     VirtualAlloc
1848     wglGetProcAddress
1849 "
1850
1851 TOOLCHAIN_FEATURES="
1852     as_dn_directive
1853     as_func
1854     as_object_arch
1855     asm_mod_q
1856     attribute_may_alias
1857     attribute_packed
1858     ebp_available
1859     ebx_available
1860     gnu_as
1861     gnu_windres
1862     ibm_asm
1863     inline_asm_labels
1864     inline_asm_nonlocal_labels
1865     inline_asm_direct_symbol_refs
1866     pragma_deprecated
1867     rsync_contimeout
1868     symver_asm_label
1869     symver_gnu_asm
1870     vfp_args
1871     xform_asm
1872     xmm_clobbers
1873 "
1874
1875 TYPES_LIST="
1876     CONDITION_VARIABLE_Ptr
1877     socklen_t
1878     struct_addrinfo
1879     struct_dcadec_exss_info_matrix_encoding
1880     struct_group_source_req
1881     struct_ip_mreq_source
1882     struct_ipv6_mreq
1883     struct_pollfd
1884     struct_rusage_ru_maxrss
1885     struct_sctp_event_subscribe
1886     struct_sockaddr_in6
1887     struct_sockaddr_sa_len
1888     struct_sockaddr_storage
1889     struct_stat_st_mtim_tv_nsec
1890     struct_v4l2_frmivalenum_discrete
1891 "
1892
1893 HAVE_LIST="
1894     $ARCH_EXT_LIST
1895     $(add_suffix _external $ARCH_EXT_LIST)
1896     $(add_suffix _inline   $ARCH_EXT_LIST)
1897     $ARCH_FEATURES
1898     $ATOMICS_LIST
1899     $BUILTIN_LIST
1900     $HAVE_LIST_CMDLINE
1901     $HAVE_LIST_PUB
1902     $HEADERS_LIST
1903     $INTRINSICS_LIST
1904     $MATH_FUNCS
1905     $SYSTEM_FUNCS
1906     $THREADS_LIST
1907     $TOOLCHAIN_FEATURES
1908     $TYPES_LIST
1909     atomics_native
1910     dos_paths
1911     dxva2api_cobj
1912     dxva2_lib
1913     winrt
1914     libc_msvcrt
1915     libdc1394_1
1916     libdc1394_2
1917     makeinfo
1918     makeinfo_html
1919     perl
1920     pod2man
1921     sdl
1922     section_data_rel_ro
1923     texi2html
1924     threads
1925     vaapi_x11
1926     vdpau_x11
1927     xlib
1928 "
1929
1930 # options emitted with CONFIG_ prefix but not available on the command line
1931 CONFIG_EXTRA="
1932     aandcttables
1933     ac3dsp
1934     audio_frame_queue
1935     audiodsp
1936     blockdsp
1937     bswapdsp
1938     cabac
1939     dvprofile
1940     exif
1941     faandct
1942     faanidct
1943     fdctdsp
1944     flacdsp
1945     fmtconvert
1946     frame_thread_encoder
1947     g722dsp
1948     gcrypt
1949     gmp
1950     golomb
1951     gplv3
1952     h263dsp
1953     h264chroma
1954     h264dsp
1955     h264pred
1956     h264qpel
1957     hpeldsp
1958     huffman
1959     huffyuvdsp
1960     huffyuvencdsp
1961     idctdsp
1962     iirfilter
1963     imdct15
1964     intrax8
1965     ividsp
1966     jpegtables
1967     libx262
1968     lgplv3
1969     llauddsp
1970     llviddsp
1971     lpc
1972     lzf
1973     me_cmp
1974     mpeg_er
1975     mpegaudio
1976     mpegaudiodsp
1977     mpegvideo
1978     mpegvideoenc
1979     mss34dsp
1980     pixblockdsp
1981     qpeldsp
1982     qsv
1983     qsvdec
1984     qsvenc
1985     rangecoder
1986     riffdec
1987     riffenc
1988     rtpdec
1989     rtpenc_chain
1990     rv34dsp
1991     sinewin
1992     snappy
1993     startcode
1994     texturedsp
1995     texturedspenc
1996     tpeldsp
1997     videodsp
1998     vp3dsp
1999     vp56dsp
2000     vp8dsp
2001     wma_freqs
2002     wmv2dsp
2003 "
2004
2005 CMDLINE_SELECT="
2006     $ARCH_EXT_LIST
2007     $CONFIG_LIST
2008     $HAVE_LIST_CMDLINE
2009     $THREADS_LIST
2010     asm
2011     cross_compile
2012     debug
2013     extra_warnings
2014     logging
2015     lto
2016     optimizations
2017     rpath
2018     stripping
2019 "
2020
2021 PATHS_LIST="
2022     bindir
2023     datadir
2024     docdir
2025     incdir
2026     libdir
2027     mandir
2028     pkgconfigdir
2029     prefix
2030     shlibdir
2031 "
2032
2033 CMDLINE_SET="
2034     $PATHS_LIST
2035     ar
2036     arch
2037     as
2038     assert_level
2039     build_suffix
2040     cc
2041     cpu
2042     cross_prefix
2043     custom_allocator
2044     cxx
2045     dep_cc
2046     doxygen
2047     env
2048     extra_version
2049     gas
2050     host_cc
2051     host_cflags
2052     host_ld
2053     host_ldflags
2054     host_libs
2055     host_os
2056     install
2057     ld
2058     logfile
2059     malloc_prefix
2060     nm
2061     optflags
2062     pkg_config
2063     pkg_config_flags
2064     progs_suffix
2065     random_seed
2066     ranlib
2067     samples
2068     strip
2069     sws_max_filter_size
2070     sysinclude
2071     sysroot
2072     target_exec
2073     target_os
2074     target_path
2075     target_samples
2076     tempprefix
2077     toolchain
2078     valgrind
2079     yasmexe
2080 "
2081
2082 CMDLINE_APPEND="
2083     extra_cflags
2084     extra_cxxflags
2085     host_cppflags
2086 "
2087
2088 # code dependency declarations
2089
2090 # architecture extensions
2091
2092 armv5te_deps="arm"
2093 armv6_deps="arm"
2094 armv6t2_deps="arm"
2095 armv8_deps="aarch64"
2096 neon_deps_any="aarch64 arm"
2097 intrinsics_neon_deps="neon"
2098 vfp_deps_any="aarch64 arm"
2099 vfpv3_deps="vfp"
2100 setend_deps="arm"
2101
2102 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2103
2104 mipsfpu_deps="mips"
2105 mipsdspr1_deps="mips"
2106 mipsdspr2_deps="mips"
2107 mips32r2_deps="mips"
2108 mips32r5_deps="mips"
2109 mips64r6_deps="mips"
2110 msa_deps="mips"
2111 mmi_deps="mips"
2112
2113 altivec_deps="ppc"
2114 dcbzl_deps="ppc"
2115 ldbrx_deps="ppc"
2116 ppc4xx_deps="ppc"
2117 vsx_deps="altivec"
2118 power8_deps="vsx"
2119
2120 cpunop_deps="i686"
2121 x86_64_select="i686"
2122 x86_64_suggest="fast_cmov"
2123
2124 amd3dnow_deps="mmx"
2125 amd3dnowext_deps="amd3dnow"
2126 i686_deps="x86"
2127 mmx_deps="x86"
2128 mmxext_deps="mmx"
2129 sse_deps="mmxext"
2130 sse2_deps="sse"
2131 sse3_deps="sse2"
2132 ssse3_deps="sse3"
2133 sse4_deps="ssse3"
2134 sse42_deps="sse4"
2135 aesni_deps="sse42"
2136 avx_deps="sse42"
2137 xop_deps="avx"
2138 fma3_deps="avx"
2139 fma4_deps="avx"
2140 avx2_deps="avx"
2141
2142 mmx_external_deps="yasm"
2143 mmx_inline_deps="inline_asm"
2144 mmx_suggest="mmx_external mmx_inline"
2145
2146 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2147     eval dep=\$${ext}_deps
2148     eval ${ext}_external_deps='"${dep}_external"'
2149     eval ${ext}_inline_deps='"${dep}_inline"'
2150     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2151 done
2152
2153 aligned_stack_if_any="aarch64 ppc x86"
2154 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2155 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2156 fast_unaligned_if_any="aarch64 ppc x86"
2157 simd_align_16_if_any="altivec neon sse"
2158
2159 # system capabilities
2160 symver_if_any="symver_asm_label symver_gnu_asm"
2161 valgrind_backtrace_deps="!optimizations valgrind_valgrind_h"
2162
2163 # threading support
2164 atomics_gcc_if_any="sync_val_compare_and_swap atomic_compare_exchange"
2165 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2166 atomics_win32_if="MemoryBarrier"
2167 atomics_native_if_any="$ATOMICS_LIST"
2168 w32threads_deps="atomics_native"
2169 threads_if_any="$THREADS_LIST"
2170
2171 # subsystems
2172 dct_select="rdft"
2173 error_resilience_select="me_cmp"
2174 faandct_deps="faan fdctdsp"
2175 faanidct_deps="faan idctdsp"
2176 frame_thread_encoder_deps="encoders threads"
2177 intrax8_select="error_resilience"
2178 mdct_select="fft"
2179 rdft_select="fft"
2180 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2181 mpeg_er_select="error_resilience"
2182 mpegaudio_select="mpegaudiodsp"
2183 mpegaudiodsp_select="dct"
2184 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2185 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
2186 qsvdec_select="qsv"
2187 qsvenc_select="qsv"
2188
2189 # decoders / encoders
2190 aac_decoder_select="imdct15 mdct sinewin"
2191 aac_fixed_decoder_select="mdct sinewin"
2192 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2193 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2194 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2195 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2196 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2197 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2198 adpcm_g722_decoder_select="g722dsp"
2199 adpcm_g722_encoder_select="g722dsp"
2200 aic_decoder_select="golomb idctdsp"
2201 alac_encoder_select="lpc"
2202 als_decoder_select="bswapdsp"
2203 amrnb_decoder_select="lsp"
2204 amrwb_decoder_select="lsp"
2205 amv_decoder_select="sp5x_decoder exif"
2206 amv_encoder_select="aandcttables jpegtables mpegvideoenc"
2207 ape_decoder_select="bswapdsp llauddsp"
2208 apng_decoder_select="zlib"
2209 apng_encoder_select="huffyuvencdsp zlib"
2210 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2211 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2212 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2213 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2214 atrac1_decoder_select="mdct sinewin"
2215 atrac3_decoder_select="mdct"
2216 atrac3p_decoder_select="mdct sinewin"
2217 avrn_decoder_select="exif jpegtables"
2218 bink_decoder_select="blockdsp hpeldsp"
2219 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2220 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2221 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2222 cllc_decoder_select="bswapdsp"
2223 comfortnoise_encoder_select="lpc"
2224 cook_decoder_select="audiodsp mdct sinewin"
2225 cscd_decoder_select="lzo"
2226 cscd_decoder_suggest="zlib"
2227 dca_decoder_select="fmtconvert mdct"
2228 dds_decoder_select="texturedsp"
2229 dirac_decoder_select="dwt golomb videodsp mpegvideoenc"
2230 dnxhd_decoder_select="blockdsp idctdsp"
2231 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2232 dvvideo_decoder_select="dvprofile idctdsp"
2233 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2234 dxa_decoder_select="zlib"
2235 dxv_decoder_select="lzf texturedsp"
2236 eac3_decoder_select="ac3_decoder"
2237 eac3_encoder_select="ac3_encoder"
2238 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2239 eatgq_decoder_select="aandcttables"
2240 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpeg1video_decoder"
2241 exr_decoder_select="zlib"
2242 ffv1_decoder_select="golomb rangecoder"
2243 ffv1_encoder_select="rangecoder"
2244 ffvhuff_decoder_select="huffyuv_decoder"
2245 ffvhuff_encoder_select="huffyuv_encoder"
2246 fic_decoder_select="golomb"
2247 flac_decoder_select="flacdsp golomb"
2248 flac_encoder_select="bswapdsp flacdsp golomb lpc"
2249 flashsv_decoder_select="zlib"
2250 flashsv_encoder_select="zlib"
2251 flashsv2_encoder_select="zlib"
2252 flashsv2_decoder_select="zlib"
2253 flv_decoder_select="h263_decoder"
2254 flv_encoder_select="h263_encoder"
2255 fourxm_decoder_select="blockdsp bswapdsp"
2256 fraps_decoder_select="bswapdsp huffman"
2257 g2m_decoder_select="blockdsp idctdsp jpegtables zlib"
2258 g729_decoder_select="audiodsp"
2259 h261_decoder_select="mpegvideo"
2260 h261_encoder_select="aandcttables mpegvideoenc"
2261 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2262 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2263 h263i_decoder_select="h263_decoder"
2264 h263p_decoder_select="h263_decoder"
2265 h263p_encoder_select="h263_encoder"
2266 h264_decoder_select="cabac golomb h264chroma h264dsp h264pred h264qpel startcode videodsp"
2267 h264_decoder_suggest="error_resilience"
2268 h264_qsv_decoder_deps="libmfx"
2269 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2270 h264_qsv_encoder_deps="libmfx"
2271 h264_qsv_encoder_select="qsvenc"
2272 hap_decoder_select="snappy texturedsp"
2273 hap_encoder_deps="libsnappy"
2274 hap_encoder_select="texturedspenc"
2275 hevc_decoder_select="bswapdsp cabac golomb videodsp"
2276 hevc_qsv_encoder_deps="libmfx"
2277 hevc_qsv_decoder_deps="libmfx"
2278 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec hevc_qsv_hwaccel"
2279 hevc_qsv_encoder_select="qsvenc"
2280 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2281 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llviddsp"
2282 iac_decoder_select="imc_decoder"
2283 imc_decoder_select="bswapdsp fft mdct sinewin"
2284 indeo3_decoder_select="hpeldsp"
2285 indeo4_decoder_select="ividsp"
2286 indeo5_decoder_select="ividsp"
2287 interplay_video_decoder_select="hpeldsp"
2288 jpegls_decoder_select="golomb mjpeg_decoder"
2289 jpegls_encoder_select="golomb"
2290 jv_decoder_select="blockdsp"
2291 lagarith_decoder_select="huffyuvdsp"
2292 ljpeg_encoder_select="aandcttables idctdsp jpegtables"
2293 loco_decoder_select="golomb"
2294 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2295 metasound_decoder_select="lsp mdct sinewin"
2296 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2297 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2298 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2299 mjpegb_decoder_select="mjpeg_decoder"
2300 mlp_decoder_select="mlp_parser"
2301 motionpixels_decoder_select="bswapdsp"
2302 mp1_decoder_select="mpegaudio"
2303 mp1float_decoder_select="mpegaudio"
2304 mp2_decoder_select="mpegaudio"
2305 mp2float_decoder_select="mpegaudio"
2306 mp3_decoder_select="mpegaudio"
2307 mp3adu_decoder_select="mpegaudio"
2308 mp3adufloat_decoder_select="mpegaudio"
2309 mp3float_decoder_select="mpegaudio"
2310 mp3on4_decoder_select="mpegaudio"
2311 mp3on4float_decoder_select="mpegaudio"
2312 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2313 mpc8_decoder_select="mpegaudiodsp"
2314 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
2315 mpeg_xvmc_decoder_select="mpeg2video_decoder"
2316 mpegvideo_decoder_select="mpegvideo"
2317 mpeg1video_decoder_select="mpegvideo"
2318 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2319 mpeg2video_decoder_select="mpegvideo"
2320 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2321 mpeg2_qsv_decoder_deps="libmfx"
2322 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel"
2323 mpeg2_qsv_encoder_deps="libmfx"
2324 mpeg2_qsv_encoder_select="qsvenc"
2325 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2326 mpeg4_encoder_select="h263_encoder"
2327 msa1_decoder_select="mss34dsp"
2328 msmpeg4v1_decoder_select="h263_decoder"
2329 msmpeg4v2_decoder_select="h263_decoder"
2330 msmpeg4v2_encoder_select="h263_encoder"
2331 msmpeg4v3_decoder_select="h263_decoder"
2332 msmpeg4v3_encoder_select="h263_encoder"
2333 mss2_decoder_select="vc1_decoder"
2334 mts2_decoder_select="mss34dsp"
2335 mxpeg_decoder_select="mjpeg_decoder"
2336 nellymoser_decoder_select="mdct sinewin"
2337 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2338 nuv_decoder_select="idctdsp lzo"
2339 on2avc_decoder_select="mdct"
2340 opus_decoder_deps="swresample"
2341 opus_decoder_select="imdct15"
2342 png_decoder_select="zlib"
2343 png_encoder_select="huffyuvencdsp zlib"
2344 prores_decoder_select="blockdsp idctdsp"
2345 prores_encoder_select="fdctdsp"
2346 qcelp_decoder_select="lsp"
2347 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2348 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2349 ra_144_decoder_select="audiodsp"
2350 ralf_decoder_select="golomb"
2351 rawvideo_decoder_select="bswapdsp"
2352 rscc_decoder_select="zlib"
2353 rtjpeg_decoder_select="me_cmp"
2354 rv10_decoder_select="h263_decoder"
2355 rv10_encoder_select="h263_encoder"
2356 rv20_decoder_select="h263_decoder"
2357 rv20_encoder_select="h263_encoder"
2358 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2359 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2360 screenpresso_decoder_select="zlib"
2361 shorten_decoder_select="golomb"
2362 sipr_decoder_select="lsp"
2363 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2364 snow_encoder_select="aandcttables dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2365 sonic_decoder_select="golomb rangecoder"
2366 sonic_encoder_select="golomb rangecoder"
2367 sonic_ls_encoder_select="golomb rangecoder"
2368 sp5x_decoder_select="mjpeg_decoder"
2369 svq1_decoder_select="hpeldsp"
2370 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2371 svq3_decoder_select="h264_decoder hpeldsp tpeldsp"
2372 svq3_decoder_suggest="zlib"
2373 tak_decoder_select="audiodsp"
2374 tdsc_decoder_select="zlib mjpeg_decoder"
2375 theora_decoder_select="vp3_decoder"
2376 thp_decoder_select="mjpeg_decoder"
2377 tiff_decoder_suggest="zlib lzma"
2378 tiff_encoder_suggest="zlib"
2379 truehd_decoder_select="mlp_parser"
2380 truemotion2_decoder_select="bswapdsp"
2381 truespeech_decoder_select="bswapdsp"
2382 tscc_decoder_select="zlib"
2383 twinvq_decoder_select="mdct lsp sinewin"
2384 txd_decoder_select="texturedsp"
2385 utvideo_decoder_select="bswapdsp"
2386 utvideo_encoder_select="bswapdsp huffman huffyuvencdsp"
2387 vble_decoder_select="huffyuvdsp"
2388 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 qpeldsp startcode"
2389 vc1image_decoder_select="vc1_decoder"
2390 vc1_qsv_decoder_deps="libmfx"
2391 vc1_qsv_decoder_select="qsvdec vc1_qsv_hwaccel"
2392 vorbis_decoder_select="mdct"
2393 vorbis_encoder_select="mdct"
2394 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2395 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2396 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2397 vp6a_decoder_select="vp6_decoder"
2398 vp6f_decoder_select="vp6_decoder"
2399 vp7_decoder_select="h264pred videodsp vp8dsp"
2400 vp8_decoder_select="h264pred videodsp vp8dsp"
2401 vp9_decoder_select="videodsp vp9_parser"
2402 webp_decoder_select="vp8_decoder"
2403 wmalossless_decoder_select="llauddsp"
2404 wmapro_decoder_select="mdct sinewin wma_freqs"
2405 wmav1_decoder_select="mdct sinewin wma_freqs"
2406 wmav1_encoder_select="mdct sinewin wma_freqs"
2407 wmav2_decoder_select="mdct sinewin wma_freqs"
2408 wmav2_encoder_select="mdct sinewin wma_freqs"
2409 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2410 wmv1_decoder_select="h263_decoder"
2411 wmv1_encoder_select="h263_encoder"
2412 wmv2_decoder_select="blockdsp h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2413 wmv2_encoder_select="h263_encoder wmv2dsp"
2414 wmv3_decoder_select="vc1_decoder"
2415 wmv3image_decoder_select="wmv3_decoder"
2416 zerocodec_decoder_select="zlib"
2417 zlib_decoder_select="zlib"
2418 zlib_encoder_select="zlib"
2419 zmbv_decoder_select="zlib"
2420 zmbv_encoder_select="zlib"
2421
2422 # hardware accelerators
2423 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2424 d3d11va_deps="d3d11_h dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2425 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode"
2426 vaapi_deps="va_va_h"
2427 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
2428 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
2429 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
2430 videotoolbox_deps="VideoToolbox_VideoToolbox_h pthreads"
2431 videotoolbox_extralibs="-framework CoreFoundation -framework VideoToolbox -framework CoreMedia -framework QuartzCore -framework CoreVideo"
2432 xvmc_deps="X11_extensions_XvMClib_h"
2433
2434 h263_vaapi_hwaccel_deps="vaapi"
2435 h263_vaapi_hwaccel_select="h263_decoder"
2436 h263_videotoolbox_hwaccel_deps="videotoolbox"
2437 h263_videotoolbox_hwaccel_select="h263_decoder"
2438 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2439 h264_d3d11va_hwaccel_deps="d3d11va"
2440 h264_d3d11va_hwaccel_select="h264_decoder"
2441 h264_dxva2_hwaccel_deps="dxva2"
2442 h264_dxva2_hwaccel_select="h264_decoder"
2443 h264_mmal_decoder_deps="mmal"
2444 h264_mmal_hwaccel_deps="mmal"
2445 h264_mmal_decoder_select="h264_decoder"
2446 h264_mmal_encoder_deps="mmal"
2447 h264_qsv_hwaccel_deps="libmfx"
2448 h264_vaapi_hwaccel_deps="vaapi"
2449 h264_vaapi_hwaccel_select="h264_decoder"
2450 h264_vda_decoder_deps="vda"
2451 h264_vda_decoder_select="h264_decoder"
2452 h264_vda_hwaccel_deps="vda"
2453 h264_vda_hwaccel_select="h264_decoder"
2454 h264_vda_old_hwaccel_deps="vda"
2455 h264_vda_old_hwaccel_select="h264_decoder"
2456 h264_vdpau_decoder_deps="vdpau"
2457 h264_vdpau_decoder_select="h264_decoder"
2458 h264_vdpau_hwaccel_deps="vdpau"
2459 h264_vdpau_hwaccel_select="h264_decoder"
2460 h264_videotoolbox_hwaccel_deps="videotoolbox"
2461 h264_videotoolbox_hwaccel_select="h264_decoder"
2462 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2463 hevc_d3d11va_hwaccel_select="hevc_decoder"
2464 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2465 hevc_dxva2_hwaccel_select="hevc_decoder"
2466 hevc_qsv_hwaccel_deps="libmfx"
2467 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2468 hevc_vaapi_hwaccel_select="hevc_decoder"
2469 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2470 hevc_vdpau_hwaccel_select="hevc_decoder"
2471 mpeg_vdpau_decoder_deps="vdpau"
2472 mpeg_vdpau_decoder_select="mpeg2video_decoder"
2473 mpeg_xvmc_hwaccel_deps="xvmc"
2474 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2475 mpeg1_vdpau_decoder_deps="vdpau"
2476 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
2477 mpeg1_vdpau_hwaccel_deps="vdpau"
2478 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2479 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2480 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2481 mpeg1_xvmc_hwaccel_deps="xvmc"
2482 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2483 mpeg2_crystalhd_decoder_select="crystalhd"
2484 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2485 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2486 mpeg2_dxva2_hwaccel_deps="dxva2"
2487 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2488 mpeg2_mmal_decoder_deps="mmal"
2489 mpeg2_mmal_hwaccel_deps="mmal"
2490 mpeg2_mmal_decoder_select="mpeg2video_decoder"
2491 mpeg2_qsv_hwaccel_deps="libmfx"
2492 mpeg2_qsv_hwaccel_select="qsvdec_mpeg2"
2493 mpeg2_vaapi_hwaccel_deps="vaapi"
2494 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2495 mpeg2_vdpau_hwaccel_deps="vdpau"
2496 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2497 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2498 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2499 mpeg2_xvmc_hwaccel_deps="xvmc"
2500 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2501 mpeg4_crystalhd_decoder_select="crystalhd"
2502 mpeg4_vaapi_hwaccel_deps="vaapi"
2503 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2504 mpeg4_vdpau_decoder_deps="vdpau"
2505 mpeg4_vdpau_decoder_select="mpeg4_decoder"
2506 mpeg4_vdpau_hwaccel_deps="vdpau"
2507 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2508 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2509 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2510 msmpeg4_crystalhd_decoder_select="crystalhd"
2511 vc1_crystalhd_decoder_select="crystalhd"
2512 vc1_d3d11va_hwaccel_deps="d3d11va"
2513 vc1_d3d11va_hwaccel_select="vc1_decoder"
2514 vc1_dxva2_hwaccel_deps="dxva2"
2515 vc1_dxva2_hwaccel_select="vc1_decoder"
2516 vc1_vaapi_hwaccel_deps="vaapi"
2517 vc1_vaapi_hwaccel_select="vc1_decoder"
2518 vc1_vdpau_decoder_deps="vdpau"
2519 vc1_vdpau_decoder_select="vc1_decoder"
2520 vc1_vdpau_hwaccel_deps="vdpau"
2521 vc1_vdpau_hwaccel_select="vc1_decoder"
2522 vc1_mmal_decoder_deps="mmal"
2523 vc1_mmal_hwaccel_deps="mmal"
2524 vc1_mmal_decoder_select="vc1_decoder"
2525 vc1_qsv_hwaccel_deps="libmfx"
2526 vc1_qsv_hwaccel_select="qsvdec_vc1"
2527 wmv3_crystalhd_decoder_select="crystalhd"
2528 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2529 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2530 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2531 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
2532 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2533
2534 # parsers
2535 h264_parser_select="h264_decoder"
2536 hevc_parser_select="golomb"
2537 mpegvideo_parser_select="mpegvideo"
2538 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
2539 vc1_parser_select="mpegvideo startcode vc1_decoder"
2540
2541 # bitstream_filters
2542 mjpeg2jpeg_bsf_select="jpegtables"
2543
2544 # external libraries
2545 chromaprint_muxer_deps="chromaprint"
2546 libaacplus_encoder_deps="libaacplus"
2547 libcelt_decoder_deps="libcelt"
2548 libdcadec_decoder_deps="libdcadec"
2549 libfaac_encoder_deps="libfaac"
2550 libfaac_encoder_select="audio_frame_queue"
2551 libfdk_aac_decoder_deps="libfdk_aac"
2552 libfdk_aac_encoder_deps="libfdk_aac"
2553 libfdk_aac_encoder_select="audio_frame_queue"
2554 libgme_demuxer_deps="libgme"
2555 libgsm_decoder_deps="libgsm"
2556 libgsm_encoder_deps="libgsm"
2557 libgsm_ms_decoder_deps="libgsm"
2558 libgsm_ms_encoder_deps="libgsm"
2559 libilbc_decoder_deps="libilbc"
2560 libilbc_encoder_deps="libilbc"
2561 libkvazaar_encoder_deps="libkvazaar"
2562 libmodplug_demuxer_deps="libmodplug"
2563 libmp3lame_encoder_deps="libmp3lame"
2564 libmp3lame_encoder_select="audio_frame_queue"
2565 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2566 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2567 libopencore_amrnb_encoder_select="audio_frame_queue"
2568 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2569 libopenh264_encoder_deps="libopenh264"
2570 libopenjpeg_decoder_deps="libopenjpeg"
2571 libopenjpeg_encoder_deps="libopenjpeg"
2572 libopus_decoder_deps="libopus"
2573 libopus_encoder_deps="libopus"
2574 libopus_encoder_select="audio_frame_queue"
2575 libquvi_demuxer_deps="libquvi"
2576 libschroedinger_decoder_deps="libschroedinger"
2577 libschroedinger_encoder_deps="libschroedinger"
2578 libshine_encoder_deps="libshine"
2579 libshine_encoder_select="audio_frame_queue"
2580 libspeex_decoder_deps="libspeex"
2581 libspeex_encoder_deps="libspeex"
2582 libspeex_encoder_select="audio_frame_queue"
2583 libstagefright_h264_decoder_deps="libstagefright_h264"
2584 libtheora_encoder_deps="libtheora"
2585 libtwolame_encoder_deps="libtwolame"
2586 libvo_aacenc_encoder_deps="libvo_aacenc"
2587 libvo_aacenc_encoder_select="audio_frame_queue"
2588 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2589 libvorbis_decoder_deps="libvorbis"
2590 libvorbis_encoder_deps="libvorbis"
2591 libvorbis_encoder_select="audio_frame_queue"
2592 libvpx_vp8_decoder_deps="libvpx"
2593 libvpx_vp8_encoder_deps="libvpx"
2594 libvpx_vp9_decoder_deps="libvpx"
2595 libvpx_vp9_encoder_deps="libvpx"
2596 libwavpack_encoder_deps="libwavpack"
2597 libwebp_encoder_deps="libwebp"
2598 libwebp_anim_encoder_deps="libwebp"
2599 libx262_encoder_deps="libx262"
2600 libx264_encoder_deps="libx264"
2601 libx264rgb_encoder_deps="libx264"
2602 libx264rgb_encoder_select="libx264_encoder"
2603 libx265_encoder_deps="libx265"
2604 libxavs_encoder_deps="libxavs"
2605 libxvid_encoder_deps="libxvid"
2606 libutvideo_decoder_deps="libutvideo"
2607 libutvideo_encoder_deps="libutvideo"
2608 libzvbi_teletext_decoder_deps="libzvbi"
2609 nvenc_encoder_deps="nvenc"
2610 nvenc_h264_encoder_deps="nvenc"
2611 nvenc_hevc_encoder_deps="nvenc"
2612
2613 # demuxers / muxers
2614 ac3_demuxer_select="ac3_parser"
2615 asf_demuxer_select="riffdec"
2616 asf_o_demuxer_select="riffdec"
2617 asf_muxer_select="riffenc"
2618 asf_stream_muxer_select="asf_muxer"
2619 avi_demuxer_select="riffdec exif"
2620 avi_muxer_select="riffenc"
2621 avisynth_demuxer_deps="avisynth"
2622 avisynth_demuxer_select="riffdec"
2623 caf_demuxer_select="riffdec"
2624 dash_muxer_select="mp4_muxer"
2625 dirac_demuxer_select="dirac_parser"
2626 dts_demuxer_select="dca_parser"
2627 dtshd_demuxer_select="dca_parser"
2628 dv_demuxer_select="dvprofile"
2629 dv_muxer_select="dvprofile"
2630 dxa_demuxer_select="riffdec"
2631 eac3_demuxer_select="ac3_parser"
2632 f4v_muxer_select="mov_muxer"
2633 flac_demuxer_select="flac_parser"
2634 hds_muxer_select="flv_muxer"
2635 hls_muxer_select="mpegts_muxer"
2636 image2_alias_pix_demuxer_select="image2_demuxer"
2637 image2_brender_pix_demuxer_select="image2_demuxer"
2638 ipod_muxer_select="mov_muxer"
2639 ismv_muxer_select="mov_muxer"
2640 libnut_demuxer_deps="libnut"
2641 libnut_muxer_deps="libnut"
2642 matroska_audio_muxer_select="matroska_muxer"
2643 matroska_demuxer_select="riffdec"
2644 matroska_demuxer_suggest="bzlib lzo zlib"
2645 matroska_muxer_select="riffenc"
2646 mmf_muxer_select="riffenc"
2647 mov_demuxer_select="riffdec"
2648 mov_demuxer_suggest="zlib"
2649 mov_muxer_select="riffenc rtpenc_chain"
2650 mp3_demuxer_select="mpegaudio_parser"
2651 mp4_muxer_select="mov_muxer"
2652 mpegts_muxer_select="adts_muxer latm_muxer"
2653 mpegtsraw_demuxer_select="mpegts_demuxer"
2654 mxf_d10_muxer_select="mxf_muxer"
2655 mxf_opatom_muxer_select="mxf_muxer"
2656 nut_muxer_select="riffenc"
2657 nuv_demuxer_select="riffdec"
2658 oga_muxer_select="ogg_muxer"
2659 ogg_demuxer_select="golomb"
2660 opus_muxer_select="ogg_muxer"
2661 psp_muxer_select="mov_muxer"
2662 rtp_demuxer_select="sdp_demuxer"
2663 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol"
2664 rtsp_demuxer_select="http_protocol rtpdec"
2665 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2666 sap_demuxer_select="sdp_demuxer"
2667 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2668 sdp_demuxer_select="rtpdec"
2669 smoothstreaming_muxer_select="ismv_muxer"
2670 spdif_muxer_select="aac_parser"
2671 spx_muxer_select="ogg_muxer"
2672 tak_demuxer_select="tak_parser"
2673 tg2_muxer_select="mov_muxer"
2674 tgp_muxer_select="mov_muxer"
2675 vobsub_demuxer_select="mpegps_demuxer"
2676 w64_demuxer_select="wav_demuxer"
2677 w64_muxer_select="wav_muxer"
2678 wav_demuxer_select="riffdec"
2679 wav_muxer_select="riffenc"
2680 webm_muxer_select="riffenc"
2681 wtv_demuxer_select="riffdec"
2682 wtv_muxer_select="riffenc"
2683 xmv_demuxer_select="riffdec"
2684 xwma_demuxer_select="riffdec"
2685
2686 # indevs / outdevs
2687 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2688 alsa_outdev_deps="alsa_asoundlib_h"
2689 avfoundation_indev_extralibs="-framework CoreVideo -framework Foundation -framework AVFoundation -framework CoreMedia"
2690 avfoundation_indev_select="avfoundation"
2691 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2692 caca_outdev_deps="libcaca"
2693 decklink_outdev_deps="decklink pthreads"
2694 decklink_outdev_extralibs="-lstdc++"
2695 decklink_indev_deps="decklink pthreads"
2696 decklink_indev_extralibs="-lstdc++"
2697 dshow_indev_deps="IBaseFilter"
2698 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
2699 dv1394_indev_deps="dv1394"
2700 dv1394_indev_select="dv_demuxer"
2701 fbdev_indev_deps="linux_fb_h"
2702 fbdev_outdev_deps="linux_fb_h"
2703 gdigrab_indev_deps="CreateDIBSection"
2704 gdigrab_indev_extralibs="-lgdi32"
2705 gdigrab_indev_select="bmp_decoder"
2706 iec61883_indev_deps="libiec61883"
2707 jack_indev_deps="jack_jack_h sem_timedwait"
2708 lavfi_indev_deps="avfilter"
2709 libcdio_indev_deps="libcdio"
2710 libdc1394_indev_deps="libdc1394"
2711 libv4l2_indev_deps="libv4l2"
2712 openal_indev_deps="openal"
2713 opengl_outdev_deps="opengl"
2714 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2715 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2716 pulse_indev_deps="libpulse"
2717 pulse_outdev_deps="libpulse"
2718 qtkit_indev_extralibs="-framework QTKit -framework Foundation -framework QuartzCore"
2719 qtkit_indev_select="qtkit"
2720 sdl_outdev_deps="sdl"
2721 sndio_indev_deps="sndio_h"
2722 sndio_outdev_deps="sndio_h"
2723 v4l_indev_deps="linux_videodev_h"
2724 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2725 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
2726 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2727 vfwcap_indev_extralibs="-lavicap32"
2728 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
2729 xv_outdev_extralibs="-lXv -lX11 -lXext"
2730 x11grab_indev_deps="x11grab"
2731 x11grab_xcb_indev_deps="libxcb"
2732
2733 # protocols
2734 async_protocol_deps="threads"
2735 bluray_protocol_deps="libbluray"
2736 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2737 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
2738 ffrtmpcrypt_protocol_select="tcp_protocol"
2739 ffrtmphttp_protocol_deps="!librtmp_protocol"
2740 ffrtmphttp_protocol_select="http_protocol"
2741 ftp_protocol_select="tcp_protocol"
2742 gopher_protocol_select="network"
2743 http_protocol_select="tcp_protocol"
2744 httpproxy_protocol_select="tcp_protocol"
2745 https_protocol_select="tls_protocol"
2746 icecast_protocol_select="http_protocol"
2747 librtmp_protocol_deps="librtmp"
2748 librtmpe_protocol_deps="librtmp"
2749 librtmps_protocol_deps="librtmp"
2750 librtmpt_protocol_deps="librtmp"
2751 librtmpte_protocol_deps="librtmp"
2752 libsmbclient_protocol_deps="libsmbclient gplv3"
2753 libssh_protocol_deps="libssh"
2754 mmsh_protocol_select="http_protocol"
2755 mmst_protocol_select="network"
2756 rtmp_protocol_deps="!librtmp_protocol"
2757 rtmp_protocol_select="tcp_protocol"
2758 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2759 rtmps_protocol_deps="!librtmp_protocol"
2760 rtmps_protocol_select="tls_protocol"
2761 rtmpt_protocol_select="ffrtmphttp_protocol"
2762 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2763 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2764 rtp_protocol_select="udp_protocol"
2765 sctp_protocol_deps="struct_sctp_event_subscribe"
2766 sctp_protocol_select="network"
2767 srtp_protocol_select="rtp_protocol"
2768 tcp_protocol_select="network"
2769 tls_gnutls_protocol_deps="gnutls !tls_schannel_protocol !tls_securetransport_protocol"
2770 tls_gnutls_protocol_select="tcp_protocol"
2771 tls_openssl_protocol_deps="openssl !tls_schannel_protocol !tls_securetransport_protocol !tls_gnutls_protocol"
2772 tls_openssl_protocol_select="tcp_protocol"
2773 tls_schannel_protocol_deps="schannel"
2774 tls_schannel_protocol_select="tcp_protocol"
2775 tls_securetransport_protocol_deps="securetransport"
2776 tls_securetransport_protocol_select="tcp_protocol"
2777 tls_protocol_deps_any="tls_schannel_protocol tls_securetransport_protocol tls_gnutls_protocol tls_openssl_protocol"
2778 udp_protocol_select="network"
2779 udplite_protocol_select="network"
2780 unix_protocol_deps="sys_un_h"
2781 unix_protocol_select="network"
2782
2783 # filters
2784 amovie_filter_deps="avcodec avformat"
2785 aresample_filter_deps="swresample"
2786 ass_filter_deps="libass"
2787 asyncts_filter_deps="avresample"
2788 atempo_filter_deps="avcodec"
2789 atempo_filter_select="rdft"
2790 azmq_filter_deps="libzmq"
2791 blackframe_filter_deps="gpl"
2792 boxblur_filter_deps="gpl"
2793 bs2b_filter_deps="libbs2b"
2794 colormatrix_filter_deps="gpl"
2795 cover_rect_filter_deps="avcodec avformat gpl"
2796 cropdetect_filter_deps="gpl"
2797 delogo_filter_deps="gpl"
2798 deshake_filter_select="pixelutils"
2799 drawtext_filter_deps="libfreetype"
2800 dynaudnorm_filter_deps="copysign erf"
2801 ebur128_filter_deps="gpl"
2802 eq_filter_deps="gpl"
2803 fftfilt_filter_deps="avcodec"
2804 fftfilt_filter_select="rdft"
2805 flite_filter_deps="libflite"
2806 find_rect_filter_deps="avcodec avformat gpl"
2807 frei0r_filter_deps="frei0r dlopen"
2808 frei0r_src_filter_deps="frei0r dlopen"
2809 fspp_filter_deps="gpl"
2810 geq_filter_deps="gpl"
2811 histeq_filter_deps="gpl"
2812 hqdn3d_filter_deps="gpl"
2813 interlace_filter_deps="gpl"
2814 kerndeint_filter_deps="gpl"
2815 ladspa_filter_deps="ladspa dlopen"
2816 mcdeint_filter_deps="avcodec gpl"
2817 movie_filter_deps="avcodec avformat"
2818 mpdecimate_filter_deps="gpl"
2819 mpdecimate_filter_select="pixelutils"
2820 mptestsrc_filter_deps="gpl"
2821 negate_filter_deps="lut_filter"
2822 perspective_filter_deps="gpl"
2823 pp7_filter_deps="gpl"
2824 ocr_filter_deps="libtesseract"
2825 ocv_filter_deps="libopencv"
2826 owdenoise_filter_deps="gpl"
2827 pan_filter_deps="swresample"
2828 phase_filter_deps="gpl"
2829 pp_filter_deps="gpl postproc"
2830 pullup_filter_deps="gpl"
2831 removelogo_filter_deps="avcodec avformat swscale"
2832 repeatfields_filter_deps="gpl"
2833 resample_filter_deps="avresample"
2834 rubberband_filter_deps="librubberband"
2835 sab_filter_deps="gpl swscale"
2836 scale_filter_deps="swscale"
2837 scale2ref_filter_deps="swscale"
2838 select_filter_select="pixelutils"
2839 smartblur_filter_deps="gpl swscale"
2840 showcqt_filter_deps="avcodec avformat swscale"
2841 showcqt_filter_select="fft"
2842 showfreqs_filter_deps="avcodec"
2843 showfreqs_filter_select="fft"
2844 showspectrum_filter_deps="avcodec"
2845 showspectrum_filter_select="rdft"
2846 spp_filter_deps="gpl avcodec"
2847 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
2848 stereo3d_filter_deps="gpl"
2849 subtitles_filter_deps="avformat avcodec libass"
2850 super2xsai_filter_deps="gpl"
2851 tinterlace_filter_deps="gpl"
2852 vidstabdetect_filter_deps="libvidstab"
2853 vidstabtransform_filter_deps="libvidstab"
2854 pixfmts_super2xsai_test_deps="super2xsai_filter"
2855 tinterlace_merge_test_deps="tinterlace_filter"
2856 tinterlace_pad_test_deps="tinterlace_filter"
2857 uspp_filter_deps="gpl avcodec"
2858 zmq_filter_deps="libzmq"
2859 zoompan_filter_deps="swscale"
2860 zscale_filter_deps="libzimg"
2861
2862 # examples
2863 avio_reading="avformat avcodec avutil"
2864 avio_dir_cmd="avformat avutil"
2865 avcodec_example_deps="avcodec avutil"
2866 decoding_encoding_example_deps="avcodec avformat avutil"
2867 demuxing_decoding_example_deps="avcodec avformat avutil"
2868 extract_mvs_example_deps="avcodec avformat avutil"
2869 filter_audio_example_deps="avfilter avutil"
2870 filtering_audio_example_deps="avfilter avcodec avformat avutil"
2871 filtering_video_example_deps="avfilter avcodec avformat avutil"
2872 metadata_example_deps="avformat avutil"
2873 muxing_example_deps="avcodec avformat avutil swscale"
2874 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder vaapi_x11"
2875 remuxing_example_deps="avcodec avformat avutil"
2876 resampling_audio_example_deps="avutil swresample"
2877 scaling_video_example_deps="avutil swscale"
2878 transcode_aac_example_deps="avcodec avformat swresample"
2879 transcoding_example_deps="avfilter avcodec avformat avutil"
2880
2881 # libraries, in linking order
2882 avcodec_deps="avutil"
2883 avdevice_deps="avformat avcodec avutil"
2884 avfilter_deps="avutil"
2885 avformat_deps="avcodec avutil"
2886 avresample_deps="avutil"
2887 postproc_deps="avutil gpl"
2888 swresample_deps="avutil"
2889 swscale_deps="avutil"
2890
2891 # programs
2892 ffmpeg_deps="avcodec avfilter avformat swresample"
2893 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
2894                null_filter
2895                setpts_filter trim_filter"
2896 ffplay_deps="avcodec avformat swscale swresample sdl"
2897 ffplay_libs='$sdl_libs'
2898 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
2899 ffprobe_deps="avcodec avformat"
2900 ffserver_deps="avformat fork sarestart"
2901 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
2902
2903 # documentation
2904 podpages_deps="perl"
2905 manpages_deps="perl pod2man"
2906 htmlpages_deps="perl"
2907 htmlpages_deps_any="makeinfo_html texi2html"
2908 txtpages_deps="perl makeinfo"
2909 doc_deps_any="manpages htmlpages podpages txtpages"
2910
2911 # default parameters
2912
2913 logfile="config.log"
2914
2915 # installation paths
2916 prefix_default="/usr/local"
2917 bindir_default='${prefix}/bin'
2918 datadir_default='${prefix}/share/ffmpeg'
2919 docdir_default='${prefix}/share/doc/ffmpeg'
2920 incdir_default='${prefix}/include'
2921 libdir_default='${prefix}/lib'
2922 mandir_default='${prefix}/share/man'
2923
2924 # toolchain
2925 ar_default="ar"
2926 cc_default="gcc"
2927 cxx_default="g++"
2928 host_cc_default="gcc"
2929 cp_f="cp -f"
2930 doxygen_default="doxygen"
2931 install="install"
2932 ln_s="ln -s -f"
2933 nm_default="nm -g"
2934 objformat="elf"
2935 pkg_config_default=pkg-config
2936 ranlib_default="ranlib"
2937 strip_default="strip"
2938 yasmexe_default="yasm"
2939 windres_default="windres"
2940
2941 # OS
2942 target_os_default=$(tolower $(uname -s))
2943 host_os=$target_os_default
2944
2945 # machine
2946 if test "$target_os_default" = aix; then
2947     arch_default=$(uname -p)
2948     strip_default="strip -X32_64"
2949 else
2950     arch_default=$(uname -m)
2951 fi
2952 cpu="generic"
2953 intrinsics="none"
2954
2955 # configurable options
2956 enable $PROGRAM_LIST
2957 enable $DOCUMENT_LIST
2958 enable $EXAMPLE_LIST
2959 enable $(filter_out avresample $LIBRARY_LIST)
2960 enable stripping
2961
2962 enable asm
2963 enable debug
2964 enable doc
2965 enable faan faandct faanidct
2966 enable optimizations
2967 enable runtime_cpudetect
2968 enable safe_bitstream_reader
2969 enable static
2970 enable swscale_alpha
2971 enable valgrind_backtrace
2972
2973 sws_max_filter_size_default=256
2974 set_default sws_max_filter_size
2975
2976 # Enable hwaccels by default.
2977 enable d3d11va dxva2 vaapi vda vdpau videotoolbox xvmc
2978 enable xlib
2979
2980 # build settings
2981 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2982 LIBPREF="lib"
2983 LIBSUF=".a"
2984 FULLNAME='$(NAME)$(BUILDSUF)'
2985 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
2986 SLIBPREF="lib"
2987 SLIBSUF=".so"
2988 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
2989 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2990 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2991 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2992 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2993 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2994
2995 asflags_filter=echo
2996 cflags_filter=echo
2997 ldflags_filter=echo
2998
2999 AS_C='-c'
3000 AS_O='-o $@'
3001 CC_C='-c'
3002 CC_E='-E -o $@'
3003 CC_O='-o $@'
3004 CXX_C='-c'
3005 CXX_O='-o $@'
3006 LD_O='-o $@'
3007 LD_LIB='-l%'
3008 LD_PATH='-L'
3009 HOSTCC_C='-c'
3010 HOSTCC_E='-E -o $@'
3011 HOSTCC_O='-o $@'
3012 HOSTLD_O='-o $@'
3013
3014 host_libs='-lm'
3015 host_cflags_filter=echo
3016 host_ldflags_filter=echo
3017
3018 target_path='$(CURDIR)'
3019
3020 # since the object filename is not given with the -MM flag, the compiler
3021 # is only able to print the basename, and we must add the path ourselves
3022 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3023 DEPFLAGS='-MM'
3024
3025 # find source path
3026 if test -f configure; then
3027     source_path=.
3028 else
3029     source_path=$(cd $(dirname "$0"); pwd)
3030     case "$source_path" in
3031         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3032     esac
3033     test -e "$source_path/config.h" &&
3034         die "Out of tree builds are impossible with config.h in source dir."
3035 fi
3036
3037 for v in "$@"; do
3038     r=${v#*=}
3039     l=${v%"$r"}
3040     r=$(sh_quote "$r")
3041     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3042 done
3043
3044 find_things(){
3045     thing=$1
3046     pattern=$2
3047     file=$source_path/$3
3048     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
3049 }
3050
3051 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
3052 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
3053 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
3054 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
3055 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
3056 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
3057 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
3058 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
3059 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
3060 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
3061 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
3062
3063 ALL_COMPONENTS="
3064     $BSF_LIST
3065     $DECODER_LIST
3066     $DEMUXER_LIST
3067     $ENCODER_LIST
3068     $FILTER_LIST
3069     $HWACCEL_LIST
3070     $INDEV_LIST
3071     $MUXER_LIST
3072     $OUTDEV_LIST
3073     $PARSER_LIST
3074     $PROTOCOL_LIST
3075 "
3076
3077 for n in $COMPONENT_LIST; do
3078     v=$(toupper ${n%s})_LIST
3079     eval enable \$$v
3080     eval ${n}_if_any="\$$v"
3081 done
3082
3083 enable $ARCH_EXT_LIST
3084
3085 die_unknown(){
3086     echo "Unknown option \"$1\"."
3087     echo "See $0 --help for available options."
3088     exit 1
3089 }
3090
3091 print_in_columns() {
3092     cols=$(expr $ncols / 24)
3093     cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
3094 }
3095
3096 show_list() {
3097     suffix=_$1
3098     shift
3099     echo $* | sed s/$suffix//g | print_in_columns
3100     exit 0
3101 }
3102
3103 rand_list(){
3104     IFS=', '
3105     set -- $*
3106     unset IFS
3107     for thing; do
3108         comp=${thing%:*}
3109         prob=${thing#$comp}
3110         prob=${prob#:}
3111         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3112         echo "prob ${prob:-0.5}"
3113         printf '%s\n' $comp
3114     done
3115 }
3116
3117 do_random(){
3118     action=$1
3119     shift
3120     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3121     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3122 }
3123
3124 for opt do
3125     optval="${opt#*=}"
3126     case "$opt" in
3127         --extra-ldflags=*)
3128             add_ldflags $optval
3129         ;;
3130         --extra-ldexeflags=*)
3131             add_ldexeflags $optval
3132         ;;
3133         --extra-ldlibflags=*)
3134             add_ldlibflags $optval
3135         ;;
3136         --extra-libs=*)
3137             add_extralibs $optval
3138         ;;
3139         --disable-devices)
3140             disable $INDEV_LIST $OUTDEV_LIST
3141         ;;
3142         --enable-debug=*)
3143             debuglevel="$optval"
3144         ;;
3145         --disable-programs)
3146             disable $PROGRAM_LIST
3147         ;;
3148         --disable-everything)
3149             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3150         ;;
3151         --disable-all)
3152             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3153             disable $LIBRARY_LIST $PROGRAM_LIST doc
3154             enable avutil
3155         ;;
3156         --enable-random|--disable-random)
3157             action=${opt%%-random}
3158             do_random ${action#--} $COMPONENT_LIST
3159         ;;
3160         --enable-random=*|--disable-random=*)
3161             action=${opt%%-random=*}
3162             do_random ${action#--} $optval
3163         ;;
3164         --enable-*=*|--disable-*=*)
3165             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3166             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3167             eval list=\$$(toupper $thing)_LIST
3168             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3169             list=$(filter "$name" $list)
3170             [ "$list" = "" ] && warn "Option $opt did not match anything"
3171             $action $list
3172         ;;
3173         --enable-?*|--disable-?*)
3174             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3175             if is_in $option $COMPONENT_LIST; then
3176                 test $action = disable && action=unset
3177                 eval $action \$$(toupper ${option%s})_LIST
3178             elif is_in $option $CMDLINE_SELECT; then
3179                 $action $option
3180             else
3181                 die_unknown $opt
3182             fi
3183         ;;
3184         --list-*)
3185             NAME="${opt#--list-}"
3186             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3187             NAME=${NAME%s}
3188             eval show_list $NAME \$$(toupper $NAME)_LIST
3189         ;;
3190         --help|-h) show_help
3191         ;;
3192         --fatal-warnings) enable fatal_warnings
3193         ;;
3194         *)
3195             optname="${opt%%=*}"
3196             optname="${optname#--}"
3197             optname=$(echo "$optname" | sed 's/-/_/g')
3198             if is_in $optname $CMDLINE_SET; then
3199                 eval $optname='$optval'
3200             elif is_in $optname $CMDLINE_APPEND; then
3201                 append $optname "$optval"
3202             else
3203                 die_unknown $opt
3204             fi
3205         ;;
3206     esac
3207 done
3208
3209 for e in $env; do
3210     eval "export $e"
3211 done
3212
3213 disabled logging && logfile=/dev/null
3214
3215 # Disable all the library-specific components if the library itself
3216 # is disabled, see AVCODEC_LIST and following _LIST variables.
3217
3218 disable_components(){
3219     disabled ${1} && disable $(
3220         eval components="\$$(toupper ${1})_COMPONENTS"
3221         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
3222     )
3223 }
3224
3225 map 'disable_components $v' $LIBRARY_LIST
3226
3227 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
3228 set >> $logfile
3229
3230 test -n "$valgrind" && toolchain="valgrind-memcheck"
3231
3232 case "$toolchain" in
3233     clang-asan)
3234         cc_default="clang"
3235         add_cflags  -fsanitize=address
3236         add_ldflags -fsanitize=address
3237     ;;
3238     clang-tsan)
3239         cc_default="clang"
3240         add_cflags  -fsanitize=thread -pie
3241         add_ldflags -fsanitize=thread -pie
3242     ;;
3243     clang-usan)
3244         cc_default="clang"
3245         add_cflags  -fsanitize=undefined
3246         add_ldflags -fsanitize=undefined
3247     ;;
3248     gcc-asan)
3249         cc_default="gcc"
3250         add_cflags  -fsanitize=address
3251         add_ldflags -fsanitize=address
3252     ;;
3253     gcc-tsan)
3254         cc_default="gcc"
3255         add_cflags  -fsanitize=thread -pie -fPIC
3256         add_ldflags -fsanitize=thread -pie -fPIC
3257     ;;
3258     gcc-usan)
3259         cc_default="gcc"
3260         add_cflags  -fsanitize=undefined
3261         add_ldflags -fsanitize=undefined
3262     ;;
3263     valgrind-massif)
3264         target_exec_default=${valgrind:-"valgrind"}
3265         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"
3266     ;;
3267     valgrind-memcheck)
3268         target_exec_default=${valgrind:-"valgrind"}
3269         target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3270     ;;
3271     msvc)
3272         # Check whether the current MSVC version needs the C99 converter.
3273         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3274         # support enough of C99 to build ffmpeg. Default to the new
3275         # behaviour if the regexp was unable to match anything, since this
3276         # successfully parses the version number of existing supported
3277         # versions that require the converter (MSVC 2010 and 2012).
3278         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3279         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3280             cc_default="cl"
3281         else
3282             cc_default="c99wrap cl"
3283         fi
3284         ld_default="$source_path/compat/windows/mslink"
3285         nm_default="dumpbin -symbols"
3286         ar_default="lib"
3287         case "$arch" in
3288         arm*)
3289             as_default="armasm"
3290             ;;
3291         esac
3292         target_os_default="win32"
3293         # Use a relative path for TMPDIR. This makes sure all the
3294         # ffconf temp files are written with a relative path, avoiding
3295         # issues with msys/win32 path conversion for MSVC parameters
3296         # such as -Fo<file> or -out:<file>.
3297         TMPDIR=.
3298     ;;
3299     icl)
3300         cc_default="icl"
3301         ld_default="xilink"
3302         nm_default="dumpbin -symbols"
3303         ar_default="xilib"
3304         target_os_default="win32"
3305         TMPDIR=.
3306     ;;
3307     gcov)
3308         add_cflags  -fprofile-arcs -ftest-coverage
3309         add_ldflags -fprofile-arcs -ftest-coverage
3310     ;;
3311     hardened)
3312         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3313         add_cflags   -fno-strict-overflow -fstack-protector-all
3314         add_ldflags  -Wl,-z,relro -Wl,-z,now
3315     ;;
3316     ?*)
3317         die "Unknown toolchain $toolchain"
3318     ;;
3319 esac
3320
3321 test -n "$cross_prefix" && enable cross_compile
3322
3323 if enabled cross_compile; then
3324     test -n "$arch" && test -n "$target_os" ||
3325         die "Must specify target arch and OS when cross-compiling"
3326 fi
3327
3328 ar_default="${cross_prefix}${ar_default}"
3329 cc_default="${cross_prefix}${cc_default}"
3330 cxx_default="${cross_prefix}${cxx_default}"
3331 nm_default="${cross_prefix}${nm_default}"
3332 pkg_config_default="${cross_prefix}${pkg_config_default}"
3333 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
3334     ranlib_default="${cross_prefix}${ranlib_default} -D"
3335 else
3336     ranlib_default="${cross_prefix}${ranlib_default}"
3337 fi
3338 strip_default="${cross_prefix}${strip_default}"
3339 windres_default="${cross_prefix}${windres_default}"
3340
3341 sysinclude_default="${sysroot}/usr/include"
3342
3343 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3344     target_exec target_os yasmexe
3345 enabled cross_compile || host_cc_default=$cc
3346 set_default host_cc
3347
3348 pkg_config_fail_message=""
3349 if ! $pkg_config --version >/dev/null 2>&1; then
3350     warn "$pkg_config not found, library detection may fail."
3351     pkg_config=false
3352 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
3353     pkg_config_fail_message="
3354 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
3355 fi
3356
3357 if test $doxygen != $doxygen_default && \
3358   ! $doxygen --version >/dev/null 2>&1; then
3359     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3360 fi
3361
3362 exesuf() {
3363     case $1 in
3364         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3365     esac
3366 }
3367
3368 EXESUF=$(exesuf $target_os)
3369 HOSTEXESUF=$(exesuf $host_os)
3370
3371 # set temporary file name
3372 : ${TMPDIR:=$TEMPDIR}
3373 : ${TMPDIR:=$TMP}
3374 : ${TMPDIR:=/tmp}
3375
3376 if [ -n "$tempprefix" ] ; then
3377     mktemp(){
3378         echo $tempprefix.${HOSTNAME}.${UID}
3379     }
3380 elif ! check_cmd mktemp -u XXXXXX; then
3381     # simple replacement for missing mktemp
3382     # NOT SAFE FOR GENERAL USE
3383     mktemp(){
3384         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3385     }
3386 fi
3387
3388 tmpfile(){
3389     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
3390         (set -C; exec > $tmp) 2>/dev/null ||
3391         die "Unable to create temporary file in $TMPDIR."
3392     append TMPFILES $tmp
3393     eval $1=$tmp
3394 }
3395
3396 trap 'rm -f -- $TMPFILES' EXIT
3397
3398 tmpfile TMPASM .asm
3399 tmpfile TMPC   .c
3400 tmpfile TMPCPP .cpp
3401 tmpfile TMPE   $EXESUF
3402 tmpfile TMPH   .h
3403 tmpfile TMPM   .m
3404 tmpfile TMPO   .o
3405 tmpfile TMPS   .S
3406 tmpfile TMPSH  .sh
3407 tmpfile TMPV   .ver
3408
3409 unset -f mktemp
3410
3411 chmod +x $TMPE
3412
3413 # make sure we can execute files in $TMPDIR
3414 cat > $TMPSH 2>> $logfile <<EOF
3415 #! /bin/sh
3416 EOF
3417 chmod +x $TMPSH >> $logfile 2>&1
3418 if ! $TMPSH >> $logfile 2>&1; then
3419     cat <<EOF
3420 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3421 variable to another directory and make sure that it is not mounted noexec.
3422 EOF
3423     die "Sanity test failed."
3424 fi
3425
3426 armasm_flags(){
3427     for flag; do
3428         case $flag in
3429             # Filter out MSVC cl.exe options from cflags that shouldn't
3430             # be passed to gas-preprocessor
3431             -M[TD]*)                                            ;;
3432             *)                  echo $flag                      ;;
3433         esac
3434    done
3435 }
3436
3437 ccc_flags(){
3438     for flag; do
3439         case $flag in
3440             -std=c99)           echo -c99                       ;;
3441             -mcpu=*)            echo -arch ${flag#*=}           ;;
3442             -mieee)             echo -ieee                      ;;
3443             -O*|-fast)          echo $flag                      ;;
3444             -fno-math-errno)    echo -assume nomath_errno       ;;
3445             -g)                 echo -g3                        ;;
3446             -Wall)              echo -msg_enable level2         ;;
3447             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
3448             -Wl,*)              echo $flag                      ;;
3449             -f*|-W*)                                            ;;
3450             *)                  echo $flag                      ;;
3451         esac
3452    done
3453 }
3454
3455 cparser_flags(){
3456     for flag; do
3457         case $flag in
3458             -Wno-switch)             echo -Wno-switch-enum ;;
3459             -Wno-format-zero-length) ;;
3460             -Wdisabled-optimization) ;;
3461             -Wno-pointer-sign)       echo -Wno-other ;;
3462             *)                       echo $flag ;;
3463         esac
3464     done
3465 }
3466
3467 msvc_common_flags(){
3468     for flag; do
3469         case $flag in
3470             # In addition to specifying certain flags under the compiler
3471             # specific filters, they must be specified here as well or else the
3472             # generic catch all at the bottom will print the original flag.
3473             -Wall)                ;;
3474             -std=c99)             ;;
3475             # Common flags
3476             -fomit-frame-pointer) ;;
3477             -g)                   echo -Z7 ;;
3478             -fno-math-errno)      ;;
3479             -fno-common)          ;;
3480             -fno-signed-zeros)    ;;
3481             -fPIC)                ;;
3482             -mthumb)              ;;
3483             -march=*)             ;;
3484             -lz)                  echo zlib.lib ;;
3485             -lavifil32)           echo vfw32.lib ;;
3486             -lavicap32)           echo vfw32.lib user32.lib ;;
3487             -l*)                  echo ${flag#-l}.lib ;;
3488             -LARGEADDRESSAWARE)   echo $flag ;;
3489             -L*)                  echo -libpath:${flag#-L} ;;
3490             *)                    echo $flag ;;
3491         esac
3492     done
3493 }
3494
3495 msvc_flags(){
3496     msvc_common_flags "$@"
3497     for flag; do
3498         case $flag in
3499             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3500                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3501                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3502                                        -wd4307 \
3503                                        -wd4273 -wd4554 -wd4701 ;;
3504         esac
3505     done
3506 }
3507
3508 icl_flags(){
3509     msvc_common_flags "$@"
3510     for flag; do
3511         case $flag in
3512             # Despite what Intel's documentation says -Wall, which is supported
3513             # on Windows, does enable remarks so disable them here.
3514             -Wall)                echo $flag -Qdiag-disable:remark ;;
3515             -std=c99)             echo -Qstd=c99 ;;
3516             -flto)                echo -ipo ;;
3517         esac
3518     done
3519 }
3520
3521 icc_flags(){
3522     for flag; do
3523         case $flag in
3524             -flto)                echo -ipo ;;
3525             *)                    echo $flag ;;
3526         esac
3527     done
3528 }
3529
3530 pgi_flags(){
3531     for flag; do
3532         case $flag in
3533             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3534             -fomit-frame-pointer) echo -Mnoframe ;;
3535             -g)                   echo -gopt ;;
3536             *)                    echo $flag ;;
3537         esac
3538     done
3539 }
3540
3541 suncc_flags(){
3542     for flag; do
3543         case $flag in
3544             -march=*|-mcpu=*)
3545                 case "${flag#*=}" in
3546                     native)                   echo -xtarget=native       ;;
3547                     v9|niagara)               echo -xarch=sparc          ;;
3548                     ultrasparc)               echo -xarch=sparcvis       ;;
3549                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3550                     i586|pentium)             echo -xchip=pentium        ;;
3551                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3552                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3553                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3554                     pentium4*)          echo -xtarget=pentium4           ;;
3555                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3556                     *-sse3)             echo -xarch=sse3                 ;;
3557                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3558                     bonnell)                   echo -xarch=ssse3         ;;
3559                     corei7|nehalem)            echo -xtarget=nehalem     ;;
3560                     westmere)                  echo -xtarget=westmere    ;;
3561                     silvermont)                echo -xarch=sse4_2        ;;
3562                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
3563                     core-avx*|ivybridge|haswell|broadwell)
3564                                                echo -xarch=avx           ;;
3565                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
3566                     btver1)                    echo -xarch=amdsse4a      ;;
3567                     btver2|bdver*)             echo -xarch=avx           ;;
3568                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3569                     k8|opteron|athlon64|athlon-fx)
3570                                                echo -xarch=sse2a         ;;
3571                     athlon*)                   echo -xarch=pentium_proa  ;;
3572                 esac
3573                 ;;
3574             -std=c99)             echo -xc99              ;;
3575             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3576             -fPIC)                echo -KPIC -xcode=pic32 ;;
3577             -W*,*)                echo $flag              ;;
3578             -f*-*|-W*|-mimpure-text)                      ;;
3579             -shared)              echo -G                 ;;
3580             *)                    echo $flag              ;;
3581         esac
3582     done
3583 }
3584
3585 tms470_flags(){
3586     for flag; do
3587         case $flag in
3588             -march=*|-mcpu=*)
3589                 case "${flag#*=}" in
3590                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3591                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3592                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3593                     armv6*|arm11*)          echo -mv=6   ;;
3594                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3595                                             echo -mv=5e  ;;
3596                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3597                 esac
3598                 ;;
3599             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3600             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3601             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3602             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3603             -msoft-float)   echo --float_support=vfplib       ;;
3604             -O[0-3]|-mf=*)  echo $flag                        ;;
3605             -g)             echo -g -mn                       ;;
3606             -pds=*)         echo $flag                        ;;
3607             -D*|-I*)        echo $flag                        ;;
3608             --gcc|--abi=*)  echo $flag                        ;;
3609             -me)            echo $flag                        ;;
3610         esac
3611     done
3612 }
3613
3614 probe_cc(){
3615     pfx=$1
3616     _cc=$2
3617     first=$3
3618
3619     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3620     unset _ld_o _ldflags _ld_lib _ld_path
3621     unset _depflags _DEPCMD _DEPFLAGS
3622     _flags_filter=echo
3623
3624     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
3625         true # no-op to avoid reading stdin in following checks
3626     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3627         _type=llvm_gcc
3628         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
3629         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
3630         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3631         _cflags_speed='-O3'
3632         _cflags_size='-Os'
3633     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3634         _type=gcc
3635         gcc_version=$($_cc --version | head -n1)
3636         gcc_basever=$($_cc -dumpversion)
3637         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3638         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3639         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3640         case $gcc_basever in
3641             2*) ;;
3642             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
3643         esac
3644         if [ "$first" = true ]; then
3645             case $gcc_basever in
3646                 4.2*)
3647                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
3648             esac
3649         fi
3650         _cflags_speed='-O3'
3651         _cflags_size='-Os'
3652     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3653         _type=icc
3654         _ident=$($_cc --version | head -n1)
3655         _depflags='-MMD'
3656         _cflags_speed='-O3'
3657         _cflags_size='-Os'
3658         _cflags_noopt='-O1'
3659         _flags_filter=icc_flags
3660     elif $_cc -v 2>&1 | grep -q xlc; then
3661         _type=xlc
3662         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3663         _cflags_speed='-O5'
3664         _cflags_size='-O5 -qcompact'
3665     elif $_cc -V 2>/dev/null | grep -q Compaq; then
3666         _type=ccc
3667         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
3668         _DEPFLAGS='-M'
3669         _cflags_speed='-fast'
3670         _cflags_size='-O1'
3671         _flags_filter=ccc_flags
3672     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
3673         test -d "$sysroot" || die "No valid sysroot specified."
3674         _type=armcc
3675         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
3676         armcc_conf="$PWD/armcc.conf"
3677         $_cc --arm_linux_configure                 \
3678              --arm_linux_config_file="$armcc_conf" \
3679              --configure_sysroot="$sysroot"        \
3680              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
3681              die "Error creating armcc configuration file."
3682         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
3683         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
3684         as_default="${cross_prefix}gcc"
3685         _depflags='-MMD'
3686         _cflags_speed='-O3'
3687         _cflags_size='-Os'
3688     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
3689         _type=tms470
3690         _ident=$($_cc -version | head -n1 | tr -s ' ')
3691         _flags='--gcc --abi=eabi -me'
3692         _cc_e='-ppl -fe=$@'
3693         _cc_o='-fe=$@'
3694         _depflags='-ppa -ppd=$(@:.o=.d)'
3695         _cflags_speed='-O3 -mf=5'
3696         _cflags_size='-O3 -mf=2'
3697         _flags_filter=tms470_flags
3698     elif $_cc -v 2>&1 | grep -q clang; then
3699         _type=clang
3700         _ident=$($_cc --version 2>/dev/null | head -n1)
3701         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3702         _cflags_speed='-O3'
3703         _cflags_size='-Os'
3704     elif $_cc -V 2>&1 | grep -q Sun; then
3705         _type=suncc
3706         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
3707         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3708         _DEPFLAGS='-xM1 -xc99'
3709         _ldflags='-std=c99'
3710         _cflags_speed='-O5'
3711         _cflags_size='-O5 -xspace'
3712         _flags_filter=suncc_flags
3713     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3714         _type=pathscale
3715         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3716         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3717         _cflags_speed='-O2'
3718         _cflags_size='-Os'
3719         _flags_filter='filter_out -Wdisabled-optimization'
3720     elif $_cc -v 2>&1 | grep -q Open64; then
3721         _type=open64
3722         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3723         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3724         _cflags_speed='-O2'
3725         _cflags_size='-Os'
3726         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3727     elif $_cc -V 2>&1 | grep -q Portland; then
3728         _type=pgi
3729         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
3730         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
3731         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
3732         _cflags_size="-O2 -Munroll=c:1 $opt_common"
3733         _cflags_noopt="-O"
3734         _flags_filter=pgi_flags
3735     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
3736         _type=armasm
3737         _ident=$($_cc | head -n1)
3738         # 4509: "This form of conditional instruction is deprecated"
3739         _flags="-nologo -ignore 4509"
3740         _flags_filter=armasm_flags
3741     elif $_cc 2>&1 | grep -q Intel; then
3742         _type=icl
3743         _ident=$($_cc 2>&1 | head -n1)
3744         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3745         # Not only is O3 broken on 13.x+ but it is slower on all previous
3746         # versions (tested) as well.
3747         _cflags_speed="-O2"
3748         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3749         if $_cc 2>&1 | grep -q Linker; then
3750             _ld_o='-out:$@'
3751         else
3752             _ld_o='-Fe$@'
3753         fi
3754         _cc_o='-Fo$@'
3755         _cc_e='-P'
3756         _flags_filter=icl_flags
3757         _ld_lib='lib%.a'
3758         _ld_path='-libpath:'
3759         # -Qdiag-error to make icl error when seeing certain unknown arguments
3760         _flags='-nologo -Qdiag-error:4044,10157'
3761         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
3762         # with MSVC which enables it by default.
3763         _cflags='-D_USE_MATH_DEFINES -Qms0 -Qvec- -Qsimd- -GS -fp:precise'
3764         disable stripping
3765     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
3766         _type=msvc
3767         _ident=$($_cc 2>&1 | head -n1)
3768         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
3769         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
3770         _cflags_speed="-O2"
3771         _cflags_size="-O1"
3772         if $_cc -nologo- 2>&1 | grep -q Linker; then
3773             _ld_o='-out:$@'
3774         else
3775             _ld_o='-Fe$@'
3776         fi
3777         _cc_o='-Fo$@'
3778         _cc_e='-P -Fi$@'
3779         _flags_filter=msvc_flags
3780         _ld_lib='lib%.a'
3781         _ld_path='-libpath:'
3782         _flags='-nologo'
3783         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS'
3784         disable stripping
3785     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3786         _type=cparser
3787         _ident=$($_cc --version | head -n1)
3788         _depflags='-MMD'
3789         _cflags_speed='-O4'
3790         _cflags_size='-O2'
3791         _flags_filter=cparser_flags
3792     fi
3793
3794     eval ${pfx}_type=\$_type
3795     eval ${pfx}_ident=\$_ident
3796 }
3797
3798 set_ccvars(){
3799     eval ${1}_C=\${_cc_c-\${${1}_C}}
3800     eval ${1}_E=\${_cc_e-\${${1}_E}}
3801     eval ${1}_O=\${_cc_o-\${${1}_O}}
3802
3803     if [ -n "$_depflags" ]; then
3804         eval ${1}_DEPFLAGS=\$_depflags
3805     else
3806         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3807         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3808         eval DEP${1}FLAGS=\$_flags
3809     fi
3810 }
3811
3812 probe_cc cc "$cc" "true"
3813 cflags_filter=$_flags_filter
3814 cflags_speed=$_cflags_speed
3815 cflags_size=$_cflags_size
3816 cflags_noopt=$_cflags_noopt
3817 add_cflags $_flags $_cflags
3818 cc_ldflags=$_ldflags
3819 set_ccvars CC
3820
3821 probe_cc hostcc "$host_cc"
3822 host_cflags_filter=$_flags_filter
3823 add_host_cflags  $_flags $_cflags
3824 set_ccvars HOSTCC
3825
3826 test -n "$cc_type" && enable $cc_type ||
3827     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3828
3829 : ${as_default:=$cc}
3830 : ${dep_cc_default:=$cc}
3831 : ${ld_default:=$cc}
3832 : ${host_ld_default:=$host_cc}
3833 set_default ar as dep_cc ld host_ld windres
3834
3835 probe_cc as "$as"
3836 asflags_filter=$_flags_filter
3837 add_asflags $_flags $_cflags
3838 set_ccvars AS
3839
3840 probe_cc ld "$ld"
3841 ldflags_filter=$_flags_filter
3842 add_ldflags $_flags $_ldflags
3843 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3844 LD_O=${_ld_o-$LD_O}
3845 LD_LIB=${_ld_lib-$LD_LIB}
3846 LD_PATH=${_ld_path-$LD_PATH}
3847
3848 probe_cc hostld "$host_ld"
3849 host_ldflags_filter=$_flags_filter
3850 add_host_ldflags $_flags $_ldflags
3851 HOSTLD_O=${_ld_o-$HOSTLD_O}
3852
3853 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3854     probe_cc depcc "$dep_cc"
3855     CCDEP=${_DEPCMD:-$DEPCMD}
3856     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3857     DEPCCFLAGS=$_flags
3858 fi
3859
3860 if $ar 2>&1 | grep -q Microsoft; then
3861     arflags="-nologo"
3862     ar_o='-out:$@'
3863 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3864     arflags="rq"
3865     ar_o='$@'
3866 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3867     arflags='-Xany -r -c'
3868     ar_o='$@'
3869 elif $ar 2>&1 | grep -q "\[D\] "; then
3870     arflags="rcD"
3871     ar_o='$@'
3872 else
3873     arflags="rc"
3874     ar_o='$@'
3875 fi
3876
3877 add_cflags $extra_cflags
3878 add_cxxflags $extra_cxxflags
3879 add_asflags $extra_cflags
3880
3881 if test -n "$sysroot"; then
3882     case "$cc_type" in
3883         gcc|llvm_gcc|clang)
3884             add_cppflags --sysroot="$sysroot"
3885             add_ldflags --sysroot="$sysroot"
3886 # On Darwin --sysroot may be ignored, -isysroot always affects headers and linking
3887             add_cppflags -isysroot "$sysroot"
3888             add_ldflags -isysroot "$sysroot"
3889         ;;
3890         tms470)
3891             add_cppflags -I"$sysinclude"
3892             add_ldflags  --sysroot="$sysroot"
3893         ;;
3894     esac
3895 fi
3896
3897 if test "$cpu" = host; then
3898     enabled cross_compile &&
3899         die "--cpu=host makes no sense when cross-compiling."
3900
3901     case "$cc_type" in
3902         gcc|llvm_gcc)
3903             check_native(){
3904                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3905                 sed -n "/cc1.*$1=/{
3906                             s/.*$1=\\([^ ]*\\).*/\\1/
3907                             p
3908                             q
3909                         }" $TMPE
3910             }
3911             cpu=$(check_native -march || check_native -mcpu)
3912         ;;
3913     esac
3914
3915     test "${cpu:-host}" = host &&
3916         die "--cpu=host not supported with compiler $cc"
3917 fi
3918
3919 # Deal with common $arch aliases
3920 case "$arch" in
3921     aarch64|arm64)
3922         arch="aarch64"
3923     ;;
3924     arm*|iPad*|iPhone*)
3925         arch="arm"
3926     ;;
3927     mips*|IP*)
3928         arch="mips"
3929     ;;
3930     parisc*|hppa*)
3931         arch="parisc"
3932     ;;
3933     "Power Macintosh"|ppc*|powerpc*)
3934         arch="ppc"
3935     ;;
3936     s390|s390x)
3937         arch="s390"
3938     ;;
3939     sh4|sh)
3940         arch="sh4"
3941     ;;
3942     sun4u|sparc*)
3943         arch="sparc"
3944     ;;
3945     tilegx|tile-gx)
3946         arch="tilegx"
3947     ;;
3948     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
3949         arch="x86"
3950     ;;
3951 esac
3952
3953 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3954 enable $arch
3955
3956 # Add processor-specific flags
3957 if enabled aarch64; then
3958
3959     case $cpu in
3960         armv*)
3961             cpuflags="-march=$cpu"
3962         ;;
3963         *)
3964             cpuflags="-mcpu=$cpu"
3965         ;;
3966     esac
3967
3968 elif enabled alpha; then
3969
3970     cpuflags="-mcpu=$cpu"
3971
3972 elif enabled arm; then
3973
3974     check_arm_arch() {
3975         check_cpp_condition stddef.h \
3976             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3977             $cpuflags
3978     }
3979
3980     probe_arm_arch() {
3981         if   check_arm_arch 4;        then echo armv4;
3982         elif check_arm_arch 4T;       then echo armv4t;
3983         elif check_arm_arch 5;        then echo armv5;
3984         elif check_arm_arch 5E;       then echo armv5e;
3985         elif check_arm_arch 5T;       then echo armv5t;
3986         elif check_arm_arch 5TE;      then echo armv5te;
3987         elif check_arm_arch 5TEJ;     then echo armv5te;
3988         elif check_arm_arch 6;        then echo armv6;
3989         elif check_arm_arch 6J;       then echo armv6j;
3990         elif check_arm_arch 6K;       then echo armv6k;
3991         elif check_arm_arch 6Z;       then echo armv6z;
3992         elif check_arm_arch 6ZK;      then echo armv6zk;
3993         elif check_arm_arch 6T2;      then echo armv6t2;
3994         elif check_arm_arch 7;        then echo armv7;
3995         elif check_arm_arch 7A  7_A;  then echo armv7-a;
3996         elif check_arm_arch 7S;       then echo armv7-a;
3997         elif check_arm_arch 7R  7_R;  then echo armv7-r;
3998         elif check_arm_arch 7M  7_M;  then echo armv7-m;
3999         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
4000         elif check_arm_arch 8A  8_A;  then echo armv8-a;
4001         fi
4002     }
4003
4004     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4005
4006     case $cpu in
4007         armv*)
4008             cpuflags="-march=$cpu"
4009             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4010         ;;
4011         *)
4012             cpuflags="-mcpu=$cpu"
4013             case $cpu in
4014                 cortex-a*)                               subarch=armv7a  ;;
4015                 cortex-r*)                               subarch=armv7r  ;;
4016                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4017                 arm11*)                                  subarch=armv6   ;;
4018                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4019                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4020                 *)                             subarch=$(probe_arm_arch) ;;
4021             esac
4022         ;;
4023     esac
4024
4025     case "$subarch" in
4026         armv5t*)    enable fast_clz                ;;
4027         armv[6-8]*)
4028             enable fast_clz
4029             disabled fast_unaligned || enable fast_unaligned
4030             ;;
4031     esac
4032
4033 elif enabled avr32; then
4034
4035     case $cpu in
4036         ap7[02]0[0-2])
4037             subarch="avr32_ap"
4038             cpuflags="-mpart=$cpu"
4039         ;;
4040         ap)
4041             subarch="avr32_ap"
4042             cpuflags="-march=$cpu"
4043         ;;
4044         uc3[ab]*)
4045             subarch="avr32_uc"
4046             cpuflags="-mcpu=$cpu"
4047         ;;
4048         uc)
4049             subarch="avr32_uc"
4050             cpuflags="-march=$cpu"
4051         ;;
4052     esac
4053
4054 elif enabled bfin; then
4055
4056     cpuflags="-mcpu=$cpu"
4057
4058 elif enabled mips; then
4059
4060     cpuflags="-march=$cpu"
4061
4062     case $cpu in
4063         24kc)
4064             disable mips32r5
4065             disable mips64r6
4066             disable mipsfpu
4067             disable mipsdspr1
4068             disable mipsdspr2
4069             disable msa
4070         ;;
4071         24kf*)
4072             disable mips32r5
4073             disable mips64r6
4074             disable mipsdspr1
4075             disable mipsdspr2
4076             disable msa
4077         ;;