Merge commit 'bb0babd7054bed7edfd9f4d6b20cdba864de1830'
[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 [PREFIX/lib]
88   --incdir=DIR             install includes in DIR [PREFIX/include]
89   --mandir=DIR             install man page in DIR [PREFIX/share/man]
90   --enable-rpath           use rpath to allow installing libraries in paths
91                            not part of the dynamic linker search path
92
93 Licensing options:
94   --enable-gpl             allow use of GPL code, the resulting libs
95                            and binaries will be under GPL [no]
96   --enable-version3        upgrade (L)GPL to version 3 [no]
97   --enable-nonfree         allow use of nonfree code, the resulting libs
98                            and binaries will be unredistributable [no]
99
100 Configuration options:
101   --disable-static         do not build static libraries [no]
102   --enable-shared          build shared libraries [no]
103   --enable-small           optimize for size instead of speed
104   --disable-runtime-cpudetect disable detecting cpu capabilities at runtime (smaller binary)
105   --enable-gray            enable full grayscale support (slower color)
106   --disable-swscale-alpha  disable alpha channel support in swscale
107   --disable-all            disable building components, libraries and programs
108   --enable-incompatible-libav-abi enable incompatible Libav fork ABI [no]
109   --enable-raise-major     increase major version numbers in sonames [no]
110
111 Program options:
112   --disable-programs       do not build command line programs
113   --disable-ffmpeg         disable ffmpeg build
114   --disable-ffplay         disable ffplay build
115   --disable-ffprobe        disable ffprobe build
116   --disable-ffserver       disable ffserver build
117
118 Documentation options:
119   --disable-doc            do not build documentation
120   --disable-htmlpages      do not build HTML documentation pages
121   --disable-manpages       do not build man documentation pages
122   --disable-podpages       do not build POD documentation pages
123   --disable-txtpages       do not build text documentation pages
124
125 Component options:
126   --disable-avdevice       disable libavdevice build
127   --disable-avcodec        disable libavcodec build
128   --disable-avformat       disable libavformat build
129   --disable-avutil         disable libavutil build
130   --disable-swresample     disable libswresample build
131   --disable-swscale        disable libswscale build
132   --disable-postproc       disable libpostproc build
133   --disable-avfilter       disable libavfilter build
134   --enable-avresample      enable libavresample build [no]
135   --disable-pthreads       disable pthreads [auto]
136   --disable-w32threads     disable Win32 threads [auto]
137   --disable-os2threads     disable OS/2 threads [auto]
138   --disable-network        disable network support [no]
139   --disable-dct            disable DCT code
140   --disable-dwt            disable DWT code
141   --disable-error-resilience disable error resilience code
142   --disable-lsp            disable LSP code
143   --disable-lzo            disable LZO decoder code
144   --disable-mdct           disable MDCT code
145   --disable-rdft           disable RDFT code
146   --disable-fft            disable FFT code
147
148 Hardware accelerators:
149   --disable-dxva2          disable DXVA2 code [autodetect]
150   --disable-vaapi          disable VAAPI code [autodetect]
151   --disable-vda            disable VDA code [autodetect]
152   --disable-vdpau          disable VDPAU code [autodetect]
153
154 Individual component options:
155   --disable-everything     disable all components listed below
156   --disable-encoder=NAME   disable encoder NAME
157   --enable-encoder=NAME    enable encoder NAME
158   --disable-encoders       disable all encoders
159   --disable-decoder=NAME   disable decoder NAME
160   --enable-decoder=NAME    enable decoder NAME
161   --disable-decoders       disable all decoders
162   --disable-hwaccel=NAME   disable hwaccel NAME
163   --enable-hwaccel=NAME    enable hwaccel NAME
164   --disable-hwaccels       disable all hwaccels
165   --disable-muxer=NAME     disable muxer NAME
166   --enable-muxer=NAME      enable muxer NAME
167   --disable-muxers         disable all muxers
168   --disable-demuxer=NAME   disable demuxer NAME
169   --enable-demuxer=NAME    enable demuxer NAME
170   --disable-demuxers       disable all demuxers
171   --enable-parser=NAME     enable parser NAME
172   --disable-parser=NAME    disable parser NAME
173   --disable-parsers        disable all parsers
174   --enable-bsf=NAME        enable bitstream filter NAME
175   --disable-bsf=NAME       disable bitstream filter NAME
176   --disable-bsfs           disable all bitstream filters
177   --enable-protocol=NAME   enable protocol NAME
178   --disable-protocol=NAME  disable protocol NAME
179   --disable-protocols      disable all protocols
180   --enable-indev=NAME      enable input device NAME
181   --disable-indev=NAME     disable input device NAME
182   --disable-indevs         disable input devices
183   --enable-outdev=NAME     enable output device NAME
184   --disable-outdev=NAME    disable output device NAME
185   --disable-outdevs        disable output devices
186   --disable-devices        disable all devices
187   --enable-filter=NAME     enable filter NAME
188   --disable-filter=NAME    disable filter NAME
189   --disable-filters        disable all filters
190
191 External library support:
192   --enable-avisynth        enable reading of AviSynth script files [no]
193   --disable-bzlib          disable bzlib [autodetect]
194   --enable-fontconfig      enable fontconfig
195   --enable-frei0r          enable frei0r video filtering
196   --enable-gnutls          enable gnutls [no]
197   --disable-iconv          disable iconv [autodetect]
198   --enable-ladspa          enable LADSPA audio filtering
199   --enable-libaacplus      enable AAC+ encoding via libaacplus [no]
200   --enable-libass          enable libass subtitles rendering [no]
201   --enable-libbluray       enable BluRay reading using libbluray [no]
202   --enable-libbs2b         enable bs2b DSP library [no]
203   --enable-libcaca         enable textual display using libcaca
204   --enable-libcelt         enable CELT decoding via libcelt [no]
205   --enable-libcdio         enable audio CD grabbing with libcdio
206   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
207                            and libraw1394 [no]
208   --enable-libfaac         enable AAC encoding via libfaac [no]
209   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
210   --enable-libflite        enable flite (voice synthesis) support via libflite [no]
211   --enable-libfreetype     enable libfreetype [no]
212   --enable-libfribidi      enable libfribidi [no]
213   --enable-libgme          enable Game Music Emu via libgme [no]
214   --enable-libgsm          enable GSM de/encoding via libgsm [no]
215   --enable-libiec61883     enable iec61883 via libiec61883 [no]
216   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
217   --enable-libmodplug      enable ModPlug via libmodplug [no]
218   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
219   --enable-libnut          enable NUT (de)muxing via libnut,
220                            native (de)muxer exists [no]
221   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
222   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
223   --enable-libopencv       enable video filtering via libopencv [no]
224   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
225   --enable-libopus         enable Opus de/encoding via libopus [no]
226   --enable-libpulse        enable Pulseaudio input via libpulse [no]
227   --enable-libquvi         enable quvi input via libquvi [no]
228   --enable-librtmp         enable RTMP[E] support via librtmp [no]
229   --enable-libschroedinger enable Dirac de/encoding via libschroedinger [no]
230   --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
231   --enable-libsmbclient    enable Samba protocol via libsmbclient [no]
232   --enable-libsoxr         enable Include libsoxr resampling [no]
233   --enable-libspeex        enable Speex de/encoding via libspeex [no]
234   --enable-libssh          enable SFTP protocol via libssh [no]
235   --enable-libstagefright-h264  enable H.264 decoding via libstagefright [no]
236   --enable-libtheora       enable Theora encoding via libtheora [no]
237   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
238   --enable-libutvideo      enable Ut Video encoding and decoding via libutvideo [no]
239   --enable-libv4l2         enable libv4l2/v4l-utils [no]
240   --enable-libvidstab      enable video stabilization using vid.stab [no]
241   --enable-libvo-aacenc    enable AAC encoding via libvo-aacenc [no]
242   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
243   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
244                            native implementation exists [no]
245   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
246   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
247   --enable-libwebp         enable WebP encoding via libwebp [no]
248   --enable-libx264         enable H.264 encoding via x264 [no]
249   --enable-libx265         enable HEVC encoding via x265 [no]
250   --enable-libxavs         enable AVS encoding via xavs [no]
251   --enable-libxvid         enable Xvid encoding via xvidcore,
252                            native MPEG-4/Xvid encoder exists [no]
253   --enable-libzmq          enable message passing via libzmq [no]
254   --enable-libzvbi         enable teletext support via libzvbi [no]
255   --enable-decklink        enable Blackmagick DeckLink output [no]
256   --enable-openal          enable OpenAL 1.1 capture support [no]
257   --enable-opencl          enable OpenCL code
258   --enable-opengl          enable OpenGL rendering [no]
259   --enable-openssl         enable openssl [no]
260   --enable-x11grab         enable X11 grabbing [no]
261   --disable-xlib           disable xlib [autodetect]
262   --disable-zlib           disable zlib [autodetect]
263
264 Toolchain options:
265   --arch=ARCH              select architecture [$arch]
266   --cpu=CPU                select the minimum required CPU (affects
267                            instruction selection, may crash on older CPUs)
268   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
269   --progs-suffix=SUFFIX    program name suffix []
270   --enable-cross-compile   assume a cross-compiler is used
271   --sysroot=PATH           root of cross-build tree
272   --sysinclude=PATH        location of cross-build system headers
273   --target-os=OS           compiler targets OS [$target_os]
274   --target-exec=CMD        command to run executables on target
275   --target-path=DIR        path to view of build directory on target
276   --target-samples=DIR     path to samples directory on target
277   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
278   --toolchain=NAME         set tool defaults according to NAME
279   --nm=NM                  use nm tool NM [$nm_default]
280   --ar=AR                  use archive tool AR [$ar_default]
281   --as=AS                  use assembler AS [$as_default]
282   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
283   --yasmexe=EXE            use yasm-compatible assembler EXE [$yasmexe_default]
284   --cc=CC                  use C compiler CC [$cc_default]
285   --cxx=CXX                use C compiler CXX [$cxx_default]
286   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
287   --ld=LD                  use linker LD [$ld_default]
288   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
289   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
290   --ranlib=RANLIB          use ranlib RANLIB [$ranlib_default]
291   --doxygen=DOXYGEN        use DOXYGEN to generate API doc [$doxygen_default]
292   --host-cc=HOSTCC         use host C compiler HOSTCC
293   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
294   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
295   --host-ld=HOSTLD         use host linker HOSTLD
296   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
297   --host-libs=HLIBS        use libs HLIBS when linking for host
298   --host-os=OS             compiler host OS [$target_os]
299   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
300   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
301   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
302   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
303   --extra-libs=ELIBS       add ELIBS [$ELIBS]
304   --extra-version=STRING   version string suffix []
305   --optflags=OPTFLAGS      override optimization-related compiler flags
306   --build-suffix=SUFFIX    library name suffix []
307   --enable-pic             build position-independent code
308   --enable-thumb           compile for Thumb instruction set
309   --enable-lto             use link-time optimization
310
311 Advanced options (experts only):
312   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
313   --disable-symver         disable symbol versioning
314   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
315   --disable-safe-bitstream-reader
316                            disable buffer boundary checking in bitreaders
317                            (faster, but may crash)
318   --enable-memalign-hack   emulate memalign, interferes with memory debuggers
319   --enable-sram            allow use of on-chip SRAM
320   --sws-max-filter-size=N  the max filter size swscale uses [$sws_max_filter_size_default]
321
322 Optimization options (experts only):
323   --disable-asm            disable all assembly optimizations
324   --disable-altivec        disable AltiVec optimizations
325   --disable-amd3dnow       disable 3DNow! optimizations
326   --disable-amd3dnowext    disable 3DNow! extended optimizations
327   --disable-mmx            disable MMX optimizations
328   --disable-mmxext         disable MMXEXT optimizations
329   --disable-sse            disable SSE optimizations
330   --disable-sse2           disable SSE2 optimizations
331   --disable-sse3           disable SSE3 optimizations
332   --disable-ssse3          disable SSSE3 optimizations
333   --disable-sse4           disable SSE4 optimizations
334   --disable-sse42          disable SSE4.2 optimizations
335   --disable-avx            disable AVX optimizations
336   --disable-xop            disable XOP optimizations
337   --disable-fma3           disable FMA3 optimizations
338   --disable-fma4           disable FMA4 optimizations
339   --disable-avx2           disable AVX2 optimizations
340   --disable-armv5te        disable armv5te optimizations
341   --disable-armv6          disable armv6 optimizations
342   --disable-armv6t2        disable armv6t2 optimizations
343   --disable-vfp            disable VFP optimizations
344   --disable-neon           disable NEON optimizations
345   --disable-inline-asm     disable use of inline assembly
346   --disable-yasm           disable use of nasm/yasm assembly
347   --disable-mips32r2       disable MIPS32R2 optimizations
348   --disable-mipsdspr1      disable MIPS DSP ASE R1 optimizations
349   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
350   --disable-mipsfpu        disable floating point MIPS optimizations
351   --disable-fast-unaligned consider unaligned accesses slow
352
353 Developer options (useful when working on FFmpeg itself):
354   --disable-debug          disable debugging symbols
355   --enable-debug=LEVEL     set the debug level [$debuglevel]
356   --disable-optimizations  disable compiler optimizations
357   --enable-extra-warnings  enable more compiler warnings
358   --disable-stripping      disable stripping of executables and shared libraries
359   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
360                            2 causes a slowdown at runtime.
361   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
362   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
363                            leaks and errors, using the specified valgrind binary.
364                            Cannot be combined with --target-exec
365   --enable-ftrapv          Trap arithmetic overflows
366   --samples=PATH           location of test samples for FATE, if not set use
367                            \$FATE_SAMPLES at make invocation time.
368   --enable-neon-clobber-test check NEON registers for clobbering (should be
369                            used only for debugging purposes)
370   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
371                            should be used only for debugging purposes)
372   --enable-random          randomly enable/disable components
373   --disable-random
374   --enable-random=LIST     randomly enable/disable specific components or
375   --disable-random=LIST    component groups. LIST is a comma-separated list
376                            of NAME[:PROB] entries where NAME is a component
377                            (group) and PROB the probability associated with
378                            NAME (default 0.5).
379   --random-seed=VALUE      seed value for --enable/disable-random
380
381 NOTE: Object files are built at the place where configure is launched.
382 EOF
383   exit 0
384 }
385
386 quotes='""'
387
388 log(){
389     echo "$@" >> $logfile
390 }
391
392 log_file(){
393     log BEGIN $1
394     pr -n -t $1 >> $logfile
395     log END $1
396 }
397
398 echolog(){
399     log "$@"
400     echo "$@"
401 }
402
403 warn(){
404     log "WARNING: $*"
405     WARNINGS="${WARNINGS}WARNING: $*\n"
406 }
407
408 die(){
409     echolog "$@"
410     cat <<EOF
411
412 If you think configure made a mistake, make sure you are using the latest
413 version from Git.  If the latest version fails, report the problem to the
414 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
415 EOF
416     if disabled logging; then
417         cat <<EOF
418 Rerun configure with logging enabled (do not use --disable-logging), and
419 include the log this produces with your report.
420 EOF
421     else
422         cat <<EOF
423 Include the log file "$logfile" produced by configure as this will help
424 solve the problem.
425 EOF
426     fi
427     exit 1
428 }
429
430 # Avoid locale weirdness, besides we really just want to translate ASCII.
431 toupper(){
432     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
433 }
434
435 tolower(){
436     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
437 }
438
439 c_escape(){
440     echo "$*" | sed 's/["\\]/\\\0/g'
441 }
442
443 sh_quote(){
444     v=$(echo "$1" | sed "s/'/'\\\\''/g")
445     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
446     echo "$v"
447 }
448
449 cleanws(){
450     echo "$@" | sed 's/^ *//;s/  */ /g;s/ *$//;s/\\r//g'
451 }
452
453 filter(){
454     pat=$1
455     shift
456     for v; do
457         eval "case $v in $pat) echo $v ;; esac"
458     done
459 }
460
461 filter_out(){
462     pat=$1
463     shift
464     for v; do
465         eval "case $v in $pat) ;; *) echo $v ;; esac"
466     done
467 }
468
469 map(){
470     m=$1
471     shift
472     for v; do eval $m; done
473 }
474
475 add_suffix(){
476     suffix=$1
477     shift
478     for v; do echo ${v}${suffix}; done
479 }
480
481 set_all(){
482     value=$1
483     shift
484     for var in $*; do
485         eval $var=$value
486     done
487 }
488
489 set_weak(){
490     value=$1
491     shift
492     for var; do
493         eval : \${$var:=$value}
494     done
495 }
496
497 sanitize_var_name(){
498     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
499 }
500
501 set_safe(){
502     var=$1
503     shift
504     eval $(sanitize_var_name "$var")='$*'
505 }
506
507 get_safe(){
508     eval echo \$$(sanitize_var_name "$1")
509 }
510
511 pushvar(){
512     for pvar in $*; do
513         eval level=\${${pvar}_level:=0}
514         eval ${pvar}_${level}="\$$pvar"
515         eval ${pvar}_level=$(($level+1))
516     done
517 }
518
519 popvar(){
520     for pvar in $*; do
521         eval level=\${${pvar}_level:-0}
522         test $level = 0 && continue
523         eval level=$(($level-1))
524         eval $pvar="\${${pvar}_${level}}"
525         eval ${pvar}_level=$level
526         eval unset ${pvar}_${level}
527     done
528 }
529
530 enable(){
531     set_all yes $*
532 }
533
534 disable(){
535     set_all no $*
536 }
537
538 enable_weak(){
539     set_weak yes $*
540 }
541
542 disable_weak(){
543     set_weak no $*
544 }
545
546 enable_safe(){
547     for var; do
548         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
549     done
550 }
551
552 disable_safe(){
553     for var; do
554         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
555     done
556 }
557
558 do_enable_deep(){
559     for var; do
560         enabled $var && continue
561         eval sel="\$${var}_select"
562         eval sgs="\$${var}_suggest"
563         pushvar var sgs
564         enable_deep $sel
565         popvar sgs
566         enable_deep_weak $sgs
567         popvar var
568     done
569 }
570
571 enable_deep(){
572     do_enable_deep $*
573     enable $*
574 }
575
576 enable_deep_weak(){
577     for var; do
578         disabled $var && continue
579         pushvar var
580         do_enable_deep $var
581         popvar var
582         enable_weak $var
583     done
584 }
585
586 enabled(){
587     test "${1#!}" = "$1" && op== || op=!=
588     eval test "x\$${1#!}" $op "xyes"
589 }
590
591 disabled(){
592     test "${1#!}" = "$1" && op== || op=!=
593     eval test "x\$${1#!}" $op "xno"
594 }
595
596 enabled_all(){
597     for opt; do
598         enabled $opt || return 1
599     done
600 }
601
602 disabled_all(){
603     for opt; do
604         disabled $opt || return 1
605     done
606 }
607
608 enabled_any(){
609     for opt; do
610         enabled $opt && return 0
611     done
612 }
613
614 disabled_any(){
615     for opt; do
616         disabled $opt && return 0
617     done
618     return 1
619 }
620
621 set_default(){
622     for opt; do
623         eval : \${$opt:=\$${opt}_default}
624     done
625 }
626
627 is_in(){
628     value=$1
629     shift
630     for var in $*; do
631         [ $var = $value ] && return 0
632     done
633     return 1
634 }
635
636 do_check_deps(){
637     for cfg; do
638         cfg="${cfg#!}"
639         enabled ${cfg}_checking && die "Circular dependency for $cfg."
640         disabled ${cfg}_checking && continue
641         enable ${cfg}_checking
642         append allopts $cfg
643
644         eval dep_all="\$${cfg}_deps"
645         eval dep_any="\$${cfg}_deps_any"
646         eval dep_sel="\$${cfg}_select"
647         eval dep_sgs="\$${cfg}_suggest"
648         eval dep_ifa="\$${cfg}_if"
649         eval dep_ifn="\$${cfg}_if_any"
650
651         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
652         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
653         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
654
655         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
656         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
657         enabled_all  $dep_all || disable $cfg
658         enabled_any  $dep_any || disable $cfg
659         disabled_any $dep_sel && disable $cfg
660
661         if enabled $cfg; then
662             enable_deep $dep_sel
663             enable_deep_weak $dep_sgs
664         fi
665
666         disable ${cfg}_checking
667     done
668 }
669
670 check_deps(){
671     unset allopts
672
673     do_check_deps "$@"
674
675     for cfg in $allopts; do
676         enabled $cfg || continue
677         eval dep_extralibs="\$${cfg}_extralibs"
678         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
679     done
680 }
681
682 print_config(){
683     pfx=$1
684     files=$2
685     shift 2
686     map 'eval echo "$v \${$v:-no}"' "$@" |
687     awk "BEGIN { split(\"$files\", files) }
688         {
689             c = \"$pfx\" toupper(\$1);
690             v = \$2;
691             sub(/yes/, 1, v);
692             sub(/no/,  0, v);
693             for (f in files) {
694                 file = files[f];
695                 if (file ~ /\\.h\$/) {
696                     printf(\"#define %s %d\\n\", c, v) >>file;
697                 } else if (file ~ /\\.asm\$/) {
698                     printf(\"%%define %s %d\\n\", c, v) >>file;
699                 } else if (file ~ /\\.mak\$/) {
700                     n = -v ? \"\" : \"!\";
701                     printf(\"%s%s=yes\\n\", n, c) >>file;
702                 } else if (file ~ /\\.texi\$/) {
703                     pre = -v ? \"\" : \"@c \";
704                     yesno = \$2;
705                     c2 = tolower(c);
706                     gsub(/_/, \"-\", c2);
707                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
708                 }
709             }
710         }"
711 }
712
713 print_enabled(){
714     suf=$1
715     shift
716     for v; do
717         enabled $v && printf "%s\n" ${v%$suf};
718     done
719 }
720
721 append(){
722     var=$1
723     shift
724     eval "$var=\"\$$var $*\""
725 }
726
727 prepend(){
728     var=$1
729     shift
730     eval "$var=\"$* \$$var\""
731 }
732
733 unique(){
734     var=$1
735     uniq_list=""
736     for tok in $(eval echo \$$var); do
737         uniq_list="$(filter_out $tok $uniq_list) $tok"
738     done
739     eval "$var=\"${uniq_list}\""
740 }
741
742 add_cppflags(){
743     append CPPFLAGS "$@"
744 }
745
746 add_cflags(){
747     append CFLAGS $($cflags_filter "$@")
748 }
749
750 add_cxxflags(){
751     append CXXFLAGS $($cflags_filter "$@")
752 }
753
754 add_asflags(){
755     append ASFLAGS $($asflags_filter "$@")
756 }
757
758 add_ldflags(){
759     append LDFLAGS $($ldflags_filter "$@")
760 }
761
762 add_ldexeflags(){
763     append LDEXEFLAGS $($ldflags_filter "$@")
764 }
765
766 add_stripflags(){
767     append ASMSTRIPFLAGS "$@"
768 }
769
770 add_extralibs(){
771     prepend extralibs $($ldflags_filter "$@")
772 }
773
774 add_host_cppflags(){
775     append host_cppflags "$@"
776 }
777
778 add_host_cflags(){
779     append host_cflags $($host_cflags_filter "$@")
780 }
781
782 add_host_ldflags(){
783     append host_ldflags $($host_ldflags_filter "$@")
784 }
785
786 add_compat(){
787     append compat_objs $1
788     shift
789     map 'add_cppflags -D$v' "$@"
790 }
791
792 check_cmd(){
793     log "$@"
794     "$@" >> $logfile 2>&1
795 }
796
797 check_stat(){
798     log check_stat "$@"
799     stat "$1" >> $logfile 2>&1
800 }
801
802 cc_o(){
803     eval printf '%s\\n' $CC_O
804 }
805
806 cc_e(){
807     eval printf '%s\\n' $CC_E
808 }
809
810 check_cc(){
811     log check_cc "$@"
812     cat > $TMPC
813     log_file $TMPC
814     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
815 }
816
817 check_cxx(){
818     log check_cxx "$@"
819     cat > $TMPCPP
820     log_file $TMPCPP
821     check_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
822 }
823
824 check_oc(){
825     log check_oc "$@"
826     cat > $TMPM
827     log_file $TMPM
828     check_cmd $cc -Werror=missing-prototypes $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPM
829 }
830
831 check_cpp(){
832     log check_cpp "$@"
833     cat > $TMPC
834     log_file $TMPC
835     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
836 }
837
838 as_o(){
839     eval printf '%s\\n' $AS_O
840 }
841
842 check_as(){
843     log check_as "$@"
844     cat > $TMPS
845     log_file $TMPS
846     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
847 }
848
849 check_inline_asm(){
850     log check_inline_asm "$@"
851     name="$1"
852     code="$2"
853     shift 2
854     disable $name
855     check_cc "$@" <<EOF && enable $name
856 void foo(void){ __asm__ volatile($code); }
857 EOF
858 }
859
860 check_insn(){
861     log check_insn "$@"
862     check_inline_asm ${1}_inline "\"$2\""
863     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
864 }
865
866 check_yasm(){
867     log check_yasm "$@"
868     echo "$1" > $TMPS
869     log_file $TMPS
870     shift 1
871     check_cmd $yasmexe $YASMFLAGS -Werror "$@" -o $TMPO $TMPS
872 }
873
874 ld_o(){
875     eval printf '%s\\n' $LD_O
876 }
877
878 check_ld(){
879     log check_ld "$@"
880     type=$1
881     shift 1
882     flags=$(filter_out '-l*|*.so' $@)
883     libs=$(filter '-l*|*.so' $@)
884     check_$type $($cflags_filter $flags) || return
885     flags=$($ldflags_filter $flags)
886     libs=$($ldflags_filter $libs)
887     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
888 }
889
890 print_include(){
891     hdr=$1
892     test "${hdr%.h}" = "${hdr}" &&
893         echo "#include $hdr"    ||
894         echo "#include <$hdr>"
895 }
896
897 check_code(){
898     log check_code "$@"
899     check=$1
900     headers=$2
901     code=$3
902     shift 3
903     {
904         for hdr in $headers; do
905             print_include $hdr
906         done
907         echo "int main(void) { $code; return 0; }"
908     } | check_$check "$@"
909 }
910
911 check_cppflags(){
912     log check_cppflags "$@"
913     check_cc "$@" <<EOF && append CPPFLAGS "$@"
914 int x;
915 EOF
916 }
917
918 test_cflags(){
919     log test_cflags "$@"
920     set -- $($cflags_filter "$@")
921     check_cc "$@" <<EOF
922 int x;
923 EOF
924 }
925
926 check_cflags(){
927     log check_cflags "$@"
928     test_cflags "$@" && add_cflags "$@"
929 }
930
931 check_cxxflags(){
932     log check_cxxflags "$@"
933     set -- $($cflags_filter "$@")
934     check_cxx "$@" <<EOF && append CXXFLAGS "$@"
935 int x;
936 EOF
937 }
938
939 test_ldflags(){
940     log test_ldflags "$@"
941     check_ld "cc" "$@" <<EOF
942 int main(void){ return 0; }
943 EOF
944 }
945
946 check_ldflags(){
947     log check_ldflags "$@"
948     test_ldflags "$@" && add_ldflags "$@"
949 }
950
951 test_stripflags(){
952     log test_stripflags "$@"
953     # call check_cc to get a fresh TMPO
954     check_cc <<EOF
955 int main(void) { return 0; }
956 EOF
957     check_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
958 }
959
960 check_stripflags(){
961     log check_stripflags "$@"
962     test_stripflags "$@" && add_stripflags "$@"
963 }
964
965 check_header(){
966     log check_header "$@"
967     header=$1
968     shift
969     disable_safe $header
970     check_cpp "$@" <<EOF && enable_safe $header
971 #include <$header>
972 int x;
973 EOF
974 }
975
976 check_header_oc(){
977     log check_header_oc "$@"
978     rm -f -- "$TMPO"
979     header=$1
980     shift
981     disable_safe $header
982     {
983        echo "#include <$header>"
984        echo "int main(void) { return 0; }"
985     } | check_oc && check_stat "$TMPO" && enable_safe $headers
986 }
987
988 check_func(){
989     log check_func "$@"
990     func=$1
991     shift
992     disable $func
993     check_ld "cc" "$@" <<EOF && enable $func
994 extern int $func();
995 int main(void){ $func(); }
996 EOF
997 }
998
999 check_mathfunc(){
1000     log check_mathfunc "$@"
1001     func=$1
1002     narg=$2
1003     shift 2
1004     test $narg = 2 && args="f, g" || args="f"
1005     disable $func
1006     check_ld "cc" "$@" <<EOF && enable $func
1007 #include <math.h>
1008 float foo(float f, float g) { return $func($args); }
1009 int main(void){ return (int) foo; }
1010 EOF
1011 }
1012
1013 check_func_headers(){
1014     log check_func_headers "$@"
1015     headers=$1
1016     funcs=$2
1017     shift 2
1018     {
1019         for hdr in $headers; do
1020             print_include $hdr
1021         done
1022         for func in $funcs; do
1023             echo "long check_$func(void) { return (long) $func; }"
1024         done
1025         echo "int main(void) { return 0; }"
1026     } | check_ld "cc" "$@" && enable $funcs && enable_safe $headers
1027 }
1028
1029 check_class_headers_cpp(){
1030     log check_class_headers_cpp "$@"
1031     headers=$1
1032     classes=$2
1033     shift 2
1034     {
1035         for hdr in $headers; do
1036             echo "#include <$hdr>"
1037         done
1038         echo "int main(void) { "
1039         i=1
1040         for class in $classes; do
1041             echo "$class obj$i;"
1042             i=$(expr $i + 1)
1043         done
1044         echo "return 0; }"
1045     } | check_ld "cxx" "$@" && enable $funcs && enable_safe $headers
1046 }
1047
1048 check_cpp_condition(){
1049     log check_cpp_condition "$@"
1050     header=$1
1051     condition=$2
1052     shift 2
1053     check_cpp "$@" <<EOF
1054 #include <$header>
1055 #if !($condition)
1056 #error "unsatisfied condition: $condition"
1057 #endif
1058 EOF
1059 }
1060
1061 check_lib(){
1062     log check_lib "$@"
1063     header="$1"
1064     func="$2"
1065     shift 2
1066     check_header $header && check_func $func "$@" && add_extralibs "$@"
1067 }
1068
1069 check_lib2(){
1070     log check_lib2 "$@"
1071     headers="$1"
1072     funcs="$2"
1073     shift 2
1074     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
1075 }
1076
1077 check_lib_cpp(){
1078     log check_lib_cpp "$@"
1079     headers="$1"
1080     classes="$2"
1081     shift 2
1082     check_class_headers_cpp "$headers" "$classes" "$@" && add_extralibs "$@"
1083 }
1084
1085 check_pkg_config(){
1086     log check_pkg_config "$@"
1087     pkgandversion="$1"
1088     pkg="${1%% *}"
1089     headers="$2"
1090     funcs="$3"
1091     shift 3
1092     check_cmd $pkg_config --exists --print-errors $pkgandversion || return
1093     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1094     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1095     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1096         set_safe ${pkg}_cflags $pkg_cflags   &&
1097         set_safe ${pkg}_libs   $pkg_libs
1098 }
1099
1100 check_exec(){
1101     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1102 }
1103
1104 check_exec_crash(){
1105     code=$(cat)
1106
1107     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1108     # are safe but may not be available everywhere.  Thus we use
1109     # raise(SIGTERM) instead.  The check is run in a subshell so we
1110     # can redirect the "Terminated" message from the shell.  SIGBUS
1111     # is not defined by standard C so it is used conditionally.
1112
1113     (check_exec "$@") >> $logfile 2>&1 <<EOF
1114 #include <signal.h>
1115 static void sighandler(int sig){
1116     raise(SIGTERM);
1117 }
1118 int foo(void){
1119     $code
1120 }
1121 int (*func_ptr)(void) = foo;
1122 int main(void){
1123     signal(SIGILL, sighandler);
1124     signal(SIGFPE, sighandler);
1125     signal(SIGSEGV, sighandler);
1126 #ifdef SIGBUS
1127     signal(SIGBUS, sighandler);
1128 #endif
1129     return func_ptr();
1130 }
1131 EOF
1132 }
1133
1134 check_type(){
1135     log check_type "$@"
1136     headers=$1
1137     type=$2
1138     shift 2
1139     disable_safe "$type"
1140     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1141 }
1142
1143 check_struct(){
1144     log check_struct "$@"
1145     headers=$1
1146     struct=$2
1147     member=$3
1148     shift 3
1149     disable_safe "${struct}_${member}"
1150     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1151         enable_safe "${struct}_${member}"
1152 }
1153
1154 check_builtin(){
1155     log check_builtin "$@"
1156     name=$1
1157     headers=$2
1158     builtin=$3
1159     shift 3
1160     disable "$name"
1161     check_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1162 }
1163
1164 check_compile_assert(){
1165     log check_compile_assert "$@"
1166     name=$1
1167     headers=$2
1168     condition=$3
1169     shift 3
1170     disable "$name"
1171     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1172 }
1173
1174 require(){
1175     name="$1"
1176     header="$2"
1177     func="$3"
1178     shift 3
1179     check_lib $header $func "$@" || die "ERROR: $name not found"
1180 }
1181
1182 require2(){
1183     name="$1"
1184     headers="$2"
1185     func="$3"
1186     shift 3
1187     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
1188 }
1189
1190 require_cpp(){
1191     name="$1"
1192     headers="$2"
1193     classes="$3"
1194     shift 3
1195     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1196 }
1197
1198 require_pkg_config(){
1199     pkg="$1"
1200     check_pkg_config "$@" || die "ERROR: $pkg not found"
1201     add_cflags    $(get_safe ${pkg}_cflags)
1202     add_extralibs $(get_safe ${pkg}_libs)
1203 }
1204
1205 require_libfreetype(){
1206     log require_libfreetype "$@"
1207     pkg="freetype2"
1208     check_cmd $pkg_config --exists --print-errors $pkg \
1209       || die "ERROR: $pkg not found"
1210     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1211     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1212     {
1213         echo "#include <ft2build.h>"
1214         echo "#include FT_FREETYPE_H"
1215         echo "long check_func(void) { return (long) FT_Init_FreeType; }"
1216         echo "int main(void) { return 0; }"
1217     } | check_ld "cc" $pkg_cflags $pkg_libs \
1218       && set_safe ${pkg}_cflags $pkg_cflags \
1219       && set_safe ${pkg}_libs   $pkg_libs \
1220       || die "ERROR: $pkg not found"
1221     add_cflags    $(get_safe ${pkg}_cflags)
1222     add_extralibs $(get_safe ${pkg}_libs)
1223 }
1224
1225 hostcc_e(){
1226     eval printf '%s\\n' $HOSTCC_E
1227 }
1228
1229 hostcc_o(){
1230     eval printf '%s\\n' $HOSTCC_O
1231 }
1232
1233 check_host_cc(){
1234     log check_host_cc "$@"
1235     cat > $TMPC
1236     log_file $TMPC
1237     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1238 }
1239
1240 check_host_cpp(){
1241     log check_host_cpp "$@"
1242     cat > $TMPC
1243     log_file $TMPC
1244     check_cmd $host_cc $HOSTCPPFLAGS $HOSTCFLAGS "$@" $(hostcc_e $TMPO) $TMPC
1245 }
1246
1247 check_host_cppflags(){
1248     log check_host_cppflags "$@"
1249     check_host_cc "$@" <<EOF && append host_cppflags "$@"
1250 int x;
1251 EOF
1252 }
1253
1254 check_host_cflags(){
1255     log check_host_cflags "$@"
1256     set -- $($host_cflags_filter "$@")
1257     check_host_cc "$@" <<EOF && append host_cflags "$@"
1258 int x;
1259 EOF
1260 }
1261
1262 check_host_cpp_condition(){
1263     log check_host_cpp_condition "$@"
1264     header=$1
1265     condition=$2
1266     shift 2
1267     check_host_cpp "$@" <<EOF
1268 #include <$header>
1269 #if !($condition)
1270 #error "unsatisfied condition: $condition"
1271 #endif
1272 EOF
1273 }
1274
1275 apply(){
1276     file=$1
1277     shift
1278     "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
1279 }
1280
1281 cp_if_changed(){
1282     cmp -s "$1" "$2" && echo "$2 is unchanged" && return
1283     mkdir -p "$(dirname $2)"
1284     $cp_f "$1" "$2"
1285 }
1286
1287 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1288 # system-dependent things.
1289
1290 COMPONENT_LIST="
1291     bsfs
1292     decoders
1293     demuxers
1294     encoders
1295     filters
1296     hwaccels
1297     indevs
1298     muxers
1299     outdevs
1300     parsers
1301     protocols
1302 "
1303
1304 EXAMPLE_LIST="
1305     avio_reading_example
1306     decoding_encoding_example
1307     demuxing_decoding_example
1308     filter_audio_example
1309     filtering_audio_example
1310     filtering_video_example
1311     metadata_example
1312     muxing_example
1313     remuxing_example
1314     resampling_audio_example
1315     scaling_video_example
1316     transcode_aac_example
1317     transcoding_example
1318 "
1319
1320 EXTERNAL_LIBRARY_LIST="
1321     avisynth
1322     bzlib
1323     crystalhd
1324     decklink
1325     frei0r
1326     gnutls
1327     iconv
1328     ladspa
1329     libaacplus
1330     libass
1331     libbluray
1332     libbs2b
1333     libcaca
1334     libcdio
1335     libcelt
1336     libdc1394
1337     libfaac
1338     libfdk_aac
1339     libflite
1340     libfontconfig
1341     libfreetype
1342     libfribidi
1343     libgme
1344     libgsm
1345     libiec61883
1346     libilbc
1347     libmodplug
1348     libmp3lame
1349     libnut
1350     libopencore_amrnb
1351     libopencore_amrwb
1352     libopencv
1353     libopenjpeg
1354     libopus
1355     libpulse
1356     libquvi
1357     librtmp
1358     libschroedinger
1359     libshine
1360     libsmbclient
1361     libsoxr
1362     libspeex
1363     libssh
1364     libstagefright_h264
1365     libtheora
1366     libtwolame
1367     libutvideo
1368     libv4l2
1369     libvidstab
1370     libvo_aacenc
1371     libvo_amrwbenc
1372     libvorbis
1373     libvpx
1374     libwavpack
1375     libwebp
1376     libx264
1377     libx265
1378     libxavs
1379     libxvid
1380     libzmq
1381     libzvbi
1382     openal
1383     opencl
1384     opengl
1385     openssl
1386     x11grab
1387     xlib
1388     zlib
1389 "
1390
1391 DOCUMENT_LIST="
1392     doc
1393     htmlpages
1394     manpages
1395     podpages
1396     txtpages
1397 "
1398
1399 FEATURE_LIST="
1400     ftrapv
1401     gray
1402     hardcoded_tables
1403     runtime_cpudetect
1404     safe_bitstream_reader
1405     shared
1406     small
1407     sram
1408     static
1409     swscale_alpha
1410 "
1411
1412 HWACCEL_LIST="
1413     dxva2
1414     vaapi
1415     vda
1416     vdpau
1417     xvmc
1418 "
1419
1420 LIBRARY_LIST="
1421     avcodec
1422     avdevice
1423     avfilter
1424     avformat
1425     avresample
1426     avutil
1427     postproc
1428     swresample
1429     swscale
1430 "
1431
1432 LICENSE_LIST="
1433     gpl
1434     nonfree
1435     version3
1436 "
1437
1438 PROGRAM_LIST="
1439     ffplay
1440     ffprobe
1441     ffserver
1442     ffmpeg
1443 "
1444
1445 SUBSYSTEM_LIST="
1446     dct
1447     dwt
1448     error_resilience
1449     fast_unaligned
1450     fft
1451     lsp
1452     lzo
1453     mdct
1454     network
1455     rdft
1456 "
1457
1458 CONFIG_LIST="
1459     $COMPONENT_LIST
1460     $DOCUMENT_LIST
1461     $EXAMPLE_LIST
1462     $EXTERNAL_LIBRARY_LIST
1463     $FEATURE_LIST
1464     $HWACCEL_LIST
1465     $LICENSE_LIST
1466     $LIBRARY_LIST
1467     $PROGRAM_LIST
1468     $SUBSYSTEM_LIST
1469     fontconfig
1470     incompatible_libav_abi
1471     memalign_hack
1472     memory_poisoning
1473     neon_clobber_test
1474     pic
1475     pod2man
1476     raise_major
1477     thumb
1478     xmm_clobber_test
1479 "
1480
1481 THREADS_LIST="
1482     pthreads
1483     os2threads
1484     w32threads
1485 "
1486
1487 ATOMICS_LIST="
1488     atomics_gcc
1489     atomics_suncc
1490     atomics_win32
1491 "
1492
1493 ARCH_LIST="
1494     aarch64
1495     alpha
1496     arm
1497     avr32
1498     avr32_ap
1499     avr32_uc
1500     bfin
1501     ia64
1502     m68k
1503     mips
1504     mips64
1505     parisc
1506     ppc
1507     ppc64
1508     s390
1509     sh4
1510     sparc
1511     sparc64
1512     tilegx
1513     tilepro
1514     tomi
1515     x86
1516     x86_32
1517     x86_64
1518 "
1519
1520 ARCH_EXT_LIST_ARM="
1521     armv5te
1522     armv6
1523     armv6t2
1524     armv8
1525     neon
1526     vfp
1527     vfpv3
1528 "
1529
1530 ARCH_EXT_LIST_MIPS="
1531     mipsfpu
1532     mips32r2
1533     mipsdspr1
1534     mipsdspr2
1535 "
1536
1537 ARCH_EXT_LIST_X86_SIMD="
1538     amd3dnow
1539     amd3dnowext
1540     avx
1541     avx2
1542     fma3
1543     fma4
1544     mmx
1545     mmxext
1546     sse
1547     sse2
1548     sse3
1549     sse4
1550     sse42
1551     ssse3
1552     xop
1553 "
1554
1555 ARCH_EXT_LIST_PPC="
1556     altivec
1557     dcbzl
1558     ldbrx
1559     ppc4xx
1560     vsx
1561 "
1562
1563 ARCH_EXT_LIST_X86="
1564     $ARCH_EXT_LIST_X86_SIMD
1565     cpunop
1566     i686
1567 "
1568
1569 ARCH_EXT_LIST="
1570     $ARCH_EXT_LIST_ARM
1571     $ARCH_EXT_LIST_PPC
1572     $ARCH_EXT_LIST_X86
1573     $ARCH_EXT_LIST_MIPS
1574     loongson
1575 "
1576
1577 ARCH_FEATURES="
1578     aligned_stack
1579     fast_64bit
1580     fast_clz
1581     fast_cmov
1582     local_aligned_8
1583     local_aligned_16
1584     local_aligned_32
1585 "
1586
1587 BUILTIN_LIST="
1588     atomic_cas_ptr
1589     machine_rw_barrier
1590     MemoryBarrier
1591     mm_empty
1592     rdtsc
1593     sarestart
1594     sync_val_compare_and_swap
1595 "
1596 HAVE_LIST_CMDLINE="
1597     inline_asm
1598     symver
1599     yasm
1600 "
1601
1602 HAVE_LIST_PUB="
1603     bigendian
1604     fast_unaligned
1605     incompatible_libav_abi
1606 "
1607
1608 HEADERS_LIST="
1609     alsa_asoundlib_h
1610     altivec_h
1611     arpa_inet_h
1612     asm_types_h
1613     cdio_paranoia_h
1614     cdio_paranoia_paranoia_h
1615     CL_cl_h
1616     dev_bktr_ioctl_bt848_h
1617     dev_bktr_ioctl_meteor_h
1618     dev_ic_bt8xx_h
1619     dev_video_bktr_ioctl_bt848_h
1620     dev_video_meteor_ioctl_meteor_h
1621     direct_h
1622     dlfcn_h
1623     dxva_h
1624     ES2_gl_h
1625     gsm_h
1626     io_h
1627     mach_mach_time_h
1628     machine_ioctl_bt848_h
1629     machine_ioctl_meteor_h
1630     malloc_h
1631     openjpeg_1_5_openjpeg_h
1632     OpenGL_gl3_h
1633     poll_h
1634     sndio_h
1635     soundcard_h
1636     sys_mman_h
1637     sys_param_h
1638     sys_resource_h
1639     sys_select_h
1640     sys_soundcard_h
1641     sys_time_h
1642     sys_un_h
1643     sys_videoio_h
1644     termios_h
1645     unistd_h
1646     windows_h
1647     winsock2_h
1648 "
1649
1650 MATH_FUNCS="
1651     atanf
1652     atan2f
1653     cbrt
1654     cbrtf
1655     cosf
1656     exp2
1657     exp2f
1658     expf
1659     fminf
1660     isinf
1661     isnan
1662     ldexpf
1663     llrint
1664     llrintf
1665     log2
1666     log2f
1667     log10f
1668     lrint
1669     lrintf
1670     powf
1671     rint
1672     round
1673     roundf
1674     sinf
1675     trunc
1676     truncf
1677 "
1678
1679 SYSTEM_FUNCS="
1680     access
1681     aligned_malloc
1682     clock_gettime
1683     closesocket
1684     CommandLineToArgvW
1685     CoTaskMemFree
1686     CryptGenRandom
1687     dlopen
1688     fcntl
1689     flt_lim
1690     fork
1691     getaddrinfo
1692     gethrtime
1693     getopt
1694     GetProcessAffinityMask
1695     GetProcessMemoryInfo
1696     GetProcessTimes
1697     getrusage
1698     getservbyport
1699     GetSystemTimeAsFileTime
1700     gettimeofday
1701     glob
1702     glXGetProcAddress
1703     inet_aton
1704     isatty
1705     jack_port_get_latency_range
1706     kbhit
1707     localtime_r
1708     lzo1x_999_compress
1709     mach_absolute_time
1710     MapViewOfFile
1711     memalign
1712     mkstemp
1713     mmap
1714     mprotect
1715     nanosleep
1716     PeekNamedPipe
1717     posix_memalign
1718     pthread_cancel
1719     sched_getaffinity
1720     SetConsoleTextAttribute
1721     setmode
1722     setrlimit
1723     Sleep
1724     strerror_r
1725     sysconf
1726     sysctl
1727     usleep
1728     VirtualAlloc
1729     wglGetProcAddress
1730 "
1731
1732 TOOLCHAIN_FEATURES="
1733     as_dn_directive
1734     as_func
1735     asm_mod_q
1736     attribute_may_alias
1737     attribute_packed
1738     ebp_available
1739     ebx_available
1740     gnu_as
1741     gnu_windres
1742     ibm_asm
1743     inline_asm_labels
1744     inline_asm_nonlocal_labels
1745     inline_asm_direct_symbol_refs
1746     pragma_deprecated
1747     rsync_contimeout
1748     symver_asm_label
1749     symver_gnu_asm
1750     vfp_args
1751     xform_asm
1752     xmm_clobbers
1753 "
1754
1755 TYPES_LIST="
1756     socklen_t
1757     struct_addrinfo
1758     struct_group_source_req
1759     struct_ip_mreq_source
1760     struct_ipv6_mreq
1761     struct_pollfd
1762     struct_rusage_ru_maxrss
1763     struct_sctp_event_subscribe
1764     struct_sockaddr_in6
1765     struct_sockaddr_sa_len
1766     struct_sockaddr_storage
1767     struct_stat_st_mtim_tv_nsec
1768     struct_v4l2_frmivalenum_discrete
1769 "
1770
1771 HAVE_LIST="
1772     $ARCH_EXT_LIST
1773     $(add_suffix _external $ARCH_EXT_LIST)
1774     $(add_suffix _inline   $ARCH_EXT_LIST)
1775     $ARCH_FEATURES
1776     $ATOMICS_LIST
1777     $BUILTIN_LIST
1778     $HAVE_LIST_CMDLINE
1779     $HAVE_LIST_PUB
1780     $HEADERS_LIST
1781     $MATH_FUNCS
1782     $SYSTEM_FUNCS
1783     $THREADS_LIST
1784     $TOOLCHAIN_FEATURES
1785     $TYPES_LIST
1786     atomics_native
1787     dos_paths
1788     dxva2api_cobj
1789     dxva2_lib
1790     libc_msvcrt
1791     libdc1394_1
1792     libdc1394_2
1793     makeinfo
1794     perl
1795     pod2man
1796     sdl
1797     texi2html
1798     threads
1799     vdpau_x11
1800     xlib
1801 "
1802
1803 # options emitted with CONFIG_ prefix but not available on the command line
1804 CONFIG_EXTRA="
1805     aandcttables
1806     ac3dsp
1807     audio_frame_queue
1808     audiodsp
1809     blockdsp
1810     bswapdsp
1811     cabac
1812     dvprofile
1813     exif
1814     fdctdsp
1815     frame_thread_encoder
1816     gcrypt
1817     golomb
1818     gplv3
1819     h263dsp
1820     h264chroma
1821     h264dsp
1822     h264pred
1823     h264qpel
1824     hpeldsp
1825     huffman
1826     huffyuvdsp
1827     huffyuvencdsp
1828     idctdsp
1829     iirfilter
1830     intrax8
1831     lgplv3
1832     llauddsp
1833     llviddsp
1834     lpc
1835     me_cmp
1836     mpeg_er
1837     mpegaudio
1838     mpegaudiodsp
1839     mpegvideo
1840     mpegvideoenc
1841     nettle
1842     pixblockdsp
1843     qpeldsp
1844     rangecoder
1845     riffdec
1846     riffenc
1847     rtpdec
1848     rtpenc_chain
1849     sinewin
1850     tpeldsp
1851     videodsp
1852     vp3dsp
1853 "
1854
1855 CMDLINE_SELECT="
1856     $ARCH_EXT_LIST
1857     $CONFIG_LIST
1858     $HAVE_LIST_CMDLINE
1859     $THREADS_LIST
1860     asm
1861     cross_compile
1862     debug
1863     extra_warnings
1864     logging
1865     lto
1866     optimizations
1867     rpath
1868     stripping
1869 "
1870
1871 PATHS_LIST="
1872     bindir
1873     datadir
1874     docdir
1875     incdir
1876     libdir
1877     mandir
1878     prefix
1879     shlibdir
1880 "
1881
1882 CMDLINE_SET="
1883     $PATHS_LIST
1884     ar
1885     arch
1886     as
1887     assert_level
1888     build_suffix
1889     cc
1890     cpu
1891     cross_prefix
1892     cxx
1893     dep_cc
1894     doxygen
1895     extra_version
1896     gas
1897     host_cc
1898     host_cflags
1899     host_ld
1900     host_ldflags
1901     host_libs
1902     host_os
1903     install
1904     ld
1905     logfile
1906     malloc_prefix
1907     nm
1908     optflags
1909     pkg_config
1910     pkg_config_flags
1911     progs_suffix
1912     random_seed
1913     ranlib
1914     samples
1915     strip
1916     sws_max_filter_size
1917     sysinclude
1918     sysroot
1919     target_exec
1920     target_os
1921     target_path
1922     target_samples
1923     tempprefix
1924     toolchain
1925     valgrind
1926     yasmexe
1927 "
1928
1929 CMDLINE_APPEND="
1930     extra_cflags
1931     extra_cxxflags
1932     host_cppflags
1933 "
1934
1935 # code dependency declarations
1936
1937 # architecture extensions
1938
1939 armv5te_deps="arm"
1940 armv6_deps="arm"
1941 armv6t2_deps="arm"
1942 armv8_deps="aarch64"
1943 neon_deps_any="aarch64 arm"
1944 vfp_deps_any="aarch64 arm"
1945 vfpv3_deps="vfp"
1946
1947 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1948
1949 mipsfpu_deps="mips"
1950 mips32r2_deps="mips"
1951 mipsdspr1_deps="mips"
1952 mipsdspr2_deps="mips"
1953
1954 altivec_deps="ppc"
1955 ppc4xx_deps="ppc"
1956 vsx_deps="ppc"
1957
1958 cpunop_deps="i686"
1959 x86_64_select="i686"
1960 x86_64_suggest="fast_cmov"
1961
1962 amd3dnow_deps="mmx"
1963 amd3dnowext_deps="amd3dnow"
1964 i686_deps="x86"
1965 mmx_deps="x86"
1966 mmxext_deps="mmx"
1967 sse_deps="mmxext"
1968 sse2_deps="sse"
1969 sse3_deps="sse2"
1970 ssse3_deps="sse3"
1971 sse4_deps="ssse3"
1972 sse42_deps="sse4"
1973 avx_deps="sse42"
1974 xop_deps="avx"
1975 fma3_deps="avx"
1976 fma4_deps="avx"
1977 avx2_deps="avx"
1978
1979 mmx_external_deps="yasm"
1980 mmx_inline_deps="inline_asm"
1981 mmx_suggest="mmx_external mmx_inline"
1982
1983 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
1984     eval dep=\$${ext}_deps
1985     eval ${ext}_external_deps='"${dep}_external"'
1986     eval ${ext}_inline_deps='"${dep}_inline"'
1987     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1988 done
1989
1990 aligned_stack_if_any="aarch64 ppc x86"
1991 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1992 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
1993 fast_unaligned_if_any="aarch64 ppc x86"
1994
1995 need_memalign="altivec neon sse"
1996
1997 # system capabilities
1998
1999 symver_if_any="symver_asm_label symver_gnu_asm"
2000
2001 # threading support
2002 atomics_gcc_if="sync_val_compare_and_swap"
2003 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2004 atomics_win32_if="MemoryBarrier"
2005 atomics_native_if_any="$ATOMICS_LIST"
2006 w32threads_deps="atomics_native"
2007 threads_if_any="$THREADS_LIST"
2008
2009 # subsystems
2010 dct_select="rdft"
2011 error_resilience_select="me_cmp"
2012 frame_thread_encoder_deps="encoders threads"
2013 intrax8_select="error_resilience"
2014 mdct_select="fft"
2015 rdft_select="fft"
2016 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2017 mpeg_er_select="error_resilience"
2018 mpegaudio_select="mpegaudiodsp"
2019 mpegaudiodsp_select="dct"
2020 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp videodsp"
2021 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
2022
2023 # decoders / encoders
2024 aac_decoder_select="mdct sinewin"
2025 aac_encoder_select="audio_frame_queue iirfilter mdct sinewin"
2026 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2027 ac3_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2028 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2029 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2030 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2031 aic_decoder_select="golomb idctdsp"
2032 alac_encoder_select="lpc"
2033 als_decoder_select="bswapdsp"
2034 amrnb_decoder_select="lsp"
2035 amrwb_decoder_select="lsp"
2036 amv_decoder_select="sp5x_decoder exif"
2037 amv_encoder_select="aandcttables mpegvideoenc"
2038 ape_decoder_select="bswapdsp llauddsp"
2039 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2040 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2041 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2042 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2043 atrac1_decoder_select="mdct sinewin"
2044 atrac3_decoder_select="mdct"
2045 atrac3p_decoder_select="mdct sinewin"
2046 avrn_decoder_select="exif"
2047 bink_decoder_select="blockdsp hpeldsp"
2048 binkaudio_dct_decoder_select="mdct rdft dct sinewin"
2049 binkaudio_rdft_decoder_select="mdct rdft sinewin"
2050 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2051 cllc_decoder_select="bswapdsp"
2052 comfortnoise_encoder_select="lpc"
2053 cook_decoder_select="audiodsp mdct sinewin"
2054 cscd_decoder_select="lzo"
2055 cscd_decoder_suggest="zlib"
2056 dca_decoder_select="mdct"
2057 dirac_decoder_select="dwt golomb videodsp mpegvideoenc"
2058 dnxhd_decoder_select="blockdsp idctdsp"
2059 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2060 dvvideo_decoder_select="dvprofile idctdsp"
2061 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2062 dxa_decoder_select="zlib"
2063 eac3_decoder_select="ac3_decoder"
2064 eac3_encoder_select="ac3_encoder"
2065 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2066 eatgq_decoder_select="aandcttables"
2067 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpeg1video_decoder"
2068 exr_decoder_select="zlib"
2069 ffv1_decoder_select="golomb rangecoder"
2070 ffv1_encoder_select="rangecoder"
2071 ffvhuff_decoder_select="huffyuv_decoder"
2072 ffvhuff_encoder_select="huffyuv_encoder"
2073 fic_decoder_select="golomb"
2074 flac_decoder_select="golomb"
2075 flac_encoder_select="bswapdsp golomb lpc"
2076 flashsv_decoder_select="zlib"
2077 flashsv_encoder_select="zlib"
2078 flashsv2_encoder_select="zlib"
2079 flashsv2_decoder_select="zlib"
2080 flv_decoder_select="h263_decoder"
2081 flv_encoder_select="h263_encoder"
2082 fourxm_decoder_select="blockdsp bswapdsp"
2083 fraps_decoder_select="bswapdsp huffman"
2084 g2m_decoder_select="blockdsp idctdsp zlib"
2085 g729_decoder_select="audiodsp"
2086 h261_decoder_select="mpeg_er mpegvideo"
2087 h261_encoder_select="aandcttables mpegvideoenc"
2088 h263_decoder_select="error_resilience h263_parser h263dsp mpeg_er mpegvideo qpeldsp"
2089 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2090 h263i_decoder_select="h263_decoder"
2091 h263p_encoder_select="h263_encoder"
2092 h264_decoder_select="cabac golomb h264chroma h264dsp h264pred h264qpel videodsp"
2093 h264_decoder_suggest="error_resilience"
2094 hevc_decoder_select="bswapdsp cabac golomb videodsp"
2095 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2096 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llviddsp"
2097 iac_decoder_select="imc_decoder"
2098 imc_decoder_select="bswapdsp fft mdct sinewin"
2099 indeo3_decoder_select="hpeldsp"
2100 interplay_video_decoder_select="hpeldsp"
2101 jpegls_decoder_select="golomb mjpeg_decoder"
2102 jpegls_encoder_select="golomb"
2103 jv_decoder_select="blockdsp"
2104 lagarith_decoder_select="huffyuvdsp"
2105 ljpeg_encoder_select="aandcttables idctdsp"
2106 loco_decoder_select="golomb"
2107 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2108 metasound_decoder_select="lsp mdct sinewin"
2109 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2110 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp"
2111 mjpeg_encoder_select="aandcttables mpegvideoenc"
2112 mjpegb_decoder_select="mjpeg_decoder"
2113 mlp_decoder_select="mlp_parser"
2114 motionpixels_decoder_select="bswapdsp"
2115 mp1_decoder_select="mpegaudio"
2116 mp1float_decoder_select="mpegaudio"
2117 mp2_decoder_select="mpegaudio"
2118 mp2float_decoder_select="mpegaudio"
2119 mp3_decoder_select="mpegaudio"
2120 mp3adu_decoder_select="mpegaudio"
2121 mp3adufloat_decoder_select="mpegaudio"
2122 mp3float_decoder_select="mpegaudio"
2123 mp3on4_decoder_select="mpegaudio"
2124 mp3on4float_decoder_select="mpegaudio"
2125 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2126 mpc8_decoder_select="mpegaudiodsp"
2127 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
2128 mpeg_xvmc_decoder_select="mpeg2video_decoder"
2129 mpeg1video_decoder_select="error_resilience mpeg_er mpegvideo"
2130 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2131 mpeg2video_decoder_select="error_resilience mpeg_er mpegvideo"
2132 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2133 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2134 mpeg4_encoder_select="h263_encoder"
2135 msmpeg4v1_decoder_select="h263_decoder"
2136 msmpeg4v2_decoder_select="h263_decoder"
2137 msmpeg4v2_encoder_select="h263_encoder"
2138 msmpeg4v3_decoder_select="h263_decoder"
2139 msmpeg4v3_encoder_select="h263_encoder"
2140 mss2_decoder_select="error_resilience mpeg_er qpeldsp vc1_decoder"
2141 mxpeg_decoder_select="mjpeg_decoder"
2142 nellymoser_decoder_select="mdct sinewin"
2143 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2144 nuv_decoder_select="idctdsp lzo"
2145 on2avc_decoder_select="mdct"
2146 opus_decoder_deps="swresample"
2147 png_decoder_select="zlib"
2148 png_encoder_select="huffyuvencdsp zlib"
2149 prores_decoder_select="blockdsp idctdsp"
2150 prores_encoder_select="fdctdsp"
2151 qcelp_decoder_select="lsp"
2152 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2153 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2154 ra_144_decoder_select="audiodsp"
2155 ralf_decoder_select="golomb"
2156 rawvideo_decoder_select="bswapdsp"
2157 rtjpeg_decoder_select="me_cmp"
2158 rv10_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2159 rv10_encoder_select="h263_encoder"
2160 rv20_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2161 rv20_encoder_select="h263_encoder"
2162 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo videodsp"
2163 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo videodsp"
2164 shorten_decoder_select="golomb"
2165 sipr_decoder_select="lsp"
2166 snow_decoder_select="dwt h264qpel hpeldsp rangecoder"
2167 snow_encoder_select="aandcttables dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2168 sonic_decoder_select="golomb rangecoder"
2169 sonic_encoder_select="golomb rangecoder"
2170 sonic_ls_encoder_select="golomb rangecoder"
2171 sp5x_decoder_select="mjpeg_decoder"
2172 svq1_decoder_select="hpeldsp"
2173 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2174 svq3_decoder_select="h264_decoder hpeldsp tpeldsp"
2175 svq3_decoder_suggest="zlib"
2176 tak_decoder_select="audiodsp"
2177 theora_decoder_select="vp3_decoder"
2178 thp_decoder_select="mjpeg_decoder"
2179 tiff_decoder_suggest="zlib"
2180 tiff_encoder_suggest="zlib"
2181 truehd_decoder_select="mlp_parser"
2182 truemotion2_decoder_select="bswapdsp"
2183 truespeech_decoder_select="bswapdsp"
2184 tscc_decoder_select="zlib"
2185 twinvq_decoder_select="mdct lsp sinewin"
2186 utvideo_decoder_select="bswapdsp"
2187 utvideo_encoder_select="bswapdsp huffman huffyuvencdsp"
2188 vble_decoder_select="huffyuvdsp"
2189 vc1_decoder_select="blockdsp error_resilience h263_decoder h264chroma h264qpel intrax8 mpeg_er qpeldsp"
2190 vc1image_decoder_select="vc1_decoder"
2191 vorbis_decoder_select="mdct"
2192 vorbis_encoder_select="mdct"
2193 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2194 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp"
2195 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp"
2196 vp6a_decoder_select="vp6_decoder"
2197 vp6f_decoder_select="vp6_decoder"
2198 vp7_decoder_select="h264pred videodsp"
2199 vp8_decoder_select="h264pred videodsp"
2200 vp9_decoder_select="videodsp vp9_parser"
2201 webp_decoder_select="vp8_decoder"
2202 wmalossless_decoder_select="llauddsp"
2203 wmapro_decoder_select="mdct sinewin"
2204 wmav1_decoder_select="mdct sinewin"
2205 wmav1_encoder_select="mdct sinewin"
2206 wmav2_decoder_select="mdct sinewin"
2207 wmav2_encoder_select="mdct sinewin"
2208 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2209 wmv1_decoder_select="h263_decoder"
2210 wmv1_encoder_select="h263_encoder"
2211 wmv2_decoder_select="blockdsp h263_decoder idctdsp intrax8 videodsp"
2212 wmv2_encoder_select="h263_encoder"
2213 wmv3_decoder_select="vc1_decoder"
2214 wmv3image_decoder_select="wmv3_decoder"
2215 zerocodec_decoder_select="zlib"
2216 zlib_decoder_select="zlib"
2217 zlib_encoder_select="zlib"
2218 zmbv_decoder_select="zlib"
2219 zmbv_encoder_select="zlib"
2220
2221 # hardware accelerators
2222 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2223 dxva2_deps="dxva2api_h"
2224 vaapi_deps="va_va_h"
2225 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
2226 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
2227 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
2228 xvmc_deps="X11_extensions_XvMClib_h"
2229
2230 h263_vaapi_hwaccel_deps="vaapi"
2231 h263_vaapi_hwaccel_select="h263_decoder"
2232 h263_vdpau_hwaccel_deps="vdpau"
2233 h263_vdpau_hwaccel_select="h263_decoder"
2234 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2235 h264_dxva2_hwaccel_deps="dxva2"
2236 h264_dxva2_hwaccel_select="h264_decoder"
2237 h264_vaapi_hwaccel_deps="vaapi"
2238 h264_vaapi_hwaccel_select="h264_decoder"
2239 h264_vda_decoder_deps="vda"
2240 h264_vda_decoder_select="h264_decoder"
2241 h264_vda_hwaccel_deps="vda"
2242 h264_vda_hwaccel_select="h264_decoder"
2243 h264_vda_old_hwaccel_deps="vda"
2244 h264_vda_old_hwaccel_select="h264_decoder"
2245 h264_vdpau_decoder_deps="vdpau"
2246 h264_vdpau_decoder_select="h264_decoder"
2247 h264_vdpau_hwaccel_deps="vdpau"
2248 h264_vdpau_hwaccel_select="h264_decoder"
2249 mpeg_vdpau_decoder_deps="vdpau"
2250 mpeg_vdpau_decoder_select="mpeg2video_decoder"
2251 mpeg_xvmc_hwaccel_deps="xvmc"
2252 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2253 mpeg1_vdpau_decoder_deps="vdpau"
2254 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
2255 mpeg1_vdpau_hwaccel_deps="vdpau"
2256 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2257 mpeg1_xvmc_hwaccel_deps="xvmc"
2258 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2259 mpeg2_crystalhd_decoder_select="crystalhd"
2260 mpeg2_dxva2_hwaccel_deps="dxva2"
2261 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2262 mpeg2_vaapi_hwaccel_deps="vaapi"
2263 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2264 mpeg2_vdpau_hwaccel_deps="vdpau"
2265 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2266 mpeg2_xvmc_hwaccel_deps="xvmc"
2267 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2268 mpeg4_crystalhd_decoder_select="crystalhd"
2269 mpeg4_vaapi_hwaccel_deps="vaapi"
2270 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2271 mpeg4_vdpau_decoder_deps="vdpau"
2272 mpeg4_vdpau_decoder_select="mpeg4_decoder"
2273 mpeg4_vdpau_hwaccel_deps="vdpau"
2274 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2275 msmpeg4_crystalhd_decoder_select="crystalhd"
2276 vc1_crystalhd_decoder_select="crystalhd"
2277 vc1_dxva2_hwaccel_deps="dxva2"
2278 vc1_dxva2_hwaccel_select="vc1_decoder"
2279 vc1_vaapi_hwaccel_deps="vaapi"
2280 vc1_vaapi_hwaccel_select="vc1_decoder"
2281 vc1_vdpau_decoder_deps="vdpau"
2282 vc1_vdpau_decoder_select="vc1_decoder"
2283 vc1_vdpau_hwaccel_deps="vdpau"
2284 vc1_vdpau_hwaccel_select="vc1_decoder"
2285 wmv3_crystalhd_decoder_select="crystalhd"
2286 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2287 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2288 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
2289 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2290
2291 # parsers
2292 h264_parser_select="h264_decoder"
2293 hevc_parser_select="hevc_decoder"
2294 mpegvideo_parser_select="mpegvideo"
2295 mpeg4video_parser_select="error_resilience h263dsp mpeg_er mpegvideo qpeldsp"
2296 vc1_parser_select="mpegvideo vc1_decoder"
2297
2298 # external libraries
2299 libaacplus_encoder_deps="libaacplus"
2300 libcelt_decoder_deps="libcelt"
2301 libfaac_encoder_deps="libfaac"
2302 libfaac_encoder_select="audio_frame_queue"
2303 libfdk_aac_decoder_deps="libfdk_aac"
2304 libfdk_aac_encoder_deps="libfdk_aac"
2305 libfdk_aac_encoder_select="audio_frame_queue"
2306 libgme_demuxer_deps="libgme"
2307 libgsm_decoder_deps="libgsm"
2308 libgsm_encoder_deps="libgsm"
2309 libgsm_ms_decoder_deps="libgsm"
2310 libgsm_ms_encoder_deps="libgsm"
2311 libilbc_decoder_deps="libilbc"
2312 libilbc_encoder_deps="libilbc"
2313 libmodplug_demuxer_deps="libmodplug"
2314 libmp3lame_encoder_deps="libmp3lame"
2315 libmp3lame_encoder_select="audio_frame_queue"
2316 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2317 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2318 libopencore_amrnb_encoder_select="audio_frame_queue"
2319 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2320 libopenjpeg_decoder_deps="libopenjpeg"
2321 libopenjpeg_encoder_deps="libopenjpeg"
2322 libopus_decoder_deps="libopus"
2323 libopus_encoder_deps="libopus"
2324 libopus_encoder_select="audio_frame_queue"
2325 libquvi_demuxer_deps="libquvi"
2326 libschroedinger_decoder_deps="libschroedinger"
2327 libschroedinger_encoder_deps="libschroedinger"
2328 libshine_encoder_deps="libshine"
2329 libshine_encoder_select="audio_frame_queue"
2330 libspeex_decoder_deps="libspeex"
2331 libspeex_encoder_deps="libspeex"
2332 libspeex_encoder_select="audio_frame_queue"
2333 libstagefright_h264_decoder_deps="libstagefright_h264"
2334 libtheora_encoder_deps="libtheora"
2335 libtwolame_encoder_deps="libtwolame"
2336 libvo_aacenc_encoder_deps="libvo_aacenc"
2337 libvo_aacenc_encoder_select="audio_frame_queue"
2338 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2339 libvorbis_decoder_deps="libvorbis"
2340 libvorbis_encoder_deps="libvorbis"
2341 libvorbis_encoder_select="audio_frame_queue"
2342 libvpx_vp8_decoder_deps="libvpx"
2343 libvpx_vp8_encoder_deps="libvpx"
2344 libvpx_vp9_decoder_deps="libvpx"
2345 libvpx_vp9_encoder_deps="libvpx"
2346 libwavpack_encoder_deps="libwavpack"
2347 libwebp_encoder_deps="libwebp"
2348 libx264_encoder_deps="libx264"
2349 libx264rgb_encoder_deps="libx264"
2350 libx265_encoder_deps="libx265"
2351 libxavs_encoder_deps="libxavs"
2352 libxvid_encoder_deps="libxvid"
2353 libutvideo_decoder_deps="libutvideo"
2354 libutvideo_encoder_deps="libutvideo"
2355 libzvbi_teletext_decoder_deps="libzvbi"
2356
2357 # demuxers / muxers
2358 ac3_demuxer_select="ac3_parser"
2359 asf_demuxer_select="riffdec"
2360 asf_muxer_select="riffenc"
2361 asf_stream_muxer_select="asf_muxer"
2362 avi_demuxer_select="riffdec exif"
2363 avi_muxer_select="riffenc"
2364 avisynth_demuxer_deps="avisynth"
2365 avisynth_demuxer_select="riffdec"
2366 caf_demuxer_select="riffdec"
2367 dirac_demuxer_select="dirac_parser"
2368 dts_demuxer_select="dca_parser"
2369 dtshd_demuxer_select="dca_parser"
2370 dv_demuxer_select="dvprofile"
2371 dv_muxer_select="dvprofile"
2372 dxa_demuxer_select="riffdec"
2373 eac3_demuxer_select="ac3_parser"
2374 f4v_muxer_select="mov_muxer"
2375 flac_demuxer_select="flac_parser"
2376 hds_muxer_select="flv_muxer"
2377 hls_muxer_select="mpegts_muxer"
2378 image2_alias_pix_demuxer_select="image2_demuxer"
2379 image2_brender_pix_demuxer_select="image2_demuxer"
2380 ipod_muxer_select="mov_muxer"
2381 ismv_muxer_select="mov_muxer"
2382 libnut_demuxer_deps="libnut"
2383 libnut_muxer_deps="libnut"
2384 matroska_audio_muxer_select="matroska_muxer"
2385 matroska_demuxer_select="riffdec"
2386 matroska_demuxer_suggest="bzlib lzo zlib"
2387 matroska_muxer_select="riffenc"
2388 mmf_muxer_select="riffenc"
2389 mov_demuxer_select="riffdec"
2390 mov_demuxer_suggest="zlib"
2391 mov_muxer_select="riffenc rtpenc_chain"
2392 mp3_demuxer_select="mpegaudio_parser"
2393 mp4_muxer_select="mov_muxer"
2394 mpegts_muxer_select="adts_muxer latm_muxer"
2395 mpegtsraw_demuxer_select="mpegts_demuxer"
2396 mxf_d10_muxer_select="mxf_muxer"
2397 nut_muxer_select="riffenc"
2398 nuv_demuxer_select="riffdec"
2399 ogg_demuxer_select="golomb"
2400 psp_muxer_select="mov_muxer"
2401 rtp_demuxer_select="sdp_demuxer"
2402 rtpdec_select="asf_demuxer rm_demuxer rtp_protocol mpegts_demuxer mov_demuxer"
2403 rtsp_demuxer_select="http_protocol rtpdec"
2404 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2405 sap_demuxer_select="sdp_demuxer"
2406 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2407 sdp_demuxer_select="rtpdec"
2408 smoothstreaming_muxer_select="ismv_muxer"
2409 spdif_muxer_select="aac_parser"
2410 tak_demuxer_select="tak_parser"
2411 tg2_muxer_select="mov_muxer"
2412 tgp_muxer_select="mov_muxer"
2413 vobsub_demuxer_select="mpegps_demuxer"
2414 w64_demuxer_select="wav_demuxer"
2415 w64_muxer_select="wav_muxer"
2416 wav_demuxer_select="riffdec"
2417 wav_muxer_select="riffenc"
2418 webm_muxer_select="riffenc"
2419 wtv_demuxer_select="riffdec"
2420 wtv_muxer_select="riffenc"
2421 xmv_demuxer_select="riffdec"
2422 xwma_demuxer_select="riffdec"
2423
2424 # indevs / outdevs
2425 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2426 alsa_outdev_deps="alsa_asoundlib_h"
2427 avfoundation_indev_extralibs="-framework CoreVideo -framework Foundation -framework AVFoundation -framework CoreMedia"
2428 avfoundation_indev_select="avfoundation"
2429 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2430 caca_outdev_deps="libcaca"
2431 decklink_outdev_deps="decklink pthreads"
2432 decklink_outdev_extralibs="-lstdc++"
2433 dshow_indev_deps="IBaseFilter"
2434 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid"
2435 dv1394_indev_deps="dv1394"
2436 dv1394_indev_select="dv_demuxer"
2437 fbdev_indev_deps="linux_fb_h"
2438 fbdev_outdev_deps="linux_fb_h"
2439 gdigrab_indev_deps="CreateDIBSection"
2440 gdigrab_indev_extralibs="-lgdi32"
2441 gdigrab_indev_select="bmp_decoder"
2442 iec61883_indev_deps="libiec61883"
2443 jack_indev_deps="jack_jack_h sem_timedwait"
2444 lavfi_indev_deps="avfilter"
2445 libcdio_indev_deps="libcdio"
2446 libdc1394_indev_deps="libdc1394"
2447 libv4l2_indev_deps="libv4l2"
2448 openal_indev_deps="openal"
2449 opengl_outdev_deps="opengl"
2450 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2451 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2452 pulse_indev_deps="libpulse"
2453 pulse_outdev_deps="libpulse"
2454 qtkit_indev_extralibs="-framework QTKit -framework Foundation -framework QuartzCore"
2455 qtkit_indev_select="qtkit"
2456 sdl_outdev_deps="sdl"
2457 sndio_indev_deps="sndio_h"
2458 sndio_outdev_deps="sndio_h"
2459 v4l_indev_deps="linux_videodev_h"
2460 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2461 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
2462 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2463 vfwcap_indev_extralibs="-lavicap32"
2464 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
2465 xv_outdev_extralibs="-lXv -lX11 -lXext"
2466 x11grab_indev_deps="x11grab"
2467
2468 # protocols
2469 bluray_protocol_deps="libbluray"
2470 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2471 ffrtmpcrypt_protocol_deps_any="gcrypt nettle openssl"
2472 ffrtmpcrypt_protocol_select="tcp_protocol"
2473 ffrtmphttp_protocol_deps="!librtmp_protocol"
2474 ffrtmphttp_protocol_select="http_protocol"
2475 ftp_protocol_select="tcp_protocol"
2476 gopher_protocol_select="network"
2477 http_protocol_select="tcp_protocol"
2478 httpproxy_protocol_select="tcp_protocol"
2479 https_protocol_select="tls_protocol"
2480 librtmp_protocol_deps="librtmp"
2481 librtmpe_protocol_deps="librtmp"
2482 librtmps_protocol_deps="librtmp"
2483 librtmpt_protocol_deps="librtmp"
2484 librtmpte_protocol_deps="librtmp"
2485 libsmbclient_protocol_deps="libsmbclient gplv3"
2486 libssh_protocol_deps="libssh"
2487 mmsh_protocol_select="http_protocol"
2488 mmst_protocol_select="network"
2489 rtmp_protocol_deps="!librtmp_protocol"
2490 rtmp_protocol_select="tcp_protocol"
2491 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2492 rtmps_protocol_deps="!librtmp_protocol"
2493 rtmps_protocol_select="tls_protocol"
2494 rtmpt_protocol_select="ffrtmphttp_protocol"
2495 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2496 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2497 rtp_protocol_select="udp_protocol"
2498 sctp_protocol_deps="struct_sctp_event_subscribe"
2499 sctp_protocol_select="network"
2500 srtp_protocol_select="rtp_protocol"
2501 tcp_protocol_select="network"
2502 tls_protocol_deps_any="openssl gnutls"
2503 tls_protocol_select="tcp_protocol"
2504 udp_protocol_select="network"
2505 unix_protocol_deps="sys_un_h"
2506 unix_protocol_select="network"
2507
2508 # filters
2509 aconvert_filter_deps="swresample"
2510 amovie_filter_deps="avcodec avformat"
2511 aresample_filter_deps="swresample"
2512 ass_filter_deps="libass"
2513 asyncts_filter_deps="avresample"
2514 atempo_filter_deps="avcodec"
2515 atempo_filter_select="rdft"
2516 azmq_filter_deps="libzmq"
2517 blackframe_filter_deps="gpl"
2518 boxblur_filter_deps="gpl"
2519 bs2b_filter_deps="libbs2b"
2520 colormatrix_filter_deps="gpl"
2521 cropdetect_filter_deps="gpl"
2522 dctdnoiz_filter_deps="avcodec"
2523 dctdnoiz_filter_select="dct"
2524 delogo_filter_deps="gpl"
2525 deshake_filter_deps="avcodec"
2526 deshake_filter_select="me_cmp"
2527 drawtext_filter_deps="libfreetype"
2528 ebur128_filter_deps="gpl"
2529 flite_filter_deps="libflite"
2530 frei0r_filter_deps="frei0r dlopen"
2531 frei0r_filter_extralibs='$ldl'
2532 frei0r_src_filter_deps="frei0r dlopen"
2533 frei0r_src_filter_extralibs='$ldl'
2534 geq_filter_deps="gpl"
2535 histeq_filter_deps="gpl"
2536 hqdn3d_filter_deps="gpl"
2537 interlace_filter_deps="gpl"
2538 kerndeint_filter_deps="gpl"
2539 ladspa_filter_deps="ladspa dlopen"
2540 ladspa_filter_extralibs='$ldl'
2541 mcdeint_filter_deps="avcodec gpl"
2542 movie_filter_deps="avcodec avformat"
2543 mp_filter_deps="gpl avcodec swscale inline_asm"
2544 mpdecimate_filter_deps="gpl avcodec"
2545 mpdecimate_filter_select="me_cmp pixblockdsp"
2546 mptestsrc_filter_deps="gpl"
2547 negate_filter_deps="lut_filter"
2548 perspective_filter_deps="gpl"
2549 ocv_filter_deps="libopencv"
2550 owdenoise_filter_deps="gpl"
2551 pan_filter_deps="swresample"
2552 phase_filter_deps="gpl"
2553 pp_filter_deps="gpl postproc"
2554 pullup_filter_deps="gpl"
2555 removelogo_filter_deps="avcodec avformat swscale"
2556 resample_filter_deps="avresample"
2557 sab_filter_deps="gpl swscale"
2558 scale_filter_deps="swscale"
2559 smartblur_filter_deps="gpl swscale"
2560 showspectrum_filter_deps="avcodec"
2561 showspectrum_filter_select="rdft"
2562 spp_filter_deps="gpl avcodec"
2563 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
2564 stereo3d_filter_deps="gpl"
2565 subtitles_filter_deps="avformat avcodec libass"
2566 super2xsai_filter_deps="gpl"
2567 tinterlace_filter_deps="gpl"
2568 vidstabdetect_filter_deps="libvidstab"
2569 vidstabtransform_filter_deps="libvidstab"
2570 pixfmts_super2xsai_test_deps="super2xsai_filter"
2571 tinterlace_merge_test_deps="tinterlace_filter"
2572 tinterlace_pad_test_deps="tinterlace_filter"
2573 zmq_filter_deps="libzmq"
2574 zoompan_filter_deps="swscale"
2575
2576 # examples
2577 avio_reading="avformat avcodec avutil"
2578 avcodec_example_deps="avcodec avutil"
2579 demuxing_decoding_example_deps="avcodec avformat avutil"
2580 filter_audio_example_deps="avfilter avutil"
2581 filtering_audio_example_deps="avfilter avcodec avformat avutil"
2582 filtering_video_example_deps="avfilter avcodec avformat avutil"
2583 metadata_example_deps="avformat avutil"
2584 muxing_example_deps="avcodec avformat avutil swscale"
2585 remuxing_example_deps="avcodec avformat avutil"
2586 resampling_audio_example_deps="avutil swresample"
2587 scaling_video_example_deps="avutil swscale"
2588 transcode_aac_example_deps="avcodec avformat swresample"
2589 transcoding_example_deps="avfilter avcodec avformat avutil"
2590
2591 # libraries, in linking order
2592 avcodec_deps="avutil"
2593 avdevice_deps="avformat avcodec avutil"
2594 avfilter_deps="avutil"
2595 avformat_deps="avcodec avutil"
2596 avresample_deps="avutil"
2597 postproc_deps="avutil gpl"
2598 swresample_deps="avutil"
2599 swscale_deps="avutil"
2600
2601 # programs
2602 ffmpeg_deps="avcodec avfilter avformat swresample"
2603 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
2604                null_filter
2605                setpts_filter trim_filter"
2606 ffplay_deps="avcodec avformat swscale swresample sdl"
2607 ffplay_libs='$sdl_libs'
2608 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
2609 ffprobe_deps="avcodec avformat"
2610 ffserver_deps="avformat fork sarestart"
2611 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
2612
2613 # documentation
2614 podpages_deps="perl"
2615 manpages_deps="perl pod2man"
2616 htmlpages_deps="perl texi2html"
2617 txtpages_deps="perl makeinfo"
2618 doc_deps_any="manpages htmlpages podpages txtpages"
2619
2620 # default parameters
2621
2622 logfile="config.log"
2623
2624 # installation paths
2625 prefix_default="/usr/local"
2626 bindir_default='${prefix}/bin'
2627 datadir_default='${prefix}/share/ffmpeg'
2628 docdir_default='${prefix}/share/doc/ffmpeg'
2629 incdir_default='${prefix}/include'
2630 libdir_default='${prefix}/lib'
2631 mandir_default='${prefix}/share/man'
2632 shlibdir_default="$libdir_default"
2633
2634 # toolchain
2635 ar_default="ar"
2636 cc_default="gcc"
2637 cxx_default="g++"
2638 host_cc_default="gcc"
2639 cp_f="cp -f"
2640 doxygen_default="doxygen"
2641 install="install"
2642 ln_s="ln -s -f"
2643 nm_default="nm -g"
2644 objformat="elf"
2645 pkg_config_default=pkg-config
2646 ranlib_default="ranlib"
2647 strip_default="strip"
2648 yasmexe_default="yasm"
2649 windres_default="windres"
2650
2651 nogas=":"
2652
2653 # OS
2654 target_os_default=$(tolower $(uname -s))
2655 host_os=$target_os_default
2656
2657 # machine
2658 if test "$target_os_default" = aix; then
2659     arch_default=$(uname -p)
2660     strip_default="strip -X32_64"
2661 else
2662     arch_default=$(uname -m)
2663 fi
2664 cpu="generic"
2665
2666 # configurable options
2667 enable $PROGRAM_LIST
2668 enable $DOCUMENT_LIST
2669 enable $EXAMPLE_LIST
2670 enable $(filter_out avresample $LIBRARY_LIST)
2671 enable stripping
2672
2673 enable asm
2674 enable debug
2675 enable doc
2676 enable optimizations
2677 enable runtime_cpudetect
2678 enable safe_bitstream_reader
2679 enable static
2680 enable swscale_alpha
2681
2682 sws_max_filter_size_default=256
2683 set_default sws_max_filter_size
2684
2685 # Enable hwaccels by default.
2686 enable dxva2 vaapi vda vdpau xvmc
2687 enable xlib
2688
2689 # build settings
2690 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2691 LIBPREF="lib"
2692 LIBSUF=".a"
2693 FULLNAME='$(NAME)$(BUILDSUF)'
2694 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
2695 SLIBPREF="lib"
2696 SLIBSUF=".so"
2697 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
2698 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2699 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2700 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2701 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2702 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2703
2704 asflags_filter=echo
2705 cflags_filter=echo
2706 ldflags_filter=echo
2707
2708 AS_C='-c'
2709 AS_O='-o $@'
2710 CC_C='-c'
2711 CC_E='-E -o $@'
2712 CC_O='-o $@'
2713 CXX_C='-c'
2714 CXX_O='-o $@'
2715 LD_O='-o $@'
2716 LD_LIB='-l%'
2717 LD_PATH='-L'
2718 HOSTCC_C='-c'
2719 HOSTCC_E='-E -o $@'
2720 HOSTCC_O='-o $@'
2721 HOSTLD_O='-o $@'
2722
2723 host_libs='-lm'
2724 host_cflags_filter=echo
2725 host_ldflags_filter=echo
2726
2727 target_path='$(CURDIR)'
2728
2729 # since the object filename is not given with the -MM flag, the compiler
2730 # is only able to print the basename, and we must add the path ourselves
2731 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2732 DEPFLAGS='-MM'
2733
2734 # find source path
2735 if test -f configure; then
2736     source_path=.
2737 else
2738     source_path=$(cd $(dirname "$0"); pwd)
2739     echo "$source_path" | grep -q '[[:blank:]]' &&
2740         die "Out of tree builds are impossible with whitespace in source path."
2741     test -e "$source_path/config.h" &&
2742         die "Out of tree builds are impossible with config.h in source dir."
2743 fi
2744
2745 for v in "$@"; do
2746     r=${v#*=}
2747     l=${v%"$r"}
2748     r=$(sh_quote "$r")
2749     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
2750 done
2751
2752 find_things(){
2753     thing=$1
2754     pattern=$2
2755     file=$source_path/$3
2756     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2757 }
2758
2759 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2760 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2761 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2762 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2763 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
2764 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2765 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2766 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2767 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2768 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
2769 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2770
2771 ALL_COMPONENTS="
2772     $BSF_LIST
2773     $DECODER_LIST
2774     $DEMUXER_LIST
2775     $ENCODER_LIST
2776     $FILTER_LIST
2777     $HWACCEL_LIST
2778     $INDEV_LIST
2779     $MUXER_LIST
2780     $OUTDEV_LIST
2781     $PARSER_LIST
2782     $PROTOCOL_LIST
2783 "
2784
2785 for n in $COMPONENT_LIST; do
2786     v=$(toupper ${n%s})_LIST
2787     eval enable \$$v
2788     eval ${n}_if_any="\$$v"
2789 done
2790
2791 enable $ARCH_EXT_LIST
2792
2793 die_unknown(){
2794     echo "Unknown option \"$1\"."
2795     echo "See $0 --help for available options."
2796     exit 1
2797 }
2798
2799 print_3_columns() {
2800     cat | tr ' ' '\n' | sort | pr -r -3 -t
2801 }
2802
2803 show_list() {
2804     suffix=_$1
2805     shift
2806     echo $* | sed s/$suffix//g | print_3_columns
2807     exit 0
2808 }
2809
2810 rand_list(){
2811     IFS=', '
2812     set -- $*
2813     unset IFS
2814     for thing; do
2815         comp=${thing%:*}
2816         prob=${thing#$comp}
2817         prob=${prob#:}
2818         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2819         echo "prob ${prob:-0.5}"
2820         printf '%s\n' $comp
2821     done
2822 }
2823
2824 do_random(){
2825     action=$1
2826     shift
2827     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2828     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2829 }
2830
2831 for opt do
2832     optval="${opt#*=}"
2833     case "$opt" in
2834         --extra-ldflags=*)
2835             add_ldflags $optval
2836         ;;
2837         --extra-ldexeflags=*)
2838             add_ldexeflags $optval
2839         ;;
2840         --extra-libs=*)
2841             add_extralibs $optval
2842         ;;
2843         --disable-devices)
2844             disable $INDEV_LIST $OUTDEV_LIST
2845         ;;
2846         --enable-debug=*)
2847             debuglevel="$optval"
2848         ;;
2849         --disable-programs)
2850             disable $PROGRAM_LIST
2851         ;;
2852         --disable-everything)
2853             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2854         ;;
2855         --disable-all)
2856             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2857             disable $LIBRARY_LIST $PROGRAM_LIST doc
2858         ;;
2859         --enable-random|--disable-random)
2860             action=${opt%%-random}
2861             do_random ${action#--} $COMPONENT_LIST
2862         ;;
2863         --enable-random=*|--disable-random=*)
2864             action=${opt%%-random=*}
2865             do_random ${action#--} $optval
2866         ;;
2867         --enable-*=*|--disable-*=*)
2868             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2869             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2870             eval list=\$$(toupper $thing)_LIST
2871             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2872             list=$(filter "$name" $list)
2873             [ "$list" = "" ] && warn "Option $opt did not match anything"
2874             $action $list
2875         ;;
2876         --enable-?*|--disable-?*)
2877             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2878             if is_in $option $COMPONENT_LIST; then
2879                 test $action = disable && action=unset
2880                 eval $action \$$(toupper ${option%s})_LIST
2881             elif is_in $option $CMDLINE_SELECT; then
2882                 $action $option
2883             else
2884                 die_unknown $opt
2885             fi
2886         ;;
2887         --list-*)
2888             NAME="${opt#--list-}"
2889             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2890             NAME=${NAME%s}
2891             eval show_list $NAME \$$(toupper $NAME)_LIST
2892         ;;
2893         --help|-h) show_help
2894         ;;
2895         --fatal-warnings) enable fatal_warnings
2896         ;;
2897         *)
2898             optname="${opt%%=*}"
2899             optname="${optname#--}"
2900             optname=$(echo "$optname" | sed 's/-/_/g')
2901             if is_in $optname $CMDLINE_SET; then
2902                 eval $optname='$optval'
2903             elif is_in $optname $CMDLINE_APPEND; then
2904                 append $optname "$optval"
2905             else
2906                 die_unknown $opt
2907             fi
2908         ;;
2909     esac
2910 done
2911
2912 disabled logging && logfile=/dev/null
2913
2914 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
2915 set >> $logfile
2916
2917 test -n "$cross_prefix" && enable cross_compile
2918
2919 if enabled cross_compile; then
2920     test -n "$arch" && test -n "$target_os" ||
2921         die "Must specify target arch and OS when cross-compiling"
2922 fi
2923
2924 ar_default="${cross_prefix}${ar_default}"
2925 cc_default="${cross_prefix}${cc_default}"
2926 cxx_default="${cross_prefix}${cxx_default}"
2927 nm_default="${cross_prefix}${nm_default}"
2928 pkg_config_default="${cross_prefix}${pkg_config_default}"
2929 ranlib_default="${cross_prefix}${ranlib_default}"
2930 strip_default="${cross_prefix}${strip_default}"
2931 windres_default="${cross_prefix}${windres_default}"
2932
2933 sysinclude_default="${sysroot}/usr/include"
2934
2935 test -n "$valgrind" && toolchain="valgrind-memcheck"
2936
2937 case "$toolchain" in
2938     clang-asan)
2939         cc_default="clang"
2940         add_cflags  -fsanitize=address
2941         add_ldflags -fsanitize=address
2942     ;;
2943     clang-tsan)
2944         cc_default="clang"
2945         add_cflags  -fsanitize=thread -pie
2946         add_ldflags -fsanitize=thread -pie
2947     ;;
2948     clang-usan)
2949         cc_default="clang"
2950         add_cflags  -fsanitize=undefined
2951         add_ldflags -fsanitize=undefined
2952     ;;
2953     gcc-asan)
2954         cc_default="gcc"
2955         add_cflags  -fsanitize=address
2956         add_ldflags -fsanitize=address
2957     ;;
2958     gcc-tsan)
2959         cc_default="gcc"
2960         add_cflags  -fsanitize=thread -pie -fPIC
2961         add_ldflags -fsanitize=thread -pie -fPIC
2962     ;;
2963     gcc-usan)
2964         cc_default="gcc"
2965         add_cflags  -fsanitize=undefined
2966         add_ldflags -fsanitize=undefined
2967     ;;
2968     valgrind-massif)
2969         target_exec_default=${valgrind:-"valgrind"}
2970         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"
2971     ;;
2972     valgrind-memcheck)
2973         target_exec_default=${valgrind:-"valgrind"}
2974         target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
2975     ;;
2976     msvc)
2977         # Check whether the current MSVC version needs the C99 converter.
2978         # From MSVC 2013 (compiler major version 18) onwards, it does actually
2979         # support enough of C99 to build ffmpeg. Default to the new
2980         # behaviour if the regexp was unable to match anything, since this
2981         # successfully parses the version number of existing supported
2982         # versions that require the converter (MSVC 2010 and 2012).
2983         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
2984         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
2985             cc_default="cl"
2986         else
2987             cc_default="c99wrap cl"
2988         fi
2989         ld_default="link"
2990         nm_default="dumpbin -symbols"
2991         ar_default="lib"
2992         target_os_default="win32"
2993         # Use a relative path for TMPDIR. This makes sure all the
2994         # ffconf temp files are written with a relative path, avoiding
2995         # issues with msys/win32 path conversion for MSVC parameters
2996         # such as -Fo<file> or -out:<file>.
2997         TMPDIR=.
2998     ;;
2999     icl)
3000         cc_default="icl"
3001         ld_default="xilink"
3002         nm_default="dumpbin -symbols"
3003         ar_default="xilib"
3004         target_os_default="win32"
3005         TMPDIR=.
3006     ;;
3007     gcov)
3008         add_cflags  -fprofile-arcs -ftest-coverage
3009         add_ldflags -fprofile-arcs -ftest-coverage
3010     ;;
3011     hardened)
3012         add_cflags  -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -fno-strict-overflow -fstack-protector-all
3013         add_ldflags -Wl,-z,relro -Wl,-z,now
3014     ;;
3015     ?*)
3016         die "Unknown toolchain $toolchain"
3017     ;;
3018 esac
3019
3020 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3021     target_exec target_os yasmexe
3022 enabled cross_compile || host_cc_default=$cc
3023 set_default host_cc
3024
3025 if ! $pkg_config --version >/dev/null 2>&1; then
3026     warn "$pkg_config not found, library detection may fail."
3027     pkg_config=false
3028 fi
3029
3030 if test $doxygen != $doxygen_default && \
3031   ! $doxygen --version >/dev/null 2>&1; then
3032     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3033 fi
3034
3035 exesuf() {
3036     case $1 in
3037         mingw32*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3038     esac
3039 }
3040
3041 EXESUF=$(exesuf $target_os)
3042 HOSTEXESUF=$(exesuf $host_os)
3043
3044 # set temporary file name
3045 : ${TMPDIR:=$TEMPDIR}
3046 : ${TMPDIR:=$TMP}
3047 : ${TMPDIR:=/tmp}
3048
3049 if [ -n "$tempprefix" ] ; then
3050     mktemp(){
3051         echo $tempprefix.${HOSTNAME}.${UID}
3052     }
3053 elif ! check_cmd mktemp -u XXXXXX; then
3054     # simple replacement for missing mktemp
3055     # NOT SAFE FOR GENERAL USE
3056     mktemp(){
3057         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3058     }
3059 fi
3060
3061 tmpfile(){
3062     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
3063         (set -C; exec > $tmp) 2>/dev/null ||
3064         die "Unable to create temporary file in $TMPDIR."
3065     append TMPFILES $tmp
3066     eval $1=$tmp
3067 }
3068
3069 trap 'rm -f -- $TMPFILES' EXIT
3070
3071 tmpfile TMPASM .asm
3072 tmpfile TMPC   .c
3073 tmpfile TMPCPP .cpp
3074 tmpfile TMPE   $EXESUF
3075 tmpfile TMPH   .h
3076 tmpfile TMPM   .m
3077 tmpfile TMPO   .o
3078 tmpfile TMPS   .S
3079 tmpfile TMPSH  .sh
3080 tmpfile TMPV   .ver
3081
3082 unset -f mktemp
3083
3084 chmod +x $TMPE
3085
3086 # make sure we can execute files in $TMPDIR
3087 cat > $TMPSH 2>> $logfile <<EOF
3088 #! /bin/sh
3089 EOF
3090 chmod +x $TMPSH >> $logfile 2>&1
3091 if ! $TMPSH >> $logfile 2>&1; then
3092     cat <<EOF
3093 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3094 variable to another directory and make sure that it is not mounted noexec.
3095 EOF
3096     die "Sanity test failed."
3097 fi
3098
3099 ccc_flags(){
3100     for flag; do
3101         case $flag in
3102             -std=c99)           echo -c99                       ;;
3103             -mcpu=*)            echo -arch ${flag#*=}           ;;
3104             -mieee)             echo -ieee                      ;;
3105             -O*|-fast)          echo $flag                      ;;
3106             -fno-math-errno)    echo -assume nomath_errno       ;;
3107             -g)                 echo -g3                        ;;
3108             -Wall)              echo -msg_enable level2         ;;
3109             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
3110             -Wl,*)              echo $flag                      ;;
3111             -f*|-W*)                                            ;;
3112             *)                  echo $flag                      ;;
3113         esac
3114    done
3115 }
3116
3117 cparser_flags(){
3118     for flag; do
3119         case $flag in
3120             -Wno-switch)             echo -Wno-switch-enum ;;
3121             -Wno-format-zero-length) ;;
3122             -Wdisabled-optimization) ;;
3123             -Wno-pointer-sign)       echo -Wno-other ;;
3124             *)                       echo $flag ;;
3125         esac
3126     done
3127 }
3128
3129 msvc_common_flags(){
3130     for flag; do
3131         case $flag in
3132             # In addition to specifying certain flags under the compiler
3133             # specific filters, they must be specified here as well or else the
3134             # generic catch all at the bottom will print the original flag.
3135             -Wall)                ;;
3136             -std=c99)             ;;
3137             # Common flags
3138             -fomit-frame-pointer) ;;
3139             -g)                   echo -Z7 ;;
3140             -fno-math-errno)      ;;
3141             -fno-common)          ;;
3142             -fno-signed-zeros)    ;;
3143             -fPIC)                ;;
3144             -mthumb)              ;;
3145             -march=*)             ;;
3146             -lz)                  echo zlib.lib ;;
3147             -lavifil32)           echo vfw32.lib ;;
3148             -lavicap32)           echo vfw32.lib user32.lib ;;
3149             -l*)                  echo ${flag#-l}.lib ;;
3150             *)                    echo $flag ;;
3151         esac
3152     done
3153 }
3154
3155 msvc_flags(){
3156     msvc_common_flags "$@"
3157     for flag; do
3158         case $flag in
3159             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3160                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3161                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3162                                        -wd4554 \
3163                                        -wd4273 ;;
3164         esac
3165     done
3166 }
3167
3168 icl_flags(){
3169     msvc_common_flags "$@"
3170     for flag; do
3171         case $flag in
3172             # Despite what Intel's documentation says -Wall, which is supported
3173             # on Windows, does enable remarks so disable them here.
3174             -Wall)                echo $flag -Qdiag-disable:remark ;;
3175             -std=c99)             echo -Qstd=c99 ;;
3176             -flto)                echo -ipo ;;
3177         esac
3178     done
3179 }
3180
3181 icc_flags(){
3182     for flag; do
3183         case $flag in
3184             -flto)                echo -ipo ;;
3185             *)                    echo $flag ;;
3186         esac
3187     done
3188 }
3189
3190 pgi_flags(){
3191     for flag; do
3192         case $flag in
3193             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3194             -fomit-frame-pointer) echo -Mnoframe ;;
3195             -g)                   echo -gopt ;;
3196             *)                    echo $flag ;;
3197         esac
3198     done
3199 }
3200
3201 suncc_flags(){
3202     for flag; do
3203         case $flag in
3204             -march=*|-mcpu=*)
3205                 case "${flag#*=}" in
3206                     native)                   echo -xtarget=native       ;;
3207                     v9|niagara)               echo -xarch=sparc          ;;
3208                     ultrasparc)               echo -xarch=sparcvis       ;;
3209                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3210                     i586|pentium)             echo -xchip=pentium        ;;
3211                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3212                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3213                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3214                     pentium4*)          echo -xtarget=pentium4           ;;
3215                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3216                     *-sse3)             echo -xarch=sse3                 ;;
3217                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3218                     bonnell)                   echo -xarch=ssse3         ;;
3219                     corei7|nehalem)            echo -xtarget=nehalem     ;;
3220                     westmere)                  echo -xtarget=westmere    ;;
3221                     silvermont)                echo -xarch=sse4_2        ;;
3222                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
3223                     core-avx*|ivybridge|haswell|broadwell)
3224                                                echo -xarch=avx           ;;
3225                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
3226                     btver1)                    echo -xarch=amdsse4a      ;;
3227                     btver2|bdver*)             echo -xarch=avx           ;;
3228                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3229                     k8|opteron|athlon64|athlon-fx)
3230                                                echo -xarch=sse2a         ;;
3231                     athlon*)                   echo -xarch=pentium_proa  ;;
3232                 esac
3233                 ;;
3234             -std=c99)             echo -xc99              ;;
3235             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3236             -fPIC)                echo -KPIC -xcode=pic32 ;;
3237             -W*,*)                echo $flag              ;;
3238             -f*-*|-W*|-mimpure-text)                      ;;
3239             -shared)              echo -G                 ;;
3240             *)                    echo $flag              ;;
3241         esac
3242     done
3243 }
3244
3245 tms470_flags(){
3246     for flag; do
3247         case $flag in
3248             -march=*|-mcpu=*)
3249                 case "${flag#*=}" in
3250                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3251                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3252                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3253                     armv6*|arm11*)          echo -mv=6   ;;
3254                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3255                                             echo -mv=5e  ;;
3256                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3257                 esac
3258                 ;;
3259             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3260             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3261             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3262             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3263             -msoft-float)   echo --float_support=vfplib       ;;
3264             -O[0-3]|-mf=*)  echo $flag                        ;;
3265             -g)             echo -g -mn                       ;;
3266             -pds=*)         echo $flag                        ;;
3267             -D*|-I*)        echo $flag                        ;;
3268             --gcc|--abi=*)  echo $flag                        ;;
3269             -me)            echo $flag                        ;;
3270         esac
3271     done
3272 }
3273
3274 probe_cc(){
3275     pfx=$1
3276     _cc=$2
3277
3278     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3279     unset _ld_o _ldflags _ld_lib _ld_path
3280     unset _depflags _DEPCMD _DEPFLAGS
3281     _flags_filter=echo
3282
3283     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
3284         true # no-op to avoid reading stdin in following checks
3285     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3286         _type=llvm_gcc
3287         gcc_extra_ver=$(expr "$($_cc --version | head -n1)" : '.*\((.*)\)')
3288         _ident="llvm-gcc $($_cc -dumpversion) $gcc_extra_ver"
3289         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3290         _cflags_speed='-O3'
3291         _cflags_size='-Os'
3292     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3293         _type=gcc
3294         gcc_version=$($_cc --version | head -n1)
3295         gcc_basever=$($_cc -dumpversion)
3296         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3297         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3298         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3299         if ! $_cc -dumpversion | grep -q '^2\.'; then
3300             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3301         fi
3302         _cflags_speed='-O3'
3303         _cflags_size='-Os'
3304     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3305         _type=icc
3306         _ident=$($_cc --version | head -n1)
3307         _depflags='-MMD'
3308         _cflags_speed='-O3'
3309         _cflags_size='-Os'
3310         _cflags_noopt='-O1'
3311         _flags_filter=icc_flags
3312     elif $_cc -v 2>&1 | grep -q xlc; then
3313         _type=xlc
3314         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3315         _cflags_speed='-O5'
3316         _cflags_size='-O5 -qcompact'
3317     elif $_cc -V 2>/dev/null | grep -q Compaq; then
3318         _type=ccc
3319         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
3320         _DEPFLAGS='-M'
3321         _cflags_speed='-fast'
3322         _cflags_size='-O1'
3323         _flags_filter=ccc_flags
3324     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
3325         test -d "$sysroot" || die "No valid sysroot specified."
3326         _type=armcc
3327         _ident=$($_cc --vsn | head -n1 | sed 's/.*: //')
3328         armcc_conf="$PWD/armcc.conf"
3329         $_cc --arm_linux_configure                 \
3330              --arm_linux_config_file="$armcc_conf" \
3331              --configure_sysroot="$sysroot"        \
3332              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
3333              die "Error creating armcc configuration file."
3334         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
3335         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
3336         as_default="${cross_prefix}gcc"
3337         _depflags='-MMD'
3338         _cflags_speed='-O3'
3339         _cflags_size='-Os'
3340     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
3341         _type=tms470
3342         _ident=$($_cc -version | head -n1 | tr -s ' ')
3343         _flags='--gcc --abi=eabi -me'
3344         _cc_e='-ppl -fe=$@'
3345         _cc_o='-fe=$@'
3346         _depflags='-ppa -ppd=$(@:.o=.d)'
3347         _cflags_speed='-O3 -mf=5'
3348         _cflags_size='-O3 -mf=2'
3349         _flags_filter=tms470_flags
3350     elif $_cc -v 2>&1 | grep -q clang; then
3351         _type=clang
3352         _ident=$($_cc --version | head -n1)
3353         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3354         _cflags_speed='-O3'
3355         _cflags_size='-Os'
3356     elif $_cc -V 2>&1 | grep -q Sun; then
3357         _type=suncc
3358         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
3359         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3360         _DEPFLAGS='-xM1 -xc99'
3361         _ldflags='-std=c99'
3362         _cflags_speed='-O5'
3363         _cflags_size='-O5 -xspace'
3364         _flags_filter=suncc_flags
3365     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3366         _type=pathscale
3367         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3368         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3369         _cflags_speed='-O2'
3370         _cflags_size='-Os'
3371         _flags_filter='filter_out -Wdisabled-optimization'
3372     elif $_cc -v 2>&1 | grep -q Open64; then
3373         _type=open64
3374         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3375         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3376         _cflags_speed='-O2'
3377         _cflags_size='-Os'
3378         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3379     elif $_cc -V 2>&1 | grep -q Portland; then
3380         _type=pgi
3381         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
3382         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
3383         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
3384         _cflags_size="-O2 -Munroll=c:1 $opt_common"
3385         _cflags_noopt="-O"
3386         _flags_filter=pgi_flags
3387     elif $_cc 2>&1 | grep -q Microsoft; then
3388         _type=msvc
3389         _ident=$($cc 2>&1 | head -n1)
3390         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
3391         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
3392         _cflags_speed="-O2"
3393         _cflags_size="-O1"
3394         if $_cc 2>&1 | grep -q Linker; then
3395             _ld_o='-out:$@'
3396         else
3397             _ld_o='-Fe$@'
3398         fi
3399         _cc_o='-Fo$@'
3400         _cc_e='-P -Fi$@'
3401         _flags_filter=msvc_flags
3402         _ld_lib='lib%.a'
3403         _ld_path='-libpath:'
3404         _flags='-nologo'
3405         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -Dinline=__inline -FIstdlib.h -Dstrtoll=_strtoi64'
3406         if [ $pfx = hostcc ]; then
3407             append _cflags -Dsnprintf=_snprintf
3408         fi
3409         disable stripping
3410     elif $_cc 2>&1 | grep -q Intel; then
3411         _type=icl
3412         _ident=$($cc 2>&1 | head -n1)
3413         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3414         # Not only is O3 broken on 13.x+ but it is slower on all previous
3415         # versions (tested) as well.
3416         _cflags_speed="-O2"
3417         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3418         if $_cc 2>&1 | grep -q Linker; then
3419             _ld_o='-out:$@'
3420         else
3421             _ld_o='-Fe$@'
3422         fi
3423         _cc_o='-Fo$@'
3424         _cc_e='-P'
3425         _flags_filter=icl_flags
3426         _ld_lib='lib%.a'
3427         _ld_path='-libpath:'
3428         # -Qdiag-error to make icl error when seeing certain unknown arguments
3429         _flags='-nologo -Qdiag-error:4044,10157'
3430         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
3431         # with MSVC which enables it by default.
3432         _cflags='-D_USE_MATH_DEFINES -FIstdlib.h -Dstrtoll=_strtoi64 -Qms0 -Qvec- -Qsimd- -GS -fp:precise'
3433         if [ $pfx = hostcc ]; then
3434             append _cflags -Dsnprintf=_snprintf
3435         fi
3436     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3437         _type=cparser
3438         _ident=$($_cc --version | head -n1)
3439         _depflags='-MMD'
3440         _cflags_speed='-O4'
3441         _cflags_size='-O2'
3442         _flags_filter=cparser_flags
3443     fi
3444
3445     eval ${pfx}_type=\$_type
3446     eval ${pfx}_ident=\$_ident
3447 }
3448
3449 set_ccvars(){
3450     eval ${1}_C=\${_cc_c-\${${1}_C}}
3451     eval ${1}_E=\${_cc_e-\${${1}_E}}
3452     eval ${1}_O=\${_cc_o-\${${1}_O}}
3453
3454     if [ -n "$_depflags" ]; then
3455         eval ${1}_DEPFLAGS=\$_depflags
3456     else
3457         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3458         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3459         eval DEP${1}FLAGS=\$_flags
3460     fi
3461 }
3462
3463 probe_cc cc "$cc"
3464 cflags_filter=$_flags_filter
3465 cflags_speed=$_cflags_speed
3466 cflags_size=$_cflags_size
3467 cflags_noopt=$_cflags_noopt
3468 add_cflags $_flags $_cflags
3469 cc_ldflags=$_ldflags
3470 set_ccvars CC
3471
3472 probe_cc hostcc "$host_cc"
3473 host_cflags_filter=$_flags_filter
3474 add_host_cflags  $_flags $_cflags
3475 set_ccvars HOSTCC
3476
3477 test -n "$cc_type" && enable $cc_type ||
3478     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3479
3480 : ${as_default:=$cc}
3481 : ${dep_cc_default:=$cc}
3482 : ${ld_default:=$cc}
3483 : ${host_ld_default:=$host_cc}
3484 set_default ar as dep_cc ld host_ld windres
3485
3486 probe_cc as "$as"
3487 asflags_filter=$_flags_filter
3488 add_asflags $_flags $_cflags
3489 set_ccvars AS
3490
3491 probe_cc ld "$ld"
3492 ldflags_filter=$_flags_filter
3493 add_ldflags $_flags $_ldflags
3494 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3495 LD_O=${_ld_o-$LD_O}
3496 LD_LIB=${_ld_lib-$LD_LIB}
3497 LD_PATH=${_ld_path-$LD_PATH}
3498
3499 probe_cc hostld "$host_ld"
3500 host_ldflags_filter=$_flags_filter
3501 add_host_ldflags $_flags $_ldflags
3502 HOSTLD_O=${_ld_o-$HOSTLD_O}
3503
3504 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3505     probe_cc depcc "$dep_cc"
3506     CCDEP=${_DEPCMD:-$DEPCMD}
3507     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3508     DEPCCFLAGS=$_flags
3509 fi
3510
3511 if $ar 2>&1 | grep -q Microsoft; then
3512     arflags="-nologo"
3513     ar_o='-out:$@'
3514 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3515     arflags="rq"
3516     ar_o='$@'
3517 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3518     arflags='-Xany -r -c'
3519     ar_o='$@'
3520 else
3521     arflags="rc"
3522     ar_o='$@'
3523 fi
3524
3525 add_cflags $extra_cflags
3526 add_cxxflags $extra_cxxflags
3527 add_asflags $extra_cflags
3528
3529 if test -n "$sysroot"; then
3530     case "$cc_type" in
3531         gcc|llvm_gcc|clang)
3532             add_cppflags --sysroot="$sysroot"
3533             add_ldflags --sysroot="$sysroot"
3534 # On Darwin --sysroot may be ignored, -isysroot always affects headers and linking
3535             add_cppflags -isysroot "$sysroot"
3536             add_ldflags -isysroot "$sysroot"
3537         ;;
3538         tms470)
3539             add_cppflags -I"$sysinclude"
3540             add_ldflags  --sysroot="$sysroot"
3541         ;;
3542     esac
3543 fi
3544
3545 if test "$cpu" = host; then
3546     enabled cross_compile &&
3547         die "--cpu=host makes no sense when cross-compiling."
3548
3549     case "$cc_type" in
3550         gcc|llvm_gcc)
3551             check_native(){
3552                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3553                 sed -n "/cc1.*$1=/{
3554                             s/.*$1=\\([^ ]*\\).*/\\1/
3555                             p
3556                             q
3557                         }" $TMPE
3558             }
3559             cpu=$(check_native -march || check_native -mcpu)
3560         ;;
3561     esac
3562
3563     test "${cpu:-host}" = host &&
3564         die "--cpu=host not supported with compiler $cc"
3565 fi
3566
3567 # Deal with common $arch aliases
3568 case "$arch" in
3569     aarch64|arm64)
3570         arch="aarch64"
3571     ;;
3572     arm*|iPad*|iPhone*)
3573         arch="arm"
3574     ;;
3575     mips*|IP*)
3576         arch="mips"
3577     ;;
3578     parisc*|hppa*)
3579         arch="parisc"
3580     ;;
3581     "Power Macintosh"|ppc*|powerpc*)
3582         arch="ppc"
3583     ;;
3584     s390|s390x)
3585         arch="s390"
3586     ;;
3587     sh4|sh)
3588         arch="sh4"
3589     ;;
3590     sun4u|sparc*)
3591         arch="sparc"
3592     ;;
3593     tilegx|tile-gx)
3594         arch="tilegx"
3595     ;;
3596     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
3597         arch="x86"
3598     ;;
3599 esac
3600
3601 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3602 enable $arch
3603
3604 # Add processor-specific flags
3605 if enabled aarch64; then
3606
3607     case $cpu in
3608         armv*)
3609             cpuflags="-march=$cpu"
3610         ;;
3611         *)
3612             cpuflags="-mcpu=$cpu"
3613         ;;
3614     esac
3615
3616 elif enabled alpha; then
3617
3618     cpuflags="-mcpu=$cpu"
3619
3620 elif enabled arm; then
3621
3622     check_arm_arch() {
3623         check_cpp_condition stddef.h \
3624             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3625             $cpuflags
3626     }
3627
3628     probe_arm_arch() {
3629         if   check_arm_arch 4;        then echo armv4;
3630         elif check_arm_arch 4T;       then echo armv4t;
3631         elif check_arm_arch 5;        then echo armv5;
3632         elif check_arm_arch 5E;       then echo armv5e;
3633         elif check_arm_arch 5T;       then echo armv5t;
3634         elif check_arm_arch 5TE;      then echo armv5te;
3635         elif check_arm_arch 5TEJ;     then echo armv5te;
3636         elif check_arm_arch 6;        then echo armv6;
3637         elif check_arm_arch 6J;       then echo armv6j;
3638         elif check_arm_arch 6K;       then echo armv6k;
3639         elif check_arm_arch 6Z;       then echo armv6z;
3640         elif check_arm_arch 6ZK;      then echo armv6zk;
3641         elif check_arm_arch 6T2;      then echo armv6t2;
3642         elif check_arm_arch 7;        then echo armv7;
3643         elif check_arm_arch 7A  7_A;  then echo armv7-a;
3644         elif check_arm_arch 7R  7_R;  then echo armv7-r;
3645         elif check_arm_arch 7M  7_M;  then echo armv7-m;
3646         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
3647         elif check_arm_arch 8A  8_A;  then echo armv8-a;
3648         fi
3649     }
3650
3651     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3652
3653     case $cpu in
3654         armv*)
3655             cpuflags="-march=$cpu"
3656             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3657         ;;
3658         *)
3659             cpuflags="-mcpu=$cpu"
3660             case $cpu in
3661                 cortex-a*)                               subarch=armv7a  ;;
3662                 cortex-r*)                               subarch=armv7r  ;;
3663                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3664                 arm11*)                                  subarch=armv6   ;;
3665                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3666                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3667                 *)                             subarch=$(probe_arm_arch) ;;
3668             esac
3669         ;;
3670     esac
3671
3672     case "$subarch" in
3673         armv5t*)    enable fast_clz                ;;
3674         armv[6-8]*)
3675             enable fast_clz
3676             disabled fast_unaligned || enable fast_unaligned
3677             ;;
3678     esac
3679
3680 elif enabled avr32; then
3681
3682     case $cpu in
3683         ap7[02]0[0-2])
3684             subarch="avr32_ap"
3685             cpuflags="-mpart=$cpu"
3686         ;;
3687         ap)
3688             subarch="avr32_ap"
3689             cpuflags="-march=$cpu"
3690         ;;
3691         uc3[ab]*)
3692             subarch="avr32_uc"
3693             cpuflags="-mcpu=$cpu"
3694         ;;
3695         uc)
3696             subarch="avr32_uc"
3697             cpuflags="-march=$cpu"
3698         ;;
3699     esac
3700
3701 elif enabled bfin; then
3702
3703     cpuflags="-mcpu=$cpu"
3704
3705 elif enabled mips; then
3706
3707     cpuflags="-march=$cpu"
3708
3709     case $cpu in
3710         24kc)
3711             disable mipsfpu
3712             disable mipsdspr1
3713             disable mipsdspr2
3714         ;;
3715         24kf*)
3716             disable mipsdspr1
3717             disable mipsdspr2
3718         ;;
3719         24kec|34kc|1004kc)
3720             disable mipsfpu
3721             disable mipsdspr2
3722         ;;
3723         24kef*|34kf*|1004kf*)
3724             disable mipsdspr2
3725         ;;
3726         74kc)
3727             disable mipsfpu
3728         ;;
3729     esac
3730
3731 elif enabled ppc; then
3732
3733     disable ldbrx
3734     disable vsx
3735
3736     case $(tolower $cpu) in
3737         601|ppc601|powerpc601)
3738             cpuflags="-mcpu=601"
3739             disable altivec
3740         ;;
3741         603*|ppc603*|powerpc603*)
3742             cpuflags="-mcpu=603"
3743             disable altivec
3744         ;;
3745         604*|ppc604*|powerpc604*)
3746             cpuflags="-mcpu=604"
3747             disable altivec
3748         ;;
3749         g3|75*|ppc75*|powerpc75*)
3750             cpuflags="-mcpu=750"
3751             disable altivec
3752         ;;
3753         g4|745*|ppc745*|powerpc745*)
3754             cpuflags="-mcpu=7450"
3755         ;;
3756         74*|ppc74*|powerpc74*)
3757             cpuflags="-mcpu=7400"
3758         ;;
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