Merge commit 'b396bbad100a7493691d09b8dceba91e3cd28e2e'
[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 [$LDFLAGS]
302   --extra-libs=ELIBS       add ELIBS [$ELIBS]
303   --extra-version=STRING   version string suffix []
304   --optflags=OPTFLAGS      override optimization-related compiler flags
305   --build-suffix=SUFFIX    library name suffix []
306   --enable-pic             build position-independent code
307   --enable-thumb           compile for Thumb instruction set
308   --enable-lto             use link-time optimization
309
310 Advanced options (experts only):
311   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
312   --disable-symver         disable symbol versioning
313   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
314   --disable-safe-bitstream-reader
315                            disable buffer boundary checking in bitreaders
316                            (faster, but may crash)
317   --enable-memalign-hack   emulate memalign, interferes with memory debuggers
318   --enable-sram            allow use of on-chip SRAM
319   --sws-max-filter-size=N  the max filter size swscale uses [$sws_max_filter_size_default]
320
321 Optimization options (experts only):
322   --disable-asm            disable all assembly optimizations
323   --disable-altivec        disable AltiVec optimizations
324   --disable-amd3dnow       disable 3DNow! optimizations
325   --disable-amd3dnowext    disable 3DNow! extended optimizations
326   --disable-mmx            disable MMX optimizations
327   --disable-mmxext         disable MMXEXT optimizations
328   --disable-sse            disable SSE optimizations
329   --disable-sse2           disable SSE2 optimizations
330   --disable-sse3           disable SSE3 optimizations
331   --disable-ssse3          disable SSSE3 optimizations
332   --disable-sse4           disable SSE4 optimizations
333   --disable-sse42          disable SSE4.2 optimizations
334   --disable-avx            disable AVX optimizations
335   --disable-xop            disable XOP optimizations
336   --disable-fma3           disable FMA3 optimizations
337   --disable-fma4           disable FMA4 optimizations
338   --disable-avx2           disable AVX2 optimizations
339   --disable-armv5te        disable armv5te optimizations
340   --disable-armv6          disable armv6 optimizations
341   --disable-armv6t2        disable armv6t2 optimizations
342   --disable-vfp            disable VFP optimizations
343   --disable-neon           disable NEON optimizations
344   --disable-inline-asm     disable use of inline assembly
345   --disable-yasm           disable use of nasm/yasm assembly
346   --disable-mips32r2       disable MIPS32R2 optimizations
347   --disable-mipsdspr1      disable MIPS DSP ASE R1 optimizations
348   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
349   --disable-mipsfpu        disable floating point MIPS optimizations
350   --disable-fast-unaligned consider unaligned accesses slow
351
352 Developer options (useful when working on FFmpeg itself):
353   --disable-debug          disable debugging symbols
354   --enable-debug=LEVEL     set the debug level [$debuglevel]
355   --disable-optimizations  disable compiler optimizations
356   --enable-extra-warnings  enable more compiler warnings
357   --disable-stripping      disable stripping of executables and shared libraries
358   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
359                            2 causes a slowdown at runtime.
360   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
361   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
362                            leaks and errors, using the specified valgrind binary.
363                            Cannot be combined with --target-exec
364   --enable-ftrapv          Trap arithmetic overflows
365   --samples=PATH           location of test samples for FATE, if not set use
366                            \$FATE_SAMPLES at make invocation time.
367   --enable-neon-clobber-test check NEON registers for clobbering (should be
368                            used only for debugging purposes)
369   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
370                            should be used only for debugging purposes)
371   --enable-random          randomly enable/disable components
372   --disable-random
373   --enable-random=LIST     randomly enable/disable specific components or
374   --disable-random=LIST    component groups. LIST is a comma-separated list
375                            of NAME[:PROB] entries where NAME is a component
376                            (group) and PROB the probability associated with
377                            NAME (default 0.5).
378   --random-seed=VALUE      seed value for --enable/disable-random
379
380 NOTE: Object files are built at the place where configure is launched.
381 EOF
382   exit 0
383 }
384
385 quotes='""'
386
387 log(){
388     echo "$@" >> $logfile
389 }
390
391 log_file(){
392     log BEGIN $1
393     pr -n -t $1 >> $logfile
394     log END $1
395 }
396
397 echolog(){
398     log "$@"
399     echo "$@"
400 }
401
402 warn(){
403     log "WARNING: $*"
404     WARNINGS="${WARNINGS}WARNING: $*\n"
405 }
406
407 die(){
408     echolog "$@"
409     cat <<EOF
410
411 If you think configure made a mistake, make sure you are using the latest
412 version from Git.  If the latest version fails, report the problem to the
413 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
414 EOF
415     if disabled logging; then
416         cat <<EOF
417 Rerun configure with logging enabled (do not use --disable-logging), and
418 include the log this produces with your report.
419 EOF
420     else
421         cat <<EOF
422 Include the log file "$logfile" produced by configure as this will help
423 solve the problem.
424 EOF
425     fi
426     exit 1
427 }
428
429 # Avoid locale weirdness, besides we really just want to translate ASCII.
430 toupper(){
431     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
432 }
433
434 tolower(){
435     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
436 }
437
438 c_escape(){
439     echo "$*" | sed 's/["\\]/\\\0/g'
440 }
441
442 sh_quote(){
443     v=$(echo "$1" | sed "s/'/'\\\\''/g")
444     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
445     echo "$v"
446 }
447
448 cleanws(){
449     echo "$@" | sed 's/^ *//;s/  */ /g;s/ *$//;s/\\r//g'
450 }
451
452 filter(){
453     pat=$1
454     shift
455     for v; do
456         eval "case $v in $pat) echo $v ;; esac"
457     done
458 }
459
460 filter_out(){
461     pat=$1
462     shift
463     for v; do
464         eval "case $v in $pat) ;; *) echo $v ;; esac"
465     done
466 }
467
468 map(){
469     m=$1
470     shift
471     for v; do eval $m; done
472 }
473
474 add_suffix(){
475     suffix=$1
476     shift
477     for v; do echo ${v}${suffix}; done
478 }
479
480 set_all(){
481     value=$1
482     shift
483     for var in $*; do
484         eval $var=$value
485     done
486 }
487
488 set_weak(){
489     value=$1
490     shift
491     for var; do
492         eval : \${$var:=$value}
493     done
494 }
495
496 sanitize_var_name(){
497     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
498 }
499
500 set_safe(){
501     var=$1
502     shift
503     eval $(sanitize_var_name "$var")='$*'
504 }
505
506 get_safe(){
507     eval echo \$$(sanitize_var_name "$1")
508 }
509
510 pushvar(){
511     for pvar in $*; do
512         eval level=\${${pvar}_level:=0}
513         eval ${pvar}_${level}="\$$pvar"
514         eval ${pvar}_level=$(($level+1))
515     done
516 }
517
518 popvar(){
519     for pvar in $*; do
520         eval level=\${${pvar}_level:-0}
521         test $level = 0 && continue
522         eval level=$(($level-1))
523         eval $pvar="\${${pvar}_${level}}"
524         eval ${pvar}_level=$level
525         eval unset ${pvar}_${level}
526     done
527 }
528
529 enable(){
530     set_all yes $*
531 }
532
533 disable(){
534     set_all no $*
535 }
536
537 enable_weak(){
538     set_weak yes $*
539 }
540
541 disable_weak(){
542     set_weak no $*
543 }
544
545 enable_safe(){
546     for var; do
547         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
548     done
549 }
550
551 disable_safe(){
552     for var; do
553         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
554     done
555 }
556
557 do_enable_deep(){
558     for var; do
559         enabled $var && continue
560         eval sel="\$${var}_select"
561         eval sgs="\$${var}_suggest"
562         pushvar var sgs
563         enable_deep $sel
564         popvar sgs
565         enable_deep_weak $sgs
566         popvar var
567     done
568 }
569
570 enable_deep(){
571     do_enable_deep $*
572     enable $*
573 }
574
575 enable_deep_weak(){
576     for var; do
577         disabled $var && continue
578         pushvar var
579         do_enable_deep $var
580         popvar var
581         enable_weak $var
582     done
583 }
584
585 enabled(){
586     test "${1#!}" = "$1" && op== || op=!=
587     eval test "x\$${1#!}" $op "xyes"
588 }
589
590 disabled(){
591     test "${1#!}" = "$1" && op== || op=!=
592     eval test "x\$${1#!}" $op "xno"
593 }
594
595 enabled_all(){
596     for opt; do
597         enabled $opt || return 1
598     done
599 }
600
601 disabled_all(){
602     for opt; do
603         disabled $opt || return 1
604     done
605 }
606
607 enabled_any(){
608     for opt; do
609         enabled $opt && return 0
610     done
611 }
612
613 disabled_any(){
614     for opt; do
615         disabled $opt && return 0
616     done
617     return 1
618 }
619
620 set_default(){
621     for opt; do
622         eval : \${$opt:=\$${opt}_default}
623     done
624 }
625
626 is_in(){
627     value=$1
628     shift
629     for var in $*; do
630         [ $var = $value ] && return 0
631     done
632     return 1
633 }
634
635 do_check_deps(){
636     for cfg; do
637         cfg="${cfg#!}"
638         enabled ${cfg}_checking && die "Circular dependency for $cfg."
639         disabled ${cfg}_checking && continue
640         enable ${cfg}_checking
641         append allopts $cfg
642
643         eval dep_all="\$${cfg}_deps"
644         eval dep_any="\$${cfg}_deps_any"
645         eval dep_sel="\$${cfg}_select"
646         eval dep_sgs="\$${cfg}_suggest"
647         eval dep_ifa="\$${cfg}_if"
648         eval dep_ifn="\$${cfg}_if_any"
649
650         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
651         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
652         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
653
654         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
655         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
656         enabled_all  $dep_all || disable $cfg
657         enabled_any  $dep_any || disable $cfg
658         disabled_any $dep_sel && disable $cfg
659
660         if enabled $cfg; then
661             enable_deep $dep_sel
662             enable_deep_weak $dep_sgs
663         fi
664
665         disable ${cfg}_checking
666     done
667 }
668
669 check_deps(){
670     unset allopts
671
672     do_check_deps "$@"
673
674     for cfg in $allopts; do
675         enabled $cfg || continue
676         eval dep_extralibs="\$${cfg}_extralibs"
677         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
678     done
679 }
680
681 print_config(){
682     pfx=$1
683     files=$2
684     shift 2
685     map 'eval echo "$v \${$v:-no}"' "$@" |
686     awk "BEGIN { split(\"$files\", files) }
687         {
688             c = \"$pfx\" toupper(\$1);
689             v = \$2;
690             sub(/yes/, 1, v);
691             sub(/no/,  0, v);
692             for (f in files) {
693                 file = files[f];
694                 if (file ~ /\\.h\$/) {
695                     printf(\"#define %s %d\\n\", c, v) >>file;
696                 } else if (file ~ /\\.asm\$/) {
697                     printf(\"%%define %s %d\\n\", c, v) >>file;
698                 } else if (file ~ /\\.mak\$/) {
699                     n = -v ? \"\" : \"!\";
700                     printf(\"%s%s=yes\\n\", n, c) >>file;
701                 } else if (file ~ /\\.texi\$/) {
702                     pre = -v ? \"\" : \"@c \";
703                     yesno = \$2;
704                     c2 = tolower(c);
705                     gsub(/_/, \"-\", c2);
706                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
707                 }
708             }
709         }"
710 }
711
712 print_enabled(){
713     suf=$1
714     shift
715     for v; do
716         enabled $v && printf "%s\n" ${v%$suf};
717     done
718 }
719
720 append(){
721     var=$1
722     shift
723     eval "$var=\"\$$var $*\""
724 }
725
726 prepend(){
727     var=$1
728     shift
729     eval "$var=\"$* \$$var\""
730 }
731
732 unique(){
733     var=$1
734     uniq_list=""
735     for tok in $(eval echo \$$var); do
736         uniq_list="$(filter_out $tok $uniq_list) $tok"
737     done
738     eval "$var=\"${uniq_list}\""
739 }
740
741 add_cppflags(){
742     append CPPFLAGS "$@"
743 }
744
745 add_cflags(){
746     append CFLAGS $($cflags_filter "$@")
747 }
748
749 add_cxxflags(){
750     append CXXFLAGS $($cflags_filter "$@")
751 }
752
753 add_asflags(){
754     append ASFLAGS $($asflags_filter "$@")
755 }
756
757 add_ldflags(){
758     append LDFLAGS $($ldflags_filter "$@")
759 }
760
761 add_stripflags(){
762     append ASMSTRIPFLAGS "$@"
763 }
764
765 add_extralibs(){
766     prepend extralibs $($ldflags_filter "$@")
767 }
768
769 add_host_cppflags(){
770     append host_cppflags "$@"
771 }
772
773 add_host_cflags(){
774     append host_cflags $($host_cflags_filter "$@")
775 }
776
777 add_host_ldflags(){
778     append host_ldflags $($host_ldflags_filter "$@")
779 }
780
781 add_compat(){
782     append compat_objs $1
783     shift
784     map 'add_cppflags -D$v' "$@"
785 }
786
787 check_cmd(){
788     log "$@"
789     "$@" >> $logfile 2>&1
790 }
791
792 check_stat(){
793     log check_stat "$@"
794     stat "$1" >> $logfile 2>&1
795 }
796
797 cc_o(){
798     eval printf '%s\\n' $CC_O
799 }
800
801 cc_e(){
802     eval printf '%s\\n' $CC_E
803 }
804
805 check_cc(){
806     log check_cc "$@"
807     cat > $TMPC
808     log_file $TMPC
809     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
810 }
811
812 check_cxx(){
813     log check_cxx "$@"
814     cat > $TMPCPP
815     log_file $TMPCPP
816     check_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
817 }
818
819 check_oc(){
820     log check_oc "$@"
821     cat > $TMPM
822     log_file $TMPM
823     check_cmd $cc -Werror=missing-prototypes $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPM
824 }
825
826 check_cpp(){
827     log check_cpp "$@"
828     cat > $TMPC
829     log_file $TMPC
830     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
831 }
832
833 as_o(){
834     eval printf '%s\\n' $AS_O
835 }
836
837 check_as(){
838     log check_as "$@"
839     cat > $TMPS
840     log_file $TMPS
841     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
842 }
843
844 check_inline_asm(){
845     log check_inline_asm "$@"
846     name="$1"
847     code="$2"
848     shift 2
849     disable $name
850     check_cc "$@" <<EOF && enable $name
851 void foo(void){ __asm__ volatile($code); }
852 EOF
853 }
854
855 check_insn(){
856     log check_insn "$@"
857     check_inline_asm ${1}_inline "\"$2\""
858     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
859 }
860
861 check_yasm(){
862     log check_yasm "$@"
863     echo "$1" > $TMPS
864     log_file $TMPS
865     shift 1
866     check_cmd $yasmexe $YASMFLAGS -Werror "$@" -o $TMPO $TMPS
867 }
868
869 ld_o(){
870     eval printf '%s\\n' $LD_O
871 }
872
873 check_ld(){
874     log check_ld "$@"
875     type=$1
876     shift 1
877     flags=$(filter_out '-l*|*.so' $@)
878     libs=$(filter '-l*|*.so' $@)
879     check_$type $($cflags_filter $flags) || return
880     flags=$($ldflags_filter $flags)
881     libs=$($ldflags_filter $libs)
882     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
883 }
884
885 print_include(){
886     hdr=$1
887     test "${hdr%.h}" = "${hdr}" &&
888         echo "#include $hdr"    ||
889         echo "#include <$hdr>"
890 }
891
892 check_code(){
893     log check_code "$@"
894     check=$1
895     headers=$2
896     code=$3
897     shift 3
898     {
899         for hdr in $headers; do
900             print_include $hdr
901         done
902         echo "int main(void) { $code; return 0; }"
903     } | check_$check "$@"
904 }
905
906 check_cppflags(){
907     log check_cppflags "$@"
908     check_cc "$@" <<EOF && append CPPFLAGS "$@"
909 int x;
910 EOF
911 }
912
913 test_cflags(){
914     log test_cflags "$@"
915     set -- $($cflags_filter "$@")
916     check_cc "$@" <<EOF
917 int x;
918 EOF
919 }
920
921 check_cflags(){
922     log check_cflags "$@"
923     test_cflags "$@" && add_cflags "$@"
924 }
925
926 check_cxxflags(){
927     log check_cxxflags "$@"
928     set -- $($cflags_filter "$@")
929     check_cxx "$@" <<EOF && append CXXFLAGS "$@"
930 int x;
931 EOF
932 }
933
934 test_ldflags(){
935     log test_ldflags "$@"
936     check_ld "cc" "$@" <<EOF
937 int main(void){ return 0; }
938 EOF
939 }
940
941 check_ldflags(){
942     log check_ldflags "$@"
943     test_ldflags "$@" && add_ldflags "$@"
944 }
945
946 test_stripflags(){
947     log test_stripflags "$@"
948     # call check_cc to get a fresh TMPO
949     check_cc <<EOF
950 int main(void) { return 0; }
951 EOF
952     check_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
953 }
954
955 check_stripflags(){
956     log check_stripflags "$@"
957     test_stripflags "$@" && add_stripflags "$@"
958 }
959
960 check_header(){
961     log check_header "$@"
962     header=$1
963     shift
964     disable_safe $header
965     check_cpp "$@" <<EOF && enable_safe $header
966 #include <$header>
967 int x;
968 EOF
969 }
970
971 check_header_oc(){
972     log check_header_oc "$@"
973     rm -f -- "$TMPO"
974     header=$1
975     shift
976     disable_safe $header
977     {
978        echo "#include <$header>"
979        echo "int main(void) { return 0; }"
980     } | check_oc && check_stat "$TMPO" && enable_safe $headers
981 }
982
983 check_func(){
984     log check_func "$@"
985     func=$1
986     shift
987     disable $func
988     check_ld "cc" "$@" <<EOF && enable $func
989 extern int $func();
990 int main(void){ $func(); }
991 EOF
992 }
993
994 check_mathfunc(){
995     log check_mathfunc "$@"
996     func=$1
997     narg=$2
998     shift 2
999     test $narg = 2 && args="f, g" || args="f"
1000     disable $func
1001     check_ld "cc" "$@" <<EOF && enable $func
1002 #include <math.h>
1003 float foo(float f, float g) { return $func($args); }
1004 int main(void){ return (int) foo; }
1005 EOF
1006 }
1007
1008 check_func_headers(){
1009     log check_func_headers "$@"
1010     headers=$1
1011     funcs=$2
1012     shift 2
1013     {
1014         for hdr in $headers; do
1015             print_include $hdr
1016         done
1017         for func in $funcs; do
1018             echo "long check_$func(void) { return (long) $func; }"
1019         done
1020         echo "int main(void) { return 0; }"
1021     } | check_ld "cc" "$@" && enable $funcs && enable_safe $headers
1022 }
1023
1024 check_class_headers_cpp(){
1025     log check_class_headers_cpp "$@"
1026     headers=$1
1027     classes=$2
1028     shift 2
1029     {
1030         for hdr in $headers; do
1031             echo "#include <$hdr>"
1032         done
1033         echo "int main(void) { "
1034         i=1
1035         for class in $classes; do
1036             echo "$class obj$i;"
1037             i=$(expr $i + 1)
1038         done
1039         echo "return 0; }"
1040     } | check_ld "cxx" "$@" && enable $funcs && enable_safe $headers
1041 }
1042
1043 check_cpp_condition(){
1044     log check_cpp_condition "$@"
1045     header=$1
1046     condition=$2
1047     shift 2
1048     check_cpp "$@" <<EOF
1049 #include <$header>
1050 #if !($condition)
1051 #error "unsatisfied condition: $condition"
1052 #endif
1053 EOF
1054 }
1055
1056 check_lib(){
1057     log check_lib "$@"
1058     header="$1"
1059     func="$2"
1060     shift 2
1061     check_header $header && check_func $func "$@" && add_extralibs "$@"
1062 }
1063
1064 check_lib2(){
1065     log check_lib2 "$@"
1066     headers="$1"
1067     funcs="$2"
1068     shift 2
1069     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
1070 }
1071
1072 check_lib_cpp(){
1073     log check_lib_cpp "$@"
1074     headers="$1"
1075     classes="$2"
1076     shift 2
1077     check_class_headers_cpp "$headers" "$classes" "$@" && add_extralibs "$@"
1078 }
1079
1080 check_pkg_config(){
1081     log check_pkg_config "$@"
1082     pkgandversion="$1"
1083     pkg="${1%% *}"
1084     headers="$2"
1085     funcs="$3"
1086     shift 3
1087     check_cmd $pkg_config --exists --print-errors $pkgandversion || return
1088     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1089     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1090     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1091         set_safe ${pkg}_cflags $pkg_cflags   &&
1092         set_safe ${pkg}_libs   $pkg_libs
1093 }
1094
1095 check_exec(){
1096     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1097 }
1098
1099 check_exec_crash(){
1100     code=$(cat)
1101
1102     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1103     # are safe but may not be available everywhere.  Thus we use
1104     # raise(SIGTERM) instead.  The check is run in a subshell so we
1105     # can redirect the "Terminated" message from the shell.  SIGBUS
1106     # is not defined by standard C so it is used conditionally.
1107
1108     (check_exec "$@") >> $logfile 2>&1 <<EOF
1109 #include <signal.h>
1110 static void sighandler(int sig){
1111     raise(SIGTERM);
1112 }
1113 int foo(void){
1114     $code
1115 }
1116 int (*func_ptr)(void) = foo;
1117 int main(void){
1118     signal(SIGILL, sighandler);
1119     signal(SIGFPE, sighandler);
1120     signal(SIGSEGV, sighandler);
1121 #ifdef SIGBUS
1122     signal(SIGBUS, sighandler);
1123 #endif
1124     return func_ptr();
1125 }
1126 EOF
1127 }
1128
1129 check_type(){
1130     log check_type "$@"
1131     headers=$1
1132     type=$2
1133     shift 2
1134     disable_safe "$type"
1135     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1136 }
1137
1138 check_struct(){
1139     log check_struct "$@"
1140     headers=$1
1141     struct=$2
1142     member=$3
1143     shift 3
1144     disable_safe "${struct}_${member}"
1145     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1146         enable_safe "${struct}_${member}"
1147 }
1148
1149 check_builtin(){
1150     log check_builtin "$@"
1151     name=$1
1152     headers=$2
1153     builtin=$3
1154     shift 3
1155     disable "$name"
1156     check_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1157 }
1158
1159 check_compile_assert(){
1160     log check_compile_assert "$@"
1161     name=$1
1162     headers=$2
1163     condition=$3
1164     shift 3
1165     disable "$name"
1166     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1167 }
1168
1169 require(){
1170     name="$1"
1171     header="$2"
1172     func="$3"
1173     shift 3
1174     check_lib $header $func "$@" || die "ERROR: $name not found"
1175 }
1176
1177 require2(){
1178     name="$1"
1179     headers="$2"
1180     func="$3"
1181     shift 3
1182     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
1183 }
1184
1185 require_cpp(){
1186     name="$1"
1187     headers="$2"
1188     classes="$3"
1189     shift 3
1190     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1191 }
1192
1193 require_pkg_config(){
1194     pkg="$1"
1195     check_pkg_config "$@" || die "ERROR: $pkg not found"
1196     add_cflags    $(get_safe ${pkg}_cflags)
1197     add_extralibs $(get_safe ${pkg}_libs)
1198 }
1199
1200 require_libfreetype(){
1201     log require_libfreetype "$@"
1202     pkg="freetype2"
1203     check_cmd $pkg_config --exists --print-errors $pkg \
1204       || die "ERROR: $pkg not found"
1205     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1206     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1207     {
1208         echo "#include <ft2build.h>"
1209         echo "#include FT_FREETYPE_H"
1210         echo "long check_func(void) { return (long) FT_Init_FreeType; }"
1211         echo "int main(void) { return 0; }"
1212     } | check_ld "cc" $pkg_cflags $pkg_libs \
1213       && set_safe ${pkg}_cflags $pkg_cflags \
1214       && set_safe ${pkg}_libs   $pkg_libs \
1215       || die "ERROR: $pkg not found"
1216     add_cflags    $(get_safe ${pkg}_cflags)
1217     add_extralibs $(get_safe ${pkg}_libs)
1218 }
1219
1220 hostcc_e(){
1221     eval printf '%s\\n' $HOSTCC_E
1222 }
1223
1224 hostcc_o(){
1225     eval printf '%s\\n' $HOSTCC_O
1226 }
1227
1228 check_host_cc(){
1229     log check_host_cc "$@"
1230     cat > $TMPC
1231     log_file $TMPC
1232     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1233 }
1234
1235 check_host_cpp(){
1236     log check_host_cpp "$@"
1237     cat > $TMPC
1238     log_file $TMPC
1239     check_cmd $host_cc $HOSTCPPFLAGS $HOSTCFLAGS "$@" $(hostcc_e $TMPO) $TMPC
1240 }
1241
1242 check_host_cppflags(){
1243     log check_host_cppflags "$@"
1244     check_host_cc "$@" <<EOF && append host_cppflags "$@"
1245 int x;
1246 EOF
1247 }
1248
1249 check_host_cflags(){
1250     log check_host_cflags "$@"
1251     set -- $($host_cflags_filter "$@")
1252     check_host_cc "$@" <<EOF && append host_cflags "$@"
1253 int x;
1254 EOF
1255 }
1256
1257 check_host_cpp_condition(){
1258     log check_host_cpp_condition "$@"
1259     header=$1
1260     condition=$2
1261     shift 2
1262     check_host_cpp "$@" <<EOF
1263 #include <$header>
1264 #if !($condition)
1265 #error "unsatisfied condition: $condition"
1266 #endif
1267 EOF
1268 }
1269
1270 apply(){
1271     file=$1
1272     shift
1273     "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
1274 }
1275
1276 cp_if_changed(){
1277     cmp -s "$1" "$2" && echo "$2 is unchanged" && return
1278     mkdir -p "$(dirname $2)"
1279     $cp_f "$1" "$2"
1280 }
1281
1282 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1283 # system-dependent things.
1284
1285 COMPONENT_LIST="
1286     bsfs
1287     decoders
1288     demuxers
1289     encoders
1290     filters
1291     hwaccels
1292     indevs
1293     muxers
1294     outdevs
1295     parsers
1296     protocols
1297 "
1298
1299 EXAMPLE_LIST="
1300     avio_reading_example
1301     decoding_encoding_example
1302     demuxing_decoding_example
1303     filter_audio_example
1304     filtering_audio_example
1305     filtering_video_example
1306     metadata_example
1307     muxing_example
1308     remuxing_example
1309     resampling_audio_example
1310     scaling_video_example
1311     transcode_aac_example
1312     transcoding_example
1313 "
1314
1315 EXTERNAL_LIBRARY_LIST="
1316     avisynth
1317     bzlib
1318     crystalhd
1319     decklink
1320     frei0r
1321     gnutls
1322     iconv
1323     ladspa
1324     libaacplus
1325     libass
1326     libbluray
1327     libbs2b
1328     libcaca
1329     libcdio
1330     libcelt
1331     libdc1394
1332     libfaac
1333     libfdk_aac
1334     libflite
1335     libfontconfig
1336     libfreetype
1337     libfribidi
1338     libgme
1339     libgsm
1340     libiec61883
1341     libilbc
1342     libmodplug
1343     libmp3lame
1344     libnut
1345     libopencore_amrnb
1346     libopencore_amrwb
1347     libopencv
1348     libopenjpeg
1349     libopus
1350     libpulse
1351     libquvi
1352     librtmp
1353     libschroedinger
1354     libshine
1355     libsmbclient
1356     libsoxr
1357     libspeex
1358     libssh
1359     libstagefright_h264
1360     libtheora
1361     libtwolame
1362     libutvideo
1363     libv4l2
1364     libvidstab
1365     libvo_aacenc
1366     libvo_amrwbenc
1367     libvorbis
1368     libvpx
1369     libwavpack
1370     libwebp
1371     libx264
1372     libx265
1373     libxavs
1374     libxvid
1375     libzmq
1376     libzvbi
1377     openal
1378     opencl
1379     opengl
1380     openssl
1381     x11grab
1382     xlib
1383     zlib
1384 "
1385
1386 DOCUMENT_LIST="
1387     doc
1388     htmlpages
1389     manpages
1390     podpages
1391     txtpages
1392 "
1393
1394 FEATURE_LIST="
1395     ftrapv
1396     gray
1397     hardcoded_tables
1398     runtime_cpudetect
1399     safe_bitstream_reader
1400     shared
1401     small
1402     sram
1403     static
1404     swscale_alpha
1405 "
1406
1407 HWACCEL_LIST="
1408     dxva2
1409     vaapi
1410     vda
1411     vdpau
1412     xvmc
1413 "
1414
1415 LIBRARY_LIST="
1416     avcodec
1417     avdevice
1418     avfilter
1419     avformat
1420     avresample
1421     avutil
1422     postproc
1423     swresample
1424     swscale
1425 "
1426
1427 LICENSE_LIST="
1428     gpl
1429     nonfree
1430     version3
1431 "
1432
1433 PROGRAM_LIST="
1434     ffplay
1435     ffprobe
1436     ffserver
1437     ffmpeg
1438 "
1439
1440 SUBSYSTEM_LIST="
1441     dct
1442     dwt
1443     error_resilience
1444     fast_unaligned
1445     fft
1446     lsp
1447     lzo
1448     mdct
1449     network
1450     rdft
1451 "
1452
1453 CONFIG_LIST="
1454     $COMPONENT_LIST
1455     $DOCUMENT_LIST
1456     $EXAMPLE_LIST
1457     $EXTERNAL_LIBRARY_LIST
1458     $FEATURE_LIST
1459     $HWACCEL_LIST
1460     $LICENSE_LIST
1461     $LIBRARY_LIST
1462     $PROGRAM_LIST
1463     $SUBSYSTEM_LIST
1464     fontconfig
1465     incompatible_libav_abi
1466     memalign_hack
1467     memory_poisoning
1468     neon_clobber_test
1469     pic
1470     pod2man
1471     raise_major
1472     thumb
1473     xmm_clobber_test
1474 "
1475
1476 THREADS_LIST="
1477     pthreads
1478     os2threads
1479     w32threads
1480 "
1481
1482 ATOMICS_LIST="
1483     atomics_gcc
1484     atomics_suncc
1485     atomics_win32
1486 "
1487
1488 ARCH_LIST="
1489     aarch64
1490     alpha
1491     arm
1492     avr32
1493     avr32_ap
1494     avr32_uc
1495     bfin
1496     ia64
1497     m68k
1498     mips
1499     mips64
1500     parisc
1501     ppc
1502     ppc64
1503     s390
1504     sh4
1505     sparc
1506     sparc64
1507     tilegx
1508     tilepro
1509     tomi
1510     x86
1511     x86_32
1512     x86_64
1513 "
1514
1515 ARCH_EXT_LIST_ARM="
1516     armv5te
1517     armv6
1518     armv6t2
1519     armv8
1520     neon
1521     vfp
1522     vfpv3
1523 "
1524
1525 ARCH_EXT_LIST_MIPS="
1526     mipsfpu
1527     mips32r2
1528     mipsdspr1
1529     mipsdspr2
1530 "
1531
1532 ARCH_EXT_LIST_X86_SIMD="
1533     amd3dnow
1534     amd3dnowext
1535     avx
1536     avx2
1537     fma3
1538     fma4
1539     mmx
1540     mmxext
1541     sse
1542     sse2
1543     sse3
1544     sse4
1545     sse42
1546     ssse3
1547     xop
1548 "
1549
1550 ARCH_EXT_LIST_PPC="
1551     altivec
1552     dcbzl
1553     ldbrx
1554     ppc4xx
1555     vsx
1556 "
1557
1558 ARCH_EXT_LIST_X86="
1559     $ARCH_EXT_LIST_X86_SIMD
1560     cpunop
1561     i686
1562 "
1563
1564 ARCH_EXT_LIST="
1565     $ARCH_EXT_LIST_ARM
1566     $ARCH_EXT_LIST_PPC
1567     $ARCH_EXT_LIST_X86
1568     $ARCH_EXT_LIST_MIPS
1569     loongson
1570 "
1571
1572 ARCH_FEATURES="
1573     aligned_stack
1574     fast_64bit
1575     fast_clz
1576     fast_cmov
1577     local_aligned_8
1578     local_aligned_16
1579     local_aligned_32
1580 "
1581
1582 BUILTIN_LIST="
1583     atomic_cas_ptr
1584     machine_rw_barrier
1585     MemoryBarrier
1586     mm_empty
1587     rdtsc
1588     sarestart
1589     sync_val_compare_and_swap
1590 "
1591 HAVE_LIST_CMDLINE="
1592     inline_asm
1593     symver
1594     yasm
1595 "
1596
1597 HAVE_LIST_PUB="
1598     bigendian
1599     fast_unaligned
1600     incompatible_libav_abi
1601 "
1602
1603 HEADERS_LIST="
1604     alsa_asoundlib_h
1605     altivec_h
1606     arpa_inet_h
1607     asm_types_h
1608     cdio_paranoia_h
1609     cdio_paranoia_paranoia_h
1610     CL_cl_h
1611     dev_bktr_ioctl_bt848_h
1612     dev_bktr_ioctl_meteor_h
1613     dev_ic_bt8xx_h
1614     dev_video_bktr_ioctl_bt848_h
1615     dev_video_meteor_ioctl_meteor_h
1616     direct_h
1617     dlfcn_h
1618     dxva_h
1619     ES2_gl_h
1620     gsm_h
1621     io_h
1622     mach_mach_time_h
1623     machine_ioctl_bt848_h
1624     machine_ioctl_meteor_h
1625     malloc_h
1626     openjpeg_1_5_openjpeg_h
1627     OpenGL_gl3_h
1628     poll_h
1629     sndio_h
1630     soundcard_h
1631     sys_mman_h
1632     sys_param_h
1633     sys_resource_h
1634     sys_select_h
1635     sys_soundcard_h
1636     sys_time_h
1637     sys_un_h
1638     sys_videoio_h
1639     termios_h
1640     unistd_h
1641     windows_h
1642     winsock2_h
1643 "
1644
1645 MATH_FUNCS="
1646     atanf
1647     atan2f
1648     cbrt
1649     cbrtf
1650     cosf
1651     exp2
1652     exp2f
1653     expf
1654     fminf
1655     isinf
1656     isnan
1657     ldexpf
1658     llrint
1659     llrintf
1660     log2
1661     log2f
1662     log10f
1663     lrint
1664     lrintf
1665     powf
1666     rint
1667     round
1668     roundf
1669     sinf
1670     trunc
1671     truncf
1672 "
1673
1674 SYSTEM_FUNCS="
1675     access
1676     aligned_malloc
1677     clock_gettime
1678     closesocket
1679     CommandLineToArgvW
1680     CoTaskMemFree
1681     CryptGenRandom
1682     dlopen
1683     fcntl
1684     flt_lim
1685     fork
1686     getaddrinfo
1687     gethrtime
1688     getopt
1689     GetProcessAffinityMask
1690     GetProcessMemoryInfo
1691     GetProcessTimes
1692     getrusage
1693     getservbyport
1694     GetSystemTimeAsFileTime
1695     gettimeofday
1696     glob
1697     glXGetProcAddress
1698     inet_aton
1699     isatty
1700     jack_port_get_latency_range
1701     kbhit
1702     localtime_r
1703     lzo1x_999_compress
1704     mach_absolute_time
1705     MapViewOfFile
1706     memalign
1707     mkstemp
1708     mmap
1709     mprotect
1710     nanosleep
1711     PeekNamedPipe
1712     posix_memalign
1713     pthread_cancel
1714     sched_getaffinity
1715     SetConsoleTextAttribute
1716     setmode
1717     setrlimit
1718     Sleep
1719     strerror_r
1720     sysconf
1721     sysctl
1722     usleep
1723     VirtualAlloc
1724     wglGetProcAddress
1725 "
1726
1727 TOOLCHAIN_FEATURES="
1728     as_dn_directive
1729     as_func
1730     asm_mod_q
1731     attribute_may_alias
1732     attribute_packed
1733     ebp_available
1734     ebx_available
1735     gnu_as
1736     gnu_windres
1737     ibm_asm
1738     inline_asm_labels
1739     inline_asm_nonlocal_labels
1740     inline_asm_direct_symbol_refs
1741     pragma_deprecated
1742     rsync_contimeout
1743     symver_asm_label
1744     symver_gnu_asm
1745     vfp_args
1746     xform_asm
1747     xmm_clobbers
1748 "
1749
1750 TYPES_LIST="
1751     socklen_t
1752     struct_addrinfo
1753     struct_group_source_req
1754     struct_ip_mreq_source
1755     struct_ipv6_mreq
1756     struct_pollfd
1757     struct_rusage_ru_maxrss
1758     struct_sctp_event_subscribe
1759     struct_sockaddr_in6
1760     struct_sockaddr_sa_len
1761     struct_sockaddr_storage
1762     struct_stat_st_mtim_tv_nsec
1763     struct_v4l2_frmivalenum_discrete
1764 "
1765
1766 HAVE_LIST="
1767     $ARCH_EXT_LIST
1768     $(add_suffix _external $ARCH_EXT_LIST)
1769     $(add_suffix _inline   $ARCH_EXT_LIST)
1770     $ARCH_FEATURES
1771     $ATOMICS_LIST
1772     $BUILTIN_LIST
1773     $HAVE_LIST_CMDLINE
1774     $HAVE_LIST_PUB
1775     $HEADERS_LIST
1776     $MATH_FUNCS
1777     $SYSTEM_FUNCS
1778     $THREADS_LIST
1779     $TOOLCHAIN_FEATURES
1780     $TYPES_LIST
1781     atomics_native
1782     dos_paths
1783     dxva2api_cobj
1784     dxva2_lib
1785     libc_msvcrt
1786     libdc1394_1
1787     libdc1394_2
1788     makeinfo
1789     perl
1790     pod2man
1791     sdl
1792     texi2html
1793     threads
1794     vdpau_x11
1795     xlib
1796 "
1797
1798 # options emitted with CONFIG_ prefix but not available on the command line
1799 CONFIG_EXTRA="
1800     aandcttables
1801     ac3dsp
1802     audio_frame_queue
1803     audiodsp
1804     blockdsp
1805     bswapdsp
1806     cabac
1807     dvprofile
1808     exif
1809     fdctdsp
1810     frame_thread_encoder
1811     gcrypt
1812     golomb
1813     gplv3
1814     h263dsp
1815     h264chroma
1816     h264dsp
1817     h264pred
1818     h264qpel
1819     hpeldsp
1820     huffman
1821     huffyuvdsp
1822     huffyuvencdsp
1823     idctdsp
1824     iirfilter
1825     intrax8
1826     lgplv3
1827     llauddsp
1828     llviddsp
1829     lpc
1830     me_cmp
1831     mpeg_er
1832     mpegaudio
1833     mpegaudiodsp
1834     mpegvideo
1835     mpegvideoenc
1836     nettle
1837     pixblockdsp
1838     qpeldsp
1839     rangecoder
1840     riffdec
1841     riffenc
1842     rtpdec
1843     rtpenc_chain
1844     sinewin
1845     tpeldsp
1846     videodsp
1847     vp3dsp
1848 "
1849
1850 CMDLINE_SELECT="
1851     $ARCH_EXT_LIST
1852     $CONFIG_LIST
1853     $HAVE_LIST_CMDLINE
1854     $THREADS_LIST
1855     asm
1856     cross_compile
1857     debug
1858     extra_warnings
1859     logging
1860     lto
1861     optimizations
1862     rpath
1863     stripping
1864 "
1865
1866 PATHS_LIST="
1867     bindir
1868     datadir
1869     docdir
1870     incdir
1871     libdir
1872     mandir
1873     prefix
1874     shlibdir
1875 "
1876
1877 CMDLINE_SET="
1878     $PATHS_LIST
1879     ar
1880     arch
1881     as
1882     assert_level
1883     build_suffix
1884     cc
1885     cpu
1886     cross_prefix
1887     cxx
1888     dep_cc
1889     doxygen
1890     extra_version
1891     gas
1892     host_cc
1893     host_cflags
1894     host_ld
1895     host_ldflags
1896     host_libs
1897     host_os
1898     install
1899     ld
1900     logfile
1901     malloc_prefix
1902     nm
1903     optflags
1904     pkg_config
1905     pkg_config_flags
1906     progs_suffix
1907     random_seed
1908     ranlib
1909     samples
1910     strip
1911     sws_max_filter_size
1912     sysinclude
1913     sysroot
1914     target_exec
1915     target_os
1916     target_path
1917     target_samples
1918     tempprefix
1919     toolchain
1920     valgrind
1921     yasmexe
1922 "
1923
1924 CMDLINE_APPEND="
1925     extra_cflags
1926     extra_cxxflags
1927     host_cppflags
1928 "
1929
1930 # code dependency declarations
1931
1932 # architecture extensions
1933
1934 armv5te_deps="arm"
1935 armv6_deps="arm"
1936 armv6t2_deps="arm"
1937 armv8_deps="aarch64"
1938 neon_deps_any="aarch64 arm"
1939 vfp_deps_any="aarch64 arm"
1940 vfpv3_deps="vfp"
1941
1942 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1943
1944 mipsfpu_deps="mips"
1945 mips32r2_deps="mips"
1946 mipsdspr1_deps="mips"
1947 mipsdspr2_deps="mips"
1948
1949 altivec_deps="ppc"
1950 ppc4xx_deps="ppc"
1951 vsx_deps="ppc"
1952
1953 cpunop_deps="i686"
1954 x86_64_select="i686"
1955 x86_64_suggest="fast_cmov"
1956
1957 amd3dnow_deps="mmx"
1958 amd3dnowext_deps="amd3dnow"
1959 i686_deps="x86"
1960 mmx_deps="x86"
1961 mmxext_deps="mmx"
1962 sse_deps="mmxext"
1963 sse2_deps="sse"
1964 sse3_deps="sse2"
1965 ssse3_deps="sse3"
1966 sse4_deps="ssse3"
1967 sse42_deps="sse4"
1968 avx_deps="sse42"
1969 xop_deps="avx"
1970 fma3_deps="avx"
1971 fma4_deps="avx"
1972 avx2_deps="avx"
1973
1974 mmx_external_deps="yasm"
1975 mmx_inline_deps="inline_asm"
1976 mmx_suggest="mmx_external mmx_inline"
1977
1978 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
1979     eval dep=\$${ext}_deps
1980     eval ${ext}_external_deps='"${dep}_external"'
1981     eval ${ext}_inline_deps='"${dep}_inline"'
1982     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1983 done
1984
1985 aligned_stack_if_any="aarch64 ppc x86"
1986 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1987 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
1988 fast_unaligned_if_any="aarch64 ppc x86"
1989
1990 need_memalign="altivec neon sse"
1991
1992 # system capabilities
1993
1994 symver_if_any="symver_asm_label symver_gnu_asm"
1995
1996 # threading support
1997 atomics_gcc_if="sync_val_compare_and_swap"
1998 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
1999 atomics_win32_if="MemoryBarrier"
2000 atomics_native_if_any="$ATOMICS_LIST"
2001 w32threads_deps="atomics_native"
2002 threads_if_any="$THREADS_LIST"
2003
2004 # subsystems
2005 dct_select="rdft"
2006 error_resilience_select="me_cmp"
2007 frame_thread_encoder_deps="encoders threads"
2008 intrax8_select="error_resilience"
2009 mdct_select="fft"
2010 rdft_select="fft"
2011 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2012 mpeg_er_select="error_resilience"
2013 mpegaudio_select="mpegaudiodsp"
2014 mpegaudiodsp_select="dct"
2015 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp videodsp"
2016 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
2017
2018 # decoders / encoders
2019 aac_decoder_select="mdct sinewin"
2020 aac_encoder_select="audio_frame_queue iirfilter mdct sinewin"
2021 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2022 ac3_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2023 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2024 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2025 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2026 aic_decoder_select="golomb idctdsp"
2027 alac_encoder_select="lpc"
2028 als_decoder_select="bswapdsp"
2029 amrnb_decoder_select="lsp"
2030 amrwb_decoder_select="lsp"
2031 amv_decoder_select="sp5x_decoder exif"
2032 amv_encoder_select="aandcttables mpegvideoenc"
2033 ape_decoder_select="bswapdsp llauddsp"
2034 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2035 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2036 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2037 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2038 atrac1_decoder_select="mdct sinewin"
2039 atrac3_decoder_select="mdct"
2040 atrac3p_decoder_select="mdct sinewin"
2041 avrn_decoder_select="exif"
2042 bink_decoder_select="blockdsp hpeldsp"
2043 binkaudio_dct_decoder_select="mdct rdft dct sinewin"
2044 binkaudio_rdft_decoder_select="mdct rdft sinewin"
2045 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2046 cllc_decoder_select="bswapdsp"
2047 comfortnoise_encoder_select="lpc"
2048 cook_decoder_select="audiodsp mdct sinewin"
2049 cscd_decoder_select="lzo"
2050 cscd_decoder_suggest="zlib"
2051 dca_decoder_select="mdct"
2052 dirac_decoder_select="dwt golomb videodsp mpegvideoenc"
2053 dnxhd_decoder_select="blockdsp idctdsp"
2054 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2055 dvvideo_decoder_select="dvprofile idctdsp"
2056 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2057 dxa_decoder_select="zlib"
2058 eac3_decoder_select="ac3_decoder"
2059 eac3_encoder_select="ac3_encoder"
2060 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2061 eatgq_decoder_select="aandcttables"
2062 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpeg1video_decoder"
2063 exr_decoder_select="zlib"
2064 ffv1_decoder_select="golomb rangecoder"
2065 ffv1_encoder_select="rangecoder"
2066 ffvhuff_decoder_select="huffyuv_decoder"
2067 ffvhuff_encoder_select="huffyuv_encoder"
2068 fic_decoder_select="golomb"
2069 flac_decoder_select="golomb"
2070 flac_encoder_select="bswapdsp golomb lpc"
2071 flashsv_decoder_select="zlib"
2072 flashsv_encoder_select="zlib"
2073 flashsv2_encoder_select="zlib"
2074 flashsv2_decoder_select="zlib"
2075 flv_decoder_select="h263_decoder"
2076 flv_encoder_select="h263_encoder"
2077 fourxm_decoder_select="blockdsp bswapdsp"
2078 fraps_decoder_select="bswapdsp huffman"
2079 g2m_decoder_select="blockdsp idctdsp zlib"
2080 g729_decoder_select="audiodsp"
2081 h261_decoder_select="mpeg_er mpegvideo"
2082 h261_encoder_select="aandcttables mpegvideoenc"
2083 h263_decoder_select="error_resilience h263_parser h263dsp mpeg_er mpegvideo qpeldsp"
2084 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2085 h263i_decoder_select="h263_decoder"
2086 h263p_encoder_select="h263_encoder"
2087 h264_decoder_select="cabac golomb h264chroma h264dsp h264pred h264qpel videodsp"
2088 h264_decoder_suggest="error_resilience"
2089 hevc_decoder_select="bswapdsp cabac golomb videodsp"
2090 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2091 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llviddsp"
2092 iac_decoder_select="imc_decoder"
2093 imc_decoder_select="bswapdsp fft mdct sinewin"
2094 indeo3_decoder_select="hpeldsp"
2095 interplay_video_decoder_select="hpeldsp"
2096 jpegls_decoder_select="golomb mjpeg_decoder"
2097 jpegls_encoder_select="golomb"
2098 jv_decoder_select="blockdsp"
2099 lagarith_decoder_select="huffyuvdsp"
2100 ljpeg_encoder_select="aandcttables idctdsp"
2101 loco_decoder_select="golomb"
2102 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2103 metasound_decoder_select="lsp mdct sinewin"
2104 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2105 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp"
2106 mjpeg_encoder_select="aandcttables mpegvideoenc"
2107 mjpegb_decoder_select="mjpeg_decoder"
2108 mlp_decoder_select="mlp_parser"
2109 motionpixels_decoder_select="bswapdsp"
2110 mp1_decoder_select="mpegaudio"
2111 mp1float_decoder_select="mpegaudio"
2112 mp2_decoder_select="mpegaudio"
2113 mp2float_decoder_select="mpegaudio"
2114 mp3_decoder_select="mpegaudio"
2115 mp3adu_decoder_select="mpegaudio"
2116 mp3adufloat_decoder_select="mpegaudio"
2117 mp3float_decoder_select="mpegaudio"
2118 mp3on4_decoder_select="mpegaudio"
2119 mp3on4float_decoder_select="mpegaudio"
2120 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2121 mpc8_decoder_select="mpegaudiodsp"
2122 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
2123 mpeg_xvmc_decoder_select="mpeg2video_decoder"
2124 mpeg1video_decoder_select="error_resilience mpeg_er mpegvideo"
2125 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2126 mpeg2video_decoder_select="error_resilience mpeg_er mpegvideo"
2127 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2128 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2129 mpeg4_encoder_select="h263_encoder"
2130 msmpeg4v1_decoder_select="h263_decoder"
2131 msmpeg4v2_decoder_select="h263_decoder"
2132 msmpeg4v2_encoder_select="h263_encoder"
2133 msmpeg4v3_decoder_select="h263_decoder"
2134 msmpeg4v3_encoder_select="h263_encoder"
2135 mss2_decoder_select="error_resilience mpeg_er qpeldsp vc1_decoder"
2136 mxpeg_decoder_select="mjpeg_decoder"
2137 nellymoser_decoder_select="mdct sinewin"
2138 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2139 nuv_decoder_select="idctdsp lzo"
2140 on2avc_decoder_select="mdct"
2141 opus_decoder_deps="swresample"
2142 png_decoder_select="zlib"
2143 png_encoder_select="huffyuvencdsp zlib"
2144 prores_decoder_select="blockdsp idctdsp"
2145 prores_encoder_select="fdctdsp"
2146 qcelp_decoder_select="lsp"
2147 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2148 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2149 ra_144_decoder_select="audiodsp"
2150 ralf_decoder_select="golomb"
2151 rawvideo_decoder_select="bswapdsp"
2152 rtjpeg_decoder_select="me_cmp"
2153 rv10_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2154 rv10_encoder_select="h263_encoder"
2155 rv20_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2156 rv20_encoder_select="h263_encoder"
2157 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo videodsp"
2158 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo videodsp"
2159 shorten_decoder_select="golomb"
2160 sipr_decoder_select="lsp"
2161 snow_decoder_select="dwt h264qpel hpeldsp rangecoder"
2162 snow_encoder_select="aandcttables dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2163 sonic_decoder_select="golomb rangecoder"
2164 sonic_encoder_select="golomb rangecoder"
2165 sonic_ls_encoder_select="golomb rangecoder"
2166 sp5x_decoder_select="mjpeg_decoder"
2167 svq1_decoder_select="hpeldsp"
2168 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2169 svq3_decoder_select="h264_decoder hpeldsp tpeldsp"
2170 svq3_decoder_suggest="zlib"
2171 tak_decoder_select="audiodsp"
2172 theora_decoder_select="vp3_decoder"
2173 thp_decoder_select="mjpeg_decoder"
2174 tiff_decoder_suggest="zlib"
2175 tiff_encoder_suggest="zlib"
2176 truehd_decoder_select="mlp_parser"
2177 truemotion2_decoder_select="bswapdsp"
2178 truespeech_decoder_select="bswapdsp"
2179 tscc_decoder_select="zlib"
2180 twinvq_decoder_select="mdct lsp sinewin"
2181 utvideo_decoder_select="bswapdsp"
2182 utvideo_encoder_select="bswapdsp huffman huffyuvencdsp"
2183 vble_decoder_select="huffyuvdsp"
2184 vc1_decoder_select="blockdsp error_resilience h263_decoder h264chroma h264qpel intrax8 mpeg_er qpeldsp"
2185 vc1image_decoder_select="vc1_decoder"
2186 vorbis_decoder_select="mdct"
2187 vorbis_encoder_select="mdct"
2188 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2189 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp"
2190 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp"
2191 vp6a_decoder_select="vp6_decoder"
2192 vp6f_decoder_select="vp6_decoder"
2193 vp7_decoder_select="h264pred videodsp"
2194 vp8_decoder_select="h264pred videodsp"
2195 vp9_decoder_select="videodsp vp9_parser"
2196 webp_decoder_select="vp8_decoder"
2197 wmalossless_decoder_select="llauddsp"
2198 wmapro_decoder_select="mdct sinewin"
2199 wmav1_decoder_select="mdct sinewin"
2200 wmav1_encoder_select="mdct sinewin"
2201 wmav2_decoder_select="mdct sinewin"
2202 wmav2_encoder_select="mdct sinewin"
2203 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2204 wmv1_decoder_select="h263_decoder"
2205 wmv1_encoder_select="h263_encoder"
2206 wmv2_decoder_select="blockdsp h263_decoder idctdsp intrax8 videodsp"
2207 wmv2_encoder_select="h263_encoder"
2208 wmv3_decoder_select="vc1_decoder"
2209 wmv3image_decoder_select="wmv3_decoder"
2210 zerocodec_decoder_select="zlib"
2211 zlib_decoder_select="zlib"
2212 zlib_encoder_select="zlib"
2213 zmbv_decoder_select="zlib"
2214 zmbv_encoder_select="zlib"
2215
2216 # hardware accelerators
2217 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2218 dxva2_deps="dxva2api_h"
2219 vaapi_deps="va_va_h"
2220 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
2221 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
2222 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
2223 xvmc_deps="X11_extensions_XvMClib_h"
2224
2225 h263_vaapi_hwaccel_deps="vaapi"
2226 h263_vaapi_hwaccel_select="h263_decoder"
2227 h263_vdpau_hwaccel_deps="vdpau"
2228 h263_vdpau_hwaccel_select="h263_decoder"
2229 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2230 h264_dxva2_hwaccel_deps="dxva2"
2231 h264_dxva2_hwaccel_select="h264_decoder"
2232 h264_vaapi_hwaccel_deps="vaapi"
2233 h264_vaapi_hwaccel_select="h264_decoder"
2234 h264_vda_decoder_deps="vda"
2235 h264_vda_decoder_select="h264_decoder"
2236 h264_vda_hwaccel_deps="vda"
2237 h264_vda_hwaccel_select="h264_decoder"
2238 h264_vda_old_hwaccel_deps="vda"
2239 h264_vda_old_hwaccel_select="h264_decoder"
2240 h264_vdpau_decoder_deps="vdpau"
2241 h264_vdpau_decoder_select="h264_decoder"
2242 h264_vdpau_hwaccel_deps="vdpau"
2243 h264_vdpau_hwaccel_select="h264_decoder"
2244 mpeg_vdpau_decoder_deps="vdpau"
2245 mpeg_vdpau_decoder_select="mpeg2video_decoder"
2246 mpeg_xvmc_hwaccel_deps="xvmc"
2247 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2248 mpeg1_vdpau_decoder_deps="vdpau"
2249 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
2250 mpeg1_vdpau_hwaccel_deps="vdpau"
2251 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2252 mpeg1_xvmc_hwaccel_deps="xvmc"
2253 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2254 mpeg2_crystalhd_decoder_select="crystalhd"
2255 mpeg2_dxva2_hwaccel_deps="dxva2"
2256 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2257 mpeg2_vaapi_hwaccel_deps="vaapi"
2258 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2259 mpeg2_vdpau_hwaccel_deps="vdpau"
2260 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2261 mpeg2_xvmc_hwaccel_deps="xvmc"
2262 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2263 mpeg4_crystalhd_decoder_select="crystalhd"
2264 mpeg4_vaapi_hwaccel_deps="vaapi"
2265 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2266 mpeg4_vdpau_decoder_deps="vdpau"
2267 mpeg4_vdpau_decoder_select="mpeg4_decoder"
2268 mpeg4_vdpau_hwaccel_deps="vdpau"
2269 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2270 msmpeg4_crystalhd_decoder_select="crystalhd"
2271 vc1_crystalhd_decoder_select="crystalhd"
2272 vc1_dxva2_hwaccel_deps="dxva2"
2273 vc1_dxva2_hwaccel_select="vc1_decoder"
2274 vc1_vaapi_hwaccel_deps="vaapi"
2275 vc1_vaapi_hwaccel_select="vc1_decoder"
2276 vc1_vdpau_decoder_deps="vdpau"
2277 vc1_vdpau_decoder_select="vc1_decoder"
2278 vc1_vdpau_hwaccel_deps="vdpau"
2279 vc1_vdpau_hwaccel_select="vc1_decoder"
2280 wmv3_crystalhd_decoder_select="crystalhd"
2281 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2282 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2283 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
2284 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2285
2286 # parsers
2287 h264_parser_select="h264_decoder"
2288 hevc_parser_select="hevc_decoder"
2289 mpegvideo_parser_select="mpegvideo"
2290 mpeg4video_parser_select="error_resilience h263dsp mpeg_er mpegvideo qpeldsp"
2291 vc1_parser_select="mpegvideo vc1_decoder"
2292
2293 # external libraries
2294 libaacplus_encoder_deps="libaacplus"
2295 libcelt_decoder_deps="libcelt"
2296 libfaac_encoder_deps="libfaac"
2297 libfaac_encoder_select="audio_frame_queue"
2298 libfdk_aac_decoder_deps="libfdk_aac"
2299 libfdk_aac_encoder_deps="libfdk_aac"
2300 libfdk_aac_encoder_select="audio_frame_queue"
2301 libgme_demuxer_deps="libgme"
2302 libgsm_decoder_deps="libgsm"
2303 libgsm_encoder_deps="libgsm"
2304 libgsm_ms_decoder_deps="libgsm"
2305 libgsm_ms_encoder_deps="libgsm"
2306 libilbc_decoder_deps="libilbc"
2307 libilbc_encoder_deps="libilbc"
2308 libmodplug_demuxer_deps="libmodplug"
2309 libmp3lame_encoder_deps="libmp3lame"
2310 libmp3lame_encoder_select="audio_frame_queue"
2311 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2312 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2313 libopencore_amrnb_encoder_select="audio_frame_queue"
2314 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2315 libopenjpeg_decoder_deps="libopenjpeg"
2316 libopenjpeg_encoder_deps="libopenjpeg"
2317 libopus_decoder_deps="libopus"
2318 libopus_encoder_deps="libopus"
2319 libopus_encoder_select="audio_frame_queue"
2320 libquvi_demuxer_deps="libquvi"
2321 libschroedinger_decoder_deps="libschroedinger"
2322 libschroedinger_encoder_deps="libschroedinger"
2323 libshine_encoder_deps="libshine"
2324 libshine_encoder_select="audio_frame_queue"
2325 libspeex_decoder_deps="libspeex"
2326 libspeex_encoder_deps="libspeex"
2327 libspeex_encoder_select="audio_frame_queue"
2328 libstagefright_h264_decoder_deps="libstagefright_h264"
2329 libtheora_encoder_deps="libtheora"
2330 libtwolame_encoder_deps="libtwolame"
2331 libvo_aacenc_encoder_deps="libvo_aacenc"
2332 libvo_aacenc_encoder_select="audio_frame_queue"
2333 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2334 libvorbis_decoder_deps="libvorbis"
2335 libvorbis_encoder_deps="libvorbis"
2336 libvorbis_encoder_select="audio_frame_queue"
2337 libvpx_vp8_decoder_deps="libvpx"
2338 libvpx_vp8_encoder_deps="libvpx"
2339 libvpx_vp9_decoder_deps="libvpx"
2340 libvpx_vp9_encoder_deps="libvpx"
2341 libwavpack_encoder_deps="libwavpack"
2342 libwebp_encoder_deps="libwebp"
2343 libx264_encoder_deps="libx264"
2344 libx264rgb_encoder_deps="libx264"
2345 libx265_encoder_deps="libx265"
2346 libxavs_encoder_deps="libxavs"
2347 libxvid_encoder_deps="libxvid"
2348 libutvideo_decoder_deps="libutvideo"
2349 libutvideo_encoder_deps="libutvideo"
2350 libzvbi_teletext_decoder_deps="libzvbi"
2351
2352 # demuxers / muxers
2353 ac3_demuxer_select="ac3_parser"
2354 asf_demuxer_select="riffdec"
2355 asf_muxer_select="riffenc"
2356 asf_stream_muxer_select="asf_muxer"
2357 avi_demuxer_select="riffdec exif"
2358 avi_muxer_select="riffenc"
2359 avisynth_demuxer_deps="avisynth"
2360 avisynth_demuxer_select="riffdec"
2361 caf_demuxer_select="riffdec"
2362 dirac_demuxer_select="dirac_parser"
2363 dts_demuxer_select="dca_parser"
2364 dtshd_demuxer_select="dca_parser"
2365 dv_demuxer_select="dvprofile"
2366 dv_muxer_select="dvprofile"
2367 dxa_demuxer_select="riffdec"
2368 eac3_demuxer_select="ac3_parser"
2369 f4v_muxer_select="mov_muxer"
2370 flac_demuxer_select="flac_parser"
2371 hds_muxer_select="flv_muxer"
2372 hls_muxer_select="mpegts_muxer"
2373 image2_alias_pix_demuxer_select="image2_demuxer"
2374 image2_brender_pix_demuxer_select="image2_demuxer"
2375 ipod_muxer_select="mov_muxer"
2376 ismv_muxer_select="mov_muxer"
2377 libnut_demuxer_deps="libnut"
2378 libnut_muxer_deps="libnut"
2379 matroska_audio_muxer_select="matroska_muxer"
2380 matroska_demuxer_select="riffdec"
2381 matroska_demuxer_suggest="bzlib lzo zlib"
2382 matroska_muxer_select="riffenc"
2383 mmf_muxer_select="riffenc"
2384 mov_demuxer_select="riffdec"
2385 mov_demuxer_suggest="zlib"
2386 mov_muxer_select="riffenc rtpenc_chain"
2387 mp3_demuxer_select="mpegaudio_parser"
2388 mp4_muxer_select="mov_muxer"
2389 mpegts_muxer_select="adts_muxer latm_muxer"
2390 mpegtsraw_demuxer_select="mpegts_demuxer"
2391 mxf_d10_muxer_select="mxf_muxer"
2392 nut_muxer_select="riffenc"
2393 nuv_demuxer_select="riffdec"
2394 ogg_demuxer_select="golomb"
2395 psp_muxer_select="mov_muxer"
2396 rtp_demuxer_select="sdp_demuxer"
2397 rtpdec_select="asf_demuxer rm_demuxer rtp_protocol mpegts_demuxer mov_demuxer"
2398 rtsp_demuxer_select="http_protocol rtpdec"
2399 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2400 sap_demuxer_select="sdp_demuxer"
2401 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2402 sdp_demuxer_select="rtpdec"
2403 smoothstreaming_muxer_select="ismv_muxer"
2404 spdif_muxer_select="aac_parser"
2405 tak_demuxer_select="tak_parser"
2406 tg2_muxer_select="mov_muxer"
2407 tgp_muxer_select="mov_muxer"
2408 vobsub_demuxer_select="mpegps_demuxer"
2409 w64_demuxer_select="wav_demuxer"
2410 w64_muxer_select="wav_muxer"
2411 wav_demuxer_select="riffdec"
2412 wav_muxer_select="riffenc"
2413 webm_muxer_select="riffenc"
2414 wtv_demuxer_select="riffdec"
2415 wtv_muxer_select="riffenc"
2416 xmv_demuxer_select="riffdec"
2417 xwma_demuxer_select="riffdec"
2418
2419 # indevs / outdevs
2420 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2421 alsa_outdev_deps="alsa_asoundlib_h"
2422 avfoundation_indev_extralibs="-framework CoreVideo -framework Foundation -framework AVFoundation -framework CoreMedia"
2423 avfoundation_indev_select="avfoundation"
2424 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2425 caca_outdev_deps="libcaca"
2426 decklink_outdev_deps="decklink pthreads"
2427 decklink_outdev_extralibs="-lstdc++"
2428 dshow_indev_deps="IBaseFilter"
2429 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid"
2430 dv1394_indev_deps="dv1394"
2431 dv1394_indev_select="dv_demuxer"
2432 fbdev_indev_deps="linux_fb_h"
2433 fbdev_outdev_deps="linux_fb_h"
2434 gdigrab_indev_deps="CreateDIBSection"
2435 gdigrab_indev_extralibs="-lgdi32"
2436 gdigrab_indev_select="bmp_decoder"
2437 iec61883_indev_deps="libiec61883"
2438 jack_indev_deps="jack_jack_h sem_timedwait"
2439 lavfi_indev_deps="avfilter"
2440 libcdio_indev_deps="libcdio"
2441 libdc1394_indev_deps="libdc1394"
2442 libv4l2_indev_deps="libv4l2"
2443 openal_indev_deps="openal"
2444 opengl_outdev_deps="opengl"
2445 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2446 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2447 pulse_indev_deps="libpulse"
2448 pulse_outdev_deps="libpulse"
2449 qtkit_indev_extralibs="-framework QTKit -framework Foundation -framework QuartzCore"
2450 qtkit_indev_select="qtkit"
2451 sdl_outdev_deps="sdl"
2452 sndio_indev_deps="sndio_h"
2453 sndio_outdev_deps="sndio_h"
2454 v4l_indev_deps="linux_videodev_h"
2455 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2456 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
2457 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2458 vfwcap_indev_extralibs="-lavicap32"
2459 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
2460 xv_outdev_extralibs="-lXv -lX11 -lXext"
2461 x11grab_indev_deps="x11grab"
2462
2463 # protocols
2464 bluray_protocol_deps="libbluray"
2465 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2466 ffrtmpcrypt_protocol_deps_any="gcrypt nettle openssl"
2467 ffrtmpcrypt_protocol_select="tcp_protocol"
2468 ffrtmphttp_protocol_deps="!librtmp_protocol"
2469 ffrtmphttp_protocol_select="http_protocol"
2470 ftp_protocol_select="tcp_protocol"
2471 gopher_protocol_select="network"
2472 http_protocol_select="tcp_protocol"
2473 httpproxy_protocol_select="tcp_protocol"
2474 https_protocol_select="tls_protocol"
2475 librtmp_protocol_deps="librtmp"
2476 librtmpe_protocol_deps="librtmp"
2477 librtmps_protocol_deps="librtmp"
2478 librtmpt_protocol_deps="librtmp"
2479 librtmpte_protocol_deps="librtmp"
2480 libsmbclient_protocol_deps="libsmbclient gplv3"
2481 libssh_protocol_deps="libssh"
2482 mmsh_protocol_select="http_protocol"
2483 mmst_protocol_select="network"
2484 rtmp_protocol_deps="!librtmp_protocol"
2485 rtmp_protocol_select="tcp_protocol"
2486 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2487 rtmps_protocol_deps="!librtmp_protocol"
2488 rtmps_protocol_select="tls_protocol"
2489 rtmpt_protocol_select="ffrtmphttp_protocol"
2490 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2491 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2492 rtp_protocol_select="udp_protocol"
2493 sctp_protocol_deps="struct_sctp_event_subscribe"
2494 sctp_protocol_select="network"
2495 srtp_protocol_select="rtp_protocol"
2496 tcp_protocol_select="network"
2497 tls_protocol_deps_any="openssl gnutls"
2498 tls_protocol_select="tcp_protocol"
2499 udp_protocol_select="network"
2500 unix_protocol_deps="sys_un_h"
2501 unix_protocol_select="network"
2502
2503 # filters
2504 aconvert_filter_deps="swresample"
2505 amovie_filter_deps="avcodec avformat"
2506 aresample_filter_deps="swresample"
2507 ass_filter_deps="libass"
2508 asyncts_filter_deps="avresample"
2509 atempo_filter_deps="avcodec"
2510 atempo_filter_select="rdft"
2511 azmq_filter_deps="libzmq"
2512 blackframe_filter_deps="gpl"
2513 boxblur_filter_deps="gpl"
2514 bs2b_filter_deps="libbs2b"
2515 colormatrix_filter_deps="gpl"
2516 cropdetect_filter_deps="gpl"
2517 dctdnoiz_filter_deps="avcodec"
2518 dctdnoiz_filter_select="dct"
2519 delogo_filter_deps="gpl"
2520 deshake_filter_deps="avcodec"
2521 deshake_filter_select="me_cmp"
2522 drawtext_filter_deps="libfreetype"
2523 ebur128_filter_deps="gpl"
2524 flite_filter_deps="libflite"
2525 frei0r_filter_deps="frei0r dlopen"
2526 frei0r_filter_extralibs='$ldl'
2527 frei0r_src_filter_deps="frei0r dlopen"
2528 frei0r_src_filter_extralibs='$ldl'
2529 geq_filter_deps="gpl"
2530 histeq_filter_deps="gpl"
2531 hqdn3d_filter_deps="gpl"
2532 interlace_filter_deps="gpl"
2533 kerndeint_filter_deps="gpl"
2534 ladspa_filter_deps="ladspa dlopen"
2535 ladspa_filter_extralibs='$ldl'
2536 mcdeint_filter_deps="avcodec gpl"
2537 movie_filter_deps="avcodec avformat"
2538 mp_filter_deps="gpl avcodec swscale inline_asm"
2539 mpdecimate_filter_deps="gpl avcodec"
2540 mpdecimate_filter_select="me_cmp pixblockdsp"
2541 mptestsrc_filter_deps="gpl"
2542 negate_filter_deps="lut_filter"
2543 perspective_filter_deps="gpl"
2544 ocv_filter_deps="libopencv"
2545 owdenoise_filter_deps="gpl"
2546 pan_filter_deps="swresample"
2547 phase_filter_deps="gpl"
2548 pp_filter_deps="gpl postproc"
2549 pullup_filter_deps="gpl"
2550 removelogo_filter_deps="avcodec avformat swscale"
2551 resample_filter_deps="avresample"
2552 sab_filter_deps="gpl swscale"
2553 scale_filter_deps="swscale"
2554 smartblur_filter_deps="gpl swscale"
2555 showspectrum_filter_deps="avcodec"
2556 showspectrum_filter_select="rdft"
2557 spp_filter_deps="gpl avcodec"
2558 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
2559 stereo3d_filter_deps="gpl"
2560 subtitles_filter_deps="avformat avcodec libass"
2561 super2xsai_filter_deps="gpl"
2562 tinterlace_filter_deps="gpl"
2563 vidstabdetect_filter_deps="libvidstab"
2564 vidstabtransform_filter_deps="libvidstab"
2565 pixfmts_super2xsai_test_deps="super2xsai_filter"
2566 tinterlace_merge_test_deps="tinterlace_filter"
2567 tinterlace_pad_test_deps="tinterlace_filter"
2568 zmq_filter_deps="libzmq"
2569 zoompan_filter_deps="swscale"
2570
2571 # examples
2572 avio_reading="avformat avcodec avutil"
2573 avcodec_example_deps="avcodec avutil"
2574 demuxing_decoding_example_deps="avcodec avformat avutil"
2575 filter_audio_example_deps="avfilter avutil"
2576 filtering_audio_example_deps="avfilter avcodec avformat avutil"
2577 filtering_video_example_deps="avfilter avcodec avformat avutil"
2578 metadata_example_deps="avformat avutil"
2579 muxing_example_deps="avcodec avformat avutil swscale"
2580 remuxing_example_deps="avcodec avformat avutil"
2581 resampling_audio_example_deps="avutil swresample"
2582 scaling_video_example_deps="avutil swscale"
2583 transcode_aac_example_deps="avcodec avformat swresample"
2584 transcoding_example_deps="avfilter avcodec avformat avutil"
2585
2586 # libraries, in linking order
2587 avcodec_deps="avutil"
2588 avdevice_deps="avformat avcodec avutil"
2589 avfilter_deps="avutil"
2590 avformat_deps="avcodec avutil"
2591 avresample_deps="avutil"
2592 postproc_deps="avutil gpl"
2593 swresample_deps="avutil"
2594 swscale_deps="avutil"
2595
2596 # programs
2597 ffmpeg_deps="avcodec avfilter avformat swresample"
2598 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
2599                null_filter
2600                setpts_filter trim_filter"
2601 ffplay_deps="avcodec avformat swscale swresample sdl"
2602 ffplay_libs='$sdl_libs'
2603 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
2604 ffprobe_deps="avcodec avformat"
2605 ffserver_deps="avformat fork sarestart"
2606 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
2607
2608 # documentation
2609 podpages_deps="perl"
2610 manpages_deps="perl pod2man"
2611 htmlpages_deps="perl texi2html"
2612 txtpages_deps="perl makeinfo"
2613 doc_deps_any="manpages htmlpages podpages txtpages"
2614
2615 # default parameters
2616
2617 logfile="config.log"
2618
2619 # installation paths
2620 prefix_default="/usr/local"
2621 bindir_default='${prefix}/bin'
2622 datadir_default='${prefix}/share/ffmpeg'
2623 docdir_default='${prefix}/share/doc/ffmpeg'
2624 incdir_default='${prefix}/include'
2625 libdir_default='${prefix}/lib'
2626 mandir_default='${prefix}/share/man'
2627 shlibdir_default="$libdir_default"
2628
2629 # toolchain
2630 ar_default="ar"
2631 cc_default="gcc"
2632 cxx_default="g++"
2633 host_cc_default="gcc"
2634 cp_f="cp -f"
2635 doxygen_default="doxygen"
2636 install="install"
2637 ln_s="ln -s -f"
2638 nm_default="nm -g"
2639 objformat="elf"
2640 pkg_config_default=pkg-config
2641 ranlib_default="ranlib"
2642 strip_default="strip"
2643 yasmexe_default="yasm"
2644 windres_default="windres"
2645
2646 nogas=":"
2647
2648 # OS
2649 target_os_default=$(tolower $(uname -s))
2650 host_os=$target_os_default
2651
2652 # machine
2653 if test "$target_os_default" = aix; then
2654     arch_default=$(uname -p)
2655     strip_default="strip -X32_64"
2656 else
2657     arch_default=$(uname -m)
2658 fi
2659 cpu="generic"
2660
2661 # configurable options
2662 enable $PROGRAM_LIST
2663 enable $DOCUMENT_LIST
2664 enable $EXAMPLE_LIST
2665 enable $(filter_out avresample $LIBRARY_LIST)
2666 enable stripping
2667
2668 enable asm
2669 enable debug
2670 enable doc
2671 enable optimizations
2672 enable runtime_cpudetect
2673 enable safe_bitstream_reader
2674 enable static
2675 enable swscale_alpha
2676
2677 sws_max_filter_size_default=256
2678 set_default sws_max_filter_size
2679
2680 # Enable hwaccels by default.
2681 enable dxva2 vaapi vda vdpau xvmc
2682 enable xlib
2683
2684 # build settings
2685 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2686 LIBPREF="lib"
2687 LIBSUF=".a"
2688 FULLNAME='$(NAME)$(BUILDSUF)'
2689 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
2690 SLIBPREF="lib"
2691 SLIBSUF=".so"
2692 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
2693 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2694 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2695 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2696 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2697 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2698
2699 asflags_filter=echo
2700 cflags_filter=echo
2701 ldflags_filter=echo
2702
2703 AS_C='-c'
2704 AS_O='-o $@'
2705 CC_C='-c'
2706 CC_E='-E -o $@'
2707 CC_O='-o $@'
2708 CXX_C='-c'
2709 CXX_O='-o $@'
2710 LD_O='-o $@'
2711 LD_LIB='-l%'
2712 LD_PATH='-L'
2713 HOSTCC_C='-c'
2714 HOSTCC_E='-E -o $@'
2715 HOSTCC_O='-o $@'
2716 HOSTLD_O='-o $@'
2717
2718 host_libs='-lm'
2719 host_cflags_filter=echo
2720 host_ldflags_filter=echo
2721
2722 target_path='$(CURDIR)'
2723
2724 # since the object filename is not given with the -MM flag, the compiler
2725 # is only able to print the basename, and we must add the path ourselves
2726 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2727 DEPFLAGS='-MM'
2728
2729 # find source path
2730 if test -f configure; then
2731     source_path=.
2732 else
2733     source_path=$(cd $(dirname "$0"); pwd)
2734     echo "$source_path" | grep -q '[[:blank:]]' &&
2735         die "Out of tree builds are impossible with whitespace in source path."
2736     test -e "$source_path/config.h" &&
2737         die "Out of tree builds are impossible with config.h in source dir."
2738 fi
2739
2740 for v in "$@"; do
2741     r=${v#*=}
2742     l=${v%"$r"}
2743     r=$(sh_quote "$r")
2744     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
2745 done
2746
2747 find_things(){
2748     thing=$1
2749     pattern=$2
2750     file=$source_path/$3
2751     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2752 }
2753
2754 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2755 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2756 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2757 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2758 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
2759 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2760 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2761 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2762 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2763 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
2764 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2765
2766 ALL_COMPONENTS="
2767     $BSF_LIST
2768     $DECODER_LIST
2769     $DEMUXER_LIST
2770     $ENCODER_LIST
2771     $FILTER_LIST
2772     $HWACCEL_LIST
2773     $INDEV_LIST
2774     $MUXER_LIST
2775     $OUTDEV_LIST
2776     $PARSER_LIST
2777     $PROTOCOL_LIST
2778 "
2779
2780 for n in $COMPONENT_LIST; do
2781     v=$(toupper ${n%s})_LIST
2782     eval enable \$$v
2783     eval ${n}_if_any="\$$v"
2784 done
2785
2786 enable $ARCH_EXT_LIST
2787
2788 die_unknown(){
2789     echo "Unknown option \"$1\"."
2790     echo "See $0 --help for available options."
2791     exit 1
2792 }
2793
2794 print_3_columns() {
2795     cat | tr ' ' '\n' | sort | pr -r -3 -t
2796 }
2797
2798 show_list() {
2799     suffix=_$1
2800     shift
2801     echo $* | sed s/$suffix//g | print_3_columns
2802     exit 0
2803 }
2804
2805 rand_list(){
2806     IFS=', '
2807     set -- $*
2808     unset IFS
2809     for thing; do
2810         comp=${thing%:*}
2811         prob=${thing#$comp}
2812         prob=${prob#:}
2813         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2814         echo "prob ${prob:-0.5}"
2815         printf '%s\n' $comp
2816     done
2817 }
2818
2819 do_random(){
2820     action=$1
2821     shift
2822     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2823     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2824 }
2825
2826 for opt do
2827     optval="${opt#*=}"
2828     case "$opt" in
2829         --extra-ldflags=*)
2830             add_ldflags $optval
2831         ;;
2832         --extra-libs=*)
2833             add_extralibs $optval
2834         ;;
2835         --disable-devices)
2836             disable $INDEV_LIST $OUTDEV_LIST
2837         ;;
2838         --enable-debug=*)
2839             debuglevel="$optval"
2840         ;;
2841         --disable-programs)
2842             disable $PROGRAM_LIST
2843         ;;
2844         --disable-everything)
2845             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2846         ;;
2847         --disable-all)
2848             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2849             disable $LIBRARY_LIST $PROGRAM_LIST doc
2850         ;;
2851         --enable-random|--disable-random)
2852             action=${opt%%-random}
2853             do_random ${action#--} $COMPONENT_LIST
2854         ;;
2855         --enable-random=*|--disable-random=*)
2856             action=${opt%%-random=*}
2857             do_random ${action#--} $optval
2858         ;;
2859         --enable-*=*|--disable-*=*)
2860             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2861             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2862             eval list=\$$(toupper $thing)_LIST
2863             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2864             list=$(filter "$name" $list)
2865             [ "$list" = "" ] && warn "Option $opt did not match anything"
2866             $action $list
2867         ;;
2868         --enable-?*|--disable-?*)
2869             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2870             if is_in $option $COMPONENT_LIST; then
2871                 test $action = disable && action=unset
2872                 eval $action \$$(toupper ${option%s})_LIST
2873             elif is_in $option $CMDLINE_SELECT; then
2874                 $action $option
2875             else
2876                 die_unknown $opt
2877             fi
2878         ;;
2879         --list-*)
2880             NAME="${opt#--list-}"
2881             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2882             NAME=${NAME%s}
2883             eval show_list $NAME \$$(toupper $NAME)_LIST
2884         ;;
2885         --help|-h) show_help
2886         ;;
2887         --fatal-warnings) enable fatal_warnings
2888         ;;
2889         *)
2890             optname="${opt%%=*}"
2891             optname="${optname#--}"
2892             optname=$(echo "$optname" | sed 's/-/_/g')
2893             if is_in $optname $CMDLINE_SET; then
2894                 eval $optname='$optval'
2895             elif is_in $optname $CMDLINE_APPEND; then
2896                 append $optname "$optval"
2897             else
2898                 die_unknown $opt
2899             fi
2900         ;;
2901     esac
2902 done
2903
2904 disabled logging && logfile=/dev/null
2905
2906 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
2907 set >> $logfile
2908
2909 test -n "$cross_prefix" && enable cross_compile
2910
2911 if enabled cross_compile; then
2912     test -n "$arch" && test -n "$target_os" ||
2913         die "Must specify target arch and OS when cross-compiling"
2914 fi
2915
2916 ar_default="${cross_prefix}${ar_default}"
2917 cc_default="${cross_prefix}${cc_default}"
2918 cxx_default="${cross_prefix}${cxx_default}"
2919 nm_default="${cross_prefix}${nm_default}"
2920 pkg_config_default="${cross_prefix}${pkg_config_default}"
2921 ranlib_default="${cross_prefix}${ranlib_default}"
2922 strip_default="${cross_prefix}${strip_default}"
2923 windres_default="${cross_prefix}${windres_default}"
2924
2925 sysinclude_default="${sysroot}/usr/include"
2926
2927 test -n "$valgrind" && toolchain="valgrind-memcheck"
2928
2929 case "$toolchain" in
2930     clang-asan)
2931         cc_default="clang"
2932         add_cflags  -fsanitize=address
2933         add_ldflags -fsanitize=address
2934     ;;
2935     clang-tsan)
2936         cc_default="clang"
2937         add_cflags  -fsanitize=thread -pie
2938         add_ldflags -fsanitize=thread -pie
2939     ;;
2940     clang-usan)
2941         cc_default="clang"
2942         add_cflags  -fsanitize=undefined
2943         add_ldflags -fsanitize=undefined
2944     ;;
2945     gcc-asan)
2946         cc_default="gcc"
2947         add_cflags  -fsanitize=address
2948         add_ldflags -fsanitize=address
2949     ;;
2950     gcc-tsan)
2951         cc_default="gcc"
2952         add_cflags  -fsanitize=thread -pie -fPIC
2953         add_ldflags -fsanitize=thread -pie -fPIC
2954     ;;
2955     gcc-usan)
2956         cc_default="gcc"
2957         add_cflags  -fsanitize=undefined
2958         add_ldflags -fsanitize=undefined
2959     ;;
2960     valgrind-massif)
2961         target_exec_default=${valgrind:-"valgrind"}
2962         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"
2963     ;;
2964     valgrind-memcheck)
2965         target_exec_default=${valgrind:-"valgrind"}
2966         target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
2967     ;;
2968     msvc)
2969         # Check whether the current MSVC version needs the C99 converter.
2970         # From MSVC 2013 (compiler major version 18) onwards, it does actually
2971         # support enough of C99 to build ffmpeg. Default to the new
2972         # behaviour if the regexp was unable to match anything, since this
2973         # successfully parses the version number of existing supported
2974         # versions that require the converter (MSVC 2010 and 2012).
2975         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
2976         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
2977             cc_default="cl"
2978         else
2979             cc_default="c99wrap cl"
2980         fi
2981         ld_default="link"
2982         nm_default="dumpbin -symbols"
2983         ar_default="lib"
2984         target_os_default="win32"
2985         # Use a relative path for TMPDIR. This makes sure all the
2986         # ffconf temp files are written with a relative path, avoiding
2987         # issues with msys/win32 path conversion for MSVC parameters
2988         # such as -Fo<file> or -out:<file>.
2989         TMPDIR=.
2990     ;;
2991     icl)
2992         cc_default="icl"
2993         ld_default="xilink"
2994         nm_default="dumpbin -symbols"
2995         ar_default="xilib"
2996         target_os_default="win32"
2997         TMPDIR=.
2998     ;;
2999     gcov)
3000         add_cflags  -fprofile-arcs -ftest-coverage
3001         add_ldflags -fprofile-arcs -ftest-coverage
3002     ;;
3003     hardened)
3004         add_cflags  -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -fno-strict-overflow -fstack-protector-all
3005         add_ldflags -Wl,-z,relro -Wl,-z,now
3006     ;;
3007     ?*)
3008         die "Unknown toolchain $toolchain"
3009     ;;
3010 esac
3011
3012 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3013     target_exec target_os yasmexe
3014 enabled cross_compile || host_cc_default=$cc
3015 set_default host_cc
3016
3017 if ! $pkg_config --version >/dev/null 2>&1; then
3018     warn "$pkg_config not found, library detection may fail."
3019     pkg_config=false
3020 fi
3021
3022 if test $doxygen != $doxygen_default && \
3023   ! $doxygen --version >/dev/null 2>&1; then
3024     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3025 fi
3026
3027 exesuf() {
3028     case $1 in
3029         mingw32*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3030     esac
3031 }
3032
3033 EXESUF=$(exesuf $target_os)
3034 HOSTEXESUF=$(exesuf $host_os)
3035
3036 # set temporary file name
3037 : ${TMPDIR:=$TEMPDIR}
3038 : ${TMPDIR:=$TMP}
3039 : ${TMPDIR:=/tmp}
3040
3041 if [ -n "$tempprefix" ] ; then
3042     mktemp(){
3043         echo $tempprefix.${HOSTNAME}.${UID}
3044     }
3045 elif ! check_cmd mktemp -u XXXXXX; then
3046     # simple replacement for missing mktemp
3047     # NOT SAFE FOR GENERAL USE
3048     mktemp(){
3049         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3050     }
3051 fi
3052
3053 tmpfile(){
3054     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
3055         (set -C; exec > $tmp) 2>/dev/null ||
3056         die "Unable to create temporary file in $TMPDIR."
3057     append TMPFILES $tmp
3058     eval $1=$tmp
3059 }
3060
3061 trap 'rm -f -- $TMPFILES' EXIT
3062
3063 tmpfile TMPASM .asm
3064 tmpfile TMPC   .c
3065 tmpfile TMPCPP .cpp
3066 tmpfile TMPE   $EXESUF
3067 tmpfile TMPH   .h
3068 tmpfile TMPM   .m
3069 tmpfile TMPO   .o
3070 tmpfile TMPS   .S
3071 tmpfile TMPSH  .sh
3072 tmpfile TMPV   .ver
3073
3074 unset -f mktemp
3075
3076 chmod +x $TMPE
3077
3078 # make sure we can execute files in $TMPDIR
3079 cat > $TMPSH 2>> $logfile <<EOF
3080 #! /bin/sh
3081 EOF
3082 chmod +x $TMPSH >> $logfile 2>&1
3083 if ! $TMPSH >> $logfile 2>&1; then
3084     cat <<EOF
3085 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3086 variable to another directory and make sure that it is not mounted noexec.
3087 EOF
3088     die "Sanity test failed."
3089 fi
3090
3091 ccc_flags(){
3092     for flag; do
3093         case $flag in
3094             -std=c99)           echo -c99                       ;;
3095             -mcpu=*)            echo -arch ${flag#*=}           ;;
3096             -mieee)             echo -ieee                      ;;
3097             -O*|-fast)          echo $flag                      ;;
3098             -fno-math-errno)    echo -assume nomath_errno       ;;
3099             -g)                 echo -g3                        ;;
3100             -Wall)              echo -msg_enable level2         ;;
3101             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
3102             -Wl,*)              echo $flag                      ;;
3103             -f*|-W*)                                            ;;
3104             *)                  echo $flag                      ;;
3105         esac
3106    done
3107 }
3108
3109 cparser_flags(){
3110     for flag; do
3111         case $flag in
3112             -Wno-switch)             echo -Wno-switch-enum ;;
3113             -Wno-format-zero-length) ;;
3114             -Wdisabled-optimization) ;;
3115             -Wno-pointer-sign)       echo -Wno-other ;;
3116             *)                       echo $flag ;;
3117         esac
3118     done
3119 }
3120
3121 msvc_common_flags(){
3122     for flag; do
3123         case $flag in
3124             # In addition to specifying certain flags under the compiler
3125             # specific filters, they must be specified here as well or else the
3126             # generic catch all at the bottom will print the original flag.
3127             -Wall)                ;;
3128             -std=c99)             ;;
3129             # Common flags
3130             -fomit-frame-pointer) ;;
3131             -g)                   echo -Z7 ;;
3132             -fno-math-errno)      ;;
3133             -fno-common)          ;;
3134             -fno-signed-zeros)    ;;
3135             -fPIC)                ;;
3136             -mthumb)              ;;
3137             -march=*)             ;;
3138             -lz)                  echo zlib.lib ;;
3139             -lavifil32)           echo vfw32.lib ;;
3140             -lavicap32)           echo vfw32.lib user32.lib ;;
3141             -l*)                  echo ${flag#-l}.lib ;;
3142             *)                    echo $flag ;;
3143         esac
3144     done
3145 }
3146
3147 msvc_flags(){
3148     msvc_common_flags "$@"
3149     for flag; do
3150         case $flag in
3151             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3152                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3153                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3154                                        -wd4554 \
3155                                        -wd4273 ;;
3156         esac
3157     done
3158 }
3159
3160 icl_flags(){
3161     msvc_common_flags "$@"
3162     for flag; do
3163         case $flag in
3164             # Despite what Intel's documentation says -Wall, which is supported
3165             # on Windows, does enable remarks so disable them here.
3166             -Wall)                echo $flag -Qdiag-disable:remark ;;
3167             -std=c99)             echo -Qstd=c99 ;;
3168             -flto)                echo -ipo ;;
3169         esac
3170     done
3171 }
3172
3173 icc_flags(){
3174     for flag; do
3175         case $flag in
3176             -flto)                echo -ipo ;;
3177             *)                    echo $flag ;;
3178         esac
3179     done
3180 }
3181
3182 pgi_flags(){
3183     for flag; do
3184         case $flag in
3185             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3186             -fomit-frame-pointer) echo -Mnoframe ;;
3187             -g)                   echo -gopt ;;
3188             *)                    echo $flag ;;
3189         esac
3190     done
3191 }
3192
3193 suncc_flags(){
3194     for flag; do
3195         case $flag in
3196             -march=*|-mcpu=*)
3197                 case "${flag#*=}" in
3198                     native)                   echo -xtarget=native       ;;
3199                     v9|niagara)               echo -xarch=sparc          ;;
3200                     ultrasparc)               echo -xarch=sparcvis       ;;
3201                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3202                     i586|pentium)             echo -xchip=pentium        ;;
3203                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3204                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3205                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3206                     pentium4*)          echo -xtarget=pentium4           ;;
3207                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3208                     *-sse3)             echo -xarch=sse3                 ;;
3209                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3210                     bonnell)                   echo -xarch=ssse3         ;;
3211                     corei7|nehalem)            echo -xtarget=nehalem     ;;
3212                     westmere)                  echo -xtarget=westmere    ;;
3213                     silvermont)                echo -xarch=sse4_2        ;;
3214                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
3215                     core-avx*|ivybridge|haswell|broadwell)
3216                                                echo -xarch=avx           ;;
3217                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
3218                     btver1)                    echo -xarch=amdsse4a      ;;
3219                     btver2|bdver*)             echo -xarch=avx           ;;
3220                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3221                     k8|opteron|athlon64|athlon-fx)
3222                                                echo -xarch=sse2a         ;;
3223                     athlon*)                   echo -xarch=pentium_proa  ;;
3224                 esac
3225                 ;;
3226             -std=c99)             echo -xc99              ;;
3227             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3228             -fPIC)                echo -KPIC -xcode=pic32 ;;
3229             -W*,*)                echo $flag              ;;
3230             -f*-*|-W*|-mimpure-text)                      ;;
3231             -shared)              echo -G                 ;;
3232             *)                    echo $flag              ;;
3233         esac
3234     done
3235 }
3236
3237 tms470_flags(){
3238     for flag; do
3239         case $flag in
3240             -march=*|-mcpu=*)
3241                 case "${flag#*=}" in
3242                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3243                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3244                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3245                     armv6*|arm11*)          echo -mv=6   ;;
3246                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3247                                             echo -mv=5e  ;;
3248                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3249                 esac
3250                 ;;
3251             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3252             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3253             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3254             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3255             -msoft-float)   echo --float_support=vfplib       ;;
3256             -O[0-3]|-mf=*)  echo $flag                        ;;
3257             -g)             echo -g -mn                       ;;
3258             -pds=*)         echo $flag                        ;;
3259             -D*|-I*)        echo $flag                        ;;
3260             --gcc|--abi=*)  echo $flag                        ;;
3261             -me)            echo $flag                        ;;
3262         esac
3263     done
3264 }
3265
3266 probe_cc(){
3267     pfx=$1
3268     _cc=$2
3269
3270     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3271     unset _ld_o _ldflags _ld_lib _ld_path
3272     unset _depflags _DEPCMD _DEPFLAGS
3273     _flags_filter=echo
3274
3275     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
3276         true # no-op to avoid reading stdin in following checks
3277     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3278         _type=llvm_gcc
3279         gcc_extra_ver=$(expr "$($_cc --version | head -n1)" : '.*\((.*)\)')
3280         _ident="llvm-gcc $($_cc -dumpversion) $gcc_extra_ver"
3281         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3282         _cflags_speed='-O3'
3283         _cflags_size='-Os'
3284     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3285         _type=gcc
3286         gcc_version=$($_cc --version | head -n1)
3287         gcc_basever=$($_cc -dumpversion)
3288         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3289         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3290         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3291         if ! $_cc -dumpversion | grep -q '^2\.'; then
3292             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3293         fi
3294         _cflags_speed='-O3'
3295         _cflags_size='-Os'
3296     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3297         _type=icc
3298         _ident=$($_cc --version | head -n1)
3299         _depflags='-MMD'
3300         _cflags_speed='-O3'
3301         _cflags_size='-Os'
3302         _cflags_noopt='-O1'
3303         _flags_filter=icc_flags
3304     elif $_cc -v 2>&1 | grep -q xlc; then
3305         _type=xlc
3306         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3307         _cflags_speed='-O5'
3308         _cflags_size='-O5 -qcompact'
3309     elif $_cc -V 2>/dev/null | grep -q Compaq; then
3310         _type=ccc
3311         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
3312         _DEPFLAGS='-M'
3313         _cflags_speed='-fast'
3314         _cflags_size='-O1'
3315         _flags_filter=ccc_flags
3316     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
3317         test -d "$sysroot" || die "No valid sysroot specified."
3318         _type=armcc
3319         _ident=$($_cc --vsn | head -n1 | sed 's/.*: //')
3320         armcc_conf="$PWD/armcc.conf"
3321         $_cc --arm_linux_configure                 \
3322              --arm_linux_config_file="$armcc_conf" \
3323              --configure_sysroot="$sysroot"        \
3324              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
3325              die "Error creating armcc configuration file."
3326         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
3327         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
3328         as_default="${cross_prefix}gcc"
3329         _depflags='-MMD'
3330         _cflags_speed='-O3'
3331         _cflags_size='-Os'
3332     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
3333         _type=tms470
3334         _ident=$($_cc -version | head -n1 | tr -s ' ')
3335         _flags='--gcc --abi=eabi -me'
3336         _cc_e='-ppl -fe=$@'
3337         _cc_o='-fe=$@'
3338         _depflags='-ppa -ppd=$(@:.o=.d)'
3339         _cflags_speed='-O3 -mf=5'
3340         _cflags_size='-O3 -mf=2'
3341         _flags_filter=tms470_flags
3342     elif $_cc -v 2>&1 | grep -q clang; then
3343         _type=clang
3344         _ident=$($_cc --version | head -n1)
3345         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3346         _cflags_speed='-O3'
3347         _cflags_size='-Os'
3348     elif $_cc -V 2>&1 | grep -q Sun; then
3349         _type=suncc
3350         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
3351         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3352         _DEPFLAGS='-xM1 -xc99'
3353         _ldflags='-std=c99'
3354         _cflags_speed='-O5'
3355         _cflags_size='-O5 -xspace'
3356         _flags_filter=suncc_flags
3357     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3358         _type=pathscale
3359         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3360         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3361         _cflags_speed='-O2'
3362         _cflags_size='-Os'
3363         _flags_filter='filter_out -Wdisabled-optimization'
3364     elif $_cc -v 2>&1 | grep -q Open64; then
3365         _type=open64
3366         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3367         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3368         _cflags_speed='-O2'
3369         _cflags_size='-Os'
3370         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3371     elif $_cc -V 2>&1 | grep -q Portland; then
3372         _type=pgi
3373         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
3374         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
3375         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
3376         _cflags_size="-O2 -Munroll=c:1 $opt_common"
3377         _cflags_noopt="-O"
3378         _flags_filter=pgi_flags
3379     elif $_cc 2>&1 | grep -q Microsoft; then
3380         _type=msvc
3381         _ident=$($cc 2>&1 | head -n1)
3382         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
3383         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
3384         _cflags_speed="-O2"
3385         _cflags_size="-O1"
3386         if $_cc 2>&1 | grep -q Linker; then
3387             _ld_o='-out:$@'
3388         else
3389             _ld_o='-Fe$@'
3390         fi
3391         _cc_o='-Fo$@'
3392         _cc_e='-P -Fi$@'
3393         _flags_filter=msvc_flags
3394         _ld_lib='lib%.a'
3395         _ld_path='-libpath:'
3396         _flags='-nologo'
3397         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -Dinline=__inline -FIstdlib.h -Dstrtoll=_strtoi64'
3398         if [ $pfx = hostcc ]; then
3399             append _cflags -Dsnprintf=_snprintf
3400         fi
3401         disable stripping
3402     elif $_cc 2>&1 | grep -q Intel; then
3403         _type=icl
3404         _ident=$($cc 2>&1 | head -n1)
3405         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3406         # Not only is O3 broken on 13.x+ but it is slower on all previous
3407         # versions (tested) as well.
3408         _cflags_speed="-O2"
3409         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3410         if $_cc 2>&1 | grep -q Linker; then
3411             _ld_o='-out:$@'
3412         else
3413             _ld_o='-Fe$@'
3414         fi
3415         _cc_o='-Fo$@'
3416         _cc_e='-P'
3417         _flags_filter=icl_flags
3418         _ld_lib='lib%.a'
3419         _ld_path='-libpath:'
3420         # -Qdiag-error to make icl error when seeing certain unknown arguments
3421         _flags='-nologo -Qdiag-error:4044,10157'
3422         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
3423         # with MSVC which enables it by default.
3424         _cflags='-D_USE_MATH_DEFINES -FIstdlib.h -Dstrtoll=_strtoi64 -Qms0 -Qvec- -Qsimd- -GS -fp:precise'
3425         if [ $pfx = hostcc ]; then
3426             append _cflags -Dsnprintf=_snprintf
3427         fi
3428     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3429         _type=cparser
3430         _ident=$($_cc --version | head -n1)
3431         _depflags='-MMD'
3432         _cflags_speed='-O4'
3433         _cflags_size='-O2'
3434         _flags_filter=cparser_flags
3435     fi
3436
3437     eval ${pfx}_type=\$_type
3438     eval ${pfx}_ident=\$_ident
3439 }
3440
3441 set_ccvars(){
3442     eval ${1}_C=\${_cc_c-\${${1}_C}}
3443     eval ${1}_E=\${_cc_e-\${${1}_E}}
3444     eval ${1}_O=\${_cc_o-\${${1}_O}}
3445
3446     if [ -n "$_depflags" ]; then
3447         eval ${1}_DEPFLAGS=\$_depflags
3448     else
3449         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3450         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3451         eval DEP${1}FLAGS=\$_flags
3452     fi
3453 }
3454
3455 probe_cc cc "$cc"
3456 cflags_filter=$_flags_filter
3457 cflags_speed=$_cflags_speed
3458 cflags_size=$_cflags_size
3459 cflags_noopt=$_cflags_noopt
3460 add_cflags $_flags $_cflags
3461 cc_ldflags=$_ldflags
3462 set_ccvars CC
3463
3464 probe_cc hostcc "$host_cc"
3465 host_cflags_filter=$_flags_filter
3466 add_host_cflags  $_flags $_cflags
3467 set_ccvars HOSTCC
3468
3469 test -n "$cc_type" && enable $cc_type ||
3470     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3471
3472 : ${as_default:=$cc}
3473 : ${dep_cc_default:=$cc}
3474 : ${ld_default:=$cc}
3475 : ${host_ld_default:=$host_cc}
3476 set_default ar as dep_cc ld host_ld windres
3477
3478 probe_cc as "$as"
3479 asflags_filter=$_flags_filter
3480 add_asflags $_flags $_cflags
3481 set_ccvars AS
3482
3483 probe_cc ld "$ld"
3484 ldflags_filter=$_flags_filter
3485 add_ldflags $_flags $_ldflags
3486 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3487 LD_O=${_ld_o-$LD_O}
3488 LD_LIB=${_ld_lib-$LD_LIB}
3489 LD_PATH=${_ld_path-$LD_PATH}
3490
3491 probe_cc hostld "$host_ld"
3492 host_ldflags_filter=$_flags_filter
3493 add_host_ldflags $_flags $_ldflags
3494 HOSTLD_O=${_ld_o-$HOSTLD_O}
3495
3496 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3497     probe_cc depcc "$dep_cc"
3498     CCDEP=${_DEPCMD:-$DEPCMD}
3499     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3500     DEPCCFLAGS=$_flags
3501 fi
3502
3503 if $ar 2>&1 | grep -q Microsoft; then
3504     arflags="-nologo"
3505     ar_o='-out:$@'
3506 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3507     arflags="rq"
3508     ar_o='$@'
3509 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3510     arflags='-Xany -r -c'
3511     ar_o='$@'
3512 else
3513     arflags="rc"
3514     ar_o='$@'
3515 fi
3516
3517 add_cflags $extra_cflags
3518 add_cxxflags $extra_cxxflags
3519 add_asflags $extra_cflags
3520
3521 if test -n "$sysroot"; then
3522     case "$cc_type" in
3523         gcc|llvm_gcc|clang)
3524             add_cppflags --sysroot="$sysroot"
3525             add_ldflags --sysroot="$sysroot"
3526 # On Darwin --sysroot may be ignored, -isysroot always affects headers and linking
3527             add_cppflags -isysroot "$sysroot"
3528             add_ldflags -isysroot "$sysroot"
3529         ;;
3530         tms470)
3531             add_cppflags -I"$sysinclude"
3532             add_ldflags  --sysroot="$sysroot"
3533         ;;
3534     esac
3535 fi
3536
3537 if test "$cpu" = host; then
3538     enabled cross_compile &&
3539         die "--cpu=host makes no sense when cross-compiling."
3540
3541     case "$cc_type" in
3542         gcc|llvm_gcc)
3543             check_native(){
3544                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3545                 sed -n "/cc1.*$1=/{
3546                             s/.*$1=\\([^ ]*\\).*/\\1/
3547                             p
3548                             q
3549                         }" $TMPE
3550             }
3551             cpu=$(check_native -march || check_native -mcpu)
3552         ;;
3553     esac
3554
3555     test "${cpu:-host}" = host &&
3556         die "--cpu=host not supported with compiler $cc"
3557 fi
3558
3559 # Deal with common $arch aliases
3560 case "$arch" in
3561     aarch64|arm64)
3562         arch="aarch64"
3563     ;;
3564     arm*|iPad*|iPhone*)
3565         arch="arm"
3566     ;;
3567     mips*|IP*)
3568         arch="mips"
3569     ;;
3570     parisc*|hppa*)
3571         arch="parisc"
3572     ;;
3573     "Power Macintosh"|ppc*|powerpc*)
3574         arch="ppc"
3575     ;;
3576     s390|s390x)
3577         arch="s390"
3578     ;;
3579     sh4|sh)
3580         arch="sh4"
3581     ;;
3582     sun4u|sparc*)
3583         arch="sparc"
3584     ;;
3585     tilegx|tile-gx)
3586         arch="tilegx"
3587     ;;
3588     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
3589         arch="x86"
3590     ;;
3591 esac
3592
3593 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3594 enable $arch
3595
3596 # Add processor-specific flags
3597 if enabled aarch64; then
3598
3599     case $cpu in
3600         armv*)
3601             cpuflags="-march=$cpu"
3602         ;;
3603         *)
3604             cpuflags="-mcpu=$cpu"
3605         ;;
3606     esac
3607
3608 elif enabled alpha; then
3609
3610     cpuflags="-mcpu=$cpu"
3611
3612 elif enabled arm; then
3613
3614     check_arm_arch() {
3615         check_cpp_condition stddef.h \
3616             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3617             $cpuflags
3618     }
3619
3620     probe_arm_arch() {
3621         if   check_arm_arch 4;        then echo armv4;
3622         elif check_arm_arch 4T;       then echo armv4t;
3623         elif check_arm_arch 5;        then echo armv5;
3624         elif check_arm_arch 5E;       then echo armv5e;
3625         elif check_arm_arch 5T;       then echo armv5t;
3626         elif check_arm_arch 5TE;      then echo armv5te;
3627         elif check_arm_arch 5TEJ;     then echo armv5te;
3628         elif check_arm_arch 6;        then echo armv6;
3629         elif check_arm_arch 6J;       then echo armv6j;
3630         elif check_arm_arch 6K;       then echo armv6k;
3631         elif check_arm_arch 6Z;       then echo armv6z;
3632         elif check_arm_arch 6ZK;      then echo armv6zk;
3633         elif check_arm_arch 6T2;      then echo armv6t2;
3634         elif check_arm_arch 7;        then echo armv7;
3635         elif check_arm_arch 7A  7_A;  then echo armv7-a;
3636         elif check_arm_arch 7R  7_R;  then echo armv7-r;
3637         elif check_arm_arch 7M  7_M;  then echo armv7-m;
3638         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
3639         elif check_arm_arch 8A  8_A;  then echo armv8-a;
3640         fi
3641     }
3642
3643     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3644
3645     case $cpu in
3646         armv*)
3647             cpuflags="-march=$cpu"
3648             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3649         ;;
3650         *)
3651             cpuflags="-mcpu=$cpu"
3652             case $cpu in
3653                 cortex-a*)                               subarch=armv7a  ;;
3654                 cortex-r*)                               subarch=armv7r  ;;
3655                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3656                 arm11*)                                  subarch=armv6   ;;
3657                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3658                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3659                 *)                             subarch=$(probe_arm_arch) ;;
3660             esac
3661         ;;
3662     esac
3663
3664     case "$subarch" in
3665         armv5t*)    enable fast_clz                ;;
3666         armv[6-8]*)
3667             enable fast_clz
3668             disabled fast_unaligned || enable fast_unaligned
3669             ;;
3670     esac
3671
3672 elif enabled avr32; then
3673
3674     case $cpu in
3675         ap7[02]0[0-2])
3676             subarch="avr32_ap"
3677             cpuflags="-mpart=$cpu"
3678         ;;
3679         ap)
3680             subarch="avr32_ap"
3681             cpuflags="-march=$cpu"
3682         ;;
3683         uc3[ab]*)
3684             subarch="avr32_uc"
3685             cpuflags="-mcpu=$cpu"
3686         ;;
3687         uc)
3688             subarch="avr32_uc"
3689             cpuflags="-march=$cpu"
3690         ;;
3691     esac
3692
3693 elif enabled bfin; then
3694
3695     cpuflags="-mcpu=$cpu"
3696
3697 elif enabled mips; then
3698
3699     cpuflags="-march=$cpu"
3700
3701     case $cpu in
3702         24kc)
3703             disable mipsfpu
3704             disable mipsdspr1
3705             disable mipsdspr2
3706         ;;
3707         24kf*)
3708             disable mipsdspr1
3709             disable mipsdspr2
3710         ;;
3711         24kec|34kc|1004kc)
3712             disable mipsfpu
3713             disable mipsdspr2
3714         ;;
3715         24kef*|34kf*|1004kf*)
3716             disable mipsdspr2
3717         ;;
3718         74kc)
3719             disable mipsfpu
3720         ;;
3721     esac
3722
3723 elif enabled ppc; then
3724
3725     disable ldbrx
3726     disable vsx
3727
3728     case $(tolower $cpu) in
3729         601|ppc601|powerpc601)
3730             cpuflags="-mcpu=601"
3731             disable altivec
3732         ;;
3733         603*|ppc603*|powerpc603*)
3734             cpuflags="-mcpu=603"
3735             disable altivec
3736         ;;
3737         604*|ppc604*|powerpc604*)
3738             cpuflags="-mcpu=604"
3739             disable altivec
3740         ;;
3741         g3|75*|ppc75*|powerpc75*)
3742             cpuflags="-mcpu=750"
3743             disable altivec
3744         ;;
3745         g4|745*|ppc745*|powerpc745*)
3746             cpuflags="-mcpu=7450"
3747         ;;
3748         74*|ppc74*|powerpc74*)
3749             cpuflags="-mcpu=7400"
3750         ;;
3751         g5|970|ppc970|powerpc970)
3752             cpuflags="-mcpu=970"
3753         ;;
3754         power[3-8]*)
3755             cpuflags="-mcpu=$cpu"
3756         ;;
3757         cell)