swresample/resample_template: Add () to protect the arguments of the OUT() macro
[ffmpeg.git] / configure
1 #!/bin/sh
2 #
3 # FFmpeg configure script
4 #
5 # Copyright (c) 2000-2002 Fabrice Bellard
6 # Copyright (c) 2005-2008 Diego Biurrun
7 # Copyright (c) 2005-2008 Mans Rullgard
8 #
9
10 # Prevent locale nonsense from breaking basic text processing.
11 LC_ALL=C
12 export LC_ALL
13
14 # make sure we are running under a compatible shell
15 # try to make this part work with most shells
16
17 try_exec(){
18     echo "Trying shell $1"
19     type "$1" > /dev/null 2>&1 && exec "$@"
20 }
21
22 unset foo
23 (: ${foo%%bar}) 2> /dev/null
24 E1="$?"
25
26 (: ${foo?}) 2> /dev/null
27 E2="$?"
28
29 if test "$E1" != 0 || test "$E2" = 0; then
30     echo "Broken shell detected.  Trying alternatives."
31     export FF_CONF_EXEC
32     if test "0$FF_CONF_EXEC" -lt 1; then
33         FF_CONF_EXEC=1
34         try_exec bash "$0" "$@"
35     fi
36     if test "0$FF_CONF_EXEC" -lt 2; then
37         FF_CONF_EXEC=2
38         try_exec ksh "$0" "$@"
39     fi
40     if test "0$FF_CONF_EXEC" -lt 3; then
41         FF_CONF_EXEC=3
42         try_exec /usr/xpg4/bin/sh "$0" "$@"
43     fi
44     echo "No compatible shell script interpreter found."
45     echo "This configure script requires a POSIX-compatible shell"
46     echo "such as bash or ksh."
47     echo "THIS IS NOT A BUG IN FFMPEG, DO NOT REPORT IT AS SUCH."
48     echo "Instead, install a working POSIX-compatible shell."
49     echo "Disabling this configure test will create a broken FFmpeg."
50     if test "$BASH_VERSION" = '2.04.0(1)-release'; then
51         echo "This bash version ($BASH_VERSION) is broken on your platform."
52         echo "Upgrade to a later version if available."
53     fi
54     exit 1
55 fi
56
57 test -d /usr/xpg4/bin && PATH=/usr/xpg4/bin:$PATH
58
59 show_help(){
60     cat <<EOF
61 Usage: configure [options]
62 Options: [defaults in brackets after descriptions]
63
64 Help options:
65   --help                   print this message
66   --list-decoders          show all available decoders
67   --list-encoders          show all available encoders
68   --list-hwaccels          show all available hardware accelerators
69   --list-demuxers          show all available demuxers
70   --list-muxers            show all available muxers
71   --list-parsers           show all available parsers
72   --list-protocols         show all available protocols
73   --list-bsfs              show all available bitstream filters
74   --list-indevs            show all available input devices
75   --list-outdevs           show all available output devices
76   --list-filters           show all available filters
77
78 Standard options:
79   --logfile=FILE           log tests and output to FILE [config.log]
80   --disable-logging        do not log configure debug information
81   --fatal-warnings         fail if any configure warning is generated
82   --prefix=PREFIX          install in PREFIX [$prefix]
83   --bindir=DIR             install binaries in DIR [PREFIX/bin]
84   --datadir=DIR            install data files in DIR [PREFIX/share/ffmpeg]
85   --docdir=DIR             install documentation in DIR [PREFIX/share/doc/ffmpeg]
86   --libdir=DIR             install libs in DIR [PREFIX/lib]
87   --shlibdir=DIR           install shared libs in DIR [LIBDIR]
88   --incdir=DIR             install includes in DIR [PREFIX/include]
89   --mandir=DIR             install man page in DIR [PREFIX/share/man]
90   --enable-rpath           use rpath to allow installing libraries in paths
91                            not part of the dynamic linker search path
92                            use rpath when linking programs [USE WITH CARE]
93
94 Licensing options:
95   --enable-gpl             allow use of GPL code, the resulting libs
96                            and binaries will be under GPL [no]
97   --enable-version3        upgrade (L)GPL to version 3 [no]
98   --enable-nonfree         allow use of nonfree code, the resulting libs
99                            and binaries will be unredistributable [no]
100
101 Configuration options:
102   --disable-static         do not build static libraries [no]
103   --enable-shared          build shared libraries [no]
104   --enable-small           optimize for size instead of speed
105   --disable-runtime-cpudetect disable detecting cpu capabilities at runtime (smaller binary)
106   --enable-gray            enable full grayscale support (slower color)
107   --disable-swscale-alpha  disable alpha channel support in swscale
108   --disable-all            disable building components, libraries and programs
109   --enable-incompatible-libav-abi enable incompatible Libav fork ABI [no]
110   --enable-raise-major     increase major version numbers in sonames [no]
111
112 Program options:
113   --disable-programs       do not build command line programs
114   --disable-ffmpeg         disable ffmpeg build
115   --disable-ffplay         disable ffplay build
116   --disable-ffprobe        disable ffprobe build
117   --disable-ffserver       disable ffserver build
118
119 Documentation options:
120   --disable-doc            do not build documentation
121   --disable-htmlpages      do not build HTML documentation pages
122   --disable-manpages       do not build man documentation pages
123   --disable-podpages       do not build POD documentation pages
124   --disable-txtpages       do not build text documentation pages
125
126 Component options:
127   --disable-avdevice       disable libavdevice build
128   --disable-avcodec        disable libavcodec build
129   --disable-avformat       disable libavformat build
130   --disable-avutil         disable libavutil build
131   --disable-swresample     disable libswresample build
132   --disable-swscale        disable libswscale build
133   --disable-postproc       disable libpostproc build
134   --disable-avfilter       disable libavfilter build
135   --enable-avresample      enable libavresample build [no]
136   --disable-pthreads       disable pthreads [auto]
137   --disable-w32threads     disable Win32 threads [auto]
138   --disable-os2threads     disable OS/2 threads [auto]
139   --disable-network        disable network support [no]
140   --disable-dct            disable DCT code
141   --disable-dwt            disable DWT code
142   --disable-error-resilience disable error resilience code
143   --disable-lsp            disable LSP code
144   --disable-lzo            disable LZO decoder code
145   --disable-mdct           disable MDCT code
146   --disable-rdft           disable RDFT code
147   --disable-fft            disable FFT code
148   --disable-faan           disable floating point AAN (I)DCT code
149   --disable-pixelutils     disable pixel utils in libavutil
150
151 Hardware accelerators:
152   --disable-dxva2          disable DXVA2 code [autodetect]
153   --disable-vaapi          disable VAAPI code [autodetect]
154   --disable-vda            disable VDA code [autodetect]
155   --disable-vdpau          disable VDPAU code [autodetect]
156
157 Individual component options:
158   --disable-everything     disable all components listed below
159   --disable-encoder=NAME   disable encoder NAME
160   --enable-encoder=NAME    enable encoder NAME
161   --disable-encoders       disable all encoders
162   --disable-decoder=NAME   disable decoder NAME
163   --enable-decoder=NAME    enable decoder NAME
164   --disable-decoders       disable all decoders
165   --disable-hwaccel=NAME   disable hwaccel NAME
166   --enable-hwaccel=NAME    enable hwaccel NAME
167   --disable-hwaccels       disable all hwaccels
168   --disable-muxer=NAME     disable muxer NAME
169   --enable-muxer=NAME      enable muxer NAME
170   --disable-muxers         disable all muxers
171   --disable-demuxer=NAME   disable demuxer NAME
172   --enable-demuxer=NAME    enable demuxer NAME
173   --disable-demuxers       disable all demuxers
174   --enable-parser=NAME     enable parser NAME
175   --disable-parser=NAME    disable parser NAME
176   --disable-parsers        disable all parsers
177   --enable-bsf=NAME        enable bitstream filter NAME
178   --disable-bsf=NAME       disable bitstream filter NAME
179   --disable-bsfs           disable all bitstream filters
180   --enable-protocol=NAME   enable protocol NAME
181   --disable-protocol=NAME  disable protocol NAME
182   --disable-protocols      disable all protocols
183   --enable-indev=NAME      enable input device NAME
184   --disable-indev=NAME     disable input device NAME
185   --disable-indevs         disable input devices
186   --enable-outdev=NAME     enable output device NAME
187   --disable-outdev=NAME    disable output device NAME
188   --disable-outdevs        disable output devices
189   --disable-devices        disable all devices
190   --enable-filter=NAME     enable filter NAME
191   --disable-filter=NAME    disable filter NAME
192   --disable-filters        disable all filters
193
194 External library support:
195   --enable-avisynth        enable reading of AviSynth script files [no]
196   --disable-bzlib          disable bzlib [autodetect]
197   --enable-fontconfig      enable fontconfig, useful for drawtext filter [no]
198   --enable-frei0r          enable frei0r video filtering [no]
199   --enable-gnutls          enable gnutls, needed for https support
200                            if openssl is not used [no]
201   --disable-iconv          disable iconv [autodetect]
202   --enable-ladspa          enable LADSPA audio filtering [no]
203   --enable-libaacplus      enable AAC+ encoding via libaacplus [no]
204   --enable-libass          enable libass subtitles rendering,
205                            needed for subtitles and ass filter [no]
206   --enable-libbluray       enable BluRay reading using libbluray [no]
207   --enable-libbs2b         enable bs2b DSP library [no]
208   --enable-libcaca         enable textual display using libcaca [no]
209   --enable-libcelt         enable CELT decoding via libcelt [no]
210   --enable-libcdio         enable audio CD grabbing with libcdio [no]
211   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
212                            and libraw1394 [no]
213   --enable-libfaac         enable AAC encoding via libfaac [no]
214   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
215   --enable-libflite        enable flite (voice synthesis) support via libflite [no]
216   --enable-libfreetype     enable libfreetype, needed for drawtext filter [no]
217   --enable-libfribidi      enable libfribidi, improves drawtext filter [no]
218   --enable-libgme          enable Game Music Emu via libgme [no]
219   --enable-libgsm          enable GSM de/encoding via libgsm [no]
220   --enable-libiec61883     enable iec61883 via libiec61883 [no]
221   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
222   --enable-libmodplug      enable ModPlug via libmodplug [no]
223   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
224   --enable-libnut          enable NUT (de)muxing via libnut,
225                            native (de)muxer exists [no]
226   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
227   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
228   --enable-libopencv       enable video filtering via libopencv [no]
229   --enable-libopenh264     enable H.264 encoding via OpenH264 [no]
230   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
231   --enable-libopus         enable Opus de/encoding via libopus [no]
232   --enable-libpulse        enable Pulseaudio input via libpulse [no]
233   --enable-libquvi         enable quvi input via libquvi [no]
234   --enable-librtmp         enable RTMP[E] support via librtmp [no]
235   --enable-libschroedinger enable Dirac de/encoding via libschroedinger [no]
236   --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
237   --enable-libsmbclient    enable Samba protocol via libsmbclient [no]
238   --enable-libsoxr         enable Include libsoxr resampling [no]
239   --enable-libspeex        enable Speex de/encoding via libspeex [no]
240   --enable-libssh          enable SFTP protocol via libssh [no]
241   --enable-libstagefright-h264  enable H.264 decoding via libstagefright [no]
242   --enable-libtheora       enable Theora encoding via libtheora [no]
243   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
244   --enable-libutvideo      enable Ut Video encoding and decoding via libutvideo [no]
245   --enable-libv4l2         enable libv4l2/v4l-utils [no]
246   --enable-libvidstab      enable video stabilization using vid.stab [no]
247   --enable-libvo-aacenc    enable AAC encoding via libvo-aacenc [no]
248   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
249   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
250                            native implementation exists [no]
251   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
252   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
253   --enable-libwebp         enable WebP encoding via libwebp [no]
254   --enable-libx264         enable H.264 encoding via x264 [no]
255   --enable-libx265         enable HEVC encoding via x265 [no]
256   --enable-libxavs         enable AVS encoding via xavs [no]
257   --enable-libxcb          enable X11 grabbing using XCB [auto]
258   --enable-libxcb-shm      enable X11 grabbing shm communication [auto]
259   --enable-libxcb-xfixes   enable X11 grabbing mouse rendering [auto]
260   --enable-libxcb-shape    enable X11 grabbing shape rendering [auto]
261   --enable-libxvid         enable Xvid encoding via xvidcore,
262                            native MPEG-4/Xvid encoder exists [no]
263   --enable-libzmq          enable message passing via libzmq [no]
264   --enable-libzvbi         enable teletext support via libzvbi [no]
265   --disable-lzma           disable lzma [autodetect]
266   --enable-decklink        enable Blackmagick DeckLink I/O support [no]
267   --enable-nvenc           enable NVIDIA NVENC support [no]
268   --enable-openal          enable OpenAL 1.1 capture support [no]
269   --enable-opencl          enable OpenCL code
270   --enable-opengl          enable OpenGL rendering [no]
271   --enable-openssl         enable openssl, needed for https support
272                            if gnutls is not used [no]
273   --disable-sdl            disable sdl [autodetect]
274   --enable-x11grab         enable X11 grabbing (legacy) [no]
275   --disable-xlib           disable xlib [autodetect]
276   --disable-zlib           disable zlib [autodetect]
277
278 Toolchain options:
279   --arch=ARCH              select architecture [$arch]
280   --cpu=CPU                select the minimum required CPU (affects
281                            instruction selection, may crash on older CPUs)
282   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
283   --progs-suffix=SUFFIX    program name suffix []
284   --enable-cross-compile   assume a cross-compiler is used
285   --sysroot=PATH           root of cross-build tree
286   --sysinclude=PATH        location of cross-build system headers
287   --target-os=OS           compiler targets OS [$target_os]
288   --target-exec=CMD        command to run executables on target
289   --target-path=DIR        path to view of build directory on target
290   --target-samples=DIR     path to samples directory on target
291   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
292   --toolchain=NAME         set tool defaults according to NAME
293   --nm=NM                  use nm tool NM [$nm_default]
294   --ar=AR                  use archive tool AR [$ar_default]
295   --as=AS                  use assembler AS [$as_default]
296   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
297   --yasmexe=EXE            use yasm-compatible assembler EXE [$yasmexe_default]
298   --cc=CC                  use C compiler CC [$cc_default]
299   --cxx=CXX                use C compiler CXX [$cxx_default]
300   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
301   --ld=LD                  use linker LD [$ld_default]
302   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
303   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
304   --ranlib=RANLIB          use ranlib RANLIB [$ranlib_default]
305   --doxygen=DOXYGEN        use DOXYGEN to generate API doc [$doxygen_default]
306   --host-cc=HOSTCC         use host C compiler HOSTCC
307   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
308   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
309   --host-ld=HOSTLD         use host linker HOSTLD
310   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
311   --host-libs=HLIBS        use libs HLIBS when linking for host
312   --host-os=OS             compiler host OS [$target_os]
313   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
314   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
315   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
316   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
317   --extra-libs=ELIBS       add ELIBS [$ELIBS]
318   --extra-version=STRING   version string suffix []
319   --optflags=OPTFLAGS      override optimization-related compiler flags
320   --build-suffix=SUFFIX    library name suffix []
321   --enable-pic             build position-independent code
322   --enable-thumb           compile for Thumb instruction set
323   --enable-lto             use link-time optimization
324
325 Advanced options (experts only):
326   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
327   --disable-symver         disable symbol versioning
328   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
329   --disable-safe-bitstream-reader
330                            disable buffer boundary checking in bitreaders
331                            (faster, but may crash)
332   --enable-memalign-hack   emulate memalign, interferes with memory debuggers
333   --sws-max-filter-size=N  the max filter size swscale uses [$sws_max_filter_size_default]
334
335 Optimization options (experts only):
336   --disable-asm            disable all assembly optimizations
337   --disable-altivec        disable AltiVec optimizations
338   --disable-amd3dnow       disable 3DNow! optimizations
339   --disable-amd3dnowext    disable 3DNow! extended optimizations
340   --disable-mmx            disable MMX optimizations
341   --disable-mmxext         disable MMXEXT optimizations
342   --disable-sse            disable SSE optimizations
343   --disable-sse2           disable SSE2 optimizations
344   --disable-sse3           disable SSE3 optimizations
345   --disable-ssse3          disable SSSE3 optimizations
346   --disable-sse4           disable SSE4 optimizations
347   --disable-sse42          disable SSE4.2 optimizations
348   --disable-avx            disable AVX optimizations
349   --disable-xop            disable XOP optimizations
350   --disable-fma3           disable FMA3 optimizations
351   --disable-fma4           disable FMA4 optimizations
352   --disable-avx2           disable AVX2 optimizations
353   --disable-armv5te        disable armv5te optimizations
354   --disable-armv6          disable armv6 optimizations
355   --disable-armv6t2        disable armv6t2 optimizations
356   --disable-vfp            disable VFP optimizations
357   --disable-neon           disable NEON optimizations
358   --disable-inline-asm     disable use of inline assembly
359   --disable-yasm           disable use of nasm/yasm assembly
360   --disable-mips32r2       disable MIPS32R2 optimizations
361   --disable-mipsdspr1      disable MIPS DSP ASE R1 optimizations
362   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
363   --disable-mipsfpu        disable floating point MIPS optimizations
364   --disable-fast-unaligned consider unaligned accesses slow
365
366 Developer options (useful when working on FFmpeg itself):
367   --disable-debug          disable debugging symbols
368   --enable-debug=LEVEL     set the debug level [$debuglevel]
369   --disable-optimizations  disable compiler optimizations
370   --enable-extra-warnings  enable more compiler warnings
371   --disable-stripping      disable stripping of executables and shared libraries
372   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
373                            2 causes a slowdown at runtime.
374   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
375   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
376                            leaks and errors, using the specified valgrind binary.
377                            Cannot be combined with --target-exec
378   --enable-ftrapv          Trap arithmetic overflows
379   --samples=PATH           location of test samples for FATE, if not set use
380                            \$FATE_SAMPLES at make invocation time.
381   --enable-neon-clobber-test check NEON registers for clobbering (should be
382                            used only for debugging purposes)
383   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
384                            should be used only for debugging purposes)
385   --enable-random          randomly enable/disable components
386   --disable-random
387   --enable-random=LIST     randomly enable/disable specific components or
388   --disable-random=LIST    component groups. LIST is a comma-separated list
389                            of NAME[:PROB] entries where NAME is a component
390                            (group) and PROB the probability associated with
391                            NAME (default 0.5).
392   --random-seed=VALUE      seed value for --enable/disable-random
393
394 NOTE: Object files are built at the place where configure is launched.
395 EOF
396   exit 0
397 }
398
399 quotes='""'
400
401 log(){
402     echo "$@" >> $logfile
403 }
404
405 log_file(){
406     log BEGIN $1
407     pr -n -t $1 >> $logfile
408     log END $1
409 }
410
411 echolog(){
412     log "$@"
413     echo "$@"
414 }
415
416 warn(){
417     log "WARNING: $*"
418     WARNINGS="${WARNINGS}WARNING: $*\n"
419 }
420
421 die(){
422     echolog "$@"
423     cat <<EOF
424
425 If you think configure made a mistake, make sure you are using the latest
426 version from Git.  If the latest version fails, report the problem to the
427 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
428 EOF
429     if disabled logging; then
430         cat <<EOF
431 Rerun configure with logging enabled (do not use --disable-logging), and
432 include the log this produces with your report.
433 EOF
434     else
435         cat <<EOF
436 Include the log file "$logfile" produced by configure as this will help
437 solve the problem.
438 EOF
439     fi
440     exit 1
441 }
442
443 # Avoid locale weirdness, besides we really just want to translate ASCII.
444 toupper(){
445     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
446 }
447
448 tolower(){
449     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
450 }
451
452 c_escape(){
453     echo "$*" | sed 's/["\\]/\\\0/g'
454 }
455
456 sh_quote(){
457     v=$(echo "$1" | sed "s/'/'\\\\''/g")
458     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
459     echo "$v"
460 }
461
462 cleanws(){
463     echo "$@" | sed 's/^ *//;s/  */ /g;s/ *$//;s/\\r//g'
464 }
465
466 filter(){
467     pat=$1
468     shift
469     for v; do
470         eval "case $v in $pat) echo $v ;; esac"
471     done
472 }
473
474 filter_out(){
475     pat=$1
476     shift
477     for v; do
478         eval "case $v in $pat) ;; *) echo $v ;; esac"
479     done
480 }
481
482 map(){
483     m=$1
484     shift
485     for v; do eval $m; done
486 }
487
488 add_suffix(){
489     suffix=$1
490     shift
491     for v; do echo ${v}${suffix}; done
492 }
493
494 set_all(){
495     value=$1
496     shift
497     for var in $*; do
498         eval $var=$value
499     done
500 }
501
502 set_weak(){
503     value=$1
504     shift
505     for var; do
506         eval : \${$var:=$value}
507     done
508 }
509
510 sanitize_var_name(){
511     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
512 }
513
514 set_safe(){
515     var=$1
516     shift
517     eval $(sanitize_var_name "$var")='$*'
518 }
519
520 get_safe(){
521     eval echo \$$(sanitize_var_name "$1")
522 }
523
524 pushvar(){
525     for pvar in $*; do
526         eval level=\${${pvar}_level:=0}
527         eval ${pvar}_${level}="\$$pvar"
528         eval ${pvar}_level=$(($level+1))
529     done
530 }
531
532 popvar(){
533     for pvar in $*; do
534         eval level=\${${pvar}_level:-0}
535         test $level = 0 && continue
536         eval level=$(($level-1))
537         eval $pvar="\${${pvar}_${level}}"
538         eval ${pvar}_level=$level
539         eval unset ${pvar}_${level}
540     done
541 }
542
543 enable(){
544     set_all yes $*
545 }
546
547 disable(){
548     set_all no $*
549 }
550
551 enable_weak(){
552     set_weak yes $*
553 }
554
555 disable_weak(){
556     set_weak no $*
557 }
558
559 enable_safe(){
560     for var; do
561         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
562     done
563 }
564
565 disable_safe(){
566     for var; do
567         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
568     done
569 }
570
571 do_enable_deep(){
572     for var; do
573         enabled $var && continue
574         eval sel="\$${var}_select"
575         eval sgs="\$${var}_suggest"
576         pushvar var sgs
577         enable_deep $sel
578         popvar sgs
579         enable_deep_weak $sgs
580         popvar var
581     done
582 }
583
584 enable_deep(){
585     do_enable_deep $*
586     enable $*
587 }
588
589 enable_deep_weak(){
590     for var; do
591         disabled $var && continue
592         pushvar var
593         do_enable_deep $var
594         popvar var
595         enable_weak $var
596     done
597 }
598
599 enabled(){
600     test "${1#!}" = "$1" && op== || op=!=
601     eval test "x\$${1#!}" $op "xyes"
602 }
603
604 disabled(){
605     test "${1#!}" = "$1" && op== || op=!=
606     eval test "x\$${1#!}" $op "xno"
607 }
608
609 enabled_all(){
610     for opt; do
611         enabled $opt || return 1
612     done
613 }
614
615 disabled_all(){
616     for opt; do
617         disabled $opt || return 1
618     done
619 }
620
621 enabled_any(){
622     for opt; do
623         enabled $opt && return 0
624     done
625 }
626
627 disabled_any(){
628     for opt; do
629         disabled $opt && return 0
630     done
631     return 1
632 }
633
634 set_default(){
635     for opt; do
636         eval : \${$opt:=\$${opt}_default}
637     done
638 }
639
640 is_in(){
641     value=$1
642     shift
643     for var in $*; do
644         [ $var = $value ] && return 0
645     done
646     return 1
647 }
648
649 do_check_deps(){
650     for cfg; do
651         cfg="${cfg#!}"
652         enabled ${cfg}_checking && die "Circular dependency for $cfg."
653         disabled ${cfg}_checking && continue
654         enable ${cfg}_checking
655         append allopts $cfg
656
657         eval dep_all="\$${cfg}_deps"
658         eval dep_any="\$${cfg}_deps_any"
659         eval dep_sel="\$${cfg}_select"
660         eval dep_sgs="\$${cfg}_suggest"
661         eval dep_ifa="\$${cfg}_if"
662         eval dep_ifn="\$${cfg}_if_any"
663
664         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
665         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
666         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
667
668         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
669         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
670         enabled_all  $dep_all || disable $cfg
671         enabled_any  $dep_any || disable $cfg
672         disabled_any $dep_sel && disable $cfg
673
674         if enabled $cfg; then
675             enable_deep $dep_sel
676             enable_deep_weak $dep_sgs
677         fi
678
679         disable ${cfg}_checking
680     done
681 }
682
683 check_deps(){
684     unset allopts
685
686     do_check_deps "$@"
687
688     for cfg in $allopts; do
689         enabled $cfg || continue
690         eval dep_extralibs="\$${cfg}_extralibs"
691         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
692     done
693 }
694
695 print_config(){
696     pfx=$1
697     files=$2
698     shift 2
699     map 'eval echo "$v \${$v:-no}"' "$@" |
700     awk "BEGIN { split(\"$files\", files) }
701         {
702             c = \"$pfx\" toupper(\$1);
703             v = \$2;
704             sub(/yes/, 1, v);
705             sub(/no/,  0, v);
706             for (f in files) {
707                 file = files[f];
708                 if (file ~ /\\.h\$/) {
709                     printf(\"#define %s %d\\n\", c, v) >>file;
710                 } else if (file ~ /\\.asm\$/) {
711                     printf(\"%%define %s %d\\n\", c, v) >>file;
712                 } else if (file ~ /\\.mak\$/) {
713                     n = -v ? \"\" : \"!\";
714                     printf(\"%s%s=yes\\n\", n, c) >>file;
715                 } else if (file ~ /\\.texi\$/) {
716                     pre = -v ? \"\" : \"@c \";
717                     yesno = \$2;
718                     c2 = tolower(c);
719                     gsub(/_/, \"-\", c2);
720                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
721                 }
722             }
723         }"
724 }
725
726 print_enabled(){
727     suf=$1
728     shift
729     for v; do
730         enabled $v && printf "%s\n" ${v%$suf};
731     done
732 }
733
734 append(){
735     var=$1
736     shift
737     eval "$var=\"\$$var $*\""
738 }
739
740 prepend(){
741     var=$1
742     shift
743     eval "$var=\"$* \$$var\""
744 }
745
746 unique(){
747     var=$1
748     uniq_list=""
749     for tok in $(eval echo \$$var); do
750         uniq_list="$(filter_out $tok $uniq_list) $tok"
751     done
752     eval "$var=\"${uniq_list}\""
753 }
754
755 add_cppflags(){
756     append CPPFLAGS "$@"
757 }
758
759 add_cflags(){
760     append CFLAGS $($cflags_filter "$@")
761 }
762
763 add_cxxflags(){
764     append CXXFLAGS $($cflags_filter "$@")
765 }
766
767 add_asflags(){
768     append ASFLAGS $($asflags_filter "$@")
769 }
770
771 add_ldflags(){
772     append LDFLAGS $($ldflags_filter "$@")
773 }
774
775 add_ldexeflags(){
776     append LDEXEFLAGS $($ldflags_filter "$@")
777 }
778
779 add_stripflags(){
780     append ASMSTRIPFLAGS "$@"
781 }
782
783 add_extralibs(){
784     prepend extralibs $($ldflags_filter "$@")
785 }
786
787 add_host_cppflags(){
788     append host_cppflags "$@"
789 }
790
791 add_host_cflags(){
792     append host_cflags $($host_cflags_filter "$@")
793 }
794
795 add_host_ldflags(){
796     append host_ldflags $($host_ldflags_filter "$@")
797 }
798
799 add_compat(){
800     append compat_objs $1
801     shift
802     map 'add_cppflags -D$v' "$@"
803 }
804
805 check_cmd(){
806     log "$@"
807     "$@" >> $logfile 2>&1
808 }
809
810 check_stat(){
811     log check_stat "$@"
812     stat "$1" >> $logfile 2>&1
813 }
814
815 cc_o(){
816     eval printf '%s\\n' $CC_O
817 }
818
819 cc_e(){
820     eval printf '%s\\n' $CC_E
821 }
822
823 check_cc(){
824     log check_cc "$@"
825     cat > $TMPC
826     log_file $TMPC
827     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
828 }
829
830 check_cxx(){
831     log check_cxx "$@"
832     cat > $TMPCPP
833     log_file $TMPCPP
834     check_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
835 }
836
837 check_oc(){
838     log check_oc "$@"
839     cat > $TMPM
840     log_file $TMPM
841     check_cmd $cc -Werror=missing-prototypes $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPM
842 }
843
844 check_cpp(){
845     log check_cpp "$@"
846     cat > $TMPC
847     log_file $TMPC
848     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
849 }
850
851 as_o(){
852     eval printf '%s\\n' $AS_O
853 }
854
855 check_as(){
856     log check_as "$@"
857     cat > $TMPS
858     log_file $TMPS
859     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
860 }
861
862 check_inline_asm(){
863     log check_inline_asm "$@"
864     name="$1"
865     code="$2"
866     shift 2
867     disable $name
868     check_cc "$@" <<EOF && enable $name
869 void foo(void){ __asm__ volatile($code); }
870 EOF
871 }
872
873 check_insn(){
874     log check_insn "$@"
875     check_inline_asm ${1}_inline "\"$2\""
876     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
877 }
878
879 check_yasm(){
880     log check_yasm "$@"
881     echo "$1" > $TMPS
882     log_file $TMPS
883     shift 1
884     check_cmd $yasmexe $YASMFLAGS -Werror "$@" -o $TMPO $TMPS
885 }
886
887 ld_o(){
888     eval printf '%s\\n' $LD_O
889 }
890
891 check_ld(){
892     log check_ld "$@"
893     type=$1
894     shift 1
895     flags=$(filter_out '-l*|*.so' $@)
896     libs=$(filter '-l*|*.so' $@)
897     check_$type $($cflags_filter $flags) || return
898     flags=$($ldflags_filter $flags)
899     libs=$($ldflags_filter $libs)
900     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
901 }
902
903 print_include(){
904     hdr=$1
905     test "${hdr%.h}" = "${hdr}" &&
906         echo "#include $hdr"    ||
907         echo "#include <$hdr>"
908 }
909
910 check_code(){
911     log check_code "$@"
912     check=$1
913     headers=$2
914     code=$3
915     shift 3
916     {
917         for hdr in $headers; do
918             print_include $hdr
919         done
920         echo "int main(void) { $code; return 0; }"
921     } | check_$check "$@"
922 }
923
924 check_cppflags(){
925     log check_cppflags "$@"
926     check_cc "$@" <<EOF && append CPPFLAGS "$@"
927 int x;
928 EOF
929 }
930
931 test_cflags(){
932     log test_cflags "$@"
933     set -- $($cflags_filter "$@")
934     check_cc "$@" <<EOF
935 int x;
936 EOF
937 }
938
939 check_cflags(){
940     log check_cflags "$@"
941     test_cflags "$@" && add_cflags "$@"
942 }
943
944 check_cxxflags(){
945     log check_cxxflags "$@"
946     set -- $($cflags_filter "$@")
947     check_cxx "$@" <<EOF && append CXXFLAGS "$@"
948 int x;
949 EOF
950 }
951
952 test_ldflags(){
953     log test_ldflags "$@"
954     check_ld "cc" "$@" <<EOF
955 int main(void){ return 0; }
956 EOF
957 }
958
959 check_ldflags(){
960     log check_ldflags "$@"
961     test_ldflags "$@" && add_ldflags "$@"
962 }
963
964 test_stripflags(){
965     log test_stripflags "$@"
966     # call check_cc to get a fresh TMPO
967     check_cc <<EOF
968 int main(void) { return 0; }
969 EOF
970     check_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
971 }
972
973 check_stripflags(){
974     log check_stripflags "$@"
975     test_stripflags "$@" && add_stripflags "$@"
976 }
977
978 check_header(){
979     log check_header "$@"
980     header=$1
981     shift
982     disable_safe $header
983     check_cpp "$@" <<EOF && enable_safe $header
984 #include <$header>
985 int x;
986 EOF
987 }
988
989 check_header_oc(){
990     log check_header_oc "$@"
991     rm -f -- "$TMPO"
992     header=$1
993     shift
994     disable_safe $header
995     {
996        echo "#include <$header>"
997        echo "int main(void) { return 0; }"
998     } | check_oc && check_stat "$TMPO" && enable_safe $headers
999 }
1000
1001 check_func(){
1002     log check_func "$@"
1003     func=$1
1004     shift
1005     disable $func
1006     check_ld "cc" "$@" <<EOF && enable $func
1007 extern int $func();
1008 int main(void){ $func(); }
1009 EOF
1010 }
1011
1012 check_mathfunc(){
1013     log check_mathfunc "$@"
1014     func=$1
1015     narg=$2
1016     shift 2
1017     test $narg = 2 && args="f, g" || args="f"
1018     disable $func
1019     check_ld "cc" "$@" <<EOF && enable $func
1020 #include <math.h>
1021 float foo(float f, float g) { return $func($args); }
1022 int main(void){ return (int) foo; }
1023 EOF
1024 }
1025
1026 check_func_headers(){
1027     log check_func_headers "$@"
1028     headers=$1
1029     funcs=$2
1030     shift 2
1031     {
1032         for hdr in $headers; do
1033             print_include $hdr
1034         done
1035         for func in $funcs; do
1036             echo "long check_$func(void) { return (long) $func; }"
1037         done
1038         echo "int main(void) { return 0; }"
1039     } | check_ld "cc" "$@" && enable $funcs && enable_safe $headers
1040 }
1041
1042 check_class_headers_cpp(){
1043     log check_class_headers_cpp "$@"
1044     headers=$1
1045     classes=$2
1046     shift 2
1047     {
1048         for hdr in $headers; do
1049             echo "#include <$hdr>"
1050         done
1051         echo "int main(void) { "
1052         i=1
1053         for class in $classes; do
1054             echo "$class obj$i;"
1055             i=$(expr $i + 1)
1056         done
1057         echo "return 0; }"
1058     } | check_ld "cxx" "$@" && enable $funcs && enable_safe $headers
1059 }
1060
1061 check_cpp_condition(){
1062     log check_cpp_condition "$@"
1063     header=$1
1064     condition=$2
1065     shift 2
1066     check_cpp "$@" <<EOF
1067 #include <$header>
1068 #if !($condition)
1069 #error "unsatisfied condition: $condition"
1070 #endif
1071 EOF
1072 }
1073
1074 check_lib(){
1075     log check_lib "$@"
1076     header="$1"
1077     func="$2"
1078     shift 2
1079     check_header $header && check_func $func "$@" && add_extralibs "$@"
1080 }
1081
1082 check_lib2(){
1083     log check_lib2 "$@"
1084     headers="$1"
1085     funcs="$2"
1086     shift 2
1087     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
1088 }
1089
1090 check_lib_cpp(){
1091     log check_lib_cpp "$@"
1092     headers="$1"
1093     classes="$2"
1094     shift 2
1095     check_class_headers_cpp "$headers" "$classes" "$@" && add_extralibs "$@"
1096 }
1097
1098 check_pkg_config(){
1099     log check_pkg_config "$@"
1100     pkgandversion="$1"
1101     pkg="${1%% *}"
1102     headers="$2"
1103     funcs="$3"
1104     shift 3
1105     check_cmd $pkg_config --exists --print-errors $pkgandversion || return
1106     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1107     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1108     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1109         set_safe ${pkg}_cflags $pkg_cflags   &&
1110         set_safe ${pkg}_libs   $pkg_libs
1111 }
1112
1113 check_exec(){
1114     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1115 }
1116
1117 check_exec_crash(){
1118     code=$(cat)
1119
1120     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1121     # are safe but may not be available everywhere.  Thus we use
1122     # raise(SIGTERM) instead.  The check is run in a subshell so we
1123     # can redirect the "Terminated" message from the shell.  SIGBUS
1124     # is not defined by standard C so it is used conditionally.
1125
1126     (check_exec "$@") >> $logfile 2>&1 <<EOF
1127 #include <signal.h>
1128 static void sighandler(int sig){
1129     raise(SIGTERM);
1130 }
1131 int foo(void){
1132     $code
1133 }
1134 int (*func_ptr)(void) = foo;
1135 int main(void){
1136     signal(SIGILL, sighandler);
1137     signal(SIGFPE, sighandler);
1138     signal(SIGSEGV, sighandler);
1139 #ifdef SIGBUS
1140     signal(SIGBUS, sighandler);
1141 #endif
1142     return func_ptr();
1143 }
1144 EOF
1145 }
1146
1147 check_type(){
1148     log check_type "$@"
1149     headers=$1
1150     type=$2
1151     shift 2
1152     disable_safe "$type"
1153     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1154 }
1155
1156 check_struct(){
1157     log check_struct "$@"
1158     headers=$1
1159     struct=$2
1160     member=$3
1161     shift 3
1162     disable_safe "${struct}_${member}"
1163     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1164         enable_safe "${struct}_${member}"
1165 }
1166
1167 check_builtin(){
1168     log check_builtin "$@"
1169     name=$1
1170     headers=$2
1171     builtin=$3
1172     shift 3
1173     disable "$name"
1174     check_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1175 }
1176
1177 check_compile_assert(){
1178     log check_compile_assert "$@"
1179     name=$1
1180     headers=$2
1181     condition=$3
1182     shift 3
1183     disable "$name"
1184     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1185 }
1186
1187 require(){
1188     name="$1"
1189     header="$2"
1190     func="$3"
1191     shift 3
1192     check_lib $header $func "$@" || die "ERROR: $name not found"
1193 }
1194
1195 require2(){
1196     name="$1"
1197     headers="$2"
1198     func="$3"
1199     shift 3
1200     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
1201 }
1202
1203 require_cpp(){
1204     name="$1"
1205     headers="$2"
1206     classes="$3"
1207     shift 3
1208     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1209 }
1210
1211 use_pkg_config(){
1212     pkg="$1"
1213     check_pkg_config "$@" || return 1
1214     add_cflags    $(get_safe ${pkg}_cflags)
1215     add_extralibs $(get_safe ${pkg}_libs)
1216 }
1217
1218 require_pkg_config(){
1219     use_pkg_config "$@" || die "ERROR: $pkg not found using pkg-config$pkg_config_fail_message"
1220 }
1221
1222 require_libfreetype(){
1223     log require_libfreetype "$@"
1224     pkg="freetype2"
1225     check_cmd $pkg_config --exists --print-errors $pkg \
1226       || die "ERROR: $pkg not found"
1227     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1228     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1229     {
1230         echo "#include <ft2build.h>"
1231         echo "#include FT_FREETYPE_H"
1232         echo "long check_func(void) { return (long) FT_Init_FreeType; }"
1233         echo "int main(void) { return 0; }"
1234     } | check_ld "cc" $pkg_cflags $pkg_libs \
1235       && set_safe ${pkg}_cflags $pkg_cflags \
1236       && set_safe ${pkg}_libs   $pkg_libs \
1237       || die "ERROR: $pkg not found"
1238     add_cflags    $(get_safe ${pkg}_cflags)
1239     add_extralibs $(get_safe ${pkg}_libs)
1240 }
1241
1242 hostcc_e(){
1243     eval printf '%s\\n' $HOSTCC_E
1244 }
1245
1246 hostcc_o(){
1247     eval printf '%s\\n' $HOSTCC_O
1248 }
1249
1250 check_host_cc(){
1251     log check_host_cc "$@"
1252     cat > $TMPC
1253     log_file $TMPC
1254     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1255 }
1256
1257 check_host_cpp(){
1258     log check_host_cpp "$@"
1259     cat > $TMPC
1260     log_file $TMPC
1261     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1262 }
1263
1264 check_host_cppflags(){
1265     log check_host_cppflags "$@"
1266     check_host_cc "$@" <<EOF && append host_cppflags "$@"
1267 int x;
1268 EOF
1269 }
1270
1271 check_host_cflags(){
1272     log check_host_cflags "$@"
1273     set -- $($host_cflags_filter "$@")
1274     check_host_cc "$@" <<EOF && append host_cflags "$@"
1275 int x;
1276 EOF
1277 }
1278
1279 check_host_cpp_condition(){
1280     log check_host_cpp_condition "$@"
1281     header=$1
1282     condition=$2
1283     shift 2
1284     check_host_cpp "$@" <<EOF
1285 #include <$header>
1286 #if !($condition)
1287 #error "unsatisfied condition: $condition"
1288 #endif
1289 EOF
1290 }
1291
1292 apply(){
1293     file=$1
1294     shift
1295     "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
1296 }
1297
1298 cp_if_changed(){
1299     cmp -s "$1" "$2" && echo "$2 is unchanged" && return
1300     mkdir -p "$(dirname $2)"
1301     $cp_f "$1" "$2"
1302 }
1303
1304 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1305 # system-dependent things.
1306
1307 COMPONENT_LIST="
1308     bsfs
1309     decoders
1310     demuxers
1311     encoders
1312     filters
1313     hwaccels
1314     indevs
1315     muxers
1316     outdevs
1317     parsers
1318     protocols
1319 "
1320
1321 EXAMPLE_LIST="
1322     avio_reading_example
1323     decoding_encoding_example
1324     demuxing_decoding_example
1325     extract_mvs_example
1326     filter_audio_example
1327     filtering_audio_example
1328     filtering_video_example
1329     metadata_example
1330     muxing_example
1331     remuxing_example
1332     resampling_audio_example
1333     scaling_video_example
1334     transcode_aac_example
1335     transcoding_example
1336 "
1337
1338 EXTERNAL_LIBRARY_LIST="
1339     avisynth
1340     bzlib
1341     crystalhd
1342     decklink
1343     frei0r
1344     gnutls
1345     iconv
1346     ladspa
1347     libaacplus
1348     libass
1349     libbluray
1350     libbs2b
1351     libcaca
1352     libcdio
1353     libcelt
1354     libdc1394
1355     libfaac
1356     libfdk_aac
1357     libflite
1358     libfontconfig
1359     libfreetype
1360     libfribidi
1361     libgme
1362     libgsm
1363     libiec61883
1364     libilbc
1365     libmodplug
1366     libmp3lame
1367     libnut
1368     libopencore_amrnb
1369     libopencore_amrwb
1370     libopencv
1371     libopenh264
1372     libopenjpeg
1373     libopus
1374     libpulse
1375     libquvi
1376     librtmp
1377     libschroedinger
1378     libshine
1379     libsmbclient
1380     libsoxr
1381     libspeex
1382     libssh
1383     libstagefright_h264
1384     libtheora
1385     libtwolame
1386     libutvideo
1387     libv4l2
1388     libvidstab
1389     libvo_aacenc
1390     libvo_amrwbenc
1391     libvorbis
1392     libvpx
1393     libwavpack
1394     libwebp
1395     libx264
1396     libx265
1397     libxavs
1398     libxcb
1399     libxcb_shm
1400     libxcb_shape
1401     libxcb_xfixes
1402     libxvid
1403     libzmq
1404     libzvbi
1405     lzma
1406     nvenc
1407     openal
1408     opencl
1409     opengl
1410     openssl
1411     sdl
1412     x11grab
1413     xlib
1414     zlib
1415 "
1416
1417 DOCUMENT_LIST="
1418     doc
1419     htmlpages
1420     manpages
1421     podpages
1422     txtpages
1423 "
1424
1425 FEATURE_LIST="
1426     ftrapv
1427     gray
1428     hardcoded_tables
1429     runtime_cpudetect
1430     safe_bitstream_reader
1431     shared
1432     small
1433     static
1434     swscale_alpha
1435 "
1436
1437 HWACCEL_LIST="
1438     dxva2
1439     vaapi
1440     vda
1441     vdpau
1442     xvmc
1443 "
1444
1445 LIBRARY_LIST="
1446     avcodec
1447     avdevice
1448     avfilter
1449     avformat
1450     avresample
1451     avutil
1452     postproc
1453     swresample
1454     swscale
1455 "
1456
1457 LICENSE_LIST="
1458     gpl
1459     nonfree
1460     version3
1461 "
1462
1463 PROGRAM_LIST="
1464     ffplay
1465     ffprobe
1466     ffserver
1467     ffmpeg
1468 "
1469
1470 SUBSYSTEM_LIST="
1471     dct
1472     dwt
1473     error_resilience
1474     faan
1475     fast_unaligned
1476     fft
1477     lsp
1478     lzo
1479     mdct
1480     pixelutils
1481     network
1482     rdft
1483 "
1484
1485 CONFIG_LIST="
1486     $COMPONENT_LIST
1487     $DOCUMENT_LIST
1488     $EXAMPLE_LIST
1489     $EXTERNAL_LIBRARY_LIST
1490     $FEATURE_LIST
1491     $HWACCEL_LIST
1492     $LICENSE_LIST
1493     $LIBRARY_LIST
1494     $PROGRAM_LIST
1495     $SUBSYSTEM_LIST
1496     fontconfig
1497     incompatible_libav_abi
1498     memalign_hack
1499     memory_poisoning
1500     neon_clobber_test
1501     pic
1502     pod2man
1503     raise_major
1504     thumb
1505     xmm_clobber_test
1506 "
1507
1508 THREADS_LIST="
1509     pthreads
1510     os2threads
1511     w32threads
1512 "
1513
1514 ATOMICS_LIST="
1515     atomics_gcc
1516     atomics_suncc
1517     atomics_win32
1518 "
1519
1520 ARCH_LIST="
1521     aarch64
1522     alpha
1523     arm
1524     avr32
1525     avr32_ap
1526     avr32_uc
1527     bfin
1528     ia64
1529     m68k
1530     mips
1531     mips64
1532     parisc
1533     ppc
1534     ppc64
1535     s390
1536     sh4
1537     sparc
1538     sparc64
1539     tilegx
1540     tilepro
1541     tomi
1542     x86
1543     x86_32
1544     x86_64
1545 "
1546
1547 ARCH_EXT_LIST_ARM="
1548     armv5te
1549     armv6
1550     armv6t2
1551     armv8
1552     neon
1553     vfp
1554     vfpv3
1555     setend
1556 "
1557
1558 ARCH_EXT_LIST_MIPS="
1559     mipsfpu
1560     mips32r2
1561     mipsdspr1
1562     mipsdspr2
1563 "
1564
1565 ARCH_EXT_LIST_X86_SIMD="
1566     amd3dnow
1567     amd3dnowext
1568     avx
1569     avx2
1570     fma3
1571     fma4
1572     mmx
1573     mmxext
1574     sse
1575     sse2
1576     sse3
1577     sse4
1578     sse42
1579     ssse3
1580     xop
1581 "
1582
1583 ARCH_EXT_LIST_PPC="
1584     altivec
1585     dcbzl
1586     ldbrx
1587     ppc4xx
1588     vsx
1589 "
1590
1591 ARCH_EXT_LIST_X86="
1592     $ARCH_EXT_LIST_X86_SIMD
1593     cpunop
1594     i686
1595 "
1596
1597 ARCH_EXT_LIST="
1598     $ARCH_EXT_LIST_ARM
1599     $ARCH_EXT_LIST_PPC
1600     $ARCH_EXT_LIST_X86
1601     $ARCH_EXT_LIST_MIPS
1602     loongson
1603 "
1604
1605 ARCH_FEATURES="
1606     aligned_stack
1607     fast_64bit
1608     fast_clz
1609     fast_cmov
1610     local_aligned_8
1611     local_aligned_16
1612     local_aligned_32
1613     simd_align_16
1614 "
1615
1616 BUILTIN_LIST="
1617     atomic_cas_ptr
1618     atomic_compare_exchange
1619     machine_rw_barrier
1620     MemoryBarrier
1621     mm_empty
1622     rdtsc
1623     sarestart
1624     sync_val_compare_and_swap
1625 "
1626 HAVE_LIST_CMDLINE="
1627     inline_asm
1628     symver
1629     yasm
1630 "
1631
1632 HAVE_LIST_PUB="
1633     bigendian
1634     fast_unaligned
1635     incompatible_libav_abi
1636 "
1637
1638 HEADERS_LIST="
1639     alsa_asoundlib_h
1640     altivec_h
1641     arpa_inet_h
1642     asm_types_h
1643     cdio_paranoia_h
1644     cdio_paranoia_paranoia_h
1645     dev_bktr_ioctl_bt848_h
1646     dev_bktr_ioctl_meteor_h
1647     dev_ic_bt8xx_h
1648     dev_video_bktr_ioctl_bt848_h
1649     dev_video_meteor_ioctl_meteor_h
1650     direct_h
1651     dlfcn_h
1652     dxva_h
1653     ES2_gl_h
1654     gsm_h
1655     io_h
1656     mach_mach_time_h
1657     machine_ioctl_bt848_h
1658     machine_ioctl_meteor_h
1659     malloc_h
1660     openjpeg_1_5_openjpeg_h
1661     OpenGL_gl3_h
1662     poll_h
1663     sndio_h
1664     soundcard_h
1665     sys_mman_h
1666     sys_param_h
1667     sys_resource_h
1668     sys_select_h
1669     sys_soundcard_h
1670     sys_time_h
1671     sys_un_h
1672     sys_videoio_h
1673     termios_h
1674     udplite_h
1675     unistd_h
1676     windows_h
1677     winsock2_h
1678 "
1679
1680 INTRINSICS_LIST="
1681     intrinsics_neon
1682 "
1683
1684 MATH_FUNCS="
1685     atanf
1686     atan2f
1687     cbrt
1688     cbrtf
1689     cosf
1690     exp2
1691     exp2f
1692     expf
1693     isinf
1694     isnan
1695     ldexpf
1696     llrint
1697     llrintf
1698     log2
1699     log2f
1700     log10f
1701     lrint
1702     lrintf
1703     powf
1704     rint
1705     round
1706     roundf
1707     sinf
1708     trunc
1709     truncf
1710 "
1711
1712 SYSTEM_FUNCS="
1713     access
1714     aligned_malloc
1715     clock_gettime
1716     closesocket
1717     CommandLineToArgvW
1718     CoTaskMemFree
1719     CryptGenRandom
1720     dlopen
1721     fcntl
1722     flt_lim
1723     fork
1724     getaddrinfo
1725     gethrtime
1726     getopt
1727     GetProcessAffinityMask
1728     GetProcessMemoryInfo
1729     GetProcessTimes
1730     getrusage
1731     getservbyport
1732     GetSystemTimeAsFileTime
1733     gettimeofday
1734     glob
1735     glXGetProcAddress
1736     gmtime_r
1737     inet_aton
1738     isatty
1739     jack_port_get_latency_range
1740     kbhit
1741     localtime_r
1742     lzo1x_999_compress
1743     mach_absolute_time
1744     MapViewOfFile
1745     memalign
1746     mkstemp
1747     mmap
1748     mprotect
1749     nanosleep
1750     PeekNamedPipe
1751     posix_memalign
1752     pthread_cancel
1753     sched_getaffinity
1754     SetConsoleTextAttribute
1755     setmode
1756     setrlimit
1757     Sleep
1758     strerror_r
1759     sysconf
1760     sysctl
1761     usleep
1762     VirtualAlloc
1763     wglGetProcAddress
1764 "
1765
1766 TOOLCHAIN_FEATURES="
1767     as_dn_directive
1768     as_func
1769     asm_mod_q
1770     attribute_may_alias
1771     attribute_packed
1772     ebp_available
1773     ebx_available
1774     gnu_as
1775     gnu_windres
1776     ibm_asm
1777     inline_asm_labels
1778     inline_asm_nonlocal_labels
1779     inline_asm_direct_symbol_refs
1780     pragma_deprecated
1781     rsync_contimeout
1782     symver_asm_label
1783     symver_gnu_asm
1784     vfp_args
1785     xform_asm
1786     xmm_clobbers
1787 "
1788
1789 TYPES_LIST="
1790     CONDITION_VARIABLE_Ptr
1791     DXVA_PicParams_HEVC
1792     socklen_t
1793     struct_addrinfo
1794     struct_group_source_req
1795     struct_ip_mreq_source
1796     struct_ipv6_mreq
1797     struct_pollfd
1798     struct_rusage_ru_maxrss
1799     struct_sctp_event_subscribe
1800     struct_sockaddr_in6
1801     struct_sockaddr_sa_len
1802     struct_sockaddr_storage
1803     struct_stat_st_mtim_tv_nsec
1804     struct_v4l2_frmivalenum_discrete
1805 "
1806
1807 HAVE_LIST="
1808     $ARCH_EXT_LIST
1809     $(add_suffix _external $ARCH_EXT_LIST)
1810     $(add_suffix _inline   $ARCH_EXT_LIST)
1811     $ARCH_FEATURES
1812     $ATOMICS_LIST
1813     $BUILTIN_LIST
1814     $HAVE_LIST_CMDLINE
1815     $HAVE_LIST_PUB
1816     $HEADERS_LIST
1817     $INTRINSICS_LIST
1818     $MATH_FUNCS
1819     $SYSTEM_FUNCS
1820     $THREADS_LIST
1821     $TOOLCHAIN_FEATURES
1822     $TYPES_LIST
1823     atomics_native
1824     dos_paths
1825     dxva2api_cobj
1826     dxva2_lib
1827     libc_msvcrt
1828     libdc1394_1
1829     libdc1394_2
1830     makeinfo
1831     makeinfo_html
1832     perl
1833     pod2man
1834     sdl
1835     section_data_rel_ro
1836     texi2html
1837     threads
1838     vdpau_x11
1839     xlib
1840 "
1841
1842 # options emitted with CONFIG_ prefix but not available on the command line
1843 CONFIG_EXTRA="
1844     aandcttables
1845     ac3dsp
1846     audio_frame_queue
1847     audiodsp
1848     blockdsp
1849     bswapdsp
1850     cabac
1851     dvprofile
1852     exif
1853     faandct
1854     faanidct
1855     fdctdsp
1856     frame_thread_encoder
1857     gcrypt
1858     golomb
1859     gplv3
1860     h263dsp
1861     h264chroma
1862     h264dsp
1863     h264pred
1864     h264qpel
1865     hpeldsp
1866     huffman
1867     huffyuvdsp
1868     huffyuvencdsp
1869     idctdsp
1870     iirfilter
1871     imdct15
1872     intrax8
1873     lgplv3
1874     llauddsp
1875     llviddsp
1876     lpc
1877     me_cmp
1878     mpeg_er
1879     mpegaudio
1880     mpegaudiodsp
1881     mpegvideo
1882     mpegvideoenc
1883     nettle
1884     pixblockdsp
1885     qpeldsp
1886     rangecoder
1887     riffdec
1888     riffenc
1889     rtpdec
1890     rtpenc_chain
1891     sinewin
1892     startcode
1893     tpeldsp
1894     videodsp
1895     vp3dsp
1896     wma_freqs
1897 "
1898
1899 CMDLINE_SELECT="
1900     $ARCH_EXT_LIST
1901     $CONFIG_LIST
1902     $HAVE_LIST_CMDLINE
1903     $THREADS_LIST
1904     asm
1905     cross_compile
1906     debug
1907     extra_warnings
1908     logging
1909     lto
1910     optimizations
1911     rpath
1912     stripping
1913 "
1914
1915 PATHS_LIST="
1916     bindir
1917     datadir
1918     docdir
1919     incdir
1920     libdir
1921     mandir
1922     prefix
1923     shlibdir
1924 "
1925
1926 CMDLINE_SET="
1927     $PATHS_LIST
1928     ar
1929     arch
1930     as
1931     assert_level
1932     build_suffix
1933     cc
1934     cpu
1935     cross_prefix
1936     cxx
1937     dep_cc
1938     doxygen
1939     extra_version
1940     gas
1941     host_cc
1942     host_cflags
1943     host_ld
1944     host_ldflags
1945     host_libs
1946     host_os
1947     install
1948     ld
1949     logfile
1950     malloc_prefix
1951     nm
1952     optflags
1953     pkg_config
1954     pkg_config_flags
1955     progs_suffix
1956     random_seed
1957     ranlib
1958     samples
1959     strip
1960     sws_max_filter_size
1961     sysinclude
1962     sysroot
1963     target_exec
1964     target_os
1965     target_path
1966     target_samples
1967     tempprefix
1968     toolchain
1969     valgrind
1970     yasmexe
1971 "
1972
1973 CMDLINE_APPEND="
1974     extra_cflags
1975     extra_cxxflags
1976     host_cppflags
1977 "
1978
1979 # code dependency declarations
1980
1981 # architecture extensions
1982
1983 armv5te_deps="arm"
1984 armv6_deps="arm"
1985 armv6t2_deps="arm"
1986 armv8_deps="aarch64"
1987 neon_deps_any="aarch64 arm"
1988 intrinsics_neon_deps="neon"
1989 vfp_deps_any="aarch64 arm"
1990 vfpv3_deps="vfp"
1991 setend_deps="arm"
1992
1993 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1994
1995 mipsfpu_deps="mips"
1996 mips32r2_deps="mips"
1997 mipsdspr1_deps="mips"
1998 mipsdspr2_deps="mips"
1999
2000 altivec_deps="ppc"
2001 ppc4xx_deps="ppc"
2002 vsx_deps="ppc"
2003
2004 cpunop_deps="i686"
2005 x86_64_select="i686"
2006 x86_64_suggest="fast_cmov"
2007
2008 amd3dnow_deps="mmx"
2009 amd3dnowext_deps="amd3dnow"
2010 i686_deps="x86"
2011 mmx_deps="x86"
2012 mmxext_deps="mmx"
2013 sse_deps="mmxext"
2014 sse2_deps="sse"
2015 sse3_deps="sse2"
2016 ssse3_deps="sse3"
2017 sse4_deps="ssse3"
2018 sse42_deps="sse4"
2019 avx_deps="sse42"
2020 xop_deps="avx"
2021 fma3_deps="avx"
2022 fma4_deps="avx"
2023 avx2_deps="avx"
2024
2025 mmx_external_deps="yasm"
2026 mmx_inline_deps="inline_asm"
2027 mmx_suggest="mmx_external mmx_inline"
2028
2029 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2030     eval dep=\$${ext}_deps
2031     eval ${ext}_external_deps='"${dep}_external"'
2032     eval ${ext}_inline_deps='"${dep}_inline"'
2033     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2034 done
2035
2036 aligned_stack_if_any="aarch64 ppc x86"
2037 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2038 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2039 fast_unaligned_if_any="aarch64 ppc x86"
2040 simd_align_16_if_any="altivec neon sse"
2041
2042 # system capabilities
2043
2044 symver_if_any="symver_asm_label symver_gnu_asm"
2045
2046 # threading support
2047 atomics_gcc_if_any="sync_val_compare_and_swap atomic_compare_exchange"
2048 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2049 atomics_win32_if="MemoryBarrier"
2050 atomics_native_if_any="$ATOMICS_LIST"
2051 w32threads_deps="atomics_native"
2052 threads_if_any="$THREADS_LIST"
2053
2054 # subsystems
2055 dct_select="rdft"
2056 error_resilience_select="me_cmp"
2057 faandct_deps="faan fdctdsp"
2058 faanidct_deps="faan idctdsp"
2059 frame_thread_encoder_deps="encoders threads"
2060 intrax8_select="error_resilience"
2061 mdct_select="fft"
2062 rdft_select="fft"
2063 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2064 mpeg_er_select="error_resilience"
2065 mpegaudio_select="mpegaudiodsp"
2066 mpegaudiodsp_select="dct"
2067 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp videodsp"
2068 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
2069
2070 # decoders / encoders
2071 aac_decoder_select="imdct15 mdct sinewin"
2072 aac_encoder_select="audio_frame_queue iirfilter mdct sinewin"
2073 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2074 ac3_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2075 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2076 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2077 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2078 aic_decoder_select="golomb idctdsp"
2079 alac_encoder_select="lpc"
2080 als_decoder_select="bswapdsp"
2081 amrnb_decoder_select="lsp"
2082 amrwb_decoder_select="lsp"
2083 amv_decoder_select="sp5x_decoder exif"
2084 amv_encoder_select="aandcttables mpegvideoenc"
2085 ape_decoder_select="bswapdsp llauddsp"
2086 apng_decoder_select="zlib"
2087 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2088 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2089 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2090 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2091 atrac1_decoder_select="mdct sinewin"
2092 atrac3_decoder_select="mdct"
2093 atrac3p_decoder_select="mdct sinewin"
2094 avrn_decoder_select="exif"
2095 bink_decoder_select="blockdsp hpeldsp"
2096 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2097 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2098 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2099 cllc_decoder_select="bswapdsp"
2100 comfortnoise_encoder_select="lpc"
2101 cook_decoder_select="audiodsp mdct sinewin"
2102 cscd_decoder_select="lzo"
2103 cscd_decoder_suggest="zlib"
2104 dca_decoder_select="mdct"
2105 dirac_decoder_select="dwt golomb videodsp mpegvideoenc"
2106 dnxhd_decoder_select="blockdsp idctdsp"
2107 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2108 dvvideo_decoder_select="dvprofile idctdsp"
2109 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2110 dxa_decoder_select="zlib"
2111 eac3_decoder_select="ac3_decoder"
2112 eac3_encoder_select="ac3_encoder"
2113 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2114 eatgq_decoder_select="aandcttables"
2115 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpeg1video_decoder"
2116 exr_decoder_select="zlib"
2117 ffv1_decoder_select="golomb rangecoder"
2118 ffv1_encoder_select="rangecoder"
2119 ffvhuff_decoder_select="huffyuv_decoder"
2120 ffvhuff_encoder_select="huffyuv_encoder"
2121 fic_decoder_select="golomb"
2122 flac_decoder_select="golomb"
2123 flac_encoder_select="bswapdsp golomb lpc"
2124 flashsv_decoder_select="zlib"
2125 flashsv_encoder_select="zlib"
2126 flashsv2_encoder_select="zlib"
2127 flashsv2_decoder_select="zlib"
2128 flv_decoder_select="h263_decoder"
2129 flv_encoder_select="h263_encoder"
2130 fourxm_decoder_select="blockdsp bswapdsp"
2131 fraps_decoder_select="bswapdsp huffman"
2132 g2m_decoder_select="blockdsp idctdsp zlib"
2133 g729_decoder_select="audiodsp"
2134 h261_decoder_select="mpeg_er mpegvideo"
2135 h261_encoder_select="aandcttables mpegvideoenc"
2136 h263_decoder_select="error_resilience h263_parser h263dsp mpeg_er mpegvideo qpeldsp"
2137 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2138 h263i_decoder_select="h263_decoder"
2139 h263p_encoder_select="h263_encoder"
2140 h264_decoder_select="cabac golomb h264chroma h264dsp h264pred h264qpel startcode videodsp"
2141 h264_decoder_suggest="error_resilience"
2142 hevc_decoder_select="bswapdsp cabac golomb videodsp"
2143 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2144 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llviddsp"
2145 iac_decoder_select="imc_decoder"
2146 imc_decoder_select="bswapdsp fft mdct sinewin"
2147 indeo3_decoder_select="hpeldsp"
2148 interplay_video_decoder_select="hpeldsp"
2149 jpegls_decoder_select="golomb mjpeg_decoder"
2150 jpegls_encoder_select="golomb"
2151 jv_decoder_select="blockdsp"
2152 lagarith_decoder_select="huffyuvdsp"
2153 ljpeg_encoder_select="aandcttables idctdsp"
2154 loco_decoder_select="golomb"
2155 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2156 metasound_decoder_select="lsp mdct sinewin"
2157 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2158 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp"
2159 mjpeg_encoder_select="aandcttables mpegvideoenc"
2160 mjpegb_decoder_select="mjpeg_decoder"
2161 mlp_decoder_select="mlp_parser"
2162 motionpixels_decoder_select="bswapdsp"
2163 mp1_decoder_select="mpegaudio"
2164 mp1float_decoder_select="mpegaudio"
2165 mp2_decoder_select="mpegaudio"
2166 mp2float_decoder_select="mpegaudio"
2167 mp3_decoder_select="mpegaudio"
2168 mp3adu_decoder_select="mpegaudio"
2169 mp3adufloat_decoder_select="mpegaudio"
2170 mp3float_decoder_select="mpegaudio"
2171 mp3on4_decoder_select="mpegaudio"
2172 mp3on4float_decoder_select="mpegaudio"
2173 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2174 mpc8_decoder_select="mpegaudiodsp"
2175 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
2176 mpeg_xvmc_decoder_select="mpeg2video_decoder"
2177 mpegvideo_decoder_select="error_resilience mpeg_er mpegvideo"
2178 mpeg1video_decoder_select="error_resilience mpeg_er mpegvideo"
2179 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2180 mpeg2video_decoder_select="error_resilience mpeg_er mpegvideo"
2181 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2182 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2183 mpeg4_encoder_select="h263_encoder"
2184 msmpeg4v1_decoder_select="h263_decoder"
2185 msmpeg4v2_decoder_select="h263_decoder"
2186 msmpeg4v2_encoder_select="h263_encoder"
2187 msmpeg4v3_decoder_select="h263_decoder"
2188 msmpeg4v3_encoder_select="h263_encoder"
2189 mss2_decoder_select="error_resilience mpeg_er qpeldsp vc1_decoder"
2190 mxpeg_decoder_select="mjpeg_decoder"
2191 nellymoser_decoder_select="mdct sinewin"
2192 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2193 nuv_decoder_select="idctdsp lzo"
2194 on2avc_decoder_select="mdct"
2195 opus_decoder_deps="swresample"
2196 opus_decoder_select="imdct15"
2197 png_decoder_select="zlib"
2198 png_encoder_select="huffyuvencdsp zlib"
2199 prores_decoder_select="blockdsp idctdsp"
2200 prores_encoder_select="fdctdsp"
2201 qcelp_decoder_select="lsp"
2202 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2203 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2204 ra_144_decoder_select="audiodsp"
2205 ralf_decoder_select="golomb"
2206 rawvideo_decoder_select="bswapdsp"
2207 rtjpeg_decoder_select="me_cmp"
2208 rv10_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2209 rv10_encoder_select="h263_encoder"
2210 rv20_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2211 rv20_encoder_select="h263_encoder"
2212 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo videodsp"
2213 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo videodsp"
2214 shorten_decoder_select="golomb"
2215 sipr_decoder_select="lsp"
2216 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2217 snow_encoder_select="aandcttables dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2218 sonic_decoder_select="golomb rangecoder"
2219 sonic_encoder_select="golomb rangecoder"
2220 sonic_ls_encoder_select="golomb rangecoder"
2221 sp5x_decoder_select="mjpeg_decoder"
2222 svq1_decoder_select="hpeldsp"
2223 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2224 svq3_decoder_select="h264_decoder hpeldsp tpeldsp"
2225 svq3_decoder_suggest="zlib"
2226 tak_decoder_select="audiodsp"
2227 theora_decoder_select="vp3_decoder"
2228 thp_decoder_select="mjpeg_decoder"
2229 tiff_decoder_suggest="zlib lzma"
2230 tiff_encoder_suggest="zlib"
2231 truehd_decoder_select="mlp_parser"
2232 truemotion2_decoder_select="bswapdsp"
2233 truespeech_decoder_select="bswapdsp"
2234 tscc_decoder_select="zlib"
2235 twinvq_decoder_select="mdct lsp sinewin"
2236 utvideo_decoder_select="bswapdsp"
2237 utvideo_encoder_select="bswapdsp huffman huffyuvencdsp"
2238 vble_decoder_select="huffyuvdsp"
2239 vc1_decoder_select="blockdsp error_resilience h263_decoder h264chroma h264qpel intrax8 mpeg_er qpeldsp startcode"
2240 vc1image_decoder_select="vc1_decoder"
2241 vorbis_decoder_select="mdct"
2242 vorbis_encoder_select="mdct"
2243 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2244 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp"
2245 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp"
2246 vp6a_decoder_select="vp6_decoder"
2247 vp6f_decoder_select="vp6_decoder"
2248 vp7_decoder_select="h264pred videodsp"
2249 vp8_decoder_select="h264pred videodsp"
2250 vp9_decoder_select="videodsp vp9_parser"
2251 webp_decoder_select="vp8_decoder"
2252 wmalossless_decoder_select="llauddsp"
2253 wmapro_decoder_select="mdct sinewin wma_freqs"
2254 wmav1_decoder_select="mdct sinewin wma_freqs"
2255 wmav1_encoder_select="mdct sinewin wma_freqs"
2256 wmav2_decoder_select="mdct sinewin wma_freqs"
2257 wmav2_encoder_select="mdct sinewin wma_freqs"
2258 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2259 wmv1_decoder_select="h263_decoder"
2260 wmv1_encoder_select="h263_encoder"
2261 wmv2_decoder_select="blockdsp h263_decoder idctdsp intrax8 videodsp"
2262 wmv2_encoder_select="h263_encoder"
2263 wmv3_decoder_select="vc1_decoder"
2264 wmv3image_decoder_select="wmv3_decoder"
2265 zerocodec_decoder_select="zlib"
2266 zlib_decoder_select="zlib"
2267 zlib_encoder_select="zlib"
2268 zmbv_decoder_select="zlib"
2269 zmbv_encoder_select="zlib"
2270
2271 # hardware accelerators
2272 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2273 dxva2_deps="dxva2api_h"
2274 vaapi_deps="va_va_h"
2275 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
2276 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
2277 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
2278 xvmc_deps="X11_extensions_XvMClib_h"
2279
2280 h263_vaapi_hwaccel_deps="vaapi"
2281 h263_vaapi_hwaccel_select="h263_decoder"
2282 h263_vdpau_hwaccel_deps="vdpau"
2283 h263_vdpau_hwaccel_select="h263_decoder"
2284 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2285 h264_dxva2_hwaccel_deps="dxva2"
2286 h264_dxva2_hwaccel_select="h264_decoder"
2287 h264_vaapi_hwaccel_deps="vaapi"
2288 h264_vaapi_hwaccel_select="h264_decoder"
2289 h264_vda_decoder_deps="vda"
2290 h264_vda_decoder_select="h264_decoder"
2291 h264_vda_hwaccel_deps="vda"
2292 h264_vda_hwaccel_select="h264_decoder"
2293 h264_vda_old_hwaccel_deps="vda"
2294 h264_vda_old_hwaccel_select="h264_decoder"
2295 h264_vdpau_decoder_deps="vdpau"
2296 h264_vdpau_decoder_select="h264_decoder"
2297 h264_vdpau_hwaccel_deps="vdpau"
2298 h264_vdpau_hwaccel_select="h264_decoder"
2299 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2300 hevc_dxva2_hwaccel_select="hevc_decoder"
2301 mpeg_vdpau_decoder_deps="vdpau"
2302 mpeg_vdpau_decoder_select="mpeg2video_decoder"
2303 mpeg_xvmc_hwaccel_deps="xvmc"
2304 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2305 mpeg1_vdpau_decoder_deps="vdpau"
2306 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
2307 mpeg1_vdpau_hwaccel_deps="vdpau"
2308 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2309 mpeg1_xvmc_hwaccel_deps="xvmc"
2310 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2311 mpeg2_crystalhd_decoder_select="crystalhd"
2312 mpeg2_dxva2_hwaccel_deps="dxva2"
2313 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2314 mpeg2_vaapi_hwaccel_deps="vaapi"
2315 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2316 mpeg2_vdpau_hwaccel_deps="vdpau"
2317 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2318 mpeg2_xvmc_hwaccel_deps="xvmc"
2319 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2320 mpeg4_crystalhd_decoder_select="crystalhd"
2321 mpeg4_vaapi_hwaccel_deps="vaapi"
2322 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2323 mpeg4_vdpau_decoder_deps="vdpau"
2324 mpeg4_vdpau_decoder_select="mpeg4_decoder"
2325 mpeg4_vdpau_hwaccel_deps="vdpau"
2326 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2327 msmpeg4_crystalhd_decoder_select="crystalhd"
2328 vc1_crystalhd_decoder_select="crystalhd"
2329 vc1_dxva2_hwaccel_deps="dxva2"
2330 vc1_dxva2_hwaccel_select="vc1_decoder"
2331 vc1_vaapi_hwaccel_deps="vaapi"
2332 vc1_vaapi_hwaccel_select="vc1_decoder"
2333 vc1_vdpau_decoder_deps="vdpau"
2334 vc1_vdpau_decoder_select="vc1_decoder"
2335 vc1_vdpau_hwaccel_deps="vdpau"
2336 vc1_vdpau_hwaccel_select="vc1_decoder"
2337 wmv3_crystalhd_decoder_select="crystalhd"
2338 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2339 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2340 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
2341 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2342
2343 # parsers
2344 h264_parser_select="h264_decoder"
2345 hevc_parser_select="hevc_decoder"
2346 mpegvideo_parser_select="mpegvideo"
2347 mpeg4video_parser_select="error_resilience h263dsp mpeg_er mpegvideo qpeldsp"
2348 vc1_parser_select="mpegvideo startcode vc1_decoder"
2349
2350 # external libraries
2351 libaacplus_encoder_deps="libaacplus"
2352 libcelt_decoder_deps="libcelt"
2353 libfaac_encoder_deps="libfaac"
2354 libfaac_encoder_select="audio_frame_queue"
2355 libfdk_aac_decoder_deps="libfdk_aac"
2356 libfdk_aac_encoder_deps="libfdk_aac"
2357 libfdk_aac_encoder_select="audio_frame_queue"
2358 libgme_demuxer_deps="libgme"
2359 libgsm_decoder_deps="libgsm"
2360 libgsm_encoder_deps="libgsm"
2361 libgsm_ms_decoder_deps="libgsm"
2362 libgsm_ms_encoder_deps="libgsm"
2363 libilbc_decoder_deps="libilbc"
2364 libilbc_encoder_deps="libilbc"
2365 libmodplug_demuxer_deps="libmodplug"
2366 libmp3lame_encoder_deps="libmp3lame"
2367 libmp3lame_encoder_select="audio_frame_queue"
2368 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2369 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2370 libopencore_amrnb_encoder_select="audio_frame_queue"
2371 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2372 libopenh264_encoder_deps="libopenh264"
2373 libopenjpeg_decoder_deps="libopenjpeg"
2374 libopenjpeg_encoder_deps="libopenjpeg"
2375 libopus_decoder_deps="libopus"
2376 libopus_encoder_deps="libopus"
2377 libopus_encoder_select="audio_frame_queue"
2378 libquvi_demuxer_deps="libquvi"
2379 libschroedinger_decoder_deps="libschroedinger"
2380 libschroedinger_encoder_deps="libschroedinger"
2381 libshine_encoder_deps="libshine"
2382 libshine_encoder_select="audio_frame_queue"
2383 libspeex_decoder_deps="libspeex"
2384 libspeex_encoder_deps="libspeex"
2385 libspeex_encoder_select="audio_frame_queue"
2386 libstagefright_h264_decoder_deps="libstagefright_h264"
2387 libtheora_encoder_deps="libtheora"
2388 libtwolame_encoder_deps="libtwolame"
2389 libvo_aacenc_encoder_deps="libvo_aacenc"
2390 libvo_aacenc_encoder_select="audio_frame_queue"
2391 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2392 libvorbis_decoder_deps="libvorbis"
2393 libvorbis_encoder_deps="libvorbis"
2394 libvorbis_encoder_select="audio_frame_queue"
2395 libvpx_vp8_decoder_deps="libvpx"
2396 libvpx_vp8_encoder_deps="libvpx"
2397 libvpx_vp9_decoder_deps="libvpx"
2398 libvpx_vp9_encoder_deps="libvpx"
2399 libwavpack_encoder_deps="libwavpack"
2400 libwebp_encoder_deps="libwebp"
2401 libx264_encoder_deps="libx264"
2402 libx264rgb_encoder_deps="libx264"
2403 libx264rgb_encoder_select="libx264_encoder"
2404 libx265_encoder_deps="libx265"
2405 libxavs_encoder_deps="libxavs"
2406 libxvid_encoder_deps="libxvid"
2407 libutvideo_decoder_deps="libutvideo"
2408 libutvideo_encoder_deps="libutvideo"
2409 libzvbi_teletext_decoder_deps="libzvbi"
2410 nvenc_encoder_deps="nvenc"
2411
2412 # demuxers / muxers
2413 ac3_demuxer_select="ac3_parser"
2414 asf_demuxer_select="riffdec"
2415 asf_muxer_select="riffenc"
2416 asf_stream_muxer_select="asf_muxer"
2417 avi_demuxer_select="riffdec exif"
2418 avi_muxer_select="riffenc"
2419 avisynth_demuxer_deps="avisynth"
2420 avisynth_demuxer_select="riffdec"
2421 caf_demuxer_select="riffdec"
2422 dash_muxer_select="mp4_muxer"
2423 dirac_demuxer_select="dirac_parser"
2424 dts_demuxer_select="dca_parser"
2425 dtshd_demuxer_select="dca_parser"
2426 dv_demuxer_select="dvprofile"
2427 dv_muxer_select="dvprofile"
2428 dxa_demuxer_select="riffdec"
2429 eac3_demuxer_select="ac3_parser"
2430 f4v_muxer_select="mov_muxer"
2431 flac_demuxer_select="flac_parser"
2432 hds_muxer_select="flv_muxer"
2433 hls_muxer_select="mpegts_muxer"
2434 image2_alias_pix_demuxer_select="image2_demuxer"
2435 image2_brender_pix_demuxer_select="image2_demuxer"
2436 ipod_muxer_select="mov_muxer"
2437 ismv_muxer_select="mov_muxer"
2438 libnut_demuxer_deps="libnut"
2439 libnut_muxer_deps="libnut"
2440 matroska_audio_muxer_select="matroska_muxer"
2441 matroska_demuxer_select="riffdec"
2442 matroska_demuxer_suggest="bzlib lzo zlib"
2443 matroska_muxer_select="riffenc"
2444 mmf_muxer_select="riffenc"
2445 mov_demuxer_select="riffdec"
2446 mov_demuxer_suggest="zlib"
2447 mov_muxer_select="riffenc rtpenc_chain"
2448 mp3_demuxer_select="mpegaudio_parser"
2449 mp4_muxer_select="mov_muxer"
2450 mpegts_muxer_select="adts_muxer latm_muxer"
2451 mpegtsraw_demuxer_select="mpegts_demuxer"
2452 mxf_d10_muxer_select="mxf_muxer"
2453 mxf_opatom_muxer_select="mxf_muxer"
2454 nut_muxer_select="riffenc"
2455 nuv_demuxer_select="riffdec"
2456 oga_muxer_select="ogg_muxer"
2457 ogg_demuxer_select="golomb"
2458 opus_muxer_select="ogg_muxer"
2459 psp_muxer_select="mov_muxer"
2460 rtp_demuxer_select="sdp_demuxer"
2461 rtpdec_select="asf_demuxer rm_demuxer rtp_protocol mpegts_demuxer mov_demuxer"
2462 rtsp_demuxer_select="http_protocol rtpdec"
2463 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2464 sap_demuxer_select="sdp_demuxer"
2465 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2466 sdp_demuxer_select="rtpdec"
2467 smoothstreaming_muxer_select="ismv_muxer"
2468 spdif_muxer_select="aac_parser"
2469 spx_muxer_select="ogg_muxer"
2470 tak_demuxer_select="tak_parser"
2471 tg2_muxer_select="mov_muxer"
2472 tgp_muxer_select="mov_muxer"
2473 vobsub_demuxer_select="mpegps_demuxer"
2474 w64_demuxer_select="wav_demuxer"
2475 w64_muxer_select="wav_muxer"
2476 wav_demuxer_select="riffdec"
2477 wav_muxer_select="riffenc"
2478 webm_muxer_select="riffenc"
2479 wtv_demuxer_select="riffdec"
2480 wtv_muxer_select="riffenc"
2481 xmv_demuxer_select="riffdec"
2482 xwma_demuxer_select="riffdec"
2483
2484 # indevs / outdevs
2485 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2486 alsa_outdev_deps="alsa_asoundlib_h"
2487 avfoundation_indev_extralibs="-framework CoreVideo -framework Foundation -framework AVFoundation -framework CoreMedia -framework CoreGraphics"
2488 avfoundation_indev_select="avfoundation"
2489 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2490 caca_outdev_deps="libcaca"
2491 decklink_outdev_deps="decklink pthreads"
2492 decklink_outdev_extralibs="-lstdc++"
2493 decklink_indev_deps="decklink pthreads"
2494 decklink_indev_extralibs="-lstdc++"
2495 dshow_indev_deps="IBaseFilter"
2496 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32"
2497 dv1394_indev_deps="dv1394"
2498 dv1394_indev_select="dv_demuxer"
2499 fbdev_indev_deps="linux_fb_h"
2500 fbdev_outdev_deps="linux_fb_h"
2501 gdigrab_indev_deps="CreateDIBSection"
2502 gdigrab_indev_extralibs="-lgdi32"
2503 gdigrab_indev_select="bmp_decoder"
2504 iec61883_indev_deps="libiec61883"
2505 jack_indev_deps="jack_jack_h sem_timedwait"
2506 lavfi_indev_deps="avfilter"
2507 libcdio_indev_deps="libcdio"
2508 libdc1394_indev_deps="libdc1394"
2509 libv4l2_indev_deps="libv4l2"
2510 openal_indev_deps="openal"
2511 opengl_outdev_deps="opengl"
2512 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2513 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2514 pulse_indev_deps="libpulse"
2515 pulse_outdev_deps="libpulse"
2516 qtkit_indev_extralibs="-framework QTKit -framework Foundation -framework QuartzCore"
2517 qtkit_indev_select="qtkit"
2518 sdl_outdev_deps="sdl"
2519 sndio_indev_deps="sndio_h"
2520 sndio_outdev_deps="sndio_h"
2521 v4l_indev_deps="linux_videodev_h"
2522 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2523 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
2524 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2525 vfwcap_indev_extralibs="-lavicap32"
2526 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
2527 xv_outdev_extralibs="-lXv -lX11 -lXext"
2528 x11grab_indev_deps="x11grab"
2529 x11grab_xcb_indev_deps="libxcb"
2530
2531 # protocols
2532 bluray_protocol_deps="libbluray"
2533 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2534 ffrtmpcrypt_protocol_deps_any="gcrypt nettle openssl"
2535 ffrtmpcrypt_protocol_select="tcp_protocol"
2536 ffrtmphttp_protocol_deps="!librtmp_protocol"
2537 ffrtmphttp_protocol_select="http_protocol"
2538 ftp_protocol_select="tcp_protocol"
2539 gopher_protocol_select="network"
2540 http_protocol_select="tcp_protocol"
2541 httpproxy_protocol_select="tcp_protocol"
2542 https_protocol_select="tls_protocol"
2543 icecast_protocol_select="http_protocol"
2544 librtmp_protocol_deps="librtmp"
2545 librtmpe_protocol_deps="librtmp"
2546 librtmps_protocol_deps="librtmp"
2547 librtmpt_protocol_deps="librtmp"
2548 librtmpte_protocol_deps="librtmp"
2549 libsmbclient_protocol_deps="libsmbclient gplv3"
2550 libssh_protocol_deps="libssh"
2551 mmsh_protocol_select="http_protocol"
2552 mmst_protocol_select="network"
2553 rtmp_protocol_deps="!librtmp_protocol"
2554 rtmp_protocol_select="tcp_protocol"
2555 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2556 rtmps_protocol_deps="!librtmp_protocol"
2557 rtmps_protocol_select="tls_protocol"
2558 rtmpt_protocol_select="ffrtmphttp_protocol"
2559 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2560 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2561 rtp_protocol_select="udp_protocol"
2562 sctp_protocol_deps="struct_sctp_event_subscribe"
2563 sctp_protocol_select="network"
2564 srtp_protocol_select="rtp_protocol"
2565 tcp_protocol_select="network"
2566 tls_protocol_deps_any="openssl gnutls"
2567 tls_protocol_select="tcp_protocol"
2568 udp_protocol_select="network"
2569 udplite_protocol_select="network"
2570 unix_protocol_deps="sys_un_h"
2571 unix_protocol_select="network"
2572
2573 # filters
2574 amovie_filter_deps="avcodec avformat"
2575 aresample_filter_deps="swresample"
2576 ass_filter_deps="libass"
2577 asyncts_filter_deps="avresample"
2578 atempo_filter_deps="avcodec"
2579 atempo_filter_select="rdft"
2580 azmq_filter_deps="libzmq"
2581 blackframe_filter_deps="gpl"
2582 boxblur_filter_deps="gpl"
2583 bs2b_filter_deps="libbs2b"
2584 colormatrix_filter_deps="gpl"
2585 cropdetect_filter_deps="gpl"
2586 delogo_filter_deps="gpl"
2587 deshake_filter_select="pixelutils"
2588 drawtext_filter_deps="libfreetype"
2589 ebur128_filter_deps="gpl"
2590 eq_filter_deps="gpl"
2591 flite_filter_deps="libflite"
2592 frei0r_filter_deps="frei0r dlopen"
2593 frei0r_src_filter_deps="frei0r dlopen"
2594 fspp_filter_deps="gpl"
2595 geq_filter_deps="gpl"
2596 histeq_filter_deps="gpl"
2597 hqdn3d_filter_deps="gpl"
2598 interlace_filter_deps="gpl"
2599 kerndeint_filter_deps="gpl"
2600 ladspa_filter_deps="ladspa dlopen"
2601 mcdeint_filter_deps="avcodec gpl"
2602 movie_filter_deps="avcodec avformat"
2603 mpdecimate_filter_deps="gpl"
2604 mpdecimate_filter_select="pixelutils"
2605 mptestsrc_filter_deps="gpl"
2606 negate_filter_deps="lut_filter"
2607 perspective_filter_deps="gpl"
2608 pp7_filter_deps="gpl"
2609 ocv_filter_deps="libopencv"
2610 owdenoise_filter_deps="gpl"
2611 pan_filter_deps="swresample"
2612 phase_filter_deps="gpl"
2613 pp_filter_deps="gpl postproc"
2614 pullup_filter_deps="gpl"
2615 removelogo_filter_deps="avcodec avformat swscale"
2616 repeatfields_filter_deps="gpl"
2617 resample_filter_deps="avresample"
2618 sab_filter_deps="gpl swscale"
2619 scale_filter_deps="swscale"
2620 select_filter_select="pixelutils"
2621 smartblur_filter_deps="gpl swscale"
2622 showspectrum_filter_deps="avcodec"
2623 showspectrum_filter_select="rdft"
2624 spp_filter_deps="gpl avcodec"
2625 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
2626 stereo3d_filter_deps="gpl"
2627 subtitles_filter_deps="avformat avcodec libass"
2628 super2xsai_filter_deps="gpl"
2629 tinterlace_filter_deps="gpl"
2630 vidstabdetect_filter_deps="libvidstab"
2631 vidstabtransform_filter_deps="libvidstab"
2632 pixfmts_super2xsai_test_deps="super2xsai_filter"
2633 tinterlace_merge_test_deps="tinterlace_filter"
2634 tinterlace_pad_test_deps="tinterlace_filter"
2635 uspp_filter_deps="gpl avcodec"
2636 zmq_filter_deps="libzmq"
2637 zoompan_filter_deps="swscale"
2638
2639 # examples
2640 avio_reading="avformat avcodec avutil"
2641 avcodec_example_deps="avcodec avutil"
2642 decoding_encoding_example_deps="avcodec avformat avutil"
2643 demuxing_decoding_example_deps="avcodec avformat avutil"
2644 extract_mvs_example_deps="avcodec avformat avutil"
2645 filter_audio_example_deps="avfilter avutil"
2646 filtering_audio_example_deps="avfilter avcodec avformat avutil"
2647 filtering_video_example_deps="avfilter avcodec avformat avutil"
2648 metadata_example_deps="avformat avutil"
2649 muxing_example_deps="avcodec avformat avutil swscale"
2650 remuxing_example_deps="avcodec avformat avutil"
2651 resampling_audio_example_deps="avutil swresample"
2652 scaling_video_example_deps="avutil swscale"
2653 transcode_aac_example_deps="avcodec avformat swresample"
2654 transcoding_example_deps="avfilter avcodec avformat avutil"
2655
2656 # libraries, in linking order
2657 avcodec_deps="avutil"
2658 avdevice_deps="avformat avcodec avutil"
2659 avfilter_deps="avutil"
2660 avformat_deps="avcodec avutil"
2661 avresample_deps="avutil"
2662 postproc_deps="avutil gpl"
2663 swresample_deps="avutil"
2664 swscale_deps="avutil"
2665
2666 # programs
2667 ffmpeg_deps="avcodec avfilter avformat swresample"
2668 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
2669                null_filter
2670                setpts_filter trim_filter"
2671 ffplay_deps="avcodec avformat swscale swresample sdl"
2672 ffplay_libs='$sdl_libs'
2673 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
2674 ffprobe_deps="avcodec avformat"
2675 ffserver_deps="avformat fork sarestart"
2676 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
2677
2678 # documentation
2679 podpages_deps="perl"
2680 manpages_deps="perl pod2man"
2681 htmlpages_deps="perl"
2682 htmlpages_deps_any="makeinfo_html texi2html"
2683 txtpages_deps="perl makeinfo"
2684 doc_deps_any="manpages htmlpages podpages txtpages"
2685
2686 # default parameters
2687
2688 logfile="config.log"
2689
2690 # installation paths
2691 prefix_default="/usr/local"
2692 bindir_default='${prefix}/bin'
2693 datadir_default='${prefix}/share/ffmpeg'
2694 docdir_default='${prefix}/share/doc/ffmpeg'
2695 incdir_default='${prefix}/include'
2696 libdir_default='${prefix}/lib'
2697 mandir_default='${prefix}/share/man'
2698
2699 # toolchain
2700 ar_default="ar"
2701 cc_default="gcc"
2702 cxx_default="g++"
2703 host_cc_default="gcc"
2704 cp_f="cp -f"
2705 doxygen_default="doxygen"
2706 install="install"
2707 ln_s="ln -s -f"
2708 nm_default="nm -g"
2709 objformat="elf"
2710 pkg_config_default=pkg-config
2711 if ranlib 2>&1 | grep -q "\-D "; then
2712     ranlib_default="ranlib -D"
2713 else
2714     ranlib_default="ranlib"
2715 fi
2716 strip_default="strip"
2717 yasmexe_default="yasm"
2718 windres_default="windres"
2719
2720 # OS
2721 target_os_default=$(tolower $(uname -s))
2722 host_os=$target_os_default
2723
2724 # machine
2725 if test "$target_os_default" = aix; then
2726     arch_default=$(uname -p)
2727     strip_default="strip -X32_64"
2728 else
2729     arch_default=$(uname -m)
2730 fi
2731 cpu="generic"
2732 intrinsics="none"
2733
2734 # configurable options
2735 enable $PROGRAM_LIST
2736 enable $DOCUMENT_LIST
2737 enable $EXAMPLE_LIST
2738 enable $(filter_out avresample $LIBRARY_LIST)
2739 enable stripping
2740
2741 enable asm
2742 enable debug
2743 enable doc
2744 enable faan faandct faanidct
2745 enable optimizations
2746 enable runtime_cpudetect
2747 enable safe_bitstream_reader
2748 enable static
2749 enable swscale_alpha
2750
2751 sws_max_filter_size_default=256
2752 set_default sws_max_filter_size
2753
2754 # Enable hwaccels by default.
2755 enable dxva2 vaapi vda vdpau xvmc
2756 enable xlib
2757
2758 # build settings
2759 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2760 LIBPREF="lib"
2761 LIBSUF=".a"
2762 FULLNAME='$(NAME)$(BUILDSUF)'
2763 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
2764 SLIBPREF="lib"
2765 SLIBSUF=".so"
2766 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
2767 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2768 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2769 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2770 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2771 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2772
2773 asflags_filter=echo
2774 cflags_filter=echo
2775 ldflags_filter=echo
2776
2777 AS_C='-c'
2778 AS_O='-o $@'
2779 CC_C='-c'
2780 CC_E='-E -o $@'
2781 CC_O='-o $@'
2782 CXX_C='-c'
2783 CXX_O='-o $@'
2784 LD_O='-o $@'
2785 LD_LIB='-l%'
2786 LD_PATH='-L'
2787 HOSTCC_C='-c'
2788 HOSTCC_E='-E -o $@'
2789 HOSTCC_O='-o $@'
2790 HOSTLD_O='-o $@'
2791
2792 host_libs='-lm'
2793 host_cflags_filter=echo
2794 host_ldflags_filter=echo
2795
2796 target_path='$(CURDIR)'
2797
2798 # since the object filename is not given with the -MM flag, the compiler
2799 # is only able to print the basename, and we must add the path ourselves
2800 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2801 DEPFLAGS='-MM'
2802
2803 # find source path
2804 if test -f configure; then
2805     source_path=.
2806 else
2807     source_path=$(cd $(dirname "$0"); pwd)
2808     echo "$source_path" | grep -q '[[:blank:]]' &&
2809         die "Out of tree builds are impossible with whitespace in source path."
2810     test -e "$source_path/config.h" &&
2811         die "Out of tree builds are impossible with config.h in source dir."
2812 fi
2813
2814 for v in "$@"; do
2815     r=${v#*=}
2816     l=${v%"$r"}
2817     r=$(sh_quote "$r")
2818     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
2819 done
2820
2821 find_things(){
2822     thing=$1
2823     pattern=$2
2824     file=$source_path/$3
2825     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2826 }
2827
2828 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2829 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2830 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2831 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2832 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
2833 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2834 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2835 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2836 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2837 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
2838 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2839
2840 ALL_COMPONENTS="
2841     $BSF_LIST
2842     $DECODER_LIST
2843     $DEMUXER_LIST
2844     $ENCODER_LIST
2845     $FILTER_LIST
2846     $HWACCEL_LIST
2847     $INDEV_LIST
2848     $MUXER_LIST
2849     $OUTDEV_LIST
2850     $PARSER_LIST
2851     $PROTOCOL_LIST
2852 "
2853
2854 for n in $COMPONENT_LIST; do
2855     v=$(toupper ${n%s})_LIST
2856     eval enable \$$v
2857     eval ${n}_if_any="\$$v"
2858 done
2859
2860 enable $ARCH_EXT_LIST
2861
2862 die_unknown(){
2863     echo "Unknown option \"$1\"."
2864     echo "See $0 --help for available options."
2865     exit 1
2866 }
2867
2868 print_3_columns() {
2869     cat | tr ' ' '\n' | sort | pr -r -3 -t
2870 }
2871
2872 show_list() {
2873     suffix=_$1
2874     shift
2875     echo $* | sed s/$suffix//g | print_3_columns
2876     exit 0
2877 }
2878
2879 rand_list(){
2880     IFS=', '
2881     set -- $*
2882     unset IFS
2883     for thing; do
2884         comp=${thing%:*}
2885         prob=${thing#$comp}
2886         prob=${prob#:}
2887         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2888         echo "prob ${prob:-0.5}"
2889         printf '%s\n' $comp
2890     done
2891 }
2892
2893 do_random(){
2894     action=$1
2895     shift
2896     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2897     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2898 }
2899
2900 for opt do
2901     optval="${opt#*=}"
2902     case "$opt" in
2903         --extra-ldflags=*)
2904             add_ldflags $optval
2905         ;;
2906         --extra-ldexeflags=*)
2907             add_ldexeflags $optval
2908         ;;
2909         --extra-libs=*)
2910             add_extralibs $optval
2911         ;;
2912         --disable-devices)
2913             disable $INDEV_LIST $OUTDEV_LIST
2914         ;;
2915         --enable-debug=*)
2916             debuglevel="$optval"
2917         ;;
2918         --disable-programs)
2919             disable $PROGRAM_LIST
2920         ;;
2921         --disable-everything)
2922             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2923         ;;
2924         --disable-all)
2925             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2926             disable $LIBRARY_LIST $PROGRAM_LIST doc
2927         ;;
2928         --enable-random|--disable-random)
2929             action=${opt%%-random}
2930             do_random ${action#--} $COMPONENT_LIST
2931         ;;
2932         --enable-random=*|--disable-random=*)
2933             action=${opt%%-random=*}
2934             do_random ${action#--} $optval
2935         ;;
2936         --enable-*=*|--disable-*=*)
2937             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2938             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2939             eval list=\$$(toupper $thing)_LIST
2940             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2941             list=$(filter "$name" $list)
2942             [ "$list" = "" ] && warn "Option $opt did not match anything"
2943             $action $list
2944         ;;
2945         --enable-?*|--disable-?*)
2946             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2947             if is_in $option $COMPONENT_LIST; then
2948                 test $action = disable && action=unset
2949                 eval $action \$$(toupper ${option%s})_LIST
2950             elif is_in $option $CMDLINE_SELECT; then
2951                 $action $option
2952             else
2953                 die_unknown $opt
2954             fi
2955         ;;
2956         --list-*)
2957             NAME="${opt#--list-}"
2958             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2959             NAME=${NAME%s}
2960             eval show_list $NAME \$$(toupper $NAME)_LIST
2961         ;;
2962         --help|-h) show_help
2963         ;;
2964         --fatal-warnings) enable fatal_warnings
2965         ;;
2966         *)
2967             optname="${opt%%=*}"
2968             optname="${optname#--}"
2969             optname=$(echo "$optname" | sed 's/-/_/g')
2970             if is_in $optname $CMDLINE_SET; then
2971                 eval $optname='$optval'
2972             elif is_in $optname $CMDLINE_APPEND; then
2973                 append $optname "$optval"
2974             else
2975                 die_unknown $opt
2976             fi
2977         ;;
2978     esac
2979 done
2980
2981 disabled logging && logfile=/dev/null
2982
2983 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
2984 set >> $logfile
2985
2986 test -n "$cross_prefix" && enable cross_compile
2987
2988 if enabled cross_compile; then
2989     test -n "$arch" && test -n "$target_os" ||
2990         die "Must specify target arch and OS when cross-compiling"
2991 fi
2992
2993 ar_default="${cross_prefix}${ar_default}"
2994 cc_default="${cross_prefix}${cc_default}"
2995 cxx_default="${cross_prefix}${cxx_default}"
2996 nm_default="${cross_prefix}${nm_default}"
2997 pkg_config_default="${cross_prefix}${pkg_config_default}"
2998 ranlib_default="${cross_prefix}${ranlib_default}"
2999 strip_default="${cross_prefix}${strip_default}"
3000 windres_default="${cross_prefix}${windres_default}"
3001
3002 sysinclude_default="${sysroot}/usr/include"
3003
3004 test -n "$valgrind" && toolchain="valgrind-memcheck"
3005
3006 case "$toolchain" in
3007     clang-asan)
3008         cc_default="clang"
3009         add_cflags  -fsanitize=address
3010         add_ldflags -fsanitize=address
3011     ;;
3012     clang-tsan)
3013         cc_default="clang"
3014         add_cflags  -fsanitize=thread -pie
3015         add_ldflags -fsanitize=thread -pie
3016     ;;
3017     clang-usan)
3018         cc_default="clang"
3019         add_cflags  -fsanitize=undefined
3020         add_ldflags -fsanitize=undefined
3021     ;;
3022     gcc-asan)
3023         cc_default="gcc"
3024         add_cflags  -fsanitize=address
3025         add_ldflags -fsanitize=address
3026     ;;
3027     gcc-tsan)
3028         cc_default="gcc"
3029         add_cflags  -fsanitize=thread -pie -fPIC
3030         add_ldflags -fsanitize=thread -pie -fPIC
3031     ;;
3032     gcc-usan)
3033         cc_default="gcc"
3034         add_cflags  -fsanitize=undefined
3035         add_ldflags -fsanitize=undefined
3036     ;;
3037     valgrind-massif)
3038         target_exec_default=${valgrind:-"valgrind"}
3039         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"
3040     ;;
3041     valgrind-memcheck)
3042         target_exec_default=${valgrind:-"valgrind"}
3043         target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3044     ;;
3045     msvc)
3046         # Check whether the current MSVC version needs the C99 converter.
3047         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3048         # support enough of C99 to build ffmpeg. Default to the new
3049         # behaviour if the regexp was unable to match anything, since this
3050         # successfully parses the version number of existing supported
3051         # versions that require the converter (MSVC 2010 and 2012).
3052         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3053         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3054             cc_default="cl"
3055         else
3056             cc_default="c99wrap cl"
3057         fi
3058         ld_default="link"
3059         nm_default="dumpbin -symbols"
3060         ar_default="lib"
3061         target_os_default="win32"
3062         # Use a relative path for TMPDIR. This makes sure all the
3063         # ffconf temp files are written with a relative path, avoiding
3064         # issues with msys/win32 path conversion for MSVC parameters
3065         # such as -Fo<file> or -out:<file>.
3066         TMPDIR=.
3067     ;;
3068     icl)
3069         cc_default="icl"
3070         ld_default="xilink"
3071         nm_default="dumpbin -symbols"
3072         ar_default="xilib"
3073         target_os_default="win32"
3074         TMPDIR=.
3075     ;;
3076     gcov)
3077         add_cflags  -fprofile-arcs -ftest-coverage
3078         add_ldflags -fprofile-arcs -ftest-coverage
3079     ;;
3080     hardened)
3081         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3082         add_cflags   -fno-strict-overflow -fstack-protector-all
3083         add_ldflags  -Wl,-z,relro -Wl,-z,now
3084     ;;
3085     ?*)
3086         die "Unknown toolchain $toolchain"
3087     ;;
3088 esac
3089
3090 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3091     target_exec target_os yasmexe
3092 enabled cross_compile || host_cc_default=$cc
3093 set_default host_cc
3094
3095 pkg_config_fail_message=""
3096 if ! $pkg_config --version >/dev/null 2>&1; then
3097     warn "$pkg_config not found, library detection may fail."
3098     pkg_config=false
3099 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
3100     pkg_config_fail_message="
3101 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
3102 fi
3103
3104 if test $doxygen != $doxygen_default && \
3105   ! $doxygen --version >/dev/null 2>&1; then
3106     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3107 fi
3108
3109 exesuf() {
3110     case $1 in
3111         mingw32*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3112     esac
3113 }
3114
3115 EXESUF=$(exesuf $target_os)
3116 HOSTEXESUF=$(exesuf $host_os)
3117
3118 # set temporary file name
3119 : ${TMPDIR:=$TEMPDIR}
3120 : ${TMPDIR:=$TMP}
3121 : ${TMPDIR:=/tmp}
3122
3123 if [ -n "$tempprefix" ] ; then
3124     mktemp(){
3125         echo $tempprefix.${HOSTNAME}.${UID}
3126     }
3127 elif ! check_cmd mktemp -u XXXXXX; then
3128     # simple replacement for missing mktemp
3129     # NOT SAFE FOR GENERAL USE
3130     mktemp(){
3131         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3132     }
3133 fi
3134
3135 tmpfile(){
3136     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
3137         (set -C; exec > $tmp) 2>/dev/null ||
3138         die "Unable to create temporary file in $TMPDIR."
3139     append TMPFILES $tmp
3140     eval $1=$tmp
3141 }
3142
3143 trap 'rm -f -- $TMPFILES' EXIT
3144
3145 tmpfile TMPASM .asm
3146 tmpfile TMPC   .c
3147 tmpfile TMPCPP .cpp
3148 tmpfile TMPE   $EXESUF
3149 tmpfile TMPH   .h
3150 tmpfile TMPM   .m
3151 tmpfile TMPO   .o
3152 tmpfile TMPS   .S
3153 tmpfile TMPSH  .sh
3154 tmpfile TMPV   .ver
3155
3156 unset -f mktemp
3157
3158 chmod +x $TMPE
3159
3160 # make sure we can execute files in $TMPDIR
3161 cat > $TMPSH 2>> $logfile <<EOF
3162 #! /bin/sh
3163 EOF
3164 chmod +x $TMPSH >> $logfile 2>&1
3165 if ! $TMPSH >> $logfile 2>&1; then
3166     cat <<EOF
3167 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3168 variable to another directory and make sure that it is not mounted noexec.
3169 EOF
3170     die "Sanity test failed."
3171 fi
3172
3173 armasm_flags(){
3174     for flag; do
3175         case $flag in
3176             # Filter out MSVC cl.exe options from cflags that shouldn't
3177             # be passed to gas-preprocessor
3178             -M[TD]*)                                            ;;
3179             *)                  echo $flag                      ;;
3180         esac
3181    done
3182 }
3183
3184 ccc_flags(){
3185     for flag; do
3186         case $flag in
3187             -std=c99)           echo -c99                       ;;
3188             -mcpu=*)            echo -arch ${flag#*=}           ;;
3189             -mieee)             echo -ieee                      ;;
3190             -O*|-fast)          echo $flag                      ;;
3191             -fno-math-errno)    echo -assume nomath_errno       ;;
3192             -g)                 echo -g3                        ;;
3193             -Wall)              echo -msg_enable level2         ;;
3194             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
3195             -Wl,*)              echo $flag                      ;;
3196             -f*|-W*)                                            ;;
3197             *)                  echo $flag                      ;;
3198         esac
3199    done
3200 }
3201
3202 cparser_flags(){
3203     for flag; do
3204         case $flag in
3205             -Wno-switch)             echo -Wno-switch-enum ;;
3206             -Wno-format-zero-length) ;;
3207             -Wdisabled-optimization) ;;
3208             -Wno-pointer-sign)       echo -Wno-other ;;
3209             *)                       echo $flag ;;
3210         esac
3211     done
3212 }
3213
3214 msvc_common_flags(){
3215     for flag; do
3216         case $flag in
3217             # In addition to specifying certain flags under the compiler
3218             # specific filters, they must be specified here as well or else the
3219             # generic catch all at the bottom will print the original flag.
3220             -Wall)                ;;
3221             -std=c99)             ;;
3222             # Common flags
3223             -fomit-frame-pointer) ;;
3224             -g)                   echo -Z7 ;;
3225             -fno-math-errno)      ;;
3226             -fno-common)          ;;
3227             -fno-signed-zeros)    ;;
3228             -fPIC)                ;;
3229             -mthumb)              ;;
3230             -march=*)             ;;
3231             -lz)                  echo zlib.lib ;;
3232             -lavifil32)           echo vfw32.lib ;;
3233             -lavicap32)           echo vfw32.lib user32.lib ;;
3234             -l*)                  echo ${flag#-l}.lib ;;
3235             -L*)                  echo -libpath:${flag#-L} ;;
3236             *)                    echo $flag ;;
3237         esac
3238     done
3239 }
3240
3241 msvc_flags(){
3242     msvc_common_flags "$@"
3243     for flag; do
3244         case $flag in
3245             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3246                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3247                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3248                                        -wd4554 \
3249                                        -wd4273 -wd4701 ;;
3250         esac
3251     done
3252 }
3253
3254 icl_flags(){
3255     msvc_common_flags "$@"
3256     for flag; do
3257         case $flag in
3258             # Despite what Intel's documentation says -Wall, which is supported
3259             # on Windows, does enable remarks so disable them here.
3260             -Wall)                echo $flag -Qdiag-disable:remark ;;
3261             -std=c99)             echo -Qstd=c99 ;;
3262             -flto)                echo -ipo ;;
3263         esac
3264     done
3265 }
3266
3267 icc_flags(){
3268     for flag; do
3269         case $flag in
3270             -flto)                echo -ipo ;;
3271             *)                    echo $flag ;;
3272         esac
3273     done
3274 }
3275
3276 pgi_flags(){
3277     for flag; do
3278         case $flag in
3279             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3280             -fomit-frame-pointer) echo -Mnoframe ;;
3281             -g)                   echo -gopt ;;
3282             *)                    echo $flag ;;
3283         esac
3284     done
3285 }
3286
3287 suncc_flags(){
3288     for flag; do
3289         case $flag in
3290             -march=*|-mcpu=*)
3291                 case "${flag#*=}" in
3292                     native)                   echo -xtarget=native       ;;
3293                     v9|niagara)               echo -xarch=sparc          ;;
3294                     ultrasparc)               echo -xarch=sparcvis       ;;
3295                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3296                     i586|pentium)             echo -xchip=pentium        ;;
3297                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3298                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3299                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3300                     pentium4*)          echo -xtarget=pentium4           ;;
3301                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3302                     *-sse3)             echo -xarch=sse3                 ;;
3303                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3304                     bonnell)                   echo -xarch=ssse3         ;;
3305                     corei7|nehalem)            echo -xtarget=nehalem     ;;
3306                     westmere)                  echo -xtarget=westmere    ;;
3307                     silvermont)                echo -xarch=sse4_2        ;;
3308                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
3309                     core-avx*|ivybridge|haswell|broadwell)
3310                                                echo -xarch=avx           ;;
3311                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
3312                     btver1)                    echo -xarch=amdsse4a      ;;
3313                     btver2|bdver*)             echo -xarch=avx           ;;
3314                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3315                     k8|opteron|athlon64|athlon-fx)
3316                                                echo -xarch=sse2a         ;;
3317                     athlon*)                   echo -xarch=pentium_proa  ;;
3318                 esac
3319                 ;;
3320             -std=c99)             echo -xc99              ;;
3321             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3322             -fPIC)                echo -KPIC -xcode=pic32 ;;
3323             -W*,*)                echo $flag              ;;
3324             -f*-*|-W*|-mimpure-text)                      ;;
3325             -shared)              echo -G                 ;;
3326             *)                    echo $flag              ;;
3327         esac
3328     done
3329 }
3330
3331 tms470_flags(){
3332     for flag; do
3333         case $flag in
3334             -march=*|-mcpu=*)
3335                 case "${flag#*=}" in
3336                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3337                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3338                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3339                     armv6*|arm11*)          echo -mv=6   ;;
3340                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3341                                             echo -mv=5e  ;;
3342                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3343                 esac
3344                 ;;
3345             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3346             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3347             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3348             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3349             -msoft-float)   echo --float_support=vfplib       ;;
3350             -O[0-3]|-mf=*)  echo $flag                        ;;
3351             -g)             echo -g -mn                       ;;
3352             -pds=*)         echo $flag                        ;;
3353             -D*|-I*)        echo $flag                        ;;
3354             --gcc|--abi=*)  echo $flag                        ;;
3355             -me)            echo $flag                        ;;
3356         esac
3357     done
3358 }
3359
3360 probe_cc(){
3361     pfx=$1
3362     _cc=$2
3363
3364     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3365     unset _ld_o _ldflags _ld_lib _ld_path
3366     unset _depflags _DEPCMD _DEPFLAGS
3367     _flags_filter=echo
3368
3369     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
3370         true # no-op to avoid reading stdin in following checks
3371     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3372         _type=llvm_gcc
3373         gcc_extra_ver=$(expr "$($_cc --version | head -n1)" : '.*\((.*)\)')
3374         _ident="llvm-gcc $($_cc -dumpversion) $gcc_extra_ver"
3375         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3376         _cflags_speed='-O3'
3377         _cflags_size='-Os'
3378     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3379         _type=gcc
3380         gcc_version=$($_cc --version | head -n1)
3381         gcc_basever=$($_cc -dumpversion)
3382         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3383         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3384         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3385         if ! $_cc -dumpversion | grep -q '^2\.'; then
3386             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3387         fi
3388         _cflags_speed='-O3'
3389         _cflags_size='-Os'
3390     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3391         _type=icc
3392         _ident=$($_cc --version | head -n1)
3393         _depflags='-MMD'
3394         _cflags_speed='-O3'
3395         _cflags_size='-Os'
3396         _cflags_noopt='-O1'
3397         _flags_filter=icc_flags
3398     elif $_cc -v 2>&1 | grep -q xlc; then
3399         _type=xlc
3400         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3401         _cflags_speed='-O5'
3402         _cflags_size='-O5 -qcompact'
3403     elif $_cc -V 2>/dev/null | grep -q Compaq; then
3404         _type=ccc
3405         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
3406         _DEPFLAGS='-M'
3407         _cflags_speed='-fast'
3408         _cflags_size='-O1'
3409         _flags_filter=ccc_flags
3410     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
3411         test -d "$sysroot" || die "No valid sysroot specified."
3412         _type=armcc
3413         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
3414         armcc_conf="$PWD/armcc.conf"
3415         $_cc --arm_linux_configure                 \
3416              --arm_linux_config_file="$armcc_conf" \
3417              --configure_sysroot="$sysroot"        \
3418              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
3419              die "Error creating armcc configuration file."
3420         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
3421         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
3422         as_default="${cross_prefix}gcc"
3423         _depflags='-MMD'
3424         _cflags_speed='-O3'
3425         _cflags_size='-Os'
3426     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
3427         _type=tms470
3428         _ident=$($_cc -version | head -n1 | tr -s ' ')
3429         _flags='--gcc --abi=eabi -me'
3430         _cc_e='-ppl -fe=$@'
3431         _cc_o='-fe=$@'
3432         _depflags='-ppa -ppd=$(@:.o=.d)'
3433         _cflags_speed='-O3 -mf=5'
3434         _cflags_size='-O3 -mf=2'
3435         _flags_filter=tms470_flags
3436     elif $_cc -v 2>&1 | grep -q clang; then
3437         _type=clang
3438         _ident=$($_cc --version | head -n1)
3439         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3440         _cflags_speed='-O3'
3441         _cflags_size='-Os'
3442     elif $_cc -V 2>&1 | grep -q Sun; then
3443         _type=suncc
3444         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
3445         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3446         _DEPFLAGS='-xM1 -xc99'
3447         _ldflags='-std=c99'
3448         _cflags_speed='-O5'
3449         _cflags_size='-O5 -xspace'
3450         _flags_filter=suncc_flags
3451     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3452         _type=pathscale
3453         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3454         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3455         _cflags_speed='-O2'
3456         _cflags_size='-Os'
3457         _flags_filter='filter_out -Wdisabled-optimization'
3458     elif $_cc -v 2>&1 | grep -q Open64; then
3459         _type=open64
3460         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3461         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3462         _cflags_speed='-O2'
3463         _cflags_size='-Os'
3464         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3465     elif $_cc -V 2>&1 | grep -q Portland; then
3466         _type=pgi
3467         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
3468         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
3469         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
3470         _cflags_size="-O2 -Munroll=c:1 $opt_common"
3471         _cflags_noopt="-O"
3472         _flags_filter=pgi_flags
3473     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
3474         _type=armasm
3475         _ident=$($_cc | head -n1)
3476         # 4509: "This form of conditional instruction is deprecated"
3477         _flags="-nologo -ignore 4509"
3478         _flags_filter=armasm_flags
3479     elif $_cc 2>&1 | grep -q Intel; then
3480         _type=icl
3481         _ident=$($cc 2>&1 | head -n1)
3482         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3483         # Not only is O3 broken on 13.x+ but it is slower on all previous
3484         # versions (tested) as well.
3485         _cflags_speed="-O2"
3486         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3487         if $_cc 2>&1 | grep -q Linker; then
3488             _ld_o='-out:$@'
3489         else
3490             _ld_o='-Fe$@'
3491         fi
3492         _cc_o='-Fo$@'
3493         _cc_e='-P'
3494         _flags_filter=icl_flags
3495         _ld_lib='lib%.a'
3496         _ld_path='-libpath:'
3497         # -Qdiag-error to make icl error when seeing certain unknown arguments
3498         _flags='-nologo -Qdiag-error:4044,10157'
3499         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
3500         # with MSVC which enables it by default.
3501         _cflags='-D_USE_MATH_DEFINES -FIstdlib.h -Dstrtoll=_strtoi64 -Qms0 -Qvec- -Qsimd- -GS -fp:precise'
3502         if [ $pfx = hostcc ]; then
3503             append _cflags -Dsnprintf=_snprintf
3504         fi
3505         disable stripping
3506     elif $_cc 2>&1 | grep -q Microsoft; then
3507         _type=msvc
3508         _ident=$($cc 2>&1 | head -n1)
3509         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
3510         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
3511         _cflags_speed="-O2"
3512         _cflags_size="-O1"
3513         if $_cc 2>&1 | grep -q Linker; then
3514             _ld_o='-out:$@'
3515         else
3516             _ld_o='-Fe$@'
3517         fi
3518         _cc_o='-Fo$@'
3519         _cc_e='-P -Fi$@'
3520         _flags_filter=msvc_flags
3521         _ld_lib='lib%.a'
3522         _ld_path='-libpath:'
3523         _flags='-nologo'
3524         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -Dinline=__inline -FIstdlib.h -Dstrtoll=_strtoi64'
3525         if [ $pfx = hostcc ]; then
3526             append _cflags -Dsnprintf=_snprintf
3527         fi
3528         disable stripping
3529     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3530         _type=cparser
3531         _ident=$($_cc --version | head -n1)
3532         _depflags='-MMD'
3533         _cflags_speed='-O4'
3534         _cflags_size='-O2'
3535         _flags_filter=cparser_flags
3536     fi
3537
3538     eval ${pfx}_type=\$_type
3539     eval ${pfx}_ident=\$_ident
3540 }
3541
3542 set_ccvars(){
3543     eval ${1}_C=\${_cc_c-\${${1}_C}}
3544     eval ${1}_E=\${_cc_e-\${${1}_E}}
3545     eval ${1}_O=\${_cc_o-\${${1}_O}}
3546
3547     if [ -n "$_depflags" ]; then
3548         eval ${1}_DEPFLAGS=\$_depflags
3549     else
3550         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3551         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3552         eval DEP${1}FLAGS=\$_flags
3553     fi
3554 }
3555
3556 probe_cc cc "$cc"
3557 cflags_filter=$_flags_filter
3558 cflags_speed=$_cflags_speed
3559 cflags_size=$_cflags_size
3560 cflags_noopt=$_cflags_noopt
3561 add_cflags $_flags $_cflags
3562 cc_ldflags=$_ldflags
3563 set_ccvars CC
3564
3565 probe_cc hostcc "$host_cc"
3566 host_cflags_filter=$_flags_filter
3567 add_host_cflags  $_flags $_cflags
3568 set_ccvars HOSTCC
3569
3570 test -n "$cc_type" && enable $cc_type ||
3571     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3572
3573 : ${as_default:=$cc}
3574 : ${dep_cc_default:=$cc}
3575 : ${ld_default:=$cc}
3576 : ${host_ld_default:=$host_cc}
3577 set_default ar as dep_cc ld host_ld windres
3578
3579 probe_cc as "$as"
3580 asflags_filter=$_flags_filter
3581 add_asflags $_flags $_cflags
3582 set_ccvars AS
3583
3584 probe_cc ld "$ld"
3585 ldflags_filter=$_flags_filter
3586 add_ldflags $_flags $_ldflags
3587 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3588 LD_O=${_ld_o-$LD_O}
3589 LD_LIB=${_ld_lib-$LD_LIB}
3590 LD_PATH=${_ld_path-$LD_PATH}
3591
3592 probe_cc hostld "$host_ld"
3593 host_ldflags_filter=$_flags_filter
3594 add_host_ldflags $_flags $_ldflags
3595 HOSTLD_O=${_ld_o-$HOSTLD_O}
3596
3597 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3598     probe_cc depcc "$dep_cc"
3599     CCDEP=${_DEPCMD:-$DEPCMD}
3600     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3601     DEPCCFLAGS=$_flags
3602 fi
3603
3604 if $ar 2>&1 | grep -q Microsoft; then
3605     arflags="-nologo"
3606     ar_o='-out:$@'
3607 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3608     arflags="rq"
3609     ar_o='$@'
3610 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3611     arflags='-Xany -r -c'
3612     ar_o='$@'
3613 elif $ar 2>&1 | grep -q "\[D\] "; then
3614     arflags="rcD"
3615     ar_o='$@'
3616 else
3617     arflags="rc"
3618     ar_o='$@'
3619 fi
3620
3621 add_cflags $extra_cflags
3622 add_cxxflags $extra_cxxflags
3623 add_asflags $extra_cflags
3624
3625 if test -n "$sysroot"; then
3626     case "$cc_type" in
3627         gcc|llvm_gcc|clang)
3628             add_cppflags --sysroot="$sysroot"
3629             add_ldflags --sysroot="$sysroot"
3630 # On Darwin --sysroot may be ignored, -isysroot always affects headers and linking
3631             add_cppflags -isysroot "$sysroot"
3632             add_ldflags -isysroot "$sysroot"
3633         ;;
3634         tms470)
3635             add_cppflags -I"$sysinclude"
3636             add_ldflags  --sysroot="$sysroot"
3637         ;;
3638     esac
3639 fi
3640
3641 if test "$cpu" = host; then
3642     enabled cross_compile &&
3643         die "--cpu=host makes no sense when cross-compiling."
3644
3645     case "$cc_type" in
3646         gcc|llvm_gcc)
3647             check_native(){
3648                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3649                 sed -n "/cc1.*$1=/{
3650                             s/.*$1=\\([^ ]*\\).*/\\1/
3651                             p
3652                             q
3653                         }" $TMPE
3654             }
3655             cpu=$(check_native -march || check_native -mcpu)
3656         ;;
3657     esac
3658
3659     test "${cpu:-host}" = host &&
3660         die "--cpu=host not supported with compiler $cc"
3661 fi
3662
3663 # Deal with common $arch aliases
3664 case "$arch" in
3665     aarch64|arm64)
3666         arch="aarch64"
3667     ;;
3668     arm*|iPad*|iPhone*)
3669         arch="arm"
3670     ;;
3671     mips*|IP*)
3672         arch="mips"
3673     ;;
3674     parisc*|hppa*)
3675         arch="parisc"
3676     ;;
3677     "Power Macintosh"|ppc*|powerpc*)
3678         arch="ppc"
3679     ;;
3680     s390|s390x)
3681         arch="s390"
3682     ;;
3683     sh4|sh)
3684         arch="sh4"
3685     ;;
3686     sun4u|sparc*)
3687         arch="sparc"
3688     ;;
3689     tilegx|tile-gx)
3690         arch="tilegx"
3691     ;;
3692     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
3693         arch="x86"
3694     ;;
3695 esac
3696
3697 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3698 enable $arch
3699
3700 # Add processor-specific flags
3701 if enabled aarch64; then
3702
3703     case $cpu in
3704         armv*)
3705             cpuflags="-march=$cpu"
3706         ;;
3707         *)
3708             cpuflags="-mcpu=$cpu"
3709         ;;
3710     esac
3711
3712 elif enabled alpha; then
3713
3714     cpuflags="-mcpu=$cpu"
3715
3716 elif enabled arm; then
3717
3718     check_arm_arch() {
3719         check_cpp_condition stddef.h \
3720             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3721             $cpuflags
3722     }
3723
3724     probe_arm_arch() {
3725         if   check_arm_arch 4;        then echo armv4;
3726         elif check_arm_arch 4T;       then echo armv4t;
3727         elif check_arm_arch 5;        then echo armv5;
3728         elif check_arm_arch 5E;       then echo armv5e;
3729         elif check_arm_arch 5T;       then echo armv5t;
3730         elif check_arm_arch 5TE;      then echo armv5te;
3731         elif check_arm_arch 5TEJ;     then echo armv5te;
3732         elif check_arm_arch 6;        then echo armv6;
3733         elif check_arm_arch 6J;       then echo armv6j;
3734         elif check_arm_arch 6K;       then echo armv6k;
3735         elif check_arm_arch 6Z;       then echo armv6z;
3736         elif check_arm_arch 6ZK;      then echo armv6zk;
3737         elif check_arm_arch 6T2;      then echo armv6t2;
3738         elif check_arm_arch 7;        then echo armv7;
3739         elif check_arm_arch 7A  7_A;  then echo armv7-a;
3740         elif check_arm_arch 7R  7_R;  then echo armv7-r;
3741         elif check_arm_arch 7M  7_M;  then echo armv7-m;
3742         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
3743         elif check_arm_arch 8A  8_A;  then echo armv8-a;
3744         fi
3745     }
3746
3747     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3748
3749     case $cpu in
3750         armv*)
3751             cpuflags="-march=$cpu"
3752             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3753         ;;
3754         *)
3755             cpuflags="-mcpu=$cpu"
3756             case $cpu in
3757                 cortex-a*)                               subarch=armv7a  ;;
3758                 cortex-r*)                               subarch=armv7r  ;;
3759                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3760                 arm11*)                                  subarch=armv6   ;;
3761                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3762                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3763                 *)                             subarch=$(probe_arm_arch) ;;
3764             esac
3765         ;;
3766     esac
3767
3768     case "$subarch" in
3769         armv5t*)    enable fast_clz                ;;
3770         armv[6-8]*)
3771             enable fast_clz
3772             disabled fast_unaligned || enable fast_unaligned
3773             ;;
3774     esac
3775
3776 elif enabled avr32; then
3777
3778     case $cpu in
3779         ap7[02]0[0-2])
3780             subarch="avr32_ap"
3781             cpuflags="-mpart=$cpu"
3782         ;;
3783         ap)
3784             subarch="avr32_ap"
3785             cpuflags="-march=$cpu"
3786         ;;
3787         uc3[ab]*)
3788             subarch="avr32_uc"
3789             cpuflags="-mcpu=$cpu"
3790         ;;
3791         uc)
3792             subarch="avr32_uc"
3793             cpuflags="-march=$cpu"
3794         ;;
3795     esac
3796
3797 elif enabled bfin; then
3798
3799     cpuflags="-mcpu=$cpu"
3800
3801 elif enabled mips; then
3802
3803     cpuflags="-march=$cpu"
3804
3805     case $cpu in
3806         24kc)
3807             disable mipsfpu
3808             disable mipsdspr1
3809             disable mipsdspr2
3810         ;;
3811         24kf*)
3812             disable mipsdspr1
3813             disable mipsdspr2
3814         ;;
3815         24kec|34kc|1004kc)
3816             disable mipsfpu
3817             disable mipsdspr2
3818         ;;
3819         24kef*|34kf*|1004kf*)
3820             disable mipsdspr2
3821         ;;
3822         74kc)
3823             disable mipsfpu
3824         ;;
3825     esac
3826
3827 elif enabled ppc; then
3828
3829     disable ldbrx
3830     disable vsx
3831
3832     case $(tolower $cpu) in
3833         601|ppc601|powerpc601)
3834             cpuflags="-mcpu=601"
3835             disable altivec
3836         ;;
3837         603*|ppc603*|powerpc603*)
3838             cpuflags="-mcpu=603"
3839             disable altivec
3840         ;;
3841         604*|ppc604*|powerpc604*)
3842             cpuflags="-mcpu=604"
3843             disable altivec
3844         ;;
3845         g3|75*|ppc75*|powerpc75*)
3846             cpuflags="-mcpu=750"
3847             disable altivec
3848         ;;
3849         g4|745*|ppc745*|powerpc745*)
3850             cpuflags="-mcpu=7450"
3851         ;;
3852         74*|ppc74*|powerpc74*)
3853             cpuflags="-mcpu=7400"
3854         ;;
3855         g5|970|ppc970|powerpc970)
3856             cpuflags="-mcpu=970"
3857         ;;
3858         power[3-8]*)
3859             cpuflags="-mcpu=$cpu"
3860         ;;
3861         cell)
3862             cpuflags="-mcpu=cell"
3863             enable ldbrx
3864         ;;
3865         e500mc)
3866             cpuflags="-mcpu=e500mc"
3867             disable altivec
3868         ;;
3869         e500v2)
3870             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3871             disable altivec
3872             disable dcbzl
3873         ;;
3874         e500)
3875             cpuflags="-mcpu=8540 -mhard-float"
3876             disable altivec
3877             disable dcbzl
3878         ;;
3879     esac
3880
3881 elif enabled sparc; then
3882
3883     case $cpu in
3884         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3885             cpuflags="-mcpu=$cpu"
3886         ;;
3887         ultrasparc*|niagara[234])
3888             cpuflags="-mcpu=$cpu"
3889         ;;
3890     esac
3891
3892 elif enabled x86; then
3893
3894     case $cpu in
3895         i[345]86|pentium)
3896             cpuflags="-march=$cpu"
3897             disable i686
3898             disable mmx
3899         ;;
3900         # targets that do NOT support nopl and conditional mov (cmov)
3901         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3902             cpuflags="-march=$cpu"
3903             disable i686
3904         ;;
3905         # targets that do support nopl and conditional mov (cmov)
3906         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
3907         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|amdfam10|barcelona|b[dt]ver*)
3908             cpuflags="-march=$cpu"
3909             enable i686
3910             enable fast_cmov
3911         ;;
3912         # targets that do support conditional mov but on which it's slow
3913         pentium4|pentium4m|prescott|nocona)
3914             cpuflags="-march=$cpu"
3915             enable i686
3916             disable fast_cmov
3917         ;;
3918     esac
3919
3920 fi
3921
3922 if [ "$cpu" != generic ]; then
3923     add_cflags  $cpuflags
3924     add_asflags $cpuflags
3925 fi
3926
3927 # compiler sanity check
3928 check_exec <<EOF
3929 int main(void){ return 0; }
3930 EOF
3931 if test "$?" != 0; then
3932     echo "$cc is unable to create an executable file."
3933     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3934         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3935         echo "Only do this if you know what cross compiling means."
3936     fi
3937     die "C compiler test failed."
3938 fi
3939
3940 add_cppflags -D_ISOC99_SOURCE
3941 add_cxxflags -D__STDC_CONSTANT_MACROS
3942 check_cflags -std=c99
3943 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
3944 #include <stdlib.h>
3945 EOF
3946 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
3947 #include <stdlib.h>
3948 EOF
3949
3950 add_host_cppflags -D_ISOC99_SOURCE
3951 check_host_cflags -std=c99
3952 check_host_cflags -Wall
3953 check_host_cflags -O3
3954
3955 check_64bit(){
3956     arch32=$1
3957     arch64=$2
3958     expr=$3
3959     check_code cc "" "int test[2*($expr) - 1]" &&
3960         subarch=$arch64 || subarch=$arch32
3961 }
3962
3963 case "$arch" in
3964     aarch64|alpha|ia64)
3965         spic=$shared
3966     ;;
3967     mips)
3968         check_64bit mips mips64 '_MIPS_SIM > 1'
3969         spic=$shared
3970     ;;
3971     parisc)
3972         check_64bit parisc parisc64 'sizeof(void *) > 4'
3973         spic=$shared
3974     ;;
3975     ppc)
3976         check_64bit ppc ppc64 'sizeof(void *) > 4'
3977         spic=$shared
3978     ;;
3979     s390)
3980         check_64bit s390 s390x 'sizeof(void *) > 4'
3981         spic=$shared
3982     ;;
3983     sparc)
3984         check_64bit sparc sparc64 'sizeof(void *) > 4'
3985         spic=$shared
3986     ;;
3987     x86)
3988         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3989         # Treat x32 as x64 for now. Note it also needs spic=$shared
3990         test "$subarch" = "x86_32" && check_cpp_condition stddef.h 'defined(__x86_64__)' &&
3991             subarch=x86_64
3992         if test "$subarch" = "x86_64"; then
3993             spic=$shared
3994         fi
3995     ;;
3996     ppc)
3997         check_cc <<EOF && subarch="ppc64"
3998         int test[(int)sizeof(char*) - 7];
3999 EOF
4000     ;;
4001 esac
4002
4003 enable $subarch
4004 enabled spic && enable_weak pic
4005
4006 # OS specific
4007 case $target_os in
4008     aix)
4009         SHFLAGS=-shared
4010         add_cppflags '-I\$(SRC_PATH)/compat/aix'
4011         enabled shared && add_ldflags -Wl,-brtl
4012         ;;
4013     android)
4014         disable symver
4015         enable section_data_rel_ro
4016         SLIB_INSTALL_NAME='$(SLIBNAME)'
4017         SLIB_INSTALL_LINKS=
4018         # soname not set on purpose
4019         SHFLAGS=-shared
4020         ;;
4021     haiku)
4022         prefix_default="/boot/common"
4023         network_extralibs="-lnetwork"
4024         host_libs=
4025         ;;
4026     sunos)
4027         SHFLAGS='-shared -Wl,-h,$$(@F)'
4028         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
4029         network_extralibs="-lsocket -lnsl"
4030         # When using suncc to build, the Solaris linker will mark
4031         # an executable with each instruction set encountered by
4032         # the Solaris assembler.  As our libraries contain their own
4033         # guards for processor-specific code, instead suppress
4034         # generation of the HWCAPS ELF section on Solaris x86 only.
4035         enabled_all suncc x86 &&
4036             echo "hwcap_1 = OVERRIDE;" > mapfile &&
4037             add_ldflags -Wl,-M,mapfile
4038         nm_default='nm -P -g'
4039         ;;
4040     netbsd)
4041         disable symver
4042         oss_indev_extralibs="-lossaudio"
4043         oss_outdev_extralibs="-lossaudio"
4044         enabled gcc || check_ldflags -Wl,-zmuldefs
4045         ;;
4046     openbsd|bitrig)
4047         disable symver
4048         SHFLAGS='-shared'
4049         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
4050         SLIB_INSTALL_LINKS=
4051         oss_indev_extralibs="-lossaudio"
4052         oss_outdev_extralibs="-lossaudio"
4053         ;;
4054     dragonfly)
4055         disable symver
4056         ;;
4057     freebsd)
4058         ;;
4059     bsd/os)
4060         add_extralibs -lpoll -lgnugetopt
4061         strip="strip -d"
4062         ;;
4063     darwin)
4064         enabled ppc && add_asflags -force_cpusubtype_ALL
4065         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
4066         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
4067         strip="${strip} -x"
4068         add_ldflags -Wl,-dynamic,-search_paths_first