Merge commit 'faab8f9fcb4ffeb967dc6872c0f1e9da719106ce'
[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 [autodetect]
137   --disable-w32threads     disable Win32 threads [autodetect]
138   --disable-os2threads     disable OS/2 threads [autodetect]
139   --disable-network        disable network support [no]
140   --disable-dct            disable DCT code
141   --disable-dwt            disable DWT code
142   --disable-error-resilience disable error resilience code
143   --disable-lsp            disable LSP code
144   --disable-lzo            disable LZO decoder code
145   --disable-mdct           disable MDCT code
146   --disable-rdft           disable RDFT code
147   --disable-fft            disable FFT code
148   --disable-faan           disable floating point AAN (I)DCT code
149   --disable-pixelutils     disable pixel utils in libavutil
150
151 Hardware accelerators:
152   --disable-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-libmfx          enable HW acceleration through libmfx
223   --enable-libmodplug      enable ModPlug via libmodplug [no]
224   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
225   --enable-libnut          enable NUT (de)muxing via libnut,
226                            native (de)muxer exists [no]
227   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
228   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
229   --enable-libopencv       enable video filtering via libopencv [no]
230   --enable-libopenh264     enable H.264 encoding via OpenH264 [no]
231   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
232   --enable-libopus         enable Opus de/encoding via libopus [no]
233   --enable-libpulse        enable Pulseaudio input via libpulse [no]
234   --enable-libquvi         enable quvi input via libquvi [no]
235   --enable-librtmp         enable RTMP[E] support via librtmp [no]
236   --enable-libschroedinger enable Dirac de/encoding via libschroedinger [no]
237   --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
238   --enable-libsmbclient    enable Samba protocol via libsmbclient [no]
239   --enable-libsoxr         enable Include libsoxr resampling [no]
240   --enable-libspeex        enable Speex de/encoding via libspeex [no]
241   --enable-libssh          enable SFTP protocol via libssh [no]
242   --enable-libstagefright-h264  enable H.264 decoding via libstagefright [no]
243   --enable-libtheora       enable Theora encoding via libtheora [no]
244   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
245   --enable-libutvideo      enable Ut Video encoding and decoding via libutvideo [no]
246   --enable-libv4l2         enable libv4l2/v4l-utils [no]
247   --enable-libvidstab      enable video stabilization using vid.stab [no]
248   --enable-libvo-aacenc    enable AAC encoding via libvo-aacenc [no]
249   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
250   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
251                            native implementation exists [no]
252   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
253   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
254   --enable-libwebp         enable WebP encoding via libwebp [no]
255   --enable-libx264         enable H.264 encoding via x264 [no]
256   --enable-libx265         enable HEVC encoding via x265 [no]
257   --enable-libxavs         enable AVS encoding via xavs [no]
258   --enable-libxcb          enable X11 grabbing using XCB [autodetect]
259   --enable-libxcb-shm      enable X11 grabbing shm communication [autodetect]
260   --enable-libxcb-xfixes   enable X11 grabbing mouse rendering [autodetect]
261   --enable-libxcb-shape    enable X11 grabbing shape rendering [autodetect]
262   --enable-libxvid         enable Xvid encoding via xvidcore,
263                            native MPEG-4/Xvid encoder exists [no]
264   --enable-libzmq          enable message passing via libzmq [no]
265   --enable-libzvbi         enable teletext support via libzvbi [no]
266   --disable-lzma           disable lzma [autodetect]
267   --enable-decklink        enable Blackmagick DeckLink I/O support [no]
268   --enable-nvenc           enable NVIDIA NVENC support [no]
269   --enable-openal          enable OpenAL 1.1 capture support [no]
270   --enable-opencl          enable OpenCL code
271   --enable-opengl          enable OpenGL rendering [no]
272   --enable-openssl         enable openssl, needed for https support
273                            if gnutls is not used [no]
274   --disable-sdl            disable sdl [autodetect]
275   --enable-x11grab         enable X11 grabbing (legacy) [no]
276   --disable-xlib           disable xlib [autodetect]
277   --disable-zlib           disable zlib [autodetect]
278
279 Toolchain options:
280   --arch=ARCH              select architecture [$arch]
281   --cpu=CPU                select the minimum required CPU (affects
282                            instruction selection, may crash on older CPUs)
283   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
284   --progs-suffix=SUFFIX    program name suffix []
285   --enable-cross-compile   assume a cross-compiler is used
286   --sysroot=PATH           root of cross-build tree
287   --sysinclude=PATH        location of cross-build system headers
288   --target-os=OS           compiler targets OS [$target_os]
289   --target-exec=CMD        command to run executables on target
290   --target-path=DIR        path to view of build directory on target
291   --target-samples=DIR     path to samples directory on target
292   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
293   --toolchain=NAME         set tool defaults according to NAME
294   --nm=NM                  use nm tool NM [$nm_default]
295   --ar=AR                  use archive tool AR [$ar_default]
296   --as=AS                  use assembler AS [$as_default]
297   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
298   --yasmexe=EXE            use yasm-compatible assembler EXE [$yasmexe_default]
299   --cc=CC                  use C compiler CC [$cc_default]
300   --cxx=CXX                use C compiler CXX [$cxx_default]
301   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
302   --ld=LD                  use linker LD [$ld_default]
303   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
304   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
305   --ranlib=RANLIB          use ranlib RANLIB [$ranlib_default]
306   --doxygen=DOXYGEN        use DOXYGEN to generate API doc [$doxygen_default]
307   --host-cc=HOSTCC         use host C compiler HOSTCC
308   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
309   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
310   --host-ld=HOSTLD         use host linker HOSTLD
311   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
312   --host-libs=HLIBS        use libs HLIBS when linking for host
313   --host-os=OS             compiler host OS [$target_os]
314   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
315   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
316   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
317   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
318   --extra-libs=ELIBS       add ELIBS [$ELIBS]
319   --extra-version=STRING   version string suffix []
320   --optflags=OPTFLAGS      override optimization-related compiler flags
321   --build-suffix=SUFFIX    library name suffix []
322   --enable-pic             build position-independent code
323   --enable-thumb           compile for Thumb instruction set
324   --enable-lto             use link-time optimization
325
326 Advanced options (experts only):
327   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
328   --disable-symver         disable symbol versioning
329   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
330   --disable-safe-bitstream-reader
331                            disable buffer boundary checking in bitreaders
332                            (faster, but may crash)
333   --enable-memalign-hack   emulate memalign, interferes with memory debuggers
334   --sws-max-filter-size=N  the max filter size swscale uses [$sws_max_filter_size_default]
335
336 Optimization options (experts only):
337   --disable-asm            disable all assembly optimizations
338   --disable-altivec        disable AltiVec optimizations
339   --disable-amd3dnow       disable 3DNow! optimizations
340   --disable-amd3dnowext    disable 3DNow! extended optimizations
341   --disable-mmx            disable MMX optimizations
342   --disable-mmxext         disable MMXEXT optimizations
343   --disable-sse            disable SSE optimizations
344   --disable-sse2           disable SSE2 optimizations
345   --disable-sse3           disable SSE3 optimizations
346   --disable-ssse3          disable SSSE3 optimizations
347   --disable-sse4           disable SSE4 optimizations
348   --disable-sse42          disable SSE4.2 optimizations
349   --disable-avx            disable AVX optimizations
350   --disable-xop            disable XOP optimizations
351   --disable-fma3           disable FMA3 optimizations
352   --disable-fma4           disable FMA4 optimizations
353   --disable-avx2           disable AVX2 optimizations
354   --disable-armv5te        disable armv5te optimizations
355   --disable-armv6          disable armv6 optimizations
356   --disable-armv6t2        disable armv6t2 optimizations
357   --disable-vfp            disable VFP optimizations
358   --disable-neon           disable NEON optimizations
359   --disable-inline-asm     disable use of inline assembly
360   --disable-yasm           disable use of nasm/yasm assembly
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     qsvdec_example
1332     remuxing_example
1333     resampling_audio_example
1334     scaling_video_example
1335     transcode_aac_example
1336     transcoding_example
1337 "
1338
1339 EXTERNAL_LIBRARY_LIST="
1340     avisynth
1341     bzlib
1342     crystalhd
1343     decklink
1344     frei0r
1345     gnutls
1346     iconv
1347     ladspa
1348     libaacplus
1349     libass
1350     libbluray
1351     libbs2b
1352     libcaca
1353     libcdio
1354     libcelt
1355     libdc1394
1356     libfaac
1357     libfdk_aac
1358     libflite
1359     libfontconfig
1360     libfreetype
1361     libfribidi
1362     libgme
1363     libgsm
1364     libiec61883
1365     libilbc
1366     libmfx
1367     libmodplug
1368     libmp3lame
1369     libnut
1370     libopencore_amrnb
1371     libopencore_amrwb
1372     libopencv
1373     libopenh264
1374     libopenjpeg
1375     libopus
1376     libpulse
1377     libquvi
1378     librtmp
1379     libschroedinger
1380     libshine
1381     libsmbclient
1382     libsoxr
1383     libspeex
1384     libssh
1385     libstagefright_h264
1386     libtheora
1387     libtwolame
1388     libutvideo
1389     libv4l2
1390     libvidstab
1391     libvo_aacenc
1392     libvo_amrwbenc
1393     libvorbis
1394     libvpx
1395     libwavpack
1396     libwebp
1397     libx264
1398     libx265
1399     libxavs
1400     libxcb
1401     libxcb_shm
1402     libxcb_shape
1403     libxcb_xfixes
1404     libxvid
1405     libzmq
1406     libzvbi
1407     lzma
1408     nvenc
1409     openal
1410     opencl
1411     opengl
1412     openssl
1413     sdl
1414     x11grab
1415     xlib
1416     zlib
1417 "
1418
1419 DOCUMENT_LIST="
1420     doc
1421     htmlpages
1422     manpages
1423     podpages
1424     txtpages
1425 "
1426
1427 FEATURE_LIST="
1428     ftrapv
1429     gray
1430     hardcoded_tables
1431     runtime_cpudetect
1432     safe_bitstream_reader
1433     shared
1434     small
1435     static
1436     swscale_alpha
1437 "
1438
1439 HWACCEL_LIST="
1440     dxva2
1441     vaapi
1442     vda
1443     vdpau
1444     xvmc
1445 "
1446
1447 LIBRARY_LIST="
1448     avcodec
1449     avdevice
1450     avfilter
1451     avformat
1452     avresample
1453     avutil
1454     postproc
1455     swresample
1456     swscale
1457 "
1458
1459 LICENSE_LIST="
1460     gpl
1461     nonfree
1462     version3
1463 "
1464
1465 PROGRAM_LIST="
1466     ffplay
1467     ffprobe
1468     ffserver
1469     ffmpeg
1470 "
1471
1472 SUBSYSTEM_LIST="
1473     dct
1474     dwt
1475     error_resilience
1476     faan
1477     fast_unaligned
1478     fft
1479     lsp
1480     lzo
1481     mdct
1482     pixelutils
1483     network
1484     rdft
1485 "
1486
1487 CONFIG_LIST="
1488     $COMPONENT_LIST
1489     $DOCUMENT_LIST
1490     $EXAMPLE_LIST
1491     $EXTERNAL_LIBRARY_LIST
1492     $FEATURE_LIST
1493     $HWACCEL_LIST
1494     $LICENSE_LIST
1495     $LIBRARY_LIST
1496     $PROGRAM_LIST
1497     $SUBSYSTEM_LIST
1498     fontconfig
1499     incompatible_libav_abi
1500     memalign_hack
1501     memory_poisoning
1502     neon_clobber_test
1503     pic
1504     pod2man
1505     raise_major
1506     thumb
1507     xmm_clobber_test
1508 "
1509
1510 THREADS_LIST="
1511     pthreads
1512     os2threads
1513     w32threads
1514 "
1515
1516 ATOMICS_LIST="
1517     atomics_gcc
1518     atomics_suncc
1519     atomics_win32
1520 "
1521
1522 ARCH_LIST="
1523     aarch64
1524     alpha
1525     arm
1526     avr32
1527     avr32_ap
1528     avr32_uc
1529     bfin
1530     ia64
1531     m68k
1532     mips
1533     mips64
1534     parisc
1535     ppc
1536     ppc64
1537     s390
1538     sh4
1539     sparc
1540     sparc64
1541     tilegx
1542     tilepro
1543     tomi
1544     x86
1545     x86_32
1546     x86_64
1547 "
1548
1549 ARCH_EXT_LIST_ARM="
1550     armv5te
1551     armv6
1552     armv6t2
1553     armv8
1554     neon
1555     vfp
1556     vfpv3
1557     setend
1558 "
1559
1560 ARCH_EXT_LIST_MIPS="
1561     mipsfpu
1562     mips32r2
1563     mipsdspr1
1564     mipsdspr2
1565 "
1566
1567 ARCH_EXT_LIST_X86_SIMD="
1568     amd3dnow
1569     amd3dnowext
1570     avx
1571     avx2
1572     fma3
1573     fma4
1574     mmx
1575     mmxext
1576     sse
1577     sse2
1578     sse3
1579     sse4
1580     sse42
1581     ssse3
1582     xop
1583 "
1584
1585 ARCH_EXT_LIST_PPC="
1586     altivec
1587     dcbzl
1588     ldbrx
1589     ppc4xx
1590     vsx
1591 "
1592
1593 ARCH_EXT_LIST_X86="
1594     $ARCH_EXT_LIST_X86_SIMD
1595     cpunop
1596     i686
1597 "
1598
1599 ARCH_EXT_LIST="
1600     $ARCH_EXT_LIST_ARM
1601     $ARCH_EXT_LIST_PPC
1602     $ARCH_EXT_LIST_X86
1603     $ARCH_EXT_LIST_MIPS
1604     loongson
1605 "
1606
1607 ARCH_FEATURES="
1608     aligned_stack
1609     fast_64bit
1610     fast_clz
1611     fast_cmov
1612     local_aligned_8
1613     local_aligned_16
1614     local_aligned_32
1615     simd_align_16
1616 "
1617
1618 BUILTIN_LIST="
1619     atomic_cas_ptr
1620     atomic_compare_exchange
1621     machine_rw_barrier
1622     MemoryBarrier
1623     mm_empty
1624     rdtsc
1625     sarestart
1626     sync_val_compare_and_swap
1627 "
1628 HAVE_LIST_CMDLINE="
1629     inline_asm
1630     symver
1631     yasm
1632 "
1633
1634 HAVE_LIST_PUB="
1635     bigendian
1636     fast_unaligned
1637     incompatible_libav_abi
1638 "
1639
1640 HEADERS_LIST="
1641     alsa_asoundlib_h
1642     altivec_h
1643     arpa_inet_h
1644     asm_types_h
1645     cdio_paranoia_h
1646     cdio_paranoia_paranoia_h
1647     dev_bktr_ioctl_bt848_h
1648     dev_bktr_ioctl_meteor_h
1649     dev_ic_bt8xx_h
1650     dev_video_bktr_ioctl_bt848_h
1651     dev_video_meteor_ioctl_meteor_h
1652     direct_h
1653     dlfcn_h
1654     dxva_h
1655     ES2_gl_h
1656     gsm_h
1657     io_h
1658     mach_mach_time_h
1659     machine_ioctl_bt848_h
1660     machine_ioctl_meteor_h
1661     malloc_h
1662     openjpeg_1_5_openjpeg_h
1663     OpenGL_gl3_h
1664     poll_h
1665     sndio_h
1666     soundcard_h
1667     sys_mman_h
1668     sys_param_h
1669     sys_resource_h
1670     sys_select_h
1671     sys_soundcard_h
1672     sys_time_h
1673     sys_un_h
1674     sys_videoio_h
1675     termios_h
1676     udplite_h
1677     unistd_h
1678     windows_h
1679     winsock2_h
1680 "
1681
1682 INTRINSICS_LIST="
1683     intrinsics_neon
1684 "
1685
1686 MATH_FUNCS="
1687     atanf
1688     atan2f
1689     cbrt
1690     cbrtf
1691     cosf
1692     exp2
1693     exp2f
1694     expf
1695     isinf
1696     isnan
1697     ldexpf
1698     llrint
1699     llrintf
1700     log2
1701     log2f
1702     log10f
1703     lrint
1704     lrintf
1705     powf
1706     rint
1707     round
1708     roundf
1709     sinf
1710     trunc
1711     truncf
1712 "
1713
1714 SYSTEM_FUNCS="
1715     access
1716     aligned_malloc
1717     clock_gettime
1718     closesocket
1719     CommandLineToArgvW
1720     CoTaskMemFree
1721     CryptGenRandom
1722     dlopen
1723     fcntl
1724     flt_lim
1725     fork
1726     getaddrinfo
1727     gethrtime
1728     getopt
1729     GetProcessAffinityMask
1730     GetProcessMemoryInfo
1731     GetProcessTimes
1732     getrusage
1733     getservbyport
1734     GetSystemTimeAsFileTime
1735     gettimeofday
1736     glob
1737     glXGetProcAddress
1738     gmtime_r
1739     inet_aton
1740     isatty
1741     jack_port_get_latency_range
1742     kbhit
1743     localtime_r
1744     lzo1x_999_compress
1745     mach_absolute_time
1746     MapViewOfFile
1747     memalign
1748     mkstemp
1749     mmap
1750     mprotect
1751     nanosleep
1752     PeekNamedPipe
1753     posix_memalign
1754     pthread_cancel
1755     sched_getaffinity
1756     SetConsoleTextAttribute
1757     setmode
1758     setrlimit
1759     Sleep
1760     strerror_r
1761     sysconf
1762     sysctl
1763     usleep
1764     VirtualAlloc
1765     wglGetProcAddress
1766 "
1767
1768 TOOLCHAIN_FEATURES="
1769     as_dn_directive
1770     as_func
1771     as_object_arch
1772     asm_mod_q
1773     attribute_may_alias
1774     attribute_packed
1775     ebp_available
1776     ebx_available
1777     gnu_as
1778     gnu_windres
1779     ibm_asm
1780     inline_asm_labels
1781     inline_asm_nonlocal_labels
1782     inline_asm_direct_symbol_refs
1783     pragma_deprecated
1784     rsync_contimeout
1785     symver_asm_label
1786     symver_gnu_asm
1787     vfp_args
1788     xform_asm
1789     xmm_clobbers
1790 "
1791
1792 TYPES_LIST="
1793     CONDITION_VARIABLE_Ptr
1794     DXVA_PicParams_HEVC
1795     socklen_t
1796     struct_addrinfo
1797     struct_group_source_req
1798     struct_ip_mreq_source
1799     struct_ipv6_mreq
1800     struct_pollfd
1801     struct_rusage_ru_maxrss
1802     struct_sctp_event_subscribe
1803     struct_sockaddr_in6
1804     struct_sockaddr_sa_len
1805     struct_sockaddr_storage
1806     struct_stat_st_mtim_tv_nsec
1807     struct_v4l2_frmivalenum_discrete
1808 "
1809
1810 HAVE_LIST="
1811     $ARCH_EXT_LIST
1812     $(add_suffix _external $ARCH_EXT_LIST)
1813     $(add_suffix _inline   $ARCH_EXT_LIST)
1814     $ARCH_FEATURES
1815     $ATOMICS_LIST
1816     $BUILTIN_LIST
1817     $HAVE_LIST_CMDLINE
1818     $HAVE_LIST_PUB
1819     $HEADERS_LIST
1820     $INTRINSICS_LIST
1821     $MATH_FUNCS
1822     $SYSTEM_FUNCS
1823     $THREADS_LIST
1824     $TOOLCHAIN_FEATURES
1825     $TYPES_LIST
1826     atomics_native
1827     dos_paths
1828     dxva2api_cobj
1829     dxva2_lib
1830     libc_msvcrt
1831     libdc1394_1
1832     libdc1394_2
1833     makeinfo
1834     makeinfo_html
1835     perl
1836     pod2man
1837     sdl
1838     section_data_rel_ro
1839     texi2html
1840     threads
1841     vaapi_x11
1842     vdpau_x11
1843     xlib
1844 "
1845
1846 # options emitted with CONFIG_ prefix but not available on the command line
1847 CONFIG_EXTRA="
1848     aandcttables
1849     ac3dsp
1850     audio_frame_queue
1851     audiodsp
1852     blockdsp
1853     bswapdsp
1854     cabac
1855     dvprofile
1856     exif
1857     faandct
1858     faanidct
1859     fdctdsp
1860     fmtconvert
1861     frame_thread_encoder
1862     gcrypt
1863     golomb
1864     gplv3
1865     h263dsp
1866     h264chroma
1867     h264dsp
1868     h264pred
1869     h264qpel
1870     hpeldsp
1871     huffman
1872     huffyuvdsp
1873     huffyuvencdsp
1874     idctdsp
1875     iirfilter
1876     imdct15
1877     intrax8
1878     lgplv3
1879     llauddsp
1880     llviddsp
1881     lpc
1882     me_cmp
1883     mpeg_er
1884     mpegaudio
1885     mpegaudiodsp
1886     mpegvideo
1887     mpegvideoenc
1888     nettle
1889     pixblockdsp
1890     qpeldsp
1891     qsv
1892     rangecoder
1893     riffdec
1894     riffenc
1895     rtpdec
1896     rtpenc_chain
1897     sinewin
1898     startcode
1899     tpeldsp
1900     videodsp
1901     vp3dsp
1902     wma_freqs
1903 "
1904
1905 CMDLINE_SELECT="
1906     $ARCH_EXT_LIST
1907     $CONFIG_LIST
1908     $HAVE_LIST_CMDLINE
1909     $THREADS_LIST
1910     asm
1911     cross_compile
1912     debug
1913     extra_warnings
1914     logging
1915     lto
1916     optimizations
1917     rpath
1918     stripping
1919 "
1920
1921 PATHS_LIST="
1922     bindir
1923     datadir
1924     docdir
1925     incdir
1926     libdir
1927     mandir
1928     prefix
1929     shlibdir
1930 "
1931
1932 CMDLINE_SET="
1933     $PATHS_LIST
1934     ar
1935     arch
1936     as
1937     assert_level
1938     build_suffix
1939     cc
1940     cpu
1941     cross_prefix
1942     cxx
1943     dep_cc
1944     doxygen
1945     extra_version
1946     gas
1947     host_cc
1948     host_cflags
1949     host_ld
1950     host_ldflags
1951     host_libs
1952     host_os
1953     install
1954     ld
1955     logfile
1956     malloc_prefix
1957     nm
1958     optflags
1959     pkg_config
1960     pkg_config_flags
1961     progs_suffix
1962     random_seed
1963     ranlib
1964     samples
1965     strip
1966     sws_max_filter_size
1967     sysinclude
1968     sysroot
1969     target_exec
1970     target_os
1971     target_path
1972     target_samples
1973     tempprefix
1974     toolchain
1975     valgrind
1976     yasmexe
1977 "
1978
1979 CMDLINE_APPEND="
1980     extra_cflags
1981     extra_cxxflags
1982     host_cppflags
1983 "
1984
1985 # code dependency declarations
1986
1987 # architecture extensions
1988
1989 armv5te_deps="arm"
1990 armv6_deps="arm"
1991 armv6t2_deps="arm"
1992 armv8_deps="aarch64"
1993 neon_deps_any="aarch64 arm"
1994 intrinsics_neon_deps="neon"
1995 vfp_deps_any="aarch64 arm"
1996 vfpv3_deps="vfp"
1997 setend_deps="arm"
1998
1999 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2000
2001 mipsfpu_deps="mips"
2002 mipsdspr1_deps="mips"
2003 mipsdspr2_deps="mips"
2004
2005 altivec_deps="ppc"
2006 ppc4xx_deps="ppc"
2007 vsx_deps="ppc"
2008
2009 cpunop_deps="i686"
2010 x86_64_select="i686"
2011 x86_64_suggest="fast_cmov"
2012
2013 amd3dnow_deps="mmx"
2014 amd3dnowext_deps="amd3dnow"
2015 i686_deps="x86"
2016 mmx_deps="x86"
2017 mmxext_deps="mmx"
2018 sse_deps="mmxext"
2019 sse2_deps="sse"
2020 sse3_deps="sse2"
2021 ssse3_deps="sse3"
2022 sse4_deps="ssse3"
2023 sse42_deps="sse4"
2024 avx_deps="sse42"
2025 xop_deps="avx"
2026 fma3_deps="avx"
2027 fma4_deps="avx"
2028 avx2_deps="avx"
2029
2030 mmx_external_deps="yasm"
2031 mmx_inline_deps="inline_asm"
2032 mmx_suggest="mmx_external mmx_inline"
2033
2034 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2035     eval dep=\$${ext}_deps
2036     eval ${ext}_external_deps='"${dep}_external"'
2037     eval ${ext}_inline_deps='"${dep}_inline"'
2038     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2039 done
2040
2041 aligned_stack_if_any="aarch64 ppc x86"
2042 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2043 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2044 fast_unaligned_if_any="aarch64 ppc x86"
2045 simd_align_16_if_any="altivec neon sse"
2046
2047 # system capabilities
2048
2049 symver_if_any="symver_asm_label symver_gnu_asm"
2050
2051 # threading support
2052 atomics_gcc_if_any="sync_val_compare_and_swap atomic_compare_exchange"
2053 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2054 atomics_win32_if="MemoryBarrier"
2055 atomics_native_if_any="$ATOMICS_LIST"
2056 w32threads_deps="atomics_native"
2057 threads_if_any="$THREADS_LIST"
2058
2059 # subsystems
2060 dct_select="rdft"
2061 error_resilience_select="me_cmp"
2062 faandct_deps="faan fdctdsp"
2063 faanidct_deps="faan idctdsp"
2064 frame_thread_encoder_deps="encoders threads"
2065 intrax8_select="error_resilience"
2066 mdct_select="fft"
2067 rdft_select="fft"
2068 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2069 mpeg_er_select="error_resilience"
2070 mpegaudio_select="mpegaudiodsp"
2071 mpegaudiodsp_select="dct"
2072 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp videodsp"
2073 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
2074
2075 # decoders / encoders
2076 aac_decoder_select="imdct15 mdct sinewin"
2077 aac_encoder_select="audio_frame_queue iirfilter mdct sinewin"
2078 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2079 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2080 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2081 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2082 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2083 aic_decoder_select="golomb idctdsp"
2084 alac_encoder_select="lpc"
2085 als_decoder_select="bswapdsp"
2086 amrnb_decoder_select="lsp"
2087 amrwb_decoder_select="lsp"
2088 amv_decoder_select="sp5x_decoder exif"
2089 amv_encoder_select="aandcttables mpegvideoenc"
2090 ape_decoder_select="bswapdsp llauddsp"
2091 apng_decoder_select="zlib"
2092 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2093 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2094 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2095 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2096 atrac1_decoder_select="mdct sinewin"
2097 atrac3_decoder_select="mdct"
2098 atrac3p_decoder_select="mdct sinewin"
2099 avrn_decoder_select="exif"
2100 bink_decoder_select="blockdsp hpeldsp"
2101 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2102 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2103 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2104 cllc_decoder_select="bswapdsp"
2105 comfortnoise_encoder_select="lpc"
2106 cook_decoder_select="audiodsp mdct sinewin"
2107 cscd_decoder_select="lzo"
2108 cscd_decoder_suggest="zlib"
2109 dca_decoder_select="fmtconvert mdct"
2110 dirac_decoder_select="dwt golomb videodsp mpegvideoenc"
2111 dnxhd_decoder_select="blockdsp idctdsp"
2112 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2113 dvvideo_decoder_select="dvprofile idctdsp"
2114 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2115 dxa_decoder_select="zlib"
2116 eac3_decoder_select="ac3_decoder"
2117 eac3_encoder_select="ac3_encoder"
2118 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2119 eatgq_decoder_select="aandcttables"
2120 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpeg1video_decoder"
2121 exr_decoder_select="zlib"
2122 ffv1_decoder_select="golomb rangecoder"
2123 ffv1_encoder_select="rangecoder"
2124 ffvhuff_decoder_select="huffyuv_decoder"
2125 ffvhuff_encoder_select="huffyuv_encoder"
2126 fic_decoder_select="golomb"
2127 flac_decoder_select="golomb"
2128 flac_encoder_select="bswapdsp golomb lpc"
2129 flashsv_decoder_select="zlib"
2130 flashsv_encoder_select="zlib"
2131 flashsv2_encoder_select="zlib"
2132 flashsv2_decoder_select="zlib"
2133 flv_decoder_select="h263_decoder"
2134 flv_encoder_select="h263_encoder"
2135 fourxm_decoder_select="blockdsp bswapdsp"
2136 fraps_decoder_select="bswapdsp huffman"
2137 g2m_decoder_select="blockdsp idctdsp zlib"
2138 g729_decoder_select="audiodsp"
2139 h261_decoder_select="mpeg_er mpegvideo"
2140 h261_encoder_select="aandcttables mpegvideoenc"
2141 h263_decoder_select="error_resilience h263_parser h263dsp mpeg_er mpegvideo qpeldsp"
2142 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2143 h263i_decoder_select="h263_decoder"
2144 h263p_encoder_select="h263_encoder"
2145 h264_decoder_select="cabac golomb h264chroma h264dsp h264pred h264qpel startcode videodsp"
2146 h264_decoder_suggest="error_resilience"
2147 h264_qsv_decoder_deps="libmfx"
2148 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsv h264_qsv_hwaccel"
2149 hevc_decoder_select="bswapdsp cabac golomb videodsp"
2150 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2151 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llviddsp"
2152 iac_decoder_select="imc_decoder"
2153 imc_decoder_select="bswapdsp fft mdct sinewin"
2154 indeo3_decoder_select="hpeldsp"
2155 interplay_video_decoder_select="hpeldsp"
2156 jpegls_decoder_select="golomb mjpeg_decoder"
2157 jpegls_encoder_select="golomb"
2158 jv_decoder_select="blockdsp"
2159 lagarith_decoder_select="huffyuvdsp"
2160 ljpeg_encoder_select="aandcttables idctdsp"
2161 loco_decoder_select="golomb"
2162 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2163 metasound_decoder_select="lsp mdct sinewin"
2164 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2165 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp"
2166 mjpeg_encoder_select="aandcttables mpegvideoenc"
2167 mjpegb_decoder_select="mjpeg_decoder"
2168 mlp_decoder_select="mlp_parser"
2169 motionpixels_decoder_select="bswapdsp"
2170 mp1_decoder_select="mpegaudio"
2171 mp1float_decoder_select="mpegaudio"
2172 mp2_decoder_select="mpegaudio"
2173 mp2float_decoder_select="mpegaudio"
2174 mp3_decoder_select="mpegaudio"
2175 mp3adu_decoder_select="mpegaudio"
2176 mp3adufloat_decoder_select="mpegaudio"
2177 mp3float_decoder_select="mpegaudio"
2178 mp3on4_decoder_select="mpegaudio"
2179 mp3on4float_decoder_select="mpegaudio"
2180 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2181 mpc8_decoder_select="mpegaudiodsp"
2182 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
2183 mpeg_xvmc_decoder_select="mpeg2video_decoder"
2184 mpegvideo_decoder_select="error_resilience mpeg_er mpegvideo"
2185 mpeg1video_decoder_select="error_resilience mpeg_er mpegvideo"
2186 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2187 mpeg2video_decoder_select="error_resilience mpeg_er mpegvideo"
2188 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2189 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2190 mpeg4_encoder_select="h263_encoder"
2191 msmpeg4v1_decoder_select="h263_decoder"
2192 msmpeg4v2_decoder_select="h263_decoder"
2193 msmpeg4v2_encoder_select="h263_encoder"
2194 msmpeg4v3_decoder_select="h263_decoder"
2195 msmpeg4v3_encoder_select="h263_encoder"
2196 mss2_decoder_select="error_resilience mpeg_er qpeldsp vc1_decoder"
2197 mxpeg_decoder_select="mjpeg_decoder"
2198 nellymoser_decoder_select="mdct sinewin"
2199 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2200 nuv_decoder_select="idctdsp lzo"
2201 on2avc_decoder_select="mdct"
2202 opus_decoder_deps="swresample"
2203 opus_decoder_select="imdct15"
2204 png_decoder_select="zlib"
2205 png_encoder_select="huffyuvencdsp zlib"
2206 prores_decoder_select="blockdsp idctdsp"
2207 prores_encoder_select="fdctdsp"
2208 qcelp_decoder_select="lsp"
2209 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2210 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2211 ra_144_decoder_select="audiodsp"
2212 ralf_decoder_select="golomb"
2213 rawvideo_decoder_select="bswapdsp"
2214 rtjpeg_decoder_select="me_cmp"
2215 rv10_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2216 rv10_encoder_select="h263_encoder"
2217 rv20_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2218 rv20_encoder_select="h263_encoder"
2219 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo videodsp"
2220 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo videodsp"
2221 shorten_decoder_select="golomb"
2222 sipr_decoder_select="lsp"
2223 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2224 snow_encoder_select="aandcttables dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2225 sonic_decoder_select="golomb rangecoder"
2226 sonic_encoder_select="golomb rangecoder"
2227 sonic_ls_encoder_select="golomb rangecoder"
2228 sp5x_decoder_select="mjpeg_decoder"
2229 svq1_decoder_select="hpeldsp"
2230 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2231 svq3_decoder_select="h264_decoder hpeldsp tpeldsp"
2232 svq3_decoder_suggest="zlib"
2233 tak_decoder_select="audiodsp"
2234 tdsc_decoder_select="zlib mjpeg_decoder"
2235 theora_decoder_select="vp3_decoder"
2236 thp_decoder_select="mjpeg_decoder"
2237 tiff_decoder_suggest="zlib lzma"
2238 tiff_encoder_suggest="zlib"
2239 truehd_decoder_select="mlp_parser"
2240 truemotion2_decoder_select="bswapdsp"
2241 truespeech_decoder_select="bswapdsp"
2242 tscc_decoder_select="zlib"
2243 twinvq_decoder_select="mdct lsp sinewin"
2244 utvideo_decoder_select="bswapdsp"
2245 utvideo_encoder_select="bswapdsp huffman huffyuvencdsp"
2246 vble_decoder_select="huffyuvdsp"
2247 vc1_decoder_select="blockdsp error_resilience h263_decoder h264chroma h264qpel intrax8 mpeg_er qpeldsp startcode"
2248 vc1image_decoder_select="vc1_decoder"
2249 vorbis_decoder_select="mdct"
2250 vorbis_encoder_select="mdct"
2251 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2252 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp"
2253 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp"
2254 vp6a_decoder_select="vp6_decoder"
2255 vp6f_decoder_select="vp6_decoder"
2256 vp7_decoder_select="h264pred videodsp"
2257 vp8_decoder_select="h264pred videodsp"
2258 vp9_decoder_select="videodsp vp9_parser"
2259 webp_decoder_select="vp8_decoder"
2260 wmalossless_decoder_select="llauddsp"
2261 wmapro_decoder_select="mdct sinewin wma_freqs"
2262 wmav1_decoder_select="mdct sinewin wma_freqs"
2263 wmav1_encoder_select="mdct sinewin wma_freqs"
2264 wmav2_decoder_select="mdct sinewin wma_freqs"
2265 wmav2_encoder_select="mdct sinewin wma_freqs"
2266 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2267 wmv1_decoder_select="h263_decoder"
2268 wmv1_encoder_select="h263_encoder"
2269 wmv2_decoder_select="blockdsp h263_decoder idctdsp intrax8 videodsp"
2270 wmv2_encoder_select="h263_encoder"
2271 wmv3_decoder_select="vc1_decoder"
2272 wmv3image_decoder_select="wmv3_decoder"
2273 zerocodec_decoder_select="zlib"
2274 zlib_decoder_select="zlib"
2275 zlib_encoder_select="zlib"
2276 zmbv_decoder_select="zlib"
2277 zmbv_encoder_select="zlib"
2278
2279 # hardware accelerators
2280 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2281 dxva2_deps="dxva2api_h"
2282 vaapi_deps="va_va_h"
2283 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
2284 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
2285 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
2286 xvmc_deps="X11_extensions_XvMClib_h"
2287
2288 h263_vaapi_hwaccel_deps="vaapi"
2289 h263_vaapi_hwaccel_select="h263_decoder"
2290 h263_vdpau_hwaccel_deps="vdpau"
2291 h263_vdpau_hwaccel_select="h263_decoder"
2292 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2293 h264_dxva2_hwaccel_deps="dxva2"
2294 h264_dxva2_hwaccel_select="h264_decoder"
2295 h264_qsv_hwaccel_deps="libmfx"
2296 h264_vaapi_hwaccel_deps="vaapi"
2297 h264_vaapi_hwaccel_select="h264_decoder"
2298 h264_vda_decoder_deps="vda"
2299 h264_vda_decoder_select="h264_decoder"
2300 h264_vda_hwaccel_deps="vda"
2301 h264_vda_hwaccel_select="h264_decoder"
2302 h264_vda_old_hwaccel_deps="vda"
2303 h264_vda_old_hwaccel_select="h264_decoder"
2304 h264_vdpau_decoder_deps="vdpau"
2305 h264_vdpau_decoder_select="h264_decoder"
2306 h264_vdpau_hwaccel_deps="vdpau"
2307 h264_vdpau_hwaccel_select="h264_decoder"
2308 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2309 hevc_dxva2_hwaccel_select="hevc_decoder"
2310 mpeg_vdpau_decoder_deps="vdpau"
2311 mpeg_vdpau_decoder_select="mpeg2video_decoder"
2312 mpeg_xvmc_hwaccel_deps="xvmc"
2313 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2314 mpeg1_vdpau_decoder_deps="vdpau"
2315 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
2316 mpeg1_vdpau_hwaccel_deps="vdpau"
2317 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2318 mpeg1_xvmc_hwaccel_deps="xvmc"
2319 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2320 mpeg2_crystalhd_decoder_select="crystalhd"
2321 mpeg2_dxva2_hwaccel_deps="dxva2"
2322 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2323 mpeg2_vaapi_hwaccel_deps="vaapi"
2324 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2325 mpeg2_vdpau_hwaccel_deps="vdpau"
2326 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2327 mpeg2_xvmc_hwaccel_deps="xvmc"
2328 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2329 mpeg4_crystalhd_decoder_select="crystalhd"
2330 mpeg4_vaapi_hwaccel_deps="vaapi"
2331 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2332 mpeg4_vdpau_decoder_deps="vdpau"
2333 mpeg4_vdpau_decoder_select="mpeg4_decoder"
2334 mpeg4_vdpau_hwaccel_deps="vdpau"
2335 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2336 msmpeg4_crystalhd_decoder_select="crystalhd"
2337 vc1_crystalhd_decoder_select="crystalhd"
2338 vc1_dxva2_hwaccel_deps="dxva2"
2339 vc1_dxva2_hwaccel_select="vc1_decoder"
2340 vc1_vaapi_hwaccel_deps="vaapi"
2341 vc1_vaapi_hwaccel_select="vc1_decoder"
2342 vc1_vdpau_decoder_deps="vdpau"
2343 vc1_vdpau_decoder_select="vc1_decoder"
2344 vc1_vdpau_hwaccel_deps="vdpau"
2345 vc1_vdpau_hwaccel_select="vc1_decoder"
2346 wmv3_crystalhd_decoder_select="crystalhd"
2347 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2348 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2349 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
2350 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2351
2352 # parsers
2353 h264_parser_select="h264_decoder"
2354 hevc_parser_select="hevc_decoder"
2355 mpegvideo_parser_select="mpegvideo"
2356 mpeg4video_parser_select="error_resilience h263dsp mpeg_er mpegvideo qpeldsp"
2357 vc1_parser_select="mpegvideo startcode vc1_decoder"
2358
2359 # external libraries
2360 libaacplus_encoder_deps="libaacplus"
2361 libcelt_decoder_deps="libcelt"
2362 libfaac_encoder_deps="libfaac"
2363 libfaac_encoder_select="audio_frame_queue"
2364 libfdk_aac_decoder_deps="libfdk_aac"
2365 libfdk_aac_encoder_deps="libfdk_aac"
2366 libfdk_aac_encoder_select="audio_frame_queue"
2367 libgme_demuxer_deps="libgme"
2368 libgsm_decoder_deps="libgsm"
2369 libgsm_encoder_deps="libgsm"
2370 libgsm_ms_decoder_deps="libgsm"
2371 libgsm_ms_encoder_deps="libgsm"
2372 libilbc_decoder_deps="libilbc"
2373 libilbc_encoder_deps="libilbc"
2374 libmodplug_demuxer_deps="libmodplug"
2375 libmp3lame_encoder_deps="libmp3lame"
2376 libmp3lame_encoder_select="audio_frame_queue"
2377 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2378 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2379 libopencore_amrnb_encoder_select="audio_frame_queue"
2380 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2381 libopenh264_encoder_deps="libopenh264"
2382 libopenjpeg_decoder_deps="libopenjpeg"
2383 libopenjpeg_encoder_deps="libopenjpeg"
2384 libopus_decoder_deps="libopus"
2385 libopus_encoder_deps="libopus"
2386 libopus_encoder_select="audio_frame_queue"
2387 libquvi_demuxer_deps="libquvi"
2388 libschroedinger_decoder_deps="libschroedinger"
2389 libschroedinger_encoder_deps="libschroedinger"
2390 libshine_encoder_deps="libshine"
2391 libshine_encoder_select="audio_frame_queue"
2392 libspeex_decoder_deps="libspeex"
2393 libspeex_encoder_deps="libspeex"
2394 libspeex_encoder_select="audio_frame_queue"
2395 libstagefright_h264_decoder_deps="libstagefright_h264"
2396 libtheora_encoder_deps="libtheora"
2397 libtwolame_encoder_deps="libtwolame"
2398 libvo_aacenc_encoder_deps="libvo_aacenc"
2399 libvo_aacenc_encoder_select="audio_frame_queue"
2400 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2401 libvorbis_decoder_deps="libvorbis"
2402 libvorbis_encoder_deps="libvorbis"
2403 libvorbis_encoder_select="audio_frame_queue"
2404 libvpx_vp8_decoder_deps="libvpx"
2405 libvpx_vp8_encoder_deps="libvpx"
2406 libvpx_vp9_decoder_deps="libvpx"
2407 libvpx_vp9_encoder_deps="libvpx"
2408 libwavpack_encoder_deps="libwavpack"
2409 libwebp_encoder_deps="libwebp"
2410 libx264_encoder_deps="libx264"
2411 libx264rgb_encoder_deps="libx264"
2412 libx264rgb_encoder_select="libx264_encoder"
2413 libx265_encoder_deps="libx265"
2414 libxavs_encoder_deps="libxavs"
2415 libxvid_encoder_deps="libxvid"
2416 libutvideo_decoder_deps="libutvideo"
2417 libutvideo_encoder_deps="libutvideo"
2418 libzvbi_teletext_decoder_deps="libzvbi"
2419 nvenc_encoder_deps="nvenc"
2420
2421 # demuxers / muxers
2422 ac3_demuxer_select="ac3_parser"
2423 asf_demuxer_select="riffdec"
2424 asf_muxer_select="riffenc"
2425 asf_stream_muxer_select="asf_muxer"
2426 avi_demuxer_select="riffdec exif"
2427 avi_muxer_select="riffenc"
2428 avisynth_demuxer_deps="avisynth"
2429 avisynth_demuxer_select="riffdec"
2430 caf_demuxer_select="riffdec"
2431 dash_muxer_select="mp4_muxer"
2432 dirac_demuxer_select="dirac_parser"
2433 dts_demuxer_select="dca_parser"
2434 dtshd_demuxer_select="dca_parser"
2435 dv_demuxer_select="dvprofile"
2436 dv_muxer_select="dvprofile"
2437 dxa_demuxer_select="riffdec"
2438 eac3_demuxer_select="ac3_parser"
2439 f4v_muxer_select="mov_muxer"
2440 flac_demuxer_select="flac_parser"
2441 hds_muxer_select="flv_muxer"
2442 hls_muxer_select="mpegts_muxer"
2443 image2_alias_pix_demuxer_select="image2_demuxer"
2444 image2_brender_pix_demuxer_select="image2_demuxer"
2445 ipod_muxer_select="mov_muxer"
2446 ismv_muxer_select="mov_muxer"
2447 libnut_demuxer_deps="libnut"
2448 libnut_muxer_deps="libnut"
2449 matroska_audio_muxer_select="matroska_muxer"
2450 matroska_demuxer_select="riffdec"
2451 matroska_demuxer_suggest="bzlib lzo zlib"
2452 matroska_muxer_select="riffenc"
2453 mmf_muxer_select="riffenc"
2454 mov_demuxer_select="riffdec"
2455 mov_demuxer_suggest="zlib"
2456 mov_muxer_select="riffenc rtpenc_chain"
2457 mp3_demuxer_select="mpegaudio_parser"
2458 mp4_muxer_select="mov_muxer"
2459 mpegts_muxer_select="adts_muxer latm_muxer"
2460 mpegtsraw_demuxer_select="mpegts_demuxer"
2461 mxf_d10_muxer_select="mxf_muxer"
2462 mxf_opatom_muxer_select="mxf_muxer"
2463 nut_muxer_select="riffenc"
2464 nuv_demuxer_select="riffdec"
2465 oga_muxer_select="ogg_muxer"
2466 ogg_demuxer_select="golomb"
2467 opus_muxer_select="ogg_muxer"
2468 psp_muxer_select="mov_muxer"
2469 rtp_demuxer_select="sdp_demuxer"
2470 rtpdec_select="asf_demuxer rm_demuxer rtp_protocol mpegts_demuxer mov_demuxer"
2471 rtsp_demuxer_select="http_protocol rtpdec"
2472 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2473 sap_demuxer_select="sdp_demuxer"
2474 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2475 sdp_demuxer_select="rtpdec"
2476 smoothstreaming_muxer_select="ismv_muxer"
2477 spdif_muxer_select="aac_parser"
2478 spx_muxer_select="ogg_muxer"
2479 tak_demuxer_select="tak_parser"
2480 tg2_muxer_select="mov_muxer"
2481 tgp_muxer_select="mov_muxer"
2482 vobsub_demuxer_select="mpegps_demuxer"
2483 w64_demuxer_select="wav_demuxer"
2484 w64_muxer_select="wav_muxer"
2485 wav_demuxer_select="riffdec"
2486 wav_muxer_select="riffenc"
2487 webm_muxer_select="riffenc"
2488 wtv_demuxer_select="riffdec"
2489 wtv_muxer_select="riffenc"
2490 xmv_demuxer_select="riffdec"
2491 xwma_demuxer_select="riffdec"
2492
2493 # indevs / outdevs
2494 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2495 alsa_outdev_deps="alsa_asoundlib_h"
2496 avfoundation_indev_extralibs="-framework CoreVideo -framework Foundation -framework AVFoundation -framework CoreMedia"
2497 avfoundation_indev_select="avfoundation"
2498 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2499 caca_outdev_deps="libcaca"
2500 decklink_outdev_deps="decklink pthreads"
2501 decklink_outdev_extralibs="-lstdc++"
2502 decklink_indev_deps="decklink pthreads"
2503 decklink_indev_extralibs="-lstdc++"
2504 dshow_indev_deps="IBaseFilter"
2505 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32"
2506 dv1394_indev_deps="dv1394"
2507 dv1394_indev_select="dv_demuxer"
2508 fbdev_indev_deps="linux_fb_h"
2509 fbdev_outdev_deps="linux_fb_h"
2510 gdigrab_indev_deps="CreateDIBSection"
2511 gdigrab_indev_extralibs="-lgdi32"
2512 gdigrab_indev_select="bmp_decoder"
2513 iec61883_indev_deps="libiec61883"
2514 jack_indev_deps="jack_jack_h sem_timedwait"
2515 lavfi_indev_deps="avfilter"
2516 libcdio_indev_deps="libcdio"
2517 libdc1394_indev_deps="libdc1394"
2518 libv4l2_indev_deps="libv4l2"
2519 openal_indev_deps="openal"
2520 opengl_outdev_deps="opengl"
2521 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2522 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2523 pulse_indev_deps="libpulse"
2524 pulse_outdev_deps="libpulse"
2525 qtkit_indev_extralibs="-framework QTKit -framework Foundation -framework QuartzCore"
2526 qtkit_indev_select="qtkit"
2527 sdl_outdev_deps="sdl"
2528 sndio_indev_deps="sndio_h"
2529 sndio_outdev_deps="sndio_h"
2530 v4l_indev_deps="linux_videodev_h"
2531 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2532 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
2533 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2534 vfwcap_indev_extralibs="-lavicap32"
2535 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
2536 xv_outdev_extralibs="-lXv -lX11 -lXext"
2537 x11grab_indev_deps="x11grab"
2538 x11grab_xcb_indev_deps="libxcb"
2539
2540 # protocols
2541 bluray_protocol_deps="libbluray"
2542 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2543 ffrtmpcrypt_protocol_deps_any="gcrypt nettle openssl"
2544 ffrtmpcrypt_protocol_select="tcp_protocol"
2545 ffrtmphttp_protocol_deps="!librtmp_protocol"
2546 ffrtmphttp_protocol_select="http_protocol"
2547 ftp_protocol_select="tcp_protocol"
2548 gopher_protocol_select="network"
2549 http_protocol_select="tcp_protocol"
2550 httpproxy_protocol_select="tcp_protocol"
2551 https_protocol_select="tls_protocol"
2552 icecast_protocol_select="http_protocol"
2553 librtmp_protocol_deps="librtmp"
2554 librtmpe_protocol_deps="librtmp"
2555 librtmps_protocol_deps="librtmp"
2556 librtmpt_protocol_deps="librtmp"
2557 librtmpte_protocol_deps="librtmp"
2558 libsmbclient_protocol_deps="libsmbclient gplv3"
2559 libssh_protocol_deps="libssh"
2560 mmsh_protocol_select="http_protocol"
2561 mmst_protocol_select="network"
2562 rtmp_protocol_deps="!librtmp_protocol"
2563 rtmp_protocol_select="tcp_protocol"
2564 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2565 rtmps_protocol_deps="!librtmp_protocol"
2566 rtmps_protocol_select="tls_protocol"
2567 rtmpt_protocol_select="ffrtmphttp_protocol"
2568 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2569 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2570 rtp_protocol_select="udp_protocol"
2571 sctp_protocol_deps="struct_sctp_event_subscribe"
2572 sctp_protocol_select="network"
2573 srtp_protocol_select="rtp_protocol"
2574 tcp_protocol_select="network"
2575 tls_protocol_deps_any="openssl gnutls"
2576 tls_protocol_select="tcp_protocol"
2577 udp_protocol_select="network"
2578 udplite_protocol_select="network"
2579 unix_protocol_deps="sys_un_h"
2580 unix_protocol_select="network"
2581
2582 # filters
2583 amovie_filter_deps="avcodec avformat"
2584 aresample_filter_deps="swresample"
2585 ass_filter_deps="libass"
2586 asyncts_filter_deps="avresample"
2587 atempo_filter_deps="avcodec"
2588 atempo_filter_select="rdft"
2589 azmq_filter_deps="libzmq"
2590 blackframe_filter_deps="gpl"
2591 boxblur_filter_deps="gpl"
2592 bs2b_filter_deps="libbs2b"
2593 colormatrix_filter_deps="gpl"
2594 cropdetect_filter_deps="gpl"
2595 delogo_filter_deps="gpl"
2596 deshake_filter_select="pixelutils"
2597 drawtext_filter_deps="libfreetype"
2598 ebur128_filter_deps="gpl"
2599 eq_filter_deps="gpl"
2600 fftfilt_filter_deps="avcodec"
2601 fftfilt_filter_select="rdft"
2602 flite_filter_deps="libflite"
2603 frei0r_filter_deps="frei0r dlopen"
2604 frei0r_src_filter_deps="frei0r dlopen"
2605 fspp_filter_deps="gpl"
2606 geq_filter_deps="gpl"
2607 histeq_filter_deps="gpl"
2608 hqdn3d_filter_deps="gpl"
2609 interlace_filter_deps="gpl"
2610 kerndeint_filter_deps="gpl"
2611 ladspa_filter_deps="ladspa dlopen"
2612 mcdeint_filter_deps="avcodec gpl"
2613 movie_filter_deps="avcodec avformat"
2614 mpdecimate_filter_deps="gpl"
2615 mpdecimate_filter_select="pixelutils"
2616 mptestsrc_filter_deps="gpl"
2617 negate_filter_deps="lut_filter"
2618 perspective_filter_deps="gpl"
2619 pp7_filter_deps="gpl"
2620 ocv_filter_deps="libopencv"
2621 owdenoise_filter_deps="gpl"
2622 pan_filter_deps="swresample"
2623 phase_filter_deps="gpl"
2624 pp_filter_deps="gpl postproc"
2625 pullup_filter_deps="gpl"
2626 removelogo_filter_deps="avcodec avformat swscale"
2627 repeatfields_filter_deps="gpl"
2628 resample_filter_deps="avresample"
2629 sab_filter_deps="gpl swscale"
2630 scale_filter_deps="swscale"
2631 select_filter_select="pixelutils"
2632 smartblur_filter_deps="gpl swscale"
2633 showspectrum_filter_deps="avcodec"
2634 showspectrum_filter_select="rdft"
2635 spp_filter_deps="gpl avcodec"
2636 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
2637 stereo3d_filter_deps="gpl"
2638 subtitles_filter_deps="avformat avcodec libass"
2639 super2xsai_filter_deps="gpl"
2640 tinterlace_filter_deps="gpl"
2641 vidstabdetect_filter_deps="libvidstab"
2642 vidstabtransform_filter_deps="libvidstab"
2643 pixfmts_super2xsai_test_deps="super2xsai_filter"
2644 tinterlace_merge_test_deps="tinterlace_filter"
2645 tinterlace_pad_test_deps="tinterlace_filter"
2646 uspp_filter_deps="gpl avcodec"
2647 zmq_filter_deps="libzmq"
2648 zoompan_filter_deps="swscale"
2649
2650 # examples
2651 avio_reading="avformat avcodec avutil"
2652 avcodec_example_deps="avcodec avutil"
2653 decoding_encoding_example_deps="avcodec avformat avutil"
2654 demuxing_decoding_example_deps="avcodec avformat avutil"
2655 extract_mvs_example_deps="avcodec avformat avutil"
2656 filter_audio_example_deps="avfilter avutil"
2657 filtering_audio_example_deps="avfilter avcodec avformat avutil"
2658 filtering_video_example_deps="avfilter avcodec avformat avutil"
2659 metadata_example_deps="avformat avutil"
2660 muxing_example_deps="avcodec avformat avutil swscale"
2661 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder vaapi_x11"
2662 remuxing_example_deps="avcodec avformat avutil"
2663 resampling_audio_example_deps="avutil swresample"
2664 scaling_video_example_deps="avutil swscale"
2665 transcode_aac_example_deps="avcodec avformat swresample"
2666 transcoding_example_deps="avfilter avcodec avformat avutil"
2667
2668 # libraries, in linking order
2669 avcodec_deps="avutil"
2670 avdevice_deps="avformat avcodec avutil"
2671 avfilter_deps="avutil"
2672 avformat_deps="avcodec avutil"
2673 avresample_deps="avutil"
2674 postproc_deps="avutil gpl"
2675 swresample_deps="avutil"
2676 swscale_deps="avutil"
2677
2678 # programs
2679 ffmpeg_deps="avcodec avfilter avformat swresample"
2680 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
2681                null_filter
2682                setpts_filter trim_filter"
2683 ffplay_deps="avcodec avformat swscale swresample sdl"
2684 ffplay_libs='$sdl_libs'
2685 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
2686 ffprobe_deps="avcodec avformat"
2687 ffserver_deps="avformat fork sarestart"
2688 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
2689
2690 # documentation
2691 podpages_deps="perl"
2692 manpages_deps="perl pod2man"
2693 htmlpages_deps="perl"
2694 htmlpages_deps_any="makeinfo_html texi2html"
2695 txtpages_deps="perl makeinfo"
2696 doc_deps_any="manpages htmlpages podpages txtpages"
2697
2698 # default parameters
2699
2700 logfile="config.log"
2701
2702 # installation paths
2703 prefix_default="/usr/local"
2704 bindir_default='${prefix}/bin'
2705 datadir_default='${prefix}/share/ffmpeg'
2706 docdir_default='${prefix}/share/doc/ffmpeg'
2707 incdir_default='${prefix}/include'
2708 libdir_default='${prefix}/lib'
2709 mandir_default='${prefix}/share/man'
2710
2711 # toolchain
2712 ar_default="ar"
2713 cc_default="gcc"
2714 cxx_default="g++"
2715 host_cc_default="gcc"
2716 cp_f="cp -f"
2717 doxygen_default="doxygen"
2718 install="install"
2719 ln_s="ln -s -f"
2720 nm_default="nm -g"
2721 objformat="elf"
2722 pkg_config_default=pkg-config
2723 if ranlib 2>&1 | grep -q "\-D "; then
2724     ranlib_default="ranlib -D"
2725 else
2726     ranlib_default="ranlib"
2727 fi
2728 strip_default="strip"
2729 yasmexe_default="yasm"
2730 windres_default="windres"
2731
2732 # OS
2733 target_os_default=$(tolower $(uname -s))
2734 host_os=$target_os_default
2735
2736 # machine
2737 if test "$target_os_default" = aix; then
2738     arch_default=$(uname -p)
2739     strip_default="strip -X32_64"
2740 else
2741     arch_default=$(uname -m)
2742 fi
2743 cpu="generic"
2744 intrinsics="none"
2745
2746 # configurable options
2747 enable $PROGRAM_LIST
2748 enable $DOCUMENT_LIST
2749 enable $EXAMPLE_LIST
2750 enable $(filter_out avresample $LIBRARY_LIST)
2751 enable stripping
2752
2753 enable asm
2754 enable debug
2755 enable doc
2756 enable faan faandct faanidct
2757 enable optimizations
2758 enable runtime_cpudetect
2759 enable safe_bitstream_reader
2760 enable static
2761 enable swscale_alpha
2762
2763 sws_max_filter_size_default=256
2764 set_default sws_max_filter_size
2765
2766 # Enable hwaccels by default.
2767 enable dxva2 vaapi vda vdpau xvmc
2768 enable xlib
2769
2770 # build settings
2771 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2772 LIBPREF="lib"
2773 LIBSUF=".a"
2774 FULLNAME='$(NAME)$(BUILDSUF)'
2775 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
2776 SLIBPREF="lib"
2777 SLIBSUF=".so"
2778 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
2779 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2780 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2781 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2782 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2783 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2784
2785 asflags_filter=echo
2786 cflags_filter=echo
2787 ldflags_filter=echo
2788
2789 AS_C='-c'
2790 AS_O='-o $@'
2791 CC_C='-c'
2792 CC_E='-E -o $@'
2793 CC_O='-o $@'
2794 CXX_C='-c'
2795 CXX_O='-o $@'
2796 LD_O='-o $@'
2797 LD_LIB='-l%'
2798 LD_PATH='-L'
2799 HOSTCC_C='-c'
2800 HOSTCC_E='-E -o $@'
2801 HOSTCC_O='-o $@'
2802 HOSTLD_O='-o $@'
2803
2804 host_libs='-lm'
2805 host_cflags_filter=echo
2806 host_ldflags_filter=echo
2807
2808 target_path='$(CURDIR)'
2809
2810 # since the object filename is not given with the -MM flag, the compiler
2811 # is only able to print the basename, and we must add the path ourselves
2812 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2813 DEPFLAGS='-MM'
2814
2815 # find source path
2816 if test -f configure; then
2817     source_path=.
2818 else
2819     source_path=$(cd $(dirname "$0"); pwd)
2820     echo "$source_path" | grep -q '[[:blank:]]' &&
2821         die "Out of tree builds are impossible with whitespace in source path."
2822     test -e "$source_path/config.h" &&
2823         die "Out of tree builds are impossible with config.h in source dir."
2824 fi
2825
2826 for v in "$@"; do
2827     r=${v#*=}
2828     l=${v%"$r"}
2829     r=$(sh_quote "$r")
2830     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
2831 done
2832
2833 find_things(){
2834     thing=$1
2835     pattern=$2
2836     file=$source_path/$3
2837     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2838 }
2839
2840 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2841 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2842 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2843 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2844 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
2845 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2846 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2847 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2848 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2849 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
2850 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2851
2852 ALL_COMPONENTS="
2853     $BSF_LIST
2854     $DECODER_LIST
2855     $DEMUXER_LIST
2856     $ENCODER_LIST
2857     $FILTER_LIST
2858     $HWACCEL_LIST
2859     $INDEV_LIST
2860     $MUXER_LIST
2861     $OUTDEV_LIST
2862     $PARSER_LIST
2863     $PROTOCOL_LIST
2864 "
2865
2866 for n in $COMPONENT_LIST; do
2867     v=$(toupper ${n%s})_LIST
2868     eval enable \$$v
2869     eval ${n}_if_any="\$$v"
2870 done
2871
2872 enable $ARCH_EXT_LIST
2873
2874 die_unknown(){
2875     echo "Unknown option \"$1\"."
2876     echo "See $0 --help for available options."
2877     exit 1
2878 }
2879
2880 print_3_columns() {
2881     cat | tr ' ' '\n' | sort | pr -r -3 -t
2882 }
2883
2884 show_list() {
2885     suffix=_$1
2886     shift
2887     echo $* | sed s/$suffix//g | print_3_columns
2888     exit 0
2889 }
2890
2891 rand_list(){
2892     IFS=', '
2893     set -- $*
2894     unset IFS
2895     for thing; do
2896         comp=${thing%:*}
2897         prob=${thing#$comp}
2898         prob=${prob#:}
2899         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2900         echo "prob ${prob:-0.5}"
2901         printf '%s\n' $comp
2902     done
2903 }
2904
2905 do_random(){
2906     action=$1
2907     shift
2908     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2909     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2910 }
2911
2912 for opt do
2913     optval="${opt#*=}"
2914     case "$opt" in
2915         --extra-ldflags=*)
2916             add_ldflags $optval
2917         ;;
2918         --extra-ldexeflags=*)
2919             add_ldexeflags $optval
2920         ;;
2921         --extra-libs=*)
2922             add_extralibs $optval
2923         ;;
2924         --disable-devices)
2925             disable $INDEV_LIST $OUTDEV_LIST
2926         ;;
2927         --enable-debug=*)
2928             debuglevel="$optval"
2929         ;;
2930         --disable-programs)
2931             disable $PROGRAM_LIST
2932         ;;
2933         --disable-everything)
2934             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2935         ;;
2936         --disable-all)
2937             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2938             disable $LIBRARY_LIST $PROGRAM_LIST doc
2939         ;;
2940         --enable-random|--disable-random)
2941             action=${opt%%-random}
2942             do_random ${action#--} $COMPONENT_LIST
2943         ;;
2944         --enable-random=*|--disable-random=*)
2945             action=${opt%%-random=*}
2946             do_random ${action#--} $optval
2947         ;;
2948         --enable-*=*|--disable-*=*)
2949             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2950             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2951             eval list=\$$(toupper $thing)_LIST
2952             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2953             list=$(filter "$name" $list)
2954             [ "$list" = "" ] && warn "Option $opt did not match anything"
2955             $action $list
2956         ;;
2957         --enable-?*|--disable-?*)
2958             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2959             if is_in $option $COMPONENT_LIST; then
2960                 test $action = disable && action=unset
2961                 eval $action \$$(toupper ${option%s})_LIST
2962             elif is_in $option $CMDLINE_SELECT; then
2963                 $action $option
2964             else
2965                 die_unknown $opt
2966             fi
2967         ;;
2968         --list-*)
2969             NAME="${opt#--list-}"
2970             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2971             NAME=${NAME%s}
2972             eval show_list $NAME \$$(toupper $NAME)_LIST
2973         ;;
2974         --help|-h) show_help
2975         ;;
2976         --fatal-warnings) enable fatal_warnings
2977         ;;
2978         *)
2979             optname="${opt%%=*}"
2980             optname="${optname#--}"
2981             optname=$(echo "$optname" | sed 's/-/_/g')
2982             if is_in $optname $CMDLINE_SET; then
2983                 eval $optname='$optval'
2984             elif is_in $optname $CMDLINE_APPEND; then
2985                 append $optname "$optval"
2986             else
2987                 die_unknown $opt
2988             fi
2989         ;;
2990     esac
2991 done
2992
2993 disabled logging && logfile=/dev/null
2994
2995 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
2996 set >> $logfile
2997
2998 test -n "$valgrind" && toolchain="valgrind-memcheck"
2999
3000 case "$toolchain" in
3001     clang-asan)
3002         cc_default="clang"
3003         add_cflags  -fsanitize=address
3004         add_ldflags -fsanitize=address
3005     ;;
3006     clang-tsan)
3007         cc_default="clang"
3008         add_cflags  -fsanitize=thread -pie
3009         add_ldflags -fsanitize=thread -pie
3010     ;;
3011     clang-usan)
3012         cc_default="clang"
3013         add_cflags  -fsanitize=undefined
3014         add_ldflags -fsanitize=undefined
3015     ;;
3016     gcc-asan)
3017         cc_default="gcc"
3018         add_cflags  -fsanitize=address
3019         add_ldflags -fsanitize=address
3020     ;;
3021     gcc-tsan)
3022         cc_default="gcc"
3023         add_cflags  -fsanitize=thread -pie -fPIC
3024         add_ldflags -fsanitize=thread -pie -fPIC
3025     ;;
3026     gcc-usan)
3027         cc_default="gcc"
3028         add_cflags  -fsanitize=undefined
3029         add_ldflags -fsanitize=undefined
3030     ;;
3031     valgrind-massif)
3032         target_exec_default=${valgrind:-"valgrind"}
3033         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"
3034     ;;
3035     valgrind-memcheck)
3036         target_exec_default=${valgrind:-"valgrind"}
3037         target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3038     ;;
3039     msvc)
3040         # Check whether the current MSVC version needs the C99 converter.
3041         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3042         # support enough of C99 to build ffmpeg. Default to the new
3043         # behaviour if the regexp was unable to match anything, since this
3044         # successfully parses the version number of existing supported
3045         # versions that require the converter (MSVC 2010 and 2012).
3046         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3047         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3048             cc_default="cl"
3049         else
3050             cc_default="c99wrap cl"
3051         fi
3052         ld_default="link"
3053         nm_default="dumpbin -symbols"
3054         ar_default="lib"
3055         target_os_default="win32"
3056         # Use a relative path for TMPDIR. This makes sure all the
3057         # ffconf temp files are written with a relative path, avoiding
3058         # issues with msys/win32 path conversion for MSVC parameters
3059         # such as -Fo<file> or -out:<file>.
3060         TMPDIR=.
3061     ;;
3062     icl)
3063         cc_default="icl"
3064         ld_default="xilink"
3065         nm_default="dumpbin -symbols"
3066         ar_default="xilib"
3067         target_os_default="win32"
3068         TMPDIR=.
3069     ;;
3070     gcov)
3071         add_cflags  -fprofile-arcs -ftest-coverage
3072         add_ldflags -fprofile-arcs -ftest-coverage
3073     ;;
3074     hardened)
3075         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3076         add_cflags   -fno-strict-overflow -fstack-protector-all
3077         add_ldflags  -Wl,-z,relro -Wl,-z,now
3078     ;;
3079     ?*)
3080         die "Unknown toolchain $toolchain"
3081     ;;
3082 esac
3083
3084 test -n "$cross_prefix" && enable cross_compile
3085
3086 if enabled cross_compile; then
3087     test -n "$arch" && test -n "$target_os" ||
3088         die "Must specify target arch and OS when cross-compiling"
3089 fi
3090
3091 ar_default="${cross_prefix}${ar_default}"
3092 cc_default="${cross_prefix}${cc_default}"
3093 cxx_default="${cross_prefix}${cxx_default}"
3094 nm_default="${cross_prefix}${nm_default}"
3095 pkg_config_default="${cross_prefix}${pkg_config_default}"
3096 ranlib_default="${cross_prefix}${ranlib_default}"
3097 strip_default="${cross_prefix}${strip_default}"
3098 windres_default="${cross_prefix}${windres_default}"
3099
3100 sysinclude_default="${sysroot}/usr/include"
3101
3102 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3103     target_exec target_os yasmexe
3104 enabled cross_compile || host_cc_default=$cc
3105 set_default host_cc
3106
3107 pkg_config_fail_message=""
3108 if ! $pkg_config --version >/dev/null 2>&1; then
3109     warn "$pkg_config not found, library detection may fail."
3110     pkg_config=false
3111 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
3112     pkg_config_fail_message="
3113 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
3114 fi
3115
3116 if test $doxygen != $doxygen_default && \
3117   ! $doxygen --version >/dev/null 2>&1; then
3118     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3119 fi
3120
3121 exesuf() {
3122     case $1 in
3123         mingw32*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3124     esac
3125 }
3126
3127 EXESUF=$(exesuf $target_os)
3128 HOSTEXESUF=$(exesuf $host_os)
3129
3130 # set temporary file name
3131 : ${TMPDIR:=$TEMPDIR}
3132 : ${TMPDIR:=$TMP}
3133 : ${TMPDIR:=/tmp}
3134
3135 if [ -n "$tempprefix" ] ; then
3136     mktemp(){
3137         echo $tempprefix.${HOSTNAME}.${UID}
3138     }
3139 elif ! check_cmd mktemp -u XXXXXX; then
3140     # simple replacement for missing mktemp
3141     # NOT SAFE FOR GENERAL USE
3142     mktemp(){
3143         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3144     }
3145 fi
3146
3147 tmpfile(){
3148     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
3149         (set -C; exec > $tmp) 2>/dev/null ||
3150         die "Unable to create temporary file in $TMPDIR."
3151     append TMPFILES $tmp
3152     eval $1=$tmp
3153 }
3154
3155 trap 'rm -f -- $TMPFILES' EXIT
3156
3157 tmpfile TMPASM .asm
3158 tmpfile TMPC   .c
3159 tmpfile TMPCPP .cpp
3160 tmpfile TMPE   $EXESUF
3161 tmpfile TMPH   .h
3162 tmpfile TMPM   .m
3163 tmpfile TMPO   .o
3164 tmpfile TMPS   .S
3165 tmpfile TMPSH  .sh
3166 tmpfile TMPV   .ver
3167
3168 unset -f mktemp
3169
3170 chmod +x $TMPE
3171
3172 # make sure we can execute files in $TMPDIR
3173 cat > $TMPSH 2>> $logfile <<EOF
3174 #! /bin/sh
3175 EOF
3176 chmod +x $TMPSH >> $logfile 2>&1
3177 if ! $TMPSH >> $logfile 2>&1; then
3178     cat <<EOF
3179 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3180 variable to another directory and make sure that it is not mounted noexec.
3181 EOF
3182     die "Sanity test failed."
3183 fi
3184
3185 armasm_flags(){
3186     for flag; do
3187         case $flag in
3188             # Filter out MSVC cl.exe options from cflags that shouldn't
3189             # be passed to gas-preprocessor
3190             -M[TD]*)                                            ;;
3191             *)                  echo $flag                      ;;
3192         esac
3193    done
3194 }
3195
3196 ccc_flags(){
3197     for flag; do
3198         case $flag in
3199             -std=c99)           echo -c99                       ;;
3200             -mcpu=*)            echo -arch ${flag#*=}           ;;
3201             -mieee)             echo -ieee                      ;;
3202             -O*|-fast)          echo $flag                      ;;
3203             -fno-math-errno)    echo -assume nomath_errno       ;;
3204             -g)                 echo -g3                        ;;
3205             -Wall)              echo -msg_enable level2         ;;
3206             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
3207             -Wl,*)              echo $flag                      ;;
3208             -f*|-W*)                                            ;;
3209             *)                  echo $flag                      ;;
3210         esac
3211    done
3212 }
3213
3214 cparser_flags(){
3215     for flag; do
3216         case $flag in
3217             -Wno-switch)             echo -Wno-switch-enum ;;
3218             -Wno-format-zero-length) ;;
3219             -Wdisabled-optimization) ;;
3220             -Wno-pointer-sign)       echo -Wno-other ;;
3221             *)                       echo $flag ;;
3222         esac
3223     done
3224 }
3225
3226 msvc_common_flags(){
3227     for flag; do
3228         case $flag in
3229             # In addition to specifying certain flags under the compiler
3230             # specific filters, they must be specified here as well or else the
3231             # generic catch all at the bottom will print the original flag.
3232             -Wall)                ;;
3233             -std=c99)             ;;
3234             # Common flags
3235             -fomit-frame-pointer) ;;
3236             -g)                   echo -Z7 ;;
3237             -fno-math-errno)      ;;
3238             -fno-common)          ;;
3239             -fno-signed-zeros)    ;;
3240             -fPIC)                ;;
3241             -mthumb)              ;;
3242             -march=*)             ;;
3243             -lz)                  echo zlib.lib ;;
3244             -lavifil32)           echo vfw32.lib ;;
3245             -lavicap32)           echo vfw32.lib user32.lib ;;
3246             -l*)                  echo ${flag#-l}.lib ;;
3247             -L*)                  echo -libpath:${flag#-L} ;;
3248             *)                    echo $flag ;;
3249         esac
3250     done
3251 }
3252
3253 msvc_flags(){
3254     msvc_common_flags "$@"
3255     for flag; do
3256         case $flag in
3257             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3258                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3259                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3260                                        -wd4554 \
3261                                        -wd4273 -wd4701 ;;
3262         esac
3263     done
3264 }
3265
3266 icl_flags(){
3267     msvc_common_flags "$@"
3268     for flag; do
3269         case $flag in
3270             # Despite what Intel's documentation says -Wall, which is supported
3271             # on Windows, does enable remarks so disable them here.
3272             -Wall)                echo $flag -Qdiag-disable:remark ;;
3273             -std=c99)             echo -Qstd=c99 ;;
3274             -flto)                echo -ipo ;;
3275         esac
3276     done
3277 }
3278
3279 icc_flags(){
3280     for flag; do
3281         case $flag in
3282             -flto)                echo -ipo ;;
3283             *)                    echo $flag ;;
3284         esac
3285     done
3286 }
3287
3288 pgi_flags(){
3289     for flag; do
3290         case $flag in
3291             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3292             -fomit-frame-pointer) echo -Mnoframe ;;
3293             -g)                   echo -gopt ;;
3294             *)                    echo $flag ;;
3295         esac
3296     done
3297 }
3298
3299 suncc_flags(){
3300     for flag; do
3301         case $flag in
3302             -march=*|-mcpu=*)
3303                 case "${flag#*=}" in
3304                     native)                   echo -xtarget=native       ;;
3305                     v9|niagara)               echo -xarch=sparc          ;;
3306                     ultrasparc)               echo -xarch=sparcvis       ;;
3307                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3308                     i586|pentium)             echo -xchip=pentium        ;;
3309                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3310                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3311                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3312                     pentium4*)          echo -xtarget=pentium4           ;;
3313                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3314                     *-sse3)             echo -xarch=sse3                 ;;
3315                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3316                     bonnell)                   echo -xarch=ssse3         ;;
3317                     corei7|nehalem)            echo -xtarget=nehalem     ;;
3318                     westmere)                  echo -xtarget=westmere    ;;
3319                     silvermont)                echo -xarch=sse4_2        ;;
3320                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
3321                     core-avx*|ivybridge|haswell|broadwell)
3322                                                echo -xarch=avx           ;;
3323                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
3324                     btver1)                    echo -xarch=amdsse4a      ;;
3325                     btver2|bdver*)             echo -xarch=avx           ;;
3326                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3327                     k8|opteron|athlon64|athlon-fx)
3328                                                echo -xarch=sse2a         ;;
3329                     athlon*)                   echo -xarch=pentium_proa  ;;
3330                 esac
3331                 ;;
3332             -std=c99)             echo -xc99              ;;
3333             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3334             -fPIC)                echo -KPIC -xcode=pic32 ;;
3335             -W*,*)                echo $flag              ;;
3336             -f*-*|-W*|-mimpure-text)                      ;;
3337             -shared)              echo -G                 ;;
3338             *)                    echo $flag              ;;
3339         esac
3340     done
3341 }
3342
3343 tms470_flags(){
3344     for flag; do
3345         case $flag in
3346             -march=*|-mcpu=*)
3347                 case "${flag#*=}" in
3348                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3349                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3350                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3351                     armv6*|arm11*)          echo -mv=6   ;;
3352                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3353                                             echo -mv=5e  ;;
3354                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3355                 esac
3356                 ;;
3357             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3358             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3359             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3360             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3361             -msoft-float)   echo --float_support=vfplib       ;;
3362             -O[0-3]|-mf=*)  echo $flag                        ;;
3363             -g)             echo -g -mn                       ;;
3364             -pds=*)         echo $flag                        ;;
3365             -D*|-I*)        echo $flag                        ;;
3366             --gcc|--abi=*)  echo $flag                        ;;
3367             -me)            echo $flag                        ;;
3368         esac
3369     done
3370 }
3371
3372 probe_cc(){
3373     pfx=$1
3374     _cc=$2
3375
3376     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3377     unset _ld_o _ldflags _ld_lib _ld_path
3378     unset _depflags _DEPCMD _DEPFLAGS
3379     _flags_filter=echo
3380
3381     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
3382         true # no-op to avoid reading stdin in following checks
3383     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3384         _type=llvm_gcc
3385         gcc_extra_ver=$(expr "$($_cc --version | head -n1)" : '.*\((.*)\)')
3386         _ident="llvm-gcc $($_cc -dumpversion) $gcc_extra_ver"
3387         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3388         _cflags_speed='-O3'
3389         _cflags_size='-Os'
3390     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3391         _type=gcc
3392         gcc_version=$($_cc --version | head -n1)
3393         gcc_basever=$($_cc -dumpversion)
3394         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3395         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3396         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3397         if ! $_cc -dumpversion | grep -q '^2\.'; then
3398             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3399         fi
3400         _cflags_speed='-O3'
3401         _cflags_size='-Os'
3402     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3403         _type=icc
3404         _ident=$($_cc --version | head -n1)
3405         _depflags='-MMD'
3406         _cflags_speed='-O3'
3407         _cflags_size='-Os'
3408         _cflags_noopt='-O1'
3409         _flags_filter=icc_flags
3410     elif $_cc -v 2>&1 | grep -q xlc; then
3411         _type=xlc
3412         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3413         _cflags_speed='-O5'
3414         _cflags_size='-O5 -qcompact'
3415     elif $_cc -V 2>/dev/null | grep -q Compaq; then
3416         _type=ccc
3417         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
3418         _DEPFLAGS='-M'
3419         _cflags_speed='-fast'
3420         _cflags_size='-O1'
3421         _flags_filter=ccc_flags
3422     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
3423         test -d "$sysroot" || die "No valid sysroot specified."
3424         _type=armcc
3425         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
3426         armcc_conf="$PWD/armcc.conf"
3427         $_cc --arm_linux_configure                 \
3428              --arm_linux_config_file="$armcc_conf" \
3429              --configure_sysroot="$sysroot"        \
3430              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
3431              die "Error creating armcc configuration file."
3432         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
3433         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
3434         as_default="${cross_prefix}gcc"
3435         _depflags='-MMD'
3436         _cflags_speed='-O3'
3437         _cflags_size='-Os'
3438     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
3439         _type=tms470
3440         _ident=$($_cc -version | head -n1 | tr -s ' ')
3441         _flags='--gcc --abi=eabi -me'
3442         _cc_e='-ppl -fe=$@'
3443         _cc_o='-fe=$@'
3444         _depflags='-ppa -ppd=$(@:.o=.d)'
3445         _cflags_speed='-O3 -mf=5'
3446         _cflags_size='-O3 -mf=2'
3447         _flags_filter=tms470_flags
3448     elif $_cc -v 2>&1 | grep -q clang; then
3449         _type=clang
3450         _ident=$($_cc --version | head -n1)
3451         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3452         _cflags_speed='-O3'
3453         _cflags_size='-Os'
3454     elif $_cc -V 2>&1 | grep -q Sun; then
3455         _type=suncc
3456         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
3457         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3458         _DEPFLAGS='-xM1 -xc99'
3459         _ldflags='-std=c99'
3460         _cflags_speed='-O5'
3461         _cflags_size='-O5 -xspace'
3462         _flags_filter=suncc_flags
3463     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3464         _type=pathscale
3465         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3466         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3467         _cflags_speed='-O2'
3468         _cflags_size='-Os'
3469         _flags_filter='filter_out -Wdisabled-optimization'
3470     elif $_cc -v 2>&1 | grep -q Open64; then
3471         _type=open64
3472         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3473         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3474         _cflags_speed='-O2'
3475         _cflags_size='-Os'
3476         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3477     elif $_cc -V 2>&1 | grep -q Portland; then
3478         _type=pgi
3479         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
3480         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
3481         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
3482         _cflags_size="-O2 -Munroll=c:1 $opt_common"
3483         _cflags_noopt="-O"
3484         _flags_filter=pgi_flags
3485     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
3486         _type=armasm
3487         _ident=$($_cc | head -n1)
3488         # 4509: "This form of conditional instruction is deprecated"
3489         _flags="-nologo -ignore 4509"
3490         _flags_filter=armasm_flags
3491     elif $_cc 2>&1 | grep -q Intel; then
3492         _type=icl
3493         _ident=$($cc 2>&1 | head -n1)
3494         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3495         # Not only is O3 broken on 13.x+ but it is slower on all previous
3496         # versions (tested) as well.
3497         _cflags_speed="-O2"
3498         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3499         if $_cc 2>&1 | grep -q Linker; then
3500             _ld_o='-out:$@'
3501         else
3502             _ld_o='-Fe$@'
3503         fi
3504         _cc_o='-Fo$@'
3505         _cc_e='-P'
3506         _flags_filter=icl_flags
3507         _ld_lib='lib%.a'
3508         _ld_path='-libpath:'
3509         # -Qdiag-error to make icl error when seeing certain unknown arguments
3510         _flags='-nologo -Qdiag-error:4044,10157'
3511         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
3512         # with MSVC which enables it by default.
3513         _cflags='-D_USE_MATH_DEFINES -FIstdlib.h -Dstrtoll=_strtoi64 -Qms0 -Qvec- -Qsimd- -GS -fp:precise'
3514         if [ $pfx = hostcc ]; then
3515             append _cflags -Dsnprintf=_snprintf
3516         fi
3517         disable stripping
3518     elif $_cc 2>&1 | grep -q Microsoft; then
3519         _type=msvc
3520         _ident=$($cc 2>&1 | head -n1)
3521         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
3522         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
3523         _cflags_speed="-O2"
3524         _cflags_size="-O1"
3525         if $_cc 2>&1 | grep -q Linker; then
3526             _ld_o='-out:$@'
3527         else
3528             _ld_o='-Fe$@'
3529         fi
3530         _cc_o='-Fo$@'
3531         _cc_e='-P -Fi$@'
3532         _flags_filter=msvc_flags
3533         _ld_lib='lib%.a'
3534         _ld_path='-libpath:'
3535         _flags='-nologo'
3536         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -Dinline=__inline -FIstdlib.h -Dstrtoll=_strtoi64'
3537         if [ $pfx = hostcc ]; then
3538             if [ -z "$cl_major_ver" ] || [ $cl_major_ver -le 18 ]; then
3539                 append _cflags -Dsnprintf=_snprintf
3540             fi
3541         fi
3542         disable stripping
3543     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3544         _type=cparser
3545         _ident=$($_cc --version | head -n1)
3546         _depflags='-MMD'
3547         _cflags_speed='-O4'
3548         _cflags_size='-O2'
3549         _flags_filter=cparser_flags
3550     fi
3551
3552     eval ${pfx}_type=\$_type
3553     eval ${pfx}_ident=\$_ident
3554 }
3555
3556 set_ccvars(){
3557     eval ${1}_C=\${_cc_c-\${${1}_C}}
3558     eval ${1}_E=\${_cc_e-\${${1}_E}}
3559     eval ${1}_O=\${_cc_o-\${${1}_O}}
3560
3561     if [ -n "$_depflags" ]; then
3562         eval ${1}_DEPFLAGS=\$_depflags
3563     else
3564         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3565         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3566         eval DEP${1}FLAGS=\$_flags
3567     fi
3568 }
3569
3570 probe_cc cc "$cc"
3571 cflags_filter=$_flags_filter
3572 cflags_speed=$_cflags_speed
3573 cflags_size=$_cflags_size
3574 cflags_noopt=$_cflags_noopt
3575 add_cflags $_flags $_cflags
3576 cc_ldflags=$_ldflags
3577 set_ccvars CC
3578
3579 probe_cc hostcc "$host_cc"
3580 host_cflags_filter=$_flags_filter
3581 add_host_cflags  $_flags $_cflags
3582 set_ccvars HOSTCC
3583
3584 test -n "$cc_type" && enable $cc_type ||
3585     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3586
3587 : ${as_default:=$cc}
3588 : ${dep_cc_default:=$cc}
3589 : ${ld_default:=$cc}
3590 : ${host_ld_default:=$host_cc}
3591 set_default ar as dep_cc ld host_ld windres
3592
3593 probe_cc as "$as"
3594 asflags_filter=$_flags_filter
3595 add_asflags $_flags $_cflags
3596 set_ccvars AS
3597
3598 probe_cc ld "$ld"
3599 ldflags_filter=$_flags_filter
3600 add_ldflags $_flags $_ldflags
3601 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3602 LD_O=${_ld_o-$LD_O}
3603 LD_LIB=${_ld_lib-$LD_LIB}
3604 LD_PATH=${_ld_path-$LD_PATH}
3605
3606 probe_cc hostld "$host_ld"
3607 host_ldflags_filter=$_flags_filter
3608 add_host_ldflags $_flags $_ldflags
3609 HOSTLD_O=${_ld_o-$HOSTLD_O}
3610
3611 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3612     probe_cc depcc "$dep_cc"
3613     CCDEP=${_DEPCMD:-$DEPCMD}
3614     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3615     DEPCCFLAGS=$_flags
3616 fi
3617
3618 if $ar 2>&1 | grep -q Microsoft; then
3619     arflags="-nologo"
3620     ar_o='-out:$@'
3621 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3622     arflags="rq"
3623     ar_o='$@'
3624 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3625     arflags='-Xany -r -c'
3626     ar_o='$@'
3627 elif $ar 2>&1 | grep -q "\[D\] "; then
3628     arflags="rcD"
3629     ar_o='$@'
3630 else
3631     arflags="rc"
3632     ar_o='$@'
3633 fi
3634
3635 add_cflags $extra_cflags
3636 add_cxxflags $extra_cxxflags
3637 add_asflags $extra_cflags
3638
3639 if test -n "$sysroot"; then
3640     case "$cc_type" in
3641         gcc|llvm_gcc|clang)
3642             add_cppflags --sysroot="$sysroot"
3643             add_ldflags --sysroot="$sysroot"
3644 # On Darwin --sysroot may be ignored, -isysroot always affects headers and linking
3645             add_cppflags -isysroot "$sysroot"
3646             add_ldflags -isysroot "$sysroot"
3647         ;;
3648         tms470)
3649             add_cppflags -I"$sysinclude"
3650             add_ldflags  --sysroot="$sysroot"
3651         ;;
3652     esac
3653 fi
3654
3655 if test "$cpu" = host; then
3656     enabled cross_compile &&
3657         die "--cpu=host makes no sense when cross-compiling."
3658
3659     case "$cc_type" in
3660         gcc|llvm_gcc)
3661             check_native(){
3662                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3663                 sed -n "/cc1.*$1=/{
3664                             s/.*$1=\\([^ ]*\\).*/\\1/
3665                             p
3666                             q
3667                         }" $TMPE
3668             }
3669             cpu=$(check_native -march || check_native -mcpu)
3670         ;;
3671     esac
3672
3673     test "${cpu:-host}" = host &&
3674         die "--cpu=host not supported with compiler $cc"
3675 fi
3676
3677 # Deal with common $arch aliases
3678 case "$arch" in
3679     aarch64|arm64)
3680         arch="aarch64"
3681     ;;
3682     arm*|iPad*|iPhone*)
3683         arch="arm"
3684     ;;
3685     mips*|IP*)
3686         arch="mips"
3687     ;;
3688     parisc*|hppa*)
3689         arch="parisc"
3690     ;;
3691     "Power Macintosh"|ppc*|powerpc*)
3692         arch="ppc"
3693     ;;
3694     s390|s390x)
3695         arch="s390"
3696     ;;
3697     sh4|sh)
3698         arch="sh4"
3699     ;;
3700     sun4u|sparc*)
3701         arch="sparc"
3702     ;;
3703     tilegx|tile-gx)
3704         arch="tilegx"
3705     ;;
3706     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
3707         arch="x86"
3708     ;;
3709 esac
3710
3711 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3712 enable $arch
3713
3714 # Add processor-specific flags
3715 if enabled aarch64; then
3716
3717     case $cpu in
3718         armv*)
3719             cpuflags="-march=$cpu"
3720         ;;
3721         *)
3722             cpuflags="-mcpu=$cpu"
3723         ;;
3724     esac
3725
3726 elif enabled alpha; then
3727
3728     cpuflags="-mcpu=$cpu"
3729
3730 elif enabled arm; then
3731
3732     check_arm_arch() {
3733         check_cpp_condition stddef.h \
3734             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3735             $cpuflags
3736     }
3737
3738     probe_arm_arch() {
3739         if   check_arm_arch 4;        then echo armv4;
3740         elif check_arm_arch 4T;       then echo armv4t;
3741         elif check_arm_arch 5;        then echo armv5;
3742         elif check_arm_arch 5E;       then echo armv5e;
3743         elif check_arm_arch 5T;       then echo armv5t;
3744         elif check_arm_arch 5TE;      then echo armv5te;
3745         elif check_arm_arch 5TEJ;     then echo armv5te;
3746         elif check_arm_arch 6;        then echo armv6;
3747         elif check_arm_arch 6J;       then echo armv6j;
3748         elif check_arm_arch 6K;       then echo armv6k;
3749         elif check_arm_arch 6Z;       then echo armv6z;
3750         elif check_arm_arch 6ZK;      then echo armv6zk;
3751         elif check_arm_arch 6T2;      then echo armv6t2;
3752         elif check_arm_arch 7;        then echo armv7;
3753         elif check_arm_arch 7A  7_A;  then echo armv7-a;
3754         elif check_arm_arch 7S;       then echo armv7-a;
3755         elif check_arm_arch 7R  7_R;  then echo armv7-r;
3756         elif check_arm_arch 7M  7_M;  then echo armv7-m;
3757         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
3758         elif check_arm_arch 8A  8_A;  then echo armv8-a;
3759         fi
3760     }
3761
3762     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3763
3764     case $cpu in
3765         armv*)
3766             cpuflags="-march=$cpu"
3767             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3768         ;;
3769         *)
3770             cpuflags="-mcpu=$cpu"
3771             case $cpu in
3772                 cortex-a*)                               subarch=armv7a  ;;
3773                 cortex-r*)                               subarch=armv7r  ;;
3774                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3775                 arm11*)                                  subarch=armv6   ;;
3776                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3777                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3778                 *)                             subarch=$(probe_arm_arch) ;;
3779             esac
3780         ;;
3781     esac
3782
3783     case "$subarch" in
3784         armv5t*)    enable fast_clz                ;;
3785         armv[6-8]*)
3786             enable fast_clz
3787             disabled fast_unaligned || enable fast_unaligned
3788             ;;
3789     esac
3790
3791 elif enabled avr32; then
3792
3793     case $cpu in
3794         ap7[02]0[0-2])
3795             subarch="avr32_ap"
3796             cpuflags="-mpart=$cpu"
3797         ;;
3798         ap)
3799             subarch="avr32_ap"
3800             cpuflags="-march=$cpu"
3801         ;;
3802         uc3[ab]*)
3803             subarch="avr32_uc"
3804             cpuflags="-mcpu=$cpu"
3805         ;;
3806         uc)
3807             subarch="avr32_uc"
3808             cpuflags="-march=$cpu"
3809         ;;
3810     esac
3811
3812 elif enabled bfin; then
3813
3814     cpuflags="-mcpu=$cpu"
3815
3816 elif enabled mips; then
3817
3818     cpuflags="-march=$cpu"
3819
3820     case $cpu in
3821         24kc)
3822             disable mipsfpu
3823             disable mipsdspr1
3824             disable mipsdspr2
3825         ;;
3826         24kf*)
3827             disable mipsdspr1
3828             disable mipsdspr2
3829         ;;
3830         24kec|34kc|1004kc)
3831             disable mipsfpu
3832             disable mipsdspr2
3833         ;;
3834         24kef*|34kf*|1004kf*)
3835             disable mipsdspr2
3836         ;;
3837         74kc)
3838             disable mipsfpu
3839         ;;
3840     esac
3841
3842 elif enabled ppc; then
3843
3844     disable ldbrx
3845     disable vsx
3846
3847     case $(tolower $cpu) in
3848         601|ppc601|powerpc601)
3849             cpuflags="-mcpu=601"
3850             disable altivec
3851         ;;
3852         603*|ppc603*|powerpc603*)
3853             cpuflags="-mcpu=603"
3854             disable altivec
3855         ;;
3856         604*|ppc604*|powerpc604*)
3857             cpuflags="-mcpu=604"
3858             disable altivec
3859         ;;
3860         g3|75*|ppc75*|powerpc75*)
3861             cpuflags="-mcpu=750"
3862             disable altivec
3863         ;;
3864         g4|745*|ppc745*|powerpc745*)
3865             cpuflags="-mcpu=7450"
3866         ;;
3867         74*|ppc74*|powerpc74*)
3868             cpuflags="-mcpu=7400"
3869         ;;
3870         g5|970|ppc970|powerpc970)
3871             cpuflags="-mcpu=970"
3872         ;;
3873         power[3-8]*)
3874             cpuflags="-mcpu=$cpu"
3875         ;;
3876         cell)
3877             cpuflags="-mcpu=cell"
3878             enable ldbrx
3879         ;;
3880         e500mc)
3881             cpuflags="-mcpu=e500mc"
3882             disable altivec
3883         ;;
3884         e500v2)
3885             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3886             disable altivec
3887             disable dcbzl
3888         ;;
3889         e500)
3890             cpuflags="-mcpu=8540 -mhard-float"
3891             disable altivec
3892             disable dcbzl
3893         ;;
3894     esac
3895
3896 elif enabled sparc; then
3897
3898     case $cpu in
3899         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3900             cpuflags="-mcpu=$cpu"
3901         ;;
3902         ultrasparc*|niagara[234])
3903             cpuflags="-mcpu=$cpu"
3904         ;;
3905     esac
3906
3907 elif enabled x86; then
3908
3909     case $cpu in
3910         i[345]86|pentium)
3911             cpuflags="-march=$cpu"
3912             disable i686
3913             disable mmx
3914         ;;
3915         # targets that do NOT support nopl and conditional mov (cmov)
3916         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3917             cpuflags="-march=$cpu"
3918             disable i686
3919         ;;
3920         # targets that do support nopl and conditional mov (cmov)
3921         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
3922         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|amdfam10|barcelona|b[dt]ver*)
3923             cpuflags="-march=$cpu"
3924             enable i686
3925             enable fast_cmov
3926         ;;
3927         # targets that do support conditional mov but on which it's slow
3928         pentium4|pentium4m|prescott|nocona)
3929             cpuflags="-march=$cpu"
3930             enable i686
3931             disable fast_cmov
3932         ;;
3933     esac
3934
3935 fi
3936
3937 if [ "$cpu" != generic ]; then
3938     add_cflags  $cpuflags
3939     add_asflags $cpuflags
3940 fi
3941
3942 # compiler sanity check
3943 check_exec <<EOF
3944 int main(void){ return 0; }
3945 EOF
3946 if test "$?" != 0; then
3947     echo "$cc is unable to create an executable file."
3948     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3949         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3950         echo "Only do this if you know what cross compiling means."
3951     fi
3952     die "C compiler test failed."
3953 fi
3954
3955 add_cppflags -D_ISOC99_SOURCE
3956 add_cxxflags -D__STDC_CONSTANT_MACROS
3957 check_cflags -std=c99
3958 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
3959 #include <stdlib.h>
3960 EOF
3961 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
3962 #include <stdlib.h>
3963 EOF
3964
3965 add_host_cppflags -D_ISOC99_SOURCE
3966 check_host_cflags -std=c99
3967 check_host_cflags -Wall
3968 check_host_cflags -O3
3969
3970 check_64bit(){
3971     arch32=$1
3972     arch64=$2
3973     expr=$3
3974     check_code cc "" "int test[2*($expr) - 1]" &&
3975         subarch=$arch64 || subarch=$arch32
3976 }
3977
3978 case "$arch" in
3979     aarch64|alpha|ia64)
3980         spic=$shared
3981     ;;
3982     mips)
3983         check_64bit mips mips64 '_MIPS_SIM > 1'
3984         spic=$shared
3985     ;;
3986     parisc)
3987         check_64bit parisc parisc64 'sizeof(void *) > 4'
3988         spic=$shared
3989     ;;
3990     ppc)
3991         check_64bit ppc ppc64 'sizeof(void *) > 4'
3992         spic=$shared
3993     ;;
3994     s390)
3995         check_64bit s390 s390x 'sizeof(void *) > 4'
3996         spic=$shared
3997     ;;
3998     sparc)
3999         check_64bit sparc sparc64 'sizeof(void *) > 4'
4000         spic=$shared
4001     ;;
4002     x86)
4003         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
4004         # Treat x32 as x64 for now. Note it also needs spic=$shared
4005         test "$subarch" = "x86_32" && check_cpp_condition stddef.h 'defined(__x86_64__)' &&
4006             subarch=x86_64
4007         if test "$subarch" = "x86_64"; then
4008             spic=$shared
4009         fi
4010     ;;
4011     ppc)
4012         check_cc <<EOF && subarch="ppc64"
4013         int test[(int)sizeof(char*) - 7];
4014 EOF
4015     ;;
4016 esac
4017
4018 enable $subarch
4019 enabled spic && enable_weak pic
4020
4021 # OS specific
4022 case $target_os in
4023     aix)
4024         SHFLAGS=-shared
4025         add_cppflags '-I\$(SRC_PATH)/compat/aix'
4026         enabled shared && add_ldflags -Wl,-brtl
4027         ;;
4028     android)
4029         disable symver
4030         enable section_data_rel_ro
4031         SLIB_INSTALL_NAME='$(SLIBNAME)'
4032         SLIB_INSTALL_LINKS=
4033         # soname not set on purpose
4034         SHFLAGS=-shared
4035         ;;
4036     haiku)
4037         prefix_default="/boot/common"
4038         network_extralibs="-lnetwork"
4039         host_libs=
4040         ;;
4041     sunos)
4042         SHFLAGS='-shared -Wl,-h,$$(@F)'
4043         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
4044         network_extralibs="-lsocket -lnsl"
4045         add_cppflags -D__EXTENSIONS__
4046         # When using suncc to build, the Solaris linker will mark
4047         # an executable with each instruction set encountered by
4048         # the Solaris assembler.  As our libraries contain their own
4049         # guards for processor-specific code, instead suppress
4050         # generation of the HWCAPS ELF section on Solaris x86 only.
4051         enabled_all suncc x86 &&
4052             echo "hwcap_1 = OVERRIDE;" > mapfile &&
4053             add_ldflags -Wl,-M,mapfile
4054         nm_default='nm -P -g'
4055         ;;
4056     netbsd)
4057         disable symver
4058         oss_indev_extralibs="-lossaudio"
4059         oss_outdev_extralibs="-lossaudio"
4060         enabled gcc || check_ldflags -Wl,-zmuldefs
4061         ;;
4062     openbsd|bitrig)
4063         disable symver
4064         SHFLAGS='-shared'
4065         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
4066         SLIB_INSTALL_LINKS=
4067         oss_indev_extralibs="-lossaudio"
4068         oss_outdev_extralibs="-lossaudio"