configure: fix zlib dependancy of tdsc
[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 >> $logfile
2997
2998 test -n "$cross_prefix" && enable cross_compile
2999
3000 if enabled cross_compile; then
3001     test -n "$arch" && test -n "$target_os" ||
3002         die "Must specify target arch and OS when cross-compiling"
3003 fi
3004
3005 test -n "$valgrind" && toolchain="valgrind-memcheck"
3006
3007 case "$toolchain" in
3008     clang-asan)
3009         cc_default="clang"
3010         add_cflags  -fsanitize=address
3011         add_ldflags -fsanitize=address
3012     ;;
3013     clang-tsan)
3014         cc_default="clang"
3015         add_cflags  -fsanitize=thread -pie
3016         add_ldflags -fsanitize=thread -pie
3017     ;;
3018     clang-usan)
3019         cc_default="clang"
3020         add_cflags  -fsanitize=undefined
3021         add_ldflags -fsanitize=undefined
3022     ;;
3023     gcc-asan)
3024         cc_default="gcc"
3025         add_cflags  -fsanitize=address
3026         add_ldflags -fsanitize=address
3027     ;;
3028     gcc-tsan)
3029         cc_default="gcc"
3030         add_cflags  -fsanitize=thread -pie -fPIC
3031         add_ldflags -fsanitize=thread -pie -fPIC
3032     ;;
3033     gcc-usan)
3034         cc_default="gcc"
3035         add_cflags  -fsanitize=undefined
3036         add_ldflags -fsanitize=undefined
3037     ;;
3038     valgrind-massif)
3039         target_exec_default=${valgrind:-"valgrind"}
3040         target_exec_args="--tool=massif --alloc-fn=av_malloc --alloc-fn=av_mallocz --alloc-fn=av_calloc --alloc-fn=av_fast_padded_malloc --alloc-fn=av_fast_malloc --alloc-fn=av_realloc_f --alloc-fn=av_fast_realloc --alloc-fn=av_realloc"
3041     ;;
3042     valgrind-memcheck)
3043         target_exec_default=${valgrind:-"valgrind"}
3044         target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3045     ;;
3046     msvc)
3047         # Check whether the current MSVC version needs the C99 converter.
3048         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3049         # support enough of C99 to build ffmpeg. Default to the new
3050         # behaviour if the regexp was unable to match anything, since this
3051         # successfully parses the version number of existing supported
3052         # versions that require the converter (MSVC 2010 and 2012).
3053         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3054         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3055             cc_default="cl"
3056         else
3057             cc_default="c99wrap cl"
3058         fi
3059         ld_default="link"
3060         nm_default="dumpbin -symbols"
3061         ar_default="lib"
3062         target_os_default="win32"
3063         # Use a relative path for TMPDIR. This makes sure all the
3064         # ffconf temp files are written with a relative path, avoiding
3065         # issues with msys/win32 path conversion for MSVC parameters
3066         # such as -Fo<file> or -out:<file>.
3067         TMPDIR=.
3068     ;;
3069     icl)
3070         cc_default="icl"
3071         ld_default="xilink"
3072         nm_default="dumpbin -symbols"
3073         ar_default="xilib"
3074         target_os_default="win32"
3075         TMPDIR=.
3076     ;;
3077     gcov)
3078         add_cflags  -fprofile-arcs -ftest-coverage
3079         add_ldflags -fprofile-arcs -ftest-coverage
3080     ;;
3081     hardened)
3082         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3083         add_cflags   -fno-strict-overflow -fstack-protector-all
3084         add_ldflags  -Wl,-z,relro -Wl,-z,now
3085     ;;
3086     ?*)
3087         die "Unknown toolchain $toolchain"
3088     ;;
3089 esac
3090
3091 ar_default="${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             $cpuflags
3736     }
3737
3738     probe_arm_arch() {
3739         if   check_arm_arch 4;        then echo armv4;
3740         elif check_arm_arch 4T;       then echo armv4t;
3741         elif check_arm_arch 5;        then echo armv5;
3742         elif check_arm_arch 5E;       then echo armv5e;
3743         elif check_arm_arch 5T;       then echo armv5t;
3744         elif check_arm_arch 5TE;      then echo armv5te;
3745         elif check_arm_arch 5TEJ;     then echo armv5te;
3746         elif check_arm_arch 6;        then echo armv6;
3747         elif check_arm_arch 6J;       then echo armv6j;
3748         elif check_arm_arch 6K;       then echo armv6k;
3749         elif check_arm_arch 6Z;       then echo armv6z;
3750         elif check_arm_arch 6ZK;      then echo armv6zk;
3751         elif check_arm_arch 6T2;      then echo armv6t2;
3752         elif check_arm_arch 7;        then echo armv7;
3753         elif check_arm_arch 7A  7_A;  then echo armv7-a;
3754         elif check_arm_arch 7R  7_R;  then echo armv7-r;
3755         elif check_arm_arch 7M  7_M;  then echo armv7-m;
3756         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
3757         elif check_arm_arch 8A  8_A;  then echo armv8-a;
3758         fi
3759     }
3760
3761     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3762
3763     case $cpu in
3764         armv*)
3765             cpuflags="-march=$cpu"
3766             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3767         ;;
3768         *)
3769             cpuflags="-mcpu=$cpu"
3770             case $cpu in
3771                 cortex-a*)                               subarch=armv7a  ;;
3772                 cortex-r*)                               subarch=armv7r  ;;
3773                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3774                 arm11*)                                  subarch=armv6   ;;
3775                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3776                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3777                 *)                             subarch=$(probe_arm_arch) ;;
3778             esac
3779         ;;
3780     esac
3781
3782     case "$subarch" in
3783         armv5t*)    enable fast_clz                ;;
3784         armv[6-8]*)
3785             enable fast_clz
3786             disabled fast_unaligned || enable fast_unaligned
3787             ;;
3788     esac
3789
3790 elif enabled avr32; then
3791
3792     case $cpu in
3793         ap7[02]0[0-2])
3794             subarch="avr32_ap"
3795             cpuflags="-mpart=$cpu"
3796         ;;
3797         ap)
3798             subarch="avr32_ap"
3799             cpuflags="-march=$cpu"
3800         ;;
3801         uc3[ab]*)
3802             subarch="avr32_uc"
3803             cpuflags="-mcpu=$cpu"
3804         ;;
3805         uc)
3806             subarch="avr32_uc"
3807             cpuflags="-march=$cpu"
3808         ;;
3809     esac
3810
3811 elif enabled bfin; then
3812
3813     cpuflags="-mcpu=$cpu"
3814
3815 elif enabled mips; then
3816
3817     cpuflags="-march=$cpu"
3818
3819     case $cpu in
3820         24kc)
3821             disable mipsfpu
3822             disable mipsdspr1
3823             disable mipsdspr2
3824         ;;
3825         24kf*)
3826             disable mipsdspr1
3827             disable mipsdspr2
3828         ;;
3829         24kec|34kc|1004kc)
3830             disable mipsfpu
3831             disable mipsdspr2
3832         ;;
3833         24kef*|34kf*|1004kf*)
3834             disable mipsdspr2
3835         ;;
3836         74kc)
3837             disable mipsfpu
3838         ;;
3839     esac
3840
3841 elif enabled ppc; then
3842
3843     disable ldbrx
3844     disable vsx
3845
3846     case $(tolower $cpu) in
3847         601|ppc601|powerpc601)
3848             cpuflags="-mcpu=601"
3849             disable altivec
3850         ;;
3851         603*|ppc603*|powerpc603*)
3852             cpuflags="-mcpu=603"
3853             disable altivec
3854         ;;
3855         604*|ppc604*|powerpc604*)
3856             cpuflags="-mcpu=604"
3857             disable altivec
3858         ;;
3859         g3|75*|ppc75*|powerpc75*)
3860             cpuflags="-mcpu=750"
3861             disable altivec
3862         ;;
3863         g4|745*|ppc745*|powerpc745*)
3864             cpuflags="-mcpu=7450"
3865         ;;
3866         74*|ppc74*|powerpc74*)
3867             cpuflags="-mcpu=7400"
3868         ;;
3869         g5|970|ppc970|powerpc970)
3870             cpuflags="-mcpu=970"
3871         ;;
3872         power[3-8]*)
3873             cpuflags="-mcpu=$cpu"
3874         ;;
3875         cell)
3876             cpuflags="-mcpu=cell"
3877             enable ldbrx
3878         ;;
3879         e500mc)
3880             cpuflags="-mcpu=e500mc"
3881             disable altivec
3882         ;;
3883         e500v2)
3884             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3885             disable altivec
3886             disable dcbzl
3887         ;;
3888         e500)
3889             cpuflags="-mcpu=8540 -mhard-float"
3890             disable altivec
3891             disable dcbzl
3892         ;;
3893     esac
3894
3895 elif enabled sparc; then
3896
3897     case $cpu in
3898         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3899             cpuflags="-mcpu=$cpu"
3900         ;;
3901         ultrasparc*|niagara[234])
3902             cpuflags="-mcpu=$cpu"
3903         ;;
3904     esac
3905
3906 elif enabled x86; then
3907
3908     case $cpu in
3909         i[345]86|pentium)
3910             cpuflags="-march=$cpu"
3911             disable i686
3912             disable mmx
3913         ;;
3914         # targets that do NOT support nopl and conditional mov (cmov)
3915         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3916             cpuflags="-march=$cpu"
3917             disable i686
3918         ;;
3919         # targets that do support nopl and conditional mov (cmov)
3920         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
3921         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|amdfam10|barcelona|b[dt]ver*)
3922             cpuflags="-march=$cpu"
3923             enable i686
3924             enable fast_cmov
3925         ;;
3926         # targets that do support conditional mov but on which it's slow
3927         pentium4|pentium4m|prescott|nocona)
3928             cpuflags="-march=$cpu"
3929             enable i686
3930             disable fast_cmov
3931         ;;
3932     esac
3933
3934 fi
3935
3936 if [ "$cpu" != generic ]; then
3937     add_cflags  $cpuflags
3938     add_asflags $cpuflags
3939 fi
3940
3941 # compiler sanity check
3942 check_exec <<EOF
3943 int main(void){ return 0; }
3944 EOF
3945 if test "$?" != 0; then
3946     echo "$cc is unable to create an executable file."
3947     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3948         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3949         echo "Only do this if you know what cross compiling means."
3950     fi
3951     die "C compiler test failed."
3952 fi
3953
3954 add_cppflags -D_ISOC99_SOURCE
3955 add_cxxflags -D__STDC_CONSTANT_MACROS
3956 check_cflags -std=c99
3957 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
3958 #include <stdlib.h>
3959 EOF
3960 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
3961 #include <stdlib.h>
3962 EOF
3963
3964 add_host_cppflags -D_ISOC99_SOURCE
3965 check_host_cflags -std=c99
3966 check_host_cflags -Wall
3967 check_host_cflags -O3
3968
3969 check_64bit(){
3970     arch32=$1
3971     arch64=$2
3972     expr=$3
3973     check_code cc "" "int test[2*($expr) - 1]" &&
3974         subarch=$arch64 || subarch=$arch32
3975 }
3976
3977 case "$arch" in
3978     aarch64|alpha|ia64)
3979         spic=$shared
3980     ;;
3981     mips)
3982         check_64bit mips mips64 '_MIPS_SIM > 1'
3983         spic=$shared
3984     ;;
3985     parisc)
3986         check_64bit parisc parisc64 'sizeof(void *) > 4'
3987         spic=$shared
3988     ;;
3989     ppc)
3990         check_64bit ppc ppc64 'sizeof(void *) > 4'
3991         spic=$shared
3992     ;;
3993     s390)
3994         check_64bit s390 s390x 'sizeof(void *) > 4'
3995         spic=$shared
3996     ;;
3997     sparc)
3998         check_64bit sparc sparc64 'sizeof(void *) > 4'
3999         spic=$shared
4000     ;;
4001     x86)
4002         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
4003         # Treat x32 as x64 for now. Note it also needs spic=$shared
4004         test "$subarch" = "x86_32" && check_cpp_condition stddef.h 'defined(__x86_64__)' &&
4005             subarch=x86_64
4006         if test "$subarch" = "x86_64"; then
4007             spic=$shared
4008         fi
4009     ;;
4010     ppc)
4011         check_cc <<EOF && subarch="ppc64"
4012         int test[(int)sizeof(char*) - 7];
4013 EOF
4014     ;;
4015 esac
4016
4017 enable $subarch
4018 enabled spic && enable_weak pic
4019
4020 # OS specific
4021 case $target_os in
4022     aix)
4023         SHFLAGS=-shared
4024         add_cppflags '-I\$(SRC_PATH)/compat/aix'
4025         enabled shared && add_ldflags -Wl,-brtl
4026         ;;
4027     android)
4028         disable symver
4029         enable section_data_rel_ro
4030         SLIB_INSTALL_NAME='$(SLIBNAME)'
4031         SLIB_INSTALL_LINKS=
4032         # soname not set on purpose
4033         SHFLAGS=-shared
4034         ;;
4035     haiku)
4036         prefix_default="/boot/common"
4037         network_extralibs="-lnetwork"
4038         host_libs=
4039         ;;
4040     sunos)
4041         SHFLAGS='-shared -Wl,-h,$$(@F)'
4042         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
4043         network_extralibs="-lsocket -lnsl"
4044         add_cppflags -D__EXTENSIONS__
4045         # When using suncc to build, the Solaris linker will mark
4046         # an executable with each instruction set encountered by
4047         # the Solaris assembler.  As our libraries contain their own
4048         # guards for processor-specific code, instead suppress
4049         # generation of the HWCAPS ELF section on Solaris x86 only.
4050         enabled_all suncc x86 &&
4051             echo "hwcap_1 = OVERRIDE;" > mapfile &&
4052             add_ldflags -Wl,-M,mapfile
4053         nm_default='nm -P -g'
4054         ;;
4055     netbsd)
4056         disable symver
4057         oss_indev_extralibs="-lossaudio"
4058         oss_outdev_extralibs="-lossaudio"
4059         enabled gcc || check_ldflags -Wl,-zmuldefs
4060         ;;
4061     openbsd|bitrig)
4062         disable symver
4063         SHFLAGS='-shared'
4064         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
4065         SLIB_INSTALL_LINKS=
4066         oss_indev_extralibs="-lossaudio"
4067         oss_outdev_extralibs="-lossaudio"
4068         ;;
4069     dragonfly)
4070         disable symver
4071         ;;
4072     freebsd)
4073         ;;
4074     bsd/os)
4075         add_extralibs -lpoll -lgnugetopt
4076         strip="strip -d"
4077         ;;
4078     darwin)
4079         enabled ppc && add_asflags -force_cpusubtype_ALL
4080         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
4081         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
4082         strip="${strip} -x"
4083         add_ldflags -Wl,-dynamic,-search_paths_first
4084         SLIBSUF=".dylib"
4085         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
4086         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
4087         objformat="macho"
4088         enabled x86_64 && objformat="macho64"
4089         enabled_any pic shared x86_64 ||
4090             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
4091         ;;
4092     mingw32*)
4093         if test $target_os = "mingw32ce"; then
4094             disable network
4095         else
4096             target_os=mingw32
4097         fi
4098         LIBTARGET=i386
4099         if enabled x86_64; then
4100             LIBTARGET="i386:x86-64"
4101         elif enabled arm; then
4102             LIBTARGET=arm-wince
4103         fi
4104         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4105         check_ldflags -Wl,--nxcompat
4106         check_ldflags -Wl,--dynamicbase
4107         enabled x86_32 && check_ldflags -Wl,--large-address-aware
4108         shlibdir_default="$bindir_default"
4109         SLIBPREF=""
4110         SLIBSUF=".dll"
4111         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4112         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4113         dlltool="${cross_prefix}dlltool"
4114         if check_cmd lib.exe -list; then
4115             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe /machine:$(LIBTARGET) /def:$$(@:$(SLIBSUF)=.def) /out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4116             if enabled x86_64; then
4117                 LIBTARGET=x64
4118             fi
4119         elif check_cmd $dlltool --version; then
4120             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
4121         fi
4122         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4123         SLIB_INSTALL_LINKS=
4124         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4125         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4126         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
4127         objformat="win32"
4128         ranlib=:
4129         enable dos_paths
4130         ;;
4131     win32|win64)
4132         disable symver
4133         if enabled shared; then
4134             # Link to the import library instead of the normal static library
4135             # for shared libs.
4136             LD_LIB='%.lib'
4137             # Cannot build both shared and static libs with MSVC or icl.
4138             disable static
4139         fi
4140         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
4141         shlibdir_default="$bindir_default"
4142         SLIBPREF=""
4143         SLIBSUF=".dll"
4144         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4145         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4146         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
4147         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4148         SLIB_INSTALL_LINKS=
4149         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4150         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4151         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4152         objformat="win32"
4153         ranlib=:
4154         enable dos_paths
4155         ;;
4156     cygwin*)
4157         target_os=cygwin
4158         shlibdir_default="$bindir_default"
4159         SLIBPREF="cyg"
4160         SLIBSUF=".dll"
4161         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4162         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4163         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4164         SLIB_INSTALL_LINKS=
4165         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
4166         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
4167         objformat="win32"
4168         enable dos_paths
4169         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4170         ;;
4171     *-dos|freedos|opendos)
4172         network_extralibs="-lsocket"
4173         objformat="coff"
4174         enable dos_paths
4175         add_cppflags -U__STRICT_ANSI__
4176         ;;
4177     linux)
4178         enable dv1394
4179         enable section_data_rel_ro
4180         ;;
4181     irix*)
4182         target_os=irix
4183         ranlib="echo ignoring ranlib"
4184         ;;
4185     os/2*)
4186         strip="lxlite -CS"
4187         ln_s="cp -f"
4188         objformat="aout"
4189         add_cppflags -D_GNU_SOURCE
4190         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
4191         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
4192         LIBSUF="_s.a"
4193         SLIBPREF=""
4194         SLIBSUF=".dll"
4195         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
4196         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
4197         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
4198             echo PROTMODE >> $(SUBDIR)$(NAME).def; \
4199             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
4200             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
4201             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
4202             emxexp -o $(OBJS) >> $(SUBDIR)$(NAME).def'
4203         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
4204             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
4205         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
4206         enable dos_paths
4207         enable_weak os2threads
4208         ;;
4209     gnu/kfreebsd)
4210         add_cppflags -D_BSD_SOURCE
4211         ;;
4212     gnu)
4213         ;;
4214     qnx)
4215         add_cppflags -D_QNX_SOURCE
4216         network_extralibs="-lsocket"
4217         ;;
4218     symbian)
4219         SLIBSUF=".dll"
4220         enable dos_paths
4221         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
4222         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
4223         add_ldflags -Wl,--target1-abs,--no-undefined \
4224                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
4225                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
4226         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
4227                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
4228                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
4229         ;;
4230     osf1)
4231         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
4232         ;;
4233     minix)
4234         ;;
4235     plan9)
4236         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
4237                      -D_REENTRANT_SOURCE        \
4238                      -D_RESEARCH_SOURCE         \
4239                      -DFD_SETSIZE=96            \
4240                      -DHAVE_SOCK_OPTS
4241         add_compat strtod.o strtod=avpriv_strtod
4242         network_extralibs='-lbsd'
4243         exeobjs=compat/plan9/main.o
4244         disable ffserver
4245         cp_f='cp'
4246         ;;
4247     none)
4248         ;;
4249     *)
4250         die "Unknown OS '$target_os'."
4251         ;;
4252 esac
4253
4254 # determine libc flavour
4255
4256 probe_libc(){
4257     pfx=$1
4258     pfx_no_=${pfx%_}
4259     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
4260     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
4261         eval ${pfx}libc_type=uclibc
4262         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4263     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
4264         eval ${pfx}libc_type=glibc
4265         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4266     # MinGW headers can be installed on Cygwin, so check for newlib first.
4267     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
4268         eval ${pfx}libc_type=newlib
4269         add_${pfx}cppflags -U__STRICT_ANSI__
4270     # MinGW64 is backwards compatible with MinGW32, so check for it first.
4271     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
4272         eval ${pfx}libc_type=mingw64
4273         if check_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
4274             add_compat msvcrt/snprintf.o
4275             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
4276         fi
4277         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4278         eval test \$${pfx_no_}cc_type = "gcc" &&
4279             add_${pfx}cppflags -D__printf__=__gnu_printf__
4280     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
4281          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
4282         eval ${pfx}libc_type=mingw32
4283         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
4284             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
4285             die "ERROR: MinGW32 runtime version must be >= 3.15."
4286         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4287         eval test \$${pfx_no_}cc_type = "gcc" &&
4288             add_${pfx}cppflags -D__printf__=__gnu_printf__
4289     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
4290         eval ${pfx}libc_type=msvcrt
4291         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
4292         # 0x601 by default unless something else is set by the user.
4293         # This can easily lead to us detecting functions only present
4294         # in such new versions and producing binaries requiring windows 7.0.
4295         # Therefore explicitly set the default to XP unless the user has
4296         # set something else on the command line.
4297         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
4298             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
4299     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
4300         eval ${pfx}libc_type=klibc
4301     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
4302         eval ${pfx}libc_type=bionic
4303     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
4304         eval ${pfx}libc_type=solaris
4305         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
4306     fi
4307     check_${pfx}cc <<EOF
4308 #include <time.h>
4309 void *v = localtime_r;
4310 EOF
4311 test "$?" != 0 && check_${pfx}cc -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600 <<EOF && add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4312 #include <time.h>
4313 void *v = localtime_r;
4314 EOF
4315
4316 }
4317
4318 probe_libc
4319 test -n "$libc_type" && enable libc_$libc_type
4320 probe_libc host_
4321 test -n "$host_libc_type" && enable host_libc_$host_libc_type
4322
4323 case $libc_type in
4324     bionic)
4325         add_compat strtod.o strtod=avpriv_strtod
4326         ;;
4327     msvcrt)
4328         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -le 18 ]; then
4329             add_compat strtod.o strtod=avpriv_strtod
4330             add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
4331                                          _snprintf=avpriv_snprintf  \
4332                                          vsnprintf=avpriv_vsnprintf
4333         fi
4334         ;;
4335 esac
4336
4337 # hacks for compiler/libc/os combinations
4338
4339 if enabled_all tms470 libc_glibc; then
4340     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
4341     add_cppflags -D__USER_LABEL_PREFIX__=
4342     add_cppflags -D__builtin_memset=memset
4343     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
4344     add_cflags   -pds=48    # incompatible redefinition of macro
4345 fi
4346
4347 if enabled_all ccc libc_glibc; then
4348     add_ldflags -Wl,-z,now  # calls to libots crash without this
4349 fi
4350
4351 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
4352     add_cppflags '-I\$(SRC_PATH)/compat/float'
4353
4354 esc(){
4355     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
4356 }
4357
4358 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" >config.fate
4359
4360 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
4361
4362 set_default libdir
4363 : ${shlibdir_default:="$libdir"}
4364
4365 set_default $PATHS_LIST
4366 set_default nm
4367
4368 # we need to build at least one lib type
4369 if ! enabled_any static shared; then
4370     cat <<EOF
4371 At least one library type must be built.
4372 Specify --enable-static to build the static libraries or --enable-shared to
4373 build the shared libraries as well. To only build the shared libraries specify
4374 --disable-static in addition to --enable-shared.
4375 EOF
4376     exit 1;
4377 fi
4378
4379 die_license_disabled() {
4380     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
4381 }
4382
4383 die_license_disabled_gpl() {
4384     enabled $1 || { enabled $2 && die "$2 is incompatible with the gpl and --enable-$1 is not specified."; }
4385 }
4386
4387 die_license_disabled gpl frei0r
4388 die_license_disabled gpl libcdio
4389 die_license_disabled gpl libsmbclient
4390 die_license_disabled gpl libutvideo
4391 die_license_disabled gpl libvidstab
4392 die_license_disabled gpl libx264
4393 die_license_disabled gpl libx265
4394 die_license_disabled gpl libxavs
4395 die_license_disabled gpl libxvid
4396 die_license_disabled gpl libzvbi
4397 die_license_disabled gpl x11grab
4398
4399 die_license_disabled nonfree libaacplus
4400 die_license_disabled nonfree libfaac
4401 die_license_disabled nonfree nvenc
4402 enabled gpl && die_license_disabled_gpl nonfree libfdk_aac
4403 enabled gpl && die_license_disabled_gpl nonfree openssl
4404
4405 die_license_disabled version3 libopencore_amrnb
4406 die_license_disabled version3 libopencore_amrwb
4407 die_license_disabled version3 libsmbclient
4408 die_license_disabled version3 libvo_aacenc
4409 die_license_disabled version3 libvo_amrwbenc
4410
4411 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
4412
4413 disabled optimizations || check_cflags -fomit-frame-pointer
4414
4415 enable_weak_pic() {
4416     disabled pic && return
4417     enable pic
4418     add_cppflags -DPIC
4419     case "$target_os" in
4420     mingw*|cygwin*)
4421         ;;
4422     *)
4423         add_cflags -fPIC
4424         ;;
4425     esac
4426     add_asflags  -fPIC
4427 }
4428
4429 enabled pic && enable_weak_pic
4430
4431 check_cc <<EOF || die "Symbol mangling check failed."
4432 int ff_extern;
4433 EOF
4434 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
4435 extern_prefix=${sym%%ff_extern*}
4436
4437 check_cc <<EOF && enable_weak inline_asm
4438 void foo(void) { __asm__ volatile ("" ::); }
4439 EOF
4440
4441 _restrict=
4442 for restrict_keyword in restrict __restrict__ __restrict; do
4443     check_cc <<EOF && _restrict=$restrict_keyword && break
4444 void foo(char * $restrict_keyword p);
4445 EOF
4446 done
4447
4448 check_cc <<EOF && enable pragma_deprecated
4449 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
4450 EOF
4451
4452 check_cc <<EOF && enable attribute_packed
4453 struct { int x; } __attribute__((packed)) x;
4454 EOF
4455
4456 check_cc <<EOF && enable attribute_may_alias
4457 union { int x; } __attribute__((may_alias)) x;
4458 EOF
4459
4460 check_cc <<EOF || die "endian test failed"
4461 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
4462 EOF
4463 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
4464
4465 if  [ "$cpu" = "power7" ] || [ "$cpu" = "power8" ] || enabled ppc64; then
4466     if ! enabled bigendian && enabled altivec ;then
4467         enable vsx
4468     fi
4469 fi
4470
4471 check_gas() {
4472     log "check_gas using '$as' as AS"
4473     # :vararg is used on aarch64, arm and ppc altivec
4474     check_as <<EOF || return 1
4475 .macro m n, y:vararg=0
4476 \n: .int \y
4477 .endm
4478 m x
4479 EOF
4480     # .altmacro is only used in arm asm
4481     ! enabled arm || check_as <<EOF || return 1
4482 .altmacro
4483 EOF
4484     enable gnu_as
4485     return 0
4486 }
4487
4488 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
4489     nogas=:
4490     enabled_any arm aarch64 && nogas=die
4491     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
4492     as_noop=-v
4493
4494     case $as_type in
4495         arm*) gaspp_as_type=armasm; as_noop=-h ;;
4496         gcc)  gaspp_as_type=gas ;;
4497         *)    gaspp_as_type=$as_type ;;
4498     esac
4499
4500     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
4501
4502     test "${as#*gas-preprocessor.pl}" != "$as" ||
4503     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- ${as:=$cc} $as_noop &&
4504         gas="${gas:=gas-preprocessor.pl} -arch $arch -as-type $gaspp_as_type -- ${as:=$cc}"
4505
4506     if ! check_gas ; then
4507         as=${gas:=$as}
4508         check_gas || \
4509             $nogas "GNU assembler not found, install/update gas-preprocessor"
4510     fi
4511
4512     check_as <<EOF && enable as_func
4513 .func test
4514 .endfunc
4515 EOF
4516 fi
4517
4518 check_inline_asm inline_asm_labels '"1:\n"'
4519
4520 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
4521
4522 if enabled aarch64; then
4523     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
4524     # internal assembler in clang 3.3 does not support this instruction
4525     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
4526     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
4527
4528     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
4529
4530 elif enabled alpha; then
4531
4532     check_cflags -mieee
4533
4534 elif enabled arm; then
4535
4536     check_cpp_condition stddef.h "defined __thumb__" && check_cc <<EOF && enable_weak thumb
4537 float func(float a, float b){ return a+b; }
4538 EOF
4539
4540     enabled thumb && check_cflags -mthumb || check_cflags -marm
4541
4542     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
4543         enable vfp_args
4544     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__"; then
4545         case "${cross_prefix:-$cc}" in
4546             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
4547             *) check_ld "cc" <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
4548 __asm__ (".eabi_attribute 28, 1");
4549 int main(void) { return 0; }
4550 EOF
4551         esac
4552         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
4553     fi
4554
4555     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
4556     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
4557     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
4558     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
4559     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
4560     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
4561     enabled setend  && check_insn setend  'setend be'
4562
4563     [ $target_os = linux ] || [ $target_os = android ] ||
4564         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
4565             $ARCH_EXT_LIST_ARM
4566
4567     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
4568
4569     check_as <<EOF && enable as_dn_directive
4570 ra .dn d0.i16
4571 .unreq ra
4572 EOF
4573
4574     # llvm's integrated assembler supports .object_arch from llvm 3.5
4575     [ "$objformat" = elf ] && check_as <<EOF && enable as_object_arch
4576 .object_arch armv4
4577 EOF
4578
4579     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
4580
4581 elif enabled mips; then
4582
4583     check_inline_asm loongson '"dmult.g $1, $2, $3"'
4584
4585     # Enable minimum ISA based on selected options
4586     if enabled mips64 && (enabled mipsdspr1 || enabled mipsdspr2); then
4587         add_cflags "-mips64r2"
4588         add_asflags "-mips64r2"
4589     elif enabled mips64 && enabled mipsfpu; then
4590         add_cflags "-mips64"
4591         add_asflags "-mips64"
4592     elif enabled mipsfpu || enabled mipsdspr1 || enabled mipsdspr2; then
4593         add_cflags "-mips32r2"
4594         add_asflags "-mips32r2"
4595     fi
4596
4597     enabled mipsdspr1 && add_cflags "-mdsp" && add_asflags "-mdsp" &&
4598      check_inline_asm mipsdspr1 '"addu.qb $t0, $t1, $t2"'
4599     enabled mipsdspr2 && add_cflags "-mdspr2" && add_asflags "-mdspr2" &&
4600      check_inline_asm mipsdspr2 '"absq_s.qb $t0, $t1"'
4601     enabled mipsfpu   && add_cflags "-mhard-float" && add_asflags "-mhard-float" &&
4602      check_inline_asm mipsfpu   '"madd.d $f0, $f2, $f4, $f6"'
4603
4604 elif enabled parisc; then
4605
4606     if enabled gcc; then
4607         case $($cc -dumpversion) in
4608             4.[3-9].*) check_cflags -fno-optimize-sibling-calls ;;
4609         esac
4610     fi
4611
4612 elif enabled ppc; then
4613
4614     enable local_aligned_8 local_aligned_16 local_aligned_32
4615
4616     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
4617     check_inline_asm ibm_asm   '"add 0, 0, 0"'
4618     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
4619     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
4620
4621     # AltiVec flags: The FSF version of GCC differs from the Apple version
4622     if enabled altivec; then
4623         check_cflags -maltivec -mabi=altivec &&
4624         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
4625         check_cflags -faltivec
4626
4627         # check if our compiler supports Motorola AltiVec C API
4628         check_cc <<EOF || disable altivec
4629 $inc_altivec_h
4630 int main(void) {
4631     vector signed int v1 = (vector signed int) { 0 };
4632     vector signed int v2 = (vector signed int) { 1 };
4633     v1 = vec_add(v1, v2);
4634     return 0;
4635 }
4636 EOF
4637
4638         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
4639     fi
4640
4641     if enabled vsx; then
4642         check_cflags -mvsx
4643     fi
4644 elif enabled x86; then
4645
4646     check_builtin rdtsc    intrin.h   "__rdtsc()"
4647     check_builtin mm_empty mmintrin.h "_mm_empty()"
4648
4649     enable local_aligned_8 local_aligned_16 local_aligned_32
4650
4651     # check whether EBP is available on x86
4652     # As 'i' is stored on the stack, this program will crash
4653     # if the base pointer is used to access it because the
4654     # base pointer is cleared in the inline assembly code.
4655     check_exec_crash <<EOF && enable ebp_available
4656 volatile int i=0;
4657 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
4658 return i;
4659 EOF
4660
4661     # check whether EBX is available on x86
4662     check_inline_asm ebx_available '""::"b"(0)' &&
4663         check_inline_asm ebx_available '"":::"%ebx"'
4664
4665     # check whether xmm clobbers are supported
4666     check_inline_asm xmm_clobbers '"":::"%xmm0"'
4667
4668     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
4669         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
4670
4671     # check whether binutils is new enough to compile SSSE3/MMXEXT
4672     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
4673     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
4674
4675     if ! disabled_any asm mmx yasm; then
4676         if check_cmd $yasmexe --version; then
4677             enabled x86_64 && yasm_extra="-m amd64"
4678             yasm_debug="-g dwarf2"
4679         elif check_cmd nasm -v; then
4680             yasmexe=nasm
4681             yasm_debug="-g -F dwarf"
4682             if enabled x86_64; then
4683                 case "$objformat" in
4684                     elf)   objformat=elf64 ;;
4685                     win32) objformat=win64 ;;
4686                 esac
4687             fi
4688         fi
4689
4690         YASMFLAGS="-f $objformat $yasm_extra"
4691         enabled pic               && append YASMFLAGS "-DPIC"
4692         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
4693         case "$objformat" in
4694             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
4695         esac
4696
4697         check_yasm "movbe ecx, [5]" && enable yasm ||
4698             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
4699         check_yasm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
4700         check_yasm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
4701         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
4702         check_yasm "CPU amdnop" || disable cpunop
4703     fi
4704
4705     case "$cpu" in
4706         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
4707             disable fast_clz
4708         ;;
4709     esac
4710
4711 fi
4712
4713 check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
4714
4715 check_ldflags -Wl,--as-needed
4716 check_ldflags -Wl,-z,noexecstack
4717
4718 if check_func dlopen; then
4719     ldl=
4720 elif check_func dlopen -ldl; then
4721     ldl=-ldl
4722 fi
4723
4724 frei0r_filter_extralibs='$ldl'
4725 frei0r_src_filter_extralibs='$ldl'
4726 ladspa_filter_extralibs='$ldl'
4727 nvenc_encoder_extralibs='$ldl'
4728
4729 if ! disabled network; then
4730     check_func getaddrinfo $network_extralibs
4731     check_func getservbyport $network_extralibs
4732     check_func inet_aton $network_extralibs
4733
4734     check_type netdb.h "struct addrinfo"
4735     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
4736     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
4737     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
4738     check_type poll.h "struct pollfd"
4739     check_type netinet/sctp.h "struct sctp_event_subscribe"
4740     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
4741     check_type netinet/in.h "struct sockaddr_in6"
4742     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
4743     check_type "sys/types.h sys/socket.h" socklen_t
4744
4745     # Prefer arpa/inet.h over winsock2
4746     if check_header arpa/inet.h ; then
4747         check_func closesocket
4748     elif check_header winsock2.h ; then
4749         check_func_headers winsock2.h closesocket -lws2 &&
4750             network_extralibs="-lws2" ||
4751         { check_func_headers winsock2.h closesocket -lws2_32 &&
4752             network_extralibs="-lws2_32"; } || disable winsock2_h network
4753         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
4754
4755         check_type ws2tcpip.h socklen_t
4756         check_type ws2tcpip.h "struct addrinfo"
4757         check_type ws2tcpip.h "struct group_source_req"
4758         check_type ws2tcpip.h "struct ip_mreq_source"
4759         check_type ws2tcpip.h "struct ipv6_mreq"
4760         check_type winsock2.h "struct pollfd"
4761         check_struct winsock2.h "struct sockaddr" sa_len
4762         check_type ws2tcpip.h "struct sockaddr_in6"
4763         check_type ws2tcpip.h "struct sockaddr_storage"
4764     else
4765         disable network
4766     fi
4767 fi
4768
4769 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
4770 check_builtin atomic_compare_exchange "" "int *ptr, *oldval; int newval; __atomic_compare_exchange_n(ptr, oldval, newval, 0, __ATOMIC_SEQ_CST, __ATOMIC_SEQ_CST)"
4771 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
4772 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
4773 check_builtin sarestart signal.h "SA_RESTART"
4774 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
4775
4776 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
4777 check_func  ${malloc_prefix}memalign            && enable memalign
4778 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
4779
4780 check_func  access
4781 check_func_headers time.h clock_gettime || { check_func_headers time.h clock_gettime -lrt && add_extralibs -lrt && LIBRT="-lrt"; }
4782 check_func  fcntl
4783 check_func  fork
4784 check_func  gethrtime
4785 check_func  getopt
4786 check_func  getrusage
4787 check_func  gettimeofday
4788 check_func  gmtime_r
4789 check_func  isatty
4790 check_func  localtime_r
4791 check_func  mach_absolute_time
4792 check_func  mkstemp
4793 check_func  mmap
4794 check_func  mprotect
4795 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
4796 check_func_headers time.h nanosleep || { check_func_headers time.h nanosleep -lrt && add_extralibs -lrt && LIBRT="-lrt"; }
4797 check_func  sched_getaffinity
4798 check_func  setrlimit
4799 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
4800 check_func  strerror_r
4801 check_func  sysconf
4802 check_func  sysctl
4803 check_func  usleep
4804
4805 check_func_headers conio.h kbhit
4806 check_func_headers io.h setmode
4807 check_func_headers lzo/lzo1x.h lzo1x_999_compress
4808 check_func_headers stdlib.h getenv
4809
4810 check_func_headers windows.h CoTaskMemFree -lole32
4811 check_func_headers windows.h GetProcessAffinityMask
4812 check_func_headers windows.h GetProcessTimes
4813 check_func_headers windows.h GetSystemTimeAsFileTime
4814 check_func_headers windows.h MapViewOfFile
4815 check_func_headers windows.h PeekNamedPipe
4816 check_func_headers windows.h SetConsoleTextAttribute
4817 check_func_headers windows.h Sleep
4818 check_func_headers windows.h VirtualAlloc
4819 check_struct windows.h "CONDITION_VARIABLE" Ptr
4820 check_func_headers glob.h glob
4821 enabled xlib &&
4822     check_func_headers "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
4823
4824 check_header direct.h
4825 check_header dlfcn.h
4826 check_header dxva.h
4827 check_header dxva2api.h -D_WIN32_WINNT=0x0600
4828 check_header io.h
4829 check_header libcrystalhd/libcrystalhd_if.h
4830 check_header mach/mach_time.h
4831 check_header malloc.h